Merge XFA to PDFium master at 4dc95e7 on 10/28/2014
diff --git a/core/include/fpdfdoc/fpdf_doc.h b/core/include/fpdfdoc/fpdf_doc.h
index e4cf777..960e943 100644
--- a/core/include/fpdfdoc/fpdf_doc.h
+++ b/core/include/fpdfdoc/fpdf_doc.h
@@ -1230,8 +1230,9 @@
FX_BOOL ClearSelectedOptions(FX_BOOL bNotify = FALSE);
+ FX_BOOL ClearOptions(FX_BOOL bNotify = FALSE);
-
+ int InsertOption(CFX_WideString csOptLabel, int index = -1, FX_BOOL bNotify = FALSE);
FX_FLOAT GetFontSize()
{
diff --git a/core/include/fxcodec/fx_codec.h b/core/include/fxcodec/fx_codec.h
index da8b309..b0eecc3 100644
--- a/core/include/fxcodec/fx_codec.h
+++ b/core/include/fxcodec/fx_codec.h
@@ -13,6 +13,7 @@
#include "fx_codec_provider.h"
class CFX_DIBSource;
class ICodec_ScanlineDecoder;
+class ICodec_ProgressiveDecoder;
class ICodec_BasicModule;
class ICodec_FaxModule;
class ICodec_JpegModule;
@@ -21,6 +22,11 @@
class ICodec_IccModule;
class ICodec_FlateModule;
class ICodec_Jbig2Encoder;
+class ICodec_PngModule;
+class ICodec_GifModule;
+class ICodec_BmpModule;
+class ICodec_TiffModule;
+class CFX_DIBAttribute;
class ICodec_ScanlineDecoder;
class CCodec_ModuleMgr : public CFX_Object
{
@@ -37,6 +43,9 @@
void InitIccDecoder();
+
+ ICodec_ProgressiveDecoder* CreateProgressiveDecoder();
+
ICodec_Jbig2Encoder* CreateJbig2Encoder();
protected:
CCodec_ModuleMgr();
@@ -70,6 +79,22 @@
{
return m_pFlateModule;
}
+ ICodec_PngModule* GetPngModule()
+ {
+ return m_pPngModule;
+ }
+ ICodec_GifModule* GetGifModule()
+ {
+ return m_pGifModule;
+ }
+ ICodec_BmpModule* GetBmpModule()
+ {
+ return m_pBmpModule;
+ }
+ ICodec_TiffModule* GetTiffModule()
+ {
+ return m_pTiffModule;
+ }
protected:
ICodec_BasicModule* m_pBasicModule;
ICodec_FaxModule* m_pFaxModule;
@@ -78,6 +103,10 @@
ICodec_Jbig2Module* m_pJbig2Module;
ICodec_IccModule* m_pIccModule;
ICodec_FlateModule* m_pFlateModule;
+ ICodec_PngModule* m_pPngModule;
+ ICodec_GifModule* m_pGifModule;
+ ICodec_BmpModule* m_pBmpModule;
+ ICodec_TiffModule* m_pTiffModule;
};
class ICodec_BasicModule : public CFX_Object
@@ -170,7 +199,7 @@
virtual void Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size) = 0;
- virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps) = 0;
+ virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps, CFX_DIBAttribute* pAttribute = NULL) = 0;
virtual int StartScanline(void* pContext, int down_scale) = 0;
@@ -197,6 +226,97 @@
virtual void DestroyDecoder(FX_LPVOID ctx) = 0;
};
+class ICodec_PngModule : public CFX_Object
+{
+public:
+
+ virtual ~ICodec_PngModule() {}
+
+ virtual void* Start(void* pModule) = 0;
+
+ virtual void Finish(void* pContext) = 0;
+
+ virtual FX_BOOL Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_DIBAttribute* pAttribute = NULL) = 0;
+
+ FX_BOOL (*ReadHeaderCallback)(void* pModule, int width, int height, int bpc, int pass, int* color_type, double* gamma);
+
+ FX_BOOL (*AskScanlineBufCallback)(void* pModule, int line, FX_LPBYTE& src_buf);
+
+ void (*FillScanlineBufCompletedCallback)(void* pModule, int pass, int line);
+};
+class ICodec_GifModule : public CFX_Object
+{
+public:
+
+ virtual ~ICodec_GifModule() {}
+
+ virtual void* Start(void* pModule) = 0;
+
+ virtual void Finish(void* pContext) = 0;
+
+ virtual FX_DWORD GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr = NULL) = 0;
+
+ virtual void Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size) = 0;
+
+ virtual FX_INT32 ReadHeader(void* pContext, int* width, int* height,
+ int* pal_num, void** pal_pp, int* bg_index, CFX_DIBAttribute* pAttribute = NULL) = 0;
+
+ virtual FX_INT32 LoadFrameInfo(void* pContext, int* frame_num) = 0;
+
+ void (*RecordCurrentPositionCallback)(void* pModule, FX_DWORD& cur_pos);
+
+ FX_LPBYTE (*AskLocalPaletteBufCallback)(void* pModule, FX_INT32 frame_num, FX_INT32 pal_size);
+
+ virtual FX_INT32 LoadFrame(void* pContext, int frame_num, CFX_DIBAttribute* pAttribute = NULL) = 0;
+
+ FX_BOOL (*InputRecordPositionBufCallback)(void* pModule, FX_DWORD rcd_pos, const FX_RECT& img_rc,
+ FX_INT32 pal_num, void* pal_ptr,
+ FX_INT32 delay_time, FX_BOOL user_input,
+ FX_INT32 trans_index, FX_INT32 disposal_method, FX_BOOL interlace);
+
+ void (*ReadScanlineCallback)(void* pModule, FX_INT32 row_num, FX_LPBYTE row_buf);
+};
+class ICodec_BmpModule : public CFX_Object
+{
+public:
+
+ virtual ~ICodec_BmpModule() {}
+
+ virtual void* Start(void* pModule) = 0;
+
+ virtual void Finish(void* pContext) = 0;
+
+ virtual FX_DWORD GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr = NULL) = 0;
+
+ virtual void Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size) = 0;
+
+ virtual FX_INT32 ReadHeader(void* pContext, FX_INT32* width, FX_INT32* height, FX_BOOL* tb_flag, FX_INT32* components,
+ int* pal_num, FX_DWORD** pal_pp, CFX_DIBAttribute* pAttribute = NULL) = 0;
+
+ virtual FX_INT32 LoadImage(void* pContext) = 0;
+
+ FX_BOOL (*InputImagePositionBufCallback)(void* pModule, FX_DWORD rcd_pos);
+
+ void (*ReadScanlineCallback)(void* pModule, FX_INT32 row_num, FX_LPBYTE row_buf);
+};
+class ICodec_TiffModule : public CFX_Object
+{
+public:
+
+ virtual ~ICodec_TiffModule() {}
+
+ virtual FX_LPVOID CreateDecoder(IFX_FileRead* file_ptr) = 0;
+
+
+ virtual void GetFrames(FX_LPVOID ctx, FX_INT32& frames) = 0;
+
+ virtual FX_BOOL LoadFrameInfo(FX_LPVOID ctx, FX_INT32 frame, FX_DWORD& width, FX_DWORD& height, FX_DWORD& comps, FX_DWORD& bpc, CFX_DIBAttribute* pAttribute = NULL) = 0;
+
+
+ virtual FX_BOOL Decode(FX_LPVOID ctx, class CFX_DIBitmap* pDIBitmap) = 0;
+
+ virtual void DestroyDecoder(FX_LPVOID ctx) = 0;
+};
class ICodec_Jbig2Module : public CFX_Object
{
public:
@@ -218,6 +338,34 @@
virtual FXCODEC_STATUS ContinueDecode(void* pJbig2Content, IFX_Pause* pPause) = 0;
virtual void DestroyJbig2Context(void* pJbig2Content) = 0;
};
+class ICodec_ProgressiveDecoder : public CFX_Object
+{
+public:
+
+ virtual ~ICodec_ProgressiveDecoder() {}
+
+ virtual FXCODEC_STATUS LoadImageInfo(IFX_FileRead* pFile, FXCODEC_IMAGE_TYPE imageType = FXCODEC_IMAGE_UNKNOWN, CFX_DIBAttribute* pAttribute = NULL) = 0;
+
+ virtual FXCODEC_IMAGE_TYPE GetType() = 0;
+
+ virtual FX_INT32 GetWidth() = 0;
+
+ virtual FX_INT32 GetHeight() = 0;
+
+ virtual FX_INT32 GetNumComponents() = 0;
+
+ virtual FX_INT32 GetBPC() = 0;
+
+ virtual void SetClipBox(FX_RECT* clip) = 0;
+
+ virtual FXCODEC_STATUS GetFrames(FX_INT32& frames, IFX_Pause* pPause = NULL) = 0;
+
+ virtual FXCODEC_STATUS StartDecode(class CFX_DIBitmap* pDIBitmap,
+ FX_INT32 start_x, FX_INT32 start_y, FX_INT32 size_x, FX_INT32 size_y,
+ FX_INT32 frames = 0, FX_BOOL bInterpol = TRUE) = 0;
+
+ virtual FXCODEC_STATUS ContinueDecode(IFX_Pause* pPause = NULL) = 0;
+};
class ICodec_Jbig2Encoder : public CFX_Object
{
public:
@@ -286,4 +434,38 @@
void AdobeCMYK_to_sRGB(FX_FLOAT c, FX_FLOAT m, FX_FLOAT y, FX_FLOAT k, FX_FLOAT& R, FX_FLOAT& G, FX_FLOAT& B);
void AdobeCMYK_to_sRGB1(FX_BYTE c, FX_BYTE m, FX_BYTE y, FX_BYTE k, FX_BYTE& R, FX_BYTE& G, FX_BYTE& B);
FX_BOOL MD5ComputeID(FX_LPCVOID buf, FX_DWORD dwSize, FX_BYTE ID[16]);
+class CFX_DIBAttribute : public CFX_Object
+{
+public:
+ CFX_DIBAttribute();
+ ~CFX_DIBAttribute();
+
+ FX_INT32 m_nXDPI;
+
+ FX_INT32 m_nYDPI;
+
+ FX_FLOAT m_fAspectRatio;
+
+ FX_WORD m_wDPIUnit;
+
+ CFX_ByteString m_strAuthor;
+
+ FX_BYTE m_strTime[20];
+
+ FX_INT32 m_nGifLeft;
+ FX_INT32 m_nGifTop;
+
+ FX_DWORD* m_pGifLocalPalette;
+
+ FX_DWORD m_nGifLocalPalNum;
+
+ FX_INT32 m_nBmpCompressType;
+ class IFX_DIBAttributeExif* m_pExif;
+};
+class IFX_DIBAttributeExif : public CFX_Object
+{
+public:
+ virtual ~IFX_DIBAttributeExif() {};
+ virtual FX_BOOL GetInfo(FX_WORD tag, FX_LPVOID val) = 0;
+};
#endif
diff --git a/core/include/fxcodec/fx_codec_def.h b/core/include/fxcodec/fx_codec_def.h
index 0d08da6..7a18f5b 100644
--- a/core/include/fxcodec/fx_codec_def.h
+++ b/core/include/fxcodec/fx_codec_def.h
@@ -6,6 +6,15 @@
#ifndef _FX_CODEC_DEF_H_
#define _FX_CODEC_DEF_H_
+enum FXCODEC_IMAGE_TYPE {
+ FXCODEC_IMAGE_UNKNOWN = 0,
+ FXCODEC_IMAGE_BMP,
+ FXCODEC_IMAGE_JPG,
+ FXCODEC_IMAGE_PNG,
+ FXCODEC_IMAGE_GIF,
+ FXCODEC_IMAGE_TIF,
+ FXCODEC_IMAGE_MAX
+};
enum FXCODEC_STATUS {
FXCODEC_STATUS_ERROR = -1,
FXCODEC_STATUS_FRAME_READY,
@@ -58,6 +67,12 @@
#define Icc_PARAMTYPE_NONE 0
#define Icc_PARAMTYPE_BUFFER 1
#define Icc_PARAMTYPE_PARAM 2
+enum FXCODEC_RESUNIT {
+ FXCODEC_RESUNIT_NONE = 0,
+ FXCODEC_RESUNIT_INCH,
+ FXCODEC_RESUNIT_CENTIMETER,
+ FXCODEC_RESUNIT_METER
+};
#define EXIFTAG_USHORT_RESUNIT 296
#define EXIFTAG_FLOAT_DPIX 282
#define EXIFTAG_FLOAT_DPIY 283
diff --git a/core/include/fxcodec/fx_codec_provider.h b/core/include/fxcodec/fx_codec_provider.h
index a3ef396..f26194a 100644
--- a/core/include/fxcodec/fx_codec_provider.h
+++ b/core/include/fxcodec/fx_codec_provider.h
@@ -6,6 +6,7 @@
#ifndef _FX_CODEC_PROVIDER_H_
#define _FX_CODEC_PROVIDER_H_
+class CFX_DIBAttribute;
class IFX_JpegProvider
{
public:
@@ -39,8 +40,7 @@
virtual void Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size) = 0;
- virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps) = 0;
-
+ virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps, CFX_DIBAttribute* pAttribute = NULL) = 0;
virtual int StartScanline(void* pContext, int down_scale) = 0;
diff --git a/core/include/fxcrt/fx_arb.h b/core/include/fxcrt/fx_arb.h
index 4950f81..ed0370f 100644
--- a/core/include/fxcrt/fx_arb.h
+++ b/core/include/fxcrt/fx_arb.h
@@ -6,6 +6,54 @@
#ifndef _FX_ARABIC_
#define _FX_ARABIC_
+class IFX_ArabicChar;
+class IFX_BidiChar;
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+typedef struct _FX_ARBFORMTABLE {
+ FX_WCHAR wIsolated;
+ FX_WCHAR wFinal;
+ FX_WCHAR wInitial;
+ FX_WCHAR wMedial;
+} FX_ARBFORMTABLE, * FX_LPARBFORMTABLE;
+typedef FX_ARBFORMTABLE const * FX_LPCARBFORMTABLE;
+typedef struct _FX_ARAALEF {
+ FX_WCHAR wAlef;
+ FX_WCHAR wIsolated;
+} FX_ARAALEF, * FX_LPARAALEF;
+typedef FX_ARAALEF const * FX_LPCARAALEF;
+typedef struct _FX_ARASHADDA {
+ FX_WCHAR wShadda;
+ FX_WCHAR wIsolated;
+} FX_ARASHADDA, * FX_LPARASHADDA;
+typedef FX_ARASHADDA const * FX_LPCARASHADDA;
+FX_LPCARBFORMTABLE FX_GetArabicFormTable(FX_WCHAR unicode);
+FX_WCHAR FX_GetArabicFromAlefTable(FX_WCHAR alef);
+FX_WCHAR FX_GetArabicFromShaddaTable(FX_WCHAR shadda);
+#ifdef __cplusplus
+};
+#endif
+enum FX_ARBPOSITION {
+ FX_ARBPOSITION_Isolated = 0,
+ FX_ARBPOSITION_Final,
+ FX_ARBPOSITION_Initial,
+ FX_ARBPOSITION_Medial,
+};
+class IFX_ArabicChar
+{
+public:
+ static IFX_ArabicChar* Create();
+ virtual void Release() = 0;
+ virtual FX_BOOL IsArabicChar(FX_WCHAR wch) const = 0;
+ virtual FX_BOOL IsArabicFormChar(FX_WCHAR wch) const = 0;
+ virtual FX_WCHAR GetFormChar(FX_WCHAR wch, FX_WCHAR prev = 0, FX_WCHAR next = 0) const = 0;
+ virtual FX_WCHAR GetFormChar(const CFX_Char *cur, const CFX_Char *prev, const CFX_Char *next) const = 0;
+};
+void FX_BidiLine(CFX_WideString &wsText, FX_INT32 iBaseLevel = 0);
+void FX_BidiLine(CFX_TxtCharArray &chars, FX_INT32 iCount, FX_INT32 iBaseLevel = 0);
+void FX_BidiLine(CFX_RTFCharArray &chars, FX_INT32 iCount, FX_INT32 iBaseLevel = 0);
class IFX_BidiChar
{
public:
diff --git a/core/include/fxcrt/fx_basic.h b/core/include/fxcrt/fx_basic.h
index 22ba611..0c84f54 100644
--- a/core/include/fxcrt/fx_basic.h
+++ b/core/include/fxcrt/fx_basic.h
@@ -1578,6 +1578,13 @@
} FX_ProgressiveStatus;
#define ProgressiveStatus FX_ProgressiveStatus
#define FX_NAMESPACE_DECLARE(namespace, type) namespace::type
+class IFX_Unknown
+{
+public:
+ virtual FX_DWORD Release() = 0;
+ virtual FX_DWORD AddRef() = 0;
+};
+#define FX_IsOdd(a) ((a) & 1)
class CFX_Vector_3by1 : public CFX_Object
{
diff --git a/core/include/fxcrt/fx_ext.h b/core/include/fxcrt/fx_ext.h
index 03ec488..ceba015 100644
--- a/core/include/fxcrt/fx_ext.h
+++ b/core/include/fxcrt/fx_ext.h
@@ -76,6 +76,24 @@
#ifdef __cplusplus
}
#endif
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct FX_GUID {
+ FX_DWORD data1;
+ FX_WORD data2;
+ FX_WORD data3;
+ FX_BYTE data4[8];
+} FX_GUID, * FX_LPGUID;
+typedef FX_GUID const * FX_LPCGUID;
+
+void FX_GUID_CreateV4(FX_LPGUID pGUID);
+
+void FX_GUID_ToString(FX_LPCGUID pGUID, CFX_ByteString &bsStr, FX_BOOL bSeparator = TRUE);
+#ifdef __cplusplus
+}
+#endif
template<class baseType>
class CFX_SSortTemplate
{
diff --git a/core/include/fxcrt/fx_stream.h b/core/include/fxcrt/fx_stream.h
index 8e298f7..0a3d1c4 100644
--- a/core/include/fxcrt/fx_stream.h
+++ b/core/include/fxcrt/fx_stream.h
@@ -162,6 +162,15 @@
};
IFX_FileStream* FX_CreateFileStream(FX_LPCSTR filename, FX_DWORD dwModes);
IFX_FileStream* FX_CreateFileStream(FX_LPCWSTR filename, FX_DWORD dwModes);
+class IFX_FileAccess
+{
+public:
+ virtual void Release() = 0;
+ virtual IFX_FileAccess* Retain() = 0;
+ virtual void GetPath(CFX_WideString& wsPath) = 0;
+ virtual IFX_FileStream* CreateFileStream(FX_DWORD dwModes) = 0;
+};
+IFX_FileAccess* FX_CreateDefaultFileAccess(FX_WSTR wsPath);
class IFX_MemoryStream : public IFX_FileStream
{
public:
diff --git a/core/include/fxcrt/fx_ucd.h b/core/include/fxcrt/fx_ucd.h
index 9e1862a..c87e459 100644
--- a/core/include/fxcrt/fx_ucd.h
+++ b/core/include/fxcrt/fx_ucd.h
@@ -88,6 +88,20 @@
FX_CHARTYPE_ArabicForm = (11 << FX_CHARTYPEBITS),
FX_CHARTYPE_Arabic = (12 << FX_CHARTYPEBITS),
};
+typedef struct _FX_CHARPROPERTIES {
+ union FX_CHARPROPERTIES_UNION{
+ struct FX_CHARPROPERTIES_BIT{
+ FX_DWORD dwBreakType : 6;
+ FX_DWORD dwBidiClass : 5;
+ FX_DWORD dwCharType : 4;
+ FX_DWORD dwRotation : 1;
+ FX_DWORD dwCJKSpecial : 1;
+ FX_DWORD dwVertIndex : 6;
+ FX_DWORD dwBidiIndex : 9;
+ };
+ FX_DWORD dwCharProps;
+ };
+} FX_CHARPROPERTIES;
FX_DWORD FX_GetUnicodeProperties(FX_WCHAR wch);
FX_BOOL FX_IsCtrlCode(FX_WCHAR ch);
FX_BOOL FX_IsRotationCode(FX_WCHAR ch);
@@ -95,4 +109,89 @@
FX_BOOL FX_IsBidiChar(FX_WCHAR wch);
FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, FX_BOOL bRTL, FX_BOOL bVertical);
FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, FX_DWORD dwProps, FX_BOOL bRTL, FX_BOOL bVertical);
+class CFX_Char : public CFX_Object
+{
+public:
+ CFX_Char() : m_wCharCode(0)
+ , m_nBreakType(0)
+ , m_nRotation(0)
+ , m_dwCharProps(0)
+ , m_dwCharStyles(0)
+ , m_iCharWidth(0)
+ , m_iHorizontalScale(100)
+ , m_iVertialScale(100)
+ {
+ }
+ CFX_Char(FX_WORD wCharCode, FX_DWORD dwCharProps)
+ : m_wCharCode(wCharCode)
+ , m_nBreakType(0)
+ , m_nRotation(0)
+ , m_dwCharProps(dwCharProps)
+ , m_dwCharStyles(0)
+ , m_iCharWidth(0)
+ , m_iHorizontalScale(100)
+ , m_iVertialScale(100)
+ {
+ }
+ FX_DWORD GetCharType() const
+ {
+ return m_dwCharProps & FX_CHARTYPEBITSMASK;
+ }
+ FX_WORD m_wCharCode;
+ FX_BYTE m_nBreakType;
+ FX_INT8 m_nRotation;
+ FX_DWORD m_dwCharProps;
+ FX_DWORD m_dwCharStyles;
+ FX_INT32 m_iCharWidth;
+ FX_INT32 m_iHorizontalScale;
+ FX_INT32 m_iVertialScale;
+};
+typedef CFX_ArrayTemplate<CFX_Char> CFX_CharArray;
+class CFX_TxtChar : public CFX_Char
+{
+public:
+ CFX_TxtChar() : CFX_Char()
+ , m_dwStatus(0)
+ , m_iBidiClass(0)
+ , m_iBidiLevel(0)
+ , m_iBidiPos(0)
+ , m_iBidiOrder(0)
+ , m_pUserData(NULL)
+ {
+ }
+ FX_DWORD m_dwStatus;
+ FX_INT16 m_iBidiClass;
+ FX_INT16 m_iBidiLevel;
+ FX_INT16 m_iBidiPos;
+ FX_INT16 m_iBidiOrder;
+ FX_LPVOID m_pUserData;
+};
+typedef CFX_ArrayTemplate<CFX_TxtChar> CFX_TxtCharArray;
+class CFX_RTFChar : public CFX_Char
+{
+public:
+ CFX_RTFChar() : CFX_Char()
+ , m_dwStatus(0)
+ , m_iFontSize(0)
+ , m_iFontHeight(0)
+ , m_iBidiClass(0)
+ , m_iBidiLevel(0)
+ , m_iBidiPos(0)
+ , m_dwLayoutStyles(0)
+ , m_dwIdentity(0)
+ , m_pUserData(NULL)
+ {
+ }
+ FX_DWORD m_dwStatus;
+ FX_INT32 m_iFontSize;
+ FX_INT32 m_iFontHeight;
+ FX_INT16 m_iBidiClass;
+ FX_INT16 m_iBidiLevel;
+ FX_INT16 m_iBidiPos;
+ FX_INT16 m_iBidiOrder;
+ FX_DWORD m_dwLayoutStyles;
+ FX_DWORD m_dwIdentity;
+ IFX_Unknown *m_pUserData;
+};
+typedef CFX_ArrayTemplate<CFX_RTFChar> CFX_RTFCharArray;
#endif
diff --git a/core/include/fxge/fx_font.h b/core/include/fxge/fx_font.h
index 52f8f30..8744919 100644
--- a/core/include/fxge/fx_font.h
+++ b/core/include/fxge/fx_font.h
@@ -29,6 +29,7 @@
#define FXFONT_ITALIC 0x40
#define FXFONT_BOLD 0x40000
#define FXFONT_USEEXTERNATTR 0x80000
+#define FXFONT_EXACTMATCH 0x80000000
#define FXFONT_CIDFONT 0x100000
#define FXFONT_ANSI_CHARSET 0
#define FXFONT_DEFAULT_CHARSET 1
@@ -61,7 +62,10 @@
FX_BOOL LoadEmbedded(FX_LPCBYTE data, FX_DWORD size);
- FX_BOOL LoadFile(IFX_FileRead* pFile);
+ FX_BOOL LoadFile(IFX_FileRead* pFile, int nFaceIndex = 0, int* pFaceCount = NULL);
+
+ FX_BOOL LoadClone(const CFX_Font* pFont);
+
FXFT_Face GetFace() const
{
@@ -141,6 +145,7 @@
FX_BOOL m_bEmbedded;
FX_BOOL m_bVertical;
+ FX_BOOL m_bLogic;
void* m_pOwnedStream;
};
#define ENCODING_INTERNAL 0
@@ -157,6 +162,32 @@
virtual FX_DWORD CharCodeFromUnicode(FX_WCHAR Unicode) const = 0;
};
IFX_FontEncoding* FXGE_CreateUnicodeEncoding(CFX_Font* pFont);
+#define FXFM_ENC_TAG(a, b, c, d) (((FX_DWORD)(a) << 24) | ((FX_DWORD)(b) << 16) | ((FX_DWORD)(c) << 8) | (FX_DWORD)(d))
+#define FXFM_ENCODING_NONE FXFM_ENC_TAG(0, 0, 0, 0)
+#define FXFM_ENCODING_MS_SYMBOL FXFM_ENC_TAG('s', 'y', 'm', 'b')
+#define FXFM_ENCODING_UNICODE FXFM_ENC_TAG('u', 'n', 'i', 'c')
+#define FXFM_ENCODING_MS_SJIS FXFM_ENC_TAG('s', 'j', 'i', 's')
+#define FXFM_ENCODING_MS_GB2312 FXFM_ENC_TAG('g', 'b', ' ', ' ')
+#define FXFM_ENCODING_MS_BIG5 FXFM_ENC_TAG('b', 'i', 'g', '5')
+#define FXFM_ENCODING_MS_WANSUNG FXFM_ENC_TAG('w', 'a', 'n', 's')
+#define FXFM_ENCODING_MS_JOHAB FXFM_ENC_TAG('j', 'o', 'h', 'a')
+#define FXFM_ENCODING_ADOBE_STANDARD FXFM_ENC_TAG('A', 'D', 'O', 'B')
+#define FXFM_ENCODING_ADOBE_EXPERT FXFM_ENC_TAG('A', 'D', 'B', 'E')
+#define FXFM_ENCODING_ADOBE_CUSTOM FXFM_ENC_TAG('A', 'D', 'B', 'C')
+#define FXFM_ENCODING_ADOBE_LATIN_1 FXFM_ENC_TAG('l', 'a', 't', '1')
+#define FXFM_ENCODING_OLD_LATIN_2 FXFM_ENC_TAG('l', 'a', 't', '2')
+#define FXFM_ENCODING_APPLE_ROMAN FXFM_ENC_TAG('a', 'r', 'm', 'n')
+class IFX_FontEncodingEx : public IFX_FontEncoding
+{
+public:
+
+ virtual FX_DWORD GlyphIndexFromName(FX_LPCSTR pStrName) = 0;
+
+ virtual CFX_ByteString NameFromGlyphIndex(FX_DWORD dwGlyphIndex) = 0;
+
+ virtual FX_DWORD CharCodeFromGlyphIndex(FX_DWORD dwGlyphIndex) = 0;
+};
+IFX_FontEncodingEx* FX_CreateFontEncodingEx(CFX_Font* pFont, FX_DWORD nEncodingID = FXFM_ENCODING_NONE);
#define FXFONT_SUBST_MM 0x01
#define FXFONT_SUBST_GLYPHPATH 0x04
#define FXFONT_SUBST_CLEARTYPE 0x08
@@ -277,6 +308,7 @@
}
virtual FXFT_Face FindSubstFont(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags,
int weight, int italic_angle, int CharsetCP, CFX_SubstFont* pSubstFont);
+ FXFT_Face FindSubstFontByUnicode(FX_DWORD dwUnicode, FX_DWORD flags, int weight, int italic_angle);
private:
CFX_ByteString GetPSNameFromTT(void* hFont);
CFX_ByteString MatchInstalledFonts(const CFX_ByteString& norm_name);
@@ -298,6 +330,10 @@
virtual void Release() = 0;
virtual FX_BOOL EnumFontList(CFX_FontMapper* pMapper) = 0;
virtual void* MapFont(int weight, FX_BOOL bItalic, int charset, int pitch_family, FX_LPCSTR face, FX_BOOL& bExact) = 0;
+ virtual void* MapFontByUnicode(FX_DWORD dwUnicode, int weight, FX_BOOL bItalic, int pitch_family)
+ {
+ return NULL;
+ }
virtual void* GetFont(FX_LPCSTR face) = 0;
virtual FX_DWORD GetFontData(void* hFont, FX_DWORD table, FX_LPBYTE buffer, FX_DWORD size) = 0;
virtual FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name) = 0;
@@ -321,6 +357,7 @@
virtual void Release();
virtual FX_BOOL EnumFontList(CFX_FontMapper* pMapper);
virtual void* MapFont(int weight, FX_BOOL bItalic, int charset, int pitch_family, FX_LPCSTR face, FX_BOOL& bExact);
+ virtual void* MapFontByUnicode(FX_DWORD dwUnicode, int weight, FX_BOOL bItalic, int pitch_family);
virtual void* GetFont(FX_LPCSTR face);
virtual FX_DWORD GetFontData(void* hFont, FX_DWORD table, FX_LPBYTE buffer, FX_DWORD size);
virtual void DeleteFont(void* hFont);
diff --git a/core/src/fpdfdoc/doc_formfield.cpp b/core/src/fpdfdoc/doc_formfield.cpp
index a2f0fbd..64e9c28 100644
--- a/core/src/fpdfdoc/doc_formfield.cpp
+++ b/core/src/fpdfdoc/doc_formfield.cpp
@@ -797,6 +797,77 @@
}
return -1;
}
+int CPDF_FormField::InsertOption(CFX_WideString csOptLabel, int index, FX_BOOL bNotify)
+{
+ if (csOptLabel.IsEmpty()) return -1;
+
+ if (bNotify && m_pForm->m_pFormNotify != NULL)
+ {
+ int iRet = 0;
+ if (GetType() == ListBox) iRet = m_pForm->m_pFormNotify->BeforeSelectionChange(this, csOptLabel);
+ if (GetType() == ComboBox) iRet = m_pForm->m_pFormNotify->BeforeValueChange(this, csOptLabel);
+ if (iRet < 0) return -1;
+ }
+
+ CFX_ByteString csStr = PDF_EncodeText(csOptLabel, csOptLabel.GetLength());
+ CPDF_Array* pOpt = NULL;
+ CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict, "Opt");
+ if (pValue == NULL || pValue->GetType() != PDFOBJ_ARRAY)
+ {
+ pOpt = CPDF_Array::Create();
+ if (pOpt == NULL) return -1;
+ m_pDict->SetAt("Opt", pOpt);
+ }
+ else
+ pOpt = (CPDF_Array*)pValue;
+ int iCount = (int)pOpt->GetCount();
+ if (index < 0 || index >= iCount)
+ {
+ pOpt->AddString(csStr);
+ index = iCount;
+ }
+ else {
+ CPDF_String* pString = CPDF_String::Create(csStr);
+ if (pString == NULL) return -1;
+ pOpt->InsertAt(index, pString);
+ }
+
+ if (bNotify && m_pForm->m_pFormNotify != NULL)
+ {
+ if (GetType() == ListBox) m_pForm->m_pFormNotify->AfterSelectionChange(this);
+ if (GetType() == ComboBox) m_pForm->m_pFormNotify->AfterValueChange(this);
+ }
+ m_pForm->m_bUpdated = TRUE;
+ return index;
+}
+FX_BOOL CPDF_FormField::ClearOptions(FX_BOOL bNotify)
+{
+ if (bNotify && m_pForm->m_pFormNotify != NULL)
+ {
+ int iRet = 0;
+ CFX_WideString csValue;
+ int iIndex = GetSelectedIndex(0);
+ if (iIndex >= 0) csValue = GetOptionLabel(iIndex);
+ if (GetType() == ListBox) iRet = m_pForm->m_pFormNotify->BeforeSelectionChange(this, csValue);
+ if (GetType() == ComboBox) iRet = m_pForm->m_pFormNotify->BeforeValueChange(this, csValue);
+ if (iRet < 0) return FALSE;
+ }
+
+ m_pDict->RemoveAt("Opt");
+ m_pDict->RemoveAt("V");
+ m_pDict->RemoveAt("DV");
+ m_pDict->RemoveAt("I");
+ m_pDict->RemoveAt("TI");
+
+ if (bNotify && m_pForm->m_pFormNotify != NULL)
+ {
+ if (GetType() == ListBox) m_pForm->m_pFormNotify->AfterSelectionChange(this);
+ if (GetType() == ComboBox) m_pForm->m_pFormNotify->AfterValueChange(this);
+ }
+
+ m_pForm->m_bUpdated = TRUE;
+ return TRUE;
+}
FX_BOOL CPDF_FormField::CheckControl(int iControlIndex, FX_BOOL bChecked, FX_BOOL bNotify)
{
ASSERT(GetType() == CheckBox || GetType() == RadioButton);
diff --git a/core/src/fxcodec/codec/codec_int.h b/core/src/fxcodec/codec/codec_int.h
index 78672e6..3cbdce9 100644
--- a/core/src/fxcodec/codec/codec_int.h
+++ b/core/src/fxcodec/codec/codec_int.h
@@ -142,13 +142,67 @@
virtual void* Start();
virtual void Finish(void* pContext);
virtual void Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size);
- virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps);
+ virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps, CFX_DIBAttribute* pAttribute = NULL);
virtual FX_BOOL StartScanline(void* pContext, int down_scale);
virtual FX_BOOL ReadScanline(void* pContext, FX_LPBYTE dest_buf);
virtual FX_DWORD GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr);
protected:
IFX_JpegProvider* m_pExtProvider;
};
+#define PNG_ERROR_SIZE 256
+class CCodec_PngModule : public ICodec_PngModule
+{
+public:
+ CCodec_PngModule()
+ {
+ FXSYS_memset8(m_szLastError, '\0', PNG_ERROR_SIZE);
+ }
+
+ virtual void* Start(void* pModule);
+ virtual void Finish(void* pContext);
+ virtual FX_BOOL Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_DIBAttribute* pAttribute);
+protected:
+ FX_CHAR m_szLastError[PNG_ERROR_SIZE];
+};
+class CCodec_GifModule : public ICodec_GifModule
+{
+public:
+ CCodec_GifModule()
+ {
+ FXSYS_memset8(m_szLastError, '\0', 256);
+ }
+ virtual void* Start(void* pModule);
+ virtual void Finish(void* pContext);
+ virtual FX_DWORD GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr);
+ virtual void Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size);
+
+ virtual FX_INT32 ReadHeader(void* pContext, int* width, int* height,
+ int* pal_num, void** pal_pp, int* bg_index, CFX_DIBAttribute* pAttribute);
+
+ virtual FX_INT32 LoadFrameInfo(void* pContext, int* frame_num);
+
+ virtual FX_INT32 LoadFrame(void* pContext, int frame_num, CFX_DIBAttribute* pAttribute);
+
+protected:
+ FX_CHAR m_szLastError[256];
+};
+class CCodec_BmpModule : public ICodec_BmpModule
+{
+public:
+ CCodec_BmpModule()
+ {
+ FXSYS_memset8(m_szLastError, '\0', 256);
+ }
+ virtual void* Start(void* pModule);
+ virtual void Finish(void* pContext);
+ virtual FX_DWORD GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr);
+ virtual void Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size);
+ virtual FX_INT32 ReadHeader(void* pContext, FX_INT32* width, FX_INT32* height, FX_BOOL* tb_flag, FX_INT32* components, FX_INT32* pal_num, FX_DWORD** pal_pp, CFX_DIBAttribute* pAttribute);
+ virtual FX_INT32 LoadImage(void* pContext);
+
+protected:
+ FX_CHAR m_szLastError[256];
+};
class CCodec_IccModule : public ICodec_IccModule
{
public:
@@ -196,6 +250,15 @@
FX_BOOL Decode(void* ctx, FX_LPBYTE dest_data, int pitch, FX_BOOL bTranslateColor, FX_LPBYTE offsets);
void DestroyDecoder(void* ctx);
};
+class CCodec_TiffModule : public ICodec_TiffModule
+{
+public:
+ virtual FX_LPVOID CreateDecoder(IFX_FileRead* file_ptr);
+ virtual void GetFrames(FX_LPVOID ctx, FX_INT32& frames);
+ virtual FX_BOOL LoadFrameInfo(FX_LPVOID ctx, FX_INT32 frame, FX_DWORD& width, FX_DWORD& height, FX_DWORD& comps, FX_DWORD& bpc, CFX_DIBAttribute* pAttribute = NULL);
+ virtual FX_BOOL Decode(FX_LPVOID ctx, class CFX_DIBitmap* pDIBitmap);
+ virtual void DestroyDecoder(FX_LPVOID ctx);
+};
#include "../jbig2/JBig2_Context.h"
class CPDF_Jbig2Interface : public CFX_Object, public CJBig2_Module
{
@@ -270,3 +333,27 @@
CPDF_Jbig2Interface m_Module;
private:
};
+class CFX_DIBAttributeExif : public IFX_DIBAttributeExif
+{
+public:
+ CFX_DIBAttributeExif();
+ ~CFX_DIBAttributeExif();
+ virtual FX_BOOL GetInfo(FX_WORD tag, FX_LPVOID val);
+
+ FX_BOOL ParseExif(CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pHead, FX_LPBYTE data, FX_DWORD len, CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pVal);
+
+ typedef FX_WORD (*_Read2Bytes)(FX_LPBYTE data);
+ typedef FX_DWORD (*_Read4Bytes)(FX_LPBYTE data);
+ FX_LPBYTE ParseExifIFH(FX_LPBYTE data, FX_DWORD len, _Read2Bytes* pReadWord, _Read4Bytes* pReadDword);
+ FX_BOOL ParseExifIFD(CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pMap, FX_LPBYTE data, FX_DWORD len);
+
+ FX_LPBYTE m_pExifData;
+
+ FX_DWORD m_dwExifDataLen;
+
+ void clear();
+ _Read2Bytes m_readWord;
+ _Read4Bytes m_readDword;
+ CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE> m_TagHead;
+ CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE> m_TagVal;
+};
diff --git a/core/src/fxcodec/codec/fx_codec.cpp b/core/src/fxcodec/codec/fx_codec.cpp
index 456ec40..b2f70c7 100644
--- a/core/src/fxcodec/codec/fx_codec.cpp
+++ b/core/src/fxcodec/codec/fx_codec.cpp
@@ -14,6 +14,10 @@
m_pJpxModule = FX_NEW CCodec_JpxModule;
m_pJbig2Module = FX_NEW CCodec_Jbig2Module;
m_pIccModule = FX_NEW CCodec_IccModule;
+ m_pPngModule = FX_NEW CCodec_PngModule;
+ m_pGifModule = FX_NEW CCodec_GifModule;
+ m_pBmpModule = FX_NEW CCodec_BmpModule;
+ m_pTiffModule = FX_NEW CCodec_TiffModule;
m_pFlateModule = FX_NEW CCodec_FlateModule;
}
CCodec_ModuleMgr::~CCodec_ModuleMgr()
@@ -249,6 +253,343 @@
{
delete this;
}
+CFX_DIBAttribute::CFX_DIBAttribute()
+{
+ FXSYS_memset32(this, 0, sizeof(CFX_DIBAttribute));
+ m_nXDPI = -1;
+ m_nYDPI = -1;
+ m_fAspectRatio = -1.0f;
+ m_pExif = FX_NEW CFX_DIBAttributeExif;
+}
+CFX_DIBAttribute::~CFX_DIBAttribute()
+{
+ if (m_pExif) {
+ delete m_pExif;
+ }
+}
+CFX_DIBAttributeExif::CFX_DIBAttributeExif()
+{
+ m_pExifData = NULL;
+ m_dwExifDataLen = 0;
+}
+CFX_DIBAttributeExif::~CFX_DIBAttributeExif()
+{
+ clear();
+}
+void CFX_DIBAttributeExif::clear()
+{
+ if (m_pExifData) {
+ FX_Free(m_pExifData);
+ }
+ m_pExifData = NULL;
+ FX_DWORD key = 0;
+ FX_LPBYTE buf = NULL;
+ FX_POSITION pos = NULL;
+ pos = m_TagHead.GetStartPosition();
+ while (pos) {
+ m_TagHead.GetNextAssoc(pos, key, buf);
+ if (buf) {
+ FX_Free(buf);
+ }
+ }
+ m_TagHead.RemoveAll();
+ pos = m_TagVal.GetStartPosition();
+ while (pos) {
+ m_TagVal.GetNextAssoc(pos, key, buf);
+ if (buf) {
+ FX_Free(buf);
+ }
+ }
+ m_TagVal.RemoveAll();
+}
+static FX_WORD _Read2BytesL(FX_LPBYTE data)
+{
+ ASSERT(data);
+ return data[0] | (data[1] << 8);
+}
+static FX_WORD _Read2BytesB(FX_LPBYTE data)
+{
+ ASSERT(data);
+ return data[1] | (data[0] << 8);
+}
+static FX_DWORD _Read4BytesL(FX_LPBYTE data)
+{
+ return _Read2BytesL(data) | (_Read2BytesL(data + 2) << 16);
+}
+static FX_DWORD _Read4BytesB(FX_LPBYTE data)
+{
+ return _Read2BytesB(data + 2) | (_Read2BytesB(data) << 16);
+}
+typedef FX_WORD (*_Read2Bytes) (FX_LPBYTE data);
+typedef FX_DWORD (*_Read4Bytes) (FX_LPBYTE data);
+typedef void (*_Write2Bytes) (FX_LPBYTE data, FX_WORD val);
+typedef void (*_Write4Bytes) (FX_LPBYTE data, FX_DWORD val);
+FX_LPBYTE CFX_DIBAttributeExif::ParseExifIFH(FX_LPBYTE data, FX_DWORD len, _Read2Bytes* pReadWord, _Read4Bytes* pReadDword)
+{
+ if (len > 8) {
+ FX_BOOL tag = FALSE;
+ if (FXSYS_memcmp32(data, "\x49\x49\x2a\x00", 4) == 0) {
+ if (pReadWord) {
+ *pReadWord = _Read2BytesL;
+ }
+ if (pReadDword) {
+ *pReadDword = _Read4BytesL;
+ }
+ tag = TRUE;
+ } else if (FXSYS_memcmp32(data, "\x4d\x4d\x00\x2a", 4) == 0) {
+ if (pReadWord) {
+ *pReadWord = _Read2BytesB;
+ }
+ if (pReadDword) {
+ *pReadDword = _Read4BytesB;
+ }
+ tag = TRUE;
+ }
+ if (tag) {
+ data += 4;
+ if (pReadDword) {
+ data += (*pReadDword)(data) - 4;
+ } else {
+ data += 4;
+ }
+ }
+ }
+ return data;
+}
+FX_BOOL CFX_DIBAttributeExif::ParseExifIFD(CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pMap, FX_LPBYTE data, FX_DWORD len)
+{
+ if (pMap && data) {
+ if (len > 8) {
+ FX_WORD wTagNum = m_readWord(data);
+ data += 2;
+ FX_DWORD wTag;
+ FX_LPBYTE buf;
+ while (wTagNum--) {
+ wTag = m_readWord(data);
+ data += 2;
+ if (!pMap->Lookup(wTag, buf)) {
+ buf = FX_Alloc(FX_BYTE, 10);
+ if (buf == NULL) {
+ return FALSE;
+ }
+ FXSYS_memcpy32(buf, data, 10);
+ pMap->SetAt(wTag, buf);
+ }
+ data += 10;
+ }
+ FX_DWORD dwIFDOffset;
+ dwIFDOffset = m_readDword(data);
+ while (dwIFDOffset && dwIFDOffset < len) {
+ data = m_pExifData + dwIFDOffset;
+ wTagNum = m_readWord(data);
+ data += 2;
+ while (wTagNum--) {
+ wTag = m_readWord(data);
+ data += 2;
+ if (!pMap->Lookup(wTag, buf)) {
+ buf = FX_Alloc(FX_BYTE, 10);
+ if (buf == NULL) {
+ return FALSE;
+ }
+ FXSYS_memcpy32(buf, data, 10);
+ pMap->SetAt(wTag, buf);
+ }
+ data += 10;
+ }
+ dwIFDOffset = m_readDword(data);
+ }
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+enum FX_ExifDataType {
+ FX_UnsignedByte = 1,
+ FX_AscString,
+ FX_UnsignedShort,
+ FX_UnsignedLong,
+ FX_UnsignedRation,
+ FX_SignedByte,
+ FX_Undefined,
+ FX_SignedShort,
+ FX_SignedLong,
+ FX_SignedRation,
+ FX_SignedFloat,
+ FX_DoubleFloat
+};
+FX_BOOL CFX_DIBAttributeExif::ParseExif(CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pHead, FX_LPBYTE data, FX_DWORD len, CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pVal)
+{
+ if (pHead && data && pVal) {
+ if (len > 8) {
+ FX_LPBYTE old_data = data;
+ data = ParseExifIFH(data, len, &m_readWord, &m_readDword);
+ if (data == old_data) {
+ return FALSE;
+ }
+ if (pHead->GetCount() == 0) {
+ if (!ParseExifIFD(pHead, data, len)) {
+ return FALSE;
+ }
+ }
+ FX_DWORD dwModuleNum;
+ FX_WORD type;
+ FX_DWORD dwSize;
+ FX_DWORD tag;
+ FX_LPBYTE head;
+ FX_POSITION pos = pHead->GetStartPosition();
+ while (pos) {
+ pHead->GetNextAssoc(pos, tag, head);
+ FX_LPBYTE val = NULL, buf = NULL, temp = NULL;
+ int i;
+ if (head) {
+ type = m_readWord(head);
+ head += 2;
+ dwModuleNum = m_readDword(head);
+ head += 4;
+ switch (type) {
+ case FX_UnsignedByte:
+ case FX_AscString:
+ case FX_SignedByte:
+ case FX_Undefined:
+ dwSize = dwModuleNum;
+ val = FX_Alloc(FX_BYTE, dwSize);
+ if (val == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy32(val, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy32(val, head, dwSize);
+ }
+ break;
+ case FX_UnsignedShort:
+ case FX_SignedShort:
+ dwSize = dwModuleNum << 1;
+ val = FX_Alloc(FX_BYTE, dwSize);
+ if (val == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy32(val, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy32(val, head, dwSize);
+ }
+ buf = val;
+ for(i = 0; i < (int)dwModuleNum; i ++) {
+ *(FX_WORD*)buf = m_readWord(buf);
+ buf += 2;
+ }
+ break;
+ case FX_UnsignedLong:
+ case FX_SignedLong:
+ case FX_SignedFloat:
+ dwSize = dwModuleNum << 2;
+ val = FX_Alloc(FX_BYTE, dwSize);
+ if (val == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy32(val, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy32(val, head, dwSize);
+ }
+ buf = val;
+ for(i = 0; i < (int)dwModuleNum; i ++) {
+ *(FX_DWORD*)buf = m_readDword(buf);
+ buf += 4;
+ }
+ break;
+ case FX_UnsignedRation:
+ case FX_SignedRation: {
+ dwSize = dwModuleNum << 3;
+ buf = FX_Alloc(FX_BYTE, dwSize);
+ if (buf == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy32(buf, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy32(buf, head, dwSize);
+ }
+ temp = buf;
+ val = FX_Alloc(FX_BYTE, dwSize / 2);
+ if (val == NULL) {
+ FX_Free(buf);
+ return FALSE;
+ }
+ for(i = 0; i < (int)dwModuleNum; i ++) {
+ *(FX_DWORD*)temp = m_readDword(temp);
+ *(FX_DWORD*)(temp + 4) = m_readDword(temp + 4);
+ FX_DWORD* lNumerator = (FX_DWORD*)temp;
+ FX_DWORD* lNenominator = (FX_DWORD*)(temp + 4);
+ *(FX_FLOAT*)(val + i * 4) = (FX_FLOAT)(*lNumerator) / (FX_FLOAT)(*lNenominator);
+ temp += 8;
+ }
+ FX_Free(buf);
+ }
+ break;
+ case FX_DoubleFloat:
+ dwSize = dwModuleNum << 3;
+ val = FX_Alloc(FX_BYTE, dwSize);
+ if (val == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy32(val, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy32(val, head, dwSize);
+ }
+ buf = val;
+ for(i = 0; i < (int)dwModuleNum; i ++) {
+ *(FX_DWORD*)buf = m_readDword(buf);
+ *(FX_DWORD*)(buf + 4) = m_readDword(buf + 4);
+ buf += 8;
+ }
+ break;
+ default:
+ return FALSE;
+ }
+ }
+ pVal->SetAt(tag, val);
+ }
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+#define FXEXIF_INFOCONVERT(T) {T* src = (T*)ptr; T* dst = (T*)val; *dst = *src;}
+FX_BOOL CFX_DIBAttributeExif::GetInfo( FX_WORD tag, FX_LPVOID val )
+{
+ if (m_TagVal.GetCount() == 0) {
+ if (!ParseExif(&m_TagHead, m_pExifData, m_dwExifDataLen, &m_TagVal)) {
+ return FALSE;
+ }
+ }
+ FX_LPBYTE ptr = NULL;
+ if (m_TagVal.Lookup(tag, ptr)) {
+ switch (tag) {
+ case EXIFTAG_USHORT_RESUNIT:
+ FXEXIF_INFOCONVERT(FX_WORD);
+ {
+ FX_WORD* ptr = (FX_WORD*)val;
+ *ptr -= 1;
+ }
+ break;
+ case EXIFTAG_FLOAT_DPIX:
+ case EXIFTAG_FLOAT_DPIY:
+ FXEXIF_INFOCONVERT(FX_FLOAT);
+ break;
+ case EXIFTAG_USHORT_ORIENTATION:
+ FXEXIF_INFOCONVERT(FX_WORD);
+ break;
+ default: {
+ FX_LPBYTE* dst = (FX_LPBYTE*)val;
+ *dst = ptr;
+ }
+ }
+ }
+ return TRUE;
+}
class CCodec_RLScanlineDecoder : public CCodec_ScanlineDecoder
{
public:
diff --git a/core/src/fxcodec/codec/fx_codec_bmp.cpp b/core/src/fxcodec/codec/fx_codec_bmp.cpp
new file mode 100644
index 0000000..4e974e2
--- /dev/null
+++ b/core/src/fxcodec/codec/fx_codec_bmp.cpp
@@ -0,0 +1,124 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../../include/fxcodec/fx_codec.h"
+#include "../../../include/fxge/fx_dib.h"
+#include "codec_int.h"
+#include "../lbmp/fx_bmp.h"
+struct FXBMP_Context {
+ bmp_decompress_struct_p bmp_ptr;
+ void* parent_ptr;
+ void* child_ptr;
+
+ void* (*m_AllocFunc)(unsigned int);
+ void (*m_FreeFunc)(void*);
+};
+extern "C" {
+ static void* _bmp_alloc_func(unsigned int size)
+ {
+ return FX_Alloc(char, size);
+ }
+ static void _bmp_free_func(void* p)
+ {
+ if(p != NULL) {
+ FX_Free(p);
+ }
+ }
+};
+static void _bmp_error_data(bmp_decompress_struct_p bmp_ptr, FX_LPCSTR err_msg)
+{
+ FXSYS_strncpy((char*)bmp_ptr->err_ptr, err_msg, BMP_MAX_ERROR_SIZE - 1);
+ longjmp(bmp_ptr->jmpbuf, 1);
+}
+static void _bmp_read_scanline(bmp_decompress_struct_p bmp_ptr, FX_INT32 row_num, FX_LPBYTE row_buf)
+{
+ FXBMP_Context* p = (FXBMP_Context*)bmp_ptr->context_ptr;
+ CCodec_BmpModule* pModule = (CCodec_BmpModule*)p->parent_ptr;
+ pModule->ReadScanlineCallback(p->child_ptr, row_num, row_buf);
+}
+static FX_BOOL _bmp_get_data_position(bmp_decompress_struct_p bmp_ptr, FX_DWORD rcd_pos)
+{
+ FXBMP_Context* p = (FXBMP_Context*)bmp_ptr->context_ptr;
+ CCodec_BmpModule* pModule = (CCodec_BmpModule*)p->parent_ptr;
+ return pModule->InputImagePositionBufCallback(p->child_ptr, rcd_pos);
+}
+void* CCodec_BmpModule::Start(void* pModule)
+{
+ FXBMP_Context* p = (FXBMP_Context*)FX_Alloc(FX_BYTE, sizeof(FXBMP_Context));
+ if (p == NULL) {
+ return NULL;
+ }
+ FXSYS_memset32(p, 0, sizeof(FXBMP_Context));
+ if(p == NULL) {
+ return NULL;
+ }
+ p->m_AllocFunc = _bmp_alloc_func;
+ p->m_FreeFunc = _bmp_free_func;
+ p->bmp_ptr = NULL;
+ p->parent_ptr = (void*)this;
+ p->child_ptr = pModule;
+ p->bmp_ptr = _bmp_create_decompress();
+ if (p->bmp_ptr == NULL) {
+ FX_Free(p);
+ return NULL;
+ }
+ p->bmp_ptr->context_ptr = (void*)p;
+ p->bmp_ptr->err_ptr = m_szLastError;
+ p->bmp_ptr->_bmp_error_fn = _bmp_error_data;
+ p->bmp_ptr->_bmp_get_row_fn = _bmp_read_scanline;
+ p->bmp_ptr->_bmp_get_data_position_fn = _bmp_get_data_position;
+ return p;
+}
+void CCodec_BmpModule::Finish(void* pContext)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ if(p != NULL) {
+ _bmp_destroy_decompress(&p->bmp_ptr);
+ p->m_FreeFunc(p);
+ }
+}
+FX_INT32 CCodec_BmpModule::ReadHeader(void* pContext, FX_INT32* width, FX_INT32* height, FX_BOOL* tb_flag, FX_INT32* components, FX_INT32* pal_num, FX_DWORD** pal_pp, CFX_DIBAttribute* pAttribute)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ if(setjmp(p->bmp_ptr->jmpbuf)) {
+ return 0;
+ }
+ FX_INT32 ret = _bmp_read_header(p->bmp_ptr);
+ if (ret != 1) {
+ return ret;
+ }
+ *width = p->bmp_ptr->width;
+ *height = p->bmp_ptr->height;
+ *tb_flag = p->bmp_ptr->imgTB_flag;
+ *components = p->bmp_ptr->components;
+ *pal_num = p->bmp_ptr->pal_num;
+ *pal_pp = p->bmp_ptr->pal_ptr;
+ if (pAttribute) {
+ pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_METER;
+ pAttribute->m_nXDPI = p->bmp_ptr->dpi_x;
+ pAttribute->m_nYDPI = p->bmp_ptr->dpi_y;
+ pAttribute->m_nBmpCompressType = p->bmp_ptr->compress_flag;
+ }
+ return 1;
+}
+FX_INT32 CCodec_BmpModule::LoadImage(void* pContext)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ if(setjmp(p->bmp_ptr->jmpbuf)) {
+ return 0;
+ }
+ return _bmp_decode_image(p->bmp_ptr);
+}
+FX_DWORD CCodec_BmpModule::GetAvailInput(void* pContext, FX_LPBYTE* avial_buf_ptr)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ return _bmp_get_avail_input(p->bmp_ptr, avial_buf_ptr);
+}
+void CCodec_BmpModule::Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ _bmp_input_buffer(p->bmp_ptr, (FX_LPBYTE)src_buf, src_size);
+}
diff --git a/core/src/fxcodec/codec/fx_codec_gif.cpp b/core/src/fxcodec/codec/fx_codec_gif.cpp
new file mode 100644
index 0000000..1fc708d
--- /dev/null
+++ b/core/src/fxcodec/codec/fx_codec_gif.cpp
@@ -0,0 +1,176 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../../include/fxcodec/fx_codec.h"
+#include "../../../include/fxge/fx_dib.h"
+#include "codec_int.h"
+#include "../lgif/fx_gif.h"
+struct FXGIF_Context {
+ gif_decompress_struct_p gif_ptr;
+ void* parent_ptr;
+ void* child_ptr;
+
+ void* (*m_AllocFunc)(unsigned int);
+ void (*m_FreeFunc)(void*);
+};
+extern "C" {
+ static void* _gif_alloc_func(unsigned int size)
+ {
+ return FX_Alloc(char, size);
+ }
+ static void _gif_free_func(void* p)
+ {
+ if(p != NULL) {
+ FX_Free(p);
+ }
+ }
+};
+static void _gif_error_data(gif_decompress_struct_p gif_ptr, FX_LPCSTR err_msg)
+{
+ FXSYS_strncpy((char*)gif_ptr->err_ptr, err_msg, GIF_MAX_ERROR_SIZE - 1);
+ longjmp(gif_ptr->jmpbuf, 1);
+}
+static FX_LPBYTE _gif_ask_buf_for_pal(gif_decompress_struct_p gif_ptr, FX_INT32 pal_size)
+{
+ FXGIF_Context* p = (FXGIF_Context*)gif_ptr->context_ptr;
+ CCodec_GifModule* pModule = (CCodec_GifModule*)p->parent_ptr;
+ return pModule->AskLocalPaletteBufCallback(p->child_ptr,
+ _gif_get_frame_num(gif_ptr),
+ pal_size);
+}
+static void _gif_record_current_position(gif_decompress_struct_p gif_ptr, FX_DWORD* cur_pos_ptr)
+{
+ FXGIF_Context* p = (FXGIF_Context*)gif_ptr->context_ptr;
+ CCodec_GifModule* pModule = (CCodec_GifModule*)p->parent_ptr;
+ pModule->RecordCurrentPositionCallback(p->child_ptr, *cur_pos_ptr);
+}
+static void _gif_read_scanline(gif_decompress_struct_p gif_ptr, FX_INT32 row_num, FX_LPBYTE row_buf)
+{
+ FXGIF_Context* p = (FXGIF_Context*)gif_ptr->context_ptr;
+ CCodec_GifModule* pModule = (CCodec_GifModule*)p->parent_ptr;
+ pModule->ReadScanlineCallback(p->child_ptr, row_num, row_buf);
+}
+static FX_BOOL _gif_get_record_position(gif_decompress_struct_p gif_ptr, FX_DWORD cur_pos,
+ FX_INT32 left, FX_INT32 top, FX_INT32 width, FX_INT32 height,
+ FX_INT32 pal_num, void* pal_ptr,
+ FX_INT32 delay_time, FX_BOOL user_input,
+ FX_INT32 trans_index, FX_INT32 disposal_method, FX_BOOL interlace)
+{
+ FXGIF_Context* p = (FXGIF_Context*)gif_ptr->context_ptr;
+ CCodec_GifModule* pModule = (CCodec_GifModule*)p->parent_ptr;
+ return pModule->InputRecordPositionBufCallback(p->child_ptr, cur_pos, FX_RECT(left, top, left + width, top + height),
+ pal_num, pal_ptr, delay_time, user_input, trans_index, disposal_method, interlace);
+}
+void* CCodec_GifModule::Start(void* pModule)
+{
+ FXGIF_Context* p = (FXGIF_Context*)FX_Alloc(FX_BYTE, sizeof(FXGIF_Context));
+ if (p == NULL) {
+ return NULL;
+ }
+ FXSYS_memset32(p, 0, sizeof(FXGIF_Context));
+ p->m_AllocFunc = _gif_alloc_func;
+ p->m_FreeFunc = _gif_free_func;
+ p->gif_ptr = NULL;
+ p->parent_ptr = (void*)this;
+ p->child_ptr = pModule;
+ p->gif_ptr = _gif_create_decompress();
+ if (p->gif_ptr == NULL) {
+ FX_Free(p);
+ return NULL;
+ }
+ p->gif_ptr->context_ptr = (void*)p;
+ p->gif_ptr->err_ptr = m_szLastError;
+ p->gif_ptr->_gif_error_fn = _gif_error_data;
+ p->gif_ptr->_gif_ask_buf_for_pal_fn = _gif_ask_buf_for_pal;
+ p->gif_ptr->_gif_record_current_position_fn = _gif_record_current_position;
+ p->gif_ptr->_gif_get_row_fn = _gif_read_scanline;
+ p->gif_ptr->_gif_get_record_position_fn = _gif_get_record_position;
+ return p;
+}
+void CCodec_GifModule::Finish(void* pContext)
+{
+ FXGIF_Context* p = (FXGIF_Context*)pContext;
+ if(p != NULL) {
+ _gif_destroy_decompress(&p->gif_ptr);
+ p->m_FreeFunc(p);
+ }
+}
+FX_INT32 CCodec_GifModule::ReadHeader(void* pContext, int* width, int* height,
+ int* pal_num, void** pal_pp, int* bg_index, CFX_DIBAttribute* pAttribute)
+{
+ FXGIF_Context* p = (FXGIF_Context*)pContext;
+ if(setjmp(p->gif_ptr->jmpbuf)) {
+ return 0;
+ }
+ FX_INT32 ret = _gif_read_header(p->gif_ptr);
+ if (ret != 1) {
+ return ret;
+ }
+ if (pAttribute) {
+ }
+ *width = p->gif_ptr->width;
+ *height = p->gif_ptr->height;
+ *pal_num = p->gif_ptr->global_pal_num;
+ *pal_pp = p->gif_ptr->global_pal_ptr;
+ *bg_index = p->gif_ptr->bc_index;
+ return 1;
+}
+FX_INT32 CCodec_GifModule::LoadFrameInfo(void* pContext, int* frame_num)
+{
+ FXGIF_Context* p = (FXGIF_Context*)pContext;
+ if(setjmp(p->gif_ptr->jmpbuf)) {
+ return 0;
+ }
+ FX_INT32 ret = _gif_get_frame(p->gif_ptr);
+ if (ret != 1) {
+ return ret;
+ }
+ *frame_num = _gif_get_frame_num(p->gif_ptr);
+ return 1;
+}
+FX_INT32 CCodec_GifModule::LoadFrame(void* pContext, int frame_num, CFX_DIBAttribute* pAttribute)
+{
+ FXGIF_Context* p = (FXGIF_Context*)pContext;
+ if(setjmp(p->gif_ptr->jmpbuf)) {
+ return 0;
+ }
+ FX_INT32 ret = _gif_load_frame(p->gif_ptr, frame_num);
+ if (ret == 1) {
+ if (pAttribute) {
+ pAttribute->m_nGifLeft = p->gif_ptr->img_ptr_arr_ptr->GetAt(frame_num)->image_info_ptr->left;
+ pAttribute->m_nGifTop = p->gif_ptr->img_ptr_arr_ptr->GetAt(frame_num)->image_info_ptr->top;
+ pAttribute->m_fAspectRatio = p->gif_ptr->pixel_aspect;
+ if (p->gif_ptr->cmt_data_ptr) {
+ FX_LPCBYTE buf = (FX_LPCBYTE)p->gif_ptr->cmt_data_ptr->GetBuffer(0);
+ FX_DWORD len = p->gif_ptr->cmt_data_ptr->GetLength();
+ if (len > 21) {
+ FX_BYTE size = *buf++;
+ if (size) {
+ pAttribute->m_strAuthor = CFX_ByteString(buf, size);
+ } else {
+ pAttribute->m_strAuthor.Empty();
+ }
+ buf += size;
+ size = *buf++;
+ if (size == 20) {
+ FXSYS_memcpy32(pAttribute->m_strTime, buf, size);
+ }
+ }
+ }
+ }
+ }
+ return ret;
+}
+FX_DWORD CCodec_GifModule::GetAvailInput(void* pContext, FX_LPBYTE* avial_buf_ptr)
+{
+ FXGIF_Context* p = (FXGIF_Context*)pContext;
+ return _gif_get_avail_input(p->gif_ptr, avial_buf_ptr);
+}
+void CCodec_GifModule::Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size)
+{
+ FXGIF_Context* p = (FXGIF_Context*)pContext;
+ _gif_input_buffer(p->gif_ptr, (FX_LPBYTE)src_buf, src_size);
+}
diff --git a/core/src/fxcodec/codec/fx_codec_jpeg.cpp b/core/src/fxcodec/codec/fx_codec_jpeg.cpp
index 489f099..95770ea 100644
--- a/core/src/fxcodec/codec/fx_codec_jpeg.cpp
+++ b/core/src/fxcodec/codec/fx_codec_jpeg.cpp
@@ -73,6 +73,68 @@
#define JPEG_MARKER_AUTHORTIME (JPEG_APP0 + 3)
#define JPEG_MARKER_MAXSIZE 0xFFFF
#define JPEG_OVERHEAD_LEN 14
+static FX_BOOL _JpegIsIccMarker(jpeg_saved_marker_ptr marker)
+{
+ if (marker->marker == JPEG_MARKER_ICC &&
+ marker->data_length >= JPEG_OVERHEAD_LEN &&
+ (FXSYS_memcmp32(marker->data, "\x49\x43\x43\x5f\x50\x52\x4f\x46\x49\x4c\x45\x00", 12) == 0)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+static FX_BOOL _JpegLoadIccProfile(j_decompress_ptr cinfo, FX_LPBYTE* icc_buf_ptr, FX_DWORD* icc_length)
+{
+ if(icc_buf_ptr == NULL || icc_length == NULL) {
+ return FALSE;
+ }
+ *icc_buf_ptr = NULL;
+ *icc_length = 0;
+ FX_LPBYTE icc_data_ptr = NULL;
+ FX_DWORD icc_data_len = 0;
+ FX_BYTE count_icc_marker = 0;
+ FX_BYTE num_icc_marker = 0;
+ jpeg_saved_marker_ptr marker_list[256] = {NULL};
+ for (jpeg_saved_marker_ptr cur_marker = cinfo->marker_list;
+ cur_marker != NULL;
+ cur_marker = cur_marker->next) {
+ if(_JpegIsIccMarker(cur_marker)) {
+ if(count_icc_marker == 0) {
+ num_icc_marker = cur_marker->data[13];
+ } else if(num_icc_marker != cur_marker->data[13]) {
+ return FALSE;
+ }
+ int sn = cur_marker->data[12] - 1;
+ if(sn < 0 || sn >= num_icc_marker) {
+ return FALSE;
+ }
+ if(marker_list[sn] == NULL) {
+ marker_list[sn] = cur_marker;
+ } else {
+ return FALSE;
+ }
+ count_icc_marker ++;
+ icc_data_len += (cur_marker->data_length - JPEG_OVERHEAD_LEN);
+ }
+ }
+ if(count_icc_marker != num_icc_marker) {
+ return FALSE;
+ }
+ if(num_icc_marker == 0) {
+ return TRUE;
+ }
+ icc_data_ptr = FX_Alloc(FX_BYTE, icc_data_len);
+ if(icc_buf_ptr == NULL) {
+ return FALSE;
+ }
+ *icc_buf_ptr = icc_data_ptr;
+ *icc_length = icc_data_len;
+ for (int idx = 0; idx < num_icc_marker; idx++) {
+ icc_data_len = marker_list[idx]->data_length - JPEG_OVERHEAD_LEN;
+ FXSYS_memcpy32(icc_data_ptr, marker_list[idx]->data + JPEG_OVERHEAD_LEN, icc_data_len);
+ icc_data_ptr += icc_data_len;
+ }
+ return TRUE;
+}
static FX_BOOL _JpegEmbedIccProfile(j_compress_ptr cinfo, FX_LPCBYTE icc_buf_ptr, FX_DWORD icc_length)
{
if(icc_buf_ptr == NULL || icc_length == 0) {
@@ -207,6 +269,17 @@
}
dest_size = dest_buf_length - (FX_STRSIZE)dest.free_in_buffer;
}
+static void _JpegLoadAttribute(struct jpeg_decompress_struct* pInfo, CFX_DIBAttribute* pAttribute)
+{
+ if (pInfo == NULL || pAttribute == NULL) {
+ return;
+ }
+ if (pAttribute) {
+ pAttribute->m_nXDPI = pInfo->X_density;
+ pAttribute->m_nYDPI = pInfo->Y_density;
+ pAttribute->m_wDPIUnit = pInfo->density_unit;
+ }
+}
static FX_BOOL _JpegLoadInfo(FX_LPCBYTE src_buf, FX_DWORD src_size, int& width, int& height,
int& num_components, int& bits_per_components, FX_BOOL& color_transform,
FX_LPBYTE* icc_buf_ptr, FX_DWORD* icc_length)
@@ -613,10 +686,10 @@
p->m_SrcMgr.next_input_byte = src_buf;
p->m_SrcMgr.bytes_in_buffer = src_size;
}
-int CCodec_JpegModule::ReadHeader(void* pContext, int* width, int* height, int* nComps)
+int CCodec_JpegModule::ReadHeader(void* pContext, int* width, int* height, int* nComps, CFX_DIBAttribute* pAttribute)
{
if (m_pExtProvider) {
- return m_pExtProvider->ReadHeader(pContext, width, height, nComps);
+ return m_pExtProvider->ReadHeader(pContext, width, height, nComps, pAttribute);
}
FXJPEG_Context* p = (FXJPEG_Context*)pContext;
if (setjmp(p->m_JumpMark) == -1) {
@@ -632,6 +705,7 @@
*width = p->m_Info.image_width;
*height = p->m_Info.image_height;
*nComps = p->m_Info.num_components;
+ _JpegLoadAttribute(&p->m_Info, pAttribute);
return 0;
}
FX_BOOL CCodec_JpegModule::StartScanline(void* pContext, int down_scale)
diff --git a/core/src/fxcodec/codec/fx_codec_png.cpp b/core/src/fxcodec/codec/fx_codec_png.cpp
new file mode 100644
index 0000000..0ddae7a
--- /dev/null
+++ b/core/src/fxcodec/codec/fx_codec_png.cpp
@@ -0,0 +1,245 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../../include/fxcodec/fx_codec.h"
+#include "../../../include/fxge/fx_dib.h"
+#include "codec_int.h"
+extern "C" {
+#undef FAR
+#include "../fx_lpng/include/fx_png.h"
+}
+static void _png_error_data(png_structp png_ptr, png_const_charp error_msg)
+{
+ if(png_get_error_ptr(png_ptr)) {
+ FXSYS_strncpy((char*)png_get_error_ptr(png_ptr), error_msg, PNG_ERROR_SIZE - 1);
+ }
+ longjmp(png_jmpbuf(png_ptr), 1);
+}
+static void _png_warning_data(png_structp png_ptr, png_const_charp error_msg)
+{
+}
+static void _png_load_bmp_attribute(png_structp png_ptr, png_infop info_ptr, CFX_DIBAttribute* pAttribute)
+{
+ if (pAttribute) {
+#if defined(PNG_pHYs_SUPPORTED)
+ pAttribute->m_nXDPI = png_get_x_pixels_per_meter(png_ptr, info_ptr);
+ pAttribute->m_nYDPI = png_get_y_pixels_per_meter(png_ptr, info_ptr);
+ png_uint_32 res_x, res_y;
+ int unit_type;
+ png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y, &unit_type);
+ switch (unit_type) {
+ case PNG_RESOLUTION_METER:
+ pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_METER;
+ break;
+ default:
+ pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_NONE;
+ }
+#endif
+#if defined(PNG_iCCP_SUPPORTED)
+ png_charp icc_name;
+ png_bytep icc_profile;
+ png_uint_32 icc_proflen;
+ int compress_type;
+ png_get_iCCP(png_ptr, info_ptr, &icc_name, &compress_type, &icc_profile, &icc_proflen);
+#endif
+ int bTime = 0;
+#if defined(PNG_tIME_SUPPORTED)
+ png_timep t = NULL;
+ png_get_tIME(png_ptr, info_ptr, &t);
+ if (t) {
+ FXSYS_memset32(pAttribute->m_strTime, 0, 20);
+ FXSYS_sprintf((FX_LPSTR)pAttribute->m_strTime, "%4d:%2d:%2d %2d:%2d:%2d", t->year, t->month, t->day, t->hour, t->minute, t->second);
+ bTime = 1;
+ }
+#endif
+#if defined(PNG_TEXT_SUPPORTED)
+ int i;
+ FX_DWORD len;
+ FX_LPCSTR buf;
+ int num_text;
+ png_textp text = NULL;
+ png_get_text(png_ptr, info_ptr, &text, &num_text);
+ for (i = 0; i < num_text; i++) {
+ len = (FX_DWORD)FXSYS_strlen(text[i].key);
+ buf = "Time";
+ if (!FXSYS_memcmp32(buf, text[i].key, FX_MIN(len, FXSYS_strlen(buf)))) {
+ if (!bTime) {
+ FXSYS_memset32(pAttribute->m_strTime, 0, 20);
+ FXSYS_memcpy32(pAttribute->m_strTime, text[i].text, text[i].text_length);
+ }
+ } else {
+ buf = "Author";
+ if (!FXSYS_memcmp32(buf, text[i].key, FX_MIN(len, FXSYS_strlen(buf)))) {
+ pAttribute->m_strAuthor.Empty();
+ pAttribute->m_strAuthor.Load((FX_LPBYTE)text[i].text, (FX_STRSIZE)text[i].text_length);
+ }
+ }
+ }
+#endif
+ }
+}
+struct FXPNG_Context {
+ png_structp png_ptr;
+ png_infop info_ptr;
+ void* parent_ptr;
+ void* child_ptr;
+
+ void* (*m_AllocFunc)(unsigned int);
+ void (*m_FreeFunc)(void*);
+};
+extern "C" {
+ static void* _png_alloc_func(unsigned int size)
+ {
+ return FX_Alloc(char, size);
+ }
+ static void _png_free_func(void* p)
+ {
+ if(p != NULL) {
+ FX_Free(p);
+ }
+ }
+};
+static void _png_get_header_func(png_structp png_ptr, png_infop info_ptr)
+{
+ FXPNG_Context* p = (FXPNG_Context*)png_get_progressive_ptr(png_ptr);
+ if(p == NULL) {
+ return;
+ }
+ CCodec_PngModule* pModule = (CCodec_PngModule*)p->parent_ptr;
+ if(pModule == NULL) {
+ return;
+ }
+ png_uint_32 width = 0, height = 0;
+ int bpc = 0, color_type = 0 , color_type1 = 0, pass = 0;
+ double gamma = 1.0;
+ png_get_IHDR(png_ptr, info_ptr, &width, &height, &bpc, &color_type, NULL, NULL, NULL);
+ color_type1 = color_type;
+ if(bpc > 8) {
+ png_set_strip_16(png_ptr);
+ } else if(bpc < 8) {
+ png_set_expand_gray_1_2_4_to_8(png_ptr);
+ }
+ bpc = 8;
+ if(color_type == PNG_COLOR_TYPE_PALETTE) {
+ png_set_palette_to_rgb(png_ptr);
+ }
+ pass = png_set_interlace_handling(png_ptr);
+ if(!pModule->ReadHeaderCallback(p->child_ptr, width, height, bpc, pass, &color_type, &gamma)) {
+ png_error(p->png_ptr, "Read Header Callback Error");
+ }
+ int intent;
+ if (png_get_sRGB(png_ptr, info_ptr, &intent)) {
+ png_set_gamma(png_ptr, gamma, 0.45455);
+ } else {
+ double image_gamma;
+ if(png_get_gAMA(png_ptr, info_ptr, &image_gamma)) {
+ png_set_gamma(png_ptr, gamma, image_gamma);
+ } else {
+ png_set_gamma(png_ptr, gamma, 0.45455);
+ }
+ }
+ switch(color_type) {
+ case PNG_COLOR_TYPE_GRAY:
+ case PNG_COLOR_TYPE_GRAY_ALPHA: {
+ if(color_type1 & PNG_COLOR_MASK_COLOR) {
+ png_set_rgb_to_gray(png_ptr, 1, 0.299, 0.587);
+ }
+ }
+ break;
+ case PNG_COLOR_TYPE_PALETTE:
+ if(color_type1 != PNG_COLOR_TYPE_PALETTE) {
+ png_error(p->png_ptr, "Not Support Output Palette Now");
+ }
+ case PNG_COLOR_TYPE_RGB:
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ if(!(color_type1 & PNG_COLOR_MASK_COLOR)) {
+ png_set_gray_to_rgb(png_ptr);
+ }
+ png_set_bgr(png_ptr);
+ break;
+ }
+ if(!(color_type & PNG_COLOR_MASK_ALPHA)) {
+ png_set_strip_alpha(png_ptr);
+ }
+ if(color_type & PNG_COLOR_MASK_ALPHA && !(color_type1 & PNG_COLOR_MASK_ALPHA)) {
+ png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
+ }
+ png_read_update_info(png_ptr, info_ptr);
+}
+static void _png_get_end_func(png_structp png_ptr, png_infop info_ptr) {}
+static void _png_get_row_func(png_structp png_ptr, png_bytep new_row, png_uint_32 row_num, int pass)
+{
+ FXPNG_Context* p = (FXPNG_Context*)png_get_progressive_ptr(png_ptr);
+ if(p == NULL) {
+ return;
+ }
+ CCodec_PngModule* pModule = (CCodec_PngModule*)p->parent_ptr;
+ FX_LPBYTE src_buf = NULL;
+ if(!pModule->AskScanlineBufCallback(p->child_ptr, row_num, src_buf)) {
+ png_error(png_ptr, "Ask Scanline buffer Callback Error");
+ }
+ if(src_buf != NULL) {
+ png_progressive_combine_row(png_ptr, src_buf, new_row);
+ }
+ pModule->FillScanlineBufCompletedCallback(p->child_ptr, pass, row_num);
+}
+void* CCodec_PngModule::Start(void* pModule)
+{
+ FXPNG_Context* p = (FXPNG_Context*)FX_Alloc(FX_BYTE, sizeof(FXPNG_Context));
+ if(p == NULL) {
+ return NULL;
+ }
+ p->m_AllocFunc = _png_alloc_func;
+ p->m_FreeFunc = _png_free_func;
+ p->png_ptr = NULL;
+ p->info_ptr = NULL;
+ p->parent_ptr = (void*)this;
+ p->child_ptr = pModule;
+ p->png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (p->png_ptr == NULL) {
+ FX_Free(p);
+ return NULL;
+ }
+ p->info_ptr = png_create_info_struct(p->png_ptr);
+ if (p->info_ptr == NULL) {
+ png_destroy_read_struct(&(p->png_ptr), (png_infopp)NULL, (png_infopp)NULL);
+ FX_Free(p);
+ return NULL;
+ }
+ if (setjmp(png_jmpbuf(p->png_ptr))) {
+ if(p != NULL) {
+ png_destroy_read_struct(&(p->png_ptr), &(p->info_ptr), (png_infopp)NULL);
+ FX_Free(p);
+ }
+ return NULL;
+ }
+ png_set_progressive_read_fn(p->png_ptr, p,
+ _png_get_header_func,
+ _png_get_row_func,
+ _png_get_end_func);
+ png_set_error_fn(p->png_ptr, m_szLastError, (png_error_ptr)_png_error_data, (png_error_ptr)_png_warning_data);
+ return p;
+}
+void CCodec_PngModule::Finish(void* pContext)
+{
+ FXPNG_Context* p = (FXPNG_Context*)pContext;
+ if(p != NULL) {
+ png_destroy_read_struct(&(p->png_ptr), &(p->info_ptr), (png_infopp)NULL);
+ p->m_FreeFunc(p);
+ }
+}
+FX_BOOL CCodec_PngModule::Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_DIBAttribute* pAttribute)
+{
+ FXPNG_Context* p = (FXPNG_Context*)pContext;
+ if(setjmp(png_jmpbuf(p->png_ptr))) {
+ if (pAttribute && 0 == FXSYS_strcmp(m_szLastError, "Read Header Callback Error")) {
+ _png_load_bmp_attribute(p->png_ptr, p->info_ptr, pAttribute);
+ }
+ return FALSE;
+ }
+ png_process_data(p->png_ptr, p->info_ptr, (FX_LPBYTE)src_buf, src_size);
+ return TRUE;
+}
diff --git a/core/src/fxcodec/codec/fx_codec_progress.cpp b/core/src/fxcodec/codec/fx_codec_progress.cpp
new file mode 100644
index 0000000..542ac68
--- /dev/null
+++ b/core/src/fxcodec/codec/fx_codec_progress.cpp
@@ -0,0 +1,2263 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../../include/fxge/fx_dib.h"
+#include "../../../include/fxcodec/fx_codec.h"
+#include "fx_codec_progress.h"
+void CFXCODEC_WeightTable::Calc(int dest_len, int dest_min, int dest_max, int src_len, int src_min, int src_max, FX_BOOL bInterpol)
+{
+ if (m_pWeightTables) {
+ FX_Free(m_pWeightTables);
+ }
+ double scale, base;
+ scale = FXSYS_Div((FX_FLOAT)(src_len), (FX_FLOAT)(dest_len));
+ if (dest_len < 0) {
+ base = (FX_FLOAT)(src_len);
+ } else {
+ base = 0.0f;
+ }
+ m_ItemSize = (int)(sizeof(int) * 2 + sizeof(int) * (FXSYS_ceil(FXSYS_fabs((FX_FLOAT)scale)) + 1));
+ m_DestMin = dest_min;
+ m_pWeightTables = FX_Alloc(FX_BYTE, (dest_max - dest_min) * m_ItemSize + 4);
+ if(m_pWeightTables == NULL) {
+ return;
+ }
+ if (FXSYS_fabs((FX_FLOAT)scale) < 1.0f) {
+ for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel ++) {
+ PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel);
+ double src_pos = dest_pixel * scale + scale / 2 + base;
+ if (bInterpol) {
+ pixel_weights.m_SrcStart = (int)FXSYS_floor((FX_FLOAT)src_pos - 1.0f / 2);
+ pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos + 1.0f / 2);
+ if (pixel_weights.m_SrcStart < src_min) {
+ pixel_weights.m_SrcStart = src_min;
+ }
+ if (pixel_weights.m_SrcEnd >= src_max) {
+ pixel_weights.m_SrcEnd = src_max - 1;
+ }
+ if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) {
+ pixel_weights.m_Weights[0] = 65536;
+ } else {
+ pixel_weights.m_Weights[1] = FXSYS_round((FX_FLOAT)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 65536);
+ pixel_weights.m_Weights[0] = 65536 - pixel_weights.m_Weights[1];
+ }
+ } else {
+ pixel_weights.m_SrcStart = pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos);
+ pixel_weights.m_Weights[0] = 65536;
+ }
+ }
+ return;
+ }
+ for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel ++) {
+ PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel);
+ double src_start = dest_pixel * scale + base;
+ double src_end = src_start + scale;
+ int start_i, end_i;
+ if (src_start < src_end) {
+ start_i = (int)FXSYS_floor((FX_FLOAT)src_start);
+ end_i = (int)FXSYS_ceil((FX_FLOAT)src_end);
+ } else {
+ start_i = (int)FXSYS_floor((FX_FLOAT)src_end);
+ end_i = (int)FXSYS_ceil((FX_FLOAT)src_start);
+ }
+ if (start_i < src_min) {
+ start_i = src_min;
+ }
+ if (end_i >= src_max) {
+ end_i = src_max - 1;
+ }
+ if (start_i > end_i) {
+ pixel_weights.m_SrcStart = start_i;
+ pixel_weights.m_SrcEnd = start_i;
+ continue;
+ }
+ pixel_weights.m_SrcStart = start_i;
+ pixel_weights.m_SrcEnd = end_i;
+ for (int j = start_i; j <= end_i; j ++) {
+ double dest_start = FXSYS_Div((FX_FLOAT)(j) - base, scale);
+ double dest_end = FXSYS_Div((FX_FLOAT)(j + 1) - base, scale);
+ if (dest_start > dest_end) {
+ double temp = dest_start;
+ dest_start = dest_end;
+ dest_end = temp;
+ }
+ double area_start = dest_start > (FX_FLOAT)(dest_pixel) ? dest_start : (FX_FLOAT)(dest_pixel);
+ double area_end = dest_end > (FX_FLOAT)(dest_pixel + 1) ? (FX_FLOAT)(dest_pixel + 1) : dest_end;
+ double weight = area_start >= area_end ? 0.0f : area_end - area_start;
+ if (weight == 0 && j == end_i) {
+ pixel_weights.m_SrcEnd --;
+ break;
+ }
+ pixel_weights.m_Weights[j - start_i] = FXSYS_round((FX_FLOAT)(weight * 65536));
+ }
+ }
+}
+void CFXCODEC_HorzTable::Calc(int dest_len, int src_len, FX_BOOL bInterpol)
+{
+ if (m_pWeightTables) {
+ FX_Free(m_pWeightTables);
+ }
+ double scale = (double)dest_len / (double)src_len;
+ m_ItemSize = sizeof(int) * 4;
+ int size = dest_len * m_ItemSize + 4;
+ m_pWeightTables = FX_Alloc(FX_BYTE, size);
+ if(m_pWeightTables == NULL) {
+ return;
+ }
+ FXSYS_memset32(m_pWeightTables, 0, size);
+ if(scale > 1) {
+ int pre_des_col = 0;
+ for (int src_col = 0; src_col < src_len; src_col++) {
+ double des_col_f = src_col * scale;
+ int des_col = FXSYS_round((FX_FLOAT)des_col_f);
+ PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_col * m_ItemSize);
+ pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col;
+ pWeight->m_Weights[0] = 65536;
+ pWeight->m_Weights[1] = 0;
+ if(src_col == src_len - 1 && des_col < dest_len - 1) {
+ for (int des_col_index = pre_des_col + 1; des_col_index < dest_len; des_col_index++) {
+ pWeight = (PixelWeight*)(m_pWeightTables + des_col_index * m_ItemSize);
+ pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col;
+ pWeight->m_Weights[0] = 65536;
+ pWeight->m_Weights[1] = 0;
+ }
+ return;
+ }
+ int des_col_len = des_col - pre_des_col;
+ for (int des_col_index = pre_des_col + 1; des_col_index < des_col; des_col_index++) {
+ pWeight = (PixelWeight*)(m_pWeightTables + des_col_index * m_ItemSize);
+ pWeight->m_SrcStart = src_col - 1;
+ pWeight->m_SrcEnd = src_col;
+ pWeight->m_Weights[0] = bInterpol ? FXSYS_round((FX_FLOAT)
+ (
+ ((FX_FLOAT)des_col - (FX_FLOAT)des_col_index)
+ / (FX_FLOAT)des_col_len * 65536
+ )
+ ) : 65536;
+ pWeight->m_Weights[1] = 65536 - pWeight->m_Weights[0];
+ }
+ pre_des_col = des_col;
+ }
+ return;
+ }
+ for (int des_col = 0; des_col < dest_len; des_col++) {
+ double src_col_f = des_col / scale;
+ int src_col = FXSYS_round((FX_FLOAT)src_col_f);
+ PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_col * m_ItemSize);
+ pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col;
+ pWeight->m_Weights[0] = 65536;
+ pWeight->m_Weights[1] = 0;
+ }
+}
+void CFXCODEC_VertTable::Calc(int dest_len, int src_len)
+{
+ if (m_pWeightTables) {
+ FX_Free(m_pWeightTables);
+ }
+ double scale = (double)dest_len / (double)src_len;
+ m_ItemSize = sizeof(int) * 4;
+ int size = dest_len * m_ItemSize + 4;
+ m_pWeightTables = FX_Alloc(FX_BYTE, size);
+ if(m_pWeightTables == NULL) {
+ return;
+ }
+ FXSYS_memset32(m_pWeightTables, 0, size);
+ if(scale > 1) {
+ double step = 0.0;
+ int src_row = 0;
+ while ( step < (double)dest_len ) {
+ int start_step = (int)step;
+ step = scale * (++src_row);
+ int end_step = (int)step;
+ if(end_step >= dest_len) {
+ end_step = dest_len;
+ for (int des_row = start_step; des_row < end_step; des_row++) {
+ PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_row * m_ItemSize);
+ pWeight->m_SrcStart = start_step;
+ pWeight->m_SrcEnd = start_step;
+ pWeight->m_Weights[0] = 65536;
+ pWeight->m_Weights[1] = 0;
+ }
+ return;
+ }
+ int length = end_step - start_step;
+ {
+ PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + start_step * m_ItemSize);
+ pWeight->m_SrcStart = start_step;
+ pWeight->m_SrcEnd = start_step;
+ pWeight->m_Weights[0] = 65536;
+ pWeight->m_Weights[1] = 0;
+ }
+ for (int des_row = start_step + 1; des_row < end_step; des_row++) {
+ PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_row * m_ItemSize);
+ pWeight->m_SrcStart = start_step;
+ pWeight->m_SrcEnd = end_step;
+ pWeight->m_Weights[0] = FXSYS_round((FX_FLOAT)(end_step - des_row) / (FX_FLOAT)length * 65536);
+ pWeight->m_Weights[1] = 65536 - pWeight->m_Weights[0];
+ }
+ }
+ } else {
+ for (int des_row = 0; des_row < dest_len; des_row++) {
+ PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_row * m_ItemSize);
+ pWeight->m_SrcStart = des_row;
+ pWeight->m_SrcEnd = des_row;
+ pWeight->m_Weights[0] = 65536;
+ pWeight->m_Weights[1] = 0;
+ }
+ }
+}
+CCodec_ProgressiveDecoder::CCodec_ProgressiveDecoder(CCodec_ModuleMgr* pCodecMgr)
+{
+ m_pFile = NULL;
+ m_pJpegContext = NULL;
+ m_pPngContext = NULL;
+ m_pGifContext = NULL;
+ m_pBmpContext = NULL;
+ m_pTiffContext = NULL;
+ m_pCodecMgr = NULL;
+ m_pSrcBuf = NULL;
+ m_pDecodeBuf = NULL;
+ m_pDeviceBitmap = NULL;
+ m_pSrcPalette = NULL;
+ m_pCodecMgr = pCodecMgr;
+ m_offSet = 0;
+ m_SrcSize = 0;
+ m_ScanlineSize = 0;
+ m_SrcWidth = m_SrcHeight = 0;
+ m_SrcComponents = 0;
+ m_SrcBPC = 0;
+ m_SrcPassNumber = 0;
+ m_clipBox = FX_RECT(0, 0, 0, 0);
+ m_imagType = FXCODEC_IMAGE_UNKNOWN;
+ m_status = FXCODEC_STATUS_DECODE_FINISH;
+ m_TransMethod = -1;
+ m_SrcRow = 0;
+ m_SrcFormat = FXCodec_Invalid;
+ m_bInterpol = TRUE;
+ m_FrameNumber = 0;
+ m_FrameCur = 0;
+ m_SrcPaletteNumber = 0;
+ m_GifPltNumber = 0;
+ m_GifBgIndex = 0;
+ m_pGifPalette = NULL;
+ m_GifTransIndex = -1;
+ m_GifFrameRect = FX_RECT(0, 0, 0, 0);
+ m_BmpIsTopBottom = FALSE;
+}
+CCodec_ProgressiveDecoder::~CCodec_ProgressiveDecoder()
+{
+ m_pFile = NULL;
+ if(m_pJpegContext != NULL) {
+ m_pCodecMgr->GetJpegModule()->Finish(m_pJpegContext);
+ }
+ if(m_pPngContext != NULL) {
+ m_pCodecMgr->GetPngModule()->Finish(m_pPngContext);
+ }
+ if(m_pGifContext != NULL) {
+ m_pCodecMgr->GetGifModule()->Finish(m_pGifContext);
+ }
+ if(m_pBmpContext != NULL) {
+ m_pCodecMgr->GetBmpModule()->Finish(m_pBmpContext);
+ }
+ if(m_pTiffContext != NULL) {
+ m_pCodecMgr->GetTiffModule()->DestroyDecoder(m_pTiffContext);
+ }
+ if(m_pSrcBuf != NULL) {
+ FX_Free(m_pSrcBuf);
+ }
+ if(m_pDecodeBuf != NULL) {
+ FX_Free(m_pDecodeBuf);
+ }
+ if(m_pSrcPalette != NULL) {
+ FX_Free(m_pSrcPalette);
+ }
+}
+FX_BOOL CCodec_ProgressiveDecoder::JpegReadMoreData(ICodec_JpegModule* pJpegModule, FXCODEC_STATUS& err_status)
+{
+ FX_DWORD dwSize = (FX_DWORD)m_pFile->GetSize();
+ if (dwSize <= m_offSet) {
+ return FALSE;
+ }
+ dwSize = dwSize - m_offSet;
+ FX_DWORD dwAvail = pJpegModule->GetAvailInput(m_pJpegContext, NULL);
+ if (dwAvail == m_SrcSize) {
+ if (dwSize > FXCODEC_BLOCK_SIZE) {
+ dwSize = FXCODEC_BLOCK_SIZE;
+ }
+ m_SrcSize = (dwSize + dwAvail + FXCODEC_BLOCK_SIZE - 1) / FXCODEC_BLOCK_SIZE * FXCODEC_BLOCK_SIZE;
+ m_pSrcBuf = FX_Realloc(FX_BYTE, m_pSrcBuf, m_SrcSize);
+ if (!m_pSrcBuf) {
+ err_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ } else {
+ FX_DWORD dwConsume = m_SrcSize - dwAvail;
+ if (dwAvail) {
+ FXSYS_memcpy32(m_pSrcBuf, m_pSrcBuf + dwConsume, dwAvail);
+ }
+ if (dwSize > dwConsume) {
+ dwSize = dwConsume;
+ }
+ }
+ if (!m_pFile->ReadBlock(m_pSrcBuf + dwAvail, m_offSet, dwSize)) {
+ err_status = FXCODEC_STATUS_ERR_READ;
+ return FALSE;
+ }
+ m_offSet += dwSize;
+ pJpegModule->Input(m_pJpegContext, m_pSrcBuf, dwSize + dwAvail);
+ return TRUE;
+}
+FX_BOOL CCodec_ProgressiveDecoder::PngReadHeaderFunc(void* pModule, int width, int height, int bpc, int pass, int* color_type, double* gamma)
+{
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ if(pCodec->m_pDeviceBitmap == NULL) {
+ pCodec->m_SrcWidth = width;
+ pCodec->m_SrcHeight = height;
+ pCodec->m_SrcBPC = bpc;
+ pCodec->m_SrcPassNumber = pass;
+ pCodec->m_SrcComponents = *color_type == 0 ? 1 :
+ *color_type == 2 ? 3 :
+ *color_type == 3 ? 4 :
+ *color_type == 4 ? 2 :
+ *color_type == 6 ? 4 : 0;
+ pCodec->m_clipBox = FX_RECT(0, 0, width, height);
+ return FALSE;
+ }
+ FXDIB_Format format = pCodec->m_pDeviceBitmap->GetFormat();
+ switch(format) {
+ case FXDIB_1bppMask:
+ case FXDIB_1bppRgb:
+ ASSERT(FALSE);
+ return FALSE;
+ case FXDIB_8bppMask:
+ case FXDIB_8bppRgb:
+ *color_type = 0;
+ break;
+ case FXDIB_Rgb:
+ *color_type = 2;
+ break;
+ case FXDIB_Rgb32:
+ case FXDIB_Argb:
+ *color_type = 6;
+ break;
+ default:
+ ASSERT(FALSE);
+ return FALSE;
+ }
+ *gamma = FXCODEC_PNG_GAMMA;
+ return TRUE;
+}
+FX_BOOL CCodec_ProgressiveDecoder::PngAskScanlineBufFunc(void* pModule, int line, FX_LPBYTE& src_buf)
+{
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap;
+ ASSERT(pDIBitmap != NULL);
+ if(pDIBitmap == NULL) {
+ return FALSE;
+ }
+ if(line >= pCodec->m_clipBox.top && line < pCodec->m_clipBox.bottom) {
+ double scale_y = (double)pCodec->m_sizeY / (double)pCodec->m_clipBox.Height();
+ FX_INT32 row = (FX_INT32)((line - pCodec->m_clipBox.top) * scale_y) + pCodec->m_startY;
+ FX_LPBYTE src_scan = (FX_LPBYTE)pDIBitmap->GetScanline(row);
+ FX_LPBYTE des_scan = pCodec->m_pDecodeBuf;
+ src_buf = pCodec->m_pDecodeBuf;
+ FX_INT32 src_Bpp = pDIBitmap->GetBPP() >> 3;
+ FX_INT32 des_Bpp = (pCodec->m_SrcFormat & 0xff) >> 3;
+ FX_INT32 src_left = pCodec->m_startX;
+ FX_INT32 des_left = pCodec->m_clipBox.left;
+ src_scan += src_left * src_Bpp;
+ des_scan += des_left * des_Bpp;
+ for (FX_INT32 src_col = 0; src_col < pCodec->m_sizeX; src_col++) {
+ PixelWeight* pPixelWeights = pCodec->m_WeightHorzOO.GetPixelWeight(src_col);
+ if(pPixelWeights->m_SrcStart != pPixelWeights->m_SrcEnd) {
+ continue;
+ }
+ switch(pDIBitmap->GetFormat()) {
+ case FXDIB_1bppMask:
+ case FXDIB_1bppRgb:
+ ASSERT(FALSE);
+ return FALSE;
+ case FXDIB_8bppMask:
+ case FXDIB_8bppRgb: {
+ if(pDIBitmap->GetPalette() != NULL) {
+ return FALSE;
+ }
+ FX_DWORD des_g = 0;
+ des_g += pPixelWeights->m_Weights[0] * src_scan[src_col];
+ des_scan[pPixelWeights->m_SrcStart] = (FX_BYTE)(des_g >> 16);
+ }
+ break;
+ case FXDIB_Rgb:
+ case FXDIB_Rgb32: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ FX_LPCBYTE p = src_scan + src_col * src_Bpp;
+ des_b += pPixelWeights->m_Weights[0] * (*p++);
+ des_g += pPixelWeights->m_Weights[0] * (*p++);
+ des_r += pPixelWeights->m_Weights[0] * (*p);
+ FX_LPBYTE pDes = &des_scan[pPixelWeights->m_SrcStart * des_Bpp];
+ *pDes++ = (FX_BYTE)((des_b) >> 16);
+ *pDes++ = (FX_BYTE)((des_g) >> 16);
+ *pDes = (FX_BYTE)((des_r) >> 16);
+ }
+ break;
+ case FXDIB_Argb: {
+ FX_DWORD des_r = 0, des_g = 0, des_b = 0;
+ FX_LPCBYTE p = src_scan + src_col * src_Bpp;
+ des_b += pPixelWeights->m_Weights[0] * (*p++);
+ des_g += pPixelWeights->m_Weights[0] * (*p++);
+ des_r += pPixelWeights->m_Weights[0] * (*p++);
+ FX_LPBYTE pDes = &des_scan[pPixelWeights->m_SrcStart * des_Bpp];
+ *pDes++ = (FX_BYTE)((des_b) >> 16);
+ *pDes++ = (FX_BYTE)((des_g) >> 16);
+ *pDes++ = (FX_BYTE)((des_r) >> 16);
+ *pDes = *p;
+ }
+ break;
+ default:
+ return FALSE;
+ }
+ }
+ }
+ return TRUE;
+}
+void CCodec_ProgressiveDecoder::PngOneOneMapResampleHorz(CFX_DIBitmap* pDeviceBitmap, FX_INT32 des_line, FX_LPBYTE src_scan, FXCodec_Format src_format)
+{
+ FX_LPBYTE des_scan = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_line);
+ FX_INT32 src_Bpp = (m_SrcFormat & 0xff) >> 3;
+ FX_INT32 des_Bpp = pDeviceBitmap->GetBPP() >> 3;
+ FX_INT32 src_left = m_clipBox.left;
+ FX_INT32 des_left = m_startX;
+ src_scan += src_left * src_Bpp;
+ des_scan += des_left * des_Bpp;
+ for (FX_INT32 des_col = 0; des_col < m_sizeX; des_col++) {
+ PixelWeight* pPixelWeights = m_WeightHorzOO.GetPixelWeight(des_col);
+ switch(pDeviceBitmap->GetFormat()) {
+ case FXDIB_1bppMask:
+ case FXDIB_1bppRgb:
+ ASSERT(FALSE);
+ return;
+ case FXDIB_8bppMask:
+ case FXDIB_8bppRgb: {
+ if(pDeviceBitmap->GetPalette() != NULL) {
+ return;
+ }
+ FX_DWORD des_g = 0;
+ des_g += pPixelWeights->m_Weights[0] * src_scan[pPixelWeights->m_SrcStart];
+ des_g += pPixelWeights->m_Weights[1] * src_scan[pPixelWeights->m_SrcEnd];
+ *des_scan++ = (FX_BYTE)(des_g >> 16);
+ }
+ break;
+ case FXDIB_Rgb:
+ case FXDIB_Rgb32: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ FX_LPCBYTE p = src_scan;
+ p = src_scan + pPixelWeights->m_SrcStart * src_Bpp;
+ des_b += pPixelWeights->m_Weights[0] * (*p++);
+ des_g += pPixelWeights->m_Weights[0] * (*p++);
+ des_r += pPixelWeights->m_Weights[0] * (*p);
+ p = src_scan + pPixelWeights->m_SrcEnd * src_Bpp;
+ des_b += pPixelWeights->m_Weights[1] * (*p++);
+ des_g += pPixelWeights->m_Weights[1] * (*p++);
+ des_r += pPixelWeights->m_Weights[1] * (*p);
+ *des_scan++ = (FX_BYTE)((des_b) >> 16);
+ *des_scan++ = (FX_BYTE)((des_g) >> 16);
+ *des_scan++ = (FX_BYTE)((des_r) >> 16);
+ des_scan += des_Bpp - 3;
+ }
+ break;
+ case FXDIB_Argb: {
+ FX_DWORD des_a = 0, des_b = 0, des_g = 0, des_r = 0;
+ FX_LPCBYTE p = src_scan;
+ p = src_scan + pPixelWeights->m_SrcStart * src_Bpp;
+ des_b += pPixelWeights->m_Weights[0] * (*p++);
+ des_g += pPixelWeights->m_Weights[0] * (*p++);
+ des_r += pPixelWeights->m_Weights[0] * (*p++);
+ des_a += pPixelWeights->m_Weights[0] * (*p);
+ p = src_scan + pPixelWeights->m_SrcEnd * src_Bpp;
+ des_b += pPixelWeights->m_Weights[1] * (*p++);
+ des_g += pPixelWeights->m_Weights[1] * (*p++);
+ des_r += pPixelWeights->m_Weights[1] * (*p++);
+ des_a += pPixelWeights->m_Weights[1] * (*p);
+ *des_scan++ = (FX_BYTE)((des_b) >> 16);
+ *des_scan++ = (FX_BYTE)((des_g) >> 16);
+ *des_scan++ = (FX_BYTE)((des_r) >> 16);
+ *des_scan++ = (FX_BYTE)((des_a) >> 16);
+ }
+ break;
+ default:
+ return;
+ }
+ }
+}
+void CCodec_ProgressiveDecoder::PngFillScanlineBufCompletedFunc(void* pModule, int pass, int line)
+{
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap;
+ ASSERT(pDIBitmap != NULL);
+ int src_top = pCodec->m_clipBox.top;
+ int src_bottom = pCodec->m_clipBox.bottom;
+ int des_top = pCodec->m_startY;
+ int src_hei = pCodec->m_clipBox.Height();
+ int des_hei = pCodec->m_sizeY;
+ if(line >= src_top && line < src_bottom) {
+ double scale_y = (double)des_hei / (double)src_hei;
+ int src_row = line - src_top;
+ int des_row = (int)(src_row * scale_y) + des_top;
+ if(des_row >= des_top + des_hei) {
+ return;
+ }
+ pCodec->PngOneOneMapResampleHorz(pDIBitmap, des_row, pCodec->m_pDecodeBuf, pCodec->m_SrcFormat);
+ if(pCodec->m_SrcPassNumber == 1 && scale_y > 1.0) {
+ pCodec->ResampleVert(pDIBitmap, scale_y, des_row);
+ return;
+ }
+ if(pass == 6 && scale_y > 1.0) {
+ pCodec->ResampleVert(pDIBitmap, scale_y, des_row);
+ }
+ }
+}
+FX_BOOL CCodec_ProgressiveDecoder::GifReadMoreData(ICodec_GifModule* pGifModule, FXCODEC_STATUS& err_status)
+{
+ FX_DWORD dwSize = (FX_DWORD)m_pFile->GetSize();
+ if (dwSize <= m_offSet) {
+ return FALSE;
+ }
+ dwSize = dwSize - m_offSet;
+ FX_DWORD dwAvail = pGifModule->GetAvailInput(m_pGifContext, NULL);
+ if (dwAvail == m_SrcSize) {
+ if (dwSize > FXCODEC_BLOCK_SIZE) {
+ dwSize = FXCODEC_BLOCK_SIZE;
+ }
+ m_SrcSize = (dwSize + dwAvail + FXCODEC_BLOCK_SIZE - 1) / FXCODEC_BLOCK_SIZE * FXCODEC_BLOCK_SIZE;
+ m_pSrcBuf = FX_Realloc(FX_BYTE, m_pSrcBuf, m_SrcSize);
+ if (!m_pSrcBuf) {
+ err_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ } else {
+ FX_DWORD dwConsume = m_SrcSize - dwAvail;
+ if (dwAvail) {
+ FXSYS_memcpy32(m_pSrcBuf, m_pSrcBuf + dwConsume, dwAvail);
+ }
+ if (dwSize > dwConsume) {
+ dwSize = dwConsume;
+ }
+ }
+ if (!m_pFile->ReadBlock(m_pSrcBuf + dwAvail, m_offSet, dwSize)) {
+ err_status = FXCODEC_STATUS_ERR_READ;
+ return FALSE;
+ }
+ m_offSet += dwSize;
+ pGifModule->Input(m_pGifContext, m_pSrcBuf, dwSize + dwAvail);
+ return TRUE;
+}
+void CCodec_ProgressiveDecoder::GifRecordCurrentPositionCallback(void* pModule, FX_DWORD& cur_pos)
+{
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ FX_DWORD remain_size = pCodec->m_pCodecMgr->GetGifModule()->GetAvailInput(pCodec->m_pGifContext);
+ cur_pos = pCodec->m_offSet - remain_size;
+}
+FX_LPBYTE CCodec_ProgressiveDecoder::GifAskLocalPaletteBufCallback(void* pModule, FX_INT32 frame_num, FX_INT32 pal_size)
+{
+ return FX_Alloc(FX_BYTE, pal_size);
+}
+FX_BOOL CCodec_ProgressiveDecoder::GifInputRecordPositionBufCallback(void* pModule, FX_DWORD rcd_pos, const FX_RECT& img_rc,
+ FX_INT32 pal_num, void* pal_ptr,
+ FX_INT32 delay_time, FX_BOOL user_input,
+ FX_INT32 trans_index, FX_INT32 disposal_method, FX_BOOL interlace)
+{
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ pCodec->m_offSet = rcd_pos;
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR;
+ if(!pCodec->GifReadMoreData(pCodec->m_pCodecMgr->GetGifModule(), error_status)) {
+ return FALSE;
+ }
+ FX_LPBYTE pPalette = NULL;
+ if(pal_num != 0 && pal_ptr) {
+ pPalette = (FX_LPBYTE)pal_ptr;
+ } else {
+ pal_num = pCodec->m_GifPltNumber;
+ pPalette = pCodec->m_pGifPalette;
+ }
+ if(pCodec->m_pSrcPalette == NULL) {
+ pCodec->m_pSrcPalette = FX_Alloc(FX_ARGB, pal_num);
+ } else if(pal_num > pCodec->m_SrcPaletteNumber) {
+ pCodec->m_pSrcPalette = FX_Realloc(FX_ARGB, pCodec->m_pSrcPalette, pal_num);
+ }
+ if(pCodec->m_pSrcPalette == NULL) {
+ return FALSE;
+ }
+ pCodec->m_SrcPaletteNumber = pal_num;
+ for (int i = 0; i < pal_num; i++) {
+ register FX_DWORD j = i * 3;
+ pCodec->m_pSrcPalette[i] =
+ ArgbEncode(0xff, pPalette[j], pPalette[j + 1], pPalette[j + 2]);
+ }
+ pCodec->m_GifTransIndex = trans_index;
+ pCodec->m_GifFrameRect = img_rc;
+ pCodec->m_SrcPassNumber = interlace ? 4 : 1;
+ FX_INT32 pal_index = pCodec->m_GifBgIndex;
+ CFX_DIBitmap* pDevice = pCodec->m_pDeviceBitmap;
+ if (trans_index >= pal_num) {
+ trans_index = -1;
+ }
+ if (trans_index != -1) {
+ pCodec->m_pSrcPalette[trans_index] &= 0x00ffffff;
+ if (pDevice->HasAlpha()) {
+ pal_index = trans_index;
+ }
+ }
+ int startX = pCodec->m_startX;
+ int startY = pCodec->m_startY;
+ int sizeX = pCodec->m_sizeX;
+ int sizeY = pCodec->m_sizeY;
+ int Bpp = pDevice->GetBPP() / 8;
+ FX_ARGB argb = pCodec->m_pSrcPalette[pal_index];
+ for (int row = 0; row < sizeY; row ++) {
+ FX_LPBYTE pScanline = (FX_LPBYTE)pDevice->GetScanline(row + startY) + startX * Bpp;
+ switch(pCodec->m_TransMethod) {
+ case 3: {
+ FX_BYTE gray = FXRGB2GRAY(FXARGB_R(argb), FXARGB_G(argb), FXARGB_B(argb));
+ FXSYS_memset8(pScanline, gray, sizeX);
+ break;
+ }
+ case 8: {
+ for (int col = 0; col < sizeX; col ++) {
+ *pScanline++ = FXARGB_B(argb);
+ *pScanline++ = FXARGB_G(argb);
+ *pScanline++ = FXARGB_R(argb);
+ pScanline += Bpp - 3;
+ }
+ break;
+ }
+ case 12: {
+ for (int col = 0; col < sizeX; col ++) {
+ FXARGB_SETDIB(pScanline, argb);
+ pScanline += 4;
+ }
+ break;
+ }
+ }
+ }
+ return TRUE;
+}
+void CCodec_ProgressiveDecoder::GifReadScanlineCallback(void* pModule, FX_INT32 row_num, FX_LPBYTE row_buf)
+{
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap;
+ ASSERT(pDIBitmap != NULL);
+ FX_INT32 img_width = pCodec->m_GifFrameRect.Width();
+ if (!pDIBitmap->HasAlpha()) {
+ FX_LPBYTE byte_ptr = row_buf;
+ for (int i = 0; i < img_width; i++ ) {
+ if(*byte_ptr == pCodec->m_GifTransIndex) {
+ *byte_ptr = pCodec->m_GifBgIndex;
+ }
+ byte_ptr++;
+ }
+ }
+ FX_INT32 pal_index = pCodec->m_GifBgIndex;
+ if (pCodec->m_GifTransIndex != -1 && pCodec->m_pDeviceBitmap->HasAlpha()) {
+ pal_index = pCodec->m_GifTransIndex;
+ }
+ FXSYS_memset8(pCodec->m_pDecodeBuf, pal_index, pCodec->m_SrcWidth);
+ FX_BOOL bLastPass = ((row_num % 2) == 1) ? TRUE : FALSE;
+ FX_INT32 line = row_num + pCodec->m_GifFrameRect.top;
+ FX_INT32 left = pCodec->m_GifFrameRect.left;
+ FXSYS_memcpy32(pCodec->m_pDecodeBuf + left, row_buf, img_width);
+ int src_top = pCodec->m_clipBox.top;
+ int src_bottom = pCodec->m_clipBox.bottom;
+ int des_top = pCodec->m_startY;
+ int src_hei = pCodec->m_clipBox.Height();
+ int des_hei = pCodec->m_sizeY;
+ if(line >= src_top && line < src_bottom) {
+ double scale_y = (double)des_hei / (double)src_hei;
+ int src_row = line - src_top;
+ int des_row = (int)(src_row * scale_y) + des_top;
+ if(des_row >= des_top + des_hei) {
+ return;
+ }
+ pCodec->ReSampleScanline(pDIBitmap, des_row, pCodec->m_pDecodeBuf, pCodec->m_SrcFormat);
+ if(scale_y > 1.0 && (!pCodec->m_bInterpol || pCodec->m_SrcPassNumber == 1)) {
+ pCodec->ResampleVert(pDIBitmap, scale_y, des_row);
+ return;
+ }
+ if(scale_y > 1.0) {
+ int des_bottom = des_top + pCodec->m_sizeY;
+ int des_Bpp = pDIBitmap->GetBPP() >> 3;
+ FX_DWORD des_ScanOffet = pCodec->m_startX * des_Bpp;
+ if(des_row + (int)scale_y >= des_bottom - 1) {
+ FX_LPBYTE scan_src = (FX_LPBYTE)pDIBitmap->GetScanline(des_row) + des_ScanOffet;
+ int cur_row = des_row;
+ while (++cur_row < des_bottom) {
+ FX_LPBYTE scan_des = (FX_LPBYTE)pDIBitmap->GetScanline(cur_row) + des_ScanOffet;
+ FX_DWORD size = pCodec->m_sizeX * des_Bpp;
+ FXSYS_memcpy32(scan_des, scan_src, size);
+ }
+ }
+ if(bLastPass) {
+ pCodec->GifDoubleLineResampleVert(pDIBitmap, scale_y, des_row);
+ }
+ }
+ }
+}
+void CCodec_ProgressiveDecoder::GifDoubleLineResampleVert(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row)
+{
+ int des_Bpp = pDeviceBitmap->GetBPP() >> 3;
+ FX_DWORD des_ScanOffet = m_startX * des_Bpp;
+ int des_top = m_startY;
+ int des_row_1 = des_row - int(2 * scale_y);
+ if(des_row_1 < des_top) {
+ des_row_1 = des_top;
+ }
+ for (; des_row_1 < des_row; des_row_1++) {
+ FX_LPBYTE scan_des = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet;
+ PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top);
+ FX_LPCBYTE scan_src1 = pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) + des_ScanOffet;
+ FX_LPCBYTE scan_src2 = pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + des_top) + des_ScanOffet;
+ for (int des_col = 0; des_col < m_sizeX; des_col++) {
+ switch(pDeviceBitmap->GetFormat()) {
+ case FXDIB_Invalid:
+ case FXDIB_1bppMask:
+ case FXDIB_1bppRgb:
+ return;
+ case FXDIB_8bppMask:
+ case FXDIB_8bppRgb: {
+ if(pDeviceBitmap->GetPalette() != NULL) {
+ return;
+ }
+ int des_g = 0;
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (FX_BYTE)(des_g >> 16);
+ }
+ break;
+ case FXDIB_Rgb:
+ case FXDIB_Rgb32: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ des_b += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_r += pWeight->m_Weights[0] * (*scan_src1++);
+ scan_src1 += des_Bpp - 3;
+ des_b += pWeight->m_Weights[1] * (*scan_src2++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ des_r += pWeight->m_Weights[1] * (*scan_src2++);
+ scan_src2 += des_Bpp - 3;
+ *scan_des++ = (FX_BYTE)((des_b) >> 16);
+ *scan_des++ = (FX_BYTE)((des_g) >> 16);
+ *scan_des++ = (FX_BYTE)((des_r) >> 16);
+ scan_des += des_Bpp - 3;
+ }
+ break;
+ case FXDIB_Argb: {
+ FX_DWORD des_a = 0, des_b = 0, des_g = 0, des_r = 0;
+ des_b += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_r += pWeight->m_Weights[0] * (*scan_src1++);
+ des_a += pWeight->m_Weights[0] * (*scan_src1++);
+ des_b += pWeight->m_Weights[1] * (*scan_src2++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ des_r += pWeight->m_Weights[1] * (*scan_src2++);
+ des_a += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (FX_BYTE)((des_b) >> 16);
+ *scan_des++ = (FX_BYTE)((des_g) >> 16);
+ *scan_des++ = (FX_BYTE)((des_r) >> 16);
+ *scan_des++ = (FX_BYTE)((des_a) >> 16);
+ }
+ break;
+ default:
+ return;
+ }
+ }
+ }
+ int des_bottom = des_top + m_sizeY - 1;
+ if(des_row + (int)(2 * scale_y) >= des_bottom && des_row + (int)scale_y < des_bottom) {
+ GifDoubleLineResampleVert(pDeviceBitmap, scale_y, des_row + (int)scale_y);
+ }
+}
+FX_BOOL CCodec_ProgressiveDecoder::BmpReadMoreData(ICodec_BmpModule* pBmpModule, FXCODEC_STATUS& err_status)
+{
+ FX_DWORD dwSize = (FX_DWORD)m_pFile->GetSize();
+ if (dwSize <= m_offSet) {
+ return FALSE;
+ }
+ dwSize = dwSize - m_offSet;
+ FX_DWORD dwAvail = pBmpModule->GetAvailInput(m_pBmpContext, NULL);
+ if (dwAvail == m_SrcSize) {
+ if (dwSize > FXCODEC_BLOCK_SIZE) {
+ dwSize = FXCODEC_BLOCK_SIZE;
+ }
+ m_SrcSize = (dwSize + dwAvail + FXCODEC_BLOCK_SIZE - 1) / FXCODEC_BLOCK_SIZE * FXCODEC_BLOCK_SIZE;
+ m_pSrcBuf = FX_Realloc(FX_BYTE, m_pSrcBuf, m_SrcSize);
+ if (!m_pSrcBuf) {
+ err_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ } else {
+ FX_DWORD dwConsume = m_SrcSize - dwAvail;
+ if (dwAvail) {
+ FXSYS_memcpy32(m_pSrcBuf, m_pSrcBuf + dwConsume, dwAvail);
+ }
+ if (dwSize > dwConsume) {
+ dwSize = dwConsume;
+ }
+ }
+ if (!m_pFile->ReadBlock(m_pSrcBuf + dwAvail, m_offSet, dwSize)) {
+ err_status = FXCODEC_STATUS_ERR_READ;
+ return FALSE;
+ }
+ m_offSet += dwSize;
+ pBmpModule->Input(m_pBmpContext, m_pSrcBuf, dwSize + dwAvail);
+ return TRUE;
+}
+FX_BOOL CCodec_ProgressiveDecoder::BmpInputImagePositionBufCallback(void* pModule, FX_DWORD rcd_pos)
+{
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ pCodec->m_offSet = rcd_pos;
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR;
+ if(!pCodec->BmpReadMoreData(pCodec->m_pCodecMgr->GetBmpModule(), error_status)) {
+ return FALSE;
+ }
+ return TRUE;
+}
+void CCodec_ProgressiveDecoder::BmpReadScanlineCallback(void* pModule, FX_INT32 row_num, FX_LPBYTE row_buf)
+{
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap;
+ ASSERT(pDIBitmap != NULL);
+ FXSYS_memcpy32(pCodec->m_pDecodeBuf, row_buf, pCodec->m_ScanlineSize);
+ int src_top = pCodec->m_clipBox.top;
+ int src_bottom = pCodec->m_clipBox.bottom;
+ int des_top = pCodec->m_startY;
+ int src_hei = pCodec->m_clipBox.Height();
+ int des_hei = pCodec->m_sizeY;
+ if(row_num >= src_top && row_num < src_bottom) {
+ double scale_y = (double)des_hei / (double)src_hei;
+ int src_row = row_num - src_top;
+ int des_row = (int)(src_row * scale_y) + des_top;
+ if(des_row >= des_top + des_hei) {
+ return;
+ }
+ pCodec->ReSampleScanline(pDIBitmap, des_row, pCodec->m_pDecodeBuf, pCodec->m_SrcFormat);
+ if(scale_y > 1.0) {
+ if(pCodec->m_BmpIsTopBottom || !pCodec->m_bInterpol) {
+ pCodec->ResampleVert(pDIBitmap, scale_y, des_row);
+ return;
+ } else {
+ pCodec->ResampleVertBT(pDIBitmap, scale_y, des_row);
+ }
+ }
+ }
+}
+void CCodec_ProgressiveDecoder::ResampleVertBT(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row)
+{
+ int des_Bpp = pDeviceBitmap->GetBPP() >> 3;
+ FX_DWORD des_ScanOffet = m_startX * des_Bpp;
+ int des_top = m_startY;
+ int des_bottom = m_startY + m_sizeY;
+ int des_row_1 = des_row + int(scale_y);
+ if(des_row_1 >= des_bottom - 1) {
+ FX_LPBYTE scan_src = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ while (++des_row < des_bottom) {
+ FX_LPBYTE scan_des = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ FX_DWORD size = m_sizeX * des_Bpp;
+ FXSYS_memcpy32(scan_des, scan_src, size);
+ }
+ return;
+ }
+ for (; des_row_1 > des_row; des_row_1--) {
+ FX_LPBYTE scan_des = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet;
+ PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top);
+ FX_LPCBYTE scan_src1 = pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) + des_ScanOffet;
+ FX_LPCBYTE scan_src2 = pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + des_top) + des_ScanOffet;
+ for (int des_col = 0; des_col < m_sizeX; des_col++) {
+ switch(pDeviceBitmap->GetFormat()) {
+ case FXDIB_Invalid:
+ case FXDIB_1bppMask:
+ case FXDIB_1bppRgb:
+ return;
+ case FXDIB_8bppMask:
+ case FXDIB_8bppRgb: {
+ if(pDeviceBitmap->GetPalette() != NULL) {
+ return;
+ }
+ int des_g = 0;
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (FX_BYTE)(des_g >> 16);
+ }
+ break;
+ case FXDIB_Rgb:
+ case FXDIB_Rgb32: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ des_b += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_r += pWeight->m_Weights[0] * (*scan_src1++);
+ scan_src1 += des_Bpp - 3;
+ des_b += pWeight->m_Weights[1] * (*scan_src2++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ des_r += pWeight->m_Weights[1] * (*scan_src2++);
+ scan_src2 += des_Bpp - 3;
+ *scan_des++ = (FX_BYTE)((des_b) >> 16);
+ *scan_des++ = (FX_BYTE)((des_g) >> 16);
+ *scan_des++ = (FX_BYTE)((des_r) >> 16);
+ scan_des += des_Bpp - 3;
+ }
+ break;
+ case FXDIB_Argb: {
+ FX_DWORD des_a = 0, des_b = 0, des_g = 0, des_r = 0;
+ des_b += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_r += pWeight->m_Weights[0] * (*scan_src1++);
+ des_a += pWeight->m_Weights[0] * (*scan_src1++);
+ des_b += pWeight->m_Weights[1] * (*scan_src2++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ des_r += pWeight->m_Weights[1] * (*scan_src2++);
+ des_a += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (FX_BYTE)((des_b) >> 16);
+ *scan_des++ = (FX_BYTE)((des_g) >> 16);
+ *scan_des++ = (FX_BYTE)((des_r) >> 16);
+ *scan_des++ = (FX_BYTE)((des_a) >> 16);
+ }
+ break;
+ default:
+ return;
+ }
+ }
+ }
+}
+FX_BOOL CCodec_ProgressiveDecoder::DetectImageType(FXCODEC_IMAGE_TYPE imageType, CFX_DIBAttribute* pAttribute)
+{
+ m_offSet = 0;
+ FX_DWORD size = (FX_DWORD)m_pFile->GetSize();
+ if(size > FXCODEC_BLOCK_SIZE) {
+ size = FXCODEC_BLOCK_SIZE;
+ }
+ if(m_pSrcBuf != NULL) {
+ FX_Free(m_pSrcBuf);
+ m_pSrcBuf = NULL;
+ }
+ m_pSrcBuf = FX_Alloc(FX_BYTE, size);
+ if(m_pSrcBuf == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ FXSYS_memset32(m_pSrcBuf, 0, size);
+ m_SrcSize = size;
+ switch(imageType) {
+ case FXCODEC_IMAGE_BMP: {
+ ICodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule();
+ if(pBmpModule == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ pBmpModule->InputImagePositionBufCallback = BmpInputImagePositionBufCallback;
+ pBmpModule->ReadScanlineCallback = BmpReadScanlineCallback;
+ m_pBmpContext = pBmpModule->Start((void*)this);
+ if(m_pBmpContext == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ FX_BOOL bResult = m_pFile->ReadBlock(m_pSrcBuf, 0, size);
+ if(!bResult) {
+ m_status = FXCODEC_STATUS_ERR_READ;
+ return FALSE;
+ }
+ m_offSet += size;
+ pBmpModule->Input(m_pBmpContext, m_pSrcBuf, size);
+ FX_DWORD* pPalette = NULL;
+ FX_INT32 readResult = pBmpModule->ReadHeader(m_pBmpContext, &m_SrcWidth, &m_SrcHeight, &m_BmpIsTopBottom,
+ &m_SrcComponents, &m_SrcPaletteNumber, &pPalette, pAttribute);
+ while(readResult == 2) {
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_FORMAT;
+ if(!BmpReadMoreData(pBmpModule, error_status)) {
+ m_status = error_status;
+ return FALSE;
+ }
+ readResult = pBmpModule->ReadHeader(m_pBmpContext, &m_SrcWidth, &m_SrcHeight, &m_BmpIsTopBottom,
+ &m_SrcComponents, &m_SrcPaletteNumber, &pPalette, pAttribute);
+ }
+ if(readResult == 1) {
+ m_SrcBPC = 8;
+ m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight);
+ if(m_pSrcPalette != NULL) {
+ FX_Free(m_pSrcPalette);
+ m_pSrcPalette = NULL;
+ }
+ if (m_SrcPaletteNumber) {
+ m_pSrcPalette = FX_Alloc(FX_ARGB, m_SrcPaletteNumber);
+ if(m_pSrcPalette == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ FXSYS_memcpy32(m_pSrcPalette, pPalette, m_SrcPaletteNumber * sizeof(FX_DWORD));
+ }
+ return TRUE;
+ }
+ if(m_pBmpContext != NULL) {
+ pBmpModule->Finish(m_pBmpContext);
+ m_pBmpContext = NULL;
+ }
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ break;
+ case FXCODEC_IMAGE_JPG: {
+ ICodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule();
+ if(pJpegModule == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ m_pJpegContext = pJpegModule->Start();
+ if(m_pJpegContext == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ FX_BOOL bResult = m_pFile->ReadBlock(m_pSrcBuf, 0, size);
+ if(!bResult) {
+ m_status = FXCODEC_STATUS_ERR_READ;
+ return FALSE;
+ }
+ m_offSet += size;
+ pJpegModule->Input(m_pJpegContext, m_pSrcBuf, size);
+ FX_INT32 readResult = pJpegModule->ReadHeader(m_pJpegContext, &m_SrcWidth, &m_SrcHeight, &m_SrcComponents, pAttribute);
+ while(readResult == 2) {
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_FORMAT;
+ if(!JpegReadMoreData(pJpegModule, error_status)) {
+ m_status = error_status;
+ return FALSE;
+ }
+ readResult = pJpegModule->ReadHeader(m_pJpegContext, &m_SrcWidth, &m_SrcHeight, &m_SrcComponents, pAttribute);
+ }
+ if(!readResult) {
+ m_SrcBPC = 8;
+ m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight);
+ return TRUE;
+ }
+ if(m_pJpegContext != NULL) {
+ pJpegModule->Finish(m_pJpegContext);
+ m_pJpegContext = NULL;
+ }
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ break;
+ case FXCODEC_IMAGE_PNG: {
+ ICodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule();
+ if(pPngModule == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ pPngModule->ReadHeaderCallback = CCodec_ProgressiveDecoder::PngReadHeaderFunc;
+ pPngModule->AskScanlineBufCallback = CCodec_ProgressiveDecoder::PngAskScanlineBufFunc;
+ pPngModule->FillScanlineBufCompletedCallback = CCodec_ProgressiveDecoder::PngFillScanlineBufCompletedFunc;
+ m_pPngContext = pPngModule->Start((void*)this);
+ if(m_pPngContext == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ FX_BOOL bResult = m_pFile->ReadBlock(m_pSrcBuf, 0, size);
+ if(!bResult) {
+ m_status = FXCODEC_STATUS_ERR_READ;
+ return FALSE;
+ }
+ m_offSet += size;
+ bResult = pPngModule->Input(m_pPngContext, m_pSrcBuf, size, pAttribute);
+ while(bResult) {
+ FX_DWORD remain_size = (FX_DWORD)m_pFile->GetSize() - m_offSet;
+ FX_DWORD input_size = remain_size > FXCODEC_BLOCK_SIZE ? FXCODEC_BLOCK_SIZE : remain_size;
+ if(input_size == 0) {
+ if(m_pPngContext != NULL) {
+ pPngModule->Finish(m_pPngContext);
+ }
+ m_pPngContext = NULL;
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ if(m_pSrcBuf != NULL && input_size > m_SrcSize) {
+ FX_Free(m_pSrcBuf);
+ m_pSrcBuf = FX_Alloc(FX_BYTE, input_size);
+ if(m_pSrcBuf == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ FXSYS_memset32(m_pSrcBuf, 0, input_size);
+ m_SrcSize = input_size;
+ }
+ bResult = m_pFile->ReadBlock(m_pSrcBuf, m_offSet, input_size);
+ if(!bResult) {
+ m_status = FXCODEC_STATUS_ERR_READ;
+ return FALSE;
+ }
+ m_offSet += input_size;
+ bResult = pPngModule->Input(m_pPngContext, m_pSrcBuf, input_size, pAttribute);
+ }
+ ASSERT(!bResult);
+ if(m_pPngContext != NULL) {
+ pPngModule->Finish(m_pPngContext);
+ m_pPngContext = NULL;
+ }
+ if(m_SrcPassNumber == 0) {
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ }
+ break;
+ case FXCODEC_IMAGE_GIF: {
+ ICodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule();
+ if(pGifModule == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ pGifModule->RecordCurrentPositionCallback = CCodec_ProgressiveDecoder::GifRecordCurrentPositionCallback;
+ pGifModule->AskLocalPaletteBufCallback = CCodec_ProgressiveDecoder::GifAskLocalPaletteBufCallback;
+ pGifModule->InputRecordPositionBufCallback = CCodec_ProgressiveDecoder::GifInputRecordPositionBufCallback;
+ pGifModule->ReadScanlineCallback = CCodec_ProgressiveDecoder::GifReadScanlineCallback;
+ m_pGifContext = pGifModule->Start((void*)this);
+ if(m_pGifContext == NULL) {
+ m_status = FXCODEC_STATUS_ERR_MEMORY;
+ return FALSE;
+ }
+ FX_BOOL bResult = m_pFile->ReadBlock(m_pSrcBuf, 0, size);
+ if(!bResult) {
+ m_status = FXCODEC_STATUS_ERR_READ;
+ return FALSE;
+ }
+ m_offSet += size;
+ pGifModule->Input(m_pGifContext, m_pSrcBuf, size);
+ m_SrcComponents = 1;
+ FX_INT32 readResult = pGifModule->ReadHeader(m_pGifContext, &m_SrcWidth, &m_SrcHeight,
+ &m_GifPltNumber, (void**)&m_pGifPalette, &m_GifBgIndex);
+ while(readResult == 2) {
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_FORMAT;
+ if(!GifReadMoreData(pGifModule, error_status)) {
+ m_status = error_status;
+ return FALSE;
+ }
+ readResult = pGifModule->ReadHeader(m_pGifContext, &m_SrcWidth, &m_SrcHeight,
+ &m_GifPltNumber, (void**)&m_pGifPalette, &m_GifBgIndex);
+ }
+ if(readResult == 1) {
+ m_SrcBPC = 8;
+ m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight);
+ return TRUE;
+ }
+ if(m_pGifContext != NULL) {
+ pGifModule->Finish(m_pGifContext);
+ m_pGifContext = NULL;
+ }
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ break;
+ case FXCODEC_IMAGE_TIF: {
+ ICodec_TiffModule* pTiffModule = m_pCodecMgr->GetTiffModule();
+ if(pTiffModule == NULL) {
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ m_pTiffContext = pTiffModule->CreateDecoder(m_pFile);
+ if(m_pTiffContext == NULL) {
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ FX_INT32 frames = 0;
+ pTiffModule->GetFrames(m_pTiffContext, frames);
+ FX_DWORD bpc;
+ FX_BOOL ret = pTiffModule->LoadFrameInfo(m_pTiffContext, 0, (FX_DWORD&)m_SrcWidth, (FX_DWORD&)m_SrcHeight, (FX_DWORD&)m_SrcComponents, bpc, pAttribute);
+ m_SrcComponents = 4;
+ m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight);
+ if(!ret) {
+ pTiffModule->DestroyDecoder(m_pTiffContext);
+ (m_pTiffContext = NULL);
+ (m_status = FXCODEC_STATUS_ERR_FORMAT);
+ return FALSE;
+ }
+ }
+ break;
+ default:
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ return TRUE;
+}
+FXCODEC_STATUS CCodec_ProgressiveDecoder::LoadImageInfo(IFX_FileRead* pFile, FXCODEC_IMAGE_TYPE imageType, CFX_DIBAttribute* pAttribute)
+{
+ switch(m_status) {
+ case FXCODEC_STATUS_FRAME_READY:
+ case FXCODEC_STATUS_FRAME_TOBECONTINUE:
+ case FXCODEC_STATUS_DECODE_READY:
+ case FXCODEC_STATUS_DECODE_TOBECONTINUE:
+ return FXCODEC_STATUS_ERROR;
+ default:
+ ;
+ }
+ if(pFile == NULL) {
+ m_status = FXCODEC_STATUS_ERR_PARAMS;
+ m_pFile = NULL;
+ return m_status;
+ }
+ m_pFile = pFile;
+ m_offSet = 0;
+ m_SrcWidth = m_SrcHeight = 0;
+ m_SrcComponents = m_SrcBPC = 0;
+ m_clipBox = FX_RECT(0, 0, 0, 0);
+ m_startX = m_startY = 0;
+ m_sizeX = m_sizeY = 0;
+ m_SrcPassNumber = 0;
+ if(imageType != FXCODEC_IMAGE_UNKNOWN &&
+ DetectImageType(imageType, pAttribute)) {
+ m_imagType = imageType;
+ m_status = FXCODEC_STATUS_FRAME_READY;
+ return m_status;
+ }
+ for (int type = FXCODEC_IMAGE_BMP; type < FXCODEC_IMAGE_MAX; type++) {
+ if(DetectImageType((FXCODEC_IMAGE_TYPE)type, pAttribute)) {
+ m_imagType = (FXCODEC_IMAGE_TYPE)type;
+ m_status = FXCODEC_STATUS_FRAME_READY;
+ return m_status;
+ }
+ }
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ m_pFile = NULL;
+ return m_status;
+}
+void CCodec_ProgressiveDecoder::SetClipBox(FX_RECT* clip)
+{
+ if(m_status != FXCODEC_STATUS_FRAME_READY) {
+ return;
+ }
+ if(clip->IsEmpty()) {
+ m_clipBox = FX_RECT(0, 0, 0, 0);
+ return;
+ }
+ if(clip->left < 0) {
+ clip->left = 0;
+ }
+ if(clip->right > m_SrcWidth) {
+ clip->right = m_SrcWidth;
+ }
+ if(clip->top < 0) {
+ clip->top = 0;
+ }
+ if(clip->bottom > m_SrcHeight) {
+ clip->bottom = m_SrcHeight;
+ }
+ if(clip->IsEmpty()) {
+ m_clipBox = FX_RECT(0, 0, 0, 0);
+ return;
+ }
+ m_clipBox = *clip;
+}
+void CCodec_ProgressiveDecoder::GetDownScale(int& down_scale)
+{
+ down_scale = 1;
+ int ratio_w = m_clipBox.Width() / m_sizeX;
+ int ratio_h = m_clipBox.Height() / m_sizeY;
+ int ratio = (ratio_w > ratio_h) ? ratio_h : ratio_w;
+ if (ratio >= 8) {
+ down_scale = 8;
+ } else if (ratio >= 4) {
+ down_scale = 4;
+ } else if (ratio >= 2) {
+ down_scale = 2;
+ }
+ m_clipBox.left /= down_scale;
+ m_clipBox.right /= down_scale;
+ m_clipBox.top /= down_scale;
+ m_clipBox.bottom /= down_scale;
+ if(m_clipBox.right == m_clipBox.left) {
+ m_clipBox.right = m_clipBox.left + 1;
+ }
+ if(m_clipBox.bottom == m_clipBox.top) {
+ m_clipBox.bottom = m_clipBox.top + 1;
+ }
+}
+void CCodec_ProgressiveDecoder::GetTransMethod(FXDIB_Format des_format, FXCodec_Format src_format)
+{
+ switch(des_format) {
+ case FXDIB_1bppMask:
+ case FXDIB_1bppRgb: {
+ switch(src_format) {
+ case FXCodec_1bppGray:
+ m_TransMethod = 0;
+ break;
+ default:
+ m_TransMethod = -1;
+ }
+ }
+ break;
+ case FXDIB_8bppMask:
+ case FXDIB_8bppRgb: {
+ switch(src_format) {
+ case FXCodec_1bppGray:
+ m_TransMethod = 1;
+ break;
+ case FXCodec_8bppGray:
+ m_TransMethod = 2;
+ break;
+ case FXCodec_1bppRgb:
+ case FXCodec_8bppRgb:
+ m_TransMethod = 3;
+ break;
+ case FXCodec_Rgb:
+ case FXCodec_Rgb32:
+ case FXCodec_Argb:
+ m_TransMethod = 4;
+ break;
+ case FXCodec_Cmyk:
+ m_TransMethod = 5;
+ break;
+ default:
+ m_TransMethod = -1;
+ }
+ }
+ break;
+ case FXDIB_Rgb: {
+ switch(src_format) {
+ case FXCodec_1bppGray:
+ m_TransMethod = 6;
+ break;
+ case FXCodec_8bppGray:
+ m_TransMethod = 7;
+ break;
+ case FXCodec_1bppRgb:
+ case FXCodec_8bppRgb:
+ m_TransMethod = 8;
+ break;
+ case FXCodec_Rgb:
+ case FXCodec_Rgb32:
+ case FXCodec_Argb:
+ m_TransMethod = 9;
+ break;
+ case FXCodec_Cmyk:
+ m_TransMethod = 10;
+ break;
+ default:
+ m_TransMethod = -1;
+ }
+ }
+ break;
+ case FXDIB_Rgb32:
+ case FXDIB_Argb: {
+ switch(src_format) {
+ case FXCodec_1bppGray:
+ m_TransMethod = 6;
+ break;
+ case FXCodec_8bppGray:
+ m_TransMethod = 7;
+ break;
+ case FXCodec_1bppRgb:
+ case FXCodec_8bppRgb:
+ if(des_format == FXDIB_Argb) {
+ m_TransMethod = 12;
+ } else {
+ m_TransMethod = 8;
+ }
+ break;
+ case FXCodec_Rgb:
+ case FXCodec_Rgb32:
+ m_TransMethod = 9;
+ break;
+ case FXCodec_Cmyk:
+ m_TransMethod = 10;
+ break;
+ case FXCodec_Argb:
+ m_TransMethod = 11;
+ break;
+ default:
+ m_TransMethod = -1;
+ }
+ }
+ break;
+ default:
+ m_TransMethod = -1;
+ }
+}
+void _RGB2BGR(FX_LPBYTE buffer, int width = 1)
+{
+ if (buffer && width > 0) {
+ FX_BYTE temp;
+ int i = 0;
+ int j = 0;
+ for (; i < width; i++, j += 3) {
+ temp = buffer[j];
+ buffer[j] = buffer[j + 2];
+ buffer[j + 2] = temp;
+ }
+ }
+}
+void CCodec_ProgressiveDecoder::ReSampleScanline(CFX_DIBitmap* pDeviceBitmap, int des_line, FX_LPBYTE src_scan, FXCodec_Format src_format)
+{
+ int src_left = m_clipBox.left;
+ int des_left = m_startX;
+ FX_LPBYTE des_scan = pDeviceBitmap->GetBuffer() + des_line * pDeviceBitmap->GetPitch();
+ int src_bpp = src_format & 0xff;
+ int des_bpp = pDeviceBitmap->GetBPP();
+ int src_Bpp = src_bpp >> 3;
+ int des_Bpp = des_bpp >> 3;
+ src_scan += src_left * src_Bpp;
+ des_scan += des_left * des_Bpp;
+ for (int des_col = 0; des_col < m_sizeX; des_col++) {
+ PixelWeight* pPixelWeights = m_WeightHorz.GetPixelWeight(des_col);
+ switch(m_TransMethod) {
+ case -1:
+ return;
+ case 0:
+ return;
+ case 1:
+ return;
+ case 2: {
+ FX_DWORD des_g = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ des_g += pixel_weight * src_scan[j];
+ }
+ *des_scan++ = (FX_BYTE)(des_g >> 16);
+ }
+ break;
+ case 3: {
+ int des_r = 0, des_g = 0, des_b = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ unsigned long argb = m_pSrcPalette[src_scan[j]];
+ des_r += pixel_weight * (FX_BYTE)(argb >> 16);
+ des_g += pixel_weight * (FX_BYTE)(argb >> 8);
+ des_b += pixel_weight * (FX_BYTE)argb;
+ }
+ *des_scan++ = (FX_BYTE)FXRGB2GRAY((des_r >> 16), (des_g >> 16), (des_b >> 16));
+ }
+ break;
+ case 4: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ FX_LPCBYTE src_pixel = src_scan + j * src_Bpp;
+ des_b += pixel_weight * (*src_pixel++);
+ des_g += pixel_weight * (*src_pixel++);
+ des_r += pixel_weight * (*src_pixel);
+ }
+ *des_scan++ = (FX_BYTE)FXRGB2GRAY((des_r >> 16), (des_g >> 16), (des_b >> 16));
+ }
+ break;
+ case 5: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ FX_LPCBYTE src_pixel = src_scan + j * src_Bpp;
+ FX_BYTE src_b = 0, src_g = 0, src_r = 0;
+ AdobeCMYK_to_sRGB1(255 - src_pixel[0], 255 - src_pixel[1], 255 - src_pixel[2], 255 - src_pixel[3],
+ src_r, src_g, src_b);
+ des_b += pixel_weight * src_b;
+ des_g += pixel_weight * src_g;
+ des_r += pixel_weight * src_r;
+ }
+ *des_scan++ = (FX_BYTE)FXRGB2GRAY((des_r >> 16), (des_g >> 16), (des_b >> 16));
+ }
+ break;
+ case 6:
+ return;
+ case 7: {
+ FX_DWORD des_g = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ des_g += pixel_weight * src_scan[j];
+ }
+ FXSYS_memset8(des_scan, (FX_BYTE)(des_g >> 16), 3);
+ des_scan += des_Bpp;
+ }
+ break;
+ case 8: {
+ int des_r = 0, des_g = 0, des_b = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ unsigned long argb = m_pSrcPalette[src_scan[j]];
+ des_r += pixel_weight * (FX_BYTE)(argb >> 16);
+ des_g += pixel_weight * (FX_BYTE)(argb >> 8);
+ des_b += pixel_weight * (FX_BYTE)argb;
+ }
+ *des_scan++ = (FX_BYTE)((des_b) >> 16);
+ *des_scan++ = (FX_BYTE)((des_g) >> 16);
+ *des_scan++ = (FX_BYTE)((des_r) >> 16);
+ des_scan += des_Bpp - 3;
+ }
+ break;
+ case 12: {
+ if (m_pBmpContext) {
+ int des_r = 0, des_g = 0, des_b = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ unsigned long argb = m_pSrcPalette[src_scan[j]];
+ des_r += pixel_weight * (FX_BYTE)(argb >> 16);
+ des_g += pixel_weight * (FX_BYTE)(argb >> 8);
+ des_b += pixel_weight * (FX_BYTE)argb;
+ }
+ *des_scan++ = (FX_BYTE)((des_b) >> 16);
+ *des_scan++ = (FX_BYTE)((des_g) >> 16);
+ *des_scan++ = (FX_BYTE)((des_r) >> 16);
+ *des_scan++ = 0xFF;
+ } else {
+ int des_a = 0, des_r = 0, des_g = 0, des_b = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ unsigned long argb = m_pSrcPalette[src_scan[j]];
+ des_a += pixel_weight * (FX_BYTE)(argb >> 24);
+ des_r += pixel_weight * (FX_BYTE)(argb >> 16);
+ des_g += pixel_weight * (FX_BYTE)(argb >> 8);
+ des_b += pixel_weight * (FX_BYTE)argb;
+ }
+ *des_scan++ = (FX_BYTE)((des_b) >> 16);
+ *des_scan++ = (FX_BYTE)((des_g) >> 16);
+ *des_scan++ = (FX_BYTE)((des_r) >> 16);
+ *des_scan++ = (FX_BYTE)((des_a) >> 16);
+ }
+ }
+ break;
+ case 9: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ FX_LPCBYTE src_pixel = src_scan + j * src_Bpp;
+ des_b += pixel_weight * (*src_pixel++);
+ des_g += pixel_weight * (*src_pixel++);
+ des_r += pixel_weight * (*src_pixel);
+ }
+ *des_scan++ = (FX_BYTE)((des_b) >> 16);
+ *des_scan++ = (FX_BYTE)((des_g) >> 16);
+ *des_scan++ = (FX_BYTE)((des_r) >> 16);
+ des_scan += des_Bpp - 3;
+ }
+ break;
+ case 10: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ FX_LPCBYTE src_pixel = src_scan + j * src_Bpp;
+ FX_BYTE src_b = 0, src_g = 0, src_r = 0;
+ AdobeCMYK_to_sRGB1(255 - src_pixel[0], 255 - src_pixel[1], 255 - src_pixel[2], 255 - src_pixel[3],
+ src_r, src_g, src_b);
+ des_b += pixel_weight * src_b;
+ des_g += pixel_weight * src_g;
+ des_r += pixel_weight * src_r;
+ }
+ *des_scan++ = (FX_BYTE)((des_b) >> 16);
+ *des_scan++ = (FX_BYTE)((des_g) >> 16);
+ *des_scan++ = (FX_BYTE)((des_r) >> 16);
+ des_scan += des_Bpp - 3;
+ }
+ break;
+ case 11: {
+ FX_DWORD des_alpha = 0, des_r = 0, des_g = 0, des_b = 0;
+ for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
+ int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
+ FX_LPCBYTE src_pixel = src_scan + j * src_Bpp;
+ pixel_weight = pixel_weight * src_pixel[3] / 255;
+ des_b += pixel_weight * (*src_pixel++);
+ des_g += pixel_weight * (*src_pixel++);
+ des_r += pixel_weight * (*src_pixel);
+ des_alpha += pixel_weight;
+ }
+ *des_scan++ = (FX_BYTE)((des_b) >> 16);
+ *des_scan++ = (FX_BYTE)((des_g) >> 16);
+ *des_scan++ = (FX_BYTE)((des_r) >> 16);
+ *des_scan++ = (FX_BYTE)((des_alpha * 255) >> 16);
+ }
+ break;
+ default:
+ return;
+ }
+ }
+}
+void CCodec_ProgressiveDecoder::ResampleVert(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row)
+{
+ int des_Bpp = pDeviceBitmap->GetBPP() >> 3;
+ FX_DWORD des_ScanOffet = m_startX * des_Bpp;
+ if(m_bInterpol) {
+ int des_top = m_startY;
+ int des_row_1 = des_row - int(scale_y);
+ if(des_row_1 < des_top) {
+ int des_bottom = des_top + m_sizeY;
+ if(des_row + (int)scale_y >= des_bottom - 1) {
+ FX_LPBYTE scan_src = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ while (++des_row < des_bottom) {
+ FX_LPBYTE scan_des = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ FX_DWORD size = m_sizeX * des_Bpp;
+ FXSYS_memcpy32(scan_des, scan_src, size);
+ }
+ }
+ return;
+ }
+ for (; des_row_1 < des_row; des_row_1++) {
+ FX_LPBYTE scan_des = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet;
+ PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top);
+ FX_LPCBYTE scan_src1 = pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) + des_ScanOffet;
+ FX_LPCBYTE scan_src2 = pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + des_top) + des_ScanOffet;
+ for (int des_col = 0; des_col < m_sizeX; des_col++) {
+ switch(pDeviceBitmap->GetFormat()) {
+ case FXDIB_Invalid:
+ case FXDIB_1bppMask:
+ case FXDIB_1bppRgb:
+ return;
+ case FXDIB_8bppMask:
+ case FXDIB_8bppRgb: {
+ if(pDeviceBitmap->GetPalette() != NULL) {
+ return;
+ }
+ int des_g = 0;
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (FX_BYTE)(des_g >> 16);
+ }
+ break;
+ case FXDIB_Rgb:
+ case FXDIB_Rgb32: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ des_b += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_r += pWeight->m_Weights[0] * (*scan_src1++);
+ scan_src1 += des_Bpp - 3;
+ des_b += pWeight->m_Weights[1] * (*scan_src2++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ des_r += pWeight->m_Weights[1] * (*scan_src2++);
+ scan_src2 += des_Bpp - 3;
+ *scan_des++ = (FX_BYTE)((des_b) >> 16);
+ *scan_des++ = (FX_BYTE)((des_g) >> 16);
+ *scan_des++ = (FX_BYTE)((des_r) >> 16);
+ scan_des += des_Bpp - 3;
+ }
+ break;
+ case FXDIB_Argb: {
+ FX_DWORD des_a = 0, des_b = 0, des_g = 0, des_r = 0;
+ des_b += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_r += pWeight->m_Weights[0] * (*scan_src1++);
+ des_a += pWeight->m_Weights[0] * (*scan_src1++);
+ des_b += pWeight->m_Weights[1] * (*scan_src2++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ des_r += pWeight->m_Weights[1] * (*scan_src2++);
+ des_a += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (FX_BYTE)((des_b) >> 16);
+ *scan_des++ = (FX_BYTE)((des_g) >> 16);
+ *scan_des++ = (FX_BYTE)((des_r) >> 16);
+ *scan_des++ = (FX_BYTE)((des_a) >> 16);
+ }
+ break;
+ default:
+ return;
+ }
+ }
+ }
+ int des_bottom = des_top + m_sizeY;
+ if(des_row + (int)scale_y >= des_bottom - 1) {
+ FX_LPBYTE scan_src = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ while (++des_row < des_bottom) {
+ FX_LPBYTE scan_des = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ FX_DWORD size = m_sizeX * des_Bpp;
+ FXSYS_memcpy32(scan_des, scan_src, size);
+ }
+ }
+ return;
+ }
+ int multiple = (int)FXSYS_ceil((FX_FLOAT)scale_y - 1);
+ if(multiple > 0) {
+ FX_LPBYTE scan_src = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ for (int i = 1; i <= multiple; i++) {
+ if(des_row + i >= m_startY + m_sizeY) {
+ return;
+ }
+ FX_LPBYTE scan_des = (FX_LPBYTE)pDeviceBitmap->GetScanline(des_row + i) + des_ScanOffet;
+ FX_DWORD size = m_sizeX * des_Bpp;
+ FXSYS_memcpy32(scan_des, scan_src, size);
+ }
+ }
+}
+void CCodec_ProgressiveDecoder::Resample(CFX_DIBitmap* pDeviceBitmap, FX_INT32 src_line, FX_LPBYTE src_scan, FXCodec_Format src_format)
+{
+ int src_top = m_clipBox.top;
+ int des_top = m_startY;
+ int src_hei = m_clipBox.Height();
+ int des_hei = m_sizeY;
+ if(src_line >= src_top) {
+ double scale_y = (double)des_hei / (double)src_hei;
+ int src_row = src_line - src_top;
+ int des_row = (int)(src_row * scale_y) + des_top;
+ if(des_row >= des_top + des_hei) {
+ return;
+ }
+ ReSampleScanline(pDeviceBitmap, des_row, m_pDecodeBuf, src_format);
+ if(scale_y > 1.0) {
+ ResampleVert(pDeviceBitmap, scale_y, des_row);
+ }
+ }
+}
+FXCODEC_STATUS CCodec_ProgressiveDecoder::GetFrames(FX_INT32& frames, IFX_Pause* pPause)
+{
+ if(!(m_status == FXCODEC_STATUS_FRAME_READY || m_status == FXCODEC_STATUS_FRAME_TOBECONTINUE)) {
+ return FXCODEC_STATUS_ERROR;
+ }
+ switch(m_imagType) {
+ case FXCODEC_IMAGE_BMP:
+ case FXCODEC_IMAGE_JPG:
+ case FXCODEC_IMAGE_PNG:
+ case FXCODEC_IMAGE_TIF:
+ frames = m_FrameNumber = 1;
+ return m_status = FXCODEC_STATUS_DECODE_READY;
+ case FXCODEC_IMAGE_GIF: {
+ ICodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule();
+ while (TRUE) {
+ FX_INT32 readResult = pGifModule->LoadFrameInfo(m_pGifContext, &m_FrameNumber);
+ while(readResult == 2) {
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_READ;
+ if(!GifReadMoreData(pGifModule, error_status)) {
+ return error_status;
+ }
+ if(pPause && pPause->NeedToPauseNow()) {
+ return m_status = FXCODEC_STATUS_FRAME_TOBECONTINUE;
+ }
+ readResult = pGifModule->LoadFrameInfo(m_pGifContext, &m_FrameNumber);
+ }
+ if(readResult == 1) {
+ frames = m_FrameNumber;
+ return m_status = FXCODEC_STATUS_DECODE_READY;
+ }
+ if(m_pGifContext != NULL) {
+ pGifModule->Finish(m_pGifContext);
+ m_pGifContext = NULL;
+ }
+ return m_status = FXCODEC_STATUS_ERROR;
+ }
+ }
+ break;
+ default:
+ ;
+ }
+ return FXCODEC_STATUS_ERROR;
+}
+FXCODEC_STATUS CCodec_ProgressiveDecoder::StartDecode(CFX_DIBitmap* pDIBitmap,
+ int start_x, int start_y, int size_x, int size_y,
+ FX_INT32 frames, FX_BOOL bInterpol)
+{
+ if(m_status != FXCODEC_STATUS_DECODE_READY) {
+ return FXCODEC_STATUS_ERROR;
+ }
+ if(pDIBitmap == NULL || pDIBitmap->GetBPP() < 8 ||
+ frames < 0 || frames >= m_FrameNumber) {
+ return FXCODEC_STATUS_ERR_PARAMS;
+ }
+ m_pDeviceBitmap = pDIBitmap;
+ if(m_clipBox.IsEmpty()) {
+ return FXCODEC_STATUS_ERR_PARAMS;
+ }
+ if(size_x <= 0 || size_x > 65535 || size_y <= 0 || size_y > 65535) {
+ return FXCODEC_STATUS_ERR_PARAMS;
+ }
+ FX_RECT device_rc = FX_RECT(start_x, start_y, start_x + size_x, start_y + size_y);
+ FX_INT32 out_range_x = device_rc.right - pDIBitmap->GetWidth();
+ FX_INT32 out_range_y = device_rc.bottom - pDIBitmap->GetHeight();
+ device_rc.Intersect(FX_RECT(0, 0, pDIBitmap->GetWidth(), pDIBitmap->GetHeight()));
+ if(device_rc.IsEmpty()) {
+ return FXCODEC_STATUS_ERR_PARAMS;
+ }
+ m_startX = device_rc.left;
+ m_startY = device_rc.top;
+ m_sizeX = device_rc.Width();
+ m_sizeY = device_rc.Height();
+ m_bInterpol = bInterpol;
+ m_FrameCur = 0;
+ if(start_x < 0 || out_range_x > 0) {
+ FX_FLOAT scaleX = (FX_FLOAT)m_clipBox.Width() / (FX_FLOAT)size_x;
+ if(start_x < 0) {
+ m_clipBox.left -= (FX_INT32)FXSYS_ceil((FX_FLOAT)start_x * scaleX);
+ }
+ if(out_range_x > 0) {
+ m_clipBox.right -= (FX_INT32)FXSYS_floor((FX_FLOAT)out_range_x * scaleX);
+ }
+ }
+ if(start_y < 0 || out_range_y > 0) {
+ FX_FLOAT scaleY = (FX_FLOAT)m_clipBox.Height() / (FX_FLOAT)size_y;
+ if(start_y < 0) {
+ m_clipBox.top -= (FX_INT32)FXSYS_ceil((FX_FLOAT)start_y * scaleY);
+ }
+ if(out_range_y > 0) {
+ m_clipBox.bottom -= (FX_INT32)FXSYS_floor((FX_FLOAT)out_range_y * scaleY);
+ }
+ }
+ if(m_clipBox.IsEmpty()) {
+ return FXCODEC_STATUS_ERR_PARAMS;
+ }
+ switch(m_imagType) {
+ case FXCODEC_IMAGE_JPG: {
+ ICodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule();
+ int down_scale = 1;
+ GetDownScale(down_scale);
+ FX_BOOL bStart = pJpegModule->StartScanline(m_pJpegContext, down_scale);
+ while(!bStart) {
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR;
+ if(!JpegReadMoreData(pJpegModule, error_status)) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = error_status;
+ }
+ bStart = pJpegModule->StartScanline(m_pJpegContext, down_scale);
+ }
+ int scanline_size = ( m_SrcWidth + down_scale - 1) / down_scale;
+ scanline_size = (scanline_size * m_SrcComponents + 3) / 4 * 4;
+ if(m_pDecodeBuf != NULL) {
+ FX_Free(m_pDecodeBuf);
+ m_pDecodeBuf = NULL;
+ }
+ m_pDecodeBuf = FX_Alloc(FX_BYTE, scanline_size);
+ if(m_pDecodeBuf == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ FXSYS_memset32(m_pDecodeBuf, 0, scanline_size);
+ m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, m_clipBox.Width(), m_bInterpol);
+ m_WeightVert.Calc(m_sizeY, m_clipBox.Height());
+ switch(m_SrcComponents) {
+ case 1:
+ m_SrcFormat = FXCodec_8bppGray;
+ break;
+ case 3:
+ m_SrcFormat = FXCodec_Rgb;
+ break;
+ case 4:
+ m_SrcFormat = FXCodec_Cmyk;
+ break;
+ }
+ GetTransMethod(pDIBitmap->GetFormat(), m_SrcFormat);
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ }
+ break;
+ case FXCODEC_IMAGE_PNG: {
+ ICodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule();
+ if(pPngModule == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ if(m_pPngContext != NULL) {
+ pPngModule->Finish(m_pPngContext);
+ m_pPngContext = NULL;
+ }
+ m_pPngContext = pPngModule->Start((void*)this);
+ if(m_pPngContext == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ m_offSet = 0;
+ switch(m_pDeviceBitmap->GetFormat()) {
+ case FXDIB_8bppMask:
+ case FXDIB_8bppRgb:
+ m_SrcComponents = 1;
+ m_SrcFormat = FXCodec_8bppGray;
+ break;
+ case FXDIB_Rgb:
+ m_SrcComponents = 3;
+ m_SrcFormat = FXCodec_Rgb;
+ break;
+ case FXDIB_Rgb32:
+ case FXDIB_Argb:
+ m_SrcComponents = 4;
+ m_SrcFormat = FXCodec_Argb;
+ break;
+ default: {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_PARAMS;
+ }
+ }
+ GetTransMethod(m_pDeviceBitmap->GetFormat(), m_SrcFormat);
+ int scanline_size = (m_SrcWidth * m_SrcComponents + 3) / 4 * 4;
+ if(m_pDecodeBuf != NULL) {
+ FX_Free(m_pDecodeBuf);
+ m_pDecodeBuf = NULL;
+ }
+ m_pDecodeBuf = FX_Alloc(FX_BYTE, scanline_size);
+ if(m_pDecodeBuf == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ FXSYS_memset32(m_pDecodeBuf, 0, scanline_size);
+ m_WeightHorzOO.Calc(m_sizeX, m_clipBox.Width(), m_bInterpol);
+ m_WeightVert.Calc(m_sizeY, m_clipBox.Height());
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ }
+ break;
+ case FXCODEC_IMAGE_GIF: {
+ ICodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule();
+ if(pGifModule == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ m_SrcFormat = FXCodec_8bppRgb;
+ GetTransMethod(m_pDeviceBitmap->GetFormat(), m_SrcFormat);
+ int scanline_size = (m_SrcWidth + 3) / 4 * 4;
+ if(m_pDecodeBuf != NULL) {
+ FX_Free(m_pDecodeBuf);
+ m_pDecodeBuf = NULL;
+ }
+ m_pDecodeBuf = FX_Alloc(FX_BYTE, scanline_size);
+ if(m_pDecodeBuf == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ FXSYS_memset32(m_pDecodeBuf, 0, scanline_size);
+ m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, m_clipBox.Width(), m_bInterpol);
+ m_WeightVert.Calc(m_sizeY, m_clipBox.Height());
+ m_FrameCur = frames;
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ }
+ break;
+ case FXCODEC_IMAGE_BMP: {
+ ICodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule();
+ if(pBmpModule == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ switch(m_SrcComponents) {
+ case 1:
+ m_SrcFormat = FXCodec_8bppRgb;
+ break;
+ case 3:
+ m_SrcFormat = FXCodec_Rgb;
+ break;
+ case 4:
+ m_SrcFormat = FXCodec_Rgb32;
+ break;
+ }
+ GetTransMethod(m_pDeviceBitmap->GetFormat(), m_SrcFormat);
+ m_ScanlineSize = (m_SrcWidth * m_SrcComponents + 3) / 4 * 4;
+ if(m_pDecodeBuf != NULL) {
+ FX_Free(m_pDecodeBuf);
+ m_pDecodeBuf = NULL;
+ }
+ m_pDecodeBuf = FX_Alloc(FX_BYTE, m_ScanlineSize);
+ if(m_pDecodeBuf == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ FXSYS_memset32(m_pDecodeBuf, 0, m_ScanlineSize);
+ m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, m_clipBox.Width(), m_bInterpol);
+ m_WeightVert.Calc(m_sizeY, m_clipBox.Height());
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ }
+ break;
+ case FXCODEC_IMAGE_TIF:
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ default:
+ break;
+ }
+ return FXCODEC_STATUS_ERROR;
+}
+FXCODEC_STATUS CCodec_ProgressiveDecoder::ContinueDecode(IFX_Pause* pPause)
+{
+ if(m_status != FXCODEC_STATUS_DECODE_TOBECONTINUE) {
+ return FXCODEC_STATUS_ERROR;
+ }
+ switch(m_imagType) {
+ case FXCODEC_IMAGE_JPG: {
+ ICodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule();
+ while(TRUE) {
+ FX_BOOL readRes = pJpegModule->ReadScanline(m_pJpegContext, m_pDecodeBuf);
+ while(!readRes) {
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH;
+ if(!JpegReadMoreData(pJpegModule, error_status)) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = error_status;
+ }
+ readRes = pJpegModule->ReadScanline(m_pJpegContext, m_pDecodeBuf);
+ }
+ if(m_SrcFormat == FXCodec_Rgb) {
+ int src_Bpp = (m_SrcFormat & 0xff) >> 3;
+ _RGB2BGR(m_pDecodeBuf + m_clipBox.left * src_Bpp, m_clipBox.Width());
+ }
+ if(m_SrcRow >= m_clipBox.bottom) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_DECODE_FINISH;
+ }
+ Resample(m_pDeviceBitmap, m_SrcRow, m_pDecodeBuf, m_SrcFormat);
+ m_SrcRow++;
+ if(pPause && pPause->NeedToPauseNow()) {
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ }
+ }
+ }
+ break;
+ case FXCODEC_IMAGE_PNG: {
+ ICodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule();
+ while (TRUE) {
+ FX_DWORD remain_size = (FX_DWORD)m_pFile->GetSize() - m_offSet;
+ FX_DWORD input_size = remain_size > FXCODEC_BLOCK_SIZE ? FXCODEC_BLOCK_SIZE : remain_size;
+ if(input_size == 0) {
+ if(m_pPngContext != NULL) {
+ pPngModule->Finish(m_pPngContext);
+ }
+ m_pPngContext = NULL;
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_DECODE_FINISH;
+ }
+ if(m_pSrcBuf != NULL && input_size > m_SrcSize) {
+ FX_Free(m_pSrcBuf);
+ m_pSrcBuf = FX_Alloc(FX_BYTE, input_size);
+ if(m_pSrcBuf == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ FXSYS_memset32(m_pSrcBuf, 0, input_size);
+ m_SrcSize = input_size;
+ }
+ FX_BOOL bResult = m_pFile->ReadBlock(m_pSrcBuf, m_offSet, input_size);
+ if(!bResult) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_READ;
+ }
+ m_offSet += input_size;
+ bResult = pPngModule->Input(m_pPngContext, m_pSrcBuf, input_size);
+ if(!bResult) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERROR;
+ }
+ if(pPause && pPause->NeedToPauseNow()) {
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ }
+ }
+ }
+ break;
+ case FXCODEC_IMAGE_GIF: {
+ ICodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule();
+ while(TRUE) {
+ FX_INT32 readRes = pGifModule->LoadFrame(m_pGifContext, m_FrameCur);
+ while(readRes == 2) {
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH;
+ if(!GifReadMoreData(pGifModule, error_status)) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = error_status;
+ }
+ if(pPause && pPause->NeedToPauseNow()) {
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ }
+ readRes = pGifModule->LoadFrame(m_pGifContext, m_FrameCur);
+ }
+ if(readRes == 1) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_DECODE_FINISH;
+ }
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERROR;
+ }
+ }
+ break;
+ case FXCODEC_IMAGE_BMP: {
+ ICodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule();
+ while(TRUE) {
+ FX_INT32 readRes = pBmpModule->LoadImage(m_pBmpContext);
+ while(readRes == 2) {
+ FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH;
+ if(!BmpReadMoreData(pBmpModule, error_status)) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = error_status;
+ }
+ if(pPause && pPause->NeedToPauseNow()) {
+ return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE;
+ }
+ readRes = pBmpModule->LoadImage(m_pBmpContext);
+ }
+ if(readRes == 1) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_DECODE_FINISH;
+ }
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERROR;
+ }
+ }
+ break;
+ case FXCODEC_IMAGE_TIF: {
+ ICodec_TiffModule* pTiffModule = m_pCodecMgr->GetTiffModule();
+ FX_BOOL ret = FALSE;
+ if(m_pDeviceBitmap->GetBPP() == 32 &&
+ m_pDeviceBitmap->GetWidth() == m_SrcWidth && m_SrcWidth == m_sizeX &&
+ m_pDeviceBitmap->GetHeight() == m_SrcHeight && m_SrcHeight == m_sizeY &&
+ m_startX == 0 && m_startY == 0 && m_clipBox.left == 0 && m_clipBox.top == 0
+ && m_clipBox.right == m_SrcWidth && m_clipBox.bottom == m_SrcHeight) {
+ ret = pTiffModule->Decode(m_pTiffContext, m_pDeviceBitmap);
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ if(!ret) {
+ return m_status = FXCODEC_STATUS_ERROR;
+ }
+ return m_status = FXCODEC_STATUS_DECODE_FINISH;
+ } else {
+ CFX_DIBitmap* pDIBitmap = FX_NEW CFX_DIBitmap;
+ if(pDIBitmap == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ pDIBitmap->Create(m_SrcWidth, m_SrcHeight, FXDIB_Argb);
+ if(pDIBitmap->GetBuffer() == NULL) {
+ delete pDIBitmap;
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ ret = pTiffModule->Decode(m_pTiffContext, pDIBitmap);
+ if(!ret) {
+ delete pDIBitmap;
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERROR;
+ }
+ CFX_DIBitmap* pClipBitmap =
+ (m_clipBox.left == 0 &&
+ m_clipBox.top == 0 &&
+ m_clipBox.right == m_SrcWidth &&
+ m_clipBox.bottom == m_SrcHeight) ? pDIBitmap : pDIBitmap->Clone(&m_clipBox);
+ if(pDIBitmap != pClipBitmap) {
+ delete pDIBitmap;
+ }
+ if(pClipBitmap == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ CFX_DIBitmap* pFormatBitmap = NULL;
+ switch(m_pDeviceBitmap->GetFormat()) {
+ case FXDIB_8bppRgb:
+ pFormatBitmap = FX_NEW CFX_DIBitmap;
+ if(pFormatBitmap == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), FXDIB_8bppRgb);
+ break;
+ case FXDIB_8bppMask:
+ pFormatBitmap = FX_NEW CFX_DIBitmap;
+ if(pFormatBitmap == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), FXDIB_8bppMask);
+ break;
+ case FXDIB_Rgb:
+ pFormatBitmap = FX_NEW CFX_DIBitmap;
+ if(pFormatBitmap == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), FXDIB_Rgb);
+ break;
+ case FXDIB_Rgb32:
+ pFormatBitmap = FX_NEW CFX_DIBitmap;
+ if(pFormatBitmap == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), FXDIB_Rgb32);
+ break;
+ case FXDIB_Argb:
+ pFormatBitmap = pClipBitmap;
+ break;
+ default:
+ ;
+ }
+ switch(m_pDeviceBitmap->GetFormat()) {
+ case FXDIB_8bppRgb:
+ case FXDIB_8bppMask: {
+ for (FX_INT32 row = 0; row < pClipBitmap->GetHeight(); row++) {
+ FX_LPBYTE src_line = (FX_LPBYTE)pClipBitmap->GetScanline(row);
+ FX_LPBYTE des_line = (FX_LPBYTE)pFormatBitmap->GetScanline(row);
+ for (FX_INT32 col = 0; col < pClipBitmap->GetWidth(); col++) {
+ FX_BYTE _a = 255 - src_line[3];
+ FX_BYTE b = (src_line[0] * src_line[3] + 0xFF * _a) / 255;
+ FX_BYTE g = (src_line[1] * src_line[3] + 0xFF * _a) / 255;
+ FX_BYTE r = (src_line[2] * src_line[3] + 0xFF * _a) / 255;
+ *des_line++ = FXRGB2GRAY(r, g, b);
+ src_line += 4;
+ }
+ }
+ }
+ break;
+ case FXDIB_Rgb:
+ case FXDIB_Rgb32: {
+ FX_INT32 desBpp = (m_pDeviceBitmap->GetFormat() == FXDIB_Rgb) ? 3 : 4;
+ for (FX_INT32 row = 0; row < pClipBitmap->GetHeight(); row++) {
+ FX_LPBYTE src_line = (FX_LPBYTE)pClipBitmap->GetScanline(row);
+ FX_LPBYTE des_line = (FX_LPBYTE)pFormatBitmap->GetScanline(row);
+ for (FX_INT32 col = 0; col < pClipBitmap->GetWidth(); col++) {
+ FX_BYTE _a = 255 - src_line[3];
+ FX_BYTE b = (src_line[0] * src_line[3] + 0xFF * _a) / 255;
+ FX_BYTE g = (src_line[1] * src_line[3] + 0xFF * _a) / 255;
+ FX_BYTE r = (src_line[2] * src_line[3] + 0xFF * _a) / 255;
+ *des_line++ = b;
+ *des_line++ = g;
+ *des_line++ = r;
+ des_line += desBpp - 3;
+ src_line += 4;
+ }
+ }
+ }
+ break;
+ default:
+ ;
+ }
+ if(pClipBitmap != pFormatBitmap) {
+ delete pClipBitmap;
+ }
+ if(pFormatBitmap == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ CFX_DIBitmap* pStrechBitmap = pFormatBitmap->StretchTo(m_sizeX, m_sizeY, m_bInterpol ? FXDIB_INTERPOL : FXDIB_DOWNSAMPLE);
+ delete pFormatBitmap;
+ pFormatBitmap = NULL;
+ if(pStrechBitmap == NULL) {
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_ERR_MEMORY;
+ }
+ m_pDeviceBitmap->TransferBitmap(m_startX, m_startY, m_sizeX, m_sizeY, pStrechBitmap, 0, 0);
+ delete pStrechBitmap;
+ pStrechBitmap = NULL;
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_DECODE_FINISH;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ return FXCODEC_STATUS_ERROR;
+}
+ICodec_ProgressiveDecoder* CCodec_ModuleMgr::CreateProgressiveDecoder()
+{
+ return FX_NEW CCodec_ProgressiveDecoder(this);
+}
diff --git a/core/src/fxcodec/codec/fx_codec_progress.h b/core/src/fxcodec/codec/fx_codec_progress.h
new file mode 100644
index 0000000..6a618e2
--- /dev/null
+++ b/core/src/fxcodec/codec/fx_codec_progress.h
@@ -0,0 +1,206 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef _FX_CODEC_PROGRESS_H_
+#define _FX_CODEC_PROGRESS_H_
+#define FXCODEC_BLOCK_SIZE 4096
+#define FXCODEC_PNG_GAMMA 2.2
+#if _FX_OS_ == _FX_MACOSX_ || _FX_OS_ == _FX_IOS_
+# undef FXCODEC_PNG_GAMMA
+# define FXCODEC_PNG_GAMMA 1.7
+#endif
+struct PixelWeight {
+ int m_SrcStart;
+ int m_SrcEnd;
+ int m_Weights[1];
+};
+class CFXCODEC_WeightTable : public CFX_Object
+{
+public:
+ CFXCODEC_WeightTable()
+ {
+ m_pWeightTables = NULL;
+ }
+ ~CFXCODEC_WeightTable()
+ {
+ if(m_pWeightTables != NULL) {
+ FX_Free(m_pWeightTables);
+ }
+ }
+
+ void Calc(int dest_len, int dest_min, int dest_max, int src_len, int src_min, int src_max, FX_BOOL bInterpol);
+ PixelWeight* GetPixelWeight(int pixel)
+ {
+ return (PixelWeight*)(m_pWeightTables + (pixel - m_DestMin) * m_ItemSize);
+ }
+
+ int m_DestMin, m_ItemSize;
+ FX_LPBYTE m_pWeightTables;
+};
+class CFXCODEC_HorzTable : public CFX_Object
+{
+public:
+ CFXCODEC_HorzTable()
+ {
+ m_pWeightTables = NULL;
+ }
+ ~CFXCODEC_HorzTable()
+ {
+ if(m_pWeightTables != NULL) {
+ FX_Free(m_pWeightTables);
+ }
+ }
+
+ void Calc(int dest_len, int src_len, FX_BOOL bInterpol);
+ PixelWeight* GetPixelWeight(int pixel)
+ {
+ return (PixelWeight*)(m_pWeightTables + pixel * m_ItemSize);
+ }
+
+ int m_ItemSize;
+ FX_LPBYTE m_pWeightTables;
+};
+class CFXCODEC_VertTable : public CFX_Object
+{
+public:
+ CFXCODEC_VertTable()
+ {
+ m_pWeightTables = NULL;
+ }
+ ~CFXCODEC_VertTable()
+ {
+ if(m_pWeightTables != NULL) {
+ FX_Free(m_pWeightTables);
+ }
+ }
+ void Calc(int dest_len, int src_len);
+ PixelWeight* GetPixelWeight(int pixel)
+ {
+ return (PixelWeight*)(m_pWeightTables + pixel * m_ItemSize);
+ }
+ int m_ItemSize;
+ FX_LPBYTE m_pWeightTables;
+};
+enum FXCodec_Format {
+ FXCodec_Invalid = 0,
+ FXCodec_1bppGray = 0x101,
+ FXCodec_1bppRgb = 0x001,
+ FXCodec_8bppGray = 0x108,
+ FXCodec_8bppRgb = 0x008,
+ FXCodec_Rgb = 0x018,
+ FXCodec_Rgb32 = 0x020,
+ FXCodec_Argb = 0x220,
+ FXCodec_Cmyk = 0x120
+};
+class CCodec_ProgressiveDecoder : public ICodec_ProgressiveDecoder
+{
+public:
+ CCodec_ProgressiveDecoder(CCodec_ModuleMgr* pCodecMgr);
+ virtual ~CCodec_ProgressiveDecoder();
+
+public:
+ virtual FXCODEC_STATUS LoadImageInfo(IFX_FileRead* pFile, FXCODEC_IMAGE_TYPE imageType, CFX_DIBAttribute* pAttribute);
+
+ virtual FXCODEC_IMAGE_TYPE GetType()
+ {
+ return m_imagType;
+ }
+ virtual FX_INT32 GetWidth()
+ {
+ return m_SrcWidth;
+ }
+ virtual FX_INT32 GetHeight()
+ {
+ return m_SrcHeight;
+ }
+ virtual FX_INT32 GetNumComponents()
+ {
+ return m_SrcComponents;
+ }
+ virtual FX_INT32 GetBPC()
+ {
+ return m_SrcBPC;
+ }
+ virtual void SetClipBox(FX_RECT* clip);
+ virtual FXCODEC_STATUS GetFrames(FX_INT32& frames, IFX_Pause* pPause);
+
+ virtual FXCODEC_STATUS StartDecode(CFX_DIBitmap* pDIBitmap,
+ int start_x, int start_y, int size_x, int size_y,
+ FX_INT32 frames, FX_BOOL bInterpol);
+
+ virtual FXCODEC_STATUS ContinueDecode(IFX_Pause* pPause);
+
+protected:
+ FX_BOOL DetectImageType(FXCODEC_IMAGE_TYPE imageType, CFX_DIBAttribute* pAttribute = NULL);
+ void GetDownScale(int& down_scale);
+ void GetTransMethod(FXDIB_Format des_format, FXCodec_Format src_format);
+ void ReSampleScanline(CFX_DIBitmap* pDeviceBitmap, FX_INT32 des_line, FX_LPBYTE src_scan, FXCodec_Format src_format);
+ void Resample(CFX_DIBitmap* pDeviceBitmap, FX_INT32 src_line, FX_LPBYTE src_scan, FXCodec_Format src_format);
+ void ResampleVert(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row);
+ FX_BOOL JpegReadMoreData(ICodec_JpegModule* pJpegModule, FXCODEC_STATUS& err_status);
+ static FX_BOOL PngReadHeaderFunc(void* pModule, int width, int height, int bpc, int pass, int* color_type, double* gamma);
+ static FX_BOOL PngAskScanlineBufFunc(void* pModule, int line, FX_LPBYTE& src_buf);
+ static void PngFillScanlineBufCompletedFunc(void* pModule, int pass, int line);
+ void PngOneOneMapResampleHorz(CFX_DIBitmap* pDeviceBitmap, FX_INT32 des_line, FX_LPBYTE src_scan, FXCodec_Format src_format);
+
+ FX_BOOL GifReadMoreData(ICodec_GifModule* pGifModule, FXCODEC_STATUS& err_status);
+ static void GifRecordCurrentPositionCallback(void* pModule, FX_DWORD& cur_pos);
+ static FX_LPBYTE GifAskLocalPaletteBufCallback(void* pModule, FX_INT32 frame_num, FX_INT32 pal_size);
+ static FX_BOOL GifInputRecordPositionBufCallback(void* pModule, FX_DWORD rcd_pos, const FX_RECT& img_rc,
+ FX_INT32 pal_num, void* pal_ptr,
+ FX_INT32 delay_time, FX_BOOL user_input,
+ FX_INT32 trans_index, FX_INT32 disposal_method, FX_BOOL interlace);
+ static void GifReadScanlineCallback(void* pModule, FX_INT32 row_num, FX_LPBYTE row_buf);
+ void GifDoubleLineResampleVert(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row);
+ FX_BOOL BmpReadMoreData(ICodec_BmpModule* pBmpModule, FXCODEC_STATUS& err_status);
+ static FX_BOOL BmpInputImagePositionBufCallback(void* pModule, FX_DWORD rcd_pos);
+ static void BmpReadScanlineCallback(void* pModule, FX_INT32 row_num, FX_LPBYTE row_buf);
+ void ResampleVertBT(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row);
+public:
+ IFX_FileRead* m_pFile;
+ CCodec_ModuleMgr* m_pCodecMgr;
+ FX_LPVOID m_pJpegContext;
+ FX_LPVOID m_pPngContext;
+ FX_LPVOID m_pGifContext;
+ FX_LPVOID m_pBmpContext;
+ FX_LPVOID m_pTiffContext;
+ FXCODEC_IMAGE_TYPE m_imagType;
+ FX_DWORD m_offSet;
+ FX_LPBYTE m_pSrcBuf;
+ FX_DWORD m_SrcSize;
+ FX_LPBYTE m_pDecodeBuf;
+ int m_ScanlineSize;
+ CFX_DIBitmap* m_pDeviceBitmap;
+ FX_BOOL m_bInterpol;
+ CFXCODEC_WeightTable m_WeightHorz;
+ CFXCODEC_VertTable m_WeightVert;
+ CFXCODEC_HorzTable m_WeightHorzOO;
+ int m_SrcWidth;
+ int m_SrcHeight;
+ int m_SrcComponents;
+ int m_SrcBPC;
+ FX_RECT m_clipBox;
+ int m_startX;
+ int m_startY;
+ int m_sizeX;
+ int m_sizeY;
+ int m_TransMethod;
+ FX_ARGB* m_pSrcPalette;
+ int m_SrcPaletteNumber;
+ int m_SrcRow;
+ FXCodec_Format m_SrcFormat;
+ int m_SrcPassNumber;
+ int m_FrameNumber;
+ int m_FrameCur;
+ int m_GifBgIndex;
+ FX_LPBYTE m_pGifPalette;
+ FX_INT32 m_GifPltNumber;
+ int m_GifTransIndex;
+ FX_RECT m_GifFrameRect;
+ FX_BOOL m_BmpIsTopBottom;
+ FXCODEC_STATUS m_status;
+};
+#endif
diff --git a/core/src/fxcodec/codec/fx_codec_tiff.cpp b/core/src/fxcodec/codec/fx_codec_tiff.cpp
new file mode 100644
index 0000000..c90de7a
--- /dev/null
+++ b/core/src/fxcodec/codec/fx_codec_tiff.cpp
@@ -0,0 +1,532 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../../include/fxcodec/fx_codec.h"
+#include "../../../include/fxge/fx_dib.h"
+#include "codec_int.h"
+extern "C" {
+#include "../fx_tiff/include/fx_tiffiop.h"
+}
+#if !defined(_FPDFAPI_MINI_)
+void* IccLib_CreateTransform_sRGB(const unsigned char* pProfileData, unsigned int dwProfileSize, int nComponents, int intent, FX_DWORD dwSrcFormat = Icc_FORMAT_DEFAULT);
+void IccLib_TranslateImage(void* pTransform, unsigned char* pDest, const unsigned char* pSrc, int pixels);
+void IccLib_DestroyTransform(void* pTransform);
+#endif
+class CCodec_TiffContext : public CFX_Object
+{
+public:
+ CCodec_TiffContext();
+ ~CCodec_TiffContext();
+
+ FX_BOOL InitDecoder(IFX_FileRead* file_ptr);
+ void GetFrames(FX_INT32& frames);
+ FX_BOOL LoadFrameInfo(FX_INT32 frame, FX_DWORD& width, FX_DWORD& height, FX_DWORD& comps, FX_DWORD& bpc, CFX_DIBAttribute* pAttribute);
+ FX_BOOL Decode(CFX_DIBitmap* pDIBitmap);
+
+ union {
+ IFX_FileRead* in;
+ IFX_FileStream* out;
+ } io;
+
+ FX_DWORD offset;
+
+ TIFF* tif_ctx;
+ void* icc_ctx;
+ FX_INT32 frame_num;
+ FX_INT32 frame_cur;
+ FX_BOOL isDecoder;
+private:
+ FX_BOOL isSupport(CFX_DIBitmap* pDIBitmap);
+ void SetPalette(CFX_DIBitmap* pDIBitmap, FX_UINT16 bps);
+ FX_BOOL Decode1bppRGB(CFX_DIBitmap* pDIBitmap, FX_INT32 height, FX_INT32 width, FX_UINT16 bps, FX_UINT16 spp);
+ FX_BOOL Decode8bppRGB(CFX_DIBitmap* pDIBitmap, FX_INT32 height, FX_INT32 width, FX_UINT16 bps, FX_UINT16 spp);
+ FX_BOOL Decode24bppRGB(CFX_DIBitmap* pDIBitmap, FX_INT32 height, FX_INT32 width, FX_UINT16 bps, FX_UINT16 spp);
+};
+CCodec_TiffContext::CCodec_TiffContext()
+{
+ offset = 0;
+ frame_num = 0;
+ frame_cur = 0;
+ io.in = NULL;
+ tif_ctx = NULL;
+ icc_ctx = NULL;
+ isDecoder = TRUE;
+}
+CCodec_TiffContext::~CCodec_TiffContext()
+{
+#if !defined(_FPDFAPI_MINI_)
+ if(icc_ctx) {
+ IccLib_DestroyTransform(icc_ctx);
+ icc_ctx = NULL;
+ }
+#endif
+ if(tif_ctx) {
+ TIFFClose(tif_ctx);
+ }
+}
+static tsize_t _tiff_read(thandle_t context, tdata_t buf, tsize_t length)
+{
+ CCodec_TiffContext* pTiffContext = (CCodec_TiffContext*)context;
+ FX_BOOL ret = FALSE;
+ if(pTiffContext->isDecoder) {
+ ret = pTiffContext->io.in->ReadBlock(buf, pTiffContext->offset, length);
+ } else {
+ ret = pTiffContext->io.out->ReadBlock(buf, pTiffContext->offset, length);
+ }
+ if(!ret) {
+ return 0;
+ }
+ pTiffContext->offset += (FX_DWORD)length;
+ return length;
+}
+static tsize_t _tiff_write(thandle_t context, tdata_t buf, tsize_t length)
+{
+ CCodec_TiffContext* pTiffContext = (CCodec_TiffContext*)context;
+ ASSERT(!pTiffContext->isDecoder);
+ if(!pTiffContext->io.out->WriteBlock(buf, pTiffContext->offset, length)) {
+ return 0;
+ }
+ pTiffContext->offset += (FX_DWORD)length;
+ return length;
+}
+static toff_t _tiff_seek(thandle_t context, toff_t offset, int whence)
+{
+ CCodec_TiffContext* pTiffContext = (CCodec_TiffContext*)context;
+ switch(whence) {
+ case 0:
+ pTiffContext->offset = (FX_DWORD)offset;
+ break;
+ case 1:
+ pTiffContext->offset += (FX_DWORD)offset;
+ break;
+ case 2:
+ if(pTiffContext->isDecoder) {
+ if(pTiffContext->io.in->GetSize() < (FX_FILESIZE)offset) {
+ return -1;
+ }
+ pTiffContext->offset = (FX_DWORD)(pTiffContext->io.in->GetSize() - offset);
+ } else {
+ if(pTiffContext->io.out->GetSize() < (FX_FILESIZE)offset) {
+ return -1;
+ }
+ pTiffContext->offset = (FX_DWORD)(pTiffContext->io.out->GetSize() - offset);
+ }
+ break;
+ default:
+ return -1;
+ }
+ ASSERT(pTiffContext->isDecoder ?
+ (pTiffContext->offset <= (FX_DWORD)pTiffContext->io.in->GetSize()) :
+ TRUE);
+ return pTiffContext->offset;
+}
+static int _tiff_close(thandle_t context)
+{
+ return 0;
+}
+static toff_t _tiff_get_size(thandle_t context)
+{
+ CCodec_TiffContext* pTiffContext = (CCodec_TiffContext*)context;
+ return pTiffContext->isDecoder ?
+ (toff_t)pTiffContext->io.in->GetSize() :
+ (toff_t)pTiffContext->io.out->GetSize();
+}
+static int _tiff_map(thandle_t context, tdata_t*, toff_t*)
+{
+ return 0;
+}
+static void _tiff_unmap(thandle_t context, tdata_t, toff_t) {}
+TIFF* _tiff_open(void* context, const char* mode)
+{
+ TIFF* tif = TIFFClientOpen("Tiff Image", mode,
+ (thandle_t)context,
+ _tiff_read, _tiff_write, _tiff_seek, _tiff_close,
+ _tiff_get_size, _tiff_map, _tiff_unmap);
+ if(tif) {
+ tif->tif_fd = (int)(FX_INTPTR)context;
+ }
+ return tif;
+}
+void* _TIFFmalloc(tmsize_t size)
+{
+ return FXMEM_DefaultAlloc(size, 0);
+}
+void _TIFFfree(void* ptr)
+{
+ FXMEM_DefaultFree(ptr, 0);
+}
+void* _TIFFrealloc(void* ptr, tmsize_t size)
+{
+ return FXMEM_DefaultRealloc(ptr, size, 0);
+}
+void _TIFFmemset(void* ptr, int val, tmsize_t size)
+{
+ FXSYS_memset8(ptr, val, (size_t)size);
+}
+void _TIFFmemcpy(void* des, const void* src, tmsize_t size)
+{
+ FXSYS_memcpy32(des, src, (size_t)size);
+}
+int _TIFFmemcmp(const void* ptr1, const void* ptr2, tmsize_t size)
+{
+ return FXSYS_memcmp32(ptr1, ptr2, (size_t)size);
+}
+static void _tiff_warning_ext(thandle_t context, const char* module, const char* fmt, va_list ap)
+{
+ if(module != NULL) {
+ }
+}
+TIFFErrorHandlerExt _TIFFwarningHandlerExt = _tiff_warning_ext;
+static void _tiff_error_ext(thandle_t context, const char* module, const char* fmt, va_list ap)
+{
+ if(module != NULL) {
+ }
+}
+TIFFErrorHandlerExt _TIFFerrorHandlerExt = _tiff_error_ext;
+int TIFFCmyk2Rgb(thandle_t context, uint8 c, uint8 m, uint8 y, uint8 k, uint8* r, uint8* g, uint8* b)
+{
+ if(context == NULL) {
+ return 0;
+ }
+ CCodec_TiffContext* p = (CCodec_TiffContext*)context;
+#if !defined(_FPDFAPI_MINI_)
+ if(p->icc_ctx) {
+ unsigned char cmyk[4], bgr[3];
+ cmyk[0] = c, cmyk[1] = m, cmyk[2] = y, cmyk[3] = k;
+ IccLib_TranslateImage(p->icc_ctx, bgr, cmyk, 1);
+ *r = bgr[2], *g = bgr[1], *b = bgr[0];
+ } else {
+#endif
+ AdobeCMYK_to_sRGB1(c, m, y, k, *r, *g, *b);
+#if !defined(_FPDFAPI_MINI_)
+ }
+#endif
+ return 1;
+}
+FX_BOOL CCodec_TiffContext::InitDecoder(IFX_FileRead* file_ptr)
+{
+ io.in = file_ptr;
+ tif_ctx = _tiff_open(this, "r");
+ if(tif_ctx == NULL) {
+ return FALSE;
+ }
+ return TRUE;
+}
+void CCodec_TiffContext::GetFrames(FX_INT32& frames)
+{
+ frames = frame_num = TIFFNumberOfDirectories(tif_ctx);
+}
+#define TIFF_EXIF_GETINFO(key, T, tag) {\
+ T val = (T)0;\
+ TIFFGetField(tif_ctx,tag,&val);\
+ if (val) {\
+ (key) = FX_Alloc(FX_BYTE,sizeof(T));\
+ if ((key)) {\
+ T* ptr = (T*)(key);\
+ *ptr = val;\
+ pExif->m_TagVal.SetAt(tag,(key));}}}\
+ (key) = NULL;
+#define TIFF_EXIF_GETSTRINGINFO(key, tag) {\
+ FX_DWORD size = 0;\
+ FX_LPBYTE buf = NULL;\
+ TIFFGetField(tif_ctx,tag,&size, &buf);\
+ if (size && buf) {\
+ (key) = FX_Alloc(FX_BYTE,size);\
+ if ((key)) {\
+ FXSYS_memcpy32((key),buf,size);\
+ pExif->m_TagVal.SetAt(tag,(key));}}}\
+ (key) = NULL;
+template <class T>
+static FX_BOOL Tiff_Exif_GetInfo(TIFF* tif_ctx, ttag_t tag, CFX_DIBAttributeExif* pExif)
+{
+ FX_LPBYTE key = NULL;
+ T val = (T)0;
+ TIFFGetField(tif_ctx, tag, &val);
+ if (val) {
+ (key) = FX_Alloc(FX_BYTE, sizeof(T));
+ if ((key) == NULL) {
+ return FALSE;
+ }
+ T* ptr = (T*)(key);
+ *ptr = val;
+ pExif->m_TagVal.SetAt(tag, (key));
+ return TRUE;
+ }
+ return FALSE;
+}
+static void Tiff_Exif_GetStringInfo(TIFF* tif_ctx, ttag_t tag, CFX_DIBAttributeExif* pExif)
+{
+ FX_LPSTR buf = NULL;
+ FX_LPBYTE key = NULL;
+ TIFFGetField(tif_ctx, tag, &buf);
+ if (buf) {
+ FX_INT32 size = (FX_INT32)FXSYS_strlen(buf);
+ (key) = FX_Alloc(FX_BYTE, size + 1);
+ if ((key) == NULL) {
+ return;
+ }
+ FXSYS_memcpy32((key), buf, size);
+ key[size] = 0;
+ pExif->m_TagVal.SetAt(tag, (key));
+ }
+}
+FX_BOOL CCodec_TiffContext::LoadFrameInfo(FX_INT32 frame, FX_DWORD& width, FX_DWORD& height, FX_DWORD& comps, FX_DWORD& bpc, CFX_DIBAttribute* pAttribute)
+{
+ if (!TIFFSetDirectory(tif_ctx, (uint16)frame)) {
+ return FALSE;
+ }
+ FX_WORD tif_cs;
+ FX_DWORD tif_icc_size = 0;
+ FX_LPBYTE tif_icc_buf = NULL;
+ FX_WORD tif_bpc = 0;
+ FX_WORD tif_cps;
+ FX_DWORD tif_rps;
+ width = height = comps = 0;
+ TIFFGetField(tif_ctx, TIFFTAG_IMAGEWIDTH, &width);
+ TIFFGetField(tif_ctx, TIFFTAG_IMAGELENGTH, &height);
+ TIFFGetField(tif_ctx, TIFFTAG_SAMPLESPERPIXEL, &comps);
+ TIFFGetField(tif_ctx, TIFFTAG_BITSPERSAMPLE, &tif_bpc);
+ TIFFGetField(tif_ctx, TIFFTAG_PHOTOMETRIC, &tif_cs);
+ TIFFGetField(tif_ctx, TIFFTAG_COMPRESSION, &tif_cps);
+ TIFFGetField(tif_ctx, TIFFTAG_ROWSPERSTRIP, &tif_rps);
+ TIFFGetField(tif_ctx, TIFFTAG_ICCPROFILE, &tif_icc_size, &tif_icc_buf);
+ if (pAttribute) {
+ pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_INCH;
+ if (TIFFGetField(tif_ctx, TIFFTAG_RESOLUTIONUNIT, &pAttribute->m_wDPIUnit)) {
+ pAttribute->m_wDPIUnit -= 1;
+ }
+ CFX_DIBAttributeExif* pExif = (CFX_DIBAttributeExif*)pAttribute->m_pExif;
+ pExif->clear();
+ Tiff_Exif_GetInfo<FX_WORD>(tif_ctx, TIFFTAG_ORIENTATION, pExif);
+ if (Tiff_Exif_GetInfo<FX_FLOAT>(tif_ctx, TIFFTAG_XRESOLUTION, pExif)) {
+ FX_FLOAT fDpi = 0;
+ pExif->GetInfo(TIFFTAG_XRESOLUTION, &fDpi);
+ pAttribute->m_nXDPI = (FX_INT32)(fDpi + 0.5f);
+ }
+ if (Tiff_Exif_GetInfo<FX_FLOAT>(tif_ctx, TIFFTAG_YRESOLUTION, pExif)) {
+ FX_FLOAT fDpi = 0;
+ pExif->GetInfo(TIFFTAG_YRESOLUTION, &fDpi);
+ pAttribute->m_nYDPI = (FX_INT32)(fDpi + 0.5f);
+ }
+ Tiff_Exif_GetStringInfo(tif_ctx, TIFFTAG_IMAGEDESCRIPTION, pExif);
+ Tiff_Exif_GetStringInfo(tif_ctx, TIFFTAG_MAKE, pExif);
+ Tiff_Exif_GetStringInfo(tif_ctx, TIFFTAG_MODEL, pExif);
+ }
+ bpc = tif_bpc;
+ if(tif_rps > height) {
+ TIFFSetField(tif_ctx, TIFFTAG_ROWSPERSTRIP, tif_rps = height);
+ }
+ return TRUE;
+}
+void _TiffBGRA2RGBA(FX_LPBYTE pBuf, FX_INT32 pixel, FX_INT32 spp)
+{
+ register FX_BYTE tmp;
+ for (FX_INT32 n = 0; n < pixel; n++) {
+ tmp = pBuf[0];
+ pBuf[0] = pBuf[2];
+ pBuf[2] = tmp;
+ pBuf += spp;
+ }
+}
+FX_BOOL CCodec_TiffContext::isSupport(CFX_DIBitmap* pDIBitmap)
+{
+ if (TIFFIsTiled(tif_ctx)) {
+ return FALSE;
+ }
+ FX_UINT16 photometric;
+ if (!TIFFGetField(tif_ctx, TIFFTAG_PHOTOMETRIC, &photometric)) {
+ return FALSE;
+ }
+ switch (pDIBitmap->GetBPP()) {
+ case 1:
+ case 8:
+ if (photometric != PHOTOMETRIC_PALETTE) {
+ return FALSE;
+ }
+ break;
+ case 24:
+ if (photometric != PHOTOMETRIC_RGB) {
+ return FALSE;
+ }
+ break;
+ default:
+ return FALSE;
+ }
+ FX_UINT16 planarconfig;
+ if (!TIFFGetFieldDefaulted(tif_ctx, TIFFTAG_PLANARCONFIG, &planarconfig)) {
+ return FALSE;
+ }
+ if (planarconfig == PLANARCONFIG_SEPARATE) {
+ return FALSE;
+ }
+ return TRUE;
+}
+void CCodec_TiffContext::SetPalette(CFX_DIBitmap* pDIBitmap, FX_UINT16 bps)
+{
+ FX_UINT16 *red_orig, *green_orig, *blue_orig;
+ TIFFGetField(tif_ctx, TIFFTAG_COLORMAP, &red_orig, &green_orig, &blue_orig);
+ for (FX_INT32 i = (1L << bps) - 1; i >= 0; i--) {
+#define CVT(x) ((FX_UINT16)((x)>>8))
+ red_orig[i] = CVT(red_orig[i]);
+ green_orig[i] = CVT(green_orig[i]);
+ blue_orig[i] = CVT(blue_orig[i]);
+#undef CVT
+ }
+ FX_INT32 len = 1 << bps;
+ for(FX_INT32 index = 0; index < len; index++) {
+ FX_DWORD r = red_orig[index] & 0xFF;
+ FX_DWORD g = green_orig[index] & 0xFF;
+ FX_DWORD b = blue_orig[index] & 0xFF;
+ FX_DWORD color = (FX_UINT32)b | ((FX_UINT32)g << 8) | ((FX_UINT32)r << 16) | (((uint32)0xffL) << 24);
+ pDIBitmap->SetPaletteEntry(index, color);
+ }
+}
+FX_BOOL CCodec_TiffContext::Decode1bppRGB(CFX_DIBitmap* pDIBitmap, FX_INT32 height, FX_INT32 width, FX_UINT16 bps, FX_UINT16 spp)
+{
+ if (pDIBitmap->GetBPP() != 1 || spp != 1 || bps != 1 || !isSupport(pDIBitmap)) {
+ return FALSE;
+ }
+ SetPalette(pDIBitmap, bps);
+ FX_INT32 size = (FX_INT32)TIFFScanlineSize(tif_ctx);
+ FX_LPBYTE buf = (FX_LPBYTE)_TIFFmalloc(size);
+ if (buf == NULL) {
+ TIFFError(TIFFFileName(tif_ctx), "No space for scanline buffer");
+ return FALSE;
+ }
+ FX_LPBYTE bitMapbuffer = (FX_LPBYTE)pDIBitmap->GetBuffer();
+ FX_DWORD pitch = pDIBitmap->GetPitch();
+ for(FX_INT32 row = 0; row < height; row++) {
+ TIFFReadScanline(tif_ctx, buf, row, 0);
+ for(FX_INT32 j = 0; j < size; j++) {
+ bitMapbuffer[row * pitch + j] = buf[j];
+ }
+ }
+ _TIFFfree(buf);
+ return TRUE;
+}
+FX_BOOL CCodec_TiffContext::Decode8bppRGB(CFX_DIBitmap* pDIBitmap, FX_INT32 height, FX_INT32 width, FX_UINT16 bps, FX_UINT16 spp)
+{
+ if (pDIBitmap->GetBPP() != 8 || spp != 1 || (bps != 4 && bps != 8) || !isSupport(pDIBitmap)) {
+ return FALSE;
+ }
+ SetPalette(pDIBitmap, bps);
+ FX_INT32 size = (FX_INT32)TIFFScanlineSize(tif_ctx);
+ FX_LPBYTE buf = (FX_LPBYTE)_TIFFmalloc(size);
+ if (buf == NULL) {
+ TIFFError(TIFFFileName(tif_ctx), "No space for scanline buffer");
+ return FALSE;
+ }
+ FX_LPBYTE bitMapbuffer = (FX_LPBYTE)pDIBitmap->GetBuffer();
+ FX_DWORD pitch = pDIBitmap->GetPitch();
+ for(FX_INT32 row = 0; row < height; row++) {
+ TIFFReadScanline(tif_ctx, buf, row, 0);
+ for(FX_INT32 j = 0; j < size; j++) {
+ switch(bps) {
+ case 4:
+ bitMapbuffer[row * pitch + 2 * j + 0] = (buf[j] & 0xF0) >> 4;
+ bitMapbuffer[row * pitch + 2 * j + 1] = (buf[j] & 0x0F) >> 0;
+ break;
+ case 8:
+ bitMapbuffer[row * pitch + j] = buf[j];
+ break;
+ }
+ }
+ }
+ _TIFFfree(buf);
+ return TRUE;
+}
+FX_BOOL CCodec_TiffContext::Decode24bppRGB(CFX_DIBitmap* pDIBitmap, FX_INT32 height, FX_INT32 width, FX_UINT16 bps, FX_UINT16 spp)
+{
+ if (pDIBitmap->GetBPP() != 24 || !isSupport(pDIBitmap)) {
+ return FALSE;
+ }
+ FX_INT32 size = (FX_INT32)TIFFScanlineSize(tif_ctx);
+ FX_LPBYTE buf = (FX_LPBYTE)_TIFFmalloc(size);
+ if (buf == NULL) {
+ TIFFError(TIFFFileName(tif_ctx), "No space for scanline buffer");
+ return FALSE;
+ }
+ FX_LPBYTE bitMapbuffer = (FX_LPBYTE)pDIBitmap->GetBuffer();
+ FX_DWORD pitch = pDIBitmap->GetPitch();
+ for(FX_INT32 row = 0; row < height; row++) {
+ TIFFReadScanline(tif_ctx, buf, row, 0);
+ for(FX_INT32 j = 0; j < size - 2; j += 3) {
+ bitMapbuffer[row * pitch + j + 0] = buf[j + 2];
+ bitMapbuffer[row * pitch + j + 1] = buf[j + 1];
+ bitMapbuffer[row * pitch + j + 2] = buf[j + 0];
+ }
+ }
+ _TIFFfree(buf);
+ return TRUE;
+}
+FX_BOOL CCodec_TiffContext::Decode(CFX_DIBitmap* pDIBitmap)
+{
+ FX_DWORD img_wid = pDIBitmap->GetWidth();
+ FX_DWORD img_hei = pDIBitmap->GetHeight();
+ FX_DWORD width = 0;
+ FX_DWORD height = 0;
+ TIFFGetField(tif_ctx, TIFFTAG_IMAGEWIDTH, &width);
+ TIFFGetField(tif_ctx, TIFFTAG_IMAGELENGTH, &height);
+ if (img_wid != width || img_hei != height) {
+ return FALSE;
+ }
+ if (pDIBitmap->GetBPP() == 32) {
+ FX_WORD rotation = ORIENTATION_TOPLEFT;
+ TIFFGetField(tif_ctx, TIFFTAG_ORIENTATION, &rotation);
+ if(TIFFReadRGBAImageOriented(tif_ctx, img_wid, img_hei,
+ (uint32*)pDIBitmap->GetBuffer(), rotation, 1)) {
+ for (FX_DWORD row = 0; row < img_hei; row++) {
+ FX_LPBYTE row_buf = (FX_LPBYTE)pDIBitmap->GetScanline(row);
+ _TiffBGRA2RGBA(row_buf, img_wid, 4);
+ }
+ return TRUE;
+ }
+ }
+ FX_UINT16 spp, bps;
+ TIFFGetField(tif_ctx, TIFFTAG_SAMPLESPERPIXEL, &spp);
+ TIFFGetField(tif_ctx, TIFFTAG_BITSPERSAMPLE, &bps);
+ FX_DWORD bpp = bps * spp;
+ if (bpp == 1) {
+ return Decode1bppRGB(pDIBitmap, height, width, bps, spp);
+ } else if (bpp <= 8) {
+ return Decode8bppRGB(pDIBitmap, height, width, bps, spp);
+ } else if (bpp <= 24) {
+ return Decode24bppRGB(pDIBitmap, height, width, bps, spp);
+ }
+ return FALSE;
+}
+FX_LPVOID CCodec_TiffModule::CreateDecoder(IFX_FileRead* file_ptr)
+{
+ CCodec_TiffContext* pDecoder = FX_NEW CCodec_TiffContext;
+ if (pDecoder == NULL) {
+ return NULL;
+ }
+ if (!pDecoder->InitDecoder(file_ptr)) {
+ delete pDecoder;
+ return NULL;
+ }
+ return pDecoder;
+}
+void CCodec_TiffModule::GetFrames(FX_LPVOID ctx, FX_INT32& frames)
+{
+ CCodec_TiffContext* pDecoder = (CCodec_TiffContext*)ctx;
+ pDecoder->GetFrames(frames);
+}
+FX_BOOL CCodec_TiffModule::LoadFrameInfo(FX_LPVOID ctx, FX_INT32 frame, FX_DWORD& width, FX_DWORD& height, FX_DWORD& comps, FX_DWORD& bpc, CFX_DIBAttribute* pAttribute)
+{
+ CCodec_TiffContext* pDecoder = (CCodec_TiffContext*)ctx;
+ return pDecoder->LoadFrameInfo(frame, width, height, comps, bpc, pAttribute);
+}
+FX_BOOL CCodec_TiffModule::Decode(void* ctx, class CFX_DIBitmap* pDIBitmap)
+{
+ CCodec_TiffContext* pDecoder = (CCodec_TiffContext*)ctx;
+ return pDecoder->Decode(pDIBitmap);
+}
+void CCodec_TiffModule::DestroyDecoder(void* ctx)
+{
+ CCodec_TiffContext* pDecoder = (CCodec_TiffContext*)ctx;
+ delete pDecoder;
+}
diff --git a/core/src/fxcodec/fx_lpng/include/fx_png.h b/core/src/fxcodec/fx_lpng/include/fx_png.h
new file mode 100644
index 0000000..4ef53d0
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/include/fx_png.h
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/png.h"
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_png.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_png.c
new file mode 100644
index 0000000..5329a64
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_png.c
@@ -0,0 +1,4299 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* png.c - location for general purpose libpng functions
+ *
+ * Last changed in libpng 1.6.2 [April 25, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#include "pngpriv.h"
+
+/* Generate a compiler error if there is an old png.h in the search path. */
+typedef png_libpng_version_1_6_3 Your_png_h_is_not_version_1_6_3;
+
+/* Tells libpng that we have already handled the first "num_bytes" bytes
+ * of the PNG file signature. If the PNG data is embedded into another
+ * stream we can set num_bytes = 8 so that libpng will not attempt to read
+ * or write any of the magic bytes before it starts on the IHDR.
+ */
+
+#ifdef PNG_READ_SUPPORTED
+void PNGAPI
+png_set_sig_bytes(png_structrp png_ptr, int num_bytes)
+{
+ png_debug(1, "in png_set_sig_bytes");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (num_bytes > 8)
+ png_error(png_ptr, "Too many bytes for PNG signature");
+
+ png_ptr->sig_bytes = (png_byte)(num_bytes < 0 ? 0 : num_bytes);
+}
+
+/* Checks whether the supplied bytes match the PNG signature. We allow
+ * checking less than the full 8-byte signature so that those apps that
+ * already read the first few bytes of a file to determine the file type
+ * can simply check the remaining bytes for extra assurance. Returns
+ * an integer less than, equal to, or greater than zero if sig is found,
+ * respectively, to be less than, to match, or be greater than the correct
+ * PNG signature (this is the same behavior as strcmp, memcmp, etc).
+ */
+int PNGAPI
+png_sig_cmp(png_const_bytep sig, png_size_t start, png_size_t num_to_check)
+{
+ png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
+
+ if (num_to_check > 8)
+ num_to_check = 8;
+
+ else if (num_to_check < 1)
+ return (-1);
+
+ if (start > 7)
+ return (-1);
+
+ if (start + num_to_check > 8)
+ num_to_check = 8 - start;
+
+ return ((int)(memcmp(&sig[start], &png_signature[start], num_to_check)));
+}
+
+#endif /* PNG_READ_SUPPORTED */
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+/* Function to allocate memory for zlib */
+PNG_FUNCTION(voidpf /* PRIVATE */,
+png_zalloc,(voidpf png_ptr, uInt items, uInt size),PNG_ALLOCATED)
+{
+ png_alloc_size_t num_bytes = size;
+
+ if (png_ptr == NULL)
+ return NULL;
+
+ if (items >= (~(png_alloc_size_t)0)/size)
+ {
+ png_warning (png_voidcast(png_structrp, png_ptr),
+ "Potential overflow in png_zalloc()");
+ return NULL;
+ }
+
+ num_bytes *= items;
+ return png_malloc_warn(png_voidcast(png_structrp, png_ptr), num_bytes);
+}
+
+/* Function to free memory for zlib */
+void /* PRIVATE */
+png_zfree(voidpf png_ptr, voidpf ptr)
+{
+ png_free(png_voidcast(png_const_structrp,png_ptr), ptr);
+}
+
+/* Reset the CRC variable to 32 bits of 1's. Care must be taken
+ * in case CRC is > 32 bits to leave the top bits 0.
+ */
+void /* PRIVATE */
+png_reset_crc(png_structrp png_ptr)
+{
+ /* The cast is safe because the crc is a 32 bit value. */
+ png_ptr->crc = (png_uint_32)crc32(0, Z_NULL, 0);
+}
+
+/* Calculate the CRC over a section of data. We can only pass as
+ * much data to this routine as the largest single buffer size. We
+ * also check that this data will actually be used before going to the
+ * trouble of calculating it.
+ */
+void /* PRIVATE */
+png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, png_size_t length)
+{
+ int need_crc = 1;
+
+ if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))
+ {
+ if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
+ (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
+ need_crc = 0;
+ }
+
+ else /* critical */
+ {
+ if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
+ need_crc = 0;
+ }
+
+ /* 'uLong' is defined in zlib.h as unsigned long; this means that on some
+ * systems it is a 64 bit value. crc32, however, returns 32 bits so the
+ * following cast is safe. 'uInt' may be no more than 16 bits, so it is
+ * necessary to perform a loop here.
+ */
+ if (need_crc && length > 0)
+ {
+ uLong crc = png_ptr->crc; /* Should never issue a warning */
+
+ do
+ {
+ uInt safe_length = (uInt)length;
+ if (safe_length == 0)
+ safe_length = (uInt)-1; /* evil, but safe */
+
+ crc = crc32(crc, ptr, safe_length);
+
+ /* The following should never issue compiler warnings; if they do the
+ * target system has characteristics that will probably violate other
+ * assumptions within the libpng code.
+ */
+ ptr += safe_length;
+ length -= safe_length;
+ }
+ while (length > 0);
+
+ /* And the following is always safe because the crc is only 32 bits. */
+ png_ptr->crc = (png_uint_32)crc;
+ }
+}
+
+/* Check a user supplied version number, called from both read and write
+ * functions that create a png_struct.
+ */
+int
+png_user_version_check(png_structrp png_ptr, png_const_charp user_png_ver)
+{
+ if (user_png_ver)
+ {
+ int i = 0;
+
+ do
+ {
+ if (user_png_ver[i] != png_libpng_ver[i])
+ png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+ } while (png_libpng_ver[i++]);
+ }
+
+ else
+ png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+
+ if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
+ {
+ /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
+ * we must recompile any applications that use any older library version.
+ * For versions after libpng 1.0, we will be compatible, so we need
+ * only check the first and third digits (note that when we reach version
+ * 1.10 we will need to check the fourth symbol, namely user_png_ver[3]).
+ */
+ if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
+ (user_png_ver[0] == '1' && (user_png_ver[2] != png_libpng_ver[2] ||
+ user_png_ver[3] != png_libpng_ver[3])) ||
+ (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
+ {
+#ifdef PNG_WARNINGS_SUPPORTED
+ size_t pos = 0;
+ char m[128];
+
+ pos = png_safecat(m, (sizeof m), pos,
+ "Application built with libpng-");
+ pos = png_safecat(m, (sizeof m), pos, user_png_ver);
+ pos = png_safecat(m, (sizeof m), pos, " but running with ");
+ pos = png_safecat(m, (sizeof m), pos, png_libpng_ver);
+
+ png_warning(png_ptr, m);
+#endif
+
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ png_ptr->flags = 0;
+#endif
+
+ return 0;
+ }
+ }
+
+ /* Success return. */
+ return 1;
+}
+
+/* Generic function to create a png_struct for either read or write - this
+ * contains the common initialization.
+ */
+PNG_FUNCTION(png_structp /* PRIVATE */,
+png_create_png_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
+{
+ png_struct create_struct;
+# ifdef PNG_SETJMP_SUPPORTED
+ jmp_buf create_jmp_buf;
+# endif
+
+ /* This temporary stack-allocated structure is used to provide a place to
+ * build enough context to allow the user provided memory allocator (if any)
+ * to be called.
+ */
+ memset(&create_struct, 0, (sizeof create_struct));
+
+ /* Added at libpng-1.2.6 */
+# ifdef PNG_USER_LIMITS_SUPPORTED
+ create_struct.user_width_max = PNG_USER_WIDTH_MAX;
+ create_struct.user_height_max = PNG_USER_HEIGHT_MAX;
+
+# ifdef PNG_USER_CHUNK_CACHE_MAX
+ /* Added at libpng-1.2.43 and 1.4.0 */
+ create_struct.user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
+# endif
+
+# ifdef PNG_USER_CHUNK_MALLOC_MAX
+ /* Added at libpng-1.2.43 and 1.4.1, required only for read but exists
+ * in png_struct regardless.
+ */
+ create_struct.user_chunk_malloc_max = PNG_USER_CHUNK_MALLOC_MAX;
+# endif
+# endif
+
+ /* The following two API calls simply set fields in png_struct, so it is safe
+ * to do them now even though error handling is not yet set up.
+ */
+# ifdef PNG_USER_MEM_SUPPORTED
+ png_set_mem_fn(&create_struct, mem_ptr, malloc_fn, free_fn);
+# endif
+
+ /* (*error_fn) can return control to the caller after the error_ptr is set,
+ * this will result in a memory leak unless the error_fn does something
+ * extremely sophisticated. The design lacks merit but is implicit in the
+ * API.
+ */
+ png_set_error_fn(&create_struct, error_ptr, error_fn, warn_fn);
+
+# ifdef PNG_SETJMP_SUPPORTED
+ if (!setjmp(create_jmp_buf))
+ {
+ /* Temporarily fake out the longjmp information until we have
+ * successfully completed this function. This only works if we have
+ * setjmp() support compiled in, but it is safe - this stuff should
+ * never happen.
+ */
+ create_struct.jmp_buf_ptr = &create_jmp_buf;
+ create_struct.jmp_buf_size = 0; /*stack allocation*/
+ create_struct.longjmp_fn = longjmp;
+# else
+ {
+# endif
+ /* Call the general version checker (shared with read and write code):
+ */
+ if (png_user_version_check(&create_struct, user_png_ver))
+ {
+ png_structrp png_ptr = png_voidcast(png_structrp,
+ png_malloc_warn(&create_struct, (sizeof *png_ptr)));
+
+ if (png_ptr != NULL)
+ {
+ /* png_ptr->zstream holds a back-pointer to the png_struct, so
+ * this can only be done now:
+ */
+ create_struct.zstream.zalloc = png_zalloc;
+ create_struct.zstream.zfree = png_zfree;
+ create_struct.zstream.opaque = png_ptr;
+
+# ifdef PNG_SETJMP_SUPPORTED
+ /* Eliminate the local error handling: */
+ create_struct.jmp_buf_ptr = NULL;
+ create_struct.jmp_buf_size = 0;
+ create_struct.longjmp_fn = 0;
+# endif
+
+ *png_ptr = create_struct;
+
+ /* This is the successful return point */
+ return png_ptr;
+ }
+ }
+ }
+
+ /* A longjmp because of a bug in the application storage allocator or a
+ * simple failure to allocate the png_struct.
+ */
+ return NULL;
+}
+
+/* Allocate the memory for an info_struct for the application. */
+PNG_FUNCTION(png_infop,PNGAPI
+png_create_info_struct,(png_const_structrp png_ptr),PNG_ALLOCATED)
+{
+ png_inforp info_ptr;
+
+ png_debug(1, "in png_create_info_struct");
+
+ if (png_ptr == NULL)
+ return NULL;
+
+ /* Use the internal API that does not (or at least should not) error out, so
+ * that this call always returns ok. The application typically sets up the
+ * error handling *after* creating the info_struct because this is the way it
+ * has always been done in 'example.c'.
+ */
+ info_ptr = png_voidcast(png_inforp, png_malloc_base(png_ptr,
+ (sizeof *info_ptr)));
+
+ if (info_ptr != NULL)
+ memset(info_ptr, 0, (sizeof *info_ptr));
+
+ return info_ptr;
+}
+
+/* This function frees the memory associated with a single info struct.
+ * Normally, one would use either png_destroy_read_struct() or
+ * png_destroy_write_struct() to free an info struct, but this may be
+ * useful for some applications. From libpng 1.6.0 this function is also used
+ * internally to implement the png_info release part of the 'struct' destroy
+ * APIs. This ensures that all possible approaches free the same data (all of
+ * it).
+ */
+void PNGAPI
+png_destroy_info_struct(png_const_structrp png_ptr, png_infopp info_ptr_ptr)
+{
+ png_inforp info_ptr = NULL;
+
+ png_debug(1, "in png_destroy_info_struct");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (info_ptr_ptr != NULL)
+ info_ptr = *info_ptr_ptr;
+
+ if (info_ptr != NULL)
+ {
+ /* Do this first in case of an error below; if the app implements its own
+ * memory management this can lead to png_free calling png_error, which
+ * will abort this routine and return control to the app error handler.
+ * An infinite loop may result if it then tries to free the same info
+ * ptr.
+ */
+ *info_ptr_ptr = NULL;
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
+ memset(info_ptr, 0, (sizeof *info_ptr));
+ png_free(png_ptr, info_ptr);
+ }
+}
+
+/* Initialize the info structure. This is now an internal function (0.89)
+ * and applications using it are urged to use png_create_info_struct()
+ * instead. Use deprecated in 1.6.0, internal use removed (used internally it
+ * is just a memset).
+ *
+ * NOTE: it is almost inconceivable that this API is used because it bypasses
+ * the user-memory mechanism and the user error handling/warning mechanisms in
+ * those cases where it does anything other than a memset.
+ */
+PNG_FUNCTION(void,PNGAPI
+png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size),
+ PNG_DEPRECATED)
+{
+ png_inforp info_ptr = *ptr_ptr;
+
+ png_debug(1, "in png_info_init_3");
+
+ if (info_ptr == NULL)
+ return;
+
+ if ((sizeof (png_info)) > png_info_struct_size)
+ {
+ *ptr_ptr = NULL;
+ /* The following line is why this API should not be used: */
+ free(info_ptr);
+ info_ptr = png_voidcast(png_inforp, png_malloc_base(NULL,
+ (sizeof *info_ptr)));
+ *ptr_ptr = info_ptr;
+ }
+
+ /* Set everything to 0 */
+ memset(info_ptr, 0, (sizeof *info_ptr));
+}
+
+/* The following API is not called internally */
+void PNGAPI
+png_data_freer(png_const_structrp png_ptr, png_inforp info_ptr,
+ int freer, png_uint_32 mask)
+{
+ png_debug(1, "in png_data_freer");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (freer == PNG_DESTROY_WILL_FREE_DATA)
+ info_ptr->free_me |= mask;
+
+ else if (freer == PNG_USER_WILL_FREE_DATA)
+ info_ptr->free_me &= ~mask;
+
+ else
+ png_error(png_ptr, "Unknown freer parameter in png_data_freer");
+}
+
+void PNGAPI
+png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
+ int num)
+{
+ png_debug(1, "in png_free_data");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+#ifdef PNG_TEXT_SUPPORTED
+ /* Free text item num or (if num == -1) all text items */
+ if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
+ {
+ if (num != -1)
+ {
+ if (info_ptr->text && info_ptr->text[num].key)
+ {
+ png_free(png_ptr, info_ptr->text[num].key);
+ info_ptr->text[num].key = NULL;
+ }
+ }
+
+ else
+ {
+ int i;
+ for (i = 0; i < info_ptr->num_text; i++)
+ png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i);
+ png_free(png_ptr, info_ptr->text);
+ info_ptr->text = NULL;
+ info_ptr->num_text=0;
+ }
+ }
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+ /* Free any tRNS entry */
+ if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->trans_alpha);
+ info_ptr->trans_alpha = NULL;
+ info_ptr->valid &= ~PNG_INFO_tRNS;
+ }
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+ /* Free any sCAL entry */
+ if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->scal_s_width);
+ png_free(png_ptr, info_ptr->scal_s_height);
+ info_ptr->scal_s_width = NULL;
+ info_ptr->scal_s_height = NULL;
+ info_ptr->valid &= ~PNG_INFO_sCAL;
+ }
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+ /* Free any pCAL entry */
+ if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->pcal_purpose);
+ png_free(png_ptr, info_ptr->pcal_units);
+ info_ptr->pcal_purpose = NULL;
+ info_ptr->pcal_units = NULL;
+ if (info_ptr->pcal_params != NULL)
+ {
+ unsigned int i;
+ for (i = 0; i < info_ptr->pcal_nparams; i++)
+ {
+ png_free(png_ptr, info_ptr->pcal_params[i]);
+ info_ptr->pcal_params[i] = NULL;
+ }
+ png_free(png_ptr, info_ptr->pcal_params);
+ info_ptr->pcal_params = NULL;
+ }
+ info_ptr->valid &= ~PNG_INFO_pCAL;
+ }
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+ /* Free any profile entry */
+ if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->iccp_name);
+ png_free(png_ptr, info_ptr->iccp_profile);
+ info_ptr->iccp_name = NULL;
+ info_ptr->iccp_profile = NULL;
+ info_ptr->valid &= ~PNG_INFO_iCCP;
+ }
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+ /* Free a given sPLT entry, or (if num == -1) all sPLT entries */
+ if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
+ {
+ if (num != -1)
+ {
+ if (info_ptr->splt_palettes)
+ {
+ png_free(png_ptr, info_ptr->splt_palettes[num].name);
+ png_free(png_ptr, info_ptr->splt_palettes[num].entries);
+ info_ptr->splt_palettes[num].name = NULL;
+ info_ptr->splt_palettes[num].entries = NULL;
+ }
+ }
+
+ else
+ {
+ if (info_ptr->splt_palettes_num)
+ {
+ int i;
+ for (i = 0; i < info_ptr->splt_palettes_num; i++)
+ png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, (int)i);
+
+ png_free(png_ptr, info_ptr->splt_palettes);
+ info_ptr->splt_palettes = NULL;
+ info_ptr->splt_palettes_num = 0;
+ }
+ info_ptr->valid &= ~PNG_INFO_sPLT;
+ }
+ }
+#endif
+
+#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+ if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
+ {
+ if (num != -1)
+ {
+ if (info_ptr->unknown_chunks)
+ {
+ png_free(png_ptr, info_ptr->unknown_chunks[num].data);
+ info_ptr->unknown_chunks[num].data = NULL;
+ }
+ }
+
+ else
+ {
+ int i;
+
+ if (info_ptr->unknown_chunks_num)
+ {
+ for (i = 0; i < info_ptr->unknown_chunks_num; i++)
+ png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, (int)i);
+
+ png_free(png_ptr, info_ptr->unknown_chunks);
+ info_ptr->unknown_chunks = NULL;
+ info_ptr->unknown_chunks_num = 0;
+ }
+ }
+ }
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+ /* Free any hIST entry */
+ if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->hist);
+ info_ptr->hist = NULL;
+ info_ptr->valid &= ~PNG_INFO_hIST;
+ }
+#endif
+
+ /* Free any PLTE entry that was internally allocated */
+ if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->palette);
+ info_ptr->palette = NULL;
+ info_ptr->valid &= ~PNG_INFO_PLTE;
+ info_ptr->num_palette = 0;
+ }
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+ /* Free any image bits attached to the info structure */
+ if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
+ {
+ if (info_ptr->row_pointers)
+ {
+ png_uint_32 row;
+ for (row = 0; row < info_ptr->height; row++)
+ {
+ png_free(png_ptr, info_ptr->row_pointers[row]);
+ info_ptr->row_pointers[row] = NULL;
+ }
+ png_free(png_ptr, info_ptr->row_pointers);
+ info_ptr->row_pointers = NULL;
+ }
+ info_ptr->valid &= ~PNG_INFO_IDAT;
+ }
+#endif
+
+ if (num != -1)
+ mask &= ~PNG_FREE_MUL;
+
+ info_ptr->free_me &= ~mask;
+}
+#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
+
+/* This function returns a pointer to the io_ptr associated with the user
+ * functions. The application should free any memory associated with this
+ * pointer before png_write_destroy() or png_read_destroy() are called.
+ */
+png_voidp PNGAPI
+png_get_io_ptr(png_const_structrp png_ptr)
+{
+ if (png_ptr == NULL)
+ return (NULL);
+
+ return (png_ptr->io_ptr);
+}
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+# ifdef PNG_STDIO_SUPPORTED
+/* Initialize the default input/output functions for the PNG file. If you
+ * use your own read or write routines, you can call either png_set_read_fn()
+ * or png_set_write_fn() instead of png_init_io(). If you have defined
+ * PNG_NO_STDIO or otherwise disabled PNG_STDIO_SUPPORTED, you must use a
+ * function of your own because "FILE *" isn't necessarily available.
+ */
+void PNGAPI
+png_init_io(png_structrp png_ptr, png_FILE_p fp)
+{
+ png_debug(1, "in png_init_io");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->io_ptr = (png_voidp)fp;
+}
+# endif
+
+#ifdef PNG_SAVE_INT_32_SUPPORTED
+/* The png_save_int_32 function assumes integers are stored in two's
+ * complement format. If this isn't the case, then this routine needs to
+ * be modified to write data in two's complement format. Note that,
+ * the following works correctly even if png_int_32 has more than 32 bits
+ * (compare the more complex code required on read for sign extension.)
+ */
+void PNGAPI
+png_save_int_32(png_bytep buf, png_int_32 i)
+{
+ buf[0] = (png_byte)((i >> 24) & 0xff);
+ buf[1] = (png_byte)((i >> 16) & 0xff);
+ buf[2] = (png_byte)((i >> 8) & 0xff);
+ buf[3] = (png_byte)(i & 0xff);
+}
+#endif
+
+# ifdef PNG_TIME_RFC1123_SUPPORTED
+/* Convert the supplied time into an RFC 1123 string suitable for use in
+ * a "Creation Time" or other text-based time string.
+ */
+int PNGAPI
+png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime)
+{
+ static PNG_CONST char short_months[12][4] =
+ {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+
+ if (out == NULL)
+ return 0;
+
+ if (ptime->year > 9999 /* RFC1123 limitation */ ||
+ ptime->month == 0 || ptime->month > 12 ||
+ ptime->day == 0 || ptime->day > 31 ||
+ ptime->hour > 23 || ptime->minute > 59 ||
+ ptime->second > 60)
+ return 0;
+
+ {
+ size_t pos = 0;
+ char number_buf[5]; /* enough for a four-digit year */
+
+# define APPEND_STRING(string) pos = png_safecat(out, 29, pos, (string))
+# define APPEND_NUMBER(format, value)\
+ APPEND_STRING(PNG_FORMAT_NUMBER(number_buf, format, (value)))
+# define APPEND(ch) if (pos < 28) out[pos++] = (ch)
+
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_u, (unsigned)ptime->day);
+ APPEND(' ');
+ APPEND_STRING(short_months[(ptime->month - 1)]);
+ APPEND(' ');
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_u, ptime->year);
+ APPEND(' ');
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->hour);
+ APPEND(':');
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->minute);
+ APPEND(':');
+ APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->second);
+ APPEND_STRING(" +0000"); /* This reliably terminates the buffer */
+
+# undef APPEND
+# undef APPEND_NUMBER
+# undef APPEND_STRING
+ }
+
+ return 1;
+}
+
+# if PNG_LIBPNG_VER < 10700
+/* To do: remove the following from libpng-1.7 */
+/* Original API that uses a private buffer in png_struct.
+ * Deprecated because it causes png_struct to carry a spurious temporary
+ * buffer (png_struct::time_buffer), better to have the caller pass this in.
+ */
+png_const_charp PNGAPI
+png_convert_to_rfc1123(png_structrp png_ptr, png_const_timep ptime)
+{
+ if (png_ptr != NULL)
+ {
+ /* The only failure above if png_ptr != NULL is from an invalid ptime */
+ if (!png_convert_to_rfc1123_buffer(png_ptr->time_buffer, ptime))
+ png_warning(png_ptr, "Ignoring invalid time value");
+
+ else
+ return png_ptr->time_buffer;
+ }
+
+ return NULL;
+}
+# endif
+# endif /* PNG_TIME_RFC1123_SUPPORTED */
+
+#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
+
+png_const_charp PNGAPI
+png_get_copyright(png_const_structrp png_ptr)
+{
+ PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
+#ifdef PNG_STRING_COPYRIGHT
+ return PNG_STRING_COPYRIGHT
+#else
+# ifdef __STDC__
+ return PNG_STRING_NEWLINE \
+ "libpng version 1.6.3 - July 18, 2013" PNG_STRING_NEWLINE \
+ "Copyright (c) 1998-2013 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
+ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
+ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
+ PNG_STRING_NEWLINE;
+# else
+ return "libpng version 1.6.3 - July 18, 2013\
+ Copyright (c) 1998-2013 Glenn Randers-Pehrson\
+ Copyright (c) 1996-1997 Andreas Dilger\
+ Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
+# endif
+#endif
+}
+
+/* The following return the library version as a short string in the
+ * format 1.0.0 through 99.99.99zz. To get the version of *.h files
+ * used with your application, print out PNG_LIBPNG_VER_STRING, which
+ * is defined in png.h.
+ * Note: now there is no difference between png_get_libpng_ver() and
+ * png_get_header_ver(). Due to the version_nn_nn_nn typedef guard,
+ * it is guaranteed that png.c uses the correct version of png.h.
+ */
+png_const_charp PNGAPI
+png_get_libpng_ver(png_const_structrp png_ptr)
+{
+ /* Version of *.c files used when building libpng */
+ return png_get_header_ver(png_ptr);
+}
+
+png_const_charp PNGAPI
+png_get_header_ver(png_const_structrp png_ptr)
+{
+ /* Version of *.h files used when building libpng */
+ PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
+ return PNG_LIBPNG_VER_STRING;
+}
+
+png_const_charp PNGAPI
+png_get_header_version(png_const_structrp png_ptr)
+{
+ /* Returns longer string containing both version and date */
+ PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
+#ifdef __STDC__
+ return PNG_HEADER_VERSION_STRING
+# ifndef PNG_READ_SUPPORTED
+ " (NO READ SUPPORT)"
+# endif
+ PNG_STRING_NEWLINE;
+#else
+ return PNG_HEADER_VERSION_STRING;
+#endif
+}
+
+#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+int PNGAPI
+png_handle_as_unknown(png_const_structrp png_ptr, png_const_bytep chunk_name)
+{
+ /* Check chunk_name and return "keep" value if it's on the list, else 0 */
+ png_const_bytep p, p_end;
+
+ if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list == 0)
+ return PNG_HANDLE_CHUNK_AS_DEFAULT;
+
+ p_end = png_ptr->chunk_list;
+ p = p_end + png_ptr->num_chunk_list*5; /* beyond end */
+
+ /* The code is the fifth byte after each four byte string. Historically this
+ * code was always searched from the end of the list, this is no longer
+ * necessary because the 'set' routine handles duplicate entries correcty.
+ */
+ do /* num_chunk_list > 0, so at least one */
+ {
+ p -= 5;
+
+ if (!memcmp(chunk_name, p, 4))
+ return p[4];
+ }
+ while (p > p_end);
+
+ /* This means that known chunks should be processed and unknown chunks should
+ * be handled according to the value of png_ptr->unknown_default; this can be
+ * confusing because, as a result, there are two levels of defaulting for
+ * unknown chunks.
+ */
+ return PNG_HANDLE_CHUNK_AS_DEFAULT;
+}
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+int /* PRIVATE */
+png_chunk_unknown_handling(png_const_structrp png_ptr, png_uint_32 chunk_name)
+{
+ png_byte chunk_string[5];
+
+ PNG_CSTRING_FROM_CHUNK(chunk_string, chunk_name);
+ return png_handle_as_unknown(png_ptr, chunk_string);
+}
+#endif /* READ_UNKNOWN_CHUNKS */
+#endif /* SET_UNKNOWN_CHUNKS */
+
+#ifdef PNG_READ_SUPPORTED
+/* This function, added to libpng-1.0.6g, is untested. */
+int PNGAPI
+png_reset_zstream(png_structrp png_ptr)
+{
+ if (png_ptr == NULL)
+ return Z_STREAM_ERROR;
+
+ /* WARNING: this resets the window bits to the maximum! */
+ return (inflateReset(&png_ptr->zstream));
+}
+#endif /* PNG_READ_SUPPORTED */
+
+/* This function was added to libpng-1.0.7 */
+png_uint_32 PNGAPI
+png_access_version_number(void)
+{
+ /* Version of *.c files used when building libpng */
+ return((png_uint_32)PNG_LIBPNG_VER);
+}
+
+
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+/* Ensure that png_ptr->zstream.msg holds some appropriate error message string.
+ * If it doesn't 'ret' is used to set it to something appropriate, even in cases
+ * like Z_OK or Z_STREAM_END where the error code is apparently a success code.
+ */
+void /* PRIVATE */
+png_zstream_error(png_structrp png_ptr, int ret)
+{
+ /* Translate 'ret' into an appropriate error string, priority is given to the
+ * one in zstream if set. This always returns a string, even in cases like
+ * Z_OK or Z_STREAM_END where the error code is a success code.
+ */
+ if (png_ptr->zstream.msg == NULL) switch (ret)
+ {
+ default:
+ case Z_OK:
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected zlib return code");
+ break;
+
+ case Z_STREAM_END:
+ /* Normal exit */
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected end of LZ stream");
+ break;
+
+ case Z_NEED_DICT:
+ /* This means the deflate stream did not have a dictionary; this
+ * indicates a bogus PNG.
+ */
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("missing LZ dictionary");
+ break;
+
+ case Z_ERRNO:
+ /* gz APIs only: should not happen */
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("zlib IO error");
+ break;
+
+ case Z_STREAM_ERROR:
+ /* internal libpng error */
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("bad parameters to zlib");
+ break;
+
+ case Z_DATA_ERROR:
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("damaged LZ stream");
+ break;
+
+ case Z_MEM_ERROR:
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("insufficient memory");
+ break;
+
+ case Z_BUF_ERROR:
+ /* End of input or output; not a problem if the caller is doing
+ * incremental read or write.
+ */
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("truncated");
+ break;
+
+ case Z_VERSION_ERROR:
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("unsupported zlib version");
+ break;
+
+ case PNG_UNEXPECTED_ZLIB_RETURN:
+ /* Compile errors here mean that zlib now uses the value co-opted in
+ * pngpriv.h for PNG_UNEXPECTED_ZLIB_RETURN; update the switch above
+ * and change pngpriv.h. Note that this message is "... return",
+ * whereas the default/Z_OK one is "... return code".
+ */
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected zlib return");
+ break;
+ }
+}
+
+/* png_convert_size: a PNGAPI but no longer in png.h, so deleted
+ * at libpng 1.5.5!
+ */
+
+/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
+#ifdef PNG_GAMMA_SUPPORTED /* always set if COLORSPACE */
+static int
+png_colorspace_check_gamma(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, png_fixed_point gAMA, int from)
+ /* This is called to check a new gamma value against an existing one. The
+ * routine returns false if the new gamma value should not be written.
+ *
+ * 'from' says where the new gamma value comes from:
+ *
+ * 0: the new gamma value is the libpng estimate for an ICC profile
+ * 1: the new gamma value comes from a gAMA chunk
+ * 2: the new gamma value comes from an sRGB chunk
+ */
+{
+ png_fixed_point gtest;
+
+ if ((colorspace->flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
+ (!png_muldiv(>est, colorspace->gamma, PNG_FP_1, gAMA) ||
+ png_gamma_significant(gtest)))
+ {
+ /* Either this is an sRGB image, in which case the calculated gamma
+ * approximation should match, or this is an image with a profile and the
+ * value libpng calculates for the gamma of the profile does not match the
+ * value recorded in the file. The former, sRGB, case is an error, the
+ * latter is just a warning.
+ */
+ if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0 || from == 2)
+ {
+ png_chunk_report(png_ptr, "gamma value does not match sRGB",
+ PNG_CHUNK_ERROR);
+ /* Do not overwrite an sRGB value */
+ return from == 2;
+ }
+
+ else /* sRGB tag not involved */
+ {
+ png_chunk_report(png_ptr, "gamma value does not match libpng estimate",
+ PNG_CHUNK_WARNING);
+ return from == 1;
+ }
+ }
+
+ return 1;
+}
+
+void /* PRIVATE */
+png_colorspace_set_gamma(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, png_fixed_point gAMA)
+{
+ /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't
+ * occur. Since the fixed point representation is assymetrical it is
+ * possible for 1/gamma to overflow the limit of 21474 and this means the
+ * gamma value must be at least 5/100000 and hence at most 20000.0. For
+ * safety the limits here are a little narrower. The values are 0.00016 to
+ * 6250.0, which are truly ridiculous gamma values (and will produce
+ * displays that are all black or all white.)
+ *
+ * In 1.6.0 this test replaces the ones in pngrutil.c, in the gAMA chunk
+ * handling code, which only required the value to be >0.
+ */
+ png_const_charp errmsg;
+
+ if (gAMA < 16 || gAMA > 625000000)
+ errmsg = "gamma value out of range";
+
+# ifdef PNG_READ_gAMA_SUPPORTED
+ /* Allow the application to set the gamma value more than once */
+ else if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
+ (colorspace->flags & PNG_COLORSPACE_FROM_gAMA) != 0)
+ errmsg = "duplicate";
+# endif
+
+ /* Do nothing if the colorspace is already invalid */
+ else if (colorspace->flags & PNG_COLORSPACE_INVALID)
+ return;
+
+ else
+ {
+ if (png_colorspace_check_gamma(png_ptr, colorspace, gAMA, 1/*from gAMA*/))
+ {
+ /* Store this gamma value. */
+ colorspace->gamma = gAMA;
+ colorspace->flags |=
+ (PNG_COLORSPACE_HAVE_GAMMA | PNG_COLORSPACE_FROM_gAMA);
+ }
+
+ /* At present if the check_gamma test fails the gamma of the colorspace is
+ * not updated however the colorspace is not invalidated. This
+ * corresponds to the case where the existing gamma comes from an sRGB
+ * chunk or profile. An error message has already been output.
+ */
+ return;
+ }
+
+ /* Error exit - errmsg has been set. */
+ colorspace->flags |= PNG_COLORSPACE_INVALID;
+ png_chunk_report(png_ptr, errmsg, PNG_CHUNK_WRITE_ERROR);
+}
+
+void /* PRIVATE */
+png_colorspace_sync_info(png_const_structrp png_ptr, png_inforp info_ptr)
+{
+ if (info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID)
+ {
+ /* Everything is invalid */
+ info_ptr->valid &= ~(PNG_INFO_gAMA|PNG_INFO_cHRM|PNG_INFO_sRGB|
+ PNG_INFO_iCCP);
+
+# ifdef PNG_COLORSPACE_SUPPORTED
+ /* Clean up the iCCP profile now if it won't be used. */
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, -1/*not used*/);
+# else
+ PNG_UNUSED(png_ptr)
+# endif
+ }
+
+ else
+ {
+# ifdef PNG_COLORSPACE_SUPPORTED
+ /* Leave the INFO_iCCP flag set if the pngset.c code has already set
+ * it; this allows a PNG to contain a profile which matches sRGB and
+ * yet still have that profile retrievable by the application.
+ */
+ if (info_ptr->colorspace.flags & PNG_COLORSPACE_MATCHES_sRGB)
+ info_ptr->valid |= PNG_INFO_sRGB;
+
+ else
+ info_ptr->valid &= ~PNG_INFO_sRGB;
+
+ if (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS)
+ info_ptr->valid |= PNG_INFO_cHRM;
+
+ else
+ info_ptr->valid &= ~PNG_INFO_cHRM;
+# endif
+
+ if (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA)
+ info_ptr->valid |= PNG_INFO_gAMA;
+
+ else
+ info_ptr->valid &= ~PNG_INFO_gAMA;
+ }
+}
+
+#ifdef PNG_READ_SUPPORTED
+void /* PRIVATE */
+png_colorspace_sync(png_const_structrp png_ptr, png_inforp info_ptr)
+{
+ if (info_ptr == NULL) /* reduce code size; check here not in the caller */
+ return;
+
+ info_ptr->colorspace = png_ptr->colorspace;
+ png_colorspace_sync_info(png_ptr, info_ptr);
+}
+#endif
+#endif
+
+#ifdef PNG_COLORSPACE_SUPPORTED
+/* Added at libpng-1.5.5 to support read and write of true CIEXYZ values for
+ * cHRM, as opposed to using chromaticities. These internal APIs return
+ * non-zero on a parameter error. The X, Y and Z values are required to be
+ * positive and less than 1.0.
+ */
+static int
+png_xy_from_XYZ(png_xy *xy, const png_XYZ *XYZ)
+{
+ png_int_32 d, dwhite, whiteX, whiteY;
+
+ d = XYZ->red_X + XYZ->red_Y + XYZ->red_Z;
+ if (!png_muldiv(&xy->redx, XYZ->red_X, PNG_FP_1, d)) return 1;
+ if (!png_muldiv(&xy->redy, XYZ->red_Y, PNG_FP_1, d)) return 1;
+ dwhite = d;
+ whiteX = XYZ->red_X;
+ whiteY = XYZ->red_Y;
+
+ d = XYZ->green_X + XYZ->green_Y + XYZ->green_Z;
+ if (!png_muldiv(&xy->greenx, XYZ->green_X, PNG_FP_1, d)) return 1;
+ if (!png_muldiv(&xy->greeny, XYZ->green_Y, PNG_FP_1, d)) return 1;
+ dwhite += d;
+ whiteX += XYZ->green_X;
+ whiteY += XYZ->green_Y;
+
+ d = XYZ->blue_X + XYZ->blue_Y + XYZ->blue_Z;
+ if (!png_muldiv(&xy->bluex, XYZ->blue_X, PNG_FP_1, d)) return 1;
+ if (!png_muldiv(&xy->bluey, XYZ->blue_Y, PNG_FP_1, d)) return 1;
+ dwhite += d;
+ whiteX += XYZ->blue_X;
+ whiteY += XYZ->blue_Y;
+
+ /* The reference white is simply the sum of the end-point (X,Y,Z) vectors,
+ * thus:
+ */
+ if (!png_muldiv(&xy->whitex, whiteX, PNG_FP_1, dwhite)) return 1;
+ if (!png_muldiv(&xy->whitey, whiteY, PNG_FP_1, dwhite)) return 1;
+
+ return 0;
+}
+
+static int
+png_XYZ_from_xy(png_XYZ *XYZ, const png_xy *xy)
+{
+ png_fixed_point red_inverse, green_inverse, blue_scale;
+ png_fixed_point left, right, denominator;
+
+ /* Check xy and, implicitly, z. Note that wide gamut color spaces typically
+ * have end points with 0 tristimulus values (these are impossible end
+ * points, but they are used to cover the possible colors.)
+ */
+ if (xy->redx < 0 || xy->redx > PNG_FP_1) return 1;
+ if (xy->redy < 0 || xy->redy > PNG_FP_1-xy->redx) return 1;
+ if (xy->greenx < 0 || xy->greenx > PNG_FP_1) return 1;
+ if (xy->greeny < 0 || xy->greeny > PNG_FP_1-xy->greenx) return 1;
+ if (xy->bluex < 0 || xy->bluex > PNG_FP_1) return 1;
+ if (xy->bluey < 0 || xy->bluey > PNG_FP_1-xy->bluex) return 1;
+ if (xy->whitex < 0 || xy->whitex > PNG_FP_1) return 1;
+ if (xy->whitey < 0 || xy->whitey > PNG_FP_1-xy->whitex) return 1;
+
+ /* The reverse calculation is more difficult because the original tristimulus
+ * value had 9 independent values (red,green,blue)x(X,Y,Z) however only 8
+ * derived values were recorded in the cHRM chunk;
+ * (red,green,blue,white)x(x,y). This loses one degree of freedom and
+ * therefore an arbitrary ninth value has to be introduced to undo the
+ * original transformations.
+ *
+ * Think of the original end-points as points in (X,Y,Z) space. The
+ * chromaticity values (c) have the property:
+ *
+ * C
+ * c = ---------
+ * X + Y + Z
+ *
+ * For each c (x,y,z) from the corresponding original C (X,Y,Z). Thus the
+ * three chromaticity values (x,y,z) for each end-point obey the
+ * relationship:
+ *
+ * x + y + z = 1
+ *
+ * This describes the plane in (X,Y,Z) space that intersects each axis at the
+ * value 1.0; call this the chromaticity plane. Thus the chromaticity
+ * calculation has scaled each end-point so that it is on the x+y+z=1 plane
+ * and chromaticity is the intersection of the vector from the origin to the
+ * (X,Y,Z) value with the chromaticity plane.
+ *
+ * To fully invert the chromaticity calculation we would need the three
+ * end-point scale factors, (red-scale, green-scale, blue-scale), but these
+ * were not recorded. Instead we calculated the reference white (X,Y,Z) and
+ * recorded the chromaticity of this. The reference white (X,Y,Z) would have
+ * given all three of the scale factors since:
+ *
+ * color-C = color-c * color-scale
+ * white-C = red-C + green-C + blue-C
+ * = red-c*red-scale + green-c*green-scale + blue-c*blue-scale
+ *
+ * But cHRM records only white-x and white-y, so we have lost the white scale
+ * factor:
+ *
+ * white-C = white-c*white-scale
+ *
+ * To handle this the inverse transformation makes an arbitrary assumption
+ * about white-scale:
+ *
+ * Assume: white-Y = 1.0
+ * Hence: white-scale = 1/white-y
+ * Or: red-Y + green-Y + blue-Y = 1.0
+ *
+ * Notice the last statement of the assumption gives an equation in three of
+ * the nine values we want to calculate. 8 more equations come from the
+ * above routine as summarised at the top above (the chromaticity
+ * calculation):
+ *
+ * Given: color-x = color-X / (color-X + color-Y + color-Z)
+ * Hence: (color-x - 1)*color-X + color.x*color-Y + color.x*color-Z = 0
+ *
+ * This is 9 simultaneous equations in the 9 variables "color-C" and can be
+ * solved by Cramer's rule. Cramer's rule requires calculating 10 9x9 matrix
+ * determinants, however this is not as bad as it seems because only 28 of
+ * the total of 90 terms in the various matrices are non-zero. Nevertheless
+ * Cramer's rule is notoriously numerically unstable because the determinant
+ * calculation involves the difference of large, but similar, numbers. It is
+ * difficult to be sure that the calculation is stable for real world values
+ * and it is certain that it becomes unstable where the end points are close
+ * together.
+ *
+ * So this code uses the perhaps slightly less optimal but more
+ * understandable and totally obvious approach of calculating color-scale.
+ *
+ * This algorithm depends on the precision in white-scale and that is
+ * (1/white-y), so we can immediately see that as white-y approaches 0 the
+ * accuracy inherent in the cHRM chunk drops off substantially.
+ *
+ * libpng arithmetic: a simple invertion of the above equations
+ * ------------------------------------------------------------
+ *
+ * white_scale = 1/white-y
+ * white-X = white-x * white-scale
+ * white-Y = 1.0
+ * white-Z = (1 - white-x - white-y) * white_scale
+ *
+ * white-C = red-C + green-C + blue-C
+ * = red-c*red-scale + green-c*green-scale + blue-c*blue-scale
+ *
+ * This gives us three equations in (red-scale,green-scale,blue-scale) where
+ * all the coefficients are now known:
+ *
+ * red-x*red-scale + green-x*green-scale + blue-x*blue-scale
+ * = white-x/white-y
+ * red-y*red-scale + green-y*green-scale + blue-y*blue-scale = 1
+ * red-z*red-scale + green-z*green-scale + blue-z*blue-scale
+ * = (1 - white-x - white-y)/white-y
+ *
+ * In the last equation color-z is (1 - color-x - color-y) so we can add all
+ * three equations together to get an alternative third:
+ *
+ * red-scale + green-scale + blue-scale = 1/white-y = white-scale
+ *
+ * So now we have a Cramer's rule solution where the determinants are just
+ * 3x3 - far more tractible. Unfortunately 3x3 determinants still involve
+ * multiplication of three coefficients so we can't guarantee to avoid
+ * overflow in the libpng fixed point representation. Using Cramer's rule in
+ * floating point is probably a good choice here, but it's not an option for
+ * fixed point. Instead proceed to simplify the first two equations by
+ * eliminating what is likely to be the largest value, blue-scale:
+ *
+ * blue-scale = white-scale - red-scale - green-scale
+ *
+ * Hence:
+ *
+ * (red-x - blue-x)*red-scale + (green-x - blue-x)*green-scale =
+ * (white-x - blue-x)*white-scale
+ *
+ * (red-y - blue-y)*red-scale + (green-y - blue-y)*green-scale =
+ * 1 - blue-y*white-scale
+ *
+ * And now we can trivially solve for (red-scale,green-scale):
+ *
+ * green-scale =
+ * (white-x - blue-x)*white-scale - (red-x - blue-x)*red-scale
+ * -----------------------------------------------------------
+ * green-x - blue-x
+ *
+ * red-scale =
+ * 1 - blue-y*white-scale - (green-y - blue-y) * green-scale
+ * ---------------------------------------------------------
+ * red-y - blue-y
+ *
+ * Hence:
+ *
+ * red-scale =
+ * ( (green-x - blue-x) * (white-y - blue-y) -
+ * (green-y - blue-y) * (white-x - blue-x) ) / white-y
+ * -------------------------------------------------------------------------
+ * (green-x - blue-x)*(red-y - blue-y)-(green-y - blue-y)*(red-x - blue-x)
+ *
+ * green-scale =
+ * ( (red-y - blue-y) * (white-x - blue-x) -
+ * (red-x - blue-x) * (white-y - blue-y) ) / white-y
+ * -------------------------------------------------------------------------
+ * (green-x - blue-x)*(red-y - blue-y)-(green-y - blue-y)*(red-x - blue-x)
+ *
+ * Accuracy:
+ * The input values have 5 decimal digits of accuracy. The values are all in
+ * the range 0 < value < 1, so simple products are in the same range but may
+ * need up to 10 decimal digits to preserve the original precision and avoid
+ * underflow. Because we are using a 32-bit signed representation we cannot
+ * match this; the best is a little over 9 decimal digits, less than 10.
+ *
+ * The approach used here is to preserve the maximum precision within the
+ * signed representation. Because the red-scale calculation above uses the
+ * difference between two products of values that must be in the range -1..+1
+ * it is sufficient to divide the product by 7; ceil(100,000/32767*2). The
+ * factor is irrelevant in the calculation because it is applied to both
+ * numerator and denominator.
+ *
+ * Note that the values of the differences of the products of the
+ * chromaticities in the above equations tend to be small, for example for
+ * the sRGB chromaticities they are:
+ *
+ * red numerator: -0.04751
+ * green numerator: -0.08788
+ * denominator: -0.2241 (without white-y multiplication)
+ *
+ * The resultant Y coefficients from the chromaticities of some widely used
+ * color space definitions are (to 15 decimal places):
+ *
+ * sRGB
+ * 0.212639005871510 0.715168678767756 0.072192315360734
+ * Kodak ProPhoto
+ * 0.288071128229293 0.711843217810102 0.000085653960605
+ * Adobe RGB
+ * 0.297344975250536 0.627363566255466 0.075291458493998
+ * Adobe Wide Gamut RGB
+ * 0.258728243040113 0.724682314948566 0.016589442011321
+ */
+ /* By the argument, above overflow should be impossible here. The return
+ * value of 2 indicates an internal error to the caller.
+ */
+ if (!png_muldiv(&left, xy->greenx-xy->bluex, xy->redy - xy->bluey, 7))
+ return 2;
+ if (!png_muldiv(&right, xy->greeny-xy->bluey, xy->redx - xy->bluex, 7))
+ return 2;
+ denominator = left - right;
+
+ /* Now find the red numerator. */
+ if (!png_muldiv(&left, xy->greenx-xy->bluex, xy->whitey-xy->bluey, 7))
+ return 2;
+ if (!png_muldiv(&right, xy->greeny-xy->bluey, xy->whitex-xy->bluex, 7))
+ return 2;
+
+ /* Overflow is possible here and it indicates an extreme set of PNG cHRM
+ * chunk values. This calculation actually returns the reciprocal of the
+ * scale value because this allows us to delay the multiplication of white-y
+ * into the denominator, which tends to produce a small number.
+ */
+ if (!png_muldiv(&red_inverse, xy->whitey, denominator, left-right) ||
+ red_inverse <= xy->whitey /* r+g+b scales = white scale */)
+ return 1;
+
+ /* Similarly for green_inverse: */
+ if (!png_muldiv(&left, xy->redy-xy->bluey, xy->whitex-xy->bluex, 7))
+ return 2;
+ if (!png_muldiv(&right, xy->redx-xy->bluex, xy->whitey-xy->bluey, 7))
+ return 2;
+ if (!png_muldiv(&green_inverse, xy->whitey, denominator, left-right) ||
+ green_inverse <= xy->whitey)
+ return 1;
+
+ /* And the blue scale, the checks above guarantee this can't overflow but it
+ * can still produce 0 for extreme cHRM values.
+ */
+ blue_scale = png_reciprocal(xy->whitey) - png_reciprocal(red_inverse) -
+ png_reciprocal(green_inverse);
+ if (blue_scale <= 0) return 1;
+
+
+ /* And fill in the png_XYZ: */
+ if (!png_muldiv(&XYZ->red_X, xy->redx, PNG_FP_1, red_inverse)) return 1;
+ if (!png_muldiv(&XYZ->red_Y, xy->redy, PNG_FP_1, red_inverse)) return 1;
+ if (!png_muldiv(&XYZ->red_Z, PNG_FP_1 - xy->redx - xy->redy, PNG_FP_1,
+ red_inverse))
+ return 1;
+
+ if (!png_muldiv(&XYZ->green_X, xy->greenx, PNG_FP_1, green_inverse))
+ return 1;
+ if (!png_muldiv(&XYZ->green_Y, xy->greeny, PNG_FP_1, green_inverse))
+ return 1;
+ if (!png_muldiv(&XYZ->green_Z, PNG_FP_1 - xy->greenx - xy->greeny, PNG_FP_1,
+ green_inverse))
+ return 1;
+
+ if (!png_muldiv(&XYZ->blue_X, xy->bluex, blue_scale, PNG_FP_1)) return 1;
+ if (!png_muldiv(&XYZ->blue_Y, xy->bluey, blue_scale, PNG_FP_1)) return 1;
+ if (!png_muldiv(&XYZ->blue_Z, PNG_FP_1 - xy->bluex - xy->bluey, blue_scale,
+ PNG_FP_1))
+ return 1;
+
+ return 0; /*success*/
+}
+
+static int
+png_XYZ_normalize(png_XYZ *XYZ)
+{
+ png_int_32 Y;
+
+ if (XYZ->red_Y < 0 || XYZ->green_Y < 0 || XYZ->blue_Y < 0 ||
+ XYZ->red_X < 0 || XYZ->green_X < 0 || XYZ->blue_X < 0 ||
+ XYZ->red_Z < 0 || XYZ->green_Z < 0 || XYZ->blue_Z < 0)
+ return 1;
+
+ /* Normalize by scaling so the sum of the end-point Y values is PNG_FP_1.
+ * IMPLEMENTATION NOTE: ANSI requires signed overflow not to occur, therefore
+ * relying on addition of two positive values producing a negative one is not
+ * safe.
+ */
+ Y = XYZ->red_Y;
+ if (0x7fffffff - Y < XYZ->green_X) return 1;
+ Y += XYZ->green_Y;
+ if (0x7fffffff - Y < XYZ->blue_X) return 1;
+ Y += XYZ->blue_Y;
+
+ if (Y != PNG_FP_1)
+ {
+ if (!png_muldiv(&XYZ->red_X, XYZ->red_X, PNG_FP_1, Y)) return 1;
+ if (!png_muldiv(&XYZ->red_Y, XYZ->red_Y, PNG_FP_1, Y)) return 1;
+ if (!png_muldiv(&XYZ->red_Z, XYZ->red_Z, PNG_FP_1, Y)) return 1;
+
+ if (!png_muldiv(&XYZ->green_X, XYZ->green_X, PNG_FP_1, Y)) return 1;
+ if (!png_muldiv(&XYZ->green_Y, XYZ->green_Y, PNG_FP_1, Y)) return 1;
+ if (!png_muldiv(&XYZ->green_Z, XYZ->green_Z, PNG_FP_1, Y)) return 1;
+
+ if (!png_muldiv(&XYZ->blue_X, XYZ->blue_X, PNG_FP_1, Y)) return 1;
+ if (!png_muldiv(&XYZ->blue_Y, XYZ->blue_Y, PNG_FP_1, Y)) return 1;
+ if (!png_muldiv(&XYZ->blue_Z, XYZ->blue_Z, PNG_FP_1, Y)) return 1;
+ }
+
+ return 0;
+}
+
+static int
+png_colorspace_endpoints_match(const png_xy *xy1, const png_xy *xy2, int delta)
+{
+ /* Allow an error of +/-0.01 (absolute value) on each chromaticity */
+ return !(PNG_OUT_OF_RANGE(xy1->whitex, xy2->whitex,delta) ||
+ PNG_OUT_OF_RANGE(xy1->whitey, xy2->whitey,delta) ||
+ PNG_OUT_OF_RANGE(xy1->redx, xy2->redx, delta) ||
+ PNG_OUT_OF_RANGE(xy1->redy, xy2->redy, delta) ||
+ PNG_OUT_OF_RANGE(xy1->greenx, xy2->greenx,delta) ||
+ PNG_OUT_OF_RANGE(xy1->greeny, xy2->greeny,delta) ||
+ PNG_OUT_OF_RANGE(xy1->bluex, xy2->bluex, delta) ||
+ PNG_OUT_OF_RANGE(xy1->bluey, xy2->bluey, delta));
+}
+
+/* Added in libpng-1.6.0, a different check for the validity of a set of cHRM
+ * chunk chromaticities. Earlier checks used to simply look for the overflow
+ * condition (where the determinant of the matrix to solve for XYZ ends up zero
+ * because the chromaticity values are not all distinct.) Despite this it is
+ * theoretically possible to produce chromaticities that are apparently valid
+ * but that rapidly degrade to invalid, potentially crashing, sets because of
+ * arithmetic inaccuracies when calculations are performed on them. The new
+ * check is to round-trip xy -> XYZ -> xy and then check that the result is
+ * within a small percentage of the original.
+ */
+static int
+png_colorspace_check_xy(png_XYZ *XYZ, const png_xy *xy)
+{
+ int result;
+ png_xy xy_test;
+
+ /* As a side-effect this routine also returns the XYZ endpoints. */
+ result = png_XYZ_from_xy(XYZ, xy);
+ if (result) return result;
+
+ result = png_xy_from_XYZ(&xy_test, XYZ);
+ if (result) return result;
+
+ if (png_colorspace_endpoints_match(xy, &xy_test,
+ 5/*actually, the math is pretty accurate*/))
+ return 0;
+
+ /* Too much slip */
+ return 1;
+}
+
+/* This is the check going the other way. The XYZ is modified to normalize it
+ * (another side-effect) and the xy chromaticities are returned.
+ */
+static int
+png_colorspace_check_XYZ(png_xy *xy, png_XYZ *XYZ)
+{
+ int result;
+ png_XYZ XYZtemp;
+
+ result = png_XYZ_normalize(XYZ);
+ if (result) return result;
+
+ result = png_xy_from_XYZ(xy, XYZ);
+ if (result) return result;
+
+ XYZtemp = *XYZ;
+ return png_colorspace_check_xy(&XYZtemp, xy);
+}
+
+/* Used to check for an endpoint match against sRGB */
+static const png_xy sRGB_xy = /* From ITU-R BT.709-3 */
+{
+ /* color x y */
+ /* red */ 64000, 33000,
+ /* green */ 30000, 60000,
+ /* blue */ 15000, 6000,
+ /* white */ 31270, 32900
+};
+
+static int
+png_colorspace_set_xy_and_XYZ(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, const png_xy *xy, const png_XYZ *XYZ,
+ int preferred)
+{
+ if (colorspace->flags & PNG_COLORSPACE_INVALID)
+ return 0;
+
+ /* The consistency check is performed on the chromaticities; this factors out
+ * variations because of the normalization (or not) of the end point Y
+ * values.
+ */
+ if (preferred < 2 && (colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ {
+ /* The end points must be reasonably close to any we already have. The
+ * following allows an error of up to +/-.001
+ */
+ if (!png_colorspace_endpoints_match(xy, &colorspace->end_points_xy, 100))
+ {
+ colorspace->flags |= PNG_COLORSPACE_INVALID;
+ png_benign_error(png_ptr, "inconsistent chromaticities");
+ return 0; /* failed */
+ }
+
+ /* Only overwrite with preferred values */
+ if (!preferred)
+ return 1; /* ok, but no change */
+ }
+
+ colorspace->end_points_xy = *xy;
+ colorspace->end_points_XYZ = *XYZ;
+ colorspace->flags |= PNG_COLORSPACE_HAVE_ENDPOINTS;
+
+ /* The end points are normally quoted to two decimal digits, so allow +/-0.01
+ * on this test.
+ */
+ if (png_colorspace_endpoints_match(xy, &sRGB_xy, 1000))
+ colorspace->flags |= PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB;
+
+ else
+ colorspace->flags &= PNG_COLORSPACE_CANCEL(
+ PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB);
+
+ return 2; /* ok and changed */
+}
+
+int /* PRIVATE */
+png_colorspace_set_chromaticities(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, const png_xy *xy, int preferred)
+{
+ /* We must check the end points to ensure they are reasonable - in the past
+ * color management systems have crashed as a result of getting bogus
+ * colorant values, while this isn't the fault of libpng it is the
+ * responsibility of libpng because PNG carries the bomb and libpng is in a
+ * position to protect against it.
+ */
+ png_XYZ XYZ;
+
+ switch (png_colorspace_check_xy(&XYZ, xy))
+ {
+ case 0: /* success */
+ return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, xy, &XYZ,
+ preferred);
+
+ case 1:
+ /* We can't invert the chromaticities so we can't produce value XYZ
+ * values. Likely as not a color management system will fail too.
+ */
+ colorspace->flags |= PNG_COLORSPACE_INVALID;
+ png_benign_error(png_ptr, "invalid chromaticities");
+ break;
+
+ default:
+ /* libpng is broken; this should be a warning but if it happens we
+ * want error reports so for the moment it is an error.
+ */
+ colorspace->flags |= PNG_COLORSPACE_INVALID;
+ png_error(png_ptr, "internal error checking chromaticities");
+ break;
+ }
+
+ return 0; /* failed */
+}
+
+int /* PRIVATE */
+png_colorspace_set_endpoints(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, const png_XYZ *XYZ_in, int preferred)
+{
+ png_XYZ XYZ = *XYZ_in;
+ png_xy xy;
+
+ switch (png_colorspace_check_XYZ(&xy, &XYZ))
+ {
+ case 0:
+ return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, &xy, &XYZ,
+ preferred);
+
+ case 1:
+ /* End points are invalid. */
+ colorspace->flags |= PNG_COLORSPACE_INVALID;
+ png_benign_error(png_ptr, "invalid end points");
+ break;
+
+ default:
+ colorspace->flags |= PNG_COLORSPACE_INVALID;
+ png_error(png_ptr, "internal error checking chromaticities");
+ break;
+ }
+
+ return 0; /* failed */
+}
+
+#if defined(PNG_sRGB_SUPPORTED) || defined(PNG_iCCP_SUPPORTED)
+/* Error message generation */
+static char
+png_icc_tag_char(png_uint_32 byte)
+{
+ byte &= 0xff;
+ if (byte >= 32 && byte <= 126)
+ return (char)byte;
+ else
+ return '?';
+}
+
+static void
+png_icc_tag_name(char *name, png_uint_32 tag)
+{
+ name[0] = '\'';
+ name[1] = png_icc_tag_char(tag >> 24);
+ name[2] = png_icc_tag_char(tag >> 16);
+ name[3] = png_icc_tag_char(tag >> 8);
+ name[4] = png_icc_tag_char(tag );
+ name[5] = '\'';
+}
+
+static int
+is_ICC_signature_char(png_alloc_size_t it)
+{
+ return it == 32 || (it >= 48 && it <= 57) || (it >= 65 && it <= 90) ||
+ (it >= 97 && it <= 122);
+}
+
+static int is_ICC_signature(png_alloc_size_t it)
+{
+ return is_ICC_signature_char(it >> 24) /* checks all the top bits */ &&
+ is_ICC_signature_char((it >> 16) & 0xff) &&
+ is_ICC_signature_char((it >> 8) & 0xff) &&
+ is_ICC_signature_char(it & 0xff);
+}
+
+static int
+png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
+ png_const_charp name, png_alloc_size_t value, png_const_charp reason)
+{
+ size_t pos;
+ char message[196]; /* see below for calculation */
+
+ if (colorspace != NULL)
+ colorspace->flags |= PNG_COLORSPACE_INVALID;
+
+ pos = png_safecat(message, (sizeof message), 0, "profile '"); /* 9 chars */
+ pos = png_safecat(message, pos+79, pos, name); /* Truncate to 79 chars */
+ pos = png_safecat(message, (sizeof message), pos, "': "); /* +2 = 90 */
+ if (is_ICC_signature(value))
+ {
+ /* So 'value' is at most 4 bytes and the following cast is safe */
+ png_icc_tag_name(message+pos, (png_uint_32)value);
+ pos += 6; /* total +8; less than the else clause */
+ message[pos++] = ':';
+ message[pos++] = ' ';
+ }
+# ifdef PNG_WARNINGS_SUPPORTED
+ else
+ {
+ char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114*/
+
+ pos = png_safecat(message, (sizeof message), pos,
+ png_format_number(number, number+(sizeof number),
+ PNG_NUMBER_FORMAT_x, value));
+ pos = png_safecat(message, (sizeof message), pos, "h: "); /*+2 = 116*/
+ }
+# endif
+ /* The 'reason' is an arbitrary message, allow +79 maximum 195 */
+ pos = png_safecat(message, (sizeof message), pos, reason);
+
+ /* This is recoverable, but make it unconditionally an app_error on write to
+ * avoid writing invalid ICC profiles into PNG files. (I.e. we handle them
+ * on read, with a warning, but on write unless the app turns off
+ * application errors the PNG won't be written.)
+ */
+ png_chunk_report(png_ptr, message,
+ (colorspace != NULL) ? PNG_CHUNK_ERROR : PNG_CHUNK_WRITE_ERROR);
+
+ return 0;
+}
+#endif /* sRGB || iCCP */
+
+#ifdef PNG_sRGB_SUPPORTED
+int /* PRIVATE */
+png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
+ int intent)
+{
+ /* sRGB sets known gamma, end points and (from the chunk) intent. */
+ /* IMPORTANT: these are not necessarily the values found in an ICC profile
+ * because ICC profiles store values adapted to a D50 environment; it is
+ * expected that the ICC profile mediaWhitePointTag will be D50, see the
+ * checks and code elsewhere to understand this better.
+ *
+ * These XYZ values, which are accurate to 5dp, produce rgb to gray
+ * coefficients of (6968,23435,2366), which are reduced (because they add up
+ * to 32769 not 32768) to (6968,23434,2366). These are the values that
+ * libpng has traditionally used (and are the best values given the 15bit
+ * algorithm used by the rgb to gray code.)
+ */
+ static const png_XYZ sRGB_XYZ = /* D65 XYZ (*not* the D50 adapted values!) */
+ {
+ /* color X Y Z */
+ /* red */ 41239, 21264, 1933,
+ /* green */ 35758, 71517, 11919,
+ /* blue */ 18048, 7219, 95053
+ };
+
+ /* Do nothing if the colorspace is already invalidated. */
+ if (colorspace->flags & PNG_COLORSPACE_INVALID)
+ return 0;
+
+ /* Check the intent, then check for existing settings. It is valid for the
+ * PNG file to have cHRM or gAMA chunks along with sRGB, but the values must
+ * be consistent with the correct values. If, however, this function is
+ * called below because an iCCP chunk matches sRGB then it is quite
+ * conceivable that an older app recorded incorrect gAMA and cHRM because of
+ * an incorrect calculation based on the values in the profile - this does
+ * *not* invalidate the profile (though it still produces an error, which can
+ * be ignored.)
+ */
+ if (intent < 0 || intent >= PNG_sRGB_INTENT_LAST)
+ return png_icc_profile_error(png_ptr, colorspace, "sRGB",
+ (unsigned)intent, "invalid sRGB rendering intent");
+
+ if ((colorspace->flags & PNG_COLORSPACE_HAVE_INTENT) != 0 &&
+ colorspace->rendering_intent != intent)
+ return png_icc_profile_error(png_ptr, colorspace, "sRGB",
+ (unsigned)intent, "inconsistent rendering intents");
+
+ if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0)
+ {
+ png_benign_error(png_ptr, "duplicate sRGB information ignored");
+ return 0;
+ }
+
+ /* If the standard sRGB cHRM chunk does not match the one from the PNG file
+ * warn but overwrite the value with the correct one.
+ */
+ if ((colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0 &&
+ !png_colorspace_endpoints_match(&sRGB_xy, &colorspace->end_points_xy,
+ 100))
+ png_chunk_report(png_ptr, "cHRM chunk does not match sRGB",
+ PNG_CHUNK_ERROR);
+
+ /* This check is just done for the error reporting - the routine always
+ * returns true when the 'from' argument corresponds to sRGB (2).
+ */
+ (void)png_colorspace_check_gamma(png_ptr, colorspace, PNG_GAMMA_sRGB_INVERSE,
+ 2/*from sRGB*/);
+
+ /* intent: bugs in GCC force 'int' to be used as the parameter type. */
+ colorspace->rendering_intent = (png_uint_16)intent;
+ colorspace->flags |= PNG_COLORSPACE_HAVE_INTENT;
+
+ /* endpoints */
+ colorspace->end_points_xy = sRGB_xy;
+ colorspace->end_points_XYZ = sRGB_XYZ;
+ colorspace->flags |=
+ (PNG_COLORSPACE_HAVE_ENDPOINTS|PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB);
+
+ /* gamma */
+ colorspace->gamma = PNG_GAMMA_sRGB_INVERSE;
+ colorspace->flags |= PNG_COLORSPACE_HAVE_GAMMA;
+
+ /* Finally record that we have an sRGB profile */
+ colorspace->flags |=
+ (PNG_COLORSPACE_MATCHES_sRGB|PNG_COLORSPACE_FROM_sRGB);
+
+ return 1; /* set */
+}
+#endif /* sRGB */
+
+#ifdef PNG_iCCP_SUPPORTED
+/* Encoded value of D50 as an ICC XYZNumber. From the ICC 2010 spec the value
+ * is XYZ(0.9642,1.0,0.8249), which scales to:
+ *
+ * (63189.8112, 65536, 54060.6464)
+ */
+static const png_byte D50_nCIEXYZ[12] =
+ { 0x00, 0x00, 0xf6, 0xd6, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0xd3, 0x2d };
+
+int /* PRIVATE */
+png_icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
+ png_const_charp name, png_uint_32 profile_length)
+{
+ if (profile_length < 132)
+ return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
+ "too short");
+
+ if (profile_length & 3)
+ return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
+ "invalid length");
+
+ return 1;
+}
+
+int /* PRIVATE */
+png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
+ png_const_charp name, png_uint_32 profile_length,
+ png_const_bytep profile/* first 132 bytes only */, int color_type)
+{
+ png_uint_32 temp;
+
+ /* Length check; this cannot be ignored in this code because profile_length
+ * is used later to check the tag table, so even if the profile seems over
+ * long profile_length from the caller must be correct. The caller can fix
+ * this up on read or write by just passing in the profile header length.
+ */
+ temp = png_get_uint_32(profile);
+ if (temp != profile_length)
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "length does not match profile");
+
+ temp = png_get_uint_32(profile+128); /* tag count: 12 bytes/tag */
+ if (temp > 357913930 || /* (2^32-4-132)/12: maximum possible tag count */
+ profile_length < 132+12*temp) /* truncated tag table */
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "tag count too large");
+
+ /* The 'intent' must be valid or we can't store it, ICC limits the intent to
+ * 16 bits.
+ */
+ temp = png_get_uint_32(profile+64);
+ if (temp >= 0xffff) /* The ICC limit */
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "invalid rendering intent");
+
+ /* This is just a warning because the profile may be valid in future
+ * versions.
+ */
+ if (temp >= PNG_sRGB_INTENT_LAST)
+ (void)png_icc_profile_error(png_ptr, NULL, name, temp,
+ "intent outside defined range");
+
+ /* At this point the tag table can't be checked because it hasn't necessarily
+ * been loaded; however, various header fields can be checked. These checks
+ * are for values permitted by the PNG spec in an ICC profile; the PNG spec
+ * restricts the profiles that can be passed in an iCCP chunk (they must be
+ * appropriate to processing PNG data!)
+ */
+
+ /* Data checks (could be skipped). These checks must be independent of the
+ * version number; however, the version number doesn't accomodate changes in
+ * the header fields (just the known tags and the interpretation of the
+ * data.)
+ */
+ temp = png_get_uint_32(profile+36); /* signature 'ascp' */
+ if (temp != 0x61637370)
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "invalid signature");
+
+ /* Currently the PCS illuminant/adopted white point (the computational
+ * white point) are required to be D50,
+ * however the profile contains a record of the illuminant so perhaps ICC
+ * expects to be able to change this in the future (despite the rationale in
+ * the introduction for using a fixed PCS adopted white.) Consequently the
+ * following is just a warning.
+ */
+ if (memcmp(profile+68, D50_nCIEXYZ, 12) != 0)
+ (void)png_icc_profile_error(png_ptr, NULL, name, 0/*no tag value*/,
+ "PCS illuminant is not D50");
+
+ /* The PNG spec requires this:
+ * "If the iCCP chunk is present, the image samples conform to the colour
+ * space represented by the embedded ICC profile as defined by the
+ * International Color Consortium [ICC]. The colour space of the ICC profile
+ * shall be an RGB colour space for colour images (PNG colour types 2, 3, and
+ * 6), or a greyscale colour space for greyscale images (PNG colour types 0
+ * and 4)."
+ *
+ * This checking code ensures the embedded profile (on either read or write)
+ * conforms to the specification requirements. Notice that an ICC 'gray'
+ * color-space profile contains the information to transform the monochrome
+ * data to XYZ or L*a*b (according to which PCS the profile uses) and this
+ * should be used in preference to the standard libpng K channel replication
+ * into R, G and B channels.
+ *
+ * Previously it was suggested that an RGB profile on grayscale data could be
+ * handled. However it it is clear that using an RGB profile in this context
+ * must be an error - there is no specification of what it means. Thus it is
+ * almost certainly more correct to ignore the profile.
+ */
+ temp = png_get_uint_32(profile+16); /* data colour space field */
+ switch (temp)
+ {
+ case 0x52474220: /* 'RGB ' */
+ if (!(color_type & PNG_COLOR_MASK_COLOR))
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "RGB color space not permitted on grayscale PNG");
+ break;
+
+ case 0x47524159: /* 'GRAY' */
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "Gray color space not permitted on RGB PNG");
+ break;
+
+ default:
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "invalid ICC profile color space");
+ }
+
+ /* It is up to the application to check that the profile class matches the
+ * application requirements; the spec provides no guidance, but it's pretty
+ * weird if the profile is not scanner ('scnr'), monitor ('mntr'), printer
+ * ('prtr') or 'spac' (for generic color spaces). Issue a warning in these
+ * cases. Issue an error for device link or abstract profiles - these don't
+ * contain the records necessary to transform the color-space to anything
+ * other than the target device (and not even that for an abstract profile).
+ * Profiles of these classes may not be embedded in images.
+ */
+ temp = png_get_uint_32(profile+12); /* profile/device class */
+ switch (temp)
+ {
+ case 0x73636E72: /* 'scnr' */
+ case 0x6D6E7472: /* 'mntr' */
+ case 0x70727472: /* 'prtr' */
+ case 0x73706163: /* 'spac' */
+ /* All supported */
+ break;
+
+ case 0x61627374: /* 'abst' */
+ /* May not be embedded in an image */
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "invalid embedded Abstract ICC profile");
+
+ case 0x6C696E6B: /* 'link' */
+ /* DeviceLink profiles cannnot be interpreted in a non-device specific
+ * fashion, if an app uses the AToB0Tag in the profile the results are
+ * undefined unless the result is sent to the intended device,
+ * therefore a DeviceLink profile should not be found embedded in a
+ * PNG.
+ */
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "unexpected DeviceLink ICC profile class");
+
+ case 0x6E6D636C: /* 'nmcl' */
+ /* A NamedColor profile is also device specific, however it doesn't
+ * contain an AToB0 tag that is open to misintrepretation. Almost
+ * certainly it will fail the tests below.
+ */
+ (void)png_icc_profile_error(png_ptr, NULL, name, temp,
+ "unexpected NamedColor ICC profile class");
+ break;
+
+ default:
+ /* To allow for future enhancements to the profile accept unrecognized
+ * profile classes with a warning, these then hit the test below on the
+ * tag content to ensure they are backward compatible with one of the
+ * understood profiles.
+ */
+ (void)png_icc_profile_error(png_ptr, NULL, name, temp,
+ "unrecognized ICC profile class");
+ break;
+ }
+
+ /* For any profile other than a device link one the PCS must be encoded
+ * either in XYZ or Lab.
+ */
+ temp = png_get_uint_32(profile+20);
+ switch (temp)
+ {
+ case 0x58595A20: /* 'XYZ ' */
+ case 0x4C616220: /* 'Lab ' */
+ break;
+
+ default:
+ return png_icc_profile_error(png_ptr, colorspace, name, temp,
+ "unexpected ICC PCS encoding");
+ }
+
+ return 1;
+}
+
+int /* PRIVATE */
+png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace,
+ png_const_charp name, png_uint_32 profile_length,
+ png_const_bytep profile /* header plus whole tag table */)
+{
+ png_uint_32 tag_count = png_get_uint_32(profile+128);
+ png_uint_32 itag;
+ png_const_bytep tag = profile+132; /* The first tag */
+
+ /* First scan all the tags in the table and add bits to the icc_info value
+ * (temporarily in 'tags').
+ */
+ for (itag=0; itag < tag_count; ++itag, tag += 12)
+ {
+ png_uint_32 tag_id = png_get_uint_32(tag+0);
+ png_uint_32 tag_start = png_get_uint_32(tag+4); /* must be aligned */
+ png_uint_32 tag_length = png_get_uint_32(tag+8);/* not padded */
+
+ /* The ICC specification does not exclude zero length tags, therefore the
+ * start might actually be anywhere if there is no data, but this would be
+ * a clear abuse of the intent of the standard so the start is checked for
+ * being in range. All defined tag types have an 8 byte header - a 4 byte
+ * type signature then 0.
+ */
+ if ((tag_start & 3) != 0)
+ {
+ /* CNHP730S.icc shipped with Microsoft Windows 64 violates this, it is
+ * only a warning here because libpng does not care about the
+ * alignment.
+ */
+ (void)png_icc_profile_error(png_ptr, NULL, name, tag_id,
+ "ICC profile tag start not a multiple of 4");
+ }
+
+ /* This is a hard error; potentially it can cause read outside the
+ * profile.
+ */
+ if (tag_start > profile_length || tag_length > profile_length - tag_start)
+ return png_icc_profile_error(png_ptr, colorspace, name, tag_id,
+ "ICC profile tag outside profile");
+ }
+
+ return 1; /* success, maybe with warnings */
+}
+
+#ifdef PNG_sRGB_SUPPORTED
+/* Information about the known ICC sRGB profiles */
+static const struct
+{
+ png_uint_32 adler, crc, length;
+ png_uint_32 md5[4];
+ png_byte have_md5;
+ png_byte is_broken;
+ png_uint_16 intent;
+
+# define PNG_MD5(a,b,c,d) { a, b, c, d }, (a!=0)||(b!=0)||(c!=0)||(d!=0)
+# define PNG_ICC_CHECKSUM(adler, crc, md5, intent, broke, date, length, fname)\
+ { adler, crc, length, md5, broke, intent },
+
+} png_sRGB_checks[] =
+{
+ /* This data comes from contrib/tools/checksum-icc run on downloads of
+ * all four ICC sRGB profiles from www.color.org.
+ */
+ /* adler32, crc32, MD5[4], intent, date, length, file-name */
+ PNG_ICC_CHECKSUM(0x0a3fd9f6, 0x3b8772b9,
+ PNG_MD5(0x29f83dde, 0xaff255ae, 0x7842fae4, 0xca83390d), 0, 0,
+ "2009/03/27 21:36:31", 3048, "sRGB_IEC61966-2-1_black_scaled.icc")
+
+ /* ICC sRGB v2 perceptual no black-compensation: */
+ PNG_ICC_CHECKSUM(0x4909e5e1, 0x427ebb21,
+ PNG_MD5(0xc95bd637, 0xe95d8a3b, 0x0df38f99, 0xc1320389), 1, 0,
+ "2009/03/27 21:37:45", 3052, "sRGB_IEC61966-2-1_no_black_scaling.icc")
+
+ PNG_ICC_CHECKSUM(0xfd2144a1, 0x306fd8ae,
+ PNG_MD5(0xfc663378, 0x37e2886b, 0xfd72e983, 0x8228f1b8), 0, 0,
+ "2009/08/10 17:28:01", 60988, "sRGB_v4_ICC_preference_displayclass.icc")
+
+ /* ICC sRGB v4 perceptual */
+ PNG_ICC_CHECKSUM(0x209c35d2, 0xbbef7812,
+ PNG_MD5(0x34562abf, 0x994ccd06, 0x6d2c5721, 0xd0d68c5d), 0, 0,
+ "2007/07/25 00:05:37", 60960, "sRGB_v4_ICC_preference.icc")
+
+ /* The following profiles have no known MD5 checksum. If there is a match
+ * on the (empty) MD5 the other fields are used to attempt a match and
+ * a warning is produced. The first two of these profiles have a 'cprt' tag
+ * which suggests that they were also made by Hewlett Packard.
+ */
+ PNG_ICC_CHECKSUM(0xa054d762, 0x5d5129ce,
+ PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 0,
+ "2004/07/21 18:57:42", 3024, "sRGB_IEC61966-2-1_noBPC.icc")
+
+ /* This is a 'mntr' (display) profile with a mediaWhitePointTag that does not
+ * match the D50 PCS illuminant in the header (it is in fact the D65 values,
+ * so the white point is recorded as the un-adapted value.) The profiles
+ * below only differ in one byte - the intent - and are basically the same as
+ * the previous profile except for the mediaWhitePointTag error and a missing
+ * chromaticAdaptationTag.
+ */
+ PNG_ICC_CHECKSUM(0xf784f3fb, 0x182ea552,
+ PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 0, 1/*broken*/,
+ "1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 perceptual")
+
+ PNG_ICC_CHECKSUM(0x0398f3fc, 0xf29e526d,
+ PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 1/*broken*/,
+ "1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 media-relative")
+};
+
+static int
+png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
+ png_const_bytep profile, uLong adler)
+{
+ /* The quick check is to verify just the MD5 signature and trust the
+ * rest of the data. Because the profile has already been verified for
+ * correctness this is safe. png_colorspace_set_sRGB will check the 'intent'
+ * field too, so if the profile has been edited with an intent not defined
+ * by sRGB (but maybe defined by a later ICC specification) the read of
+ * the profile will fail at that point.
+ */
+ png_uint_32 length = 0;
+ png_uint_32 intent = 0x10000; /* invalid */
+#if PNG_sRGB_PROFILE_CHECKS > 1
+ uLong crc = 0; /* the value for 0 length data */
+#endif
+ unsigned int i;
+
+ for (i=0; i < (sizeof png_sRGB_checks) / (sizeof png_sRGB_checks[0]); ++i)
+ {
+ if (png_get_uint_32(profile+84) == png_sRGB_checks[i].md5[0] &&
+ png_get_uint_32(profile+88) == png_sRGB_checks[i].md5[1] &&
+ png_get_uint_32(profile+92) == png_sRGB_checks[i].md5[2] &&
+ png_get_uint_32(profile+96) == png_sRGB_checks[i].md5[3])
+ {
+ /* This may be one of the old HP profiles without an MD5, in that
+ * case we can only use the length and Adler32 (note that these
+ * are not used by default if there is an MD5!)
+ */
+# if PNG_sRGB_PROFILE_CHECKS == 0
+ if (png_sRGB_checks[i].have_md5)
+ return 1+png_sRGB_checks[i].is_broken;
+# endif
+
+ /* Profile is unsigned or more checks have been configured in. */
+ if (length == 0)
+ {
+ length = png_get_uint_32(profile);
+ intent = png_get_uint_32(profile+64);
+ }
+
+ /* Length *and* intent must match */
+ if (length == png_sRGB_checks[i].length &&
+ intent == png_sRGB_checks[i].intent)
+ {
+ /* Now calculate the adler32 if not done already. */
+ if (adler == 0)
+ {
+ adler = adler32(0, NULL, 0);
+ adler = adler32(adler, profile, length);
+ }
+
+ if (adler == png_sRGB_checks[i].adler)
+ {
+ /* These basic checks suggest that the data has not been
+ * modified, but if the check level is more than 1 perform
+ * our own crc32 checksum on the data.
+ */
+# if PNG_sRGB_PROFILE_CHECKS > 1
+ if (crc == 0)
+ {
+ crc = crc32(0, NULL, 0);
+ crc = crc32(crc, profile, length);
+ }
+
+ /* So this check must pass for the 'return' below to happen.
+ */
+ if (crc == png_sRGB_checks[i].crc)
+# endif
+ {
+ if (png_sRGB_checks[i].is_broken)
+ {
+ /* These profiles are known to have bad data that may cause
+ * problems if they are used, therefore attempt to
+ * discourage their use, skip the 'have_md5' warning below,
+ * which is made irrelevant by this error.
+ */
+ png_chunk_report(png_ptr, "known incorrect sRGB profile",
+ PNG_CHUNK_ERROR);
+ }
+
+ /* Warn that this being done; this isn't even an error since
+ * the profile is perfectly valid, but it would be nice if
+ * people used the up-to-date ones.
+ */
+ else if (!png_sRGB_checks[i].have_md5)
+ {
+ png_chunk_report(png_ptr,
+ "out-of-date sRGB profile with no signature",
+ PNG_CHUNK_WARNING);
+ }
+
+ return 1+png_sRGB_checks[i].is_broken;
+ }
+ }
+ }
+
+# if PNG_sRGB_PROFILE_CHECKS > 0
+ /* The signature matched, but the profile had been changed in some
+ * way. This is an apparent violation of the ICC terms of use and,
+ * anyway, probably indicates a data error or uninformed hacking.
+ */
+ if (png_sRGB_checks[i].have_md5)
+ png_benign_error(png_ptr,
+ "copyright violation: edited ICC profile ignored");
+# endif
+ }
+ }
+
+ return 0; /* no match */
+}
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+void /* PRIVATE */
+png_icc_set_sRGB(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, png_const_bytep profile, uLong adler)
+{
+ /* Is this profile one of the known ICC sRGB profiles? If it is, just set
+ * the sRGB information.
+ */
+ if (png_compare_ICC_profile_with_sRGB(png_ptr, profile, adler))
+ (void)png_colorspace_set_sRGB(png_ptr, colorspace,
+ (int)/*already checked*/png_get_uint_32(profile+64));
+}
+#endif /* PNG_READ_sRGB_SUPPORTED */
+
+int /* PRIVATE */
+png_colorspace_set_ICC(png_const_structrp png_ptr, png_colorspacerp colorspace,
+ png_const_charp name, png_uint_32 profile_length, png_const_bytep profile,
+ int color_type)
+{
+ if (colorspace->flags & PNG_COLORSPACE_INVALID)
+ return 0;
+
+ if (png_icc_check_length(png_ptr, colorspace, name, profile_length) &&
+ png_icc_check_header(png_ptr, colorspace, name, profile_length, profile,
+ color_type) &&
+ png_icc_check_tag_table(png_ptr, colorspace, name, profile_length,
+ profile))
+ {
+# ifdef PNG_sRGB_SUPPORTED
+ /* If no sRGB support, don't try storing sRGB information */
+ png_icc_set_sRGB(png_ptr, colorspace, profile, 0);
+# endif
+ return 1;
+ }
+
+ /* Failure case */
+ return 0;
+}
+#endif /* iCCP */
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+void /* PRIVATE */
+png_colorspace_set_rgb_coefficients(png_structrp png_ptr)
+{
+ /* Set the rgb_to_gray coefficients from the colorspace. */
+ if (!png_ptr->rgb_to_gray_coefficients_set &&
+ (png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
+ {
+ /* png_set_background has not been called, get the coefficients from the Y
+ * values of the colorspace colorants.
+ */
+ png_fixed_point r = png_ptr->colorspace.end_points_XYZ.red_Y;
+ png_fixed_point g = png_ptr->colorspace.end_points_XYZ.green_Y;
+ png_fixed_point b = png_ptr->colorspace.end_points_XYZ.blue_Y;
+ png_fixed_point total = r+g+b;
+
+ if (total > 0 &&
+ r >= 0 && png_muldiv(&r, r, 32768, total) && r >= 0 && r <= 32768 &&
+ g >= 0 && png_muldiv(&g, g, 32768, total) && g >= 0 && g <= 32768 &&
+ b >= 0 && png_muldiv(&b, b, 32768, total) && b >= 0 && b <= 32768 &&
+ r+g+b <= 32769)
+ {
+ /* We allow 0 coefficients here. r+g+b may be 32769 if two or
+ * all of the coefficients were rounded up. Handle this by
+ * reducing the *largest* coefficient by 1; this matches the
+ * approach used for the default coefficients in pngrtran.c
+ */
+ int add = 0;
+
+ if (r+g+b > 32768)
+ add = -1;
+ else if (r+g+b < 32768)
+ add = 1;
+
+ if (add != 0)
+ {
+ if (g >= r && g >= b)
+ g += add;
+ else if (r >= g && r >= b)
+ r += add;
+ else
+ b += add;
+ }
+
+ /* Check for an internal error. */
+ if (r+g+b != 32768)
+ png_error(png_ptr,
+ "internal error handling cHRM coefficients");
+
+ else
+ {
+ png_ptr->rgb_to_gray_red_coeff = (png_uint_16)r;
+ png_ptr->rgb_to_gray_green_coeff = (png_uint_16)g;
+ }
+ }
+
+ /* This is a png_error at present even though it could be ignored -
+ * it should never happen, but it is important that if it does, the
+ * bug is fixed.
+ */
+ else
+ png_error(png_ptr, "internal error handling cHRM->XYZ");
+ }
+}
+#endif
+
+#endif /* COLORSPACE */
+
+void /* PRIVATE */
+png_check_IHDR(png_const_structrp png_ptr,
+ png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_type, int compression_type,
+ int filter_type)
+{
+ int error = 0;
+
+ /* Check for width and height valid values */
+ if (width == 0)
+ {
+ png_warning(png_ptr, "Image width is zero in IHDR");
+ error = 1;
+ }
+
+ if (height == 0)
+ {
+ png_warning(png_ptr, "Image height is zero in IHDR");
+ error = 1;
+ }
+
+# ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (width > png_ptr->user_width_max)
+
+# else
+ if (width > PNG_USER_WIDTH_MAX)
+# endif
+ {
+ png_warning(png_ptr, "Image width exceeds user limit in IHDR");
+ error = 1;
+ }
+
+# ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (height > png_ptr->user_height_max)
+# else
+ if (height > PNG_USER_HEIGHT_MAX)
+# endif
+ {
+ png_warning(png_ptr, "Image height exceeds user limit in IHDR");
+ error = 1;
+ }
+
+ if (width > PNG_UINT_31_MAX)
+ {
+ png_warning(png_ptr, "Invalid image width in IHDR");
+ error = 1;
+ }
+
+ if (height > PNG_UINT_31_MAX)
+ {
+ png_warning(png_ptr, "Invalid image height in IHDR");
+ error = 1;
+ }
+
+ if (width > (PNG_UINT_32_MAX
+ >> 3) /* 8-byte RGBA pixels */
+ - 48 /* bigrowbuf hack */
+ - 1 /* filter byte */
+ - 7*8 /* rounding of width to multiple of 8 pixels */
+ - 8) /* extra max_pixel_depth pad */
+ png_warning(png_ptr, "Width is too large for libpng to process pixels");
+
+ /* Check other values */
+ if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
+ bit_depth != 8 && bit_depth != 16)
+ {
+ png_warning(png_ptr, "Invalid bit depth in IHDR");
+ error = 1;
+ }
+
+ if (color_type < 0 || color_type == 1 ||
+ color_type == 5 || color_type > 6)
+ {
+ png_warning(png_ptr, "Invalid color type in IHDR");
+ error = 1;
+ }
+
+ if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
+ ((color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
+ {
+ png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR");
+ error = 1;
+ }
+
+ if (interlace_type >= PNG_INTERLACE_LAST)
+ {
+ png_warning(png_ptr, "Unknown interlace method in IHDR");
+ error = 1;
+ }
+
+ if (compression_type != PNG_COMPRESSION_TYPE_BASE)
+ {
+ png_warning(png_ptr, "Unknown compression method in IHDR");
+ error = 1;
+ }
+
+# ifdef PNG_MNG_FEATURES_SUPPORTED
+ /* Accept filter_method 64 (intrapixel differencing) only if
+ * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
+ * 2. Libpng did not read a PNG signature (this filter_method is only
+ * used in PNG datastreams that are embedded in MNG datastreams) and
+ * 3. The application called png_permit_mng_features with a mask that
+ * included PNG_FLAG_MNG_FILTER_64 and
+ * 4. The filter_method is 64 and
+ * 5. The color_type is RGB or RGBA
+ */
+ if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) &&
+ png_ptr->mng_features_permitted)
+ png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
+
+ if (filter_type != PNG_FILTER_TYPE_BASE)
+ {
+ if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
+ ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) &&
+ (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
+ {
+ png_warning(png_ptr, "Unknown filter method in IHDR");
+ error = 1;
+ }
+
+ if (png_ptr->mode & PNG_HAVE_PNG_SIGNATURE)
+ {
+ png_warning(png_ptr, "Invalid filter method in IHDR");
+ error = 1;
+ }
+ }
+
+# else
+ if (filter_type != PNG_FILTER_TYPE_BASE)
+ {
+ png_warning(png_ptr, "Unknown filter method in IHDR");
+ error = 1;
+ }
+# endif
+
+ if (error == 1)
+ png_error(png_ptr, "Invalid IHDR data");
+}
+
+#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED)
+/* ASCII to fp functions */
+/* Check an ASCII formated floating point value, see the more detailed
+ * comments in pngpriv.h
+ */
+/* The following is used internally to preserve the sticky flags */
+#define png_fp_add(state, flags) ((state) |= (flags))
+#define png_fp_set(state, value) ((state) = (value) | ((state) & PNG_FP_STICKY))
+
+int /* PRIVATE */
+png_check_fp_number(png_const_charp string, png_size_t size, int *statep,
+ png_size_tp whereami)
+{
+ int state = *statep;
+ png_size_t i = *whereami;
+
+ while (i < size)
+ {
+ int type;
+ /* First find the type of the next character */
+ switch (string[i])
+ {
+ case 43: type = PNG_FP_SAW_SIGN; break;
+ case 45: type = PNG_FP_SAW_SIGN + PNG_FP_NEGATIVE; break;
+ case 46: type = PNG_FP_SAW_DOT; break;
+ case 48: type = PNG_FP_SAW_DIGIT; break;
+ case 49: case 50: case 51: case 52:
+ case 53: case 54: case 55: case 56:
+ case 57: type = PNG_FP_SAW_DIGIT + PNG_FP_NONZERO; break;
+ case 69:
+ case 101: type = PNG_FP_SAW_E; break;
+ default: goto PNG_FP_End;
+ }
+
+ /* Now deal with this type according to the current
+ * state, the type is arranged to not overlap the
+ * bits of the PNG_FP_STATE.
+ */
+ switch ((state & PNG_FP_STATE) + (type & PNG_FP_SAW_ANY))
+ {
+ case PNG_FP_INTEGER + PNG_FP_SAW_SIGN:
+ if (state & PNG_FP_SAW_ANY)
+ goto PNG_FP_End; /* not a part of the number */
+
+ png_fp_add(state, type);
+ break;
+
+ case PNG_FP_INTEGER + PNG_FP_SAW_DOT:
+ /* Ok as trailer, ok as lead of fraction. */
+ if (state & PNG_FP_SAW_DOT) /* two dots */
+ goto PNG_FP_End;
+
+ else if (state & PNG_FP_SAW_DIGIT) /* trailing dot? */
+ png_fp_add(state, type);
+
+ else
+ png_fp_set(state, PNG_FP_FRACTION | type);
+
+ break;
+
+ case PNG_FP_INTEGER + PNG_FP_SAW_DIGIT:
+ if (state & PNG_FP_SAW_DOT) /* delayed fraction */
+ png_fp_set(state, PNG_FP_FRACTION | PNG_FP_SAW_DOT);
+
+ png_fp_add(state, type | PNG_FP_WAS_VALID);
+
+ break;
+
+ case PNG_FP_INTEGER + PNG_FP_SAW_E:
+ if ((state & PNG_FP_SAW_DIGIT) == 0)
+ goto PNG_FP_End;
+
+ png_fp_set(state, PNG_FP_EXPONENT);
+
+ break;
+
+ /* case PNG_FP_FRACTION + PNG_FP_SAW_SIGN:
+ goto PNG_FP_End; ** no sign in fraction */
+
+ /* case PNG_FP_FRACTION + PNG_FP_SAW_DOT:
+ goto PNG_FP_End; ** Because SAW_DOT is always set */
+
+ case PNG_FP_FRACTION + PNG_FP_SAW_DIGIT:
+ png_fp_add(state, type | PNG_FP_WAS_VALID);
+ break;
+
+ case PNG_FP_FRACTION + PNG_FP_SAW_E:
+ /* This is correct because the trailing '.' on an
+ * integer is handled above - so we can only get here
+ * with the sequence ".E" (with no preceding digits).
+ */
+ if ((state & PNG_FP_SAW_DIGIT) == 0)
+ goto PNG_FP_End;
+
+ png_fp_set(state, PNG_FP_EXPONENT);
+
+ break;
+
+ case PNG_FP_EXPONENT + PNG_FP_SAW_SIGN:
+ if (state & PNG_FP_SAW_ANY)
+ goto PNG_FP_End; /* not a part of the number */
+
+ png_fp_add(state, PNG_FP_SAW_SIGN);
+
+ break;
+
+ /* case PNG_FP_EXPONENT + PNG_FP_SAW_DOT:
+ goto PNG_FP_End; */
+
+ case PNG_FP_EXPONENT + PNG_FP_SAW_DIGIT:
+ png_fp_add(state, PNG_FP_SAW_DIGIT | PNG_FP_WAS_VALID);
+
+ break;
+
+ /* case PNG_FP_EXPONEXT + PNG_FP_SAW_E:
+ goto PNG_FP_End; */
+
+ default: goto PNG_FP_End; /* I.e. break 2 */
+ }
+
+ /* The character seems ok, continue. */
+ ++i;
+ }
+
+PNG_FP_End:
+ /* Here at the end, update the state and return the correct
+ * return code.
+ */
+ *statep = state;
+ *whereami = i;
+
+ return (state & PNG_FP_SAW_DIGIT) != 0;
+}
+
+
+/* The same but for a complete string. */
+int
+png_check_fp_string(png_const_charp string, png_size_t size)
+{
+ int state=0;
+ png_size_t char_index=0;
+
+ if (png_check_fp_number(string, size, &state, &char_index) &&
+ (char_index == size || string[char_index] == 0))
+ return state /* must be non-zero - see above */;
+
+ return 0; /* i.e. fail */
+}
+#endif /* pCAL or sCAL */
+
+#ifdef PNG_sCAL_SUPPORTED
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+/* Utility used below - a simple accurate power of ten from an integral
+ * exponent.
+ */
+static double
+png_pow10(int power)
+{
+ int recip = 0;
+ double d = 1;
+
+ /* Handle negative exponent with a reciprocal at the end because
+ * 10 is exact whereas .1 is inexact in base 2
+ */
+ if (power < 0)
+ {
+ if (power < DBL_MIN_10_EXP) return 0;
+ recip = 1, power = -power;
+ }
+
+ if (power > 0)
+ {
+ /* Decompose power bitwise. */
+ double mult = 10;
+ do
+ {
+ if (power & 1) d *= mult;
+ mult *= mult;
+ power >>= 1;
+ }
+ while (power > 0);
+
+ if (recip) d = 1/d;
+ }
+ /* else power is 0 and d is 1 */
+
+ return d;
+}
+
+/* Function to format a floating point value in ASCII with a given
+ * precision.
+ */
+void /* PRIVATE */
+png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
+ double fp, unsigned int precision)
+{
+ /* We use standard functions from math.h, but not printf because
+ * that would require stdio. The caller must supply a buffer of
+ * sufficient size or we will png_error. The tests on size and
+ * the space in ascii[] consumed are indicated below.
+ */
+ if (precision < 1)
+ precision = DBL_DIG;
+
+ /* Enforce the limit of the implementation precision too. */
+ if (precision > DBL_DIG+1)
+ precision = DBL_DIG+1;
+
+ /* Basic sanity checks */
+ if (size >= precision+5) /* See the requirements below. */
+ {
+ if (fp < 0)
+ {
+ fp = -fp;
+ *ascii++ = 45; /* '-' PLUS 1 TOTAL 1 */
+ --size;
+ }
+
+ if (fp >= DBL_MIN && fp <= DBL_MAX)
+ {
+ int exp_b10; /* A base 10 exponent */
+ double base; /* 10^exp_b10 */
+
+ /* First extract a base 10 exponent of the number,
+ * the calculation below rounds down when converting
+ * from base 2 to base 10 (multiply by log10(2) -
+ * 0.3010, but 77/256 is 0.3008, so exp_b10 needs to
+ * be increased. Note that the arithmetic shift
+ * performs a floor() unlike C arithmetic - using a
+ * C multiply would break the following for negative
+ * exponents.
+ */
+ (void)frexp(fp, &exp_b10); /* exponent to base 2 */
+
+ exp_b10 = (exp_b10 * 77) >> 8; /* <= exponent to base 10 */
+
+ /* Avoid underflow here. */
+ base = png_pow10(exp_b10); /* May underflow */
+
+ while (base < DBL_MIN || base < fp)
+ {
+ /* And this may overflow. */
+ double test = png_pow10(exp_b10+1);
+
+ if (test <= DBL_MAX)
+ ++exp_b10, base = test;
+
+ else
+ break;
+ }
+
+ /* Normalize fp and correct exp_b10, after this fp is in the
+ * range [.1,1) and exp_b10 is both the exponent and the digit
+ * *before* which the decimal point should be inserted
+ * (starting with 0 for the first digit). Note that this
+ * works even if 10^exp_b10 is out of range because of the
+ * test on DBL_MAX above.
+ */
+ fp /= base;
+ while (fp >= 1) fp /= 10, ++exp_b10;
+
+ /* Because of the code above fp may, at this point, be
+ * less than .1, this is ok because the code below can
+ * handle the leading zeros this generates, so no attempt
+ * is made to correct that here.
+ */
+
+ {
+ int czero, clead, cdigits;
+ char exponent[10];
+
+ /* Allow up to two leading zeros - this will not lengthen
+ * the number compared to using E-n.
+ */
+ if (exp_b10 < 0 && exp_b10 > -3) /* PLUS 3 TOTAL 4 */
+ {
+ czero = -exp_b10; /* PLUS 2 digits: TOTAL 3 */
+ exp_b10 = 0; /* Dot added below before first output. */
+ }
+ else
+ czero = 0; /* No zeros to add */
+
+ /* Generate the digit list, stripping trailing zeros and
+ * inserting a '.' before a digit if the exponent is 0.
+ */
+ clead = czero; /* Count of leading zeros */
+ cdigits = 0; /* Count of digits in list. */
+
+ do
+ {
+ double d;
+
+ fp *= 10;
+ /* Use modf here, not floor and subtract, so that
+ * the separation is done in one step. At the end
+ * of the loop don't break the number into parts so
+ * that the final digit is rounded.
+ */
+ if (cdigits+czero-clead+1 < (int)precision)
+ fp = modf(fp, &d);
+
+ else
+ {
+ d = floor(fp + .5);
+
+ if (d > 9)
+ {
+ /* Rounding up to 10, handle that here. */
+ if (czero > 0)
+ {
+ --czero, d = 1;
+ if (cdigits == 0) --clead;
+ }
+ else
+ {
+ while (cdigits > 0 && d > 9)
+ {
+ int ch = *--ascii;
+
+ if (exp_b10 != (-1))
+ ++exp_b10;
+
+ else if (ch == 46)
+ {
+ ch = *--ascii, ++size;
+ /* Advance exp_b10 to '1', so that the
+ * decimal point happens after the
+ * previous digit.
+ */
+ exp_b10 = 1;
+ }
+
+ --cdigits;
+ d = ch - 47; /* I.e. 1+(ch-48) */
+ }
+
+ /* Did we reach the beginning? If so adjust the
+ * exponent but take into account the leading
+ * decimal point.
+ */
+ if (d > 9) /* cdigits == 0 */
+ {
+ if (exp_b10 == (-1))
+ {
+ /* Leading decimal point (plus zeros?), if
+ * we lose the decimal point here it must
+ * be reentered below.
+ */
+ int ch = *--ascii;
+
+ if (ch == 46)
+ ++size, exp_b10 = 1;
+
+ /* Else lost a leading zero, so 'exp_b10' is
+ * still ok at (-1)
+ */
+ }
+ else
+ ++exp_b10;
+
+ /* In all cases we output a '1' */
+ d = 1;
+ }
+ }
+ }
+ fp = 0; /* Guarantees termination below. */
+ }
+
+ if (d == 0)
+ {
+ ++czero;
+ if (cdigits == 0) ++clead;
+ }
+ else
+ {
+ /* Included embedded zeros in the digit count. */
+ cdigits += czero - clead;
+ clead = 0;
+
+ while (czero > 0)
+ {
+ /* exp_b10 == (-1) means we just output the decimal
+ * place - after the DP don't adjust 'exp_b10' any
+ * more!
+ */
+ if (exp_b10 != (-1))
+ {
+ if (exp_b10 == 0) *ascii++ = 46, --size;
+ /* PLUS 1: TOTAL 4 */
+ --exp_b10;
+ }
+ *ascii++ = 48, --czero;
+ }
+
+ if (exp_b10 != (-1))
+ {
+ if (exp_b10 == 0) *ascii++ = 46, --size; /* counted
+ above */
+ --exp_b10;
+ }
+ *ascii++ = (char)(48 + (int)d), ++cdigits;
+ }
+ }
+ while (cdigits+czero-clead < (int)precision && fp > DBL_MIN);
+
+ /* The total output count (max) is now 4+precision */
+
+ /* Check for an exponent, if we don't need one we are
+ * done and just need to terminate the string. At
+ * this point exp_b10==(-1) is effectively if flag - it got
+ * to '-1' because of the decrement after outputing
+ * the decimal point above (the exponent required is
+ * *not* -1!)
+ */
+ if (exp_b10 >= (-1) && exp_b10 <= 2)
+ {
+ /* The following only happens if we didn't output the
+ * leading zeros above for negative exponent, so this
+ * doest add to the digit requirement. Note that the
+ * two zeros here can only be output if the two leading
+ * zeros were *not* output, so this doesn't increase
+ * the output count.
+ */
+ while (--exp_b10 >= 0) *ascii++ = 48;
+
+ *ascii = 0;
+
+ /* Total buffer requirement (including the '\0') is
+ * 5+precision - see check at the start.
+ */
+ return;
+ }
+
+ /* Here if an exponent is required, adjust size for
+ * the digits we output but did not count. The total
+ * digit output here so far is at most 1+precision - no
+ * decimal point and no leading or trailing zeros have
+ * been output.
+ */
+ size -= cdigits;
+
+ *ascii++ = 69, --size; /* 'E': PLUS 1 TOTAL 2+precision */
+
+ /* The following use of an unsigned temporary avoids ambiguities in
+ * the signed arithmetic on exp_b10 and permits GCC at least to do
+ * better optimization.
+ */
+ {
+ unsigned int uexp_b10;
+
+ if (exp_b10 < 0)
+ {
+ *ascii++ = 45, --size; /* '-': PLUS 1 TOTAL 3+precision */
+ uexp_b10 = -exp_b10;
+ }
+
+ else
+ uexp_b10 = exp_b10;
+
+ cdigits = 0;
+
+ while (uexp_b10 > 0)
+ {
+ exponent[cdigits++] = (char)(48 + uexp_b10 % 10);
+ uexp_b10 /= 10;
+ }
+ }
+
+ /* Need another size check here for the exponent digits, so
+ * this need not be considered above.
+ */
+ if ((int)size > cdigits)
+ {
+ while (cdigits > 0) *ascii++ = exponent[--cdigits];
+
+ *ascii = 0;
+
+ return;
+ }
+ }
+ }
+ else if (!(fp >= DBL_MIN))
+ {
+ *ascii++ = 48; /* '0' */
+ *ascii = 0;
+ return;
+ }
+ else
+ {
+ *ascii++ = 105; /* 'i' */
+ *ascii++ = 110; /* 'n' */
+ *ascii++ = 102; /* 'f' */
+ *ascii = 0;
+ return;
+ }
+ }
+
+ /* Here on buffer too small. */
+ png_error(png_ptr, "ASCII conversion buffer too small");
+}
+
+# endif /* FLOATING_POINT */
+
+# ifdef PNG_FIXED_POINT_SUPPORTED
+/* Function to format a fixed point value in ASCII.
+ */
+void /* PRIVATE */
+png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
+ png_size_t size, png_fixed_point fp)
+{
+ /* Require space for 10 decimal digits, a decimal point, a minus sign and a
+ * trailing \0, 13 characters:
+ */
+ if (size > 12)
+ {
+ png_uint_32 num;
+
+ /* Avoid overflow here on the minimum integer. */
+ if (fp < 0)
+ *ascii++ = 45, --size, num = -fp;
+ else
+ num = fp;
+
+ if (num <= 0x80000000) /* else overflowed */
+ {
+ unsigned int ndigits = 0, first = 16 /* flag value */;
+ char digits[10];
+
+ while (num)
+ {
+ /* Split the low digit off num: */
+ unsigned int tmp = num/10;
+ num -= tmp*10;
+ digits[ndigits++] = (char)(48 + num);
+ /* Record the first non-zero digit, note that this is a number
+ * starting at 1, it's not actually the array index.
+ */
+ if (first == 16 && num > 0)
+ first = ndigits;
+ num = tmp;
+ }
+
+ if (ndigits > 0)
+ {
+ while (ndigits > 5) *ascii++ = digits[--ndigits];
+ /* The remaining digits are fractional digits, ndigits is '5' or
+ * smaller at this point. It is certainly not zero. Check for a
+ * non-zero fractional digit:
+ */
+ if (first <= 5)
+ {
+ unsigned int i;
+ *ascii++ = 46; /* decimal point */
+ /* ndigits may be <5 for small numbers, output leading zeros
+ * then ndigits digits to first:
+ */
+ i = 5;
+ while (ndigits < i) *ascii++ = 48, --i;
+ while (ndigits >= first) *ascii++ = digits[--ndigits];
+ /* Don't output the trailing zeros! */
+ }
+ }
+ else
+ *ascii++ = 48;
+
+ /* And null terminate the string: */
+ *ascii = 0;
+ return;
+ }
+ }
+
+ /* Here on buffer too small. */
+ png_error(png_ptr, "ASCII conversion buffer too small");
+}
+# endif /* FIXED_POINT */
+#endif /* READ_SCAL */
+
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && \
+ !defined(PNG_FIXED_POINT_MACRO_SUPPORTED) && \
+ (defined(PNG_gAMA_SUPPORTED) || defined(PNG_cHRM_SUPPORTED) || \
+ defined(PNG_sCAL_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)) || \
+ (defined(PNG_sCAL_SUPPORTED) && \
+ defined(PNG_FLOATING_ARITHMETIC_SUPPORTED))
+png_fixed_point
+png_fixed(png_const_structrp png_ptr, double fp, png_const_charp text)
+{
+ double r = floor(100000 * fp + .5);
+
+ if (r > 2147483647. || r < -2147483648.)
+ png_fixed_error(png_ptr, text);
+
+ return (png_fixed_point)r;
+}
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || \
+ defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED)
+/* muldiv functions */
+/* This API takes signed arguments and rounds the result to the nearest
+ * integer (or, for a fixed point number - the standard argument - to
+ * the nearest .00001). Overflow and divide by zero are signalled in
+ * the result, a boolean - true on success, false on overflow.
+ */
+int
+png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times,
+ png_int_32 divisor)
+{
+ /* Return a * times / divisor, rounded. */
+ if (divisor != 0)
+ {
+ if (a == 0 || times == 0)
+ {
+ *res = 0;
+ return 1;
+ }
+ else
+ {
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = a;
+ r *= times;
+ r /= divisor;
+ r = floor(r+.5);
+
+ /* A png_fixed_point is a 32-bit integer. */
+ if (r <= 2147483647. && r >= -2147483648.)
+ {
+ *res = (png_fixed_point)r;
+ return 1;
+ }
+#else
+ int negative = 0;
+ png_uint_32 A, T, D;
+ png_uint_32 s16, s32, s00;
+
+ if (a < 0)
+ negative = 1, A = -a;
+ else
+ A = a;
+
+ if (times < 0)
+ negative = !negative, T = -times;
+ else
+ T = times;
+
+ if (divisor < 0)
+ negative = !negative, D = -divisor;
+ else
+ D = divisor;
+
+ /* Following can't overflow because the arguments only
+ * have 31 bits each, however the result may be 32 bits.
+ */
+ s16 = (A >> 16) * (T & 0xffff) +
+ (A & 0xffff) * (T >> 16);
+ /* Can't overflow because the a*times bit is only 30
+ * bits at most.
+ */
+ s32 = (A >> 16) * (T >> 16) + (s16 >> 16);
+ s00 = (A & 0xffff) * (T & 0xffff);
+
+ s16 = (s16 & 0xffff) << 16;
+ s00 += s16;
+
+ if (s00 < s16)
+ ++s32; /* carry */
+
+ if (s32 < D) /* else overflow */
+ {
+ /* s32.s00 is now the 64-bit product, do a standard
+ * division, we know that s32 < D, so the maximum
+ * required shift is 31.
+ */
+ int bitshift = 32;
+ png_fixed_point result = 0; /* NOTE: signed */
+
+ while (--bitshift >= 0)
+ {
+ png_uint_32 d32, d00;
+
+ if (bitshift > 0)
+ d32 = D >> (32-bitshift), d00 = D << bitshift;
+
+ else
+ d32 = 0, d00 = D;
+
+ if (s32 > d32)
+ {
+ if (s00 < d00) --s32; /* carry */
+ s32 -= d32, s00 -= d00, result += 1<<bitshift;
+ }
+
+ else
+ if (s32 == d32 && s00 >= d00)
+ s32 = 0, s00 -= d00, result += 1<<bitshift;
+ }
+
+ /* Handle the rounding. */
+ if (s00 >= (D >> 1))
+ ++result;
+
+ if (negative)
+ result = -result;
+
+ /* Check for overflow. */
+ if ((negative && result <= 0) || (!negative && result >= 0))
+ {
+ *res = result;
+ return 1;
+ }
+ }
+#endif
+ }
+ }
+
+ return 0;
+}
+#endif /* READ_GAMMA || INCH_CONVERSIONS */
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)
+/* The following is for when the caller doesn't much care about the
+ * result.
+ */
+png_fixed_point
+png_muldiv_warn(png_const_structrp png_ptr, png_fixed_point a, png_int_32 times,
+ png_int_32 divisor)
+{
+ png_fixed_point result;
+
+ if (png_muldiv(&result, a, times, divisor))
+ return result;
+
+ png_warning(png_ptr, "fixed point overflow ignored");
+ return 0;
+}
+#endif
+
+#ifdef PNG_GAMMA_SUPPORTED /* more fixed point functions for gamma */
+/* Calculate a reciprocal, return 0 on div-by-zero or overflow. */
+png_fixed_point
+png_reciprocal(png_fixed_point a)
+{
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = floor(1E10/a+.5);
+
+ if (r <= 2147483647. && r >= -2147483648.)
+ return (png_fixed_point)r;
+#else
+ png_fixed_point res;
+
+ if (png_muldiv(&res, 100000, 100000, a))
+ return res;
+#endif
+
+ return 0; /* error/overflow */
+}
+
+/* This is the shared test on whether a gamma value is 'significant' - whether
+ * it is worth doing gamma correction.
+ */
+int /* PRIVATE */
+png_gamma_significant(png_fixed_point gamma_val)
+{
+ return gamma_val < PNG_FP_1 - PNG_GAMMA_THRESHOLD_FIXED ||
+ gamma_val > PNG_FP_1 + PNG_GAMMA_THRESHOLD_FIXED;
+}
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* A local convenience routine. */
+static png_fixed_point
+png_product2(png_fixed_point a, png_fixed_point b)
+{
+ /* The required result is 1/a * 1/b; the following preserves accuracy. */
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = a * 1E-5;
+ r *= b;
+ r = floor(r+.5);
+
+ if (r <= 2147483647. && r >= -2147483648.)
+ return (png_fixed_point)r;
+#else
+ png_fixed_point res;
+
+ if (png_muldiv(&res, a, b, 100000))
+ return res;
+#endif
+
+ return 0; /* overflow */
+}
+
+/* The inverse of the above. */
+png_fixed_point
+png_reciprocal2(png_fixed_point a, png_fixed_point b)
+{
+ /* The required result is 1/a * 1/b; the following preserves accuracy. */
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = 1E15/a;
+ r /= b;
+ r = floor(r+.5);
+
+ if (r <= 2147483647. && r >= -2147483648.)
+ return (png_fixed_point)r;
+#else
+ /* This may overflow because the range of png_fixed_point isn't symmetric,
+ * but this API is only used for the product of file and screen gamma so it
+ * doesn't matter that the smallest number it can produce is 1/21474, not
+ * 1/100000
+ */
+ png_fixed_point res = png_product2(a, b);
+
+ if (res != 0)
+ return png_reciprocal(res);
+#endif
+
+ return 0; /* overflow */
+}
+#endif /* READ_GAMMA */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED /* gamma table code */
+#ifndef PNG_FLOATING_ARITHMETIC_SUPPORTED
+/* Fixed point gamma.
+ *
+ * The code to calculate the tables used below can be found in the shell script
+ * contrib/tools/intgamma.sh
+ *
+ * To calculate gamma this code implements fast log() and exp() calls using only
+ * fixed point arithmetic. This code has sufficient precision for either 8-bit
+ * or 16-bit sample values.
+ *
+ * The tables used here were calculated using simple 'bc' programs, but C double
+ * precision floating point arithmetic would work fine.
+ *
+ * 8-bit log table
+ * This is a table of -log(value/255)/log(2) for 'value' in the range 128 to
+ * 255, so it's the base 2 logarithm of a normalized 8-bit floating point
+ * mantissa. The numbers are 32-bit fractions.
+ */
+static const png_uint_32
+png_8bit_l2[128] =
+{
+ 4270715492U, 4222494797U, 4174646467U, 4127164793U, 4080044201U, 4033279239U,
+ 3986864580U, 3940795015U, 3895065449U, 3849670902U, 3804606499U, 3759867474U,
+ 3715449162U, 3671346997U, 3627556511U, 3584073329U, 3540893168U, 3498011834U,
+ 3455425220U, 3413129301U, 3371120137U, 3329393864U, 3287946700U, 3246774933U,
+ 3205874930U, 3165243125U, 3124876025U, 3084770202U, 3044922296U, 3005329011U,
+ 2965987113U, 2926893432U, 2888044853U, 2849438323U, 2811070844U, 2772939474U,
+ 2735041326U, 2697373562U, 2659933400U, 2622718104U, 2585724991U, 2548951424U,
+ 2512394810U, 2476052606U, 2439922311U, 2404001468U, 2368287663U, 2332778523U,
+ 2297471715U, 2262364947U, 2227455964U, 2192742551U, 2158222529U, 2123893754U,
+ 2089754119U, 2055801552U, 2022034013U, 1988449497U, 1955046031U, 1921821672U,
+ 1888774511U, 1855902668U, 1823204291U, 1790677560U, 1758320682U, 1726131893U,
+ 1694109454U, 1662251657U, 1630556815U, 1599023271U, 1567649391U, 1536433567U,
+ 1505374214U, 1474469770U, 1443718700U, 1413119487U, 1382670639U, 1352370686U,
+ 1322218179U, 1292211689U, 1262349810U, 1232631153U, 1203054352U, 1173618059U,
+ 1144320946U, 1115161701U, 1086139034U, 1057251672U, 1028498358U, 999877854U,
+ 971388940U, 943030410U, 914801076U, 886699767U, 858725327U, 830876614U,
+ 803152505U, 775551890U, 748073672U, 720716771U, 693480120U, 666362667U,
+ 639363374U, 612481215U, 585715177U, 559064263U, 532527486U, 506103872U,
+ 479792461U, 453592303U, 427502463U, 401522014U, 375650043U, 349885648U,
+ 324227938U, 298676034U, 273229066U, 247886176U, 222646516U, 197509248U,
+ 172473545U, 147538590U, 122703574U, 97967701U, 73330182U, 48790236U,
+ 24347096U, 0U
+
+#if 0
+ /* The following are the values for 16-bit tables - these work fine for the
+ * 8-bit conversions but produce very slightly larger errors in the 16-bit
+ * log (about 1.2 as opposed to 0.7 absolute error in the final value). To
+ * use these all the shifts below must be adjusted appropriately.
+ */
+ 65166, 64430, 63700, 62976, 62257, 61543, 60835, 60132, 59434, 58741, 58054,
+ 57371, 56693, 56020, 55352, 54689, 54030, 53375, 52726, 52080, 51439, 50803,
+ 50170, 49542, 48918, 48298, 47682, 47070, 46462, 45858, 45257, 44661, 44068,
+ 43479, 42894, 42312, 41733, 41159, 40587, 40020, 39455, 38894, 38336, 37782,
+ 37230, 36682, 36137, 35595, 35057, 34521, 33988, 33459, 32932, 32408, 31887,
+ 31369, 30854, 30341, 29832, 29325, 28820, 28319, 27820, 27324, 26830, 26339,
+ 25850, 25364, 24880, 24399, 23920, 23444, 22970, 22499, 22029, 21562, 21098,
+ 20636, 20175, 19718, 19262, 18808, 18357, 17908, 17461, 17016, 16573, 16132,
+ 15694, 15257, 14822, 14390, 13959, 13530, 13103, 12678, 12255, 11834, 11415,
+ 10997, 10582, 10168, 9756, 9346, 8937, 8531, 8126, 7723, 7321, 6921, 6523,
+ 6127, 5732, 5339, 4947, 4557, 4169, 3782, 3397, 3014, 2632, 2251, 1872, 1495,
+ 1119, 744, 372
+#endif
+};
+
+static png_int_32
+png_log8bit(unsigned int x)
+{
+ unsigned int lg2 = 0;
+ /* Each time 'x' is multiplied by 2, 1 must be subtracted off the final log,
+ * because the log is actually negate that means adding 1. The final
+ * returned value thus has the range 0 (for 255 input) to 7.994 (for 1
+ * input), return -1 for the overflow (log 0) case, - so the result is
+ * always at most 19 bits.
+ */
+ if ((x &= 0xff) == 0)
+ return -1;
+
+ if ((x & 0xf0) == 0)
+ lg2 = 4, x <<= 4;
+
+ if ((x & 0xc0) == 0)
+ lg2 += 2, x <<= 2;
+
+ if ((x & 0x80) == 0)
+ lg2 += 1, x <<= 1;
+
+ /* result is at most 19 bits, so this cast is safe: */
+ return (png_int_32)((lg2 << 16) + ((png_8bit_l2[x-128]+32768)>>16));
+}
+
+/* The above gives exact (to 16 binary places) log2 values for 8-bit images,
+ * for 16-bit images we use the most significant 8 bits of the 16-bit value to
+ * get an approximation then multiply the approximation by a correction factor
+ * determined by the remaining up to 8 bits. This requires an additional step
+ * in the 16-bit case.
+ *
+ * We want log2(value/65535), we have log2(v'/255), where:
+ *
+ * value = v' * 256 + v''
+ * = v' * f
+ *
+ * So f is value/v', which is equal to (256+v''/v') since v' is in the range 128
+ * to 255 and v'' is in the range 0 to 255 f will be in the range 256 to less
+ * than 258. The final factor also needs to correct for the fact that our 8-bit
+ * value is scaled by 255, whereas the 16-bit values must be scaled by 65535.
+ *
+ * This gives a final formula using a calculated value 'x' which is value/v' and
+ * scaling by 65536 to match the above table:
+ *
+ * log2(x/257) * 65536
+ *
+ * Since these numbers are so close to '1' we can use simple linear
+ * interpolation between the two end values 256/257 (result -368.61) and 258/257
+ * (result 367.179). The values used below are scaled by a further 64 to give
+ * 16-bit precision in the interpolation:
+ *
+ * Start (256): -23591
+ * Zero (257): 0
+ * End (258): 23499
+ */
+static png_int_32
+png_log16bit(png_uint_32 x)
+{
+ unsigned int lg2 = 0;
+
+ /* As above, but now the input has 16 bits. */
+ if ((x &= 0xffff) == 0)
+ return -1;
+
+ if ((x & 0xff00) == 0)
+ lg2 = 8, x <<= 8;
+
+ if ((x & 0xf000) == 0)
+ lg2 += 4, x <<= 4;
+
+ if ((x & 0xc000) == 0)
+ lg2 += 2, x <<= 2;
+
+ if ((x & 0x8000) == 0)
+ lg2 += 1, x <<= 1;
+
+ /* Calculate the base logarithm from the top 8 bits as a 28-bit fractional
+ * value.
+ */
+ lg2 <<= 28;
+ lg2 += (png_8bit_l2[(x>>8)-128]+8) >> 4;
+
+ /* Now we need to interpolate the factor, this requires a division by the top
+ * 8 bits. Do this with maximum precision.
+ */
+ x = ((x << 16) + (x >> 9)) / (x >> 8);
+
+ /* Since we divided by the top 8 bits of 'x' there will be a '1' at 1<<24,
+ * the value at 1<<16 (ignoring this) will be 0 or 1; this gives us exactly
+ * 16 bits to interpolate to get the low bits of the result. Round the
+ * answer. Note that the end point values are scaled by 64 to retain overall
+ * precision and that 'lg2' is current scaled by an extra 12 bits, so adjust
+ * the overall scaling by 6-12. Round at every step.
+ */
+ x -= 1U << 24;
+
+ if (x <= 65536U) /* <= '257' */
+ lg2 += ((23591U * (65536U-x)) + (1U << (16+6-12-1))) >> (16+6-12);
+
+ else
+ lg2 -= ((23499U * (x-65536U)) + (1U << (16+6-12-1))) >> (16+6-12);
+
+ /* Safe, because the result can't have more than 20 bits: */
+ return (png_int_32)((lg2 + 2048) >> 12);
+}
+
+/* The 'exp()' case must invert the above, taking a 20-bit fixed point
+ * logarithmic value and returning a 16 or 8-bit number as appropriate. In
+ * each case only the low 16 bits are relevant - the fraction - since the
+ * integer bits (the top 4) simply determine a shift.
+ *
+ * The worst case is the 16-bit distinction between 65535 and 65534, this
+ * requires perhaps spurious accuracty in the decoding of the logarithm to
+ * distinguish log2(65535/65534.5) - 10^-5 or 17 bits. There is little chance
+ * of getting this accuracy in practice.
+ *
+ * To deal with this the following exp() function works out the exponent of the
+ * frational part of the logarithm by using an accurate 32-bit value from the
+ * top four fractional bits then multiplying in the remaining bits.
+ */
+static const png_uint_32
+png_32bit_exp[16] =
+{
+ /* NOTE: the first entry is deliberately set to the maximum 32-bit value. */
+ 4294967295U, 4112874773U, 3938502376U, 3771522796U, 3611622603U, 3458501653U,
+ 3311872529U, 3171459999U, 3037000500U, 2908241642U, 2784941738U, 2666869345U,
+ 2553802834U, 2445529972U, 2341847524U, 2242560872U
+};
+
+/* Adjustment table; provided to explain the numbers in the code below. */
+#if 0
+for (i=11;i>=0;--i){ print i, " ", (1 - e(-(2^i)/65536*l(2))) * 2^(32-i), "\n"}
+ 11 44937.64284865548751208448
+ 10 45180.98734845585101160448
+ 9 45303.31936980687359311872
+ 8 45364.65110595323018870784
+ 7 45395.35850361789624614912
+ 6 45410.72259715102037508096
+ 5 45418.40724413220722311168
+ 4 45422.25021786898173001728
+ 3 45424.17186732298419044352
+ 2 45425.13273269940811464704
+ 1 45425.61317555035558641664
+ 0 45425.85339951654943850496
+#endif
+
+static png_uint_32
+png_exp(png_fixed_point x)
+{
+ if (x > 0 && x <= 0xfffff) /* Else overflow or zero (underflow) */
+ {
+ /* Obtain a 4-bit approximation */
+ png_uint_32 e = png_32bit_exp[(x >> 12) & 0xf];
+
+ /* Incorporate the low 12 bits - these decrease the returned value by
+ * multiplying by a number less than 1 if the bit is set. The multiplier
+ * is determined by the above table and the shift. Notice that the values
+ * converge on 45426 and this is used to allow linear interpolation of the
+ * low bits.
+ */
+ if (x & 0x800)
+ e -= (((e >> 16) * 44938U) + 16U) >> 5;
+
+ if (x & 0x400)
+ e -= (((e >> 16) * 45181U) + 32U) >> 6;
+
+ if (x & 0x200)
+ e -= (((e >> 16) * 45303U) + 64U) >> 7;
+
+ if (x & 0x100)
+ e -= (((e >> 16) * 45365U) + 128U) >> 8;
+
+ if (x & 0x080)
+ e -= (((e >> 16) * 45395U) + 256U) >> 9;
+
+ if (x & 0x040)
+ e -= (((e >> 16) * 45410U) + 512U) >> 10;
+
+ /* And handle the low 6 bits in a single block. */
+ e -= (((e >> 16) * 355U * (x & 0x3fU)) + 256U) >> 9;
+
+ /* Handle the upper bits of x. */
+ e >>= x >> 16;
+ return e;
+ }
+
+ /* Check for overflow */
+ if (x <= 0)
+ return png_32bit_exp[0];
+
+ /* Else underflow */
+ return 0;
+}
+
+static png_byte
+png_exp8bit(png_fixed_point lg2)
+{
+ /* Get a 32-bit value: */
+ png_uint_32 x = png_exp(lg2);
+
+ /* Convert the 32-bit value to 0..255 by multiplying by 256-1, note that the
+ * second, rounding, step can't overflow because of the first, subtraction,
+ * step.
+ */
+ x -= x >> 8;
+ return (png_byte)((x + 0x7fffffU) >> 24);
+}
+
+static png_uint_16
+png_exp16bit(png_fixed_point lg2)
+{
+ /* Get a 32-bit value: */
+ png_uint_32 x = png_exp(lg2);
+
+ /* Convert the 32-bit value to 0..65535 by multiplying by 65536-1: */
+ x -= x >> 16;
+ return (png_uint_16)((x + 32767U) >> 16);
+}
+#endif /* FLOATING_ARITHMETIC */
+
+png_byte
+png_gamma_8bit_correct(unsigned int value, png_fixed_point gamma_val)
+{
+ if (value > 0 && value < 255)
+ {
+# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = floor(255*pow(value/255.,gamma_val*.00001)+.5);
+ return (png_byte)r;
+# else
+ png_int_32 lg2 = png_log8bit(value);
+ png_fixed_point res;
+
+ if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1))
+ return png_exp8bit(res);
+
+ /* Overflow. */
+ value = 0;
+# endif
+ }
+
+ return (png_byte)value;
+}
+
+png_uint_16
+png_gamma_16bit_correct(unsigned int value, png_fixed_point gamma_val)
+{
+ if (value > 0 && value < 65535)
+ {
+# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ double r = floor(65535*pow(value/65535.,gamma_val*.00001)+.5);
+ return (png_uint_16)r;
+# else
+ png_int_32 lg2 = png_log16bit(value);
+ png_fixed_point res;
+
+ if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1))
+ return png_exp16bit(res);
+
+ /* Overflow. */
+ value = 0;
+# endif
+ }
+
+ return (png_uint_16)value;
+}
+
+/* This does the right thing based on the bit_depth field of the
+ * png_struct, interpreting values as 8-bit or 16-bit. While the result
+ * is nominally a 16-bit value if bit depth is 8 then the result is
+ * 8-bit (as are the arguments.)
+ */
+png_uint_16 /* PRIVATE */
+png_gamma_correct(png_structrp png_ptr, unsigned int value,
+ png_fixed_point gamma_val)
+{
+ if (png_ptr->bit_depth == 8)
+ return png_gamma_8bit_correct(value, gamma_val);
+
+ else
+ return png_gamma_16bit_correct(value, gamma_val);
+}
+
+/* Internal function to build a single 16-bit table - the table consists of
+ * 'num' 256 entry subtables, where 'num' is determined by 'shift' - the amount
+ * to shift the input values right (or 16-number_of_signifiant_bits).
+ *
+ * The caller is responsible for ensuring that the table gets cleaned up on
+ * png_error (i.e. if one of the mallocs below fails) - i.e. the *table argument
+ * should be somewhere that will be cleaned.
+ */
+static void
+png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable,
+ PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
+{
+ /* Various values derived from 'shift': */
+ PNG_CONST unsigned int num = 1U << (8U - shift);
+ PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
+ PNG_CONST unsigned int max_by_2 = 1U << (15U-shift);
+ unsigned int i;
+
+ png_uint_16pp table = *ptable =
+ (png_uint_16pp)png_calloc(png_ptr, num * (sizeof (png_uint_16p)));
+
+ for (i = 0; i < num; i++)
+ {
+ png_uint_16p sub_table = table[i] =
+ (png_uint_16p)png_malloc(png_ptr, 256 * (sizeof (png_uint_16)));
+
+ /* The 'threshold' test is repeated here because it can arise for one of
+ * the 16-bit tables even if the others don't hit it.
+ */
+ if (png_gamma_significant(gamma_val))
+ {
+ /* The old code would overflow at the end and this would cause the
+ * 'pow' function to return a result >1, resulting in an
+ * arithmetic error. This code follows the spec exactly; ig is
+ * the recovered input sample, it always has 8-16 bits.
+ *
+ * We want input * 65535/max, rounded, the arithmetic fits in 32
+ * bits (unsigned) so long as max <= 32767.
+ */
+ unsigned int j;
+ for (j = 0; j < 256; j++)
+ {
+ png_uint_32 ig = (j << (8-shift)) + i;
+# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+ /* Inline the 'max' scaling operation: */
+ double d = floor(65535*pow(ig/(double)max, gamma_val*.00001)+.5);
+ sub_table[j] = (png_uint_16)d;
+# else
+ if (shift)
+ ig = (ig * 65535U + max_by_2)/max;
+
+ sub_table[j] = png_gamma_16bit_correct(ig, gamma_val);
+# endif
+ }
+ }
+ else
+ {
+ /* We must still build a table, but do it the fast way. */
+ unsigned int j;
+
+ for (j = 0; j < 256; j++)
+ {
+ png_uint_32 ig = (j << (8-shift)) + i;
+
+ if (shift)
+ ig = (ig * 65535U + max_by_2)/max;
+
+ sub_table[j] = (png_uint_16)ig;
+ }
+ }
+ }
+}
+
+/* NOTE: this function expects the *inverse* of the overall gamma transformation
+ * required.
+ */
+static void
+png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable,
+ PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
+{
+ PNG_CONST unsigned int num = 1U << (8U - shift);
+ PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
+ unsigned int i;
+ png_uint_32 last;
+
+ png_uint_16pp table = *ptable =
+ (png_uint_16pp)png_calloc(png_ptr, num * (sizeof (png_uint_16p)));
+
+ /* 'num' is the number of tables and also the number of low bits of low
+ * bits of the input 16-bit value used to select a table. Each table is
+ * itself index by the high 8 bits of the value.
+ */
+ for (i = 0; i < num; i++)
+ table[i] = (png_uint_16p)png_malloc(png_ptr,
+ 256 * (sizeof (png_uint_16)));
+
+ /* 'gamma_val' is set to the reciprocal of the value calculated above, so
+ * pow(out,g) is an *input* value. 'last' is the last input value set.
+ *
+ * In the loop 'i' is used to find output values. Since the output is
+ * 8-bit there are only 256 possible values. The tables are set up to
+ * select the closest possible output value for each input by finding
+ * the input value at the boundary between each pair of output values
+ * and filling the table up to that boundary with the lower output
+ * value.
+ *
+ * The boundary values are 0.5,1.5..253.5,254.5. Since these are 9-bit
+ * values the code below uses a 16-bit value in i; the values start at
+ * 128.5 (for 0.5) and step by 257, for a total of 254 values (the last
+ * entries are filled with 255). Start i at 128 and fill all 'last'
+ * table entries <= 'max'
+ */
+ last = 0;
+ for (i = 0; i < 255; ++i) /* 8-bit output value */
+ {
+ /* Find the corresponding maximum input value */
+ png_uint_16 out = (png_uint_16)(i * 257U); /* 16-bit output value */
+
+ /* Find the boundary value in 16 bits: */
+ png_uint_32 bound = png_gamma_16bit_correct(out+128U, gamma_val);
+
+ /* Adjust (round) to (16-shift) bits: */
+ bound = (bound * max + 32768U)/65535U + 1U;
+
+ while (last < bound)
+ {
+ table[last & (0xffU >> shift)][last >> (8U - shift)] = out;
+ last++;
+ }
+ }
+
+ /* And fill in the final entries. */
+ while (last < (num << 8))
+ {
+ table[last & (0xff >> shift)][last >> (8U - shift)] = 65535U;
+ last++;
+ }
+}
+
+/* Build a single 8-bit table: same as the 16-bit case but much simpler (and
+ * typically much faster). Note that libpng currently does no sBIT processing
+ * (apparently contrary to the spec) so a 256 entry table is always generated.
+ */
+static void
+png_build_8bit_table(png_structrp png_ptr, png_bytepp ptable,
+ PNG_CONST png_fixed_point gamma_val)
+{
+ unsigned int i;
+ png_bytep table = *ptable = (png_bytep)png_malloc(png_ptr, 256);
+
+ if (png_gamma_significant(gamma_val)) for (i=0; i<256; i++)
+ table[i] = png_gamma_8bit_correct(i, gamma_val);
+
+ else for (i=0; i<256; ++i)
+ table[i] = (png_byte)i;
+}
+
+/* Used from png_read_destroy and below to release the memory used by the gamma
+ * tables.
+ */
+void /* PRIVATE */
+png_destroy_gamma_table(png_structrp png_ptr)
+{
+ png_free(png_ptr, png_ptr->gamma_table);
+ png_ptr->gamma_table = NULL;
+
+ if (png_ptr->gamma_16_table != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_table[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_table);
+ png_ptr->gamma_16_table = NULL;
+ }
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ png_free(png_ptr, png_ptr->gamma_from_1);
+ png_ptr->gamma_from_1 = NULL;
+ png_free(png_ptr, png_ptr->gamma_to_1);
+ png_ptr->gamma_to_1 = NULL;
+
+ if (png_ptr->gamma_16_from_1 != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_from_1[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_from_1);
+ png_ptr->gamma_16_from_1 = NULL;
+ }
+ if (png_ptr->gamma_16_to_1 != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_to_1[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_to_1);
+ png_ptr->gamma_16_to_1 = NULL;
+ }
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+}
+
+/* We build the 8- or 16-bit gamma tables here. Note that for 16-bit
+ * tables, we don't make a full table if we are reducing to 8-bit in
+ * the future. Note also how the gamma_16 tables are segmented so that
+ * we don't need to allocate > 64K chunks for a full 16-bit table.
+ */
+void /* PRIVATE */
+png_build_gamma_table(png_structrp png_ptr, int bit_depth)
+{
+ png_debug(1, "in png_build_gamma_table");
+
+ /* Remove any existing table; this copes with multiple calls to
+ * png_read_update_info. The warning is because building the gamma tables
+ * multiple times is a performance hit - it's harmless but the ability to call
+ * png_read_update_info() multiple times is new in 1.5.6 so it seems sensible
+ * to warn if the app introduces such a hit.
+ */
+ if (png_ptr->gamma_table != NULL || png_ptr->gamma_16_table != NULL)
+ {
+ png_warning(png_ptr, "gamma table being rebuilt");
+ png_destroy_gamma_table(png_ptr);
+ }
+
+ if (bit_depth <= 8)
+ {
+ png_build_8bit_table(png_ptr, &png_ptr->gamma_table,
+ png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
+ png_ptr->screen_gamma) : PNG_FP_1);
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ if (png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY))
+ {
+ png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1,
+ png_reciprocal(png_ptr->colorspace.gamma));
+
+ png_build_8bit_table(png_ptr, &png_ptr->gamma_from_1,
+ png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
+ png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
+ }
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+ }
+ else
+ {
+ png_byte shift, sig_bit;
+
+ if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ {
+ sig_bit = png_ptr->sig_bit.red;
+
+ if (png_ptr->sig_bit.green > sig_bit)
+ sig_bit = png_ptr->sig_bit.green;
+
+ if (png_ptr->sig_bit.blue > sig_bit)
+ sig_bit = png_ptr->sig_bit.blue;
+ }
+ else
+ sig_bit = png_ptr->sig_bit.gray;
+
+ /* 16-bit gamma code uses this equation:
+ *
+ * ov = table[(iv & 0xff) >> gamma_shift][iv >> 8]
+ *
+ * Where 'iv' is the input color value and 'ov' is the output value -
+ * pow(iv, gamma).
+ *
+ * Thus the gamma table consists of up to 256 256 entry tables. The table
+ * is selected by the (8-gamma_shift) most significant of the low 8 bits of
+ * the color value then indexed by the upper 8 bits:
+ *
+ * table[low bits][high 8 bits]
+ *
+ * So the table 'n' corresponds to all those 'iv' of:
+ *
+ * <all high 8-bit values><n << gamma_shift>..<(n+1 << gamma_shift)-1>
+ *
+ */
+ if (sig_bit > 0 && sig_bit < 16U)
+ shift = (png_byte)(16U - sig_bit); /* shift == insignificant bits */
+
+ else
+ shift = 0; /* keep all 16 bits */
+
+ if (png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8))
+ {
+ /* PNG_MAX_GAMMA_8 is the number of bits to keep - effectively
+ * the significant bits in the *input* when the output will
+ * eventually be 8 bits. By default it is 11.
+ */
+ if (shift < (16U - PNG_MAX_GAMMA_8))
+ shift = (16U - PNG_MAX_GAMMA_8);
+ }
+
+ if (shift > 8U)
+ shift = 8U; /* Guarantees at least one table! */
+
+ png_ptr->gamma_shift = shift;
+
+#ifdef PNG_16BIT_SUPPORTED
+ /* NOTE: prior to 1.5.4 this test used to include PNG_BACKGROUND (now
+ * PNG_COMPOSE). This effectively smashed the background calculation for
+ * 16-bit output because the 8-bit table assumes the result will be reduced
+ * to 8 bits.
+ */
+ if (png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8))
+#endif
+ png_build_16to8_table(png_ptr, &png_ptr->gamma_16_table, shift,
+ png_ptr->screen_gamma > 0 ? png_product2(png_ptr->colorspace.gamma,
+ png_ptr->screen_gamma) : PNG_FP_1);
+
+#ifdef PNG_16BIT_SUPPORTED
+ else
+ png_build_16bit_table(png_ptr, &png_ptr->gamma_16_table, shift,
+ png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
+ png_ptr->screen_gamma) : PNG_FP_1);
+#endif
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ if (png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY))
+ {
+ png_build_16bit_table(png_ptr, &png_ptr->gamma_16_to_1, shift,
+ png_reciprocal(png_ptr->colorspace.gamma));
+
+ /* Notice that the '16 from 1' table should be full precision, however
+ * the lookup on this table still uses gamma_shift, so it can't be.
+ * TODO: fix this.
+ */
+ png_build_16bit_table(png_ptr, &png_ptr->gamma_16_from_1, shift,
+ png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
+ png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
+ }
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+ }
+}
+#endif /* READ_GAMMA */
+
+/* HARDWARE OPTION SUPPORT */
+#ifdef PNG_SET_OPTION_SUPPORTED
+int PNGAPI
+png_set_option(png_structrp png_ptr, int option, int onoff)
+{
+ if (png_ptr != NULL && option >= 0 && option < PNG_OPTION_NEXT &&
+ (option & 1) == 0)
+ {
+ int mask = 3 << option;
+ int setting = (2 + (onoff != 0)) << option;
+ int current = png_ptr->options;
+
+ png_ptr->options = (png_byte)((current & ~mask) | setting);
+
+ return (current & mask) >> option;
+ }
+
+ return PNG_OPTION_INVALID;
+}
+#endif
+
+/* sRGB support */
+#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
+ defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
+/* sRGB conversion tables; these are machine generated with the code in
+ * contrib/tools/makesRGB.c. The actual sRGB transfer curve defined in the
+ * specification (see the article at http://en.wikipedia.org/wiki/SRGB)
+ * is used, not the gamma=1/2.2 approximation use elsewhere in libpng.
+ * The sRGB to linear table is exact (to the nearest 16 bit linear fraction).
+ * The inverse (linear to sRGB) table has accuracies as follows:
+ *
+ * For all possible (255*65535+1) input values:
+ *
+ * error: -0.515566 - 0.625971, 79441 (0.475369%) of readings inexact
+ *
+ * For the input values corresponding to the 65536 16-bit values:
+ *
+ * error: -0.513727 - 0.607759, 308 (0.469978%) of readings inexact
+ *
+ * In all cases the inexact readings are off by one.
+ */
+
+#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
+/* The convert-to-sRGB table is only currently required for read. */
+const png_uint_16 png_sRGB_table[256] =
+{
+ 0,20,40,60,80,99,119,139,
+ 159,179,199,219,241,264,288,313,
+ 340,367,396,427,458,491,526,562,
+ 599,637,677,718,761,805,851,898,
+ 947,997,1048,1101,1156,1212,1270,1330,
+ 1391,1453,1517,1583,1651,1720,1790,1863,
+ 1937,2013,2090,2170,2250,2333,2418,2504,
+ 2592,2681,2773,2866,2961,3058,3157,3258,
+ 3360,3464,3570,3678,3788,3900,4014,4129,
+ 4247,4366,4488,4611,4736,4864,4993,5124,
+ 5257,5392,5530,5669,5810,5953,6099,6246,
+ 6395,6547,6700,6856,7014,7174,7335,7500,
+ 7666,7834,8004,8177,8352,8528,8708,8889,
+ 9072,9258,9445,9635,9828,10022,10219,10417,
+ 10619,10822,11028,11235,11446,11658,11873,12090,
+ 12309,12530,12754,12980,13209,13440,13673,13909,
+ 14146,14387,14629,14874,15122,15371,15623,15878,
+ 16135,16394,16656,16920,17187,17456,17727,18001,
+ 18277,18556,18837,19121,19407,19696,19987,20281,
+ 20577,20876,21177,21481,21787,22096,22407,22721,
+ 23038,23357,23678,24002,24329,24658,24990,25325,
+ 25662,26001,26344,26688,27036,27386,27739,28094,
+ 28452,28813,29176,29542,29911,30282,30656,31033,
+ 31412,31794,32179,32567,32957,33350,33745,34143,
+ 34544,34948,35355,35764,36176,36591,37008,37429,
+ 37852,38278,38706,39138,39572,40009,40449,40891,
+ 41337,41785,42236,42690,43147,43606,44069,44534,
+ 45002,45473,45947,46423,46903,47385,47871,48359,
+ 48850,49344,49841,50341,50844,51349,51858,52369,
+ 52884,53401,53921,54445,54971,55500,56032,56567,
+ 57105,57646,58190,58737,59287,59840,60396,60955,
+ 61517,62082,62650,63221,63795,64372,64952,65535
+};
+
+#endif /* simplified read only */
+
+/* The base/delta tables are required for both read and write (but currently
+ * only the simplified versions.)
+ */
+const png_uint_16 png_sRGB_base[512] =
+{
+ 128,1782,3383,4644,5675,6564,7357,8074,
+ 8732,9346,9921,10463,10977,11466,11935,12384,
+ 12816,13233,13634,14024,14402,14769,15125,15473,
+ 15812,16142,16466,16781,17090,17393,17690,17981,
+ 18266,18546,18822,19093,19359,19621,19879,20133,
+ 20383,20630,20873,21113,21349,21583,21813,22041,
+ 22265,22487,22707,22923,23138,23350,23559,23767,
+ 23972,24175,24376,24575,24772,24967,25160,25352,
+ 25542,25730,25916,26101,26284,26465,26645,26823,
+ 27000,27176,27350,27523,27695,27865,28034,28201,
+ 28368,28533,28697,28860,29021,29182,29341,29500,
+ 29657,29813,29969,30123,30276,30429,30580,30730,
+ 30880,31028,31176,31323,31469,31614,31758,31902,
+ 32045,32186,32327,32468,32607,32746,32884,33021,
+ 33158,33294,33429,33564,33697,33831,33963,34095,
+ 34226,34357,34486,34616,34744,34873,35000,35127,
+ 35253,35379,35504,35629,35753,35876,35999,36122,
+ 36244,36365,36486,36606,36726,36845,36964,37083,
+ 37201,37318,37435,37551,37668,37783,37898,38013,
+ 38127,38241,38354,38467,38580,38692,38803,38915,
+ 39026,39136,39246,39356,39465,39574,39682,39790,
+ 39898,40005,40112,40219,40325,40431,40537,40642,
+ 40747,40851,40955,41059,41163,41266,41369,41471,
+ 41573,41675,41777,41878,41979,42079,42179,42279,
+ 42379,42478,42577,42676,42775,42873,42971,43068,
+ 43165,43262,43359,43456,43552,43648,43743,43839,
+ 43934,44028,44123,44217,44311,44405,44499,44592,
+ 44685,44778,44870,44962,45054,45146,45238,45329,
+ 45420,45511,45601,45692,45782,45872,45961,46051,
+ 46140,46229,46318,46406,46494,46583,46670,46758,
+ 46846,46933,47020,47107,47193,47280,47366,47452,
+ 47538,47623,47709,47794,47879,47964,48048,48133,
+ 48217,48301,48385,48468,48552,48635,48718,48801,
+ 48884,48966,49048,49131,49213,49294,49376,49458,
+ 49539,49620,49701,49782,49862,49943,50023,50103,
+ 50183,50263,50342,50422,50501,50580,50659,50738,
+ 50816,50895,50973,51051,51129,51207,51285,51362,
+ 51439,51517,51594,51671,51747,51824,51900,51977,
+ 52053,52129,52205,52280,52356,52432,52507,52582,
+ 52657,52732,52807,52881,52956,53030,53104,53178,
+ 53252,53326,53400,53473,53546,53620,53693,53766,
+ 53839,53911,53984,54056,54129,54201,54273,54345,
+ 54417,54489,54560,54632,54703,54774,54845,54916,
+ 54987,55058,55129,55199,55269,55340,55410,55480,
+ 55550,55620,55689,55759,55828,55898,55967,56036,
+ 56105,56174,56243,56311,56380,56448,56517,56585,
+ 56653,56721,56789,56857,56924,56992,57059,57127,
+ 57194,57261,57328,57395,57462,57529,57595,57662,
+ 57728,57795,57861,57927,57993,58059,58125,58191,
+ 58256,58322,58387,58453,58518,58583,58648,58713,
+ 58778,58843,58908,58972,59037,59101,59165,59230,
+ 59294,59358,59422,59486,59549,59613,59677,59740,
+ 59804,59867,59930,59993,60056,60119,60182,60245,
+ 60308,60370,60433,60495,60558,60620,60682,60744,
+ 60806,60868,60930,60992,61054,61115,61177,61238,
+ 61300,61361,61422,61483,61544,61605,61666,61727,
+ 61788,61848,61909,61969,62030,62090,62150,62211,
+ 62271,62331,62391,62450,62510,62570,62630,62689,
+ 62749,62808,62867,62927,62986,63045,63104,63163,
+ 63222,63281,63340,63398,63457,63515,63574,63632,
+ 63691,63749,63807,63865,63923,63981,64039,64097,
+ 64155,64212,64270,64328,64385,64443,64500,64557,
+ 64614,64672,64729,64786,64843,64900,64956,65013,
+ 65070,65126,65183,65239,65296,65352,65409,65465
+};
+
+const png_byte png_sRGB_delta[512] =
+{
+ 207,201,158,129,113,100,90,82,77,72,68,64,61,59,56,54,
+ 52,50,49,47,46,45,43,42,41,40,39,39,38,37,36,36,
+ 35,34,34,33,33,32,32,31,31,30,30,30,29,29,28,28,
+ 28,27,27,27,27,26,26,26,25,25,25,25,24,24,24,24,
+ 23,23,23,23,23,22,22,22,22,22,22,21,21,21,21,21,
+ 21,20,20,20,20,20,20,20,20,19,19,19,19,19,19,19,
+ 19,18,18,18,18,18,18,18,18,18,18,17,17,17,17,17,
+ 17,17,17,17,17,17,16,16,16,16,16,16,16,16,16,16,
+ 16,16,16,16,15,15,15,15,15,15,15,15,15,15,15,15,
+ 15,15,15,15,14,14,14,14,14,14,14,14,14,14,14,14,
+ 14,14,14,14,14,14,14,13,13,13,13,13,13,13,13,13,
+ 13,13,13,13,13,13,13,13,13,13,13,13,13,13,12,12,
+ 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,
+ 12,12,12,12,12,12,12,12,12,12,12,12,11,11,11,11,
+ 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,
+ 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,
+ 11,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
+ 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
+ 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
+ 10,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+ 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+ 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+ 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+ 9,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+ 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+ 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+ 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+ 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+ 8,8,8,8,8,8,8,8,8,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
+};
+#endif /* SIMPLIFIED READ/WRITE sRGB support */
+
+/* SIMPLIFIED READ/WRITE SUPPORT */
+#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
+ defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
+static int
+png_image_free_function(png_voidp argument)
+{
+ png_imagep image = png_voidcast(png_imagep, argument);
+ png_controlp cp = image->opaque;
+ png_control c;
+
+ /* Double check that we have a png_ptr - it should be impossible to get here
+ * without one.
+ */
+ if (cp->png_ptr == NULL)
+ return 0;
+
+ /* First free any data held in the control structure. */
+# ifdef PNG_STDIO_SUPPORTED
+ if (cp->owned_file)
+ {
+ FILE *fp = png_voidcast(FILE*, cp->png_ptr->io_ptr);
+ cp->owned_file = 0;
+
+ /* Ignore errors here. */
+ if (fp != NULL)
+ {
+ cp->png_ptr->io_ptr = NULL;
+ (void)fclose(fp);
+ }
+ }
+# endif
+
+ /* Copy the control structure so that the original, allocated, version can be
+ * safely freed. Notice that a png_error here stops the remainder of the
+ * cleanup, but this is probably fine because that would indicate bad memory
+ * problems anyway.
+ */
+ c = *cp;
+ image->opaque = &c;
+ png_free(c.png_ptr, cp);
+
+ /* Then the structures, calling the correct API. */
+ if (c.for_write)
+ {
+# ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
+ png_destroy_write_struct(&c.png_ptr, &c.info_ptr);
+# else
+ png_error(c.png_ptr, "simplified write not supported");
+# endif
+ }
+ else
+ {
+# ifdef PNG_SIMPLIFIED_READ_SUPPORTED
+ png_destroy_read_struct(&c.png_ptr, &c.info_ptr, NULL);
+# else
+ png_error(c.png_ptr, "simplified read not supported");
+# endif
+ }
+
+ /* Success. */
+ return 1;
+}
+
+void PNGAPI
+png_image_free(png_imagep image)
+{
+ /* Safely call the real function, but only if doing so is safe at this point
+ * (if not inside an error handling context). Otherwise assume
+ * png_safe_execute will call this API after the return.
+ */
+ if (image != NULL && image->opaque != NULL &&
+ image->opaque->error_buf == NULL)
+ {
+ /* Ignore errors here: */
+ (void)png_safe_execute(image, png_image_free_function, image);
+ image->opaque = NULL;
+ }
+}
+
+int /* PRIVATE */
+png_image_error(png_imagep image, png_const_charp error_message)
+{
+ /* Utility to log an error. */
+ png_safecat(image->message, (sizeof image->message), 0, error_message);
+ image->warning_or_error |= PNG_IMAGE_ERROR;
+ png_image_free(image);
+ return 0;
+}
+
+#endif /* SIMPLIFIED READ/WRITE */
+#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngerror.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngerror.c
new file mode 100644
index 0000000..e53c932
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngerror.c
@@ -0,0 +1,933 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngerror.c - stub functions for i/o and memory allocation
+ *
+ * Last changed in libpng 1.6.1 [March 28, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all error handling. Users who
+ * need special error handling are expected to write replacement functions
+ * and use png_set_error_fn() to use those functions. See the instructions
+ * at each function.
+ */
+
+#include "pngpriv.h"
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
+static PNG_FUNCTION(void, png_default_error,PNGARG((png_const_structrp png_ptr,
+ png_const_charp error_message)),PNG_NORETURN);
+
+#ifdef PNG_WARNINGS_SUPPORTED
+static void /* PRIVATE */
+png_default_warning PNGARG((png_const_structrp png_ptr,
+ png_const_charp warning_message));
+#endif /* PNG_WARNINGS_SUPPORTED */
+
+/* This function is called whenever there is a fatal error. This function
+ * should not be changed. If there is a need to handle errors differently,
+ * you should supply a replacement error function and use png_set_error_fn()
+ * to replace the error function at run-time.
+ */
+#ifdef PNG_ERROR_TEXT_SUPPORTED
+PNG_FUNCTION(void,PNGAPI
+png_error,(png_const_structrp png_ptr, png_const_charp error_message),
+ PNG_NORETURN)
+{
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ char msg[16];
+ if (png_ptr != NULL)
+ {
+ if (png_ptr->flags&
+ (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+ {
+ if (*error_message == PNG_LITERAL_SHARP)
+ {
+ /* Strip "#nnnn " from beginning of error message. */
+ int offset;
+ for (offset = 1; offset<15; offset++)
+ if (error_message[offset] == ' ')
+ break;
+
+ if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+ {
+ int i;
+ for (i = 0; i < offset - 1; i++)
+ msg[i] = error_message[i + 1];
+ msg[i - 1] = '\0';
+ error_message = msg;
+ }
+
+ else
+ error_message += offset;
+ }
+
+ else
+ {
+ if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+ {
+ msg[0] = '0';
+ msg[1] = '\0';
+ error_message = msg;
+ }
+ }
+ }
+ }
+#endif
+ if (png_ptr != NULL && png_ptr->error_fn != NULL)
+ (*(png_ptr->error_fn))(png_constcast(png_structrp,png_ptr),
+ error_message);
+
+ /* If the custom handler doesn't exist, or if it returns,
+ use the default handler, which will not return. */
+ png_default_error(png_ptr, error_message);
+}
+#else
+PNG_FUNCTION(void,PNGAPI
+png_err,(png_const_structrp png_ptr),PNG_NORETURN)
+{
+ /* Prior to 1.5.2 the error_fn received a NULL pointer, expressed
+ * erroneously as '\0', instead of the empty string "". This was
+ * apparently an error, introduced in libpng-1.2.20, and png_default_error
+ * will crash in this case.
+ */
+ if (png_ptr != NULL && png_ptr->error_fn != NULL)
+ (*(png_ptr->error_fn))(png_constcast(png_structrp,png_ptr), "");
+
+ /* If the custom handler doesn't exist, or if it returns,
+ use the default handler, which will not return. */
+ png_default_error(png_ptr, "");
+}
+#endif /* PNG_ERROR_TEXT_SUPPORTED */
+
+/* Utility to safely appends strings to a buffer. This never errors out so
+ * error checking is not required in the caller.
+ */
+size_t
+png_safecat(png_charp buffer, size_t bufsize, size_t pos,
+ png_const_charp string)
+{
+ if (buffer != NULL && pos < bufsize)
+ {
+ if (string != NULL)
+ while (*string != '\0' && pos < bufsize-1)
+ buffer[pos++] = *string++;
+
+ buffer[pos] = '\0';
+ }
+
+ return pos;
+}
+
+#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_TIME_RFC1123_SUPPORTED)
+/* Utility to dump an unsigned value into a buffer, given a start pointer and
+ * and end pointer (which should point just *beyond* the end of the buffer!)
+ * Returns the pointer to the start of the formatted string.
+ */
+png_charp
+png_format_number(png_const_charp start, png_charp end, int format,
+ png_alloc_size_t number)
+{
+ int count = 0; /* number of digits output */
+ int mincount = 1; /* minimum number required */
+ int output = 0; /* digit output (for the fixed point format) */
+
+ *--end = '\0';
+
+ /* This is written so that the loop always runs at least once, even with
+ * number zero.
+ */
+ while (end > start && (number != 0 || count < mincount))
+ {
+
+ static const char digits[] = "0123456789ABCDEF";
+
+ switch (format)
+ {
+ case PNG_NUMBER_FORMAT_fixed:
+ /* Needs five digits (the fraction) */
+ mincount = 5;
+ if (output || number % 10 != 0)
+ {
+ *--end = digits[number % 10];
+ output = 1;
+ }
+ number /= 10;
+ break;
+
+ case PNG_NUMBER_FORMAT_02u:
+ /* Expects at least 2 digits. */
+ mincount = 2;
+ /* FALL THROUGH */
+
+ case PNG_NUMBER_FORMAT_u:
+ *--end = digits[number % 10];
+ number /= 10;
+ break;
+
+ case PNG_NUMBER_FORMAT_02x:
+ /* This format expects at least two digits */
+ mincount = 2;
+ /* FALL THROUGH */
+
+ case PNG_NUMBER_FORMAT_x:
+ *--end = digits[number & 0xf];
+ number >>= 4;
+ break;
+
+ default: /* an error */
+ number = 0;
+ break;
+ }
+
+ /* Keep track of the number of digits added */
+ ++count;
+
+ /* Float a fixed number here: */
+ if (format == PNG_NUMBER_FORMAT_fixed) if (count == 5) if (end > start)
+ {
+ /* End of the fraction, but maybe nothing was output? In that case
+ * drop the decimal point. If the number is a true zero handle that
+ * here.
+ */
+ if (output)
+ *--end = '.';
+ else if (number == 0) /* and !output */
+ *--end = '0';
+ }
+ }
+
+ return end;
+}
+#endif
+
+#ifdef PNG_WARNINGS_SUPPORTED
+/* This function is called whenever there is a non-fatal error. This function
+ * should not be changed. If there is a need to handle warnings differently,
+ * you should supply a replacement warning function and use
+ * png_set_error_fn() to replace the warning function at run-time.
+ */
+void PNGAPI
+png_warning(png_const_structrp png_ptr, png_const_charp warning_message)
+{
+ int offset = 0;
+ if (png_ptr != NULL)
+ {
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ if (png_ptr->flags&
+ (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+#endif
+ {
+ if (*warning_message == PNG_LITERAL_SHARP)
+ {
+ for (offset = 1; offset < 15; offset++)
+ if (warning_message[offset] == ' ')
+ break;
+ }
+ }
+ }
+ if (png_ptr != NULL && png_ptr->warning_fn != NULL)
+ (*(png_ptr->warning_fn))(png_constcast(png_structrp,png_ptr),
+ warning_message + offset);
+ else
+ png_default_warning(png_ptr, warning_message + offset);
+}
+
+/* These functions support 'formatted' warning messages with up to
+ * PNG_WARNING_PARAMETER_COUNT parameters. In the format string the parameter
+ * is introduced by @<number>, where 'number' starts at 1. This follows the
+ * standard established by X/Open for internationalizable error messages.
+ */
+void
+png_warning_parameter(png_warning_parameters p, int number,
+ png_const_charp string)
+{
+ if (number > 0 && number <= PNG_WARNING_PARAMETER_COUNT)
+ (void)png_safecat(p[number-1], (sizeof p[number-1]), 0, string);
+}
+
+void
+png_warning_parameter_unsigned(png_warning_parameters p, int number, int format,
+ png_alloc_size_t value)
+{
+ char buffer[PNG_NUMBER_BUFFER_SIZE];
+ png_warning_parameter(p, number, PNG_FORMAT_NUMBER(buffer, format, value));
+}
+
+void
+png_warning_parameter_signed(png_warning_parameters p, int number, int format,
+ png_int_32 value)
+{
+ png_alloc_size_t u;
+ png_charp str;
+ char buffer[PNG_NUMBER_BUFFER_SIZE];
+
+ /* Avoid overflow by doing the negate in a png_alloc_size_t: */
+ u = (png_alloc_size_t)value;
+ if (value < 0)
+ u = ~u + 1;
+
+ str = PNG_FORMAT_NUMBER(buffer, format, u);
+
+ if (value < 0 && str > buffer)
+ *--str = '-';
+
+ png_warning_parameter(p, number, str);
+}
+
+void
+png_formatted_warning(png_const_structrp png_ptr, png_warning_parameters p,
+ png_const_charp message)
+{
+ /* The internal buffer is just 192 bytes - enough for all our messages,
+ * overflow doesn't happen because this code checks! If someone figures
+ * out how to send us a message longer than 192 bytes, all that will
+ * happen is that the message will be truncated appropriately.
+ */
+ size_t i = 0; /* Index in the msg[] buffer: */
+ char msg[192];
+
+ /* Each iteration through the following loop writes at most one character
+ * to msg[i++] then returns here to validate that there is still space for
+ * the trailing '\0'. It may (in the case of a parameter) read more than
+ * one character from message[]; it must check for '\0' and continue to the
+ * test if it finds the end of string.
+ */
+ while (i<(sizeof msg)-1 && *message != '\0')
+ {
+ /* '@' at end of string is now just printed (previously it was skipped);
+ * it is an error in the calling code to terminate the string with @.
+ */
+ if (p != NULL && *message == '@' && message[1] != '\0')
+ {
+ int parameter_char = *++message; /* Consume the '@' */
+ static const char valid_parameters[] = "123456789";
+ int parameter = 0;
+
+ /* Search for the parameter digit, the index in the string is the
+ * parameter to use.
+ */
+ while (valid_parameters[parameter] != parameter_char &&
+ valid_parameters[parameter] != '\0')
+ ++parameter;
+
+ /* If the parameter digit is out of range it will just get printed. */
+ if (parameter < PNG_WARNING_PARAMETER_COUNT)
+ {
+ /* Append this parameter */
+ png_const_charp parm = p[parameter];
+ png_const_charp pend = p[parameter] + (sizeof p[parameter]);
+
+ /* No need to copy the trailing '\0' here, but there is no guarantee
+ * that parm[] has been initialized, so there is no guarantee of a
+ * trailing '\0':
+ */
+ while (i<(sizeof msg)-1 && *parm != '\0' && parm < pend)
+ msg[i++] = *parm++;
+
+ /* Consume the parameter digit too: */
+ ++message;
+ continue;
+ }
+
+ /* else not a parameter and there is a character after the @ sign; just
+ * copy that. This is known not to be '\0' because of the test above.
+ */
+ }
+
+ /* At this point *message can't be '\0', even in the bad parameter case
+ * above where there is a lone '@' at the end of the message string.
+ */
+ msg[i++] = *message++;
+ }
+
+ /* i is always less than (sizeof msg), so: */
+ msg[i] = '\0';
+
+ /* And this is the formatted message. It may be larger than
+ * PNG_MAX_ERROR_TEXT, but that is only used for 'chunk' errors and these
+ * are not (currently) formatted.
+ */
+ png_warning(png_ptr, msg);
+}
+#endif /* PNG_WARNINGS_SUPPORTED */
+
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+void PNGAPI
+png_benign_error(png_const_structrp png_ptr, png_const_charp error_message)
+{
+ if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
+ {
+# ifdef PNG_READ_SUPPORTED
+ if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
+ png_ptr->chunk_name != 0)
+ png_chunk_warning(png_ptr, error_message);
+ else
+# endif
+ png_warning(png_ptr, error_message);
+ }
+
+ else
+ {
+# ifdef PNG_READ_SUPPORTED
+ if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
+ png_ptr->chunk_name != 0)
+ png_chunk_error(png_ptr, error_message);
+ else
+# endif
+ png_error(png_ptr, error_message);
+ }
+}
+
+void /* PRIVATE */
+png_app_warning(png_const_structrp png_ptr, png_const_charp error_message)
+{
+ if (png_ptr->flags & PNG_FLAG_APP_WARNINGS_WARN)
+ png_warning(png_ptr, error_message);
+ else
+ png_error(png_ptr, error_message);
+}
+
+void /* PRIVATE */
+png_app_error(png_const_structrp png_ptr, png_const_charp error_message)
+{
+ if (png_ptr->flags & PNG_FLAG_APP_ERRORS_WARN)
+ png_warning(png_ptr, error_message);
+ else
+ png_error(png_ptr, error_message);
+}
+#endif /* BENIGN_ERRORS */
+
+/* These utilities are used internally to build an error message that relates
+ * to the current chunk. The chunk name comes from png_ptr->chunk_name,
+ * this is used to prefix the message. The message is limited in length
+ * to 63 bytes, the name characters are output as hex digits wrapped in []
+ * if the character is invalid.
+ */
+#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
+static PNG_CONST char png_digit[16] = {
+ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+ 'A', 'B', 'C', 'D', 'E', 'F'
+};
+
+#define PNG_MAX_ERROR_TEXT 196 /* Currently limited be profile_error in png.c */
+#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
+static void /* PRIVATE */
+png_format_buffer(png_const_structrp png_ptr, png_charp buffer, png_const_charp
+ error_message)
+{
+ png_uint_32 chunk_name = png_ptr->chunk_name;
+ int iout = 0, ishift = 24;
+
+ while (ishift >= 0)
+ {
+ int c = (int)(chunk_name >> ishift) & 0xff;
+
+ ishift -= 8;
+ if (isnonalpha(c))
+ {
+ buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
+ buffer[iout++] = png_digit[(c & 0xf0) >> 4];
+ buffer[iout++] = png_digit[c & 0x0f];
+ buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
+ }
+
+ else
+ {
+ buffer[iout++] = (char)c;
+ }
+ }
+
+ if (error_message == NULL)
+ buffer[iout] = '\0';
+
+ else
+ {
+ int iin = 0;
+
+ buffer[iout++] = ':';
+ buffer[iout++] = ' ';
+
+ while (iin < PNG_MAX_ERROR_TEXT-1 && error_message[iin] != '\0')
+ buffer[iout++] = error_message[iin++];
+
+ /* iin < PNG_MAX_ERROR_TEXT, so the following is safe: */
+ buffer[iout] = '\0';
+ }
+}
+#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
+
+#if defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
+PNG_FUNCTION(void,PNGAPI
+png_chunk_error,(png_const_structrp png_ptr, png_const_charp error_message),
+ PNG_NORETURN)
+{
+ char msg[18+PNG_MAX_ERROR_TEXT];
+ if (png_ptr == NULL)
+ png_error(png_ptr, error_message);
+
+ else
+ {
+ png_format_buffer(png_ptr, msg, error_message);
+ png_error(png_ptr, msg);
+ }
+}
+#endif /* PNG_READ_SUPPORTED && PNG_ERROR_TEXT_SUPPORTED */
+
+#ifdef PNG_WARNINGS_SUPPORTED
+void PNGAPI
+png_chunk_warning(png_const_structrp png_ptr, png_const_charp warning_message)
+{
+ char msg[18+PNG_MAX_ERROR_TEXT];
+ if (png_ptr == NULL)
+ png_warning(png_ptr, warning_message);
+
+ else
+ {
+ png_format_buffer(png_ptr, msg, warning_message);
+ png_warning(png_ptr, msg);
+ }
+}
+#endif /* PNG_WARNINGS_SUPPORTED */
+
+#ifdef PNG_READ_SUPPORTED
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+void PNGAPI
+png_chunk_benign_error(png_const_structrp png_ptr, png_const_charp
+ error_message)
+{
+ if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
+ png_chunk_warning(png_ptr, error_message);
+
+ else
+ png_chunk_error(png_ptr, error_message);
+}
+#endif
+#endif /* PNG_READ_SUPPORTED */
+
+void /* PRIVATE */
+png_chunk_report(png_const_structrp png_ptr, png_const_charp message, int error)
+{
+ /* This is always supported, but for just read or just write it
+ * unconditionally does the right thing.
+ */
+# if defined(PNG_READ_SUPPORTED) && defined(PNG_WRITE_SUPPORTED)
+ if (png_ptr->mode & PNG_IS_READ_STRUCT)
+# endif
+
+# ifdef PNG_READ_SUPPORTED
+ {
+ if (error < PNG_CHUNK_ERROR)
+ png_chunk_warning(png_ptr, message);
+
+ else
+ png_chunk_benign_error(png_ptr, message);
+ }
+# endif
+
+# if defined(PNG_READ_SUPPORTED) && defined(PNG_WRITE_SUPPORTED)
+ else if (!(png_ptr->mode & PNG_IS_READ_STRUCT))
+# endif
+
+# ifdef PNG_WRITE_SUPPORTED
+ {
+ if (error < PNG_CHUNK_WRITE_ERROR)
+ png_app_warning(png_ptr, message);
+
+ else
+ png_app_error(png_ptr, message);
+ }
+# endif
+}
+
+#ifdef PNG_ERROR_TEXT_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+PNG_FUNCTION(void,
+png_fixed_error,(png_const_structrp png_ptr, png_const_charp name),PNG_NORETURN)
+{
+# define fixed_message "fixed point overflow in "
+# define fixed_message_ln ((sizeof fixed_message)-1)
+ int iin;
+ char msg[fixed_message_ln+PNG_MAX_ERROR_TEXT];
+ memcpy(msg, fixed_message, fixed_message_ln);
+ iin = 0;
+ if (name != NULL) while (iin < (PNG_MAX_ERROR_TEXT-1) && name[iin] != 0)
+ {
+ msg[fixed_message_ln + iin] = name[iin];
+ ++iin;
+ }
+ msg[fixed_message_ln + iin] = 0;
+ png_error(png_ptr, msg);
+}
+#endif
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+/* This API only exists if ANSI-C style error handling is used,
+ * otherwise it is necessary for png_default_error to be overridden.
+ */
+jmp_buf* PNGAPI
+png_set_longjmp_fn(png_structrp png_ptr, png_longjmp_ptr longjmp_fn,
+ size_t jmp_buf_size)
+{
+ /* From libpng 1.6.0 the app gets one chance to set a 'jmpbuf_size' value
+ * and it must not change after that. Libpng doesn't care how big the
+ * buffer is, just that it doesn't change.
+ *
+ * If the buffer size is no *larger* than the size of jmp_buf when libpng is
+ * compiled a built in jmp_buf is returned; this preserves the pre-1.6.0
+ * semantics that this call will not fail. If the size is larger, however,
+ * the buffer is allocated and this may fail, causing the function to return
+ * NULL.
+ */
+ if (png_ptr == NULL)
+ return NULL;
+
+ if (png_ptr->jmp_buf_ptr == NULL)
+ {
+ png_ptr->jmp_buf_size = 0; /* not allocated */
+
+ if (jmp_buf_size <= (sizeof png_ptr->jmp_buf_local))
+ png_ptr->jmp_buf_ptr = &png_ptr->jmp_buf_local;
+
+ else
+ {
+ png_ptr->jmp_buf_ptr = png_voidcast(jmp_buf *,
+ png_malloc_warn(png_ptr, jmp_buf_size));
+
+ if (png_ptr->jmp_buf_ptr == NULL)
+ return NULL; /* new NULL return on OOM */
+
+ png_ptr->jmp_buf_size = jmp_buf_size;
+ }
+ }
+
+ else /* Already allocated: check the size */
+ {
+ size_t size = png_ptr->jmp_buf_size;
+
+ if (size == 0)
+ {
+ size = (sizeof png_ptr->jmp_buf_local);
+ if (png_ptr->jmp_buf_ptr != &png_ptr->jmp_buf_local)
+ {
+ /* This is an internal error in libpng: somehow we have been left
+ * with a stack allocated jmp_buf when the application regained
+ * control. It's always possible to fix this up, but for the moment
+ * this is a png_error because that makes it easy to detect.
+ */
+ png_error(png_ptr, "Libpng jmp_buf still allocated");
+ /* png_ptr->jmp_buf_ptr = &png_ptr->jmp_buf_local; */
+ }
+ }
+
+ if (size != jmp_buf_size)
+ {
+ png_warning(png_ptr, "Application jmp_buf size changed");
+ return NULL; /* caller will probably crash: no choice here */
+ }
+ }
+
+ /* Finally fill in the function, now we have a satisfactory buffer. It is
+ * valid to change the function on every call.
+ */
+ png_ptr->longjmp_fn = longjmp_fn;
+ return png_ptr->jmp_buf_ptr;
+}
+
+void /* PRIVATE */
+png_free_jmpbuf(png_structrp png_ptr)
+{
+ if (png_ptr != NULL)
+ {
+ jmp_buf *jb = png_ptr->jmp_buf_ptr;
+
+ /* A size of 0 is used to indicate a local, stack, allocation of the
+ * pointer; used here and in png.c
+ */
+ if (jb != NULL && png_ptr->jmp_buf_size > 0)
+ {
+
+ /* This stuff is so that a failure to free the error control structure
+ * does not leave libpng in a state with no valid error handling: the
+ * free always succeeds, if there is an error it gets ignored.
+ */
+ if (jb != &png_ptr->jmp_buf_local)
+ {
+ /* Make an internal, libpng, jmp_buf to return here */
+ jmp_buf free_jmp_buf;
+
+ if (!setjmp(free_jmp_buf))
+ {
+ png_ptr->jmp_buf_ptr = &free_jmp_buf; /* come back here */
+ png_ptr->jmp_buf_size = 0; /* stack allocation */
+ png_ptr->longjmp_fn = longjmp;
+ png_free(png_ptr, jb); /* Return to setjmp on error */
+ }
+ }
+ }
+
+ /* *Always* cancel everything out: */
+ png_ptr->jmp_buf_size = 0;
+ png_ptr->jmp_buf_ptr = NULL;
+ png_ptr->longjmp_fn = 0;
+ }
+}
+#endif
+
+/* This is the default error handling function. Note that replacements for
+ * this function MUST NOT RETURN, or the program will likely crash. This
+ * function is used by default, or if the program supplies NULL for the
+ * error function pointer in png_set_error_fn().
+ */
+static PNG_FUNCTION(void /* PRIVATE */,
+png_default_error,(png_const_structrp png_ptr, png_const_charp error_message),
+ PNG_NORETURN)
+{
+#ifdef PNG_CONSOLE_IO_SUPPORTED
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ /* Check on NULL only added in 1.5.4 */
+ if (error_message != NULL && *error_message == PNG_LITERAL_SHARP)
+ {
+ /* Strip "#nnnn " from beginning of error message. */
+ int offset;
+ char error_number[16];
+ for (offset = 0; offset<15; offset++)
+ {
+ error_number[offset] = error_message[offset + 1];
+ if (error_message[offset] == ' ')
+ break;
+ }
+
+ if ((offset > 1) && (offset < 15))
+ {
+ error_number[offset - 1] = '\0';
+ fprintf(stderr, "libpng error no. %s: %s",
+ error_number, error_message + offset + 1);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+
+ else
+ {
+ fprintf(stderr, "libpng error: %s, offset=%d",
+ error_message, offset);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+ }
+ else
+#endif
+ {
+ fprintf(stderr, "libpng error: %s", error_message ? error_message :
+ "undefined");
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+#else
+ PNG_UNUSED(error_message) /* Make compiler happy */
+#endif
+ png_longjmp(png_ptr, 1);
+}
+
+PNG_FUNCTION(void,PNGAPI
+png_longjmp,(png_const_structrp png_ptr, int val),PNG_NORETURN)
+{
+#ifdef PNG_SETJMP_SUPPORTED
+ if (png_ptr && png_ptr->longjmp_fn && png_ptr->jmp_buf_ptr)
+ png_ptr->longjmp_fn(*png_ptr->jmp_buf_ptr, val);
+#endif
+
+ /* Here if not setjmp support or if png_ptr is null. */
+ PNG_ABORT();
+}
+
+#ifdef PNG_WARNINGS_SUPPORTED
+/* This function is called when there is a warning, but the library thinks
+ * it can continue anyway. Replacement functions don't have to do anything
+ * here if you don't want them to. In the default configuration, png_ptr is
+ * not used, but it is passed in case it may be useful.
+ */
+static void /* PRIVATE */
+png_default_warning(png_const_structrp png_ptr, png_const_charp warning_message)
+{
+#ifdef PNG_CONSOLE_IO_SUPPORTED
+# ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ if (*warning_message == PNG_LITERAL_SHARP)
+ {
+ int offset;
+ char warning_number[16];
+ for (offset = 0; offset < 15; offset++)
+ {
+ warning_number[offset] = warning_message[offset + 1];
+ if (warning_message[offset] == ' ')
+ break;
+ }
+
+ if ((offset > 1) && (offset < 15))
+ {
+ warning_number[offset + 1] = '\0';
+ fprintf(stderr, "libpng warning no. %s: %s",
+ warning_number, warning_message + offset);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+
+ else
+ {
+ fprintf(stderr, "libpng warning: %s",
+ warning_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+ }
+ else
+# endif
+
+ {
+ fprintf(stderr, "libpng warning: %s", warning_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+#else
+ PNG_UNUSED(warning_message) /* Make compiler happy */
+#endif
+ PNG_UNUSED(png_ptr) /* Make compiler happy */
+}
+#endif /* PNG_WARNINGS_SUPPORTED */
+
+/* This function is called when the application wants to use another method
+ * of handling errors and warnings. Note that the error function MUST NOT
+ * return to the calling routine or serious problems will occur. The return
+ * method used in the default routine calls longjmp(png_ptr->jmp_buf_ptr, 1)
+ */
+void PNGAPI
+png_set_error_fn(png_structrp png_ptr, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warning_fn)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->error_ptr = error_ptr;
+ png_ptr->error_fn = error_fn;
+#ifdef PNG_WARNINGS_SUPPORTED
+ png_ptr->warning_fn = warning_fn;
+#else
+ PNG_UNUSED(warning_fn)
+#endif
+}
+
+
+/* This function returns a pointer to the error_ptr associated with the user
+ * functions. The application should free any memory associated with this
+ * pointer before png_write_destroy and png_read_destroy are called.
+ */
+png_voidp PNGAPI
+png_get_error_ptr(png_const_structrp png_ptr)
+{
+ if (png_ptr == NULL)
+ return NULL;
+
+ return ((png_voidp)png_ptr->error_ptr);
+}
+
+
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+void PNGAPI
+png_set_strip_error_numbers(png_structrp png_ptr, png_uint_32 strip_mode)
+{
+ if (png_ptr != NULL)
+ {
+ png_ptr->flags &=
+ ((~(PNG_FLAG_STRIP_ERROR_NUMBERS |
+ PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
+ }
+}
+#endif
+
+#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
+ defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
+ /* Currently the above both depend on SETJMP_SUPPORTED, however it would be
+ * possible to implement without setjmp support just so long as there is some
+ * way to handle the error return here:
+ */
+PNG_FUNCTION(void /* PRIVATE */,
+png_safe_error,(png_structp png_nonconst_ptr, png_const_charp error_message),
+ PNG_NORETURN)
+{
+ const png_const_structrp png_ptr = png_nonconst_ptr;
+ png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
+
+ /* An error is always logged here, overwriting anything (typically a warning)
+ * that is already there:
+ */
+ if (image != NULL)
+ {
+ png_safecat(image->message, (sizeof image->message), 0, error_message);
+ image->warning_or_error |= PNG_IMAGE_ERROR;
+
+ /* Retrieve the jmp_buf from within the png_control, making this work for
+ * C++ compilation too is pretty tricky: C++ wants a pointer to the first
+ * element of a jmp_buf, but C doesn't tell us the type of that.
+ */
+ if (image->opaque != NULL && image->opaque->error_buf != NULL)
+ longjmp(png_control_jmp_buf(image->opaque), 1);
+
+ /* Missing longjmp buffer, the following is to help debugging: */
+ {
+ size_t pos = png_safecat(image->message, (sizeof image->message), 0,
+ "bad longjmp: ");
+ png_safecat(image->message, (sizeof image->message), pos,
+ error_message);
+ }
+ }
+
+ /* Here on an internal programming error. */
+ abort();
+}
+
+#ifdef PNG_WARNINGS_SUPPORTED
+void /* PRIVATE */
+png_safe_warning(png_structp png_nonconst_ptr, png_const_charp warning_message)
+{
+ const png_const_structrp png_ptr = png_nonconst_ptr;
+ png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
+
+ /* A warning is only logged if there is no prior warning or error. */
+ if (image->warning_or_error == 0)
+ {
+ png_safecat(image->message, (sizeof image->message), 0, warning_message);
+ image->warning_or_error |= PNG_IMAGE_WARNING;
+ }
+}
+#endif
+
+int /* PRIVATE */
+png_safe_execute(png_imagep image_in, int (*function)(png_voidp), png_voidp arg)
+{
+ volatile png_imagep image = image_in;
+ volatile int result;
+ volatile png_voidp saved_error_buf;
+ jmp_buf safe_jmpbuf;
+
+ /* Safely execute function(arg) with png_error returning to this function. */
+ saved_error_buf = image->opaque->error_buf;
+ result = setjmp(safe_jmpbuf) == 0;
+
+ if (result)
+ {
+
+ image->opaque->error_buf = safe_jmpbuf;
+ result = function(arg);
+ }
+
+ image->opaque->error_buf = saved_error_buf;
+
+ /* And do the cleanup prior to any failure return. */
+ if (!result)
+ png_image_free(image);
+
+ return result;
+}
+#endif /* SIMPLIFIED READ/WRITE */
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngget.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngget.c
new file mode 100644
index 0000000..56ba970
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngget.c
@@ -0,0 +1,1178 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngget.c - retrieval of values from info struct
+ *
+ * Last changed in libpng 1.6.1 [March 28, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ */
+
+#include "pngpriv.h"
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
+png_uint_32 PNGAPI
+png_get_valid(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_uint_32 flag)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->valid & flag);
+
+ return(0);
+}
+
+png_size_t PNGAPI
+png_get_rowbytes(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->rowbytes);
+
+ return(0);
+}
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+png_bytepp PNGAPI
+png_get_rows(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->row_pointers);
+
+ return(0);
+}
+#endif
+
+#ifdef PNG_EASY_ACCESS_SUPPORTED
+/* Easy access to info, added in libpng-0.99 */
+png_uint_32 PNGAPI
+png_get_image_width(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->width;
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_image_height(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->height;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_bit_depth(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->bit_depth;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_color_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->color_type;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_filter_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->filter_type;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_interlace_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->interlace_type;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_compression_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->compression_type;
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_x_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
+ info_ptr)
+{
+#ifdef PNG_pHYs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_debug1(1, "in %s retrieval function",
+ "png_get_x_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
+ return (info_ptr->x_pixels_per_unit);
+ }
+#endif
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_y_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
+ info_ptr)
+{
+#ifdef PNG_pHYs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_debug1(1, "in %s retrieval function",
+ "png_get_y_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
+ return (info_ptr->y_pixels_per_unit);
+ }
+#endif
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+#ifdef PNG_pHYs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER &&
+ info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit)
+ return (info_ptr->x_pixels_per_unit);
+ }
+#endif
+
+ return (0);
+}
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+float PNGAPI
+png_get_pixel_aspect_ratio(png_const_structrp png_ptr, png_const_inforp
+ info_ptr)
+{
+#ifdef PNG_READ_pHYs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
+
+ if (info_ptr->x_pixels_per_unit != 0)
+ return ((float)((float)info_ptr->y_pixels_per_unit
+ /(float)info_ptr->x_pixels_per_unit));
+ }
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
+#endif
+
+ return ((float)0.0);
+}
+#endif
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+png_fixed_point PNGAPI
+png_get_pixel_aspect_ratio_fixed(png_const_structrp png_ptr,
+ png_const_inforp info_ptr)
+{
+#ifdef PNG_READ_pHYs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)
+ && info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0
+ && info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX
+ && info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX)
+ {
+ png_fixed_point res;
+
+ png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed");
+
+ /* The following casts work because a PNG 4 byte integer only has a valid
+ * range of 0..2^31-1; otherwise the cast might overflow.
+ */
+ if (png_muldiv(&res, (png_int_32)info_ptr->y_pixels_per_unit, PNG_FP_1,
+ (png_int_32)info_ptr->x_pixels_per_unit))
+ return res;
+ }
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
+#endif
+
+ return 0;
+}
+#endif
+
+png_int_32 PNGAPI
+png_get_x_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+#ifdef PNG_oFFs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
+
+ if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
+ return (info_ptr->x_offset);
+ }
+#endif
+
+ return (0);
+}
+
+png_int_32 PNGAPI
+png_get_y_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+#ifdef PNG_oFFs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
+
+ if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
+ return (info_ptr->y_offset);
+ }
+#endif
+
+ return (0);
+}
+
+png_int_32 PNGAPI
+png_get_x_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+#ifdef PNG_oFFs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels");
+
+ if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
+ return (info_ptr->x_offset);
+ }
+#endif
+
+ return (0);
+}
+
+png_int_32 PNGAPI
+png_get_y_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+#ifdef PNG_oFFs_SUPPORTED
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels");
+
+ if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
+ return (info_ptr->y_offset);
+ }
+#endif
+
+ return (0);
+}
+
+#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
+static png_uint_32
+ppi_from_ppm(png_uint_32 ppm)
+{
+#if 0
+ /* The conversion is *(2.54/100), in binary (32 digits):
+ * .00000110100000001001110101001001
+ */
+ png_uint_32 t1001, t1101;
+ ppm >>= 1; /* .1 */
+ t1001 = ppm + (ppm >> 3); /* .1001 */
+ t1101 = t1001 + (ppm >> 1); /* .1101 */
+ ppm >>= 20; /* .000000000000000000001 */
+ t1101 += t1101 >> 15; /* .1101000000000001101 */
+ t1001 >>= 11; /* .000000000001001 */
+ t1001 += t1001 >> 12; /* .000000000001001000000001001 */
+ ppm += t1001; /* .000000000001001000001001001 */
+ ppm += t1101; /* .110100000001001110101001001 */
+ return (ppm + 16) >> 5;/* .00000110100000001001110101001001 */
+#else
+ /* The argument is a PNG unsigned integer, so it is not permitted
+ * to be bigger than 2^31.
+ */
+ png_fixed_point result;
+ if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127,
+ 5000))
+ return result;
+
+ /* Overflow. */
+ return 0;
+#endif
+}
+
+png_uint_32 PNGAPI
+png_get_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ return ppi_from_ppm(png_get_pixels_per_meter(png_ptr, info_ptr));
+}
+
+png_uint_32 PNGAPI
+png_get_x_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ return ppi_from_ppm(png_get_x_pixels_per_meter(png_ptr, info_ptr));
+}
+
+png_uint_32 PNGAPI
+png_get_y_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ return ppi_from_ppm(png_get_y_pixels_per_meter(png_ptr, info_ptr));
+}
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+static png_fixed_point
+png_fixed_inches_from_microns(png_const_structrp png_ptr, png_int_32 microns)
+{
+ /* Convert from metres * 1,000,000 to inches * 100,000, meters to
+ * inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
+ * Notice that this can overflow - a warning is output and 0 is
+ * returned.
+ */
+ return png_muldiv_warn(png_ptr, microns, 500, 127);
+}
+
+png_fixed_point PNGAPI
+png_get_x_offset_inches_fixed(png_const_structrp png_ptr,
+ png_const_inforp info_ptr)
+{
+ return png_fixed_inches_from_microns(png_ptr,
+ png_get_x_offset_microns(png_ptr, info_ptr));
+}
+#endif
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+png_fixed_point PNGAPI
+png_get_y_offset_inches_fixed(png_const_structrp png_ptr,
+ png_const_inforp info_ptr)
+{
+ return png_fixed_inches_from_microns(png_ptr,
+ png_get_y_offset_microns(png_ptr, info_ptr));
+}
+#endif
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+float PNGAPI
+png_get_x_offset_inches(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ /* To avoid the overflow do the conversion directly in floating
+ * point.
+ */
+ return (float)(png_get_x_offset_microns(png_ptr, info_ptr) * .00003937);
+}
+#endif
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+float PNGAPI
+png_get_y_offset_inches(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ /* To avoid the overflow do the conversion directly in floating
+ * point.
+ */
+ return (float)(png_get_y_offset_microns(png_ptr, info_ptr) * .00003937);
+}
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+png_uint_32 PNGAPI
+png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
+{
+ png_uint_32 retval = 0;
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_debug1(1, "in %s retrieval function", "pHYs");
+
+ if (res_x != NULL)
+ {
+ *res_x = info_ptr->x_pixels_per_unit;
+ retval |= PNG_INFO_pHYs;
+ }
+
+ if (res_y != NULL)
+ {
+ *res_y = info_ptr->y_pixels_per_unit;
+ retval |= PNG_INFO_pHYs;
+ }
+
+ if (unit_type != NULL)
+ {
+ *unit_type = (int)info_ptr->phys_unit_type;
+ retval |= PNG_INFO_pHYs;
+
+ if (*unit_type == 1)
+ {
+ if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
+ if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50);
+ }
+ }
+ }
+
+ return (retval);
+}
+#endif /* PNG_pHYs_SUPPORTED */
+#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
+
+/* png_get_channels really belongs in here, too, but it's been around longer */
+
+#endif /* PNG_EASY_ACCESS_SUPPORTED */
+
+
+png_byte PNGAPI
+png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->channels);
+
+ return (0);
+}
+
+#ifdef PNG_READ_SUPPORTED
+png_const_bytep PNGAPI
+png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->signature);
+
+ return (NULL);
+}
+#endif
+
+#ifdef PNG_bKGD_SUPPORTED
+png_uint_32 PNGAPI
+png_get_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_color_16p *background)
+{
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
+ && background != NULL)
+ {
+ png_debug1(1, "in %s retrieval function", "bKGD");
+
+ *background = &(info_ptr->background);
+ return (PNG_INFO_bKGD);
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+/* The XYZ APIs were added in 1.5.5 to take advantage of the code added at the
+ * same time to correct the rgb grayscale coefficient defaults obtained from the
+ * cHRM chunk in 1.5.4
+ */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ double *white_x, double *white_y, double *red_x, double *red_y,
+ double *green_x, double *green_y, double *blue_x, double *blue_y)
+{
+ /* Quiet API change: this code used to only return the end points if a cHRM
+ * chunk was present, but the end points can also come from iCCP or sRGB
+ * chunks, so in 1.6.0 the png_get_ APIs return the end points regardless and
+ * the png_set_ APIs merely check that set end points are mutually
+ * consistent.
+ */
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ {
+ png_debug1(1, "in %s retrieval function", "cHRM");
+
+ if (white_x != NULL)
+ *white_x = png_float(png_ptr,
+ info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
+ if (white_y != NULL)
+ *white_y = png_float(png_ptr,
+ info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
+ if (red_x != NULL)
+ *red_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redx,
+ "cHRM red X");
+ if (red_y != NULL)
+ *red_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redy,
+ "cHRM red Y");
+ if (green_x != NULL)
+ *green_x = png_float(png_ptr,
+ info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
+ if (green_y != NULL)
+ *green_y = png_float(png_ptr,
+ info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
+ if (blue_x != NULL)
+ *blue_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluex,
+ "cHRM blue X");
+ if (blue_y != NULL)
+ *blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
+ "cHRM blue Y");
+ return (PNG_INFO_cHRM);
+ }
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ double *red_X, double *red_Y, double *red_Z, double *green_X,
+ double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
+ double *blue_Z)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ {
+ png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
+
+ if (red_X != NULL)
+ *red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X,
+ "cHRM red X");
+ if (red_Y != NULL)
+ *red_Y = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Y,
+ "cHRM red Y");
+ if (red_Z != NULL)
+ *red_Z = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Z,
+ "cHRM red Z");
+ if (green_X != NULL)
+ *green_X = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
+ if (green_Y != NULL)
+ *green_Y = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
+ if (green_Z != NULL)
+ *green_Z = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
+ if (blue_X != NULL)
+ *blue_X = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
+ if (blue_Y != NULL)
+ *blue_Y = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
+ if (blue_Z != NULL)
+ *blue_Z = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
+ return (PNG_INFO_cHRM);
+ }
+
+ return (0);
+}
+# endif
+
+# ifdef PNG_FIXED_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
+ png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
+ png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
+ png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
+ png_fixed_point *int_blue_Z)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ {
+ png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
+
+ if (int_red_X != NULL)
+ *int_red_X = info_ptr->colorspace.end_points_XYZ.red_X;
+ if (int_red_Y != NULL)
+ *int_red_Y = info_ptr->colorspace.end_points_XYZ.red_Y;
+ if (int_red_Z != NULL)
+ *int_red_Z = info_ptr->colorspace.end_points_XYZ.red_Z;
+ if (int_green_X != NULL)
+ *int_green_X = info_ptr->colorspace.end_points_XYZ.green_X;
+ if (int_green_Y != NULL)
+ *int_green_Y = info_ptr->colorspace.end_points_XYZ.green_Y;
+ if (int_green_Z != NULL)
+ *int_green_Z = info_ptr->colorspace.end_points_XYZ.green_Z;
+ if (int_blue_X != NULL)
+ *int_blue_X = info_ptr->colorspace.end_points_XYZ.blue_X;
+ if (int_blue_Y != NULL)
+ *int_blue_Y = info_ptr->colorspace.end_points_XYZ.blue_Y;
+ if (int_blue_Z != NULL)
+ *int_blue_Z = info_ptr->colorspace.end_points_XYZ.blue_Z;
+ return (PNG_INFO_cHRM);
+ }
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_cHRM_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
+ png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
+ png_fixed_point *blue_x, png_fixed_point *blue_y)
+{
+ png_debug1(1, "in %s retrieval function", "cHRM");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ {
+ if (white_x != NULL)
+ *white_x = info_ptr->colorspace.end_points_xy.whitex;
+ if (white_y != NULL)
+ *white_y = info_ptr->colorspace.end_points_xy.whitey;
+ if (red_x != NULL)
+ *red_x = info_ptr->colorspace.end_points_xy.redx;
+ if (red_y != NULL)
+ *red_y = info_ptr->colorspace.end_points_xy.redy;
+ if (green_x != NULL)
+ *green_x = info_ptr->colorspace.end_points_xy.greenx;
+ if (green_y != NULL)
+ *green_y = info_ptr->colorspace.end_points_xy.greeny;
+ if (blue_x != NULL)
+ *blue_x = info_ptr->colorspace.end_points_xy.bluex;
+ if (blue_y != NULL)
+ *blue_y = info_ptr->colorspace.end_points_xy.bluey;
+ return (PNG_INFO_cHRM);
+ }
+
+ return (0);
+}
+# endif
+#endif
+
+#ifdef PNG_gAMA_SUPPORTED
+# ifdef PNG_FIXED_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_gAMA_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_fixed_point *file_gamma)
+{
+ png_debug1(1, "in %s retrieval function", "gAMA");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) &&
+ file_gamma != NULL)
+ {
+ *file_gamma = info_ptr->colorspace.gamma;
+ return (PNG_INFO_gAMA);
+ }
+
+ return (0);
+}
+# endif
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_gAMA(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ double *file_gamma)
+{
+ png_debug1(1, "in %s retrieval function", "gAMA(float)");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) &&
+ file_gamma != NULL)
+ {
+ *file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma,
+ "png_get_gAMA");
+ return (PNG_INFO_gAMA);
+ }
+
+ return (0);
+}
+# endif
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sRGB(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ int *file_srgb_intent)
+{
+ png_debug1(1, "in %s retrieval function", "sRGB");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
+ && file_srgb_intent != NULL)
+ {
+ *file_srgb_intent = info_ptr->colorspace.rendering_intent;
+ return (PNG_INFO_sRGB);
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+png_uint_32 PNGAPI
+png_get_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_charpp name, int *compression_type,
+ png_bytepp profile, png_uint_32 *proflen)
+{
+ png_debug1(1, "in %s retrieval function", "iCCP");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
+ && name != NULL && compression_type != NULL && profile != NULL &&
+ proflen != NULL)
+ {
+ *name = info_ptr->iccp_name;
+ *profile = info_ptr->iccp_profile;
+ *proflen = png_get_uint_32(info_ptr->iccp_profile);
+ /* This is somewhat irrelevant since the profile data returned has
+ * actually been uncompressed.
+ */
+ *compression_type = PNG_COMPRESSION_TYPE_BASE;
+ return (PNG_INFO_iCCP);
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+int PNGAPI
+png_get_sPLT(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_sPLT_tpp spalettes)
+{
+ if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
+ {
+ *spalettes = info_ptr->splt_palettes;
+ return info_ptr->splt_palettes_num;
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+png_uint_32 PNGAPI
+png_get_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_uint_16p *hist)
+{
+ png_debug1(1, "in %s retrieval function", "hIST");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
+ && hist != NULL)
+ {
+ *hist = info_ptr->hist;
+ return (PNG_INFO_hIST);
+ }
+
+ return (0);
+}
+#endif
+
+png_uint_32 PNGAPI
+png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_uint_32 *width, png_uint_32 *height, int *bit_depth,
+ int *color_type, int *interlace_type, int *compression_type,
+ int *filter_type)
+{
+ png_debug1(1, "in %s retrieval function", "IHDR");
+
+ if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
+ height == NULL || bit_depth == NULL || color_type == NULL)
+ return (0);
+
+ *width = info_ptr->width;
+ *height = info_ptr->height;
+ *bit_depth = info_ptr->bit_depth;
+ *color_type = info_ptr->color_type;
+
+ if (compression_type != NULL)
+ *compression_type = info_ptr->compression_type;
+
+ if (filter_type != NULL)
+ *filter_type = info_ptr->filter_type;
+
+ if (interlace_type != NULL)
+ *interlace_type = info_ptr->interlace_type;
+
+ /* This is redundant if we can be sure that the info_ptr values were all
+ * assigned in png_set_IHDR(). We do the check anyhow in case an
+ * application has ignored our advice not to mess with the members
+ * of info_ptr directly.
+ */
+ png_check_IHDR(png_ptr, info_ptr->width, info_ptr->height,
+ info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
+ info_ptr->compression_type, info_ptr->filter_type);
+
+ return (1);
+}
+
+#ifdef PNG_oFFs_SUPPORTED
+png_uint_32 PNGAPI
+png_get_oFFs(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
+{
+ png_debug1(1, "in %s retrieval function", "oFFs");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
+ && offset_x != NULL && offset_y != NULL && unit_type != NULL)
+ {
+ *offset_x = info_ptr->x_offset;
+ *offset_y = info_ptr->y_offset;
+ *unit_type = (int)info_ptr->offset_unit_type;
+ return (PNG_INFO_oFFs);
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+png_uint_32 PNGAPI
+png_get_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
+ png_charp *units, png_charpp *params)
+{
+ png_debug1(1, "in %s retrieval function", "pCAL");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
+ && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
+ nparams != NULL && units != NULL && params != NULL)
+ {
+ *purpose = info_ptr->pcal_purpose;
+ *X0 = info_ptr->pcal_X0;
+ *X1 = info_ptr->pcal_X1;
+ *type = (int)info_ptr->pcal_type;
+ *nparams = (int)info_ptr->pcal_nparams;
+ *units = info_ptr->pcal_units;
+ *params = info_ptr->pcal_params;
+ return (PNG_INFO_pCAL);
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+# ifdef PNG_FIXED_POINT_SUPPORTED
+# if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || \
+ defined(PNG_FLOATING_POINT_SUPPORTED)
+png_uint_32 PNGAPI
+png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ int *unit, png_fixed_point *width, png_fixed_point *height)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ *unit = info_ptr->scal_unit;
+ /*TODO: make this work without FP support; the API is currently eliminated
+ * if neither floating point APIs nor internal floating point arithmetic
+ * are enabled.
+ */
+ *width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
+ *height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
+ "sCAL height");
+ return (PNG_INFO_sCAL);
+ }
+
+ return(0);
+}
+# endif /* FLOATING_ARITHMETIC */
+# endif /* FIXED_POINT */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sCAL(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ int *unit, double *width, double *height)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ *unit = info_ptr->scal_unit;
+ *width = atof(info_ptr->scal_s_width);
+ *height = atof(info_ptr->scal_s_height);
+ return (PNG_INFO_sCAL);
+ }
+
+ return(0);
+}
+# endif /* FLOATING POINT */
+png_uint_32 PNGAPI
+png_get_sCAL_s(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ int *unit, png_charpp width, png_charpp height)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ *unit = info_ptr->scal_unit;
+ *width = info_ptr->scal_s_width;
+ *height = info_ptr->scal_s_height;
+ return (PNG_INFO_sCAL);
+ }
+
+ return(0);
+}
+#endif /* sCAL */
+
+#ifdef PNG_pHYs_SUPPORTED
+png_uint_32 PNGAPI
+png_get_pHYs(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
+{
+ png_uint_32 retval = 0;
+
+ png_debug1(1, "in %s retrieval function", "pHYs");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ if (res_x != NULL)
+ {
+ *res_x = info_ptr->x_pixels_per_unit;
+ retval |= PNG_INFO_pHYs;
+ }
+
+ if (res_y != NULL)
+ {
+ *res_y = info_ptr->y_pixels_per_unit;
+ retval |= PNG_INFO_pHYs;
+ }
+
+ if (unit_type != NULL)
+ {
+ *unit_type = (int)info_ptr->phys_unit_type;
+ retval |= PNG_INFO_pHYs;
+ }
+ }
+
+ return (retval);
+}
+#endif /* pHYs */
+
+png_uint_32 PNGAPI
+png_get_PLTE(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_colorp *palette, int *num_palette)
+{
+ png_debug1(1, "in %s retrieval function", "PLTE");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
+ && palette != NULL)
+ {
+ *palette = info_ptr->palette;
+ *num_palette = info_ptr->num_palette;
+ png_debug1(3, "num_palette = %d", *num_palette);
+ return (PNG_INFO_PLTE);
+ }
+
+ return (0);
+}
+
+#ifdef PNG_sBIT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sBIT(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_color_8p *sig_bit)
+{
+ png_debug1(1, "in %s retrieval function", "sBIT");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
+ && sig_bit != NULL)
+ {
+ *sig_bit = &(info_ptr->sig_bit);
+ return (PNG_INFO_sBIT);
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+int PNGAPI
+png_get_text(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_textp *text_ptr, int *num_text)
+{
+ if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
+ {
+ png_debug1(1, "in 0x%lx retrieval function",
+ (unsigned long)png_ptr->chunk_name);
+
+ if (text_ptr != NULL)
+ *text_ptr = info_ptr->text;
+
+ if (num_text != NULL)
+ *num_text = info_ptr->num_text;
+
+ return info_ptr->num_text;
+ }
+
+ if (num_text != NULL)
+ *num_text = 0;
+
+ return(0);
+}
+#endif
+
+#ifdef PNG_tIME_SUPPORTED
+png_uint_32 PNGAPI
+png_get_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_timep *mod_time)
+{
+ png_debug1(1, "in %s retrieval function", "tIME");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
+ && mod_time != NULL)
+ {
+ *mod_time = &(info_ptr->mod_time);
+ return (PNG_INFO_tIME);
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+png_uint_32 PNGAPI
+png_get_tRNS(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
+{
+ png_uint_32 retval = 0;
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
+ {
+ png_debug1(1, "in %s retrieval function", "tRNS");
+
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (trans_alpha != NULL)
+ {
+ *trans_alpha = info_ptr->trans_alpha;
+ retval |= PNG_INFO_tRNS;
+ }
+
+ if (trans_color != NULL)
+ *trans_color = &(info_ptr->trans_color);
+ }
+
+ else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
+ {
+ if (trans_color != NULL)
+ {
+ *trans_color = &(info_ptr->trans_color);
+ retval |= PNG_INFO_tRNS;
+ }
+
+ if (trans_alpha != NULL)
+ *trans_alpha = NULL;
+ }
+
+ if (num_trans != NULL)
+ {
+ *num_trans = info_ptr->num_trans;
+ retval |= PNG_INFO_tRNS;
+ }
+ }
+
+ return (retval);
+}
+#endif
+
+#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+int PNGAPI
+png_get_unknown_chunks(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_unknown_chunkpp unknowns)
+{
+ if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
+ {
+ *unknowns = info_ptr->unknown_chunks;
+ return info_ptr->unknown_chunks_num;
+ }
+
+ return (0);
+}
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+png_byte PNGAPI
+png_get_rgb_to_gray_status (png_const_structrp png_ptr)
+{
+ return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
+}
+#endif
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+png_voidp PNGAPI
+png_get_user_chunk_ptr(png_const_structrp png_ptr)
+{
+ return (png_ptr ? png_ptr->user_chunk_ptr : NULL);
+}
+#endif
+
+png_size_t PNGAPI
+png_get_compression_buffer_size(png_const_structrp png_ptr)
+{
+ if (png_ptr == NULL)
+ return 0;
+
+# ifdef PNG_WRITE_SUPPORTED
+ if (png_ptr->mode & PNG_IS_READ_STRUCT)
+# endif
+ {
+# ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+ return png_ptr->IDAT_read_size;
+# else
+ return PNG_IDAT_READ_SIZE;
+# endif
+ }
+
+# ifdef PNG_WRITE_SUPPORTED
+ else
+ return png_ptr->zbuffer_size;
+# endif
+}
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+/* These functions were added to libpng 1.2.6 and were enabled
+ * by default in libpng-1.4.0 */
+png_uint_32 PNGAPI
+png_get_user_width_max (png_const_structrp png_ptr)
+{
+ return (png_ptr ? png_ptr->user_width_max : 0);
+}
+
+png_uint_32 PNGAPI
+png_get_user_height_max (png_const_structrp png_ptr)
+{
+ return (png_ptr ? png_ptr->user_height_max : 0);
+}
+
+/* This function was added to libpng 1.4.0 */
+png_uint_32 PNGAPI
+png_get_chunk_cache_max (png_const_structrp png_ptr)
+{
+ return (png_ptr ? png_ptr->user_chunk_cache_max : 0);
+}
+
+/* This function was added to libpng 1.4.1 */
+png_alloc_size_t PNGAPI
+png_get_chunk_malloc_max (png_const_structrp png_ptr)
+{
+ return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
+}
+#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
+
+/* These functions were added to libpng 1.4.0 */
+#ifdef PNG_IO_STATE_SUPPORTED
+png_uint_32 PNGAPI
+png_get_io_state (png_const_structrp png_ptr)
+{
+ return png_ptr->io_state;
+}
+
+png_uint_32 PNGAPI
+png_get_io_chunk_type (png_const_structrp png_ptr)
+{
+ return png_ptr->chunk_name;
+}
+#endif /* ?PNG_IO_STATE_SUPPORTED */
+
+#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+# ifdef PNG_GET_PALETTE_MAX_SUPPORTED
+int PNGAPI
+png_get_palette_max(png_const_structp png_ptr, png_const_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return png_ptr->num_palette_max;
+
+ return (-1);
+}
+# endif
+#endif
+
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngmem.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngmem.c
new file mode 100644
index 0000000..446bc68
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngmem.c
@@ -0,0 +1,291 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngmem.c - stub functions for memory allocation
+ *
+ * Last changed in libpng 1.6.0 [February 14, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all memory allocation. Users who
+ * need special memory handling are expected to supply replacement
+ * functions for png_malloc() and png_free(), and to use
+ * png_create_read_struct_2() and png_create_write_struct_2() to
+ * identify the replacement functions.
+ */
+
+#include "pngpriv.h"
+
+#if defined(_FX_MANAGED_CODE_) && defined(__cplusplus)
+extern "C" {
+#endif
+
+void* FXMEM_DefaultAlloc(int byte_size, int);
+void FXMEM_DefaultFree(void* pointer, int);
+
+#if defined(_FX_MANAGED_CODE_) && defined(__cplusplus)
+}
+#endif
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+/* Free a png_struct */
+void /* PRIVATE */
+png_destroy_png_struct(png_structrp png_ptr)
+{
+ if (png_ptr != NULL)
+ {
+ /* png_free might call png_error and may certainly call
+ * png_get_mem_ptr, so fake a temporary png_struct to support this.
+ */
+ png_struct dummy_struct = *png_ptr;
+ memset(png_ptr, 0, (sizeof *png_ptr));
+ png_free(&dummy_struct, png_ptr);
+
+# ifdef PNG_SETJMP_SUPPORTED
+ /* We may have a jmp_buf left to deallocate. */
+ png_free_jmpbuf(&dummy_struct);
+# endif
+ }
+}
+
+/* Allocate memory. For reasonable files, size should never exceed
+ * 64K. However, zlib may allocate more then 64K if you don't tell
+ * it not to. See zconf.h and png.h for more information. zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ */
+PNG_FUNCTION(png_voidp,PNGAPI
+png_calloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+ png_voidp ret;
+
+ ret = png_malloc(png_ptr, size);
+
+ if (ret != NULL)
+ memset(ret, 0, size);
+
+ return ret;
+}
+
+/* png_malloc_base, an internal function added at libpng 1.6.0, does the work of
+ * allocating memory, taking into account limits and PNG_USER_MEM_SUPPORTED.
+ * Checking and error handling must happen outside this routine; it returns NULL
+ * if the allocation cannot be done (for any reason.)
+ */
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_malloc_base,(png_const_structrp png_ptr, png_alloc_size_t size),
+ PNG_ALLOCATED)
+{
+ /* Moved to png_malloc_base from png_malloc_default in 1.6.0; the DOS
+ * allocators have also been removed in 1.6.0, so any 16-bit system now has
+ * to implement a user memory handler. This checks to be sure it isn't
+ * called with big numbers.
+ */
+#ifdef PNG_USER_MEM_SUPPORTED
+ PNG_UNUSED(png_ptr)
+#endif
+ if (size > 0 && size <= PNG_SIZE_MAX
+# ifdef PNG_MAX_MALLOC_64K
+ && size <= 65536U
+# endif
+ )
+ {
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (png_ptr != NULL && png_ptr->malloc_fn != NULL)
+ return png_ptr->malloc_fn(png_constcast(png_structrp,png_ptr), size);
+
+ else
+#endif
+ return FXMEM_DefaultAlloc((int)size, 0);
+ //return malloc((size_t)size); /* checked for truncation above */
+ }
+
+ else
+ return NULL;
+}
+
+/* This is really here only to work round a spurious warning in GCC 4.6 and 4.7
+ * that arises because of the checks in png_realloc_array that are repeated in
+ * png_malloc_array.
+ */
+static png_voidp
+png_malloc_array_checked(png_const_structrp png_ptr, int nelements,
+ size_t element_size)
+{
+ png_alloc_size_t req = nelements; /* known to be > 0 */
+
+ if (req <= PNG_SIZE_MAX/element_size)
+ return png_malloc_base(png_ptr, req * element_size);
+
+ /* The failure case when the request is too large */
+ return NULL;
+}
+
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_malloc_array,(png_const_structrp png_ptr, int nelements,
+ size_t element_size),PNG_ALLOCATED)
+{
+ if (nelements <= 0 || element_size == 0)
+ png_error(png_ptr, "internal error: array alloc");
+
+ return png_malloc_array_checked(png_ptr, nelements, element_size);
+}
+
+PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_realloc_array,(png_const_structrp png_ptr, png_const_voidp old_array,
+ int old_elements, int add_elements, size_t element_size),PNG_ALLOCATED)
+{
+ /* These are internal errors: */
+ if (add_elements <= 0 || element_size == 0 || old_elements < 0 ||
+ (old_array == NULL && old_elements > 0))
+ png_error(png_ptr, "internal error: array realloc");
+
+ /* Check for overflow on the elements count (so the caller does not have to
+ * check.)
+ */
+ if (add_elements <= INT_MAX - old_elements)
+ {
+ png_voidp new_array = png_malloc_array_checked(png_ptr,
+ old_elements+add_elements, element_size);
+
+ if (new_array != NULL)
+ {
+ /* Because png_malloc_array worked the size calculations below cannot
+ * overflow.
+ */
+ if (old_elements > 0)
+ memcpy(new_array, old_array, element_size*(unsigned)old_elements);
+
+ memset((char*)new_array + element_size*(unsigned)old_elements, 0,
+ element_size*(unsigned)add_elements);
+
+ return new_array;
+ }
+ }
+
+ return NULL; /* error */
+}
+
+/* Various functions that have different error handling are derived from this.
+ * png_malloc always exists, but if PNG_USER_MEM_SUPPORTED is defined a separate
+ * function png_malloc_default is also provided.
+ */
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+{
+ png_voidp ret;
+
+ if (png_ptr == NULL)
+ return NULL;
+
+ ret = png_malloc_base(png_ptr, size);
+
+ if (ret == NULL)
+ png_error(png_ptr, "Out of memory"); /* 'm' means png_malloc */
+
+ return ret;
+}
+
+#ifdef PNG_USER_MEM_SUPPORTED
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc_default,(png_const_structrp png_ptr, png_alloc_size_t size),
+ PNG_ALLOCATED PNG_DEPRECATED)
+{
+ png_voidp ret;
+
+ if (png_ptr == NULL)
+ return NULL;
+
+ /* Passing 'NULL' here bypasses the application provided memory handler. */
+ ret = png_malloc_base(NULL/*use malloc*/, size);
+
+ if (ret == NULL)
+ png_error(png_ptr, "Out of Memory"); /* 'M' means png_malloc_default */
+
+ return ret;
+}
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+/* This function was added at libpng version 1.2.3. The png_malloc_warn()
+ * function will issue a png_warning and return NULL instead of issuing a
+ * png_error, if it fails to allocate the requested memory.
+ */
+PNG_FUNCTION(png_voidp,PNGAPI
+png_malloc_warn,(png_const_structrp png_ptr, png_alloc_size_t size),
+ PNG_ALLOCATED)
+{
+ if (png_ptr != NULL)
+ {
+ png_voidp ret = png_malloc_base(png_ptr, size);
+
+ if (ret != NULL)
+ return ret;
+
+ png_warning(png_ptr, "Out of memory");
+ }
+
+ return NULL;
+}
+
+/* Free a pointer allocated by png_malloc(). If ptr is NULL, return
+ * without taking any action.
+ */
+void PNGAPI
+png_free(png_const_structrp png_ptr, png_voidp ptr)
+{
+ if (png_ptr == NULL || ptr == NULL)
+ return;
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (png_ptr->free_fn != NULL)
+ png_ptr->free_fn(png_constcast(png_structrp,png_ptr), ptr);
+
+ else
+ png_free_default(png_ptr, ptr);
+}
+
+PNG_FUNCTION(void,PNGAPI
+png_free_default,(png_const_structrp png_ptr, png_voidp ptr),PNG_DEPRECATED)
+{
+ if (png_ptr == NULL || ptr == NULL)
+ return;
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+ FXMEM_DefaultFree(ptr, 0);
+ //free(ptr);
+}
+
+#ifdef PNG_USER_MEM_SUPPORTED
+/* This function is called when the application wants to use another method
+ * of allocating and freeing memory.
+ */
+void PNGAPI
+png_set_mem_fn(png_structrp png_ptr, png_voidp mem_ptr, png_malloc_ptr
+ malloc_fn, png_free_ptr free_fn)
+{
+ if (png_ptr != NULL)
+ {
+ png_ptr->mem_ptr = mem_ptr;
+ png_ptr->malloc_fn = malloc_fn;
+ png_ptr->free_fn = free_fn;
+ }
+}
+
+/* This function returns a pointer to the mem_ptr associated with the user
+ * functions. The application should free any memory associated with this
+ * pointer before png_write_destroy and png_read_destroy are called.
+ */
+png_voidp PNGAPI
+png_get_mem_ptr(png_const_structrp png_ptr)
+{
+ if (png_ptr == NULL)
+ return NULL;
+
+ return png_ptr->mem_ptr;
+}
+#endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngpread.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngpread.c
new file mode 100644
index 0000000..6d5053f
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngpread.c
@@ -0,0 +1,1292 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngpread.c - read a png file in push mode
+ *
+ * Last changed in libpng 1.6.0 [February 14, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#include "pngpriv.h"
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+
+/* Push model modes */
+#define PNG_READ_SIG_MODE 0
+#define PNG_READ_CHUNK_MODE 1
+#define PNG_READ_IDAT_MODE 2
+#define PNG_SKIP_MODE 3
+#define PNG_READ_tEXt_MODE 4
+#define PNG_READ_zTXt_MODE 5
+#define PNG_READ_DONE_MODE 6
+#define PNG_READ_iTXt_MODE 7
+#define PNG_ERROR_MODE 8
+
+void PNGAPI
+png_process_data(png_structrp png_ptr, png_inforp info_ptr,
+ png_bytep buffer, png_size_t buffer_size)
+{
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ png_push_restore_buffer(png_ptr, buffer, buffer_size);
+
+ while (png_ptr->buffer_size)
+ {
+ png_process_some_data(png_ptr, info_ptr);
+ }
+}
+
+png_size_t PNGAPI
+png_process_data_pause(png_structrp png_ptr, int save)
+{
+ if (png_ptr != NULL)
+ {
+ /* It's easiest for the caller if we do the save, then the caller doesn't
+ * have to supply the same data again:
+ */
+ if (save)
+ png_push_save_buffer(png_ptr);
+ else
+ {
+ /* This includes any pending saved bytes: */
+ png_size_t remaining = png_ptr->buffer_size;
+ png_ptr->buffer_size = 0;
+
+ /* So subtract the saved buffer size, unless all the data
+ * is actually 'saved', in which case we just return 0
+ */
+ if (png_ptr->save_buffer_size < remaining)
+ return remaining - png_ptr->save_buffer_size;
+ }
+ }
+
+ return 0;
+}
+
+png_uint_32 PNGAPI
+png_process_data_skip(png_structrp png_ptr)
+{
+ png_uint_32 remaining = 0;
+
+ if (png_ptr != NULL && png_ptr->process_mode == PNG_SKIP_MODE &&
+ png_ptr->skip_length > 0)
+ {
+ /* At the end of png_process_data the buffer size must be 0 (see the loop
+ * above) so we can detect a broken call here:
+ */
+ if (png_ptr->buffer_size != 0)
+ png_error(png_ptr,
+ "png_process_data_skip called inside png_process_data");
+
+ /* If is impossible for there to be a saved buffer at this point -
+ * otherwise we could not be in SKIP mode. This will also happen if
+ * png_process_skip is called inside png_process_data (but only very
+ * rarely.)
+ */
+ if (png_ptr->save_buffer_size != 0)
+ png_error(png_ptr, "png_process_data_skip called with saved data");
+
+ remaining = png_ptr->skip_length;
+ png_ptr->skip_length = 0;
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+ }
+
+ return remaining;
+}
+
+/* What we do with the incoming data depends on what we were previously
+ * doing before we ran out of data...
+ */
+void /* PRIVATE */
+png_process_some_data(png_structrp png_ptr, png_inforp info_ptr)
+{
+ if (png_ptr == NULL)
+ return;
+
+ switch (png_ptr->process_mode)
+ {
+ case PNG_READ_SIG_MODE:
+ {
+ png_push_read_sig(png_ptr, info_ptr);
+ break;
+ }
+
+ case PNG_READ_CHUNK_MODE:
+ {
+ png_push_read_chunk(png_ptr, info_ptr);
+ break;
+ }
+
+ case PNG_READ_IDAT_MODE:
+ {
+ png_push_read_IDAT(png_ptr);
+ break;
+ }
+
+ case PNG_SKIP_MODE:
+ {
+ png_push_crc_finish(png_ptr);
+ break;
+ }
+
+ default:
+ {
+ png_ptr->buffer_size = 0;
+ break;
+ }
+ }
+}
+
+/* Read any remaining signature bytes from the stream and compare them with
+ * the correct PNG signature. It is possible that this routine is called
+ * with bytes already read from the signature, either because they have been
+ * checked by the calling application, or because of multiple calls to this
+ * routine.
+ */
+void /* PRIVATE */
+png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr)
+{
+ png_size_t num_checked = png_ptr->sig_bytes, /* SAFE, does not exceed 8 */
+ num_to_check = 8 - num_checked;
+
+ if (png_ptr->buffer_size < num_to_check)
+ {
+ num_to_check = png_ptr->buffer_size;
+ }
+
+ png_push_fill_buffer(png_ptr, &(info_ptr->signature[num_checked]),
+ num_to_check);
+ png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check);
+
+ if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
+ {
+ if (num_checked < 4 &&
+ png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
+ png_error(png_ptr, "Not a PNG file");
+
+ else
+ png_error(png_ptr, "PNG file corrupted by ASCII conversion");
+ }
+ else
+ {
+ if (png_ptr->sig_bytes >= 8)
+ {
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+ }
+ }
+}
+
+void /* PRIVATE */
+png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
+{
+ png_uint_32 chunk_name;
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ int keep; /* unknown handling method */
+#endif
+
+ /* First we make sure we have enough data for the 4 byte chunk name
+ * and the 4 byte chunk length before proceeding with decoding the
+ * chunk data. To fully decode each of these chunks, we also make
+ * sure we have enough data in the buffer for the 4 byte CRC at the
+ * end of every chunk (except IDAT, which is handled separately).
+ */
+ if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
+ {
+ png_byte chunk_length[4];
+ png_byte chunk_tag[4];
+
+ if (png_ptr->buffer_size < 8)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_fill_buffer(png_ptr, chunk_length, 4);
+ png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
+ png_reset_crc(png_ptr);
+ png_crc_read(png_ptr, chunk_tag, 4);
+ png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
+ png_check_chunk_name(png_ptr, png_ptr->chunk_name);
+ png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
+ }
+
+ chunk_name = png_ptr->chunk_name;
+
+ if (chunk_name == png_IDAT)
+ {
+ if (png_ptr->mode & PNG_AFTER_IDAT)
+ png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
+
+ /* If we reach an IDAT chunk, this means we have read all of the
+ * header chunks, and we can start reading the image (or if this
+ * is called after the image has been read - we have an error).
+ */
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before IDAT");
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ !(png_ptr->mode & PNG_HAVE_PLTE))
+ png_error(png_ptr, "Missing PLTE before IDAT");
+
+ png_ptr->mode |= PNG_HAVE_IDAT;
+
+ if (!(png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
+ if (png_ptr->push_length == 0)
+ return;
+
+ if (png_ptr->mode & PNG_AFTER_IDAT)
+ png_benign_error(png_ptr, "Too many IDATs found");
+ }
+
+ if (chunk_name == png_IHDR)
+ {
+ if (png_ptr->push_length != 13)
+ png_error(png_ptr, "Invalid IHDR length");
+
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+ else if (chunk_name == png_IEND)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length);
+
+ png_ptr->process_mode = PNG_READ_DONE_MODE;
+ png_push_have_end(png_ptr, info_ptr);
+ }
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length, keep);
+
+ if (chunk_name == png_PLTE)
+ png_ptr->mode |= PNG_HAVE_PLTE;
+ }
+
+#endif
+ else if (chunk_name == png_PLTE)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+ png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+ else if (chunk_name == png_IDAT)
+ {
+ png_ptr->idat_size = png_ptr->push_length;
+ png_ptr->process_mode = PNG_READ_IDAT_MODE;
+ png_push_have_info(png_ptr, info_ptr);
+ png_ptr->zstream.avail_out =
+ (uInt) PNG_ROWBYTES(png_ptr->pixel_depth,
+ png_ptr->iwidth) + 1;
+ png_ptr->zstream.next_out = png_ptr->row_buf;
+ return;
+ }
+
+#ifdef PNG_READ_gAMA_SUPPORTED
+ else if (png_ptr->chunk_name == png_gAMA)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_sBIT_SUPPORTED
+ else if (png_ptr->chunk_name == png_sBIT)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_cHRM_SUPPORTED
+ else if (png_ptr->chunk_name == png_cHRM)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_sRGB_SUPPORTED
+ else if (chunk_name == png_sRGB)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_iCCP_SUPPORTED
+ else if (png_ptr->chunk_name == png_iCCP)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_sPLT_SUPPORTED
+ else if (chunk_name == png_sPLT)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_tRNS_SUPPORTED
+ else if (chunk_name == png_tRNS)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_bKGD_SUPPORTED
+ else if (chunk_name == png_bKGD)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_hIST_SUPPORTED
+ else if (chunk_name == png_hIST)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_pHYs_SUPPORTED
+ else if (chunk_name == png_pHYs)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_oFFs_SUPPORTED
+ else if (chunk_name == png_oFFs)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length);
+ }
+#endif
+
+#ifdef PNG_READ_pCAL_SUPPORTED
+ else if (chunk_name == png_pCAL)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_sCAL_SUPPORTED
+ else if (chunk_name == png_sCAL)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_tIME_SUPPORTED
+ else if (chunk_name == png_tIME)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_tEXt_SUPPORTED
+ else if (chunk_name == png_tEXt)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+ else if (chunk_name == png_zTXt)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+ else if (chunk_name == png_iTXt)
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+ else
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+ png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length,
+ PNG_HANDLE_CHUNK_AS_DEFAULT);
+ }
+
+ png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
+}
+
+void /* PRIVATE */
+png_push_crc_skip(png_structrp png_ptr, png_uint_32 skip)
+{
+ png_ptr->process_mode = PNG_SKIP_MODE;
+ png_ptr->skip_length = skip;
+}
+
+void /* PRIVATE */
+png_push_crc_finish(png_structrp png_ptr)
+{
+ if (png_ptr->skip_length && png_ptr->save_buffer_size)
+ {
+ png_size_t save_size = png_ptr->save_buffer_size;
+ png_uint_32 skip_length = png_ptr->skip_length;
+
+ /* We want the smaller of 'skip_length' and 'save_buffer_size', but
+ * they are of different types and we don't know which variable has the
+ * fewest bits. Carefully select the smaller and cast it to the type of
+ * the larger - this cannot overflow. Do not cast in the following test
+ * - it will break on either 16 or 64 bit platforms.
+ */
+ if (skip_length < save_size)
+ save_size = (png_size_t)skip_length;
+
+ else
+ skip_length = (png_uint_32)save_size;
+
+ png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
+
+ png_ptr->skip_length -= skip_length;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->save_buffer_size -= save_size;
+ png_ptr->save_buffer_ptr += save_size;
+ }
+ if (png_ptr->skip_length && png_ptr->current_buffer_size)
+ {
+ png_size_t save_size = png_ptr->current_buffer_size;
+ png_uint_32 skip_length = png_ptr->skip_length;
+
+ /* We want the smaller of 'skip_length' and 'current_buffer_size', here,
+ * the same problem exists as above and the same solution.
+ */
+ if (skip_length < save_size)
+ save_size = (png_size_t)skip_length;
+
+ else
+ skip_length = (png_uint_32)save_size;
+
+ png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
+
+ png_ptr->skip_length -= skip_length;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->current_buffer_size -= save_size;
+ png_ptr->current_buffer_ptr += save_size;
+ }
+ if (!png_ptr->skip_length)
+ {
+ if (png_ptr->buffer_size < 4)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_crc_finish(png_ptr, 0);
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+ }
+}
+
+void PNGCBAPI
+png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
+{
+ png_bytep ptr;
+
+ if (png_ptr == NULL)
+ return;
+
+ ptr = buffer;
+ if (png_ptr->save_buffer_size)
+ {
+ png_size_t save_size;
+
+ if (length < png_ptr->save_buffer_size)
+ save_size = length;
+
+ else
+ save_size = png_ptr->save_buffer_size;
+
+ memcpy(ptr, png_ptr->save_buffer_ptr, save_size);
+ length -= save_size;
+ ptr += save_size;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->save_buffer_size -= save_size;
+ png_ptr->save_buffer_ptr += save_size;
+ }
+ if (length && png_ptr->current_buffer_size)
+ {
+ png_size_t save_size;
+
+ if (length < png_ptr->current_buffer_size)
+ save_size = length;
+
+ else
+ save_size = png_ptr->current_buffer_size;
+
+ memcpy(ptr, png_ptr->current_buffer_ptr, save_size);
+ png_ptr->buffer_size -= save_size;
+ png_ptr->current_buffer_size -= save_size;
+ png_ptr->current_buffer_ptr += save_size;
+ }
+}
+
+void /* PRIVATE */
+png_push_save_buffer(png_structrp png_ptr)
+{
+ if (png_ptr->save_buffer_size)
+ {
+ if (png_ptr->save_buffer_ptr != png_ptr->save_buffer)
+ {
+ png_size_t i, istop;
+ png_bytep sp;
+ png_bytep dp;
+
+ istop = png_ptr->save_buffer_size;
+ for (i = 0, sp = png_ptr->save_buffer_ptr, dp = png_ptr->save_buffer;
+ i < istop; i++, sp++, dp++)
+ {
+ *dp = *sp;
+ }
+ }
+ }
+ if (png_ptr->save_buffer_size + png_ptr->current_buffer_size >
+ png_ptr->save_buffer_max)
+ {
+ png_size_t new_max;
+ png_bytep old_buffer;
+
+ if (png_ptr->save_buffer_size > PNG_SIZE_MAX -
+ (png_ptr->current_buffer_size + 256))
+ {
+ png_error(png_ptr, "Potential overflow of save_buffer");
+ }
+
+ new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256;
+ old_buffer = png_ptr->save_buffer;
+ png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr,
+ (png_size_t)new_max);
+
+ if (png_ptr->save_buffer == NULL)
+ {
+ png_free(png_ptr, old_buffer);
+ png_error(png_ptr, "Insufficient memory for save_buffer");
+ }
+
+ memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
+ png_free(png_ptr, old_buffer);
+ png_ptr->save_buffer_max = new_max;
+ }
+ if (png_ptr->current_buffer_size)
+ {
+ memcpy(png_ptr->save_buffer + png_ptr->save_buffer_size,
+ png_ptr->current_buffer_ptr, png_ptr->current_buffer_size);
+ png_ptr->save_buffer_size += png_ptr->current_buffer_size;
+ png_ptr->current_buffer_size = 0;
+ }
+ png_ptr->save_buffer_ptr = png_ptr->save_buffer;
+ png_ptr->buffer_size = 0;
+}
+
+void /* PRIVATE */
+png_push_restore_buffer(png_structrp png_ptr, png_bytep buffer,
+ png_size_t buffer_length)
+{
+ png_ptr->current_buffer = buffer;
+ png_ptr->current_buffer_size = buffer_length;
+ png_ptr->buffer_size = buffer_length + png_ptr->save_buffer_size;
+ png_ptr->current_buffer_ptr = png_ptr->current_buffer;
+}
+
+void /* PRIVATE */
+png_push_read_IDAT(png_structrp png_ptr)
+{
+ if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
+ {
+ png_byte chunk_length[4];
+ png_byte chunk_tag[4];
+
+ /* TODO: this code can be commoned up with the same code in push_read */
+ if (png_ptr->buffer_size < 8)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_fill_buffer(png_ptr, chunk_length, 4);
+ png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
+ png_reset_crc(png_ptr);
+ png_crc_read(png_ptr, chunk_tag, 4);
+ png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
+ png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
+
+ if (png_ptr->chunk_name != png_IDAT)
+ {
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+
+ if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
+ png_error(png_ptr, "Not enough compressed data");
+
+ return;
+ }
+
+ png_ptr->idat_size = png_ptr->push_length;
+ }
+
+ if (png_ptr->idat_size && png_ptr->save_buffer_size)
+ {
+ png_size_t save_size = png_ptr->save_buffer_size;
+ png_uint_32 idat_size = png_ptr->idat_size;
+
+ /* We want the smaller of 'idat_size' and 'current_buffer_size', but they
+ * are of different types and we don't know which variable has the fewest
+ * bits. Carefully select the smaller and cast it to the type of the
+ * larger - this cannot overflow. Do not cast in the following test - it
+ * will break on either 16 or 64 bit platforms.
+ */
+ if (idat_size < save_size)
+ save_size = (png_size_t)idat_size;
+
+ else
+ idat_size = (png_uint_32)save_size;
+
+ png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
+
+ png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size);
+
+ png_ptr->idat_size -= idat_size;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->save_buffer_size -= save_size;
+ png_ptr->save_buffer_ptr += save_size;
+ }
+
+ if (png_ptr->idat_size && png_ptr->current_buffer_size)
+ {
+ png_size_t save_size = png_ptr->current_buffer_size;
+ png_uint_32 idat_size = png_ptr->idat_size;
+
+ /* We want the smaller of 'idat_size' and 'current_buffer_size', but they
+ * are of different types and we don't know which variable has the fewest
+ * bits. Carefully select the smaller and cast it to the type of the
+ * larger - this cannot overflow.
+ */
+ if (idat_size < save_size)
+ save_size = (png_size_t)idat_size;
+
+ else
+ idat_size = (png_uint_32)save_size;
+
+ png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
+
+ png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size);
+
+ png_ptr->idat_size -= idat_size;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->current_buffer_size -= save_size;
+ png_ptr->current_buffer_ptr += save_size;
+ }
+ if (!png_ptr->idat_size)
+ {
+ if (png_ptr->buffer_size < 4)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_crc_finish(png_ptr, 0);
+ png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ png_ptr->zowner = 0;
+ }
+}
+
+void /* PRIVATE */
+png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer,
+ png_size_t buffer_length)
+{
+ /* The caller checks for a non-zero buffer length. */
+ if (!(buffer_length > 0) || buffer == NULL)
+ png_error(png_ptr, "No IDAT data (internal error)");
+
+ /* This routine must process all the data it has been given
+ * before returning, calling the row callback as required to
+ * handle the uncompressed results.
+ */
+ png_ptr->zstream.next_in = buffer;
+ /* TODO: WARNING: TRUNCATION ERROR: DANGER WILL ROBINSON: */
+ png_ptr->zstream.avail_in = (uInt)buffer_length;
+
+ /* Keep going until the decompressed data is all processed
+ * or the stream marked as finished.
+ */
+ while (png_ptr->zstream.avail_in > 0 &&
+ !(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
+ {
+ int ret;
+
+ /* We have data for zlib, but we must check that zlib
+ * has someplace to put the results. It doesn't matter
+ * if we don't expect any results -- it may be the input
+ * data is just the LZ end code.
+ */
+ if (!(png_ptr->zstream.avail_out > 0))
+ {
+ /* TODO: WARNING: TRUNCATION ERROR: DANGER WILL ROBINSON: */
+ png_ptr->zstream.avail_out = (uInt)(PNG_ROWBYTES(png_ptr->pixel_depth,
+ png_ptr->iwidth) + 1);
+
+ png_ptr->zstream.next_out = png_ptr->row_buf;
+ }
+
+ /* Using Z_SYNC_FLUSH here means that an unterminated
+ * LZ stream (a stream with a missing end code) can still
+ * be handled, otherwise (Z_NO_FLUSH) a future zlib
+ * implementation might defer output and therefore
+ * change the current behavior (see comments in inflate.c
+ * for why this doesn't happen at present with zlib 1.2.5).
+ */
+ ret = inflate(&png_ptr->zstream, Z_SYNC_FLUSH);
+
+ /* Check for any failure before proceeding. */
+ if (ret != Z_OK && ret != Z_STREAM_END)
+ {
+ /* Terminate the decompression. */
+ png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
+ png_ptr->zowner = 0;
+
+ /* This may be a truncated stream (missing or
+ * damaged end code). Treat that as a warning.
+ */
+ if (png_ptr->row_number >= png_ptr->num_rows ||
+ png_ptr->pass > 6)
+ png_warning(png_ptr, "Truncated compressed data in IDAT");
+
+ else
+ png_error(png_ptr, "Decompression error in IDAT");
+
+ /* Skip the check on unprocessed input */
+ return;
+ }
+
+ /* Did inflate output any data? */
+ if (png_ptr->zstream.next_out != png_ptr->row_buf)
+ {
+ /* Is this unexpected data after the last row?
+ * If it is, artificially terminate the LZ output
+ * here.
+ */
+ if (png_ptr->row_number >= png_ptr->num_rows ||
+ png_ptr->pass > 6)
+ {
+ /* Extra data. */
+ png_warning(png_ptr, "Extra compressed data in IDAT");
+ png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
+ png_ptr->zowner = 0;
+
+ /* Do no more processing; skip the unprocessed
+ * input check below.
+ */
+ return;
+ }
+
+ /* Do we have a complete row? */
+ if (png_ptr->zstream.avail_out == 0)
+ png_push_process_row(png_ptr);
+ }
+
+ /* And check for the end of the stream. */
+ if (ret == Z_STREAM_END)
+ png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
+ }
+
+ /* All the data should have been processed, if anything
+ * is left at this point we have bytes of IDAT data
+ * after the zlib end code.
+ */
+ if (png_ptr->zstream.avail_in > 0)
+ png_warning(png_ptr, "Extra compression data in IDAT");
+}
+
+void /* PRIVATE */
+png_push_process_row(png_structrp png_ptr)
+{
+ /* 1.5.6: row_info moved out of png_struct to a local here. */
+ png_row_info row_info;
+
+ row_info.width = png_ptr->iwidth; /* NOTE: width of current interlaced row */
+ row_info.color_type = png_ptr->color_type;
+ row_info.bit_depth = png_ptr->bit_depth;
+ row_info.channels = png_ptr->channels;
+ row_info.pixel_depth = png_ptr->pixel_depth;
+ row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
+
+ if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
+ {
+ if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
+ png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
+ png_ptr->prev_row + 1, png_ptr->row_buf[0]);
+ else
+ png_error(png_ptr, "bad adaptive filter value");
+ }
+
+ /* libpng 1.5.6: the following line was copying png_ptr->rowbytes before
+ * 1.5.6, while the buffer really is this big in current versions of libpng
+ * it may not be in the future, so this was changed just to copy the
+ * interlaced row count:
+ */
+ memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1);
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+ if (png_ptr->transformations)
+ png_do_read_transformations(png_ptr, &row_info);
+#endif
+
+ /* The transformed pixel depth should match the depth now in row_info. */
+ if (png_ptr->transformed_pixel_depth == 0)
+ {
+ png_ptr->transformed_pixel_depth = row_info.pixel_depth;
+ if (row_info.pixel_depth > png_ptr->maximum_pixel_depth)
+ png_error(png_ptr, "progressive row overflow");
+ }
+
+ else if (png_ptr->transformed_pixel_depth != row_info.pixel_depth)
+ png_error(png_ptr, "internal progressive row size calculation error");
+
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Blow up interlaced rows to full size */
+ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
+ {
+ if (png_ptr->pass < 6)
+ png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
+ png_ptr->transformations);
+
+ switch (png_ptr->pass)
+ {
+ case 0:
+ {
+ int i;
+ for (i = 0; i < 8 && png_ptr->pass == 0; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr); /* Updates png_ptr->pass */
+ }
+
+ if (png_ptr->pass == 2) /* Pass 1 might be empty */
+ {
+ for (i = 0; i < 4 && png_ptr->pass == 2; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ if (png_ptr->pass == 4 && png_ptr->height <= 4)
+ {
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ if (png_ptr->pass == 6 && png_ptr->height <= 4)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ break;
+ }
+
+ case 1:
+ {
+ int i;
+ for (i = 0; i < 8 && png_ptr->pass == 1; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 2) /* Skip top 4 generated rows */
+ {
+ for (i = 0; i < 4 && png_ptr->pass == 2; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ break;
+ }
+
+ case 2:
+ {
+ int i;
+
+ for (i = 0; i < 4 && png_ptr->pass == 2; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ for (i = 0; i < 4 && png_ptr->pass == 2; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 4) /* Pass 3 might be empty */
+ {
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ break;
+ }
+
+ case 3:
+ {
+ int i;
+
+ for (i = 0; i < 4 && png_ptr->pass == 3; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 4) /* Skip top two generated rows */
+ {
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ break;
+ }
+
+ case 4:
+ {
+ int i;
+
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 6) /* Pass 5 might be empty */
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ break;
+ }
+
+ case 5:
+ {
+ int i;
+
+ for (i = 0; i < 2 && png_ptr->pass == 5; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 6) /* Skip top generated row */
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ break;
+ }
+
+ default:
+ case 6:
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+
+ if (png_ptr->pass != 6)
+ break;
+
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+ }
+ else
+#endif
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+}
+
+void /* PRIVATE */
+png_read_push_finish_row(png_structrp png_ptr)
+{
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ static PNG_CONST png_byte png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ static PNG_CONST png_byte png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
+
+ /* Height of interlace block. This is not currently used - if you need
+ * it, uncomment it here and in png.h
+ static PNG_CONST png_byte png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
+ */
+#endif
+
+ png_ptr->row_number++;
+ if (png_ptr->row_number < png_ptr->num_rows)
+ return;
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (png_ptr->interlaced)
+ {
+ png_ptr->row_number = 0;
+ memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+
+ do
+ {
+ png_ptr->pass++;
+ if ((png_ptr->pass == 1 && png_ptr->width < 5) ||
+ (png_ptr->pass == 3 && png_ptr->width < 3) ||
+ (png_ptr->pass == 5 && png_ptr->width < 2))
+ png_ptr->pass++;
+
+ if (png_ptr->pass > 7)
+ png_ptr->pass--;
+
+ if (png_ptr->pass >= 7)
+ break;
+
+ png_ptr->iwidth = (png_ptr->width +
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+
+ if (png_ptr->transformations & PNG_INTERLACE)
+ break;
+
+ png_ptr->num_rows = (png_ptr->height +
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
+
+ } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
+ }
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+}
+
+void /* PRIVATE */
+png_push_have_info(png_structrp png_ptr, png_inforp info_ptr)
+{
+ if (png_ptr->info_fn != NULL)
+ (*(png_ptr->info_fn))(png_ptr, info_ptr);
+}
+
+void /* PRIVATE */
+png_push_have_end(png_structrp png_ptr, png_inforp info_ptr)
+{
+ if (png_ptr->end_fn != NULL)
+ (*(png_ptr->end_fn))(png_ptr, info_ptr);
+}
+
+void /* PRIVATE */
+png_push_have_row(png_structrp png_ptr, png_bytep row)
+{
+ if (png_ptr->row_fn != NULL)
+ (*(png_ptr->row_fn))(png_ptr, row, png_ptr->row_number,
+ (int)png_ptr->pass);
+}
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+void PNGAPI
+png_progressive_combine_row(png_const_structrp png_ptr, png_bytep old_row,
+ png_const_bytep new_row)
+{
+ if (png_ptr == NULL)
+ return;
+
+ /* new_row is a flag here - if it is NULL then the app callback was called
+ * from an empty row (see the calls to png_struct::row_fn below), otherwise
+ * it must be png_ptr->row_buf+1
+ */
+ if (new_row != NULL)
+ png_combine_row(png_ptr, old_row, 1/*display*/);
+}
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
+void PNGAPI
+png_set_progressive_read_fn(png_structrp png_ptr, png_voidp progressive_ptr,
+ png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
+ png_progressive_end_ptr end_fn)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->info_fn = info_fn;
+ png_ptr->row_fn = row_fn;
+ png_ptr->end_fn = end_fn;
+
+ png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer);
+}
+
+png_voidp PNGAPI
+png_get_progressive_ptr(png_const_structrp png_ptr)
+{
+ if (png_ptr == NULL)
+ return (NULL);
+
+ return png_ptr->io_ptr;
+}
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngread.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngread.c
new file mode 100644
index 0000000..3918e83
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngread.c
@@ -0,0 +1,4001 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngread.c - read a PNG file
+ *
+ * Last changed in libpng 1.6.1 [March 28, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file contains routines that an application calls directly to
+ * read a PNG file or stream.
+ */
+
+#include "pngpriv.h"
+#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
+# include <errno.h>
+#endif
+
+#ifdef PNG_READ_SUPPORTED
+
+/* Create a PNG structure for reading, and allocate any memory needed. */
+PNG_FUNCTION(png_structp,PNGAPI
+png_create_read_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED)
+{
+#ifndef PNG_USER_MEM_SUPPORTED
+ png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
+ error_fn, warn_fn, NULL, NULL, NULL);
+#else
+ return png_create_read_struct_2(user_png_ver, error_ptr, error_fn,
+ warn_fn, NULL, NULL, NULL);
+}
+
+/* Alternate create PNG structure for reading, and allocate any memory
+ * needed.
+ */
+PNG_FUNCTION(png_structp,PNGAPI
+png_create_read_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
+{
+ png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
+ error_fn, warn_fn, mem_ptr, malloc_fn, free_fn);
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+ if (png_ptr != NULL)
+ {
+ png_ptr->mode = PNG_IS_READ_STRUCT;
+
+ /* Added in libpng-1.6.0; this can be used to detect a read structure if
+ * required (it will be zero in a write structure.)
+ */
+# ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+ png_ptr->IDAT_read_size = PNG_IDAT_READ_SIZE;
+# endif
+
+# ifdef PNG_BENIGN_READ_ERRORS_SUPPORTED
+ png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
+
+ /* In stable builds only warn if an application error can be completely
+ * handled.
+ */
+# if PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC
+ png_ptr->flags |= PNG_FLAG_APP_WARNINGS_WARN;
+# endif
+# endif
+
+ /* TODO: delay this, it can be done in png_init_io (if the app doesn't
+ * do it itself) avoiding setting the default function if it is not
+ * required.
+ */
+ png_set_read_fn(png_ptr, NULL, NULL);
+ }
+
+ return png_ptr;
+}
+
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the information before the actual image data. This has been
+ * changed in v0.90 to allow reading a file that already has the magic
+ * bytes read from the stream. You can tell libpng how many bytes have
+ * been read from the beginning of the stream (up to the maximum of 8)
+ * via png_set_sig_bytes(), and we will only check the remaining bytes
+ * here. The application can then have access to the signature bytes we
+ * read if it is determined that this isn't a valid PNG file.
+ */
+void PNGAPI
+png_read_info(png_structrp png_ptr, png_inforp info_ptr)
+{
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ int keep;
+#endif
+
+ png_debug(1, "in png_read_info");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ /* Read and check the PNG file signature. */
+ png_read_sig(png_ptr, info_ptr);
+
+ for (;;)
+ {
+ png_uint_32 length = png_read_chunk_header(png_ptr);
+ png_uint_32 chunk_name = png_ptr->chunk_name;
+
+ /* IDAT logic needs to happen here to simplify getting the two flags
+ * right.
+ */
+ if (chunk_name == png_IDAT)
+ {
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "Missing IHDR before IDAT");
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ !(png_ptr->mode & PNG_HAVE_PLTE))
+ png_chunk_error(png_ptr, "Missing PLTE before IDAT");
+
+ else if (png_ptr->mode & PNG_AFTER_IDAT)
+ png_chunk_benign_error(png_ptr, "Too many IDATs found");
+
+ png_ptr->mode |= PNG_HAVE_IDAT;
+ }
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+ /* This should be a binary subdivision search or a hash for
+ * matching the chunk name rather than a linear search.
+ */
+ if (chunk_name == png_IHDR)
+ png_handle_IHDR(png_ptr, info_ptr, length);
+
+ else if (chunk_name == png_IEND)
+ png_handle_IEND(png_ptr, info_ptr, length);
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0)
+ {
+ png_handle_unknown(png_ptr, info_ptr, length, keep);
+
+ if (chunk_name == png_PLTE)
+ png_ptr->mode |= PNG_HAVE_PLTE;
+
+ else if (chunk_name == png_IDAT)
+ {
+ png_ptr->idat_size = 0; /* It has been consumed */
+ break;
+ }
+ }
+#endif
+ else if (chunk_name == png_PLTE)
+ png_handle_PLTE(png_ptr, info_ptr, length);
+
+ else if (chunk_name == png_IDAT)
+ {
+ png_ptr->idat_size = length;
+ break;
+ }
+
+#ifdef PNG_READ_bKGD_SUPPORTED
+ else if (chunk_name == png_bKGD)
+ png_handle_bKGD(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_cHRM_SUPPORTED
+ else if (chunk_name == png_cHRM)
+ png_handle_cHRM(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_gAMA_SUPPORTED
+ else if (chunk_name == png_gAMA)
+ png_handle_gAMA(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_hIST_SUPPORTED
+ else if (chunk_name == png_hIST)
+ png_handle_hIST(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_oFFs_SUPPORTED
+ else if (chunk_name == png_oFFs)
+ png_handle_oFFs(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_pCAL_SUPPORTED
+ else if (chunk_name == png_pCAL)
+ png_handle_pCAL(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_sCAL_SUPPORTED
+ else if (chunk_name == png_sCAL)
+ png_handle_sCAL(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_pHYs_SUPPORTED
+ else if (chunk_name == png_pHYs)
+ png_handle_pHYs(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_sBIT_SUPPORTED
+ else if (chunk_name == png_sBIT)
+ png_handle_sBIT(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+ else if (chunk_name == png_sRGB)
+ png_handle_sRGB(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_iCCP_SUPPORTED
+ else if (chunk_name == png_iCCP)
+ png_handle_iCCP(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_sPLT_SUPPORTED
+ else if (chunk_name == png_sPLT)
+ png_handle_sPLT(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_tEXt_SUPPORTED
+ else if (chunk_name == png_tEXt)
+ png_handle_tEXt(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_tIME_SUPPORTED
+ else if (chunk_name == png_tIME)
+ png_handle_tIME(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_tRNS_SUPPORTED
+ else if (chunk_name == png_tRNS)
+ png_handle_tRNS(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_zTXt_SUPPORTED
+ else if (chunk_name == png_zTXt)
+ png_handle_zTXt(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_iTXt_SUPPORTED
+ else if (chunk_name == png_iTXt)
+ png_handle_iTXt(png_ptr, info_ptr, length);
+#endif
+
+ else
+ png_handle_unknown(png_ptr, info_ptr, length,
+ PNG_HANDLE_CHUNK_AS_DEFAULT);
+ }
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+/* Optional call to update the users info_ptr structure */
+void PNGAPI
+png_read_update_info(png_structrp png_ptr, png_inforp info_ptr)
+{
+ png_debug(1, "in png_read_update_info");
+
+ if (png_ptr != NULL)
+ {
+ if ((png_ptr->flags & PNG_FLAG_ROW_INIT) == 0)
+ {
+ png_read_start_row(png_ptr);
+
+# ifdef PNG_READ_TRANSFORMS_SUPPORTED
+ png_read_transform_info(png_ptr, info_ptr);
+# else
+ PNG_UNUSED(info_ptr)
+# endif
+ }
+
+ /* New in 1.6.0 this avoids the bug of doing the initializations twice */
+ else
+ png_app_error(png_ptr,
+ "png_read_update_info/png_start_read_image: duplicate call");
+ }
+}
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Initialize palette, background, etc, after transformations
+ * are set, but before any reading takes place. This allows
+ * the user to obtain a gamma-corrected palette, for example.
+ * If the user doesn't call this, we will do it ourselves.
+ */
+void PNGAPI
+png_start_read_image(png_structrp png_ptr)
+{
+ png_debug(1, "in png_start_read_image");
+
+ if (png_ptr != NULL)
+ {
+ if ((png_ptr->flags & PNG_FLAG_ROW_INIT) == 0)
+ png_read_start_row(png_ptr);
+
+ /* New in 1.6.0 this avoids the bug of doing the initializations twice */
+ else
+ png_app_error(png_ptr,
+ "png_start_read_image/png_read_update_info: duplicate call");
+ }
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+void PNGAPI
+png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row)
+{
+ png_row_info row_info;
+
+ if (png_ptr == NULL)
+ return;
+
+ png_debug2(1, "in png_read_row (row %lu, pass %d)",
+ (unsigned long)png_ptr->row_number, png_ptr->pass);
+
+ /* png_read_start_row sets the information (in particular iwidth) for this
+ * interlace pass.
+ */
+ if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ png_read_start_row(png_ptr);
+
+ /* 1.5.6: row_info moved out of png_struct to a local here. */
+ row_info.width = png_ptr->iwidth; /* NOTE: width of current interlaced row */
+ row_info.color_type = png_ptr->color_type;
+ row_info.bit_depth = png_ptr->bit_depth;
+ row_info.channels = png_ptr->channels;
+ row_info.pixel_depth = png_ptr->pixel_depth;
+ row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
+
+ if (png_ptr->row_number == 0 && png_ptr->pass == 0)
+ {
+ /* Check for transforms that have been set but were defined out */
+#if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED)
+ if (png_ptr->transformations & PNG_INVERT_MONO)
+ png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined");
+#endif
+
+#if defined(PNG_WRITE_FILLER_SUPPORTED) && !defined(PNG_READ_FILLER_SUPPORTED)
+ if (png_ptr->transformations & PNG_FILLER)
+ png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined");
+#endif
+
+#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \
+ !defined(PNG_READ_PACKSWAP_SUPPORTED)
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined");
+#endif
+
+#if defined(PNG_WRITE_PACK_SUPPORTED) && !defined(PNG_READ_PACK_SUPPORTED)
+ if (png_ptr->transformations & PNG_PACK)
+ png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined");
+#endif
+
+#if defined(PNG_WRITE_SHIFT_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED)
+ if (png_ptr->transformations & PNG_SHIFT)
+ png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined");
+#endif
+
+#if defined(PNG_WRITE_BGR_SUPPORTED) && !defined(PNG_READ_BGR_SUPPORTED)
+ if (png_ptr->transformations & PNG_BGR)
+ png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined");
+#endif
+
+#if defined(PNG_WRITE_SWAP_SUPPORTED) && !defined(PNG_READ_SWAP_SUPPORTED)
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined");
+#endif
+ }
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* If interlaced and we do not need a new row, combine row and return.
+ * Notice that the pixels we have from previous rows have been transformed
+ * already; we can only combine like with like (transformed or
+ * untransformed) and, because of the libpng API for interlaced images, this
+ * means we must transform before de-interlacing.
+ */
+ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
+ {
+ switch (png_ptr->pass)
+ {
+ case 0:
+ if (png_ptr->row_number & 0x07)
+ {
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 1:
+ if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
+ {
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 2:
+ if ((png_ptr->row_number & 0x07) != 4)
+ {
+ if (dsp_row != NULL && (png_ptr->row_number & 4))
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 3:
+ if ((png_ptr->row_number & 3) || png_ptr->width < 3)
+ {
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 4:
+ if ((png_ptr->row_number & 3) != 2)
+ {
+ if (dsp_row != NULL && (png_ptr->row_number & 2))
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 5:
+ if ((png_ptr->row_number & 1) || png_ptr->width < 2)
+ {
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ default:
+ case 6:
+ if (!(png_ptr->row_number & 1))
+ {
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IDAT))
+ png_error(png_ptr, "Invalid attempt to read row data");
+
+ /* Fill the row with IDAT data: */
+ png_read_IDAT_data(png_ptr, png_ptr->row_buf, row_info.rowbytes + 1);
+
+ if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
+ {
+ if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
+ png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
+ png_ptr->prev_row + 1, png_ptr->row_buf[0]);
+ else
+ png_error(png_ptr, "bad adaptive filter value");
+ }
+
+ /* libpng 1.5.6: the following line was copying png_ptr->rowbytes before
+ * 1.5.6, while the buffer really is this big in current versions of libpng
+ * it may not be in the future, so this was changed just to copy the
+ * interlaced count:
+ */
+ memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1);
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
+ {
+ /* Intrapixel differencing */
+ png_do_read_intrapixel(&row_info, png_ptr->row_buf + 1);
+ }
+#endif
+
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+ if (png_ptr->transformations)
+ png_do_read_transformations(png_ptr, &row_info);
+#endif
+
+ /* The transformed pixel depth should match the depth now in row_info. */
+ if (png_ptr->transformed_pixel_depth == 0)
+ {
+ png_ptr->transformed_pixel_depth = row_info.pixel_depth;
+ if (row_info.pixel_depth > png_ptr->maximum_pixel_depth)
+ png_error(png_ptr, "sequential row overflow");
+ }
+
+ else if (png_ptr->transformed_pixel_depth != row_info.pixel_depth)
+ png_error(png_ptr, "internal sequential row size calculation error");
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Blow up interlaced rows to full size */
+ if (png_ptr->interlaced &&
+ (png_ptr->transformations & PNG_INTERLACE))
+ {
+ if (png_ptr->pass < 6)
+ png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
+ png_ptr->transformations);
+
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row, 1/*display*/);
+
+ if (row != NULL)
+ png_combine_row(png_ptr, row, 0/*row*/);
+ }
+
+ else
+#endif
+ {
+ if (row != NULL)
+ png_combine_row(png_ptr, row, -1/*ignored*/);
+
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row, -1/*ignored*/);
+ }
+ png_read_finish_row(png_ptr);
+
+ if (png_ptr->read_row_fn != NULL)
+ (*(png_ptr->read_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
+
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read one or more rows of image data. If the image is interlaced,
+ * and png_set_interlace_handling() has been called, the rows need to
+ * contain the contents of the rows from the previous pass. If the
+ * image has alpha or transparency, and png_handle_alpha()[*] has been
+ * called, the rows contents must be initialized to the contents of the
+ * screen.
+ *
+ * "row" holds the actual image, and pixels are placed in it
+ * as they arrive. If the image is displayed after each pass, it will
+ * appear to "sparkle" in. "display_row" can be used to display a
+ * "chunky" progressive image, with finer detail added as it becomes
+ * available. If you do not want this "chunky" display, you may pass
+ * NULL for display_row. If you do not want the sparkle display, and
+ * you have not called png_handle_alpha(), you may pass NULL for rows.
+ * If you have called png_handle_alpha(), and the image has either an
+ * alpha channel or a transparency chunk, you must provide a buffer for
+ * rows. In this case, you do not have to provide a display_row buffer
+ * also, but you may. If the image is not interlaced, or if you have
+ * not called png_set_interlace_handling(), the display_row buffer will
+ * be ignored, so pass NULL to it.
+ *
+ * [*] png_handle_alpha() does not exist yet, as of this version of libpng
+ */
+
+void PNGAPI
+png_read_rows(png_structrp png_ptr, png_bytepp row,
+ png_bytepp display_row, png_uint_32 num_rows)
+{
+ png_uint_32 i;
+ png_bytepp rp;
+ png_bytepp dp;
+
+ png_debug(1, "in png_read_rows");
+
+ if (png_ptr == NULL)
+ return;
+
+ rp = row;
+ dp = display_row;
+ if (rp != NULL && dp != NULL)
+ for (i = 0; i < num_rows; i++)
+ {
+ png_bytep rptr = *rp++;
+ png_bytep dptr = *dp++;
+
+ png_read_row(png_ptr, rptr, dptr);
+ }
+
+ else if (rp != NULL)
+ for (i = 0; i < num_rows; i++)
+ {
+ png_bytep rptr = *rp;
+ png_read_row(png_ptr, rptr, NULL);
+ rp++;
+ }
+
+ else if (dp != NULL)
+ for (i = 0; i < num_rows; i++)
+ {
+ png_bytep dptr = *dp;
+ png_read_row(png_ptr, NULL, dptr);
+ dp++;
+ }
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the entire image. If the image has an alpha channel or a tRNS
+ * chunk, and you have called png_handle_alpha()[*], you will need to
+ * initialize the image to the current image that PNG will be overlaying.
+ * We set the num_rows again here, in case it was incorrectly set in
+ * png_read_start_row() by a call to png_read_update_info() or
+ * png_start_read_image() if png_set_interlace_handling() wasn't called
+ * prior to either of these functions like it should have been. You can
+ * only call this function once. If you desire to have an image for
+ * each pass of a interlaced image, use png_read_rows() instead.
+ *
+ * [*] png_handle_alpha() does not exist yet, as of this version of libpng
+ */
+void PNGAPI
+png_read_image(png_structrp png_ptr, png_bytepp image)
+{
+ png_uint_32 i, image_height;
+ int pass, j;
+ png_bytepp rp;
+
+ png_debug(1, "in png_read_image");
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ {
+ pass = png_set_interlace_handling(png_ptr);
+ /* And make sure transforms are initialized. */
+ png_start_read_image(png_ptr);
+ }
+ else
+ {
+ if (png_ptr->interlaced && !(png_ptr->transformations & PNG_INTERLACE))
+ {
+ /* Caller called png_start_read_image or png_read_update_info without
+ * first turning on the PNG_INTERLACE transform. We can fix this here,
+ * but the caller should do it!
+ */
+ png_warning(png_ptr, "Interlace handling should be turned on when "
+ "using png_read_image");
+ /* Make sure this is set correctly */
+ png_ptr->num_rows = png_ptr->height;
+ }
+
+ /* Obtain the pass number, which also turns on the PNG_INTERLACE flag in
+ * the above error case.
+ */
+ pass = png_set_interlace_handling(png_ptr);
+ }
+#else
+ if (png_ptr->interlaced)
+ png_error(png_ptr,
+ "Cannot read interlaced image -- interlace handler disabled");
+
+ pass = 1;
+#endif
+
+ image_height=png_ptr->height;
+
+ for (j = 0; j < pass; j++)
+ {
+ rp = image;
+ for (i = 0; i < image_height; i++)
+ {
+ png_read_row(png_ptr, *rp, NULL);
+ rp++;
+ }
+ }
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the end of the PNG file. Will not read past the end of the
+ * file, will verify the end is accurate, and will read any comments
+ * or time information at the end of the file, if info is not NULL.
+ */
+void PNGAPI
+png_read_end(png_structrp png_ptr, png_inforp info_ptr)
+{
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ int keep;
+#endif
+
+ png_debug(1, "in png_read_end");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* If png_read_end is called in the middle of reading the rows there may
+ * still be pending IDAT data and an owned zstream. Deal with this here.
+ */
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ if (!png_chunk_unknown_handling(png_ptr, png_IDAT))
+#endif
+ png_read_finish_IDAT(png_ptr);
+
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ /* Report invalid palette index; added at libng-1.5.10 */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ png_ptr->num_palette_max > png_ptr->num_palette)
+ png_benign_error(png_ptr, "Read palette index exceeding num_palette");
+#endif
+
+ do
+ {
+ png_uint_32 length = png_read_chunk_header(png_ptr);
+ png_uint_32 chunk_name = png_ptr->chunk_name;
+
+ if (chunk_name == png_IHDR)
+ png_handle_IHDR(png_ptr, info_ptr, length);
+
+ else if (chunk_name == png_IEND)
+ png_handle_IEND(png_ptr, info_ptr, length);
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0)
+ {
+ if (chunk_name == png_IDAT)
+ {
+ if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
+ png_benign_error(png_ptr, "Too many IDATs found");
+ }
+ png_handle_unknown(png_ptr, info_ptr, length, keep);
+ if (chunk_name == png_PLTE)
+ png_ptr->mode |= PNG_HAVE_PLTE;
+ }
+#endif
+
+ else if (chunk_name == png_IDAT)
+ {
+ /* Zero length IDATs are legal after the last IDAT has been
+ * read, but not after other chunks have been read.
+ */
+ if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
+ png_benign_error(png_ptr, "Too many IDATs found");
+
+ png_crc_finish(png_ptr, length);
+ }
+ else if (chunk_name == png_PLTE)
+ png_handle_PLTE(png_ptr, info_ptr, length);
+
+#ifdef PNG_READ_bKGD_SUPPORTED
+ else if (chunk_name == png_bKGD)
+ png_handle_bKGD(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_cHRM_SUPPORTED
+ else if (chunk_name == png_cHRM)
+ png_handle_cHRM(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_gAMA_SUPPORTED
+ else if (chunk_name == png_gAMA)
+ png_handle_gAMA(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_hIST_SUPPORTED
+ else if (chunk_name == png_hIST)
+ png_handle_hIST(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_oFFs_SUPPORTED
+ else if (chunk_name == png_oFFs)
+ png_handle_oFFs(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_pCAL_SUPPORTED
+ else if (chunk_name == png_pCAL)
+ png_handle_pCAL(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_sCAL_SUPPORTED
+ else if (chunk_name == png_sCAL)
+ png_handle_sCAL(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_pHYs_SUPPORTED
+ else if (chunk_name == png_pHYs)
+ png_handle_pHYs(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_sBIT_SUPPORTED
+ else if (chunk_name == png_sBIT)
+ png_handle_sBIT(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+ else if (chunk_name == png_sRGB)
+ png_handle_sRGB(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_iCCP_SUPPORTED
+ else if (chunk_name == png_iCCP)
+ png_handle_iCCP(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_sPLT_SUPPORTED
+ else if (chunk_name == png_sPLT)
+ png_handle_sPLT(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_tEXt_SUPPORTED
+ else if (chunk_name == png_tEXt)
+ png_handle_tEXt(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_tIME_SUPPORTED
+ else if (chunk_name == png_tIME)
+ png_handle_tIME(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_tRNS_SUPPORTED
+ else if (chunk_name == png_tRNS)
+ png_handle_tRNS(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_zTXt_SUPPORTED
+ else if (chunk_name == png_zTXt)
+ png_handle_zTXt(png_ptr, info_ptr, length);
+#endif
+
+#ifdef PNG_READ_iTXt_SUPPORTED
+ else if (chunk_name == png_iTXt)
+ png_handle_iTXt(png_ptr, info_ptr, length);
+#endif
+
+ else
+ png_handle_unknown(png_ptr, info_ptr, length,
+ PNG_HANDLE_CHUNK_AS_DEFAULT);
+ } while (!(png_ptr->mode & PNG_HAVE_IEND));
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+/* Free all memory used in the read struct */
+static void
+png_read_destroy(png_structrp png_ptr)
+{
+ png_debug(1, "in png_read_destroy");
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ png_destroy_gamma_table(png_ptr);
+#endif
+
+ png_free(png_ptr, png_ptr->big_row_buf);
+ png_free(png_ptr, png_ptr->big_prev_row);
+ png_free(png_ptr, png_ptr->read_buffer);
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+ png_free(png_ptr, png_ptr->palette_lookup);
+ png_free(png_ptr, png_ptr->quantize_index);
+#endif
+
+ if (png_ptr->free_me & PNG_FREE_PLTE)
+ png_zfree(png_ptr, png_ptr->palette);
+ png_ptr->free_me &= ~PNG_FREE_PLTE;
+
+#if defined(PNG_tRNS_SUPPORTED) || \
+ defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ if (png_ptr->free_me & PNG_FREE_TRNS)
+ png_free(png_ptr, png_ptr->trans_alpha);
+ png_ptr->free_me &= ~PNG_FREE_TRNS;
+#endif
+
+ inflateEnd(&png_ptr->zstream);
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+ png_free(png_ptr, png_ptr->save_buffer);
+#endif
+
+#if defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED) &&\
+ defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+ png_free(png_ptr, png_ptr->unknown_chunk.data);
+#endif
+
+#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+ png_free(png_ptr, png_ptr->chunk_list);
+#endif
+
+ /* NOTE: the 'setjmp' buffer may still be allocated and the memory and error
+ * callbacks are still set at this point. They are required to complete the
+ * destruction of the png_struct itself.
+ */
+}
+
+/* Free all memory used by the read */
+void PNGAPI
+png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
+ png_infopp end_info_ptr_ptr)
+{
+ png_structrp png_ptr = NULL;
+
+ png_debug(1, "in png_destroy_read_struct");
+
+ if (png_ptr_ptr != NULL)
+ png_ptr = *png_ptr_ptr;
+
+ if (png_ptr == NULL)
+ return;
+
+ /* libpng 1.6.0: use the API to destroy info structs to ensure consistent
+ * behavior. Prior to 1.6.0 libpng did extra 'info' destruction in this API.
+ * The extra was, apparently, unnecessary yet this hides memory leak bugs.
+ */
+ png_destroy_info_struct(png_ptr, end_info_ptr_ptr);
+ png_destroy_info_struct(png_ptr, info_ptr_ptr);
+
+ *png_ptr_ptr = NULL;
+ png_read_destroy(png_ptr);
+ png_destroy_png_struct(png_ptr);
+}
+
+void PNGAPI
+png_set_read_status_fn(png_structrp png_ptr, png_read_status_ptr read_row_fn)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->read_row_fn = read_row_fn;
+}
+
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+void PNGAPI
+png_read_png(png_structrp png_ptr, png_inforp info_ptr,
+ int transforms,
+ voidp params)
+{
+ int row;
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ /* png_read_info() gives us all of the information from the
+ * PNG file before the first IDAT (image data chunk).
+ */
+ png_read_info(png_ptr, info_ptr);
+ if (info_ptr->height > PNG_UINT_32_MAX/(sizeof (png_bytep)))
+ png_error(png_ptr, "Image is too high to process with png_read_png()");
+
+ /* -------------- image transformations start here ------------------- */
+
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ /* Tell libpng to strip 16-bit/color files down to 8 bits per color.
+ */
+ if (transforms & PNG_TRANSFORM_SCALE_16)
+ {
+ /* Added at libpng-1.5.4. "strip_16" produces the same result that it
+ * did in earlier versions, while "scale_16" is now more accurate.
+ */
+ png_set_scale_16(png_ptr);
+ }
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+ /* If both SCALE and STRIP are required pngrtran will effectively cancel the
+ * latter by doing SCALE first. This is ok and allows apps not to check for
+ * which is supported to get the right answer.
+ */
+ if (transforms & PNG_TRANSFORM_STRIP_16)
+ png_set_strip_16(png_ptr);
+#endif
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ /* Strip alpha bytes from the input data without combining with
+ * the background (not recommended).
+ */
+ if (transforms & PNG_TRANSFORM_STRIP_ALPHA)
+ png_set_strip_alpha(png_ptr);
+#endif
+
+#if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED)
+ /* Extract multiple pixels with bit depths of 1, 2, or 4 from a single
+ * byte into separate bytes (useful for paletted and grayscale images).
+ */
+ if (transforms & PNG_TRANSFORM_PACKING)
+ png_set_packing(png_ptr);
+#endif
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ /* Change the order of packed pixels to least significant bit first
+ * (not useful if you are using png_set_packing).
+ */
+ if (transforms & PNG_TRANSFORM_PACKSWAP)
+ png_set_packswap(png_ptr);
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ /* Expand paletted colors into true RGB triplets
+ * Expand grayscale images to full 8 bits from 1, 2, or 4 bits/pixel
+ * Expand paletted or RGB images with transparency to full alpha
+ * channels so the data will be available as RGBA quartets.
+ */
+ if (transforms & PNG_TRANSFORM_EXPAND)
+ if ((png_ptr->bit_depth < 8) ||
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ||
+ (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
+ png_set_expand(png_ptr);
+#endif
+
+ /* We don't handle background color or gamma transformation or quantizing.
+ */
+
+#ifdef PNG_READ_INVERT_SUPPORTED
+ /* Invert monochrome files to have 0 as white and 1 as black
+ */
+ if (transforms & PNG_TRANSFORM_INVERT_MONO)
+ png_set_invert_mono(png_ptr);
+#endif
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+ /* If you want to shift the pixel values from the range [0,255] or
+ * [0,65535] to the original [0,7] or [0,31], or whatever range the
+ * colors were originally in:
+ */
+ if ((transforms & PNG_TRANSFORM_SHIFT)
+ && png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
+ {
+ png_color_8p sig_bit;
+
+ png_get_sBIT(png_ptr, info_ptr, &sig_bit);
+ png_set_shift(png_ptr, sig_bit);
+ }
+#endif
+
+#ifdef PNG_READ_BGR_SUPPORTED
+ /* Flip the RGB pixels to BGR (or RGBA to BGRA) */
+ if (transforms & PNG_TRANSFORM_BGR)
+ png_set_bgr(png_ptr);
+#endif
+
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
+ /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
+ if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
+ png_set_swap_alpha(png_ptr);
+#endif
+
+#ifdef PNG_READ_SWAP_SUPPORTED
+ /* Swap bytes of 16-bit files to least significant byte first */
+ if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
+ png_set_swap(png_ptr);
+#endif
+
+/* Added at libpng-1.2.41 */
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+ /* Invert the alpha channel from opacity to transparency */
+ if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
+ png_set_invert_alpha(png_ptr);
+#endif
+
+/* Added at libpng-1.2.41 */
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ /* Expand grayscale image to RGB */
+ if (transforms & PNG_TRANSFORM_GRAY_TO_RGB)
+ png_set_gray_to_rgb(png_ptr);
+#endif
+
+/* Added at libpng-1.5.4 */
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+ if (transforms & PNG_TRANSFORM_EXPAND_16)
+ png_set_expand_16(png_ptr);
+#endif
+
+ /* We don't handle adding filler bytes */
+
+ /* We use png_read_image and rely on that for interlace handling, but we also
+ * call png_read_update_info therefore must turn on interlace handling now:
+ */
+ (void)png_set_interlace_handling(png_ptr);
+
+ /* Optional call to gamma correct and add the background to the palette
+ * and update info structure. REQUIRED if you are expecting libpng to
+ * update the palette for you (i.e., you selected such a transform above).
+ */
+ png_read_update_info(png_ptr, info_ptr);
+
+ /* -------------- image transformations end here ------------------- */
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
+ if (info_ptr->row_pointers == NULL)
+ {
+ png_uint_32 iptr;
+
+ info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
+ info_ptr->height * (sizeof (png_bytep)));
+ for (iptr=0; iptr<info_ptr->height; iptr++)
+ info_ptr->row_pointers[iptr] = NULL;
+
+ info_ptr->free_me |= PNG_FREE_ROWS;
+
+ for (row = 0; row < (int)info_ptr->height; row++)
+ info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr,
+ png_get_rowbytes(png_ptr, info_ptr));
+ }
+
+ png_read_image(png_ptr, info_ptr->row_pointers);
+ info_ptr->valid |= PNG_INFO_IDAT;
+
+ /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
+ png_read_end(png_ptr, info_ptr);
+
+ PNG_UNUSED(transforms) /* Quiet compiler warnings */
+ PNG_UNUSED(params)
+
+}
+#endif /* PNG_INFO_IMAGE_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
+/* SIMPLIFIED READ
+ *
+ * This code currently relies on the sequential reader, though it could easily
+ * be made to work with the progressive one.
+ */
+/* Arguments to png_image_finish_read: */
+
+/* Encoding of PNG data (used by the color-map code) */
+/* TODO: change these, dang, ANSI-C reserves the 'E' namespace. */
+# define E_NOTSET 0 /* File encoding not yet known */
+# define E_sRGB 1 /* 8-bit encoded to sRGB gamma */
+# define E_LINEAR 2 /* 16-bit linear: not encoded, NOT pre-multiplied! */
+# define E_FILE 3 /* 8-bit encoded to file gamma, not sRGB or linear */
+# define E_LINEAR8 4 /* 8-bit linear: only from a file value */
+
+/* Color-map processing: after libpng has run on the PNG image further
+ * processing may be needed to conver the data to color-map indicies.
+ */
+#define PNG_CMAP_NONE 0
+#define PNG_CMAP_GA 1 /* Process GA data to a color-map with alpha */
+#define PNG_CMAP_TRANS 2 /* Process GA data to a background index */
+#define PNG_CMAP_RGB 3 /* Process RGB data */
+#define PNG_CMAP_RGB_ALPHA 4 /* Process RGBA data */
+
+/* The following document where the background is for each processing case. */
+#define PNG_CMAP_NONE_BACKGROUND 256
+#define PNG_CMAP_GA_BACKGROUND 231
+#define PNG_CMAP_TRANS_BACKGROUND 254
+#define PNG_CMAP_RGB_BACKGROUND 256
+#define PNG_CMAP_RGB_ALPHA_BACKGROUND 216
+
+typedef struct
+{
+ /* Arguments: */
+ png_imagep image;
+ png_voidp buffer;
+ png_int_32 row_stride;
+ png_voidp colormap;
+ png_const_colorp background;
+ /* Local variables: */
+ png_voidp local_row;
+ png_voidp first_row;
+ ptrdiff_t row_bytes; /* step between rows */
+ int file_encoding; /* E_ values above */
+ png_fixed_point gamma_to_linear; /* For E_FILE, reciprocal of gamma */
+ int colormap_processing; /* PNG_CMAP_ values above */
+} png_image_read_control;
+
+/* Do all the *safe* initialization - 'safe' means that png_error won't be
+ * called, so setting up the jmp_buf is not required. This means that anything
+ * called from here must *not* call png_malloc - it has to call png_malloc_warn
+ * instead so that control is returned safely back to this routine.
+ */
+static int
+png_image_read_init(png_imagep image)
+{
+ if (image->opaque == NULL)
+ {
+ png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, image,
+ png_safe_error, png_safe_warning);
+
+ /* And set the rest of the structure to NULL to ensure that the various
+ * fields are consistent.
+ */
+ memset(image, 0, (sizeof *image));
+ image->version = PNG_IMAGE_VERSION;
+
+ if (png_ptr != NULL)
+ {
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+
+ if (info_ptr != NULL)
+ {
+ png_controlp control = png_voidcast(png_controlp,
+ png_malloc_warn(png_ptr, (sizeof *control)));
+
+ if (control != NULL)
+ {
+ memset(control, 0, (sizeof *control));
+
+ control->png_ptr = png_ptr;
+ control->info_ptr = info_ptr;
+ control->for_write = 0;
+
+ image->opaque = control;
+ return 1;
+ }
+
+ /* Error clean up */
+ png_destroy_info_struct(png_ptr, &info_ptr);
+ }
+
+ png_destroy_read_struct(&png_ptr, NULL, NULL);
+ }
+
+ return png_image_error(image, "png_image_read: out of memory");
+ }
+
+ return png_image_error(image, "png_image_read: opaque pointer not NULL");
+}
+
+/* Utility to find the base format of a PNG file from a png_struct. */
+static png_uint_32
+png_image_format(png_structrp png_ptr)
+{
+ png_uint_32 format = 0;
+
+ if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ format |= PNG_FORMAT_FLAG_COLOR;
+
+ if (png_ptr->color_type & PNG_COLOR_MASK_ALPHA)
+ format |= PNG_FORMAT_FLAG_ALPHA;
+
+ /* Use png_ptr here, not info_ptr, because by examination png_handle_tRNS
+ * sets the png_struct fields; that's all we are interested in here. The
+ * precise interaction with an app call to png_set_tRNS and PNG file reading
+ * is unclear.
+ */
+ else if (png_ptr->num_trans > 0)
+ format |= PNG_FORMAT_FLAG_ALPHA;
+
+ if (png_ptr->bit_depth == 16)
+ format |= PNG_FORMAT_FLAG_LINEAR;
+
+ if (png_ptr->color_type & PNG_COLOR_MASK_PALETTE)
+ format |= PNG_FORMAT_FLAG_COLORMAP;
+
+ return format;
+}
+
+/* Is the given gamma significantly different from sRGB? The test is the same
+ * one used in pngrtran.c when deciding whether to do gamma correction. The
+ * arithmetic optimizes the division by using the fact that the inverse of the
+ * file sRGB gamma is 2.2
+ */
+static int
+png_gamma_not_sRGB(png_fixed_point g)
+{
+ if (g < PNG_FP_1)
+ {
+ /* An uninitialized gamma is assumed to be sRGB for the simplified API. */
+ if (g == 0)
+ return 0;
+
+ return png_gamma_significant((g * 11 + 2)/5 /* i.e. *2.2, rounded */);
+ }
+
+ return 1;
+}
+
+/* Do the main body of a 'png_image_begin_read' function; read the PNG file
+ * header and fill in all the information. This is executed in a safe context,
+ * unlike the init routine above.
+ */
+static int
+png_image_read_header(png_voidp argument)
+{
+ png_imagep image = png_voidcast(png_imagep, argument);
+ png_structrp png_ptr = image->opaque->png_ptr;
+ png_inforp info_ptr = image->opaque->info_ptr;
+
+ png_set_benign_errors(png_ptr, 1/*warn*/);
+ png_read_info(png_ptr, info_ptr);
+
+ /* Do this the fast way; just read directly out of png_struct. */
+ image->width = png_ptr->width;
+ image->height = png_ptr->height;
+
+ {
+ png_uint_32 format = png_image_format(png_ptr);
+
+ image->format = format;
+
+#ifdef PNG_COLORSPACE_SUPPORTED
+ /* Does the colorspace match sRGB? If there is no color endpoint
+ * (colorant) information assume yes, otherwise require the
+ * 'ENDPOINTS_MATCHE_sRGB' colorspace flag to have been set. If the
+ * colorspace has been determined to be invalid ignore it.
+ */
+ if ((format & PNG_FORMAT_FLAG_COLOR) != 0 && ((png_ptr->colorspace.flags
+ & (PNG_COLORSPACE_HAVE_ENDPOINTS|PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB|
+ PNG_COLORSPACE_INVALID)) == PNG_COLORSPACE_HAVE_ENDPOINTS))
+ image->flags |= PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB;
+#endif
+ }
+
+ /* We need the maximum number of entries regardless of the format the
+ * application sets here.
+ */
+ {
+ png_uint_32 cmap_entries;
+
+ switch (png_ptr->color_type)
+ {
+ case PNG_COLOR_TYPE_GRAY:
+ cmap_entries = 1U << png_ptr->bit_depth;
+ break;
+
+ case PNG_COLOR_TYPE_PALETTE:
+ cmap_entries = png_ptr->num_palette;
+ break;
+
+ default:
+ cmap_entries = 256;
+ break;
+ }
+
+ if (cmap_entries > 256)
+ cmap_entries = 256;
+
+ image->colormap_entries = cmap_entries;
+ }
+
+ return 1;
+}
+
+#ifdef PNG_STDIO_SUPPORTED
+int PNGAPI
+png_image_begin_read_from_stdio(png_imagep image, FILE* file)
+{
+ if (image != NULL && image->version == PNG_IMAGE_VERSION)
+ {
+ if (file != NULL)
+ {
+ if (png_image_read_init(image))
+ {
+ /* This is slightly evil, but png_init_io doesn't do anything other
+ * than this and we haven't changed the standard IO functions so
+ * this saves a 'safe' function.
+ */
+ image->opaque->png_ptr->io_ptr = file;
+ return png_safe_execute(image, png_image_read_header, image);
+ }
+ }
+
+ else
+ return png_image_error(image,
+ "png_image_begin_read_from_stdio: invalid argument");
+ }
+
+ else if (image != NULL)
+ return png_image_error(image,
+ "png_image_begin_read_from_stdio: incorrect PNG_IMAGE_VERSION");
+
+ return 0;
+}
+
+int PNGAPI
+png_image_begin_read_from_file(png_imagep image, const char *file_name)
+{
+ if (image != NULL && image->version == PNG_IMAGE_VERSION)
+ {
+ if (file_name != NULL)
+ {
+ FILE *fp = fopen(file_name, "rb");
+
+ if (fp != NULL)
+ {
+ if (png_image_read_init(image))
+ {
+ image->opaque->png_ptr->io_ptr = fp;
+ image->opaque->owned_file = 1;
+ return png_safe_execute(image, png_image_read_header, image);
+ }
+
+ /* Clean up: just the opened file. */
+ (void)fclose(fp);
+ }
+
+ else
+ return png_image_error(image, strerror(errno));
+ }
+
+ else
+ return png_image_error(image,
+ "png_image_begin_read_from_file: invalid argument");
+ }
+
+ else if (image != NULL)
+ return png_image_error(image,
+ "png_image_begin_read_from_file: incorrect PNG_IMAGE_VERSION");
+
+ return 0;
+}
+#endif /* PNG_STDIO_SUPPORTED */
+
+static void PNGCBAPI
+png_image_memory_read(png_structp png_ptr, png_bytep out, png_size_t need)
+{
+ if (png_ptr != NULL)
+ {
+ png_imagep image = png_voidcast(png_imagep, png_ptr->io_ptr);
+ if (image != NULL)
+ {
+ png_controlp cp = image->opaque;
+ if (cp != NULL)
+ {
+ png_const_bytep memory = cp->memory;
+ png_size_t size = cp->size;
+
+ if (memory != NULL && size >= need)
+ {
+ memcpy(out, memory, need);
+ cp->memory = memory + need;
+ cp->size = size - need;
+ return;
+ }
+
+ png_error(png_ptr, "read beyond end of data");
+ }
+ }
+
+ png_error(png_ptr, "invalid memory read");
+ }
+}
+
+int PNGAPI png_image_begin_read_from_memory(png_imagep image,
+ png_const_voidp memory, png_size_t size)
+{
+ if (image != NULL && image->version == PNG_IMAGE_VERSION)
+ {
+ if (memory != NULL && size > 0)
+ {
+ if (png_image_read_init(image))
+ {
+ /* Now set the IO functions to read from the memory buffer and
+ * store it into io_ptr. Again do this in-place to avoid calling a
+ * libpng function that requires error handling.
+ */
+ image->opaque->memory = png_voidcast(png_const_bytep, memory);
+ image->opaque->size = size;
+ image->opaque->png_ptr->io_ptr = image;
+ image->opaque->png_ptr->read_data_fn = png_image_memory_read;
+
+ return png_safe_execute(image, png_image_read_header, image);
+ }
+ }
+
+ else
+ return png_image_error(image,
+ "png_image_begin_read_from_memory: invalid argument");
+ }
+
+ else if (image != NULL)
+ return png_image_error(image,
+ "png_image_begin_read_from_memory: incorrect PNG_IMAGE_VERSION");
+
+ return 0;
+}
+
+/* Utility function to skip chunks that are not used by the simplified image
+ * read functions and an appropriate macro to call it.
+ */
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+static void
+png_image_skip_unused_chunks(png_structrp png_ptr)
+{
+ /* Prepare the reader to ignore all recognized chunks whose data will not
+ * be used, i.e., all chunks recognized by libpng except for those
+ * involved in basic image reading:
+ *
+ * IHDR, PLTE, IDAT, IEND
+ *
+ * Or image data handling:
+ *
+ * tRNS, bKGD, gAMA, cHRM, sRGB, iCCP and sBIT.
+ *
+ * This provides a small performance improvement and eliminates any
+ * potential vulnerability to security problems in the unused chunks.
+ */
+ {
+ static PNG_CONST png_byte chunks_to_process[] = {
+ 98, 75, 71, 68, '\0', /* bKGD */
+ 99, 72, 82, 77, '\0', /* cHRM */
+ 103, 65, 77, 65, '\0', /* gAMA */
+ 105, 67, 67, 80, '\0', /* iCCP */
+ 115, 66, 73, 84, '\0', /* sBIT */
+ 115, 82, 71, 66, '\0', /* sRGB */
+ };
+
+ /* Ignore unknown chunks and all other chunks except for the
+ * IHDR, PLTE, tRNS, IDAT, and IEND chunks.
+ */
+ png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_NEVER,
+ NULL, -1);
+
+ /* But do not ignore image data handling chunks */
+ png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_AS_DEFAULT,
+ chunks_to_process, (sizeof chunks_to_process)/5);
+ }
+}
+
+# define PNG_SKIP_CHUNKS(p) png_image_skip_unused_chunks(p)
+#else
+# define PNG_SKIP_CHUNKS(p) ((void)0)
+#endif /* PNG_HANDLE_AS_UNKNOWN_SUPPORTED */
+
+/* The following macro gives the exact rounded answer for all values in the
+ * range 0..255 (it actually divides by 51.2, but the rounding still generates
+ * the correct numbers 0..5
+ */
+#define PNG_DIV51(v8) (((v8) * 5 + 130) >> 8)
+
+/* Utility functions to make particular color-maps */
+static void
+set_file_encoding(png_image_read_control *display)
+{
+ png_fixed_point g = display->image->opaque->png_ptr->colorspace.gamma;
+ if (png_gamma_significant(g))
+ {
+ if (png_gamma_not_sRGB(g))
+ {
+ display->file_encoding = E_FILE;
+ display->gamma_to_linear = png_reciprocal(g);
+ }
+
+ else
+ display->file_encoding = E_sRGB;
+ }
+
+ else
+ display->file_encoding = E_LINEAR8;
+}
+
+static unsigned int
+decode_gamma(png_image_read_control *display, png_uint_32 value, int encoding)
+{
+ if (encoding == E_FILE) /* double check */
+ encoding = display->file_encoding;
+
+ if (encoding == E_NOTSET) /* must be the file encoding */
+ {
+ set_file_encoding(display);
+ encoding = display->file_encoding;
+ }
+
+ switch (encoding)
+ {
+ case E_FILE:
+ value = png_gamma_16bit_correct(value*257, display->gamma_to_linear);
+ break;
+
+ case E_sRGB:
+ value = png_sRGB_table[value];
+ break;
+
+ case E_LINEAR:
+ break;
+
+ case E_LINEAR8:
+ value *= 257;
+ break;
+
+ default:
+ png_error(display->image->opaque->png_ptr,
+ "unexpected encoding (internal error)");
+ break;
+ }
+
+ return value;
+}
+
+static png_uint_32
+png_colormap_compose(png_image_read_control *display,
+ png_uint_32 foreground, int foreground_encoding, png_uint_32 alpha,
+ png_uint_32 background, int encoding)
+{
+ /* The file value is composed on the background, the background has the given
+ * encoding and so does the result, the file is encoded with E_FILE and the
+ * file and alpha are 8-bit values. The (output) encoding will always be
+ * E_LINEAR or E_sRGB.
+ */
+ png_uint_32 f = decode_gamma(display, foreground, foreground_encoding);
+ png_uint_32 b = decode_gamma(display, background, encoding);
+
+ /* The alpha is always an 8-bit value (it comes from the palette), the value
+ * scaled by 255 is what PNG_sRGB_FROM_LINEAR requires.
+ */
+ f = f * alpha + b * (255-alpha);
+
+ if (encoding == E_LINEAR)
+ {
+ /* Scale to 65535; divide by 255, approximately (in fact this is extremely
+ * accurate, it divides by 255.00000005937181414556, with no overflow.)
+ */
+ f *= 257; /* Now scaled by 65535 */
+ f += f >> 16;
+ f = (f+32768) >> 16;
+ }
+
+ else /* E_sRGB */
+ f = PNG_sRGB_FROM_LINEAR(f);
+
+ return f;
+}
+
+/* NOTE: E_LINEAR values to this routine must be 16-bit, but E_FILE values must
+ * be 8-bit.
+ */
+static void
+png_create_colormap_entry(png_image_read_control *display,
+ png_uint_32 ip, png_uint_32 red, png_uint_32 green, png_uint_32 blue,
+ png_uint_32 alpha, int encoding)
+{
+ png_imagep image = display->image;
+ const int output_encoding = (image->format & PNG_FORMAT_FLAG_LINEAR) ?
+ E_LINEAR : E_sRGB;
+ const int convert_to_Y = (image->format & PNG_FORMAT_FLAG_COLOR) == 0 &&
+ (red != green || green != blue);
+
+ if (ip > 255)
+ png_error(image->opaque->png_ptr, "color-map index out of range");
+
+ /* Update the cache with whether the file gamma is significantly different
+ * from sRGB.
+ */
+ if (encoding == E_FILE)
+ {
+ if (display->file_encoding == E_NOTSET)
+ set_file_encoding(display);
+
+ /* Note that the cached value may be E_FILE too, but if it is then the
+ * gamma_to_linear member has been set.
+ */
+ encoding = display->file_encoding;
+ }
+
+ if (encoding == E_FILE)
+ {
+ png_fixed_point g = display->gamma_to_linear;
+
+ red = png_gamma_16bit_correct(red*257, g);
+ green = png_gamma_16bit_correct(green*257, g);
+ blue = png_gamma_16bit_correct(blue*257, g);
+
+ if (convert_to_Y || output_encoding == E_LINEAR)
+ {
+ alpha *= 257;
+ encoding = E_LINEAR;
+ }
+
+ else
+ {
+ red = PNG_sRGB_FROM_LINEAR(red * 255);
+ green = PNG_sRGB_FROM_LINEAR(green * 255);
+ blue = PNG_sRGB_FROM_LINEAR(blue * 255);
+ encoding = E_sRGB;
+ }
+ }
+
+ else if (encoding == E_LINEAR8)
+ {
+ /* This encoding occurs quite frequently in test cases because PngSuite
+ * includes a gAMA 1.0 chunk with most images.
+ */
+ red *= 257;
+ green *= 257;
+ blue *= 257;
+ alpha *= 257;
+ encoding = E_LINEAR;
+ }
+
+ else if (encoding == E_sRGB && (convert_to_Y || output_encoding == E_LINEAR))
+ {
+ /* The values are 8-bit sRGB values, but must be converted to 16-bit
+ * linear.
+ */
+ red = png_sRGB_table[red];
+ green = png_sRGB_table[green];
+ blue = png_sRGB_table[blue];
+ alpha *= 257;
+ encoding = E_LINEAR;
+ }
+
+ /* This is set if the color isn't gray but the output is. */
+ if (encoding == E_LINEAR)
+ {
+ if (convert_to_Y)
+ {
+ /* NOTE: these values are copied from png_do_rgb_to_gray */
+ png_uint_32 y = (png_uint_32)6968 * red + (png_uint_32)23434 * green +
+ (png_uint_32)2366 * blue;
+
+ if (output_encoding == E_LINEAR)
+ y = (y + 16384) >> 15;
+
+ else
+ {
+ /* y is scaled by 32768, we need it scaled by 255: */
+ y = (y + 128) >> 8;
+ y *= 255;
+ y = PNG_sRGB_FROM_LINEAR((y + 64) >> 7);
+ encoding = E_sRGB;
+ }
+
+ blue = red = green = y;
+ }
+
+ else if (output_encoding == E_sRGB)
+ {
+ red = PNG_sRGB_FROM_LINEAR(red * 255);
+ green = PNG_sRGB_FROM_LINEAR(green * 255);
+ blue = PNG_sRGB_FROM_LINEAR(blue * 255);
+ alpha = PNG_DIV257(alpha);
+ encoding = E_sRGB;
+ }
+ }
+
+ if (encoding != output_encoding)
+ png_error(image->opaque->png_ptr, "bad encoding (internal error)");
+
+ /* Store the value. */
+ {
+# ifdef PNG_FORMAT_BGR_SUPPORTED
+ const int afirst = (image->format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
+ (image->format & PNG_FORMAT_FLAG_ALPHA) != 0;
+# else
+# define afirst 0
+# endif
+# ifdef PNG_FORMAT_BGR_SUPPORTED
+ const int bgr = (image->format & PNG_FORMAT_FLAG_BGR) ? 2 : 0;
+# else
+# define bgr 0
+# endif
+
+ if (output_encoding == E_LINEAR)
+ {
+ png_uint_16p entry = png_voidcast(png_uint_16p, display->colormap);
+
+ entry += ip * PNG_IMAGE_SAMPLE_CHANNELS(image->format);
+
+ /* The linear 16-bit values must be pre-multiplied by the alpha channel
+ * value, if less than 65535 (this is, effectively, composite on black
+ * if the alpha channel is removed.)
+ */
+ switch (PNG_IMAGE_SAMPLE_CHANNELS(image->format))
+ {
+ case 4:
+ entry[afirst ? 0 : 3] = (png_uint_16)alpha;
+ /* FALL THROUGH */
+
+ case 3:
+ if (alpha < 65535)
+ {
+ if (alpha > 0)
+ {
+ blue = (blue * alpha + 32767U)/65535U;
+ green = (green * alpha + 32767U)/65535U;
+ red = (red * alpha + 32767U)/65535U;
+ }
+
+ else
+ red = green = blue = 0;
+ }
+ entry[afirst + (2 ^ bgr)] = (png_uint_16)blue;
+ entry[afirst + 1] = (png_uint_16)green;
+ entry[afirst + bgr] = (png_uint_16)red;
+ break;
+
+ case 2:
+ entry[1 ^ afirst] = (png_uint_16)alpha;
+ /* FALL THROUGH */
+
+ case 1:
+ if (alpha < 65535)
+ {
+ if (alpha > 0)
+ green = (green * alpha + 32767U)/65535U;
+
+ else
+ green = 0;
+ }
+ entry[afirst] = (png_uint_16)green;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ else /* output encoding is E_sRGB */
+ {
+ png_bytep entry = png_voidcast(png_bytep, display->colormap);
+
+ entry += ip * PNG_IMAGE_SAMPLE_CHANNELS(image->format);
+
+ switch (PNG_IMAGE_SAMPLE_CHANNELS(image->format))
+ {
+ case 4:
+ entry[afirst ? 0 : 3] = (png_byte)alpha;
+ case 3:
+ entry[afirst + (2 ^ bgr)] = (png_byte)blue;
+ entry[afirst + 1] = (png_byte)green;
+ entry[afirst + bgr] = (png_byte)red;
+ break;
+
+ case 2:
+ entry[1 ^ afirst] = (png_byte)alpha;
+ case 1:
+ entry[afirst] = (png_byte)green;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+# ifdef afirst
+# undef afirst
+# endif
+# ifdef bgr
+# undef bgr
+# endif
+ }
+}
+
+static int
+make_gray_file_colormap(png_image_read_control *display)
+{
+ unsigned int i;
+
+ for (i=0; i<256; ++i)
+ png_create_colormap_entry(display, i, i, i, i, 255, E_FILE);
+
+ return i;
+}
+
+static int
+make_gray_colormap(png_image_read_control *display)
+{
+ unsigned int i;
+
+ for (i=0; i<256; ++i)
+ png_create_colormap_entry(display, i, i, i, i, 255, E_sRGB);
+
+ return i;
+}
+#define PNG_GRAY_COLORMAP_ENTRIES 256
+
+static int
+make_ga_colormap(png_image_read_control *display)
+{
+ unsigned int i, a;
+
+ /* Alpha is retained, the output will be a color-map with entries
+ * selected by six levels of alpha. One transparent entry, 6 gray
+ * levels for all the intermediate alpha values, leaving 230 entries
+ * for the opaque grays. The color-map entries are the six values
+ * [0..5]*51, the GA processing uses PNG_DIV51(value) to find the
+ * relevant entry.
+ *
+ * if (alpha > 229) // opaque
+ * {
+ * // The 231 entries are selected to make the math below work:
+ * base = 0;
+ * entry = (231 * gray + 128) >> 8;
+ * }
+ * else if (alpha < 26) // transparent
+ * {
+ * base = 231;
+ * entry = 0;
+ * }
+ * else // partially opaque
+ * {
+ * base = 226 + 6 * PNG_DIV51(alpha);
+ * entry = PNG_DIV51(gray);
+ * }
+ */
+ i = 0;
+ while (i < 231)
+ {
+ unsigned int gray = (i * 256 + 115) / 231;
+ png_create_colormap_entry(display, i++, gray, gray, gray, 255, E_sRGB);
+ }
+
+ /* 255 is used here for the component values for consistency with the code
+ * that undoes premultiplication in pngwrite.c.
+ */
+ png_create_colormap_entry(display, i++, 255, 255, 255, 0, E_sRGB);
+
+ for (a=1; a<5; ++a)
+ {
+ unsigned int g;
+
+ for (g=0; g<6; ++g)
+ png_create_colormap_entry(display, i++, g*51, g*51, g*51, a*51,
+ E_sRGB);
+ }
+
+ return i;
+}
+
+#define PNG_GA_COLORMAP_ENTRIES 256
+
+static int
+make_rgb_colormap(png_image_read_control *display)
+{
+ unsigned int i, r;
+
+ /* Build a 6x6x6 opaque RGB cube */
+ for (i=r=0; r<6; ++r)
+ {
+ unsigned int g;
+
+ for (g=0; g<6; ++g)
+ {
+ unsigned int b;
+
+ for (b=0; b<6; ++b)
+ png_create_colormap_entry(display, i++, r*51, g*51, b*51, 255,
+ E_sRGB);
+ }
+ }
+
+ return i;
+}
+
+#define PNG_RGB_COLORMAP_ENTRIES 216
+
+/* Return a palette index to the above palette given three 8-bit sRGB values. */
+#define PNG_RGB_INDEX(r,g,b) \
+ ((png_byte)(6 * (6 * PNG_DIV51(r) + PNG_DIV51(g)) + PNG_DIV51(b)))
+
+static int
+png_image_read_colormap(png_voidp argument)
+{
+ png_image_read_control *display =
+ png_voidcast(png_image_read_control*, argument);
+ const png_imagep image = display->image;
+
+ const png_structrp png_ptr = image->opaque->png_ptr;
+ const png_uint_32 output_format = image->format;
+ const int output_encoding = (output_format & PNG_FORMAT_FLAG_LINEAR) ?
+ E_LINEAR : E_sRGB;
+
+ unsigned int cmap_entries;
+ unsigned int output_processing; /* Output processing option */
+ unsigned int data_encoding = E_NOTSET; /* Encoding libpng must produce */
+
+ /* Background information; the background color and the index of this color
+ * in the color-map if it exists (else 256).
+ */
+ unsigned int background_index = 256;
+ png_uint_32 back_r, back_g, back_b;
+
+ /* Flags to accumulate things that need to be done to the input. */
+ int expand_tRNS = 0;
+
+ /* Exclude the NYI feature of compositing onto a color-mapped buffer; it is
+ * very difficult to do, the results look awful, and it is difficult to see
+ * what possible use it is because the application can't control the
+ * color-map.
+ */
+ if (((png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0 ||
+ png_ptr->num_trans > 0) /* alpha in input */ &&
+ ((output_format & PNG_FORMAT_FLAG_ALPHA) == 0) /* no alpha in output */)
+ {
+ if (output_encoding == E_LINEAR) /* compose on black */
+ back_b = back_g = back_r = 0;
+
+ else if (display->background == NULL /* no way to remove it */)
+ png_error(png_ptr,
+ "a background color must be supplied to remove alpha/transparency");
+
+ /* Get a copy of the background color (this avoids repeating the checks
+ * below.) The encoding is 8-bit sRGB or 16-bit linear, depending on the
+ * output format.
+ */
+ else
+ {
+ back_g = display->background->green;
+ if (output_format & PNG_FORMAT_FLAG_COLOR)
+ {
+ back_r = display->background->red;
+ back_b = display->background->blue;
+ }
+ else
+ back_b = back_r = back_g;
+ }
+ }
+
+ else if (output_encoding == E_LINEAR)
+ back_b = back_r = back_g = 65535;
+
+ else
+ back_b = back_r = back_g = 255;
+
+ /* Default the input file gamma if required - this is necessary because
+ * libpng assumes that if no gamma information is present the data is in the
+ * output format, but the simplified API deduces the gamma from the input
+ * format.
+ */
+ if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) == 0)
+ {
+ /* Do this directly, not using the png_colorspace functions, to ensure
+ * that it happens even if the colorspace is invalid (though probably if
+ * it is the setting will be ignored) Note that the same thing can be
+ * achieved at the application interface with png_set_gAMA.
+ */
+ if (png_ptr->bit_depth == 16 &&
+ (image->flags & PNG_IMAGE_FLAG_16BIT_sRGB) == 0)
+ png_ptr->colorspace.gamma = PNG_GAMMA_LINEAR;
+
+ else
+ png_ptr->colorspace.gamma = PNG_GAMMA_sRGB_INVERSE;
+
+ png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
+ }
+
+ /* Decide what to do based on the PNG color type of the input data. The
+ * utility function png_create_colormap_entry deals with most aspects of the
+ * output transformations; this code works out how to produce bytes of
+ * color-map entries from the original format.
+ */
+ switch (png_ptr->color_type)
+ {
+ case PNG_COLOR_TYPE_GRAY:
+ if (png_ptr->bit_depth <= 8)
+ {
+ /* There at most 256 colors in the output, regardless of
+ * transparency.
+ */
+ unsigned int step, i, val, trans = 256/*ignore*/, back_alpha = 0;
+
+ cmap_entries = 1U << png_ptr->bit_depth;
+ if (cmap_entries > image->colormap_entries)
+ png_error(png_ptr, "gray[8] color-map: too few entries");
+
+ step = 255 / (cmap_entries - 1);
+ output_processing = PNG_CMAP_NONE;
+
+ /* If there is a tRNS chunk then this either selects a transparent
+ * value or, if the output has no alpha, the background color.
+ */
+ if (png_ptr->num_trans > 0)
+ {
+ trans = png_ptr->trans_color.gray;
+
+ if ((output_format & PNG_FORMAT_FLAG_ALPHA) == 0)
+ back_alpha = output_encoding == E_LINEAR ? 65535 : 255;
+ }
+
+ /* png_create_colormap_entry just takes an RGBA and writes the
+ * corresponding color-map entry using the format from 'image',
+ * including the required conversion to sRGB or linear as
+ * appropriate. The input values are always either sRGB (if the
+ * gamma correction flag is 0) or 0..255 scaled file encoded values
+ * (if the function must gamma correct them).
+ */
+ for (i=val=0; i<cmap_entries; ++i, val += step)
+ {
+ /* 'i' is a file value. While this will result in duplicated
+ * entries for 8-bit non-sRGB encoded files it is necessary to
+ * have non-gamma corrected values to do tRNS handling.
+ */
+ if (i != trans)
+ png_create_colormap_entry(display, i, val, val, val, 255,
+ E_FILE/*8-bit with file gamma*/);
+
+ /* Else this entry is transparent. The colors don't matter if
+ * there is an alpha channel (back_alpha == 0), but it does no
+ * harm to pass them in; the values are not set above so this
+ * passes in white.
+ *
+ * NOTE: this preserves the full precision of the application
+ * supplied background color when it is used.
+ */
+ else
+ png_create_colormap_entry(display, i, back_r, back_g, back_b,
+ back_alpha, output_encoding);
+ }
+
+ /* We need libpng to preserve the original encoding. */
+ data_encoding = E_FILE;
+
+ /* The rows from libpng, while technically gray values, are now also
+ * color-map indicies; however, they may need to be expanded to 1
+ * byte per pixel. This is what png_set_packing does (i.e., it
+ * unpacks the bit values into bytes.)
+ */
+ if (png_ptr->bit_depth < 8)
+ png_set_packing(png_ptr);
+ }
+
+ else /* bit depth is 16 */
+ {
+ /* The 16-bit input values can be converted directly to 8-bit gamma
+ * encoded values; however, if a tRNS chunk is present 257 color-map
+ * entries are required. This means that the extra entry requires
+ * special processing; add an alpha channel, sacrifice gray level
+ * 254 and convert transparent (alpha==0) entries to that.
+ *
+ * Use libpng to chop the data to 8 bits. Convert it to sRGB at the
+ * same time to minimize quality loss. If a tRNS chunk is present
+ * this means libpng must handle it too; otherwise it is impossible
+ * to do the exact match on the 16-bit value.
+ *
+ * If the output has no alpha channel *and* the background color is
+ * gray then it is possible to let libpng handle the substitution by
+ * ensuring that the corresponding gray level matches the background
+ * color exactly.
+ */
+ data_encoding = E_sRGB;
+
+ if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
+ png_error(png_ptr, "gray[16] color-map: too few entries");
+
+ cmap_entries = make_gray_colormap(display);
+
+ if (png_ptr->num_trans > 0)
+ {
+ unsigned int back_alpha;
+
+ if (output_format & PNG_FORMAT_FLAG_ALPHA)
+ back_alpha = 0;
+
+ else
+ {
+ if (back_r == back_g && back_g == back_b)
+ {
+ /* Background is gray; no special processing will be
+ * required.
+ */
+ png_color_16 c;
+ png_uint_32 gray = back_g;
+
+ if (output_encoding == E_LINEAR)
+ {
+ gray = PNG_sRGB_FROM_LINEAR(gray * 255);
+
+ /* And make sure the corresponding palette entry
+ * matches.
+ */
+ png_create_colormap_entry(display, gray, back_g, back_g,
+ back_g, 65535, E_LINEAR);
+ }
+
+ /* The background passed to libpng, however, must be the
+ * sRGB value.
+ */
+ c.index = 0; /*unused*/
+ c.gray = c.red = c.green = c.blue = (png_uint_16)gray;
+
+ /* NOTE: does this work without expanding tRNS to alpha?
+ * It should be the color->gray case below apparently
+ * doesn't.
+ */
+ png_set_background_fixed(png_ptr, &c,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
+ 0/*gamma: not used*/);
+
+ output_processing = PNG_CMAP_NONE;
+ break;
+ }
+
+ back_alpha = output_encoding == E_LINEAR ? 65535 : 255;
+ }
+
+ /* output_processing means that the libpng-processed row will be
+ * 8-bit GA and it has to be processing to single byte color-map
+ * values. Entry 254 is replaced by either a completely
+ * transparent entry or by the background color at full
+ * precision (and the background color is not a simple gray leve
+ * in this case.)
+ */
+ expand_tRNS = 1;
+ output_processing = PNG_CMAP_TRANS;
+ background_index = 254;
+
+ /* And set (overwrite) color-map entry 254 to the actual
+ * background color at full precision.
+ */
+ png_create_colormap_entry(display, 254, back_r, back_g, back_b,
+ back_alpha, output_encoding);
+ }
+
+ else
+ output_processing = PNG_CMAP_NONE;
+ }
+ break;
+
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ /* 8-bit or 16-bit PNG with two channels - gray and alpha. A minimum
+ * of 65536 combinations. If, however, the alpha channel is to be
+ * removed there are only 256 possibilities if the background is gray.
+ * (Otherwise there is a subset of the 65536 possibilities defined by
+ * the triangle between black, white and the background color.)
+ *
+ * Reduce 16-bit files to 8-bit and sRGB encode the result. No need to
+ * worry about tRNS matching - tRNS is ignored if there is an alpha
+ * channel.
+ */
+ data_encoding = E_sRGB;
+
+ if (output_format & PNG_FORMAT_FLAG_ALPHA)
+ {
+ if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries)
+ png_error(png_ptr, "gray+alpha color-map: too few entries");
+
+ cmap_entries = make_ga_colormap(display);
+
+ background_index = PNG_CMAP_GA_BACKGROUND;
+ output_processing = PNG_CMAP_GA;
+ }
+
+ else /* alpha is removed */
+ {
+ /* Alpha must be removed as the PNG data is processed when the
+ * background is a color because the G and A channels are
+ * independent and the vector addition (non-parallel vectors) is a
+ * 2-D problem.
+ *
+ * This can be reduced to the same algorithm as above by making a
+ * colormap containing gray levels (for the opaque grays), a
+ * background entry (for a transparent pixel) and a set of four six
+ * level color values, one set for each intermediate alpha value.
+ * See the comments in make_ga_colormap for how this works in the
+ * per-pixel processing.
+ *
+ * If the background is gray, however, we only need a 256 entry gray
+ * level color map. It is sufficient to make the entry generated
+ * for the background color be exactly the color specified.
+ */
+ if ((output_format & PNG_FORMAT_FLAG_COLOR) == 0 ||
+ (back_r == back_g && back_g == back_b))
+ {
+ /* Background is gray; no special processing will be required. */
+ png_color_16 c;
+ png_uint_32 gray = back_g;
+
+ if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
+ png_error(png_ptr, "gray-alpha color-map: too few entries");
+
+ cmap_entries = make_gray_colormap(display);
+
+ if (output_encoding == E_LINEAR)
+ {
+ gray = PNG_sRGB_FROM_LINEAR(gray * 255);
+
+ /* And make sure the corresponding palette entry matches. */
+ png_create_colormap_entry(display, gray, back_g, back_g,
+ back_g, 65535, E_LINEAR);
+ }
+
+ /* The background passed to libpng, however, must be the sRGB
+ * value.
+ */
+ c.index = 0; /*unused*/
+ c.gray = c.red = c.green = c.blue = (png_uint_16)gray;
+
+ png_set_background_fixed(png_ptr, &c,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
+ 0/*gamma: not used*/);
+
+ output_processing = PNG_CMAP_NONE;
+ }
+
+ else
+ {
+ png_uint_32 i, a;
+
+ /* This is the same as png_make_ga_colormap, above, except that
+ * the entries are all opaque.
+ */
+ if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries)
+ png_error(png_ptr, "ga-alpha color-map: too few entries");
+
+ i = 0;
+ while (i < 231)
+ {
+ png_uint_32 gray = (i * 256 + 115) / 231;
+ png_create_colormap_entry(display, i++, gray, gray, gray,
+ 255, E_sRGB);
+ }
+
+ /* NOTE: this preserves the full precision of the application
+ * background color.
+ */
+ background_index = i;
+ png_create_colormap_entry(display, i++, back_r, back_g, back_b,
+ output_encoding == E_LINEAR ? 65535U : 255U, output_encoding);
+
+ /* For non-opaque input composite on the sRGB background - this
+ * requires inverting the encoding for each component. The input
+ * is still converted to the sRGB encoding because this is a
+ * reasonable approximate to the logarithmic curve of human
+ * visual sensitivity, at least over the narrow range which PNG
+ * represents. Consequently 'G' is always sRGB encoded, while
+ * 'A' is linear. We need the linear background colors.
+ */
+ if (output_encoding == E_sRGB) /* else already linear */
+ {
+ /* This may produce a value not exactly matching the
+ * background, but that's ok because these numbers are only
+ * used when alpha != 0
+ */
+ back_r = png_sRGB_table[back_r];
+ back_g = png_sRGB_table[back_g];
+ back_b = png_sRGB_table[back_b];
+ }
+
+ for (a=1; a<5; ++a)
+ {
+ unsigned int g;
+
+ /* PNG_sRGB_FROM_LINEAR expects a 16-bit linear value scaled
+ * by an 8-bit alpha value (0..255).
+ */
+ png_uint_32 alpha = 51 * a;
+ png_uint_32 back_rx = (255-alpha) * back_r;
+ png_uint_32 back_gx = (255-alpha) * back_g;
+ png_uint_32 back_bx = (255-alpha) * back_b;
+
+ for (g=0; g<6; ++g)
+ {
+ png_uint_32 gray = png_sRGB_table[g*51] * alpha;
+
+ png_create_colormap_entry(display, i++,
+ PNG_sRGB_FROM_LINEAR(gray + back_rx),
+ PNG_sRGB_FROM_LINEAR(gray + back_gx),
+ PNG_sRGB_FROM_LINEAR(gray + back_bx), 255, E_sRGB);
+ }
+ }
+
+ cmap_entries = i;
+ output_processing = PNG_CMAP_GA;
+ }
+ }
+ break;
+
+ case PNG_COLOR_TYPE_RGB:
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ /* Exclude the case where the output is gray; we can always handle this
+ * with the cases above.
+ */
+ if ((output_format & PNG_FORMAT_FLAG_COLOR) == 0)
+ {
+ /* The color-map will be grayscale, so we may as well convert the
+ * input RGB values to a simple grayscale and use the grayscale
+ * code above.
+ *
+ * NOTE: calling this apparently damages the recognition of the
+ * transparent color in background color handling; call
+ * png_set_tRNS_to_alpha before png_set_background_fixed.
+ */
+ png_set_rgb_to_gray_fixed(png_ptr, PNG_ERROR_ACTION_NONE, -1,
+ -1);
+ data_encoding = E_sRGB;
+
+ /* The output will now be one or two 8-bit gray or gray+alpha
+ * channels. The more complex case arises when the input has alpha.
+ */
+ if ((png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
+ png_ptr->num_trans > 0) &&
+ (output_format & PNG_FORMAT_FLAG_ALPHA) != 0)
+ {
+ /* Both input and output have an alpha channel, so no background
+ * processing is required; just map the GA bytes to the right
+ * color-map entry.
+ */
+ expand_tRNS = 1;
+
+ if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries)
+ png_error(png_ptr, "rgb[ga] color-map: too few entries");
+
+ cmap_entries = make_ga_colormap(display);
+ background_index = PNG_CMAP_GA_BACKGROUND;
+ output_processing = PNG_CMAP_GA;
+ }
+
+ else
+ {
+ /* Either the input or the output has no alpha channel, so there
+ * will be no non-opaque pixels in the color-map; it will just be
+ * grayscale.
+ */
+ if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
+ png_error(png_ptr, "rgb[gray] color-map: too few entries");
+
+ /* Ideally this code would use libpng to do the gamma correction,
+ * but if an input alpha channel is to be removed we will hit the
+ * libpng bug in gamma+compose+rgb-to-gray (the double gamma
+ * correction bug). Fix this by dropping the gamma correction in
+ * this case and doing it in the palette; this will result in
+ * duplicate palette entries, but that's better than the
+ * alternative of double gamma correction.
+ */
+ if ((png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
+ png_ptr->num_trans > 0) &&
+ png_gamma_not_sRGB(png_ptr->colorspace.gamma))
+ {
+ cmap_entries = make_gray_file_colormap(display);
+ data_encoding = E_FILE;
+ }
+
+ else
+ cmap_entries = make_gray_colormap(display);
+
+ /* But if the input has alpha or transparency it must be removed
+ */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
+ png_ptr->num_trans > 0)
+ {
+ png_color_16 c;
+ png_uint_32 gray = back_g;
+
+ /* We need to ensure that the application background exists in
+ * the colormap and that completely transparent pixels map to
+ * it. Achieve this simply by ensuring that the entry
+ * selected for the background really is the background color.
+ */
+ if (data_encoding == E_FILE) /* from the fixup above */
+ {
+ /* The app supplied a gray which is in output_encoding, we
+ * need to convert it to a value of the input (E_FILE)
+ * encoding then set this palette entry to the required
+ * output encoding.
+ */
+ if (output_encoding == E_sRGB)
+ gray = png_sRGB_table[gray]; /* now E_LINEAR */
+
+ gray = PNG_DIV257(png_gamma_16bit_correct(gray,
+ png_ptr->colorspace.gamma)); /* now E_FILE */
+
+ /* And make sure the corresponding palette entry contains
+ * exactly the required sRGB value.
+ */
+ png_create_colormap_entry(display, gray, back_g, back_g,
+ back_g, 0/*unused*/, output_encoding);
+ }
+
+ else if (output_encoding == E_LINEAR)
+ {
+ gray = PNG_sRGB_FROM_LINEAR(gray * 255);
+
+ /* And make sure the corresponding palette entry matches.
+ */
+ png_create_colormap_entry(display, gray, back_g, back_g,
+ back_g, 0/*unused*/, E_LINEAR);
+ }
+
+ /* The background passed to libpng, however, must be the
+ * output (normally sRGB) value.
+ */
+ c.index = 0; /*unused*/
+ c.gray = c.red = c.green = c.blue = (png_uint_16)gray;
+
+ /* NOTE: the following is apparently a bug in libpng. Without
+ * it the transparent color recognition in
+ * png_set_background_fixed seems to go wrong.
+ */
+ expand_tRNS = 1;
+ png_set_background_fixed(png_ptr, &c,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
+ 0/*gamma: not used*/);
+ }
+
+ output_processing = PNG_CMAP_NONE;
+ }
+ }
+
+ else /* output is color */
+ {
+ /* We could use png_quantize here so long as there is no transparent
+ * color or alpha; png_quantize ignores alpha. Easier overall just
+ * to do it once and using PNG_DIV51 on the 6x6x6 reduced RGB cube.
+ * Consequently we always want libpng to produce sRGB data.
+ */
+ data_encoding = E_sRGB;
+
+ /* Is there any transparency or alpha? */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
+ png_ptr->num_trans > 0)
+ {
+ /* Is there alpha in the output too? If so all four channels are
+ * processed into a special RGB cube with alpha support.
+ */
+ if (output_format & PNG_FORMAT_FLAG_ALPHA)
+ {
+ png_uint_32 r;
+
+ if (PNG_RGB_COLORMAP_ENTRIES+1+27 > image->colormap_entries)
+ png_error(png_ptr, "rgb+alpha color-map: too few entries");
+
+ cmap_entries = make_rgb_colormap(display);
+
+ /* Add a transparent entry. */
+ png_create_colormap_entry(display, cmap_entries, 255, 255,
+ 255, 0, E_sRGB);
+
+ /* This is stored as the background index for the processing
+ * algorithm.
+ */
+ background_index = cmap_entries++;
+
+ /* Add 27 r,g,b entries each with alpha 0.5. */
+ for (r=0; r<256; r = (r << 1) | 0x7f)
+ {
+ png_uint_32 g;
+
+ for (g=0; g<256; g = (g << 1) | 0x7f)
+ {
+ png_uint_32 b;
+
+ /* This generates components with the values 0, 127 and
+ * 255
+ */
+ for (b=0; b<256; b = (b << 1) | 0x7f)
+ png_create_colormap_entry(display, cmap_entries++,
+ r, g, b, 128, E_sRGB);
+ }
+ }
+
+ expand_tRNS = 1;
+ output_processing = PNG_CMAP_RGB_ALPHA;
+ }
+
+ else
+ {
+ /* Alpha/transparency must be removed. The background must
+ * exist in the color map (achieved by setting adding it after
+ * the 666 color-map). If the standard processing code will
+ * pick up this entry automatically that's all that is
+ * required; libpng can be called to do the background
+ * processing.
+ */
+ unsigned int sample_size =
+ PNG_IMAGE_SAMPLE_SIZE(output_format);
+ png_uint_32 r, g, b; /* sRGB background */
+
+ if (PNG_RGB_COLORMAP_ENTRIES+1+27 > image->colormap_entries)
+ png_error(png_ptr, "rgb-alpha color-map: too few entries");
+
+ cmap_entries = make_rgb_colormap(display);
+
+ png_create_colormap_entry(display, cmap_entries, back_r,
+ back_g, back_b, 0/*unused*/, output_encoding);
+
+ if (output_encoding == E_LINEAR)
+ {
+ r = PNG_sRGB_FROM_LINEAR(back_r * 255);
+ g = PNG_sRGB_FROM_LINEAR(back_g * 255);
+ b = PNG_sRGB_FROM_LINEAR(back_b * 255);
+ }
+
+ else
+ {
+ r = back_r;
+ g = back_g;
+ b = back_g;
+ }
+
+ /* Compare the newly-created color-map entry with the one the
+ * PNG_CMAP_RGB algorithm will use. If the two entries don't
+ * match, add the new one and set this as the background
+ * index.
+ */
+ if (memcmp((png_const_bytep)display->colormap +
+ sample_size * cmap_entries,
+ (png_const_bytep)display->colormap +
+ sample_size * PNG_RGB_INDEX(r,g,b),
+ sample_size) != 0)
+ {
+ /* The background color must be added. */
+ background_index = cmap_entries++;
+
+ /* Add 27 r,g,b entries each with created by composing with
+ * the background at alpha 0.5.
+ */
+ for (r=0; r<256; r = (r << 1) | 0x7f)
+ {
+ for (g=0; g<256; g = (g << 1) | 0x7f)
+ {
+ /* This generates components with the values 0, 127
+ * and 255
+ */
+ for (b=0; b<256; b = (b << 1) | 0x7f)
+ png_create_colormap_entry(display, cmap_entries++,
+ png_colormap_compose(display, r, E_sRGB, 128,
+ back_r, output_encoding),
+ png_colormap_compose(display, g, E_sRGB, 128,
+ back_g, output_encoding),
+ png_colormap_compose(display, b, E_sRGB, 128,
+ back_b, output_encoding),
+ 0/*unused*/, output_encoding);
+ }
+ }
+
+ expand_tRNS = 1;
+ output_processing = PNG_CMAP_RGB_ALPHA;
+ }
+
+ else /* background color is in the standard color-map */
+ {
+ png_color_16 c;
+
+ c.index = 0; /*unused*/
+ c.red = (png_uint_16)back_r;
+ c.gray = c.green = (png_uint_16)back_g;
+ c.blue = (png_uint_16)back_b;
+
+ png_set_background_fixed(png_ptr, &c,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
+ 0/*gamma: not used*/);
+
+ output_processing = PNG_CMAP_RGB;
+ }
+ }
+ }
+
+ else /* no alpha or transparency in the input */
+ {
+ /* Alpha in the output is irrelevant, simply map the opaque input
+ * pixels to the 6x6x6 color-map.
+ */
+ if (PNG_RGB_COLORMAP_ENTRIES > image->colormap_entries)
+ png_error(png_ptr, "rgb color-map: too few entries");
+
+ cmap_entries = make_rgb_colormap(display);
+ output_processing = PNG_CMAP_RGB;
+ }
+ }
+ break;
+
+ case PNG_COLOR_TYPE_PALETTE:
+ /* It's already got a color-map. It may be necessary to eliminate the
+ * tRNS entries though.
+ */
+ {
+ unsigned int num_trans = png_ptr->num_trans;
+ png_const_bytep trans = num_trans > 0 ? png_ptr->trans_alpha : NULL;
+ png_const_colorp colormap = png_ptr->palette;
+ const int do_background = trans != NULL &&
+ (output_format & PNG_FORMAT_FLAG_ALPHA) == 0;
+ unsigned int i;
+
+ /* Just in case: */
+ if (trans == NULL)
+ num_trans = 0;
+
+ output_processing = PNG_CMAP_NONE;
+ data_encoding = E_FILE; /* Don't change from color-map indicies */
+ cmap_entries = png_ptr->num_palette;
+ if (cmap_entries > 256)
+ cmap_entries = 256;
+
+ if (cmap_entries > image->colormap_entries)
+ png_error(png_ptr, "palette color-map: too few entries");
+
+ for (i=0; i < cmap_entries; ++i)
+ {
+ if (do_background && i < num_trans && trans[i] < 255)
+ {
+ if (trans[i] == 0)
+ png_create_colormap_entry(display, i, back_r, back_g,
+ back_b, 0, output_encoding);
+
+ else
+ {
+ /* Must compose the PNG file color in the color-map entry
+ * on the sRGB color in 'back'.
+ */
+ png_create_colormap_entry(display, i,
+ png_colormap_compose(display, colormap[i].red, E_FILE,
+ trans[i], back_r, output_encoding),
+ png_colormap_compose(display, colormap[i].green, E_FILE,
+ trans[i], back_g, output_encoding),
+ png_colormap_compose(display, colormap[i].blue, E_FILE,
+ trans[i], back_b, output_encoding),
+ output_encoding == E_LINEAR ? trans[i] * 257U :
+ trans[i],
+ output_encoding);
+ }
+ }
+
+ else
+ png_create_colormap_entry(display, i, colormap[i].red,
+ colormap[i].green, colormap[i].blue,
+ i < num_trans ? trans[i] : 255U, E_FILE/*8-bit*/);
+ }
+
+ /* The PNG data may have indicies packed in fewer than 8 bits, it
+ * must be expanded if so.
+ */
+ if (png_ptr->bit_depth < 8)
+ png_set_packing(png_ptr);
+ }
+ break;
+
+ default:
+ png_error(png_ptr, "invalid PNG color type");
+ /*NOT REACHED*/
+ break;
+ }
+
+ /* Now deal with the output processing */
+ if (expand_tRNS && png_ptr->num_trans > 0 &&
+ (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) == 0)
+ png_set_tRNS_to_alpha(png_ptr);
+
+ switch (data_encoding)
+ {
+ default:
+ png_error(png_ptr, "bad data option (internal error)");
+ break;
+
+ case E_sRGB:
+ /* Change to 8-bit sRGB */
+ png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, PNG_GAMMA_sRGB);
+ /* FALL THROUGH */
+
+ case E_FILE:
+ if (png_ptr->bit_depth > 8)
+ png_set_scale_16(png_ptr);
+ break;
+ }
+
+ if (cmap_entries > 256 || cmap_entries > image->colormap_entries)
+ png_error(png_ptr, "color map overflow (BAD internal error)");
+
+ image->colormap_entries = cmap_entries;
+
+ /* Double check using the recorded background index */
+ switch (output_processing)
+ {
+ case PNG_CMAP_NONE:
+ if (background_index != PNG_CMAP_NONE_BACKGROUND)
+ goto bad_background;
+ break;
+
+ case PNG_CMAP_GA:
+ if (background_index != PNG_CMAP_GA_BACKGROUND)
+ goto bad_background;
+ break;
+
+ case PNG_CMAP_TRANS:
+ if (background_index >= cmap_entries ||
+ background_index != PNG_CMAP_TRANS_BACKGROUND)
+ goto bad_background;
+ break;
+
+ case PNG_CMAP_RGB:
+ if (background_index != PNG_CMAP_RGB_BACKGROUND)
+ goto bad_background;
+ break;
+
+ case PNG_CMAP_RGB_ALPHA:
+ if (background_index != PNG_CMAP_RGB_ALPHA_BACKGROUND)
+ goto bad_background;
+ break;
+
+ default:
+ png_error(png_ptr, "bad processing option (internal error)");
+
+ bad_background:
+ png_error(png_ptr, "bad background index (internal error)");
+ }
+
+ display->colormap_processing = output_processing;
+
+ return 1/*ok*/;
+}
+
+/* The final part of the color-map read called from png_image_finish_read. */
+static int
+png_image_read_and_map(png_voidp argument)
+{
+ png_image_read_control *display = png_voidcast(png_image_read_control*,
+ argument);
+ png_imagep image = display->image;
+ png_structrp png_ptr = image->opaque->png_ptr;
+ int passes;
+
+ /* Called when the libpng data must be transformed into the color-mapped
+ * form. There is a local row buffer in display->local and this routine must
+ * do the interlace handling.
+ */
+ switch (png_ptr->interlaced)
+ {
+ case PNG_INTERLACE_NONE:
+ passes = 1;
+ break;
+
+ case PNG_INTERLACE_ADAM7:
+ passes = PNG_INTERLACE_ADAM7_PASSES;
+ break;
+
+ default:
+ passes = 0;
+ png_error(png_ptr, "unknown interlace type");
+ }
+
+ {
+ png_uint_32 height = image->height;
+ png_uint_32 width = image->width;
+ int proc = display->colormap_processing;
+ png_bytep first_row = png_voidcast(png_bytep, display->first_row);
+ ptrdiff_t step_row = display->row_bytes;
+ int pass;
+
+ for (pass = 0; pass < passes; ++pass)
+ {
+ unsigned int startx, stepx, stepy;
+ png_uint_32 y;
+
+ if (png_ptr->interlaced == PNG_INTERLACE_ADAM7)
+ {
+ /* The row may be empty for a short image: */
+ if (PNG_PASS_COLS(width, pass) == 0)
+ continue;
+
+ startx = PNG_PASS_START_COL(pass);
+ stepx = PNG_PASS_COL_OFFSET(pass);
+ y = PNG_PASS_START_ROW(pass);
+ stepy = PNG_PASS_ROW_OFFSET(pass);
+ }
+
+ else
+ {
+ y = 0;
+ startx = 0;
+ stepx = stepy = 1;
+ }
+
+ for (; y<height; y += stepy)
+ {
+ png_bytep inrow = png_voidcast(png_bytep, display->local_row);
+ png_bytep outrow = first_row + y * step_row;
+ png_const_bytep end_row = outrow + width;
+
+ /* Read read the libpng data into the temporary buffer. */
+ png_read_row(png_ptr, inrow, NULL);
+
+ /* Now process the row according to the processing option, note
+ * that the caller verifies that the format of the libpng output
+ * data is as required.
+ */
+ outrow += startx;
+ switch (proc)
+ {
+ case PNG_CMAP_GA:
+ for (; outrow < end_row; outrow += stepx)
+ {
+ /* The data is always in the PNG order */
+ unsigned int gray = *inrow++;
+ unsigned int alpha = *inrow++;
+ unsigned int entry;
+
+ /* NOTE: this code is copied as a comment in
+ * make_ga_colormap above. Please update the
+ * comment if you change this code!
+ */
+ if (alpha > 229) /* opaque */
+ {
+ entry = (231 * gray + 128) >> 8;
+ }
+ else if (alpha < 26) /* transparent */
+ {
+ entry = 231;
+ }
+ else /* partially opaque */
+ {
+ entry = 226 + 6 * PNG_DIV51(alpha) + PNG_DIV51(gray);
+ }
+
+ *outrow = (png_byte)entry;
+ }
+ break;
+
+ case PNG_CMAP_TRANS:
+ for (; outrow < end_row; outrow += stepx)
+ {
+ png_byte gray = *inrow++;
+ png_byte alpha = *inrow++;
+
+ if (alpha == 0)
+ *outrow = PNG_CMAP_TRANS_BACKGROUND;
+
+ else if (gray != PNG_CMAP_TRANS_BACKGROUND)
+ *outrow = gray;
+
+ else
+ *outrow = (png_byte)(PNG_CMAP_TRANS_BACKGROUND+1);
+ }
+ break;
+
+ case PNG_CMAP_RGB:
+ for (; outrow < end_row; outrow += stepx)
+ {
+ *outrow = PNG_RGB_INDEX(inrow[0], inrow[1], inrow[2]);
+ inrow += 3;
+ }
+ break;
+
+ case PNG_CMAP_RGB_ALPHA:
+ for (; outrow < end_row; outrow += stepx)
+ {
+ unsigned int alpha = inrow[3];
+
+ /* Because the alpha entries only hold alpha==0.5 values
+ * split the processing at alpha==0.25 (64) and 0.75
+ * (196).
+ */
+
+ if (alpha >= 196)
+ *outrow = PNG_RGB_INDEX(inrow[0], inrow[1],
+ inrow[2]);
+
+ else if (alpha < 64)
+ *outrow = PNG_CMAP_RGB_ALPHA_BACKGROUND;
+
+ else
+ {
+ /* Likewise there are three entries for each of r, g
+ * and b. We could select the entry by popcount on
+ * the top two bits on those architectures that
+ * support it, this is what the code below does,
+ * crudely.
+ */
+ unsigned int back_i = PNG_CMAP_RGB_ALPHA_BACKGROUND+1;
+
+ /* Here are how the values map:
+ *
+ * 0x00 .. 0x3f -> 0
+ * 0x40 .. 0xbf -> 1
+ * 0xc0 .. 0xff -> 2
+ *
+ * So, as above with the explicit alpha checks, the
+ * breakpoints are at 64 and 196.
+ */
+ if (inrow[0] & 0x80) back_i += 9; /* red */
+ if (inrow[0] & 0x40) back_i += 9;
+ if (inrow[0] & 0x80) back_i += 3; /* green */
+ if (inrow[0] & 0x40) back_i += 3;
+ if (inrow[0] & 0x80) back_i += 1; /* blue */
+ if (inrow[0] & 0x40) back_i += 1;
+
+ *outrow = (png_byte)back_i;
+ }
+
+ inrow += 4;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ return 1;
+}
+
+static int
+png_image_read_colormapped(png_voidp argument)
+{
+ png_image_read_control *display = png_voidcast(png_image_read_control*,
+ argument);
+ png_imagep image = display->image;
+ png_controlp control = image->opaque;
+ png_structrp png_ptr = control->png_ptr;
+ png_inforp info_ptr = control->info_ptr;
+
+ int passes = 0; /* As a flag */
+
+ PNG_SKIP_CHUNKS(png_ptr);
+
+ /* Update the 'info' structure and make sure the result is as required; first
+ * make sure to turn on the interlace handling if it will be required
+ * (because it can't be turned on *after* the call to png_read_update_info!)
+ */
+ if (display->colormap_processing == PNG_CMAP_NONE)
+ passes = png_set_interlace_handling(png_ptr);
+
+ png_read_update_info(png_ptr, info_ptr);
+
+ /* The expected output can be deduced from the colormap_processing option. */
+ switch (display->colormap_processing)
+ {
+ case PNG_CMAP_NONE:
+ /* Output must be one channel and one byte per pixel, the output
+ * encoding can be anything.
+ */
+ if ((info_ptr->color_type == PNG_COLOR_TYPE_PALETTE ||
+ info_ptr->color_type == PNG_COLOR_TYPE_GRAY) &&
+ info_ptr->bit_depth == 8)
+ break;
+
+ goto bad_output;
+
+ case PNG_CMAP_TRANS:
+ case PNG_CMAP_GA:
+ /* Output must be two channels and the 'G' one must be sRGB, the latter
+ * can be checked with an exact number because it should have been set
+ * to this number above!
+ */
+ if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
+ info_ptr->bit_depth == 8 &&
+ png_ptr->screen_gamma == PNG_GAMMA_sRGB &&
+ image->colormap_entries == 256)
+ break;
+
+ goto bad_output;
+
+ case PNG_CMAP_RGB:
+ /* Output must be 8-bit sRGB encoded RGB */
+ if (info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+ info_ptr->bit_depth == 8 &&
+ png_ptr->screen_gamma == PNG_GAMMA_sRGB &&
+ image->colormap_entries == 216)
+ break;
+
+ goto bad_output;
+
+ case PNG_CMAP_RGB_ALPHA:
+ /* Output must be 8-bit sRGB encoded RGBA */
+ if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
+ info_ptr->bit_depth == 8 &&
+ png_ptr->screen_gamma == PNG_GAMMA_sRGB &&
+ image->colormap_entries == 244 /* 216 + 1 + 27 */)
+ break;
+
+ /* goto bad_output; */
+ /* FALL THROUGH */
+
+ default:
+ bad_output:
+ png_error(png_ptr, "bad color-map processing (internal error)");
+ }
+
+ /* Now read the rows. Do this here if it is possible to read directly into
+ * the output buffer, otherwise allocate a local row buffer of the maximum
+ * size libpng requires and call the relevant processing routine safely.
+ */
+ {
+ png_voidp first_row = display->buffer;
+ ptrdiff_t row_bytes = display->row_stride;
+
+ /* The following expression is designed to work correctly whether it gives
+ * a signed or an unsigned result.
+ */
+ if (row_bytes < 0)
+ {
+ char *ptr = png_voidcast(char*, first_row);
+ ptr += (image->height-1) * (-row_bytes);
+ first_row = png_voidcast(png_voidp, ptr);
+ }
+
+ display->first_row = first_row;
+ display->row_bytes = row_bytes;
+ }
+
+ if (passes == 0)
+ {
+ int result;
+ png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr));
+
+ display->local_row = row;
+ result = png_safe_execute(image, png_image_read_and_map, display);
+ display->local_row = NULL;
+ png_free(png_ptr, row);
+
+ return result;
+ }
+
+ else
+ {
+ png_alloc_size_t row_bytes = display->row_bytes;
+
+ while (--passes >= 0)
+ {
+ png_uint_32 y = image->height;
+ png_bytep row = png_voidcast(png_bytep, display->first_row);
+
+ while (y-- > 0)
+ {
+ png_read_row(png_ptr, row, NULL);
+ row += row_bytes;
+ }
+ }
+
+ return 1;
+ }
+}
+
+/* Just the row reading part of png_image_read. */
+static int
+png_image_read_composite(png_voidp argument)
+{
+ png_image_read_control *display = png_voidcast(png_image_read_control*,
+ argument);
+ png_imagep image = display->image;
+ png_structrp png_ptr = image->opaque->png_ptr;
+ int passes;
+
+ switch (png_ptr->interlaced)
+ {
+ case PNG_INTERLACE_NONE:
+ passes = 1;
+ break;
+
+ case PNG_INTERLACE_ADAM7:
+ passes = PNG_INTERLACE_ADAM7_PASSES;
+ break;
+
+ default:
+ passes = 0;
+ png_error(png_ptr, "unknown interlace type");
+ }
+
+ {
+ png_uint_32 height = image->height;
+ png_uint_32 width = image->width;
+ ptrdiff_t step_row = display->row_bytes;
+ unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
+ int pass;
+
+ for (pass = 0; pass < passes; ++pass)
+ {
+ unsigned int startx, stepx, stepy;
+ png_uint_32 y;
+
+ if (png_ptr->interlaced == PNG_INTERLACE_ADAM7)
+ {
+ /* The row may be empty for a short image: */
+ if (PNG_PASS_COLS(width, pass) == 0)
+ continue;
+
+ startx = PNG_PASS_START_COL(pass) * channels;
+ stepx = PNG_PASS_COL_OFFSET(pass) * channels;
+ y = PNG_PASS_START_ROW(pass);
+ stepy = PNG_PASS_ROW_OFFSET(pass);
+ }
+
+ else
+ {
+ y = 0;
+ startx = 0;
+ stepx = channels;
+ stepy = 1;
+ }
+
+ for (; y<height; y += stepy)
+ {
+ png_bytep inrow = png_voidcast(png_bytep, display->local_row);
+ png_bytep outrow;
+ png_const_bytep end_row;
+
+ /* Read the row, which is packed: */
+ png_read_row(png_ptr, inrow, NULL);
+
+ outrow = png_voidcast(png_bytep, display->first_row);
+ outrow += y * step_row;
+ end_row = outrow + width * channels;
+
+ /* Now do the composition on each pixel in this row. */
+ outrow += startx;
+ for (; outrow < end_row; outrow += stepx)
+ {
+ png_byte alpha = inrow[channels];
+
+ if (alpha > 0) /* else no change to the output */
+ {
+ unsigned int c;
+
+ for (c=0; c<channels; ++c)
+ {
+ png_uint_32 component = inrow[c];
+
+ if (alpha < 255) /* else just use component */
+ {
+ /* This is PNG_OPTIMIZED_ALPHA, the component value
+ * is a linear 8-bit value. Combine this with the
+ * current outrow[c] value which is sRGB encoded.
+ * Arithmetic here is 16-bits to preserve the output
+ * values correctly.
+ */
+ component *= 257*255; /* =65535 */
+ component += (255-alpha)*png_sRGB_table[outrow[c]];
+
+ /* So 'component' is scaled by 255*65535 and is
+ * therefore appropriate for the sRGB to linear
+ * conversion table.
+ */
+ component = PNG_sRGB_FROM_LINEAR(component);
+ }
+
+ outrow[c] = (png_byte)component;
+ }
+ }
+
+ inrow += channels+1; /* components and alpha channel */
+ }
+ }
+ }
+ }
+
+ return 1;
+}
+
+/* The do_local_background case; called when all the following transforms are to
+ * be done:
+ *
+ * PNG_RGB_TO_GRAY
+ * PNG_COMPOSITE
+ * PNG_GAMMA
+ *
+ * This is a work-round for the fact that both the PNG_RGB_TO_GRAY and
+ * PNG_COMPOSITE code performs gamma correction, so we get double gamma
+ * correction. The fix-up is to prevent the PNG_COMPOSITE operation happening
+ * inside libpng, so this routine sees an 8 or 16-bit gray+alpha row and handles
+ * the removal or pre-multiplication of the alpha channel.
+ */
+static int
+png_image_read_background(png_voidp argument)
+{
+ png_image_read_control *display = png_voidcast(png_image_read_control*,
+ argument);
+ png_imagep image = display->image;
+ png_structrp png_ptr = image->opaque->png_ptr;
+ png_inforp info_ptr = image->opaque->info_ptr;
+ png_uint_32 height = image->height;
+ png_uint_32 width = image->width;
+ int pass, passes;
+
+ /* Double check the convoluted logic below. We expect to get here with
+ * libpng doing rgb to gray and gamma correction but background processing
+ * left to the png_image_read_background function. The rows libpng produce
+ * might be 8 or 16-bit but should always have two channels; gray plus alpha.
+ */
+ if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == 0)
+ png_error(png_ptr, "lost rgb to gray");
+
+ if ((png_ptr->transformations & PNG_COMPOSE) != 0)
+ png_error(png_ptr, "unexpected compose");
+
+ if (png_get_channels(png_ptr, info_ptr) != 2)
+ png_error(png_ptr, "lost/gained channels");
+
+ /* Expect the 8-bit case to always remove the alpha channel */
+ if ((image->format & PNG_FORMAT_FLAG_LINEAR) == 0 &&
+ (image->format & PNG_FORMAT_FLAG_ALPHA) != 0)
+ png_error(png_ptr, "unexpected 8-bit transformation");
+
+ switch (png_ptr->interlaced)
+ {
+ case PNG_INTERLACE_NONE:
+ passes = 1;
+ break;
+
+ case PNG_INTERLACE_ADAM7:
+ passes = PNG_INTERLACE_ADAM7_PASSES;
+ break;
+
+ default:
+ passes = 0;
+ png_error(png_ptr, "unknown interlace type");
+ }
+
+ switch (png_get_bit_depth(png_ptr, info_ptr))
+ {
+ default:
+ png_error(png_ptr, "unexpected bit depth");
+ break;
+
+ case 8:
+ /* 8-bit sRGB gray values with an alpha channel; the alpha channel is
+ * to be removed by composing on a backgroundi: either the row if
+ * display->background is NULL or display->background->green if not.
+ * Unlike the code above ALPHA_OPTIMIZED has *not* been done.
+ */
+ {
+ png_bytep first_row = png_voidcast(png_bytep, display->first_row);
+ ptrdiff_t step_row = display->row_bytes;
+
+ for (pass = 0; pass < passes; ++pass)
+ {
+ png_bytep row = png_voidcast(png_bytep,
+ display->first_row);
+ unsigned int startx, stepx, stepy;
+ png_uint_32 y;
+
+ if (png_ptr->interlaced == PNG_INTERLACE_ADAM7)
+ {
+ /* The row may be empty for a short image: */
+ if (PNG_PASS_COLS(width, pass) == 0)
+ continue;
+
+ startx = PNG_PASS_START_COL(pass);
+ stepx = PNG_PASS_COL_OFFSET(pass);
+ y = PNG_PASS_START_ROW(pass);
+ stepy = PNG_PASS_ROW_OFFSET(pass);
+ }
+
+ else
+ {
+ y = 0;
+ startx = 0;
+ stepx = stepy = 1;
+ }
+
+ if (display->background == NULL)
+ {
+ for (; y<height; y += stepy)
+ {
+ png_bytep inrow = png_voidcast(png_bytep,
+ display->local_row);
+ png_bytep outrow = first_row + y * step_row;
+ png_const_bytep end_row = outrow + width;
+
+ /* Read the row, which is packed: */
+ png_read_row(png_ptr, inrow, NULL);
+
+ /* Now do the composition on each pixel in this row. */
+ outrow += startx;
+ for (; outrow < end_row; outrow += stepx)
+ {
+ png_byte alpha = inrow[1];
+
+ if (alpha > 0) /* else no change to the output */
+ {
+ png_uint_32 component = inrow[0];
+
+ if (alpha < 255) /* else just use component */
+ {
+ /* Since PNG_OPTIMIZED_ALPHA was not set it is
+ * necessary to invert the sRGB transfer
+ * function and multiply the alpha out.
+ */
+ component = png_sRGB_table[component] * alpha;
+ component += png_sRGB_table[outrow[0]] *
+ (255-alpha);
+ component = PNG_sRGB_FROM_LINEAR(component);
+ }
+
+ outrow[0] = (png_byte)component;
+ }
+
+ inrow += 2; /* gray and alpha channel */
+ }
+ }
+ }
+
+ else /* constant background value */
+ {
+ png_byte background8 = display->background->green;
+ png_uint_16 background = png_sRGB_table[background8];
+
+ for (; y<height; y += stepy)
+ {
+ png_bytep inrow = png_voidcast(png_bytep,
+ display->local_row);
+ png_bytep outrow = first_row + y * step_row;
+ png_const_bytep end_row = outrow + width;
+
+ /* Read the row, which is packed: */
+ png_read_row(png_ptr, inrow, NULL);
+
+ /* Now do the composition on each pixel in this row. */
+ outrow += startx;
+ for (; outrow < end_row; outrow += stepx)
+ {
+ png_byte alpha = inrow[1];
+
+ if (alpha > 0) /* else use background */
+ {
+ png_uint_32 component = inrow[0];
+
+ if (alpha < 255) /* else just use component */
+ {
+ component = png_sRGB_table[component] * alpha;
+ component += background * (255-alpha);
+ component = PNG_sRGB_FROM_LINEAR(component);
+ }
+
+ outrow[0] = (png_byte)component;
+ }
+
+ else
+ outrow[0] = background8;
+
+ inrow += 2; /* gray and alpha channel */
+ }
+
+ row += display->row_bytes;
+ }
+ }
+ }
+ }
+ break;
+
+ case 16:
+ /* 16-bit linear with pre-multiplied alpha; the pre-multiplication must
+ * still be done and, maybe, the alpha channel removed. This code also
+ * handles the alpha-first option.
+ */
+ {
+ png_uint_16p first_row = png_voidcast(png_uint_16p,
+ display->first_row);
+ /* The division by two is safe because the caller passed in a
+ * stride which was multiplied by 2 (below) to get row_bytes.
+ */
+ ptrdiff_t step_row = display->row_bytes / 2;
+ int preserve_alpha = (image->format & PNG_FORMAT_FLAG_ALPHA) != 0;
+ unsigned int outchannels = 1+preserve_alpha;
+ int swap_alpha = 0;
+
+ if (preserve_alpha && (image->format & PNG_FORMAT_FLAG_AFIRST))
+ swap_alpha = 1;
+
+ for (pass = 0; pass < passes; ++pass)
+ {
+ unsigned int startx, stepx, stepy;
+ png_uint_32 y;
+
+ /* The 'x' start and step are adjusted to output components here.
+ */
+ if (png_ptr->interlaced == PNG_INTERLACE_ADAM7)
+ {
+ /* The row may be empty for a short image: */
+ if (PNG_PASS_COLS(width, pass) == 0)
+ continue;
+
+ startx = PNG_PASS_START_COL(pass) * outchannels;
+ stepx = PNG_PASS_COL_OFFSET(pass) * outchannels;
+ y = PNG_PASS_START_ROW(pass);
+ stepy = PNG_PASS_ROW_OFFSET(pass);
+ }
+
+ else
+ {
+ y = 0;
+ startx = 0;
+ stepx = outchannels;
+ stepy = 1;
+ }
+
+ for (; y<height; y += stepy)
+ {
+ png_const_uint_16p inrow;
+ png_uint_16p outrow = first_row + y*step_row;
+ png_uint_16p end_row = outrow + width * outchannels;
+
+ /* Read the row, which is packed: */
+ png_read_row(png_ptr, png_voidcast(png_bytep,
+ display->local_row), NULL);
+ inrow = png_voidcast(png_const_uint_16p, display->local_row);
+
+ /* Now do the pre-multiplication on each pixel in this row.
+ */
+ outrow += startx;
+ for (; outrow < end_row; outrow += stepx)
+ {
+ png_uint_32 component = inrow[0];
+ png_uint_16 alpha = inrow[1];
+
+ if (alpha > 0) /* else 0 */
+ {
+ if (alpha < 65535) /* else just use component */
+ {
+ component *= alpha;
+ component += 32767;
+ component /= 65535;
+ }
+ }
+
+ else
+ component = 0;
+
+ outrow[swap_alpha] = (png_uint_16)component;
+ if (preserve_alpha)
+ outrow[1 ^ swap_alpha] = alpha;
+
+ inrow += 2; /* components and alpha channel */
+ }
+ }
+ }
+ }
+ break;
+ }
+
+ return 1;
+}
+
+/* The guts of png_image_finish_read as a png_safe_execute callback. */
+static int
+png_image_read_direct(png_voidp argument)
+{
+ png_image_read_control *display = png_voidcast(png_image_read_control*,
+ argument);
+ png_imagep image = display->image;
+ png_structrp png_ptr = image->opaque->png_ptr;
+ png_inforp info_ptr = image->opaque->info_ptr;
+
+ png_uint_32 format = image->format;
+ int linear = (format & PNG_FORMAT_FLAG_LINEAR) != 0;
+ int do_local_compose = 0;
+ int do_local_background = 0; /* to avoid double gamma correction bug */
+ int passes = 0;
+
+ /* Add transforms to ensure the correct output format is produced then check
+ * that the required implementation support is there. Always expand; always
+ * need 8 bits minimum, no palette and expanded tRNS.
+ */
+ png_set_expand(png_ptr);
+
+ /* Now check the format to see if it was modified. */
+ {
+ png_uint_32 base_format = png_image_format(png_ptr) &
+ ~PNG_FORMAT_FLAG_COLORMAP /* removed by png_set_expand */;
+ png_uint_32 change = format ^ base_format;
+ png_fixed_point output_gamma;
+ int mode; /* alpha mode */
+
+ /* Do this first so that we have a record if rgb to gray is happening. */
+ if (change & PNG_FORMAT_FLAG_COLOR)
+ {
+ /* gray<->color transformation required. */
+ if (format & PNG_FORMAT_FLAG_COLOR)
+ png_set_gray_to_rgb(png_ptr);
+
+ else
+ {
+ /* libpng can't do both rgb to gray and
+ * background/pre-multiplication if there is also significant gamma
+ * correction, because both operations require linear colors and
+ * the code only supports one transform doing the gamma correction.
+ * Handle this by doing the pre-multiplication or background
+ * operation in this code, if necessary.
+ *
+ * TODO: fix this by rewriting pngrtran.c (!)
+ *
+ * For the moment (given that fixing this in pngrtran.c is an
+ * enormous change) 'do_local_background' is used to indicate that
+ * the problem exists.
+ */
+ if (base_format & PNG_FORMAT_FLAG_ALPHA)
+ do_local_background = 1/*maybe*/;
+
+ png_set_rgb_to_gray_fixed(png_ptr, PNG_ERROR_ACTION_NONE,
+ PNG_RGB_TO_GRAY_DEFAULT, PNG_RGB_TO_GRAY_DEFAULT);
+ }
+
+ change &= ~PNG_FORMAT_FLAG_COLOR;
+ }
+
+ /* Set the gamma appropriately, linear for 16-bit input, sRGB otherwise.
+ */
+ {
+ png_fixed_point input_gamma_default;
+
+ if ((base_format & PNG_FORMAT_FLAG_LINEAR) &&
+ (image->flags & PNG_IMAGE_FLAG_16BIT_sRGB) == 0)
+ input_gamma_default = PNG_GAMMA_LINEAR;
+ else
+ input_gamma_default = PNG_DEFAULT_sRGB;
+
+ /* Call png_set_alpha_mode to set the default for the input gamma; the
+ * output gamma is set by a second call below.
+ */
+ png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, input_gamma_default);
+ }
+
+ if (linear)
+ {
+ /* If there *is* an alpha channel in the input it must be multiplied
+ * out; use PNG_ALPHA_STANDARD, otherwise just use PNG_ALPHA_PNG.
+ */
+ if (base_format & PNG_FORMAT_FLAG_ALPHA)
+ mode = PNG_ALPHA_STANDARD; /* associated alpha */
+
+ else
+ mode = PNG_ALPHA_PNG;
+
+ output_gamma = PNG_GAMMA_LINEAR;
+ }
+
+ else
+ {
+ mode = PNG_ALPHA_PNG;
+ output_gamma = PNG_DEFAULT_sRGB;
+ }
+
+ /* If 'do_local_background' is set check for the presence of gamma
+ * correction; this is part of the work-round for the libpng bug
+ * described above.
+ *
+ * TODO: fix libpng and remove this.
+ */
+ if (do_local_background)
+ {
+ png_fixed_point gtest;
+
+ /* This is 'png_gamma_threshold' from pngrtran.c; the test used for
+ * gamma correction, the screen gamma hasn't been set on png_struct
+ * yet; it's set below. png_struct::gamma, however, is set to the
+ * final value.
+ */
+ if (png_muldiv(>est, output_gamma, png_ptr->colorspace.gamma,
+ PNG_FP_1) && !png_gamma_significant(gtest))
+ do_local_background = 0;
+
+ else if (mode == PNG_ALPHA_STANDARD)
+ {
+ do_local_background = 2/*required*/;
+ mode = PNG_ALPHA_PNG; /* prevent libpng doing it */
+ }
+
+ /* else leave as 1 for the checks below */
+ }
+
+ /* If the bit-depth changes then handle that here. */
+ if (change & PNG_FORMAT_FLAG_LINEAR)
+ {
+ if (linear /*16-bit output*/)
+ png_set_expand_16(png_ptr);
+
+ else /* 8-bit output */
+ png_set_scale_16(png_ptr);
+
+ change &= ~PNG_FORMAT_FLAG_LINEAR;
+ }
+
+ /* Now the background/alpha channel changes. */
+ if (change & PNG_FORMAT_FLAG_ALPHA)
+ {
+ /* Removing an alpha channel requires composition for the 8-bit
+ * formats; for the 16-bit it is already done, above, by the
+ * pre-multiplication and the channel just needs to be stripped.
+ */
+ if (base_format & PNG_FORMAT_FLAG_ALPHA)
+ {
+ /* If RGB->gray is happening the alpha channel must be left and the
+ * operation completed locally.
+ *
+ * TODO: fix libpng and remove this.
+ */
+ if (do_local_background)
+ do_local_background = 2/*required*/;
+
+ /* 16-bit output: just remove the channel */
+ else if (linear) /* compose on black (well, pre-multiply) */
+ png_set_strip_alpha(png_ptr);
+
+ /* 8-bit output: do an appropriate compose */
+ else if (display->background != NULL)
+ {
+ png_color_16 c;
+
+ c.index = 0; /*unused*/
+ c.red = display->background->red;
+ c.green = display->background->green;
+ c.blue = display->background->blue;
+ c.gray = display->background->green;
+
+ /* This is always an 8-bit sRGB value, using the 'green' channel
+ * for gray is much better than calculating the luminance here;
+ * we can get off-by-one errors in that calculation relative to
+ * the app expectations and that will show up in transparent
+ * pixels.
+ */
+ png_set_background_fixed(png_ptr, &c,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
+ 0/*gamma: not used*/);
+ }
+
+ else /* compose on row: implemented below. */
+ {
+ do_local_compose = 1;
+ /* This leaves the alpha channel in the output, so it has to be
+ * removed by the code below. Set the encoding to the 'OPTIMIZE'
+ * one so the code only has to hack on the pixels that require
+ * composition.
+ */
+ mode = PNG_ALPHA_OPTIMIZED;
+ }
+ }
+
+ else /* output needs an alpha channel */
+ {
+ /* This is tricky because it happens before the swap operation has
+ * been accomplished; however, the swap does *not* swap the added
+ * alpha channel (weird API), so it must be added in the correct
+ * place.
+ */
+ png_uint_32 filler; /* opaque filler */
+ int where;
+
+ if (linear)
+ filler = 65535;
+
+ else
+ filler = 255;
+
+# ifdef PNG_FORMAT_AFIRST_SUPPORTED
+ if (format & PNG_FORMAT_FLAG_AFIRST)
+ {
+ where = PNG_FILLER_BEFORE;
+ change &= ~PNG_FORMAT_FLAG_AFIRST;
+ }
+
+ else
+# endif
+ where = PNG_FILLER_AFTER;
+
+ png_set_add_alpha(png_ptr, filler, where);
+ }
+
+ /* This stops the (irrelevant) call to swap_alpha below. */
+ change &= ~PNG_FORMAT_FLAG_ALPHA;
+ }
+
+ /* Now set the alpha mode correctly; this is always done, even if there is
+ * no alpha channel in either the input or the output because it correctly
+ * sets the output gamma.
+ */
+ png_set_alpha_mode_fixed(png_ptr, mode, output_gamma);
+
+# ifdef PNG_FORMAT_BGR_SUPPORTED
+ if (change & PNG_FORMAT_FLAG_BGR)
+ {
+ /* Check only the output format; PNG is never BGR; don't do this if
+ * the output is gray, but fix up the 'format' value in that case.
+ */
+ if (format & PNG_FORMAT_FLAG_COLOR)
+ png_set_bgr(png_ptr);
+
+ else
+ format &= ~PNG_FORMAT_FLAG_BGR;
+
+ change &= ~PNG_FORMAT_FLAG_BGR;
+ }
+# endif
+
+# ifdef PNG_FORMAT_AFIRST_SUPPORTED
+ if (change & PNG_FORMAT_FLAG_AFIRST)
+ {
+ /* Only relevant if there is an alpha channel - it's particularly
+ * important to handle this correctly because do_local_compose may
+ * be set above and then libpng will keep the alpha channel for this
+ * code to remove.
+ */
+ if (format & PNG_FORMAT_FLAG_ALPHA)
+ {
+ /* Disable this if doing a local background,
+ * TODO: remove this when local background is no longer required.
+ */
+ if (do_local_background != 2)
+ png_set_swap_alpha(png_ptr);
+ }
+
+ else
+ format &= ~PNG_FORMAT_FLAG_AFIRST;
+
+ change &= ~PNG_FORMAT_FLAG_AFIRST;
+ }
+# endif
+
+ /* If the *output* is 16-bit then we need to check for a byte-swap on this
+ * architecture.
+ */
+ if (linear)
+ {
+ PNG_CONST png_uint_16 le = 0x0001;
+
+ if (*(png_const_bytep)&le)
+ png_set_swap(png_ptr);
+ }
+
+ /* If change is not now 0 some transformation is missing - error out. */
+ if (change)
+ png_error(png_ptr, "png_read_image: unsupported transformation");
+ }
+
+ PNG_SKIP_CHUNKS(png_ptr);
+
+ /* Update the 'info' structure and make sure the result is as required; first
+ * make sure to turn on the interlace handling if it will be required
+ * (because it can't be turned on *after* the call to png_read_update_info!)
+ *
+ * TODO: remove the do_local_background fixup below.
+ */
+ if (!do_local_compose && do_local_background != 2)
+ passes = png_set_interlace_handling(png_ptr);
+
+ png_read_update_info(png_ptr, info_ptr);
+
+ {
+ png_uint_32 info_format = 0;
+
+ if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ info_format |= PNG_FORMAT_FLAG_COLOR;
+
+ if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ /* do_local_compose removes this channel below. */
+ if (!do_local_compose)
+ {
+ /* do_local_background does the same if required. */
+ if (do_local_background != 2 ||
+ (format & PNG_FORMAT_FLAG_ALPHA) != 0)
+ info_format |= PNG_FORMAT_FLAG_ALPHA;
+ }
+ }
+
+ else if (do_local_compose) /* internal error */
+ png_error(png_ptr, "png_image_read: alpha channel lost");
+
+ if (info_ptr->bit_depth == 16)
+ info_format |= PNG_FORMAT_FLAG_LINEAR;
+
+# ifdef PNG_FORMAT_BGR_SUPPORTED
+ if (png_ptr->transformations & PNG_BGR)
+ info_format |= PNG_FORMAT_FLAG_BGR;
+# endif
+
+# ifdef PNG_FORMAT_AFIRST_SUPPORTED
+ if (do_local_background == 2)
+ {
+ if (format & PNG_FORMAT_FLAG_AFIRST)
+ info_format |= PNG_FORMAT_FLAG_AFIRST;
+ }
+
+ if ((png_ptr->transformations & PNG_SWAP_ALPHA) != 0 ||
+ ((png_ptr->transformations & PNG_ADD_ALPHA) != 0 &&
+ (png_ptr->flags & PNG_FLAG_FILLER_AFTER) == 0))
+ {
+ if (do_local_background == 2)
+ png_error(png_ptr, "unexpected alpha swap transformation");
+
+ info_format |= PNG_FORMAT_FLAG_AFIRST;
+ }
+# endif
+
+ /* This is actually an internal error. */
+ if (info_format != format)
+ png_error(png_ptr, "png_read_image: invalid transformations");
+ }
+
+ /* Now read the rows. If do_local_compose is set then it is necessary to use
+ * a local row buffer. The output will be GA, RGBA or BGRA and must be
+ * converted to G, RGB or BGR as appropriate. The 'local_row' member of the
+ * display acts as a flag.
+ */
+ {
+ png_voidp first_row = display->buffer;
+ ptrdiff_t row_bytes = display->row_stride;
+
+ if (linear)
+ row_bytes *= 2;
+
+ /* The following expression is designed to work correctly whether it gives
+ * a signed or an unsigned result.
+ */
+ if (row_bytes < 0)
+ {
+ char *ptr = png_voidcast(char*, first_row);
+ ptr += (image->height-1) * (-row_bytes);
+ first_row = png_voidcast(png_voidp, ptr);
+ }
+
+ display->first_row = first_row;
+ display->row_bytes = row_bytes;
+ }
+
+ if (do_local_compose)
+ {
+ int result;
+ png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr));
+
+ display->local_row = row;
+ result = png_safe_execute(image, png_image_read_composite, display);
+ display->local_row = NULL;
+ png_free(png_ptr, row);
+
+ return result;
+ }
+
+ else if (do_local_background == 2)
+ {
+ int result;
+ png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr));
+
+ display->local_row = row;
+ result = png_safe_execute(image, png_image_read_background, display);
+ display->local_row = NULL;
+ png_free(png_ptr, row);
+
+ return result;
+ }
+
+ else
+ {
+ png_alloc_size_t row_bytes = display->row_bytes;
+
+ while (--passes >= 0)
+ {
+ png_uint_32 y = image->height;
+ png_bytep row = png_voidcast(png_bytep, display->first_row);
+
+ while (y-- > 0)
+ {
+ png_read_row(png_ptr, row, NULL);
+ row += row_bytes;
+ }
+ }
+
+ return 1;
+ }
+}
+
+int PNGAPI
+png_image_finish_read(png_imagep image, png_const_colorp background,
+ void *buffer, png_int_32 row_stride, void *colormap)
+{
+ if (image != NULL && image->version == PNG_IMAGE_VERSION)
+ {
+ png_uint_32 check;
+
+ if (row_stride == 0)
+ row_stride = PNG_IMAGE_ROW_STRIDE(*image);
+
+ if (row_stride < 0)
+ check = -row_stride;
+
+ else
+ check = row_stride;
+
+ if (image->opaque != NULL && buffer != NULL &&
+ check >= PNG_IMAGE_ROW_STRIDE(*image))
+ {
+ if ((image->format & PNG_FORMAT_FLAG_COLORMAP) == 0 ||
+ (image->colormap_entries > 0 && colormap != NULL))
+ {
+ int result;
+ png_image_read_control display;
+
+ memset(&display, 0, (sizeof display));
+ display.image = image;
+ display.buffer = buffer;
+ display.row_stride = row_stride;
+ display.colormap = colormap;
+ display.background = background;
+ display.local_row = NULL;
+
+ /* Choose the correct 'end' routine; for the color-map case all the
+ * setup has already been done.
+ */
+ if (image->format & PNG_FORMAT_FLAG_COLORMAP)
+ result =
+ png_safe_execute(image, png_image_read_colormap, &display) &&
+ png_safe_execute(image, png_image_read_colormapped, &display);
+
+ else
+ result =
+ png_safe_execute(image, png_image_read_direct, &display);
+
+ png_image_free(image);
+ return result;
+ }
+
+ else
+ return png_image_error(image,
+ "png_image_finish_read[color-map]: no color-map");
+ }
+
+ else
+ return png_image_error(image,
+ "png_image_finish_read: invalid argument");
+ }
+
+ else if (image != NULL)
+ return png_image_error(image,
+ "png_image_finish_read: damaged PNG_IMAGE_VERSION");
+
+ return 0;
+}
+
+#endif /* PNG_SIMPLIFIED_READ_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrio.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrio.c
new file mode 100644
index 0000000..5f927d1
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrio.c
@@ -0,0 +1,119 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngrio.c - functions for data input
+ *
+ * Last changed in libpng 1.6.0 [February 14, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all input. Users who need
+ * special handling are expected to write a function that has the same
+ * arguments as this and performs a similar function, but that possibly
+ * has a different input method. Note that you shouldn't change this
+ * function, but rather write a replacement function and then make
+ * libpng use it at run time with png_set_read_fn(...).
+ */
+
+#include "pngpriv.h"
+
+#ifdef PNG_READ_SUPPORTED
+
+/* Read the data from whatever input you are using. The default routine
+ * reads from a file pointer. Note that this routine sometimes gets called
+ * with very small lengths, so you should implement some kind of simple
+ * buffering if you are using unbuffered reads. This should never be asked
+ * to read more then 64K on a 16 bit machine.
+ */
+void /* PRIVATE */
+png_read_data(png_structrp png_ptr, png_bytep data, png_size_t length)
+{
+ png_debug1(4, "reading %d bytes", (int)length);
+
+ if (png_ptr->read_data_fn != NULL)
+ (*(png_ptr->read_data_fn))(png_ptr, data, length);
+
+ else
+ png_error(png_ptr, "Call to NULL read function");
+}
+
+#ifdef PNG_STDIO_SUPPORTED
+/* This is the function that does the actual reading of data. If you are
+ * not reading from a standard C stream, you should create a replacement
+ * read_data function and use it at run time with png_set_read_fn(), rather
+ * than changing the library.
+ */
+void PNGCBAPI
+png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_size_t check;
+
+ if (png_ptr == NULL)
+ return;
+
+ /* fread() returns 0 on error, so it is OK to store this in a png_size_t
+ * instead of an int, which is what fread() actually returns.
+ */
+ check = fread(data, 1, length, png_voidcast(png_FILE_p, png_ptr->io_ptr));
+
+ if (check != length)
+ png_error(png_ptr, "Read Error");
+}
+#endif
+
+/* This function allows the application to supply a new input function
+ * for libpng if standard C streams aren't being used.
+ *
+ * This function takes as its arguments:
+ *
+ * png_ptr - pointer to a png input data structure
+ *
+ * io_ptr - pointer to user supplied structure containing info about
+ * the input functions. May be NULL.
+ *
+ * read_data_fn - pointer to a new input function that takes as its
+ * arguments a pointer to a png_struct, a pointer to
+ * a location where input data can be stored, and a 32-bit
+ * unsigned int that is the number of bytes to be read.
+ * To exit and output any fatal error messages the new write
+ * function should call png_error(png_ptr, "Error msg").
+ * May be NULL, in which case libpng's default function will
+ * be used.
+ */
+void PNGAPI
+png_set_read_fn(png_structrp png_ptr, png_voidp io_ptr,
+ png_rw_ptr read_data_fn)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->io_ptr = io_ptr;
+
+#ifdef PNG_STDIO_SUPPORTED
+ if (read_data_fn != NULL)
+ png_ptr->read_data_fn = read_data_fn;
+
+ else
+ png_ptr->read_data_fn = png_default_read_data;
+#else
+ png_ptr->read_data_fn = read_data_fn;
+#endif
+
+ /* It is an error to write to a read device */
+ if (png_ptr->write_data_fn != NULL)
+ {
+ png_ptr->write_data_fn = NULL;
+ png_warning(png_ptr,
+ "Can't set both read_data_fn and write_data_fn in the"
+ " same structure");
+ }
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+ png_ptr->output_flush_fn = NULL;
+#endif
+}
+#endif /* PNG_READ_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrtran.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrtran.c
new file mode 100644
index 0000000..4a279be
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrtran.c
@@ -0,0 +1,5104 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngrtran.c - transforms the data in a row for PNG readers
+ *
+ * Last changed in libpng 1.6.2 [April 25, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file contains functions optionally called by an application
+ * in order to tell libpng how to handle data when reading a PNG.
+ * Transformations that are used in both reading and writing are
+ * in pngtrans.c.
+ */
+
+#include "pngpriv.h"
+
+#ifdef PNG_READ_SUPPORTED
+
+/* Set the action on getting a CRC error for an ancillary or critical chunk. */
+void PNGAPI
+png_set_crc_action(png_structrp png_ptr, int crit_action, int ancil_action)
+{
+ png_debug(1, "in png_set_crc_action");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* Tell libpng how we react to CRC errors in critical chunks */
+ switch (crit_action)
+ {
+ case PNG_CRC_NO_CHANGE: /* Leave setting as is */
+ break;
+
+ case PNG_CRC_WARN_USE: /* Warn/use data */
+ png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE;
+ break;
+
+ case PNG_CRC_QUIET_USE: /* Quiet/use data */
+ png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE |
+ PNG_FLAG_CRC_CRITICAL_IGNORE;
+ break;
+
+ case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */
+ png_warning(png_ptr,
+ "Can't discard critical data on CRC error");
+ case PNG_CRC_ERROR_QUIT: /* Error/quit */
+
+ case PNG_CRC_DEFAULT:
+ default:
+ png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
+ break;
+ }
+
+ /* Tell libpng how we react to CRC errors in ancillary chunks */
+ switch (ancil_action)
+ {
+ case PNG_CRC_NO_CHANGE: /* Leave setting as is */
+ break;
+
+ case PNG_CRC_WARN_USE: /* Warn/use data */
+ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE;
+ break;
+
+ case PNG_CRC_QUIET_USE: /* Quiet/use data */
+ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE |
+ PNG_FLAG_CRC_ANCILLARY_NOWARN;
+ break;
+
+ case PNG_CRC_ERROR_QUIT: /* Error/quit */
+ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_NOWARN;
+ break;
+
+ case PNG_CRC_WARN_DISCARD: /* Warn/discard data */
+
+ case PNG_CRC_DEFAULT:
+ default:
+ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
+ break;
+ }
+}
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+/* Is it OK to set a transformation now? Only if png_start_read_image or
+ * png_read_update_info have not been called. It is not necessary for the IHDR
+ * to have been read in all cases, the parameter allows for this check too.
+ */
+static int
+png_rtran_ok(png_structrp png_ptr, int need_IHDR)
+{
+ if (png_ptr != NULL)
+ {
+ if (png_ptr->flags & PNG_FLAG_ROW_INIT)
+ png_app_error(png_ptr,
+ "invalid after png_start_read_image or png_read_update_info");
+
+ else if (need_IHDR && (png_ptr->mode & PNG_HAVE_IHDR) == 0)
+ png_app_error(png_ptr, "invalid before the PNG header has been read");
+
+ else
+ {
+ /* Turn on failure to initialize correctly for all transforms. */
+ png_ptr->flags |= PNG_FLAG_DETECT_UNINITIALIZED;
+
+ return 1; /* Ok */
+ }
+ }
+
+ return 0; /* no png_error possible! */
+}
+#endif
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+/* Handle alpha and tRNS via a background color */
+void PNGFAPI
+png_set_background_fixed(png_structrp png_ptr,
+ png_const_color_16p background_color, int background_gamma_code,
+ int need_expand, png_fixed_point background_gamma)
+{
+ png_debug(1, "in png_set_background_fixed");
+
+ if (!png_rtran_ok(png_ptr, 0) || background_color == NULL)
+ return;
+
+ if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN)
+ {
+ png_warning(png_ptr, "Application must supply a known background gamma");
+ return;
+ }
+
+ png_ptr->transformations |= PNG_COMPOSE | PNG_STRIP_ALPHA;
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+
+ png_ptr->background = *background_color;
+ png_ptr->background_gamma = background_gamma;
+ png_ptr->background_gamma_type = (png_byte)(background_gamma_code);
+ if (need_expand)
+ png_ptr->transformations |= PNG_BACKGROUND_EXPAND;
+ else
+ png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND;
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_background(png_structrp png_ptr,
+ png_const_color_16p background_color, int background_gamma_code,
+ int need_expand, double background_gamma)
+{
+ png_set_background_fixed(png_ptr, background_color, background_gamma_code,
+ need_expand, png_fixed(png_ptr, background_gamma, "png_set_background"));
+}
+# endif /* FLOATING_POINT */
+#endif /* READ_BACKGROUND */
+
+/* Scale 16-bit depth files to 8-bit depth. If both of these are set then the
+ * one that pngrtran does first (scale) happens. This is necessary to allow the
+ * TRANSFORM and API behavior to be somewhat consistent, and it's simpler.
+ */
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+void PNGAPI
+png_set_scale_16(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_scale_16");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= PNG_SCALE_16_TO_8;
+}
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+/* Chop 16-bit depth files to 8-bit depth */
+void PNGAPI
+png_set_strip_16(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_strip_16");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= PNG_16_TO_8;
+}
+#endif
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+void PNGAPI
+png_set_strip_alpha(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_strip_alpha");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= PNG_STRIP_ALPHA;
+}
+#endif
+
+#if defined(PNG_READ_ALPHA_MODE_SUPPORTED) || defined(PNG_READ_GAMMA_SUPPORTED)
+static png_fixed_point
+translate_gamma_flags(png_structrp png_ptr, png_fixed_point output_gamma,
+ int is_screen)
+{
+ /* Check for flag values. The main reason for having the old Mac value as a
+ * flag is that it is pretty near impossible to work out what the correct
+ * value is from Apple documentation - a working Mac system is needed to
+ * discover the value!
+ */
+ if (output_gamma == PNG_DEFAULT_sRGB ||
+ output_gamma == PNG_FP_1 / PNG_DEFAULT_sRGB)
+ {
+ /* If there is no sRGB support this just sets the gamma to the standard
+ * sRGB value. (This is a side effect of using this function!)
+ */
+# ifdef PNG_READ_sRGB_SUPPORTED
+ png_ptr->flags |= PNG_FLAG_ASSUME_sRGB;
+# else
+ PNG_UNUSED(png_ptr)
+# endif
+ if (is_screen)
+ output_gamma = PNG_GAMMA_sRGB;
+ else
+ output_gamma = PNG_GAMMA_sRGB_INVERSE;
+ }
+
+ else if (output_gamma == PNG_GAMMA_MAC_18 ||
+ output_gamma == PNG_FP_1 / PNG_GAMMA_MAC_18)
+ {
+ if (is_screen)
+ output_gamma = PNG_GAMMA_MAC_OLD;
+ else
+ output_gamma = PNG_GAMMA_MAC_INVERSE;
+ }
+
+ return output_gamma;
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+static png_fixed_point
+convert_gamma_value(png_structrp png_ptr, double output_gamma)
+{
+ /* The following silently ignores cases where fixed point (times 100,000)
+ * gamma values are passed to the floating point API. This is safe and it
+ * means the fixed point constants work just fine with the floating point
+ * API. The alternative would just lead to undetected errors and spurious
+ * bug reports. Negative values fail inside the _fixed API unless they
+ * correspond to the flag values.
+ */
+ if (output_gamma > 0 && output_gamma < 128)
+ output_gamma *= PNG_FP_1;
+
+ /* This preserves -1 and -2 exactly: */
+ output_gamma = floor(output_gamma + .5);
+
+ if (output_gamma > PNG_FP_MAX || output_gamma < PNG_FP_MIN)
+ png_fixed_error(png_ptr, "gamma value");
+
+ return (png_fixed_point)output_gamma;
+}
+# endif
+#endif /* READ_ALPHA_MODE || READ_GAMMA */
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+void PNGFAPI
+png_set_alpha_mode_fixed(png_structrp png_ptr, int mode,
+ png_fixed_point output_gamma)
+{
+ int compose = 0;
+ png_fixed_point file_gamma;
+
+ png_debug(1, "in png_set_alpha_mode");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/);
+
+ /* Validate the value to ensure it is in a reasonable range. The value
+ * is expected to be 1 or greater, but this range test allows for some
+ * viewing correction values. The intent is to weed out users of this API
+ * who use the inverse of the gamma value accidentally! Since some of these
+ * values are reasonable this may have to be changed.
+ */
+ if (output_gamma < 70000 || output_gamma > 300000)
+ png_error(png_ptr, "output gamma out of expected range");
+
+ /* The default file gamma is the inverse of the output gamma; the output
+ * gamma may be changed below so get the file value first:
+ */
+ file_gamma = png_reciprocal(output_gamma);
+
+ /* There are really 8 possibilities here, composed of any combination
+ * of:
+ *
+ * premultiply the color channels
+ * do not encode non-opaque pixels
+ * encode the alpha as well as the color channels
+ *
+ * The differences disappear if the input/output ('screen') gamma is 1.0,
+ * because then the encoding is a no-op and there is only the choice of
+ * premultiplying the color channels or not.
+ *
+ * png_set_alpha_mode and png_set_background interact because both use
+ * png_compose to do the work. Calling both is only useful when
+ * png_set_alpha_mode is used to set the default mode - PNG_ALPHA_PNG - along
+ * with a default gamma value. Otherwise PNG_COMPOSE must not be set.
+ */
+ switch (mode)
+ {
+ case PNG_ALPHA_PNG: /* default: png standard */
+ /* No compose, but it may be set by png_set_background! */
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+ break;
+
+ case PNG_ALPHA_ASSOCIATED: /* color channels premultiplied */
+ compose = 1;
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+ /* The output is linear: */
+ output_gamma = PNG_FP_1;
+ break;
+
+ case PNG_ALPHA_OPTIMIZED: /* associated, non-opaque pixels linear */
+ compose = 1;
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags |= PNG_FLAG_OPTIMIZE_ALPHA;
+ /* output_gamma records the encoding of opaque pixels! */
+ break;
+
+ case PNG_ALPHA_BROKEN: /* associated, non-linear, alpha encoded */
+ compose = 1;
+ png_ptr->transformations |= PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+ break;
+
+ default:
+ png_error(png_ptr, "invalid alpha mode");
+ }
+
+ /* Only set the default gamma if the file gamma has not been set (this has
+ * the side effect that the gamma in a second call to png_set_alpha_mode will
+ * be ignored.)
+ */
+ if (png_ptr->colorspace.gamma == 0)
+ {
+ png_ptr->colorspace.gamma = file_gamma;
+ png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
+ }
+
+ /* But always set the output gamma: */
+ png_ptr->screen_gamma = output_gamma;
+
+ /* Finally, if pre-multiplying, set the background fields to achieve the
+ * desired result.
+ */
+ if (compose)
+ {
+ /* And obtain alpha pre-multiplication by composing on black: */
+ memset(&png_ptr->background, 0, (sizeof png_ptr->background));
+ png_ptr->background_gamma = png_ptr->colorspace.gamma; /* just in case */
+ png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_FILE;
+ png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND;
+
+ if (png_ptr->transformations & PNG_COMPOSE)
+ png_error(png_ptr,
+ "conflicting calls to set alpha mode and background");
+
+ png_ptr->transformations |= PNG_COMPOSE;
+ }
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_alpha_mode(png_structrp png_ptr, int mode, double output_gamma)
+{
+ png_set_alpha_mode_fixed(png_ptr, mode, convert_gamma_value(png_ptr,
+ output_gamma));
+}
+# endif
+#endif
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+/* Dither file to 8-bit. Supply a palette, the current number
+ * of elements in the palette, the maximum number of elements
+ * allowed, and a histogram if possible. If the current number
+ * of colors is greater then the maximum number, the palette will be
+ * modified to fit in the maximum number. "full_quantize" indicates
+ * whether we need a quantizing cube set up for RGB images, or if we
+ * simply are reducing the number of colors in a paletted image.
+ */
+
+typedef struct png_dsort_struct
+{
+ struct png_dsort_struct * next;
+ png_byte left;
+ png_byte right;
+} png_dsort;
+typedef png_dsort * png_dsortp;
+typedef png_dsort * * png_dsortpp;
+
+void PNGAPI
+png_set_quantize(png_structrp png_ptr, png_colorp palette,
+ int num_palette, int maximum_colors, png_const_uint_16p histogram,
+ int full_quantize)
+{
+ png_debug(1, "in png_set_quantize");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= PNG_QUANTIZE;
+
+ if (!full_quantize)
+ {
+ int i;
+
+ png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(num_palette * (sizeof (png_byte))));
+ for (i = 0; i < num_palette; i++)
+ png_ptr->quantize_index[i] = (png_byte)i;
+ }
+
+ if (num_palette > maximum_colors)
+ {
+ if (histogram != NULL)
+ {
+ /* This is easy enough, just throw out the least used colors.
+ * Perhaps not the best solution, but good enough.
+ */
+
+ int i;
+
+ /* Initialize an array to sort colors */
+ png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(num_palette * (sizeof (png_byte))));
+
+ /* Initialize the quantize_sort array */
+ for (i = 0; i < num_palette; i++)
+ png_ptr->quantize_sort[i] = (png_byte)i;
+
+ /* Find the least used palette entries by starting a
+ * bubble sort, and running it until we have sorted
+ * out enough colors. Note that we don't care about
+ * sorting all the colors, just finding which are
+ * least used.
+ */
+
+ for (i = num_palette - 1; i >= maximum_colors; i--)
+ {
+ int done; /* To stop early if the list is pre-sorted */
+ int j;
+
+ done = 1;
+ for (j = 0; j < i; j++)
+ {
+ if (histogram[png_ptr->quantize_sort[j]]
+ < histogram[png_ptr->quantize_sort[j + 1]])
+ {
+ png_byte t;
+
+ t = png_ptr->quantize_sort[j];
+ png_ptr->quantize_sort[j] = png_ptr->quantize_sort[j + 1];
+ png_ptr->quantize_sort[j + 1] = t;
+ done = 0;
+ }
+ }
+
+ if (done)
+ break;
+ }
+
+ /* Swap the palette around, and set up a table, if necessary */
+ if (full_quantize)
+ {
+ int j = num_palette;
+
+ /* Put all the useful colors within the max, but don't
+ * move the others.
+ */
+ for (i = 0; i < maximum_colors; i++)
+ {
+ if ((int)png_ptr->quantize_sort[i] >= maximum_colors)
+ {
+ do
+ j--;
+ while ((int)png_ptr->quantize_sort[j] >= maximum_colors);
+
+ palette[i] = palette[j];
+ }
+ }
+ }
+ else
+ {
+ int j = num_palette;
+
+ /* Move all the used colors inside the max limit, and
+ * develop a translation table.
+ */
+ for (i = 0; i < maximum_colors; i++)
+ {
+ /* Only move the colors we need to */
+ if ((int)png_ptr->quantize_sort[i] >= maximum_colors)
+ {
+ png_color tmp_color;
+
+ do
+ j--;
+ while ((int)png_ptr->quantize_sort[j] >= maximum_colors);
+
+ tmp_color = palette[j];
+ palette[j] = palette[i];
+ palette[i] = tmp_color;
+ /* Indicate where the color went */
+ png_ptr->quantize_index[j] = (png_byte)i;
+ png_ptr->quantize_index[i] = (png_byte)j;
+ }
+ }
+
+ /* Find closest color for those colors we are not using */
+ for (i = 0; i < num_palette; i++)
+ {
+ if ((int)png_ptr->quantize_index[i] >= maximum_colors)
+ {
+ int min_d, k, min_k, d_index;
+
+ /* Find the closest color to one we threw out */
+ d_index = png_ptr->quantize_index[i];
+ min_d = PNG_COLOR_DIST(palette[d_index], palette[0]);
+ for (k = 1, min_k = 0; k < maximum_colors; k++)
+ {
+ int d;
+
+ d = PNG_COLOR_DIST(palette[d_index], palette[k]);
+
+ if (d < min_d)
+ {
+ min_d = d;
+ min_k = k;
+ }
+ }
+ /* Point to closest color */
+ png_ptr->quantize_index[i] = (png_byte)min_k;
+ }
+ }
+ }
+ png_free(png_ptr, png_ptr->quantize_sort);
+ png_ptr->quantize_sort = NULL;
+ }
+ else
+ {
+ /* This is much harder to do simply (and quickly). Perhaps
+ * we need to go through a median cut routine, but those
+ * don't always behave themselves with only a few colors
+ * as input. So we will just find the closest two colors,
+ * and throw out one of them (chosen somewhat randomly).
+ * [We don't understand this at all, so if someone wants to
+ * work on improving it, be our guest - AED, GRP]
+ */
+ int i;
+ int max_d;
+ int num_new_palette;
+ png_dsortp t;
+ png_dsortpp hash;
+
+ t = NULL;
+
+ /* Initialize palette index arrays */
+ png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(num_palette * (sizeof (png_byte))));
+ png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(num_palette * (sizeof (png_byte))));
+
+ /* Initialize the sort array */
+ for (i = 0; i < num_palette; i++)
+ {
+ png_ptr->index_to_palette[i] = (png_byte)i;
+ png_ptr->palette_to_index[i] = (png_byte)i;
+ }
+
+ hash = (png_dsortpp)png_calloc(png_ptr, (png_uint_32)(769 *
+ (sizeof (png_dsortp))));
+
+ num_new_palette = num_palette;
+
+ /* Initial wild guess at how far apart the farthest pixel
+ * pair we will be eliminating will be. Larger
+ * numbers mean more areas will be allocated, Smaller
+ * numbers run the risk of not saving enough data, and
+ * having to do this all over again.
+ *
+ * I have not done extensive checking on this number.
+ */
+ max_d = 96;
+
+ while (num_new_palette > maximum_colors)
+ {
+ for (i = 0; i < num_new_palette - 1; i++)
+ {
+ int j;
+
+ for (j = i + 1; j < num_new_palette; j++)
+ {
+ int d;
+
+ d = PNG_COLOR_DIST(palette[i], palette[j]);
+
+ if (d <= max_d)
+ {
+
+ t = (png_dsortp)png_malloc_warn(png_ptr,
+ (png_uint_32)(sizeof (png_dsort)));
+
+ if (t == NULL)
+ break;
+
+ t->next = hash[d];
+ t->left = (png_byte)i;
+ t->right = (png_byte)j;
+ hash[d] = t;
+ }
+ }
+ if (t == NULL)
+ break;
+ }
+
+ if (t != NULL)
+ for (i = 0; i <= max_d; i++)
+ {
+ if (hash[i] != NULL)
+ {
+ png_dsortp p;
+
+ for (p = hash[i]; p; p = p->next)
+ {
+ if ((int)png_ptr->index_to_palette[p->left]
+ < num_new_palette &&
+ (int)png_ptr->index_to_palette[p->right]
+ < num_new_palette)
+ {
+ int j, next_j;
+
+ if (num_new_palette & 0x01)
+ {
+ j = p->left;
+ next_j = p->right;
+ }
+ else
+ {
+ j = p->right;
+ next_j = p->left;
+ }
+
+ num_new_palette--;
+ palette[png_ptr->index_to_palette[j]]
+ = palette[num_new_palette];
+ if (!full_quantize)
+ {
+ int k;
+
+ for (k = 0; k < num_palette; k++)
+ {
+ if (png_ptr->quantize_index[k] ==
+ png_ptr->index_to_palette[j])
+ png_ptr->quantize_index[k] =
+ png_ptr->index_to_palette[next_j];
+
+ if ((int)png_ptr->quantize_index[k] ==
+ num_new_palette)
+ png_ptr->quantize_index[k] =
+ png_ptr->index_to_palette[j];
+ }
+ }
+
+ png_ptr->index_to_palette[png_ptr->palette_to_index
+ [num_new_palette]] = png_ptr->index_to_palette[j];
+
+ png_ptr->palette_to_index[png_ptr->index_to_palette[j]]
+ = png_ptr->palette_to_index[num_new_palette];
+
+ png_ptr->index_to_palette[j] =
+ (png_byte)num_new_palette;
+
+ png_ptr->palette_to_index[num_new_palette] =
+ (png_byte)j;
+ }
+ if (num_new_palette <= maximum_colors)
+ break;
+ }
+ if (num_new_palette <= maximum_colors)
+ break;
+ }
+ }
+
+ for (i = 0; i < 769; i++)
+ {
+ if (hash[i] != NULL)
+ {
+ png_dsortp p = hash[i];
+ while (p)
+ {
+ t = p->next;
+ png_free(png_ptr, p);
+ p = t;
+ }
+ }
+ hash[i] = 0;
+ }
+ max_d += 96;
+ }
+ png_free(png_ptr, hash);
+ png_free(png_ptr, png_ptr->palette_to_index);
+ png_free(png_ptr, png_ptr->index_to_palette);
+ png_ptr->palette_to_index = NULL;
+ png_ptr->index_to_palette = NULL;
+ }
+ num_palette = maximum_colors;
+ }
+ if (png_ptr->palette == NULL)
+ {
+ png_ptr->palette = palette;
+ }
+ png_ptr->num_palette = (png_uint_16)num_palette;
+
+ if (full_quantize)
+ {
+ int i;
+ png_bytep distance;
+ int total_bits = PNG_QUANTIZE_RED_BITS + PNG_QUANTIZE_GREEN_BITS +
+ PNG_QUANTIZE_BLUE_BITS;
+ int num_red = (1 << PNG_QUANTIZE_RED_BITS);
+ int num_green = (1 << PNG_QUANTIZE_GREEN_BITS);
+ int num_blue = (1 << PNG_QUANTIZE_BLUE_BITS);
+ png_size_t num_entries = ((png_size_t)1 << total_bits);
+
+ png_ptr->palette_lookup = (png_bytep)png_calloc(png_ptr,
+ (png_uint_32)(num_entries * (sizeof (png_byte))));
+
+ distance = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_entries *
+ (sizeof (png_byte))));
+
+ memset(distance, 0xff, num_entries * (sizeof (png_byte)));
+
+ for (i = 0; i < num_palette; i++)
+ {
+ int ir, ig, ib;
+ int r = (palette[i].red >> (8 - PNG_QUANTIZE_RED_BITS));
+ int g = (palette[i].green >> (8 - PNG_QUANTIZE_GREEN_BITS));
+ int b = (palette[i].blue >> (8 - PNG_QUANTIZE_BLUE_BITS));
+
+ for (ir = 0; ir < num_red; ir++)
+ {
+ /* int dr = abs(ir - r); */
+ int dr = ((ir > r) ? ir - r : r - ir);
+ int index_r = (ir << (PNG_QUANTIZE_BLUE_BITS +
+ PNG_QUANTIZE_GREEN_BITS));
+
+ for (ig = 0; ig < num_green; ig++)
+ {
+ /* int dg = abs(ig - g); */
+ int dg = ((ig > g) ? ig - g : g - ig);
+ int dt = dr + dg;
+ int dm = ((dr > dg) ? dr : dg);
+ int index_g = index_r | (ig << PNG_QUANTIZE_BLUE_BITS);
+
+ for (ib = 0; ib < num_blue; ib++)
+ {
+ int d_index = index_g | ib;
+ /* int db = abs(ib - b); */
+ int db = ((ib > b) ? ib - b : b - ib);
+ int dmax = ((dm > db) ? dm : db);
+ int d = dmax + dt + db;
+
+ if (d < (int)distance[d_index])
+ {
+ distance[d_index] = (png_byte)d;
+ png_ptr->palette_lookup[d_index] = (png_byte)i;
+ }
+ }
+ }
+ }
+ }
+
+ png_free(png_ptr, distance);
+ }
+}
+#endif /* PNG_READ_QUANTIZE_SUPPORTED */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+void PNGFAPI
+png_set_gamma_fixed(png_structrp png_ptr, png_fixed_point scrn_gamma,
+ png_fixed_point file_gamma)
+{
+ png_debug(1, "in png_set_gamma_fixed");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ /* New in libpng-1.5.4 - reserve particular negative values as flags. */
+ scrn_gamma = translate_gamma_flags(png_ptr, scrn_gamma, 1/*screen*/);
+ file_gamma = translate_gamma_flags(png_ptr, file_gamma, 0/*file*/);
+
+ /* Checking the gamma values for being >0 was added in 1.5.4 along with the
+ * premultiplied alpha support; this actually hides an undocumented feature
+ * of the previous implementation which allowed gamma processing to be
+ * disabled in background handling. There is no evidence (so far) that this
+ * was being used; however, png_set_background itself accepted and must still
+ * accept '0' for the gamma value it takes, because it isn't always used.
+ *
+ * Since this is an API change (albeit a very minor one that removes an
+ * undocumented API feature) the following checks were only enabled in
+ * libpng-1.6.0.
+ */
+ if (file_gamma <= 0)
+ png_error(png_ptr, "invalid file gamma in png_set_gamma");
+
+ if (scrn_gamma <= 0)
+ png_error(png_ptr, "invalid screen gamma in png_set_gamma");
+
+ /* Set the gamma values unconditionally - this overrides the value in the PNG
+ * file if a gAMA chunk was present. png_set_alpha_mode provides a
+ * different, easier, way to default the file gamma.
+ */
+ png_ptr->colorspace.gamma = file_gamma;
+ png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
+ png_ptr->screen_gamma = scrn_gamma;
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_gamma(png_structrp png_ptr, double scrn_gamma, double file_gamma)
+{
+ png_set_gamma_fixed(png_ptr, convert_gamma_value(png_ptr, scrn_gamma),
+ convert_gamma_value(png_ptr, file_gamma));
+}
+# endif /* FLOATING_POINT_SUPPORTED */
+#endif /* READ_GAMMA */
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* Expand paletted images to RGB, expand grayscale images of
+ * less than 8-bit depth to 8-bit depth, and expand tRNS chunks
+ * to alpha channels.
+ */
+void PNGAPI
+png_set_expand(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_expand");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
+}
+
+/* GRR 19990627: the following three functions currently are identical
+ * to png_set_expand(). However, it is entirely reasonable that someone
+ * might wish to expand an indexed image to RGB but *not* expand a single,
+ * fully transparent palette entry to a full alpha channel--perhaps instead
+ * convert tRNS to the grayscale/RGB format (16-bit RGB value), or replace
+ * the transparent color with a particular RGB value, or drop tRNS entirely.
+ * IOW, a future version of the library may make the transformations flag
+ * a bit more fine-grained, with separate bits for each of these three
+ * functions.
+ *
+ * More to the point, these functions make it obvious what libpng will be
+ * doing, whereas "expand" can (and does) mean any number of things.
+ *
+ * GRP 20060307: In libpng-1.2.9, png_set_gray_1_2_4_to_8() was modified
+ * to expand only the sample depth but not to expand the tRNS to alpha
+ * and its name was changed to png_set_expand_gray_1_2_4_to_8().
+ */
+
+/* Expand paletted images to RGB. */
+void PNGAPI
+png_set_palette_to_rgb(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_palette_to_rgb");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
+}
+
+/* Expand grayscale images of less than 8-bit depth to 8 bits. */
+void PNGAPI
+png_set_expand_gray_1_2_4_to_8(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_expand_gray_1_2_4_to_8");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= PNG_EXPAND;
+}
+
+/* Expand tRNS chunks to alpha channels. */
+void PNGAPI
+png_set_tRNS_to_alpha(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_tRNS_to_alpha");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
+}
+#endif /* defined(PNG_READ_EXPAND_SUPPORTED) */
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+/* Expand to 16-bit channels, expand the tRNS chunk too (because otherwise
+ * it may not work correctly.)
+ */
+void PNGAPI
+png_set_expand_16(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_expand_16");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ png_ptr->transformations |= (PNG_EXPAND_16 | PNG_EXPAND | PNG_EXPAND_tRNS);
+}
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+void PNGAPI
+png_set_gray_to_rgb(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_gray_to_rgb");
+
+ if (!png_rtran_ok(png_ptr, 0))
+ return;
+
+ /* Because rgb must be 8 bits or more: */
+ png_set_expand_gray_1_2_4_to_8(png_ptr);
+ png_ptr->transformations |= PNG_GRAY_TO_RGB;
+}
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+void PNGFAPI
+png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
+ png_fixed_point red, png_fixed_point green)
+{
+ png_debug(1, "in png_set_rgb_to_gray");
+
+ /* Need the IHDR here because of the check on color_type below. */
+ /* TODO: fix this */
+ if (!png_rtran_ok(png_ptr, 1))
+ return;
+
+ switch(error_action)
+ {
+ case PNG_ERROR_ACTION_NONE:
+ png_ptr->transformations |= PNG_RGB_TO_GRAY;
+ break;
+
+ case PNG_ERROR_ACTION_WARN:
+ png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN;
+ break;
+
+ case PNG_ERROR_ACTION_ERROR:
+ png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR;
+ break;
+
+ default:
+ png_error(png_ptr, "invalid error action to rgb_to_gray");
+ break;
+ }
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ png_ptr->transformations |= PNG_EXPAND;
+#else
+ {
+ /* Make this an error in 1.6 because otherwise the application may assume
+ * that it just worked and get a memory overwrite.
+ */
+ png_error(png_ptr,
+ "Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED");
+
+ /* png_ptr->transformations &= ~PNG_RGB_TO_GRAY; */
+ }
+#endif
+ {
+ if (red >= 0 && green >= 0 && red + green <= PNG_FP_1)
+ {
+ png_uint_16 red_int, green_int;
+
+ /* NOTE: this calculation does not round, but this behavior is retained
+ * for consistency, the inaccuracy is very small. The code here always
+ * overwrites the coefficients, regardless of whether they have been
+ * defaulted or set already.
+ */
+ red_int = (png_uint_16)(((png_uint_32)red*32768)/100000);
+ green_int = (png_uint_16)(((png_uint_32)green*32768)/100000);
+
+ png_ptr->rgb_to_gray_red_coeff = red_int;
+ png_ptr->rgb_to_gray_green_coeff = green_int;
+ png_ptr->rgb_to_gray_coefficients_set = 1;
+ }
+
+ else
+ {
+ if (red >= 0 && green >= 0)
+ png_app_warning(png_ptr,
+ "ignoring out of range rgb_to_gray coefficients");
+
+ /* Use the defaults, from the cHRM chunk if set, else the historical
+ * values which are close to the sRGB/HDTV/ITU-Rec 709 values. See
+ * png_do_rgb_to_gray for more discussion of the values. In this case
+ * the coefficients are not marked as 'set' and are not overwritten if
+ * something has already provided a default.
+ */
+ if (png_ptr->rgb_to_gray_red_coeff == 0 &&
+ png_ptr->rgb_to_gray_green_coeff == 0)
+ {
+ png_ptr->rgb_to_gray_red_coeff = 6968;
+ png_ptr->rgb_to_gray_green_coeff = 23434;
+ /* png_ptr->rgb_to_gray_blue_coeff = 2366; */
+ }
+ }
+ }
+}
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+/* Convert a RGB image to a grayscale of the same width. This allows us,
+ * for example, to convert a 24 bpp RGB image into an 8 bpp grayscale image.
+ */
+
+void PNGAPI
+png_set_rgb_to_gray(png_structrp png_ptr, int error_action, double red,
+ double green)
+{
+ png_set_rgb_to_gray_fixed(png_ptr, error_action,
+ png_fixed(png_ptr, red, "rgb to gray red coefficient"),
+ png_fixed(png_ptr, green, "rgb to gray green coefficient"));
+}
+#endif /* FLOATING POINT */
+
+#endif /* RGB_TO_GRAY */
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+void PNGAPI
+png_set_read_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr
+ read_user_transform_fn)
+{
+ png_debug(1, "in png_set_read_user_transform_fn");
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ png_ptr->transformations |= PNG_USER_TRANSFORM;
+ png_ptr->read_user_transform_fn = read_user_transform_fn;
+#endif
+}
+#endif
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* In the case of gamma transformations only do transformations on images where
+ * the [file] gamma and screen_gamma are not close reciprocals, otherwise it
+ * slows things down slightly, and also needlessly introduces small errors.
+ */
+static int /* PRIVATE */
+png_gamma_threshold(png_fixed_point screen_gamma, png_fixed_point file_gamma)
+{
+ /* PNG_GAMMA_THRESHOLD is the threshold for performing gamma
+ * correction as a difference of the overall transform from 1.0
+ *
+ * We want to compare the threshold with s*f - 1, if we get
+ * overflow here it is because of wacky gamma values so we
+ * turn on processing anyway.
+ */
+ png_fixed_point gtest;
+ return !png_muldiv(>est, screen_gamma, file_gamma, PNG_FP_1) ||
+ png_gamma_significant(gtest);
+}
+#endif
+
+/* Initialize everything needed for the read. This includes modifying
+ * the palette.
+ */
+
+/*For the moment 'png_init_palette_transformations' and
+ * 'png_init_rgb_transformations' only do some flag canceling optimizations.
+ * The intent is that these two routines should have palette or rgb operations
+ * extracted from 'png_init_read_transformations'.
+ */
+static void /* PRIVATE */
+png_init_palette_transformations(png_structrp png_ptr)
+{
+ /* Called to handle the (input) palette case. In png_do_read_transformations
+ * the first step is to expand the palette if requested, so this code must
+ * take care to only make changes that are invariant with respect to the
+ * palette expansion, or only do them if there is no expansion.
+ *
+ * STRIP_ALPHA has already been handled in the caller (by setting num_trans
+ * to 0.)
+ */
+ int input_has_alpha = 0;
+ int input_has_transparency = 0;
+
+ if (png_ptr->num_trans > 0)
+ {
+ int i;
+
+ /* Ignore if all the entries are opaque (unlikely!) */
+ for (i=0; i<png_ptr->num_trans; ++i)
+ if (png_ptr->trans_alpha[i] == 255)
+ continue;
+ else if (png_ptr->trans_alpha[i] == 0)
+ input_has_transparency = 1;
+ else
+ input_has_alpha = 1;
+ }
+
+ /* If no alpha we can optimize. */
+ if (!input_has_alpha)
+ {
+ /* Any alpha means background and associative alpha processing is
+ * required, however if the alpha is 0 or 1 throughout OPTIIMIZE_ALPHA
+ * and ENCODE_ALPHA are irrelevant.
+ */
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+
+ if (!input_has_transparency)
+ png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND);
+ }
+
+#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* png_set_background handling - deals with the complexity of whether the
+ * background color is in the file format or the screen format in the case
+ * where an 'expand' will happen.
+ */
+
+ /* The following code cannot be entered in the alpha pre-multiplication case
+ * because PNG_BACKGROUND_EXPAND is cancelled below.
+ */
+ if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ (png_ptr->transformations & PNG_EXPAND))
+ {
+ {
+ png_ptr->background.red =
+ png_ptr->palette[png_ptr->background.index].red;
+ png_ptr->background.green =
+ png_ptr->palette[png_ptr->background.index].green;
+ png_ptr->background.blue =
+ png_ptr->palette[png_ptr->background.index].blue;
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_ALPHA)
+ {
+ if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
+ {
+ /* Invert the alpha channel (in tRNS) unless the pixels are
+ * going to be expanded, in which case leave it for later
+ */
+ int i, istop = png_ptr->num_trans;
+
+ for (i=0; i<istop; i++)
+ png_ptr->trans_alpha[i] = (png_byte)(255 -
+ png_ptr->trans_alpha[i]);
+ }
+ }
+#endif /* PNG_READ_INVERT_ALPHA_SUPPORTED */
+ }
+ } /* background expand and (therefore) no alpha association. */
+#endif /* PNG_READ_EXPAND_SUPPORTED && PNG_READ_BACKGROUND_SUPPORTED */
+}
+
+static void /* PRIVATE */
+png_init_rgb_transformations(png_structrp png_ptr)
+{
+ /* Added to libpng-1.5.4: check the color type to determine whether there
+ * is any alpha or transparency in the image and simply cancel the
+ * background and alpha mode stuff if there isn't.
+ */
+ int input_has_alpha = (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0;
+ int input_has_transparency = png_ptr->num_trans > 0;
+
+ /* If no alpha we can optimize. */
+ if (!input_has_alpha)
+ {
+ /* Any alpha means background and associative alpha processing is
+ * required, however if the alpha is 0 or 1 throughout OPTIIMIZE_ALPHA
+ * and ENCODE_ALPHA are irrelevant.
+ */
+# ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+# endif
+
+ if (!input_has_transparency)
+ png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND);
+ }
+
+#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* png_set_background handling - deals with the complexity of whether the
+ * background color is in the file format or the screen format in the case
+ * where an 'expand' will happen.
+ */
+
+ /* The following code cannot be entered in the alpha pre-multiplication case
+ * because PNG_BACKGROUND_EXPAND is cancelled below.
+ */
+ if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ (png_ptr->transformations & PNG_EXPAND) &&
+ !(png_ptr->color_type & PNG_COLOR_MASK_COLOR))
+ /* i.e., GRAY or GRAY_ALPHA */
+ {
+ {
+ /* Expand background and tRNS chunks */
+ int gray = png_ptr->background.gray;
+ int trans_gray = png_ptr->trans_color.gray;
+
+ switch (png_ptr->bit_depth)
+ {
+ case 1:
+ gray *= 0xff;
+ trans_gray *= 0xff;
+ break;
+
+ case 2:
+ gray *= 0x55;
+ trans_gray *= 0x55;
+ break;
+
+ case 4:
+ gray *= 0x11;
+ trans_gray *= 0x11;
+ break;
+
+ default:
+
+ case 8:
+ /* FALL THROUGH (Already 8 bits) */
+
+ case 16:
+ /* Already a full 16 bits */
+ break;
+ }
+
+ png_ptr->background.red = png_ptr->background.green =
+ png_ptr->background.blue = (png_uint_16)gray;
+
+ if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
+ {
+ png_ptr->trans_color.red = png_ptr->trans_color.green =
+ png_ptr->trans_color.blue = (png_uint_16)trans_gray;
+ }
+ }
+ } /* background expand and (therefore) no alpha association. */
+#endif /* PNG_READ_EXPAND_SUPPORTED && PNG_READ_BACKGROUND_SUPPORTED */
+}
+
+void /* PRIVATE */
+png_init_read_transformations(png_structrp png_ptr)
+{
+ png_debug(1, "in png_init_read_transformations");
+
+ /* This internal function is called from png_read_start_row in pngrutil.c
+ * and it is called before the 'rowbytes' calculation is done, so the code
+ * in here can change or update the transformations flags.
+ *
+ * First do updates that do not depend on the details of the PNG image data
+ * being processed.
+ */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ /* Prior to 1.5.4 these tests were performed from png_set_gamma, 1.5.4 adds
+ * png_set_alpha_mode and this is another source for a default file gamma so
+ * the test needs to be performed later - here. In addition prior to 1.5.4
+ * the tests were repeated for the PALETTE color type here - this is no
+ * longer necessary (and doesn't seem to have been necessary before.)
+ */
+ {
+ /* The following temporary indicates if overall gamma correction is
+ * required.
+ */
+ int gamma_correction = 0;
+
+ if (png_ptr->colorspace.gamma != 0) /* has been set */
+ {
+ if (png_ptr->screen_gamma != 0) /* screen set too */
+ gamma_correction = png_gamma_threshold(png_ptr->colorspace.gamma,
+ png_ptr->screen_gamma);
+
+ else
+ /* Assume the output matches the input; a long time default behavior
+ * of libpng, although the standard has nothing to say about this.
+ */
+ png_ptr->screen_gamma = png_reciprocal(png_ptr->colorspace.gamma);
+ }
+
+ else if (png_ptr->screen_gamma != 0)
+ /* The converse - assume the file matches the screen, note that this
+ * perhaps undesireable default can (from 1.5.4) be changed by calling
+ * png_set_alpha_mode (even if the alpha handling mode isn't required
+ * or isn't changed from the default.)
+ */
+ png_ptr->colorspace.gamma = png_reciprocal(png_ptr->screen_gamma);
+
+ else /* neither are set */
+ /* Just in case the following prevents any processing - file and screen
+ * are both assumed to be linear and there is no way to introduce a
+ * third gamma value other than png_set_background with 'UNIQUE', and,
+ * prior to 1.5.4
+ */
+ png_ptr->screen_gamma = png_ptr->colorspace.gamma = PNG_FP_1;
+
+ /* We have a gamma value now. */
+ png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
+
+ /* Now turn the gamma transformation on or off as appropriate. Notice
+ * that PNG_GAMMA just refers to the file->screen correction. Alpha
+ * composition may independently cause gamma correction because it needs
+ * linear data (e.g. if the file has a gAMA chunk but the screen gamma
+ * hasn't been specified.) In any case this flag may get turned off in
+ * the code immediately below if the transform can be handled outside the
+ * row loop.
+ */
+ if (gamma_correction)
+ png_ptr->transformations |= PNG_GAMMA;
+
+ else
+ png_ptr->transformations &= ~PNG_GAMMA;
+ }
+#endif
+
+ /* Certain transformations have the effect of preventing other
+ * transformations that happen afterward in png_do_read_transformations,
+ * resolve the interdependencies here. From the code of
+ * png_do_read_transformations the order is:
+ *
+ * 1) PNG_EXPAND (including PNG_EXPAND_tRNS)
+ * 2) PNG_STRIP_ALPHA (if no compose)
+ * 3) PNG_RGB_TO_GRAY
+ * 4) PNG_GRAY_TO_RGB iff !PNG_BACKGROUND_IS_GRAY
+ * 5) PNG_COMPOSE
+ * 6) PNG_GAMMA
+ * 7) PNG_STRIP_ALPHA (if compose)
+ * 8) PNG_ENCODE_ALPHA
+ * 9) PNG_SCALE_16_TO_8
+ * 10) PNG_16_TO_8
+ * 11) PNG_QUANTIZE (converts to palette)
+ * 12) PNG_EXPAND_16
+ * 13) PNG_GRAY_TO_RGB iff PNG_BACKGROUND_IS_GRAY
+ * 14) PNG_INVERT_MONO
+ * 15) PNG_SHIFT
+ * 16) PNG_PACK
+ * 17) PNG_BGR
+ * 18) PNG_PACKSWAP
+ * 19) PNG_FILLER (includes PNG_ADD_ALPHA)
+ * 20) PNG_INVERT_ALPHA
+ * 21) PNG_SWAP_ALPHA
+ * 22) PNG_SWAP_BYTES
+ * 23) PNG_USER_TRANSFORM [must be last]
+ */
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
+ !(png_ptr->transformations & PNG_COMPOSE))
+ {
+ /* Stripping the alpha channel happens immediately after the 'expand'
+ * transformations, before all other transformation, so it cancels out
+ * the alpha handling. It has the side effect negating the effect of
+ * PNG_EXPAND_tRNS too:
+ */
+ png_ptr->transformations &= ~(PNG_BACKGROUND_EXPAND | PNG_ENCODE_ALPHA |
+ PNG_EXPAND_tRNS);
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+
+ /* Kill the tRNS chunk itself too. Prior to 1.5.4 this did not happen
+ * so transparency information would remain just so long as it wasn't
+ * expanded. This produces unexpected API changes if the set of things
+ * that do PNG_EXPAND_tRNS changes (perfectly possible given the
+ * documentation - which says ask for what you want, accept what you
+ * get.) This makes the behavior consistent from 1.5.4:
+ */
+ png_ptr->num_trans = 0;
+ }
+#endif /* STRIP_ALPHA supported, no COMPOSE */
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ /* If the screen gamma is about 1.0 then the OPTIMIZE_ALPHA and ENCODE_ALPHA
+ * settings will have no effect.
+ */
+ if (!png_gamma_significant(png_ptr->screen_gamma))
+ {
+ png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
+ png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
+ }
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ /* Make sure the coefficients for the rgb to gray conversion are set
+ * appropriately.
+ */
+ if (png_ptr->transformations & PNG_RGB_TO_GRAY)
+ png_colorspace_set_rgb_coefficients(png_ptr);
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* Detect gray background and attempt to enable optimization for
+ * gray --> RGB case.
+ *
+ * Note: if PNG_BACKGROUND_EXPAND is set and color_type is either RGB or
+ * RGB_ALPHA (in which case need_expand is superfluous anyway), the
+ * background color might actually be gray yet not be flagged as such.
+ * This is not a problem for the current code, which uses
+ * PNG_BACKGROUND_IS_GRAY only to decide when to do the
+ * png_do_gray_to_rgb() transformation.
+ *
+ * TODO: this code needs to be revised to avoid the complexity and
+ * interdependencies. The color type of the background should be recorded in
+ * png_set_background, along with the bit depth, then the code has a record
+ * of exactly what color space the background is currently in.
+ */
+ if (png_ptr->transformations & PNG_BACKGROUND_EXPAND)
+ {
+ /* PNG_BACKGROUND_EXPAND: the background is in the file color space, so if
+ * the file was grayscale the background value is gray.
+ */
+ if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR))
+ png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
+ }
+
+ else if (png_ptr->transformations & PNG_COMPOSE)
+ {
+ /* PNG_COMPOSE: png_set_background was called with need_expand false,
+ * so the color is in the color space of the output or png_set_alpha_mode
+ * was called and the color is black. Ignore RGB_TO_GRAY because that
+ * happens before GRAY_TO_RGB.
+ */
+ if (png_ptr->transformations & PNG_GRAY_TO_RGB)
+ {
+ if (png_ptr->background.red == png_ptr->background.green &&
+ png_ptr->background.red == png_ptr->background.blue)
+ {
+ png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
+ png_ptr->background.gray = png_ptr->background.red;
+ }
+ }
+ }
+#endif /* PNG_READ_EXPAND_SUPPORTED && PNG_READ_BACKGROUND_SUPPORTED */
+#endif /* PNG_READ_GRAY_TO_RGB_SUPPORTED */
+
+ /* For indexed PNG data (PNG_COLOR_TYPE_PALETTE) many of the transformations
+ * can be performed directly on the palette, and some (such as rgb to gray)
+ * can be optimized inside the palette. This is particularly true of the
+ * composite (background and alpha) stuff, which can be pretty much all done
+ * in the palette even if the result is expanded to RGB or gray afterward.
+ *
+ * NOTE: this is Not Yet Implemented, the code behaves as in 1.5.1 and
+ * earlier and the palette stuff is actually handled on the first row. This
+ * leads to the reported bug that the palette returned by png_get_PLTE is not
+ * updated.
+ */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ png_init_palette_transformations(png_ptr);
+
+ else
+ png_init_rgb_transformations(png_ptr);
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
+ defined(PNG_READ_EXPAND_16_SUPPORTED)
+ if ((png_ptr->transformations & PNG_EXPAND_16) &&
+ (png_ptr->transformations & PNG_COMPOSE) &&
+ !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ png_ptr->bit_depth != 16)
+ {
+ /* TODO: fix this. Because the expand_16 operation is after the compose
+ * handling the background color must be 8, not 16, bits deep, but the
+ * application will supply a 16-bit value so reduce it here.
+ *
+ * The PNG_BACKGROUND_EXPAND code above does not expand to 16 bits at
+ * present, so that case is ok (until do_expand_16 is moved.)
+ *
+ * NOTE: this discards the low 16 bits of the user supplied background
+ * color, but until expand_16 works properly there is no choice!
+ */
+# define CHOP(x) (x)=((png_uint_16)PNG_DIV257(x))
+ CHOP(png_ptr->background.red);
+ CHOP(png_ptr->background.green);
+ CHOP(png_ptr->background.blue);
+ CHOP(png_ptr->background.gray);
+# undef CHOP
+ }
+#endif /* PNG_READ_BACKGROUND_SUPPORTED && PNG_READ_EXPAND_16_SUPPORTED */
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
+ (defined(PNG_READ_SCALE_16_TO_8_SUPPORTED) || \
+ defined(PNG_READ_STRIP_16_TO_8_SUPPORTED))
+ if ((png_ptr->transformations & (PNG_16_TO_8|PNG_SCALE_16_TO_8)) &&
+ (png_ptr->transformations & PNG_COMPOSE) &&
+ !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ png_ptr->bit_depth == 16)
+ {
+ /* On the other hand, if a 16-bit file is to be reduced to 8-bits per
+ * component this will also happen after PNG_COMPOSE and so the background
+ * color must be pre-expanded here.
+ *
+ * TODO: fix this too.
+ */
+ png_ptr->background.red = (png_uint_16)(png_ptr->background.red * 257);
+ png_ptr->background.green =
+ (png_uint_16)(png_ptr->background.green * 257);
+ png_ptr->background.blue = (png_uint_16)(png_ptr->background.blue * 257);
+ png_ptr->background.gray = (png_uint_16)(png_ptr->background.gray * 257);
+ }
+#endif
+
+ /* NOTE: below 'PNG_READ_ALPHA_MODE_SUPPORTED' is presumed to also enable the
+ * background support (see the comments in scripts/pnglibconf.dfa), this
+ * allows pre-multiplication of the alpha channel to be implemented as
+ * compositing on black. This is probably sub-optimal and has been done in
+ * 1.5.4 betas simply to enable external critique and testing (i.e. to
+ * implement the new API quickly, without lots of internal changes.)
+ */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+# ifdef PNG_READ_BACKGROUND_SUPPORTED
+ /* Includes ALPHA_MODE */
+ png_ptr->background_1 = png_ptr->background;
+# endif
+
+ /* This needs to change - in the palette image case a whole set of tables are
+ * built when it would be quicker to just calculate the correct value for
+ * each palette entry directly. Also, the test is too tricky - why check
+ * PNG_RGB_TO_GRAY if PNG_GAMMA is not set? The answer seems to be that
+ * PNG_GAMMA is cancelled even if the gamma is known? The test excludes the
+ * PNG_COMPOSE case, so apparently if there is no *overall* gamma correction
+ * the gamma tables will not be built even if composition is required on a
+ * gamma encoded value.
+ *
+ * In 1.5.4 this is addressed below by an additional check on the individual
+ * file gamma - if it is not 1.0 both RGB_TO_GRAY and COMPOSE need the
+ * tables.
+ */
+ if ((png_ptr->transformations & PNG_GAMMA)
+ || ((png_ptr->transformations & PNG_RGB_TO_GRAY)
+ && (png_gamma_significant(png_ptr->colorspace.gamma) ||
+ png_gamma_significant(png_ptr->screen_gamma)))
+ || ((png_ptr->transformations & PNG_COMPOSE)
+ && (png_gamma_significant(png_ptr->colorspace.gamma)
+ || png_gamma_significant(png_ptr->screen_gamma)
+# ifdef PNG_READ_BACKGROUND_SUPPORTED
+ || (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_UNIQUE
+ && png_gamma_significant(png_ptr->background_gamma))
+# endif
+ )) || ((png_ptr->transformations & PNG_ENCODE_ALPHA)
+ && png_gamma_significant(png_ptr->screen_gamma))
+ )
+ {
+ png_build_gamma_table(png_ptr, png_ptr->bit_depth);
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ if (png_ptr->transformations & PNG_COMPOSE)
+ {
+ /* Issue a warning about this combination: because RGB_TO_GRAY is
+ * optimized to do the gamma transform if present yet do_background has
+ * to do the same thing if both options are set a
+ * double-gamma-correction happens. This is true in all versions of
+ * libpng to date.
+ */
+ if (png_ptr->transformations & PNG_RGB_TO_GRAY)
+ png_warning(png_ptr,
+ "libpng does not support gamma+background+rgb_to_gray");
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ /* We don't get to here unless there is a tRNS chunk with non-opaque
+ * entries - see the checking code at the start of this function.
+ */
+ png_color back, back_1;
+ png_colorp palette = png_ptr->palette;
+ int num_palette = png_ptr->num_palette;
+ int i;
+ if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE)
+ {
+
+ back.red = png_ptr->gamma_table[png_ptr->background.red];
+ back.green = png_ptr->gamma_table[png_ptr->background.green];
+ back.blue = png_ptr->gamma_table[png_ptr->background.blue];
+
+ back_1.red = png_ptr->gamma_to_1[png_ptr->background.red];
+ back_1.green = png_ptr->gamma_to_1[png_ptr->background.green];
+ back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue];
+ }
+ else
+ {
+ png_fixed_point g, gs;
+
+ switch (png_ptr->background_gamma_type)
+ {
+ case PNG_BACKGROUND_GAMMA_SCREEN:
+ g = (png_ptr->screen_gamma);
+ gs = PNG_FP_1;
+ break;
+
+ case PNG_BACKGROUND_GAMMA_FILE:
+ g = png_reciprocal(png_ptr->colorspace.gamma);
+ gs = png_reciprocal2(png_ptr->colorspace.gamma,
+ png_ptr->screen_gamma);
+ break;
+
+ case PNG_BACKGROUND_GAMMA_UNIQUE:
+ g = png_reciprocal(png_ptr->background_gamma);
+ gs = png_reciprocal2(png_ptr->background_gamma,
+ png_ptr->screen_gamma);
+ break;
+ default:
+ g = PNG_FP_1; /* back_1 */
+ gs = PNG_FP_1; /* back */
+ break;
+ }
+
+ if (png_gamma_significant(gs))
+ {
+ back.red = png_gamma_8bit_correct(png_ptr->background.red,
+ gs);
+ back.green = png_gamma_8bit_correct(png_ptr->background.green,
+ gs);
+ back.blue = png_gamma_8bit_correct(png_ptr->background.blue,
+ gs);
+ }
+
+ else
+ {
+ back.red = (png_byte)png_ptr->background.red;
+ back.green = (png_byte)png_ptr->background.green;
+ back.blue = (png_byte)png_ptr->background.blue;
+ }
+
+ if (png_gamma_significant(g))
+ {
+ back_1.red = png_gamma_8bit_correct(png_ptr->background.red,
+ g);
+ back_1.green = png_gamma_8bit_correct(
+ png_ptr->background.green, g);
+ back_1.blue = png_gamma_8bit_correct(png_ptr->background.blue,
+ g);
+ }
+
+ else
+ {
+ back_1.red = (png_byte)png_ptr->background.red;
+ back_1.green = (png_byte)png_ptr->background.green;
+ back_1.blue = (png_byte)png_ptr->background.blue;
+ }
+ }
+
+ for (i = 0; i < num_palette; i++)
+ {
+ if (i < (int)png_ptr->num_trans &&
+ png_ptr->trans_alpha[i] != 0xff)
+ {
+ if (png_ptr->trans_alpha[i] == 0)
+ {
+ palette[i] = back;
+ }
+ else /* if (png_ptr->trans_alpha[i] != 0xff) */
+ {
+ png_byte v, w;
+
+ v = png_ptr->gamma_to_1[palette[i].red];
+ png_composite(w, v, png_ptr->trans_alpha[i], back_1.red);
+ palette[i].red = png_ptr->gamma_from_1[w];
+
+ v = png_ptr->gamma_to_1[palette[i].green];
+ png_composite(w, v, png_ptr->trans_alpha[i], back_1.green);
+ palette[i].green = png_ptr->gamma_from_1[w];
+
+ v = png_ptr->gamma_to_1[palette[i].blue];
+ png_composite(w, v, png_ptr->trans_alpha[i], back_1.blue);
+ palette[i].blue = png_ptr->gamma_from_1[w];
+ }
+ }
+ else
+ {
+ palette[i].red = png_ptr->gamma_table[palette[i].red];
+ palette[i].green = png_ptr->gamma_table[palette[i].green];
+ palette[i].blue = png_ptr->gamma_table[palette[i].blue];
+ }
+ }
+
+ /* Prevent the transformations being done again.
+ *
+ * NOTE: this is highly dubious; it removes the transformations in
+ * place. This seems inconsistent with the general treatment of the
+ * transformations elsewhere.
+ */
+ png_ptr->transformations &= ~(PNG_COMPOSE | PNG_GAMMA);
+ } /* color_type == PNG_COLOR_TYPE_PALETTE */
+
+ /* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */
+ else /* color_type != PNG_COLOR_TYPE_PALETTE */
+ {
+ int gs_sig, g_sig;
+ png_fixed_point g = PNG_FP_1; /* Correction to linear */
+ png_fixed_point gs = PNG_FP_1; /* Correction to screen */
+
+ switch (png_ptr->background_gamma_type)
+ {
+ case PNG_BACKGROUND_GAMMA_SCREEN:
+ g = png_ptr->screen_gamma;
+ /* gs = PNG_FP_1; */
+ break;
+
+ case PNG_BACKGROUND_GAMMA_FILE:
+ g = png_reciprocal(png_ptr->colorspace.gamma);
+ gs = png_reciprocal2(png_ptr->colorspace.gamma,
+ png_ptr->screen_gamma);
+ break;
+
+ case PNG_BACKGROUND_GAMMA_UNIQUE:
+ g = png_reciprocal(png_ptr->background_gamma);
+ gs = png_reciprocal2(png_ptr->background_gamma,
+ png_ptr->screen_gamma);
+ break;
+
+ default:
+ png_error(png_ptr, "invalid background gamma type");
+ }
+
+ g_sig = png_gamma_significant(g);
+ gs_sig = png_gamma_significant(gs);
+
+ if (g_sig)
+ png_ptr->background_1.gray = png_gamma_correct(png_ptr,
+ png_ptr->background.gray, g);
+
+ if (gs_sig)
+ png_ptr->background.gray = png_gamma_correct(png_ptr,
+ png_ptr->background.gray, gs);
+
+ if ((png_ptr->background.red != png_ptr->background.green) ||
+ (png_ptr->background.red != png_ptr->background.blue) ||
+ (png_ptr->background.red != png_ptr->background.gray))
+ {
+ /* RGB or RGBA with color background */
+ if (g_sig)
+ {
+ png_ptr->background_1.red = png_gamma_correct(png_ptr,
+ png_ptr->background.red, g);
+
+ png_ptr->background_1.green = png_gamma_correct(png_ptr,
+ png_ptr->background.green, g);
+
+ png_ptr->background_1.blue = png_gamma_correct(png_ptr,
+ png_ptr->background.blue, g);
+ }
+
+ if (gs_sig)
+ {
+ png_ptr->background.red = png_gamma_correct(png_ptr,
+ png_ptr->background.red, gs);
+
+ png_ptr->background.green = png_gamma_correct(png_ptr,
+ png_ptr->background.green, gs);
+
+ png_ptr->background.blue = png_gamma_correct(png_ptr,
+ png_ptr->background.blue, gs);
+ }
+ }
+
+ else
+ {
+ /* GRAY, GRAY ALPHA, RGB, or RGBA with gray background */
+ png_ptr->background_1.red = png_ptr->background_1.green
+ = png_ptr->background_1.blue = png_ptr->background_1.gray;
+
+ png_ptr->background.red = png_ptr->background.green
+ = png_ptr->background.blue = png_ptr->background.gray;
+ }
+
+ /* The background is now in screen gamma: */
+ png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_SCREEN;
+ } /* color_type != PNG_COLOR_TYPE_PALETTE */
+ }/* png_ptr->transformations & PNG_BACKGROUND */
+
+ else
+ /* Transformation does not include PNG_BACKGROUND */
+#endif /* PNG_READ_BACKGROUND_SUPPORTED */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ /* RGB_TO_GRAY needs to have non-gamma-corrected values! */
+ && ((png_ptr->transformations & PNG_EXPAND) == 0 ||
+ (png_ptr->transformations & PNG_RGB_TO_GRAY) == 0)
+#endif
+ )
+ {
+ png_colorp palette = png_ptr->palette;
+ int num_palette = png_ptr->num_palette;
+ int i;
+
+ /* NOTE: there are other transformations that should probably be in
+ * here too.
+ */
+ for (i = 0; i < num_palette; i++)
+ {
+ palette[i].red = png_ptr->gamma_table[palette[i].red];
+ palette[i].green = png_ptr->gamma_table[palette[i].green];
+ palette[i].blue = png_ptr->gamma_table[palette[i].blue];
+ }
+
+ /* Done the gamma correction. */
+ png_ptr->transformations &= ~PNG_GAMMA;
+ } /* color_type == PALETTE && !PNG_BACKGROUND transformation */
+ }
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ else
+#endif
+#endif /* PNG_READ_GAMMA_SUPPORTED */
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ /* No GAMMA transformation (see the hanging else 4 lines above) */
+ if ((png_ptr->transformations & PNG_COMPOSE) &&
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
+ {
+ int i;
+ int istop = (int)png_ptr->num_trans;
+ png_color back;
+ png_colorp palette = png_ptr->palette;
+
+ back.red = (png_byte)png_ptr->background.red;
+ back.green = (png_byte)png_ptr->background.green;
+ back.blue = (png_byte)png_ptr->background.blue;
+
+ for (i = 0; i < istop; i++)
+ {
+ if (png_ptr->trans_alpha[i] == 0)
+ {
+ palette[i] = back;
+ }
+
+ else if (png_ptr->trans_alpha[i] != 0xff)
+ {
+ /* The png_composite() macro is defined in png.h */
+ png_composite(palette[i].red, palette[i].red,
+ png_ptr->trans_alpha[i], back.red);
+
+ png_composite(palette[i].green, palette[i].green,
+ png_ptr->trans_alpha[i], back.green);
+
+ png_composite(palette[i].blue, palette[i].blue,
+ png_ptr->trans_alpha[i], back.blue);
+ }
+ }
+
+ png_ptr->transformations &= ~PNG_COMPOSE;
+
+ //png_ptr->flags |= PNG_FLAG_STRIP_ALPHA; /* Add by Sunliang.Liu */
+ }
+#endif /* PNG_READ_BACKGROUND_SUPPORTED */
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+ if ((png_ptr->transformations & PNG_SHIFT) &&
+ !(png_ptr->transformations & PNG_EXPAND) &&
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
+ {
+ int i;
+ int istop = png_ptr->num_palette;
+ int shift = 8 - png_ptr->sig_bit.red;
+
+ png_ptr->transformations &= ~PNG_SHIFT;
+
+ /* significant bits can be in the range 1 to 7 for a meaninful result, if
+ * the number of significant bits is 0 then no shift is done (this is an
+ * error condition which is silently ignored.)
+ */
+ if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
+ {
+ int component = png_ptr->palette[i].red;
+
+ component >>= shift;
+ png_ptr->palette[i].red = (png_byte)component;
+ }
+
+ shift = 8 - png_ptr->sig_bit.green;
+ if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
+ {
+ int component = png_ptr->palette[i].green;
+
+ component >>= shift;
+ png_ptr->palette[i].green = (png_byte)component;
+ }
+
+ shift = 8 - png_ptr->sig_bit.blue;
+ if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
+ {
+ int component = png_ptr->palette[i].blue;
+
+ component >>= shift;
+ png_ptr->palette[i].blue = (png_byte)component;
+ }
+ }
+#endif /* PNG_READ_SHIFT_SUPPORTED */
+}
+
+/* Modify the info structure to reflect the transformations. The
+ * info should be updated so a PNG file could be written with it,
+ * assuming the transformations result in valid PNG data.
+ */
+void /* PRIVATE */
+png_read_transform_info(png_structrp png_ptr, png_inforp info_ptr)
+{
+ png_debug(1, "in png_read_transform_info");
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND)
+ {
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ /* This check must match what actually happens in
+ * png_do_expand_palette; if it ever checks the tRNS chunk to see if
+ * it is all opaque we must do the same (at present it does not.)
+ */
+ if (png_ptr->num_trans > 0)
+ info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+
+ else
+ info_ptr->color_type = PNG_COLOR_TYPE_RGB;
+
+ info_ptr->bit_depth = 8;
+ info_ptr->num_trans = 0;
+ }
+ else
+ {
+ if (png_ptr->num_trans)
+ {
+ if (png_ptr->transformations & PNG_EXPAND_tRNS)
+ info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
+ }
+ if (info_ptr->bit_depth < 8)
+ info_ptr->bit_depth = 8;
+
+ info_ptr->num_trans = 0;
+ }
+ }
+#endif
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+ /* The following is almost certainly wrong unless the background value is in
+ * the screen space!
+ */
+ if (png_ptr->transformations & PNG_COMPOSE)
+ info_ptr->background = png_ptr->background;
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ /* The following used to be conditional on PNG_GAMMA (prior to 1.5.4),
+ * however it seems that the code in png_init_read_transformations, which has
+ * been called before this from png_read_update_info->png_read_start_row
+ * sometimes does the gamma transform and cancels the flag.
+ *
+ * TODO: this looks wrong; the info_ptr should end up with a gamma equal to
+ * the screen_gamma value. The following probably results in weirdness if
+ * the info_ptr is used by the app after the rows have been read.
+ */
+ info_ptr->colorspace.gamma = png_ptr->colorspace.gamma;
+#endif
+
+ if (info_ptr->bit_depth == 16)
+ {
+# ifdef PNG_READ_16BIT_SUPPORTED
+# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ if (png_ptr->transformations & PNG_SCALE_16_TO_8)
+ info_ptr->bit_depth = 8;
+# endif
+
+# ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+ if (png_ptr->transformations & PNG_16_TO_8)
+ info_ptr->bit_depth = 8;
+# endif
+
+# else
+ /* No 16 bit support: force chopping 16-bit input down to 8, in this case
+ * the app program can chose if both APIs are available by setting the
+ * correct scaling to use.
+ */
+# ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+ /* For compatibility with previous versions use the strip method by
+ * default. This code works because if PNG_SCALE_16_TO_8 is already
+ * set the code below will do that in preference to the chop.
+ */
+ png_ptr->transformations |= PNG_16_TO_8;
+ info_ptr->bit_depth = 8;
+# else
+
+# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ png_ptr->transformations |= PNG_SCALE_16_TO_8;
+ info_ptr->bit_depth = 8;
+# else
+
+ CONFIGURATION ERROR: you must enable at least one 16 to 8 method
+# endif
+# endif
+#endif /* !READ_16BIT_SUPPORTED */
+ }
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ if (png_ptr->transformations & PNG_GRAY_TO_RGB)
+ info_ptr->color_type = (png_byte)(info_ptr->color_type |
+ PNG_COLOR_MASK_COLOR);
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ if (png_ptr->transformations & PNG_RGB_TO_GRAY)
+ info_ptr->color_type = (png_byte)(info_ptr->color_type &
+ ~PNG_COLOR_MASK_COLOR);
+#endif
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+ if (png_ptr->transformations & PNG_QUANTIZE)
+ {
+ if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) ||
+ (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) &&
+ png_ptr->palette_lookup && info_ptr->bit_depth == 8)
+ {
+ info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
+ }
+ }
+#endif
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND_16 && info_ptr->bit_depth == 8 &&
+ info_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ info_ptr->bit_depth = 16;
+ }
+#endif
+
+#ifdef PNG_READ_PACK_SUPPORTED
+ if ((png_ptr->transformations & PNG_PACK) && (info_ptr->bit_depth < 8))
+ info_ptr->bit_depth = 8;
+#endif
+
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ info_ptr->channels = 1;
+
+ else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ info_ptr->channels = 3;
+
+ else
+ info_ptr->channels = 1;
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_STRIP_ALPHA)
+ {
+ info_ptr->color_type = (png_byte)(info_ptr->color_type &
+ ~PNG_COLOR_MASK_ALPHA);
+ info_ptr->num_trans = 0;
+ }
+#endif
+
+ if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
+ info_ptr->channels++;
+
+#ifdef PNG_READ_FILLER_SUPPORTED
+ /* STRIP_ALPHA and FILLER allowed: MASK_ALPHA bit stripped above */
+ if ((png_ptr->transformations & PNG_FILLER) &&
+ ((info_ptr->color_type == PNG_COLOR_TYPE_RGB) ||
+ (info_ptr->color_type == PNG_COLOR_TYPE_GRAY)))
+ {
+ info_ptr->channels++;
+ /* If adding a true alpha channel not just filler */
+ if (png_ptr->transformations & PNG_ADD_ALPHA)
+ info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
+ }
+#endif
+
+#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) && \
+defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
+ if (png_ptr->transformations & PNG_USER_TRANSFORM)
+ {
+ if (info_ptr->bit_depth < png_ptr->user_transform_depth)
+ info_ptr->bit_depth = png_ptr->user_transform_depth;
+
+ if (info_ptr->channels < png_ptr->user_transform_channels)
+ info_ptr->channels = png_ptr->user_transform_channels;
+ }
+#endif
+
+ info_ptr->pixel_depth = (png_byte)(info_ptr->channels *
+ info_ptr->bit_depth);
+
+ info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, info_ptr->width);
+
+ /* Adding in 1.5.4: cache the above value in png_struct so that we can later
+ * check in png_rowbytes that the user buffer won't get overwritten. Note
+ * that the field is not always set - if png_read_update_info isn't called
+ * the application has to either not do any transforms or get the calculation
+ * right itself.
+ */
+ png_ptr->info_rowbytes = info_ptr->rowbytes;
+
+#ifndef PNG_READ_EXPAND_SUPPORTED
+ if (png_ptr)
+ return;
+#endif
+}
+
+/* Transform the row. The order of transformations is significant,
+ * and is very touchy. If you add a transformation, take care to
+ * decide how it fits in with the other transformations here.
+ */
+void /* PRIVATE */
+png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info)
+{
+ png_debug(1, "in png_do_read_transformations");
+
+ if (png_ptr->row_buf == NULL)
+ {
+ /* Prior to 1.5.4 this output row/pass where the NULL pointer is, but this
+ * error is incredibly rare and incredibly easy to debug without this
+ * information.
+ */
+ png_error(png_ptr, "NULL row buffer");
+ }
+
+ /* The following is debugging; prior to 1.5.4 the code was never compiled in;
+ * in 1.5.4 PNG_FLAG_DETECT_UNINITIALIZED was added and the macro
+ * PNG_WARN_UNINITIALIZED_ROW removed. In 1.6 the new flag is set only for
+ * all transformations, however in practice the ROW_INIT always gets done on
+ * demand, if necessary.
+ */
+ if ((png_ptr->flags & PNG_FLAG_DETECT_UNINITIALIZED) != 0 &&
+ !(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ {
+ /* Application has failed to call either png_read_start_image() or
+ * png_read_update_info() after setting transforms that expand pixels.
+ * This check added to libpng-1.2.19 (but not enabled until 1.5.4).
+ */
+ png_error(png_ptr, "Uninitialized row");
+ }
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND)
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ png_do_expand_palette(row_info, png_ptr->row_buf + 1,
+ png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans);
+ }
+
+ else
+ {
+ if (png_ptr->num_trans &&
+ (png_ptr->transformations & PNG_EXPAND_tRNS))
+ png_do_expand(row_info, png_ptr->row_buf + 1,
+ &(png_ptr->trans_color));
+
+ else
+ png_do_expand(row_info, png_ptr->row_buf + 1,
+ NULL);
+ }
+ }
+#endif
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
+ !(png_ptr->transformations & PNG_COMPOSE) &&
+ (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
+ row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
+ png_do_strip_channel(row_info, png_ptr->row_buf + 1,
+ 0 /* at_start == false, because SWAP_ALPHA happens later */);
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ if (png_ptr->transformations & PNG_RGB_TO_GRAY)
+ {
+ int rgb_error =
+ png_do_rgb_to_gray(png_ptr, row_info,
+ png_ptr->row_buf + 1);
+
+ if (rgb_error)
+ {
+ png_ptr->rgb_to_gray_status=1;
+ if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
+ PNG_RGB_TO_GRAY_WARN)
+ png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel");
+
+ if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
+ PNG_RGB_TO_GRAY_ERR)
+ png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel");
+ }
+ }
+#endif
+
+/* From Andreas Dilger e-mail to png-implement, 26 March 1998:
+ *
+ * In most cases, the "simple transparency" should be done prior to doing
+ * gray-to-RGB, or you will have to test 3x as many bytes to check if a
+ * pixel is transparent. You would also need to make sure that the
+ * transparency information is upgraded to RGB.
+ *
+ * To summarize, the current flow is:
+ * - Gray + simple transparency -> compare 1 or 2 gray bytes and composite
+ * with background "in place" if transparent,
+ * convert to RGB if necessary
+ * - Gray + alpha -> composite with gray background and remove alpha bytes,
+ * convert to RGB if necessary
+ *
+ * To support RGB backgrounds for gray images we need:
+ * - Gray + simple transparency -> convert to RGB + simple transparency,
+ * compare 3 or 6 bytes and composite with
+ * background "in place" if transparent
+ * (3x compare/pixel compared to doing
+ * composite with gray bkgrnd)
+ * - Gray + alpha -> convert to RGB + alpha, composite with background and
+ * remove alpha bytes (3x float
+ * operations/pixel compared with composite
+ * on gray background)
+ *
+ * Greg's change will do this. The reason it wasn't done before is for
+ * performance, as this increases the per-pixel operations. If we would check
+ * in advance if the background was gray or RGB, and position the gray-to-RGB
+ * transform appropriately, then it would save a lot of work/time.
+ */
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ /* If gray -> RGB, do so now only if background is non-gray; else do later
+ * for performance reasons
+ */
+ if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
+ !(png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
+ png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);
+#endif
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+ if (png_ptr->transformations & PNG_COMPOSE)
+ png_do_compose(row_info, png_ptr->row_buf + 1, png_ptr);
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if ((png_ptr->transformations & PNG_GAMMA) &&
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ /* Because RGB_TO_GRAY does the gamma transform. */
+ !(png_ptr->transformations & PNG_RGB_TO_GRAY) &&
+#endif
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+ /* Because PNG_COMPOSE does the gamma transform if there is something to
+ * do (if there is an alpha channel or transparency.)
+ */
+ !((png_ptr->transformations & PNG_COMPOSE) &&
+ ((png_ptr->num_trans != 0) ||
+ (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) &&
+#endif
+ /* Because png_init_read_transformations transforms the palette, unless
+ * RGB_TO_GRAY will do the transform.
+ */
+ (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE))
+ png_do_gamma(row_info, png_ptr->row_buf + 1, png_ptr);
+#endif
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
+ (png_ptr->transformations & PNG_COMPOSE) &&
+ (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
+ row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
+ png_do_strip_channel(row_info, png_ptr->row_buf + 1,
+ 0 /* at_start == false, because SWAP_ALPHA happens later */);
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+ if ((png_ptr->transformations & PNG_ENCODE_ALPHA) &&
+ (row_info->color_type & PNG_COLOR_MASK_ALPHA))
+ png_do_encode_alpha(row_info, png_ptr->row_buf + 1, png_ptr);
+#endif
+
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+ if (png_ptr->transformations & PNG_SCALE_16_TO_8)
+ png_do_scale_16_to_8(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+ /* There is no harm in doing both of these because only one has any effect,
+ * by putting the 'scale' option first if the app asks for scale (either by
+ * calling the API or in a TRANSFORM flag) this is what happens.
+ */
+ if (png_ptr->transformations & PNG_16_TO_8)
+ png_do_chop(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+ if (png_ptr->transformations & PNG_QUANTIZE)
+ {
+ png_do_quantize(row_info, png_ptr->row_buf + 1,
+ png_ptr->palette_lookup, png_ptr->quantize_index);
+
+ if (row_info->rowbytes == 0)
+ png_error(png_ptr, "png_do_quantize returned rowbytes=0");
+ }
+#endif /* PNG_READ_QUANTIZE_SUPPORTED */
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+ /* Do the expansion now, after all the arithmetic has been done. Notice
+ * that previous transformations can handle the PNG_EXPAND_16 flag if this
+ * is efficient (particularly true in the case of gamma correction, where
+ * better accuracy results faster!)
+ */
+ if (png_ptr->transformations & PNG_EXPAND_16)
+ png_do_expand_16(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ /* NOTE: moved here in 1.5.4 (from much later in this list.) */
+ if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
+ (png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
+ png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_INVERT_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_MONO)
+ png_do_invert(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+ if (png_ptr->transformations & PNG_SHIFT)
+ png_do_unshift(row_info, png_ptr->row_buf + 1,
+ &(png_ptr->shift));
+#endif
+
+#ifdef PNG_READ_PACK_SUPPORTED
+ if (png_ptr->transformations & PNG_PACK)
+ png_do_unpack(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ /* Added at libpng-1.5.10 */
+ if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
+ png_ptr->num_palette_max >= 0)
+ png_do_check_palette_indexes(png_ptr, row_info);
+#endif
+
+#ifdef PNG_READ_BGR_SUPPORTED
+ if (png_ptr->transformations & PNG_BGR)
+ png_do_bgr(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ png_do_packswap(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_FILLER_SUPPORTED
+ if (png_ptr->transformations & PNG_FILLER)
+ png_do_read_filler(row_info, png_ptr->row_buf + 1,
+ (png_uint_32)png_ptr->filler, png_ptr->flags);
+#endif
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_ALPHA)
+ png_do_read_invert_alpha(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_SWAP_ALPHA)
+ png_do_read_swap_alpha(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+#ifdef PNG_READ_SWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_do_swap(row_info, png_ptr->row_buf + 1);
+#endif
+#endif
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ if (png_ptr->transformations & PNG_USER_TRANSFORM)
+ {
+ if (png_ptr->read_user_transform_fn != NULL)
+ (*(png_ptr->read_user_transform_fn)) /* User read transform function */
+ (png_ptr, /* png_ptr */
+ row_info, /* row_info: */
+ /* png_uint_32 width; width of row */
+ /* png_size_t rowbytes; number of bytes in row */
+ /* png_byte color_type; color type of pixels */
+ /* png_byte bit_depth; bit depth of samples */
+ /* png_byte channels; number of channels (1-4) */
+ /* png_byte pixel_depth; bits per pixel (depth*channels) */
+ png_ptr->row_buf + 1); /* start of pixel data for row */
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+ if (png_ptr->user_transform_depth)
+ row_info->bit_depth = png_ptr->user_transform_depth;
+
+ if (png_ptr->user_transform_channels)
+ row_info->channels = png_ptr->user_transform_channels;
+#endif
+ row_info->pixel_depth = (png_byte)(row_info->bit_depth *
+ row_info->channels);
+
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_info->width);
+ }
+#endif
+}
+
+#ifdef PNG_READ_PACK_SUPPORTED
+/* Unpack pixels of 1, 2, or 4 bits per pixel into 1 byte per pixel,
+ * without changing the actual values. Thus, if you had a row with
+ * a bit depth of 1, you would end up with bytes that only contained
+ * the numbers 0 or 1. If you would rather they contain 0 and 255, use
+ * png_do_shift() after this.
+ */
+void /* PRIVATE */
+png_do_unpack(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_unpack");
+
+ if (row_info->bit_depth < 8)
+ {
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ png_bytep sp = row + (png_size_t)((row_width - 1) >> 3);
+ png_bytep dp = row + (png_size_t)row_width - 1;
+ png_uint_32 shift = 7 - (int)((row_width + 7) & 0x07);
+ for (i = 0; i < row_width; i++)
+ {
+ *dp = (png_byte)((*sp >> shift) & 0x01);
+
+ if (shift == 7)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift++;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 2:
+ {
+
+ png_bytep sp = row + (png_size_t)((row_width - 1) >> 2);
+ png_bytep dp = row + (png_size_t)row_width - 1;
+ png_uint_32 shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
+ for (i = 0; i < row_width; i++)
+ {
+ *dp = (png_byte)((*sp >> shift) & 0x03);
+
+ if (shift == 6)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift += 2;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 4:
+ {
+ png_bytep sp = row + (png_size_t)((row_width - 1) >> 1);
+ png_bytep dp = row + (png_size_t)row_width - 1;
+ png_uint_32 shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
+ for (i = 0; i < row_width; i++)
+ {
+ *dp = (png_byte)((*sp >> shift) & 0x0f);
+
+ if (shift == 4)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift = 4;
+
+ dp--;
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = (png_byte)(8 * row_info->channels);
+ row_info->rowbytes = row_width * row_info->channels;
+ }
+}
+#endif
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+/* Reverse the effects of png_do_shift. This routine merely shifts the
+ * pixels back to their significant bits values. Thus, if you have
+ * a row of bit depth 8, but only 5 are significant, this will shift
+ * the values back to 0 through 31.
+ */
+void /* PRIVATE */
+png_do_unshift(png_row_infop row_info, png_bytep row,
+ png_const_color_8p sig_bits)
+{
+ int color_type;
+
+ png_debug(1, "in png_do_unshift");
+
+ /* The palette case has already been handled in the _init routine. */
+ color_type = row_info->color_type;
+
+ if (color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ int shift[4];
+ int channels = 0;
+ int bit_depth = row_info->bit_depth;
+
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ shift[channels++] = bit_depth - sig_bits->red;
+ shift[channels++] = bit_depth - sig_bits->green;
+ shift[channels++] = bit_depth - sig_bits->blue;
+ }
+
+ else
+ {
+ shift[channels++] = bit_depth - sig_bits->gray;
+ }
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ shift[channels++] = bit_depth - sig_bits->alpha;
+ }
+
+ {
+ int c, have_shift;
+
+ for (c = have_shift = 0; c < channels; ++c)
+ {
+ /* A shift of more than the bit depth is an error condition but it
+ * gets ignored here.
+ */
+ if (shift[c] <= 0 || shift[c] >= bit_depth)
+ shift[c] = 0;
+
+ else
+ have_shift = 1;
+ }
+
+ if (!have_shift)
+ return;
+ }
+
+ switch (bit_depth)
+ {
+ default:
+ /* Must be 1bpp gray: should not be here! */
+ /* NOTREACHED */
+ break;
+
+ case 2:
+ /* Must be 2bpp gray */
+ /* assert(channels == 1 && shift[0] == 1) */
+ {
+ png_bytep bp = row;
+ png_bytep bp_end = bp + row_info->rowbytes;
+
+ while (bp < bp_end)
+ {
+ int b = (*bp >> 1) & 0x55;
+ *bp++ = (png_byte)b;
+ }
+ break;
+ }
+
+ case 4:
+ /* Must be 4bpp gray */
+ /* assert(channels == 1) */
+ {
+ png_bytep bp = row;
+ png_bytep bp_end = bp + row_info->rowbytes;
+ int gray_shift = shift[0];
+ int mask = 0xf >> gray_shift;
+
+ mask |= mask << 4;
+
+ while (bp < bp_end)
+ {
+ int b = (*bp >> gray_shift) & mask;
+ *bp++ = (png_byte)b;
+ }
+ break;
+ }
+
+ case 8:
+ /* Single byte components, G, GA, RGB, RGBA */
+ {
+ png_bytep bp = row;
+ png_bytep bp_end = bp + row_info->rowbytes;
+ int channel = 0;
+
+ while (bp < bp_end)
+ {
+ int b = *bp >> shift[channel];
+ if (++channel >= channels)
+ channel = 0;
+ *bp++ = (png_byte)b;
+ }
+ break;
+ }
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ case 16:
+ /* Double byte components, G, GA, RGB, RGBA */
+ {
+ png_bytep bp = row;
+ png_bytep bp_end = bp + row_info->rowbytes;
+ int channel = 0;
+
+ while (bp < bp_end)
+ {
+ int value = (bp[0] << 8) + bp[1];
+
+ value >>= shift[channel];
+ if (++channel >= channels)
+ channel = 0;
+ *bp++ = (png_byte)(value >> 8);
+ *bp++ = (png_byte)(value & 0xff);
+ }
+ break;
+ }
+#endif
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+/* Scale rows of bit depth 16 down to 8 accurately */
+void /* PRIVATE */
+png_do_scale_16_to_8(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_scale_16_to_8");
+
+ if (row_info->bit_depth == 16)
+ {
+ png_bytep sp = row; /* source */
+ png_bytep dp = row; /* destination */
+ png_bytep ep = sp + row_info->rowbytes; /* end+1 */
+
+ while (sp < ep)
+ {
+ /* The input is an array of 16 bit components, these must be scaled to
+ * 8 bits each. For a 16 bit value V the required value (from the PNG
+ * specification) is:
+ *
+ * (V * 255) / 65535
+ *
+ * This reduces to round(V / 257), or floor((V + 128.5)/257)
+ *
+ * Represent V as the two byte value vhi.vlo. Make a guess that the
+ * result is the top byte of V, vhi, then the correction to this value
+ * is:
+ *
+ * error = floor(((V-vhi.vhi) + 128.5) / 257)
+ * = floor(((vlo-vhi) + 128.5) / 257)
+ *
+ * This can be approximated using integer arithmetic (and a signed
+ * shift):
+ *
+ * error = (vlo-vhi+128) >> 8;
+ *
+ * The approximate differs from the exact answer only when (vlo-vhi) is
+ * 128; it then gives a correction of +1 when the exact correction is
+ * 0. This gives 128 errors. The exact answer (correct for all 16 bit
+ * input values) is:
+ *
+ * error = (vlo-vhi+128)*65535 >> 24;
+ *
+ * An alternative arithmetic calculation which also gives no errors is:
+ *
+ * (V * 255 + 32895) >> 16
+ */
+
+ png_int_32 tmp = *sp++; /* must be signed! */
+ tmp += (((int)*sp++ - tmp + 128) * 65535) >> 24;
+ *dp++ = (png_byte)tmp;
+ }
+
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = (png_byte)(8 * row_info->channels);
+ row_info->rowbytes = row_info->width * row_info->channels;
+ }
+}
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+void /* PRIVATE */
+/* Simply discard the low byte. This was the default behavior prior
+ * to libpng-1.5.4.
+ */
+png_do_chop(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_chop");
+
+ if (row_info->bit_depth == 16)
+ {
+ png_bytep sp = row; /* source */
+ png_bytep dp = row; /* destination */
+ png_bytep ep = sp + row_info->rowbytes; /* end+1 */
+
+ while (sp < ep)
+ {
+ *dp++ = *sp;
+ sp += 2; /* skip low byte */
+ }
+
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = (png_byte)(8 * row_info->channels);
+ row_info->rowbytes = row_info->width * row_info->channels;
+ }
+}
+#endif
+
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
+void /* PRIVATE */
+png_do_read_swap_alpha(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_read_swap_alpha");
+
+ {
+ png_uint_32 row_width = row_info->width;
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ /* This converts from RGBA to ARGB */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ save = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save;
+ }
+ }
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ /* This converts from RRGGBBAA to AARRGGBB */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save[2];
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ save[0] = *(--sp);
+ save[1] = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save[0];
+ *(--dp) = save[1];
+ }
+ }
+#endif
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ /* This converts from GA to AG */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ save = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save;
+ }
+ }
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ /* This converts from GGAA to AAGG */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save[2];
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ save[0] = *(--sp);
+ save[1] = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save[0];
+ *(--dp) = save[1];
+ }
+ }
+#endif
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+void /* PRIVATE */
+png_do_read_invert_alpha(png_row_infop row_info, png_bytep row)
+{
+ png_uint_32 row_width;
+ png_debug(1, "in png_do_read_invert_alpha");
+
+ row_width = row_info->width;
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This inverts the alpha channel in RGBA */
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+
+/* This does nothing:
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ We can replace it with:
+*/
+ sp-=3;
+ dp=sp;
+ }
+ }
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ /* This inverts the alpha channel in RRGGBBAA */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = (png_byte)(255 - *(--sp));
+
+/* This does nothing:
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ We can replace it with:
+*/
+ sp-=6;
+ dp=sp;
+ }
+ }
+#endif
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This inverts the alpha channel in GA */
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = *(--sp);
+ }
+ }
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ else
+ {
+ /* This inverts the alpha channel in GGAA */
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = (png_byte)(255 - *(--sp));
+/*
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+*/
+ sp-=2;
+ dp=sp;
+ }
+ }
+#endif
+ }
+}
+#endif
+
+#ifdef PNG_READ_FILLER_SUPPORTED
+/* Add filler channel if we have RGB color */
+void /* PRIVATE */
+png_do_read_filler(png_row_infop row_info, png_bytep row,
+ png_uint_32 filler, png_uint_32 flags)
+{
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ png_byte hi_filler = (png_byte)((filler>>8) & 0xff);
+#endif
+ png_byte lo_filler = (png_byte)(filler & 0xff);
+
+ png_debug(1, "in png_do_read_filler");
+
+ if (
+ row_info->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ /* This changes the data from G to GX */
+ png_bytep sp = row + (png_size_t)row_width;
+ png_bytep dp = sp + (png_size_t)row_width;
+ for (i = 1; i < row_width; i++)
+ {
+ *(--dp) = lo_filler;
+ *(--dp) = *(--sp);
+ }
+ *(--dp) = lo_filler;
+ row_info->channels = 2;
+ row_info->pixel_depth = 16;
+ row_info->rowbytes = row_width * 2;
+ }
+
+ else
+ {
+ /* This changes the data from G to XG */
+ png_bytep sp = row + (png_size_t)row_width;
+ png_bytep dp = sp + (png_size_t)row_width;
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = *(--sp);
+ *(--dp) = lo_filler;
+ }
+ row_info->channels = 2;
+ row_info->pixel_depth = 16;
+ row_info->rowbytes = row_width * 2;
+ }
+ }
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ else if (row_info->bit_depth == 16)
+ {
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ /* This changes the data from GG to GGXX */
+ png_bytep sp = row + (png_size_t)row_width * 2;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 1; i < row_width; i++)
+ {
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ }
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ row_info->channels = 2;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ }
+
+ else
+ {
+ /* This changes the data from GG to XXGG */
+ png_bytep sp = row + (png_size_t)row_width * 2;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ }
+ row_info->channels = 2;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ }
+ }
+#endif
+ } /* COLOR_TYPE == GRAY */
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ /* This changes the data from RGB to RGBX */
+ png_bytep sp = row + (png_size_t)row_width * 3;
+ png_bytep dp = sp + (png_size_t)row_width;
+ for (i = 1; i < row_width; i++)
+ {
+ *(--dp) = lo_filler;
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ }
+ *(--dp) = lo_filler;
+ row_info->channels = 4;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ }
+
+ else
+ {
+ /* This changes the data from RGB to XRGB */
+ png_bytep sp = row + (png_size_t)row_width * 3;
+ png_bytep dp = sp + (png_size_t)row_width;
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = lo_filler;
+ }
+ row_info->channels = 4;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ }
+ }
+
+#ifdef PNG_READ_16BIT_SUPPORTED
+ else if (row_info->bit_depth == 16)
+ {
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ /* This changes the data from RRGGBB to RRGGBBXX */
+ png_bytep sp = row + (png_size_t)row_width * 6;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 1; i < row_width; i++)
+ {
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ }
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ row_info->channels = 4;
+ row_info->pixel_depth = 64;
+ row_info->rowbytes = row_width * 8;
+ }
+
+ else
+ {
+ /* This changes the data from RRGGBB to XXRRGGBB */
+ png_bytep sp = row + (png_size_t)row_width * 6;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ }
+
+ row_info->channels = 4;
+ row_info->pixel_depth = 64;
+ row_info->rowbytes = row_width * 8;
+ }
+ }
+#endif
+ } /* COLOR_TYPE == RGB */
+}
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+/* Expand grayscale files to RGB, with or without alpha */
+void /* PRIVATE */
+png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
+{
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ png_debug(1, "in png_do_gray_to_rgb");
+
+ if (row_info->bit_depth >= 8 &&
+ !(row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This changes G to RGB */
+ png_bytep sp = row + (png_size_t)row_width - 1;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 0; i < row_width; i++)
+ {
+ *(dp--) = *sp;
+ *(dp--) = *sp;
+ *(dp--) = *(sp--);
+ }
+ }
+
+ else
+ {
+ /* This changes GG to RRGGBB */
+ png_bytep sp = row + (png_size_t)row_width * 2 - 1;
+ png_bytep dp = sp + (png_size_t)row_width * 4;
+ for (i = 0; i < row_width; i++)
+ {
+ *(dp--) = *sp;
+ *(dp--) = *(sp - 1);
+ *(dp--) = *sp;
+ *(dp--) = *(sp - 1);
+ *(dp--) = *(sp--);
+ *(dp--) = *(sp--);
+ }
+ }
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This changes GA to RGBA */
+ png_bytep sp = row + (png_size_t)row_width * 2 - 1;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 0; i < row_width; i++)
+ {
+ *(dp--) = *(sp--);
+ *(dp--) = *sp;
+ *(dp--) = *sp;
+ *(dp--) = *(sp--);
+ }
+ }
+
+ else
+ {
+ /* This changes GGAA to RRGGBBAA */
+ png_bytep sp = row + (png_size_t)row_width * 4 - 1;
+ png_bytep dp = sp + (png_size_t)row_width * 4;
+ for (i = 0; i < row_width; i++)
+ {
+ *(dp--) = *(sp--);
+ *(dp--) = *(sp--);
+ *(dp--) = *sp;
+ *(dp--) = *(sp - 1);
+ *(dp--) = *sp;
+ *(dp--) = *(sp - 1);
+ *(dp--) = *(sp--);
+ *(dp--) = *(sp--);
+ }
+ }
+ }
+ row_info->channels = (png_byte)(row_info->channels + 2);
+ row_info->color_type |= PNG_COLOR_MASK_COLOR;
+ row_info->pixel_depth = (png_byte)(row_info->channels *
+ row_info->bit_depth);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+}
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+/* Reduce RGB files to grayscale, with or without alpha
+ * using the equation given in Poynton's ColorFAQ of 1998-01-04 at
+ * <http://www.inforamp.net/~poynton/> (THIS LINK IS DEAD June 2008 but
+ * versions dated 1998 through November 2002 have been archived at
+ * http://web.archive.org/web/20000816232553/http://www.inforamp.net/
+ * ~poynton/notes/colour_and_gamma/ColorFAQ.txt )
+ * Charles Poynton poynton at poynton.com
+ *
+ * Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
+ *
+ * which can be expressed with integers as
+ *
+ * Y = (6969 * R + 23434 * G + 2365 * B)/32768
+ *
+ * Poynton's current link (as of January 2003 through July 2011):
+ * <http://www.poynton.com/notes/colour_and_gamma/>
+ * has changed the numbers slightly:
+ *
+ * Y = 0.2126*R + 0.7152*G + 0.0722*B
+ *
+ * which can be expressed with integers as
+ *
+ * Y = (6966 * R + 23436 * G + 2366 * B)/32768
+ *
+ * Historically, however, libpng uses numbers derived from the ITU-R Rec 709
+ * end point chromaticities and the D65 white point. Depending on the
+ * precision used for the D65 white point this produces a variety of different
+ * numbers, however if the four decimal place value used in ITU-R Rec 709 is
+ * used (0.3127,0.3290) the Y calculation would be:
+ *
+ * Y = (6968 * R + 23435 * G + 2366 * B)/32768
+ *
+ * While this is correct the rounding results in an overflow for white, because
+ * the sum of the rounded coefficients is 32769, not 32768. Consequently
+ * libpng uses, instead, the closest non-overflowing approximation:
+ *
+ * Y = (6968 * R + 23434 * G + 2366 * B)/32768
+ *
+ * Starting with libpng-1.5.5, if the image being converted has a cHRM chunk
+ * (including an sRGB chunk) then the chromaticities are used to calculate the
+ * coefficients. See the chunk handling in pngrutil.c for more information.
+ *
+ * In all cases the calculation is to be done in a linear colorspace. If no
+ * gamma information is available to correct the encoding of the original RGB
+ * values this results in an implicit assumption that the original PNG RGB
+ * values were linear.
+ *
+ * Other integer coefficents can be used via png_set_rgb_to_gray(). Because
+ * the API takes just red and green coefficients the blue coefficient is
+ * calculated to make the sum 32768. This will result in different rounding
+ * to that used above.
+ */
+int /* PRIVATE */
+png_do_rgb_to_gray(png_structrp png_ptr, png_row_infop row_info, png_bytep row)
+
+{
+ int rgb_error = 0;
+
+ png_debug(1, "in png_do_rgb_to_gray");
+
+ if (!(row_info->color_type & PNG_COLOR_MASK_PALETTE) &&
+ (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ PNG_CONST png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff;
+ PNG_CONST png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff;
+ PNG_CONST png_uint_32 bc = 32768 - rc - gc;
+ PNG_CONST png_uint_32 row_width = row_info->width;
+ PNG_CONST int have_alpha =
+ (row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0;
+
+ if (row_info->bit_depth == 8)
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ /* Notice that gamma to/from 1 are not necessarily inverses (if
+ * there is an overall gamma correction). Prior to 1.5.5 this code
+ * checked the linearized values for equality; this doesn't match
+ * the documentation, the original values must be checked.
+ */
+ if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte red = *(sp++);
+ png_byte green = *(sp++);
+ png_byte blue = *(sp++);
+
+ if (red != green || red != blue)
+ {
+ red = png_ptr->gamma_to_1[red];
+ green = png_ptr->gamma_to_1[green];
+ blue = png_ptr->gamma_to_1[blue];
+
+ rgb_error |= 1;
+ *(dp++) = png_ptr->gamma_from_1[
+ (rc*red + gc*green + bc*blue + 16384)>>15];
+ }
+
+ else
+ {
+ /* If there is no overall correction the table will not be
+ * set.
+ */
+ if (png_ptr->gamma_table != NULL)
+ red = png_ptr->gamma_table[red];
+
+ *(dp++) = red;
+ }
+
+ if (have_alpha)
+ *(dp++) = *(sp++);
+ }
+ }
+ else
+#endif
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte red = *(sp++);
+ png_byte green = *(sp++);
+ png_byte blue = *(sp++);
+
+ if (red != green || red != blue)
+ {
+ rgb_error |= 1;
+ /* NOTE: this is the historical approach which simply
+ * truncates the results.
+ */
+ *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
+ }
+
+ else
+ *(dp++) = red;
+
+ if (have_alpha)
+ *(dp++) = *(sp++);
+ }
+ }
+ }
+
+ else /* RGB bit_depth == 16 */
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (png_ptr->gamma_16_to_1 != NULL && png_ptr->gamma_16_from_1 != NULL)
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 red, green, blue, w;
+
+ red = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+ green = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+ blue = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+
+ if (red == green && red == blue)
+ {
+ if (png_ptr->gamma_16_table != NULL)
+ w = png_ptr->gamma_16_table[(red&0xff)
+ >> png_ptr->gamma_shift][red>>8];
+
+ else
+ w = red;
+ }
+
+ else
+ {
+ png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff)
+ >> png_ptr->gamma_shift][red>>8];
+ png_uint_16 green_1 =
+ png_ptr->gamma_16_to_1[(green&0xff) >>
+ png_ptr->gamma_shift][green>>8];
+ png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff)
+ >> png_ptr->gamma_shift][blue>>8];
+ png_uint_16 gray16 = (png_uint_16)((rc*red_1 + gc*green_1
+ + bc*blue_1 + 16384)>>15);
+ w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
+ png_ptr->gamma_shift][gray16 >> 8];
+ rgb_error |= 1;
+ }
+
+ *(dp++) = (png_byte)((w>>8) & 0xff);
+ *(dp++) = (png_byte)(w & 0xff);
+
+ if (have_alpha)
+ {
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ }
+ }
+ }
+ else
+#endif
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 red, green, blue, gray16;
+
+ red = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+ green = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+ blue = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
+
+ if (red != green || red != blue)
+ rgb_error |= 1;
+
+ /* From 1.5.5 in the 16 bit case do the accurate conversion even
+ * in the 'fast' case - this is because this is where the code
+ * ends up when handling linear 16 bit data.
+ */
+ gray16 = (png_uint_16)((rc*red + gc*green + bc*blue + 16384) >>
+ 15);
+ *(dp++) = (png_byte)((gray16>>8) & 0xff);
+ *(dp++) = (png_byte)(gray16 & 0xff);
+
+ if (have_alpha)
+ {
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ }
+ }
+ }
+ }
+
+ row_info->channels = (png_byte)(row_info->channels - 2);
+ row_info->color_type = (png_byte)(row_info->color_type &
+ ~PNG_COLOR_MASK_COLOR);
+ row_info->pixel_depth = (png_byte)(row_info->channels *
+ row_info->bit_depth);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+ return rgb_error;
+}
+#endif
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+
+#ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
+/* Build a grayscale palette. Palette is assumed to be 1 << bit_depth
+ * large of png_color. This lets grayscale images be treated as
+ * paletted. Most useful for gamma correction and simplification
+ * of code. This API is not used internally.
+ */
+void PNGAPI
+png_build_grayscale_palette(int bit_depth, png_colorp palette)
+{
+ int num_palette;
+ int color_inc;
+ int i;
+ int v;
+
+ png_debug(1, "in png_do_build_grayscale_palette");
+
+ if (palette == NULL)
+ return;
+
+ switch (bit_depth)
+ {
+ case 1:
+ num_palette = 2;
+ color_inc = 0xff;
+ break;
+
+ case 2:
+ num_palette = 4;
+ color_inc = 0x55;
+ break;
+
+ case 4:
+ num_palette = 16;
+ color_inc = 0x11;
+ break;
+
+ case 8:
+ num_palette = 256;
+ color_inc = 1;
+ break;
+
+ default:
+ num_palette = 0;
+ color_inc = 0;
+ break;
+ }
+
+ for (i = 0, v = 0; i < num_palette; i++, v += color_inc)
+ {
+ palette[i].red = (png_byte)v;
+ palette[i].green = (png_byte)v;
+ palette[i].blue = (png_byte)v;
+ }
+}
+#endif
+
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+/* Replace any alpha or transparency with the supplied background color.
+ * "background" is already in the screen gamma, while "background_1" is
+ * at a gamma of 1.0. Paletted files have already been taken care of.
+ */
+void /* PRIVATE */
+png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
+{
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ png_const_bytep gamma_table = png_ptr->gamma_table;
+ png_const_bytep gamma_from_1 = png_ptr->gamma_from_1;
+ png_const_bytep gamma_to_1 = png_ptr->gamma_to_1;
+ png_const_uint_16pp gamma_16 = png_ptr->gamma_16_table;
+ png_const_uint_16pp gamma_16_from_1 = png_ptr->gamma_16_from_1;
+ png_const_uint_16pp gamma_16_to_1 = png_ptr->gamma_16_to_1;
+ int gamma_shift = png_ptr->gamma_shift;
+ int optimize = (png_ptr->flags & PNG_FLAG_OPTIMIZE_ALPHA) != 0;
+#endif
+
+ png_bytep sp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+ int shift;
+
+ png_debug(1, "in png_do_compose");
+
+ {
+ switch (row_info->color_type)
+ {
+ case PNG_COLOR_TYPE_GRAY:
+ {
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ sp = row;
+ shift = 7;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x01)
+ == png_ptr->trans_color.gray)
+ {
+ unsigned int tmp = *sp & (0x7f7f >> (7 - shift));
+ tmp |= png_ptr->background.gray << shift;
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ if (!shift)
+ {
+ shift = 7;
+ sp++;
+ }
+
+ else
+ shift--;
+ }
+ break;
+ }
+
+ case 2:
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ shift = 6;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x03)
+ == png_ptr->trans_color.gray)
+ {
+ unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
+ tmp |= png_ptr->background.gray << shift;
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ else
+ {
+ unsigned int p = (*sp >> shift) & 0x03;
+ unsigned int g = (gamma_table [p | (p << 2) |
+ (p << 4) | (p << 6)] >> 6) & 0x03;
+ unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
+ tmp |= g << shift;
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ if (!shift)
+ {
+ shift = 6;
+ sp++;
+ }
+
+ else
+ shift -= 2;
+ }
+ }
+
+ else
+#endif
+ {
+ sp = row;
+ shift = 6;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x03)
+ == png_ptr->trans_color.gray)
+ {
+ unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
+ tmp |= png_ptr->background.gray << shift;
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ if (!shift)
+ {
+ shift = 6;
+ sp++;
+ }
+
+ else
+ shift -= 2;
+ }
+ }
+ break;
+ }
+
+ case 4:
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ shift = 4;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x0f)
+ == png_ptr->trans_color.gray)
+ {
+ unsigned int tmp = *sp & (0xf0f >> (4 - shift));
+ tmp |= png_ptr->background.gray << shift;
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ else
+ {
+ unsigned int p = (*sp >> shift) & 0x0f;
+ unsigned int g = (gamma_table[p | (p << 4)] >> 4) &
+ 0x0f;
+ unsigned int tmp = *sp & (0xf0f >> (4 - shift));
+ tmp |= g << shift;
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ if (!shift)
+ {
+ shift = 4;
+ sp++;
+ }
+
+ else
+ shift -= 4;
+ }
+ }
+
+ else
+#endif
+ {
+ sp = row;
+ shift = 4;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x0f)
+ == png_ptr->trans_color.gray)
+ {
+ unsigned int tmp = *sp & (0xf0f >> (4 - shift));
+ tmp |= png_ptr->background.gray << shift;
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ if (!shift)
+ {
+ shift = 4;
+ sp++;
+ }
+
+ else
+ shift -= 4;
+ }
+ }
+ break;
+ }
+
+ case 8:
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp++)
+ {
+ if (*sp == png_ptr->trans_color.gray)
+ *sp = (png_byte)png_ptr->background.gray;
+
+ else
+ *sp = gamma_table[*sp];
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp++)
+ {
+ if (*sp == png_ptr->trans_color.gray)
+ *sp = (png_byte)png_ptr->background.gray;
+ }
+ }
+ break;
+ }
+
+ case 16:
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_16 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
+ {
+ png_uint_16 v;
+
+ v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+
+ if (v == png_ptr->trans_color.gray)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((png_ptr->background.gray >> 8)
+ & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray
+ & 0xff);
+ }
+
+ else
+ {
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
+ {
+ png_uint_16 v;
+
+ v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+
+ if (v == png_ptr->trans_color.gray)
+ {
+ *sp = (png_byte)((png_ptr->background.gray >> 8)
+ & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray
+ & 0xff);
+ }
+ }
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_RGB:
+ {
+ if (row_info->bit_depth == 8)
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 3)
+ {
+ if (*sp == png_ptr->trans_color.red &&
+ *(sp + 1) == png_ptr->trans_color.green &&
+ *(sp + 2) == png_ptr->trans_color.blue)
+ {
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
+ }
+
+ else
+ {
+ *sp = gamma_table[*sp];
+ *(sp + 1) = gamma_table[*(sp + 1)];
+ *(sp + 2) = gamma_table[*(sp + 2)];
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 3)
+ {
+ if (*sp == png_ptr->trans_color.red &&
+ *(sp + 1) == png_ptr->trans_color.green &&
+ *(sp + 2) == png_ptr->trans_color.blue)
+ {
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
+ }
+ }
+ }
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_16 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 6)
+ {
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
+
+ if (r == png_ptr->trans_color.red &&
+ g == png_ptr->trans_color.green &&
+ b == png_ptr->trans_color.blue)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+ & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green
+ & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+ & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
+ }
+
+ else
+ {
+ png_uint_16 v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+
+ v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
+
+ v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
+ }
+ }
+ }
+
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 6)
+ {
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
+
+ if (r == png_ptr->trans_color.red &&
+ g == png_ptr->trans_color.green &&
+ b == png_ptr->trans_color.blue)
+ {
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+ & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green
+ & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+ & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
+ }
+ }
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
+ gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
+ {
+ png_uint_16 a = *(sp + 1);
+
+ if (a == 0xff)
+ *sp = gamma_table[*sp];
+
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)png_ptr->background.gray;
+ }
+
+ else
+ {
+ png_byte v, w;
+
+ v = gamma_to_1[*sp];
+ png_composite(w, v, a, png_ptr->background_1.gray);
+ if (!optimize)
+ w = gamma_from_1[w];
+ *sp = w;
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
+ {
+ png_byte a = *(sp + 1);
+
+ if (a == 0)
+ *sp = (png_byte)png_ptr->background.gray;
+
+ else if (a < 0xff)
+ png_composite(*sp, *sp, a, png_ptr->background.gray);
+ }
+ }
+ }
+ else /* if (png_ptr->bit_depth == 16) */
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
+ gamma_16_to_1 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 4)
+ {
+ png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+
+ if (a == (png_uint_16)0xffff)
+ {
+ png_uint_16 v;
+
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ }
+
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((png_ptr->background.gray >> 8)
+ & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
+ }
+
+ else
+ {
+ png_uint_16 g, v, w;
+
+ g = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
+ png_composite_16(v, g, a, png_ptr->background_1.gray);
+ if (optimize)
+ w = v;
+ else
+ w = gamma_16_from_1[(v&0xff) >> gamma_shift][v >> 8];
+ *sp = (png_byte)((w >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(w & 0xff);
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 4)
+ {
+ png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+
+ if (a == 0)
+ {
+ *sp = (png_byte)((png_ptr->background.gray >> 8)
+ & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
+ }
+
+ else if (a < 0xffff)
+ {
+ png_uint_16 g, v;
+
+ g = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_composite_16(v, g, a, png_ptr->background.gray);
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ }
+ }
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
+ gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 4)
+ {
+ png_byte a = *(sp + 3);
+
+ if (a == 0xff)
+ {
+ *sp = gamma_table[*sp];
+ *(sp + 1) = gamma_table[*(sp + 1)];
+ *(sp + 2) = gamma_table[*(sp + 2)];
+ }
+
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
+ }
+
+ else
+ {
+ png_byte v, w;
+
+ v = gamma_to_1[*sp];
+ png_composite(w, v, a, png_ptr->background_1.red);
+ if (!optimize) w = gamma_from_1[w];
+ *sp = w;
+
+ v = gamma_to_1[*(sp + 1)];
+ png_composite(w, v, a, png_ptr->background_1.green);
+ if (!optimize) w = gamma_from_1[w];
+ *(sp + 1) = w;
+
+ v = gamma_to_1[*(sp + 2)];
+ png_composite(w, v, a, png_ptr->background_1.blue);
+ if (!optimize) w = gamma_from_1[w];
+ *(sp + 2) = w;
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 4)
+ {
+ png_byte a = *(sp + 3);
+
+ if (a == 0)
+ {
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
+ }
+
+ else if (a < 0xff)
+ {
+ png_composite(*sp, *sp, a, png_ptr->background.red);
+
+ png_composite(*(sp + 1), *(sp + 1), a,
+ png_ptr->background.green);
+
+ png_composite(*(sp + 2), *(sp + 2), a,
+ png_ptr->background.blue);
+ }
+ }
+ }
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
+ gamma_16_to_1 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 8)
+ {
+ png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
+ << 8) + (png_uint_16)(*(sp + 7)));
+
+ if (a == (png_uint_16)0xffff)
+ {
+ png_uint_16 v;
+
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+
+ v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
+
+ v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
+ }
+
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+ & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green
+ & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+ & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
+ }
+
+ else
+ {
+ png_uint_16 v, w;
+
+ v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
+ png_composite_16(w, v, a, png_ptr->background_1.red);
+ if (!optimize)
+ w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >>
+ 8];
+ *sp = (png_byte)((w >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(w & 0xff);
+
+ v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ png_composite_16(w, v, a, png_ptr->background_1.green);
+ if (!optimize)
+ w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >>
+ 8];
+
+ *(sp + 2) = (png_byte)((w >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(w & 0xff);
+
+ v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ png_composite_16(w, v, a, png_ptr->background_1.blue);
+ if (!optimize)
+ w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >>
+ 8];
+
+ *(sp + 4) = (png_byte)((w >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(w & 0xff);
+ }
+ }
+ }
+
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 8)
+ {
+ png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
+ << 8) + (png_uint_16)(*(sp + 7)));
+
+ if (a == 0)
+ {
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+ & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green
+ & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+ & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
+ }
+
+ else if (a < 0xffff)
+ {
+ png_uint_16 v;
+
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
+
+ png_composite_16(v, r, a, png_ptr->background.red);
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+
+ png_composite_16(v, g, a, png_ptr->background.green);
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
+
+ png_composite_16(v, b, a, png_ptr->background.blue);
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
+ }
+ }
+ }
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+ }
+}
+#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_READ_ALPHA_MODE_SUPPORTED */
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* Gamma correct the image, avoiding the alpha channel. Make sure
+ * you do this after you deal with the transparency issue on grayscale
+ * or RGB images. If your bit depth is 8, use gamma_table, if it
+ * is 16, use gamma_16_table and gamma_shift. Build these with
+ * build_gamma_table().
+ */
+void /* PRIVATE */
+png_do_gamma(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
+{
+ png_const_bytep gamma_table = png_ptr->gamma_table;
+ png_const_uint_16pp gamma_16_table = png_ptr->gamma_16_table;
+ int gamma_shift = png_ptr->gamma_shift;
+
+ png_bytep sp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ png_debug(1, "in png_do_gamma");
+
+ if (((row_info->bit_depth <= 8 && gamma_table != NULL) ||
+ (row_info->bit_depth == 16 && gamma_16_table != NULL)))
+ {
+ switch (row_info->color_type)
+ {
+ case PNG_COLOR_TYPE_RGB:
+ {
+ if (row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ *sp = gamma_table[*sp];
+ sp++;
+ *sp = gamma_table[*sp];
+ sp++;
+ *sp = gamma_table[*sp];
+ sp++;
+ }
+ }
+
+ else /* if (row_info->bit_depth == 16) */
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 v;
+
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ *sp = gamma_table[*sp];
+ sp++;
+
+ *sp = gamma_table[*sp];
+ sp++;
+
+ *sp = gamma_table[*sp];
+ sp++;
+
+ sp++;
+ }
+ }
+
+ else /* if (row_info->bit_depth == 16) */
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 4;
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ *sp = gamma_table[*sp];
+ sp += 2;
+ }
+ }
+
+ else /* if (row_info->bit_depth == 16) */
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 4;
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_GRAY:
+ {
+ if (row_info->bit_depth == 2)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i += 4)
+ {
+ int a = *sp & 0xc0;
+ int b = *sp & 0x30;
+ int c = *sp & 0x0c;
+ int d = *sp & 0x03;
+
+ *sp = (png_byte)(
+ ((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)]) ) & 0xc0)|
+ ((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)|
+ ((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)|
+ ((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) ));
+ sp++;
+ }
+ }
+
+ if (row_info->bit_depth == 4)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i += 2)
+ {
+ int msb = *sp & 0xf0;
+ int lsb = *sp & 0x0f;
+
+ *sp = (png_byte)((((int)gamma_table[msb | (msb >> 4)]) & 0xf0)
+ | (((int)gamma_table[(lsb << 4) | lsb]) >> 4));
+ sp++;
+ }
+ }
+
+ else if (row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ *sp = gamma_table[*sp];
+ sp++;
+ }
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+ }
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+/* Encode the alpha channel to the output gamma (the input channel is always
+ * linear.) Called only with color types that have an alpha channel. Needs the
+ * from_1 tables.
+ */
+void /* PRIVATE */
+png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
+{
+ png_uint_32 row_width = row_info->width;
+
+ png_debug(1, "in png_do_encode_alpha");
+
+ if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ PNG_CONST png_bytep table = png_ptr->gamma_from_1;
+
+ if (table != NULL)
+ {
+ PNG_CONST int step =
+ (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 4 : 2;
+
+ /* The alpha channel is the last component: */
+ row += step - 1;
+
+ for (; row_width > 0; --row_width, row += step)
+ *row = table[*row];
+
+ return;
+ }
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ PNG_CONST png_uint_16pp table = png_ptr->gamma_16_from_1;
+ PNG_CONST int gamma_shift = png_ptr->gamma_shift;
+
+ if (table != NULL)
+ {
+ PNG_CONST int step =
+ (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 8 : 4;
+
+ /* The alpha channel is the last component: */
+ row += step - 2;
+
+ for (; row_width > 0; --row_width, row += step)
+ {
+ png_uint_16 v;
+
+ v = table[*(row + 1) >> gamma_shift][*row];
+ *row = (png_byte)((v >> 8) & 0xff);
+ *(row + 1) = (png_byte)(v & 0xff);
+ }
+
+ return;
+ }
+ }
+ }
+
+ /* Only get to here if called with a weird row_info; no harm has been done,
+ * so just issue a warning.
+ */
+ png_warning(png_ptr, "png_do_encode_alpha: unexpected call");
+}
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* Expands a palette row to an RGB or RGBA row depending
+ * upon whether you supply trans and num_trans.
+ */
+void /* PRIVATE */
+png_do_expand_palette(png_row_infop row_info, png_bytep row,
+ png_const_colorp palette, png_const_bytep trans_alpha, int num_trans)
+{
+ int shift, value;
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ png_debug(1, "in png_do_expand_palette");
+
+ if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (row_info->bit_depth < 8)
+ {
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ sp = row + (png_size_t)((row_width - 1) >> 3);
+ dp = row + (png_size_t)row_width - 1;
+ shift = 7 - (int)((row_width + 7) & 0x07);
+ for (i = 0; i < row_width; i++)
+ {
+ if ((*sp >> shift) & 0x01)
+ *dp = 1;
+
+ else
+ *dp = 0;
+
+ if (shift == 7)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift++;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 2:
+ {
+ sp = row + (png_size_t)((row_width - 1) >> 2);
+ dp = row + (png_size_t)row_width - 1;
+ shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
+ for (i = 0; i < row_width; i++)
+ {
+ value = (*sp >> shift) & 0x03;
+ *dp = (png_byte)value;
+ if (shift == 6)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift += 2;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 4:
+ {
+ sp = row + (png_size_t)((row_width - 1) >> 1);
+ dp = row + (png_size_t)row_width - 1;
+ shift = (int)((row_width & 0x01) << 2);
+ for (i = 0; i < row_width; i++)
+ {
+ value = (*sp >> shift) & 0x0f;
+ *dp = (png_byte)value;
+ if (shift == 4)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift += 4;
+
+ dp--;
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 8;
+ row_info->rowbytes = row_width;
+ }
+
+ if (row_info->bit_depth == 8)
+ {
+ {
+ if (num_trans > 0)
+ {
+ sp = row + (png_size_t)row_width - 1;
+ dp = row + (png_size_t)(row_width << 2) - 1;
+
+ for (i = 0; i < row_width; i++)
+ {
+ if ((int)(*sp) >= num_trans)
+ *dp-- = 0xff;
+
+ else
+ *dp-- = trans_alpha[*sp];
+
+ *dp-- = palette[*sp].blue;
+ *dp-- = palette[*sp].green;
+ *dp-- = palette[*sp].red;
+ sp--;
+ }
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ row_info->color_type = 6;
+ row_info->channels = 4;
+ }
+
+ else
+ {
+ sp = row + (png_size_t)row_width - 1;
+ dp = row + (png_size_t)(row_width * 3) - 1;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *dp-- = palette[*sp].blue;
+ *dp-- = palette[*sp].green;
+ *dp-- = palette[*sp].red;
+ sp--;
+ }
+
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 24;
+ row_info->rowbytes = row_width * 3;
+ row_info->color_type = 2;
+ row_info->channels = 3;
+ }
+ }
+ }
+ }
+}
+
+/* If the bit depth < 8, it is expanded to 8. Also, if the already
+ * expanded transparency value is supplied, an alpha channel is built.
+ */
+void /* PRIVATE */
+png_do_expand(png_row_infop row_info, png_bytep row,
+ png_const_color_16p trans_color)
+{
+ int shift, value;
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ png_debug(1, "in png_do_expand");
+
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ unsigned int gray = trans_color ? trans_color->gray : 0;
+
+ if (row_info->bit_depth < 8)
+ {
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ gray = (gray & 0x01) * 0xff;
+ sp = row + (png_size_t)((row_width - 1) >> 3);
+ dp = row + (png_size_t)row_width - 1;
+ shift = 7 - (int)((row_width + 7) & 0x07);
+ for (i = 0; i < row_width; i++)
+ {
+ if ((*sp >> shift) & 0x01)
+ *dp = 0xff;
+
+ else
+ *dp = 0;
+
+ if (shift == 7)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift++;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 2:
+ {
+ gray = (gray & 0x03) * 0x55;
+ sp = row + (png_size_t)((row_width - 1) >> 2);
+ dp = row + (png_size_t)row_width - 1;
+ shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
+ for (i = 0; i < row_width; i++)
+ {
+ value = (*sp >> shift) & 0x03;
+ *dp = (png_byte)(value | (value << 2) | (value << 4) |
+ (value << 6));
+ if (shift == 6)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift += 2;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 4:
+ {
+ gray = (gray & 0x0f) * 0x11;
+ sp = row + (png_size_t)((row_width - 1) >> 1);
+ dp = row + (png_size_t)row_width - 1;
+ shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
+ for (i = 0; i < row_width; i++)
+ {
+ value = (*sp >> shift) & 0x0f;
+ *dp = (png_byte)(value | (value << 4));
+ if (shift == 4)
+ {
+ shift = 0;
+ sp--;
+ }
+
+ else
+ shift = 4;
+
+ dp--;
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 8;
+ row_info->rowbytes = row_width;
+ }
+
+ if (trans_color != NULL)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ gray = gray & 0xff;
+ sp = row + (png_size_t)row_width - 1;
+ dp = row + (png_size_t)(row_width << 1) - 1;
+
+ for (i = 0; i < row_width; i++)
+ {
+ if (*sp == gray)
+ *dp-- = 0;
+
+ else
+ *dp-- = 0xff;
+
+ *dp-- = *sp--;
+ }
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ unsigned int gray_high = (gray >> 8) & 0xff;
+ unsigned int gray_low = gray & 0xff;
+ sp = row + row_info->rowbytes - 1;
+ dp = row + (row_info->rowbytes << 1) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*(sp - 1) == gray_high && *(sp) == gray_low)
+ {
+ *dp-- = 0;
+ *dp-- = 0;
+ }
+
+ else
+ {
+ *dp-- = 0xff;
+ *dp-- = 0xff;
+ }
+
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ }
+ }
+
+ row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
+ row_info->channels = 2;
+ row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
+ row_width);
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_color)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ png_byte red = (png_byte)(trans_color->red & 0xff);
+ png_byte green = (png_byte)(trans_color->green & 0xff);
+ png_byte blue = (png_byte)(trans_color->blue & 0xff);
+ sp = row + (png_size_t)row_info->rowbytes - 1;
+ dp = row + (png_size_t)(row_width << 2) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*(sp - 2) == red && *(sp - 1) == green && *(sp) == blue)
+ *dp-- = 0;
+
+ else
+ *dp-- = 0xff;
+
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ png_byte red_high = (png_byte)((trans_color->red >> 8) & 0xff);
+ png_byte green_high = (png_byte)((trans_color->green >> 8) & 0xff);
+ png_byte blue_high = (png_byte)((trans_color->blue >> 8) & 0xff);
+ png_byte red_low = (png_byte)(trans_color->red & 0xff);
+ png_byte green_low = (png_byte)(trans_color->green & 0xff);
+ png_byte blue_low = (png_byte)(trans_color->blue & 0xff);
+ sp = row + row_info->rowbytes - 1;
+ dp = row + (png_size_t)(row_width << 3) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*(sp - 5) == red_high &&
+ *(sp - 4) == red_low &&
+ *(sp - 3) == green_high &&
+ *(sp - 2) == green_low &&
+ *(sp - 1) == blue_high &&
+ *(sp ) == blue_low)
+ {
+ *dp-- = 0;
+ *dp-- = 0;
+ }
+
+ else
+ {
+ *dp-- = 0xff;
+ *dp-- = 0xff;
+ }
+
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ }
+ }
+ row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+ row_info->channels = 4;
+ row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+/* If the bit depth is 8 and the color type is not a palette type expand the
+ * whole row to 16 bits. Has no effect otherwise.
+ */
+void /* PRIVATE */
+png_do_expand_16(png_row_infop row_info, png_bytep row)
+{
+ if (row_info->bit_depth == 8 &&
+ row_info->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ /* The row have a sequence of bytes containing [0..255] and we need
+ * to turn it into another row containing [0..65535], to do this we
+ * calculate:
+ *
+ * (input / 255) * 65535
+ *
+ * Which happens to be exactly input * 257 and this can be achieved
+ * simply by byte replication in place (copying backwards).
+ */
+ png_byte *sp = row + row_info->rowbytes; /* source, last byte + 1 */
+ png_byte *dp = sp + row_info->rowbytes; /* destination, end + 1 */
+ while (dp > sp)
+ dp[-2] = dp[-1] = *--sp, dp -= 2;
+
+ row_info->rowbytes *= 2;
+ row_info->bit_depth = 16;
+ row_info->pixel_depth = (png_byte)(row_info->channels * 16);
+ }
+}
+#endif
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+void /* PRIVATE */
+png_do_quantize(png_row_infop row_info, png_bytep row,
+ png_const_bytep palette_lookup, png_const_bytep quantize_lookup)
+{
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ png_debug(1, "in png_do_quantize");
+
+ if (row_info->bit_depth == 8)
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB && palette_lookup)
+ {
+ int r, g, b, p;
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ r = *sp++;
+ g = *sp++;
+ b = *sp++;
+
+ /* This looks real messy, but the compiler will reduce
+ * it down to a reasonable formula. For example, with
+ * 5 bits per color, we get:
+ * p = (((r >> 3) & 0x1f) << 10) |
+ * (((g >> 3) & 0x1f) << 5) |
+ * ((b >> 3) & 0x1f);
+ */
+ p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) &
+ ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
+ (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
+ (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
+ ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
+ (PNG_QUANTIZE_BLUE_BITS)) |
+ ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
+ ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
+
+ *dp++ = palette_lookup[p];
+ }
+
+ row_info->color_type = PNG_COLOR_TYPE_PALETTE;
+ row_info->channels = 1;
+ row_info->pixel_depth = row_info->bit_depth;
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
+ palette_lookup != NULL)
+ {
+ int r, g, b, p;
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ r = *sp++;
+ g = *sp++;
+ b = *sp++;
+ sp++;
+
+ p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) &
+ ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
+ (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
+ (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
+ ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
+ (PNG_QUANTIZE_BLUE_BITS)) |
+ ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
+ ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
+
+ *dp++ = palette_lookup[p];
+ }
+
+ row_info->color_type = PNG_COLOR_TYPE_PALETTE;
+ row_info->channels = 1;
+ row_info->pixel_depth = row_info->bit_depth;
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
+ quantize_lookup)
+ {
+ sp = row;
+
+ for (i = 0; i < row_width; i++, sp++)
+ {
+ *sp = quantize_lookup[*sp];
+ }
+ }
+ }
+}
+#endif /* PNG_READ_QUANTIZE_SUPPORTED */
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+/* Undoes intrapixel differencing */
+void /* PRIVATE */
+png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_read_intrapixel");
+
+ if (
+ (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ int bytes_per_pixel;
+ png_uint_32 row_width = row_info->width;
+
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ bytes_per_pixel = 3;
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ bytes_per_pixel = 4;
+
+ else
+ return;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
+ {
+ *(rp) = (png_byte)((256 + *rp + *(rp + 1)) & 0xff);
+ *(rp+2) = (png_byte)((256 + *(rp + 2) + *(rp + 1)) & 0xff);
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ bytes_per_pixel = 6;
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ bytes_per_pixel = 8;
+
+ else
+ return;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
+ {
+ png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
+ png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
+ png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
+ png_uint_32 red = (s0 + s1 + 65536) & 0xffff;
+ png_uint_32 blue = (s2 + s1 + 65536) & 0xffff;
+ *(rp ) = (png_byte)((red >> 8) & 0xff);
+ *(rp + 1) = (png_byte)(red & 0xff);
+ *(rp + 4) = (png_byte)((blue >> 8) & 0xff);
+ *(rp + 5) = (png_byte)(blue & 0xff);
+ }
+ }
+ }
+}
+#endif /* PNG_MNG_FEATURES_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrutil.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrutil.c
new file mode 100644
index 0000000..d12395a
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngrutil.c
@@ -0,0 +1,4473 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngrutil.c - utilities to read a PNG file
+ *
+ * Last changed in libpng 1.6.3 [July 18, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file contains routines that are only called from within
+ * libpng itself during the course of reading an image.
+ */
+
+#include "pngpriv.h"
+
+#ifdef PNG_READ_SUPPORTED
+
+png_uint_32 PNGAPI
+png_get_uint_31(png_const_structrp png_ptr, png_const_bytep buf)
+{
+ png_uint_32 uval = png_get_uint_32(buf);
+
+ if (uval > PNG_UINT_31_MAX)
+ png_error(png_ptr, "PNG unsigned integer out of range");
+
+ return (uval);
+}
+
+#if defined(PNG_READ_gAMA_SUPPORTED) || defined(PNG_READ_cHRM_SUPPORTED)
+/* The following is a variation on the above for use with the fixed
+ * point values used for gAMA and cHRM. Instead of png_error it
+ * issues a warning and returns (-1) - an invalid value because both
+ * gAMA and cHRM use *unsigned* integers for fixed point values.
+ */
+#define PNG_FIXED_ERROR (-1)
+
+static png_fixed_point /* PRIVATE */
+png_get_fixed_point(png_structrp png_ptr, png_const_bytep buf)
+{
+ png_uint_32 uval = png_get_uint_32(buf);
+
+ if (uval <= PNG_UINT_31_MAX)
+ return (png_fixed_point)uval; /* known to be in range */
+
+ /* The caller can turn off the warning by passing NULL. */
+ if (png_ptr != NULL)
+ png_warning(png_ptr, "PNG fixed point integer out of range");
+
+ return PNG_FIXED_ERROR;
+}
+#endif
+
+#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
+/* NOTE: the read macros will obscure these definitions, so that if
+ * PNG_USE_READ_MACROS is set the library will not use them internally,
+ * but the APIs will still be available externally.
+ *
+ * The parentheses around "PNGAPI function_name" in the following three
+ * functions are necessary because they allow the macros to co-exist with
+ * these (unused but exported) functions.
+ */
+
+/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
+png_uint_32 (PNGAPI
+png_get_uint_32)(png_const_bytep buf)
+{
+ png_uint_32 uval =
+ ((png_uint_32)(*(buf )) << 24) +
+ ((png_uint_32)(*(buf + 1)) << 16) +
+ ((png_uint_32)(*(buf + 2)) << 8) +
+ ((png_uint_32)(*(buf + 3)) ) ;
+
+ return uval;
+}
+
+/* Grab a signed 32-bit integer from a buffer in big-endian format. The
+ * data is stored in the PNG file in two's complement format and there
+ * is no guarantee that a 'png_int_32' is exactly 32 bits, therefore
+ * the following code does a two's complement to native conversion.
+ */
+png_int_32 (PNGAPI
+png_get_int_32)(png_const_bytep buf)
+{
+ png_uint_32 uval = png_get_uint_32(buf);
+ if ((uval & 0x80000000) == 0) /* non-negative */
+ return uval;
+
+ uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */
+ return -(png_int_32)uval;
+}
+
+/* Grab an unsigned 16-bit integer from a buffer in big-endian format. */
+png_uint_16 (PNGAPI
+png_get_uint_16)(png_const_bytep buf)
+{
+ /* ANSI-C requires an int value to accomodate at least 16 bits so this
+ * works and allows the compiler not to worry about possible narrowing
+ * on 32 bit systems. (Pre-ANSI systems did not make integers smaller
+ * than 16 bits either.)
+ */
+ unsigned int val =
+ ((unsigned int)(*buf) << 8) +
+ ((unsigned int)(*(buf + 1)));
+
+ return (png_uint_16)val;
+}
+
+#endif /* PNG_READ_INT_FUNCTIONS_SUPPORTED */
+
+/* Read and check the PNG file signature */
+void /* PRIVATE */
+png_read_sig(png_structrp png_ptr, png_inforp info_ptr)
+{
+ png_size_t num_checked, num_to_check;
+
+ /* Exit if the user application does not expect a signature. */
+ if (png_ptr->sig_bytes >= 8)
+ return;
+
+ num_checked = png_ptr->sig_bytes;
+ num_to_check = 8 - num_checked;
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ png_ptr->io_state = PNG_IO_READING | PNG_IO_SIGNATURE;
+#endif
+
+ /* The signature must be serialized in a single I/O call. */
+ png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check);
+ png_ptr->sig_bytes = 8;
+
+ if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
+ {
+ if (num_checked < 4 &&
+ png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
+ png_error(png_ptr, "Not a PNG file");
+ else
+ png_error(png_ptr, "PNG file corrupted by ASCII conversion");
+ }
+ if (num_checked < 3)
+ png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
+}
+
+/* Read the chunk header (length + type name).
+ * Put the type name into png_ptr->chunk_name, and return the length.
+ */
+png_uint_32 /* PRIVATE */
+png_read_chunk_header(png_structrp png_ptr)
+{
+ png_byte buf[8];
+ png_uint_32 length;
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR;
+#endif
+
+ /* Read the length and the chunk name.
+ * This must be performed in a single I/O call.
+ */
+ png_read_data(png_ptr, buf, 8);
+ length = png_get_uint_31(png_ptr, buf);
+
+ /* Put the chunk name into png_ptr->chunk_name. */
+ png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4);
+
+ png_debug2(0, "Reading %lx chunk, length = %lu",
+ (unsigned long)png_ptr->chunk_name, (unsigned long)length);
+
+ /* Reset the crc and run it over the chunk name. */
+ png_reset_crc(png_ptr);
+ png_calculate_crc(png_ptr, buf + 4, 4);
+
+ /* Check to see if chunk name is valid. */
+ png_check_chunk_name(png_ptr, png_ptr->chunk_name);
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
+#endif
+
+ return length;
+}
+
+/* Read data, and (optionally) run it through the CRC. */
+void /* PRIVATE */
+png_crc_read(png_structrp png_ptr, png_bytep buf, png_uint_32 length)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_read_data(png_ptr, buf, length);
+ png_calculate_crc(png_ptr, buf, length);
+}
+
+/* Optionally skip data and then check the CRC. Depending on whether we
+ * are reading an ancillary or critical chunk, and how the program has set
+ * things up, we may calculate the CRC on the data and print a message.
+ * Returns '1' if there was a CRC error, '0' otherwise.
+ */
+int /* PRIVATE */
+png_crc_finish(png_structrp png_ptr, png_uint_32 skip)
+{
+ /* The size of the local buffer for inflate is a good guess as to a
+ * reasonable size to use for buffering reads from the application.
+ */
+ while (skip > 0)
+ {
+ png_uint_32 len;
+ png_byte tmpbuf[PNG_INFLATE_BUF_SIZE];
+
+ len = (sizeof tmpbuf);
+ if (len > skip)
+ len = skip;
+ skip -= len;
+
+ png_crc_read(png_ptr, tmpbuf, len);
+ }
+
+ if (png_crc_error(png_ptr))
+ {
+ if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) ?
+ !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) :
+ (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE))
+ {
+ png_chunk_warning(png_ptr, "CRC error");
+ }
+
+ else
+ {
+ png_chunk_benign_error(png_ptr, "CRC error");
+ return (0);
+ }
+
+ return (1);
+ }
+
+ return (0);
+}
+
+/* Compare the CRC stored in the PNG file with that calculated by libpng from
+ * the data it has read thus far.
+ */
+int /* PRIVATE */
+png_crc_error(png_structrp png_ptr)
+{
+ png_byte crc_bytes[4];
+ png_uint_32 crc;
+ int need_crc = 1;
+
+ if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))
+ {
+ if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
+ (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
+ need_crc = 0;
+ }
+
+ else /* critical */
+ {
+ if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
+ need_crc = 0;
+ }
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC;
+#endif
+
+ /* The chunk CRC must be serialized in a single I/O call. */
+ png_read_data(png_ptr, crc_bytes, 4);
+
+ if (need_crc)
+ {
+ crc = png_get_uint_32(crc_bytes);
+ return ((int)(crc != png_ptr->crc));
+ }
+
+ else
+ return (0);
+}
+
+/* Manage the read buffer; this simply reallocates the buffer if it is not small
+ * enough (or if it is not allocated). The routine returns a pointer to the
+ * buffer; if an error occurs and 'warn' is set the routine returns NULL, else
+ * it will call png_error (via png_malloc) on failure. (warn == 2 means
+ * 'silent').
+ */
+static png_bytep
+png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn)
+{
+ png_bytep buffer = png_ptr->read_buffer;
+
+ if (buffer != NULL && new_size > png_ptr->read_buffer_size)
+ {
+ png_ptr->read_buffer = NULL;
+ png_ptr->read_buffer = NULL;
+ png_ptr->read_buffer_size = 0;
+ png_free(png_ptr, buffer);
+ buffer = NULL;
+ }
+
+ if (buffer == NULL)
+ {
+ buffer = png_voidcast(png_bytep, png_malloc_base(png_ptr, new_size));
+
+ if (buffer != NULL)
+ {
+ png_ptr->read_buffer = buffer;
+ png_ptr->read_buffer_size = new_size;
+ }
+
+ else if (warn < 2) /* else silent */
+ {
+#ifdef PNG_WARNINGS_SUPPORTED
+ if (warn)
+ png_chunk_warning(png_ptr, "insufficient memory to read chunk");
+ else
+#endif
+ {
+#ifdef PNG_ERROR_TEXT_SUPPORTED
+ png_chunk_error(png_ptr, "insufficient memory to read chunk");
+#endif
+ }
+ }
+ }
+
+ return buffer;
+}
+
+/* png_inflate_claim: claim the zstream for some nefarious purpose that involves
+ * decompression. Returns Z_OK on success, else a zlib error code. It checks
+ * the owner but, in final release builds, just issues a warning if some other
+ * chunk apparently owns the stream. Prior to release it does a png_error.
+ */
+static int
+png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
+{
+ if (png_ptr->zowner != 0)
+ {
+ char msg[64];
+
+ PNG_STRING_FROM_CHUNK(msg, png_ptr->zowner);
+ /* So the message that results is "<chunk> using zstream"; this is an
+ * internal error, but is very useful for debugging. i18n requirements
+ * are minimal.
+ */
+ (void)png_safecat(msg, (sizeof msg), 4, " using zstream");
+# if PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC
+ png_chunk_warning(png_ptr, msg);
+ png_ptr->zowner = 0;
+# else
+ png_chunk_error(png_ptr, msg);
+# endif
+ }
+
+ /* Implementation note: unlike 'png_deflate_claim' this internal function
+ * does not take the size of the data as an argument. Some efficiency could
+ * be gained by using this when it is known *if* the zlib stream itself does
+ * not record the number; however, this is an illusion: the original writer
+ * of the PNG may have selected a lower window size, and we really must
+ * follow that because, for systems with with limited capabilities, we
+ * would otherwise reject the application's attempts to use a smaller window
+ * size (zlib doesn't have an interface to say "this or lower"!).
+ *
+ * inflateReset2 was added to zlib 1.2.4; before this the window could not be
+ * reset, therefore it is necessary to always allocate the maximum window
+ * size with earlier zlibs just in case later compressed chunks need it.
+ */
+ {
+ int ret; /* zlib return code */
+# if PNG_ZLIB_VERNUM >= 0x1240
+
+# if defined(PNG_SET_OPTION_SUPPORTED) && \
+ defined(PNG_MAXIMUM_INFLATE_WINDOW)
+ int window_bits;
+
+ if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) ==
+ PNG_OPTION_ON)
+ window_bits = 15;
+
+ else
+ window_bits = 0;
+# else
+# define window_bits 0
+# endif
+# endif
+
+ /* Set this for safety, just in case the previous owner left pointers to
+ * memory allocations.
+ */
+ png_ptr->zstream.next_in = NULL;
+ png_ptr->zstream.avail_in = 0;
+ png_ptr->zstream.next_out = NULL;
+ png_ptr->zstream.avail_out = 0;
+
+ if (png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED)
+ {
+# if PNG_ZLIB_VERNUM < 0x1240
+ ret = inflateReset(&png_ptr->zstream);
+# else
+ ret = inflateReset2(&png_ptr->zstream, window_bits);
+# endif
+ }
+
+ else
+ {
+# if PNG_ZLIB_VERNUM < 0x1240
+ ret = inflateInit(&png_ptr->zstream);
+# else
+ ret = inflateInit2(&png_ptr->zstream, window_bits);
+# endif
+
+ if (ret == Z_OK)
+ png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
+ }
+
+ if (ret == Z_OK)
+ png_ptr->zowner = owner;
+
+ else
+ png_zstream_error(png_ptr, ret);
+
+ return ret;
+ }
+
+# ifdef window_bits
+# undef window_bits
+# endif
+}
+
+#ifdef PNG_READ_COMPRESSED_TEXT_SUPPORTED
+/* png_inflate now returns zlib error codes including Z_OK and Z_STREAM_END to
+ * allow the caller to do multiple calls if required. If the 'finish' flag is
+ * set Z_FINISH will be passed to the final inflate() call and Z_STREAM_END must
+ * be returned or there has been a problem, otherwise Z_SYNC_FLUSH is used and
+ * Z_OK or Z_STREAM_END will be returned on success.
+ *
+ * The input and output sizes are updated to the actual amounts of data consumed
+ * or written, not the amount available (as in a z_stream). The data pointers
+ * are not changed, so the next input is (data+input_size) and the next
+ * available output is (output+output_size).
+ */
+static int
+png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish,
+ /* INPUT: */ png_const_bytep input, png_uint_32p input_size_ptr,
+ /* OUTPUT: */ png_bytep output, png_alloc_size_t *output_size_ptr)
+{
+ if (png_ptr->zowner == owner) /* Else not claimed */
+ {
+ int ret;
+ png_alloc_size_t avail_out = *output_size_ptr;
+ png_uint_32 avail_in = *input_size_ptr;
+
+ /* zlib can't necessarily handle more than 65535 bytes at once (i.e. it
+ * can't even necessarily handle 65536 bytes) because the type uInt is
+ * "16 bits or more". Consequently it is necessary to chunk the input to
+ * zlib. This code uses ZLIB_IO_MAX, from pngpriv.h, as the maximum (the
+ * maximum value that can be stored in a uInt.) It is possible to set
+ * ZLIB_IO_MAX to a lower value in pngpriv.h and this may sometimes have
+ * a performance advantage, because it reduces the amount of data accessed
+ * at each step and that may give the OS more time to page it in.
+ */
+ png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input);
+ /* avail_in and avail_out are set below from 'size' */
+ png_ptr->zstream.avail_in = 0;
+ png_ptr->zstream.avail_out = 0;
+
+ /* Read directly into the output if it is available (this is set to
+ * a local buffer below if output is NULL).
+ */
+ if (output != NULL)
+ png_ptr->zstream.next_out = output;
+
+ do
+ {
+ uInt avail;
+ Byte local_buffer[PNG_INFLATE_BUF_SIZE];
+
+ /* zlib INPUT BUFFER */
+ /* The setting of 'avail_in' used to be outside the loop; by setting it
+ * inside it is possible to chunk the input to zlib and simply rely on
+ * zlib to advance the 'next_in' pointer. This allows arbitrary
+ * amounts of data to be passed through zlib at the unavoidable cost of
+ * requiring a window save (memcpy of up to 32768 output bytes)
+ * every ZLIB_IO_MAX input bytes.
+ */
+ avail_in += png_ptr->zstream.avail_in; /* not consumed last time */
+
+ avail = ZLIB_IO_MAX;
+
+ if (avail_in < avail)
+ avail = (uInt)avail_in; /* safe: < than ZLIB_IO_MAX */
+
+ avail_in -= avail;
+ png_ptr->zstream.avail_in = avail;
+
+ /* zlib OUTPUT BUFFER */
+ avail_out += png_ptr->zstream.avail_out; /* not written last time */
+
+ avail = ZLIB_IO_MAX; /* maximum zlib can process */
+
+ if (output == NULL)
+ {
+ /* Reset the output buffer each time round if output is NULL and
+ * make available the full buffer, up to 'remaining_space'
+ */
+ png_ptr->zstream.next_out = local_buffer;
+ if ((sizeof local_buffer) < avail)
+ avail = (sizeof local_buffer);
+ }
+
+ if (avail_out < avail)
+ avail = (uInt)avail_out; /* safe: < ZLIB_IO_MAX */
+
+ png_ptr->zstream.avail_out = avail;
+ avail_out -= avail;
+
+ /* zlib inflate call */
+ /* In fact 'avail_out' may be 0 at this point, that happens at the end
+ * of the read when the final LZ end code was not passed at the end of
+ * the previous chunk of input data. Tell zlib if we have reached the
+ * end of the output buffer.
+ */
+ ret = inflate(&png_ptr->zstream, avail_out > 0 ? Z_NO_FLUSH :
+ (finish ? Z_FINISH : Z_SYNC_FLUSH));
+ } while (ret == Z_OK);
+
+ /* For safety kill the local buffer pointer now */
+ if (output == NULL)
+ png_ptr->zstream.next_out = NULL;
+
+ /* Claw back the 'size' and 'remaining_space' byte counts. */
+ avail_in += png_ptr->zstream.avail_in;
+ avail_out += png_ptr->zstream.avail_out;
+
+ /* Update the input and output sizes; the updated values are the amount
+ * consumed or written, effectively the inverse of what zlib uses.
+ */
+ if (avail_out > 0)
+ *output_size_ptr -= avail_out;
+
+ if (avail_in > 0)
+ *input_size_ptr -= avail_in;
+
+ /* Ensure png_ptr->zstream.msg is set (even in the success case!) */
+ png_zstream_error(png_ptr, ret);
+ return ret;
+ }
+
+ else
+ {
+ /* This is a bad internal error. The recovery assigns to the zstream msg
+ * pointer, which is not owned by the caller, but this is safe; it's only
+ * used on errors!
+ */
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed");
+ return Z_STREAM_ERROR;
+ }
+}
+
+/*
+ * Decompress trailing data in a chunk. The assumption is that read_buffer
+ * points at an allocated area holding the contents of a chunk with a
+ * trailing compressed part. What we get back is an allocated area
+ * holding the original prefix part and an uncompressed version of the
+ * trailing part (the malloc area passed in is freed).
+ */
+static int
+png_decompress_chunk(png_structrp png_ptr,
+ png_uint_32 chunklength, png_uint_32 prefix_size,
+ png_alloc_size_t *newlength /* must be initialized to the maximum! */,
+ int terminate /*add a '\0' to the end of the uncompressed data*/)
+{
+ /* TODO: implement different limits for different types of chunk.
+ *
+ * The caller supplies *newlength set to the maximum length of the
+ * uncompressed data, but this routine allocates space for the prefix and
+ * maybe a '\0' terminator too. We have to assume that 'prefix_size' is
+ * limited only by the maximum chunk size.
+ */
+ png_alloc_size_t limit = PNG_SIZE_MAX;
+
+# ifdef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+ if (png_ptr->user_chunk_malloc_max > 0 &&
+ png_ptr->user_chunk_malloc_max < limit)
+ limit = png_ptr->user_chunk_malloc_max;
+# elif PNG_USER_CHUNK_MALLOC_MAX > 0
+ if (PNG_USER_CHUNK_MALLOC_MAX < limit)
+ limit = PNG_USER_CHUNK_MALLOC_MAX;
+# endif
+
+ if (limit >= prefix_size + (terminate != 0))
+ {
+ int ret;
+
+ limit -= prefix_size + (terminate != 0);
+
+ if (limit < *newlength)
+ *newlength = limit;
+
+ /* Now try to claim the stream. */
+ ret = png_inflate_claim(png_ptr, png_ptr->chunk_name);
+
+ if (ret == Z_OK)
+ {
+ png_uint_32 lzsize = chunklength - prefix_size;
+
+ ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/,
+ /* input: */ png_ptr->read_buffer + prefix_size, &lzsize,
+ /* output: */ NULL, newlength);
+
+ if (ret == Z_STREAM_END)
+ {
+ /* Use 'inflateReset' here, not 'inflateReset2' because this
+ * preserves the previously decided window size (otherwise it would
+ * be necessary to store the previous window size.) In practice
+ * this doesn't matter anyway, because png_inflate will call inflate
+ * with Z_FINISH in almost all cases, so the window will not be
+ * maintained.
+ */
+ if (inflateReset(&png_ptr->zstream) == Z_OK)
+ {
+ /* Because of the limit checks above we know that the new,
+ * expanded, size will fit in a size_t (let alone an
+ * png_alloc_size_t). Use png_malloc_base here to avoid an
+ * extra OOM message.
+ */
+ png_alloc_size_t new_size = *newlength;
+ png_alloc_size_t buffer_size = prefix_size + new_size +
+ (terminate != 0);
+ png_bytep text = png_voidcast(png_bytep, png_malloc_base(png_ptr,
+ buffer_size));
+
+ if (text != NULL)
+ {
+ ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/,
+ png_ptr->read_buffer + prefix_size, &lzsize,
+ text + prefix_size, newlength);
+
+ if (ret == Z_STREAM_END)
+ {
+ if (new_size == *newlength)
+ {
+ if (terminate)
+ text[prefix_size + *newlength] = 0;
+
+ if (prefix_size > 0)
+ memcpy(text, png_ptr->read_buffer, prefix_size);
+
+ {
+ png_bytep old_ptr = png_ptr->read_buffer;
+
+ png_ptr->read_buffer = text;
+ png_ptr->read_buffer_size = buffer_size;
+ text = old_ptr; /* freed below */
+ }
+ }
+
+ else
+ {
+ /* The size changed on the second read, there can be no
+ * guarantee that anything is correct at this point.
+ * The 'msg' pointer has been set to "unexpected end of
+ * LZ stream", which is fine, but return an error code
+ * that the caller won't accept.
+ */
+ ret = PNG_UNEXPECTED_ZLIB_RETURN;
+ }
+ }
+
+ else if (ret == Z_OK)
+ ret = PNG_UNEXPECTED_ZLIB_RETURN; /* for safety */
+
+ /* Free the text pointer (this is the old read_buffer on
+ * success)
+ */
+ png_free(png_ptr, text);
+
+ /* This really is very benign, but it's still an error because
+ * the extra space may otherwise be used as a Trojan Horse.
+ */
+ if (ret == Z_STREAM_END &&
+ chunklength - prefix_size != lzsize)
+ png_chunk_benign_error(png_ptr, "extra compressed data");
+ }
+
+ else
+ {
+ /* Out of memory allocating the buffer */
+ ret = Z_MEM_ERROR;
+ png_zstream_error(png_ptr, Z_MEM_ERROR);
+ }
+ }
+
+ else
+ {
+ /* inflateReset failed, store the error message */
+ png_zstream_error(png_ptr, ret);
+
+ if (ret == Z_STREAM_END)
+ ret = PNG_UNEXPECTED_ZLIB_RETURN;
+ }
+ }
+
+ else if (ret == Z_OK)
+ ret = PNG_UNEXPECTED_ZLIB_RETURN;
+
+ /* Release the claimed stream */
+ png_ptr->zowner = 0;
+ }
+
+ else /* the claim failed */ if (ret == Z_STREAM_END) /* impossible! */
+ ret = PNG_UNEXPECTED_ZLIB_RETURN;
+
+ return ret;
+ }
+
+ else
+ {
+ /* Application/configuration limits exceeded */
+ png_zstream_error(png_ptr, Z_MEM_ERROR);
+ return Z_MEM_ERROR;
+ }
+}
+#endif /* PNG_READ_COMPRESSED_TEXT_SUPPORTED */
+
+#ifdef PNG_READ_iCCP_SUPPORTED
+/* Perform a partial read and decompress, producing 'avail_out' bytes and
+ * reading from the current chunk as required.
+ */
+static int
+png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size,
+ png_uint_32p chunk_bytes, png_bytep next_out, png_alloc_size_t *out_size,
+ int finish)
+{
+ if (png_ptr->zowner == png_ptr->chunk_name)
+ {
+ int ret;
+
+ /* next_in and avail_in must have been initialized by the caller. */
+ png_ptr->zstream.next_out = next_out;
+ png_ptr->zstream.avail_out = 0; /* set in the loop */
+
+ do
+ {
+ if (png_ptr->zstream.avail_in == 0)
+ {
+ if (read_size > *chunk_bytes)
+ read_size = (uInt)*chunk_bytes;
+ *chunk_bytes -= read_size;
+
+ if (read_size > 0)
+ png_crc_read(png_ptr, read_buffer, read_size);
+
+ png_ptr->zstream.next_in = read_buffer;
+ png_ptr->zstream.avail_in = read_size;
+ }
+
+ if (png_ptr->zstream.avail_out == 0)
+ {
+ uInt avail = ZLIB_IO_MAX;
+ if (avail > *out_size)
+ avail = (uInt)*out_size;
+ *out_size -= avail;
+
+ png_ptr->zstream.avail_out = avail;
+ }
+
+ /* Use Z_SYNC_FLUSH when there is no more chunk data to ensure that all
+ * the available output is produced; this allows reading of truncated
+ * streams.
+ */
+ ret = inflate(&png_ptr->zstream,
+ *chunk_bytes > 0 ? Z_NO_FLUSH : (finish ? Z_FINISH : Z_SYNC_FLUSH));
+ }
+ while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0));
+
+ *out_size += png_ptr->zstream.avail_out;
+ png_ptr->zstream.avail_out = 0; /* Should not be required, but is safe */
+
+ /* Ensure the error message pointer is always set: */
+ png_zstream_error(png_ptr, ret);
+ return ret;
+ }
+
+ else
+ {
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed");
+ return Z_STREAM_ERROR;
+ }
+}
+#endif
+
+/* Read and check the IDHR chunk */
+void /* PRIVATE */
+png_handle_IHDR(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_byte buf[13];
+ png_uint_32 width, height;
+ int bit_depth, color_type, compression_type, filter_type;
+ int interlace_type;
+
+ png_debug(1, "in png_handle_IHDR");
+
+ if (png_ptr->mode & PNG_HAVE_IHDR)
+ png_chunk_error(png_ptr, "out of place");
+
+ /* Check the length */
+ if (length != 13)
+ png_chunk_error(png_ptr, "invalid");
+
+ png_ptr->mode |= PNG_HAVE_IHDR;
+
+ png_crc_read(png_ptr, buf, 13);
+ png_crc_finish(png_ptr, 0);
+
+ width = png_get_uint_31(png_ptr, buf);
+ height = png_get_uint_31(png_ptr, buf + 4);
+ bit_depth = buf[8];
+ color_type = buf[9];
+ compression_type = buf[10];
+ filter_type = buf[11];
+ interlace_type = buf[12];
+
+ /* Set internal variables */
+ png_ptr->width = width;
+ png_ptr->height = height;
+ png_ptr->bit_depth = (png_byte)bit_depth;
+ png_ptr->interlaced = (png_byte)interlace_type;
+ png_ptr->color_type = (png_byte)color_type;
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ png_ptr->filter_type = (png_byte)filter_type;
+#endif
+ png_ptr->compression_type = (png_byte)compression_type;
+
+ /* Find number of channels */
+ switch (png_ptr->color_type)
+ {
+ default: /* invalid, png_set_IHDR calls png_error */
+ case PNG_COLOR_TYPE_GRAY:
+ case PNG_COLOR_TYPE_PALETTE:
+ png_ptr->channels = 1;
+ break;
+
+ case PNG_COLOR_TYPE_RGB:
+ png_ptr->channels = 3;
+ break;
+
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ png_ptr->channels = 2;
+ break;
+
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ png_ptr->channels = 4;
+ break;
+ }
+
+ /* Set up other useful info */
+ png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth *
+ png_ptr->channels);
+ png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width);
+ png_debug1(3, "bit_depth = %d", png_ptr->bit_depth);
+ png_debug1(3, "channels = %d", png_ptr->channels);
+ png_debug1(3, "rowbytes = %lu", (unsigned long)png_ptr->rowbytes);
+ png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
+ color_type, interlace_type, compression_type, filter_type);
+}
+
+/* Read and check the palette */
+void /* PRIVATE */
+png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_color palette[PNG_MAX_PALETTE_LENGTH];
+ int num, i;
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ png_colorp pal_ptr;
+#endif
+
+ png_debug(1, "in png_handle_PLTE");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ /* Moved to before the 'after IDAT' check below because otherwise duplicate
+ * PLTE chunks are potentially ignored (the spec says there shall not be more
+ * than one PLTE, the error is not treated as benign, so this check trumps
+ * the requirement that PLTE appears before IDAT.)
+ */
+ else if (png_ptr->mode & PNG_HAVE_PLTE)
+ png_chunk_error(png_ptr, "duplicate");
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ /* This is benign because the non-benign error happened before, when an
+ * IDAT was encountered in a color-mapped image with no PLTE.
+ */
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ png_ptr->mode |= PNG_HAVE_PLTE;
+
+ if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "ignored in grayscale PNG");
+ return;
+ }
+
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
+ if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+#endif
+
+ if (length > 3*PNG_MAX_PALETTE_LENGTH || length % 3)
+ {
+ png_crc_finish(png_ptr, length);
+
+ if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
+ png_chunk_benign_error(png_ptr, "invalid");
+
+ else
+ png_chunk_error(png_ptr, "invalid");
+
+ return;
+ }
+
+ /* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */
+ num = (int)length / 3;
+
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
+ {
+ png_byte buf[3];
+
+ png_crc_read(png_ptr, buf, 3);
+ pal_ptr->red = buf[0];
+ pal_ptr->green = buf[1];
+ pal_ptr->blue = buf[2];
+ }
+#else
+ for (i = 0; i < num; i++)
+ {
+ png_byte buf[3];
+
+ png_crc_read(png_ptr, buf, 3);
+ /* Don't depend upon png_color being any order */
+ palette[i].red = buf[0];
+ palette[i].green = buf[1];
+ palette[i].blue = buf[2];
+ }
+#endif
+
+ /* If we actually need the PLTE chunk (ie for a paletted image), we do
+ * whatever the normal CRC configuration tells us. However, if we
+ * have an RGB image, the PLTE can be considered ancillary, so
+ * we will act as though it is.
+ */
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+#endif
+ {
+ png_crc_finish(png_ptr, 0);
+ }
+
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
+ else if (png_crc_error(png_ptr)) /* Only if we have a CRC error */
+ {
+ /* If we don't want to use the data from an ancillary chunk,
+ * we have two options: an error abort, or a warning and we
+ * ignore the data in this chunk (which should be OK, since
+ * it's considered ancillary for a RGB or RGBA image).
+ *
+ * IMPLEMENTATION NOTE: this is only here because png_crc_finish uses the
+ * chunk type to determine whether to check the ancillary or the critical
+ * flags.
+ */
+ if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE))
+ {
+ if (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)
+ {
+ png_chunk_benign_error(png_ptr, "CRC error");
+ }
+
+ else
+ {
+ png_chunk_warning(png_ptr, "CRC error");
+ return;
+ }
+ }
+
+ /* Otherwise, we (optionally) emit a warning and use the chunk. */
+ else if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN))
+ {
+ png_chunk_warning(png_ptr, "CRC error");
+ }
+ }
+#endif
+
+ /* TODO: png_set_PLTE has the side effect of setting png_ptr->palette to its
+ * own copy of the palette. This has the side effect that when png_start_row
+ * is called (this happens after any call to png_read_update_info) the
+ * info_ptr palette gets changed. This is extremely unexpected and
+ * confusing.
+ *
+ * Fix this by not sharing the palette in this way.
+ */
+ png_set_PLTE(png_ptr, info_ptr, palette, num);
+
+ /* The three chunks, bKGD, hIST and tRNS *must* appear after PLTE and before
+ * IDAT. Prior to 1.6.0 this was not checked; instead the code merely
+ * checked the apparent validity of a tRNS chunk inserted before PLTE on a
+ * palette PNG. 1.6.0 attempts to rigorously follow the standard and
+ * therefore does a benign error if the erroneous condition is detected *and*
+ * cancels the tRNS if the benign error returns. The alternative is to
+ * amend the standard since it would be rather hypocritical of the standards
+ * maintainers to ignore it.
+ */
+#ifdef PNG_READ_tRNS_SUPPORTED
+ if (png_ptr->num_trans > 0 ||
+ (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS) != 0))
+ {
+ /* Cancel this because otherwise it would be used if the transforms
+ * require it. Don't cancel the 'valid' flag because this would prevent
+ * detection of duplicate chunks.
+ */
+ png_ptr->num_trans = 0;
+
+ if (info_ptr != NULL)
+ info_ptr->num_trans = 0;
+
+ png_chunk_benign_error(png_ptr, "tRNS must be after");
+ }
+#endif
+
+#ifdef PNG_READ_hIST_SUPPORTED
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) != 0)
+ png_chunk_benign_error(png_ptr, "hIST must be after");
+#endif
+
+#ifdef PNG_READ_bKGD_SUPPORTED
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD) != 0)
+ png_chunk_benign_error(png_ptr, "bKGD must be after");
+#endif
+}
+
+void /* PRIVATE */
+png_handle_IEND(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_debug(1, "in png_handle_IEND");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR) || !(png_ptr->mode & PNG_HAVE_IDAT))
+ png_chunk_error(png_ptr, "out of place");
+
+ png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND);
+
+ png_crc_finish(png_ptr, length);
+
+ if (length != 0)
+ png_chunk_benign_error(png_ptr, "invalid");
+
+ PNG_UNUSED(info_ptr)
+}
+
+#ifdef PNG_READ_gAMA_SUPPORTED
+void /* PRIVATE */
+png_handle_gAMA(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_fixed_point igamma;
+ png_byte buf[4];
+
+ png_debug(1, "in png_handle_gAMA");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ if (length != 4)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 4);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ igamma = png_get_fixed_point(NULL, buf);
+
+ png_colorspace_set_gamma(png_ptr, &png_ptr->colorspace, igamma);
+ png_colorspace_sync(png_ptr, info_ptr);
+}
+#endif
+
+#ifdef PNG_READ_sBIT_SUPPORTED
+void /* PRIVATE */
+png_handle_sBIT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ unsigned int truelen;
+ png_byte buf[4];
+
+ png_debug(1, "in png_handle_sBIT");
+
+ buf[0] = buf[1] = buf[2] = buf[3] = 0;
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ truelen = 3;
+
+ else
+ truelen = png_ptr->channels;
+
+ if (length != truelen || length > 4)
+ {
+ png_chunk_benign_error(png_ptr, "invalid");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, truelen);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ {
+ png_ptr->sig_bit.red = buf[0];
+ png_ptr->sig_bit.green = buf[1];
+ png_ptr->sig_bit.blue = buf[2];
+ png_ptr->sig_bit.alpha = buf[3];
+ }
+
+ else
+ {
+ png_ptr->sig_bit.gray = buf[0];
+ png_ptr->sig_bit.red = buf[0];
+ png_ptr->sig_bit.green = buf[0];
+ png_ptr->sig_bit.blue = buf[0];
+ png_ptr->sig_bit.alpha = buf[1];
+ }
+
+ png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit));
+}
+#endif
+
+#ifdef PNG_READ_cHRM_SUPPORTED
+void /* PRIVATE */
+png_handle_cHRM(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_byte buf[32];
+ png_xy xy;
+
+ png_debug(1, "in png_handle_cHRM");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ if (length != 32)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 32);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ xy.whitex = png_get_fixed_point(NULL, buf);
+ xy.whitey = png_get_fixed_point(NULL, buf + 4);
+ xy.redx = png_get_fixed_point(NULL, buf + 8);
+ xy.redy = png_get_fixed_point(NULL, buf + 12);
+ xy.greenx = png_get_fixed_point(NULL, buf + 16);
+ xy.greeny = png_get_fixed_point(NULL, buf + 20);
+ xy.bluex = png_get_fixed_point(NULL, buf + 24);
+ xy.bluey = png_get_fixed_point(NULL, buf + 28);
+
+ if (xy.whitex == PNG_FIXED_ERROR ||
+ xy.whitey == PNG_FIXED_ERROR ||
+ xy.redx == PNG_FIXED_ERROR ||
+ xy.redy == PNG_FIXED_ERROR ||
+ xy.greenx == PNG_FIXED_ERROR ||
+ xy.greeny == PNG_FIXED_ERROR ||
+ xy.bluex == PNG_FIXED_ERROR ||
+ xy.bluey == PNG_FIXED_ERROR)
+ {
+ png_chunk_benign_error(png_ptr, "invalid values");
+ return;
+ }
+
+ /* If a colorspace error has already been output skip this chunk */
+ if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID)
+ return;
+
+ if (png_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM)
+ {
+ png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
+ png_colorspace_sync(png_ptr, info_ptr);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ png_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
+ (void)png_colorspace_set_chromaticities(png_ptr, &png_ptr->colorspace, &xy,
+ 1/*prefer cHRM values*/);
+ png_colorspace_sync(png_ptr, info_ptr);
+}
+#endif
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+void /* PRIVATE */
+png_handle_sRGB(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_byte intent;
+
+ png_debug(1, "in png_handle_sRGB");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ if (length != 1)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, &intent, 1);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ /* If a colorspace error has already been output skip this chunk */
+ if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID)
+ return;
+
+ /* Only one sRGB or iCCP chunk is allowed, use the HAVE_INTENT flag to detect
+ * this.
+ */
+ if (png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT)
+ {
+ png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
+ png_colorspace_sync(png_ptr, info_ptr);
+ png_chunk_benign_error(png_ptr, "too many profiles");
+ return;
+ }
+
+ (void)png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent);
+ png_colorspace_sync(png_ptr, info_ptr);
+}
+#endif /* PNG_READ_sRGB_SUPPORTED */
+
+#ifdef PNG_READ_iCCP_SUPPORTED
+void /* PRIVATE */
+png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+/* Note: this does not properly handle profiles that are > 64K under DOS */
+{
+ png_const_charp errmsg = NULL; /* error message output, or no error */
+ int finished = 0; /* crc checked */
+
+ png_debug(1, "in png_handle_iCCP");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ /* Consistent with all the above colorspace handling an obviously *invalid*
+ * chunk is just ignored, so does not invalidate the color space. An
+ * alternative is to set the 'invalid' flags at the start of this routine
+ * and only clear them in they were not set before and all the tests pass.
+ * The minimum 'deflate' stream is assumed to be just the 2 byte header and 4
+ * byte checksum. The keyword must be one character and there is a
+ * terminator (0) byte and the compression method.
+ */
+ if (length < 9)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "too short");
+ return;
+ }
+
+ /* If a colorspace error has already been output skip this chunk */
+ if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ /* Only one sRGB or iCCP chunk is allowed, use the HAVE_INTENT flag to detect
+ * this.
+ */
+ if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) == 0)
+ {
+ uInt read_length, keyword_length;
+ char keyword[81];
+
+ /* Find the keyword; the keyword plus separator and compression method
+ * bytes can be at most 81 characters long.
+ */
+ read_length = 81; /* maximum */
+ if (read_length > length)
+ read_length = (uInt)length;
+
+ png_crc_read(png_ptr, (png_bytep)keyword, read_length);
+ length -= read_length;
+
+ keyword_length = 0;
+ while (keyword_length < 80 && keyword_length < read_length &&
+ keyword[keyword_length] != 0)
+ ++keyword_length;
+
+ /* TODO: make the keyword checking common */
+ if (keyword_length >= 1 && keyword_length <= 79)
+ {
+ /* We only understand '0' compression - deflate - so if we get a
+ * different value we can't safely decode the chunk.
+ */
+ if (keyword_length+1 < read_length &&
+ keyword[keyword_length+1] == PNG_COMPRESSION_TYPE_BASE)
+ {
+ read_length -= keyword_length+2;
+
+ if (png_inflate_claim(png_ptr, png_iCCP) == Z_OK)
+ {
+ Byte profile_header[132];
+ Byte local_buffer[PNG_INFLATE_BUF_SIZE];
+ png_alloc_size_t size = (sizeof profile_header);
+
+ png_ptr->zstream.next_in = (Bytef*)keyword + (keyword_length+2);
+ png_ptr->zstream.avail_in = read_length;
+ (void)png_inflate_read(png_ptr, local_buffer,
+ (sizeof local_buffer), &length, profile_header, &size,
+ 0/*finish: don't, because the output is too small*/);
+
+ if (size == 0)
+ {
+ /* We have the ICC profile header; do the basic header checks.
+ */
+ const png_uint_32 profile_length =
+ png_get_uint_32(profile_header);
+
+ if (png_icc_check_length(png_ptr, &png_ptr->colorspace,
+ keyword, profile_length))
+ {
+ /* The length is apparently ok, so we can check the 132
+ * byte header.
+ */
+ if (png_icc_check_header(png_ptr, &png_ptr->colorspace,
+ keyword, profile_length, profile_header,
+ png_ptr->color_type))
+ {
+ /* Now read the tag table; a variable size buffer is
+ * needed at this point, allocate one for the whole
+ * profile. The header check has already validated
+ * that none of these stuff will overflow.
+ */
+ const png_uint_32 tag_count = png_get_uint_32(
+ profile_header+128);
+ png_bytep profile = png_read_buffer(png_ptr,
+ profile_length, 2/*silent*/);
+
+ if (profile != NULL)
+ {
+ memcpy(profile, profile_header,
+ (sizeof profile_header));
+
+ size = 12 * tag_count;
+
+ (void)png_inflate_read(png_ptr, local_buffer,
+ (sizeof local_buffer), &length,
+ profile + (sizeof profile_header), &size, 0);
+
+ /* Still expect a a buffer error because we expect
+ * there to be some tag data!
+ */
+ if (size == 0)
+ {
+ if (png_icc_check_tag_table(png_ptr,
+ &png_ptr->colorspace, keyword, profile_length,
+ profile))
+ {
+ /* The profile has been validated for basic
+ * security issues, so read the whole thing in.
+ */
+ size = profile_length - (sizeof profile_header)
+ - 12 * tag_count;
+
+ (void)png_inflate_read(png_ptr, local_buffer,
+ (sizeof local_buffer), &length,
+ profile + (sizeof profile_header) +
+ 12 * tag_count, &size, 1/*finish*/);
+
+ if (length > 0 && !(png_ptr->flags &
+ PNG_FLAG_BENIGN_ERRORS_WARN))
+ errmsg = "extra compressed data";
+
+ /* But otherwise allow extra data: */
+ else if (size == 0)
+ {
+ if (length > 0)
+ {
+ /* This can be handled completely, so
+ * keep going.
+ */
+ png_chunk_warning(png_ptr,
+ "extra compressed data");
+ }
+
+ png_crc_finish(png_ptr, length);
+ finished = 1;
+
+# ifdef PNG_sRGB_SUPPORTED
+ /* Check for a match against sRGB */
+ png_icc_set_sRGB(png_ptr,
+ &png_ptr->colorspace, profile,
+ png_ptr->zstream.adler);
+# endif
+
+ /* Steal the profile for info_ptr. */
+ if (info_ptr != NULL)
+ {
+ png_free_data(png_ptr, info_ptr,
+ PNG_FREE_ICCP, 0);
+
+ info_ptr->iccp_name = png_voidcast(char*,
+ png_malloc_base(png_ptr,
+ keyword_length+1));
+ if (info_ptr->iccp_name != NULL)
+ {
+ memcpy(info_ptr->iccp_name, keyword,
+ keyword_length+1);
+ info_ptr->iccp_proflen =
+ profile_length;
+ info_ptr->iccp_profile = profile;
+ png_ptr->read_buffer = NULL; /*steal*/
+ info_ptr->free_me |= PNG_FREE_ICCP;
+ info_ptr->valid |= PNG_INFO_iCCP;
+ }
+
+ else
+ {
+ png_ptr->colorspace.flags |=
+ PNG_COLORSPACE_INVALID;
+ errmsg = "out of memory";
+ }
+ }
+
+ /* else the profile remains in the read
+ * buffer which gets reused for subsequent
+ * chunks.
+ */
+
+ if (info_ptr != NULL)
+ png_colorspace_sync(png_ptr, info_ptr);
+
+ if (errmsg == NULL)
+ {
+ png_ptr->zowner = 0;
+ return;
+ }
+ }
+
+ else if (size > 0)
+ errmsg = "truncated";
+
+ else
+ errmsg = png_ptr->zstream.msg;
+ }
+
+ /* else png_icc_check_tag_table output an error */
+ }
+
+ else /* profile truncated */
+ errmsg = png_ptr->zstream.msg;
+ }
+
+ else
+ errmsg = "out of memory";
+ }
+
+ /* else png_icc_check_header output an error */
+ }
+
+ /* else png_icc_check_length output an error */
+ }
+
+ else /* profile truncated */
+ errmsg = png_ptr->zstream.msg;
+
+ /* Release the stream */
+ png_ptr->zowner = 0;
+ }
+
+ else /* png_inflate_claim failed */
+ errmsg = png_ptr->zstream.msg;
+ }
+
+ else
+ errmsg = "bad compression method"; /* or missing */
+ }
+
+ else
+ errmsg = "bad keyword";
+ }
+
+ else
+ errmsg = "too many profiles";
+
+ /* Failure: the reason is in 'errmsg' */
+ if (!finished)
+ png_crc_finish(png_ptr, length);
+
+ png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
+ png_colorspace_sync(png_ptr, info_ptr);
+ if (errmsg != NULL) /* else already output */
+ png_chunk_benign_error(png_ptr, errmsg);
+}
+#endif /* PNG_READ_iCCP_SUPPORTED */
+
+#ifdef PNG_READ_sPLT_SUPPORTED
+void /* PRIVATE */
+png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+/* Note: this does not properly handle chunks that are > 64K under DOS */
+{
+ png_bytep entry_start, buffer;
+ png_sPLT_t new_palette;
+ png_sPLT_entryp pp;
+ png_uint_32 data_length;
+ int entry_size, i;
+ png_uint_32 skip = 0;
+ png_uint_32 dl;
+ png_size_t max_dl;
+
+ png_debug(1, "in png_handle_sPLT");
+
+#ifdef PNG_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_warning(png_ptr, "No space in chunk cache for sPLT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (length > 65535U)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "too large to fit in memory");
+ return;
+ }
+#endif
+
+ buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
+ if (buffer == NULL)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of memory");
+ return;
+ }
+
+
+ /* WARNING: this may break if size_t is less than 32 bits; it is assumed
+ * that the PNG_MAX_MALLOC_64K test is enabled in this case, but this is a
+ * potential breakage point if the types in pngconf.h aren't exactly right.
+ */
+ png_crc_read(png_ptr, buffer, length);
+
+ if (png_crc_finish(png_ptr, skip))
+ return;
+
+ buffer[length] = 0;
+
+ for (entry_start = buffer; *entry_start; entry_start++)
+ /* Empty loop to find end of name */ ;
+
+ ++entry_start;
+
+ /* A sample depth should follow the separator, and we should be on it */
+ if (entry_start > buffer + length - 2)
+ {
+ png_warning(png_ptr, "malformed sPLT chunk");
+ return;
+ }
+
+ new_palette.depth = *entry_start++;
+ entry_size = (new_palette.depth == 8 ? 6 : 10);
+ /* This must fit in a png_uint_32 because it is derived from the original
+ * chunk data length.
+ */
+ data_length = length - (png_uint_32)(entry_start - buffer);
+
+ /* Integrity-check the data length */
+ if (data_length % entry_size)
+ {
+ png_warning(png_ptr, "sPLT chunk has bad length");
+ return;
+ }
+
+ dl = (png_int_32)(data_length / entry_size);
+ max_dl = PNG_SIZE_MAX / (sizeof (png_sPLT_entry));
+
+ if (dl > max_dl)
+ {
+ png_warning(png_ptr, "sPLT chunk too long");
+ return;
+ }
+
+ new_palette.nentries = (png_int_32)(data_length / entry_size);
+
+ new_palette.entries = (png_sPLT_entryp)png_malloc_warn(
+ png_ptr, new_palette.nentries * (sizeof (png_sPLT_entry)));
+
+ if (new_palette.entries == NULL)
+ {
+ png_warning(png_ptr, "sPLT chunk requires too much memory");
+ return;
+ }
+
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ for (i = 0; i < new_palette.nentries; i++)
+ {
+ pp = new_palette.entries + i;
+
+ if (new_palette.depth == 8)
+ {
+ pp->red = *entry_start++;
+ pp->green = *entry_start++;
+ pp->blue = *entry_start++;
+ pp->alpha = *entry_start++;
+ }
+
+ else
+ {
+ pp->red = png_get_uint_16(entry_start); entry_start += 2;
+ pp->green = png_get_uint_16(entry_start); entry_start += 2;
+ pp->blue = png_get_uint_16(entry_start); entry_start += 2;
+ pp->alpha = png_get_uint_16(entry_start); entry_start += 2;
+ }
+
+ pp->frequency = png_get_uint_16(entry_start); entry_start += 2;
+ }
+#else
+ pp = new_palette.entries;
+
+ for (i = 0; i < new_palette.nentries; i++)
+ {
+
+ if (new_palette.depth == 8)
+ {
+ pp[i].red = *entry_start++;
+ pp[i].green = *entry_start++;
+ pp[i].blue = *entry_start++;
+ pp[i].alpha = *entry_start++;
+ }
+
+ else
+ {
+ pp[i].red = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].green = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].blue = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].alpha = png_get_uint_16(entry_start); entry_start += 2;
+ }
+
+ pp[i].frequency = png_get_uint_16(entry_start); entry_start += 2;
+ }
+#endif
+
+ /* Discard all chunk data except the name and stash that */
+ new_palette.name = (png_charp)buffer;
+
+ png_set_sPLT(png_ptr, info_ptr, &new_palette, 1);
+
+ png_free(png_ptr, new_palette.entries);
+}
+#endif /* PNG_READ_sPLT_SUPPORTED */
+
+#ifdef PNG_READ_tRNS_SUPPORTED
+void /* PRIVATE */
+png_handle_tRNS(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_byte readbuf[PNG_MAX_PALETTE_LENGTH];
+
+ png_debug(1, "in png_handle_tRNS");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ png_byte buf[2];
+
+ if (length != 2)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 2);
+ png_ptr->num_trans = 1;
+ png_ptr->trans_color.gray = png_get_uint_16(buf);
+ }
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ png_byte buf[6];
+
+ if (length != 6)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, length);
+ png_ptr->num_trans = 1;
+ png_ptr->trans_color.red = png_get_uint_16(buf);
+ png_ptr->trans_color.green = png_get_uint_16(buf + 2);
+ png_ptr->trans_color.blue = png_get_uint_16(buf + 4);
+ }
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (!(png_ptr->mode & PNG_HAVE_PLTE))
+ {
+ /* TODO: is this actually an error in the ISO spec? */
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ if (length > png_ptr->num_palette || length > PNG_MAX_PALETTE_LENGTH ||
+ length == 0)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, readbuf, length);
+ png_ptr->num_trans = (png_uint_16)length;
+ }
+
+ else
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid with alpha channel");
+ return;
+ }
+
+ if (png_crc_finish(png_ptr, 0))
+ {
+ png_ptr->num_trans = 0;
+ return;
+ }
+
+ /* TODO: this is a horrible side effect in the palette case because the
+ * png_struct ends up with a pointer to the tRNS buffer owned by the
+ * png_info. Fix this.
+ */
+ png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
+ &(png_ptr->trans_color));
+}
+#endif
+
+#ifdef PNG_READ_bKGD_SUPPORTED
+void /* PRIVATE */
+png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ unsigned int truelen;
+ png_byte buf[6];
+ png_color_16 background;
+
+ png_debug(1, "in png_handle_bKGD");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if ((png_ptr->mode & PNG_HAVE_IDAT) ||
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ !(png_ptr->mode & PNG_HAVE_PLTE)))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ truelen = 1;
+
+ else if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ truelen = 6;
+
+ else
+ truelen = 2;
+
+ if (length != truelen)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, truelen);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ /* We convert the index value into RGB components so that we can allow
+ * arbitrary RGB values for background when we have transparency, and
+ * so it is easy to determine the RGB values of the background color
+ * from the info_ptr struct.
+ */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ background.index = buf[0];
+
+ if (info_ptr && info_ptr->num_palette)
+ {
+ if (buf[0] >= info_ptr->num_palette)
+ {
+ png_chunk_benign_error(png_ptr, "invalid index");
+ return;
+ }
+
+ background.red = (png_uint_16)png_ptr->palette[buf[0]].red;
+ background.green = (png_uint_16)png_ptr->palette[buf[0]].green;
+ background.blue = (png_uint_16)png_ptr->palette[buf[0]].blue;
+ }
+
+ else
+ background.red = background.green = background.blue = 0;
+
+ background.gray = 0;
+ }
+
+ else if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR)) /* GRAY */
+ {
+ background.index = 0;
+ background.red =
+ background.green =
+ background.blue =
+ background.gray = png_get_uint_16(buf);
+ }
+
+ else
+ {
+ background.index = 0;
+ background.red = png_get_uint_16(buf);
+ background.green = png_get_uint_16(buf + 2);
+ background.blue = png_get_uint_16(buf + 4);
+ background.gray = 0;
+ }
+
+ png_set_bKGD(png_ptr, info_ptr, &background);
+}
+#endif
+
+#ifdef PNG_READ_hIST_SUPPORTED
+void /* PRIVATE */
+png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ unsigned int num, i;
+ png_uint_16 readbuf[PNG_MAX_PALETTE_LENGTH];
+
+ png_debug(1, "in png_handle_hIST");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if ((png_ptr->mode & PNG_HAVE_IDAT) || !(png_ptr->mode & PNG_HAVE_PLTE))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ num = length / 2 ;
+
+ if (num != png_ptr->num_palette || num > PNG_MAX_PALETTE_LENGTH)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ for (i = 0; i < num; i++)
+ {
+ png_byte buf[2];
+
+ png_crc_read(png_ptr, buf, 2);
+ readbuf[i] = png_get_uint_16(buf);
+ }
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ png_set_hIST(png_ptr, info_ptr, readbuf);
+}
+#endif
+
+#ifdef PNG_READ_pHYs_SUPPORTED
+void /* PRIVATE */
+png_handle_pHYs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_byte buf[9];
+ png_uint_32 res_x, res_y;
+ int unit_type;
+
+ png_debug(1, "in png_handle_pHYs");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ if (length != 9)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 9);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ res_x = png_get_uint_32(buf);
+ res_y = png_get_uint_32(buf + 4);
+ unit_type = buf[8];
+ png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type);
+}
+#endif
+
+#ifdef PNG_READ_oFFs_SUPPORTED
+void /* PRIVATE */
+png_handle_oFFs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_byte buf[9];
+ png_int_32 offset_x, offset_y;
+ int unit_type;
+
+ png_debug(1, "in png_handle_oFFs");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ if (length != 9)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 9);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ offset_x = png_get_int_32(buf);
+ offset_y = png_get_int_32(buf + 4);
+ unit_type = buf[8];
+ png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type);
+}
+#endif
+
+#ifdef PNG_READ_pCAL_SUPPORTED
+/* Read the pCAL chunk (described in the PNG Extensions document) */
+void /* PRIVATE */
+png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_int_32 X0, X1;
+ png_byte type, nparams;
+ png_bytep buffer, buf, units, endptr;
+ png_charpp params;
+ int i;
+
+ png_debug(1, "in png_handle_pCAL");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ png_debug1(2, "Allocating and reading pCAL chunk data (%u bytes)",
+ length + 1);
+
+ buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
+
+ if (buffer == NULL)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of memory");
+ return;
+ }
+
+ png_crc_read(png_ptr, buffer, length);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ buffer[length] = 0; /* Null terminate the last string */
+
+ png_debug(3, "Finding end of pCAL purpose string");
+ for (buf = buffer; *buf; buf++)
+ /* Empty loop */ ;
+
+ endptr = buffer + length;
+
+ /* We need to have at least 12 bytes after the purpose string
+ * in order to get the parameter information.
+ */
+ if (endptr <= buf + 12)
+ {
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_debug(3, "Reading pCAL X0, X1, type, nparams, and units");
+ X0 = png_get_int_32((png_bytep)buf+1);
+ X1 = png_get_int_32((png_bytep)buf+5);
+ type = buf[9];
+ nparams = buf[10];
+ units = buf + 11;
+
+ png_debug(3, "Checking pCAL equation type and number of parameters");
+ /* Check that we have the right number of parameters for known
+ * equation types.
+ */
+ if ((type == PNG_EQUATION_LINEAR && nparams != 2) ||
+ (type == PNG_EQUATION_BASE_E && nparams != 3) ||
+ (type == PNG_EQUATION_ARBITRARY && nparams != 3) ||
+ (type == PNG_EQUATION_HYPERBOLIC && nparams != 4))
+ {
+ png_chunk_benign_error(png_ptr, "invalid parameter count");
+ return;
+ }
+
+ else if (type >= PNG_EQUATION_LAST)
+ {
+ png_chunk_benign_error(png_ptr, "unrecognized equation type");
+ }
+
+ for (buf = units; *buf; buf++)
+ /* Empty loop to move past the units string. */ ;
+
+ png_debug(3, "Allocating pCAL parameters array");
+
+ params = png_voidcast(png_charpp, png_malloc_warn(png_ptr,
+ nparams * (sizeof (png_charp))));
+
+ if (params == NULL)
+ {
+ png_chunk_benign_error(png_ptr, "out of memory");
+ return;
+ }
+
+ /* Get pointers to the start of each parameter string. */
+ for (i = 0; i < nparams; i++)
+ {
+ buf++; /* Skip the null string terminator from previous parameter. */
+
+ png_debug1(3, "Reading pCAL parameter %d", i);
+
+ for (params[i] = (png_charp)buf; buf <= endptr && *buf != 0; buf++)
+ /* Empty loop to move past each parameter string */ ;
+
+ /* Make sure we haven't run out of data yet */
+ if (buf > endptr)
+ {
+ png_free(png_ptr, params);
+ png_chunk_benign_error(png_ptr, "invalid data");
+ return;
+ }
+ }
+
+ png_set_pCAL(png_ptr, info_ptr, (png_charp)buffer, X0, X1, type, nparams,
+ (png_charp)units, params);
+
+ png_free(png_ptr, params);
+}
+#endif
+
+#ifdef PNG_READ_sCAL_SUPPORTED
+/* Read the sCAL chunk */
+void /* PRIVATE */
+png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_bytep buffer;
+ png_size_t i;
+ int state;
+
+ png_debug(1, "in png_handle_sCAL");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of place");
+ return;
+ }
+
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ /* Need unit type, width, \0, height: minimum 4 bytes */
+ else if (length < 4)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_debug1(2, "Allocating and reading sCAL chunk data (%u bytes)",
+ length + 1);
+
+ buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
+
+ if (buffer == NULL)
+ {
+ png_chunk_benign_error(png_ptr, "out of memory");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buffer, length);
+ buffer[length] = 0; /* Null terminate the last string */
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ /* Validate the unit. */
+ if (buffer[0] != 1 && buffer[0] != 2)
+ {
+ png_chunk_benign_error(png_ptr, "invalid unit");
+ return;
+ }
+
+ /* Validate the ASCII numbers, need two ASCII numbers separated by
+ * a '\0' and they need to fit exactly in the chunk data.
+ */
+ i = 1;
+ state = 0;
+
+ if (!png_check_fp_number((png_const_charp)buffer, length, &state, &i) ||
+ i >= length || buffer[i++] != 0)
+ png_chunk_benign_error(png_ptr, "bad width format");
+
+ else if (!PNG_FP_IS_POSITIVE(state))
+ png_chunk_benign_error(png_ptr, "non-positive width");
+
+ else
+ {
+ png_size_t heighti = i;
+
+ state = 0;
+ if (!png_check_fp_number((png_const_charp)buffer, length, &state, &i) ||
+ i != length)
+ png_chunk_benign_error(png_ptr, "bad height format");
+
+ else if (!PNG_FP_IS_POSITIVE(state))
+ png_chunk_benign_error(png_ptr, "non-positive height");
+
+ else
+ /* This is the (only) success case. */
+ png_set_sCAL_s(png_ptr, info_ptr, buffer[0],
+ (png_charp)buffer+1, (png_charp)buffer+heighti);
+ }
+}
+#endif
+
+#ifdef PNG_READ_tIME_SUPPORTED
+void /* PRIVATE */
+png_handle_tIME(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_byte buf[7];
+ png_time mod_time;
+
+ png_debug(1, "in png_handle_tIME");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME))
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+ if (length != 7)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "invalid");
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 7);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ mod_time.second = buf[6];
+ mod_time.minute = buf[5];
+ mod_time.hour = buf[4];
+ mod_time.day = buf[3];
+ mod_time.month = buf[2];
+ mod_time.year = png_get_uint_16(buf);
+
+ png_set_tIME(png_ptr, info_ptr, &mod_time);
+}
+#endif
+
+#ifdef PNG_READ_tEXt_SUPPORTED
+/* Note: this does not properly handle chunks that are > 64K under DOS */
+void /* PRIVATE */
+png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_text text_info;
+ png_bytep buffer;
+ png_charp key;
+ png_charp text;
+ png_uint_32 skip = 0;
+
+ png_debug(1, "in png_handle_tEXt");
+
+#ifdef PNG_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "no space in chunk cache");
+ return;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (length > 65535U)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "too large to fit in memory");
+ return;
+ }
+#endif
+
+ buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/);
+
+ if (buffer == NULL)
+ {
+ png_chunk_benign_error(png_ptr, "out of memory");
+ return;
+ }
+
+ png_crc_read(png_ptr, buffer, length);
+
+ if (png_crc_finish(png_ptr, skip))
+ return;
+
+ key = (png_charp)buffer;
+ key[length] = 0;
+
+ for (text = key; *text; text++)
+ /* Empty loop to find end of key */ ;
+
+ if (text != key + length)
+ text++;
+
+ text_info.compression = PNG_TEXT_COMPRESSION_NONE;
+ text_info.key = key;
+ text_info.lang = NULL;
+ text_info.lang_key = NULL;
+ text_info.itxt_length = 0;
+ text_info.text = text;
+ text_info.text_length = strlen(text);
+
+ if (png_set_text_2(png_ptr, info_ptr, &text_info, 1))
+ png_warning(png_ptr, "Insufficient memory to process text chunk");
+}
+#endif
+
+#ifdef PNG_READ_zTXt_SUPPORTED
+/* Note: this does not correctly handle chunks that are > 64K under DOS */
+void /* PRIVATE */
+png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_const_charp errmsg = NULL;
+ png_bytep buffer;
+ png_uint_32 keyword_length;
+
+ png_debug(1, "in png_handle_zTXt");
+
+#ifdef PNG_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "no space in chunk cache");
+ return;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+ buffer = png_read_buffer(png_ptr, length, 2/*silent*/);
+
+ if (buffer == NULL)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of memory");
+ return;
+ }
+
+ png_crc_read(png_ptr, buffer, length);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ /* TODO: also check that the keyword contents match the spec! */
+ for (keyword_length = 0;
+ keyword_length < length && buffer[keyword_length] != 0;
+ ++keyword_length)
+ /* Empty loop to find end of name */ ;
+
+ if (keyword_length > 79 || keyword_length < 1)
+ errmsg = "bad keyword";
+
+ /* zTXt must have some LZ data after the keyword, although it may expand to
+ * zero bytes; we need a '\0' at the end of the keyword, the compression type
+ * then the LZ data:
+ */
+ else if (keyword_length + 3 > length)
+ errmsg = "truncated";
+
+ else if (buffer[keyword_length+1] != PNG_COMPRESSION_TYPE_BASE)
+ errmsg = "unknown compression type";
+
+ else
+ {
+ png_alloc_size_t uncompressed_length = PNG_SIZE_MAX;
+
+ /* TODO: at present png_decompress_chunk imposes a single application
+ * level memory limit, this should be split to different values for iCCP
+ * and text chunks.
+ */
+ if (png_decompress_chunk(png_ptr, length, keyword_length+2,
+ &uncompressed_length, 1/*terminate*/) == Z_STREAM_END)
+ {
+ png_text text;
+
+ /* It worked; png_ptr->read_buffer now looks like a tEXt chunk except
+ * for the extra compression type byte and the fact that it isn't
+ * necessarily '\0' terminated.
+ */
+ buffer = png_ptr->read_buffer;
+ buffer[uncompressed_length+(keyword_length+2)] = 0;
+
+ text.compression = PNG_TEXT_COMPRESSION_zTXt;
+ text.key = (png_charp)buffer;
+ text.text = (png_charp)(buffer + keyword_length+2);
+ text.text_length = uncompressed_length;
+ text.itxt_length = 0;
+ text.lang = NULL;
+ text.lang_key = NULL;
+
+ if (png_set_text_2(png_ptr, info_ptr, &text, 1))
+ errmsg = "insufficient memory";
+ }
+
+ else
+ errmsg = png_ptr->zstream.msg;
+ }
+
+ if (errmsg != NULL)
+ png_chunk_benign_error(png_ptr, errmsg);
+}
+#endif
+
+#ifdef PNG_READ_iTXt_SUPPORTED
+/* Note: this does not correctly handle chunks that are > 64K under DOS */
+void /* PRIVATE */
+png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ png_const_charp errmsg = NULL;
+ png_bytep buffer;
+ png_uint_32 prefix_length;
+
+ png_debug(1, "in png_handle_iTXt");
+
+#ifdef PNG_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "no space in chunk cache");
+ return;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+ buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/);
+
+ if (buffer == NULL)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of memory");
+ return;
+ }
+
+ png_crc_read(png_ptr, buffer, length);
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ /* First the keyword. */
+ for (prefix_length=0;
+ prefix_length < length && buffer[prefix_length] != 0;
+ ++prefix_length)
+ /* Empty loop */ ;
+
+ /* Perform a basic check on the keyword length here. */
+ if (prefix_length > 79 || prefix_length < 1)
+ errmsg = "bad keyword";
+
+ /* Expect keyword, compression flag, compression type, language, translated
+ * keyword (both may be empty but are 0 terminated) then the text, which may
+ * be empty.
+ */
+ else if (prefix_length + 5 > length)
+ errmsg = "truncated";
+
+ else if (buffer[prefix_length+1] == 0 ||
+ (buffer[prefix_length+1] == 1 &&
+ buffer[prefix_length+2] == PNG_COMPRESSION_TYPE_BASE))
+ {
+ int compressed = buffer[prefix_length+1] != 0;
+ png_uint_32 language_offset, translated_keyword_offset;
+ png_alloc_size_t uncompressed_length = 0;
+
+ /* Now the language tag */
+ prefix_length += 3;
+ language_offset = prefix_length;
+
+ for (; prefix_length < length && buffer[prefix_length] != 0;
+ ++prefix_length)
+ /* Empty loop */ ;
+
+ /* WARNING: the length may be invalid here, this is checked below. */
+ translated_keyword_offset = ++prefix_length;
+
+ for (; prefix_length < length && buffer[prefix_length] != 0;
+ ++prefix_length)
+ /* Empty loop */ ;
+
+ /* prefix_length should now be at the trailing '\0' of the translated
+ * keyword, but it may already be over the end. None of this arithmetic
+ * can overflow because chunks are at most 2^31 bytes long, but on 16-bit
+ * systems the available allocaton may overflow.
+ */
+ ++prefix_length;
+
+ if (!compressed && prefix_length <= length)
+ uncompressed_length = length - prefix_length;
+
+ else if (compressed && prefix_length < length)
+ {
+ uncompressed_length = PNG_SIZE_MAX;
+
+ /* TODO: at present png_decompress_chunk imposes a single application
+ * level memory limit, this should be split to different values for
+ * iCCP and text chunks.
+ */
+ if (png_decompress_chunk(png_ptr, length, prefix_length,
+ &uncompressed_length, 1/*terminate*/) == Z_STREAM_END)
+ buffer = png_ptr->read_buffer;
+
+ else
+ errmsg = png_ptr->zstream.msg;
+ }
+
+ else
+ errmsg = "truncated";
+
+ if (errmsg == NULL)
+ {
+ png_text text;
+
+ buffer[uncompressed_length+prefix_length] = 0;
+
+ if (compressed)
+ text.compression = PNG_ITXT_COMPRESSION_NONE;
+
+ else
+ text.compression = PNG_ITXT_COMPRESSION_zTXt;
+
+ text.key = (png_charp)buffer;
+ text.lang = (png_charp)buffer + language_offset;
+ text.lang_key = (png_charp)buffer + translated_keyword_offset;
+ text.text = (png_charp)buffer + prefix_length;
+ text.text_length = 0;
+ text.itxt_length = uncompressed_length;
+
+ if (png_set_text_2(png_ptr, info_ptr, &text, 1))
+ errmsg = "insufficient memory";
+ }
+ }
+
+ else
+ errmsg = "bad compression info";
+
+ if (errmsg != NULL)
+ png_chunk_benign_error(png_ptr, errmsg);
+}
+#endif
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+/* Utility function for png_handle_unknown; set up png_ptr::unknown_chunk */
+static int
+png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length)
+{
+ png_alloc_size_t limit = PNG_SIZE_MAX;
+
+ if (png_ptr->unknown_chunk.data != NULL)
+ {
+ png_free(png_ptr, png_ptr->unknown_chunk.data);
+ png_ptr->unknown_chunk.data = NULL;
+ }
+
+# ifdef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+ if (png_ptr->user_chunk_malloc_max > 0 &&
+ png_ptr->user_chunk_malloc_max < limit)
+ limit = png_ptr->user_chunk_malloc_max;
+
+# elif PNG_USER_CHUNK_MALLOC_MAX > 0
+ if (PNG_USER_CHUNK_MALLOC_MAX < limit)
+ limit = PNG_USER_CHUNK_MALLOC_MAX;
+# endif
+
+ if (length <= limit)
+ {
+ PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name);
+ /* The following is safe because of the PNG_SIZE_MAX init above */
+ png_ptr->unknown_chunk.size = (png_size_t)length/*SAFE*/;
+ /* 'mode' is a flag array, only the bottom four bits matter here */
+ png_ptr->unknown_chunk.location = (png_byte)png_ptr->mode/*SAFE*/;
+
+ if (length == 0)
+ png_ptr->unknown_chunk.data = NULL;
+
+ else
+ {
+ /* Do a 'warn' here - it is handled below. */
+ png_ptr->unknown_chunk.data = png_voidcast(png_bytep,
+ png_malloc_warn(png_ptr, length));
+ }
+ }
+
+ if (png_ptr->unknown_chunk.data == NULL && length > 0)
+ {
+ /* This is benign because we clean up correctly */
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "unknown chunk exceeds memory limits");
+ return 0;
+ }
+
+ else
+ {
+ if (length > 0)
+ png_crc_read(png_ptr, png_ptr->unknown_chunk.data, length);
+ png_crc_finish(png_ptr, 0);
+ return 1;
+ }
+}
+#endif /* PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */
+
+/* Handle an unknown, or known but disabled, chunk */
+void /* PRIVATE */
+png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
+ png_uint_32 length, int keep)
+{
+ int handled = 0; /* the chunk was handled */
+
+ png_debug(1, "in png_handle_unknown");
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+ /* NOTE: this code is based on the code in libpng-1.4.12 except for fixing
+ * the bug which meant that setting a non-default behavior for a specific
+ * chunk would be ignored (the default was always used unless a user
+ * callback was installed).
+ *
+ * 'keep' is the value from the png_chunk_unknown_handling, the setting for
+ * this specific chunk_name, if PNG_HANDLE_AS_UNKNOWN_SUPPORTED, if not it
+ * will always be PNG_HANDLE_CHUNK_AS_DEFAULT and it needs to be set here.
+ * This is just an optimization to avoid multiple calls to the lookup
+ * function.
+ */
+# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+# ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+ keep = png_chunk_unknown_handling(png_ptr, png_ptr->chunk_name);
+# endif
+# endif
+
+ /* One of the following methods will read the chunk or skip it (at least one
+ * of these is always defined because this is the only way to switch on
+ * PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+ */
+# ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+ /* The user callback takes precedence over the chunk keep value, but the
+ * keep value is still required to validate a save of a critical chunk.
+ */
+ if (png_ptr->read_user_chunk_fn != NULL)
+ {
+ if (png_cache_unknown_chunk(png_ptr, length))
+ {
+ /* Callback to user unknown chunk handler */
+ int ret = (*(png_ptr->read_user_chunk_fn))(png_ptr,
+ &png_ptr->unknown_chunk);
+
+ /* ret is:
+ * negative: An error occured, png_chunk_error will be called.
+ * zero: The chunk was not handled, the chunk will be discarded
+ * unless png_set_keep_unknown_chunks has been used to set
+ * a 'keep' behavior for this particular chunk, in which
+ * case that will be used. A critical chunk will cause an
+ * error at this point unless it is to be saved.
+ * positive: The chunk was handled, libpng will ignore/discard it.
+ */
+ if (ret < 0)
+ png_chunk_error(png_ptr, "error in user chunk");
+
+ else if (ret == 0)
+ {
+ /* If the keep value is 'default' or 'never' override it, but
+ * still error out on critical chunks unless the keep value is
+ * 'always' While this is weird it is the behavior in 1.4.12.
+ * A possible improvement would be to obey the value set for the
+ * chunk, but this would be an API change that would probably
+ * damage some applications.
+ *
+ * The png_app_warning below catches the case that matters, where
+ * the application has not set specific save or ignore for this
+ * chunk or global save or ignore.
+ */
+ if (keep < PNG_HANDLE_CHUNK_IF_SAFE)
+ {
+# ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+ if (png_ptr->unknown_default < PNG_HANDLE_CHUNK_IF_SAFE)
+ {
+ png_chunk_warning(png_ptr, "Saving unknown chunk:");
+ png_app_warning(png_ptr,
+ "forcing save of an unhandled chunk;"
+ " please call png_set_keep_unknown_chunks");
+ /* with keep = PNG_HANDLE_CHUNK_IF_SAFE */
+ }
+# endif
+ keep = PNG_HANDLE_CHUNK_IF_SAFE;
+ }
+ }
+
+ else /* chunk was handled */
+ {
+ handled = 1;
+ /* Critical chunks can be safely discarded at this point. */
+ keep = PNG_HANDLE_CHUNK_NEVER;
+ }
+ }
+
+ else
+ keep = PNG_HANDLE_CHUNK_NEVER; /* insufficient memory */
+ }
+
+ else
+ /* Use the SAVE_UNKNOWN_CHUNKS code or skip the chunk */
+# endif /* PNG_READ_USER_CHUNKS_SUPPORTED */
+
+# ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
+ {
+ /* keep is currently just the per-chunk setting, if there was no
+ * setting change it to the global default now (not that this may
+ * still be AS_DEFAULT) then obtain the cache of the chunk if required,
+ * if not simply skip the chunk.
+ */
+ if (keep == PNG_HANDLE_CHUNK_AS_DEFAULT)
+ keep = png_ptr->unknown_default;
+
+ if (keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (keep == PNG_HANDLE_CHUNK_IF_SAFE &&
+ PNG_CHUNK_ANCILLARY(png_ptr->chunk_name)))
+ {
+ if (!png_cache_unknown_chunk(png_ptr, length))
+ keep = PNG_HANDLE_CHUNK_NEVER;
+ }
+
+ else
+ png_crc_finish(png_ptr, length);
+ }
+# else
+# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
+# error no method to support READ_UNKNOWN_CHUNKS
+# endif
+
+ {
+ /* If here there is no read callback pointer set and no support is
+ * compiled in to just save the unknown chunks, so simply skip this
+ * chunk. If 'keep' is something other than AS_DEFAULT or NEVER then
+ * the app has erroneously asked for unknown chunk saving when there
+ * is no support.
+ */
+ if (keep > PNG_HANDLE_CHUNK_NEVER)
+ png_app_error(png_ptr, "no unknown chunk support available");
+
+ png_crc_finish(png_ptr, length);
+ }
+# endif
+
+# ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+ /* Now store the chunk in the chunk list if appropriate, and if the limits
+ * permit it.
+ */
+ if (keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (keep == PNG_HANDLE_CHUNK_IF_SAFE &&
+ PNG_CHUNK_ANCILLARY(png_ptr->chunk_name)))
+ {
+# ifdef PNG_USER_LIMITS_SUPPORTED
+ switch (png_ptr->user_chunk_cache_max)
+ {
+ case 2:
+ png_ptr->user_chunk_cache_max = 1;
+ png_chunk_benign_error(png_ptr, "no space in chunk cache");
+ /* FALL THROUGH */
+ case 1:
+ /* NOTE: prior to 1.6.0 this case resulted in an unknown critical
+ * chunk being skipped, now there will be a hard error below.
+ */
+ break;
+
+ default: /* not at limit */
+ --(png_ptr->user_chunk_cache_max);
+ /* FALL THROUGH */
+ case 0: /* no limit */
+# endif /* PNG_USER_LIMITS_SUPPORTED */
+ /* Here when the limit isn't reached or when limits are compiled
+ * out; store the chunk.
+ */
+ png_set_unknown_chunks(png_ptr, info_ptr,
+ &png_ptr->unknown_chunk, 1);
+ handled = 1;
+# ifdef PNG_USER_LIMITS_SUPPORTED
+ break;
+ }
+# endif
+ }
+# else /* no store support! */
+ PNG_UNUSED(info_ptr)
+# error untested code (reading unknown chunks with no store support)
+# endif
+
+ /* Regardless of the error handling below the cached data (if any) can be
+ * freed now. Notice that the data is not freed if there is a png_error, but
+ * it will be freed by destroy_read_struct.
+ */
+ if (png_ptr->unknown_chunk.data != NULL)
+ png_free(png_ptr, png_ptr->unknown_chunk.data);
+ png_ptr->unknown_chunk.data = NULL;
+
+#else /* !PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */
+ /* There is no support to read an unknown chunk, so just skip it. */
+ png_crc_finish(png_ptr, length);
+ PNG_UNUSED(info_ptr)
+ PNG_UNUSED(keep)
+#endif /* !PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */
+
+ /* Check for unhandled critical chunks */
+ if (!handled && PNG_CHUNK_CRITICAL(png_ptr->chunk_name))
+ png_chunk_error(png_ptr, "unhandled critical chunk");
+}
+
+/* This function is called to verify that a chunk name is valid.
+ * This function can't have the "critical chunk check" incorporated
+ * into it, since in the future we will need to be able to call user
+ * functions to handle unknown critical chunks after we check that
+ * the chunk name itself is valid.
+ */
+
+/* Bit hacking: the test for an invalid byte in the 4 byte chunk name is:
+ *
+ * ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
+ */
+
+void /* PRIVATE */
+png_check_chunk_name(png_structrp png_ptr, png_uint_32 chunk_name)
+{
+ int i;
+
+ png_debug(1, "in png_check_chunk_name");
+
+ for (i=1; i<=4; ++i)
+ {
+ int c = chunk_name & 0xff;
+
+ if (c < 65 || c > 122 || (c > 90 && c < 97))
+ png_chunk_error(png_ptr, "invalid chunk type");
+
+ chunk_name >>= 8;
+ }
+}
+
+/* Combines the row recently read in with the existing pixels in the row. This
+ * routine takes care of alpha and transparency if requested. This routine also
+ * handles the two methods of progressive display of interlaced images,
+ * depending on the 'display' value; if 'display' is true then the whole row
+ * (dp) is filled from the start by replicating the available pixels. If
+ * 'display' is false only those pixels present in the pass are filled in.
+ */
+void /* PRIVATE */
+png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
+{
+ unsigned int pixel_depth = png_ptr->transformed_pixel_depth;
+ png_const_bytep sp = png_ptr->row_buf + 1;
+ png_uint_32 row_width = png_ptr->width;
+ unsigned int pass = png_ptr->pass;
+ png_bytep end_ptr = 0;
+ png_byte end_byte = 0;
+ unsigned int end_mask;
+
+ png_debug(1, "in png_combine_row");
+
+ /* Added in 1.5.6: it should not be possible to enter this routine until at
+ * least one row has been read from the PNG data and transformed.
+ */
+ if (pixel_depth == 0)
+ png_error(png_ptr, "internal row logic error");
+
+ /* Added in 1.5.4: the pixel depth should match the information returned by
+ * any call to png_read_update_info at this point. Do not continue if we got
+ * this wrong.
+ */
+ if (png_ptr->info_rowbytes != 0 && png_ptr->info_rowbytes !=
+ PNG_ROWBYTES(pixel_depth, row_width))
+ png_error(png_ptr, "internal row size calculation error");
+
+ /* Don't expect this to ever happen: */
+ if (row_width == 0)
+ png_error(png_ptr, "internal row width error");
+
+ /* Preserve the last byte in cases where only part of it will be overwritten,
+ * the multiply below may overflow, we don't care because ANSI-C guarantees
+ * we get the low bits.
+ */
+ end_mask = (pixel_depth * row_width) & 7;
+ if (end_mask != 0)
+ {
+ /* end_ptr == NULL is a flag to say do nothing */
+ end_ptr = dp + PNG_ROWBYTES(pixel_depth, row_width) - 1;
+ end_byte = *end_ptr;
+# ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP) /* little-endian byte */
+ end_mask = 0xff << end_mask;
+
+ else /* big-endian byte */
+# endif
+ end_mask = 0xff >> end_mask;
+ /* end_mask is now the bits to *keep* from the destination row */
+ }
+
+ /* For non-interlaced images this reduces to a memcpy(). A memcpy()
+ * will also happen if interlacing isn't supported or if the application
+ * does not call png_set_interlace_handling(). In the latter cases the
+ * caller just gets a sequence of the unexpanded rows from each interlace
+ * pass.
+ */
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE) &&
+ pass < 6 && (display == 0 ||
+ /* The following copies everything for 'display' on passes 0, 2 and 4. */
+ (display == 1 && (pass & 1) != 0)))
+ {
+ /* Narrow images may have no bits in a pass; the caller should handle
+ * this, but this test is cheap:
+ */
+ if (row_width <= PNG_PASS_START_COL(pass))
+ return;
+
+ if (pixel_depth < 8)
+ {
+ /* For pixel depths up to 4 bpp the 8-pixel mask can be expanded to fit
+ * into 32 bits, then a single loop over the bytes using the four byte
+ * values in the 32-bit mask can be used. For the 'display' option the
+ * expanded mask may also not require any masking within a byte. To
+ * make this work the PACKSWAP option must be taken into account - it
+ * simply requires the pixels to be reversed in each byte.
+ *
+ * The 'regular' case requires a mask for each of the first 6 passes,
+ * the 'display' case does a copy for the even passes in the range
+ * 0..6. This has already been handled in the test above.
+ *
+ * The masks are arranged as four bytes with the first byte to use in
+ * the lowest bits (little-endian) regardless of the order (PACKSWAP or
+ * not) of the pixels in each byte.
+ *
+ * NOTE: the whole of this logic depends on the caller of this function
+ * only calling it on rows appropriate to the pass. This function only
+ * understands the 'x' logic; the 'y' logic is handled by the caller.
+ *
+ * The following defines allow generation of compile time constant bit
+ * masks for each pixel depth and each possibility of swapped or not
+ * swapped bytes. Pass 'p' is in the range 0..6; 'x', a pixel index,
+ * is in the range 0..7; and the result is 1 if the pixel is to be
+ * copied in the pass, 0 if not. 'S' is for the sparkle method, 'B'
+ * for the block method.
+ *
+ * With some compilers a compile time expression of the general form:
+ *
+ * (shift >= 32) ? (a >> (shift-32)) : (b >> shift)
+ *
+ * Produces warnings with values of 'shift' in the range 33 to 63
+ * because the right hand side of the ?: expression is evaluated by
+ * the compiler even though it isn't used. Microsoft Visual C (various
+ * versions) and the Intel C compiler are known to do this. To avoid
+ * this the following macros are used in 1.5.6. This is a temporary
+ * solution to avoid destabilizing the code during the release process.
+ */
+# if PNG_USE_COMPILE_TIME_MASKS
+# define PNG_LSR(x,s) ((x)>>((s) & 0x1f))
+# define PNG_LSL(x,s) ((x)<<((s) & 0x1f))
+# else
+# define PNG_LSR(x,s) ((x)>>(s))
+# define PNG_LSL(x,s) ((x)<<(s))
+# endif
+# define S_COPY(p,x) (((p)<4 ? PNG_LSR(0x80088822,(3-(p))*8+(7-(x))) :\
+ PNG_LSR(0xaa55ff00,(7-(p))*8+(7-(x)))) & 1)
+# define B_COPY(p,x) (((p)<4 ? PNG_LSR(0xff0fff33,(3-(p))*8+(7-(x))) :\
+ PNG_LSR(0xff55ff00,(7-(p))*8+(7-(x)))) & 1)
+
+ /* Return a mask for pass 'p' pixel 'x' at depth 'd'. The mask is
+ * little endian - the first pixel is at bit 0 - however the extra
+ * parameter 's' can be set to cause the mask position to be swapped
+ * within each byte, to match the PNG format. This is done by XOR of
+ * the shift with 7, 6 or 4 for bit depths 1, 2 and 4.
+ */
+# define PIXEL_MASK(p,x,d,s) \
+ (PNG_LSL(((PNG_LSL(1U,(d)))-1),(((x)*(d))^((s)?8-(d):0))))
+
+ /* Hence generate the appropriate 'block' or 'sparkle' pixel copy mask.
+ */
+# define S_MASKx(p,x,d,s) (S_COPY(p,x)?PIXEL_MASK(p,x,d,s):0)
+# define B_MASKx(p,x,d,s) (B_COPY(p,x)?PIXEL_MASK(p,x,d,s):0)
+
+ /* Combine 8 of these to get the full mask. For the 1-bpp and 2-bpp
+ * cases the result needs replicating, for the 4-bpp case the above
+ * generates a full 32 bits.
+ */
+# define MASK_EXPAND(m,d) ((m)*((d)==1?0x01010101:((d)==2?0x00010001:1)))
+
+# define S_MASK(p,d,s) MASK_EXPAND(S_MASKx(p,0,d,s) + S_MASKx(p,1,d,s) +\
+ S_MASKx(p,2,d,s) + S_MASKx(p,3,d,s) + S_MASKx(p,4,d,s) +\
+ S_MASKx(p,5,d,s) + S_MASKx(p,6,d,s) + S_MASKx(p,7,d,s), d)
+
+# define B_MASK(p,d,s) MASK_EXPAND(B_MASKx(p,0,d,s) + B_MASKx(p,1,d,s) +\
+ B_MASKx(p,2,d,s) + B_MASKx(p,3,d,s) + B_MASKx(p,4,d,s) +\
+ B_MASKx(p,5,d,s) + B_MASKx(p,6,d,s) + B_MASKx(p,7,d,s), d)
+
+#if PNG_USE_COMPILE_TIME_MASKS
+ /* Utility macros to construct all the masks for a depth/swap
+ * combination. The 's' parameter says whether the format is PNG
+ * (big endian bytes) or not. Only the three odd-numbered passes are
+ * required for the display/block algorithm.
+ */
+# define S_MASKS(d,s) { S_MASK(0,d,s), S_MASK(1,d,s), S_MASK(2,d,s),\
+ S_MASK(3,d,s), S_MASK(4,d,s), S_MASK(5,d,s) }
+
+# define B_MASKS(d,s) { B_MASK(1,d,s), S_MASK(3,d,s), S_MASK(5,d,s) }
+
+# define DEPTH_INDEX(d) ((d)==1?0:((d)==2?1:2))
+
+ /* Hence the pre-compiled masks indexed by PACKSWAP (or not), depth and
+ * then pass:
+ */
+ static PNG_CONST png_uint_32 row_mask[2/*PACKSWAP*/][3/*depth*/][6] =
+ {
+ /* Little-endian byte masks for PACKSWAP */
+ { S_MASKS(1,0), S_MASKS(2,0), S_MASKS(4,0) },
+ /* Normal (big-endian byte) masks - PNG format */
+ { S_MASKS(1,1), S_MASKS(2,1), S_MASKS(4,1) }
+ };
+
+ /* display_mask has only three entries for the odd passes, so index by
+ * pass>>1.
+ */
+ static PNG_CONST png_uint_32 display_mask[2][3][3] =
+ {
+ /* Little-endian byte masks for PACKSWAP */
+ { B_MASKS(1,0), B_MASKS(2,0), B_MASKS(4,0) },
+ /* Normal (big-endian byte) masks - PNG format */
+ { B_MASKS(1,1), B_MASKS(2,1), B_MASKS(4,1) }
+ };
+
+# define MASK(pass,depth,display,png)\
+ ((display)?display_mask[png][DEPTH_INDEX(depth)][pass>>1]:\
+ row_mask[png][DEPTH_INDEX(depth)][pass])
+
+#else /* !PNG_USE_COMPILE_TIME_MASKS */
+ /* This is the runtime alternative: it seems unlikely that this will
+ * ever be either smaller or faster than the compile time approach.
+ */
+# define MASK(pass,depth,display,png)\
+ ((display)?B_MASK(pass,depth,png):S_MASK(pass,depth,png))
+#endif /* !PNG_USE_COMPILE_TIME_MASKS */
+
+ /* Use the appropriate mask to copy the required bits. In some cases
+ * the byte mask will be 0 or 0xff, optimize these cases. row_width is
+ * the number of pixels, but the code copies bytes, so it is necessary
+ * to special case the end.
+ */
+ png_uint_32 pixels_per_byte = 8 / pixel_depth;
+ png_uint_32 mask;
+
+# ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ mask = MASK(pass, pixel_depth, display, 0);
+
+ else
+# endif
+ mask = MASK(pass, pixel_depth, display, 1);
+
+ for (;;)
+ {
+ png_uint_32 m;
+
+ /* It doesn't matter in the following if png_uint_32 has more than
+ * 32 bits because the high bits always match those in m<<24; it is,
+ * however, essential to use OR here, not +, because of this.
+ */
+ m = mask;
+ mask = (m >> 8) | (m << 24); /* rotate right to good compilers */
+ m &= 0xff;
+
+ if (m != 0) /* something to copy */
+ {
+ if (m != 0xff)
+ *dp = (png_byte)((*dp & ~m) | (*sp & m));
+ else
+ *dp = *sp;
+ }
+
+ /* NOTE: this may overwrite the last byte with garbage if the image
+ * is not an exact number of bytes wide; libpng has always done
+ * this.
+ */
+ if (row_width <= pixels_per_byte)
+ break; /* May need to restore part of the last byte */
+
+ row_width -= pixels_per_byte;
+ ++dp;
+ ++sp;
+ }
+ }
+
+ else /* pixel_depth >= 8 */
+ {
+ unsigned int bytes_to_copy, bytes_to_jump;
+
+ /* Validate the depth - it must be a multiple of 8 */
+ if (pixel_depth & 7)
+ png_error(png_ptr, "invalid user transform pixel depth");
+
+ pixel_depth >>= 3; /* now in bytes */
+ row_width *= pixel_depth;
+
+ /* Regardless of pass number the Adam 7 interlace always results in a
+ * fixed number of pixels to copy then to skip. There may be a
+ * different number of pixels to skip at the start though.
+ */
+ {
+ unsigned int offset = PNG_PASS_START_COL(pass) * pixel_depth;
+
+ row_width -= offset;
+ dp += offset;
+ sp += offset;
+ }
+
+ /* Work out the bytes to copy. */
+ if (display)
+ {
+ /* When doing the 'block' algorithm the pixel in the pass gets
+ * replicated to adjacent pixels. This is why the even (0,2,4,6)
+ * passes are skipped above - the entire expanded row is copied.
+ */
+ bytes_to_copy = (1<<((6-pass)>>1)) * pixel_depth;
+
+ /* But don't allow this number to exceed the actual row width. */
+ if (bytes_to_copy > row_width)
+ bytes_to_copy = row_width;
+ }
+
+ else /* normal row; Adam7 only ever gives us one pixel to copy. */
+ bytes_to_copy = pixel_depth;
+
+ /* In Adam7 there is a constant offset between where the pixels go. */
+ bytes_to_jump = PNG_PASS_COL_OFFSET(pass) * pixel_depth;
+
+ /* And simply copy these bytes. Some optimization is possible here,
+ * depending on the value of 'bytes_to_copy'. Special case the low
+ * byte counts, which we know to be frequent.
+ *
+ * Notice that these cases all 'return' rather than 'break' - this
+ * avoids an unnecessary test on whether to restore the last byte
+ * below.
+ */
+ switch (bytes_to_copy)
+ {
+ case 1:
+ for (;;)
+ {
+ *dp = *sp;
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ dp += bytes_to_jump;
+ sp += bytes_to_jump;
+ row_width -= bytes_to_jump;
+ }
+
+ case 2:
+ /* There is a possibility of a partial copy at the end here; this
+ * slows the code down somewhat.
+ */
+ do
+ {
+ dp[0] = sp[0], dp[1] = sp[1];
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ sp += bytes_to_jump;
+ dp += bytes_to_jump;
+ row_width -= bytes_to_jump;
+ }
+ while (row_width > 1);
+
+ /* And there can only be one byte left at this point: */
+ *dp = *sp;
+ return;
+
+ case 3:
+ /* This can only be the RGB case, so each copy is exactly one
+ * pixel and it is not necessary to check for a partial copy.
+ */
+ for(;;)
+ {
+ dp[0] = sp[0], dp[1] = sp[1], dp[2] = sp[2];
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ sp += bytes_to_jump;
+ dp += bytes_to_jump;
+ row_width -= bytes_to_jump;
+ }
+
+ default:
+#if PNG_ALIGN_TYPE != PNG_ALIGN_NONE
+ /* Check for double byte alignment and, if possible, use a
+ * 16-bit copy. Don't attempt this for narrow images - ones that
+ * are less than an interlace panel wide. Don't attempt it for
+ * wide bytes_to_copy either - use the memcpy there.
+ */
+ if (bytes_to_copy < 16 /*else use memcpy*/ &&
+ png_isaligned(dp, png_uint_16) &&
+ png_isaligned(sp, png_uint_16) &&
+ bytes_to_copy % (sizeof (png_uint_16)) == 0 &&
+ bytes_to_jump % (sizeof (png_uint_16)) == 0)
+ {
+ /* Everything is aligned for png_uint_16 copies, but try for
+ * png_uint_32 first.
+ */
+ if (png_isaligned(dp, png_uint_32) &&
+ png_isaligned(sp, png_uint_32) &&
+ bytes_to_copy % (sizeof (png_uint_32)) == 0 &&
+ bytes_to_jump % (sizeof (png_uint_32)) == 0)
+ {
+ png_uint_32p dp32 = png_aligncast(png_uint_32p,dp);
+ png_const_uint_32p sp32 = png_aligncastconst(
+ png_const_uint_32p, sp);
+ size_t skip = (bytes_to_jump-bytes_to_copy) /
+ (sizeof (png_uint_32));
+
+ do
+ {
+ size_t c = bytes_to_copy;
+ do
+ {
+ *dp32++ = *sp32++;
+ c -= (sizeof (png_uint_32));
+ }
+ while (c > 0);
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ dp32 += skip;
+ sp32 += skip;
+ row_width -= bytes_to_jump;
+ }
+ while (bytes_to_copy <= row_width);
+
+ /* Get to here when the row_width truncates the final copy.
+ * There will be 1-3 bytes left to copy, so don't try the
+ * 16-bit loop below.
+ */
+ dp = (png_bytep)dp32;
+ sp = (png_const_bytep)sp32;
+ do
+ *dp++ = *sp++;
+ while (--row_width > 0);
+ return;
+ }
+
+ /* Else do it in 16-bit quantities, but only if the size is
+ * not too large.
+ */
+ else
+ {
+ png_uint_16p dp16 = png_aligncast(png_uint_16p, dp);
+ png_const_uint_16p sp16 = png_aligncastconst(
+ png_const_uint_16p, sp);
+ size_t skip = (bytes_to_jump-bytes_to_copy) /
+ (sizeof (png_uint_16));
+
+ do
+ {
+ size_t c = bytes_to_copy;
+ do
+ {
+ *dp16++ = *sp16++;
+ c -= (sizeof (png_uint_16));
+ }
+ while (c > 0);
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ dp16 += skip;
+ sp16 += skip;
+ row_width -= bytes_to_jump;
+ }
+ while (bytes_to_copy <= row_width);
+
+ /* End of row - 1 byte left, bytes_to_copy > row_width: */
+ dp = (png_bytep)dp16;
+ sp = (png_const_bytep)sp16;
+ do
+ *dp++ = *sp++;
+ while (--row_width > 0);
+ return;
+ }
+ }
+#endif /* PNG_ALIGN_ code */
+
+ /* The true default - use a memcpy: */
+ for (;;)
+ {
+ memcpy(dp, sp, bytes_to_copy);
+
+ if (row_width <= bytes_to_jump)
+ return;
+
+ sp += bytes_to_jump;
+ dp += bytes_to_jump;
+ row_width -= bytes_to_jump;
+ if (bytes_to_copy > row_width)
+ bytes_to_copy = row_width;
+ }
+ }
+
+ /* NOT REACHED*/
+ } /* pixel_depth >= 8 */
+
+ /* Here if pixel_depth < 8 to check 'end_ptr' below. */
+ }
+ else
+#endif
+
+ /* If here then the switch above wasn't used so just memcpy the whole row
+ * from the temporary row buffer (notice that this overwrites the end of the
+ * destination row if it is a partial byte.)
+ */
+ memcpy(dp, sp, PNG_ROWBYTES(pixel_depth, row_width));
+
+ /* Restore the overwritten bits from the last byte if necessary. */
+ if (end_ptr != NULL)
+ *end_ptr = (png_byte)((end_byte & end_mask) | (*end_ptr & ~end_mask));
+}
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+void /* PRIVATE */
+png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
+ png_uint_32 transformations /* Because these may affect the byte layout */)
+{
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+ /* Offset to next interlace block */
+ static PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ png_debug(1, "in png_do_read_interlace");
+ if (row != NULL && row_info != NULL)
+ {
+ png_uint_32 final_width;
+
+ final_width = row_info->width * png_pass_inc[pass];
+
+ switch (row_info->pixel_depth)
+ {
+ case 1:
+ {
+ png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 3);
+ png_bytep dp = row + (png_size_t)((final_width - 1) >> 3);
+ int sshift, dshift;
+ int s_start, s_end, s_inc;
+ int jstop = png_pass_inc[pass];
+ png_byte v;
+ png_uint_32 i;
+ int j;
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (transformations & PNG_PACKSWAP)
+ {
+ sshift = (int)((row_info->width + 7) & 0x07);
+ dshift = (int)((final_width + 7) & 0x07);
+ s_start = 7;
+ s_end = 0;
+ s_inc = -1;
+ }
+
+ else
+#endif
+ {
+ sshift = 7 - (int)((row_info->width + 7) & 0x07);
+ dshift = 7 - (int)((final_width + 7) & 0x07);
+ s_start = 0;
+ s_end = 7;
+ s_inc = 1;
+ }
+
+ for (i = 0; i < row_info->width; i++)
+ {
+ v = (png_byte)((*sp >> sshift) & 0x01);
+ for (j = 0; j < jstop; j++)
+ {
+ unsigned int tmp = *dp & (0x7f7f >> (7 - dshift));
+ tmp |= v << dshift;
+ *dp = (png_byte)(tmp & 0xff);
+
+ if (dshift == s_end)
+ {
+ dshift = s_start;
+ dp--;
+ }
+
+ else
+ dshift += s_inc;
+ }
+
+ if (sshift == s_end)
+ {
+ sshift = s_start;
+ sp--;
+ }
+
+ else
+ sshift += s_inc;
+ }
+ break;
+ }
+
+ case 2:
+ {
+ png_bytep sp = row + (png_uint_32)((row_info->width - 1) >> 2);
+ png_bytep dp = row + (png_uint_32)((final_width - 1) >> 2);
+ int sshift, dshift;
+ int s_start, s_end, s_inc;
+ int jstop = png_pass_inc[pass];
+ png_uint_32 i;
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (transformations & PNG_PACKSWAP)
+ {
+ sshift = (int)(((row_info->width + 3) & 0x03) << 1);
+ dshift = (int)(((final_width + 3) & 0x03) << 1);
+ s_start = 6;
+ s_end = 0;
+ s_inc = -2;
+ }
+
+ else
+#endif
+ {
+ sshift = (int)((3 - ((row_info->width + 3) & 0x03)) << 1);
+ dshift = (int)((3 - ((final_width + 3) & 0x03)) << 1);
+ s_start = 0;
+ s_end = 6;
+ s_inc = 2;
+ }
+
+ for (i = 0; i < row_info->width; i++)
+ {
+ png_byte v;
+ int j;
+
+ v = (png_byte)((*sp >> sshift) & 0x03);
+ for (j = 0; j < jstop; j++)
+ {
+ unsigned int tmp = *dp & (0x3f3f >> (6 - dshift));
+ tmp |= v << dshift;
+ *dp = (png_byte)(tmp & 0xff);
+
+ if (dshift == s_end)
+ {
+ dshift = s_start;
+ dp--;
+ }
+
+ else
+ dshift += s_inc;
+ }
+
+ if (sshift == s_end)
+ {
+ sshift = s_start;
+ sp--;
+ }
+
+ else
+ sshift += s_inc;
+ }
+ break;
+ }
+
+ case 4:
+ {
+ png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 1);
+ png_bytep dp = row + (png_size_t)((final_width - 1) >> 1);
+ int sshift, dshift;
+ int s_start, s_end, s_inc;
+ png_uint_32 i;
+ int jstop = png_pass_inc[pass];
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (transformations & PNG_PACKSWAP)
+ {
+ sshift = (int)(((row_info->width + 1) & 0x01) << 2);
+ dshift = (int)(((final_width + 1) & 0x01) << 2);
+ s_start = 4;
+ s_end = 0;
+ s_inc = -4;
+ }
+
+ else
+#endif
+ {
+ sshift = (int)((1 - ((row_info->width + 1) & 0x01)) << 2);
+ dshift = (int)((1 - ((final_width + 1) & 0x01)) << 2);
+ s_start = 0;
+ s_end = 4;
+ s_inc = 4;
+ }
+
+ for (i = 0; i < row_info->width; i++)
+ {
+ png_byte v = (png_byte)((*sp >> sshift) & 0x0f);
+ int j;
+
+ for (j = 0; j < jstop; j++)
+ {
+ unsigned int tmp = *dp & (0xf0f >> (4 - dshift));
+ tmp |= v << dshift;
+ *dp = (png_byte)(tmp & 0xff);
+
+ if (dshift == s_end)
+ {
+ dshift = s_start;
+ dp--;
+ }
+
+ else
+ dshift += s_inc;
+ }
+
+ if (sshift == s_end)
+ {
+ sshift = s_start;
+ sp--;
+ }
+
+ else
+ sshift += s_inc;
+ }
+ break;
+ }
+
+ default:
+ {
+ png_size_t pixel_bytes = (row_info->pixel_depth >> 3);
+
+ png_bytep sp = row + (png_size_t)(row_info->width - 1)
+ * pixel_bytes;
+
+ png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes;
+
+ int jstop = png_pass_inc[pass];
+ png_uint_32 i;
+
+ for (i = 0; i < row_info->width; i++)
+ {
+ png_byte v[8]; /* SAFE; pixel_depth does not exceed 64 */
+ int j;
+
+ memcpy(v, sp, pixel_bytes);
+
+ for (j = 0; j < jstop; j++)
+ {
+ memcpy(dp, v, pixel_bytes);
+ dp -= pixel_bytes;
+ }
+
+ sp -= pixel_bytes;
+ }
+ break;
+ }
+ }
+
+ row_info->width = final_width;
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
+ }
+#ifndef PNG_READ_PACKSWAP_SUPPORTED
+ PNG_UNUSED(transformations) /* Silence compiler warning */
+#endif
+}
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
+static void
+png_read_filter_row_sub(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
+ unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
+ png_bytep rp = row + bpp;
+
+ PNG_UNUSED(prev_row)
+
+ for (i = bpp; i < istop; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) + (int)(*(rp-bpp))) & 0xff);
+ rp++;
+ }
+}
+
+static void
+png_read_filter_row_up(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
+ png_bytep rp = row;
+ png_const_bytep pp = prev_row;
+
+ for (i = 0; i < istop; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
+ rp++;
+ }
+}
+
+static void
+png_read_filter_row_avg(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ png_size_t i;
+ png_bytep rp = row;
+ png_const_bytep pp = prev_row;
+ unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
+ png_size_t istop = row_info->rowbytes - bpp;
+
+ for (i = 0; i < bpp; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) +
+ ((int)(*pp++) / 2 )) & 0xff);
+
+ rp++;
+ }
+
+ for (i = 0; i < istop; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) +
+ (int)(*pp++ + *(rp-bpp)) / 2 ) & 0xff);
+
+ rp++;
+ }
+}
+
+static void
+png_read_filter_row_paeth_1byte_pixel(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ png_bytep rp_end = row + row_info->rowbytes;
+ int a, c;
+
+ /* First pixel/byte */
+ c = *prev_row++;
+ a = *row + c;
+ *row++ = (png_byte)a;
+
+ /* Remainder */
+ while (row < rp_end)
+ {
+ int b, pa, pb, pc, p;
+
+ a &= 0xff; /* From previous iteration or start */
+ b = *prev_row++;
+
+ p = b - c;
+ pc = a - c;
+
+# ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+# else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+# endif
+
+ /* Find the best predictor, the least of pa, pb, pc favoring the earlier
+ * ones in the case of a tie.
+ */
+ if (pb < pa) pa = pb, a = b;
+ if (pc < pa) a = c;
+
+ /* Calculate the current pixel in a, and move the previous row pixel to c
+ * for the next time round the loop
+ */
+ c = b;
+ a += *row;
+ *row++ = (png_byte)a;
+ }
+}
+
+static void
+png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row)
+{
+ int bpp = (row_info->pixel_depth + 7) >> 3;
+ png_bytep rp_end = row + bpp;
+
+ /* Process the first pixel in the row completely (this is the same as 'up'
+ * because there is only one candidate predictor for the first row).
+ */
+ while (row < rp_end)
+ {
+ int a = *row + *prev_row++;
+ *row++ = (png_byte)a;
+ }
+
+ /* Remainder */
+ rp_end += row_info->rowbytes - bpp;
+
+ while (row < rp_end)
+ {
+ int a, b, c, pa, pb, pc, p;
+
+ c = *(prev_row - bpp);
+ a = *(row - bpp);
+ b = *prev_row++;
+
+ p = b - c;
+ pc = a - c;
+
+# ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+# else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+# endif
+
+ if (pb < pa) pa = pb, a = b;
+ if (pc < pa) a = c;
+
+ c = b;
+ a += *row;
+ *row++ = (png_byte)a;
+ }
+}
+
+static void
+png_init_filter_functions(png_structrp pp)
+ /* This function is called once for every PNG image to set the
+ * implementations required to reverse the filtering of PNG rows. Reversing
+ * the filter is the first transformation performed on the row data. It is
+ * performed in place, therefore an implementation can be selected based on
+ * the image pixel format. If the implementation depends on image width then
+ * take care to ensure that it works correctly if the image is interlaced -
+ * interlacing causes the actual row width to vary.
+ */
+{
+ unsigned int bpp = (pp->pixel_depth + 7) >> 3;
+
+ pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub;
+ pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up;
+ pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg;
+ if (bpp == 1)
+ pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+ png_read_filter_row_paeth_1byte_pixel;
+ else
+ pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+ png_read_filter_row_paeth_multibyte_pixel;
+
+#ifdef PNG_FILTER_OPTIMIZATIONS
+ /* To use this define PNG_FILTER_OPTIMIZATIONS as the name of a function to
+ * call to install hardware optimizations for the above functions; simply
+ * replace whatever elements of the pp->read_filter[] array with a hardware
+ * specific (or, for that matter, generic) optimization.
+ *
+ * To see an example of this examine what configure.ac does when
+ * --enable-arm-neon is specified on the command line.
+ */
+ PNG_FILTER_OPTIMIZATIONS(pp, bpp);
+#endif
+}
+
+void /* PRIVATE */
+png_read_filter_row(png_structrp pp, png_row_infop row_info, png_bytep row,
+ png_const_bytep prev_row, int filter)
+{
+ /* OPTIMIZATION: DO NOT MODIFY THIS FUNCTION, instead #define
+ * PNG_FILTER_OPTIMIZATIONS to a function that overrides the generic
+ * implementations. See png_init_filter_functions above.
+ */
+ if (pp->read_filter[0] == NULL)
+ png_init_filter_functions(pp);
+ if (filter > PNG_FILTER_VALUE_NONE && filter < PNG_FILTER_VALUE_LAST)
+ pp->read_filter[filter-1](row_info, row, prev_row);
+}
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+void /* PRIVATE */
+png_read_IDAT_data(png_structrp png_ptr, png_bytep output,
+ png_alloc_size_t avail_out)
+{
+ /* Loop reading IDATs and decompressing the result into output[avail_out] */
+ png_ptr->zstream.next_out = output;
+ png_ptr->zstream.avail_out = 0; /* safety: set below */
+
+ if (output == NULL)
+ avail_out = 0;
+
+ do
+ {
+ int ret;
+ png_byte tmpbuf[PNG_INFLATE_BUF_SIZE];
+
+ if (png_ptr->zstream.avail_in == 0)
+ {
+ uInt avail_in;
+ png_bytep buffer;
+
+ while (png_ptr->idat_size == 0)
+ {
+ png_crc_finish(png_ptr, 0);
+
+ png_ptr->idat_size = png_read_chunk_header(png_ptr);
+ /* This is an error even in the 'check' case because the code just
+ * consumed a non-IDAT header.
+ */
+ if (png_ptr->chunk_name != png_IDAT)
+ png_error(png_ptr, "Not enough image data");
+ }
+
+ avail_in = png_ptr->IDAT_read_size;
+
+ if (avail_in > png_ptr->idat_size)
+ avail_in = (uInt)png_ptr->idat_size;
+
+ /* A PNG with a gradually increasing IDAT size will defeat this attempt
+ * to minimize memory usage by causing lots of re-allocs, but
+ * realistically doing IDAT_read_size re-allocs is not likely to be a
+ * big problem.
+ */
+ buffer = png_read_buffer(png_ptr, avail_in, 0/*error*/);
+
+ png_crc_read(png_ptr, buffer, avail_in);
+ png_ptr->idat_size -= avail_in;
+
+ png_ptr->zstream.next_in = buffer;
+ png_ptr->zstream.avail_in = avail_in;
+ }
+
+ /* And set up the output side. */
+ if (output != NULL) /* standard read */
+ {
+ uInt out = ZLIB_IO_MAX;
+
+ if (out > avail_out)
+ out = (uInt)avail_out;
+
+ avail_out -= out;
+ png_ptr->zstream.avail_out = out;
+ }
+
+ else /* after last row, checking for end */
+ {
+ png_ptr->zstream.next_out = tmpbuf;
+ png_ptr->zstream.avail_out = (sizeof tmpbuf);
+ }
+
+ /* Use NO_FLUSH; this gives zlib the maximum opportunity to optimize the
+ * process. If the LZ stream is truncated the sequential reader will
+ * terminally damage the stream, above, by reading the chunk header of the
+ * following chunk (it then exits with png_error).
+ *
+ * TODO: deal more elegantly with truncated IDAT lists.
+ */
+ ret = inflate(&png_ptr->zstream, Z_NO_FLUSH);
+
+ /* Take the unconsumed output back. */
+ if (output != NULL)
+ avail_out += png_ptr->zstream.avail_out;
+
+ else /* avail_out counts the extra bytes */
+ avail_out += (sizeof tmpbuf) - png_ptr->zstream.avail_out;
+
+ png_ptr->zstream.avail_out = 0;
+
+ if (ret == Z_STREAM_END)
+ {
+ /* Do this for safety; we won't read any more into this row. */
+ png_ptr->zstream.next_out = NULL;
+
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
+
+ if (png_ptr->zstream.avail_in > 0 || png_ptr->idat_size > 0)
+ png_chunk_benign_error(png_ptr, "Extra compressed data");
+ break;
+ }
+
+ if (ret != Z_OK)
+ {
+ png_zstream_error(png_ptr, ret);
+
+ if (output != NULL)
+ png_chunk_error(png_ptr, png_ptr->zstream.msg);
+
+ else /* checking */
+ {
+ png_chunk_benign_error(png_ptr, png_ptr->zstream.msg);
+ return;
+ }
+ }
+ } while (avail_out > 0);
+
+ if (avail_out > 0)
+ {
+ /* The stream ended before the image; this is the same as too few IDATs so
+ * should be handled the same way.
+ */
+ if (output != NULL)
+ png_error(png_ptr, "Not enough image data");
+
+ else /* the deflate stream contained extra data */
+ png_chunk_benign_error(png_ptr, "Too much image data");
+ }
+}
+
+void /* PRIVATE */
+png_read_finish_IDAT(png_structrp png_ptr)
+{
+ /* We don't need any more data and the stream should have ended, however the
+ * LZ end code may actually not have been processed. In this case we must
+ * read it otherwise stray unread IDAT data or, more likely, an IDAT chunk
+ * may still remain to be consumed.
+ */
+ if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
+ {
+ /* The NULL causes png_read_IDAT_data to swallow any remaining bytes in
+ * the compressed stream, but the stream may be damaged too, so even after
+ * this call we may need to terminate the zstream ownership.
+ */
+ png_read_IDAT_data(png_ptr, NULL, 0);
+ png_ptr->zstream.next_out = NULL; /* safety */
+
+ /* Now clear everything out for safety; the following may not have been
+ * done.
+ */
+ if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
+ {
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
+ }
+ }
+
+ /* If the zstream has not been released do it now *and* terminate the reading
+ * of the final IDAT chunk.
+ */
+ if (png_ptr->zowner == png_IDAT)
+ {
+ /* Always do this; the pointers otherwise point into the read buffer. */
+ png_ptr->zstream.next_in = NULL;
+ png_ptr->zstream.avail_in = 0;
+
+ /* Now we no longer own the zstream. */
+ png_ptr->zowner = 0;
+
+ /* The slightly weird semantics of the sequential IDAT reading is that we
+ * are always in or at the end of an IDAT chunk, so we always need to do a
+ * crc_finish here. If idat_size is non-zero we also need to read the
+ * spurious bytes at the end of the chunk now.
+ */
+ (void)png_crc_finish(png_ptr, png_ptr->idat_size);
+ }
+}
+
+void /* PRIVATE */
+png_read_finish_row(png_structrp png_ptr)
+{
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
+ png_debug(1, "in png_read_finish_row");
+ png_ptr->row_number++;
+ if (png_ptr->row_number < png_ptr->num_rows)
+ return;
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (png_ptr->interlaced)
+ {
+ png_ptr->row_number = 0;
+
+ /* TO DO: don't do this if prev_row isn't needed (requires
+ * read-ahead of the next row's filter byte.
+ */
+ memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+
+ do
+ {
+ png_ptr->pass++;
+
+ if (png_ptr->pass >= 7)
+ break;
+
+ png_ptr->iwidth = (png_ptr->width +
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+
+ if (!(png_ptr->transformations & PNG_INTERLACE))
+ {
+ png_ptr->num_rows = (png_ptr->height +
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
+ }
+
+ else /* if (png_ptr->transformations & PNG_INTERLACE) */
+ break; /* libpng deinterlacing sees every row */
+
+ } while (png_ptr->num_rows == 0 || png_ptr->iwidth == 0);
+
+ if (png_ptr->pass < 7)
+ return;
+ }
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
+ /* Here after at the end of the last row of the last pass. */
+ png_read_finish_IDAT(png_ptr);
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+void /* PRIVATE */
+png_read_start_row(png_structrp png_ptr)
+{
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif
+
+ int max_pixel_depth;
+ png_size_t row_bytes;
+
+ png_debug(1, "in png_read_start_row");
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+ png_init_read_transformations(png_ptr);
+#endif
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (png_ptr->interlaced)
+ {
+ if (!(png_ptr->transformations & PNG_INTERLACE))
+ png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
+ png_pass_ystart[0]) / png_pass_yinc[0];
+
+ else
+ png_ptr->num_rows = png_ptr->height;
+
+ png_ptr->iwidth = (png_ptr->width +
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+ }
+
+ else
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+ {
+ png_ptr->num_rows = png_ptr->height;
+ png_ptr->iwidth = png_ptr->width;
+ }
+
+ max_pixel_depth = png_ptr->pixel_depth;
+
+ /* WARNING: * png_read_transform_info (pngrtran.c) performs a simpliar set of
+ * calculations to calculate the final pixel depth, then
+ * png_do_read_transforms actually does the transforms. This means that the
+ * code which effectively calculates this value is actually repeated in three
+ * separate places. They must all match. Innocent changes to the order of
+ * transformations can and will break libpng in a way that causes memory
+ * overwrites.
+ *
+ * TODO: fix this.
+ */
+#ifdef PNG_READ_PACK_SUPPORTED
+ if ((png_ptr->transformations & PNG_PACK) && png_ptr->bit_depth < 8)
+ max_pixel_depth = 8;
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND)
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (png_ptr->num_trans)
+ max_pixel_depth = 32;
+
+ else
+ max_pixel_depth = 24;
+ }
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (max_pixel_depth < 8)
+ max_pixel_depth = 8;
+
+ if (png_ptr->num_trans)
+ max_pixel_depth *= 2;
+ }
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ if (png_ptr->num_trans)
+ {
+ max_pixel_depth *= 4;
+ max_pixel_depth /= 3;
+ }
+ }
+ }
+#endif
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND_16)
+ {
+# ifdef PNG_READ_EXPAND_SUPPORTED
+ /* In fact it is an error if it isn't supported, but checking is
+ * the safe way.
+ */
+ if (png_ptr->transformations & PNG_EXPAND)
+ {
+ if (png_ptr->bit_depth < 16)
+ max_pixel_depth *= 2;
+ }
+ else
+# endif
+ png_ptr->transformations &= ~PNG_EXPAND_16;
+ }
+#endif
+
+#ifdef PNG_READ_FILLER_SUPPORTED
+ if (png_ptr->transformations & (PNG_FILLER))
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (max_pixel_depth <= 8)
+ max_pixel_depth = 16;
+
+ else
+ max_pixel_depth = 32;
+ }
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB ||
+ png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (max_pixel_depth <= 32)
+ max_pixel_depth = 32;
+
+ else
+ max_pixel_depth = 64;
+ }
+ }
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ if (png_ptr->transformations & PNG_GRAY_TO_RGB)
+ {
+ if (
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) ||
+#endif
+#ifdef PNG_READ_FILLER_SUPPORTED
+ (png_ptr->transformations & (PNG_FILLER)) ||
+#endif
+ png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ if (max_pixel_depth <= 16)
+ max_pixel_depth = 32;
+
+ else
+ max_pixel_depth = 64;
+ }
+
+ else
+ {
+ if (max_pixel_depth <= 8)
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ max_pixel_depth = 32;
+
+ else
+ max_pixel_depth = 24;
+ }
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ max_pixel_depth = 64;
+
+ else
+ max_pixel_depth = 48;
+ }
+ }
+#endif
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) && \
+defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
+ if (png_ptr->transformations & PNG_USER_TRANSFORM)
+ {
+ int user_pixel_depth = png_ptr->user_transform_depth *
+ png_ptr->user_transform_channels;
+
+ if (user_pixel_depth > max_pixel_depth)
+ max_pixel_depth = user_pixel_depth;
+ }
+#endif
+
+ /* This value is stored in png_struct and double checked in the row read
+ * code.
+ */
+ png_ptr->maximum_pixel_depth = (png_byte)max_pixel_depth;
+ png_ptr->transformed_pixel_depth = 0; /* calculated on demand */
+
+ /* Align the width on the next larger 8 pixels. Mainly used
+ * for interlacing
+ */
+ row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7));
+ /* Calculate the maximum bytes needed, adding a byte and a pixel
+ * for safety's sake
+ */
+ row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) +
+ 1 + ((max_pixel_depth + 7) >> 3);
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (row_bytes > (png_uint_32)65536L)
+ png_error(png_ptr, "This image requires a row greater than 64KB");
+#endif
+
+ if (row_bytes + 48 > png_ptr->old_big_row_buf_size)
+ {
+ png_free(png_ptr, png_ptr->big_row_buf);
+ png_free(png_ptr, png_ptr->big_prev_row);
+
+ if (png_ptr->interlaced)
+ png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
+ row_bytes + 48);
+
+ else
+ png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
+
+ png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
+
+#ifdef PNG_ALIGNED_MEMORY_SUPPORTED
+ /* Use 16-byte aligned memory for row_buf with at least 16 bytes
+ * of padding before and after row_buf; treat prev_row similarly.
+ * NOTE: the alignment is to the start of the pixels, one beyond the start
+ * of the buffer, because of the filter byte. Prior to libpng 1.5.6 this
+ * was incorrect; the filter byte was aligned, which had the exact
+ * opposite effect of that intended.
+ */
+ {
+ png_bytep temp = png_ptr->big_row_buf + 32;
+ int extra = (int)((temp - (png_bytep)0) & 0x0f);
+ png_ptr->row_buf = temp - extra - 1/*filter byte*/;
+
+ temp = png_ptr->big_prev_row + 32;
+ extra = (int)((temp - (png_bytep)0) & 0x0f);
+ png_ptr->prev_row = temp - extra - 1/*filter byte*/;
+ }
+
+#else
+ /* Use 31 bytes of padding before and 17 bytes after row_buf. */
+ png_ptr->row_buf = png_ptr->big_row_buf + 31;
+ png_ptr->prev_row = png_ptr->big_prev_row + 31;
+#endif
+ png_ptr->old_big_row_buf_size = row_bytes + 48;
+ }
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (png_ptr->rowbytes > 65535)
+ png_error(png_ptr, "This image requires a row greater than 64KB");
+
+#endif
+ if (png_ptr->rowbytes > (PNG_SIZE_MAX - 1))
+ png_error(png_ptr, "Row has too many bytes to allocate in memory");
+
+ memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+
+ png_debug1(3, "width = %u,", png_ptr->width);
+ png_debug1(3, "height = %u,", png_ptr->height);
+ png_debug1(3, "iwidth = %u,", png_ptr->iwidth);
+ png_debug1(3, "num_rows = %u,", png_ptr->num_rows);
+ png_debug1(3, "rowbytes = %lu,", (unsigned long)png_ptr->rowbytes);
+ png_debug1(3, "irowbytes = %lu",
+ (unsigned long)PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1);
+
+ /* The sequential reader needs a buffer for IDAT, but the progressive reader
+ * does not, so free the read buffer now regardless; the sequential reader
+ * reallocates it on demand.
+ */
+ if (png_ptr->read_buffer)
+ {
+ png_bytep buffer = png_ptr->read_buffer;
+
+ png_ptr->read_buffer_size = 0;
+ png_ptr->read_buffer = NULL;
+ png_free(png_ptr, buffer);
+ }
+
+ /* Finally claim the zstream for the inflate of the IDAT data, use the bits
+ * value from the stream (note that this will result in a fatal error if the
+ * IDAT stream has a bogus deflate header window_bits value, but this should
+ * not be happening any longer!)
+ */
+ if (png_inflate_claim(png_ptr, png_IDAT) != Z_OK)
+ png_error(png_ptr, png_ptr->zstream.msg);
+
+ png_ptr->flags |= PNG_FLAG_ROW_INIT;
+}
+#endif /* PNG_READ_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngset.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngset.c
new file mode 100644
index 0000000..8fd7445
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngset.c
@@ -0,0 +1,1598 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngset.c - storage of image information into info struct
+ *
+ * Last changed in libpng 1.6.3 [July 18, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * The functions here are used during reads to store data from the file
+ * into the info struct, and during writes to store application data
+ * into the info struct for writing into the file. This abstracts the
+ * info struct and allows us to change the structure in the future.
+ */
+
+#include "pngpriv.h"
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
+#ifdef PNG_bKGD_SUPPORTED
+void PNGAPI
+png_set_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_const_color_16p background)
+{
+ png_debug1(1, "in %s storage function", "bKGD");
+
+ if (png_ptr == NULL || info_ptr == NULL || background == NULL)
+ return;
+
+ info_ptr->background = *background;
+ info_ptr->valid |= PNG_INFO_bKGD;
+}
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+void PNGFAPI
+png_set_cHRM_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
+ png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
+ png_fixed_point blue_x, png_fixed_point blue_y)
+{
+ png_xy xy;
+
+ png_debug1(1, "in %s storage function", "cHRM fixed");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ xy.redx = red_x;
+ xy.redy = red_y;
+ xy.greenx = green_x;
+ xy.greeny = green_y;
+ xy.bluex = blue_x;
+ xy.bluey = blue_y;
+ xy.whitex = white_x;
+ xy.whitey = white_y;
+
+ if (png_colorspace_set_chromaticities(png_ptr, &info_ptr->colorspace, &xy,
+ 2/* override with app values*/))
+ info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
+
+ png_colorspace_sync_info(png_ptr, info_ptr);
+}
+
+void PNGFAPI
+png_set_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_fixed_point int_red_X, png_fixed_point int_red_Y,
+ png_fixed_point int_red_Z, png_fixed_point int_green_X,
+ png_fixed_point int_green_Y, png_fixed_point int_green_Z,
+ png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
+ png_fixed_point int_blue_Z)
+{
+ png_XYZ XYZ;
+
+ png_debug1(1, "in %s storage function", "cHRM XYZ fixed");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ XYZ.red_X = int_red_X;
+ XYZ.red_Y = int_red_Y;
+ XYZ.red_Z = int_red_Z;
+ XYZ.green_X = int_green_X;
+ XYZ.green_Y = int_green_Y;
+ XYZ.green_Z = int_green_Z;
+ XYZ.blue_X = int_blue_X;
+ XYZ.blue_Y = int_blue_Y;
+ XYZ.blue_Z = int_blue_Z;
+
+ if (png_colorspace_set_endpoints(png_ptr, &info_ptr->colorspace, &XYZ, 2))
+ info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
+
+ png_colorspace_sync_info(png_ptr, info_ptr);
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_cHRM(png_const_structrp png_ptr, png_inforp info_ptr,
+ double white_x, double white_y, double red_x, double red_y,
+ double green_x, double green_y, double blue_x, double blue_y)
+{
+ png_set_cHRM_fixed(png_ptr, info_ptr,
+ png_fixed(png_ptr, white_x, "cHRM White X"),
+ png_fixed(png_ptr, white_y, "cHRM White Y"),
+ png_fixed(png_ptr, red_x, "cHRM Red X"),
+ png_fixed(png_ptr, red_y, "cHRM Red Y"),
+ png_fixed(png_ptr, green_x, "cHRM Green X"),
+ png_fixed(png_ptr, green_y, "cHRM Green Y"),
+ png_fixed(png_ptr, blue_x, "cHRM Blue X"),
+ png_fixed(png_ptr, blue_y, "cHRM Blue Y"));
+}
+
+void PNGAPI
+png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
+ double red_Y, double red_Z, double green_X, double green_Y, double green_Z,
+ double blue_X, double blue_Y, double blue_Z)
+{
+ png_set_cHRM_XYZ_fixed(png_ptr, info_ptr,
+ png_fixed(png_ptr, red_X, "cHRM Red X"),
+ png_fixed(png_ptr, red_Y, "cHRM Red Y"),
+ png_fixed(png_ptr, red_Z, "cHRM Red Z"),
+ png_fixed(png_ptr, green_X, "cHRM Red X"),
+ png_fixed(png_ptr, green_Y, "cHRM Red Y"),
+ png_fixed(png_ptr, green_Z, "cHRM Red Z"),
+ png_fixed(png_ptr, blue_X, "cHRM Red X"),
+ png_fixed(png_ptr, blue_Y, "cHRM Red Y"),
+ png_fixed(png_ptr, blue_Z, "cHRM Red Z"));
+}
+# endif /* PNG_FLOATING_POINT_SUPPORTED */
+
+#endif /* PNG_cHRM_SUPPORTED */
+
+#ifdef PNG_gAMA_SUPPORTED
+void PNGFAPI
+png_set_gAMA_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_fixed_point file_gamma)
+{
+ png_debug1(1, "in %s storage function", "gAMA");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ png_colorspace_set_gamma(png_ptr, &info_ptr->colorspace, file_gamma);
+ png_colorspace_sync_info(png_ptr, info_ptr);
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_gAMA(png_const_structrp png_ptr, png_inforp info_ptr, double file_gamma)
+{
+ png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma,
+ "png_set_gAMA"));
+}
+# endif
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+void PNGAPI
+png_set_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_const_uint_16p hist)
+{
+ int i;
+
+ png_debug1(1, "in %s storage function", "hIST");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (info_ptr->num_palette == 0 || info_ptr->num_palette
+ > PNG_MAX_PALETTE_LENGTH)
+ {
+ png_warning(png_ptr,
+ "Invalid palette size, hIST allocation skipped");
+
+ return;
+ }
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
+
+ /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in
+ * version 1.2.1
+ */
+ info_ptr->hist = png_voidcast(png_uint_16p, png_malloc_warn(png_ptr,
+ PNG_MAX_PALETTE_LENGTH * (sizeof (png_uint_16))));
+
+ if (info_ptr->hist == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for hIST chunk data");
+ return;
+ }
+
+ info_ptr->free_me |= PNG_FREE_HIST;
+
+ for (i = 0; i < info_ptr->num_palette; i++)
+ info_ptr->hist[i] = hist[i];
+
+ info_ptr->valid |= PNG_INFO_hIST;
+}
+#endif
+
+void PNGAPI
+png_set_IHDR(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_type, int compression_type,
+ int filter_type)
+{
+ png_debug1(1, "in %s storage function", "IHDR");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->width = width;
+ info_ptr->height = height;
+ info_ptr->bit_depth = (png_byte)bit_depth;
+ info_ptr->color_type = (png_byte)color_type;
+ info_ptr->compression_type = (png_byte)compression_type;
+ info_ptr->filter_type = (png_byte)filter_type;
+ info_ptr->interlace_type = (png_byte)interlace_type;
+
+ png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
+ info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
+ info_ptr->compression_type, info_ptr->filter_type);
+
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ info_ptr->channels = 1;
+
+ else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ info_ptr->channels = 3;
+
+ else
+ info_ptr->channels = 1;
+
+ if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
+ info_ptr->channels++;
+
+ info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
+
+ info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
+}
+
+#ifdef PNG_oFFs_SUPPORTED
+void PNGAPI
+png_set_oFFs(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_int_32 offset_x, png_int_32 offset_y, int unit_type)
+{
+ png_debug1(1, "in %s storage function", "oFFs");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->x_offset = offset_x;
+ info_ptr->y_offset = offset_y;
+ info_ptr->offset_unit_type = (png_byte)unit_type;
+ info_ptr->valid |= PNG_INFO_oFFs;
+}
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+void PNGAPI
+png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
+ int nparams, png_const_charp units, png_charpp params)
+{
+ png_size_t length;
+ int i;
+
+ png_debug1(1, "in %s storage function", "pCAL");
+
+ if (png_ptr == NULL || info_ptr == NULL || purpose == NULL || units == NULL
+ || (nparams > 0 && params == NULL))
+ return;
+
+ length = strlen(purpose) + 1;
+ png_debug1(3, "allocating purpose for info (%lu bytes)",
+ (unsigned long)length);
+
+ /* TODO: validate format of calibration name and unit name */
+
+ /* Check that the type matches the specification. */
+ if (type < 0 || type > 3)
+ png_error(png_ptr, "Invalid pCAL equation type");
+
+ if (nparams < 0 || nparams > 255)
+ png_error(png_ptr, "Invalid pCAL parameter count");
+
+ /* Validate params[nparams] */
+ for (i=0; i<nparams; ++i)
+ if (params[i] == NULL ||
+ !png_check_fp_string(params[i], strlen(params[i])))
+ png_error(png_ptr, "Invalid format for pCAL parameter");
+
+ info_ptr->pcal_purpose = png_voidcast(png_charp,
+ png_malloc_warn(png_ptr, length));
+
+ if (info_ptr->pcal_purpose == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for pCAL purpose");
+ return;
+ }
+
+ memcpy(info_ptr->pcal_purpose, purpose, length);
+
+ png_debug(3, "storing X0, X1, type, and nparams in info");
+ info_ptr->pcal_X0 = X0;
+ info_ptr->pcal_X1 = X1;
+ info_ptr->pcal_type = (png_byte)type;
+ info_ptr->pcal_nparams = (png_byte)nparams;
+
+ length = strlen(units) + 1;
+ png_debug1(3, "allocating units for info (%lu bytes)",
+ (unsigned long)length);
+
+ info_ptr->pcal_units = png_voidcast(png_charp,
+ png_malloc_warn(png_ptr, length));
+
+ if (info_ptr->pcal_units == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for pCAL units");
+ return;
+ }
+
+ memcpy(info_ptr->pcal_units, units, length);
+
+ info_ptr->pcal_params = png_voidcast(png_charpp, png_malloc_warn(png_ptr,
+ (png_size_t)((nparams + 1) * (sizeof (png_charp)))));
+
+ if (info_ptr->pcal_params == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for pCAL params");
+ return;
+ }
+
+ memset(info_ptr->pcal_params, 0, (nparams + 1) * (sizeof (png_charp)));
+
+ for (i = 0; i < nparams; i++)
+ {
+ length = strlen(params[i]) + 1;
+ png_debug2(3, "allocating parameter %d for info (%lu bytes)", i,
+ (unsigned long)length);
+
+ info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length);
+
+ if (info_ptr->pcal_params[i] == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for pCAL parameter");
+ return;
+ }
+
+ memcpy(info_ptr->pcal_params[i], params[i], length);
+ }
+
+ info_ptr->valid |= PNG_INFO_pCAL;
+ info_ptr->free_me |= PNG_FREE_PCAL;
+}
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+void PNGAPI
+png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
+ int unit, png_const_charp swidth, png_const_charp sheight)
+{
+ png_size_t lengthw = 0, lengthh = 0;
+
+ png_debug1(1, "in %s storage function", "sCAL");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ /* Double check the unit (should never get here with an invalid
+ * unit unless this is an API call.)
+ */
+ if (unit != 1 && unit != 2)
+ png_error(png_ptr, "Invalid sCAL unit");
+
+ if (swidth == NULL || (lengthw = strlen(swidth)) == 0 ||
+ swidth[0] == 45 /* '-' */ || !png_check_fp_string(swidth, lengthw))
+ png_error(png_ptr, "Invalid sCAL width");
+
+ if (sheight == NULL || (lengthh = strlen(sheight)) == 0 ||
+ sheight[0] == 45 /* '-' */ || !png_check_fp_string(sheight, lengthh))
+ png_error(png_ptr, "Invalid sCAL height");
+
+ info_ptr->scal_unit = (png_byte)unit;
+
+ ++lengthw;
+
+ png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthw);
+
+ info_ptr->scal_s_width = png_voidcast(png_charp,
+ png_malloc_warn(png_ptr, lengthw));
+
+ if (info_ptr->scal_s_width == NULL)
+ {
+ png_warning(png_ptr, "Memory allocation failed while processing sCAL");
+ return;
+ }
+
+ memcpy(info_ptr->scal_s_width, swidth, lengthw);
+
+ ++lengthh;
+
+ png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthh);
+
+ info_ptr->scal_s_height = png_voidcast(png_charp,
+ png_malloc_warn(png_ptr, lengthh));
+
+ if (info_ptr->scal_s_height == NULL)
+ {
+ png_free (png_ptr, info_ptr->scal_s_width);
+ info_ptr->scal_s_width = NULL;
+
+ png_warning(png_ptr, "Memory allocation failed while processing sCAL");
+ return;
+ }
+
+ memcpy(info_ptr->scal_s_height, sheight, lengthh);
+
+ info_ptr->valid |= PNG_INFO_sCAL;
+ info_ptr->free_me |= PNG_FREE_SCAL;
+}
+
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_sCAL(png_const_structrp png_ptr, png_inforp info_ptr, int unit,
+ double width, double height)
+{
+ png_debug1(1, "in %s storage function", "sCAL");
+
+ /* Check the arguments. */
+ if (width <= 0)
+ png_warning(png_ptr, "Invalid sCAL width ignored");
+
+ else if (height <= 0)
+ png_warning(png_ptr, "Invalid sCAL height ignored");
+
+ else
+ {
+ /* Convert 'width' and 'height' to ASCII. */
+ char swidth[PNG_sCAL_MAX_DIGITS+1];
+ char sheight[PNG_sCAL_MAX_DIGITS+1];
+
+ png_ascii_from_fp(png_ptr, swidth, (sizeof swidth), width,
+ PNG_sCAL_PRECISION);
+ png_ascii_from_fp(png_ptr, sheight, (sizeof sheight), height,
+ PNG_sCAL_PRECISION);
+
+ png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight);
+ }
+}
+# endif
+
+# ifdef PNG_FIXED_POINT_SUPPORTED
+void PNGAPI
+png_set_sCAL_fixed(png_const_structrp png_ptr, png_inforp info_ptr, int unit,
+ png_fixed_point width, png_fixed_point height)
+{
+ png_debug1(1, "in %s storage function", "sCAL");
+
+ /* Check the arguments. */
+ if (width <= 0)
+ png_warning(png_ptr, "Invalid sCAL width ignored");
+
+ else if (height <= 0)
+ png_warning(png_ptr, "Invalid sCAL height ignored");
+
+ else
+ {
+ /* Convert 'width' and 'height' to ASCII. */
+ char swidth[PNG_sCAL_MAX_DIGITS+1];
+ char sheight[PNG_sCAL_MAX_DIGITS+1];
+
+ png_ascii_from_fixed(png_ptr, swidth, (sizeof swidth), width);
+ png_ascii_from_fixed(png_ptr, sheight, (sizeof sheight), height);
+
+ png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight);
+ }
+}
+# endif
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+void PNGAPI
+png_set_pHYs(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_uint_32 res_x, png_uint_32 res_y, int unit_type)
+{
+ png_debug1(1, "in %s storage function", "pHYs");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->x_pixels_per_unit = res_x;
+ info_ptr->y_pixels_per_unit = res_y;
+ info_ptr->phys_unit_type = (png_byte)unit_type;
+ info_ptr->valid |= PNG_INFO_pHYs;
+}
+#endif
+
+void PNGAPI
+png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
+ png_const_colorp palette, int num_palette)
+{
+
+ png_debug1(1, "in %s storage function", "PLTE");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH)
+ {
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ png_error(png_ptr, "Invalid palette length");
+
+ else
+ {
+ png_warning(png_ptr, "Invalid palette length");
+ return;
+ }
+ }
+
+ if ((num_palette > 0 && palette == NULL) ||
+ (num_palette == 0
+# ifdef PNG_MNG_FEATURES_SUPPORTED
+ && (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0
+# endif
+ ))
+ {
+ png_chunk_report(png_ptr, "Invalid palette", PNG_CHUNK_ERROR);
+ return;
+ }
+
+ /* It may not actually be necessary to set png_ptr->palette here;
+ * we do it for backward compatibility with the way the png_handle_tRNS
+ * function used to do the allocation.
+ *
+ * 1.6.0: the above statement appears to be incorrect; something has to set
+ * the palette inside png_struct on read.
+ */
+ png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
+
+ /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
+ * of num_palette entries, in case of an invalid PNG file that has
+ * too-large sample values.
+ */
+ png_ptr->palette = png_voidcast(png_colorp, png_calloc(png_ptr,
+ PNG_MAX_PALETTE_LENGTH * (sizeof (png_color))));
+
+ if (num_palette > 0)
+ memcpy(png_ptr->palette, palette, num_palette * (sizeof (png_color)));
+ info_ptr->palette = png_ptr->palette;
+ info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
+
+ info_ptr->free_me |= PNG_FREE_PLTE;
+
+ info_ptr->valid |= PNG_INFO_PLTE;
+}
+
+#ifdef PNG_sBIT_SUPPORTED
+void PNGAPI
+png_set_sBIT(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_const_color_8p sig_bit)
+{
+ png_debug1(1, "in %s storage function", "sBIT");
+
+ if (png_ptr == NULL || info_ptr == NULL || sig_bit == NULL)
+ return;
+
+ info_ptr->sig_bit = *sig_bit;
+ info_ptr->valid |= PNG_INFO_sBIT;
+}
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+void PNGAPI
+png_set_sRGB(png_const_structrp png_ptr, png_inforp info_ptr, int srgb_intent)
+{
+ png_debug1(1, "in %s storage function", "sRGB");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ (void)png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent);
+ png_colorspace_sync_info(png_ptr, info_ptr);
+}
+
+void PNGAPI
+png_set_sRGB_gAMA_and_cHRM(png_const_structrp png_ptr, png_inforp info_ptr,
+ int srgb_intent)
+{
+ png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent))
+ {
+ /* This causes the gAMA and cHRM to be written too */
+ info_ptr->colorspace.flags |=
+ PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM;
+ }
+
+ png_colorspace_sync_info(png_ptr, info_ptr);
+}
+#endif /* sRGB */
+
+
+#ifdef PNG_iCCP_SUPPORTED
+void PNGAPI
+png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_const_charp name, int compression_type,
+ png_const_bytep profile, png_uint_32 proflen)
+{
+ png_charp new_iccp_name;
+ png_bytep new_iccp_profile;
+ png_size_t length;
+
+ png_debug1(1, "in %s storage function", "iCCP");
+
+ if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
+ return;
+
+ if (compression_type != PNG_COMPRESSION_TYPE_BASE)
+ png_app_error(png_ptr, "Invalid iCCP compression method");
+
+ /* Set the colorspace first because this validates the profile; do not
+ * override previously set app cHRM or gAMA here (because likely as not the
+ * application knows better than libpng what the correct values are.) Pass
+ * the info_ptr color_type field to png_colorspace_set_ICC because in the
+ * write case it has not yet been stored in png_ptr.
+ */
+ {
+ int result = png_colorspace_set_ICC(png_ptr, &info_ptr->colorspace, name,
+ proflen, profile, info_ptr->color_type);
+
+ png_colorspace_sync_info(png_ptr, info_ptr);
+
+ /* Don't do any of the copying if the profile was bad, or inconsistent. */
+ if (!result)
+ return;
+
+ /* But do write the gAMA and cHRM chunks from the profile. */
+ info_ptr->colorspace.flags |=
+ PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM;
+ }
+
+ length = strlen(name)+1;
+ new_iccp_name = png_voidcast(png_charp, png_malloc_warn(png_ptr, length));
+
+ if (new_iccp_name == NULL)
+ {
+ png_benign_error(png_ptr, "Insufficient memory to process iCCP chunk");
+ return;
+ }
+
+ memcpy(new_iccp_name, name, length);
+ new_iccp_profile = png_voidcast(png_bytep,
+ png_malloc_warn(png_ptr, proflen));
+
+ if (new_iccp_profile == NULL)
+ {
+ png_free(png_ptr, new_iccp_name);
+ png_benign_error(png_ptr,
+ "Insufficient memory to process iCCP profile");
+ return;
+ }
+
+ memcpy(new_iccp_profile, profile, proflen);
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
+
+ info_ptr->iccp_proflen = proflen;
+ info_ptr->iccp_name = new_iccp_name;
+ info_ptr->iccp_profile = new_iccp_profile;
+ info_ptr->free_me |= PNG_FREE_ICCP;
+ info_ptr->valid |= PNG_INFO_iCCP;
+}
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+void PNGAPI
+png_set_text(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_const_textp text_ptr, int num_text)
+{
+ int ret;
+ ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text);
+
+ if (ret)
+ png_error(png_ptr, "Insufficient memory to store text");
+}
+
+int /* PRIVATE */
+png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_const_textp text_ptr, int num_text)
+{
+ int i;
+
+ png_debug1(1, "in %lx storage function", png_ptr == NULL ? "unexpected" :
+ (unsigned long)png_ptr->chunk_name);
+
+ if (png_ptr == NULL || info_ptr == NULL || num_text <= 0 || text_ptr == NULL)
+ return(0);
+
+ /* Make sure we have enough space in the "text" array in info_struct
+ * to hold all of the incoming text_ptr objects. This compare can't overflow
+ * because max_text >= num_text (anyway, subtract of two positive integers
+ * can't overflow in any case.)
+ */
+ if (num_text > info_ptr->max_text - info_ptr->num_text)
+ {
+ int old_num_text = info_ptr->num_text;
+ int max_text;
+ png_textp new_text = NULL;
+
+ /* Calculate an appropriate max_text, checking for overflow. */
+ max_text = old_num_text;
+ if (num_text <= INT_MAX - max_text)
+ {
+ max_text += num_text;
+
+ /* Round up to a multiple of 8 */
+ if (max_text < INT_MAX-8)
+ max_text = (max_text + 8) & ~0x7;
+
+ else
+ max_text = INT_MAX;
+
+ /* Now allocate a new array and copy the old members in, this does all
+ * the overflow checks.
+ */
+ new_text = png_voidcast(png_textp,png_realloc_array(png_ptr,
+ info_ptr->text, old_num_text, max_text-old_num_text,
+ sizeof *new_text));
+ }
+
+ if (new_text == NULL)
+ {
+ png_chunk_report(png_ptr, "too many text chunks",
+ PNG_CHUNK_WRITE_ERROR);
+ return 1;
+ }
+
+ png_free(png_ptr, info_ptr->text);
+
+ info_ptr->text = new_text;
+ info_ptr->free_me |= PNG_FREE_TEXT;
+ info_ptr->max_text = max_text;
+ /* num_text is adjusted below as the entries are copied in */
+
+ png_debug1(3, "allocated %d entries for info_ptr->text", max_text);
+ }
+
+ for (i = 0; i < num_text; i++)
+ {
+ size_t text_length, key_len;
+ size_t lang_len, lang_key_len;
+ png_textp textp = &(info_ptr->text[info_ptr->num_text]);
+
+ if (text_ptr[i].key == NULL)
+ continue;
+
+ if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE ||
+ text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST)
+ {
+ png_chunk_report(png_ptr, "text compression mode is out of range",
+ PNG_CHUNK_WRITE_ERROR);
+ continue;
+ }
+
+ key_len = strlen(text_ptr[i].key);
+
+ if (text_ptr[i].compression <= 0)
+ {
+ lang_len = 0;
+ lang_key_len = 0;
+ }
+
+ else
+# ifdef PNG_iTXt_SUPPORTED
+ {
+ /* Set iTXt data */
+
+ if (text_ptr[i].lang != NULL)
+ lang_len = strlen(text_ptr[i].lang);
+
+ else
+ lang_len = 0;
+
+ if (text_ptr[i].lang_key != NULL)
+ lang_key_len = strlen(text_ptr[i].lang_key);
+
+ else
+ lang_key_len = 0;
+ }
+# else /* PNG_iTXt_SUPPORTED */
+ {
+ png_chunk_report(png_ptr, "iTXt chunk not supported",
+ PNG_CHUNK_WRITE_ERROR);
+ continue;
+ }
+# endif
+
+ if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
+ {
+ text_length = 0;
+# ifdef PNG_iTXt_SUPPORTED
+ if (text_ptr[i].compression > 0)
+ textp->compression = PNG_ITXT_COMPRESSION_NONE;
+
+ else
+# endif
+ textp->compression = PNG_TEXT_COMPRESSION_NONE;
+ }
+
+ else
+ {
+ text_length = strlen(text_ptr[i].text);
+ textp->compression = text_ptr[i].compression;
+ }
+
+ textp->key = png_voidcast(png_charp,png_malloc_base(png_ptr,
+ key_len + text_length + lang_len + lang_key_len + 4));
+
+ if (textp->key == NULL)
+ {
+ png_chunk_report(png_ptr, "text chunk: out of memory",
+ PNG_CHUNK_WRITE_ERROR);
+ return 1;
+ }
+
+ png_debug2(2, "Allocated %lu bytes at %p in png_set_text",
+ (unsigned long)(png_uint_32)
+ (key_len + lang_len + lang_key_len + text_length + 4),
+ textp->key);
+
+ memcpy(textp->key, text_ptr[i].key, key_len);
+ *(textp->key + key_len) = '\0';
+
+ if (text_ptr[i].compression > 0)
+ {
+ textp->lang = textp->key + key_len + 1;
+ memcpy(textp->lang, text_ptr[i].lang, lang_len);
+ *(textp->lang + lang_len) = '\0';
+ textp->lang_key = textp->lang + lang_len + 1;
+ memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len);
+ *(textp->lang_key + lang_key_len) = '\0';
+ textp->text = textp->lang_key + lang_key_len + 1;
+ }
+
+ else
+ {
+ textp->lang=NULL;
+ textp->lang_key=NULL;
+ textp->text = textp->key + key_len + 1;
+ }
+
+ if (text_length)
+ memcpy(textp->text, text_ptr[i].text, text_length);
+
+ *(textp->text + text_length) = '\0';
+
+# ifdef PNG_iTXt_SUPPORTED
+ if (textp->compression > 0)
+ {
+ textp->text_length = 0;
+ textp->itxt_length = text_length;
+ }
+
+ else
+# endif
+ {
+ textp->text_length = text_length;
+ textp->itxt_length = 0;
+ }
+
+ info_ptr->num_text++;
+ png_debug1(3, "transferred text chunk %d", info_ptr->num_text);
+ }
+
+ return(0);
+}
+#endif
+
+#ifdef PNG_tIME_SUPPORTED
+void PNGAPI
+png_set_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_const_timep mod_time)
+{
+ png_debug1(1, "in %s storage function", "tIME");
+
+ if (png_ptr == NULL || info_ptr == NULL || mod_time == NULL ||
+ (png_ptr->mode & PNG_WROTE_tIME))
+ return;
+
+ if (mod_time->month == 0 || mod_time->month > 12 ||
+ mod_time->day == 0 || mod_time->day > 31 ||
+ mod_time->hour > 23 || mod_time->minute > 59 ||
+ mod_time->second > 60)
+ {
+ png_warning(png_ptr, "Ignoring invalid time value");
+ return;
+ }
+
+ info_ptr->mod_time = *mod_time;
+ info_ptr->valid |= PNG_INFO_tIME;
+}
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+void PNGAPI
+png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
+ png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color)
+{
+ png_debug1(1, "in %s storage function", "tRNS");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (trans_alpha != NULL)
+ {
+ /* It may not actually be necessary to set png_ptr->trans_alpha here;
+ * we do it for backward compatibility with the way the png_handle_tRNS
+ * function used to do the allocation.
+ *
+ * 1.6.0: The above statement is incorrect; png_handle_tRNS effectively
+ * relies on png_set_tRNS storing the information in png_struct
+ * (otherwise it won't be there for the code in pngrtran.c).
+ */
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
+
+ /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
+ png_ptr->trans_alpha = info_ptr->trans_alpha = png_voidcast(png_bytep,
+ png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
+
+ if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
+ memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
+ }
+
+ if (trans_color != NULL)
+ {
+ int sample_max = (1 << info_ptr->bit_depth);
+
+ if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
+ trans_color->gray > sample_max) ||
+ (info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+ (trans_color->red > sample_max ||
+ trans_color->green > sample_max ||
+ trans_color->blue > sample_max)))
+ png_warning(png_ptr,
+ "tRNS chunk has out-of-range samples for bit_depth");
+
+ info_ptr->trans_color = *trans_color;
+
+ if (num_trans == 0)
+ num_trans = 1;
+ }
+
+ info_ptr->num_trans = (png_uint_16)num_trans;
+
+ if (num_trans != 0)
+ {
+ info_ptr->valid |= PNG_INFO_tRNS;
+ info_ptr->free_me |= PNG_FREE_TRNS;
+ }
+}
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+void PNGAPI
+png_set_sPLT(png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_sPLT_tp entries, int nentries)
+/*
+ * entries - array of png_sPLT_t structures
+ * to be added to the list of palettes
+ * in the info structure.
+ *
+ * nentries - number of palette structures to be
+ * added.
+ */
+{
+ png_sPLT_tp np;
+
+ if (png_ptr == NULL || info_ptr == NULL || nentries <= 0 || entries == NULL)
+ return;
+
+ /* Use the internal realloc function, which checks for all the possible
+ * overflows. Notice that the parameters are (int) and (size_t)
+ */
+ np = png_voidcast(png_sPLT_tp,png_realloc_array(png_ptr,
+ info_ptr->splt_palettes, info_ptr->splt_palettes_num, nentries,
+ sizeof *np));
+
+ if (np == NULL)
+ {
+ /* Out of memory or too many chunks */
+ png_chunk_report(png_ptr, "too many sPLT chunks", PNG_CHUNK_WRITE_ERROR);
+ return;
+ }
+
+ png_free(png_ptr, info_ptr->splt_palettes);
+ info_ptr->splt_palettes = np;
+ info_ptr->free_me |= PNG_FREE_SPLT;
+
+ np += info_ptr->splt_palettes_num;
+
+ do
+ {
+ png_size_t length;
+
+ /* Skip invalid input entries */
+ if (entries->name == NULL || entries->entries == NULL)
+ {
+ /* png_handle_sPLT doesn't do this, so this is an app error */
+ png_app_error(png_ptr, "png_set_sPLT: invalid sPLT");
+ /* Just skip the invalid entry */
+ continue;
+ }
+
+ np->depth = entries->depth;
+
+ /* In the even of out-of-memory just return - there's no point keeping on
+ * trying to add sPLT chunks.
+ */
+ length = strlen(entries->name) + 1;
+ np->name = png_voidcast(png_charp, png_malloc_base(png_ptr, length));
+
+ if (np->name == NULL)
+ break;
+
+ memcpy(np->name, entries->name, length);
+
+ /* IMPORTANT: we have memory now that won't get freed if something else
+ * goes wrong, this code must free it. png_malloc_array produces no
+ * warnings, use a png_chunk_report (below) if there is an error.
+ */
+ np->entries = png_voidcast(png_sPLT_entryp, png_malloc_array(png_ptr,
+ entries->nentries, sizeof (png_sPLT_entry)));
+
+ if (np->entries == NULL)
+ {
+ png_free(png_ptr, np->name);
+ break;
+ }
+
+ np->nentries = entries->nentries;
+ /* This multiply can't overflow because png_malloc_array has already
+ * checked it when doing the allocation.
+ */
+ memcpy(np->entries, entries->entries,
+ entries->nentries * sizeof (png_sPLT_entry));
+
+ /* Note that 'continue' skips the advance of the out pointer and out
+ * count, so an invalid entry is not added.
+ */
+ info_ptr->valid |= PNG_INFO_sPLT;
+ ++(info_ptr->splt_palettes_num);
+ ++np;
+ }
+ while (++entries, --nentries);
+
+ if (nentries > 0)
+ png_chunk_report(png_ptr, "sPLT out of memory", PNG_CHUNK_WRITE_ERROR);
+}
+#endif /* PNG_sPLT_SUPPORTED */
+
+#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+static png_byte
+check_location(png_const_structrp png_ptr, int location)
+{
+ location &= (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT);
+
+ /* New in 1.6.0; copy the location and check it. This is an API
+ * change, previously the app had to use the
+ * png_set_unknown_chunk_location API below for each chunk.
+ */
+ if (location == 0 && !(png_ptr->mode & PNG_IS_READ_STRUCT))
+ {
+ /* Write struct, so unknown chunks come from the app */
+ png_app_warning(png_ptr,
+ "png_set_unknown_chunks now expects a valid location");
+ /* Use the old behavior */
+ location = (png_byte)(png_ptr->mode &
+ (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT));
+ }
+
+ /* This need not be an internal error - if the app calls
+ * png_set_unknown_chunks on a read pointer it must get the location right.
+ */
+ if (location == 0)
+ png_error(png_ptr, "invalid location in png_set_unknown_chunks");
+
+ /* Now reduce the location to the top-most set bit by removing each least
+ * significant bit in turn.
+ */
+ while (location != (location & -location))
+ location &= ~(location & -location);
+
+ /* The cast is safe because 'location' is a bit mask and only the low four
+ * bits are significant.
+ */
+ return (png_byte)location;
+}
+
+void PNGAPI
+png_set_unknown_chunks(png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
+{
+ png_unknown_chunkp np;
+
+ if (png_ptr == NULL || info_ptr == NULL || num_unknowns <= 0 ||
+ unknowns == NULL)
+ return;
+
+ /* Check for the failure cases where support has been disabled at compile
+ * time. This code is hardly ever compiled - it's here because
+ * STORE_UNKNOWN_CHUNKS is set by both read and write code (compiling in this
+ * code) but may be meaningless if the read or write handling of unknown
+ * chunks is not compiled in.
+ */
+# if !defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) && \
+ defined(PNG_READ_SUPPORTED)
+ if (png_ptr->mode & PNG_IS_READ_STRUCT)
+ {
+ png_app_error(png_ptr, "no unknown chunk support on read");
+ return;
+ }
+# endif
+# if !defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED) && \
+ defined(PNG_WRITE_SUPPORTED)
+ if (!(png_ptr->mode & PNG_IS_READ_STRUCT))
+ {
+ png_app_error(png_ptr, "no unknown chunk support on write");
+ return;
+ }
+# endif
+
+ /* Prior to 1.6.0 this code used png_malloc_warn; however, this meant that
+ * unknown critical chunks could be lost with just a warning resulting in
+ * undefined behavior. Now png_chunk_report is used to provide behavior
+ * appropriate to read or write.
+ */
+ np = png_voidcast(png_unknown_chunkp, png_realloc_array(png_ptr,
+ info_ptr->unknown_chunks, info_ptr->unknown_chunks_num, num_unknowns,
+ sizeof *np));
+
+ if (np == NULL)
+ {
+ png_chunk_report(png_ptr, "too many unknown chunks",
+ PNG_CHUNK_WRITE_ERROR);
+ return;
+ }
+
+ png_free(png_ptr, info_ptr->unknown_chunks);
+ info_ptr->unknown_chunks = np; /* safe because it is initialized */
+ info_ptr->free_me |= PNG_FREE_UNKN;
+
+ np += info_ptr->unknown_chunks_num;
+
+ /* Increment unknown_chunks_num each time round the loop to protect the
+ * just-allocated chunk data.
+ */
+ for (; num_unknowns > 0; --num_unknowns, ++unknowns)
+ {
+ memcpy(np->name, unknowns->name, (sizeof np->name));
+ np->name[(sizeof np->name)-1] = '\0';
+ np->location = check_location(png_ptr, unknowns->location);
+
+ if (unknowns->size == 0)
+ {
+ np->data = NULL;
+ np->size = 0;
+ }
+
+ else
+ {
+ np->data = png_voidcast(png_bytep,
+ png_malloc_base(png_ptr, unknowns->size));
+
+ if (np->data == NULL)
+ {
+ png_chunk_report(png_ptr, "unknown chunk: out of memory",
+ PNG_CHUNK_WRITE_ERROR);
+ /* But just skip storing the unknown chunk */
+ continue;
+ }
+
+ memcpy(np->data, unknowns->data, unknowns->size);
+ np->size = unknowns->size;
+ }
+
+ /* These increments are skipped on out-of-memory for the data - the
+ * unknown chunk entry gets overwritten if the png_chunk_report returns.
+ * This is correct in the read case (the chunk is just dropped.)
+ */
+ ++np;
+ ++(info_ptr->unknown_chunks_num);
+ }
+}
+
+void PNGAPI
+png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr,
+ int chunk, int location)
+{
+ /* This API is pretty pointless in 1.6.0 because the location can be set
+ * before the call to png_set_unknown_chunks.
+ *
+ * TODO: add a png_app_warning in 1.7
+ */
+ if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 &&
+ chunk < info_ptr->unknown_chunks_num)
+ {
+ if ((location & (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT)) == 0)
+ {
+ png_app_error(png_ptr, "invalid unknown chunk location");
+ /* Fake out the pre 1.6.0 behavior: */
+ if ((location & PNG_HAVE_IDAT)) /* undocumented! */
+ location = PNG_AFTER_IDAT;
+
+ else
+ location = PNG_HAVE_IHDR; /* also undocumented */
+ }
+
+ info_ptr->unknown_chunks[chunk].location =
+ check_location(png_ptr, location);
+ }
+}
+#endif
+
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+png_uint_32 PNGAPI
+png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features)
+{
+ png_debug(1, "in png_permit_mng_features");
+
+ if (png_ptr == NULL)
+ return 0;
+
+ png_ptr->mng_features_permitted = mng_features & PNG_ALL_MNG_FEATURES;
+
+ return png_ptr->mng_features_permitted;
+}
+#endif
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+static unsigned int
+add_one_chunk(png_bytep list, unsigned int count, png_const_bytep add, int keep)
+{
+ unsigned int i;
+
+ /* Utility function: update the 'keep' state of a chunk if it is already in
+ * the list, otherwise add it to the list.
+ */
+ for (i=0; i<count; ++i, list += 5) if (memcmp(list, add, 4) == 0)
+ {
+ list[4] = (png_byte)keep;
+ return count;
+ }
+
+ if (keep != PNG_HANDLE_CHUNK_AS_DEFAULT)
+ {
+ ++count;
+ memcpy(list, add, 4);
+ list[4] = (png_byte)keep;
+ }
+
+ return count;
+}
+
+void PNGAPI
+png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
+ png_const_bytep chunk_list, int num_chunks_in)
+{
+ png_bytep new_list;
+ unsigned int num_chunks, old_num_chunks;
+
+ if (png_ptr == NULL)
+ return;
+
+ if (keep < 0 || keep >= PNG_HANDLE_CHUNK_LAST)
+ {
+ png_app_error(png_ptr, "png_set_keep_unknown_chunks: invalid keep");
+ return;
+ }
+
+ if (num_chunks_in <= 0)
+ {
+ png_ptr->unknown_default = keep;
+
+ /* '0' means just set the flags, so stop here */
+ if (num_chunks_in == 0)
+ return;
+ }
+
+ if (num_chunks_in < 0)
+ {
+ /* Ignore all unknown chunks and all chunks recognized by
+ * libpng except for IHDR, PLTE, tRNS, IDAT, and IEND
+ */
+ static PNG_CONST png_byte chunks_to_ignore[] = {
+ 98, 75, 71, 68, '\0', /* bKGD */
+ 99, 72, 82, 77, '\0', /* cHRM */
+ 103, 65, 77, 65, '\0', /* gAMA */
+ 104, 73, 83, 84, '\0', /* hIST */
+ 105, 67, 67, 80, '\0', /* iCCP */
+ 105, 84, 88, 116, '\0', /* iTXt */
+ 111, 70, 70, 115, '\0', /* oFFs */
+ 112, 67, 65, 76, '\0', /* pCAL */
+ 112, 72, 89, 115, '\0', /* pHYs */
+ 115, 66, 73, 84, '\0', /* sBIT */
+ 115, 67, 65, 76, '\0', /* sCAL */
+ 115, 80, 76, 84, '\0', /* sPLT */
+ 115, 84, 69, 82, '\0', /* sTER */
+ 115, 82, 71, 66, '\0', /* sRGB */
+ 116, 69, 88, 116, '\0', /* tEXt */
+ 116, 73, 77, 69, '\0', /* tIME */
+ 122, 84, 88, 116, '\0' /* zTXt */
+ };
+
+ chunk_list = chunks_to_ignore;
+ num_chunks = (sizeof chunks_to_ignore)/5;
+ }
+
+ else /* num_chunks_in > 0 */
+ {
+ if (chunk_list == NULL)
+ {
+ /* Prior to 1.6.0 this was silently ignored, now it is an app_error
+ * which can be switched off.
+ */
+ png_app_error(png_ptr, "png_set_keep_unknown_chunks: no chunk list");
+ return;
+ }
+
+ num_chunks = num_chunks_in;
+ }
+
+ old_num_chunks = png_ptr->num_chunk_list;
+ if (png_ptr->chunk_list == NULL)
+ old_num_chunks = 0;
+
+ /* Since num_chunks is always restricted to UINT_MAX/5 this can't overflow.
+ */
+ if (num_chunks + old_num_chunks > UINT_MAX/5)
+ {
+ png_app_error(png_ptr, "png_set_keep_unknown_chunks: too many chunks");
+ return;
+ }
+
+ /* If these chunks are being reset to the default then no more memory is
+ * required because add_one_chunk above doesn't extend the list if the 'keep'
+ * parameter is the default.
+ */
+ if (keep)
+ {
+ new_list = png_voidcast(png_bytep, png_malloc(png_ptr,
+ 5 * (num_chunks + old_num_chunks)));
+
+ if (old_num_chunks > 0)
+ memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks);
+ }
+
+ else if (old_num_chunks > 0)
+ new_list = png_ptr->chunk_list;
+
+ else
+ new_list = NULL;
+
+ /* Add the new chunks together with each one's handling code. If the chunk
+ * already exists the code is updated, otherwise the chunk is added to the
+ * end. (In libpng 1.6.0 order no longer matters because this code enforces
+ * the earlier convention that the last setting is the one that is used.)
+ */
+ if (new_list != NULL)
+ {
+ png_const_bytep inlist;
+ png_bytep outlist;
+ unsigned int i;
+
+ for (i=0; i<num_chunks; ++i)
+ old_num_chunks = add_one_chunk(new_list, old_num_chunks,
+ chunk_list+5*i, keep);
+
+ /* Now remove any spurious 'default' entries. */
+ num_chunks = 0;
+ for (i=0, inlist=outlist=new_list; i<old_num_chunks; ++i, inlist += 5)
+ if (inlist[4])
+ {
+ if (outlist != inlist)
+ memcpy(outlist, inlist, 5);
+ outlist += 5;
+ ++num_chunks;
+ }
+
+ /* This means the application has removed all the specialized handling. */
+ if (num_chunks == 0)
+ {
+ if (png_ptr->chunk_list != new_list)
+ png_free(png_ptr, new_list);
+
+ new_list = NULL;
+ }
+ }
+
+ else
+ num_chunks = 0;
+
+ png_ptr->num_chunk_list = num_chunks;
+
+ if (png_ptr->chunk_list != new_list)
+ {
+ if (png_ptr->chunk_list != NULL)
+ png_free(png_ptr, png_ptr->chunk_list);
+
+ png_ptr->chunk_list = new_list;
+ }
+}
+#endif
+
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+void PNGAPI
+png_set_read_user_chunk_fn(png_structrp png_ptr, png_voidp user_chunk_ptr,
+ png_user_chunk_ptr read_user_chunk_fn)
+{
+ png_debug(1, "in png_set_read_user_chunk_fn");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->read_user_chunk_fn = read_user_chunk_fn;
+ png_ptr->user_chunk_ptr = user_chunk_ptr;
+}
+#endif
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+void PNGAPI
+png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_bytepp row_pointers)
+{
+ png_debug1(1, "in %s storage function", "rows");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers))
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
+
+ info_ptr->row_pointers = row_pointers;
+
+ if (row_pointers)
+ info_ptr->valid |= PNG_INFO_IDAT;
+}
+#endif
+
+void PNGAPI
+png_set_compression_buffer_size(png_structrp png_ptr, png_size_t size)
+{
+ if (png_ptr == NULL)
+ return;
+
+ if (size == 0 || size > PNG_UINT_31_MAX)
+ png_error(png_ptr, "invalid compression buffer size");
+
+# ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+ if (png_ptr->mode & PNG_IS_READ_STRUCT)
+ {
+ png_ptr->IDAT_read_size = (png_uint_32)size; /* checked above */
+ return;
+ }
+# endif
+
+# ifdef PNG_WRITE_SUPPORTED
+ if (!(png_ptr->mode & PNG_IS_READ_STRUCT))
+ {
+ if (png_ptr->zowner != 0)
+ {
+ png_warning(png_ptr,
+ "Compression buffer size cannot be changed because it is in use");
+ return;
+ }
+
+ if (size > ZLIB_IO_MAX)
+ {
+ png_warning(png_ptr,
+ "Compression buffer size limited to system maximum");
+ size = ZLIB_IO_MAX; /* must fit */
+ }
+
+ else if (size < 6)
+ {
+ /* Deflate will potentially go into an infinite loop on a SYNC_FLUSH
+ * if this is permitted.
+ */
+ png_warning(png_ptr,
+ "Compression buffer size cannot be reduced below 6");
+ return;
+ }
+
+ if (png_ptr->zbuffer_size != size)
+ {
+ png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
+ png_ptr->zbuffer_size = (uInt)size;
+ }
+ }
+# endif
+}
+
+void PNGAPI
+png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask)
+{
+ if (png_ptr && info_ptr)
+ info_ptr->valid &= ~mask;
+}
+
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+/* This function was added to libpng 1.2.6 */
+void PNGAPI
+png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
+ png_uint_32 user_height_max)
+{
+ /* Images with dimensions larger than these limits will be
+ * rejected by png_set_IHDR(). To accept any PNG datastream
+ * regardless of dimensions, set both limits to 0x7ffffffL.
+ */
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->user_width_max = user_width_max;
+ png_ptr->user_height_max = user_height_max;
+}
+
+/* This function was added to libpng 1.4.0 */
+void PNGAPI
+png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
+{
+ if (png_ptr)
+ png_ptr->user_chunk_cache_max = user_chunk_cache_max;
+}
+
+/* This function was added to libpng 1.4.1 */
+void PNGAPI
+png_set_chunk_malloc_max (png_structrp png_ptr,
+ png_alloc_size_t user_chunk_malloc_max)
+{
+ if (png_ptr)
+ png_ptr->user_chunk_malloc_max = user_chunk_malloc_max;
+}
+#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
+
+
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+void PNGAPI
+png_set_benign_errors(png_structrp png_ptr, int allowed)
+{
+ png_debug(1, "in png_set_benign_errors");
+
+ /* If allowed is 1, png_benign_error() is treated as a warning.
+ *
+ * If allowed is 0, png_benign_error() is treated as an error (which
+ * is the default behavior if png_set_benign_errors() is not called).
+ */
+
+ if (allowed)
+ png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN |
+ PNG_FLAG_APP_WARNINGS_WARN | PNG_FLAG_APP_ERRORS_WARN;
+
+ else
+ png_ptr->flags &= ~(PNG_FLAG_BENIGN_ERRORS_WARN |
+ PNG_FLAG_APP_WARNINGS_WARN | PNG_FLAG_APP_ERRORS_WARN);
+}
+#endif /* PNG_BENIGN_ERRORS_SUPPORTED */
+
+#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ /* Whether to report invalid palette index; added at libng-1.5.10.
+ * It is possible for an indexed (color-type==3) PNG file to contain
+ * pixels with invalid (out-of-range) indexes if the PLTE chunk has
+ * fewer entries than the image's bit-depth would allow. We recover
+ * from this gracefully by filling any incomplete palette with zeroes
+ * (opaque black). By default, when this occurs libpng will issue
+ * a benign error. This API can be used to override that behavior.
+ */
+void PNGAPI
+png_set_check_for_invalid_index(png_structrp png_ptr, int allowed)
+{
+ png_debug(1, "in png_set_check_for_invalid_index");
+
+ if (allowed > 0)
+ png_ptr->num_palette_max = 0;
+
+ else
+ png_ptr->num_palette_max = -1;
+}
+#endif
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngtrans.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngtrans.c
new file mode 100644
index 0000000..a46b0fc
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngtrans.c
@@ -0,0 +1,842 @@
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+/* pngtrans.c - transforms the data in a row (used by both readers and writers)
+ *
+ * Last changed in libpng 1.6.2 [April 25, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#include "pngpriv.h"
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
+#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
+/* Turn on BGR-to-RGB mapping */
+void PNGAPI
+png_set_bgr(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_bgr");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= PNG_BGR;
+}
+#endif
+
+#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
+/* Turn on 16 bit byte swapping */
+void PNGAPI
+png_set_swap(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_swap");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (png_ptr->bit_depth == 16)
+ png_ptr->transformations |= PNG_SWAP_BYTES;
+}
+#endif
+
+#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
+/* Turn on pixel packing */
+void PNGAPI
+png_set_packing(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_packing");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (png_ptr->bit_depth < 8)
+ {
+ png_ptr->transformations |= PNG_PACK;
+ png_ptr->usr_bit_depth = 8;
+ }
+}
+#endif
+
+#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+/* Turn on packed pixel swapping */
+void PNGAPI
+png_set_packswap(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_packswap");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (png_ptr->bit_depth < 8)
+ png_ptr->transformations |= PNG_PACKSWAP;
+}
+#endif
+
+#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
+void PNGAPI
+png_set_shift(png_structrp png_ptr, png_const_color_8p true_bits)
+{
+ png_debug(1, "in png_set_shift");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= PNG_SHIFT;
+ png_ptr->shift = *true_bits;
+}
+#endif
+
+#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
+ defined(PNG_WRITE_INTERLACING_SUPPORTED)
+int PNGAPI
+png_set_interlace_handling(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_interlace handling");
+
+ if (png_ptr && png_ptr->interlaced)
+ {
+ png_ptr->transformations |= PNG_INTERLACE;
+ return (7);
+ }
+
+ return (1);
+}
+#endif
+
+#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+/* Add a filler byte on read, or remove a filler or alpha byte on write.
+ * The filler type has changed in v0.95 to allow future 2-byte fillers
+ * for 48-bit input data, as well as to avoid problems with some compilers
+ * that don't like bytes as parameters.
+ */
+void PNGAPI
+png_set_filler(png_structrp png_ptr, png_uint_32 filler, int filler_loc)
+{
+ png_debug(1, "in png_set_filler");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* In libpng 1.6 it is possible to determine whether this is a read or write
+ * operation and therefore to do more checking here for a valid call.
+ */
+ if (png_ptr->mode & PNG_IS_READ_STRUCT)
+ {
+# ifdef PNG_READ_FILLER_SUPPORTED
+ /* On read png_set_filler is always valid, regardless of the base PNG
+ * format, because other transformations can give a format where the
+ * filler code can execute (basically an 8 or 16-bit component RGB or G
+ * format.)
+ *
+ * NOTE: usr_channels is not used by the read code! (This has led to
+ * confusion in the past.) The filler is only used in the read code.
+ */
+ png_ptr->filler = (png_uint_16)filler;
+# else
+ png_app_error(png_ptr, "png_set_filler not supported on read");
+ PNG_UNUSED(filler) /* not used in the write case */
+ return;
+# endif
+ }
+
+ else /* write */
+ {
+# ifdef PNG_WRITE_FILLER_SUPPORTED
+ /* On write the usr_channels parameter must be set correctly at the
+ * start to record the number of channels in the app-supplied data.
+ */
+ switch (png_ptr->color_type)
+ {
+ case PNG_COLOR_TYPE_RGB:
+ png_ptr->usr_channels = 4;
+ break;
+
+ case PNG_COLOR_TYPE_GRAY:
+ if (png_ptr->bit_depth >= 8)
+ {
+ png_ptr->usr_channels = 2;
+ break;
+ }
+
+ else
+ {
+ /* There simply isn't any code in libpng to strip out bits
+ * from bytes when the components are less than a byte in
+ * size!
+ */
+ png_app_error(png_ptr,
+ "png_set_filler is invalid for low bit depth gray output");
+ return;
+ }
+
+ default:
+ png_app_error(png_ptr,
+ "png_set_filler: inappropriate color type");
+ return;
+ }
+# else
+ png_app_error(png_ptr, "png_set_filler not supported on write");
+ return;
+# endif
+ }
+
+ /* Here on success - libpng supports the operation, set the transformation
+ * and the flag to say where the filler channel is.
+ */
+ png_ptr->transformations |= PNG_FILLER;
+
+ if (filler_loc == PNG_FILLER_AFTER)
+ png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
+
+ else
+ png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER;
+}
+
+/* Added to libpng-1.2.7 */
+void PNGAPI
+png_set_add_alpha(png_structrp png_ptr, png_uint_32 filler, int filler_loc)
+{
+ png_debug(1, "in png_set_add_alpha");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_set_filler(png_ptr, filler, filler_loc);
+ /* The above may fail to do anything. */
+ if (png_ptr->transformations & PNG_FILLER)
+ png_ptr->transformations |= PNG_ADD_ALPHA;
+}
+
+#endif
+
+#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
+ defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
+void PNGAPI
+png_set_swap_alpha(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_swap_alpha");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= PNG_SWAP_ALPHA;
+}
+#endif
+
+#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
+ defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+void PNGAPI
+png_set_invert_alpha(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_invert_alpha");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= PNG_INVERT_ALPHA;
+}
+#endif
+
+#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
+void PNGAPI
+png_set_invert_mono(png_structrp png_ptr)
+{
+ png_debug(1, "in png_set_invert_mono");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= PNG_INVERT_MONO;
+}
+
+/* Invert monochrome grayscale data */
+void /* PRIVATE */
+png_do_invert(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_invert");
+
+ /* This test removed from libpng version 1.0.13 and 1.2.0:
+ * if (row_info->bit_depth == 1 &&
+ */
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ png_bytep rp = row;
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
+
+ for (i = 0; i < istop; i++)
+ {
+ *rp = (png_byte)(~(*rp));
+ rp++;
+ }
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
+ row_info->bit_depth == 8)
+ {
+ png_bytep rp = row;
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
+
+ for (i = 0; i < istop; i += 2)
+ {
+ *rp = (png_byte)(~(*rp));
+ rp += 2;
+ }
+ }
+
+#ifdef PNG_16BIT_SUPPORTED
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
+ row_info->bit_depth == 16)
+ {
+ png_bytep rp = row;
+ png_size_t i;
+ png_size_t istop = row_info->rowbytes;
+
+ for (i = 0; i < istop; i += 4)
+ {
+ *rp = (png_byte)(~(*rp));
+ *(rp + 1) = (png_byte)(~(*(rp + 1)));
+ rp += 4;
+ }
+ }
+#endif
+}
+#endif
+
+#ifdef PNG_16BIT_SUPPORTED
+#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
+/* Swaps byte order on 16 bit depth images */
+void /* PRIVATE */
+png_do_swap(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_swap");
+
+ if (row_info->bit_depth == 16)
+ {
+ png_bytep rp = row;
+ png_uint_32 i;
+ png_uint_32 istop= row_info->width * row_info->channels;
+
+ for (i = 0; i < istop; i++, rp += 2)
+ {
+ png_byte t = *rp;
+ *rp = *(rp + 1);
+ *(rp + 1) = t;
+ }
+ }
+}
+#endif
+#endif
+
+#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+static PNG_CONST png_byte onebppswaptable[256] = {
+ 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
+ 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
+ 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
+ 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
+ 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
+ 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
+ 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,
+ 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
+ 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,
+ 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
+ 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
+ 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
+ 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,
+ 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
+ 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,
+ 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
+ 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
+ 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
+ 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,
+ 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
+ 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,
+ 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
+ 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
+ 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
+ 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,
+ 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
+ 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,
+ 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
+ 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
+ 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
+ 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,
+ 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
+};
+
+static PNG_CONST png_byte twobppswaptable[256] = {
+ 0x00, 0x40, 0x80, 0xC0, 0x10, 0x50, 0x90, 0xD0,
+ 0x20, 0x60, 0xA0, 0xE0, 0x30, 0x70, 0xB0, 0xF0,
+ 0x04, 0x44, 0x84, 0xC4, 0x14, 0x54, 0x94, 0xD4,
+ 0x24, 0x64, 0xA4, 0xE4, 0x34, 0x74, 0xB4, 0xF4,
+ 0x08, 0x48, 0x88, 0xC8, 0x18, 0x58, 0x98, 0xD8,
+ 0x28, 0x68, 0xA8, 0xE8, 0x38, 0x78, 0xB8, 0xF8,
+ 0x0C, 0x4C, 0x8C, 0xCC, 0x1C, 0x5C, 0x9C, 0xDC,
+ 0x2C, 0x6C, 0xAC, 0xEC, 0x3C, 0x7C, 0xBC, 0xFC,
+ 0x01, 0x41, 0x81, 0xC1, 0x11, 0x51, 0x91, 0xD1,
+ 0x21, 0x61, 0xA1, 0xE1, 0x31, 0x71, 0xB1, 0xF1,
+ 0x05, 0x45, 0x85, 0xC5, 0x15, 0x55, 0x95, 0xD5,
+ 0x25, 0x65, 0xA5, 0xE5, 0x35, 0x75, 0xB5, 0xF5,
+ 0x09, 0x49, 0x89, 0xC9, 0x19, 0x59, 0x99, 0xD9,
+ 0x29, 0x69, 0xA9, 0xE9, 0x39, 0x79, 0xB9, 0xF9,
+ 0x0D, 0x4D, 0x8D, 0xCD, 0x1D, 0x5D, 0x9D, 0xDD,
+ 0x2D, 0x6D, 0xAD, 0xED, 0x3D, 0x7D, 0xBD, 0xFD,
+ 0x02, 0x42, 0x82, 0xC2, 0x12, 0x52, 0x92, 0xD2,
+ 0x22, 0x62, 0xA2, 0xE2, 0x32, 0x72, 0xB2, 0xF2,
+ 0x06, 0x46, 0x86, 0xC6, 0x16, 0x56, 0x96, 0xD6,
+ 0x26, 0x66, 0xA6, 0xE6, 0x36, 0x76, 0xB6, 0xF6,
+ 0x0A, 0x4A, 0x8A, 0xCA, 0x1A, 0x5A, 0x9A, 0xDA,
+ 0x2A, 0x6A, 0xAA, 0xEA, 0x3A, 0x7A, 0xBA, 0xFA,
+ 0x0E, 0x4E, 0x8E, 0xCE, 0x1E, 0x5E, 0x9E, 0xDE,
+ 0x2E, 0x6E, 0xAE, 0xEE, 0x3E, 0x7E, 0xBE, 0xFE,
+ 0x03, 0x43, 0x83, 0xC3, 0x13, 0x53, 0x93, 0xD3,
+ 0x23, 0x63, 0xA3, 0xE3, 0x33, 0x73, 0xB3, 0xF3,
+ 0x07, 0x47, 0x87, 0xC7, 0x17, 0x57, 0x97, 0xD7,
+ 0x27, 0x67, 0xA7, 0xE7, 0x37, 0x77, 0xB7, 0xF7,
+ 0x0B, 0x4B, 0x8B, 0xCB, 0x1B, 0x5B, 0x9B, 0xDB,
+ 0x2B, 0x6B, 0xAB, 0xEB, 0x3B, 0x7B, 0xBB, 0xFB,
+ 0x0F, 0x4F, 0x8F, 0xCF, 0x1F, 0x5F, 0x9F, 0xDF,
+ 0x2F, 0x6F, 0xAF, 0xEF, 0x3F, 0x7F, 0xBF, 0xFF
+};
+
+static PNG_CONST png_byte fourbppswaptable[256] = {
+ 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
+ 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0,
+ 0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71,
+ 0x81, 0x91, 0xA1, 0xB1, 0xC1, 0xD1, 0xE1, 0xF1,
+ 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72,
+ 0x82, 0x92, 0xA2, 0xB2, 0xC2, 0xD2, 0xE2, 0xF2,
+ 0x03, 0x13, 0x23, 0x33, 0x43, 0x53, 0x63, 0x73,
+ 0x83, 0x93, 0xA3, 0xB3, 0xC3, 0xD3, 0xE3, 0xF3,
+ 0x04, 0x14, 0x24, 0x34, 0x44, 0x54, 0x64, 0x74,
+ 0x84, 0x94, 0xA4, 0xB4, 0xC4, 0xD4, 0xE4, 0xF4,
+ 0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75,
+ 0x85, 0x95, 0xA5, 0xB5, 0xC5, 0xD5, 0xE5, 0xF5,
+ 0x06, 0x16, 0x26, 0x36, 0x46, 0x56, 0x66, 0x76,
+ 0x86, 0x96, 0xA6, 0xB6, 0xC6, 0xD6, 0xE6, 0xF6,
+ 0x07, 0x17, 0x27, 0x37, 0x47, 0x57, 0x67, 0x77,
+ 0x87, 0x97, 0xA7, 0xB7, 0xC7, 0xD7, 0xE7, 0xF7,
+ 0x08, 0x18, 0x28, 0x38, 0x48, 0x58, 0x68, 0x78,
+ 0x88, 0x98, 0xA8, 0xB8, 0xC8, 0xD8, 0xE8, 0xF8,
+ 0x09, 0x19, 0x29, 0x39, 0x49, 0x59, 0x69, 0x79,
+ 0x89, 0x99, 0xA9, 0xB9, 0xC9, 0xD9, 0xE9, 0xF9,
+ 0x0A, 0x1A, 0x2A, 0x3A, 0x4A, 0x5A, 0x6A, 0x7A,
+ 0x8A, 0x9A, 0xAA, 0xBA, 0xCA, 0xDA, 0xEA, 0xFA,
+ 0x0B, 0x1B, 0x2B, 0x3B, 0x4B, 0x5B, 0x6B, 0x7B,
+ 0x8B, 0x9B, 0xAB, 0xBB, 0xCB, 0xDB, 0xEB, 0xFB,
+ 0x0C, 0x1C, 0x2C, 0x3C, 0x4C, 0x5C, 0x6C, 0x7C,
+ 0x8C, 0x9C, 0xAC, 0xBC, 0xCC, 0xDC, 0xEC, 0xFC,
+ 0x0D, 0x1D, 0x2D, 0x3D, 0x4D, 0x5D, 0x6D, 0x7D,
+ 0x8D, 0x9D, 0xAD, 0xBD, 0xCD, 0xDD, 0xED, 0xFD,
+ 0x0E, 0x1E, 0x2E, 0x3E, 0x4E, 0x5E, 0x6E, 0x7E,
+ 0x8E, 0x9E, 0xAE, 0xBE, 0xCE, 0xDE, 0xEE, 0xFE,
+ 0x0F, 0x1F, 0x2F, 0x3F, 0x4F, 0x5F, 0x6F, 0x7F,
+ 0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF
+};
+
+/* Swaps pixel packing order within bytes */
+void /* PRIVATE */
+png_do_packswap(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_packswap");
+
+ if (row_info->bit_depth < 8)
+ {
+ png_bytep rp;
+ png_const_bytep end, table;
+
+ end = row + row_info->rowbytes;
+
+ if (row_info->bit_depth == 1)
+ table = onebppswaptable;
+
+ else if (row_info->bit_depth == 2)
+ table = twobppswaptable;
+
+ else if (row_info->bit_depth == 4)
+ table = fourbppswaptable;
+
+ else
+ return;
+
+ for (rp = row; rp < end; rp++)
+ *rp = table[*rp];
+ }
+}
+#endif /* PNG_READ_PACKSWAP_SUPPORTED or PNG_WRITE_PACKSWAP_SUPPORTED */
+
+#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
+ defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
+/* Remove a channel - this used to be 'png_do_strip_filler' but it used a
+ * somewhat weird combination of flags to determine what to do. All the calls
+ * to png_do_strip_filler are changed in 1.5.2 to call this instead with the
+ * correct arguments.
+ *
+ * The routine isn't general - the channel must be the channel at the start or
+ * end (not in the middle) of each pixel.
+ */
+void /* PRIVATE */
+png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
+{
+ png_bytep sp = row; /* source pointer */
+ png_bytep dp = row; /* destination pointer */
+ png_bytep ep = row + row_info->rowbytes; /* One beyond end of row */
+
+ /* At the start sp will point to the first byte to copy and dp to where
+ * it is copied to. ep always points just beyond the end of the row, so
+ * the loop simply copies (channels-1) channels until sp reaches ep.
+ *
+ * at_start: 0 -- convert AG, XG, ARGB, XRGB, AAGG, XXGG, etc.
+ * nonzero -- convert GA, GX, RGBA, RGBX, GGAA, RRGGBBXX, etc.
+ */
+
+ /* GA, GX, XG cases */
+ if (row_info->channels == 2)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ if (at_start) /* Skip initial filler */
+ ++sp;
+ else /* Skip initial channel and, for sp, the filler */
+ sp += 2, ++dp;
+
+ /* For a 1 pixel wide image there is nothing to do */
+ while (sp < ep)
+ *dp++ = *sp, sp += 2;
+
+ row_info->pixel_depth = 8;
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ if (at_start) /* Skip initial filler */
+ sp += 2;
+ else /* Skip initial channel and, for sp, the filler */
+ sp += 4, dp += 2;
+
+ while (sp < ep)
+ *dp++ = *sp++, *dp++ = *sp, sp += 3;
+
+ row_info->pixel_depth = 16;
+ }
+
+ else
+ return; /* bad bit depth */
+
+ row_info->channels = 1;
+
+ /* Finally fix the color type if it records an alpha channel */
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ row_info->color_type = PNG_COLOR_TYPE_GRAY;
+ }
+
+ /* RGBA, RGBX, XRGB cases */
+ else if (row_info->channels == 4)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ if (at_start) /* Skip initial filler */
+ ++sp;
+ else /* Skip initial channels and, for sp, the filler */
+ sp += 4, dp += 3;
+
+ /* Note that the loop adds 3 to dp and 4 to sp each time. */
+ while (sp < ep)
+ *dp++ = *sp++, *dp++ = *sp++, *dp++ = *sp, sp += 2;
+
+ row_info->pixel_depth = 24;
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ if (at_start) /* Skip initial filler */
+ sp += 2;
+ else /* Skip initial channels and, for sp, the filler */
+ sp += 8, dp += 6;
+
+ while (sp < ep)
+ {
+ /* Copy 6 bytes, skip 2 */
+ *dp++ = *sp++, *dp++ = *sp++;
+ *dp++ = *sp++, *dp++ = *sp++;
+ *dp++ = *sp++, *dp++ = *sp, sp += 3;
+ }
+
+ row_info->pixel_depth = 48;
+ }
+
+ else
+ return; /* bad bit depth */
+
+ row_info->channels = 3;
+
+ /* Finally fix the color type if it records an alpha channel */
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ row_info->color_type = PNG_COLOR_TYPE_RGB;
+ }
+
+ else
+ return; /* The filler channel has gone already */
+
+ /* Fix the rowbytes value. */
+ row_info->rowbytes = dp-row;
+}
+#endif
+
+#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
+/* Swaps red and blue bytes within a pixel */
+void /* PRIVATE */
+png_do_bgr(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_bgr");
+
+ if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ png_uint_32 row_width = row_info->width;
+ if (row_info->bit_depth == 8)
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += 3)
+ {
+ png_byte save = *rp;
+ *rp = *(rp + 2);
+ *(rp + 2) = save;
+ }
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += 4)
+ {
+ png_byte save = *rp;
+ *rp = *(rp + 2);
+ *(rp + 2) = save;
+ }
+ }
+ }
+
+#ifdef PNG_16BIT_SUPPORTED
+ else if (row_info->bit_depth == 16)
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += 6)
+ {
+ png_byte save = *rp;
+ *rp = *(rp + 4);
+ *(rp + 4) = save;
+ save = *(rp + 1);
+ *(rp + 1) = *(rp + 5);
+ *(rp + 5) = save;
+ }
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += 8)
+ {
+ png_byte save = *rp;
+ *rp = *(rp + 4);
+ *(rp + 4) = save;
+ save = *(rp + 1);
+ *(rp + 1) = *(rp + 5);
+ *(rp + 5) = save;
+ }
+ }
+ }
+#endif
+ }
+}
+#endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
+
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+ defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+/* Added at libpng-1.5.10 */
+void /* PRIVATE */
+png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info)
+{
+ if (png_ptr->num_palette < (1 << row_info->bit_depth) &&
+ png_ptr->num_palette > 0) /* num_palette can be 0 in MNG files */
+ {
+ /* Calculations moved outside switch in an attempt to stop different
+ * compiler warnings. 'padding' is in *bits* within the last byte, it is
+ * an 'int' because pixel_depth becomes an 'int' in the expression below,
+ * and this calculation is used because it avoids warnings that other
+ * forms produced on either GCC or MSVC.
+ */
+ int padding = (-row_info->pixel_depth * row_info->width) & 7;
+ png_bytep rp = png_ptr->row_buf + row_info->rowbytes;
+
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ /* in this case, all bytes must be 0 so we don't need
+ * to unpack the pixels except for the rightmost one.
+ */
+ for (; rp > png_ptr->row_buf; rp--)
+ {
+ if (*rp >> padding != 0)
+ png_ptr->num_palette_max = 1;
+ padding = 0;
+ }
+
+ break;
+ }
+
+ case 2:
+ {
+ for (; rp > png_ptr->row_buf; rp--)
+ {
+ int i = ((*rp >> padding) & 0x03);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ i = (((*rp >> padding) >> 2) & 0x03);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ i = (((*rp >> padding) >> 4) & 0x03);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ i = (((*rp >> padding) >> 6) & 0x03);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ padding = 0;
+ }
+
+ break;
+ }
+
+ case 4:
+ {
+ for (; rp > png_ptr->row_buf; rp--)
+ {
+ int i = ((*rp >> padding) & 0x0f);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ i = (((*rp >> padding) >> 4) & 0x0f);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ padding = 0;
+ }
+
+ break;
+ }
+
+ case 8:
+ {
+ for (; rp > png_ptr->row_buf; rp--)
+ {
+ if (*rp > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = (int) *rp;
+ }
+
+ break;
+ }
+
+ default:
+ break;
+ }
+ }
+}
+#endif /* PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED */
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+void PNGAPI
+png_set_user_transform_info(png_structrp png_ptr, png_voidp
+ user_transform_ptr, int user_transform_depth, int user_transform_channels)
+{
+ png_debug(1, "in png_set_user_transform_info");
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
+ (png_ptr->flags & PNG_FLAG_ROW_INIT) != 0)
+ {
+ png_app_error(png_ptr,
+ "info change after png_start_read_image or png_read_update_info");
+ return;
+ }
+#endif
+
+ png_ptr->user_transform_ptr = user_transform_ptr;
+ png_ptr->user_transform_depth = (png_byte)user_transform_depth;
+ png_ptr->user_transform_channels = (png_byte)user_transform_channels;
+}
+#endif
+
+/* This function returns a pointer to the user_transform_ptr associated with
+ * the user transform functions. The application should free any memory
+ * associated with this pointer before png_write_destroy and png_read_destroy
+ * are called.
+ */
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+png_voidp PNGAPI
+png_get_user_transform_ptr(png_const_structrp png_ptr)
+{
+ if (png_ptr == NULL)
+ return (NULL);
+
+ return png_ptr->user_transform_ptr;
+}
+#endif
+
+#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED
+png_uint_32 PNGAPI
+png_get_current_row_number(png_const_structrp png_ptr)
+{
+ /* See the comments in png.h - this is the sub-image row when reading and
+ * interlaced image.
+ */
+ if (png_ptr != NULL)
+ return png_ptr->row_number;
+
+ return PNG_UINT_32_MAX; /* help the app not to fail silently */
+}
+
+png_byte PNGAPI
+png_get_current_pass_number(png_const_structrp png_ptr)
+{
+ if (png_ptr != NULL)
+ return png_ptr->pass;
+ return 8; /* invalid */
+}
+#endif /* PNG_USER_TRANSFORM_INFO_SUPPORTED */
+#endif /* PNG_READ_USER_TRANSFORM_SUPPORTED ||
+ PNG_WRITE_USER_TRANSFORM_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+#endif
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwio.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwio.c
new file mode 100644
index 0000000..5f3133e
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwio.c
@@ -0,0 +1,165 @@
+
+/* pngwio.c - functions for data output
+ *
+ * Last changed in libpng 1.6.0 [February 14, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all output. Users who need
+ * special handling are expected to write functions that have the same
+ * arguments as these and perform similar functions, but that possibly
+ * use different output methods. Note that you shouldn't change these
+ * functions, but rather write replacement functions and then change
+ * them at run time with png_set_write_fn(...).
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "pngpriv.h"
+
+#ifdef PNG_WRITE_SUPPORTED
+
+/* Write the data to whatever output you are using. The default routine
+ * writes to a file pointer. Note that this routine sometimes gets called
+ * with very small lengths, so you should implement some kind of simple
+ * buffering if you are using unbuffered writes. This should never be asked
+ * to write more than 64K on a 16 bit machine.
+ */
+
+void /* PRIVATE */
+png_write_data(png_structrp png_ptr, png_const_bytep data, png_size_t length)
+{
+ /* NOTE: write_data_fn must not change the buffer! */
+ if (png_ptr->write_data_fn != NULL )
+ (*(png_ptr->write_data_fn))(png_ptr, png_constcast(png_bytep,data),
+ length);
+
+ else
+ png_error(png_ptr, "Call to NULL write function");
+}
+
+#ifdef PNG_STDIO_SUPPORTED
+/* This is the function that does the actual writing of data. If you are
+ * not writing to a standard C stream, you should create a replacement
+ * write_data function and use it at run time with png_set_write_fn(), rather
+ * than changing the library.
+ */
+void PNGCBAPI
+png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_size_t check;
+
+ if (png_ptr == NULL)
+ return;
+
+ check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr));
+
+ if (check != length)
+ png_error(png_ptr, "Write Error");
+}
+#endif
+
+/* This function is called to output any data pending writing (normally
+ * to disk). After png_flush is called, there should be no data pending
+ * writing in any buffers.
+ */
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+void /* PRIVATE */
+png_flush(png_structrp png_ptr)
+{
+ if (png_ptr->output_flush_fn != NULL)
+ (*(png_ptr->output_flush_fn))(png_ptr);
+}
+
+# ifdef PNG_STDIO_SUPPORTED
+void PNGCBAPI
+png_default_flush(png_structp png_ptr)
+{
+ png_FILE_p io_ptr;
+
+ if (png_ptr == NULL)
+ return;
+
+ io_ptr = png_voidcast(png_FILE_p, (png_ptr->io_ptr));
+ fflush(io_ptr);
+}
+# endif
+#endif
+
+/* This function allows the application to supply new output functions for
+ * libpng if standard C streams aren't being used.
+ *
+ * This function takes as its arguments:
+ * png_ptr - pointer to a png output data structure
+ * io_ptr - pointer to user supplied structure containing info about
+ * the output functions. May be NULL.
+ * write_data_fn - pointer to a new output function that takes as its
+ * arguments a pointer to a png_struct, a pointer to
+ * data to be written, and a 32-bit unsigned int that is
+ * the number of bytes to be written. The new write
+ * function should call png_error(png_ptr, "Error msg")
+ * to exit and output any fatal error messages. May be
+ * NULL, in which case libpng's default function will
+ * be used.
+ * flush_data_fn - pointer to a new flush function that takes as its
+ * arguments a pointer to a png_struct. After a call to
+ * the flush function, there should be no data in any buffers
+ * or pending transmission. If the output method doesn't do
+ * any buffering of output, a function prototype must still be
+ * supplied although it doesn't have to do anything. If
+ * PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
+ * time, output_flush_fn will be ignored, although it must be
+ * supplied for compatibility. May be NULL, in which case
+ * libpng's default function will be used, if
+ * PNG_WRITE_FLUSH_SUPPORTED is defined. This is not
+ * a good idea if io_ptr does not point to a standard
+ * *FILE structure.
+ */
+void PNGAPI
+png_set_write_fn(png_structrp png_ptr, png_voidp io_ptr,
+ png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->io_ptr = io_ptr;
+
+#ifdef PNG_STDIO_SUPPORTED
+ if (write_data_fn != NULL)
+ png_ptr->write_data_fn = write_data_fn;
+
+ else
+ png_ptr->write_data_fn = png_default_write_data;
+#else
+ png_ptr->write_data_fn = write_data_fn;
+#endif
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+# ifdef PNG_STDIO_SUPPORTED
+
+ if (output_flush_fn != NULL)
+ png_ptr->output_flush_fn = output_flush_fn;
+
+ else
+ png_ptr->output_flush_fn = png_default_flush;
+
+# else
+ png_ptr->output_flush_fn = output_flush_fn;
+# endif
+#endif /* PNG_WRITE_FLUSH_SUPPORTED */
+
+ /* It is an error to read while writing a png file */
+ if (png_ptr->read_data_fn != NULL)
+ {
+ png_ptr->read_data_fn = NULL;
+
+ png_warning(png_ptr,
+ "Can't set both read_data_fn and write_data_fn in the"
+ " same structure");
+ }
+}
+#endif /* PNG_WRITE_SUPPORTED */
+#endif//_FPDFAPI_MINI_
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwrite.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwrite.c
new file mode 100644
index 0000000..7efcfc3
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwrite.c
@@ -0,0 +1,2331 @@
+
+/* pngwrite.c - general routines to write a PNG file
+ *
+ * Last changed in libpng 1.6.2 [April 25, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "pngpriv.h"
+#if defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
+# include <errno.h>
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED
+
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+/* Write out all the unknown chunks for the current given location */
+static void
+write_unknown_chunks(png_structrp png_ptr, png_const_inforp info_ptr,
+ unsigned int where)
+{
+ if (info_ptr->unknown_chunks_num)
+ {
+ png_const_unknown_chunkp up;
+
+ png_debug(5, "writing extra chunks");
+
+ for (up = info_ptr->unknown_chunks;
+ up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
+ ++up)
+ if (up->location & where)
+ {
+ /* If per-chunk unknown chunk handling is enabled use it, otherwise
+ * just write the chunks the application has set.
+ */
+#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+ int keep = png_handle_as_unknown(png_ptr, up->name);
+
+ /* NOTE: this code is radically different from the read side in the
+ * matter of handling an ancillary unknown chunk. In the read side
+ * the default behavior is to discard it, in the code below the default
+ * behavior is to write it. Critical chunks are, however, only
+ * written if explicitly listed or if the default is set to write all
+ * unknown chunks.
+ *
+ * The default handling is also slightly weird - it is not possible to
+ * stop the writing of all unsafe-to-copy chunks!
+ *
+ * TODO: REVIEW: this would seem to be a bug.
+ */
+ if (keep != PNG_HANDLE_CHUNK_NEVER &&
+ ((up->name[3] & 0x20) /* safe-to-copy overrides everything */ ||
+ keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (keep == PNG_HANDLE_CHUNK_AS_DEFAULT &&
+ png_ptr->unknown_default == PNG_HANDLE_CHUNK_ALWAYS)))
+#endif
+ {
+ /* TODO: review, what is wrong with a zero length unknown chunk? */
+ if (up->size == 0)
+ png_warning(png_ptr, "Writing zero-length unknown chunk");
+
+ png_write_chunk(png_ptr, up->name, up->data, up->size);
+ }
+ }
+ }
+}
+#endif /* PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED */
+
+/* Writes all the PNG information. This is the suggested way to use the
+ * library. If you have a new chunk to add, make a function to write it,
+ * and put it in the correct location here. If you want the chunk written
+ * after the image data, put it in png_write_end(). I strongly encourage
+ * you to supply a PNG_INFO_ flag, and check info_ptr->valid before writing
+ * the chunk, as that will keep the code from breaking if you want to just
+ * write a plain PNG file. If you have long comments, I suggest writing
+ * them in png_write_end(), and compressing them.
+ */
+void PNGAPI
+png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr)
+{
+ png_debug(1, "in png_write_info_before_PLTE");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
+ {
+ /* Write PNG signature */
+ png_write_sig(png_ptr);
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) && \
+ (png_ptr->mng_features_permitted))
+ {
+ png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
+ png_ptr->mng_features_permitted = 0;
+ }
+#endif
+
+ /* Write IHDR information. */
+ png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height,
+ info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
+ info_ptr->filter_type,
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ info_ptr->interlace_type
+#else
+ 0
+#endif
+ );
+
+ /* The rest of these check to see if the valid field has the appropriate
+ * flag set, and if it does, writes the chunk.
+ *
+ * 1.6.0: COLORSPACE support controls the writing of these chunks too, and
+ * the chunks will be written if the WRITE routine is there and information
+ * is available in the COLORSPACE. (See png_colorspace_sync_info in png.c
+ * for where the valid flags get set.)
+ *
+ * Under certain circumstances the colorspace can be invalidated without
+ * syncing the info_struct 'valid' flags; this happens if libpng detects and
+ * error and calls png_error while the color space is being set, yet the
+ * application continues writing the PNG. So check the 'invalid' flag here
+ * too.
+ */
+#ifdef PNG_GAMMA_SUPPORTED
+# ifdef PNG_WRITE_gAMA_SUPPORTED
+ if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_gAMA) &&
+ (info_ptr->valid & PNG_INFO_gAMA))
+ png_write_gAMA_fixed(png_ptr, info_ptr->colorspace.gamma);
+# endif
+#endif
+
+#ifdef PNG_COLORSPACE_SUPPORTED
+ /* Write only one of sRGB or an ICC profile. If a profile was supplied
+ * and it matches one of the known sRGB ones issue a warning.
+ */
+# ifdef PNG_WRITE_iCCP_SUPPORTED
+ if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
+ (info_ptr->valid & PNG_INFO_iCCP))
+ {
+# ifdef PNG_WRITE_sRGB_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sRGB)
+ png_app_warning(png_ptr,
+ "profile matches sRGB but writing iCCP instead");
+# endif
+
+ png_write_iCCP(png_ptr, info_ptr->iccp_name,
+ info_ptr->iccp_profile);
+ }
+# ifdef PNG_WRITE_sRGB_SUPPORTED
+ else
+# endif
+# endif
+
+# ifdef PNG_WRITE_sRGB_SUPPORTED
+ if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
+ (info_ptr->valid & PNG_INFO_sRGB))
+ png_write_sRGB(png_ptr, info_ptr->colorspace.rendering_intent);
+# endif /* WRITE_sRGB */
+#endif /* COLORSPACE */
+
+#ifdef PNG_WRITE_sBIT_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sBIT)
+ png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type);
+#endif
+
+#ifdef PNG_COLORSPACE_SUPPORTED
+# ifdef PNG_WRITE_cHRM_SUPPORTED
+ if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) &&
+ (info_ptr->valid & PNG_INFO_cHRM))
+ png_write_cHRM_fixed(png_ptr, &info_ptr->colorspace.end_points_xy);
+# endif
+#endif
+
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ write_unknown_chunks(png_ptr, info_ptr, PNG_HAVE_IHDR);
+#endif
+
+ png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE;
+ }
+}
+
+void PNGAPI
+png_write_info(png_structrp png_ptr, png_const_inforp info_ptr)
+{
+#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
+ int i;
+#endif
+
+ png_debug(1, "in png_write_info");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ png_write_info_before_PLTE(png_ptr, info_ptr);
+
+ if (info_ptr->valid & PNG_INFO_PLTE)
+ png_write_PLTE(png_ptr, info_ptr->palette,
+ (png_uint_32)info_ptr->num_palette);
+
+ else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ png_error(png_ptr, "Valid palette required for paletted images");
+
+#ifdef PNG_WRITE_tRNS_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_tRNS)
+ {
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+ /* Invert the alpha channel (in tRNS) */
+ if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
+ info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ int j;
+ for (j = 0; j<(int)info_ptr->num_trans; j++)
+ info_ptr->trans_alpha[j] =
+ (png_byte)(255 - info_ptr->trans_alpha[j]);
+ }
+#endif
+ png_write_tRNS(png_ptr, info_ptr->trans_alpha, &(info_ptr->trans_color),
+ info_ptr->num_trans, info_ptr->color_type);
+ }
+#endif
+#ifdef PNG_WRITE_bKGD_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_bKGD)
+ png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
+#endif
+
+#ifdef PNG_WRITE_hIST_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_hIST)
+ png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
+#endif
+
+#ifdef PNG_WRITE_oFFs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_oFFs)
+ png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset,
+ info_ptr->offset_unit_type);
+#endif
+
+#ifdef PNG_WRITE_pCAL_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_pCAL)
+ png_write_pCAL(png_ptr, info_ptr->pcal_purpose, info_ptr->pcal_X0,
+ info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
+ info_ptr->pcal_units, info_ptr->pcal_params);
+#endif
+
+#ifdef PNG_WRITE_sCAL_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sCAL)
+ png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit,
+ info_ptr->scal_s_width, info_ptr->scal_s_height);
+#endif /* sCAL */
+
+#ifdef PNG_WRITE_pHYs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_pHYs)
+ png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit,
+ info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type);
+#endif /* pHYs */
+
+#ifdef PNG_WRITE_tIME_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_tIME)
+ {
+ png_write_tIME(png_ptr, &(info_ptr->mod_time));
+ png_ptr->mode |= PNG_WROTE_tIME;
+ }
+#endif /* tIME */
+
+#ifdef PNG_WRITE_sPLT_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sPLT)
+ for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
+ png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
+#endif /* sPLT */
+
+#ifdef PNG_WRITE_TEXT_SUPPORTED
+ /* Check to see if we need to write text chunks */
+ for (i = 0; i < info_ptr->num_text; i++)
+ {
+ png_debug2(2, "Writing header text chunk %d, type %d", i,
+ info_ptr->text[i].compression);
+ /* An internationalized chunk? */
+ if (info_ptr->text[i].compression > 0)
+ {
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+ /* Write international chunk */
+ png_write_iTXt(png_ptr,
+ info_ptr->text[i].compression,
+ info_ptr->text[i].key,
+ info_ptr->text[i].lang,
+ info_ptr->text[i].lang_key,
+ info_ptr->text[i].text);
+#else
+ png_warning(png_ptr, "Unable to write international text");
+#endif
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+ }
+
+ /* If we want a compressed text chunk */
+ else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
+ {
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+ /* Write compressed chunk */
+ png_write_zTXt(png_ptr, info_ptr->text[i].key,
+ info_ptr->text[i].text, 0,
+ info_ptr->text[i].compression);
+#else
+ png_warning(png_ptr, "Unable to write compressed text");
+#endif
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
+ }
+
+ else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
+ {
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+ /* Write uncompressed chunk */
+ png_write_tEXt(png_ptr, info_ptr->text[i].key,
+ info_ptr->text[i].text,
+ 0);
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+#else
+ /* Can't get here */
+ png_warning(png_ptr, "Unable to write uncompressed text");
+#endif
+ }
+ }
+#endif /* tEXt */
+
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ write_unknown_chunks(png_ptr, info_ptr, PNG_HAVE_PLTE);
+#endif
+}
+
+/* Writes the end of the PNG file. If you don't want to write comments or
+ * time information, you can pass NULL for info. If you already wrote these
+ * in png_write_info(), do not write them again here. If you have long
+ * comments, I suggest writing them here, and compressing them.
+ */
+void PNGAPI
+png_write_end(png_structrp png_ptr, png_inforp info_ptr)
+{
+ png_debug(1, "in png_write_end");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (!(png_ptr->mode & PNG_HAVE_IDAT))
+ png_error(png_ptr, "No IDATs written into file");
+
+#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ if (png_ptr->num_palette_max > png_ptr->num_palette)
+ png_benign_error(png_ptr, "Wrote palette index exceeding num_palette");
+#endif
+
+ /* See if user wants us to write information chunks */
+ if (info_ptr != NULL)
+ {
+#ifdef PNG_WRITE_TEXT_SUPPORTED
+ int i; /* local index variable */
+#endif
+#ifdef PNG_WRITE_tIME_SUPPORTED
+ /* Check to see if user has supplied a time chunk */
+ if ((info_ptr->valid & PNG_INFO_tIME) &&
+ !(png_ptr->mode & PNG_WROTE_tIME))
+ png_write_tIME(png_ptr, &(info_ptr->mod_time));
+
+#endif
+#ifdef PNG_WRITE_TEXT_SUPPORTED
+ /* Loop through comment chunks */
+ for (i = 0; i < info_ptr->num_text; i++)
+ {
+ png_debug2(2, "Writing trailer text chunk %d, type %d", i,
+ info_ptr->text[i].compression);
+ /* An internationalized chunk? */
+ if (info_ptr->text[i].compression > 0)
+ {
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+ /* Write international chunk */
+ png_write_iTXt(png_ptr,
+ info_ptr->text[i].compression,
+ info_ptr->text[i].key,
+ info_ptr->text[i].lang,
+ info_ptr->text[i].lang_key,
+ info_ptr->text[i].text);
+#else
+ png_warning(png_ptr, "Unable to write international text");
+#endif
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+ }
+
+ else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt)
+ {
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+ /* Write compressed chunk */
+ png_write_zTXt(png_ptr, info_ptr->text[i].key,
+ info_ptr->text[i].text, 0,
+ info_ptr->text[i].compression);
+#else
+ png_warning(png_ptr, "Unable to write compressed text");
+#endif
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
+ }
+
+ else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
+ {
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+ /* Write uncompressed chunk */
+ png_write_tEXt(png_ptr, info_ptr->text[i].key,
+ info_ptr->text[i].text, 0);
+#else
+ png_warning(png_ptr, "Unable to write uncompressed text");
+#endif
+
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+ }
+ }
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ write_unknown_chunks(png_ptr, info_ptr, PNG_AFTER_IDAT);
+#endif
+ }
+
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+ /* Write end of PNG file */
+ png_write_IEND(png_ptr);
+ /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03,
+ * and restored again in libpng-1.2.30, may cause some applications that
+ * do not set png_ptr->output_flush_fn to crash. If your application
+ * experiences a problem, please try building libpng with
+ * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to
+ * png-mng-implement at lists.sf.net .
+ */
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+# ifdef PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED
+ png_flush(png_ptr);
+# endif
+#endif
+}
+
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+void PNGAPI
+png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm * ttime)
+{
+ png_debug(1, "in png_convert_from_struct_tm");
+
+ ptime->year = (png_uint_16)(1900 + ttime->tm_year);
+ ptime->month = (png_byte)(ttime->tm_mon + 1);
+ ptime->day = (png_byte)ttime->tm_mday;
+ ptime->hour = (png_byte)ttime->tm_hour;
+ ptime->minute = (png_byte)ttime->tm_min;
+ ptime->second = (png_byte)ttime->tm_sec;
+}
+
+void PNGAPI
+png_convert_from_time_t(png_timep ptime, time_t ttime)
+{
+ struct tm *tbuf;
+
+ png_debug(1, "in png_convert_from_time_t");
+
+ tbuf = gmtime(&ttime);
+ png_convert_from_struct_tm(ptime, tbuf);
+}
+#endif
+
+/* Initialize png_ptr structure, and allocate any memory needed */
+PNG_FUNCTION(png_structp,PNGAPI
+png_create_write_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED)
+{
+#ifndef PNG_USER_MEM_SUPPORTED
+ png_structrp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
+ error_fn, warn_fn, NULL, NULL, NULL);
+#else
+ return png_create_write_struct_2(user_png_ver, error_ptr, error_fn,
+ warn_fn, NULL, NULL, NULL);
+}
+
+/* Alternate initialize png_ptr structure, and allocate any memory needed */
+PNG_FUNCTION(png_structp,PNGAPI
+png_create_write_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
+{
+ png_structrp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
+ error_fn, warn_fn, mem_ptr, malloc_fn, free_fn);
+#endif /* PNG_USER_MEM_SUPPORTED */
+ if (png_ptr != NULL)
+ {
+ /* Set the zlib control values to defaults; they can be overridden by the
+ * application after the struct has been created.
+ */
+ png_ptr->zbuffer_size = PNG_ZBUF_SIZE;
+
+ /* The 'zlib_strategy' setting is irrelevant because png_default_claim in
+ * pngwutil.c defaults it according to whether or not filters will be
+ * used, and ignores this setting.
+ */
+ png_ptr->zlib_strategy = PNG_Z_DEFAULT_STRATEGY;
+ png_ptr->zlib_level = PNG_Z_DEFAULT_COMPRESSION;
+ png_ptr->zlib_mem_level = 8;
+ png_ptr->zlib_window_bits = 15;
+ png_ptr->zlib_method = 8;
+
+#ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
+ png_ptr->zlib_text_strategy = PNG_TEXT_Z_DEFAULT_STRATEGY;
+ png_ptr->zlib_text_level = PNG_TEXT_Z_DEFAULT_COMPRESSION;
+ png_ptr->zlib_text_mem_level = 8;
+ png_ptr->zlib_text_window_bits = 15;
+ png_ptr->zlib_text_method = 8;
+#endif /* PNG_WRITE_COMPRESSED_TEXT_SUPPORTED */
+
+ /* This is a highly dubious configuration option; by default it is off,
+ * but it may be appropriate for private builds that are testing
+ * extensions not conformant to the current specification, or of
+ * applications that must not fail to write at all costs!
+ */
+#ifdef PNG_BENIGN_WRITE_ERRORS_SUPPORTED
+ png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
+ /* In stable builds only warn if an application error can be completely
+ * handled.
+ */
+#endif
+
+ /* App warnings are warnings in release (or release candidate) builds but
+ * are errors during development.
+ */
+#if PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC
+ png_ptr->flags |= PNG_FLAG_APP_WARNINGS_WARN;
+#endif
+
+ /* TODO: delay this, it can be done in png_init_io() (if the app doesn't
+ * do it itself) avoiding setting the default function if it is not
+ * required.
+ */
+ png_set_write_fn(png_ptr, NULL, NULL, NULL);
+ }
+
+ return png_ptr;
+}
+
+
+/* Write a few rows of image data. If the image is interlaced,
+ * either you will have to write the 7 sub images, or, if you
+ * have called png_set_interlace_handling(), you will have to
+ * "write" the image seven times.
+ */
+void PNGAPI
+png_write_rows(png_structrp png_ptr, png_bytepp row,
+ png_uint_32 num_rows)
+{
+ png_uint_32 i; /* row counter */
+ png_bytepp rp; /* row pointer */
+
+ png_debug(1, "in png_write_rows");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* Loop through the rows */
+ for (i = 0, rp = row; i < num_rows; i++, rp++)
+ {
+ png_write_row(png_ptr, *rp);
+ }
+}
+
+/* Write the image. You only need to call this function once, even
+ * if you are writing an interlaced image.
+ */
+void PNGAPI
+png_write_image(png_structrp png_ptr, png_bytepp image)
+{
+ png_uint_32 i; /* row index */
+ int pass, num_pass; /* pass variables */
+ png_bytepp rp; /* points to current row */
+
+ if (png_ptr == NULL)
+ return;
+
+ png_debug(1, "in png_write_image");
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* Initialize interlace handling. If image is not interlaced,
+ * this will set pass to 1
+ */
+ num_pass = png_set_interlace_handling(png_ptr);
+#else
+ num_pass = 1;
+#endif
+ /* Loop through passes */
+ for (pass = 0; pass < num_pass; pass++)
+ {
+ /* Loop through image */
+ for (i = 0, rp = image; i < png_ptr->height; i++, rp++)
+ {
+ png_write_row(png_ptr, *rp);
+ }
+ }
+}
+
+/* Called by user to write a row of image data */
+void PNGAPI
+png_write_row(png_structrp png_ptr, png_const_bytep row)
+{
+ /* 1.5.6: moved from png_struct to be a local structure: */
+ png_row_info row_info;
+
+ if (png_ptr == NULL)
+ return;
+
+ png_debug2(1, "in png_write_row (row %u, pass %d)",
+ png_ptr->row_number, png_ptr->pass);
+
+ /* Initialize transformations and other stuff if first time */
+ if (png_ptr->row_number == 0 && png_ptr->pass == 0)
+ {
+ /* Make sure we wrote the header info */
+ if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
+ png_error(png_ptr,
+ "png_write_info was never called before png_write_row");
+
+ /* Check for transforms that have been set but were defined out */
+#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
+ if (png_ptr->transformations & PNG_INVERT_MONO)
+ png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined");
+#endif
+
+#if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED)
+ if (png_ptr->transformations & PNG_FILLER)
+ png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined");
+#endif
+#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \
+ defined(PNG_READ_PACKSWAP_SUPPORTED)
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ png_warning(png_ptr,
+ "PNG_WRITE_PACKSWAP_SUPPORTED is not defined");
+#endif
+
+#if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED)
+ if (png_ptr->transformations & PNG_PACK)
+ png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined");
+#endif
+
+#if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED)
+ if (png_ptr->transformations & PNG_SHIFT)
+ png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined");
+#endif
+
+#if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED)
+ if (png_ptr->transformations & PNG_BGR)
+ png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined");
+#endif
+
+#if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED)
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined");
+#endif
+
+ png_write_start_row(png_ptr);
+ }
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* If interlaced and not interested in row, return */
+ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
+ {
+ switch (png_ptr->pass)
+ {
+ case 0:
+ if (png_ptr->row_number & 0x07)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 1:
+ if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 2:
+ if ((png_ptr->row_number & 0x07) != 4)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 3:
+ if ((png_ptr->row_number & 0x03) || png_ptr->width < 3)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 4:
+ if ((png_ptr->row_number & 0x03) != 2)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 5:
+ if ((png_ptr->row_number & 0x01) || png_ptr->width < 2)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ case 6:
+ if (!(png_ptr->row_number & 0x01))
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+
+ default: /* error: ignore it */
+ break;
+ }
+ }
+#endif
+
+ /* Set up row info for transformations */
+ row_info.color_type = png_ptr->color_type;
+ row_info.width = png_ptr->usr_width;
+ row_info.channels = png_ptr->usr_channels;
+ row_info.bit_depth = png_ptr->usr_bit_depth;
+ row_info.pixel_depth = (png_byte)(row_info.bit_depth * row_info.channels);
+ row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
+
+ png_debug1(3, "row_info->color_type = %d", row_info.color_type);
+ png_debug1(3, "row_info->width = %u", row_info.width);
+ png_debug1(3, "row_info->channels = %d", row_info.channels);
+ png_debug1(3, "row_info->bit_depth = %d", row_info.bit_depth);
+ png_debug1(3, "row_info->pixel_depth = %d", row_info.pixel_depth);
+ png_debug1(3, "row_info->rowbytes = %lu", (unsigned long)row_info.rowbytes);
+
+ /* Copy user's row into buffer, leaving room for filter byte. */
+ memcpy(png_ptr->row_buf + 1, row, row_info.rowbytes);
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* Handle interlacing */
+ if (png_ptr->interlaced && png_ptr->pass < 6 &&
+ (png_ptr->transformations & PNG_INTERLACE))
+ {
+ png_do_write_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass);
+ /* This should always get caught above, but still ... */
+ if (!(row_info.width))
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ }
+#endif
+
+#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
+ /* Handle other transformations */
+ if (png_ptr->transformations)
+ png_do_write_transformations(png_ptr, &row_info);
+#endif
+
+ /* At this point the row_info pixel depth must match the 'transformed' depth,
+ * which is also the output depth.
+ */
+ if (row_info.pixel_depth != png_ptr->pixel_depth ||
+ row_info.pixel_depth != png_ptr->transformed_pixel_depth)
+ png_error(png_ptr, "internal write transform logic error");
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ /* Write filter_method 64 (intrapixel differencing) only if
+ * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
+ * 2. Libpng did not write a PNG signature (this filter_method is only
+ * used in PNG datastreams that are embedded in MNG datastreams) and
+ * 3. The application called png_permit_mng_features with a mask that
+ * included PNG_FLAG_MNG_FILTER_64 and
+ * 4. The filter_method is 64 and
+ * 5. The color_type is RGB or RGBA
+ */
+ if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
+ {
+ /* Intrapixel differencing */
+ png_do_write_intrapixel(&row_info, png_ptr->row_buf + 1);
+ }
+#endif
+
+/* Added at libpng-1.5.10 */
+#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ /* Check for out-of-range palette index */
+ if (row_info.color_type == PNG_COLOR_TYPE_PALETTE &&
+ png_ptr->num_palette_max >= 0)
+ png_do_check_palette_indexes(png_ptr, &row_info);
+#endif
+
+ /* Find a filter if necessary, filter the row and write it out. */
+ png_write_find_filter(png_ptr, &row_info);
+
+ if (png_ptr->write_row_fn != NULL)
+ (*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
+}
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+/* Set the automatic flush interval or 0 to turn flushing off */
+void PNGAPI
+png_set_flush(png_structrp png_ptr, int nrows)
+{
+ png_debug(1, "in png_set_flush");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
+}
+
+/* Flush the current output buffers now */
+void PNGAPI
+png_write_flush(png_structrp png_ptr)
+{
+ png_debug(1, "in png_write_flush");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* We have already written out all of the data */
+ if (png_ptr->row_number >= png_ptr->num_rows)
+ return;
+
+ png_compress_IDAT(png_ptr, NULL, 0, Z_SYNC_FLUSH);
+ png_ptr->flush_rows = 0;
+ png_flush(png_ptr);
+}
+#endif /* PNG_WRITE_FLUSH_SUPPORTED */
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+static void png_reset_filter_heuristics(png_structrp png_ptr);/* forward decl */
+#endif
+
+/* Free any memory used in png_ptr struct without freeing the struct itself. */
+static void
+png_write_destroy(png_structrp png_ptr)
+{
+ png_debug(1, "in png_write_destroy");
+
+ /* Free any memory zlib uses */
+ if (png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED)
+ deflateEnd(&png_ptr->zstream);
+
+ /* Free our memory. png_free checks NULL for us. */
+ png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
+ png_free(png_ptr, png_ptr->row_buf);
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ png_free(png_ptr, png_ptr->prev_row);
+ png_free(png_ptr, png_ptr->sub_row);
+ png_free(png_ptr, png_ptr->up_row);
+ png_free(png_ptr, png_ptr->avg_row);
+ png_free(png_ptr, png_ptr->paeth_row);
+#endif
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ /* Use this to save a little code space, it doesn't free the filter_costs */
+ png_reset_filter_heuristics(png_ptr);
+ png_free(png_ptr, png_ptr->filter_costs);
+ png_free(png_ptr, png_ptr->inv_filter_costs);
+#endif
+
+#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+ png_free(png_ptr, png_ptr->chunk_list);
+#endif
+
+ /* The error handling and memory handling information is left intact at this
+ * point: the jmp_buf may still have to be freed. See png_destroy_png_struct
+ * for how this happens.
+ */
+}
+
+/* Free all memory used by the write.
+ * In libpng 1.6.0 this API changed quietly to no longer accept a NULL value for
+ * *png_ptr_ptr. Prior to 1.6.0 it would accept such a value and it would free
+ * the passed in info_structs but it would quietly fail to free any of the data
+ * inside them. In 1.6.0 it quietly does nothing (it has to be quiet because it
+ * has no png_ptr.)
+ */
+void PNGAPI
+png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
+{
+ png_debug(1, "in png_destroy_write_struct");
+
+ if (png_ptr_ptr != NULL)
+ {
+ png_structrp png_ptr = *png_ptr_ptr;
+
+ if (png_ptr != NULL) /* added in libpng 1.6.0 */
+ {
+ png_destroy_info_struct(png_ptr, info_ptr_ptr);
+
+ *png_ptr_ptr = NULL;
+ png_write_destroy(png_ptr);
+ png_destroy_png_struct(png_ptr);
+ }
+ }
+}
+
+/* Allow the application to select one or more row filters to use. */
+void PNGAPI
+png_set_filter(png_structrp png_ptr, int method, int filters)
+{
+ png_debug(1, "in png_set_filter");
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ (method == PNG_INTRAPIXEL_DIFFERENCING))
+ method = PNG_FILTER_TYPE_BASE;
+
+#endif
+ if (method == PNG_FILTER_TYPE_BASE)
+ {
+ switch (filters & (PNG_ALL_FILTERS | 0x07))
+ {
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ case 5:
+ case 6:
+ case 7: png_app_error(png_ptr, "Unknown row filter for method 0");
+ /* FALL THROUGH */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+ case PNG_FILTER_VALUE_NONE:
+ png_ptr->do_filter = PNG_FILTER_NONE; break;
+
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ case PNG_FILTER_VALUE_SUB:
+ png_ptr->do_filter = PNG_FILTER_SUB; break;
+
+ case PNG_FILTER_VALUE_UP:
+ png_ptr->do_filter = PNG_FILTER_UP; break;
+
+ case PNG_FILTER_VALUE_AVG:
+ png_ptr->do_filter = PNG_FILTER_AVG; break;
+
+ case PNG_FILTER_VALUE_PAETH:
+ png_ptr->do_filter = PNG_FILTER_PAETH; break;
+
+ default:
+ png_ptr->do_filter = (png_byte)filters; break;
+#else
+ default:
+ png_app_error(png_ptr, "Unknown row filter for method 0");
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+ }
+
+ /* If we have allocated the row_buf, this means we have already started
+ * with the image and we should have allocated all of the filter buffers
+ * that have been selected. If prev_row isn't already allocated, then
+ * it is too late to start using the filters that need it, since we
+ * will be missing the data in the previous row. If an application
+ * wants to start and stop using particular filters during compression,
+ * it should start out with all of the filters, and then add and
+ * remove them after the start of compression.
+ */
+ if (png_ptr->row_buf != NULL)
+ {
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ if ((png_ptr->do_filter & PNG_FILTER_SUB) && png_ptr->sub_row == NULL)
+ {
+ png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
+ (png_ptr->rowbytes + 1));
+ png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
+ }
+
+ if ((png_ptr->do_filter & PNG_FILTER_UP) && png_ptr->up_row == NULL)
+ {
+ if (png_ptr->prev_row == NULL)
+ {
+ png_warning(png_ptr, "Can't add Up filter after starting");
+ png_ptr->do_filter = (png_byte)(png_ptr->do_filter &
+ ~PNG_FILTER_UP);
+ }
+
+ else
+ {
+ png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
+ (png_ptr->rowbytes + 1));
+ png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
+ }
+ }
+
+ if ((png_ptr->do_filter & PNG_FILTER_AVG) && png_ptr->avg_row == NULL)
+ {
+ if (png_ptr->prev_row == NULL)
+ {
+ png_warning(png_ptr, "Can't add Average filter after starting");
+ png_ptr->do_filter = (png_byte)(png_ptr->do_filter &
+ ~PNG_FILTER_AVG);
+ }
+
+ else
+ {
+ png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
+ (png_ptr->rowbytes + 1));
+ png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
+ }
+ }
+
+ if ((png_ptr->do_filter & PNG_FILTER_PAETH) &&
+ png_ptr->paeth_row == NULL)
+ {
+ if (png_ptr->prev_row == NULL)
+ {
+ png_warning(png_ptr, "Can't add Paeth filter after starting");
+ png_ptr->do_filter &= (png_byte)(~PNG_FILTER_PAETH);
+ }
+
+ else
+ {
+ png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
+ (png_ptr->rowbytes + 1));
+ png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
+ }
+ }
+
+ if (png_ptr->do_filter == PNG_NO_FILTERS)
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+ png_ptr->do_filter = PNG_FILTER_NONE;
+ }
+ }
+ else
+ png_error(png_ptr, "Unknown custom filter method");
+}
+
+/* This allows us to influence the way in which libpng chooses the "best"
+ * filter for the current scanline. While the "minimum-sum-of-absolute-
+ * differences metric is relatively fast and effective, there is some
+ * question as to whether it can be improved upon by trying to keep the
+ * filtered data going to zlib more consistent, hopefully resulting in
+ * better compression.
+ */
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* GRR 970116 */
+/* Convenience reset API. */
+static void
+png_reset_filter_heuristics(png_structrp png_ptr)
+{
+ /* Clear out any old values in the 'weights' - this must be done because if
+ * the app calls set_filter_heuristics multiple times with different
+ * 'num_weights' values we would otherwise potentially have wrong sized
+ * arrays.
+ */
+ png_ptr->num_prev_filters = 0;
+ png_ptr->heuristic_method = PNG_FILTER_HEURISTIC_UNWEIGHTED;
+ if (png_ptr->prev_filters != NULL)
+ {
+ png_bytep old = png_ptr->prev_filters;
+ png_ptr->prev_filters = NULL;
+ png_free(png_ptr, old);
+ }
+ if (png_ptr->filter_weights != NULL)
+ {
+ png_uint_16p old = png_ptr->filter_weights;
+ png_ptr->filter_weights = NULL;
+ png_free(png_ptr, old);
+ }
+
+ if (png_ptr->inv_filter_weights != NULL)
+ {
+ png_uint_16p old = png_ptr->inv_filter_weights;
+ png_ptr->inv_filter_weights = NULL;
+ png_free(png_ptr, old);
+ }
+
+ /* Leave the filter_costs - this array is fixed size. */
+}
+
+static int
+png_init_filter_heuristics(png_structrp png_ptr, int heuristic_method,
+ int num_weights)
+{
+ if (png_ptr == NULL)
+ return 0;
+
+ /* Clear out the arrays */
+ png_reset_filter_heuristics(png_ptr);
+
+ /* Check arguments; the 'reset' function makes the correct settings for the
+ * unweighted case, but we must handle the weight case by initializing the
+ * arrays for the caller.
+ */
+ if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int i;
+
+ if (num_weights > 0)
+ {
+ png_ptr->prev_filters = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)((sizeof (png_byte)) * num_weights));
+
+ /* To make sure that the weighting starts out fairly */
+ for (i = 0; i < num_weights; i++)
+ {
+ png_ptr->prev_filters[i] = 255;
+ }
+
+ png_ptr->filter_weights = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)((sizeof (png_uint_16)) * num_weights));
+
+ png_ptr->inv_filter_weights = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)((sizeof (png_uint_16)) * num_weights));
+
+ for (i = 0; i < num_weights; i++)
+ {
+ png_ptr->inv_filter_weights[i] =
+ png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
+ }
+
+ /* Safe to set this now */
+ png_ptr->num_prev_filters = (png_byte)num_weights;
+ }
+
+ /* If, in the future, there are other filter methods, this would
+ * need to be based on png_ptr->filter.
+ */
+ if (png_ptr->filter_costs == NULL)
+ {
+ png_ptr->filter_costs = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)((sizeof (png_uint_16)) * PNG_FILTER_VALUE_LAST));
+
+ png_ptr->inv_filter_costs = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)((sizeof (png_uint_16)) * PNG_FILTER_VALUE_LAST));
+ }
+
+ for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
+ {
+ png_ptr->inv_filter_costs[i] =
+ png_ptr->filter_costs[i] = PNG_COST_FACTOR;
+ }
+
+ /* All the arrays are inited, safe to set this: */
+ png_ptr->heuristic_method = PNG_FILTER_HEURISTIC_WEIGHTED;
+
+ /* Return the 'ok' code. */
+ return 1;
+ }
+ else if (heuristic_method == PNG_FILTER_HEURISTIC_DEFAULT ||
+ heuristic_method == PNG_FILTER_HEURISTIC_UNWEIGHTED)
+ {
+ return 1;
+ }
+ else
+ {
+ png_warning(png_ptr, "Unknown filter heuristic method");
+ return 0;
+ }
+}
+
+/* Provide floating and fixed point APIs */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_filter_heuristics(png_structrp png_ptr, int heuristic_method,
+ int num_weights, png_const_doublep filter_weights,
+ png_const_doublep filter_costs)
+{
+ png_debug(1, "in png_set_filter_heuristics");
+
+ /* The internal API allocates all the arrays and ensures that the elements of
+ * those arrays are set to the default value.
+ */
+ if (!png_init_filter_heuristics(png_ptr, heuristic_method, num_weights))
+ return;
+
+ /* If using the weighted method copy in the weights. */
+ if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int i;
+ for (i = 0; i < num_weights; i++)
+ {
+ if (filter_weights[i] <= 0.0)
+ {
+ png_ptr->inv_filter_weights[i] =
+ png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
+ }
+
+ else
+ {
+ png_ptr->inv_filter_weights[i] =
+ (png_uint_16)(PNG_WEIGHT_FACTOR*filter_weights[i]+.5);
+
+ png_ptr->filter_weights[i] =
+ (png_uint_16)(PNG_WEIGHT_FACTOR/filter_weights[i]+.5);
+ }
+ }
+
+ /* Here is where we set the relative costs of the different filters. We
+ * should take the desired compression level into account when setting
+ * the costs, so that Paeth, for instance, has a high relative cost at low
+ * compression levels, while it has a lower relative cost at higher
+ * compression settings. The filter types are in order of increasing
+ * relative cost, so it would be possible to do this with an algorithm.
+ */
+ for (i = 0; i < PNG_FILTER_VALUE_LAST; i++) if (filter_costs[i] >= 1.0)
+ {
+ png_ptr->inv_filter_costs[i] =
+ (png_uint_16)(PNG_COST_FACTOR / filter_costs[i] + .5);
+
+ png_ptr->filter_costs[i] =
+ (png_uint_16)(PNG_COST_FACTOR * filter_costs[i] + .5);
+ }
+ }
+}
+#endif /* FLOATING_POINT */
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+void PNGAPI
+png_set_filter_heuristics_fixed(png_structrp png_ptr, int heuristic_method,
+ int num_weights, png_const_fixed_point_p filter_weights,
+ png_const_fixed_point_p filter_costs)
+{
+ png_debug(1, "in png_set_filter_heuristics_fixed");
+
+ /* The internal API allocates all the arrays and ensures that the elements of
+ * those arrays are set to the default value.
+ */
+ if (!png_init_filter_heuristics(png_ptr, heuristic_method, num_weights))
+ return;
+
+ /* If using the weighted method copy in the weights. */
+ if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int i;
+ for (i = 0; i < num_weights; i++)
+ {
+ if (filter_weights[i] <= 0)
+ {
+ png_ptr->inv_filter_weights[i] =
+ png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
+ }
+
+ else
+ {
+ png_ptr->inv_filter_weights[i] = (png_uint_16)
+ ((PNG_WEIGHT_FACTOR*filter_weights[i]+PNG_FP_HALF)/PNG_FP_1);
+
+ png_ptr->filter_weights[i] = (png_uint_16)((PNG_WEIGHT_FACTOR*
+ PNG_FP_1+(filter_weights[i]/2))/filter_weights[i]);
+ }
+ }
+
+ /* Here is where we set the relative costs of the different filters. We
+ * should take the desired compression level into account when setting
+ * the costs, so that Paeth, for instance, has a high relative cost at low
+ * compression levels, while it has a lower relative cost at higher
+ * compression settings. The filter types are in order of increasing
+ * relative cost, so it would be possible to do this with an algorithm.
+ */
+ for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
+ if (filter_costs[i] >= PNG_FP_1)
+ {
+ png_uint_32 tmp;
+
+ /* Use a 32 bit unsigned temporary here because otherwise the
+ * intermediate value will be a 32 bit *signed* integer (ANSI rules)
+ * and this will get the wrong answer on division.
+ */
+ tmp = PNG_COST_FACTOR*PNG_FP_1 + (filter_costs[i]/2);
+ tmp /= filter_costs[i];
+
+ png_ptr->inv_filter_costs[i] = (png_uint_16)tmp;
+
+ tmp = PNG_COST_FACTOR * filter_costs[i] + PNG_FP_HALF;
+ tmp /= PNG_FP_1;
+
+ png_ptr->filter_costs[i] = (png_uint_16)tmp;
+ }
+ }
+}
+#endif /* FIXED_POINT */
+#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
+
+void PNGAPI
+png_set_compression_level(png_structrp png_ptr, int level)
+{
+ png_debug(1, "in png_set_compression_level");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->zlib_level = level;
+}
+
+void PNGAPI
+png_set_compression_mem_level(png_structrp png_ptr, int mem_level)
+{
+ png_debug(1, "in png_set_compression_mem_level");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->zlib_mem_level = mem_level;
+}
+
+void PNGAPI
+png_set_compression_strategy(png_structrp png_ptr, int strategy)
+{
+ png_debug(1, "in png_set_compression_strategy");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* The flag setting here prevents the libpng dynamic selection of strategy.
+ */
+ png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY;
+ png_ptr->zlib_strategy = strategy;
+}
+
+/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
+ * smaller value of window_bits if it can do so safely.
+ */
+void PNGAPI
+png_set_compression_window_bits(png_structrp png_ptr, int window_bits)
+{
+ if (png_ptr == NULL)
+ return;
+
+ /* Prior to 1.6.0 this would warn but then set the window_bits value, this
+ * meant that negative window bits values could be selected which would cause
+ * libpng to write a non-standard PNG file with raw deflate or gzip
+ * compressed IDAT or ancillary chunks. Such files can be read and there is
+ * no warning on read, so this seems like a very bad idea.
+ */
+ if (window_bits > 15)
+ {
+ png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");
+ window_bits = 15;
+ }
+
+ else if (window_bits < 8)
+ {
+ png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
+ window_bits = 8;
+ }
+
+ png_ptr->zlib_window_bits = window_bits;
+}
+
+void PNGAPI
+png_set_compression_method(png_structrp png_ptr, int method)
+{
+ png_debug(1, "in png_set_compression_method");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* This would produce an invalid PNG file if it worked, but it doesn't and
+ * deflate will fault it, so it is harmless to just warn here.
+ */
+ if (method != 8)
+ png_warning(png_ptr, "Only compression method 8 is supported by PNG");
+
+ png_ptr->zlib_method = method;
+}
+
+/* The following were added to libpng-1.5.4 */
+#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+void PNGAPI
+png_set_text_compression_level(png_structrp png_ptr, int level)
+{
+ png_debug(1, "in png_set_text_compression_level");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->zlib_text_level = level;
+}
+
+void PNGAPI
+png_set_text_compression_mem_level(png_structrp png_ptr, int mem_level)
+{
+ png_debug(1, "in png_set_text_compression_mem_level");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->zlib_text_mem_level = mem_level;
+}
+
+void PNGAPI
+png_set_text_compression_strategy(png_structrp png_ptr, int strategy)
+{
+ png_debug(1, "in png_set_text_compression_strategy");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->zlib_text_strategy = strategy;
+}
+
+/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
+ * smaller value of window_bits if it can do so safely.
+ */
+void PNGAPI
+png_set_text_compression_window_bits(png_structrp png_ptr, int window_bits)
+{
+ if (png_ptr == NULL)
+ return;
+
+ if (window_bits > 15)
+ {
+ png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");
+ window_bits = 15;
+ }
+
+ else if (window_bits < 8)
+ {
+ png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
+ window_bits = 8;
+ }
+
+ png_ptr->zlib_text_window_bits = window_bits;
+}
+
+void PNGAPI
+png_set_text_compression_method(png_structrp png_ptr, int method)
+{
+ png_debug(1, "in png_set_text_compression_method");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (method != 8)
+ png_warning(png_ptr, "Only compression method 8 is supported by PNG");
+
+ png_ptr->zlib_text_method = method;
+}
+#endif /* PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED */
+/* end of API added to libpng-1.5.4 */
+
+void PNGAPI
+png_set_write_status_fn(png_structrp png_ptr, png_write_status_ptr write_row_fn)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->write_row_fn = write_row_fn;
+}
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+void PNGAPI
+png_set_write_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr
+ write_user_transform_fn)
+{
+ png_debug(1, "in png_set_write_user_transform_fn");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= PNG_USER_TRANSFORM;
+ png_ptr->write_user_transform_fn = write_user_transform_fn;
+}
+#endif
+
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+void PNGAPI
+png_write_png(png_structrp png_ptr, png_inforp info_ptr,
+ int transforms, voidp params)
+{
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ /* Write the file header information. */
+ png_write_info(png_ptr, info_ptr);
+
+ /* ------ these transformations don't touch the info structure ------- */
+
+#ifdef PNG_WRITE_INVERT_SUPPORTED
+ /* Invert monochrome pixels */
+ if (transforms & PNG_TRANSFORM_INVERT_MONO)
+ png_set_invert_mono(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
+ /* Shift the pixels up to a legal bit depth and fill in
+ * as appropriate to correctly scale the image.
+ */
+ if ((transforms & PNG_TRANSFORM_SHIFT)
+ && (info_ptr->valid & PNG_INFO_sBIT))
+ png_set_shift(png_ptr, &info_ptr->sig_bit);
+#endif
+
+#ifdef PNG_WRITE_PACK_SUPPORTED
+ /* Pack pixels into bytes */
+ if (transforms & PNG_TRANSFORM_PACKING)
+ png_set_packing(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+ /* Swap location of alpha bytes from ARGB to RGBA */
+ if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
+ png_set_swap_alpha(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_FILLER_SUPPORTED
+ /* Pack XRGB/RGBX/ARGB/RGBA into RGB (4 channels -> 3 channels) */
+ if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
+ png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
+
+ else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE)
+ png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
+#endif
+
+#ifdef PNG_WRITE_BGR_SUPPORTED
+ /* Flip BGR pixels to RGB */
+ if (transforms & PNG_TRANSFORM_BGR)
+ png_set_bgr(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_SWAP_SUPPORTED
+ /* Swap bytes of 16-bit files to most significant byte first */
+ if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
+ png_set_swap(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
+ /* Swap bits of 1, 2, 4 bit packed pixel formats */
+ if (transforms & PNG_TRANSFORM_PACKSWAP)
+ png_set_packswap(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+ /* Invert the alpha channel from opacity to transparency */
+ if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
+ png_set_invert_alpha(png_ptr);
+#endif
+
+ /* ----------------------- end of transformations ------------------- */
+
+ /* Write the bits */
+ if (info_ptr->valid & PNG_INFO_IDAT)
+ png_write_image(png_ptr, info_ptr->row_pointers);
+
+ /* It is REQUIRED to call this to finish writing the rest of the file */
+ png_write_end(png_ptr, info_ptr);
+
+ PNG_UNUSED(transforms) /* Quiet compiler warnings */
+ PNG_UNUSED(params)
+}
+#endif
+
+
+#ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
+#ifdef PNG_STDIO_SUPPORTED /* currently required for png_image_write_* */
+/* Initialize the write structure - general purpose utility. */
+static int
+png_image_write_init(png_imagep image)
+{
+ png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, image,
+ png_safe_error, png_safe_warning);
+
+ if (png_ptr != NULL)
+ {
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+
+ if (info_ptr != NULL)
+ {
+ png_controlp control = png_voidcast(png_controlp,
+ png_malloc_warn(png_ptr, (sizeof *control)));
+
+ if (control != NULL)
+ {
+ memset(control, 0, (sizeof *control));
+
+ control->png_ptr = png_ptr;
+ control->info_ptr = info_ptr;
+ control->for_write = 1;
+
+ image->opaque = control;
+ return 1;
+ }
+
+ /* Error clean up */
+ png_destroy_info_struct(png_ptr, &info_ptr);
+ }
+
+ png_destroy_write_struct(&png_ptr, NULL);
+ }
+
+ return png_image_error(image, "png_image_write_: out of memory");
+}
+
+/* Arguments to png_image_write_main: */
+typedef struct
+{
+ /* Arguments: */
+ png_imagep image;
+ png_const_voidp buffer;
+ png_int_32 row_stride;
+ png_const_voidp colormap;
+ int convert_to_8bit;
+ /* Local variables: */
+ png_const_voidp first_row;
+ ptrdiff_t row_bytes;
+ png_voidp local_row;
+} png_image_write_control;
+
+/* Write png_uint_16 input to a 16-bit PNG; the png_ptr has already been set to
+ * do any necessary byte swapping. The component order is defined by the
+ * png_image format value.
+ */
+static int
+png_write_image_16bit(png_voidp argument)
+{
+ png_image_write_control *display = png_voidcast(png_image_write_control*,
+ argument);
+ png_imagep image = display->image;
+ png_structrp png_ptr = image->opaque->png_ptr;
+
+ png_const_uint_16p input_row = png_voidcast(png_const_uint_16p,
+ display->first_row);
+ png_uint_16p output_row = png_voidcast(png_uint_16p, display->local_row);
+ png_uint_16p row_end;
+ const int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
+ int aindex = 0;
+ png_uint_32 y = image->height;
+
+ if (image->format & PNG_FORMAT_FLAG_ALPHA)
+ {
+ if (image->format & PNG_FORMAT_FLAG_AFIRST)
+ {
+ aindex = -1;
+ ++input_row; /* To point to the first component */
+ ++output_row;
+ }
+
+ else
+ aindex = channels;
+ }
+
+ else
+ png_error(png_ptr, "png_write_image: internal call error");
+
+ /* Work out the output row end and count over this, note that the increment
+ * above to 'row' means that row_end can actually be beyond the end of the
+ * row; this is correct.
+ */
+ row_end = output_row + image->width * (channels+1);
+
+ while (y-- > 0)
+ {
+ png_const_uint_16p in_ptr = input_row;
+ png_uint_16p out_ptr = output_row;
+
+ while (out_ptr < row_end)
+ {
+ const png_uint_16 alpha = in_ptr[aindex];
+ png_uint_32 reciprocal = 0;
+ int c;
+
+ out_ptr[aindex] = alpha;
+
+ /* Calculate a reciprocal. The correct calculation is simply
+ * component/alpha*65535 << 15. (I.e. 15 bits of precision); this
+ * allows correct rounding by adding .5 before the shift. 'reciprocal'
+ * is only initialized when required.
+ */
+ if (alpha > 0 && alpha < 65535)
+ reciprocal = ((0xffff<<15)+(alpha>>1))/alpha;
+
+ c = channels;
+ do /* always at least one channel */
+ {
+ png_uint_16 component = *in_ptr++;
+
+ /* The following gives 65535 for an alpha of 0, which is fine,
+ * otherwise if 0/0 is represented as some other value there is more
+ * likely to be a discontinuity which will probably damage
+ * compression when moving from a fully transparent area to a
+ * nearly transparent one. (The assumption here is that opaque
+ * areas tend not to be 0 intensity.)
+ */
+ if (component >= alpha)
+ component = 65535;
+
+ /* component<alpha, so component/alpha is less than one and
+ * component*reciprocal is less than 2^31.
+ */
+ else if (component > 0 && alpha < 65535)
+ {
+ png_uint_32 calc = component * reciprocal;
+ calc += 16384; /* round to nearest */
+ component = (png_uint_16)(calc >> 15);
+ }
+
+ *out_ptr++ = component;
+ }
+ while (--c > 0);
+
+ /* Skip to next component (skip the intervening alpha channel) */
+ ++in_ptr;
+ ++out_ptr;
+ }
+
+ png_write_row(png_ptr, png_voidcast(png_const_bytep, display->local_row));
+ input_row += display->row_bytes/(sizeof (png_uint_16));
+ }
+
+ return 1;
+}
+
+/* Given 16-bit input (1 to 4 channels) write 8-bit output. If an alpha channel
+ * is present it must be removed from the components, the components are then
+ * written in sRGB encoding. No components are added or removed.
+ *
+ * Calculate an alpha reciprocal to reverse pre-multiplication. As above the
+ * calculation can be done to 15 bits of accuracy; however, the output needs to
+ * be scaled in the range 0..255*65535, so include that scaling here.
+ */
+#define UNP_RECIPROCAL(alpha) ((((0xffff*0xff)<<7)+(alpha>>1))/alpha)
+
+static png_byte
+png_unpremultiply(png_uint_32 component, png_uint_32 alpha,
+ png_uint_32 reciprocal/*from the above macro*/)
+{
+ /* The following gives 1.0 for an alpha of 0, which is fine, otherwise if 0/0
+ * is represented as some other value there is more likely to be a
+ * discontinuity which will probably damage compression when moving from a
+ * fully transparent area to a nearly transparent one. (The assumption here
+ * is that opaque areas tend not to be 0 intensity.)
+ *
+ * There is a rounding problem here; if alpha is less than 128 it will end up
+ * as 0 when scaled to 8 bits. To avoid introducing spurious colors into the
+ * output change for this too.
+ */
+ if (component >= alpha || alpha < 128)
+ return 255;
+
+ /* component<alpha, so component/alpha is less than one and
+ * component*reciprocal is less than 2^31.
+ */
+ else if (component > 0)
+ {
+ /* The test is that alpha/257 (rounded) is less than 255, the first value
+ * that becomes 255 is 65407.
+ * NOTE: this must agree with the PNG_DIV257 macro (which must, therefore,
+ * be exact!) [Could also test reciprocal != 0]
+ */
+ if (alpha < 65407)
+ {
+ component *= reciprocal;
+ component += 64; /* round to nearest */
+ component >>= 7;
+ }
+
+ else
+ component *= 255;
+
+ /* Convert the component to sRGB. */
+ return (png_byte)PNG_sRGB_FROM_LINEAR(component);
+ }
+
+ else
+ return 0;
+}
+
+static int
+png_write_image_8bit(png_voidp argument)
+{
+ png_image_write_control *display = png_voidcast(png_image_write_control*,
+ argument);
+ png_imagep image = display->image;
+ png_structrp png_ptr = image->opaque->png_ptr;
+
+ png_const_uint_16p input_row = png_voidcast(png_const_uint_16p,
+ display->first_row);
+ png_bytep output_row = png_voidcast(png_bytep, display->local_row);
+ png_uint_32 y = image->height;
+ const int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
+
+ if (image->format & PNG_FORMAT_FLAG_ALPHA)
+ {
+ png_bytep row_end;
+ int aindex;
+
+ if (image->format & PNG_FORMAT_FLAG_AFIRST)
+ {
+ aindex = -1;
+ ++input_row; /* To point to the first component */
+ ++output_row;
+ }
+
+ else
+ aindex = channels;
+
+ /* Use row_end in place of a loop counter: */
+ row_end = output_row + image->width * (channels+1);
+
+ while (y-- > 0)
+ {
+ png_const_uint_16p in_ptr = input_row;
+ png_bytep out_ptr = output_row;
+
+ while (out_ptr < row_end)
+ {
+ png_uint_16 alpha = in_ptr[aindex];
+ png_byte alphabyte = (png_byte)PNG_DIV257(alpha);
+ png_uint_32 reciprocal = 0;
+ int c;
+
+ /* Scale and write the alpha channel. */
+ out_ptr[aindex] = alphabyte;
+
+ if (alphabyte > 0 && alphabyte < 255)
+ reciprocal = UNP_RECIPROCAL(alpha);
+
+ c = channels;
+ do /* always at least one channel */
+ *out_ptr++ = png_unpremultiply(*in_ptr++, alpha, reciprocal);
+ while (--c > 0);
+
+ /* Skip to next component (skip the intervening alpha channel) */
+ ++in_ptr;
+ ++out_ptr;
+ } /* while out_ptr < row_end */
+
+ png_write_row(png_ptr, png_voidcast(png_const_bytep,
+ display->local_row));
+ input_row += display->row_bytes/(sizeof (png_uint_16));
+ } /* while y */
+ }
+
+ else
+ {
+ /* No alpha channel, so the row_end really is the end of the row and it
+ * is sufficient to loop over the components one by one.
+ */
+ png_bytep row_end = output_row + image->width * channels;
+
+ while (y-- > 0)
+ {
+ png_const_uint_16p in_ptr = input_row;
+ png_bytep out_ptr = output_row;
+
+ while (out_ptr < row_end)
+ {
+ png_uint_32 component = *in_ptr++;
+
+ component *= 255;
+ *out_ptr++ = (png_byte)PNG_sRGB_FROM_LINEAR(component);
+ }
+
+ png_write_row(png_ptr, output_row);
+ input_row += display->row_bytes/(sizeof (png_uint_16));
+ }
+ }
+
+ return 1;
+}
+
+static void
+png_image_set_PLTE(png_image_write_control *display)
+{
+ const png_imagep image = display->image;
+ const void *cmap = display->colormap;
+ const int entries = image->colormap_entries > 256 ? 256 :
+ (int)image->colormap_entries;
+
+ /* NOTE: the caller must check for cmap != NULL and entries != 0 */
+ const png_uint_32 format = image->format;
+ const int channels = PNG_IMAGE_SAMPLE_CHANNELS(format);
+
+# ifdef PNG_FORMAT_BGR_SUPPORTED
+ const int afirst = (format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
+ (format & PNG_FORMAT_FLAG_ALPHA) != 0;
+# else
+# define afirst 0
+# endif
+
+# ifdef PNG_FORMAT_BGR_SUPPORTED
+ const int bgr = (format & PNG_FORMAT_FLAG_BGR) ? 2 : 0;
+# else
+# define bgr 0
+# endif
+
+ int i, num_trans;
+ png_color palette[256];
+ png_byte tRNS[256];
+
+ memset(tRNS, 255, (sizeof tRNS));
+ memset(palette, 0, (sizeof palette));
+
+ for (i=num_trans=0; i<entries; ++i)
+ {
+ /* This gets automatically converted to sRGB with reversal of the
+ * pre-multiplication if the color-map has an alpha channel.
+ */
+ if (format & PNG_FORMAT_FLAG_LINEAR)
+ {
+ png_const_uint_16p entry = png_voidcast(png_const_uint_16p, cmap);
+
+ entry += i * channels;
+
+ if (channels & 1) /* no alpha */
+ {
+ if (channels >= 3) /* RGB */
+ {
+ palette[i].blue = (png_byte)PNG_sRGB_FROM_LINEAR(255 *
+ entry[(2 ^ bgr)]);
+ palette[i].green = (png_byte)PNG_sRGB_FROM_LINEAR(255 *
+ entry[1]);
+ palette[i].red = (png_byte)PNG_sRGB_FROM_LINEAR(255 *
+ entry[bgr]);
+ }
+
+ else /* Gray */
+ palette[i].blue = palette[i].red = palette[i].green =
+ (png_byte)PNG_sRGB_FROM_LINEAR(255 * *entry);
+ }
+
+ else /* alpha */
+ {
+ png_uint_16 alpha = entry[afirst ? 0 : channels-1];
+ png_byte alphabyte = (png_byte)PNG_DIV257(alpha);
+ png_uint_32 reciprocal = 0;
+
+ /* Calculate a reciprocal, as in the png_write_image_8bit code above
+ * this is designed to produce a value scaled to 255*65535 when
+ * divided by 128 (i.e. asr 7).
+ */
+ if (alphabyte > 0 && alphabyte < 255)
+ reciprocal = (((0xffff*0xff)<<7)+(alpha>>1))/alpha;
+
+ tRNS[i] = alphabyte;
+ if (alphabyte < 255)
+ num_trans = i+1;
+
+ if (channels >= 3) /* RGB */
+ {
+ palette[i].blue = png_unpremultiply(entry[afirst + (2 ^ bgr)],
+ alpha, reciprocal);
+ palette[i].green = png_unpremultiply(entry[afirst + 1], alpha,
+ reciprocal);
+ palette[i].red = png_unpremultiply(entry[afirst + bgr], alpha,
+ reciprocal);
+ }
+
+ else /* gray */
+ palette[i].blue = palette[i].red = palette[i].green =
+ png_unpremultiply(entry[afirst], alpha, reciprocal);
+ }
+ }
+
+ else /* Color-map has sRGB values */
+ {
+ png_const_bytep entry = png_voidcast(png_const_bytep, cmap);
+
+ entry += i * channels;
+
+ switch (channels)
+ {
+ case 4:
+ tRNS[i] = entry[afirst ? 0 : 3];
+ if (tRNS[i] < 255)
+ num_trans = i+1;
+ /* FALL THROUGH */
+ case 3:
+ palette[i].blue = entry[afirst + (2 ^ bgr)];
+ palette[i].green = entry[afirst + 1];
+ palette[i].red = entry[afirst + bgr];
+ break;
+
+ case 2:
+ tRNS[i] = entry[1 ^ afirst];
+ if (tRNS[i] < 255)
+ num_trans = i+1;
+ /* FALL THROUGH */
+ case 1:
+ palette[i].blue = palette[i].red = palette[i].green =
+ entry[afirst];
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+
+# ifdef afirst
+# undef afirst
+# endif
+# ifdef bgr
+# undef bgr
+# endif
+
+ png_set_PLTE(image->opaque->png_ptr, image->opaque->info_ptr, palette,
+ entries);
+
+ if (num_trans > 0)
+ png_set_tRNS(image->opaque->png_ptr, image->opaque->info_ptr, tRNS,
+ num_trans, NULL);
+
+ image->colormap_entries = entries;
+}
+
+static int
+png_image_write_main(png_voidp argument)
+{
+ png_image_write_control *display = png_voidcast(png_image_write_control*,
+ argument);
+ png_imagep image = display->image;
+ png_structrp png_ptr = image->opaque->png_ptr;
+ png_inforp info_ptr = image->opaque->info_ptr;
+ png_uint_32 format = image->format;
+
+ int colormap = (format & PNG_FORMAT_FLAG_COLORMAP) != 0;
+ int linear = !colormap && (format & PNG_FORMAT_FLAG_LINEAR) != 0; /* input */
+ int alpha = !colormap && (format & PNG_FORMAT_FLAG_ALPHA) != 0;
+ int write_16bit = linear && !colormap && !display->convert_to_8bit;
+
+# ifdef PNG_BENIGN_ERRORS_SUPPORTED
+ /* Make sure we error out on any bad situation */
+ png_set_benign_errors(png_ptr, 0/*error*/);
+# endif
+
+ /* Default the 'row_stride' parameter if required. */
+ if (display->row_stride == 0)
+ display->row_stride = PNG_IMAGE_ROW_STRIDE(*image);
+
+ /* Set the required transforms then write the rows in the correct order. */
+ if (format & PNG_FORMAT_FLAG_COLORMAP)
+ {
+ if (display->colormap != NULL && image->colormap_entries > 0)
+ {
+ png_uint_32 entries = image->colormap_entries;
+
+ png_set_IHDR(png_ptr, info_ptr, image->width, image->height,
+ entries > 16 ? 8 : (entries > 4 ? 4 : (entries > 2 ? 2 : 1)),
+ PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE,
+ PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+
+ png_image_set_PLTE(display);
+ }
+
+ else
+ png_error(image->opaque->png_ptr,
+ "no color-map for color-mapped image");
+ }
+
+ else
+ png_set_IHDR(png_ptr, info_ptr, image->width, image->height,
+ write_16bit ? 16 : 8,
+ ((format & PNG_FORMAT_FLAG_COLOR) ? PNG_COLOR_MASK_COLOR : 0) +
+ ((format & PNG_FORMAT_FLAG_ALPHA) ? PNG_COLOR_MASK_ALPHA : 0),
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+
+ /* Counter-intuitively the data transformations must be called *after*
+ * png_write_info, not before as in the read code, but the 'set' functions
+ * must still be called before. Just set the color space information, never
+ * write an interlaced image.
+ */
+
+ if (write_16bit)
+ {
+ /* The gamma here is 1.0 (linear) and the cHRM chunk matches sRGB. */
+ png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_LINEAR);
+
+ if (!(image->flags & PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB))
+ png_set_cHRM_fixed(png_ptr, info_ptr,
+ /* color x y */
+ /* white */ 31270, 32900,
+ /* red */ 64000, 33000,
+ /* green */ 30000, 60000,
+ /* blue */ 15000, 6000
+ );
+ }
+
+ else if (!(image->flags & PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB))
+ png_set_sRGB(png_ptr, info_ptr, PNG_sRGB_INTENT_PERCEPTUAL);
+
+ /* Else writing an 8-bit file and the *colors* aren't sRGB, but the 8-bit
+ * space must still be gamma encoded.
+ */
+ else
+ png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_sRGB_INVERSE);
+
+ /* Write the file header. */
+ png_write_info(png_ptr, info_ptr);
+
+ /* Now set up the data transformations (*after* the header is written),
+ * remove the handled transformations from the 'format' flags for checking.
+ *
+ * First check for a little endian system if writing 16 bit files.
+ */
+ if (write_16bit)
+ {
+ PNG_CONST png_uint_16 le = 0x0001;
+
+ if (*(png_const_bytep)&le)
+ png_set_swap(png_ptr);
+ }
+
+# ifdef PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED
+ if (format & PNG_FORMAT_FLAG_BGR)
+ {
+ if (!colormap && (format & PNG_FORMAT_FLAG_COLOR) != 0)
+ png_set_bgr(png_ptr);
+ format &= ~PNG_FORMAT_FLAG_BGR;
+ }
+# endif
+
+# ifdef PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED
+ if (format & PNG_FORMAT_FLAG_AFIRST)
+ {
+ if (!colormap && (format & PNG_FORMAT_FLAG_ALPHA) != 0)
+ png_set_swap_alpha(png_ptr);
+ format &= ~PNG_FORMAT_FLAG_AFIRST;
+ }
+# endif
+
+ /* If there are 16 or fewer color-map entries we wrote a lower bit depth
+ * above, but the application data is still byte packed.
+ */
+ if (colormap && image->colormap_entries <= 16)
+ png_set_packing(png_ptr);
+
+ /* That should have handled all (both) the transforms. */
+ if ((format & ~(png_uint_32)(PNG_FORMAT_FLAG_COLOR | PNG_FORMAT_FLAG_LINEAR |
+ PNG_FORMAT_FLAG_ALPHA | PNG_FORMAT_FLAG_COLORMAP)) != 0)
+ png_error(png_ptr, "png_write_image: unsupported transformation");
+
+ {
+ png_const_bytep row = png_voidcast(png_const_bytep, display->buffer);
+ ptrdiff_t row_bytes = display->row_stride;
+
+ if (linear)
+ row_bytes *= (sizeof (png_uint_16));
+
+ if (row_bytes < 0)
+ row += (image->height-1) * (-row_bytes);
+
+ display->first_row = row;
+ display->row_bytes = row_bytes;
+ }
+
+ /* Apply 'fast' options if the flag is set. */
+ if ((image->flags & PNG_IMAGE_FLAG_FAST) != 0)
+ {
+ png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE, PNG_NO_FILTERS);
+ /* NOTE: determined by experiment using pngstest, this reflects some
+ * balance between the time to write the image once and the time to read
+ * it about 50 times. The speed-up in pngstest was about 10-20% of the
+ * total (user) time on a heavily loaded system.
+ */
+ png_set_compression_level(png_ptr, 3);
+ }
+
+ /* Check for the cases that currently require a pre-transform on the row
+ * before it is written. This only applies when the input is 16-bit and
+ * either there is an alpha channel or it is converted to 8-bit.
+ */
+ if ((linear && alpha) || (!colormap && display->convert_to_8bit))
+ {
+ png_bytep row = png_voidcast(png_bytep, png_malloc(png_ptr,
+ png_get_rowbytes(png_ptr, info_ptr)));
+ int result;
+
+ display->local_row = row;
+ if (write_16bit)
+ result = png_safe_execute(image, png_write_image_16bit, display);
+ else
+ result = png_safe_execute(image, png_write_image_8bit, display);
+ display->local_row = NULL;
+
+ png_free(png_ptr, row);
+
+ /* Skip the 'write_end' on error: */
+ if (!result)
+ return 0;
+ }
+
+ /* Otherwise this is the case where the input is in a format currently
+ * supported by the rest of the libpng write code; call it directly.
+ */
+ else
+ {
+ png_const_bytep row = png_voidcast(png_const_bytep, display->first_row);
+ ptrdiff_t row_bytes = display->row_bytes;
+ png_uint_32 y = image->height;
+
+ while (y-- > 0)
+ {
+ png_write_row(png_ptr, row);
+ row += row_bytes;
+ }
+ }
+
+ png_write_end(png_ptr, info_ptr);
+ return 1;
+}
+
+int PNGAPI
+png_image_write_to_stdio(png_imagep image, FILE *file, int convert_to_8bit,
+ const void *buffer, png_int_32 row_stride, const void *colormap)
+{
+ /* Write the image to the given (FILE*). */
+ if (image != NULL && image->version == PNG_IMAGE_VERSION)
+ {
+ if (file != NULL)
+ {
+ if (png_image_write_init(image))
+ {
+ png_image_write_control display;
+ int result;
+
+ /* This is slightly evil, but png_init_io doesn't do anything other
+ * than this and we haven't changed the standard IO functions so
+ * this saves a 'safe' function.
+ */
+ image->opaque->png_ptr->io_ptr = file;
+
+ memset(&display, 0, (sizeof display));
+ display.image = image;
+ display.buffer = buffer;
+ display.row_stride = row_stride;
+ display.colormap = colormap;
+ display.convert_to_8bit = convert_to_8bit;
+
+ result = png_safe_execute(image, png_image_write_main, &display);
+ png_image_free(image);
+ return result;
+ }
+
+ else
+ return 0;
+ }
+
+ else
+ return png_image_error(image,
+ "png_image_write_to_stdio: invalid argument");
+ }
+
+ else if (image != NULL)
+ return png_image_error(image,
+ "png_image_write_to_stdio: incorrect PNG_IMAGE_VERSION");
+
+ else
+ return 0;
+}
+
+int PNGAPI
+png_image_write_to_file(png_imagep image, const char *file_name,
+ int convert_to_8bit, const void *buffer, png_int_32 row_stride,
+ const void *colormap)
+{
+ /* Write the image to the named file. */
+ if (image != NULL && image->version == PNG_IMAGE_VERSION)
+ {
+ if (file_name != NULL)
+ {
+ FILE *fp = fopen(file_name, "wb");
+
+ if (fp != NULL)
+ {
+ if (png_image_write_to_stdio(image, fp, convert_to_8bit, buffer,
+ row_stride, colormap))
+ {
+ int error; /* from fflush/fclose */
+
+ /* Make sure the file is flushed correctly. */
+ if (fflush(fp) == 0 && ferror(fp) == 0)
+ {
+ if (fclose(fp) == 0)
+ return 1;
+
+ error = errno; /* from fclose */
+ }
+
+ else
+ {
+ error = errno; /* from fflush or ferror */
+ (void)fclose(fp);
+ }
+
+ (void)remove(file_name);
+ /* The image has already been cleaned up; this is just used to
+ * set the error (because the original write succeeded).
+ */
+ return png_image_error(image, strerror(error));
+ }
+
+ else
+ {
+ /* Clean up: just the opened file. */
+ (void)fclose(fp);
+ (void)remove(file_name);
+ return 0;
+ }
+ }
+
+ else
+ return png_image_error(image, strerror(errno));
+ }
+
+ else
+ return png_image_error(image,
+ "png_image_write_to_file: invalid argument");
+ }
+
+ else if (image != NULL)
+ return png_image_error(image,
+ "png_image_write_to_file: incorrect PNG_IMAGE_VERSION");
+
+ else
+ return 0;
+}
+#endif /* PNG_STDIO_SUPPORTED */
+#endif /* SIMPLIFIED_WRITE */
+#endif /* PNG_WRITE_SUPPORTED */
+#endif//_FPDFAPI_MINI_
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwtran.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwtran.c
new file mode 100644
index 0000000..8f28110
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwtran.c
@@ -0,0 +1,638 @@
+
+/* pngwtran.c - transforms the data in a row for PNG writers
+ *
+ * Last changed in libpng 1.6.0 [February 14, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "pngpriv.h"
+
+#ifdef PNG_WRITE_SUPPORTED
+
+#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
+/* Transform the data according to the user's wishes. The order of
+ * transformations is significant.
+ */
+void /* PRIVATE */
+png_do_write_transformations(png_structrp png_ptr, png_row_infop row_info)
+{
+ png_debug(1, "in png_do_write_transformations");
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ if (png_ptr->transformations & PNG_USER_TRANSFORM)
+ if (png_ptr->write_user_transform_fn != NULL)
+ (*(png_ptr->write_user_transform_fn)) /* User write transform
+ function */
+ (png_ptr, /* png_ptr */
+ row_info, /* row_info: */
+ /* png_uint_32 width; width of row */
+ /* png_size_t rowbytes; number of bytes in row */
+ /* png_byte color_type; color type of pixels */
+ /* png_byte bit_depth; bit depth of samples */
+ /* png_byte channels; number of channels (1-4) */
+ /* png_byte pixel_depth; bits per pixel (depth*channels) */
+ png_ptr->row_buf + 1); /* start of pixel data for row */
+#endif
+
+#ifdef PNG_WRITE_FILLER_SUPPORTED
+ if (png_ptr->transformations & PNG_FILLER)
+ png_do_strip_channel(row_info, png_ptr->row_buf + 1,
+ !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
+#endif
+
+#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ png_do_packswap(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_WRITE_PACK_SUPPORTED
+ if (png_ptr->transformations & PNG_PACK)
+ png_do_pack(row_info, png_ptr->row_buf + 1,
+ (png_uint_32)png_ptr->bit_depth);
+#endif
+
+#ifdef PNG_WRITE_SWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_do_swap(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
+ if (png_ptr->transformations & PNG_SHIFT)
+ png_do_shift(row_info, png_ptr->row_buf + 1,
+ &(png_ptr->shift));
+#endif
+
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_SWAP_ALPHA)
+ png_do_write_swap_alpha(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_ALPHA)
+ png_do_write_invert_alpha(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_WRITE_BGR_SUPPORTED
+ if (png_ptr->transformations & PNG_BGR)
+ png_do_bgr(row_info, png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_WRITE_INVERT_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_MONO)
+ png_do_invert(row_info, png_ptr->row_buf + 1);
+#endif
+}
+
+#ifdef PNG_WRITE_PACK_SUPPORTED
+/* Pack pixels into bytes. Pass the true bit depth in bit_depth. The
+ * row_info bit depth should be 8 (one pixel per byte). The channels
+ * should be 1 (this only happens on grayscale and paletted images).
+ */
+void /* PRIVATE */
+png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
+{
+ png_debug(1, "in png_do_pack");
+
+ if (row_info->bit_depth == 8 &&
+ row_info->channels == 1)
+ {
+ switch ((int)bit_depth)
+ {
+ case 1:
+ {
+ png_bytep sp, dp;
+ int mask, v;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ sp = row;
+ dp = row;
+ mask = 0x80;
+ v = 0;
+
+ for (i = 0; i < row_width; i++)
+ {
+ if (*sp != 0)
+ v |= mask;
+
+ sp++;
+
+ if (mask > 1)
+ mask >>= 1;
+
+ else
+ {
+ mask = 0x80;
+ *dp = (png_byte)v;
+ dp++;
+ v = 0;
+ }
+ }
+
+ if (mask != 0x80)
+ *dp = (png_byte)v;
+
+ break;
+ }
+
+ case 2:
+ {
+ png_bytep sp, dp;
+ int shift, v;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ sp = row;
+ dp = row;
+ shift = 6;
+ v = 0;
+
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte value;
+
+ value = (png_byte)(*sp & 0x03);
+ v |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 6;
+ *dp = (png_byte)v;
+ dp++;
+ v = 0;
+ }
+
+ else
+ shift -= 2;
+
+ sp++;
+ }
+
+ if (shift != 6)
+ *dp = (png_byte)v;
+
+ break;
+ }
+
+ case 4:
+ {
+ png_bytep sp, dp;
+ int shift, v;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ sp = row;
+ dp = row;
+ shift = 4;
+ v = 0;
+
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte value;
+
+ value = (png_byte)(*sp & 0x0f);
+ v |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 4;
+ *dp = (png_byte)v;
+ dp++;
+ v = 0;
+ }
+
+ else
+ shift -= 4;
+
+ sp++;
+ }
+
+ if (shift != 4)
+ *dp = (png_byte)v;
+
+ break;
+ }
+
+ default:
+ break;
+ }
+
+ row_info->bit_depth = (png_byte)bit_depth;
+ row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
+ row_info->width);
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
+/* Shift pixel values to take advantage of whole range. Pass the
+ * true number of bits in bit_depth. The row should be packed
+ * according to row_info->bit_depth. Thus, if you had a row of
+ * bit depth 4, but the pixels only had values from 0 to 7, you
+ * would pass 3 as bit_depth, and this routine would translate the
+ * data to 0 to 15.
+ */
+void /* PRIVATE */
+png_do_shift(png_row_infop row_info, png_bytep row,
+ png_const_color_8p bit_depth)
+{
+ png_debug(1, "in png_do_shift");
+
+ if (row_info->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ int shift_start[4], shift_dec[4];
+ int channels = 0;
+
+ if (row_info->color_type & PNG_COLOR_MASK_COLOR)
+ {
+ shift_start[channels] = row_info->bit_depth - bit_depth->red;
+ shift_dec[channels] = bit_depth->red;
+ channels++;
+
+ shift_start[channels] = row_info->bit_depth - bit_depth->green;
+ shift_dec[channels] = bit_depth->green;
+ channels++;
+
+ shift_start[channels] = row_info->bit_depth - bit_depth->blue;
+ shift_dec[channels] = bit_depth->blue;
+ channels++;
+ }
+
+ else
+ {
+ shift_start[channels] = row_info->bit_depth - bit_depth->gray;
+ shift_dec[channels] = bit_depth->gray;
+ channels++;
+ }
+
+ if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ shift_start[channels] = row_info->bit_depth - bit_depth->alpha;
+ shift_dec[channels] = bit_depth->alpha;
+ channels++;
+ }
+
+ /* With low row depths, could only be grayscale, so one channel */
+ if (row_info->bit_depth < 8)
+ {
+ png_bytep bp = row;
+ png_size_t i;
+ unsigned int mask;
+ png_size_t row_bytes = row_info->rowbytes;
+
+ if (bit_depth->gray == 1 && row_info->bit_depth == 2)
+ mask = 0x55;
+
+ else if (row_info->bit_depth == 4 && bit_depth->gray == 3)
+ mask = 0x11;
+
+ else
+ mask = 0xff;
+
+ for (i = 0; i < row_bytes; i++, bp++)
+ {
+ int j;
+ unsigned int v, out;
+
+ v = *bp;
+ out = 0;
+
+ for (j = shift_start[0]; j > -shift_dec[0]; j -= shift_dec[0])
+ {
+ if (j > 0)
+ out |= v << j;
+
+ else
+ out |= (v >> (-j)) & mask;
+ }
+
+ *bp = (png_byte)(out & 0xff);
+ }
+ }
+
+ else if (row_info->bit_depth == 8)
+ {
+ png_bytep bp = row;
+ png_uint_32 i;
+ png_uint_32 istop = channels * row_info->width;
+
+ for (i = 0; i < istop; i++, bp++)
+ {
+
+ const unsigned int c = i%channels;
+ int j;
+ unsigned int v, out;
+
+ v = *bp;
+ out = 0;
+
+ for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
+ {
+ if (j > 0)
+ out |= v << j;
+
+ else
+ out |= v >> (-j);
+ }
+
+ *bp = (png_byte)(out & 0xff);
+ }
+ }
+
+ else
+ {
+ png_bytep bp;
+ png_uint_32 i;
+ png_uint_32 istop = channels * row_info->width;
+
+ for (bp = row, i = 0; i < istop; i++)
+ {
+ const unsigned int c = i%channels;
+ int j;
+ unsigned int value, v;
+
+ v = png_get_uint_16(bp);
+ value = 0;
+
+ for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
+ {
+ if (j > 0)
+ value |= v << j;
+
+ else
+ value |= v >> (-j);
+ }
+ *bp++ = (png_byte)((value >> 8) & 0xff);
+ *bp++ = (png_byte)(value & 0xff);
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+void /* PRIVATE */
+png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_write_swap_alpha");
+
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This converts from ARGB to RGBA */
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ png_byte save = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = save;
+ }
+ }
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ else
+ {
+ /* This converts from AARRGGBB to RRGGBBAA */
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ png_byte save[2];
+ save[0] = *(sp++);
+ save[1] = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = save[0];
+ *(dp++) = save[1];
+ }
+ }
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This converts from AG to GA */
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ png_byte save = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = save;
+ }
+ }
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ else
+ {
+ /* This converts from AAGG to GGAA */
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ png_byte save[2];
+ save[0] = *(sp++);
+ save[1] = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = save[0];
+ *(dp++) = save[1];
+ }
+ }
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
+ }
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+void /* PRIVATE */
+png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_write_invert_alpha");
+
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This inverts the alpha channel in RGBA */
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ /* Does nothing
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ */
+ sp+=3; dp = sp;
+ *(dp++) = (png_byte)(255 - *(sp++));
+ }
+ }
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ else
+ {
+ /* This inverts the alpha channel in RRGGBBAA */
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ /* Does nothing
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ */
+ sp+=6; dp = sp;
+ *(dp++) = (png_byte)(255 - *(sp++));
+ *(dp++) = (png_byte)(255 - *(sp++));
+ }
+ }
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
+ }
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This inverts the alpha channel in GA */
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ *(dp++) = *(sp++);
+ *(dp++) = (png_byte)(255 - *(sp++));
+ }
+ }
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ else
+ {
+ /* This inverts the alpha channel in GGAA */
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ /* Does nothing
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ */
+ sp+=2; dp = sp;
+ *(dp++) = (png_byte)(255 - *(sp++));
+ *(dp++) = (png_byte)(255 - *(sp++));
+ }
+ }
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
+ }
+ }
+}
+#endif
+#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+/* Undoes intrapixel differencing */
+void /* PRIVATE */
+png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_write_intrapixel");
+
+ if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ int bytes_per_pixel;
+ png_uint_32 row_width = row_info->width;
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ bytes_per_pixel = 3;
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ bytes_per_pixel = 4;
+
+ else
+ return;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
+ {
+ *(rp) = (png_byte)((*rp - *(rp + 1)) & 0xff);
+ *(rp + 2) = (png_byte)((*(rp + 2) - *(rp + 1)) & 0xff);
+ }
+ }
+
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ else if (row_info->bit_depth == 16)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ bytes_per_pixel = 6;
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ bytes_per_pixel = 8;
+
+ else
+ return;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
+ {
+ png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
+ png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
+ png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
+ png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffL);
+ png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffL);
+ *(rp ) = (png_byte)((red >> 8) & 0xff);
+ *(rp + 1) = (png_byte)(red & 0xff);
+ *(rp + 4) = (png_byte)((blue >> 8) & 0xff);
+ *(rp + 5) = (png_byte)(blue & 0xff);
+ }
+ }
+#endif /* PNG_WRITE_16BIT_SUPPORTED */
+ }
+}
+#endif /* PNG_MNG_FEATURES_SUPPORTED */
+#endif /* PNG_WRITE_SUPPORTED */
+#endif//_FPDFAPI_MINI_
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwutil.c b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwutil.c
new file mode 100644
index 0000000..40955b9
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/fx_pngwutil.c
@@ -0,0 +1,3024 @@
+
+/* pngwutil.c - utilities to write a PNG file
+ *
+ * Last changed in libpng 1.6.2 [April 25, 2013]
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) || defined(_PNG_DECODER_)) && !defined(_USE_ADDIN_) && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "pngpriv.h"
+
+#ifdef PNG_WRITE_SUPPORTED
+
+#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
+/* Place a 32-bit number into a buffer in PNG byte order. We work
+ * with unsigned numbers for convenience, although one supported
+ * ancillary chunk uses signed (two's complement) numbers.
+ */
+void PNGAPI
+png_save_uint_32(png_bytep buf, png_uint_32 i)
+{
+ buf[0] = (png_byte)((i >> 24) & 0xff);
+ buf[1] = (png_byte)((i >> 16) & 0xff);
+ buf[2] = (png_byte)((i >> 8) & 0xff);
+ buf[3] = (png_byte)(i & 0xff);
+}
+
+/* Place a 16-bit number into a buffer in PNG byte order.
+ * The parameter is declared unsigned int, not png_uint_16,
+ * just to avoid potential problems on pre-ANSI C compilers.
+ */
+void PNGAPI
+png_save_uint_16(png_bytep buf, unsigned int i)
+{
+ buf[0] = (png_byte)((i >> 8) & 0xff);
+ buf[1] = (png_byte)(i & 0xff);
+}
+#endif
+
+/* Simple function to write the signature. If we have already written
+ * the magic bytes of the signature, or more likely, the PNG stream is
+ * being embedded into another stream and doesn't need its own signature,
+ * we should call png_set_sig_bytes() to tell libpng how many of the
+ * bytes have already been written.
+ */
+void PNGAPI
+png_write_sig(png_structrp png_ptr)
+{
+ png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the signature is being written */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_SIGNATURE;
+#endif
+
+ /* Write the rest of the 8 byte signature */
+ png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
+ (png_size_t)(8 - png_ptr->sig_bytes));
+
+ if (png_ptr->sig_bytes < 3)
+ png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
+}
+
+/* Write the start of a PNG chunk. The type is the chunk type.
+ * The total_length is the sum of the lengths of all the data you will be
+ * passing in png_write_chunk_data().
+ */
+static void
+png_write_chunk_header(png_structrp png_ptr, png_uint_32 chunk_name,
+ png_uint_32 length)
+{
+ png_byte buf[8];
+
+#if defined(PNG_DEBUG) && (PNG_DEBUG > 0)
+ PNG_CSTRING_FROM_CHUNK(buf, chunk_name);
+ png_debug2(0, "Writing %s chunk, length = %lu", buf, (unsigned long)length);
+#endif
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the chunk header is being written.
+ * PNG_IO_CHUNK_HDR requires a single I/O call.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_HDR;
+#endif
+
+ /* Write the length and the chunk name */
+ png_save_uint_32(buf, length);
+ png_save_uint_32(buf + 4, chunk_name);
+ png_write_data(png_ptr, buf, 8);
+
+ /* Put the chunk name into png_ptr->chunk_name */
+ png_ptr->chunk_name = chunk_name;
+
+ /* Reset the crc and run it over the chunk name */
+ png_reset_crc(png_ptr);
+
+ png_calculate_crc(png_ptr, buf + 4, 4);
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that chunk data will (possibly) be written.
+ * PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_DATA;
+#endif
+}
+
+void PNGAPI
+png_write_chunk_start(png_structrp png_ptr, png_const_bytep chunk_string,
+ png_uint_32 length)
+{
+ png_write_chunk_header(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), length);
+}
+
+/* Write the data of a PNG chunk started with png_write_chunk_header().
+ * Note that multiple calls to this function are allowed, and that the
+ * sum of the lengths from these calls *must* add up to the total_length
+ * given to png_write_chunk_header().
+ */
+void PNGAPI
+png_write_chunk_data(png_structrp png_ptr, png_const_bytep data,
+ png_size_t length)
+{
+ /* Write the data, and run the CRC over it */
+ if (png_ptr == NULL)
+ return;
+
+ if (data != NULL && length > 0)
+ {
+ png_write_data(png_ptr, data, length);
+
+ /* Update the CRC after writing the data,
+ * in case that the user I/O routine alters it.
+ */
+ png_calculate_crc(png_ptr, data, length);
+ }
+}
+
+/* Finish a chunk started with png_write_chunk_header(). */
+void PNGAPI
+png_write_chunk_end(png_structrp png_ptr)
+{
+ png_byte buf[4];
+
+ if (png_ptr == NULL) return;
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the chunk CRC is being written.
+ * PNG_IO_CHUNK_CRC requires a single I/O function call.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_CRC;
+#endif
+
+ /* Write the crc in a single operation */
+ png_save_uint_32(buf, png_ptr->crc);
+
+ png_write_data(png_ptr, buf, (png_size_t)4);
+}
+
+/* Write a PNG chunk all at once. The type is an array of ASCII characters
+ * representing the chunk name. The array must be at least 4 bytes in
+ * length, and does not need to be null terminated. To be safe, pass the
+ * pre-defined chunk names here, and if you need a new one, define it
+ * where the others are defined. The length is the length of the data.
+ * All the data must be present. If that is not possible, use the
+ * png_write_chunk_start(), png_write_chunk_data(), and png_write_chunk_end()
+ * functions instead.
+ */
+static void
+png_write_complete_chunk(png_structrp png_ptr, png_uint_32 chunk_name,
+ png_const_bytep data, png_size_t length)
+{
+ if (png_ptr == NULL)
+ return;
+
+ /* On 64 bit architectures 'length' may not fit in a png_uint_32. */
+ if (length > PNG_UINT_31_MAX)
+ png_error(png_ptr, "length exceeds PNG maxima");
+
+ png_write_chunk_header(png_ptr, chunk_name, (png_uint_32)length);
+ png_write_chunk_data(png_ptr, data, length);
+ png_write_chunk_end(png_ptr);
+}
+
+/* This is the API that calls the internal function above. */
+void PNGAPI
+png_write_chunk(png_structrp png_ptr, png_const_bytep chunk_string,
+ png_const_bytep data, png_size_t length)
+{
+ png_write_complete_chunk(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), data,
+ length);
+}
+
+/* This is used below to find the size of an image to pass to png_deflate_claim,
+ * so it only needs to be accurate if the size is less than 16384 bytes (the
+ * point at which a lower LZ window size can be used.)
+ */
+static png_alloc_size_t
+png_image_size(png_structrp png_ptr)
+{
+ /* Only return sizes up to the maximum of a png_uint_32, do this by limiting
+ * the width and height used to 15 bits.
+ */
+ png_uint_32 h = png_ptr->height;
+
+ if (png_ptr->rowbytes < 32768 && h < 32768)
+ {
+ if (png_ptr->interlaced)
+ {
+ /* Interlacing makes the image larger because of the replication of
+ * both the filter byte and the padding to a byte boundary.
+ */
+ png_uint_32 w = png_ptr->width;
+ unsigned int pd = png_ptr->pixel_depth;
+ png_alloc_size_t cb_base;
+ int pass;
+
+ for (cb_base=0, pass=0; pass<=6; ++pass)
+ {
+ png_uint_32 pw = PNG_PASS_COLS(w, pass);
+
+ if (pw > 0)
+ cb_base += (PNG_ROWBYTES(pd, pw)+1) * PNG_PASS_ROWS(h, pass);
+ }
+
+ return cb_base;
+ }
+
+ else
+ return (png_ptr->rowbytes+1) * h;
+ }
+
+ else
+ return 0xffffffffU;
+}
+
+#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
+ /* This is the code to hack the first two bytes of the deflate stream (the
+ * deflate header) to correct the windowBits value to match the actual data
+ * size. Note that the second argument is the *uncompressed* size but the
+ * first argument is the *compressed* data (and it must be deflate
+ * compressed.)
+ */
+static void
+optimize_cmf(png_bytep data, png_alloc_size_t data_size)
+{
+ /* Optimize the CMF field in the zlib stream. The resultant zlib stream is
+ * still compliant to the stream specification.
+ */
+ if (data_size <= 16384) /* else windowBits must be 15 */
+ {
+ unsigned int z_cmf = data[0]; /* zlib compression method and flags */
+
+ if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70)
+ {
+ unsigned int z_cinfo;
+ unsigned int half_z_window_size;
+
+ z_cinfo = z_cmf >> 4;
+ half_z_window_size = 1U << (z_cinfo + 7);
+
+ if (data_size <= half_z_window_size) /* else no change */
+ {
+ unsigned int tmp;
+
+ do
+ {
+ half_z_window_size >>= 1;
+ --z_cinfo;
+ }
+ while (z_cinfo > 0 && data_size <= half_z_window_size);
+
+ z_cmf = (z_cmf & 0x0f) | (z_cinfo << 4);
+
+ data[0] = (png_byte)z_cmf;
+ tmp = data[1] & 0xe0;
+ tmp += 0x1f - ((z_cmf << 8) + tmp) % 0x1f;
+ data[1] = (png_byte)tmp;
+ }
+ }
+ }
+}
+#else
+# define optimize_cmf(dp,dl) ((void)0)
+#endif /* PNG_WRITE_OPTIMIZE_CMF_SUPPORTED */
+
+/* Initialize the compressor for the appropriate type of compression. */
+static int
+png_deflate_claim(png_structrp png_ptr, png_uint_32 owner,
+ png_alloc_size_t data_size)
+{
+ if (png_ptr->zowner != 0)
+ {
+ char msg[64];
+
+ PNG_STRING_FROM_CHUNK(msg, owner);
+ msg[4] = ':';
+ msg[5] = ' ';
+ PNG_STRING_FROM_CHUNK(msg+6, png_ptr->zowner);
+ /* So the message that results is "<chunk> using zstream"; this is an
+ * internal error, but is very useful for debugging. i18n requirements
+ * are minimal.
+ */
+ (void)png_safecat(msg, (sizeof msg), 10, " using zstream");
+# if PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC
+ png_warning(png_ptr, msg);
+
+ /* Attempt sane error recovery */
+ if (png_ptr->zowner == png_IDAT) /* don't steal from IDAT */
+ {
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("in use by IDAT");
+ return Z_STREAM_ERROR;
+ }
+
+ png_ptr->zowner = 0;
+# else
+ png_error(png_ptr, msg);
+# endif
+ }
+
+ {
+ int level = png_ptr->zlib_level;
+ int method = png_ptr->zlib_method;
+ int windowBits = png_ptr->zlib_window_bits;
+ int memLevel = png_ptr->zlib_mem_level;
+ int strategy; /* set below */
+ int ret; /* zlib return code */
+
+ if (owner == png_IDAT)
+ {
+ if (png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_STRATEGY)
+ strategy = png_ptr->zlib_strategy;
+
+ else if (png_ptr->do_filter != PNG_FILTER_NONE)
+ strategy = PNG_Z_DEFAULT_STRATEGY;
+
+ else
+ strategy = PNG_Z_DEFAULT_NOFILTER_STRATEGY;
+ }
+
+ else
+ {
+# ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+ level = png_ptr->zlib_text_level;
+ method = png_ptr->zlib_text_method;
+ windowBits = png_ptr->zlib_text_window_bits;
+ memLevel = png_ptr->zlib_text_mem_level;
+ strategy = png_ptr->zlib_text_strategy;
+# else
+ /* If customization is not supported the values all come from the
+ * IDAT values except for the strategy, which is fixed to the
+ * default. (This is the pre-1.6.0 behavior too, although it was
+ * implemented in a very different way.)
+ */
+ strategy = Z_DEFAULT_STRATEGY;
+# endif
+ }
+
+ /* Adjust 'windowBits' down if larger than 'data_size'; to stop this
+ * happening just pass 32768 as the data_size parameter. Notice that zlib
+ * requires an extra 262 bytes in the window in addition to the data to be
+ * able to see the whole of the data, so if data_size+262 takes us to the
+ * next windowBits size we need to fix up the value later. (Because even
+ * though deflate needs the extra window, inflate does not!)
+ */
+ if (data_size <= 16384)
+ {
+ /* IMPLEMENTATION NOTE: this 'half_window_size' stuff is only here to
+ * work round a Microsoft Visual C misbehavior which, contrary to C-90,
+ * widens the result of the following shift to 64-bits if (and,
+ * apparently, only if) it is used in a test.
+ */
+ unsigned int half_window_size = 1U << (windowBits-1);
+
+ while (data_size + 262 <= half_window_size)
+ {
+ half_window_size >>= 1;
+ --windowBits;
+ }
+ }
+
+ /* Check against the previous initialized values, if any. */
+ if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) &&
+ (png_ptr->zlib_set_level != level ||
+ png_ptr->zlib_set_method != method ||
+ png_ptr->zlib_set_window_bits != windowBits ||
+ png_ptr->zlib_set_mem_level != memLevel ||
+ png_ptr->zlib_set_strategy != strategy))
+ {
+ if (deflateEnd(&png_ptr->zstream) != Z_OK)
+ png_warning(png_ptr, "deflateEnd failed (ignored)");
+
+ png_ptr->flags &= ~PNG_FLAG_ZSTREAM_INITIALIZED;
+ }
+
+ /* For safety clear out the input and output pointers (currently zlib
+ * doesn't use them on Init, but it might in the future).
+ */
+ png_ptr->zstream.next_in = NULL;
+ png_ptr->zstream.avail_in = 0;
+ png_ptr->zstream.next_out = NULL;
+ png_ptr->zstream.avail_out = 0;
+
+ /* Now initialize if required, setting the new parameters, otherwise just
+ * to a simple reset to the previous parameters.
+ */
+ if (png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED)
+ ret = deflateReset(&png_ptr->zstream);
+
+ else
+ {
+ ret = deflateInit2(&png_ptr->zstream, level, method, windowBits,
+ memLevel, strategy);
+
+ if (ret == Z_OK)
+ png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
+ }
+
+ /* The return code is from either deflateReset or deflateInit2; they have
+ * pretty much the same set of error codes.
+ */
+ if (ret == Z_OK)
+ png_ptr->zowner = owner;
+
+ else
+ png_zstream_error(png_ptr, ret);
+
+ return ret;
+ }
+}
+
+/* Clean up (or trim) a linked list of compression buffers. */
+void /* PRIVATE */
+png_free_buffer_list(png_structrp png_ptr, png_compression_bufferp *listp)
+{
+ png_compression_bufferp list = *listp;
+
+ if (list != NULL)
+ {
+ *listp = NULL;
+
+ do
+ {
+ png_compression_bufferp next = list->next;
+
+ png_free(png_ptr, list);
+ list = next;
+ }
+ while (list != NULL);
+ }
+}
+
+#ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
+/* This pair of functions encapsulates the operation of (a) compressing a
+ * text string, and (b) issuing it later as a series of chunk data writes.
+ * The compression_state structure is shared context for these functions
+ * set up by the caller to allow access to the relevant local variables.
+ *
+ * compression_buffer (new in 1.6.0) is just a linked list of zbuffer_size
+ * temporary buffers. From 1.6.0 it is retained in png_struct so that it will
+ * be correctly freed in the event of a write error (previous implementations
+ * just leaked memory.)
+ */
+typedef struct
+{
+ png_const_bytep input; /* The uncompressed input data */
+ png_alloc_size_t input_len; /* Its length */
+ png_uint_32 output_len; /* Final compressed length */
+ png_byte output[1024]; /* First block of output */
+} compression_state;
+
+static void
+png_text_compress_init(compression_state *comp, png_const_bytep input,
+ png_alloc_size_t input_len)
+{
+ comp->input = input;
+ comp->input_len = input_len;
+ comp->output_len = 0;
+}
+
+/* Compress the data in the compression state input */
+static int
+png_text_compress(png_structrp png_ptr, png_uint_32 chunk_name,
+ compression_state *comp, png_uint_32 prefix_len)
+{
+ int ret;
+
+ /* To find the length of the output it is necessary to first compress the
+ * input, the result is buffered rather than using the two-pass algorithm
+ * that is used on the inflate side; deflate is assumed to be slower and a
+ * PNG writer is assumed to have more memory available than a PNG reader.
+ *
+ * IMPLEMENTATION NOTE: the zlib API deflateBound() can be used to find an
+ * upper limit on the output size, but it is always bigger than the input
+ * size so it is likely to be more efficient to use this linked-list
+ * approach.
+ */
+ ret = png_deflate_claim(png_ptr, chunk_name, comp->input_len);
+
+ if (ret != Z_OK)
+ return ret;
+
+ /* Set up the compression buffers, we need a loop here to avoid overflowing a
+ * uInt. Use ZLIB_IO_MAX to limit the input. The output is always limited
+ * by the output buffer size, so there is no need to check that. Since this
+ * is ANSI-C we know that an 'int', hence a uInt, is always at least 16 bits
+ * in size.
+ */
+ {
+ png_compression_bufferp *end = &png_ptr->zbuffer_list;
+ png_alloc_size_t input_len = comp->input_len; /* may be zero! */
+ png_uint_32 output_len;
+
+ /* zlib updates these for us: */
+ png_ptr->zstream.next_in = PNGZ_INPUT_CAST(comp->input);
+ png_ptr->zstream.avail_in = 0; /* Set below */
+ png_ptr->zstream.next_out = comp->output;
+ png_ptr->zstream.avail_out = (sizeof comp->output);
+
+ output_len = png_ptr->zstream.avail_out;
+
+ do
+ {
+ uInt avail_in = ZLIB_IO_MAX;
+
+ if (avail_in > input_len)
+ avail_in = (uInt)input_len;
+
+ input_len -= avail_in;
+
+ png_ptr->zstream.avail_in = avail_in;
+
+ if (png_ptr->zstream.avail_out == 0)
+ {
+ png_compression_buffer *next;
+
+ /* Chunk data is limited to 2^31 bytes in length, so the prefix
+ * length must be counted here.
+ */
+ if (output_len + prefix_len > PNG_UINT_31_MAX)
+ {
+ ret = Z_MEM_ERROR;
+ break;
+ }
+
+ /* Need a new (malloc'ed) buffer, but there may be one present
+ * already.
+ */
+ next = *end;
+ if (next == NULL)
+ {
+ next = png_voidcast(png_compression_bufferp, png_malloc_base
+ (png_ptr, PNG_COMPRESSION_BUFFER_SIZE(png_ptr)));
+
+ if (next == NULL)
+ {
+ ret = Z_MEM_ERROR;
+ break;
+ }
+
+ /* Link in this buffer (so that it will be freed later) */
+ next->next = NULL;
+ *end = next;
+ }
+
+ png_ptr->zstream.next_out = next->output;
+ png_ptr->zstream.avail_out = png_ptr->zbuffer_size;
+ output_len += png_ptr->zstream.avail_out;
+
+ /* Move 'end' to the next buffer pointer. */
+ end = &next->next;
+ }
+
+ /* Compress the data */
+ ret = deflate(&png_ptr->zstream,
+ input_len > 0 ? Z_NO_FLUSH : Z_FINISH);
+
+ /* Claw back input data that was not consumed (because avail_in is
+ * reset above every time round the loop).
+ */
+ input_len += png_ptr->zstream.avail_in;
+ png_ptr->zstream.avail_in = 0; /* safety */
+ }
+ while (ret == Z_OK);
+
+ /* There may be some space left in the last output buffer, this needs to
+ * be subtracted from output_len.
+ */
+ output_len -= png_ptr->zstream.avail_out;
+ png_ptr->zstream.avail_out = 0; /* safety */
+ comp->output_len = output_len;
+
+ /* Now double check the output length, put in a custom message if it is
+ * too long. Otherwise ensure the z_stream::msg pointer is set to
+ * something.
+ */
+ if (output_len + prefix_len >= PNG_UINT_31_MAX)
+ {
+ png_ptr->zstream.msg = PNGZ_MSG_CAST("compressed data too long");
+ ret = Z_MEM_ERROR;
+ }
+
+ else
+ png_zstream_error(png_ptr, ret);
+
+ /* Reset zlib for another zTXt/iTXt or image data */
+ png_ptr->zowner = 0;
+
+ /* The only success case is Z_STREAM_END, input_len must be 0, if not this
+ * is an internal error.
+ */
+ if (ret == Z_STREAM_END && input_len == 0)
+ {
+ /* Fix up the deflate header, if required */
+ optimize_cmf(comp->output, comp->input_len);
+
+ /* But Z_OK is returned, not Z_STREAM_END; this allows the claim
+ * function above to return Z_STREAM_END on an error (though it never
+ * does in the current versions of zlib.)
+ */
+ return Z_OK;
+ }
+
+ else
+ return ret;
+ }
+}
+
+/* Ship the compressed text out via chunk writes */
+static void
+png_write_compressed_data_out(png_structrp png_ptr, compression_state *comp)
+{
+ png_uint_32 output_len = comp->output_len;
+ png_const_bytep output = comp->output;
+ png_uint_32 avail = (sizeof comp->output);
+ png_compression_buffer *next = png_ptr->zbuffer_list;
+
+ for (;;)
+ {
+ if (avail > output_len)
+ avail = output_len;
+
+ png_write_chunk_data(png_ptr, output, avail);
+
+ output_len -= avail;
+
+ if (output_len == 0 || next == NULL)
+ break;
+
+ avail = png_ptr->zbuffer_size;
+ output = next->output;
+ next = next->next;
+ }
+
+ /* This is an internal error; 'next' must have been NULL! */
+ if (output_len > 0)
+ png_error(png_ptr, "error writing ancillary chunked compressed data");
+}
+#endif /* PNG_WRITE_COMPRESSED_TEXT_SUPPORTED */
+
+#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \
+ defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
+/* Check that the tEXt or zTXt keyword is valid per PNG 1.0 specification,
+ * and if invalid, correct the keyword rather than discarding the entire
+ * chunk. The PNG 1.0 specification requires keywords 1-79 characters in
+ * length, forbids leading or trailing whitespace, multiple internal spaces,
+ * and the non-break space (0x80) from ISO 8859-1. Returns keyword length.
+ *
+ * The 'new_key' buffer must be 80 characters in size (for the keyword plus a
+ * trailing '\0'). If this routine returns 0 then there was no keyword, or a
+ * valid one could not be generated, and the caller must png_error.
+ */
+static png_uint_32
+png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
+{
+ png_const_charp orig_key = key;
+ png_uint_32 key_len = 0;
+ int bad_character = 0;
+ int space = 1;
+
+ png_debug(1, "in png_check_keyword");
+
+ if (key == NULL)
+ {
+ *new_key = 0;
+ return 0;
+ }
+
+ while (*key && key_len < 79)
+ {
+ png_byte ch = (png_byte)(0xff & *key++);
+
+ if ((ch > 32 && ch <= 126) || (ch >= 161 /*&& ch <= 255*/))
+ *new_key++ = ch, ++key_len, space = 0;
+
+ else if (!space)
+ {
+ /* A space or an invalid character when one wasn't seen immediately
+ * before; output just a space.
+ */
+ *new_key++ = 32, ++key_len, space = 1;
+
+ /* If the character was not a space then it is invalid. */
+ if (ch != 32)
+ bad_character = ch;
+ }
+
+ else if (!bad_character)
+ bad_character = ch; /* just skip it, record the first error */
+ }
+
+ if (key_len > 0 && space) /* trailing space */
+ {
+ --key_len, --new_key;
+ if (!bad_character)
+ bad_character = 32;
+ }
+
+ /* Terminate the keyword */
+ *new_key = 0;
+
+ if (key_len == 0)
+ return 0;
+
+ /* Try to only output one warning per keyword: */
+ if (*key) /* keyword too long */
+ png_warning(png_ptr, "keyword truncated");
+
+ else if (bad_character)
+ {
+ PNG_WARNING_PARAMETERS(p)
+
+ png_warning_parameter(p, 1, orig_key);
+ png_warning_parameter_signed(p, 2, PNG_NUMBER_FORMAT_02x, bad_character);
+
+ png_formatted_warning(png_ptr, p, "keyword \"@1\": bad character '0x@2'");
+ }
+
+ return key_len;
+}
+#endif
+
+/* Write the IHDR chunk, and update the png_struct with the necessary
+ * information. Note that the rest of this code depends upon this
+ * information being correct.
+ */
+void /* PRIVATE */
+png_write_IHDR(png_structrp png_ptr, png_uint_32 width, png_uint_32 height,
+ int bit_depth, int color_type, int compression_type, int filter_type,
+ int interlace_type)
+{
+ png_byte buf[13]; /* Buffer to store the IHDR info */
+
+ png_debug(1, "in png_write_IHDR");
+
+ /* Check that we have valid input data from the application info */
+ switch (color_type)
+ {
+ case PNG_COLOR_TYPE_GRAY:
+ switch (bit_depth)
+ {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ case 16:
+#endif
+ png_ptr->channels = 1; break;
+
+ default:
+ png_error(png_ptr,
+ "Invalid bit depth for grayscale image");
+ }
+ break;
+
+ case PNG_COLOR_TYPE_RGB:
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ if (bit_depth != 8 && bit_depth != 16)
+#else
+ if (bit_depth != 8)
+#endif
+ png_error(png_ptr, "Invalid bit depth for RGB image");
+
+ png_ptr->channels = 3;
+ break;
+
+ case PNG_COLOR_TYPE_PALETTE:
+ switch (bit_depth)
+ {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ png_ptr->channels = 1;
+ break;
+
+ default:
+ png_error(png_ptr, "Invalid bit depth for paletted image");
+ }
+ break;
+
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ if (bit_depth != 8 && bit_depth != 16)
+ png_error(png_ptr, "Invalid bit depth for grayscale+alpha image");
+
+ png_ptr->channels = 2;
+ break;
+
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ if (bit_depth != 8 && bit_depth != 16)
+#else
+ if (bit_depth != 8)
+#endif
+ png_error(png_ptr, "Invalid bit depth for RGBA image");
+
+ png_ptr->channels = 4;
+ break;
+
+ default:
+ png_error(png_ptr, "Invalid image color type specified");
+ }
+
+ if (compression_type != PNG_COMPRESSION_TYPE_BASE)
+ {
+ png_warning(png_ptr, "Invalid compression type specified");
+ compression_type = PNG_COMPRESSION_TYPE_BASE;
+ }
+
+ /* Write filter_method 64 (intrapixel differencing) only if
+ * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
+ * 2. Libpng did not write a PNG signature (this filter_method is only
+ * used in PNG datastreams that are embedded in MNG datastreams) and
+ * 3. The application called png_permit_mng_features with a mask that
+ * included PNG_FLAG_MNG_FILTER_64 and
+ * 4. The filter_method is 64 and
+ * 5. The color_type is RGB or RGBA
+ */
+ if (
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
+ (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA) &&
+ (filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
+#endif
+ filter_type != PNG_FILTER_TYPE_BASE)
+ {
+ png_warning(png_ptr, "Invalid filter type specified");
+ filter_type = PNG_FILTER_TYPE_BASE;
+ }
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ if (interlace_type != PNG_INTERLACE_NONE &&
+ interlace_type != PNG_INTERLACE_ADAM7)
+ {
+ png_warning(png_ptr, "Invalid interlace type specified");
+ interlace_type = PNG_INTERLACE_ADAM7;
+ }
+#else
+ interlace_type=PNG_INTERLACE_NONE;
+#endif
+
+ /* Save the relevent information */
+ png_ptr->bit_depth = (png_byte)bit_depth;
+ png_ptr->color_type = (png_byte)color_type;
+ png_ptr->interlaced = (png_byte)interlace_type;
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ png_ptr->filter_type = (png_byte)filter_type;
+#endif
+ png_ptr->compression_type = (png_byte)compression_type;
+ png_ptr->width = width;
+ png_ptr->height = height;
+
+ png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels);
+ png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width);
+ /* Set the usr info, so any transformations can modify it */
+ png_ptr->usr_width = png_ptr->width;
+ png_ptr->usr_bit_depth = png_ptr->bit_depth;
+ png_ptr->usr_channels = png_ptr->channels;
+
+ /* Pack the header information into the buffer */
+ png_save_uint_32(buf, width);
+ png_save_uint_32(buf + 4, height);
+ buf[8] = (png_byte)bit_depth;
+ buf[9] = (png_byte)color_type;
+ buf[10] = (png_byte)compression_type;
+ buf[11] = (png_byte)filter_type;
+ buf[12] = (png_byte)interlace_type;
+
+ /* Write the chunk */
+ png_write_complete_chunk(png_ptr, png_IHDR, buf, (png_size_t)13);
+
+ if (!(png_ptr->do_filter))
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE ||
+ png_ptr->bit_depth < 8)
+ png_ptr->do_filter = PNG_FILTER_NONE;
+
+ else
+ png_ptr->do_filter = PNG_ALL_FILTERS;
+ }
+
+ png_ptr->mode = PNG_HAVE_IHDR; /* not READY_FOR_ZTXT */
+}
+
+/* Write the palette. We are careful not to trust png_color to be in the
+ * correct order for PNG, so people can redefine it to any convenient
+ * structure.
+ */
+void /* PRIVATE */
+png_write_PLTE(png_structrp png_ptr, png_const_colorp palette,
+ png_uint_32 num_pal)
+{
+ png_uint_32 i;
+ png_const_colorp pal_ptr;
+ png_byte buf[3];
+
+ png_debug(1, "in png_write_PLTE");
+
+ if ((
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ !(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
+#endif
+ num_pal == 0) || num_pal > 256)
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ png_error(png_ptr, "Invalid number of colors in palette");
+ }
+
+ else
+ {
+ png_warning(png_ptr, "Invalid number of colors in palette");
+ return;
+ }
+ }
+
+ if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
+ {
+ png_warning(png_ptr,
+ "Ignoring request to write a PLTE chunk in grayscale PNG");
+
+ return;
+ }
+
+ png_ptr->num_palette = (png_uint_16)num_pal;
+ png_debug1(3, "num_palette = %d", png_ptr->num_palette);
+
+ png_write_chunk_header(png_ptr, png_PLTE, (png_uint_32)(num_pal * 3));
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+
+ for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++)
+ {
+ buf[0] = pal_ptr->red;
+ buf[1] = pal_ptr->green;
+ buf[2] = pal_ptr->blue;
+ png_write_chunk_data(png_ptr, buf, (png_size_t)3);
+ }
+
+#else
+ /* This is a little slower but some buggy compilers need to do this
+ * instead
+ */
+ pal_ptr=palette;
+
+ for (i = 0; i < num_pal; i++)
+ {
+ buf[0] = pal_ptr[i].red;
+ buf[1] = pal_ptr[i].green;
+ buf[2] = pal_ptr[i].blue;
+ png_write_chunk_data(png_ptr, buf, (png_size_t)3);
+ }
+
+#endif
+ png_write_chunk_end(png_ptr);
+ png_ptr->mode |= PNG_HAVE_PLTE;
+}
+
+/* This is similar to png_text_compress, above, except that it does not require
+ * all of the data at once and, instead of buffering the compressed result,
+ * writes it as IDAT chunks. Unlike png_text_compress it *can* png_error out
+ * because it calls the write interface. As a result it does its own error
+ * reporting and does not return an error code. In the event of error it will
+ * just call png_error. The input data length may exceed 32-bits. The 'flush'
+ * parameter is exactly the same as that to deflate, with the following
+ * meanings:
+ *
+ * Z_NO_FLUSH: normal incremental output of compressed data
+ * Z_SYNC_FLUSH: do a SYNC_FLUSH, used by png_write_flush
+ * Z_FINISH: this is the end of the input, do a Z_FINISH and clean up
+ *
+ * The routine manages the acquire and release of the png_ptr->zstream by
+ * checking and (at the end) clearing png_ptr->zowner, it does some sanity
+ * checks on the 'mode' flags while doing this.
+ */
+void /* PRIVATE */
+png_compress_IDAT(png_structrp png_ptr, png_const_bytep input,
+ png_alloc_size_t input_len, int flush)
+{
+ if (png_ptr->zowner != png_IDAT)
+ {
+ /* First time. Ensure we have a temporary buffer for compression and
+ * trim the buffer list if it has more than one entry to free memory.
+ * If 'WRITE_COMPRESSED_TEXT' is not set the list will never have been
+ * created at this point, but the check here is quick and safe.
+ */
+ if (png_ptr->zbuffer_list == NULL)
+ {
+ png_ptr->zbuffer_list = png_voidcast(png_compression_bufferp,
+ png_malloc(png_ptr, PNG_COMPRESSION_BUFFER_SIZE(png_ptr)));
+ png_ptr->zbuffer_list->next = NULL;
+ }
+
+ else
+ png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list->next);
+
+ /* It is a terminal error if we can't claim the zstream. */
+ if (png_deflate_claim(png_ptr, png_IDAT, png_image_size(png_ptr)) != Z_OK)
+ png_error(png_ptr, png_ptr->zstream.msg);
+
+ /* The output state is maintained in png_ptr->zstream, so it must be
+ * initialized here after the claim.
+ */
+ png_ptr->zstream.next_out = png_ptr->zbuffer_list->output;
+ png_ptr->zstream.avail_out = png_ptr->zbuffer_size;
+ }
+
+ /* Now loop reading and writing until all the input is consumed or an error
+ * terminates the operation. The _out values are maintained across calls to
+ * this function, but the input must be reset each time.
+ */
+ png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input);
+ png_ptr->zstream.avail_in = 0; /* set below */
+ for (;;)
+ {
+ int ret;
+
+ /* INPUT: from the row data */
+ uInt avail = ZLIB_IO_MAX;
+
+ if (avail > input_len)
+ avail = (uInt)input_len; /* safe because of the check */
+
+ png_ptr->zstream.avail_in = avail;
+ input_len -= avail;
+
+ ret = deflate(&png_ptr->zstream, input_len > 0 ? Z_NO_FLUSH : flush);
+
+ /* Include as-yet unconsumed input */
+ input_len += png_ptr->zstream.avail_in;
+ png_ptr->zstream.avail_in = 0;
+
+ /* OUTPUT: write complete IDAT chunks when avail_out drops to zero, note
+ * that these two zstream fields are preserved across the calls, therefore
+ * there is no need to set these up on entry to the loop.
+ */
+ if (png_ptr->zstream.avail_out == 0)
+ {
+ png_bytep data = png_ptr->zbuffer_list->output;
+ uInt size = png_ptr->zbuffer_size;
+
+ /* Write an IDAT containing the data then reset the buffer. The
+ * first IDAT may need deflate header optimization.
+ */
+# ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
+ if (!(png_ptr->mode & PNG_HAVE_IDAT) &&
+ png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE)
+ optimize_cmf(data, png_image_size(png_ptr));
+# endif
+
+ png_write_complete_chunk(png_ptr, png_IDAT, data, size);
+ png_ptr->mode |= PNG_HAVE_IDAT;
+
+ png_ptr->zstream.next_out = data;
+ png_ptr->zstream.avail_out = size;
+
+ /* For SYNC_FLUSH or FINISH it is essential to keep calling zlib with
+ * the same flush parameter until it has finished output, for NO_FLUSH
+ * it doesn't matter.
+ */
+ if (ret == Z_OK && flush != Z_NO_FLUSH)
+ continue;
+ }
+
+ /* The order of these checks doesn't matter much; it just effect which
+ * possible error might be detected if multiple things go wrong at once.
+ */
+ if (ret == Z_OK) /* most likely return code! */
+ {
+ /* If all the input has been consumed then just return. If Z_FINISH
+ * was used as the flush parameter something has gone wrong if we get
+ * here.
+ */
+ if (input_len == 0)
+ {
+ if (flush == Z_FINISH)
+ png_error(png_ptr, "Z_OK on Z_FINISH with output space");
+
+ return;
+ }
+ }
+
+ else if (ret == Z_STREAM_END && flush == Z_FINISH)
+ {
+ /* This is the end of the IDAT data; any pending output must be
+ * flushed. For small PNG files we may still be at the beginning.
+ */
+ png_bytep data = png_ptr->zbuffer_list->output;
+ uInt size = png_ptr->zbuffer_size - png_ptr->zstream.avail_out;
+
+# ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
+ if (!(png_ptr->mode & PNG_HAVE_IDAT) &&
+ png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE)
+ optimize_cmf(data, png_image_size(png_ptr));
+# endif
+
+ png_write_complete_chunk(png_ptr, png_IDAT, data, size);
+ png_ptr->zstream.avail_out = 0;
+ png_ptr->zstream.next_out = NULL;
+ png_ptr->mode |= PNG_HAVE_IDAT | PNG_AFTER_IDAT;
+
+ png_ptr->zowner = 0; /* Release the stream */
+ return;
+ }
+
+ else
+ {
+ /* This is an error condition. */
+ png_zstream_error(png_ptr, ret);
+ png_error(png_ptr, png_ptr->zstream.msg);
+ }
+ }
+}
+
+/* Write an IEND chunk */
+void /* PRIVATE */
+png_write_IEND(png_structrp png_ptr)
+{
+ png_debug(1, "in png_write_IEND");
+
+ png_write_complete_chunk(png_ptr, png_IEND, NULL, (png_size_t)0);
+ png_ptr->mode |= PNG_HAVE_IEND;
+}
+
+#ifdef PNG_WRITE_gAMA_SUPPORTED
+/* Write a gAMA chunk */
+void /* PRIVATE */
+png_write_gAMA_fixed(png_structrp png_ptr, png_fixed_point file_gamma)
+{
+ png_byte buf[4];
+
+ png_debug(1, "in png_write_gAMA");
+
+ /* file_gamma is saved in 1/100,000ths */
+ png_save_uint_32(buf, (png_uint_32)file_gamma);
+ png_write_complete_chunk(png_ptr, png_gAMA, buf, (png_size_t)4);
+}
+#endif
+
+#ifdef PNG_WRITE_sRGB_SUPPORTED
+/* Write a sRGB chunk */
+void /* PRIVATE */
+png_write_sRGB(png_structrp png_ptr, int srgb_intent)
+{
+ png_byte buf[1];
+
+ png_debug(1, "in png_write_sRGB");
+
+ if (srgb_intent >= PNG_sRGB_INTENT_LAST)
+ png_warning(png_ptr,
+ "Invalid sRGB rendering intent specified");
+
+ buf[0]=(png_byte)srgb_intent;
+ png_write_complete_chunk(png_ptr, png_sRGB, buf, (png_size_t)1);
+}
+#endif
+
+#ifdef PNG_WRITE_iCCP_SUPPORTED
+/* Write an iCCP chunk */
+void /* PRIVATE */
+png_write_iCCP(png_structrp png_ptr, png_const_charp name,
+ png_const_bytep profile)
+{
+ png_uint_32 name_len;
+ png_uint_32 profile_len;
+ png_byte new_name[81]; /* 1 byte for the compression byte */
+ compression_state comp;
+
+ png_debug(1, "in png_write_iCCP");
+
+ /* These are all internal problems: the profile should have been checked
+ * before when it was stored.
+ */
+ if (profile == NULL)
+ png_error(png_ptr, "No profile for iCCP chunk"); /* internal error */
+
+ profile_len = png_get_uint_32(profile);
+
+ if (profile_len < 132)
+ png_error(png_ptr, "ICC profile too short");
+
+ if (profile_len & 0x03)
+ png_error(png_ptr, "ICC profile length invalid (not a multiple of 4)");
+
+ {
+ png_uint_32 embedded_profile_len = png_get_uint_32(profile);
+
+ if (profile_len != embedded_profile_len)
+ png_error(png_ptr, "Profile length does not match profile");
+ }
+
+ name_len = png_check_keyword(png_ptr, name, new_name);
+
+ if (name_len == 0)
+ png_error(png_ptr, "iCCP: invalid keyword");
+
+ new_name[++name_len] = PNG_COMPRESSION_TYPE_BASE;
+
+ /* Make sure we include the NULL after the name and the compression type */
+ ++name_len;
+
+ png_text_compress_init(&comp, profile, profile_len);
+
+ /* Allow for keyword terminator and compression byte */
+ if (png_text_compress(png_ptr, png_iCCP, &comp, name_len) != Z_OK)
+ png_error(png_ptr, png_ptr->zstream.msg);
+
+ png_write_chunk_header(png_ptr, png_iCCP, name_len + comp.output_len);
+
+ png_write_chunk_data(png_ptr, new_name, name_len);
+
+ png_write_compressed_data_out(png_ptr, &comp);
+
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_sPLT_SUPPORTED
+/* Write a sPLT chunk */
+void /* PRIVATE */
+png_write_sPLT(png_structrp png_ptr, png_const_sPLT_tp spalette)
+{
+ png_uint_32 name_len;
+ png_byte new_name[80];
+ png_byte entrybuf[10];
+ png_size_t entry_size = (spalette->depth == 8 ? 6 : 10);
+ png_size_t palette_size = entry_size * spalette->nentries;
+ png_sPLT_entryp ep;
+#ifndef PNG_POINTER_INDEXING_SUPPORTED
+ int i;
+#endif
+
+ png_debug(1, "in png_write_sPLT");
+
+ name_len = png_check_keyword(png_ptr, spalette->name, new_name);
+
+ if (name_len == 0)
+ png_error(png_ptr, "sPLT: invalid keyword");
+
+ /* Make sure we include the NULL after the name */
+ png_write_chunk_header(png_ptr, png_sPLT,
+ (png_uint_32)(name_len + 2 + palette_size));
+
+ png_write_chunk_data(png_ptr, (png_bytep)new_name,
+ (png_size_t)(name_len + 1));
+
+ png_write_chunk_data(png_ptr, &spalette->depth, (png_size_t)1);
+
+ /* Loop through each palette entry, writing appropriately */
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++)
+ {
+ if (spalette->depth == 8)
+ {
+ entrybuf[0] = (png_byte)ep->red;
+ entrybuf[1] = (png_byte)ep->green;
+ entrybuf[2] = (png_byte)ep->blue;
+ entrybuf[3] = (png_byte)ep->alpha;
+ png_save_uint_16(entrybuf + 4, ep->frequency);
+ }
+
+ else
+ {
+ png_save_uint_16(entrybuf + 0, ep->red);
+ png_save_uint_16(entrybuf + 2, ep->green);
+ png_save_uint_16(entrybuf + 4, ep->blue);
+ png_save_uint_16(entrybuf + 6, ep->alpha);
+ png_save_uint_16(entrybuf + 8, ep->frequency);
+ }
+
+ png_write_chunk_data(png_ptr, entrybuf, entry_size);
+ }
+#else
+ ep=spalette->entries;
+ for (i = 0; i>spalette->nentries; i++)
+ {
+ if (spalette->depth == 8)
+ {
+ entrybuf[0] = (png_byte)ep[i].red;
+ entrybuf[1] = (png_byte)ep[i].green;
+ entrybuf[2] = (png_byte)ep[i].blue;
+ entrybuf[3] = (png_byte)ep[i].alpha;
+ png_save_uint_16(entrybuf + 4, ep[i].frequency);
+ }
+
+ else
+ {
+ png_save_uint_16(entrybuf + 0, ep[i].red);
+ png_save_uint_16(entrybuf + 2, ep[i].green);
+ png_save_uint_16(entrybuf + 4, ep[i].blue);
+ png_save_uint_16(entrybuf + 6, ep[i].alpha);
+ png_save_uint_16(entrybuf + 8, ep[i].frequency);
+ }
+
+ png_write_chunk_data(png_ptr, entrybuf, entry_size);
+ }
+#endif
+
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_sBIT_SUPPORTED
+/* Write the sBIT chunk */
+void /* PRIVATE */
+png_write_sBIT(png_structrp png_ptr, png_const_color_8p sbit, int color_type)
+{
+ png_byte buf[4];
+ png_size_t size;
+
+ png_debug(1, "in png_write_sBIT");
+
+ /* Make sure we don't depend upon the order of PNG_COLOR_8 */
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ png_byte maxbits;
+
+ maxbits = (png_byte)(color_type==PNG_COLOR_TYPE_PALETTE ? 8 :
+ png_ptr->usr_bit_depth);
+
+ if (sbit->red == 0 || sbit->red > maxbits ||
+ sbit->green == 0 || sbit->green > maxbits ||
+ sbit->blue == 0 || sbit->blue > maxbits)
+ {
+ png_warning(png_ptr, "Invalid sBIT depth specified");
+ return;
+ }
+
+ buf[0] = sbit->red;
+ buf[1] = sbit->green;
+ buf[2] = sbit->blue;
+ size = 3;
+ }
+
+ else
+ {
+ if (sbit->gray == 0 || sbit->gray > png_ptr->usr_bit_depth)
+ {
+ png_warning(png_ptr, "Invalid sBIT depth specified");
+ return;
+ }
+
+ buf[0] = sbit->gray;
+ size = 1;
+ }
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ if (sbit->alpha == 0 || sbit->alpha > png_ptr->usr_bit_depth)
+ {
+ png_warning(png_ptr, "Invalid sBIT depth specified");
+ return;
+ }
+
+ buf[size++] = sbit->alpha;
+ }
+
+ png_write_complete_chunk(png_ptr, png_sBIT, buf, size);
+}
+#endif
+
+#ifdef PNG_WRITE_cHRM_SUPPORTED
+/* Write the cHRM chunk */
+void /* PRIVATE */
+png_write_cHRM_fixed(png_structrp png_ptr, const png_xy *xy)
+{
+ png_byte buf[32];
+
+ png_debug(1, "in png_write_cHRM");
+
+ /* Each value is saved in 1/100,000ths */
+ png_save_int_32(buf, xy->whitex);
+ png_save_int_32(buf + 4, xy->whitey);
+
+ png_save_int_32(buf + 8, xy->redx);
+ png_save_int_32(buf + 12, xy->redy);
+
+ png_save_int_32(buf + 16, xy->greenx);
+ png_save_int_32(buf + 20, xy->greeny);
+
+ png_save_int_32(buf + 24, xy->bluex);
+ png_save_int_32(buf + 28, xy->bluey);
+
+ png_write_complete_chunk(png_ptr, png_cHRM, buf, 32);
+}
+#endif
+
+#ifdef PNG_WRITE_tRNS_SUPPORTED
+/* Write the tRNS chunk */
+void /* PRIVATE */
+png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
+ png_const_color_16p tran, int num_trans, int color_type)
+{
+ png_byte buf[6];
+
+ png_debug(1, "in png_write_tRNS");
+
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (num_trans <= 0 || num_trans > (int)png_ptr->num_palette)
+ {
+ png_app_warning(png_ptr,
+ "Invalid number of transparent colors specified");
+ return;
+ }
+
+ /* Write the chunk out as it is */
+ png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha,
+ (png_size_t)num_trans);
+ }
+
+ else if (color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ /* One 16 bit value */
+ if (tran->gray >= (1 << png_ptr->bit_depth))
+ {
+ png_app_warning(png_ptr,
+ "Ignoring attempt to write tRNS chunk out-of-range for bit_depth");
+
+ return;
+ }
+
+ png_save_uint_16(buf, tran->gray);
+ png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)2);
+ }
+
+ else if (color_type == PNG_COLOR_TYPE_RGB)
+ {
+ /* Three 16 bit values */
+ png_save_uint_16(buf, tran->red);
+ png_save_uint_16(buf + 2, tran->green);
+ png_save_uint_16(buf + 4, tran->blue);
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]))
+#else
+ if (buf[0] | buf[2] | buf[4])
+#endif
+ {
+ png_app_warning(png_ptr,
+ "Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8");
+ return;
+ }
+
+ png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)6);
+ }
+
+ else
+ {
+ png_app_warning(png_ptr, "Can't write tRNS with an alpha channel");
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_bKGD_SUPPORTED
+/* Write the background chunk */
+void /* PRIVATE */
+png_write_bKGD(png_structrp png_ptr, png_const_color_16p back, int color_type)
+{
+ png_byte buf[6];
+
+ png_debug(1, "in png_write_bKGD");
+
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ (png_ptr->num_palette ||
+ (!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
+#endif
+ back->index >= png_ptr->num_palette)
+ {
+ png_warning(png_ptr, "Invalid background palette index");
+ return;
+ }
+
+ buf[0] = back->index;
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)1);
+ }
+
+ else if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ png_save_uint_16(buf, back->red);
+ png_save_uint_16(buf + 2, back->green);
+ png_save_uint_16(buf + 4, back->blue);
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]))
+#else
+ if (buf[0] | buf[2] | buf[4])
+#endif
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to write 16-bit bKGD chunk when bit_depth is 8");
+
+ return;
+ }
+
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)6);
+ }
+
+ else
+ {
+ if (back->gray >= (1 << png_ptr->bit_depth))
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to write bKGD chunk out-of-range for bit_depth");
+
+ return;
+ }
+
+ png_save_uint_16(buf, back->gray);
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)2);
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_hIST_SUPPORTED
+/* Write the histogram */
+void /* PRIVATE */
+png_write_hIST(png_structrp png_ptr, png_const_uint_16p hist, int num_hist)
+{
+ int i;
+ png_byte buf[3];
+
+ png_debug(1, "in png_write_hIST");
+
+ if (num_hist > (int)png_ptr->num_palette)
+ {
+ png_debug2(3, "num_hist = %d, num_palette = %d", num_hist,
+ png_ptr->num_palette);
+
+ png_warning(png_ptr, "Invalid number of histogram entries specified");
+ return;
+ }
+
+ png_write_chunk_header(png_ptr, png_hIST, (png_uint_32)(num_hist * 2));
+
+ for (i = 0; i < num_hist; i++)
+ {
+ png_save_uint_16(buf, hist[i]);
+ png_write_chunk_data(png_ptr, buf, (png_size_t)2);
+ }
+
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+/* Write a tEXt chunk */
+void /* PRIVATE */
+png_write_tEXt(png_structrp png_ptr, png_const_charp key, png_const_charp text,
+ png_size_t text_len)
+{
+ png_uint_32 key_len;
+ png_byte new_key[80];
+
+ png_debug(1, "in png_write_tEXt");
+
+ key_len = png_check_keyword(png_ptr, key, new_key);
+
+ if (key_len == 0)
+ png_error(png_ptr, "tEXt: invalid keyword");
+
+ if (text == NULL || *text == '\0')
+ text_len = 0;
+
+ else
+ text_len = strlen(text);
+
+ if (text_len > PNG_UINT_31_MAX - (key_len+1))
+ png_error(png_ptr, "tEXt: text too long");
+
+ /* Make sure we include the 0 after the key */
+ png_write_chunk_header(png_ptr, png_tEXt,
+ (png_uint_32)/*checked above*/(key_len + text_len + 1));
+ /*
+ * We leave it to the application to meet PNG-1.0 requirements on the
+ * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of
+ * any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them.
+ * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG.
+ */
+ png_write_chunk_data(png_ptr, new_key, key_len + 1);
+
+ if (text_len)
+ png_write_chunk_data(png_ptr, (png_const_bytep)text, text_len);
+
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+/* Write a compressed text chunk */
+void /* PRIVATE */
+png_write_zTXt(png_structrp png_ptr, png_const_charp key, png_const_charp text,
+ png_size_t text_len, int compression)
+{
+ png_uint_32 key_len;
+ png_byte new_key[81];
+ compression_state comp;
+
+ png_debug(1, "in png_write_zTXt");
+ PNG_UNUSED(text_len) /* Always use strlen */
+
+ if (compression == PNG_TEXT_COMPRESSION_NONE)
+ {
+ png_write_tEXt(png_ptr, key, text, 0);
+ return;
+ }
+
+ if (compression != PNG_TEXT_COMPRESSION_zTXt)
+ png_error(png_ptr, "zTXt: invalid compression type");
+
+ key_len = png_check_keyword(png_ptr, key, new_key);
+
+ if (key_len == 0)
+ png_error(png_ptr, "zTXt: invalid keyword");
+
+ /* Add the compression method and 1 for the keyword separator. */
+ new_key[++key_len] = PNG_COMPRESSION_TYPE_BASE;
+ ++key_len;
+
+ /* Compute the compressed data; do it now for the length */
+ png_text_compress_init(&comp, (png_const_bytep)text,
+ text == NULL ? 0 : strlen(text));
+
+ if (png_text_compress(png_ptr, png_zTXt, &comp, key_len) != Z_OK)
+ png_error(png_ptr, png_ptr->zstream.msg);
+
+ /* Write start of chunk */
+ png_write_chunk_header(png_ptr, png_zTXt, key_len + comp.output_len);
+
+ /* Write key */
+ png_write_chunk_data(png_ptr, new_key, key_len);
+
+ /* Write the compressed data */
+ png_write_compressed_data_out(png_ptr, &comp);
+
+ /* Close the chunk */
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+/* Write an iTXt chunk */
+void /* PRIVATE */
+png_write_iTXt(png_structrp png_ptr, int compression, png_const_charp key,
+ png_const_charp lang, png_const_charp lang_key, png_const_charp text)
+{
+ png_uint_32 key_len, prefix_len;
+ png_size_t lang_len, lang_key_len;
+ png_byte new_key[82];
+ compression_state comp;
+
+ png_debug(1, "in png_write_iTXt");
+
+ key_len = png_check_keyword(png_ptr, key, new_key);
+
+ if (key_len == 0)
+ png_error(png_ptr, "iTXt: invalid keyword");
+
+ /* Set the compression flag */
+ switch (compression)
+ {
+ case PNG_ITXT_COMPRESSION_NONE:
+ case PNG_TEXT_COMPRESSION_NONE:
+ compression = new_key[++key_len] = 0; /* no compression */
+ break;
+
+ case PNG_TEXT_COMPRESSION_zTXt:
+ case PNG_ITXT_COMPRESSION_zTXt:
+ compression = new_key[++key_len] = 1; /* compressed */
+ break;
+
+ default:
+ png_error(png_ptr, "iTXt: invalid compression");
+ }
+
+ new_key[++key_len] = PNG_COMPRESSION_TYPE_BASE;
+ ++key_len; /* for the keywod separator */
+
+ /* We leave it to the application to meet PNG-1.0 requirements on the
+ * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of
+ * any non-Latin-1 characters except for NEWLINE. ISO PNG, however,
+ * specifies that the text is UTF-8 and this really doesn't require any
+ * checking.
+ *
+ * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG.
+ *
+ * TODO: validate the language tag correctly (see the spec.)
+ */
+ if (lang == NULL) lang = ""; /* empty language is valid */
+ lang_len = strlen(lang)+1;
+ if (lang_key == NULL) lang_key = ""; /* may be empty */
+ lang_key_len = strlen(lang_key)+1;
+ if (text == NULL) text = ""; /* may be empty */
+
+ prefix_len = key_len;
+ if (lang_len > PNG_UINT_31_MAX-prefix_len)
+ prefix_len = PNG_UINT_31_MAX;
+ else
+ prefix_len = (png_uint_32)(prefix_len + lang_len);
+
+ if (lang_key_len > PNG_UINT_31_MAX-prefix_len)
+ prefix_len = PNG_UINT_31_MAX;
+ else
+ prefix_len = (png_uint_32)(prefix_len + lang_key_len);
+
+ png_text_compress_init(&comp, (png_const_bytep)text, strlen(text));
+
+ if (compression)
+ {
+ if (png_text_compress(png_ptr, png_iTXt, &comp, prefix_len) != Z_OK)
+ png_error(png_ptr, png_ptr->zstream.msg);
+ }
+
+ else
+ {
+ if (comp.input_len > PNG_UINT_31_MAX-prefix_len)
+ png_error(png_ptr, "iTXt: uncompressed text too long");
+
+ /* So the string will fit in a chunk: */
+ comp.output_len = (png_uint_32)/*SAFE*/comp.input_len;
+ }
+
+ png_write_chunk_header(png_ptr, png_iTXt, comp.output_len + prefix_len);
+
+ png_write_chunk_data(png_ptr, new_key, key_len);
+
+ png_write_chunk_data(png_ptr, (png_const_bytep)lang, lang_len);
+
+ png_write_chunk_data(png_ptr, (png_const_bytep)lang_key, lang_key_len);
+
+ if (compression)
+ png_write_compressed_data_out(png_ptr, &comp);
+
+ else
+ png_write_chunk_data(png_ptr, (png_const_bytep)text, comp.input_len);
+
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_oFFs_SUPPORTED
+/* Write the oFFs chunk */
+void /* PRIVATE */
+png_write_oFFs(png_structrp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
+ int unit_type)
+{
+ png_byte buf[9];
+
+ png_debug(1, "in png_write_oFFs");
+
+ if (unit_type >= PNG_OFFSET_LAST)
+ png_warning(png_ptr, "Unrecognized unit type for oFFs chunk");
+
+ png_save_int_32(buf, x_offset);
+ png_save_int_32(buf + 4, y_offset);
+ buf[8] = (png_byte)unit_type;
+
+ png_write_complete_chunk(png_ptr, png_oFFs, buf, (png_size_t)9);
+}
+#endif
+#ifdef PNG_WRITE_pCAL_SUPPORTED
+/* Write the pCAL chunk (described in the PNG extensions document) */
+void /* PRIVATE */
+png_write_pCAL(png_structrp png_ptr, png_charp purpose, png_int_32 X0,
+ png_int_32 X1, int type, int nparams, png_const_charp units,
+ png_charpp params)
+{
+ png_uint_32 purpose_len;
+ png_size_t units_len, total_len;
+ png_size_tp params_len;
+ png_byte buf[10];
+ png_byte new_purpose[80];
+ int i;
+
+ png_debug1(1, "in png_write_pCAL (%d parameters)", nparams);
+
+ if (type >= PNG_EQUATION_LAST)
+ png_error(png_ptr, "Unrecognized equation type for pCAL chunk");
+
+ purpose_len = png_check_keyword(png_ptr, purpose, new_purpose);
+
+ if (purpose_len == 0)
+ png_error(png_ptr, "pCAL: invalid keyword");
+
+ ++purpose_len; /* terminator */
+
+ png_debug1(3, "pCAL purpose length = %d", (int)purpose_len);
+ units_len = strlen(units) + (nparams == 0 ? 0 : 1);
+ png_debug1(3, "pCAL units length = %d", (int)units_len);
+ total_len = purpose_len + units_len + 10;
+
+ params_len = (png_size_tp)png_malloc(png_ptr,
+ (png_alloc_size_t)(nparams * (sizeof (png_size_t))));
+
+ /* Find the length of each parameter, making sure we don't count the
+ * null terminator for the last parameter.
+ */
+ for (i = 0; i < nparams; i++)
+ {
+ params_len[i] = strlen(params[i]) + (i == nparams - 1 ? 0 : 1);
+ png_debug2(3, "pCAL parameter %d length = %lu", i,
+ (unsigned long)params_len[i]);
+ total_len += params_len[i];
+ }
+
+ png_debug1(3, "pCAL total length = %d", (int)total_len);
+ png_write_chunk_header(png_ptr, png_pCAL, (png_uint_32)total_len);
+ png_write_chunk_data(png_ptr, new_purpose, purpose_len);
+ png_save_int_32(buf, X0);
+ png_save_int_32(buf + 4, X1);
+ buf[8] = (png_byte)type;
+ buf[9] = (png_byte)nparams;
+ png_write_chunk_data(png_ptr, buf, (png_size_t)10);
+ png_write_chunk_data(png_ptr, (png_const_bytep)units, (png_size_t)units_len);
+
+ for (i = 0; i < nparams; i++)
+ {
+ png_write_chunk_data(png_ptr, (png_const_bytep)params[i], params_len[i]);
+ }
+
+ png_free(png_ptr, params_len);
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_sCAL_SUPPORTED
+/* Write the sCAL chunk */
+void /* PRIVATE */
+png_write_sCAL_s(png_structrp png_ptr, int unit, png_const_charp width,
+ png_const_charp height)
+{
+ png_byte buf[64];
+ png_size_t wlen, hlen, total_len;
+
+ png_debug(1, "in png_write_sCAL_s");
+
+ wlen = strlen(width);
+ hlen = strlen(height);
+ total_len = wlen + hlen + 2;
+
+ if (total_len > 64)
+ {
+ png_warning(png_ptr, "Can't write sCAL (buffer too small)");
+ return;
+ }
+
+ buf[0] = (png_byte)unit;
+ memcpy(buf + 1, width, wlen + 1); /* Append the '\0' here */
+ memcpy(buf + wlen + 2, height, hlen); /* Do NOT append the '\0' here */
+
+ png_debug1(3, "sCAL total length = %u", (unsigned int)total_len);
+ png_write_complete_chunk(png_ptr, png_sCAL, buf, total_len);
+}
+#endif
+
+#ifdef PNG_WRITE_pHYs_SUPPORTED
+/* Write the pHYs chunk */
+void /* PRIVATE */
+png_write_pHYs(png_structrp png_ptr, png_uint_32 x_pixels_per_unit,
+ png_uint_32 y_pixels_per_unit,
+ int unit_type)
+{
+ png_byte buf[9];
+
+ png_debug(1, "in png_write_pHYs");
+
+ if (unit_type >= PNG_RESOLUTION_LAST)
+ png_warning(png_ptr, "Unrecognized unit type for pHYs chunk");
+
+ png_save_uint_32(buf, x_pixels_per_unit);
+ png_save_uint_32(buf + 4, y_pixels_per_unit);
+ buf[8] = (png_byte)unit_type;
+
+ png_write_complete_chunk(png_ptr, png_pHYs, buf, (png_size_t)9);
+}
+#endif
+
+#ifdef PNG_WRITE_tIME_SUPPORTED
+/* Write the tIME chunk. Use either png_convert_from_struct_tm()
+ * or png_convert_from_time_t(), or fill in the structure yourself.
+ */
+void /* PRIVATE */
+png_write_tIME(png_structrp png_ptr, png_const_timep mod_time)
+{
+ png_byte buf[7];
+
+ png_debug(1, "in png_write_tIME");
+
+ if (mod_time->month > 12 || mod_time->month < 1 ||
+ mod_time->day > 31 || mod_time->day < 1 ||
+ mod_time->hour > 23 || mod_time->second > 60)
+ {
+ png_warning(png_ptr, "Invalid time specified for tIME chunk");
+ return;
+ }
+
+ png_save_uint_16(buf, mod_time->year);
+ buf[2] = mod_time->month;
+ buf[3] = mod_time->day;
+ buf[4] = mod_time->hour;
+ buf[5] = mod_time->minute;
+ buf[6] = mod_time->second;
+
+ png_write_complete_chunk(png_ptr, png_tIME, buf, (png_size_t)7);
+}
+#endif
+
+/* Initializes the row writing capability of libpng */
+void /* PRIVATE */
+png_write_start_row(png_structrp png_ptr)
+{
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif
+
+ png_alloc_size_t buf_size;
+ int usr_pixel_depth;
+
+ png_debug(1, "in png_write_start_row");
+
+ usr_pixel_depth = png_ptr->usr_channels * png_ptr->usr_bit_depth;
+ buf_size = PNG_ROWBYTES(usr_pixel_depth, png_ptr->width) + 1;
+
+ /* 1.5.6: added to allow checking in the row write code. */
+ png_ptr->transformed_pixel_depth = png_ptr->pixel_depth;
+ png_ptr->maximum_pixel_depth = (png_byte)usr_pixel_depth;
+
+ /* Set up row buffer */
+ png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, buf_size);
+
+ png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
+
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ /* Set up filtering buffer, if using this filter */
+ if (png_ptr->do_filter & PNG_FILTER_SUB)
+ {
+ png_ptr->sub_row = (png_bytep)png_malloc(png_ptr, png_ptr->rowbytes + 1);
+
+ png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
+ }
+
+ /* We only need to keep the previous row if we are using one of these. */
+ if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
+ {
+ /* Set up previous row buffer */
+ png_ptr->prev_row = (png_bytep)png_calloc(png_ptr, buf_size);
+
+ if (png_ptr->do_filter & PNG_FILTER_UP)
+ {
+ png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
+ png_ptr->rowbytes + 1);
+
+ png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
+ }
+
+ if (png_ptr->do_filter & PNG_FILTER_AVG)
+ {
+ png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
+ png_ptr->rowbytes + 1);
+
+ png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
+ }
+
+ if (png_ptr->do_filter & PNG_FILTER_PAETH)
+ {
+ png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
+ png_ptr->rowbytes + 1);
+
+ png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
+ }
+ }
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* If interlaced, we need to set up width and height of pass */
+ if (png_ptr->interlaced)
+ {
+ if (!(png_ptr->transformations & PNG_INTERLACE))
+ {
+ png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
+ png_pass_ystart[0]) / png_pass_yinc[0];
+
+ png_ptr->usr_width = (png_ptr->width + png_pass_inc[0] - 1 -
+ png_pass_start[0]) / png_pass_inc[0];
+ }
+
+ else
+ {
+ png_ptr->num_rows = png_ptr->height;
+ png_ptr->usr_width = png_ptr->width;
+ }
+ }
+
+ else
+#endif
+ {
+ png_ptr->num_rows = png_ptr->height;
+ png_ptr->usr_width = png_ptr->width;
+ }
+}
+
+/* Internal use only. Called when finished processing a row of data. */
+void /* PRIVATE */
+png_write_finish_row(png_structrp png_ptr)
+{
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif
+
+ png_debug(1, "in png_write_finish_row");
+
+ /* Next row */
+ png_ptr->row_number++;
+
+ /* See if we are done */
+ if (png_ptr->row_number < png_ptr->num_rows)
+ return;
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* If interlaced, go to next pass */
+ if (png_ptr->interlaced)
+ {
+ png_ptr->row_number = 0;
+ if (png_ptr->transformations & PNG_INTERLACE)
+ {
+ png_ptr->pass++;
+ }
+
+ else
+ {
+ /* Loop until we find a non-zero width or height pass */
+ do
+ {
+ png_ptr->pass++;
+
+ if (png_ptr->pass >= 7)
+ break;
+
+ png_ptr->usr_width = (png_ptr->width +
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+
+ png_ptr->num_rows = (png_ptr->height +
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
+
+ if (png_ptr->transformations & PNG_INTERLACE)
+ break;
+
+ } while (png_ptr->usr_width == 0 || png_ptr->num_rows == 0);
+
+ }
+
+ /* Reset the row above the image for the next pass */
+ if (png_ptr->pass < 7)
+ {
+ if (png_ptr->prev_row != NULL)
+ memset(png_ptr->prev_row, 0,
+ (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels*
+ png_ptr->usr_bit_depth, png_ptr->width)) + 1);
+
+ return;
+ }
+ }
+#endif
+
+ /* If we get here, we've just written the last row, so we need
+ to flush the compressor */
+ png_compress_IDAT(png_ptr, NULL, 0, Z_FINISH);
+}
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+/* Pick out the correct pixels for the interlace pass.
+ * The basic idea here is to go through the row with a source
+ * pointer and a destination pointer (sp and dp), and copy the
+ * correct pixels for the pass. As the row gets compacted,
+ * sp will always be >= dp, so we should never overwrite anything.
+ * See the default: case for the easiest code to understand.
+ */
+void /* PRIVATE */
+png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
+{
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ png_debug(1, "in png_do_write_interlace");
+
+ /* We don't have to do anything on the last pass (6) */
+ if (pass < 6)
+ {
+ /* Each pixel depth is handled separately */
+ switch (row_info->pixel_depth)
+ {
+ case 1:
+ {
+ png_bytep sp;
+ png_bytep dp;
+ int shift;
+ int d;
+ int value;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ dp = row;
+ d = 0;
+ shift = 7;
+
+ for (i = png_pass_start[pass]; i < row_width;
+ i += png_pass_inc[pass])
+ {
+ sp = row + (png_size_t)(i >> 3);
+ value = (int)(*sp >> (7 - (int)(i & 0x07))) & 0x01;
+ d |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 7;
+ *dp++ = (png_byte)d;
+ d = 0;
+ }
+
+ else
+ shift--;
+
+ }
+ if (shift != 7)
+ *dp = (png_byte)d;
+
+ break;
+ }
+
+ case 2:
+ {
+ png_bytep sp;
+ png_bytep dp;
+ int shift;
+ int d;
+ int value;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ dp = row;
+ shift = 6;
+ d = 0;
+
+ for (i = png_pass_start[pass]; i < row_width;
+ i += png_pass_inc[pass])
+ {
+ sp = row + (png_size_t)(i >> 2);
+ value = (*sp >> ((3 - (int)(i & 0x03)) << 1)) & 0x03;
+ d |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 6;
+ *dp++ = (png_byte)d;
+ d = 0;
+ }
+
+ else
+ shift -= 2;
+ }
+ if (shift != 6)
+ *dp = (png_byte)d;
+
+ break;
+ }
+
+ case 4:
+ {
+ png_bytep sp;
+ png_bytep dp;
+ int shift;
+ int d;
+ int value;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ dp = row;
+ shift = 4;
+ d = 0;
+ for (i = png_pass_start[pass]; i < row_width;
+ i += png_pass_inc[pass])
+ {
+ sp = row + (png_size_t)(i >> 1);
+ value = (*sp >> ((1 - (int)(i & 0x01)) << 2)) & 0x0f;
+ d |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 4;
+ *dp++ = (png_byte)d;
+ d = 0;
+ }
+
+ else
+ shift -= 4;
+ }
+ if (shift != 4)
+ *dp = (png_byte)d;
+
+ break;
+ }
+
+ default:
+ {
+ png_bytep sp;
+ png_bytep dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+ png_size_t pixel_bytes;
+
+ /* Start at the beginning */
+ dp = row;
+
+ /* Find out how many bytes each pixel takes up */
+ pixel_bytes = (row_info->pixel_depth >> 3);
+
+ /* Loop through the row, only looking at the pixels that matter */
+ for (i = png_pass_start[pass]; i < row_width;
+ i += png_pass_inc[pass])
+ {
+ /* Find out where the original pixel is */
+ sp = row + (png_size_t)i * pixel_bytes;
+
+ /* Move the pixel */
+ if (dp != sp)
+ memcpy(dp, sp, pixel_bytes);
+
+ /* Next pixel */
+ dp += pixel_bytes;
+ }
+ break;
+ }
+ }
+ /* Set new row width */
+ row_info->width = (row_info->width +
+ png_pass_inc[pass] - 1 -
+ png_pass_start[pass]) /
+ png_pass_inc[pass];
+
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
+ row_info->width);
+ }
+}
+#endif
+
+/* This filters the row, chooses which filter to use, if it has not already
+ * been specified by the application, and then writes the row out with the
+ * chosen filter.
+ */
+static void png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
+ png_size_t row_bytes);
+
+#define PNG_MAXSUM (((png_uint_32)(-1)) >> 1)
+#define PNG_HISHIFT 10
+#define PNG_LOMASK ((png_uint_32)0xffffL)
+#define PNG_HIMASK ((png_uint_32)(~PNG_LOMASK >> PNG_HISHIFT))
+void /* PRIVATE */
+png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
+{
+ png_bytep best_row;
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ png_bytep prev_row, row_buf;
+ png_uint_32 mins, bpp;
+ png_byte filter_to_do = png_ptr->do_filter;
+ png_size_t row_bytes = row_info->rowbytes;
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ int num_p_filters = png_ptr->num_prev_filters;
+#endif
+
+ png_debug(1, "in png_write_find_filter");
+
+#ifndef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->row_number == 0 && filter_to_do == PNG_ALL_FILTERS)
+ {
+ /* These will never be selected so we need not test them. */
+ filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH);
+ }
+#endif
+
+ /* Find out how many bytes offset each pixel is */
+ bpp = (row_info->pixel_depth + 7) >> 3;
+
+ prev_row = png_ptr->prev_row;
+#endif
+ best_row = png_ptr->row_buf;
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ row_buf = best_row;
+ mins = PNG_MAXSUM;
+
+ /* The prediction method we use is to find which method provides the
+ * smallest value when summing the absolute values of the distances
+ * from zero, using anything >= 128 as negative numbers. This is known
+ * as the "minimum sum of absolute differences" heuristic. Other
+ * heuristics are the "weighted minimum sum of absolute differences"
+ * (experimental and can in theory improve compression), and the "zlib
+ * predictive" method (not implemented yet), which does test compressions
+ * of lines using different filter methods, and then chooses the
+ * (series of) filter(s) that give minimum compressed data size (VERY
+ * computationally expensive).
+ *
+ * GRR 980525: consider also
+ *
+ * (1) minimum sum of absolute differences from running average (i.e.,
+ * keep running sum of non-absolute differences & count of bytes)
+ * [track dispersion, too? restart average if dispersion too large?]
+ *
+ * (1b) minimum sum of absolute differences from sliding average, probably
+ * with window size <= deflate window (usually 32K)
+ *
+ * (2) minimum sum of squared differences from zero or running average
+ * (i.e., ~ root-mean-square approach)
+ */
+
+
+ /* We don't need to test the 'no filter' case if this is the only filter
+ * that has been chosen, as it doesn't actually do anything to the data.
+ */
+ if ((filter_to_do & PNG_FILTER_NONE) && filter_to_do != PNG_FILTER_NONE)
+ {
+ png_bytep rp;
+ png_uint_32 sum = 0;
+ png_size_t i;
+ int v;
+
+ for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++)
+ {
+ v = *rp;
+ sum += (v < 128) ? v : 256 - v;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ png_uint_32 sumhi, sumlo;
+ int j;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK; /* Gives us some footroom */
+
+ /* Reduce the sum if we match any of the previous rows */
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
+ {
+ sumlo = (sumlo * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ sumhi = (sumhi * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ /* Factor in the cost of this filter (this is here for completeness,
+ * but it makes no sense to have a "cost" for the NONE filter, as
+ * it has the minimum possible computational cost - none).
+ */
+ sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >>
+ PNG_COST_SHIFT;
+
+ sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+ mins = sum;
+ }
+
+ /* Sub filter */
+ if (filter_to_do == PNG_FILTER_SUB)
+ /* It's the only filter so no testing is needed */
+ {
+ png_bytep rp, lp, dp;
+ png_size_t i;
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;
+ i++, rp++, dp++)
+ {
+ *dp = *rp;
+ }
+
+ for (lp = row_buf + 1; i < row_bytes;
+ i++, rp++, lp++, dp++)
+ {
+ *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
+ }
+
+ best_row = png_ptr->sub_row;
+ }
+
+ else if (filter_to_do & PNG_FILTER_SUB)
+ {
+ png_bytep rp, dp, lp;
+ png_uint_32 sum = 0, lmins = mins;
+ png_size_t i;
+ int v;
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ /* We temporarily increase the "minimum sum" by the factor we
+ * would reduce the sum of this filter, so that we can do the
+ * early exit comparison without scaling the sum each time.
+ */
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 lmhi, lmlo;
+ lmlo = lmins & PNG_LOMASK;
+ lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB)
+ {
+ lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
+ PNG_COST_SHIFT;
+
+ lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
+ PNG_COST_SHIFT;
+
+ if (lmhi > PNG_HIMASK)
+ lmins = PNG_MAXSUM;
+
+ else
+ lmins = (lmhi << PNG_HISHIFT) + lmlo;
+ }
+#endif
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;
+ i++, rp++, dp++)
+ {
+ v = *dp = *rp;
+
+ sum += (v < 128) ? v : 256 - v;
+ }
+
+ for (lp = row_buf + 1; i < row_bytes;
+ i++, rp++, lp++, dp++)
+ {
+ v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+
+ if (sum > lmins) /* We are already worse, don't continue. */
+ break;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 sumhi, sumlo;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB)
+ {
+ sumlo = (sumlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ sumhi = (sumhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ sumlo = (sumlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
+ PNG_COST_SHIFT;
+
+ sumhi = (sumhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+
+ if (sum < mins)
+ {
+ mins = sum;
+ best_row = png_ptr->sub_row;
+ }
+ }
+
+ /* Up filter */
+ if (filter_to_do == PNG_FILTER_UP)
+ {
+ png_bytep rp, dp, pp;
+ png_size_t i;
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,
+ pp = prev_row + 1; i < row_bytes;
+ i++, rp++, pp++, dp++)
+ {
+ *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff);
+ }
+
+ best_row = png_ptr->up_row;
+ }
+
+ else if (filter_to_do & PNG_FILTER_UP)
+ {
+ png_bytep rp, dp, pp;
+ png_uint_32 sum = 0, lmins = mins;
+ png_size_t i;
+ int v;
+
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 lmhi, lmlo;
+ lmlo = lmins & PNG_LOMASK;
+ lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP)
+ {
+ lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >>
+ PNG_COST_SHIFT;
+
+ lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >>
+ PNG_COST_SHIFT;
+
+ if (lmhi > PNG_HIMASK)
+ lmins = PNG_MAXSUM;
+
+ else
+ lmins = (lmhi << PNG_HISHIFT) + lmlo;
+ }
+#endif
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,
+ pp = prev_row + 1; i < row_bytes; i++)
+ {
+ v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+
+ if (sum > lmins) /* We are already worse, don't continue. */
+ break;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 sumhi, sumlo;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP)
+ {
+ sumlo = (sumlo * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ sumhi = (sumhi * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >>
+ PNG_COST_SHIFT;
+
+ sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+
+ if (sum < mins)
+ {
+ mins = sum;
+ best_row = png_ptr->up_row;
+ }
+ }
+
+ /* Avg filter */
+ if (filter_to_do == PNG_FILTER_AVG)
+ {
+ png_bytep rp, dp, pp, lp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,
+ pp = prev_row + 1; i < bpp; i++)
+ {
+ *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
+ }
+
+ for (lp = row_buf + 1; i < row_bytes; i++)
+ {
+ *dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2))
+ & 0xff);
+ }
+ best_row = png_ptr->avg_row;
+ }
+
+ else if (filter_to_do & PNG_FILTER_AVG)
+ {
+ png_bytep rp, dp, pp, lp;
+ png_uint_32 sum = 0, lmins = mins;
+ png_size_t i;
+ int v;
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 lmhi, lmlo;
+ lmlo = lmins & PNG_LOMASK;
+ lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_AVG)
+ {
+ lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >>
+ PNG_COST_SHIFT;
+
+ lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >>
+ PNG_COST_SHIFT;
+
+ if (lmhi > PNG_HIMASK)
+ lmins = PNG_MAXSUM;
+
+ else
+ lmins = (lmhi << PNG_HISHIFT) + lmlo;
+ }
+#endif
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,
+ pp = prev_row + 1; i < bpp; i++)
+ {
+ v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+ }
+
+ for (lp = row_buf + 1; i < row_bytes; i++)
+ {
+ v = *dp++ =
+ (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+
+ if (sum > lmins) /* We are already worse, don't continue. */
+ break;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 sumhi, sumlo;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
+ {
+ sumlo = (sumlo * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ sumhi = (sumhi * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >>
+ PNG_COST_SHIFT;
+
+ sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+
+ if (sum < mins)
+ {
+ mins = sum;
+ best_row = png_ptr->avg_row;
+ }
+ }
+
+ /* Paeth filter */
+ if (filter_to_do == PNG_FILTER_PAETH)
+ {
+ png_bytep rp, dp, pp, cp, lp;
+ png_size_t i;
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,
+ pp = prev_row + 1; i < bpp; i++)
+ {
+ *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
+ }
+
+ for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++)
+ {
+ int a, b, c, pa, pb, pc, p;
+
+ b = *pp++;
+ c = *cp++;
+ a = *lp++;
+
+ p = b - c;
+ pc = a - c;
+
+#ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+#else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+#endif
+
+ p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
+
+ *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
+ }
+ best_row = png_ptr->paeth_row;
+ }
+
+ else if (filter_to_do & PNG_FILTER_PAETH)
+ {
+ png_bytep rp, dp, pp, cp, lp;
+ png_uint_32 sum = 0, lmins = mins;
+ png_size_t i;
+ int v;
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 lmhi, lmlo;
+ lmlo = lmins & PNG_LOMASK;
+ lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH)
+ {
+ lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >>
+ PNG_COST_SHIFT;
+
+ lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >>
+ PNG_COST_SHIFT;
+
+ if (lmhi > PNG_HIMASK)
+ lmins = PNG_MAXSUM;
+
+ else
+ lmins = (lmhi << PNG_HISHIFT) + lmlo;
+ }
+#endif
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,
+ pp = prev_row + 1; i < bpp; i++)
+ {
+ v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+ }
+
+ for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++)
+ {
+ int a, b, c, pa, pb, pc, p;
+
+ b = *pp++;
+ c = *cp++;
+ a = *lp++;
+
+#ifndef PNG_SLOW_PAETH
+ p = b - c;
+ pc = a - c;
+#ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+#else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+#endif
+ p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
+#else /* PNG_SLOW_PAETH */
+ p = a + b - c;
+ pa = abs(p - a);
+ pb = abs(p - b);
+ pc = abs(p - c);
+
+ if (pa <= pb && pa <= pc)
+ p = a;
+
+ else if (pb <= pc)
+ p = b;
+
+ else
+ p = c;
+#endif /* PNG_SLOW_PAETH */
+
+ v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+
+ if (sum > lmins) /* We are already worse, don't continue. */
+ break;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 sumhi, sumlo;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH)
+ {
+ sumlo = (sumlo * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+
+ sumhi = (sumhi * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >>
+ PNG_COST_SHIFT;
+
+ sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+
+ if (sum < mins)
+ {
+ best_row = png_ptr->paeth_row;
+ }
+ }
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+
+ /* Do the actual writing of the filtered row data from the chosen filter. */
+ png_write_filtered_row(png_ptr, best_row, row_info->rowbytes+1);
+
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ /* Save the type of filter we picked this time for future calculations */
+ if (png_ptr->num_prev_filters > 0)
+ {
+ int j;
+
+ for (j = 1; j < num_p_filters; j++)
+ {
+ png_ptr->prev_filters[j] = png_ptr->prev_filters[j - 1];
+ }
+
+ png_ptr->prev_filters[j] = best_row[0];
+ }
+#endif
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+}
+
+
+/* Do the actual writing of a previously filtered row. */
+static void
+png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
+ png_size_t full_row_length/*includes filter byte*/)
+{
+ png_debug(1, "in png_write_filtered_row");
+
+ png_debug1(2, "filter = %d", filtered_row[0]);
+
+ png_compress_IDAT(png_ptr, filtered_row, full_row_length, Z_NO_FLUSH);
+
+ /* Swap the current and previous rows */
+ if (png_ptr->prev_row != NULL)
+ {
+ png_bytep tptr;
+
+ tptr = png_ptr->prev_row;
+ png_ptr->prev_row = png_ptr->row_buf;
+ png_ptr->row_buf = tptr;
+ }
+
+ /* Finish row - updates counters and flushes zlib if last row */
+ png_write_finish_row(png_ptr);
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+ png_ptr->flush_rows++;
+
+ if (png_ptr->flush_dist > 0 &&
+ png_ptr->flush_rows >= png_ptr->flush_dist)
+ {
+ png_write_flush(png_ptr);
+ }
+#endif
+}
+#endif /* PNG_WRITE_SUPPORTED */
+#endif//_FPDFAPI_MINI_
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/png.h b/core/src/fxcodec/fx_lpng/lpng_v163/png.h
new file mode 100644
index 0000000..c3fb52d
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/png.h
@@ -0,0 +1,3563 @@
+
+/* png.h - header file for PNG reference library
+ *
+ * libpng version 1.6.3 - July 18, 2013
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license (See LICENSE, below)
+ *
+ * Authors and maintainers:
+ * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
+ * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
+ * libpng versions 0.97, January 1998, through 1.6.3 - July 18, 2013: Glenn
+ * See also "Contributing Authors", below.
+ *
+ * Note about libpng version numbers:
+ *
+ * Due to various miscommunications, unforeseen code incompatibilities
+ * and occasional factors outside the authors' control, version numbering
+ * on the library has not always been consistent and straightforward.
+ * The following table summarizes matters since version 0.89c, which was
+ * the first widely used release:
+ *
+ * source png.h png.h shared-lib
+ * version string int version
+ * ------- ------ ----- ----------
+ * 0.89c "1.0 beta 3" 0.89 89 1.0.89
+ * 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90]
+ * 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95]
+ * 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96]
+ * 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97]
+ * 0.97c 0.97 97 2.0.97
+ * 0.98 0.98 98 2.0.98
+ * 0.99 0.99 98 2.0.99
+ * 0.99a-m 0.99 99 2.0.99
+ * 1.00 1.00 100 2.1.0 [100 should be 10000]
+ * 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000]
+ * 1.0.1 png.h string is 10001 2.1.0
+ * 1.0.1a-e identical to the 10002 from here on, the shared library
+ * 1.0.2 source version) 10002 is 2.V where V is the source code
+ * 1.0.2a-b 10003 version, except as noted.
+ * 1.0.3 10003
+ * 1.0.3a-d 10004
+ * 1.0.4 10004
+ * 1.0.4a-f 10005
+ * 1.0.5 (+ 2 patches) 10005
+ * 1.0.5a-d 10006
+ * 1.0.5e-r 10100 (not source compatible)
+ * 1.0.5s-v 10006 (not binary compatible)
+ * 1.0.6 (+ 3 patches) 10006 (still binary incompatible)
+ * 1.0.6d-f 10007 (still binary incompatible)
+ * 1.0.6g 10007
+ * 1.0.6h 10007 10.6h (testing xy.z so-numbering)
+ * 1.0.6i 10007 10.6i
+ * 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0)
+ * 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible)
+ * 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible)
+ * 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible)
+ * 1.0.7 1 10007 (still compatible)
+ * 1.0.8beta1-4 1 10008 2.1.0.8beta1-4
+ * 1.0.8rc1 1 10008 2.1.0.8rc1
+ * 1.0.8 1 10008 2.1.0.8
+ * 1.0.9beta1-6 1 10009 2.1.0.9beta1-6
+ * 1.0.9rc1 1 10009 2.1.0.9rc1
+ * 1.0.9beta7-10 1 10009 2.1.0.9beta7-10
+ * 1.0.9rc2 1 10009 2.1.0.9rc2
+ * 1.0.9 1 10009 2.1.0.9
+ * 1.0.10beta1 1 10010 2.1.0.10beta1
+ * 1.0.10rc1 1 10010 2.1.0.10rc1
+ * 1.0.10 1 10010 2.1.0.10
+ * 1.0.11beta1-3 1 10011 2.1.0.11beta1-3
+ * 1.0.11rc1 1 10011 2.1.0.11rc1
+ * 1.0.11 1 10011 2.1.0.11
+ * 1.0.12beta1-2 2 10012 2.1.0.12beta1-2
+ * 1.0.12rc1 2 10012 2.1.0.12rc1
+ * 1.0.12 2 10012 2.1.0.12
+ * 1.1.0a-f - 10100 2.1.1.0a-f (branch abandoned)
+ * 1.2.0beta1-2 2 10200 2.1.2.0beta1-2
+ * 1.2.0beta3-5 3 10200 3.1.2.0beta3-5
+ * 1.2.0rc1 3 10200 3.1.2.0rc1
+ * 1.2.0 3 10200 3.1.2.0
+ * 1.2.1beta1-4 3 10201 3.1.2.1beta1-4
+ * 1.2.1rc1-2 3 10201 3.1.2.1rc1-2
+ * 1.2.1 3 10201 3.1.2.1
+ * 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6
+ * 1.0.13beta1 10 10013 10.so.0.1.0.13beta1
+ * 1.0.13rc1 10 10013 10.so.0.1.0.13rc1
+ * 1.2.2rc1 12 10202 12.so.0.1.2.2rc1
+ * 1.0.13 10 10013 10.so.0.1.0.13
+ * 1.2.2 12 10202 12.so.0.1.2.2
+ * 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6
+ * 1.2.3 12 10203 12.so.0.1.2.3
+ * 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3
+ * 1.0.14rc1 13 10014 10.so.0.1.0.14rc1
+ * 1.2.4rc1 13 10204 12.so.0.1.2.4rc1
+ * 1.0.14 10 10014 10.so.0.1.0.14
+ * 1.2.4 13 10204 12.so.0.1.2.4
+ * 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2
+ * 1.0.15rc1-3 10 10015 10.so.0.1.0.15rc1-3
+ * 1.2.5rc1-3 13 10205 12.so.0.1.2.5rc1-3
+ * 1.0.15 10 10015 10.so.0.1.0.15
+ * 1.2.5 13 10205 12.so.0.1.2.5
+ * 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
+ * 1.0.16 10 10016 10.so.0.1.0.16
+ * 1.2.6 13 10206 12.so.0.1.2.6
+ * 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
+ * 1.0.17rc1 10 10017 12.so.0.1.0.17rc1
+ * 1.2.7rc1 13 10207 12.so.0.1.2.7rc1
+ * 1.0.17 10 10017 12.so.0.1.0.17
+ * 1.2.7 13 10207 12.so.0.1.2.7
+ * 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5
+ * 1.0.18rc1-5 10 10018 12.so.0.1.0.18rc1-5
+ * 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5
+ * 1.0.18 10 10018 12.so.0.1.0.18
+ * 1.2.8 13 10208 12.so.0.1.2.8
+ * 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3
+ * 1.2.9beta4-11 13 10209 12.so.0.9[.0]
+ * 1.2.9rc1 13 10209 12.so.0.9[.0]
+ * 1.2.9 13 10209 12.so.0.9[.0]
+ * 1.2.10beta1-7 13 10210 12.so.0.10[.0]
+ * 1.2.10rc1-2 13 10210 12.so.0.10[.0]
+ * 1.2.10 13 10210 12.so.0.10[.0]
+ * 1.4.0beta1-5 14 10400 14.so.0.0[.0]
+ * 1.2.11beta1-4 13 10211 12.so.0.11[.0]
+ * 1.4.0beta7-8 14 10400 14.so.0.0[.0]
+ * 1.2.11 13 10211 12.so.0.11[.0]
+ * 1.2.12 13 10212 12.so.0.12[.0]
+ * 1.4.0beta9-14 14 10400 14.so.0.0[.0]
+ * 1.2.13 13 10213 12.so.0.13[.0]
+ * 1.4.0beta15-36 14 10400 14.so.0.0[.0]
+ * 1.4.0beta37-87 14 10400 14.so.14.0[.0]
+ * 1.4.0rc01 14 10400 14.so.14.0[.0]
+ * 1.4.0beta88-109 14 10400 14.so.14.0[.0]
+ * 1.4.0rc02-08 14 10400 14.so.14.0[.0]
+ * 1.4.0 14 10400 14.so.14.0[.0]
+ * 1.4.1beta01-03 14 10401 14.so.14.1[.0]
+ * 1.4.1rc01 14 10401 14.so.14.1[.0]
+ * 1.4.1beta04-12 14 10401 14.so.14.1[.0]
+ * 1.4.1 14 10401 14.so.14.1[.0]
+ * 1.4.2 14 10402 14.so.14.2[.0]
+ * 1.4.3 14 10403 14.so.14.3[.0]
+ * 1.4.4 14 10404 14.so.14.4[.0]
+ * 1.5.0beta01-58 15 10500 15.so.15.0[.0]
+ * 1.5.0rc01-07 15 10500 15.so.15.0[.0]
+ * 1.5.0 15 10500 15.so.15.0[.0]
+ * 1.5.1beta01-11 15 10501 15.so.15.1[.0]
+ * 1.5.1rc01-02 15 10501 15.so.15.1[.0]
+ * 1.5.1 15 10501 15.so.15.1[.0]
+ * 1.5.2beta01-03 15 10502 15.so.15.2[.0]
+ * 1.5.2rc01-03 15 10502 15.so.15.2[.0]
+ * 1.5.2 15 10502 15.so.15.2[.0]
+ * 1.5.3beta01-10 15 10503 15.so.15.3[.0]
+ * 1.5.3rc01-02 15 10503 15.so.15.3[.0]
+ * 1.5.3beta11 15 10503 15.so.15.3[.0]
+ * 1.5.3 [omitted]
+ * 1.5.4beta01-08 15 10504 15.so.15.4[.0]
+ * 1.5.4rc01 15 10504 15.so.15.4[.0]
+ * 1.5.4 15 10504 15.so.15.4[.0]
+ * 1.5.5beta01-08 15 10505 15.so.15.5[.0]
+ * 1.5.5rc01 15 10505 15.so.15.5[.0]
+ * 1.5.5 15 10505 15.so.15.5[.0]
+ * 1.5.6beta01-07 15 10506 15.so.15.6[.0]
+ * 1.5.6rc01-03 15 10506 15.so.15.6[.0]
+ * 1.5.6 15 10506 15.so.15.6[.0]
+ * 1.5.7beta01-05 15 10507 15.so.15.7[.0]
+ * 1.5.7rc01-03 15 10507 15.so.15.7[.0]
+ * 1.5.7 15 10507 15.so.15.7[.0]
+ * 1.6.0beta01-40 16 10600 16.so.16.0[.0]
+ * 1.6.0rc01-08 16 10600 16.so.16.0[.0]
+ * 1.6.0 16 10600 16.so.16.0[.0]
+ * 1.6.1beta01-09 16 10601 16.so.16.1[.0]
+ * 1.6.1rc01 16 10601 16.so.16.1[.0]
+ * 1.6.1 16 10601 16.so.16.1[.0]
+ * 1.6.2beta01 16 10602 16.so.16.2[.0]
+ * 1.6.2rc01-06 16 10602 16.so.16.2[.0]
+ * 1.6.2 16 10602 16.so.16.2[.0]
+ * 1.6.3beta01-11 16 10603 16.so.16.3[.0]
+ * 1.6.3rc01 16 10603 16.so.16.3[.0]
+ * 1.6.3 16 10603 16.so.16.3[.0]
+ *
+ * Henceforth the source version will match the shared-library major
+ * and minor numbers; the shared-library major version number will be
+ * used for changes in backward compatibility, as it is intended. The
+ * PNG_LIBPNG_VER macro, which is not used within libpng but is available
+ * for applications, is an unsigned integer of the form xyyzz corresponding
+ * to the source version x.y.z (leading zeros in y and z). Beta versions
+ * were given the previous public release number plus a letter, until
+ * version 1.0.6j; from then on they were given the upcoming public
+ * release number plus "betaNN" or "rcNN".
+ *
+ * Binary incompatibility exists only when applications make direct access
+ * to the info_ptr or png_ptr members through png.h, and the compiled
+ * application is loaded with a different version of the library.
+ *
+ * DLLNUM will change each time there are forward or backward changes
+ * in binary compatibility (e.g., when a new feature is added).
+ *
+ * See libpng-manual.txt or libpng.3 for more information. The PNG
+ * specification is available as a W3C Recommendation and as an ISO
+ * Specification, <http://www.w3.org/TR/2003/REC-PNG-20031110/
+ */
+
+/*
+ * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+ *
+ * If you modify libpng you may insert additional notices immediately following
+ * this sentence.
+ *
+ * This code is released under the libpng license.
+ *
+ * libpng versions 1.2.6, August 15, 2004, through 1.6.3, July 18, 2013, are
+ * Copyright (c) 2004, 2006-2013 Glenn Randers-Pehrson, and are
+ * distributed according to the same disclaimer and license as libpng-1.2.5
+ * with the following individual added to the list of Contributing Authors:
+ *
+ * Cosmin Truta
+ *
+ * libpng versions 1.0.7, July 1, 2000, through 1.2.5, October 3, 2002, are
+ * Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
+ * distributed according to the same disclaimer and license as libpng-1.0.6
+ * with the following individuals added to the list of Contributing Authors:
+ *
+ * Simon-Pierre Cadieux
+ * Eric S. Raymond
+ * Gilles Vollant
+ *
+ * and with the following additions to the disclaimer:
+ *
+ * There is no warranty against interference with your enjoyment of the
+ * library or against infringement. There is no warranty that our
+ * efforts or the library will fulfill any of your particular purposes
+ * or needs. This library is provided with all faults, and the entire
+ * risk of satisfactory quality, performance, accuracy, and effort is with
+ * the user.
+ *
+ * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
+ * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson, and are
+ * distributed according to the same disclaimer and license as libpng-0.96,
+ * with the following individuals added to the list of Contributing Authors:
+ *
+ * Tom Lane
+ * Glenn Randers-Pehrson
+ * Willem van Schaik
+ *
+ * libpng versions 0.89, June 1996, through 0.96, May 1997, are
+ * Copyright (c) 1996, 1997 Andreas Dilger
+ * Distributed according to the same disclaimer and license as libpng-0.88,
+ * with the following individuals added to the list of Contributing Authors:
+ *
+ * John Bowler
+ * Kevin Bracey
+ * Sam Bushell
+ * Magnus Holmgren
+ * Greg Roelofs
+ * Tom Tanner
+ *
+ * libpng versions 0.5, May 1995, through 0.88, January 1996, are
+ * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
+ *
+ * For the purposes of this copyright and license, "Contributing Authors"
+ * is defined as the following set of individuals:
+ *
+ * Andreas Dilger
+ * Dave Martindale
+ * Guy Eric Schalnat
+ * Paul Schmidt
+ * Tim Wegner
+ *
+ * The PNG Reference Library is supplied "AS IS". The Contributing Authors
+ * and Group 42, Inc. disclaim all warranties, expressed or implied,
+ * including, without limitation, the warranties of merchantability and of
+ * fitness for any purpose. The Contributing Authors and Group 42, Inc.
+ * assume no liability for direct, indirect, incidental, special, exemplary,
+ * or consequential damages, which may result from the use of the PNG
+ * Reference Library, even if advised of the possibility of such damage.
+ *
+ * Permission is hereby granted to use, copy, modify, and distribute this
+ * source code, or portions hereof, for any purpose, without fee, subject
+ * to the following restrictions:
+ *
+ * 1. The origin of this source code must not be misrepresented.
+ *
+ * 2. Altered versions must be plainly marked as such and must not
+ * be misrepresented as being the original source.
+ *
+ * 3. This Copyright notice may not be removed or altered from
+ * any source or altered source distribution.
+ *
+ * The Contributing Authors and Group 42, Inc. specifically permit, without
+ * fee, and encourage the use of this source code as a component to
+ * supporting the PNG file format in commercial products. If you use this
+ * source code in a product, acknowledgment is not required but would be
+ * appreciated.
+ */
+
+/*
+ * A "png_get_copyright" function is available, for convenient use in "about"
+ * boxes and the like:
+ *
+ * printf("%s", png_get_copyright(NULL));
+ *
+ * Also, the PNG logo (in PNG format, of course) is supplied in the
+ * files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
+ */
+
+/*
+ * Libpng is OSI Certified Open Source Software. OSI Certified is a
+ * certification mark of the Open Source Initiative.
+ */
+
+/*
+ * The contributing authors would like to thank all those who helped
+ * with testing, bug fixes, and patience. This wouldn't have been
+ * possible without all of you.
+ *
+ * Thanks to Frank J. T. Wojcik for helping with the documentation.
+ */
+
+/*
+ * Y2K compliance in libpng:
+ * =========================
+ *
+ * July 18, 2013
+ *
+ * Since the PNG Development group is an ad-hoc body, we can't make
+ * an official declaration.
+ *
+ * This is your unofficial assurance that libpng from version 0.71 and
+ * upward through 1.6.3 are Y2K compliant. It is my belief that
+ * earlier versions were also Y2K compliant.
+ *
+ * Libpng only has two year fields. One is a 2-byte unsigned integer
+ * that will hold years up to 65535. The other, which is deprecated,
+ * holds the date in text format, and will hold years up to 9999.
+ *
+ * The integer is
+ * "png_uint_16 year" in png_time_struct.
+ *
+ * The string is
+ * "char time_buffer[29]" in png_struct. This is no longer used
+ * in libpng-1.6.x and will be removed from libpng-1.7.0.
+ *
+ * There are seven time-related functions:
+ * png.c: png_convert_to_rfc_1123_buffer() in png.c
+ * (formerly png_convert_to_rfc_1123() prior to libpng-1.5.x and
+ * png_convert_to_rfc_1152() in error prior to libpng-0.98)
+ * png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c
+ * png_convert_from_time_t() in pngwrite.c
+ * png_get_tIME() in pngget.c
+ * png_handle_tIME() in pngrutil.c, called in pngread.c
+ * png_set_tIME() in pngset.c
+ * png_write_tIME() in pngwutil.c, called in pngwrite.c
+ *
+ * All handle dates properly in a Y2K environment. The
+ * png_convert_from_time_t() function calls gmtime() to convert from system
+ * clock time, which returns (year - 1900), which we properly convert to
+ * the full 4-digit year. There is a possibility that libpng applications
+ * are not passing 4-digit years into the png_convert_to_rfc_1123_buffer()
+ * function, or that they are incorrectly passing only a 2-digit year
+ * instead of "year - 1900" into the png_convert_from_struct_tm() function,
+ * but this is not under our control. The libpng documentation has always
+ * stated that it works with 4-digit years, and the APIs have been
+ * documented as such.
+ *
+ * The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned
+ * integer to hold the year, and can hold years as large as 65535.
+ *
+ * zlib, upon which libpng depends, is also Y2K compliant. It contains
+ * no date-related code.
+ *
+ * Glenn Randers-Pehrson
+ * libpng maintainer
+ * PNG Development Group
+ */
+
+#ifndef PNG_H
+#define PNG_H
+
+/* This is not the place to learn how to use libpng. The file libpng-manual.txt
+ * describes how to use libpng, and the file example.c summarizes it
+ * with some code on which to build. This file is useful for looking
+ * at the actual function definitions and structure components.
+ *
+ * If you just need to read a PNG file and don't want to read the documentation
+ * skip to the end of this file and read the section entitled 'simplified API'.
+ */
+
+/* Sunliang.liu add 20100319 for avoid name conflict. */
+#define png_set_sig_bytes FOXIT_png_set_sig_bytes
+#define png_sig_cmp FOXIT_png_sig_cmp
+#define png_create_info_struct FOXIT_png_create_info_struct
+#define png_destroy_info_struct FOXIT_png_destroy_info_struct
+#define png_info_init_3 FOXIT_png_info_init_3
+#define png_data_freer FOXIT_png_data_freer
+#define png_free_data FOXIT_png_free_data
+#define png_info_destroy FOXIT_png_info_destroy
+#define png_get_io_ptr FOXIT_png_get_io_ptr
+#define png_init_io FOXIT_png_init_io
+#define png_convert_to_rfc1123 FOXIT_png_convert_to_rfc1123
+#define png_get_copyright FOXIT_png_get_copyright
+#define png_get_libpng_ver FOXIT_png_get_libpng_ver
+#define png_get_header_ver FOXIT_png_get_header_ver
+#define png_get_header_version FOXIT_png_get_header_version
+#define png_handle_as_unknown FOXIT_png_handle_as_unknown
+#define png_reset_zstream FOXIT_png_reset_zstream
+#define png_access_version_number FOXIT_png_access_version_number
+#define png_mmx_support FOXIT_png_mmx_support
+#define png_create_read_struct FOXIT_png_create_read_struct
+#define png_create_read_struct_2 FOXIT_png_create_read_struct_2
+#define png_create_write_struct FOXIT_png_create_write_struct
+#define png_create_write_struct_2 FOXIT_png_create_write_struct_2
+#define png_get_compression_buffer_size FOXIT_png_get_compression_buffer_size
+#define png_set_compression_buffer_size FOXIT_png_set_compression_buffer_size
+#define png_set_longjmp_fn FOXIT_png_set_longjmp_fn
+#define png_longjmp FOXIT_png_longjmp
+#define png_write_sig FOXIT_png_write_sig
+#define png_write_chunk FOXIT_png_write_chunk
+#define png_write_chunk_start FOXIT_png_write_chunk_start
+#define png_write_chunk_data FOXIT_png_write_chunk_data
+#define png_write_chunk_end FOXIT_png_write_chunk_end
+#define png_write_info_before_PLTE FOXIT_png_write_info_before_PLTE
+#define png_write_info FOXIT_png_write_info
+#define png_read_info FOXIT_png_read_info
+#define png_convert_to_rfc1123_buffer FOXIT_png_convert_to_rfc1123_buffer
+#define png_convert_from_struct_tm FOXIT_png_convert_from_struct_tm
+#define png_convert_from_time_t FOXIT_png_convert_from_time_t
+#define png_set_expand FOXIT_png_set_expand
+#define png_set_expand_gray_1_2_4_to_8 FOXIT_png_set_expand_gray_1_2_4_to_8
+#define png_set_palette_to_rgb FOXIT_png_set_palette_to_rgb
+#define png_set_tRNS_to_alpha FOXIT_png_set_tRNS_to_alpha
+#define png_set_expand_16 FOXIT_png_set_expand_16
+#define png_set_bgr FOXIT_png_set_bgr
+#define png_set_gray_to_rgb FOXIT_png_set_gray_to_rgb
+#define png_set_rgb_to_gray FOXIT_png_set_rgb_to_gray
+#define png_set_rgb_to_gray_fixed FOXIT_png_set_rgb_to_gray_fixed
+#define png_get_rgb_to_gray_status FOXIT_png_get_rgb_to_gray_status
+#define png_build_grayscale_palette FOXIT_png_build_grayscale_palette
+#define png_set_alpha_mode FOXIT_png_set_alpha_mode
+#define png_set_alpha_mode_fixed FOXIT_png_set_alpha_mode_fixed
+#define png_set_strip_alpha FOXIT_png_set_strip_alpha
+#define png_set_swap_alpha FOXIT_png_set_swap_alpha
+#define png_set_invert_alpha FOXIT_png_set_invert_alpha
+#define png_set_filler FOXIT_png_set_filler
+#define png_set_add_alpha FOXIT_png_set_add_alpha
+#define png_set_swap FOXIT_png_set_swap
+#define png_set_packing FOXIT_png_set_packing
+#define png_set_packswap FOXIT_png_set_packswap
+#define png_set_shift FOXIT_png_set_shift
+#define png_set_interlace_handling FOXIT_png_set_interlace_handling
+#define png_set_invert_mono FOXIT_png_set_invert_mono
+#define png_set_background FOXIT_png_set_background
+#define png_set_background_fixed FOXIT_png_set_background_fixed
+#define png_set_scale_16 FOXIT_png_set_scale_16
+#define png_set_quantize FOXIT_png_set_quantize
+#define png_set_gamma FOXIT_png_set_gamma
+#define png_set_gamma_fixed FOXIT_png_set_gamma_fixed
+#define png_set_flush FOXIT_png_set_flush
+#define png_write_flush FOXIT_png_write_flush
+#define png_start_read_image FOXIT_png_start_read_image
+#define png_read_update_info FOXIT_png_read_update_info
+#define png_read_rows FOXIT_png_read_rows
+#define png_read_row FOXIT_png_read_row
+#define png_read_image FOXIT_png_read_image
+#define png_write_row FOXIT_png_write_row
+#define png_write_rows FOXIT_png_write_rows
+#define png_write_image FOXIT_png_write_image
+#define png_write_end FOXIT_png_write_end
+#define png_read_end FOXIT_png_read_end
+#define png_destroy_read_struct FOXIT_png_destroy_read_struct
+#define png_destroy_write_struct FOXIT_png_destroy_write_struct
+#define png_set_crc_action FOXIT_png_set_crc_action
+#define png_set_filter FOXIT_png_set_filter
+#define png_set_filter_heuristics FOXIT_png_set_filter_heuristics
+#define png_set_filter_heuristics_fixed FOXIT_png_set_filter_heuristics_fixed
+#define png_set_compression_level FOXIT_png_set_compression_level
+#define png_set_compression_mem_level FOXIT_png_set_compression_mem_level
+#define png_set_compression_strategy FOXIT_png_set_compression_strategy
+#define png_set_compression_window_bits FOXIT_png_set_compression_window_bits
+#define png_set_compression_method FOXIT_png_set_compression_method
+#define png_set_text_compression_level FOXIT_png_set_text_compression_level
+#define png_set_text_compression_mem_level FOXIT_png_set_text_compression_mem_level
+#define png_set_text_compression_strategy FOXIT_png_set_text_compression_strategy
+#define png_set_text_compression_window_bits FOXIT_png_set_text_compression_window_bits
+#define png_set_text_compression_method FOXIT_png_set_text_compression_method
+#define png_set_error_fn FOXIT_png_set_error_fn
+#define png_get_error_ptr FOXIT_png_get_error_ptr
+#define png_set_write_fn FOXIT_png_set_write_fn
+#define png_set_read_fn FOXIT_png_set_read_fn
+#define png_set_read_status_fn FOXIT_png_set_read_status_fn
+#define png_set_write_status_fn FOXIT_png_set_write_status_fn
+#define png_set_read_user_transform_fn FOXIT_png_set_read_user_transform_fn
+#define png_set_write_user_transform_fn FOXIT_png_set_write_user_transform_fn
+#define png_set_user_transform_info FOXIT_png_set_user_transform_info
+#define png_get_user_transform_ptr FOXIT_png_get_user_transform_ptr
+#define png_get_current_row_number FOXIT_png_get_current_row_number
+#define png_get_current_pass_number FOXIT_png_get_current_pass_number
+#define png_set_read_user_chunk_fn FOXIT_png_set_read_user_chunk_fn
+#define png_get_user_chunk_ptr FOXIT_png_get_user_chunk_ptr
+#define png_set_progressive_read_fn FOXIT_png_set_progressive_read_fn
+#define png_get_progressive_ptr FOXIT_png_get_progressive_ptr
+#define png_process_data FOXIT_png_process_data
+#define png_process_data_pause FOXIT_png_process_data_pause
+#define png_process_data_skip FOXIT_png_process_data_skip
+#define png_progressive_combine_row FOXIT_png_progressive_combine_row
+#define png_calloc FOXIT_png_calloc
+#define png_error FOXIT_png_error
+#define png_chunk_error FOXIT_png_chunk_error
+#define png_err FOXIT_png_err
+#define png_warning FOXIT_png_warning
+#define png_chunk_warning FOXIT_png_chunk_warning
+#define png_benign_error FOXIT_png_benign_error
+#define png_chunk_benign_error FOXIT_png_chunk_benign_error
+#define png_set_benign_errors FOXIT_png_set_benign_errors
+#define png_get_valid FOXIT_png_get_valid
+#define png_get_rowbytes FOXIT_png_get_rowbytes
+#define png_get_rows FOXIT_png_get_rows
+#define png_set_rows FOXIT_png_set_rows
+#define png_get_channels FOXIT_png_get_channels
+#define png_get_image_width FOXIT_png_get_image_width
+#define png_get_image_height FOXIT_png_get_image_height
+#define png_get_bit_depth FOXIT_png_get_bit_depth
+#define png_get_color_type FOXIT_png_get_color_type
+#define png_get_filter_type FOXIT_png_get_filter_type
+#define png_get_interlace_type FOXIT_png_get_interlace_type
+#define png_get_compression_type FOXIT_png_get_compression_type
+#define png_get_pixels_per_meter FOXIT_png_get_pixels_per_meter
+#define png_get_x_pixels_per_meter FOXIT_png_get_x_pixels_per_meter
+#define png_get_y_pixels_per_meter FOXIT_png_get_y_pixels_per_meter
+#define png_get_pixel_aspect_ratio FOXIT_png_get_pixel_aspect_ratio
+#define png_get_pixel_aspect_ratio_fixed FOXIT_png_get_pixel_aspect_ratio_fixed
+#define png_get_x_offset_pixels FOXIT_png_get_x_offset_pixels
+#define png_get_y_offset_pixels FOXIT_png_get_y_offset_pixels
+#define png_get_x_offset_microns FOXIT_png_get_x_offset_microns
+#define png_get_y_offset_microns FOXIT_png_get_y_offset_microns
+#define png_get_signature FOXIT_png_get_signature
+#define png_get_bKGD FOXIT_png_get_bKGD
+#define png_set_bKGD FOXIT_png_set_bKGD
+#define png_get_cHRM FOXIT_png_get_cHRM
+#define png_get_cHRM_XYZ FOXIT_png_get_cHRM_XYZ
+#define png_get_cHRM_fixed FOXIT_png_get_cHRM_fixed
+#define png_get_cHRM_XYZ_fixed FOXIT_png_get_cHRM_XYZ_fixed
+#define png_set_cHRM FOXIT_png_set_cHRM
+#define png_set_cHRM_XYZ FOXIT_png_set_cHRM_XYZ
+#define png_set_cHRM_fixed FOXIT_png_set_cHRM_fixed
+#define png_set_cHRM_XYZ_fixed FOXIT_png_set_cHRM_XYZ_fixed
+#define png_get_gAMA FOXIT_png_get_gAMA
+#define png_set_gAMA FOXIT_png_set_gAMA
+#define png_set_gAMA_fixed FOXIT_png_set_gAMA_fixed
+#define png_get_hIST FOXIT_png_get_hIST
+#define png_set_hIST FOXIT_png_set_hIST
+#define png_get_IHDR FOXIT_png_get_IHDR
+#define png_set_IHDR FOXIT_png_set_IHDR
+#define png_get_oFFs FOXIT_png_get_oFFs
+#define png_set_oFFs FOXIT_png_set_oFFs
+#define png_get_pCAL FOXIT_png_get_pCAL
+#define png_set_pCAL FOXIT_png_set_pCAL
+#define png_set_pHYs FOXIT_png_set_pHYs
+#define png_get_PLTE FOXIT_png_get_PLTE
+#define png_set_PLTE FOXIT_png_set_PLTE
+#define png_get_sBIT FOXIT_png_get_sBIT
+#define png_set_sBIT FOXIT_png_set_sBIT
+#define png_get_sRGB FOXIT_png_get_sRGB
+#define png_set_sRGB FOXIT_png_set_sRGB
+#define png_set_sRGB_gAMA_and_cHRM FOXIT_png_set_sRGB_gAMA_and_cHRM
+#define png_get_iCCP FOXIT_png_get_iCCP
+#define png_set_iCCP FOXIT_png_set_iCCP
+#define png_get_sPLT FOXIT_png_get_sPLT
+#define png_set_sPLT FOXIT_png_set_sPLT
+#define png_get_text FOXIT_png_get_text
+#define png_set_text FOXIT_png_set_text
+#define png_get_tIME FOXIT_png_get_tIME
+#define png_set_tIME FOXIT_png_set_tIME
+#define png_get_tRNS FOXIT_png_get_tRNS
+#define png_set_tRNS FOXIT_png_set_tRNS
+#define png_get_sCAL FOXIT_png_get_sCAL
+#define png_get_sCAL_fixed FOXIT_png_get_sCAL_fixed
+#define png_get_sCAL_s FOXIT_png_get_sCAL_s
+#define png_set_sCAL FOXIT_png_set_sCAL
+#define png_set_sCAL_s FOXIT_png_set_sCAL_s
+#define png_set_keep_unknown_chunks FOXIT_png_set_keep_unknown_chunks
+#define png_set_unknown_chunks FOXIT_png_set_unknown_chunks
+#define png_set_unknown_chunk_location FOXIT_png_set_unknown_chunk_location
+#define png_get_unknown_chunks FOXIT_png_get_unknown_chunks
+#define png_set_invalid FOXIT_png_set_invalid
+#define png_read_png FOXIT_png_read_png
+#define png_write_png FOXIT_png_write_png
+#define png_permit_mng_features FOXIT_png_permit_mng_features
+#define png_set_strip_error_numbers FOXIT_png_set_strip_error_numbers
+#define png_set_user_limits FOXIT_png_set_user_limits
+#define png_get_user_width_max FOXIT_png_get_user_width_max
+#define png_get_user_height_max FOXIT_png_get_user_height_max
+#define png_set_chunk_cache_max FOXIT_png_set_chunk_cache_max
+#define png_get_chunk_cache_max FOXIT_png_get_chunk_cache_max
+#define png_set_chunk_malloc_max FOXIT_png_set_chunk_malloc_max
+#define png_get_chunk_malloc_max FOXIT_png_get_chunk_malloc_max
+#define png_get_pixels_per_inch FOXIT_png_get_pixels_per_inch
+#define png_get_x_pixels_per_inch FOXIT_png_get_x_pixels_per_inch
+#define png_get_y_pixels_per_inch FOXIT_png_get_y_pixels_per_inch
+#define png_get_x_offset_inches FOXIT_png_get_x_offset_inches
+#define png_get_x_offset_inches_fixed FOXIT_png_get_x_offset_inches_fixed
+#define png_get_y_offset_inches FOXIT_png_get_y_offset_inches
+#define png_get_y_offset_inches_fixed FOXIT_png_get_y_offset_inches_fixed
+#define png_get_pHYs_dpi FOXIT_png_get_pHYs_dpi
+#define png_get_io_state FOXIT_png_get_io_state
+#define png_get_io_chunk_name FOXIT_png_get_io_chunk_name
+#define png_get_io_chunk_type FOXIT_png_get_io_chunk_type
+#define png_get_uint_31 FOXIT_png_get_uint_31
+#define png_save_uint_32 FOXIT_png_save_uint_32
+#define png_save_int_32 FOXIT_png_save_int_32
+#define png_save_uint_16 FOXIT_png_save_uint_16
+#define png_image_begin_read_from_file FOXIT_png_image_begin_read_from_file
+#define png_image_begin_read_from_stdio FOXIT_png_image_begin_read_from_stdio
+#define png_image_begin_read_from_memory FOXIT_png_image_begin_read_from_memory
+#define png_image_finish_read FOXIT_png_image_finish_read
+#define png_image_free FOXIT_png_image_free
+#define png_image_write_to_file FOXIT_png_image_write_to_file
+#define png_image_write_to_stdio FOXIT_png_image_write_to_stdio
+#define png_set_check_for_invalid_index FOXIT_png_set_check_for_invalid_index
+#define png_get_palette_max FOXIT_png_get_palette_max
+#define png_set_option FOXIT_png_set_option
+
+#define png_set_strip_16 FOXIT_png_set_strip_16
+#define png_64bit_product FOXIT_png_64bit_product
+#define png_check_cHRM_fixed FOXIT_png_check_cHRM_fixed
+#define png_free FOXIT_png_free
+#define png_free_default FOXIT_png_free_default
+#define png_get_mem_ptr FOXIT_png_get_mem_ptr
+#define png_malloc FOXIT_png_malloc
+#define png_malloc_default FOXIT_png_malloc_default
+#define png_malloc_warn FOXIT_png_malloc_warn
+#define png_memcpy_check FOXIT_png_memcpy_check
+#define png_memset_check FOXIT_png_memset_check
+#define png_pass_dsp_mask FOXIT_png_pass_dsp_mask
+#define png_pass_inc FOXIT_png_pass_inc
+#define png_pass_mask FOXIT_png_pass_mask
+#define png_pass_start FOXIT_png_pass_start
+#define png_pass_yinc FOXIT_png_pass_yinc
+#define png_pass_ystart FOXIT_png_pass_ystart
+#define png_set_mem_fn FOXIT_png_set_mem_fn
+
+/* Version information for png.h - this should match the version in png.c */
+#define PNG_LIBPNG_VER_STRING "1.6.3"
+#define PNG_HEADER_VERSION_STRING \
+ " libpng version 1.6.3 - July 18, 2013\n"
+
+#define PNG_LIBPNG_VER_SONUM 16
+#define PNG_LIBPNG_VER_DLLNUM 16
+
+/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
+#define PNG_LIBPNG_VER_MAJOR 1
+#define PNG_LIBPNG_VER_MINOR 6
+#define PNG_LIBPNG_VER_RELEASE 3
+
+/* This should match the numeric part of the final component of
+ * PNG_LIBPNG_VER_STRING, omitting any leading zero:
+ */
+
+#define PNG_LIBPNG_VER_BUILD 0
+
+/* Release Status */
+#define PNG_LIBPNG_BUILD_ALPHA 1
+#define PNG_LIBPNG_BUILD_BETA 2
+#define PNG_LIBPNG_BUILD_RC 3
+#define PNG_LIBPNG_BUILD_STABLE 4
+#define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7
+
+/* Release-Specific Flags */
+#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with
+ PNG_LIBPNG_BUILD_STABLE only */
+#define PNG_LIBPNG_BUILD_PRIVATE 16 /* Cannot be OR'ed with
+ PNG_LIBPNG_BUILD_SPECIAL */
+#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
+ PNG_LIBPNG_BUILD_PRIVATE */
+
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
+
+/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
+ * We must not include leading zeros.
+ * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
+ * version 1.0.0 was mis-numbered 100 instead of 10000). From
+ * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
+ */
+#define PNG_LIBPNG_VER 10603 /* 1.6.3 */
+
+/* Library configuration: these options cannot be changed after
+ * the library has been built.
+ */
+#ifndef PNGLCONF_H
+ /* If pnglibconf.h is missing, you can
+ * copy scripts/pnglibconf.h.prebuilt to pnglibconf.h
+ */
+# include "pnglibconf.h"
+#endif
+
+#ifndef PNG_VERSION_INFO_ONLY
+ /* Machine specific configuration. */
+# include "pngconf.h"
+#endif
+
+/*
+ * Added at libpng-1.2.8
+ *
+ * Ref MSDN: Private as priority over Special
+ * VS_FF_PRIVATEBUILD File *was not* built using standard release
+ * procedures. If this value is given, the StringFileInfo block must
+ * contain a PrivateBuild string.
+ *
+ * VS_FF_SPECIALBUILD File *was* built by the original company using
+ * standard release procedures but is a variation of the standard
+ * file of the same version number. If this value is given, the
+ * StringFileInfo block must contain a SpecialBuild string.
+ */
+
+#ifdef PNG_USER_PRIVATEBUILD /* From pnglibconf.h */
+# define PNG_LIBPNG_BUILD_TYPE \
+ (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_PRIVATE)
+#else
+# ifdef PNG_LIBPNG_SPECIALBUILD
+# define PNG_LIBPNG_BUILD_TYPE \
+ (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_SPECIAL)
+# else
+# define PNG_LIBPNG_BUILD_TYPE (PNG_LIBPNG_BUILD_BASE_TYPE)
+# endif
+#endif
+
+#ifndef PNG_VERSION_INFO_ONLY
+
+/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* Version information for C files, stored in png.c. This had better match
+ * the version above.
+ */
+#define png_libpng_ver png_get_header_ver(NULL)
+
+/* This file is arranged in several sections:
+ *
+ * 1. Any configuration options that can be specified by for the application
+ * code when it is built. (Build time configuration is in pnglibconf.h)
+ * 2. Type definitions (base types are defined in pngconf.h), structure
+ * definitions.
+ * 3. Exported library functions.
+ * 4. Simplified API.
+ *
+ * The library source code has additional files (principally pngpriv.h) that
+ * allow configuration of the library.
+ */
+/* Section 1: run time configuration
+ * See pnglibconf.h for build time configuration
+ *
+ * Run time configuration allows the application to choose between
+ * implementations of certain arithmetic APIs. The default is set
+ * at build time and recorded in pnglibconf.h, but it is safe to
+ * override these (and only these) settings. Note that this won't
+ * change what the library does, only application code, and the
+ * settings can (and probably should) be made on a per-file basis
+ * by setting the #defines before including png.h
+ *
+ * Use macros to read integers from PNG data or use the exported
+ * functions?
+ * PNG_USE_READ_MACROS: use the macros (see below) Note that
+ * the macros evaluate their argument multiple times.
+ * PNG_NO_USE_READ_MACROS: call the relevant library function.
+ *
+ * Use the alternative algorithm for compositing alpha samples that
+ * does not use division?
+ * PNG_READ_COMPOSITE_NODIV_SUPPORTED: use the 'no division'
+ * algorithm.
+ * PNG_NO_READ_COMPOSITE_NODIV: use the 'division' algorithm.
+ *
+ * How to handle benign errors if PNG_ALLOW_BENIGN_ERRORS is
+ * false?
+ * PNG_ALLOW_BENIGN_ERRORS: map calls to the benign error
+ * APIs to png_warning.
+ * Otherwise the calls are mapped to png_error.
+ */
+
+/* Section 2: type definitions, including structures and compile time
+ * constants.
+ * See pngconf.h for base types that vary by machine/system
+ */
+
+/* This triggers a compiler error in png.c, if png.c and png.h
+ * do not agree upon the version number.
+ */
+typedef char* png_libpng_version_1_6_3;
+
+/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
+ *
+ * png_struct is the cache of information used while reading or writing a single
+ * PNG file. One of these is always required, although the simplified API
+ * (below) hides the creation and destruction of it.
+ */
+typedef struct png_struct_def png_struct;
+typedef const png_struct * png_const_structp;
+typedef png_struct * png_structp;
+typedef png_struct * * png_structpp;
+
+/* png_info contains information read from or to be written to a PNG file. One
+ * or more of these must exist while reading or creating a PNG file. The
+ * information is not used by libpng during read but is used to control what
+ * gets written when a PNG file is created. "png_get_" function calls read
+ * information during read and "png_set_" functions calls write information
+ * when creating a PNG.
+ * been moved into a separate header file that is not accessible to
+ * applications. Read libpng-manual.txt or libpng.3 for more info.
+ */
+typedef struct png_info_def png_info;
+typedef png_info * png_infop;
+typedef const png_info * png_const_infop;
+typedef png_info * * png_infopp;
+
+/* Types with names ending 'p' are pointer types. The corresponding types with
+ * names ending 'rp' are identical pointer types except that the pointer is
+ * marked 'restrict', which means that it is the only pointer to the object
+ * passed to the function. Applications should not use the 'restrict' types;
+ * it is always valid to pass 'p' to a pointer with a function argument of the
+ * corresponding 'rp' type. Different compilers have different rules with
+ * regard to type matching in the presence of 'restrict'. For backward
+ * compatibility libpng callbacks never have 'restrict' in their parameters and,
+ * consequentially, writing portable application code is extremely difficult if
+ * an attempt is made to use 'restrict'.
+ */
+typedef png_struct * PNG_RESTRICT png_structrp;
+typedef const png_struct * PNG_RESTRICT png_const_structrp;
+typedef png_info * PNG_RESTRICT png_inforp;
+typedef const png_info * PNG_RESTRICT png_const_inforp;
+
+/* Three color definitions. The order of the red, green, and blue, (and the
+ * exact size) is not important, although the size of the fields need to
+ * be png_byte or png_uint_16 (as defined below).
+ */
+typedef struct png_color_struct
+{
+ png_byte red;
+ png_byte green;
+ png_byte blue;
+} png_color;
+typedef png_color * png_colorp;
+typedef const png_color * png_const_colorp;
+typedef png_color * * png_colorpp;
+
+typedef struct png_color_16_struct
+{
+ png_byte index; /* used for palette files */
+ png_uint_16 red; /* for use in red green blue files */
+ png_uint_16 green;
+ png_uint_16 blue;
+ png_uint_16 gray; /* for use in grayscale files */
+} png_color_16;
+typedef png_color_16 * png_color_16p;
+typedef const png_color_16 * png_const_color_16p;
+typedef png_color_16 * * png_color_16pp;
+
+typedef struct png_color_8_struct
+{
+ png_byte red; /* for use in red green blue files */
+ png_byte green;
+ png_byte blue;
+ png_byte gray; /* for use in grayscale files */
+ png_byte alpha; /* for alpha channel files */
+} png_color_8;
+typedef png_color_8 * png_color_8p;
+typedef const png_color_8 * png_const_color_8p;
+typedef png_color_8 * * png_color_8pp;
+
+/*
+ * The following two structures are used for the in-core representation
+ * of sPLT chunks.
+ */
+typedef struct png_sPLT_entry_struct
+{
+ png_uint_16 red;
+ png_uint_16 green;
+ png_uint_16 blue;
+ png_uint_16 alpha;
+ png_uint_16 frequency;
+} png_sPLT_entry;
+typedef png_sPLT_entry * png_sPLT_entryp;
+typedef const png_sPLT_entry * png_const_sPLT_entryp;
+typedef png_sPLT_entry * * png_sPLT_entrypp;
+
+/* When the depth of the sPLT palette is 8 bits, the color and alpha samples
+ * occupy the LSB of their respective members, and the MSB of each member
+ * is zero-filled. The frequency member always occupies the full 16 bits.
+ */
+
+typedef struct png_sPLT_struct
+{
+ png_charp name; /* palette name */
+ png_byte depth; /* depth of palette samples */
+ png_sPLT_entryp entries; /* palette entries */
+ png_int_32 nentries; /* number of palette entries */
+} png_sPLT_t;
+typedef png_sPLT_t * png_sPLT_tp;
+typedef const png_sPLT_t * png_const_sPLT_tp;
+typedef png_sPLT_t * * png_sPLT_tpp;
+
+#ifdef PNG_TEXT_SUPPORTED
+/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file,
+ * and whether that contents is compressed or not. The "key" field
+ * points to a regular zero-terminated C string. The "text" fields can be a
+ * regular C string, an empty string, or a NULL pointer.
+ * However, the structure returned by png_get_text() will always contain
+ * the "text" field as a regular zero-terminated C string (possibly
+ * empty), never a NULL pointer, so it can be safely used in printf() and
+ * other string-handling functions. Note that the "itxt_length", "lang", and
+ * "lang_key" members of the structure only exist when the library is built
+ * with iTXt chunk support. Prior to libpng-1.4.0 the library was built by
+ * default without iTXt support. Also note that when iTXt *is* supported,
+ * the "lang" and "lang_key" fields contain NULL pointers when the
+ * "compression" field contains * PNG_TEXT_COMPRESSION_NONE or
+ * PNG_TEXT_COMPRESSION_zTXt. Note that the "compression value" is not the
+ * same as what appears in the PNG tEXt/zTXt/iTXt chunk's "compression flag"
+ * which is always 0 or 1, or its "compression method" which is always 0.
+ */
+typedef struct png_text_struct
+{
+ int compression; /* compression value:
+ -1: tEXt, none
+ 0: zTXt, deflate
+ 1: iTXt, none
+ 2: iTXt, deflate */
+ png_charp key; /* keyword, 1-79 character description of "text" */
+ png_charp text; /* comment, may be an empty string (ie "")
+ or a NULL pointer */
+ png_size_t text_length; /* length of the text string */
+ png_size_t itxt_length; /* length of the itxt string */
+ png_charp lang; /* language code, 0-79 characters
+ or a NULL pointer */
+ png_charp lang_key; /* keyword translated UTF-8 string, 0 or more
+ chars or a NULL pointer */
+} png_text;
+typedef png_text * png_textp;
+typedef const png_text * png_const_textp;
+typedef png_text * * png_textpp;
+#endif
+
+/* Supported compression types for text in PNG files (tEXt, and zTXt).
+ * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. */
+#define PNG_TEXT_COMPRESSION_NONE_WR -3
+#define PNG_TEXT_COMPRESSION_zTXt_WR -2
+#define PNG_TEXT_COMPRESSION_NONE -1
+#define PNG_TEXT_COMPRESSION_zTXt 0
+#define PNG_ITXT_COMPRESSION_NONE 1
+#define PNG_ITXT_COMPRESSION_zTXt 2
+#define PNG_TEXT_COMPRESSION_LAST 3 /* Not a valid value */
+
+/* png_time is a way to hold the time in an machine independent way.
+ * Two conversions are provided, both from time_t and struct tm. There
+ * is no portable way to convert to either of these structures, as far
+ * as I know. If you know of a portable way, send it to me. As a side
+ * note - PNG has always been Year 2000 compliant!
+ */
+typedef struct png_time_struct
+{
+ png_uint_16 year; /* full year, as in, 1995 */
+ png_byte month; /* month of year, 1 - 12 */
+ png_byte day; /* day of month, 1 - 31 */
+ png_byte hour; /* hour of day, 0 - 23 */
+ png_byte minute; /* minute of hour, 0 - 59 */
+ png_byte second; /* second of minute, 0 - 60 (for leap seconds) */
+} png_time;
+typedef png_time * png_timep;
+typedef const png_time * png_const_timep;
+typedef png_time * * png_timepp;
+
+#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+/* png_unknown_chunk is a structure to hold queued chunks for which there is
+ * no specific support. The idea is that we can use this to queue
+ * up private chunks for output even though the library doesn't actually
+ * know about their semantics.
+ *
+ * The data in the structure is set by libpng on read and used on write.
+ */
+typedef struct png_unknown_chunk_t
+{
+ png_byte name[5]; /* Textual chunk name with '\0' terminator */
+ png_byte *data; /* Data, should not be modified on read! */
+ png_size_t size;
+
+ /* On write 'location' must be set using the flag values listed below.
+ * Notice that on read it is set by libpng however the values stored have
+ * more bits set than are listed below. Always treat the value as a
+ * bitmask. On write set only one bit - setting multiple bits may cause the
+ * chunk to be written in multiple places.
+ */
+ png_byte location; /* mode of operation at read time */
+}
+png_unknown_chunk;
+
+typedef png_unknown_chunk * png_unknown_chunkp;
+typedef const png_unknown_chunk * png_const_unknown_chunkp;
+typedef png_unknown_chunk * * png_unknown_chunkpp;
+#endif
+
+/* Flag values for the unknown chunk location byte. */
+#define PNG_HAVE_IHDR 0x01
+#define PNG_HAVE_PLTE 0x02
+#define PNG_AFTER_IDAT 0x08
+
+/* Maximum positive integer used in PNG is (2^31)-1 */
+#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL)
+#define PNG_UINT_32_MAX ((png_uint_32)(-1))
+#define PNG_SIZE_MAX ((png_size_t)(-1))
+
+/* These are constants for fixed point values encoded in the
+ * PNG specification manner (x100000)
+ */
+#define PNG_FP_1 100000
+#define PNG_FP_HALF 50000
+#define PNG_FP_MAX ((png_fixed_point)0x7fffffffL)
+#define PNG_FP_MIN (-PNG_FP_MAX)
+
+/* These describe the color_type field in png_info. */
+/* color type masks */
+#define PNG_COLOR_MASK_PALETTE 1
+#define PNG_COLOR_MASK_COLOR 2
+#define PNG_COLOR_MASK_ALPHA 4
+
+/* color types. Note that not all combinations are legal */
+#define PNG_COLOR_TYPE_GRAY 0
+#define PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE)
+#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR)
+#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA)
+#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA)
+/* aliases */
+#define PNG_COLOR_TYPE_RGBA PNG_COLOR_TYPE_RGB_ALPHA
+#define PNG_COLOR_TYPE_GA PNG_COLOR_TYPE_GRAY_ALPHA
+
+/* This is for compression type. PNG 1.0-1.2 only define the single type. */
+#define PNG_COMPRESSION_TYPE_BASE 0 /* Deflate method 8, 32K window */
+#define PNG_COMPRESSION_TYPE_DEFAULT PNG_COMPRESSION_TYPE_BASE
+
+/* This is for filter type. PNG 1.0-1.2 only define the single type. */
+#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */
+#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */
+#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE
+
+/* These are for the interlacing type. These values should NOT be changed. */
+#define PNG_INTERLACE_NONE 0 /* Non-interlaced image */
+#define PNG_INTERLACE_ADAM7 1 /* Adam7 interlacing */
+#define PNG_INTERLACE_LAST 2 /* Not a valid value */
+
+/* These are for the oFFs chunk. These values should NOT be changed. */
+#define PNG_OFFSET_PIXEL 0 /* Offset in pixels */
+#define PNG_OFFSET_MICROMETER 1 /* Offset in micrometers (1/10^6 meter) */
+#define PNG_OFFSET_LAST 2 /* Not a valid value */
+
+/* These are for the pCAL chunk. These values should NOT be changed. */
+#define PNG_EQUATION_LINEAR 0 /* Linear transformation */
+#define PNG_EQUATION_BASE_E 1 /* Exponential base e transform */
+#define PNG_EQUATION_ARBITRARY 2 /* Arbitrary base exponential transform */
+#define PNG_EQUATION_HYPERBOLIC 3 /* Hyperbolic sine transformation */
+#define PNG_EQUATION_LAST 4 /* Not a valid value */
+
+/* These are for the sCAL chunk. These values should NOT be changed. */
+#define PNG_SCALE_UNKNOWN 0 /* unknown unit (image scale) */
+#define PNG_SCALE_METER 1 /* meters per pixel */
+#define PNG_SCALE_RADIAN 2 /* radians per pixel */
+#define PNG_SCALE_LAST 3 /* Not a valid value */
+
+/* These are for the pHYs chunk. These values should NOT be changed. */
+#define PNG_RESOLUTION_UNKNOWN 0 /* pixels/unknown unit (aspect ratio) */
+#define PNG_RESOLUTION_METER 1 /* pixels/meter */
+#define PNG_RESOLUTION_LAST 2 /* Not a valid value */
+
+/* These are for the sRGB chunk. These values should NOT be changed. */
+#define PNG_sRGB_INTENT_PERCEPTUAL 0
+#define PNG_sRGB_INTENT_RELATIVE 1
+#define PNG_sRGB_INTENT_SATURATION 2
+#define PNG_sRGB_INTENT_ABSOLUTE 3
+#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */
+
+/* This is for text chunks */
+#define PNG_KEYWORD_MAX_LENGTH 79
+
+/* Maximum number of entries in PLTE/sPLT/tRNS arrays */
+#define PNG_MAX_PALETTE_LENGTH 256
+
+/* These determine if an ancillary chunk's data has been successfully read
+ * from the PNG header, or if the application has filled in the corresponding
+ * data in the info_struct to be written into the output file. The values
+ * of the PNG_INFO_<chunk> defines should NOT be changed.
+ */
+#define PNG_INFO_gAMA 0x0001
+#define PNG_INFO_sBIT 0x0002
+#define PNG_INFO_cHRM 0x0004
+#define PNG_INFO_PLTE 0x0008
+#define PNG_INFO_tRNS 0x0010
+#define PNG_INFO_bKGD 0x0020
+#define PNG_INFO_hIST 0x0040
+#define PNG_INFO_pHYs 0x0080
+#define PNG_INFO_oFFs 0x0100
+#define PNG_INFO_tIME 0x0200
+#define PNG_INFO_pCAL 0x0400
+#define PNG_INFO_sRGB 0x0800 /* GR-P, 0.96a */
+#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */
+#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */
+#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
+#define PNG_INFO_IDAT 0x8000 /* ESR, 1.0.6 */
+
+/* This is used for the transformation routines, as some of them
+ * change these values for the row. It also should enable using
+ * the routines for other purposes.
+ */
+typedef struct png_row_info_struct
+{
+ png_uint_32 width; /* width of row */
+ png_size_t rowbytes; /* number of bytes in row */
+ png_byte color_type; /* color type of row */
+ png_byte bit_depth; /* bit depth of row */
+ png_byte channels; /* number of channels (1, 2, 3, or 4) */
+ png_byte pixel_depth; /* bits per pixel (depth * channels) */
+} png_row_info;
+
+typedef png_row_info * png_row_infop;
+typedef png_row_info * * png_row_infopp;
+
+/* These are the function types for the I/O functions and for the functions
+ * that allow the user to override the default I/O functions with his or her
+ * own. The png_error_ptr type should match that of user-supplied warning
+ * and error functions, while the png_rw_ptr type should match that of the
+ * user read/write data functions. Note that the 'write' function must not
+ * modify the buffer it is passed. The 'read' function, on the other hand, is
+ * expected to return the read data in the buffer.
+ */
+typedef PNG_CALLBACK(void, *png_error_ptr, (png_structp, png_const_charp));
+typedef PNG_CALLBACK(void, *png_rw_ptr, (png_structp, png_bytep, png_size_t));
+typedef PNG_CALLBACK(void, *png_flush_ptr, (png_structp));
+typedef PNG_CALLBACK(void, *png_read_status_ptr, (png_structp, png_uint_32,
+ int));
+typedef PNG_CALLBACK(void, *png_write_status_ptr, (png_structp, png_uint_32,
+ int));
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));
+typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));
+
+/* The following callback receives png_uint_32 row_number, int pass for the
+ * png_bytep data of the row. When transforming an interlaced image the
+ * row number is the row number within the sub-image of the interlace pass, so
+ * the value will increase to the height of the sub-image (not the full image)
+ * then reset to 0 for the next pass.
+ *
+ * Use PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
+ * find the output pixel (x,y) given an interlaced sub-image pixel
+ * (row,col,pass). (See below for these macros.)
+ */
+typedef PNG_CALLBACK(void, *png_progressive_row_ptr, (png_structp, png_bytep,
+ png_uint_32, int));
+#endif
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+typedef PNG_CALLBACK(void, *png_user_transform_ptr, (png_structp, png_row_infop,
+ png_bytep));
+#endif
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+typedef PNG_CALLBACK(int, *png_user_chunk_ptr, (png_structp,
+ png_unknown_chunkp));
+#endif
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+/* not used anywhere */
+/* typedef PNG_CALLBACK(void, *png_unknown_chunk_ptr, (png_structp)); */
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+/* This must match the function definition in <setjmp.h>, and the application
+ * must include this before png.h to obtain the definition of jmp_buf. The
+ * function is required to be PNG_NORETURN, but this is not checked. If the
+ * function does return the application will crash via an abort() or similar
+ * system level call.
+ *
+ * If you get a warning here while building the library you may need to make
+ * changes to ensure that pnglibconf.h records the calling convention used by
+ * your compiler. This may be very difficult - try using a different compiler
+ * to build the library!
+ */
+PNG_FUNCTION(void, (PNGCAPI *png_longjmp_ptr), PNGARG((jmp_buf, int)), typedef);
+#endif
+
+/* Transform masks for the high-level interface */
+#define PNG_TRANSFORM_IDENTITY 0x0000 /* read and write */
+#define PNG_TRANSFORM_STRIP_16 0x0001 /* read only */
+#define PNG_TRANSFORM_STRIP_ALPHA 0x0002 /* read only */
+#define PNG_TRANSFORM_PACKING 0x0004 /* read and write */
+#define PNG_TRANSFORM_PACKSWAP 0x0008 /* read and write */
+#define PNG_TRANSFORM_EXPAND 0x0010 /* read only */
+#define PNG_TRANSFORM_INVERT_MONO 0x0020 /* read and write */
+#define PNG_TRANSFORM_SHIFT 0x0040 /* read and write */
+#define PNG_TRANSFORM_BGR 0x0080 /* read and write */
+#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */
+#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */
+#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */
+#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* write only */
+/* Added to libpng-1.2.34 */
+#define PNG_TRANSFORM_STRIP_FILLER_BEFORE PNG_TRANSFORM_STRIP_FILLER
+#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */
+/* Added to libpng-1.4.0 */
+#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
+/* Added to libpng-1.5.4 */
+#define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */
+#define PNG_TRANSFORM_SCALE_16 0x8000 /* read only */
+
+/* Flags for MNG supported features */
+#define PNG_FLAG_MNG_EMPTY_PLTE 0x01
+#define PNG_FLAG_MNG_FILTER_64 0x04
+#define PNG_ALL_MNG_FEATURES 0x05
+
+/* NOTE: prior to 1.5 these functions had no 'API' style declaration,
+ * this allowed the zlib default functions to be used on Windows
+ * platforms. In 1.5 the zlib default malloc (which just calls malloc and
+ * ignores the first argument) should be completely compatible with the
+ * following.
+ */
+typedef PNG_CALLBACK(png_voidp, *png_malloc_ptr, (png_structp,
+ png_alloc_size_t));
+typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp));
+
+/* Section 3: exported functions
+ * Here are the function definitions most commonly used. This is not
+ * the place to find out how to use libpng. See libpng-manual.txt for the
+ * full explanation, see example.c for the summary. This just provides
+ * a simple one line description of the use of each function.
+ *
+ * The PNG_EXPORT() and PNG_EXPORTA() macros used below are defined in
+ * pngconf.h and in the *.dfn files in the scripts directory.
+ *
+ * PNG_EXPORT(ordinal, type, name, (args));
+ *
+ * ordinal: ordinal that is used while building
+ * *.def files. The ordinal value is only
+ * relevant when preprocessing png.h with
+ * the *.dfn files for building symbol table
+ * entries, and are removed by pngconf.h.
+ * type: return type of the function
+ * name: function name
+ * args: function arguments, with types
+ *
+ * When we wish to append attributes to a function prototype we use
+ * the PNG_EXPORTA() macro instead.
+ *
+ * PNG_EXPORTA(ordinal, type, name, (args), attributes);
+ *
+ * ordinal, type, name, and args: same as in PNG_EXPORT().
+ * attributes: function attributes
+ */
+
+/* Returns the version number of the library */
+PNG_EXPORT(1, png_uint_32, png_access_version_number, (void));
+
+/* Tell lib we have already handled the first <num_bytes> magic bytes.
+ * Handling more than 8 bytes from the beginning of the file is an error.
+ */
+PNG_EXPORT(2, void, png_set_sig_bytes, (png_structrp png_ptr, int num_bytes));
+
+/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
+ * PNG file. Returns zero if the supplied bytes match the 8-byte PNG
+ * signature, and non-zero otherwise. Having num_to_check == 0 or
+ * start > 7 will always fail (ie return non-zero).
+ */
+PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, png_size_t start,
+ png_size_t num_to_check));
+
+/* Simple signature checking function. This is the same as calling
+ * png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
+ */
+#define png_check_sig(sig, n) !png_sig_cmp((sig), 0, (n))
+
+/* Allocate and initialize png_ptr struct for reading, and any other memory. */
+PNG_EXPORTA(4, png_structp, png_create_read_struct,
+ (png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn),
+ PNG_ALLOCATED);
+
+/* Allocate and initialize png_ptr struct for writing, and any other memory */
+PNG_EXPORTA(5, png_structp, png_create_write_struct,
+ (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warn_fn),
+ PNG_ALLOCATED);
+
+PNG_EXPORT(6, png_size_t, png_get_compression_buffer_size,
+ (png_const_structrp png_ptr));
+
+PNG_EXPORT(7, void, png_set_compression_buffer_size, (png_structrp png_ptr,
+ png_size_t size));
+
+/* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp
+ * match up.
+ */
+#ifdef PNG_SETJMP_SUPPORTED
+/* This function returns the jmp_buf built in to *png_ptr. It must be
+ * supplied with an appropriate 'longjmp' function to use on that jmp_buf
+ * unless the default error function is overridden in which case NULL is
+ * acceptable. The size of the jmp_buf is checked against the actual size
+ * allocated by the library - the call will return NULL on a mismatch
+ * indicating an ABI mismatch.
+ */
+PNG_EXPORT(8, jmp_buf*, png_set_longjmp_fn, (png_structrp png_ptr,
+ png_longjmp_ptr longjmp_fn, size_t jmp_buf_size));
+# define png_jmpbuf(png_ptr) \
+ (*png_set_longjmp_fn((png_ptr), longjmp, (sizeof (jmp_buf))))
+#else
+# define png_jmpbuf(png_ptr) \
+ (LIBPNG_WAS_COMPILED_WITH__PNG_NO_SETJMP)
+#endif
+/* This function should be used by libpng applications in place of
+ * longjmp(png_ptr->jmpbuf, val). If longjmp_fn() has been set, it
+ * will use it; otherwise it will call PNG_ABORT(). This function was
+ * added in libpng-1.5.0.
+ */
+PNG_EXPORTA(9, void, png_longjmp, (png_const_structrp png_ptr, int val),
+ PNG_NORETURN);
+
+#ifdef PNG_READ_SUPPORTED
+/* Reset the compression stream */
+PNG_EXPORTA(10, int, png_reset_zstream, (png_structrp png_ptr), PNG_DEPRECATED);
+#endif
+
+/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */
+#ifdef PNG_USER_MEM_SUPPORTED
+PNG_EXPORTA(11, png_structp, png_create_read_struct_2,
+ (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warn_fn,
+ png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn),
+ PNG_ALLOCATED);
+PNG_EXPORTA(12, png_structp, png_create_write_struct_2,
+ (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warn_fn,
+ png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn),
+ PNG_ALLOCATED);
+#endif
+
+/* Write the PNG file signature. */
+PNG_EXPORT(13, void, png_write_sig, (png_structrp png_ptr));
+
+/* Write a PNG chunk - size, type, (optional) data, CRC. */
+PNG_EXPORT(14, void, png_write_chunk, (png_structrp png_ptr, png_const_bytep
+ chunk_name, png_const_bytep data, png_size_t length));
+
+/* Write the start of a PNG chunk - length and chunk name. */
+PNG_EXPORT(15, void, png_write_chunk_start, (png_structrp png_ptr,
+ png_const_bytep chunk_name, png_uint_32 length));
+
+/* Write the data of a PNG chunk started with png_write_chunk_start(). */
+PNG_EXPORT(16, void, png_write_chunk_data, (png_structrp png_ptr,
+ png_const_bytep data, png_size_t length));
+
+/* Finish a chunk started with png_write_chunk_start() (includes CRC). */
+PNG_EXPORT(17, void, png_write_chunk_end, (png_structrp png_ptr));
+
+/* Allocate and initialize the info structure */
+PNG_EXPORTA(18, png_infop, png_create_info_struct, (png_const_structrp png_ptr),
+ PNG_ALLOCATED);
+
+/* DEPRECATED: this function allowed init structures to be created using the
+ * default allocation method (typically malloc). Use is deprecated in 1.6.0 and
+ * the API will be removed in the future.
+ */
+PNG_EXPORTA(19, void, png_info_init_3, (png_infopp info_ptr,
+ png_size_t png_info_struct_size), PNG_DEPRECATED);
+
+/* Writes all the PNG information before the image. */
+PNG_EXPORT(20, void, png_write_info_before_PLTE,
+ (png_structrp png_ptr, png_const_inforp info_ptr));
+PNG_EXPORT(21, void, png_write_info,
+ (png_structrp png_ptr, png_const_inforp info_ptr));
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the information before the actual image data. */
+PNG_EXPORT(22, void, png_read_info,
+ (png_structrp png_ptr, png_inforp info_ptr));
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ /* Convert to a US string format: there is no localization support in this
+ * routine. The original implementation used a 29 character buffer in
+ * png_struct, this will be removed in future versions.
+ */
+#if PNG_LIBPNG_VER < 10700
+/* To do: remove this from libpng17 (and from libpng17/png.c and pngstruct.h) */
+PNG_EXPORTA(23, png_const_charp, png_convert_to_rfc1123, (png_structrp png_ptr,
+ png_const_timep ptime),PNG_DEPRECATED);
+#endif
+PNG_EXPORT(241, int, png_convert_to_rfc1123_buffer, (char out[29],
+ png_const_timep ptime));
+#endif
+
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+/* Convert from a struct tm to png_time */
+PNG_EXPORT(24, void, png_convert_from_struct_tm, (png_timep ptime,
+ const struct tm * ttime));
+
+/* Convert from time_t to png_time. Uses gmtime() */
+PNG_EXPORT(25, void, png_convert_from_time_t, (png_timep ptime, time_t ttime));
+#endif /* PNG_CONVERT_tIME_SUPPORTED */
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */
+PNG_EXPORT(26, void, png_set_expand, (png_structrp png_ptr));
+PNG_EXPORT(27, void, png_set_expand_gray_1_2_4_to_8, (png_structrp png_ptr));
+PNG_EXPORT(28, void, png_set_palette_to_rgb, (png_structrp png_ptr));
+PNG_EXPORT(29, void, png_set_tRNS_to_alpha, (png_structrp png_ptr));
+#endif
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+/* Expand to 16-bit channels, forces conversion of palette to RGB and expansion
+ * of a tRNS chunk if present.
+ */
+PNG_EXPORT(221, void, png_set_expand_16, (png_structrp png_ptr));
+#endif
+
+#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
+/* Use blue, green, red order for pixels. */
+PNG_EXPORT(30, void, png_set_bgr, (png_structrp png_ptr));
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+/* Expand the grayscale to 24-bit RGB if necessary. */
+PNG_EXPORT(31, void, png_set_gray_to_rgb, (png_structrp png_ptr));
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+/* Reduce RGB to grayscale. */
+#define PNG_ERROR_ACTION_NONE 1
+#define PNG_ERROR_ACTION_WARN 2
+#define PNG_ERROR_ACTION_ERROR 3
+#define PNG_RGB_TO_GRAY_DEFAULT (-1)/*for red/green coefficients*/
+
+PNG_FP_EXPORT(32, void, png_set_rgb_to_gray, (png_structrp png_ptr,
+ int error_action, double red, double green))
+PNG_FIXED_EXPORT(33, void, png_set_rgb_to_gray_fixed, (png_structrp png_ptr,
+ int error_action, png_fixed_point red, png_fixed_point green))
+
+PNG_EXPORT(34, png_byte, png_get_rgb_to_gray_status, (png_const_structrp
+ png_ptr));
+#endif
+
+#ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
+PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth,
+ png_colorp palette));
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+/* How the alpha channel is interpreted - this affects how the color channels of
+ * a PNG file are returned when an alpha channel, or tRNS chunk in a palette
+ * file, is present.
+ *
+ * This has no effect on the way pixels are written into a PNG output
+ * datastream. The color samples in a PNG datastream are never premultiplied
+ * with the alpha samples.
+ *
+ * The default is to return data according to the PNG specification: the alpha
+ * channel is a linear measure of the contribution of the pixel to the
+ * corresponding composited pixel. The gamma encoded color channels must be
+ * scaled according to the contribution and to do this it is necessary to undo
+ * the encoding, scale the color values, perform the composition and reencode
+ * the values. This is the 'PNG' mode.
+ *
+ * The alternative is to 'associate' the alpha with the color information by
+ * storing color channel values that have been scaled by the alpha. The
+ * advantage is that the color channels can be resampled (the image can be
+ * scaled) in this form. The disadvantage is that normal practice is to store
+ * linear, not (gamma) encoded, values and this requires 16-bit channels for
+ * still images rather than the 8-bit channels that are just about sufficient if
+ * gamma encoding is used. In addition all non-transparent pixel values,
+ * including completely opaque ones, must be gamma encoded to produce the final
+ * image. This is the 'STANDARD', 'ASSOCIATED' or 'PREMULTIPLIED' mode (the
+ * latter being the two common names for associated alpha color channels.)
+ *
+ * Since it is not necessary to perform arithmetic on opaque color values so
+ * long as they are not to be resampled and are in the final color space it is
+ * possible to optimize the handling of alpha by storing the opaque pixels in
+ * the PNG format (adjusted for the output color space) while storing partially
+ * opaque pixels in the standard, linear, format. The accuracy required for
+ * standard alpha composition is relatively low, because the pixels are
+ * isolated, therefore typically the accuracy loss in storing 8-bit linear
+ * values is acceptable. (This is not true if the alpha channel is used to
+ * simulate transparency over large areas - use 16 bits or the PNG mode in
+ * this case!) This is the 'OPTIMIZED' mode. For this mode a pixel is
+ * treated as opaque only if the alpha value is equal to the maximum value.
+ *
+ * The final choice is to gamma encode the alpha channel as well. This is
+ * broken because, in practice, no implementation that uses this choice
+ * correctly undoes the encoding before handling alpha composition. Use this
+ * choice only if other serious errors in the software or hardware you use
+ * mandate it; the typical serious error is for dark halos to appear around
+ * opaque areas of the composited PNG image because of arithmetic overflow.
+ *
+ * The API function png_set_alpha_mode specifies which of these choices to use
+ * with an enumerated 'mode' value and the gamma of the required output:
+ */
+#define PNG_ALPHA_PNG 0 /* according to the PNG standard */
+#define PNG_ALPHA_STANDARD 1 /* according to Porter/Duff */
+#define PNG_ALPHA_ASSOCIATED 1 /* as above; this is the normal practice */
+#define PNG_ALPHA_PREMULTIPLIED 1 /* as above */
+#define PNG_ALPHA_OPTIMIZED 2 /* 'PNG' for opaque pixels, else 'STANDARD' */
+#define PNG_ALPHA_BROKEN 3 /* the alpha channel is gamma encoded */
+
+PNG_FP_EXPORT(227, void, png_set_alpha_mode, (png_structrp png_ptr, int mode,
+ double output_gamma))
+PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structrp png_ptr,
+ int mode, png_fixed_point output_gamma))
+#endif
+
+#if defined(PNG_GAMMA_SUPPORTED) || defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+/* The output_gamma value is a screen gamma in libpng terminology: it expresses
+ * how to decode the output values, not how they are encoded. The values used
+ * correspond to the normal numbers used to describe the overall gamma of a
+ * computer display system; for example 2.2 for an sRGB conformant system. The
+ * values are scaled by 100000 in the _fixed version of the API (so 220000 for
+ * sRGB.)
+ *
+ * The inverse of the value is always used to provide a default for the PNG file
+ * encoding if it has no gAMA chunk and if png_set_gamma() has not been called
+ * to override the PNG gamma information.
+ *
+ * When the ALPHA_OPTIMIZED mode is selected the output gamma is used to encode
+ * opaque pixels however pixels with lower alpha values are not encoded,
+ * regardless of the output gamma setting.
+ *
+ * When the standard Porter Duff handling is requested with mode 1 the output
+ * encoding is set to be linear and the output_gamma value is only relevant
+ * as a default for input data that has no gamma information. The linear output
+ * encoding will be overridden if png_set_gamma() is called - the results may be
+ * highly unexpected!
+ *
+ * The following numbers are derived from the sRGB standard and the research
+ * behind it. sRGB is defined to be approximated by a PNG gAMA chunk value of
+ * 0.45455 (1/2.2) for PNG. The value implicitly includes any viewing
+ * correction required to take account of any differences in the color
+ * environment of the original scene and the intended display environment; the
+ * value expresses how to *decode* the image for display, not how the original
+ * data was *encoded*.
+ *
+ * sRGB provides a peg for the PNG standard by defining a viewing environment.
+ * sRGB itself, and earlier TV standards, actually use a more complex transform
+ * (a linear portion then a gamma 2.4 power law) than PNG can express. (PNG is
+ * limited to simple power laws.) By saying that an image for direct display on
+ * an sRGB conformant system should be stored with a gAMA chunk value of 45455
+ * (11.3.3.2 and 11.3.3.5 of the ISO PNG specification) the PNG specification
+ * makes it possible to derive values for other display systems and
+ * environments.
+ *
+ * The Mac value is deduced from the sRGB based on an assumption that the actual
+ * extra viewing correction used in early Mac display systems was implemented as
+ * a power 1.45 lookup table.
+ *
+ * Any system where a programmable lookup table is used or where the behavior of
+ * the final display device characteristics can be changed requires system
+ * specific code to obtain the current characteristic. However this can be
+ * difficult and most PNG gamma correction only requires an approximate value.
+ *
+ * By default, if png_set_alpha_mode() is not called, libpng assumes that all
+ * values are unencoded, linear, values and that the output device also has a
+ * linear characteristic. This is only very rarely correct - it is invariably
+ * better to call png_set_alpha_mode() with PNG_DEFAULT_sRGB than rely on the
+ * default if you don't know what the right answer is!
+ *
+ * The special value PNG_GAMMA_MAC_18 indicates an older Mac system (pre Mac OS
+ * 10.6) which used a correction table to implement a somewhat lower gamma on an
+ * otherwise sRGB system.
+ *
+ * Both these values are reserved (not simple gamma values) in order to allow
+ * more precise correction internally in the future.
+ *
+ * NOTE: the following values can be passed to either the fixed or floating
+ * point APIs, but the floating point API will also accept floating point
+ * values.
+ */
+#define PNG_DEFAULT_sRGB -1 /* sRGB gamma and color space */
+#define PNG_GAMMA_MAC_18 -2 /* Old Mac '1.8' gamma and color space */
+#define PNG_GAMMA_sRGB 220000 /* Television standards--matches sRGB gamma */
+#define PNG_GAMMA_LINEAR PNG_FP_1 /* Linear */
+#endif
+
+/* The following are examples of calls to png_set_alpha_mode to achieve the
+ * required overall gamma correction and, where necessary, alpha
+ * premultiplication.
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
+ * This is the default libpng handling of the alpha channel - it is not
+ * pre-multiplied into the color components. In addition the call states
+ * that the output is for a sRGB system and causes all PNG files without gAMA
+ * chunks to be assumed to be encoded using sRGB.
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC);
+ * In this case the output is assumed to be something like an sRGB conformant
+ * display preceeded by a power-law lookup table of power 1.45. This is how
+ * early Mac systems behaved.
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_GAMMA_LINEAR);
+ * This is the classic Jim Blinn approach and will work in academic
+ * environments where everything is done by the book. It has the shortcoming
+ * of assuming that input PNG data with no gamma information is linear - this
+ * is unlikely to be correct unless the PNG files where generated locally.
+ * Most of the time the output precision will be so low as to show
+ * significant banding in dark areas of the image.
+ *
+ * png_set_expand_16(pp);
+ * png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_DEFAULT_sRGB);
+ * This is a somewhat more realistic Jim Blinn inspired approach. PNG files
+ * are assumed to have the sRGB encoding if not marked with a gamma value and
+ * the output is always 16 bits per component. This permits accurate scaling
+ * and processing of the data. If you know that your input PNG files were
+ * generated locally you might need to replace PNG_DEFAULT_sRGB with the
+ * correct value for your system.
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_OPTIMIZED, PNG_DEFAULT_sRGB);
+ * If you just need to composite the PNG image onto an existing background
+ * and if you control the code that does this you can use the optimization
+ * setting. In this case you just copy completely opaque pixels to the
+ * output. For pixels that are not completely transparent (you just skip
+ * those) you do the composition math using png_composite or png_composite_16
+ * below then encode the resultant 8-bit or 16-bit values to match the output
+ * encoding.
+ *
+ * Other cases
+ * If neither the PNG nor the standard linear encoding work for you because
+ * of the software or hardware you use then you have a big problem. The PNG
+ * case will probably result in halos around the image. The linear encoding
+ * will probably result in a washed out, too bright, image (it's actually too
+ * contrasty.) Try the ALPHA_OPTIMIZED mode above - this will probably
+ * substantially reduce the halos. Alternatively try:
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_BROKEN, PNG_DEFAULT_sRGB);
+ * This option will also reduce the halos, but there will be slight dark
+ * halos round the opaque parts of the image where the background is light.
+ * In the OPTIMIZED mode the halos will be light halos where the background
+ * is dark. Take your pick - the halos are unavoidable unless you can get
+ * your hardware/software fixed! (The OPTIMIZED approach is slightly
+ * faster.)
+ *
+ * When the default gamma of PNG files doesn't match the output gamma.
+ * If you have PNG files with no gamma information png_set_alpha_mode allows
+ * you to provide a default gamma, but it also sets the ouput gamma to the
+ * matching value. If you know your PNG files have a gamma that doesn't
+ * match the output you can take advantage of the fact that
+ * png_set_alpha_mode always sets the output gamma but only sets the PNG
+ * default if it is not already set:
+ *
+ * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
+ * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC);
+ * The first call sets both the default and the output gamma values, the
+ * second call overrides the output gamma without changing the default. This
+ * is easier than achieving the same effect with png_set_gamma. You must use
+ * PNG_ALPHA_PNG for the first call - internal checking in png_set_alpha will
+ * fire if more than one call to png_set_alpha_mode and png_set_background is
+ * made in the same read operation, however multiple calls with PNG_ALPHA_PNG
+ * are ignored.
+ */
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+PNG_EXPORT(36, void, png_set_strip_alpha, (png_structrp png_ptr));
+#endif
+
+#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
+ defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
+PNG_EXPORT(37, void, png_set_swap_alpha, (png_structrp png_ptr));
+#endif
+
+#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
+ defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+PNG_EXPORT(38, void, png_set_invert_alpha, (png_structrp png_ptr));
+#endif
+
+#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */
+PNG_EXPORT(39, void, png_set_filler, (png_structrp png_ptr, png_uint_32 filler,
+ int flags));
+/* The values of the PNG_FILLER_ defines should NOT be changed */
+# define PNG_FILLER_BEFORE 0
+# define PNG_FILLER_AFTER 1
+/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */
+PNG_EXPORT(40, void, png_set_add_alpha, (png_structrp png_ptr,
+ png_uint_32 filler, int flags));
+#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */
+
+#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
+/* Swap bytes in 16-bit depth files. */
+PNG_EXPORT(41, void, png_set_swap, (png_structrp png_ptr));
+#endif
+
+#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
+/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */
+PNG_EXPORT(42, void, png_set_packing, (png_structrp png_ptr));
+#endif
+
+#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
+ defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+/* Swap packing order of pixels in bytes. */
+PNG_EXPORT(43, void, png_set_packswap, (png_structrp png_ptr));
+#endif
+
+#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
+/* Converts files to legal bit depths. */
+PNG_EXPORT(44, void, png_set_shift, (png_structrp png_ptr, png_const_color_8p
+ true_bits));
+#endif
+
+#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
+ defined(PNG_WRITE_INTERLACING_SUPPORTED)
+/* Have the code handle the interlacing. Returns the number of passes.
+ * MUST be called before png_read_update_info or png_start_read_image,
+ * otherwise it will not have the desired effect. Note that it is still
+ * necessary to call png_read_row or png_read_rows png_get_image_height
+ * times for each pass.
+*/
+PNG_EXPORT(45, int, png_set_interlace_handling, (png_structrp png_ptr));
+#endif
+
+#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
+/* Invert monochrome files */
+PNG_EXPORT(46, void, png_set_invert_mono, (png_structrp png_ptr));
+#endif
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+/* Handle alpha and tRNS by replacing with a background color. Prior to
+ * libpng-1.5.4 this API must not be called before the PNG file header has been
+ * read. Doing so will result in unexpected behavior and possible warnings or
+ * errors if the PNG file contains a bKGD chunk.
+ */
+PNG_FP_EXPORT(47, void, png_set_background, (png_structrp png_ptr,
+ png_const_color_16p background_color, int background_gamma_code,
+ int need_expand, double background_gamma))
+PNG_FIXED_EXPORT(215, void, png_set_background_fixed, (png_structrp png_ptr,
+ png_const_color_16p background_color, int background_gamma_code,
+ int need_expand, png_fixed_point background_gamma))
+#endif
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+# define PNG_BACKGROUND_GAMMA_UNKNOWN 0
+# define PNG_BACKGROUND_GAMMA_SCREEN 1
+# define PNG_BACKGROUND_GAMMA_FILE 2
+# define PNG_BACKGROUND_GAMMA_UNIQUE 3
+#endif
+
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+/* Scale a 16-bit depth file down to 8-bit, accurately. */
+PNG_EXPORT(229, void, png_set_scale_16, (png_structrp png_ptr));
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+#define PNG_READ_16_TO_8 SUPPORTED /* Name prior to 1.5.4 */
+/* Strip the second byte of information from a 16-bit depth file. */
+PNG_EXPORT(48, void, png_set_strip_16, (png_structrp png_ptr));
+#endif
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+/* Turn on quantizing, and reduce the palette to the number of colors
+ * available.
+ */
+PNG_EXPORT(49, void, png_set_quantize, (png_structrp png_ptr,
+ png_colorp palette, int num_palette, int maximum_colors,
+ png_const_uint_16p histogram, int full_quantize));
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* The threshold on gamma processing is configurable but hard-wired into the
+ * library. The following is the floating point variant.
+ */
+#define PNG_GAMMA_THRESHOLD (PNG_GAMMA_THRESHOLD_FIXED*.00001)
+
+/* Handle gamma correction. Screen_gamma=(display_exponent).
+ * NOTE: this API simply sets the screen and file gamma values. It will
+ * therefore override the value for gamma in a PNG file if it is called after
+ * the file header has been read - use with care - call before reading the PNG
+ * file for best results!
+ *
+ * These routines accept the same gamma values as png_set_alpha_mode (described
+ * above). The PNG_GAMMA_ defines and PNG_DEFAULT_sRGB can be passed to either
+ * API (floating point or fixed.) Notice, however, that the 'file_gamma' value
+ * is the inverse of a 'screen gamma' value.
+ */
+PNG_FP_EXPORT(50, void, png_set_gamma, (png_structrp png_ptr,
+ double screen_gamma, double override_file_gamma))
+PNG_FIXED_EXPORT(208, void, png_set_gamma_fixed, (png_structrp png_ptr,
+ png_fixed_point screen_gamma, png_fixed_point override_file_gamma))
+#endif
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+/* Set how many lines between output flushes - 0 for no flushing */
+PNG_EXPORT(51, void, png_set_flush, (png_structrp png_ptr, int nrows));
+/* Flush the current PNG output buffer */
+PNG_EXPORT(52, void, png_write_flush, (png_structrp png_ptr));
+#endif
+
+/* Optional update palette with requested transformations */
+PNG_EXPORT(53, void, png_start_read_image, (png_structrp png_ptr));
+
+/* Optional call to update the users info structure */
+PNG_EXPORT(54, void, png_read_update_info, (png_structrp png_ptr,
+ png_inforp info_ptr));
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read one or more rows of image data. */
+PNG_EXPORT(55, void, png_read_rows, (png_structrp png_ptr, png_bytepp row,
+ png_bytepp display_row, png_uint_32 num_rows));
+#endif
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read a row of data. */
+PNG_EXPORT(56, void, png_read_row, (png_structrp png_ptr, png_bytep row,
+ png_bytep display_row));
+#endif
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the whole image into memory at once. */
+PNG_EXPORT(57, void, png_read_image, (png_structrp png_ptr, png_bytepp image));
+#endif
+
+/* Write a row of image data */
+PNG_EXPORT(58, void, png_write_row, (png_structrp png_ptr,
+ png_const_bytep row));
+
+/* Write a few rows of image data: (*row) is not written; however, the type
+ * is declared as writeable to maintain compatibility with previous versions
+ * of libpng and to allow the 'display_row' array from read_rows to be passed
+ * unchanged to write_rows.
+ */
+PNG_EXPORT(59, void, png_write_rows, (png_structrp png_ptr, png_bytepp row,
+ png_uint_32 num_rows));
+
+/* Write the image data */
+PNG_EXPORT(60, void, png_write_image, (png_structrp png_ptr, png_bytepp image));
+
+/* Write the end of the PNG file. */
+PNG_EXPORT(61, void, png_write_end, (png_structrp png_ptr,
+ png_inforp info_ptr));
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the end of the PNG file. */
+PNG_EXPORT(62, void, png_read_end, (png_structrp png_ptr, png_inforp info_ptr));
+#endif
+
+/* Free any memory associated with the png_info_struct */
+PNG_EXPORT(63, void, png_destroy_info_struct, (png_const_structrp png_ptr,
+ png_infopp info_ptr_ptr));
+
+/* Free any memory associated with the png_struct and the png_info_structs */
+PNG_EXPORT(64, void, png_destroy_read_struct, (png_structpp png_ptr_ptr,
+ png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr));
+
+/* Free any memory associated with the png_struct and the png_info_structs */
+PNG_EXPORT(65, void, png_destroy_write_struct, (png_structpp png_ptr_ptr,
+ png_infopp info_ptr_ptr));
+
+/* Set the libpng method of handling chunk CRC errors */
+PNG_EXPORT(66, void, png_set_crc_action, (png_structrp png_ptr, int crit_action,
+ int ancil_action));
+
+/* Values for png_set_crc_action() say how to handle CRC errors in
+ * ancillary and critical chunks, and whether to use the data contained
+ * therein. Note that it is impossible to "discard" data in a critical
+ * chunk. For versions prior to 0.90, the action was always error/quit,
+ * whereas in version 0.90 and later, the action for CRC errors in ancillary
+ * chunks is warn/discard. These values should NOT be changed.
+ *
+ * value action:critical action:ancillary
+ */
+#define PNG_CRC_DEFAULT 0 /* error/quit warn/discard data */
+#define PNG_CRC_ERROR_QUIT 1 /* error/quit error/quit */
+#define PNG_CRC_WARN_DISCARD 2 /* (INVALID) warn/discard data */
+#define PNG_CRC_WARN_USE 3 /* warn/use data warn/use data */
+#define PNG_CRC_QUIET_USE 4 /* quiet/use data quiet/use data */
+#define PNG_CRC_NO_CHANGE 5 /* use current value use current value */
+
+/* These functions give the user control over the scan-line filtering in
+ * libpng and the compression methods used by zlib. These functions are
+ * mainly useful for testing, as the defaults should work with most users.
+ * Those users who are tight on memory or want faster performance at the
+ * expense of compression can modify them. See the compression library
+ * header file (zlib.h) for an explination of the compression functions.
+ */
+
+/* Set the filtering method(s) used by libpng. Currently, the only valid
+ * value for "method" is 0.
+ */
+PNG_EXPORT(67, void, png_set_filter, (png_structrp png_ptr, int method,
+ int filters));
+
+/* Flags for png_set_filter() to say which filters to use. The flags
+ * are chosen so that they don't conflict with real filter types
+ * below, in case they are supplied instead of the #defined constants.
+ * These values should NOT be changed.
+ */
+#define PNG_NO_FILTERS 0x00
+#define PNG_FILTER_NONE 0x08
+#define PNG_FILTER_SUB 0x10
+#define PNG_FILTER_UP 0x20
+#define PNG_FILTER_AVG 0x40
+#define PNG_FILTER_PAETH 0x80
+#define PNG_ALL_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP | \
+ PNG_FILTER_AVG | PNG_FILTER_PAETH)
+
+/* Filter values (not flags) - used in pngwrite.c, pngwutil.c for now.
+ * These defines should NOT be changed.
+ */
+#define PNG_FILTER_VALUE_NONE 0
+#define PNG_FILTER_VALUE_SUB 1
+#define PNG_FILTER_VALUE_UP 2
+#define PNG_FILTER_VALUE_AVG 3
+#define PNG_FILTER_VALUE_PAETH 4
+#define PNG_FILTER_VALUE_LAST 5
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* EXPERIMENTAL */
+/* The "heuristic_method" is given by one of the PNG_FILTER_HEURISTIC_
+ * defines, either the default (minimum-sum-of-absolute-differences), or
+ * the experimental method (weighted-minimum-sum-of-absolute-differences).
+ *
+ * Weights are factors >= 1.0, indicating how important it is to keep the
+ * filter type consistent between rows. Larger numbers mean the current
+ * filter is that many times as likely to be the same as the "num_weights"
+ * previous filters. This is cumulative for each previous row with a weight.
+ * There needs to be "num_weights" values in "filter_weights", or it can be
+ * NULL if the weights aren't being specified. Weights have no influence on
+ * the selection of the first row filter. Well chosen weights can (in theory)
+ * improve the compression for a given image.
+ *
+ * Costs are factors >= 1.0 indicating the relative decoding costs of a
+ * filter type. Higher costs indicate more decoding expense, and are
+ * therefore less likely to be selected over a filter with lower computational
+ * costs. There needs to be a value in "filter_costs" for each valid filter
+ * type (given by PNG_FILTER_VALUE_LAST), or it can be NULL if you aren't
+ * setting the costs. Costs try to improve the speed of decompression without
+ * unduly increasing the compressed image size.
+ *
+ * A negative weight or cost indicates the default value is to be used, and
+ * values in the range [0.0, 1.0) indicate the value is to remain unchanged.
+ * The default values for both weights and costs are currently 1.0, but may
+ * change if good general weighting/cost heuristics can be found. If both
+ * the weights and costs are set to 1.0, this degenerates the WEIGHTED method
+ * to the UNWEIGHTED method, but with added encoding time/computation.
+ */
+PNG_FP_EXPORT(68, void, png_set_filter_heuristics, (png_structrp png_ptr,
+ int heuristic_method, int num_weights, png_const_doublep filter_weights,
+ png_const_doublep filter_costs))
+PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
+ (png_structrp png_ptr, int heuristic_method, int num_weights,
+ png_const_fixed_point_p filter_weights,
+ png_const_fixed_point_p filter_costs))
+#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
+
+/* Heuristic used for row filter selection. These defines should NOT be
+ * changed.
+ */
+#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */
+#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */
+#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */
+#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */
+
+#ifdef PNG_WRITE_SUPPORTED
+/* Set the library compression level. Currently, valid values range from
+ * 0 - 9, corresponding directly to the zlib compression levels 0 - 9
+ * (0 - no compression, 9 - "maximal" compression). Note that tests have
+ * shown that zlib compression levels 3-6 usually perform as well as level 9
+ * for PNG images, and do considerably fewer caclulations. In the future,
+ * these values may not correspond directly to the zlib compression levels.
+ */
+PNG_EXPORT(69, void, png_set_compression_level, (png_structrp png_ptr,
+ int level));
+
+PNG_EXPORT(70, void, png_set_compression_mem_level, (png_structrp png_ptr,
+ int mem_level));
+
+PNG_EXPORT(71, void, png_set_compression_strategy, (png_structrp png_ptr,
+ int strategy));
+
+/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
+ * smaller value of window_bits if it can do so safely.
+ */
+PNG_EXPORT(72, void, png_set_compression_window_bits, (png_structrp png_ptr,
+ int window_bits));
+
+PNG_EXPORT(73, void, png_set_compression_method, (png_structrp png_ptr,
+ int method));
+#endif
+
+#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+/* Also set zlib parameters for compressing non-IDAT chunks */
+PNG_EXPORT(222, void, png_set_text_compression_level, (png_structrp png_ptr,
+ int level));
+
+PNG_EXPORT(223, void, png_set_text_compression_mem_level, (png_structrp png_ptr,
+ int mem_level));
+
+PNG_EXPORT(224, void, png_set_text_compression_strategy, (png_structrp png_ptr,
+ int strategy));
+
+/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
+ * smaller value of window_bits if it can do so safely.
+ */
+PNG_EXPORT(225, void, png_set_text_compression_window_bits,
+ (png_structrp png_ptr, int window_bits));
+
+PNG_EXPORT(226, void, png_set_text_compression_method, (png_structrp png_ptr,
+ int method));
+#endif /* PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED */
+
+/* These next functions are called for input/output, memory, and error
+ * handling. They are in the file pngrio.c, pngwio.c, and pngerror.c,
+ * and call standard C I/O routines such as fread(), fwrite(), and
+ * fprintf(). These functions can be made to use other I/O routines
+ * at run time for those applications that need to handle I/O in a
+ * different manner by calling png_set_???_fn(). See libpng-manual.txt for
+ * more information.
+ */
+
+#ifdef PNG_STDIO_SUPPORTED
+/* Initialize the input/output for the PNG file to the default functions. */
+PNG_EXPORT(74, void, png_init_io, (png_structrp png_ptr, png_FILE_p fp));
+#endif
+
+/* Replace the (error and abort), and warning functions with user
+ * supplied functions. If no messages are to be printed you must still
+ * write and use replacement functions. The replacement error_fn should
+ * still do a longjmp to the last setjmp location if you are using this
+ * method of error handling. If error_fn or warning_fn is NULL, the
+ * default function will be used.
+ */
+
+PNG_EXPORT(75, void, png_set_error_fn, (png_structrp png_ptr,
+ png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn));
+
+/* Return the user pointer associated with the error functions */
+PNG_EXPORT(76, png_voidp, png_get_error_ptr, (png_const_structrp png_ptr));
+
+/* Replace the default data output functions with a user supplied one(s).
+ * If buffered output is not used, then output_flush_fn can be set to NULL.
+ * If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time
+ * output_flush_fn will be ignored (and thus can be NULL).
+ * It is probably a mistake to use NULL for output_flush_fn if
+ * write_data_fn is not also NULL unless you have built libpng with
+ * PNG_WRITE_FLUSH_SUPPORTED undefined, because in this case libpng's
+ * default flush function, which uses the standard *FILE structure, will
+ * be used.
+ */
+PNG_EXPORT(77, void, png_set_write_fn, (png_structrp png_ptr, png_voidp io_ptr,
+ png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn));
+
+/* Replace the default data input function with a user supplied one. */
+PNG_EXPORT(78, void, png_set_read_fn, (png_structrp png_ptr, png_voidp io_ptr,
+ png_rw_ptr read_data_fn));
+
+/* Return the user pointer associated with the I/O functions */
+PNG_EXPORT(79, png_voidp, png_get_io_ptr, (png_const_structrp png_ptr));
+
+PNG_EXPORT(80, void, png_set_read_status_fn, (png_structrp png_ptr,
+ png_read_status_ptr read_row_fn));
+
+PNG_EXPORT(81, void, png_set_write_status_fn, (png_structrp png_ptr,
+ png_write_status_ptr write_row_fn));
+
+#ifdef PNG_USER_MEM_SUPPORTED
+/* Replace the default memory allocation functions with user supplied one(s). */
+PNG_EXPORT(82, void, png_set_mem_fn, (png_structrp png_ptr, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn));
+/* Return the user pointer associated with the memory functions */
+PNG_EXPORT(83, png_voidp, png_get_mem_ptr, (png_const_structrp png_ptr));
+#endif
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+PNG_EXPORT(84, void, png_set_read_user_transform_fn, (png_structrp png_ptr,
+ png_user_transform_ptr read_user_transform_fn));
+#endif
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+PNG_EXPORT(85, void, png_set_write_user_transform_fn, (png_structrp png_ptr,
+ png_user_transform_ptr write_user_transform_fn));
+#endif
+
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+PNG_EXPORT(86, void, png_set_user_transform_info, (png_structrp png_ptr,
+ png_voidp user_transform_ptr, int user_transform_depth,
+ int user_transform_channels));
+/* Return the user pointer associated with the user transform functions */
+PNG_EXPORT(87, png_voidp, png_get_user_transform_ptr,
+ (png_const_structrp png_ptr));
+#endif
+
+#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED
+/* Return information about the row currently being processed. Note that these
+ * APIs do not fail but will return unexpected results if called outside a user
+ * transform callback. Also note that when transforming an interlaced image the
+ * row number is the row number within the sub-image of the interlace pass, so
+ * the value will increase to the height of the sub-image (not the full image)
+ * then reset to 0 for the next pass.
+ *
+ * Use PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
+ * find the output pixel (x,y) given an interlaced sub-image pixel
+ * (row,col,pass). (See below for these macros.)
+ */
+PNG_EXPORT(217, png_uint_32, png_get_current_row_number, (png_const_structrp));
+PNG_EXPORT(218, png_byte, png_get_current_pass_number, (png_const_structrp));
+#endif
+
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+/* This callback is called only for *unknown* chunks. If
+ * PNG_HANDLE_AS_UNKNOWN_SUPPORTED is set then it is possible to set known
+ * chunks to be treated as unknown, however in this case the callback must do
+ * any processing required by the chunk (e.g. by calling the appropriate
+ * png_set_ APIs.)
+ *
+ * There is no write support - on write, by default, all the chunks in the
+ * 'unknown' list are written in the specified position.
+ *
+ * The integer return from the callback function is interpreted thus:
+ *
+ * negative: An error occured, png_chunk_error will be called.
+ * zero: The chunk was not handled, the chunk will be saved. A critical
+ * chunk will cause an error at this point unless it is to be saved.
+ * positive: The chunk was handled, libpng will ignore/discard it.
+ *
+ * See "INTERACTION WTIH USER CHUNK CALLBACKS" below for important notes about
+ * how this behavior will change in libpng 1.7
+ */
+PNG_EXPORT(88, void, png_set_read_user_chunk_fn, (png_structrp png_ptr,
+ png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn));
+#endif
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+PNG_EXPORT(89, png_voidp, png_get_user_chunk_ptr, (png_const_structrp png_ptr));
+#endif
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+/* Sets the function callbacks for the push reader, and a pointer to a
+ * user-defined structure available to the callback functions.
+ */
+PNG_EXPORT(90, void, png_set_progressive_read_fn, (png_structrp png_ptr,
+ png_voidp progressive_ptr, png_progressive_info_ptr info_fn,
+ png_progressive_row_ptr row_fn, png_progressive_end_ptr end_fn));
+
+/* Returns the user pointer associated with the push read functions */
+PNG_EXPORT(91, png_voidp, png_get_progressive_ptr,
+ (png_const_structrp png_ptr));
+
+/* Function to be called when data becomes available */
+PNG_EXPORT(92, void, png_process_data, (png_structrp png_ptr,
+ png_inforp info_ptr, png_bytep buffer, png_size_t buffer_size));
+
+/* A function which may be called *only* within png_process_data to stop the
+ * processing of any more data. The function returns the number of bytes
+ * remaining, excluding any that libpng has cached internally. A subsequent
+ * call to png_process_data must supply these bytes again. If the argument
+ * 'save' is set to true the routine will first save all the pending data and
+ * will always return 0.
+ */
+PNG_EXPORT(219, png_size_t, png_process_data_pause, (png_structrp, int save));
+
+/* A function which may be called *only* outside (after) a call to
+ * png_process_data. It returns the number of bytes of data to skip in the
+ * input. Normally it will return 0, but if it returns a non-zero value the
+ * application must skip than number of bytes of input data and pass the
+ * following data to the next call to png_process_data.
+ */
+PNG_EXPORT(220, png_uint_32, png_process_data_skip, (png_structrp));
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+/* Function that combines rows. 'new_row' is a flag that should come from
+ * the callback and be non-NULL if anything needs to be done; the library
+ * stores its own version of the new data internally and ignores the passed
+ * in value.
+ */
+PNG_EXPORT(93, void, png_progressive_combine_row, (png_const_structrp png_ptr,
+ png_bytep old_row, png_const_bytep new_row));
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+PNG_EXPORTA(94, png_voidp, png_malloc, (png_const_structrp png_ptr,
+ png_alloc_size_t size), PNG_ALLOCATED);
+/* Added at libpng version 1.4.0 */
+PNG_EXPORTA(95, png_voidp, png_calloc, (png_const_structrp png_ptr,
+ png_alloc_size_t size), PNG_ALLOCATED);
+
+/* Added at libpng version 1.2.4 */
+PNG_EXPORTA(96, png_voidp, png_malloc_warn, (png_const_structrp png_ptr,
+ png_alloc_size_t size), PNG_ALLOCATED);
+
+/* Frees a pointer allocated by png_malloc() */
+PNG_EXPORT(97, void, png_free, (png_const_structrp png_ptr, png_voidp ptr));
+
+/* Free data that was allocated internally */
+PNG_EXPORT(98, void, png_free_data, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 free_me, int num));
+
+/* Reassign responsibility for freeing existing data, whether allocated
+ * by libpng or by the application; this works on the png_info structure passed
+ * in, it does not change the state for other png_info structures.
+ *
+ * It is unlikely that this function works correctly as of 1.6.0 and using it
+ * may result either in memory leaks or double free of allocated data.
+ */
+PNG_EXPORTA(99, void, png_data_freer, (png_const_structrp png_ptr,
+ png_inforp info_ptr, int freer, png_uint_32 mask), PNG_DEPRECATED);
+
+/* Assignments for png_data_freer */
+#define PNG_DESTROY_WILL_FREE_DATA 1
+#define PNG_SET_WILL_FREE_DATA 1
+#define PNG_USER_WILL_FREE_DATA 2
+/* Flags for png_ptr->free_me and info_ptr->free_me */
+#define PNG_FREE_HIST 0x0008
+#define PNG_FREE_ICCP 0x0010
+#define PNG_FREE_SPLT 0x0020
+#define PNG_FREE_ROWS 0x0040
+#define PNG_FREE_PCAL 0x0080
+#define PNG_FREE_SCAL 0x0100
+#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+# define PNG_FREE_UNKN 0x0200
+#endif
+/* PNG_FREE_LIST 0x0400 removed in 1.6.0 because it is ignored */
+#define PNG_FREE_PLTE 0x1000
+#define PNG_FREE_TRNS 0x2000
+#define PNG_FREE_TEXT 0x4000
+#define PNG_FREE_ALL 0x7fff
+#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
+
+#ifdef PNG_USER_MEM_SUPPORTED
+PNG_EXPORTA(100, png_voidp, png_malloc_default, (png_const_structrp png_ptr,
+ png_alloc_size_t size), PNG_ALLOCATED PNG_DEPRECATED);
+PNG_EXPORTA(101, void, png_free_default, (png_const_structrp png_ptr,
+ png_voidp ptr), PNG_DEPRECATED);
+#endif
+
+#ifdef PNG_ERROR_TEXT_SUPPORTED
+/* Fatal error in PNG image of libpng - can't continue */
+PNG_EXPORTA(102, void, png_error, (png_const_structrp png_ptr,
+ png_const_charp error_message), PNG_NORETURN);
+
+/* The same, but the chunk name is prepended to the error string. */
+PNG_EXPORTA(103, void, png_chunk_error, (png_const_structrp png_ptr,
+ png_const_charp error_message), PNG_NORETURN);
+
+#else
+/* Fatal error in PNG image of libpng - can't continue */
+PNG_EXPORTA(104, void, png_err, (png_const_structrp png_ptr), PNG_NORETURN);
+#endif
+
+#ifdef PNG_WARNINGS_SUPPORTED
+/* Non-fatal error in libpng. Can continue, but may have a problem. */
+PNG_EXPORT(105, void, png_warning, (png_const_structrp png_ptr,
+ png_const_charp warning_message));
+
+/* Non-fatal error in libpng, chunk name is prepended to message. */
+PNG_EXPORT(106, void, png_chunk_warning, (png_const_structrp png_ptr,
+ png_const_charp warning_message));
+#endif
+
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+/* Benign error in libpng. Can continue, but may have a problem.
+ * User can choose whether to handle as a fatal error or as a warning. */
+PNG_EXPORT(107, void, png_benign_error, (png_const_structrp png_ptr,
+ png_const_charp warning_message));
+
+#ifdef PNG_READ_SUPPORTED
+/* Same, chunk name is prepended to message (only during read) */
+PNG_EXPORT(108, void, png_chunk_benign_error, (png_const_structrp png_ptr,
+ png_const_charp warning_message));
+#endif
+
+PNG_EXPORT(109, void, png_set_benign_errors,
+ (png_structrp png_ptr, int allowed));
+#else
+# ifdef PNG_ALLOW_BENIGN_ERRORS
+# define png_benign_error png_warning
+# define png_chunk_benign_error png_chunk_warning
+# else
+# define png_benign_error png_error
+# define png_chunk_benign_error png_chunk_error
+# endif
+#endif
+
+/* The png_set_<chunk> functions are for storing values in the png_info_struct.
+ * Similarly, the png_get_<chunk> calls are used to read values from the
+ * png_info_struct, either storing the parameters in the passed variables, or
+ * setting pointers into the png_info_struct where the data is stored. The
+ * png_get_<chunk> functions return a non-zero value if the data was available
+ * in info_ptr, or return zero and do not change any of the parameters if the
+ * data was not available.
+ *
+ * These functions should be used instead of directly accessing png_info
+ * to avoid problems with future changes in the size and internal layout of
+ * png_info_struct.
+ */
+/* Returns "flag" if chunk data is valid in info_ptr. */
+PNG_EXPORT(110, png_uint_32, png_get_valid, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, png_uint_32 flag));
+
+/* Returns number of bytes needed to hold a transformed row. */
+PNG_EXPORT(111, png_size_t, png_get_rowbytes, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+/* Returns row_pointers, which is an array of pointers to scanlines that was
+ * returned from png_read_png().
+ */
+PNG_EXPORT(112, png_bytepp, png_get_rows, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+/* Set row_pointers, which is an array of pointers to scanlines for use
+ * by png_write_png().
+ */
+PNG_EXPORT(113, void, png_set_rows, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_bytepp row_pointers));
+#endif
+
+/* Returns number of color channels in image. */
+PNG_EXPORT(114, png_byte, png_get_channels, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+#ifdef PNG_EASY_ACCESS_SUPPORTED
+/* Returns image width in pixels. */
+PNG_EXPORT(115, png_uint_32, png_get_image_width, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+/* Returns image height in pixels. */
+PNG_EXPORT(116, png_uint_32, png_get_image_height, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+/* Returns image bit_depth. */
+PNG_EXPORT(117, png_byte, png_get_bit_depth, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+/* Returns image color_type. */
+PNG_EXPORT(118, png_byte, png_get_color_type, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+/* Returns image filter_type. */
+PNG_EXPORT(119, png_byte, png_get_filter_type, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+/* Returns image interlace_type. */
+PNG_EXPORT(120, png_byte, png_get_interlace_type, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+/* Returns image compression_type. */
+PNG_EXPORT(121, png_byte, png_get_compression_type, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+
+/* Returns image resolution in pixels per meter, from pHYs chunk data. */
+PNG_EXPORT(122, png_uint_32, png_get_pixels_per_meter,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+PNG_EXPORT(123, png_uint_32, png_get_x_pixels_per_meter,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+PNG_EXPORT(124, png_uint_32, png_get_y_pixels_per_meter,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+
+/* Returns pixel aspect ratio, computed from pHYs chunk data. */
+PNG_FP_EXPORT(125, float, png_get_pixel_aspect_ratio,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr))
+PNG_FIXED_EXPORT(210, png_fixed_point, png_get_pixel_aspect_ratio_fixed,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr))
+
+/* Returns image x, y offset in pixels or microns, from oFFs chunk data. */
+PNG_EXPORT(126, png_int_32, png_get_x_offset_pixels,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+PNG_EXPORT(127, png_int_32, png_get_y_offset_pixels,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+PNG_EXPORT(128, png_int_32, png_get_x_offset_microns,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+PNG_EXPORT(129, png_int_32, png_get_y_offset_microns,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+
+#endif /* PNG_EASY_ACCESS_SUPPORTED */
+
+#ifdef PNG_READ_SUPPORTED
+/* Returns pointer to signature string read from PNG header */
+PNG_EXPORT(130, png_const_bytep, png_get_signature, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr));
+#endif
+
+#ifdef PNG_bKGD_SUPPORTED
+PNG_EXPORT(131, png_uint_32, png_get_bKGD, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_color_16p *background));
+#endif
+
+#ifdef PNG_bKGD_SUPPORTED
+PNG_EXPORT(132, void, png_set_bKGD, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_color_16p background));
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+PNG_FP_EXPORT(133, png_uint_32, png_get_cHRM, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, double *white_x, double *white_y, double *red_x,
+ double *red_y, double *green_x, double *green_y, double *blue_x,
+ double *blue_y))
+PNG_FP_EXPORT(230, png_uint_32, png_get_cHRM_XYZ, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, double *red_X, double *red_Y, double *red_Z,
+ double *green_X, double *green_Y, double *green_Z, double *blue_X,
+ double *blue_Y, double *blue_Z))
+PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_fixed_point *int_white_x, png_fixed_point *int_white_y,
+ png_fixed_point *int_red_x, png_fixed_point *int_red_y,
+ png_fixed_point *int_green_x, png_fixed_point *int_green_y,
+ png_fixed_point *int_blue_x, png_fixed_point *int_blue_y))
+PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
+ png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
+ png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
+ png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
+ png_fixed_point *int_blue_Z))
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+PNG_FP_EXPORT(135, void, png_set_cHRM, (png_const_structrp png_ptr,
+ png_inforp info_ptr,
+ double white_x, double white_y, double red_x, double red_y, double green_x,
+ double green_y, double blue_x, double blue_y))
+PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_const_structrp png_ptr,
+ png_inforp info_ptr, double red_X, double red_Y, double red_Z,
+ double green_X, double green_Y, double green_Z, double blue_X,
+ double blue_Y, double blue_Z))
+PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_fixed_point int_white_x,
+ png_fixed_point int_white_y, png_fixed_point int_red_x,
+ png_fixed_point int_red_y, png_fixed_point int_green_x,
+ png_fixed_point int_green_y, png_fixed_point int_blue_x,
+ png_fixed_point int_blue_y))
+PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y,
+ png_fixed_point int_red_Z, png_fixed_point int_green_X,
+ png_fixed_point int_green_Y, png_fixed_point int_green_Z,
+ png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
+ png_fixed_point int_blue_Z))
+#endif
+
+#ifdef PNG_gAMA_SUPPORTED
+PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, double *file_gamma))
+PNG_FIXED_EXPORT(138, png_uint_32, png_get_gAMA_fixed,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_fixed_point *int_file_gamma))
+#endif
+
+#ifdef PNG_gAMA_SUPPORTED
+PNG_FP_EXPORT(139, void, png_set_gAMA, (png_const_structrp png_ptr,
+ png_inforp info_ptr, double file_gamma))
+PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_fixed_point int_file_gamma))
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+PNG_EXPORT(141, png_uint_32, png_get_hIST, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_uint_16p *hist));
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+PNG_EXPORT(142, void, png_set_hIST, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_uint_16p hist));
+#endif
+
+PNG_EXPORT(143, png_uint_32, png_get_IHDR, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, png_uint_32 *width, png_uint_32 *height,
+ int *bit_depth, int *color_type, int *interlace_method,
+ int *compression_method, int *filter_method));
+
+PNG_EXPORT(144, void, png_set_IHDR, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_method, int compression_method,
+ int filter_method));
+
+#ifdef PNG_oFFs_SUPPORTED
+PNG_EXPORT(145, png_uint_32, png_get_oFFs, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, png_int_32 *offset_x, png_int_32 *offset_y,
+ int *unit_type));
+#endif
+
+#ifdef PNG_oFFs_SUPPORTED
+PNG_EXPORT(146, void, png_set_oFFs, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_int_32 offset_x, png_int_32 offset_y,
+ int unit_type));
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+PNG_EXPORT(147, png_uint_32, png_get_pCAL, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_charp *purpose, png_int_32 *X0,
+ png_int_32 *X1, int *type, int *nparams, png_charp *units,
+ png_charpp *params));
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+PNG_EXPORT(148, void, png_set_pCAL, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_charp purpose, png_int_32 X0, png_int_32 X1,
+ int type, int nparams, png_const_charp units, png_charpp params));
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+PNG_EXPORT(149, png_uint_32, png_get_pHYs, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, png_uint_32 *res_x, png_uint_32 *res_y,
+ int *unit_type));
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+PNG_EXPORT(150, void, png_set_pHYs, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type));
+#endif
+
+PNG_EXPORT(151, png_uint_32, png_get_PLTE, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_colorp *palette, int *num_palette));
+
+PNG_EXPORT(152, void, png_set_PLTE, (png_structrp png_ptr,
+ png_inforp info_ptr, png_const_colorp palette, int num_palette));
+
+#ifdef PNG_sBIT_SUPPORTED
+PNG_EXPORT(153, png_uint_32, png_get_sBIT, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_color_8p *sig_bit));
+#endif
+
+#ifdef PNG_sBIT_SUPPORTED
+PNG_EXPORT(154, void, png_set_sBIT, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_color_8p sig_bit));
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+PNG_EXPORT(155, png_uint_32, png_get_sRGB, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, int *file_srgb_intent));
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+PNG_EXPORT(156, void, png_set_sRGB, (png_const_structrp png_ptr,
+ png_inforp info_ptr, int srgb_intent));
+PNG_EXPORT(157, void, png_set_sRGB_gAMA_and_cHRM, (png_const_structrp png_ptr,
+ png_inforp info_ptr, int srgb_intent));
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+PNG_EXPORT(158, png_uint_32, png_get_iCCP, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_charpp name, int *compression_type,
+ png_bytepp profile, png_uint_32 *proflen));
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+PNG_EXPORT(159, void, png_set_iCCP, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_charp name, int compression_type,
+ png_const_bytep profile, png_uint_32 proflen));
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+PNG_EXPORT(160, int, png_get_sPLT, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_sPLT_tpp entries));
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+PNG_EXPORT(161, void, png_set_sPLT, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_sPLT_tp entries, int nentries));
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+/* png_get_text also returns the number of text chunks in *num_text */
+PNG_EXPORT(162, int, png_get_text, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_textp *text_ptr, int *num_text));
+#endif
+
+/* Note while png_set_text() will accept a structure whose text,
+ * language, and translated keywords are NULL pointers, the structure
+ * returned by png_get_text will always contain regular
+ * zero-terminated C strings. They might be empty strings but
+ * they will never be NULL pointers.
+ */
+
+#ifdef PNG_TEXT_SUPPORTED
+PNG_EXPORT(163, void, png_set_text, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_textp text_ptr, int num_text));
+#endif
+
+#ifdef PNG_tIME_SUPPORTED
+PNG_EXPORT(164, png_uint_32, png_get_tIME, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_timep *mod_time));
+#endif
+
+#ifdef PNG_tIME_SUPPORTED
+PNG_EXPORT(165, void, png_set_tIME, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_timep mod_time));
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+PNG_EXPORT(166, png_uint_32, png_get_tRNS, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_bytep *trans_alpha, int *num_trans,
+ png_color_16p *trans_color));
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+PNG_EXPORT(167, void, png_set_tRNS, (png_structrp png_ptr,
+ png_inforp info_ptr, png_const_bytep trans_alpha, int num_trans,
+ png_const_color_16p trans_color));
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, int *unit, double *width, double *height))
+#if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || \
+ defined(PNG_FLOATING_POINT_SUPPORTED)
+/* NOTE: this API is currently implemented using floating point arithmetic,
+ * consequently it can only be used on systems with floating point support.
+ * In any case the range of values supported by png_fixed_point is small and it
+ * is highly recommended that png_get_sCAL_s be used instead.
+ */
+PNG_FIXED_EXPORT(214, png_uint_32, png_get_sCAL_fixed,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit,
+ png_fixed_point *width, png_fixed_point *height))
+#endif
+PNG_EXPORT(169, png_uint_32, png_get_sCAL_s,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit,
+ png_charpp swidth, png_charpp sheight));
+
+PNG_FP_EXPORT(170, void, png_set_sCAL, (png_const_structrp png_ptr,
+ png_inforp info_ptr, int unit, double width, double height))
+PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_const_structrp png_ptr,
+ png_inforp info_ptr, int unit, png_fixed_point width,
+ png_fixed_point height))
+PNG_EXPORT(171, void, png_set_sCAL_s, (png_const_structrp png_ptr,
+ png_inforp info_ptr, int unit,
+ png_const_charp swidth, png_const_charp sheight));
+#endif /* PNG_sCAL_SUPPORTED */
+
+#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+/* Provide the default handling for all unknown chunks or, optionally, for
+ * specific unknown chunks.
+ *
+ * NOTE: prior to 1.6.0 the handling specified for particular chunks on read was
+ * ignored and the default was used, the per-chunk setting only had an effect on
+ * write. If you wish to have chunk-specific handling on read in code that must
+ * work on earlier versions you must use a user chunk callback to specify the
+ * desired handling (keep or discard.)
+ *
+ * The 'keep' parameter is a PNG_HANDLE_CHUNK_ value as listed below. The
+ * parameter is interpreted as follows:
+ *
+ * READ:
+ * PNG_HANDLE_CHUNK_AS_DEFAULT:
+ * Known chunks: do normal libpng processing, do not keep the chunk (but
+ * see the comments below about PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+ * Unknown chunks: for a specific chunk use the global default, when used
+ * as the default discard the chunk data.
+ * PNG_HANDLE_CHUNK_NEVER:
+ * Discard the chunk data.
+ * PNG_HANDLE_CHUNK_IF_SAFE:
+ * Keep the chunk data if the chunk is not critical else raise a chunk
+ * error.
+ * PNG_HANDLE_CHUNK_ALWAYS:
+ * Keep the chunk data.
+ *
+ * If the chunk data is saved it can be retrieved using png_get_unknown_chunks,
+ * below. Notice that specifying "AS_DEFAULT" as a global default is equivalent
+ * to specifying "NEVER", however when "AS_DEFAULT" is used for specific chunks
+ * it simply resets the behavior to the libpng default.
+ *
+ * INTERACTION WTIH USER CHUNK CALLBACKS:
+ * The per-chunk handling is always used when there is a png_user_chunk_ptr
+ * callback and the callback returns 0; the chunk is then always stored *unless*
+ * it is critical and the per-chunk setting is other than ALWAYS. Notice that
+ * the global default is *not* used in this case. (In effect the per-chunk
+ * value is incremented to at least IF_SAFE.)
+ *
+ * IMPORTANT NOTE: this behavior will change in libpng 1.7 - the global and
+ * per-chunk defaults will be honored. If you want to preserve the current
+ * behavior when your callback returns 0 you must set PNG_HANDLE_CHUNK_IF_SAFE
+ * as the default - if you don't do this libpng 1.6 will issue a warning.
+ *
+ * If you want unhandled unknown chunks to be discarded in libpng 1.6 and
+ * earlier simply return '1' (handled).
+ *
+ * PNG_HANDLE_AS_UNKNOWN_SUPPORTED:
+ * If this is *not* set known chunks will always be handled by libpng and
+ * will never be stored in the unknown chunk list. Known chunks listed to
+ * png_set_keep_unknown_chunks will have no effect. If it is set then known
+ * chunks listed with a keep other than AS_DEFAULT will *never* be processed
+ * by libpng, in addition critical chunks must either be processed by the
+ * callback or saved.
+ *
+ * The IHDR and IEND chunks must not be listed. Because this turns off the
+ * default handling for chunks that would otherwise be recognized the
+ * behavior of libpng transformations may well become incorrect!
+ *
+ * WRITE:
+ * When writing chunks the options only apply to the chunks specified by
+ * png_set_unknown_chunks (below), libpng will *always* write known chunks
+ * required by png_set_ calls and will always write the core critical chunks
+ * (as required for PLTE).
+ *
+ * Each chunk in the png_set_unknown_chunks list is looked up in the
+ * png_set_keep_unknown_chunks list to find the keep setting, this is then
+ * interpreted as follows:
+ *
+ * PNG_HANDLE_CHUNK_AS_DEFAULT:
+ * Write safe-to-copy chunks and write other chunks if the global
+ * default is set to _ALWAYS, otherwise don't write this chunk.
+ * PNG_HANDLE_CHUNK_NEVER:
+ * Do not write the chunk.
+ * PNG_HANDLE_CHUNK_IF_SAFE:
+ * Write the chunk if it is safe-to-copy, otherwise do not write it.
+ * PNG_HANDLE_CHUNK_ALWAYS:
+ * Write the chunk.
+ *
+ * Note that the default behavior is effectively the opposite of the read case -
+ * in read unknown chunks are not stored by default, in write they are written
+ * by default. Also the behavior of PNG_HANDLE_CHUNK_IF_SAFE is very different
+ * - on write the safe-to-copy bit is checked, on read the critical bit is
+ * checked and on read if the chunk is critical an error will be raised.
+ *
+ * num_chunks:
+ * ===========
+ * If num_chunks is positive, then the "keep" parameter specifies the manner
+ * for handling only those chunks appearing in the chunk_list array,
+ * otherwise the chunk list array is ignored.
+ *
+ * If num_chunks is 0 the "keep" parameter specifies the default behavior for
+ * unknown chunks, as described above.
+ *
+ * If num_chunks is negative, then the "keep" parameter specifies the manner
+ * for handling all unknown chunks plus all chunks recognized by libpng
+ * except for the IHDR, PLTE, tRNS, IDAT, and IEND chunks (which continue to
+ * be processed by libpng.
+ */
+PNG_EXPORT(172, void, png_set_keep_unknown_chunks, (png_structrp png_ptr,
+ int keep, png_const_bytep chunk_list, int num_chunks));
+
+/* The "keep" PNG_HANDLE_CHUNK_ parameter for the specified chunk is returned;
+ * the result is therefore true (non-zero) if special handling is required,
+ * false for the default handling.
+ */
+PNG_EXPORT(173, int, png_handle_as_unknown, (png_const_structrp png_ptr,
+ png_const_bytep chunk_name));
+#endif
+
+#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+PNG_EXPORT(174, void, png_set_unknown_chunks, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_unknown_chunkp unknowns,
+ int num_unknowns));
+ /* NOTE: prior to 1.6.0 this routine set the 'location' field of the added
+ * unknowns to the location currently stored in the png_struct. This is
+ * invariably the wrong value on write. To fix this call the following API
+ * for each chunk in the list with the correct location. If you know your
+ * code won't be compiled on earlier versions you can rely on
+ * png_set_unknown_chunks(write-ptr, png_get_unknown_chunks(read-ptr)) doing
+ * the correct thing.
+ */
+
+PNG_EXPORT(175, void, png_set_unknown_chunk_location,
+ (png_const_structrp png_ptr, png_inforp info_ptr, int chunk, int location));
+
+PNG_EXPORT(176, int, png_get_unknown_chunks, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_unknown_chunkpp entries));
+#endif
+
+/* Png_free_data() will turn off the "valid" flag for anything it frees.
+ * If you need to turn it off for a chunk that your application has freed,
+ * you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK);
+ */
+PNG_EXPORT(177, void, png_set_invalid, (png_const_structrp png_ptr,
+ png_inforp info_ptr, int mask));
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+/* The "params" pointer is currently not used and is for future expansion. */
+PNG_EXPORT(178, void, png_read_png, (png_structrp png_ptr, png_inforp info_ptr,
+ int transforms, png_voidp params));
+PNG_EXPORT(179, void, png_write_png, (png_structrp png_ptr, png_inforp info_ptr,
+ int transforms, png_voidp params));
+#endif
+
+PNG_EXPORT(180, png_const_charp, png_get_copyright,
+ (png_const_structrp png_ptr));
+PNG_EXPORT(181, png_const_charp, png_get_header_ver,
+ (png_const_structrp png_ptr));
+PNG_EXPORT(182, png_const_charp, png_get_header_version,
+ (png_const_structrp png_ptr));
+PNG_EXPORT(183, png_const_charp, png_get_libpng_ver,
+ (png_const_structrp png_ptr));
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+PNG_EXPORT(184, png_uint_32, png_permit_mng_features, (png_structrp png_ptr,
+ png_uint_32 mng_features_permitted));
+#endif
+
+/* For use in png_set_keep_unknown, added to version 1.2.6 */
+#define PNG_HANDLE_CHUNK_AS_DEFAULT 0
+#define PNG_HANDLE_CHUNK_NEVER 1
+#define PNG_HANDLE_CHUNK_IF_SAFE 2
+#define PNG_HANDLE_CHUNK_ALWAYS 3
+#define PNG_HANDLE_CHUNK_LAST 4
+
+/* Strip the prepended error numbers ("#nnn ") from error and warning
+ * messages before passing them to the error or warning handler.
+ */
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+PNG_EXPORT(185, void, png_set_strip_error_numbers, (png_structrp png_ptr,
+ png_uint_32 strip_mode));
+#endif
+
+/* Added in libpng-1.2.6 */
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+PNG_EXPORT(186, void, png_set_user_limits, (png_structrp png_ptr,
+ png_uint_32 user_width_max, png_uint_32 user_height_max));
+PNG_EXPORT(187, png_uint_32, png_get_user_width_max,
+ (png_const_structrp png_ptr));
+PNG_EXPORT(188, png_uint_32, png_get_user_height_max,
+ (png_const_structrp png_ptr));
+/* Added in libpng-1.4.0 */
+PNG_EXPORT(189, void, png_set_chunk_cache_max, (png_structrp png_ptr,
+ png_uint_32 user_chunk_cache_max));
+PNG_EXPORT(190, png_uint_32, png_get_chunk_cache_max,
+ (png_const_structrp png_ptr));
+/* Added in libpng-1.4.1 */
+PNG_EXPORT(191, void, png_set_chunk_malloc_max, (png_structrp png_ptr,
+ png_alloc_size_t user_chunk_cache_max));
+PNG_EXPORT(192, png_alloc_size_t, png_get_chunk_malloc_max,
+ (png_const_structrp png_ptr));
+#endif
+
+#if defined(PNG_INCH_CONVERSIONS_SUPPORTED)
+PNG_EXPORT(193, png_uint_32, png_get_pixels_per_inch,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+
+PNG_EXPORT(194, png_uint_32, png_get_x_pixels_per_inch,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+
+PNG_EXPORT(195, png_uint_32, png_get_y_pixels_per_inch,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr));
+
+PNG_FP_EXPORT(196, float, png_get_x_offset_inches,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr))
+#ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
+PNG_FIXED_EXPORT(211, png_fixed_point, png_get_x_offset_inches_fixed,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr))
+#endif
+
+PNG_FP_EXPORT(197, float, png_get_y_offset_inches, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr))
+#ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
+PNG_FIXED_EXPORT(212, png_fixed_point, png_get_y_offset_inches_fixed,
+ (png_const_structrp png_ptr, png_const_inforp info_ptr))
+#endif
+
+# ifdef PNG_pHYs_SUPPORTED
+PNG_EXPORT(198, png_uint_32, png_get_pHYs_dpi, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, png_uint_32 *res_x, png_uint_32 *res_y,
+ int *unit_type));
+# endif /* PNG_pHYs_SUPPORTED */
+#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
+
+/* Added in libpng-1.4.0 */
+#ifdef PNG_IO_STATE_SUPPORTED
+PNG_EXPORT(199, png_uint_32, png_get_io_state, (png_const_structrp png_ptr));
+
+/* Removed from libpng 1.6; use png_get_io_chunk_type. */
+PNG_REMOVED(200, png_const_bytep, png_get_io_chunk_name, (png_structrp png_ptr),
+ PNG_DEPRECATED)
+
+PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type,
+ (png_const_structrp png_ptr));
+
+/* The flags returned by png_get_io_state() are the following: */
+# define PNG_IO_NONE 0x0000 /* no I/O at this moment */
+# define PNG_IO_READING 0x0001 /* currently reading */
+# define PNG_IO_WRITING 0x0002 /* currently writing */
+# define PNG_IO_SIGNATURE 0x0010 /* currently at the file signature */
+# define PNG_IO_CHUNK_HDR 0x0020 /* currently at the chunk header */
+# define PNG_IO_CHUNK_DATA 0x0040 /* currently at the chunk data */
+# define PNG_IO_CHUNK_CRC 0x0080 /* currently at the chunk crc */
+# define PNG_IO_MASK_OP 0x000f /* current operation: reading/writing */
+# define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
+#endif /* ?PNG_IO_STATE_SUPPORTED */
+
+/* Interlace support. The following macros are always defined so that if
+ * libpng interlace handling is turned off the macros may be used to handle
+ * interlaced images within the application.
+ */
+#define PNG_INTERLACE_ADAM7_PASSES 7
+
+/* Two macros to return the first row and first column of the original,
+ * full, image which appears in a given pass. 'pass' is in the range 0
+ * to 6 and the result is in the range 0 to 7.
+ */
+#define PNG_PASS_START_ROW(pass) (((1&~(pass))<<(3-((pass)>>1)))&7)
+#define PNG_PASS_START_COL(pass) (((1& (pass))<<(3-(((pass)+1)>>1)))&7)
+
+/* A macro to return the offset between pixels in the output row for a pair of
+ * pixels in the input - effectively the inverse of the 'COL_SHIFT' macro that
+ * follows. Note that ROW_OFFSET is the offset from one row to the next whereas
+ * COL_OFFSET is from one column to the next, within a row.
+ */
+#define PNG_PASS_ROW_OFFSET(pass) ((pass)>2?(8>>(((pass)-1)>>1)):8)
+#define PNG_PASS_COL_OFFSET(pass) (1<<((7-(pass))>>1))
+
+/* Two macros to help evaluate the number of rows or columns in each
+ * pass. This is expressed as a shift - effectively log2 of the number or
+ * rows or columns in each 8x8 tile of the original image.
+ */
+#define PNG_PASS_ROW_SHIFT(pass) ((pass)>2?(8-(pass))>>1:3)
+#define PNG_PASS_COL_SHIFT(pass) ((pass)>1?(7-(pass))>>1:3)
+
+/* Hence two macros to determine the number of rows or columns in a given
+ * pass of an image given its height or width. In fact these macros may
+ * return non-zero even though the sub-image is empty, because the other
+ * dimension may be empty for a small image.
+ */
+#define PNG_PASS_ROWS(height, pass) (((height)+(((1<<PNG_PASS_ROW_SHIFT(pass))\
+ -1)-PNG_PASS_START_ROW(pass)))>>PNG_PASS_ROW_SHIFT(pass))
+#define PNG_PASS_COLS(width, pass) (((width)+(((1<<PNG_PASS_COL_SHIFT(pass))\
+ -1)-PNG_PASS_START_COL(pass)))>>PNG_PASS_COL_SHIFT(pass))
+
+/* For the reader row callbacks (both progressive and sequential) it is
+ * necessary to find the row in the output image given a row in an interlaced
+ * image, so two more macros:
+ */
+#define PNG_ROW_FROM_PASS_ROW(y_in, pass) \
+ (((y_in)<<PNG_PASS_ROW_SHIFT(pass))+PNG_PASS_START_ROW(pass))
+#define PNG_COL_FROM_PASS_COL(x_in, pass) \
+ (((x_in)<<PNG_PASS_COL_SHIFT(pass))+PNG_PASS_START_COL(pass))
+
+/* Two macros which return a boolean (0 or 1) saying whether the given row
+ * or column is in a particular pass. These use a common utility macro that
+ * returns a mask for a given pass - the offset 'off' selects the row or
+ * column version. The mask has the appropriate bit set for each column in
+ * the tile.
+ */
+#define PNG_PASS_MASK(pass,off) ( \
+ ((0x110145AF>>(((7-(off))-(pass))<<2)) & 0xF) | \
+ ((0x01145AF0>>(((7-(off))-(pass))<<2)) & 0xF0))
+
+#define PNG_ROW_IN_INTERLACE_PASS(y, pass) \
+ ((PNG_PASS_MASK(pass,0) >> ((y)&7)) & 1)
+#define PNG_COL_IN_INTERLACE_PASS(x, pass) \
+ ((PNG_PASS_MASK(pass,1) >> ((x)&7)) & 1)
+
+#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
+/* With these routines we avoid an integer divide, which will be slower on
+ * most machines. However, it does take more operations than the corresponding
+ * divide method, so it may be slower on a few RISC systems. There are two
+ * shifts (by 8 or 16 bits) and an addition, versus a single integer divide.
+ *
+ * Note that the rounding factors are NOT supposed to be the same! 128 and
+ * 32768 are correct for the NODIV code; 127 and 32767 are correct for the
+ * standard method.
+ *
+ * [Optimized code by Greg Roelofs and Mark Adler...blame us for bugs. :-) ]
+ */
+
+ /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
+
+# define png_composite(composite, fg, alpha, bg) \
+ { png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) \
+ * (png_uint_16)(alpha) \
+ + (png_uint_16)(bg)*(png_uint_16)(255 \
+ - (png_uint_16)(alpha)) + 128); \
+ (composite) = (png_byte)((temp + (temp >> 8)) >> 8); }
+
+# define png_composite_16(composite, fg, alpha, bg) \
+ { png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) \
+ * (png_uint_32)(alpha) \
+ + (png_uint_32)(bg)*(65535 \
+ - (png_uint_32)(alpha)) + 32768); \
+ (composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); }
+
+#else /* Standard method using integer division */
+
+# define png_composite(composite, fg, alpha, bg) \
+ (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \
+ (png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \
+ 127) / 255)
+
+# define png_composite_16(composite, fg, alpha, bg) \
+ (composite) = (png_uint_16)(((png_uint_32)(fg) * (png_uint_32)(alpha) + \
+ (png_uint_32)(bg)*(png_uint_32)(65535 - (png_uint_32)(alpha)) + \
+ 32767) / 65535)
+#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */
+
+#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
+PNG_EXPORT(201, png_uint_32, png_get_uint_32, (png_const_bytep buf));
+PNG_EXPORT(202, png_uint_16, png_get_uint_16, (png_const_bytep buf));
+PNG_EXPORT(203, png_int_32, png_get_int_32, (png_const_bytep buf));
+#endif
+
+PNG_EXPORT(204, png_uint_32, png_get_uint_31, (png_const_structrp png_ptr,
+ png_const_bytep buf));
+/* No png_get_int_16 -- may be added if there's a real need for it. */
+
+/* Place a 32-bit number into a buffer in PNG byte order (big-endian). */
+#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
+PNG_EXPORT(205, void, png_save_uint_32, (png_bytep buf, png_uint_32 i));
+#endif
+#ifdef PNG_SAVE_INT_32_SUPPORTED
+PNG_EXPORT(206, void, png_save_int_32, (png_bytep buf, png_int_32 i));
+#endif
+
+/* Place a 16-bit number into a buffer in PNG byte order.
+ * The parameter is declared unsigned int, not png_uint_16,
+ * just to avoid potential problems on pre-ANSI C compilers.
+ */
+#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
+PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
+/* No png_save_int_16 -- may be added if there's a real need for it. */
+#endif
+
+#ifdef PNG_USE_READ_MACROS
+/* Inline macros to do direct reads of bytes from the input buffer.
+ * The png_get_int_32() routine assumes we are using two's complement
+ * format for negative values, which is almost certainly true.
+ */
+# define PNG_get_uint_32(buf) \
+ (((png_uint_32)(*(buf)) << 24) + \
+ ((png_uint_32)(*((buf) + 1)) << 16) + \
+ ((png_uint_32)(*((buf) + 2)) << 8) + \
+ ((png_uint_32)(*((buf) + 3))))
+
+ /* From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
+ * function) incorrectly returned a value of type png_uint_32.
+ */
+# define PNG_get_uint_16(buf) \
+ ((png_uint_16) \
+ (((unsigned int)(*(buf)) << 8) + \
+ ((unsigned int)(*((buf) + 1)))))
+
+# define PNG_get_int_32(buf) \
+ ((png_int_32)((*(buf) & 0x80) \
+ ? -((png_int_32)((png_get_uint_32(buf) ^ 0xffffffffL) + 1)) \
+ : (png_int_32)png_get_uint_32(buf)))
+
+ /* If PNG_PREFIX is defined the same thing as below happens in pnglibconf.h,
+ * but defining a macro name prefixed with PNG_PREFIX.
+ */
+# ifndef PNG_PREFIX
+# define png_get_uint_32(buf) PNG_get_uint_32(buf)
+# define png_get_uint_16(buf) PNG_get_uint_16(buf)
+# define png_get_int_32(buf) PNG_get_int_32(buf)
+# endif
+#else
+# ifdef PNG_PREFIX
+ /* No macros; revert to the (redefined) function */
+# define PNG_get_uint_32 (png_get_uint_32)
+# define PNG_get_uint_16 (png_get_uint_16)
+# define PNG_get_int_32 (png_get_int_32)
+# endif
+#endif
+
+/*******************************************************************************
+ * SIMPLIFIED API
+ *******************************************************************************
+ *
+ * Please read the documentation in libpng-manual.txt (TODO: write said
+ * documentation) if you don't understand what follows.
+ *
+ * The simplified API hides the details of both libpng and the PNG file format
+ * itself. It allows PNG files to be read into a very limited number of
+ * in-memory bitmap formats or to be written from the same formats. If these
+ * formats do not accomodate your needs then you can, and should, use the more
+ * sophisticated APIs above - these support a wide variety of in-memory formats
+ * and a wide variety of sophisticated transformations to those formats as well
+ * as a wide variety of APIs to manipulate ancillary information.
+ *
+ * To read a PNG file using the simplified API:
+ *
+ * 1) Declare a 'png_image' structure (see below) on the stack and set the
+ * version field to PNG_IMAGE_VERSION.
+ * 2) Call the appropriate png_image_begin_read... function.
+ * 3) Set the png_image 'format' member to the required sample format.
+ * 4) Allocate a buffer for the image and, if required, the color-map.
+ * 5) Call png_image_finish_read to read the image and, if required, the
+ * color-map into your buffers.
+ *
+ * There are no restrictions on the format of the PNG input itself; all valid
+ * color types, bit depths, and interlace methods are acceptable, and the
+ * input image is transformed as necessary to the requested in-memory format
+ * during the png_image_finish_read() step. The only caveat is that if you
+ * request a color-mapped image from a PNG that is full-color or makes
+ * complex use of an alpha channel the transformation is extremely lossy and the
+ * result may look terrible.
+ *
+ * To write a PNG file using the simplified API:
+ *
+ * 1) Declare a 'png_image' structure on the stack and memset() it to all zero.
+ * 2) Initialize the members of the structure that describe the image, setting
+ * the 'format' member to the format of the image samples.
+ * 3) Call the appropriate png_image_write... function with a pointer to the
+ * image and, if necessary, the color-map to write the PNG data.
+ *
+ * png_image is a structure that describes the in-memory format of an image
+ * when it is being read or defines the in-memory format of an image that you
+ * need to write:
+ */
+#define PNG_IMAGE_VERSION 1
+
+typedef struct png_control *png_controlp;
+typedef struct
+{
+ png_controlp opaque; /* Initialize to NULL, free with png_image_free */
+ png_uint_32 version; /* Set to PNG_IMAGE_VERSION */
+ png_uint_32 width; /* Image width in pixels (columns) */
+ png_uint_32 height; /* Image height in pixels (rows) */
+ png_uint_32 format; /* Image format as defined below */
+ png_uint_32 flags; /* A bit mask containing informational flags */
+ png_uint_32 colormap_entries;
+ /* Number of entries in the color-map */
+
+ /* In the event of an error or warning the following field will be set to a
+ * non-zero value and the 'message' field will contain a '\0' terminated
+ * string with the libpng error or warning message. If both warnings and
+ * an error were encountered, only the error is recorded. If there
+ * are multiple warnings, only the first one is recorded.
+ *
+ * The upper 30 bits of this value are reserved, the low two bits contain
+ * a value as follows:
+ */
+# define PNG_IMAGE_WARNING 1
+# define PNG_IMAGE_ERROR 2
+ /*
+ * The result is a two bit code such that a value more than 1 indicates
+ * a failure in the API just called:
+ *
+ * 0 - no warning or error
+ * 1 - warning
+ * 2 - error
+ * 3 - error preceded by warning
+ */
+# define PNG_IMAGE_FAILED(png_cntrl) ((((png_cntrl).warning_or_error)&0x03)>1)
+
+ png_uint_32 warning_or_error;
+
+ char message[64];
+} png_image, *png_imagep;
+
+/* The samples of the image have one to four channels whose components have
+ * original values in the range 0 to 1.0:
+ *
+ * 1: A single gray or luminance channel (G).
+ * 2: A gray/luminance channel and an alpha channel (GA).
+ * 3: Three red, green, blue color channels (RGB).
+ * 4: Three color channels and an alpha channel (RGBA).
+ *
+ * The components are encoded in one of two ways:
+ *
+ * a) As a small integer, value 0..255, contained in a single byte. For the
+ * alpha channel the original value is simply value/255. For the color or
+ * luminance channels the value is encoded according to the sRGB specification
+ * and matches the 8-bit format expected by typical display devices.
+ *
+ * The color/gray channels are not scaled (pre-multiplied) by the alpha
+ * channel and are suitable for passing to color management software.
+ *
+ * b) As a value in the range 0..65535, contained in a 2-byte integer. All
+ * channels can be converted to the original value by dividing by 65535; all
+ * channels are linear. Color channels use the RGB encoding (RGB end-points) of
+ * the sRGB specification. This encoding is identified by the
+ * PNG_FORMAT_FLAG_LINEAR flag below.
+ *
+ * When the simplified API needs to convert between sRGB and linear colorspaces,
+ * the actual sRGB transfer curve defined in the sRGB specification (see the
+ * article at http://en.wikipedia.org/wiki/SRGB) is used, not the gamma=1/2.2
+ * approximation used elsewhere in libpng.
+ *
+ * When an alpha channel is present it is expected to denote pixel coverage
+ * of the color or luminance channels and is returned as an associated alpha
+ * channel: the color/gray channels are scaled (pre-multiplied) by the alpha
+ * value.
+ *
+ * The samples are either contained directly in the image data, between 1 and 8
+ * bytes per pixel according to the encoding, or are held in a color-map indexed
+ * by bytes in the image data. In the case of a color-map the color-map entries
+ * are individual samples, encoded as above, and the image data has one byte per
+ * pixel to select the relevant sample from the color-map.
+ */
+
+/* PNG_FORMAT_*
+ *
+ * #defines to be used in png_image::format. Each #define identifies a
+ * particular layout of sample data and, if present, alpha values. There are
+ * separate defines for each of the two component encodings.
+ *
+ * A format is built up using single bit flag values. All combinations are
+ * valid. Formats can be built up from the flag values or you can use one of
+ * the predefined values below. When testing formats always use the FORMAT_FLAG
+ * macros to test for individual features - future versions of the library may
+ * add new flags.
+ *
+ * When reading or writing color-mapped images the format should be set to the
+ * format of the entries in the color-map then png_image_{read,write}_colormap
+ * called to read or write the color-map and set the format correctly for the
+ * image data. Do not set the PNG_FORMAT_FLAG_COLORMAP bit directly!
+ *
+ * NOTE: libpng can be built with particular features disabled, if you see
+ * compiler errors because the definition of one of the following flags has been
+ * compiled out it is because libpng does not have the required support. It is
+ * possible, however, for the libpng configuration to enable the format on just
+ * read or just write; in that case you may see an error at run time. You can
+ * guard against this by checking for the definition of the appropriate
+ * "_SUPPORTED" macro, one of:
+ *
+ * PNG_SIMPLIFIED_{READ,WRITE}_{BGR,AFIRST}_SUPPORTED
+ */
+#define PNG_FORMAT_FLAG_ALPHA 0x01U /* format with an alpha channel */
+#define PNG_FORMAT_FLAG_COLOR 0x02U /* color format: otherwise grayscale */
+#define PNG_FORMAT_FLAG_LINEAR 0x04U /* 2 byte channels else 1 byte */
+#define PNG_FORMAT_FLAG_COLORMAP 0x08U /* image data is color-mapped */
+
+#ifdef PNG_FORMAT_BGR_SUPPORTED
+# define PNG_FORMAT_FLAG_BGR 0x10U /* BGR colors, else order is RGB */
+#endif
+
+#ifdef PNG_FORMAT_AFIRST_SUPPORTED
+# define PNG_FORMAT_FLAG_AFIRST 0x20U /* alpha channel comes first */
+#endif
+
+/* Commonly used formats have predefined macros.
+ *
+ * First the single byte (sRGB) formats:
+ */
+#define PNG_FORMAT_GRAY 0
+#define PNG_FORMAT_GA PNG_FORMAT_FLAG_ALPHA
+#define PNG_FORMAT_AG (PNG_FORMAT_GA|PNG_FORMAT_FLAG_AFIRST)
+#define PNG_FORMAT_RGB PNG_FORMAT_FLAG_COLOR
+#define PNG_FORMAT_BGR (PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_BGR)
+#define PNG_FORMAT_RGBA (PNG_FORMAT_RGB|PNG_FORMAT_FLAG_ALPHA)
+#define PNG_FORMAT_ARGB (PNG_FORMAT_RGBA|PNG_FORMAT_FLAG_AFIRST)
+#define PNG_FORMAT_BGRA (PNG_FORMAT_BGR|PNG_FORMAT_FLAG_ALPHA)
+#define PNG_FORMAT_ABGR (PNG_FORMAT_BGRA|PNG_FORMAT_FLAG_AFIRST)
+
+/* Then the linear 2-byte formats. When naming these "Y" is used to
+ * indicate a luminance (gray) channel.
+ */
+#define PNG_FORMAT_LINEAR_Y PNG_FORMAT_FLAG_LINEAR
+#define PNG_FORMAT_LINEAR_Y_ALPHA (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_ALPHA)
+#define PNG_FORMAT_LINEAR_RGB (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR)
+#define PNG_FORMAT_LINEAR_RGB_ALPHA \
+ (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_ALPHA)
+
+/* With color-mapped formats the image data is one byte for each pixel, the byte
+ * is an index into the color-map which is formatted as above. To obtain a
+ * color-mapped format it is sufficient just to add the PNG_FOMAT_FLAG_COLORMAP
+ * to one of the above definitions, or you can use one of the definitions below.
+ */
+#define PNG_FORMAT_RGB_COLORMAP (PNG_FORMAT_RGB|PNG_FORMAT_FLAG_COLORMAP)
+#define PNG_FORMAT_BGR_COLORMAP (PNG_FORMAT_BGR|PNG_FORMAT_FLAG_COLORMAP)
+#define PNG_FORMAT_RGBA_COLORMAP (PNG_FORMAT_RGBA|PNG_FORMAT_FLAG_COLORMAP)
+#define PNG_FORMAT_ARGB_COLORMAP (PNG_FORMAT_ARGB|PNG_FORMAT_FLAG_COLORMAP)
+#define PNG_FORMAT_BGRA_COLORMAP (PNG_FORMAT_BGRA|PNG_FORMAT_FLAG_COLORMAP)
+#define PNG_FORMAT_ABGR_COLORMAP (PNG_FORMAT_ABGR|PNG_FORMAT_FLAG_COLORMAP)
+
+/* PNG_IMAGE macros
+ *
+ * These are convenience macros to derive information from a png_image
+ * structure. The PNG_IMAGE_SAMPLE_ macros return values appropriate to the
+ * actual image sample values - either the entries in the color-map or the
+ * pixels in the image. The PNG_IMAGE_PIXEL_ macros return corresponding values
+ * for the pixels and will always return 1 for color-mapped formats. The
+ * remaining macros return information about the rows in the image and the
+ * complete image.
+ *
+ * NOTE: All the macros that take a png_image::format parameter are compile time
+ * constants if the format parameter is, itself, a constant. Therefore these
+ * macros can be used in array declarations and case labels where required.
+ * Similarly the macros are also pre-processor constants (sizeof is not used) so
+ * they can be used in #if tests.
+ *
+ * First the information about the samples.
+ */
+#define PNG_IMAGE_SAMPLE_CHANNELS(fmt)\
+ (((fmt)&(PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_ALPHA))+1)
+ /* Return the total number of channels in a given format: 1..4 */
+
+#define PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt)\
+ ((((fmt) & PNG_FORMAT_FLAG_LINEAR) >> 2)+1)
+ /* Return the size in bytes of a single component of a pixel or color-map
+ * entry (as appropriate) in the image: 1 or 2.
+ */
+
+#define PNG_IMAGE_SAMPLE_SIZE(fmt)\
+ (PNG_IMAGE_SAMPLE_CHANNELS(fmt) * PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt))
+ /* This is the size of the sample data for one sample. If the image is
+ * color-mapped it is the size of one color-map entry (and image pixels are
+ * one byte in size), otherwise it is the size of one image pixel.
+ */
+
+#define PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(fmt)\
+ (PNG_IMAGE_SAMPLE_CHANNELS(fmt) * 256)
+ /* The maximum size of the color-map required by the format expressed in a
+ * count of components. This can be used to compile-time allocate a
+ * color-map:
+ *
+ * png_uint_16 colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(linear_fmt)];
+ *
+ * png_byte colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(sRGB_fmt)];
+ *
+ * Alternatively use the PNG_IMAGE_COLORMAP_SIZE macro below to use the
+ * information from one of the png_image_begin_read_ APIs and dynamically
+ * allocate the required memory.
+ */
+
+/* Corresponding information about the pixels */
+#define PNG_IMAGE_PIXEL_(test,fmt)\
+ (((fmt)&PNG_FORMAT_FLAG_COLORMAP)?1:test(fmt))
+
+#define PNG_IMAGE_PIXEL_CHANNELS(fmt)\
+ PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_CHANNELS,fmt)
+ /* The number of separate channels (components) in a pixel; 1 for a
+ * color-mapped image.
+ */
+
+#define PNG_IMAGE_PIXEL_COMPONENT_SIZE(fmt)\
+ PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_COMPONENT_SIZE,fmt)
+ /* The size, in bytes, of each component in a pixel; 1 for a color-mapped
+ * image.
+ */
+
+#define PNG_IMAGE_PIXEL_SIZE(fmt) PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_SIZE,fmt)
+ /* The size, in bytes, of a complete pixel; 1 for a color-mapped image. */
+
+/* Information about the whole row, or whole image */
+#define PNG_IMAGE_ROW_STRIDE(image)\
+ (PNG_IMAGE_PIXEL_CHANNELS((image).format) * (image).width)
+ /* Return the total number of components in a single row of the image; this
+ * is the minimum 'row stride', the minimum count of components between each
+ * row. For a color-mapped image this is the minimum number of bytes in a
+ * row.
+ */
+
+#define PNG_IMAGE_BUFFER_SIZE(image, row_stride)\
+ (PNG_IMAGE_PIXEL_COMPONENT_SIZE((image).format)*(image).height*(row_stride))
+ /* Return the size, in bytes, of an image buffer given a png_image and a row
+ * stride - the number of components to leave space for in each row.
+ */
+
+#define PNG_IMAGE_SIZE(image)\
+ PNG_IMAGE_BUFFER_SIZE(image, PNG_IMAGE_ROW_STRIDE(image))
+ /* Return the size, in bytes, of the image in memory given just a png_image;
+ * the row stride is the minimum stride required for the image.
+ */
+
+#define PNG_IMAGE_COLORMAP_SIZE(image)\
+ (PNG_IMAGE_SAMPLE_SIZE((image).format) * (image).colormap_entries)
+ /* Return the size, in bytes, of the color-map of this image. If the image
+ * format is not a color-map format this will return a size sufficient for
+ * 256 entries in the given format; check PNG_FORMAT_FLAG_COLORMAP if
+ * you don't want to allocate a color-map in this case.
+ */
+
+/* PNG_IMAGE_FLAG_*
+ *
+ * Flags containing additional information about the image are held in the
+ * 'flags' field of png_image.
+ */
+#define PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB 0x01
+ /* This indicates the the RGB values of the in-memory bitmap do not
+ * correspond to the red, green and blue end-points defined by sRGB.
+ */
+
+#define PNG_IMAGE_FLAG_FAST 0x02
+ /* On write emphasise speed over compression; the resultant PNG file will be
+ * larger but will be produced significantly faster, particular for large
+ * images. Do not use this option for images which will be distributed, only
+ * used it when producing intermediate files that will be read back in
+ * repeatedly. For a typical 24-bit image the option will double the read
+ * speed at the cost of increasing the image size by 25%, however for many
+ * more compressible images the PNG file can be 10 times larger with only a
+ * slight speed gain.
+ */
+
+#define PNG_IMAGE_FLAG_16BIT_sRGB 0x04
+ /* On read if the image is a 16-bit per component image and there is no gAMA
+ * or sRGB chunk assume that the components are sRGB encoded. Notice that
+ * images output by the simplified API always have gamma information; setting
+ * this flag only affects the interpretation of 16-bit images from an
+ * external source. It is recommended that the application expose this flag
+ * to the user; the user can normally easily recognize the difference between
+ * linear and sRGB encoding. This flag has no effect on write - the data
+ * passed to the write APIs must have the correct encoding (as defined
+ * above.)
+ *
+ * If the flag is not set (the default) input 16-bit per component data is
+ * assumed to be linear.
+ *
+ * NOTE: the flag can only be set after the png_image_begin_read_ call,
+ * because that call initializes the 'flags' field.
+ */
+
+#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
+/* READ APIs
+ * ---------
+ *
+ * The png_image passed to the read APIs must have been initialized by setting
+ * the png_controlp field 'opaque' to NULL (or, safer, memset the whole thing.)
+ */
+#ifdef PNG_STDIO_SUPPORTED
+PNG_EXPORT(234, int, png_image_begin_read_from_file, (png_imagep image,
+ const char *file_name));
+ /* The named file is opened for read and the image header is filled in
+ * from the PNG header in the file.
+ */
+
+PNG_EXPORT(235, int, png_image_begin_read_from_stdio, (png_imagep image,
+ FILE* file));
+ /* The PNG header is read from the stdio FILE object. */
+#endif /* PNG_STDIO_SUPPORTED */
+
+PNG_EXPORT(236, int, png_image_begin_read_from_memory, (png_imagep image,
+ png_const_voidp memory, png_size_t size));
+ /* The PNG header is read from the given memory buffer. */
+
+PNG_EXPORT(237, int, png_image_finish_read, (png_imagep image,
+ png_const_colorp background, void *buffer, png_int_32 row_stride,
+ void *colormap));
+ /* Finish reading the image into the supplied buffer and clean up the
+ * png_image structure.
+ *
+ * row_stride is the step, in byte or 2-byte units as appropriate,
+ * between adjacent rows. A positive stride indicates that the top-most row
+ * is first in the buffer - the normal top-down arrangement. A negative
+ * stride indicates that the bottom-most row is first in the buffer.
+ *
+ * background need only be supplied if an alpha channel must be removed from
+ * a png_byte format and the removal is to be done by compositing on a solid
+ * color; otherwise it may be NULL and any composition will be done directly
+ * onto the buffer. The value is an sRGB color to use for the background,
+ * for grayscale output the green channel is used.
+ *
+ * background must be supplied when an alpha channel must be removed from a
+ * single byte color-mapped output format, in other words if:
+ *
+ * 1) The original format from png_image_begin_read_from_* had
+ * PNG_FORMAT_FLAG_ALPHA set.
+ * 2) The format set by the application does not.
+ * 3) The format set by the application has PNG_FORMAT_FLAG_COLORMAP set and
+ * PNG_FORMAT_FLAG_LINEAR *not* set.
+ *
+ * For linear output removing the alpha channel is always done by compositing
+ * on black and background is ignored.
+ *
+ * colormap must be supplied when PNG_FORMAT_FLAG_COLORMAP is set. It must
+ * be at least the size (in bytes) returned by PNG_IMAGE_COLORMAP_SIZE.
+ * image->colormap_entries will be updated to the actual number of entries
+ * written to the colormap; this may be less than the original value.
+ */
+
+PNG_EXPORT(238, void, png_image_free, (png_imagep image));
+ /* Free any data allocated by libpng in image->opaque, setting the pointer to
+ * NULL. May be called at any time after the structure is initialized.
+ */
+#endif /* PNG_SIMPLIFIED_READ_SUPPORTED */
+
+#ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
+#ifdef PNG_STDIO_SUPPORTED
+/* WRITE APIS
+ * ----------
+ * For write you must initialize a png_image structure to describe the image to
+ * be written. To do this use memset to set the whole structure to 0 then
+ * initialize fields describing your image.
+ *
+ * version: must be set to PNG_IMAGE_VERSION
+ * opaque: must be initialized to NULL
+ * width: image width in pixels
+ * height: image height in rows
+ * format: the format of the data (image and color-map) you wish to write
+ * flags: set to 0 unless one of the defined flags applies; set
+ * PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB for color format images where the RGB
+ * values do not correspond to the colors in sRGB.
+ * colormap_entries: set to the number of entries in the color-map (0 to 256)
+ */
+PNG_EXPORT(239, int, png_image_write_to_file, (png_imagep image,
+ const char *file, int convert_to_8bit, const void *buffer,
+ png_int_32 row_stride, const void *colormap));
+ /* Write the image to the named file. */
+
+PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file,
+ int convert_to_8_bit, const void *buffer, png_int_32 row_stride,
+ const void *colormap));
+ /* Write the image to the given (FILE*). */
+
+/* With both write APIs if image is in one of the linear formats with 16-bit
+ * data then setting convert_to_8_bit will cause the output to be an 8-bit PNG
+ * gamma encoded according to the sRGB specification, otherwise a 16-bit linear
+ * encoded PNG file is written.
+ *
+ * With color-mapped data formats the colormap parameter point to a color-map
+ * with at least image->colormap_entries encoded in the specified format. If
+ * the format is linear the written PNG color-map will be converted to sRGB
+ * regardless of the convert_to_8_bit flag.
+ *
+ * With all APIs row_stride is handled as in the read APIs - it is the spacing
+ * from one row to the next in component sized units (1 or 2 bytes) and if
+ * negative indicates a bottom-up row layout in the buffer.
+ *
+ * Note that the write API does not support interlacing or sub-8-bit pixels.
+ */
+#endif /* PNG_STDIO_SUPPORTED */
+#endif /* PNG_SIMPLIFIED_WRITE_SUPPORTED */
+/*******************************************************************************
+ * END OF SIMPLIFIED API
+ ******************************************************************************/
+
+#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+PNG_EXPORT(242, void, png_set_check_for_invalid_index,
+ (png_structrp png_ptr, int allowed));
+# ifdef PNG_GET_PALETTE_MAX_SUPPORTED
+PNG_EXPORT(243, int, png_get_palette_max, (png_const_structp png_ptr,
+ png_const_infop info_ptr));
+# endif
+#endif /* CHECK_FOR_INVALID_INDEX */
+
+/*******************************************************************************
+ * IMPLEMENTATION OPTIONS
+ *******************************************************************************
+ *
+ * Support for arbitrary implementation-specific optimizations. The API allows
+ * particular options to be turned on or off. 'Option' is the number of the
+ * option and 'onoff' is 0 (off) or non-0 (on). The value returned is given
+ * by the PNG_OPTION_ defines below.
+ *
+ * HARDWARE: normally hardware capabilites, such as the Intel SSE instructions,
+ * are detected at run time, however sometimes it may be impossible
+ * to do this in user mode, in which case it is necessary to discover
+ * the capabilities in an OS specific way. Such capabilities are
+ * listed here when libpng has support for them and must be turned
+ * ON by the application if present.
+ *
+ * SOFTWARE: sometimes software optimizations actually result in performance
+ * decrease on some architectures or systems, or with some sets of
+ * PNG images. 'Software' options allow such optimizations to be
+ * selected at run time.
+ */
+#ifdef PNG_SET_OPTION_SUPPORTED
+#ifdef PNG_ARM_NEON_API_SUPPORTED
+# define PNG_ARM_NEON 0 /* HARDWARE: ARM Neon SIMD instructions supported */
+#endif
+#define PNG_MAXIMUM_INFLATE_WINDOW 2 /* SOFTWARE: force maximum window */
+#define PNG_OPTION_NEXT 4 /* Next option - numbers must be even */
+
+/* Return values: NOTE: there are four values and 'off' is *not* zero */
+#define PNG_OPTION_UNSET 0 /* Unset - defaults to off */
+#define PNG_OPTION_INVALID 1 /* Option number out of range */
+#define PNG_OPTION_OFF 2
+#define PNG_OPTION_ON 3
+
+PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option,
+ int onoff));
+#endif
+
+/*******************************************************************************
+ * END OF HARDWARE OPTIONS
+ ******************************************************************************/
+
+/* Maintainer: Put new public prototypes here ^, in libpng.3, and project
+ * defs, scripts/pnglibconf.h, and scripts/pnglibconf.h.prebuilt
+ */
+
+/* The last ordinal number (this is the *last* one already used; the next
+ * one to use is one more than this.) Maintainer, remember to add an entry to
+ * scripts/symbols.def as well.
+ */
+#ifdef PNG_EXPORT_LAST_ORDINAL
+ PNG_EXPORT_LAST_ORDINAL(244);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PNG_VERSION_INFO_ONLY */
+/* Do not put anything past this line */
+#endif /* PNG_H */
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/pngconf.h b/core/src/fxcodec/fx_lpng/lpng_v163/pngconf.h
new file mode 100644
index 0000000..02f74e2
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/pngconf.h
@@ -0,0 +1,617 @@
+
+/* pngconf.h - machine configurable file for libpng
+ *
+ * libpng version 1.6.3 - July 18, 2013
+ *
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ */
+
+/* Any machine specific code is near the front of this file, so if you
+ * are configuring libpng for a machine, you may want to read the section
+ * starting here down to where it starts to typedef png_color, png_text,
+ * and png_info.
+ */
+
+#ifndef PNGCONF_H
+#define PNGCONF_H
+
+/* To do: Do all of this in scripts/pnglibconf.dfa */
+#ifdef PNG_SAFE_LIMITS_SUPPORTED
+# ifdef PNG_USER_WIDTH_MAX
+# undef PNG_USER_WIDTH_MAX
+# define PNG_USER_WIDTH_MAX 1000000L
+# endif
+# ifdef PNG_USER_HEIGHT_MAX
+# undef PNG_USER_HEIGHT_MAX
+# define PNG_USER_HEIGHT_MAX 1000000L
+# endif
+# ifdef PNG_USER_CHUNK_MALLOC_MAX
+# undef PNG_USER_CHUNK_MALLOC_MAX
+# define PNG_USER_CHUNK_MALLOC_MAX 4000000L
+# endif
+# ifdef PNG_USER_CHUNK_CACHE_MAX
+# undef PNG_USER_CHUNK_CACHE_MAX
+# define PNG_USER_CHUNK_CACHE_MAX 128
+# endif
+#endif
+
+#ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */
+
+/* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C
+ * compiler for correct compilation. The following header files are required by
+ * the standard. If your compiler doesn't provide these header files, or they
+ * do not match the standard, you will need to provide/improve them.
+ */
+#include <limits.h>
+#include <stddef.h>
+
+/* Library header files. These header files are all defined by ISOC90; libpng
+ * expects conformant implementations, however, an ISOC90 conformant system need
+ * not provide these header files if the functionality cannot be implemented.
+ * In this case it will be necessary to disable the relevant parts of libpng in
+ * the build of pnglibconf.h.
+ *
+ * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not
+ * include this unnecessary header file.
+ */
+
+#ifdef PNG_STDIO_SUPPORTED
+ /* Required for the definition of FILE: */
+# include <stdio.h>
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+ /* Required for the definition of jmp_buf and the declaration of longjmp: */
+# include <setjmp.h>
+#endif
+
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+ /* Required for struct tm: */
+# include <time.h>
+#endif
+
+#endif /* PNG_BUILDING_SYMBOL_TABLE */
+
+/* Prior to 1.6.0 it was possible to turn off 'const' in declarations using
+ * PNG_NO_CONST; this is no longer supported except for data declarations which
+ * apparently still cause problems in 2011 on some compilers.
+ */
+#define PNG_CONST const /* backward compatibility only */
+
+/* This controls optimization of the reading of 16 and 32 bit values
+ * from PNG files. It can be set on a per-app-file basis - it
+ * just changes whether a macro is used when the function is called.
+ * The library builder sets the default; if read functions are not
+ * built into the library the macro implementation is forced on.
+ */
+#ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
+# define PNG_USE_READ_MACROS
+#endif
+#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
+# if PNG_DEFAULT_READ_MACROS
+# define PNG_USE_READ_MACROS
+# endif
+#endif
+
+/* COMPILER SPECIFIC OPTIONS.
+ *
+ * These options are provided so that a variety of difficult compilers
+ * can be used. Some are fixed at build time (e.g. PNG_API_RULE
+ * below) but still have compiler specific implementations, others
+ * may be changed on a per-file basis when compiling against libpng.
+ */
+
+/* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect
+ * against legacy (pre ISOC90) compilers that did not understand function
+ * prototypes. It is not required for modern C compilers.
+ */
+#ifndef PNGARG
+# define PNGARG(arglist) arglist
+#endif
+
+/* Function calling conventions.
+ * =============================
+ * Normally it is not necessary to specify to the compiler how to call
+ * a function - it just does it - however on x86 systems derived from
+ * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
+ * and some others) there are multiple ways to call a function and the
+ * default can be changed on the compiler command line. For this reason
+ * libpng specifies the calling convention of every exported function and
+ * every function called via a user supplied function pointer. This is
+ * done in this file by defining the following macros:
+ *
+ * PNGAPI Calling convention for exported functions.
+ * PNGCBAPI Calling convention for user provided (callback) functions.
+ * PNGCAPI Calling convention used by the ANSI-C library (required
+ * for longjmp callbacks and sometimes used internally to
+ * specify the calling convention for zlib).
+ *
+ * These macros should never be overridden. If it is necessary to
+ * change calling convention in a private build this can be done
+ * by setting PNG_API_RULE (which defaults to 0) to one of the values
+ * below to select the correct 'API' variants.
+ *
+ * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout.
+ * This is correct in every known environment.
+ * PNG_API_RULE=1 Use the operating system convention for PNGAPI and
+ * the 'C' calling convention (from PNGCAPI) for
+ * callbacks (PNGCBAPI). This is no longer required
+ * in any known environment - if it has to be used
+ * please post an explanation of the problem to the
+ * libpng mailing list.
+ *
+ * These cases only differ if the operating system does not use the C
+ * calling convention, at present this just means the above cases
+ * (x86 DOS/Windows sytems) and, even then, this does not apply to
+ * Cygwin running on those systems.
+ *
+ * Note that the value must be defined in pnglibconf.h so that what
+ * the application uses to call the library matches the conventions
+ * set when building the library.
+ */
+
+/* Symbol export
+ * =============
+ * When building a shared library it is almost always necessary to tell
+ * the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
+ * is used to mark the symbols. On some systems these symbols can be
+ * extracted at link time and need no special processing by the compiler,
+ * on other systems the symbols are flagged by the compiler and just
+ * the declaration requires a special tag applied (unfortunately) in a
+ * compiler dependent way. Some systems can do either.
+ *
+ * A small number of older systems also require a symbol from a DLL to
+ * be flagged to the program that calls it. This is a problem because
+ * we do not know in the header file included by application code that
+ * the symbol will come from a shared library, as opposed to a statically
+ * linked one. For this reason the application must tell us by setting
+ * the magic flag PNG_USE_DLL to turn on the special processing before
+ * it includes png.h.
+ *
+ * Four additional macros are used to make this happen:
+ *
+ * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
+ * the build or imported if PNG_USE_DLL is set - compiler
+ * and system specific.
+ *
+ * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
+ * 'type', compiler specific.
+ *
+ * PNG_DLL_EXPORT Set to the magic to use during a libpng build to
+ * make a symbol exported from the DLL. Not used in the
+ * public header files; see pngpriv.h for how it is used
+ * in the libpng build.
+ *
+ * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
+ * from a DLL - used to define PNG_IMPEXP when
+ * PNG_USE_DLL is set.
+ */
+
+/* System specific discovery.
+ * ==========================
+ * This code is used at build time to find PNG_IMPEXP, the API settings
+ * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
+ * import processing is possible. On Windows systems it also sets
+ * compiler-specific macros to the values required to change the calling
+ * conventions of the various functions.
+ */
+#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
+ defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+ /* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or
+ * MinGW on any architecture currently supported by Windows. Also includes
+ * Watcom builds but these need special treatment because they are not
+ * compatible with GCC or Visual C because of different calling conventions.
+ */
+# if PNG_API_RULE == 2
+ /* If this line results in an error, either because __watcall is not
+ * understood or because of a redefine just below you cannot use *this*
+ * build of the library with the compiler you are using. *This* build was
+ * build using Watcom and applications must also be built using Watcom!
+ */
+# define PNGCAPI __watcall
+# endif
+
+# if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800))
+# define PNGCAPI __cdecl
+# if PNG_API_RULE == 1
+ /* If this line results in an error __stdcall is not understood and
+ * PNG_API_RULE should not have been set to '1'.
+ */
+# define PNGAPI __stdcall
+# endif
+# else
+ /* An older compiler, or one not detected (erroneously) above,
+ * if necessary override on the command line to get the correct
+ * variants for the compiler.
+ */
+# ifndef PNGCAPI
+# define PNGCAPI _cdecl
+# endif
+# if PNG_API_RULE == 1 && !defined(PNGAPI)
+# define PNGAPI _stdcall
+# endif
+# endif /* compiler/api */
+
+ /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
+
+# if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
+# error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed"
+# endif
+
+# if (defined(_MSC_VER) && _MSC_VER < 800) ||\
+ (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
+ /* older Borland and MSC
+ * compilers used '__export' and required this to be after
+ * the type.
+ */
+# ifndef PNG_EXPORT_TYPE
+# define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
+# endif
+# define PNG_DLL_EXPORT __export
+# else /* newer compiler */
+# define PNG_DLL_EXPORT __declspec(dllexport)
+# ifndef PNG_DLL_IMPORT
+# define PNG_DLL_IMPORT __declspec(dllimport)
+# endif
+# endif /* compiler */
+
+#else /* !Windows */
+# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
+# define PNGAPI _System
+# else /* !Windows/x86 && !OS/2 */
+ /* Use the defaults, or define PNG*API on the command line (but
+ * this will have to be done for every compile!)
+ */
+# endif /* other system, !OS/2 */
+#endif /* !Windows/x86 */
+
+/* Now do all the defaulting . */
+#ifndef PNGCAPI
+# define PNGCAPI
+#endif
+#ifndef PNGCBAPI
+# define PNGCBAPI PNGCAPI
+#endif
+#ifndef PNGAPI
+# define PNGAPI PNGCAPI
+#endif
+
+/* PNG_IMPEXP may be set on the compilation system command line or (if not set)
+ * then in an internal header file when building the library, otherwise (when
+ * using the library) it is set here.
+ */
+#ifndef PNG_IMPEXP
+# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
+ /* This forces use of a DLL, disallowing static linking */
+# define PNG_IMPEXP PNG_DLL_IMPORT
+# endif
+
+# ifndef PNG_IMPEXP
+# define PNG_IMPEXP
+# endif
+#endif
+
+/* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat
+ * 'attributes' as a storage class - the attributes go at the start of the
+ * function definition, and attributes are always appended regardless of the
+ * compiler. This considerably simplifies these macros but may cause problems
+ * if any compilers both need function attributes and fail to handle them as
+ * a storage class (this is unlikely.)
+ */
+#ifndef PNG_FUNCTION
+# define PNG_FUNCTION(type, name, args, attributes) attributes type name args
+#endif
+
+#ifndef PNG_EXPORT_TYPE
+# define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
+#endif
+
+ /* The ordinal value is only relevant when preprocessing png.h for symbol
+ * table entries, so we discard it here. See the .dfn files in the
+ * scripts directory.
+ */
+#ifndef PNG_EXPORTA
+
+# define PNG_EXPORTA(ordinal, type, name, args, attributes)\
+ PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \
+ extern attributes)
+#endif
+
+/* ANSI-C (C90) does not permit a macro to be invoked with an empty argument,
+ * so make something non-empty to satisfy the requirement:
+ */
+#define PNG_EMPTY /*empty list*/
+
+#define PNG_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
+
+/* Use PNG_REMOVED to comment out a removed interface. */
+#ifndef PNG_REMOVED
+# define PNG_REMOVED(ordinal, type, name, args, attributes)
+#endif
+
+#ifndef PNG_CALLBACK
+# define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args)
+#endif
+
+/* Support for compiler specific function attributes. These are used
+ * so that where compiler support is available incorrect use of API
+ * functions in png.h will generate compiler warnings.
+ *
+ * Added at libpng-1.2.41.
+ */
+
+#ifndef PNG_NO_PEDANTIC_WARNINGS
+# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
+# define PNG_PEDANTIC_WARNINGS_SUPPORTED
+# endif
+#endif
+
+#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
+ /* Support for compiler specific function attributes. These are used
+ * so that where compiler support is available, incorrect use of API
+ * functions in png.h will generate compiler warnings. Added at libpng
+ * version 1.2.41. Disabling these removes the warnings but may also produce
+ * less efficient code.
+ */
+# if defined(__GNUC__)
+# ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
+# endif
+# ifndef PNG_NORETURN
+# define PNG_NORETURN __attribute__((__noreturn__))
+# endif
+# if __GNUC__ >= 3
+# ifndef PNG_ALLOCATED
+# define PNG_ALLOCATED __attribute__((__malloc__))
+# endif
+# ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED __attribute__((__deprecated__))
+# endif
+# ifndef PNG_PRIVATE
+# if 0 /* Doesn't work so we use deprecated instead*/
+# define PNG_PRIVATE \
+ __attribute__((warning("This function is not exported by libpng.")))
+# else
+# define PNG_PRIVATE \
+ __attribute__((__deprecated__))
+# endif
+# endif
+# if ((__GNUC__ != 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1))
+# ifndef PNG_RESTRICT
+# define PNG_RESTRICT __restrict
+# endif
+# endif /* __GNUC__ == 3.0 */
+# endif /* __GNUC__ >= 3 */
+
+# elif defined(_MSC_VER) && (_MSC_VER >= 1300)
+# ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT /* not supported */
+# endif
+# ifndef PNG_NORETURN
+# define PNG_NORETURN __declspec(noreturn)
+# endif
+# ifndef PNG_ALLOCATED
+# if (_MSC_VER >= 1400)
+# define PNG_ALLOCATED __declspec(restrict)
+# endif
+# endif
+# ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED __declspec(deprecated)
+# endif
+# ifndef PNG_PRIVATE
+# define PNG_PRIVATE __declspec(deprecated)
+# endif
+# ifndef PNG_RESTRICT
+# if (_MSC_VER >= 1400)
+# define PNG_RESTRICT __restrict
+# endif
+# endif
+
+# elif defined(__WATCOMC__)
+# ifndef PNG_RESTRICT
+# define PNG_RESTRICT __restrict
+# endif
+# endif /* _MSC_VER */
+#endif /* PNG_PEDANTIC_WARNINGS */
+
+#ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED /* Use of this function is deprecated */
+#endif
+#ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT /* The result of this function must be checked */
+#endif
+#ifndef PNG_NORETURN
+# define PNG_NORETURN /* This function does not return */
+#endif
+#ifndef PNG_ALLOCATED
+# define PNG_ALLOCATED /* The result of the function is new memory */
+#endif
+#ifndef PNG_PRIVATE
+# define PNG_PRIVATE /* This is a private libpng function */
+#endif
+#ifndef PNG_RESTRICT
+# define PNG_RESTRICT /* The C99 "restrict" feature */
+#endif
+#ifndef PNG_FP_EXPORT /* A floating point API. */
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+# define PNG_FP_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORT(ordinal, type, name, args);
+# else /* No floating point APIs */
+# define PNG_FP_EXPORT(ordinal, type, name, args)
+# endif
+#endif
+#ifndef PNG_FIXED_EXPORT /* A fixed point API. */
+# ifdef PNG_FIXED_POINT_SUPPORTED
+# define PNG_FIXED_EXPORT(ordinal, type, name, args)\
+ PNG_EXPORT(ordinal, type, name, args);
+# else /* No fixed point APIs */
+# define PNG_FIXED_EXPORT(ordinal, type, name, args)
+# endif
+#endif
+
+#ifndef PNG_BUILDING_SYMBOL_TABLE
+/* Some typedefs to get us started. These should be safe on most of the common
+ * platforms.
+ *
+ * png_uint_32 and png_int_32 may, currently, be larger than required to hold a
+ * 32-bit value however this is not normally advisable.
+ *
+ * png_uint_16 and png_int_16 should always be two bytes in size - this is
+ * verified at library build time.
+ *
+ * png_byte must always be one byte in size.
+ *
+ * The checks below use constants from limits.h, as defined by the ISOC90
+ * standard.
+ */
+#if CHAR_BIT == 8 && UCHAR_MAX == 255
+ typedef unsigned char png_byte;
+#else
+# error "libpng requires 8 bit bytes"
+#endif
+
+#if INT_MIN == -32768 && INT_MAX == 32767
+ typedef int png_int_16;
+#elif SHRT_MIN == -32768 && SHRT_MAX == 32767
+ typedef short png_int_16;
+#else
+# error "libpng requires a signed 16 bit type"
+#endif
+
+#if UINT_MAX == 65535
+ typedef unsigned int png_uint_16;
+#elif USHRT_MAX == 65535
+ typedef unsigned short png_uint_16;
+#else
+# error "libpng requires an unsigned 16 bit type"
+#endif
+
+#if INT_MIN < -2147483646 && INT_MAX > 2147483646
+ typedef int png_int_32;
+#elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
+ typedef long int png_int_32;
+#else
+# error "libpng requires a signed 32 bit (or more) type"
+#endif
+
+#if UINT_MAX > 4294967294
+ typedef unsigned int png_uint_32;
+#elif ULONG_MAX > 4294967294
+ typedef unsigned long int png_uint_32;
+#else
+# error "libpng requires an unsigned 32 bit (or more) type"
+#endif
+
+/* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however,
+ * requires an ISOC90 compiler and relies on consistent behavior of sizeof.
+ */
+typedef size_t png_size_t;
+typedef ptrdiff_t png_ptrdiff_t;
+
+/* libpng needs to know the maximum value of 'size_t' and this controls the
+ * definition of png_alloc_size_t, below. This maximum value of size_t limits
+ * but does not control the maximum allocations the library makes - there is
+ * direct application control of this through png_set_user_limits().
+ */
+#ifndef PNG_SMALL_SIZE_T
+ /* Compiler specific tests for systems where size_t is known to be less than
+ * 32 bits (some of these systems may no longer work because of the lack of
+ * 'far' support; see above.)
+ */
+# if (defined(__TURBOC__) && !defined(__FLAT__)) ||\
+ (defined(_MSC_VER) && defined(MAXSEG_64K))
+# define PNG_SMALL_SIZE_T
+# endif
+#endif
+
+/* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no
+ * smaller than png_uint_32. Casts from png_size_t or png_uint_32 to
+ * png_alloc_size_t are not necessary; in fact, it is recommended not to use
+ * them at all so that the compiler can complain when something turns out to be
+ * problematic.
+ *
+ * Casts in the other direction (from png_alloc_size_t to png_size_t or
+ * png_uint_32) should be explicitly applied; however, we do not expect to
+ * encounter practical situations that require such conversions.
+ *
+ * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than
+ * 4294967295 - i.e. less than the maximum value of png_uint_32.
+ */
+#ifdef PNG_SMALL_SIZE_T
+ typedef png_uint_32 png_alloc_size_t;
+#else
+ typedef png_size_t png_alloc_size_t;
+#endif
+
+/* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler
+ * implementations of Intel CPU specific support of user-mode segmented address
+ * spaces, where 16-bit pointers address more than 65536 bytes of memory using
+ * separate 'segment' registers. The implementation requires two different
+ * types of pointer (only one of which includes the segment value.)
+ *
+ * If required this support is available in version 1.2 of libpng and may be
+ * available in versions through 1.5, although the correctness of the code has
+ * not been verified recently.
+ */
+
+/* Typedef for floating-point numbers that are converted to fixed-point with a
+ * multiple of 100,000, e.g., gamma
+ */
+typedef png_int_32 png_fixed_point;
+
+/* Add typedefs for pointers */
+typedef void * png_voidp;
+typedef const void * png_const_voidp;
+typedef png_byte * png_bytep;
+typedef const png_byte * png_const_bytep;
+typedef png_uint_32 * png_uint_32p;
+typedef const png_uint_32 * png_const_uint_32p;
+typedef png_int_32 * png_int_32p;
+typedef const png_int_32 * png_const_int_32p;
+typedef png_uint_16 * png_uint_16p;
+typedef const png_uint_16 * png_const_uint_16p;
+typedef png_int_16 * png_int_16p;
+typedef const png_int_16 * png_const_int_16p;
+typedef char * png_charp;
+typedef const char * png_const_charp;
+typedef png_fixed_point * png_fixed_point_p;
+typedef const png_fixed_point * png_const_fixed_point_p;
+typedef png_size_t * png_size_tp;
+typedef const png_size_t * png_const_size_tp;
+
+#ifdef PNG_STDIO_SUPPORTED
+typedef FILE * png_FILE_p;
+#endif
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+typedef double * png_doublep;
+typedef const double * png_const_doublep;
+#endif
+
+/* Pointers to pointers; i.e. arrays */
+typedef png_byte * * png_bytepp;
+typedef png_uint_32 * * png_uint_32pp;
+typedef png_int_32 * * png_int_32pp;
+typedef png_uint_16 * * png_uint_16pp;
+typedef png_int_16 * * png_int_16pp;
+typedef const char * * png_const_charpp;
+typedef char * * png_charpp;
+typedef png_fixed_point * * png_fixed_point_pp;
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+typedef double * * png_doublepp;
+#endif
+
+/* Pointers to pointers to pointers; i.e., pointer to array */
+typedef char * * * png_charppp;
+
+#endif /* PNG_BUILDING_SYMBOL_TABLE */
+
+#endif /* PNGCONF_H */
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/pngdebug.h b/core/src/fxcodec/fx_lpng/lpng_v163/pngdebug.h
new file mode 100644
index 0000000..96c1ea4
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/pngdebug.h
@@ -0,0 +1,157 @@
+
+/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
+ *
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * Last changed in libpng 1.5.0 [January 6, 2011]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* Define PNG_DEBUG at compile time for debugging information. Higher
+ * numbers for PNG_DEBUG mean more debugging information. This has
+ * only been added since version 0.95 so it is not implemented throughout
+ * libpng yet, but more support will be added as needed.
+ *
+ * png_debug[1-2]?(level, message ,arg{0-2})
+ * Expands to a statement (either a simple expression or a compound
+ * do..while(0) statement) that outputs a message with parameter
+ * substitution if PNG_DEBUG is defined to 2 or more. If PNG_DEBUG
+ * is undefined, 0 or 1 every png_debug expands to a simple expression
+ * (actually ((void)0)).
+ *
+ * level: level of detail of message, starting at 0. A level 'n'
+ * message is preceded by 'n' tab characters (not implemented
+ * on Microsoft compilers unless PNG_DEBUG_FILE is also
+ * defined, to allow debug DLL compilation with no standard IO).
+ * message: a printf(3) style text string. A trailing '\n' is added
+ * to the message.
+ * arg: 0 to 2 arguments for printf(3) style substitution in message.
+ */
+#ifndef PNGDEBUG_H
+#define PNGDEBUG_H
+/* These settings control the formatting of messages in png.c and pngerror.c */
+/* Moved to pngdebug.h at 1.5.0 */
+# ifndef PNG_LITERAL_SHARP
+# define PNG_LITERAL_SHARP 0x23
+# endif
+# ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
+# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
+# endif
+# ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
+# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
+# endif
+# ifndef PNG_STRING_NEWLINE
+# define PNG_STRING_NEWLINE "\n"
+# endif
+
+#ifdef PNG_DEBUG
+# if (PNG_DEBUG > 0)
+# if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
+# include <crtdbg.h>
+# if (PNG_DEBUG > 1)
+# ifndef _DEBUG
+# define _DEBUG
+# endif
+# ifndef png_debug
+# define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
+# endif
+# ifndef png_debug1
+# define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
+# endif
+# ifndef png_debug2
+# define png_debug2(l,m,p1,p2) \
+ _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
+# endif
+# endif
+# else /* PNG_DEBUG_FILE || !_MSC_VER */
+# ifndef PNG_STDIO_SUPPORTED
+# include <stdio.h> /* not included yet */
+# endif
+# ifndef PNG_DEBUG_FILE
+# define PNG_DEBUG_FILE stderr
+# endif /* PNG_DEBUG_FILE */
+
+# if (PNG_DEBUG > 1)
+/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
+ * non-ISO compilers
+ */
+# ifdef __STDC__
+# ifndef png_debug
+# define png_debug(l,m) \
+ do { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
+ } while (0)
+# endif
+# ifndef png_debug1
+# define png_debug1(l,m,p1) \
+ do { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
+ } while (0)
+# endif
+# ifndef png_debug2
+# define png_debug2(l,m,p1,p2) \
+ do { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
+ } while (0)
+# endif
+# else /* __STDC __ */
+# ifndef png_debug
+# define png_debug(l,m) \
+ do { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format); \
+ } while (0)
+# endif
+# ifndef png_debug1
+# define png_debug1(l,m,p1) \
+ do { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format,p1); \
+ } while (0)
+# endif
+# ifndef png_debug2
+# define png_debug2(l,m,p1,p2) \
+ do { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format,p1,p2); \
+ } while (0)
+# endif
+# endif /* __STDC __ */
+# endif /* (PNG_DEBUG > 1) */
+
+# endif /* _MSC_VER */
+# endif /* (PNG_DEBUG > 0) */
+#endif /* PNG_DEBUG */
+#ifndef png_debug
+# define png_debug(l, m) ((void)0)
+#endif
+#ifndef png_debug1
+# define png_debug1(l, m, p1) ((void)0)
+#endif
+#ifndef png_debug2
+# define png_debug2(l, m, p1, p2) ((void)0)
+#endif
+#endif /* PNGDEBUG_H */
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/pnginfo.h b/core/src/fxcodec/fx_lpng/lpng_v163/pnginfo.h
new file mode 100644
index 0000000..683b7ea
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/pnginfo.h
@@ -0,0 +1,260 @@
+
+/* pnginfo.h - header file for PNG reference library
+ *
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * Last changed in libpng 1.6.1 [March 28, 2013]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+ /* png_info is a structure that holds the information in a PNG file so
+ * that the application can find out the characteristics of the image.
+ * If you are reading the file, this structure will tell you what is
+ * in the PNG file. If you are writing the file, fill in the information
+ * you want to put into the PNG file, using png_set_*() functions, then
+ * call png_write_info().
+ *
+ * The names chosen should be very close to the PNG specification, so
+ * consult that document for information about the meaning of each field.
+ *
+ * With libpng < 0.95, it was only possible to directly set and read the
+ * the values in the png_info_struct, which meant that the contents and
+ * order of the values had to remain fixed. With libpng 0.95 and later,
+ * however, there are now functions that abstract the contents of
+ * png_info_struct from the application, so this makes it easier to use
+ * libpng with dynamic libraries, and even makes it possible to use
+ * libraries that don't have all of the libpng ancillary chunk-handing
+ * functionality. In libpng-1.5.0 this was moved into a separate private
+ * file that is not visible to applications.
+ *
+ * The following members may have allocated storage attached that should be
+ * cleaned up before the structure is discarded: palette, trans, text,
+ * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
+ * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these
+ * are automatically freed when the info structure is deallocated, if they were
+ * allocated internally by libpng. This behavior can be changed by means
+ * of the png_data_freer() function.
+ *
+ * More allocation details: all the chunk-reading functions that
+ * change these members go through the corresponding png_set_*
+ * functions. A function to clear these members is available: see
+ * png_free_data(). The png_set_* functions do not depend on being
+ * able to point info structure members to any of the storage they are
+ * passed (they make their own copies), EXCEPT that the png_set_text
+ * functions use the same storage passed to them in the text_ptr or
+ * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
+ * functions do not make their own copies.
+ */
+#ifndef PNGINFO_H
+#define PNGINFO_H
+
+struct png_info_def
+{
+ /* The following are necessary for every PNG file */
+ png_uint_32 width; /* width of image in pixels (from IHDR) */
+ png_uint_32 height; /* height of image in pixels (from IHDR) */
+ png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
+ png_size_t rowbytes; /* bytes needed to hold an untransformed row */
+ png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */
+ png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
+ png_uint_16 num_trans; /* number of transparent palette color (tRNS) */
+ png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
+ png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */
+ /* The following three should have been named *_method not *_type */
+ png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
+ png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
+ png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+
+ /* The following are set by png_set_IHDR, called from the application on
+ * write, but the are never actually used by the write code.
+ */
+ png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */
+ png_byte pixel_depth; /* number of bits per pixel */
+ png_byte spare_byte; /* to align the data, and for future use */
+
+#ifdef PNG_READ_SUPPORTED
+ /* This is never set during write */
+ png_byte signature[8]; /* magic bytes read by libpng from start of file */
+#endif
+
+ /* The rest of the data is optional. If you are reading, check the
+ * valid field to see if the information in these are valid. If you
+ * are writing, set the valid field to those chunks you want written,
+ * and initialize the appropriate fields below.
+ */
+
+#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
+ /* png_colorspace only contains 'flags' if neither GAMMA or COLORSPACE are
+ * defined. When COLORSPACE is switched on all the colorspace-defining
+ * chunks should be enabled, when GAMMA is switched on all the gamma-defining
+ * chunks should be enabled. If this is not done it becomes possible to read
+ * inconsistent PNG files and assign a probably incorrect interpretation to
+ * the information. (In other words, by carefully choosing which chunks to
+ * recognize the system configuration can select an interpretation for PNG
+ * files containing ambiguous data and this will result in inconsistent
+ * behavior between different libpng builds!)
+ */
+ png_colorspace colorspace;
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+ /* iCCP chunk data. */
+ png_charp iccp_name; /* profile name */
+ png_bytep iccp_profile; /* International Color Consortium profile data */
+ png_uint_32 iccp_proflen; /* ICC profile data length */
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+ /* The tEXt, and zTXt chunks contain human-readable textual data in
+ * uncompressed, compressed, and optionally compressed forms, respectively.
+ * The data in "text" is an array of pointers to uncompressed,
+ * null-terminated C strings. Each chunk has a keyword that describes the
+ * textual data contained in that chunk. Keywords are not required to be
+ * unique, and the text string may be empty. Any number of text chunks may
+ * be in an image.
+ */
+ int num_text; /* number of comments read or comments to write */
+ int max_text; /* current size of text array */
+ png_textp text; /* array of comments read or comments to write */
+#endif /* PNG_TEXT_SUPPORTED */
+
+#ifdef PNG_tIME_SUPPORTED
+ /* The tIME chunk holds the last time the displayed image data was
+ * modified. See the png_time struct for the contents of this struct.
+ */
+ png_time mod_time;
+#endif
+
+#ifdef PNG_sBIT_SUPPORTED
+ /* The sBIT chunk specifies the number of significant high-order bits
+ * in the pixel data. Values are in the range [1, bit_depth], and are
+ * only specified for the channels in the pixel data. The contents of
+ * the low-order bits is not specified. Data is valid if
+ * (valid & PNG_INFO_sBIT) is non-zero.
+ */
+ png_color_8 sig_bit; /* significant bits in color channels */
+#endif
+
+#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
+defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* The tRNS chunk supplies transparency data for paletted images and
+ * other image types that don't need a full alpha channel. There are
+ * "num_trans" transparency values for a paletted image, stored in the
+ * same order as the palette colors, starting from index 0. Values
+ * for the data are in the range [0, 255], ranging from fully transparent
+ * to fully opaque, respectively. For non-paletted images, there is a
+ * single color specified that should be treated as fully transparent.
+ * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
+ */
+ png_bytep trans_alpha; /* alpha values for paletted image */
+ png_color_16 trans_color; /* transparent color for non-palette image */
+#endif
+
+#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* The bKGD chunk gives the suggested image background color if the
+ * display program does not have its own background color and the image
+ * is needs to composited onto a background before display. The colors
+ * in "background" are normally in the same color space/depth as the
+ * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
+ */
+ png_color_16 background;
+#endif
+
+#ifdef PNG_oFFs_SUPPORTED
+ /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
+ * and downwards from the top-left corner of the display, page, or other
+ * application-specific co-ordinate space. See the PNG_OFFSET_ defines
+ * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
+ */
+ png_int_32 x_offset; /* x offset on page */
+ png_int_32 y_offset; /* y offset on page */
+ png_byte offset_unit_type; /* offset units type */
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+ /* The pHYs chunk gives the physical pixel density of the image for
+ * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
+ * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
+ */
+ png_uint_32 x_pixels_per_unit; /* horizontal pixel density */
+ png_uint_32 y_pixels_per_unit; /* vertical pixel density */
+ png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+ /* The hIST chunk contains the relative frequency or importance of the
+ * various palette entries, so that a viewer can intelligently select a
+ * reduced-color palette, if required. Data is an array of "num_palette"
+ * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
+ * is non-zero.
+ */
+ png_uint_16p hist;
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+ /* The pCAL chunk describes a transformation between the stored pixel
+ * values and original physical data values used to create the image.
+ * The integer range [0, 2^bit_depth - 1] maps to the floating-point
+ * range given by [pcal_X0, pcal_X1], and are further transformed by a
+ * (possibly non-linear) transformation function given by "pcal_type"
+ * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_
+ * defines below, and the PNG-Group's PNG extensions document for a
+ * complete description of the transformations and how they should be
+ * implemented, and for a description of the ASCII parameter strings.
+ * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
+ */
+ png_charp pcal_purpose; /* pCAL chunk description string */
+ png_int_32 pcal_X0; /* minimum value */
+ png_int_32 pcal_X1; /* maximum value */
+ png_charp pcal_units; /* Latin-1 string giving physical units */
+ png_charpp pcal_params; /* ASCII strings containing parameter values */
+ png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */
+ png_byte pcal_nparams; /* number of parameters given in pcal_params */
+#endif
+
+/* New members added in libpng-1.0.6 */
+ png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+
+#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+ /* Storage for unknown chunks that the library doesn't recognize. */
+ png_unknown_chunkp unknown_chunks;
+
+ /* The type of this field is limited by the type of
+ * png_struct::user_chunk_cache_max, else overflow can occur.
+ */
+ int unknown_chunks_num;
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+ /* Data on sPLT chunks (there may be more than one). */
+ png_sPLT_tp splt_palettes;
+ int splt_palettes_num; /* Match type returned by png_get API */
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+ /* The sCAL chunk describes the actual physical dimensions of the
+ * subject matter of the graphic. The chunk contains a unit specification
+ * a byte value, and two ASCII strings representing floating-point
+ * values. The values are width and height corresponsing to one pixel
+ * in the image. Data values are valid if (valid & PNG_INFO_sCAL) is
+ * non-zero.
+ */
+ png_byte scal_unit; /* unit of physical scale */
+ png_charp scal_s_width; /* string containing height */
+ png_charp scal_s_height; /* string containing width */
+#endif
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+ /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
+ non-zero */
+ /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
+ png_bytepp row_pointers; /* the image bits */
+#endif
+
+};
+#endif /* PNGINFO_H */
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/pnglibconf.h b/core/src/fxcodec/fx_lpng/lpng_v163/pnglibconf.h
new file mode 100644
index 0000000..ececc38
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/pnglibconf.h
@@ -0,0 +1,211 @@
+/* libpng 1.6.3 STANDARD API DEFINITION */
+
+/* pnglibconf.h - library build configuration */
+
+/* Libpng version 1.6.3 - July 18, 2013 */
+
+/* Copyright (c) 1998-2013 Glenn Randers-Pehrson */
+
+/* This code is released under the libpng license. */
+/* For conditions of distribution and use, see the disclaimer */
+/* and license in png.h */
+
+/* pnglibconf.h */
+/* Machine generated file: DO NOT EDIT */
+/* Derived from: scripts/pnglibconf.dfa */
+#ifndef PNGLCONF_H
+#define PNGLCONF_H
+/* options */
+#define PNG_16BIT_SUPPORTED
+#define PNG_ALIGNED_MEMORY_SUPPORTED
+/*#undef PNG_ARM_NEON_API_SUPPORTED*/
+/*#undef PNG_ARM_NEON_CHECK_SUPPORTED*/
+#define PNG_BENIGN_ERRORS_SUPPORTED
+#define PNG_BENIGN_READ_ERRORS_SUPPORTED
+/*#undef PNG_BENIGN_WRITE_ERRORS_SUPPORTED*/
+#define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
+#define PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+#define PNG_COLORSPACE_SUPPORTED
+#define PNG_CONSOLE_IO_SUPPORTED
+#define PNG_CONVERT_tIME_SUPPORTED
+#define PNG_EASY_ACCESS_SUPPORTED
+/*#undef PNG_ERROR_NUMBERS_SUPPORTED*/
+#define PNG_ERROR_TEXT_SUPPORTED
+#define PNG_FIXED_POINT_SUPPORTED
+#define PNG_FLOATING_ARITHMETIC_SUPPORTED
+#define PNG_FLOATING_POINT_SUPPORTED
+#define PNG_FORMAT_AFIRST_SUPPORTED
+#define PNG_FORMAT_BGR_SUPPORTED
+#define PNG_GAMMA_SUPPORTED
+#define PNG_GET_PALETTE_MAX_SUPPORTED
+#define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#define PNG_INCH_CONVERSIONS_SUPPORTED
+#define PNG_INFO_IMAGE_SUPPORTED
+#define PNG_IO_STATE_SUPPORTED
+#define PNG_MNG_FEATURES_SUPPORTED
+#define PNG_POINTER_INDEXING_SUPPORTED
+#define PNG_PROGRESSIVE_READ_SUPPORTED
+#define PNG_READ_16BIT_SUPPORTED
+#define PNG_READ_ALPHA_MODE_SUPPORTED
+#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
+#define PNG_READ_BACKGROUND_SUPPORTED
+#define PNG_READ_BGR_SUPPORTED
+#define PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+#define PNG_READ_COMPOSITE_NODIV_SUPPORTED
+#define PNG_READ_COMPRESSED_TEXT_SUPPORTED
+#define PNG_READ_EXPAND_16_SUPPORTED
+#define PNG_READ_EXPAND_SUPPORTED
+#define PNG_READ_FILLER_SUPPORTED
+#define PNG_READ_GAMMA_SUPPORTED
+#define PNG_READ_GET_PALETTE_MAX_SUPPORTED
+#define PNG_READ_GRAY_TO_RGB_SUPPORTED
+#define PNG_READ_INTERLACING_SUPPORTED
+#define PNG_READ_INT_FUNCTIONS_SUPPORTED
+#define PNG_READ_INVERT_ALPHA_SUPPORTED
+#define PNG_READ_INVERT_SUPPORTED
+#define PNG_READ_OPT_PLTE_SUPPORTED
+#define PNG_READ_PACKSWAP_SUPPORTED
+#define PNG_READ_PACK_SUPPORTED
+#define PNG_READ_QUANTIZE_SUPPORTED
+#define PNG_READ_RGB_TO_GRAY_SUPPORTED
+#define PNG_READ_SCALE_16_TO_8_SUPPORTED
+#define PNG_READ_SHIFT_SUPPORTED
+#define PNG_READ_STRIP_16_TO_8_SUPPORTED
+#define PNG_READ_STRIP_ALPHA_SUPPORTED
+#define PNG_READ_SUPPORTED
+#define PNG_READ_SWAP_ALPHA_SUPPORTED
+#define PNG_READ_SWAP_SUPPORTED
+#define PNG_READ_TEXT_SUPPORTED
+#define PNG_READ_TRANSFORMS_SUPPORTED
+#define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_READ_USER_CHUNKS_SUPPORTED
+#define PNG_READ_USER_TRANSFORM_SUPPORTED
+#define PNG_READ_bKGD_SUPPORTED
+#define PNG_READ_cHRM_SUPPORTED
+#define PNG_READ_gAMA_SUPPORTED
+#define PNG_READ_hIST_SUPPORTED
+#define PNG_READ_iCCP_SUPPORTED
+#define PNG_READ_iTXt_SUPPORTED
+#define PNG_READ_oFFs_SUPPORTED
+#define PNG_READ_pCAL_SUPPORTED
+#define PNG_READ_pHYs_SUPPORTED
+#define PNG_READ_sBIT_SUPPORTED
+#define PNG_READ_sCAL_SUPPORTED
+#define PNG_READ_sPLT_SUPPORTED
+#define PNG_READ_sRGB_SUPPORTED
+#define PNG_READ_tEXt_SUPPORTED
+#define PNG_READ_tIME_SUPPORTED
+#define PNG_READ_tRNS_SUPPORTED
+#define PNG_READ_zTXt_SUPPORTED
+/*#undef PNG_SAFE_LIMITS_SUPPORTED*/
+#define PNG_SAVE_INT_32_SUPPORTED
+#define PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_SEQUENTIAL_READ_SUPPORTED
+#define PNG_SETJMP_SUPPORTED
+#define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
+#define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+#define PNG_SET_OPTION_SUPPORTED
+#define PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_SET_USER_LIMITS_SUPPORTED
+#define PNG_SIMPLIFIED_READ_AFIRST_SUPPORTED
+#define PNG_SIMPLIFIED_READ_BGR_SUPPORTED
+#define PNG_SIMPLIFIED_READ_SUPPORTED
+#define PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED
+#define PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED
+#define PNG_SIMPLIFIED_WRITE_SUPPORTED
+#define PNG_STDIO_SUPPORTED
+#define PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_TEXT_SUPPORTED
+#define PNG_TIME_RFC1123_SUPPORTED
+#define PNG_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_USER_CHUNKS_SUPPORTED
+#define PNG_USER_LIMITS_SUPPORTED
+#define PNG_USER_MEM_SUPPORTED
+#define PNG_USER_TRANSFORM_INFO_SUPPORTED
+#define PNG_USER_TRANSFORM_PTR_SUPPORTED
+#define PNG_WARNINGS_SUPPORTED
+#define PNG_WRITE_16BIT_SUPPORTED
+#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
+#define PNG_WRITE_BGR_SUPPORTED
+#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
+#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+#define PNG_WRITE_FILLER_SUPPORTED
+#define PNG_WRITE_FILTER_SUPPORTED
+#define PNG_WRITE_FLUSH_SUPPORTED
+#define PNG_WRITE_GET_PALETTE_MAX_SUPPORTED
+#define PNG_WRITE_INTERLACING_SUPPORTED
+#define PNG_WRITE_INT_FUNCTIONS_SUPPORTED
+#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
+#define PNG_WRITE_INVERT_SUPPORTED
+#define PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
+#define PNG_WRITE_PACKSWAP_SUPPORTED
+#define PNG_WRITE_PACK_SUPPORTED
+#define PNG_WRITE_SHIFT_SUPPORTED
+#define PNG_WRITE_SUPPORTED
+#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
+#define PNG_WRITE_SWAP_SUPPORTED
+#define PNG_WRITE_TEXT_SUPPORTED
+#define PNG_WRITE_TRANSFORMS_SUPPORTED
+#define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
+#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+#define PNG_WRITE_bKGD_SUPPORTED
+#define PNG_WRITE_cHRM_SUPPORTED
+#define PNG_WRITE_gAMA_SUPPORTED
+#define PNG_WRITE_hIST_SUPPORTED
+#define PNG_WRITE_iCCP_SUPPORTED
+#define PNG_WRITE_iTXt_SUPPORTED
+#define PNG_WRITE_oFFs_SUPPORTED
+#define PNG_WRITE_pCAL_SUPPORTED
+#define PNG_WRITE_pHYs_SUPPORTED
+#define PNG_WRITE_sBIT_SUPPORTED
+#define PNG_WRITE_sCAL_SUPPORTED
+#define PNG_WRITE_sPLT_SUPPORTED
+#define PNG_WRITE_sRGB_SUPPORTED
+#define PNG_WRITE_tEXt_SUPPORTED
+#define PNG_WRITE_tIME_SUPPORTED
+#define PNG_WRITE_tRNS_SUPPORTED
+#define PNG_WRITE_zTXt_SUPPORTED
+#define PNG_bKGD_SUPPORTED
+#define PNG_cHRM_SUPPORTED
+#define PNG_gAMA_SUPPORTED
+#define PNG_hIST_SUPPORTED
+#define PNG_iCCP_SUPPORTED
+#define PNG_iTXt_SUPPORTED
+#define PNG_oFFs_SUPPORTED
+#define PNG_pCAL_SUPPORTED
+#define PNG_pHYs_SUPPORTED
+#define PNG_sBIT_SUPPORTED
+#define PNG_sCAL_SUPPORTED
+#define PNG_sPLT_SUPPORTED
+#define PNG_sRGB_SUPPORTED
+#define PNG_tEXt_SUPPORTED
+#define PNG_tIME_SUPPORTED
+#define PNG_tRNS_SUPPORTED
+#define PNG_zTXt_SUPPORTED
+/* end of options */
+/* settings */
+#define PNG_API_RULE 0
+#define PNG_CALLOC_SUPPORTED
+#define PNG_COST_SHIFT 3
+#define PNG_DEFAULT_READ_MACROS 1
+#define PNG_GAMMA_THRESHOLD_FIXED 5000
+#define PNG_IDAT_READ_SIZE PNG_ZBUF_SIZE
+#define PNG_INFLATE_BUF_SIZE 1024
+#define PNG_MAX_GAMMA_8 11
+#define PNG_QUANTIZE_BLUE_BITS 5
+#define PNG_QUANTIZE_GREEN_BITS 5
+#define PNG_QUANTIZE_RED_BITS 5
+#define PNG_TEXT_Z_DEFAULT_COMPRESSION (-1)
+#define PNG_TEXT_Z_DEFAULT_STRATEGY 0
+#define PNG_WEIGHT_SHIFT 8
+#define PNG_ZBUF_SIZE 8192
+#define PNG_ZLIB_VERNUM 0 /* unknown */
+#define PNG_Z_DEFAULT_COMPRESSION (-1)
+#define PNG_Z_DEFAULT_NOFILTER_STRATEGY 0
+#define PNG_Z_DEFAULT_STRATEGY 1
+#define PNG_sCAL_PRECISION 5
+#define PNG_sRGB_PROFILE_CHECKS 2
+/* end of settings */
+#endif /* PNGLCONF_H */
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/pngpriv.h b/core/src/fxcodec/fx_lpng/lpng_v163/pngpriv.h
new file mode 100644
index 0000000..7fa3d60
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/pngpriv.h
@@ -0,0 +1,2006 @@
+
+/* pngpriv.h - private declarations for use inside libpng
+ *
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * Last changed in libpng 1.6.3 [July 18, 2013]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* The symbols declared in this file (including the functions declared
+ * as extern) are PRIVATE. They are not part of the libpng public
+ * interface, and are not recommended for use by regular applications.
+ * Some of them may become public in the future; others may stay private,
+ * change in an incompatible way, or even disappear.
+ * Although the libpng users are not forbidden to include this header,
+ * they should be well aware of the issues that may arise from doing so.
+ */
+
+#ifndef PNGPRIV_H
+#define PNGPRIV_H
+
+/* Feature Test Macros. The following are defined here to ensure that correctly
+ * implemented libraries reveal the APIs libpng needs to build and hide those
+ * that are not needed and potentially damaging to the compilation.
+ *
+ * Feature Test Macros must be defined before any system header is included (see
+ * POSIX 1003.1 2.8.2 "POSIX Symbols."
+ *
+ * These macros only have an effect if the operating system supports either
+ * POSIX 1003.1 or C99, or both. On other operating systems (particularly
+ * Windows/Visual Studio) there is no effect; the OS specific tests below are
+ * still required (as of 2011-05-02.)
+ */
+#define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
+
+#ifndef PNG_VERSION_INFO_ONLY
+/* Standard library headers not required by png.h: */
+# include <stdlib.h>
+# include <string.h>
+#endif
+
+#define PNGLIB_BUILD /*libpng is being built, not used*/
+
+/* If HAVE_CONFIG_H is defined during the build then the build system must
+ * provide an appropriate "config.h" file on the include path. The header file
+ * must provide definitions as required below (search for "HAVE_CONFIG_H");
+ * see configure.ac for more details of the requirements. The macro
+ * "PNG_NO_CONFIG_H" is provided for maintainers to test for dependencies on
+ * 'configure'; define this macro to prevent the configure build including the
+ * configure generated config.h. Libpng is expected to compile without *any*
+ * special build system support on a reasonably ANSI-C compliant system.
+ */
+#if defined(HAVE_CONFIG_H) && !defined(PNG_NO_CONFIG_H)
+# include <config.h>
+
+ /* Pick up the definition of 'restrict' from config.h if it was read: */
+# define PNG_RESTRICT restrict
+#endif
+
+/* To support symbol prefixing it is necessary to know *before* including png.h
+ * whether the fixed point (and maybe other) APIs are exported, because if they
+ * are not internal definitions may be required. This is handled below just
+ * before png.h is included, but load the configuration now if it is available.
+ */
+#ifndef PNGLCONF_H
+# include "pnglibconf.h"
+#endif
+
+/* Local renames may change non-exported API functions from png.h */
+#if defined(PNG_PREFIX) && !defined(PNGPREFIX_H)
+# include "pngprefix.h"
+#endif
+
+#ifdef PNG_USER_CONFIG
+# include "pngusr.h"
+ /* These should have been defined in pngusr.h */
+# ifndef PNG_USER_PRIVATEBUILD
+# define PNG_USER_PRIVATEBUILD "Custom libpng build"
+# endif
+# ifndef PNG_USER_DLLFNAME_POSTFIX
+# define PNG_USER_DLLFNAME_POSTFIX "Cb"
+# endif
+#endif
+
+/* Compile time options.
+ * =====================
+ * In a multi-arch build the compiler may compile the code several times for the
+ * same object module, producing different binaries for different architectures.
+ * When this happens configure-time setting of the target host options cannot be
+ * done and this interferes with the handling of the ARM NEON optimizations, and
+ * possibly other similar optimizations. Put additional tests here; in general
+ * this is needed when the same option can be changed at both compile time and
+ * run time depending on the target OS (i.e. iOS vs Android.)
+ *
+ * NOTE: symbol prefixing does not pass $(CFLAGS) to the preprocessor, because
+ * this is not possible with certain compilers (Oracle SUN OS CC), as a result
+ * it is necessary to ensure that all extern functions that *might* be used
+ * regardless of $(CFLAGS) get declared in this file. The test on __ARM_NEON__
+ * below is one example of this behavior because it is controlled by the
+ * presence or not of -mfpu=neon on the GCC command line, it is possible to do
+ * this in $(CC), e.g. "CC=gcc -mfpu=neon", but people who build libpng rarely
+ * do this.
+ */
+#ifndef PNG_ARM_NEON_OPT
+ /* ARM NEON optimizations are being controlled by the compiler settings,
+ * typically the target FPU. If the FPU has been set to NEON (-mfpu=neon
+ * with GCC) then the compiler will define __ARM_NEON__ and we can rely
+ * unconditionally on NEON instructions not crashing, otherwise we must
+ * disable use of NEON instructions:
+ */
+# ifdef __ARM_NEON__
+# define PNG_ARM_NEON_OPT 2
+# else
+# define PNG_ARM_NEON_OPT 0
+# endif
+#endif
+
+#if PNG_ARM_NEON_OPT > 0
+ /* NEON optimizations are to be at least considered by libpng, so enable the
+ * callbacks to do this.
+ */
+# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_neon
+#endif
+
+/* Is this a build of a DLL where compilation of the object modules requires
+ * different preprocessor settings to those required for a simple library? If
+ * so PNG_BUILD_DLL must be set.
+ *
+ * If libpng is used inside a DLL but that DLL does not export the libpng APIs
+ * PNG_BUILD_DLL must not be set. To avoid the code below kicking in build a
+ * static library of libpng then link the DLL against that.
+ */
+#ifndef PNG_BUILD_DLL
+# ifdef DLL_EXPORT
+ /* This is set by libtool when files are compiled for a DLL; libtool
+ * always compiles twice, even on systems where it isn't necessary. Set
+ * PNG_BUILD_DLL in case it is necessary:
+ */
+# define PNG_BUILD_DLL
+# else
+# ifdef _WINDLL
+ /* This is set by the Microsoft Visual Studio IDE in projects that
+ * build a DLL. It can't easily be removed from those projects (it
+ * isn't visible in the Visual Studio UI) so it is a fairly reliable
+ * indication that PNG_IMPEXP needs to be set to the DLL export
+ * attributes.
+ */
+# define PNG_BUILD_DLL
+# else
+# ifdef __DLL__
+ /* This is set by the Borland C system when compiling for a DLL
+ * (as above.)
+ */
+# define PNG_BUILD_DLL
+# else
+ /* Add additional compiler cases here. */
+# endif
+# endif
+# endif
+#endif /* Setting PNG_BUILD_DLL if required */
+
+/* See pngconf.h for more details: the builder of the library may set this on
+ * the command line to the right thing for the specific compilation system or it
+ * may be automagically set above (at present we know of no system where it does
+ * need to be set on the command line.)
+ *
+ * PNG_IMPEXP must be set here when building the library to prevent pngconf.h
+ * setting it to the "import" setting for a DLL build.
+ */
+#ifndef PNG_IMPEXP
+# ifdef PNG_BUILD_DLL
+# define PNG_IMPEXP PNG_DLL_EXPORT
+# else
+ /* Not building a DLL, or the DLL doesn't require specific export
+ * definitions.
+ */
+# define PNG_IMPEXP
+# endif
+#endif
+
+/* No warnings for private or deprecated functions in the build: */
+#ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED
+#endif
+#ifndef PNG_PRIVATE
+# define PNG_PRIVATE
+#endif
+
+/* Symbol preprocessing support.
+ *
+ * To enable listing global, but internal, symbols the following macros should
+ * always be used to declare an extern data or function object in this file.
+ */
+#ifndef PNG_INTERNAL_DATA
+# define PNG_INTERNAL_DATA(type, name, array) extern type name array
+#endif
+
+#ifndef PNG_INTERNAL_FUNCTION
+# define PNG_INTERNAL_FUNCTION(type, name, args, attributes)\
+ extern PNG_FUNCTION(type, name, args, PNG_EMPTY attributes)
+#endif
+
+/* If floating or fixed point APIs are disabled they may still be compiled
+ * internally. To handle this make sure they are declared as the appropriate
+ * internal extern function (otherwise the symbol prefixing stuff won't work and
+ * the functions will be used without definitions.)
+ *
+ * NOTE: although all the API functions are declared here they are not all
+ * actually built! Because the declarations are still made it is necessary to
+ * fake out types that they depend on.
+ */
+#ifndef PNG_FP_EXPORT
+# ifndef PNG_FLOATING_POINT_SUPPORTED
+# define PNG_FP_EXPORT(ordinal, type, name, args)\
+ PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY);
+# ifndef PNG_VERSION_INFO_ONLY
+ typedef struct png_incomplete png_double;
+ typedef png_double* png_doublep;
+ typedef const png_double* png_const_doublep;
+ typedef png_double** png_doublepp;
+# endif
+# endif
+#endif
+#ifndef PNG_FIXED_EXPORT
+# ifndef PNG_FIXED_POINT_SUPPORTED
+# define PNG_FIXED_EXPORT(ordinal, type, name, args)\
+ PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY);
+# endif
+#endif
+
+#include "png.h"
+
+/* pngconf.h does not set PNG_DLL_EXPORT unless it is required, so: */
+#ifndef PNG_DLL_EXPORT
+# define PNG_DLL_EXPORT
+#endif
+
+/* SECURITY and SAFETY:
+ *
+ * By default libpng is built without any internal limits on image size,
+ * individual heap (png_malloc) allocations or the total amount of memory used.
+ * If PNG_SAFE_LIMITS_SUPPORTED is defined, however, the limits below are used
+ * (unless individually overridden). These limits are believed to be fairly
+ * safe, but builders of secure systems should verify the values against the
+ * real system capabilities.
+ */
+#ifdef PNG_SAFE_LIMITS_SUPPORTED
+ /* 'safe' limits */
+# ifndef PNG_USER_WIDTH_MAX
+# define PNG_USER_WIDTH_MAX 1000000
+# endif
+# ifndef PNG_USER_HEIGHT_MAX
+# define PNG_USER_HEIGHT_MAX 1000000
+# endif
+# ifndef PNG_USER_CHUNK_CACHE_MAX
+# define PNG_USER_CHUNK_CACHE_MAX 128
+# endif
+# ifndef PNG_USER_CHUNK_MALLOC_MAX
+# define PNG_USER_CHUNK_MALLOC_MAX 8000000
+# endif
+#else
+ /* values for no limits */
+# ifndef PNG_USER_WIDTH_MAX
+# define PNG_USER_WIDTH_MAX 0x7fffffff
+# endif
+# ifndef PNG_USER_HEIGHT_MAX
+# define PNG_USER_HEIGHT_MAX 0x7fffffff
+# endif
+# ifndef PNG_USER_CHUNK_CACHE_MAX
+# define PNG_USER_CHUNK_CACHE_MAX 0
+# endif
+# ifndef PNG_USER_CHUNK_MALLOC_MAX
+# define PNG_USER_CHUNK_MALLOC_MAX 0
+# endif
+#endif
+
+/* Moved to pngpriv.h at libpng-1.5.0 */
+/* NOTE: some of these may have been used in external applications as
+ * these definitions were exposed in pngconf.h prior to 1.5.
+ */
+
+/* If you are running on a machine where you cannot allocate more
+ * than 64K of memory at once, uncomment this. While libpng will not
+ * normally need that much memory in a chunk (unless you load up a very
+ * large file), zlib needs to know how big of a chunk it can use, and
+ * libpng thus makes sure to check any memory allocation to verify it
+ * will fit into memory.
+ *
+ * zlib provides 'MAXSEG_64K' which, if defined, indicates the
+ * same limit and pngconf.h (already included) sets the limit
+ * if certain operating systems are detected.
+ */
+#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
+# define PNG_MAX_MALLOC_64K
+#endif
+
+#ifndef PNG_UNUSED
+/* Unused formal parameter warnings are silenced using the following macro
+ * which is expected to have no bad effects on performance (optimizing
+ * compilers will probably remove it entirely). Note that if you replace
+ * it with something other than whitespace, you must include the terminating
+ * semicolon.
+ */
+# define PNG_UNUSED(param) (void)param;
+#endif
+
+/* Just a little check that someone hasn't tried to define something
+ * contradictory.
+ */
+#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
+# undef PNG_ZBUF_SIZE
+# define PNG_ZBUF_SIZE 65536L
+#endif
+
+/* If warnings or errors are turned off the code is disabled or redirected here.
+ * From 1.5.4 functions have been added to allow very limited formatting of
+ * error and warning messages - this code will also be disabled here.
+ */
+#ifdef PNG_WARNINGS_SUPPORTED
+# define PNG_WARNING_PARAMETERS(p) png_warning_parameters p;
+#else
+# define png_warning(s1,s2) ((void)(s1))
+# define png_chunk_warning(s1,s2) ((void)(s1))
+# define png_warning_parameter(p,number,string) ((void)0)
+# define png_warning_parameter_unsigned(p,number,format,value) ((void)0)
+# define png_warning_parameter_signed(p,number,format,value) ((void)0)
+# define png_formatted_warning(pp,p,message) ((void)(pp))
+# define PNG_WARNING_PARAMETERS(p)
+#endif
+#ifndef PNG_ERROR_TEXT_SUPPORTED
+# define png_error(s1,s2) png_err(s1)
+# define png_chunk_error(s1,s2) png_err(s1)
+# define png_fixed_error(s1,s2) png_err(s1)
+#endif
+
+/* C allows up-casts from (void*) to any pointer and (const void*) to any
+ * pointer to a const object. C++ regards this as a type error and requires an
+ * explicit, static, cast and provides the static_cast<> rune to ensure that
+ * const is not cast away.
+ */
+#ifdef __cplusplus
+# define png_voidcast(type, value) static_cast<type>(value)
+# define png_constcast(type, value) const_cast<type>(value)
+# define png_aligncast(type, value) \
+ static_cast<type>(static_cast<void*>(value))
+# define png_aligncastconst(type, value) \
+ static_cast<type>(static_cast<const void*>(value))
+#else
+# define png_voidcast(type, value) (value)
+# define png_constcast(type, value) ((type)(value))
+# define png_aligncast(type, value) ((void*)(value))
+# define png_aligncastconst(type, value) ((const void*)(value))
+#endif /* __cplusplus */
+
+/* Some fixed point APIs are still required even if not exported because
+ * they get used by the corresponding floating point APIs. This magic
+ * deals with this:
+ */
+#ifdef PNG_FIXED_POINT_SUPPORTED
+# define PNGFAPI PNGAPI
+#else
+# define PNGFAPI /* PRIVATE */
+#endif
+
+#ifndef PNG_VERSION_INFO_ONLY
+/* Other defines specific to compilers can go here. Try to keep
+ * them inside an appropriate ifdef/endif pair for portability.
+ */
+#if defined(PNG_FLOATING_POINT_SUPPORTED) ||\
+ defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
+ /* png.c requires the following ANSI-C constants if the conversion of
+ * floating point to ASCII is implemented therein:
+ *
+ * DBL_DIG Maximum number of decimal digits (can be set to any constant)
+ * DBL_MIN Smallest normalized fp number (can be set to an arbitrary value)
+ * DBL_MAX Maximum floating point number (can be set to an arbitrary value)
+ */
+# include <float.h>
+
+# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
+ defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
+ /* We need to check that <math.h> hasn't already been included earlier
+ * as it seems it doesn't agree with <fp.h>, yet we should really use
+ * <fp.h> if possible.
+ */
+# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
+# include <fp.h>
+# endif
+# else
+# include <math.h>
+# endif
+# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
+ /* Amiga SAS/C: We must include builtin FPU functions when compiling using
+ * MATH=68881
+ */
+# include <m68881.h>
+# endif
+#endif
+
+/* This provides the non-ANSI (far) memory allocation routines. */
+#if defined(__TURBOC__) && defined(__MSDOS__)
+# include <mem.h>
+# include <alloc.h>
+#endif
+
+#if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
+ defined(_WIN32) || defined(__WIN32__)
+# include <windows.h> /* defines _WINDOWS_ macro */
+#endif
+#endif /* PNG_VERSION_INFO_ONLY */
+
+/* Moved here around 1.5.0beta36 from pngconf.h */
+/* Users may want to use these so they are not private. Any library
+ * functions that are passed far data must be model-independent.
+ */
+
+/* Memory model/platform independent fns */
+#ifndef PNG_ABORT
+# ifdef _WINDOWS_
+# define PNG_ABORT() ExitProcess(0)
+# else
+# define PNG_ABORT() abort()
+# endif
+#endif
+
+/* These macros may need to be architecture dependent. */
+#define PNG_ALIGN_NONE 0 /* do not use data alignment */
+#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */
+#ifdef offsetof
+# define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */
+#else
+# define PNG_ALIGN_OFFSET -1 /* prevent the use of this */
+#endif
+#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */
+
+#ifndef PNG_ALIGN_TYPE
+ /* Default to using aligned access optimizations and requiring alignment to a
+ * multiple of the data type size. Override in a compiler specific fashion
+ * if necessary by inserting tests here:
+ */
+# define PNG_ALIGN_TYPE PNG_ALIGN_SIZE
+#endif
+
+#if PNG_ALIGN_TYPE == PNG_ALIGN_SIZE
+ /* This is used because in some compiler implementations non-aligned
+ * structure members are supported, so the offsetof approach below fails.
+ * Set PNG_ALIGN_SIZE=0 for compiler combinations where unaligned access
+ * is good for performance. Do not do this unless you have tested the result
+ * and understand it.
+ */
+# define png_alignof(type) (sizeof (type))
+#else
+# if PNG_ALIGN_TYPE == PNG_ALIGN_OFFSET
+# define png_alignof(type) offsetof(struct{char c; type t;}, t)
+# else
+# if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS
+# define png_alignof(type) (1)
+# endif
+ /* Else leave png_alignof undefined to prevent use thereof */
+# endif
+#endif
+
+/* This implicitly assumes alignment is always to a power of 2. */
+#ifdef png_alignof
+# define png_isaligned(ptr, type)\
+ ((((const char*)ptr-(const char*)0) & (png_alignof(type)-1)) == 0)
+#else
+# define png_isaligned(ptr, type) 0
+#endif
+
+/* End of memory model/platform independent support */
+/* End of 1.5.0beta36 move from pngconf.h */
+
+/* CONSTANTS and UTILITY MACROS
+ * These are used internally by libpng and not exposed in the API
+ */
+
+/* Various modes of operation. Note that after an init, mode is set to
+ * zero automatically when the structure is created. Three of these
+ * are defined in png.h because they need to be visible to applications
+ * that call png_set_unknown_chunk().
+ */
+/* #define PNG_HAVE_IHDR 0x01 (defined in png.h) */
+/* #define PNG_HAVE_PLTE 0x02 (defined in png.h) */
+#define PNG_HAVE_IDAT 0x04
+/* #define PNG_AFTER_IDAT 0x08 (defined in png.h) */
+#define PNG_HAVE_IEND 0x10
+ /* 0x20 (unused) */
+ /* 0x40 (unused) */
+ /* 0x80 (unused) */
+#define PNG_HAVE_CHUNK_HEADER 0x100
+#define PNG_WROTE_tIME 0x200
+#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
+#define PNG_BACKGROUND_IS_GRAY 0x800
+#define PNG_HAVE_PNG_SIGNATURE 0x1000
+#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
+ /* 0x4000 (unused) */
+#define PNG_IS_READ_STRUCT 0x8000 /* Else is a write struct */
+
+/* Flags for the transformations the PNG library does on the image data */
+#define PNG_BGR 0x0001
+#define PNG_INTERLACE 0x0002
+#define PNG_PACK 0x0004
+#define PNG_SHIFT 0x0008
+#define PNG_SWAP_BYTES 0x0010
+#define PNG_INVERT_MONO 0x0020
+#define PNG_QUANTIZE 0x0040
+#define PNG_COMPOSE 0x0080 /* Was PNG_BACKGROUND */
+#define PNG_BACKGROUND_EXPAND 0x0100
+#define PNG_EXPAND_16 0x0200 /* Added to libpng 1.5.2 */
+#define PNG_16_TO_8 0x0400 /* Becomes 'chop' in 1.5.4 */
+#define PNG_RGBA 0x0800
+#define PNG_EXPAND 0x1000
+#define PNG_GAMMA 0x2000
+#define PNG_GRAY_TO_RGB 0x4000
+#define PNG_FILLER 0x8000
+#define PNG_PACKSWAP 0x10000
+#define PNG_SWAP_ALPHA 0x20000
+#define PNG_STRIP_ALPHA 0x40000
+#define PNG_INVERT_ALPHA 0x80000
+#define PNG_USER_TRANSFORM 0x100000
+#define PNG_RGB_TO_GRAY_ERR 0x200000
+#define PNG_RGB_TO_GRAY_WARN 0x400000
+#define PNG_RGB_TO_GRAY 0x600000 /* two bits, RGB_TO_GRAY_ERR|WARN */
+#define PNG_ENCODE_ALPHA 0x800000 /* Added to libpng-1.5.4 */
+#define PNG_ADD_ALPHA 0x1000000 /* Added to libpng-1.2.7 */
+#define PNG_EXPAND_tRNS 0x2000000 /* Added to libpng-1.2.9 */
+#define PNG_SCALE_16_TO_8 0x4000000 /* Added to libpng-1.5.4 */
+ /* 0x8000000 unused */
+ /* 0x10000000 unused */
+ /* 0x20000000 unused */
+ /* 0x40000000 unused */
+/* Flags for png_create_struct */
+#define PNG_STRUCT_PNG 0x0001
+#define PNG_STRUCT_INFO 0x0002
+
+/* Scaling factor for filter heuristic weighting calculations */
+#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT))
+#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
+
+/* Flags for the png_ptr->flags rather than declaring a byte for each one */
+#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001
+#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002 /* Added to libpng-1.6.0 */
+ /* 0x0004 unused */
+#define PNG_FLAG_ZSTREAM_ENDED 0x0008 /* Added to libpng-1.6.0 */
+ /* 0x0010 unused */
+ /* 0x0020 unused */
+#define PNG_FLAG_ROW_INIT 0x0040
+#define PNG_FLAG_FILLER_AFTER 0x0080
+#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100
+#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200
+#define PNG_FLAG_CRC_CRITICAL_USE 0x0400
+#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800
+#define PNG_FLAG_ASSUME_sRGB 0x1000 /* Added to libpng-1.5.4 */
+#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000 /* Added to libpng-1.5.4 */
+#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000 /* Added to libpng-1.5.4 */
+/* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000 */
+/* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000 */
+#define PNG_FLAG_LIBRARY_MISMATCH 0x20000
+#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000
+#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000
+#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000 /* Added to libpng-1.4.0 */
+#define PNG_FLAG_APP_WARNINGS_WARN 0x200000 /* Added to libpng-1.6.0 */
+#define PNG_FLAG_APP_ERRORS_WARN 0x400000 /* Added to libpng-1.6.0 */
+ /* 0x800000 unused */
+ /* 0x1000000 unused */
+ /* 0x2000000 unused */
+ /* 0x4000000 unused */
+ /* 0x8000000 unused */
+ /* 0x10000000 unused */
+ /* 0x20000000 unused */
+ /* 0x40000000 unused */
+
+#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
+ PNG_FLAG_CRC_ANCILLARY_NOWARN)
+
+#define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \
+ PNG_FLAG_CRC_CRITICAL_IGNORE)
+
+#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \
+ PNG_FLAG_CRC_CRITICAL_MASK)
+
+/* Save typing and make code easier to understand */
+
+#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \
+ abs((int)((c1).green) - (int)((c2).green)) + \
+ abs((int)((c1).blue) - (int)((c2).blue)))
+
+/* Added to libpng-1.6.0: scale a 16-bit value in the range 0..65535 to 0..255
+ * by dividing by 257 *with rounding*. This macro is exact for the given range.
+ * See the discourse in pngrtran.c png_do_scale_16_to_8. The values in the
+ * macro were established by experiment (modifying the added value). The macro
+ * has a second variant that takes a value already scaled by 255 and divides by
+ * 65535 - this has a maximum error of .502. Over the range 0..65535*65535 it
+ * only gives off-by-one errors and only for 0.5% (1 in 200) of the values.
+ */
+#define PNG_DIV65535(v24) (((v24) + 32895) >> 16)
+#define PNG_DIV257(v16) PNG_DIV65535((png_uint_32)(v16) * 255)
+
+/* Added to libpng-1.2.6 JB */
+#define PNG_ROWBYTES(pixel_bits, width) \
+ ((pixel_bits) >= 8 ? \
+ ((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \
+ (( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) )
+
+/* PNG_OUT_OF_RANGE returns true if value is outside the range
+ * ideal-delta..ideal+delta. Each argument is evaluated twice.
+ * "ideal" and "delta" should be constants, normally simple
+ * integers, "value" a variable. Added to libpng-1.2.6 JB
+ */
+#define PNG_OUT_OF_RANGE(value, ideal, delta) \
+ ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )
+
+/* Conversions between fixed and floating point, only defined if
+ * required (to make sure the code doesn't accidentally use float
+ * when it is supposedly disabled.)
+ */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+/* The floating point conversion can't overflow, though it can and
+ * does lose accuracy relative to the original fixed point value.
+ * In practice this doesn't matter because png_fixed_point only
+ * stores numbers with very low precision. The png_ptr and s
+ * arguments are unused by default but are there in case error
+ * checking becomes a requirement.
+ */
+#define png_float(png_ptr, fixed, s) (.00001 * (fixed))
+
+/* The fixed point conversion performs range checking and evaluates
+ * its argument multiple times, so must be used with care. The
+ * range checking uses the PNG specification values for a signed
+ * 32 bit fixed point value except that the values are deliberately
+ * rounded-to-zero to an integral value - 21474 (21474.83 is roughly
+ * (2^31-1) * 100000). 's' is a string that describes the value being
+ * converted.
+ *
+ * NOTE: this macro will raise a png_error if the range check fails,
+ * therefore it is normally only appropriate to use this on values
+ * that come from API calls or other sources where an out of range
+ * error indicates a programming error, not a data error!
+ *
+ * NOTE: by default this is off - the macro is not used - because the
+ * function call saves a lot of code.
+ */
+#ifdef PNG_FIXED_POINT_MACRO_SUPPORTED
+#define png_fixed(png_ptr, fp, s) ((fp) <= 21474 && (fp) >= -21474 ?\
+ ((png_fixed_point)(100000 * (fp))) : (png_fixed_error(png_ptr, s),0))
+#endif
+/* else the corresponding function is defined below, inside the scope of the
+ * cplusplus test.
+ */
+#endif
+
+/* Constants for known chunk types. If you need to add a chunk, define the name
+ * here. For historical reasons these constants have the form png_<name>; i.e.
+ * the prefix is lower case. Please use decimal values as the parameters to
+ * match the ISO PNG specification and to avoid relying on the C locale
+ * interpretation of character values.
+ *
+ * Prior to 1.5.6 these constants were strings, as of 1.5.6 png_uint_32 values
+ * are computed and a new macro (PNG_STRING_FROM_CHUNK) added to allow a string
+ * to be generated if required.
+ *
+ * PNG_32b correctly produces a value shifted by up to 24 bits, even on
+ * architectures where (int) is only 16 bits.
+ */
+#define PNG_32b(b,s) ((png_uint_32)(b) << (s))
+#define PNG_U32(b1,b2,b3,b4) \
+ (PNG_32b(b1,24) | PNG_32b(b2,16) | PNG_32b(b3,8) | PNG_32b(b4,0))
+
+/* Constants for known chunk types.
+ *
+ * MAINTAINERS: If you need to add a chunk, define the name here.
+ * For historical reasons these constants have the form png_<name>; i.e.
+ * the prefix is lower case. Please use decimal values as the parameters to
+ * match the ISO PNG specification and to avoid relying on the C locale
+ * interpretation of character values. Please keep the list sorted.
+ *
+ * Notice that PNG_U32 is used to define a 32-bit value for the 4 byte chunk
+ * type. In fact the specification does not express chunk types this way,
+ * however using a 32-bit value means that the chunk type can be read from the
+ * stream using exactly the same code as used for a 32-bit unsigned value and
+ * can be examined far more efficiently (using one arithmetic compare).
+ *
+ * Prior to 1.5.6 the chunk type constants were expressed as C strings. The
+ * libpng API still uses strings for 'unknown' chunks and a macro,
+ * PNG_STRING_FROM_CHUNK, allows a string to be generated if required. Notice
+ * that for portable code numeric values must still be used; the string "IHDR"
+ * is not portable and neither is PNG_U32('I', 'H', 'D', 'R').
+ *
+ * In 1.7.0 the definitions will be made public in png.h to avoid having to
+ * duplicate the same definitions in application code.
+ */
+#define png_IDAT PNG_U32( 73, 68, 65, 84)
+#define png_IEND PNG_U32( 73, 69, 78, 68)
+#define png_IHDR PNG_U32( 73, 72, 68, 82)
+#define png_PLTE PNG_U32( 80, 76, 84, 69)
+#define png_bKGD PNG_U32( 98, 75, 71, 68)
+#define png_cHRM PNG_U32( 99, 72, 82, 77)
+#define png_fRAc PNG_U32(102, 82, 65, 99) /* registered, not defined */
+#define png_gAMA PNG_U32(103, 65, 77, 65)
+#define png_gIFg PNG_U32(103, 73, 70, 103)
+#define png_gIFt PNG_U32(103, 73, 70, 116) /* deprecated */
+#define png_gIFx PNG_U32(103, 73, 70, 120)
+#define png_hIST PNG_U32(104, 73, 83, 84)
+#define png_iCCP PNG_U32(105, 67, 67, 80)
+#define png_iTXt PNG_U32(105, 84, 88, 116)
+#define png_oFFs PNG_U32(111, 70, 70, 115)
+#define png_pCAL PNG_U32(112, 67, 65, 76)
+#define png_pHYs PNG_U32(112, 72, 89, 115)
+#define png_sBIT PNG_U32(115, 66, 73, 84)
+#define png_sCAL PNG_U32(115, 67, 65, 76)
+#define png_sPLT PNG_U32(115, 80, 76, 84)
+#define png_sRGB PNG_U32(115, 82, 71, 66)
+#define png_sTER PNG_U32(115, 84, 69, 82)
+#define png_tEXt PNG_U32(116, 69, 88, 116)
+#define png_tIME PNG_U32(116, 73, 77, 69)
+#define png_tRNS PNG_U32(116, 82, 78, 83)
+#define png_zTXt PNG_U32(122, 84, 88, 116)
+
+/* The following will work on (signed char*) strings, whereas the get_uint_32
+ * macro will fail on top-bit-set values because of the sign extension.
+ */
+#define PNG_CHUNK_FROM_STRING(s)\
+ PNG_U32(0xff&(s)[0], 0xff&(s)[1], 0xff&(s)[2], 0xff&(s)[3])
+
+/* This uses (char), not (png_byte) to avoid warnings on systems where (char) is
+ * signed and the argument is a (char[]) This macro will fail miserably on
+ * systems where (char) is more than 8 bits.
+ */
+#define PNG_STRING_FROM_CHUNK(s,c)\
+ (void)(((char*)(s))[0]=(char)((c)>>24), ((char*)(s))[1]=(char)((c)>>16),\
+ ((char*)(s))[2]=(char)((c)>>8), ((char*)(s))[3]=(char)((c)))
+
+/* Do the same but terminate with a null character. */
+#define PNG_CSTRING_FROM_CHUNK(s,c)\
+ (void)(PNG_STRING_FROM_CHUNK(s,c), ((char*)(s))[4] = 0)
+
+/* Test on flag values as defined in the spec (section 5.4): */
+#define PNG_CHUNK_ANCILLARY(c) (1 & ((c) >> 29))
+#define PNG_CHUNK_CRITICAL(c) (!PNG_CHUNK_ANCILLARY(c))
+#define PNG_CHUNK_PRIVATE(c) (1 & ((c) >> 21))
+#define PNG_CHUNK_RESERVED(c) (1 & ((c) >> 13))
+#define PNG_CHUNK_SAFE_TO_COPY(c) (1 & ((c) >> 5))
+
+/* Gamma values (new at libpng-1.5.4): */
+#define PNG_GAMMA_MAC_OLD 151724 /* Assume '1.8' is really 2.2/1.45! */
+#define PNG_GAMMA_MAC_INVERSE 65909
+#define PNG_GAMMA_sRGB_INVERSE 45455
+
+/* Almost everything below is C specific; the #defines above can be used in
+ * non-C code (so long as it is C-preprocessed) the rest of this stuff cannot.
+ */
+#ifndef PNG_VERSION_INFO_ONLY
+
+#include "pngstruct.h"
+#include "pnginfo.h"
+
+/* Validate the include paths - the include path used to generate pnglibconf.h
+ * must match that used in the build, or we must be using pnglibconf.h.prebuilt:
+ */
+#if PNG_ZLIB_VERNUM != 0 && PNG_ZLIB_VERNUM != ZLIB_VERNUM
+# error ZLIB_VERNUM != PNG_ZLIB_VERNUM \
+ "-I (include path) error: see the notes in pngpriv.h"
+ /* This means that when pnglibconf.h was built the copy of zlib.h that it
+ * used is not the same as the one being used here. Because the build of
+ * libpng makes decisions to use inflateInit2 and inflateReset2 based on the
+ * zlib version number and because this affects handling of certain broken
+ * PNG files the -I directives must match.
+ *
+ * The most likely explanation is that you passed a -I in CFLAGS, this will
+ * not work; all the preprocessor directories and in particular all the -I
+ * directives must be in CPPFLAGS.
+ */
+#endif
+
+/* This is used for 16 bit gamma tables -- only the top level pointers are
+ * const; this could be changed:
+ */
+typedef const png_uint_16p * png_const_uint_16pp;
+
+/* Added to libpng-1.5.7: sRGB conversion tables */
+#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
+ defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
+#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
+PNG_INTERNAL_DATA(const png_uint_16, png_sRGB_table, [256]);
+ /* Convert from an sRGB encoded value 0..255 to a 16-bit linear value,
+ * 0..65535. This table gives the closest 16-bit answers (no errors).
+ */
+#endif
+
+PNG_INTERNAL_DATA(const png_uint_16, png_sRGB_base, [512]);
+PNG_INTERNAL_DATA(const png_byte, png_sRGB_delta, [512]);
+
+#define PNG_sRGB_FROM_LINEAR(linear) ((png_byte)((png_sRGB_base[(linear)>>15] +\
+ ((((linear)&0x7fff)*png_sRGB_delta[(linear)>>15])>>12)) >> 8))
+ /* Given a value 'linear' in the range 0..255*65535 calculate the 8-bit sRGB
+ * encoded value with maximum error 0.646365. Note that the input is not a
+ * 16-bit value; it has been multiplied by 255! */
+#endif /* PNG_SIMPLIFIED_READ/WRITE */
+
+
+/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* Internal functions; these are not exported from a DLL however because they
+ * are used within several of the C source files they have to be C extern.
+ *
+ * All of these functions must be declared with PNG_INTERNAL_FUNCTION.
+ */
+
+/* Zlib support */
+#define PNG_UNEXPECTED_ZLIB_RETURN (-7)
+PNG_INTERNAL_FUNCTION(void, png_zstream_error,(png_structrp png_ptr, int ret),
+ PNG_EMPTY);
+ /* Used by the zlib handling functions to ensure that z_stream::msg is always
+ * set before they return.
+ */
+
+#ifdef PNG_WRITE_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_free_buffer_list,(png_structrp png_ptr,
+ png_compression_bufferp *list),PNG_EMPTY);
+ /* Free the buffer list used by the compressed write code. */
+#endif
+
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && \
+ !defined(PNG_FIXED_POINT_MACRO_SUPPORTED) && \
+ (defined(PNG_gAMA_SUPPORTED) || defined(PNG_cHRM_SUPPORTED) || \
+ defined(PNG_sCAL_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)) || \
+ (defined(PNG_sCAL_SUPPORTED) && \
+ defined(PNG_FLOATING_ARITHMETIC_SUPPORTED))
+PNG_INTERNAL_FUNCTION(png_fixed_point,png_fixed,(png_const_structrp png_ptr,
+ double fp, png_const_charp text),PNG_EMPTY);
+#endif
+
+/* Check the user version string for compatibility, returns false if the version
+ * numbers aren't compatible.
+ */
+PNG_INTERNAL_FUNCTION(int,png_user_version_check,(png_structrp png_ptr,
+ png_const_charp user_png_ver),PNG_EMPTY);
+
+/* Internal base allocator - no messages, NULL on failure to allocate. This
+ * does, however, call the application provided allocator and that could call
+ * png_error (although that would be a bug in the application implementation.)
+ */
+PNG_INTERNAL_FUNCTION(png_voidp,png_malloc_base,(png_const_structrp png_ptr,
+ png_alloc_size_t size),PNG_ALLOCATED);
+
+#if defined(PNG_TEXT_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) ||\
+ defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED)
+/* Internal array allocator, outputs no error or warning messages on failure,
+ * just returns NULL.
+ */
+PNG_INTERNAL_FUNCTION(png_voidp,png_malloc_array,(png_const_structrp png_ptr,
+ int nelements, size_t element_size),PNG_ALLOCATED);
+
+/* The same but an existing array is extended by add_elements. This function
+ * also memsets the new elements to 0 and copies the old elements. The old
+ * array is not freed or altered.
+ */
+PNG_INTERNAL_FUNCTION(png_voidp,png_realloc_array,(png_const_structrp png_ptr,
+ png_const_voidp array, int old_elements, int add_elements,
+ size_t element_size),PNG_ALLOCATED);
+#endif /* text, sPLT or unknown chunks */
+
+/* Magic to create a struct when there is no struct to call the user supplied
+ * memory allocators. Because error handling has not been set up the memory
+ * handlers can't safely call png_error, but this is an obscure and undocumented
+ * restriction so libpng has to assume that the 'free' handler, at least, might
+ * call png_error.
+ */
+PNG_INTERNAL_FUNCTION(png_structp,png_create_png_struct,
+ (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn,
+ png_free_ptr free_fn),PNG_ALLOCATED);
+
+/* Free memory from internal libpng struct */
+PNG_INTERNAL_FUNCTION(void,png_destroy_png_struct,(png_structrp png_ptr),
+ PNG_EMPTY);
+
+/* Free an allocated jmp_buf (always succeeds) */
+PNG_INTERNAL_FUNCTION(void,png_free_jmpbuf,(png_structrp png_ptr),PNG_EMPTY);
+
+/* Function to allocate memory for zlib. PNGAPI is disallowed. */
+PNG_INTERNAL_FUNCTION(voidpf,png_zalloc,(voidpf png_ptr, uInt items, uInt size),
+ PNG_ALLOCATED);
+
+/* Function to free memory for zlib. PNGAPI is disallowed. */
+PNG_INTERNAL_FUNCTION(void,png_zfree,(voidpf png_ptr, voidpf ptr),PNG_EMPTY);
+
+/* Next four functions are used internally as callbacks. PNGCBAPI is required
+ * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3, changed to
+ * PNGCBAPI at 1.5.0
+ */
+
+PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_read_data,(png_structp png_ptr,
+ png_bytep data, png_size_t length),PNG_EMPTY);
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_push_fill_buffer,(png_structp png_ptr,
+ png_bytep buffer, png_size_t length),PNG_EMPTY);
+#endif
+
+PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_write_data,(png_structp png_ptr,
+ png_bytep data, png_size_t length),PNG_EMPTY);
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+# ifdef PNG_STDIO_SUPPORTED
+PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_flush,(png_structp png_ptr),
+ PNG_EMPTY);
+# endif
+#endif
+
+/* Reset the CRC variable */
+PNG_INTERNAL_FUNCTION(void,png_reset_crc,(png_structrp png_ptr),PNG_EMPTY);
+
+/* Write the "data" buffer to whatever output you are using */
+PNG_INTERNAL_FUNCTION(void,png_write_data,(png_structrp png_ptr,
+ png_const_bytep data, png_size_t length),PNG_EMPTY);
+
+/* Read and check the PNG file signature */
+PNG_INTERNAL_FUNCTION(void,png_read_sig,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+
+/* Read the chunk header (length + type name) */
+PNG_INTERNAL_FUNCTION(png_uint_32,png_read_chunk_header,(png_structrp png_ptr),
+ PNG_EMPTY);
+
+/* Read data from whatever input you are using into the "data" buffer */
+PNG_INTERNAL_FUNCTION(void,png_read_data,(png_structrp png_ptr, png_bytep data,
+ png_size_t length),PNG_EMPTY);
+
+/* Read bytes into buf, and update png_ptr->crc */
+PNG_INTERNAL_FUNCTION(void,png_crc_read,(png_structrp png_ptr, png_bytep buf,
+ png_uint_32 length),PNG_EMPTY);
+
+/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */
+PNG_INTERNAL_FUNCTION(int,png_crc_finish,(png_structrp png_ptr,
+ png_uint_32 skip),PNG_EMPTY);
+
+/* Read the CRC from the file and compare it to the libpng calculated CRC */
+PNG_INTERNAL_FUNCTION(int,png_crc_error,(png_structrp png_ptr),PNG_EMPTY);
+
+/* Calculate the CRC over a section of data. Note that we are only
+ * passing a maximum of 64K on systems that have this as a memory limit,
+ * since this is the maximum buffer size we can specify.
+ */
+PNG_INTERNAL_FUNCTION(void,png_calculate_crc,(png_structrp png_ptr,
+ png_const_bytep ptr, png_size_t length),PNG_EMPTY);
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_flush,(png_structrp png_ptr),PNG_EMPTY);
+#endif
+
+/* Write various chunks */
+
+/* Write the IHDR chunk, and update the png_struct with the necessary
+ * information.
+ */
+PNG_INTERNAL_FUNCTION(void,png_write_IHDR,(png_structrp png_ptr,
+ png_uint_32 width, png_uint_32 height, int bit_depth, int color_type,
+ int compression_method, int filter_method, int interlace_method),PNG_EMPTY);
+
+PNG_INTERNAL_FUNCTION(void,png_write_PLTE,(png_structrp png_ptr,
+ png_const_colorp palette, png_uint_32 num_pal),PNG_EMPTY);
+
+PNG_INTERNAL_FUNCTION(void,png_compress_IDAT,(png_structrp png_ptr,
+ png_const_bytep row_data, png_alloc_size_t row_data_length, int flush),
+ PNG_EMPTY);
+
+PNG_INTERNAL_FUNCTION(void,png_write_IEND,(png_structrp png_ptr),PNG_EMPTY);
+
+#ifdef PNG_WRITE_gAMA_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_gAMA_fixed,(png_structrp png_ptr,
+ png_fixed_point file_gamma),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_sBIT_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_sBIT,(png_structrp png_ptr,
+ png_const_color_8p sbit, int color_type),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_cHRM_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_cHRM_fixed,(png_structrp png_ptr,
+ const png_xy *xy), PNG_EMPTY);
+ /* The xy value must have been previously validated */
+#endif
+
+#ifdef PNG_WRITE_sRGB_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_sRGB,(png_structrp png_ptr,
+ int intent),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_iCCP_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_iCCP,(png_structrp png_ptr,
+ png_const_charp name, png_const_bytep profile), PNG_EMPTY);
+ /* The profile must have been previously validated for correctness, the
+ * length comes from the first four bytes. Only the base, deflate,
+ * compression is supported.
+ */
+#endif
+
+#ifdef PNG_WRITE_sPLT_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_sPLT,(png_structrp png_ptr,
+ png_const_sPLT_tp palette),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_tRNS_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_tRNS,(png_structrp png_ptr,
+ png_const_bytep trans, png_const_color_16p values, int number,
+ int color_type),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_bKGD_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_bKGD,(png_structrp png_ptr,
+ png_const_color_16p values, int color_type),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_hIST_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_hIST,(png_structrp png_ptr,
+ png_const_uint_16p hist, int num_hist),PNG_EMPTY);
+#endif
+
+/* Chunks that have keywords */
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_tEXt,(png_structrp png_ptr,
+ png_const_charp key, png_const_charp text, png_size_t text_len),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_zTXt,(png_structrp png_ptr, png_const_charp
+ key, png_const_charp text, png_size_t text_len, int compression),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_iTXt,(png_structrp png_ptr,
+ int compression, png_const_charp key, png_const_charp lang,
+ png_const_charp lang_key, png_const_charp text),PNG_EMPTY);
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */
+PNG_INTERNAL_FUNCTION(int,png_set_text_2,(png_const_structrp png_ptr,
+ png_inforp info_ptr, png_const_textp text_ptr, int num_text),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_oFFs_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_oFFs,(png_structrp png_ptr,
+ png_int_32 x_offset, png_int_32 y_offset, int unit_type),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_pCAL_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_pCAL,(png_structrp png_ptr,
+ png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams,
+ png_const_charp units, png_charpp params),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_pHYs_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_pHYs,(png_structrp png_ptr,
+ png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
+ int unit_type),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_tIME_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_tIME,(png_structrp png_ptr,
+ png_const_timep mod_time),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_sCAL_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_sCAL_s,(png_structrp png_ptr,
+ int unit, png_const_charp width, png_const_charp height),PNG_EMPTY);
+#endif
+
+/* Called when finished processing a row of data */
+PNG_INTERNAL_FUNCTION(void,png_write_finish_row,(png_structrp png_ptr),
+ PNG_EMPTY);
+
+/* Internal use only. Called before first row of data */
+PNG_INTERNAL_FUNCTION(void,png_write_start_row,(png_structrp png_ptr),
+ PNG_EMPTY);
+
+/* Combine a row of data, dealing with alpha, etc. if requested. 'row' is an
+ * array of png_ptr->width pixels. If the image is not interlaced or this
+ * is the final pass this just does a memcpy, otherwise the "display" flag
+ * is used to determine whether to copy pixels that are not in the current pass.
+ *
+ * Because 'png_do_read_interlace' (below) replicates pixels this allows this
+ * function to achieve the documented 'blocky' appearance during interlaced read
+ * if display is 1 and the 'sparkle' appearance, where existing pixels in 'row'
+ * are not changed if they are not in the current pass, when display is 0.
+ *
+ * 'display' must be 0 or 1, otherwise the memcpy will be done regardless.
+ *
+ * The API always reads from the png_struct row buffer and always assumes that
+ * it is full width (png_do_read_interlace has already been called.)
+ *
+ * This function is only ever used to write to row buffers provided by the
+ * caller of the relevant libpng API and the row must have already been
+ * transformed by the read transformations.
+ *
+ * The PNG_USE_COMPILE_TIME_MASKS option causes generation of pre-computed
+ * bitmasks for use within the code, otherwise runtime generated masks are used.
+ * The default is compile time masks.
+ */
+#ifndef PNG_USE_COMPILE_TIME_MASKS
+# define PNG_USE_COMPILE_TIME_MASKS 1
+#endif
+PNG_INTERNAL_FUNCTION(void,png_combine_row,(png_const_structrp png_ptr,
+ png_bytep row, int display),PNG_EMPTY);
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+/* Expand an interlaced row: the 'row_info' describes the pass data that has
+ * been read in and must correspond to the pixels in 'row', the pixels are
+ * expanded (moved apart) in 'row' to match the final layout, when doing this
+ * the pixels are *replicated* to the intervening space. This is essential for
+ * the correct operation of png_combine_row, above.
+ */
+PNG_INTERNAL_FUNCTION(void,png_do_read_interlace,(png_row_infop row_info,
+ png_bytep row, int pass, png_uint_32 transformations),PNG_EMPTY);
+#endif
+
+/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+/* Grab pixels out of a row for an interlaced pass */
+PNG_INTERNAL_FUNCTION(void,png_do_write_interlace,(png_row_infop row_info,
+ png_bytep row, int pass),PNG_EMPTY);
+#endif
+
+/* Unfilter a row: check the filter value before calling this, there is no point
+ * calling it for PNG_FILTER_VALUE_NONE.
+ */
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row,(png_structrp pp, png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row, int filter),PNG_EMPTY);
+
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_neon,(png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+
+/* Choose the best filter to use and filter the row data */
+PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr,
+ png_row_infop row_info),PNG_EMPTY);
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_read_IDAT_data,(png_structrp png_ptr,
+ png_bytep output, png_alloc_size_t avail_out),PNG_EMPTY);
+ /* Read 'avail_out' bytes of data from the IDAT stream. If the output buffer
+ * is NULL the function checks, instead, for the end of the stream. In this
+ * case a benign error will be issued if the stream end is not found or if
+ * extra data has to be consumed.
+ */
+PNG_INTERNAL_FUNCTION(void,png_read_finish_IDAT,(png_structrp png_ptr),
+ PNG_EMPTY);
+ /* This cleans up when the IDAT LZ stream does not end when the last image
+ * byte is read; there is still some pending input.
+ */
+
+PNG_INTERNAL_FUNCTION(void,png_read_finish_row,(png_structrp png_ptr),
+ PNG_EMPTY);
+ /* Finish a row while reading, dealing with interlacing passes, etc. */
+#endif
+
+/* Initialize the row buffers, etc. */
+PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY);
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+/* Optional call to update the users info structure */
+PNG_INTERNAL_FUNCTION(void,png_read_transform_info,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+#endif
+
+/* These are the functions that do the transformations */
+#ifdef PNG_READ_FILLER_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_read_filler,(png_row_infop row_info,
+ png_bytep row, png_uint_32 filler, png_uint_32 flags),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_read_swap_alpha,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_write_swap_alpha,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_read_invert_alpha,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_write_invert_alpha,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
+ defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
+PNG_INTERNAL_FUNCTION(void,png_do_strip_channel,(png_row_infop row_info,
+ png_bytep row, int at_start),PNG_EMPTY);
+#endif
+
+#ifdef PNG_16BIT_SUPPORTED
+#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
+PNG_INTERNAL_FUNCTION(void,png_do_swap,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+#endif
+
+#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
+ defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+PNG_INTERNAL_FUNCTION(void,png_do_packswap,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+PNG_INTERNAL_FUNCTION(int,png_do_rgb_to_gray,(png_structrp png_ptr,
+ png_row_infop row_info, png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_gray_to_rgb,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_PACK_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_unpack,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_unshift,(png_row_infop row_info,
+ png_bytep row, png_const_color_8p sig_bits),PNG_EMPTY);
+#endif
+
+#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
+PNG_INTERNAL_FUNCTION(void,png_do_invert,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_scale_16_to_8,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_chop,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_quantize,(png_row_infop row_info,
+ png_bytep row, png_const_bytep palette_lookup,
+ png_const_bytep quantize_lookup),PNG_EMPTY);
+
+# ifdef PNG_CORRECT_PALETTE_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_correct_palette,(png_structrp png_ptr,
+ png_colorp palette, int num_palette),PNG_EMPTY);
+# endif
+#endif
+
+#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
+PNG_INTERNAL_FUNCTION(void,png_do_bgr,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_PACK_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_pack,(png_row_infop row_info,
+ png_bytep row, png_uint_32 bit_depth),PNG_EMPTY);
+#endif
+
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_shift,(png_row_infop row_info,
+ png_bytep row, png_const_color_8p bit_depth),PNG_EMPTY);
+#endif
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+PNG_INTERNAL_FUNCTION(void,png_do_compose,(png_row_infop row_info,
+ png_bytep row, png_structrp png_ptr),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_gamma,(png_row_infop row_info,
+ png_bytep row, png_structrp png_ptr),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_encode_alpha,(png_row_infop row_info,
+ png_bytep row, png_structrp png_ptr),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_expand_palette,(png_row_infop row_info,
+ png_bytep row, png_const_colorp palette, png_const_bytep trans,
+ int num_trans),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_do_expand,(png_row_infop row_info,
+ png_bytep row, png_const_color_16p trans_color),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_EXPAND_16_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_expand_16,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+/* The following decodes the appropriate chunks, and does error correction,
+ * then calls the appropriate callback for the chunk if it is valid.
+ */
+
+/* Decode the IHDR chunk */
+PNG_INTERNAL_FUNCTION(void,png_handle_IHDR,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_handle_PLTE,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_handle_IEND,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+
+#ifdef PNG_READ_bKGD_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_bKGD,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_cHRM_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_cHRM,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_gAMA_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_gAMA,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_hIST_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_hIST,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_iCCP_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_iCCP,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif /* PNG_READ_iCCP_SUPPORTED */
+
+#ifdef PNG_READ_iTXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_iTXt,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_oFFs_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_oFFs,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_pCAL_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_pCAL,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_pHYs_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_pHYs,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_sBIT_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_sBIT,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_sCAL_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_sCAL,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_sPLT_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_sPLT,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif /* PNG_READ_sPLT_SUPPORTED */
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_sRGB,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_tEXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_tEXt,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_tIME_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_tIME,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_tRNS_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_tRNS,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_zTXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_zTXt,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
+PNG_INTERNAL_FUNCTION(void,png_check_chunk_name,(png_structrp png_ptr,
+ png_uint_32 chunk_name),PNG_EMPTY);
+
+#ifdef PNG_READ_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_unknown,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length, int keep),PNG_EMPTY);
+ /* This is the function that gets called for unknown chunks. The 'keep'
+ * argument is either non-zero for a known chunk that has been set to be
+ * handled as unknown or zero for an unknown chunk. By default the function
+ * just skips the chunk or errors out if it is critical.
+ */
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+PNG_INTERNAL_FUNCTION(int,png_chunk_unknown_handling,
+ (png_const_structrp png_ptr, png_uint_32 chunk_name),PNG_EMPTY);
+ /* Exactly as the API png_handle_as_unknown() except that the argument is a
+ * 32-bit chunk name, not a string.
+ */
+#endif
+#endif /* PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED */
+
+/* Handle the transformations for reading and writing */
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_read_transformations,(png_structrp png_ptr,
+ png_row_infop row_info),PNG_EMPTY);
+#endif
+#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_write_transformations,(png_structrp png_ptr,
+ png_row_infop row_info),PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_init_read_transformations,(png_structrp png_ptr),
+ PNG_EMPTY);
+#endif
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_push_read_chunk,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_read_sig,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_check_crc,(png_structrp png_ptr),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_crc_skip,(png_structrp png_ptr,
+ png_uint_32 length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_crc_finish,(png_structrp png_ptr),
+ PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_save_buffer,(png_structrp png_ptr),
+ PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_restore_buffer,(png_structrp png_ptr,
+ png_bytep buffer, png_size_t buffer_length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_read_IDAT,(png_structrp png_ptr),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_process_IDAT_data,(png_structrp png_ptr,
+ png_bytep buffer, png_size_t buffer_length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_process_row,(png_structrp png_ptr),
+ PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_handle_unknown,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_have_info,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_have_end,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_have_row,(png_structrp png_ptr,
+ png_bytep row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_read_end,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_process_some_data,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_push_finish_row,(png_structrp png_ptr),
+ PNG_EMPTY);
+# ifdef PNG_READ_tEXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_push_handle_tEXt,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_read_tEXt,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+# endif
+# ifdef PNG_READ_zTXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_push_handle_zTXt,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_read_zTXt,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+# endif
+# ifdef PNG_READ_iTXt_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_push_handle_iTXt,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_push_read_iTXt,(png_structrp png_ptr,
+ png_inforp info_ptr),PNG_EMPTY);
+# endif
+
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_do_read_intrapixel,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_do_write_intrapixel,(png_row_infop row_info,
+ png_bytep row),PNG_EMPTY);
+#endif
+
+/* Added at libpng version 1.6.0 */
+#ifdef PNG_GAMMA_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_colorspace_set_gamma,(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, png_fixed_point gAMA), PNG_EMPTY);
+ /* Set the colorspace gamma with a value provided by the application or by
+ * the gAMA chunk on read. The value will override anything set by an ICC
+ * profile.
+ */
+
+PNG_INTERNAL_FUNCTION(void,png_colorspace_sync_info,(png_const_structrp png_ptr,
+ png_inforp info_ptr), PNG_EMPTY);
+ /* Synchronize the info 'valid' flags with the colorspace */
+
+PNG_INTERNAL_FUNCTION(void,png_colorspace_sync,(png_const_structrp png_ptr,
+ png_inforp info_ptr), PNG_EMPTY);
+ /* Copy the png_struct colorspace to the info_struct and call the above to
+ * synchronize the flags. Checks for NULL info_ptr and does nothing.
+ */
+#endif
+
+/* Added at libpng version 1.4.0 */
+#ifdef PNG_COLORSPACE_SUPPORTED
+/* These internal functions are for maintaining the colorspace structure within
+ * a png_info or png_struct (or, indeed, both).
+ */
+PNG_INTERNAL_FUNCTION(int,png_colorspace_set_chromaticities,
+ (png_const_structrp png_ptr, png_colorspacerp colorspace, const png_xy *xy,
+ int preferred), PNG_EMPTY);
+
+PNG_INTERNAL_FUNCTION(int,png_colorspace_set_endpoints,
+ (png_const_structrp png_ptr, png_colorspacerp colorspace, const png_XYZ *XYZ,
+ int preferred), PNG_EMPTY);
+
+#ifdef PNG_sRGB_SUPPORTED
+PNG_INTERNAL_FUNCTION(int,png_colorspace_set_sRGB,(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, int intent), PNG_EMPTY);
+ /* This does set the colorspace gAMA and cHRM values too, but doesn't set the
+ * flags to write them, if it returns false there was a problem and an error
+ * message has already been output (but the colorspace may still need to be
+ * synced to record the invalid flag).
+ */
+#endif /* sRGB */
+
+#ifdef PNG_iCCP_SUPPORTED
+PNG_INTERNAL_FUNCTION(int,png_colorspace_set_ICC,(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, png_const_charp name,
+ png_uint_32 profile_length, png_const_bytep profile, int color_type),
+ PNG_EMPTY);
+ /* The 'name' is used for information only */
+
+/* Routines for checking parts of an ICC profile. */
+PNG_INTERNAL_FUNCTION(int,png_icc_check_length,(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, png_const_charp name,
+ png_uint_32 profile_length), PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(int,png_icc_check_header,(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, png_const_charp name,
+ png_uint_32 profile_length,
+ png_const_bytep profile /* first 132 bytes only */, int color_type),
+ PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(int,png_icc_check_tag_table,(png_const_structrp png_ptr,
+ png_colorspacerp colorspace, png_const_charp name,
+ png_uint_32 profile_length,
+ png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY);
+#ifdef PNG_sRGB_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_icc_set_sRGB,(
+ png_const_structrp png_ptr, png_colorspacerp colorspace,
+ png_const_bytep profile, uLong adler), PNG_EMPTY);
+ /* 'adler' is the Adler32 checksum of the uncompressed profile data. It may
+ * be zero to indicate that it is not available. It is used, if provided,
+ * as a fast check on the profile when checking to see if it is sRGB.
+ */
+#endif
+#endif /* iCCP */
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_colorspace_set_rgb_coefficients,
+ (png_structrp png_ptr), PNG_EMPTY);
+ /* Set the rgb_to_gray coefficients from the colorspace Y values */
+#endif /* READ_RGB_TO_GRAY */
+#endif /* COLORSPACE */
+
+/* Added at libpng version 1.4.0 */
+PNG_INTERNAL_FUNCTION(void,png_check_IHDR,(png_const_structrp png_ptr,
+ png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_type, int compression_type,
+ int filter_type),PNG_EMPTY);
+
+/* Added at libpng version 1.5.10 */
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+ defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+PNG_INTERNAL_FUNCTION(void,png_do_check_palette_indexes,
+ (png_structrp png_ptr, png_row_infop row_info),PNG_EMPTY);
+#endif
+
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
+PNG_INTERNAL_FUNCTION(void,png_fixed_error,(png_const_structrp png_ptr,
+ png_const_charp name),PNG_NORETURN);
+#endif
+
+/* Puts 'string' into 'buffer' at buffer[pos], taking care never to overwrite
+ * the end. Always leaves the buffer nul terminated. Never errors out (and
+ * there is no error code.)
+ */
+PNG_INTERNAL_FUNCTION(size_t,png_safecat,(png_charp buffer, size_t bufsize,
+ size_t pos, png_const_charp string),PNG_EMPTY);
+
+/* Various internal functions to handle formatted warning messages, currently
+ * only implemented for warnings.
+ */
+#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_TIME_RFC1123_SUPPORTED)
+/* Utility to dump an unsigned value into a buffer, given a start pointer and
+ * and end pointer (which should point just *beyond* the end of the buffer!)
+ * Returns the pointer to the start of the formatted string. This utility only
+ * does unsigned values.
+ */
+PNG_INTERNAL_FUNCTION(png_charp,png_format_number,(png_const_charp start,
+ png_charp end, int format, png_alloc_size_t number),PNG_EMPTY);
+
+/* Convenience macro that takes an array: */
+#define PNG_FORMAT_NUMBER(buffer,format,number) \
+ png_format_number(buffer, buffer + (sizeof buffer), format, number)
+
+/* Suggested size for a number buffer (enough for 64 bits and a sign!) */
+#define PNG_NUMBER_BUFFER_SIZE 24
+
+/* These are the integer formats currently supported, the name is formed from
+ * the standard printf(3) format string.
+ */
+#define PNG_NUMBER_FORMAT_u 1 /* chose unsigned API! */
+#define PNG_NUMBER_FORMAT_02u 2
+#define PNG_NUMBER_FORMAT_d 1 /* chose signed API! */
+#define PNG_NUMBER_FORMAT_02d 2
+#define PNG_NUMBER_FORMAT_x 3
+#define PNG_NUMBER_FORMAT_02x 4
+#define PNG_NUMBER_FORMAT_fixed 5 /* choose the signed API */
+#endif
+
+#ifdef PNG_WARNINGS_SUPPORTED
+/* New defines and members adding in libpng-1.5.4 */
+# define PNG_WARNING_PARAMETER_SIZE 32
+# define PNG_WARNING_PARAMETER_COUNT 8 /* Maximum 9; see pngerror.c */
+
+/* An l-value of this type has to be passed to the APIs below to cache the
+ * values of the parameters to a formatted warning message.
+ */
+typedef char png_warning_parameters[PNG_WARNING_PARAMETER_COUNT][
+ PNG_WARNING_PARAMETER_SIZE];
+
+PNG_INTERNAL_FUNCTION(void,png_warning_parameter,(png_warning_parameters p,
+ int number, png_const_charp string),PNG_EMPTY);
+ /* Parameters are limited in size to PNG_WARNING_PARAMETER_SIZE characters,
+ * including the trailing '\0'.
+ */
+PNG_INTERNAL_FUNCTION(void,png_warning_parameter_unsigned,
+ (png_warning_parameters p, int number, int format, png_alloc_size_t value),
+ PNG_EMPTY);
+ /* Use png_alloc_size_t because it is an unsigned type as big as any we
+ * need to output. Use the following for a signed value.
+ */
+PNG_INTERNAL_FUNCTION(void,png_warning_parameter_signed,
+ (png_warning_parameters p, int number, int format, png_int_32 value),
+ PNG_EMPTY);
+
+PNG_INTERNAL_FUNCTION(void,png_formatted_warning,(png_const_structrp png_ptr,
+ png_warning_parameters p, png_const_charp message),PNG_EMPTY);
+ /* 'message' follows the X/Open approach of using @1, @2 to insert
+ * parameters previously supplied using the above functions. Errors in
+ * specifying the parameters will simply result in garbage substitutions.
+ */
+#endif
+
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+/* Application errors (new in 1.6); use these functions (declared below) for
+ * errors in the parameters or order of API function calls on read. The
+ * 'warning' should be used for an error that can be handled completely; the
+ * 'error' for one which can be handled safely but which may lose application
+ * information or settings.
+ *
+ * By default these both result in a png_error call prior to release, while in a
+ * released version the 'warning' is just a warning. However if the application
+ * explicitly disables benign errors (explicitly permitting the code to lose
+ * information) they both turn into warnings.
+ *
+ * If benign errors aren't supported they end up as the corresponding base call
+ * (png_warning or png_error.)
+ */
+PNG_INTERNAL_FUNCTION(void,png_app_warning,(png_const_structrp png_ptr,
+ png_const_charp message),PNG_EMPTY);
+ /* The application provided invalid parameters to an API function or called
+ * an API function at the wrong time, libpng can completely recover.
+ */
+
+PNG_INTERNAL_FUNCTION(void,png_app_error,(png_const_structrp png_ptr,
+ png_const_charp message),PNG_EMPTY);
+ /* As above but libpng will ignore the call, or attempt some other partial
+ * recovery from the error.
+ */
+#else
+# define png_app_warning(pp,s) png_warning(pp,s)
+# define png_app_error(pp,s) png_error(pp,s)
+#endif
+
+PNG_INTERNAL_FUNCTION(void,png_chunk_report,(png_const_structrp png_ptr,
+ png_const_charp message, int error),PNG_EMPTY);
+ /* Report a recoverable issue in chunk data. On read this is used to report
+ * a problem found while reading a particular chunk and the
+ * png_chunk_benign_error or png_chunk_warning function is used as
+ * appropriate. On write this is used to report an error that comes from
+ * data set via an application call to a png_set_ API and png_app_error or
+ * png_app_warning is used as appropriate.
+ *
+ * The 'error' parameter must have one of the following values:
+ */
+#define PNG_CHUNK_WARNING 0 /* never an error */
+#define PNG_CHUNK_WRITE_ERROR 1 /* an error only on write */
+#define PNG_CHUNK_ERROR 2 /* always an error */
+
+/* ASCII to FP interfaces, currently only implemented if sCAL
+ * support is required.
+ */
+#if defined(PNG_sCAL_SUPPORTED)
+/* MAX_DIGITS is actually the maximum number of characters in an sCAL
+ * width or height, derived from the precision (number of significant
+ * digits - a build time settable option) and assumptions about the
+ * maximum ridiculous exponent.
+ */
+#define PNG_sCAL_MAX_DIGITS (PNG_sCAL_PRECISION+1/*.*/+1/*E*/+10/*exponent*/)
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_ascii_from_fp,(png_const_structrp png_ptr,
+ png_charp ascii, png_size_t size, double fp, unsigned int precision),
+ PNG_EMPTY);
+#endif /* FLOATING_POINT */
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr,
+ png_charp ascii, png_size_t size, png_fixed_point fp),PNG_EMPTY);
+#endif /* FIXED_POINT */
+#endif /* sCAL */
+
+#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED)
+/* An internal API to validate the format of a floating point number.
+ * The result is the index of the next character. If the number is
+ * not valid it will be the index of a character in the supposed number.
+ *
+ * The format of a number is defined in the PNG extensions specification
+ * and this API is strictly conformant to that spec, not anyone elses!
+ *
+ * The format as a regular expression is:
+ *
+ * [+-]?[0-9]+.?([Ee][+-]?[0-9]+)?
+ *
+ * or:
+ *
+ * [+-]?.[0-9]+(.[0-9]+)?([Ee][+-]?[0-9]+)?
+ *
+ * The complexity is that either integer or fraction must be present and the
+ * fraction is permitted to have no digits only if the integer is present.
+ *
+ * NOTE: The dangling E problem.
+ * There is a PNG valid floating point number in the following:
+ *
+ * PNG floating point numbers are not greedy.
+ *
+ * Working this out requires *TWO* character lookahead (because of the
+ * sign), the parser does not do this - it will fail at the 'r' - this
+ * doesn't matter for PNG sCAL chunk values, but it requires more care
+ * if the value were ever to be embedded in something more complex. Use
+ * ANSI-C strtod if you need the lookahead.
+ */
+/* State table for the parser. */
+#define PNG_FP_INTEGER 0 /* before or in integer */
+#define PNG_FP_FRACTION 1 /* before or in fraction */
+#define PNG_FP_EXPONENT 2 /* before or in exponent */
+#define PNG_FP_STATE 3 /* mask for the above */
+#define PNG_FP_SAW_SIGN 4 /* Saw +/- in current state */
+#define PNG_FP_SAW_DIGIT 8 /* Saw a digit in current state */
+#define PNG_FP_SAW_DOT 16 /* Saw a dot in current state */
+#define PNG_FP_SAW_E 32 /* Saw an E (or e) in current state */
+#define PNG_FP_SAW_ANY 60 /* Saw any of the above 4 */
+
+/* These three values don't affect the parser. They are set but not used.
+ */
+#define PNG_FP_WAS_VALID 64 /* Preceding substring is a valid fp number */
+#define PNG_FP_NEGATIVE 128 /* A negative number, including "-0" */
+#define PNG_FP_NONZERO 256 /* A non-zero value */
+#define PNG_FP_STICKY 448 /* The above three flags */
+
+/* This is available for the caller to store in 'state' if required. Do not
+ * call the parser after setting it (the parser sometimes clears it.)
+ */
+#define PNG_FP_INVALID 512 /* Available for callers as a distinct value */
+
+/* Result codes for the parser (boolean - true meants ok, false means
+ * not ok yet.)
+ */
+#define PNG_FP_MAYBE 0 /* The number may be valid in the future */
+#define PNG_FP_OK 1 /* The number is valid */
+
+/* Tests on the sticky non-zero and negative flags. To pass these checks
+ * the state must also indicate that the whole number is valid - this is
+ * achieved by testing PNG_FP_SAW_DIGIT (see the implementation for why this
+ * is equivalent to PNG_FP_OK above.)
+ */
+#define PNG_FP_NZ_MASK (PNG_FP_SAW_DIGIT | PNG_FP_NEGATIVE | PNG_FP_NONZERO)
+ /* NZ_MASK: the string is valid and a non-zero negative value */
+#define PNG_FP_Z_MASK (PNG_FP_SAW_DIGIT | PNG_FP_NONZERO)
+ /* Z MASK: the string is valid and a non-zero value. */
+ /* PNG_FP_SAW_DIGIT: the string is valid. */
+#define PNG_FP_IS_ZERO(state) (((state) & PNG_FP_Z_MASK) == PNG_FP_SAW_DIGIT)
+#define PNG_FP_IS_POSITIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_Z_MASK)
+#define PNG_FP_IS_NEGATIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_NZ_MASK)
+
+/* The actual parser. This can be called repeatedly. It updates
+ * the index into the string and the state variable (which must
+ * be initialized to 0). It returns a result code, as above. There
+ * is no point calling the parser any more if it fails to advance to
+ * the end of the string - it is stuck on an invalid character (or
+ * terminated by '\0').
+ *
+ * Note that the pointer will consume an E or even an E+ and then leave
+ * a 'maybe' state even though a preceding integer.fraction is valid.
+ * The PNG_FP_WAS_VALID flag indicates that a preceding substring was
+ * a valid number. It's possible to recover from this by calling
+ * the parser again (from the start, with state 0) but with a string
+ * that omits the last character (i.e. set the size to the index of
+ * the problem character.) This has not been tested within libpng.
+ */
+PNG_INTERNAL_FUNCTION(int,png_check_fp_number,(png_const_charp string,
+ png_size_t size, int *statep, png_size_tp whereami),PNG_EMPTY);
+
+/* This is the same but it checks a complete string and returns true
+ * only if it just contains a floating point number. As of 1.5.4 this
+ * function also returns the state at the end of parsing the number if
+ * it was valid (otherwise it returns 0.) This can be used for testing
+ * for negative or zero values using the sticky flag.
+ */
+PNG_INTERNAL_FUNCTION(int,png_check_fp_string,(png_const_charp string,
+ png_size_t size),PNG_EMPTY);
+#endif /* pCAL || sCAL */
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) ||\
+ defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED)
+/* Added at libpng version 1.5.0 */
+/* This is a utility to provide a*times/div (rounded) and indicate
+ * if there is an overflow. The result is a boolean - false (0)
+ * for overflow, true (1) if no overflow, in which case *res
+ * holds the result.
+ */
+PNG_INTERNAL_FUNCTION(int,png_muldiv,(png_fixed_point_p res, png_fixed_point a,
+ png_int_32 multiplied_by, png_int_32 divided_by),PNG_EMPTY);
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)
+/* Same deal, but issue a warning on overflow and return 0. */
+PNG_INTERNAL_FUNCTION(png_fixed_point,png_muldiv_warn,
+ (png_const_structrp png_ptr, png_fixed_point a, png_int_32 multiplied_by,
+ png_int_32 divided_by),PNG_EMPTY);
+#endif
+
+#ifdef PNG_GAMMA_SUPPORTED
+/* Calculate a reciprocal - used for gamma values. This returns
+ * 0 if the argument is 0 in order to maintain an undefined value;
+ * there are no warnings.
+ */
+PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal,(png_fixed_point a),
+ PNG_EMPTY);
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* The same but gives a reciprocal of the product of two fixed point
+ * values. Accuracy is suitable for gamma calculations but this is
+ * not exact - use png_muldiv for that. Only required at present on read.
+ */
+PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal2,(png_fixed_point a,
+ png_fixed_point b),PNG_EMPTY);
+#endif
+
+/* Return true if the gamma value is significantly different from 1.0 */
+PNG_INTERNAL_FUNCTION(int,png_gamma_significant,(png_fixed_point gamma_value),
+ PNG_EMPTY);
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* Internal fixed point gamma correction. These APIs are called as
+ * required to convert single values - they don't need to be fast,
+ * they are not used when processing image pixel values.
+ *
+ * While the input is an 'unsigned' value it must actually be the
+ * correct bit value - 0..255 or 0..65535 as required.
+ */
+PNG_INTERNAL_FUNCTION(png_uint_16,png_gamma_correct,(png_structrp png_ptr,
+ unsigned int value, png_fixed_point gamma_value),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(png_uint_16,png_gamma_16bit_correct,(unsigned int value,
+ png_fixed_point gamma_value),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(png_byte,png_gamma_8bit_correct,(unsigned int value,
+ png_fixed_point gamma_value),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_destroy_gamma_table,(png_structrp png_ptr),
+ PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_build_gamma_table,(png_structrp png_ptr,
+ int bit_depth),PNG_EMPTY);
+#endif
+
+/* SIMPLIFIED READ/WRITE SUPPORT */
+#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
+ defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
+/* The internal structure that png_image::opaque points to. */
+typedef struct png_control
+{
+ png_structp png_ptr;
+ png_infop info_ptr;
+ png_voidp error_buf; /* Always a jmp_buf at present. */
+
+ png_const_bytep memory; /* Memory buffer. */
+ png_size_t size; /* Size of the memory buffer. */
+
+ unsigned int for_write :1; /* Otherwise it is a read structure */
+ unsigned int owned_file :1; /* We own the file in io_ptr */
+} png_control;
+
+/* Return the pointer to the jmp_buf from a png_control: necessary because C
+ * does not reveal the type of the elements of jmp_buf.
+ */
+#ifdef __cplusplus
+# define png_control_jmp_buf(pc) (((jmp_buf*)((pc)->error_buf))[0])
+#else
+# define png_control_jmp_buf(pc) ((pc)->error_buf)
+#endif
+
+/* Utility to safely execute a piece of libpng code catching and logging any
+ * errors that might occur. Returns true on success, false on failure (either
+ * of the function or as a result of a png_error.)
+ */
+PNG_INTERNAL_FUNCTION(void,png_safe_error,(png_structp png_ptr,
+ png_const_charp error_message),PNG_NORETURN);
+
+#ifdef PNG_WARNINGS_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_safe_warning,(png_structp png_ptr,
+ png_const_charp warning_message),PNG_EMPTY);
+#else
+# define png_safe_warning 0/*dummy argument*/
+#endif
+
+PNG_INTERNAL_FUNCTION(int,png_safe_execute,(png_imagep image,
+ int (*function)(png_voidp), png_voidp arg),PNG_EMPTY);
+
+/* Utility to log an error; this also cleans up the png_image; the function
+ * always returns 0 (false).
+ */
+PNG_INTERNAL_FUNCTION(int,png_image_error,(png_imagep image,
+ png_const_charp error_message),PNG_EMPTY);
+
+#ifndef PNG_SIMPLIFIED_READ_SUPPORTED
+/* png_image_free is used by the write code but not exported */
+PNG_INTERNAL_FUNCTION(void, png_image_free, (png_imagep image), PNG_EMPTY);
+#endif /* !SIMPLIFIED_READ */
+
+#endif /* SIMPLIFIED READ/WRITE */
+
+/* These are initialization functions for hardware specific PNG filter
+ * optimizations; list these here then select the appropriate one at compile
+ * time using the macro PNG_FILTER_OPTIMIZATIONS. If the macro is not defined
+ * the generic code is used.
+ */
+#ifdef PNG_FILTER_OPTIMIZATIONS
+PNG_INTERNAL_FUNCTION(void, PNG_FILTER_OPTIMIZATIONS, (png_structp png_ptr,
+ unsigned int bpp), PNG_EMPTY);
+ /* Just declare the optimization that will be used */
+#else
+ /* List *all* the possible optimizations here - this branch is required if
+ * the builder of libpng passes the definition of PNG_FILTER_OPTIMIZATIONS in
+ * CFLAGS in place of CPPFLAGS *and* uses symbol prefixing.
+ */
+PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon,
+ (png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
+#endif
+
+/* Maintainer: Put new private prototypes here ^ */
+
+#include "pngdebug.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PNG_VERSION_INFO_ONLY */
+#endif /* PNGPRIV_H */
diff --git a/core/src/fxcodec/fx_lpng/lpng_v163/pngstruct.h b/core/src/fxcodec/fx_lpng/lpng_v163/pngstruct.h
new file mode 100644
index 0000000..2694705
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/lpng_v163/pngstruct.h
@@ -0,0 +1,489 @@
+
+/* pngstruct.h - header file for PNG reference library
+ *
+ * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * Last changed in libpng 1.6.1 [March 28, 2013]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* The structure that holds the information to read and write PNG files.
+ * The only people who need to care about what is inside of this are the
+ * people who will be modifying the library for their own special needs.
+ * It should NOT be accessed directly by an application.
+ */
+
+#ifndef PNGSTRUCT_H
+#define PNGSTRUCT_H
+/* zlib.h defines the structure z_stream, an instance of which is included
+ * in this structure and is required for decompressing the LZ compressed
+ * data in PNG files.
+ */
+#ifndef ZLIB_CONST
+ /* We must ensure that zlib uses 'const' in declarations. */
+# define ZLIB_CONST
+#endif
+#include "../../fx_zlib/include/fx_zlib.h"
+#ifdef const
+ /* zlib.h sometimes #defines const to nothing, undo this. */
+# undef const
+#endif
+
+/* zlib.h has mediocre z_const use before 1.2.6, this stuff is for compatibility
+ * with older builds.
+ */
+#if ZLIB_VERNUM < 0x1260
+# define PNGZ_MSG_CAST(s) png_constcast(char*,s)
+# define PNGZ_INPUT_CAST(b) png_constcast(png_bytep,b)
+#else
+# define PNGZ_MSG_CAST(s) (s)
+# define PNGZ_INPUT_CAST(b) (b)
+#endif
+
+/* zlib.h declares a magic type 'uInt' that limits the amount of data that zlib
+ * can handle at once. This type need be no larger than 16 bits (so maximum of
+ * 65535), this define allows us to discover how big it is, but limited by the
+ * maximuum for png_size_t. The value can be overriden in a library build
+ * (pngusr.h, or set it in CPPFLAGS) and it works to set it to a considerably
+ * lower value (e.g. 255 works). A lower value may help memory usage (slightly)
+ * and may even improve performance on some systems (and degrade it on others.)
+ */
+#ifndef ZLIB_IO_MAX
+# define ZLIB_IO_MAX ((uInt)-1)
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED
+/* The type of a compression buffer list used by the write code. */
+typedef struct png_compression_buffer
+{
+ struct png_compression_buffer *next;
+ png_byte output[1]; /* actually zbuf_size */
+} png_compression_buffer, *png_compression_bufferp;
+
+#define PNG_COMPRESSION_BUFFER_SIZE(pp)\
+ (offsetof(png_compression_buffer, output) + (pp)->zbuffer_size)
+#endif
+
+/* Colorspace support; structures used in png_struct, png_info and in internal
+ * functions to hold and communicate information about the color space.
+ *
+ * PNG_COLORSPACE_SUPPORTED is only required if the application will perform
+ * colorspace corrections, otherwise all the colorspace information can be
+ * skipped and the size of libpng can be reduced (significantly) by compiling
+ * out the colorspace support.
+ */
+#ifdef PNG_COLORSPACE_SUPPORTED
+/* The chromaticities of the red, green and blue colorants and the chromaticity
+ * of the corresponding white point (i.e. of rgb(1.0,1.0,1.0)).
+ */
+typedef struct png_xy
+{
+ png_fixed_point redx, redy;
+ png_fixed_point greenx, greeny;
+ png_fixed_point bluex, bluey;
+ png_fixed_point whitex, whitey;
+} png_xy;
+
+/* The same data as above but encoded as CIE XYZ values. When this data comes
+ * from chromaticities the sum of the Y values is assumed to be 1.0
+ */
+typedef struct png_XYZ
+{
+ png_fixed_point red_X, red_Y, red_Z;
+ png_fixed_point green_X, green_Y, green_Z;
+ png_fixed_point blue_X, blue_Y, blue_Z;
+} png_XYZ;
+#endif /* COLORSPACE */
+
+#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
+/* A colorspace is all the above plus, potentially, profile information,
+ * however at present libpng does not use the profile internally so it is only
+ * stored in the png_info struct (if iCCP is supported.) The rendering intent
+ * is retained here and is checked.
+ *
+ * The file gamma encoding information is also stored here and gamma correction
+ * is done by libpng, whereas color correction must currently be done by the
+ * application.
+ */
+typedef struct png_colorspace
+{
+#ifdef PNG_GAMMA_SUPPORTED
+ png_fixed_point gamma; /* File gamma */
+#endif
+
+#ifdef PNG_COLORSPACE_SUPPORTED
+ png_xy end_points_xy; /* End points as chromaticities */
+ png_XYZ end_points_XYZ; /* End points as CIE XYZ colorant values */
+ png_uint_16 rendering_intent; /* Rendering intent of a profile */
+#endif
+
+ /* Flags are always defined to simplify the code. */
+ png_uint_16 flags; /* As defined below */
+} png_colorspace, * PNG_RESTRICT png_colorspacerp;
+
+typedef const png_colorspace * PNG_RESTRICT png_const_colorspacerp;
+
+/* General flags for the 'flags' field */
+#define PNG_COLORSPACE_HAVE_GAMMA 0x0001
+#define PNG_COLORSPACE_HAVE_ENDPOINTS 0x0002
+#define PNG_COLORSPACE_HAVE_INTENT 0x0004
+#define PNG_COLORSPACE_FROM_gAMA 0x0008
+#define PNG_COLORSPACE_FROM_cHRM 0x0010
+#define PNG_COLORSPACE_FROM_sRGB 0x0020
+#define PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB 0x0040
+#define PNG_COLORSPACE_MATCHES_sRGB 0x0080 /* exact match on profile */
+#define PNG_COLORSPACE_INVALID 0x8000
+#define PNG_COLORSPACE_CANCEL(flags) (0xffff ^ (flags))
+#endif /* COLORSPACE || GAMMA */
+
+struct png_struct_def
+{
+#ifdef PNG_SETJMP_SUPPORTED
+ jmp_buf jmp_buf_local; /* New name in 1.6.0 for jmp_buf in png_struct */
+ png_longjmp_ptr longjmp_fn;/* setjmp non-local goto function. */
+ jmp_buf *jmp_buf_ptr; /* passed to longjmp_fn */
+ size_t jmp_buf_size; /* size of the above, if allocated */
+#endif
+ png_error_ptr error_fn; /* function for printing errors and aborting */
+#ifdef PNG_WARNINGS_SUPPORTED
+ png_error_ptr warning_fn; /* function for printing warnings */
+#endif
+ png_voidp error_ptr; /* user supplied struct for error functions */
+ png_rw_ptr write_data_fn; /* function for writing output data */
+ png_rw_ptr read_data_fn; /* function for reading input data */
+ png_voidp io_ptr; /* ptr to application struct for I/O functions */
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ png_user_transform_ptr read_user_transform_fn; /* user read transform */
+#endif
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ png_user_transform_ptr write_user_transform_fn; /* user write transform */
+#endif
+
+/* These were added in libpng-1.0.2 */
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+ png_voidp user_transform_ptr; /* user supplied struct for user transform */
+ png_byte user_transform_depth; /* bit depth of user transformed pixels */
+ png_byte user_transform_channels; /* channels in user transformed pixels */
+#endif
+#endif
+
+ png_uint_32 mode; /* tells us where we are in the PNG file */
+ png_uint_32 flags; /* flags indicating various things to libpng */
+ png_uint_32 transformations; /* which transformations to perform */
+
+ png_uint_32 zowner; /* ID (chunk type) of zstream owner, 0 if none */
+ z_stream zstream; /* decompression structure */
+
+#ifdef PNG_WRITE_SUPPORTED
+ png_compression_bufferp zbuffer_list; /* Created on demand during write */
+ uInt zbuffer_size; /* size of the actual buffer */
+
+ int zlib_level; /* holds zlib compression level */
+ int zlib_method; /* holds zlib compression method */
+ int zlib_window_bits; /* holds zlib compression window bits */
+ int zlib_mem_level; /* holds zlib compression memory level */
+ int zlib_strategy; /* holds zlib compression strategy */
+#endif
+/* Added at libpng 1.5.4 */
+#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+ int zlib_text_level; /* holds zlib compression level */
+ int zlib_text_method; /* holds zlib compression method */
+ int zlib_text_window_bits; /* holds zlib compression window bits */
+ int zlib_text_mem_level; /* holds zlib compression memory level */
+ int zlib_text_strategy; /* holds zlib compression strategy */
+#endif
+/* End of material added at libpng 1.5.4 */
+/* Added at libpng 1.6.0 */
+#ifdef PNG_WRITE_SUPPORTED
+ int zlib_set_level; /* Actual values set into the zstream on write */
+ int zlib_set_method;
+ int zlib_set_window_bits;
+ int zlib_set_mem_level;
+ int zlib_set_strategy;
+#endif
+
+ png_uint_32 width; /* width of image in pixels */
+ png_uint_32 height; /* height of image in pixels */
+ png_uint_32 num_rows; /* number of rows in current pass */
+ png_uint_32 usr_width; /* width of row at start of write */
+ png_size_t rowbytes; /* size of row in bytes */
+ png_uint_32 iwidth; /* width of current interlaced row in pixels */
+ png_uint_32 row_number; /* current row in interlace pass */
+ png_uint_32 chunk_name; /* PNG_CHUNK() id of current chunk */
+ png_bytep prev_row; /* buffer to save previous (unfiltered) row.
+ * This is a pointer into big_prev_row
+ */
+ png_bytep row_buf; /* buffer to save current (unfiltered) row.
+ * This is a pointer into big_row_buf
+ */
+#ifdef PNG_WRITE_SUPPORTED
+ png_bytep sub_row; /* buffer to save "sub" row when filtering */
+ png_bytep up_row; /* buffer to save "up" row when filtering */
+ png_bytep avg_row; /* buffer to save "avg" row when filtering */
+ png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */
+#endif
+ png_size_t info_rowbytes; /* Added in 1.5.4: cache of updated row bytes */
+
+ png_uint_32 idat_size; /* current IDAT size for read */
+ png_uint_32 crc; /* current chunk CRC value */
+ png_colorp palette; /* palette from the input file */
+ png_uint_16 num_palette; /* number of color entries in palette */
+
+/* Added at libpng-1.5.10 */
+#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ int num_palette_max; /* maximum palette index found in IDAT */
+#endif
+
+ png_uint_16 num_trans; /* number of transparency values */
+ png_byte compression; /* file compression type (always 0) */
+ png_byte filter; /* file filter type (always 0) */
+ png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+ png_byte pass; /* current interlace pass (0 - 6) */
+ png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */
+ png_byte color_type; /* color type of file */
+ png_byte bit_depth; /* bit depth of file */
+ png_byte usr_bit_depth; /* bit depth of users row: write only */
+ png_byte pixel_depth; /* number of bits per pixel */
+ png_byte channels; /* number of channels in file */
+#ifdef PNG_WRITE_SUPPORTED
+ png_byte usr_channels; /* channels at start of write: write only */
+#endif
+ png_byte sig_bytes; /* magic bytes read/written from start of file */
+ png_byte maximum_pixel_depth;
+ /* pixel depth used for the row buffers */
+ png_byte transformed_pixel_depth;
+ /* pixel depth after read/write transforms */
+#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+ png_uint_16 filler; /* filler bytes for pixel expansion */
+#endif
+
+#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED)
+ png_byte background_gamma_type;
+ png_fixed_point background_gamma;
+ png_color_16 background; /* background color in screen gamma space */
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ png_color_16 background_1; /* background normalized to gamma 1.0 */
+#endif
+#endif /* PNG_bKGD_SUPPORTED */
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+ png_flush_ptr output_flush_fn; /* Function for flushing output */
+ png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */
+ png_uint_32 flush_rows; /* number of rows written since last flush */
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ int gamma_shift; /* number of "insignificant" bits in 16-bit gamma */
+ png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */
+
+ png_bytep gamma_table; /* gamma table for 8-bit depth files */
+ png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ png_bytep gamma_from_1; /* converts from 1.0 to screen */
+ png_bytep gamma_to_1; /* converts from file to 1.0 */
+ png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
+ png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
+ png_color_8 sig_bit; /* significant bits in each available channel */
+#endif
+
+#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
+ png_color_8 shift; /* shift for significant bit tranformation */
+#endif
+
+#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
+ || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ png_bytep trans_alpha; /* alpha values for paletted files */
+ png_color_16 trans_color; /* transparent color for non-paletted files */
+#endif
+
+ png_read_status_ptr read_row_fn; /* called after each row is decoded */
+ png_write_status_ptr write_row_fn; /* called after each row is encoded */
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+ png_progressive_info_ptr info_fn; /* called after header data fully read */
+ png_progressive_row_ptr row_fn; /* called after a prog. row is decoded */
+ png_progressive_end_ptr end_fn; /* called after image is complete */
+ png_bytep save_buffer_ptr; /* current location in save_buffer */
+ png_bytep save_buffer; /* buffer for previously read data */
+ png_bytep current_buffer_ptr; /* current location in current_buffer */
+ png_bytep current_buffer; /* buffer for recently used data */
+ png_uint_32 push_length; /* size of current input chunk */
+ png_uint_32 skip_length; /* bytes to skip in input data */
+ png_size_t save_buffer_size; /* amount of data now in save_buffer */
+ png_size_t save_buffer_max; /* total size of save_buffer */
+ png_size_t buffer_size; /* total amount of available input data */
+ png_size_t current_buffer_size; /* amount of data now in current_buffer */
+ int process_mode; /* what push library is currently doing */
+ int cur_palette; /* current push library palette index */
+
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
+/* For the Borland special 64K segment handler */
+ png_bytepp offset_table_ptr;
+ png_bytep offset_table;
+ png_uint_16 offset_table_number;
+ png_uint_16 offset_table_count;
+ png_uint_16 offset_table_count_free;
+#endif
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+ png_bytep palette_lookup; /* lookup table for quantizing */
+ png_bytep quantize_index; /* index translation for palette files */
+#endif
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ png_byte heuristic_method; /* heuristic for row filter selection */
+ png_byte num_prev_filters; /* number of weights for previous rows */
+ png_bytep prev_filters; /* filter type(s) of previous row(s) */
+ png_uint_16p filter_weights; /* weight(s) for previous line(s) */
+ png_uint_16p inv_filter_weights; /* 1/weight(s) for previous line(s) */
+ png_uint_16p filter_costs; /* relative filter calculation cost */
+ png_uint_16p inv_filter_costs; /* 1/relative filter calculation cost */
+#endif
+
+ /* Options */
+#ifdef PNG_SET_OPTION_SUPPORTED
+ png_byte options; /* On/off state (up to 4 options) */
+#endif
+
+#if PNG_LIBPNG_VER < 10700
+/* To do: remove this from libpng-1.7 */
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ char time_buffer[29]; /* String to hold RFC 1123 time text */
+#endif
+#endif
+
+/* New members added in libpng-1.0.6 */
+
+ png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+ png_voidp user_chunk_ptr;
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+ png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
+#endif
+#endif
+
+#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+ int unknown_default; /* As PNG_HANDLE_* */
+ unsigned int num_chunk_list; /* Number of entries in the list */
+ png_bytep chunk_list; /* List of png_byte[5]; the textual chunk name
+ * followed by a PNG_HANDLE_* byte */
+#endif
+
+/* New members added in libpng-1.0.3 */
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ png_byte rgb_to_gray_status;
+ /* Added in libpng 1.5.5 to record setting of coefficients: */
+ png_byte rgb_to_gray_coefficients_set;
+ /* These were changed from png_byte in libpng-1.0.6 */
+ png_uint_16 rgb_to_gray_red_coeff;
+ png_uint_16 rgb_to_gray_green_coeff;
+ /* deleted in 1.5.5: rgb_to_gray_blue_coeff; */
+#endif
+
+/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
+/* Changed from png_byte to png_uint_32 at version 1.2.0 */
+ png_uint_32 mng_features_permitted;
+#endif
+
+/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ png_byte filter_type;
+#endif
+
+/* New members added in libpng-1.2.0 */
+
+/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_voidp mem_ptr; /* user supplied struct for mem functions */
+ png_malloc_ptr malloc_fn; /* function for allocating memory */
+ png_free_ptr free_fn; /* function for freeing memory */
+#endif
+
+/* New member added in libpng-1.0.13 and 1.2.0 */
+ png_bytep big_row_buf; /* buffer to save current (unfiltered) row */
+
+#ifdef PNG_READ_QUANTIZE_SUPPORTED
+/* The following three members were added at version 1.0.14 and 1.2.4 */
+ png_bytep quantize_sort; /* working sort array */
+ png_bytep index_to_palette; /* where the original index currently is
+ in the palette */
+ png_bytep palette_to_index; /* which original index points to this
+ palette color */
+#endif
+
+/* New members added in libpng-1.0.16 and 1.2.6 */
+ png_byte compression_type;
+
+#ifdef PNG_USER_LIMITS_SUPPORTED
+ png_uint_32 user_width_max;
+ png_uint_32 user_height_max;
+
+ /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
+ * chunks that can be stored (0 means unlimited).
+ */
+ png_uint_32 user_chunk_cache_max;
+
+ /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk
+ * can occupy when decompressed. 0 means unlimited.
+ */
+ png_alloc_size_t user_chunk_malloc_max;
+#endif
+
+/* New member added in libpng-1.0.25 and 1.2.17 */
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+ /* Temporary storage for unknown chunk that the library doesn't recognize,
+ * used while reading the chunk.
+ */
+ png_unknown_chunk unknown_chunk;
+#endif
+
+/* New member added in libpng-1.2.26 */
+ png_size_t old_big_row_buf_size;
+
+#ifdef PNG_READ_SUPPORTED
+/* New member added in libpng-1.2.30 */
+ png_bytep read_buffer; /* buffer for reading chunk data */
+ png_alloc_size_t read_buffer_size; /* current size of the buffer */
+#endif
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+ uInt IDAT_read_size; /* limit on read buffer size for IDAT */
+#endif
+
+#ifdef PNG_IO_STATE_SUPPORTED
+/* New member added in libpng-1.4.0 */
+ png_uint_32 io_state;
+#endif
+
+/* New member added in libpng-1.5.6 */
+ png_bytep big_prev_row;
+
+/* New member added in libpng-1.5.7 */
+ void (*read_filter[PNG_FILTER_VALUE_LAST-1])(png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row);
+
+#ifdef PNG_READ_SUPPORTED
+#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
+ png_colorspace colorspace;
+#endif
+#endif
+};
+#endif /* PNGSTRUCT_H */
diff --git a/core/src/fxcodec/fx_lpng/src/fx_png.c b/core/src/fxcodec/fx_lpng/src/fx_png.c
new file mode 100644
index 0000000..7b65826
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_png.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_png.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngerror.c b/core/src/fxcodec/fx_lpng/src/fx_pngerror.c
new file mode 100644
index 0000000..7581b99
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngerror.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngerror.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngget.c b/core/src/fxcodec/fx_lpng/src/fx_pngget.c
new file mode 100644
index 0000000..cc8dc4e
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngget.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngget.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngmem.c b/core/src/fxcodec/fx_lpng/src/fx_pngmem.c
new file mode 100644
index 0000000..9892408
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngmem.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngmem.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngpread.c b/core/src/fxcodec/fx_lpng/src/fx_pngpread.c
new file mode 100644
index 0000000..8d53be2
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngpread.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngpread.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngread.c b/core/src/fxcodec/fx_lpng/src/fx_pngread.c
new file mode 100644
index 0000000..c612bd5
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngread.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngread.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngrio.c b/core/src/fxcodec/fx_lpng/src/fx_pngrio.c
new file mode 100644
index 0000000..d324a8e
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngrio.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngrio.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngrtran.c b/core/src/fxcodec/fx_lpng/src/fx_pngrtran.c
new file mode 100644
index 0000000..bec380d
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngrtran.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngrtran.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngrutil.c b/core/src/fxcodec/fx_lpng/src/fx_pngrutil.c
new file mode 100644
index 0000000..a3da355
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngrutil.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngrutil.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngset.c b/core/src/fxcodec/fx_lpng/src/fx_pngset.c
new file mode 100644
index 0000000..76a72223
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngset.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngset.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngtrans.c b/core/src/fxcodec/fx_lpng/src/fx_pngtrans.c
new file mode 100644
index 0000000..eac49bf
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngtrans.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngtrans.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngwio.c b/core/src/fxcodec/fx_lpng/src/fx_pngwio.c
new file mode 100644
index 0000000..3fb21e5
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngwio.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngwio.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngwrite.c b/core/src/fxcodec/fx_lpng/src/fx_pngwrite.c
new file mode 100644
index 0000000..4434fd0
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngwrite.c
@@ -0,0 +1,10 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+#include "../lpng_v163/fx_pngwrite.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngwtran.c b/core/src/fxcodec/fx_lpng/src/fx_pngwtran.c
new file mode 100644
index 0000000..8a095d3
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngwtran.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngwtran.c"
diff --git a/core/src/fxcodec/fx_lpng/src/fx_pngwutil.c b/core/src/fxcodec/fx_lpng/src/fx_pngwutil.c
new file mode 100644
index 0000000..b07fb40
--- /dev/null
+++ b/core/src/fxcodec/fx_lpng/src/fx_pngwutil.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../lpng_v163/fx_pngwutil.c"
diff --git a/core/src/fxcodec/fx_tiff/include/fx_tiffiop.h b/core/src/fxcodec/fx_tiff/include/fx_tiffiop.h
new file mode 100644
index 0000000..8c78903
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/include/fx_tiffiop.h
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tiffiop.h"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_aux.c b/core/src/fxcodec/fx_tiff/src/fx_tif_aux.c
new file mode 100644
index 0000000..55d4f65
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_aux.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_aux.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_close.c b/core/src/fxcodec/fx_tiff/src/fx_tif_close.c
new file mode 100644
index 0000000..3645bd2
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_close.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_close.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_codec.c b/core/src/fxcodec/fx_tiff/src/fx_tif_codec.c
new file mode 100644
index 0000000..183622f
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_codec.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_codec.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_color.c b/core/src/fxcodec/fx_tiff/src/fx_tif_color.c
new file mode 100644
index 0000000..ce0f6fb
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_color.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_color.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_compress.c b/core/src/fxcodec/fx_tiff/src/fx_tif_compress.c
new file mode 100644
index 0000000..cdbf26c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_compress.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_compress.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_dir.c b/core/src/fxcodec/fx_tiff/src/fx_tif_dir.c
new file mode 100644
index 0000000..2dc94bb
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_dir.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_dir.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_dirinfo.c b/core/src/fxcodec/fx_tiff/src/fx_tif_dirinfo.c
new file mode 100644
index 0000000..5481733
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_dirinfo.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_dirinfo.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_dirread.c b/core/src/fxcodec/fx_tiff/src/fx_tif_dirread.c
new file mode 100644
index 0000000..ef57dfd
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_dirread.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_dirread.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_dirwrite.c b/core/src/fxcodec/fx_tiff/src/fx_tif_dirwrite.c
new file mode 100644
index 0000000..daee77b
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_dirwrite.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_dirwrite.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_dumpmode.c b/core/src/fxcodec/fx_tiff/src/fx_tif_dumpmode.c
new file mode 100644
index 0000000..1ece3b8
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_dumpmode.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_dumpmode.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_error.c b/core/src/fxcodec/fx_tiff/src/fx_tif_error.c
new file mode 100644
index 0000000..8693e9d
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_error.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_error.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_extension.c b/core/src/fxcodec/fx_tiff/src/fx_tif_extension.c
new file mode 100644
index 0000000..3b92492
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_extension.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_extension.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_fax3.c b/core/src/fxcodec/fx_tiff/src/fx_tif_fax3.c
new file mode 100644
index 0000000..68d26de
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_fax3.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_fax3.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_fax3sm.c b/core/src/fxcodec/fx_tiff/src/fx_tif_fax3sm.c
new file mode 100644
index 0000000..aa633e7
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_fax3sm.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_fax3sm.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_flush.c b/core/src/fxcodec/fx_tiff/src/fx_tif_flush.c
new file mode 100644
index 0000000..40884c8
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_flush.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_flush.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_getimage.c b/core/src/fxcodec/fx_tiff/src/fx_tif_getimage.c
new file mode 100644
index 0000000..15c8ee4
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_getimage.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_getimage.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_jpeg.c b/core/src/fxcodec/fx_tiff/src/fx_tif_jpeg.c
new file mode 100644
index 0000000..03ee51f
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_jpeg.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_jpeg.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_luv.c b/core/src/fxcodec/fx_tiff/src/fx_tif_luv.c
new file mode 100644
index 0000000..08768e7
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_luv.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_luv.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_lzw.c b/core/src/fxcodec/fx_tiff/src/fx_tif_lzw.c
new file mode 100644
index 0000000..8323113
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_lzw.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_lzw.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_next.c b/core/src/fxcodec/fx_tiff/src/fx_tif_next.c
new file mode 100644
index 0000000..a13df45
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_next.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_next.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_ojpeg.c b/core/src/fxcodec/fx_tiff/src/fx_tif_ojpeg.c
new file mode 100644
index 0000000..fed1911
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_ojpeg.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_ojpeg.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_open.c b/core/src/fxcodec/fx_tiff/src/fx_tif_open.c
new file mode 100644
index 0000000..682ffe6
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_open.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_open.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_packbits.c b/core/src/fxcodec/fx_tiff/src/fx_tif_packbits.c
new file mode 100644
index 0000000..349930f
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_packbits.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_packbits.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_pixarlog.c b/core/src/fxcodec/fx_tiff/src/fx_tif_pixarlog.c
new file mode 100644
index 0000000..2812901
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_pixarlog.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_pixarlog.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_predict.c b/core/src/fxcodec/fx_tiff/src/fx_tif_predict.c
new file mode 100644
index 0000000..eab405a
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_predict.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_predict.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_print.c b/core/src/fxcodec/fx_tiff/src/fx_tif_print.c
new file mode 100644
index 0000000..9a16a92
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_print.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_print.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_read.c b/core/src/fxcodec/fx_tiff/src/fx_tif_read.c
new file mode 100644
index 0000000..64289bb
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_read.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_read.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_strip.c b/core/src/fxcodec/fx_tiff/src/fx_tif_strip.c
new file mode 100644
index 0000000..e642a4e
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_strip.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_strip.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_swab.c b/core/src/fxcodec/fx_tiff/src/fx_tif_swab.c
new file mode 100644
index 0000000..e9c6b10
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_swab.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_swab.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_thunder.c b/core/src/fxcodec/fx_tiff/src/fx_tif_thunder.c
new file mode 100644
index 0000000..80f523c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_thunder.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_thunder.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_tile.c b/core/src/fxcodec/fx_tiff/src/fx_tif_tile.c
new file mode 100644
index 0000000..49cd404
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_tile.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_tile.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_version.c b/core/src/fxcodec/fx_tiff/src/fx_tif_version.c
new file mode 100644
index 0000000..6d62e3c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_version.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_version.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_warning.c b/core/src/fxcodec/fx_tiff/src/fx_tif_warning.c
new file mode 100644
index 0000000..cb1921d
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_warning.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_warning.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_write.c b/core/src/fxcodec/fx_tiff/src/fx_tif_write.c
new file mode 100644
index 0000000..9ab43fa
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_write.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_write.c"
diff --git a/core/src/fxcodec/fx_tiff/src/fx_tif_zip.c b/core/src/fxcodec/fx_tiff/src/fx_tif_zip.c
new file mode 100644
index 0000000..8460a3f
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/src/fx_tif_zip.c
@@ -0,0 +1,7 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../tiff_v403/tif_zip.c"
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/t4.h b/core/src/fxcodec/fx_tiff/tiff_v403/t4.h
new file mode 100644
index 0000000..b908f54
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/t4.h
@@ -0,0 +1,292 @@
+/* $Id: t4.h,v 1.3 2010-03-10 18:56:48 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _T4_
+#define _T4_
+/*
+ * CCITT T.4 1D Huffman runlength codes and
+ * related definitions. Given the small sizes
+ * of these tables it does not seem
+ * worthwhile to make code & length 8 bits.
+ */
+typedef struct tableentry {
+ unsigned short length; /* bit length of g3 code */
+ unsigned short code; /* g3 code */
+ short runlen; /* run length in bits */
+} tableentry;
+
+#define EOL 0x001 /* EOL code value - 0000 0000 0000 1 */
+
+/* status values returned instead of a run length */
+#define G3CODE_EOL -1 /* NB: ACT_EOL - ACT_WRUNT */
+#define G3CODE_INVALID -2 /* NB: ACT_INVALID - ACT_WRUNT */
+#define G3CODE_EOF -3 /* end of input data */
+#define G3CODE_INCOMP -4 /* incomplete run code */
+
+/*
+ * Note that these tables are ordered such that the
+ * index into the table is known to be either the
+ * run length, or (run length / 64) + a fixed offset.
+ *
+ * NB: The G3CODE_INVALID entries are only used
+ * during state generation (see mkg3states.c).
+ */
+#ifdef G3CODES
+const tableentry TIFFFaxWhiteCodes[] = {
+ { 8, 0x35, 0 }, /* 0011 0101 */
+ { 6, 0x7, 1 }, /* 0001 11 */
+ { 4, 0x7, 2 }, /* 0111 */
+ { 4, 0x8, 3 }, /* 1000 */
+ { 4, 0xB, 4 }, /* 1011 */
+ { 4, 0xC, 5 }, /* 1100 */
+ { 4, 0xE, 6 }, /* 1110 */
+ { 4, 0xF, 7 }, /* 1111 */
+ { 5, 0x13, 8 }, /* 1001 1 */
+ { 5, 0x14, 9 }, /* 1010 0 */
+ { 5, 0x7, 10 }, /* 0011 1 */
+ { 5, 0x8, 11 }, /* 0100 0 */
+ { 6, 0x8, 12 }, /* 0010 00 */
+ { 6, 0x3, 13 }, /* 0000 11 */
+ { 6, 0x34, 14 }, /* 1101 00 */
+ { 6, 0x35, 15 }, /* 1101 01 */
+ { 6, 0x2A, 16 }, /* 1010 10 */
+ { 6, 0x2B, 17 }, /* 1010 11 */
+ { 7, 0x27, 18 }, /* 0100 111 */
+ { 7, 0xC, 19 }, /* 0001 100 */
+ { 7, 0x8, 20 }, /* 0001 000 */
+ { 7, 0x17, 21 }, /* 0010 111 */
+ { 7, 0x3, 22 }, /* 0000 011 */
+ { 7, 0x4, 23 }, /* 0000 100 */
+ { 7, 0x28, 24 }, /* 0101 000 */
+ { 7, 0x2B, 25 }, /* 0101 011 */
+ { 7, 0x13, 26 }, /* 0010 011 */
+ { 7, 0x24, 27 }, /* 0100 100 */
+ { 7, 0x18, 28 }, /* 0011 000 */
+ { 8, 0x2, 29 }, /* 0000 0010 */
+ { 8, 0x3, 30 }, /* 0000 0011 */
+ { 8, 0x1A, 31 }, /* 0001 1010 */
+ { 8, 0x1B, 32 }, /* 0001 1011 */
+ { 8, 0x12, 33 }, /* 0001 0010 */
+ { 8, 0x13, 34 }, /* 0001 0011 */
+ { 8, 0x14, 35 }, /* 0001 0100 */
+ { 8, 0x15, 36 }, /* 0001 0101 */
+ { 8, 0x16, 37 }, /* 0001 0110 */
+ { 8, 0x17, 38 }, /* 0001 0111 */
+ { 8, 0x28, 39 }, /* 0010 1000 */
+ { 8, 0x29, 40 }, /* 0010 1001 */
+ { 8, 0x2A, 41 }, /* 0010 1010 */
+ { 8, 0x2B, 42 }, /* 0010 1011 */
+ { 8, 0x2C, 43 }, /* 0010 1100 */
+ { 8, 0x2D, 44 }, /* 0010 1101 */
+ { 8, 0x4, 45 }, /* 0000 0100 */
+ { 8, 0x5, 46 }, /* 0000 0101 */
+ { 8, 0xA, 47 }, /* 0000 1010 */
+ { 8, 0xB, 48 }, /* 0000 1011 */
+ { 8, 0x52, 49 }, /* 0101 0010 */
+ { 8, 0x53, 50 }, /* 0101 0011 */
+ { 8, 0x54, 51 }, /* 0101 0100 */
+ { 8, 0x55, 52 }, /* 0101 0101 */
+ { 8, 0x24, 53 }, /* 0010 0100 */
+ { 8, 0x25, 54 }, /* 0010 0101 */
+ { 8, 0x58, 55 }, /* 0101 1000 */
+ { 8, 0x59, 56 }, /* 0101 1001 */
+ { 8, 0x5A, 57 }, /* 0101 1010 */
+ { 8, 0x5B, 58 }, /* 0101 1011 */
+ { 8, 0x4A, 59 }, /* 0100 1010 */
+ { 8, 0x4B, 60 }, /* 0100 1011 */
+ { 8, 0x32, 61 }, /* 0011 0010 */
+ { 8, 0x33, 62 }, /* 0011 0011 */
+ { 8, 0x34, 63 }, /* 0011 0100 */
+ { 5, 0x1B, 64 }, /* 1101 1 */
+ { 5, 0x12, 128 }, /* 1001 0 */
+ { 6, 0x17, 192 }, /* 0101 11 */
+ { 7, 0x37, 256 }, /* 0110 111 */
+ { 8, 0x36, 320 }, /* 0011 0110 */
+ { 8, 0x37, 384 }, /* 0011 0111 */
+ { 8, 0x64, 448 }, /* 0110 0100 */
+ { 8, 0x65, 512 }, /* 0110 0101 */
+ { 8, 0x68, 576 }, /* 0110 1000 */
+ { 8, 0x67, 640 }, /* 0110 0111 */
+ { 9, 0xCC, 704 }, /* 0110 0110 0 */
+ { 9, 0xCD, 768 }, /* 0110 0110 1 */
+ { 9, 0xD2, 832 }, /* 0110 1001 0 */
+ { 9, 0xD3, 896 }, /* 0110 1001 1 */
+ { 9, 0xD4, 960 }, /* 0110 1010 0 */
+ { 9, 0xD5, 1024 }, /* 0110 1010 1 */
+ { 9, 0xD6, 1088 }, /* 0110 1011 0 */
+ { 9, 0xD7, 1152 }, /* 0110 1011 1 */
+ { 9, 0xD8, 1216 }, /* 0110 1100 0 */
+ { 9, 0xD9, 1280 }, /* 0110 1100 1 */
+ { 9, 0xDA, 1344 }, /* 0110 1101 0 */
+ { 9, 0xDB, 1408 }, /* 0110 1101 1 */
+ { 9, 0x98, 1472 }, /* 0100 1100 0 */
+ { 9, 0x99, 1536 }, /* 0100 1100 1 */
+ { 9, 0x9A, 1600 }, /* 0100 1101 0 */
+ { 6, 0x18, 1664 }, /* 0110 00 */
+ { 9, 0x9B, 1728 }, /* 0100 1101 1 */
+ { 11, 0x8, 1792 }, /* 0000 0001 000 */
+ { 11, 0xC, 1856 }, /* 0000 0001 100 */
+ { 11, 0xD, 1920 }, /* 0000 0001 101 */
+ { 12, 0x12, 1984 }, /* 0000 0001 0010 */
+ { 12, 0x13, 2048 }, /* 0000 0001 0011 */
+ { 12, 0x14, 2112 }, /* 0000 0001 0100 */
+ { 12, 0x15, 2176 }, /* 0000 0001 0101 */
+ { 12, 0x16, 2240 }, /* 0000 0001 0110 */
+ { 12, 0x17, 2304 }, /* 0000 0001 0111 */
+ { 12, 0x1C, 2368 }, /* 0000 0001 1100 */
+ { 12, 0x1D, 2432 }, /* 0000 0001 1101 */
+ { 12, 0x1E, 2496 }, /* 0000 0001 1110 */
+ { 12, 0x1F, 2560 }, /* 0000 0001 1111 */
+ { 12, 0x1, G3CODE_EOL }, /* 0000 0000 0001 */
+ { 9, 0x1, G3CODE_INVALID }, /* 0000 0000 1 */
+ { 10, 0x1, G3CODE_INVALID }, /* 0000 0000 01 */
+ { 11, 0x1, G3CODE_INVALID }, /* 0000 0000 001 */
+ { 12, 0x0, G3CODE_INVALID }, /* 0000 0000 0000 */
+};
+
+const tableentry TIFFFaxBlackCodes[] = {
+ { 10, 0x37, 0 }, /* 0000 1101 11 */
+ { 3, 0x2, 1 }, /* 010 */
+ { 2, 0x3, 2 }, /* 11 */
+ { 2, 0x2, 3 }, /* 10 */
+ { 3, 0x3, 4 }, /* 011 */
+ { 4, 0x3, 5 }, /* 0011 */
+ { 4, 0x2, 6 }, /* 0010 */
+ { 5, 0x3, 7 }, /* 0001 1 */
+ { 6, 0x5, 8 }, /* 0001 01 */
+ { 6, 0x4, 9 }, /* 0001 00 */
+ { 7, 0x4, 10 }, /* 0000 100 */
+ { 7, 0x5, 11 }, /* 0000 101 */
+ { 7, 0x7, 12 }, /* 0000 111 */
+ { 8, 0x4, 13 }, /* 0000 0100 */
+ { 8, 0x7, 14 }, /* 0000 0111 */
+ { 9, 0x18, 15 }, /* 0000 1100 0 */
+ { 10, 0x17, 16 }, /* 0000 0101 11 */
+ { 10, 0x18, 17 }, /* 0000 0110 00 */
+ { 10, 0x8, 18 }, /* 0000 0010 00 */
+ { 11, 0x67, 19 }, /* 0000 1100 111 */
+ { 11, 0x68, 20 }, /* 0000 1101 000 */
+ { 11, 0x6C, 21 }, /* 0000 1101 100 */
+ { 11, 0x37, 22 }, /* 0000 0110 111 */
+ { 11, 0x28, 23 }, /* 0000 0101 000 */
+ { 11, 0x17, 24 }, /* 0000 0010 111 */
+ { 11, 0x18, 25 }, /* 0000 0011 000 */
+ { 12, 0xCA, 26 }, /* 0000 1100 1010 */
+ { 12, 0xCB, 27 }, /* 0000 1100 1011 */
+ { 12, 0xCC, 28 }, /* 0000 1100 1100 */
+ { 12, 0xCD, 29 }, /* 0000 1100 1101 */
+ { 12, 0x68, 30 }, /* 0000 0110 1000 */
+ { 12, 0x69, 31 }, /* 0000 0110 1001 */
+ { 12, 0x6A, 32 }, /* 0000 0110 1010 */
+ { 12, 0x6B, 33 }, /* 0000 0110 1011 */
+ { 12, 0xD2, 34 }, /* 0000 1101 0010 */
+ { 12, 0xD3, 35 }, /* 0000 1101 0011 */
+ { 12, 0xD4, 36 }, /* 0000 1101 0100 */
+ { 12, 0xD5, 37 }, /* 0000 1101 0101 */
+ { 12, 0xD6, 38 }, /* 0000 1101 0110 */
+ { 12, 0xD7, 39 }, /* 0000 1101 0111 */
+ { 12, 0x6C, 40 }, /* 0000 0110 1100 */
+ { 12, 0x6D, 41 }, /* 0000 0110 1101 */
+ { 12, 0xDA, 42 }, /* 0000 1101 1010 */
+ { 12, 0xDB, 43 }, /* 0000 1101 1011 */
+ { 12, 0x54, 44 }, /* 0000 0101 0100 */
+ { 12, 0x55, 45 }, /* 0000 0101 0101 */
+ { 12, 0x56, 46 }, /* 0000 0101 0110 */
+ { 12, 0x57, 47 }, /* 0000 0101 0111 */
+ { 12, 0x64, 48 }, /* 0000 0110 0100 */
+ { 12, 0x65, 49 }, /* 0000 0110 0101 */
+ { 12, 0x52, 50 }, /* 0000 0101 0010 */
+ { 12, 0x53, 51 }, /* 0000 0101 0011 */
+ { 12, 0x24, 52 }, /* 0000 0010 0100 */
+ { 12, 0x37, 53 }, /* 0000 0011 0111 */
+ { 12, 0x38, 54 }, /* 0000 0011 1000 */
+ { 12, 0x27, 55 }, /* 0000 0010 0111 */
+ { 12, 0x28, 56 }, /* 0000 0010 1000 */
+ { 12, 0x58, 57 }, /* 0000 0101 1000 */
+ { 12, 0x59, 58 }, /* 0000 0101 1001 */
+ { 12, 0x2B, 59 }, /* 0000 0010 1011 */
+ { 12, 0x2C, 60 }, /* 0000 0010 1100 */
+ { 12, 0x5A, 61 }, /* 0000 0101 1010 */
+ { 12, 0x66, 62 }, /* 0000 0110 0110 */
+ { 12, 0x67, 63 }, /* 0000 0110 0111 */
+ { 10, 0xF, 64 }, /* 0000 0011 11 */
+ { 12, 0xC8, 128 }, /* 0000 1100 1000 */
+ { 12, 0xC9, 192 }, /* 0000 1100 1001 */
+ { 12, 0x5B, 256 }, /* 0000 0101 1011 */
+ { 12, 0x33, 320 }, /* 0000 0011 0011 */
+ { 12, 0x34, 384 }, /* 0000 0011 0100 */
+ { 12, 0x35, 448 }, /* 0000 0011 0101 */
+ { 13, 0x6C, 512 }, /* 0000 0011 0110 0 */
+ { 13, 0x6D, 576 }, /* 0000 0011 0110 1 */
+ { 13, 0x4A, 640 }, /* 0000 0010 0101 0 */
+ { 13, 0x4B, 704 }, /* 0000 0010 0101 1 */
+ { 13, 0x4C, 768 }, /* 0000 0010 0110 0 */
+ { 13, 0x4D, 832 }, /* 0000 0010 0110 1 */
+ { 13, 0x72, 896 }, /* 0000 0011 1001 0 */
+ { 13, 0x73, 960 }, /* 0000 0011 1001 1 */
+ { 13, 0x74, 1024 }, /* 0000 0011 1010 0 */
+ { 13, 0x75, 1088 }, /* 0000 0011 1010 1 */
+ { 13, 0x76, 1152 }, /* 0000 0011 1011 0 */
+ { 13, 0x77, 1216 }, /* 0000 0011 1011 1 */
+ { 13, 0x52, 1280 }, /* 0000 0010 1001 0 */
+ { 13, 0x53, 1344 }, /* 0000 0010 1001 1 */
+ { 13, 0x54, 1408 }, /* 0000 0010 1010 0 */
+ { 13, 0x55, 1472 }, /* 0000 0010 1010 1 */
+ { 13, 0x5A, 1536 }, /* 0000 0010 1101 0 */
+ { 13, 0x5B, 1600 }, /* 0000 0010 1101 1 */
+ { 13, 0x64, 1664 }, /* 0000 0011 0010 0 */
+ { 13, 0x65, 1728 }, /* 0000 0011 0010 1 */
+ { 11, 0x8, 1792 }, /* 0000 0001 000 */
+ { 11, 0xC, 1856 }, /* 0000 0001 100 */
+ { 11, 0xD, 1920 }, /* 0000 0001 101 */
+ { 12, 0x12, 1984 }, /* 0000 0001 0010 */
+ { 12, 0x13, 2048 }, /* 0000 0001 0011 */
+ { 12, 0x14, 2112 }, /* 0000 0001 0100 */
+ { 12, 0x15, 2176 }, /* 0000 0001 0101 */
+ { 12, 0x16, 2240 }, /* 0000 0001 0110 */
+ { 12, 0x17, 2304 }, /* 0000 0001 0111 */
+ { 12, 0x1C, 2368 }, /* 0000 0001 1100 */
+ { 12, 0x1D, 2432 }, /* 0000 0001 1101 */
+ { 12, 0x1E, 2496 }, /* 0000 0001 1110 */
+ { 12, 0x1F, 2560 }, /* 0000 0001 1111 */
+ { 12, 0x1, G3CODE_EOL }, /* 0000 0000 0001 */
+ { 9, 0x1, G3CODE_INVALID }, /* 0000 0000 1 */
+ { 10, 0x1, G3CODE_INVALID }, /* 0000 0000 01 */
+ { 11, 0x1, G3CODE_INVALID }, /* 0000 0000 001 */
+ { 12, 0x0, G3CODE_INVALID }, /* 0000 0000 0000 */
+};
+#else
+extern const tableentry TIFFFaxWhiteCodes[];
+extern const tableentry TIFFFaxBlackCodes[];
+#endif
+#endif /* _T4_ */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_aux.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_aux.c
new file mode 100644
index 0000000..752e8d6
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_aux.c
@@ -0,0 +1,360 @@
+/* $Id: tif_aux.c,v 1.26 2010-07-01 15:33:28 dron Exp $ */
+
+/*
+ * Copyright (c) 1991-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Auxiliary Support Routines.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include "tif_predict.h"
+#include <math.h>
+
+uint32
+_TIFFMultiply32(TIFF* tif, uint32 first, uint32 second, const char* where)
+{
+ uint32 bytes = first * second;
+
+ if (second && bytes / second != first) {
+ TIFFErrorExt(tif->tif_clientdata, where, "Integer overflow in %s", where);
+ bytes = 0;
+ }
+
+ return bytes;
+}
+
+uint64
+_TIFFMultiply64(TIFF* tif, uint64 first, uint64 second, const char* where)
+{
+ uint64 bytes = first * second;
+
+ if (second && bytes / second != first) {
+ TIFFErrorExt(tif->tif_clientdata, where, "Integer overflow in %s", where);
+ bytes = 0;
+ }
+
+ return bytes;
+}
+
+void*
+_TIFFCheckRealloc(TIFF* tif, void* buffer,
+ tmsize_t nmemb, tmsize_t elem_size, const char* what)
+{
+ void* cp = NULL;
+ tmsize_t bytes = nmemb * elem_size;
+
+ /*
+ * XXX: Check for integer overflow.
+ */
+ if (nmemb && elem_size && bytes / elem_size == nmemb)
+ cp = _TIFFrealloc(buffer, bytes);
+
+ if (cp == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Failed to allocate memory for %s "
+ "(%ld elements of %ld bytes each)",
+ what,(long) nmemb, (long) elem_size);
+ }
+
+ return cp;
+}
+
+void*
+_TIFFCheckMalloc(TIFF* tif, tmsize_t nmemb, tmsize_t elem_size, const char* what)
+{
+ return _TIFFCheckRealloc(tif, NULL, nmemb, elem_size, what);
+}
+
+static int
+TIFFDefaultTransferFunction(TIFFDirectory* td)
+{
+ uint16 **tf = td->td_transferfunction;
+ tmsize_t i, n, nbytes;
+
+ tf[0] = tf[1] = tf[2] = 0;
+ if (td->td_bitspersample >= sizeof(tmsize_t) * 8 - 2)
+ return 0;
+
+ n = ((tmsize_t)1)<<td->td_bitspersample;
+ nbytes = n * sizeof (uint16);
+ if (!(tf[0] = (uint16 *)_TIFFmalloc(nbytes)))
+ return 0;
+ tf[0][0] = 0;
+ for (i = 1; i < n; i++) {
+ double t = (double)i/((double) n-1.);
+ tf[0][i] = (uint16)floor(65535.*pow(t, 2.2) + .5);
+ }
+
+ if (td->td_samplesperpixel - td->td_extrasamples > 1) {
+ if (!(tf[1] = (uint16 *)_TIFFmalloc(nbytes)))
+ goto bad;
+ _TIFFmemcpy(tf[1], tf[0], nbytes);
+ if (!(tf[2] = (uint16 *)_TIFFmalloc(nbytes)))
+ goto bad;
+ _TIFFmemcpy(tf[2], tf[0], nbytes);
+ }
+ return 1;
+
+bad:
+ if (tf[0])
+ _TIFFfree(tf[0]);
+ if (tf[1])
+ _TIFFfree(tf[1]);
+ if (tf[2])
+ _TIFFfree(tf[2]);
+ tf[0] = tf[1] = tf[2] = 0;
+ return 0;
+}
+
+static int
+TIFFDefaultRefBlackWhite(TIFFDirectory* td)
+{
+ int i;
+
+ if (!(td->td_refblackwhite = (float *)_TIFFmalloc(6*sizeof (float))))
+ return 0;
+ if (td->td_photometric == PHOTOMETRIC_YCBCR) {
+ /*
+ * YCbCr (Class Y) images must have the ReferenceBlackWhite
+ * tag set. Fix the broken images, which lacks that tag.
+ */
+ td->td_refblackwhite[0] = 0.0F;
+ td->td_refblackwhite[1] = td->td_refblackwhite[3] =
+ td->td_refblackwhite[5] = 255.0F;
+ td->td_refblackwhite[2] = td->td_refblackwhite[4] = 128.0F;
+ } else {
+ /*
+ * Assume RGB (Class R)
+ */
+ for (i = 0; i < 3; i++) {
+ td->td_refblackwhite[2*i+0] = 0;
+ td->td_refblackwhite[2*i+1] =
+ (float)((1L<<td->td_bitspersample)-1L);
+ }
+ }
+ return 1;
+}
+
+/*
+ * Like TIFFGetField, but return any default
+ * value if the tag is not present in the directory.
+ *
+ * NB: We use the value in the directory, rather than
+ * explcit values so that defaults exist only one
+ * place in the library -- in TIFFDefaultDirectory.
+ */
+int
+TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (TIFFVGetField(tif, tag, ap))
+ return (1);
+ switch (tag) {
+ case TIFFTAG_SUBFILETYPE:
+ *va_arg(ap, uint32 *) = td->td_subfiletype;
+ return (1);
+ case TIFFTAG_BITSPERSAMPLE:
+ *va_arg(ap, uint16 *) = td->td_bitspersample;
+ return (1);
+ case TIFFTAG_THRESHHOLDING:
+ *va_arg(ap, uint16 *) = td->td_threshholding;
+ return (1);
+ case TIFFTAG_FILLORDER:
+ *va_arg(ap, uint16 *) = td->td_fillorder;
+ return (1);
+ case TIFFTAG_ORIENTATION:
+ *va_arg(ap, uint16 *) = td->td_orientation;
+ return (1);
+ case TIFFTAG_SAMPLESPERPIXEL:
+ *va_arg(ap, uint16 *) = td->td_samplesperpixel;
+ return (1);
+ case TIFFTAG_ROWSPERSTRIP:
+ *va_arg(ap, uint32 *) = td->td_rowsperstrip;
+ return (1);
+ case TIFFTAG_MINSAMPLEVALUE:
+ *va_arg(ap, uint16 *) = td->td_minsamplevalue;
+ return (1);
+ case TIFFTAG_MAXSAMPLEVALUE:
+ *va_arg(ap, uint16 *) = td->td_maxsamplevalue;
+ return (1);
+ case TIFFTAG_PLANARCONFIG:
+ *va_arg(ap, uint16 *) = td->td_planarconfig;
+ return (1);
+ case TIFFTAG_RESOLUTIONUNIT:
+ *va_arg(ap, uint16 *) = td->td_resolutionunit;
+ return (1);
+ case TIFFTAG_PREDICTOR:
+ {
+ TIFFPredictorState* sp = (TIFFPredictorState*) tif->tif_data;
+ *va_arg(ap, uint16*) = (uint16) sp->predictor;
+ return 1;
+ }
+ case TIFFTAG_DOTRANGE:
+ *va_arg(ap, uint16 *) = 0;
+ *va_arg(ap, uint16 *) = (1<<td->td_bitspersample)-1;
+ return (1);
+ case TIFFTAG_INKSET:
+ *va_arg(ap, uint16 *) = INKSET_CMYK;
+ return 1;
+ case TIFFTAG_NUMBEROFINKS:
+ *va_arg(ap, uint16 *) = 4;
+ return (1);
+ case TIFFTAG_EXTRASAMPLES:
+ *va_arg(ap, uint16 *) = td->td_extrasamples;
+ *va_arg(ap, uint16 **) = td->td_sampleinfo;
+ return (1);
+ case TIFFTAG_MATTEING:
+ *va_arg(ap, uint16 *) =
+ (td->td_extrasamples == 1 &&
+ td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
+ return (1);
+ case TIFFTAG_TILEDEPTH:
+ *va_arg(ap, uint32 *) = td->td_tiledepth;
+ return (1);
+ case TIFFTAG_DATATYPE:
+ *va_arg(ap, uint16 *) = td->td_sampleformat-1;
+ return (1);
+ case TIFFTAG_SAMPLEFORMAT:
+ *va_arg(ap, uint16 *) = td->td_sampleformat;
+ return(1);
+ case TIFFTAG_IMAGEDEPTH:
+ *va_arg(ap, uint32 *) = td->td_imagedepth;
+ return (1);
+ case TIFFTAG_YCBCRCOEFFICIENTS:
+ {
+ /* defaults are from CCIR Recommendation 601-1 */
+ static float ycbcrcoeffs[] = { 0.299f, 0.587f, 0.114f };
+ *va_arg(ap, float **) = ycbcrcoeffs;
+ return 1;
+ }
+ case TIFFTAG_YCBCRSUBSAMPLING:
+ *va_arg(ap, uint16 *) = td->td_ycbcrsubsampling[0];
+ *va_arg(ap, uint16 *) = td->td_ycbcrsubsampling[1];
+ return (1);
+ case TIFFTAG_YCBCRPOSITIONING:
+ *va_arg(ap, uint16 *) = td->td_ycbcrpositioning;
+ return (1);
+ case TIFFTAG_WHITEPOINT:
+ {
+ static float whitepoint[2];
+
+ /* TIFF 6.0 specification tells that it is no default
+ value for the WhitePoint, but AdobePhotoshop TIFF
+ Technical Note tells that it should be CIE D50. */
+ whitepoint[0] = D50_X0 / (D50_X0 + D50_Y0 + D50_Z0);
+ whitepoint[1] = D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0);
+ *va_arg(ap, float **) = whitepoint;
+ return 1;
+ }
+ case TIFFTAG_TRANSFERFUNCTION:
+ if (!td->td_transferfunction[0] &&
+ !TIFFDefaultTransferFunction(td)) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space for \"TransferFunction\" tag");
+ return (0);
+ }
+ *va_arg(ap, uint16 **) = td->td_transferfunction[0];
+ if (td->td_samplesperpixel - td->td_extrasamples > 1) {
+ *va_arg(ap, uint16 **) = td->td_transferfunction[1];
+ *va_arg(ap, uint16 **) = td->td_transferfunction[2];
+ }
+ return (1);
+ case TIFFTAG_REFERENCEBLACKWHITE:
+ if (!td->td_refblackwhite && !TIFFDefaultRefBlackWhite(td))
+ return (0);
+ *va_arg(ap, float **) = td->td_refblackwhite;
+ return (1);
+ }
+ return 0;
+}
+
+/*
+ * Like TIFFGetField, but return any default
+ * value if the tag is not present in the directory.
+ */
+int
+TIFFGetFieldDefaulted(TIFF* tif, uint32 tag, ...)
+{
+ int ok;
+ va_list ap;
+
+ va_start(ap, tag);
+ ok = TIFFVGetFieldDefaulted(tif, tag, ap);
+ va_end(ap);
+ return (ok);
+}
+
+struct _Int64Parts {
+ int32 low, high;
+};
+
+typedef union {
+ struct _Int64Parts part;
+ int64 value;
+} _Int64;
+
+float
+_TIFFUInt64ToFloat(uint64 ui64)
+{
+ _Int64 i;
+
+ i.value = ui64;
+ if (i.part.high >= 0) {
+ return (float)i.value;
+ } else {
+ long double df;
+ df = (long double)i.value;
+ df += 18446744073709551616.0; /* adding 2**64 */
+ return (float)df;
+ }
+}
+
+double
+_TIFFUInt64ToDouble(uint64 ui64)
+{
+ _Int64 i;
+
+ i.value = ui64;
+ if (i.part.high >= 0) {
+ return (double)i.value;
+ } else {
+ long double df;
+ df = (long double)i.value;
+ df += 18446744073709551616.0; /* adding 2**64 */
+ return (double)df;
+ }
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+ #endif
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_close.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_close.c
new file mode 100644
index 0000000..eebb30a
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_close.c
@@ -0,0 +1,143 @@
+/* $Id: tif_close.c,v 1.19 2010-03-10 18:56:48 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include <string.h>
+
+/************************************************************************/
+/* TIFFCleanup() */
+/************************************************************************/
+
+/**
+ * Auxiliary function to free the TIFF structure. Given structure will be
+ * completetly freed, so you should save opened file handle and pointer
+ * to the close procedure in external variables before calling
+ * _TIFFCleanup(), if you will need these ones to close the file.
+ *
+ * @param tif A TIFF pointer.
+ */
+
+void
+TIFFCleanup(TIFF* tif)
+{
+ /*
+ * Flush buffered data and directory (if dirty).
+ */
+ if (tif->tif_mode != O_RDONLY)
+ TIFFFlush(tif);
+ (*tif->tif_cleanup)(tif);
+ TIFFFreeDirectory(tif);
+
+ if (tif->tif_dirlist)
+ _TIFFfree(tif->tif_dirlist);
+
+ /*
+ * Clean up client info links.
+ */
+ while( tif->tif_clientinfo )
+ {
+ TIFFClientInfoLink *link = tif->tif_clientinfo;
+
+ tif->tif_clientinfo = link->next;
+ _TIFFfree( link->name );
+ _TIFFfree( link );
+ }
+
+ if (tif->tif_rawdata && (tif->tif_flags&TIFF_MYBUFFER))
+ _TIFFfree(tif->tif_rawdata);
+ if (isMapped(tif))
+ TIFFUnmapFileContents(tif, tif->tif_base, (toff_t)tif->tif_size);
+
+ /*
+ * Clean up custom fields.
+ */
+ if (tif->tif_fields && tif->tif_nfields > 0) {
+ uint32 i;
+
+ for (i = 0; i < tif->tif_nfields; i++) {
+ TIFFField *fld = tif->tif_fields[i];
+ if (fld->field_bit == FIELD_CUSTOM &&
+ strncmp("Tag ", fld->field_name, 4) == 0) {
+ _TIFFfree(fld->field_name);
+ _TIFFfree(fld);
+ }
+ }
+
+ _TIFFfree(tif->tif_fields);
+ }
+
+ if (tif->tif_nfieldscompat > 0) {
+ uint32 i;
+
+ for (i = 0; i < tif->tif_nfieldscompat; i++) {
+ if (tif->tif_fieldscompat[i].allocated_size)
+ _TIFFfree(tif->tif_fieldscompat[i].fields);
+ }
+ _TIFFfree(tif->tif_fieldscompat);
+ }
+
+ _TIFFfree(tif);
+}
+
+/************************************************************************/
+/* TIFFClose() */
+/************************************************************************/
+
+/**
+ * Close a previously opened TIFF file.
+ *
+ * TIFFClose closes a file that was previously opened with TIFFOpen().
+ * Any buffered data are flushed to the file, including the contents of
+ * the current directory (if modified); and all resources are reclaimed.
+ *
+ * @param tif A TIFF pointer.
+ */
+
+void
+TIFFClose(TIFF* tif)
+{
+ TIFFCloseProc closeproc = tif->tif_closeproc;
+ thandle_t fd = tif->tif_clientdata;
+
+ TIFFCleanup(tif);
+ (void) (*closeproc)(fd);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_codec.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_codec.c
new file mode 100644
index 0000000..16d237f
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_codec.c
@@ -0,0 +1,168 @@
+/* $Id: tif_codec.c,v 1.15 2010-12-14 12:53:00 dron Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library
+ *
+ * Builtin Compression Scheme Configuration Support.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+static int NotConfigured(TIFF*, int);
+
+#ifndef LZW_SUPPORT
+#define TIFFInitLZW NotConfigured
+#endif
+#ifndef PACKBITS_SUPPORT
+#define TIFFInitPackBits NotConfigured
+#endif
+#ifndef THUNDER_SUPPORT
+#define TIFFInitThunderScan NotConfigured
+#endif
+#ifndef NEXT_SUPPORT
+#define TIFFInitNeXT NotConfigured
+#endif
+#ifndef JPEG_SUPPORT
+#define TIFFInitJPEG NotConfigured
+#endif
+#ifndef OJPEG_SUPPORT
+#define TIFFInitOJPEG NotConfigured
+#endif
+#ifndef CCITT_SUPPORT
+#define TIFFInitCCITTRLE NotConfigured
+#define TIFFInitCCITTRLEW NotConfigured
+#define TIFFInitCCITTFax3 NotConfigured
+#define TIFFInitCCITTFax4 NotConfigured
+#endif
+#ifndef JBIG_SUPPORT
+#define TIFFInitJBIG NotConfigured
+#endif
+#ifndef ZIP_SUPPORT
+#define TIFFInitZIP NotConfigured
+#endif
+#ifndef PIXARLOG_SUPPORT
+#define TIFFInitPixarLog NotConfigured
+#endif
+#ifndef LOGLUV_SUPPORT
+#define TIFFInitSGILog NotConfigured
+#endif
+#ifndef LZMA_SUPPORT
+#define TIFFInitLZMA NotConfigured
+#endif
+
+/*
+ * Compression schemes statically built into the library.
+ */
+#ifdef VMS
+const TIFFCodec _TIFFBuiltinCODECS[] = {
+#else
+TIFFCodec _TIFFBuiltinCODECS[] = {
+#endif
+ { "None", COMPRESSION_NONE, TIFFInitDumpMode },
+ { "LZW", COMPRESSION_LZW, TIFFInitLZW },
+ { "PackBits", COMPRESSION_PACKBITS, TIFFInitPackBits },
+ { "ThunderScan", COMPRESSION_THUNDERSCAN,TIFFInitThunderScan },
+ { "NeXT", COMPRESSION_NEXT, TIFFInitNeXT },
+ { "JPEG", COMPRESSION_JPEG, TIFFInitJPEG },
+ { "Old-style JPEG", COMPRESSION_OJPEG, TIFFInitOJPEG },
+ { "CCITT RLE", COMPRESSION_CCITTRLE, TIFFInitCCITTRLE },
+ { "CCITT RLE/W", COMPRESSION_CCITTRLEW, TIFFInitCCITTRLEW },
+ { "CCITT Group 3", COMPRESSION_CCITTFAX3, TIFFInitCCITTFax3 },
+ { "CCITT Group 4", COMPRESSION_CCITTFAX4, TIFFInitCCITTFax4 },
+ { "ISO JBIG", COMPRESSION_JBIG, TIFFInitJBIG },
+ { "Deflate", COMPRESSION_DEFLATE, TIFFInitZIP },
+ { "AdobeDeflate", COMPRESSION_ADOBE_DEFLATE , TIFFInitZIP },
+ { "PixarLog", COMPRESSION_PIXARLOG, TIFFInitPixarLog },
+ { "SGILog", COMPRESSION_SGILOG, TIFFInitSGILog },
+ { "SGILog24", COMPRESSION_SGILOG24, TIFFInitSGILog },
+ { "LZMA", COMPRESSION_LZMA, TIFFInitLZMA },
+ { NULL, 0, NULL }
+};
+
+static int
+_notConfigured(TIFF* tif)
+{
+ const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
+ char compression_code[20];
+
+ sprintf( compression_code, "%d", tif->tif_dir.td_compression );
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%s compression support is not configured",
+ c ? c->name : compression_code );
+ return (0);
+}
+
+static int
+NotConfigured(TIFF* tif, int scheme)
+{
+ (void) scheme;
+
+ tif->tif_fixuptags = _notConfigured;
+ tif->tif_decodestatus = FALSE;
+ tif->tif_setupdecode = _notConfigured;
+ tif->tif_encodestatus = FALSE;
+ tif->tif_setupencode = _notConfigured;
+ return (1);
+}
+
+/************************************************************************/
+/* TIFFIsCODECConfigured() */
+/************************************************************************/
+
+/**
+ * Check whether we have working codec for the specific coding scheme.
+ *
+ * @return returns 1 if the codec is configured and working. Otherwise
+ * 0 will be returned.
+ */
+
+int
+TIFFIsCODECConfigured(uint16 scheme)
+{
+ const TIFFCodec* codec = TIFFFindCODEC(scheme);
+
+ if(codec == NULL) {
+ return 0;
+ }
+ if(codec->init == NULL) {
+ return 0;
+ }
+ if(codec->init != NotConfigured){
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_color.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_color.c
new file mode 100644
index 0000000..71effbc
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_color.c
@@ -0,0 +1,289 @@
+/* $Id: tif_color.c,v 1.19 2010-12-14 02:22:42 faxguy Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * CIE L*a*b* to CIE XYZ and CIE XYZ to RGB conversion routines are taken
+ * from the VIPS library (http://www.vips.ecs.soton.ac.uk) with
+ * the permission of John Cupitt, the VIPS author.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Color space conversion routines.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include <math.h>
+
+/*
+ * Convert color value from the CIE L*a*b* 1976 space to CIE XYZ.
+ */
+void
+TIFFCIELabToXYZ(TIFFCIELabToRGB *cielab, uint32 l, int32 a, int32 b,
+ float *X, float *Y, float *Z)
+{
+ float L = (float)l * 100.0F / 255.0F;
+ float cby, tmp;
+
+ if( L < 8.856F ) {
+ *Y = (L * cielab->Y0) / 903.292F;
+ cby = 7.787F * (*Y / cielab->Y0) + 16.0F / 116.0F;
+ } else {
+ cby = (L + 16.0F) / 116.0F;
+ *Y = cielab->Y0 * cby * cby * cby;
+ }
+
+ tmp = (float)a / 500.0F + cby;
+ if( tmp < 0.2069F )
+ *X = cielab->X0 * (tmp - 0.13793F) / 7.787F;
+ else
+ *X = cielab->X0 * tmp * tmp * tmp;
+
+ tmp = cby - (float)b / 200.0F;
+ if( tmp < 0.2069F )
+ *Z = cielab->Z0 * (tmp - 0.13793F) / 7.787F;
+ else
+ *Z = cielab->Z0 * tmp * tmp * tmp;
+}
+
+#define RINT(R) ((uint32)((R)>0?((R)+0.5):((R)-0.5)))
+/*
+ * Convert color value from the XYZ space to RGB.
+ */
+void
+TIFFXYZToRGB(TIFFCIELabToRGB *cielab, float X, float Y, float Z,
+ uint32 *r, uint32 *g, uint32 *b)
+{
+ int i;
+ float Yr, Yg, Yb;
+ float *matrix = &cielab->display.d_mat[0][0];
+
+ /* Multiply through the matrix to get luminosity values. */
+ Yr = matrix[0] * X + matrix[1] * Y + matrix[2] * Z;
+ Yg = matrix[3] * X + matrix[4] * Y + matrix[5] * Z;
+ Yb = matrix[6] * X + matrix[7] * Y + matrix[8] * Z;
+
+ /* Clip input */
+ Yr = TIFFmax(Yr, cielab->display.d_Y0R);
+ Yg = TIFFmax(Yg, cielab->display.d_Y0G);
+ Yb = TIFFmax(Yb, cielab->display.d_Y0B);
+
+ /* Avoid overflow in case of wrong input values */
+ Yr = TIFFmin(Yr, cielab->display.d_YCR);
+ Yg = TIFFmin(Yg, cielab->display.d_YCG);
+ Yb = TIFFmin(Yb, cielab->display.d_YCB);
+
+ /* Turn luminosity to colour value. */
+ i = (int)((Yr - cielab->display.d_Y0R) / cielab->rstep);
+ i = TIFFmin(cielab->range, i);
+ *r = RINT(cielab->Yr2r[i]);
+
+ i = (int)((Yg - cielab->display.d_Y0G) / cielab->gstep);
+ i = TIFFmin(cielab->range, i);
+ *g = RINT(cielab->Yg2g[i]);
+
+ i = (int)((Yb - cielab->display.d_Y0B) / cielab->bstep);
+ i = TIFFmin(cielab->range, i);
+ *b = RINT(cielab->Yb2b[i]);
+
+ /* Clip output. */
+ *r = TIFFmin(*r, cielab->display.d_Vrwr);
+ *g = TIFFmin(*g, cielab->display.d_Vrwg);
+ *b = TIFFmin(*b, cielab->display.d_Vrwb);
+}
+#undef RINT
+
+/*
+ * Allocate conversion state structures and make look_up tables for
+ * the Yr,Yb,Yg <=> r,g,b conversions.
+ */
+int
+TIFFCIELabToRGBInit(TIFFCIELabToRGB* cielab,
+ const TIFFDisplay *display, float *refWhite)
+{
+ int i;
+ double gamma;
+
+ cielab->range = CIELABTORGB_TABLE_RANGE;
+
+ _TIFFmemcpy(&cielab->display, display, sizeof(TIFFDisplay));
+
+ /* Red */
+ gamma = 1.0 / cielab->display.d_gammaR ;
+ cielab->rstep =
+ (cielab->display.d_YCR - cielab->display.d_Y0R) / cielab->range;
+ for(i = 0; i <= cielab->range; i++) {
+ cielab->Yr2r[i] = cielab->display.d_Vrwr
+ * ((float)pow((double)i / cielab->range, gamma));
+ }
+
+ /* Green */
+ gamma = 1.0 / cielab->display.d_gammaG ;
+ cielab->gstep =
+ (cielab->display.d_YCR - cielab->display.d_Y0R) / cielab->range;
+ for(i = 0; i <= cielab->range; i++) {
+ cielab->Yg2g[i] = cielab->display.d_Vrwg
+ * ((float)pow((double)i / cielab->range, gamma));
+ }
+
+ /* Blue */
+ gamma = 1.0 / cielab->display.d_gammaB ;
+ cielab->bstep =
+ (cielab->display.d_YCR - cielab->display.d_Y0R) / cielab->range;
+ for(i = 0; i <= cielab->range; i++) {
+ cielab->Yb2b[i] = cielab->display.d_Vrwb
+ * ((float)pow((double)i / cielab->range, gamma));
+ }
+
+ /* Init reference white point */
+ cielab->X0 = refWhite[0];
+ cielab->Y0 = refWhite[1];
+ cielab->Z0 = refWhite[2];
+
+ return 0;
+}
+
+/*
+ * Convert color value from the YCbCr space to CIE XYZ.
+ * The colorspace conversion algorithm comes from the IJG v5a code;
+ * see below for more information on how it works.
+ */
+#define SHIFT 16
+#define FIX(x) ((int32)((x) * (1L<<SHIFT) + 0.5))
+#define ONE_HALF ((int32)(1<<(SHIFT-1)))
+#define Code2V(c, RB, RW, CR) ((((c)-(int32)(RB))*(float)(CR))/(float)(((RW)-(RB)) ? ((RW)-(RB)) : 1))
+#define CLAMP(f,min,max) ((f)<(min)?(min):(f)>(max)?(max):(f))
+#define HICLAMP(f,max) ((f)>(max)?(max):(f))
+
+void
+TIFFYCbCrtoRGB(TIFFYCbCrToRGB *ycbcr, uint32 Y, int32 Cb, int32 Cr,
+ uint32 *r, uint32 *g, uint32 *b)
+{
+ int32 i;
+
+ /* XXX: Only 8-bit YCbCr input supported for now */
+ Y = HICLAMP(Y, 255), Cb = CLAMP(Cb, 0, 255), Cr = CLAMP(Cr, 0, 255);
+
+ i = ycbcr->Y_tab[Y] + ycbcr->Cr_r_tab[Cr];
+ *r = CLAMP(i, 0, 255);
+ i = ycbcr->Y_tab[Y]
+ + (int)((ycbcr->Cb_g_tab[Cb] + ycbcr->Cr_g_tab[Cr]) >> SHIFT);
+ *g = CLAMP(i, 0, 255);
+ i = ycbcr->Y_tab[Y] + ycbcr->Cb_b_tab[Cb];
+ *b = CLAMP(i, 0, 255);
+}
+
+/*
+ * Initialize the YCbCr->RGB conversion tables. The conversion
+ * is done according to the 6.0 spec:
+ *
+ * R = Y + Cr*(2 - 2*LumaRed)
+ * B = Y + Cb*(2 - 2*LumaBlue)
+ * G = Y
+ * - LumaBlue*Cb*(2-2*LumaBlue)/LumaGreen
+ * - LumaRed*Cr*(2-2*LumaRed)/LumaGreen
+ *
+ * To avoid floating point arithmetic the fractional constants that
+ * come out of the equations are represented as fixed point values
+ * in the range 0...2^16. We also eliminate multiplications by
+ * pre-calculating possible values indexed by Cb and Cr (this code
+ * assumes conversion is being done for 8-bit samples).
+ */
+int
+TIFFYCbCrToRGBInit(TIFFYCbCrToRGB* ycbcr, float *luma, float *refBlackWhite)
+{
+ TIFFRGBValue* clamptab;
+ int i;
+
+#define LumaRed luma[0]
+#define LumaGreen luma[1]
+#define LumaBlue luma[2]
+
+ clamptab = (TIFFRGBValue*)(
+ (uint8*) ycbcr+TIFFroundup_32(sizeof (TIFFYCbCrToRGB), sizeof (long)));
+ _TIFFmemset(clamptab, 0, 256); /* v < 0 => 0 */
+ ycbcr->clamptab = (clamptab += 256);
+ for (i = 0; i < 256; i++)
+ clamptab[i] = (TIFFRGBValue) i;
+ _TIFFmemset(clamptab+256, 255, 2*256); /* v > 255 => 255 */
+ ycbcr->Cr_r_tab = (int*) (clamptab + 3*256);
+ ycbcr->Cb_b_tab = ycbcr->Cr_r_tab + 256;
+ ycbcr->Cr_g_tab = (int32*) (ycbcr->Cb_b_tab + 256);
+ ycbcr->Cb_g_tab = ycbcr->Cr_g_tab + 256;
+ ycbcr->Y_tab = ycbcr->Cb_g_tab + 256;
+
+ { float f1 = 2-2*LumaRed; int32 D1 = FIX(f1);
+ float f2 = LumaRed*f1/LumaGreen; int32 D2 = -FIX(f2);
+ float f3 = 2-2*LumaBlue; int32 D3 = FIX(f3);
+ float f4 = LumaBlue*f3/LumaGreen; int32 D4 = -FIX(f4);
+ int x;
+
+#undef LumaBlue
+#undef LumaGreen
+#undef LumaRed
+
+ /*
+ * i is the actual input pixel value in the range 0..255
+ * Cb and Cr values are in the range -128..127 (actually
+ * they are in a range defined by the ReferenceBlackWhite
+ * tag) so there is some range shifting to do here when
+ * constructing tables indexed by the raw pixel data.
+ */
+ for (i = 0, x = -128; i < 256; i++, x++) {
+ int32 Cr = (int32)Code2V(x, refBlackWhite[4] - 128.0F,
+ refBlackWhite[5] - 128.0F, 127);
+ int32 Cb = (int32)Code2V(x, refBlackWhite[2] - 128.0F,
+ refBlackWhite[3] - 128.0F, 127);
+
+ ycbcr->Cr_r_tab[i] = (int32)((D1*Cr + ONE_HALF)>>SHIFT);
+ ycbcr->Cb_b_tab[i] = (int32)((D3*Cb + ONE_HALF)>>SHIFT);
+ ycbcr->Cr_g_tab[i] = D2*Cr;
+ ycbcr->Cb_g_tab[i] = D4*Cb + ONE_HALF;
+ ycbcr->Y_tab[i] =
+ (int32)Code2V(x + 128, refBlackWhite[0], refBlackWhite[1], 255);
+ }
+ }
+
+ return 0;
+}
+#undef HICLAMP
+#undef CLAMP
+#undef Code2V
+#undef SHIFT
+#undef ONE_HALF
+#undef FIX
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_compress.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_compress.c
new file mode 100644
index 0000000..5b2b4d5
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_compress.c
@@ -0,0 +1,307 @@
+/* $Id: tif_compress.c,v 1.22 2010-03-10 18:56:48 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library
+ *
+ * Compression Scheme Configuration Support.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+static int
+TIFFNoEncode(TIFF* tif, const char* method)
+{
+ const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
+
+ if (c) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%s %s encoding is not implemented",
+ c->name, method);
+ } else {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Compression scheme %u %s encoding is not implemented",
+ tif->tif_dir.td_compression, method);
+ }
+ return (-1);
+}
+
+int
+_TIFFNoRowEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s)
+{
+ (void) pp; (void) cc; (void) s;
+ return (TIFFNoEncode(tif, "scanline"));
+}
+
+int
+_TIFFNoStripEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s)
+{
+ (void) pp; (void) cc; (void) s;
+ return (TIFFNoEncode(tif, "strip"));
+}
+
+int
+_TIFFNoTileEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s)
+{
+ (void) pp; (void) cc; (void) s;
+ return (TIFFNoEncode(tif, "tile"));
+}
+
+static int
+TIFFNoDecode(TIFF* tif, const char* method)
+{
+ const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
+
+ if (c)
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%s %s decoding is not implemented",
+ c->name, method);
+ else
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Compression scheme %u %s decoding is not implemented",
+ tif->tif_dir.td_compression, method);
+ return (-1);
+}
+
+int
+_TIFFNoFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
+
+int
+_TIFFNoRowDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s)
+{
+ (void) pp; (void) cc; (void) s;
+ return (TIFFNoDecode(tif, "scanline"));
+}
+
+int
+_TIFFNoStripDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s)
+{
+ (void) pp; (void) cc; (void) s;
+ return (TIFFNoDecode(tif, "strip"));
+}
+
+int
+_TIFFNoTileDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s)
+{
+ (void) pp; (void) cc; (void) s;
+ return (TIFFNoDecode(tif, "tile"));
+}
+
+int
+_TIFFNoSeek(TIFF* tif, uint32 off)
+{
+ (void) off;
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Compression algorithm does not support random access");
+ return (0);
+}
+
+int
+_TIFFNoPreCode(TIFF* tif, uint16 s)
+{
+ (void) tif; (void) s;
+ return (1);
+}
+
+static int _TIFFtrue(TIFF* tif) { (void) tif; return (1); }
+static void _TIFFvoid(TIFF* tif) { (void) tif; }
+
+void
+_TIFFSetDefaultCompressionState(TIFF* tif)
+{
+ tif->tif_fixuptags = _TIFFNoFixupTags;
+ tif->tif_decodestatus = TRUE;
+ tif->tif_setupdecode = _TIFFtrue;
+ tif->tif_predecode = _TIFFNoPreCode;
+ tif->tif_decoderow = _TIFFNoRowDecode;
+ tif->tif_decodestrip = _TIFFNoStripDecode;
+ tif->tif_decodetile = _TIFFNoTileDecode;
+ tif->tif_encodestatus = TRUE;
+ tif->tif_setupencode = _TIFFtrue;
+ tif->tif_preencode = _TIFFNoPreCode;
+ tif->tif_postencode = _TIFFtrue;
+ tif->tif_encoderow = _TIFFNoRowEncode;
+ tif->tif_encodestrip = _TIFFNoStripEncode;
+ tif->tif_encodetile = _TIFFNoTileEncode;
+ tif->tif_close = _TIFFvoid;
+ tif->tif_seek = _TIFFNoSeek;
+ tif->tif_cleanup = _TIFFvoid;
+ tif->tif_defstripsize = _TIFFDefaultStripSize;
+ tif->tif_deftilesize = _TIFFDefaultTileSize;
+ tif->tif_flags &= ~(TIFF_NOBITREV|TIFF_NOREADRAW);
+}
+
+int
+TIFFSetCompressionScheme(TIFF* tif, int scheme)
+{
+ const TIFFCodec *c = TIFFFindCODEC((uint16) scheme);
+
+ _TIFFSetDefaultCompressionState(tif);
+ /*
+ * Don't treat an unknown compression scheme as an error.
+ * This permits applications to open files with data that
+ * the library does not have builtin support for, but which
+ * may still be meaningful.
+ */
+ return (c ? (*c->init)(tif, scheme) : 1);
+}
+
+/*
+ * Other compression schemes may be registered. Registered
+ * schemes can also override the builtin versions provided
+ * by this library.
+ */
+typedef struct _codec {
+ struct _codec* next;
+ TIFFCodec* info;
+} codec_t;
+static codec_t* registeredCODECS = NULL;
+
+const TIFFCodec*
+TIFFFindCODEC(uint16 scheme)
+{
+ const TIFFCodec* c;
+ codec_t* cd;
+
+ for (cd = registeredCODECS; cd; cd = cd->next)
+ if (cd->info->scheme == scheme)
+ return ((const TIFFCodec*) cd->info);
+ for (c = _TIFFBuiltinCODECS; c->name; c++)
+ if (c->scheme == scheme)
+ return (c);
+ return ((const TIFFCodec*) 0);
+}
+
+TIFFCodec*
+TIFFRegisterCODEC(uint16 scheme, const char* name, TIFFInitMethod init)
+{
+ codec_t* cd = (codec_t*)
+ _TIFFmalloc((tmsize_t)(sizeof (codec_t) + sizeof (TIFFCodec) + strlen(name)+1));
+
+ if (cd != NULL) {
+ cd->info = (TIFFCodec*) ((uint8*) cd + sizeof (codec_t));
+ cd->info->name = (char*)
+ ((uint8*) cd->info + sizeof (TIFFCodec));
+ strcpy(cd->info->name, name);
+ cd->info->scheme = scheme;
+ cd->info->init = init;
+ cd->next = registeredCODECS;
+ registeredCODECS = cd;
+ } else {
+ TIFFErrorExt(0, "TIFFRegisterCODEC",
+ "No space to register compression scheme %s", name);
+ return NULL;
+ }
+ return (cd->info);
+}
+
+void
+TIFFUnRegisterCODEC(TIFFCodec* c)
+{
+ codec_t* cd;
+ codec_t** pcd;
+
+ for (pcd = ®isteredCODECS; (cd = *pcd); pcd = &cd->next)
+ if (cd->info == c) {
+ *pcd = cd->next;
+ _TIFFfree(cd);
+ return;
+ }
+ TIFFErrorExt(0, "TIFFUnRegisterCODEC",
+ "Cannot remove compression scheme %s; not registered", c->name);
+}
+
+/************************************************************************/
+/* TIFFGetConfisuredCODECs() */
+/************************************************************************/
+
+/**
+ * Get list of configured codecs, both built-in and registered by user.
+ * Caller is responsible to free this structure.
+ *
+ * @return returns array of TIFFCodec records (the last record should be NULL)
+ * or NULL if function failed.
+ */
+
+TIFFCodec*
+TIFFGetConfiguredCODECs()
+{
+ int i = 1;
+ codec_t *cd;
+ const TIFFCodec* c;
+ TIFFCodec* codecs = NULL;
+ TIFFCodec* new_codecs;
+
+ for (cd = registeredCODECS; cd; cd = cd->next) {
+ new_codecs = (TIFFCodec *)
+ _TIFFrealloc(codecs, i * sizeof(TIFFCodec));
+ if (!new_codecs) {
+ _TIFFfree (codecs);
+ return NULL;
+ }
+ codecs = new_codecs;
+ _TIFFmemcpy(codecs + i - 1, cd, sizeof(TIFFCodec));
+ i++;
+ }
+ for (c = _TIFFBuiltinCODECS; c->name; c++) {
+ if (TIFFIsCODECConfigured(c->scheme)) {
+ new_codecs = (TIFFCodec *)
+ _TIFFrealloc(codecs, i * sizeof(TIFFCodec));
+ if (!new_codecs) {
+ _TIFFfree (codecs);
+ return NULL;
+ }
+ codecs = new_codecs;
+ _TIFFmemcpy(codecs + i - 1, (const void*)c, sizeof(TIFFCodec));
+ i++;
+ }
+ }
+
+ new_codecs = (TIFFCodec *) _TIFFrealloc(codecs, i * sizeof(TIFFCodec));
+ if (!new_codecs) {
+ _TIFFfree (codecs);
+ return NULL;
+ }
+ codecs = new_codecs;
+ _TIFFmemset(codecs + i - 1, 0, sizeof(TIFFCodec));
+
+ return codecs;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_dir.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dir.c
new file mode 100644
index 0000000..076d9b4
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dir.c
@@ -0,0 +1,1662 @@
+/* $Id: tif_dir.c,v 1.113 2012-06-14 20:32:53 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Directory Tag Get & Set Routines.
+ * (and also some miscellaneous stuff)
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+/*
+ * These are used in the backwards compatibility code...
+ */
+#define DATATYPE_VOID 0 /* !untyped data */
+#define DATATYPE_INT 1 /* !signed integer data */
+#define DATATYPE_UINT 2 /* !unsigned integer data */
+#define DATATYPE_IEEEFP 3 /* !IEEE floating point data */
+
+static void
+setByteArray(void** vpp, void* vp, size_t nmemb, size_t elem_size)
+{
+ if (*vpp)
+ _TIFFfree(*vpp), *vpp = 0;
+ if (vp) {
+ tmsize_t bytes = (tmsize_t)(nmemb * elem_size);
+ if (elem_size && bytes / elem_size == nmemb)
+ *vpp = (void*) _TIFFmalloc(bytes);
+ if (*vpp)
+ _TIFFmemcpy(*vpp, vp, bytes);
+ }
+}
+void _TIFFsetByteArray(void** vpp, void* vp, uint32 n)
+ { setByteArray(vpp, vp, n, 1); }
+void _TIFFsetString(char** cpp, char* cp)
+ { setByteArray((void**) cpp, (void*) cp, strlen(cp)+1, 1); }
+void _TIFFsetNString(char** cpp, char* cp, uint32 n)
+ { setByteArray((void**) cpp, (void*) cp, n, 1); }
+void _TIFFsetShortArray(uint16** wpp, uint16* wp, uint32 n)
+ { setByteArray((void**) wpp, (void*) wp, n, sizeof (uint16)); }
+void _TIFFsetLongArray(uint32** lpp, uint32* lp, uint32 n)
+ { setByteArray((void**) lpp, (void*) lp, n, sizeof (uint32)); }
+void _TIFFsetLong8Array(uint64** lpp, uint64* lp, uint32 n)
+ { setByteArray((void**) lpp, (void*) lp, n, sizeof (uint64)); }
+void _TIFFsetFloatArray(float** fpp, float* fp, uint32 n)
+ { setByteArray((void**) fpp, (void*) fp, n, sizeof (float)); }
+void _TIFFsetDoubleArray(double** dpp, double* dp, uint32 n)
+ { setByteArray((void**) dpp, (void*) dp, n, sizeof (double)); }
+
+static void
+setDoubleArrayOneValue(double** vpp, double value, size_t nmemb)
+{
+ if (*vpp)
+ _TIFFfree(*vpp);
+ *vpp = _TIFFmalloc(nmemb*sizeof(double));
+ if (*vpp)
+ {
+ while (nmemb--)
+ ((double*)*vpp)[nmemb] = value;
+ }
+}
+
+/*
+ * Install extra samples information.
+ */
+static int
+setExtraSamples(TIFFDirectory* td, va_list ap, uint32* v)
+{
+/* XXX: Unassociated alpha data == 999 is a known Corel Draw bug, see below */
+#define EXTRASAMPLE_COREL_UNASSALPHA 999
+
+ uint16* va;
+ uint32 i;
+
+ *v = (uint16) va_arg(ap, uint16_vap);
+ if ((uint16) *v > td->td_samplesperpixel)
+ return 0;
+ va = va_arg(ap, uint16*);
+ if (*v > 0 && va == NULL) /* typically missing param */
+ return 0;
+ for (i = 0; i < *v; i++) {
+ if (va[i] > EXTRASAMPLE_UNASSALPHA) {
+ /*
+ * XXX: Corel Draw is known to produce incorrect
+ * ExtraSamples tags which must be patched here if we
+ * want to be able to open some of the damaged TIFF
+ * files:
+ */
+ if (va[i] == EXTRASAMPLE_COREL_UNASSALPHA)
+ va[i] = EXTRASAMPLE_UNASSALPHA;
+ else
+ return 0;
+ }
+ }
+ td->td_extrasamples = (uint16) *v;
+ _TIFFsetShortArray(&td->td_sampleinfo, va, td->td_extrasamples);
+ return 1;
+
+#undef EXTRASAMPLE_COREL_UNASSALPHA
+}
+
+/*
+ * Confirm we have "samplesperpixel" ink names separated by \0. Returns
+ * zero if the ink names are not as expected.
+ */
+static uint32
+checkInkNamesString(TIFF* tif, uint32 slen, const char* s)
+{
+ TIFFDirectory* td = &tif->tif_dir;
+ uint16 i = td->td_samplesperpixel;
+
+ if (slen > 0) {
+ const char* ep = s+slen;
+ const char* cp = s;
+ for (; i > 0; i--) {
+ for (; cp < ep && *cp != '\0'; cp++) {}
+ if (cp >= ep)
+ goto bad;
+ cp++; /* skip \0 */
+ }
+ return ((uint32)(cp-s));
+ }
+bad:
+ TIFFErrorExt(tif->tif_clientdata, "TIFFSetField",
+ "%s: Invalid InkNames value; expecting %d names, found %d",
+ tif->tif_name,
+ td->td_samplesperpixel,
+ td->td_samplesperpixel-i);
+ return (0);
+}
+
+static int
+_TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ static const char module[] = "_TIFFVSetField";
+
+ TIFFDirectory* td = &tif->tif_dir;
+ int status = 1;
+ uint32 v32, i, v;
+ char* s;
+ const TIFFField *fip = TIFFFindField(tif, tag, TIFF_ANY);
+ uint32 standard_tag = tag;
+
+ /*
+ * We want to force the custom code to be used for custom
+ * fields even if the tag happens to match a well known
+ * one - important for reinterpreted handling of standard
+ * tag values in custom directories (ie. EXIF)
+ */
+ if (fip->field_bit == FIELD_CUSTOM) {
+ standard_tag = 0;
+ }
+
+ switch (standard_tag) {
+ case TIFFTAG_SUBFILETYPE:
+ td->td_subfiletype = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_IMAGEWIDTH:
+ td->td_imagewidth = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_IMAGELENGTH:
+ td->td_imagelength = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_BITSPERSAMPLE:
+ td->td_bitspersample = (uint16) va_arg(ap, uint16_vap);
+ /*
+ * If the data require post-decoding processing to byte-swap
+ * samples, set it up here. Note that since tags are required
+ * to be ordered, compression code can override this behaviour
+ * in the setup method if it wants to roll the post decoding
+ * work in with its normal work.
+ */
+ if (tif->tif_flags & TIFF_SWAB) {
+ if (td->td_bitspersample == 8)
+ tif->tif_postdecode = _TIFFNoPostDecode;
+ else if (td->td_bitspersample == 16)
+ tif->tif_postdecode = _TIFFSwab16BitData;
+ else if (td->td_bitspersample == 24)
+ tif->tif_postdecode = _TIFFSwab24BitData;
+ else if (td->td_bitspersample == 32)
+ tif->tif_postdecode = _TIFFSwab32BitData;
+ else if (td->td_bitspersample == 64)
+ tif->tif_postdecode = _TIFFSwab64BitData;
+ else if (td->td_bitspersample == 128) /* two 64's */
+ tif->tif_postdecode = _TIFFSwab64BitData;
+ }
+ break;
+ case TIFFTAG_COMPRESSION:
+ v = (uint16) va_arg(ap, uint16_vap);
+ /*
+ * If we're changing the compression scheme, the notify the
+ * previous module so that it can cleanup any state it's
+ * setup.
+ */
+ if (TIFFFieldSet(tif, FIELD_COMPRESSION)) {
+ if ((uint32)td->td_compression == v)
+ break;
+ (*tif->tif_cleanup)(tif);
+ tif->tif_flags &= ~TIFF_CODERSETUP;
+ }
+ /*
+ * Setup new compression routine state.
+ */
+ if( (status = TIFFSetCompressionScheme(tif, v)) != 0 )
+ td->td_compression = (uint16) v;
+ else
+ status = 0;
+ break;
+ case TIFFTAG_PHOTOMETRIC:
+ td->td_photometric = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_THRESHHOLDING:
+ td->td_threshholding = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_FILLORDER:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v != FILLORDER_LSB2MSB && v != FILLORDER_MSB2LSB)
+ goto badvalue;
+ td->td_fillorder = (uint16) v;
+ break;
+ case TIFFTAG_ORIENTATION:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v < ORIENTATION_TOPLEFT || ORIENTATION_LEFTBOT < v)
+ goto badvalue;
+ else
+ td->td_orientation = (uint16) v;
+ break;
+ case TIFFTAG_SAMPLESPERPIXEL:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v == 0)
+ goto badvalue;
+ td->td_samplesperpixel = (uint16) v;
+ break;
+ case TIFFTAG_ROWSPERSTRIP:
+ v32 = (uint32) va_arg(ap, uint32);
+ if (v32 == 0)
+ goto badvalue32;
+ td->td_rowsperstrip = v32;
+ if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
+ td->td_tilelength = v32;
+ td->td_tilewidth = td->td_imagewidth;
+ }
+ break;
+ case TIFFTAG_MINSAMPLEVALUE:
+ td->td_minsamplevalue = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_MAXSAMPLEVALUE:
+ td->td_maxsamplevalue = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_SMINSAMPLEVALUE:
+ if (tif->tif_flags & TIFF_PERSAMPLE)
+ _TIFFsetDoubleArray(&td->td_sminsamplevalue, va_arg(ap, double*), td->td_samplesperpixel);
+ else
+ setDoubleArrayOneValue(&td->td_sminsamplevalue, va_arg(ap, double), td->td_samplesperpixel);
+ break;
+ case TIFFTAG_SMAXSAMPLEVALUE:
+ if (tif->tif_flags & TIFF_PERSAMPLE)
+ _TIFFsetDoubleArray(&td->td_smaxsamplevalue, va_arg(ap, double*), td->td_samplesperpixel);
+ else
+ setDoubleArrayOneValue(&td->td_smaxsamplevalue, va_arg(ap, double), td->td_samplesperpixel);
+ break;
+ case TIFFTAG_XRESOLUTION:
+ td->td_xresolution = (float) va_arg(ap, double);
+ break;
+ case TIFFTAG_YRESOLUTION:
+ td->td_yresolution = (float) va_arg(ap, double);
+ break;
+ case TIFFTAG_PLANARCONFIG:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v != PLANARCONFIG_CONTIG && v != PLANARCONFIG_SEPARATE)
+ goto badvalue;
+ td->td_planarconfig = (uint16) v;
+ break;
+ case TIFFTAG_XPOSITION:
+ td->td_xposition = (float) va_arg(ap, double);
+ break;
+ case TIFFTAG_YPOSITION:
+ td->td_yposition = (float) va_arg(ap, double);
+ break;
+ case TIFFTAG_RESOLUTIONUNIT:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v < RESUNIT_NONE || RESUNIT_CENTIMETER < v)
+ goto badvalue;
+ td->td_resolutionunit = (uint16) v;
+ break;
+ case TIFFTAG_PAGENUMBER:
+ td->td_pagenumber[0] = (uint16) va_arg(ap, uint16_vap);
+ td->td_pagenumber[1] = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_HALFTONEHINTS:
+ td->td_halftonehints[0] = (uint16) va_arg(ap, uint16_vap);
+ td->td_halftonehints[1] = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_COLORMAP:
+ v32 = (uint32)(1L<<td->td_bitspersample);
+ _TIFFsetShortArray(&td->td_colormap[0], va_arg(ap, uint16*), v32);
+ _TIFFsetShortArray(&td->td_colormap[1], va_arg(ap, uint16*), v32);
+ _TIFFsetShortArray(&td->td_colormap[2], va_arg(ap, uint16*), v32);
+ break;
+ case TIFFTAG_EXTRASAMPLES:
+ if (!setExtraSamples(td, ap, &v))
+ goto badvalue;
+ break;
+ case TIFFTAG_MATTEING:
+ td->td_extrasamples = (((uint16) va_arg(ap, uint16_vap)) != 0);
+ if (td->td_extrasamples) {
+ uint16 sv = EXTRASAMPLE_ASSOCALPHA;
+ _TIFFsetShortArray(&td->td_sampleinfo, &sv, 1);
+ }
+ break;
+ case TIFFTAG_TILEWIDTH:
+ v32 = (uint32) va_arg(ap, uint32);
+ if (v32 % 16) {
+ if (tif->tif_mode != O_RDONLY)
+ goto badvalue32;
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+ "Nonstandard tile width %d, convert file", v32);
+ }
+ td->td_tilewidth = v32;
+ tif->tif_flags |= TIFF_ISTILED;
+ break;
+ case TIFFTAG_TILELENGTH:
+ v32 = (uint32) va_arg(ap, uint32);
+ if (v32 % 16) {
+ if (tif->tif_mode != O_RDONLY)
+ goto badvalue32;
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+ "Nonstandard tile length %d, convert file", v32);
+ }
+ td->td_tilelength = v32;
+ tif->tif_flags |= TIFF_ISTILED;
+ break;
+ case TIFFTAG_TILEDEPTH:
+ v32 = (uint32) va_arg(ap, uint32);
+ if (v32 == 0)
+ goto badvalue32;
+ td->td_tiledepth = v32;
+ break;
+ case TIFFTAG_DATATYPE:
+ v = (uint16) va_arg(ap, uint16_vap);
+ switch (v) {
+ case DATATYPE_VOID: v = SAMPLEFORMAT_VOID; break;
+ case DATATYPE_INT: v = SAMPLEFORMAT_INT; break;
+ case DATATYPE_UINT: v = SAMPLEFORMAT_UINT; break;
+ case DATATYPE_IEEEFP: v = SAMPLEFORMAT_IEEEFP;break;
+ default: goto badvalue;
+ }
+ td->td_sampleformat = (uint16) v;
+ break;
+ case TIFFTAG_SAMPLEFORMAT:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v < SAMPLEFORMAT_UINT || SAMPLEFORMAT_COMPLEXIEEEFP < v)
+ goto badvalue;
+ td->td_sampleformat = (uint16) v;
+
+ /* Try to fix up the SWAB function for complex data. */
+ if( td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT
+ && td->td_bitspersample == 32
+ && tif->tif_postdecode == _TIFFSwab32BitData )
+ tif->tif_postdecode = _TIFFSwab16BitData;
+ else if( (td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT
+ || td->td_sampleformat == SAMPLEFORMAT_COMPLEXIEEEFP)
+ && td->td_bitspersample == 64
+ && tif->tif_postdecode == _TIFFSwab64BitData )
+ tif->tif_postdecode = _TIFFSwab32BitData;
+ break;
+ case TIFFTAG_IMAGEDEPTH:
+ td->td_imagedepth = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_SUBIFD:
+ if ((tif->tif_flags & TIFF_INSUBIFD) == 0) {
+ td->td_nsubifd = (uint16) va_arg(ap, uint16_vap);
+ _TIFFsetLong8Array(&td->td_subifd, (uint64*) va_arg(ap, uint64*),
+ (long) td->td_nsubifd);
+ } else {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Sorry, cannot nest SubIFDs",
+ tif->tif_name);
+ status = 0;
+ }
+ break;
+ case TIFFTAG_YCBCRPOSITIONING:
+ td->td_ycbcrpositioning = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_YCBCRSUBSAMPLING:
+ td->td_ycbcrsubsampling[0] = (uint16) va_arg(ap, uint16_vap);
+ td->td_ycbcrsubsampling[1] = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_TRANSFERFUNCTION:
+ v = (td->td_samplesperpixel - td->td_extrasamples) > 1 ? 3 : 1;
+ for (i = 0; i < v; i++)
+ _TIFFsetShortArray(&td->td_transferfunction[i],
+ va_arg(ap, uint16*), 1L<<td->td_bitspersample);
+ break;
+ case TIFFTAG_REFERENCEBLACKWHITE:
+ /* XXX should check for null range */
+ _TIFFsetFloatArray(&td->td_refblackwhite, va_arg(ap, float*), 6);
+ break;
+ case TIFFTAG_INKNAMES:
+ v = (uint16) va_arg(ap, uint16_vap);
+ s = va_arg(ap, char*);
+ v = checkInkNamesString(tif, v, s);
+ status = v > 0;
+ if( v > 0 ) {
+ _TIFFsetNString(&td->td_inknames, s, v);
+ td->td_inknameslen = v;
+ }
+ break;
+ case TIFFTAG_PERSAMPLE:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if( v == PERSAMPLE_MULTI )
+ tif->tif_flags |= TIFF_PERSAMPLE;
+ else
+ tif->tif_flags &= ~TIFF_PERSAMPLE;
+ break;
+ default: {
+ TIFFTagValue *tv;
+ int tv_size, iCustom;
+
+ /*
+ * This can happen if multiple images are open with different
+ * codecs which have private tags. The global tag information
+ * table may then have tags that are valid for one file but not
+ * the other. If the client tries to set a tag that is not valid
+ * for the image's codec then we'll arrive here. This
+ * happens, for example, when tiffcp is used to convert between
+ * compression schemes and codec-specific tags are blindly copied.
+ */
+ if(fip == NULL || fip->field_bit != FIELD_CUSTOM) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Invalid %stag \"%s\" (not supported by codec)",
+ tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "",
+ fip ? fip->field_name : "Unknown");
+ status = 0;
+ break;
+ }
+
+ /*
+ * Find the existing entry for this custom value.
+ */
+ tv = NULL;
+ for (iCustom = 0; iCustom < td->td_customValueCount; iCustom++) {
+ if (td->td_customValues[iCustom].info->field_tag == tag) {
+ tv = td->td_customValues + iCustom;
+ if (tv->value != NULL) {
+ _TIFFfree(tv->value);
+ tv->value = NULL;
+ }
+ break;
+ }
+ }
+
+ /*
+ * Grow the custom list if the entry was not found.
+ */
+ if(tv == NULL) {
+ TIFFTagValue *new_customValues;
+
+ td->td_customValueCount++;
+ new_customValues = (TIFFTagValue *)
+ _TIFFrealloc(td->td_customValues,
+ sizeof(TIFFTagValue) * td->td_customValueCount);
+ if (!new_customValues) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Failed to allocate space for list of custom values",
+ tif->tif_name);
+ status = 0;
+ goto end;
+ }
+
+ td->td_customValues = new_customValues;
+
+ tv = td->td_customValues + (td->td_customValueCount - 1);
+ tv->info = fip;
+ tv->value = NULL;
+ tv->count = 0;
+ }
+
+ /*
+ * Set custom value ... save a copy of the custom tag value.
+ */
+ tv_size = _TIFFDataSize(fip->field_type);
+ if (tv_size == 0) {
+ status = 0;
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Bad field type %d for \"%s\"",
+ tif->tif_name, fip->field_type,
+ fip->field_name);
+ goto end;
+ }
+
+ if (fip->field_type == TIFF_ASCII)
+ {
+ uint32 ma;
+ char* mb;
+ if (fip->field_passcount)
+ {
+ assert(fip->field_writecount==TIFF_VARIABLE2);
+ ma=(uint32)va_arg(ap,uint32);
+ mb=(char*)va_arg(ap,char*);
+ }
+ else
+ {
+ mb=(char*)va_arg(ap,char*);
+ ma=(uint32)(strlen(mb)+1);
+ }
+ tv->count=ma;
+ setByteArray(&tv->value,mb,ma,1);
+ }
+ else
+ {
+ if (fip->field_passcount) {
+ if (fip->field_writecount == TIFF_VARIABLE2)
+ tv->count = (uint32) va_arg(ap, uint32);
+ else
+ tv->count = (int) va_arg(ap, int);
+ } else if (fip->field_writecount == TIFF_VARIABLE
+ || fip->field_writecount == TIFF_VARIABLE2)
+ tv->count = 1;
+ else if (fip->field_writecount == TIFF_SPP)
+ tv->count = td->td_samplesperpixel;
+ else
+ tv->count = fip->field_writecount;
+
+ if (tv->count == 0) {
+ status = 0;
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Null count for \"%s\" (type "
+ "%d, writecount %d, passcount %d)",
+ tif->tif_name,
+ fip->field_name,
+ fip->field_type,
+ fip->field_writecount,
+ fip->field_passcount);
+ goto end;
+ }
+
+ tv->value = _TIFFCheckMalloc(tif, tv->count, tv_size,
+ "custom tag binary object");
+ if (!tv->value) {
+ status = 0;
+ goto end;
+ }
+
+ if (fip->field_tag == TIFFTAG_DOTRANGE
+ && strcmp(fip->field_name,"DotRange") == 0) {
+ /* TODO: This is an evil exception and should not have been
+ handled this way ... likely best if we move it into
+ the directory structure with an explicit field in
+ libtiff 4.1 and assign it a FIELD_ value */
+ uint16 v[2];
+ v[0] = (uint16)va_arg(ap, int);
+ v[1] = (uint16)va_arg(ap, int);
+ _TIFFmemcpy(tv->value, &v, 4);
+ }
+
+ else if (fip->field_passcount
+ || fip->field_writecount == TIFF_VARIABLE
+ || fip->field_writecount == TIFF_VARIABLE2
+ || fip->field_writecount == TIFF_SPP
+ || tv->count > 1) {
+ _TIFFmemcpy(tv->value, va_arg(ap, void *),
+ tv->count * tv_size);
+ } else {
+ char *val = (char *)tv->value;
+ assert( tv->count == 1 );
+
+ switch (fip->field_type) {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ {
+ uint8 v = (uint8)va_arg(ap, int);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8 v = (int8)va_arg(ap, int);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16 v = (uint16)va_arg(ap, int);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16 v = (int16)va_arg(ap, int);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_LONG:
+ case TIFF_IFD:
+ {
+ uint32 v = va_arg(ap, uint32);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32 v = va_arg(ap, int32);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_LONG8:
+ case TIFF_IFD8:
+ {
+ uint64 v = va_arg(ap, uint64);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64 v = va_arg(ap, int64);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ {
+ float v = (float)va_arg(ap, double);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_DOUBLE:
+ {
+ double v = va_arg(ap, double);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ default:
+ _TIFFmemset(val, 0, tv_size);
+ status = 0;
+ break;
+ }
+ }
+ }
+ }
+ }
+ if (status) {
+ const TIFFField* fip=TIFFFieldWithTag(tif,tag);
+ if (fip)
+ TIFFSetFieldBit(tif, fip->field_bit);
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+ }
+
+end:
+ va_end(ap);
+ return (status);
+badvalue:
+ {
+ const TIFFField* fip=TIFFFieldWithTag(tif,tag);
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Bad value %u for \"%s\" tag",
+ tif->tif_name, v,
+ fip ? fip->field_name : "Unknown");
+ va_end(ap);
+ }
+ return (0);
+badvalue32:
+ {
+ const TIFFField* fip=TIFFFieldWithTag(tif,tag);
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Bad value %u for \"%s\" tag",
+ tif->tif_name, v32,
+ fip ? fip->field_name : "Unknown");
+ va_end(ap);
+ }
+ return (0);
+}
+
+/*
+ * Return 1/0 according to whether or not
+ * it is permissible to set the tag's value.
+ * Note that we allow ImageLength to be changed
+ * so that we can append and extend to images.
+ * Any other tag may not be altered once writing
+ * has commenced, unless its value has no effect
+ * on the format of the data that is written.
+ */
+static int
+OkToChangeTag(TIFF* tif, uint32 tag)
+{
+ const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
+ if (!fip) { /* unknown tag */
+ TIFFErrorExt(tif->tif_clientdata, "TIFFSetField", "%s: Unknown %stag %u",
+ tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", tag);
+ return (0);
+ }
+ if (tag != TIFFTAG_IMAGELENGTH && (tif->tif_flags & TIFF_BEENWRITING) &&
+ !fip->field_oktochange) {
+ /*
+ * Consult info table to see if tag can be changed
+ * after we've started writing. We only allow changes
+ * to those tags that don't/shouldn't affect the
+ * compression and/or format of the data.
+ */
+ TIFFErrorExt(tif->tif_clientdata, "TIFFSetField",
+ "%s: Cannot modify tag \"%s\" while writing",
+ tif->tif_name, fip->field_name);
+ return (0);
+ }
+ return (1);
+}
+
+/*
+ * Record the value of a field in the
+ * internal directory structure. The
+ * field will be written to the file
+ * when/if the directory structure is
+ * updated.
+ */
+int
+TIFFSetField(TIFF* tif, uint32 tag, ...)
+{
+ va_list ap;
+ int status;
+
+ va_start(ap, tag);
+ status = TIFFVSetField(tif, tag, ap);
+ va_end(ap);
+ return (status);
+}
+
+/*
+ * Clear the contents of the field in the internal structure.
+ */
+int
+TIFFUnsetField(TIFF* tif, uint32 tag)
+{
+ const TIFFField *fip = TIFFFieldWithTag(tif, tag);
+ TIFFDirectory* td = &tif->tif_dir;
+
+ if( !fip )
+ return 0;
+
+ if( fip->field_bit != FIELD_CUSTOM )
+ TIFFClrFieldBit(tif, fip->field_bit);
+ else
+ {
+ TIFFTagValue *tv = NULL;
+ int i;
+
+ for (i = 0; i < td->td_customValueCount; i++) {
+
+ tv = td->td_customValues + i;
+ if( tv->info->field_tag == tag )
+ break;
+ }
+
+ if( i < td->td_customValueCount )
+ {
+ _TIFFfree(tv->value);
+ for( ; i < td->td_customValueCount-1; i++) {
+ td->td_customValues[i] = td->td_customValues[i+1];
+ }
+ td->td_customValueCount--;
+ }
+ }
+
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+
+ return (1);
+}
+
+/*
+ * Like TIFFSetField, but taking a varargs
+ * parameter list. This routine is useful
+ * for building higher-level interfaces on
+ * top of the library.
+ */
+int
+TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ return OkToChangeTag(tif, tag) ?
+ (*tif->tif_tagmethods.vsetfield)(tif, tag, ap) : 0;
+}
+
+static int
+_TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ TIFFDirectory* td = &tif->tif_dir;
+ int ret_val = 1;
+ uint32 standard_tag = tag;
+ const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
+
+ /*
+ * We want to force the custom code to be used for custom
+ * fields even if the tag happens to match a well known
+ * one - important for reinterpreted handling of standard
+ * tag values in custom directories (ie. EXIF)
+ */
+ if (fip->field_bit == FIELD_CUSTOM) {
+ standard_tag = 0;
+ }
+
+ switch (standard_tag) {
+ case TIFFTAG_SUBFILETYPE:
+ *va_arg(ap, uint32*) = td->td_subfiletype;
+ break;
+ case TIFFTAG_IMAGEWIDTH:
+ *va_arg(ap, uint32*) = td->td_imagewidth;
+ break;
+ case TIFFTAG_IMAGELENGTH:
+ *va_arg(ap, uint32*) = td->td_imagelength;
+ break;
+ case TIFFTAG_BITSPERSAMPLE:
+ *va_arg(ap, uint16*) = td->td_bitspersample;
+ break;
+ case TIFFTAG_COMPRESSION:
+ *va_arg(ap, uint16*) = td->td_compression;
+ break;
+ case TIFFTAG_PHOTOMETRIC:
+ *va_arg(ap, uint16*) = td->td_photometric;
+ break;
+ case TIFFTAG_THRESHHOLDING:
+ *va_arg(ap, uint16*) = td->td_threshholding;
+ break;
+ case TIFFTAG_FILLORDER:
+ *va_arg(ap, uint16*) = td->td_fillorder;
+ break;
+ case TIFFTAG_ORIENTATION:
+ *va_arg(ap, uint16*) = td->td_orientation;
+ break;
+ case TIFFTAG_SAMPLESPERPIXEL:
+ *va_arg(ap, uint16*) = td->td_samplesperpixel;
+ break;
+ case TIFFTAG_ROWSPERSTRIP:
+ *va_arg(ap, uint32*) = td->td_rowsperstrip;
+ break;
+ case TIFFTAG_MINSAMPLEVALUE:
+ *va_arg(ap, uint16*) = td->td_minsamplevalue;
+ break;
+ case TIFFTAG_MAXSAMPLEVALUE:
+ *va_arg(ap, uint16*) = td->td_maxsamplevalue;
+ break;
+ case TIFFTAG_SMINSAMPLEVALUE:
+ if (tif->tif_flags & TIFF_PERSAMPLE)
+ *va_arg(ap, double**) = td->td_sminsamplevalue;
+ else
+ {
+ /* libtiff historially treats this as a single value. */
+ uint16 i;
+ double v = td->td_sminsamplevalue[0];
+ for (i=1; i < td->td_samplesperpixel; ++i)
+ if( td->td_sminsamplevalue[i] < v )
+ v = td->td_sminsamplevalue[i];
+ *va_arg(ap, double*) = v;
+ }
+ break;
+ case TIFFTAG_SMAXSAMPLEVALUE:
+ if (tif->tif_flags & TIFF_PERSAMPLE)
+ *va_arg(ap, double**) = td->td_smaxsamplevalue;
+ else
+ {
+ /* libtiff historially treats this as a single value. */
+ uint16 i;
+ double v = td->td_smaxsamplevalue[0];
+ for (i=1; i < td->td_samplesperpixel; ++i)
+ if( td->td_smaxsamplevalue[i] > v )
+ v = td->td_smaxsamplevalue[i];
+ *va_arg(ap, double*) = v;
+ }
+ break;
+ case TIFFTAG_XRESOLUTION:
+ *va_arg(ap, float*) = td->td_xresolution;
+ break;
+ case TIFFTAG_YRESOLUTION:
+ *va_arg(ap, float*) = td->td_yresolution;
+ break;
+ case TIFFTAG_PLANARCONFIG:
+ *va_arg(ap, uint16*) = td->td_planarconfig;
+ break;
+ case TIFFTAG_XPOSITION:
+ *va_arg(ap, float*) = td->td_xposition;
+ break;
+ case TIFFTAG_YPOSITION:
+ *va_arg(ap, float*) = td->td_yposition;
+ break;
+ case TIFFTAG_RESOLUTIONUNIT:
+ *va_arg(ap, uint16*) = td->td_resolutionunit;
+ break;
+ case TIFFTAG_PAGENUMBER:
+ *va_arg(ap, uint16*) = td->td_pagenumber[0];
+ *va_arg(ap, uint16*) = td->td_pagenumber[1];
+ break;
+ case TIFFTAG_HALFTONEHINTS:
+ *va_arg(ap, uint16*) = td->td_halftonehints[0];
+ *va_arg(ap, uint16*) = td->td_halftonehints[1];
+ break;
+ case TIFFTAG_COLORMAP:
+ *va_arg(ap, uint16**) = td->td_colormap[0];
+ *va_arg(ap, uint16**) = td->td_colormap[1];
+ *va_arg(ap, uint16**) = td->td_colormap[2];
+ break;
+ case TIFFTAG_STRIPOFFSETS:
+ case TIFFTAG_TILEOFFSETS:
+ _TIFFFillStriles( tif );
+ *va_arg(ap, uint64**) = td->td_stripoffset;
+ break;
+ case TIFFTAG_STRIPBYTECOUNTS:
+ case TIFFTAG_TILEBYTECOUNTS:
+ _TIFFFillStriles( tif );
+ *va_arg(ap, uint64**) = td->td_stripbytecount;
+ break;
+ case TIFFTAG_MATTEING:
+ *va_arg(ap, uint16*) =
+ (td->td_extrasamples == 1 &&
+ td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
+ break;
+ case TIFFTAG_EXTRASAMPLES:
+ *va_arg(ap, uint16*) = td->td_extrasamples;
+ *va_arg(ap, uint16**) = td->td_sampleinfo;
+ break;
+ case TIFFTAG_TILEWIDTH:
+ *va_arg(ap, uint32*) = td->td_tilewidth;
+ break;
+ case TIFFTAG_TILELENGTH:
+ *va_arg(ap, uint32*) = td->td_tilelength;
+ break;
+ case TIFFTAG_TILEDEPTH:
+ *va_arg(ap, uint32*) = td->td_tiledepth;
+ break;
+ case TIFFTAG_DATATYPE:
+ switch (td->td_sampleformat) {
+ case SAMPLEFORMAT_UINT:
+ *va_arg(ap, uint16*) = DATATYPE_UINT;
+ break;
+ case SAMPLEFORMAT_INT:
+ *va_arg(ap, uint16*) = DATATYPE_INT;
+ break;
+ case SAMPLEFORMAT_IEEEFP:
+ *va_arg(ap, uint16*) = DATATYPE_IEEEFP;
+ break;
+ case SAMPLEFORMAT_VOID:
+ *va_arg(ap, uint16*) = DATATYPE_VOID;
+ break;
+ }
+ break;
+ case TIFFTAG_SAMPLEFORMAT:
+ *va_arg(ap, uint16*) = td->td_sampleformat;
+ break;
+ case TIFFTAG_IMAGEDEPTH:
+ *va_arg(ap, uint32*) = td->td_imagedepth;
+ break;
+ case TIFFTAG_SUBIFD:
+ *va_arg(ap, uint16*) = td->td_nsubifd;
+ *va_arg(ap, uint64**) = td->td_subifd;
+ break;
+ case TIFFTAG_YCBCRPOSITIONING:
+ *va_arg(ap, uint16*) = td->td_ycbcrpositioning;
+ break;
+ case TIFFTAG_YCBCRSUBSAMPLING:
+ *va_arg(ap, uint16*) = td->td_ycbcrsubsampling[0];
+ *va_arg(ap, uint16*) = td->td_ycbcrsubsampling[1];
+ break;
+ case TIFFTAG_TRANSFERFUNCTION:
+ *va_arg(ap, uint16**) = td->td_transferfunction[0];
+ if (td->td_samplesperpixel - td->td_extrasamples > 1) {
+ *va_arg(ap, uint16**) = td->td_transferfunction[1];
+ *va_arg(ap, uint16**) = td->td_transferfunction[2];
+ }
+ break;
+ case TIFFTAG_REFERENCEBLACKWHITE:
+ *va_arg(ap, float**) = td->td_refblackwhite;
+ break;
+ case TIFFTAG_INKNAMES:
+ *va_arg(ap, char**) = td->td_inknames;
+ break;
+ default:
+ {
+ int i;
+
+ /*
+ * This can happen if multiple images are open
+ * with different codecs which have private
+ * tags. The global tag information table may
+ * then have tags that are valid for one file
+ * but not the other. If the client tries to
+ * get a tag that is not valid for the image's
+ * codec then we'll arrive here.
+ */
+ if( fip == NULL || fip->field_bit != FIELD_CUSTOM )
+ {
+ TIFFErrorExt(tif->tif_clientdata, "_TIFFVGetField",
+ "%s: Invalid %stag \"%s\" "
+ "(not supported by codec)",
+ tif->tif_name,
+ isPseudoTag(tag) ? "pseudo-" : "",
+ fip ? fip->field_name : "Unknown");
+ ret_val = 0;
+ break;
+ }
+
+ /*
+ * Do we have a custom value?
+ */
+ ret_val = 0;
+ for (i = 0; i < td->td_customValueCount; i++) {
+ TIFFTagValue *tv = td->td_customValues + i;
+
+ if (tv->info->field_tag != tag)
+ continue;
+
+ if (fip->field_passcount) {
+ if (fip->field_readcount == TIFF_VARIABLE2)
+ *va_arg(ap, uint32*) = (uint32)tv->count;
+ else /* Assume TIFF_VARIABLE */
+ *va_arg(ap, uint16*) = (uint16)tv->count;
+ *va_arg(ap, void **) = tv->value;
+ ret_val = 1;
+ } else if (fip->field_tag == TIFFTAG_DOTRANGE
+ && strcmp(fip->field_name,"DotRange") == 0) {
+ /* TODO: This is an evil exception and should not have been
+ handled this way ... likely best if we move it into
+ the directory structure with an explicit field in
+ libtiff 4.1 and assign it a FIELD_ value */
+ *va_arg(ap, uint16*) = ((uint16 *)tv->value)[0];
+ *va_arg(ap, uint16*) = ((uint16 *)tv->value)[1];
+ ret_val = 1;
+ } else {
+ if (fip->field_type == TIFF_ASCII
+ || fip->field_readcount == TIFF_VARIABLE
+ || fip->field_readcount == TIFF_VARIABLE2
+ || fip->field_readcount == TIFF_SPP
+ || tv->count > 1) {
+ *va_arg(ap, void **) = tv->value;
+ ret_val = 1;
+ } else {
+ char *val = (char *)tv->value;
+ assert( tv->count == 1 );
+ switch (fip->field_type) {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ *va_arg(ap, uint8*) =
+ *(uint8 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SBYTE:
+ *va_arg(ap, int8*) =
+ *(int8 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SHORT:
+ *va_arg(ap, uint16*) =
+ *(uint16 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SSHORT:
+ *va_arg(ap, int16*) =
+ *(int16 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_LONG:
+ case TIFF_IFD:
+ *va_arg(ap, uint32*) =
+ *(uint32 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SLONG:
+ *va_arg(ap, int32*) =
+ *(int32 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_LONG8:
+ case TIFF_IFD8:
+ *va_arg(ap, uint64*) =
+ *(uint64 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SLONG8:
+ *va_arg(ap, int64*) =
+ *(int64 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ *va_arg(ap, float*) =
+ *(float *)val;
+ ret_val = 1;
+ break;
+ case TIFF_DOUBLE:
+ *va_arg(ap, double*) =
+ *(double *)val;
+ ret_val = 1;
+ break;
+ default:
+ ret_val = 0;
+ break;
+ }
+ }
+ }
+ break;
+ }
+ }
+ }
+ return(ret_val);
+}
+
+/*
+ * Return the value of a field in the
+ * internal directory structure.
+ */
+int
+TIFFGetField(TIFF* tif, uint32 tag, ...)
+{
+ int status;
+ va_list ap;
+
+ va_start(ap, tag);
+ status = TIFFVGetField(tif, tag, ap);
+ va_end(ap);
+ return (status);
+}
+
+/*
+ * Like TIFFGetField, but taking a varargs
+ * parameter list. This routine is useful
+ * for building higher-level interfaces on
+ * top of the library.
+ */
+int
+TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
+ return (fip && (isPseudoTag(tag) || TIFFFieldSet(tif, fip->field_bit)) ?
+ (*tif->tif_tagmethods.vgetfield)(tif, tag, ap) : 0);
+}
+
+#define CleanupField(member) { \
+ if (td->member) { \
+ _TIFFfree(td->member); \
+ td->member = 0; \
+ } \
+}
+
+/*
+ * Release storage associated with a directory.
+ */
+void
+TIFFFreeDirectory(TIFF* tif)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+ int i;
+
+ _TIFFmemset(td->td_fieldsset, 0, FIELD_SETLONGS);
+ CleanupField(td_sminsamplevalue);
+ CleanupField(td_smaxsamplevalue);
+ CleanupField(td_colormap[0]);
+ CleanupField(td_colormap[1]);
+ CleanupField(td_colormap[2]);
+ CleanupField(td_sampleinfo);
+ CleanupField(td_subifd);
+ CleanupField(td_inknames);
+ CleanupField(td_refblackwhite);
+ CleanupField(td_transferfunction[0]);
+ CleanupField(td_transferfunction[1]);
+ CleanupField(td_transferfunction[2]);
+ CleanupField(td_stripoffset);
+ CleanupField(td_stripbytecount);
+ TIFFClrFieldBit(tif, FIELD_YCBCRSUBSAMPLING);
+ TIFFClrFieldBit(tif, FIELD_YCBCRPOSITIONING);
+
+ /* Cleanup custom tag values */
+ for( i = 0; i < td->td_customValueCount; i++ ) {
+ if (td->td_customValues[i].value)
+ _TIFFfree(td->td_customValues[i].value);
+ }
+
+ td->td_customValueCount = 0;
+ CleanupField(td_customValues);
+
+#if defined(DEFER_STRILE_LOAD)
+ _TIFFmemset( &(td->td_stripoffset_entry), 0, sizeof(TIFFDirEntry));
+ _TIFFmemset( &(td->td_stripbytecount_entry), 0, sizeof(TIFFDirEntry));
+#endif
+}
+#undef CleanupField
+
+/*
+ * Client Tag extension support (from Niles Ritter).
+ */
+static TIFFExtendProc _TIFFextender = (TIFFExtendProc) NULL;
+
+TIFFExtendProc
+TIFFSetTagExtender(TIFFExtendProc extender)
+{
+ TIFFExtendProc prev = _TIFFextender;
+ _TIFFextender = extender;
+ return (prev);
+}
+
+/*
+ * Setup for a new directory. Should we automatically call
+ * TIFFWriteDirectory() if the current one is dirty?
+ *
+ * The newly created directory will not exist on the file till
+ * TIFFWriteDirectory(), TIFFFlush() or TIFFClose() is called.
+ */
+int
+TIFFCreateDirectory(TIFF* tif)
+{
+ TIFFDefaultDirectory(tif);
+ tif->tif_diroff = 0;
+ tif->tif_nextdiroff = 0;
+ tif->tif_curoff = 0;
+ tif->tif_row = (uint32) -1;
+ tif->tif_curstrip = (uint32) -1;
+
+ return 0;
+}
+
+int
+TIFFCreateCustomDirectory(TIFF* tif, const TIFFFieldArray* infoarray)
+{
+ TIFFDefaultDirectory(tif);
+
+ /*
+ * Reset the field definitions to match the application provided list.
+ * Hopefully TIFFDefaultDirectory() won't have done anything irreversable
+ * based on it's assumption this is an image directory.
+ */
+ _TIFFSetupFields(tif, infoarray);
+
+ tif->tif_diroff = 0;
+ tif->tif_nextdiroff = 0;
+ tif->tif_curoff = 0;
+ tif->tif_row = (uint32) -1;
+ tif->tif_curstrip = (uint32) -1;
+
+ return 0;
+}
+
+int
+TIFFCreateEXIFDirectory(TIFF* tif)
+{
+ const TIFFFieldArray* exifFieldArray;
+ exifFieldArray = _TIFFGetExifFields();
+ return TIFFCreateCustomDirectory(tif, exifFieldArray);
+}
+
+/*
+ * Setup a default directory structure.
+ */
+int
+TIFFDefaultDirectory(TIFF* tif)
+{
+ register TIFFDirectory* td = &tif->tif_dir;
+ const TIFFFieldArray* tiffFieldArray;
+
+ tiffFieldArray = _TIFFGetFields();
+ _TIFFSetupFields(tif, tiffFieldArray);
+
+ _TIFFmemset(td, 0, sizeof (*td));
+ td->td_fillorder = FILLORDER_MSB2LSB;
+ td->td_bitspersample = 1;
+ td->td_threshholding = THRESHHOLD_BILEVEL;
+ td->td_orientation = ORIENTATION_TOPLEFT;
+ td->td_samplesperpixel = 1;
+ td->td_rowsperstrip = (uint32) -1;
+ td->td_tilewidth = 0;
+ td->td_tilelength = 0;
+ td->td_tiledepth = 1;
+ td->td_stripbytecountsorted = 1; /* Our own arrays always sorted. */
+ td->td_resolutionunit = RESUNIT_INCH;
+ td->td_sampleformat = SAMPLEFORMAT_UINT;
+ td->td_imagedepth = 1;
+ td->td_ycbcrsubsampling[0] = 2;
+ td->td_ycbcrsubsampling[1] = 2;
+ td->td_ycbcrpositioning = YCBCRPOSITION_CENTERED;
+ tif->tif_postdecode = _TIFFNoPostDecode;
+ tif->tif_foundfield = NULL;
+ tif->tif_tagmethods.vsetfield = _TIFFVSetField;
+ tif->tif_tagmethods.vgetfield = _TIFFVGetField;
+ tif->tif_tagmethods.printdir = NULL;
+ /*
+ * Give client code a chance to install their own
+ * tag extensions & methods, prior to compression overloads.
+ */
+ if (_TIFFextender)
+ (*_TIFFextender)(tif);
+ (void) TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
+ /*
+ * NB: The directory is marked dirty as a result of setting
+ * up the default compression scheme. However, this really
+ * isn't correct -- we want TIFF_DIRTYDIRECT to be set only
+ * if the user does something. We could just do the setup
+ * by hand, but it seems better to use the normal mechanism
+ * (i.e. TIFFSetField).
+ */
+ tif->tif_flags &= ~TIFF_DIRTYDIRECT;
+
+ /*
+ * As per http://bugzilla.remotesensing.org/show_bug.cgi?id=19
+ * we clear the ISTILED flag when setting up a new directory.
+ * Should we also be clearing stuff like INSUBIFD?
+ */
+ tif->tif_flags &= ~TIFF_ISTILED;
+
+ return (1);
+}
+
+static int
+TIFFAdvanceDirectory(TIFF* tif, uint64* nextdir, uint64* off)
+{
+ static const char module[] = "TIFFAdvanceDirectory";
+ if (isMapped(tif))
+ {
+ uint64 poff=*nextdir;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ tmsize_t poffa,poffb,poffc,poffd;
+ uint16 dircount;
+ uint32 nextdir32;
+ poffa=(tmsize_t)poff;
+ poffb=poffa+sizeof(uint16);
+ if (((uint64)poffa!=poff)||(poffb<poffa)||(poffb<(tmsize_t)sizeof(uint16))||(poffb>tif->tif_size))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory count");
+ return(0);
+ }
+ _TIFFmemcpy(&dircount,tif->tif_base+poffa,sizeof(uint16));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(&dircount);
+ poffc=poffb+dircount*12;
+ poffd=poffc+sizeof(uint32);
+ if ((poffc<poffb)||(poffc<dircount*12)||(poffd<poffc)||(poffd<(tmsize_t)sizeof(uint32))||(poffd>tif->tif_size))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory link");
+ return(0);
+ }
+ if (off!=NULL)
+ *off=(uint64)poffc;
+ _TIFFmemcpy(&nextdir32,tif->tif_base+poffc,sizeof(uint32));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&nextdir32);
+ *nextdir=nextdir32;
+ }
+ else
+ {
+ tmsize_t poffa,poffb,poffc,poffd;
+ uint64 dircount64;
+ uint16 dircount16;
+ poffa=(tmsize_t)poff;
+ poffb=poffa+sizeof(uint64);
+ if (((uint64)poffa!=poff)||(poffb<poffa)||(poffb<(tmsize_t)sizeof(uint64))||(poffb>tif->tif_size))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory count");
+ return(0);
+ }
+ _TIFFmemcpy(&dircount64,tif->tif_base+poffa,sizeof(uint64));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ if (dircount64>0xFFFF)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Sanity check on directory count failed");
+ return(0);
+ }
+ dircount16=(uint16)dircount64;
+ poffc=poffb+dircount16*20;
+ poffd=poffc+sizeof(uint64);
+ if ((poffc<poffb)||(poffc<dircount16*20)||(poffd<poffc)||(poffd<(tmsize_t)sizeof(uint64))||(poffd>tif->tif_size))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory link");
+ return(0);
+ }
+ if (off!=NULL)
+ *off=(uint64)poffc;
+ _TIFFmemcpy(nextdir,tif->tif_base+poffc,sizeof(uint64));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(nextdir);
+ }
+ return(1);
+ }
+ else
+ {
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint16 dircount;
+ uint32 nextdir32;
+ if (!SeekOK(tif, *nextdir) ||
+ !ReadOK(tif, &dircount, sizeof (uint16))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count",
+ tif->tif_name);
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&dircount);
+ if (off != NULL)
+ *off = TIFFSeekFile(tif,
+ dircount*12, SEEK_CUR);
+ else
+ (void) TIFFSeekFile(tif,
+ dircount*12, SEEK_CUR);
+ if (!ReadOK(tif, &nextdir32, sizeof (uint32))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory link",
+ tif->tif_name);
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&nextdir32);
+ *nextdir=nextdir32;
+ }
+ else
+ {
+ uint64 dircount64;
+ uint16 dircount16;
+ if (!SeekOK(tif, *nextdir) ||
+ !ReadOK(tif, &dircount64, sizeof (uint64))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count",
+ tif->tif_name);
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ if (dircount64>0xFFFF)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory count");
+ return(0);
+ }
+ dircount16 = (uint16)dircount64;
+ if (off != NULL)
+ *off = TIFFSeekFile(tif,
+ dircount16*20, SEEK_CUR);
+ else
+ (void) TIFFSeekFile(tif,
+ dircount16*20, SEEK_CUR);
+ if (!ReadOK(tif, nextdir, sizeof (uint64))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory link",
+ tif->tif_name);
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(nextdir);
+ }
+ return (1);
+ }
+}
+
+/*
+ * Count the number of directories in a file.
+ */
+uint16
+TIFFNumberOfDirectories(TIFF* tif)
+{
+ uint64 nextdir;
+ uint16 n;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ nextdir = tif->tif_header.classic.tiff_diroff;
+ else
+ nextdir = tif->tif_header.big.tiff_diroff;
+ n = 0;
+ while (nextdir != 0 && TIFFAdvanceDirectory(tif, &nextdir, NULL))
+ n++;
+ return (n);
+}
+
+/*
+ * Set the n-th directory as the current directory.
+ * NB: Directories are numbered starting at 0.
+ */
+int
+TIFFSetDirectory(TIFF* tif, uint16 dirn)
+{
+ uint64 nextdir;
+ uint16 n;
+
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ nextdir = tif->tif_header.classic.tiff_diroff;
+ else
+ nextdir = tif->tif_header.big.tiff_diroff;
+ for (n = dirn; n > 0 && nextdir != 0; n--)
+ if (!TIFFAdvanceDirectory(tif, &nextdir, NULL))
+ return (0);
+ tif->tif_nextdiroff = nextdir;
+ /*
+ * Set curdir to the actual directory index. The
+ * -1 is because TIFFReadDirectory will increment
+ * tif_curdir after successfully reading the directory.
+ */
+ tif->tif_curdir = (dirn - n) - 1;
+ /*
+ * Reset tif_dirnumber counter and start new list of seen directories.
+ * We need this to prevent IFD loops.
+ */
+ tif->tif_dirnumber = 0;
+ return (TIFFReadDirectory(tif));
+}
+
+/*
+ * Set the current directory to be the directory
+ * located at the specified file offset. This interface
+ * is used mainly to access directories linked with
+ * the SubIFD tag (e.g. thumbnail images).
+ */
+int
+TIFFSetSubDirectory(TIFF* tif, uint64 diroff)
+{
+ tif->tif_nextdiroff = diroff;
+ /*
+ * Reset tif_dirnumber counter and start new list of seen directories.
+ * We need this to prevent IFD loops.
+ */
+ tif->tif_dirnumber = 0;
+ return (TIFFReadDirectory(tif));
+}
+
+/*
+ * Return file offset of the current directory.
+ */
+uint64
+TIFFCurrentDirOffset(TIFF* tif)
+{
+ return (tif->tif_diroff);
+}
+
+/*
+ * Return an indication of whether or not we are
+ * at the last directory in the file.
+ */
+int
+TIFFLastDirectory(TIFF* tif)
+{
+ return (tif->tif_nextdiroff == 0);
+}
+
+/*
+ * Unlink the specified directory from the directory chain.
+ */
+int
+TIFFUnlinkDirectory(TIFF* tif, uint16 dirn)
+{
+ static const char module[] = "TIFFUnlinkDirectory";
+ uint64 nextdir;
+ uint64 off;
+ uint16 n;
+
+ if (tif->tif_mode == O_RDONLY) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Can not unlink directory in read-only file");
+ return (0);
+ }
+ /*
+ * Go to the directory before the one we want
+ * to unlink and nab the offset of the link
+ * field we'll need to patch.
+ */
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ nextdir = tif->tif_header.classic.tiff_diroff;
+ off = 4;
+ }
+ else
+ {
+ nextdir = tif->tif_header.big.tiff_diroff;
+ off = 8;
+ }
+ for (n = dirn-1; n > 0; n--) {
+ if (nextdir == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Directory %d does not exist", dirn);
+ return (0);
+ }
+ if (!TIFFAdvanceDirectory(tif, &nextdir, &off))
+ return (0);
+ }
+ /*
+ * Advance to the directory to be unlinked and fetch
+ * the offset of the directory that follows.
+ */
+ if (!TIFFAdvanceDirectory(tif, &nextdir, NULL))
+ return (0);
+ /*
+ * Go back and patch the link field of the preceding
+ * directory to point to the offset of the directory
+ * that follows.
+ */
+ (void) TIFFSeekFile(tif, off, SEEK_SET);
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 nextdir32;
+ nextdir32=(uint32)nextdir;
+ assert((uint64)nextdir32==nextdir);
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&nextdir32);
+ if (!WriteOK(tif, &nextdir32, sizeof (uint32))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
+ return (0);
+ }
+ }
+ else
+ {
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&nextdir);
+ if (!WriteOK(tif, &nextdir, sizeof (uint64))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
+ return (0);
+ }
+ }
+ /*
+ * Leave directory state setup safely. We don't have
+ * facilities for doing inserting and removing directories,
+ * so it's safest to just invalidate everything. This
+ * means that the caller can only append to the directory
+ * chain.
+ */
+ (*tif->tif_cleanup)(tif);
+ if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
+ _TIFFfree(tif->tif_rawdata);
+ tif->tif_rawdata = NULL;
+ tif->tif_rawcc = 0;
+ tif->tif_rawdataoff = 0;
+ tif->tif_rawdataloaded = 0;
+ }
+ tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP|TIFF_POSTENCODE|TIFF_BUF4WRITE);
+ TIFFFreeDirectory(tif);
+ TIFFDefaultDirectory(tif);
+ tif->tif_diroff = 0; /* force link on next write */
+ tif->tif_nextdiroff = 0; /* next write must be at end */
+ tif->tif_curoff = 0;
+ tif->tif_row = (uint32) -1;
+ tif->tif_curstrip = (uint32) -1;
+ return (1);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_dir.h b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dir.h
new file mode 100644
index 0000000..6af5f3d
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dir.h
@@ -0,0 +1,308 @@
+/* $Id: tif_dir.h,v 1.54 2011-02-18 20:53:05 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFDIR_
+#define _TIFFDIR_
+/*
+ * ``Library-private'' Directory-related Definitions.
+ */
+
+typedef struct {
+ const TIFFField *info;
+ int count;
+ void *value;
+} TIFFTagValue;
+
+/*
+ * TIFF Image File Directories are comprised of a table of field
+ * descriptors of the form shown below. The table is sorted in
+ * ascending order by tag. The values associated with each entry are
+ * disjoint and may appear anywhere in the file (so long as they are
+ * placed on a word boundary).
+ *
+ * If the value is 4 bytes or less, in ClassicTIFF, or 8 bytes or less in
+ * BigTIFF, then it is placed in the offset field to save space. If so,
+ * it is left-justified in the offset field.
+ */
+typedef struct {
+ uint16 tdir_tag; /* see below */
+ uint16 tdir_type; /* data type; see below */
+ uint64 tdir_count; /* number of items; length in spec */
+ union {
+ uint16 toff_short;
+ uint32 toff_long;
+ uint64 toff_long8;
+ } tdir_offset; /* either offset or the data itself if fits */
+} TIFFDirEntry;
+
+/*
+ * Internal format of a TIFF directory entry.
+ */
+typedef struct {
+#define FIELD_SETLONGS 4
+ /* bit vector of fields that are set */
+ unsigned long td_fieldsset[FIELD_SETLONGS];
+
+ uint32 td_imagewidth, td_imagelength, td_imagedepth;
+ uint32 td_tilewidth, td_tilelength, td_tiledepth;
+ uint32 td_subfiletype;
+ uint16 td_bitspersample;
+ uint16 td_sampleformat;
+ uint16 td_compression;
+ uint16 td_photometric;
+ uint16 td_threshholding;
+ uint16 td_fillorder;
+ uint16 td_orientation;
+ uint16 td_samplesperpixel;
+ uint32 td_rowsperstrip;
+ uint16 td_minsamplevalue, td_maxsamplevalue;
+ double* td_sminsamplevalue;
+ double* td_smaxsamplevalue;
+ float td_xresolution, td_yresolution;
+ uint16 td_resolutionunit;
+ uint16 td_planarconfig;
+ float td_xposition, td_yposition;
+ uint16 td_pagenumber[2];
+ uint16* td_colormap[3];
+ uint16 td_halftonehints[2];
+ uint16 td_extrasamples;
+ uint16* td_sampleinfo;
+ /* even though the name is misleading, td_stripsperimage is the number
+ * of striles (=strips or tiles) per plane, and td_nstrips the total
+ * number of striles */
+ uint32 td_stripsperimage;
+ uint32 td_nstrips; /* size of offset & bytecount arrays */
+ uint64* td_stripoffset;
+ uint64* td_stripbytecount;
+ int td_stripbytecountsorted; /* is the bytecount array sorted ascending? */
+#if defined(DEFER_STRILE_LOAD)
+ TIFFDirEntry td_stripoffset_entry; /* for deferred loading */
+ TIFFDirEntry td_stripbytecount_entry; /* for deferred loading */
+#endif
+ uint16 td_nsubifd;
+ uint64* td_subifd;
+ /* YCbCr parameters */
+ uint16 td_ycbcrsubsampling[2];
+ uint16 td_ycbcrpositioning;
+ /* Colorimetry parameters */
+ uint16* td_transferfunction[3];
+ float* td_refblackwhite;
+ /* CMYK parameters */
+ int td_inknameslen;
+ char* td_inknames;
+
+ int td_customValueCount;
+ TIFFTagValue *td_customValues;
+} TIFFDirectory;
+
+/*
+ * Field flags used to indicate fields that have been set in a directory, and
+ * to reference fields when manipulating a directory.
+ */
+
+/*
+ * FIELD_IGNORE is used to signify tags that are to be processed but otherwise
+ * ignored. This permits antiquated tags to be quietly read and discarded.
+ * Note that a bit *is* allocated for ignored tags; this is understood by the
+ * directory reading logic which uses this fact to avoid special-case handling
+ */
+#define FIELD_IGNORE 0
+
+/* multi-item fields */
+#define FIELD_IMAGEDIMENSIONS 1
+#define FIELD_TILEDIMENSIONS 2
+#define FIELD_RESOLUTION 3
+#define FIELD_POSITION 4
+
+/* single-item fields */
+#define FIELD_SUBFILETYPE 5
+#define FIELD_BITSPERSAMPLE 6
+#define FIELD_COMPRESSION 7
+#define FIELD_PHOTOMETRIC 8
+#define FIELD_THRESHHOLDING 9
+#define FIELD_FILLORDER 10
+#define FIELD_ORIENTATION 15
+#define FIELD_SAMPLESPERPIXEL 16
+#define FIELD_ROWSPERSTRIP 17
+#define FIELD_MINSAMPLEVALUE 18
+#define FIELD_MAXSAMPLEVALUE 19
+#define FIELD_PLANARCONFIG 20
+#define FIELD_RESOLUTIONUNIT 22
+#define FIELD_PAGENUMBER 23
+#define FIELD_STRIPBYTECOUNTS 24
+#define FIELD_STRIPOFFSETS 25
+#define FIELD_COLORMAP 26
+#define FIELD_EXTRASAMPLES 31
+#define FIELD_SAMPLEFORMAT 32
+#define FIELD_SMINSAMPLEVALUE 33
+#define FIELD_SMAXSAMPLEVALUE 34
+#define FIELD_IMAGEDEPTH 35
+#define FIELD_TILEDEPTH 36
+#define FIELD_HALFTONEHINTS 37
+#define FIELD_YCBCRSUBSAMPLING 39
+#define FIELD_YCBCRPOSITIONING 40
+#define FIELD_REFBLACKWHITE 41
+#define FIELD_TRANSFERFUNCTION 44
+#define FIELD_INKNAMES 46
+#define FIELD_SUBIFD 49
+/* FIELD_CUSTOM (see tiffio.h) 65 */
+/* end of support for well-known tags; codec-private tags follow */
+#define FIELD_CODEC 66 /* base of codec-private tags */
+
+
+/*
+ * Pseudo-tags don't normally need field bits since they are not written to an
+ * output file (by definition). The library also has express logic to always
+ * query a codec for a pseudo-tag so allocating a field bit for one is a
+ * waste. If codec wants to promote the notion of a pseudo-tag being ``set''
+ * or ``unset'' then it can do using internal state flags without polluting
+ * the field bit space defined for real tags.
+ */
+#define FIELD_PSEUDO 0
+
+#define FIELD_LAST (32*FIELD_SETLONGS-1)
+
+#define BITn(n) (((unsigned long)1L)<<((n)&0x1f))
+#define BITFIELDn(tif, n) ((tif)->tif_dir.td_fieldsset[(n)/32])
+#define TIFFFieldSet(tif, field) (BITFIELDn(tif, field) & BITn(field))
+#define TIFFSetFieldBit(tif, field) (BITFIELDn(tif, field) |= BITn(field))
+#define TIFFClrFieldBit(tif, field) (BITFIELDn(tif, field) &= ~BITn(field))
+
+#define FieldSet(fields, f) (fields[(f)/32] & BITn(f))
+#define ResetFieldBit(fields, f) (fields[(f)/32] &= ~BITn(f))
+
+typedef enum {
+ TIFF_SETGET_UNDEFINED = 0,
+ TIFF_SETGET_ASCII = 1,
+ TIFF_SETGET_UINT8 = 2,
+ TIFF_SETGET_SINT8 = 3,
+ TIFF_SETGET_UINT16 = 4,
+ TIFF_SETGET_SINT16 = 5,
+ TIFF_SETGET_UINT32 = 6,
+ TIFF_SETGET_SINT32 = 7,
+ TIFF_SETGET_UINT64 = 8,
+ TIFF_SETGET_SINT64 = 9,
+ TIFF_SETGET_FLOAT = 10,
+ TIFF_SETGET_DOUBLE = 11,
+ TIFF_SETGET_IFD8 = 12,
+ TIFF_SETGET_INT = 13,
+ TIFF_SETGET_UINT16_PAIR = 14,
+ TIFF_SETGET_C0_ASCII = 15,
+ TIFF_SETGET_C0_UINT8 = 16,
+ TIFF_SETGET_C0_SINT8 = 17,
+ TIFF_SETGET_C0_UINT16 = 18,
+ TIFF_SETGET_C0_SINT16 = 19,
+ TIFF_SETGET_C0_UINT32 = 20,
+ TIFF_SETGET_C0_SINT32 = 21,
+ TIFF_SETGET_C0_UINT64 = 22,
+ TIFF_SETGET_C0_SINT64 = 23,
+ TIFF_SETGET_C0_FLOAT = 24,
+ TIFF_SETGET_C0_DOUBLE = 25,
+ TIFF_SETGET_C0_IFD8 = 26,
+ TIFF_SETGET_C16_ASCII = 27,
+ TIFF_SETGET_C16_UINT8 = 28,
+ TIFF_SETGET_C16_SINT8 = 29,
+ TIFF_SETGET_C16_UINT16 = 30,
+ TIFF_SETGET_C16_SINT16 = 31,
+ TIFF_SETGET_C16_UINT32 = 32,
+ TIFF_SETGET_C16_SINT32 = 33,
+ TIFF_SETGET_C16_UINT64 = 34,
+ TIFF_SETGET_C16_SINT64 = 35,
+ TIFF_SETGET_C16_FLOAT = 36,
+ TIFF_SETGET_C16_DOUBLE = 37,
+ TIFF_SETGET_C16_IFD8 = 38,
+ TIFF_SETGET_C32_ASCII = 39,
+ TIFF_SETGET_C32_UINT8 = 40,
+ TIFF_SETGET_C32_SINT8 = 41,
+ TIFF_SETGET_C32_UINT16 = 42,
+ TIFF_SETGET_C32_SINT16 = 43,
+ TIFF_SETGET_C32_UINT32 = 44,
+ TIFF_SETGET_C32_SINT32 = 45,
+ TIFF_SETGET_C32_UINT64 = 46,
+ TIFF_SETGET_C32_SINT64 = 47,
+ TIFF_SETGET_C32_FLOAT = 48,
+ TIFF_SETGET_C32_DOUBLE = 49,
+ TIFF_SETGET_C32_IFD8 = 50,
+ TIFF_SETGET_OTHER = 51
+} TIFFSetGetFieldType;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+extern const TIFFFieldArray* _TIFFGetFields(void);
+extern const TIFFFieldArray* _TIFFGetExifFields(void);
+extern void _TIFFSetupFields(TIFF* tif, const TIFFFieldArray* infoarray);
+extern void _TIFFPrintFieldInfo(TIFF*, FILE*);
+
+extern int _TIFFFillStriles(TIFF*);
+
+typedef enum {
+ tfiatImage,
+ tfiatExif,
+ tfiatOther
+} TIFFFieldArrayType;
+
+struct _TIFFFieldArray {
+ TIFFFieldArrayType type; /* array type, will be used to determine if IFD is image and such */
+ uint32 allocated_size; /* 0 if array is constant, other if modified by future definition extension support */
+ uint32 count; /* number of elements in fields array */
+ TIFFField* fields; /* actual field info */
+};
+
+struct _TIFFField {
+ uint32 field_tag; /* field's tag */
+ short field_readcount; /* read count/TIFF_VARIABLE/TIFF_SPP */
+ short field_writecount; /* write count/TIFF_VARIABLE */
+ TIFFDataType field_type; /* type of associated data */
+ uint32 reserved; /* reserved for future extension */
+ TIFFSetGetFieldType set_field_type; /* type to be passed to TIFFSetField */
+ TIFFSetGetFieldType get_field_type; /* type to be passed to TIFFGetField */
+ unsigned short field_bit; /* bit in fieldsset bit vector */
+ unsigned char field_oktochange; /* if true, can change while writing */
+ unsigned char field_passcount; /* if true, pass dir count on set */
+ char* field_name; /* ASCII name */
+ TIFFFieldArray* field_subfields; /* if field points to child ifds, child ifd field definition array */
+};
+
+extern int _TIFFMergeFields(TIFF*, const TIFFField[], uint32);
+extern const TIFFField* _TIFFFindOrRegisterField(TIFF *, uint32, TIFFDataType);
+extern TIFFField* _TIFFCreateAnonField(TIFF *, uint32, TIFFDataType);
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* _TIFFDIR_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirinfo.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirinfo.c
new file mode 100644
index 0000000..5f28d23
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirinfo.c
@@ -0,0 +1,978 @@
+/* $Id: tif_dirinfo.c,v 1.117 2012-08-19 16:56:34 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Core Directory Tag Support.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include <stdlib.h>
+
+/*
+ * NOTE: THIS ARRAY IS ASSUMED TO BE SORTED BY TAG.
+ *
+ * NOTE: The second field (field_readcount) and third field (field_writecount)
+ * sometimes use the values TIFF_VARIABLE (-1), TIFF_VARIABLE2 (-3)
+ * and TIFF_SPP (-2). The macros should be used but would throw off
+ * the formatting of the code, so please interprete the -1, -2 and -3
+ * values accordingly.
+ */
+
+static TIFFFieldArray tiffFieldArray;
+static TIFFFieldArray exifFieldArray;
+
+static TIFFField
+tiffFields[] = {
+ { TIFFTAG_SUBFILETYPE, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_SUBFILETYPE, 1, 0, "SubfileType", NULL },
+ { TIFFTAG_OSUBFILETYPE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_SUBFILETYPE, 1, 0, "OldSubfileType", NULL },
+ { TIFFTAG_IMAGEWIDTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_IMAGEDIMENSIONS, 0, 0, "ImageWidth", NULL },
+ { TIFFTAG_IMAGELENGTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_IMAGEDIMENSIONS, 1, 0, "ImageLength", NULL },
+ { TIFFTAG_BITSPERSAMPLE, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_BITSPERSAMPLE, 0, 0, "BitsPerSample", NULL },
+ { TIFFTAG_COMPRESSION, -1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_COMPRESSION, 0, 0, "Compression", NULL },
+ { TIFFTAG_PHOTOMETRIC, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_PHOTOMETRIC, 0, 0, "PhotometricInterpretation", NULL },
+ { TIFFTAG_THRESHHOLDING, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_THRESHHOLDING, 1, 0, "Threshholding", NULL },
+ { TIFFTAG_CELLWIDTH, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "CellWidth", NULL },
+ { TIFFTAG_CELLLENGTH, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "CellLength", NULL },
+ { TIFFTAG_FILLORDER, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_FILLORDER, 0, 0, "FillOrder", NULL },
+ { TIFFTAG_DOCUMENTNAME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DocumentName", NULL },
+ { TIFFTAG_IMAGEDESCRIPTION, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageDescription", NULL },
+ { TIFFTAG_MAKE, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Make", NULL },
+ { TIFFTAG_MODEL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Model", NULL },
+ { TIFFTAG_STRIPOFFSETS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPOFFSETS, 0, 0, "StripOffsets", NULL },
+ { TIFFTAG_ORIENTATION, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_ORIENTATION, 0, 0, "Orientation", NULL },
+ { TIFFTAG_SAMPLESPERPIXEL, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_SAMPLESPERPIXEL, 0, 0, "SamplesPerPixel", NULL },
+ { TIFFTAG_ROWSPERSTRIP, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_ROWSPERSTRIP, 0, 0, "RowsPerStrip", NULL },
+ { TIFFTAG_STRIPBYTECOUNTS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPBYTECOUNTS, 0, 0, "StripByteCounts", NULL },
+ { TIFFTAG_MINSAMPLEVALUE, -2, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_MINSAMPLEVALUE, 1, 0, "MinSampleValue", NULL },
+ { TIFFTAG_MAXSAMPLEVALUE, -2, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_MAXSAMPLEVALUE, 1, 0, "MaxSampleValue", NULL },
+ { TIFFTAG_XRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "XResolution", NULL },
+ { TIFFTAG_YRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "YResolution", NULL },
+ { TIFFTAG_PLANARCONFIG, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_PLANARCONFIG, 0, 0, "PlanarConfiguration", NULL },
+ { TIFFTAG_PAGENAME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PageName", NULL },
+ { TIFFTAG_XPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "XPosition", NULL },
+ { TIFFTAG_YPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "YPosition", NULL },
+ { TIFFTAG_FREEOFFSETS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 0, 0, "FreeOffsets", NULL },
+ { TIFFTAG_FREEBYTECOUNTS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 0, 0, "FreeByteCounts", NULL },
+ { TIFFTAG_GRAYRESPONSEUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "GrayResponseUnit", NULL },
+ { TIFFTAG_GRAYRESPONSECURVE, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "GrayResponseCurve", NULL },
+ { TIFFTAG_RESOLUTIONUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTIONUNIT, 1, 0, "ResolutionUnit", NULL },
+ { TIFFTAG_PAGENUMBER, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_UINT16_PAIR, TIFF_SETGET_UNDEFINED, FIELD_PAGENUMBER, 1, 0, "PageNumber", NULL },
+ { TIFFTAG_COLORRESPONSEUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "ColorResponseUnit", NULL },
+ { TIFFTAG_TRANSFERFUNCTION, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_OTHER, TIFF_SETGET_UNDEFINED, FIELD_TRANSFERFUNCTION, 1, 0, "TransferFunction", NULL },
+ { TIFFTAG_SOFTWARE, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Software", NULL },
+ { TIFFTAG_DATETIME, 20, 20, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DateTime", NULL },
+ { TIFFTAG_ARTIST, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Artist", NULL },
+ { TIFFTAG_HOSTCOMPUTER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "HostComputer", NULL },
+ { TIFFTAG_WHITEPOINT, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "WhitePoint", NULL },
+ { TIFFTAG_PRIMARYCHROMATICITIES, 6, 6, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PrimaryChromaticities", NULL },
+ { TIFFTAG_COLORMAP, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_OTHER, TIFF_SETGET_UNDEFINED, FIELD_COLORMAP, 1, 0, "ColorMap", NULL },
+ { TIFFTAG_HALFTONEHINTS, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_UINT16_PAIR, TIFF_SETGET_UNDEFINED, FIELD_HALFTONEHINTS, 1, 0, "HalftoneHints", NULL },
+ { TIFFTAG_TILEWIDTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_TILEDIMENSIONS, 0, 0, "TileWidth", NULL },
+ { TIFFTAG_TILELENGTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_TILEDIMENSIONS, 0, 0, "TileLength", NULL },
+ { TIFFTAG_TILEOFFSETS, -1, 1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPOFFSETS, 0, 0, "TileOffsets", NULL },
+ { TIFFTAG_TILEBYTECOUNTS, -1, 1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPBYTECOUNTS, 0, 0, "TileByteCounts", NULL },
+ { TIFFTAG_SUBIFD, -1, -1, TIFF_IFD8, 0, TIFF_SETGET_C16_IFD8, TIFF_SETGET_UNDEFINED, FIELD_SUBIFD, 1, 1, "SubIFD", &tiffFieldArray },
+ { TIFFTAG_INKSET, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "InkSet", NULL },
+ { TIFFTAG_INKNAMES, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_C16_ASCII, TIFF_SETGET_UNDEFINED, FIELD_INKNAMES, 1, 1, "InkNames", NULL },
+ { TIFFTAG_NUMBEROFINKS, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "NumberOfInks", NULL },
+ { TIFFTAG_DOTRANGE, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_UINT16_PAIR, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DotRange", NULL },
+ { TIFFTAG_TARGETPRINTER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "TargetPrinter", NULL },
+ { TIFFTAG_EXTRASAMPLES, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_EXTRASAMPLES, 0, 1, "ExtraSamples", NULL },
+ { TIFFTAG_SAMPLEFORMAT, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_SAMPLEFORMAT, 0, 0, "SampleFormat", NULL },
+ { TIFFTAG_SMINSAMPLEVALUE, -2, -1, TIFF_ANY, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_SMINSAMPLEVALUE, 1, 0, "SMinSampleValue", NULL },
+ { TIFFTAG_SMAXSAMPLEVALUE, -2, -1, TIFF_ANY, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_SMAXSAMPLEVALUE, 1, 0, "SMaxSampleValue", NULL },
+ { TIFFTAG_CLIPPATH, -1, -3, TIFF_BYTE, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ClipPath", NULL },
+ { TIFFTAG_XCLIPPATHUNITS, 1, 1, TIFF_SLONG, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "XClipPathUnits", NULL },
+ { TIFFTAG_XCLIPPATHUNITS, 1, 1, TIFF_SBYTE, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "XClipPathUnits", NULL },
+ { TIFFTAG_YCLIPPATHUNITS, 1, 1, TIFF_SLONG, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "YClipPathUnits", NULL },
+ { TIFFTAG_YCBCRCOEFFICIENTS, 3, 3, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "YCbCrCoefficients", NULL },
+ { TIFFTAG_YCBCRSUBSAMPLING, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_UINT16_PAIR, TIFF_SETGET_UNDEFINED, FIELD_YCBCRSUBSAMPLING, 0, 0, "YCbCrSubsampling", NULL },
+ { TIFFTAG_YCBCRPOSITIONING, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_YCBCRPOSITIONING, 0, 0, "YCbCrPositioning", NULL },
+ { TIFFTAG_REFERENCEBLACKWHITE, 6, 6, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_REFBLACKWHITE, 1, 0, "ReferenceBlackWhite", NULL },
+ { TIFFTAG_XMLPACKET, -3, -3, TIFF_BYTE, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "XMLPacket", NULL },
+ /* begin SGI tags */
+ { TIFFTAG_MATTEING, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_EXTRASAMPLES, 0, 0, "Matteing", NULL },
+ { TIFFTAG_DATATYPE, -2, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_SAMPLEFORMAT, 0, 0, "DataType", NULL },
+ { TIFFTAG_IMAGEDEPTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_IMAGEDEPTH, 0, 0, "ImageDepth", NULL },
+ { TIFFTAG_TILEDEPTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_TILEDEPTH, 0, 0, "TileDepth", NULL },
+ /* end SGI tags */
+ /* begin Pixar tags */
+ { TIFFTAG_PIXAR_IMAGEFULLWIDTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageFullWidth", NULL },
+ { TIFFTAG_PIXAR_IMAGEFULLLENGTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageFullLength", NULL },
+ { TIFFTAG_PIXAR_TEXTUREFORMAT, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "TextureFormat", NULL },
+ { TIFFTAG_PIXAR_WRAPMODES, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "TextureWrapModes", NULL },
+ { TIFFTAG_PIXAR_FOVCOT, 1, 1, TIFF_FLOAT, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FieldOfViewCotangent", NULL },
+ { TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN, 16, 16, TIFF_FLOAT, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MatrixWorldToScreen", NULL },
+ { TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA, 16, 16, TIFF_FLOAT, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MatrixWorldToCamera", NULL },
+ { TIFFTAG_COPYRIGHT, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Copyright", NULL },
+ /* end Pixar tags */
+ { TIFFTAG_RICHTIFFIPTC, -3, -3, TIFF_LONG, 0, TIFF_SETGET_C32_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "RichTIFFIPTC", NULL },
+ { TIFFTAG_PHOTOSHOP, -3, -3, TIFF_BYTE, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "Photoshop", NULL },
+ { TIFFTAG_EXIFIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "EXIFIFDOffset", &exifFieldArray },
+ { TIFFTAG_ICCPROFILE, -3, -3, TIFF_UNDEFINED, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ICC Profile", NULL },
+ { TIFFTAG_GPSIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "GPSIFDOffset", NULL },
+ { TIFFTAG_FAXRECVPARAMS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_CUSTOM, TRUE, FALSE, "FaxRecvParams", NULL },
+ { TIFFTAG_FAXSUBADDRESS, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_ASCII, FIELD_CUSTOM, TRUE, FALSE, "FaxSubAddress", NULL },
+ { TIFFTAG_FAXRECVTIME, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_CUSTOM, TRUE, FALSE, "FaxRecvTime", NULL },
+ { TIFFTAG_FAXDCS, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_ASCII, FIELD_CUSTOM, TRUE, FALSE, "FaxDcs", NULL },
+ { TIFFTAG_STONITS, 1, 1, TIFF_DOUBLE, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "StoNits", NULL },
+ { TIFFTAG_INTEROPERABILITYIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "InteroperabilityIFDOffset", NULL },
+ /* begin DNG tags */
+ { TIFFTAG_DNGVERSION, 4, 4, TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DNGVersion", NULL },
+ { TIFFTAG_DNGBACKWARDVERSION, 4, 4, TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DNGBackwardVersion", NULL },
+ { TIFFTAG_UNIQUECAMERAMODEL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "UniqueCameraModel", NULL },
+ { TIFFTAG_LOCALIZEDCAMERAMODEL, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "LocalizedCameraModel", NULL },
+ { TIFFTAG_CFAPLANECOLOR, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CFAPlaneColor", NULL },
+ { TIFFTAG_CFALAYOUT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CFALayout", NULL },
+ { TIFFTAG_LINEARIZATIONTABLE, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "LinearizationTable", NULL },
+ { TIFFTAG_BLACKLEVELREPEATDIM, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BlackLevelRepeatDim", NULL },
+ { TIFFTAG_BLACKLEVEL, -1, -1, TIFF_RATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "BlackLevel", NULL },
+ { TIFFTAG_BLACKLEVELDELTAH, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "BlackLevelDeltaH", NULL },
+ { TIFFTAG_BLACKLEVELDELTAV, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "BlackLevelDeltaV", NULL },
+ { TIFFTAG_WHITELEVEL, -1, -1, TIFF_LONG, 0, TIFF_SETGET_C16_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "WhiteLevel", NULL },
+ { TIFFTAG_DEFAULTSCALE, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultScale", NULL },
+ { TIFFTAG_BESTQUALITYSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BestQualityScale", NULL },
+ { TIFFTAG_DEFAULTCROPORIGIN, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultCropOrigin", NULL },
+ { TIFFTAG_DEFAULTCROPSIZE, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultCropSize", NULL },
+ { TIFFTAG_COLORMATRIX1, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ColorMatrix1", NULL },
+ { TIFFTAG_COLORMATRIX2, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ColorMatrix2", NULL },
+ { TIFFTAG_CAMERACALIBRATION1, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CameraCalibration1", NULL },
+ { TIFFTAG_CAMERACALIBRATION2, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CameraCalibration2", NULL },
+ { TIFFTAG_REDUCTIONMATRIX1, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ReductionMatrix1", NULL },
+ { TIFFTAG_REDUCTIONMATRIX2, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ReductionMatrix2", NULL },
+ { TIFFTAG_ANALOGBALANCE, -1, -1, TIFF_RATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AnalogBalance", NULL },
+ { TIFFTAG_ASSHOTNEUTRAL, -1, -1, TIFF_RATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AsShotNeutral", NULL },
+ { TIFFTAG_ASSHOTWHITEXY, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "AsShotWhiteXY", NULL },
+ { TIFFTAG_BASELINEEXPOSURE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineExposure", NULL },
+ { TIFFTAG_BASELINENOISE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineNoise", NULL },
+ { TIFFTAG_BASELINESHARPNESS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineSharpness", NULL },
+ { TIFFTAG_BAYERGREENSPLIT, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BayerGreenSplit", NULL },
+ { TIFFTAG_LINEARRESPONSELIMIT, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "LinearResponseLimit", NULL },
+ { TIFFTAG_CAMERASERIALNUMBER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CameraSerialNumber", NULL },
+ { TIFFTAG_LENSINFO, 4, 4, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "LensInfo", NULL },
+ { TIFFTAG_CHROMABLURRADIUS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ChromaBlurRadius", NULL },
+ { TIFFTAG_ANTIALIASSTRENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "AntiAliasStrength", NULL },
+ { TIFFTAG_SHADOWSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ShadowScale", NULL },
+ { TIFFTAG_DNGPRIVATEDATA, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "DNGPrivateData", NULL },
+ { TIFFTAG_MAKERNOTESAFETY, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "MakerNoteSafety", NULL },
+ { TIFFTAG_CALIBRATIONILLUMINANT1, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CalibrationIlluminant1", NULL },
+ { TIFFTAG_CALIBRATIONILLUMINANT2, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CalibrationIlluminant2", NULL },
+ { TIFFTAG_RAWDATAUNIQUEID, 16, 16, TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "RawDataUniqueID", NULL },
+ { TIFFTAG_ORIGINALRAWFILENAME, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "OriginalRawFileName", NULL },
+ { TIFFTAG_ORIGINALRAWFILEDATA, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "OriginalRawFileData", NULL },
+ { TIFFTAG_ACTIVEAREA, 4, 4, TIFF_LONG, 0, TIFF_SETGET_C0_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ActiveArea", NULL },
+ { TIFFTAG_MASKEDAREAS, -1, -1, TIFF_LONG, 0, TIFF_SETGET_C16_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "MaskedAreas", NULL },
+ { TIFFTAG_ASSHOTICCPROFILE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AsShotICCProfile", NULL },
+ { TIFFTAG_ASSHOTPREPROFILEMATRIX, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AsShotPreProfileMatrix", NULL },
+ { TIFFTAG_CURRENTICCPROFILE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CurrentICCProfile", NULL },
+ { TIFFTAG_CURRENTPREPROFILEMATRIX, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CurrentPreProfileMatrix", NULL },
+ { TIFFTAG_PERSAMPLE, 0, 0, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "PerSample", NULL},
+ /* end DNG tags */
+ /* begin TIFF/FX tags */
+ { TIFFTAG_INDEXED, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "Indexed" },
+ { TIFFTAG_GLOBALPARAMETERSIFD, 1, 1, TIFF_IFD, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "GlobalParametersIFD", NULL },
+ { TIFFTAG_PROFILETYPE, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ProfileType", NULL },
+ { TIFFTAG_FAXPROFILE, 1, 1, TIFF_BYTE, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "FaxProfile", NULL },
+ { TIFFTAG_CODINGMETHODS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CodingMethods", NULL },
+ { TIFFTAG_VERSIONYEAR, 4, 4, TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "VersionYear", NULL },
+ { TIFFTAG_MODENUMBER, 1, 1, TIFF_BYTE, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ModeNumber", NULL },
+ { TIFFTAG_DECODE, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "Decode", NULL },
+ { TIFFTAG_IMAGEBASECOLOR, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ImageBaseColor", NULL },
+ { TIFFTAG_T82OPTIONS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "T82Options", NULL },
+ { TIFFTAG_STRIPROWCOUNTS, -1, -1, TIFF_LONG, 0, TIFF_SETGET_C16_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "StripRowCounts", NULL },
+ { TIFFTAG_IMAGELAYER, 2, 2, TIFF_LONG, 0, TIFF_SETGET_C0_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ImageLayer", NULL },
+ /* end DNG tags */
+ /* begin pseudo tags */
+};
+
+static TIFFField
+exifFields[] = {
+ { EXIFTAG_EXPOSURETIME, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureTime", NULL },
+ { EXIFTAG_FNUMBER, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FNumber", NULL },
+ { EXIFTAG_EXPOSUREPROGRAM, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureProgram", NULL },
+ { EXIFTAG_SPECTRALSENSITIVITY, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SpectralSensitivity", NULL },
+ { EXIFTAG_ISOSPEEDRATINGS, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "ISOSpeedRatings", NULL },
+ { EXIFTAG_OECF, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "OptoelectricConversionFactor", NULL },
+ { EXIFTAG_EXIFVERSION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExifVersion", NULL },
+ { EXIFTAG_DATETIMEORIGINAL, 20, 20, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DateTimeOriginal", NULL },
+ { EXIFTAG_DATETIMEDIGITIZED, 20, 20, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DateTimeDigitized", NULL },
+ { EXIFTAG_COMPONENTSCONFIGURATION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ComponentsConfiguration", NULL },
+ { EXIFTAG_COMPRESSEDBITSPERPIXEL, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CompressedBitsPerPixel", NULL },
+ { EXIFTAG_SHUTTERSPEEDVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ShutterSpeedValue", NULL },
+ { EXIFTAG_APERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ApertureValue", NULL },
+ { EXIFTAG_BRIGHTNESSVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "BrightnessValue", NULL },
+ { EXIFTAG_EXPOSUREBIASVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureBiasValue", NULL },
+ { EXIFTAG_MAXAPERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MaxApertureValue", NULL },
+ { EXIFTAG_SUBJECTDISTANCE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectDistance", NULL },
+ { EXIFTAG_METERINGMODE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MeteringMode", NULL },
+ { EXIFTAG_LIGHTSOURCE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LightSource", NULL },
+ { EXIFTAG_FLASH, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Flash", NULL },
+ { EXIFTAG_FOCALLENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalLength", NULL },
+ { EXIFTAG_SUBJECTAREA, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "SubjectArea", NULL },
+ { EXIFTAG_MAKERNOTE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "MakerNote", NULL },
+ { EXIFTAG_USERCOMMENT, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "UserComment", NULL },
+ { EXIFTAG_SUBSECTIME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTime", NULL },
+ { EXIFTAG_SUBSECTIMEORIGINAL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTimeOriginal", NULL },
+ { EXIFTAG_SUBSECTIMEDIGITIZED, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTimeDigitized", NULL },
+ { EXIFTAG_FLASHPIXVERSION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FlashpixVersion", NULL },
+ { EXIFTAG_COLORSPACE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ColorSpace", NULL },
+ { EXIFTAG_PIXELXDIMENSION, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PixelXDimension", NULL },
+ { EXIFTAG_PIXELYDIMENSION, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PixelYDimension", NULL },
+ { EXIFTAG_RELATEDSOUNDFILE, 13, 13, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "RelatedSoundFile", NULL },
+ { EXIFTAG_FLASHENERGY, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FlashEnergy", NULL },
+ { EXIFTAG_SPATIALFREQUENCYRESPONSE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "SpatialFrequencyResponse", NULL },
+ { EXIFTAG_FOCALPLANEXRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneXResolution", NULL },
+ { EXIFTAG_FOCALPLANEYRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneYResolution", NULL },
+ { EXIFTAG_FOCALPLANERESOLUTIONUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneResolutionUnit", NULL },
+ { EXIFTAG_SUBJECTLOCATION, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectLocation", NULL },
+ { EXIFTAG_EXPOSUREINDEX, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureIndex", NULL },
+ { EXIFTAG_SENSINGMETHOD, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SensingMethod", NULL },
+ { EXIFTAG_FILESOURCE, 1, 1, TIFF_UNDEFINED, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FileSource", NULL },
+ { EXIFTAG_SCENETYPE, 1, 1, TIFF_UNDEFINED, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SceneType", NULL },
+ { EXIFTAG_CFAPATTERN, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "CFAPattern", NULL },
+ { EXIFTAG_CUSTOMRENDERED, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CustomRendered", NULL },
+ { EXIFTAG_EXPOSUREMODE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureMode", NULL },
+ { EXIFTAG_WHITEBALANCE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "WhiteBalance", NULL },
+ { EXIFTAG_DIGITALZOOMRATIO, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DigitalZoomRatio", NULL },
+ { EXIFTAG_FOCALLENGTHIN35MMFILM, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalLengthIn35mmFilm", NULL },
+ { EXIFTAG_SCENECAPTURETYPE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SceneCaptureType", NULL },
+ { EXIFTAG_GAINCONTROL, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "GainControl", NULL },
+ { EXIFTAG_CONTRAST, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Contrast", NULL },
+ { EXIFTAG_SATURATION, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Saturation", NULL },
+ { EXIFTAG_SHARPNESS, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Sharpness", NULL },
+ { EXIFTAG_DEVICESETTINGDESCRIPTION, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "DeviceSettingDescription", NULL },
+ { EXIFTAG_SUBJECTDISTANCERANGE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectDistanceRange", NULL },
+ { EXIFTAG_IMAGEUNIQUEID, 33, 33, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageUniqueID", NULL }
+};
+
+static TIFFFieldArray
+tiffFieldArray = { tfiatImage, 0, TIFFArrayCount(tiffFields), tiffFields };
+static TIFFFieldArray
+exifFieldArray = { tfiatExif, 0, TIFFArrayCount(exifFields), exifFields };
+
+/*
+ * We have our own local lfind() equivelent to avoid subtle differences
+ * in types passed to lfind() on different systems.
+ */
+
+static void *
+td_lfind(const void *key, const void *base, size_t *nmemb, size_t size,
+ int(*compar)(const void *, const void *))
+{
+ char *element, *end;
+
+ end = (char *)base + *nmemb * size;
+ for (element = (char *)base; element < end; element += size)
+ if (!compar(key, element)) /* key found */
+ return element;
+
+ return NULL;
+}
+
+const TIFFFieldArray*
+_TIFFGetFields(void)
+{
+ return(&tiffFieldArray);
+}
+
+const TIFFFieldArray*
+_TIFFGetExifFields(void)
+{
+ return(&exifFieldArray);
+}
+
+void
+_TIFFSetupFields(TIFF* tif, const TIFFFieldArray* fieldarray)
+{
+ if (tif->tif_fields && tif->tif_nfields > 0) {
+ uint32 i;
+
+ for (i = 0; i < tif->tif_nfields; i++) {
+ TIFFField *fld = tif->tif_fields[i];
+ if (fld->field_bit == FIELD_CUSTOM &&
+ strncmp("Tag ", fld->field_name, 4) == 0) {
+ _TIFFfree(fld->field_name);
+ _TIFFfree(fld);
+ }
+ }
+
+ _TIFFfree(tif->tif_fields);
+ tif->tif_fields = NULL;
+ tif->tif_nfields = 0;
+ }
+ if (!_TIFFMergeFields(tif, fieldarray->fields, fieldarray->count)) {
+ TIFFErrorExt(tif->tif_clientdata, "_TIFFSetupFields",
+ "Setting up field info failed");
+ }
+}
+
+static int
+tagCompare(const void* a, const void* b)
+{
+ const TIFFField* ta = *(const TIFFField**) a;
+ const TIFFField* tb = *(const TIFFField**) b;
+ /* NB: be careful of return values for 16-bit platforms */
+ if (ta->field_tag != tb->field_tag)
+ return (int)ta->field_tag - (int)tb->field_tag;
+ else
+ return (ta->field_type == TIFF_ANY) ?
+ 0 : ((int)tb->field_type - (int)ta->field_type);
+}
+
+static int
+tagNameCompare(const void* a, const void* b)
+{
+ const TIFFField* ta = *(const TIFFField**) a;
+ const TIFFField* tb = *(const TIFFField**) b;
+ int ret = strcmp(ta->field_name, tb->field_name);
+
+ if (ret)
+ return ret;
+ else
+ return (ta->field_type == TIFF_ANY) ?
+ 0 : ((int)tb->field_type - (int)ta->field_type);
+}
+
+int
+_TIFFMergeFields(TIFF* tif, const TIFFField info[], uint32 n)
+{
+ static const char module[] = "_TIFFMergeFields";
+ static const char reason[] = "for fields array";
+ /* TIFFField** tp; */
+ uint32 i;
+
+ tif->tif_foundfield = NULL;
+
+ if (tif->tif_fields && tif->tif_nfields > 0) {
+ tif->tif_fields = (TIFFField**)
+ _TIFFCheckRealloc(tif, tif->tif_fields,
+ (tif->tif_nfields + n),
+ sizeof(TIFFField *), reason);
+ } else {
+ tif->tif_fields = (TIFFField **)
+ _TIFFCheckMalloc(tif, n, sizeof(TIFFField *),
+ reason);
+ }
+ if (!tif->tif_fields) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Failed to allocate fields array");
+ return 0;
+ }
+
+ /* tp = tif->tif_fields + tif->tif_nfields; */
+ for (i = 0; i < n; i++) {
+ const TIFFField *fip =
+ TIFFFindField(tif, info[i].field_tag, TIFF_ANY);
+
+ /* only add definitions that aren't already present */
+ if (!fip) {
+ tif->tif_fields[tif->tif_nfields] = (TIFFField *) (info+i);
+ tif->tif_nfields++;
+ }
+ }
+
+ /* Sort the field info by tag number */
+ qsort(tif->tif_fields, tif->tif_nfields,
+ sizeof(TIFFField *), tagCompare);
+
+ return n;
+}
+
+void
+_TIFFPrintFieldInfo(TIFF* tif, FILE* fd)
+{
+ uint32 i;
+
+ fprintf(fd, "%s: \n", tif->tif_name);
+ for (i = 0; i < tif->tif_nfields; i++) {
+ const TIFFField* fip = tif->tif_fields[i];
+ fprintf(fd, "field[%2d] %5lu, %2d, %2d, %d, %2d, %5s, %5s, %s\n"
+ , (int)i
+ , (unsigned long) fip->field_tag
+ , fip->field_readcount, fip->field_writecount
+ , fip->field_type
+ , fip->field_bit
+ , fip->field_oktochange ? "TRUE" : "FALSE"
+ , fip->field_passcount ? "TRUE" : "FALSE"
+ , fip->field_name
+ );
+ }
+}
+
+/*
+ * Return size of TIFFDataType in bytes
+ */
+int
+TIFFDataWidth(TIFFDataType type)
+{
+ switch(type)
+ {
+ case 0: /* nothing */
+ case TIFF_BYTE:
+ case TIFF_ASCII:
+ case TIFF_SBYTE:
+ case TIFF_UNDEFINED:
+ return 1;
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ return 2;
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_FLOAT:
+ case TIFF_IFD:
+ return 4;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_DOUBLE:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ case TIFF_IFD8:
+ return 8;
+ default:
+ return 0; /* will return 0 for unknown types */
+ }
+}
+
+/*
+ * Return size of TIFFDataType in bytes.
+ *
+ * XXX: We need a separate function to determine the space needed
+ * to store the value. For TIFF_RATIONAL values TIFFDataWidth() returns 8,
+ * but we use 4-byte float to represent rationals.
+ */
+int
+_TIFFDataSize(TIFFDataType type)
+{
+ switch (type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_ASCII:
+ case TIFF_UNDEFINED:
+ return 1;
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ return 2;
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_FLOAT:
+ case TIFF_IFD:
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ return 4;
+ case TIFF_DOUBLE:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ case TIFF_IFD8:
+ return 8;
+ default:
+ return 0;
+ }
+}
+
+/* Sync from 3.8.2's modified*/
+#ifdef _WIN32_WCE
+void* wceex_bsearch(const void *key, const void *base, size_t nmemb, size_t size,
+ int (*compar)(const void *, const void *));
+#define bsearch wceex_bsearch
+#endif
+
+const TIFFField*
+TIFFFindField(TIFF* tif, uint32 tag, TIFFDataType dt)
+{
+ TIFFField key = {0, 0, 0, TIFF_NOTYPE, 0, 0, 0, 0, 0, 0, NULL, NULL};
+ TIFFField* pkey = &key;
+ const TIFFField **ret;
+ if (tif->tif_foundfield && tif->tif_foundfield->field_tag == tag &&
+ (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type))
+ return tif->tif_foundfield;
+
+ /* If we are invoked with no field information, then just return. */
+ if (!tif->tif_fields)
+ return NULL;
+
+ /* NB: use sorted search (e.g. binary search) */
+
+ key.field_tag = tag;
+ key.field_type = dt;
+
+ ret = (const TIFFField **) bsearch(&pkey, tif->tif_fields,
+ tif->tif_nfields,
+ sizeof(TIFFField *), tagCompare);
+ return tif->tif_foundfield = (ret ? *ret : NULL);
+}
+
+const TIFFField*
+_TIFFFindFieldByName(TIFF* tif, const char *field_name, TIFFDataType dt)
+{
+ TIFFField key = {0, 0, 0, TIFF_NOTYPE, 0, 0, 0, 0, 0, 0, NULL, NULL};
+ TIFFField* pkey = &key;
+ const TIFFField **ret;
+ if (tif->tif_foundfield
+ && streq(tif->tif_foundfield->field_name, field_name)
+ && (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type))
+ return (tif->tif_foundfield);
+
+ /* If we are invoked with no field information, then just return. */
+ if (!tif->tif_fields)
+ return NULL;
+
+ /* NB: use linear search since list is sorted by key#, not name */
+
+ key.field_name = (char *)field_name;
+ key.field_type = dt;
+
+#if 1
+ ret = (const TIFFField **)
+ td_lfind(&pkey, tif->tif_fields, &tif->tif_nfields,
+ sizeof(TIFFField *), tagNameCompare);
+#else
+ // from old svn version
+ /*ret = (const TIFFFieldInfo **) lfind(&pkey,
+ tif->tif_fieldinfo,
+ &tif->tif_nfields,
+ sizeof(TIFFFieldInfo *),
+ tagNameCompare);
+ */
+ /*modify by Sunliang.Liu 20090827 for some platform not support lfind*/
+ ret = NULL;
+#endif
+ return tif->tif_foundfield = (ret ? *ret : NULL);
+}
+
+const TIFFField*
+TIFFFieldWithTag(TIFF* tif, uint32 tag)
+{
+ const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
+ if (!fip) {
+ TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithTag",
+ "Internal error, unknown tag 0x%x",
+ (unsigned int) tag);
+ }
+ return (fip);
+}
+
+const TIFFField*
+TIFFFieldWithName(TIFF* tif, const char *field_name)
+{
+ const TIFFField* fip =
+ _TIFFFindFieldByName(tif, field_name, TIFF_ANY);
+ if (!fip) {
+ TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithName",
+ "Internal error, unknown tag %s", field_name);
+ }
+ return (fip);
+}
+
+uint32
+TIFFFieldTag(const TIFFField* fip)
+{
+ return fip->field_tag;
+}
+
+const char *
+TIFFFieldName(const TIFFField* fip)
+{
+ return fip->field_name;
+}
+
+TIFFDataType
+TIFFFieldDataType(const TIFFField* fip)
+{
+ return fip->field_type;
+}
+
+int
+TIFFFieldPassCount(const TIFFField* fip)
+{
+ return fip->field_passcount;
+}
+
+int
+TIFFFieldReadCount(const TIFFField* fip)
+{
+ return fip->field_readcount;
+}
+
+int
+TIFFFieldWriteCount(const TIFFField* fip)
+{
+ return fip->field_writecount;
+}
+
+const TIFFField*
+_TIFFFindOrRegisterField(TIFF *tif, uint32 tag, TIFFDataType dt)
+
+{
+ const TIFFField *fld;
+
+ fld = TIFFFindField(tif, tag, dt);
+ if (fld == NULL) {
+ fld = _TIFFCreateAnonField(tif, tag, dt);
+ if (!_TIFFMergeFields(tif, fld, 1))
+ return NULL;
+ }
+
+ return fld;
+}
+
+TIFFField*
+_TIFFCreateAnonField(TIFF *tif, uint32 tag, TIFFDataType field_type)
+{
+ TIFFField *fld;
+ (void) tif;
+
+ fld = (TIFFField *) _TIFFmalloc(sizeof (TIFFField));
+ if (fld == NULL)
+ return NULL;
+ _TIFFmemset(fld, 0, sizeof(TIFFField));
+
+ fld->field_tag = tag;
+ fld->field_readcount = TIFF_VARIABLE2;
+ fld->field_writecount = TIFF_VARIABLE2;
+ fld->field_type = field_type;
+ fld->reserved = 0;
+ switch (field_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ fld->set_field_type = TIFF_SETGET_C32_UINT8;
+ fld->get_field_type = TIFF_SETGET_C32_UINT8;
+ break;
+ case TIFF_ASCII:
+ fld->set_field_type = TIFF_SETGET_C32_ASCII;
+ fld->get_field_type = TIFF_SETGET_C32_ASCII;
+ break;
+ case TIFF_SHORT:
+ fld->set_field_type = TIFF_SETGET_C32_UINT16;
+ fld->get_field_type = TIFF_SETGET_C32_UINT16;
+ break;
+ case TIFF_LONG:
+ fld->set_field_type = TIFF_SETGET_C32_UINT32;
+ fld->get_field_type = TIFF_SETGET_C32_UINT32;
+ break;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ fld->set_field_type = TIFF_SETGET_C32_FLOAT;
+ fld->get_field_type = TIFF_SETGET_C32_FLOAT;
+ break;
+ case TIFF_SBYTE:
+ fld->set_field_type = TIFF_SETGET_C32_SINT8;
+ fld->get_field_type = TIFF_SETGET_C32_SINT8;
+ break;
+ case TIFF_SSHORT:
+ fld->set_field_type = TIFF_SETGET_C32_SINT16;
+ fld->get_field_type = TIFF_SETGET_C32_SINT16;
+ break;
+ case TIFF_SLONG:
+ fld->set_field_type = TIFF_SETGET_C32_SINT32;
+ fld->get_field_type = TIFF_SETGET_C32_SINT32;
+ break;
+ case TIFF_DOUBLE:
+ fld->set_field_type = TIFF_SETGET_C32_DOUBLE;
+ fld->get_field_type = TIFF_SETGET_C32_DOUBLE;
+ break;
+ case TIFF_IFD:
+ case TIFF_IFD8:
+ fld->set_field_type = TIFF_SETGET_C32_IFD8;
+ fld->get_field_type = TIFF_SETGET_C32_IFD8;
+ break;
+ case TIFF_LONG8:
+ fld->set_field_type = TIFF_SETGET_C32_UINT64;
+ fld->get_field_type = TIFF_SETGET_C32_UINT64;
+ break;
+ case TIFF_SLONG8:
+ fld->set_field_type = TIFF_SETGET_C32_SINT64;
+ fld->get_field_type = TIFF_SETGET_C32_SINT64;
+ break;
+ default:
+ fld->set_field_type = TIFF_SETGET_UNDEFINED;
+ fld->get_field_type = TIFF_SETGET_UNDEFINED;
+ break;
+ }
+ fld->field_bit = FIELD_CUSTOM;
+ fld->field_oktochange = TRUE;
+ fld->field_passcount = TRUE;
+ fld->field_name = (char *) _TIFFmalloc(32);
+ if (fld->field_name == NULL) {
+ _TIFFfree(fld);
+ return NULL;
+ }
+ fld->field_subfields = NULL;
+
+ /*
+ * note that this name is a special sign to TIFFClose() and
+ * _TIFFSetupFields() to free the field
+ */
+ sprintf(fld->field_name, "Tag %d", (int) tag);
+
+ return fld;
+}
+
+/****************************************************************************
+ * O B S O L E T E D I N T E R F A C E S
+ *
+ * Don't use this stuff in your applications, it may be removed in the future
+ * libtiff versions.
+ ****************************************************************************/
+
+static TIFFSetGetFieldType
+_TIFFSetGetType(TIFFDataType type, short count, unsigned char passcount)
+{
+ if (type == TIFF_ASCII && count == TIFF_VARIABLE && passcount == 0)
+ return TIFF_SETGET_ASCII;
+
+ else if (count == 1 && passcount == 0) {
+ switch (type)
+ {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ return TIFF_SETGET_UINT8;
+ case TIFF_ASCII:
+ return TIFF_SETGET_ASCII;
+ case TIFF_SHORT:
+ return TIFF_SETGET_UINT16;
+ case TIFF_LONG:
+ return TIFF_SETGET_UINT32;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ return TIFF_SETGET_FLOAT;
+ case TIFF_SBYTE:
+ return TIFF_SETGET_SINT8;
+ case TIFF_SSHORT:
+ return TIFF_SETGET_SINT16;
+ case TIFF_SLONG:
+ return TIFF_SETGET_SINT32;
+ case TIFF_DOUBLE:
+ return TIFF_SETGET_DOUBLE;
+ case TIFF_IFD:
+ case TIFF_IFD8:
+ return TIFF_SETGET_IFD8;
+ case TIFF_LONG8:
+ return TIFF_SETGET_UINT64;
+ case TIFF_SLONG8:
+ return TIFF_SETGET_SINT64;
+ default:
+ return TIFF_SETGET_UNDEFINED;
+ }
+ }
+
+ else if (count >= 1 && passcount == 0) {
+ switch (type)
+ {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ return TIFF_SETGET_C0_UINT8;
+ case TIFF_ASCII:
+ return TIFF_SETGET_C0_ASCII;
+ case TIFF_SHORT:
+ return TIFF_SETGET_C0_UINT16;
+ case TIFF_LONG:
+ return TIFF_SETGET_C0_UINT32;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ return TIFF_SETGET_C0_FLOAT;
+ case TIFF_SBYTE:
+ return TIFF_SETGET_C0_SINT8;
+ case TIFF_SSHORT:
+ return TIFF_SETGET_C0_SINT16;
+ case TIFF_SLONG:
+ return TIFF_SETGET_C0_SINT32;
+ case TIFF_DOUBLE:
+ return TIFF_SETGET_C0_DOUBLE;
+ case TIFF_IFD:
+ case TIFF_IFD8:
+ return TIFF_SETGET_C0_IFD8;
+ case TIFF_LONG8:
+ return TIFF_SETGET_C0_UINT64;
+ case TIFF_SLONG8:
+ return TIFF_SETGET_C0_SINT64;
+ default:
+ return TIFF_SETGET_UNDEFINED;
+ }
+ }
+
+ else if (count == TIFF_VARIABLE && passcount == 1) {
+ switch (type)
+ {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ return TIFF_SETGET_C16_UINT8;
+ case TIFF_ASCII:
+ return TIFF_SETGET_C16_ASCII;
+ case TIFF_SHORT:
+ return TIFF_SETGET_C16_UINT16;
+ case TIFF_LONG:
+ return TIFF_SETGET_C16_UINT32;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ return TIFF_SETGET_C16_FLOAT;
+ case TIFF_SBYTE:
+ return TIFF_SETGET_C16_SINT8;
+ case TIFF_SSHORT:
+ return TIFF_SETGET_C16_SINT16;
+ case TIFF_SLONG:
+ return TIFF_SETGET_C16_SINT32;
+ case TIFF_DOUBLE:
+ return TIFF_SETGET_C16_DOUBLE;
+ case TIFF_IFD:
+ case TIFF_IFD8:
+ return TIFF_SETGET_C16_IFD8;
+ case TIFF_LONG8:
+ return TIFF_SETGET_C16_UINT64;
+ case TIFF_SLONG8:
+ return TIFF_SETGET_C16_SINT64;
+ default:
+ return TIFF_SETGET_UNDEFINED;
+ }
+ }
+
+ else if (count == TIFF_VARIABLE2 && passcount == 1) {
+ switch (type)
+ {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ return TIFF_SETGET_C32_UINT8;
+ case TIFF_ASCII:
+ return TIFF_SETGET_C32_ASCII;
+ case TIFF_SHORT:
+ return TIFF_SETGET_C32_UINT16;
+ case TIFF_LONG:
+ return TIFF_SETGET_C32_UINT32;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ return TIFF_SETGET_C32_FLOAT;
+ case TIFF_SBYTE:
+ return TIFF_SETGET_C32_SINT8;
+ case TIFF_SSHORT:
+ return TIFF_SETGET_C32_SINT16;
+ case TIFF_SLONG:
+ return TIFF_SETGET_C32_SINT32;
+ case TIFF_DOUBLE:
+ return TIFF_SETGET_C32_DOUBLE;
+ case TIFF_IFD:
+ case TIFF_IFD8:
+ return TIFF_SETGET_C32_IFD8;
+ case TIFF_LONG8:
+ return TIFF_SETGET_C32_UINT64;
+ case TIFF_SLONG8:
+ return TIFF_SETGET_C32_SINT64;
+ default:
+ return TIFF_SETGET_UNDEFINED;
+ }
+ }
+
+ return TIFF_SETGET_UNDEFINED;
+}
+
+int
+TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], uint32 n)
+{
+ static const char module[] = "TIFFMergeFieldInfo";
+ static const char reason[] = "for fields array";
+ TIFFField *tp;
+ size_t nfields;
+ uint32 i;
+
+ if (tif->tif_nfieldscompat > 0) {
+ tif->tif_fieldscompat = (TIFFFieldArray *)
+ _TIFFCheckRealloc(tif, tif->tif_fieldscompat,
+ tif->tif_nfieldscompat + 1,
+ sizeof(TIFFFieldArray), reason);
+ } else {
+ tif->tif_fieldscompat = (TIFFFieldArray *)
+ _TIFFCheckMalloc(tif, 1, sizeof(TIFFFieldArray),
+ reason);
+ }
+ if (!tif->tif_fieldscompat) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Failed to allocate fields array");
+ return -1;
+ }
+ nfields = tif->tif_nfieldscompat++;
+
+ tif->tif_fieldscompat[nfields].type = tfiatOther;
+ tif->tif_fieldscompat[nfields].allocated_size = n;
+ tif->tif_fieldscompat[nfields].count = n;
+ tif->tif_fieldscompat[nfields].fields =
+ (TIFFField *)_TIFFCheckMalloc(tif, n, sizeof(TIFFField),
+ reason);
+ if (!tif->tif_fieldscompat[nfields].fields) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Failed to allocate fields array");
+ return -1;
+ }
+
+ tp = tif->tif_fieldscompat[nfields].fields;
+ for (i = 0; i < n; i++) {
+ tp->field_tag = info[i].field_tag;
+ tp->field_readcount = info[i].field_readcount;
+ tp->field_writecount = info[i].field_writecount;
+ tp->field_type = info[i].field_type;
+ tp->reserved = 0;
+ tp->set_field_type =
+ _TIFFSetGetType(info[i].field_type,
+ info[i].field_readcount,
+ info[i].field_passcount);
+ tp->get_field_type =
+ _TIFFSetGetType(info[i].field_type,
+ info[i].field_readcount,
+ info[i].field_passcount);
+ tp->field_bit = info[i].field_bit;
+ tp->field_oktochange = info[i].field_oktochange;
+ tp->field_passcount = info[i].field_passcount;
+ tp->field_name = info[i].field_name;
+ tp->field_subfields = NULL;
+ tp++;
+ }
+
+ if (!_TIFFMergeFields(tif, tif->tif_fieldscompat[nfields].fields, n)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Setting up field info failed");
+ return -1;
+ }
+
+ return 0;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirread.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirread.c
new file mode 100644
index 0000000..bd28d69
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirread.c
@@ -0,0 +1,5616 @@
+/* $Id: tif_dirread.c,v 1.178 2012-08-19 16:56:34 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Directory Read Support Routines.
+ */
+
+/* Suggested pending improvements:
+ * - add a field 'ignore' to the TIFFDirEntry structure, to flag status,
+ * eliminating current use of the IGNORE value, and therefore eliminating
+ * current irrational behaviour on tags with tag id code 0
+ * - add a field 'field_info' to the TIFFDirEntry structure, and set that with
+ * the pointer to the appropriate TIFFField structure early on in
+ * TIFFReadDirectory, so as to eliminate current possibly repetitive lookup.
+ */
+
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+#define IGNORE 0 /* tag placeholder used below */
+#define FAILED_FII ((uint32) -1)
+
+#ifdef HAVE_IEEEFP
+# define TIFFCvtIEEEFloatToNative(tif, n, fp)
+# define TIFFCvtIEEEDoubleToNative(tif, n, dp)
+#else
+extern void TIFFCvtIEEEFloatToNative(TIFF*, uint32, float*);
+extern void TIFFCvtIEEEDoubleToNative(TIFF*, uint32, double*);
+#endif
+
+enum TIFFReadDirEntryErr {
+ TIFFReadDirEntryErrOk = 0,
+ TIFFReadDirEntryErrCount = 1,
+ TIFFReadDirEntryErrType = 2,
+ TIFFReadDirEntryErrIo = 3,
+ TIFFReadDirEntryErrRange = 4,
+ TIFFReadDirEntryErrPsdif = 5,
+ TIFFReadDirEntryErrSizesan = 6,
+ TIFFReadDirEntryErrAlloc = 7,
+};
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryByte(TIFF* tif, TIFFDirEntry* direntry, uint8* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryLong(TIFF* tif, TIFFDirEntry* direntry, uint32* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8(TIFF* tif, TIFFDirEntry* direntry, uint64* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryFloat(TIFF* tif, TIFFDirEntry* direntry, float* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryDouble(TIFF* tif, TIFFDirEntry* direntry, double* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryIfd8(TIFF* tif, TIFFDirEntry* direntry, uint64* value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryArray(TIFF* tif, TIFFDirEntry* direntry, uint32* count, uint32 desttypesize, void** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryByteArray(TIFF* tif, TIFFDirEntry* direntry, uint8** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntrySbyteArray(TIFF* tif, TIFFDirEntry* direntry, int8** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryShortArray(TIFF* tif, TIFFDirEntry* direntry, uint16** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntrySshortArray(TIFF* tif, TIFFDirEntry* direntry, int16** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryLongArray(TIFF* tif, TIFFDirEntry* direntry, uint32** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntrySlongArray(TIFF* tif, TIFFDirEntry* direntry, int32** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8Array(TIFF* tif, TIFFDirEntry* direntry, uint64** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong8Array(TIFF* tif, TIFFDirEntry* direntry, int64** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryFloatArray(TIFF* tif, TIFFDirEntry* direntry, float** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryDoubleArray(TIFF* tif, TIFFDirEntry* direntry, double** value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryIfd8Array(TIFF* tif, TIFFDirEntry* direntry, uint64** value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryPersampleShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value);
+#if 0
+static enum TIFFReadDirEntryErr TIFFReadDirEntryPersampleDouble(TIFF* tif, TIFFDirEntry* direntry, double* value);
+#endif
+
+static void TIFFReadDirEntryCheckedByte(TIFF* tif, TIFFDirEntry* direntry, uint8* value);
+static void TIFFReadDirEntryCheckedSbyte(TIFF* tif, TIFFDirEntry* direntry, int8* value);
+static void TIFFReadDirEntryCheckedShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value);
+static void TIFFReadDirEntryCheckedSshort(TIFF* tif, TIFFDirEntry* direntry, int16* value);
+static void TIFFReadDirEntryCheckedLong(TIFF* tif, TIFFDirEntry* direntry, uint32* value);
+static void TIFFReadDirEntryCheckedSlong(TIFF* tif, TIFFDirEntry* direntry, int32* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedLong8(TIFF* tif, TIFFDirEntry* direntry, uint64* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSlong8(TIFF* tif, TIFFDirEntry* direntry, int64* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedRational(TIFF* tif, TIFFDirEntry* direntry, double* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSrational(TIFF* tif, TIFFDirEntry* direntry, double* value);
+static void TIFFReadDirEntryCheckedFloat(TIFF* tif, TIFFDirEntry* direntry, float* value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedDouble(TIFF* tif, TIFFDirEntry* direntry, double* value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSbyte(int8 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteShort(uint16 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSshort(int16 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong(uint32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong(int32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong8(uint64 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong8(int64 value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteByte(uint8 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteShort(uint16 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSshort(int16 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong(uint32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong(int32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong8(uint64 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong8(int64 value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSbyte(int8 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSshort(int16 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong(uint32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong(int32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong8(uint64 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong8(int64 value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortShort(uint16 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong(uint32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong(int32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong8(uint64 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong8(int64 value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSbyte(int8 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSshort(int16 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong(int32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongLong8(uint64 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong8(int64 value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongLong(uint32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongLong8(uint64 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongSlong8(int64 value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Sbyte(int8 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Sshort(int16 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Slong(int32 value);
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Slong8(int64 value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlong8Long8(uint64 value);
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryData(TIFF* tif, uint64 offset, tmsize_t size, void* dest);
+static void TIFFReadDirEntryOutputErr(TIFF* tif, enum TIFFReadDirEntryErr err, const char* module, const char* tagname, int recover);
+
+static void TIFFReadDirectoryCheckOrder(TIFF* tif, TIFFDirEntry* dir, uint16 dircount);
+static TIFFDirEntry* TIFFReadDirectoryFindEntry(TIFF* tif, TIFFDirEntry* dir, uint16 dircount, uint16 tagid);
+static void TIFFReadDirectoryFindFieldInfo(TIFF* tif, uint16 tagid, uint32* fii);
+
+static int EstimateStripByteCounts(TIFF* tif, TIFFDirEntry* dir, uint16 dircount);
+static void MissingRequired(TIFF*, const char*);
+static int TIFFCheckDirOffset(TIFF* tif, uint64 diroff);
+static int CheckDirCount(TIFF*, TIFFDirEntry*, uint32);
+static uint16 TIFFFetchDirectory(TIFF* tif, uint64 diroff, TIFFDirEntry** pdir, uint64* nextdiroff);
+static int TIFFFetchNormalTag(TIFF*, TIFFDirEntry*, int recover);
+static int TIFFFetchStripThing(TIFF* tif, TIFFDirEntry* dir, uint32 nstrips, uint64** lpp);
+static int TIFFFetchSubjectDistance(TIFF*, TIFFDirEntry*);
+static void ChopUpSingleUncompressedStrip(TIFF*);
+static uint64 TIFFReadUInt64(const uint8 *value);
+
+typedef union _UInt64Aligned_t
+{
+ double d;
+ uint64 l;
+ uint32 i[2];
+ uint16 s[4];
+ uint8 c[8];
+} UInt64Aligned_t;
+
+/*
+ Unaligned safe copy of a uint64 value from an octet array.
+*/
+static uint64 TIFFReadUInt64(const uint8 *value)
+{
+ UInt64Aligned_t result;
+
+ result.c[0]=value[0];
+ result.c[1]=value[1];
+ result.c[2]=value[2];
+ result.c[3]=value[3];
+ result.c[4]=value[4];
+ result.c[5]=value[5];
+ result.c[6]=value[6];
+ result.c[7]=value[7];
+
+ return result.l;
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryByte(TIFF* tif, TIFFDirEntry* direntry, uint8* value)
+{
+ enum TIFFReadDirEntryErr err;
+ if (direntry->tdir_count!=1)
+ return(TIFFReadDirEntryErrCount);
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ TIFFReadDirEntryCheckedByte(tif,direntry,value);
+ return(TIFFReadDirEntryErrOk);
+ case TIFF_SBYTE:
+ {
+ int8 m;
+ TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeByteSbyte(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint8)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SHORT:
+ {
+ uint16 m;
+ TIFFReadDirEntryCheckedShort(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeByteShort(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint8)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SSHORT:
+ {
+ int16 m;
+ TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeByteSshort(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint8)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG:
+ {
+ uint32 m;
+ TIFFReadDirEntryCheckedLong(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeByteLong(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint8)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG:
+ {
+ int32 m;
+ TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeByteSlong(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint8)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG8:
+ {
+ uint64 m;
+ err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ err=TIFFReadDirEntryCheckRangeByteLong8(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint8)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG8:
+ {
+ int64 m;
+ err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ err=TIFFReadDirEntryCheckRangeByteSlong8(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint8)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value)
+{
+ enum TIFFReadDirEntryErr err;
+ if (direntry->tdir_count!=1)
+ return(TIFFReadDirEntryErrCount);
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8 m;
+ TIFFReadDirEntryCheckedByte(tif,direntry,&m);
+ *value=(uint16)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SBYTE:
+ {
+ int8 m;
+ TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeShortSbyte(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint16)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SHORT:
+ TIFFReadDirEntryCheckedShort(tif,direntry,value);
+ return(TIFFReadDirEntryErrOk);
+ case TIFF_SSHORT:
+ {
+ int16 m;
+ TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeShortSshort(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint16)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG:
+ {
+ uint32 m;
+ TIFFReadDirEntryCheckedLong(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeShortLong(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint16)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG:
+ {
+ int32 m;
+ TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeShortSlong(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint16)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG8:
+ {
+ uint64 m;
+ err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ err=TIFFReadDirEntryCheckRangeShortLong8(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint16)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG8:
+ {
+ int64 m;
+ err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ err=TIFFReadDirEntryCheckRangeShortSlong8(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint16)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryLong(TIFF* tif, TIFFDirEntry* direntry, uint32* value)
+{
+ enum TIFFReadDirEntryErr err;
+ if (direntry->tdir_count!=1)
+ return(TIFFReadDirEntryErrCount);
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8 m;
+ TIFFReadDirEntryCheckedByte(tif,direntry,&m);
+ *value=(uint32)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SBYTE:
+ {
+ int8 m;
+ TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeLongSbyte(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint32)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SHORT:
+ {
+ uint16 m;
+ TIFFReadDirEntryCheckedShort(tif,direntry,&m);
+ *value=(uint32)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SSHORT:
+ {
+ int16 m;
+ TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeLongSshort(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint32)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG:
+ TIFFReadDirEntryCheckedLong(tif,direntry,value);
+ return(TIFFReadDirEntryErrOk);
+ case TIFF_SLONG:
+ {
+ int32 m;
+ TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeLongSlong(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint32)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG8:
+ {
+ uint64 m;
+ err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ err=TIFFReadDirEntryCheckRangeLongLong8(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint32)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG8:
+ {
+ int64 m;
+ err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ err=TIFFReadDirEntryCheckRangeLongSlong8(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint32)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8(TIFF* tif, TIFFDirEntry* direntry, uint64* value)
+{
+ enum TIFFReadDirEntryErr err;
+ if (direntry->tdir_count!=1)
+ return(TIFFReadDirEntryErrCount);
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8 m;
+ TIFFReadDirEntryCheckedByte(tif,direntry,&m);
+ *value=(uint64)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SBYTE:
+ {
+ int8 m;
+ TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeLong8Sbyte(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint64)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SHORT:
+ {
+ uint16 m;
+ TIFFReadDirEntryCheckedShort(tif,direntry,&m);
+ *value=(uint64)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SSHORT:
+ {
+ int16 m;
+ TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeLong8Sshort(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint64)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG:
+ {
+ uint32 m;
+ TIFFReadDirEntryCheckedLong(tif,direntry,&m);
+ *value=(uint64)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG:
+ {
+ int32 m;
+ TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
+ err=TIFFReadDirEntryCheckRangeLong8Slong(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint64)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG8:
+ err=TIFFReadDirEntryCheckedLong8(tif,direntry,value);
+ return(err);
+ case TIFF_SLONG8:
+ {
+ int64 m;
+ err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ err=TIFFReadDirEntryCheckRangeLong8Slong8(m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(uint64)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryFloat(TIFF* tif, TIFFDirEntry* direntry, float* value)
+{
+ enum TIFFReadDirEntryErr err;
+ if (direntry->tdir_count!=1)
+ return(TIFFReadDirEntryErrCount);
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8 m;
+ TIFFReadDirEntryCheckedByte(tif,direntry,&m);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SBYTE:
+ {
+ int8 m;
+ TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SHORT:
+ {
+ uint16 m;
+ TIFFReadDirEntryCheckedShort(tif,direntry,&m);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SSHORT:
+ {
+ int16 m;
+ TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG:
+ {
+ uint32 m;
+ TIFFReadDirEntryCheckedLong(tif,direntry,&m);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG:
+ {
+ int32 m;
+ TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG8:
+ {
+ uint64 m;
+ err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+#if defined(__WIN32__) && (_MSC_VER < 1500)
+ /*
+ * XXX: MSVC 6.0 does not support conversion
+ * of 64-bit integers into floating point
+ * values.
+ */
+ *value = _TIFFUInt64ToFloat(m);
+#else
+ *value=(float)m;
+#endif
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG8:
+ {
+ int64 m;
+ err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_RATIONAL:
+ {
+ double m;
+ err=TIFFReadDirEntryCheckedRational(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SRATIONAL:
+ {
+ double m;
+ err=TIFFReadDirEntryCheckedSrational(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_FLOAT:
+ TIFFReadDirEntryCheckedFloat(tif,direntry,value);
+ return(TIFFReadDirEntryErrOk);
+ case TIFF_DOUBLE:
+ {
+ double m;
+ err=TIFFReadDirEntryCheckedDouble(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(float)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryDouble(TIFF* tif, TIFFDirEntry* direntry, double* value)
+{
+ enum TIFFReadDirEntryErr err;
+ if (direntry->tdir_count!=1)
+ return(TIFFReadDirEntryErrCount);
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8 m;
+ TIFFReadDirEntryCheckedByte(tif,direntry,&m);
+ *value=(double)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SBYTE:
+ {
+ int8 m;
+ TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
+ *value=(double)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SHORT:
+ {
+ uint16 m;
+ TIFFReadDirEntryCheckedShort(tif,direntry,&m);
+ *value=(double)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SSHORT:
+ {
+ int16 m;
+ TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
+ *value=(double)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG:
+ {
+ uint32 m;
+ TIFFReadDirEntryCheckedLong(tif,direntry,&m);
+ *value=(double)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG:
+ {
+ int32 m;
+ TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
+ *value=(double)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG8:
+ {
+ uint64 m;
+ err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+#if defined(__WIN32__) && (_MSC_VER < 1500)
+ /*
+ * XXX: MSVC 6.0 does not support conversion
+ * of 64-bit integers into floating point
+ * values.
+ */
+ *value = _TIFFUInt64ToDouble(m);
+#else
+ *value = (double)m;
+#endif
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG8:
+ {
+ int64 m;
+ err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ *value=(double)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_RATIONAL:
+ err=TIFFReadDirEntryCheckedRational(tif,direntry,value);
+ return(err);
+ case TIFF_SRATIONAL:
+ err=TIFFReadDirEntryCheckedSrational(tif,direntry,value);
+ return(err);
+ case TIFF_FLOAT:
+ {
+ float m;
+ TIFFReadDirEntryCheckedFloat(tif,direntry,&m);
+ *value=(double)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_DOUBLE:
+ err=TIFFReadDirEntryCheckedDouble(tif,direntry,value);
+ return(err);
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryIfd8(TIFF* tif, TIFFDirEntry* direntry, uint64* value)
+{
+ enum TIFFReadDirEntryErr err;
+ if (direntry->tdir_count!=1)
+ return(TIFFReadDirEntryErrCount);
+ switch (direntry->tdir_type)
+ {
+ case TIFF_LONG:
+ case TIFF_IFD:
+ {
+ uint32 m;
+ TIFFReadDirEntryCheckedLong(tif,direntry,&m);
+ *value=(uint64)m;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_LONG8:
+ case TIFF_IFD8:
+ err=TIFFReadDirEntryCheckedLong8(tif,direntry,value);
+ return(err);
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryArray(TIFF* tif, TIFFDirEntry* direntry, uint32* count, uint32 desttypesize, void** value)
+{
+ int typesize;
+ uint32 datasize;
+ void* data;
+ typesize=TIFFDataWidth(direntry->tdir_type);
+ if ((direntry->tdir_count==0)||(typesize==0))
+ {
+ *value=0;
+ return(TIFFReadDirEntryErrOk);
+ }
+ (void) desttypesize;
+
+ /*
+ * As a sanity check, make sure we have no more than a 2GB tag array
+ * in either the current data type or the dest data type. This also
+ * avoids problems with overflow of tmsize_t on 32bit systems.
+ */
+ if ((uint64)(2147483647/typesize)<direntry->tdir_count)
+ return(TIFFReadDirEntryErrSizesan);
+ if ((uint64)(2147483647/desttypesize)<direntry->tdir_count)
+ return(TIFFReadDirEntryErrSizesan);
+
+ *count=(uint32)direntry->tdir_count;
+ datasize=(*count)*typesize;
+ assert((tmsize_t)datasize>0);
+ data=_TIFFCheckMalloc(tif, *count, typesize, "ReadDirEntryArray");
+ if (data==0)
+ return(TIFFReadDirEntryErrAlloc);
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ if (datasize<=4)
+ _TIFFmemcpy(data,&direntry->tdir_offset,datasize);
+ else
+ {
+ enum TIFFReadDirEntryErr err;
+ uint32 offset = direntry->tdir_offset.toff_long;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&offset);
+ err=TIFFReadDirEntryData(tif,(uint64)offset,(tmsize_t)datasize,data);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ }
+ }
+ else
+ {
+ if (datasize<=8)
+ _TIFFmemcpy(data,&direntry->tdir_offset,datasize);
+ else
+ {
+ enum TIFFReadDirEntryErr err;
+ uint64 offset = direntry->tdir_offset.toff_long8;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(&offset);
+ err=TIFFReadDirEntryData(tif,offset,(tmsize_t)datasize,data);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ }
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryByteArray(TIFF* tif, TIFFDirEntry* direntry, uint8** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ uint8* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_ASCII:
+ case TIFF_UNDEFINED:
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,1,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_ASCII:
+ case TIFF_UNDEFINED:
+ case TIFF_BYTE:
+ *value=(uint8*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ case TIFF_SBYTE:
+ {
+ int8* m;
+ uint32 n;
+ m=(int8*)origdata;
+ for (n=0; n<count; n++)
+ {
+ err=TIFFReadDirEntryCheckRangeByteSbyte(*m);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(origdata);
+ return(err);
+ }
+ m++;
+ }
+ *value=(uint8*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ }
+ data=(uint8*)_TIFFmalloc(count);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_SHORT:
+ {
+ uint16* ma;
+ uint8* mb;
+ uint32 n;
+ ma=(uint16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(ma);
+ err=TIFFReadDirEntryCheckRangeByteShort(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* ma;
+ uint8* mb;
+ uint32 n;
+ ma=(int16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ err=TIFFReadDirEntryCheckRangeByteSshort(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* ma;
+ uint8* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ err=TIFFReadDirEntryCheckRangeByteLong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* ma;
+ uint8* mb;
+ uint32 n;
+ ma=(int32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ err=TIFFReadDirEntryCheckRangeByteSlong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG8:
+ {
+ uint64* ma;
+ uint8* mb;
+ uint32 n;
+ ma=(uint64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(ma);
+ err=TIFFReadDirEntryCheckRangeByteLong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64* ma;
+ uint8* mb;
+ uint32 n;
+ ma=(int64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ err=TIFFReadDirEntryCheckRangeByteSlong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint8)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntrySbyteArray(TIFF* tif, TIFFDirEntry* direntry, int8** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ int8* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_UNDEFINED:
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,1,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_UNDEFINED:
+ case TIFF_BYTE:
+ {
+ uint8* m;
+ uint32 n;
+ m=(uint8*)origdata;
+ for (n=0; n<count; n++)
+ {
+ err=TIFFReadDirEntryCheckRangeSbyteByte(*m);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(origdata);
+ return(err);
+ }
+ m++;
+ }
+ *value=(int8*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SBYTE:
+ *value=(int8*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ data=(int8*)_TIFFmalloc(count);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_SHORT:
+ {
+ uint16* ma;
+ int8* mb;
+ uint32 n;
+ ma=(uint16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(ma);
+ err=TIFFReadDirEntryCheckRangeSbyteShort(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* ma;
+ int8* mb;
+ uint32 n;
+ ma=(int16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ err=TIFFReadDirEntryCheckRangeSbyteSshort(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* ma;
+ int8* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ err=TIFFReadDirEntryCheckRangeSbyteLong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* ma;
+ int8* mb;
+ uint32 n;
+ ma=(int32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ err=TIFFReadDirEntryCheckRangeSbyteSlong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG8:
+ {
+ uint64* ma;
+ int8* mb;
+ uint32 n;
+ ma=(uint64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(ma);
+ err=TIFFReadDirEntryCheckRangeSbyteLong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int8)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64* ma;
+ int8* mb;
+ uint32 n;
+ ma=(int64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ err=TIFFReadDirEntryCheckRangeSbyteSlong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int8)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryShortArray(TIFF* tif, TIFFDirEntry* direntry, uint16** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ uint16* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,2,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_SHORT:
+ *value=(uint16*)origdata;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfShort(*value,count);
+ return(TIFFReadDirEntryErrOk);
+ case TIFF_SSHORT:
+ {
+ int16* m;
+ uint32 n;
+ m=(int16*)origdata;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)m);
+ err=TIFFReadDirEntryCheckRangeShortSshort(*m);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(origdata);
+ return(err);
+ }
+ m++;
+ }
+ *value=(uint16*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ }
+ data=(uint16*)_TIFFmalloc(count*2);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8* ma;
+ uint16* mb;
+ uint32 n;
+ ma=(uint8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(uint16)(*ma++);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* ma;
+ uint16* mb;
+ uint32 n;
+ ma=(int8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ err=TIFFReadDirEntryCheckRangeShortSbyte(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint16)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* ma;
+ uint16* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ err=TIFFReadDirEntryCheckRangeShortLong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint16)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* ma;
+ uint16* mb;
+ uint32 n;
+ ma=(int32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ err=TIFFReadDirEntryCheckRangeShortSlong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint16)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG8:
+ {
+ uint64* ma;
+ uint16* mb;
+ uint32 n;
+ ma=(uint64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(ma);
+ err=TIFFReadDirEntryCheckRangeShortLong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint16)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64* ma;
+ uint16* mb;
+ uint32 n;
+ ma=(int64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ err=TIFFReadDirEntryCheckRangeShortSlong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint16)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntrySshortArray(TIFF* tif, TIFFDirEntry* direntry, int16** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ int16* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,2,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_SHORT:
+ {
+ uint16* m;
+ uint32 n;
+ m=(uint16*)origdata;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(m);
+ err=TIFFReadDirEntryCheckRangeSshortShort(*m);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(origdata);
+ return(err);
+ }
+ m++;
+ }
+ *value=(int16*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SSHORT:
+ *value=(int16*)origdata;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfShort((uint16*)(*value),count);
+ return(TIFFReadDirEntryErrOk);
+ }
+ data=(int16*)_TIFFmalloc(count*2);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8* ma;
+ int16* mb;
+ uint32 n;
+ ma=(uint8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(int16)(*ma++);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* ma;
+ int16* mb;
+ uint32 n;
+ ma=(int8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(int16)(*ma++);
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* ma;
+ int16* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ err=TIFFReadDirEntryCheckRangeSshortLong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int16)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* ma;
+ int16* mb;
+ uint32 n;
+ ma=(int32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ err=TIFFReadDirEntryCheckRangeSshortSlong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int16)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG8:
+ {
+ uint64* ma;
+ int16* mb;
+ uint32 n;
+ ma=(uint64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(ma);
+ err=TIFFReadDirEntryCheckRangeSshortLong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int16)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64* ma;
+ int16* mb;
+ uint32 n;
+ ma=(int64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ err=TIFFReadDirEntryCheckRangeSshortSlong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int16)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryLongArray(TIFF* tif, TIFFDirEntry* direntry, uint32** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ uint32* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,4,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_LONG:
+ *value=(uint32*)origdata;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong(*value,count);
+ return(TIFFReadDirEntryErrOk);
+ case TIFF_SLONG:
+ {
+ int32* m;
+ uint32 n;
+ m=(int32*)origdata;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)m);
+ err=TIFFReadDirEntryCheckRangeLongSlong(*m);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(origdata);
+ return(err);
+ }
+ m++;
+ }
+ *value=(uint32*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ }
+ data=(uint32*)_TIFFmalloc(count*4);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8* ma;
+ uint32* mb;
+ uint32 n;
+ ma=(uint8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(uint32)(*ma++);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* ma;
+ uint32* mb;
+ uint32 n;
+ ma=(int8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ err=TIFFReadDirEntryCheckRangeLongSbyte(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint32)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16* ma;
+ uint32* mb;
+ uint32 n;
+ ma=(uint16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(ma);
+ *mb++=(uint32)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* ma;
+ uint32* mb;
+ uint32 n;
+ ma=(int16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ err=TIFFReadDirEntryCheckRangeLongSshort(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint32)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG8:
+ {
+ uint64* ma;
+ uint32* mb;
+ uint32 n;
+ ma=(uint64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(ma);
+ err=TIFFReadDirEntryCheckRangeLongLong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint32)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64* ma;
+ uint32* mb;
+ uint32 n;
+ ma=(int64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ err=TIFFReadDirEntryCheckRangeLongSlong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint32)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntrySlongArray(TIFF* tif, TIFFDirEntry* direntry, int32** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ int32* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,4,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_LONG:
+ {
+ uint32* m;
+ uint32 n;
+ m=(uint32*)origdata;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)m);
+ err=TIFFReadDirEntryCheckRangeSlongLong(*m);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(origdata);
+ return(err);
+ }
+ m++;
+ }
+ *value=(int32*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG:
+ *value=(int32*)origdata;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong((uint32*)(*value),count);
+ return(TIFFReadDirEntryErrOk);
+ }
+ data=(int32*)_TIFFmalloc(count*4);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8* ma;
+ int32* mb;
+ uint32 n;
+ ma=(uint8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(int32)(*ma++);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* ma;
+ int32* mb;
+ uint32 n;
+ ma=(int8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(int32)(*ma++);
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16* ma;
+ int32* mb;
+ uint32 n;
+ ma=(uint16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(ma);
+ *mb++=(int32)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* ma;
+ int32* mb;
+ uint32 n;
+ ma=(int16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ *mb++=(int32)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG8:
+ {
+ uint64* ma;
+ int32* mb;
+ uint32 n;
+ ma=(uint64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(ma);
+ err=TIFFReadDirEntryCheckRangeSlongLong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int32)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64* ma;
+ int32* mb;
+ uint32 n;
+ ma=(int64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ err=TIFFReadDirEntryCheckRangeSlongSlong8(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(int32)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8Array(TIFF* tif, TIFFDirEntry* direntry, uint64** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ uint64* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,8,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_LONG8:
+ *value=(uint64*)origdata;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong8(*value,count);
+ return(TIFFReadDirEntryErrOk);
+ case TIFF_SLONG8:
+ {
+ int64* m;
+ uint32 n;
+ m=(int64*)origdata;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)m);
+ err=TIFFReadDirEntryCheckRangeLong8Slong8(*m);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(origdata);
+ return(err);
+ }
+ m++;
+ }
+ *value=(uint64*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ }
+ data=(uint64*)_TIFFmalloc(count*8);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8* ma;
+ uint64* mb;
+ uint32 n;
+ ma=(uint8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(uint64)(*ma++);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* ma;
+ uint64* mb;
+ uint32 n;
+ ma=(int8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ err=TIFFReadDirEntryCheckRangeLong8Sbyte(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint64)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16* ma;
+ uint64* mb;
+ uint32 n;
+ ma=(uint16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(ma);
+ *mb++=(uint64)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* ma;
+ uint64* mb;
+ uint32 n;
+ ma=(int16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ err=TIFFReadDirEntryCheckRangeLong8Sshort(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint64)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* ma;
+ uint64* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ *mb++=(uint64)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* ma;
+ uint64* mb;
+ uint32 n;
+ ma=(int32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ err=TIFFReadDirEntryCheckRangeLong8Slong(*ma);
+ if (err!=TIFFReadDirEntryErrOk)
+ break;
+ *mb++=(uint64)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong8Array(TIFF* tif, TIFFDirEntry* direntry, int64** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ int64* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,8,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_LONG8:
+ {
+ uint64* m;
+ uint32 n;
+ m=(uint64*)origdata;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(m);
+ err=TIFFReadDirEntryCheckRangeSlong8Long8(*m);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(origdata);
+ return(err);
+ }
+ m++;
+ }
+ *value=(int64*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ case TIFF_SLONG8:
+ *value=(int64*)origdata;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong8((uint64*)(*value),count);
+ return(TIFFReadDirEntryErrOk);
+ }
+ data=(int64*)_TIFFmalloc(count*8);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8* ma;
+ int64* mb;
+ uint32 n;
+ ma=(uint8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(int64)(*ma++);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* ma;
+ int64* mb;
+ uint32 n;
+ ma=(int8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(int64)(*ma++);
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16* ma;
+ int64* mb;
+ uint32 n;
+ ma=(uint16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(ma);
+ *mb++=(int64)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* ma;
+ int64* mb;
+ uint32 n;
+ ma=(int16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ *mb++=(int64)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* ma;
+ int64* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ *mb++=(int64)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* ma;
+ int64* mb;
+ uint32 n;
+ ma=(int32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ *mb++=(int64)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryFloatArray(TIFF* tif, TIFFDirEntry* direntry, float** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ float* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ case TIFF_DOUBLE:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,4,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_FLOAT:
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong((uint32*)origdata,count);
+ TIFFCvtIEEEDoubleToNative(tif,count,(float*)origdata);
+ *value=(float*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ data=(float*)_TIFFmalloc(count*sizeof(float));
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8* ma;
+ float* mb;
+ uint32 n;
+ ma=(uint8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(float)(*ma++);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* ma;
+ float* mb;
+ uint32 n;
+ ma=(int8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(float)(*ma++);
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16* ma;
+ float* mb;
+ uint32 n;
+ ma=(uint16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(ma);
+ *mb++=(float)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* ma;
+ float* mb;
+ uint32 n;
+ ma=(int16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ *mb++=(float)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* ma;
+ float* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ *mb++=(float)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* ma;
+ float* mb;
+ uint32 n;
+ ma=(int32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ *mb++=(float)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG8:
+ {
+ uint64* ma;
+ float* mb;
+ uint32 n;
+ ma=(uint64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(ma);
+#if defined(__WIN32__) && (_MSC_VER < 1500)
+ /*
+ * XXX: MSVC 6.0 does not support
+ * conversion of 64-bit integers into
+ * floating point values.
+ */
+ *mb++ = _TIFFUInt64ToFloat(*ma++);
+#else
+ *mb++ = (float)(*ma++);
+#endif
+ }
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64* ma;
+ float* mb;
+ uint32 n;
+ ma=(int64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ *mb++=(float)(*ma++);
+ }
+ }
+ break;
+ case TIFF_RATIONAL:
+ {
+ uint32* ma;
+ uint32 maa;
+ uint32 mab;
+ float* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ maa=*ma++;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ mab=*ma++;
+ if (mab==0)
+ *mb++=0.0;
+ else
+ *mb++=(float)maa/(float)mab;
+ }
+ }
+ break;
+ case TIFF_SRATIONAL:
+ {
+ uint32* ma;
+ int32 maa;
+ uint32 mab;
+ float* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ maa=*(int32*)ma;
+ ma++;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ mab=*ma++;
+ if (mab==0)
+ *mb++=0.0;
+ else
+ *mb++=(float)maa/(float)mab;
+ }
+ }
+ break;
+ case TIFF_DOUBLE:
+ {
+ double* ma;
+ float* mb;
+ uint32 n;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong8((uint64*)origdata,count);
+ TIFFCvtIEEEDoubleToNative(tif,count,(double*)origdata);
+ ma=(double*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(float)(*ma++);
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryDoubleArray(TIFF* tif, TIFFDirEntry* direntry, double** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ double* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_LONG8:
+ case TIFF_SLONG8:
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ case TIFF_DOUBLE:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,8,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_DOUBLE:
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong8((uint64*)origdata,count);
+ TIFFCvtIEEEDoubleToNative(tif,count,(double*)origdata);
+ *value=(double*)origdata;
+ return(TIFFReadDirEntryErrOk);
+ }
+ data=(double*)_TIFFmalloc(count*sizeof(double));
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_BYTE:
+ {
+ uint8* ma;
+ double* mb;
+ uint32 n;
+ ma=(uint8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(double)(*ma++);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* ma;
+ double* mb;
+ uint32 n;
+ ma=(int8*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(double)(*ma++);
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16* ma;
+ double* mb;
+ uint32 n;
+ ma=(uint16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(ma);
+ *mb++=(double)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* ma;
+ double* mb;
+ uint32 n;
+ ma=(int16*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ *mb++=(double)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* ma;
+ double* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ *mb++=(double)(*ma++);
+ }
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* ma;
+ double* mb;
+ uint32 n;
+ ma=(int32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ *mb++=(double)(*ma++);
+ }
+ }
+ break;
+ case TIFF_LONG8:
+ {
+ uint64* ma;
+ double* mb;
+ uint32 n;
+ ma=(uint64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(ma);
+#if defined(__WIN32__) && (_MSC_VER < 1500)
+ /*
+ * XXX: MSVC 6.0 does not support
+ * conversion of 64-bit integers into
+ * floating point values.
+ */
+ *mb++ = _TIFFUInt64ToDouble(*ma++);
+#else
+ *mb++ = (double)(*ma++);
+#endif
+ }
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64* ma;
+ double* mb;
+ uint32 n;
+ ma=(int64*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ *mb++=(double)(*ma++);
+ }
+ }
+ break;
+ case TIFF_RATIONAL:
+ {
+ uint32* ma;
+ uint32 maa;
+ uint32 mab;
+ double* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ maa=*ma++;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ mab=*ma++;
+ if (mab==0)
+ *mb++=0.0;
+ else
+ *mb++=(double)maa/(double)mab;
+ }
+ }
+ break;
+ case TIFF_SRATIONAL:
+ {
+ uint32* ma;
+ int32 maa;
+ uint32 mab;
+ double* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ maa=*(int32*)ma;
+ ma++;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ mab=*ma++;
+ if (mab==0)
+ *mb++=0.0;
+ else
+ *mb++=(double)maa/(double)mab;
+ }
+ }
+ break;
+ case TIFF_FLOAT:
+ {
+ float* ma;
+ double* mb;
+ uint32 n;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong((uint32*)origdata,count);
+ TIFFCvtIEEEFloatToNative(tif,count,(float*)origdata);
+ ma=(float*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ *mb++=(double)(*ma++);
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryIfd8Array(TIFF* tif, TIFFDirEntry* direntry, uint64** value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint32 count;
+ void* origdata;
+ uint64* data;
+ switch (direntry->tdir_type)
+ {
+ case TIFF_LONG:
+ case TIFF_LONG8:
+ case TIFF_IFD:
+ case TIFF_IFD8:
+ break;
+ default:
+ return(TIFFReadDirEntryErrType);
+ }
+ err=TIFFReadDirEntryArray(tif,direntry,&count,8,&origdata);
+ if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
+ {
+ *value=0;
+ return(err);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_LONG8:
+ case TIFF_IFD8:
+ *value=(uint64*)origdata;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong8(*value,count);
+ return(TIFFReadDirEntryErrOk);
+ }
+ data=(uint64*)_TIFFmalloc(count*8);
+ if (data==0)
+ {
+ _TIFFfree(origdata);
+ return(TIFFReadDirEntryErrAlloc);
+ }
+ switch (direntry->tdir_type)
+ {
+ case TIFF_LONG:
+ case TIFF_IFD:
+ {
+ uint32* ma;
+ uint64* mb;
+ uint32 n;
+ ma=(uint32*)origdata;
+ mb=data;
+ for (n=0; n<count; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(ma);
+ *mb++=(uint64)(*ma++);
+ }
+ }
+ break;
+ }
+ _TIFFfree(origdata);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ _TIFFfree(data);
+ return(err);
+ }
+ *value=data;
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryPersampleShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value)
+{
+ enum TIFFReadDirEntryErr err;
+ uint16* m;
+ uint16* na;
+ uint16 nb;
+ if (direntry->tdir_count<(uint64)tif->tif_dir.td_samplesperpixel)
+ return(TIFFReadDirEntryErrCount);
+ err=TIFFReadDirEntryShortArray(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ na=m;
+ nb=tif->tif_dir.td_samplesperpixel;
+ *value=*na++;
+ nb--;
+ while (nb>0)
+ {
+ if (*na++!=*value)
+ {
+ err=TIFFReadDirEntryErrPsdif;
+ break;
+ }
+ nb--;
+ }
+ _TIFFfree(m);
+ return(err);
+}
+
+#if 0
+static enum TIFFReadDirEntryErr TIFFReadDirEntryPersampleDouble(TIFF* tif, TIFFDirEntry* direntry, double* value)
+{
+ enum TIFFReadDirEntryErr err;
+ double* m;
+ double* na;
+ uint16 nb;
+ if (direntry->tdir_count<(uint64)tif->tif_dir.td_samplesperpixel)
+ return(TIFFReadDirEntryErrCount);
+ err=TIFFReadDirEntryDoubleArray(tif,direntry,&m);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ na=m;
+ nb=tif->tif_dir.td_samplesperpixel;
+ *value=*na++;
+ nb--;
+ while (nb>0)
+ {
+ if (*na++!=*value)
+ {
+ err=TIFFReadDirEntryErrPsdif;
+ break;
+ }
+ nb--;
+ }
+ _TIFFfree(m);
+ return(err);
+}
+#endif
+
+static void TIFFReadDirEntryCheckedByte(TIFF* tif, TIFFDirEntry* direntry, uint8* value)
+{
+ (void) tif;
+ *value=*(uint8*)(&direntry->tdir_offset);
+}
+
+static void TIFFReadDirEntryCheckedSbyte(TIFF* tif, TIFFDirEntry* direntry, int8* value)
+{
+ (void) tif;
+ *value=*(int8*)(&direntry->tdir_offset);
+}
+
+static void TIFFReadDirEntryCheckedShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value)
+{
+ *value = direntry->tdir_offset.toff_short;
+ /* *value=*(uint16*)(&direntry->tdir_offset); */
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(value);
+}
+
+static void TIFFReadDirEntryCheckedSshort(TIFF* tif, TIFFDirEntry* direntry, int16* value)
+{
+ *value=*(int16*)(&direntry->tdir_offset);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)value);
+}
+
+static void TIFFReadDirEntryCheckedLong(TIFF* tif, TIFFDirEntry* direntry, uint32* value)
+{
+ *value=*(uint32*)(&direntry->tdir_offset);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(value);
+}
+
+static void TIFFReadDirEntryCheckedSlong(TIFF* tif, TIFFDirEntry* direntry, int32* value)
+{
+ *value=*(int32*)(&direntry->tdir_offset);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)value);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedLong8(TIFF* tif, TIFFDirEntry* direntry, uint64* value)
+{
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ enum TIFFReadDirEntryErr err;
+ uint32 offset = direntry->tdir_offset.toff_long;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&offset);
+ err=TIFFReadDirEntryData(tif,offset,8,value);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ }
+ else
+ *value = direntry->tdir_offset.toff_long8;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(value);
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSlong8(TIFF* tif, TIFFDirEntry* direntry, int64* value)
+{
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ enum TIFFReadDirEntryErr err;
+ uint32 offset = direntry->tdir_offset.toff_long;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&offset);
+ err=TIFFReadDirEntryData(tif,offset,8,value);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ }
+ else
+ *value=*(int64*)(&direntry->tdir_offset);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)value);
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedRational(TIFF* tif, TIFFDirEntry* direntry, double* value)
+{
+ UInt64Aligned_t m;
+
+ assert(sizeof(double)==8);
+ assert(sizeof(uint64)==8);
+ assert(sizeof(uint32)==4);
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ enum TIFFReadDirEntryErr err;
+ uint32 offset = direntry->tdir_offset.toff_long;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&offset);
+ err=TIFFReadDirEntryData(tif,offset,8,m.i);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ }
+ else
+ m.l = direntry->tdir_offset.toff_long8;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong(m.i,2);
+ if (m.i[0]==0)
+ *value=0.0;
+ else
+ *value=(double)m.i[0]/(double)m.i[1];
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSrational(TIFF* tif, TIFFDirEntry* direntry, double* value)
+{
+ UInt64Aligned_t m;
+ assert(sizeof(double)==8);
+ assert(sizeof(uint64)==8);
+ assert(sizeof(int32)==4);
+ assert(sizeof(uint32)==4);
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ enum TIFFReadDirEntryErr err;
+ uint32 offset = direntry->tdir_offset.toff_long;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&offset);
+ err=TIFFReadDirEntryData(tif,offset,8,m.i);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ }
+ else
+ m.l=direntry->tdir_offset.toff_long8;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong(m.i,2);
+ if ((int32)m.i[0]==0)
+ *value=0.0;
+ else
+ *value=(double)((int32)m.i[0])/(double)m.i[1];
+ return(TIFFReadDirEntryErrOk);
+}
+
+static void TIFFReadDirEntryCheckedFloat(TIFF* tif, TIFFDirEntry* direntry, float* value)
+{
+ union
+ {
+ float f;
+ uint32 i;
+ } float_union;
+ assert(sizeof(float)==4);
+ assert(sizeof(uint32)==4);
+ assert(sizeof(float_union)==4);
+ float_union.i=*(uint32*)(&direntry->tdir_offset);
+ *value=float_union.f;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)value);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedDouble(TIFF* tif, TIFFDirEntry* direntry, double* value)
+{
+ assert(sizeof(double)==8);
+ assert(sizeof(uint64)==8);
+ assert(sizeof(UInt64Aligned_t)==8);
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ enum TIFFReadDirEntryErr err;
+ uint32 offset = direntry->tdir_offset.toff_long;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&offset);
+ err=TIFFReadDirEntryData(tif,offset,8,value);
+ if (err!=TIFFReadDirEntryErrOk)
+ return(err);
+ }
+ else
+ {
+ UInt64Aligned_t uint64_union;
+ uint64_union.l=direntry->tdir_offset.toff_long8;
+ *value=uint64_union.d;
+ }
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)value);
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSbyte(int8 value)
+{
+ if (value<0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteShort(uint16 value)
+{
+ if (value>0xFF)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSshort(int16 value)
+{
+ if ((value<0)||(value>0xFF))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong(uint32 value)
+{
+ if (value>0xFF)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong(int32 value)
+{
+ if ((value<0)||(value>0xFF))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong8(uint64 value)
+{
+ if (value>0xFF)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong8(int64 value)
+{
+ if ((value<0)||(value>0xFF))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteByte(uint8 value)
+{
+ if (value>0x7F)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteShort(uint16 value)
+{
+ if (value>0x7F)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSshort(int16 value)
+{
+ if ((value<-0x80)||(value>0x7F))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong(uint32 value)
+{
+ if (value>0x7F)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong(int32 value)
+{
+ if ((value<-0x80)||(value>0x7F))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong8(uint64 value)
+{
+ if (value>0x7F)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong8(int64 value)
+{
+ if ((value<-0x80)||(value>0x7F))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSbyte(int8 value)
+{
+ if (value<0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSshort(int16 value)
+{
+ if (value<0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong(uint32 value)
+{
+ if (value>0xFFFF)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong(int32 value)
+{
+ if ((value<0)||(value>0xFFFF))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong8(uint64 value)
+{
+ if (value>0xFFFF)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong8(int64 value)
+{
+ if ((value<0)||(value>0xFFFF))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortShort(uint16 value)
+{
+ if (value>0x7FFF)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong(uint32 value)
+{
+ if (value>0x7FFF)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong(int32 value)
+{
+ if ((value<-0x8000)||(value>0x7FFF))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong8(uint64 value)
+{
+ if (value>0x7FFF)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong8(int64 value)
+{
+ if ((value<-0x8000)||(value>0x7FFF))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSbyte(int8 value)
+{
+ if (value<0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSshort(int16 value)
+{
+ if (value<0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong(int32 value)
+{
+ if (value<0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+/*
+ * Largest 32-bit unsigned integer value.
+ */
+#if defined(__WIN32__) && defined(_MSC_VER)
+# define TIFF_UINT32_MAX 0xFFFFFFFFI64
+#else
+# define TIFF_UINT32_MAX 0xFFFFFFFFLL
+#endif
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeLongLong8(uint64 value)
+{
+ if (value > TIFF_UINT32_MAX)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeLongSlong8(int64 value)
+{
+ if ((value<0) || (value > TIFF_UINT32_MAX))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+#undef TIFF_UINT32_MAX
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeSlongLong(uint32 value)
+{
+ if (value > 0x7FFFFFFFUL)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeSlongLong8(uint64 value)
+{
+ if (value > 0x7FFFFFFFUL)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeSlongSlong8(int64 value)
+{
+ if ((value < 0L-0x80000000L) || (value > 0x7FFFFFFFL))
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeLong8Sbyte(int8 value)
+{
+ if (value < 0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeLong8Sshort(int16 value)
+{
+ if (value < 0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeLong8Slong(int32 value)
+{
+ if (value < 0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeLong8Slong8(int64 value)
+{
+ if (value < 0)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+/*
+ * Largest 64-bit signed integer value.
+ */
+#if defined(__WIN32__) && defined(_MSC_VER)
+# define TIFF_INT64_MAX 0x7FFFFFFFFFFFFFFFI64
+#else
+# define TIFF_INT64_MAX 0x7FFFFFFFFFFFFFFFLL
+#endif
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryCheckRangeSlong8Long8(uint64 value)
+{
+ if (value > TIFF_INT64_MAX)
+ return(TIFFReadDirEntryErrRange);
+ else
+ return(TIFFReadDirEntryErrOk);
+}
+
+#undef TIFF_INT64_MAX
+
+static enum TIFFReadDirEntryErr
+TIFFReadDirEntryData(TIFF* tif, uint64 offset, tmsize_t size, void* dest)
+{
+ assert(size>0);
+ if (!isMapped(tif)) {
+ if (!SeekOK(tif,offset))
+ return(TIFFReadDirEntryErrIo);
+ if (!ReadOK(tif,dest,size))
+ return(TIFFReadDirEntryErrIo);
+ } else {
+ size_t ma,mb;
+ ma=(size_t)offset;
+ mb=ma+size;
+ if (((uint64)ma!=offset)
+ || (mb < ma)
+ || (mb - ma != (size_t) size)
+ || (mb < (size_t)size)
+ || (mb > (size_t)tif->tif_size)
+ )
+ return(TIFFReadDirEntryErrIo);
+ _TIFFmemcpy(dest,tif->tif_base+ma,size);
+ }
+ return(TIFFReadDirEntryErrOk);
+}
+
+static void TIFFReadDirEntryOutputErr(TIFF* tif, enum TIFFReadDirEntryErr err, const char* module, const char* tagname, int recover)
+{
+ if (!recover) {
+ switch (err) {
+ case TIFFReadDirEntryErrCount:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Incorrect count for \"%s\"",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrType:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Incompatible type for \"%s\"",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrIo:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "IO error during reading of \"%s\"",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrRange:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Incorrect value for \"%s\"",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrPsdif:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Cannot handle different values per sample for \"%s\"",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrSizesan:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Sanity check on size of \"%s\" value failed",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrAlloc:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Out of memory reading of \"%s\"",
+ tagname);
+ break;
+ default:
+ assert(0); /* we should never get here */
+ break;
+ }
+ } else {
+ switch (err) {
+ case TIFFReadDirEntryErrCount:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Incorrect count for \"%s\"; tag ignored",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrType:
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Incompatible type for \"%s\"; tag ignored",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrIo:
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "IO error during reading of \"%s\"; tag ignored",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrRange:
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Incorrect value for \"%s\"; tag ignored",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrPsdif:
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Cannot handle different values per sample for \"%s\"; tag ignored",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrSizesan:
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Sanity check on size of \"%s\" value failed; tag ignored",
+ tagname);
+ break;
+ case TIFFReadDirEntryErrAlloc:
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Out of memory reading of \"%s\"; tag ignored",
+ tagname);
+ break;
+ default:
+ assert(0); /* we should never get here */
+ break;
+ }
+ }
+}
+
+/*
+ * Read the next TIFF directory from a file and convert it to the internal
+ * format. We read directories sequentially.
+ */
+int
+TIFFReadDirectory(TIFF* tif)
+{
+ static const char module[] = "TIFFReadDirectory";
+ TIFFDirEntry* dir;
+ uint16 dircount;
+ TIFFDirEntry* dp;
+ uint16 di;
+ const TIFFField* fip;
+ uint32 fii=FAILED_FII;
+ toff_t nextdiroff;
+ tif->tif_diroff=tif->tif_nextdiroff;
+ if (!TIFFCheckDirOffset(tif,tif->tif_nextdiroff))
+ return 0; /* last offset or bad offset (IFD looping) */
+ (*tif->tif_cleanup)(tif); /* cleanup any previous compression state */
+ tif->tif_curdir++;
+ nextdiroff = tif->tif_nextdiroff;
+ dircount=TIFFFetchDirectory(tif,nextdiroff,&dir,&tif->tif_nextdiroff);
+ if (!dircount)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Failed to read directory at offset " TIFF_UINT64_FORMAT,nextdiroff);
+ return 0;
+ }
+ TIFFReadDirectoryCheckOrder(tif,dir,dircount);
+
+ /*
+ * Mark duplicates of any tag to be ignored (bugzilla 1994)
+ * to avoid certain pathological problems.
+ */
+ {
+ TIFFDirEntry* ma;
+ uint16 mb;
+ for (ma=dir, mb=0; mb<dircount; ma++, mb++)
+ {
+ TIFFDirEntry* na;
+ uint16 nb;
+ for (na=ma+1, nb=mb+1; nb<dircount; na++, nb++)
+ {
+ if (ma->tdir_tag==na->tdir_tag)
+ na->tdir_tag=IGNORE;
+ }
+ }
+ }
+
+ tif->tif_flags &= ~TIFF_BEENWRITING; /* reset before new dir */
+ tif->tif_flags &= ~TIFF_BUF4WRITE; /* reset before new dir */
+ /* free any old stuff and reinit */
+ TIFFFreeDirectory(tif);
+ TIFFDefaultDirectory(tif);
+ /*
+ * Electronic Arts writes gray-scale TIFF files
+ * without a PlanarConfiguration directory entry.
+ * Thus we setup a default value here, even though
+ * the TIFF spec says there is no default value.
+ */
+ TIFFSetField(tif,TIFFTAG_PLANARCONFIG,PLANARCONFIG_CONTIG);
+ /*
+ * Setup default value and then make a pass over
+ * the fields to check type and tag information,
+ * and to extract info required to size data
+ * structures. A second pass is made afterwards
+ * to read in everthing not taken in the first pass.
+ * But we must process the Compression tag first
+ * in order to merge in codec-private tag definitions (otherwise
+ * we may get complaints about unknown tags). However, the
+ * Compression tag may be dependent on the SamplesPerPixel
+ * tag value because older TIFF specs permited Compression
+ * to be written as a SamplesPerPixel-count tag entry.
+ * Thus if we don't first figure out the correct SamplesPerPixel
+ * tag value then we may end up ignoring the Compression tag
+ * value because it has an incorrect count value (if the
+ * true value of SamplesPerPixel is not 1).
+ */
+ dp=TIFFReadDirectoryFindEntry(tif,dir,dircount,TIFFTAG_SAMPLESPERPIXEL);
+ if (dp)
+ {
+ if (!TIFFFetchNormalTag(tif,dp,0))
+ goto bad;
+ dp->tdir_tag=IGNORE;
+ }
+ dp=TIFFReadDirectoryFindEntry(tif,dir,dircount,TIFFTAG_COMPRESSION);
+ if (dp)
+ {
+ /*
+ * The 5.0 spec says the Compression tag has one value, while
+ * earlier specs say it has one value per sample. Because of
+ * this, we accept the tag if one value is supplied with either
+ * count.
+ */
+ uint16 value;
+ enum TIFFReadDirEntryErr err;
+ err=TIFFReadDirEntryShort(tif,dp,&value);
+ if (err==TIFFReadDirEntryErrCount)
+ err=TIFFReadDirEntryPersampleShort(tif,dp,&value);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ TIFFReadDirEntryOutputErr(tif,err,module,"Compression",0);
+ goto bad;
+ }
+ if (!TIFFSetField(tif,TIFFTAG_COMPRESSION,value))
+ goto bad;
+ dp->tdir_tag=IGNORE;
+ }
+ else
+ {
+ if (!TIFFSetField(tif,TIFFTAG_COMPRESSION,COMPRESSION_NONE))
+ goto bad;
+ }
+ /*
+ * First real pass over the directory.
+ */
+ for (di=0, dp=dir; di<dircount; di++, dp++)
+ {
+ if (dp->tdir_tag!=IGNORE)
+ {
+ TIFFReadDirectoryFindFieldInfo(tif,dp->tdir_tag,&fii);
+ if (fii == FAILED_FII)
+ {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Unknown field with tag %d (0x%x) encountered",
+ dp->tdir_tag,dp->tdir_tag);
+ /* the following knowingly leaks the
+ anonymous field structure */
+ if (!_TIFFMergeFields(tif,
+ _TIFFCreateAnonField(tif,
+ dp->tdir_tag,
+ (TIFFDataType) dp->tdir_type),
+ 1)) {
+ TIFFWarningExt(tif->tif_clientdata,
+ module,
+ "Registering anonymous field with tag %d (0x%x) failed",
+ dp->tdir_tag,
+ dp->tdir_tag);
+ dp->tdir_tag=IGNORE;
+ } else {
+ TIFFReadDirectoryFindFieldInfo(tif,dp->tdir_tag,&fii);
+ assert(fii != FAILED_FII);
+ }
+ }
+ }
+ if (dp->tdir_tag!=IGNORE)
+ {
+ fip=tif->tif_fields[fii];
+ if (fip->field_bit==FIELD_IGNORE)
+ dp->tdir_tag=IGNORE;
+ else
+ {
+ switch (dp->tdir_tag)
+ {
+ case TIFFTAG_STRIPOFFSETS:
+ case TIFFTAG_STRIPBYTECOUNTS:
+ case TIFFTAG_TILEOFFSETS:
+ case TIFFTAG_TILEBYTECOUNTS:
+ TIFFSetFieldBit(tif,fip->field_bit);
+ break;
+ case TIFFTAG_IMAGEWIDTH:
+ case TIFFTAG_IMAGELENGTH:
+ case TIFFTAG_IMAGEDEPTH:
+ case TIFFTAG_TILELENGTH:
+ case TIFFTAG_TILEWIDTH:
+ case TIFFTAG_TILEDEPTH:
+ case TIFFTAG_PLANARCONFIG:
+ case TIFFTAG_ROWSPERSTRIP:
+ case TIFFTAG_EXTRASAMPLES:
+ if (!TIFFFetchNormalTag(tif,dp,0))
+ goto bad;
+ dp->tdir_tag=IGNORE;
+ break;
+ }
+ }
+ }
+ }
+ /*
+ * XXX: OJPEG hack.
+ * If a) compression is OJPEG, b) planarconfig tag says it's separate,
+ * c) strip offsets/bytecounts tag are both present and
+ * d) both contain exactly one value, then we consistently find
+ * that the buggy implementation of the buggy compression scheme
+ * matches contig planarconfig best. So we 'fix-up' the tag here
+ */
+ if ((tif->tif_dir.td_compression==COMPRESSION_OJPEG)&&
+ (tif->tif_dir.td_planarconfig==PLANARCONFIG_SEPARATE))
+ {
+ if (!_TIFFFillStriles(tif))
+ goto bad;
+ dp=TIFFReadDirectoryFindEntry(tif,dir,dircount,TIFFTAG_STRIPOFFSETS);
+ if ((dp!=0)&&(dp->tdir_count==1))
+ {
+ dp=TIFFReadDirectoryFindEntry(tif,dir,dircount,
+ TIFFTAG_STRIPBYTECOUNTS);
+ if ((dp!=0)&&(dp->tdir_count==1))
+ {
+ tif->tif_dir.td_planarconfig=PLANARCONFIG_CONTIG;
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "Planarconfig tag value assumed incorrect, "
+ "assuming data is contig instead of chunky");
+ }
+ }
+ }
+ /*
+ * Allocate directory structure and setup defaults.
+ */
+ if (!TIFFFieldSet(tif,FIELD_IMAGEDIMENSIONS))
+ {
+ MissingRequired(tif,"ImageLength");
+ goto bad;
+ }
+ /*
+ * Setup appropriate structures (by strip or by tile)
+ */
+ if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
+ tif->tif_dir.td_nstrips = TIFFNumberOfStrips(tif);
+ tif->tif_dir.td_tilewidth = tif->tif_dir.td_imagewidth;
+ tif->tif_dir.td_tilelength = tif->tif_dir.td_rowsperstrip;
+ tif->tif_dir.td_tiledepth = tif->tif_dir.td_imagedepth;
+ tif->tif_flags &= ~TIFF_ISTILED;
+ } else {
+ tif->tif_dir.td_nstrips = TIFFNumberOfTiles(tif);
+ tif->tif_flags |= TIFF_ISTILED;
+ }
+ if (!tif->tif_dir.td_nstrips) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Cannot handle zero number of %s",
+ isTiled(tif) ? "tiles" : "strips");
+ goto bad;
+ }
+ tif->tif_dir.td_stripsperimage = tif->tif_dir.td_nstrips;
+ if (tif->tif_dir.td_planarconfig == PLANARCONFIG_SEPARATE)
+ tif->tif_dir.td_stripsperimage /= tif->tif_dir.td_samplesperpixel;
+ if (!TIFFFieldSet(tif, FIELD_STRIPOFFSETS)) {
+ if ((tif->tif_dir.td_compression==COMPRESSION_OJPEG) &&
+ (isTiled(tif)==0) &&
+ (tif->tif_dir.td_nstrips==1)) {
+ /*
+ * XXX: OJPEG hack.
+ * If a) compression is OJPEG, b) it's not a tiled TIFF,
+ * and c) the number of strips is 1,
+ * then we tolerate the absence of stripoffsets tag,
+ * because, presumably, all required data is in the
+ * JpegInterchangeFormat stream.
+ */
+ TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS);
+ } else {
+ MissingRequired(tif,
+ isTiled(tif) ? "TileOffsets" : "StripOffsets");
+ goto bad;
+ }
+ }
+ /*
+ * Second pass: extract other information.
+ */
+ for (di=0, dp=dir; di<dircount; di++, dp++)
+ {
+ switch (dp->tdir_tag)
+ {
+ case IGNORE:
+ break;
+ case TIFFTAG_MINSAMPLEVALUE:
+ case TIFFTAG_MAXSAMPLEVALUE:
+ case TIFFTAG_BITSPERSAMPLE:
+ case TIFFTAG_DATATYPE:
+ case TIFFTAG_SAMPLEFORMAT:
+ /*
+ * The MinSampleValue, MaxSampleValue, BitsPerSample
+ * DataType and SampleFormat tags are supposed to be
+ * written as one value/sample, but some vendors
+ * incorrectly write one value only -- so we accept
+ * that as well (yech). Other vendors write correct
+ * value for NumberOfSamples, but incorrect one for
+ * BitsPerSample and friends, and we will read this
+ * too.
+ */
+ {
+ uint16 value;
+ enum TIFFReadDirEntryErr err;
+ err=TIFFReadDirEntryShort(tif,dp,&value);
+ if (err==TIFFReadDirEntryErrCount)
+ err=TIFFReadDirEntryPersampleShort(tif,dp,&value);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ fip = TIFFFieldWithTag(tif,dp->tdir_tag);
+ TIFFReadDirEntryOutputErr(tif,err,module,fip ? fip->field_name : "unknown tagname",0);
+ goto bad;
+ }
+ if (!TIFFSetField(tif,dp->tdir_tag,value))
+ goto bad;
+ }
+ break;
+ case TIFFTAG_SMINSAMPLEVALUE:
+ case TIFFTAG_SMAXSAMPLEVALUE:
+ {
+
+ double *data;
+ enum TIFFReadDirEntryErr err;
+ uint32 saved_flags;
+ int m;
+ if (dp->tdir_count != (uint64)tif->tif_dir.td_samplesperpixel)
+ err = TIFFReadDirEntryErrCount;
+ else
+ err = TIFFReadDirEntryDoubleArray(tif, dp, &data);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ fip = TIFFFieldWithTag(tif,dp->tdir_tag);
+ TIFFReadDirEntryOutputErr(tif,err,module,fip ? fip->field_name : "unknown tagname",0);
+ goto bad;
+ }
+ saved_flags = tif->tif_flags;
+ tif->tif_flags |= TIFF_PERSAMPLE;
+ m = TIFFSetField(tif,dp->tdir_tag,data);
+ tif->tif_flags = saved_flags;
+ _TIFFfree(data);
+ if (!m)
+ goto bad;
+ }
+ break;
+ case TIFFTAG_STRIPOFFSETS:
+ case TIFFTAG_TILEOFFSETS:
+#if defined(DEFER_STRILE_LOAD)
+ _TIFFmemcpy( &(tif->tif_dir.td_stripoffset_entry),
+ dp, sizeof(TIFFDirEntry) );
+#else
+ if (!TIFFFetchStripThing(tif,dp,tif->tif_dir.td_nstrips,&tif->tif_dir.td_stripoffset))
+ goto bad;
+#endif
+ break;
+ case TIFFTAG_STRIPBYTECOUNTS:
+ case TIFFTAG_TILEBYTECOUNTS:
+#if defined(DEFER_STRILE_LOAD)
+ _TIFFmemcpy( &(tif->tif_dir.td_stripbytecount_entry),
+ dp, sizeof(TIFFDirEntry) );
+#else
+ if (!TIFFFetchStripThing(tif,dp,tif->tif_dir.td_nstrips,&tif->tif_dir.td_stripbytecount))
+ goto bad;
+#endif
+ break;
+ case TIFFTAG_COLORMAP:
+ case TIFFTAG_TRANSFERFUNCTION:
+ {
+ enum TIFFReadDirEntryErr err;
+ uint32 countpersample;
+ uint32 countrequired;
+ uint32 incrementpersample;
+ uint16* value=NULL;
+ countpersample=(1L<<tif->tif_dir.td_bitspersample);
+ if ((dp->tdir_tag==TIFFTAG_TRANSFERFUNCTION)&&(dp->tdir_count==(uint64)countpersample))
+ {
+ countrequired=countpersample;
+ incrementpersample=0;
+ }
+ else
+ {
+ countrequired=3*countpersample;
+ incrementpersample=countpersample;
+ }
+ if (dp->tdir_count!=(uint64)countrequired)
+ err=TIFFReadDirEntryErrCount;
+ else
+ err=TIFFReadDirEntryShortArray(tif,dp,&value);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ fip = TIFFFieldWithTag(tif,dp->tdir_tag);
+ TIFFReadDirEntryOutputErr(tif,err,module,fip ? fip->field_name : "unknown tagname",1);
+ }
+ else
+ {
+ TIFFSetField(tif,dp->tdir_tag,value,value+incrementpersample,value+2*incrementpersample);
+ _TIFFfree(value);
+ }
+ }
+ break;
+/* BEGIN REV 4.0 COMPATIBILITY */
+ case TIFFTAG_OSUBFILETYPE:
+ {
+ uint16 valueo;
+ uint32 value;
+ if (TIFFReadDirEntryShort(tif,dp,&valueo)==TIFFReadDirEntryErrOk)
+ {
+ switch (valueo)
+ {
+ case OFILETYPE_REDUCEDIMAGE: value=FILETYPE_REDUCEDIMAGE; break;
+ case OFILETYPE_PAGE: value=FILETYPE_PAGE; break;
+ default: value=0; break;
+ }
+ if (value!=0)
+ TIFFSetField(tif,TIFFTAG_SUBFILETYPE,value);
+ }
+ }
+ break;
+/* END REV 4.0 COMPATIBILITY */
+ default:
+ (void) TIFFFetchNormalTag(tif, dp, TRUE);
+ break;
+ }
+ }
+ /*
+ * OJPEG hack:
+ * - If a) compression is OJPEG, and b) photometric tag is missing,
+ * then we consistently find that photometric should be YCbCr
+ * - If a) compression is OJPEG, and b) photometric tag says it's RGB,
+ * then we consistently find that the buggy implementation of the
+ * buggy compression scheme matches photometric YCbCr instead.
+ * - If a) compression is OJPEG, and b) bitspersample tag is missing,
+ * then we consistently find bitspersample should be 8.
+ * - If a) compression is OJPEG, b) samplesperpixel tag is missing,
+ * and c) photometric is RGB or YCbCr, then we consistently find
+ * samplesperpixel should be 3
+ * - If a) compression is OJPEG, b) samplesperpixel tag is missing,
+ * and c) photometric is MINISWHITE or MINISBLACK, then we consistently
+ * find samplesperpixel should be 3
+ */
+ if (tif->tif_dir.td_compression==COMPRESSION_OJPEG)
+ {
+ if (!TIFFFieldSet(tif,FIELD_PHOTOMETRIC))
+ {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Photometric tag is missing, assuming data is YCbCr");
+ if (!TIFFSetField(tif,TIFFTAG_PHOTOMETRIC,PHOTOMETRIC_YCBCR))
+ goto bad;
+ }
+ else if (tif->tif_dir.td_photometric==PHOTOMETRIC_RGB)
+ {
+ tif->tif_dir.td_photometric=PHOTOMETRIC_YCBCR;
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Photometric tag value assumed incorrect, "
+ "assuming data is YCbCr instead of RGB");
+ }
+ if (!TIFFFieldSet(tif,FIELD_BITSPERSAMPLE))
+ {
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "BitsPerSample tag is missing, assuming 8 bits per sample");
+ if (!TIFFSetField(tif,TIFFTAG_BITSPERSAMPLE,8))
+ goto bad;
+ }
+ if (!TIFFFieldSet(tif,FIELD_SAMPLESPERPIXEL))
+ {
+ if (tif->tif_dir.td_photometric==PHOTOMETRIC_RGB)
+ {
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "SamplesPerPixel tag is missing, "
+ "assuming correct SamplesPerPixel value is 3");
+ if (!TIFFSetField(tif,TIFFTAG_SAMPLESPERPIXEL,3))
+ goto bad;
+ }
+ if (tif->tif_dir.td_photometric==PHOTOMETRIC_YCBCR)
+ {
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "SamplesPerPixel tag is missing, "
+ "applying correct SamplesPerPixel value of 3");
+ if (!TIFFSetField(tif,TIFFTAG_SAMPLESPERPIXEL,3))
+ goto bad;
+ }
+ else if ((tif->tif_dir.td_photometric==PHOTOMETRIC_MINISWHITE)
+ || (tif->tif_dir.td_photometric==PHOTOMETRIC_MINISBLACK))
+ {
+ /*
+ * SamplesPerPixel tag is missing, but is not required
+ * by spec. Assume correct SamplesPerPixel value of 1.
+ */
+ if (!TIFFSetField(tif,TIFFTAG_SAMPLESPERPIXEL,1))
+ goto bad;
+ }
+ }
+ }
+ /*
+ * Verify Palette image has a Colormap.
+ */
+ if (tif->tif_dir.td_photometric == PHOTOMETRIC_PALETTE &&
+ !TIFFFieldSet(tif, FIELD_COLORMAP)) {
+ if ( tif->tif_dir.td_bitspersample>=8 && tif->tif_dir.td_samplesperpixel==3)
+ tif->tif_dir.td_photometric = PHOTOMETRIC_RGB;
+ else if (tif->tif_dir.td_bitspersample>=8)
+ tif->tif_dir.td_photometric = PHOTOMETRIC_MINISBLACK;
+ else {
+ MissingRequired(tif, "Colormap");
+ goto bad;
+ }
+ }
+ /*
+ * OJPEG hack:
+ * We do no further messing with strip/tile offsets/bytecounts in OJPEG
+ * TIFFs
+ */
+ if (tif->tif_dir.td_compression!=COMPRESSION_OJPEG)
+ {
+ /*
+ * Attempt to deal with a missing StripByteCounts tag.
+ */
+ if (!TIFFFieldSet(tif, FIELD_STRIPBYTECOUNTS)) {
+ /*
+ * Some manufacturers violate the spec by not giving
+ * the size of the strips. In this case, assume there
+ * is one uncompressed strip of data.
+ */
+ if ((tif->tif_dir.td_planarconfig == PLANARCONFIG_CONTIG &&
+ tif->tif_dir.td_nstrips > 1) ||
+ (tif->tif_dir.td_planarconfig == PLANARCONFIG_SEPARATE &&
+ tif->tif_dir.td_nstrips != (uint32)tif->tif_dir.td_samplesperpixel)) {
+ MissingRequired(tif, "StripByteCounts");
+ goto bad;
+ }
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "TIFF directory is missing required "
+ "\"StripByteCounts\" field, calculating from imagelength");
+ if (EstimateStripByteCounts(tif, dir, dircount) < 0)
+ goto bad;
+ /*
+ * Assume we have wrong StripByteCount value (in case
+ * of single strip) in following cases:
+ * - it is equal to zero along with StripOffset;
+ * - it is larger than file itself (in case of uncompressed
+ * image);
+ * - it is smaller than the size of the bytes per row
+ * multiplied on the number of rows. The last case should
+ * not be checked in the case of writing new image,
+ * because we may do not know the exact strip size
+ * until the whole image will be written and directory
+ * dumped out.
+ */
+ #define BYTECOUNTLOOKSBAD \
+ ( (tif->tif_dir.td_stripbytecount[0] == 0 && tif->tif_dir.td_stripoffset[0] != 0) || \
+ (tif->tif_dir.td_compression == COMPRESSION_NONE && \
+ tif->tif_dir.td_stripbytecount[0] > TIFFGetFileSize(tif) - tif->tif_dir.td_stripoffset[0]) || \
+ (tif->tif_mode == O_RDONLY && \
+ tif->tif_dir.td_compression == COMPRESSION_NONE && \
+ tif->tif_dir.td_stripbytecount[0] < TIFFScanlineSize64(tif) * tif->tif_dir.td_imagelength) )
+
+ } else if (tif->tif_dir.td_nstrips == 1
+ && _TIFFFillStriles(tif)
+ && tif->tif_dir.td_stripoffset[0] != 0
+ && BYTECOUNTLOOKSBAD) {
+ /*
+ * XXX: Plexus (and others) sometimes give a value of
+ * zero for a tag when they don't know what the
+ * correct value is! Try and handle the simple case
+ * of estimating the size of a one strip image.
+ */
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Bogus \"StripByteCounts\" field, ignoring and calculating from imagelength");
+ if(EstimateStripByteCounts(tif, dir, dircount) < 0)
+ goto bad;
+
+#if !defined(DEFER_STRILE_LOAD)
+ } else if (tif->tif_dir.td_planarconfig == PLANARCONFIG_CONTIG
+ && tif->tif_dir.td_nstrips > 2
+ && tif->tif_dir.td_compression == COMPRESSION_NONE
+ && tif->tif_dir.td_stripbytecount[0] != tif->tif_dir.td_stripbytecount[1]
+ && tif->tif_dir.td_stripbytecount[0] != 0
+ && tif->tif_dir.td_stripbytecount[1] != 0 ) {
+ /*
+ * XXX: Some vendors fill StripByteCount array with
+ * absolutely wrong values (it can be equal to
+ * StripOffset array, for example). Catch this case
+ * here.
+ *
+ * We avoid this check if deferring strile loading
+ * as it would always force us to load the strip/tile
+ * information.
+ */
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Wrong \"StripByteCounts\" field, ignoring and calculating from imagelength");
+ if (EstimateStripByteCounts(tif, dir, dircount) < 0)
+ goto bad;
+#endif /* !defined(DEFER_STRILE_LOAD) */
+ }
+ }
+ if (dir)
+ {
+ _TIFFfree(dir);
+ dir=NULL;
+ }
+ if (!TIFFFieldSet(tif, FIELD_MAXSAMPLEVALUE))
+ {
+ if (tif->tif_dir.td_bitspersample>=16)
+ tif->tif_dir.td_maxsamplevalue=0xFFFF;
+ else
+ tif->tif_dir.td_maxsamplevalue = (uint16)((1L<<tif->tif_dir.td_bitspersample)-1);
+ }
+ /*
+ * XXX: We can optimize checking for the strip bounds using the sorted
+ * bytecounts array. See also comments for TIFFAppendToStrip()
+ * function in tif_write.c.
+ */
+#if !defined(DEFER_STRILE_LOAD)
+ if (tif->tif_dir.td_nstrips > 1) {
+ uint32 strip;
+
+ tif->tif_dir.td_stripbytecountsorted = 1;
+ for (strip = 1; strip < tif->tif_dir.td_nstrips; strip++) {
+ if (tif->tif_dir.td_stripoffset[strip - 1] >
+ tif->tif_dir.td_stripoffset[strip]) {
+ tif->tif_dir.td_stripbytecountsorted = 0;
+ break;
+ }
+ }
+ }
+#endif /* !defined(DEFER_STRILE_LOAD) */
+
+ /*
+ * An opportunity for compression mode dependent tag fixup
+ */
+ (*tif->tif_fixuptags)(tif);
+
+ /*
+ * Some manufacturers make life difficult by writing
+ * large amounts of uncompressed data as a single strip.
+ * This is contrary to the recommendations of the spec.
+ * The following makes an attempt at breaking such images
+ * into strips closer to the recommended 8k bytes. A
+ * side effect, however, is that the RowsPerStrip tag
+ * value may be changed.
+ */
+ if ((tif->tif_dir.td_planarconfig==PLANARCONFIG_CONTIG)&&
+ (tif->tif_dir.td_nstrips==1)&&
+ (tif->tif_dir.td_compression==COMPRESSION_NONE)&&
+ ((tif->tif_flags&(TIFF_STRIPCHOP|TIFF_ISTILED))==TIFF_STRIPCHOP))
+ {
+ if ( !_TIFFFillStriles(tif) || !tif->tif_dir.td_stripbytecount )
+ return 0;
+ ChopUpSingleUncompressedStrip(tif);
+ }
+
+ /*
+ * Clear the dirty directory flag.
+ */
+ tif->tif_flags &= ~TIFF_DIRTYDIRECT;
+ tif->tif_flags &= ~TIFF_DIRTYSTRIP;
+
+ /*
+ * Reinitialize i/o since we are starting on a new directory.
+ */
+ tif->tif_row = (uint32) -1;
+ tif->tif_curstrip = (uint32) -1;
+ tif->tif_col = (uint32) -1;
+ tif->tif_curtile = (uint32) -1;
+ tif->tif_tilesize = (tmsize_t) -1;
+
+ tif->tif_scanlinesize = TIFFScanlineSize(tif);
+ if (!tif->tif_scanlinesize) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Cannot handle zero scanline size");
+ return (0);
+ }
+
+ if (isTiled(tif)) {
+ tif->tif_tilesize = TIFFTileSize(tif);
+ if (!tif->tif_tilesize) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Cannot handle zero tile size");
+ return (0);
+ }
+ } else {
+ if (!TIFFStripSize(tif)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Cannot handle zero strip size");
+ return (0);
+ }
+ }
+ return (1);
+bad:
+ if (dir)
+ _TIFFfree(dir);
+ return (0);
+}
+
+static void
+TIFFReadDirectoryCheckOrder(TIFF* tif, TIFFDirEntry* dir, uint16 dircount)
+{
+ static const char module[] = "TIFFReadDirectoryCheckOrder";
+ uint16 m;
+ uint16 n;
+ TIFFDirEntry* o;
+ m=0;
+ for (n=0, o=dir; n<dircount; n++, o++)
+ {
+ if (o->tdir_tag<m)
+ {
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "Invalid TIFF directory; tags are not sorted in ascending order");
+ break;
+ }
+ m=o->tdir_tag+1;
+ }
+}
+
+static TIFFDirEntry*
+TIFFReadDirectoryFindEntry(TIFF* tif, TIFFDirEntry* dir, uint16 dircount, uint16 tagid)
+{
+ TIFFDirEntry* m;
+ uint16 n;
+ (void) tif;
+ for (m=dir, n=0; n<dircount; m++, n++)
+ {
+ if (m->tdir_tag==tagid)
+ return(m);
+ }
+ return(0);
+}
+
+static void
+TIFFReadDirectoryFindFieldInfo(TIFF* tif, uint16 tagid, uint32* fii)
+{
+ int32 ma,mb,mc;
+ ma=-1;
+ mc=(int32)tif->tif_nfields;
+ while (1)
+ {
+ if (ma+1==mc)
+ {
+ *fii = FAILED_FII;
+ return;
+ }
+ mb=(ma+mc)/2;
+ if (tif->tif_fields[mb]->field_tag==(uint32)tagid)
+ break;
+ if (tif->tif_fields[mb]->field_tag<(uint32)tagid)
+ ma=mb;
+ else
+ mc=mb;
+ }
+ while (1)
+ {
+ if (mb==0)
+ break;
+ if (tif->tif_fields[mb-1]->field_tag!=(uint32)tagid)
+ break;
+ mb--;
+ }
+ *fii=mb;
+}
+
+/*
+ * Read custom directory from the arbitarry offset.
+ * The code is very similar to TIFFReadDirectory().
+ */
+int
+TIFFReadCustomDirectory(TIFF* tif, toff_t diroff,
+ const TIFFFieldArray* infoarray)
+{
+ static const char module[] = "TIFFReadCustomDirectory";
+ TIFFDirEntry* dir;
+ uint16 dircount;
+ TIFFDirEntry* dp;
+ uint16 di;
+ const TIFFField* fip;
+ uint32 fii;
+ _TIFFSetupFields(tif, infoarray);
+ dircount=TIFFFetchDirectory(tif,diroff,&dir,NULL);
+ if (!dircount)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Failed to read custom directory at offset " TIFF_UINT64_FORMAT,diroff);
+ return 0;
+ }
+ TIFFFreeDirectory(tif);
+ _TIFFmemset(&tif->tif_dir, 0, sizeof(TIFFDirectory));
+ TIFFReadDirectoryCheckOrder(tif,dir,dircount);
+ for (di=0, dp=dir; di<dircount; di++, dp++)
+ {
+ TIFFReadDirectoryFindFieldInfo(tif,dp->tdir_tag,&fii);
+ if (fii == FAILED_FII)
+ {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Unknown field with tag %d (0x%x) encountered",
+ dp->tdir_tag, dp->tdir_tag);
+ if (!_TIFFMergeFields(tif, _TIFFCreateAnonField(tif,
+ dp->tdir_tag,
+ (TIFFDataType) dp->tdir_type),
+ 1)) {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Registering anonymous field with tag %d (0x%x) failed",
+ dp->tdir_tag, dp->tdir_tag);
+ dp->tdir_tag=IGNORE;
+ } else {
+ TIFFReadDirectoryFindFieldInfo(tif,dp->tdir_tag,&fii);
+ assert( fii != FAILED_FII );
+ }
+ }
+ if (dp->tdir_tag!=IGNORE)
+ {
+ fip=tif->tif_fields[fii];
+ if (fip->field_bit==FIELD_IGNORE)
+ dp->tdir_tag=IGNORE;
+ else
+ {
+ /* check data type */
+ while ((fip->field_type!=TIFF_ANY)&&(fip->field_type!=dp->tdir_type))
+ {
+ fii++;
+ if ((fii==tif->tif_nfields)||
+ (tif->tif_fields[fii]->field_tag!=(uint32)dp->tdir_tag))
+ {
+ fii=0xFFFF;
+ break;
+ }
+ fip=tif->tif_fields[fii];
+ }
+ if (fii==0xFFFF)
+ {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Wrong data type %d for \"%s\"; tag ignored",
+ dp->tdir_type,fip->field_name);
+ dp->tdir_tag=IGNORE;
+ }
+ else
+ {
+ /* check count if known in advance */
+ if ((fip->field_readcount!=TIFF_VARIABLE)&&
+ (fip->field_readcount!=TIFF_VARIABLE2))
+ {
+ uint32 expected;
+ if (fip->field_readcount==TIFF_SPP)
+ expected=(uint32)tif->tif_dir.td_samplesperpixel;
+ else
+ expected=(uint32)fip->field_readcount;
+ if (!CheckDirCount(tif,dp,expected))
+ dp->tdir_tag=IGNORE;
+ }
+ }
+ }
+ switch (dp->tdir_tag)
+ {
+ case IGNORE:
+ break;
+ case EXIFTAG_SUBJECTDISTANCE:
+ (void) TIFFFetchSubjectDistance(tif,dp);
+ break;
+ default:
+ (void) TIFFFetchNormalTag(tif, dp, TRUE);
+ break;
+ }
+ }
+ }
+ if (dir)
+ _TIFFfree(dir);
+ return 1;
+}
+
+/*
+ * EXIF is important special case of custom IFD, so we have a special
+ * function to read it.
+ */
+int
+TIFFReadEXIFDirectory(TIFF* tif, toff_t diroff)
+{
+ const TIFFFieldArray* exifFieldArray;
+ exifFieldArray = _TIFFGetExifFields();
+ return TIFFReadCustomDirectory(tif, diroff, exifFieldArray);
+}
+
+static int
+EstimateStripByteCounts(TIFF* tif, TIFFDirEntry* dir, uint16 dircount)
+{
+ static const char module[] = "EstimateStripByteCounts";
+
+ TIFFDirEntry *dp;
+ TIFFDirectory *td = &tif->tif_dir;
+ uint32 strip;
+
+ _TIFFFillStriles( tif );
+
+ if (td->td_stripbytecount)
+ _TIFFfree(td->td_stripbytecount);
+ td->td_stripbytecount = (uint64*)
+ _TIFFCheckMalloc(tif, td->td_nstrips, sizeof (uint64),
+ "for \"StripByteCounts\" array");
+ if( td->td_stripbytecount == NULL )
+ return -1;
+
+ if (td->td_compression != COMPRESSION_NONE) {
+ uint64 space;
+ uint64 filesize;
+ uint16 n;
+ filesize = TIFFGetFileSize(tif);
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ space=sizeof(TIFFHeaderClassic)+2+dircount*12+4;
+ else
+ space=sizeof(TIFFHeaderBig)+8+dircount*20+8;
+ /* calculate amount of space used by indirect values */
+ for (dp = dir, n = dircount; n > 0; n--, dp++)
+ {
+ uint32 typewidth = TIFFDataWidth((TIFFDataType) dp->tdir_type);
+ uint64 datasize;
+ typewidth = TIFFDataWidth((TIFFDataType) dp->tdir_type);
+ if (typewidth == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Cannot determine size of unknown tag type %d",
+ dp->tdir_type);
+ return -1;
+ }
+ datasize=(uint64)typewidth*dp->tdir_count;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ if (datasize<=4)
+ datasize=0;
+ }
+ else
+ {
+ if (datasize<=8)
+ datasize=0;
+ }
+ space+=datasize;
+ }
+ space = filesize - space;
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+ space /= td->td_samplesperpixel;
+ for (strip = 0; strip < td->td_nstrips; strip++)
+ td->td_stripbytecount[strip] = space;
+ /*
+ * This gross hack handles the case were the offset to
+ * the last strip is past the place where we think the strip
+ * should begin. Since a strip of data must be contiguous,
+ * it's safe to assume that we've overestimated the amount
+ * of data in the strip and trim this number back accordingly.
+ */
+ strip--;
+ if (td->td_stripoffset[strip]+td->td_stripbytecount[strip] > filesize)
+ td->td_stripbytecount[strip] = filesize - td->td_stripoffset[strip];
+ } else if (isTiled(tif)) {
+ uint64 bytespertile = TIFFTileSize64(tif);
+
+ for (strip = 0; strip < td->td_nstrips; strip++)
+ td->td_stripbytecount[strip] = bytespertile;
+ } else {
+ uint64 rowbytes = TIFFScanlineSize64(tif);
+ uint32 rowsperstrip = td->td_imagelength/td->td_stripsperimage;
+ for (strip = 0; strip < td->td_nstrips; strip++)
+ td->td_stripbytecount[strip] = rowbytes * rowsperstrip;
+ }
+ TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
+ if (!TIFFFieldSet(tif, FIELD_ROWSPERSTRIP))
+ td->td_rowsperstrip = td->td_imagelength;
+ return 1;
+}
+
+static void
+MissingRequired(TIFF* tif, const char* tagname)
+{
+ static const char module[] = "MissingRequired";
+
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "TIFF directory is missing required \"%s\" field",
+ tagname);
+}
+
+/*
+ * Check the directory offset against the list of already seen directory
+ * offsets. This is a trick to prevent IFD looping. The one can create TIFF
+ * file with looped directory pointers. We will maintain a list of already
+ * seen directories and check every IFD offset against that list.
+ */
+static int
+TIFFCheckDirOffset(TIFF* tif, uint64 diroff)
+{
+ uint16 n;
+
+ if (diroff == 0) /* no more directories */
+ return 0;
+
+ for (n = 0; n < tif->tif_dirnumber && tif->tif_dirlist; n++) {
+ if (tif->tif_dirlist[n] == diroff)
+ return 0;
+ }
+
+ tif->tif_dirnumber++;
+
+ if (tif->tif_dirnumber > tif->tif_dirlistsize) {
+ uint64* new_dirlist;
+
+ /*
+ * XXX: Reduce memory allocation granularity of the dirlist
+ * array.
+ */
+ new_dirlist = (uint64*)_TIFFCheckRealloc(tif, tif->tif_dirlist,
+ tif->tif_dirnumber, 2 * sizeof(uint64), "for IFD list");
+ if (!new_dirlist)
+ return 0;
+ tif->tif_dirlistsize = 2 * tif->tif_dirnumber;
+ tif->tif_dirlist = new_dirlist;
+ }
+
+ tif->tif_dirlist[tif->tif_dirnumber - 1] = diroff;
+
+ return 1;
+}
+
+/*
+ * Check the count field of a directory entry against a known value. The
+ * caller is expected to skip/ignore the tag if there is a mismatch.
+ */
+static int
+CheckDirCount(TIFF* tif, TIFFDirEntry* dir, uint32 count)
+{
+ if ((uint64)count > dir->tdir_count) {
+ const TIFFField* fip = TIFFFieldWithTag(tif, dir->tdir_tag);
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+ "incorrect count for field \"%s\" (" TIFF_UINT64_FORMAT ", expecting %u); tag ignored",
+ fip ? fip->field_name : "unknown tagname",
+ dir->tdir_count, count);
+ return (0);
+ } else if ((uint64)count < dir->tdir_count) {
+ const TIFFField* fip = TIFFFieldWithTag(tif, dir->tdir_tag);
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+ "incorrect count for field \"%s\" (" TIFF_UINT64_FORMAT ", expecting %u); tag trimmed",
+ fip ? fip->field_name : "unknown tagname",
+ dir->tdir_count, count);
+ dir->tdir_count = count;
+ return (1);
+ }
+ return (1);
+}
+
+/*
+ * Read IFD structure from the specified offset. If the pointer to
+ * nextdiroff variable has been specified, read it too. Function returns a
+ * number of fields in the directory or 0 if failed.
+ */
+static uint16
+TIFFFetchDirectory(TIFF* tif, uint64 diroff, TIFFDirEntry** pdir,
+ uint64 *nextdiroff)
+{
+ static const char module[] = "TIFFFetchDirectory";
+
+ void* origdir;
+ uint16 dircount16;
+ uint32 dirsize;
+ TIFFDirEntry* dir;
+ uint8* ma;
+ TIFFDirEntry* mb;
+ uint16 n;
+
+ assert(pdir);
+
+ tif->tif_diroff = diroff;
+ if (nextdiroff)
+ *nextdiroff = 0;
+ if (!isMapped(tif)) {
+ if (!SeekOK(tif, tif->tif_diroff)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Seek error accessing TIFF directory",
+ tif->tif_name);
+ return 0;
+ }
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ if (!ReadOK(tif, &dircount16, sizeof (uint16))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Can not read TIFF directory count",
+ tif->tif_name);
+ return 0;
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&dircount16);
+ if (dircount16>4096)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Sanity check on directory count failed, this is probably not a valid IFD offset");
+ return 0;
+ }
+ dirsize = 12;
+ } else {
+ uint64 dircount64;
+ if (!ReadOK(tif, &dircount64, sizeof (uint64))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Can not read TIFF directory count",
+ tif->tif_name);
+ return 0;
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ if (dircount64>4096)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Sanity check on directory count failed, this is probably not a valid IFD offset");
+ return 0;
+ }
+ dircount16 = (uint16)dircount64;
+ dirsize = 20;
+ }
+ origdir = _TIFFCheckMalloc(tif, dircount16,
+ dirsize, "to read TIFF directory");
+ if (origdir == NULL)
+ return 0;
+ if (!ReadOK(tif, origdir, (tmsize_t)(dircount16*dirsize))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%.100s: Can not read TIFF directory",
+ tif->tif_name);
+ _TIFFfree(origdir);
+ return 0;
+ }
+ /*
+ * Read offset to next directory for sequential scans if
+ * needed.
+ */
+ if (nextdiroff)
+ {
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 nextdiroff32;
+ if (!ReadOK(tif, &nextdiroff32, sizeof(uint32)))
+ nextdiroff32 = 0;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&nextdiroff32);
+ *nextdiroff=nextdiroff32;
+ } else {
+ if (!ReadOK(tif, nextdiroff, sizeof(uint64)))
+ *nextdiroff = 0;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(nextdiroff);
+ }
+ }
+ } else {
+ tmsize_t m;
+ tmsize_t off = (tmsize_t) tif->tif_diroff;
+ if ((uint64)off!=tif->tif_diroff)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Can not read TIFF directory count");
+ return(0);
+ }
+
+ /*
+ * Check for integer overflow when validating the dir_off,
+ * otherwise a very high offset may cause an OOB read and
+ * crash the client. Make two comparisons instead of
+ *
+ * off + sizeof(uint16) > tif->tif_size
+ *
+ * to avoid overflow.
+ */
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ m=off+sizeof(uint16);
+ if ((m<off)||(m<(tmsize_t)sizeof(uint16))||(m>tif->tif_size)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Can not read TIFF directory count");
+ return 0;
+ } else {
+ _TIFFmemcpy(&dircount16, tif->tif_base + off,
+ sizeof(uint16));
+ }
+ off += sizeof (uint16);
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&dircount16);
+ if (dircount16>4096)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Sanity check on directory count failed, this is probably not a valid IFD offset");
+ return 0;
+ }
+ dirsize = 12;
+ }
+ else
+ {
+ tmsize_t m;
+ uint64 dircount64;
+ m=off+sizeof(uint64);
+ if ((m<off)||(m<(tmsize_t)sizeof(uint64))||(m>tif->tif_size)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Can not read TIFF directory count");
+ return 0;
+ } else {
+ _TIFFmemcpy(&dircount64, tif->tif_base + off,
+ sizeof(uint64));
+ }
+ off += sizeof (uint64);
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ if (dircount64>4096)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Sanity check on directory count failed, this is probably not a valid IFD offset");
+ return 0;
+ }
+ dircount16 = (uint16)dircount64;
+ dirsize = 20;
+ }
+ if (dircount16 == 0 )
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Sanity check on directory count failed, zero tag directories not supported");
+ return 0;
+ }
+ origdir = _TIFFCheckMalloc(tif, dircount16,
+ dirsize,
+ "to read TIFF directory");
+ if (origdir == NULL)
+ return 0;
+ m=off+dircount16*dirsize;
+ if ((m<off)||(m<(tmsize_t)(dircount16*dirsize))||(m>tif->tif_size)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Can not read TIFF directory");
+ _TIFFfree(origdir);
+ return 0;
+ } else {
+ _TIFFmemcpy(origdir, tif->tif_base + off,
+ dircount16 * dirsize);
+ }
+ if (nextdiroff) {
+ off += dircount16 * dirsize;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 nextdiroff32;
+ m=off+sizeof(uint32);
+ if ((m<off)||(m<(tmsize_t)sizeof(uint32))||(m>tif->tif_size))
+ nextdiroff32 = 0;
+ else
+ _TIFFmemcpy(&nextdiroff32, tif->tif_base + off,
+ sizeof (uint32));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&nextdiroff32);
+ *nextdiroff = nextdiroff32;
+ }
+ else
+ {
+ m=off+sizeof(uint64);
+ if ((m<off)||(m<(tmsize_t)sizeof(uint64))||(m>tif->tif_size))
+ *nextdiroff = 0;
+ else
+ _TIFFmemcpy(nextdiroff, tif->tif_base + off,
+ sizeof (uint64));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(nextdiroff);
+ }
+ }
+ }
+ dir = (TIFFDirEntry*)_TIFFCheckMalloc(tif, dircount16,
+ sizeof(TIFFDirEntry),
+ "to read TIFF directory");
+ if (dir==0)
+ {
+ _TIFFfree(origdir);
+ return 0;
+ }
+ ma=(uint8*)origdir;
+ mb=dir;
+ for (n=0; n<dircount16; n++)
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ mb->tdir_tag=*(uint16*)ma;
+ ma+=sizeof(uint16);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)ma);
+ mb->tdir_type=*(uint16*)ma;
+ ma+=sizeof(uint16);
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)ma);
+ mb->tdir_count=(uint64)(*(uint32*)ma);
+ ma+=sizeof(uint32);
+ *(uint32*)(&mb->tdir_offset)=*(uint32*)ma;
+ ma+=sizeof(uint32);
+ }
+ else
+ {
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)ma);
+ mb->tdir_count=TIFFReadUInt64(ma);
+ ma+=sizeof(uint64);
+ mb->tdir_offset.toff_long8=TIFFReadUInt64(ma);
+ ma+=sizeof(uint64);
+ }
+ mb++;
+ }
+ _TIFFfree(origdir);
+ *pdir = dir;
+ return dircount16;
+}
+
+/*
+ * Fetch a tag that is not handled by special case code.
+ */
+static int
+TIFFFetchNormalTag(TIFF* tif, TIFFDirEntry* dp, int recover)
+{
+ static const char module[] = "TIFFFetchNormalTag";
+ enum TIFFReadDirEntryErr err;
+ uint32 fii;
+ const TIFFField* fip = NULL;
+ TIFFReadDirectoryFindFieldInfo(tif,dp->tdir_tag,&fii);
+ if( fii == FAILED_FII )
+ {
+ TIFFErrorExt(tif->tif_clientdata, "TIFFFetchNormalTag",
+ "No definition found for tag %d",
+ dp->tdir_tag);
+ return 0;
+ }
+ fip=tif->tif_fields[fii];
+ assert(fip->set_field_type!=TIFF_SETGET_OTHER); /* if so, we shouldn't arrive here but deal with this in specialized code */
+ assert(fip->set_field_type!=TIFF_SETGET_INT); /* if so, we shouldn't arrive here as this is only the case for pseudo-tags */
+ err=TIFFReadDirEntryErrOk;
+ switch (fip->set_field_type)
+ {
+ case TIFF_SETGET_UNDEFINED:
+ break;
+ case TIFF_SETGET_ASCII:
+ {
+ uint8* data;
+ assert(fip->field_passcount==0);
+ err=TIFFReadDirEntryByteArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ uint8* ma;
+ uint32 mb;
+ int n;
+ ma=data;
+ mb=0;
+ while (mb<(uint32)dp->tdir_count)
+ {
+ if (*ma==0)
+ break;
+ ma++;
+ mb++;
+ }
+ if (mb+1<(uint32)dp->tdir_count)
+ TIFFWarningExt(tif->tif_clientdata,module,"ASCII value for tag \"%s\" contains null byte in value; value incorrectly truncated during reading due to implementation limitations",fip->field_name);
+ else if (mb+1>(uint32)dp->tdir_count)
+ {
+ uint8* o;
+ TIFFWarningExt(tif->tif_clientdata,module,"ASCII value for tag \"%s\" does not end in null byte",fip->field_name);
+ if ((uint32)dp->tdir_count+1!=dp->tdir_count+1)
+ o=NULL;
+ else
+ o=_TIFFmalloc((uint32)dp->tdir_count+1);
+ if (o==NULL)
+ {
+ if (data!=NULL)
+ _TIFFfree(data);
+ return(0);
+ }
+ _TIFFmemcpy(o,data,(uint32)dp->tdir_count);
+ o[(uint32)dp->tdir_count]=0;
+ if (data!=0)
+ _TIFFfree(data);
+ data=o;
+ }
+ n=TIFFSetField(tif,dp->tdir_tag,data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!n)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_UINT8:
+ {
+ uint8 data=0;
+ assert(fip->field_readcount==1);
+ assert(fip->field_passcount==0);
+ err=TIFFReadDirEntryByte(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ if (!TIFFSetField(tif,dp->tdir_tag,data))
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_UINT16:
+ {
+ uint16 data;
+ assert(fip->field_readcount==1);
+ assert(fip->field_passcount==0);
+ err=TIFFReadDirEntryShort(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ if (!TIFFSetField(tif,dp->tdir_tag,data))
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_UINT32:
+ {
+ uint32 data;
+ assert(fip->field_readcount==1);
+ assert(fip->field_passcount==0);
+ err=TIFFReadDirEntryLong(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ if (!TIFFSetField(tif,dp->tdir_tag,data))
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_UINT64:
+ {
+ uint64 data;
+ assert(fip->field_readcount==1);
+ assert(fip->field_passcount==0);
+ err=TIFFReadDirEntryLong8(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ if (!TIFFSetField(tif,dp->tdir_tag,data))
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_FLOAT:
+ {
+ float data;
+ assert(fip->field_readcount==1);
+ assert(fip->field_passcount==0);
+ err=TIFFReadDirEntryFloat(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ if (!TIFFSetField(tif,dp->tdir_tag,data))
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_DOUBLE:
+ {
+ double data;
+ assert(fip->field_readcount==1);
+ assert(fip->field_passcount==0);
+ err=TIFFReadDirEntryDouble(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ if (!TIFFSetField(tif,dp->tdir_tag,data))
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_IFD8:
+ {
+ uint64 data;
+ assert(fip->field_readcount==1);
+ assert(fip->field_passcount==0);
+ err=TIFFReadDirEntryIfd8(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ if (!TIFFSetField(tif,dp->tdir_tag,data))
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_UINT16_PAIR:
+ {
+ uint16* data;
+ assert(fip->field_readcount==2);
+ assert(fip->field_passcount==0);
+ if (dp->tdir_count!=2) {
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "incorrect count for field \"%s\", expected 2, got %d",
+ fip->field_name,(int)dp->tdir_count);
+ return(0);
+ }
+ err=TIFFReadDirEntryShortArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,data[0],data[1]);
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C0_UINT8:
+ {
+ uint8* data;
+ assert(fip->field_readcount>=1);
+ assert(fip->field_passcount==0);
+ if (dp->tdir_count!=(uint64)fip->field_readcount) {
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "incorrect count for field \"%s\", expected %d, got %d",
+ fip->field_name,(int) fip->field_readcount, (int)dp->tdir_count);
+ return 0;
+ }
+ else
+ {
+ err=TIFFReadDirEntryByteArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C0_UINT16:
+ {
+ uint16* data;
+ assert(fip->field_readcount>=1);
+ assert(fip->field_passcount==0);
+ if (dp->tdir_count!=(uint64)fip->field_readcount)
+ /* corrupt file */;
+ else
+ {
+ err=TIFFReadDirEntryShortArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C0_UINT32:
+ {
+ uint32* data;
+ assert(fip->field_readcount>=1);
+ assert(fip->field_passcount==0);
+ if (dp->tdir_count!=(uint64)fip->field_readcount)
+ /* corrupt file */;
+ else
+ {
+ err=TIFFReadDirEntryLongArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C0_FLOAT:
+ {
+ float* data;
+ assert(fip->field_readcount>=1);
+ assert(fip->field_passcount==0);
+ if (dp->tdir_count!=(uint64)fip->field_readcount)
+ /* corrupt file */;
+ else
+ {
+ err=TIFFReadDirEntryFloatArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C16_ASCII:
+ {
+ uint8* data;
+ assert(fip->field_readcount==TIFF_VARIABLE);
+ assert(fip->field_passcount==1);
+ if (dp->tdir_count>0xFFFF)
+ err=TIFFReadDirEntryErrCount;
+ else
+ {
+ err=TIFFReadDirEntryByteArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint16)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C16_UINT8:
+ {
+ uint8* data;
+ assert(fip->field_readcount==TIFF_VARIABLE);
+ assert(fip->field_passcount==1);
+ if (dp->tdir_count>0xFFFF)
+ err=TIFFReadDirEntryErrCount;
+ else
+ {
+ err=TIFFReadDirEntryByteArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint16)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C16_UINT16:
+ {
+ uint16* data;
+ assert(fip->field_readcount==TIFF_VARIABLE);
+ assert(fip->field_passcount==1);
+ if (dp->tdir_count>0xFFFF)
+ err=TIFFReadDirEntryErrCount;
+ else
+ {
+ err=TIFFReadDirEntryShortArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint16)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C16_UINT32:
+ {
+ uint32* data;
+ assert(fip->field_readcount==TIFF_VARIABLE);
+ assert(fip->field_passcount==1);
+ if (dp->tdir_count>0xFFFF)
+ err=TIFFReadDirEntryErrCount;
+ else
+ {
+ err=TIFFReadDirEntryLongArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint16)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C16_UINT64:
+ {
+ uint64* data;
+ assert(fip->field_readcount==TIFF_VARIABLE);
+ assert(fip->field_passcount==1);
+ if (dp->tdir_count>0xFFFF)
+ err=TIFFReadDirEntryErrCount;
+ else
+ {
+ err=TIFFReadDirEntryLong8Array(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint16)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C16_FLOAT:
+ {
+ float* data;
+ assert(fip->field_readcount==TIFF_VARIABLE);
+ assert(fip->field_passcount==1);
+ if (dp->tdir_count>0xFFFF)
+ err=TIFFReadDirEntryErrCount;
+ else
+ {
+ err=TIFFReadDirEntryFloatArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint16)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C16_DOUBLE:
+ {
+ double* data;
+ assert(fip->field_readcount==TIFF_VARIABLE);
+ assert(fip->field_passcount==1);
+ if (dp->tdir_count>0xFFFF)
+ err=TIFFReadDirEntryErrCount;
+ else
+ {
+ err=TIFFReadDirEntryDoubleArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint16)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C16_IFD8:
+ {
+ uint64* data;
+ assert(fip->field_readcount==TIFF_VARIABLE);
+ assert(fip->field_passcount==1);
+ if (dp->tdir_count>0xFFFF)
+ err=TIFFReadDirEntryErrCount;
+ else
+ {
+ err=TIFFReadDirEntryIfd8Array(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint16)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_ASCII:
+ {
+ uint8* data;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntryByteArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_UINT8:
+ {
+ uint8* data;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntryByteArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_SINT8:
+ {
+ int8* data = NULL;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntrySbyteArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_UINT16:
+ {
+ uint16* data;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntryShortArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_SINT16:
+ {
+ int16* data = NULL;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntrySshortArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_UINT32:
+ {
+ uint32* data;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntryLongArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_SINT32:
+ {
+ int32* data = NULL;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntrySlongArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_UINT64:
+ {
+ uint64* data;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntryLong8Array(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_SINT64:
+ {
+ int64* data = NULL;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntrySlong8Array(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_FLOAT:
+ {
+ float* data;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntryFloatArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_DOUBLE:
+ {
+ double* data;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntryDoubleArray(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ case TIFF_SETGET_C32_IFD8:
+ {
+ uint64* data;
+ assert(fip->field_readcount==TIFF_VARIABLE2);
+ assert(fip->field_passcount==1);
+ err=TIFFReadDirEntryIfd8Array(tif,dp,&data);
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ int m;
+ m=TIFFSetField(tif,dp->tdir_tag,(uint32)(dp->tdir_count),data);
+ if (data!=0)
+ _TIFFfree(data);
+ if (!m)
+ return(0);
+ }
+ }
+ break;
+ default:
+ assert(0); /* we should never get here */
+ break;
+ }
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ TIFFReadDirEntryOutputErr(tif,err,module,fip ? fip->field_name : "unknown tagname",recover);
+ return(0);
+ }
+ return(1);
+}
+
+/*
+ * Fetch a set of offsets or lengths.
+ * While this routine says "strips", in fact it's also used for tiles.
+ */
+static int
+TIFFFetchStripThing(TIFF* tif, TIFFDirEntry* dir, uint32 nstrips, uint64** lpp)
+{
+ static const char module[] = "TIFFFetchStripThing";
+ enum TIFFReadDirEntryErr err;
+ uint64* data;
+ err=TIFFReadDirEntryLong8Array(tif,dir,&data);
+ if (err!=TIFFReadDirEntryErrOk)
+ {
+ const TIFFField* fip = TIFFFieldWithTag(tif,dir->tdir_tag);
+ TIFFReadDirEntryOutputErr(tif,err,module,fip ? fip->field_name : "unknown tagname",0);
+ return(0);
+ }
+ if (dir->tdir_count!=(uint64)nstrips)
+ {
+ uint64* resizeddata;
+ resizeddata=(uint64*)_TIFFCheckMalloc(tif,nstrips,sizeof(uint64),"for strip array");
+ if (resizeddata==0) {
+ _TIFFfree(data);
+ return(0);
+ }
+ if (dir->tdir_count<(uint64)nstrips)
+ {
+ _TIFFmemcpy(resizeddata,data,(uint32)dir->tdir_count*sizeof(uint64));
+ _TIFFmemset(resizeddata+(uint32)dir->tdir_count,0,(nstrips-(uint32)dir->tdir_count)*sizeof(uint64));
+ }
+ else
+ _TIFFmemcpy(resizeddata,data,nstrips*sizeof(uint64));
+ _TIFFfree(data);
+ data=resizeddata;
+ }
+ *lpp=data;
+ return(1);
+}
+
+/*
+ * Fetch and set the SubjectDistance EXIF tag.
+ */
+static int
+TIFFFetchSubjectDistance(TIFF* tif, TIFFDirEntry* dir)
+{
+ static const char module[] = "TIFFFetchSubjectDistance";
+ enum TIFFReadDirEntryErr err;
+ UInt64Aligned_t m;
+ m.l=0;
+ assert(sizeof(double)==8);
+ assert(sizeof(uint64)==8);
+ assert(sizeof(uint32)==4);
+ if (dir->tdir_count!=1)
+ err=TIFFReadDirEntryErrCount;
+ else if (dir->tdir_type!=TIFF_RATIONAL)
+ err=TIFFReadDirEntryErrType;
+ else
+ {
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 offset;
+ offset=*(uint32*)(&dir->tdir_offset);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&offset);
+ err=TIFFReadDirEntryData(tif,offset,8,m.i);
+ }
+ else
+ {
+ m.l=dir->tdir_offset.toff_long8;
+ err=TIFFReadDirEntryErrOk;
+ }
+ }
+ if (err==TIFFReadDirEntryErrOk)
+ {
+ double n;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong(m.i,2);
+ if (m.i[0]==0)
+ n=0.0;
+ else if (m.i[0]==0xFFFFFFFF)
+ /*
+ * XXX: Numerator 0xFFFFFFFF means that we have infinite
+ * distance. Indicate that with a negative floating point
+ * SubjectDistance value.
+ */
+ n=-1.0;
+ else
+ n=(double)m.i[0]/(double)m.i[1];
+ return(TIFFSetField(tif,dir->tdir_tag,n));
+ }
+ else
+ {
+ TIFFReadDirEntryOutputErr(tif,err,module,"SubjectDistance",TRUE);
+ return(0);
+ }
+}
+
+/*
+ * Replace a single strip (tile) of uncompressed data by multiple strips
+ * (tiles), each approximately STRIP_SIZE_DEFAULT bytes. This is useful for
+ * dealing with large images or for dealing with machines with a limited
+ * amount memory.
+ */
+static void
+ChopUpSingleUncompressedStrip(TIFF* tif)
+{
+ register TIFFDirectory *td = &tif->tif_dir;
+ uint64 bytecount;
+ uint64 offset;
+ uint32 rowblock;
+ uint64 rowblockbytes;
+ uint64 stripbytes;
+ uint32 strip;
+ uint64 nstrips64;
+ uint32 nstrips32;
+ uint32 rowsperstrip;
+ uint64* newcounts;
+ uint64* newoffsets;
+
+ bytecount = td->td_stripbytecount[0];
+ offset = td->td_stripoffset[0];
+ assert(td->td_planarconfig == PLANARCONFIG_CONTIG);
+ if ((td->td_photometric == PHOTOMETRIC_YCBCR)&&
+ (!isUpSampled(tif)))
+ rowblock = td->td_ycbcrsubsampling[1];
+ else
+ rowblock = 1;
+ rowblockbytes = TIFFVTileSize64(tif, rowblock);
+ /*
+ * Make the rows hold at least one scanline, but fill specified amount
+ * of data if possible.
+ */
+ if (rowblockbytes > STRIP_SIZE_DEFAULT) {
+ stripbytes = rowblockbytes;
+ rowsperstrip = rowblock;
+ } else if (rowblockbytes > 0 ) {
+ uint32 rowblocksperstrip;
+ rowblocksperstrip = (uint32) (STRIP_SIZE_DEFAULT / rowblockbytes);
+ rowsperstrip = rowblocksperstrip * rowblock;
+ stripbytes = rowblocksperstrip * rowblockbytes;
+ }
+ else
+ return;
+
+ /*
+ * never increase the number of strips in an image
+ */
+ if (rowsperstrip >= td->td_rowsperstrip)
+ return;
+ nstrips64 = TIFFhowmany_64(bytecount, stripbytes);
+ if ((nstrips64==0)||(nstrips64>0xFFFFFFFF)) /* something is wonky, do nothing. */
+ return;
+ nstrips32 = (uint32)nstrips64;
+
+ newcounts = (uint64*) _TIFFCheckMalloc(tif, nstrips32, sizeof (uint64),
+ "for chopped \"StripByteCounts\" array");
+ newoffsets = (uint64*) _TIFFCheckMalloc(tif, nstrips32, sizeof (uint64),
+ "for chopped \"StripOffsets\" array");
+ if (newcounts == NULL || newoffsets == NULL) {
+ /*
+ * Unable to allocate new strip information, give up and use
+ * the original one strip information.
+ */
+ if (newcounts != NULL)
+ _TIFFfree(newcounts);
+ if (newoffsets != NULL)
+ _TIFFfree(newoffsets);
+ return;
+ }
+ /*
+ * Fill the strip information arrays with new bytecounts and offsets
+ * that reflect the broken-up format.
+ */
+ for (strip = 0; strip < nstrips32; strip++) {
+ if (stripbytes > bytecount)
+ stripbytes = bytecount;
+ newcounts[strip] = stripbytes;
+ newoffsets[strip] = offset;
+ offset += stripbytes;
+ bytecount -= stripbytes;
+ }
+ /*
+ * Replace old single strip info with multi-strip info.
+ */
+ td->td_stripsperimage = td->td_nstrips = nstrips32;
+ TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
+
+ _TIFFfree(td->td_stripbytecount);
+ _TIFFfree(td->td_stripoffset);
+ td->td_stripbytecount = newcounts;
+ td->td_stripoffset = newoffsets;
+ td->td_stripbytecountsorted = 1;
+}
+
+int _TIFFFillStriles( TIFF *tif )
+{
+#if defined(DEFER_STRILE_LOAD)
+ register TIFFDirectory *td = &tif->tif_dir;
+ int return_value = 1;
+
+ if( td->td_stripoffset != NULL )
+ return 1;
+
+ if( td->td_stripoffset_entry.tdir_count == 0 )
+ return 0;
+
+ if (!TIFFFetchStripThing(tif,&(td->td_stripoffset_entry),
+ td->td_nstrips,&td->td_stripoffset))
+ {
+ return_value = 0;
+ }
+
+ if (!TIFFFetchStripThing(tif,&(td->td_stripbytecount_entry),
+ td->td_nstrips,&td->td_stripbytecount))
+ {
+ return_value = 0;
+ }
+
+ _TIFFmemset( &(td->td_stripoffset_entry), 0, sizeof(TIFFDirEntry));
+ _TIFFmemset( &(td->td_stripbytecount_entry), 0, sizeof(TIFFDirEntry));
+
+ if (tif->tif_dir.td_nstrips > 1 && return_value == 1 ) {
+ uint32 strip;
+
+ tif->tif_dir.td_stripbytecountsorted = 1;
+ for (strip = 1; strip < tif->tif_dir.td_nstrips; strip++) {
+ if (tif->tif_dir.td_stripoffset[strip - 1] >
+ tif->tif_dir.td_stripoffset[strip]) {
+ tif->tif_dir.td_stripbytecountsorted = 0;
+ break;
+ }
+ }
+ }
+
+ return return_value;
+#else /* !defined(DEFER_STRILE_LOAD) */
+ (void) tif;
+ return 1;
+#endif
+}
+
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+ #endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirwrite.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirwrite.c
new file mode 100644
index 0000000..ac13cd4
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dirwrite.c
@@ -0,0 +1,2912 @@
+/* $Id: tif_dirwrite.c,v 1.77 2012-07-06 19:18:31 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Directory Write Support Routines.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+#ifdef HAVE_IEEEFP
+#define TIFFCvtNativeToIEEEFloat(tif, n, fp)
+#define TIFFCvtNativeToIEEEDouble(tif, n, dp)
+#else
+extern void TIFFCvtNativeToIEEEFloat(TIFF* tif, uint32 n, float* fp);
+extern void TIFFCvtNativeToIEEEDouble(TIFF* tif, uint32 n, double* dp);
+#endif
+
+static int TIFFWriteDirectorySec(TIFF* tif, int isimage, int imagedone, uint64* pdiroff);
+
+static int TIFFWriteDirectoryTagSampleformatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, double* value);
+#if 0
+static int TIFFWriteDirectoryTagSampleformatPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value);
+#endif
+
+static int TIFFWriteDirectoryTagAscii(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, char* value);
+static int TIFFWriteDirectoryTagUndefinedArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint8* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagByte(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint8 value);
+#endif
+static int TIFFWriteDirectoryTagByteArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint8* value);
+#if 0
+static int TIFFWriteDirectoryTagBytePerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint8 value);
+#endif
+#ifdef notdef
+static int TIFFWriteDirectoryTagSbyte(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int8 value);
+#endif
+static int TIFFWriteDirectoryTagSbyteArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int8* value);
+#if 0
+static int TIFFWriteDirectoryTagSbytePerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int8 value);
+#endif
+static int TIFFWriteDirectoryTagShort(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint16 value);
+static int TIFFWriteDirectoryTagShortArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint16* value);
+static int TIFFWriteDirectoryTagShortPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint16 value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagSshort(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int16 value);
+#endif
+static int TIFFWriteDirectoryTagSshortArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int16* value);
+#if 0
+static int TIFFWriteDirectoryTagSshortPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int16 value);
+#endif
+static int TIFFWriteDirectoryTagLong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 value);
+static int TIFFWriteDirectoryTagLongArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint32* value);
+#if 0
+static int TIFFWriteDirectoryTagLongPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 value);
+#endif
+#ifdef notdef
+static int TIFFWriteDirectoryTagSlong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int32 value);
+#endif
+static int TIFFWriteDirectoryTagSlongArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int32* value);
+#if 0
+static int TIFFWriteDirectoryTagSlongPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int32 value);
+#endif
+#ifdef notdef
+static int TIFFWriteDirectoryTagLong8(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint64 value);
+#endif
+static int TIFFWriteDirectoryTagLong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagSlong8(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int64 value);
+#endif
+static int TIFFWriteDirectoryTagSlong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int64* value);
+static int TIFFWriteDirectoryTagRational(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value);
+static int TIFFWriteDirectoryTagRationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value);
+static int TIFFWriteDirectoryTagSrationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagFloat(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, float value);
+#endif
+static int TIFFWriteDirectoryTagFloatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value);
+#if 0
+static int TIFFWriteDirectoryTagFloatPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, float value);
+#endif
+#ifdef notdef
+static int TIFFWriteDirectoryTagDouble(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value);
+#endif
+static int TIFFWriteDirectoryTagDoubleArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, double* value);
+#if 0
+static int TIFFWriteDirectoryTagDoublePerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value);
+#endif
+static int TIFFWriteDirectoryTagIfdArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint32* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagIfd8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value);
+#endif
+static int TIFFWriteDirectoryTagShortLong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 value);
+static int TIFFWriteDirectoryTagLongLong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value);
+static int TIFFWriteDirectoryTagIfdIfd8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagShortLongLong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value);
+#endif
+static int TIFFWriteDirectoryTagColormap(TIFF* tif, uint32* ndir, TIFFDirEntry* dir);
+static int TIFFWriteDirectoryTagTransferfunction(TIFF* tif, uint32* ndir, TIFFDirEntry* dir);
+static int TIFFWriteDirectoryTagSubifd(TIFF* tif, uint32* ndir, TIFFDirEntry* dir);
+
+static int TIFFWriteDirectoryTagCheckedAscii(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, char* value);
+static int TIFFWriteDirectoryTagCheckedUndefinedArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint8* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagCheckedByte(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint8 value);
+#endif
+static int TIFFWriteDirectoryTagCheckedByteArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint8* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagCheckedSbyte(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int8 value);
+#endif
+static int TIFFWriteDirectoryTagCheckedSbyteArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int8* value);
+static int TIFFWriteDirectoryTagCheckedShort(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint16 value);
+static int TIFFWriteDirectoryTagCheckedShortArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint16* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagCheckedSshort(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int16 value);
+#endif
+static int TIFFWriteDirectoryTagCheckedSshortArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int16* value);
+static int TIFFWriteDirectoryTagCheckedLong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 value);
+static int TIFFWriteDirectoryTagCheckedLongArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint32* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagCheckedSlong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int32 value);
+#endif
+static int TIFFWriteDirectoryTagCheckedSlongArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int32* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagCheckedLong8(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint64 value);
+#endif
+static int TIFFWriteDirectoryTagCheckedLong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagCheckedSlong8(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int64 value);
+#endif
+static int TIFFWriteDirectoryTagCheckedSlong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int64* value);
+static int TIFFWriteDirectoryTagCheckedRational(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value);
+static int TIFFWriteDirectoryTagCheckedRationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value);
+static int TIFFWriteDirectoryTagCheckedSrationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagCheckedFloat(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, float value);
+#endif
+static int TIFFWriteDirectoryTagCheckedFloatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value);
+#ifdef notdef
+static int TIFFWriteDirectoryTagCheckedDouble(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value);
+#endif
+static int TIFFWriteDirectoryTagCheckedDoubleArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, double* value);
+static int TIFFWriteDirectoryTagCheckedIfdArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint32* value);
+static int TIFFWriteDirectoryTagCheckedIfd8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value);
+
+static int TIFFWriteDirectoryTagData(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint16 datatype, uint32 count, uint32 datalength, void* data);
+
+static int TIFFLinkDirectory(TIFF*);
+
+/*
+ * Write the contents of the current directory
+ * to the specified file. This routine doesn't
+ * handle overwriting a directory with auxiliary
+ * storage that's been changed.
+ */
+int
+TIFFWriteDirectory(TIFF* tif)
+{
+ return TIFFWriteDirectorySec(tif,TRUE,TRUE,NULL);
+}
+
+/*
+ * Similar to TIFFWriteDirectory(), writes the directory out
+ * but leaves all data structures in memory so that it can be
+ * written again. This will make a partially written TIFF file
+ * readable before it is successfully completed/closed.
+ */
+int
+TIFFCheckpointDirectory(TIFF* tif)
+{
+ int rc;
+ /* Setup the strips arrays, if they haven't already been. */
+ if (tif->tif_dir.td_stripoffset == NULL)
+ (void) TIFFSetupStrips(tif);
+ rc = TIFFWriteDirectorySec(tif,TRUE,FALSE,NULL);
+ (void) TIFFSetWriteOffset(tif, TIFFSeekFile(tif, 0, SEEK_END));
+ return rc;
+}
+
+int
+TIFFWriteCustomDirectory(TIFF* tif, uint64* pdiroff)
+{
+ return TIFFWriteDirectorySec(tif,FALSE,FALSE,pdiroff);
+}
+
+/*
+ * Similar to TIFFWriteDirectory(), but if the directory has already
+ * been written once, it is relocated to the end of the file, in case it
+ * has changed in size. Note that this will result in the loss of the
+ * previously used directory space.
+ */
+int
+TIFFRewriteDirectory( TIFF *tif )
+{
+ static const char module[] = "TIFFRewriteDirectory";
+
+ /* We don't need to do anything special if it hasn't been written. */
+ if( tif->tif_diroff == 0 )
+ return TIFFWriteDirectory( tif );
+
+ /*
+ * Find and zero the pointer to this directory, so that TIFFLinkDirectory
+ * will cause it to be added after this directories current pre-link.
+ */
+
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ if (tif->tif_header.classic.tiff_diroff == tif->tif_diroff)
+ {
+ tif->tif_header.classic.tiff_diroff = 0;
+ tif->tif_diroff = 0;
+
+ TIFFSeekFile(tif,4,SEEK_SET);
+ if (!WriteOK(tif, &(tif->tif_header.classic.tiff_diroff),4))
+ {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error updating TIFF header");
+ return (0);
+ }
+ }
+ else
+ {
+ uint32 nextdir;
+ nextdir = tif->tif_header.classic.tiff_diroff;
+ while(1) {
+ uint16 dircount;
+ uint32 nextnextdir;
+
+ if (!SeekOK(tif, nextdir) ||
+ !ReadOK(tif, &dircount, 2)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory count");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&dircount);
+ (void) TIFFSeekFile(tif,
+ nextdir+2+dircount*12, SEEK_SET);
+ if (!ReadOK(tif, &nextnextdir, 4)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory link");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&nextnextdir);
+ if (nextnextdir==tif->tif_diroff)
+ {
+ uint32 m;
+ m=0;
+ (void) TIFFSeekFile(tif,
+ nextdir+2+dircount*12, SEEK_SET);
+ if (!WriteOK(tif, &m, 4)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing directory link");
+ return (0);
+ }
+ tif->tif_diroff=0;
+ break;
+ }
+ nextdir=nextnextdir;
+ }
+ }
+ }
+ else
+ {
+ if (tif->tif_header.big.tiff_diroff == tif->tif_diroff)
+ {
+ tif->tif_header.big.tiff_diroff = 0;
+ tif->tif_diroff = 0;
+
+ TIFFSeekFile(tif,8,SEEK_SET);
+ if (!WriteOK(tif, &(tif->tif_header.big.tiff_diroff),8))
+ {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error updating TIFF header");
+ return (0);
+ }
+ }
+ else
+ {
+ uint64 nextdir;
+ nextdir = tif->tif_header.big.tiff_diroff;
+ while(1) {
+ uint64 dircount64;
+ uint16 dircount;
+ uint64 nextnextdir;
+
+ if (!SeekOK(tif, nextdir) ||
+ !ReadOK(tif, &dircount64, 8)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory count");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ if (dircount64>0xFFFF)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Sanity check on tag count failed, likely corrupt TIFF");
+ return (0);
+ }
+ dircount=(uint16)dircount64;
+ (void) TIFFSeekFile(tif,
+ nextdir+8+dircount*20, SEEK_SET);
+ if (!ReadOK(tif, &nextnextdir, 8)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory link");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&nextnextdir);
+ if (nextnextdir==tif->tif_diroff)
+ {
+ uint64 m;
+ m=0;
+ (void) TIFFSeekFile(tif,
+ nextdir+8+dircount*20, SEEK_SET);
+ if (!WriteOK(tif, &m, 8)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing directory link");
+ return (0);
+ }
+ tif->tif_diroff=0;
+ break;
+ }
+ nextdir=nextnextdir;
+ }
+ }
+ }
+
+ /*
+ * Now use TIFFWriteDirectory() normally.
+ */
+
+ return TIFFWriteDirectory( tif );
+}
+
+static int
+TIFFWriteDirectorySec(TIFF* tif, int isimage, int imagedone, uint64* pdiroff)
+{
+ static const char module[] = "TIFFWriteDirectorySec";
+ uint32 ndir;
+ TIFFDirEntry* dir;
+ uint32 dirsize;
+ void* dirmem;
+ uint32 m;
+ if (tif->tif_mode == O_RDONLY)
+ return (1);
+
+ _TIFFFillStriles( tif );
+
+ /*
+ * Clear write state so that subsequent images with
+ * different characteristics get the right buffers
+ * setup for them.
+ */
+ if (imagedone)
+ {
+ if (tif->tif_flags & TIFF_POSTENCODE)
+ {
+ tif->tif_flags &= ~TIFF_POSTENCODE;
+ if (!(*tif->tif_postencode)(tif))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Error post-encoding before directory write");
+ return (0);
+ }
+ }
+ (*tif->tif_close)(tif); /* shutdown encoder */
+ /*
+ * Flush any data that might have been written
+ * by the compression close+cleanup routines. But
+ * be careful not to write stuff if we didn't add data
+ * in the previous steps as the "rawcc" data may well be
+ * a previously read tile/strip in mixed read/write mode.
+ */
+ if (tif->tif_rawcc > 0
+ && (tif->tif_flags & TIFF_BEENWRITING) != 0 )
+ {
+ if( !TIFFFlushData1(tif) )
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error flushing data before directory write");
+ return (0);
+ }
+ }
+ if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata)
+ {
+ _TIFFfree(tif->tif_rawdata);
+ tif->tif_rawdata = NULL;
+ tif->tif_rawcc = 0;
+ tif->tif_rawdatasize = 0;
+ tif->tif_rawdataoff = 0;
+ tif->tif_rawdataloaded = 0;
+ }
+ tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP);
+ }
+ dir=NULL;
+ dirmem=NULL;
+ dirsize=0;
+ while (1)
+ {
+ ndir=0;
+ if (isimage)
+ {
+ if (TIFFFieldSet(tif,FIELD_IMAGEDIMENSIONS))
+ {
+ if (!TIFFWriteDirectoryTagShortLong(tif,&ndir,dir,TIFFTAG_IMAGEWIDTH,tif->tif_dir.td_imagewidth))
+ goto bad;
+ if (!TIFFWriteDirectoryTagShortLong(tif,&ndir,dir,TIFFTAG_IMAGELENGTH,tif->tif_dir.td_imagelength))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_TILEDIMENSIONS))
+ {
+ if (!TIFFWriteDirectoryTagShortLong(tif,&ndir,dir,TIFFTAG_TILEWIDTH,tif->tif_dir.td_tilewidth))
+ goto bad;
+ if (!TIFFWriteDirectoryTagShortLong(tif,&ndir,dir,TIFFTAG_TILELENGTH,tif->tif_dir.td_tilelength))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_RESOLUTION))
+ {
+ if (!TIFFWriteDirectoryTagRational(tif,&ndir,dir,TIFFTAG_XRESOLUTION,tif->tif_dir.td_xresolution))
+ goto bad;
+ if (!TIFFWriteDirectoryTagRational(tif,&ndir,dir,TIFFTAG_YRESOLUTION,tif->tif_dir.td_yresolution))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_POSITION))
+ {
+ if (!TIFFWriteDirectoryTagRational(tif,&ndir,dir,TIFFTAG_XPOSITION,tif->tif_dir.td_xposition))
+ goto bad;
+ if (!TIFFWriteDirectoryTagRational(tif,&ndir,dir,TIFFTAG_YPOSITION,tif->tif_dir.td_yposition))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_SUBFILETYPE))
+ {
+ if (!TIFFWriteDirectoryTagLong(tif,&ndir,dir,TIFFTAG_SUBFILETYPE,tif->tif_dir.td_subfiletype))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_BITSPERSAMPLE))
+ {
+ if (!TIFFWriteDirectoryTagShortPerSample(tif,&ndir,dir,TIFFTAG_BITSPERSAMPLE,tif->tif_dir.td_bitspersample))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_COMPRESSION))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_COMPRESSION,tif->tif_dir.td_compression))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_PHOTOMETRIC))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_PHOTOMETRIC,tif->tif_dir.td_photometric))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_THRESHHOLDING))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_THRESHHOLDING,tif->tif_dir.td_threshholding))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_FILLORDER))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_FILLORDER,tif->tif_dir.td_fillorder))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_ORIENTATION))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_ORIENTATION,tif->tif_dir.td_orientation))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_SAMPLESPERPIXEL))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_SAMPLESPERPIXEL,tif->tif_dir.td_samplesperpixel))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_ROWSPERSTRIP))
+ {
+ if (!TIFFWriteDirectoryTagShortLong(tif,&ndir,dir,TIFFTAG_ROWSPERSTRIP,tif->tif_dir.td_rowsperstrip))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_MINSAMPLEVALUE))
+ {
+ if (!TIFFWriteDirectoryTagShortPerSample(tif,&ndir,dir,TIFFTAG_MINSAMPLEVALUE,tif->tif_dir.td_minsamplevalue))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_MAXSAMPLEVALUE))
+ {
+ if (!TIFFWriteDirectoryTagShortPerSample(tif,&ndir,dir,TIFFTAG_MAXSAMPLEVALUE,tif->tif_dir.td_maxsamplevalue))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_PLANARCONFIG))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_PLANARCONFIG,tif->tif_dir.td_planarconfig))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_RESOLUTIONUNIT))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_RESOLUTIONUNIT,tif->tif_dir.td_resolutionunit))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_PAGENUMBER))
+ {
+ if (!TIFFWriteDirectoryTagShortArray(tif,&ndir,dir,TIFFTAG_PAGENUMBER,2,&tif->tif_dir.td_pagenumber[0]))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_STRIPBYTECOUNTS))
+ {
+ if (!isTiled(tif))
+ {
+ if (!TIFFWriteDirectoryTagLongLong8Array(tif,&ndir,dir,TIFFTAG_STRIPBYTECOUNTS,tif->tif_dir.td_nstrips,tif->tif_dir.td_stripbytecount))
+ goto bad;
+ }
+ else
+ {
+ if (!TIFFWriteDirectoryTagLongLong8Array(tif,&ndir,dir,TIFFTAG_TILEBYTECOUNTS,tif->tif_dir.td_nstrips,tif->tif_dir.td_stripbytecount))
+ goto bad;
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_STRIPOFFSETS))
+ {
+ if (!isTiled(tif))
+ {
+ if (!TIFFWriteDirectoryTagLongLong8Array(tif,&ndir,dir,TIFFTAG_STRIPOFFSETS,tif->tif_dir.td_nstrips,tif->tif_dir.td_stripoffset))
+ goto bad;
+ }
+ else
+ {
+ if (!TIFFWriteDirectoryTagLongLong8Array(tif,&ndir,dir,TIFFTAG_TILEOFFSETS,tif->tif_dir.td_nstrips,tif->tif_dir.td_stripoffset))
+ goto bad;
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_COLORMAP))
+ {
+ if (!TIFFWriteDirectoryTagColormap(tif,&ndir,dir))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_EXTRASAMPLES))
+ {
+ if (tif->tif_dir.td_extrasamples)
+ {
+ uint16 na;
+ uint16* nb;
+ TIFFGetFieldDefaulted(tif,TIFFTAG_EXTRASAMPLES,&na,&nb);
+ if (!TIFFWriteDirectoryTagShortArray(tif,&ndir,dir,TIFFTAG_EXTRASAMPLES,na,nb))
+ goto bad;
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_SAMPLEFORMAT))
+ {
+ if (!TIFFWriteDirectoryTagShortPerSample(tif,&ndir,dir,TIFFTAG_SAMPLEFORMAT,tif->tif_dir.td_sampleformat))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_SMINSAMPLEVALUE))
+ {
+ if (!TIFFWriteDirectoryTagSampleformatArray(tif,&ndir,dir,TIFFTAG_SMINSAMPLEVALUE,tif->tif_dir.td_samplesperpixel,tif->tif_dir.td_sminsamplevalue))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_SMAXSAMPLEVALUE))
+ {
+ if (!TIFFWriteDirectoryTagSampleformatArray(tif,&ndir,dir,TIFFTAG_SMAXSAMPLEVALUE,tif->tif_dir.td_samplesperpixel,tif->tif_dir.td_smaxsamplevalue))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_IMAGEDEPTH))
+ {
+ if (!TIFFWriteDirectoryTagLong(tif,&ndir,dir,TIFFTAG_IMAGEDEPTH,tif->tif_dir.td_imagedepth))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_TILEDEPTH))
+ {
+ if (!TIFFWriteDirectoryTagLong(tif,&ndir,dir,TIFFTAG_TILEDEPTH,tif->tif_dir.td_tiledepth))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_HALFTONEHINTS))
+ {
+ if (!TIFFWriteDirectoryTagShortArray(tif,&ndir,dir,TIFFTAG_HALFTONEHINTS,2,&tif->tif_dir.td_halftonehints[0]))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_YCBCRSUBSAMPLING))
+ {
+ if (!TIFFWriteDirectoryTagShortArray(tif,&ndir,dir,TIFFTAG_YCBCRSUBSAMPLING,2,&tif->tif_dir.td_ycbcrsubsampling[0]))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_YCBCRPOSITIONING))
+ {
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,TIFFTAG_YCBCRPOSITIONING,tif->tif_dir.td_ycbcrpositioning))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_REFBLACKWHITE))
+ {
+ if (!TIFFWriteDirectoryTagRationalArray(tif,&ndir,dir,TIFFTAG_REFERENCEBLACKWHITE,6,tif->tif_dir.td_refblackwhite))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_TRANSFERFUNCTION))
+ {
+ if (!TIFFWriteDirectoryTagTransferfunction(tif,&ndir,dir))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_INKNAMES))
+ {
+ if (!TIFFWriteDirectoryTagAscii(tif,&ndir,dir,TIFFTAG_INKNAMES,tif->tif_dir.td_inknameslen,tif->tif_dir.td_inknames))
+ goto bad;
+ }
+ if (TIFFFieldSet(tif,FIELD_SUBIFD))
+ {
+ if (!TIFFWriteDirectoryTagSubifd(tif,&ndir,dir))
+ goto bad;
+ }
+ {
+ uint32 n;
+ for (n=0; n<tif->tif_nfields; n++) {
+ const TIFFField* o;
+ o = tif->tif_fields[n];
+ if ((o->field_bit>=FIELD_CODEC)&&(TIFFFieldSet(tif,o->field_bit)))
+ {
+ switch (o->get_field_type)
+ {
+ case TIFF_SETGET_ASCII:
+ {
+ uint32 pa;
+ char* pb;
+ assert(o->field_type==TIFF_ASCII);
+ assert(o->field_readcount==TIFF_VARIABLE);
+ assert(o->field_passcount==0);
+ TIFFGetField(tif,o->field_tag,&pb);
+ pa=(uint32)(strlen(pb));
+ if (!TIFFWriteDirectoryTagAscii(tif,&ndir,dir,o->field_tag,pa,pb))
+ goto bad;
+ }
+ break;
+ case TIFF_SETGET_UINT16:
+ {
+ uint16 p;
+ assert(o->field_type==TIFF_SHORT);
+ assert(o->field_readcount==1);
+ assert(o->field_passcount==0);
+ TIFFGetField(tif,o->field_tag,&p);
+ if (!TIFFWriteDirectoryTagShort(tif,&ndir,dir,o->field_tag,p))
+ goto bad;
+ }
+ break;
+ case TIFF_SETGET_UINT32:
+ {
+ uint32 p;
+ assert(o->field_type==TIFF_LONG);
+ assert(o->field_readcount==1);
+ assert(o->field_passcount==0);
+ TIFFGetField(tif,o->field_tag,&p);
+ if (!TIFFWriteDirectoryTagLong(tif,&ndir,dir,o->field_tag,p))
+ goto bad;
+ }
+ break;
+ case TIFF_SETGET_C32_UINT8:
+ {
+ uint32 pa;
+ void* pb;
+ assert(o->field_type==TIFF_UNDEFINED);
+ assert(o->field_readcount==TIFF_VARIABLE2);
+ assert(o->field_passcount==1);
+ TIFFGetField(tif,o->field_tag,&pa,&pb);
+ if (!TIFFWriteDirectoryTagUndefinedArray(tif,&ndir,dir,o->field_tag,pa,pb))
+ goto bad;
+ }
+ break;
+ default:
+ assert(0); /* we should never get here */
+ break;
+ }
+ }
+ }
+ }
+ }
+ for (m=0; m<(uint32)(tif->tif_dir.td_customValueCount); m++)
+ {
+ switch (tif->tif_dir.td_customValues[m].info->field_type)
+ {
+ case TIFF_ASCII:
+ if (!TIFFWriteDirectoryTagAscii(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_UNDEFINED:
+ if (!TIFFWriteDirectoryTagUndefinedArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_BYTE:
+ if (!TIFFWriteDirectoryTagByteArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_SBYTE:
+ if (!TIFFWriteDirectoryTagSbyteArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_SHORT:
+ if (!TIFFWriteDirectoryTagShortArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_SSHORT:
+ if (!TIFFWriteDirectoryTagSshortArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_LONG:
+ if (!TIFFWriteDirectoryTagLongArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_SLONG:
+ if (!TIFFWriteDirectoryTagSlongArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_LONG8:
+ if (!TIFFWriteDirectoryTagLong8Array(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_SLONG8:
+ if (!TIFFWriteDirectoryTagSlong8Array(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_RATIONAL:
+ if (!TIFFWriteDirectoryTagRationalArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_SRATIONAL:
+ if (!TIFFWriteDirectoryTagSrationalArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_FLOAT:
+ if (!TIFFWriteDirectoryTagFloatArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_DOUBLE:
+ if (!TIFFWriteDirectoryTagDoubleArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_IFD:
+ if (!TIFFWriteDirectoryTagIfdArray(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ case TIFF_IFD8:
+ if (!TIFFWriteDirectoryTagIfdIfd8Array(tif,&ndir,dir,tif->tif_dir.td_customValues[m].info->field_tag,tif->tif_dir.td_customValues[m].count,tif->tif_dir.td_customValues[m].value))
+ goto bad;
+ break;
+ default:
+ assert(0); /* we should never get here */
+ break;
+ }
+ }
+ if (dir!=NULL)
+ break;
+ dir=_TIFFmalloc(ndir*sizeof(TIFFDirEntry));
+ if (dir==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ goto bad;
+ }
+ if (isimage)
+ {
+ if ((tif->tif_diroff==0)&&(!TIFFLinkDirectory(tif)))
+ goto bad;
+ }
+ else
+ tif->tif_diroff=(TIFFSeekFile(tif,0,SEEK_END)+1)&(~1);
+ if (pdiroff!=NULL)
+ *pdiroff=tif->tif_diroff;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ dirsize=2+ndir*12+4;
+ else
+ dirsize=8+ndir*20+8;
+ tif->tif_dataoff=tif->tif_diroff+dirsize;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ tif->tif_dataoff=(uint32)tif->tif_dataoff;
+ if ((tif->tif_dataoff<tif->tif_diroff)||(tif->tif_dataoff<(uint64)dirsize))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Maximum TIFF file size exceeded");
+ goto bad;
+ }
+ if (tif->tif_dataoff&1)
+ tif->tif_dataoff++;
+ if (isimage)
+ tif->tif_curdir++;
+ }
+ if (isimage)
+ {
+ if (TIFFFieldSet(tif,FIELD_SUBIFD)&&(tif->tif_subifdoff==0))
+ {
+ uint32 na;
+ TIFFDirEntry* nb;
+ for (na=0, nb=dir; ; na++, nb++)
+ {
+ assert(na<ndir);
+ if (nb->tdir_tag==TIFFTAG_SUBIFD)
+ break;
+ }
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ tif->tif_subifdoff=tif->tif_diroff+2+na*12+8;
+ else
+ tif->tif_subifdoff=tif->tif_diroff+8+na*20+12;
+ }
+ }
+ dirmem=_TIFFmalloc(dirsize);
+ if (dirmem==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ goto bad;
+ }
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint8* n;
+ uint32 nTmp;
+ TIFFDirEntry* o;
+ n=dirmem;
+ *(uint16*)n=ndir;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)n);
+ n+=2;
+ o=dir;
+ for (m=0; m<ndir; m++)
+ {
+ *(uint16*)n=o->tdir_tag;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)n);
+ n+=2;
+ *(uint16*)n=o->tdir_type;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)n);
+ n+=2;
+ nTmp = (uint32)o->tdir_count;
+ _TIFFmemcpy(n,&nTmp,4);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)n);
+ n+=4;
+ /* This is correct. The data has been */
+ /* swabbed previously in TIFFWriteDirectoryTagData */
+ _TIFFmemcpy(n,&o->tdir_offset,4);
+ n+=4;
+ o++;
+ }
+ nTmp = (uint32)tif->tif_nextdiroff;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&nTmp);
+ _TIFFmemcpy(n,&nTmp,4);
+ }
+ else
+ {
+ uint8* n;
+ TIFFDirEntry* o;
+ n=dirmem;
+ *(uint64*)n=ndir;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)n);
+ n+=8;
+ o=dir;
+ for (m=0; m<ndir; m++)
+ {
+ *(uint16*)n=o->tdir_tag;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)n);
+ n+=2;
+ *(uint16*)n=o->tdir_type;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)n);
+ n+=2;
+ _TIFFmemcpy(n,&o->tdir_count,8);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)n);
+ n+=8;
+ _TIFFmemcpy(n,&o->tdir_offset,8);
+ n+=8;
+ o++;
+ }
+ _TIFFmemcpy(n,&tif->tif_nextdiroff,8);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)n);
+ }
+ _TIFFfree(dir);
+ dir=NULL;
+ if (!SeekOK(tif,tif->tif_diroff))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"IO error writing directory");
+ goto bad;
+ }
+ if (!WriteOK(tif,dirmem,(tmsize_t)dirsize))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"IO error writing directory");
+ goto bad;
+ }
+ _TIFFfree(dirmem);
+ if (imagedone)
+ {
+ TIFFFreeDirectory(tif);
+ tif->tif_flags &= ~TIFF_DIRTYDIRECT;
+ tif->tif_flags &= ~TIFF_DIRTYSTRIP;
+ (*tif->tif_cleanup)(tif);
+ /*
+ * Reset directory-related state for subsequent
+ * directories.
+ */
+ TIFFCreateDirectory(tif);
+ }
+ return(1);
+bad:
+ if (dir!=NULL)
+ _TIFFfree(dir);
+ if (dirmem!=NULL)
+ _TIFFfree(dirmem);
+ return(0);
+}
+
+static int
+TIFFWriteDirectoryTagSampleformatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, double* value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagSampleformatArray";
+ void* conv;
+ uint32 i;
+ int ok;
+ conv = _TIFFmalloc(count*sizeof(double));
+ if (conv == NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Out of memory");
+ return (0);
+ }
+
+ switch (tif->tif_dir.td_sampleformat)
+ {
+ case SAMPLEFORMAT_IEEEFP:
+ if (tif->tif_dir.td_bitspersample<=32)
+ {
+ for (i = 0; i < count; ++i)
+ ((float*)conv)[i] = (float)value[i];
+ ok = TIFFWriteDirectoryTagFloatArray(tif,ndir,dir,tag,count,(float*)conv);
+ }
+ else
+ {
+ ok = TIFFWriteDirectoryTagDoubleArray(tif,ndir,dir,tag,count,value);
+ }
+ break;
+ case SAMPLEFORMAT_INT:
+ if (tif->tif_dir.td_bitspersample<=8)
+ {
+ for (i = 0; i < count; ++i)
+ ((int8*)conv)[i] = (int8)value[i];
+ ok = TIFFWriteDirectoryTagSbyteArray(tif,ndir,dir,tag,count,(int8*)conv);
+ }
+ else if (tif->tif_dir.td_bitspersample<=16)
+ {
+ for (i = 0; i < count; ++i)
+ ((int16*)conv)[i] = (int16)value[i];
+ ok = TIFFWriteDirectoryTagSshortArray(tif,ndir,dir,tag,count,(int16*)conv);
+ }
+ else
+ {
+ for (i = 0; i < count; ++i)
+ ((int32*)conv)[i] = (int32)value[i];
+ ok = TIFFWriteDirectoryTagSlongArray(tif,ndir,dir,tag,count,(int32*)conv);
+ }
+ break;
+ case SAMPLEFORMAT_UINT:
+ if (tif->tif_dir.td_bitspersample<=8)
+ {
+ for (i = 0; i < count; ++i)
+ ((uint8*)conv)[i] = (uint8)value[i];
+ ok = TIFFWriteDirectoryTagByteArray(tif,ndir,dir,tag,count,(uint8*)conv);
+ }
+ else if (tif->tif_dir.td_bitspersample<=16)
+ {
+ for (i = 0; i < count; ++i)
+ ((uint16*)conv)[i] = (uint16)value[i];
+ ok = TIFFWriteDirectoryTagShortArray(tif,ndir,dir,tag,count,(uint16*)conv);
+ }
+ else
+ {
+ for (i = 0; i < count; ++i)
+ ((uint32*)conv)[i] = (uint32)value[i];
+ ok = TIFFWriteDirectoryTagLongArray(tif,ndir,dir,tag,count,(uint32*)conv);
+ }
+ break;
+ default:
+ ok = 0;
+ }
+
+ _TIFFfree(conv);
+ return (ok);
+}
+
+#if 0
+static int
+TIFFWriteDirectoryTagSampleformatPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value)
+{
+ switch (tif->tif_dir.td_sampleformat)
+ {
+ case SAMPLEFORMAT_IEEEFP:
+ if (tif->tif_dir.td_bitspersample<=32)
+ return(TIFFWriteDirectoryTagFloatPerSample(tif,ndir,dir,tag,(float)value));
+ else
+ return(TIFFWriteDirectoryTagDoublePerSample(tif,ndir,dir,tag,value));
+ case SAMPLEFORMAT_INT:
+ if (tif->tif_dir.td_bitspersample<=8)
+ return(TIFFWriteDirectoryTagSbytePerSample(tif,ndir,dir,tag,(int8)value));
+ else if (tif->tif_dir.td_bitspersample<=16)
+ return(TIFFWriteDirectoryTagSshortPerSample(tif,ndir,dir,tag,(int16)value));
+ else
+ return(TIFFWriteDirectoryTagSlongPerSample(tif,ndir,dir,tag,(int32)value));
+ case SAMPLEFORMAT_UINT:
+ if (tif->tif_dir.td_bitspersample<=8)
+ return(TIFFWriteDirectoryTagBytePerSample(tif,ndir,dir,tag,(uint8)value));
+ else if (tif->tif_dir.td_bitspersample<=16)
+ return(TIFFWriteDirectoryTagShortPerSample(tif,ndir,dir,tag,(uint16)value));
+ else
+ return(TIFFWriteDirectoryTagLongPerSample(tif,ndir,dir,tag,(uint32)value));
+ default:
+ return(1);
+ }
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagAscii(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, char* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedAscii(tif,ndir,dir,tag,count,value));
+}
+
+static int
+TIFFWriteDirectoryTagUndefinedArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint8* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedUndefinedArray(tif,ndir,dir,tag,count,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagByte(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint8 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedByte(tif,ndir,dir,tag,value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagByteArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint8* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedByteArray(tif,ndir,dir,tag,count,value));
+}
+
+#if 0
+static int
+TIFFWriteDirectoryTagBytePerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint8 value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagBytePerSample";
+ uint8* m;
+ uint8* na;
+ uint16 nb;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=_TIFFmalloc(tif->tif_dir.td_samplesperpixel*sizeof(uint8));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=m, nb=0; nb<tif->tif_dir.td_samplesperpixel; na++, nb++)
+ *na=value;
+ o=TIFFWriteDirectoryTagCheckedByteArray(tif,ndir,dir,tag,tif->tif_dir.td_samplesperpixel,m);
+ _TIFFfree(m);
+ return(o);
+}
+#endif
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagSbyte(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int8 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSbyte(tif,ndir,dir,tag,value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagSbyteArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int8* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSbyteArray(tif,ndir,dir,tag,count,value));
+}
+
+#if 0
+static int
+TIFFWriteDirectoryTagSbytePerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int8 value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagSbytePerSample";
+ int8* m;
+ int8* na;
+ uint16 nb;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=_TIFFmalloc(tif->tif_dir.td_samplesperpixel*sizeof(int8));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=m, nb=0; nb<tif->tif_dir.td_samplesperpixel; na++, nb++)
+ *na=value;
+ o=TIFFWriteDirectoryTagCheckedSbyteArray(tif,ndir,dir,tag,tif->tif_dir.td_samplesperpixel,m);
+ _TIFFfree(m);
+ return(o);
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagShort(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint16 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedShort(tif,ndir,dir,tag,value));
+}
+
+static int
+TIFFWriteDirectoryTagShortArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint16* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedShortArray(tif,ndir,dir,tag,count,value));
+}
+
+static int
+TIFFWriteDirectoryTagShortPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint16 value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagShortPerSample";
+ uint16* m;
+ uint16* na;
+ uint16 nb;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=_TIFFmalloc(tif->tif_dir.td_samplesperpixel*sizeof(uint16));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=m, nb=0; nb<tif->tif_dir.td_samplesperpixel; na++, nb++)
+ *na=value;
+ o=TIFFWriteDirectoryTagCheckedShortArray(tif,ndir,dir,tag,tif->tif_dir.td_samplesperpixel,m);
+ _TIFFfree(m);
+ return(o);
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagSshort(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int16 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSshort(tif,ndir,dir,tag,value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagSshortArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int16* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSshortArray(tif,ndir,dir,tag,count,value));
+}
+
+#if 0
+static int
+TIFFWriteDirectoryTagSshortPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int16 value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagSshortPerSample";
+ int16* m;
+ int16* na;
+ uint16 nb;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=_TIFFmalloc(tif->tif_dir.td_samplesperpixel*sizeof(int16));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=m, nb=0; nb<tif->tif_dir.td_samplesperpixel; na++, nb++)
+ *na=value;
+ o=TIFFWriteDirectoryTagCheckedSshortArray(tif,ndir,dir,tag,tif->tif_dir.td_samplesperpixel,m);
+ _TIFFfree(m);
+ return(o);
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagLong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedLong(tif,ndir,dir,tag,value));
+}
+
+static int
+TIFFWriteDirectoryTagLongArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint32* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedLongArray(tif,ndir,dir,tag,count,value));
+}
+
+#if 0
+static int
+TIFFWriteDirectoryTagLongPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagLongPerSample";
+ uint32* m;
+ uint32* na;
+ uint16 nb;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=_TIFFmalloc(tif->tif_dir.td_samplesperpixel*sizeof(uint32));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=m, nb=0; nb<tif->tif_dir.td_samplesperpixel; na++, nb++)
+ *na=value;
+ o=TIFFWriteDirectoryTagCheckedLongArray(tif,ndir,dir,tag,tif->tif_dir.td_samplesperpixel,m);
+ _TIFFfree(m);
+ return(o);
+}
+#endif
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagSlong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int32 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSlong(tif,ndir,dir,tag,value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagSlongArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int32* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSlongArray(tif,ndir,dir,tag,count,value));
+}
+
+#if 0
+static int
+TIFFWriteDirectoryTagSlongPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int32 value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagSlongPerSample";
+ int32* m;
+ int32* na;
+ uint16 nb;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=_TIFFmalloc(tif->tif_dir.td_samplesperpixel*sizeof(int32));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=m, nb=0; nb<tif->tif_dir.td_samplesperpixel; na++, nb++)
+ *na=value;
+ o=TIFFWriteDirectoryTagCheckedSlongArray(tif,ndir,dir,tag,tif->tif_dir.td_samplesperpixel,m);
+ _TIFFfree(m);
+ return(o);
+}
+#endif
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagLong8(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint64 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedLong8(tif,ndir,dir,tag,value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagLong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedLong8Array(tif,ndir,dir,tag,count,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagSlong8(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int64 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSlong8(tif,ndir,dir,tag,value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagSlong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int64* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSlong8Array(tif,ndir,dir,tag,count,value));
+}
+
+static int
+TIFFWriteDirectoryTagRational(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedRational(tif,ndir,dir,tag,value));
+}
+
+static int
+TIFFWriteDirectoryTagRationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedRationalArray(tif,ndir,dir,tag,count,value));
+}
+
+static int
+TIFFWriteDirectoryTagSrationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedSrationalArray(tif,ndir,dir,tag,count,value));
+}
+
+#ifdef notdef
+static int TIFFWriteDirectoryTagFloat(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, float value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedFloat(tif,ndir,dir,tag,value));
+}
+#endif
+
+static int TIFFWriteDirectoryTagFloatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedFloatArray(tif,ndir,dir,tag,count,value));
+}
+
+#if 0
+static int TIFFWriteDirectoryTagFloatPerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, float value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagFloatPerSample";
+ float* m;
+ float* na;
+ uint16 nb;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=_TIFFmalloc(tif->tif_dir.td_samplesperpixel*sizeof(float));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=m, nb=0; nb<tif->tif_dir.td_samplesperpixel; na++, nb++)
+ *na=value;
+ o=TIFFWriteDirectoryTagCheckedFloatArray(tif,ndir,dir,tag,tif->tif_dir.td_samplesperpixel,m);
+ _TIFFfree(m);
+ return(o);
+}
+#endif
+
+#ifdef notdef
+static int TIFFWriteDirectoryTagDouble(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedDouble(tif,ndir,dir,tag,value));
+}
+#endif
+
+static int TIFFWriteDirectoryTagDoubleArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, double* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedDoubleArray(tif,ndir,dir,tag,count,value));
+}
+
+#if 0
+static int TIFFWriteDirectoryTagDoublePerSample(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagDoublePerSample";
+ double* m;
+ double* na;
+ uint16 nb;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=_TIFFmalloc(tif->tif_dir.td_samplesperpixel*sizeof(double));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=m, nb=0; nb<tif->tif_dir.td_samplesperpixel; na++, nb++)
+ *na=value;
+ o=TIFFWriteDirectoryTagCheckedDoubleArray(tif,ndir,dir,tag,tif->tif_dir.td_samplesperpixel,m);
+ _TIFFfree(m);
+ return(o);
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagIfdArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint32* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedIfdArray(tif,ndir,dir,tag,count,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagIfd8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ return(TIFFWriteDirectoryTagCheckedIfd8Array(tif,ndir,dir,tag,count,value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagShortLong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 value)
+{
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ if (value<=0xFFFF)
+ return(TIFFWriteDirectoryTagCheckedShort(tif,ndir,dir,tag,(uint16)value));
+ else
+ return(TIFFWriteDirectoryTagCheckedLong(tif,ndir,dir,tag,value));
+}
+
+/************************************************************************/
+/* TIFFWriteDirectoryTagLongLong8Array() */
+/* */
+/* Write out LONG8 array as LONG8 for BigTIFF or LONG for */
+/* Classic TIFF with some checking. */
+/************************************************************************/
+
+static int
+TIFFWriteDirectoryTagLongLong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagLongLong8Array";
+ uint64* ma;
+ uint32 mb;
+ uint32* p;
+ uint32* q;
+ int o;
+
+ /* is this just a counting pass? */
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+
+ /* We always write LONG8 for BigTIFF, no checking needed. */
+ if( tif->tif_flags&TIFF_BIGTIFF )
+ return TIFFWriteDirectoryTagCheckedLong8Array(tif,ndir,dir,
+ tag,count,value);
+
+ /*
+ ** For classic tiff we want to verify everything is in range for LONG
+ ** and convert to long format.
+ */
+
+ p = _TIFFmalloc(count*sizeof(uint32));
+ if (p==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+
+ for (q=p, ma=value, mb=0; mb<count; ma++, mb++, q++)
+ {
+ if (*ma>0xFFFFFFFF)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Attempt to write value larger than 0xFFFFFFFF in Classic TIFF file.");
+ _TIFFfree(p);
+ return(0);
+ }
+ *q= (uint32)(*ma);
+ }
+
+ o=TIFFWriteDirectoryTagCheckedLongArray(tif,ndir,dir,tag,count,p);
+ _TIFFfree(p);
+
+ return(o);
+}
+
+/************************************************************************/
+/* TIFFWriteDirectoryTagIfdIfd8Array() */
+/* */
+/* Write either IFD8 or IFD array depending on file type. */
+/************************************************************************/
+
+static int
+TIFFWriteDirectoryTagIfdIfd8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagIfdIfd8Array";
+ uint64* ma;
+ uint32 mb;
+ uint32* p;
+ uint32* q;
+ int o;
+
+ /* is this just a counting pass? */
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+
+ /* We always write IFD8 for BigTIFF, no checking needed. */
+ if( tif->tif_flags&TIFF_BIGTIFF )
+ return TIFFWriteDirectoryTagCheckedIfd8Array(tif,ndir,dir,
+ tag,count,value);
+
+ /*
+ ** For classic tiff we want to verify everything is in range for IFD
+ ** and convert to long format.
+ */
+
+ p = _TIFFmalloc(count*sizeof(uint32));
+ if (p==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+
+ for (q=p, ma=value, mb=0; mb<count; ma++, mb++, q++)
+ {
+ if (*ma>0xFFFFFFFF)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Attempt to write value larger than 0xFFFFFFFF in Classic TIFF file.");
+ _TIFFfree(p);
+ return(0);
+ }
+ *q= (uint32)(*ma);
+ }
+
+ o=TIFFWriteDirectoryTagCheckedIfdArray(tif,ndir,dir,tag,count,p);
+ _TIFFfree(p);
+
+ return(o);
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagShortLongLong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagShortLongLong8Array";
+ uint64* ma;
+ uint32 mb;
+ uint8 n;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ n=0;
+ for (ma=value, mb=0; mb<count; ma++, mb++)
+ {
+ if ((n==0)&&(*ma>0xFFFF))
+ n=1;
+ if ((n==1)&&(*ma>0xFFFFFFFF))
+ {
+ n=2;
+ break;
+ }
+ }
+ if (n==0)
+ {
+ uint16* p;
+ uint16* q;
+ p=_TIFFmalloc(count*sizeof(uint16));
+ if (p==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (ma=value, mb=0, q=p; mb<count; ma++, mb++, q++)
+ *q=(uint16)(*ma);
+ o=TIFFWriteDirectoryTagCheckedShortArray(tif,ndir,dir,tag,count,p);
+ _TIFFfree(p);
+ }
+ else if (n==1)
+ {
+ uint32* p;
+ uint32* q;
+ p=_TIFFmalloc(count*sizeof(uint32));
+ if (p==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (ma=value, mb=0, q=p; mb<count; ma++, mb++, q++)
+ *q=(uint32)(*ma);
+ o=TIFFWriteDirectoryTagCheckedLongArray(tif,ndir,dir,tag,count,p);
+ _TIFFfree(p);
+ }
+ else
+ {
+ assert(n==2);
+ o=TIFFWriteDirectoryTagCheckedLong8Array(tif,ndir,dir,tag,count,value);
+ }
+ return(o);
+}
+#endif
+static int
+TIFFWriteDirectoryTagColormap(TIFF* tif, uint32* ndir, TIFFDirEntry* dir)
+{
+ static const char module[] = "TIFFWriteDirectoryTagColormap";
+ uint32 m;
+ uint16* n;
+ int o;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=(1<<tif->tif_dir.td_bitspersample);
+ n=_TIFFmalloc(3*m*sizeof(uint16));
+ if (n==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ _TIFFmemcpy(&n[0],tif->tif_dir.td_colormap[0],m*sizeof(uint16));
+ _TIFFmemcpy(&n[m],tif->tif_dir.td_colormap[1],m*sizeof(uint16));
+ _TIFFmemcpy(&n[2*m],tif->tif_dir.td_colormap[2],m*sizeof(uint16));
+ o=TIFFWriteDirectoryTagCheckedShortArray(tif,ndir,dir,TIFFTAG_COLORMAP,3*m,n);
+ _TIFFfree(n);
+ return(o);
+}
+
+static int
+TIFFWriteDirectoryTagTransferfunction(TIFF* tif, uint32* ndir, TIFFDirEntry* dir)
+{
+ static const char module[] = "TIFFWriteDirectoryTagTransferfunction";
+ uint32 m;
+ uint16 n;
+ uint16* o;
+ int p;
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=(1<<tif->tif_dir.td_bitspersample);
+ n=tif->tif_dir.td_samplesperpixel-tif->tif_dir.td_extrasamples;
+ /*
+ * Check if the table can be written as a single column,
+ * or if it must be written as 3 columns. Note that we
+ * write a 3-column tag if there are 2 samples/pixel and
+ * a single column of data won't suffice--hmm.
+ */
+ if (n>3)
+ n=3;
+ if (n==3)
+ {
+ if (!_TIFFmemcmp(tif->tif_dir.td_transferfunction[0],tif->tif_dir.td_transferfunction[2],m*sizeof(uint16)))
+ n=2;
+ }
+ if (n==2)
+ {
+ if (!_TIFFmemcmp(tif->tif_dir.td_transferfunction[0],tif->tif_dir.td_transferfunction[1],m*sizeof(uint16)))
+ n=1;
+ }
+ if (n==0)
+ n=1;
+ o=_TIFFmalloc(n*m*sizeof(uint16));
+ if (o==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ _TIFFmemcpy(&o[0],tif->tif_dir.td_transferfunction[0],m*sizeof(uint16));
+ if (n>1)
+ _TIFFmemcpy(&o[m],tif->tif_dir.td_transferfunction[1],m*sizeof(uint16));
+ if (n>2)
+ _TIFFmemcpy(&o[2*m],tif->tif_dir.td_transferfunction[2],m*sizeof(uint16));
+ p=TIFFWriteDirectoryTagCheckedShortArray(tif,ndir,dir,TIFFTAG_TRANSFERFUNCTION,n*m,o);
+ _TIFFfree(o);
+ return(p);
+}
+
+static int
+TIFFWriteDirectoryTagSubifd(TIFF* tif, uint32* ndir, TIFFDirEntry* dir)
+{
+ static const char module[] = "TIFFWriteDirectoryTagSubifd";
+ uint64 m;
+ int n;
+ if (tif->tif_dir.td_nsubifd==0)
+ return(1);
+ if (dir==NULL)
+ {
+ (*ndir)++;
+ return(1);
+ }
+ m=tif->tif_dataoff;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32* o;
+ uint64* pa;
+ uint32* pb;
+ uint16 p;
+ o=_TIFFmalloc(tif->tif_dir.td_nsubifd*sizeof(uint32));
+ if (o==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ pa=tif->tif_dir.td_subifd;
+ pb=o;
+ for (p=0; p < tif->tif_dir.td_nsubifd; p++)
+ {
+ assert(pa != 0);
+ assert(*pa <= 0xFFFFFFFFUL);
+ *pb++=(uint32)(*pa++);
+ }
+ n=TIFFWriteDirectoryTagCheckedIfdArray(tif,ndir,dir,TIFFTAG_SUBIFD,tif->tif_dir.td_nsubifd,o);
+ _TIFFfree(o);
+ }
+ else
+ n=TIFFWriteDirectoryTagCheckedIfd8Array(tif,ndir,dir,TIFFTAG_SUBIFD,tif->tif_dir.td_nsubifd,tif->tif_dir.td_subifd);
+ if (!n)
+ return(0);
+ /*
+ * Total hack: if this directory includes a SubIFD
+ * tag then force the next <n> directories to be
+ * written as ``sub directories'' of this one. This
+ * is used to write things like thumbnails and
+ * image masks that one wants to keep out of the
+ * normal directory linkage access mechanism.
+ */
+ tif->tif_flags|=TIFF_INSUBIFD;
+ tif->tif_nsubifd=tif->tif_dir.td_nsubifd;
+ if (tif->tif_dir.td_nsubifd==1)
+ tif->tif_subifdoff=0;
+ else
+ tif->tif_subifdoff=m;
+ return(1);
+}
+
+static int
+TIFFWriteDirectoryTagCheckedAscii(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, char* value)
+{
+ assert(sizeof(char)==1);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_ASCII,count,count,value));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedUndefinedArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint8* value)
+{
+ assert(sizeof(uint8)==1);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_UNDEFINED,count,count,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagCheckedByte(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint8 value)
+{
+ assert(sizeof(uint8)==1);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_BYTE,1,1,&value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagCheckedByteArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint8* value)
+{
+ assert(sizeof(uint8)==1);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_BYTE,count,count,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagCheckedSbyte(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int8 value)
+{
+ assert(sizeof(int8)==1);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SBYTE,1,1,&value));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagCheckedSbyteArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int8* value)
+{
+ assert(sizeof(int8)==1);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SBYTE,count,count,value));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedShort(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint16 value)
+{
+ uint16 m;
+ assert(sizeof(uint16)==2);
+ m=value;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(&m);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SHORT,1,2,&m));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedShortArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint16* value)
+{
+ assert(count<0x80000000);
+ assert(sizeof(uint16)==2);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfShort(value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SHORT,count,count*2,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagCheckedSshort(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int16 value)
+{
+ int16 m;
+ assert(sizeof(int16)==2);
+ m=value;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort((uint16*)(&m));
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SSHORT,1,2,&m));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagCheckedSshortArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int16* value)
+{
+ assert(count<0x80000000);
+ assert(sizeof(int16)==2);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfShort((uint16*)value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SSHORT,count,count*2,value));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedLong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 value)
+{
+ uint32 m;
+ assert(sizeof(uint32)==4);
+ m=value;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&m);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_LONG,1,4,&m));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedLongArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint32* value)
+{
+ assert(count<0x40000000);
+ assert(sizeof(uint32)==4);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong(value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_LONG,count,count*4,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagCheckedSlong(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int32 value)
+{
+ int32 m;
+ assert(sizeof(int32)==4);
+ m=value;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong((uint32*)(&m));
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SLONG,1,4,&m));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagCheckedSlongArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int32* value)
+{
+ assert(count<0x40000000);
+ assert(sizeof(int32)==4);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong((uint32*)value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SLONG,count,count*4,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagCheckedLong8(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint64 value)
+{
+ uint64 m;
+ assert(sizeof(uint64)==8);
+ assert(tif->tif_flags&TIFF_BIGTIFF);
+ m=value;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(&m);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_LONG8,1,8,&m));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagCheckedLong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value)
+{
+ assert(count<0x20000000);
+ assert(sizeof(uint64)==8);
+ assert(tif->tif_flags&TIFF_BIGTIFF);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong8(value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_LONG8,count,count*8,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagCheckedSlong8(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, int64 value)
+{
+ int64 m;
+ assert(sizeof(int64)==8);
+ assert(tif->tif_flags&TIFF_BIGTIFF);
+ m=value;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8((uint64*)(&m));
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SLONG8,1,8,&m));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagCheckedSlong8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, int64* value)
+{
+ assert(count<0x20000000);
+ assert(sizeof(int64)==8);
+ assert(tif->tif_flags&TIFF_BIGTIFF);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong8((uint64*)value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SLONG8,count,count*8,value));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedRational(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value)
+{
+ uint32 m[2];
+ assert(value>=0.0);
+ assert(sizeof(uint32)==4);
+ if (value<=0.0)
+ {
+ m[0]=0;
+ m[1]=1;
+ }
+ else if (value==(double)(uint32)value)
+ {
+ m[0]=(uint32)value;
+ m[1]=1;
+ }
+ else if (value<1.0)
+ {
+ m[0]=(uint32)(value*0xFFFFFFFF);
+ m[1]=0xFFFFFFFF;
+ }
+ else
+ {
+ m[0]=0xFFFFFFFF;
+ m[1]=(uint32)(0xFFFFFFFF/value);
+ }
+ if (tif->tif_flags&TIFF_SWAB)
+ {
+ TIFFSwabLong(&m[0]);
+ TIFFSwabLong(&m[1]);
+ }
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_RATIONAL,1,8,&m[0]));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedRationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagCheckedRationalArray";
+ uint32* m;
+ float* na;
+ uint32* nb;
+ uint32 nc;
+ int o;
+ assert(sizeof(uint32)==4);
+ m=_TIFFmalloc(count*2*sizeof(uint32));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=value, nb=m, nc=0; nc<count; na++, nb+=2, nc++)
+ {
+ if (*na<=0.0)
+ {
+ nb[0]=0;
+ nb[1]=1;
+ }
+ else if (*na==(float)(uint32)(*na))
+ {
+ nb[0]=(uint32)(*na);
+ nb[1]=1;
+ }
+ else if (*na<1.0)
+ {
+ nb[0]=(uint32)((*na)*0xFFFFFFFF);
+ nb[1]=0xFFFFFFFF;
+ }
+ else
+ {
+ nb[0]=0xFFFFFFFF;
+ nb[1]=(uint32)(0xFFFFFFFF/(*na));
+ }
+ }
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong(m,count*2);
+ o=TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_RATIONAL,count,count*8,&m[0]);
+ _TIFFfree(m);
+ return(o);
+}
+
+static int
+TIFFWriteDirectoryTagCheckedSrationalArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value)
+{
+ static const char module[] = "TIFFWriteDirectoryTagCheckedSrationalArray";
+ int32* m;
+ float* na;
+ int32* nb;
+ uint32 nc;
+ int o;
+ assert(sizeof(int32)==4);
+ m=_TIFFmalloc(count*2*sizeof(int32));
+ if (m==NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ for (na=value, nb=m, nc=0; nc<count; na++, nb+=2, nc++)
+ {
+ if (*na<0.0)
+ {
+ if (*na==(int32)(*na))
+ {
+ nb[0]=(int32)(*na);
+ nb[1]=1;
+ }
+ else if (*na>-1.0)
+ {
+ nb[0]=-(int32)((-*na)*0x7FFFFFFF);
+ nb[1]=0x7FFFFFFF;
+ }
+ else
+ {
+ nb[0]=-0x7FFFFFFF;
+ nb[1]=(int32)(0x7FFFFFFF/(-*na));
+ }
+ }
+ else
+ {
+ if (*na==(int32)(*na))
+ {
+ nb[0]=(int32)(*na);
+ nb[1]=1;
+ }
+ else if (*na<1.0)
+ {
+ nb[0]=(int32)((*na)*0x7FFFFFFF);
+ nb[1]=0x7FFFFFFF;
+ }
+ else
+ {
+ nb[0]=0x7FFFFFFF;
+ nb[1]=(int32)(0x7FFFFFFF/(*na));
+ }
+ }
+ }
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong((uint32*)m,count*2);
+ o=TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_SRATIONAL,count,count*8,&m[0]);
+ _TIFFfree(m);
+ return(o);
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagCheckedFloat(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, float value)
+{
+ float m;
+ assert(sizeof(float)==4);
+ m=value;
+ TIFFCvtNativeToIEEEFloat(tif,1,&m);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabFloat(&m);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_FLOAT,1,4,&m));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagCheckedFloatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, float* value)
+{
+ assert(count<0x40000000);
+ assert(sizeof(float)==4);
+ TIFFCvtNativeToIEEEFloat(tif,count,&value);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfFloat(value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_FLOAT,count,count*4,value));
+}
+
+#ifdef notdef
+static int
+TIFFWriteDirectoryTagCheckedDouble(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, double value)
+{
+ double m;
+ assert(sizeof(double)==8);
+ m=value;
+ TIFFCvtNativeToIEEEDouble(tif,1,&m);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabDouble(&m);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_DOUBLE,1,8,&m));
+}
+#endif
+
+static int
+TIFFWriteDirectoryTagCheckedDoubleArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, double* value)
+{
+ assert(count<0x20000000);
+ assert(sizeof(double)==8);
+ TIFFCvtNativeToIEEEDouble(tif,count,&value);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfDouble(value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_DOUBLE,count,count*8,value));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedIfdArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint32* value)
+{
+ assert(count<0x40000000);
+ assert(sizeof(uint32)==4);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong(value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_IFD,count,count*4,value));
+}
+
+static int
+TIFFWriteDirectoryTagCheckedIfd8Array(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, uint64* value)
+{
+ assert(count<0x20000000);
+ assert(sizeof(uint64)==8);
+ assert(tif->tif_flags&TIFF_BIGTIFF);
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabArrayOfLong8(value,count);
+ return(TIFFWriteDirectoryTagData(tif,ndir,dir,tag,TIFF_IFD8,count,count*8,value));
+}
+
+static int
+TIFFWriteDirectoryTagData(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint16 datatype, uint32 count, uint32 datalength, void* data)
+{
+ static const char module[] = "TIFFWriteDirectoryTagData";
+ uint32 m;
+ m=0;
+ while (m<(*ndir))
+ {
+ assert(dir[m].tdir_tag!=tag);
+ if (dir[m].tdir_tag>tag)
+ break;
+ m++;
+ }
+ if (m<(*ndir))
+ {
+ uint32 n;
+ for (n=*ndir; n>m; n--)
+ dir[n]=dir[n-1];
+ }
+ dir[m].tdir_tag=tag;
+ dir[m].tdir_type=datatype;
+ dir[m].tdir_count=count;
+ dir[m].tdir_offset.toff_long8 = 0;
+ if (datalength<=((tif->tif_flags&TIFF_BIGTIFF)?0x8U:0x4U))
+ _TIFFmemcpy(&dir[m].tdir_offset,data,datalength);
+ else
+ {
+ uint64 na,nb;
+ na=tif->tif_dataoff;
+ nb=na+datalength;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ nb=(uint32)nb;
+ if ((nb<na)||(nb<datalength))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Maximum TIFF file size exceeded");
+ return(0);
+ }
+ if (!SeekOK(tif,na))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"IO error writing tag data");
+ return(0);
+ }
+ assert(datalength<0x80000000UL);
+ if (!WriteOK(tif,data,(tmsize_t)datalength))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"IO error writing tag data");
+ return(0);
+ }
+ tif->tif_dataoff=nb;
+ if (tif->tif_dataoff&1)
+ tif->tif_dataoff++;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 o;
+ o=(uint32)na;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&o);
+ _TIFFmemcpy(&dir[m].tdir_offset,&o,4);
+ }
+ else
+ {
+ dir[m].tdir_offset.toff_long8 = na;
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(&dir[m].tdir_offset.toff_long8);
+ }
+ }
+ (*ndir)++;
+ return(1);
+}
+
+/*
+ * Link the current directory into the directory chain for the file.
+ */
+static int
+TIFFLinkDirectory(TIFF* tif)
+{
+ static const char module[] = "TIFFLinkDirectory";
+
+ tif->tif_diroff = (TIFFSeekFile(tif,0,SEEK_END)+1) &~ 1;
+
+ /*
+ * Handle SubIFDs
+ */
+ if (tif->tif_flags & TIFF_INSUBIFD)
+ {
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 m;
+ m = (uint32)tif->tif_diroff;
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&m);
+ (void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
+ if (!WriteOK(tif, &m, 4)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing SubIFD directory link");
+ return (0);
+ }
+ /*
+ * Advance to the next SubIFD or, if this is
+ * the last one configured, revert back to the
+ * normal directory linkage.
+ */
+ if (--tif->tif_nsubifd)
+ tif->tif_subifdoff += 4;
+ else
+ tif->tif_flags &= ~TIFF_INSUBIFD;
+ return (1);
+ }
+ else
+ {
+ uint64 m;
+ m = tif->tif_diroff;
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&m);
+ (void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
+ if (!WriteOK(tif, &m, 8)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing SubIFD directory link");
+ return (0);
+ }
+ /*
+ * Advance to the next SubIFD or, if this is
+ * the last one configured, revert back to the
+ * normal directory linkage.
+ */
+ if (--tif->tif_nsubifd)
+ tif->tif_subifdoff += 8;
+ else
+ tif->tif_flags &= ~TIFF_INSUBIFD;
+ return (1);
+ }
+ }
+
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 m;
+ uint32 nextdir;
+ m = (uint32)(tif->tif_diroff);
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&m);
+ if (tif->tif_header.classic.tiff_diroff == 0) {
+ /*
+ * First directory, overwrite offset in header.
+ */
+ tif->tif_header.classic.tiff_diroff = (uint32) tif->tif_diroff;
+ (void) TIFFSeekFile(tif,4, SEEK_SET);
+ if (!WriteOK(tif, &m, 4)) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing TIFF header");
+ return (0);
+ }
+ return (1);
+ }
+ /*
+ * Not the first directory, search to the last and append.
+ */
+ nextdir = tif->tif_header.classic.tiff_diroff;
+ while(1) {
+ uint16 dircount;
+ uint32 nextnextdir;
+
+ if (!SeekOK(tif, nextdir) ||
+ !ReadOK(tif, &dircount, 2)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory count");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&dircount);
+ (void) TIFFSeekFile(tif,
+ nextdir+2+dircount*12, SEEK_SET);
+ if (!ReadOK(tif, &nextnextdir, 4)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory link");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&nextnextdir);
+ if (nextnextdir==0)
+ {
+ (void) TIFFSeekFile(tif,
+ nextdir+2+dircount*12, SEEK_SET);
+ if (!WriteOK(tif, &m, 4)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing directory link");
+ return (0);
+ }
+ break;
+ }
+ nextdir=nextnextdir;
+ }
+ }
+ else
+ {
+ uint64 m;
+ uint64 nextdir;
+ m = tif->tif_diroff;
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&m);
+ if (tif->tif_header.big.tiff_diroff == 0) {
+ /*
+ * First directory, overwrite offset in header.
+ */
+ tif->tif_header.big.tiff_diroff = tif->tif_diroff;
+ (void) TIFFSeekFile(tif,8, SEEK_SET);
+ if (!WriteOK(tif, &m, 8)) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing TIFF header");
+ return (0);
+ }
+ return (1);
+ }
+ /*
+ * Not the first directory, search to the last and append.
+ */
+ nextdir = tif->tif_header.big.tiff_diroff;
+ while(1) {
+ uint64 dircount64;
+ uint16 dircount;
+ uint64 nextnextdir;
+
+ if (!SeekOK(tif, nextdir) ||
+ !ReadOK(tif, &dircount64, 8)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory count");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ if (dircount64>0xFFFF)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Sanity check on tag count failed, likely corrupt TIFF");
+ return (0);
+ }
+ dircount=(uint16)dircount64;
+ (void) TIFFSeekFile(tif,
+ nextdir+8+dircount*20, SEEK_SET);
+ if (!ReadOK(tif, &nextnextdir, 8)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory link");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&nextnextdir);
+ if (nextnextdir==0)
+ {
+ (void) TIFFSeekFile(tif,
+ nextdir+8+dircount*20, SEEK_SET);
+ if (!WriteOK(tif, &m, 8)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing directory link");
+ return (0);
+ }
+ break;
+ }
+ nextdir=nextnextdir;
+ }
+ }
+ return (1);
+}
+
+/************************************************************************/
+/* TIFFRewriteField() */
+/* */
+/* Rewrite a field in the directory on disk without regard to */
+/* updating the TIFF directory structure in memory. Currently */
+/* only supported for field that already exist in the on-disk */
+/* directory. Mainly used for updating stripoffset / */
+/* stripbytecount values after the directory is already on */
+/* disk. */
+/* */
+/* Returns zero on failure, and one on success. */
+/************************************************************************/
+
+int
+_TIFFRewriteField(TIFF* tif, uint16 tag, TIFFDataType in_datatype,
+ tmsize_t count, void* data)
+{
+ static const char module[] = "TIFFResetField";
+ /* const TIFFField* fip = NULL; */
+ uint16 dircount;
+ tmsize_t dirsize;
+ uint8 direntry_raw[20];
+ uint16 entry_tag = 0;
+ uint16 entry_type = 0;
+ uint64 entry_count = 0;
+ uint64 entry_offset = 0;
+ int value_in_entry = 0;
+ uint64 read_offset;
+ uint8 *buf_to_write = NULL;
+ TIFFDataType datatype;
+
+/* -------------------------------------------------------------------- */
+/* Find field definition. */
+/* -------------------------------------------------------------------- */
+ /*fip =*/ TIFFFindField(tif, tag, TIFF_ANY);
+
+/* -------------------------------------------------------------------- */
+/* Do some checking this is a straight forward case. */
+/* -------------------------------------------------------------------- */
+ if( isMapped(tif) )
+ {
+ TIFFErrorExt( tif->tif_clientdata, module,
+ "Memory mapped files not currently supported for this operation." );
+ return 0;
+ }
+
+ if( tif->tif_diroff == 0 )
+ {
+ TIFFErrorExt( tif->tif_clientdata, module,
+ "Attempt to reset field on directory not already on disk." );
+ return 0;
+ }
+
+/* -------------------------------------------------------------------- */
+/* Read the directory entry count. */
+/* -------------------------------------------------------------------- */
+ if (!SeekOK(tif, tif->tif_diroff)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Seek error accessing TIFF directory",
+ tif->tif_name);
+ return 0;
+ }
+
+ read_offset = tif->tif_diroff;
+
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ if (!ReadOK(tif, &dircount, sizeof (uint16))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Can not read TIFF directory count",
+ tif->tif_name);
+ return 0;
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&dircount);
+ dirsize = 12;
+ read_offset += 2;
+ } else {
+ uint64 dircount64;
+ if (!ReadOK(tif, &dircount64, sizeof (uint64))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Can not read TIFF directory count",
+ tif->tif_name);
+ return 0;
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ dircount = (uint16)dircount64;
+ dirsize = 20;
+ read_offset += 8;
+ }
+
+/* -------------------------------------------------------------------- */
+/* Read through directory to find target tag. */
+/* -------------------------------------------------------------------- */
+ while( dircount > 0 )
+ {
+ if (!ReadOK(tif, direntry_raw, dirsize)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Can not read TIFF directory entry.",
+ tif->tif_name);
+ return 0;
+ }
+
+ memcpy( &entry_tag, direntry_raw + 0, sizeof(uint16) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort( &entry_tag );
+
+ if( entry_tag == tag )
+ break;
+
+ read_offset += dirsize;
+ }
+
+ if( entry_tag != tag )
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Could not find tag %d.",
+ tif->tif_name, tag );
+ return 0;
+ }
+
+/* -------------------------------------------------------------------- */
+/* Extract the type, count and offset for this entry. */
+/* -------------------------------------------------------------------- */
+ memcpy( &entry_type, direntry_raw + 2, sizeof(uint16) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort( &entry_type );
+
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 value;
+
+ memcpy( &value, direntry_raw + 4, sizeof(uint32) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong( &value );
+ entry_count = value;
+
+ memcpy( &value, direntry_raw + 8, sizeof(uint32) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong( &value );
+ entry_offset = value;
+ }
+ else
+ {
+ memcpy( &entry_count, direntry_raw + 4, sizeof(uint64) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8( &entry_count );
+
+ memcpy( &entry_offset, direntry_raw + 12, sizeof(uint64) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8( &entry_offset );
+ }
+
+/* -------------------------------------------------------------------- */
+/* What data type do we want to write this as? */
+/* -------------------------------------------------------------------- */
+ if( TIFFDataWidth(in_datatype) == 8 && !(tif->tif_flags&TIFF_BIGTIFF) )
+ {
+ if( in_datatype == TIFF_LONG8 )
+ datatype = TIFF_LONG;
+ else if( in_datatype == TIFF_SLONG8 )
+ datatype = TIFF_SLONG;
+ else if( in_datatype == TIFF_IFD8 )
+ datatype = TIFF_IFD;
+ else
+ datatype = in_datatype;
+ }
+ else
+ datatype = in_datatype;
+
+/* -------------------------------------------------------------------- */
+/* Prepare buffer of actual data to write. This includes */
+/* swabbing as needed. */
+/* -------------------------------------------------------------------- */
+ buf_to_write =
+ (uint8 *)_TIFFCheckMalloc(tif, count, TIFFDataWidth(datatype),
+ "for field buffer.");
+ if (!buf_to_write)
+ return 0;
+
+ if( datatype == in_datatype )
+ memcpy( buf_to_write, data, count * TIFFDataWidth(datatype) );
+ else if( datatype == TIFF_SLONG && in_datatype == TIFF_SLONG8 )
+ {
+ tmsize_t i;
+
+ for( i = 0; i < count; i++ )
+ {
+ ((int32 *) buf_to_write)[i] =
+ (int32) ((int64 *) data)[i];
+ if( (int64) ((int32 *) buf_to_write)[i] != ((int64 *) data)[i] )
+ {
+ _TIFFfree( buf_to_write );
+ TIFFErrorExt( tif->tif_clientdata, module,
+ "Value exceeds 32bit range of output type." );
+ return 0;
+ }
+ }
+ }
+ else if( (datatype == TIFF_LONG && in_datatype == TIFF_LONG8)
+ || (datatype == TIFF_IFD && in_datatype == TIFF_IFD8) )
+ {
+ tmsize_t i;
+
+ for( i = 0; i < count; i++ )
+ {
+ ((uint32 *) buf_to_write)[i] =
+ (uint32) ((uint64 *) data)[i];
+ if( (uint64) ((uint32 *) buf_to_write)[i] != ((uint64 *) data)[i] )
+ {
+ _TIFFfree( buf_to_write );
+ TIFFErrorExt( tif->tif_clientdata, module,
+ "Value exceeds 32bit range of output type." );
+ return 0;
+ }
+ }
+ }
+
+ if( TIFFDataWidth(datatype) > 1 && (tif->tif_flags&TIFF_SWAB) )
+ {
+ if( TIFFDataWidth(datatype) == 2 )
+ TIFFSwabArrayOfShort( (uint16 *) buf_to_write, count );
+ else if( TIFFDataWidth(datatype) == 4 )
+ TIFFSwabArrayOfLong( (uint32 *) buf_to_write, count );
+ else if( TIFFDataWidth(datatype) == 8 )
+ TIFFSwabArrayOfLong8( (uint64 *) buf_to_write, count );
+ }
+
+/* -------------------------------------------------------------------- */
+/* Is this a value that fits into the directory entry? */
+/* -------------------------------------------------------------------- */
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ if( TIFFDataWidth(datatype) * count <= 4 )
+ {
+ entry_offset = read_offset + 8;
+ value_in_entry = 1;
+ }
+ }
+ else
+ {
+ if( TIFFDataWidth(datatype) * count <= 8 )
+ {
+ entry_offset = read_offset + 12;
+ value_in_entry = 1;
+ }
+ }
+
+/* -------------------------------------------------------------------- */
+/* If the tag type, and count match, then we just write it out */
+/* over the old values without altering the directory entry at */
+/* all. */
+/* -------------------------------------------------------------------- */
+ if( entry_count == (uint64)count && entry_type == (uint16) datatype )
+ {
+ if (!SeekOK(tif, entry_offset)) {
+ _TIFFfree( buf_to_write );
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Seek error accessing TIFF directory",
+ tif->tif_name);
+ return 0;
+ }
+ if (!WriteOK(tif, buf_to_write, count*TIFFDataWidth(datatype))) {
+ _TIFFfree( buf_to_write );
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing directory link");
+ return (0);
+ }
+
+ _TIFFfree( buf_to_write );
+ return 1;
+ }
+
+/* -------------------------------------------------------------------- */
+/* Otherwise, we write the new tag data at the end of the file. */
+/* -------------------------------------------------------------------- */
+ if( !value_in_entry )
+ {
+ entry_offset = TIFFSeekFile(tif,0,SEEK_END);
+
+ if (!WriteOK(tif, buf_to_write, count*TIFFDataWidth(datatype))) {
+ _TIFFfree( buf_to_write );
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing directory link");
+ return (0);
+ }
+
+ _TIFFfree( buf_to_write );
+ }
+ else
+ {
+ memcpy( &entry_offset, buf_to_write, count*TIFFDataWidth(datatype));
+ }
+
+/* -------------------------------------------------------------------- */
+/* Adjust the directory entry. */
+/* -------------------------------------------------------------------- */
+ entry_type = datatype;
+ memcpy( direntry_raw + 2, &entry_type, sizeof(uint16) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort( (uint16 *) (direntry_raw + 2) );
+
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint32 value;
+
+ value = (uint32) entry_count;
+ memcpy( direntry_raw + 4, &value, sizeof(uint32) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong( (uint32 *) (direntry_raw + 4) );
+
+ value = (uint32) entry_offset;
+ memcpy( direntry_raw + 8, &value, sizeof(uint32) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong( (uint32 *) (direntry_raw + 8) );
+ }
+ else
+ {
+ memcpy( direntry_raw + 4, &entry_count, sizeof(uint64) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8( (uint64 *) (direntry_raw + 4) );
+
+ memcpy( direntry_raw + 12, &entry_offset, sizeof(uint64) );
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8( (uint64 *) (direntry_raw + 12) );
+ }
+
+/* -------------------------------------------------------------------- */
+/* Write the directory entry out to disk. */
+/* -------------------------------------------------------------------- */
+ if (!SeekOK(tif, read_offset )) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Seek error accessing TIFF directory",
+ tif->tif_name);
+ return 0;
+ }
+
+ if (!WriteOK(tif, direntry_raw,dirsize))
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Can not write TIFF directory entry.",
+ tif->tif_name);
+ return 0;
+ }
+
+ return 1;
+}
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_dumpmode.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dumpmode.c
new file mode 100644
index 0000000..78ab03f
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_dumpmode.c
@@ -0,0 +1,146 @@
+/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dumpmode.c,v 1.14 2011-04-02 20:54:09 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * "Null" Compression Algorithm Support.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+static int
+DumpFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
+
+/*
+ * Encode a hunk of pixels.
+ */
+static int
+DumpModeEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s)
+{
+ (void) s;
+ while (cc > 0) {
+ tmsize_t n;
+
+ n = cc;
+ if (tif->tif_rawcc + n > tif->tif_rawdatasize)
+ n = tif->tif_rawdatasize - tif->tif_rawcc;
+
+ assert( n > 0 );
+
+ /*
+ * Avoid copy if client has setup raw
+ * data buffer to avoid extra copy.
+ */
+ if (tif->tif_rawcp != pp)
+ _TIFFmemcpy(tif->tif_rawcp, pp, n);
+ tif->tif_rawcp += n;
+ tif->tif_rawcc += n;
+ pp += n;
+ cc -= n;
+ if (tif->tif_rawcc >= tif->tif_rawdatasize &&
+ !TIFFFlushData1(tif))
+ return (-1);
+ }
+ return (1);
+}
+
+/*
+ * Decode a hunk of pixels.
+ */
+static int
+DumpModeDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+{
+ static const char module[] = "DumpModeDecode";
+ (void) s;
+ if (tif->tif_rawcc < cc) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+"Not enough data for scanline %lu, expected a request for at most %I64d bytes, got a request for %I64d bytes",
+ (unsigned long) tif->tif_row,
+ (signed __int64) tif->tif_rawcc,
+ (signed __int64) cc);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+"Not enough data for scanline %lu, expected a request for at most %lld bytes, got a request for %lld bytes",
+ (unsigned long) tif->tif_row,
+ (signed long long) tif->tif_rawcc,
+ (signed long long) cc);
+#endif
+ return (0);
+ }
+ /*
+ * Avoid copy if client has setup raw
+ * data buffer to avoid extra copy.
+ */
+ if (tif->tif_rawcp != buf)
+ _TIFFmemcpy(buf, tif->tif_rawcp, cc);
+ tif->tif_rawcp += cc;
+ tif->tif_rawcc -= cc;
+ return (1);
+}
+
+/*
+ * Seek forwards nrows in the current strip.
+ */
+static int
+DumpModeSeek(TIFF* tif, uint32 nrows)
+{
+ tif->tif_rawcp += nrows * tif->tif_scanlinesize;
+ tif->tif_rawcc -= nrows * tif->tif_scanlinesize;
+ return (1);
+}
+
+/*
+ * Initialize dump mode.
+ */
+int
+TIFFInitDumpMode(TIFF* tif, int scheme)
+{
+ (void) scheme;
+ tif->tif_fixuptags = DumpFixupTags;
+ tif->tif_decoderow = DumpModeDecode;
+ tif->tif_decodestrip = DumpModeDecode;
+ tif->tif_decodetile = DumpModeDecode;
+ tif->tif_encoderow = DumpModeEncode;
+ tif->tif_encodestrip = DumpModeEncode;
+ tif->tif_encodetile = DumpModeEncode;
+ tif->tif_seek = DumpModeSeek;
+ return (1);
+}
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_error.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_error.c
new file mode 100644
index 0000000..3a478c3
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_error.c
@@ -0,0 +1,85 @@
+/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_error.c,v 1.5 2010-03-10 18:56:48 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+/*TIFFErrorHandlerExt _TIFFerrorHandlerExt = NULL;*/
+/* Modify here for use _TIFFerrorHandlerExt by Sunliang.Liu 20090715 */
+TIFFErrorHandler _TIFFerrorHandler = NULL;
+
+TIFFErrorHandler
+TIFFSetErrorHandler(TIFFErrorHandler handler)
+{
+ TIFFErrorHandler prev = _TIFFerrorHandler;
+ _TIFFerrorHandler = handler;
+ return (prev);
+}
+
+TIFFErrorHandlerExt
+TIFFSetErrorHandlerExt(TIFFErrorHandlerExt handler)
+{
+ TIFFErrorHandlerExt prev = _TIFFerrorHandlerExt;
+ _TIFFerrorHandlerExt = handler;
+ return (prev);
+}
+
+void
+TIFFError(const char* module, const char* fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ if (_TIFFerrorHandler)
+ (*_TIFFerrorHandler)(module, fmt, ap);
+ if (_TIFFerrorHandlerExt)
+ (*_TIFFerrorHandlerExt)(0, module, fmt, ap);
+ va_end(ap);
+}
+
+void
+TIFFErrorExt(thandle_t fd, const char* module, const char* fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ if (_TIFFerrorHandler)
+ (*_TIFFerrorHandler)(module, fmt, ap);
+ if (_TIFFerrorHandlerExt)
+ (*_TIFFerrorHandlerExt)(fd, module, fmt, ap);
+ va_end(ap);
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_extension.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_extension.c
new file mode 100644
index 0000000..474cd79
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_extension.c
@@ -0,0 +1,120 @@
+/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_extension.c,v 1.7 2010-03-10 18:56:48 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Various routines support external extension of the tag set, and other
+ * application extension capabilities.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+int TIFFGetTagListCount( TIFF *tif )
+
+{
+ TIFFDirectory* td = &tif->tif_dir;
+
+ return td->td_customValueCount;
+}
+
+uint32 TIFFGetTagListEntry( TIFF *tif, int tag_index )
+
+{
+ TIFFDirectory* td = &tif->tif_dir;
+
+ if( tag_index < 0 || tag_index >= td->td_customValueCount )
+ return (uint32)(-1);
+ else
+ return td->td_customValues[tag_index].info->field_tag;
+}
+
+/*
+** This provides read/write access to the TIFFTagMethods within the TIFF
+** structure to application code without giving access to the private
+** TIFF structure.
+*/
+TIFFTagMethods *TIFFAccessTagMethods( TIFF *tif )
+
+{
+ return &(tif->tif_tagmethods);
+}
+
+void *TIFFGetClientInfo( TIFF *tif, const char *name )
+
+{
+ TIFFClientInfoLink *link = tif->tif_clientinfo;
+
+ while( link != NULL && strcmp(link->name,name) != 0 )
+ link = link->next;
+
+ if( link != NULL )
+ return link->data;
+ else
+ return NULL;
+}
+
+void TIFFSetClientInfo( TIFF *tif, void *data, const char *name )
+
+{
+ TIFFClientInfoLink *link = tif->tif_clientinfo;
+
+ /*
+ ** Do we have an existing link with this name? If so, just
+ ** set it.
+ */
+ while( link != NULL && strcmp(link->name,name) != 0 )
+ link = link->next;
+
+ if( link != NULL )
+ {
+ link->data = data;
+ return;
+ }
+
+ /*
+ ** Create a new link.
+ */
+
+ link = (TIFFClientInfoLink *) _TIFFmalloc(sizeof(TIFFClientInfoLink));
+ assert (link != NULL);
+ link->next = tif->tif_clientinfo;
+ link->name = (char *) _TIFFmalloc((tmsize_t)(strlen(name)+1));
+ assert (link->name != NULL);
+ strcpy(link->name, name);
+ link->data = data;
+
+ tif->tif_clientinfo = link;
+}
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3.c
new file mode 100644
index 0000000..986a3f4
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3.c
@@ -0,0 +1,1625 @@
+/* $Id: tif_fax3.c,v 1.74 2012-06-21 02:01:31 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1990-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#ifdef CCITT_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * CCITT Group 3 (T.4) and Group 4 (T.6) Compression Support.
+ *
+ * This file contains support for decoding and encoding TIFF
+ * compression algorithms 2, 3, 4, and 32771.
+ *
+ * Decoder support is derived, with permission, from the code
+ * in Frank Cringle's viewfax program;
+ * Copyright (C) 1990, 1995 Frank D. Cringle.
+ */
+#include "tif_fax3.h"
+#define G3CODES
+#include "t4.h"
+#include <stdio.h>
+
+/*
+ * Compression+decompression state blocks are
+ * derived from this ``base state'' block.
+ */
+typedef struct {
+ int rw_mode; /* O_RDONLY for decode, else encode */
+ int mode; /* operating mode */
+ tmsize_t rowbytes; /* bytes in a decoded scanline */
+ uint32 rowpixels; /* pixels in a scanline */
+
+ uint16 cleanfaxdata; /* CleanFaxData tag */
+ uint32 badfaxrun; /* BadFaxRun tag */
+ uint32 badfaxlines; /* BadFaxLines tag */
+ uint32 groupoptions; /* Group 3/4 options tag */
+
+ TIFFVGetMethod vgetparent; /* super-class method */
+ TIFFVSetMethod vsetparent; /* super-class method */
+ TIFFPrintMethod printdir; /* super-class method */
+} Fax3BaseState;
+#define Fax3State(tif) ((Fax3BaseState*) (tif)->tif_data)
+
+typedef enum { G3_1D, G3_2D } Ttag;
+typedef struct {
+ Fax3BaseState b;
+
+ /* Decoder state info */
+ const unsigned char* bitmap; /* bit reversal table */
+ uint32 data; /* current i/o byte/word */
+ int bit; /* current i/o bit in byte */
+ int EOLcnt; /* count of EOL codes recognized */
+ TIFFFaxFillFunc fill; /* fill routine */
+ uint32* runs; /* b&w runs for current/previous row */
+ uint32* refruns; /* runs for reference line */
+ uint32* curruns; /* runs for current line */
+
+ /* Encoder state info */
+ Ttag tag; /* encoding state */
+ unsigned char* refline; /* reference line for 2d decoding */
+ int k; /* #rows left that can be 2d encoded */
+ int maxk; /* max #rows that can be 2d encoded */
+
+ int line;
+} Fax3CodecState;
+#define DecoderState(tif) ((Fax3CodecState*) Fax3State(tif))
+#define EncoderState(tif) ((Fax3CodecState*) Fax3State(tif))
+
+#define is2DEncoding(sp) (sp->b.groupoptions & GROUP3OPT_2DENCODING)
+#define isAligned(p,t) ((((size_t)(p)) & (sizeof (t)-1)) == 0)
+
+/*
+ * Group 3 and Group 4 Decoding.
+ */
+
+/*
+ * These macros glue the TIFF library state to
+ * the state expected by Frank's decoder.
+ */
+#define DECLARE_STATE(tif, sp, mod) \
+ static const char module[] = mod; \
+ Fax3CodecState* sp = DecoderState(tif); \
+ int a0; /* reference element */ \
+ int lastx = sp->b.rowpixels; /* last element in row */ \
+ uint32 BitAcc; /* bit accumulator */ \
+ int BitsAvail; /* # valid bits in BitAcc */ \
+ int RunLength; /* length of current run */ \
+ unsigned char* cp; /* next byte of input data */ \
+ unsigned char* ep; /* end of input data */ \
+ uint32* pa; /* place to stuff next run */ \
+ uint32* thisrun; /* current row's run array */ \
+ int EOLcnt; /* # EOL codes recognized */ \
+ const unsigned char* bitmap = sp->bitmap; /* input data bit reverser */ \
+ const TIFFFaxTabEnt* TabEnt
+#define DECLARE_STATE_2D(tif, sp, mod) \
+ DECLARE_STATE(tif, sp, mod); \
+ int b1; /* next change on prev line */ \
+ uint32* pb /* next run in reference line */\
+/*
+ * Load any state that may be changed during decoding.
+ */
+#define CACHE_STATE(tif, sp) do { \
+ BitAcc = sp->data; \
+ BitsAvail = sp->bit; \
+ EOLcnt = sp->EOLcnt; \
+ cp = (unsigned char*) tif->tif_rawcp; \
+ ep = cp + tif->tif_rawcc; \
+} while (0)
+/*
+ * Save state possibly changed during decoding.
+ */
+#define UNCACHE_STATE(tif, sp) do { \
+ sp->bit = BitsAvail; \
+ sp->data = BitAcc; \
+ sp->EOLcnt = EOLcnt; \
+ tif->tif_rawcc -= (tmsize_t)((uint8*) cp - tif->tif_rawcp); \
+ tif->tif_rawcp = (uint8*) cp; \
+} while (0)
+
+/*
+ * Setup state for decoding a strip.
+ */
+static int
+Fax3PreDecode(TIFF* tif, uint16 s)
+{
+ Fax3CodecState* sp = DecoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+ sp->bit = 0; /* force initial read */
+ sp->data = 0;
+ sp->EOLcnt = 0; /* force initial scan for EOL */
+ /*
+ * Decoder assumes lsb-to-msb bit order. Note that we select
+ * this here rather than in Fax3SetupState so that viewers can
+ * hold the image open, fiddle with the FillOrder tag value,
+ * and then re-decode the image. Otherwise they'd need to close
+ * and open the image to get the state reset.
+ */
+ sp->bitmap =
+ TIFFGetBitRevTable(tif->tif_dir.td_fillorder != FILLORDER_LSB2MSB);
+ if (sp->refruns) { /* init reference line to white */
+ sp->refruns[0] = (uint32) sp->b.rowpixels;
+ sp->refruns[1] = 0;
+ }
+ sp->line = 0;
+ return (1);
+}
+
+/*
+ * Routine for handling various errors/conditions.
+ * Note how they are "glued into the decoder" by
+ * overriding the definitions used by the decoder.
+ */
+
+static void
+Fax3Unexpected(const char* module, TIFF* tif, uint32 line, uint32 a0)
+{
+ TIFFErrorExt(tif->tif_clientdata, module, "Bad code word at line %u of %s %u (x %u)",
+ line, isTiled(tif) ? "tile" : "strip",
+ (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip),
+ a0);
+}
+#define unexpected(table, a0) Fax3Unexpected(module, tif, sp->line, a0)
+
+static void
+Fax3Extension(const char* module, TIFF* tif, uint32 line, uint32 a0)
+{
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Uncompressed data (not supported) at line %u of %s %u (x %u)",
+ line, isTiled(tif) ? "tile" : "strip",
+ (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip),
+ a0);
+}
+#define extension(a0) Fax3Extension(module, tif, sp->line, a0)
+
+static void
+Fax3BadLength(const char* module, TIFF* tif, uint32 line, uint32 a0, uint32 lastx)
+{
+ TIFFWarningExt(tif->tif_clientdata, module, "%s at line %u of %s %u (got %u, expected %u)",
+ a0 < lastx ? "Premature EOL" : "Line length mismatch",
+ line, isTiled(tif) ? "tile" : "strip",
+ (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip),
+ a0, lastx);
+}
+#define badlength(a0,lastx) Fax3BadLength(module, tif, sp->line, a0, lastx)
+
+static void
+Fax3PrematureEOF(const char* module, TIFF* tif, uint32 line, uint32 a0)
+{
+ TIFFWarningExt(tif->tif_clientdata, module, "Premature EOF at line %u of %s %u (x %u)",
+ line, isTiled(tif) ? "tile" : "strip",
+ (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip),
+ a0);
+}
+#define prematureEOF(a0) Fax3PrematureEOF(module, tif, sp->line, a0)
+
+#define Nop
+
+/*
+ * Decode the requested amount of G3 1D-encoded data.
+ */
+static int
+Fax3Decode1D(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
+{
+ DECLARE_STATE(tif, sp, "Fax3Decode1D");
+ (void) s;
+ if (occ % sp->b.rowbytes)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
+ return (-1);
+ }
+ CACHE_STATE(tif, sp);
+ thisrun = sp->curruns;
+ while (occ > 0) {
+ a0 = 0;
+ RunLength = 0;
+ pa = thisrun;
+#ifdef FAX3_DEBUG
+ printf("\nBitAcc=%08X, BitsAvail = %d\n", BitAcc, BitsAvail);
+ printf("-------------------- %d\n", tif->tif_row);
+ fflush(stdout);
+#endif
+ SYNC_EOL(EOF1D);
+ EXPAND1D(EOF1Da);
+ (*sp->fill)(buf, thisrun, pa, lastx);
+ buf += sp->b.rowbytes;
+ occ -= sp->b.rowbytes;
+ sp->line++;
+ continue;
+ EOF1D: /* premature EOF */
+ CLEANUP_RUNS();
+ EOF1Da: /* premature EOF */
+ (*sp->fill)(buf, thisrun, pa, lastx);
+ UNCACHE_STATE(tif, sp);
+ return (-1);
+ }
+ UNCACHE_STATE(tif, sp);
+ return (1);
+}
+
+#define SWAP(t,a,b) { t x; x = (a); (a) = (b); (b) = x; }
+/*
+ * Decode the requested amount of G3 2D-encoded data.
+ */
+static int
+Fax3Decode2D(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
+{
+ DECLARE_STATE_2D(tif, sp, "Fax3Decode2D");
+ int is1D; /* current line is 1d/2d-encoded */
+ (void) s;
+ if (occ % sp->b.rowbytes)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
+ return (-1);
+ }
+ CACHE_STATE(tif, sp);
+ while (occ > 0) {
+ a0 = 0;
+ RunLength = 0;
+ pa = thisrun = sp->curruns;
+#ifdef FAX3_DEBUG
+ printf("\nBitAcc=%08X, BitsAvail = %d EOLcnt = %d",
+ BitAcc, BitsAvail, EOLcnt);
+#endif
+ SYNC_EOL(EOF2D);
+ NeedBits8(1, EOF2D);
+ is1D = GetBits(1); /* 1D/2D-encoding tag bit */
+ ClrBits(1);
+#ifdef FAX3_DEBUG
+ printf(" %s\n-------------------- %d\n",
+ is1D ? "1D" : "2D", tif->tif_row);
+ fflush(stdout);
+#endif
+ pb = sp->refruns;
+ b1 = *pb++;
+ if (is1D)
+ EXPAND1D(EOF2Da);
+ else
+ EXPAND2D(EOF2Da);
+ (*sp->fill)(buf, thisrun, pa, lastx);
+ SETVALUE(0); /* imaginary change for reference */
+ SWAP(uint32*, sp->curruns, sp->refruns);
+ buf += sp->b.rowbytes;
+ occ -= sp->b.rowbytes;
+ sp->line++;
+ continue;
+ EOF2D: /* premature EOF */
+ CLEANUP_RUNS();
+ EOF2Da: /* premature EOF */
+ (*sp->fill)(buf, thisrun, pa, lastx);
+ UNCACHE_STATE(tif, sp);
+ return (-1);
+ }
+ UNCACHE_STATE(tif, sp);
+ return (1);
+}
+#undef SWAP
+
+/*
+ * The ZERO & FILL macros must handle spans < 2*sizeof(long) bytes.
+ * For machines with 64-bit longs this is <16 bytes; otherwise
+ * this is <8 bytes. We optimize the code here to reflect the
+ * machine characteristics.
+ */
+#if SIZEOF_UNSIGNED_LONG == 8
+# define FILL(n, cp) \
+ switch (n) { \
+ case 15:(cp)[14] = 0xff; case 14:(cp)[13] = 0xff; case 13: (cp)[12] = 0xff;\
+ case 12:(cp)[11] = 0xff; case 11:(cp)[10] = 0xff; case 10: (cp)[9] = 0xff;\
+ case 9: (cp)[8] = 0xff; case 8: (cp)[7] = 0xff; case 7: (cp)[6] = 0xff;\
+ case 6: (cp)[5] = 0xff; case 5: (cp)[4] = 0xff; case 4: (cp)[3] = 0xff;\
+ case 3: (cp)[2] = 0xff; case 2: (cp)[1] = 0xff; \
+ case 1: (cp)[0] = 0xff; (cp) += (n); case 0: ; \
+ }
+# define ZERO(n, cp) \
+ switch (n) { \
+ case 15:(cp)[14] = 0; case 14:(cp)[13] = 0; case 13: (cp)[12] = 0; \
+ case 12:(cp)[11] = 0; case 11:(cp)[10] = 0; case 10: (cp)[9] = 0; \
+ case 9: (cp)[8] = 0; case 8: (cp)[7] = 0; case 7: (cp)[6] = 0; \
+ case 6: (cp)[5] = 0; case 5: (cp)[4] = 0; case 4: (cp)[3] = 0; \
+ case 3: (cp)[2] = 0; case 2: (cp)[1] = 0; \
+ case 1: (cp)[0] = 0; (cp) += (n); case 0: ; \
+ }
+#else
+# define FILL(n, cp) \
+ switch (n) { \
+ case 7: (cp)[6] = 0xff; case 6: (cp)[5] = 0xff; case 5: (cp)[4] = 0xff; \
+ case 4: (cp)[3] = 0xff; case 3: (cp)[2] = 0xff; case 2: (cp)[1] = 0xff; \
+ case 1: (cp)[0] = 0xff; (cp) += (n); case 0: ; \
+ }
+# define ZERO(n, cp) \
+ switch (n) { \
+ case 7: (cp)[6] = 0; case 6: (cp)[5] = 0; case 5: (cp)[4] = 0; \
+ case 4: (cp)[3] = 0; case 3: (cp)[2] = 0; case 2: (cp)[1] = 0; \
+ case 1: (cp)[0] = 0; (cp) += (n); case 0: ; \
+ }
+#endif
+
+/*
+ * Bit-fill a row according to the white/black
+ * runs generated during G3/G4 decoding.
+ */
+void
+_TIFFFax3fillruns(unsigned char* buf, uint32* runs, uint32* erun, uint32 lastx)
+{
+ static const unsigned char _fillmasks[] =
+ { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff };
+ unsigned char* cp;
+ uint32 x, bx, run,bx_;/* add bx_ = 8-bx for avoid ms evc compiler bug*/
+ int32 n, nw;
+ long* lp;
+
+ if ((erun-runs)&1)
+ *erun++ = 0;
+ x = 0;
+ for (; runs < erun; runs += 2) {
+ run = runs[0];
+ if (x+run > lastx || run > lastx )
+ run = runs[0] = (uint32) (lastx - x);
+ if (run) {
+ cp = buf + (x>>3);
+ bx = x&7;
+// if (run > 8-bx) {
+// if (bx) { /* align to byte boundary */
+// *cp++ &= 0xff << (8-bx);
+// run -= 8-bx;
+// }
+//Modify by Sunliang.Liu 20090804
+//Detail: For avoid ms evc compiler bug in WCE ARMV4(I) Release
+ bx_ = 8-bx;
+ if (run > bx_) {
+ if (bx) { /* align to byte boundary */
+ *cp++ &= 0xff << bx_;
+ run -= bx_;
+ }
+ if( (n = run >> 3) != 0 ) { /* multiple bytes to fill */
+ if ((n/sizeof (long)) > 1) {
+ /*
+ * Align to longword boundary and fill.
+ */
+ for (; n && !isAligned(cp, long); n--)
+ *cp++ = 0x00;
+ lp = (long*) cp;
+ nw = (int32)(n / sizeof (long));
+ n -= nw * sizeof (long);
+ do {
+ *lp++ = 0L;
+ } while (--nw);
+ cp = (unsigned char*) lp;
+ }
+#ifdef FAX3_DEBUG
+ printf("_TIFFFax3fillruns ZERO: %d\n",n);
+#endif
+ ZERO(n, cp);
+ run &= 7;
+ }
+ if (run)
+ cp[0] &= 0xff >> run;
+ } else
+ cp[0] &= ~(_fillmasks[run]>>bx);
+ x += runs[0];
+ }
+ run = runs[1];
+ if (x+run > lastx || run > lastx )
+ run = runs[1] = lastx - x;
+ if (run) {
+ cp = buf + (x>>3);
+ bx = x&7;
+ if (run > 8-bx) {
+ if (bx) { /* align to byte boundary */
+ *cp++ |= 0xff >> bx;
+ run -= 8-bx;
+ }
+ if( (n = run>>3) != 0 ) { /* multiple bytes to fill */
+ if ((n/sizeof (long)) > 1) {
+ /*
+ * Align to longword boundary and fill.
+ */
+ for (; n && !isAligned(cp, long); n--)
+ *cp++ = 0xff;
+ lp = (long*) cp;
+ nw = (int32)(n / sizeof (long));
+ n -= nw * sizeof (long);
+ do {
+ *lp++ = -1L;
+ } while (--nw);
+ cp = (unsigned char*) lp;
+ }
+#ifdef FAX3_DEBUG
+ printf("_TIFFFax3fillruns FILL: %d\n",n);
+#endif
+ FILL(n, cp);
+ run &= 7;
+ }
+ if (run)
+ cp[0] |= 0xff00 >> run;
+ } else
+ cp[0] |= _fillmasks[run]>>bx;
+ x += runs[1];
+ }
+ }
+ assert(x == lastx);
+}
+#undef ZERO
+#undef FILL
+
+static int
+Fax3FixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
+
+/*
+ * Setup G3/G4-related compression/decompression state
+ * before data is processed. This routine is called once
+ * per image -- it sets up different state based on whether
+ * or not decoding or encoding is being done and whether
+ * 1D- or 2D-encoded data is involved.
+ */
+static int
+Fax3SetupState(TIFF* tif)
+{
+ static const char module[] = "Fax3SetupState";
+ TIFFDirectory* td = &tif->tif_dir;
+ Fax3BaseState* sp = Fax3State(tif);
+ int needsRefLine;
+ Fax3CodecState* dsp = (Fax3CodecState*) Fax3State(tif);
+ tmsize_t rowbytes;
+ uint32 rowpixels, nruns;
+
+ if (td->td_bitspersample != 1) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Bits/sample must be 1 for Group 3/4 encoding/decoding");
+ return (0);
+ }
+ /*
+ * Calculate the scanline/tile widths.
+ */
+ if (isTiled(tif)) {
+ rowbytes = TIFFTileRowSize(tif);
+ rowpixels = td->td_tilewidth;
+ } else {
+ rowbytes = TIFFScanlineSize(tif);
+ rowpixels = td->td_imagewidth;
+ }
+ sp->rowbytes = rowbytes;
+ sp->rowpixels = rowpixels;
+ /*
+ * Allocate any additional space required for decoding/encoding.
+ */
+ needsRefLine = (
+ (sp->groupoptions & GROUP3OPT_2DENCODING) ||
+ td->td_compression == COMPRESSION_CCITTFAX4
+ );
+
+ /*
+ Assure that allocation computations do not overflow.
+
+ TIFFroundup and TIFFSafeMultiply return zero on integer overflow
+ */
+ dsp->runs=(uint32*) NULL;
+ nruns = TIFFroundup_32(rowpixels,32);
+ if (needsRefLine) {
+ nruns = TIFFSafeMultiply(uint32,nruns,2);
+ }
+ if ((nruns == 0) || (TIFFSafeMultiply(uint32,nruns,2) == 0)) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Row pixels integer overflow (rowpixels %u)",
+ rowpixels);
+ return (0);
+ }
+ dsp->runs = (uint32*) _TIFFCheckMalloc(tif,
+ TIFFSafeMultiply(uint32,nruns,2),
+ sizeof (uint32),
+ "for Group 3/4 run arrays");
+ if (dsp->runs == NULL)
+ return (0);
+ memset( dsp->runs, 0, TIFFSafeMultiply(uint32,nruns,2)*sizeof(uint32));
+ dsp->curruns = dsp->runs;
+ if (needsRefLine)
+ dsp->refruns = dsp->runs + nruns;
+ else
+ dsp->refruns = NULL;
+ if (td->td_compression == COMPRESSION_CCITTFAX3
+ && is2DEncoding(dsp)) { /* NB: default is 1D routine */
+ tif->tif_decoderow = Fax3Decode2D;
+ tif->tif_decodestrip = Fax3Decode2D;
+ tif->tif_decodetile = Fax3Decode2D;
+ }
+
+ if (needsRefLine) { /* 2d encoding */
+ Fax3CodecState* esp = EncoderState(tif);
+ /*
+ * 2d encoding requires a scanline
+ * buffer for the ``reference line''; the
+ * scanline against which delta encoding
+ * is referenced. The reference line must
+ * be initialized to be ``white'' (done elsewhere).
+ */
+ esp->refline = (unsigned char*) _TIFFmalloc(rowbytes);
+ if (esp->refline == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for Group 3/4 reference line");
+ return (0);
+ }
+ } else /* 1d encoding */
+ EncoderState(tif)->refline = NULL;
+
+ return (1);
+}
+
+/*
+ * CCITT Group 3 FAX Encoding.
+ */
+
+#define Fax3FlushBits(tif, sp) { \
+ if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize) \
+ (void) TIFFFlushData1(tif); \
+ *(tif)->tif_rawcp++ = (uint8) (sp)->data; \
+ (tif)->tif_rawcc++; \
+ (sp)->data = 0, (sp)->bit = 8; \
+}
+#define _FlushBits(tif) { \
+ if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize) \
+ (void) TIFFFlushData1(tif); \
+ *(tif)->tif_rawcp++ = (uint8) data; \
+ (tif)->tif_rawcc++; \
+ data = 0, bit = 8; \
+}
+static const int _msbmask[9] =
+ { 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };
+#define _PutBits(tif, bits, length) { \
+ while (length > bit) { \
+ data |= bits >> (length - bit); \
+ length -= bit; \
+ _FlushBits(tif); \
+ } \
+ assert( length < 9 ); \
+ data |= (bits & _msbmask[length]) << (bit - length); \
+ bit -= length; \
+ if (bit == 0) \
+ _FlushBits(tif); \
+}
+
+/*
+ * Write a variable-length bit-value to
+ * the output stream. Values are
+ * assumed to be at most 16 bits.
+ */
+static void
+Fax3PutBits(TIFF* tif, unsigned int bits, unsigned int length)
+{
+ Fax3CodecState* sp = EncoderState(tif);
+ unsigned int bit = sp->bit;
+ int data = sp->data;
+
+ _PutBits(tif, bits, length);
+
+ sp->data = data;
+ sp->bit = bit;
+}
+
+/*
+ * Write a code to the output stream.
+ */
+#define putcode(tif, te) Fax3PutBits(tif, (te)->code, (te)->length)
+
+#ifdef FAX3_DEBUG
+#define DEBUG_COLOR(w) (tab == TIFFFaxWhiteCodes ? w "W" : w "B")
+#define DEBUG_PRINT(what,len) { \
+ int t; \
+ printf("%08X/%-2d: %s%5d\t", data, bit, DEBUG_COLOR(what), len); \
+ for (t = length-1; t >= 0; t--) \
+ putchar(code & (1<<t) ? '1' : '0'); \
+ putchar('\n'); \
+}
+#endif
+
+/*
+ * Write the sequence of codes that describes
+ * the specified span of zero's or one's. The
+ * appropriate table that holds the make-up and
+ * terminating codes is supplied.
+ */
+static void
+putspan(TIFF* tif, int32 span, const tableentry* tab)
+{
+ Fax3CodecState* sp = EncoderState(tif);
+ unsigned int bit = sp->bit;
+ int data = sp->data;
+ unsigned int code, length;
+
+ while (span >= 2624) {
+ const tableentry* te = &tab[63 + (2560>>6)];
+ code = te->code, length = te->length;
+#ifdef FAX3_DEBUG
+ DEBUG_PRINT("MakeUp", te->runlen);
+#endif
+ _PutBits(tif, code, length);
+ span -= te->runlen;
+ }
+ if (span >= 64) {
+ const tableentry* te = &tab[63 + (span>>6)];
+ assert(te->runlen == 64*(span>>6));
+ code = te->code, length = te->length;
+#ifdef FAX3_DEBUG
+ DEBUG_PRINT("MakeUp", te->runlen);
+#endif
+ _PutBits(tif, code, length);
+ span -= te->runlen;
+ }
+ code = tab[span].code, length = tab[span].length;
+#ifdef FAX3_DEBUG
+ DEBUG_PRINT(" Term", tab[span].runlen);
+#endif
+ _PutBits(tif, code, length);
+
+ sp->data = data;
+ sp->bit = bit;
+}
+
+/*
+ * Write an EOL code to the output stream. The zero-fill
+ * logic for byte-aligning encoded scanlines is handled
+ * here. We also handle writing the tag bit for the next
+ * scanline when doing 2d encoding.
+ */
+static void
+Fax3PutEOL(TIFF* tif)
+{
+ Fax3CodecState* sp = EncoderState(tif);
+ unsigned int bit = sp->bit;
+ int data = sp->data;
+ unsigned int code, length, tparm;
+
+ if (sp->b.groupoptions & GROUP3OPT_FILLBITS) {
+ /*
+ * Force bit alignment so EOL will terminate on
+ * a byte boundary. That is, force the bit alignment
+ * to 16-12 = 4 before putting out the EOL code.
+ */
+ int align = 8 - 4;
+ if (align != sp->bit) {
+ if (align > sp->bit)
+ align = sp->bit + (8 - align);
+ else
+ align = sp->bit - align;
+ code = 0;
+ tparm=align;
+ _PutBits(tif, 0, tparm);
+ }
+ }
+ code = EOL, length = 12;
+ if (is2DEncoding(sp))
+ code = (code<<1) | (sp->tag == G3_1D), length++;
+ _PutBits(tif, code, length);
+
+ sp->data = data;
+ sp->bit = bit;
+}
+
+/*
+ * Reset encoding state at the start of a strip.
+ */
+static int
+Fax3PreEncode(TIFF* tif, uint16 s)
+{
+ Fax3CodecState* sp = EncoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+ sp->bit = 8;
+ sp->data = 0;
+ sp->tag = G3_1D;
+ /*
+ * This is necessary for Group 4; otherwise it isn't
+ * needed because the first scanline of each strip ends
+ * up being copied into the refline.
+ */
+ if (sp->refline)
+ _TIFFmemset(sp->refline, 0x00, sp->b.rowbytes);
+ if (is2DEncoding(sp)) {
+ float res = tif->tif_dir.td_yresolution;
+ /*
+ * The CCITT spec says that when doing 2d encoding, you
+ * should only do it on K consecutive scanlines, where K
+ * depends on the resolution of the image being encoded
+ * (2 for <= 200 lpi, 4 for > 200 lpi). Since the directory
+ * code initializes td_yresolution to 0, this code will
+ * select a K of 2 unless the YResolution tag is set
+ * appropriately. (Note also that we fudge a little here
+ * and use 150 lpi to avoid problems with units conversion.)
+ */
+ if (tif->tif_dir.td_resolutionunit == RESUNIT_CENTIMETER)
+ res *= 2.54f; /* convert to inches */
+ sp->maxk = (res > 150 ? 4 : 2);
+ sp->k = sp->maxk-1;
+ } else
+ sp->k = sp->maxk = 0;
+ sp->line = 0;
+ return (1);
+}
+
+static const unsigned char zeroruns[256] = {
+ 8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, /* 0x00 - 0x0f */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0x10 - 0x1f */
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0x20 - 0x2f */
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0x30 - 0x3f */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40 - 0x4f */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x50 - 0x5f */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60 - 0x6f */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x70 - 0x7f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80 - 0x8f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90 - 0x9f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xa0 - 0xaf */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xb0 - 0xbf */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xc0 - 0xcf */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xd0 - 0xdf */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xe0 - 0xef */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xf0 - 0xff */
+};
+static const unsigned char oneruns[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 - 0x0f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 - 0x1f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 - 0x2f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x30 - 0x3f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x40 - 0x4f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50 - 0x5f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x60 - 0x6f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x70 - 0x7f */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x80 - 0x8f */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x90 - 0x9f */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xa0 - 0xaf */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xb0 - 0xbf */
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xc0 - 0xcf */
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xd0 - 0xdf */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xe0 - 0xef */
+ 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8, /* 0xf0 - 0xff */
+};
+
+/*
+ * On certain systems it pays to inline
+ * the routines that find pixel spans.
+ */
+#ifdef VAXC
+static int32 find0span(unsigned char*, int32, int32);
+static int32 find1span(unsigned char*, int32, int32);
+#pragma inline(find0span,find1span)
+#endif
+
+/*
+ * Find a span of ones or zeros using the supplied
+ * table. The ``base'' of the bit string is supplied
+ * along with the start+end bit indices.
+ */
+inline static int32
+find0span(unsigned char* bp, int32 bs, int32 be)
+{
+ int32 bits = be - bs;
+ int32 n, span;
+
+ bp += bs>>3;
+ /*
+ * Check partial byte on lhs.
+ */
+ if (bits > 0 && (n = (bs & 7))) {
+ span = zeroruns[(*bp << n) & 0xff];
+ if (span > 8-n) /* table value too generous */
+ span = 8-n;
+ if (span > bits) /* constrain span to bit range */
+ span = bits;
+ if (n+span < 8) /* doesn't extend to edge of byte */
+ return (span);
+ bits -= span;
+ bp++;
+ } else
+ span = 0;
+ if (bits >= (int32)(2 * 8 * sizeof(long))) {
+ long* lp;
+ /*
+ * Align to longword boundary and check longwords.
+ */
+ while (!isAligned(bp, long)) {
+ if (*bp != 0x00)
+ return (span + zeroruns[*bp]);
+ span += 8, bits -= 8;
+ bp++;
+ }
+ lp = (long*) bp;
+ while ((bits >= (int32)(8 * sizeof(long))) && (0 == *lp)) {
+ span += 8*sizeof (long), bits -= 8*sizeof (long);
+ lp++;
+ }
+ bp = (unsigned char*) lp;
+ }
+ /*
+ * Scan full bytes for all 0's.
+ */
+ while (bits >= 8) {
+ if (*bp != 0x00) /* end of run */
+ return (span + zeroruns[*bp]);
+ span += 8, bits -= 8;
+ bp++;
+ }
+ /*
+ * Check partial byte on rhs.
+ */
+ if (bits > 0) {
+ n = zeroruns[*bp];
+ span += (n > bits ? bits : n);
+ }
+ return (span);
+}
+
+inline static int32
+find1span(unsigned char* bp, int32 bs, int32 be)
+{
+ int32 bits = be - bs;
+ int32 n, span;
+
+ bp += bs>>3;
+ /*
+ * Check partial byte on lhs.
+ */
+ if (bits > 0 && (n = (bs & 7))) {
+ span = oneruns[(*bp << n) & 0xff];
+ if (span > 8-n) /* table value too generous */
+ span = 8-n;
+ if (span > bits) /* constrain span to bit range */
+ span = bits;
+ if (n+span < 8) /* doesn't extend to edge of byte */
+ return (span);
+ bits -= span;
+ bp++;
+ } else
+ span = 0;
+ if (bits >= (int32)(2 * 8 * sizeof(long))) {
+ long* lp;
+ /*
+ * Align to longword boundary and check longwords.
+ */
+ while (!isAligned(bp, long)) {
+ if (*bp != 0xff)
+ return (span + oneruns[*bp]);
+ span += 8, bits -= 8;
+ bp++;
+ }
+ lp = (long*) bp;
+ while ((bits >= (int32)(8 * sizeof(long))) && (~0 == *lp)) {
+ span += 8*sizeof (long), bits -= 8*sizeof (long);
+ lp++;
+ }
+ bp = (unsigned char*) lp;
+ }
+ /*
+ * Scan full bytes for all 1's.
+ */
+ while (bits >= 8) {
+ if (*bp != 0xff) /* end of run */
+ return (span + oneruns[*bp]);
+ span += 8, bits -= 8;
+ bp++;
+ }
+ /*
+ * Check partial byte on rhs.
+ */
+ if (bits > 0) {
+ n = oneruns[*bp];
+ span += (n > bits ? bits : n);
+ }
+ return (span);
+}
+
+/*
+ * Return the offset of the next bit in the range
+ * [bs..be] that is different from the specified
+ * color. The end, be, is returned if no such bit
+ * exists.
+ */
+#define finddiff(_cp, _bs, _be, _color) \
+ (_bs + (_color ? find1span(_cp,_bs,_be) : find0span(_cp,_bs,_be)))
+/*
+ * Like finddiff, but also check the starting bit
+ * against the end in case start > end.
+ */
+#define finddiff2(_cp, _bs, _be, _color) \
+ (_bs < _be ? finddiff(_cp,_bs,_be,_color) : _be)
+
+/*
+ * 1d-encode a row of pixels. The encoding is
+ * a sequence of all-white or all-black spans
+ * of pixels encoded with Huffman codes.
+ */
+static int
+Fax3Encode1DRow(TIFF* tif, unsigned char* bp, uint32 bits)
+{
+ Fax3CodecState* sp = EncoderState(tif);
+ int32 span;
+ uint32 bs = 0;
+
+ for (;;) {
+ span = find0span(bp, bs, bits); /* white span */
+ putspan(tif, span, TIFFFaxWhiteCodes);
+ bs += span;
+ if (bs >= bits)
+ break;
+ span = find1span(bp, bs, bits); /* black span */
+ putspan(tif, span, TIFFFaxBlackCodes);
+ bs += span;
+ if (bs >= bits)
+ break;
+ }
+ if (sp->b.mode & (FAXMODE_BYTEALIGN|FAXMODE_WORDALIGN)) {
+ if (sp->bit != 8) /* byte-align */
+ Fax3FlushBits(tif, sp);
+ if ((sp->b.mode&FAXMODE_WORDALIGN) &&
+ !isAligned(tif->tif_rawcp, uint16))
+ Fax3FlushBits(tif, sp);
+ }
+ return (1);
+}
+
+static const tableentry horizcode =
+ { 3, 0x1, 0 }; /* 001 */
+static const tableentry passcode =
+ { 4, 0x1, 0 }; /* 0001 */
+static const tableentry vcodes[7] = {
+ { 7, 0x03, 0 }, /* 0000 011 */
+ { 6, 0x03, 0 }, /* 0000 11 */
+ { 3, 0x03, 0 }, /* 011 */
+ { 1, 0x1, 0 }, /* 1 */
+ { 3, 0x2, 0 }, /* 010 */
+ { 6, 0x02, 0 }, /* 0000 10 */
+ { 7, 0x02, 0 } /* 0000 010 */
+};
+
+/*
+ * 2d-encode a row of pixels. Consult the CCITT
+ * documentation for the algorithm.
+ */
+static int
+Fax3Encode2DRow(TIFF* tif, unsigned char* bp, unsigned char* rp, uint32 bits)
+{
+#define PIXEL(buf,ix) ((((buf)[(ix)>>3]) >> (7-((ix)&7))) & 1)
+ uint32 a0 = 0;
+ uint32 a1 = (PIXEL(bp, 0) != 0 ? 0 : finddiff(bp, 0, bits, 0));
+ uint32 b1 = (PIXEL(rp, 0) != 0 ? 0 : finddiff(rp, 0, bits, 0));
+ uint32 a2, b2;
+
+ for (;;) {
+ b2 = finddiff2(rp, b1, bits, PIXEL(rp,b1));
+ if (b2 >= a1) {
+ int32 d = b1 - a1;
+ if (!(-3 <= d && d <= 3)) { /* horizontal mode */
+ a2 = finddiff2(bp, a1, bits, PIXEL(bp,a1));
+ putcode(tif, &horizcode);
+ if (a0+a1 == 0 || PIXEL(bp, a0) == 0) {
+ putspan(tif, a1-a0, TIFFFaxWhiteCodes);
+ putspan(tif, a2-a1, TIFFFaxBlackCodes);
+ } else {
+ putspan(tif, a1-a0, TIFFFaxBlackCodes);
+ putspan(tif, a2-a1, TIFFFaxWhiteCodes);
+ }
+ a0 = a2;
+ } else { /* vertical mode */
+ putcode(tif, &vcodes[d+3]);
+ a0 = a1;
+ }
+ } else { /* pass mode */
+ putcode(tif, &passcode);
+ a0 = b2;
+ }
+ if (a0 >= bits)
+ break;
+ a1 = finddiff(bp, a0, bits, PIXEL(bp,a0));
+ b1 = finddiff(rp, a0, bits, !PIXEL(bp,a0));
+ b1 = finddiff(rp, b1, bits, PIXEL(bp,a0));
+ }
+ return (1);
+#undef PIXEL
+}
+
+/*
+ * Encode a buffer of pixels.
+ */
+static int
+Fax3Encode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ static const char module[] = "Fax3Encode";
+ Fax3CodecState* sp = EncoderState(tif);
+ (void) s;
+ if (cc % sp->b.rowbytes)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be written");
+ return (0);
+ }
+ while (cc > 0) {
+ if ((sp->b.mode & FAXMODE_NOEOL) == 0)
+ Fax3PutEOL(tif);
+ if (is2DEncoding(sp)) {
+ if (sp->tag == G3_1D) {
+ if (!Fax3Encode1DRow(tif, bp, sp->b.rowpixels))
+ return (0);
+ sp->tag = G3_2D;
+ } else {
+ if (!Fax3Encode2DRow(tif, bp, sp->refline,
+ sp->b.rowpixels))
+ return (0);
+ sp->k--;
+ }
+ if (sp->k == 0) {
+ sp->tag = G3_1D;
+ sp->k = sp->maxk-1;
+ } else
+ _TIFFmemcpy(sp->refline, bp, sp->b.rowbytes);
+ } else {
+ if (!Fax3Encode1DRow(tif, bp, sp->b.rowpixels))
+ return (0);
+ }
+ bp += sp->b.rowbytes;
+ cc -= sp->b.rowbytes;
+ }
+ return (1);
+}
+
+static int
+Fax3PostEncode(TIFF* tif)
+{
+ Fax3CodecState* sp = EncoderState(tif);
+
+ if (sp->bit != 8)
+ Fax3FlushBits(tif, sp);
+ return (1);
+}
+
+static void
+Fax3Close(TIFF* tif)
+{
+ if ((Fax3State(tif)->mode & FAXMODE_NORTC) == 0) {
+ Fax3CodecState* sp = EncoderState(tif);
+ unsigned int code = EOL;
+ unsigned int length = 12;
+ int i;
+
+ if (is2DEncoding(sp))
+ code = (code<<1) | (sp->tag == G3_1D), length++;
+ for (i = 0; i < 6; i++)
+ Fax3PutBits(tif, code, length);
+ Fax3FlushBits(tif, sp);
+ }
+}
+
+static void
+Fax3Cleanup(TIFF* tif)
+{
+ Fax3CodecState* sp = DecoderState(tif);
+
+ assert(sp != 0);
+
+ tif->tif_tagmethods.vgetfield = sp->b.vgetparent;
+ tif->tif_tagmethods.vsetfield = sp->b.vsetparent;
+ tif->tif_tagmethods.printdir = sp->b.printdir;
+
+ if (sp->runs)
+ _TIFFfree(sp->runs);
+ if (sp->refline)
+ _TIFFfree(sp->refline);
+
+ _TIFFfree(tif->tif_data);
+ tif->tif_data = NULL;
+
+ _TIFFSetDefaultCompressionState(tif);
+}
+
+#define FIELD_BADFAXLINES (FIELD_CODEC+0)
+#define FIELD_CLEANFAXDATA (FIELD_CODEC+1)
+#define FIELD_BADFAXRUN (FIELD_CODEC+2)
+
+#define FIELD_OPTIONS (FIELD_CODEC+7)
+
+static const TIFFField faxFields[] = {
+ { TIFFTAG_FAXMODE, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, FALSE, FALSE, "FaxMode", NULL },
+ { TIFFTAG_FAXFILLFUNC, 0, 0, TIFF_ANY, 0, TIFF_SETGET_OTHER, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, FALSE, FALSE, "FaxFillFunc", NULL },
+ { TIFFTAG_BADFAXLINES, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_BADFAXLINES, TRUE, FALSE, "BadFaxLines", NULL },
+ { TIFFTAG_CLEANFAXDATA, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UINT16, FIELD_CLEANFAXDATA, TRUE, FALSE, "CleanFaxData", NULL },
+ { TIFFTAG_CONSECUTIVEBADFAXLINES, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_BADFAXRUN, TRUE, FALSE, "ConsecutiveBadFaxLines", NULL }};
+static const TIFFField fax3Fields[] = {
+ { TIFFTAG_GROUP3OPTIONS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_OPTIONS, FALSE, FALSE, "Group3Options", NULL },
+};
+static const TIFFField fax4Fields[] = {
+ { TIFFTAG_GROUP4OPTIONS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_OPTIONS, FALSE, FALSE, "Group4Options", NULL },
+};
+
+static int
+Fax3VSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ Fax3BaseState* sp = Fax3State(tif);
+ const TIFFField* fip;
+
+ assert(sp != 0);
+ assert(sp->vsetparent != 0);
+
+ switch (tag) {
+ case TIFFTAG_FAXMODE:
+ sp->mode = (int) va_arg(ap, int);
+ return 1; /* NB: pseudo tag */
+ case TIFFTAG_FAXFILLFUNC:
+ DecoderState(tif)->fill = va_arg(ap, TIFFFaxFillFunc);
+ return 1; /* NB: pseudo tag */
+ case TIFFTAG_GROUP3OPTIONS:
+ /* XXX: avoid reading options if compression mismatches. */
+ if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX3)
+ sp->groupoptions = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_GROUP4OPTIONS:
+ /* XXX: avoid reading options if compression mismatches. */
+ if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX4)
+ sp->groupoptions = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_BADFAXLINES:
+ sp->badfaxlines = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_CLEANFAXDATA:
+ sp->cleanfaxdata = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_CONSECUTIVEBADFAXLINES:
+ sp->badfaxrun = (uint32) va_arg(ap, uint32);
+ break;
+ default:
+ return (*sp->vsetparent)(tif, tag, ap);
+ }
+
+ if ((fip = TIFFFieldWithTag(tif, tag)))
+ TIFFSetFieldBit(tif, fip->field_bit);
+ else
+ return 0;
+
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+ return 1;
+}
+
+static int
+Fax3VGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ Fax3BaseState* sp = Fax3State(tif);
+
+ assert(sp != 0);
+
+ switch (tag) {
+ case TIFFTAG_FAXMODE:
+ *va_arg(ap, int*) = sp->mode;
+ break;
+ case TIFFTAG_FAXFILLFUNC:
+ *va_arg(ap, TIFFFaxFillFunc*) = DecoderState(tif)->fill;
+ break;
+ case TIFFTAG_GROUP3OPTIONS:
+ case TIFFTAG_GROUP4OPTIONS:
+ *va_arg(ap, uint32*) = sp->groupoptions;
+ break;
+ case TIFFTAG_BADFAXLINES:
+ *va_arg(ap, uint32*) = sp->badfaxlines;
+ break;
+ case TIFFTAG_CLEANFAXDATA:
+ *va_arg(ap, uint16*) = sp->cleanfaxdata;
+ break;
+ case TIFFTAG_CONSECUTIVEBADFAXLINES:
+ *va_arg(ap, uint32*) = sp->badfaxrun;
+ break;
+ default:
+ return (*sp->vgetparent)(tif, tag, ap);
+ }
+ return (1);
+}
+
+static void
+Fax3PrintDir(TIFF* tif, FILE* fd, long flags)
+{
+ Fax3BaseState* sp = Fax3State(tif);
+
+ assert(sp != 0);
+
+ (void) flags;
+ if (TIFFFieldSet(tif,FIELD_OPTIONS)) {
+ const char* sep = " ";
+ if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX4) {
+ fprintf(fd, " Group 4 Options:");
+ if (sp->groupoptions & GROUP4OPT_UNCOMPRESSED)
+ fprintf(fd, "%suncompressed data", sep);
+ } else {
+
+ fprintf(fd, " Group 3 Options:");
+ if (sp->groupoptions & GROUP3OPT_2DENCODING)
+ fprintf(fd, "%s2-d encoding", sep), sep = "+";
+ if (sp->groupoptions & GROUP3OPT_FILLBITS)
+ fprintf(fd, "%sEOL padding", sep), sep = "+";
+ if (sp->groupoptions & GROUP3OPT_UNCOMPRESSED)
+ fprintf(fd, "%suncompressed data", sep);
+ }
+ fprintf(fd, " (%lu = 0x%lx)\n",
+ (unsigned long) sp->groupoptions,
+ (unsigned long) sp->groupoptions);
+ }
+ if (TIFFFieldSet(tif,FIELD_CLEANFAXDATA)) {
+ fprintf(fd, " Fax Data:");
+ switch (sp->cleanfaxdata) {
+ case CLEANFAXDATA_CLEAN:
+ fprintf(fd, " clean");
+ break;
+ case CLEANFAXDATA_REGENERATED:
+ fprintf(fd, " receiver regenerated");
+ break;
+ case CLEANFAXDATA_UNCLEAN:
+ fprintf(fd, " uncorrected errors");
+ break;
+ }
+ fprintf(fd, " (%u = 0x%x)\n",
+ sp->cleanfaxdata, sp->cleanfaxdata);
+ }
+ if (TIFFFieldSet(tif,FIELD_BADFAXLINES))
+ fprintf(fd, " Bad Fax Lines: %lu\n",
+ (unsigned long) sp->badfaxlines);
+ if (TIFFFieldSet(tif,FIELD_BADFAXRUN))
+ fprintf(fd, " Consecutive Bad Fax Lines: %lu\n",
+ (unsigned long) sp->badfaxrun);
+ if (sp->printdir)
+ (*sp->printdir)(tif, fd, flags);
+}
+
+static int
+InitCCITTFax3(TIFF* tif)
+{
+ static const char module[] = "InitCCITTFax3";
+ Fax3BaseState* sp;
+
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, faxFields, TIFFArrayCount(faxFields))) {
+ TIFFErrorExt(tif->tif_clientdata, "InitCCITTFax3",
+ "Merging common CCITT Fax codec-specific tags failed");
+ return 0;
+ }
+
+ /*
+ * Allocate state block so tag methods have storage to record values.
+ */
+ tif->tif_data = (uint8*)
+ _TIFFmalloc(sizeof (Fax3CodecState));
+
+ if (tif->tif_data == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for state block");
+ return (0);
+ }
+
+ sp = Fax3State(tif);
+ sp->rw_mode = tif->tif_mode;
+
+ /*
+ * Override parent get/set field methods.
+ */
+ sp->vgetparent = tif->tif_tagmethods.vgetfield;
+ tif->tif_tagmethods.vgetfield = Fax3VGetField; /* hook for codec tags */
+ sp->vsetparent = tif->tif_tagmethods.vsetfield;
+ tif->tif_tagmethods.vsetfield = Fax3VSetField; /* hook for codec tags */
+ sp->printdir = tif->tif_tagmethods.printdir;
+ tif->tif_tagmethods.printdir = Fax3PrintDir; /* hook for codec tags */
+ sp->groupoptions = 0;
+
+ if (sp->rw_mode == O_RDONLY) /* FIXME: improve for in place update */
+ tif->tif_flags |= TIFF_NOBITREV; /* decoder does bit reversal */
+ DecoderState(tif)->runs = NULL;
+ TIFFSetField(tif, TIFFTAG_FAXFILLFUNC, _TIFFFax3fillruns);
+ EncoderState(tif)->refline = NULL;
+
+ /*
+ * Install codec methods.
+ */
+ tif->tif_fixuptags = Fax3FixupTags;
+ tif->tif_setupdecode = Fax3SetupState;
+ tif->tif_predecode = Fax3PreDecode;
+ tif->tif_decoderow = Fax3Decode1D;
+ tif->tif_decodestrip = Fax3Decode1D;
+ tif->tif_decodetile = Fax3Decode1D;
+ tif->tif_setupencode = Fax3SetupState;
+ tif->tif_preencode = Fax3PreEncode;
+ tif->tif_postencode = Fax3PostEncode;
+ tif->tif_encoderow = Fax3Encode;
+ tif->tif_encodestrip = Fax3Encode;
+ tif->tif_encodetile = Fax3Encode;
+ tif->tif_close = Fax3Close;
+ tif->tif_cleanup = Fax3Cleanup;
+
+ return (1);
+}
+
+int
+TIFFInitCCITTFax3(TIFF* tif, int scheme)
+{
+ (void) scheme;
+ if (InitCCITTFax3(tif)) {
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, fax3Fields,
+ TIFFArrayCount(fax3Fields))) {
+ TIFFErrorExt(tif->tif_clientdata, "TIFFInitCCITTFax3",
+ "Merging CCITT Fax 3 codec-specific tags failed");
+ return 0;
+ }
+
+ /*
+ * The default format is Class/F-style w/o RTC.
+ */
+ return TIFFSetField(tif, TIFFTAG_FAXMODE, FAXMODE_CLASSF);
+ } else
+ return 01;
+}
+
+/*
+ * CCITT Group 4 (T.6) Facsimile-compatible
+ * Compression Scheme Support.
+ */
+
+#define SWAP(t,a,b) { t x; x = (a); (a) = (b); (b) = x; }
+/*
+ * Decode the requested amount of G4-encoded data.
+ */
+static int
+Fax4Decode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
+{
+#ifdef FAX3_DEBUG
+ FILE* file;
+#endif
+ DECLARE_STATE_2D(tif, sp, "Fax4Decode");
+
+ (void) s;
+ if (occ % sp->b.rowbytes)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
+ return (-1);
+ }
+ CACHE_STATE(tif, sp);
+ while (occ > 0) {
+ a0 = 0;
+ RunLength = 0;
+ pa = thisrun = sp->curruns;
+ pb = sp->refruns;
+ b1 = *pb++;
+#ifdef FAX3_DEBUG
+ printf("\nBitAcc=%08X, BitsAvail = %d\n", BitAcc, BitsAvail);
+ printf("-------------------- %d\n", tif->tif_row);
+ fflush(stdout);
+#endif
+ EXPAND2D(EOFG4);
+ if (EOLcnt)
+ goto EOFG4;
+ (*sp->fill)(buf, thisrun, pa, lastx);
+#ifdef FAX3_DEBUG
+ file = fopen("fillbuf.txt", "a");
+ fwrite(buf, sp->b.rowbytes, 1, file);
+ fclose(file);
+#endif
+ SETVALUE(0); /* imaginary change for reference */
+ SWAP(uint32*, sp->curruns, sp->refruns);
+ buf += sp->b.rowbytes;
+ occ -= sp->b.rowbytes;
+ sp->line++;
+ continue;
+ EOFG4:
+ NeedBits16( 13, BADG4 );
+ BADG4:
+#ifdef FAX3_DEBUG
+ if( GetBits(13) != 0x1001 )
+ fputs( "Bad EOFB\n", stderr );
+#endif
+ ClrBits( 13 );
+ (*sp->fill)(buf, thisrun, pa, lastx);
+#ifdef FAX3_DEBUG
+ file = fopen("fillbuf.txt", "a");
+ fwrite(buf, sp->b.rowbytes, 1, file);
+ fclose(file);
+#endif
+ UNCACHE_STATE(tif, sp);
+ return ( sp->line ? 1 : -1); /* don't error on badly-terminated strips */
+ }
+ UNCACHE_STATE(tif, sp);
+ return (1);
+}
+#undef SWAP
+
+/*
+ * Encode the requested amount of data.
+ */
+static int
+Fax4Encode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ static const char module[] = "Fax4Encode";
+ Fax3CodecState *sp = EncoderState(tif);
+ (void) s;
+ if (cc % sp->b.rowbytes)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be written");
+ return (0);
+ }
+ while (cc > 0) {
+ if (!Fax3Encode2DRow(tif, bp, sp->refline, sp->b.rowpixels))
+ return (0);
+ _TIFFmemcpy(sp->refline, bp, sp->b.rowbytes);
+ bp += sp->b.rowbytes;
+ cc -= sp->b.rowbytes;
+ }
+ return (1);
+}
+
+static int
+Fax4PostEncode(TIFF* tif)
+{
+ Fax3CodecState *sp = EncoderState(tif);
+
+ /* terminate strip w/ EOFB */
+ Fax3PutBits(tif, EOL, 12);
+ Fax3PutBits(tif, EOL, 12);
+ if (sp->bit != 8)
+ Fax3FlushBits(tif, sp);
+ return (1);
+}
+
+int
+TIFFInitCCITTFax4(TIFF* tif, int scheme)
+{
+ (void) scheme;
+ if (InitCCITTFax3(tif)) { /* reuse G3 support */
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, fax4Fields,
+ TIFFArrayCount(fax4Fields))) {
+ TIFFErrorExt(tif->tif_clientdata, "TIFFInitCCITTFax4",
+ "Merging CCITT Fax 4 codec-specific tags failed");
+ return 0;
+ }
+
+ tif->tif_decoderow = Fax4Decode;
+ tif->tif_decodestrip = Fax4Decode;
+ tif->tif_decodetile = Fax4Decode;
+ tif->tif_encoderow = Fax4Encode;
+ tif->tif_encodestrip = Fax4Encode;
+ tif->tif_encodetile = Fax4Encode;
+ tif->tif_postencode = Fax4PostEncode;
+ /*
+ * Suppress RTC at the end of each strip.
+ */
+ return TIFFSetField(tif, TIFFTAG_FAXMODE, FAXMODE_NORTC);
+ } else
+ return (0);
+}
+
+/*
+ * CCITT Group 3 1-D Modified Huffman RLE Compression Support.
+ * (Compression algorithms 2 and 32771)
+ */
+
+/*
+ * Decode the requested amount of RLE-encoded data.
+ */
+static int
+Fax3DecodeRLE(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
+{
+ DECLARE_STATE(tif, sp, "Fax3DecodeRLE");
+ int mode = sp->b.mode;
+ (void) s;
+ if (occ % sp->b.rowbytes)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
+ return (-1);
+ }
+ CACHE_STATE(tif, sp);
+ thisrun = sp->curruns;
+ while (occ > 0) {
+ a0 = 0;
+ RunLength = 0;
+ pa = thisrun;
+#ifdef FAX3_DEBUG
+ printf("\nBitAcc=%08X, BitsAvail = %d\n", BitAcc, BitsAvail);
+ printf("-------------------- %d\n", tif->tif_row);
+ fflush(stdout);
+#endif
+ EXPAND1D(EOFRLE);
+ (*sp->fill)(buf, thisrun, pa, lastx);
+ /*
+ * Cleanup at the end of the row.
+ */
+ if (mode & FAXMODE_BYTEALIGN) {
+ int n = BitsAvail - (BitsAvail &~ 7);
+ ClrBits(n);
+ } else if (mode & FAXMODE_WORDALIGN) {
+ int n = BitsAvail - (BitsAvail &~ 15);
+ ClrBits(n);
+ if (BitsAvail == 0 && !isAligned(cp, uint16))
+ cp++;
+ }
+ buf += sp->b.rowbytes;
+ occ -= sp->b.rowbytes;
+ sp->line++;
+ continue;
+ EOFRLE: /* premature EOF */
+ (*sp->fill)(buf, thisrun, pa, lastx);
+ UNCACHE_STATE(tif, sp);
+ return (-1);
+ }
+ UNCACHE_STATE(tif, sp);
+ return (1);
+}
+
+int
+TIFFInitCCITTRLE(TIFF* tif, int scheme)
+{
+ (void) scheme;
+ if (InitCCITTFax3(tif)) { /* reuse G3 support */
+ tif->tif_decoderow = Fax3DecodeRLE;
+ tif->tif_decodestrip = Fax3DecodeRLE;
+ tif->tif_decodetile = Fax3DecodeRLE;
+ /*
+ * Suppress RTC+EOLs when encoding and byte-align data.
+ */
+ return TIFFSetField(tif, TIFFTAG_FAXMODE,
+ FAXMODE_NORTC|FAXMODE_NOEOL|FAXMODE_BYTEALIGN);
+ } else
+ return (0);
+}
+
+int
+TIFFInitCCITTRLEW(TIFF* tif, int scheme)
+{
+ (void) scheme;
+ if (InitCCITTFax3(tif)) { /* reuse G3 support */
+ tif->tif_decoderow = Fax3DecodeRLE;
+ tif->tif_decodestrip = Fax3DecodeRLE;
+ tif->tif_decodetile = Fax3DecodeRLE;
+ /*
+ * Suppress RTC+EOLs when encoding and word-align data.
+ */
+ return TIFFSetField(tif, TIFFTAG_FAXMODE,
+ FAXMODE_NORTC|FAXMODE_NOEOL|FAXMODE_WORDALIGN);
+ } else
+ return (0);
+}
+#endif /* CCITT_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3.h b/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3.h
new file mode 100644
index 0000000..b0f46c9
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3.h
@@ -0,0 +1,538 @@
+/* $Id: tif_fax3.h,v 1.9 2011-03-10 20:23:07 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1990-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _FAX3_
+#define _FAX3_
+/*
+ * TIFF Library.
+ *
+ * CCITT Group 3 (T.4) and Group 4 (T.6) Decompression Support.
+ *
+ * Decoder support is derived, with permission, from the code
+ * in Frank Cringle's viewfax program;
+ * Copyright (C) 1990, 1995 Frank D. Cringle.
+ */
+#include "tiff.h"
+
+/*
+ * To override the default routine used to image decoded
+ * spans one can use the pseduo tag TIFFTAG_FAXFILLFUNC.
+ * The routine must have the type signature given below;
+ * for example:
+ *
+ * fillruns(unsigned char* buf, uint32* runs, uint32* erun, uint32 lastx)
+ *
+ * where buf is place to set the bits, runs is the array of b&w run
+ * lengths (white then black), erun is the last run in the array, and
+ * lastx is the width of the row in pixels. Fill routines can assume
+ * the run array has room for at least lastx runs and can overwrite
+ * data in the run array as needed (e.g. to append zero runs to bring
+ * the count up to a nice multiple).
+ */
+typedef void (*TIFFFaxFillFunc)(unsigned char*, uint32*, uint32*, uint32);
+
+/*
+ * The default run filler; made external for other decoders.
+ */
+#if defined(__cplusplus)
+extern "C" {
+#endif
+extern void _TIFFFax3fillruns(unsigned char*, uint32*, uint32*, uint32);
+#if defined(__cplusplus)
+}
+#endif
+
+
+/* finite state machine codes */
+#define S_Null 0
+#define S_Pass 1
+#define S_Horiz 2
+#define S_V0 3
+#define S_VR 4
+#define S_VL 5
+#define S_Ext 6
+#define S_TermW 7
+#define S_TermB 8
+#define S_MakeUpW 9
+#define S_MakeUpB 10
+#define S_MakeUp 11
+#define S_EOL 12
+
+typedef struct { /* state table entry */
+ unsigned char State; /* see above */
+ unsigned char Width; /* width of code in bits */
+ uint32 Param; /* unsigned 32-bit run length in bits */
+} TIFFFaxTabEnt;
+
+extern const TIFFFaxTabEnt TIFFFaxMainTable[];
+extern const TIFFFaxTabEnt TIFFFaxWhiteTable[];
+extern const TIFFFaxTabEnt TIFFFaxBlackTable[];
+
+/*
+ * The following macros define the majority of the G3/G4 decoder
+ * algorithm using the state tables defined elsewhere. To build
+ * a decoder you need some setup code and some glue code. Note
+ * that you may also need/want to change the way the NeedBits*
+ * macros get input data if, for example, you know the data to be
+ * decoded is properly aligned and oriented (doing so before running
+ * the decoder can be a big performance win).
+ *
+ * Consult the decoder in the TIFF library for an idea of what you
+ * need to define and setup to make use of these definitions.
+ *
+ * NB: to enable a debugging version of these macros define FAX3_DEBUG
+ * before including this file. Trace output goes to stdout.
+ */
+
+#ifndef EndOfData
+#define EndOfData() (cp >= ep)
+#endif
+/*
+ * Need <=8 or <=16 bits of input data. Unlike viewfax we
+ * cannot use/assume a word-aligned, properly bit swizzled
+ * input data set because data may come from an arbitrarily
+ * aligned, read-only source such as a memory-mapped file.
+ * Note also that the viewfax decoder does not check for
+ * running off the end of the input data buffer. This is
+ * possible for G3-encoded data because it prescans the input
+ * data to count EOL markers, but can cause problems for G4
+ * data. In any event, we don't prescan and must watch for
+ * running out of data since we can't permit the library to
+ * scan past the end of the input data buffer.
+ *
+ * Finally, note that we must handle remaindered data at the end
+ * of a strip specially. The coder asks for a fixed number of
+ * bits when scanning for the next code. This may be more bits
+ * than are actually present in the data stream. If we appear
+ * to run out of data but still have some number of valid bits
+ * remaining then we makeup the requested amount with zeros and
+ * return successfully. If the returned data is incorrect then
+ * we should be called again and get a premature EOF error;
+ * otherwise we should get the right answer.
+ */
+#ifndef NeedBits8
+#define NeedBits8(n,eoflab) do { \
+ if (BitsAvail < (n)) { \
+ if (EndOfData()) { \
+ if (BitsAvail == 0) /* no valid bits */ \
+ goto eoflab; \
+ BitsAvail = (n); /* pad with zeros */ \
+ } else { \
+ BitAcc |= ((uint32) bitmap[*cp++])<<BitsAvail; \
+ BitsAvail += 8; \
+ } \
+ } \
+} while (0)
+#endif
+#ifndef NeedBits16
+#define NeedBits16(n,eoflab) do { \
+ if (BitsAvail < (n)) { \
+ if (EndOfData()) { \
+ if (BitsAvail == 0) /* no valid bits */ \
+ goto eoflab; \
+ BitsAvail = (n); /* pad with zeros */ \
+ } else { \
+ BitAcc |= ((uint32) bitmap[*cp++])<<BitsAvail; \
+ if ((BitsAvail += 8) < (n)) { \
+ if (EndOfData()) { \
+ /* NB: we know BitsAvail is non-zero here */ \
+ BitsAvail = (n); /* pad with zeros */ \
+ } else { \
+ BitAcc |= ((uint32) bitmap[*cp++])<<BitsAvail; \
+ BitsAvail += 8; \
+ } \
+ } \
+ } \
+ } \
+} while (0)
+#endif
+#define GetBits(n) (BitAcc & ((1<<(n))-1))
+#define ClrBits(n) do { \
+ BitsAvail -= (n); \
+ BitAcc >>= (n); \
+} while (0)
+
+#ifdef FAX3_DEBUG
+static const char* StateNames[] = {
+ "Null ",
+ "Pass ",
+ "Horiz ",
+ "V0 ",
+ "VR ",
+ "VL ",
+ "Ext ",
+ "TermW ",
+ "TermB ",
+ "MakeUpW",
+ "MakeUpB",
+ "MakeUp ",
+ "EOL ",
+};
+#define DEBUG_SHOW putchar(BitAcc & (1 << t) ? '1' : '0')
+#define LOOKUP8(wid,tab,eoflab) do { \
+ int t; \
+ NeedBits8(wid,eoflab); \
+ TabEnt = tab + GetBits(wid); \
+ printf("%08lX/%d: %s%5d\t", (long) BitAcc, BitsAvail, \
+ StateNames[TabEnt->State], TabEnt->Param); \
+ for (t = 0; t < TabEnt->Width; t++) \
+ DEBUG_SHOW; \
+ putchar('\n'); \
+ fflush(stdout); \
+ ClrBits(TabEnt->Width); \
+} while (0)
+#define LOOKUP16(wid,tab,eoflab) do { \
+ int t; \
+ NeedBits16(wid,eoflab); \
+ TabEnt = tab + GetBits(wid); \
+ printf("%08lX/%d: %s%5d\t", (long) BitAcc, BitsAvail, \
+ StateNames[TabEnt->State], TabEnt->Param); \
+ for (t = 0; t < TabEnt->Width; t++) \
+ DEBUG_SHOW; \
+ putchar('\n'); \
+ fflush(stdout); \
+ ClrBits(TabEnt->Width); \
+} while (0)
+
+#define SETVALUE(x) do { \
+ *pa++ = RunLength + (x); \
+ printf("SETVALUE: %d\t%d\n", RunLength + (x), a0); \
+ a0 += x; \
+ RunLength = 0; \
+} while (0)
+#else
+#define LOOKUP8(wid,tab,eoflab) do { \
+ NeedBits8(wid,eoflab); \
+ TabEnt = tab + GetBits(wid); \
+ ClrBits(TabEnt->Width); \
+} while (0)
+#define LOOKUP16(wid,tab,eoflab) do { \
+ NeedBits16(wid,eoflab); \
+ TabEnt = tab + GetBits(wid); \
+ ClrBits(TabEnt->Width); \
+} while (0)
+
+/*
+ * Append a run to the run length array for the
+ * current row and reset decoding state.
+ */
+#define SETVALUE(x) do { \
+ *pa++ = RunLength + (x); \
+ a0 += (x); \
+ RunLength = 0; \
+} while (0)
+#endif
+
+/*
+ * Synchronize input decoding at the start of each
+ * row by scanning for an EOL (if appropriate) and
+ * skipping any trash data that might be present
+ * after a decoding error. Note that the decoding
+ * done elsewhere that recognizes an EOL only consumes
+ * 11 consecutive zero bits. This means that if EOLcnt
+ * is non-zero then we still need to scan for the final flag
+ * bit that is part of the EOL code.
+ */
+#define SYNC_EOL(eoflab) do { \
+ if (EOLcnt == 0) { \
+ for (;;) { \
+ NeedBits16(11,eoflab); \
+ if (GetBits(11) == 0) \
+ break; \
+ ClrBits(1); \
+ } \
+ } \
+ for (;;) { \
+ NeedBits8(8,eoflab); \
+ if (GetBits(8)) \
+ break; \
+ ClrBits(8); \
+ } \
+ while (GetBits(1) == 0) \
+ ClrBits(1); \
+ ClrBits(1); /* EOL bit */ \
+ EOLcnt = 0; /* reset EOL counter/flag */ \
+} while (0)
+
+/*
+ * Cleanup the array of runs after decoding a row.
+ * We adjust final runs to insure the user buffer is not
+ * overwritten and/or undecoded area is white filled.
+ */
+#define CLEANUP_RUNS() do { \
+ if (RunLength) \
+ SETVALUE(0); \
+ if (a0 != lastx) { \
+ badlength(a0, lastx); \
+ while (a0 > lastx && pa > thisrun) \
+ a0 -= *--pa; \
+ if (a0 < lastx) { \
+ if (a0 < 0) \
+ a0 = 0; \
+ if ((pa-thisrun)&1) \
+ SETVALUE(0); \
+ SETVALUE(lastx - a0); \
+ } else if (a0 > lastx) { \
+ SETVALUE(lastx); \
+ SETVALUE(0); \
+ } \
+ } \
+} while (0)
+
+/*
+ * Decode a line of 1D-encoded data.
+ *
+ * The line expanders are written as macros so that they can be reused
+ * but still have direct access to the local variables of the "calling"
+ * function.
+ *
+ * Note that unlike the original version we have to explicitly test for
+ * a0 >= lastx after each black/white run is decoded. This is because
+ * the original code depended on the input data being zero-padded to
+ * insure the decoder recognized an EOL before running out of data.
+ */
+#define EXPAND1D(eoflab) do { \
+ for (;;) { \
+ for (;;) { \
+ LOOKUP16(12, TIFFFaxWhiteTable, eof1d); \
+ switch (TabEnt->State) { \
+ case S_EOL: \
+ EOLcnt = 1; \
+ goto done1d; \
+ case S_TermW: \
+ SETVALUE(TabEnt->Param); \
+ goto doneWhite1d; \
+ case S_MakeUpW: \
+ case S_MakeUp: \
+ a0 += TabEnt->Param; \
+ RunLength += TabEnt->Param; \
+ break; \
+ default: \
+ unexpected("WhiteTable", a0); \
+ goto done1d; \
+ } \
+ } \
+ doneWhite1d: \
+ if (a0 >= lastx) \
+ goto done1d; \
+ for (;;) { \
+ LOOKUP16(13, TIFFFaxBlackTable, eof1d); \
+ switch (TabEnt->State) { \
+ case S_EOL: \
+ EOLcnt = 1; \
+ goto done1d; \
+ case S_TermB: \
+ SETVALUE(TabEnt->Param); \
+ goto doneBlack1d; \
+ case S_MakeUpB: \
+ case S_MakeUp: \
+ a0 += TabEnt->Param; \
+ RunLength += TabEnt->Param; \
+ break; \
+ default: \
+ unexpected("BlackTable", a0); \
+ goto done1d; \
+ } \
+ } \
+ doneBlack1d: \
+ if (a0 >= lastx) \
+ goto done1d; \
+ if( *(pa-1) == 0 && *(pa-2) == 0 ) \
+ pa -= 2; \
+ } \
+eof1d: \
+ prematureEOF(a0); \
+ CLEANUP_RUNS(); \
+ goto eoflab; \
+done1d: \
+ CLEANUP_RUNS(); \
+} while (0)
+
+/*
+ * Update the value of b1 using the array
+ * of runs for the reference line.
+ */
+#define CHECK_b1 do { \
+ if (pa != thisrun) while (b1 <= a0 && b1 < lastx) { \
+ b1 += pb[0] + pb[1]; \
+ pb += 2; \
+ } \
+} while (0)
+
+/*
+ * Expand a row of 2D-encoded data.
+ */
+#define EXPAND2D(eoflab) do { \
+ while (a0 < lastx) { \
+ LOOKUP8(7, TIFFFaxMainTable, eof2d); \
+ switch (TabEnt->State) { \
+ case S_Pass: \
+ CHECK_b1; \
+ b1 += *pb++; \
+ RunLength += b1 - a0; \
+ a0 = b1; \
+ b1 += *pb++; \
+ break; \
+ case S_Horiz: \
+ if ((pa-thisrun)&1) { \
+ for (;;) { /* black first */ \
+ LOOKUP16(13, TIFFFaxBlackTable, eof2d); \
+ switch (TabEnt->State) { \
+ case S_TermB: \
+ SETVALUE(TabEnt->Param); \
+ goto doneWhite2da; \
+ case S_MakeUpB: \
+ case S_MakeUp: \
+ a0 += TabEnt->Param; \
+ RunLength += TabEnt->Param; \
+ break; \
+ default: \
+ goto badBlack2d; \
+ } \
+ } \
+ doneWhite2da:; \
+ for (;;) { /* then white */ \
+ LOOKUP16(12, TIFFFaxWhiteTable, eof2d); \
+ switch (TabEnt->State) { \
+ case S_TermW: \
+ SETVALUE(TabEnt->Param); \
+ goto doneBlack2da; \
+ case S_MakeUpW: \
+ case S_MakeUp: \
+ a0 += TabEnt->Param; \
+ RunLength += TabEnt->Param; \
+ break; \
+ default: \
+ goto badWhite2d; \
+ } \
+ } \
+ doneBlack2da:; \
+ } else { \
+ for (;;) { /* white first */ \
+ LOOKUP16(12, TIFFFaxWhiteTable, eof2d); \
+ switch (TabEnt->State) { \
+ case S_TermW: \
+ SETVALUE(TabEnt->Param); \
+ goto doneWhite2db; \
+ case S_MakeUpW: \
+ case S_MakeUp: \
+ a0 += TabEnt->Param; \
+ RunLength += TabEnt->Param; \
+ break; \
+ default: \
+ goto badWhite2d; \
+ } \
+ } \
+ doneWhite2db:; \
+ for (;;) { /* then black */ \
+ LOOKUP16(13, TIFFFaxBlackTable, eof2d); \
+ switch (TabEnt->State) { \
+ case S_TermB: \
+ SETVALUE(TabEnt->Param); \
+ goto doneBlack2db; \
+ case S_MakeUpB: \
+ case S_MakeUp: \
+ a0 += TabEnt->Param; \
+ RunLength += TabEnt->Param; \
+ break; \
+ default: \
+ goto badBlack2d; \
+ } \
+ } \
+ doneBlack2db:; \
+ } \
+ CHECK_b1; \
+ break; \
+ case S_V0: \
+ CHECK_b1; \
+ SETVALUE(b1 - a0); \
+ b1 += *pb++; \
+ break; \
+ case S_VR: \
+ CHECK_b1; \
+ SETVALUE(b1 - a0 + TabEnt->Param); \
+ b1 += *pb++; \
+ break; \
+ case S_VL: \
+ CHECK_b1; \
+ if (b1 <= (int) (a0 + TabEnt->Param)) { \
+ if (b1 < (int) (a0 + TabEnt->Param) || pa != thisrun) { \
+ unexpected("VL", a0); \
+ goto eol2d; \
+ } \
+ } \
+ SETVALUE(b1 - a0 - TabEnt->Param); \
+ b1 -= *--pb; \
+ break; \
+ case S_Ext: \
+ *pa++ = lastx - a0; \
+ extension(a0); \
+ goto eol2d; \
+ case S_EOL: \
+ *pa++ = lastx - a0; \
+ NeedBits8(4,eof2d); \
+ if (GetBits(4)) \
+ unexpected("EOL", a0); \
+ ClrBits(4); \
+ EOLcnt = 1; \
+ goto eol2d; \
+ default: \
+ badMain2d: \
+ unexpected("MainTable", a0); \
+ goto eol2d; \
+ badBlack2d: \
+ unexpected("BlackTable", a0); \
+ goto eol2d; \
+ badWhite2d: \
+ unexpected("WhiteTable", a0); \
+ goto eol2d; \
+ eof2d: \
+ prematureEOF(a0); \
+ CLEANUP_RUNS(); \
+ goto eoflab; \
+ } \
+ } \
+ if (RunLength) { \
+ if (RunLength + a0 < lastx) { \
+ /* expect a final V0 */ \
+ NeedBits8(1,eof2d); \
+ if (!GetBits(1)) \
+ goto badMain2d; \
+ ClrBits(1); \
+ } \
+ SETVALUE(0); \
+ } \
+eol2d: \
+ CLEANUP_RUNS(); \
+} while (0)
+#endif /* _FAX3_ */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3sm.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3sm.c
new file mode 100644
index 0000000..47a532c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_fax3sm.c
@@ -0,0 +1,1263 @@
+/* WARNING, this file was automatically generated by the
+ mkg3states program */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiff.h"
+#include "tif_fax3.h"
+ const TIFFFaxTabEnt TIFFFaxMainTable[128] = {
+{12,7,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},
+{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{5,6,2},{3,1,0},{5,3,1},{3,1,0},
+{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},
+{4,3,1},{3,1,0},{5,7,3},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},
+{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{4,6,2},{3,1,0},
+{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},{5,3,1},{3,1,0},
+{2,3,0},{3,1,0},{4,3,1},{3,1,0},{6,7,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},
+{4,3,1},{3,1,0},{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},
+{5,6,2},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},
+{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{4,7,3},{3,1,0},{5,3,1},{3,1,0},
+{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},
+{4,3,1},{3,1,0},{4,6,2},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},
+{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0}
+};
+ const TIFFFaxTabEnt TIFFFaxWhiteTable[4096] = {
+{12,11,0},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},
+{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},
+{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},{9,8,448},{7,4,6},
+{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{9,9,1472},{7,4,5},{7,8,43},{7,6,17},{9,9,1216},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},{7,4,2},{7,4,7},
+{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,960},{7,4,6},{7,8,31},{7,5,8},
+{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},
+{7,7,26},{7,5,9},{9,9,704},{7,4,6},{7,8,37},{9,5,128},{7,7,25},{7,6,15},{9,8,320},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{11,11,1792},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},
+{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,40},{7,6,16},
+{9,9,832},{7,4,6},{7,7,19},{7,5,8},{7,8,56},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,46},{7,4,3},{7,5,11},{7,4,5},{7,8,54},{7,5,9},{9,8,512},{7,4,6},{7,8,36},{9,5,128},
+{7,8,52},{7,6,15},{7,8,0},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1600},{7,4,5},
+{7,8,44},{7,6,17},{9,9,1344},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,30},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,8,34},{9,5,128},{7,8,50},{7,6,14},{7,8,62},{7,4,4},{7,4,2},{7,4,7},{7,8,48},{7,4,3},
+{7,8,60},{7,4,5},{7,8,42},{7,6,16},{9,9,1088},{7,4,6},{7,8,32},{7,5,8},{7,8,58},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},
+{9,8,640},{7,4,6},{7,8,38},{9,5,128},{7,7,25},{7,6,15},{9,8,384},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{0,0,0},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},
+{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,39},{7,6,16},{9,8,576},{7,4,6},
+{7,7,19},{7,5,8},{7,8,55},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,45},{7,4,3},
+{7,5,11},{7,4,5},{7,8,53},{7,5,9},{9,8,448},{7,4,6},{7,8,35},{9,5,128},{7,8,51},{7,6,15},
+{7,8,63},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1536},{7,4,5},{7,8,43},{7,6,17},
+{9,9,1280},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,29},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,33},{9,5,128},
+{7,8,49},{7,6,14},{7,8,61},{7,4,4},{7,4,2},{7,4,7},{7,8,47},{7,4,3},{7,8,59},{7,4,5},
+{7,8,41},{7,6,16},{9,9,1024},{7,4,6},{7,8,31},{7,5,8},{7,8,57},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,9,768},{7,4,6},
+{7,8,37},{9,5,128},{7,7,25},{7,6,15},{9,8,320},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{11,11,1856},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},
+{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,40},{7,6,16},{9,9,896},{7,4,6},{7,7,19},{7,5,8},
+{7,8,56},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,46},{7,4,3},{7,5,11},{7,4,5},
+{7,8,54},{7,5,9},{9,8,512},{7,4,6},{7,8,36},{9,5,128},{7,8,52},{7,6,15},{7,8,0},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1728},{7,4,5},{7,8,44},{7,6,17},{9,9,1408},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,30},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,34},{9,5,128},{7,8,50},{7,6,14},
+{7,8,62},{7,4,4},{7,4,2},{7,4,7},{7,8,48},{7,4,3},{7,8,60},{7,4,5},{7,8,42},{7,6,16},
+{9,9,1152},{7,4,6},{7,8,32},{7,5,8},{7,8,58},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,8,640},{7,4,6},{7,8,38},{9,5,128},
+{7,7,25},{7,6,15},{9,8,384},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},
+{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{0,0,0},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},
+{7,7,27},{7,4,5},{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},
+{9,8,448},{7,4,6},{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{9,9,1472},{7,4,5},{7,8,43},{7,6,17},{9,9,1216},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},
+{7,4,2},{7,4,7},{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,960},{7,4,6},
+{7,8,31},{7,5,8},{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},
+{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,9,704},{7,4,6},{7,8,37},{9,5,128},{7,7,25},{7,6,15},
+{9,8,320},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},
+{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{11,12,2112},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},
+{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},
+{7,8,40},{7,6,16},{9,9,832},{7,4,6},{7,7,19},{7,5,8},{7,8,56},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,46},{7,4,3},{7,5,11},{7,4,5},{7,8,54},{7,5,9},{9,8,512},{7,4,6},
+{7,8,36},{9,5,128},{7,8,52},{7,6,15},{7,8,0},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{9,9,1600},{7,4,5},{7,8,44},{7,6,17},{9,9,1344},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,30},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,8,34},{9,5,128},{7,8,50},{7,6,14},{7,8,62},{7,4,4},{7,4,2},{7,4,7},
+{7,8,48},{7,4,3},{7,8,60},{7,4,5},{7,8,42},{7,6,16},{9,9,1088},{7,4,6},{7,8,32},{7,5,8},
+{7,8,58},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},
+{7,7,26},{7,5,9},{9,8,640},{7,4,6},{7,8,38},{9,5,128},{7,7,25},{7,6,15},{9,8,384},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{0,0,0},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},
+{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,39},{7,6,16},
+{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},{9,8,448},{7,4,6},{7,8,35},{9,5,128},
+{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1536},{7,4,5},
+{7,8,43},{7,6,17},{9,9,1280},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},{7,4,2},{7,4,7},{7,8,47},{7,4,3},
+{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,1024},{7,4,6},{7,8,31},{7,5,8},{7,8,57},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},
+{9,9,768},{7,4,6},{7,8,37},{9,5,128},{7,7,25},{7,6,15},{9,8,320},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{11,12,2368},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},
+{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,40},{7,6,16},{9,9,896},{7,4,6},
+{7,7,19},{7,5,8},{7,8,56},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,46},{7,4,3},
+{7,5,11},{7,4,5},{7,8,54},{7,5,9},{9,8,512},{7,4,6},{7,8,36},{9,5,128},{7,8,52},{7,6,15},
+{7,8,0},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1728},{7,4,5},{7,8,44},{7,6,17},
+{9,9,1408},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,30},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,34},{9,5,128},
+{7,8,50},{7,6,14},{7,8,62},{7,4,4},{7,4,2},{7,4,7},{7,8,48},{7,4,3},{7,8,60},{7,4,5},
+{7,8,42},{7,6,16},{9,9,1152},{7,4,6},{7,8,32},{7,5,8},{7,8,58},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,8,640},{7,4,6},
+{7,8,38},{9,5,128},{7,7,25},{7,6,15},{9,8,384},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{0,0,0},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},
+{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},
+{7,8,55},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},
+{7,8,53},{7,5,9},{9,8,448},{7,4,6},{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1472},{7,4,5},{7,8,43},{7,6,17},{9,9,1216},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},
+{7,8,61},{7,4,4},{7,4,2},{7,4,7},{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},
+{9,9,960},{7,4,6},{7,8,31},{7,5,8},{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
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+{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},
+{7,8,55},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},
+{7,8,53},{7,5,9},{9,8,448},{7,4,6},{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1472},{7,4,5},{7,8,43},{7,6,17},{9,9,1216},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},
+{7,8,61},{7,4,4},{7,4,2},{7,4,7},{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},
+{9,9,960},{7,4,6},{7,8,31},{7,5,8},{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,9,704},{7,4,6},{7,8,37},{9,5,128},
+{7,7,25},{7,6,15},{9,8,320},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},
+{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{11,12,2304},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},
+{7,7,27},{7,4,5},{7,8,40},{7,6,16},{9,9,832},{7,4,6},{7,7,19},{7,5,8},{7,8,56},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,46},{7,4,3},{7,5,11},{7,4,5},{7,8,54},{7,5,9},
+{9,8,512},{7,4,6},{7,8,36},{9,5,128},{7,8,52},{7,6,15},{7,8,0},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{9,9,1600},{7,4,5},{7,8,44},{7,6,17},{9,9,1344},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,30},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,34},{9,5,128},{7,8,50},{7,6,14},{7,8,62},{7,4,4},
+{7,4,2},{7,4,7},{7,8,48},{7,4,3},{7,8,60},{7,4,5},{7,8,42},{7,6,16},{9,9,1088},{7,4,6},
+{7,8,32},{7,5,8},{7,8,58},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},
+{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,8,640},{7,4,6},{7,8,38},{9,5,128},{7,7,25},{7,6,15},
+{9,8,384},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},
+{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{0,0,0},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},
+{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},
+{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},{9,8,448},{7,4,6},
+{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{9,9,1536},{7,4,5},{7,8,43},{7,6,17},{9,9,1280},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},{7,4,2},{7,4,7},
+{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,1024},{7,4,6},{7,8,31},{7,5,8},
+{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},
+{7,7,26},{7,5,9},{9,9,768},{7,4,6},{7,8,37},{9,5,128},{7,7,25},{7,6,15},{9,8,320},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{11,12,2560},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},
+{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,40},{7,6,16},
+{9,9,896},{7,4,6},{7,7,19},{7,5,8},{7,8,56},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,46},{7,4,3},{7,5,11},{7,4,5},{7,8,54},{7,5,9},{9,8,512},{7,4,6},{7,8,36},{9,5,128},
+{7,8,52},{7,6,15},{7,8,0},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1728},{7,4,5},
+{7,8,44},{7,6,17},{9,9,1408},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,30},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,8,34},{9,5,128},{7,8,50},{7,6,14},{7,8,62},{7,4,4},{7,4,2},{7,4,7},{7,8,48},{7,4,3},
+{7,8,60},{7,4,5},{7,8,42},{7,6,16},{9,9,1152},{7,4,6},{7,8,32},{7,5,8},{7,8,58},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},
+{9,8,640},{7,4,6},{7,8,38},{9,5,128},{7,7,25},{7,6,15},{9,8,384},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7}
+};
+ const TIFFFaxTabEnt TIFFFaxBlackTable[8192] = {
+{12,11,0},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,8,13},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,9,15},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,10,18},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,10,17},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{11,11,1792},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,11,23},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,11,20},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,11,25},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,14},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{0,0,0},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,13},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{10,12,128},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,12,56},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,12,30},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{11,11,1856},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,57},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,11,21},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,54},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,8,14},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{0,0,0},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,13},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,9,15},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,52},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,48},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{11,12,2112},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,12,44},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,36},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{10,12,384},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,14},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{0,0,0},{8,2,3},
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+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,41},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{11,12,2432},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,10,16},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,10,0},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{10,10,64},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,14},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{0,0,0},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,8,13},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,9,15},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,10,18},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,10,17},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{11,12,2048},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,51},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,35},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{10,12,320},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,8,14},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{0,0,0},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,13},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,12,27},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,59},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,12,33},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{11,11,1920},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{10,12,256},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,12,43},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{10,13,1216},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,14},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{0,0,0},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,8,13},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,9,15},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,55},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,63},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{11,12,2304},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,12,47},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,39},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,12,53},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,14},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{0,0,0},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,13},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,11,19},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,11,24},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,11,22},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{11,12,2560},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,10,16},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,10,0},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{10,10,64},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,8,14},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2}
+};
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_flush.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_flush.c
new file mode 100644
index 0000000..075b3bc
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_flush.c
@@ -0,0 +1,121 @@
+/* $Id: tif_flush.c,v 1.9 2010-03-31 06:40:10 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+int
+TIFFFlush(TIFF* tif)
+{
+ if( tif->tif_mode == O_RDONLY )
+ return 1;
+
+ if (!TIFFFlushData(tif))
+ return (0);
+
+ /* In update (r+) mode we try to detect the case where
+ only the strip/tile map has been altered, and we try to
+ rewrite only that portion of the directory without
+ making any other changes */
+
+ if( (tif->tif_flags & TIFF_DIRTYSTRIP)
+ && !(tif->tif_flags & TIFF_DIRTYDIRECT)
+ && tif->tif_mode == O_RDWR )
+ {
+ uint64 *offsets=NULL, *sizes=NULL;
+
+ if( TIFFIsTiled(tif) )
+ {
+ if( TIFFGetField( tif, TIFFTAG_TILEOFFSETS, &offsets )
+ && TIFFGetField( tif, TIFFTAG_TILEBYTECOUNTS, &sizes )
+ && _TIFFRewriteField( tif, TIFFTAG_TILEOFFSETS, TIFF_LONG8,
+ tif->tif_dir.td_nstrips, offsets )
+ && _TIFFRewriteField( tif, TIFFTAG_TILEBYTECOUNTS, TIFF_LONG8,
+ tif->tif_dir.td_nstrips, sizes ) )
+ {
+ tif->tif_flags &= ~TIFF_DIRTYSTRIP;
+ tif->tif_flags &= ~TIFF_BEENWRITING;
+ return 1;
+ }
+ }
+ else
+ {
+ if( TIFFGetField( tif, TIFFTAG_STRIPOFFSETS, &offsets )
+ && TIFFGetField( tif, TIFFTAG_STRIPBYTECOUNTS, &sizes )
+ && _TIFFRewriteField( tif, TIFFTAG_STRIPOFFSETS, TIFF_LONG8,
+ tif->tif_dir.td_nstrips, offsets )
+ && _TIFFRewriteField( tif, TIFFTAG_STRIPBYTECOUNTS, TIFF_LONG8,
+ tif->tif_dir.td_nstrips, sizes ) )
+ {
+ tif->tif_flags &= ~TIFF_DIRTYSTRIP;
+ tif->tif_flags &= ~TIFF_BEENWRITING;
+ return 1;
+ }
+ }
+ }
+
+ if ((tif->tif_flags & (TIFF_DIRTYDIRECT|TIFF_DIRTYSTRIP))
+ && !TIFFRewriteDirectory(tif))
+ return (0);
+
+ return (1);
+}
+
+/*
+ * Flush buffered data to the file.
+ *
+ * Frank Warmerdam'2000: I modified this to return 1 if TIFF_BEENWRITING
+ * is not set, so that TIFFFlush() will proceed to write out the directory.
+ * The documentation says returning 1 is an error indicator, but not having
+ * been writing isn't exactly a an error. Hopefully this doesn't cause
+ * problems for other people.
+ */
+int
+TIFFFlushData(TIFF* tif)
+{
+ if ((tif->tif_flags & TIFF_BEENWRITING) == 0)
+ return (1);
+ if (tif->tif_flags & TIFF_POSTENCODE) {
+ tif->tif_flags &= ~TIFF_POSTENCODE;
+ if (!(*tif->tif_postencode)(tif))
+ return (0);
+ }
+ return (TIFFFlushData1(tif));
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_getimage.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_getimage.c
new file mode 100644
index 0000000..a5d7a44
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_getimage.c
@@ -0,0 +1,2991 @@
+/* $Id: tif_getimage.c,v 1.82 2012-06-06 00:17:49 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1991-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library
+ *
+ * Read and return a packed RGBA image.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include <stdio.h>
+
+static int gtTileContig(TIFFRGBAImage*, uint32*, uint32, uint32);
+static int gtTileSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
+static int gtStripContig(TIFFRGBAImage*, uint32*, uint32, uint32);
+static int gtStripSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
+static int PickContigCase(TIFFRGBAImage*);
+static int PickSeparateCase(TIFFRGBAImage*);
+
+static int BuildMapUaToAa(TIFFRGBAImage* img);
+static int BuildMapBitdepth16To8(TIFFRGBAImage* img);
+
+static const char photoTag[] = "PhotometricInterpretation";
+
+/*
+ * Helper constants used in Orientation tag handling
+ */
+#define FLIP_VERTICALLY 0x01
+#define FLIP_HORIZONTALLY 0x02
+
+/*
+ * Color conversion constants. We will define display types here.
+ */
+
+static const TIFFDisplay display_sRGB = {
+ { /* XYZ -> luminance matrix */
+ { 3.2410F, -1.5374F, -0.4986F },
+ { -0.9692F, 1.8760F, 0.0416F },
+ { 0.0556F, -0.2040F, 1.0570F }
+ },
+ 100.0F, 100.0F, 100.0F, /* Light o/p for reference white */
+ 255, 255, 255, /* Pixel values for ref. white */
+ 1.0F, 1.0F, 1.0F, /* Residual light o/p for black pixel */
+ 2.4F, 2.4F, 2.4F, /* Gamma values for the three guns */
+};
+
+/*
+ * Check the image to see if TIFFReadRGBAImage can deal with it.
+ * 1/0 is returned according to whether or not the image can
+ * be handled. If 0 is returned, emsg contains the reason
+ * why it is being rejected.
+ */
+int
+TIFFRGBAImageOK(TIFF* tif, char emsg[1024])
+{
+ TIFFDirectory* td = &tif->tif_dir;
+ uint16 photometric;
+ int colorchannels;
+
+ if (!tif->tif_decodestatus) {
+ sprintf(emsg, "Sorry, requested compression method is not configured");
+ return (0);
+ }
+ switch (td->td_bitspersample) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ case 16:
+ break;
+ default:
+ sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
+ td->td_bitspersample);
+ return (0);
+ }
+ colorchannels = td->td_samplesperpixel - td->td_extrasamples;
+ if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric)) {
+ switch (colorchannels) {
+ case 1:
+ photometric = PHOTOMETRIC_MINISBLACK;
+ break;
+ case 3:
+ photometric = PHOTOMETRIC_RGB;
+ break;
+ default:
+ sprintf(emsg, "Missing needed %s tag", photoTag);
+ return (0);
+ }
+ }
+ switch (photometric) {
+ case PHOTOMETRIC_MINISWHITE:
+ case PHOTOMETRIC_MINISBLACK:
+ case PHOTOMETRIC_PALETTE:
+ if (td->td_planarconfig == PLANARCONFIG_CONTIG
+ && td->td_samplesperpixel != 1
+ && td->td_bitspersample < 8 ) {
+ sprintf(emsg,
+ "Sorry, can not handle contiguous data with %s=%d, "
+ "and %s=%d and Bits/Sample=%d",
+ photoTag, photometric,
+ "Samples/pixel", td->td_samplesperpixel,
+ td->td_bitspersample);
+ return (0);
+ }
+ /*
+ * We should likely validate that any extra samples are either
+ * to be ignored, or are alpha, and if alpha we should try to use
+ * them. But for now we won't bother with this.
+ */
+ break;
+ case PHOTOMETRIC_YCBCR:
+ /*
+ * TODO: if at all meaningful and useful, make more complete
+ * support check here, or better still, refactor to let supporting
+ * code decide whether there is support and what meaningfull
+ * error to return
+ */
+ break;
+ case PHOTOMETRIC_RGB:
+ if (colorchannels < 3) {
+ sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
+ "Color channels", colorchannels);
+ return (0);
+ }
+ break;
+ case PHOTOMETRIC_SEPARATED:
+ {
+ uint16 inkset;
+ TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset);
+ if (inkset != INKSET_CMYK) {
+ sprintf(emsg,
+ "Sorry, can not handle separated image with %s=%d",
+ "InkSet", inkset);
+ return 0;
+ }
+ if (td->td_samplesperpixel < 4) {
+ sprintf(emsg,
+ "Sorry, can not handle separated image with %s=%d",
+ "Samples/pixel", td->td_samplesperpixel);
+ return 0;
+ }
+ break;
+ }
+ case PHOTOMETRIC_LOGL:
+ if (td->td_compression != COMPRESSION_SGILOG) {
+ sprintf(emsg, "Sorry, LogL data must have %s=%d",
+ "Compression", COMPRESSION_SGILOG);
+ return (0);
+ }
+ break;
+ case PHOTOMETRIC_LOGLUV:
+ if (td->td_compression != COMPRESSION_SGILOG &&
+ td->td_compression != COMPRESSION_SGILOG24) {
+ sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d",
+ "Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24);
+ return (0);
+ }
+ if (td->td_planarconfig != PLANARCONFIG_CONTIG) {
+ sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d",
+ "Planarconfiguration", td->td_planarconfig);
+ return (0);
+ }
+ break;
+ case PHOTOMETRIC_CIELAB:
+ break;
+ default:
+ sprintf(emsg, "Sorry, can not handle image with %s=%d",
+ photoTag, photometric);
+ return (0);
+ }
+ return (1);
+}
+
+void
+TIFFRGBAImageEnd(TIFFRGBAImage* img)
+{
+ if (img->Map)
+ _TIFFfree(img->Map), img->Map = NULL;
+ if (img->BWmap)
+ _TIFFfree(img->BWmap), img->BWmap = NULL;
+ if (img->PALmap)
+ _TIFFfree(img->PALmap), img->PALmap = NULL;
+ if (img->ycbcr)
+ _TIFFfree(img->ycbcr), img->ycbcr = NULL;
+ if (img->cielab)
+ _TIFFfree(img->cielab), img->cielab = NULL;
+ if (img->UaToAa)
+ _TIFFfree(img->UaToAa), img->UaToAa = NULL;
+ if (img->Bitdepth16To8)
+ _TIFFfree(img->Bitdepth16To8), img->Bitdepth16To8 = NULL;
+
+ if( img->redcmap ) {
+ _TIFFfree( img->redcmap );
+ _TIFFfree( img->greencmap );
+ _TIFFfree( img->bluecmap );
+ img->redcmap = img->greencmap = img->bluecmap = NULL;
+ }
+}
+
+static int
+isCCITTCompression(TIFF* tif)
+{
+ uint16 compress;
+ TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
+ return (compress == COMPRESSION_CCITTFAX3 ||
+ compress == COMPRESSION_CCITTFAX4 ||
+ compress == COMPRESSION_CCITTRLE ||
+ compress == COMPRESSION_CCITTRLEW);
+}
+
+int
+TIFFRGBAImageBegin(TIFFRGBAImage* img, TIFF* tif, int stop, char emsg[1024])
+{
+ uint16* sampleinfo;
+ uint16 extrasamples;
+ uint16 planarconfig;
+ uint16 compress;
+ int colorchannels;
+ uint16 *red_orig, *green_orig, *blue_orig;
+ int n_color;
+
+ /* Initialize to normal values */
+ img->row_offset = 0;
+ img->col_offset = 0;
+ img->redcmap = NULL;
+ img->greencmap = NULL;
+ img->bluecmap = NULL;
+ img->req_orientation = ORIENTATION_BOTLEFT; /* It is the default */
+
+ img->tif = tif;
+ img->stoponerr = stop;
+ TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample);
+ switch (img->bitspersample) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ case 16:
+ break;
+ default:
+ sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
+ img->bitspersample);
+ goto fail_return;
+ }
+ img->alpha = 0;
+ TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &img->samplesperpixel);
+ TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
+ &extrasamples, &sampleinfo);
+ if (extrasamples >= 1)
+ {
+ switch (sampleinfo[0]) {
+ case EXTRASAMPLE_UNSPECIFIED: /* Workaround for some images without */
+ if (img->samplesperpixel > 3) /* correct info about alpha channel */
+ img->alpha = EXTRASAMPLE_ASSOCALPHA;
+ break;
+ case EXTRASAMPLE_ASSOCALPHA: /* data is pre-multiplied */
+ case EXTRASAMPLE_UNASSALPHA: /* data is not pre-multiplied */
+ img->alpha = sampleinfo[0];
+ break;
+ }
+ }
+
+#ifdef DEFAULT_EXTRASAMPLE_AS_ALPHA
+ if( !TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric))
+ img->photometric = PHOTOMETRIC_MINISWHITE;
+
+ if( extrasamples == 0
+ && img->samplesperpixel == 4
+ && img->photometric == PHOTOMETRIC_RGB )
+ {
+ img->alpha = EXTRASAMPLE_ASSOCALPHA;
+ extrasamples = 1;
+ }
+#endif
+
+ colorchannels = img->samplesperpixel - extrasamples;
+ TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &compress);
+ TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &planarconfig);
+ if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) {
+ switch (colorchannels) {
+ case 1:
+ if (isCCITTCompression(tif))
+ img->photometric = PHOTOMETRIC_MINISWHITE;
+ else
+ img->photometric = PHOTOMETRIC_MINISBLACK;
+ break;
+ case 3:
+ img->photometric = PHOTOMETRIC_RGB;
+ break;
+ default:
+ sprintf(emsg, "Missing needed %s tag", photoTag);
+ goto fail_return;
+ }
+ }
+ switch (img->photometric) {
+ case PHOTOMETRIC_PALETTE:
+ if (!TIFFGetField(tif, TIFFTAG_COLORMAP,
+ &red_orig, &green_orig, &blue_orig)) {
+ sprintf(emsg, "Missing required \"Colormap\" tag");
+ goto fail_return;
+ }
+
+ /* copy the colormaps so we can modify them */
+ n_color = (1L << img->bitspersample);
+ img->redcmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
+ img->greencmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
+ img->bluecmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
+ if( !img->redcmap || !img->greencmap || !img->bluecmap ) {
+ sprintf(emsg, "Out of memory for colormap copy");
+ goto fail_return;
+ }
+
+ _TIFFmemcpy( img->redcmap, red_orig, n_color * 2 );
+ _TIFFmemcpy( img->greencmap, green_orig, n_color * 2 );
+ _TIFFmemcpy( img->bluecmap, blue_orig, n_color * 2 );
+
+ /* fall thru... */
+ case PHOTOMETRIC_MINISWHITE:
+ case PHOTOMETRIC_MINISBLACK:
+ if (planarconfig == PLANARCONFIG_CONTIG
+ && img->samplesperpixel != 1
+ && img->bitspersample < 8 ) {
+ sprintf(emsg,
+ "Sorry, can not handle contiguous data with %s=%d, "
+ "and %s=%d and Bits/Sample=%d",
+ photoTag, img->photometric,
+ "Samples/pixel", img->samplesperpixel,
+ img->bitspersample);
+ goto fail_return;
+ }
+ break;
+ case PHOTOMETRIC_YCBCR:
+ /* It would probably be nice to have a reality check here. */
+ if (planarconfig == PLANARCONFIG_CONTIG)
+ /* can rely on libjpeg to convert to RGB */
+ /* XXX should restore current state on exit */
+ switch (compress) {
+ case COMPRESSION_JPEG:
+ /*
+ * TODO: when complete tests verify complete desubsampling
+ * and YCbCr handling, remove use of TIFFTAG_JPEGCOLORMODE in
+ * favor of tif_getimage.c native handling
+ */
+ TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
+ img->photometric = PHOTOMETRIC_RGB;
+ break;
+ default:
+ /* do nothing */;
+ break;
+ }
+ /*
+ * TODO: if at all meaningful and useful, make more complete
+ * support check here, or better still, refactor to let supporting
+ * code decide whether there is support and what meaningfull
+ * error to return
+ */
+ break;
+ case PHOTOMETRIC_RGB:
+ if (colorchannels < 3) {
+ sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
+ "Color channels", colorchannels);
+ goto fail_return;
+ }
+ break;
+ case PHOTOMETRIC_SEPARATED:
+ {
+ uint16 inkset;
+ TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset);
+ if (inkset != INKSET_CMYK) {
+ sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
+ "InkSet", inkset);
+ goto fail_return;
+ }
+ if (img->samplesperpixel < 4) {
+ sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
+ "Samples/pixel", img->samplesperpixel);
+ goto fail_return;
+ }
+ }
+ break;
+ case PHOTOMETRIC_LOGL:
+ if (compress != COMPRESSION_SGILOG) {
+ sprintf(emsg, "Sorry, LogL data must have %s=%d",
+ "Compression", COMPRESSION_SGILOG);
+ goto fail_return;
+ }
+ TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
+ img->photometric = PHOTOMETRIC_MINISBLACK; /* little white lie */
+ img->bitspersample = 8;
+ break;
+ case PHOTOMETRIC_LOGLUV:
+ if (compress != COMPRESSION_SGILOG && compress != COMPRESSION_SGILOG24) {
+ sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d",
+ "Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24);
+ goto fail_return;
+ }
+ if (planarconfig != PLANARCONFIG_CONTIG) {
+ sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d",
+ "Planarconfiguration", planarconfig);
+ return (0);
+ }
+ TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
+ img->photometric = PHOTOMETRIC_RGB; /* little white lie */
+ img->bitspersample = 8;
+ break;
+ case PHOTOMETRIC_CIELAB:
+ break;
+ default:
+ sprintf(emsg, "Sorry, can not handle image with %s=%d",
+ photoTag, img->photometric);
+ goto fail_return;
+ }
+ img->Map = NULL;
+ img->BWmap = NULL;
+ img->PALmap = NULL;
+ img->ycbcr = NULL;
+ img->cielab = NULL;
+ img->UaToAa = NULL;
+ img->Bitdepth16To8 = NULL;
+ TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &img->width);
+ TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &img->height);
+ TIFFGetFieldDefaulted(tif, TIFFTAG_ORIENTATION, &img->orientation);
+ img->isContig =
+ !(planarconfig == PLANARCONFIG_SEPARATE && img->samplesperpixel > 1);
+ if (img->isContig) {
+ if (!PickContigCase(img)) {
+ sprintf(emsg, "Sorry, can not handle image");
+ goto fail_return;
+ }
+ } else {
+ if (!PickSeparateCase(img)) {
+ sprintf(emsg, "Sorry, can not handle image");
+ goto fail_return;
+ }
+ }
+ return 1;
+
+ fail_return:
+ _TIFFfree( img->redcmap );
+ _TIFFfree( img->greencmap );
+ _TIFFfree( img->bluecmap );
+ img->redcmap = img->greencmap = img->bluecmap = NULL;
+ return 0;
+}
+
+int
+TIFFRGBAImageGet(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+ if (img->get == NULL) {
+ TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No \"get\" routine setup");
+ return (0);
+ }
+ if (img->put.any == NULL) {
+ TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif),
+ "No \"put\" routine setupl; probably can not handle image format");
+ return (0);
+ }
+ return (*img->get)(img, raster, w, h);
+}
+
+/*
+ * Read the specified image into an ABGR-format rastertaking in account
+ * specified orientation.
+ */
+int
+TIFFReadRGBAImageOriented(TIFF* tif,
+ uint32 rwidth, uint32 rheight, uint32* raster,
+ int orientation, int stop)
+{
+ char emsg[1024] = "";
+ TIFFRGBAImage img;
+ int ok;
+
+ if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, stop, emsg)) {
+ img.req_orientation = orientation;
+ /* XXX verify rwidth and rheight against width and height */
+ ok = TIFFRGBAImageGet(&img, raster+(rheight-img.height)*rwidth,
+ rwidth, img.height);
+ TIFFRGBAImageEnd(&img);
+ } else {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg);
+ ok = 0;
+ }
+ return (ok);
+}
+
+/*
+ * Read the specified image into an ABGR-format raster. Use bottom left
+ * origin for raster by default.
+ */
+int
+TIFFReadRGBAImage(TIFF* tif,
+ uint32 rwidth, uint32 rheight, uint32* raster, int stop)
+{
+ return TIFFReadRGBAImageOriented(tif, rwidth, rheight, raster,
+ ORIENTATION_BOTLEFT, stop);
+}
+
+static int
+setorientation(TIFFRGBAImage* img)
+{
+ switch (img->orientation) {
+ case ORIENTATION_TOPLEFT:
+ case ORIENTATION_LEFTTOP:
+ if (img->req_orientation == ORIENTATION_TOPRIGHT ||
+ img->req_orientation == ORIENTATION_RIGHTTOP)
+ return FLIP_HORIZONTALLY;
+ else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
+ img->req_orientation == ORIENTATION_RIGHTBOT)
+ return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
+ else if (img->req_orientation == ORIENTATION_BOTLEFT ||
+ img->req_orientation == ORIENTATION_LEFTBOT)
+ return FLIP_VERTICALLY;
+ else
+ return 0;
+ case ORIENTATION_TOPRIGHT:
+ case ORIENTATION_RIGHTTOP:
+ if (img->req_orientation == ORIENTATION_TOPLEFT ||
+ img->req_orientation == ORIENTATION_LEFTTOP)
+ return FLIP_HORIZONTALLY;
+ else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
+ img->req_orientation == ORIENTATION_RIGHTBOT)
+ return FLIP_VERTICALLY;
+ else if (img->req_orientation == ORIENTATION_BOTLEFT ||
+ img->req_orientation == ORIENTATION_LEFTBOT)
+ return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
+ else
+ return 0;
+ case ORIENTATION_BOTRIGHT:
+ case ORIENTATION_RIGHTBOT:
+ if (img->req_orientation == ORIENTATION_TOPLEFT ||
+ img->req_orientation == ORIENTATION_LEFTTOP)
+ return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
+ else if (img->req_orientation == ORIENTATION_TOPRIGHT ||
+ img->req_orientation == ORIENTATION_RIGHTTOP)
+ return FLIP_VERTICALLY;
+ else if (img->req_orientation == ORIENTATION_BOTLEFT ||
+ img->req_orientation == ORIENTATION_LEFTBOT)
+ return FLIP_HORIZONTALLY;
+ else
+ return 0;
+ case ORIENTATION_BOTLEFT:
+ case ORIENTATION_LEFTBOT:
+ if (img->req_orientation == ORIENTATION_TOPLEFT ||
+ img->req_orientation == ORIENTATION_LEFTTOP)
+ return FLIP_VERTICALLY;
+ else if (img->req_orientation == ORIENTATION_TOPRIGHT ||
+ img->req_orientation == ORIENTATION_RIGHTTOP)
+ return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
+ else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
+ img->req_orientation == ORIENTATION_RIGHTBOT)
+ return FLIP_HORIZONTALLY;
+ else
+ return 0;
+ default: /* NOTREACHED */
+ return 0;
+ }
+}
+
+/*
+ * Get an tile-organized image that has
+ * PlanarConfiguration contiguous if SamplesPerPixel > 1
+ * or
+ * SamplesPerPixel == 1
+ */
+static int
+gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+ TIFF* tif = img->tif;
+ tileContigRoutine put = img->put.contig;
+ uint32 col, row, y, rowstoread;
+ tmsize_t pos;
+ uint32 tw, th;
+ unsigned char* buf;
+ int32 fromskew, toskew;
+ uint32 nrow;
+ int ret = 1, flip;
+
+ buf = (unsigned char*) _TIFFmalloc(TIFFTileSize(tif));
+ if (buf == 0) {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer");
+ return (0);
+ }
+ _TIFFmemset(buf, 0, TIFFTileSize(tif));
+ TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
+ TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
+
+ flip = setorientation(img);
+ if (flip & FLIP_VERTICALLY) {
+ y = h - 1;
+ toskew = -(int32)(tw + w);
+ }
+ else {
+ y = 0;
+ toskew = -(int32)(tw - w);
+ }
+
+ for (row = 0; row < h; row += nrow)
+ {
+ rowstoread = th - (row + img->row_offset) % th;
+ nrow = (row + rowstoread > h ? h - row : rowstoread);
+ for (col = 0; col < w; col += tw)
+ {
+ if (TIFFReadTile(tif, buf, col+img->col_offset,
+ row+img->row_offset, 0, 0)==(tmsize_t)(-1) && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+
+ pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif);
+
+ if (col + tw > w)
+ {
+ /*
+ * Tile is clipped horizontally. Calculate
+ * visible portion and skewing factors.
+ */
+ uint32 npix = w - col;
+ fromskew = tw - npix;
+ (*put)(img, raster+y*w+col, col, y,
+ npix, nrow, fromskew, toskew + fromskew, buf + pos);
+ }
+ else
+ {
+ (*put)(img, raster+y*w+col, col, y, tw, nrow, 0, toskew, buf + pos);
+ }
+ }
+
+ y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
+ }
+ _TIFFfree(buf);
+
+ if (flip & FLIP_HORIZONTALLY) {
+ uint32 line;
+
+ for (line = 0; line < h; line++) {
+ uint32 *left = raster + (line * w);
+ uint32 *right = left + w - 1;
+
+ while ( left < right ) {
+ uint32 temp = *left;
+ *left = *right;
+ *right = temp;
+ left++, right--;
+ }
+ }
+ }
+
+ return (ret);
+}
+
+/*
+ * Get an tile-organized image that has
+ * SamplesPerPixel > 1
+ * PlanarConfiguration separated
+ * We assume that all such images are RGB.
+ */
+static int
+gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+ TIFF* tif = img->tif;
+ tileSeparateRoutine put = img->put.separate;
+ uint32 col, row, y, rowstoread;
+ tmsize_t pos;
+ uint32 tw, th;
+ unsigned char* buf;
+ unsigned char* p0;
+ unsigned char* p1;
+ unsigned char* p2;
+ unsigned char* pa;
+ tmsize_t tilesize;
+ tmsize_t bufsize;
+ int32 fromskew, toskew;
+ int alpha = img->alpha;
+ uint32 nrow;
+ int ret = 1, flip;
+ int colorchannels;
+
+ tilesize = TIFFTileSize(tif);
+ bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,tilesize);
+ if (bufsize == 0) {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtTileSeparate");
+ return (0);
+ }
+ buf = (unsigned char*) _TIFFmalloc(bufsize);
+ if (buf == 0) {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer");
+ return (0);
+ }
+ _TIFFmemset(buf, 0, bufsize);
+ p0 = buf;
+ p1 = p0 + tilesize;
+ p2 = p1 + tilesize;
+ pa = (alpha?(p2+tilesize):NULL);
+ TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
+ TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
+
+ flip = setorientation(img);
+ if (flip & FLIP_VERTICALLY) {
+ y = h - 1;
+ toskew = -(int32)(tw + w);
+ }
+ else {
+ y = 0;
+ toskew = -(int32)(tw - w);
+ }
+
+ switch( img->photometric )
+ {
+ case PHOTOMETRIC_MINISWHITE:
+ case PHOTOMETRIC_MINISBLACK:
+ case PHOTOMETRIC_PALETTE:
+ colorchannels = 1;
+ p2 = p1 = p0;
+ break;
+
+ default:
+ colorchannels = 3;
+ break;
+ }
+
+ for (row = 0; row < h; row += nrow)
+ {
+ rowstoread = th - (row + img->row_offset) % th;
+ nrow = (row + rowstoread > h ? h - row : rowstoread);
+ for (col = 0; col < w; col += tw)
+ {
+ if (TIFFReadTile(tif, p0, col+img->col_offset,
+ row+img->row_offset,0,0)==(tmsize_t)(-1) && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+ if (colorchannels > 1
+ && TIFFReadTile(tif, p1, col+img->col_offset,
+ row+img->row_offset,0,1) == (tmsize_t)(-1)
+ && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+ if (colorchannels > 1
+ && TIFFReadTile(tif, p2, col+img->col_offset,
+ row+img->row_offset,0,2) == (tmsize_t)(-1)
+ && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+ if (alpha
+ && TIFFReadTile(tif,pa,col+img->col_offset,
+ row+img->row_offset,0,colorchannels) == (tmsize_t)(-1)
+ && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+
+ pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif);
+
+ if (col + tw > w)
+ {
+ /*
+ * Tile is clipped horizontally. Calculate
+ * visible portion and skewing factors.
+ */
+ uint32 npix = w - col;
+ fromskew = tw - npix;
+ (*put)(img, raster+y*w+col, col, y,
+ npix, nrow, fromskew, toskew + fromskew,
+ p0 + pos, p1 + pos, p2 + pos, (alpha?(pa+pos):NULL));
+ } else {
+ (*put)(img, raster+y*w+col, col, y,
+ tw, nrow, 0, toskew, p0 + pos, p1 + pos, p2 + pos, (alpha?(pa+pos):NULL));
+ }
+ }
+
+ y += (flip & FLIP_VERTICALLY ?-(int32) nrow : (int32) nrow);
+ }
+
+ if (flip & FLIP_HORIZONTALLY) {
+ uint32 line;
+
+ for (line = 0; line < h; line++) {
+ uint32 *left = raster + (line * w);
+ uint32 *right = left + w - 1;
+
+ while ( left < right ) {
+ uint32 temp = *left;
+ *left = *right;
+ *right = temp;
+ left++, right--;
+ }
+ }
+ }
+
+ _TIFFfree(buf);
+ return (ret);
+}
+
+/*
+ * Get a strip-organized image that has
+ * PlanarConfiguration contiguous if SamplesPerPixel > 1
+ * or
+ * SamplesPerPixel == 1
+ */
+static int
+gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+ TIFF* tif = img->tif;
+ tileContigRoutine put = img->put.contig;
+ uint32 row, y, nrow, nrowsub, rowstoread;
+ tmsize_t pos;
+ unsigned char* buf;
+ uint32 rowsperstrip;
+ uint16 subsamplinghor,subsamplingver;
+ uint32 imagewidth = img->width;
+ tmsize_t scanline;
+ int32 fromskew, toskew;
+ int ret = 1, flip;
+
+ buf = (unsigned char*) _TIFFmalloc(TIFFStripSize(tif));
+ if (buf == 0) {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer");
+ return (0);
+ }
+ _TIFFmemset(buf, 0, TIFFStripSize(tif));
+
+ flip = setorientation(img);
+ if (flip & FLIP_VERTICALLY) {
+ y = h - 1;
+ toskew = -(int32)(w + w);
+ } else {
+ y = 0;
+ toskew = -(int32)(w - w);
+ }
+
+ TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
+ TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING, &subsamplinghor, &subsamplingver);
+ scanline = TIFFScanlineSize(tif);
+ fromskew = (w < imagewidth ? imagewidth - w : 0);
+ for (row = 0; row < h; row += nrow)
+ {
+ rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
+ nrow = (row + rowstoread > h ? h - row : rowstoread);
+ nrowsub = nrow;
+ if ((nrowsub%subsamplingver)!=0)
+ nrowsub+=subsamplingver-nrowsub%subsamplingver;
+ if (TIFFReadEncodedStrip(tif,
+ TIFFComputeStrip(tif,row+img->row_offset, 0),
+ buf,
+ ((row + img->row_offset)%rowsperstrip + nrowsub) * scanline)==(tmsize_t)(-1)
+ && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+
+ pos = ((row + img->row_offset) % rowsperstrip) * scanline;
+ (*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, buf + pos);
+ y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
+ }
+
+ if (flip & FLIP_HORIZONTALLY) {
+ uint32 line;
+
+ for (line = 0; line < h; line++) {
+ uint32 *left = raster + (line * w);
+ uint32 *right = left + w - 1;
+
+ while ( left < right ) {
+ uint32 temp = *left;
+ *left = *right;
+ *right = temp;
+ left++, right--;
+ }
+ }
+ }
+
+ _TIFFfree(buf);
+ return (ret);
+}
+
+/*
+ * Get a strip-organized image with
+ * SamplesPerPixel > 1
+ * PlanarConfiguration separated
+ * We assume that all such images are RGB.
+ */
+static int
+gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+ TIFF* tif = img->tif;
+ tileSeparateRoutine put = img->put.separate;
+ unsigned char *buf;
+ unsigned char *p0, *p1, *p2, *pa;
+ uint32 row, y, nrow, rowstoread;
+ tmsize_t pos;
+ tmsize_t scanline;
+ uint32 rowsperstrip, offset_row;
+ uint32 imagewidth = img->width;
+ tmsize_t stripsize;
+ tmsize_t bufsize;
+ int32 fromskew, toskew;
+ int alpha = img->alpha;
+ int ret = 1, flip, colorchannels;
+
+ stripsize = TIFFStripSize(tif);
+ bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,stripsize);
+ if (bufsize == 0) {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtStripSeparate");
+ return (0);
+ }
+ p0 = buf = (unsigned char *)_TIFFmalloc(bufsize);
+ if (buf == 0) {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer");
+ return (0);
+ }
+ _TIFFmemset(buf, 0, bufsize);
+ p1 = p0 + stripsize;
+ p2 = p1 + stripsize;
+ pa = (alpha?(p2+stripsize):NULL);
+
+ flip = setorientation(img);
+ if (flip & FLIP_VERTICALLY) {
+ y = h - 1;
+ toskew = -(int32)(w + w);
+ }
+ else {
+ y = 0;
+ toskew = -(int32)(w - w);
+ }
+
+ switch( img->photometric )
+ {
+ case PHOTOMETRIC_MINISWHITE:
+ case PHOTOMETRIC_MINISBLACK:
+ case PHOTOMETRIC_PALETTE:
+ colorchannels = 1;
+ p2 = p1 = p0;
+ break;
+
+ default:
+ colorchannels = 3;
+ break;
+ }
+
+ TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
+ scanline = TIFFScanlineSize(tif);
+ fromskew = (w < imagewidth ? imagewidth - w : 0);
+ for (row = 0; row < h; row += nrow)
+ {
+ rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
+ nrow = (row + rowstoread > h ? h - row : rowstoread);
+ offset_row = row + img->row_offset;
+ if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0),
+ p0, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
+ && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+ if (colorchannels > 1
+ && TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 1),
+ p1, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) == (tmsize_t)(-1)
+ && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+ if (colorchannels > 1
+ && TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 2),
+ p2, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) == (tmsize_t)(-1)
+ && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+ if (alpha)
+ {
+ if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, colorchannels),
+ pa, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
+ && img->stoponerr)
+ {
+ ret = 0;
+ break;
+ }
+ }
+
+ pos = ((row + img->row_offset) % rowsperstrip) * scanline;
+ (*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, p0 + pos, p1 + pos,
+ p2 + pos, (alpha?(pa+pos):NULL));
+ y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
+ }
+
+ if (flip & FLIP_HORIZONTALLY) {
+ uint32 line;
+
+ for (line = 0; line < h; line++) {
+ uint32 *left = raster + (line * w);
+ uint32 *right = left + w - 1;
+
+ while ( left < right ) {
+ uint32 temp = *left;
+ *left = *right;
+ *right = temp;
+ left++, right--;
+ }
+ }
+ }
+
+ _TIFFfree(buf);
+ return (ret);
+}
+
+/*
+ * The following routines move decoded data returned
+ * from the TIFF library into rasters filled with packed
+ * ABGR pixels (i.e. suitable for passing to lrecwrite.)
+ *
+ * The routines have been created according to the most
+ * important cases and optimized. PickContigCase and
+ * PickSeparateCase analyze the parameters and select
+ * the appropriate "get" and "put" routine to use.
+ */
+#define REPEAT8(op) REPEAT4(op); REPEAT4(op)
+#define REPEAT4(op) REPEAT2(op); REPEAT2(op)
+#define REPEAT2(op) op; op
+#define CASE8(x,op) \
+ switch (x) { \
+ case 7: op; case 6: op; case 5: op; \
+ case 4: op; case 3: op; case 2: op; \
+ case 1: op; \
+ }
+#define CASE4(x,op) switch (x) { case 3: op; case 2: op; case 1: op; }
+#define NOP
+
+#define UNROLL8(w, op1, op2) { \
+ uint32 _x; \
+ for (_x = w; _x >= 8; _x -= 8) { \
+ op1; \
+ REPEAT8(op2); \
+ } \
+ if (_x > 0) { \
+ op1; \
+ CASE8(_x,op2); \
+ } \
+}
+#define UNROLL4(w, op1, op2) { \
+ uint32 _x; \
+ for (_x = w; _x >= 4; _x -= 4) { \
+ op1; \
+ REPEAT4(op2); \
+ } \
+ if (_x > 0) { \
+ op1; \
+ CASE4(_x,op2); \
+ } \
+}
+#define UNROLL2(w, op1, op2) { \
+ uint32 _x; \
+ for (_x = w; _x >= 2; _x -= 2) { \
+ op1; \
+ REPEAT2(op2); \
+ } \
+ if (_x) { \
+ op1; \
+ op2; \
+ } \
+}
+
+#define SKEW(r,g,b,skew) { r += skew; g += skew; b += skew; }
+#define SKEW4(r,g,b,a,skew) { r += skew; g += skew; b += skew; a+= skew; }
+
+#define A1 (((uint32)0xffL)<<24)
+#define PACK(r,g,b) \
+ ((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|A1)
+#define PACK4(r,g,b,a) \
+ ((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|((uint32)(a)<<24))
+#define W2B(v) (((v)>>8)&0xff)
+/* TODO: PACKW should have be made redundant in favor of Bitdepth16To8 LUT */
+#define PACKW(r,g,b) \
+ ((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|A1)
+#define PACKW4(r,g,b,a) \
+ ((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|((uint32)W2B(a)<<24))
+
+#define DECLAREContigPutFunc(name) \
+static void name(\
+ TIFFRGBAImage* img, \
+ uint32* cp, \
+ uint32 x, uint32 y, \
+ uint32 w, uint32 h, \
+ int32 fromskew, int32 toskew, \
+ unsigned char* pp \
+)
+
+/*
+ * 8-bit palette => colormap/RGB
+ */
+DECLAREContigPutFunc(put8bitcmaptile)
+{
+ uint32** PALmap = img->PALmap;
+ int samplesperpixel = img->samplesperpixel;
+
+ (void) y;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;)
+ {
+ *cp++ = PALmap[*pp][0];
+ pp += samplesperpixel;
+ }
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 4-bit palette => colormap/RGB
+ */
+DECLAREContigPutFunc(put4bitcmaptile)
+{
+ uint32** PALmap = img->PALmap;
+
+ (void) x; (void) y;
+ fromskew /= 2;
+ while (h-- > 0) {
+ uint32* bw;
+ UNROLL2(w, bw = PALmap[*pp++], *cp++ = *bw++);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 2-bit palette => colormap/RGB
+ */
+DECLAREContigPutFunc(put2bitcmaptile)
+{
+ uint32** PALmap = img->PALmap;
+
+ (void) x; (void) y;
+ fromskew /= 4;
+ while (h-- > 0) {
+ uint32* bw;
+ UNROLL4(w, bw = PALmap[*pp++], *cp++ = *bw++);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 1-bit palette => colormap/RGB
+ */
+DECLAREContigPutFunc(put1bitcmaptile)
+{
+ uint32** PALmap = img->PALmap;
+
+ (void) x; (void) y;
+ fromskew /= 8;
+ while (h-- > 0) {
+ uint32* bw;
+ UNROLL8(w, bw = PALmap[*pp++], *cp++ = *bw++);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 8-bit greyscale => colormap/RGB
+ */
+DECLAREContigPutFunc(putgreytile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint32** BWmap = img->BWmap;
+
+ (void) y;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;)
+ {
+ *cp++ = BWmap[*pp][0];
+ pp += samplesperpixel;
+ }
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 8-bit greyscale with associated alpha => colormap/RGBA
+ */
+DECLAREContigPutFunc(putagreytile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint32** BWmap = img->BWmap;
+
+ (void) y;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;)
+ {
+ *cp++ = BWmap[*pp][0] & (*(pp+1) << 24 | ~A1);
+ pp += samplesperpixel;
+ }
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 16-bit greyscale => colormap/RGB
+ */
+DECLAREContigPutFunc(put16bitbwtile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint32** BWmap = img->BWmap;
+
+ (void) y;
+ while (h-- > 0) {
+ uint16 *wp = (uint16 *) pp;
+
+ for (x = w; x-- > 0;)
+ {
+ /* use high order byte of 16bit value */
+
+ *cp++ = BWmap[*wp >> 8][0];
+ pp += 2 * samplesperpixel;
+ wp += samplesperpixel;
+ }
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 1-bit bilevel => colormap/RGB
+ */
+DECLAREContigPutFunc(put1bitbwtile)
+{
+ uint32** BWmap = img->BWmap;
+
+ (void) x; (void) y;
+ fromskew /= 8;
+ while (h-- > 0) {
+ uint32* bw;
+ UNROLL8(w, bw = BWmap[*pp++], *cp++ = *bw++);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 2-bit greyscale => colormap/RGB
+ */
+DECLAREContigPutFunc(put2bitbwtile)
+{
+ uint32** BWmap = img->BWmap;
+
+ (void) x; (void) y;
+ fromskew /= 4;
+ while (h-- > 0) {
+ uint32* bw;
+ UNROLL4(w, bw = BWmap[*pp++], *cp++ = *bw++);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 4-bit greyscale => colormap/RGB
+ */
+DECLAREContigPutFunc(put4bitbwtile)
+{
+ uint32** BWmap = img->BWmap;
+
+ (void) x; (void) y;
+ fromskew /= 2;
+ while (h-- > 0) {
+ uint32* bw;
+ UNROLL2(w, bw = BWmap[*pp++], *cp++ = *bw++);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 8-bit packed samples, no Map => RGB
+ */
+DECLAREContigPutFunc(putRGBcontig8bittile)
+{
+ int samplesperpixel = img->samplesperpixel;
+
+ (void) x; (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ UNROLL8(w, NOP,
+ *cp++ = PACK(pp[0], pp[1], pp[2]);
+ pp += samplesperpixel);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 8-bit packed samples => RGBA w/ associated alpha
+ * (known to have Map == NULL)
+ */
+DECLAREContigPutFunc(putRGBAAcontig8bittile)
+{
+ int samplesperpixel = img->samplesperpixel;
+
+ (void) x; (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ UNROLL8(w, NOP,
+ *cp++ = PACK4(pp[0], pp[1], pp[2], pp[3]);
+ pp += samplesperpixel);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 8-bit packed samples => RGBA w/ unassociated alpha
+ * (known to have Map == NULL)
+ */
+DECLAREContigPutFunc(putRGBUAcontig8bittile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ uint32 r, g, b, a;
+ uint8* m;
+ for (x = w; x-- > 0;) {
+ a = pp[3];
+ m = img->UaToAa+(a<<8);
+ r = m[pp[0]];
+ g = m[pp[1]];
+ b = m[pp[2]];
+ *cp++ = PACK4(r,g,b,a);
+ pp += samplesperpixel;
+ }
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 16-bit packed samples => RGB
+ */
+DECLAREContigPutFunc(putRGBcontig16bittile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint16 *wp = (uint16 *)pp;
+ (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;) {
+ *cp++ = PACK(img->Bitdepth16To8[wp[0]],
+ img->Bitdepth16To8[wp[1]],
+ img->Bitdepth16To8[wp[2]]);
+ wp += samplesperpixel;
+ }
+ cp += toskew;
+ wp += fromskew;
+ }
+}
+
+/*
+ * 16-bit packed samples => RGBA w/ associated alpha
+ * (known to have Map == NULL)
+ */
+DECLAREContigPutFunc(putRGBAAcontig16bittile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint16 *wp = (uint16 *)pp;
+ (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;) {
+ *cp++ = PACK4(img->Bitdepth16To8[wp[0]],
+ img->Bitdepth16To8[wp[1]],
+ img->Bitdepth16To8[wp[2]],
+ img->Bitdepth16To8[wp[3]]);
+ wp += samplesperpixel;
+ }
+ cp += toskew;
+ wp += fromskew;
+ }
+}
+
+/*
+ * 16-bit packed samples => RGBA w/ unassociated alpha
+ * (known to have Map == NULL)
+ */
+DECLAREContigPutFunc(putRGBUAcontig16bittile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint16 *wp = (uint16 *)pp;
+ (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ uint32 r,g,b,a;
+ uint8* m;
+ for (x = w; x-- > 0;) {
+ a = img->Bitdepth16To8[wp[3]];
+ m = img->UaToAa+(a<<8);
+ r = m[img->Bitdepth16To8[wp[0]]];
+ g = m[img->Bitdepth16To8[wp[1]]];
+ b = m[img->Bitdepth16To8[wp[2]]];
+ *cp++ = PACK4(r,g,b,a);
+ wp += samplesperpixel;
+ }
+ cp += toskew;
+ wp += fromskew;
+ }
+}
+
+/*
+ * 8-bit packed CMYK samples w/o Map => RGB
+ *
+ * NB: The conversion of CMYK->RGB is *very* crude.
+ */
+/*DECLAREContigPutFunc(putRGBcontig8bitCMYKtile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint16 r, g, b, k;
+
+ (void) x; (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ UNROLL8(w, NOP,
+ k = 255 - pp[3];
+ r = (k*(255-pp[0]))/255;
+ g = (k*(255-pp[1]))/255;
+ b = (k*(255-pp[2]))/255;
+ *cp++ = PACK(r, g, b);
+ pp += samplesperpixel);
+ cp += toskew;
+ pp += fromskew;
+}*/
+/* Modify in 20090723 by Sunliang.Liu */
+DECLAREContigPutFunc(putRGBcontig8bitCMYKtile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint8 r, g, b, k;
+
+ (void) x; (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ UNROLL8(w, NOP,
+ if(!TIFFCmyk2Rgb(img->tif->tif_clientdata,pp[0],pp[1],pp[2],pp[3],
+ &r,&g,&b)){
+ k = 255 - pp[3];
+ r = (k*(255-pp[0]))/255;
+ g = (k*(255-pp[1]))/255;
+ b = (k*(255-pp[2]))/255;
+ }
+
+ *cp++ = PACK(r, g, b);
+ pp += samplesperpixel);
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * 16-bit packed CMYK samples w/o Map => RGB(8-bit)
+ *
+ * NB: The conversion of CMYK->RGB is *very* crude.
+ */
+DECLAREContigPutFunc(putRGBcontig16bitCMYKtile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ uint16* wp = (uint16*)pp;
+ uint8 C, M, Y, K;
+ uint8 r, g, b;
+
+ (void) x; (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ UNROLL8(w, NOP,
+ C = wp[0]>>8;M = wp[1]>>8;Y = wp[2]>>8;K = wp[3]>>8;
+ if(!TIFFCmyk2Rgb(img->tif->tif_clientdata,C,M,Y,K,
+ &r,&g,&b)){
+ K = 255 - K;
+ r = (K*(255-C))/255;
+ g = (K*(255-M))/255;
+ b = (K*(255-Y))/255;
+ }
+
+ *cp++ = PACK(r, g, b);
+ wp += samplesperpixel);
+ cp += toskew;
+ wp += fromskew;
+ }
+}
+
+/*
+ * 8-bit packed CMYK samples w/Map => RGB
+ *
+ * NB: The conversion of CMYK->RGB is *very* crude.
+ */
+/*
+DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ TIFFRGBValue* Map = img->Map;
+ uint16 r, g, b, k;
+
+ (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;) {
+ k = 255 - pp[3];
+ r = (k*(255-pp[0]))/255;
+ g = (k*(255-pp[1]))/255;
+ b = (k*(255-pp[2]))/255;
+ *cp++ = PACK(Map[r], Map[g], Map[b]);
+ pp += samplesperpixel;
+ }
+ pp += fromskew;
+ cp += toskew;
+ }
+}*/
+/* Modify in 20090723 by Sunliang.Liu */
+DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ TIFFRGBValue* Map = img->Map;
+ uint8 r, g, b, k;
+
+ (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;) {
+ if(!TIFFCmyk2Rgb(img->tif->tif_clientdata,pp[0],pp[1],pp[2],pp[3],
+ &r,&g,&b)){
+ k = 255 - pp[3];
+ r = (k*(255-pp[0]))/255;
+ g = (k*(255-pp[1]))/255;
+ b = (k*(255-pp[2]))/255;
+ }
+ *cp++ = PACK(Map[r], Map[g], Map[b]);
+ pp += samplesperpixel;
+ }
+ pp += fromskew;
+ cp += toskew;
+ }
+}
+
+/*
+ * 16-bit packed CMYK samples w/Map => RGB(8-bit)
+ *
+ * NB: The conversion of CMYK->RGB is *very* crude.
+ */
+DECLAREContigPutFunc(putRGBcontig16bitCMYKMaptile)
+{
+ int samplesperpixel = img->samplesperpixel;
+ TIFFRGBValue* Map = img->Map;
+ uint16* wp = (uint16*)pp;
+ uint8 C, M, Y, K;
+ uint8 r, g, b;
+
+ (void) y;
+ fromskew *= samplesperpixel;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;) {
+ C = wp[0]>>8;M = wp[1]>>8;Y = wp[2]>>8;K = wp[3]>>8;
+ if(!TIFFCmyk2Rgb(img->tif->tif_clientdata,C,M,Y,K,
+ &r,&g,&b)){
+ K = 255 - K;
+ r = (K*(255-C))/255;
+ g = (K*(255-M))/255;
+ b = (K*(255-Y))/255;
+ }
+ *cp++ = PACK(Map[r], Map[g], Map[b]);
+ wp += samplesperpixel;
+ }
+ wp += fromskew;
+ cp += toskew;
+ }
+}
+
+#define DECLARESepPutFunc(name) \
+static void name(\
+ TIFFRGBAImage* img,\
+ uint32* cp,\
+ uint32 x, uint32 y, \
+ uint32 w, uint32 h,\
+ int32 fromskew, int32 toskew,\
+ unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a\
+)
+
+/*
+ * 8-bit unpacked samples => RGB
+ */
+DECLARESepPutFunc(putRGBseparate8bittile)
+{
+ (void) img; (void) x; (void) y; (void) a;
+ while (h-- > 0) {
+ UNROLL8(w, NOP, *cp++ = PACK(*r++, *g++, *b++));
+ SKEW(r, g, b, fromskew);
+ cp += toskew;
+ }
+}
+
+/*
+ * 8-bit unpacked samples => RGBA w/ associated alpha
+ */
+DECLARESepPutFunc(putRGBAAseparate8bittile)
+{
+ (void) img; (void) x; (void) y;
+ while (h-- > 0) {
+ UNROLL8(w, NOP, *cp++ = PACK4(*r++, *g++, *b++, *a++));
+ SKEW4(r, g, b, a, fromskew);
+ cp += toskew;
+ }
+}
+
+/*
+ * 8-bit unpacked CMYK samples => RGBA
+ */
+DECLARESepPutFunc(putCMYKseparate8bittile)
+{
+ (void) img; (void) y;
+ while (h-- > 0) {
+ uint32 rv, gv, bv, kv;
+ for (x = w; x-- > 0;) {
+ kv = 255 - *a++;
+ rv = (kv*(255-*r++))/255;
+ gv = (kv*(255-*g++))/255;
+ bv = (kv*(255-*b++))/255;
+ *cp++ = PACK4(rv,gv,bv,255);
+ }
+ SKEW4(r, g, b, a, fromskew);
+ cp += toskew;
+ }
+}
+
+/*
+ * 8-bit unpacked samples => RGBA w/ unassociated alpha
+ */
+DECLARESepPutFunc(putRGBUAseparate8bittile)
+{
+ (void) img; (void) y;
+ while (h-- > 0) {
+ uint32 rv, gv, bv, av;
+ uint8* m;
+ for (x = w; x-- > 0;) {
+ av = *a++;
+ m = img->UaToAa+(av<<8);
+ rv = m[*r++];
+ gv = m[*g++];
+ bv = m[*b++];
+ *cp++ = PACK4(rv,gv,bv,av);
+ }
+ SKEW4(r, g, b, a, fromskew);
+ cp += toskew;
+ }
+}
+
+/*
+ * 16-bit unpacked samples => RGB
+ */
+DECLARESepPutFunc(putRGBseparate16bittile)
+{
+ uint16 *wr = (uint16*) r;
+ uint16 *wg = (uint16*) g;
+ uint16 *wb = (uint16*) b;
+ (void) img; (void) y; (void) a;
+ while (h-- > 0) {
+ for (x = 0; x < w; x++)
+ *cp++ = PACK(img->Bitdepth16To8[*wr++],
+ img->Bitdepth16To8[*wg++],
+ img->Bitdepth16To8[*wb++]);
+ SKEW(wr, wg, wb, fromskew);
+ cp += toskew;
+ }
+}
+
+/*
+ * 16-bit unpacked samples => RGBA w/ associated alpha
+ */
+DECLARESepPutFunc(putRGBAAseparate16bittile)
+{
+ uint16 *wr = (uint16*) r;
+ uint16 *wg = (uint16*) g;
+ uint16 *wb = (uint16*) b;
+ uint16 *wa = (uint16*) a;
+ (void) img; (void) y;
+ while (h-- > 0) {
+ for (x = 0; x < w; x++)
+ *cp++ = PACK4(img->Bitdepth16To8[*wr++],
+ img->Bitdepth16To8[*wg++],
+ img->Bitdepth16To8[*wb++],
+ img->Bitdepth16To8[*wa++]);
+ SKEW4(wr, wg, wb, wa, fromskew);
+ cp += toskew;
+ }
+}
+
+/*
+ * 16-bit unpacked samples => RGBA w/ unassociated alpha
+ */
+DECLARESepPutFunc(putRGBUAseparate16bittile)
+{
+ uint16 *wr = (uint16*) r;
+ uint16 *wg = (uint16*) g;
+ uint16 *wb = (uint16*) b;
+ uint16 *wa = (uint16*) a;
+ (void) img; (void) y;
+ while (h-- > 0) {
+ uint32 r,g,b,a;
+ uint8* m;
+ for (x = w; x-- > 0;) {
+ a = img->Bitdepth16To8[*wa++];
+ m = img->UaToAa+(a<<8);
+ r = m[img->Bitdepth16To8[*wr++]];
+ g = m[img->Bitdepth16To8[*wg++]];
+ b = m[img->Bitdepth16To8[*wb++]];
+ *cp++ = PACK4(r,g,b,a);
+ }
+ SKEW4(wr, wg, wb, wa, fromskew);
+ cp += toskew;
+ }
+}
+
+/*
+ * 8-bit packed CIE L*a*b 1976 samples => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitCIELab)
+{
+ float X, Y, Z;
+ uint32 r, g, b;
+ (void) y;
+ fromskew *= 3;
+ while (h-- > 0) {
+ for (x = w; x-- > 0;) {
+ TIFFCIELabToXYZ(img->cielab,
+ (unsigned char)pp[0],
+ (signed char)pp[1],
+ (signed char)pp[2],
+ &X, &Y, &Z);
+ TIFFXYZToRGB(img->cielab, X, Y, Z, &r, &g, &b);
+ *cp++ = PACK(r, g, b);
+ pp += 3;
+ }
+ cp += toskew;
+ pp += fromskew;
+ }
+}
+
+/*
+ * YCbCr -> RGB conversion and packing routines.
+ */
+
+#define YCbCrtoRGB(dst, Y) { \
+ uint32 r, g, b; \
+ TIFFYCbCrtoRGB(img->ycbcr, (Y), Cb, Cr, &r, &g, &b); \
+ dst = PACK(r, g, b); \
+}
+
+/*
+ * 8-bit packed YCbCr samples => RGB
+ * This function is generic for different sampling sizes,
+ * and can handle blocks sizes that aren't multiples of the
+ * sampling size. However, it is substantially less optimized
+ * than the specific sampling cases. It is used as a fallback
+ * for difficult blocks.
+ */
+#ifdef notdef
+static void putcontig8bitYCbCrGenericTile(
+ TIFFRGBAImage* img,
+ uint32* cp,
+ uint32 x, uint32 y,
+ uint32 w, uint32 h,
+ int32 fromskew, int32 toskew,
+ unsigned char* pp,
+ int h_group,
+ int v_group )
+
+{
+ uint32* cp1 = cp+w+toskew;
+ uint32* cp2 = cp1+w+toskew;
+ uint32* cp3 = cp2+w+toskew;
+ int32 incr = 3*w+4*toskew;
+ int32 Cb, Cr;
+ int group_size = v_group * h_group + 2;
+
+ (void) y;
+ fromskew = (fromskew * group_size) / h_group;
+
+ for( yy = 0; yy < h; yy++ )
+ {
+ unsigned char *pp_line;
+ int y_line_group = yy / v_group;
+ int y_remainder = yy - y_line_group * v_group;
+
+ pp_line = pp + v_line_group *
+
+
+ for( xx = 0; xx < w; xx++ )
+ {
+ Cb = pp
+ }
+ }
+ for (; h >= 4; h -= 4) {
+ x = w>>2;
+ do {
+ Cb = pp[16];
+ Cr = pp[17];
+
+ YCbCrtoRGB(cp [0], pp[ 0]);
+ YCbCrtoRGB(cp [1], pp[ 1]);
+ YCbCrtoRGB(cp [2], pp[ 2]);
+ YCbCrtoRGB(cp [3], pp[ 3]);
+ YCbCrtoRGB(cp1[0], pp[ 4]);
+ YCbCrtoRGB(cp1[1], pp[ 5]);
+ YCbCrtoRGB(cp1[2], pp[ 6]);
+ YCbCrtoRGB(cp1[3], pp[ 7]);
+ YCbCrtoRGB(cp2[0], pp[ 8]);
+ YCbCrtoRGB(cp2[1], pp[ 9]);
+ YCbCrtoRGB(cp2[2], pp[10]);
+ YCbCrtoRGB(cp2[3], pp[11]);
+ YCbCrtoRGB(cp3[0], pp[12]);
+ YCbCrtoRGB(cp3[1], pp[13]);
+ YCbCrtoRGB(cp3[2], pp[14]);
+ YCbCrtoRGB(cp3[3], pp[15]);
+
+ cp += 4, cp1 += 4, cp2 += 4, cp3 += 4;
+ pp += 18;
+ } while (--x);
+ cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
+ pp += fromskew;
+ }
+}
+#endif
+
+/*
+ * 8-bit packed YCbCr samples w/ 4,4 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr44tile)
+{
+ uint32* cp1 = cp+w+toskew;
+ uint32* cp2 = cp1+w+toskew;
+ uint32* cp3 = cp2+w+toskew;
+ int32 incr = 3*w+4*toskew;
+
+ (void) y;
+ /* adjust fromskew */
+ fromskew = (fromskew * 18) / 4;
+ if ((h & 3) == 0 && (w & 3) == 0) {
+ for (; h >= 4; h -= 4) {
+ x = w>>2;
+ do {
+ int32 Cb = pp[16];
+ int32 Cr = pp[17];
+
+ YCbCrtoRGB(cp [0], pp[ 0]);
+ YCbCrtoRGB(cp [1], pp[ 1]);
+ YCbCrtoRGB(cp [2], pp[ 2]);
+ YCbCrtoRGB(cp [3], pp[ 3]);
+ YCbCrtoRGB(cp1[0], pp[ 4]);
+ YCbCrtoRGB(cp1[1], pp[ 5]);
+ YCbCrtoRGB(cp1[2], pp[ 6]);
+ YCbCrtoRGB(cp1[3], pp[ 7]);
+ YCbCrtoRGB(cp2[0], pp[ 8]);
+ YCbCrtoRGB(cp2[1], pp[ 9]);
+ YCbCrtoRGB(cp2[2], pp[10]);
+ YCbCrtoRGB(cp2[3], pp[11]);
+ YCbCrtoRGB(cp3[0], pp[12]);
+ YCbCrtoRGB(cp3[1], pp[13]);
+ YCbCrtoRGB(cp3[2], pp[14]);
+ YCbCrtoRGB(cp3[3], pp[15]);
+
+ cp += 4, cp1 += 4, cp2 += 4, cp3 += 4;
+ pp += 18;
+ } while (--x);
+ cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
+ pp += fromskew;
+ }
+ } else {
+ while (h > 0) {
+ for (x = w; x > 0;) {
+ int32 Cb = pp[16];
+ int32 Cr = pp[17];
+ switch (x) {
+ default:
+ switch (h) {
+ default: YCbCrtoRGB(cp3[3], pp[15]); /* FALLTHROUGH */
+ case 3: YCbCrtoRGB(cp2[3], pp[11]); /* FALLTHROUGH */
+ case 2: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */
+ case 1: YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */
+ } /* FALLTHROUGH */
+ case 3:
+ switch (h) {
+ default: YCbCrtoRGB(cp3[2], pp[14]); /* FALLTHROUGH */
+ case 3: YCbCrtoRGB(cp2[2], pp[10]); /* FALLTHROUGH */
+ case 2: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */
+ case 1: YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */
+ } /* FALLTHROUGH */
+ case 2:
+ switch (h) {
+ default: YCbCrtoRGB(cp3[1], pp[13]); /* FALLTHROUGH */
+ case 3: YCbCrtoRGB(cp2[1], pp[ 9]); /* FALLTHROUGH */
+ case 2: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */
+ case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
+ } /* FALLTHROUGH */
+ case 1:
+ switch (h) {
+ default: YCbCrtoRGB(cp3[0], pp[12]); /* FALLTHROUGH */
+ case 3: YCbCrtoRGB(cp2[0], pp[ 8]); /* FALLTHROUGH */
+ case 2: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */
+ case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
+ } /* FALLTHROUGH */
+ }
+ if (x < 4) {
+ cp += x; cp1 += x; cp2 += x; cp3 += x;
+ x = 0;
+ }
+ else {
+ cp += 4; cp1 += 4; cp2 += 4; cp3 += 4;
+ x -= 4;
+ }
+ pp += 18;
+ }
+ if (h <= 4)
+ break;
+ h -= 4;
+ cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
+ pp += fromskew;
+ }
+ }
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 4,2 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr42tile)
+{
+ uint32* cp1 = cp+w+toskew;
+ int32 incr = 2*toskew+w;
+
+ (void) y;
+ fromskew = (fromskew * 10) / 4;
+ if ((h & 3) == 0 && (w & 1) == 0) {
+ for (; h >= 2; h -= 2) {
+ x = w>>2;
+ do {
+ int32 Cb = pp[8];
+ int32 Cr = pp[9];
+
+ YCbCrtoRGB(cp [0], pp[0]);
+ YCbCrtoRGB(cp [1], pp[1]);
+ YCbCrtoRGB(cp [2], pp[2]);
+ YCbCrtoRGB(cp [3], pp[3]);
+ YCbCrtoRGB(cp1[0], pp[4]);
+ YCbCrtoRGB(cp1[1], pp[5]);
+ YCbCrtoRGB(cp1[2], pp[6]);
+ YCbCrtoRGB(cp1[3], pp[7]);
+
+ cp += 4, cp1 += 4;
+ pp += 10;
+ } while (--x);
+ cp += incr, cp1 += incr;
+ pp += fromskew;
+ }
+ } else {
+ while (h > 0) {
+ for (x = w; x > 0;) {
+ int32 Cb = pp[8];
+ int32 Cr = pp[9];
+ switch (x) {
+ default:
+ switch (h) {
+ default: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */
+ case 1: YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */
+ } /* FALLTHROUGH */
+ case 3:
+ switch (h) {
+ default: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */
+ case 1: YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */
+ } /* FALLTHROUGH */
+ case 2:
+ switch (h) {
+ default: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */
+ case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
+ } /* FALLTHROUGH */
+ case 1:
+ switch (h) {
+ default: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */
+ case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
+ } /* FALLTHROUGH */
+ }
+ if (x < 4) {
+ cp += x; cp1 += x;
+ x = 0;
+ }
+ else {
+ cp += 4; cp1 += 4;
+ x -= 4;
+ }
+ pp += 10;
+ }
+ if (h <= 2)
+ break;
+ h -= 2;
+ cp += incr, cp1 += incr;
+ pp += fromskew;
+ }
+ }
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 4,1 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr41tile)
+{
+ (void) y;
+ /* XXX adjust fromskew */
+ do {
+ x = w>>2;
+ do {
+ int32 Cb = pp[4];
+ int32 Cr = pp[5];
+
+ YCbCrtoRGB(cp [0], pp[0]);
+ YCbCrtoRGB(cp [1], pp[1]);
+ YCbCrtoRGB(cp [2], pp[2]);
+ YCbCrtoRGB(cp [3], pp[3]);
+
+ cp += 4;
+ pp += 6;
+ } while (--x);
+
+ if( (w&3) != 0 )
+ {
+ int32 Cb = pp[4];
+ int32 Cr = pp[5];
+
+ switch( (w&3) ) {
+ case 3: YCbCrtoRGB(cp [2], pp[2]);
+ case 2: YCbCrtoRGB(cp [1], pp[1]);
+ case 1: YCbCrtoRGB(cp [0], pp[0]);
+ case 0: break;
+ }
+
+ cp += (w&3);
+ pp += 6;
+ }
+
+ cp += toskew;
+ pp += fromskew;
+ } while (--h);
+
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 2,2 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr22tile)
+{
+ uint32* cp2;
+ int32 incr = 2*toskew+w;
+ (void) y;
+ fromskew = (fromskew / 2) * 6;
+ cp2 = cp+w+toskew;
+ while (h>=2) {
+ x = w;
+ while (x>=2) {
+ uint32 Cb = pp[4];
+ uint32 Cr = pp[5];
+ YCbCrtoRGB(cp[0], pp[0]);
+ YCbCrtoRGB(cp[1], pp[1]);
+ YCbCrtoRGB(cp2[0], pp[2]);
+ YCbCrtoRGB(cp2[1], pp[3]);
+ cp += 2;
+ cp2 += 2;
+ pp += 6;
+ x -= 2;
+ }
+ if (x==1) {
+ uint32 Cb = pp[4];
+ uint32 Cr = pp[5];
+ YCbCrtoRGB(cp[0], pp[0]);
+ YCbCrtoRGB(cp2[0], pp[2]);
+ cp ++ ;
+ cp2 ++ ;
+ pp += 6;
+ }
+ cp += incr;
+ cp2 += incr;
+ pp += fromskew;
+ h-=2;
+ }
+ if (h==1) {
+ x = w;
+ while (x>=2) {
+ uint32 Cb = pp[4];
+ uint32 Cr = pp[5];
+ YCbCrtoRGB(cp[0], pp[0]);
+ YCbCrtoRGB(cp[1], pp[1]);
+ cp += 2;
+ cp2 += 2;
+ pp += 6;
+ x -= 2;
+ }
+ if (x==1) {
+ uint32 Cb = pp[4];
+ uint32 Cr = pp[5];
+ YCbCrtoRGB(cp[0], pp[0]);
+ }
+ }
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 2,1 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr21tile)
+{
+ (void) y;
+ fromskew = (fromskew * 4) / 2;
+ do {
+ x = w>>1;
+ do {
+ int32 Cb = pp[2];
+ int32 Cr = pp[3];
+
+ YCbCrtoRGB(cp[0], pp[0]);
+ YCbCrtoRGB(cp[1], pp[1]);
+
+ cp += 2;
+ pp += 4;
+ } while (--x);
+
+ if( (w&1) != 0 )
+ {
+ int32 Cb = pp[2];
+ int32 Cr = pp[3];
+
+ YCbCrtoRGB(cp[0], pp[0]);
+
+ cp += 1;
+ pp += 4;
+ }
+
+ cp += toskew;
+ pp += fromskew;
+ } while (--h);
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 1,2 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr12tile)
+{
+ uint32* cp2;
+ int32 incr = 2*toskew+w;
+ (void) y;
+ fromskew = (fromskew / 2) * 4;
+ cp2 = cp+w+toskew;
+ while (h>=2) {
+ x = w;
+ do {
+ uint32 Cb = pp[2];
+ uint32 Cr = pp[3];
+ YCbCrtoRGB(cp[0], pp[0]);
+ YCbCrtoRGB(cp2[0], pp[1]);
+ cp ++;
+ cp2 ++;
+ pp += 4;
+ } while (--x);
+ cp += incr;
+ cp2 += incr;
+ pp += fromskew;
+ h-=2;
+ }
+ if (h==1) {
+ x = w;
+ do {
+ uint32 Cb = pp[2];
+ uint32 Cr = pp[3];
+ YCbCrtoRGB(cp[0], pp[0]);
+ cp ++;
+ pp += 4;
+ } while (--x);
+ }
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ no subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr11tile)
+{
+ (void) y;
+ fromskew *= 3;
+ do {
+ x = w; /* was x = w>>1; patched 2000/09/25 warmerda@home.com */
+ do {
+ int32 Cb = pp[1];
+ int32 Cr = pp[2];
+
+ YCbCrtoRGB(*cp++, pp[0]);
+
+ pp += 3;
+ } while (--x);
+ cp += toskew;
+ pp += fromskew;
+ } while (--h);
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ no subsampling => RGB
+ */
+DECLARESepPutFunc(putseparate8bitYCbCr11tile)
+{
+ (void) y;
+ (void) a;
+ /* TODO: naming of input vars is still off, change obfuscating declaration inside define, or resolve obfuscation */
+ while (h-- > 0) {
+ x = w;
+ do {
+ uint32 dr, dg, db;
+ TIFFYCbCrtoRGB(img->ycbcr,*r++,*g++,*b++,&dr,&dg,&db);
+ *cp++ = PACK(dr,dg,db);
+ } while (--x);
+ SKEW(r, g, b, fromskew);
+ cp += toskew;
+ }
+}
+#undef YCbCrtoRGB
+
+static int
+initYCbCrConversion(TIFFRGBAImage* img)
+{
+ static const char module[] = "initYCbCrConversion";
+
+ float *luma, *refBlackWhite;
+
+ if (img->ycbcr == NULL) {
+ img->ycbcr = (TIFFYCbCrToRGB*) _TIFFmalloc(
+ TIFFroundup_32(sizeof (TIFFYCbCrToRGB), sizeof (long))
+ + 4*256*sizeof (TIFFRGBValue)
+ + 2*256*sizeof (int)
+ + 3*256*sizeof (int32)
+ );
+ if (img->ycbcr == NULL) {
+ TIFFErrorExt(img->tif->tif_clientdata, module,
+ "No space for YCbCr->RGB conversion state");
+ return (0);
+ }
+ }
+
+ TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRCOEFFICIENTS, &luma);
+ TIFFGetFieldDefaulted(img->tif, TIFFTAG_REFERENCEBLACKWHITE,
+ &refBlackWhite);
+ if (TIFFYCbCrToRGBInit(img->ycbcr, luma, refBlackWhite) < 0)
+ return(0);
+ return (1);
+}
+
+static tileContigRoutine
+initCIELabConversion(TIFFRGBAImage* img)
+{
+ static const char module[] = "initCIELabConversion";
+
+ float *whitePoint;
+ float refWhite[3];
+
+ if (!img->cielab) {
+ img->cielab = (TIFFCIELabToRGB *)
+ _TIFFmalloc(sizeof(TIFFCIELabToRGB));
+ if (!img->cielab) {
+ TIFFErrorExt(img->tif->tif_clientdata, module,
+ "No space for CIE L*a*b*->RGB conversion state.");
+ return NULL;
+ }
+ }
+
+ TIFFGetFieldDefaulted(img->tif, TIFFTAG_WHITEPOINT, &whitePoint);
+ refWhite[1] = 100.0F;
+ refWhite[0] = whitePoint[0] / whitePoint[1] * refWhite[1];
+ refWhite[2] = (1.0F - whitePoint[0] - whitePoint[1])
+ / whitePoint[1] * refWhite[1];
+ if (TIFFCIELabToRGBInit(img->cielab, &display_sRGB, refWhite) < 0) {
+ TIFFErrorExt(img->tif->tif_clientdata, module,
+ "Failed to initialize CIE L*a*b*->RGB conversion state.");
+ _TIFFfree(img->cielab);
+ return NULL;
+ }
+
+ return (tileContigRoutine)putcontig8bitCIELab;
+}
+
+/*
+ * Greyscale images with less than 8 bits/sample are handled
+ * with a table to avoid lots of shifts and masks. The table
+ * is setup so that put*bwtile (below) can retrieve 8/bitspersample
+ * pixel values simply by indexing into the table with one
+ * number.
+ */
+static int
+makebwmap(TIFFRGBAImage* img)
+{
+ TIFFRGBValue* Map = img->Map;
+ int bitspersample = img->bitspersample;
+ int nsamples = 8 / bitspersample;
+ int i;
+ uint32* p;
+
+ if( nsamples == 0 )
+ nsamples = 1;
+
+ img->BWmap = (uint32**) _TIFFmalloc(
+ 256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32)));
+ if (img->BWmap == NULL) {
+ TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No space for B&W mapping table");
+ return (0);
+ }
+ p = (uint32*)(img->BWmap + 256);
+ for (i = 0; i < 256; i++) {
+ TIFFRGBValue c;
+ img->BWmap[i] = p;
+ switch (bitspersample) {
+#define GREY(x) c = Map[x]; *p++ = PACK(c,c,c);
+ case 1:
+ GREY(i>>7);
+ GREY((i>>6)&1);
+ GREY((i>>5)&1);
+ GREY((i>>4)&1);
+ GREY((i>>3)&1);
+ GREY((i>>2)&1);
+ GREY((i>>1)&1);
+ GREY(i&1);
+ break;
+ case 2:
+ GREY(i>>6);
+ GREY((i>>4)&3);
+ GREY((i>>2)&3);
+ GREY(i&3);
+ break;
+ case 4:
+ GREY(i>>4);
+ GREY(i&0xf);
+ break;
+ case 8:
+ case 16:
+ GREY(i);
+ break;
+ }
+#undef GREY
+ }
+ return (1);
+}
+
+/*
+ * Construct a mapping table to convert from the range
+ * of the data samples to [0,255] --for display. This
+ * process also handles inverting B&W images when needed.
+ */
+static int
+setupMap(TIFFRGBAImage* img)
+{
+ int32 x, range;
+
+ range = (int32)((1L<<img->bitspersample)-1);
+
+ /* treat 16 bit the same as eight bit */
+ if( img->bitspersample == 16 )
+ range = (int32) 255;
+
+ img->Map = (TIFFRGBValue*) _TIFFmalloc((range+1) * sizeof (TIFFRGBValue));
+ if (img->Map == NULL) {
+ TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif),
+ "No space for photometric conversion table");
+ return (0);
+ }
+ if (img->photometric == PHOTOMETRIC_MINISWHITE) {
+ for (x = 0; x <= range; x++)
+ img->Map[x] = (TIFFRGBValue) (((range - x) * 255) / range);
+ } else {
+ for (x = 0; x <= range; x++)
+ img->Map[x] = (TIFFRGBValue) ((x * 255) / range);
+ }
+ if (img->bitspersample <= 16 &&
+ (img->photometric == PHOTOMETRIC_MINISBLACK ||
+ img->photometric == PHOTOMETRIC_MINISWHITE)) {
+ /*
+ * Use photometric mapping table to construct
+ * unpacking tables for samples <= 8 bits.
+ */
+ if (!makebwmap(img))
+ return (0);
+ /* no longer need Map, free it */
+ _TIFFfree(img->Map), img->Map = NULL;
+ }
+ return (1);
+}
+
+static int
+checkcmap(TIFFRGBAImage* img)
+{
+ uint16* r = img->redcmap;
+ uint16* g = img->greencmap;
+ uint16* b = img->bluecmap;
+ long n = 1L<<img->bitspersample;
+
+ while (n-- > 0)
+ if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
+ return (16);
+ return (8);
+}
+
+static void
+cvtcmap(TIFFRGBAImage* img)
+{
+ uint16* r = img->redcmap;
+ uint16* g = img->greencmap;
+ uint16* b = img->bluecmap;
+ long i;
+
+ for (i = (1L<<img->bitspersample)-1; i >= 0; i--) {
+#define CVT(x) ((uint16)((x)>>8))
+ r[i] = CVT(r[i]);
+ g[i] = CVT(g[i]);
+ b[i] = CVT(b[i]);
+#undef CVT
+ }
+}
+
+/*
+ * Palette images with <= 8 bits/sample are handled
+ * with a table to avoid lots of shifts and masks. The table
+ * is setup so that put*cmaptile (below) can retrieve 8/bitspersample
+ * pixel values simply by indexing into the table with one
+ * number.
+ */
+static int
+makecmap(TIFFRGBAImage* img)
+{
+ int bitspersample = img->bitspersample;
+ int nsamples = 8 / bitspersample;
+ uint16* r = img->redcmap;
+ uint16* g = img->greencmap;
+ uint16* b = img->bluecmap;
+ uint32 *p;
+ int i;
+
+ img->PALmap = (uint32**) _TIFFmalloc(
+ 256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32)));
+ if (img->PALmap == NULL) {
+ TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No space for Palette mapping table");
+ return (0);
+ }
+ p = (uint32*)(img->PALmap + 256);
+ for (i = 0; i < 256; i++) {
+ TIFFRGBValue c;
+ img->PALmap[i] = p;
+#define CMAP(x) c = (TIFFRGBValue) x; *p++ = PACK(r[c]&0xff, g[c]&0xff, b[c]&0xff);
+ switch (bitspersample) {
+ case 1:
+ CMAP(i>>7);
+ CMAP((i>>6)&1);
+ CMAP((i>>5)&1);
+ CMAP((i>>4)&1);
+ CMAP((i>>3)&1);
+ CMAP((i>>2)&1);
+ CMAP((i>>1)&1);
+ CMAP(i&1);
+ break;
+ case 2:
+ CMAP(i>>6);
+ CMAP((i>>4)&3);
+ CMAP((i>>2)&3);
+ CMAP(i&3);
+ break;
+ case 4:
+ CMAP(i>>4);
+ CMAP(i&0xf);
+ break;
+ case 8:
+ CMAP(i);
+ break;
+ }
+#undef CMAP
+ }
+ return (1);
+}
+
+/*
+ * Construct any mapping table used
+ * by the associated put routine.
+ */
+static int
+buildMap(TIFFRGBAImage* img)
+{
+ switch (img->photometric) {
+ case PHOTOMETRIC_RGB:
+ case PHOTOMETRIC_YCBCR:
+ case PHOTOMETRIC_SEPARATED:
+ if (img->bitspersample == 8)
+ break;
+ /* fall thru... */
+ case PHOTOMETRIC_MINISBLACK:
+ case PHOTOMETRIC_MINISWHITE:
+ if (!setupMap(img))
+ return (0);
+ break;
+ case PHOTOMETRIC_PALETTE:
+ /*
+ * Convert 16-bit colormap to 8-bit (unless it looks
+ * like an old-style 8-bit colormap).
+ */
+ if (checkcmap(img) == 16)
+ cvtcmap(img);
+ else
+ TIFFWarningExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "Assuming 8-bit colormap");
+ /*
+ * Use mapping table and colormap to construct
+ * unpacking tables for samples < 8 bits.
+ */
+ if (img->bitspersample <= 8 && !makecmap(img))
+ return (0);
+ break;
+ }
+ return (1);
+}
+
+/*
+ * Select the appropriate conversion routine for packed data.
+ */
+static int
+PickContigCase(TIFFRGBAImage* img)
+{
+ img->get = TIFFIsTiled(img->tif) ? gtTileContig : gtStripContig;
+ img->put.contig = NULL;
+ switch (img->photometric) {
+ case PHOTOMETRIC_RGB:
+ switch (img->bitspersample) {
+ case 8:
+ if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
+ img->put.contig = putRGBAAcontig8bittile;
+ else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
+ {
+ if (BuildMapUaToAa(img))
+ img->put.contig = putRGBUAcontig8bittile;
+ }
+ else
+ img->put.contig = putRGBcontig8bittile;
+ break;
+ case 16:
+ if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
+ {
+ if (BuildMapBitdepth16To8(img))
+ img->put.contig = putRGBAAcontig16bittile;
+ }
+ else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
+ {
+ if (BuildMapBitdepth16To8(img) &&
+ BuildMapUaToAa(img))
+ img->put.contig = putRGBUAcontig16bittile;
+ }
+ else
+ {
+ if (BuildMapBitdepth16To8(img))
+ img->put.contig = putRGBcontig16bittile;
+ }
+ break;
+ }
+ break;
+ case PHOTOMETRIC_SEPARATED:
+ if (buildMap(img)) {
+ if (img->bitspersample == 8) {
+ if (!img->Map)
+ img->put.contig = putRGBcontig8bitCMYKtile;
+ else
+ img->put.contig = putRGBcontig8bitCMYKMaptile;
+ }
+ else if(img->bitspersample == 16) /*LiuSunliang added 16bpp CMYK support.*/
+ {
+ if (!img->Map)
+ img->put.contig = putRGBcontig16bitCMYKtile;
+ else
+ img->put.contig = putRGBcontig16bitCMYKMaptile;
+ }
+ }
+ break;
+ case PHOTOMETRIC_PALETTE:
+ if (buildMap(img)) {
+ switch (img->bitspersample) {
+ case 8:
+ img->put.contig = put8bitcmaptile;
+ break;
+ case 4:
+ img->put.contig = put4bitcmaptile;
+ break;
+ case 2:
+ img->put.contig = put2bitcmaptile;
+ break;
+ case 1:
+ img->put.contig = put1bitcmaptile;
+ break;
+ }
+ }
+ break;
+ case PHOTOMETRIC_MINISWHITE:
+ case PHOTOMETRIC_MINISBLACK:
+ if (buildMap(img)) {
+ switch (img->bitspersample) {
+ case 16:
+ img->put.contig = put16bitbwtile;
+ break;
+ case 8:
+ if (img->alpha && img->samplesperpixel == 2)
+ img->put.contig = putagreytile;
+ else
+ img->put.contig = putgreytile;
+ break;
+ case 4:
+ img->put.contig = put4bitbwtile;
+ break;
+ case 2:
+ img->put.contig = put2bitbwtile;
+ break;
+ case 1:
+ img->put.contig = put1bitbwtile;
+ break;
+ }
+ }
+ break;
+ case PHOTOMETRIC_YCBCR:
+ if ((img->bitspersample==8) && (img->samplesperpixel==3))
+ {
+ if (initYCbCrConversion(img)!=0)
+ {
+ /*
+ * The 6.0 spec says that subsampling must be
+ * one of 1, 2, or 4, and that vertical subsampling
+ * must always be <= horizontal subsampling; so
+ * there are only a few possibilities and we just
+ * enumerate the cases.
+ * Joris: added support for the [1,2] case, nonetheless, to accomodate
+ * some OJPEG files
+ */
+ uint16 SubsamplingHor;
+ uint16 SubsamplingVer;
+ TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, &SubsamplingHor, &SubsamplingVer);
+ switch ((SubsamplingHor<<4)|SubsamplingVer) {
+ case 0x44:
+ img->put.contig = putcontig8bitYCbCr44tile;
+ break;
+ case 0x42:
+ img->put.contig = putcontig8bitYCbCr42tile;
+ break;
+ case 0x41:
+ img->put.contig = putcontig8bitYCbCr41tile;
+ break;
+ case 0x22:
+ img->put.contig = putcontig8bitYCbCr22tile;
+ break;
+ case 0x21:
+ img->put.contig = putcontig8bitYCbCr21tile;
+ break;
+ case 0x12:
+ img->put.contig = putcontig8bitYCbCr12tile;
+ break;
+ case 0x11:
+ img->put.contig = putcontig8bitYCbCr11tile;
+ break;
+ }
+ }
+ }
+ break;
+ case PHOTOMETRIC_CIELAB:
+ if (buildMap(img)) {
+ if (img->bitspersample == 8)
+ img->put.contig = initCIELabConversion(img);
+ break;
+ }
+ }
+ return ((img->get!=NULL) && (img->put.contig!=NULL));
+}
+
+/*
+ * Select the appropriate conversion routine for unpacked data.
+ *
+ * NB: we assume that unpacked single channel data is directed
+ * to the "packed routines.
+ */
+static int
+PickSeparateCase(TIFFRGBAImage* img)
+{
+ img->get = TIFFIsTiled(img->tif) ? gtTileSeparate : gtStripSeparate;
+ img->put.separate = NULL;
+ switch (img->photometric) {
+ case PHOTOMETRIC_MINISWHITE:
+ case PHOTOMETRIC_MINISBLACK:
+ /* greyscale images processed pretty much as RGB by gtTileSeparate */
+ case PHOTOMETRIC_RGB:
+ switch (img->bitspersample) {
+ case 8:
+ if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
+ img->put.separate = putRGBAAseparate8bittile;
+ else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
+ {
+ if (BuildMapUaToAa(img))
+ img->put.separate = putRGBUAseparate8bittile;
+ }
+ else
+ img->put.separate = putRGBseparate8bittile;
+ break;
+ case 16:
+ if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
+ {
+ if (BuildMapBitdepth16To8(img))
+ img->put.separate = putRGBAAseparate16bittile;
+ }
+ else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
+ {
+ if (BuildMapBitdepth16To8(img) &&
+ BuildMapUaToAa(img))
+ img->put.separate = putRGBUAseparate16bittile;
+ }
+ else
+ {
+ if (BuildMapBitdepth16To8(img))
+ img->put.separate = putRGBseparate16bittile;
+ }
+ break;
+ }
+ break;
+ case PHOTOMETRIC_SEPARATED:
+ if (img->bitspersample == 8 && img->samplesperpixel == 4)
+ {
+ img->alpha = 1; // Not alpha, but seems like the only way to get 4th band
+ img->put.separate = putCMYKseparate8bittile;
+ }
+ break;
+ case PHOTOMETRIC_YCBCR:
+ if ((img->bitspersample==8) && (img->samplesperpixel==3))
+ {
+ if (initYCbCrConversion(img)!=0)
+ {
+ uint16 hs, vs;
+ TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, &hs, &vs);
+ switch ((hs<<4)|vs) {
+ case 0x11:
+ img->put.separate = putseparate8bitYCbCr11tile;
+ break;
+ /* TODO: add other cases here */
+ }
+ }
+ }
+ break;
+ }
+ return ((img->get!=NULL) && (img->put.separate!=NULL));
+}
+
+static int
+BuildMapUaToAa(TIFFRGBAImage* img)
+{
+ static const char module[]="BuildMapUaToAa";
+ uint8* m;
+ uint16 na,nv;
+ assert(img->UaToAa==NULL);
+ img->UaToAa=_TIFFmalloc(65536);
+ if (img->UaToAa==NULL)
+ {
+ TIFFErrorExt(img->tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ m=img->UaToAa;
+ for (na=0; na<256; na++)
+ {
+ for (nv=0; nv<256; nv++)
+ *m++=(nv*na+127)/255;
+ }
+ return(1);
+}
+
+static int
+BuildMapBitdepth16To8(TIFFRGBAImage* img)
+{
+ static const char module[]="BuildMapBitdepth16To8";
+ uint8* m;
+ uint32 n;
+ assert(img->Bitdepth16To8==NULL);
+ img->Bitdepth16To8=_TIFFmalloc(65536);
+ if (img->Bitdepth16To8==NULL)
+ {
+ TIFFErrorExt(img->tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ m=img->Bitdepth16To8;
+ for (n=0; n<65536; n++)
+ *m++=(n+128)/257;
+ return(1);
+}
+
+
+/*
+ * Read a whole strip off data from the file, and convert to RGBA form.
+ * If this is the last strip, then it will only contain the portion of
+ * the strip that is actually within the image space. The result is
+ * organized in bottom to top form.
+ */
+
+
+int
+TIFFReadRGBAStrip(TIFF* tif, uint32 row, uint32 * raster )
+
+{
+ char emsg[1024] = "";
+ TIFFRGBAImage img;
+ int ok;
+ uint32 rowsperstrip, rows_to_read;
+
+ if( TIFFIsTiled( tif ) )
+ {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
+ "Can't use TIFFReadRGBAStrip() with tiled file.");
+ return (0);
+ }
+
+ TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
+ if( (row % rowsperstrip) != 0 )
+ {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
+ "Row passed to TIFFReadRGBAStrip() must be first in a strip.");
+ return (0);
+ }
+
+ if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, 0, emsg)) {
+
+ img.row_offset = row;
+ img.col_offset = 0;
+
+ if( row + rowsperstrip > img.height )
+ rows_to_read = img.height - row;
+ else
+ rows_to_read = rowsperstrip;
+
+ ok = TIFFRGBAImageGet(&img, raster, img.width, rows_to_read );
+
+ TIFFRGBAImageEnd(&img);
+ } else {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg);
+ ok = 0;
+ }
+
+ return (ok);
+}
+
+/*
+ * Read a whole tile off data from the file, and convert to RGBA form.
+ * The returned RGBA data is organized from bottom to top of tile,
+ * and may include zeroed areas if the tile extends off the image.
+ */
+
+int
+TIFFReadRGBATile(TIFF* tif, uint32 col, uint32 row, uint32 * raster)
+
+{
+ char emsg[1024] = "";
+ TIFFRGBAImage img;
+ int ok;
+ uint32 tile_xsize, tile_ysize;
+ uint32 read_xsize, read_ysize;
+ uint32 i_row;
+
+ /*
+ * Verify that our request is legal - on a tile file, and on a
+ * tile boundary.
+ */
+
+ if( !TIFFIsTiled( tif ) )
+ {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
+ "Can't use TIFFReadRGBATile() with stripped file.");
+ return (0);
+ }
+
+ TIFFGetFieldDefaulted(tif, TIFFTAG_TILEWIDTH, &tile_xsize);
+ TIFFGetFieldDefaulted(tif, TIFFTAG_TILELENGTH, &tile_ysize);
+ if( (col % tile_xsize) != 0 || (row % tile_ysize) != 0 )
+ {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
+ "Row/col passed to TIFFReadRGBATile() must be top"
+ "left corner of a tile.");
+ return (0);
+ }
+
+ /*
+ * Setup the RGBA reader.
+ */
+
+ if (!TIFFRGBAImageOK(tif, emsg)
+ || !TIFFRGBAImageBegin(&img, tif, 0, emsg)) {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg);
+ return( 0 );
+ }
+
+ /*
+ * The TIFFRGBAImageGet() function doesn't allow us to get off the
+ * edge of the image, even to fill an otherwise valid tile. So we
+ * figure out how much we can read, and fix up the tile buffer to
+ * a full tile configuration afterwards.
+ */
+
+ if( row + tile_ysize > img.height )
+ read_ysize = img.height - row;
+ else
+ read_ysize = tile_ysize;
+
+ if( col + tile_xsize > img.width )
+ read_xsize = img.width - col;
+ else
+ read_xsize = tile_xsize;
+
+ /*
+ * Read the chunk of imagery.
+ */
+
+ img.row_offset = row;
+ img.col_offset = col;
+
+ ok = TIFFRGBAImageGet(&img, raster, read_xsize, read_ysize );
+
+ TIFFRGBAImageEnd(&img);
+
+ /*
+ * If our read was incomplete we will need to fix up the tile by
+ * shifting the data around as if a full tile of data is being returned.
+ *
+ * This is all the more complicated because the image is organized in
+ * bottom to top format.
+ */
+
+ if( read_xsize == tile_xsize && read_ysize == tile_ysize )
+ return( ok );
+
+ for( i_row = 0; i_row < read_ysize; i_row++ ) {
+ memmove( raster + (tile_ysize - i_row - 1) * tile_xsize,
+ raster + (read_ysize - i_row - 1) * read_xsize,
+ read_xsize * sizeof(uint32) );
+ _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize+read_xsize,
+ 0, sizeof(uint32) * (tile_xsize - read_xsize) );
+ }
+
+ for( i_row = read_ysize; i_row < tile_ysize; i_row++ ) {
+ _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize,
+ 0, sizeof(uint32) * tile_xsize );
+ }
+
+ return (ok);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_jpeg.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_jpeg.c
new file mode 100644
index 0000000..84f0f9e
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_jpeg.c
@@ -0,0 +1,2311 @@
+/* $Id: tif_jpeg.c,v 1.111 2012-07-06 18:48:04 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1994-1997 Sam Leffler
+ * Copyright (c) 1994-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#define WIN32_LEAN_AND_MEAN
+#define VC_EXTRALEAN
+
+#include "tiffiop.h"
+#ifdef JPEG_SUPPORT
+
+/*
+ * TIFF Library
+ *
+ * JPEG Compression support per TIFF Technical Note #2
+ * (*not* per the original TIFF 6.0 spec).
+ *
+ * This file is simply an interface to the libjpeg library written by
+ * the Independent JPEG Group. You need release 5 or later of the IJG
+ * code, which you can find on the Internet at ftp.uu.net:/graphics/jpeg/.
+ *
+ * Contributed by Tom Lane <tgl@sss.pgh.pa.us>.
+ */
+#include <setjmp.h>
+
+int TIFFFillStrip(TIFF* tif, uint32 strip);
+int TIFFFillTile(TIFF* tif, uint32 tile);
+int TIFFReInitJPEG_12( TIFF *tif, int scheme, int is_encode );
+
+/* We undefine FAR to avoid conflict with JPEG definition */
+
+#ifdef FAR
+#undef FAR
+#endif
+
+/*
+ Libjpeg's jmorecfg.h defines INT16 and INT32, but only if XMD_H is
+ not defined. Unfortunately, the MinGW and Borland compilers include
+ a typedef for INT32, which causes a conflict. MSVC does not include
+ a conficting typedef given the headers which are included.
+*/
+#if defined(__BORLANDC__) || defined(__MINGW32__)
+# define XMD_H 1
+#endif
+
+/*
+ The windows RPCNDR.H file defines boolean, but defines it with the
+ unsigned char size. You should compile JPEG library using appropriate
+ definitions in jconfig.h header, but many users compile library in wrong
+ way. That causes errors of the following type:
+
+ "JPEGLib: JPEG parameter struct mismatch: library thinks size is 432,
+ caller expects 464"
+
+ For such users we wil fix the problem here. See install.doc file from
+ the JPEG library distribution for details.
+*/
+
+/* Define "boolean" as unsigned char, not int, per Windows custom. */
+#if defined(WIN32) && !defined(__MINGW32__)
+# ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
+ typedef unsigned char boolean;
+# endif
+# define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */
+#endif
+
+#ifndef _FX_JPEG_TURBO_
+ #include "../../libjpeg/jpeglib.h"
+ #include "../../libjpeg/jerror.h"
+#else
+ #include "../../libjpeg-turbo/jpeglib.h"
+ #include "../../libjpeg-turbo/jerror.h"
+#endif//_FX_JPEG_TURBO_
+
+/*
+ * Do we want to do special processing suitable for when JSAMPLE is a
+ * 16bit value?
+ */
+
+#if defined(JPEG_LIB_MK1)
+# define JPEG_LIB_MK1_OR_12BIT 1
+#elif BITS_IN_JSAMPLE == 12
+# define JPEG_LIB_MK1_OR_12BIT 1
+#endif
+
+/*
+ * We are using width_in_blocks which is supposed to be private to
+ * libjpeg. Unfortunately, the libjpeg delivered with Cygwin has
+ * renamed this member to width_in_data_units. Since the header has
+ * also renamed a define, use that unique define name in order to
+ * detect the problem header and adjust to suit.
+ */
+#if defined(D_MAX_DATA_UNITS_IN_MCU)
+#define width_in_blocks width_in_data_units
+#endif
+
+/*
+ * On some machines it may be worthwhile to use _setjmp or sigsetjmp
+ * in place of plain setjmp. These macros will make it easier.
+ */
+#define SETJMP(jbuf) setjmp(jbuf)
+#define LONGJMP(jbuf,code) longjmp(jbuf,code)
+#define JMP_BUF jmp_buf
+
+typedef struct jpeg_destination_mgr jpeg_destination_mgr;
+typedef struct jpeg_source_mgr jpeg_source_mgr;
+typedef struct jpeg_error_mgr jpeg_error_mgr;
+
+/*
+ * State block for each open TIFF file using
+ * libjpeg to do JPEG compression/decompression.
+ *
+ * libjpeg's visible state is either a jpeg_compress_struct
+ * or jpeg_decompress_struct depending on which way we
+ * are going. comm can be used to refer to the fields
+ * which are common to both.
+ *
+ * NB: cinfo is required to be the first member of JPEGState,
+ * so we can safely cast JPEGState* -> jpeg_xxx_struct*
+ * and vice versa!
+ */
+typedef struct {
+ union {
+ struct jpeg_compress_struct c;
+ struct jpeg_decompress_struct d;
+ struct jpeg_common_struct comm;
+ } cinfo; /* NB: must be first */
+ int cinfo_initialized;
+
+ jpeg_error_mgr err; /* libjpeg error manager */
+ JMP_BUF exit_jmpbuf; /* for catching libjpeg failures */
+ /*
+ * The following two members could be a union, but
+ * they're small enough that it's not worth the effort.
+ */
+ jpeg_destination_mgr dest; /* data dest for compression */
+ jpeg_source_mgr src; /* data source for decompression */
+ /* private state */
+ TIFF* tif; /* back link needed by some code */
+ uint16 photometric; /* copy of PhotometricInterpretation */
+ uint16 h_sampling; /* luminance sampling factors */
+ uint16 v_sampling;
+ tmsize_t bytesperline; /* decompressed bytes per scanline */
+ /* pointers to intermediate buffers when processing downsampled data */
+ JSAMPARRAY ds_buffer[MAX_COMPONENTS];
+ int scancount; /* number of "scanlines" accumulated */
+ int samplesperclump;
+
+ TIFFVGetMethod vgetparent; /* super-class method */
+ TIFFVSetMethod vsetparent; /* super-class method */
+ TIFFPrintMethod printdir; /* super-class method */
+ TIFFStripMethod defsparent; /* super-class method */
+ TIFFTileMethod deftparent; /* super-class method */
+ /* pseudo-tag fields */
+ void* jpegtables; /* JPEGTables tag value, or NULL */
+ uint32 jpegtables_length; /* number of bytes in same */
+ int jpegquality; /* Compression quality level */
+ int jpegcolormode; /* Auto RGB<=>YCbCr convert? */
+ int jpegtablesmode; /* What to put in JPEGTables */
+
+ int ycbcrsampling_fetched;
+} JPEGState;
+
+#define JState(tif) ((JPEGState*)(tif)->tif_data)
+
+static int JPEGDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s);
+static int JPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s);
+static int JPEGEncode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s);
+static int JPEGEncodeRaw(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s);
+static int JPEGInitializeLibJPEG(TIFF * tif, int decode );
+static int DecodeRowError(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s);
+
+#define FIELD_JPEGTABLES (FIELD_CODEC+0)
+
+static const TIFFField jpegFields[] = {
+ { TIFFTAG_JPEGTABLES, -3, -3, TIFF_UNDEFINED, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_C32_UINT8, FIELD_JPEGTABLES, FALSE, TRUE, "JPEGTables", NULL },
+ { TIFFTAG_JPEGQUALITY, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "", NULL },
+ { TIFFTAG_JPEGCOLORMODE, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, FALSE, FALSE, "", NULL },
+ { TIFFTAG_JPEGTABLESMODE, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, FALSE, FALSE, "", NULL }
+};
+
+/*
+ * libjpeg interface layer.
+ *
+ * We use setjmp/longjmp to return control to libtiff
+ * when a fatal error is encountered within the JPEG
+ * library. We also direct libjpeg error and warning
+ * messages through the appropriate libtiff handlers.
+ */
+
+/*
+ * Error handling routines (these replace corresponding
+ * IJG routines from jerror.c). These are used for both
+ * compression and decompression.
+ */
+static void
+TIFFjpeg_error_exit(j_common_ptr cinfo)
+{
+ JPEGState *sp = (JPEGState *) cinfo; /* NB: cinfo assumed first */
+ char buffer[JMSG_LENGTH_MAX];
+
+ (*cinfo->err->format_message) (cinfo, buffer);
+ TIFFErrorExt(sp->tif->tif_clientdata, "JPEGLib", "%s", buffer); /* display the error message */
+ jpeg_abort(cinfo); /* clean up libjpeg state */
+ LONGJMP(sp->exit_jmpbuf, 1); /* return to libtiff caller */
+}
+
+/*
+ * This routine is invoked only for warning messages,
+ * since error_exit does its own thing and trace_level
+ * is never set > 0.
+ */
+static void
+TIFFjpeg_output_message(j_common_ptr cinfo)
+{
+ char buffer[JMSG_LENGTH_MAX];
+
+ (*cinfo->err->format_message) (cinfo, buffer);
+ TIFFWarningExt(((JPEGState *) cinfo)->tif->tif_clientdata, "JPEGLib", "%s", buffer);
+}
+
+/*
+ * Interface routines. This layer of routines exists
+ * primarily to limit side-effects from using setjmp.
+ * Also, normal/error returns are converted into return
+ * values per libtiff practice.
+ */
+#define CALLJPEG(sp, fail, op) (SETJMP((sp)->exit_jmpbuf) ? (fail) : (op))
+#define CALLVJPEG(sp, op) CALLJPEG(sp, 0, ((op),1))
+
+static int
+TIFFjpeg_create_compress(JPEGState* sp)
+{
+ /* initialize JPEG error handling */
+ sp->cinfo.c.err = jpeg_std_error(&sp->err);
+ sp->err.error_exit = TIFFjpeg_error_exit;
+ sp->err.output_message = TIFFjpeg_output_message;
+
+ return CALLVJPEG(sp, jpeg_create_compress(&sp->cinfo.c));
+}
+
+static int
+TIFFjpeg_create_decompress(JPEGState* sp)
+{
+ /* initialize JPEG error handling */
+ sp->cinfo.d.err = jpeg_std_error(&sp->err);
+ sp->err.error_exit = TIFFjpeg_error_exit;
+ sp->err.output_message = TIFFjpeg_output_message;
+
+ return CALLVJPEG(sp, jpeg_create_decompress(&sp->cinfo.d));
+}
+
+static int
+TIFFjpeg_set_defaults(JPEGState* sp)
+{
+ return CALLVJPEG(sp, jpeg_set_defaults(&sp->cinfo.c));
+}
+
+static int
+TIFFjpeg_set_colorspace(JPEGState* sp, J_COLOR_SPACE colorspace)
+{
+ return CALLVJPEG(sp, jpeg_set_colorspace(&sp->cinfo.c, colorspace));
+}
+
+static int
+TIFFjpeg_set_quality(JPEGState* sp, int quality, boolean force_baseline)
+{
+ return CALLVJPEG(sp,
+ jpeg_set_quality(&sp->cinfo.c, quality, force_baseline));
+}
+
+static int
+TIFFjpeg_suppress_tables(JPEGState* sp, boolean suppress)
+{
+ return CALLVJPEG(sp, jpeg_suppress_tables(&sp->cinfo.c, suppress));
+}
+
+static int
+TIFFjpeg_start_compress(JPEGState* sp, boolean write_all_tables)
+{
+ return CALLVJPEG(sp,
+ jpeg_start_compress(&sp->cinfo.c, write_all_tables));
+}
+
+static int
+TIFFjpeg_write_scanlines(JPEGState* sp, JSAMPARRAY scanlines, int num_lines)
+{
+ return CALLJPEG(sp, -1, (int) jpeg_write_scanlines(&sp->cinfo.c,
+ scanlines, (JDIMENSION) num_lines));
+}
+
+static int
+TIFFjpeg_write_raw_data(JPEGState* sp, JSAMPIMAGE data, int num_lines)
+{
+ return CALLJPEG(sp, -1, (int) jpeg_write_raw_data(&sp->cinfo.c,
+ data, (JDIMENSION) num_lines));
+}
+
+static int
+TIFFjpeg_finish_compress(JPEGState* sp)
+{
+ return CALLVJPEG(sp, jpeg_finish_compress(&sp->cinfo.c));
+}
+
+static int
+TIFFjpeg_write_tables(JPEGState* sp)
+{
+ return CALLVJPEG(sp, jpeg_write_tables(&sp->cinfo.c));
+}
+
+static int
+TIFFjpeg_read_header(JPEGState* sp, boolean require_image)
+{
+ return CALLJPEG(sp, -1, jpeg_read_header(&sp->cinfo.d, require_image));
+}
+
+static int
+TIFFjpeg_start_decompress(JPEGState* sp)
+{
+ return CALLVJPEG(sp, jpeg_start_decompress(&sp->cinfo.d));
+}
+
+static int
+TIFFjpeg_read_scanlines(JPEGState* sp, JSAMPARRAY scanlines, int max_lines)
+{
+ return CALLJPEG(sp, -1, (int) jpeg_read_scanlines(&sp->cinfo.d,
+ scanlines, (JDIMENSION) max_lines));
+}
+
+static int
+TIFFjpeg_read_raw_data(JPEGState* sp, JSAMPIMAGE data, int max_lines)
+{
+ return CALLJPEG(sp, -1, (int) jpeg_read_raw_data(&sp->cinfo.d,
+ data, (JDIMENSION) max_lines));
+}
+
+static int
+TIFFjpeg_finish_decompress(JPEGState* sp)
+{
+ return CALLJPEG(sp, -1, (int) jpeg_finish_decompress(&sp->cinfo.d));
+}
+
+static int
+TIFFjpeg_abort(JPEGState* sp)
+{
+ return CALLVJPEG(sp, jpeg_abort(&sp->cinfo.comm));
+}
+
+static int
+TIFFjpeg_destroy(JPEGState* sp)
+{
+ return CALLVJPEG(sp, jpeg_destroy(&sp->cinfo.comm));
+}
+
+static JSAMPARRAY
+TIFFjpeg_alloc_sarray(JPEGState* sp, int pool_id,
+ JDIMENSION samplesperrow, JDIMENSION numrows)
+{
+ return CALLJPEG(sp, (JSAMPARRAY) NULL,
+ (*sp->cinfo.comm.mem->alloc_sarray)
+ (&sp->cinfo.comm, pool_id, samplesperrow, numrows));
+}
+
+/*
+ * JPEG library destination data manager.
+ * These routines direct compressed data from libjpeg into the
+ * libtiff output buffer.
+ */
+
+static void
+std_init_destination(j_compress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+ TIFF* tif = sp->tif;
+
+ sp->dest.next_output_byte = (JOCTET*) tif->tif_rawdata;
+ sp->dest.free_in_buffer = (size_t) tif->tif_rawdatasize;
+}
+
+static boolean
+std_empty_output_buffer(j_compress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+ TIFF* tif = sp->tif;
+
+ /* the entire buffer has been filled */
+ tif->tif_rawcc = tif->tif_rawdatasize;
+
+#ifdef IPPJ_HUFF
+ /*
+ * The Intel IPP performance library does not necessarily fill up
+ * the whole output buffer on each pass, so only dump out the parts
+ * that have been filled.
+ * http://trac.osgeo.org/gdal/wiki/JpegIPP
+ */
+ if ( sp->dest.free_in_buffer >= 0 ) {
+ tif->tif_rawcc = tif->tif_rawdatasize - sp->dest.free_in_buffer;
+ }
+#endif
+
+ TIFFFlushData1(tif);
+ sp->dest.next_output_byte = (JOCTET*) tif->tif_rawdata;
+ sp->dest.free_in_buffer = (size_t) tif->tif_rawdatasize;
+
+ return (TRUE);
+}
+
+static void
+std_term_destination(j_compress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+ TIFF* tif = sp->tif;
+
+ tif->tif_rawcp = (uint8*) sp->dest.next_output_byte;
+ tif->tif_rawcc =
+ tif->tif_rawdatasize - (tmsize_t) sp->dest.free_in_buffer;
+ /* NB: libtiff does the final buffer flush */
+}
+
+static void
+TIFFjpeg_data_dest(JPEGState* sp, TIFF* tif)
+{
+ (void) tif;
+ sp->cinfo.c.dest = &sp->dest;
+ sp->dest.init_destination = std_init_destination;
+ sp->dest.empty_output_buffer = std_empty_output_buffer;
+ sp->dest.term_destination = std_term_destination;
+}
+
+/*
+ * Alternate destination manager for outputting to JPEGTables field.
+ */
+
+static void
+tables_init_destination(j_compress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+
+ /* while building, jpegtables_length is allocated buffer size */
+ sp->dest.next_output_byte = (JOCTET*) sp->jpegtables;
+ sp->dest.free_in_buffer = (size_t) sp->jpegtables_length;
+}
+
+static boolean
+tables_empty_output_buffer(j_compress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+ void* newbuf;
+
+ /* the entire buffer has been filled; enlarge it by 1000 bytes */
+ newbuf = _TIFFrealloc((void*) sp->jpegtables,
+ (tmsize_t) (sp->jpegtables_length + 1000));
+ if (newbuf == NULL)
+ ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 100);
+ sp->dest.next_output_byte = (JOCTET*) newbuf + sp->jpegtables_length;
+ sp->dest.free_in_buffer = (size_t) 1000;
+ sp->jpegtables = newbuf;
+ sp->jpegtables_length += 1000;
+ return (TRUE);
+}
+
+static void
+tables_term_destination(j_compress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+
+ /* set tables length to number of bytes actually emitted */
+ sp->jpegtables_length -= (uint32) sp->dest.free_in_buffer;
+}
+
+static int
+TIFFjpeg_tables_dest(JPEGState* sp, TIFF* tif)
+{
+ (void) tif;
+ /*
+ * Allocate a working buffer for building tables.
+ * Initial size is 1000 bytes, which is usually adequate.
+ */
+ if (sp->jpegtables)
+ _TIFFfree(sp->jpegtables);
+ sp->jpegtables_length = 1000;
+ sp->jpegtables = (void*) _TIFFmalloc((tmsize_t) sp->jpegtables_length);
+ if (sp->jpegtables == NULL) {
+ sp->jpegtables_length = 0;
+ TIFFErrorExt(sp->tif->tif_clientdata, "TIFFjpeg_tables_dest", "No space for JPEGTables");
+ return (0);
+ }
+ sp->cinfo.c.dest = &sp->dest;
+ sp->dest.init_destination = tables_init_destination;
+ sp->dest.empty_output_buffer = tables_empty_output_buffer;
+ sp->dest.term_destination = tables_term_destination;
+ return (1);
+}
+
+/*
+ * JPEG library source data manager.
+ * These routines supply compressed data to libjpeg.
+ */
+
+static void
+std_init_source(j_decompress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+ TIFF* tif = sp->tif;
+
+ sp->src.next_input_byte = (const JOCTET*) tif->tif_rawdata;
+ sp->src.bytes_in_buffer = (size_t) tif->tif_rawcc;
+}
+
+static boolean
+std_fill_input_buffer(j_decompress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState* ) cinfo;
+ static const JOCTET dummy_EOI[2] = { 0xFF, JPEG_EOI };
+
+#ifdef IPPJ_HUFF
+ /*
+ * The Intel IPP performance library does not necessarily read the whole
+ * input buffer in one pass, so it is possible to get here with data
+ * yet to read.
+ *
+ * We just return without doing anything, until the entire buffer has
+ * been read.
+ * http://trac.osgeo.org/gdal/wiki/JpegIPP
+ */
+ if( sp->src.bytes_in_buffer > 0 ) {
+ return (TRUE);
+ }
+#endif
+
+ /*
+ * Normally the whole strip/tile is read and so we don't need to do
+ * a fill. In the case of CHUNKY_STRIP_READ_SUPPORT we might not have
+ * all the data, but the rawdata is refreshed between scanlines and
+ * we push this into the io machinery in JPEGDecode().
+ * http://trac.osgeo.org/gdal/ticket/3894
+ */
+
+ WARNMS(cinfo, JWRN_JPEG_EOF);
+ /* insert a fake EOI marker */
+ sp->src.next_input_byte = dummy_EOI;
+ sp->src.bytes_in_buffer = 2;
+ return (TRUE);
+}
+
+static void
+std_skip_input_data(j_decompress_ptr cinfo, long num_bytes)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+
+ if (num_bytes > 0) {
+ if ((size_t)num_bytes > sp->src.bytes_in_buffer) {
+ /* oops, buffer overrun */
+ (void) std_fill_input_buffer(cinfo);
+ } else {
+ sp->src.next_input_byte += (size_t) num_bytes;
+ sp->src.bytes_in_buffer -= (size_t) num_bytes;
+ }
+ }
+}
+
+static void
+std_term_source(j_decompress_ptr cinfo)
+{
+ /* No work necessary here */
+ (void) cinfo;
+}
+
+static void
+TIFFjpeg_data_src(JPEGState* sp, TIFF* tif)
+{
+ (void) tif;
+ sp->cinfo.d.src = &sp->src;
+ sp->src.init_source = std_init_source;
+ sp->src.fill_input_buffer = std_fill_input_buffer;
+ sp->src.skip_input_data = std_skip_input_data;
+ sp->src.resync_to_restart = jpeg_resync_to_restart;
+ sp->src.term_source = std_term_source;
+ sp->src.bytes_in_buffer = 0; /* for safety */
+ sp->src.next_input_byte = NULL;
+}
+
+/*
+ * Alternate source manager for reading from JPEGTables.
+ * We can share all the code except for the init routine.
+ */
+
+static void
+tables_init_source(j_decompress_ptr cinfo)
+{
+ JPEGState* sp = (JPEGState*) cinfo;
+
+ sp->src.next_input_byte = (const JOCTET*) sp->jpegtables;
+ sp->src.bytes_in_buffer = (size_t) sp->jpegtables_length;
+}
+
+static void
+TIFFjpeg_tables_src(JPEGState* sp, TIFF* tif)
+{
+ TIFFjpeg_data_src(sp, tif);
+ sp->src.init_source = tables_init_source;
+}
+
+/*
+ * Allocate downsampled-data buffers needed for downsampled I/O.
+ * We use values computed in jpeg_start_compress or jpeg_start_decompress.
+ * We use libjpeg's allocator so that buffers will be released automatically
+ * when done with strip/tile.
+ * This is also a handy place to compute samplesperclump, bytesperline.
+ */
+static int
+alloc_downsampled_buffers(TIFF* tif, jpeg_component_info* comp_info,
+ int num_components)
+{
+ JPEGState* sp = JState(tif);
+ int ci;
+ jpeg_component_info* compptr;
+ JSAMPARRAY buf;
+ int samples_per_clump = 0;
+
+ for (ci = 0, compptr = comp_info; ci < num_components;
+ ci++, compptr++) {
+ samples_per_clump += compptr->h_samp_factor *
+ compptr->v_samp_factor;
+ buf = TIFFjpeg_alloc_sarray(sp, JPOOL_IMAGE,
+ compptr->width_in_blocks * DCTSIZE,
+ (JDIMENSION) (compptr->v_samp_factor*DCTSIZE));
+ if (buf == NULL)
+ return (0);
+ sp->ds_buffer[ci] = buf;
+ }
+ sp->samplesperclump = samples_per_clump;
+ return (1);
+}
+
+
+/*
+ * JPEG Decoding.
+ */
+
+#ifdef CHECK_JPEG_YCBCR_SUBSAMPLING
+
+#define JPEG_MARKER_SOF0 0xC0
+#define JPEG_MARKER_SOF1 0xC1
+#define JPEG_MARKER_SOF3 0xC3
+#define JPEG_MARKER_DHT 0xC4
+#define JPEG_MARKER_SOI 0xD8
+#define JPEG_MARKER_SOS 0xDA
+#define JPEG_MARKER_DQT 0xDB
+#define JPEG_MARKER_DRI 0xDD
+#define JPEG_MARKER_APP0 0xE0
+#define JPEG_MARKER_COM 0xFE
+struct JPEGFixupTagsSubsamplingData
+{
+ TIFF* tif;
+ void* buffer;
+ uint32 buffersize;
+ uint8* buffercurrentbyte;
+ uint32 bufferbytesleft;
+ uint64 fileoffset;
+ uint64 filebytesleft;
+ uint8 filepositioned;
+};
+static void JPEGFixupTagsSubsampling(TIFF* tif);
+static int JPEGFixupTagsSubsamplingSec(struct JPEGFixupTagsSubsamplingData* data);
+static int JPEGFixupTagsSubsamplingReadByte(struct JPEGFixupTagsSubsamplingData* data, uint8* result);
+static int JPEGFixupTagsSubsamplingReadWord(struct JPEGFixupTagsSubsamplingData* data, uint16* result);
+static void JPEGFixupTagsSubsamplingSkip(struct JPEGFixupTagsSubsamplingData* data, uint16 skiplength);
+
+#endif
+
+static int
+JPEGFixupTags(TIFF* tif)
+{
+#ifdef CHECK_JPEG_YCBCR_SUBSAMPLING
+ if ((tif->tif_dir.td_photometric==PHOTOMETRIC_YCBCR)&&
+ (tif->tif_dir.td_planarconfig==PLANARCONFIG_CONTIG)&&
+ (tif->tif_dir.td_samplesperpixel==3))
+ JPEGFixupTagsSubsampling(tif);
+#endif
+
+ return(1);
+}
+
+#ifdef CHECK_JPEG_YCBCR_SUBSAMPLING
+
+static void
+JPEGFixupTagsSubsampling(TIFF* tif)
+{
+ /*
+ * Some JPEG-in-TIFF produces do not emit the YCBCRSUBSAMPLING values in
+ * the TIFF tags, but still use non-default (2,2) values within the jpeg
+ * data stream itself. In order for TIFF applications to work properly
+ * - for instance to get the strip buffer size right - it is imperative
+ * that the subsampling be available before we start reading the image
+ * data normally. This function will attempt to analyze the first strip in
+ * order to get the sampling values from the jpeg data stream.
+ *
+ * Note that JPEGPreDeocode() will produce a fairly loud warning when the
+ * discovered sampling does not match the default sampling (2,2) or whatever
+ * was actually in the tiff tags.
+ *
+ * See the bug in bugzilla for details:
+ *
+ * http://bugzilla.remotesensing.org/show_bug.cgi?id=168
+ *
+ * Frank Warmerdam, July 2002
+ * Joris Van Damme, May 2007
+ */
+ static const char module[] = "JPEGFixupTagsSubsampling";
+ struct JPEGFixupTagsSubsamplingData m;
+
+ _TIFFFillStriles( tif );
+
+ if( tif->tif_dir.td_stripbytecount == NULL
+ || tif->tif_dir.td_stripbytecount[0] == 0 )
+ {
+ /* Do not even try to check if the first strip/tile does not
+ yet exist, as occurs when GDAL has created a new NULL file
+ for instance. */
+ return;
+ }
+
+ m.tif=tif;
+ m.buffersize=2048;
+ m.buffer=_TIFFmalloc(m.buffersize);
+ if (m.buffer==NULL)
+ {
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "Unable to allocate memory for auto-correcting of subsampling values; auto-correcting skipped");
+ return;
+ }
+ m.buffercurrentbyte=NULL;
+ m.bufferbytesleft=0;
+ m.fileoffset=tif->tif_dir.td_stripoffset[0];
+ m.filepositioned=0;
+ m.filebytesleft=tif->tif_dir.td_stripbytecount[0];
+ if (!JPEGFixupTagsSubsamplingSec(&m))
+ TIFFWarningExt(tif->tif_clientdata,module,
+ "Unable to auto-correct subsampling values, likely corrupt JPEG compressed data in first strip/tile; auto-correcting skipped");
+ _TIFFfree(m.buffer);
+}
+
+static int
+JPEGFixupTagsSubsamplingSec(struct JPEGFixupTagsSubsamplingData* data)
+{
+ static const char module[] = "JPEGFixupTagsSubsamplingSec";
+ uint8 m;
+ while (1)
+ {
+ while (1)
+ {
+ if (!JPEGFixupTagsSubsamplingReadByte(data,&m))
+ return(0);
+ if (m==255)
+ break;
+ }
+ while (1)
+ {
+ if (!JPEGFixupTagsSubsamplingReadByte(data,&m))
+ return(0);
+ if (m!=255)
+ break;
+ }
+ switch (m)
+ {
+ case JPEG_MARKER_SOI:
+ /* this type of marker has no data and should be skipped */
+ break;
+ case JPEG_MARKER_COM:
+ case JPEG_MARKER_APP0:
+ case JPEG_MARKER_APP0+1:
+ case JPEG_MARKER_APP0+2:
+ case JPEG_MARKER_APP0+3:
+ case JPEG_MARKER_APP0+4:
+ case JPEG_MARKER_APP0+5:
+ case JPEG_MARKER_APP0+6:
+ case JPEG_MARKER_APP0+7:
+ case JPEG_MARKER_APP0+8:
+ case JPEG_MARKER_APP0+9:
+ case JPEG_MARKER_APP0+10:
+ case JPEG_MARKER_APP0+11:
+ case JPEG_MARKER_APP0+12:
+ case JPEG_MARKER_APP0+13:
+ case JPEG_MARKER_APP0+14:
+ case JPEG_MARKER_APP0+15:
+ case JPEG_MARKER_DQT:
+ case JPEG_MARKER_SOS:
+ case JPEG_MARKER_DHT:
+ case JPEG_MARKER_DRI:
+ /* this type of marker has data, but it has no use to us and should be skipped */
+ {
+ uint16 n;
+ if (!JPEGFixupTagsSubsamplingReadWord(data,&n))
+ return(0);
+ if (n<2)
+ return(0);
+ n-=2;
+ if (n>0)
+ JPEGFixupTagsSubsamplingSkip(data,n);
+ }
+ break;
+ case JPEG_MARKER_SOF0:
+ case JPEG_MARKER_SOF1:
+ /* this marker contains the subsampling factors we're scanning for */
+ {
+ uint16 n;
+ uint16 o;
+ uint8 p;
+ uint8 ph,pv;
+ if (!JPEGFixupTagsSubsamplingReadWord(data,&n))
+ return(0);
+ if (n!=8+data->tif->tif_dir.td_samplesperpixel*3)
+ return(0);
+ JPEGFixupTagsSubsamplingSkip(data,7);
+ if (!JPEGFixupTagsSubsamplingReadByte(data,&p))
+ return(0);
+ ph=(p>>4);
+ pv=(p&15);
+ JPEGFixupTagsSubsamplingSkip(data,1);
+ for (o=1; o<data->tif->tif_dir.td_samplesperpixel; o++)
+ {
+ JPEGFixupTagsSubsamplingSkip(data,1);
+ if (!JPEGFixupTagsSubsamplingReadByte(data,&p))
+ return(0);
+ if (p!=0x11)
+ {
+ TIFFWarningExt(data->tif->tif_clientdata,module,
+ "Subsampling values inside JPEG compressed data have no TIFF equivalent, auto-correction of TIFF subsampling values failed");
+ return(1);
+ }
+ JPEGFixupTagsSubsamplingSkip(data,1);
+ }
+ if (((ph!=1)&&(ph!=2)&&(ph!=4))||((pv!=1)&&(pv!=2)&&(pv!=4)))
+ {
+ TIFFWarningExt(data->tif->tif_clientdata,module,
+ "Subsampling values inside JPEG compressed data have no TIFF equivalent, auto-correction of TIFF subsampling values failed");
+ return(1);
+ }
+ if ((ph!=data->tif->tif_dir.td_ycbcrsubsampling[0])||(pv!=data->tif->tif_dir.td_ycbcrsubsampling[1]))
+ {
+ TIFFWarningExt(data->tif->tif_clientdata,module,
+ "Auto-corrected former TIFF subsampling values [%d,%d] to match subsampling values inside JPEG compressed data [%d,%d]",
+ (int)data->tif->tif_dir.td_ycbcrsubsampling[0],
+ (int)data->tif->tif_dir.td_ycbcrsubsampling[1],
+ (int)ph,(int)pv);
+ data->tif->tif_dir.td_ycbcrsubsampling[0]=ph;
+ data->tif->tif_dir.td_ycbcrsubsampling[1]=pv;
+ }
+ }
+ return(1);
+ default:
+ return(0);
+ }
+ }
+}
+
+static int
+JPEGFixupTagsSubsamplingReadByte(struct JPEGFixupTagsSubsamplingData* data, uint8* result)
+{
+ if (data->bufferbytesleft==0)
+ {
+ uint32 m;
+ if (data->filebytesleft==0)
+ return(0);
+ if (!data->filepositioned)
+ {
+ TIFFSeekFile(data->tif,data->fileoffset,SEEK_SET);
+ data->filepositioned=1;
+ }
+ m=data->buffersize;
+ if ((uint64)m>data->filebytesleft)
+ m=(uint32)data->filebytesleft;
+ assert(m<0x80000000UL);
+ if (TIFFReadFile(data->tif,data->buffer,(tmsize_t)m)!=(tmsize_t)m)
+ return(0);
+ data->buffercurrentbyte=data->buffer;
+ data->bufferbytesleft=m;
+ data->fileoffset+=m;
+ data->filebytesleft-=m;
+ }
+ *result=*data->buffercurrentbyte;
+ data->buffercurrentbyte++;
+ data->bufferbytesleft--;
+ return(1);
+}
+
+static int
+JPEGFixupTagsSubsamplingReadWord(struct JPEGFixupTagsSubsamplingData* data, uint16* result)
+{
+ uint8 ma;
+ uint8 mb;
+ if (!JPEGFixupTagsSubsamplingReadByte(data,&ma))
+ return(0);
+ if (!JPEGFixupTagsSubsamplingReadByte(data,&mb))
+ return(0);
+ *result=(ma<<8)|mb;
+ return(1);
+}
+
+static void
+JPEGFixupTagsSubsamplingSkip(struct JPEGFixupTagsSubsamplingData* data, uint16 skiplength)
+{
+ if ((uint32)skiplength<=data->bufferbytesleft)
+ {
+ data->buffercurrentbyte+=skiplength;
+ data->bufferbytesleft-=skiplength;
+ }
+ else
+ {
+ uint16 m;
+ m=skiplength-data->bufferbytesleft;
+ if (m<=data->filebytesleft)
+ {
+ data->bufferbytesleft=0;
+ data->fileoffset+=m;
+ data->filebytesleft-=m;
+ data->filepositioned=0;
+ }
+ else
+ {
+ data->bufferbytesleft=0;
+ data->filebytesleft=0;
+ }
+ }
+}
+
+#endif
+
+
+static int
+JPEGSetupDecode(TIFF* tif)
+{
+ JPEGState* sp = JState(tif);
+ TIFFDirectory *td = &tif->tif_dir;
+
+#if defined(JPEG_DUAL_MODE_8_12) && !defined(TIFFInitJPEG)
+ if( tif->tif_dir.td_bitspersample == 12 )
+ return TIFFReInitJPEG_12( tif, COMPRESSION_JPEG, 0 );
+#endif
+
+ JPEGInitializeLibJPEG( tif, TRUE );
+
+ assert(sp != NULL);
+ assert(sp->cinfo.comm.is_decompressor);
+
+ /* Read JPEGTables if it is present */
+ if (TIFFFieldSet(tif,FIELD_JPEGTABLES)) {
+ TIFFjpeg_tables_src(sp, tif);
+ if(TIFFjpeg_read_header(sp,FALSE) != JPEG_HEADER_TABLES_ONLY) {
+ TIFFErrorExt(tif->tif_clientdata, "JPEGSetupDecode", "Bogus JPEGTables field");
+ return (0);
+ }
+ }
+
+ /* Grab parameters that are same for all strips/tiles */
+ sp->photometric = td->td_photometric;
+ switch (sp->photometric) {
+ case PHOTOMETRIC_YCBCR:
+ sp->h_sampling = td->td_ycbcrsubsampling[0];
+ sp->v_sampling = td->td_ycbcrsubsampling[1];
+ break;
+ default:
+ /* TIFF 6.0 forbids subsampling of all other color spaces */
+ sp->h_sampling = 1;
+ sp->v_sampling = 1;
+ break;
+ }
+
+ /* Set up for reading normal data */
+ TIFFjpeg_data_src(sp, tif);
+ tif->tif_postdecode = _TIFFNoPostDecode; /* override byte swapping */
+ return (1);
+}
+
+/*
+ * Set up for decoding a strip or tile.
+ */
+static int
+JPEGPreDecode(TIFF* tif, uint16 s)
+{
+ JPEGState *sp = JState(tif);
+ TIFFDirectory *td = &tif->tif_dir;
+ static const char module[] = "JPEGPreDecode";
+ uint32 segment_width, segment_height;
+ int downsampled_output;
+ int ci;
+
+ assert(sp != NULL);
+
+ if (sp->cinfo.comm.is_decompressor == 0)
+ {
+ tif->tif_setupdecode( tif );
+ }
+
+ assert(sp->cinfo.comm.is_decompressor);
+ /*
+ * Reset decoder state from any previous strip/tile,
+ * in case application didn't read the whole strip.
+ */
+ if (!TIFFjpeg_abort(sp))
+ return (0);
+ /*
+ * Read the header for this strip/tile.
+ */
+
+ if (TIFFjpeg_read_header(sp, TRUE) != JPEG_HEADER_OK)
+ return (0);
+
+ tif->tif_rawcp = (uint8*) sp->src.next_input_byte;
+ tif->tif_rawcc = sp->src.bytes_in_buffer;
+
+ /*
+ * Check image parameters and set decompression parameters.
+ */
+ segment_width = td->td_imagewidth;
+ segment_height = td->td_imagelength - tif->tif_row;
+ if (isTiled(tif)) {
+ segment_width = td->td_tilewidth;
+ segment_height = td->td_tilelength;
+ sp->bytesperline = TIFFTileRowSize(tif);
+ } else {
+ if (segment_height > td->td_rowsperstrip)
+ segment_height = td->td_rowsperstrip;
+ sp->bytesperline = TIFFScanlineSize(tif);
+ }
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE && s > 0) {
+ /*
+ * For PC 2, scale down the expected strip/tile size
+ * to match a downsampled component
+ */
+ segment_width = TIFFhowmany_32(segment_width, sp->h_sampling);
+ segment_height = TIFFhowmany_32(segment_height, sp->v_sampling);
+ }
+ if (sp->cinfo.d.image_width < segment_width ||
+ sp->cinfo.d.image_height < segment_height) {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Improper JPEG strip/tile size, "
+ "expected %dx%d, got %dx%d",
+ segment_width, segment_height,
+ sp->cinfo.d.image_width,
+ sp->cinfo.d.image_height);
+ }
+ if (sp->cinfo.d.image_width > segment_width ||
+ sp->cinfo.d.image_height > segment_height) {
+ /*
+ * This case could be dangerous, if the strip or tile size has
+ * been reported as less than the amount of data jpeg will
+ * return, some potential security issues arise. Catch this
+ * case and error out.
+ */
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "JPEG strip/tile size exceeds expected dimensions,"
+ " expected %dx%d, got %dx%d",
+ segment_width, segment_height,
+ sp->cinfo.d.image_width, sp->cinfo.d.image_height);
+ return (0);
+ }
+ if (sp->cinfo.d.num_components !=
+ (td->td_planarconfig == PLANARCONFIG_CONTIG ?
+ td->td_samplesperpixel : 1)) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG component count");
+ return (0);
+ }
+#ifdef JPEG_LIB_MK1
+ if (12 != td->td_bitspersample && 8 != td->td_bitspersample) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG data precision");
+ return (0);
+ }
+ sp->cinfo.d.data_precision = td->td_bitspersample;
+ sp->cinfo.d.bits_in_jsample = td->td_bitspersample;
+#else
+ if (sp->cinfo.d.data_precision != td->td_bitspersample) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG data precision");
+ return (0);
+ }
+#endif
+ if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+ /* Component 0 should have expected sampling factors */
+ if (sp->cinfo.d.comp_info[0].h_samp_factor != sp->h_sampling ||
+ sp->cinfo.d.comp_info[0].v_samp_factor != sp->v_sampling) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Improper JPEG sampling factors %d,%d\n"
+ "Apparently should be %d,%d.",
+ sp->cinfo.d.comp_info[0].h_samp_factor,
+ sp->cinfo.d.comp_info[0].v_samp_factor,
+ sp->h_sampling, sp->v_sampling);
+ return (0);
+ }
+ /* Rest should have sampling factors 1,1 */
+ for (ci = 1; ci < sp->cinfo.d.num_components; ci++) {
+ if (sp->cinfo.d.comp_info[ci].h_samp_factor != 1 ||
+ sp->cinfo.d.comp_info[ci].v_samp_factor != 1) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG sampling factors");
+ return (0);
+ }
+ }
+ } else {
+ /* PC 2's single component should have sampling factors 1,1 */
+ if (sp->cinfo.d.comp_info[0].h_samp_factor != 1 ||
+ sp->cinfo.d.comp_info[0].v_samp_factor != 1) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG sampling factors");
+ return (0);
+ }
+ }
+ downsampled_output = FALSE;
+ if (td->td_planarconfig == PLANARCONFIG_CONTIG &&
+ sp->photometric == PHOTOMETRIC_YCBCR &&
+ sp->jpegcolormode == JPEGCOLORMODE_RGB) {
+ /* Convert YCbCr to RGB */
+ sp->cinfo.d.jpeg_color_space = JCS_YCbCr;
+ sp->cinfo.d.out_color_space = JCS_RGB;
+ } else {
+ /* Suppress colorspace handling */
+ sp->cinfo.d.jpeg_color_space = JCS_UNKNOWN;
+ sp->cinfo.d.out_color_space = JCS_UNKNOWN;
+ if (td->td_planarconfig == PLANARCONFIG_CONTIG &&
+ (sp->h_sampling != 1 || sp->v_sampling != 1))
+ downsampled_output = TRUE;
+ /* XXX what about up-sampling? */
+ }
+ if (downsampled_output) {
+ /* Need to use raw-data interface to libjpeg */
+ sp->cinfo.d.raw_data_out = TRUE;
+#if JPEG_LIB_VERSION >= 70
+ sp->cinfo.d.do_fancy_upsampling = FALSE;
+#endif /* JPEG_LIB_VERSION >= 70 */
+ tif->tif_decoderow = DecodeRowError;
+ tif->tif_decodestrip = JPEGDecodeRaw;
+ tif->tif_decodetile = JPEGDecodeRaw;
+ } else {
+ /* Use normal interface to libjpeg */
+ sp->cinfo.d.raw_data_out = FALSE;
+ tif->tif_decoderow = JPEGDecode;
+ tif->tif_decodestrip = JPEGDecode;
+ tif->tif_decodetile = JPEGDecode;
+ }
+ /* Start JPEG decompressor */
+ if (!TIFFjpeg_start_decompress(sp))
+ return (0);
+ /* Allocate downsampled-data buffers if needed */
+ if (downsampled_output) {
+ if (!alloc_downsampled_buffers(tif, sp->cinfo.d.comp_info,
+ sp->cinfo.d.num_components))
+ return (0);
+ sp->scancount = DCTSIZE; /* mark buffer empty */
+ }
+ return (1);
+}
+
+/*
+ * Decode a chunk of pixels.
+ * "Standard" case: returned data is not downsampled.
+ */
+/*ARGSUSED*/ static int
+JPEGDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+{
+ JPEGState *sp = JState(tif);
+ tmsize_t nrows;
+ (void) s;
+
+ /*
+ ** Update available information, buffer may have been refilled
+ ** between decode requests
+ */
+ sp->src.next_input_byte = (const JOCTET*) tif->tif_rawcp;
+ sp->src.bytes_in_buffer = (size_t) tif->tif_rawcc;
+
+ if( sp->bytesperline == 0 )
+ return 0;
+
+ nrows = cc / sp->bytesperline;
+ if (cc % sp->bytesperline)
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name, "fractional scanline not read");
+
+ if( nrows > (tmsize_t) sp->cinfo.d.image_height )
+ nrows = sp->cinfo.d.image_height;
+
+ /* data is expected to be read in multiples of a scanline */
+ if (nrows)
+ {
+ JSAMPROW line_work_buf = NULL;
+
+ /*
+ * For 6B, only use temporary buffer for 12 bit imagery.
+ * For Mk1 always use it.
+ */
+#if !defined(JPEG_LIB_MK1)
+ if( sp->cinfo.d.data_precision == 12 )
+#endif
+ {
+ line_work_buf = (JSAMPROW)
+ _TIFFmalloc(sizeof(short) * sp->cinfo.d.output_width
+ * sp->cinfo.d.num_components );
+ }
+
+ do {
+ if( line_work_buf != NULL )
+ {
+ /*
+ * In the MK1 case, we aways read into a 16bit buffer, and then
+ * pack down to 12bit or 8bit. In 6B case we only read into 16
+ * bit buffer for 12bit data, which we need to repack.
+ */
+ if (TIFFjpeg_read_scanlines(sp, &line_work_buf, 1) != 1)
+ return (0);
+
+ if( sp->cinfo.d.data_precision == 12 )
+ {
+ int value_pairs = (sp->cinfo.d.output_width
+ * sp->cinfo.d.num_components) / 2;
+ int iPair;
+
+ for( iPair = 0; iPair < value_pairs; iPair++ )
+ {
+ unsigned char *out_ptr =
+ ((unsigned char *) buf) + iPair * 3;
+ JSAMPLE *in_ptr = line_work_buf + iPair * 2;
+
+ out_ptr[0] = (in_ptr[0] & 0xff0) >> 4;
+ out_ptr[1] = ((in_ptr[0] & 0xf) << 4)
+ | ((in_ptr[1] & 0xf00) >> 8);
+ out_ptr[2] = ((in_ptr[1] & 0xff) >> 0);
+ }
+ }
+ else if( sp->cinfo.d.data_precision == 8 )
+ {
+ int value_count = (sp->cinfo.d.output_width
+ * sp->cinfo.d.num_components);
+ int iValue;
+
+ for( iValue = 0; iValue < value_count; iValue++ )
+ {
+ ((unsigned char *) buf)[iValue] =
+ line_work_buf[iValue] & 0xff;
+ }
+ }
+ }
+ else
+ {
+ /*
+ * In the libjpeg6b 8bit case. We read directly into the
+ * TIFF buffer.
+ */
+ JSAMPROW bufptr = (JSAMPROW)buf;
+
+ if (TIFFjpeg_read_scanlines(sp, &bufptr, 1) != 1)
+ return (0);
+ }
+
+ ++tif->tif_row;
+ buf += sp->bytesperline;
+ cc -= sp->bytesperline;
+ } while (--nrows > 0);
+
+ if( line_work_buf != NULL )
+ _TIFFfree( line_work_buf );
+ }
+
+ /* Update information on consumed data */
+ tif->tif_rawcp = (uint8*) sp->src.next_input_byte;
+ tif->tif_rawcc = sp->src.bytes_in_buffer;
+
+ /* Close down the decompressor if we've finished the strip or tile. */
+ return sp->cinfo.d.output_scanline < sp->cinfo.d.output_height
+ || TIFFjpeg_finish_decompress(sp);
+}
+
+/*ARGSUSED*/ static int
+DecodeRowError(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+
+{
+ (void) buf;
+ (void) cc;
+ (void) s;
+
+ TIFFErrorExt(tif->tif_clientdata, "TIFFReadScanline",
+ "scanline oriented access is not supported for downsampled JPEG compressed images, consider enabling TIFF_JPEGCOLORMODE as JPEGCOLORMODE_RGB." );
+ return 0;
+}
+
+/*
+ * Decode a chunk of pixels.
+ * Returned data is downsampled per sampling factors.
+ */
+/*ARGSUSED*/ static int
+JPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+{
+ JPEGState *sp = JState(tif);
+ tmsize_t nrows;
+ (void) s;
+
+ /* data is expected to be read in multiples of a scanline */
+ if ( (nrows = sp->cinfo.d.image_height) ) {
+
+ /* Cb,Cr both have sampling factors 1, so this is correct */
+ JDIMENSION clumps_per_line = sp->cinfo.d.comp_info[1].downsampled_width;
+ int samples_per_clump = sp->samplesperclump;
+
+#if defined(JPEG_LIB_MK1_OR_12BIT)
+ unsigned short* tmpbuf = _TIFFmalloc(sizeof(unsigned short) *
+ sp->cinfo.d.output_width *
+ sp->cinfo.d.num_components);
+ if(tmpbuf==NULL) {
+ TIFFErrorExt(tif->tif_clientdata, "JPEGDecodeRaw",
+ "Out of memory");
+ return 0;
+ }
+#endif
+
+ do {
+ jpeg_component_info *compptr;
+ int ci, clumpoffset;
+
+ if( cc < sp->bytesperline ) {
+ TIFFErrorExt(tif->tif_clientdata, "JPEGDecodeRaw",
+ "application buffer not large enough for all data.");
+ return 0;
+ }
+
+ /* Reload downsampled-data buffer if needed */
+ if (sp->scancount >= DCTSIZE) {
+ int n = sp->cinfo.d.max_v_samp_factor * DCTSIZE;
+ if (TIFFjpeg_read_raw_data(sp, sp->ds_buffer, n) != n)
+ return (0);
+ sp->scancount = 0;
+ }
+ /*
+ * Fastest way to unseparate data is to make one pass
+ * over the scanline for each row of each component.
+ */
+ clumpoffset = 0; /* first sample in clump */
+ for (ci = 0, compptr = sp->cinfo.d.comp_info;
+ ci < sp->cinfo.d.num_components;
+ ci++, compptr++) {
+ int hsamp = compptr->h_samp_factor;
+ int vsamp = compptr->v_samp_factor;
+ int ypos;
+
+ for (ypos = 0; ypos < vsamp; ypos++) {
+ JSAMPLE *inptr = sp->ds_buffer[ci][sp->scancount*vsamp + ypos];
+ JDIMENSION nclump;
+#if defined(JPEG_LIB_MK1_OR_12BIT)
+ JSAMPLE *outptr = (JSAMPLE*)tmpbuf + clumpoffset;
+#else
+ JSAMPLE *outptr = (JSAMPLE*)buf + clumpoffset;
+ if (cc < (tmsize_t) (clumpoffset + samples_per_clump*(clumps_per_line-1) + hsamp)) {
+ TIFFErrorExt(tif->tif_clientdata, "JPEGDecodeRaw",
+ "application buffer not large enough for all data, possible subsampling issue");
+ return 0;
+ }
+#endif
+
+ if (hsamp == 1) {
+ /* fast path for at least Cb and Cr */
+ for (nclump = clumps_per_line; nclump-- > 0; ) {
+ outptr[0] = *inptr++;
+ outptr += samples_per_clump;
+ }
+ } else {
+ int xpos;
+
+ /* general case */
+ for (nclump = clumps_per_line; nclump-- > 0; ) {
+ for (xpos = 0; xpos < hsamp; xpos++)
+ outptr[xpos] = *inptr++;
+ outptr += samples_per_clump;
+ }
+ }
+ clumpoffset += hsamp;
+ }
+ }
+
+#if defined(JPEG_LIB_MK1_OR_12BIT)
+ {
+ if (sp->cinfo.d.data_precision == 8)
+ {
+ int i=0;
+ int len = sp->cinfo.d.output_width * sp->cinfo.d.num_components;
+ for (i=0; i<len; i++)
+ {
+ ((unsigned char*)buf)[i] = tmpbuf[i] & 0xff;
+ }
+ }
+ else
+ { /* 12-bit */
+ int value_pairs = (sp->cinfo.d.output_width
+ * sp->cinfo.d.num_components) / 2;
+ int iPair;
+ for( iPair = 0; iPair < value_pairs; iPair++ )
+ {
+ unsigned char *out_ptr = ((unsigned char *) buf) + iPair * 3;
+ JSAMPLE *in_ptr = (JSAMPLE *) (tmpbuf + iPair * 2);
+ out_ptr[0] = (in_ptr[0] & 0xff0) >> 4;
+ out_ptr[1] = ((in_ptr[0] & 0xf) << 4)
+ | ((in_ptr[1] & 0xf00) >> 8);
+ out_ptr[2] = ((in_ptr[1] & 0xff) >> 0);
+ }
+ }
+ }
+#endif
+
+ sp->scancount ++;
+ tif->tif_row += sp->v_sampling;
+
+ buf += sp->bytesperline;
+ cc -= sp->bytesperline;
+
+ nrows -= sp->v_sampling;
+ } while (nrows > 0);
+
+#if defined(JPEG_LIB_MK1_OR_12BIT)
+ _TIFFfree(tmpbuf);
+#endif
+
+ }
+
+ /* Close down the decompressor if done. */
+ return sp->cinfo.d.output_scanline < sp->cinfo.d.output_height
+ || TIFFjpeg_finish_decompress(sp);
+}
+
+
+/*
+ * JPEG Encoding.
+ */
+
+static void
+unsuppress_quant_table (JPEGState* sp, int tblno)
+{
+ JQUANT_TBL* qtbl;
+
+ if ((qtbl = sp->cinfo.c.quant_tbl_ptrs[tblno]) != NULL)
+ qtbl->sent_table = FALSE;
+}
+
+static void
+unsuppress_huff_table (JPEGState* sp, int tblno)
+{
+ JHUFF_TBL* htbl;
+
+ if ((htbl = sp->cinfo.c.dc_huff_tbl_ptrs[tblno]) != NULL)
+ htbl->sent_table = FALSE;
+ if ((htbl = sp->cinfo.c.ac_huff_tbl_ptrs[tblno]) != NULL)
+ htbl->sent_table = FALSE;
+}
+
+static int
+prepare_JPEGTables(TIFF* tif)
+{
+ JPEGState* sp = JState(tif);
+
+ /* Initialize quant tables for current quality setting */
+ if (!TIFFjpeg_set_quality(sp, sp->jpegquality, FALSE))
+ return (0);
+ /* Mark only the tables we want for output */
+ /* NB: chrominance tables are currently used only with YCbCr */
+ if (!TIFFjpeg_suppress_tables(sp, TRUE))
+ return (0);
+ if (sp->jpegtablesmode & JPEGTABLESMODE_QUANT) {
+ unsuppress_quant_table(sp, 0);
+ if (sp->photometric == PHOTOMETRIC_YCBCR)
+ unsuppress_quant_table(sp, 1);
+ }
+ if (sp->jpegtablesmode & JPEGTABLESMODE_HUFF) {
+ unsuppress_huff_table(sp, 0);
+ if (sp->photometric == PHOTOMETRIC_YCBCR)
+ unsuppress_huff_table(sp, 1);
+ }
+ /* Direct libjpeg output into jpegtables */
+ if (!TIFFjpeg_tables_dest(sp, tif))
+ return (0);
+ /* Emit tables-only datastream */
+ if (!TIFFjpeg_write_tables(sp))
+ return (0);
+
+ return (1);
+}
+
+static int
+JPEGSetupEncode(TIFF* tif)
+{
+ JPEGState* sp = JState(tif);
+ TIFFDirectory *td = &tif->tif_dir;
+ static const char module[] = "JPEGSetupEncode";
+
+#if defined(JPEG_DUAL_MODE_8_12) && !defined(TIFFInitJPEG)
+ if( tif->tif_dir.td_bitspersample == 12 )
+ return TIFFReInitJPEG_12( tif, COMPRESSION_JPEG, 1 );
+#endif
+
+ JPEGInitializeLibJPEG( tif, FALSE );
+
+ assert(sp != NULL);
+ assert(!sp->cinfo.comm.is_decompressor);
+
+ /*
+ * Initialize all JPEG parameters to default values.
+ * Note that jpeg_set_defaults needs legal values for
+ * in_color_space and input_components.
+ */
+ sp->cinfo.c.in_color_space = JCS_UNKNOWN;
+ sp->cinfo.c.input_components = 1;
+ if (!TIFFjpeg_set_defaults(sp))
+ return (0);
+ /* Set per-file parameters */
+ sp->photometric = td->td_photometric;
+ switch (sp->photometric) {
+ case PHOTOMETRIC_YCBCR:
+ sp->h_sampling = td->td_ycbcrsubsampling[0];
+ sp->v_sampling = td->td_ycbcrsubsampling[1];
+ /*
+ * A ReferenceBlackWhite field *must* be present since the
+ * default value is inappropriate for YCbCr. Fill in the
+ * proper value if application didn't set it.
+ */
+ {
+ float *ref;
+ if (!TIFFGetField(tif, TIFFTAG_REFERENCEBLACKWHITE,
+ &ref)) {
+ float refbw[6];
+ long top = 1L << td->td_bitspersample;
+ refbw[0] = 0;
+ refbw[1] = (float)(top-1L);
+ refbw[2] = (float)(top>>1);
+ refbw[3] = refbw[1];
+ refbw[4] = refbw[2];
+ refbw[5] = refbw[1];
+ TIFFSetField(tif, TIFFTAG_REFERENCEBLACKWHITE,
+ refbw);
+ }
+ }
+ break;
+ case PHOTOMETRIC_PALETTE: /* disallowed by Tech Note */
+ case PHOTOMETRIC_MASK:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "PhotometricInterpretation %d not allowed for JPEG",
+ (int) sp->photometric);
+ return (0);
+ default:
+ /* TIFF 6.0 forbids subsampling of all other color spaces */
+ sp->h_sampling = 1;
+ sp->v_sampling = 1;
+ break;
+ }
+
+ /* Verify miscellaneous parameters */
+
+ /*
+ * This would need work if libtiff ever supports different
+ * depths for different components, or if libjpeg ever supports
+ * run-time selection of depth. Neither is imminent.
+ */
+#ifdef JPEG_LIB_MK1
+ /* BITS_IN_JSAMPLE now permits 8 and 12 --- dgilbert */
+ if (td->td_bitspersample != 8 && td->td_bitspersample != 12)
+#else
+ if (td->td_bitspersample != BITS_IN_JSAMPLE )
+#endif
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "BitsPerSample %d not allowed for JPEG",
+ (int) td->td_bitspersample);
+ return (0);
+ }
+ sp->cinfo.c.data_precision = td->td_bitspersample;
+#ifdef JPEG_LIB_MK1
+ sp->cinfo.c.bits_in_jsample = td->td_bitspersample;
+#endif
+ if (isTiled(tif)) {
+ if ((td->td_tilelength % (sp->v_sampling * DCTSIZE)) != 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "JPEG tile height must be multiple of %d",
+ sp->v_sampling * DCTSIZE);
+ return (0);
+ }
+ if ((td->td_tilewidth % (sp->h_sampling * DCTSIZE)) != 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "JPEG tile width must be multiple of %d",
+ sp->h_sampling * DCTSIZE);
+ return (0);
+ }
+ } else {
+ if (td->td_rowsperstrip < td->td_imagelength &&
+ (td->td_rowsperstrip % (sp->v_sampling * DCTSIZE)) != 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "RowsPerStrip must be multiple of %d for JPEG",
+ sp->v_sampling * DCTSIZE);
+ return (0);
+ }
+ }
+
+ /* Create a JPEGTables field if appropriate */
+ if (sp->jpegtablesmode & (JPEGTABLESMODE_QUANT|JPEGTABLESMODE_HUFF)) {
+ if( sp->jpegtables == NULL
+ || memcmp(sp->jpegtables,"\0\0\0\0\0\0\0\0\0",8) == 0 )
+ {
+ if (!prepare_JPEGTables(tif))
+ return (0);
+ /* Mark the field present */
+ /* Can't use TIFFSetField since BEENWRITING is already set! */
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+ TIFFSetFieldBit(tif, FIELD_JPEGTABLES);
+ }
+ } else {
+ /* We do not support application-supplied JPEGTables, */
+ /* so mark the field not present */
+ TIFFClrFieldBit(tif, FIELD_JPEGTABLES);
+ }
+
+ /* Direct libjpeg output to libtiff's output buffer */
+ TIFFjpeg_data_dest(sp, tif);
+
+ return (1);
+}
+
+/*
+ * Set encoding state at the start of a strip or tile.
+ */
+static int
+JPEGPreEncode(TIFF* tif, uint16 s)
+{
+ JPEGState *sp = JState(tif);
+ TIFFDirectory *td = &tif->tif_dir;
+ static const char module[] = "JPEGPreEncode";
+ uint32 segment_width, segment_height;
+ int downsampled_input;
+
+ assert(sp != NULL);
+
+ if (sp->cinfo.comm.is_decompressor == 1)
+ {
+ tif->tif_setupencode( tif );
+ }
+
+ assert(!sp->cinfo.comm.is_decompressor);
+ /*
+ * Set encoding parameters for this strip/tile.
+ */
+ if (isTiled(tif)) {
+ segment_width = td->td_tilewidth;
+ segment_height = td->td_tilelength;
+ sp->bytesperline = TIFFTileRowSize(tif);
+ } else {
+ segment_width = td->td_imagewidth;
+ segment_height = td->td_imagelength - tif->tif_row;
+ if (segment_height > td->td_rowsperstrip)
+ segment_height = td->td_rowsperstrip;
+ sp->bytesperline = TIFFScanlineSize(tif);
+ }
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE && s > 0) {
+ /* for PC 2, scale down the strip/tile size
+ * to match a downsampled component
+ */
+ segment_width = TIFFhowmany_32(segment_width, sp->h_sampling);
+ segment_height = TIFFhowmany_32(segment_height, sp->v_sampling);
+ }
+ if (segment_width > 65535 || segment_height > 65535) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Strip/tile too large for JPEG");
+ return (0);
+ }
+ sp->cinfo.c.image_width = segment_width;
+ sp->cinfo.c.image_height = segment_height;
+ downsampled_input = FALSE;
+ if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+ sp->cinfo.c.input_components = td->td_samplesperpixel;
+ if (sp->photometric == PHOTOMETRIC_YCBCR) {
+ if (sp->jpegcolormode == JPEGCOLORMODE_RGB) {
+ sp->cinfo.c.in_color_space = JCS_RGB;
+ } else {
+ sp->cinfo.c.in_color_space = JCS_YCbCr;
+ if (sp->h_sampling != 1 || sp->v_sampling != 1)
+ downsampled_input = TRUE;
+ }
+ if (!TIFFjpeg_set_colorspace(sp, JCS_YCbCr))
+ return (0);
+ /*
+ * Set Y sampling factors;
+ * we assume jpeg_set_colorspace() set the rest to 1
+ */
+ sp->cinfo.c.comp_info[0].h_samp_factor = sp->h_sampling;
+ sp->cinfo.c.comp_info[0].v_samp_factor = sp->v_sampling;
+ } else {
+ if ((td->td_photometric == PHOTOMETRIC_MINISWHITE || td->td_photometric == PHOTOMETRIC_MINISBLACK) && td->td_samplesperpixel == 1)
+ sp->cinfo.c.in_color_space = JCS_GRAYSCALE;
+ else if (td->td_photometric == PHOTOMETRIC_RGB && td->td_samplesperpixel == 3)
+ sp->cinfo.c.in_color_space = JCS_RGB;
+ else if (td->td_photometric == PHOTOMETRIC_SEPARATED && td->td_samplesperpixel == 4)
+ sp->cinfo.c.in_color_space = JCS_CMYK;
+ else
+ sp->cinfo.c.in_color_space = JCS_UNKNOWN;
+ if (!TIFFjpeg_set_colorspace(sp, sp->cinfo.c.in_color_space))
+ return (0);
+ /* jpeg_set_colorspace set all sampling factors to 1 */
+ }
+ } else {
+ sp->cinfo.c.input_components = 1;
+ sp->cinfo.c.in_color_space = JCS_UNKNOWN;
+ if (!TIFFjpeg_set_colorspace(sp, JCS_UNKNOWN))
+ return (0);
+ sp->cinfo.c.comp_info[0].component_id = s;
+ /* jpeg_set_colorspace() set sampling factors to 1 */
+ if (sp->photometric == PHOTOMETRIC_YCBCR && s > 0) {
+ sp->cinfo.c.comp_info[0].quant_tbl_no = 1;
+ sp->cinfo.c.comp_info[0].dc_tbl_no = 1;
+ sp->cinfo.c.comp_info[0].ac_tbl_no = 1;
+ }
+ }
+ /* ensure libjpeg won't write any extraneous markers */
+ sp->cinfo.c.write_JFIF_header = FALSE;
+ sp->cinfo.c.write_Adobe_marker = FALSE;
+ /* set up table handling correctly */
+ if (!TIFFjpeg_set_quality(sp, sp->jpegquality, FALSE))
+ return (0);
+ if (! (sp->jpegtablesmode & JPEGTABLESMODE_QUANT)) {
+ unsuppress_quant_table(sp, 0);
+ unsuppress_quant_table(sp, 1);
+ }
+ if (sp->jpegtablesmode & JPEGTABLESMODE_HUFF)
+ sp->cinfo.c.optimize_coding = FALSE;
+ else
+ sp->cinfo.c.optimize_coding = TRUE;
+ if (downsampled_input) {
+ /* Need to use raw-data interface to libjpeg */
+ sp->cinfo.c.raw_data_in = TRUE;
+ tif->tif_encoderow = JPEGEncodeRaw;
+ tif->tif_encodestrip = JPEGEncodeRaw;
+ tif->tif_encodetile = JPEGEncodeRaw;
+ } else {
+ /* Use normal interface to libjpeg */
+ sp->cinfo.c.raw_data_in = FALSE;
+ tif->tif_encoderow = JPEGEncode;
+ tif->tif_encodestrip = JPEGEncode;
+ tif->tif_encodetile = JPEGEncode;
+ }
+ /* Start JPEG compressor */
+ if (!TIFFjpeg_start_compress(sp, FALSE))
+ return (0);
+ /* Allocate downsampled-data buffers if needed */
+ if (downsampled_input) {
+ if (!alloc_downsampled_buffers(tif, sp->cinfo.c.comp_info,
+ sp->cinfo.c.num_components))
+ return (0);
+ }
+ sp->scancount = 0;
+
+ return (1);
+}
+
+/*
+ * Encode a chunk of pixels.
+ * "Standard" case: incoming data is not downsampled.
+ */
+static int
+JPEGEncode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+{
+ JPEGState *sp = JState(tif);
+ tmsize_t nrows;
+ JSAMPROW bufptr[1];
+ short *line16 = NULL;
+ int line16_count = 0;
+
+ (void) s;
+ assert(sp != NULL);
+ /* data is expected to be supplied in multiples of a scanline */
+ nrows = cc / sp->bytesperline;
+ if (cc % sp->bytesperline)
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+ "fractional scanline discarded");
+
+ /* The last strip will be limited to image size */
+ if( !isTiled(tif) && tif->tif_row+nrows > tif->tif_dir.td_imagelength )
+ nrows = tif->tif_dir.td_imagelength - tif->tif_row;
+
+ if( sp->cinfo.c.data_precision == 12 )
+ {
+ line16_count = (int)((sp->bytesperline * 2) / 3);
+ line16 = (short *) _TIFFmalloc(sizeof(short) * line16_count);
+ // FIXME: undiagnosed malloc failure
+ }
+
+ while (nrows-- > 0) {
+
+ if( sp->cinfo.c.data_precision == 12 )
+ {
+
+ int value_pairs = line16_count / 2;
+ int iPair;
+
+ bufptr[0] = (JSAMPROW) line16;
+
+ for( iPair = 0; iPair < value_pairs; iPair++ )
+ {
+ unsigned char *in_ptr =
+ ((unsigned char *) buf) + iPair * 3;
+ JSAMPLE *out_ptr = (JSAMPLE *) (line16 + iPair * 2);
+
+ out_ptr[0] = (in_ptr[0] << 4) | ((in_ptr[1] & 0xf0) >> 4);
+ out_ptr[1] = ((in_ptr[1] & 0x0f) << 8) | in_ptr[2];
+ }
+ }
+ else
+ {
+ bufptr[0] = (JSAMPROW) buf;
+ }
+ if (TIFFjpeg_write_scanlines(sp, bufptr, 1) != 1)
+ return (0);
+ if (nrows > 0)
+ tif->tif_row++;
+ buf += sp->bytesperline;
+ }
+
+ if( sp->cinfo.c.data_precision == 12 )
+ {
+ _TIFFfree( line16 );
+ }
+
+ return (1);
+}
+
+/*
+ * Encode a chunk of pixels.
+ * Incoming data is expected to be downsampled per sampling factors.
+ */
+static int
+JPEGEncodeRaw(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+{
+ JPEGState *sp = JState(tif);
+ JSAMPLE* inptr;
+ JSAMPLE* outptr;
+ tmsize_t nrows;
+ JDIMENSION clumps_per_line, nclump;
+ int clumpoffset, ci, xpos, ypos;
+ jpeg_component_info* compptr;
+ int samples_per_clump = sp->samplesperclump;
+ tmsize_t bytesperclumpline;
+
+ (void) s;
+ assert(sp != NULL);
+ /* data is expected to be supplied in multiples of a clumpline */
+ /* a clumpline is equivalent to v_sampling desubsampled scanlines */
+ /* TODO: the following calculation of bytesperclumpline, should substitute calculation of sp->bytesperline, except that it is per v_sampling lines */
+ bytesperclumpline = (((sp->cinfo.c.image_width+sp->h_sampling-1)/sp->h_sampling)
+ *(sp->h_sampling*sp->v_sampling+2)*sp->cinfo.c.data_precision+7)
+ /8;
+
+ nrows = ( cc / bytesperclumpline ) * sp->v_sampling;
+ if (cc % bytesperclumpline)
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name, "fractional scanline discarded");
+
+ /* Cb,Cr both have sampling factors 1, so this is correct */
+ clumps_per_line = sp->cinfo.c.comp_info[1].downsampled_width;
+
+ while (nrows > 0) {
+ /*
+ * Fastest way to separate the data is to make one pass
+ * over the scanline for each row of each component.
+ */
+ clumpoffset = 0; /* first sample in clump */
+ for (ci = 0, compptr = sp->cinfo.c.comp_info;
+ ci < sp->cinfo.c.num_components;
+ ci++, compptr++) {
+ int hsamp = compptr->h_samp_factor;
+ int vsamp = compptr->v_samp_factor;
+ int padding = (int) (compptr->width_in_blocks * DCTSIZE -
+ clumps_per_line * hsamp);
+ for (ypos = 0; ypos < vsamp; ypos++) {
+ inptr = ((JSAMPLE*) buf) + clumpoffset;
+ outptr = sp->ds_buffer[ci][sp->scancount*vsamp + ypos];
+ if (hsamp == 1) {
+ /* fast path for at least Cb and Cr */
+ for (nclump = clumps_per_line; nclump-- > 0; ) {
+ *outptr++ = inptr[0];
+ inptr += samples_per_clump;
+ }
+ } else {
+ /* general case */
+ for (nclump = clumps_per_line; nclump-- > 0; ) {
+ for (xpos = 0; xpos < hsamp; xpos++)
+ *outptr++ = inptr[xpos];
+ inptr += samples_per_clump;
+ }
+ }
+ /* pad each scanline as needed */
+ for (xpos = 0; xpos < padding; xpos++) {
+ *outptr = outptr[-1];
+ outptr++;
+ }
+ clumpoffset += hsamp;
+ }
+ }
+ sp->scancount++;
+ if (sp->scancount >= DCTSIZE) {
+ int n = sp->cinfo.c.max_v_samp_factor * DCTSIZE;
+ if (TIFFjpeg_write_raw_data(sp, sp->ds_buffer, n) != n)
+ return (0);
+ sp->scancount = 0;
+ }
+ tif->tif_row += sp->v_sampling;
+ buf += bytesperclumpline;
+ nrows -= sp->v_sampling;
+ }
+ return (1);
+}
+
+/*
+ * Finish up at the end of a strip or tile.
+ */
+static int
+JPEGPostEncode(TIFF* tif)
+{
+ JPEGState *sp = JState(tif);
+
+ if (sp->scancount > 0) {
+ /*
+ * Need to emit a partial bufferload of downsampled data.
+ * Pad the data vertically.
+ */
+ int ci, ypos, n;
+ jpeg_component_info* compptr;
+
+ for (ci = 0, compptr = sp->cinfo.c.comp_info;
+ ci < sp->cinfo.c.num_components;
+ ci++, compptr++) {
+ int vsamp = compptr->v_samp_factor;
+ tmsize_t row_width = compptr->width_in_blocks * DCTSIZE
+ * sizeof(JSAMPLE);
+ for (ypos = sp->scancount * vsamp;
+ ypos < DCTSIZE * vsamp; ypos++) {
+ _TIFFmemcpy((void*)sp->ds_buffer[ci][ypos],
+ (void*)sp->ds_buffer[ci][ypos-1],
+ row_width);
+
+ }
+ }
+ n = sp->cinfo.c.max_v_samp_factor * DCTSIZE;
+ if (TIFFjpeg_write_raw_data(sp, sp->ds_buffer, n) != n)
+ return (0);
+ }
+
+ return (TIFFjpeg_finish_compress(JState(tif)));
+}
+
+static void
+JPEGCleanup(TIFF* tif)
+{
+ JPEGState *sp = JState(tif);
+
+ assert(sp != 0);
+
+ tif->tif_tagmethods.vgetfield = sp->vgetparent;
+ tif->tif_tagmethods.vsetfield = sp->vsetparent;
+ tif->tif_tagmethods.printdir = sp->printdir;
+
+ if( sp != NULL ) {
+ if( sp->cinfo_initialized )
+ TIFFjpeg_destroy(sp); /* release libjpeg resources */
+ if (sp->jpegtables) /* tag value */
+ _TIFFfree(sp->jpegtables);
+ }
+ _TIFFfree(tif->tif_data); /* release local state */
+ tif->tif_data = NULL;
+
+ _TIFFSetDefaultCompressionState(tif);
+}
+
+static void
+JPEGResetUpsampled( TIFF* tif )
+{
+ JPEGState* sp = JState(tif);
+ TIFFDirectory* td = &tif->tif_dir;
+
+ /*
+ * Mark whether returned data is up-sampled or not so TIFFStripSize
+ * and TIFFTileSize return values that reflect the true amount of
+ * data.
+ */
+ tif->tif_flags &= ~TIFF_UPSAMPLED;
+ if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+ if (td->td_photometric == PHOTOMETRIC_YCBCR &&
+ sp->jpegcolormode == JPEGCOLORMODE_RGB) {
+ tif->tif_flags |= TIFF_UPSAMPLED;
+ } else {
+#ifdef notdef
+ if (td->td_ycbcrsubsampling[0] != 1 ||
+ td->td_ycbcrsubsampling[1] != 1)
+ ; /* XXX what about up-sampling? */
+#endif
+ }
+ }
+
+ /*
+ * Must recalculate cached tile size in case sampling state changed.
+ * Should we really be doing this now if image size isn't set?
+ */
+ if( tif->tif_tilesize > 0 )
+ tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tmsize_t)(-1);
+ if( tif->tif_scanlinesize > 0 )
+ tif->tif_scanlinesize = TIFFScanlineSize(tif);
+}
+
+static int
+JPEGVSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ JPEGState* sp = JState(tif);
+ const TIFFField* fip;
+ uint32 v32;
+
+ assert(sp != NULL);
+
+ switch (tag) {
+ case TIFFTAG_JPEGTABLES:
+ v32 = (uint32) va_arg(ap, uint32);
+ if (v32 == 0) {
+ /* XXX */
+ return (0);
+ }
+ _TIFFsetByteArray(&sp->jpegtables, va_arg(ap, void*),
+ (long) v32);
+ sp->jpegtables_length = v32;
+ TIFFSetFieldBit(tif, FIELD_JPEGTABLES);
+ break;
+ case TIFFTAG_JPEGQUALITY:
+ sp->jpegquality = (int) va_arg(ap, int);
+ return (1); /* pseudo tag */
+ case TIFFTAG_JPEGCOLORMODE:
+ sp->jpegcolormode = (int) va_arg(ap, int);
+ JPEGResetUpsampled( tif );
+ return (1); /* pseudo tag */
+ case TIFFTAG_PHOTOMETRIC:
+ {
+ int ret_value = (*sp->vsetparent)(tif, tag, ap);
+ JPEGResetUpsampled( tif );
+ return ret_value;
+ }
+ case TIFFTAG_JPEGTABLESMODE:
+ sp->jpegtablesmode = (int) va_arg(ap, int);
+ return (1); /* pseudo tag */
+ case TIFFTAG_YCBCRSUBSAMPLING:
+ /* mark the fact that we have a real ycbcrsubsampling! */
+ sp->ycbcrsampling_fetched = 1;
+ /* should we be recomputing upsampling info here? */
+ return (*sp->vsetparent)(tif, tag, ap);
+ default:
+ return (*sp->vsetparent)(tif, tag, ap);
+ }
+
+ if ((fip = TIFFFieldWithTag(tif, tag))) {
+ TIFFSetFieldBit(tif, fip->field_bit);
+ } else {
+ return (0);
+ }
+
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+ return (1);
+}
+
+static int
+JPEGVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ JPEGState* sp = JState(tif);
+
+ assert(sp != NULL);
+
+ switch (tag) {
+ case TIFFTAG_JPEGTABLES:
+ *va_arg(ap, uint32*) = sp->jpegtables_length;
+ *va_arg(ap, void**) = sp->jpegtables;
+ break;
+ case TIFFTAG_JPEGQUALITY:
+ *va_arg(ap, int*) = sp->jpegquality;
+ break;
+ case TIFFTAG_JPEGCOLORMODE:
+ *va_arg(ap, int*) = sp->jpegcolormode;
+ break;
+ case TIFFTAG_JPEGTABLESMODE:
+ *va_arg(ap, int*) = sp->jpegtablesmode;
+ break;
+ default:
+ return (*sp->vgetparent)(tif, tag, ap);
+ }
+ return (1);
+}
+
+static void
+JPEGPrintDir(TIFF* tif, FILE* fd, long flags)
+{
+ JPEGState* sp = JState(tif);
+
+ assert(sp != NULL);
+ (void) flags;
+
+ if( sp != NULL ) {
+ if (TIFFFieldSet(tif,FIELD_JPEGTABLES))
+ fprintf(fd, " JPEG Tables: (%lu bytes)\n",
+ (unsigned long) sp->jpegtables_length);
+ if (sp->printdir)
+ (*sp->printdir)(tif, fd, flags);
+ }
+}
+
+static uint32
+JPEGDefaultStripSize(TIFF* tif, uint32 s)
+{
+ JPEGState* sp = JState(tif);
+ TIFFDirectory *td = &tif->tif_dir;
+
+ s = (*sp->defsparent)(tif, s);
+ if (s < td->td_imagelength)
+ s = TIFFroundup_32(s, td->td_ycbcrsubsampling[1] * DCTSIZE);
+ return (s);
+}
+
+static void
+JPEGDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
+{
+ JPEGState* sp = JState(tif);
+ TIFFDirectory *td = &tif->tif_dir;
+
+ (*sp->deftparent)(tif, tw, th);
+ *tw = TIFFroundup_32(*tw, td->td_ycbcrsubsampling[0] * DCTSIZE);
+ *th = TIFFroundup_32(*th, td->td_ycbcrsubsampling[1] * DCTSIZE);
+}
+
+/*
+ * The JPEG library initialized used to be done in TIFFInitJPEG(), but
+ * now that we allow a TIFF file to be opened in update mode it is necessary
+ * to have some way of deciding whether compression or decompression is
+ * desired other than looking at tif->tif_mode. We accomplish this by
+ * examining {TILE/STRIP}BYTECOUNTS to see if there is a non-zero entry.
+ * If so, we assume decompression is desired.
+ *
+ * This is tricky, because TIFFInitJPEG() is called while the directory is
+ * being read, and generally speaking the BYTECOUNTS tag won't have been read
+ * at that point. So we try to defer jpeg library initialization till we
+ * do have that tag ... basically any access that might require the compressor
+ * or decompressor that occurs after the reading of the directory.
+ *
+ * In an ideal world compressors or decompressors would be setup
+ * at the point where a single tile or strip was accessed (for read or write)
+ * so that stuff like update of missing tiles, or replacement of tiles could
+ * be done. However, we aren't trying to crack that nut just yet ...
+ *
+ * NFW, Feb 3rd, 2003.
+ */
+
+static int JPEGInitializeLibJPEG( TIFF * tif, int decompress )
+{
+ JPEGState* sp = JState(tif);
+
+ if(sp->cinfo_initialized)
+ {
+ if( !decompress && sp->cinfo.comm.is_decompressor )
+ TIFFjpeg_destroy( sp );
+ else if( decompress && !sp->cinfo.comm.is_decompressor )
+ TIFFjpeg_destroy( sp );
+ else
+ return 1;
+
+ sp->cinfo_initialized = 0;
+ }
+
+ /*
+ * Initialize libjpeg.
+ */
+ if ( decompress ) {
+ if (!TIFFjpeg_create_decompress(sp))
+ return (0);
+ } else {
+ if (!TIFFjpeg_create_compress(sp))
+ return (0);
+ }
+
+ sp->cinfo_initialized = TRUE;
+
+ return 1;
+}
+
+int
+TIFFInitJPEG(TIFF* tif, int scheme)
+{
+ JPEGState* sp;
+
+ assert(scheme == COMPRESSION_JPEG);
+
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, jpegFields, TIFFArrayCount(jpegFields))) {
+ TIFFErrorExt(tif->tif_clientdata,
+ "TIFFInitJPEG",
+ "Merging JPEG codec-specific tags failed");
+ return 0;
+ }
+
+ /*
+ * Allocate state block so tag methods have storage to record values.
+ */
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof (JPEGState));
+
+ if (tif->tif_data == NULL) {
+ TIFFErrorExt(tif->tif_clientdata,
+ "TIFFInitJPEG", "No space for JPEG state block");
+ return 0;
+ }
+ _TIFFmemset(tif->tif_data, 0, sizeof(JPEGState));
+
+ sp = JState(tif);
+ sp->tif = tif; /* back link */
+
+ /*
+ * Override parent get/set field methods.
+ */
+ sp->vgetparent = tif->tif_tagmethods.vgetfield;
+ tif->tif_tagmethods.vgetfield = JPEGVGetField; /* hook for codec tags */
+ sp->vsetparent = tif->tif_tagmethods.vsetfield;
+ tif->tif_tagmethods.vsetfield = JPEGVSetField; /* hook for codec tags */
+ sp->printdir = tif->tif_tagmethods.printdir;
+ tif->tif_tagmethods.printdir = JPEGPrintDir; /* hook for codec tags */
+
+ /* Default values for codec-specific fields */
+ sp->jpegtables = NULL;
+ sp->jpegtables_length = 0;
+ sp->jpegquality = 75; /* Default IJG quality */
+ sp->jpegcolormode = JPEGCOLORMODE_RAW;
+ sp->jpegtablesmode = JPEGTABLESMODE_QUANT | JPEGTABLESMODE_HUFF;
+ sp->ycbcrsampling_fetched = 0;
+
+ /*
+ * Install codec methods.
+ */
+ tif->tif_fixuptags = JPEGFixupTags;
+ tif->tif_setupdecode = JPEGSetupDecode;
+ tif->tif_predecode = JPEGPreDecode;
+ tif->tif_decoderow = JPEGDecode;
+ tif->tif_decodestrip = JPEGDecode;
+ tif->tif_decodetile = JPEGDecode;
+ tif->tif_setupencode = JPEGSetupEncode;
+ tif->tif_preencode = JPEGPreEncode;
+ tif->tif_postencode = JPEGPostEncode;
+ tif->tif_encoderow = JPEGEncode;
+ tif->tif_encodestrip = JPEGEncode;
+ tif->tif_encodetile = JPEGEncode;
+ tif->tif_cleanup = JPEGCleanup;
+ sp->defsparent = tif->tif_defstripsize;
+ tif->tif_defstripsize = JPEGDefaultStripSize;
+ sp->deftparent = tif->tif_deftilesize;
+ tif->tif_deftilesize = JPEGDefaultTileSize;
+ tif->tif_flags |= TIFF_NOBITREV; /* no bit reversal, please */
+
+ sp->cinfo_initialized = FALSE;
+
+ /*
+ ** Create a JPEGTables field if no directory has yet been created.
+ ** We do this just to ensure that sufficient space is reserved for
+ ** the JPEGTables field. It will be properly created the right
+ ** size later.
+ */
+ if( tif->tif_diroff == 0 )
+ {
+#define SIZE_OF_JPEGTABLES 2000
+/*
+The following line assumes incorrectly that all JPEG-in-TIFF files will have
+a JPEGTABLES tag generated and causes null-filled JPEGTABLES tags to be written
+when the JPEG data is placed with TIFFWriteRawStrip. The field bit should be
+set, anyway, later when actual JPEGTABLES header is generated, so removing it
+here hopefully is harmless.
+ TIFFSetFieldBit(tif, FIELD_JPEGTABLES);
+*/
+ sp->jpegtables_length = SIZE_OF_JPEGTABLES;
+ sp->jpegtables = (void *) _TIFFmalloc(sp->jpegtables_length);
+ // FIXME: NULL-deref after malloc failure
+ _TIFFmemset(sp->jpegtables, 0, SIZE_OF_JPEGTABLES);
+#undef SIZE_OF_JPEGTABLES
+ }
+
+ return 1;
+}
+#endif /* JPEG_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_luv.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_luv.c
new file mode 100644
index 0000000..0c22989
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_luv.c
@@ -0,0 +1,1687 @@
+/* $Id: tif_luv.c,v 1.35 2011-04-02 20:54:09 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1997 Greg Ward Larson
+ * Copyright (c) 1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler, Greg Larson and Silicon Graphics may not be used in any
+ * advertising or publicity relating to the software without the specific,
+ * prior written permission of Sam Leffler, Greg Larson and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER, GREG LARSON OR SILICON GRAPHICS BE LIABLE
+ * FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#ifdef LOGLUV_SUPPORT
+
+/*
+ * TIFF Library.
+ * LogLuv compression support for high dynamic range images.
+ *
+ * Contributed by Greg Larson.
+ *
+ * LogLuv image support uses the TIFF library to store 16 or 10-bit
+ * log luminance values with 8 bits each of u and v or a 14-bit index.
+ *
+ * The codec can take as input and produce as output 32-bit IEEE float values
+ * as well as 16-bit integer values. A 16-bit luminance is interpreted
+ * as a sign bit followed by a 15-bit integer that is converted
+ * to and from a linear magnitude using the transformation:
+ *
+ * L = 2^( (Le+.5)/256 - 64 ) # real from 15-bit
+ *
+ * Le = floor( 256*(log2(L) + 64) ) # 15-bit from real
+ *
+ * The actual conversion to world luminance units in candelas per sq. meter
+ * requires an additional multiplier, which is stored in the TIFFTAG_STONITS.
+ * This value is usually set such that a reasonable exposure comes from
+ * clamping decoded luminances above 1 to 1 in the displayed image.
+ *
+ * The 16-bit values for u and v may be converted to real values by dividing
+ * each by 32768. (This allows for negative values, which aren't useful as
+ * far as we know, but are left in case of future improvements in human
+ * color vision.)
+ *
+ * Conversion from (u,v), which is actually the CIE (u',v') system for
+ * you color scientists, is accomplished by the following transformation:
+ *
+ * u = 4*x / (-2*x + 12*y + 3)
+ * v = 9*y / (-2*x + 12*y + 3)
+ *
+ * x = 9*u / (6*u - 16*v + 12)
+ * y = 4*v / (6*u - 16*v + 12)
+ *
+ * This process is greatly simplified by passing 32-bit IEEE floats
+ * for each of three CIE XYZ coordinates. The codec then takes care
+ * of conversion to and from LogLuv, though the application is still
+ * responsible for interpreting the TIFFTAG_STONITS calibration factor.
+ *
+ * By definition, a CIE XYZ vector of [1 1 1] corresponds to a neutral white
+ * point of (x,y)=(1/3,1/3). However, most color systems assume some other
+ * white point, such as D65, and an absolute color conversion to XYZ then
+ * to another color space with a different white point may introduce an
+ * unwanted color cast to the image. It is often desirable, therefore, to
+ * perform a white point conversion that maps the input white to [1 1 1]
+ * in XYZ, then record the original white point using the TIFFTAG_WHITEPOINT
+ * tag value. A decoder that demands absolute color calibration may use
+ * this white point tag to get back the original colors, but usually it
+ * will be ignored and the new white point will be used instead that
+ * matches the output color space.
+ *
+ * Pixel information is compressed into one of two basic encodings, depending
+ * on the setting of the compression tag, which is one of COMPRESSION_SGILOG
+ * or COMPRESSION_SGILOG24. For COMPRESSION_SGILOG, greyscale data is
+ * stored as:
+ *
+ * 1 15
+ * |-+---------------|
+ *
+ * COMPRESSION_SGILOG color data is stored as:
+ *
+ * 1 15 8 8
+ * |-+---------------|--------+--------|
+ * S Le ue ve
+ *
+ * For the 24-bit COMPRESSION_SGILOG24 color format, the data is stored as:
+ *
+ * 10 14
+ * |----------|--------------|
+ * Le' Ce
+ *
+ * There is no sign bit in the 24-bit case, and the (u,v) chromaticity is
+ * encoded as an index for optimal color resolution. The 10 log bits are
+ * defined by the following conversions:
+ *
+ * L = 2^((Le'+.5)/64 - 12) # real from 10-bit
+ *
+ * Le' = floor( 64*(log2(L) + 12) ) # 10-bit from real
+ *
+ * The 10 bits of the smaller format may be converted into the 15 bits of
+ * the larger format by multiplying by 4 and adding 13314. Obviously,
+ * a smaller range of magnitudes is covered (about 5 orders of magnitude
+ * instead of 38), and the lack of a sign bit means that negative luminances
+ * are not allowed. (Well, they aren't allowed in the real world, either,
+ * but they are useful for certain types of image processing.)
+ *
+ * The desired user format is controlled by the setting the internal
+ * pseudo tag TIFFTAG_SGILOGDATAFMT to one of:
+ * SGILOGDATAFMT_FLOAT = IEEE 32-bit float XYZ values
+ * SGILOGDATAFMT_16BIT = 16-bit integer encodings of logL, u and v
+ * Raw data i/o is also possible using:
+ * SGILOGDATAFMT_RAW = 32-bit unsigned integer with encoded pixel
+ * In addition, the following decoding is provided for ease of display:
+ * SGILOGDATAFMT_8BIT = 8-bit default RGB gamma-corrected values
+ *
+ * For grayscale images, we provide the following data formats:
+ * SGILOGDATAFMT_FLOAT = IEEE 32-bit float Y values
+ * SGILOGDATAFMT_16BIT = 16-bit integer w/ encoded luminance
+ * SGILOGDATAFMT_8BIT = 8-bit gray monitor values
+ *
+ * Note that the COMPRESSION_SGILOG applies a simple run-length encoding
+ * scheme by separating the logL, u and v bytes for each row and applying
+ * a PackBits type of compression. Since the 24-bit encoding is not
+ * adaptive, the 32-bit color format takes less space in many cases.
+ *
+ * Further control is provided over the conversion from higher-resolution
+ * formats to final encoded values through the pseudo tag
+ * TIFFTAG_SGILOGENCODE:
+ * SGILOGENCODE_NODITHER = do not dither encoded values
+ * SGILOGENCODE_RANDITHER = apply random dithering during encoding
+ *
+ * The default value of this tag is SGILOGENCODE_NODITHER for
+ * COMPRESSION_SGILOG to maximize run-length encoding and
+ * SGILOGENCODE_RANDITHER for COMPRESSION_SGILOG24 to turn
+ * quantization errors into noise.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+/*
+ * State block for each open TIFF
+ * file using LogLuv compression/decompression.
+ */
+typedef struct logLuvState LogLuvState;
+
+struct logLuvState {
+ int user_datafmt; /* user data format */
+ int encode_meth; /* encoding method */
+ int pixel_size; /* bytes per pixel */
+
+ uint8* tbuf; /* translation buffer */
+ tmsize_t tbuflen; /* buffer length */
+ void (*tfunc)(LogLuvState*, uint8*, tmsize_t);
+
+ TIFFVSetMethod vgetparent; /* super-class method */
+ TIFFVSetMethod vsetparent; /* super-class method */
+};
+
+#define DecoderState(tif) ((LogLuvState*) (tif)->tif_data)
+#define EncoderState(tif) ((LogLuvState*) (tif)->tif_data)
+
+#define SGILOGDATAFMT_UNKNOWN -1
+
+#define MINRUN 4 /* minimum run length */
+
+/*
+ * Decode a string of 16-bit gray pixels.
+ */
+static int
+LogL16Decode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
+{
+ static const char module[] = "LogL16Decode";
+ LogLuvState* sp = DecoderState(tif);
+ int shft;
+ tmsize_t i;
+ tmsize_t npixels;
+ unsigned char* bp;
+ int16* tp;
+ int16 b;
+ tmsize_t cc;
+ int rc;
+
+ assert(s == 0);
+ assert(sp != NULL);
+
+ npixels = occ / sp->pixel_size;
+
+ if (sp->user_datafmt == SGILOGDATAFMT_16BIT)
+ tp = (int16*) op;
+ else {
+ assert(sp->tbuflen >= npixels);
+ tp = (int16*) sp->tbuf;
+ }
+ _TIFFmemset((void*) tp, 0, npixels*sizeof (tp[0]));
+
+ bp = (unsigned char*) tif->tif_rawcp;
+ cc = tif->tif_rawcc;
+ /* get each byte string */
+ for (shft = 2*8; (shft -= 8) >= 0; ) {
+ for (i = 0; i < npixels && cc > 0; )
+ if (*bp >= 128) { /* run */
+ rc = *bp++ + (2-128); /* TODO: potential input buffer overrun when decoding corrupt or truncated data */
+ b = (int16)(*bp++ << shft);
+ cc -= 2;
+ while (rc-- && i < npixels)
+ tp[i++] |= b;
+ } else { /* non-run */
+ rc = *bp++; /* nul is noop */
+ while (--cc && rc-- && i < npixels)
+ tp[i++] |= (int16)*bp++ << shft;
+ }
+ if (i != npixels) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at row %lu (short %I64d pixels)",
+ (unsigned long) tif->tif_row,
+ (unsigned __int64) (npixels - i));
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at row %lu (short %llu pixels)",
+ (unsigned long) tif->tif_row,
+ (unsigned long long) (npixels - i));
+#endif
+ tif->tif_rawcp = (uint8*) bp;
+ tif->tif_rawcc = cc;
+ return (0);
+ }
+ }
+ (*sp->tfunc)(sp, op, npixels);
+ tif->tif_rawcp = (uint8*) bp;
+ tif->tif_rawcc = cc;
+ return (1);
+}
+
+/*
+ * Decode a string of 24-bit pixels.
+ */
+static int
+LogLuvDecode24(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
+{
+ static const char module[] = "LogLuvDecode24";
+ LogLuvState* sp = DecoderState(tif);
+ tmsize_t cc;
+ tmsize_t i;
+ tmsize_t npixels;
+ unsigned char* bp;
+ uint32* tp;
+
+ assert(s == 0);
+ assert(sp != NULL);
+
+ npixels = occ / sp->pixel_size;
+
+ if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+ tp = (uint32 *)op;
+ else {
+ assert(sp->tbuflen >= npixels);
+ tp = (uint32 *) sp->tbuf;
+ }
+ /* copy to array of uint32 */
+ bp = (unsigned char*) tif->tif_rawcp;
+ cc = tif->tif_rawcc;
+ for (i = 0; i < npixels && cc > 0; i++) {
+ tp[i] = bp[0] << 16 | bp[1] << 8 | bp[2];
+ bp += 3;
+ cc -= 3;
+ }
+ tif->tif_rawcp = (uint8*) bp;
+ tif->tif_rawcc = cc;
+ if (i != npixels) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at row %lu (short %I64d pixels)",
+ (unsigned long) tif->tif_row,
+ (unsigned __int64) (npixels - i));
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at row %lu (short %llu pixels)",
+ (unsigned long) tif->tif_row,
+ (unsigned long long) (npixels - i));
+#endif
+ return (0);
+ }
+ (*sp->tfunc)(sp, op, npixels);
+ return (1);
+}
+
+/*
+ * Decode a string of 32-bit pixels.
+ */
+static int
+LogLuvDecode32(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
+{
+ static const char module[] = "LogLuvDecode32";
+ LogLuvState* sp;
+ int shft;
+ tmsize_t i;
+ tmsize_t npixels;
+ unsigned char* bp;
+ uint32* tp;
+ uint32 b;
+ tmsize_t cc;
+ int rc;
+
+ assert(s == 0);
+ sp = DecoderState(tif);
+ assert(sp != NULL);
+
+ npixels = occ / sp->pixel_size;
+
+ if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+ tp = (uint32*) op;
+ else {
+ assert(sp->tbuflen >= npixels);
+ tp = (uint32*) sp->tbuf;
+ }
+ _TIFFmemset((void*) tp, 0, npixels*sizeof (tp[0]));
+
+ bp = (unsigned char*) tif->tif_rawcp;
+ cc = tif->tif_rawcc;
+ /* get each byte string */
+ for (shft = 4*8; (shft -= 8) >= 0; ) {
+ for (i = 0; i < npixels && cc > 0; )
+ if (*bp >= 128) { /* run */
+ rc = *bp++ + (2-128);
+ b = (uint32)*bp++ << shft;
+ cc -= 2; /* TODO: potential input buffer overrun when decoding corrupt or truncated data */
+ while (rc-- && i < npixels)
+ tp[i++] |= b;
+ } else { /* non-run */
+ rc = *bp++; /* nul is noop */
+ while (--cc && rc-- && i < npixels)
+ tp[i++] |= (uint32)*bp++ << shft;
+ }
+ if (i != npixels) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at row %lu (short %I64d pixels)",
+ (unsigned long) tif->tif_row,
+ (unsigned __int64) (npixels - i));
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at row %lu (short %llu pixels)",
+ (unsigned long) tif->tif_row,
+ (unsigned long long) (npixels - i));
+#endif
+ tif->tif_rawcp = (uint8*) bp;
+ tif->tif_rawcc = cc;
+ return (0);
+ }
+ }
+ (*sp->tfunc)(sp, op, npixels);
+ tif->tif_rawcp = (uint8*) bp;
+ tif->tif_rawcc = cc;
+ return (1);
+}
+
+/*
+ * Decode a strip of pixels. We break it into rows to
+ * maintain synchrony with the encode algorithm, which
+ * is row by row.
+ */
+static int
+LogLuvDecodeStrip(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ tmsize_t rowlen = TIFFScanlineSize(tif);
+
+ assert(cc%rowlen == 0);
+ while (cc && (*tif->tif_decoderow)(tif, bp, rowlen, s))
+ bp += rowlen, cc -= rowlen;
+ return (cc == 0);
+}
+
+/*
+ * Decode a tile of pixels. We break it into rows to
+ * maintain synchrony with the encode algorithm, which
+ * is row by row.
+ */
+static int
+LogLuvDecodeTile(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ tmsize_t rowlen = TIFFTileRowSize(tif);
+
+ assert(cc%rowlen == 0);
+ while (cc && (*tif->tif_decoderow)(tif, bp, rowlen, s))
+ bp += rowlen, cc -= rowlen;
+ return (cc == 0);
+}
+
+/*
+ * Encode a row of 16-bit pixels.
+ */
+static int
+LogL16Encode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ LogLuvState* sp = EncoderState(tif);
+ int shft;
+ tmsize_t i;
+ tmsize_t j;
+ tmsize_t npixels;
+ uint8* op;
+ int16* tp;
+ int16 b;
+ tmsize_t occ;
+ int rc=0, mask;
+ tmsize_t beg;
+
+ assert(s == 0);
+ assert(sp != NULL);
+ npixels = cc / sp->pixel_size;
+
+ if (sp->user_datafmt == SGILOGDATAFMT_16BIT)
+ tp = (int16*) bp;
+ else {
+ tp = (int16*) sp->tbuf;
+ assert(sp->tbuflen >= npixels);
+ (*sp->tfunc)(sp, bp, npixels);
+ }
+ /* compress each byte string */
+ op = tif->tif_rawcp;
+ occ = tif->tif_rawdatasize - tif->tif_rawcc;
+ for (shft = 2*8; (shft -= 8) >= 0; )
+ for (i = 0; i < npixels; i += rc) {
+ if (occ < 4) {
+ tif->tif_rawcp = op;
+ tif->tif_rawcc = tif->tif_rawdatasize - occ;
+ if (!TIFFFlushData1(tif))
+ return (-1);
+ op = tif->tif_rawcp;
+ occ = tif->tif_rawdatasize - tif->tif_rawcc;
+ }
+ mask = 0xff << shft; /* find next run */
+ for (beg = i; beg < npixels; beg += rc) {
+ b = (int16) (tp[beg] & mask);
+ rc = 1;
+ while (rc < 127+2 && beg+rc < npixels &&
+ (tp[beg+rc] & mask) == b)
+ rc++;
+ if (rc >= MINRUN)
+ break; /* long enough */
+ }
+ if (beg-i > 1 && beg-i < MINRUN) {
+ b = (int16) (tp[i] & mask);/*check short run */
+ j = i+1;
+ while ((tp[j++] & mask) == b)
+ if (j == beg) {
+ *op++ = (uint8)(128-2+j-i);
+ *op++ = (uint8)(b >> shft);
+ occ -= 2;
+ i = beg;
+ break;
+ }
+ }
+ while (i < beg) { /* write out non-run */
+ if ((j = beg-i) > 127) j = 127;
+ if (occ < j+3) {
+ tif->tif_rawcp = op;
+ tif->tif_rawcc = tif->tif_rawdatasize - occ;
+ if (!TIFFFlushData1(tif))
+ return (-1);
+ op = tif->tif_rawcp;
+ occ = tif->tif_rawdatasize - tif->tif_rawcc;
+ }
+ *op++ = (uint8) j; occ--;
+ while (j--) {
+ *op++ = (uint8) (tp[i++] >> shft & 0xff);
+ occ--;
+ }
+ }
+ if (rc >= MINRUN) { /* write out run */
+ *op++ = (uint8) (128-2+rc);
+ *op++ = (uint8) (tp[beg] >> shft & 0xff);
+ occ -= 2;
+ } else
+ rc = 0;
+ }
+ tif->tif_rawcp = op;
+ tif->tif_rawcc = tif->tif_rawdatasize - occ;
+
+ return (1);
+}
+
+/*
+ * Encode a row of 24-bit pixels.
+ */
+static int
+LogLuvEncode24(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ LogLuvState* sp = EncoderState(tif);
+ tmsize_t i;
+ tmsize_t npixels;
+ tmsize_t occ;
+ uint8* op;
+ uint32* tp;
+
+ assert(s == 0);
+ assert(sp != NULL);
+ npixels = cc / sp->pixel_size;
+
+ if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+ tp = (uint32*) bp;
+ else {
+ tp = (uint32*) sp->tbuf;
+ assert(sp->tbuflen >= npixels);
+ (*sp->tfunc)(sp, bp, npixels);
+ }
+ /* write out encoded pixels */
+ op = tif->tif_rawcp;
+ occ = tif->tif_rawdatasize - tif->tif_rawcc;
+ for (i = npixels; i--; ) {
+ if (occ < 3) {
+ tif->tif_rawcp = op;
+ tif->tif_rawcc = tif->tif_rawdatasize - occ;
+ if (!TIFFFlushData1(tif))
+ return (-1);
+ op = tif->tif_rawcp;
+ occ = tif->tif_rawdatasize - tif->tif_rawcc;
+ }
+ *op++ = (uint8)(*tp >> 16);
+ *op++ = (uint8)(*tp >> 8 & 0xff);
+ *op++ = (uint8)(*tp++ & 0xff);
+ occ -= 3;
+ }
+ tif->tif_rawcp = op;
+ tif->tif_rawcc = tif->tif_rawdatasize - occ;
+
+ return (1);
+}
+
+/*
+ * Encode a row of 32-bit pixels.
+ */
+static int
+LogLuvEncode32(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ LogLuvState* sp = EncoderState(tif);
+ int shft;
+ tmsize_t i;
+ tmsize_t j;
+ tmsize_t npixels;
+ uint8* op;
+ uint32* tp;
+ uint32 b;
+ tmsize_t occ;
+ int rc=0, mask;
+ tmsize_t beg;
+
+ assert(s == 0);
+ assert(sp != NULL);
+
+ npixels = cc / sp->pixel_size;
+
+ if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+ tp = (uint32*) bp;
+ else {
+ tp = (uint32*) sp->tbuf;
+ assert(sp->tbuflen >= npixels);
+ (*sp->tfunc)(sp, bp, npixels);
+ }
+ /* compress each byte string */
+ op = tif->tif_rawcp;
+ occ = tif->tif_rawdatasize - tif->tif_rawcc;
+ for (shft = 4*8; (shft -= 8) >= 0; )
+ for (i = 0; i < npixels; i += rc) {
+ if (occ < 4) {
+ tif->tif_rawcp = op;
+ tif->tif_rawcc = tif->tif_rawdatasize - occ;
+ if (!TIFFFlushData1(tif))
+ return (-1);
+ op = tif->tif_rawcp;
+ occ = tif->tif_rawdatasize - tif->tif_rawcc;
+ }
+ mask = 0xff << shft; /* find next run */
+ for (beg = i; beg < npixels; beg += rc) {
+ b = tp[beg] & mask;
+ rc = 1;
+ while (rc < 127+2 && beg+rc < npixels &&
+ (tp[beg+rc] & mask) == b)
+ rc++;
+ if (rc >= MINRUN)
+ break; /* long enough */
+ }
+ if (beg-i > 1 && beg-i < MINRUN) {
+ b = tp[i] & mask; /* check short run */
+ j = i+1;
+ while ((tp[j++] & mask) == b)
+ if (j == beg) {
+ *op++ = (uint8)(128-2+j-i);
+ *op++ = (uint8)(b >> shft);
+ occ -= 2;
+ i = beg;
+ break;
+ }
+ }
+ while (i < beg) { /* write out non-run */
+ if ((j = beg-i) > 127) j = 127;
+ if (occ < j+3) {
+ tif->tif_rawcp = op;
+ tif->tif_rawcc = tif->tif_rawdatasize - occ;
+ if (!TIFFFlushData1(tif))
+ return (-1);
+ op = tif->tif_rawcp;
+ occ = tif->tif_rawdatasize - tif->tif_rawcc;
+ }
+ *op++ = (uint8) j; occ--;
+ while (j--) {
+ *op++ = (uint8)(tp[i++] >> shft & 0xff);
+ occ--;
+ }
+ }
+ if (rc >= MINRUN) { /* write out run */
+ *op++ = (uint8) (128-2+rc);
+ *op++ = (uint8)(tp[beg] >> shft & 0xff);
+ occ -= 2;
+ } else
+ rc = 0;
+ }
+ tif->tif_rawcp = op;
+ tif->tif_rawcc = tif->tif_rawdatasize - occ;
+
+ return (1);
+}
+
+/*
+ * Encode a strip of pixels. We break it into rows to
+ * avoid encoding runs across row boundaries.
+ */
+static int
+LogLuvEncodeStrip(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ tmsize_t rowlen = TIFFScanlineSize(tif);
+
+ assert(cc%rowlen == 0);
+ while (cc && (*tif->tif_encoderow)(tif, bp, rowlen, s) == 1)
+ bp += rowlen, cc -= rowlen;
+ return (cc == 0);
+}
+
+/*
+ * Encode a tile of pixels. We break it into rows to
+ * avoid encoding runs across row boundaries.
+ */
+static int
+LogLuvEncodeTile(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ tmsize_t rowlen = TIFFTileRowSize(tif);
+
+ assert(cc%rowlen == 0);
+ while (cc && (*tif->tif_encoderow)(tif, bp, rowlen, s) == 1)
+ bp += rowlen, cc -= rowlen;
+ return (cc == 0);
+}
+
+/*
+ * Encode/Decode functions for converting to and from user formats.
+ */
+
+#include "uvcode.h"
+
+#ifndef UVSCALE
+#define U_NEU 0.210526316
+#define V_NEU 0.473684211
+#define UVSCALE 410.
+#endif
+
+#ifndef M_LN2
+#define M_LN2 0.69314718055994530942
+#endif
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+#ifndef log2
+#define log2(x) ((1./M_LN2)*log(x))
+#endif
+#define exp2(x) exp(M_LN2*(x))
+
+#define itrunc(x,m) ((m)==SGILOGENCODE_NODITHER ? \
+ (int)(x) : \
+ (int)((x) + rand()*(1./RAND_MAX) - .5))
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+double
+LogL16toY(int p16) /* compute luminance from 16-bit LogL */
+{
+ int Le = p16 & 0x7fff;
+ double Y;
+
+ if (!Le)
+ return (0.);
+ Y = exp(M_LN2/256.*(Le+.5) - M_LN2*64.);
+ return (!(p16 & 0x8000) ? Y : -Y);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+int
+LogL16fromY(double Y, int em) /* get 16-bit LogL from Y */
+{
+ if (Y >= 1.8371976e19)
+ return (0x7fff);
+ if (Y <= -1.8371976e19)
+ return (0xffff);
+ if (Y > 5.4136769e-20)
+ return itrunc(256.*(log2(Y) + 64.), em);
+ if (Y < -5.4136769e-20)
+ return (~0x7fff | itrunc(256.*(log2(-Y) + 64.), em));
+ return (0);
+}
+
+static void
+L16toY(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ int16* l16 = (int16*) sp->tbuf;
+ float* yp = (float*) op;
+
+ while (n-- > 0)
+ *yp++ = (float)LogL16toY(*l16++);
+}
+
+static void
+L16toGry(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ int16* l16 = (int16*) sp->tbuf;
+ uint8* gp = (uint8*) op;
+
+ while (n-- > 0) {
+ double Y = LogL16toY(*l16++);
+ *gp++ = (uint8) ((Y <= 0.) ? 0 : (Y >= 1.) ? 255 : (int)(256.*sqrt(Y)));
+ }
+}
+
+static void
+L16fromY(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ int16* l16 = (int16*) sp->tbuf;
+ float* yp = (float*) op;
+
+ while (n-- > 0)
+ *l16++ = (int16) (LogL16fromY(*yp++, sp->encode_meth));
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+void
+XYZtoRGB24(float xyz[3], uint8 rgb[3])
+{
+ double r, g, b;
+ /* assume CCIR-709 primaries */
+ r = 2.690*xyz[0] + -1.276*xyz[1] + -0.414*xyz[2];
+ g = -1.022*xyz[0] + 1.978*xyz[1] + 0.044*xyz[2];
+ b = 0.061*xyz[0] + -0.224*xyz[1] + 1.163*xyz[2];
+ /* assume 2.0 gamma for speed */
+ /* could use integer sqrt approx., but this is probably faster */
+ rgb[0] = (uint8)((r<=0.) ? 0 : (r >= 1.) ? 255 : (int)(256.*sqrt(r)));
+ rgb[1] = (uint8)((g<=0.) ? 0 : (g >= 1.) ? 255 : (int)(256.*sqrt(g)));
+ rgb[2] = (uint8)((b<=0.) ? 0 : (b >= 1.) ? 255 : (int)(256.*sqrt(b)));
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+double
+LogL10toY(int p10) /* compute luminance from 10-bit LogL */
+{
+ if (p10 == 0)
+ return (0.);
+ return (exp(M_LN2/64.*(p10+.5) - M_LN2*12.));
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+int
+LogL10fromY(double Y, int em) /* get 10-bit LogL from Y */
+{
+ if (Y >= 15.742)
+ return (0x3ff);
+ else if (Y <= .00024283)
+ return (0);
+ else
+ return itrunc(64.*(log2(Y) + 12.), em);
+}
+
+#define NANGLES 100
+#define uv2ang(u, v) ( (NANGLES*.499999999/M_PI) \
+ * atan2((v)-V_NEU,(u)-U_NEU) + .5*NANGLES )
+
+static int
+oog_encode(double u, double v) /* encode out-of-gamut chroma */
+{
+ static int oog_table[NANGLES];
+ static int initialized = 0;
+ register int i;
+
+ if (!initialized) { /* set up perimeter table */
+ double eps[NANGLES], ua, va, ang, epsa;
+ int ui, vi, ustep;
+ for (i = NANGLES; i--; )
+ eps[i] = 2.;
+ for (vi = UV_NVS; vi--; ) {
+ va = UV_VSTART + (vi+.5)*UV_SQSIZ;
+ ustep = uv_row[vi].nus-1;
+ if (vi == UV_NVS-1 || vi == 0 || ustep <= 0)
+ ustep = 1;
+ for (ui = uv_row[vi].nus-1; ui >= 0; ui -= ustep) {
+ ua = uv_row[vi].ustart + (ui+.5)*UV_SQSIZ;
+ ang = uv2ang(ua, va);
+ i = (int) ang;
+ epsa = fabs(ang - (i+.5));
+ if (epsa < eps[i]) {
+ oog_table[i] = uv_row[vi].ncum + ui;
+ eps[i] = epsa;
+ }
+ }
+ }
+ for (i = NANGLES; i--; ) /* fill any holes */
+ if (eps[i] > 1.5) {
+ int i1, i2;
+ for (i1 = 1; i1 < NANGLES/2; i1++)
+ if (eps[(i+i1)%NANGLES] < 1.5)
+ break;
+ for (i2 = 1; i2 < NANGLES/2; i2++)
+ if (eps[(i+NANGLES-i2)%NANGLES] < 1.5)
+ break;
+ if (i1 < i2)
+ oog_table[i] =
+ oog_table[(i+i1)%NANGLES];
+ else
+ oog_table[i] =
+ oog_table[(i+NANGLES-i2)%NANGLES];
+ }
+ initialized = 1;
+ }
+ i = (int) uv2ang(u, v); /* look up hue angle */
+ return (oog_table[i]);
+}
+
+#undef uv2ang
+#undef NANGLES
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+int
+uv_encode(double u, double v, int em) /* encode (u',v') coordinates */
+{
+ register int vi, ui;
+
+ if (v < UV_VSTART)
+ return oog_encode(u, v);
+ vi = itrunc((v - UV_VSTART)*(1./UV_SQSIZ), em);
+ if (vi >= UV_NVS)
+ return oog_encode(u, v);
+ if (u < uv_row[vi].ustart)
+ return oog_encode(u, v);
+ ui = itrunc((u - uv_row[vi].ustart)*(1./UV_SQSIZ), em);
+ if (ui >= uv_row[vi].nus)
+ return oog_encode(u, v);
+
+ return (uv_row[vi].ncum + ui);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+int
+uv_decode(double *up, double *vp, int c) /* decode (u',v') index */
+{
+ int upper, lower;
+ register int ui, vi;
+
+ if (c < 0 || c >= UV_NDIVS)
+ return (-1);
+ lower = 0; /* binary search */
+ upper = UV_NVS;
+ while (upper - lower > 1) {
+ vi = (lower + upper) >> 1;
+ ui = c - uv_row[vi].ncum;
+ if (ui > 0)
+ lower = vi;
+ else if (ui < 0)
+ upper = vi;
+ else {
+ lower = vi;
+ break;
+ }
+ }
+ vi = lower;
+ ui = c - uv_row[vi].ncum;
+ *up = uv_row[vi].ustart + (ui+.5)*UV_SQSIZ;
+ *vp = UV_VSTART + (vi+.5)*UV_SQSIZ;
+ return (0);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+void
+LogLuv24toXYZ(uint32 p, float XYZ[3])
+{
+ int Ce;
+ double L, u, v, s, x, y;
+ /* decode luminance */
+ L = LogL10toY(p>>14 & 0x3ff);
+ if (L <= 0.) {
+ XYZ[0] = XYZ[1] = XYZ[2] = 0.;
+ return;
+ }
+ /* decode color */
+ Ce = p & 0x3fff;
+ if (uv_decode(&u, &v, Ce) < 0) {
+ u = U_NEU; v = V_NEU;
+ }
+ s = 1./(6.*u - 16.*v + 12.);
+ x = 9.*u * s;
+ y = 4.*v * s;
+ /* convert to XYZ */
+ XYZ[0] = (float)(x/y * L);
+ XYZ[1] = (float)L;
+ XYZ[2] = (float)((1.-x-y)/y * L);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+uint32
+LogLuv24fromXYZ(float XYZ[3], int em)
+{
+ int Le, Ce;
+ double u, v, s;
+ /* encode luminance */
+ Le = LogL10fromY(XYZ[1], em);
+ /* encode color */
+ s = XYZ[0] + 15.*XYZ[1] + 3.*XYZ[2];
+ if (!Le || s <= 0.) {
+ u = U_NEU;
+ v = V_NEU;
+ } else {
+ u = 4.*XYZ[0] / s;
+ v = 9.*XYZ[1] / s;
+ }
+ Ce = uv_encode(u, v, em);
+ if (Ce < 0) /* never happens */
+ Ce = uv_encode(U_NEU, V_NEU, SGILOGENCODE_NODITHER);
+ /* combine encodings */
+ return (Le << 14 | Ce);
+}
+
+static void
+Luv24toXYZ(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ float* xyz = (float*) op;
+
+ while (n-- > 0) {
+ LogLuv24toXYZ(*luv, xyz);
+ xyz += 3;
+ luv++;
+ }
+}
+
+static void
+Luv24toLuv48(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ int16* luv3 = (int16*) op;
+
+ while (n-- > 0) {
+ double u, v;
+
+ *luv3++ = (int16)((*luv >> 12 & 0xffd) + 13314);
+ if (uv_decode(&u, &v, *luv&0x3fff) < 0) {
+ u = U_NEU;
+ v = V_NEU;
+ }
+ *luv3++ = (int16)(u * (1L<<15));
+ *luv3++ = (int16)(v * (1L<<15));
+ luv++;
+ }
+}
+
+static void
+Luv24toRGB(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ uint8* rgb = (uint8*) op;
+
+ while (n-- > 0) {
+ float xyz[3];
+
+ LogLuv24toXYZ(*luv++, xyz);
+ XYZtoRGB24(xyz, rgb);
+ rgb += 3;
+ }
+}
+
+static void
+Luv24fromXYZ(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ float* xyz = (float*) op;
+
+ while (n-- > 0) {
+ *luv++ = LogLuv24fromXYZ(xyz, sp->encode_meth);
+ xyz += 3;
+ }
+}
+
+static void
+Luv24fromLuv48(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ int16* luv3 = (int16*) op;
+
+ while (n-- > 0) {
+ int Le, Ce;
+
+ if (luv3[0] <= 0)
+ Le = 0;
+ else if (luv3[0] >= (1<<12)+3314)
+ Le = (1<<10) - 1;
+ else if (sp->encode_meth == SGILOGENCODE_NODITHER)
+ Le = (luv3[0]-3314) >> 2;
+ else
+ Le = itrunc(.25*(luv3[0]-3314.), sp->encode_meth);
+
+ Ce = uv_encode((luv3[1]+.5)/(1<<15), (luv3[2]+.5)/(1<<15),
+ sp->encode_meth);
+ if (Ce < 0) /* never happens */
+ Ce = uv_encode(U_NEU, V_NEU, SGILOGENCODE_NODITHER);
+ *luv++ = (uint32)Le << 14 | Ce;
+ luv3 += 3;
+ }
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+void
+LogLuv32toXYZ(uint32 p, float XYZ[3])
+{
+ double L, u, v, s, x, y;
+ /* decode luminance */
+ L = LogL16toY((int)p >> 16);
+ if (L <= 0.) {
+ XYZ[0] = XYZ[1] = XYZ[2] = 0.;
+ return;
+ }
+ /* decode color */
+ u = 1./UVSCALE * ((p>>8 & 0xff) + .5);
+ v = 1./UVSCALE * ((p & 0xff) + .5);
+ s = 1./(6.*u - 16.*v + 12.);
+ x = 9.*u * s;
+ y = 4.*v * s;
+ /* convert to XYZ */
+ XYZ[0] = (float)(x/y * L);
+ XYZ[1] = (float)L;
+ XYZ[2] = (float)((1.-x-y)/y * L);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+uint32
+LogLuv32fromXYZ(float XYZ[3], int em)
+{
+ unsigned int Le, ue, ve;
+ double u, v, s;
+ /* encode luminance */
+ Le = (unsigned int)LogL16fromY(XYZ[1], em);
+ /* encode color */
+ s = XYZ[0] + 15.*XYZ[1] + 3.*XYZ[2];
+ if (!Le || s <= 0.) {
+ u = U_NEU;
+ v = V_NEU;
+ } else {
+ u = 4.*XYZ[0] / s;
+ v = 9.*XYZ[1] / s;
+ }
+ if (u <= 0.) ue = 0;
+ else ue = itrunc(UVSCALE*u, em);
+ if (ue > 255) ue = 255;
+ if (v <= 0.) ve = 0;
+ else ve = itrunc(UVSCALE*v, em);
+ if (ve > 255) ve = 255;
+ /* combine encodings */
+ return (Le << 16 | ue << 8 | ve);
+}
+
+static void
+Luv32toXYZ(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ float* xyz = (float*) op;
+
+ while (n-- > 0) {
+ LogLuv32toXYZ(*luv++, xyz);
+ xyz += 3;
+ }
+}
+
+static void
+Luv32toLuv48(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ int16* luv3 = (int16*) op;
+
+ while (n-- > 0) {
+ double u, v;
+
+ *luv3++ = (int16)(*luv >> 16);
+ u = 1./UVSCALE * ((*luv>>8 & 0xff) + .5);
+ v = 1./UVSCALE * ((*luv & 0xff) + .5);
+ *luv3++ = (int16)(u * (1L<<15));
+ *luv3++ = (int16)(v * (1L<<15));
+ luv++;
+ }
+}
+
+static void
+Luv32toRGB(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ uint8* rgb = (uint8*) op;
+
+ while (n-- > 0) {
+ float xyz[3];
+
+ LogLuv32toXYZ(*luv++, xyz);
+ XYZtoRGB24(xyz, rgb);
+ rgb += 3;
+ }
+}
+
+static void
+Luv32fromXYZ(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ float* xyz = (float*) op;
+
+ while (n-- > 0) {
+ *luv++ = LogLuv32fromXYZ(xyz, sp->encode_meth);
+ xyz += 3;
+ }
+}
+
+static void
+Luv32fromLuv48(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ uint32* luv = (uint32*) sp->tbuf;
+ int16* luv3 = (int16*) op;
+
+ if (sp->encode_meth == SGILOGENCODE_NODITHER) {
+ while (n-- > 0) {
+ *luv++ = (uint32)luv3[0] << 16 |
+ (luv3[1]*(uint32)(UVSCALE+.5) >> 7 & 0xff00) |
+ (luv3[2]*(uint32)(UVSCALE+.5) >> 15 & 0xff);
+ luv3 += 3;
+ }
+ return;
+ }
+ while (n-- > 0) {
+ *luv++ = (uint32)luv3[0] << 16 |
+ (itrunc(luv3[1]*(UVSCALE/(1<<15)), sp->encode_meth) << 8 & 0xff00) |
+ (itrunc(luv3[2]*(UVSCALE/(1<<15)), sp->encode_meth) & 0xff);
+ luv3 += 3;
+ }
+}
+
+static void
+_logLuvNop(LogLuvState* sp, uint8* op, tmsize_t n)
+{
+ (void) sp; (void) op; (void) n;
+}
+
+static int
+LogL16GuessDataFmt(TIFFDirectory *td)
+{
+#define PACK(s,b,f) (((b)<<6)|((s)<<3)|(f))
+ switch (PACK(td->td_samplesperpixel, td->td_bitspersample, td->td_sampleformat)) {
+ case PACK(1, 32, SAMPLEFORMAT_IEEEFP):
+ return (SGILOGDATAFMT_FLOAT);
+ case PACK(1, 16, SAMPLEFORMAT_VOID):
+ case PACK(1, 16, SAMPLEFORMAT_INT):
+ case PACK(1, 16, SAMPLEFORMAT_UINT):
+ return (SGILOGDATAFMT_16BIT);
+ case PACK(1, 8, SAMPLEFORMAT_VOID):
+ case PACK(1, 8, SAMPLEFORMAT_UINT):
+ return (SGILOGDATAFMT_8BIT);
+ }
+#undef PACK
+ return (SGILOGDATAFMT_UNKNOWN);
+}
+
+static tmsize_t
+multiply_ms(tmsize_t m1, tmsize_t m2)
+{
+ tmsize_t bytes = m1 * m2;
+
+ if (m1 && bytes / m1 != m2)
+ bytes = 0;
+
+ return bytes;
+}
+
+static int
+LogL16InitState(TIFF* tif)
+{
+ static const char module[] = "LogL16InitState";
+ TIFFDirectory *td = &tif->tif_dir;
+ LogLuvState* sp = DecoderState(tif);
+
+ assert(sp != NULL);
+ assert(td->td_photometric == PHOTOMETRIC_LOGL);
+
+ /* for some reason, we can't do this in TIFFInitLogL16 */
+ if (sp->user_datafmt == SGILOGDATAFMT_UNKNOWN)
+ sp->user_datafmt = LogL16GuessDataFmt(td);
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ sp->pixel_size = sizeof (float);
+ break;
+ case SGILOGDATAFMT_16BIT:
+ sp->pixel_size = sizeof (int16);
+ break;
+ case SGILOGDATAFMT_8BIT:
+ sp->pixel_size = sizeof (uint8);
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No support for converting user data format to LogL");
+ return (0);
+ }
+ if( isTiled(tif) )
+ sp->tbuflen = multiply_ms(td->td_tilewidth, td->td_tilelength);
+ else
+ sp->tbuflen = multiply_ms(td->td_imagewidth, td->td_rowsperstrip);
+ if (multiply_ms(sp->tbuflen, sizeof (int16)) == 0 ||
+ (sp->tbuf = (uint8*) _TIFFmalloc(sp->tbuflen * sizeof (int16))) == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, module, "No space for SGILog translation buffer");
+ return (0);
+ }
+ return (1);
+}
+
+static int
+LogLuvGuessDataFmt(TIFFDirectory *td)
+{
+ int guess;
+
+ /*
+ * If the user didn't tell us their datafmt,
+ * take our best guess from the bitspersample.
+ */
+#define PACK(a,b) (((a)<<3)|(b))
+ switch (PACK(td->td_bitspersample, td->td_sampleformat)) {
+ case PACK(32, SAMPLEFORMAT_IEEEFP):
+ guess = SGILOGDATAFMT_FLOAT;
+ break;
+ case PACK(32, SAMPLEFORMAT_VOID):
+ case PACK(32, SAMPLEFORMAT_UINT):
+ case PACK(32, SAMPLEFORMAT_INT):
+ guess = SGILOGDATAFMT_RAW;
+ break;
+ case PACK(16, SAMPLEFORMAT_VOID):
+ case PACK(16, SAMPLEFORMAT_INT):
+ case PACK(16, SAMPLEFORMAT_UINT):
+ guess = SGILOGDATAFMT_16BIT;
+ break;
+ case PACK( 8, SAMPLEFORMAT_VOID):
+ case PACK( 8, SAMPLEFORMAT_UINT):
+ guess = SGILOGDATAFMT_8BIT;
+ break;
+ default:
+ guess = SGILOGDATAFMT_UNKNOWN;
+ break;
+#undef PACK
+ }
+ /*
+ * Double-check samples per pixel.
+ */
+ switch (td->td_samplesperpixel) {
+ case 1:
+ if (guess != SGILOGDATAFMT_RAW)
+ guess = SGILOGDATAFMT_UNKNOWN;
+ break;
+ case 3:
+ if (guess == SGILOGDATAFMT_RAW)
+ guess = SGILOGDATAFMT_UNKNOWN;
+ break;
+ default:
+ guess = SGILOGDATAFMT_UNKNOWN;
+ break;
+ }
+ return (guess);
+}
+
+static int
+LogLuvInitState(TIFF* tif)
+{
+ static const char module[] = "LogLuvInitState";
+ TIFFDirectory* td = &tif->tif_dir;
+ LogLuvState* sp = DecoderState(tif);
+
+ assert(sp != NULL);
+ assert(td->td_photometric == PHOTOMETRIC_LOGLUV);
+
+ /* for some reason, we can't do this in TIFFInitLogLuv */
+ if (td->td_planarconfig != PLANARCONFIG_CONTIG) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "SGILog compression cannot handle non-contiguous data");
+ return (0);
+ }
+ if (sp->user_datafmt == SGILOGDATAFMT_UNKNOWN)
+ sp->user_datafmt = LogLuvGuessDataFmt(td);
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ sp->pixel_size = 3*sizeof (float);
+ break;
+ case SGILOGDATAFMT_16BIT:
+ sp->pixel_size = 3*sizeof (int16);
+ break;
+ case SGILOGDATAFMT_RAW:
+ sp->pixel_size = sizeof (uint32);
+ break;
+ case SGILOGDATAFMT_8BIT:
+ sp->pixel_size = 3*sizeof (uint8);
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No support for converting user data format to LogLuv");
+ return (0);
+ }
+ if( isTiled(tif) )
+ sp->tbuflen = multiply_ms(td->td_tilewidth, td->td_tilelength);
+ else
+ sp->tbuflen = multiply_ms(td->td_imagewidth, td->td_rowsperstrip);
+ if (multiply_ms(sp->tbuflen, sizeof (uint32)) == 0 ||
+ (sp->tbuf = (uint8*) _TIFFmalloc(sp->tbuflen * sizeof (uint32))) == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, module, "No space for SGILog translation buffer");
+ return (0);
+ }
+ return (1);
+}
+
+static int
+LogLuvFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
+
+static int
+LogLuvSetupDecode(TIFF* tif)
+{
+ static const char module[] = "LogLuvSetupDecode";
+ LogLuvState* sp = DecoderState(tif);
+ TIFFDirectory* td = &tif->tif_dir;
+
+ tif->tif_postdecode = _TIFFNoPostDecode;
+ switch (td->td_photometric) {
+ case PHOTOMETRIC_LOGLUV:
+ if (!LogLuvInitState(tif))
+ break;
+ if (td->td_compression == COMPRESSION_SGILOG24) {
+ tif->tif_decoderow = LogLuvDecode24;
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ sp->tfunc = Luv24toXYZ;
+ break;
+ case SGILOGDATAFMT_16BIT:
+ sp->tfunc = Luv24toLuv48;
+ break;
+ case SGILOGDATAFMT_8BIT:
+ sp->tfunc = Luv24toRGB;
+ break;
+ }
+ } else {
+ tif->tif_decoderow = LogLuvDecode32;
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ sp->tfunc = Luv32toXYZ;
+ break;
+ case SGILOGDATAFMT_16BIT:
+ sp->tfunc = Luv32toLuv48;
+ break;
+ case SGILOGDATAFMT_8BIT:
+ sp->tfunc = Luv32toRGB;
+ break;
+ }
+ }
+ return (1);
+ case PHOTOMETRIC_LOGL:
+ if (!LogL16InitState(tif))
+ break;
+ tif->tif_decoderow = LogL16Decode;
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ sp->tfunc = L16toY;
+ break;
+ case SGILOGDATAFMT_8BIT:
+ sp->tfunc = L16toGry;
+ break;
+ }
+ return (1);
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Inappropriate photometric interpretation %d for SGILog compression; %s",
+ td->td_photometric, "must be either LogLUV or LogL");
+ break;
+ }
+ return (0);
+}
+
+static int
+LogLuvSetupEncode(TIFF* tif)
+{
+ static const char module[] = "LogLuvSetupEncode";
+ LogLuvState* sp = EncoderState(tif);
+ TIFFDirectory* td = &tif->tif_dir;
+
+ switch (td->td_photometric) {
+ case PHOTOMETRIC_LOGLUV:
+ if (!LogLuvInitState(tif))
+ break;
+ if (td->td_compression == COMPRESSION_SGILOG24) {
+ tif->tif_encoderow = LogLuvEncode24;
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ sp->tfunc = Luv24fromXYZ;
+ break;
+ case SGILOGDATAFMT_16BIT:
+ sp->tfunc = Luv24fromLuv48;
+ break;
+ case SGILOGDATAFMT_RAW:
+ break;
+ default:
+ goto notsupported;
+ }
+ } else {
+ tif->tif_encoderow = LogLuvEncode32;
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ sp->tfunc = Luv32fromXYZ;
+ break;
+ case SGILOGDATAFMT_16BIT:
+ sp->tfunc = Luv32fromLuv48;
+ break;
+ case SGILOGDATAFMT_RAW:
+ break;
+ default:
+ goto notsupported;
+ }
+ }
+ break;
+ case PHOTOMETRIC_LOGL:
+ if (!LogL16InitState(tif))
+ break;
+ tif->tif_encoderow = LogL16Encode;
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ sp->tfunc = L16fromY;
+ break;
+ case SGILOGDATAFMT_16BIT:
+ break;
+ default:
+ goto notsupported;
+ }
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Inappropriate photometric interpretation %d for SGILog compression; %s",
+ td->td_photometric, "must be either LogLUV or LogL");
+ break;
+ }
+ return (1);
+notsupported:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "SGILog compression supported only for %s, or raw data",
+ td->td_photometric == PHOTOMETRIC_LOGL ? "Y, L" : "XYZ, Luv");
+ return (0);
+}
+
+static void
+LogLuvClose(TIFF* tif)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+
+ /*
+ * For consistency, we always want to write out the same
+ * bitspersample and sampleformat for our TIFF file,
+ * regardless of the data format being used by the application.
+ * Since this routine is called after tags have been set but
+ * before they have been recorded in the file, we reset them here.
+ */
+ td->td_samplesperpixel =
+ (td->td_photometric == PHOTOMETRIC_LOGL) ? 1 : 3;
+ td->td_bitspersample = 16;
+ td->td_sampleformat = SAMPLEFORMAT_INT;
+}
+
+static void
+LogLuvCleanup(TIFF* tif)
+{
+ LogLuvState* sp = (LogLuvState *)tif->tif_data;
+
+ assert(sp != 0);
+
+ tif->tif_tagmethods.vgetfield = sp->vgetparent;
+ tif->tif_tagmethods.vsetfield = sp->vsetparent;
+
+ if (sp->tbuf)
+ _TIFFfree(sp->tbuf);
+ _TIFFfree(sp);
+ tif->tif_data = NULL;
+
+ _TIFFSetDefaultCompressionState(tif);
+}
+
+static int
+LogLuvVSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ static const char module[] = "LogLuvVSetField";
+ LogLuvState* sp = DecoderState(tif);
+ int bps, fmt;
+
+ switch (tag) {
+ case TIFFTAG_SGILOGDATAFMT:
+ sp->user_datafmt = (int) va_arg(ap, int);
+ /*
+ * Tweak the TIFF header so that the rest of libtiff knows what
+ * size of data will be passed between app and library, and
+ * assume that the app knows what it is doing and is not
+ * confused by these header manipulations...
+ */
+ switch (sp->user_datafmt) {
+ case SGILOGDATAFMT_FLOAT:
+ bps = 32, fmt = SAMPLEFORMAT_IEEEFP;
+ break;
+ case SGILOGDATAFMT_16BIT:
+ bps = 16, fmt = SAMPLEFORMAT_INT;
+ break;
+ case SGILOGDATAFMT_RAW:
+ bps = 32, fmt = SAMPLEFORMAT_UINT;
+ TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 1);
+ break;
+ case SGILOGDATAFMT_8BIT:
+ bps = 8, fmt = SAMPLEFORMAT_UINT;
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Unknown data format %d for LogLuv compression",
+ sp->user_datafmt);
+ return (0);
+ }
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps);
+ TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, fmt);
+ /*
+ * Must recalculate sizes should bits/sample change.
+ */
+ tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tmsize_t) -1;
+ tif->tif_scanlinesize = TIFFScanlineSize(tif);
+ return (1);
+ case TIFFTAG_SGILOGENCODE:
+ sp->encode_meth = (int) va_arg(ap, int);
+ if (sp->encode_meth != SGILOGENCODE_NODITHER &&
+ sp->encode_meth != SGILOGENCODE_RANDITHER) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Unknown encoding %d for LogLuv compression",
+ sp->encode_meth);
+ return (0);
+ }
+ return (1);
+ default:
+ return (*sp->vsetparent)(tif, tag, ap);
+ }
+}
+
+static int
+LogLuvVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ LogLuvState *sp = (LogLuvState *)tif->tif_data;
+
+ switch (tag) {
+ case TIFFTAG_SGILOGDATAFMT:
+ *va_arg(ap, int*) = sp->user_datafmt;
+ return (1);
+ default:
+ return (*sp->vgetparent)(tif, tag, ap);
+ }
+}
+
+static const TIFFField LogLuvFields[] = {
+ { TIFFTAG_SGILOGDATAFMT, 0, 0, TIFF_SHORT, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "SGILogDataFmt", NULL},
+ { TIFFTAG_SGILOGENCODE, 0, 0, TIFF_SHORT, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "SGILogEncode", NULL}
+};
+
+int
+TIFFInitSGILog(TIFF* tif, int scheme)
+{
+ static const char module[] = "TIFFInitSGILog";
+ LogLuvState* sp;
+
+ assert(scheme == COMPRESSION_SGILOG24 || scheme == COMPRESSION_SGILOG);
+
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, LogLuvFields,
+ TIFFArrayCount(LogLuvFields))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Merging SGILog codec-specific tags failed");
+ return 0;
+ }
+
+ /*
+ * Allocate state block so tag methods have storage to record values.
+ */
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof (LogLuvState));
+ if (tif->tif_data == NULL)
+ goto bad;
+ sp = (LogLuvState*) tif->tif_data;
+ _TIFFmemset((void*)sp, 0, sizeof (*sp));
+ sp->user_datafmt = SGILOGDATAFMT_UNKNOWN;
+ sp->encode_meth = (scheme == COMPRESSION_SGILOG24) ?
+ SGILOGENCODE_RANDITHER : SGILOGENCODE_NODITHER;
+ sp->tfunc = _logLuvNop;
+
+ /*
+ * Install codec methods.
+ * NB: tif_decoderow & tif_encoderow are filled
+ * in at setup time.
+ */
+ tif->tif_fixuptags = LogLuvFixupTags;
+ tif->tif_setupdecode = LogLuvSetupDecode;
+ tif->tif_decodestrip = LogLuvDecodeStrip;
+ tif->tif_decodetile = LogLuvDecodeTile;
+ tif->tif_setupencode = LogLuvSetupEncode;
+ tif->tif_encodestrip = LogLuvEncodeStrip;
+ tif->tif_encodetile = LogLuvEncodeTile;
+ tif->tif_close = LogLuvClose;
+ tif->tif_cleanup = LogLuvCleanup;
+
+ /*
+ * Override parent get/set field methods.
+ */
+ sp->vgetparent = tif->tif_tagmethods.vgetfield;
+ tif->tif_tagmethods.vgetfield = LogLuvVGetField; /* hook for codec tags */
+ sp->vsetparent = tif->tif_tagmethods.vsetfield;
+ tif->tif_tagmethods.vsetfield = LogLuvVSetField; /* hook for codec tags */
+
+ return (1);
+bad:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: No space for LogLuv state block", tif->tif_name);
+ return (0);
+}
+#endif /* LOGLUV_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_lzw.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_lzw.c
new file mode 100644
index 0000000..5c9ab0b
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_lzw.c
@@ -0,0 +1,1169 @@
+/* $Id: tif_lzw.c,v 1.45 2011-04-02 20:54:09 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#ifdef LZW_SUPPORT
+/*
+ * TIFF Library.
+ * Rev 5.0 Lempel-Ziv & Welch Compression Support
+ *
+ * This code is derived from the compress program whose code is
+ * derived from software contributed to Berkeley by James A. Woods,
+ * derived from original work by Spencer Thomas and Joseph Orost.
+ *
+ * The original Berkeley copyright notice appears below in its entirety.
+ */
+#include "tif_predict.h"
+
+#include <stdio.h>
+
+/*
+ * NB: The 5.0 spec describes a different algorithm than Aldus
+ * implements. Specifically, Aldus does code length transitions
+ * one code earlier than should be done (for real LZW).
+ * Earlier versions of this library implemented the correct
+ * LZW algorithm, but emitted codes in a bit order opposite
+ * to the TIFF spec. Thus, to maintain compatibility w/ Aldus
+ * we interpret MSB-LSB ordered codes to be images written w/
+ * old versions of this library, but otherwise adhere to the
+ * Aldus "off by one" algorithm.
+ *
+ * Future revisions to the TIFF spec are expected to "clarify this issue".
+ */
+#define LZW_COMPAT /* include backwards compatibility code */
+/*
+ * Each strip of data is supposed to be terminated by a CODE_EOI.
+ * If the following #define is included, the decoder will also
+ * check for end-of-strip w/o seeing this code. This makes the
+ * library more robust, but also slower.
+ */
+#define LZW_CHECKEOS /* include checks for strips w/o EOI code */
+
+#define MAXCODE(n) ((1L<<(n))-1)
+/*
+ * The TIFF spec specifies that encoded bit
+ * strings range from 9 to 12 bits.
+ */
+#define BITS_MIN 9 /* start with 9 bits */
+#define BITS_MAX 12 /* max of 12 bit strings */
+/* predefined codes */
+#define CODE_CLEAR 256 /* code to clear string table */
+#define CODE_EOI 257 /* end-of-information code */
+#define CODE_FIRST 258 /* first free code entry */
+#define CODE_MAX MAXCODE(BITS_MAX)
+#define HSIZE 9001L /* 91% occupancy */
+#define HSHIFT (13-8)
+#ifdef LZW_COMPAT
+/* NB: +1024 is for compatibility with old files */
+#define CSIZE (MAXCODE(BITS_MAX)+1024L)
+#else
+#define CSIZE (MAXCODE(BITS_MAX)+1L)
+#endif
+
+/*
+ * State block for each open TIFF file using LZW
+ * compression/decompression. Note that the predictor
+ * state block must be first in this data structure.
+ */
+typedef struct {
+ TIFFPredictorState predict; /* predictor super class */
+
+ unsigned short nbits; /* # of bits/code */
+ unsigned short maxcode; /* maximum code for lzw_nbits */
+ unsigned short free_ent; /* next free entry in hash table */
+ long nextdata; /* next bits of i/o */
+ long nextbits; /* # of valid bits in lzw_nextdata */
+
+ int rw_mode; /* preserve rw_mode from init */
+} LZWBaseState;
+
+#define lzw_nbits base.nbits
+#define lzw_maxcode base.maxcode
+#define lzw_free_ent base.free_ent
+#define lzw_nextdata base.nextdata
+#define lzw_nextbits base.nextbits
+
+/*
+ * Encoding-specific state.
+ */
+typedef uint16 hcode_t; /* codes fit in 16 bits */
+typedef struct {
+ long hash;
+ hcode_t code;
+} hash_t;
+
+/*
+ * Decoding-specific state.
+ */
+typedef struct code_ent {
+ struct code_ent *next;
+ unsigned short length; /* string len, including this token */
+ unsigned char value; /* data value */
+ unsigned char firstchar; /* first token of string */
+} code_t;
+
+typedef int (*decodeFunc)(TIFF*, uint8*, tmsize_t, uint16);
+
+typedef struct {
+ LZWBaseState base;
+
+ /* Decoding specific data */
+ long dec_nbitsmask; /* lzw_nbits 1 bits, right adjusted */
+ long dec_restart; /* restart count */
+#ifdef LZW_CHECKEOS
+ uint64 dec_bitsleft; /* available bits in raw data */
+#endif
+ decodeFunc dec_decode; /* regular or backwards compatible */
+ code_t* dec_codep; /* current recognized code */
+ code_t* dec_oldcodep; /* previously recognized code */
+ code_t* dec_free_entp; /* next free entry */
+ code_t* dec_maxcodep; /* max available entry */
+ code_t* dec_codetab; /* kept separate for small machines */
+
+ /* Encoding specific data */
+ int enc_oldcode; /* last code encountered */
+ long enc_checkpoint; /* point at which to clear table */
+#define CHECK_GAP 10000 /* enc_ratio check interval */
+ long enc_ratio; /* current compression ratio */
+ long enc_incount; /* (input) data bytes encoded */
+ long enc_outcount; /* encoded (output) bytes */
+ uint8* enc_rawlimit; /* bound on tif_rawdata buffer */
+ hash_t* enc_hashtab; /* kept separate for small machines */
+} LZWCodecState;
+
+#define LZWState(tif) ((LZWBaseState*) (tif)->tif_data)
+#define DecoderState(tif) ((LZWCodecState*) LZWState(tif))
+#define EncoderState(tif) ((LZWCodecState*) LZWState(tif))
+
+static int LZWDecode(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
+#ifdef LZW_COMPAT
+static int LZWDecodeCompat(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
+#endif
+static void cl_hash(LZWCodecState*);
+
+/*
+ * LZW Decoder.
+ */
+
+#ifdef LZW_CHECKEOS
+/*
+ * This check shouldn't be necessary because each
+ * strip is suppose to be terminated with CODE_EOI.
+ */
+#define NextCode(_tif, _sp, _bp, _code, _get) { \
+ if ((_sp)->dec_bitsleft < (uint64)nbits) { \
+ TIFFWarningExt(_tif->tif_clientdata, module, \
+ "LZWDecode: Strip %d not terminated with EOI code", \
+ _tif->tif_curstrip); \
+ _code = CODE_EOI; \
+ } else { \
+ _get(_sp,_bp,_code); \
+ (_sp)->dec_bitsleft -= nbits; \
+ } \
+}
+#else
+#define NextCode(tif, sp, bp, code, get) get(sp, bp, code)
+#endif
+
+static int
+LZWFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
+
+static int
+LZWSetupDecode(TIFF* tif)
+{
+ static const char module[] = "LZWSetupDecode";
+ LZWCodecState* sp = DecoderState(tif);
+ int code;
+
+ if( sp == NULL )
+ {
+ /*
+ * Allocate state block so tag methods have storage to record
+ * values.
+ */
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof(LZWCodecState));
+ if (tif->tif_data == NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "No space for LZW state block");
+ return (0);
+ }
+
+ DecoderState(tif)->dec_codetab = NULL;
+ DecoderState(tif)->dec_decode = NULL;
+
+ /*
+ * Setup predictor setup.
+ */
+ (void) TIFFPredictorInit(tif);
+
+ sp = DecoderState(tif);
+ }
+
+ assert(sp != NULL);
+
+ if (sp->dec_codetab == NULL) {
+ sp->dec_codetab = (code_t*)_TIFFmalloc(CSIZE*sizeof (code_t));
+ if (sp->dec_codetab == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for LZW code table");
+ return (0);
+ }
+ /*
+ * Pre-load the table.
+ */
+ code = 255;
+ do {
+ sp->dec_codetab[code].value = code;
+ sp->dec_codetab[code].firstchar = code;
+ sp->dec_codetab[code].length = 1;
+ sp->dec_codetab[code].next = NULL;
+ } while (code--);
+ /*
+ * Zero-out the unused entries
+ */
+ _TIFFmemset(&sp->dec_codetab[CODE_CLEAR], 0,
+ (CODE_FIRST - CODE_CLEAR) * sizeof (code_t));
+ }
+ return (1);
+}
+
+/*
+ * Setup state for decoding a strip.
+ */
+static int
+LZWPreDecode(TIFF* tif, uint16 s)
+{
+ static const char module[] = "LZWPreDecode";
+ LZWCodecState *sp = DecoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+ if( sp->dec_codetab == NULL )
+ {
+ tif->tif_setupdecode( tif );
+ }
+
+ /*
+ * Check for old bit-reversed codes.
+ */
+ if (tif->tif_rawdata[0] == 0 && (tif->tif_rawdata[1] & 0x1)) {
+#ifdef LZW_COMPAT
+ if (!sp->dec_decode) {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Old-style LZW codes, convert file");
+ /*
+ * Override default decoding methods with
+ * ones that deal with the old coding.
+ * Otherwise the predictor versions set
+ * above will call the compatibility routines
+ * through the dec_decode method.
+ */
+ tif->tif_decoderow = LZWDecodeCompat;
+ tif->tif_decodestrip = LZWDecodeCompat;
+ tif->tif_decodetile = LZWDecodeCompat;
+ /*
+ * If doing horizontal differencing, must
+ * re-setup the predictor logic since we
+ * switched the basic decoder methods...
+ */
+ (*tif->tif_setupdecode)(tif);
+ sp->dec_decode = LZWDecodeCompat;
+ }
+ sp->lzw_maxcode = MAXCODE(BITS_MIN);
+#else /* !LZW_COMPAT */
+ if (!sp->dec_decode) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Old-style LZW codes not supported");
+ sp->dec_decode = LZWDecode;
+ }
+ return (0);
+#endif/* !LZW_COMPAT */
+ } else {
+ sp->lzw_maxcode = MAXCODE(BITS_MIN)-1;
+ sp->dec_decode = LZWDecode;
+ }
+ sp->lzw_nbits = BITS_MIN;
+ sp->lzw_nextbits = 0;
+ sp->lzw_nextdata = 0;
+
+ sp->dec_restart = 0;
+ sp->dec_nbitsmask = MAXCODE(BITS_MIN);
+#ifdef LZW_CHECKEOS
+ sp->dec_bitsleft = ((uint64)tif->tif_rawcc) << 3;
+#endif
+ sp->dec_free_entp = sp->dec_codetab + CODE_FIRST;
+ /*
+ * Zero entries that are not yet filled in. We do
+ * this to guard against bogus input data that causes
+ * us to index into undefined entries. If you can
+ * come up with a way to safely bounds-check input codes
+ * while decoding then you can remove this operation.
+ */
+ _TIFFmemset(sp->dec_free_entp, 0, (CSIZE-CODE_FIRST)*sizeof (code_t));
+ sp->dec_oldcodep = &sp->dec_codetab[-1];
+ sp->dec_maxcodep = &sp->dec_codetab[sp->dec_nbitsmask-1];
+ return (1);
+}
+
+/*
+ * Decode a "hunk of data".
+ */
+#define GetNextCode(sp, bp, code) { \
+ nextdata = (nextdata<<8) | *(bp)++; \
+ nextbits += 8; \
+ if (nextbits < nbits) { \
+ nextdata = (nextdata<<8) | *(bp)++; \
+ nextbits += 8; \
+ } \
+ code = (hcode_t)((nextdata >> (nextbits-nbits)) & nbitsmask); \
+ nextbits -= nbits; \
+}
+
+static void
+codeLoop(TIFF* tif, const char* module)
+{
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Bogus encoding, loop in the code table; scanline %d",
+ tif->tif_row);
+}
+
+static int
+LZWDecode(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
+{
+ static const char module[] = "LZWDecode";
+ LZWCodecState *sp = DecoderState(tif);
+ char *op = (char*) op0;
+ long occ = (long) occ0;
+ char *tp;
+ unsigned char *bp;
+ hcode_t code;
+ int len;
+ long nbits, nextbits, nextdata, nbitsmask;
+ code_t *codep, *free_entp, *maxcodep, *oldcodep;
+
+ (void) s;
+ assert(sp != NULL);
+ assert(sp->dec_codetab != NULL);
+
+ /*
+ Fail if value does not fit in long.
+ */
+ if ((tmsize_t) occ != occ0)
+ return (0);
+ /*
+ * Restart interrupted output operation.
+ */
+ if (sp->dec_restart) {
+ long residue;
+
+ codep = sp->dec_codep;
+ residue = codep->length - sp->dec_restart;
+ if (residue > occ) {
+ /*
+ * Residue from previous decode is sufficient
+ * to satisfy decode request. Skip to the
+ * start of the decoded string, place decoded
+ * values in the output buffer, and return.
+ */
+ sp->dec_restart += occ;
+ do {
+ codep = codep->next;
+ } while (--residue > occ && codep);
+ if (codep) {
+ tp = op + occ;
+ do {
+ *--tp = codep->value;
+ codep = codep->next;
+ } while (--occ && codep);
+ }
+ return (1);
+ }
+ /*
+ * Residue satisfies only part of the decode request.
+ */
+ op += residue, occ -= residue;
+ tp = op;
+ do {
+ int t;
+ --tp;
+ t = codep->value;
+ codep = codep->next;
+ *tp = t;
+ } while (--residue && codep);
+ sp->dec_restart = 0;
+ }
+
+ bp = (unsigned char *)tif->tif_rawcp;
+ nbits = sp->lzw_nbits;
+ nextdata = sp->lzw_nextdata;
+ nextbits = sp->lzw_nextbits;
+ nbitsmask = sp->dec_nbitsmask;
+ oldcodep = sp->dec_oldcodep;
+ free_entp = sp->dec_free_entp;
+ maxcodep = sp->dec_maxcodep;
+
+ while (occ > 0) {
+ NextCode(tif, sp, bp, code, GetNextCode);
+ if (code == CODE_EOI)
+ break;
+ if (code == CODE_CLEAR) {
+ free_entp = sp->dec_codetab + CODE_FIRST;
+ _TIFFmemset(free_entp, 0,
+ (CSIZE - CODE_FIRST) * sizeof (code_t));
+ nbits = BITS_MIN;
+ nbitsmask = MAXCODE(BITS_MIN);
+ maxcodep = sp->dec_codetab + nbitsmask-1;
+ NextCode(tif, sp, bp, code, GetNextCode);
+ if (code == CODE_EOI)
+ break;
+ if (code >= CODE_CLEAR) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "LZWDecode: Corrupted LZW table at scanline %d",
+ tif->tif_row);
+ return (0);
+ }
+ *op++ = (char)code, occ--;
+ oldcodep = sp->dec_codetab + code;
+ continue;
+ }
+ codep = sp->dec_codetab + code;
+
+ /*
+ * Add the new entry to the code table.
+ */
+ if (free_entp < &sp->dec_codetab[0] ||
+ free_entp >= &sp->dec_codetab[CSIZE]) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Corrupted LZW table at scanline %d",
+ tif->tif_row);
+ return (0);
+ }
+
+ free_entp->next = oldcodep;
+ if (free_entp->next < &sp->dec_codetab[0] ||
+ free_entp->next >= &sp->dec_codetab[CSIZE]) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Corrupted LZW table at scanline %d",
+ tif->tif_row);
+ return (0);
+ }
+ free_entp->firstchar = free_entp->next->firstchar;
+ free_entp->length = free_entp->next->length+1;
+ free_entp->value = (codep < free_entp) ?
+ codep->firstchar : free_entp->firstchar;
+ if (++free_entp > maxcodep) {
+ if (++nbits > BITS_MAX) /* should not happen */
+ nbits = BITS_MAX;
+ nbitsmask = MAXCODE(nbits);
+ maxcodep = sp->dec_codetab + nbitsmask-1;
+ }
+ oldcodep = codep;
+ if (code >= 256) {
+ /*
+ * Code maps to a string, copy string
+ * value to output (written in reverse).
+ */
+ if(codep->length == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Wrong length of decoded string: "
+ "data probably corrupted at scanline %d",
+ tif->tif_row);
+ return (0);
+ }
+ if (codep->length > occ) {
+ /*
+ * String is too long for decode buffer,
+ * locate portion that will fit, copy to
+ * the decode buffer, and setup restart
+ * logic for the next decoding call.
+ */
+ sp->dec_codep = codep;
+ do {
+ codep = codep->next;
+ } while (codep && codep->length > occ);
+ if (codep) {
+ sp->dec_restart = (long)occ;
+ tp = op + occ;
+ do {
+ *--tp = codep->value;
+ codep = codep->next;
+ } while (--occ && codep);
+ if (codep)
+ codeLoop(tif, module);
+ }
+ break;
+ }
+ len = codep->length;
+ tp = op + len;
+ do {
+ int t;
+ --tp;
+ t = codep->value;
+ codep = codep->next;
+ *tp = t;
+ } while (codep && tp > op);
+ if (codep) {
+ codeLoop(tif, module);
+ break;
+ }
+ assert(occ >= len);
+ op += len, occ -= len;
+ } else
+ *op++ = (char)code, occ--;
+ }
+
+ tif->tif_rawcp = (uint8*) bp;
+ sp->lzw_nbits = (unsigned short) nbits;
+ sp->lzw_nextdata = nextdata;
+ sp->lzw_nextbits = nextbits;
+ sp->dec_nbitsmask = nbitsmask;
+ sp->dec_oldcodep = oldcodep;
+ sp->dec_free_entp = free_entp;
+ sp->dec_maxcodep = maxcodep;
+
+ if (occ > 0) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %d (short %I64d bytes)",
+ tif->tif_row, (unsigned __int64) occ);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %d (short %llu bytes)",
+ tif->tif_row, (unsigned long long) occ);
+#endif
+ return (0);
+ }
+ return (1);
+}
+
+#ifdef LZW_COMPAT
+/*
+ * Decode a "hunk of data" for old images.
+ */
+#define GetNextCodeCompat(sp, bp, code) { \
+ nextdata |= (unsigned long) *(bp)++ << nextbits; \
+ nextbits += 8; \
+ if (nextbits < nbits) { \
+ nextdata |= (unsigned long) *(bp)++ << nextbits;\
+ nextbits += 8; \
+ } \
+ code = (hcode_t)(nextdata & nbitsmask); \
+ nextdata >>= nbits; \
+ nextbits -= nbits; \
+}
+
+static int
+LZWDecodeCompat(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
+{
+ static const char module[] = "LZWDecodeCompat";
+ LZWCodecState *sp = DecoderState(tif);
+ char *op = (char*) op0;
+ long occ = (long) occ0;
+ char *tp;
+ unsigned char *bp;
+ int code, nbits;
+ long nextbits, nextdata, nbitsmask;
+ code_t *codep, *free_entp, *maxcodep, *oldcodep;
+
+ (void) s;
+ assert(sp != NULL);
+
+ /*
+ Fail if value does not fit in long.
+ */
+ if ((tmsize_t) occ != occ0)
+ return (0);
+
+ /*
+ * Restart interrupted output operation.
+ */
+ if (sp->dec_restart) {
+ long residue;
+
+ codep = sp->dec_codep;
+ residue = codep->length - sp->dec_restart;
+ if (residue > occ) {
+ /*
+ * Residue from previous decode is sufficient
+ * to satisfy decode request. Skip to the
+ * start of the decoded string, place decoded
+ * values in the output buffer, and return.
+ */
+ sp->dec_restart += occ;
+ do {
+ codep = codep->next;
+ } while (--residue > occ);
+ tp = op + occ;
+ do {
+ *--tp = codep->value;
+ codep = codep->next;
+ } while (--occ);
+ return (1);
+ }
+ /*
+ * Residue satisfies only part of the decode request.
+ */
+ op += residue, occ -= residue;
+ tp = op;
+ do {
+ *--tp = codep->value;
+ codep = codep->next;
+ } while (--residue);
+ sp->dec_restart = 0;
+ }
+
+ bp = (unsigned char *)tif->tif_rawcp;
+ nbits = sp->lzw_nbits;
+ nextdata = sp->lzw_nextdata;
+ nextbits = sp->lzw_nextbits;
+ nbitsmask = sp->dec_nbitsmask;
+ oldcodep = sp->dec_oldcodep;
+ free_entp = sp->dec_free_entp;
+ maxcodep = sp->dec_maxcodep;
+
+ while (occ > 0) {
+ NextCode(tif, sp, bp, code, GetNextCodeCompat);
+ if (code == CODE_EOI)
+ break;
+ if (code == CODE_CLEAR) {
+ free_entp = sp->dec_codetab + CODE_FIRST;
+ _TIFFmemset(free_entp, 0,
+ (CSIZE - CODE_FIRST) * sizeof (code_t));
+ nbits = BITS_MIN;
+ nbitsmask = MAXCODE(BITS_MIN);
+ maxcodep = sp->dec_codetab + nbitsmask;
+ NextCode(tif, sp, bp, code, GetNextCodeCompat);
+ if (code == CODE_EOI)
+ break;
+ if (code >= CODE_CLEAR) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "LZWDecode: Corrupted LZW table at scanline %d",
+ tif->tif_row);
+ return (0);
+ }
+ *op++ = code, occ--;
+ oldcodep = sp->dec_codetab + code;
+ continue;
+ }
+ codep = sp->dec_codetab + code;
+
+ /*
+ * Add the new entry to the code table.
+ */
+ if (free_entp < &sp->dec_codetab[0] ||
+ free_entp >= &sp->dec_codetab[CSIZE]) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Corrupted LZW table at scanline %d", tif->tif_row);
+ return (0);
+ }
+
+ free_entp->next = oldcodep;
+ if (free_entp->next < &sp->dec_codetab[0] ||
+ free_entp->next >= &sp->dec_codetab[CSIZE]) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Corrupted LZW table at scanline %d", tif->tif_row);
+ return (0);
+ }
+ free_entp->firstchar = free_entp->next->firstchar;
+ free_entp->length = free_entp->next->length+1;
+ free_entp->value = (codep < free_entp) ?
+ codep->firstchar : free_entp->firstchar;
+ if (++free_entp > maxcodep) {
+ if (++nbits > BITS_MAX) /* should not happen */
+ nbits = BITS_MAX;
+ nbitsmask = MAXCODE(nbits);
+ maxcodep = sp->dec_codetab + nbitsmask;
+ }
+ oldcodep = codep;
+ if (code >= 256) {
+ /*
+ * Code maps to a string, copy string
+ * value to output (written in reverse).
+ */
+ if(codep->length == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Wrong length of decoded "
+ "string: data probably corrupted at scanline %d",
+ tif->tif_row);
+ return (0);
+ }
+ if (codep->length > occ) {
+ /*
+ * String is too long for decode buffer,
+ * locate portion that will fit, copy to
+ * the decode buffer, and setup restart
+ * logic for the next decoding call.
+ */
+ sp->dec_codep = codep;
+ do {
+ codep = codep->next;
+ } while (codep->length > occ);
+ sp->dec_restart = occ;
+ tp = op + occ;
+ do {
+ *--tp = codep->value;
+ codep = codep->next;
+ } while (--occ);
+ break;
+ }
+ assert(occ >= codep->length);
+ op += codep->length, occ -= codep->length;
+ tp = op;
+ do {
+ *--tp = codep->value;
+ } while( (codep = codep->next) != NULL );
+ } else
+ *op++ = code, occ--;
+ }
+
+ tif->tif_rawcp = (uint8*) bp;
+ sp->lzw_nbits = nbits;
+ sp->lzw_nextdata = nextdata;
+ sp->lzw_nextbits = nextbits;
+ sp->dec_nbitsmask = nbitsmask;
+ sp->dec_oldcodep = oldcodep;
+ sp->dec_free_entp = free_entp;
+ sp->dec_maxcodep = maxcodep;
+
+ if (occ > 0) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %d (short %I64d bytes)",
+ tif->tif_row, (unsigned __int64) occ);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %d (short %llu bytes)",
+ tif->tif_row, (unsigned long long) occ);
+#endif
+ return (0);
+ }
+ return (1);
+}
+#endif /* LZW_COMPAT */
+
+/*
+ * LZW Encoding.
+ */
+
+static int
+LZWSetupEncode(TIFF* tif)
+{
+ static const char module[] = "LZWSetupEncode";
+ LZWCodecState* sp = EncoderState(tif);
+
+ assert(sp != NULL);
+ sp->enc_hashtab = (hash_t*) _TIFFmalloc(HSIZE*sizeof (hash_t));
+ if (sp->enc_hashtab == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for LZW hash table");
+ return (0);
+ }
+ return (1);
+}
+
+/*
+ * Reset encoding state at the start of a strip.
+ */
+static int
+LZWPreEncode(TIFF* tif, uint16 s)
+{
+ LZWCodecState *sp = EncoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+
+ if( sp->enc_hashtab == NULL )
+ {
+ tif->tif_setupencode( tif );
+ }
+
+ sp->lzw_nbits = BITS_MIN;
+ sp->lzw_maxcode = MAXCODE(BITS_MIN);
+ sp->lzw_free_ent = CODE_FIRST;
+ sp->lzw_nextbits = 0;
+ sp->lzw_nextdata = 0;
+ sp->enc_checkpoint = CHECK_GAP;
+ sp->enc_ratio = 0;
+ sp->enc_incount = 0;
+ sp->enc_outcount = 0;
+ /*
+ * The 4 here insures there is space for 2 max-sized
+ * codes in LZWEncode and LZWPostDecode.
+ */
+ sp->enc_rawlimit = tif->tif_rawdata + tif->tif_rawdatasize-1 - 4;
+ cl_hash(sp); /* clear hash table */
+ sp->enc_oldcode = (hcode_t) -1; /* generates CODE_CLEAR in LZWEncode */
+ return (1);
+}
+
+#define CALCRATIO(sp, rat) { \
+ if (incount > 0x007fffff) { /* NB: shift will overflow */\
+ rat = outcount >> 8; \
+ rat = (rat == 0 ? 0x7fffffff : incount/rat); \
+ } else \
+ rat = (incount<<8) / outcount; \
+}
+#define PutNextCode(op, c) { \
+ nextdata = (nextdata << nbits) | c; \
+ nextbits += nbits; \
+ *op++ = (unsigned char)(nextdata >> (nextbits-8)); \
+ nextbits -= 8; \
+ if (nextbits >= 8) { \
+ *op++ = (unsigned char)(nextdata >> (nextbits-8)); \
+ nextbits -= 8; \
+ } \
+ outcount += nbits; \
+}
+
+/*
+ * Encode a chunk of pixels.
+ *
+ * Uses an open addressing double hashing (no chaining) on the
+ * prefix code/next character combination. We do a variant of
+ * Knuth's algorithm D (vol. 3, sec. 6.4) along with G. Knott's
+ * relatively-prime secondary probe. Here, the modular division
+ * first probe is gives way to a faster exclusive-or manipulation.
+ * Also do block compression with an adaptive reset, whereby the
+ * code table is cleared when the compression ratio decreases,
+ * but after the table fills. The variable-length output codes
+ * are re-sized at this point, and a CODE_CLEAR is generated
+ * for the decoder.
+ */
+static int
+LZWEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ register LZWCodecState *sp = EncoderState(tif);
+ register long fcode;
+ register hash_t *hp;
+ register int h, c;
+ hcode_t ent;
+ long disp;
+ long incount, outcount, checkpoint;
+ long nextdata, nextbits;
+ int free_ent, maxcode, nbits;
+ uint8* op;
+ uint8* limit;
+
+ (void) s;
+ if (sp == NULL)
+ return (0);
+
+ assert(sp->enc_hashtab != NULL);
+
+ /*
+ * Load local state.
+ */
+ incount = sp->enc_incount;
+ outcount = sp->enc_outcount;
+ checkpoint = sp->enc_checkpoint;
+ nextdata = sp->lzw_nextdata;
+ nextbits = sp->lzw_nextbits;
+ free_ent = sp->lzw_free_ent;
+ maxcode = sp->lzw_maxcode;
+ nbits = sp->lzw_nbits;
+ op = tif->tif_rawcp;
+ limit = sp->enc_rawlimit;
+ ent = sp->enc_oldcode;
+
+ if (ent == (hcode_t) -1 && cc > 0) {
+ /*
+ * NB: This is safe because it can only happen
+ * at the start of a strip where we know there
+ * is space in the data buffer.
+ */
+ PutNextCode(op, CODE_CLEAR);
+ ent = *bp++; cc--; incount++;
+ }
+ while (cc > 0) {
+ c = *bp++; cc--; incount++;
+ fcode = ((long)c << BITS_MAX) + ent;
+ h = (c << HSHIFT) ^ ent; /* xor hashing */
+#ifdef _WINDOWS
+ /*
+ * Check hash index for an overflow.
+ */
+ if (h >= HSIZE)
+ h -= HSIZE;
+#endif
+ hp = &sp->enc_hashtab[h];
+ if (hp->hash == fcode) {
+ ent = hp->code;
+ continue;
+ }
+ if (hp->hash >= 0) {
+ /*
+ * Primary hash failed, check secondary hash.
+ */
+ disp = HSIZE - h;
+ if (h == 0)
+ disp = 1;
+ do {
+ /*
+ * Avoid pointer arithmetic 'cuz of
+ * wraparound problems with segments.
+ */
+ if ((h -= disp) < 0)
+ h += HSIZE;
+ hp = &sp->enc_hashtab[h];
+ if (hp->hash == fcode) {
+ ent = hp->code;
+ goto hit;
+ }
+ } while (hp->hash >= 0);
+ }
+ /*
+ * New entry, emit code and add to table.
+ */
+ /*
+ * Verify there is space in the buffer for the code
+ * and any potential Clear code that might be emitted
+ * below. The value of limit is setup so that there
+ * are at least 4 bytes free--room for 2 codes.
+ */
+ if (op > limit) {
+ tif->tif_rawcc = (tmsize_t)(op - tif->tif_rawdata);
+ TIFFFlushData1(tif);
+ op = tif->tif_rawdata;
+ }
+ PutNextCode(op, ent);
+ ent = c;
+ hp->code = free_ent++;
+ hp->hash = fcode;
+ if (free_ent == CODE_MAX-1) {
+ /* table is full, emit clear code and reset */
+ cl_hash(sp);
+ sp->enc_ratio = 0;
+ incount = 0;
+ outcount = 0;
+ free_ent = CODE_FIRST;
+ PutNextCode(op, CODE_CLEAR);
+ nbits = BITS_MIN;
+ maxcode = MAXCODE(BITS_MIN);
+ } else {
+ /*
+ * If the next entry is going to be too big for
+ * the code size, then increase it, if possible.
+ */
+ if (free_ent > maxcode) {
+ nbits++;
+ assert(nbits <= BITS_MAX);
+ maxcode = (int) MAXCODE(nbits);
+ } else if (incount >= checkpoint) {
+ long rat;
+ /*
+ * Check compression ratio and, if things seem
+ * to be slipping, clear the hash table and
+ * reset state. The compression ratio is a
+ * 24+8-bit fractional number.
+ */
+ checkpoint = incount+CHECK_GAP;
+ CALCRATIO(sp, rat);
+ if (rat <= sp->enc_ratio) {
+ cl_hash(sp);
+ sp->enc_ratio = 0;
+ incount = 0;
+ outcount = 0;
+ free_ent = CODE_FIRST;
+ PutNextCode(op, CODE_CLEAR);
+ nbits = BITS_MIN;
+ maxcode = MAXCODE(BITS_MIN);
+ } else
+ sp->enc_ratio = rat;
+ }
+ }
+ hit:
+ ;
+ }
+
+ /*
+ * Restore global state.
+ */
+ sp->enc_incount = incount;
+ sp->enc_outcount = outcount;
+ sp->enc_checkpoint = checkpoint;
+ sp->enc_oldcode = ent;
+ sp->lzw_nextdata = nextdata;
+ sp->lzw_nextbits = nextbits;
+ sp->lzw_free_ent = free_ent;
+ sp->lzw_maxcode = maxcode;
+ sp->lzw_nbits = nbits;
+ tif->tif_rawcp = op;
+ return (1);
+}
+
+/*
+ * Finish off an encoded strip by flushing the last
+ * string and tacking on an End Of Information code.
+ */
+static int
+LZWPostEncode(TIFF* tif)
+{
+ register LZWCodecState *sp = EncoderState(tif);
+ uint8* op = tif->tif_rawcp;
+ long nextbits = sp->lzw_nextbits;
+ long nextdata = sp->lzw_nextdata;
+ long outcount = sp->enc_outcount;
+ int nbits = sp->lzw_nbits;
+
+ if (op > sp->enc_rawlimit) {
+ tif->tif_rawcc = (tmsize_t)(op - tif->tif_rawdata);
+ TIFFFlushData1(tif);
+ op = tif->tif_rawdata;
+ }
+ if (sp->enc_oldcode != (hcode_t) -1) {
+ PutNextCode(op, sp->enc_oldcode);
+ sp->enc_oldcode = (hcode_t) -1;
+ }
+ PutNextCode(op, CODE_EOI);
+ if (nextbits > 0)
+ *op++ = (unsigned char)(nextdata << (8-nextbits));
+ tif->tif_rawcc = (tmsize_t)(op - tif->tif_rawdata);
+ return (1);
+}
+
+/*
+ * Reset encoding hash table.
+ */
+static void
+cl_hash(LZWCodecState* sp)
+{
+ register hash_t *hp = &sp->enc_hashtab[HSIZE-1];
+ register long i = HSIZE-8;
+
+ do {
+ i -= 8;
+ hp[-7].hash = -1;
+ hp[-6].hash = -1;
+ hp[-5].hash = -1;
+ hp[-4].hash = -1;
+ hp[-3].hash = -1;
+ hp[-2].hash = -1;
+ hp[-1].hash = -1;
+ hp[ 0].hash = -1;
+ hp -= 8;
+ } while (i >= 0);
+ for (i += 8; i > 0; i--, hp--)
+ hp->hash = -1;
+}
+
+static void
+LZWCleanup(TIFF* tif)
+{
+ (void)TIFFPredictorCleanup(tif);
+
+ assert(tif->tif_data != 0);
+
+ if (DecoderState(tif)->dec_codetab)
+ _TIFFfree(DecoderState(tif)->dec_codetab);
+
+ if (EncoderState(tif)->enc_hashtab)
+ _TIFFfree(EncoderState(tif)->enc_hashtab);
+
+ _TIFFfree(tif->tif_data);
+ tif->tif_data = NULL;
+
+ _TIFFSetDefaultCompressionState(tif);
+}
+
+int
+TIFFInitLZW(TIFF* tif, int scheme)
+{
+ static const char module[] = "TIFFInitLZW";
+ assert(scheme == COMPRESSION_LZW);
+ /*
+ * Allocate state block so tag methods have storage to record values.
+ */
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof (LZWCodecState));
+ if (tif->tif_data == NULL)
+ goto bad;
+ DecoderState(tif)->dec_codetab = NULL;
+ DecoderState(tif)->dec_decode = NULL;
+ EncoderState(tif)->enc_hashtab = NULL;
+ LZWState(tif)->rw_mode = tif->tif_mode;
+
+ /*
+ * Install codec methods.
+ */
+ tif->tif_fixuptags = LZWFixupTags;
+ tif->tif_setupdecode = LZWSetupDecode;
+ tif->tif_predecode = LZWPreDecode;
+ tif->tif_decoderow = LZWDecode;
+ tif->tif_decodestrip = LZWDecode;
+ tif->tif_decodetile = LZWDecode;
+ tif->tif_setupencode = LZWSetupEncode;
+ tif->tif_preencode = LZWPreEncode;
+ tif->tif_postencode = LZWPostEncode;
+ tif->tif_encoderow = LZWEncode;
+ tif->tif_encodestrip = LZWEncode;
+ tif->tif_encodetile = LZWEncode;
+ tif->tif_cleanup = LZWCleanup;
+ /*
+ * Setup predictor setup.
+ */
+ (void) TIFFPredictorInit(tif);
+ return (1);
+bad:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for LZW state block");
+ return (0);
+}
+
+/*
+ * Copyright (c) 1985, 1986 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * James A. Woods, derived from original work by Spencer Thomas
+ * and Joseph Orost.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+#endif /* LZW_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_next.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_next.c
new file mode 100644
index 0000000..8c4fec4
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_next.c
@@ -0,0 +1,162 @@
+/* $Id: tif_next.c,v 1.13 2010-03-10 18:56:48 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#ifdef NEXT_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * NeXT 2-bit Grey Scale Compression Algorithm Support
+ */
+
+#define SETPIXEL(op, v) { \
+ switch (npixels++ & 3) { \
+ case 0: op[0] = (unsigned char) ((v) << 6); break; \
+ case 1: op[0] |= (v) << 4; break; \
+ case 2: op[0] |= (v) << 2; break; \
+ case 3: *op++ |= (v); break; \
+ } \
+}
+
+#define LITERALROW 0x00
+#define LITERALSPAN 0x40
+#define WHITE ((1<<2)-1)
+
+static int
+NeXTDecode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
+{
+ static const char module[] = "NeXTDecode";
+ unsigned char *bp, *op;
+ tmsize_t cc;
+ uint8* row;
+ tmsize_t scanline, n;
+
+ (void) s;
+ /*
+ * Each scanline is assumed to start off as all
+ * white (we assume a PhotometricInterpretation
+ * of ``min-is-black'').
+ */
+ for (op = (unsigned char*) buf, cc = occ; cc-- > 0;)
+ *op++ = 0xff;
+
+ bp = (unsigned char *)tif->tif_rawcp;
+ cc = tif->tif_rawcc;
+ scanline = tif->tif_scanlinesize;
+ if (occ % scanline)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
+ return (0);
+ }
+ for (row = buf; occ > 0; occ -= scanline, row += scanline) {
+ n = *bp++, cc--;
+ switch (n) {
+ case LITERALROW:
+ /*
+ * The entire scanline is given as literal values.
+ */
+ if (cc < scanline)
+ goto bad;
+ _TIFFmemcpy(row, bp, scanline);
+ bp += scanline;
+ cc -= scanline;
+ break;
+ case LITERALSPAN: {
+ tmsize_t off;
+ /*
+ * The scanline has a literal span that begins at some
+ * offset.
+ */
+ off = (bp[0] * 256) + bp[1];
+ n = (bp[2] * 256) + bp[3];
+ if (cc < 4+n || off+n > scanline)
+ goto bad;
+ _TIFFmemcpy(row+off, bp+4, n);
+ bp += 4+n;
+ cc -= 4+n;
+ break;
+ }
+ default: {
+ uint32 npixels = 0, grey;
+ uint32 imagewidth = tif->tif_dir.td_imagewidth;
+
+ /*
+ * The scanline is composed of a sequence of constant
+ * color ``runs''. We shift into ``run mode'' and
+ * interpret bytes as codes of the form
+ * <color><npixels> until we've filled the scanline.
+ */
+ op = row;
+ for (;;) {
+ grey = (uint32)((n>>6) & 0x3);
+ n &= 0x3f;
+ /*
+ * Ensure the run does not exceed the scanline
+ * bounds, potentially resulting in a security
+ * issue.
+ */
+ while (n-- > 0 && npixels < imagewidth)
+ SETPIXEL(op, grey);
+ if (npixels >= imagewidth)
+ break;
+ if (cc == 0)
+ goto bad;
+ n = *bp++, cc--;
+ }
+ break;
+ }
+ }
+ }
+ tif->tif_rawcp = (uint8*) bp;
+ tif->tif_rawcc = cc;
+ return (1);
+bad:
+ TIFFErrorExt(tif->tif_clientdata, module, "Not enough data for scanline %ld",
+ (long) tif->tif_row);
+ return (0);
+}
+
+int
+TIFFInitNeXT(TIFF* tif, int scheme)
+{
+ (void) scheme;
+ tif->tif_decoderow = NeXTDecode;
+ tif->tif_decodestrip = NeXTDecode;
+ tif->tif_decodetile = NeXTDecode;
+ return (1);
+}
+#endif /* NEXT_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_ojpeg.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_ojpeg.c
new file mode 100644
index 0000000..bed4f9b
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_ojpeg.c
@@ -0,0 +1,2506 @@
+/* $Id: tif_ojpeg.c,v 1.56 2012-05-24 03:15:18 fwarmerdam Exp $ */
+
+/* WARNING: The type of JPEG encapsulation defined by the TIFF Version 6.0
+ specification is now totally obsolete and deprecated for new applications and
+ images. This file was was created solely in order to read unconverted images
+ still present on some users' computer systems. It will never be extended
+ to write such files. Writing new-style JPEG compressed TIFFs is implemented
+ in tif_jpeg.c.
+
+ The code is carefully crafted to robustly read all gathered JPEG-in-TIFF
+ testfiles, and anticipate as much as possible all other... But still, it may
+ fail on some. If you encounter problems, please report them on the TIFF
+ mailing list and/or to Joris Van Damme <info@awaresystems.be>.
+
+ Please read the file called "TIFF Technical Note #2" if you need to be
+ convinced this compression scheme is bad and breaks TIFF. That document
+ is linked to from the LibTiff site <http://www.remotesensing.org/libtiff/>
+ and from AWare Systems' TIFF section
+ <http://www.awaresystems.be/imaging/tiff.html>. It is also absorbed
+ in Adobe's specification supplements, marked "draft" up to this day, but
+ supported by the TIFF community.
+
+ This file interfaces with Release 6B of the JPEG Library written by the
+ Independent JPEG Group. Previous versions of this file required a hack inside
+ the LibJpeg library. This version no longer requires that. Remember to
+ remove the hack if you update from the old version.
+
+ Copyright (c) Joris Van Damme <info@awaresystems.be>
+ Copyright (c) AWare Systems <http://www.awaresystems.be/>
+
+ The licence agreement for this file is the same as the rest of the LibTiff
+ library.
+
+ IN NO EVENT SHALL JORIS VAN DAMME OR AWARE SYSTEMS BE LIABLE FOR
+ ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ OF THIS SOFTWARE.
+
+ Joris Van Damme and/or AWare Systems may be available for custom
+ developement. If you like what you see, and need anything similar or related,
+ contact <info@awaresystems.be>.
+*/
+
+/* What is what, and what is not?
+
+ This decoder starts with an input stream, that is essentially the JpegInterchangeFormat
+ stream, if any, followed by the strile data, if any. This stream is read in
+ OJPEGReadByte and related functions.
+
+ It analyzes the start of this stream, until it encounters non-marker data, i.e.
+ compressed image data. Some of the header markers it sees have no actual content,
+ like the SOI marker, and APP/COM markers that really shouldn't even be there. Some
+ other markers do have content, and the valuable bits and pieces of information
+ in these markers are saved, checking all to verify that the stream is more or
+ less within expected bounds. This happens inside the OJPEGReadHeaderInfoSecStreamXxx
+ functions.
+
+ Some OJPEG imagery contains no valid JPEG header markers. This situation is picked
+ up on if we've seen no SOF marker when we're at the start of the compressed image
+ data. In this case, the tables are read from JpegXxxTables tags, and the other
+ bits and pieces of information is initialized to its most basic value. This is
+ implemented in the OJPEGReadHeaderInfoSecTablesXxx functions.
+
+ When this is complete, a good and valid JPEG header can be assembled, and this is
+ passed through to LibJpeg. When that's done, the remainder of the input stream, i.e.
+ the compressed image data, can be passed through unchanged. This is done in
+ OJPEGWriteStream functions.
+
+ LibTiff rightly expects to know the subsampling values before decompression. Just like
+ in new-style JPEG-in-TIFF, though, or even more so, actually, the YCbCrsubsampling
+ tag is notoriously unreliable. To correct these tag values with the ones inside
+ the JPEG stream, the first part of the input stream is pre-scanned in
+ OJPEGSubsamplingCorrect, making no note of any other data, reporting no warnings
+ or errors, up to the point where either these values are read, or it's clear they
+ aren't there. This means that some of the data is read twice, but we feel speed
+ in correcting these values is important enough to warrant this sacrifice. Allthough
+ there is currently no define or other configuration mechanism to disable this behaviour,
+ the actual header scanning is build to robustly respond with error report if it
+ should encounter an uncorrected mismatch of subsampling values. See
+ OJPEGReadHeaderInfoSecStreamSof.
+
+ The restart interval and restart markers are the most tricky part... The restart
+ interval can be specified in a tag. It can also be set inside the input JPEG stream.
+ It can be used inside the input JPEG stream. If reading from strile data, we've
+ consistenly discovered the need to insert restart markers in between the different
+ striles, as is also probably the most likely interpretation of the original TIFF 6.0
+ specification. With all this setting of interval, and actual use of markers that is not
+ predictable at the time of valid JPEG header assembly, the restart thing may turn
+ out the Achilles heel of this implementation. Fortunately, most OJPEG writer vendors
+ succeed in reading back what they write, which may be the reason why we've been able
+ to discover ways that seem to work.
+
+ Some special provision is made for planarconfig separate OJPEG files. These seem
+ to consistently contain header info, a SOS marker, a plane, SOS marker, plane, SOS,
+ and plane. This may or may not be a valid JPEG configuration, we don't know and don't
+ care. We want LibTiff to be able to access the planes individually, without huge
+ buffering inside LibJpeg, anyway. So we compose headers to feed to LibJpeg, in this
+ case, that allow us to pass a single plane such that LibJpeg sees a valid
+ single-channel JPEG stream. Locating subsequent SOS markers, and thus subsequent
+ planes, is done inside OJPEGReadSecondarySos.
+
+ The benefit of the scheme is... that it works, basically. We know of no other that
+ does. It works without checking software tag, or otherwise going about things in an
+ OJPEG flavor specific manner. Instead, it is a single scheme, that covers the cases
+ with and without JpegInterchangeFormat, with and without striles, with part of
+ the header in JpegInterchangeFormat and remainder in first strile, etc. It is forgiving
+ and robust, may likely work with OJPEG flavors we've not seen yet, and makes most out
+ of the data.
+
+ Another nice side-effect is that a complete JPEG single valid stream is build if
+ planarconfig is not separate (vast majority). We may one day use that to build
+ converters to JPEG, and/or to new-style JPEG compression inside TIFF.
+
+ A dissadvantage is the lack of random access to the individual striles. This is the
+ reason for much of the complicated restart-and-position stuff inside OJPEGPreDecode.
+ Applications would do well accessing all striles in order, as this will result in
+ a single sequential scan of the input stream, and no restarting of LibJpeg decoding
+ session.
+*/
+
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+
+#define WIN32_LEAN_AND_MEAN
+#define VC_EXTRALEAN
+
+#include "tiffiop.h"
+#ifdef OJPEG_SUPPORT
+
+/* Configuration defines here are:
+ * JPEG_ENCAP_EXTERNAL: The normal way to call libjpeg, uses longjump. In some environments,
+ * like eg LibTiffDelphi, this is not possible. For this reason, the actual calls to
+ * libjpeg, with longjump stuff, are encapsulated in dedicated functions. When
+ * JPEG_ENCAP_EXTERNAL is defined, these encapsulating functions are declared external
+ * to this unit, and can be defined elsewhere to use stuff other then longjump.
+ * The default mode, without JPEG_ENCAP_EXTERNAL, implements the call encapsulators
+ * here, internally, with normal longjump.
+ * SETJMP, LONGJMP, JMP_BUF: On some machines/environments a longjump equivalent is
+ * conviniently available, but still it may be worthwhile to use _setjmp or sigsetjmp
+ * in place of plain setjmp. These macros will make it easier. It is useless
+ * to fiddle with these if you define JPEG_ENCAP_EXTERNAL.
+ * OJPEG_BUFFER: Define the size of the desired buffer here. Should be small enough so as to guarantee
+ * instant processing, optimal streaming and optimal use of processor cache, but also big
+ * enough so as to not result in significant call overhead. It should be at least a few
+ * bytes to accomodate some structures (this is verified in asserts), but it would not be
+ * sensible to make it this small anyway, and it should be at most 64K since it is indexed
+ * with uint16. We recommend 2K.
+ * EGYPTIANWALK: You could also define EGYPTIANWALK here, but it is not used anywhere and has
+ * absolutely no effect. That is why most people insist the EGYPTIANWALK is a bit silly.
+ */
+
+/* define LIBJPEG_ENCAP_EXTERNAL */
+#define SETJMP(jbuf) setjmp(jbuf)
+#define LONGJMP(jbuf,code) longjmp(jbuf,code)
+#define JMP_BUF jmp_buf
+#define OJPEG_BUFFER 2048
+/* define EGYPTIANWALK */
+
+#define JPEG_MARKER_SOF0 0xC0
+#define JPEG_MARKER_SOF1 0xC1
+#define JPEG_MARKER_SOF3 0xC3
+#define JPEG_MARKER_DHT 0xC4
+#define JPEG_MARKER_RST0 0XD0
+#define JPEG_MARKER_SOI 0xD8
+#define JPEG_MARKER_EOI 0xD9
+#define JPEG_MARKER_SOS 0xDA
+#define JPEG_MARKER_DQT 0xDB
+#define JPEG_MARKER_DRI 0xDD
+#define JPEG_MARKER_APP0 0xE0
+#define JPEG_MARKER_COM 0xFE
+
+#define FIELD_OJPEG_JPEGINTERCHANGEFORMAT (FIELD_CODEC+0)
+#define FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH (FIELD_CODEC+1)
+#define FIELD_OJPEG_JPEGQTABLES (FIELD_CODEC+2)
+#define FIELD_OJPEG_JPEGDCTABLES (FIELD_CODEC+3)
+#define FIELD_OJPEG_JPEGACTABLES (FIELD_CODEC+4)
+#define FIELD_OJPEG_JPEGPROC (FIELD_CODEC+5)
+#define FIELD_OJPEG_JPEGRESTARTINTERVAL (FIELD_CODEC+6)
+
+static const TIFFField ojpegFields[] = {
+ {TIFFTAG_JPEGIFOFFSET,1,1,TIFF_LONG8,0,TIFF_SETGET_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGINTERCHANGEFORMAT,TRUE,FALSE,"JpegInterchangeFormat",NULL},
+ {TIFFTAG_JPEGIFBYTECOUNT,1,1,TIFF_LONG8,0,TIFF_SETGET_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH,TRUE,FALSE,"JpegInterchangeFormatLength",NULL},
+ {TIFFTAG_JPEGQTABLES,TIFF_VARIABLE2,TIFF_VARIABLE2,TIFF_LONG8,0,TIFF_SETGET_C32_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGQTABLES,FALSE,TRUE,"JpegQTables",NULL},
+ {TIFFTAG_JPEGDCTABLES,TIFF_VARIABLE2,TIFF_VARIABLE2,TIFF_LONG8,0,TIFF_SETGET_C32_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGDCTABLES,FALSE,TRUE,"JpegDcTables",NULL},
+ {TIFFTAG_JPEGACTABLES,TIFF_VARIABLE2,TIFF_VARIABLE2,TIFF_LONG8,0,TIFF_SETGET_C32_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGACTABLES,FALSE,TRUE,"JpegAcTables",NULL},
+ {TIFFTAG_JPEGPROC,1,1,TIFF_SHORT,0,TIFF_SETGET_UINT16,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGPROC,FALSE,FALSE,"JpegProc",NULL},
+ {TIFFTAG_JPEGRESTARTINTERVAL,1,1,TIFF_SHORT,0,TIFF_SETGET_UINT16,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGRESTARTINTERVAL,FALSE,FALSE,"JpegRestartInterval",NULL},
+};
+
+#ifndef LIBJPEG_ENCAP_EXTERNAL
+#include <setjmp.h>
+#endif
+
+/* We undefine FAR to avoid conflict with JPEG definition */
+
+#ifdef FAR
+#undef FAR
+#endif
+
+/*
+ Libjpeg's jmorecfg.h defines INT16 and INT32, but only if XMD_H is
+ not defined. Unfortunately, the MinGW and Borland compilers include
+ a typedef for INT32, which causes a conflict. MSVC does not include
+ a conficting typedef given the headers which are included.
+*/
+#if defined(__BORLANDC__) || defined(__MINGW32__)
+# define XMD_H 1
+#endif
+
+/* Define "boolean" as unsigned char, not int, per Windows custom. */
+#if defined(__WIN32__) && !defined(__MINGW32__)
+# ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
+ typedef unsigned char boolean;
+# endif
+# define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */
+#endif
+
+#ifndef _FX_JPEG_TURBO_
+ #include "../../libjpeg/jpeglib.h"
+ #include "../../libjpeg/jerror.h"
+#else
+ #include "../../libjpeg-turbo/jpeglib.h"
+ #include "../../libjpeg-turbo/jerror.h"
+#endif//_FX_JPEG_TURBO_
+
+typedef struct jpeg_error_mgr jpeg_error_mgr;
+typedef struct jpeg_common_struct jpeg_common_struct;
+typedef struct jpeg_decompress_struct jpeg_decompress_struct;
+typedef struct jpeg_source_mgr jpeg_source_mgr;
+
+typedef enum {
+ osibsNotSetYet,
+ osibsJpegInterchangeFormat,
+ osibsStrile,
+ osibsEof
+} OJPEGStateInBufferSource;
+
+typedef enum {
+ ososSoi,
+ ososQTable0,ososQTable1,ososQTable2,ososQTable3,
+ ososDcTable0,ososDcTable1,ososDcTable2,ososDcTable3,
+ ososAcTable0,ososAcTable1,ososAcTable2,ososAcTable3,
+ ososDri,
+ ososSof,
+ ososSos,
+ ososCompressed,
+ ososRst,
+ ososEoi
+} OJPEGStateOutState;
+
+typedef struct {
+ TIFF* tif;
+ #ifndef LIBJPEG_ENCAP_EXTERNAL
+ JMP_BUF exit_jmpbuf;
+ #endif
+ TIFFVGetMethod vgetparent;
+ TIFFVSetMethod vsetparent;
+ TIFFPrintMethod printdir;
+ uint64 file_size;
+ uint32 image_width;
+ uint32 image_length;
+ uint32 strile_width;
+ uint32 strile_length;
+ uint32 strile_length_total;
+ uint8 samples_per_pixel;
+ uint8 plane_sample_offset;
+ uint8 samples_per_pixel_per_plane;
+ uint64 jpeg_interchange_format;
+ uint64 jpeg_interchange_format_length;
+ uint8 jpeg_proc;
+ uint8 subsamplingcorrect;
+ uint8 subsamplingcorrect_done;
+ uint8 subsampling_tag;
+ uint8 subsampling_hor;
+ uint8 subsampling_ver;
+ uint8 subsampling_force_desubsampling_inside_decompression;
+ uint8 qtable_offset_count;
+ uint8 dctable_offset_count;
+ uint8 actable_offset_count;
+ uint64 qtable_offset[3];
+ uint64 dctable_offset[3];
+ uint64 actable_offset[3];
+ uint8* qtable[4];
+ uint8* dctable[4];
+ uint8* actable[4];
+ uint16 restart_interval;
+ uint8 restart_index;
+ uint8 sof_log;
+ uint8 sof_marker_id;
+ uint32 sof_x;
+ uint32 sof_y;
+ uint8 sof_c[3];
+ uint8 sof_hv[3];
+ uint8 sof_tq[3];
+ uint8 sos_cs[3];
+ uint8 sos_tda[3];
+ struct {
+ uint8 log;
+ OJPEGStateInBufferSource in_buffer_source;
+ uint32 in_buffer_next_strile;
+ uint64 in_buffer_file_pos;
+ uint64 in_buffer_file_togo;
+ } sos_end[3];
+ uint8 readheader_done;
+ uint8 writeheader_done;
+ uint16 write_cursample;
+ uint32 write_curstrile;
+ uint8 libjpeg_session_active;
+ uint8 libjpeg_jpeg_query_style;
+ jpeg_error_mgr libjpeg_jpeg_error_mgr;
+ jpeg_decompress_struct libjpeg_jpeg_decompress_struct;
+ jpeg_source_mgr libjpeg_jpeg_source_mgr;
+ uint8 subsampling_convert_log;
+ uint32 subsampling_convert_ylinelen;
+ uint32 subsampling_convert_ylines;
+ uint32 subsampling_convert_clinelen;
+ uint32 subsampling_convert_clines;
+ uint32 subsampling_convert_ybuflen;
+ uint32 subsampling_convert_cbuflen;
+ uint32 subsampling_convert_ycbcrbuflen;
+ uint8* subsampling_convert_ycbcrbuf;
+ uint8* subsampling_convert_ybuf;
+ uint8* subsampling_convert_cbbuf;
+ uint8* subsampling_convert_crbuf;
+ uint32 subsampling_convert_ycbcrimagelen;
+ uint8** subsampling_convert_ycbcrimage;
+ uint32 subsampling_convert_clinelenout;
+ uint32 subsampling_convert_state;
+ uint32 bytes_per_line; /* if the codec outputs subsampled data, a 'line' in bytes_per_line */
+ uint32 lines_per_strile; /* and lines_per_strile means subsampling_ver desubsampled rows */
+ OJPEGStateInBufferSource in_buffer_source;
+ uint32 in_buffer_next_strile;
+ uint32 in_buffer_strile_count;
+ uint64 in_buffer_file_pos;
+ uint8 in_buffer_file_pos_log;
+ uint64 in_buffer_file_togo;
+ uint16 in_buffer_togo;
+ uint8* in_buffer_cur;
+ uint8 in_buffer[OJPEG_BUFFER];
+ OJPEGStateOutState out_state;
+ uint8 out_buffer[OJPEG_BUFFER];
+ uint8* skip_buffer;
+} OJPEGState;
+
+static int OJPEGVGetField(TIFF* tif, uint32 tag, va_list ap);
+static int OJPEGVSetField(TIFF* tif, uint32 tag, va_list ap);
+static void OJPEGPrintDir(TIFF* tif, FILE* fd, long flags);
+
+static int OJPEGFixupTags(TIFF* tif);
+static int OJPEGSetupDecode(TIFF* tif);
+static int OJPEGPreDecode(TIFF* tif, uint16 s);
+static int OJPEGPreDecodeSkipRaw(TIFF* tif);
+static int OJPEGPreDecodeSkipScanlines(TIFF* tif);
+static int OJPEGDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s);
+static int OJPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc);
+static int OJPEGDecodeScanlines(TIFF* tif, uint8* buf, tmsize_t cc);
+static void OJPEGPostDecode(TIFF* tif, uint8* buf, tmsize_t cc);
+static int OJPEGSetupEncode(TIFF* tif);
+static int OJPEGPreEncode(TIFF* tif, uint16 s);
+static int OJPEGEncode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s);
+static int OJPEGPostEncode(TIFF* tif);
+static void OJPEGCleanup(TIFF* tif);
+
+static void OJPEGSubsamplingCorrect(TIFF* tif);
+static int OJPEGReadHeaderInfo(TIFF* tif);
+static int OJPEGReadSecondarySos(TIFF* tif, uint16 s);
+static int OJPEGWriteHeaderInfo(TIFF* tif);
+static void OJPEGLibjpegSessionAbort(TIFF* tif);
+
+static int OJPEGReadHeaderInfoSec(TIFF* tif);
+static int OJPEGReadHeaderInfoSecStreamDri(TIFF* tif);
+static int OJPEGReadHeaderInfoSecStreamDqt(TIFF* tif);
+static int OJPEGReadHeaderInfoSecStreamDht(TIFF* tif);
+static int OJPEGReadHeaderInfoSecStreamSof(TIFF* tif, uint8 marker_id);
+static int OJPEGReadHeaderInfoSecStreamSos(TIFF* tif);
+static int OJPEGReadHeaderInfoSecTablesQTable(TIFF* tif);
+static int OJPEGReadHeaderInfoSecTablesDcTable(TIFF* tif);
+static int OJPEGReadHeaderInfoSecTablesAcTable(TIFF* tif);
+
+static int OJPEGReadBufferFill(OJPEGState* sp);
+static int OJPEGReadByte(OJPEGState* sp, uint8* byte);
+static int OJPEGReadBytePeek(OJPEGState* sp, uint8* byte);
+static void OJPEGReadByteAdvance(OJPEGState* sp);
+static int OJPEGReadWord(OJPEGState* sp, uint16* word);
+static int OJPEGReadBlock(OJPEGState* sp, uint16 len, void* mem);
+static void OJPEGReadSkip(OJPEGState* sp, uint16 len);
+
+static int OJPEGWriteStream(TIFF* tif, void** mem, uint32* len);
+static void OJPEGWriteStreamSoi(TIFF* tif, void** mem, uint32* len);
+static void OJPEGWriteStreamQTable(TIFF* tif, uint8 table_index, void** mem, uint32* len);
+static void OJPEGWriteStreamDcTable(TIFF* tif, uint8 table_index, void** mem, uint32* len);
+static void OJPEGWriteStreamAcTable(TIFF* tif, uint8 table_index, void** mem, uint32* len);
+static void OJPEGWriteStreamDri(TIFF* tif, void** mem, uint32* len);
+static void OJPEGWriteStreamSof(TIFF* tif, void** mem, uint32* len);
+static void OJPEGWriteStreamSos(TIFF* tif, void** mem, uint32* len);
+static int OJPEGWriteStreamCompressed(TIFF* tif, void** mem, uint32* len);
+static void OJPEGWriteStreamRst(TIFF* tif, void** mem, uint32* len);
+static void OJPEGWriteStreamEoi(TIFF* tif, void** mem, uint32* len);
+
+#ifdef LIBJPEG_ENCAP_EXTERNAL
+extern int jpeg_create_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo);
+extern int jpeg_read_header_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, uint8 require_image);
+extern int jpeg_start_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo);
+extern int jpeg_read_scanlines_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* scanlines, uint32 max_lines);
+extern int jpeg_read_raw_data_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* data, uint32 max_lines);
+extern void jpeg_encap_unwind(TIFF* tif);
+#else
+static int jpeg_create_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* j);
+static int jpeg_read_header_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, uint8 require_image);
+static int jpeg_start_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo);
+static int jpeg_read_scanlines_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* scanlines, uint32 max_lines);
+static int jpeg_read_raw_data_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* data, uint32 max_lines);
+static void jpeg_encap_unwind(TIFF* tif);
+#endif
+
+static void OJPEGLibjpegJpegErrorMgrOutputMessage(jpeg_common_struct* cinfo);
+static void OJPEGLibjpegJpegErrorMgrErrorExit(jpeg_common_struct* cinfo);
+static void OJPEGLibjpegJpegSourceMgrInitSource(jpeg_decompress_struct* cinfo);
+static boolean OJPEGLibjpegJpegSourceMgrFillInputBuffer(jpeg_decompress_struct* cinfo);
+static void OJPEGLibjpegJpegSourceMgrSkipInputData(jpeg_decompress_struct* cinfo, long num_bytes);
+static boolean OJPEGLibjpegJpegSourceMgrResyncToRestart(jpeg_decompress_struct* cinfo, int desired);
+static void OJPEGLibjpegJpegSourceMgrTermSource(jpeg_decompress_struct* cinfo);
+
+int
+TIFFInitOJPEG(TIFF* tif, int scheme)
+{
+ static const char module[]="TIFFInitOJPEG";
+ OJPEGState* sp;
+
+ assert(scheme==COMPRESSION_OJPEG);
+
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, ojpegFields, TIFFArrayCount(ojpegFields))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Merging Old JPEG codec-specific tags failed");
+ return 0;
+ }
+
+ /* state block */
+ sp = (OJPEGState*)_TIFFmalloc(sizeof(OJPEGState)); // // add (OJPEGState*) cast
+ if (sp == NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"No space for OJPEG state block");
+ return(0);
+ }
+ _TIFFmemset(sp,0,sizeof(OJPEGState));
+ sp->tif=tif;
+ sp->jpeg_proc=1;
+ sp->subsampling_hor=2;
+ sp->subsampling_ver=2;
+ TIFFSetField(tif,TIFFTAG_YCBCRSUBSAMPLING,2,2);
+ /* tif codec methods */
+ tif->tif_fixuptags=OJPEGFixupTags;
+ tif->tif_setupdecode=OJPEGSetupDecode;
+ tif->tif_predecode=OJPEGPreDecode;
+ tif->tif_postdecode=OJPEGPostDecode;
+ tif->tif_decoderow=OJPEGDecode;
+ tif->tif_decodestrip=OJPEGDecode;
+ tif->tif_decodetile=OJPEGDecode;
+ tif->tif_setupencode=OJPEGSetupEncode;
+ tif->tif_preencode=OJPEGPreEncode;
+ tif->tif_postencode=OJPEGPostEncode;
+ tif->tif_encoderow=OJPEGEncode;
+ tif->tif_encodestrip=OJPEGEncode;
+ tif->tif_encodetile=OJPEGEncode;
+ tif->tif_cleanup=OJPEGCleanup;
+ tif->tif_data=(uint8*)sp;
+ /* tif tag methods */
+ sp->vgetparent=tif->tif_tagmethods.vgetfield;
+ tif->tif_tagmethods.vgetfield=OJPEGVGetField;
+ sp->vsetparent=tif->tif_tagmethods.vsetfield;
+ tif->tif_tagmethods.vsetfield=OJPEGVSetField;
+ sp->printdir=tif->tif_tagmethods.printdir;
+ tif->tif_tagmethods.printdir=OJPEGPrintDir;
+ /* Some OJPEG files don't have strip or tile offsets or bytecounts tags.
+ Some others do, but have totally meaningless or corrupt values
+ in these tags. In these cases, the JpegInterchangeFormat stream is
+ reliable. In any case, this decoder reads the compressed data itself,
+ from the most reliable locations, and we need to notify encapsulating
+ LibTiff not to read raw strips or tiles for us. */
+ tif->tif_flags|=TIFF_NOREADRAW;
+ return(1);
+}
+
+static int
+OJPEGVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ switch(tag)
+ {
+ case TIFFTAG_JPEGIFOFFSET:
+ *va_arg(ap,uint64*)=(uint64)sp->jpeg_interchange_format;
+ break;
+ case TIFFTAG_JPEGIFBYTECOUNT:
+ *va_arg(ap,uint64*)=(uint64)sp->jpeg_interchange_format_length;
+ break;
+ case TIFFTAG_YCBCRSUBSAMPLING:
+ if (sp->subsamplingcorrect_done==0)
+ OJPEGSubsamplingCorrect(tif);
+ *va_arg(ap,uint16*)=(uint16)sp->subsampling_hor;
+ *va_arg(ap,uint16*)=(uint16)sp->subsampling_ver;
+ break;
+ case TIFFTAG_JPEGQTABLES:
+ *va_arg(ap,uint32*)=(uint32)sp->qtable_offset_count;
+ *va_arg(ap,void**)=(void*)sp->qtable_offset;
+ break;
+ case TIFFTAG_JPEGDCTABLES:
+ *va_arg(ap,uint32*)=(uint32)sp->dctable_offset_count;
+ *va_arg(ap,void**)=(void*)sp->dctable_offset;
+ break;
+ case TIFFTAG_JPEGACTABLES:
+ *va_arg(ap,uint32*)=(uint32)sp->actable_offset_count;
+ *va_arg(ap,void**)=(void*)sp->actable_offset;
+ break;
+ case TIFFTAG_JPEGPROC:
+ *va_arg(ap,uint16*)=(uint16)sp->jpeg_proc;
+ break;
+ case TIFFTAG_JPEGRESTARTINTERVAL:
+ *va_arg(ap,uint16*)=sp->restart_interval;
+ break;
+ default:
+ return (*sp->vgetparent)(tif,tag,ap);
+ }
+ return (1);
+}
+
+static int
+OJPEGVSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ static const char module[]="OJPEGVSetField";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint32 ma;
+ uint64* mb;
+ uint32 n;
+ switch(tag)
+ {
+ case TIFFTAG_JPEGIFOFFSET:
+ sp->jpeg_interchange_format=(uint64)va_arg(ap,uint64);
+ break;
+ case TIFFTAG_JPEGIFBYTECOUNT:
+ sp->jpeg_interchange_format_length=(uint64)va_arg(ap,uint64);
+ break;
+ case TIFFTAG_YCBCRSUBSAMPLING:
+ sp->subsampling_tag=1;
+ sp->subsampling_hor=(uint8)va_arg(ap,uint16_vap);
+ sp->subsampling_ver=(uint8)va_arg(ap,uint16_vap);
+ tif->tif_dir.td_ycbcrsubsampling[0]=sp->subsampling_hor;
+ tif->tif_dir.td_ycbcrsubsampling[1]=sp->subsampling_ver;
+ break;
+ case TIFFTAG_JPEGQTABLES:
+ ma=(uint32)va_arg(ap,uint32);
+ if (ma!=0)
+ {
+ if (ma>3)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JpegQTables tag has incorrect count");
+ return(0);
+ }
+ sp->qtable_offset_count=(uint8)ma;
+ mb=(uint64*)va_arg(ap,uint64*);
+ for (n=0; n<ma; n++)
+ sp->qtable_offset[n]=mb[n];
+ }
+ break;
+ case TIFFTAG_JPEGDCTABLES:
+ ma=(uint32)va_arg(ap,uint32);
+ if (ma!=0)
+ {
+ if (ma>3)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JpegDcTables tag has incorrect count");
+ return(0);
+ }
+ sp->dctable_offset_count=(uint8)ma;
+ mb=(uint64*)va_arg(ap,uint64*);
+ for (n=0; n<ma; n++)
+ sp->dctable_offset[n]=mb[n];
+ }
+ break;
+ case TIFFTAG_JPEGACTABLES:
+ ma=(uint32)va_arg(ap,uint32);
+ if (ma!=0)
+ {
+ if (ma>3)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JpegAcTables tag has incorrect count");
+ return(0);
+ }
+ sp->actable_offset_count=(uint8)ma;
+ mb=(uint64*)va_arg(ap,uint64*);
+ for (n=0; n<ma; n++)
+ sp->actable_offset[n]=mb[n];
+ }
+ break;
+ case TIFFTAG_JPEGPROC:
+ sp->jpeg_proc=(uint8)va_arg(ap,uint16_vap);
+ break;
+ case TIFFTAG_JPEGRESTARTINTERVAL:
+ sp->restart_interval=(uint16)va_arg(ap,uint16_vap);
+ break;
+ default:
+ return (*sp->vsetparent)(tif,tag,ap);
+ }
+ TIFFSetFieldBit(tif,TIFFFieldWithTag(tif,tag)->field_bit);
+ tif->tif_flags|=TIFF_DIRTYDIRECT;
+ return(1);
+}
+
+static void
+OJPEGPrintDir(TIFF* tif, FILE* fd, long flags)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 m;
+ (void)flags;
+ assert(sp!=NULL);
+ if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGINTERCHANGEFORMAT))
+ fprintf(fd," JpegInterchangeFormat: " TIFF_UINT64_FORMAT "\n",(TIFF_UINT64_T)sp->jpeg_interchange_format);
+ if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH))
+ fprintf(fd," JpegInterchangeFormatLength: " TIFF_UINT64_FORMAT "\n",(TIFF_UINT64_T)sp->jpeg_interchange_format_length);
+ if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGQTABLES))
+ {
+ fprintf(fd," JpegQTables:");
+ for (m=0; m<sp->qtable_offset_count; m++)
+ fprintf(fd," " TIFF_UINT64_FORMAT,(TIFF_UINT64_T)sp->qtable_offset[m]);
+ fprintf(fd,"\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGDCTABLES))
+ {
+ fprintf(fd," JpegDcTables:");
+ for (m=0; m<sp->dctable_offset_count; m++)
+ fprintf(fd," " TIFF_UINT64_FORMAT,(TIFF_UINT64_T)sp->dctable_offset[m]);
+ fprintf(fd,"\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGACTABLES))
+ {
+ fprintf(fd," JpegAcTables:");
+ for (m=0; m<sp->actable_offset_count; m++)
+ fprintf(fd," " TIFF_UINT64_FORMAT,(TIFF_UINT64_T)sp->actable_offset[m]);
+ fprintf(fd,"\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGPROC))
+ fprintf(fd," JpegProc: %u\n",(unsigned int)sp->jpeg_proc);
+ if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGRESTARTINTERVAL))
+ fprintf(fd," JpegRestartInterval: %u\n",(unsigned int)sp->restart_interval);
+ if (sp->printdir)
+ (*sp->printdir)(tif, fd, flags);
+}
+
+static int
+OJPEGFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return(1);
+}
+
+static int
+OJPEGSetupDecode(TIFF* tif)
+{
+ static const char module[]="OJPEGSetupDecode";
+ TIFFWarningExt(tif->tif_clientdata,module,"Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software");
+ return(1);
+}
+
+static int
+OJPEGPreDecode(TIFF* tif, uint16 s)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint32 m;
+ if (sp->subsamplingcorrect_done==0)
+ OJPEGSubsamplingCorrect(tif);
+ if (sp->readheader_done==0)
+ {
+ if (OJPEGReadHeaderInfo(tif)==0)
+ return(0);
+ }
+ if (sp->sos_end[s].log==0)
+ {
+ if (OJPEGReadSecondarySos(tif,s)==0)
+ return(0);
+ }
+ if isTiled(tif)
+ m=tif->tif_curtile;
+ else
+ m=tif->tif_curstrip;
+ if ((sp->writeheader_done!=0) && ((sp->write_cursample!=s) || (sp->write_curstrile>m)))
+ {
+ if (sp->libjpeg_session_active!=0)
+ OJPEGLibjpegSessionAbort(tif);
+ sp->writeheader_done=0;
+ }
+ if (sp->writeheader_done==0)
+ {
+ sp->plane_sample_offset=(uint8)s;
+ sp->write_cursample=s;
+ sp->write_curstrile=s*tif->tif_dir.td_stripsperimage;
+ if ((sp->in_buffer_file_pos_log==0) ||
+ (sp->in_buffer_file_pos-sp->in_buffer_togo!=sp->sos_end[s].in_buffer_file_pos))
+ {
+ sp->in_buffer_source=sp->sos_end[s].in_buffer_source;
+ sp->in_buffer_next_strile=sp->sos_end[s].in_buffer_next_strile;
+ sp->in_buffer_file_pos=sp->sos_end[s].in_buffer_file_pos;
+ sp->in_buffer_file_pos_log=0;
+ sp->in_buffer_file_togo=sp->sos_end[s].in_buffer_file_togo;
+ sp->in_buffer_togo=0;
+ sp->in_buffer_cur=0;
+ }
+ if (OJPEGWriteHeaderInfo(tif)==0)
+ return(0);
+ }
+ while (sp->write_curstrile<m)
+ {
+ if (sp->libjpeg_jpeg_query_style==0)
+ {
+ if (OJPEGPreDecodeSkipRaw(tif)==0)
+ return(0);
+ }
+ else
+ {
+ if (OJPEGPreDecodeSkipScanlines(tif)==0)
+ return(0);
+ }
+ sp->write_curstrile++;
+ }
+ return(1);
+}
+
+static int
+OJPEGPreDecodeSkipRaw(TIFF* tif)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint32 m;
+ m=sp->lines_per_strile;
+ if (sp->subsampling_convert_state!=0)
+ {
+ if (sp->subsampling_convert_clines-sp->subsampling_convert_state>=m)
+ {
+ sp->subsampling_convert_state+=m;
+ if (sp->subsampling_convert_state==sp->subsampling_convert_clines)
+ sp->subsampling_convert_state=0;
+ return(1);
+ }
+ m-=sp->subsampling_convert_clines-sp->subsampling_convert_state;
+ sp->subsampling_convert_state=0;
+ }
+ while (m>=sp->subsampling_convert_clines)
+ {
+ if (jpeg_read_raw_data_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),sp->subsampling_convert_ycbcrimage,sp->subsampling_ver*8)==0)
+ return(0);
+ m-=sp->subsampling_convert_clines;
+ }
+ if (m>0)
+ {
+ if (jpeg_read_raw_data_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),sp->subsampling_convert_ycbcrimage,sp->subsampling_ver*8)==0)
+ return(0);
+ sp->subsampling_convert_state=m;
+ }
+ return(1);
+}
+
+static int
+OJPEGPreDecodeSkipScanlines(TIFF* tif)
+{
+ static const char module[]="OJPEGPreDecodeSkipScanlines";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint32 m;
+ if (sp->skip_buffer==NULL)
+ {
+ // add (uint8*) cast
+ sp->skip_buffer = (uint8*)_TIFFmalloc(sp->bytes_per_line);
+ if (sp->skip_buffer == NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ }
+ for (m=0; m<sp->lines_per_strile; m++)
+ {
+ if (jpeg_read_scanlines_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),&sp->skip_buffer,1)==0)
+ return(0);
+ }
+ return(1);
+}
+
+static int
+OJPEGDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ (void)s;
+ if (sp->libjpeg_jpeg_query_style==0)
+ {
+ if (OJPEGDecodeRaw(tif,buf,cc)==0)
+ return(0);
+ }
+ else
+ {
+ if (OJPEGDecodeScanlines(tif,buf,cc)==0)
+ return(0);
+ }
+ return(1);
+}
+
+static int
+OJPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc)
+{
+ static const char module[]="OJPEGDecodeRaw";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8* m;
+ tmsize_t n;
+ uint8* oy;
+ uint8* ocb;
+ uint8* ocr;
+ uint8* p;
+ uint32 q;
+ uint8* r;
+ uint8 sx,sy;
+ if (cc%sp->bytes_per_line!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Fractional scanline not read");
+ return(0);
+ }
+ assert(cc>0);
+ m=buf;
+ n=cc;
+ do
+ {
+ if (sp->subsampling_convert_state==0)
+ {
+ if (jpeg_read_raw_data_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),sp->subsampling_convert_ycbcrimage,sp->subsampling_ver*8)==0)
+ return(0);
+ }
+ oy=sp->subsampling_convert_ybuf+sp->subsampling_convert_state*sp->subsampling_ver*sp->subsampling_convert_ylinelen;
+ ocb=sp->subsampling_convert_cbbuf+sp->subsampling_convert_state*sp->subsampling_convert_clinelen;
+ ocr=sp->subsampling_convert_crbuf+sp->subsampling_convert_state*sp->subsampling_convert_clinelen;
+ p=m;
+ for (q=0; q<sp->subsampling_convert_clinelenout; q++)
+ {
+ r=oy;
+ for (sy=0; sy<sp->subsampling_ver; sy++)
+ {
+ for (sx=0; sx<sp->subsampling_hor; sx++)
+ *p++=*r++;
+ r+=sp->subsampling_convert_ylinelen-sp->subsampling_hor;
+ }
+ oy+=sp->subsampling_hor;
+ *p++=*ocb++;
+ *p++=*ocr++;
+ }
+ sp->subsampling_convert_state++;
+ if (sp->subsampling_convert_state==sp->subsampling_convert_clines)
+ sp->subsampling_convert_state=0;
+ m+=sp->bytes_per_line;
+ n-=sp->bytes_per_line;
+ } while(n>0);
+ return(1);
+}
+
+static int
+OJPEGDecodeScanlines(TIFF* tif, uint8* buf, tmsize_t cc)
+{
+ static const char module[]="OJPEGDecodeScanlines";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8* m;
+ tmsize_t n;
+ if (cc%sp->bytes_per_line!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Fractional scanline not read");
+ return(0);
+ }
+ assert(cc>0);
+ m=buf;
+ n=cc;
+ do
+ {
+ if (jpeg_read_scanlines_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),&m,1)==0)
+ return(0);
+ m+=sp->bytes_per_line;
+ n-=sp->bytes_per_line;
+ } while(n>0);
+ return(1);
+}
+
+static void
+OJPEGPostDecode(TIFF* tif, uint8* buf, tmsize_t cc)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ (void)buf;
+ (void)cc;
+ sp->write_curstrile++;
+ if (sp->write_curstrile%tif->tif_dir.td_stripsperimage==0)
+ {
+ assert(sp->libjpeg_session_active!=0);
+ OJPEGLibjpegSessionAbort(tif);
+ sp->writeheader_done=0;
+ }
+}
+
+static int
+OJPEGSetupEncode(TIFF* tif)
+{
+ static const char module[]="OJPEGSetupEncode";
+ TIFFErrorExt(tif->tif_clientdata,module,"OJPEG encoding not supported; use new-style JPEG compression instead");
+ return(0);
+}
+
+static int
+OJPEGPreEncode(TIFF* tif, uint16 s)
+{
+ static const char module[]="OJPEGPreEncode";
+ (void)s;
+ TIFFErrorExt(tif->tif_clientdata,module,"OJPEG encoding not supported; use new-style JPEG compression instead");
+ return(0);
+}
+
+static int
+OJPEGEncode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+{
+ static const char module[]="OJPEGEncode";
+ (void)buf;
+ (void)cc;
+ (void)s;
+ TIFFErrorExt(tif->tif_clientdata,module,"OJPEG encoding not supported; use new-style JPEG compression instead");
+ return(0);
+}
+
+static int
+OJPEGPostEncode(TIFF* tif)
+{
+ static const char module[]="OJPEGPostEncode";
+ TIFFErrorExt(tif->tif_clientdata,module,"OJPEG encoding not supported; use new-style JPEG compression instead");
+ return(0);
+}
+
+static void
+OJPEGCleanup(TIFF* tif)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ if (sp!=0)
+ {
+ tif->tif_tagmethods.vgetfield=sp->vgetparent;
+ tif->tif_tagmethods.vsetfield=sp->vsetparent;
+ tif->tif_tagmethods.printdir=sp->printdir;
+ if (sp->qtable[0]!=0)
+ _TIFFfree(sp->qtable[0]);
+ if (sp->qtable[1]!=0)
+ _TIFFfree(sp->qtable[1]);
+ if (sp->qtable[2]!=0)
+ _TIFFfree(sp->qtable[2]);
+ if (sp->qtable[3]!=0)
+ _TIFFfree(sp->qtable[3]);
+ if (sp->dctable[0]!=0)
+ _TIFFfree(sp->dctable[0]);
+ if (sp->dctable[1]!=0)
+ _TIFFfree(sp->dctable[1]);
+ if (sp->dctable[2]!=0)
+ _TIFFfree(sp->dctable[2]);
+ if (sp->dctable[3]!=0)
+ _TIFFfree(sp->dctable[3]);
+ if (sp->actable[0]!=0)
+ _TIFFfree(sp->actable[0]);
+ if (sp->actable[1]!=0)
+ _TIFFfree(sp->actable[1]);
+ if (sp->actable[2]!=0)
+ _TIFFfree(sp->actable[2]);
+ if (sp->actable[3]!=0)
+ _TIFFfree(sp->actable[3]);
+ if (sp->libjpeg_session_active!=0)
+ OJPEGLibjpegSessionAbort(tif);
+ if (sp->subsampling_convert_ycbcrbuf!=0)
+ _TIFFfree(sp->subsampling_convert_ycbcrbuf);
+ if (sp->subsampling_convert_ycbcrimage!=0)
+ _TIFFfree(sp->subsampling_convert_ycbcrimage);
+ if (sp->skip_buffer!=0)
+ _TIFFfree(sp->skip_buffer);
+ _TIFFfree(sp);
+ tif->tif_data=NULL;
+ _TIFFSetDefaultCompressionState(tif);
+ }
+}
+
+static void
+OJPEGSubsamplingCorrect(TIFF* tif)
+{
+ static const char module[]="OJPEGSubsamplingCorrect";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 mh;
+ uint8 mv;
+ _TIFFFillStriles( tif );
+
+ assert(sp->subsamplingcorrect_done==0);
+ if ((tif->tif_dir.td_samplesperpixel!=3) || ((tif->tif_dir.td_photometric!=PHOTOMETRIC_YCBCR) &&
+ (tif->tif_dir.td_photometric!=PHOTOMETRIC_ITULAB)))
+ {
+ if (sp->subsampling_tag!=0)
+ TIFFWarningExt(tif->tif_clientdata,module,"Subsampling tag not appropriate for this Photometric and/or SamplesPerPixel");
+ sp->subsampling_hor=1;
+ sp->subsampling_ver=1;
+ sp->subsampling_force_desubsampling_inside_decompression=0;
+ }
+ else
+ {
+ sp->subsamplingcorrect_done=1;
+ mh=sp->subsampling_hor;
+ mv=sp->subsampling_ver;
+ sp->subsamplingcorrect=1;
+ OJPEGReadHeaderInfoSec(tif);
+ if (sp->subsampling_force_desubsampling_inside_decompression!=0)
+ {
+ sp->subsampling_hor=1;
+ sp->subsampling_ver=1;
+ }
+ sp->subsamplingcorrect=0;
+ if (((sp->subsampling_hor!=mh) || (sp->subsampling_ver!=mv)) && (sp->subsampling_force_desubsampling_inside_decompression==0))
+ {
+ if (sp->subsampling_tag==0)
+ TIFFWarningExt(tif->tif_clientdata,module,"Subsampling tag is not set, yet subsampling inside JPEG data [%d,%d] does not match default values [2,2]; assuming subsampling inside JPEG data is correct",sp->subsampling_hor,sp->subsampling_ver);
+ else
+ TIFFWarningExt(tif->tif_clientdata,module,"Subsampling inside JPEG data [%d,%d] does not match subsampling tag values [%d,%d]; assuming subsampling inside JPEG data is correct",sp->subsampling_hor,sp->subsampling_ver,mh,mv);
+ }
+ if (sp->subsampling_force_desubsampling_inside_decompression!=0)
+ {
+ if (sp->subsampling_tag==0)
+ TIFFWarningExt(tif->tif_clientdata,module,"Subsampling tag is not set, yet subsampling inside JPEG data does not match default values [2,2] (nor any other values allowed in TIFF); assuming subsampling inside JPEG data is correct and desubsampling inside JPEG decompression");
+ else
+ TIFFWarningExt(tif->tif_clientdata,module,"Subsampling inside JPEG data does not match subsampling tag values [%d,%d] (nor any other values allowed in TIFF); assuming subsampling inside JPEG data is correct and desubsampling inside JPEG decompression",mh,mv);
+ }
+ if (sp->subsampling_force_desubsampling_inside_decompression==0)
+ {
+ if (sp->subsampling_hor<sp->subsampling_ver)
+ TIFFWarningExt(tif->tif_clientdata,module,"Subsampling values [%d,%d] are not allowed in TIFF",sp->subsampling_hor,sp->subsampling_ver);
+ }
+ }
+ sp->subsamplingcorrect_done=1;
+}
+
+static int
+OJPEGReadHeaderInfo(TIFF* tif)
+{
+ static const char module[]="OJPEGReadHeaderInfo";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ assert(sp->readheader_done==0);
+ sp->image_width=tif->tif_dir.td_imagewidth;
+ sp->image_length=tif->tif_dir.td_imagelength;
+ if isTiled(tif)
+ {
+ sp->strile_width=tif->tif_dir.td_tilewidth;
+ sp->strile_length=tif->tif_dir.td_tilelength;
+ sp->strile_length_total=((sp->image_length+sp->strile_length-1)/sp->strile_length)*sp->strile_length;
+ }
+ else
+ {
+ sp->strile_width=sp->image_width;
+ sp->strile_length=tif->tif_dir.td_rowsperstrip;
+ sp->strile_length_total=sp->image_length;
+ }
+ if (tif->tif_dir.td_samplesperpixel==1)
+ {
+ sp->samples_per_pixel=1;
+ sp->plane_sample_offset=0;
+ sp->samples_per_pixel_per_plane=sp->samples_per_pixel;
+ sp->subsampling_hor=1;
+ sp->subsampling_ver=1;
+ }
+ else
+ {
+ if (tif->tif_dir.td_samplesperpixel!=3)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"SamplesPerPixel %d not supported for this compression scheme",sp->samples_per_pixel);
+ return(0);
+ }
+ sp->samples_per_pixel=3;
+ sp->plane_sample_offset=0;
+ if (tif->tif_dir.td_planarconfig==PLANARCONFIG_CONTIG)
+ sp->samples_per_pixel_per_plane=3;
+ else
+ sp->samples_per_pixel_per_plane=1;
+ }
+ if (sp->strile_length<sp->image_length)
+ {
+ if (sp->strile_length%(sp->subsampling_ver*8)!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Incompatible vertical subsampling and image strip/tile length");
+ return(0);
+ }
+ sp->restart_interval=((sp->strile_width+sp->subsampling_hor*8-1)/(sp->subsampling_hor*8))*(sp->strile_length/(sp->subsampling_ver*8));
+ }
+ if (OJPEGReadHeaderInfoSec(tif)==0)
+ return(0);
+ sp->sos_end[0].log=1;
+ sp->sos_end[0].in_buffer_source=sp->in_buffer_source;
+ sp->sos_end[0].in_buffer_next_strile=sp->in_buffer_next_strile;
+ sp->sos_end[0].in_buffer_file_pos=sp->in_buffer_file_pos-sp->in_buffer_togo;
+ sp->sos_end[0].in_buffer_file_togo=sp->in_buffer_file_togo+sp->in_buffer_togo;
+ sp->readheader_done=1;
+ return(1);
+}
+
+static int
+OJPEGReadSecondarySos(TIFF* tif, uint16 s)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 m;
+ assert(s>0);
+ assert(s<3);
+ assert(sp->sos_end[0].log!=0);
+ assert(sp->sos_end[s].log==0);
+ sp->plane_sample_offset=s-1;
+ while(sp->sos_end[sp->plane_sample_offset].log==0)
+ sp->plane_sample_offset--;
+ sp->in_buffer_source=sp->sos_end[sp->plane_sample_offset].in_buffer_source;
+ sp->in_buffer_next_strile=sp->sos_end[sp->plane_sample_offset].in_buffer_next_strile;
+ sp->in_buffer_file_pos=sp->sos_end[sp->plane_sample_offset].in_buffer_file_pos;
+ sp->in_buffer_file_pos_log=0;
+ sp->in_buffer_file_togo=sp->sos_end[sp->plane_sample_offset].in_buffer_file_togo;
+ sp->in_buffer_togo=0;
+ sp->in_buffer_cur=0;
+ while(sp->plane_sample_offset<s)
+ {
+ do
+ {
+ if (OJPEGReadByte(sp,&m)==0)
+ return(0);
+ if (m==255)
+ {
+ do
+ {
+ if (OJPEGReadByte(sp,&m)==0)
+ return(0);
+ if (m!=255)
+ break;
+ } while(1);
+ if (m==JPEG_MARKER_SOS)
+ break;
+ }
+ } while(1);
+ sp->plane_sample_offset++;
+ if (OJPEGReadHeaderInfoSecStreamSos(tif)==0)
+ return(0);
+ sp->sos_end[sp->plane_sample_offset].log=1;
+ sp->sos_end[sp->plane_sample_offset].in_buffer_source=sp->in_buffer_source;
+ sp->sos_end[sp->plane_sample_offset].in_buffer_next_strile=sp->in_buffer_next_strile;
+ sp->sos_end[sp->plane_sample_offset].in_buffer_file_pos=sp->in_buffer_file_pos-sp->in_buffer_togo;
+ sp->sos_end[sp->plane_sample_offset].in_buffer_file_togo=sp->in_buffer_file_togo+sp->in_buffer_togo;
+ }
+ return(1);
+}
+
+static int
+OJPEGWriteHeaderInfo(TIFF* tif)
+{
+ static const char module[]="OJPEGWriteHeaderInfo";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8** m;
+ uint32 n;
+ /* if a previous attempt failed, don't try again */
+ if (sp->libjpeg_session_active != 0)
+ return 0;
+ sp->out_state=ososSoi;
+ sp->restart_index=0;
+ jpeg_std_error(&(sp->libjpeg_jpeg_error_mgr));
+ sp->libjpeg_jpeg_error_mgr.output_message=OJPEGLibjpegJpegErrorMgrOutputMessage;
+ sp->libjpeg_jpeg_error_mgr.error_exit=OJPEGLibjpegJpegErrorMgrErrorExit;
+ sp->libjpeg_jpeg_decompress_struct.err=&(sp->libjpeg_jpeg_error_mgr);
+ sp->libjpeg_jpeg_decompress_struct.client_data=(void*)tif;
+ if (jpeg_create_decompress_encap(sp,&(sp->libjpeg_jpeg_decompress_struct))==0)
+ return(0);
+ sp->libjpeg_session_active=1;
+ sp->libjpeg_jpeg_source_mgr.bytes_in_buffer=0;
+ sp->libjpeg_jpeg_source_mgr.init_source=OJPEGLibjpegJpegSourceMgrInitSource;
+ sp->libjpeg_jpeg_source_mgr.fill_input_buffer=OJPEGLibjpegJpegSourceMgrFillInputBuffer;
+ sp->libjpeg_jpeg_source_mgr.skip_input_data=OJPEGLibjpegJpegSourceMgrSkipInputData;
+ sp->libjpeg_jpeg_source_mgr.resync_to_restart=OJPEGLibjpegJpegSourceMgrResyncToRestart;
+ sp->libjpeg_jpeg_source_mgr.term_source=OJPEGLibjpegJpegSourceMgrTermSource;
+ sp->libjpeg_jpeg_decompress_struct.src=&(sp->libjpeg_jpeg_source_mgr);
+ if (jpeg_read_header_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),1)==0)
+ return(0);
+ if ((sp->subsampling_force_desubsampling_inside_decompression==0) && (sp->samples_per_pixel_per_plane>1))
+ {
+ sp->libjpeg_jpeg_decompress_struct.raw_data_out=1;
+#if JPEG_LIB_VERSION >= 70
+ sp->libjpeg_jpeg_decompress_struct.do_fancy_upsampling=FALSE;
+#endif
+ sp->libjpeg_jpeg_query_style=0;
+ if (sp->subsampling_convert_log==0)
+ {
+ assert(sp->subsampling_convert_ycbcrbuf==0);
+ assert(sp->subsampling_convert_ycbcrimage==0);
+ sp->subsampling_convert_ylinelen=((sp->strile_width+sp->subsampling_hor*8-1)/(sp->subsampling_hor*8)*sp->subsampling_hor*8);
+ sp->subsampling_convert_ylines=sp->subsampling_ver*8;
+ sp->subsampling_convert_clinelen=sp->subsampling_convert_ylinelen/sp->subsampling_hor;
+ sp->subsampling_convert_clines=8;
+ sp->subsampling_convert_ybuflen=sp->subsampling_convert_ylinelen*sp->subsampling_convert_ylines;
+ sp->subsampling_convert_cbuflen=sp->subsampling_convert_clinelen*sp->subsampling_convert_clines;
+ sp->subsampling_convert_ycbcrbuflen=sp->subsampling_convert_ybuflen+2*sp->subsampling_convert_cbuflen;
+ sp->subsampling_convert_ycbcrbuf = (uint8*)_TIFFmalloc(sp->subsampling_convert_ycbcrbuflen); // add (uint8*) cast
+ if (sp->subsampling_convert_ycbcrbuf==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ sp->subsampling_convert_ybuf=sp->subsampling_convert_ycbcrbuf;
+ sp->subsampling_convert_cbbuf=sp->subsampling_convert_ybuf+sp->subsampling_convert_ybuflen;
+ sp->subsampling_convert_crbuf=sp->subsampling_convert_cbbuf+sp->subsampling_convert_cbuflen;
+ sp->subsampling_convert_ycbcrimagelen=3+sp->subsampling_convert_ylines+2*sp->subsampling_convert_clines;
+ sp->subsampling_convert_ycbcrimage = (uint8**)_TIFFmalloc(sp->subsampling_convert_ycbcrimagelen * sizeof(uint8*));// add (uint8**) cast
+ if (sp->subsampling_convert_ycbcrimage==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ m=sp->subsampling_convert_ycbcrimage;
+ *m++=(uint8*)(sp->subsampling_convert_ycbcrimage+3);
+ *m++=(uint8*)(sp->subsampling_convert_ycbcrimage+3+sp->subsampling_convert_ylines);
+ *m++=(uint8*)(sp->subsampling_convert_ycbcrimage+3+sp->subsampling_convert_ylines+sp->subsampling_convert_clines);
+ for (n=0; n<sp->subsampling_convert_ylines; n++)
+ *m++=sp->subsampling_convert_ybuf+n*sp->subsampling_convert_ylinelen;
+ for (n=0; n<sp->subsampling_convert_clines; n++)
+ *m++=sp->subsampling_convert_cbbuf+n*sp->subsampling_convert_clinelen;
+ for (n=0; n<sp->subsampling_convert_clines; n++)
+ *m++=sp->subsampling_convert_crbuf+n*sp->subsampling_convert_clinelen;
+ sp->subsampling_convert_clinelenout=((sp->strile_width+sp->subsampling_hor-1)/sp->subsampling_hor);
+ sp->subsampling_convert_state=0;
+ sp->bytes_per_line=sp->subsampling_convert_clinelenout*(sp->subsampling_ver*sp->subsampling_hor+2);
+ sp->lines_per_strile=((sp->strile_length+sp->subsampling_ver-1)/sp->subsampling_ver);
+ sp->subsampling_convert_log=1;
+ }
+ }
+ else
+ {
+ sp->libjpeg_jpeg_decompress_struct.jpeg_color_space=JCS_UNKNOWN;
+ sp->libjpeg_jpeg_decompress_struct.out_color_space=JCS_UNKNOWN;
+ sp->libjpeg_jpeg_query_style=1;
+ sp->bytes_per_line=sp->samples_per_pixel_per_plane*sp->strile_width;
+ sp->lines_per_strile=sp->strile_length;
+ }
+ if (jpeg_start_decompress_encap(sp,&(sp->libjpeg_jpeg_decompress_struct))==0)
+ return(0);
+ sp->writeheader_done=1;
+ return(1);
+}
+
+static void
+OJPEGLibjpegSessionAbort(TIFF* tif)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ assert(sp->libjpeg_session_active!=0);
+ jpeg_destroy((jpeg_common_struct*)(&(sp->libjpeg_jpeg_decompress_struct)));
+ sp->libjpeg_session_active=0;
+}
+
+static int
+OJPEGReadHeaderInfoSec(TIFF* tif)
+{
+ static const char module[]="OJPEGReadHeaderInfoSec";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 m;
+ uint16 n;
+ uint8 o;
+ if (sp->file_size==0)
+ sp->file_size=TIFFGetFileSize(tif);
+ if (sp->jpeg_interchange_format!=0)
+ {
+ if (sp->jpeg_interchange_format>=sp->file_size)
+ {
+ sp->jpeg_interchange_format=0;
+ sp->jpeg_interchange_format_length=0;
+ }
+ else
+ {
+ if ((sp->jpeg_interchange_format_length==0) || (sp->jpeg_interchange_format+sp->jpeg_interchange_format_length>sp->file_size))
+ sp->jpeg_interchange_format_length=sp->file_size-sp->jpeg_interchange_format;
+ }
+ }
+ sp->in_buffer_source=osibsNotSetYet;
+ sp->in_buffer_next_strile=0;
+ sp->in_buffer_strile_count=tif->tif_dir.td_nstrips;
+ sp->in_buffer_file_togo=0;
+ sp->in_buffer_togo=0;
+ do
+ {
+ if (OJPEGReadBytePeek(sp,&m)==0)
+ return(0);
+ if (m!=255)
+ break;
+ OJPEGReadByteAdvance(sp);
+ do
+ {
+ if (OJPEGReadByte(sp,&m)==0)
+ return(0);
+ } while(m==255);
+ switch(m)
+ {
+ case JPEG_MARKER_SOI:
+ /* this type of marker has no data, and should be skipped */
+ break;
+ case JPEG_MARKER_COM:
+ case JPEG_MARKER_APP0:
+ case JPEG_MARKER_APP0+1:
+ case JPEG_MARKER_APP0+2:
+ case JPEG_MARKER_APP0+3:
+ case JPEG_MARKER_APP0+4:
+ case JPEG_MARKER_APP0+5:
+ case JPEG_MARKER_APP0+6:
+ case JPEG_MARKER_APP0+7:
+ case JPEG_MARKER_APP0+8:
+ case JPEG_MARKER_APP0+9:
+ case JPEG_MARKER_APP0+10:
+ case JPEG_MARKER_APP0+11:
+ case JPEG_MARKER_APP0+12:
+ case JPEG_MARKER_APP0+13:
+ case JPEG_MARKER_APP0+14:
+ case JPEG_MARKER_APP0+15:
+ /* this type of marker has data, but it has no use to us (and no place here) and should be skipped */
+ if (OJPEGReadWord(sp,&n)==0)
+ return(0);
+ if (n<2)
+ {
+ if (sp->subsamplingcorrect==0)
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JPEG data");
+ return(0);
+ }
+ if (n>2)
+ OJPEGReadSkip(sp,n-2);
+ break;
+ case JPEG_MARKER_DRI:
+ if (OJPEGReadHeaderInfoSecStreamDri(tif)==0)
+ return(0);
+ break;
+ case JPEG_MARKER_DQT:
+ if (OJPEGReadHeaderInfoSecStreamDqt(tif)==0)
+ return(0);
+ break;
+ case JPEG_MARKER_DHT:
+ if (OJPEGReadHeaderInfoSecStreamDht(tif)==0)
+ return(0);
+ break;
+ case JPEG_MARKER_SOF0:
+ case JPEG_MARKER_SOF1:
+ case JPEG_MARKER_SOF3:
+ if (OJPEGReadHeaderInfoSecStreamSof(tif,m)==0)
+ return(0);
+ if (sp->subsamplingcorrect!=0)
+ return(1);
+ break;
+ case JPEG_MARKER_SOS:
+ if (sp->subsamplingcorrect!=0)
+ return(1);
+ assert(sp->plane_sample_offset==0);
+ if (OJPEGReadHeaderInfoSecStreamSos(tif)==0)
+ return(0);
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata,module,"Unknown marker type %d in JPEG data",m);
+ return(0);
+ }
+ } while(m!=JPEG_MARKER_SOS);
+ if (sp->subsamplingcorrect)
+ return(1);
+ if (sp->sof_log==0)
+ {
+ if (OJPEGReadHeaderInfoSecTablesQTable(tif)==0)
+ return(0);
+ sp->sof_marker_id=JPEG_MARKER_SOF0;
+ for (o=0; o<sp->samples_per_pixel; o++)
+ sp->sof_c[o]=o;
+ sp->sof_hv[0]=((sp->subsampling_hor<<4)|sp->subsampling_ver);
+ for (o=1; o<sp->samples_per_pixel; o++)
+ sp->sof_hv[o]=17;
+ sp->sof_x=sp->strile_width;
+ sp->sof_y=sp->strile_length_total;
+ sp->sof_log=1;
+ if (OJPEGReadHeaderInfoSecTablesDcTable(tif)==0)
+ return(0);
+ if (OJPEGReadHeaderInfoSecTablesAcTable(tif)==0)
+ return(0);
+ for (o=1; o<sp->samples_per_pixel; o++)
+ sp->sos_cs[o]=o;
+ }
+ return(1);
+}
+
+static int
+OJPEGReadHeaderInfoSecStreamDri(TIFF* tif)
+{
+ /* this could easilly cause trouble in some cases... but no such cases have occured sofar */
+ static const char module[]="OJPEGReadHeaderInfoSecStreamDri";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint16 m;
+ if (OJPEGReadWord(sp,&m)==0)
+ return(0);
+ if (m!=4)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DRI marker in JPEG data");
+ return(0);
+ }
+ if (OJPEGReadWord(sp,&m)==0)
+ return(0);
+ sp->restart_interval=m;
+ return(1);
+}
+
+static int
+OJPEGReadHeaderInfoSecStreamDqt(TIFF* tif)
+{
+ /* this is a table marker, and it is to be saved as a whole for exact pushing on the jpeg stream later on */
+ static const char module[]="OJPEGReadHeaderInfoSecStreamDqt";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint16 m;
+ uint32 na;
+ uint8* nb;
+ uint8 o;
+ if (OJPEGReadWord(sp,&m)==0)
+ return(0);
+ if (m<=2)
+ {
+ if (sp->subsamplingcorrect==0)
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DQT marker in JPEG data");
+ return(0);
+ }
+ if (sp->subsamplingcorrect!=0)
+ OJPEGReadSkip(sp,m-2);
+ else
+ {
+ m-=2;
+ do
+ {
+ if (m<65)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DQT marker in JPEG data");
+ return(0);
+ }
+ na = sizeof(uint32) + 69;
+ nb = (uint8*)_TIFFmalloc(na); // add (uint8*) cast
+ if (nb == 0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ *(uint32*)nb=na;
+ nb[sizeof(uint32)]=255;
+ nb[sizeof(uint32)+1]=JPEG_MARKER_DQT;
+ nb[sizeof(uint32)+2]=0;
+ nb[sizeof(uint32)+3]=67;
+ if (OJPEGReadBlock(sp,65,&nb[sizeof(uint32)+4])==0) {
+ _TIFFfree(nb);
+ return(0);
+ }
+ o=nb[sizeof(uint32)+4]&15;
+ if (3<o)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DQT marker in JPEG data");
+ _TIFFfree(nb);
+ return(0);
+ }
+ if (sp->qtable[o]!=0)
+ _TIFFfree(sp->qtable[o]);
+ sp->qtable[o]=nb;
+ m-=65;
+ } while(m>0);
+ }
+ return(1);
+}
+
+static int
+OJPEGReadHeaderInfoSecStreamDht(TIFF* tif)
+{
+ /* this is a table marker, and it is to be saved as a whole for exact pushing on the jpeg stream later on */
+ /* TODO: the following assumes there is only one table in this marker... but i'm not quite sure that assumption is guaranteed correct */
+ static const char module[]="OJPEGReadHeaderInfoSecStreamDht";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint16 m;
+ uint32 na;
+ uint8* nb;
+ uint8 o;
+ if (OJPEGReadWord(sp,&m)==0)
+ return(0);
+ if (m<=2)
+ {
+ if (sp->subsamplingcorrect==0)
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DHT marker in JPEG data");
+ return(0);
+ }
+ if (sp->subsamplingcorrect!=0)
+ {
+ OJPEGReadSkip(sp,m-2);
+ }
+ else
+ {
+ na = sizeof(uint32) + 2 + m;
+ nb = (uint8*)_TIFFmalloc(na); // add (uint8*) cast
+ if (nb == 0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ *(uint32*)nb=na;
+ nb[sizeof(uint32)]=255;
+ nb[sizeof(uint32)+1]=JPEG_MARKER_DHT;
+ nb[sizeof(uint32)+2]=(m>>8);
+ nb[sizeof(uint32)+3]=(m&255);
+ if (OJPEGReadBlock(sp,m-2,&nb[sizeof(uint32)+4])==0)
+ return(0);
+ o=nb[sizeof(uint32)+4];
+ if ((o&240)==0)
+ {
+ if (3<o)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DHT marker in JPEG data");
+ return(0);
+ }
+ if (sp->dctable[o]!=0)
+ _TIFFfree(sp->dctable[o]);
+ sp->dctable[o]=nb;
+ }
+ else
+ {
+ if ((o&240)!=16)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DHT marker in JPEG data");
+ return(0);
+ }
+ o&=15;
+ if (3<o)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DHT marker in JPEG data");
+ return(0);
+ }
+ if (sp->actable[o]!=0)
+ _TIFFfree(sp->actable[o]);
+ sp->actable[o]=nb;
+ }
+ }
+ return(1);
+}
+
+static int
+OJPEGReadHeaderInfoSecStreamSof(TIFF* tif, uint8 marker_id)
+{
+ /* this marker needs to be checked, and part of its data needs to be saved for regeneration later on */
+ static const char module[]="OJPEGReadHeaderInfoSecStreamSof";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint16 m;
+ uint16 n;
+ uint8 o;
+ uint16 p;
+ uint16 q;
+ if (sp->sof_log!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JPEG data");
+ return(0);
+ }
+ if (sp->subsamplingcorrect==0)
+ sp->sof_marker_id=marker_id;
+ /* Lf: data length */
+ if (OJPEGReadWord(sp,&m)==0)
+ return(0);
+ if (m<11)
+ {
+ if (sp->subsamplingcorrect==0)
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOF marker in JPEG data");
+ return(0);
+ }
+ m-=8;
+ if (m%3!=0)
+ {
+ if (sp->subsamplingcorrect==0)
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOF marker in JPEG data");
+ return(0);
+ }
+ n=m/3;
+ if (sp->subsamplingcorrect==0)
+ {
+ if (n!=sp->samples_per_pixel)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected number of samples");
+ return(0);
+ }
+ }
+ /* P: Sample precision */
+ if (OJPEGReadByte(sp,&o)==0)
+ return(0);
+ if (o!=8)
+ {
+ if (sp->subsamplingcorrect==0)
+ TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected number of bits per sample");
+ return(0);
+ }
+ /* Y: Number of lines, X: Number of samples per line */
+ if (sp->subsamplingcorrect)
+ OJPEGReadSkip(sp,4);
+ else
+ {
+ /* Y: Number of lines */
+ if (OJPEGReadWord(sp,&p)==0)
+ return(0);
+ if (((uint32)p<sp->image_length) && ((uint32)p<sp->strile_length_total))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected height");
+ return(0);
+ }
+ sp->sof_y=p;
+ /* X: Number of samples per line */
+ if (OJPEGReadWord(sp,&p)==0)
+ return(0);
+ if (((uint32)p<sp->image_width) && ((uint32)p<sp->strile_width))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected width");
+ return(0);
+ }
+ if ((uint32)p>sp->strile_width)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data image width exceeds expected image width");
+ return(0);
+ }
+ sp->sof_x=p;
+ }
+ /* Nf: Number of image components in frame */
+ if (OJPEGReadByte(sp,&o)==0)
+ return(0);
+ if (o!=n)
+ {
+ if (sp->subsamplingcorrect==0)
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOF marker in JPEG data");
+ return(0);
+ }
+ /* per component stuff */
+ /* TODO: double-check that flow implies that n cannot be as big as to make us overflow sof_c, sof_hv and sof_tq arrays */
+ for (q=0; q<n; q++)
+ {
+ /* C: Component identifier */
+ if (OJPEGReadByte(sp,&o)==0)
+ return(0);
+ if (sp->subsamplingcorrect==0)
+ sp->sof_c[q]=o;
+ /* H: Horizontal sampling factor, and V: Vertical sampling factor */
+ if (OJPEGReadByte(sp,&o)==0)
+ return(0);
+ if (sp->subsamplingcorrect!=0)
+ {
+ if (q==0)
+ {
+ sp->subsampling_hor=(o>>4);
+ sp->subsampling_ver=(o&15);
+ if (((sp->subsampling_hor!=1) && (sp->subsampling_hor!=2) && (sp->subsampling_hor!=4)) ||
+ ((sp->subsampling_ver!=1) && (sp->subsampling_ver!=2) && (sp->subsampling_ver!=4)))
+ sp->subsampling_force_desubsampling_inside_decompression=1;
+ }
+ else
+ {
+ if (o!=17)
+ sp->subsampling_force_desubsampling_inside_decompression=1;
+ }
+ }
+ else
+ {
+ sp->sof_hv[q]=o;
+ if (sp->subsampling_force_desubsampling_inside_decompression==0)
+ {
+ if (q==0)
+ {
+ if (o!=((sp->subsampling_hor<<4)|sp->subsampling_ver))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected subsampling values");
+ return(0);
+ }
+ }
+ else
+ {
+ if (o!=17)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected subsampling values");
+ return(0);
+ }
+ }
+ }
+ }
+ /* Tq: Quantization table destination selector */
+ if (OJPEGReadByte(sp,&o)==0)
+ return(0);
+ if (sp->subsamplingcorrect==0)
+ sp->sof_tq[q]=o;
+ }
+ if (sp->subsamplingcorrect==0)
+ sp->sof_log=1;
+ return(1);
+}
+
+static int
+OJPEGReadHeaderInfoSecStreamSos(TIFF* tif)
+{
+ /* this marker needs to be checked, and part of its data needs to be saved for regeneration later on */
+ static const char module[]="OJPEGReadHeaderInfoSecStreamSos";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint16 m;
+ uint8 n;
+ uint8 o;
+ assert(sp->subsamplingcorrect==0);
+ if (sp->sof_log==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOS marker in JPEG data");
+ return(0);
+ }
+ /* Ls */
+ if (OJPEGReadWord(sp,&m)==0)
+ return(0);
+ if (m!=6+sp->samples_per_pixel_per_plane*2)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOS marker in JPEG data");
+ return(0);
+ }
+ /* Ns */
+ if (OJPEGReadByte(sp,&n)==0)
+ return(0);
+ if (n!=sp->samples_per_pixel_per_plane)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOS marker in JPEG data");
+ return(0);
+ }
+ /* Cs, Td, and Ta */
+ for (o=0; o<sp->samples_per_pixel_per_plane; o++)
+ {
+ /* Cs */
+ if (OJPEGReadByte(sp,&n)==0)
+ return(0);
+ sp->sos_cs[sp->plane_sample_offset+o]=n;
+ /* Td and Ta */
+ if (OJPEGReadByte(sp,&n)==0)
+ return(0);
+ sp->sos_tda[sp->plane_sample_offset+o]=n;
+ }
+ /* skip Ss, Se, Ah, en Al -> no check, as per Tom Lane recommendation, as per LibJpeg source */
+ OJPEGReadSkip(sp,3);
+ return(1);
+}
+
+static int
+OJPEGReadHeaderInfoSecTablesQTable(TIFF* tif)
+{
+ static const char module[]="OJPEGReadHeaderInfoSecTablesQTable";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 m;
+ uint8 n;
+ uint32 oa;
+ uint8* ob;
+ uint32 p;
+ if (sp->qtable_offset[0]==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Missing JPEG tables");
+ return(0);
+ }
+ sp->in_buffer_file_pos_log=0;
+ for (m=0; m<sp->samples_per_pixel; m++)
+ {
+ if ((sp->qtable_offset[m]!=0) && ((m==0) || (sp->qtable_offset[m]!=sp->qtable_offset[m-1])))
+ {
+ for (n=0; n<m-1; n++)
+ {
+ if (sp->qtable_offset[m]==sp->qtable_offset[n])
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JpegQTables tag value");
+ return(0);
+ }
+ }
+ oa=sizeof(uint32)+69;
+ ob = (uint8*)_TIFFmalloc(oa); // add (uint8*) cast
+ if (ob==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ *(uint32*)ob=oa;
+ ob[sizeof(uint32)]=255;
+ ob[sizeof(uint32)+1]=JPEG_MARKER_DQT;
+ ob[sizeof(uint32)+2]=0;
+ ob[sizeof(uint32)+3]=67;
+ ob[sizeof(uint32)+4]=m;
+ TIFFSeekFile(tif,sp->qtable_offset[m],SEEK_SET);
+ p=(uint32)TIFFReadFile(tif,&ob[sizeof(uint32)+5],64);
+ if (p!=64)
+ return(0);
+ sp->qtable[m]=ob;
+ sp->sof_tq[m]=m;
+ }
+ else
+ sp->sof_tq[m]=sp->sof_tq[m-1];
+ }
+ return(1);
+}
+
+static int
+OJPEGReadHeaderInfoSecTablesDcTable(TIFF* tif)
+{
+ static const char module[]="OJPEGReadHeaderInfoSecTablesDcTable";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 m;
+ uint8 n;
+ uint8 o[16];
+ uint32 p;
+ uint32 q;
+ uint32 ra;
+ uint8* rb;
+ if (sp->dctable_offset[0]==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Missing JPEG tables");
+ return(0);
+ }
+ sp->in_buffer_file_pos_log=0;
+ for (m=0; m<sp->samples_per_pixel; m++)
+ {
+ if ((sp->dctable_offset[m]!=0) && ((m==0) || (sp->dctable_offset[m]!=sp->dctable_offset[m-1])))
+ {
+ for (n=0; n<m-1; n++)
+ {
+ if (sp->dctable_offset[m]==sp->dctable_offset[n])
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JpegDcTables tag value");
+ return(0);
+ }
+ }
+ TIFFSeekFile(tif,sp->dctable_offset[m],SEEK_SET);
+ p=(uint32)TIFFReadFile(tif,o,16);
+ if (p!=16)
+ return(0);
+ q=0;
+ for (n=0; n<16; n++)
+ q+=o[n];
+ ra=sizeof(uint32)+21+q;
+ rb = (uint8*)_TIFFmalloc(ra); // add (uint8*) cast
+ if (rb==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ *(uint32*)rb=ra;
+ rb[sizeof(uint32)]=255;
+ rb[sizeof(uint32)+1]=JPEG_MARKER_DHT;
+ rb[sizeof(uint32)+2]=((19+q)>>8);
+ rb[sizeof(uint32)+3]=((19+q)&255);
+ rb[sizeof(uint32)+4]=m;
+ for (n=0; n<16; n++)
+ rb[sizeof(uint32)+5+n]=o[n];
+ p=(uint32)TIFFReadFile(tif,&(rb[sizeof(uint32)+21]),q);
+ if (p!=q)
+ return(0);
+ sp->dctable[m]=rb;
+ sp->sos_tda[m]=(m<<4);
+ }
+ else
+ sp->sos_tda[m]=sp->sos_tda[m-1];
+ }
+ return(1);
+}
+
+static int
+OJPEGReadHeaderInfoSecTablesAcTable(TIFF* tif)
+{
+ static const char module[]="OJPEGReadHeaderInfoSecTablesAcTable";
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 m;
+ uint8 n;
+ uint8 o[16];
+ uint32 p;
+ uint32 q;
+ uint32 ra;
+ uint8* rb;
+ if (sp->actable_offset[0]==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Missing JPEG tables");
+ return(0);
+ }
+ sp->in_buffer_file_pos_log=0;
+ for (m=0; m<sp->samples_per_pixel; m++)
+ {
+ if ((sp->actable_offset[m]!=0) && ((m==0) || (sp->actable_offset[m]!=sp->actable_offset[m-1])))
+ {
+ for (n=0; n<m-1; n++)
+ {
+ if (sp->actable_offset[m]==sp->actable_offset[n])
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JpegAcTables tag value");
+ return(0);
+ }
+ }
+ TIFFSeekFile(tif,sp->actable_offset[m],SEEK_SET);
+ p=(uint32)TIFFReadFile(tif,o,16);
+ if (p!=16)
+ return(0);
+ q=0;
+ for (n=0; n<16; n++)
+ q+=o[n];
+ ra=sizeof(uint32)+21+q;
+ rb = (uint8*)_TIFFmalloc(ra); // add (uint8*) cast
+ if (rb==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
+ return(0);
+ }
+ *(uint32*)rb=ra;
+ rb[sizeof(uint32)]=255;
+ rb[sizeof(uint32)+1]=JPEG_MARKER_DHT;
+ rb[sizeof(uint32)+2]=((19+q)>>8);
+ rb[sizeof(uint32)+3]=((19+q)&255);
+ rb[sizeof(uint32)+4]=(16|m);
+ for (n=0; n<16; n++)
+ rb[sizeof(uint32)+5+n]=o[n];
+ p=(uint32)TIFFReadFile(tif,&(rb[sizeof(uint32)+21]),q);
+ if (p!=q)
+ return(0);
+ sp->actable[m]=rb;
+ sp->sos_tda[m]=(sp->sos_tda[m]|m);
+ }
+ else
+ sp->sos_tda[m]=(sp->sos_tda[m]|(sp->sos_tda[m-1]&15));
+ }
+ return(1);
+}
+
+static int
+OJPEGReadBufferFill(OJPEGState* sp)
+{
+ uint16 m;
+ tmsize_t n;
+ /* TODO: double-check: when subsamplingcorrect is set, no call to TIFFErrorExt or TIFFWarningExt should be made
+ * in any other case, seek or read errors should be passed through */
+ do
+ {
+ if (sp->in_buffer_file_togo!=0)
+ {
+ if (sp->in_buffer_file_pos_log==0)
+ {
+ TIFFSeekFile(sp->tif,sp->in_buffer_file_pos,SEEK_SET);
+ sp->in_buffer_file_pos_log=1;
+ }
+ m=OJPEG_BUFFER;
+ if ((uint64)m>sp->in_buffer_file_togo)
+ m=(uint16)sp->in_buffer_file_togo;
+ n=TIFFReadFile(sp->tif,sp->in_buffer,(tmsize_t)m);
+ if (n==0)
+ return(0);
+ assert(n>0);
+ assert(n<=OJPEG_BUFFER);
+ assert(n<65536);
+ assert((uint64)n<=sp->in_buffer_file_togo);
+ m=(uint16)n;
+ sp->in_buffer_togo=m;
+ sp->in_buffer_cur=sp->in_buffer;
+ sp->in_buffer_file_togo-=m;
+ sp->in_buffer_file_pos+=m;
+ break;
+ }
+ sp->in_buffer_file_pos_log=0;
+ switch(sp->in_buffer_source)
+ {
+ case osibsNotSetYet:
+ if (sp->jpeg_interchange_format!=0)
+ {
+ sp->in_buffer_file_pos=sp->jpeg_interchange_format;
+ sp->in_buffer_file_togo=sp->jpeg_interchange_format_length;
+ }
+ sp->in_buffer_source=osibsJpegInterchangeFormat;
+ break;
+ case osibsJpegInterchangeFormat:
+ sp->in_buffer_source=osibsStrile;
+ case osibsStrile:
+ if (!_TIFFFillStriles( sp->tif )
+ || sp->tif->tif_dir.td_stripoffset == NULL
+ || sp->tif->tif_dir.td_stripbytecount == NULL)
+ return 0;
+
+ if (sp->in_buffer_next_strile==sp->in_buffer_strile_count)
+ sp->in_buffer_source=osibsEof;
+ else
+ {
+ sp->in_buffer_file_pos=sp->tif->tif_dir.td_stripoffset[sp->in_buffer_next_strile];
+ if (sp->in_buffer_file_pos!=0)
+ {
+ if (sp->in_buffer_file_pos>=sp->file_size)
+ sp->in_buffer_file_pos=0;
+ else if (sp->tif->tif_dir.td_stripbytecount==NULL)
+ sp->in_buffer_file_togo=sp->file_size-sp->in_buffer_file_pos;
+ else
+ {
+ if (sp->tif->tif_dir.td_stripbytecount == 0) {
+ TIFFErrorExt(sp->tif->tif_clientdata,sp->tif->tif_name,"Strip byte counts are missing");
+ return(0);
+ }
+ sp->in_buffer_file_togo=sp->tif->tif_dir.td_stripbytecount[sp->in_buffer_next_strile];
+ if (sp->in_buffer_file_togo==0)
+ sp->in_buffer_file_pos=0;
+ else if (sp->in_buffer_file_pos+sp->in_buffer_file_togo>sp->file_size)
+ sp->in_buffer_file_togo=sp->file_size-sp->in_buffer_file_pos;
+ }
+ }
+ sp->in_buffer_next_strile++;
+ }
+ break;
+ default:
+ return(0);
+ }
+ } while (1);
+ return(1);
+}
+
+static int
+OJPEGReadByte(OJPEGState* sp, uint8* byte)
+{
+ if (sp->in_buffer_togo==0)
+ {
+ if (OJPEGReadBufferFill(sp)==0)
+ return(0);
+ assert(sp->in_buffer_togo>0);
+ }
+ *byte=*(sp->in_buffer_cur);
+ sp->in_buffer_cur++;
+ sp->in_buffer_togo--;
+ return(1);
+}
+
+static int
+OJPEGReadBytePeek(OJPEGState* sp, uint8* byte)
+{
+ if (sp->in_buffer_togo==0)
+ {
+ if (OJPEGReadBufferFill(sp)==0)
+ return(0);
+ assert(sp->in_buffer_togo>0);
+ }
+ *byte=*(sp->in_buffer_cur);
+ return(1);
+}
+
+static void
+OJPEGReadByteAdvance(OJPEGState* sp)
+{
+ assert(sp->in_buffer_togo>0);
+ sp->in_buffer_cur++;
+ sp->in_buffer_togo--;
+}
+
+static int
+OJPEGReadWord(OJPEGState* sp, uint16* word)
+{
+ uint8 m;
+ if (OJPEGReadByte(sp,&m)==0)
+ return(0);
+ *word=(m<<8);
+ if (OJPEGReadByte(sp,&m)==0)
+ return(0);
+ *word|=m;
+ return(1);
+}
+
+static int
+OJPEGReadBlock(OJPEGState* sp, uint16 len, void* mem)
+{
+ uint16 mlen;
+ uint8* mmem;
+ uint16 n;
+ assert(len>0);
+ mlen=len;
+ mmem = (uint8*)mem; // add (uint8*) cast
+ do
+ {
+ if (sp->in_buffer_togo==0)
+ {
+ if (OJPEGReadBufferFill(sp)==0)
+ return(0);
+ assert(sp->in_buffer_togo>0);
+ }
+ n=mlen;
+ if (n>sp->in_buffer_togo)
+ n=sp->in_buffer_togo;
+ _TIFFmemcpy(mmem,sp->in_buffer_cur,n);
+ sp->in_buffer_cur+=n;
+ sp->in_buffer_togo-=n;
+ mlen-=n;
+ mmem+=n;
+ } while(mlen>0);
+ return(1);
+}
+
+static void
+OJPEGReadSkip(OJPEGState* sp, uint16 len)
+{
+ uint16 m;
+ uint16 n;
+ m=len;
+ n=m;
+ if (n>sp->in_buffer_togo)
+ n=sp->in_buffer_togo;
+ sp->in_buffer_cur+=n;
+ sp->in_buffer_togo-=n;
+ m-=n;
+ if (m>0)
+ {
+ assert(sp->in_buffer_togo==0);
+ n=m;
+ if ((uint64)n>sp->in_buffer_file_togo)
+ n=(uint16)sp->in_buffer_file_togo;
+ sp->in_buffer_file_pos+=n;
+ sp->in_buffer_file_togo-=n;
+ sp->in_buffer_file_pos_log=0;
+ /* we don't skip past jpeginterchangeformat/strile block...
+ * if that is asked from us, we're dealing with totally bazurk
+ * data anyway, and we've not seen this happening on any
+ * testfile, so we might as well likely cause some other
+ * meaningless error to be passed at some later time
+ */
+ }
+}
+
+static int
+OJPEGWriteStream(TIFF* tif, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ *len=0;
+ do
+ {
+ assert(sp->out_state<=ososEoi);
+ switch(sp->out_state)
+ {
+ case ososSoi:
+ OJPEGWriteStreamSoi(tif,mem,len);
+ break;
+ case ososQTable0:
+ OJPEGWriteStreamQTable(tif,0,mem,len);
+ break;
+ case ososQTable1:
+ OJPEGWriteStreamQTable(tif,1,mem,len);
+ break;
+ case ososQTable2:
+ OJPEGWriteStreamQTable(tif,2,mem,len);
+ break;
+ case ososQTable3:
+ OJPEGWriteStreamQTable(tif,3,mem,len);
+ break;
+ case ososDcTable0:
+ OJPEGWriteStreamDcTable(tif,0,mem,len);
+ break;
+ case ososDcTable1:
+ OJPEGWriteStreamDcTable(tif,1,mem,len);
+ break;
+ case ososDcTable2:
+ OJPEGWriteStreamDcTable(tif,2,mem,len);
+ break;
+ case ososDcTable3:
+ OJPEGWriteStreamDcTable(tif,3,mem,len);
+ break;
+ case ososAcTable0:
+ OJPEGWriteStreamAcTable(tif,0,mem,len);
+ break;
+ case ososAcTable1:
+ OJPEGWriteStreamAcTable(tif,1,mem,len);
+ break;
+ case ososAcTable2:
+ OJPEGWriteStreamAcTable(tif,2,mem,len);
+ break;
+ case ososAcTable3:
+ OJPEGWriteStreamAcTable(tif,3,mem,len);
+ break;
+ case ososDri:
+ OJPEGWriteStreamDri(tif,mem,len);
+ break;
+ case ososSof:
+ OJPEGWriteStreamSof(tif,mem,len);
+ break;
+ case ososSos:
+ OJPEGWriteStreamSos(tif,mem,len);
+ break;
+ case ososCompressed:
+ if (OJPEGWriteStreamCompressed(tif,mem,len)==0)
+ return(0);
+ break;
+ case ososRst:
+ OJPEGWriteStreamRst(tif,mem,len);
+ break;
+ case ososEoi:
+ OJPEGWriteStreamEoi(tif,mem,len);
+ break;
+ }
+ } while (*len==0);
+ return(1);
+}
+
+static void
+OJPEGWriteStreamSoi(TIFF* tif, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ assert(OJPEG_BUFFER>=2);
+ sp->out_buffer[0]=255;
+ sp->out_buffer[1]=JPEG_MARKER_SOI;
+ *len=2;
+ *mem=(void*)sp->out_buffer;
+ sp->out_state++;
+}
+
+static void
+OJPEGWriteStreamQTable(TIFF* tif, uint8 table_index, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ if (sp->qtable[table_index]!=0)
+ {
+ *mem=(void*)(sp->qtable[table_index]+sizeof(uint32));
+ *len=*((uint32*)sp->qtable[table_index])-sizeof(uint32);
+ }
+ sp->out_state++;
+}
+
+static void
+OJPEGWriteStreamDcTable(TIFF* tif, uint8 table_index, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ if (sp->dctable[table_index]!=0)
+ {
+ *mem=(void*)(sp->dctable[table_index]+sizeof(uint32));
+ *len=*((uint32*)sp->dctable[table_index])-sizeof(uint32);
+ }
+ sp->out_state++;
+}
+
+static void
+OJPEGWriteStreamAcTable(TIFF* tif, uint8 table_index, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ if (sp->actable[table_index]!=0)
+ {
+ *mem=(void*)(sp->actable[table_index]+sizeof(uint32));
+ *len=*((uint32*)sp->actable[table_index])-sizeof(uint32);
+ }
+ sp->out_state++;
+}
+
+static void
+OJPEGWriteStreamDri(TIFF* tif, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ assert(OJPEG_BUFFER>=6);
+ if (sp->restart_interval!=0)
+ {
+ sp->out_buffer[0]=255;
+ sp->out_buffer[1]=JPEG_MARKER_DRI;
+ sp->out_buffer[2]=0;
+ sp->out_buffer[3]=4;
+ sp->out_buffer[4]=(sp->restart_interval>>8);
+ sp->out_buffer[5]=(sp->restart_interval&255);
+ *len=6;
+ *mem=(void*)sp->out_buffer;
+ }
+ sp->out_state++;
+}
+
+static void
+OJPEGWriteStreamSof(TIFF* tif, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 m;
+ assert(OJPEG_BUFFER>=2+8+sp->samples_per_pixel_per_plane*3);
+ assert(255>=8+sp->samples_per_pixel_per_plane*3);
+ sp->out_buffer[0]=255;
+ sp->out_buffer[1]=sp->sof_marker_id;
+ /* Lf */
+ sp->out_buffer[2]=0;
+ sp->out_buffer[3]=8+sp->samples_per_pixel_per_plane*3;
+ /* P */
+ sp->out_buffer[4]=8;
+ /* Y */
+ sp->out_buffer[5]=(sp->sof_y>>8);
+ sp->out_buffer[6]=(sp->sof_y&255);
+ /* X */
+ sp->out_buffer[7]=(sp->sof_x>>8);
+ sp->out_buffer[8]=(sp->sof_x&255);
+ /* Nf */
+ sp->out_buffer[9]=sp->samples_per_pixel_per_plane;
+ for (m=0; m<sp->samples_per_pixel_per_plane; m++)
+ {
+ /* C */
+ sp->out_buffer[10+m*3]=sp->sof_c[sp->plane_sample_offset+m];
+ /* H and V */
+ sp->out_buffer[10+m*3+1]=sp->sof_hv[sp->plane_sample_offset+m];
+ /* Tq */
+ sp->out_buffer[10+m*3+2]=sp->sof_tq[sp->plane_sample_offset+m];
+ }
+ *len=10+sp->samples_per_pixel_per_plane*3;
+ *mem=(void*)sp->out_buffer;
+ sp->out_state++;
+}
+
+static void
+OJPEGWriteStreamSos(TIFF* tif, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ uint8 m;
+ assert(OJPEG_BUFFER>=2+6+sp->samples_per_pixel_per_plane*2);
+ assert(255>=6+sp->samples_per_pixel_per_plane*2);
+ sp->out_buffer[0]=255;
+ sp->out_buffer[1]=JPEG_MARKER_SOS;
+ /* Ls */
+ sp->out_buffer[2]=0;
+ sp->out_buffer[3]=6+sp->samples_per_pixel_per_plane*2;
+ /* Ns */
+ sp->out_buffer[4]=sp->samples_per_pixel_per_plane;
+ for (m=0; m<sp->samples_per_pixel_per_plane; m++)
+ {
+ /* Cs */
+ sp->out_buffer[5+m*2]=sp->sos_cs[sp->plane_sample_offset+m];
+ /* Td and Ta */
+ sp->out_buffer[5+m*2+1]=sp->sos_tda[sp->plane_sample_offset+m];
+ }
+ /* Ss */
+ sp->out_buffer[5+sp->samples_per_pixel_per_plane*2]=0;
+ /* Se */
+ sp->out_buffer[5+sp->samples_per_pixel_per_plane*2+1]=63;
+ /* Ah and Al */
+ sp->out_buffer[5+sp->samples_per_pixel_per_plane*2+2]=0;
+ *len=8+sp->samples_per_pixel_per_plane*2;
+ *mem=(void*)sp->out_buffer;
+ sp->out_state++;
+}
+
+static int
+OJPEGWriteStreamCompressed(TIFF* tif, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ if (sp->in_buffer_togo==0)
+ {
+ if (OJPEGReadBufferFill(sp)==0)
+ return(0);
+ assert(sp->in_buffer_togo>0);
+ }
+ *len=sp->in_buffer_togo;
+ *mem=(void*)sp->in_buffer_cur;
+ sp->in_buffer_togo=0;
+ if (sp->in_buffer_file_togo==0)
+ {
+ switch(sp->in_buffer_source)
+ {
+ case osibsStrile:
+ if (sp->in_buffer_next_strile<sp->in_buffer_strile_count)
+ sp->out_state=ososRst;
+ else
+ sp->out_state=ososEoi;
+ break;
+ case osibsEof:
+ sp->out_state=ososEoi;
+ break;
+ default:
+ break;
+ }
+ }
+ return(1);
+}
+
+static void
+OJPEGWriteStreamRst(TIFF* tif, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ assert(OJPEG_BUFFER>=2);
+ sp->out_buffer[0]=255;
+ sp->out_buffer[1]=JPEG_MARKER_RST0+sp->restart_index;
+ sp->restart_index++;
+ if (sp->restart_index==8)
+ sp->restart_index=0;
+ *len=2;
+ *mem=(void*)sp->out_buffer;
+ sp->out_state=ososCompressed;
+}
+
+static void
+OJPEGWriteStreamEoi(TIFF* tif, void** mem, uint32* len)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ assert(OJPEG_BUFFER>=2);
+ sp->out_buffer[0]=255;
+ sp->out_buffer[1]=JPEG_MARKER_EOI;
+ *len=2;
+ *mem=(void*)sp->out_buffer;
+}
+
+#ifndef LIBJPEG_ENCAP_EXTERNAL
+static int
+jpeg_create_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo)
+{
+ return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_create_decompress(cinfo),1));
+}
+#endif
+
+#ifndef LIBJPEG_ENCAP_EXTERNAL
+static int
+jpeg_read_header_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, uint8 require_image)
+{
+ return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_read_header(cinfo,require_image),1));
+}
+#endif
+
+#ifndef LIBJPEG_ENCAP_EXTERNAL
+static int
+jpeg_start_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo)
+{
+ return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_start_decompress(cinfo),1));
+}
+#endif
+
+#ifndef LIBJPEG_ENCAP_EXTERNAL
+static int
+jpeg_read_scanlines_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* scanlines, uint32 max_lines)
+{
+ return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_read_scanlines(cinfo,scanlines,max_lines),1));
+}
+#endif
+
+#ifndef LIBJPEG_ENCAP_EXTERNAL
+static int
+jpeg_read_raw_data_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* data, uint32 max_lines)
+{
+ return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_read_raw_data(cinfo,data,max_lines),1));
+}
+#endif
+
+#ifndef LIBJPEG_ENCAP_EXTERNAL
+static void
+jpeg_encap_unwind(TIFF* tif)
+{
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ LONGJMP(sp->exit_jmpbuf,1);
+}
+#endif
+
+static void
+OJPEGLibjpegJpegErrorMgrOutputMessage(jpeg_common_struct* cinfo)
+{
+ char buffer[JMSG_LENGTH_MAX];
+ (*cinfo->err->format_message)(cinfo,buffer);
+ TIFFWarningExt(((TIFF*)(cinfo->client_data))->tif_clientdata,"LibJpeg","%s",buffer);
+}
+
+static void
+OJPEGLibjpegJpegErrorMgrErrorExit(jpeg_common_struct* cinfo)
+{
+ char buffer[JMSG_LENGTH_MAX];
+ (*cinfo->err->format_message)(cinfo,buffer);
+ TIFFErrorExt(((TIFF*)(cinfo->client_data))->tif_clientdata,"LibJpeg","%s",buffer);
+ jpeg_encap_unwind((TIFF*)(cinfo->client_data));
+}
+
+static void
+OJPEGLibjpegJpegSourceMgrInitSource(jpeg_decompress_struct* cinfo)
+{
+ (void)cinfo;
+}
+
+static boolean
+OJPEGLibjpegJpegSourceMgrFillInputBuffer(jpeg_decompress_struct* cinfo)
+{
+ TIFF* tif=(TIFF*)cinfo->client_data;
+ OJPEGState* sp=(OJPEGState*)tif->tif_data;
+ void* mem=0;
+ uint32 len=0U;
+ if (OJPEGWriteStream(tif,&mem,&len)==0)
+ {
+ TIFFErrorExt(tif->tif_clientdata,"LibJpeg","Premature end of JPEG data");
+ jpeg_encap_unwind(tif);
+ }
+ sp->libjpeg_jpeg_source_mgr.bytes_in_buffer = len;
+ sp->libjpeg_jpeg_source_mgr.next_input_byte = (const JOCTET * )mem; // add (const JOCTET * ) cast
+ return(1);
+}
+
+static void
+OJPEGLibjpegJpegSourceMgrSkipInputData(jpeg_decompress_struct* cinfo, long num_bytes)
+{
+ TIFF* tif=(TIFF*)cinfo->client_data;
+ (void)num_bytes;
+ TIFFErrorExt(tif->tif_clientdata,"LibJpeg","Unexpected error");
+ jpeg_encap_unwind(tif);
+}
+
+static boolean
+OJPEGLibjpegJpegSourceMgrResyncToRestart(jpeg_decompress_struct* cinfo, int desired)
+{
+ TIFF* tif=(TIFF*)cinfo->client_data;
+ (void)desired;
+ TIFFErrorExt(tif->tif_clientdata,"LibJpeg","Unexpected error");
+ jpeg_encap_unwind(tif);
+ return(0);
+}
+
+static void
+OJPEGLibjpegJpegSourceMgrTermSource(jpeg_decompress_struct* cinfo)
+{
+ (void)cinfo;
+}
+
+#endif
+
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif//#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_open.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_open.c
new file mode 100644
index 0000000..95e8d1f
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_open.c
@@ -0,0 +1,728 @@
+/* $Id: tif_open.c,v 1.46 2010-12-06 16:54:54 faxguy Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+/*
+ * Dummy functions to fill the omitted client procedures.
+ */
+static int
+_tiffDummyMapProc(thandle_t fd, void** pbase, toff_t* psize)
+{
+ (void) fd; (void) pbase; (void) psize;
+ return (0);
+}
+
+static void
+_tiffDummyUnmapProc(thandle_t fd, void* base, toff_t size)
+{
+ (void) fd; (void) base; (void) size;
+}
+
+int
+_TIFFgetMode(const char* mode, const char* module)
+{
+ int m = -1;
+
+ switch (mode[0]) {
+ case 'r':
+ m = O_RDONLY;
+ if (mode[1] == '+')
+ m = O_RDWR;
+ break;
+ case 'w':
+ case 'a':
+ m = O_RDWR|O_CREAT;
+ if (mode[0] == 'w')
+ m |= O_TRUNC;
+ break;
+ default:
+ TIFFErrorExt(0, module, "\"%s\": Bad mode", mode);
+ break;
+ }
+ return (m);
+}
+
+TIFF*
+TIFFClientOpen(
+ const char* name, const char* mode,
+ thandle_t clientdata,
+ TIFFReadWriteProc readproc,
+ TIFFReadWriteProc writeproc,
+ TIFFSeekProc seekproc,
+ TIFFCloseProc closeproc,
+ TIFFSizeProc sizeproc,
+ TIFFMapFileProc mapproc,
+ TIFFUnmapFileProc unmapproc
+)
+{
+ static const char module[] = "TIFFClientOpen";
+ TIFF *tif;
+ int m;
+ const char* cp;
+
+ /* The following are configuration checks. They should be redundant, but should not
+ * compile to any actual code in an optimised release build anyway. If any of them
+ * fail, (makefile-based or other) configuration is not correct */
+ assert(sizeof(uint8)==1);
+ assert(sizeof(int8)==1);
+ assert(sizeof(uint16)==2);
+ assert(sizeof(int16)==2);
+ assert(sizeof(uint32)==4);
+ assert(sizeof(int32)==4);
+ assert(sizeof(uint64)==8);
+ assert(sizeof(int64)==8);
+ assert(sizeof(tmsize_t)==sizeof(void*));
+ {
+ union{
+ uint8 a8[2];
+ uint16 a16;
+ } n;
+ n.a8[0]=1;
+ n.a8[1]=0;
+ #ifdef WORDS_BIGENDIAN
+ assert(n.a16==256);
+ #else
+ assert(n.a16==1);
+ #endif
+ }
+
+ m = _TIFFgetMode(mode, module);
+ if (m == -1)
+ goto bad2;
+ tif = (TIFF *)_TIFFmalloc((tmsize_t)(sizeof (TIFF) + strlen(name) + 1));
+ if (tif == NULL) {
+ TIFFErrorExt(clientdata, module, "%s: Out of memory (TIFF structure)", name);
+ goto bad2;
+ }
+ _TIFFmemset(tif, 0, sizeof (*tif));
+ tif->tif_name = (char *)tif + sizeof (TIFF);
+ strcpy(tif->tif_name, name);
+ tif->tif_mode = m &~ (O_CREAT|O_TRUNC);
+ tif->tif_curdir = (uint16) -1; /* non-existent directory */
+ tif->tif_curoff = 0;
+ tif->tif_curstrip = (uint32) -1; /* invalid strip */
+ tif->tif_row = (uint32) -1; /* read/write pre-increment */
+ tif->tif_clientdata = clientdata;
+ if (!readproc || !writeproc || !seekproc || !closeproc || !sizeproc) {
+ TIFFErrorExt(clientdata, module,
+ "One of the client procedures is NULL pointer.");
+ goto bad2;
+ }
+ tif->tif_readproc = readproc;
+ tif->tif_writeproc = writeproc;
+ tif->tif_seekproc = seekproc;
+ tif->tif_closeproc = closeproc;
+ tif->tif_sizeproc = sizeproc;
+ if (mapproc)
+ tif->tif_mapproc = mapproc;
+ else
+ tif->tif_mapproc = _tiffDummyMapProc;
+ if (unmapproc)
+ tif->tif_unmapproc = unmapproc;
+ else
+ tif->tif_unmapproc = _tiffDummyUnmapProc;
+ _TIFFSetDefaultCompressionState(tif); /* setup default state */
+ /*
+ * Default is to return data MSB2LSB and enable the
+ * use of memory-mapped files and strip chopping when
+ * a file is opened read-only.
+ */
+ tif->tif_flags = FILLORDER_MSB2LSB;
+ if (m == O_RDONLY )
+ tif->tif_flags |= TIFF_MAPPED;
+
+ #ifdef STRIPCHOP_DEFAULT
+ if (m == O_RDONLY || m == O_RDWR)
+ tif->tif_flags |= STRIPCHOP_DEFAULT;
+ #endif
+
+ /*
+ * Process library-specific flags in the open mode string.
+ * The following flags may be used to control intrinsic library
+ * behaviour that may or may not be desirable (usually for
+ * compatibility with some application that claims to support
+ * TIFF but only supports some braindead idea of what the
+ * vendor thinks TIFF is):
+ *
+ * 'l' use little-endian byte order for creating a file
+ * 'b' use big-endian byte order for creating a file
+ * 'L' read/write information using LSB2MSB bit order
+ * 'B' read/write information using MSB2LSB bit order
+ * 'H' read/write information using host bit order
+ * 'M' enable use of memory-mapped files when supported
+ * 'm' disable use of memory-mapped files
+ * 'C' enable strip chopping support when reading
+ * 'c' disable strip chopping support
+ * 'h' read TIFF header only, do not load the first IFD
+ * '4' ClassicTIFF for creating a file (default)
+ * '8' BigTIFF for creating a file
+ *
+ * The use of the 'l' and 'b' flags is strongly discouraged.
+ * These flags are provided solely because numerous vendors,
+ * typically on the PC, do not correctly support TIFF; they
+ * only support the Intel little-endian byte order. This
+ * support is not configured by default because it supports
+ * the violation of the TIFF spec that says that readers *MUST*
+ * support both byte orders. It is strongly recommended that
+ * you not use this feature except to deal with busted apps
+ * that write invalid TIFF. And even in those cases you should
+ * bang on the vendors to fix their software.
+ *
+ * The 'L', 'B', and 'H' flags are intended for applications
+ * that can optimize operations on data by using a particular
+ * bit order. By default the library returns data in MSB2LSB
+ * bit order for compatibiltiy with older versions of this
+ * library. Returning data in the bit order of the native cpu
+ * makes the most sense but also requires applications to check
+ * the value of the FillOrder tag; something they probably do
+ * not do right now.
+ *
+ * The 'M' and 'm' flags are provided because some virtual memory
+ * systems exhibit poor behaviour when large images are mapped.
+ * These options permit clients to control the use of memory-mapped
+ * files on a per-file basis.
+ *
+ * The 'C' and 'c' flags are provided because the library support
+ * for chopping up large strips into multiple smaller strips is not
+ * application-transparent and as such can cause problems. The 'c'
+ * option permits applications that only want to look at the tags,
+ * for example, to get the unadulterated TIFF tag information.
+ */
+ for (cp = mode; *cp; cp++)
+ switch (*cp) {
+ case 'b':
+ #ifndef WORDS_BIGENDIAN
+ if (m&O_CREAT)
+ tif->tif_flags |= TIFF_SWAB;
+ #endif
+ break;
+ case 'l':
+ #ifdef WORDS_BIGENDIAN
+ if ((m&O_CREAT))
+ tif->tif_flags |= TIFF_SWAB;
+ #endif
+ break;
+ case 'B':
+ tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+ FILLORDER_MSB2LSB;
+ break;
+ case 'L':
+ tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+ FILLORDER_LSB2MSB;
+ break;
+ case 'H':
+ tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+ HOST_FILLORDER;
+ break;
+ case 'M':
+ if (m == O_RDONLY)
+ tif->tif_flags |= TIFF_MAPPED;
+ break;
+ case 'm':
+ if (m == O_RDONLY)
+ tif->tif_flags &= ~TIFF_MAPPED;
+ break;
+ case 'C':
+ if (m == O_RDONLY)
+ tif->tif_flags |= TIFF_STRIPCHOP;
+ break;
+ case 'c':
+ if (m == O_RDONLY)
+ tif->tif_flags &= ~TIFF_STRIPCHOP;
+ break;
+ case 'h':
+ tif->tif_flags |= TIFF_HEADERONLY;
+ break;
+ case '8':
+ if (m&O_CREAT)
+ tif->tif_flags |= TIFF_BIGTIFF;
+ break;
+ }
+ /*
+ * Read in TIFF header.
+ */
+ if ((m & O_TRUNC) ||
+ !ReadOK(tif, &tif->tif_header, sizeof (TIFFHeaderClassic))) {
+ if (tif->tif_mode == O_RDONLY) {
+ TIFFErrorExt(tif->tif_clientdata, name,
+ "Cannot read TIFF header");
+ goto bad;
+ }
+ /*
+ * Setup header and write.
+ */
+ #ifdef WORDS_BIGENDIAN
+ tif->tif_header.common.tiff_magic = tif->tif_flags & TIFF_SWAB
+ ? TIFF_LITTLEENDIAN : TIFF_BIGENDIAN;
+ #else
+ tif->tif_header.common.tiff_magic = tif->tif_flags & TIFF_SWAB
+ ? TIFF_BIGENDIAN : TIFF_LITTLEENDIAN;
+ #endif
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ tif->tif_header.common.tiff_version = TIFF_VERSION_CLASSIC;
+ tif->tif_header.classic.tiff_diroff = 0;
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&tif->tif_header.common.tiff_version);
+ tif->tif_header_size = sizeof(TIFFHeaderClassic);
+ }
+ else
+ {
+ tif->tif_header.common.tiff_version = TIFF_VERSION_BIG;
+ tif->tif_header.big.tiff_offsetsize = 8;
+ tif->tif_header.big.tiff_unused = 0;
+ tif->tif_header.big.tiff_diroff = 0;
+ if (tif->tif_flags & TIFF_SWAB)
+ {
+ TIFFSwabShort(&tif->tif_header.common.tiff_version);
+ TIFFSwabShort(&tif->tif_header.big.tiff_offsetsize);
+ }
+ tif->tif_header_size = sizeof (TIFFHeaderBig);
+ }
+ /*
+ * The doc for "fopen" for some STD_C_LIBs says that if you
+ * open a file for modify ("+"), then you must fseek (or
+ * fflush?) between any freads and fwrites. This is not
+ * necessary on most systems, but has been shown to be needed
+ * on Solaris.
+ */
+ TIFFSeekFile( tif, 0, SEEK_SET );
+ if (!WriteOK(tif, &tif->tif_header, (tmsize_t)(tif->tif_header_size))) {
+ TIFFErrorExt(tif->tif_clientdata, name,
+ "Error writing TIFF header");
+ goto bad;
+ }
+ /*
+ * Setup the byte order handling.
+ */
+ if (tif->tif_header.common.tiff_magic == TIFF_BIGENDIAN) {
+ #ifndef WORDS_BIGENDIAN
+ tif->tif_flags |= TIFF_SWAB;
+ #endif
+ } else {
+ #ifdef WORDS_BIGENDIAN
+ tif->tif_flags |= TIFF_SWAB;
+ #endif
+ }
+ /*
+ * Setup default directory.
+ */
+ if (!TIFFDefaultDirectory(tif))
+ goto bad;
+ tif->tif_diroff = 0;
+ tif->tif_dirlist = NULL;
+ tif->tif_dirlistsize = 0;
+ tif->tif_dirnumber = 0;
+ return (tif);
+ }
+ /*
+ * Setup the byte order handling.
+ */
+ if (tif->tif_header.common.tiff_magic != TIFF_BIGENDIAN &&
+ tif->tif_header.common.tiff_magic != TIFF_LITTLEENDIAN
+ #if MDI_SUPPORT
+ &&
+ #if HOST_BIGENDIAN
+ tif->tif_header.common.tiff_magic != MDI_BIGENDIAN
+ #else
+ tif->tif_header.common.tiff_magic != MDI_LITTLEENDIAN
+ #endif
+ ) {
+ TIFFErrorExt(tif->tif_clientdata, name,
+ "Not a TIFF or MDI file, bad magic number %d (0x%x)",
+ #else
+ ) {
+ TIFFErrorExt(tif->tif_clientdata, name,
+ "Not a TIFF file, bad magic number %d (0x%x)",
+ #endif
+ tif->tif_header.common.tiff_magic,
+ tif->tif_header.common.tiff_magic);
+ goto bad;
+ }
+ if (tif->tif_header.common.tiff_magic == TIFF_BIGENDIAN) {
+ #ifndef WORDS_BIGENDIAN
+ tif->tif_flags |= TIFF_SWAB;
+ #endif
+ } else {
+ #ifdef WORDS_BIGENDIAN
+ tif->tif_flags |= TIFF_SWAB;
+ #endif
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&tif->tif_header.common.tiff_version);
+ if ((tif->tif_header.common.tiff_version != TIFF_VERSION_CLASSIC)&&
+ (tif->tif_header.common.tiff_version != TIFF_VERSION_BIG)) {
+ TIFFErrorExt(tif->tif_clientdata, name,
+ "Not a TIFF file, bad version number %d (0x%x)",
+ tif->tif_header.common.tiff_version,
+ tif->tif_header.common.tiff_version);
+ goto bad;
+ }
+ if (tif->tif_header.common.tiff_version == TIFF_VERSION_CLASSIC)
+ {
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&tif->tif_header.classic.tiff_diroff);
+ tif->tif_header_size = sizeof(TIFFHeaderClassic);
+ }
+ else
+ {
+ if (!ReadOK(tif, ((uint8*)(&tif->tif_header) + sizeof(TIFFHeaderClassic)), (sizeof(TIFFHeaderBig)-sizeof(TIFFHeaderClassic))))
+ {
+ TIFFErrorExt(tif->tif_clientdata, name,
+ "Cannot read TIFF header");
+ goto bad;
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ {
+ TIFFSwabShort(&tif->tif_header.big.tiff_offsetsize);
+ TIFFSwabLong8(&tif->tif_header.big.tiff_diroff);
+ }
+ if (tif->tif_header.big.tiff_offsetsize != 8)
+ {
+ TIFFErrorExt(tif->tif_clientdata, name,
+ "Not a TIFF file, bad BigTIFF offsetsize %d (0x%x)",
+ tif->tif_header.big.tiff_offsetsize,
+ tif->tif_header.big.tiff_offsetsize);
+ goto bad;
+ }
+ if (tif->tif_header.big.tiff_unused != 0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, name,
+ "Not a TIFF file, bad BigTIFF unused %d (0x%x)",
+ tif->tif_header.big.tiff_unused,
+ tif->tif_header.big.tiff_unused);
+ goto bad;
+ }
+ tif->tif_header_size = sizeof(TIFFHeaderBig);
+ tif->tif_flags |= TIFF_BIGTIFF;
+ }
+ tif->tif_flags |= TIFF_MYBUFFER;
+ tif->tif_rawcp = tif->tif_rawdata = 0;
+ tif->tif_rawdatasize = 0;
+ tif->tif_rawdataoff = 0;
+ tif->tif_rawdataloaded = 0;
+
+ switch (mode[0]) {
+ case 'r':
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ tif->tif_nextdiroff = tif->tif_header.classic.tiff_diroff;
+ else
+ tif->tif_nextdiroff = tif->tif_header.big.tiff_diroff;
+ /*
+ * Try to use a memory-mapped file if the client
+ * has not explicitly suppressed usage with the
+ * 'm' flag in the open mode (see above).
+ */
+ if (tif->tif_flags & TIFF_MAPPED)
+ {
+ toff_t n;
+ if (TIFFMapFileContents(tif,(void**)(&tif->tif_base),&n))
+ {
+ tif->tif_size=(tmsize_t)n;
+ assert((toff_t)tif->tif_size==n);
+ }
+ else
+ tif->tif_flags &= ~TIFF_MAPPED;
+ }
+ /*
+ * Sometimes we do not want to read the first directory (for example,
+ * it may be broken) and want to proceed to other directories. I this
+ * case we use the TIFF_HEADERONLY flag to open file and return
+ * immediately after reading TIFF header.
+ */
+ if (tif->tif_flags & TIFF_HEADERONLY)
+ return (tif);
+
+ /*
+ * Setup initial directory.
+ */
+ if (TIFFReadDirectory(tif)) {
+ tif->tif_rawcc = (tmsize_t)-1;
+ tif->tif_flags |= TIFF_BUFFERSETUP;
+ return (tif);
+ }
+ break;
+ case 'a':
+ /*
+ * New directories are automatically append
+ * to the end of the directory chain when they
+ * are written out (see TIFFWriteDirectory).
+ */
+ if (!TIFFDefaultDirectory(tif))
+ goto bad;
+ return (tif);
+ }
+bad:
+ tif->tif_mode = O_RDONLY; /* XXX avoid flush */
+ TIFFCleanup(tif);
+bad2:
+ return ((TIFF*)0);
+}
+
+/*
+ * Query functions to access private data.
+ */
+
+/*
+ * Return open file's name.
+ */
+const char *
+TIFFFileName(TIFF* tif)
+{
+ return (tif->tif_name);
+}
+
+/*
+ * Set the file name.
+ */
+const char *
+TIFFSetFileName(TIFF* tif, const char *name)
+{
+ const char* old_name = tif->tif_name;
+ tif->tif_name = (char *)name;
+ return (old_name);
+}
+
+/*
+ * Return open file's I/O descriptor.
+ */
+int
+TIFFFileno(TIFF* tif)
+{
+ return (tif->tif_fd);
+}
+
+/*
+ * Set open file's I/O descriptor, and return previous value.
+ */
+int
+TIFFSetFileno(TIFF* tif, int fd)
+{
+ int old_fd = tif->tif_fd;
+ tif->tif_fd = fd;
+ return old_fd;
+}
+
+/*
+ * Return open file's clientdata.
+ */
+thandle_t
+TIFFClientdata(TIFF* tif)
+{
+ return (tif->tif_clientdata);
+}
+
+/*
+ * Set open file's clientdata, and return previous value.
+ */
+thandle_t
+TIFFSetClientdata(TIFF* tif, thandle_t newvalue)
+{
+ thandle_t m = tif->tif_clientdata;
+ tif->tif_clientdata = newvalue;
+ return m;
+}
+
+/*
+ * Return read/write mode.
+ */
+int
+TIFFGetMode(TIFF* tif)
+{
+ return (tif->tif_mode);
+}
+
+/*
+ * Return read/write mode.
+ */
+int
+TIFFSetMode(TIFF* tif, int mode)
+{
+ int old_mode = tif->tif_mode;
+ tif->tif_mode = mode;
+ return (old_mode);
+}
+
+/*
+ * Return nonzero if file is organized in
+ * tiles; zero if organized as strips.
+ */
+int
+TIFFIsTiled(TIFF* tif)
+{
+ return (isTiled(tif));
+}
+
+/*
+ * Return current row being read/written.
+ */
+uint32
+TIFFCurrentRow(TIFF* tif)
+{
+ return (tif->tif_row);
+}
+
+/*
+ * Return index of the current directory.
+ */
+uint16
+TIFFCurrentDirectory(TIFF* tif)
+{
+ return (tif->tif_curdir);
+}
+
+/*
+ * Return current strip.
+ */
+uint32
+TIFFCurrentStrip(TIFF* tif)
+{
+ return (tif->tif_curstrip);
+}
+
+/*
+ * Return current tile.
+ */
+uint32
+TIFFCurrentTile(TIFF* tif)
+{
+ return (tif->tif_curtile);
+}
+
+/*
+ * Return nonzero if the file has byte-swapped data.
+ */
+int
+TIFFIsByteSwapped(TIFF* tif)
+{
+ return ((tif->tif_flags & TIFF_SWAB) != 0);
+}
+
+/*
+ * Return nonzero if the data is returned up-sampled.
+ */
+int
+TIFFIsUpSampled(TIFF* tif)
+{
+ return (isUpSampled(tif));
+}
+
+/*
+ * Return nonzero if the data is returned in MSB-to-LSB bit order.
+ */
+int
+TIFFIsMSB2LSB(TIFF* tif)
+{
+ return (isFillOrder(tif, FILLORDER_MSB2LSB));
+}
+
+/*
+ * Return nonzero if given file was written in big-endian order.
+ */
+int
+TIFFIsBigEndian(TIFF* tif)
+{
+ return (tif->tif_header.common.tiff_magic == TIFF_BIGENDIAN);
+}
+
+/*
+ * Return pointer to file read method.
+ */
+TIFFReadWriteProc
+TIFFGetReadProc(TIFF* tif)
+{
+ return (tif->tif_readproc);
+}
+
+/*
+ * Return pointer to file write method.
+ */
+TIFFReadWriteProc
+TIFFGetWriteProc(TIFF* tif)
+{
+ return (tif->tif_writeproc);
+}
+
+/*
+ * Return pointer to file seek method.
+ */
+TIFFSeekProc
+TIFFGetSeekProc(TIFF* tif)
+{
+ return (tif->tif_seekproc);
+}
+
+/*
+ * Return pointer to file close method.
+ */
+TIFFCloseProc
+TIFFGetCloseProc(TIFF* tif)
+{
+ return (tif->tif_closeproc);
+}
+
+/*
+ * Return pointer to file size requesting method.
+ */
+TIFFSizeProc
+TIFFGetSizeProc(TIFF* tif)
+{
+ return (tif->tif_sizeproc);
+}
+
+/*
+ * Return pointer to memory mapping method.
+ */
+TIFFMapFileProc
+TIFFGetMapFileProc(TIFF* tif)
+{
+ return (tif->tif_mapproc);
+}
+
+/*
+ * Return pointer to memory unmapping method.
+ */
+TIFFUnmapFileProc
+TIFFGetUnmapFileProc(TIFF* tif)
+{
+ return (tif->tif_unmapproc);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_packbits.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_packbits.c
new file mode 100644
index 0000000..6fb517f
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_packbits.c
@@ -0,0 +1,302 @@
+/* $Id: tif_packbits.c,v 1.22 2012-06-20 05:25:33 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#ifdef PACKBITS_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * PackBits Compression Algorithm Support
+ */
+#include <stdio.h>
+
+static int
+PackBitsPreEncode(TIFF* tif, uint16 s)
+{
+ (void) s;
+
+ if (!(tif->tif_data = (uint8*)_TIFFmalloc(sizeof(tmsize_t))))
+ return (0);
+ /*
+ * Calculate the scanline/tile-width size in bytes.
+ */
+ if (isTiled(tif))
+ *(tmsize_t*)tif->tif_data = TIFFTileRowSize(tif);
+ else
+ *(tmsize_t*)tif->tif_data = TIFFScanlineSize(tif);
+ return (1);
+}
+
+static int
+PackBitsPostEncode(TIFF* tif)
+{
+ if (tif->tif_data)
+ _TIFFfree(tif->tif_data);
+ return (1);
+}
+
+/*
+ * Encode a run of pixels.
+ */
+static int
+PackBitsEncode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
+{
+ unsigned char* bp = (unsigned char*) buf;
+ uint8* op;
+ uint8* ep;
+ uint8* lastliteral;
+ long n, slop;
+ int b;
+ enum { BASE, LITERAL, RUN, LITERAL_RUN } state;
+
+ (void) s;
+ op = tif->tif_rawcp;
+ ep = tif->tif_rawdata + tif->tif_rawdatasize;
+ state = BASE;
+ lastliteral = 0;
+ while (cc > 0) {
+ /*
+ * Find the longest string of identical bytes.
+ */
+ b = *bp++, cc--, n = 1;
+ for (; cc > 0 && b == *bp; cc--, bp++)
+ n++;
+ again:
+ if (op + 2 >= ep) { /* insure space for new data */
+ /*
+ * Be careful about writing the last
+ * literal. Must write up to that point
+ * and then copy the remainder to the
+ * front of the buffer.
+ */
+ if (state == LITERAL || state == LITERAL_RUN) {
+ slop = (long)(op - lastliteral);
+ tif->tif_rawcc += (tmsize_t)(lastliteral - tif->tif_rawcp);
+ if (!TIFFFlushData1(tif))
+ return (-1);
+ op = tif->tif_rawcp;
+ while (slop-- > 0)
+ *op++ = *lastliteral++;
+ lastliteral = tif->tif_rawcp;
+ } else {
+ tif->tif_rawcc += (tmsize_t)(op - tif->tif_rawcp);
+ if (!TIFFFlushData1(tif))
+ return (-1);
+ op = tif->tif_rawcp;
+ }
+ }
+ switch (state) {
+ case BASE: /* initial state, set run/literal */
+ if (n > 1) {
+ state = RUN;
+ if (n > 128) {
+ *op++ = (uint8) -127;
+ *op++ = (uint8) b;
+ n -= 128;
+ goto again;
+ }
+ *op++ = (uint8)(-(n-1));
+ *op++ = (uint8) b;
+ } else {
+ lastliteral = op;
+ *op++ = 0;
+ *op++ = (uint8) b;
+ state = LITERAL;
+ }
+ break;
+ case LITERAL: /* last object was literal string */
+ if (n > 1) {
+ state = LITERAL_RUN;
+ if (n > 128) {
+ *op++ = (uint8) -127;
+ *op++ = (uint8) b;
+ n -= 128;
+ goto again;
+ }
+ *op++ = (uint8)(-(n-1)); /* encode run */
+ *op++ = (uint8) b;
+ } else { /* extend literal */
+ if (++(*lastliteral) == 127)
+ state = BASE;
+ *op++ = (uint8) b;
+ }
+ break;
+ case RUN: /* last object was run */
+ if (n > 1) {
+ if (n > 128) {
+ *op++ = (uint8) -127;
+ *op++ = (uint8) b;
+ n -= 128;
+ goto again;
+ }
+ *op++ = (uint8)(-(n-1));
+ *op++ = (uint8) b;
+ } else {
+ lastliteral = op;
+ *op++ = 0;
+ *op++ = (uint8) b;
+ state = LITERAL;
+ }
+ break;
+ case LITERAL_RUN: /* literal followed by a run */
+ /*
+ * Check to see if previous run should
+ * be converted to a literal, in which
+ * case we convert literal-run-literal
+ * to a single literal.
+ */
+ if (n == 1 && op[-2] == (uint8) -1 &&
+ *lastliteral < 126) {
+ state = (((*lastliteral) += 2) == 127 ?
+ BASE : LITERAL);
+ op[-2] = op[-1]; /* replicate */
+ } else
+ state = RUN;
+ goto again;
+ }
+ }
+ tif->tif_rawcc += (tmsize_t)(op - tif->tif_rawcp);
+ tif->tif_rawcp = op;
+ return (1);
+}
+
+/*
+ * Encode a rectangular chunk of pixels. We break it up
+ * into row-sized pieces to insure that encoded runs do
+ * not span rows. Otherwise, there can be problems with
+ * the decoder if data is read, for example, by scanlines
+ * when it was encoded by strips.
+ */
+static int
+PackBitsEncodeChunk(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ tmsize_t rowsize = *(tmsize_t*)tif->tif_data;
+
+ while (cc > 0) {
+ tmsize_t chunk = rowsize;
+
+ if( cc < chunk )
+ chunk = cc;
+
+ if (PackBitsEncode(tif, bp, chunk, s) < 0)
+ return (-1);
+ bp += chunk;
+ cc -= chunk;
+ }
+ return (1);
+}
+
+static int
+PackBitsDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
+{
+ static const char module[] = "PackBitsDecode";
+ char *bp;
+ tmsize_t cc;
+ long n;
+ int b;
+
+ (void) s;
+ bp = (char*) tif->tif_rawcp;
+ cc = tif->tif_rawcc;
+ while (cc > 0 && occ > 0) {
+ n = (long) *bp++, cc--;
+ /*
+ * Watch out for compilers that
+ * don't sign extend chars...
+ */
+ if (n >= 128)
+ n -= 256;
+ if (n < 0) { /* replicate next byte -n+1 times */
+ if (n == -128) /* nop */
+ continue;
+ n = -n + 1;
+ if( occ < (tmsize_t)n )
+ {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Discarding %lu bytes to avoid buffer overrun",
+ (unsigned long) ((tmsize_t)n - occ));
+ n = (long)occ;
+ }
+ occ -= n;
+ b = *bp++, cc--;
+ while (n-- > 0)
+ *op++ = (uint8) b;
+ } else { /* copy next n+1 bytes literally */
+ if (occ < (tmsize_t)(n + 1))
+ {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Discarding %lu bytes to avoid buffer overrun",
+ (unsigned long) ((tmsize_t)n - occ + 1));
+ n = (long)occ - 1;
+ }
+ if (cc < (tmsize_t) (n+1))
+ {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "Terminating PackBitsDecode due to lack of data.");
+ break;
+ }
+ _TIFFmemcpy(op, bp, ++n);
+ op += n; occ -= n;
+ bp += n; cc -= n;
+ }
+ }
+ tif->tif_rawcp = (uint8*) bp;
+ tif->tif_rawcc = cc;
+ if (occ > 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data for scanline %lu",
+ (unsigned long) tif->tif_row);
+ return (0);
+ }
+ return (1);
+}
+
+int
+TIFFInitPackBits(TIFF* tif, int scheme)
+{
+ (void) scheme;
+ tif->tif_decoderow = PackBitsDecode;
+ tif->tif_decodestrip = PackBitsDecode;
+ tif->tif_decodetile = PackBitsDecode;
+ tif->tif_preencode = PackBitsPreEncode;
+ tif->tif_postencode = PackBitsPostEncode;
+ tif->tif_encoderow = PackBitsEncode;
+ tif->tif_encodestrip = PackBitsEncodeChunk;
+ tif->tif_encodetile = PackBitsEncodeChunk;
+ return (1);
+}
+#endif /* PACKBITS_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_pixarlog.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_pixarlog.c
new file mode 100644
index 0000000..5aaf8be
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_pixarlog.c
@@ -0,0 +1,1428 @@
+/* $Id: tif_pixarlog.c,v 1.38 2012-06-21 01:01:53 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1996-1997 Sam Leffler
+ * Copyright (c) 1996 Pixar
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Pixar, Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Pixar, Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL PIXAR, SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#ifdef PIXARLOG_SUPPORT
+
+/*
+ * TIFF Library.
+ * PixarLog Compression Support
+ *
+ * Contributed by Dan McCoy.
+ *
+ * PixarLog film support uses the TIFF library to store companded
+ * 11 bit values into a tiff file, which are compressed using the
+ * zip compressor.
+ *
+ * The codec can take as input and produce as output 32-bit IEEE float values
+ * as well as 16-bit or 8-bit unsigned integer values.
+ *
+ * On writing any of the above are converted into the internal
+ * 11-bit log format. In the case of 8 and 16 bit values, the
+ * input is assumed to be unsigned linear color values that represent
+ * the range 0-1. In the case of IEEE values, the 0-1 range is assumed to
+ * be the normal linear color range, in addition over 1 values are
+ * accepted up to a value of about 25.0 to encode "hot" hightlights and such.
+ * The encoding is lossless for 8-bit values, slightly lossy for the
+ * other bit depths. The actual color precision should be better
+ * than the human eye can perceive with extra room to allow for
+ * error introduced by further image computation. As with any quantized
+ * color format, it is possible to perform image calculations which
+ * expose the quantization error. This format should certainly be less
+ * susceptable to such errors than standard 8-bit encodings, but more
+ * susceptable than straight 16-bit or 32-bit encodings.
+ *
+ * On reading the internal format is converted to the desired output format.
+ * The program can request which format it desires by setting the internal
+ * pseudo tag TIFFTAG_PIXARLOGDATAFMT to one of these possible values:
+ * PIXARLOGDATAFMT_FLOAT = provide IEEE float values.
+ * PIXARLOGDATAFMT_16BIT = provide unsigned 16-bit integer values
+ * PIXARLOGDATAFMT_8BIT = provide unsigned 8-bit integer values
+ *
+ * alternately PIXARLOGDATAFMT_8BITABGR provides unsigned 8-bit integer
+ * values with the difference that if there are exactly three or four channels
+ * (rgb or rgba) it swaps the channel order (bgr or abgr).
+ *
+ * PIXARLOGDATAFMT_11BITLOG provides the internal encoding directly
+ * packed in 16-bit values. However no tools are supplied for interpreting
+ * these values.
+ *
+ * "hot" (over 1.0) areas written in floating point get clamped to
+ * 1.0 in the integer data types.
+ *
+ * When the file is closed after writing, the bit depth and sample format
+ * are set always to appear as if 8-bit data has been written into it.
+ * That way a naive program unaware of the particulars of the encoding
+ * gets the format it is most likely able to handle.
+ *
+ * The codec does it's own horizontal differencing step on the coded
+ * values so the libraries predictor stuff should be turned off.
+ * The codec also handle byte swapping the encoded values as necessary
+ * since the library does not have the information necessary
+ * to know the bit depth of the raw unencoded buffer.
+ *
+ * NOTE: This decoder does not appear to update tif_rawcp, and tif_rawcc.
+ * This can cause problems with the implementation of CHUNKY_STRIP_READ_SUPPORT
+ * as noted in http://trac.osgeo.org/gdal/ticket/3894. FrankW - Jan'11
+ */
+
+#include "tif_predict.h"
+#include "../../fx_zlib/include/fx_zlib.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+/* Tables for converting to/from 11 bit coded values */
+
+#define TSIZE 2048 /* decode table size (11-bit tokens) */
+#define TSIZEP1 2049 /* Plus one for slop */
+#define ONE 1250 /* token value of 1.0 exactly */
+#define RATIO 1.004 /* nominal ratio for log part */
+
+#define CODE_MASK 0x7ff /* 11 bits. */
+
+static float Fltsize;
+static float LogK1, LogK2;
+
+#define REPEAT(n, op) { int i; i=n; do { i--; op; } while (i>0); }
+
+static void
+horizontalAccumulateF(uint16 *wp, int n, int stride, float *op,
+ float *ToLinearF)
+{
+ register unsigned int cr, cg, cb, ca, mask;
+ register float t0, t1, t2, t3;
+
+ if (n >= stride) {
+ mask = CODE_MASK;
+ if (stride == 3) {
+ t0 = ToLinearF[cr = (wp[0] & mask)];
+ t1 = ToLinearF[cg = (wp[1] & mask)];
+ t2 = ToLinearF[cb = (wp[2] & mask)];
+ op[0] = t0;
+ op[1] = t1;
+ op[2] = t2;
+ n -= 3;
+ while (n > 0) {
+ wp += 3;
+ op += 3;
+ n -= 3;
+ t0 = ToLinearF[(cr += wp[0]) & mask];
+ t1 = ToLinearF[(cg += wp[1]) & mask];
+ t2 = ToLinearF[(cb += wp[2]) & mask];
+ op[0] = t0;
+ op[1] = t1;
+ op[2] = t2;
+ }
+ } else if (stride == 4) {
+ t0 = ToLinearF[cr = (wp[0] & mask)];
+ t1 = ToLinearF[cg = (wp[1] & mask)];
+ t2 = ToLinearF[cb = (wp[2] & mask)];
+ t3 = ToLinearF[ca = (wp[3] & mask)];
+ op[0] = t0;
+ op[1] = t1;
+ op[2] = t2;
+ op[3] = t3;
+ n -= 4;
+ while (n > 0) {
+ wp += 4;
+ op += 4;
+ n -= 4;
+ t0 = ToLinearF[(cr += wp[0]) & mask];
+ t1 = ToLinearF[(cg += wp[1]) & mask];
+ t2 = ToLinearF[(cb += wp[2]) & mask];
+ t3 = ToLinearF[(ca += wp[3]) & mask];
+ op[0] = t0;
+ op[1] = t1;
+ op[2] = t2;
+ op[3] = t3;
+ }
+ } else {
+ REPEAT(stride, *op = ToLinearF[*wp&mask]; wp++; op++)
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride,
+ wp[stride] += *wp; *op = ToLinearF[*wp&mask]; wp++; op++)
+ n -= stride;
+ }
+ }
+ }
+}
+
+static void
+horizontalAccumulate12(uint16 *wp, int n, int stride, int16 *op,
+ float *ToLinearF)
+{
+ register unsigned int cr, cg, cb, ca, mask;
+ register float t0, t1, t2, t3;
+
+#define SCALE12 2048.0F
+#define CLAMP12(t) (((t) < 3071) ? (uint16) (t) : 3071)
+
+ if (n >= stride) {
+ mask = CODE_MASK;
+ if (stride == 3) {
+ t0 = ToLinearF[cr = (wp[0] & mask)] * SCALE12;
+ t1 = ToLinearF[cg = (wp[1] & mask)] * SCALE12;
+ t2 = ToLinearF[cb = (wp[2] & mask)] * SCALE12;
+ op[0] = CLAMP12(t0);
+ op[1] = CLAMP12(t1);
+ op[2] = CLAMP12(t2);
+ n -= 3;
+ while (n > 0) {
+ wp += 3;
+ op += 3;
+ n -= 3;
+ t0 = ToLinearF[(cr += wp[0]) & mask] * SCALE12;
+ t1 = ToLinearF[(cg += wp[1]) & mask] * SCALE12;
+ t2 = ToLinearF[(cb += wp[2]) & mask] * SCALE12;
+ op[0] = CLAMP12(t0);
+ op[1] = CLAMP12(t1);
+ op[2] = CLAMP12(t2);
+ }
+ } else if (stride == 4) {
+ t0 = ToLinearF[cr = (wp[0] & mask)] * SCALE12;
+ t1 = ToLinearF[cg = (wp[1] & mask)] * SCALE12;
+ t2 = ToLinearF[cb = (wp[2] & mask)] * SCALE12;
+ t3 = ToLinearF[ca = (wp[3] & mask)] * SCALE12;
+ op[0] = CLAMP12(t0);
+ op[1] = CLAMP12(t1);
+ op[2] = CLAMP12(t2);
+ op[3] = CLAMP12(t3);
+ n -= 4;
+ while (n > 0) {
+ wp += 4;
+ op += 4;
+ n -= 4;
+ t0 = ToLinearF[(cr += wp[0]) & mask] * SCALE12;
+ t1 = ToLinearF[(cg += wp[1]) & mask] * SCALE12;
+ t2 = ToLinearF[(cb += wp[2]) & mask] * SCALE12;
+ t3 = ToLinearF[(ca += wp[3]) & mask] * SCALE12;
+ op[0] = CLAMP12(t0);
+ op[1] = CLAMP12(t1);
+ op[2] = CLAMP12(t2);
+ op[3] = CLAMP12(t3);
+ }
+ } else {
+ REPEAT(stride, t0 = ToLinearF[*wp&mask] * SCALE12;
+ *op = CLAMP12(t0); wp++; op++)
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride,
+ wp[stride] += *wp; t0 = ToLinearF[wp[stride]&mask]*SCALE12;
+ *op = CLAMP12(t0); wp++; op++)
+ n -= stride;
+ }
+ }
+ }
+}
+
+static void
+horizontalAccumulate16(uint16 *wp, int n, int stride, uint16 *op,
+ uint16 *ToLinear16)
+{
+ register unsigned int cr, cg, cb, ca, mask;
+
+ if (n >= stride) {
+ mask = CODE_MASK;
+ if (stride == 3) {
+ op[0] = ToLinear16[cr = (wp[0] & mask)];
+ op[1] = ToLinear16[cg = (wp[1] & mask)];
+ op[2] = ToLinear16[cb = (wp[2] & mask)];
+ n -= 3;
+ while (n > 0) {
+ wp += 3;
+ op += 3;
+ n -= 3;
+ op[0] = ToLinear16[(cr += wp[0]) & mask];
+ op[1] = ToLinear16[(cg += wp[1]) & mask];
+ op[2] = ToLinear16[(cb += wp[2]) & mask];
+ }
+ } else if (stride == 4) {
+ op[0] = ToLinear16[cr = (wp[0] & mask)];
+ op[1] = ToLinear16[cg = (wp[1] & mask)];
+ op[2] = ToLinear16[cb = (wp[2] & mask)];
+ op[3] = ToLinear16[ca = (wp[3] & mask)];
+ n -= 4;
+ while (n > 0) {
+ wp += 4;
+ op += 4;
+ n -= 4;
+ op[0] = ToLinear16[(cr += wp[0]) & mask];
+ op[1] = ToLinear16[(cg += wp[1]) & mask];
+ op[2] = ToLinear16[(cb += wp[2]) & mask];
+ op[3] = ToLinear16[(ca += wp[3]) & mask];
+ }
+ } else {
+ REPEAT(stride, *op = ToLinear16[*wp&mask]; wp++; op++)
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride,
+ wp[stride] += *wp; *op = ToLinear16[*wp&mask]; wp++; op++)
+ n -= stride;
+ }
+ }
+ }
+}
+
+/*
+ * Returns the log encoded 11-bit values with the horizontal
+ * differencing undone.
+ */
+static void
+horizontalAccumulate11(uint16 *wp, int n, int stride, uint16 *op)
+{
+ register unsigned int cr, cg, cb, ca, mask;
+
+ if (n >= stride) {
+ mask = CODE_MASK;
+ if (stride == 3) {
+ op[0] = cr = wp[0]; op[1] = cg = wp[1]; op[2] = cb = wp[2];
+ n -= 3;
+ while (n > 0) {
+ wp += 3;
+ op += 3;
+ n -= 3;
+ op[0] = (cr += wp[0]) & mask;
+ op[1] = (cg += wp[1]) & mask;
+ op[2] = (cb += wp[2]) & mask;
+ }
+ } else if (stride == 4) {
+ op[0] = cr = wp[0]; op[1] = cg = wp[1];
+ op[2] = cb = wp[2]; op[3] = ca = wp[3];
+ n -= 4;
+ while (n > 0) {
+ wp += 4;
+ op += 4;
+ n -= 4;
+ op[0] = (cr += wp[0]) & mask;
+ op[1] = (cg += wp[1]) & mask;
+ op[2] = (cb += wp[2]) & mask;
+ op[3] = (ca += wp[3]) & mask;
+ }
+ } else {
+ REPEAT(stride, *op = *wp&mask; wp++; op++)
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride,
+ wp[stride] += *wp; *op = *wp&mask; wp++; op++)
+ n -= stride;
+ }
+ }
+ }
+}
+
+static void
+horizontalAccumulate8(uint16 *wp, int n, int stride, unsigned char *op,
+ unsigned char *ToLinear8)
+{
+ register unsigned int cr, cg, cb, ca, mask;
+
+ if (n >= stride) {
+ mask = CODE_MASK;
+ if (stride == 3) {
+ op[0] = ToLinear8[cr = (wp[0] & mask)];
+ op[1] = ToLinear8[cg = (wp[1] & mask)];
+ op[2] = ToLinear8[cb = (wp[2] & mask)];
+ n -= 3;
+ while (n > 0) {
+ n -= 3;
+ wp += 3;
+ op += 3;
+ op[0] = ToLinear8[(cr += wp[0]) & mask];
+ op[1] = ToLinear8[(cg += wp[1]) & mask];
+ op[2] = ToLinear8[(cb += wp[2]) & mask];
+ }
+ } else if (stride == 4) {
+ op[0] = ToLinear8[cr = (wp[0] & mask)];
+ op[1] = ToLinear8[cg = (wp[1] & mask)];
+ op[2] = ToLinear8[cb = (wp[2] & mask)];
+ op[3] = ToLinear8[ca = (wp[3] & mask)];
+ n -= 4;
+ while (n > 0) {
+ n -= 4;
+ wp += 4;
+ op += 4;
+ op[0] = ToLinear8[(cr += wp[0]) & mask];
+ op[1] = ToLinear8[(cg += wp[1]) & mask];
+ op[2] = ToLinear8[(cb += wp[2]) & mask];
+ op[3] = ToLinear8[(ca += wp[3]) & mask];
+ }
+ } else {
+ REPEAT(stride, *op = ToLinear8[*wp&mask]; wp++; op++)
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride,
+ wp[stride] += *wp; *op = ToLinear8[*wp&mask]; wp++; op++)
+ n -= stride;
+ }
+ }
+ }
+}
+
+
+static void
+horizontalAccumulate8abgr(uint16 *wp, int n, int stride, unsigned char *op,
+ unsigned char *ToLinear8)
+{
+ register unsigned int cr, cg, cb, ca, mask;
+ register unsigned char t0, t1, t2, t3;
+
+ if (n >= stride) {
+ mask = CODE_MASK;
+ if (stride == 3) {
+ op[0] = 0;
+ t1 = ToLinear8[cb = (wp[2] & mask)];
+ t2 = ToLinear8[cg = (wp[1] & mask)];
+ t3 = ToLinear8[cr = (wp[0] & mask)];
+ op[1] = t1;
+ op[2] = t2;
+ op[3] = t3;
+ n -= 3;
+ while (n > 0) {
+ n -= 3;
+ wp += 3;
+ op += 4;
+ op[0] = 0;
+ t1 = ToLinear8[(cb += wp[2]) & mask];
+ t2 = ToLinear8[(cg += wp[1]) & mask];
+ t3 = ToLinear8[(cr += wp[0]) & mask];
+ op[1] = t1;
+ op[2] = t2;
+ op[3] = t3;
+ }
+ } else if (stride == 4) {
+ t0 = ToLinear8[ca = (wp[3] & mask)];
+ t1 = ToLinear8[cb = (wp[2] & mask)];
+ t2 = ToLinear8[cg = (wp[1] & mask)];
+ t3 = ToLinear8[cr = (wp[0] & mask)];
+ op[0] = t0;
+ op[1] = t1;
+ op[2] = t2;
+ op[3] = t3;
+ n -= 4;
+ while (n > 0) {
+ n -= 4;
+ wp += 4;
+ op += 4;
+ t0 = ToLinear8[(ca += wp[3]) & mask];
+ t1 = ToLinear8[(cb += wp[2]) & mask];
+ t2 = ToLinear8[(cg += wp[1]) & mask];
+ t3 = ToLinear8[(cr += wp[0]) & mask];
+ op[0] = t0;
+ op[1] = t1;
+ op[2] = t2;
+ op[3] = t3;
+ }
+ } else {
+ REPEAT(stride, *op = ToLinear8[*wp&mask]; wp++; op++)
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride,
+ wp[stride] += *wp; *op = ToLinear8[*wp&mask]; wp++; op++)
+ n -= stride;
+ }
+ }
+ }
+}
+
+/*
+ * State block for each open TIFF
+ * file using PixarLog compression/decompression.
+ */
+typedef struct {
+ TIFFPredictorState predict;
+ z_stream stream;
+ uint16 *tbuf;
+ uint16 stride;
+ int state;
+ int user_datafmt;
+ int quality;
+#define PLSTATE_INIT 1
+
+ TIFFVSetMethod vgetparent; /* super-class method */
+ TIFFVSetMethod vsetparent; /* super-class method */
+
+ float *ToLinearF;
+ uint16 *ToLinear16;
+ unsigned char *ToLinear8;
+ uint16 *FromLT2;
+ uint16 *From14; /* Really for 16-bit data, but we shift down 2 */
+ uint16 *From8;
+
+} PixarLogState;
+
+static int
+PixarLogMakeTables(PixarLogState *sp)
+{
+
+/*
+ * We make several tables here to convert between various external
+ * representations (float, 16-bit, and 8-bit) and the internal
+ * 11-bit companded representation. The 11-bit representation has two
+ * distinct regions. A linear bottom end up through .018316 in steps
+ * of about .000073, and a region of constant ratio up to about 25.
+ * These floating point numbers are stored in the main table ToLinearF.
+ * All other tables are derived from this one. The tables (and the
+ * ratios) are continuous at the internal seam.
+ */
+
+ int nlin, lt2size;
+ int i, j;
+ double b, c, linstep, v;
+ float *ToLinearF;
+ uint16 *ToLinear16;
+ unsigned char *ToLinear8;
+ uint16 *FromLT2;
+ uint16 *From14; /* Really for 16-bit data, but we shift down 2 */
+ uint16 *From8;
+
+ c = log(RATIO);
+ nlin = (int)(1./c); /* nlin must be an integer */
+ c = 1./nlin;
+ b = exp(-c*ONE); /* multiplicative scale factor [b*exp(c*ONE) = 1] */
+ linstep = b*c*exp(1.);
+
+ LogK1 = (float)(1./c); /* if (v >= 2) token = k1*log(v*k2) */
+ LogK2 = (float)(1./b);
+ lt2size = (int)(2./linstep) + 1;
+ FromLT2 = (uint16 *)_TIFFmalloc(lt2size*sizeof(uint16));
+ From14 = (uint16 *)_TIFFmalloc(16384*sizeof(uint16));
+ From8 = (uint16 *)_TIFFmalloc(256*sizeof(uint16));
+ ToLinearF = (float *)_TIFFmalloc(TSIZEP1 * sizeof(float));
+ ToLinear16 = (uint16 *)_TIFFmalloc(TSIZEP1 * sizeof(uint16));
+ ToLinear8 = (unsigned char *)_TIFFmalloc(TSIZEP1 * sizeof(unsigned char));
+ if (FromLT2 == NULL || From14 == NULL || From8 == NULL ||
+ ToLinearF == NULL || ToLinear16 == NULL || ToLinear8 == NULL) {
+ if (FromLT2) _TIFFfree(FromLT2);
+ if (From14) _TIFFfree(From14);
+ if (From8) _TIFFfree(From8);
+ if (ToLinearF) _TIFFfree(ToLinearF);
+ if (ToLinear16) _TIFFfree(ToLinear16);
+ if (ToLinear8) _TIFFfree(ToLinear8);
+ sp->FromLT2 = NULL;
+ sp->From14 = NULL;
+ sp->From8 = NULL;
+ sp->ToLinearF = NULL;
+ sp->ToLinear16 = NULL;
+ sp->ToLinear8 = NULL;
+ return 0;
+ }
+
+ j = 0;
+
+ for (i = 0; i < nlin; i++) {
+ v = i * linstep;
+ ToLinearF[j++] = (float)v;
+ }
+
+ for (i = nlin; i < TSIZE; i++)
+ ToLinearF[j++] = (float)(b*exp(c*i));
+
+ ToLinearF[2048] = ToLinearF[2047];
+
+ for (i = 0; i < TSIZEP1; i++) {
+ v = ToLinearF[i]*65535.0 + 0.5;
+ ToLinear16[i] = (v > 65535.0) ? 65535 : (uint16)v;
+ v = ToLinearF[i]*255.0 + 0.5;
+ ToLinear8[i] = (v > 255.0) ? 255 : (unsigned char)v;
+ }
+
+ j = 0;
+ for (i = 0; i < lt2size; i++) {
+ if ((i*linstep)*(i*linstep) > ToLinearF[j]*ToLinearF[j+1])
+ j++;
+ FromLT2[i] = j;
+ }
+
+ /*
+ * Since we lose info anyway on 16-bit data, we set up a 14-bit
+ * table and shift 16-bit values down two bits on input.
+ * saves a little table space.
+ */
+ j = 0;
+ for (i = 0; i < 16384; i++) {
+ while ((i/16383.)*(i/16383.) > ToLinearF[j]*ToLinearF[j+1])
+ j++;
+ From14[i] = j;
+ }
+
+ j = 0;
+ for (i = 0; i < 256; i++) {
+ while ((i/255.)*(i/255.) > ToLinearF[j]*ToLinearF[j+1])
+ j++;
+ From8[i] = j;
+ }
+
+ Fltsize = (float)(lt2size/2);
+
+ sp->ToLinearF = ToLinearF;
+ sp->ToLinear16 = ToLinear16;
+ sp->ToLinear8 = ToLinear8;
+ sp->FromLT2 = FromLT2;
+ sp->From14 = From14;
+ sp->From8 = From8;
+
+ return 1;
+}
+
+#define DecoderState(tif) ((PixarLogState*) (tif)->tif_data)
+#define EncoderState(tif) ((PixarLogState*) (tif)->tif_data)
+
+static int PixarLogEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s);
+static int PixarLogDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s);
+
+#define PIXARLOGDATAFMT_UNKNOWN -1
+
+static int
+PixarLogGuessDataFmt(TIFFDirectory *td)
+{
+ int guess = PIXARLOGDATAFMT_UNKNOWN;
+ int format = td->td_sampleformat;
+
+ /* If the user didn't tell us his datafmt,
+ * take our best guess from the bitspersample.
+ */
+ switch (td->td_bitspersample) {
+ case 32:
+ if (format == SAMPLEFORMAT_IEEEFP)
+ guess = PIXARLOGDATAFMT_FLOAT;
+ break;
+ case 16:
+ if (format == SAMPLEFORMAT_VOID || format == SAMPLEFORMAT_UINT)
+ guess = PIXARLOGDATAFMT_16BIT;
+ break;
+ case 12:
+ if (format == SAMPLEFORMAT_VOID || format == SAMPLEFORMAT_INT)
+ guess = PIXARLOGDATAFMT_12BITPICIO;
+ break;
+ case 11:
+ if (format == SAMPLEFORMAT_VOID || format == SAMPLEFORMAT_UINT)
+ guess = PIXARLOGDATAFMT_11BITLOG;
+ break;
+ case 8:
+ if (format == SAMPLEFORMAT_VOID || format == SAMPLEFORMAT_UINT)
+ guess = PIXARLOGDATAFMT_8BIT;
+ break;
+ }
+
+ return guess;
+}
+
+static tmsize_t
+multiply_ms(tmsize_t m1, tmsize_t m2)
+{
+ tmsize_t bytes = m1 * m2;
+
+ if (m1 && bytes / m1 != m2)
+ bytes = 0;
+
+ return bytes;
+}
+
+static int
+PixarLogFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
+
+static int
+PixarLogSetupDecode(TIFF* tif)
+{
+ static const char module[] = "PixarLogSetupDecode";
+ TIFFDirectory *td = &tif->tif_dir;
+ PixarLogState* sp = DecoderState(tif);
+ tmsize_t tbuf_size;
+
+ assert(sp != NULL);
+
+ /* Make sure no byte swapping happens on the data
+ * after decompression. */
+ tif->tif_postdecode = _TIFFNoPostDecode;
+
+ /* for some reason, we can't do this in TIFFInitPixarLog */
+
+ sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
+ td->td_samplesperpixel : 1);
+ tbuf_size = multiply_ms(multiply_ms(multiply_ms(sp->stride, td->td_imagewidth),
+ td->td_rowsperstrip), sizeof(uint16));
+ if (tbuf_size == 0)
+ return (0); /* TODO: this is an error return without error report through TIFFErrorExt */
+ sp->tbuf = (uint16 *) _TIFFmalloc(tbuf_size+sizeof(uint16)*sp->stride);
+ if (sp->tbuf == NULL)
+ return (0);
+ if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN)
+ sp->user_datafmt = PixarLogGuessDataFmt(td);
+ if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "PixarLog compression can't handle bits depth/data format combination (depth: %d)",
+ td->td_bitspersample);
+ return (0);
+ }
+
+ if (inflateInit(&sp->stream) != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s", sp->stream.msg);
+ return (0);
+ } else {
+ sp->state |= PLSTATE_INIT;
+ return (1);
+ }
+}
+
+/*
+ * Setup state for decoding a strip.
+ */
+static int
+PixarLogPreDecode(TIFF* tif, uint16 s)
+{
+ static const char module[] = "PixarLogPreDecode";
+ PixarLogState* sp = DecoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+ sp->stream.next_in = tif->tif_rawdata;
+ assert(sizeof(sp->stream.avail_in)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_in = (uInt) tif->tif_rawcc;
+ if ((tmsize_t)sp->stream.avail_in != tif->tif_rawcc)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
+ return (inflateReset(&sp->stream) == Z_OK);
+}
+
+static int
+PixarLogDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
+{
+ static const char module[] = "PixarLogDecode";
+ TIFFDirectory *td = &tif->tif_dir;
+ PixarLogState* sp = DecoderState(tif);
+ tmsize_t i;
+ tmsize_t nsamples;
+ int llen;
+ uint16 *up;
+
+ switch (sp->user_datafmt) {
+ case PIXARLOGDATAFMT_FLOAT:
+ nsamples = occ / sizeof(float); /* XXX float == 32 bits */
+ break;
+ case PIXARLOGDATAFMT_16BIT:
+ case PIXARLOGDATAFMT_12BITPICIO:
+ case PIXARLOGDATAFMT_11BITLOG:
+ nsamples = occ / sizeof(uint16); /* XXX uint16 == 16 bits */
+ break;
+ case PIXARLOGDATAFMT_8BIT:
+ case PIXARLOGDATAFMT_8BITABGR:
+ nsamples = occ;
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%d bit input not supported in PixarLog",
+ td->td_bitspersample);
+ return 0;
+ }
+
+ llen = sp->stride * td->td_imagewidth;
+
+ (void) s;
+ assert(sp != NULL);
+ sp->stream.next_out = (unsigned char *) sp->tbuf;
+ assert(sizeof(sp->stream.avail_out)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_out = (uInt) (nsamples * sizeof(uint16));
+ if (sp->stream.avail_out != nsamples * sizeof(uint16))
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
+ do {
+ int state = inflate(&sp->stream, Z_PARTIAL_FLUSH);
+ if (state == Z_STREAM_END) {
+ break; /* XXX */
+ }
+ if (state == Z_DATA_ERROR) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Decoding error at scanline %lu, %s",
+ (unsigned long) tif->tif_row, sp->stream.msg);
+ if (inflateSync(&sp->stream) != Z_OK)
+ return (0);
+ continue;
+ }
+ if (state != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
+ return (0);
+ }
+ } while (sp->stream.avail_out > 0);
+
+ /* hopefully, we got all the bytes we needed */
+ if (sp->stream.avail_out != 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %lu (short " TIFF_UINT64_FORMAT " bytes)",
+ (unsigned long) tif->tif_row, (TIFF_UINT64_T) sp->stream.avail_out);
+ return (0);
+ }
+
+ up = sp->tbuf;
+ /* Swap bytes in the data if from a different endian machine. */
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabArrayOfShort(up, nsamples);
+
+ /*
+ * if llen is not an exact multiple of nsamples, the decode operation
+ * may overflow the output buffer, so truncate it enough to prevent
+ * that but still salvage as much data as possible.
+ */
+ if (nsamples % llen) {
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "stride %lu is not a multiple of sample count, "
+ "%lu, data truncated.", (unsigned long) llen, (unsigned long) nsamples);
+ nsamples -= nsamples % llen;
+ }
+
+ for (i = 0; i < nsamples; i += llen, up += llen) {
+ switch (sp->user_datafmt) {
+ case PIXARLOGDATAFMT_FLOAT:
+ horizontalAccumulateF(up, llen, sp->stride,
+ (float *)op, sp->ToLinearF);
+ op += llen * sizeof(float);
+ break;
+ case PIXARLOGDATAFMT_16BIT:
+ horizontalAccumulate16(up, llen, sp->stride,
+ (uint16 *)op, sp->ToLinear16);
+ op += llen * sizeof(uint16);
+ break;
+ case PIXARLOGDATAFMT_12BITPICIO:
+ horizontalAccumulate12(up, llen, sp->stride,
+ (int16 *)op, sp->ToLinearF);
+ op += llen * sizeof(int16);
+ break;
+ case PIXARLOGDATAFMT_11BITLOG:
+ horizontalAccumulate11(up, llen, sp->stride,
+ (uint16 *)op);
+ op += llen * sizeof(uint16);
+ break;
+ case PIXARLOGDATAFMT_8BIT:
+ horizontalAccumulate8(up, llen, sp->stride,
+ (unsigned char *)op, sp->ToLinear8);
+ op += llen * sizeof(unsigned char);
+ break;
+ case PIXARLOGDATAFMT_8BITABGR:
+ horizontalAccumulate8abgr(up, llen, sp->stride,
+ (unsigned char *)op, sp->ToLinear8);
+ op += llen * sizeof(unsigned char);
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Unsupported bits/sample: %d",
+ td->td_bitspersample);
+ return (0);
+ }
+ }
+
+ return (1);
+}
+
+static int
+PixarLogSetupEncode(TIFF* tif)
+{
+ static const char module[] = "PixarLogSetupEncode";
+ TIFFDirectory *td = &tif->tif_dir;
+ PixarLogState* sp = EncoderState(tif);
+ tmsize_t tbuf_size;
+
+ assert(sp != NULL);
+
+ /* for some reason, we can't do this in TIFFInitPixarLog */
+
+ sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
+ td->td_samplesperpixel : 1);
+ tbuf_size = multiply_ms(multiply_ms(multiply_ms(sp->stride, td->td_imagewidth),
+ td->td_rowsperstrip), sizeof(uint16));
+ if (tbuf_size == 0)
+ return (0); /* TODO: this is an error return without error report through TIFFErrorExt */
+ sp->tbuf = (uint16 *) _TIFFmalloc(tbuf_size);
+ if (sp->tbuf == NULL)
+ return (0);
+ if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN)
+ sp->user_datafmt = PixarLogGuessDataFmt(td);
+ if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN) {
+ TIFFErrorExt(tif->tif_clientdata, module, "PixarLog compression can't handle %d bit linear encodings", td->td_bitspersample);
+ return (0);
+ }
+
+ if (deflateInit(&sp->stream, sp->quality) != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s", sp->stream.msg);
+ return (0);
+ } else {
+ sp->state |= PLSTATE_INIT;
+ return (1);
+ }
+}
+
+/*
+ * Reset encoding state at the start of a strip.
+ */
+static int
+PixarLogPreEncode(TIFF* tif, uint16 s)
+{
+ static const char module[] = "PixarLogPreEncode";
+ PixarLogState *sp = EncoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+ sp->stream.next_out = tif->tif_rawdata;
+ assert(sizeof(sp->stream.avail_out)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_out = (uInt)tif->tif_rawdatasize;
+ if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
+ return (deflateReset(&sp->stream) == Z_OK);
+}
+
+static void
+horizontalDifferenceF(float *ip, int n, int stride, uint16 *wp, uint16 *FromLT2)
+{
+ int32 r1, g1, b1, a1, r2, g2, b2, a2, mask;
+ float fltsize = Fltsize;
+
+#define CLAMP(v) ( (v<(float)0.) ? 0 \
+ : (v<(float)2.) ? FromLT2[(int)(v*fltsize)] \
+ : (v>(float)24.2) ? 2047 \
+ : LogK1*log(v*LogK2) + 0.5 )
+
+ mask = CODE_MASK;
+ if (n >= stride) {
+ if (stride == 3) {
+ r2 = wp[0] = (uint16) CLAMP(ip[0]);
+ g2 = wp[1] = (uint16) CLAMP(ip[1]);
+ b2 = wp[2] = (uint16) CLAMP(ip[2]);
+ n -= 3;
+ while (n > 0) {
+ n -= 3;
+ wp += 3;
+ ip += 3;
+ r1 = (int32) CLAMP(ip[0]); wp[0] = (r1-r2) & mask; r2 = r1;
+ g1 = (int32) CLAMP(ip[1]); wp[1] = (g1-g2) & mask; g2 = g1;
+ b1 = (int32) CLAMP(ip[2]); wp[2] = (b1-b2) & mask; b2 = b1;
+ }
+ } else if (stride == 4) {
+ r2 = wp[0] = (uint16) CLAMP(ip[0]);
+ g2 = wp[1] = (uint16) CLAMP(ip[1]);
+ b2 = wp[2] = (uint16) CLAMP(ip[2]);
+ a2 = wp[3] = (uint16) CLAMP(ip[3]);
+ n -= 4;
+ while (n > 0) {
+ n -= 4;
+ wp += 4;
+ ip += 4;
+ r1 = (int32) CLAMP(ip[0]); wp[0] = (r1-r2) & mask; r2 = r1;
+ g1 = (int32) CLAMP(ip[1]); wp[1] = (g1-g2) & mask; g2 = g1;
+ b1 = (int32) CLAMP(ip[2]); wp[2] = (b1-b2) & mask; b2 = b1;
+ a1 = (int32) CLAMP(ip[3]); wp[3] = (a1-a2) & mask; a2 = a1;
+ }
+ } else {
+ ip += n - 1; /* point to last one */
+ wp += n - 1; /* point to last one */
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride, wp[0] = (uint16) CLAMP(ip[0]);
+ wp[stride] -= wp[0];
+ wp[stride] &= mask;
+ wp--; ip--)
+ n -= stride;
+ }
+ REPEAT(stride, wp[0] = (uint16) CLAMP(ip[0]); wp--; ip--)
+ }
+ }
+}
+
+static void
+horizontalDifference16(unsigned short *ip, int n, int stride,
+ unsigned short *wp, uint16 *From14)
+{
+ register int r1, g1, b1, a1, r2, g2, b2, a2, mask;
+
+/* assumption is unsigned pixel values */
+#undef CLAMP
+#define CLAMP(v) From14[(v) >> 2]
+
+ mask = CODE_MASK;
+ if (n >= stride) {
+ if (stride == 3) {
+ r2 = wp[0] = CLAMP(ip[0]); g2 = wp[1] = CLAMP(ip[1]);
+ b2 = wp[2] = CLAMP(ip[2]);
+ n -= 3;
+ while (n > 0) {
+ n -= 3;
+ wp += 3;
+ ip += 3;
+ r1 = CLAMP(ip[0]); wp[0] = (r1-r2) & mask; r2 = r1;
+ g1 = CLAMP(ip[1]); wp[1] = (g1-g2) & mask; g2 = g1;
+ b1 = CLAMP(ip[2]); wp[2] = (b1-b2) & mask; b2 = b1;
+ }
+ } else if (stride == 4) {
+ r2 = wp[0] = CLAMP(ip[0]); g2 = wp[1] = CLAMP(ip[1]);
+ b2 = wp[2] = CLAMP(ip[2]); a2 = wp[3] = CLAMP(ip[3]);
+ n -= 4;
+ while (n > 0) {
+ n -= 4;
+ wp += 4;
+ ip += 4;
+ r1 = CLAMP(ip[0]); wp[0] = (r1-r2) & mask; r2 = r1;
+ g1 = CLAMP(ip[1]); wp[1] = (g1-g2) & mask; g2 = g1;
+ b1 = CLAMP(ip[2]); wp[2] = (b1-b2) & mask; b2 = b1;
+ a1 = CLAMP(ip[3]); wp[3] = (a1-a2) & mask; a2 = a1;
+ }
+ } else {
+ ip += n - 1; /* point to last one */
+ wp += n - 1; /* point to last one */
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride, wp[0] = CLAMP(ip[0]);
+ wp[stride] -= wp[0];
+ wp[stride] &= mask;
+ wp--; ip--)
+ n -= stride;
+ }
+ REPEAT(stride, wp[0] = CLAMP(ip[0]); wp--; ip--)
+ }
+ }
+}
+
+
+static void
+horizontalDifference8(unsigned char *ip, int n, int stride,
+ unsigned short *wp, uint16 *From8)
+{
+ register int r1, g1, b1, a1, r2, g2, b2, a2, mask;
+
+#undef CLAMP
+#define CLAMP(v) (From8[(v)])
+
+ mask = CODE_MASK;
+ if (n >= stride) {
+ if (stride == 3) {
+ r2 = wp[0] = CLAMP(ip[0]); g2 = wp[1] = CLAMP(ip[1]);
+ b2 = wp[2] = CLAMP(ip[2]);
+ n -= 3;
+ while (n > 0) {
+ n -= 3;
+ r1 = CLAMP(ip[3]); wp[3] = (r1-r2) & mask; r2 = r1;
+ g1 = CLAMP(ip[4]); wp[4] = (g1-g2) & mask; g2 = g1;
+ b1 = CLAMP(ip[5]); wp[5] = (b1-b2) & mask; b2 = b1;
+ wp += 3;
+ ip += 3;
+ }
+ } else if (stride == 4) {
+ r2 = wp[0] = CLAMP(ip[0]); g2 = wp[1] = CLAMP(ip[1]);
+ b2 = wp[2] = CLAMP(ip[2]); a2 = wp[3] = CLAMP(ip[3]);
+ n -= 4;
+ while (n > 0) {
+ n -= 4;
+ r1 = CLAMP(ip[4]); wp[4] = (r1-r2) & mask; r2 = r1;
+ g1 = CLAMP(ip[5]); wp[5] = (g1-g2) & mask; g2 = g1;
+ b1 = CLAMP(ip[6]); wp[6] = (b1-b2) & mask; b2 = b1;
+ a1 = CLAMP(ip[7]); wp[7] = (a1-a2) & mask; a2 = a1;
+ wp += 4;
+ ip += 4;
+ }
+ } else {
+ wp += n + stride - 1; /* point to last one */
+ ip += n + stride - 1; /* point to last one */
+ n -= stride;
+ while (n > 0) {
+ REPEAT(stride, wp[0] = CLAMP(ip[0]);
+ wp[stride] -= wp[0];
+ wp[stride] &= mask;
+ wp--; ip--)
+ n -= stride;
+ }
+ REPEAT(stride, wp[0] = CLAMP(ip[0]); wp--; ip--)
+ }
+ }
+}
+
+/*
+ * Encode a chunk of pixels.
+ */
+static int
+PixarLogEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ static const char module[] = "PixarLogEncode";
+ TIFFDirectory *td = &tif->tif_dir;
+ PixarLogState *sp = EncoderState(tif);
+ tmsize_t i;
+ tmsize_t n;
+ int llen;
+ unsigned short * up;
+
+ (void) s;
+
+ switch (sp->user_datafmt) {
+ case PIXARLOGDATAFMT_FLOAT:
+ n = cc / sizeof(float); /* XXX float == 32 bits */
+ break;
+ case PIXARLOGDATAFMT_16BIT:
+ case PIXARLOGDATAFMT_12BITPICIO:
+ case PIXARLOGDATAFMT_11BITLOG:
+ n = cc / sizeof(uint16); /* XXX uint16 == 16 bits */
+ break;
+ case PIXARLOGDATAFMT_8BIT:
+ case PIXARLOGDATAFMT_8BITABGR:
+ n = cc;
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%d bit input not supported in PixarLog",
+ td->td_bitspersample);
+ return 0;
+ }
+
+ llen = sp->stride * td->td_imagewidth;
+
+ for (i = 0, up = sp->tbuf; i < n; i += llen, up += llen) {
+ switch (sp->user_datafmt) {
+ case PIXARLOGDATAFMT_FLOAT:
+ horizontalDifferenceF((float *)bp, llen,
+ sp->stride, up, sp->FromLT2);
+ bp += llen * sizeof(float);
+ break;
+ case PIXARLOGDATAFMT_16BIT:
+ horizontalDifference16((uint16 *)bp, llen,
+ sp->stride, up, sp->From14);
+ bp += llen * sizeof(uint16);
+ break;
+ case PIXARLOGDATAFMT_8BIT:
+ horizontalDifference8((unsigned char *)bp, llen,
+ sp->stride, up, sp->From8);
+ bp += llen * sizeof(unsigned char);
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%d bit input not supported in PixarLog",
+ td->td_bitspersample);
+ return 0;
+ }
+ }
+
+ sp->stream.next_in = (unsigned char *) sp->tbuf;
+ assert(sizeof(sp->stream.avail_in)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_in = (uInt) (n * sizeof(uint16));
+ if ((sp->stream.avail_in / sizeof(uint16)) != (uInt) n)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "ZLib cannot deal with buffers this size");
+ return (0);
+ }
+
+ do {
+ if (deflate(&sp->stream, Z_NO_FLUSH) != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Encoder error: %s",
+ sp->stream.msg);
+ return (0);
+ }
+ if (sp->stream.avail_out == 0) {
+ tif->tif_rawcc = tif->tif_rawdatasize;
+ TIFFFlushData1(tif);
+ sp->stream.next_out = tif->tif_rawdata;
+ sp->stream.avail_out = (uInt) tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in PixarLogPreEncode */
+ }
+ } while (sp->stream.avail_in > 0);
+ return (1);
+}
+
+/*
+ * Finish off an encoded strip by flushing the last
+ * string and tacking on an End Of Information code.
+ */
+
+static int
+PixarLogPostEncode(TIFF* tif)
+{
+ static const char module[] = "PixarLogPostEncode";
+ PixarLogState *sp = EncoderState(tif);
+ int state;
+
+ sp->stream.avail_in = 0;
+
+ do {
+ state = deflate(&sp->stream, Z_FINISH);
+ switch (state) {
+ case Z_STREAM_END:
+ case Z_OK:
+ if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) {
+ tif->tif_rawcc =
+ tif->tif_rawdatasize - sp->stream.avail_out;
+ TIFFFlushData1(tif);
+ sp->stream.next_out = tif->tif_rawdata;
+ sp->stream.avail_out = (uInt) tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in PixarLogPreEncode */
+ }
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
+ return (0);
+ }
+ } while (state != Z_STREAM_END);
+ return (1);
+}
+
+static void
+PixarLogClose(TIFF* tif)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+
+ /* In a really sneaky (and really incorrect, and untruthfull, and
+ * troublesome, and error-prone) maneuver that completely goes against
+ * the spirit of TIFF, and breaks TIFF, on close, we covertly
+ * modify both bitspersample and sampleformat in the directory to
+ * indicate 8-bit linear. This way, the decode "just works" even for
+ * readers that don't know about PixarLog, or how to set
+ * the PIXARLOGDATFMT pseudo-tag.
+ */
+ td->td_bitspersample = 8;
+ td->td_sampleformat = SAMPLEFORMAT_UINT;
+}
+
+static void
+PixarLogCleanup(TIFF* tif)
+{
+ PixarLogState* sp = (PixarLogState*) tif->tif_data;
+
+ assert(sp != 0);
+
+ (void)TIFFPredictorCleanup(tif);
+
+ tif->tif_tagmethods.vgetfield = sp->vgetparent;
+ tif->tif_tagmethods.vsetfield = sp->vsetparent;
+
+ if (sp->FromLT2) _TIFFfree(sp->FromLT2);
+ if (sp->From14) _TIFFfree(sp->From14);
+ if (sp->From8) _TIFFfree(sp->From8);
+ if (sp->ToLinearF) _TIFFfree(sp->ToLinearF);
+ if (sp->ToLinear16) _TIFFfree(sp->ToLinear16);
+ if (sp->ToLinear8) _TIFFfree(sp->ToLinear8);
+ if (sp->state&PLSTATE_INIT) {
+ if (tif->tif_mode == O_RDONLY)
+ inflateEnd(&sp->stream);
+ else
+ deflateEnd(&sp->stream);
+ }
+ if (sp->tbuf)
+ _TIFFfree(sp->tbuf);
+ _TIFFfree(sp);
+ tif->tif_data = NULL;
+
+ _TIFFSetDefaultCompressionState(tif);
+}
+
+static int
+PixarLogVSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ static const char module[] = "PixarLogVSetField";
+ PixarLogState *sp = (PixarLogState *)tif->tif_data;
+ int result;
+
+ switch (tag) {
+ case TIFFTAG_PIXARLOGQUALITY:
+ sp->quality = (int) va_arg(ap, int);
+ if (tif->tif_mode != O_RDONLY && (sp->state&PLSTATE_INIT)) {
+ if (deflateParams(&sp->stream,
+ sp->quality, Z_DEFAULT_STRATEGY) != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
+ return (0);
+ }
+ }
+ return (1);
+ case TIFFTAG_PIXARLOGDATAFMT:
+ sp->user_datafmt = (int) va_arg(ap, int);
+ /* Tweak the TIFF header so that the rest of libtiff knows what
+ * size of data will be passed between app and library, and
+ * assume that the app knows what it is doing and is not
+ * confused by these header manipulations...
+ */
+ switch (sp->user_datafmt) {
+ case PIXARLOGDATAFMT_8BIT:
+ case PIXARLOGDATAFMT_8BITABGR:
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
+ TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
+ break;
+ case PIXARLOGDATAFMT_11BITLOG:
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 16);
+ TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
+ break;
+ case PIXARLOGDATAFMT_12BITPICIO:
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 16);
+ TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT);
+ break;
+ case PIXARLOGDATAFMT_16BIT:
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 16);
+ TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
+ break;
+ case PIXARLOGDATAFMT_FLOAT:
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 32);
+ TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_IEEEFP);
+ break;
+ }
+ /*
+ * Must recalculate sizes should bits/sample change.
+ */
+ tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tmsize_t)(-1);
+ tif->tif_scanlinesize = TIFFScanlineSize(tif);
+ result = 1; /* NB: pseudo tag */
+ break;
+ default:
+ result = (*sp->vsetparent)(tif, tag, ap);
+ }
+ return (result);
+}
+
+static int
+PixarLogVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ PixarLogState *sp = (PixarLogState *)tif->tif_data;
+
+ switch (tag) {
+ case TIFFTAG_PIXARLOGQUALITY:
+ *va_arg(ap, int*) = sp->quality;
+ break;
+ case TIFFTAG_PIXARLOGDATAFMT:
+ *va_arg(ap, int*) = sp->user_datafmt;
+ break;
+ default:
+ return (*sp->vgetparent)(tif, tag, ap);
+ }
+ return (1);
+}
+
+static const TIFFField pixarlogFields[] = {
+ {TIFFTAG_PIXARLOGDATAFMT, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, FALSE, FALSE, "", NULL},
+ {TIFFTAG_PIXARLOGQUALITY, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, FALSE, FALSE, "", NULL}
+};
+
+int
+TIFFInitPixarLog(TIFF* tif, int scheme)
+{
+ static const char module[] = "TIFFInitPixarLog";
+
+ PixarLogState* sp;
+
+ assert(scheme == COMPRESSION_PIXARLOG);
+
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, pixarlogFields,
+ TIFFArrayCount(pixarlogFields))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Merging PixarLog codec-specific tags failed");
+ return 0;
+ }
+
+ /*
+ * Allocate state block so tag methods have storage to record values.
+ */
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof (PixarLogState));
+ if (tif->tif_data == NULL)
+ goto bad;
+ sp = (PixarLogState*) tif->tif_data;
+ _TIFFmemset(sp, 0, sizeof (*sp));
+ sp->stream.data_type = Z_BINARY;
+ sp->user_datafmt = PIXARLOGDATAFMT_UNKNOWN;
+
+ /*
+ * Install codec methods.
+ */
+ tif->tif_fixuptags = PixarLogFixupTags;
+ tif->tif_setupdecode = PixarLogSetupDecode;
+ tif->tif_predecode = PixarLogPreDecode;
+ tif->tif_decoderow = PixarLogDecode;
+ tif->tif_decodestrip = PixarLogDecode;
+ tif->tif_decodetile = PixarLogDecode;
+ tif->tif_setupencode = PixarLogSetupEncode;
+ tif->tif_preencode = PixarLogPreEncode;
+ tif->tif_postencode = PixarLogPostEncode;
+ tif->tif_encoderow = PixarLogEncode;
+ tif->tif_encodestrip = PixarLogEncode;
+ tif->tif_encodetile = PixarLogEncode;
+ tif->tif_close = PixarLogClose;
+ tif->tif_cleanup = PixarLogCleanup;
+
+ /* Override SetField so we can handle our private pseudo-tag */
+ sp->vgetparent = tif->tif_tagmethods.vgetfield;
+ tif->tif_tagmethods.vgetfield = PixarLogVGetField; /* hook for codec tags */
+ sp->vsetparent = tif->tif_tagmethods.vsetfield;
+ tif->tif_tagmethods.vsetfield = PixarLogVSetField; /* hook for codec tags */
+
+ /* Default values for codec-specific fields */
+ sp->quality = Z_DEFAULT_COMPRESSION; /* default comp. level */
+ sp->state = 0;
+
+ /* we don't wish to use the predictor,
+ * the default is none, which predictor value 1
+ */
+ (void) TIFFPredictorInit(tif);
+
+ /*
+ * build the companding tables
+ */
+ PixarLogMakeTables(sp);
+
+ return (1);
+bad:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for PixarLog state block");
+ return (0);
+}
+#endif /* PIXARLOG_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_predict.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_predict.c
new file mode 100644
index 0000000..190d016
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_predict.c
@@ -0,0 +1,813 @@
+/* $Id: tif_predict.c,v 1.32 2010-03-10 18:56:49 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Predictor Tag Support (used by multiple codecs).
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include "tif_predict.h"
+
+#define PredictorState(tif) ((TIFFPredictorState*) (tif)->tif_data)
+
+static void horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc);
+static void fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int PredictorDecodeRow(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
+static int PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
+static int PredictorEncodeRow(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s);
+static int PredictorEncodeTile(TIFF* tif, uint8* bp0, tmsize_t cc0, uint16 s);
+
+static int
+PredictorSetup(TIFF* tif)
+{
+ static const char module[] = "PredictorSetup";
+
+ TIFFPredictorState* sp = PredictorState(tif);
+ TIFFDirectory* td = &tif->tif_dir;
+
+ switch (sp->predictor) /* no differencing */
+ {
+ case PREDICTOR_NONE:
+ return 1;
+ case PREDICTOR_HORIZONTAL:
+ if (td->td_bitspersample != 8
+ && td->td_bitspersample != 16
+ && td->td_bitspersample != 32) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Horizontal differencing \"Predictor\" not supported with %d-bit samples",
+ td->td_bitspersample);
+ return 0;
+ }
+ break;
+ case PREDICTOR_FLOATINGPOINT:
+ if (td->td_sampleformat != SAMPLEFORMAT_IEEEFP) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Floating point \"Predictor\" not supported with %d data format",
+ td->td_sampleformat);
+ return 0;
+ }
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "\"Predictor\" value %d not supported",
+ sp->predictor);
+ return 0;
+ }
+ sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
+ td->td_samplesperpixel : 1);
+ /*
+ * Calculate the scanline/tile-width size in bytes.
+ */
+ if (isTiled(tif))
+ sp->rowsize = TIFFTileRowSize(tif);
+ else
+ sp->rowsize = TIFFScanlineSize(tif);
+ if (sp->rowsize == 0)
+ return 0;
+
+ return 1;
+}
+
+static int
+PredictorSetupDecode(TIFF* tif)
+{
+ TIFFPredictorState* sp = PredictorState(tif);
+ TIFFDirectory* td = &tif->tif_dir;
+
+ if (!(*sp->setupdecode)(tif) || !PredictorSetup(tif))
+ return 0;
+
+ if (sp->predictor == 2) {
+ switch (td->td_bitspersample) {
+ case 8: sp->decodepfunc = horAcc8; break;
+ case 16: sp->decodepfunc = horAcc16; break;
+ case 32: sp->decodepfunc = horAcc32; break;
+ }
+ /*
+ * Override default decoding method with one that does the
+ * predictor stuff.
+ */
+ if( tif->tif_decoderow != PredictorDecodeRow )
+ {
+ sp->decoderow = tif->tif_decoderow;
+ tif->tif_decoderow = PredictorDecodeRow;
+ sp->decodestrip = tif->tif_decodestrip;
+ tif->tif_decodestrip = PredictorDecodeTile;
+ sp->decodetile = tif->tif_decodetile;
+ tif->tif_decodetile = PredictorDecodeTile;
+ }
+
+ /*
+ * If the data is horizontally differenced 16-bit data that
+ * requires byte-swapping, then it must be byte swapped before
+ * the accumulation step. We do this with a special-purpose
+ * routine and override the normal post decoding logic that
+ * the library setup when the directory was read.
+ */
+ if (tif->tif_flags & TIFF_SWAB) {
+ if (sp->decodepfunc == horAcc16) {
+ sp->decodepfunc = swabHorAcc16;
+ tif->tif_postdecode = _TIFFNoPostDecode;
+ } else if (sp->decodepfunc == horAcc32) {
+ sp->decodepfunc = swabHorAcc32;
+ tif->tif_postdecode = _TIFFNoPostDecode;
+ }
+ }
+ }
+
+ else if (sp->predictor == 3) {
+ sp->decodepfunc = fpAcc;
+ /*
+ * Override default decoding method with one that does the
+ * predictor stuff.
+ */
+ if( tif->tif_decoderow != PredictorDecodeRow )
+ {
+ sp->decoderow = tif->tif_decoderow;
+ tif->tif_decoderow = PredictorDecodeRow;
+ sp->decodestrip = tif->tif_decodestrip;
+ tif->tif_decodestrip = PredictorDecodeTile;
+ sp->decodetile = tif->tif_decodetile;
+ tif->tif_decodetile = PredictorDecodeTile;
+ }
+ /*
+ * The data should not be swapped outside of the floating
+ * point predictor, the accumulation routine should return
+ * byres in the native order.
+ */
+ if (tif->tif_flags & TIFF_SWAB) {
+ tif->tif_postdecode = _TIFFNoPostDecode;
+ }
+ /*
+ * Allocate buffer to keep the decoded bytes before
+ * rearranging in the ight order
+ */
+ }
+
+ return 1;
+}
+
+static int
+PredictorSetupEncode(TIFF* tif)
+{
+ TIFFPredictorState* sp = PredictorState(tif);
+ TIFFDirectory* td = &tif->tif_dir;
+
+ if (!(*sp->setupencode)(tif) || !PredictorSetup(tif))
+ return 0;
+
+ if (sp->predictor == 2) {
+ switch (td->td_bitspersample) {
+ case 8: sp->encodepfunc = horDiff8; break;
+ case 16: sp->encodepfunc = horDiff16; break;
+ case 32: sp->encodepfunc = horDiff32; break;
+ }
+ /*
+ * Override default encoding method with one that does the
+ * predictor stuff.
+ */
+ if( tif->tif_encoderow != PredictorEncodeRow )
+ {
+ sp->encoderow = tif->tif_encoderow;
+ tif->tif_encoderow = PredictorEncodeRow;
+ sp->encodestrip = tif->tif_encodestrip;
+ tif->tif_encodestrip = PredictorEncodeTile;
+ sp->encodetile = tif->tif_encodetile;
+ tif->tif_encodetile = PredictorEncodeTile;
+ }
+ }
+
+ else if (sp->predictor == 3) {
+ sp->encodepfunc = fpDiff;
+ /*
+ * Override default encoding method with one that does the
+ * predictor stuff.
+ */
+ if( tif->tif_encoderow != PredictorEncodeRow )
+ {
+ sp->encoderow = tif->tif_encoderow;
+ tif->tif_encoderow = PredictorEncodeRow;
+ sp->encodestrip = tif->tif_encodestrip;
+ tif->tif_encodestrip = PredictorEncodeTile;
+ sp->encodetile = tif->tif_encodetile;
+ tif->tif_encodetile = PredictorEncodeTile;
+ }
+ }
+
+ return 1;
+}
+
+#define REPEAT4(n, op) \
+ switch (n) { \
+ default: { tmsize_t i; for (i = n-4; i > 0; i--) { op; } } \
+ case 4: op; \
+ case 3: op; \
+ case 2: op; \
+ case 1: op; \
+ case 0: ; \
+ }
+
+static void
+horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ /*
+ * compare v4.0.3 with v3.9.5,
+ * we find that horAcc8 uses while loop in the v4.0.3 and uses do while loop in the v3.9.5.
+ * times of do while loop are less than while loop, so we use v3.9.5 instead of v4.0.3.
+ */
+#if 0
+ tmsize_t stride = PredictorState(tif)->stride;
+
+ char* cp = (char*) cp0;
+ assert((cc%stride)==0);
+ if (cc > stride) {
+ /*
+ * Pipeline the most common cases.
+ */
+ if (stride == 3) {
+ unsigned int cr = cp[0];
+ unsigned int cg = cp[1];
+ unsigned int cb = cp[2];
+ cc -= 3;
+ cp += 3;
+ while (cc>0) {
+ cp[0] = (char) (cr += cp[0]);
+ cp[1] = (char) (cg += cp[1]);
+ cp[2] = (char) (cb += cp[2]);
+ cc -= 3;
+ cp += 3;
+ }
+ } else if (stride == 4) {
+ unsigned int cr = cp[0];
+ unsigned int cg = cp[1];
+ unsigned int cb = cp[2];
+ unsigned int ca = cp[3];
+ cc -= 4;
+ cp += 4;
+ while (cc>0) {
+ cp[0] = (char) (cr += cp[0]);
+ cp[1] = (char) (cg += cp[1]);
+ cp[2] = (char) (cb += cp[2]);
+ cp[3] = (char) (ca += cp[3]);
+ cc -= 4;
+ cp += 4;
+ }
+ } else {
+ cc -= stride;
+ do {
+ REPEAT4(stride, cp[stride] =
+ (char) (cp[stride] + *cp); cp++)
+ cc -= stride;
+ } while (cc>0);
+ }
+ }
+#else
+ tsize_t stride = PredictorState(tif)->stride;
+
+ char* cp = (char*) cp0;
+ if (cc > stride) {
+ cc -= stride;
+ /*
+ * Pipeline the most common cases.
+ */
+ if (stride == 3) {
+ unsigned int cr = cp[0];
+ unsigned int cg = cp[1];
+ unsigned int cb = cp[2];
+ do {
+ cc -= 3, cp += 3;
+ cp[0] = (char) (cr += cp[0]);
+ cp[1] = (char) (cg += cp[1]);
+ cp[2] = (char) (cb += cp[2]);
+ } while ((int32) cc > 0);
+ } else if (stride == 4) {
+ unsigned int cr = cp[0];
+ unsigned int cg = cp[1];
+ unsigned int cb = cp[2];
+ unsigned int ca = cp[3];
+ do {
+ cc -= 4, cp += 4;
+ cp[0] = (char) (cr += cp[0]);
+ cp[1] = (char) (cg += cp[1]);
+ cp[2] = (char) (cb += cp[2]);
+ cp[3] = (char) (ca += cp[3]);
+ } while ((int32) cc > 0);
+ } else {
+ do {
+ REPEAT4(stride, cp[stride] =
+ (char) (cp[stride] + *cp); cp++)
+ cc -= stride;
+ } while ((int32) cc > 0);
+ }
+ }
+#endif
+}
+
+static void
+swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ tmsize_t stride = PredictorState(tif)->stride;
+ uint16* wp = (uint16*) cp0;
+ tmsize_t wc = cc / 2;
+
+ assert((cc%(2*stride))==0);
+
+ if (wc > stride) {
+ TIFFSwabArrayOfShort(wp, wc);
+ wc -= stride;
+ do {
+ REPEAT4(stride, wp[stride] += wp[0]; wp++)
+ wc -= stride;
+ } while (wc > 0);
+ }
+}
+
+static void
+horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ tmsize_t stride = PredictorState(tif)->stride;
+ uint16* wp = (uint16*) cp0;
+ tmsize_t wc = cc / 2;
+
+ assert((cc%(2*stride))==0);
+
+ if (wc > stride) {
+ wc -= stride;
+ do {
+ REPEAT4(stride, wp[stride] += wp[0]; wp++)
+ wc -= stride;
+ } while (wc > 0);
+ }
+}
+
+static void
+swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ tmsize_t stride = PredictorState(tif)->stride;
+ uint32* wp = (uint32*) cp0;
+ tmsize_t wc = cc / 4;
+
+ assert((cc%(4*stride))==0);
+
+ if (wc > stride) {
+ TIFFSwabArrayOfLong(wp, wc);
+ wc -= stride;
+ do {
+ REPEAT4(stride, wp[stride] += wp[0]; wp++)
+ wc -= stride;
+ } while (wc > 0);
+ }
+}
+
+static void
+horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ tmsize_t stride = PredictorState(tif)->stride;
+ uint32* wp = (uint32*) cp0;
+ tmsize_t wc = cc / 4;
+
+ assert((cc%(4*stride))==0);
+
+ if (wc > stride) {
+ wc -= stride;
+ do {
+ REPEAT4(stride, wp[stride] += wp[0]; wp++)
+ wc -= stride;
+ } while (wc > 0);
+ }
+}
+
+/*
+ * Floating point predictor accumulation routine.
+ */
+static void
+fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ tmsize_t stride = PredictorState(tif)->stride;
+ uint32 bps = tif->tif_dir.td_bitspersample / 8;
+ tmsize_t wc = cc / bps;
+ tmsize_t count = cc;
+ uint8 *cp = (uint8 *) cp0;
+ uint8 *tmp = (uint8 *)_TIFFmalloc(cc);
+
+ assert((cc%(bps*stride))==0);
+
+ if (!tmp)
+ return;
+
+ while (count > stride) {
+ REPEAT4(stride, cp[stride] += cp[0]; cp++)
+ count -= stride;
+ }
+
+ _TIFFmemcpy(tmp, cp0, cc);
+ cp = (uint8 *) cp0;
+ for (count = 0; count < wc; count++) {
+ uint32 byte;
+ for (byte = 0; byte < bps; byte++) {
+ #if WORDS_BIGENDIAN
+ cp[bps * count + byte] = tmp[byte * wc + count];
+ #else
+ cp[bps * count + byte] =
+ tmp[(bps - byte - 1) * wc + count];
+ #endif
+ }
+ }
+ _TIFFfree(tmp);
+}
+
+/*
+ * Decode a scanline and apply the predictor routine.
+ */
+static int
+PredictorDecodeRow(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
+{
+ TIFFPredictorState *sp = PredictorState(tif);
+
+ assert(sp != NULL);
+ assert(sp->decoderow != NULL);
+ assert(sp->decodepfunc != NULL);
+
+ if ((*sp->decoderow)(tif, op0, occ0, s)) {
+ (*sp->decodepfunc)(tif, op0, occ0);
+ return 1;
+ } else
+ return 0;
+}
+
+/*
+ * Decode a tile/strip and apply the predictor routine.
+ * Note that horizontal differencing must be done on a
+ * row-by-row basis. The width of a "row" has already
+ * been calculated at pre-decode time according to the
+ * strip/tile dimensions.
+ */
+static int
+PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
+{
+ TIFFPredictorState *sp = PredictorState(tif);
+
+ assert(sp != NULL);
+ assert(sp->decodetile != NULL);
+
+ if ((*sp->decodetile)(tif, op0, occ0, s)) {
+ tmsize_t rowsize = sp->rowsize;
+ assert(rowsize > 0);
+ assert((occ0%rowsize)==0);
+ assert(sp->decodepfunc != NULL);
+ while (occ0 > 0) {
+ (*sp->decodepfunc)(tif, op0, rowsize);
+ occ0 -= rowsize;
+ op0 += rowsize;
+ }
+ return 1;
+ } else
+ return 0;
+}
+
+static void
+horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ TIFFPredictorState* sp = PredictorState(tif);
+ tmsize_t stride = sp->stride;
+ char* cp = (char*) cp0;
+
+ assert((cc%stride)==0);
+
+ if (cc > stride) {
+ cc -= stride;
+ /*
+ * Pipeline the most common cases.
+ */
+ if (stride == 3) {
+ int r1, g1, b1;
+ int r2 = cp[0];
+ int g2 = cp[1];
+ int b2 = cp[2];
+ do {
+ r1 = cp[3]; cp[3] = r1-r2; r2 = r1;
+ g1 = cp[4]; cp[4] = g1-g2; g2 = g1;
+ b1 = cp[5]; cp[5] = b1-b2; b2 = b1;
+ cp += 3;
+ } while ((cc -= 3) > 0);
+ } else if (stride == 4) {
+ int r1, g1, b1, a1;
+ int r2 = cp[0];
+ int g2 = cp[1];
+ int b2 = cp[2];
+ int a2 = cp[3];
+ do {
+ r1 = cp[4]; cp[4] = r1-r2; r2 = r1;
+ g1 = cp[5]; cp[5] = g1-g2; g2 = g1;
+ b1 = cp[6]; cp[6] = b1-b2; b2 = b1;
+ a1 = cp[7]; cp[7] = a1-a2; a2 = a1;
+ cp += 4;
+ } while ((cc -= 4) > 0);
+ } else {
+ cp += cc - 1;
+ do {
+ REPEAT4(stride, cp[stride] -= cp[0]; cp--)
+ } while ((cc -= stride) > 0);
+ }
+ }
+}
+
+static void
+horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ TIFFPredictorState* sp = PredictorState(tif);
+ tmsize_t stride = sp->stride;
+ int16 *wp = (int16*) cp0;
+ tmsize_t wc = cc/2;
+
+ assert((cc%(2*stride))==0);
+
+ if (wc > stride) {
+ wc -= stride;
+ wp += wc - 1;
+ do {
+ REPEAT4(stride, wp[stride] -= wp[0]; wp--)
+ wc -= stride;
+ } while (wc > 0);
+ }
+}
+
+static void
+horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ TIFFPredictorState* sp = PredictorState(tif);
+ tmsize_t stride = sp->stride;
+ int32 *wp = (int32*) cp0;
+ tmsize_t wc = cc/4;
+
+ assert((cc%(4*stride))==0);
+
+ if (wc > stride) {
+ wc -= stride;
+ wp += wc - 1;
+ do {
+ REPEAT4(stride, wp[stride] -= wp[0]; wp--)
+ wc -= stride;
+ } while (wc > 0);
+ }
+}
+
+/*
+ * Floating point predictor differencing routine.
+ */
+static void
+fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc)
+{
+ tmsize_t stride = PredictorState(tif)->stride;
+ uint32 bps = tif->tif_dir.td_bitspersample / 8;
+ tmsize_t wc = cc / bps;
+ tmsize_t count;
+ uint8 *cp = (uint8 *) cp0;
+ uint8 *tmp = (uint8 *)_TIFFmalloc(cc);
+
+ assert((cc%(bps*stride))==0);
+
+ if (!tmp)
+ return;
+
+ _TIFFmemcpy(tmp, cp0, cc);
+ for (count = 0; count < wc; count++) {
+ uint32 byte;
+ for (byte = 0; byte < bps; byte++) {
+ #if WORDS_BIGENDIAN
+ cp[byte * wc + count] = tmp[bps * count + byte];
+ #else
+ cp[(bps - byte - 1) * wc + count] =
+ tmp[bps * count + byte];
+ #endif
+ }
+ }
+ _TIFFfree(tmp);
+
+ cp = (uint8 *) cp0;
+ cp += cc - stride - 1;
+ for (count = cc; count > stride; count -= stride)
+ REPEAT4(stride, cp[stride] -= cp[0]; cp--)
+}
+
+static int
+PredictorEncodeRow(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ TIFFPredictorState *sp = PredictorState(tif);
+
+ assert(sp != NULL);
+ assert(sp->encodepfunc != NULL);
+ assert(sp->encoderow != NULL);
+
+ /* XXX horizontal differencing alters user's data XXX */
+ (*sp->encodepfunc)(tif, bp, cc);
+ return (*sp->encoderow)(tif, bp, cc, s);
+}
+
+static int
+PredictorEncodeTile(TIFF* tif, uint8* bp0, tmsize_t cc0, uint16 s)
+{
+ static const char module[] = "PredictorEncodeTile";
+ TIFFPredictorState *sp = PredictorState(tif);
+ uint8 *working_copy;
+ tmsize_t cc = cc0, rowsize;
+ unsigned char* bp;
+ int result_code;
+
+ assert(sp != NULL);
+ assert(sp->encodepfunc != NULL);
+ assert(sp->encodetile != NULL);
+
+ /*
+ * Do predictor manipulation in a working buffer to avoid altering
+ * the callers buffer. http://trac.osgeo.org/gdal/ticket/1965
+ */
+ working_copy = (uint8*) _TIFFmalloc(cc0);
+ if( working_copy == NULL )
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Out of memory allocating " TIFF_SSIZE_FORMAT " byte temp buffer.",
+ cc0 );
+ return 0;
+ }
+ memcpy( working_copy, bp0, cc0 );
+ bp = working_copy;
+
+ rowsize = sp->rowsize;
+ assert(rowsize > 0);
+ assert((cc0%rowsize)==0);
+ while (cc > 0) {
+ (*sp->encodepfunc)(tif, bp, rowsize);
+ cc -= rowsize;
+ bp += rowsize;
+ }
+ result_code = (*sp->encodetile)(tif, working_copy, cc0, s);
+
+ _TIFFfree( working_copy );
+
+ return result_code;
+}
+
+#define FIELD_PREDICTOR (FIELD_CODEC+0) /* XXX */
+
+static const TIFFField predictFields[] = {
+ { TIFFTAG_PREDICTOR, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UINT16, FIELD_PREDICTOR, FALSE, FALSE, "Predictor", NULL },
+};
+
+static int
+PredictorVSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ TIFFPredictorState *sp = PredictorState(tif);
+
+ assert(sp != NULL);
+ assert(sp->vsetparent != NULL);
+
+ switch (tag) {
+ case TIFFTAG_PREDICTOR:
+ sp->predictor = (uint16) va_arg(ap, uint16_vap);
+ TIFFSetFieldBit(tif, FIELD_PREDICTOR);
+ break;
+ default:
+ return (*sp->vsetparent)(tif, tag, ap);
+ }
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+ return 1;
+}
+
+static int
+PredictorVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ TIFFPredictorState *sp = PredictorState(tif);
+
+ assert(sp != NULL);
+ assert(sp->vgetparent != NULL);
+
+ switch (tag) {
+ case TIFFTAG_PREDICTOR:
+ *va_arg(ap, uint16*) = sp->predictor;
+ break;
+ default:
+ return (*sp->vgetparent)(tif, tag, ap);
+ }
+ return 1;
+}
+
+static void
+PredictorPrintDir(TIFF* tif, FILE* fd, long flags)
+{
+ TIFFPredictorState* sp = PredictorState(tif);
+
+ (void) flags;
+ if (TIFFFieldSet(tif,FIELD_PREDICTOR)) {
+ fprintf(fd, " Predictor: ");
+ switch (sp->predictor) {
+ case 1: fprintf(fd, "none "); break;
+ case 2: fprintf(fd, "horizontal differencing "); break;
+ case 3: fprintf(fd, "floating point predictor "); break;
+ }
+ fprintf(fd, "%u (0x%x)\n", sp->predictor, sp->predictor);
+ }
+ if (sp->printdir)
+ (*sp->printdir)(tif, fd, flags);
+}
+
+int
+TIFFPredictorInit(TIFF* tif)
+{
+ TIFFPredictorState* sp = PredictorState(tif);
+
+ assert(sp != 0);
+
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, predictFields,
+ TIFFArrayCount(predictFields))) {
+ TIFFErrorExt(tif->tif_clientdata, "TIFFPredictorInit",
+ "Merging Predictor codec-specific tags failed");
+ return 0;
+ }
+
+ /*
+ * Override parent get/set field methods.
+ */
+ sp->vgetparent = tif->tif_tagmethods.vgetfield;
+ tif->tif_tagmethods.vgetfield =
+ PredictorVGetField;/* hook for predictor tag */
+ sp->vsetparent = tif->tif_tagmethods.vsetfield;
+ tif->tif_tagmethods.vsetfield =
+ PredictorVSetField;/* hook for predictor tag */
+ sp->printdir = tif->tif_tagmethods.printdir;
+ tif->tif_tagmethods.printdir =
+ PredictorPrintDir; /* hook for predictor tag */
+
+ sp->setupdecode = tif->tif_setupdecode;
+ tif->tif_setupdecode = PredictorSetupDecode;
+ sp->setupencode = tif->tif_setupencode;
+ tif->tif_setupencode = PredictorSetupEncode;
+
+ sp->predictor = 1; /* default value */
+ sp->encodepfunc = NULL; /* no predictor routine */
+ sp->decodepfunc = NULL; /* no predictor routine */
+ return 1;
+}
+
+int
+TIFFPredictorCleanup(TIFF* tif)
+{
+ TIFFPredictorState* sp = PredictorState(tif);
+
+ assert(sp != 0);
+
+ tif->tif_tagmethods.vgetfield = sp->vgetparent;
+ tif->tif_tagmethods.vsetfield = sp->vsetparent;
+ tif->tif_tagmethods.printdir = sp->printdir;
+ tif->tif_setupdecode = sp->setupdecode;
+ tif->tif_setupencode = sp->setupencode;
+
+ return 1;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_predict.h b/core/src/fxcodec/fx_tiff/tiff_v403/tif_predict.h
new file mode 100644
index 0000000..dc7144c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_predict.h
@@ -0,0 +1,77 @@
+/* $Id: tif_predict.h,v 1.8 2010-03-10 18:56:49 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1995-1997 Sam Leffler
+ * Copyright (c) 1995-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFPREDICT_
+#define _TIFFPREDICT_
+/*
+ * ``Library-private'' Support for the Predictor Tag
+ */
+
+/*
+ * Codecs that want to support the Predictor tag must place
+ * this structure first in their private state block so that
+ * the predictor code can cast tif_data to find its state.
+ */
+typedef struct {
+ int predictor; /* predictor tag value */
+ tmsize_t stride; /* sample stride over data */
+ tmsize_t rowsize; /* tile/strip row size */
+
+ TIFFCodeMethod encoderow; /* parent codec encode/decode row */
+ TIFFCodeMethod encodestrip; /* parent codec encode/decode strip */
+ TIFFCodeMethod encodetile; /* parent codec encode/decode tile */
+ TIFFPostMethod encodepfunc; /* horizontal differencer */
+
+ TIFFCodeMethod decoderow; /* parent codec encode/decode row */
+ TIFFCodeMethod decodestrip; /* parent codec encode/decode strip */
+ TIFFCodeMethod decodetile; /* parent codec encode/decode tile */
+ TIFFPostMethod decodepfunc; /* horizontal accumulator */
+
+ TIFFVGetMethod vgetparent; /* super-class method */
+ TIFFVSetMethod vsetparent; /* super-class method */
+ TIFFPrintMethod printdir; /* super-class method */
+ TIFFBoolMethod setupdecode; /* super-class method */
+ TIFFBoolMethod setupencode; /* super-class method */
+} TIFFPredictorState;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+extern int TIFFPredictorInit(TIFF*);
+extern int TIFFPredictorCleanup(TIFF*);
+#if defined(__cplusplus)
+}
+#endif
+#endif /* _TIFFPREDICT_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_print.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_print.c
new file mode 100644
index 0000000..3ee43fc
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_print.c
@@ -0,0 +1,719 @@
+/* $Id: tif_print.c,v 1.60 2012-08-19 16:56:35 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Directory Printing Support
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include <stdio.h>
+
+#include <ctype.h>
+
+static void
+_TIFFprintAsciiBounded(FILE* fd, const char* cp, int max_chars);
+
+static const char *photoNames[] = {
+ "min-is-white", /* PHOTOMETRIC_MINISWHITE */
+ "min-is-black", /* PHOTOMETRIC_MINISBLACK */
+ "RGB color", /* PHOTOMETRIC_RGB */
+ "palette color (RGB from colormap)", /* PHOTOMETRIC_PALETTE */
+ "transparency mask", /* PHOTOMETRIC_MASK */
+ "separated", /* PHOTOMETRIC_SEPARATED */
+ "YCbCr", /* PHOTOMETRIC_YCBCR */
+ "7 (0x7)",
+ "CIE L*a*b*", /* PHOTOMETRIC_CIELAB */
+ "ICC L*a*b*", /* PHOTOMETRIC_ICCLAB */
+ "ITU L*a*b*" /* PHOTOMETRIC_ITULAB */
+};
+#define NPHOTONAMES (sizeof (photoNames) / sizeof (photoNames[0]))
+
+static const char *orientNames[] = {
+ "0 (0x0)",
+ "row 0 top, col 0 lhs", /* ORIENTATION_TOPLEFT */
+ "row 0 top, col 0 rhs", /* ORIENTATION_TOPRIGHT */
+ "row 0 bottom, col 0 rhs", /* ORIENTATION_BOTRIGHT */
+ "row 0 bottom, col 0 lhs", /* ORIENTATION_BOTLEFT */
+ "row 0 lhs, col 0 top", /* ORIENTATION_LEFTTOP */
+ "row 0 rhs, col 0 top", /* ORIENTATION_RIGHTTOP */
+ "row 0 rhs, col 0 bottom", /* ORIENTATION_RIGHTBOT */
+ "row 0 lhs, col 0 bottom", /* ORIENTATION_LEFTBOT */
+};
+#define NORIENTNAMES (sizeof (orientNames) / sizeof (orientNames[0]))
+
+static void
+_TIFFPrintField(FILE* fd, const TIFFField *fip,
+ uint32 value_count, void *raw_data)
+{
+ uint32 j;
+
+ fprintf(fd, " %s: ", fip->field_name);
+
+ for(j = 0; j < value_count; j++) {
+ if(fip->field_type == TIFF_BYTE)
+ fprintf(fd, "%u", ((uint8 *) raw_data)[j]);
+ else if(fip->field_type == TIFF_UNDEFINED)
+ fprintf(fd, "0x%x",
+ (unsigned int) ((unsigned char *) raw_data)[j]);
+ else if(fip->field_type == TIFF_SBYTE)
+ fprintf(fd, "%d", ((int8 *) raw_data)[j]);
+ else if(fip->field_type == TIFF_SHORT)
+ fprintf(fd, "%u", ((uint16 *) raw_data)[j]);
+ else if(fip->field_type == TIFF_SSHORT)
+ fprintf(fd, "%d", ((int16 *) raw_data)[j]);
+ else if(fip->field_type == TIFF_LONG)
+ fprintf(fd, "%lu",
+ (unsigned long)((uint32 *) raw_data)[j]);
+ else if(fip->field_type == TIFF_SLONG)
+ fprintf(fd, "%ld", (long)((int32 *) raw_data)[j]);
+ else if(fip->field_type == TIFF_IFD)
+ fprintf(fd, "0x%lx",
+ (unsigned long)((uint32 *) raw_data)[j]);
+ else if(fip->field_type == TIFF_RATIONAL
+ || fip->field_type == TIFF_SRATIONAL
+ || fip->field_type == TIFF_FLOAT)
+ fprintf(fd, "%f", ((float *) raw_data)[j]);
+ else if(fip->field_type == TIFF_LONG8)
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ fprintf(fd, "%I64u",
+ (unsigned __int64)((uint64 *) raw_data)[j]);
+#else
+ fprintf(fd, "%llu",
+ (unsigned long long)((uint64 *) raw_data)[j]);
+#endif
+ else if(fip->field_type == TIFF_SLONG8)
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ fprintf(fd, "%I64d", (__int64)((int64 *) raw_data)[j]);
+#else
+ fprintf(fd, "%lld", (long long)((int64 *) raw_data)[j]);
+#endif
+ else if(fip->field_type == TIFF_IFD8)
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ fprintf(fd, "0x%I64x",
+ (unsigned __int64)((uint64 *) raw_data)[j]);
+#else
+ fprintf(fd, "0x%llx",
+ (unsigned long long)((uint64 *) raw_data)[j]);
+#endif
+ else if(fip->field_type == TIFF_FLOAT)
+ fprintf(fd, "%f", ((float *)raw_data)[j]);
+ else if(fip->field_type == TIFF_DOUBLE)
+ fprintf(fd, "%f", ((double *) raw_data)[j]);
+ else if(fip->field_type == TIFF_ASCII) {
+ fprintf(fd, "%s", (char *) raw_data);
+ break;
+ }
+ else {
+ fprintf(fd, "<unsupported data type in TIFFPrint>");
+ break;
+ }
+
+ if(j < value_count - 1)
+ fprintf(fd, ",");
+ }
+
+ fprintf(fd, "\n");
+}
+
+static int
+_TIFFPrettyPrintField(TIFF* tif, const TIFFField *fip, FILE* fd, uint32 tag,
+ uint32 value_count, void *raw_data)
+{
+ (void) tif;
+
+ /* do not try to pretty print auto-defined fields */
+ if (strncmp(fip->field_name,"Tag ", 4) == 0) {
+ return 0;
+ }
+
+ switch (tag)
+ {
+ case TIFFTAG_INKSET:
+ if (value_count == 2 && fip->field_type == TIFF_SHORT) {
+ fprintf(fd, " Ink Set: ");
+ switch (*((uint16*)raw_data)) {
+ case INKSET_CMYK:
+ fprintf(fd, "CMYK\n");
+ break;
+ default:
+ fprintf(fd, "%u (0x%x)\n",
+ *((uint16*)raw_data),
+ *((uint16*)raw_data));
+ break;
+ }
+ return 1;
+ }
+ return 0;
+
+ case TIFFTAG_DOTRANGE:
+ if (value_count == 2 && fip->field_type == TIFF_SHORT) {
+ fprintf(fd, " Dot Range: %u-%u\n",
+ ((uint16*)raw_data)[0], ((uint16*)raw_data)[1]);
+ return 1;
+ }
+ return 0;
+
+ case TIFFTAG_WHITEPOINT:
+ if (value_count == 2 && fip->field_type == TIFF_RATIONAL) {
+ fprintf(fd, " White Point: %g-%g\n",
+ ((float *)raw_data)[0], ((float *)raw_data)[1]);
+ return 1;
+ }
+ return 0;
+
+ case TIFFTAG_XMLPACKET:
+ {
+ uint32 i;
+
+ fprintf(fd, " XMLPacket (XMP Metadata):\n" );
+ for(i = 0; i < value_count; i++)
+ fputc(((char *)raw_data)[i], fd);
+ fprintf( fd, "\n" );
+ return 1;
+ }
+ case TIFFTAG_RICHTIFFIPTC:
+ /*
+ * XXX: for some weird reason RichTIFFIPTC tag
+ * defined as array of LONG values.
+ */
+ fprintf(fd,
+ " RichTIFFIPTC Data: <present>, %lu bytes\n",
+ (unsigned long) value_count * 4);
+ return 1;
+
+ case TIFFTAG_PHOTOSHOP:
+ fprintf(fd, " Photoshop Data: <present>, %lu bytes\n",
+ (unsigned long) value_count);
+ return 1;
+
+ case TIFFTAG_ICCPROFILE:
+ fprintf(fd, " ICC Profile: <present>, %lu bytes\n",
+ (unsigned long) value_count);
+ return 1;
+
+ case TIFFTAG_STONITS:
+ if (value_count == 1 && fip->field_type == TIFF_DOUBLE) {
+ fprintf(fd,
+ " Sample to Nits conversion factor: %.4e\n",
+ *((double*)raw_data));
+ return 1;
+ }
+ return 0;
+ }
+
+ return 0;
+}
+
+/*
+ * Print the contents of the current directory
+ * to the specified stdio file stream.
+ */
+void
+TIFFPrintDirectory(TIFF* tif, FILE* fd, long flags)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+ char *sep;
+ uint16 i;
+ long l, n;
+
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ fprintf(fd, "TIFF Directory at offset 0x%I64x (%I64u)\n",
+ (unsigned __int64) tif->tif_diroff,
+ (unsigned __int64) tif->tif_diroff);
+#else
+ fprintf(fd, "TIFF Directory at offset 0x%llx (%llu)\n",
+ (unsigned long long) tif->tif_diroff,
+ (unsigned long long) tif->tif_diroff);
+#endif
+ if (TIFFFieldSet(tif,FIELD_SUBFILETYPE)) {
+ fprintf(fd, " Subfile Type:");
+ sep = " ";
+ if (td->td_subfiletype & FILETYPE_REDUCEDIMAGE) {
+ fprintf(fd, "%sreduced-resolution image", sep);
+ sep = "/";
+ }
+ if (td->td_subfiletype & FILETYPE_PAGE) {
+ fprintf(fd, "%smulti-page document", sep);
+ sep = "/";
+ }
+ if (td->td_subfiletype & FILETYPE_MASK)
+ fprintf(fd, "%stransparency mask", sep);
+ fprintf(fd, " (%lu = 0x%lx)\n",
+ (long) td->td_subfiletype, (long) td->td_subfiletype);
+ }
+ if (TIFFFieldSet(tif,FIELD_IMAGEDIMENSIONS)) {
+ fprintf(fd, " Image Width: %lu Image Length: %lu",
+ (unsigned long) td->td_imagewidth, (unsigned long) td->td_imagelength);
+ if (TIFFFieldSet(tif,FIELD_IMAGEDEPTH))
+ fprintf(fd, " Image Depth: %lu",
+ (unsigned long) td->td_imagedepth);
+ fprintf(fd, "\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_TILEDIMENSIONS)) {
+ fprintf(fd, " Tile Width: %lu Tile Length: %lu",
+ (unsigned long) td->td_tilewidth, (unsigned long) td->td_tilelength);
+ if (TIFFFieldSet(tif,FIELD_TILEDEPTH))
+ fprintf(fd, " Tile Depth: %lu",
+ (unsigned long) td->td_tiledepth);
+ fprintf(fd, "\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_RESOLUTION)) {
+ fprintf(fd, " Resolution: %g, %g",
+ td->td_xresolution, td->td_yresolution);
+ if (TIFFFieldSet(tif,FIELD_RESOLUTIONUNIT)) {
+ switch (td->td_resolutionunit) {
+ case RESUNIT_NONE:
+ fprintf(fd, " (unitless)");
+ break;
+ case RESUNIT_INCH:
+ fprintf(fd, " pixels/inch");
+ break;
+ case RESUNIT_CENTIMETER:
+ fprintf(fd, " pixels/cm");
+ break;
+ default:
+ fprintf(fd, " (unit %u = 0x%x)",
+ td->td_resolutionunit,
+ td->td_resolutionunit);
+ break;
+ }
+ }
+ fprintf(fd, "\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_POSITION))
+ fprintf(fd, " Position: %g, %g\n",
+ td->td_xposition, td->td_yposition);
+ if (TIFFFieldSet(tif,FIELD_BITSPERSAMPLE))
+ fprintf(fd, " Bits/Sample: %u\n", td->td_bitspersample);
+ if (TIFFFieldSet(tif,FIELD_SAMPLEFORMAT)) {
+ fprintf(fd, " Sample Format: ");
+ switch (td->td_sampleformat) {
+ case SAMPLEFORMAT_VOID:
+ fprintf(fd, "void\n");
+ break;
+ case SAMPLEFORMAT_INT:
+ fprintf(fd, "signed integer\n");
+ break;
+ case SAMPLEFORMAT_UINT:
+ fprintf(fd, "unsigned integer\n");
+ break;
+ case SAMPLEFORMAT_IEEEFP:
+ fprintf(fd, "IEEE floating point\n");
+ break;
+ case SAMPLEFORMAT_COMPLEXINT:
+ fprintf(fd, "complex signed integer\n");
+ break;
+ case SAMPLEFORMAT_COMPLEXIEEEFP:
+ fprintf(fd, "complex IEEE floating point\n");
+ break;
+ default:
+ fprintf(fd, "%u (0x%x)\n",
+ td->td_sampleformat, td->td_sampleformat);
+ break;
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_COMPRESSION)) {
+ const TIFFCodec* c = TIFFFindCODEC(td->td_compression);
+ fprintf(fd, " Compression Scheme: ");
+ if (c)
+ fprintf(fd, "%s\n", c->name);
+ else
+ fprintf(fd, "%u (0x%x)\n",
+ td->td_compression, td->td_compression);
+ }
+ if (TIFFFieldSet(tif,FIELD_PHOTOMETRIC)) {
+ fprintf(fd, " Photometric Interpretation: ");
+ if (td->td_photometric < NPHOTONAMES)
+ fprintf(fd, "%s\n", photoNames[td->td_photometric]);
+ else {
+ switch (td->td_photometric) {
+ case PHOTOMETRIC_LOGL:
+ fprintf(fd, "CIE Log2(L)\n");
+ break;
+ case PHOTOMETRIC_LOGLUV:
+ fprintf(fd, "CIE Log2(L) (u',v')\n");
+ break;
+ default:
+ fprintf(fd, "%u (0x%x)\n",
+ td->td_photometric, td->td_photometric);
+ break;
+ }
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_EXTRASAMPLES) && td->td_extrasamples) {
+ fprintf(fd, " Extra Samples: %u<", td->td_extrasamples);
+ sep = "";
+ for (i = 0; i < td->td_extrasamples; i++) {
+ switch (td->td_sampleinfo[i]) {
+ case EXTRASAMPLE_UNSPECIFIED:
+ fprintf(fd, "%sunspecified", sep);
+ break;
+ case EXTRASAMPLE_ASSOCALPHA:
+ fprintf(fd, "%sassoc-alpha", sep);
+ break;
+ case EXTRASAMPLE_UNASSALPHA:
+ fprintf(fd, "%sunassoc-alpha", sep);
+ break;
+ default:
+ fprintf(fd, "%s%u (0x%x)", sep,
+ td->td_sampleinfo[i], td->td_sampleinfo[i]);
+ break;
+ }
+ sep = ", ";
+ }
+ fprintf(fd, ">\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_INKNAMES)) {
+ char* cp;
+ fprintf(fd, " Ink Names: ");
+ i = td->td_samplesperpixel;
+ sep = "";
+ for (cp = td->td_inknames;
+ i > 0 && cp < td->td_inknames + td->td_inknameslen;
+ cp = strchr(cp,'\0')+1, i--) {
+ int max_chars =
+ (int)(td->td_inknameslen - (cp - td->td_inknames));
+ fputs(sep, fd);
+ _TIFFprintAsciiBounded(fd, cp, max_chars);
+ sep = ", ";
+ }
+ fputs("\n", fd);
+ }
+ if (TIFFFieldSet(tif,FIELD_THRESHHOLDING)) {
+ fprintf(fd, " Thresholding: ");
+ switch (td->td_threshholding) {
+ case THRESHHOLD_BILEVEL:
+ fprintf(fd, "bilevel art scan\n");
+ break;
+ case THRESHHOLD_HALFTONE:
+ fprintf(fd, "halftone or dithered scan\n");
+ break;
+ case THRESHHOLD_ERRORDIFFUSE:
+ fprintf(fd, "error diffused\n");
+ break;
+ default:
+ fprintf(fd, "%u (0x%x)\n",
+ td->td_threshholding, td->td_threshholding);
+ break;
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_FILLORDER)) {
+ fprintf(fd, " FillOrder: ");
+ switch (td->td_fillorder) {
+ case FILLORDER_MSB2LSB:
+ fprintf(fd, "msb-to-lsb\n");
+ break;
+ case FILLORDER_LSB2MSB:
+ fprintf(fd, "lsb-to-msb\n");
+ break;
+ default:
+ fprintf(fd, "%u (0x%x)\n",
+ td->td_fillorder, td->td_fillorder);
+ break;
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_YCBCRSUBSAMPLING))
+ {
+ fprintf(fd, " YCbCr Subsampling: %u, %u\n",
+ td->td_ycbcrsubsampling[0], td->td_ycbcrsubsampling[1] );
+ }
+ if (TIFFFieldSet(tif,FIELD_YCBCRPOSITIONING)) {
+ fprintf(fd, " YCbCr Positioning: ");
+ switch (td->td_ycbcrpositioning) {
+ case YCBCRPOSITION_CENTERED:
+ fprintf(fd, "centered\n");
+ break;
+ case YCBCRPOSITION_COSITED:
+ fprintf(fd, "cosited\n");
+ break;
+ default:
+ fprintf(fd, "%u (0x%x)\n",
+ td->td_ycbcrpositioning, td->td_ycbcrpositioning);
+ break;
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_HALFTONEHINTS))
+ fprintf(fd, " Halftone Hints: light %u dark %u\n",
+ td->td_halftonehints[0], td->td_halftonehints[1]);
+ if (TIFFFieldSet(tif,FIELD_ORIENTATION)) {
+ fprintf(fd, " Orientation: ");
+ if (td->td_orientation < NORIENTNAMES)
+ fprintf(fd, "%s\n", orientNames[td->td_orientation]);
+ else
+ fprintf(fd, "%u (0x%x)\n",
+ td->td_orientation, td->td_orientation);
+ }
+ if (TIFFFieldSet(tif,FIELD_SAMPLESPERPIXEL))
+ fprintf(fd, " Samples/Pixel: %u\n", td->td_samplesperpixel);
+ if (TIFFFieldSet(tif,FIELD_ROWSPERSTRIP)) {
+ fprintf(fd, " Rows/Strip: ");
+ if (td->td_rowsperstrip == (uint32) -1)
+ fprintf(fd, "(infinite)\n");
+ else
+ fprintf(fd, "%lu\n", (unsigned long) td->td_rowsperstrip);
+ }
+ if (TIFFFieldSet(tif,FIELD_MINSAMPLEVALUE))
+ fprintf(fd, " Min Sample Value: %u\n", td->td_minsamplevalue);
+ if (TIFFFieldSet(tif,FIELD_MAXSAMPLEVALUE))
+ fprintf(fd, " Max Sample Value: %u\n", td->td_maxsamplevalue);
+ if (TIFFFieldSet(tif,FIELD_SMINSAMPLEVALUE)) {
+ int count = (tif->tif_flags & TIFF_PERSAMPLE) ? td->td_samplesperpixel : 1;
+ fprintf(fd, " SMin Sample Value:");
+ for (i = 0; i < count; ++i)
+ fprintf(fd, " %g", td->td_sminsamplevalue[i]);
+ fprintf(fd, "\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_SMAXSAMPLEVALUE)) {
+ int count = (tif->tif_flags & TIFF_PERSAMPLE) ? td->td_samplesperpixel : 1;
+ fprintf(fd, " SMax Sample Value:");
+ for (i = 0; i < count; ++i)
+ fprintf(fd, " %g", td->td_smaxsamplevalue[i]);
+ fprintf(fd, "\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_PLANARCONFIG)) {
+ fprintf(fd, " Planar Configuration: ");
+ switch (td->td_planarconfig) {
+ case PLANARCONFIG_CONTIG:
+ fprintf(fd, "single image plane\n");
+ break;
+ case PLANARCONFIG_SEPARATE:
+ fprintf(fd, "separate image planes\n");
+ break;
+ default:
+ fprintf(fd, "%u (0x%x)\n",
+ td->td_planarconfig, td->td_planarconfig);
+ break;
+ }
+ }
+ if (TIFFFieldSet(tif,FIELD_PAGENUMBER))
+ fprintf(fd, " Page Number: %u-%u\n",
+ td->td_pagenumber[0], td->td_pagenumber[1]);
+ if (TIFFFieldSet(tif,FIELD_COLORMAP)) {
+ fprintf(fd, " Color Map: ");
+ if (flags & TIFFPRINT_COLORMAP) {
+ fprintf(fd, "\n");
+ n = 1L<<td->td_bitspersample;
+ for (l = 0; l < n; l++)
+ fprintf(fd, " %5lu: %5u %5u %5u\n",
+ l,
+ td->td_colormap[0][l],
+ td->td_colormap[1][l],
+ td->td_colormap[2][l]);
+ } else
+ fprintf(fd, "(present)\n");
+ }
+ if (TIFFFieldSet(tif,FIELD_REFBLACKWHITE)) {
+ fprintf(fd, " Reference Black/White:\n");
+ for (i = 0; i < 3; i++)
+ fprintf(fd, " %2d: %5g %5g\n", i,
+ td->td_refblackwhite[2*i+0],
+ td->td_refblackwhite[2*i+1]);
+ }
+ if (TIFFFieldSet(tif,FIELD_TRANSFERFUNCTION)) {
+ fprintf(fd, " Transfer Function: ");
+ if (flags & TIFFPRINT_CURVES) {
+ fprintf(fd, "\n");
+ n = 1L<<td->td_bitspersample;
+ for (l = 0; l < n; l++) {
+ fprintf(fd, " %2lu: %5u",
+ l, td->td_transferfunction[0][l]);
+ for (i = 1; i < td->td_samplesperpixel; i++)
+ fprintf(fd, " %5u",
+ td->td_transferfunction[i][l]);
+ fputc('\n', fd);
+ }
+ } else
+ fprintf(fd, "(present)\n");
+ }
+ if (TIFFFieldSet(tif, FIELD_SUBIFD) && (td->td_subifd)) {
+ fprintf(fd, " SubIFD Offsets:");
+ for (i = 0; i < td->td_nsubifd; i++)
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ fprintf(fd, " %5I64u",
+ (unsigned __int64) td->td_subifd[i]);
+#else
+ fprintf(fd, " %5llu",
+ (unsigned long long) td->td_subifd[i]);
+#endif
+ fputc('\n', fd);
+ }
+
+ /*
+ ** Custom tag support.
+ */
+ {
+ int i;
+ short count;
+
+ count = (short) TIFFGetTagListCount(tif);
+ for(i = 0; i < count; i++) {
+ uint32 tag = TIFFGetTagListEntry(tif, i);
+ const TIFFField *fip;
+ uint32 value_count;
+ int mem_alloc = 0;
+ void *raw_data;
+
+ fip = TIFFFieldWithTag(tif, tag);
+ if(fip == NULL)
+ continue;
+
+ if(fip->field_passcount) {
+ if (fip->field_readcount == TIFF_VARIABLE ) {
+ if(TIFFGetField(tif, tag, &value_count, &raw_data) != 1)
+ continue;
+ } else if (fip->field_readcount == TIFF_VARIABLE2 ) {
+ uint16 small_value_count;
+ if(TIFFGetField(tif, tag, &small_value_count, &raw_data) != 1)
+ continue;
+ value_count = small_value_count;
+ } else {
+ assert (fip->field_readcount == TIFF_VARIABLE
+ || fip->field_readcount == TIFF_VARIABLE2);
+ continue;
+ }
+ } else {
+ if (fip->field_readcount == TIFF_VARIABLE
+ || fip->field_readcount == TIFF_VARIABLE2)
+ value_count = 1;
+ else if (fip->field_readcount == TIFF_SPP)
+ value_count = td->td_samplesperpixel;
+ else
+ value_count = fip->field_readcount;
+ if (fip->field_tag == TIFFTAG_DOTRANGE
+ && strcmp(fip->field_name,"DotRange") == 0) {
+ /* TODO: This is an evil exception and should not have been
+ handled this way ... likely best if we move it into
+ the directory structure with an explicit field in
+ libtiff 4.1 and assign it a FIELD_ value */
+ static uint16 dotrange[2];
+ raw_data = dotrange;
+ TIFFGetField(tif, tag, dotrange+0, dotrange+1);
+ } else if (fip->field_type == TIFF_ASCII
+ || fip->field_readcount == TIFF_VARIABLE
+ || fip->field_readcount == TIFF_VARIABLE2
+ || fip->field_readcount == TIFF_SPP
+ || value_count > 1) {
+ if(TIFFGetField(tif, tag, &raw_data) != 1)
+ continue;
+ } else {
+ raw_data = _TIFFmalloc(
+ _TIFFDataSize(fip->field_type)
+ * value_count);
+ mem_alloc = 1;
+ if(TIFFGetField(tif, tag, raw_data) != 1) {
+ _TIFFfree(raw_data);
+ continue;
+ }
+ }
+ }
+
+ /*
+ * Catch the tags which needs to be specially handled
+ * and pretty print them. If tag not handled in
+ * _TIFFPrettyPrintField() fall down and print it as
+ * any other tag.
+ */
+ if (!_TIFFPrettyPrintField(tif, fip, fd, tag, value_count, raw_data))
+ _TIFFPrintField(fd, fip, value_count, raw_data);
+
+ if(mem_alloc)
+ _TIFFfree(raw_data);
+ }
+ }
+
+ if (tif->tif_tagmethods.printdir)
+ (*tif->tif_tagmethods.printdir)(tif, fd, flags);
+
+ _TIFFFillStriles( tif );
+
+ if ((flags & TIFFPRINT_STRIPS) &&
+ TIFFFieldSet(tif,FIELD_STRIPOFFSETS)) {
+ uint32 s;
+
+ fprintf(fd, " %lu %s:\n",
+ (long) td->td_nstrips,
+ isTiled(tif) ? "Tiles" : "Strips");
+ for (s = 0; s < td->td_nstrips; s++)
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ fprintf(fd, " %3lu: [%8I64u, %8I64u]\n",
+ (unsigned long) s,
+ (unsigned __int64) td->td_stripoffset[s],
+ (unsigned __int64) td->td_stripbytecount[s]);
+#else
+ fprintf(fd, " %3lu: [%8llu, %8llu]\n",
+ (unsigned long) s,
+ (unsigned long long) td->td_stripoffset[s],
+ (unsigned long long) td->td_stripbytecount[s]);
+#endif
+ }
+}
+
+void
+_TIFFprintAscii(FILE* fd, const char* cp)
+{
+ _TIFFprintAsciiBounded( fd, cp, (int)strlen(cp));
+}
+
+static void
+_TIFFprintAsciiBounded(FILE* fd, const char* cp, int max_chars)
+{
+ for (; max_chars > 0 && *cp != '\0'; cp++, max_chars--) {
+ const char* tp;
+
+ if (isprint((int)*cp)) {
+ fputc(*cp, fd);
+ continue;
+ }
+ for (tp = "\tt\bb\rr\nn\vv"; *tp; tp++)
+ if (*tp++ == *cp)
+ break;
+ if (*tp)
+ fprintf(fd, "\\%c", *tp);
+ else
+ fprintf(fd, "\\%03o", *cp & 0xff);
+ }
+}
+
+void
+_TIFFprintAsciiTag(FILE* fd, const char* name, const char* value)
+{
+ fprintf(fd, " %s: \"", name);
+ _TIFFprintAscii(fd, value);
+ fprintf(fd, "\"\n");
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_read.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_read.c
new file mode 100644
index 0000000..a25a5a6
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_read.c
@@ -0,0 +1,1116 @@
+/* $Id: tif_read.c,v 1.41 2012-07-06 19:22:58 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ * Scanline-oriented Read Support
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include <stdio.h>
+
+int TIFFFillStrip(TIFF* tif, uint32 strip);
+int TIFFFillTile(TIFF* tif, uint32 tile);
+static int TIFFStartStrip(TIFF* tif, uint32 strip);
+static int TIFFStartTile(TIFF* tif, uint32 tile);
+static int TIFFCheckRead(TIFF*, int);
+static tmsize_t
+TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size,const char* module);
+
+#define NOSTRIP ((uint32)(-1)) /* undefined state */
+#define NOTILE ((uint32)(-1)) /* undefined state */
+
+static int
+TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
+{
+ static const char module[] = "TIFFFillStripPartial";
+ register TIFFDirectory *td = &tif->tif_dir;
+ uint64 unused_data;
+ uint64 read_offset;
+ tmsize_t cc, to_read;
+ /* tmsize_t bytecountm; */
+
+ if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+ return 0;
+
+ /*
+ * Expand raw data buffer, if needed, to hold data
+ * strip coming from file (perhaps should set upper
+ * bound on the size of a buffer we'll use?).
+ */
+
+ /* bytecountm=(tmsize_t) td->td_stripbytecount[strip]; */
+ if (read_ahead*2 > tif->tif_rawdatasize) {
+ assert( restart );
+
+ tif->tif_curstrip = NOSTRIP;
+ if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Data buffer too small to hold part of strip %lu",
+ (unsigned long) strip);
+ return (0);
+ }
+ if (!TIFFReadBufferSetup(tif, 0, read_ahead*2))
+ return (0);
+ }
+
+ if( restart )
+ {
+ tif->tif_rawdataloaded = 0;
+ tif->tif_rawdataoff = 0;
+ }
+
+ /*
+ ** If we are reading more data, move any unused data to the
+ ** start of the buffer.
+ */
+ if( tif->tif_rawdataloaded > 0 )
+ unused_data = tif->tif_rawdataloaded - (tif->tif_rawcp - tif->tif_rawdata);
+ else
+ unused_data = 0;
+
+ if( unused_data > 0 )
+ {
+ assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
+ memmove( tif->tif_rawdata, tif->tif_rawcp, (size_t)unused_data );
+ }
+
+ /*
+ ** Seek to the point in the file where more data should be read.
+ */
+ read_offset = td->td_stripoffset[strip]
+ + tif->tif_rawdataoff + tif->tif_rawdataloaded;
+
+ if (!SeekOK(tif, read_offset)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Seek error at scanline %lu, strip %lu",
+ (unsigned long) tif->tif_row, (unsigned long) strip);
+ return 0;
+ }
+
+ /*
+ ** How much do we want to read?
+ */
+ to_read = (tmsize_t)(tif->tif_rawdatasize - unused_data);
+ if( (uint64) to_read > td->td_stripbytecount[strip]
+ - tif->tif_rawdataoff - tif->tif_rawdataloaded )
+ {
+ to_read = (tmsize_t)(td->td_stripbytecount[strip]
+ - tif->tif_rawdataoff - tif->tif_rawdataloaded);
+ }
+
+ assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
+ cc = TIFFReadFile(tif, tif->tif_rawdata + unused_data, to_read);
+
+ if (cc != to_read) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Read error at scanline %lu; got %I64u bytes, expected %I64u",
+ (unsigned long) tif->tif_row,
+ (unsigned __int64) cc,
+ (unsigned __int64) to_read);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Read error at scanline %lu; got %llu bytes, expected %llu",
+ (unsigned long) tif->tif_row,
+ (unsigned long long) cc,
+ (unsigned long long) to_read);
+#endif
+ return 0;
+ }
+
+ tif->tif_rawdataoff = (tmsize_t)(tif->tif_rawdataoff + tif->tif_rawdataloaded - unused_data) ;
+ tif->tif_rawdataloaded = (tmsize_t)unused_data + to_read;
+
+ tif->tif_rawcp = tif->tif_rawdata;
+
+ if (!isFillOrder(tif, td->td_fillorder) &&
+ (tif->tif_flags & TIFF_NOBITREV) == 0) {
+ assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
+ TIFFReverseBits(tif->tif_rawdata + unused_data, to_read );
+ }
+
+ /*
+ ** When starting a strip from the beginning we need to
+ ** restart the decoder.
+ */
+ if( restart )
+ return TIFFStartStrip(tif, strip);
+ else
+ return 1;
+}
+
+/*
+ * Seek to a random row+sample in a file.
+ *
+ * Only used by TIFFReadScanline, and is only used on
+ * strip organized files. We do some tricky stuff to try
+ * and avoid reading the whole compressed raw data for big
+ * strips.
+ */
+static int
+TIFFSeek(TIFF* tif, uint32 row, uint16 sample )
+{
+ register TIFFDirectory *td = &tif->tif_dir;
+ uint32 strip;
+ int whole_strip;
+ tmsize_t read_ahead = 0;
+
+ /*
+ ** Establish what strip we are working from.
+ */
+ if (row >= td->td_imagelength) { /* out of range */
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%lu: Row out of range, max %lu",
+ (unsigned long) row,
+ (unsigned long) td->td_imagelength);
+ return (0);
+ }
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+ if (sample >= td->td_samplesperpixel) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%lu: Sample out of range, max %lu",
+ (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
+ return (0);
+ }
+ strip = (uint32)sample*td->td_stripsperimage + row/td->td_rowsperstrip;
+ } else
+ strip = row / td->td_rowsperstrip;
+
+ /*
+ * Do we want to treat this strip as one whole chunk or
+ * read it a few lines at a time?
+ */
+#if defined(CHUNKY_STRIP_READ_SUPPORT)
+ if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+ return 0;
+ whole_strip = tif->tif_dir.td_stripbytecount[strip] < 10
+ || isMapped(tif);
+#else
+ whole_strip = 1;
+#endif
+
+ if( !whole_strip )
+ {
+ read_ahead = tif->tif_scanlinesize * 16 + 5000;
+ }
+
+ /*
+ * If we haven't loaded this strip, do so now, possibly
+ * only reading the first part.
+ */
+ if (strip != tif->tif_curstrip) { /* different strip, refill */
+
+ if( whole_strip )
+ {
+ if (!TIFFFillStrip(tif, strip))
+ return (0);
+ }
+ else
+ {
+ if( !TIFFFillStripPartial(tif,strip,read_ahead,1) )
+ return 0;
+ }
+ }
+
+ /*
+ ** If we already have some data loaded, do we need to read some more?
+ */
+ else if( !whole_strip )
+ {
+ if( ((tif->tif_rawdata + tif->tif_rawdataloaded) - tif->tif_rawcp) < read_ahead
+ && (uint64) tif->tif_rawdataoff+tif->tif_rawdataloaded < td->td_stripbytecount[strip] )
+ {
+ if( !TIFFFillStripPartial(tif,strip,read_ahead,0) )
+ return 0;
+ }
+ }
+
+ if (row < tif->tif_row) {
+ /*
+ * Moving backwards within the same strip: backup
+ * to the start and then decode forward (below).
+ *
+ * NB: If you're planning on lots of random access within a
+ * strip, it's better to just read and decode the entire
+ * strip, and then access the decoded data in a random fashion.
+ */
+
+ if( tif->tif_rawdataoff != 0 )
+ {
+ if( !TIFFFillStripPartial(tif,strip,read_ahead,1) )
+ return 0;
+ }
+ else
+ {
+ if (!TIFFStartStrip(tif, strip))
+ return (0);
+ }
+ }
+
+ if (row != tif->tif_row) {
+ /*
+ * Seek forward to the desired row.
+ */
+
+ /* TODO: Will this really work with partial buffers? */
+
+ if (!(*tif->tif_seek)(tif, row - tif->tif_row))
+ return (0);
+ tif->tif_row = row;
+ }
+
+ return (1);
+}
+
+int
+TIFFReadScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
+{
+ int e;
+
+ if (!TIFFCheckRead(tif, 0))
+ return (-1);
+ if( (e = TIFFSeek(tif, row, sample)) != 0) {
+ /*
+ * Decompress desired row into user buffer.
+ */
+ e = (*tif->tif_decoderow)
+ (tif, (uint8*) buf, tif->tif_scanlinesize, sample);
+
+ /* we are now poised at the beginning of the next row */
+ tif->tif_row = row + 1;
+
+ if (e)
+ (*tif->tif_postdecode)(tif, (uint8*) buf,
+ tif->tif_scanlinesize);
+ }
+ return (e > 0 ? 1 : -1);
+}
+
+/*
+ * Read a strip of data and decompress the specified
+ * amount into the user-supplied buffer.
+ */
+tmsize_t
+TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size)
+{
+ static const char module[] = "TIFFReadEncodedStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint32 rowsperstrip;
+ uint32 stripsperplane;
+ uint32 stripinplane;
+ uint16 plane, comp;
+ uint32 rows;
+ tmsize_t stripsize;
+ if (!TIFFCheckRead(tif,0))
+ return((tmsize_t)(-1));
+ if (strip>=td->td_nstrips)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "%lu: Strip out of range, max %lu",(unsigned long)strip,
+ (unsigned long)td->td_nstrips);
+ return((tmsize_t)(-1));
+ }
+ /*
+ * Calculate the strip size according to the number of
+ * rows in the strip (check for truncated last strip on any
+ * of the separations).
+ */
+ rowsperstrip=td->td_rowsperstrip;
+ if (rowsperstrip>td->td_imagelength)
+ rowsperstrip=td->td_imagelength;
+ stripsperplane=((td->td_imagelength+rowsperstrip-1)/rowsperstrip);
+ stripinplane=(strip%stripsperplane);
+ plane=(strip/stripsperplane);
+ rows=td->td_imagelength-stripinplane*rowsperstrip;
+ if (rows>rowsperstrip)
+ rows=rowsperstrip;
+ stripsize=TIFFVStripSize(tif,rows);
+ if (stripsize==0)
+ return((tmsize_t)(-1));
+ if ((size!=(tmsize_t)(-1))&&(size<stripsize))
+ stripsize=size;
+
+ /*
+ * discard those.
+ * keep code modified by Changjin Gao.
+ * Xiaochuan Liu 20100828.
+ */
+ /*if (!TIFFFillStrip(tif,strip))
+ return((tmsize_t)(-1));
+ if ((*tif->tif_decodestrip)(tif,buf,stripsize,plane)<=0)
+ return((tmsize_t)(-1));
+ (*tif->tif_postdecode)(tif,buf,stripsize);
+ return(stripsize);*/
+
+ /*
+ * Changjin Gao 20110726 fixed decode error issue.
+ * Test file: mantis #27308 020511-1158450.tiff.
+ */
+ comp = COMPRESSION_NONE;
+StripDecode:
+ if (TIFFFillStrip(tif, strip) && (*tif->tif_decodestrip)(tif, buf, stripsize, plane) > 0)
+ {
+ (*tif->tif_postdecode)(tif, buf, stripsize);
+ return (stripsize);
+ }
+ else
+ {
+ if (comp < 9)
+ {
+ TIFFSetField(tif, TIFFTAG_COMPRESSION, comp);
+ TIFFSetField(tif, TIFFTAG_FAXMODE,FAXMODE_CLASSIC);
+ comp++;
+ goto StripDecode;
+ }
+
+ return ((tsize_t) -1);
+ }
+}
+
+static tmsize_t
+TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size,
+ const char* module)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (!_TIFFFillStriles( tif ))
+ return ((tmsize_t)(-1));
+
+ assert((tif->tif_flags&TIFF_NOREADRAW)==0);
+ if (!isMapped(tif)) {
+ tmsize_t cc;
+
+ if (!SeekOK(tif, td->td_stripoffset[strip])) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Seek error at scanline %lu, strip %lu",
+ (unsigned long) tif->tif_row, (unsigned long) strip);
+ return ((tmsize_t)(-1));
+ }
+ cc = TIFFReadFile(tif, buf, size);
+ if (cc != size) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Read error at scanline %lu; got %I64u bytes, expected %I64u",
+ (unsigned long) tif->tif_row,
+ (unsigned __int64) cc,
+ (unsigned __int64) size);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Read error at scanline %lu; got %llu bytes, expected %llu",
+ (unsigned long) tif->tif_row,
+ (unsigned long long) cc,
+ (unsigned long long) size);
+#endif
+ return ((tmsize_t)(-1));
+ }
+ } else {
+ tmsize_t ma,mb;
+ tmsize_t n;
+ ma=(tmsize_t)td->td_stripoffset[strip];
+ mb=ma+size;
+ if (((uint64)ma!=td->td_stripoffset[strip])||(ma>tif->tif_size))
+ n=0;
+ else if ((mb<ma)||(mb<size)||(mb>tif->tif_size))
+ n=tif->tif_size-ma;
+ else
+ n=size;
+ if (n!=size) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Read error at scanline %lu, strip %lu; got %I64u bytes, expected %I64u",
+ (unsigned long) tif->tif_row,
+ (unsigned long) strip,
+ (unsigned __int64) n,
+ (unsigned __int64) size);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Read error at scanline %lu, strip %lu; got %llu bytes, expected %llu",
+ (unsigned long) tif->tif_row,
+ (unsigned long) strip,
+ (unsigned long long) n,
+ (unsigned long long) size);
+#endif
+ return ((tmsize_t)(-1));
+ }
+ _TIFFmemcpy(buf, tif->tif_base + ma,
+ size);
+ }
+ return (size);
+}
+
+/*
+ * Read a strip of data from the file.
+ */
+tmsize_t
+TIFFReadRawStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size)
+{
+ static const char module[] = "TIFFReadRawStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint64 bytecount;
+ tmsize_t bytecountm;
+
+ if (!TIFFCheckRead(tif, 0))
+ return ((tmsize_t)(-1));
+ if (strip >= td->td_nstrips) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%lu: Strip out of range, max %lu",
+ (unsigned long) strip,
+ (unsigned long) td->td_nstrips);
+ return ((tmsize_t)(-1));
+ }
+ if (tif->tif_flags&TIFF_NOREADRAW)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Compression scheme does not support access to raw uncompressed data");
+ return ((tmsize_t)(-1));
+ }
+ bytecount = td->td_stripbytecount[strip];
+ if (bytecount <= 0) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%I64u: Invalid strip byte count, strip %lu",
+ (unsigned __int64) bytecount,
+ (unsigned long) strip);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%llu: Invalid strip byte count, strip %lu",
+ (unsigned long long) bytecount,
+ (unsigned long) strip);
+#endif
+ return ((tmsize_t)(-1));
+ }
+ bytecountm = (tmsize_t)bytecount;
+ if ((uint64)bytecountm!=bytecount) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Integer overflow");
+ return ((tmsize_t)(-1));
+ }
+ if (size != (tmsize_t)(-1) && size < bytecountm)
+ bytecountm = size;
+ return (TIFFReadRawStrip1(tif, strip, buf, bytecountm, module));
+}
+
+/*
+ * Read the specified strip and setup for decoding. The data buffer is
+ * expanded, as necessary, to hold the strip's data.
+ */
+int
+TIFFFillStrip(TIFF* tif, uint32 strip)
+{
+ static const char module[] = "TIFFFillStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+ return 0;
+
+ if ((tif->tif_flags&TIFF_NOREADRAW)==0)
+ {
+ uint64 bytecount = td->td_stripbytecount[strip];
+ if (bytecount <= 0) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Invalid strip byte count %I64u, strip %lu",
+ (unsigned __int64) bytecount,
+ (unsigned long) strip);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Invalid strip byte count %llu, strip %lu",
+ (unsigned long long) bytecount,
+ (unsigned long) strip);
+#endif
+ return (0);
+ }
+ if (isMapped(tif) &&
+ (isFillOrder(tif, td->td_fillorder)
+ || (tif->tif_flags & TIFF_NOBITREV))) {
+ /*
+ * The image is mapped into memory and we either don't
+ * need to flip bits or the compression routine is
+ * going to handle this operation itself. In this
+ * case, avoid copying the raw data and instead just
+ * reference the data from the memory mapped file
+ * image. This assumes that the decompression
+ * routines do not modify the contents of the raw data
+ * buffer (if they try to, the application will get a
+ * fault since the file is mapped read-only).
+ */
+ if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
+ _TIFFfree(tif->tif_rawdata);
+ tif->tif_rawdata = NULL;
+ tif->tif_rawdatasize = 0;
+ }
+ tif->tif_flags &= ~TIFF_MYBUFFER;
+ /*
+ * We must check for overflow, potentially causing
+ * an OOB read. Instead of simple
+ *
+ * td->td_stripoffset[strip]+bytecount > tif->tif_size
+ *
+ * comparison (which can overflow) we do the following
+ * two comparisons:
+ */
+ if (bytecount > (uint64)tif->tif_size ||
+ td->td_stripoffset[strip] > (uint64)tif->tif_size - bytecount) {
+ /*
+ * This error message might seem strange, but
+ * it's what would happen if a read were done
+ * instead.
+ */
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+
+ "Read error on strip %lu; "
+ "got %I64u bytes, expected %I64u",
+ (unsigned long) strip,
+ (unsigned __int64) tif->tif_size - td->td_stripoffset[strip],
+ (unsigned __int64) bytecount);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+
+ "Read error on strip %lu; "
+ "got %llu bytes, expected %llu",
+ (unsigned long) strip,
+ (unsigned long long) tif->tif_size - td->td_stripoffset[strip],
+ (unsigned long long) bytecount);
+#endif
+ tif->tif_curstrip = NOSTRIP;
+ return (0);
+ }
+ tif->tif_rawdatasize = (tmsize_t)bytecount;
+ tif->tif_rawdata = tif->tif_base + (tmsize_t)td->td_stripoffset[strip];
+ tif->tif_rawdataoff = 0;
+ tif->tif_rawdataloaded = (tmsize_t) bytecount;
+
+ /*
+ * When we have tif_rawdata reference directly into the memory mapped file
+ * we need to be pretty careful about how we use the rawdata. It is not
+ * a general purpose working buffer as it normally otherwise is. So we
+ * keep track of this fact to avoid using it improperly.
+ */
+ tif->tif_flags |= TIFF_BUFFERMMAP;
+ } else {
+ /*
+ * Expand raw data buffer, if needed, to hold data
+ * strip coming from file (perhaps should set upper
+ * bound on the size of a buffer we'll use?).
+ */
+ tmsize_t bytecountm;
+ bytecountm=(tmsize_t)bytecount;
+ if ((uint64)bytecountm!=bytecount)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ return(0);
+ }
+ if (bytecountm > tif->tif_rawdatasize) {
+ tif->tif_curstrip = NOSTRIP;
+ if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Data buffer too small to hold strip %lu",
+ (unsigned long) strip);
+ return (0);
+ }
+ if (!TIFFReadBufferSetup(tif, 0, bytecountm))
+ return (0);
+ }
+ if (tif->tif_flags&TIFF_BUFFERMMAP) {
+ tif->tif_curstrip = NOSTRIP;
+ if (!TIFFReadBufferSetup(tif, 0, bytecountm))
+ return (0);
+ }
+ if (TIFFReadRawStrip1(tif, strip, tif->tif_rawdata,
+ bytecountm, module) != bytecountm)
+ return (0);
+
+ tif->tif_rawdataoff = 0;
+ tif->tif_rawdataloaded = bytecountm;
+
+ if (!isFillOrder(tif, td->td_fillorder) &&
+ (tif->tif_flags & TIFF_NOBITREV) == 0)
+ TIFFReverseBits(tif->tif_rawdata, bytecountm);
+ }
+ }
+ return (TIFFStartStrip(tif, strip));
+}
+
+/*
+ * Tile-oriented Read Support
+ * Contributed by Nancy Cam (Silicon Graphics).
+ */
+
+/*
+ * Read and decompress a tile of data. The
+ * tile is selected by the (x,y,z,s) coordinates.
+ */
+tmsize_t
+TIFFReadTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s)
+{
+ if (!TIFFCheckRead(tif, 1) || !TIFFCheckTile(tif, x, y, z, s))
+ return ((tmsize_t)(-1));
+ return (TIFFReadEncodedTile(tif,
+ TIFFComputeTile(tif, x, y, z, s), buf, (tmsize_t)(-1)));
+}
+
+/*
+ * Read a tile of data and decompress the specified
+ * amount into the user-supplied buffer.
+ */
+tmsize_t
+TIFFReadEncodedTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size)
+{
+ static const char module[] = "TIFFReadEncodedTile";
+ TIFFDirectory *td = &tif->tif_dir;
+ tmsize_t tilesize = tif->tif_tilesize;
+
+ if (!TIFFCheckRead(tif, 1))
+ return ((tmsize_t)(-1));
+ if (tile >= td->td_nstrips) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%lu: Tile out of range, max %lu",
+ (unsigned long) tile, (unsigned long) td->td_nstrips);
+ return ((tmsize_t)(-1));
+ }
+ if (size == (tmsize_t)(-1))
+ size = tilesize;
+ else if (size > tilesize)
+ size = tilesize;
+ if (TIFFFillTile(tif, tile) && (*tif->tif_decodetile)(tif,
+ (uint8*) buf, size, (uint16)(tile/td->td_stripsperimage))) {
+ (*tif->tif_postdecode)(tif, (uint8*) buf, size);
+ return (size);
+ } else
+ return ((tmsize_t)(-1));
+}
+
+static tmsize_t
+TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* module)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (!_TIFFFillStriles( tif ))
+ return ((tmsize_t)(-1));
+
+ assert((tif->tif_flags&TIFF_NOREADRAW)==0);
+ if (!isMapped(tif)) {
+ tmsize_t cc;
+
+ if (!SeekOK(tif, td->td_stripoffset[tile])) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Seek error at row %lu, col %lu, tile %lu",
+ (unsigned long) tif->tif_row,
+ (unsigned long) tif->tif_col,
+ (unsigned long) tile);
+ return ((tmsize_t)(-1));
+ }
+ cc = TIFFReadFile(tif, buf, size);
+ if (cc != size) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Read error at row %lu, col %lu; got %I64u bytes, expected %I64u",
+ (unsigned long) tif->tif_row,
+ (unsigned long) tif->tif_col,
+ (unsigned __int64) cc,
+ (unsigned __int64) size);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Read error at row %lu, col %lu; got %llu bytes, expected %llu",
+ (unsigned long) tif->tif_row,
+ (unsigned long) tif->tif_col,
+ (unsigned long long) cc,
+ (unsigned long long) size);
+#endif
+ return ((tmsize_t)(-1));
+ }
+ } else {
+ tmsize_t ma,mb;
+ tmsize_t n;
+ ma=(tmsize_t)td->td_stripoffset[tile];
+ mb=ma+size;
+ if (((uint64)ma!=td->td_stripoffset[tile])||(ma>tif->tif_size))
+ n=0;
+ else if ((mb<ma)||(mb<size)||(mb>tif->tif_size))
+ n=tif->tif_size-ma;
+ else
+ n=size;
+ if (n!=size) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+"Read error at row %lu, col %lu, tile %lu; got %I64u bytes, expected %I64u",
+ (unsigned long) tif->tif_row,
+ (unsigned long) tif->tif_col,
+ (unsigned long) tile,
+ (unsigned __int64) n,
+ (unsigned __int64) size);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+"Read error at row %lu, col %lu, tile %lu; got %llu bytes, expected %llu",
+ (unsigned long) tif->tif_row,
+ (unsigned long) tif->tif_col,
+ (unsigned long) tile,
+ (unsigned long long) n,
+ (unsigned long long) size);
+#endif
+ return ((tmsize_t)(-1));
+ }
+ _TIFFmemcpy(buf, tif->tif_base + ma, size);
+ }
+ return (size);
+}
+
+/*
+ * Read a tile of data from the file.
+ */
+tmsize_t
+TIFFReadRawTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size)
+{
+ static const char module[] = "TIFFReadRawTile";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint64 bytecount64;
+ tmsize_t bytecountm;
+
+ if (!TIFFCheckRead(tif, 1))
+ return ((tmsize_t)(-1));
+ if (tile >= td->td_nstrips) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%lu: Tile out of range, max %lu",
+ (unsigned long) tile, (unsigned long) td->td_nstrips);
+ return ((tmsize_t)(-1));
+ }
+ if (tif->tif_flags&TIFF_NOREADRAW)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Compression scheme does not support access to raw uncompressed data");
+ return ((tmsize_t)(-1));
+ }
+ bytecount64 = td->td_stripbytecount[tile];
+ if (size != (tmsize_t)(-1) && (uint64)size < bytecount64)
+ bytecount64 = (uint64)size;
+ bytecountm = (tmsize_t)bytecount64;
+ if ((uint64)bytecountm!=bytecount64)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ return ((tmsize_t)(-1));
+ }
+ return (TIFFReadRawTile1(tif, tile, buf, bytecountm, module));
+}
+
+/*
+ * Read the specified tile and setup for decoding. The data buffer is
+ * expanded, as necessary, to hold the tile's data.
+ */
+int
+TIFFFillTile(TIFF* tif, uint32 tile)
+{
+ static const char module[] = "TIFFFillTile";
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+ return 0;
+
+ if ((tif->tif_flags&TIFF_NOREADRAW)==0)
+ {
+ uint64 bytecount = td->td_stripbytecount[tile];
+ if (bytecount <= 0) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%I64u: Invalid tile byte count, tile %lu",
+ (unsigned __int64) bytecount,
+ (unsigned long) tile);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%llu: Invalid tile byte count, tile %lu",
+ (unsigned long long) bytecount,
+ (unsigned long) tile);
+#endif
+ return (0);
+ }
+ if (isMapped(tif) &&
+ (isFillOrder(tif, td->td_fillorder)
+ || (tif->tif_flags & TIFF_NOBITREV))) {
+ /*
+ * The image is mapped into memory and we either don't
+ * need to flip bits or the compression routine is
+ * going to handle this operation itself. In this
+ * case, avoid copying the raw data and instead just
+ * reference the data from the memory mapped file
+ * image. This assumes that the decompression
+ * routines do not modify the contents of the raw data
+ * buffer (if they try to, the application will get a
+ * fault since the file is mapped read-only).
+ */
+ if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
+ _TIFFfree(tif->tif_rawdata);
+ tif->tif_rawdata = NULL;
+ tif->tif_rawdatasize = 0;
+ }
+ tif->tif_flags &= ~TIFF_MYBUFFER;
+ /*
+ * We must check for overflow, potentially causing
+ * an OOB read. Instead of simple
+ *
+ * td->td_stripoffset[tile]+bytecount > tif->tif_size
+ *
+ * comparison (which can overflow) we do the following
+ * two comparisons:
+ */
+ if (bytecount > (uint64)tif->tif_size ||
+ td->td_stripoffset[tile] > (uint64)tif->tif_size - bytecount) {
+ tif->tif_curtile = NOTILE;
+ return (0);
+ }
+ tif->tif_rawdatasize = (tmsize_t)bytecount;
+ tif->tif_rawdata =
+ tif->tif_base + (tmsize_t)td->td_stripoffset[tile];
+ tif->tif_rawdataoff = 0;
+ tif->tif_rawdataloaded = (tmsize_t) bytecount;
+ tif->tif_flags |= TIFF_BUFFERMMAP;
+ } else {
+ /*
+ * Expand raw data buffer, if needed, to hold data
+ * tile coming from file (perhaps should set upper
+ * bound on the size of a buffer we'll use?).
+ */
+ tmsize_t bytecountm;
+ bytecountm=(tmsize_t)bytecount;
+ if ((uint64)bytecountm!=bytecount)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ return(0);
+ }
+ if (bytecountm > tif->tif_rawdatasize) {
+ tif->tif_curtile = NOTILE;
+ if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Data buffer too small to hold tile %lu",
+ (unsigned long) tile);
+ return (0);
+ }
+ if (!TIFFReadBufferSetup(tif, 0, bytecountm))
+ return (0);
+ }
+ if (tif->tif_flags&TIFF_BUFFERMMAP) {
+ tif->tif_curtile = NOTILE;
+ if (!TIFFReadBufferSetup(tif, 0, bytecountm))
+ return (0);
+ }
+
+ if (TIFFReadRawTile1(tif, tile, tif->tif_rawdata,
+ bytecountm, module) != bytecountm)
+ return (0);
+
+ tif->tif_rawdataoff = 0;
+ tif->tif_rawdataloaded = bytecountm;
+
+ if (!isFillOrder(tif, td->td_fillorder) &&
+ (tif->tif_flags & TIFF_NOBITREV) == 0)
+ TIFFReverseBits(tif->tif_rawdata,
+ tif->tif_rawdataloaded);
+ }
+ }
+ return (TIFFStartTile(tif, tile));
+}
+
+/*
+ * Setup the raw data buffer in preparation for
+ * reading a strip of raw data. If the buffer
+ * is specified as zero, then a buffer of appropriate
+ * size is allocated by the library. Otherwise,
+ * the client must guarantee that the buffer is
+ * large enough to hold any individual strip of
+ * raw data.
+ */
+int
+TIFFReadBufferSetup(TIFF* tif, void* bp, tmsize_t size)
+{
+ static const char module[] = "TIFFReadBufferSetup";
+
+ assert((tif->tif_flags&TIFF_NOREADRAW)==0);
+ tif->tif_flags &= ~TIFF_BUFFERMMAP;
+
+ if (tif->tif_rawdata) {
+ if (tif->tif_flags & TIFF_MYBUFFER)
+ _TIFFfree(tif->tif_rawdata);
+ tif->tif_rawdata = NULL;
+ tif->tif_rawdatasize = 0;
+ }
+ if (bp) {
+ tif->tif_rawdatasize = size;
+ tif->tif_rawdata = (uint8*) bp;
+ tif->tif_flags &= ~TIFF_MYBUFFER;
+ } else {
+ tif->tif_rawdatasize = (tmsize_t)TIFFroundup_64((uint64)size, 1024);
+ if (tif->tif_rawdatasize==0)
+ tif->tif_rawdatasize=(tmsize_t)(-1);
+ tif->tif_rawdata = (uint8*) _TIFFmalloc(tif->tif_rawdatasize);
+ tif->tif_flags |= TIFF_MYBUFFER;
+ }
+ if (tif->tif_rawdata == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for data buffer at scanline %lu",
+ (unsigned long) tif->tif_row);
+ tif->tif_rawdatasize = 0;
+ return (0);
+ }
+ return (1);
+}
+
+/*
+ * Set state to appear as if a
+ * strip has just been read in.
+ */
+static int
+TIFFStartStrip(TIFF* tif, uint32 strip)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+ return 0;
+
+ if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+ if (!(*tif->tif_setupdecode)(tif))
+ return (0);
+ tif->tif_flags |= TIFF_CODERSETUP;
+ }
+ tif->tif_curstrip = strip;
+ tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+ tif->tif_flags &= ~TIFF_BUF4WRITE;
+
+ if (tif->tif_flags&TIFF_NOREADRAW)
+ {
+ tif->tif_rawcp = NULL;
+ tif->tif_rawcc = 0;
+ }
+ else
+ {
+ tif->tif_rawcp = tif->tif_rawdata;
+ tif->tif_rawcc = (tmsize_t)td->td_stripbytecount[strip];
+ }
+ return ((*tif->tif_predecode)(tif,
+ (uint16)(strip / td->td_stripsperimage)));
+}
+
+/*
+ * Set state to appear as if a
+ * tile has just been read in.
+ */
+static int
+TIFFStartTile(TIFF* tif, uint32 tile)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+ return 0;
+
+ if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+ if (!(*tif->tif_setupdecode)(tif))
+ return (0);
+ tif->tif_flags |= TIFF_CODERSETUP;
+ }
+ tif->tif_curtile = tile;
+ tif->tif_row =
+ (tile % TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth)) *
+ td->td_tilelength;
+ tif->tif_col =
+ (tile % TIFFhowmany_32(td->td_imagelength, td->td_tilelength)) *
+ td->td_tilewidth;
+ tif->tif_flags &= ~TIFF_BUF4WRITE;
+ if (tif->tif_flags&TIFF_NOREADRAW)
+ {
+ tif->tif_rawcp = NULL;
+ tif->tif_rawcc = 0;
+ }
+ else
+ {
+ tif->tif_rawcp = tif->tif_rawdata;
+ tif->tif_rawcc = (tmsize_t)td->td_stripbytecount[tile];
+ }
+ return ((*tif->tif_predecode)(tif,
+ (uint16)(tile/td->td_stripsperimage)));
+}
+
+static int
+TIFFCheckRead(TIFF* tif, int tiles)
+{
+ if (tif->tif_mode == O_WRONLY) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "File not open for reading");
+ return (0);
+ }
+ if (tiles ^ isTiled(tif)) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name, tiles ?
+ "Can not read tiles from a stripped image" :
+ "Can not read scanlines from a tiled image");
+ return (0);
+ }
+ return (1);
+}
+
+void
+_TIFFNoPostDecode(TIFF* tif, uint8* buf, tmsize_t cc)
+{
+ (void) tif; (void) buf; (void) cc;
+}
+
+void
+_TIFFSwab16BitData(TIFF* tif, uint8* buf, tmsize_t cc)
+{
+ (void) tif;
+ assert((cc & 1) == 0);
+ TIFFSwabArrayOfShort((uint16*) buf, cc/2);
+}
+
+void
+_TIFFSwab24BitData(TIFF* tif, uint8* buf, tmsize_t cc)
+{
+ (void) tif;
+ assert((cc % 3) == 0);
+ TIFFSwabArrayOfTriples((uint8*) buf, cc/3);
+}
+
+void
+_TIFFSwab32BitData(TIFF* tif, uint8* buf, tmsize_t cc)
+{
+ (void) tif;
+ assert((cc & 3) == 0);
+ TIFFSwabArrayOfLong((uint32*) buf, cc/4);
+}
+
+void
+_TIFFSwab64BitData(TIFF* tif, uint8* buf, tmsize_t cc)
+{
+ (void) tif;
+ assert((cc & 7) == 0);
+ TIFFSwabArrayOfDouble((double*) buf, cc/8);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_strip.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_strip.c
new file mode 100644
index 0000000..047c598
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_strip.c
@@ -0,0 +1,386 @@
+/* $Id: tif_strip.c,v 1.35 2012-06-06 05:33:55 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1991-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Strip-organized Image Support Routines.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+/*
+ * Compute which strip a (row,sample) value is in.
+ */
+uint32
+TIFFComputeStrip(TIFF* tif, uint32 row, uint16 sample)
+{
+ static const char module[] = "TIFFComputeStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint32 strip;
+
+ strip = row / td->td_rowsperstrip;
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+ if (sample >= td->td_samplesperpixel) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%lu: Sample out of range, max %lu",
+ (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
+ return (0);
+ }
+ strip += (uint32)sample*td->td_stripsperimage;
+ }
+ return (strip);
+}
+
+/*
+ * Compute how many strips are in an image.
+ */
+uint32
+TIFFNumberOfStrips(TIFF* tif)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+ uint32 nstrips;
+
+ nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
+ TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+ nstrips = _TIFFMultiply32(tif, nstrips, (uint32)td->td_samplesperpixel,
+ "TIFFNumberOfStrips");
+ return (nstrips);
+}
+
+/*
+ * Compute the # bytes in a variable height, row-aligned strip.
+ */
+uint64
+TIFFVStripSize64(TIFF* tif, uint32 nrows)
+{
+ static const char module[] = "TIFFVStripSize64";
+ TIFFDirectory *td = &tif->tif_dir;
+ if (nrows==(uint32)(-1))
+ nrows=td->td_imagelength;
+ if ((td->td_planarconfig==PLANARCONFIG_CONTIG)&&
+ (td->td_photometric == PHOTOMETRIC_YCBCR)&&
+ (!isUpSampled(tif)))
+ {
+ /*
+ * Packed YCbCr data contain one Cb+Cr for every
+ * HorizontalSampling*VerticalSampling Y values.
+ * Must also roundup width and height when calculating
+ * since images that are not a multiple of the
+ * horizontal/vertical subsampling area include
+ * YCbCr data for the extended image.
+ */
+ uint16 ycbcrsubsampling[2];
+ uint16 samplingblock_samples;
+ uint32 samplingblocks_hor;
+ uint32 samplingblocks_ver;
+ uint64 samplingrow_samples;
+ uint64 samplingrow_size;
+ if(td->td_samplesperpixel!=3)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid td_samplesperpixel value");
+ return 0;
+ }
+ TIFFGetFieldDefaulted(tif,TIFFTAG_YCBCRSUBSAMPLING,ycbcrsubsampling+0,
+ ycbcrsubsampling+1);
+ if ((ycbcrsubsampling[0] != 1 && ycbcrsubsampling[0] != 2 && ycbcrsubsampling[0] != 4)
+ ||(ycbcrsubsampling[1] != 1 && ycbcrsubsampling[1] != 2 && ycbcrsubsampling[1] != 4))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid YCbCr subsampling (%dx%d)",
+ ycbcrsubsampling[0],
+ ycbcrsubsampling[1] );
+ return 0;
+ }
+ samplingblock_samples=ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
+ samplingblocks_hor=TIFFhowmany_32(td->td_imagewidth,ycbcrsubsampling[0]);
+ samplingblocks_ver=TIFFhowmany_32(nrows,ycbcrsubsampling[1]);
+ samplingrow_samples=_TIFFMultiply64(tif,samplingblocks_hor,samplingblock_samples,module);
+ samplingrow_size=TIFFhowmany8_64(_TIFFMultiply64(tif,samplingrow_samples,td->td_bitspersample,module));
+ return(_TIFFMultiply64(tif,samplingrow_size,samplingblocks_ver,module));
+ }
+ else
+ return(_TIFFMultiply64(tif,nrows,TIFFScanlineSize64(tif),module));
+}
+tmsize_t
+TIFFVStripSize(TIFF* tif, uint32 nrows)
+{
+ static const char module[] = "TIFFVStripSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFVStripSize64(tif,nrows);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
+}
+
+/*
+ * Compute the # bytes in a raw strip.
+ */
+uint64
+TIFFRawStripSize64(TIFF* tif, uint32 strip)
+{
+ static const char module[] = "TIFFRawStripSize64";
+ TIFFDirectory* td = &tif->tif_dir;
+ uint64 bytecount = td->td_stripbytecount[strip];
+
+ if (bytecount == 0)
+ {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%I64u: Invalid strip byte count, strip %lu",
+ (unsigned __int64) bytecount,
+ (unsigned long) strip);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%llu: Invalid strip byte count, strip %lu",
+ (unsigned long long) bytecount,
+ (unsigned long) strip);
+#endif
+ bytecount = (uint64) -1;
+ }
+
+ return bytecount;
+}
+tmsize_t
+TIFFRawStripSize(TIFF* tif, uint32 strip)
+{
+ static const char module[] = "TIFFRawStripSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFRawStripSize64(tif,strip);
+ if (m==(uint64)(-1))
+ n=(tmsize_t)(-1);
+ else
+ {
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ }
+ return(n);
+}
+
+/*
+ * Compute the # bytes in a (row-aligned) strip.
+ *
+ * Note that if RowsPerStrip is larger than the
+ * recorded ImageLength, then the strip size is
+ * truncated to reflect the actual space required
+ * to hold the strip.
+ */
+uint64
+TIFFStripSize64(TIFF* tif)
+{
+ TIFFDirectory* td = &tif->tif_dir;
+ uint32 rps = td->td_rowsperstrip;
+ if (rps > td->td_imagelength)
+ rps = td->td_imagelength;
+ return (TIFFVStripSize64(tif, rps));
+}
+tmsize_t
+TIFFStripSize(TIFF* tif)
+{
+ static const char module[] = "TIFFStripSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFStripSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
+}
+
+/*
+ * Compute a default strip size based on the image
+ * characteristics and a requested value. If the
+ * request is <1 then we choose a strip size according
+ * to certain heuristics.
+ */
+uint32
+TIFFDefaultStripSize(TIFF* tif, uint32 request)
+{
+ return (*tif->tif_defstripsize)(tif, request);
+}
+
+uint32
+_TIFFDefaultStripSize(TIFF* tif, uint32 s)
+{
+ if ((int32) s < 1) {
+ /*
+ * If RowsPerStrip is unspecified, try to break the
+ * image up into strips that are approximately
+ * STRIP_SIZE_DEFAULT bytes long.
+ */
+ uint64 scanlinesize;
+ uint64 rows;
+ scanlinesize=TIFFScanlineSize64(tif);
+ if (scanlinesize==0)
+ scanlinesize=1;
+ rows=(uint64)STRIP_SIZE_DEFAULT/scanlinesize;
+ if (rows==0)
+ rows=1;
+ else if (rows>0xFFFFFFFF)
+ rows=0xFFFFFFFF;
+ s=(uint32)rows;
+ }
+ return (s);
+}
+
+/*
+ * Return the number of bytes to read/write in a call to
+ * one of the scanline-oriented i/o routines. Note that
+ * this number may be 1/samples-per-pixel if data is
+ * stored as separate planes.
+ * The ScanlineSize in case of YCbCrSubsampling is defined as the
+ * strip size divided by the strip height, i.e. the size of a pack of vertical
+ * subsampling lines divided by vertical subsampling. It should thus make
+ * sense when multiplied by a multiple of vertical subsampling.
+ */
+uint64
+TIFFScanlineSize64(TIFF* tif)
+{
+ static const char module[] = "TIFFScanlineSize64";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint64 scanline_size;
+ if (td->td_planarconfig==PLANARCONFIG_CONTIG)
+ {
+ if ((td->td_photometric==PHOTOMETRIC_YCBCR)&&
+ (td->td_samplesperpixel==3)&&
+ (!isUpSampled(tif)))
+ {
+ uint16 ycbcrsubsampling[2];
+ uint16 samplingblock_samples;
+ uint32 samplingblocks_hor;
+ uint64 samplingrow_samples;
+ uint64 samplingrow_size;
+ if(td->td_samplesperpixel!=3)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid td_samplesperpixel value");
+ return 0;
+ }
+ TIFFGetFieldDefaulted(tif,TIFFTAG_YCBCRSUBSAMPLING,
+ ycbcrsubsampling+0,
+ ycbcrsubsampling+1);
+ if (((ycbcrsubsampling[0]!=1)&&(ycbcrsubsampling[0]!=2)&&(ycbcrsubsampling[0]!=4)) ||
+ ((ycbcrsubsampling[1]!=1)&&(ycbcrsubsampling[1]!=2)&&(ycbcrsubsampling[1]!=4)))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid YCbCr subsampling");
+ return 0;
+ }
+ samplingblock_samples = ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
+ samplingblocks_hor = TIFFhowmany_32(td->td_imagewidth,ycbcrsubsampling[0]);
+ samplingrow_samples = _TIFFMultiply64(tif,samplingblocks_hor,samplingblock_samples,module);
+ samplingrow_size = TIFFhowmany_64(_TIFFMultiply64(tif,samplingrow_samples,td->td_bitspersample,module),8);
+ scanline_size = (samplingrow_size/ycbcrsubsampling[1]);
+ }
+ else
+ {
+ uint64 scanline_samples;
+ scanline_samples=_TIFFMultiply64(tif,td->td_imagewidth,td->td_samplesperpixel,module);
+ scanline_size=TIFFhowmany_64(_TIFFMultiply64(tif,scanline_samples,td->td_bitspersample,module),8);
+ }
+ }
+ else
+ scanline_size=TIFFhowmany_64(_TIFFMultiply64(tif,td->td_imagewidth,td->td_bitspersample,module),8);
+ return(scanline_size);
+}
+tmsize_t
+TIFFScanlineSize(TIFF* tif)
+{
+ static const char module[] = "TIFFScanlineSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFScanlineSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer arithmetic overflow");
+ n=0;
+ }
+ return(n);
+}
+
+/*
+ * Return the number of bytes required to store a complete
+ * decoded and packed raster scanline (as opposed to the
+ * I/O size returned by TIFFScanlineSize which may be less
+ * if data is store as separate planes).
+ */
+uint64
+TIFFRasterScanlineSize64(TIFF* tif)
+{
+ static const char module[] = "TIFFRasterScanlineSize64";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint64 scanline;
+
+ scanline = _TIFFMultiply64(tif, td->td_bitspersample, td->td_imagewidth, module);
+ if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+ scanline = _TIFFMultiply64(tif, scanline, td->td_samplesperpixel, module);
+ return (TIFFhowmany8_64(scanline));
+ } else
+ return (_TIFFMultiply64(tif, TIFFhowmany8_64(scanline),
+ td->td_samplesperpixel, module));
+}
+tmsize_t
+TIFFRasterScanlineSize(TIFF* tif)
+{
+ static const char module[] = "TIFFRasterScanlineSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFRasterScanlineSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer arithmetic overflow");
+ n=0;
+ }
+ return(n);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_swab.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_swab.c
new file mode 100644
index 0000000..a60814b
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_swab.c
@@ -0,0 +1,313 @@
+/* $Id: tif_swab.c,v 1.13 2010-03-10 18:56:49 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library Bit & Byte Swapping Support.
+ *
+ * XXX We assume short = 16-bits and long = 32-bits XXX
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+#ifndef TIFFSwabShort
+void
+TIFFSwabShort(uint16* wp)
+{
+ register unsigned char* cp = (unsigned char*) wp;
+ unsigned char t;
+ assert(sizeof(uint16)==2);
+ t = cp[1]; cp[1] = cp[0]; cp[0] = t;
+}
+#endif
+
+#ifndef TIFFSwabLong
+void
+TIFFSwabLong(uint32* lp)
+{
+ register unsigned char* cp = (unsigned char*) lp;
+ unsigned char t;
+ assert(sizeof(uint32)==4);
+ t = cp[3]; cp[3] = cp[0]; cp[0] = t;
+ t = cp[2]; cp[2] = cp[1]; cp[1] = t;
+}
+#endif
+
+#ifndef TIFFSwabLong8
+void
+TIFFSwabLong8(uint64* lp)
+{
+ register unsigned char* cp = (unsigned char*) lp;
+ unsigned char t;
+ assert(sizeof(uint64)==8);
+ t = cp[7]; cp[7] = cp[0]; cp[0] = t;
+ t = cp[6]; cp[6] = cp[1]; cp[1] = t;
+ t = cp[5]; cp[5] = cp[2]; cp[2] = t;
+ t = cp[4]; cp[4] = cp[3]; cp[3] = t;
+}
+#endif
+
+#ifndef TIFFSwabArrayOfShort
+void
+TIFFSwabArrayOfShort(register uint16* wp, tmsize_t n)
+{
+ register unsigned char* cp;
+ register unsigned char t;
+ assert(sizeof(uint16)==2);
+ /* XXX unroll loop some */
+ while (n-- > 0) {
+ cp = (unsigned char*) wp;
+ t = cp[1]; cp[1] = cp[0]; cp[0] = t;
+ wp++;
+ }
+}
+#endif
+
+#ifndef TIFFSwabArrayOfTriples
+void
+TIFFSwabArrayOfTriples(register uint8* tp, tmsize_t n)
+{
+ unsigned char* cp;
+ unsigned char t;
+
+ /* XXX unroll loop some */
+ while (n-- > 0) {
+ cp = (unsigned char*) tp;
+ t = cp[2]; cp[2] = cp[0]; cp[0] = t;
+ tp += 3;
+ }
+}
+#endif
+
+#ifndef TIFFSwabArrayOfLong
+void
+TIFFSwabArrayOfLong(register uint32* lp, tmsize_t n)
+{
+ register unsigned char *cp;
+ register unsigned char t;
+ assert(sizeof(uint32)==4);
+ /* XXX unroll loop some */
+ while (n-- > 0) {
+ cp = (unsigned char *)lp;
+ t = cp[3]; cp[3] = cp[0]; cp[0] = t;
+ t = cp[2]; cp[2] = cp[1]; cp[1] = t;
+ lp++;
+ }
+}
+#endif
+
+#ifndef TIFFSwabArrayOfLong8
+void
+TIFFSwabArrayOfLong8(register uint64* lp, tmsize_t n)
+{
+ register unsigned char *cp;
+ register unsigned char t;
+ assert(sizeof(uint64)==8);
+ /* XXX unroll loop some */
+ while (n-- > 0) {
+ cp = (unsigned char *)lp;
+ t = cp[7]; cp[7] = cp[0]; cp[0] = t;
+ t = cp[6]; cp[6] = cp[1]; cp[1] = t;
+ t = cp[5]; cp[5] = cp[2]; cp[2] = t;
+ t = cp[4]; cp[4] = cp[3]; cp[3] = t;
+ lp++;
+ }
+}
+#endif
+
+#ifndef TIFFSwabFloat
+void
+TIFFSwabFloat(float* fp)
+{
+ register unsigned char* cp = (unsigned char*) fp;
+ unsigned char t;
+ assert(sizeof(float)==4);
+ t = cp[3]; cp[3] = cp[0]; cp[0] = t;
+ t = cp[2]; cp[2] = cp[1]; cp[1] = t;
+}
+#endif
+
+#ifndef TIFFSwabArrayOfFloat
+void
+TIFFSwabArrayOfFloat(register float* fp, tmsize_t n)
+{
+ register unsigned char *cp;
+ register unsigned char t;
+ assert(sizeof(float)==4);
+ /* XXX unroll loop some */
+ while (n-- > 0) {
+ cp = (unsigned char *)fp;
+ t = cp[3]; cp[3] = cp[0]; cp[0] = t;
+ t = cp[2]; cp[2] = cp[1]; cp[1] = t;
+ fp++;
+ }
+}
+#endif
+
+#ifndef TIFFSwabDouble
+void
+TIFFSwabDouble(double *dp)
+{
+ register unsigned char* cp = (unsigned char*) dp;
+ unsigned char t;
+ assert(sizeof(double)==8);
+ t = cp[7]; cp[7] = cp[0]; cp[0] = t;
+ t = cp[6]; cp[6] = cp[1]; cp[1] = t;
+ t = cp[5]; cp[5] = cp[2]; cp[2] = t;
+ t = cp[4]; cp[4] = cp[3]; cp[3] = t;
+}
+#endif
+
+#ifndef TIFFSwabArrayOfDouble
+void
+TIFFSwabArrayOfDouble(double* dp, tmsize_t n)
+{
+ register unsigned char *cp;
+ register unsigned char t;
+ assert(sizeof(double)==8);
+ /* XXX unroll loop some */
+ while (n-- > 0) {
+ cp = (unsigned char *)dp;
+ t = cp[7]; cp[7] = cp[0]; cp[0] = t;
+ t = cp[6]; cp[6] = cp[1]; cp[1] = t;
+ t = cp[5]; cp[5] = cp[2]; cp[2] = t;
+ t = cp[4]; cp[4] = cp[3]; cp[3] = t;
+ dp++;
+ }
+}
+#endif
+
+/*
+ * Bit reversal tables. TIFFBitRevTable[<byte>] gives
+ * the bit reversed value of <byte>. Used in various
+ * places in the library when the FillOrder requires
+ * bit reversal of byte values (e.g. CCITT Fax 3
+ * encoding/decoding). TIFFNoBitRevTable is provided
+ * for algorithms that want an equivalent table that
+ * do not reverse bit values.
+ */
+static const unsigned char TIFFBitRevTable[256] = {
+ 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
+ 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
+ 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
+ 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
+ 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
+ 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
+ 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
+ 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
+ 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
+ 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
+ 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
+ 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
+ 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
+ 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
+ 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
+ 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
+ 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
+ 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
+ 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
+ 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
+ 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
+ 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
+ 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
+ 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
+ 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
+ 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
+ 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
+ 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
+ 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
+ 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
+ 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
+ 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
+};
+static const unsigned char TIFFNoBitRevTable[256] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+ 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
+ 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
+ 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
+ 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
+ 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+ 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
+ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
+ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
+ 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
+ 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
+ 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
+ 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
+ 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
+ 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+ 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+ 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+ 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+ 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
+};
+
+const unsigned char*
+TIFFGetBitRevTable(int reversed)
+{
+ return (reversed ? TIFFBitRevTable : TIFFNoBitRevTable);
+}
+
+void
+TIFFReverseBits(uint8* cp, tmsize_t n)
+{
+ for (; n > 8; n -= 8) {
+ cp[0] = TIFFBitRevTable[cp[0]];
+ cp[1] = TIFFBitRevTable[cp[1]];
+ cp[2] = TIFFBitRevTable[cp[2]];
+ cp[3] = TIFFBitRevTable[cp[3]];
+ cp[4] = TIFFBitRevTable[cp[4]];
+ cp[5] = TIFFBitRevTable[cp[5]];
+ cp[6] = TIFFBitRevTable[cp[6]];
+ cp[7] = TIFFBitRevTable[cp[7]];
+ cp += 8;
+ }
+ while (n-- > 0)
+ *cp = TIFFBitRevTable[*cp], cp++;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_thunder.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_thunder.c
new file mode 100644
index 0000000..e7cb0d4
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_thunder.c
@@ -0,0 +1,210 @@
+/* $Id: tif_thunder.c,v 1.12 2011-04-02 20:54:09 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include <assert.h>
+#ifdef THUNDER_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * ThunderScan 4-bit Compression Algorithm Support
+ */
+
+/*
+ * ThunderScan uses an encoding scheme designed for
+ * 4-bit pixel values. Data is encoded in bytes, with
+ * each byte split into a 2-bit code word and a 6-bit
+ * data value. The encoding gives raw data, runs of
+ * pixels, or pixel values encoded as a delta from the
+ * previous pixel value. For the latter, either 2-bit
+ * or 3-bit delta values are used, with the deltas packed
+ * into a single byte.
+ */
+#define THUNDER_DATA 0x3f /* mask for 6-bit data */
+#define THUNDER_CODE 0xc0 /* mask for 2-bit code word */
+/* code values */
+#define THUNDER_RUN 0x00 /* run of pixels w/ encoded count */
+#define THUNDER_2BITDELTAS 0x40 /* 3 pixels w/ encoded 2-bit deltas */
+#define DELTA2_SKIP 2 /* skip code for 2-bit deltas */
+#define THUNDER_3BITDELTAS 0x80 /* 2 pixels w/ encoded 3-bit deltas */
+#define DELTA3_SKIP 4 /* skip code for 3-bit deltas */
+#define THUNDER_RAW 0xc0 /* raw data encoded */
+
+static const int twobitdeltas[4] = { 0, 1, 0, -1 };
+static const int threebitdeltas[8] = { 0, 1, 2, 3, 0, -3, -2, -1 };
+
+#define SETPIXEL(op, v) { \
+ lastpixel = (v) & 0xf; \
+ if ( npixels < maxpixels ) \
+ { \
+ if (npixels++ & 1) \
+ *op++ |= lastpixel; \
+ else \
+ op[0] = (uint8) (lastpixel << 4); \
+ } \
+}
+
+static int
+ThunderSetupDecode(TIFF* tif)
+{
+ static const char module[] = "ThunderSetupDecode";
+
+ if( tif->tif_dir.td_bitspersample != 4 )
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Wrong bitspersample value (%d), Thunder decoder only supports 4bits per sample.",
+ (int) tif->tif_dir.td_bitspersample );
+ return 0;
+ }
+
+
+ return (1);
+}
+
+static int
+ThunderDecode(TIFF* tif, uint8* op, tmsize_t maxpixels)
+{
+ static const char module[] = "ThunderDecode";
+ register unsigned char *bp;
+ register tmsize_t cc;
+ unsigned int lastpixel;
+ tmsize_t npixels;
+
+ bp = (unsigned char *)tif->tif_rawcp;
+ cc = tif->tif_rawcc;
+ lastpixel = 0;
+ npixels = 0;
+ while (cc > 0 && npixels < maxpixels) {
+ int n, delta;
+
+ n = *bp++, cc--;
+ switch (n & THUNDER_CODE) {
+ case THUNDER_RUN: /* pixel run */
+ /*
+ * Replicate the last pixel n times,
+ * where n is the lower-order 6 bits.
+ */
+ if (npixels & 1) {
+ op[0] |= lastpixel;
+ lastpixel = *op++; npixels++; n--;
+ } else
+ lastpixel |= lastpixel << 4;
+ npixels += n;
+ if (npixels < maxpixels) {
+ for (; n > 0; n -= 2)
+ *op++ = (uint8) lastpixel;
+ }
+ if (n == -1)
+ *--op &= 0xf0;
+ lastpixel &= 0xf;
+ break;
+ case THUNDER_2BITDELTAS: /* 2-bit deltas */
+ if ((delta = ((n >> 4) & 3)) != DELTA2_SKIP)
+ SETPIXEL(op, lastpixel + twobitdeltas[delta]);
+ if ((delta = ((n >> 2) & 3)) != DELTA2_SKIP)
+ SETPIXEL(op, lastpixel + twobitdeltas[delta]);
+ if ((delta = (n & 3)) != DELTA2_SKIP)
+ SETPIXEL(op, lastpixel + twobitdeltas[delta]);
+ break;
+ case THUNDER_3BITDELTAS: /* 3-bit deltas */
+ if ((delta = ((n >> 3) & 7)) != DELTA3_SKIP)
+ SETPIXEL(op, lastpixel + threebitdeltas[delta]);
+ if ((delta = (n & 7)) != DELTA3_SKIP)
+ SETPIXEL(op, lastpixel + threebitdeltas[delta]);
+ break;
+ case THUNDER_RAW: /* raw data */
+ SETPIXEL(op, n);
+ break;
+ }
+ }
+ tif->tif_rawcp = (uint8*) bp;
+ tif->tif_rawcc = cc;
+ if (npixels != maxpixels) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s data at scanline %lu (%I64u != %I64u)",
+ npixels < maxpixels ? "Not enough" : "Too much",
+ (unsigned long) tif->tif_row,
+ (unsigned __int64) npixels,
+ (unsigned __int64) maxpixels);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s data at scanline %lu (%llu != %llu)",
+ npixels < maxpixels ? "Not enough" : "Too much",
+ (unsigned long) tif->tif_row,
+ (unsigned long long) npixels,
+ (unsigned long long) maxpixels);
+#endif
+ return (0);
+ }
+
+ return (1);
+}
+
+static int
+ThunderDecodeRow(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
+{
+ static const char module[] = "ThunderDecodeRow";
+ uint8* row = buf;
+
+ (void) s;
+ if (occ % tif->tif_scanlinesize)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
+ return (0);
+ }
+ while (occ > 0) {
+ if (!ThunderDecode(tif, row, tif->tif_dir.td_imagewidth))
+ return (0);
+ occ -= tif->tif_scanlinesize;
+ row += tif->tif_scanlinesize;
+ }
+ return (1);
+}
+
+int
+TIFFInitThunderScan(TIFF* tif, int scheme)
+{
+ (void) scheme;
+
+ tif->tif_setupdecode = ThunderSetupDecode;
+ tif->tif_decoderow = ThunderDecodeRow;
+ tif->tif_decodestrip = ThunderDecodeRow;
+ return (1);
+}
+#endif /* THUNDER_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_tile.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_tile.c
new file mode 100644
index 0000000..24ba82c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_tile.c
@@ -0,0 +1,302 @@
+/* $Id: tif_tile.c,v 1.23 2012-06-06 05:33:55 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1991-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Tiled Image Support Routines.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+/*
+ * Compute which tile an (x,y,z,s) value is in.
+ */
+uint32
+TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+ uint32 dx = td->td_tilewidth;
+ uint32 dy = td->td_tilelength;
+ uint32 dz = td->td_tiledepth;
+ uint32 tile = 1;
+
+ if (td->td_imagedepth == 1)
+ z = 0;
+ if (dx == (uint32) -1)
+ dx = td->td_imagewidth;
+ if (dy == (uint32) -1)
+ dy = td->td_imagelength;
+ if (dz == (uint32) -1)
+ dz = td->td_imagedepth;
+ if (dx != 0 && dy != 0 && dz != 0) {
+ uint32 xpt = TIFFhowmany_32(td->td_imagewidth, dx);
+ uint32 ypt = TIFFhowmany_32(td->td_imagelength, dy);
+ uint32 zpt = TIFFhowmany_32(td->td_imagedepth, dz);
+
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+ tile = (xpt*ypt*zpt)*s +
+ (xpt*ypt)*(z/dz) +
+ xpt*(y/dy) +
+ x/dx;
+ else
+ tile = (xpt*ypt)*(z/dz) + xpt*(y/dy) + x/dx;
+ }
+ return (tile);
+}
+
+/*
+ * Check an (x,y,z,s) coordinate
+ * against the image bounds.
+ */
+int
+TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (x >= td->td_imagewidth) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%lu: Col out of range, max %lu",
+ (unsigned long) x,
+ (unsigned long) (td->td_imagewidth - 1));
+ return (0);
+ }
+ if (y >= td->td_imagelength) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%lu: Row out of range, max %lu",
+ (unsigned long) y,
+ (unsigned long) (td->td_imagelength - 1));
+ return (0);
+ }
+ if (z >= td->td_imagedepth) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%lu: Depth out of range, max %lu",
+ (unsigned long) z,
+ (unsigned long) (td->td_imagedepth - 1));
+ return (0);
+ }
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE &&
+ s >= td->td_samplesperpixel) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "%lu: Sample out of range, max %lu",
+ (unsigned long) s,
+ (unsigned long) (td->td_samplesperpixel - 1));
+ return (0);
+ }
+ return (1);
+}
+
+/*
+ * Compute how many tiles are in an image.
+ */
+uint32
+TIFFNumberOfTiles(TIFF* tif)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+ uint32 dx = td->td_tilewidth;
+ uint32 dy = td->td_tilelength;
+ uint32 dz = td->td_tiledepth;
+ uint32 ntiles;
+
+ if (dx == (uint32) -1)
+ dx = td->td_imagewidth;
+ if (dy == (uint32) -1)
+ dy = td->td_imagelength;
+ if (dz == (uint32) -1)
+ dz = td->td_imagedepth;
+ ntiles = (dx == 0 || dy == 0 || dz == 0) ? 0 :
+ _TIFFMultiply32(tif, _TIFFMultiply32(tif, TIFFhowmany_32(td->td_imagewidth, dx),
+ TIFFhowmany_32(td->td_imagelength, dy),
+ "TIFFNumberOfTiles"),
+ TIFFhowmany_32(td->td_imagedepth, dz), "TIFFNumberOfTiles");
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+ ntiles = _TIFFMultiply32(tif, ntiles, td->td_samplesperpixel,
+ "TIFFNumberOfTiles");
+ return (ntiles);
+}
+
+/*
+ * Compute the # bytes in each row of a tile.
+ */
+uint64
+TIFFTileRowSize64(TIFF* tif)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+ uint64 rowsize;
+
+ if (td->td_tilelength == 0 || td->td_tilewidth == 0)
+ return (0);
+ rowsize = _TIFFMultiply64(tif, td->td_bitspersample, td->td_tilewidth,
+ "TIFFTileRowSize");
+ if (td->td_planarconfig == PLANARCONFIG_CONTIG)
+ rowsize = _TIFFMultiply64(tif, rowsize, td->td_samplesperpixel,
+ "TIFFTileRowSize");
+ return (TIFFhowmany8_64(rowsize));
+}
+tmsize_t
+TIFFTileRowSize(TIFF* tif)
+{
+ static const char module[] = "TIFFTileRowSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFTileRowSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
+}
+
+/*
+ * Compute the # bytes in a variable length, row-aligned tile.
+ */
+uint64
+TIFFVTileSize64(TIFF* tif, uint32 nrows)
+{
+ static const char module[] = "TIFFVTileSize64";
+ TIFFDirectory *td = &tif->tif_dir;
+ if (td->td_tilelength == 0 || td->td_tilewidth == 0 ||
+ td->td_tiledepth == 0)
+ return (0);
+ if ((td->td_planarconfig==PLANARCONFIG_CONTIG)&&
+ (td->td_photometric==PHOTOMETRIC_YCBCR)&&
+ (td->td_samplesperpixel==3)&&
+ (!isUpSampled(tif)))
+ {
+ /*
+ * Packed YCbCr data contain one Cb+Cr for every
+ * HorizontalSampling*VerticalSampling Y values.
+ * Must also roundup width and height when calculating
+ * since images that are not a multiple of the
+ * horizontal/vertical subsampling area include
+ * YCbCr data for the extended image.
+ */
+ uint16 ycbcrsubsampling[2];
+ uint16 samplingblock_samples;
+ uint32 samplingblocks_hor;
+ uint32 samplingblocks_ver;
+ uint64 samplingrow_samples;
+ uint64 samplingrow_size;
+ TIFFGetFieldDefaulted(tif,TIFFTAG_YCBCRSUBSAMPLING,ycbcrsubsampling+0,
+ ycbcrsubsampling+1);
+ if ((ycbcrsubsampling[0] != 1 && ycbcrsubsampling[0] != 2 && ycbcrsubsampling[0] != 4)
+ ||(ycbcrsubsampling[1] != 1 && ycbcrsubsampling[1] != 2 && ycbcrsubsampling[1] != 4))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid YCbCr subsampling (%dx%d)",
+ ycbcrsubsampling[0],
+ ycbcrsubsampling[1] );
+ return 0;
+ }
+ samplingblock_samples=ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
+ samplingblocks_hor=TIFFhowmany_32(td->td_tilewidth,ycbcrsubsampling[0]);
+ samplingblocks_ver=TIFFhowmany_32(nrows,ycbcrsubsampling[1]);
+ samplingrow_samples=_TIFFMultiply64(tif,samplingblocks_hor,samplingblock_samples,module);
+ samplingrow_size=TIFFhowmany8_64(_TIFFMultiply64(tif,samplingrow_samples,td->td_bitspersample,module));
+ return(_TIFFMultiply64(tif,samplingrow_size,samplingblocks_ver,module));
+ }
+ else
+ return(_TIFFMultiply64(tif,nrows,TIFFTileRowSize64(tif),module));
+}
+tmsize_t
+TIFFVTileSize(TIFF* tif, uint32 nrows)
+{
+ static const char module[] = "TIFFVTileSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFVTileSize64(tif,nrows);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
+}
+
+/*
+ * Compute the # bytes in a row-aligned tile.
+ */
+uint64
+TIFFTileSize64(TIFF* tif)
+{
+ return (TIFFVTileSize64(tif, tif->tif_dir.td_tilelength));
+}
+tmsize_t
+TIFFTileSize(TIFF* tif)
+{
+ static const char module[] = "TIFFTileSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFTileSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
+}
+
+/*
+ * Compute a default tile size based on the image
+ * characteristics and a requested value. If a
+ * request is <1 then we choose a size according
+ * to certain heuristics.
+ */
+void
+TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
+{
+ (*tif->tif_deftilesize)(tif, tw, th);
+}
+
+void
+_TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
+{
+ (void) tif;
+ if (*(int32*) tw < 1)
+ *tw = 256;
+ if (*(int32*) th < 1)
+ *th = 256;
+ /* roundup to a multiple of 16 per the spec */
+ if (*tw & 0xf)
+ *tw = TIFFroundup_32(*tw, 16);
+ if (*th & 0xf)
+ *th = TIFFroundup_32(*th, 16);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_version.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_version.c
new file mode 100644
index 0000000..41aa8b0
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_version.c
@@ -0,0 +1,43 @@
+/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_version.c,v 1.3 2010-03-10 18:56:49 bfriesen Exp $ */
+/*
+ * Copyright (c) 1992-1997 Sam Leffler
+ * Copyright (c) 1992-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+static const char TIFFVersion[] = TIFFLIB_VERSION_STR;
+
+const char*
+TIFFGetVersion(void)
+{
+ return (TIFFVersion);
+}
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_warning.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_warning.c
new file mode 100644
index 0000000..ac6b3b9
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_warning.c
@@ -0,0 +1,87 @@
+/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_warning.c,v 1.3 2010-03-10 18:56:49 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+
+/*TIFFErrorHandlerExt _TIFFwarningHandlerExt = NULL;*/
+/* Modify here for use _TIFFwarningHandlerExt by Sunliang.Liu 20090715 */
+TIFFErrorHandler _TIFFwarningHandler = NULL;
+
+TIFFErrorHandler
+TIFFSetWarningHandler(TIFFErrorHandler handler)
+{
+ TIFFErrorHandler prev = _TIFFwarningHandler;
+ _TIFFwarningHandler = handler;
+ return (prev);
+}
+
+TIFFErrorHandlerExt
+TIFFSetWarningHandlerExt(TIFFErrorHandlerExt handler)
+{
+ TIFFErrorHandlerExt prev = _TIFFwarningHandlerExt;
+ _TIFFwarningHandlerExt = handler;
+ return (prev);
+}
+
+void
+TIFFWarning(const char* module, const char* fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ if (_TIFFwarningHandler)
+ (*_TIFFwarningHandler)(module, fmt, ap);
+ if (_TIFFwarningHandlerExt)
+ (*_TIFFwarningHandlerExt)(0, module, fmt, ap);
+ va_end(ap);
+}
+
+void
+TIFFWarningExt(thandle_t fd, const char* module, const char* fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ if (_TIFFwarningHandler)
+ (*_TIFFwarningHandler)(module, fmt, ap);
+ if (_TIFFwarningHandlerExt)
+ (*_TIFFwarningHandlerExt)(fd, module, fmt, ap);
+ va_end(ap);
+}
+
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_write.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_write.c
new file mode 100644
index 0000000..11a537c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_write.c
@@ -0,0 +1,774 @@
+/* $Id: tif_write.c,v 1.37 2012-08-13 22:10:17 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Scanline-oriented Write Support
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#include <stdio.h>
+
+#define STRIPINCR 20 /* expansion factor on strip array */
+
+#define WRITECHECKSTRIPS(tif, module) \
+ (((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),0,module))
+#define WRITECHECKTILES(tif, module) \
+ (((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),1,module))
+#define BUFFERCHECK(tif) \
+ ((((tif)->tif_flags & TIFF_BUFFERSETUP) && tif->tif_rawdata) || \
+ TIFFWriteBufferSetup((tif), NULL, (tmsize_t) -1))
+
+static int TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module);
+static int TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc);
+
+int
+TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
+{
+ static const char module[] = "TIFFWriteScanline";
+ register TIFFDirectory *td;
+ int status, imagegrew = 0;
+ uint32 strip;
+
+ if (!WRITECHECKSTRIPS(tif, module))
+ return (-1);
+ /*
+ * Handle delayed allocation of data buffer. This
+ * permits it to be sized more intelligently (using
+ * directory information).
+ */
+ if (!BUFFERCHECK(tif))
+ return (-1);
+ tif->tif_flags |= TIFF_BUF4WRITE; /* not strictly sure this is right*/
+
+ td = &tif->tif_dir;
+ /*
+ * Extend image length if needed
+ * (but only for PlanarConfig=1).
+ */
+ if (row >= td->td_imagelength) { /* extend image */
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Can not change \"ImageLength\" when using separate planes");
+ return (-1);
+ }
+ td->td_imagelength = row+1;
+ imagegrew = 1;
+ }
+ /*
+ * Calculate strip and check for crossings.
+ */
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+ if (sample >= td->td_samplesperpixel) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%lu: Sample out of range, max %lu",
+ (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
+ return (-1);
+ }
+ strip = sample*td->td_stripsperimage + row/td->td_rowsperstrip;
+ } else
+ strip = row / td->td_rowsperstrip;
+ /*
+ * Check strip array to make sure there's space. We don't support
+ * dynamically growing files that have data organized in separate
+ * bitplanes because it's too painful. In that case we require that
+ * the imagelength be set properly before the first write (so that the
+ * strips array will be fully allocated above).
+ */
+ if (strip >= td->td_nstrips && !TIFFGrowStrips(tif, 1, module))
+ return (-1);
+ if (strip != tif->tif_curstrip) {
+ /*
+ * Changing strips -- flush any data present.
+ */
+ if (!TIFFFlushData(tif))
+ return (-1);
+ tif->tif_curstrip = strip;
+ /*
+ * Watch out for a growing image. The value of strips/image
+ * will initially be 1 (since it can't be deduced until the
+ * imagelength is known).
+ */
+ if (strip >= td->td_stripsperimage && imagegrew)
+ td->td_stripsperimage =
+ TIFFhowmany_32(td->td_imagelength,td->td_rowsperstrip);
+ tif->tif_row =
+ (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+ if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+ if (!(*tif->tif_setupencode)(tif))
+ return (-1);
+ tif->tif_flags |= TIFF_CODERSETUP;
+ }
+
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+
+ if( td->td_stripbytecount[strip] > 0 )
+ {
+ /* if we are writing over existing tiles, zero length */
+ td->td_stripbytecount[strip] = 0;
+
+ /* this forces TIFFAppendToStrip() to do a seek */
+ tif->tif_curoff = 0;
+ }
+
+ if (!(*tif->tif_preencode)(tif, sample))
+ return (-1);
+ tif->tif_flags |= TIFF_POSTENCODE;
+ }
+ /*
+ * Ensure the write is either sequential or at the
+ * beginning of a strip (or that we can randomly
+ * access the data -- i.e. no encoding).
+ */
+ if (row != tif->tif_row) {
+ if (row < tif->tif_row) {
+ /*
+ * Moving backwards within the same strip:
+ * backup to the start and then decode
+ * forward (below).
+ */
+ tif->tif_row = (strip % td->td_stripsperimage) *
+ td->td_rowsperstrip;
+ tif->tif_rawcp = tif->tif_rawdata;
+ }
+ /*
+ * Seek forward to the desired row.
+ */
+ if (!(*tif->tif_seek)(tif, row - tif->tif_row))
+ return (-1);
+ tif->tif_row = row;
+ }
+
+ /* swab if needed - note that source buffer will be altered */
+ tif->tif_postdecode( tif, (uint8*) buf, tif->tif_scanlinesize );
+
+ status = (*tif->tif_encoderow)(tif, (uint8*) buf,
+ tif->tif_scanlinesize, sample);
+
+ /* we are now poised at the beginning of the next row */
+ tif->tif_row = row + 1;
+ return (status);
+}
+
+/*
+ * Encode the supplied data and write it to the
+ * specified strip.
+ *
+ * NB: Image length must be setup before writing.
+ */
+tmsize_t
+TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFWriteEncodedStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint16 sample;
+
+ if (!WRITECHECKSTRIPS(tif, module))
+ return ((tmsize_t) -1);
+ /*
+ * Check strip array to make sure there's space.
+ * We don't support dynamically growing files that
+ * have data organized in separate bitplanes because
+ * it's too painful. In that case we require that
+ * the imagelength be set properly before the first
+ * write (so that the strips array will be fully
+ * allocated above).
+ */
+ if (strip >= td->td_nstrips) {
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Can not grow image by strips when using separate planes");
+ return ((tmsize_t) -1);
+ }
+ if (!TIFFGrowStrips(tif, 1, module))
+ return ((tmsize_t) -1);
+ td->td_stripsperimage =
+ TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip);
+ }
+ /*
+ * Handle delayed allocation of data buffer. This
+ * permits it to be sized according to the directory
+ * info.
+ */
+ if (!BUFFERCHECK(tif))
+ return ((tmsize_t) -1);
+
+ tif->tif_flags |= TIFF_BUF4WRITE;
+ tif->tif_curstrip = strip;
+
+ tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+ if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+ if (!(*tif->tif_setupencode)(tif))
+ return ((tmsize_t) -1);
+ tif->tif_flags |= TIFF_CODERSETUP;
+ }
+
+ if( td->td_stripbytecount[strip] > 0 )
+ {
+ /* Make sure that at the first attempt of rewriting the tile, we will have */
+ /* more bytes available in the output buffer than the previous byte count, */
+ /* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
+ /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
+ if( tif->tif_rawdatasize <= (tmsize_t)td->td_stripbytecount[strip] )
+ {
+ if( !(TIFFWriteBufferSetup(tif, NULL,
+ (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[strip] + 1), 1024))) )
+ return ((tmsize_t)(-1));
+ }
+
+ /* Force TIFFAppendToStrip() to consider placing data at end
+ of file. */
+ tif->tif_curoff = 0;
+ }
+
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+
+ tif->tif_flags &= ~TIFF_POSTENCODE;
+ sample = (uint16)(strip / td->td_stripsperimage);
+ if (!(*tif->tif_preencode)(tif, sample))
+ return ((tmsize_t) -1);
+
+ /* swab if needed - note that source buffer will be altered */
+ tif->tif_postdecode( tif, (uint8*) data, cc );
+
+ if (!(*tif->tif_encodestrip)(tif, (uint8*) data, cc, sample))
+ return (0);
+ if (!(*tif->tif_postencode)(tif))
+ return ((tmsize_t) -1);
+ if (!isFillOrder(tif, td->td_fillorder) &&
+ (tif->tif_flags & TIFF_NOBITREV) == 0)
+ TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
+ if (tif->tif_rawcc > 0 &&
+ !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
+ return ((tmsize_t) -1);
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+ return (cc);
+}
+
+/*
+ * Write the supplied data to the specified strip.
+ *
+ * NB: Image length must be setup before writing.
+ */
+tmsize_t
+TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFWriteRawStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (!WRITECHECKSTRIPS(tif, module))
+ return ((tmsize_t) -1);
+ /*
+ * Check strip array to make sure there's space.
+ * We don't support dynamically growing files that
+ * have data organized in separate bitplanes because
+ * it's too painful. In that case we require that
+ * the imagelength be set properly before the first
+ * write (so that the strips array will be fully
+ * allocated above).
+ */
+ if (strip >= td->td_nstrips) {
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Can not grow image by strips when using separate planes");
+ return ((tmsize_t) -1);
+ }
+ /*
+ * Watch out for a growing image. The value of
+ * strips/image will initially be 1 (since it
+ * can't be deduced until the imagelength is known).
+ */
+ if (strip >= td->td_stripsperimage)
+ td->td_stripsperimage =
+ TIFFhowmany_32(td->td_imagelength,td->td_rowsperstrip);
+ if (!TIFFGrowStrips(tif, 1, module))
+ return ((tmsize_t) -1);
+ }
+ tif->tif_curstrip = strip;
+ tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+ return (TIFFAppendToStrip(tif, strip, (uint8*) data, cc) ?
+ cc : (tmsize_t) -1);
+}
+
+/*
+ * Write and compress a tile of data. The
+ * tile is selected by the (x,y,z,s) coordinates.
+ */
+tmsize_t
+TIFFWriteTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s)
+{
+ if (!TIFFCheckTile(tif, x, y, z, s))
+ return ((tmsize_t)(-1));
+ /*
+ * NB: A tile size of -1 is used instead of tif_tilesize knowing
+ * that TIFFWriteEncodedTile will clamp this to the tile size.
+ * This is done because the tile size may not be defined until
+ * after the output buffer is setup in TIFFWriteBufferSetup.
+ */
+ return (TIFFWriteEncodedTile(tif,
+ TIFFComputeTile(tif, x, y, z, s), buf, (tmsize_t)(-1)));
+}
+
+/*
+ * Encode the supplied data and write it to the
+ * specified tile. There must be space for the
+ * data. The function clamps individual writes
+ * to a tile to the tile size, but does not (and
+ * can not) check that multiple writes to the same
+ * tile do not write more than tile size data.
+ *
+ * NB: Image length must be setup before writing; this
+ * interface does not support automatically growing
+ * the image on each write (as TIFFWriteScanline does).
+ */
+tmsize_t
+TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFWriteEncodedTile";
+ TIFFDirectory *td;
+ uint16 sample;
+
+ if (!WRITECHECKTILES(tif, module))
+ return ((tmsize_t)(-1));
+ td = &tif->tif_dir;
+ if (tile >= td->td_nstrips) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
+ (unsigned long) tile, (unsigned long) td->td_nstrips);
+ return ((tmsize_t)(-1));
+ }
+ /*
+ * Handle delayed allocation of data buffer. This
+ * permits it to be sized more intelligently (using
+ * directory information).
+ */
+ if (!BUFFERCHECK(tif))
+ return ((tmsize_t)(-1));
+
+ tif->tif_flags |= TIFF_BUF4WRITE;
+ tif->tif_curtile = tile;
+
+ if( td->td_stripbytecount[tile] > 0 )
+ {
+ /* Make sure that at the first attempt of rewriting the tile, we will have */
+ /* more bytes available in the output buffer than the previous byte count, */
+ /* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
+ /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
+ if( tif->tif_rawdatasize <= (tmsize_t)td->td_stripbytecount[tile] )
+ {
+ if( !(TIFFWriteBufferSetup(tif, NULL,
+ (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[tile] + 1), 1024))) )
+ return ((tmsize_t)(-1));
+ }
+
+ /* Force TIFFAppendToStrip() to consider placing data at end
+ of file. */
+ tif->tif_curoff = 0;
+ }
+
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+
+ /*
+ * Compute tiles per row & per column to compute
+ * current row and column
+ */
+ tif->tif_row = (tile % TIFFhowmany_32(td->td_imagelength, td->td_tilelength))
+ * td->td_tilelength;
+ tif->tif_col = (tile % TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth))
+ * td->td_tilewidth;
+
+ if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+ if (!(*tif->tif_setupencode)(tif))
+ return ((tmsize_t)(-1));
+ tif->tif_flags |= TIFF_CODERSETUP;
+ }
+ tif->tif_flags &= ~TIFF_POSTENCODE;
+ sample = (uint16)(tile/td->td_stripsperimage);
+ if (!(*tif->tif_preencode)(tif, sample))
+ return ((tmsize_t)(-1));
+ /*
+ * Clamp write amount to the tile size. This is mostly
+ * done so that callers can pass in some large number
+ * (e.g. -1) and have the tile size used instead.
+ */
+ if ( cc < 1 || cc > tif->tif_tilesize)
+ cc = tif->tif_tilesize;
+
+ /* swab if needed - note that source buffer will be altered */
+ tif->tif_postdecode( tif, (uint8*) data, cc );
+
+ if (!(*tif->tif_encodetile)(tif, (uint8*) data, cc, sample))
+ return (0);
+ if (!(*tif->tif_postencode)(tif))
+ return ((tmsize_t)(-1));
+ if (!isFillOrder(tif, td->td_fillorder) &&
+ (tif->tif_flags & TIFF_NOBITREV) == 0)
+ TIFFReverseBits((uint8*)tif->tif_rawdata, tif->tif_rawcc);
+ if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
+ tif->tif_rawdata, tif->tif_rawcc))
+ return ((tmsize_t)(-1));
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+ return (cc);
+}
+
+/*
+ * Write the supplied data to the specified strip.
+ * There must be space for the data; we don't check
+ * if strips overlap!
+ *
+ * NB: Image length must be setup before writing; this
+ * interface does not support automatically growing
+ * the image on each write (as TIFFWriteScanline does).
+ */
+tmsize_t
+TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFWriteRawTile";
+
+ if (!WRITECHECKTILES(tif, module))
+ return ((tmsize_t)(-1));
+ if (tile >= tif->tif_dir.td_nstrips) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
+ (unsigned long) tile,
+ (unsigned long) tif->tif_dir.td_nstrips);
+ return ((tmsize_t)(-1));
+ }
+ return (TIFFAppendToStrip(tif, tile, (uint8*) data, cc) ?
+ cc : (tmsize_t)(-1));
+}
+
+#define isUnspecified(tif, f) \
+ (TIFFFieldSet(tif,f) && (tif)->tif_dir.td_imagelength == 0)
+
+int
+TIFFSetupStrips(TIFF* tif)
+{
+ TIFFDirectory* td = &tif->tif_dir;
+
+ if (isTiled(tif))
+ td->td_stripsperimage =
+ isUnspecified(tif, FIELD_TILEDIMENSIONS) ?
+ td->td_samplesperpixel : TIFFNumberOfTiles(tif);
+ else
+ td->td_stripsperimage =
+ isUnspecified(tif, FIELD_ROWSPERSTRIP) ?
+ td->td_samplesperpixel : TIFFNumberOfStrips(tif);
+ td->td_nstrips = td->td_stripsperimage;
+ if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+ td->td_stripsperimage /= td->td_samplesperpixel;
+ td->td_stripoffset = (uint64 *)
+ _TIFFmalloc(td->td_nstrips * sizeof (uint64));
+ td->td_stripbytecount = (uint64 *)
+ _TIFFmalloc(td->td_nstrips * sizeof (uint64));
+ if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL)
+ return (0);
+ /*
+ * Place data at the end-of-file
+ * (by setting offsets to zero).
+ */
+ _TIFFmemset(td->td_stripoffset, 0, td->td_nstrips*sizeof (uint64));
+ _TIFFmemset(td->td_stripbytecount, 0, td->td_nstrips*sizeof (uint64));
+ TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS);
+ TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
+ return (1);
+}
+#undef isUnspecified
+
+/*
+ * Verify file is writable and that the directory
+ * information is setup properly. In doing the latter
+ * we also "freeze" the state of the directory so
+ * that important information is not changed.
+ */
+int
+TIFFWriteCheck(TIFF* tif, int tiles, const char* module)
+{
+ if (tif->tif_mode == O_RDONLY) {
+ TIFFErrorExt(tif->tif_clientdata, module, "File not open for writing");
+ return (0);
+ }
+ if (tiles ^ isTiled(tif)) {
+ TIFFErrorExt(tif->tif_clientdata, module, tiles ?
+ "Can not write tiles to a stripped image" :
+ "Can not write scanlines to a tiled image");
+ return (0);
+ }
+
+ _TIFFFillStriles( tif );
+
+ /*
+ * On the first write verify all the required information
+ * has been setup and initialize any data structures that
+ * had to wait until directory information was set.
+ * Note that a lot of our work is assumed to remain valid
+ * because we disallow any of the important parameters
+ * from changing after we start writing (i.e. once
+ * TIFF_BEENWRITING is set, TIFFSetField will only allow
+ * the image's length to be changed).
+ */
+ if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Must set \"ImageWidth\" before writing data");
+ return (0);
+ }
+ if (tif->tif_dir.td_samplesperpixel == 1) {
+ /*
+ * Planarconfiguration is irrelevant in case of single band
+ * images and need not be included. We will set it anyway,
+ * because this field is used in other parts of library even
+ * in the single band case.
+ */
+ if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG))
+ tif->tif_dir.td_planarconfig = PLANARCONFIG_CONTIG;
+ } else {
+ if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Must set \"PlanarConfiguration\" before writing data");
+ return (0);
+ }
+ }
+ if (tif->tif_dir.td_stripoffset == NULL && !TIFFSetupStrips(tif)) {
+ tif->tif_dir.td_nstrips = 0;
+ TIFFErrorExt(tif->tif_clientdata, module, "No space for %s arrays",
+ isTiled(tif) ? "tile" : "strip");
+ return (0);
+ }
+ if (isTiled(tif))
+ {
+ tif->tif_tilesize = TIFFTileSize(tif);
+ if (tif->tif_tilesize == 0)
+ return (0);
+ }
+ else
+ tif->tif_tilesize = (tmsize_t)(-1);
+ tif->tif_scanlinesize = TIFFScanlineSize(tif);
+ if (tif->tif_scanlinesize == 0)
+ return (0);
+ tif->tif_flags |= TIFF_BEENWRITING;
+ return (1);
+}
+
+/*
+ * Setup the raw data buffer used for encoding.
+ */
+int
+TIFFWriteBufferSetup(TIFF* tif, void* bp, tmsize_t size)
+{
+ static const char module[] = "TIFFWriteBufferSetup";
+
+ if (tif->tif_rawdata) {
+ if (tif->tif_flags & TIFF_MYBUFFER) {
+ _TIFFfree(tif->tif_rawdata);
+ tif->tif_flags &= ~TIFF_MYBUFFER;
+ }
+ tif->tif_rawdata = NULL;
+ }
+ if (size == (tmsize_t)(-1)) {
+ size = (isTiled(tif) ?
+ tif->tif_tilesize : TIFFStripSize(tif));
+ /*
+ * Make raw data buffer at least 8K
+ */
+ if (size < 8*1024)
+ size = 8*1024;
+ bp = NULL; /* NB: force malloc */
+ }
+ if (bp == NULL) {
+ bp = _TIFFmalloc(size);
+ if (bp == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, module, "No space for output buffer");
+ return (0);
+ }
+ tif->tif_flags |= TIFF_MYBUFFER;
+ } else
+ tif->tif_flags &= ~TIFF_MYBUFFER;
+ tif->tif_rawdata = (uint8*) bp;
+ tif->tif_rawdatasize = size;
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+ tif->tif_flags |= TIFF_BUFFERSETUP;
+ return (1);
+}
+
+/*
+ * Grow the strip data structures by delta strips.
+ */
+static int
+TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module)
+{
+ TIFFDirectory *td = &tif->tif_dir;
+ uint64* new_stripoffset;
+ uint64* new_stripbytecount;
+
+ assert(td->td_planarconfig == PLANARCONFIG_CONTIG);
+ new_stripoffset = (uint64*)_TIFFrealloc(td->td_stripoffset,
+ (td->td_nstrips + delta) * sizeof (uint64));
+ new_stripbytecount = (uint64*)_TIFFrealloc(td->td_stripbytecount,
+ (td->td_nstrips + delta) * sizeof (uint64));
+ if (new_stripoffset == NULL || new_stripbytecount == NULL) {
+ if (new_stripoffset)
+ _TIFFfree(new_stripoffset);
+ if (new_stripbytecount)
+ _TIFFfree(new_stripbytecount);
+ td->td_nstrips = 0;
+ TIFFErrorExt(tif->tif_clientdata, module, "No space to expand strip arrays");
+ return (0);
+ }
+ td->td_stripoffset = new_stripoffset;
+ td->td_stripbytecount = new_stripbytecount;
+ _TIFFmemset(td->td_stripoffset + td->td_nstrips,
+ 0, delta*sizeof (uint64));
+ _TIFFmemset(td->td_stripbytecount + td->td_nstrips,
+ 0, delta*sizeof (uint64));
+ td->td_nstrips += delta;
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+
+ return (1);
+}
+
+/*
+ * Append the data to the specified strip.
+ */
+static int
+TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFAppendToStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint64 m;
+ int64 old_byte_count = -1;
+
+ if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
+ assert(td->td_nstrips > 0);
+
+ if( td->td_stripbytecount[strip] != 0
+ && td->td_stripoffset[strip] != 0
+ && td->td_stripbytecount[strip] >= (uint64) cc )
+ {
+ /*
+ * There is already tile data on disk, and the new tile
+ * data we have will fit in the same space. The only
+ * aspect of this that is risky is that there could be
+ * more data to append to this strip before we are done
+ * depending on how we are getting called.
+ */
+ if (!SeekOK(tif, td->td_stripoffset[strip])) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Seek error at scanline %lu",
+ (unsigned long)tif->tif_row);
+ return (0);
+ }
+ }
+ else
+ {
+ /*
+ * Seek to end of file, and set that as our location to
+ * write this strip.
+ */
+ td->td_stripoffset[strip] = TIFFSeekFile(tif, 0, SEEK_END);
+ tif->tif_flags |= TIFF_DIRTYSTRIP;
+ }
+
+ tif->tif_curoff = td->td_stripoffset[strip];
+
+ /*
+ * We are starting a fresh strip/tile, so set the size to zero.
+ */
+ old_byte_count = td->td_stripbytecount[strip];
+ td->td_stripbytecount[strip] = 0;
+ }
+
+ m = tif->tif_curoff+cc;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ m = (uint32)m;
+ if ((m<tif->tif_curoff)||(m<(uint64)cc))
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Maximum TIFF file size exceeded");
+ return (0);
+ }
+ if (!WriteOK(tif, data, cc)) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Write error at scanline %lu",
+ (unsigned long) tif->tif_row);
+ return (0);
+ }
+ tif->tif_curoff = m;
+ td->td_stripbytecount[strip] += cc;
+
+ if( (int64) td->td_stripbytecount[strip] != old_byte_count )
+ tif->tif_flags |= TIFF_DIRTYSTRIP;
+
+ return (1);
+}
+
+/*
+ * Internal version of TIFFFlushData that can be
+ * called by ``encodestrip routines'' w/o concern
+ * for infinite recursion.
+ */
+int
+TIFFFlushData1(TIFF* tif)
+{
+ if (tif->tif_rawcc > 0 && tif->tif_flags & TIFF_BUF4WRITE ) {
+ if (!isFillOrder(tif, tif->tif_dir.td_fillorder) &&
+ (tif->tif_flags & TIFF_NOBITREV) == 0)
+ TIFFReverseBits((uint8*)tif->tif_rawdata,
+ tif->tif_rawcc);
+ if (!TIFFAppendToStrip(tif,
+ isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip,
+ tif->tif_rawdata, tif->tif_rawcc))
+ return (0);
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+ }
+ return (1);
+}
+
+/*
+ * Set the current write offset. This should only be
+ * used to set the offset to a known previous location
+ * (very carefully), or to 0 so that the next write gets
+ * appended to the end of the file.
+ */
+void
+TIFFSetWriteOffset(TIFF* tif, toff_t off)
+{
+ tif->tif_curoff = off;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tif_zip.c b/core/src/fxcodec/fx_tiff/tiff_v403/tif_zip.c
new file mode 100644
index 0000000..0bb2a8c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tif_zip.c
@@ -0,0 +1,471 @@
+/* $Id: tif_zip.c,v 1.31 2011-01-06 16:00:23 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1995-1997 Sam Leffler
+ * Copyright (c) 1995-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
+#include "tiffiop.h"
+#ifdef ZIP_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * ZIP (aka Deflate) Compression Support
+ *
+ * This file is simply an interface to the zlib library written by
+ * Jean-loup Gailly and Mark Adler. You must use version 1.0 or later
+ * of the library: this code assumes the 1.0 API and also depends on
+ * the ability to write the zlib header multiple times (one per strip)
+ * which was not possible with versions prior to 0.95. Note also that
+ * older versions of this codec avoided this bug by supressing the header
+ * entirely. This means that files written with the old library cannot
+ * be read; they should be converted to a different compression scheme
+ * and then reconverted.
+ *
+ * The data format used by the zlib library is described in the files
+ * zlib-3.1.doc, deflate-1.1.doc and gzip-4.1.doc, available in the
+ * directory ftp://ftp.uu.net/pub/archiving/zip/doc. The library was
+ * last found at ftp://ftp.uu.net/pub/archiving/zip/zlib/zlib-0.99.tar.gz.
+ */
+#include "tif_predict.h"
+#include "../../fx_zlib/include/fx_zlib.h"
+
+#include <stdio.h>
+
+/*
+ * Sigh, ZLIB_VERSION is defined as a string so there's no
+ * way to do a proper check here. Instead we guess based
+ * on the presence of #defines that were added between the
+ * 0.95 and 1.0 distributions.
+ */
+#if !defined(Z_NO_COMPRESSION) || !defined(Z_DEFLATED)
+#error "Antiquated ZLIB software; you must use version 1.0 or later"
+#endif
+
+/*
+ * State block for each open TIFF
+ * file using ZIP compression/decompression.
+ */
+typedef struct {
+ TIFFPredictorState predict;
+ z_stream stream;
+ int zipquality; /* compression level */
+ int state; /* state flags */
+#define ZSTATE_INIT_DECODE 0x01
+#define ZSTATE_INIT_ENCODE 0x02
+
+ TIFFVGetMethod vgetparent; /* super-class method */
+ TIFFVSetMethod vsetparent; /* super-class method */
+} ZIPState;
+
+#define ZState(tif) ((ZIPState*) (tif)->tif_data)
+#define DecoderState(tif) ZState(tif)
+#define EncoderState(tif) ZState(tif)
+
+static int ZIPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s);
+static int ZIPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s);
+
+static int
+ZIPFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
+
+static int
+ZIPSetupDecode(TIFF* tif)
+{
+ static const char module[] = "ZIPSetupDecode";
+ ZIPState* sp = DecoderState(tif);
+
+ assert(sp != NULL);
+
+ /* if we were last encoding, terminate this mode */
+ if (sp->state & ZSTATE_INIT_ENCODE) {
+ deflateEnd(&sp->stream);
+ sp->state = 0;
+ }
+
+ if (inflateInit(&sp->stream) != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s", sp->stream.msg);
+ return (0);
+ } else {
+ sp->state |= ZSTATE_INIT_DECODE;
+ return (1);
+ }
+}
+
+/*
+ * Setup state for decoding a strip.
+ */
+static int
+ZIPPreDecode(TIFF* tif, uint16 s)
+{
+ static const char module[] = "ZIPPreDecode";
+ ZIPState* sp = DecoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+
+ if( (sp->state & ZSTATE_INIT_DECODE) == 0 )
+ tif->tif_setupdecode( tif );
+
+ sp->stream.next_in = tif->tif_rawdata;
+ assert(sizeof(sp->stream.avail_in)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_in = (uInt) tif->tif_rawcc;
+ if ((tmsize_t)sp->stream.avail_in != tif->tif_rawcc)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
+ return (inflateReset(&sp->stream) == Z_OK);
+}
+
+static int
+ZIPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
+{
+ static const char module[] = "ZIPDecode";
+ ZIPState* sp = DecoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+ assert(sp->state == ZSTATE_INIT_DECODE);
+
+ sp->stream.next_in = tif->tif_rawcp;
+ sp->stream.avail_in = (uInt) tif->tif_rawcc;
+
+ sp->stream.next_out = op;
+ assert(sizeof(sp->stream.avail_out)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_out = (uInt) occ;
+ if ((tmsize_t)sp->stream.avail_out != occ)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
+ do {
+ int state = inflate(&sp->stream, Z_PARTIAL_FLUSH);
+ if (state == Z_STREAM_END)
+ break;
+ if (state == Z_DATA_ERROR) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Decoding error at scanline %lu, %s",
+ (unsigned long) tif->tif_row, sp->stream.msg);
+ if (inflateSync(&sp->stream) != Z_OK)
+ return (0);
+ continue;
+ }
+ if (state != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
+ return (0);
+ }
+ } while (sp->stream.avail_out > 0);
+ if (sp->stream.avail_out != 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %lu (short " TIFF_UINT64_FORMAT " bytes)",
+ (unsigned long) tif->tif_row, (TIFF_UINT64_T) sp->stream.avail_out);
+ return (0);
+ }
+
+ tif->tif_rawcp = sp->stream.next_in;
+ tif->tif_rawcc = sp->stream.avail_in;
+
+ return (1);
+}
+
+static int
+ZIPSetupEncode(TIFF* tif)
+{
+ static const char module[] = "ZIPSetupEncode";
+ ZIPState* sp = EncoderState(tif);
+
+ assert(sp != NULL);
+ if (sp->state & ZSTATE_INIT_DECODE) {
+ inflateEnd(&sp->stream);
+ sp->state = 0;
+ }
+
+ if (deflateInit(&sp->stream, sp->zipquality) != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s", sp->stream.msg);
+ return (0);
+ } else {
+ sp->state |= ZSTATE_INIT_ENCODE;
+ return (1);
+ }
+}
+
+/*
+ * Reset encoding state at the start of a strip.
+ */
+static int
+ZIPPreEncode(TIFF* tif, uint16 s)
+{
+ static const char module[] = "ZIPPreEncode";
+ ZIPState *sp = EncoderState(tif);
+
+ (void) s;
+ assert(sp != NULL);
+ if( sp->state != ZSTATE_INIT_ENCODE )
+ tif->tif_setupencode( tif );
+
+ sp->stream.next_out = tif->tif_rawdata;
+ assert(sizeof(sp->stream.avail_out)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_out = (uInt)tif->tif_rawdatasize;
+ if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
+ return (deflateReset(&sp->stream) == Z_OK);
+}
+
+/*
+ * Encode a chunk of pixels.
+ */
+static int
+ZIPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+{
+ static const char module[] = "ZIPEncode";
+ ZIPState *sp = EncoderState(tif);
+
+ assert(sp != NULL);
+ assert(sp->state == ZSTATE_INIT_ENCODE);
+
+ (void) s;
+ sp->stream.next_in = bp;
+ assert(sizeof(sp->stream.avail_in)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_in = (uInt) cc;
+ if ((tmsize_t)sp->stream.avail_in != cc)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
+ do {
+ if (deflate(&sp->stream, Z_NO_FLUSH) != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Encoder error: %s",
+ sp->stream.msg);
+ return (0);
+ }
+ if (sp->stream.avail_out == 0) {
+ tif->tif_rawcc = tif->tif_rawdatasize;
+ TIFFFlushData1(tif);
+ sp->stream.next_out = tif->tif_rawdata;
+ sp->stream.avail_out = (uInt) tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in ZIPPreEncode */
+ }
+ } while (sp->stream.avail_in > 0);
+ return (1);
+}
+
+/*
+ * Finish off an encoded strip by flushing the last
+ * string and tacking on an End Of Information code.
+ */
+static int
+ZIPPostEncode(TIFF* tif)
+{
+ static const char module[] = "ZIPPostEncode";
+ ZIPState *sp = EncoderState(tif);
+ int state;
+
+ sp->stream.avail_in = 0;
+ do {
+ state = deflate(&sp->stream, Z_FINISH);
+ switch (state) {
+ case Z_STREAM_END:
+ case Z_OK:
+ if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize)
+ {
+ tif->tif_rawcc = tif->tif_rawdatasize - sp->stream.avail_out;
+ TIFFFlushData1(tif);
+ sp->stream.next_out = tif->tif_rawdata;
+ sp->stream.avail_out = (uInt) tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in ZIPPreEncode */
+ }
+ break;
+ default:
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
+ return (0);
+ }
+ } while (state != Z_STREAM_END);
+ return (1);
+}
+
+static void
+ZIPCleanup(TIFF* tif)
+{
+ ZIPState* sp = ZState(tif);
+
+ assert(sp != 0);
+
+ (void)TIFFPredictorCleanup(tif);
+
+ tif->tif_tagmethods.vgetfield = sp->vgetparent;
+ tif->tif_tagmethods.vsetfield = sp->vsetparent;
+
+ if (sp->state & ZSTATE_INIT_ENCODE) {
+ deflateEnd(&sp->stream);
+ sp->state = 0;
+ } else if( sp->state & ZSTATE_INIT_DECODE) {
+ inflateEnd(&sp->stream);
+ sp->state = 0;
+ }
+ _TIFFfree(sp);
+ tif->tif_data = NULL;
+
+ _TIFFSetDefaultCompressionState(tif);
+}
+
+static int
+ZIPVSetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ static const char module[] = "ZIPVSetField";
+ ZIPState* sp = ZState(tif);
+
+ switch (tag) {
+ case TIFFTAG_ZIPQUALITY:
+ sp->zipquality = (int) va_arg(ap, int);
+ if ( sp->state&ZSTATE_INIT_ENCODE ) {
+ if (deflateParams(&sp->stream,
+ sp->zipquality, Z_DEFAULT_STRATEGY) != Z_OK) {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
+ return (0);
+ }
+ }
+ return (1);
+ default:
+ return (*sp->vsetparent)(tif, tag, ap);
+ }
+ /*NOTREACHED*/
+}
+
+static int
+ZIPVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ ZIPState* sp = ZState(tif);
+
+ switch (tag) {
+ case TIFFTAG_ZIPQUALITY:
+ *va_arg(ap, int*) = sp->zipquality;
+ break;
+ default:
+ return (*sp->vgetparent)(tif, tag, ap);
+ }
+ return (1);
+}
+
+static const TIFFField zipFields[] = {
+ { TIFFTAG_ZIPQUALITY, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "", NULL },
+};
+
+int
+TIFFInitZIP(TIFF* tif, int scheme)
+{
+ static const char module[] = "TIFFInitZIP";
+ ZIPState* sp;
+
+ assert( (scheme == COMPRESSION_DEFLATE)
+ || (scheme == COMPRESSION_ADOBE_DEFLATE));
+
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, zipFields, TIFFArrayCount(zipFields))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Merging Deflate codec-specific tags failed");
+ return 0;
+ }
+
+ /*
+ * Allocate state block so tag methods have storage to record values.
+ */
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof (ZIPState));
+ if (tif->tif_data == NULL)
+ goto bad;
+ sp = ZState(tif);
+ sp->stream.zalloc = NULL;
+ sp->stream.zfree = NULL;
+ sp->stream.opaque = NULL;
+ sp->stream.data_type = Z_BINARY;
+
+ /*
+ * Override parent get/set field methods.
+ */
+ sp->vgetparent = tif->tif_tagmethods.vgetfield;
+ tif->tif_tagmethods.vgetfield = ZIPVGetField; /* hook for codec tags */
+ sp->vsetparent = tif->tif_tagmethods.vsetfield;
+ tif->tif_tagmethods.vsetfield = ZIPVSetField; /* hook for codec tags */
+
+ /* Default values for codec-specific fields */
+ sp->zipquality = Z_DEFAULT_COMPRESSION; /* default comp. level */
+ sp->state = 0;
+
+ /*
+ * Install codec methods.
+ */
+ tif->tif_fixuptags = ZIPFixupTags;
+ tif->tif_setupdecode = ZIPSetupDecode;
+ tif->tif_predecode = ZIPPreDecode;
+ tif->tif_decoderow = ZIPDecode;
+ tif->tif_decodestrip = ZIPDecode;
+ tif->tif_decodetile = ZIPDecode;
+ tif->tif_setupencode = ZIPSetupEncode;
+ tif->tif_preencode = ZIPPreEncode;
+ tif->tif_postencode = ZIPPostEncode;
+ tif->tif_encoderow = ZIPEncode;
+ tif->tif_encodestrip = ZIPEncode;
+ tif->tif_encodetile = ZIPEncode;
+ tif->tif_cleanup = ZIPCleanup;
+ /*
+ * Setup predictor setup.
+ */
+ (void) TIFFPredictorInit(tif);
+ return (1);
+bad:
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for ZIP state block");
+ return (0);
+}
+#endif /* ZIP_SUPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
+#endif
+
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tiff.h b/core/src/fxcodec/fx_tiff/tiff_v403/tiff.h
new file mode 100644
index 0000000..19b4e79
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tiff.h
@@ -0,0 +1,678 @@
+/* $Id: tiff.h,v 1.68 2012-08-19 16:56:35 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFF_
+#define _TIFF_
+
+#include "tiffconf.h"
+
+/*
+ * Tag Image File Format (TIFF)
+ *
+ * Based on Rev 6.0 from:
+ * Developer's Desk
+ * Aldus Corporation
+ * 411 First Ave. South
+ * Suite 200
+ * Seattle, WA 98104
+ * 206-622-5500
+ *
+ * (http://partners.adobe.com/asn/developer/PDFS/TN/TIFF6.pdf)
+ *
+ * For BigTIFF design notes see the following links
+ * http://www.remotesensing.org/libtiff/bigtiffdesign.html
+ * http://www.awaresystems.be/imaging/tiff/bigtiff.html
+ */
+
+#define TIFF_VERSION_CLASSIC 42
+#define TIFF_VERSION_BIG 43
+
+#define TIFF_BIGENDIAN 0x4d4d
+#define TIFF_LITTLEENDIAN 0x4949
+#define MDI_LITTLEENDIAN 0x5045
+#define MDI_BIGENDIAN 0x4550
+
+/*
+ * Intrinsic data types required by the file format:
+ *
+ * 8-bit quantities int8/uint8
+ * 16-bit quantities int16/uint16
+ * 32-bit quantities int32/uint32
+ * 64-bit quantities int64/uint64
+ * strings unsigned char*
+ */
+
+typedef TIFF_INT8_T int8;
+typedef TIFF_UINT8_T uint8;
+
+typedef TIFF_INT16_T int16;
+typedef TIFF_UINT16_T uint16;
+
+typedef TIFF_INT32_T int32;
+typedef TIFF_UINT32_T uint32;
+
+typedef TIFF_INT64_T int64;
+typedef TIFF_UINT64_T uint64;
+
+/*
+ * Some types as promoted in a variable argument list
+ * We use uint16_vap rather then directly using int, because this way
+ * we document the type we actually want to pass through, conceptually,
+ * rather then confusing the issue by merely stating the type it gets
+ * promoted to
+ */
+
+typedef int uint16_vap;
+
+/*
+ * TIFF header.
+ */
+typedef struct {
+ uint16 tiff_magic; /* magic number (defines byte order) */
+ uint16 tiff_version; /* TIFF version number */
+} TIFFHeaderCommon;
+typedef struct {
+ uint16 tiff_magic; /* magic number (defines byte order) */
+ uint16 tiff_version; /* TIFF version number */
+ uint32 tiff_diroff; /* byte offset to first directory */
+} TIFFHeaderClassic;
+typedef struct {
+ uint16 tiff_magic; /* magic number (defines byte order) */
+ uint16 tiff_version; /* TIFF version number */
+ uint16 tiff_offsetsize; /* size of offsets, should be 8 */
+ uint16 tiff_unused; /* unused word, should be 0 */
+ uint64 tiff_diroff; /* byte offset to first directory */
+} TIFFHeaderBig;
+
+
+/*
+ * NB: In the comments below,
+ * - items marked with a + are obsoleted by revision 5.0,
+ * - items marked with a ! are introduced in revision 6.0.
+ * - items marked with a % are introduced post revision 6.0.
+ * - items marked with a $ are obsoleted by revision 6.0.
+ * - items marked with a & are introduced by Adobe DNG specification.
+ */
+
+/*
+ * Tag data type information.
+ *
+ * Note: RATIONALs are the ratio of two 32-bit integer values.
+ */
+typedef enum {
+ TIFF_NOTYPE = 0, /* placeholder */
+ TIFF_BYTE = 1, /* 8-bit unsigned integer */
+ TIFF_ASCII = 2, /* 8-bit bytes w/ last byte null */
+ TIFF_SHORT = 3, /* 16-bit unsigned integer */
+ TIFF_LONG = 4, /* 32-bit unsigned integer */
+ TIFF_RATIONAL = 5, /* 64-bit unsigned fraction */
+ TIFF_SBYTE = 6, /* !8-bit signed integer */
+ TIFF_UNDEFINED = 7, /* !8-bit untyped data */
+ TIFF_SSHORT = 8, /* !16-bit signed integer */
+ TIFF_SLONG = 9, /* !32-bit signed integer */
+ TIFF_SRATIONAL = 10, /* !64-bit signed fraction */
+ TIFF_FLOAT = 11, /* !32-bit IEEE floating point */
+ TIFF_DOUBLE = 12, /* !64-bit IEEE floating point */
+ TIFF_IFD = 13, /* %32-bit unsigned integer (offset) */
+ TIFF_LONG8 = 16, /* BigTIFF 64-bit unsigned integer */
+ TIFF_SLONG8 = 17, /* BigTIFF 64-bit signed integer */
+ TIFF_IFD8 = 18 /* BigTIFF 64-bit unsigned integer (offset) */
+} TIFFDataType;
+
+/*
+ * TIFF Tag Definitions.
+ */
+#define TIFFTAG_SUBFILETYPE 254 /* subfile data descriptor */
+#define FILETYPE_REDUCEDIMAGE 0x1 /* reduced resolution version */
+#define FILETYPE_PAGE 0x2 /* one page of many */
+#define FILETYPE_MASK 0x4 /* transparency mask */
+#define TIFFTAG_OSUBFILETYPE 255 /* +kind of data in subfile */
+#define OFILETYPE_IMAGE 1 /* full resolution image data */
+#define OFILETYPE_REDUCEDIMAGE 2 /* reduced size image data */
+#define OFILETYPE_PAGE 3 /* one page of many */
+#define TIFFTAG_IMAGEWIDTH 256 /* image width in pixels */
+#define TIFFTAG_IMAGELENGTH 257 /* image height in pixels */
+#define TIFFTAG_BITSPERSAMPLE 258 /* bits per channel (sample) */
+#define TIFFTAG_COMPRESSION 259 /* data compression technique */
+#define COMPRESSION_NONE 1 /* dump mode */
+#define COMPRESSION_CCITTRLE 2 /* CCITT modified Huffman RLE */
+#define COMPRESSION_CCITTFAX3 3 /* CCITT Group 3 fax encoding */
+#define COMPRESSION_CCITT_T4 3 /* CCITT T.4 (TIFF 6 name) */
+#define COMPRESSION_CCITTFAX4 4 /* CCITT Group 4 fax encoding */
+#define COMPRESSION_CCITT_T6 4 /* CCITT T.6 (TIFF 6 name) */
+#define COMPRESSION_LZW 5 /* Lempel-Ziv & Welch */
+#define COMPRESSION_OJPEG 6 /* !6.0 JPEG */
+#define COMPRESSION_JPEG 7 /* %JPEG DCT compression */
+#define COMPRESSION_T85 9 /* !TIFF/FX T.85 JBIG compression */
+#define COMPRESSION_T43 10 /* !TIFF/FX T.43 colour by layered JBIG compression */
+#define COMPRESSION_NEXT 32766 /* NeXT 2-bit RLE */
+#define COMPRESSION_CCITTRLEW 32771 /* #1 w/ word alignment */
+#define COMPRESSION_PACKBITS 32773 /* Macintosh RLE */
+#define COMPRESSION_THUNDERSCAN 32809 /* ThunderScan RLE */
+/* codes 32895-32898 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */
+#define COMPRESSION_IT8CTPAD 32895 /* IT8 CT w/padding */
+#define COMPRESSION_IT8LW 32896 /* IT8 Linework RLE */
+#define COMPRESSION_IT8MP 32897 /* IT8 Monochrome picture */
+#define COMPRESSION_IT8BL 32898 /* IT8 Binary line art */
+/* compression codes 32908-32911 are reserved for Pixar */
+#define COMPRESSION_PIXARFILM 32908 /* Pixar companded 10bit LZW */
+#define COMPRESSION_PIXARLOG 32909 /* Pixar companded 11bit ZIP */
+#define COMPRESSION_DEFLATE 32946 /* Deflate compression */
+#define COMPRESSION_ADOBE_DEFLATE 8 /* Deflate compression,
+ as recognized by Adobe */
+/* compression code 32947 is reserved for Oceana Matrix <dev@oceana.com> */
+#define COMPRESSION_DCS 32947 /* Kodak DCS encoding */
+#define COMPRESSION_JBIG 34661 /* ISO JBIG */
+#define COMPRESSION_SGILOG 34676 /* SGI Log Luminance RLE */
+#define COMPRESSION_SGILOG24 34677 /* SGI Log 24-bit packed */
+#define COMPRESSION_JP2000 34712 /* Leadtools JPEG2000 */
+#define COMPRESSION_LZMA 34925 /* LZMA2 */
+#define TIFFTAG_PHOTOMETRIC 262 /* photometric interpretation */
+#define PHOTOMETRIC_MINISWHITE 0 /* min value is white */
+#define PHOTOMETRIC_MINISBLACK 1 /* min value is black */
+#define PHOTOMETRIC_RGB 2 /* RGB color model */
+#define PHOTOMETRIC_PALETTE 3 /* color map indexed */
+#define PHOTOMETRIC_MASK 4 /* $holdout mask */
+#define PHOTOMETRIC_SEPARATED 5 /* !color separations */
+#define PHOTOMETRIC_YCBCR 6 /* !CCIR 601 */
+#define PHOTOMETRIC_CIELAB 8 /* !1976 CIE L*a*b* */
+#define PHOTOMETRIC_ICCLAB 9 /* ICC L*a*b* [Adobe TIFF Technote 4] */
+#define PHOTOMETRIC_ITULAB 10 /* ITU L*a*b* */
+#define PHOTOMETRIC_LOGL 32844 /* CIE Log2(L) */
+#define PHOTOMETRIC_LOGLUV 32845 /* CIE Log2(L) (u',v') */
+#define TIFFTAG_THRESHHOLDING 263 /* +thresholding used on data */
+#define THRESHHOLD_BILEVEL 1 /* b&w art scan */
+#define THRESHHOLD_HALFTONE 2 /* or dithered scan */
+#define THRESHHOLD_ERRORDIFFUSE 3 /* usually floyd-steinberg */
+#define TIFFTAG_CELLWIDTH 264 /* +dithering matrix width */
+#define TIFFTAG_CELLLENGTH 265 /* +dithering matrix height */
+#define TIFFTAG_FILLORDER 266 /* data order within a byte */
+#define FILLORDER_MSB2LSB 1 /* most significant -> least */
+#define FILLORDER_LSB2MSB 2 /* least significant -> most */
+#define TIFFTAG_DOCUMENTNAME 269 /* name of doc. image is from */
+#define TIFFTAG_IMAGEDESCRIPTION 270 /* info about image */
+#define TIFFTAG_MAKE 271 /* scanner manufacturer name */
+#define TIFFTAG_MODEL 272 /* scanner model name/number */
+#define TIFFTAG_STRIPOFFSETS 273 /* offsets to data strips */
+#define TIFFTAG_ORIENTATION 274 /* +image orientation */
+#define ORIENTATION_TOPLEFT 1 /* row 0 top, col 0 lhs */
+#define ORIENTATION_TOPRIGHT 2 /* row 0 top, col 0 rhs */
+#define ORIENTATION_BOTRIGHT 3 /* row 0 bottom, col 0 rhs */
+#define ORIENTATION_BOTLEFT 4 /* row 0 bottom, col 0 lhs */
+#define ORIENTATION_LEFTTOP 5 /* row 0 lhs, col 0 top */
+#define ORIENTATION_RIGHTTOP 6 /* row 0 rhs, col 0 top */
+#define ORIENTATION_RIGHTBOT 7 /* row 0 rhs, col 0 bottom */
+#define ORIENTATION_LEFTBOT 8 /* row 0 lhs, col 0 bottom */
+#define TIFFTAG_SAMPLESPERPIXEL 277 /* samples per pixel */
+#define TIFFTAG_ROWSPERSTRIP 278 /* rows per strip of data */
+#define TIFFTAG_STRIPBYTECOUNTS 279 /* bytes counts for strips */
+#define TIFFTAG_MINSAMPLEVALUE 280 /* +minimum sample value */
+#define TIFFTAG_MAXSAMPLEVALUE 281 /* +maximum sample value */
+#define TIFFTAG_XRESOLUTION 282 /* pixels/resolution in x */
+#define TIFFTAG_YRESOLUTION 283 /* pixels/resolution in y */
+#define TIFFTAG_PLANARCONFIG 284 /* storage organization */
+#define PLANARCONFIG_CONTIG 1 /* single image plane */
+#define PLANARCONFIG_SEPARATE 2 /* separate planes of data */
+#define TIFFTAG_PAGENAME 285 /* page name image is from */
+#define TIFFTAG_XPOSITION 286 /* x page offset of image lhs */
+#define TIFFTAG_YPOSITION 287 /* y page offset of image lhs */
+#define TIFFTAG_FREEOFFSETS 288 /* +byte offset to free block */
+#define TIFFTAG_FREEBYTECOUNTS 289 /* +sizes of free blocks */
+#define TIFFTAG_GRAYRESPONSEUNIT 290 /* $gray scale curve accuracy */
+#define GRAYRESPONSEUNIT_10S 1 /* tenths of a unit */
+#define GRAYRESPONSEUNIT_100S 2 /* hundredths of a unit */
+#define GRAYRESPONSEUNIT_1000S 3 /* thousandths of a unit */
+#define GRAYRESPONSEUNIT_10000S 4 /* ten-thousandths of a unit */
+#define GRAYRESPONSEUNIT_100000S 5 /* hundred-thousandths */
+#define TIFFTAG_GRAYRESPONSECURVE 291 /* $gray scale response curve */
+#define TIFFTAG_GROUP3OPTIONS 292 /* 32 flag bits */
+#define TIFFTAG_T4OPTIONS 292 /* TIFF 6.0 proper name alias */
+#define GROUP3OPT_2DENCODING 0x1 /* 2-dimensional coding */
+#define GROUP3OPT_UNCOMPRESSED 0x2 /* data not compressed */
+#define GROUP3OPT_FILLBITS 0x4 /* fill to byte boundary */
+#define TIFFTAG_GROUP4OPTIONS 293 /* 32 flag bits */
+#define TIFFTAG_T6OPTIONS 293 /* TIFF 6.0 proper name */
+#define GROUP4OPT_UNCOMPRESSED 0x2 /* data not compressed */
+#define TIFFTAG_RESOLUTIONUNIT 296 /* units of resolutions */
+#define RESUNIT_NONE 1 /* no meaningful units */
+#define RESUNIT_INCH 2 /* english */
+#define RESUNIT_CENTIMETER 3 /* metric */
+#define TIFFTAG_PAGENUMBER 297 /* page numbers of multi-page */
+#define TIFFTAG_COLORRESPONSEUNIT 300 /* $color curve accuracy */
+#define COLORRESPONSEUNIT_10S 1 /* tenths of a unit */
+#define COLORRESPONSEUNIT_100S 2 /* hundredths of a unit */
+#define COLORRESPONSEUNIT_1000S 3 /* thousandths of a unit */
+#define COLORRESPONSEUNIT_10000S 4 /* ten-thousandths of a unit */
+#define COLORRESPONSEUNIT_100000S 5 /* hundred-thousandths */
+#define TIFFTAG_TRANSFERFUNCTION 301 /* !colorimetry info */
+#define TIFFTAG_SOFTWARE 305 /* name & release */
+#define TIFFTAG_DATETIME 306 /* creation date and time */
+#define TIFFTAG_ARTIST 315 /* creator of image */
+#define TIFFTAG_HOSTCOMPUTER 316 /* machine where created */
+#define TIFFTAG_PREDICTOR 317 /* prediction scheme w/ LZW */
+#define PREDICTOR_NONE 1 /* no prediction scheme used */
+#define PREDICTOR_HORIZONTAL 2 /* horizontal differencing */
+#define PREDICTOR_FLOATINGPOINT 3 /* floating point predictor */
+#define TIFFTAG_WHITEPOINT 318 /* image white point */
+#define TIFFTAG_PRIMARYCHROMATICITIES 319 /* !primary chromaticities */
+#define TIFFTAG_COLORMAP 320 /* RGB map for pallette image */
+#define TIFFTAG_HALFTONEHINTS 321 /* !highlight+shadow info */
+#define TIFFTAG_TILEWIDTH 322 /* !tile width in pixels */
+#define TIFFTAG_TILELENGTH 323 /* !tile height in pixels */
+#define TIFFTAG_TILEOFFSETS 324 /* !offsets to data tiles */
+#define TIFFTAG_TILEBYTECOUNTS 325 /* !byte counts for tiles */
+#define TIFFTAG_BADFAXLINES 326 /* lines w/ wrong pixel count */
+#define TIFFTAG_CLEANFAXDATA 327 /* regenerated line info */
+#define CLEANFAXDATA_CLEAN 0 /* no errors detected */
+#define CLEANFAXDATA_REGENERATED 1 /* receiver regenerated lines */
+#define CLEANFAXDATA_UNCLEAN 2 /* uncorrected errors exist */
+#define TIFFTAG_CONSECUTIVEBADFAXLINES 328 /* max consecutive bad lines */
+#define TIFFTAG_SUBIFD 330 /* subimage descriptors */
+#define TIFFTAG_INKSET 332 /* !inks in separated image */
+#define INKSET_CMYK 1 /* !cyan-magenta-yellow-black color */
+#define INKSET_MULTIINK 2 /* !multi-ink or hi-fi color */
+#define TIFFTAG_INKNAMES 333 /* !ascii names of inks */
+#define TIFFTAG_NUMBEROFINKS 334 /* !number of inks */
+#define TIFFTAG_DOTRANGE 336 /* !0% and 100% dot codes */
+#define TIFFTAG_TARGETPRINTER 337 /* !separation target */
+#define TIFFTAG_EXTRASAMPLES 338 /* !info about extra samples */
+#define EXTRASAMPLE_UNSPECIFIED 0 /* !unspecified data */
+#define EXTRASAMPLE_ASSOCALPHA 1 /* !associated alpha data */
+#define EXTRASAMPLE_UNASSALPHA 2 /* !unassociated alpha data */
+#define TIFFTAG_SAMPLEFORMAT 339 /* !data sample format */
+#define SAMPLEFORMAT_UINT 1 /* !unsigned integer data */
+#define SAMPLEFORMAT_INT 2 /* !signed integer data */
+#define SAMPLEFORMAT_IEEEFP 3 /* !IEEE floating point data */
+#define SAMPLEFORMAT_VOID 4 /* !untyped data */
+#define SAMPLEFORMAT_COMPLEXINT 5 /* !complex signed int */
+#define SAMPLEFORMAT_COMPLEXIEEEFP 6 /* !complex ieee floating */
+#define TIFFTAG_SMINSAMPLEVALUE 340 /* !variable MinSampleValue */
+#define TIFFTAG_SMAXSAMPLEVALUE 341 /* !variable MaxSampleValue */
+#define TIFFTAG_CLIPPATH 343 /* %ClipPath
+ [Adobe TIFF technote 2] */
+#define TIFFTAG_XCLIPPATHUNITS 344 /* %XClipPathUnits
+ [Adobe TIFF technote 2] */
+#define TIFFTAG_YCLIPPATHUNITS 345 /* %YClipPathUnits
+ [Adobe TIFF technote 2] */
+#define TIFFTAG_INDEXED 346 /* %Indexed
+ [Adobe TIFF Technote 3] */
+#define TIFFTAG_JPEGTABLES 347 /* %JPEG table stream */
+#define TIFFTAG_OPIPROXY 351 /* %OPI Proxy [Adobe TIFF technote] */
+/* Tags 400-435 are from the TIFF/FX spec */
+#define TIFFTAG_GLOBALPARAMETERSIFD 400 /* ! */
+#define TIFFTAG_PROFILETYPE 401 /* ! */
+#define PROFILETYPE_UNSPECIFIED 0 /* ! */
+#define PROFILETYPE_G3_FAX 1 /* ! */
+#define TIFFTAG_FAXPROFILE 402 /* ! */
+#define FAXPROFILE_S 1 /* !TIFF/FX FAX profile S */
+#define FAXPROFILE_F 2 /* !TIFF/FX FAX profile F */
+#define FAXPROFILE_J 3 /* !TIFF/FX FAX profile J */
+#define FAXPROFILE_C 4 /* !TIFF/FX FAX profile C */
+#define FAXPROFILE_L 5 /* !TIFF/FX FAX profile L */
+#define FAXPROFILE_M 6 /* !TIFF/FX FAX profile LM */
+#define TIFFTAG_CODINGMETHODS 403 /* !TIFF/FX coding methods */
+#define CODINGMETHODS_T4_1D (1 << 1) /* !T.4 1D */
+#define CODINGMETHODS_T4_2D (1 << 2) /* !T.4 2D */
+#define CODINGMETHODS_T6 (1 << 3) /* !T.6 */
+#define CODINGMETHODS_T85 (1 << 4) /* !T.85 JBIG */
+#define CODINGMETHODS_T42 (1 << 5) /* !T.42 JPEG */
+#define CODINGMETHODS_T43 (1 << 6) /* !T.43 colour by layered JBIG */
+#define TIFFTAG_VERSIONYEAR 404 /* !TIFF/FX version year */
+#define TIFFTAG_MODENUMBER 405 /* !TIFF/FX mode number */
+#define TIFFTAG_DECODE 433 /* !TIFF/FX decode */
+#define TIFFTAG_IMAGEBASECOLOR 434 /* !TIFF/FX image base colour */
+#define TIFFTAG_T82OPTIONS 435 /* !TIFF/FX T.82 options */
+/*
+ * Tags 512-521 are obsoleted by Technical Note #2 which specifies a
+ * revised JPEG-in-TIFF scheme.
+ */
+#define TIFFTAG_JPEGPROC 512 /* !JPEG processing algorithm */
+#define JPEGPROC_BASELINE 1 /* !baseline sequential */
+#define JPEGPROC_LOSSLESS 14 /* !Huffman coded lossless */
+#define TIFFTAG_JPEGIFOFFSET 513 /* !pointer to SOI marker */
+#define TIFFTAG_JPEGIFBYTECOUNT 514 /* !JFIF stream length */
+#define TIFFTAG_JPEGRESTARTINTERVAL 515 /* !restart interval length */
+#define TIFFTAG_JPEGLOSSLESSPREDICTORS 517 /* !lossless proc predictor */
+#define TIFFTAG_JPEGPOINTTRANSFORM 518 /* !lossless point transform */
+#define TIFFTAG_JPEGQTABLES 519 /* !Q matrice offsets */
+#define TIFFTAG_JPEGDCTABLES 520 /* !DCT table offsets */
+#define TIFFTAG_JPEGACTABLES 521 /* !AC coefficient offsets */
+#define TIFFTAG_YCBCRCOEFFICIENTS 529 /* !RGB -> YCbCr transform */
+#define TIFFTAG_YCBCRSUBSAMPLING 530 /* !YCbCr subsampling factors */
+#define TIFFTAG_YCBCRPOSITIONING 531 /* !subsample positioning */
+#define YCBCRPOSITION_CENTERED 1 /* !as in PostScript Level 2 */
+#define YCBCRPOSITION_COSITED 2 /* !as in CCIR 601-1 */
+#define TIFFTAG_REFERENCEBLACKWHITE 532 /* !colorimetry info */
+#define TIFFTAG_STRIPROWCOUNTS 559 /* !TIFF/FX strip row counts */
+#define TIFFTAG_XMLPACKET 700 /* %XML packet
+ [Adobe XMP Specification,
+ January 2004 */
+#define TIFFTAG_OPIIMAGEID 32781 /* %OPI ImageID
+ [Adobe TIFF technote] */
+/* tags 32952-32956 are private tags registered to Island Graphics */
+#define TIFFTAG_REFPTS 32953 /* image reference points */
+#define TIFFTAG_REGIONTACKPOINT 32954 /* region-xform tack point */
+#define TIFFTAG_REGIONWARPCORNERS 32955 /* warp quadrilateral */
+#define TIFFTAG_REGIONAFFINE 32956 /* affine transformation mat */
+/* tags 32995-32999 are private tags registered to SGI */
+#define TIFFTAG_MATTEING 32995 /* $use ExtraSamples */
+#define TIFFTAG_DATATYPE 32996 /* $use SampleFormat */
+#define TIFFTAG_IMAGEDEPTH 32997 /* z depth of image */
+#define TIFFTAG_TILEDEPTH 32998 /* z depth/data tile */
+/* tags 33300-33309 are private tags registered to Pixar */
+/*
+ * TIFFTAG_PIXAR_IMAGEFULLWIDTH and TIFFTAG_PIXAR_IMAGEFULLLENGTH
+ * are set when an image has been cropped out of a larger image.
+ * They reflect the size of the original uncropped image.
+ * The TIFFTAG_XPOSITION and TIFFTAG_YPOSITION can be used
+ * to determine the position of the smaller image in the larger one.
+ */
+#define TIFFTAG_PIXAR_IMAGEFULLWIDTH 33300 /* full image size in x */
+#define TIFFTAG_PIXAR_IMAGEFULLLENGTH 33301 /* full image size in y */
+ /* Tags 33302-33306 are used to identify special image modes and data
+ * used by Pixar's texture formats.
+ */
+#define TIFFTAG_PIXAR_TEXTUREFORMAT 33302 /* texture map format */
+#define TIFFTAG_PIXAR_WRAPMODES 33303 /* s & t wrap modes */
+#define TIFFTAG_PIXAR_FOVCOT 33304 /* cotan(fov) for env. maps */
+#define TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN 33305
+#define TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA 33306
+/* tag 33405 is a private tag registered to Eastman Kodak */
+#define TIFFTAG_WRITERSERIALNUMBER 33405 /* device serial number */
+/* tag 33432 is listed in the 6.0 spec w/ unknown ownership */
+#define TIFFTAG_COPYRIGHT 33432 /* copyright string */
+/* IPTC TAG from RichTIFF specifications */
+#define TIFFTAG_RICHTIFFIPTC 33723
+/* 34016-34029 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */
+#define TIFFTAG_IT8SITE 34016 /* site name */
+#define TIFFTAG_IT8COLORSEQUENCE 34017 /* color seq. [RGB,CMYK,etc] */
+#define TIFFTAG_IT8HEADER 34018 /* DDES Header */
+#define TIFFTAG_IT8RASTERPADDING 34019 /* raster scanline padding */
+#define TIFFTAG_IT8BITSPERRUNLENGTH 34020 /* # of bits in short run */
+#define TIFFTAG_IT8BITSPEREXTENDEDRUNLENGTH 34021/* # of bits in long run */
+#define TIFFTAG_IT8COLORTABLE 34022 /* LW colortable */
+#define TIFFTAG_IT8IMAGECOLORINDICATOR 34023 /* BP/BL image color switch */
+#define TIFFTAG_IT8BKGCOLORINDICATOR 34024 /* BP/BL bg color switch */
+#define TIFFTAG_IT8IMAGECOLORVALUE 34025 /* BP/BL image color value */
+#define TIFFTAG_IT8BKGCOLORVALUE 34026 /* BP/BL bg color value */
+#define TIFFTAG_IT8PIXELINTENSITYRANGE 34027 /* MP pixel intensity value */
+#define TIFFTAG_IT8TRANSPARENCYINDICATOR 34028 /* HC transparency switch */
+#define TIFFTAG_IT8COLORCHARACTERIZATION 34029 /* color character. table */
+#define TIFFTAG_IT8HCUSAGE 34030 /* HC usage indicator */
+#define TIFFTAG_IT8TRAPINDICATOR 34031 /* Trapping indicator
+ (untrapped=0, trapped=1) */
+#define TIFFTAG_IT8CMYKEQUIVALENT 34032 /* CMYK color equivalents */
+/* tags 34232-34236 are private tags registered to Texas Instruments */
+#define TIFFTAG_FRAMECOUNT 34232 /* Sequence Frame Count */
+/* tag 34377 is private tag registered to Adobe for PhotoShop */
+#define TIFFTAG_PHOTOSHOP 34377
+/* tags 34665, 34853 and 40965 are documented in EXIF specification */
+#define TIFFTAG_EXIFIFD 34665 /* Pointer to EXIF private directory */
+/* tag 34750 is a private tag registered to Adobe? */
+#define TIFFTAG_ICCPROFILE 34675 /* ICC profile data */
+#define TIFFTAG_IMAGELAYER 34732 /* !TIFF/FX image layer information */
+/* tag 34750 is a private tag registered to Pixel Magic */
+#define TIFFTAG_JBIGOPTIONS 34750 /* JBIG options */
+#define TIFFTAG_GPSIFD 34853 /* Pointer to GPS private directory */
+/* tags 34908-34914 are private tags registered to SGI */
+#define TIFFTAG_FAXRECVPARAMS 34908 /* encoded Class 2 ses. parms */
+#define TIFFTAG_FAXSUBADDRESS 34909 /* received SubAddr string */
+#define TIFFTAG_FAXRECVTIME 34910 /* receive time (secs) */
+#define TIFFTAG_FAXDCS 34911 /* encoded fax ses. params, Table 2/T.30 */
+/* tags 37439-37443 are registered to SGI <gregl@sgi.com> */
+#define TIFFTAG_STONITS 37439 /* Sample value to Nits */
+/* tag 34929 is a private tag registered to FedEx */
+#define TIFFTAG_FEDEX_EDR 34929 /* unknown use */
+#define TIFFTAG_INTEROPERABILITYIFD 40965 /* Pointer to Interoperability private directory */
+/* Adobe Digital Negative (DNG) format tags */
+#define TIFFTAG_DNGVERSION 50706 /* &DNG version number */
+#define TIFFTAG_DNGBACKWARDVERSION 50707 /* &DNG compatibility version */
+#define TIFFTAG_UNIQUECAMERAMODEL 50708 /* &name for the camera model */
+#define TIFFTAG_LOCALIZEDCAMERAMODEL 50709 /* &localized camera model
+ name */
+#define TIFFTAG_CFAPLANECOLOR 50710 /* &CFAPattern->LinearRaw space
+ mapping */
+#define TIFFTAG_CFALAYOUT 50711 /* &spatial layout of the CFA */
+#define TIFFTAG_LINEARIZATIONTABLE 50712 /* &lookup table description */
+#define TIFFTAG_BLACKLEVELREPEATDIM 50713 /* &repeat pattern size for
+ the BlackLevel tag */
+#define TIFFTAG_BLACKLEVEL 50714 /* &zero light encoding level */
+#define TIFFTAG_BLACKLEVELDELTAH 50715 /* &zero light encoding level
+ differences (columns) */
+#define TIFFTAG_BLACKLEVELDELTAV 50716 /* &zero light encoding level
+ differences (rows) */
+#define TIFFTAG_WHITELEVEL 50717 /* &fully saturated encoding
+ level */
+#define TIFFTAG_DEFAULTSCALE 50718 /* &default scale factors */
+#define TIFFTAG_DEFAULTCROPORIGIN 50719 /* &origin of the final image
+ area */
+#define TIFFTAG_DEFAULTCROPSIZE 50720 /* &size of the final image
+ area */
+#define TIFFTAG_COLORMATRIX1 50721 /* &XYZ->reference color space
+ transformation matrix 1 */
+#define TIFFTAG_COLORMATRIX2 50722 /* &XYZ->reference color space
+ transformation matrix 2 */
+#define TIFFTAG_CAMERACALIBRATION1 50723 /* &calibration matrix 1 */
+#define TIFFTAG_CAMERACALIBRATION2 50724 /* &calibration matrix 2 */
+#define TIFFTAG_REDUCTIONMATRIX1 50725 /* &dimensionality reduction
+ matrix 1 */
+#define TIFFTAG_REDUCTIONMATRIX2 50726 /* &dimensionality reduction
+ matrix 2 */
+#define TIFFTAG_ANALOGBALANCE 50727 /* &gain applied the stored raw
+ values*/
+#define TIFFTAG_ASSHOTNEUTRAL 50728 /* &selected white balance in
+ linear reference space */
+#define TIFFTAG_ASSHOTWHITEXY 50729 /* &selected white balance in
+ x-y chromaticity
+ coordinates */
+#define TIFFTAG_BASELINEEXPOSURE 50730 /* &how much to move the zero
+ point */
+#define TIFFTAG_BASELINENOISE 50731 /* &relative noise level */
+#define TIFFTAG_BASELINESHARPNESS 50732 /* &relative amount of
+ sharpening */
+#define TIFFTAG_BAYERGREENSPLIT 50733 /* &how closely the values of
+ the green pixels in the
+ blue/green rows track the
+ values of the green pixels
+ in the red/green rows */
+#define TIFFTAG_LINEARRESPONSELIMIT 50734 /* &non-linear encoding range */
+#define TIFFTAG_CAMERASERIALNUMBER 50735 /* &camera's serial number */
+#define TIFFTAG_LENSINFO 50736 /* info about the lens */
+#define TIFFTAG_CHROMABLURRADIUS 50737 /* &chroma blur radius */
+#define TIFFTAG_ANTIALIASSTRENGTH 50738 /* &relative strength of the
+ camera's anti-alias filter */
+#define TIFFTAG_SHADOWSCALE 50739 /* &used by Adobe Camera Raw */
+#define TIFFTAG_DNGPRIVATEDATA 50740 /* &manufacturer's private data */
+#define TIFFTAG_MAKERNOTESAFETY 50741 /* &whether the EXIF MakerNote
+ tag is safe to preserve
+ along with the rest of the
+ EXIF data */
+#define TIFFTAG_CALIBRATIONILLUMINANT1 50778 /* &illuminant 1 */
+#define TIFFTAG_CALIBRATIONILLUMINANT2 50779 /* &illuminant 2 */
+#define TIFFTAG_BESTQUALITYSCALE 50780 /* &best quality multiplier */
+#define TIFFTAG_RAWDATAUNIQUEID 50781 /* &unique identifier for
+ the raw image data */
+#define TIFFTAG_ORIGINALRAWFILENAME 50827 /* &file name of the original
+ raw file */
+#define TIFFTAG_ORIGINALRAWFILEDATA 50828 /* &contents of the original
+ raw file */
+#define TIFFTAG_ACTIVEAREA 50829 /* &active (non-masked) pixels
+ of the sensor */
+#define TIFFTAG_MASKEDAREAS 50830 /* &list of coordinates
+ of fully masked pixels */
+#define TIFFTAG_ASSHOTICCPROFILE 50831 /* &these two tags used to */
+#define TIFFTAG_ASSHOTPREPROFILEMATRIX 50832 /* map cameras's color space
+ into ICC profile space */
+#define TIFFTAG_CURRENTICCPROFILE 50833 /* & */
+#define TIFFTAG_CURRENTPREPROFILEMATRIX 50834 /* & */
+/* tag 65535 is an undefined tag used by Eastman Kodak */
+#define TIFFTAG_DCSHUESHIFTVALUES 65535 /* hue shift correction data */
+
+/*
+ * The following are ``pseudo tags'' that can be used to control
+ * codec-specific functionality. These tags are not written to file.
+ * Note that these values start at 0xffff+1 so that they'll never
+ * collide with Aldus-assigned tags.
+ *
+ * If you want your private pseudo tags ``registered'' (i.e. added to
+ * this file), please post a bug report via the tracking system at
+ * http://www.remotesensing.org/libtiff/bugs.html with the appropriate
+ * C definitions to add.
+ */
+#define TIFFTAG_FAXMODE 65536 /* Group 3/4 format control */
+#define FAXMODE_CLASSIC 0x0000 /* default, include RTC */
+#define FAXMODE_NORTC 0x0001 /* no RTC at end of data */
+#define FAXMODE_NOEOL 0x0002 /* no EOL code at end of row */
+#define FAXMODE_BYTEALIGN 0x0004 /* byte align row */
+#define FAXMODE_WORDALIGN 0x0008 /* word align row */
+#define FAXMODE_CLASSF FAXMODE_NORTC /* TIFF Class F */
+#define TIFFTAG_JPEGQUALITY 65537 /* Compression quality level */
+/* Note: quality level is on the IJG 0-100 scale. Default value is 75 */
+#define TIFFTAG_JPEGCOLORMODE 65538 /* Auto RGB<=>YCbCr convert? */
+#define JPEGCOLORMODE_RAW 0x0000 /* no conversion (default) */
+#define JPEGCOLORMODE_RGB 0x0001 /* do auto conversion */
+#define TIFFTAG_JPEGTABLESMODE 65539 /* What to put in JPEGTables */
+#define JPEGTABLESMODE_QUANT 0x0001 /* include quantization tbls */
+#define JPEGTABLESMODE_HUFF 0x0002 /* include Huffman tbls */
+/* Note: default is JPEGTABLESMODE_QUANT | JPEGTABLESMODE_HUFF */
+#define TIFFTAG_FAXFILLFUNC 65540 /* G3/G4 fill function */
+#define TIFFTAG_PIXARLOGDATAFMT 65549 /* PixarLogCodec I/O data sz */
+#define PIXARLOGDATAFMT_8BIT 0 /* regular u_char samples */
+#define PIXARLOGDATAFMT_8BITABGR 1 /* ABGR-order u_chars */
+#define PIXARLOGDATAFMT_11BITLOG 2 /* 11-bit log-encoded (raw) */
+#define PIXARLOGDATAFMT_12BITPICIO 3 /* as per PICIO (1.0==2048) */
+#define PIXARLOGDATAFMT_16BIT 4 /* signed short samples */
+#define PIXARLOGDATAFMT_FLOAT 5 /* IEEE float samples */
+/* 65550-65556 are allocated to Oceana Matrix <dev@oceana.com> */
+#define TIFFTAG_DCSIMAGERTYPE 65550 /* imager model & filter */
+#define DCSIMAGERMODEL_M3 0 /* M3 chip (1280 x 1024) */
+#define DCSIMAGERMODEL_M5 1 /* M5 chip (1536 x 1024) */
+#define DCSIMAGERMODEL_M6 2 /* M6 chip (3072 x 2048) */
+#define DCSIMAGERFILTER_IR 0 /* infrared filter */
+#define DCSIMAGERFILTER_MONO 1 /* monochrome filter */
+#define DCSIMAGERFILTER_CFA 2 /* color filter array */
+#define DCSIMAGERFILTER_OTHER 3 /* other filter */
+#define TIFFTAG_DCSINTERPMODE 65551 /* interpolation mode */
+#define DCSINTERPMODE_NORMAL 0x0 /* whole image, default */
+#define DCSINTERPMODE_PREVIEW 0x1 /* preview of image (384x256) */
+#define TIFFTAG_DCSBALANCEARRAY 65552 /* color balance values */
+#define TIFFTAG_DCSCORRECTMATRIX 65553 /* color correction values */
+#define TIFFTAG_DCSGAMMA 65554 /* gamma value */
+#define TIFFTAG_DCSTOESHOULDERPTS 65555 /* toe & shoulder points */
+#define TIFFTAG_DCSCALIBRATIONFD 65556 /* calibration file desc */
+/* Note: quality level is on the ZLIB 1-9 scale. Default value is -1 */
+#define TIFFTAG_ZIPQUALITY 65557 /* compression quality level */
+#define TIFFTAG_PIXARLOGQUALITY 65558 /* PixarLog uses same scale */
+/* 65559 is allocated to Oceana Matrix <dev@oceana.com> */
+#define TIFFTAG_DCSCLIPRECTANGLE 65559 /* area of image to acquire */
+#define TIFFTAG_SGILOGDATAFMT 65560 /* SGILog user data format */
+#define SGILOGDATAFMT_FLOAT 0 /* IEEE float samples */
+#define SGILOGDATAFMT_16BIT 1 /* 16-bit samples */
+#define SGILOGDATAFMT_RAW 2 /* uninterpreted data */
+#define SGILOGDATAFMT_8BIT 3 /* 8-bit RGB monitor values */
+#define TIFFTAG_SGILOGENCODE 65561 /* SGILog data encoding control*/
+#define SGILOGENCODE_NODITHER 0 /* do not dither encoded values*/
+#define SGILOGENCODE_RANDITHER 1 /* randomly dither encd values */
+#define TIFFTAG_LZMAPRESET 65562 /* LZMA2 preset (compression level) */
+#define TIFFTAG_PERSAMPLE 65563 /* interface for per sample tags */
+#define PERSAMPLE_MERGED 0 /* present as a single value */
+#define PERSAMPLE_MULTI 1 /* present as multiple values */
+
+/*
+ * EXIF tags
+ */
+#define EXIFTAG_EXPOSURETIME 33434 /* Exposure time */
+#define EXIFTAG_FNUMBER 33437 /* F number */
+#define EXIFTAG_EXPOSUREPROGRAM 34850 /* Exposure program */
+#define EXIFTAG_SPECTRALSENSITIVITY 34852 /* Spectral sensitivity */
+#define EXIFTAG_ISOSPEEDRATINGS 34855 /* ISO speed rating */
+#define EXIFTAG_OECF 34856 /* Optoelectric conversion
+ factor */
+#define EXIFTAG_EXIFVERSION 36864 /* Exif version */
+#define EXIFTAG_DATETIMEORIGINAL 36867 /* Date and time of original
+ data generation */
+#define EXIFTAG_DATETIMEDIGITIZED 36868 /* Date and time of digital
+ data generation */
+#define EXIFTAG_COMPONENTSCONFIGURATION 37121 /* Meaning of each component */
+#define EXIFTAG_COMPRESSEDBITSPERPIXEL 37122 /* Image compression mode */
+#define EXIFTAG_SHUTTERSPEEDVALUE 37377 /* Shutter speed */
+#define EXIFTAG_APERTUREVALUE 37378 /* Aperture */
+#define EXIFTAG_BRIGHTNESSVALUE 37379 /* Brightness */
+#define EXIFTAG_EXPOSUREBIASVALUE 37380 /* Exposure bias */
+#define EXIFTAG_MAXAPERTUREVALUE 37381 /* Maximum lens aperture */
+#define EXIFTAG_SUBJECTDISTANCE 37382 /* Subject distance */
+#define EXIFTAG_METERINGMODE 37383 /* Metering mode */
+#define EXIFTAG_LIGHTSOURCE 37384 /* Light source */
+#define EXIFTAG_FLASH 37385 /* Flash */
+#define EXIFTAG_FOCALLENGTH 37386 /* Lens focal length */
+#define EXIFTAG_SUBJECTAREA 37396 /* Subject area */
+#define EXIFTAG_MAKERNOTE 37500 /* Manufacturer notes */
+#define EXIFTAG_USERCOMMENT 37510 /* User comments */
+#define EXIFTAG_SUBSECTIME 37520 /* DateTime subseconds */
+#define EXIFTAG_SUBSECTIMEORIGINAL 37521 /* DateTimeOriginal subseconds */
+#define EXIFTAG_SUBSECTIMEDIGITIZED 37522 /* DateTimeDigitized subseconds */
+#define EXIFTAG_FLASHPIXVERSION 40960 /* Supported Flashpix version */
+#define EXIFTAG_COLORSPACE 40961 /* Color space information */
+#define EXIFTAG_PIXELXDIMENSION 40962 /* Valid image width */
+#define EXIFTAG_PIXELYDIMENSION 40963 /* Valid image height */
+#define EXIFTAG_RELATEDSOUNDFILE 40964 /* Related audio file */
+#define EXIFTAG_FLASHENERGY 41483 /* Flash energy */
+#define EXIFTAG_SPATIALFREQUENCYRESPONSE 41484 /* Spatial frequency response */
+#define EXIFTAG_FOCALPLANEXRESOLUTION 41486 /* Focal plane X resolution */
+#define EXIFTAG_FOCALPLANEYRESOLUTION 41487 /* Focal plane Y resolution */
+#define EXIFTAG_FOCALPLANERESOLUTIONUNIT 41488 /* Focal plane resolution unit */
+#define EXIFTAG_SUBJECTLOCATION 41492 /* Subject location */
+#define EXIFTAG_EXPOSUREINDEX 41493 /* Exposure index */
+#define EXIFTAG_SENSINGMETHOD 41495 /* Sensing method */
+#define EXIFTAG_FILESOURCE 41728 /* File source */
+#define EXIFTAG_SCENETYPE 41729 /* Scene type */
+#define EXIFTAG_CFAPATTERN 41730 /* CFA pattern */
+#define EXIFTAG_CUSTOMRENDERED 41985 /* Custom image processing */
+#define EXIFTAG_EXPOSUREMODE 41986 /* Exposure mode */
+#define EXIFTAG_WHITEBALANCE 41987 /* White balance */
+#define EXIFTAG_DIGITALZOOMRATIO 41988 /* Digital zoom ratio */
+#define EXIFTAG_FOCALLENGTHIN35MMFILM 41989 /* Focal length in 35 mm film */
+#define EXIFTAG_SCENECAPTURETYPE 41990 /* Scene capture type */
+#define EXIFTAG_GAINCONTROL 41991 /* Gain control */
+#define EXIFTAG_CONTRAST 41992 /* Contrast */
+#define EXIFTAG_SATURATION 41993 /* Saturation */
+#define EXIFTAG_SHARPNESS 41994 /* Sharpness */
+#define EXIFTAG_DEVICESETTINGDESCRIPTION 41995 /* Device settings description */
+#define EXIFTAG_SUBJECTDISTANCERANGE 41996 /* Subject distance range */
+#define EXIFTAG_GAINCONTROL 41991 /* Gain control */
+#define EXIFTAG_GAINCONTROL 41991 /* Gain control */
+#define EXIFTAG_IMAGEUNIQUEID 42016 /* Unique image ID */
+
+#endif /* _TIFF_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tiffconf.h b/core/src/fxcodec/fx_tiff/tiff_v403/tiffconf.h
new file mode 100644
index 0000000..3ca425c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tiffconf.h
@@ -0,0 +1,250 @@
+/* libtiff/tiffconf.h. Generated by configure. */
+/*
+ Configuration defines for installed libtiff.
+ This file maintained for backward compatibility. Do not use definitions
+ from this file in your programs.
+*/
+#ifndef _TIFFCONF_
+#define _TIFFCONF_
+
+#ifndef _FX_SYSTEM_H_
+# include "../../../../include/fxcrt/fx_system.h"
+#endif
+
+//NOTE: The tiff codec requires an ANSI C compiler environment for building and
+// presumes an ANSI C environment for use.
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+/* Define to 1 if you have the <sys/types.h> header file. */
+#if _FX_OS_ == _FX_WIN32_MOBILE_
+# define O_RDONLY 0x0000 /* open for reading only */
+# define O_WRONLY 0x0001 /* open for writing only */
+# define O_RDWR 0x0002 /* open for reading and writing */
+# define O_CREAT 0x0100 /* create and open file */
+# define O_TRUNC 0x0200 /* open and truncate */
+#else
+# define HAVE_SYS_TYPES_H 1
+# define HAVE_FCNTL_H 1
+#endif
+
+/* Compatibility stuff. */
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define as 0 or 1 according to the floating point format suported by the
+ machine */
+#define HAVE_IEEEFP 1
+
+/* Define to 1 if you have the <string.h> header file. */
+//#define HAVE_STRING_H 1
+//fx_system.h already include the string.h in ANSIC
+
+/* Define to 1 if you have the <search.h> header file. */
+/*#define HAVE_SEARCH_H 1 */
+
+/* The size of a `int', as computed by sizeof. */
+/* According typedef int FX_INT32; in the fx_system.h*/
+#define SIZEOF_INT 4
+
+/* Sunliang.Liu 20110325. We should config the correct long size for tif
+ fax4decode optimize in tif_fax3.c -- Linux64 decode issue.
+ TESTDOC: Bug #23661 - z1.tif. */
+#if _FX_CPU_ == _FX_WIN64_ || _FX_CPU_ == _FX_X64_ || _FX_CPU_ == _FX_IA64_
+/* The size of `unsigned long', as computed by sizeof. */
+#define SIZEOF_UNSIGNED_LONG 8
+#else
+#define SIZEOF_UNSIGNED_LONG 4
+#endif
+
+/* Signed 8-bit type */
+#define TIFF_INT8_T signed char
+
+/* Unsigned 8-bit type */
+#define TIFF_UINT8_T unsigned char
+
+/* Signed 16-bit type */
+#define TIFF_INT16_T signed short
+
+/* Unsigned 16-bit type */
+#define TIFF_UINT16_T unsigned short
+
+/* Signed 32-bit type */
+#define TIFF_INT32_T signed int
+
+/* Unsigned 32-bit type */
+#define TIFF_UINT32_T unsigned int
+
+/* Signed 32-bit type formatter */
+#define TIFF_INT32_FORMAT "%d"
+
+/* Unsigned 32-bit type formatter */
+#define TIFF_UINT32_FORMAT "%u"
+
+#ifdef _MSC_VER // windows
+
+/* Signed 64-bit type formatter */
+#define TIFF_INT64_FORMAT "%I64d"
+
+/* Unsigned 64-bit type formatter */
+#define TIFF_UINT64_FORMAT "%I64u"
+
+/* Signed 64-bit type */
+#define TIFF_INT64_T signed __int64
+
+/* Unsigned 64-bit type */
+#define TIFF_UINT64_T unsigned __int64
+
+#else // linux/unix
+
+#if 0 //_FX_CPU_ == _FX_X64_ // linux/unix 64
+
+/* Signed 64-bit type formatter */
+#define TIFF_INT64_FORMAT "%ld"
+
+/* Unsigned 64-bit type formatter */
+#define TIFF_UINT64_FORMAT "%lu"
+
+/* Signed 64-bit type */
+#define TIFF_INT64_T signed long
+
+#else // linux/unix 32
+
+/* Signed 64-bit type formatter */
+#define TIFF_INT64_FORMAT "%lld"
+
+/* Unsigned 64-bit type formatter */
+#define TIFF_UINT64_FORMAT "%llu"
+
+/* Signed 64-bit type */
+#define TIFF_INT64_T signed long long
+
+#endif // end _FX_CPU_
+
+/* Unsigned 64-bit type */
+#define TIFF_UINT64_T unsigned long long
+
+#endif
+
+
+/* Signed size type */
+#ifdef _MSC_VER
+
+#if defined(_WIN64)
+#define TIFF_SSIZE_T signed __int64
+#else
+#define TIFF_SSIZE_T signed int
+#endif
+
+#else
+
+#define TIFF_SSIZE_T signed long
+
+#endif
+
+/* Signed size type formatter */
+#if defined(_WIN64)
+#define TIFF_SSIZE_FORMAT "%I64d"
+#else
+#define TIFF_SSIZE_FORMAT "%ld"
+#endif
+
+/* Pointer difference type */
+#ifdef _MSC_VER
+#define TIFF_PTRDIFF_T long
+#else
+#define TIFF_PTRDIFF_T ptrdiff_t
+#endif
+
+/* Signed 64-bit type */
+/*#define TIFF_INT64_T signed __int64*/
+
+/* Unsigned 64-bit type */
+/*#define TIFF_UINT64_T unsigned __int64*/
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+ calls it, or to nothing if 'inline' is not supported under any name. */
+#ifndef __cplusplus
+# ifndef inline
+# define inline __inline
+# endif
+#endif
+
+#define lfind _lfind
+
+#define BSDTYPES
+
+/* Set the native cpu bit order (FILLORDER_LSB2MSB or FILLORDER_MSB2LSB) */
+#define HOST_FILLORDER FILLORDER_LSB2MSB
+
+/* Native cpu byte order: 1 if big-endian (Motorola) or 0 if little-endian
+ (Intel) */
+#if _FX_ENDIAN_ == _FX_BIG_ENDIAN_
+# define HOST_BIGENDIAN 1
+#else
+# define HOST_BIGENDIAN 0
+#endif
+
+/* Support CCITT Group 3 & 4 algorithms */
+#define CCITT_SUPPORT 1
+
+/* Support JPEG compression (requires IJG JPEG library) */
+#define JPEG_SUPPORT 1
+
+/* Support LogLuv high dynamic range encoding */
+#define LOGLUV_SUPPORT 1
+
+/* Support LZW algorithm */
+#define LZW_SUPPORT 1
+
+/* Support NeXT 2-bit RLE algorithm */
+#define NEXT_SUPPORT 1
+
+/* Support Old JPEG compresson (read contrib/ojpeg/README first! Compilation
+ fails with unpatched IJG JPEG library) */
+#define OJPEG_SUPPORT 1
+
+/* Support Macintosh PackBits algorithm */
+#define PACKBITS_SUPPORT 1
+
+/* Support Pixar log-format algorithm (requires Zlib) */
+#define PIXARLOG_SUPPORT 1
+
+/* Support ThunderScan 4-bit RLE algorithm */
+#define THUNDER_SUPPORT 1
+
+/* Support Deflate compression */
+#define ZIP_SUPPORT 1
+
+/* Support strip chopping (whether or not to convert single-strip uncompressed
+ images to mutiple strips of ~8Kb to reduce memory usage) */
+#define STRIPCHOP_DEFAULT TIFF_STRIPCHOP
+
+/* Enable SubIFD tag (330) support */
+#define SUBIFD_SUPPORT 1
+
+/* Treat extra sample as alpha (default enabled). The RGBA interface will
+ treat a fourth sample with no EXTRASAMPLE_ value as being ASSOCALPHA. Many
+ packages produce RGBA files but don't mark the alpha properly. */
+#define DEFAULT_EXTRASAMPLE_AS_ALPHA 1
+
+/* Pick up YCbCr subsampling info from the JPEG data stream to support files
+ lacking the tag (default enabled). */
+#define CHECK_JPEG_YCBCR_SUBSAMPLING 1
+
+/* Support MS MDI magic number files as TIFF */
+#define MDI_SUPPORT 1
+
+/*
+ * Feature support definitions.
+ * XXX: These macros are obsoleted. Don't use them in your apps!
+ * Macros stays here for backward compatibility and should be always defined.
+ */
+#define COLORIMETRY_SUPPORT
+#define YCBCR_SUPPORT
+#define CMYK_SUPPORT
+#define ICC_SUPPORT
+#define PHOTOSHOP_SUPPORT
+#define IPTC_SUPPORT
+
+#endif /* _TIFFCONF_ */
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tiffio.h b/core/src/fxcodec/fx_tiff/tiff_v403/tiffio.h
new file mode 100644
index 0000000..4c749ed
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tiffio.h
@@ -0,0 +1,559 @@
+/* $Id: tiffio.h,v 1.91 2012-07-29 15:45:29 tgl Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFIO_
+#define _TIFFIO_
+
+/*
+ * TIFF I/O Library Definitions.
+ */
+#include "tiff.h"
+#include "tiffvers.h"
+
+/*
+ * TIFF is defined as an incomplete type to hide the
+ * library's internal data structures from clients.
+ */
+typedef struct tiff TIFF;
+
+/*
+ * The following typedefs define the intrinsic size of
+ * data types used in the *exported* interfaces. These
+ * definitions depend on the proper definition of types
+ * in tiff.h. Note also that the varargs interface used
+ * to pass tag types and values uses the types defined in
+ * tiff.h directly.
+ *
+ * NB: ttag_t is unsigned int and not unsigned short because
+ * ANSI C requires that the type before the ellipsis be a
+ * promoted type (i.e. one of int, unsigned int, pointer,
+ * or double) and because we defined pseudo-tags that are
+ * outside the range of legal Aldus-assigned tags.
+ * NB: tsize_t is int32 and not uint32 because some functions
+ * return -1.
+ * NB: toff_t is not off_t for many reasons; TIFFs max out at
+ * 32-bit file offsets, and BigTIFF maxes out at 64-bit
+ * offsets being the most important, and to ensure use of
+ * a consistently unsigned type across architectures.
+ * Prior to libtiff 4.0, this was an unsigned 32 bit type.
+ */
+/*
+ * this is the machine addressing size type, only it's signed, so make it
+ * int32 on 32bit machines, int64 on 64bit machines
+ */
+typedef TIFF_SSIZE_T tmsize_t;
+typedef uint64 toff_t; /* file offset */
+/* the following are deprecated and should be replaced by their defining
+ counterparts */
+typedef uint32 ttag_t; /* directory tag */
+typedef uint16 tdir_t; /* directory index */
+typedef uint16 tsample_t; /* sample number */
+typedef uint32 tstrile_t; /* strip or tile number */
+typedef tstrile_t tstrip_t; /* strip number */
+typedef tstrile_t ttile_t; /* tile number */
+typedef tmsize_t tsize_t; /* i/o size in bytes */
+typedef void* tdata_t; /* image data ref */
+
+#if !defined(__WIN32__) && (defined(_WIN32) || defined(WIN32))
+#define __WIN32__
+#endif
+
+/*
+ * On windows you should define USE_WIN32_FILEIO if you are using tif_win32.c
+ * or AVOID_WIN32_FILEIO if you are using something else (like tif_unix.c).
+ *
+ * By default tif_unix.c is assumed.
+ */
+
+#if defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows)
+# if !defined(__CYGWIN) && !defined(AVOID_WIN32_FILEIO) && !defined(USE_WIN32_FILEIO)
+# define AVOID_WIN32_FILEIO
+# endif
+#endif
+
+#if defined(USE_WIN32_FILEIO)
+# define VC_EXTRALEAN
+# include <windows.h>
+# ifdef __WIN32__
+DECLARE_HANDLE(thandle_t); /* Win32 file handle */
+# else
+typedef HFILE thandle_t; /* client data handle */
+# endif /* __WIN32__ */
+#else
+typedef void* thandle_t; /* client data handle */
+#endif /* USE_WIN32_FILEIO */
+
+/*
+ * Flags to pass to TIFFPrintDirectory to control
+ * printing of data structures that are potentially
+ * very large. Bit-or these flags to enable printing
+ * multiple items.
+ */
+#define TIFFPRINT_NONE 0x0 /* no extra info */
+#define TIFFPRINT_STRIPS 0x1 /* strips/tiles info */
+#define TIFFPRINT_CURVES 0x2 /* color/gray response curves */
+#define TIFFPRINT_COLORMAP 0x4 /* colormap */
+#define TIFFPRINT_JPEGQTABLES 0x100 /* JPEG Q matrices */
+#define TIFFPRINT_JPEGACTABLES 0x200 /* JPEG AC tables */
+#define TIFFPRINT_JPEGDCTABLES 0x200 /* JPEG DC tables */
+
+/*
+ * Colour conversion stuff
+ */
+
+/* reference white */
+#define D65_X0 (95.0470F)
+#define D65_Y0 (100.0F)
+#define D65_Z0 (108.8827F)
+
+#define D50_X0 (96.4250F)
+#define D50_Y0 (100.0F)
+#define D50_Z0 (82.4680F)
+
+/* Structure for holding information about a display device. */
+
+typedef unsigned char TIFFRGBValue; /* 8-bit samples */
+
+typedef struct {
+ float d_mat[3][3]; /* XYZ -> luminance matrix */
+ float d_YCR; /* Light o/p for reference white */
+ float d_YCG;
+ float d_YCB;
+ uint32 d_Vrwr; /* Pixel values for ref. white */
+ uint32 d_Vrwg;
+ uint32 d_Vrwb;
+ float d_Y0R; /* Residual light for black pixel */
+ float d_Y0G;
+ float d_Y0B;
+ float d_gammaR; /* Gamma values for the three guns */
+ float d_gammaG;
+ float d_gammaB;
+} TIFFDisplay;
+
+typedef struct { /* YCbCr->RGB support */
+ TIFFRGBValue* clamptab; /* range clamping table */
+ int* Cr_r_tab;
+ int* Cb_b_tab;
+ int32* Cr_g_tab;
+ int32* Cb_g_tab;
+ int32* Y_tab;
+} TIFFYCbCrToRGB;
+
+typedef struct { /* CIE Lab 1976->RGB support */
+ int range; /* Size of conversion table */
+#define CIELABTORGB_TABLE_RANGE 1500
+ float rstep, gstep, bstep;
+ float X0, Y0, Z0; /* Reference white point */
+ TIFFDisplay display;
+ float Yr2r[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yr to r */
+ float Yg2g[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yg to g */
+ float Yb2b[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yb to b */
+} TIFFCIELabToRGB;
+
+/*
+ * RGBA-style image support.
+ */
+typedef struct _TIFFRGBAImage TIFFRGBAImage;
+/*
+ * The image reading and conversion routines invoke
+ * ``put routines'' to copy/image/whatever tiles of
+ * raw image data. A default set of routines are
+ * provided to convert/copy raw image data to 8-bit
+ * packed ABGR format rasters. Applications can supply
+ * alternate routines that unpack the data into a
+ * different format or, for example, unpack the data
+ * and draw the unpacked raster on the display.
+ */
+typedef void (*tileContigRoutine)
+ (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32,
+ unsigned char*);
+typedef void (*tileSeparateRoutine)
+ (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32,
+ unsigned char*, unsigned char*, unsigned char*, unsigned char*);
+/*
+ * RGBA-reader state.
+ */
+struct _TIFFRGBAImage {
+ TIFF* tif; /* image handle */
+ int stoponerr; /* stop on read error */
+ int isContig; /* data is packed/separate */
+ int alpha; /* type of alpha data present */
+ uint32 width; /* image width */
+ uint32 height; /* image height */
+ uint16 bitspersample; /* image bits/sample */
+ uint16 samplesperpixel; /* image samples/pixel */
+ uint16 orientation; /* image orientation */
+ uint16 req_orientation; /* requested orientation */
+ uint16 photometric; /* image photometric interp */
+ uint16* redcmap; /* colormap pallete */
+ uint16* greencmap;
+ uint16* bluecmap;
+ /* get image data routine */
+ int (*get)(TIFFRGBAImage*, uint32*, uint32, uint32);
+ /* put decoded strip/tile */
+ union {
+ void (*any)(TIFFRGBAImage*);
+ tileContigRoutine contig;
+ tileSeparateRoutine separate;
+ } put;
+ TIFFRGBValue* Map; /* sample mapping array */
+ uint32** BWmap; /* black&white map */
+ uint32** PALmap; /* palette image map */
+ TIFFYCbCrToRGB* ycbcr; /* YCbCr conversion state */
+ TIFFCIELabToRGB* cielab; /* CIE L*a*b conversion state */
+
+ uint8* UaToAa; /* Unassociated alpha to associated alpha convertion LUT */
+ uint8* Bitdepth16To8; /* LUT for conversion from 16bit to 8bit values */
+
+ int row_offset;
+ int col_offset;
+};
+
+/*
+ * Macros for extracting components from the
+ * packed ABGR form returned by TIFFReadRGBAImage.
+ */
+#define TIFFGetR(abgr) ((abgr) & 0xff)
+#define TIFFGetG(abgr) (((abgr) >> 8) & 0xff)
+#define TIFFGetB(abgr) (((abgr) >> 16) & 0xff)
+#define TIFFGetA(abgr) (((abgr) >> 24) & 0xff)
+
+/*
+ * A CODEC is a software package that implements decoding,
+ * encoding, or decoding+encoding of a compression algorithm.
+ * The library provides a collection of builtin codecs.
+ * More codecs may be registered through calls to the library
+ * and/or the builtin implementations may be overridden.
+ */
+typedef int (*TIFFInitMethod)(TIFF*, int);
+typedef struct {
+ char* name;
+ uint16 scheme;
+ TIFFInitMethod init;
+} TIFFCodec;
+
+#include <stdio.h>
+#include <stdarg.h>
+
+/* share internal LogLuv conversion routines? */
+#ifndef LOGLUV_PUBLIC
+#define LOGLUV_PUBLIC 1
+#endif
+
+#if !defined(__GNUC__) && !defined(__attribute__)
+# define __attribute__(x) /*nothing*/
+#endif
+
+#if defined(c_plusplus) || defined(__cplusplus)
+extern "C" {
+#endif
+typedef void (*TIFFErrorHandler)(const char*, const char*, va_list);
+typedef void (*TIFFErrorHandlerExt)(thandle_t, const char*, const char*, va_list);
+typedef tmsize_t (*TIFFReadWriteProc)(thandle_t, void*, tmsize_t);
+typedef toff_t (*TIFFSeekProc)(thandle_t, toff_t, int);
+typedef int (*TIFFCloseProc)(thandle_t);
+typedef toff_t (*TIFFSizeProc)(thandle_t);
+typedef int (*TIFFMapFileProc)(thandle_t, void** base, toff_t* size);
+typedef void (*TIFFUnmapFileProc)(thandle_t, void* base, toff_t size);
+typedef void (*TIFFExtendProc)(TIFF*);
+
+extern const char* TIFFGetVersion(void);
+
+extern const TIFFCodec* TIFFFindCODEC(uint16);
+extern TIFFCodec* TIFFRegisterCODEC(uint16, const char*, TIFFInitMethod);
+extern void TIFFUnRegisterCODEC(TIFFCodec*);
+extern int TIFFIsCODECConfigured(uint16);
+extern TIFFCodec* TIFFGetConfiguredCODECs(void);
+
+/*
+ * Auxiliary functions.
+ */
+
+extern void* _TIFFmalloc(tmsize_t s);
+extern void* _TIFFrealloc(void* p, tmsize_t s);
+extern void _TIFFmemset(void* p, int v, tmsize_t c);
+extern void _TIFFmemcpy(void* d, const void* s, tmsize_t c);
+extern int _TIFFmemcmp(const void* p1, const void* p2, tmsize_t c);
+extern void _TIFFfree(void* p);
+/* Do cmyk to rgb convert, add by Sunliang.Liu 20090723. */
+extern int TIFFCmyk2Rgb(thandle_t context, uint8 c, uint8 m, uint8 y, uint8 k, uint8* r, uint8* g, uint8* b);
+
+/*
+** Stuff, related to tag handling and creating custom tags.
+*/
+extern int TIFFGetTagListCount( TIFF * );
+extern uint32 TIFFGetTagListEntry( TIFF *, int tag_index );
+
+#define TIFF_ANY TIFF_NOTYPE /* for field descriptor searching */
+#define TIFF_VARIABLE -1 /* marker for variable length tags */
+#define TIFF_SPP -2 /* marker for SamplesPerPixel tags */
+#define TIFF_VARIABLE2 -3 /* marker for uint32 var-length tags */
+
+#define FIELD_CUSTOM 65
+
+typedef struct _TIFFField TIFFField;
+typedef struct _TIFFFieldArray TIFFFieldArray;
+
+extern const TIFFField* TIFFFindField(TIFF *, uint32, TIFFDataType);
+extern const TIFFField* TIFFFieldWithTag(TIFF*, uint32);
+extern const TIFFField* TIFFFieldWithName(TIFF*, const char *);
+
+extern uint32 TIFFFieldTag(const TIFFField*);
+extern const char* TIFFFieldName(const TIFFField*);
+extern TIFFDataType TIFFFieldDataType(const TIFFField*);
+extern int TIFFFieldPassCount(const TIFFField*);
+extern int TIFFFieldReadCount(const TIFFField*);
+extern int TIFFFieldWriteCount(const TIFFField*);
+
+typedef int (*TIFFVSetMethod)(TIFF*, uint32, va_list);
+typedef int (*TIFFVGetMethod)(TIFF*, uint32, va_list);
+typedef void (*TIFFPrintMethod)(TIFF*, FILE*, long);
+
+typedef struct {
+ TIFFVSetMethod vsetfield; /* tag set routine */
+ TIFFVGetMethod vgetfield; /* tag get routine */
+ TIFFPrintMethod printdir; /* directory print routine */
+} TIFFTagMethods;
+
+extern TIFFTagMethods *TIFFAccessTagMethods(TIFF *);
+extern void *TIFFGetClientInfo(TIFF *, const char *);
+extern void TIFFSetClientInfo(TIFF *, void *, const char *);
+
+extern void TIFFCleanup(TIFF* tif);
+extern void TIFFClose(TIFF* tif);
+extern int TIFFFlush(TIFF* tif);
+extern int TIFFFlushData(TIFF* tif);
+extern int TIFFGetField(TIFF* tif, uint32 tag, ...);
+extern int TIFFVGetField(TIFF* tif, uint32 tag, va_list ap);
+extern int TIFFGetFieldDefaulted(TIFF* tif, uint32 tag, ...);
+extern int TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap);
+extern int TIFFReadDirectory(TIFF* tif);
+extern int TIFFReadCustomDirectory(TIFF* tif, toff_t diroff, const TIFFFieldArray* infoarray);
+extern int TIFFReadEXIFDirectory(TIFF* tif, toff_t diroff);
+extern uint64 TIFFScanlineSize64(TIFF* tif);
+extern tmsize_t TIFFScanlineSize(TIFF* tif);
+extern uint64 TIFFRasterScanlineSize64(TIFF* tif);
+extern tmsize_t TIFFRasterScanlineSize(TIFF* tif);
+extern uint64 TIFFStripSize64(TIFF* tif);
+extern tmsize_t TIFFStripSize(TIFF* tif);
+extern uint64 TIFFRawStripSize64(TIFF* tif, uint32 strip);
+extern tmsize_t TIFFRawStripSize(TIFF* tif, uint32 strip);
+extern uint64 TIFFVStripSize64(TIFF* tif, uint32 nrows);
+extern tmsize_t TIFFVStripSize(TIFF* tif, uint32 nrows);
+extern uint64 TIFFTileRowSize64(TIFF* tif);
+extern tmsize_t TIFFTileRowSize(TIFF* tif);
+extern uint64 TIFFTileSize64(TIFF* tif);
+extern tmsize_t TIFFTileSize(TIFF* tif);
+extern uint64 TIFFVTileSize64(TIFF* tif, uint32 nrows);
+extern tmsize_t TIFFVTileSize(TIFF* tif, uint32 nrows);
+extern uint32 TIFFDefaultStripSize(TIFF* tif, uint32 request);
+extern void TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
+extern int TIFFFileno(TIFF*);
+extern int TIFFSetFileno(TIFF*, int);
+extern thandle_t TIFFClientdata(TIFF*);
+extern thandle_t TIFFSetClientdata(TIFF*, thandle_t);
+extern int TIFFGetMode(TIFF*);
+extern int TIFFSetMode(TIFF*, int);
+extern int TIFFIsTiled(TIFF*);
+extern int TIFFIsByteSwapped(TIFF*);
+extern int TIFFIsUpSampled(TIFF*);
+extern int TIFFIsMSB2LSB(TIFF*);
+extern int TIFFIsBigEndian(TIFF*);
+extern TIFFReadWriteProc TIFFGetReadProc(TIFF*);
+extern TIFFReadWriteProc TIFFGetWriteProc(TIFF*);
+extern TIFFSeekProc TIFFGetSeekProc(TIFF*);
+extern TIFFCloseProc TIFFGetCloseProc(TIFF*);
+extern TIFFSizeProc TIFFGetSizeProc(TIFF*);
+extern TIFFMapFileProc TIFFGetMapFileProc(TIFF*);
+extern TIFFUnmapFileProc TIFFGetUnmapFileProc(TIFF*);
+extern uint32 TIFFCurrentRow(TIFF*);
+extern uint16 TIFFCurrentDirectory(TIFF*);
+extern uint16 TIFFNumberOfDirectories(TIFF*);
+extern uint64 TIFFCurrentDirOffset(TIFF*);
+extern uint32 TIFFCurrentStrip(TIFF*);
+extern uint32 TIFFCurrentTile(TIFF* tif);
+extern int TIFFReadBufferSetup(TIFF* tif, void* bp, tmsize_t size);
+extern int TIFFWriteBufferSetup(TIFF* tif, void* bp, tmsize_t size);
+extern int TIFFSetupStrips(TIFF *);
+extern int TIFFWriteCheck(TIFF*, int, const char *);
+extern void TIFFFreeDirectory(TIFF*);
+extern int TIFFCreateDirectory(TIFF*);
+extern int TIFFCreateCustomDirectory(TIFF*,const TIFFFieldArray*);
+extern int TIFFCreateEXIFDirectory(TIFF*);
+extern int TIFFLastDirectory(TIFF*);
+extern int TIFFSetDirectory(TIFF*, uint16);
+extern int TIFFSetSubDirectory(TIFF*, uint64);
+extern int TIFFUnlinkDirectory(TIFF*, uint16);
+extern int TIFFSetField(TIFF*, uint32, ...);
+extern int TIFFVSetField(TIFF*, uint32, va_list);
+extern int TIFFUnsetField(TIFF*, uint32);
+extern int TIFFWriteDirectory(TIFF *);
+extern int TIFFWriteCustomDirectory(TIFF *, uint64 *);
+extern int TIFFCheckpointDirectory(TIFF *);
+extern int TIFFRewriteDirectory(TIFF *);
+
+#if defined(c_plusplus) || defined(__cplusplus)
+extern void TIFFPrintDirectory(TIFF*, FILE*, long = 0);
+extern int TIFFReadScanline(TIFF* tif, void* buf, uint32 row, uint16 sample = 0);
+extern int TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample = 0);
+extern int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int = 0);
+extern int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*,
+ int = ORIENTATION_BOTLEFT, int = 0);
+#else
+extern void TIFFPrintDirectory(TIFF*, FILE*, long);
+extern int TIFFReadScanline(TIFF* tif, void* buf, uint32 row, uint16 sample);
+extern int TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample);
+extern int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int);
+extern int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*, int, int);
+#endif
+
+extern int TIFFReadRGBAStrip(TIFF*, uint32, uint32 * );
+extern int TIFFReadRGBATile(TIFF*, uint32, uint32, uint32 * );
+extern int TIFFRGBAImageOK(TIFF*, char [1024]);
+extern int TIFFRGBAImageBegin(TIFFRGBAImage*, TIFF*, int, char [1024]);
+extern int TIFFRGBAImageGet(TIFFRGBAImage*, uint32*, uint32, uint32);
+extern void TIFFRGBAImageEnd(TIFFRGBAImage*);
+extern TIFF* TIFFOpen(const char*, const char*);
+# ifdef __WIN32__
+extern TIFF* TIFFOpenW(const wchar_t*, const char*);
+# endif /* __WIN32__ */
+extern TIFF* TIFFFdOpen(int, const char*, const char*);
+extern TIFF* TIFFClientOpen(const char*, const char*,
+ thandle_t,
+ TIFFReadWriteProc, TIFFReadWriteProc,
+ TIFFSeekProc, TIFFCloseProc,
+ TIFFSizeProc,
+ TIFFMapFileProc, TIFFUnmapFileProc);
+extern const char* TIFFFileName(TIFF*);
+extern const char* TIFFSetFileName(TIFF*, const char *);
+extern void TIFFError(const char*, const char*, ...) __attribute__((__format__ (__printf__,2,3)));
+extern void TIFFErrorExt(thandle_t, const char*, const char*, ...) __attribute__((__format__ (__printf__,3,4)));
+extern void TIFFWarning(const char*, const char*, ...) __attribute__((__format__ (__printf__,2,3)));
+extern void TIFFWarningExt(thandle_t, const char*, const char*, ...) __attribute__((__format__ (__printf__,3,4)));
+extern TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler);
+extern TIFFErrorHandlerExt TIFFSetErrorHandlerExt(TIFFErrorHandlerExt);
+extern TIFFErrorHandler TIFFSetWarningHandler(TIFFErrorHandler);
+extern TIFFErrorHandlerExt TIFFSetWarningHandlerExt(TIFFErrorHandlerExt);
+extern TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc);
+extern uint32 TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s);
+extern int TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s);
+extern uint32 TIFFNumberOfTiles(TIFF*);
+extern tmsize_t TIFFReadTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s);
+extern tmsize_t TIFFWriteTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s);
+extern uint32 TIFFComputeStrip(TIFF*, uint32, uint16);
+extern uint32 TIFFNumberOfStrips(TIFF*);
+extern tmsize_t TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size);
+extern tmsize_t TIFFReadRawStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size);
+extern tmsize_t TIFFReadEncodedTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size);
+extern tmsize_t TIFFReadRawTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size);
+extern tmsize_t TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc);
+extern tmsize_t TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc);
+extern tmsize_t TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc);
+extern tmsize_t TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc);
+extern int TIFFDataWidth(TIFFDataType); /* table of tag datatype widths */
+extern void TIFFSetWriteOffset(TIFF* tif, toff_t off);
+extern void TIFFSwabShort(uint16*);
+extern void TIFFSwabLong(uint32*);
+extern void TIFFSwabLong8(uint64*);
+extern void TIFFSwabFloat(float*);
+extern void TIFFSwabDouble(double*);
+extern void TIFFSwabArrayOfShort(uint16* wp, tmsize_t n);
+extern void TIFFSwabArrayOfTriples(uint8* tp, tmsize_t n);
+extern void TIFFSwabArrayOfLong(uint32* lp, tmsize_t n);
+extern void TIFFSwabArrayOfLong8(uint64* lp, tmsize_t n);
+extern void TIFFSwabArrayOfFloat(float* fp, tmsize_t n);
+extern void TIFFSwabArrayOfDouble(double* dp, tmsize_t n);
+extern void TIFFReverseBits(uint8* cp, tmsize_t n);
+extern const unsigned char* TIFFGetBitRevTable(int);
+
+#ifdef LOGLUV_PUBLIC
+#define U_NEU 0.210526316
+#define V_NEU 0.473684211
+#define UVSCALE 410.
+extern double LogL16toY(int);
+extern double LogL10toY(int);
+extern void XYZtoRGB24(float*, uint8*);
+extern int uv_decode(double*, double*, int);
+extern void LogLuv24toXYZ(uint32, float*);
+extern void LogLuv32toXYZ(uint32, float*);
+#if defined(c_plusplus) || defined(__cplusplus)
+extern int LogL16fromY(double, int = SGILOGENCODE_NODITHER);
+extern int LogL10fromY(double, int = SGILOGENCODE_NODITHER);
+extern int uv_encode(double, double, int = SGILOGENCODE_NODITHER);
+extern uint32 LogLuv24fromXYZ(float*, int = SGILOGENCODE_NODITHER);
+extern uint32 LogLuv32fromXYZ(float*, int = SGILOGENCODE_NODITHER);
+#else
+extern int LogL16fromY(double, int);
+extern int LogL10fromY(double, int);
+extern int uv_encode(double, double, int);
+extern uint32 LogLuv24fromXYZ(float*, int);
+extern uint32 LogLuv32fromXYZ(float*, int);
+#endif
+#endif /* LOGLUV_PUBLIC */
+
+extern int TIFFCIELabToRGBInit(TIFFCIELabToRGB*, const TIFFDisplay *, float*);
+extern void TIFFCIELabToXYZ(TIFFCIELabToRGB *, uint32, int32, int32,
+ float *, float *, float *);
+extern void TIFFXYZToRGB(TIFFCIELabToRGB *, float, float, float,
+ uint32 *, uint32 *, uint32 *);
+
+extern int TIFFYCbCrToRGBInit(TIFFYCbCrToRGB*, float*, float*);
+extern void TIFFYCbCrtoRGB(TIFFYCbCrToRGB *, uint32, int32, int32,
+ uint32 *, uint32 *, uint32 *);
+
+/****************************************************************************
+ * O B S O L E T E D I N T E R F A C E S
+ *
+ * Don't use this stuff in your applications, it may be removed in the future
+ * libtiff versions.
+ ****************************************************************************/
+typedef struct {
+ ttag_t field_tag; /* field's tag */
+ short field_readcount; /* read count/TIFF_VARIABLE/TIFF_SPP */
+ short field_writecount; /* write count/TIFF_VARIABLE */
+ TIFFDataType field_type; /* type of associated data */
+ unsigned short field_bit; /* bit in fieldsset bit vector */
+ unsigned char field_oktochange; /* if true, can change while writing */
+ unsigned char field_passcount; /* if true, pass dir count on set */
+ char *field_name; /* ASCII name */
+} TIFFFieldInfo;
+
+extern int TIFFMergeFieldInfo(TIFF*, const TIFFFieldInfo[], uint32);
+
+#if defined(c_plusplus) || defined(__cplusplus)
+}
+#endif
+
+#endif /* _TIFFIO_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tiffiop.h b/core/src/fxcodec/fx_tiff/tiff_v403/tiffiop.h
new file mode 100644
index 0000000..c5ddc3c
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tiffiop.h
@@ -0,0 +1,367 @@
+/* $Id: tiffiop.h,v 1.84 2012-05-30 01:50:17 fwarmerdam Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFIOP_
+#define _TIFFIOP_
+/*
+ * ``Library-private'' definitions.
+ */
+
+#include "tiffconf.h"
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+
+#ifdef HAVE_ASSERT_H
+# include <assert.h>
+#else
+# define assert(x)
+#endif
+
+#ifdef HAVE_SEARCH_H
+# include <search.h>
+#else
+extern void *lfind(const void *, const void *, size_t *, size_t,
+ int (*)(const void *, const void *));
+#endif
+
+#include "tiffio.h"
+
+#include "tif_dir.h"
+
+#ifndef STRIP_SIZE_DEFAULT
+# define STRIP_SIZE_DEFAULT 8192
+#endif
+
+#define streq(a,b) (strcmp(a,b) == 0)
+
+#ifndef TRUE
+#define TRUE 1
+#define FALSE 0
+#endif
+
+typedef struct client_info {
+ struct client_info *next;
+ void *data;
+ char *name;
+} TIFFClientInfoLink;
+
+/*
+ * Typedefs for ``method pointers'' used internally.
+ * these are depriciated and provided only for backwards compatibility
+ */
+typedef unsigned char tidataval_t; /* internal image data value type */
+typedef tidataval_t* tidata_t; /* reference to internal image data */
+
+typedef void (*TIFFVoidMethod)(TIFF*);
+typedef int (*TIFFBoolMethod)(TIFF*);
+typedef int (*TIFFPreMethod)(TIFF*, uint16);
+typedef int (*TIFFCodeMethod)(TIFF* tif, uint8* buf, tmsize_t size, uint16 sample);
+typedef int (*TIFFSeekMethod)(TIFF*, uint32);
+typedef void (*TIFFPostMethod)(TIFF* tif, uint8* buf, tmsize_t size);
+typedef uint32 (*TIFFStripMethod)(TIFF*, uint32);
+typedef void (*TIFFTileMethod)(TIFF*, uint32*, uint32*);
+
+struct tiff {
+ char* tif_name; /* name of open file */
+ int tif_fd; /* open file descriptor */
+ int tif_mode; /* open mode (O_*) */
+ uint32 tif_flags;
+ #define TIFF_FILLORDER 0x00003 /* natural bit fill order for machine */
+ #define TIFF_DIRTYHEADER 0x00004 /* header must be written on close */
+ #define TIFF_DIRTYDIRECT 0x00008 /* current directory must be written */
+ #define TIFF_BUFFERSETUP 0x00010 /* data buffers setup */
+ #define TIFF_CODERSETUP 0x00020 /* encoder/decoder setup done */
+ #define TIFF_BEENWRITING 0x00040 /* written 1+ scanlines to file */
+ #define TIFF_SWAB 0x00080 /* byte swap file information */
+ #define TIFF_NOBITREV 0x00100 /* inhibit bit reversal logic */
+ #define TIFF_MYBUFFER 0x00200 /* my raw data buffer; free on close */
+ #define TIFF_ISTILED 0x00400 /* file is tile, not strip- based */
+ #define TIFF_MAPPED 0x00800 /* file is mapped into memory */
+ #define TIFF_POSTENCODE 0x01000 /* need call to postencode routine */
+ #define TIFF_INSUBIFD 0x02000 /* currently writing a subifd */
+ #define TIFF_UPSAMPLED 0x04000 /* library is doing data up-sampling */
+ #define TIFF_STRIPCHOP 0x08000 /* enable strip chopping support */
+ #define TIFF_HEADERONLY 0x10000 /* read header only, do not process the first directory */
+ #define TIFF_NOREADRAW 0x20000 /* skip reading of raw uncompressed image data */
+ #define TIFF_INCUSTOMIFD 0x40000 /* currently writing a custom IFD */
+ #define TIFF_BIGTIFF 0x80000 /* read/write bigtiff */
+ #define TIFF_BUF4WRITE 0x100000 /* rawcc bytes are for writing */
+ #define TIFF_DIRTYSTRIP 0x200000 /* stripoffsets/stripbytecount dirty*/
+ #define TIFF_PERSAMPLE 0x400000 /* get/set per sample tags as arrays */
+ #define TIFF_BUFFERMMAP 0x800000 /* read buffer (tif_rawdata) points into mmap() memory */
+ uint64 tif_diroff; /* file offset of current directory */
+ uint64 tif_nextdiroff; /* file offset of following directory */
+ uint64* tif_dirlist; /* list of offsets to already seen directories to prevent IFD looping */
+ uint16 tif_dirlistsize; /* number of entires in offset list */
+ uint16 tif_dirnumber; /* number of already seen directories */
+ TIFFDirectory tif_dir; /* internal rep of current directory */
+ TIFFDirectory tif_customdir; /* custom IFDs are separated from the main ones */
+ union {
+ TIFFHeaderCommon common;
+ TIFFHeaderClassic classic;
+ TIFFHeaderBig big;
+ } tif_header;
+ uint16 tif_header_size; /* file's header block and its length */
+ uint32 tif_row; /* current scanline */
+ uint16 tif_curdir; /* current directory (index) */
+ uint32 tif_curstrip; /* current strip for read/write */
+ uint64 tif_curoff; /* current offset for read/write */
+ uint64 tif_dataoff; /* current offset for writing dir */
+ /* SubIFD support */
+ uint16 tif_nsubifd; /* remaining subifds to write */
+ uint64 tif_subifdoff; /* offset for patching SubIFD link */
+ /* tiling support */
+ uint32 tif_col; /* current column (offset by row too) */
+ uint32 tif_curtile; /* current tile for read/write */
+ tmsize_t tif_tilesize; /* # of bytes in a tile */
+ /* compression scheme hooks */
+ int tif_decodestatus;
+ TIFFBoolMethod tif_fixuptags; /* called in TIFFReadDirectory */
+ TIFFBoolMethod tif_setupdecode; /* called once before predecode */
+ TIFFPreMethod tif_predecode; /* pre- row/strip/tile decoding */
+ TIFFBoolMethod tif_setupencode; /* called once before preencode */
+ int tif_encodestatus;
+ TIFFPreMethod tif_preencode; /* pre- row/strip/tile encoding */
+ TIFFBoolMethod tif_postencode; /* post- row/strip/tile encoding */
+ TIFFCodeMethod tif_decoderow; /* scanline decoding routine */
+ TIFFCodeMethod tif_encoderow; /* scanline encoding routine */
+ TIFFCodeMethod tif_decodestrip; /* strip decoding routine */
+ TIFFCodeMethod tif_encodestrip; /* strip encoding routine */
+ TIFFCodeMethod tif_decodetile; /* tile decoding routine */
+ TIFFCodeMethod tif_encodetile; /* tile encoding routine */
+ TIFFVoidMethod tif_close; /* cleanup-on-close routine */
+ TIFFSeekMethod tif_seek; /* position within a strip routine */
+ TIFFVoidMethod tif_cleanup; /* cleanup state routine */
+ TIFFStripMethod tif_defstripsize; /* calculate/constrain strip size */
+ TIFFTileMethod tif_deftilesize; /* calculate/constrain tile size */
+ uint8* tif_data; /* compression scheme private data */
+ /* input/output buffering */
+ tmsize_t tif_scanlinesize; /* # of bytes in a scanline */
+ tmsize_t tif_scanlineskew; /* scanline skew for reading strips */
+ uint8* tif_rawdata; /* raw data buffer */
+ tmsize_t tif_rawdatasize; /* # of bytes in raw data buffer */
+ tmsize_t tif_rawdataoff; /* rawdata offset within strip */
+ tmsize_t tif_rawdataloaded;/* amount of data in rawdata */
+ uint8* tif_rawcp; /* current spot in raw buffer */
+ tmsize_t tif_rawcc; /* bytes unread from raw buffer */
+ /* memory-mapped file support */
+ uint8* tif_base; /* base of mapped file */
+ tmsize_t tif_size; /* size of mapped file region (bytes, thus tmsize_t) */
+ TIFFMapFileProc tif_mapproc; /* map file method */
+ TIFFUnmapFileProc tif_unmapproc; /* unmap file method */
+ /* input/output callback methods */
+ thandle_t tif_clientdata; /* callback parameter */
+ TIFFReadWriteProc tif_readproc; /* read method */
+ TIFFReadWriteProc tif_writeproc; /* write method */
+ TIFFSeekProc tif_seekproc; /* lseek method */
+ TIFFCloseProc tif_closeproc; /* close method */
+ TIFFSizeProc tif_sizeproc; /* filesize method */
+ /* post-decoding support */
+ TIFFPostMethod tif_postdecode; /* post decoding routine */
+ /* tag support */
+ TIFFField** tif_fields; /* sorted table of registered tags */
+ size_t tif_nfields; /* # entries in registered tag table */
+ const TIFFField* tif_foundfield; /* cached pointer to already found tag */
+ TIFFTagMethods tif_tagmethods; /* tag get/set/print routines */
+ TIFFClientInfoLink* tif_clientinfo; /* extra client information. */
+ /* Backward compatibility stuff. We need these two fields for
+ * setting up an old tag extension scheme. */
+ TIFFFieldArray* tif_fieldscompat;
+ size_t tif_nfieldscompat;
+};
+
+#define isPseudoTag(t) (t > 0xffff) /* is tag value normal or pseudo */
+
+#define isTiled(tif) (((tif)->tif_flags & TIFF_ISTILED) != 0)
+#define isMapped(tif) (((tif)->tif_flags & TIFF_MAPPED) != 0)
+#define isFillOrder(tif, o) (((tif)->tif_flags & (o)) != 0)
+#define isUpSampled(tif) (((tif)->tif_flags & TIFF_UPSAMPLED) != 0)
+#define TIFFReadFile(tif, buf, size) \
+ ((*(tif)->tif_readproc)((tif)->tif_clientdata,(buf),(size)))
+#define TIFFWriteFile(tif, buf, size) \
+ ((*(tif)->tif_writeproc)((tif)->tif_clientdata,(buf),(size)))
+#define TIFFSeekFile(tif, off, whence) \
+ ((*(tif)->tif_seekproc)((tif)->tif_clientdata,(off),(whence)))
+#define TIFFCloseFile(tif) \
+ ((*(tif)->tif_closeproc)((tif)->tif_clientdata))
+#define TIFFGetFileSize(tif) \
+ ((*(tif)->tif_sizeproc)((tif)->tif_clientdata))
+#define TIFFMapFileContents(tif, paddr, psize) \
+ ((*(tif)->tif_mapproc)((tif)->tif_clientdata,(paddr),(psize)))
+#define TIFFUnmapFileContents(tif, addr, size) \
+ ((*(tif)->tif_unmapproc)((tif)->tif_clientdata,(addr),(size)))
+
+/*
+ * Default Read/Seek/Write definitions.
+ */
+#ifndef ReadOK
+#define ReadOK(tif, buf, size) \
+ (TIFFReadFile((tif),(buf),(size))==(size))
+#endif
+#ifndef SeekOK
+#define SeekOK(tif, off) \
+ (TIFFSeekFile((tif),(off),SEEK_SET)==(off))
+#endif
+#ifndef WriteOK
+#define WriteOK(tif, buf, size) \
+ (TIFFWriteFile((tif),(buf),(size))==(size))
+#endif
+
+/* NB: the uint32 casts are to silence certain ANSI-C compilers */
+#define TIFFhowmany_32(x, y) (((uint32)x < (0xffffffff - (uint32)(y-1))) ? \
+ ((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y))) : \
+ 0U)
+#define TIFFhowmany8_32(x) (((x)&0x07)?((uint32)(x)>>3)+1:(uint32)(x)>>3)
+#define TIFFroundup_32(x, y) (TIFFhowmany_32(x,y)*(y))
+#define TIFFhowmany_64(x, y) ((((uint64)(x))+(((uint64)(y))-1))/((uint64)(y)))
+#define TIFFhowmany8_64(x) (((x)&0x07)?((uint64)(x)>>3)+1:(uint64)(x)>>3)
+#define TIFFroundup_64(x, y) (TIFFhowmany_64(x,y)*(y))
+
+/* Safe multiply which returns zero if there is an integer overflow */
+#define TIFFSafeMultiply(t,v,m) ((((t)(m) != (t)0) && (((t)(((v)*(m))/(m))) == (t)(v))) ? (t)((v)*(m)) : (t)0)
+
+#define TIFFmax(A,B) ((A)>(B)?(A):(B))
+#define TIFFmin(A,B) ((A)<(B)?(A):(B))
+
+#define TIFFArrayCount(a) (sizeof (a) / sizeof ((a)[0]))
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+extern int _TIFFgetMode(const char* mode, const char* module);
+extern int _TIFFNoRowEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
+extern int _TIFFNoStripEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
+extern int _TIFFNoTileEncode(TIFF*, uint8* pp, tmsize_t cc, uint16 s);
+extern int _TIFFNoRowDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
+extern int _TIFFNoStripDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
+extern int _TIFFNoTileDecode(TIFF*, uint8* pp, tmsize_t cc, uint16 s);
+extern void _TIFFNoPostDecode(TIFF* tif, uint8* buf, tmsize_t cc);
+extern int _TIFFNoPreCode(TIFF* tif, uint16 s);
+extern int _TIFFNoSeek(TIFF* tif, uint32 off);
+extern void _TIFFSwab16BitData(TIFF* tif, uint8* buf, tmsize_t cc);
+extern void _TIFFSwab24BitData(TIFF* tif, uint8* buf, tmsize_t cc);
+extern void _TIFFSwab32BitData(TIFF* tif, uint8* buf, tmsize_t cc);
+extern void _TIFFSwab64BitData(TIFF* tif, uint8* buf, tmsize_t cc);
+extern int TIFFFlushData1(TIFF* tif);
+extern int TIFFDefaultDirectory(TIFF* tif);
+extern void _TIFFSetDefaultCompressionState(TIFF* tif);
+extern int _TIFFRewriteField(TIFF *, uint16, TIFFDataType, tmsize_t, void *);
+extern int TIFFSetCompressionScheme(TIFF* tif, int scheme);
+extern int TIFFSetDefaultCompressionState(TIFF* tif);
+extern uint32 _TIFFDefaultStripSize(TIFF* tif, uint32 s);
+extern void _TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th);
+extern int _TIFFDataSize(TIFFDataType type);
+
+extern void _TIFFsetByteArray(void**, void*, uint32);
+extern void _TIFFsetString(char**, char*);
+extern void _TIFFsetShortArray(uint16**, uint16*, uint32);
+extern void _TIFFsetLongArray(uint32**, uint32*, uint32);
+extern void _TIFFsetFloatArray(float**, float*, uint32);
+extern void _TIFFsetDoubleArray(double**, double*, uint32);
+
+extern void _TIFFprintAscii(FILE*, const char*);
+extern void _TIFFprintAsciiTag(FILE*, const char*, const char*);
+
+extern TIFFErrorHandler _TIFFwarningHandler;
+extern TIFFErrorHandler _TIFFerrorHandler;
+extern TIFFErrorHandlerExt _TIFFwarningHandlerExt;
+extern TIFFErrorHandlerExt _TIFFerrorHandlerExt;
+
+extern uint32 _TIFFMultiply32(TIFF*, uint32, uint32, const char*);
+extern uint64 _TIFFMultiply64(TIFF*, uint64, uint64, const char*);
+extern void* _TIFFCheckMalloc(TIFF*, tmsize_t, tmsize_t, const char*);
+extern void* _TIFFCheckRealloc(TIFF*, void*, tmsize_t, tmsize_t, const char*);
+
+extern double _TIFFUInt64ToDouble(uint64);
+extern float _TIFFUInt64ToFloat(uint64);
+
+extern int TIFFInitDumpMode(TIFF*, int);
+#ifdef PACKBITS_SUPPORT
+extern int TIFFInitPackBits(TIFF*, int);
+#endif
+#ifdef CCITT_SUPPORT
+extern int TIFFInitCCITTRLE(TIFF*, int), TIFFInitCCITTRLEW(TIFF*, int);
+extern int TIFFInitCCITTFax3(TIFF*, int), TIFFInitCCITTFax4(TIFF*, int);
+#endif
+#ifdef THUNDER_SUPPORT
+extern int TIFFInitThunderScan(TIFF*, int);
+#endif
+#ifdef NEXT_SUPPORT
+extern int TIFFInitNeXT(TIFF*, int);
+#endif
+#ifdef LZW_SUPPORT
+extern int TIFFInitLZW(TIFF*, int);
+#endif
+#ifdef OJPEG_SUPPORT
+extern int TIFFInitOJPEG(TIFF*, int);
+#endif
+#ifdef JPEG_SUPPORT
+extern int TIFFInitJPEG(TIFF*, int);
+#endif
+#ifdef JBIG_SUPPORT
+extern int TIFFInitJBIG(TIFF*, int);
+#endif
+#ifdef ZIP_SUPPORT
+extern int TIFFInitZIP(TIFF*, int);
+#endif
+#ifdef PIXARLOG_SUPPORT
+extern int TIFFInitPixarLog(TIFF*, int);
+#endif
+#ifdef LOGLUV_SUPPORT
+extern int TIFFInitSGILog(TIFF*, int);
+#endif
+#ifdef LZMA_SUPPORT
+extern int TIFFInitLZMA(TIFF*, int);
+#endif
+#ifdef VMS
+extern const TIFFCodec _TIFFBuiltinCODECS[];
+#else
+extern TIFFCodec _TIFFBuiltinCODECS[];
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* _TIFFIOP_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/tiffvers.h b/core/src/fxcodec/fx_tiff/tiff_v403/tiffvers.h
new file mode 100644
index 0000000..40edc81
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/tiffvers.h
@@ -0,0 +1,9 @@
+#define TIFFLIB_VERSION_STR "LIBTIFF, Version 4.0.3\nCopyright (c) 1988-1996 Sam Leffler\nCopyright (c) 1991-1996 Silicon Graphics, Inc."
+/*
+ * This define can be used in code that requires
+ * compilation-related definitions specific to a
+ * version or versions of the library. Runtime
+ * version checking should be done based on the
+ * string returned by TIFFGetVersion.
+ */
+#define TIFFLIB_VERSION 20120922
diff --git a/core/src/fxcodec/fx_tiff/tiff_v403/uvcode.h b/core/src/fxcodec/fx_tiff/tiff_v403/uvcode.h
new file mode 100644
index 0000000..50f11d7
--- /dev/null
+++ b/core/src/fxcodec/fx_tiff/tiff_v403/uvcode.h
@@ -0,0 +1,180 @@
+/* Version 1.0 generated April 7, 1997 by Greg Ward Larson, SGI */
+#define UV_SQSIZ (float)0.003500
+#define UV_NDIVS 16289
+#define UV_VSTART (float)0.016940
+#define UV_NVS 163
+static struct {
+ float ustart;
+ short nus, ncum;
+} uv_row[UV_NVS] = {
+ { (float)0.247663, 4, 0 },
+ { (float)0.243779, 6, 4 },
+ { (float)0.241684, 7, 10 },
+ { (float)0.237874, 9, 17 },
+ { (float)0.235906, 10, 26 },
+ { (float)0.232153, 12, 36 },
+ { (float)0.228352, 14, 48 },
+ { (float)0.226259, 15, 62 },
+ { (float)0.222371, 17, 77 },
+ { (float)0.220410, 18, 94 },
+ { (float)0.214710, 21, 112 },
+ { (float)0.212714, 22, 133 },
+ { (float)0.210721, 23, 155 },
+ { (float)0.204976, 26, 178 },
+ { (float)0.202986, 27, 204 },
+ { (float)0.199245, 29, 231 },
+ { (float)0.195525, 31, 260 },
+ { (float)0.193560, 32, 291 },
+ { (float)0.189878, 34, 323 },
+ { (float)0.186216, 36, 357 },
+ { (float)0.186216, 36, 393 },
+ { (float)0.182592, 38, 429 },
+ { (float)0.179003, 40, 467 },
+ { (float)0.175466, 42, 507 },
+ { (float)0.172001, 44, 549 },
+ { (float)0.172001, 44, 593 },
+ { (float)0.168612, 46, 637 },
+ { (float)0.168612, 46, 683 },
+ { (float)0.163575, 49, 729 },
+ { (float)0.158642, 52, 778 },
+ { (float)0.158642, 52, 830 },
+ { (float)0.158642, 52, 882 },
+ { (float)0.153815, 55, 934 },
+ { (float)0.153815, 55, 989 },
+ { (float)0.149097, 58, 1044 },
+ { (float)0.149097, 58, 1102 },
+ { (float)0.142746, 62, 1160 },
+ { (float)0.142746, 62, 1222 },
+ { (float)0.142746, 62, 1284 },
+ { (float)0.138270, 65, 1346 },
+ { (float)0.138270, 65, 1411 },
+ { (float)0.138270, 65, 1476 },
+ { (float)0.132166, 69, 1541 },
+ { (float)0.132166, 69, 1610 },
+ { (float)0.126204, 73, 1679 },
+ { (float)0.126204, 73, 1752 },
+ { (float)0.126204, 73, 1825 },
+ { (float)0.120381, 77, 1898 },
+ { (float)0.120381, 77, 1975 },
+ { (float)0.120381, 77, 2052 },
+ { (float)0.120381, 77, 2129 },
+ { (float)0.112962, 82, 2206 },
+ { (float)0.112962, 82, 2288 },
+ { (float)0.112962, 82, 2370 },
+ { (float)0.107450, 86, 2452 },
+ { (float)0.107450, 86, 2538 },
+ { (float)0.107450, 86, 2624 },
+ { (float)0.107450, 86, 2710 },
+ { (float)0.100343, 91, 2796 },
+ { (float)0.100343, 91, 2887 },
+ { (float)0.100343, 91, 2978 },
+ { (float)0.095126, 95, 3069 },
+ { (float)0.095126, 95, 3164 },
+ { (float)0.095126, 95, 3259 },
+ { (float)0.095126, 95, 3354 },
+ { (float)0.088276, 100, 3449 },
+ { (float)0.088276, 100, 3549 },
+ { (float)0.088276, 100, 3649 },
+ { (float)0.088276, 100, 3749 },
+ { (float)0.081523, 105, 3849 },
+ { (float)0.081523, 105, 3954 },
+ { (float)0.081523, 105, 4059 },
+ { (float)0.081523, 105, 4164 },
+ { (float)0.074861, 110, 4269 },
+ { (float)0.074861, 110, 4379 },
+ { (float)0.074861, 110, 4489 },
+ { (float)0.074861, 110, 4599 },
+ { (float)0.068290, 115, 4709 },
+ { (float)0.068290, 115, 4824 },
+ { (float)0.068290, 115, 4939 },
+ { (float)0.068290, 115, 5054 },
+ { (float)0.063573, 119, 5169 },
+ { (float)0.063573, 119, 5288 },
+ { (float)0.063573, 119, 5407 },
+ { (float)0.063573, 119, 5526 },
+ { (float)0.057219, 124, 5645 },
+ { (float)0.057219, 124, 5769 },
+ { (float)0.057219, 124, 5893 },
+ { (float)0.057219, 124, 6017 },
+ { (float)0.050985, 129, 6141 },
+ { (float)0.050985, 129, 6270 },
+ { (float)0.050985, 129, 6399 },
+ { (float)0.050985, 129, 6528 },
+ { (float)0.050985, 129, 6657 },
+ { (float)0.044859, 134, 6786 },
+ { (float)0.044859, 134, 6920 },
+ { (float)0.044859, 134, 7054 },
+ { (float)0.044859, 134, 7188 },
+ { (float)0.040571, 138, 7322 },
+ { (float)0.040571, 138, 7460 },
+ { (float)0.040571, 138, 7598 },
+ { (float)0.040571, 138, 7736 },
+ { (float)0.036339, 142, 7874 },
+ { (float)0.036339, 142, 8016 },
+ { (float)0.036339, 142, 8158 },
+ { (float)0.036339, 142, 8300 },
+ { (float)0.032139, 146, 8442 },
+ { (float)0.032139, 146, 8588 },
+ { (float)0.032139, 146, 8734 },
+ { (float)0.032139, 146, 8880 },
+ { (float)0.027947, 150, 9026 },
+ { (float)0.027947, 150, 9176 },
+ { (float)0.027947, 150, 9326 },
+ { (float)0.023739, 154, 9476 },
+ { (float)0.023739, 154, 9630 },
+ { (float)0.023739, 154, 9784 },
+ { (float)0.023739, 154, 9938 },
+ { (float)0.019504, 158, 10092 },
+ { (float)0.019504, 158, 10250 },
+ { (float)0.019504, 158, 10408 },
+ { (float)0.016976, 161, 10566 },
+ { (float)0.016976, 161, 10727 },
+ { (float)0.016976, 161, 10888 },
+ { (float)0.016976, 161, 11049 },
+ { (float)0.012639, 165, 11210 },
+ { (float)0.012639, 165, 11375 },
+ { (float)0.012639, 165, 11540 },
+ { (float)0.009991, 168, 11705 },
+ { (float)0.009991, 168, 11873 },
+ { (float)0.009991, 168, 12041 },
+ { (float)0.009016, 170, 12209 },
+ { (float)0.009016, 170, 12379 },
+ { (float)0.009016, 170, 12549 },
+ { (float)0.006217, 173, 12719 },
+ { (float)0.006217, 173, 12892 },
+ { (float)0.005097, 175, 13065 },
+ { (float)0.005097, 175, 13240 },
+ { (float)0.005097, 175, 13415 },
+ { (float)0.003909, 177, 13590 },
+ { (float)0.003909, 177, 13767 },
+ { (float)0.002340, 177, 13944 },
+ { (float)0.002389, 170, 14121 },
+ { (float)0.001068, 164, 14291 },
+ { (float)0.001653, 157, 14455 },
+ { (float)0.000717, 150, 14612 },
+ { (float)0.001614, 143, 14762 },
+ { (float)0.000270, 136, 14905 },
+ { (float)0.000484, 129, 15041 },
+ { (float)0.001103, 123, 15170 },
+ { (float)0.001242, 115, 15293 },
+ { (float)0.001188, 109, 15408 },
+ { (float)0.001011, 103, 15517 },
+ { (float)0.000709, 97, 15620 },
+ { (float)0.000301, 89, 15717 },
+ { (float)0.002416, 82, 15806 },
+ { (float)0.003251, 76, 15888 },
+ { (float)0.003246, 69, 15964 },
+ { (float)0.004141, 62, 16033 },
+ { (float)0.005963, 55, 16095 },
+ { (float)0.008839, 47, 16150 },
+ { (float)0.010490, 40, 16197 },
+ { (float)0.016994, 31, 16237 },
+ { (float)0.023659, 21, 16268 },
+};
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
diff --git a/core/src/fxcodec/lbmp/fx_bmp.cpp b/core/src/fxcodec/lbmp/fx_bmp.cpp
new file mode 100644
index 0000000..4c6eb61
--- /dev/null
+++ b/core/src/fxcodec/lbmp/fx_bmp.cpp
@@ -0,0 +1,917 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "fx_bmp.h"
+FX_DWORD _GetDWord_LSBFirst(FX_LPBYTE p)
+{
+ return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
+}
+FX_WORD _GetWord_LSBFirst(FX_LPBYTE p)
+{
+ return p[0] | (p[1] << 8);
+}
+void _SetDWord_LSBFirst(FX_LPBYTE p, FX_DWORD v)
+{
+ p[0] = (FX_BYTE)v;
+ p[1] = (FX_BYTE)(v >> 8);
+ p[2] = (FX_BYTE)(v >> 16);
+ p[3] = (FX_BYTE)(v >> 24);
+}
+void _SetWord_LSBFirst(FX_LPBYTE p, FX_WORD v)
+{
+ p[0] = (FX_BYTE)v;
+ p[1] = (FX_BYTE)(v >> 8);
+}
+void _bmp_error(bmp_decompress_struct_p bmp_ptr, FX_LPCSTR err_msg)
+{
+ if(bmp_ptr != NULL && bmp_ptr->_bmp_error_fn != NULL) {
+ bmp_ptr->_bmp_error_fn(bmp_ptr, err_msg);
+ }
+}
+bmp_decompress_struct_p _bmp_create_decompress()
+{
+ bmp_decompress_struct_p bmp_ptr = FX_Alloc(bmp_decompress_struct, 1);
+ if(bmp_ptr == NULL) {
+ return NULL;
+ }
+ FXSYS_memset32(bmp_ptr, 0, sizeof(bmp_decompress_struct));
+ bmp_ptr->decode_status = BMP_D_STATUS_HEADER;
+ bmp_ptr->bmp_header_ptr = FX_Alloc(BmpFileHeader, 1);
+ return bmp_ptr;
+}
+void _bmp_destroy_decompress(bmp_decompress_struct_pp bmp_ptr_ptr)
+{
+ if(bmp_ptr_ptr == NULL || *bmp_ptr_ptr == NULL) {
+ return;
+ }
+ bmp_decompress_struct_p bmp_ptr = *bmp_ptr_ptr;
+ *bmp_ptr_ptr = NULL;
+ if(bmp_ptr->out_row_buffer != NULL) {
+ FX_Free(bmp_ptr->out_row_buffer);
+ }
+ if(bmp_ptr->pal_ptr != NULL) {
+ FX_Free(bmp_ptr->pal_ptr);
+ }
+ if(bmp_ptr->bmp_header_ptr != NULL) {
+ FX_Free(bmp_ptr->bmp_header_ptr);
+ }
+ FX_Free(bmp_ptr);
+}
+FX_INT32 _bmp_read_header(bmp_decompress_struct_p bmp_ptr)
+{
+ if(bmp_ptr == NULL) {
+ return 0;
+ }
+ FX_DWORD skip_size_org = bmp_ptr->skip_size;
+ if(bmp_ptr->decode_status == BMP_D_STATUS_HEADER) {
+ ASSERT(sizeof(BmpFileHeader) == 14);
+ BmpFileHeader* bmp_header_ptr = NULL;
+ if(_bmp_read_data(bmp_ptr, (FX_LPBYTE*)&bmp_header_ptr, 14) == NULL) {
+ return 2;
+ }
+ bmp_ptr->bmp_header_ptr->bfType = _GetWord_LSBFirst((FX_LPBYTE)&bmp_header_ptr->bfType);
+ bmp_ptr->bmp_header_ptr->bfOffBits = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_header_ptr->bfOffBits);
+ bmp_ptr->data_size = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_header_ptr->bfSize);
+ if(bmp_ptr->bmp_header_ptr->bfType != BMP_SIGNATURE) {
+ _bmp_error(bmp_ptr, "Not A Bmp Image");
+ return 0;
+ }
+ if(bmp_ptr->avail_in < sizeof(FX_DWORD)) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ bmp_ptr->img_ifh_size = _GetDWord_LSBFirst(bmp_ptr->next_in + bmp_ptr->skip_size);
+ bmp_ptr->pal_type = 0;
+ ASSERT(sizeof(BmpCoreHeader) == 12);
+ ASSERT(sizeof(BmpInfoHeader) == 40);
+ switch(bmp_ptr->img_ifh_size) {
+ case FX_MIN(12, sizeof(BmpCoreHeader)): {
+ bmp_ptr->pal_type = 1;
+ BmpCoreHeaderPtr bmp_core_header_ptr = NULL;
+ if(_bmp_read_data(bmp_ptr, (FX_LPBYTE*)&bmp_core_header_ptr, bmp_ptr->img_ifh_size) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ bmp_ptr->width = (FX_DWORD)_GetWord_LSBFirst((FX_LPBYTE)&bmp_core_header_ptr->bcWidth);
+ bmp_ptr->height = (FX_DWORD)_GetWord_LSBFirst((FX_LPBYTE)&bmp_core_header_ptr->bcHeight);
+ bmp_ptr->bitCounts = _GetWord_LSBFirst((FX_LPBYTE)&bmp_core_header_ptr->bcBitCount);
+ bmp_ptr->compress_flag = BMP_RGB;
+ bmp_ptr->imgTB_flag = FALSE;
+ }
+ break;
+ case FX_MIN(40, sizeof(BmpInfoHeader)): {
+ BmpInfoHeaderPtr bmp_info_header_ptr = NULL;
+ if(_bmp_read_data(bmp_ptr, (FX_LPBYTE*)&bmp_info_header_ptr, bmp_ptr->img_ifh_size) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ bmp_ptr->width = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biWidth);
+ bmp_ptr->height = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biHeight);
+ bmp_ptr->bitCounts = _GetWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biBitCount);
+ bmp_ptr->compress_flag = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biCompression);
+ bmp_ptr->color_used = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biClrUsed);
+ bmp_ptr->dpi_x = (FX_INT32)_GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biXPelsPerMeter);
+ bmp_ptr->dpi_y = (FX_INT32)_GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biYPelsPerMeter);
+ if(bmp_ptr->height < 0) {
+ bmp_ptr->height = -bmp_ptr->height;
+ bmp_ptr->imgTB_flag = TRUE;
+ }
+ }
+ break;
+ default: {
+ if(bmp_ptr->img_ifh_size > FX_MIN(40, sizeof(BmpInfoHeader))) {
+ BmpInfoHeaderPtr bmp_info_header_ptr = NULL;
+ if(_bmp_read_data(bmp_ptr, (FX_LPBYTE*)&bmp_info_header_ptr, bmp_ptr->img_ifh_size) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ FX_WORD biPlanes;
+ bmp_ptr->width = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biWidth);
+ bmp_ptr->height = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biHeight);
+ bmp_ptr->bitCounts = _GetWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biBitCount);
+ bmp_ptr->compress_flag = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biCompression);
+ bmp_ptr->color_used = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biClrUsed);
+ biPlanes = _GetWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biPlanes);
+ bmp_ptr->dpi_x = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biXPelsPerMeter);
+ bmp_ptr->dpi_y = _GetDWord_LSBFirst((FX_LPBYTE)&bmp_info_header_ptr->biYPelsPerMeter);
+ if(bmp_ptr->height < 0) {
+ bmp_ptr->height = -bmp_ptr->height;
+ bmp_ptr->imgTB_flag = TRUE;
+ }
+ if(bmp_ptr->compress_flag == BMP_RGB &&
+ biPlanes == 1 &&
+ bmp_ptr->color_used == 0) {
+ break;
+ }
+ }
+ _bmp_error(bmp_ptr, "Unsupported Bmp File");
+ return 0;
+ }
+ }
+ ASSERT(bmp_ptr->width > 0);
+ ASSERT(bmp_ptr->compress_flag <= BMP_BITFIELDS);
+ switch(bmp_ptr->bitCounts) {
+ case 1:
+ case 4:
+ case 8:
+ case 16:
+ case 24: {
+ if(bmp_ptr->color_used > ((FX_DWORD)1) << bmp_ptr->bitCounts) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ }
+ case 32: {
+ if(bmp_ptr->width <= 0 || bmp_ptr->compress_flag > BMP_BITFIELDS) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ }
+ break;
+ default:
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ bmp_ptr->src_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, bmp_ptr->bitCounts);
+ switch(bmp_ptr->bitCounts) {
+ case 1:
+ case 4:
+ case 8:
+ bmp_ptr->out_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, 8);
+ bmp_ptr->components = 1;
+ break;
+ case 16:
+ case 24:
+ bmp_ptr->out_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, 24);
+ bmp_ptr->components = 3;
+ break;
+ case 32:
+ bmp_ptr->out_row_bytes = bmp_ptr->src_row_bytes;
+ bmp_ptr->components = 4;
+ break;
+ }
+ if(bmp_ptr->out_row_buffer != NULL) {
+ FX_Free(bmp_ptr->out_row_buffer);
+ bmp_ptr->out_row_buffer = NULL;
+ }
+ bmp_ptr->out_row_buffer = FX_Alloc(FX_BYTE, bmp_ptr->out_row_bytes);
+ BMP_PTR_NOT_NULL(bmp_ptr->out_row_buffer, bmp_ptr);
+ FXSYS_memset32(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_PAL);
+ }
+ if (bmp_ptr->decode_status == BMP_D_STATUS_PAL) {
+ skip_size_org = bmp_ptr->skip_size;
+#ifdef BMP_SUPPORT_BITFIELD
+ if(bmp_ptr->compress_flag == BMP_BITFIELDS) {
+ if(bmp_ptr->bitCounts != 16 && bmp_ptr->bitCounts != 32) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ FX_DWORD* mask;
+ if(_bmp_read_data(bmp_ptr, (FX_LPBYTE*)&mask, 3 * sizeof(FX_DWORD)) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ bmp_ptr->mask_red = _GetDWord_LSBFirst((FX_LPBYTE)&mask[0]);
+ bmp_ptr->mask_green = _GetDWord_LSBFirst((FX_LPBYTE)&mask[1]);
+ bmp_ptr->mask_blue = _GetDWord_LSBFirst((FX_LPBYTE)&mask[2]);
+ if(bmp_ptr->mask_red & bmp_ptr->mask_green ||
+ bmp_ptr->mask_red & bmp_ptr->mask_blue ||
+ bmp_ptr->mask_green & bmp_ptr->mask_blue) {
+ _bmp_error(bmp_ptr, "The Bitfield Bmp File Is Corrupt");
+ return 0;
+ }
+ if(bmp_ptr->bmp_header_ptr->bfOffBits < 26 + bmp_ptr->img_ifh_size) {
+ bmp_ptr->bmp_header_ptr->bfOffBits = 26 + bmp_ptr->img_ifh_size;
+ }
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA_PRE);
+ return 1;
+ } else if(bmp_ptr->bitCounts == 16) {
+ bmp_ptr->mask_red = 0x7C00;
+ bmp_ptr->mask_green = 0x03E0;
+ bmp_ptr->mask_blue = 0x001F;
+ }
+#else
+ if(bmp_ptr->compress_flag == BMP_BITFIELDS || bmp_ptr->bitCounts == 16) {
+ _bmp_error(bmp_ptr, "Unsupported Bitfield Bmp File");
+ return 0;
+ }
+#endif
+ bmp_ptr->pal_num = 0;
+ if(bmp_ptr->bitCounts < 16) {
+ bmp_ptr->pal_num = 1 << bmp_ptr->bitCounts;
+ if(bmp_ptr->color_used != 0) {
+ bmp_ptr->pal_num = bmp_ptr->color_used;
+ }
+ FX_LPBYTE src_pal_ptr = NULL;
+ FX_DWORD src_pal_size = bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4);
+ if(_bmp_read_data(bmp_ptr, (FX_LPBYTE*)&src_pal_ptr, src_pal_size) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ if(bmp_ptr->pal_ptr != NULL) {
+ FX_Free(bmp_ptr->pal_ptr);
+ bmp_ptr->pal_ptr = NULL;
+ }
+ bmp_ptr->pal_ptr = FX_Alloc(FX_DWORD, bmp_ptr->pal_num);
+ BMP_PTR_NOT_NULL(bmp_ptr->pal_ptr, bmp_ptr);
+ FX_INT32 src_pal_index = 0;
+ if(bmp_ptr->pal_type == BMP_PAL_OLD) {
+ while(src_pal_index < bmp_ptr->pal_num) {
+ bmp_ptr->pal_ptr[src_pal_index++] = BMP_PAL_ENCODE(0x00, src_pal_ptr[2], src_pal_ptr[1], src_pal_ptr[0]);
+ src_pal_ptr += 3;
+ }
+ } else {
+ while(src_pal_index < bmp_ptr->pal_num) {
+ bmp_ptr->pal_ptr[src_pal_index++] = BMP_PAL_ENCODE(src_pal_ptr[3], src_pal_ptr[2], src_pal_ptr[1], src_pal_ptr[0]);
+ src_pal_ptr += 4;
+ }
+ }
+ }
+ if(bmp_ptr->bmp_header_ptr->bfOffBits < 14 + bmp_ptr->img_ifh_size + bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4)) {
+ bmp_ptr->bmp_header_ptr->bfOffBits = 14 + bmp_ptr->img_ifh_size + bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4);
+ }
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA_PRE);
+ }
+ return 1;
+}
+FX_INT32 _bmp_decode_image(bmp_decompress_struct_p bmp_ptr)
+{
+ if(bmp_ptr->decode_status == BMP_D_STATUS_DATA_PRE) {
+ bmp_ptr->avail_in = 0;
+ if(!bmp_ptr->_bmp_get_data_position_fn(bmp_ptr, bmp_ptr->bmp_header_ptr->bfOffBits)) {
+ bmp_ptr->decode_status = BMP_D_STATUS_TAIL;
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt, Unexpected Stream Offset");
+ return 0;
+ }
+ bmp_ptr->row_num = 0;
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
+ }
+ if(bmp_ptr->decode_status == BMP_D_STATUS_DATA) {
+ switch(bmp_ptr->compress_flag) {
+ case BMP_RGB:
+ case BMP_BITFIELDS:
+ return _bmp_decode_rgb(bmp_ptr);
+ case BMP_RLE8:
+ return _bmp_decode_rle8(bmp_ptr);
+ case BMP_RLE4:
+ return _bmp_decode_rle4(bmp_ptr);
+ }
+ }
+ _bmp_error(bmp_ptr, "Any Uncontrol Error");
+ return 0;
+}
+FX_INT32 _bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr)
+{
+ FX_LPBYTE row_buf = bmp_ptr->out_row_buffer;
+ FX_LPBYTE des_buf = NULL;
+ while (bmp_ptr->row_num < bmp_ptr->height) {
+ if(_bmp_read_data(bmp_ptr, &des_buf, bmp_ptr->src_row_bytes) == NULL) {
+ return 2;
+ }
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
+ switch(bmp_ptr->bitCounts) {
+ case 1: {
+ for (FX_INT32 col = 0; col < bmp_ptr->width; col++) {
+ *row_buf++ = des_buf[col >> 3] & (0x80 >> (col % 8)) ? 0x01 : 0x00;
+ }
+ }
+ break;
+ case 4: {
+ for (FX_INT32 col = 0; col < bmp_ptr->width; col++) {
+ *row_buf++ = (col & 0x01) ?
+ (des_buf[col >> 1] & 0x0F) :
+ ((des_buf[col >> 1] & 0xF0) >> 4);
+ }
+ }
+ break;
+#ifdef BMP_SUPPORT_BITFIELD
+ case 16: {
+ FX_WORD* buf = (FX_WORD*)des_buf;
+ FX_BYTE blue_bits = 0;
+ FX_BYTE green_bits = 0;
+ FX_BYTE red_bits = 0;
+ for(FX_INT32 i = 0; i < 16; i++) {
+ if((bmp_ptr->mask_blue >> i) & 0x01) {
+ blue_bits++;
+ }
+ if((bmp_ptr->mask_green >> i) & 0x01) {
+ green_bits++;
+ }
+ if((bmp_ptr->mask_red >> i) & 0x01) {
+ red_bits++;
+ }
+ }
+ green_bits += blue_bits;
+ red_bits += green_bits;
+ blue_bits = 8 - blue_bits;
+ green_bits -= 8;
+ red_bits -= 8;
+ for (FX_INT32 col = 0; col < bmp_ptr->width; col++) {
+ *buf = _GetWord_LSBFirst((FX_LPBYTE)buf);
+ *row_buf++ = (FX_BYTE)((*buf & bmp_ptr->mask_blue) << blue_bits);
+ *row_buf++ = (FX_BYTE)((*buf & bmp_ptr->mask_green) >> green_bits);
+ *row_buf++ = (FX_BYTE)((*buf++ & bmp_ptr->mask_red) >> red_bits);
+ }
+ }
+ break;
+#endif
+ case 8:
+ case 24:
+ case 32:
+ FXSYS_memcpy32(bmp_ptr->out_row_buffer, des_buf, bmp_ptr->src_row_bytes);
+ break;
+ }
+ row_buf = bmp_ptr->out_row_buffer;
+ bmp_ptr->_bmp_get_row_fn(bmp_ptr,
+ bmp_ptr->imgTB_flag ? bmp_ptr->row_num++ : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
+ bmp_ptr->out_row_buffer);
+ }
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
+ return 1;
+}
+FX_INT32 _bmp_decode_rle8(bmp_decompress_struct_p bmp_ptr)
+{
+ FX_LPBYTE first_byte_ptr = NULL;
+ FX_LPBYTE second_byte_ptr = NULL;
+ bmp_ptr->col_num = 0;
+ while(TRUE) {
+ FX_DWORD skip_size_org = bmp_ptr->skip_size;
+ if(_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) {
+ return 2;
+ }
+ switch(*first_byte_ptr) {
+ case RLE_MARKER: {
+ if(_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ switch(*first_byte_ptr) {
+ case RLE_EOL: {
+ if(bmp_ptr->row_num >= bmp_ptr->height) {
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ bmp_ptr->_bmp_get_row_fn(bmp_ptr,
+ bmp_ptr->imgTB_flag ? bmp_ptr->row_num++ : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
+ bmp_ptr->out_row_buffer);
+ bmp_ptr->col_num = 0;
+ FXSYS_memset32(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
+ continue;
+ }
+ case RLE_EOI: {
+ if(bmp_ptr->row_num < bmp_ptr->height) {
+ bmp_ptr->_bmp_get_row_fn(bmp_ptr,
+ bmp_ptr->imgTB_flag ? bmp_ptr->row_num++ : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
+ bmp_ptr->out_row_buffer);
+ }
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
+ return 1;
+ }
+ case RLE_DELTA: {
+ FX_LPBYTE delta_ptr;
+ if(_bmp_read_data(bmp_ptr, &delta_ptr, 2) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ bmp_ptr->col_num += (FX_INT32)delta_ptr[0];
+ FX_INT32 bmp_row_num_next = bmp_ptr->row_num + (FX_INT32)delta_ptr[1];
+ if(bmp_ptr->col_num >= bmp_ptr->out_row_bytes || bmp_row_num_next >= bmp_ptr->height) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt Or Not Supported");
+ return 0;
+ }
+ while(bmp_ptr->row_num < bmp_row_num_next) {
+ FXSYS_memset32(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
+ bmp_ptr->_bmp_get_row_fn(bmp_ptr,
+ bmp_ptr->imgTB_flag ? bmp_ptr->row_num++ : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
+ bmp_ptr->out_row_buffer);
+ }
+ }
+ break;
+ default: {
+ if((FX_INT32)(*first_byte_ptr) > bmp_ptr->src_row_bytes - bmp_ptr->col_num) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ if(_bmp_read_data(bmp_ptr, &second_byte_ptr,
+ *first_byte_ptr & 1 ? *first_byte_ptr + 1 : *first_byte_ptr) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ FXSYS_memcpy32(bmp_ptr->out_row_buffer + bmp_ptr->col_num, second_byte_ptr, *first_byte_ptr);
+ bmp_ptr->col_num += (FX_INT32)(*first_byte_ptr);
+ }
+ }
+ }
+ break;
+ default: {
+ if(_bmp_read_data(bmp_ptr, &second_byte_ptr, 1) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ if((FX_INT32)(*first_byte_ptr) > bmp_ptr->src_row_bytes - bmp_ptr->col_num) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ FXSYS_memset8(bmp_ptr->out_row_buffer + bmp_ptr->col_num, *second_byte_ptr, *first_byte_ptr);
+ bmp_ptr->col_num += (FX_INT32)(*first_byte_ptr);
+ }
+ }
+ }
+ _bmp_error(bmp_ptr, "Any Uncontrol Error");
+ return 0;
+}
+FX_INT32 _bmp_decode_rle4(bmp_decompress_struct_p bmp_ptr)
+{
+ FX_LPBYTE first_byte_ptr = NULL;
+ FX_LPBYTE second_byte_ptr = NULL;
+ bmp_ptr->col_num = 0;
+ while (TRUE) {
+ FX_DWORD skip_size_org = bmp_ptr->skip_size;
+ if(_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) {
+ return 2;
+ }
+ switch(*first_byte_ptr) {
+ case RLE_MARKER: {
+ if(_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ switch(*first_byte_ptr) {
+ case RLE_EOL: {
+ if(bmp_ptr->row_num >= bmp_ptr->height) {
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ bmp_ptr->_bmp_get_row_fn(bmp_ptr,
+ bmp_ptr->imgTB_flag ? bmp_ptr->row_num++ : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
+ bmp_ptr->out_row_buffer);
+ bmp_ptr->col_num = 0;
+ FXSYS_memset32(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
+ continue;
+ }
+ case RLE_EOI: {
+ if(bmp_ptr->row_num < bmp_ptr->height) {
+ bmp_ptr->_bmp_get_row_fn(bmp_ptr,
+ bmp_ptr->imgTB_flag ? bmp_ptr->row_num++ : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
+ bmp_ptr->out_row_buffer);
+ }
+ _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
+ return 1;
+ }
+ case RLE_DELTA: {
+ FX_LPBYTE delta_ptr;
+ if(_bmp_read_data(bmp_ptr, &delta_ptr, 2) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ bmp_ptr->col_num += (FX_INT32)delta_ptr[0];
+ FX_INT32 bmp_row_num_next = bmp_ptr->row_num + (FX_INT32)delta_ptr[1];
+ if(bmp_ptr->col_num >= bmp_ptr->out_row_bytes || bmp_row_num_next >= bmp_ptr->height) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt Or Not Supported");
+ return 0;
+ }
+ while(bmp_ptr->row_num < bmp_row_num_next) {
+ FXSYS_memset32(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
+ bmp_ptr->_bmp_get_row_fn(bmp_ptr,
+ bmp_ptr->imgTB_flag ? bmp_ptr->row_num++ : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
+ bmp_ptr->out_row_buffer);
+ }
+ }
+ break;
+ default: {
+ FX_BYTE size = (FX_BYTE)(((FX_WORD)(*first_byte_ptr) + 1) >> 1);
+ if((FX_INT32)*first_byte_ptr >= bmp_ptr->out_row_bytes - bmp_ptr->col_num) {
+ if(size + (bmp_ptr->col_num >> 1) > bmp_ptr->src_row_bytes) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ *first_byte_ptr = bmp_ptr->out_row_bytes - bmp_ptr->col_num - 1;
+ }
+ if(_bmp_read_data(bmp_ptr, &second_byte_ptr, size & 1 ? size + 1 : size) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ for (FX_BYTE i = 0; i < *first_byte_ptr; i++) {
+ if(i & 0x01) {
+ *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = (*second_byte_ptr++ & 0x0F);
+ } else {
+ *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = ((*second_byte_ptr & 0xF0) >> 4);
+ }
+ }
+ }
+ }
+ }
+ break;
+ default: {
+ if(_bmp_read_data(bmp_ptr, &second_byte_ptr, 1) == NULL) {
+ bmp_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ if((FX_INT32)*first_byte_ptr > bmp_ptr->out_row_bytes - bmp_ptr->col_num) {
+ FX_BYTE size = (FX_BYTE)(((FX_WORD)(*first_byte_ptr) + 1) >> 1);
+ if(size + (bmp_ptr->col_num >> 1) > bmp_ptr->src_row_bytes) {
+ _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
+ return 0;
+ }
+ *first_byte_ptr = bmp_ptr->out_row_bytes - bmp_ptr->col_num - 1;
+ }
+ for (FX_BYTE i = 0; i < *first_byte_ptr; i++) {
+ if(i & 0x01) {
+ *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = (*second_byte_ptr & 0x0F);
+ } else {
+ *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = ((*second_byte_ptr & 0xF0) >> 4);
+ }
+ }
+ }
+ }
+ }
+ _bmp_error(bmp_ptr, "Any Uncontrol Error");
+ return 0;
+}
+FX_LPBYTE _bmp_read_data(bmp_decompress_struct_p bmp_ptr, FX_LPBYTE* des_buf_pp, FX_DWORD data_size)
+{
+ if(bmp_ptr == NULL ||
+ bmp_ptr->avail_in < bmp_ptr->skip_size + data_size) {
+ return NULL;
+ }
+ *des_buf_pp = bmp_ptr->next_in + bmp_ptr->skip_size;
+ bmp_ptr->skip_size += data_size;
+ return *des_buf_pp;
+}
+void _bmp_save_decoding_status(bmp_decompress_struct_p bmp_ptr, FX_INT32 status)
+{
+ bmp_ptr->decode_status = status;
+ bmp_ptr->next_in += bmp_ptr->skip_size;
+ bmp_ptr->avail_in -= bmp_ptr->skip_size;
+ bmp_ptr->skip_size = 0;
+}
+void _bmp_input_buffer(bmp_decompress_struct_p bmp_ptr, FX_LPBYTE src_buf, FX_DWORD src_size)
+{
+ bmp_ptr->next_in = src_buf;
+ bmp_ptr->avail_in = src_size;
+ bmp_ptr->skip_size = 0;
+}
+FX_DWORD _bmp_get_avail_input(bmp_decompress_struct_p bmp_ptr, FX_LPBYTE* avial_buf_ptr)
+{
+ if(avial_buf_ptr != NULL) {
+ *avial_buf_ptr = NULL;
+ if(bmp_ptr->avail_in > 0) {
+ *avial_buf_ptr = bmp_ptr->next_in;
+ }
+ }
+ return bmp_ptr->avail_in;
+}
+bmp_compress_struct_p _bmp_create_compress()
+{
+ bmp_compress_struct_p bmp_ptr;
+ bmp_ptr = FX_Alloc(bmp_compress_struct, 1);
+ if (bmp_ptr) {
+ FXSYS_memset32(bmp_ptr, 0, sizeof(bmp_compress_struct));
+ }
+ return bmp_ptr;
+}
+void _bmp_destroy_compress(bmp_compress_struct_p bmp_ptr)
+{
+ if (bmp_ptr) {
+ if (bmp_ptr->src_free && bmp_ptr->src_buf) {
+ FX_Free(bmp_ptr->src_buf);
+ }
+ FX_Free(bmp_ptr);
+ }
+}
+static void WriteFileHeader(BmpFileHeaderPtr head_ptr, FX_LPBYTE dst_buf)
+{
+ FX_DWORD offset;
+ offset = 0;
+ _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfType);
+ offset += 2;
+ _SetDWord_LSBFirst(&dst_buf[offset], head_ptr->bfSize);
+ offset += 4;
+ _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfReserved1);
+ offset += 2;
+ _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfReserved2);
+ offset += 2;
+ _SetDWord_LSBFirst(&dst_buf[offset], head_ptr->bfOffBits);
+ offset += 4;
+}
+static void WriteInfoHeader(BmpInfoHeaderPtr info_head_ptr, FX_LPBYTE dst_buf)
+{
+ FX_DWORD offset;
+ offset = sizeof(BmpFileHeader);
+ _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biSize);
+ offset += 4;
+ _SetDWord_LSBFirst(&dst_buf[offset], (FX_DWORD)info_head_ptr->biWidth);
+ offset += 4;
+ _SetDWord_LSBFirst(&dst_buf[offset], (FX_DWORD)info_head_ptr->biHeight);
+ offset += 4;
+ _SetWord_LSBFirst(&dst_buf[offset], info_head_ptr->biPlanes);
+ offset += 2;
+ _SetWord_LSBFirst(&dst_buf[offset], info_head_ptr->biBitCount);
+ offset += 2;
+ _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biCompression);
+ offset += 4;
+ _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biSizeImage);
+ offset += 4;
+ _SetDWord_LSBFirst(&dst_buf[offset], (FX_DWORD)info_head_ptr->biXPelsPerMeter);
+ offset += 4;
+ _SetDWord_LSBFirst(&dst_buf[offset], (FX_DWORD)info_head_ptr->biYPelsPerMeter);
+ offset += 4;
+ _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biClrUsed);
+ offset += 4;
+ _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biClrImportant);
+ offset += 4;
+}
+#ifdef BMP_SUPPORT_BITFIELD
+static void _bmp_encode_bitfields(bmp_compress_struct_p bmp_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_size)
+{
+ if (bmp_ptr->info_header.biBitCount != 16 && bmp_ptr->info_header.biBitCount != 32) {
+ return;
+ }
+ FX_DWORD size, dst_pos, i;
+ size = bmp_ptr->src_pitch * bmp_ptr->src_row * bmp_ptr->info_header.biBitCount / 16;
+ dst_pos = bmp_ptr->file_header.bfOffBits;
+ dst_size += size;
+ dst_buf = FX_Realloc(FX_BYTE, dst_buf, dst_size);
+ if (dst_buf == NULL) {
+ return;
+ }
+ FXSYS_memset32(&dst_buf[dst_pos], 0, size);
+ FX_DWORD mask_red;
+ FX_DWORD mask_green;
+ FX_DWORD mask_blue;
+ mask_red = 0x7C00;
+ mask_green = 0x03E0;
+ mask_blue = 0x001F;
+ if (bmp_ptr->info_header.biCompression == BMP_BITFIELDS) {
+ if (bmp_ptr->bit_type == BMP_BIT_565) {
+ mask_red = 0xF800;
+ mask_green = 0x07E0;
+ mask_blue = 0x001F;
+ }
+ if (bmp_ptr->info_header.biBitCount == 32) {
+ mask_red = 0xFF0000;
+ mask_green = 0x00FF00;
+ mask_blue = 0x0000FF;
+ }
+ _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_red);
+ dst_pos += 4;
+ _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_green);
+ dst_pos += 4;
+ _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_blue);
+ dst_pos += 4;
+ bmp_ptr->file_header.bfOffBits = dst_pos;
+ }
+ FX_BYTE blue_bits = 0;
+ FX_BYTE green_bits = 0;
+ FX_BYTE red_bits = 0;
+ for(i = 0; i < bmp_ptr->info_header.biBitCount; i++) {
+ if((mask_blue >> i) & 0x01) {
+ blue_bits++;
+ }
+ if((mask_green >> i) & 0x01) {
+ green_bits++;
+ }
+ if((mask_red >> i) & 0x01) {
+ red_bits++;
+ }
+ }
+ green_bits += blue_bits;
+ red_bits += green_bits;
+ blue_bits = 8 - blue_bits;
+ green_bits -= 8;
+ red_bits -= 8;
+ i = 0;
+ for (FX_INT32 row_num = bmp_ptr->src_row - 1; row_num > -1; row_num--, i = 0) {
+ while (i < bmp_ptr->src_width * bmp_ptr->src_bpp / 8) {
+ FX_BYTE b = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++];
+ FX_BYTE g = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++];
+ FX_BYTE r = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++];
+ if (bmp_ptr->src_bpp == 32) {
+ i++;
+ }
+ FX_DWORD pix_val = 0;
+ pix_val |= (b >> blue_bits) & mask_blue;
+ pix_val |= (g << green_bits) & mask_green;
+ pix_val |= (r << red_bits) & mask_red;
+ if (bmp_ptr->info_header.biBitCount == 16) {
+ _SetWord_LSBFirst(&dst_buf[dst_pos], (FX_WORD)pix_val);
+ dst_pos += 2;
+ } else {
+ _SetDWord_LSBFirst(&dst_buf[dst_pos], pix_val);
+ dst_pos += 4;
+ }
+ }
+ }
+ dst_size = dst_pos;
+}
+#endif
+static void _bmp_encode_rgb(bmp_compress_struct_p bmp_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_size)
+{
+ if (bmp_ptr->info_header.biBitCount == 16) {
+#ifdef BMP_SUPPORT_BITFIELD
+ _bmp_encode_bitfields(bmp_ptr, dst_buf, dst_size);
+#endif
+ return;
+ }
+ FX_DWORD size, dst_pos;
+ FX_DWORD dst_pitch = (bmp_ptr->src_width * bmp_ptr->info_header.biBitCount + 31) / 32 * 4;
+ size = dst_pitch * bmp_ptr->src_row;
+ dst_pos = bmp_ptr->file_header.bfOffBits;
+ dst_size += size;
+ dst_buf = FX_Realloc(FX_BYTE, dst_buf, dst_size);
+ if (dst_buf == NULL) {
+ return;
+ }
+ FXSYS_memset32(&dst_buf[dst_pos], 0, size);
+ for (FX_INT32 row_num = bmp_ptr->src_row - 1; row_num > -1; row_num--) {
+ FXSYS_memcpy32(&dst_buf[dst_pos], &bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch], bmp_ptr->src_pitch);
+ dst_pos += dst_pitch;
+ }
+ dst_size = dst_pos;
+}
+static FX_BYTE _bmp_rle8_search(FX_LPCBYTE buf, FX_INT32 len)
+{
+ FX_BYTE num;
+ num = 1;
+ while (num < len) {
+ if (buf[num - 1] != buf[num] || num == 0xFF) {
+ break;
+ }
+ num++;
+ }
+ return num;
+}
+static void _bmp_encode_rle8(bmp_compress_struct_p bmp_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_size)
+{
+ FX_DWORD size, dst_pos, index;
+ FX_BYTE rle[2] = {0};
+ size = bmp_ptr->src_pitch * bmp_ptr->src_row * 2;
+ dst_pos = bmp_ptr->file_header.bfOffBits;
+ dst_size += size;
+ dst_buf = FX_Realloc(FX_BYTE, dst_buf, dst_size);
+ if (dst_buf == NULL) {
+ return;
+ }
+ FXSYS_memset32(&dst_buf[dst_pos], 0, size);
+ for (FX_INT32 row_num = bmp_ptr->src_row - 1, i = 0; row_num > -1; ) {
+ index = row_num * bmp_ptr->src_pitch;
+ rle[0] = _bmp_rle8_search(&bmp_ptr->src_buf[index + i], size - index - i);
+ rle[1] = bmp_ptr->src_buf[index + i];
+ if (i + rle[0] >= (FX_INT32)bmp_ptr->src_pitch) {
+ rle[0] = FX_BYTE(bmp_ptr->src_pitch - i);
+ if (rle[0]) {
+ dst_buf[dst_pos++] = rle[0];
+ dst_buf[dst_pos++] = rle[1];
+ }
+ dst_buf[dst_pos++] = RLE_MARKER;
+ dst_buf[dst_pos++] = RLE_EOL;
+ i = 0;
+ row_num--;
+ } else {
+ i += rle[0];
+ dst_buf[dst_pos++] = rle[0];
+ dst_buf[dst_pos++] = rle[1];
+ }
+ }
+ dst_buf[dst_pos++] = RLE_MARKER;
+ dst_buf[dst_pos++] = RLE_EOI;
+ dst_size = dst_pos;
+}
+static FX_BYTE _bmp_rle4_search(FX_LPCBYTE buf, FX_INT32 len)
+{
+ FX_BYTE num;
+ num = 2;
+ while (num < len) {
+ if (buf[num - 2] != buf[num] || num == 0xFF) {
+ break;
+ }
+ num++;
+ }
+ return num;
+}
+static void _bmp_encode_rle4(bmp_compress_struct_p bmp_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_size)
+{
+ FX_DWORD size, dst_pos, index;
+ FX_BYTE rle[2] = {0};
+ size = bmp_ptr->src_pitch * bmp_ptr->src_row;
+ dst_pos = bmp_ptr->file_header.bfOffBits;
+ dst_size += size;
+ dst_buf = FX_Realloc(FX_BYTE, dst_buf, dst_size);
+ if (dst_buf == NULL) {
+ return;
+ }
+ FXSYS_memset32(&dst_buf[dst_pos], 0, size);
+ for (FX_INT32 row_num = bmp_ptr->src_row - 1, i = 0; row_num > -1; rle[1] = 0) {
+ index = row_num * bmp_ptr->src_pitch;
+ rle[0] = _bmp_rle4_search(&bmp_ptr->src_buf[index + i], size - index - i);
+ rle[1] |= (bmp_ptr->src_buf[index + i] & 0x0f) << 4;
+ rle[1] |= bmp_ptr->src_buf[index + i + 1] & 0x0f;
+ if (i + rle[0] >= (FX_INT32)bmp_ptr->src_pitch) {
+ rle[0] = FX_BYTE(bmp_ptr->src_pitch - i);
+ if (rle[0]) {
+ dst_buf[dst_pos++] = rle[0];
+ dst_buf[dst_pos++] = rle[1];
+ }
+ dst_buf[dst_pos++] = RLE_MARKER;
+ dst_buf[dst_pos++] = RLE_EOL;
+ i = 0;
+ row_num--;
+ } else {
+ i += rle[0];
+ dst_buf[dst_pos++] = rle[0];
+ dst_buf[dst_pos++] = rle[1];
+ }
+ }
+ dst_buf[dst_pos++] = RLE_MARKER;
+ dst_buf[dst_pos++] = RLE_EOI;
+ dst_size = dst_pos;
+}
+FX_BOOL _bmp_encode_image( bmp_compress_struct_p bmp_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_size )
+{
+ FX_DWORD head_size = sizeof(BmpFileHeader) + sizeof(BmpInfoHeader);
+ FX_DWORD pal_size = sizeof(FX_DWORD) * bmp_ptr->pal_num;
+ if (bmp_ptr->info_header.biClrUsed > 0 && bmp_ptr->info_header.biClrUsed < bmp_ptr->pal_num) {
+ pal_size = sizeof(FX_DWORD) * bmp_ptr->info_header.biClrUsed;
+ }
+ dst_size = head_size + sizeof(FX_DWORD) * bmp_ptr->pal_num;
+ dst_buf = FX_AllocNL(FX_BYTE, dst_size);
+ if (dst_buf == NULL) {
+ return FALSE;
+ }
+ FXSYS_memset32(dst_buf, 0, dst_size);
+ bmp_ptr->file_header.bfOffBits = head_size;
+ if (bmp_ptr->pal_ptr && pal_size) {
+ FXSYS_memcpy32(&dst_buf[head_size], bmp_ptr->pal_ptr, pal_size);
+ bmp_ptr->file_header.bfOffBits += pal_size;
+ }
+ WriteInfoHeader(&bmp_ptr->info_header, dst_buf);
+ switch(bmp_ptr->info_header.biCompression) {
+ case BMP_RGB:
+ _bmp_encode_rgb(bmp_ptr, dst_buf, dst_size);
+ break;
+ case BMP_BITFIELDS:
+#ifdef BMP_SUPPORT_BITFIELD
+ _bmp_encode_bitfields(bmp_ptr, dst_buf, dst_size);
+#endif
+ break;
+ case BMP_RLE8:
+ _bmp_encode_rle8(bmp_ptr, dst_buf, dst_size);
+ break;
+ case BMP_RLE4:
+ _bmp_encode_rle4(bmp_ptr, dst_buf, dst_size);
+ break;
+ default:
+ ;
+ }
+ bmp_ptr->file_header.bfSize = dst_size;
+ WriteFileHeader(&bmp_ptr->file_header, dst_buf);
+ return TRUE;
+}
diff --git a/core/src/fxcodec/lbmp/fx_bmp.h b/core/src/fxcodec/lbmp/fx_bmp.h
new file mode 100644
index 0000000..1603770
--- /dev/null
+++ b/core/src/fxcodec/lbmp/fx_bmp.h
@@ -0,0 +1,142 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef _FX_BASIC_H_
+#include "../../../include/fxcrt/fx_basic.h"
+#endif
+#define BMP_SUPPORT_BITFIELD
+#define BMP_WIDTHBYTES(width,bitCount) ((width*bitCount) + 31)/32*4
+#define BMP_PAL_ENCODE(a,r,g,b) (((FX_DWORD)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
+#define BMP_D_STATUS_HEADER 0x01
+#define BMP_D_STATUS_PAL 0x02
+#define BMP_D_STATUS_DATA_PRE 0x03
+#define BMP_D_STATUS_DATA 0x04
+#define BMP_D_STATUS_TAIL 0x00
+#define BMP_SIGNATURE 0x4D42
+#define BMP_PAL_NEW 0
+#define BMP_PAL_OLD 1
+#define RLE_MARKER 0
+#define RLE_EOL 0
+#define RLE_EOI 1
+#define RLE_DELTA 2
+#define BMP_RGB 0L
+#define BMP_RLE8 1L
+#define BMP_RLE4 2L
+#define BMP_BITFIELDS 3L
+#define BMP_BIT_555 0
+#define BMP_BIT_565 1
+#define BMP_MAX_ERROR_SIZE 256
+#pragma pack(1)
+typedef struct tagBmpFileHeader {
+ FX_WORD bfType;
+ FX_DWORD bfSize;
+ FX_WORD bfReserved1;
+ FX_WORD bfReserved2;
+ FX_DWORD bfOffBits;
+} BmpFileHeader, *BmpFileHeaderPtr;
+typedef struct tagBmpCoreHeader {
+ FX_DWORD bcSize;
+ FX_WORD bcWidth;
+ FX_WORD bcHeight;
+ FX_WORD bcPlanes;
+ FX_WORD bcBitCount;
+} BmpCoreHeader, *BmpCoreHeaderPtr;
+typedef struct tagBmpInfoHeader {
+ FX_DWORD biSize;
+ FX_INT32 biWidth;
+ FX_INT32 biHeight;
+ FX_WORD biPlanes;
+ FX_WORD biBitCount;
+ FX_DWORD biCompression;
+ FX_DWORD biSizeImage;
+ FX_INT32 biXPelsPerMeter;
+ FX_INT32 biYPelsPerMeter;
+ FX_DWORD biClrUsed;
+ FX_DWORD biClrImportant;
+} BmpInfoHeader, *BmpInfoHeaderPtr;
+#pragma pack()
+typedef struct tag_bmp_decompress_struct bmp_decompress_struct;
+typedef bmp_decompress_struct *bmp_decompress_struct_p;
+typedef bmp_decompress_struct_p *bmp_decompress_struct_pp;
+struct tag_bmp_decompress_struct {
+ jmp_buf jmpbuf;
+ FX_LPSTR err_ptr;
+ void (*_bmp_error_fn)(bmp_decompress_struct_p gif_ptr, FX_LPCSTR err_msg);
+
+ void* context_ptr;
+
+ BmpFileHeaderPtr bmp_header_ptr;
+ BmpInfoHeaderPtr bmp_infoheader_ptr;
+ FX_INT32 width;
+ FX_INT32 height;
+ FX_DWORD compress_flag;
+ FX_INT32 components;
+ FX_INT32 src_row_bytes;
+ FX_INT32 out_row_bytes;
+ FX_LPBYTE out_row_buffer;
+ FX_WORD bitCounts;
+ FX_DWORD color_used;
+ FX_BOOL imgTB_flag;
+ FX_INT32 pal_num;
+ FX_INT32 pal_type;
+ FX_DWORD* pal_ptr;
+ FX_DWORD data_size;
+ FX_DWORD img_data_offset;
+ FX_DWORD img_ifh_size;
+ FX_INT32 row_num;
+ FX_INT32 col_num;
+ FX_INT32 dpi_x;
+ FX_INT32 dpi_y;
+#ifdef BMP_SUPPORT_BITFIELD
+ FX_DWORD mask_red;
+ FX_DWORD mask_green;
+ FX_DWORD mask_blue;
+#endif
+
+ FX_BOOL (*_bmp_get_data_position_fn)(bmp_decompress_struct_p bmp_ptr, FX_DWORD cur_pos);
+ void (*_bmp_get_row_fn)(bmp_decompress_struct_p bmp_ptr, FX_INT32 row_num, FX_LPBYTE row_buf);
+ FX_LPBYTE next_in;
+ FX_DWORD avail_in;
+ FX_DWORD skip_size;
+ FX_INT32 decode_status;
+};
+void _bmp_error(bmp_decompress_struct_p bmp_ptr, FX_LPCSTR err_msg);
+bmp_decompress_struct_p _bmp_create_decompress();
+void _bmp_destroy_decompress(bmp_decompress_struct_pp bmp_ptr_ptr);
+FX_INT32 _bmp_read_header(bmp_decompress_struct_p bmp_ptr);
+FX_INT32 _bmp_decode_image(bmp_decompress_struct_p bmp_ptr);
+FX_INT32 _bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr);
+FX_INT32 _bmp_decode_rle8(bmp_decompress_struct_p bmp_ptr);
+FX_INT32 _bmp_decode_rle4(bmp_decompress_struct_p bmp_ptr);
+FX_LPBYTE _bmp_read_data(bmp_decompress_struct_p bmp_ptr, FX_LPBYTE* des_buf_pp, FX_DWORD data_size);
+void _bmp_save_decoding_status(bmp_decompress_struct_p bmp_ptr, FX_INT32 status);
+void _bmp_input_buffer(bmp_decompress_struct_p bmp_ptr, FX_LPBYTE src_buf, FX_DWORD src_size);
+FX_DWORD _bmp_get_avail_input(bmp_decompress_struct_p bmp_ptr, FX_LPBYTE* avial_buf_ptr);
+#define BMP_PTR_NOT_NULL(ptr,bmp_ptr) if(ptr == NULL){ \
+ _bmp_error(bmp_ptr,"Out Of Memory");\
+ return 0; \
+ }
+typedef struct tag_bmp_compress_struct bmp_compress_struct;
+typedef bmp_compress_struct *bmp_compress_struct_p;
+typedef bmp_compress_struct_p *bmp_compress_struct_pp;
+struct tag_bmp_compress_struct {
+ BmpFileHeader file_header;
+ BmpInfoHeader info_header;
+ FX_LPBYTE src_buf;
+ FX_DWORD src_pitch;
+ FX_DWORD src_row;
+ FX_BYTE src_bpp;
+ FX_DWORD src_width;
+ FX_BOOL src_free;
+ FX_DWORD* pal_ptr;
+ FX_WORD pal_num;
+#ifdef BMP_SUPPORT_BITFIELD
+ FX_BYTE bit_type;
+#endif
+};
+bmp_compress_struct_p _bmp_create_compress();
+void _bmp_destroy_compress(bmp_compress_struct_p bmp_ptr);
+FX_BOOL _bmp_encode_image(bmp_compress_struct_p bmp_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_size);
diff --git a/core/src/fxcodec/lgif/fx_gif.cpp b/core/src/fxcodec/lgif/fx_gif.cpp
new file mode 100644
index 0000000..8f5794e
--- /dev/null
+++ b/core/src/fxcodec/lgif/fx_gif.cpp
@@ -0,0 +1,1368 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "fx_gif.h"
+void CGifLZWDecoder::Input(FX_LPBYTE src_buf, FX_DWORD src_size)
+{
+ next_in = src_buf;
+ avail_in = src_size;
+}
+FX_DWORD CGifLZWDecoder::GetAvailInput()
+{
+ return avail_in;
+}
+void CGifLZWDecoder::InitTable(FX_BYTE code_len)
+{
+ code_size = code_len;
+ code_clear = 1 << code_size;
+ code_end = code_clear + 1;
+ bits_left = 0;
+ code_store = 0;
+ next_in = NULL;
+ avail_in = 0;
+ stack_size = 0;
+ code_first = 0;
+ ClearTable();
+}
+void CGifLZWDecoder::ClearTable()
+{
+ code_size_cur = code_size + 1;
+ code_next = code_end + 1;
+ code_old = (FX_WORD) - 1;
+ FXSYS_memset32(code_table, 0, sizeof(tag_Table)*GIF_MAX_LZW_CODE);
+ FXSYS_memset32(stack, 0, GIF_MAX_LZW_CODE);
+ for (FX_WORD i = 0; i < code_clear; i++) {
+ code_table[i].suffix = (FX_BYTE)i;
+ }
+}
+void CGifLZWDecoder::DecodeString(FX_WORD code)
+{
+ stack_size = 0;
+ while (TRUE) {
+ ASSERT(code <= code_next);
+ if(code < code_clear || code > code_next) {
+ break;
+ }
+ stack[GIF_MAX_LZW_CODE - 1 - stack_size++] = code_table[code].suffix;
+ code = code_table[code].prefix;
+ }
+ stack[GIF_MAX_LZW_CODE - 1 - stack_size++] = (FX_BYTE)code;
+ code_first = (FX_BYTE)code;
+}
+void CGifLZWDecoder::AddCode(FX_WORD prefix_code, FX_BYTE append_char)
+{
+ if(code_next == GIF_MAX_LZW_CODE) {
+ return;
+ }
+ code_table[code_next].prefix = prefix_code;
+ code_table[code_next].suffix = append_char;
+ if(++code_next < GIF_MAX_LZW_CODE) {
+ if(code_next >> code_size_cur) {
+ code_size_cur++;
+ }
+ }
+}
+FX_INT32 CGifLZWDecoder::Decode(FX_LPBYTE des_buf, FX_DWORD& des_size)
+{
+ if(des_size == 0) {
+ return 3;
+ }
+ FX_DWORD i = 0;
+ if(stack_size != 0) {
+ if(des_size < stack_size) {
+ FXSYS_memcpy32(des_buf, &stack[GIF_MAX_LZW_CODE - stack_size], des_size);
+ stack_size -= (FX_WORD)des_size;
+ return 3;
+ }
+ FXSYS_memcpy32(des_buf, &stack[GIF_MAX_LZW_CODE - stack_size], stack_size);
+ des_buf += stack_size;
+ i += stack_size;
+ stack_size = 0;
+ }
+ FX_WORD code = 0;
+ while(i <= des_size && (avail_in > 0 || bits_left >= code_size_cur)) {
+ if(code_size_cur > 12) {
+ if(err_msg_ptr) {
+ FXSYS_strncpy(err_msg_ptr, "Code Length Out Of Range", GIF_MAX_ERROR_SIZE - 1);
+ }
+ return 0;
+ }
+ if (avail_in > 0) {
+ code_store |= (*next_in++) << bits_left;
+ avail_in--;
+ bits_left += 8;
+ }
+ while (bits_left >= code_size_cur) {
+ code = (FX_WORD)code_store & ((1 << code_size_cur) - 1);
+ code_store >>= code_size_cur;
+ bits_left -= code_size_cur;
+ if(code == code_clear) {
+ ClearTable();
+ continue;
+ } else if (code == code_end) {
+ des_size = i;
+ return 1;
+ } else {
+ if(code_old != (FX_WORD) - 1) {
+ if(code_next < GIF_MAX_LZW_CODE) {
+ if(code == code_next) {
+ AddCode(code_old, code_first);
+ DecodeString(code);
+ } else if(code > code_next) {
+ if(err_msg_ptr) {
+ FXSYS_strncpy(err_msg_ptr, "Decode Error, Out Of Range", GIF_MAX_ERROR_SIZE - 1);
+ }
+ return 0;
+ } else {
+ DecodeString(code);
+ FX_BYTE append_char = stack[GIF_MAX_LZW_CODE - stack_size];
+ AddCode(code_old, append_char);
+ }
+ }
+ } else {
+ DecodeString(code);
+ }
+ code_old = code;
+ if(i + stack_size > des_size) {
+ FXSYS_memcpy32(des_buf, &stack[GIF_MAX_LZW_CODE - stack_size], des_size - i);
+ stack_size -= (FX_WORD)(des_size - i);
+ return 3;
+ }
+ FXSYS_memcpy32(des_buf, &stack[GIF_MAX_LZW_CODE - stack_size], stack_size);
+ des_buf += stack_size;
+ i += stack_size;
+ stack_size = 0;
+ }
+ }
+ }
+ if(avail_in == 0) {
+ des_size = i;
+ return 2;
+ }
+ return 0;
+}
+static FX_BOOL _gif_grow_buf(FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD size)
+{
+ if (dst_len < size) {
+ FX_DWORD len_org = dst_len;
+ while (dst_buf && dst_len < size) {
+ dst_len <<= 1;
+ dst_buf = FX_Realloc(FX_BYTE, dst_buf, dst_len);
+ }
+ if (dst_buf == NULL) {
+ dst_len = size;
+ dst_buf = FX_Realloc(FX_BYTE, dst_buf, dst_len);
+ if (dst_buf == NULL) {
+ return FALSE;
+ }
+ }
+ FXSYS_memset32(dst_buf + len_org, 0, dst_len - len_org);
+ return dst_buf != NULL;
+ }
+ return TRUE;
+}
+static inline void _gif_cut_index(FX_BYTE& val, FX_DWORD index, FX_BYTE index_bit, FX_BYTE index_bit_use, FX_BYTE bit_use)
+{
+ FX_DWORD cut = ((1 << (index_bit - index_bit_use)) - 1) << index_bit_use;
+ val |= ((index & cut) >> index_bit_use) << bit_use;
+}
+static inline FX_BYTE _gif_cut_buf(FX_LPCBYTE buf, FX_DWORD& offset, FX_BYTE bit_cut, FX_BYTE& bit_offset, FX_DWORD& bit_num)
+{
+ if (bit_cut != 8) {
+ FX_WORD index = 0;
+ index |= ((1 << bit_cut) - 1) << (7 - bit_offset);
+ FX_BYTE ret = ((index & buf[offset]) >> (7 - bit_offset));
+ bit_offset += bit_cut;
+ if (bit_offset >= 8) {
+ if (bit_offset > 8) {
+ ret |= ((index & (buf[offset + 1] << 8)) >> 8);
+ }
+ bit_offset -= 8;
+ offset ++;
+ }
+ bit_num += bit_cut;
+ return ret;
+ }
+ bit_num += bit_cut;
+ return buf[offset++];
+}
+CGifLZWEncoder::CGifLZWEncoder()
+{
+ FXSYS_memset32(this, 0, sizeof(CGifLZWEncoder));
+}
+CGifLZWEncoder::~CGifLZWEncoder()
+{
+}
+void CGifLZWEncoder::ClearTable()
+{
+ index_bit_cur = code_size + 1;
+ index_num = code_end + 1;
+ table_cur = code_end + 1;
+ for (FX_WORD i = 0; i < GIF_MAX_LZW_CODE; i++) {
+ code_table[i].prefix = 0;
+ code_table[i].suffix = 0;
+ }
+}
+void CGifLZWEncoder::Start( FX_BYTE code_len, FX_LPCBYTE src_buf, FX_LPBYTE& dst_buf, FX_DWORD& offset)
+{
+ code_size = code_len + 1;
+ src_bit_cut = code_size;
+ if (code_len == 0) {
+ src_bit_cut = 1;
+ code_size = 2;
+ }
+ code_clear = 1 << code_size;
+ code_end = code_clear + 1;
+ dst_buf[offset++] = code_size;
+ bit_offset = 0;
+ ClearTable();
+ src_offset = 0;
+ src_bit_offset = 0;
+ src_bit_num = 0;
+ code_table[index_num].prefix = _gif_cut_buf(src_buf, src_offset, src_bit_cut, src_bit_offset, src_bit_num);
+ code_table[index_num].suffix = _gif_cut_buf(src_buf, src_offset, src_bit_cut, src_bit_offset, src_bit_num);
+}
+void CGifLZWEncoder::WriteBlock(FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset)
+{
+ if (!_gif_grow_buf(dst_buf, dst_len, offset + GIF_DATA_BLOCK + 1)) {
+ longjmp(jmp, 1);
+ }
+ dst_buf[offset++] = index_buf_len;
+ FXSYS_memcpy32(&dst_buf[offset], index_buf, index_buf_len);
+ offset += index_buf_len;
+ FXSYS_memset32(index_buf, 0, GIF_DATA_BLOCK);
+ index_buf_len = 0;
+}
+void CGifLZWEncoder::EncodeString( FX_DWORD index, FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset )
+{
+ FX_BYTE index_bit_use;
+ index_bit_use = 0;
+ if (index_buf_len == GIF_DATA_BLOCK) {
+ WriteBlock(dst_buf, dst_len, offset);
+ }
+ _gif_cut_index(index_buf[index_buf_len], index, index_bit_cur, index_bit_use, bit_offset);
+ if (index_bit_cur <= (8 - bit_offset)) {
+ bit_offset += index_bit_cur;
+ } else if (index_bit_cur <= (16 - bit_offset)) {
+ index_bit_use += (8 - bit_offset);
+ bit_offset = 0;
+ index_buf_len++;
+ if (index_buf_len == GIF_DATA_BLOCK) {
+ WriteBlock(dst_buf, dst_len, offset);
+ }
+ _gif_cut_index(index_buf[index_buf_len], index, index_bit_cur, index_bit_use, bit_offset);
+ bit_offset = index_bit_cur - index_bit_use;
+ } else {
+ index_bit_use += (8 - bit_offset);
+ bit_offset = 0;
+ index_buf_len++;
+ if (index_buf_len == GIF_DATA_BLOCK) {
+ WriteBlock(dst_buf, dst_len, offset);
+ }
+ _gif_cut_index(index_buf[index_buf_len], index, index_bit_cur, index_bit_use, bit_offset);
+ index_bit_use += 8;
+ bit_offset = 0;
+ index_buf_len++;
+ if (index_buf_len == GIF_DATA_BLOCK) {
+ WriteBlock(dst_buf, dst_len, offset);
+ }
+ _gif_cut_index(index_buf[index_buf_len], index, index_bit_cur, index_bit_use, bit_offset);
+ bit_offset = index_bit_cur - index_bit_use;
+ }
+ if (bit_offset == 8) {
+ bit_offset = 0;
+ index_buf_len++;
+ if (index_buf_len == GIF_DATA_BLOCK) {
+ WriteBlock(dst_buf, dst_len, offset);
+ }
+ }
+ if (index == code_end) {
+ index_buf_len++;
+ WriteBlock(dst_buf, dst_len, offset);
+ }
+ if (index_num++ >> index_bit_cur) {
+ index_bit_cur++;
+ }
+}
+FX_BOOL CGifLZWEncoder::Encode( FX_LPCBYTE src_buf, FX_DWORD src_len, FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset )
+{
+ FX_BYTE suffix;
+ if (setjmp(jmp)) {
+ return FALSE;
+ }
+ while(src_bit_num < src_len) {
+ if (!LookUpInTable(src_buf, src_offset, src_bit_offset)) {
+ EncodeString(code_table[index_num].prefix, dst_buf, dst_len, offset);
+ if (index_num == GIF_MAX_LZW_CODE) {
+ suffix = code_table[index_num - 1].suffix;
+ EncodeString(code_clear, dst_buf, dst_len, offset);
+ ClearTable();
+ code_table[index_num].prefix = suffix;
+ code_table[index_num].suffix = _gif_cut_buf(src_buf, src_offset, src_bit_cut, src_bit_offset, src_bit_num);
+ } else {
+ code_table[index_num].prefix = code_table[index_num - 1].suffix;
+ code_table[index_num].suffix = _gif_cut_buf(src_buf, src_offset, src_bit_cut, src_bit_offset, src_bit_num);
+ }
+ }
+ }
+ src_offset = 0;
+ src_bit_offset = 0;
+ src_bit_num = 0;
+ return TRUE;
+}
+FX_BOOL CGifLZWEncoder::LookUpInTable( FX_LPCBYTE buf, FX_DWORD& offset, FX_BYTE& bit_offset )
+{
+ for (FX_WORD i = table_cur; i < index_num; i++) {
+ if (code_table[i].prefix == code_table[index_num].prefix &&
+ code_table[i].suffix == code_table[index_num].suffix) {
+ code_table[index_num].prefix = i;
+ code_table[index_num].suffix = _gif_cut_buf(buf, offset, src_bit_cut, bit_offset, src_bit_num);
+ table_cur = i;
+ return TRUE;
+ }
+ }
+ table_cur = code_end + 1;
+ return FALSE;
+}
+void CGifLZWEncoder::Finish(FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset)
+{
+ EncodeString(code_table[index_num].prefix, dst_buf, dst_len, offset);
+ EncodeString(code_end, dst_buf, dst_len, offset);
+ bit_offset = 0;
+ ClearTable();
+}
+gif_decompress_struct_p _gif_create_decompress()
+{
+ gif_decompress_struct_p gif_ptr = (gif_decompress_struct*)FX_Alloc(FX_BYTE, sizeof(gif_decompress_struct));
+ if(gif_ptr == NULL) {
+ return NULL;
+ }
+ FXSYS_memset32(gif_ptr, 0, sizeof(gif_decompress_struct));
+ gif_ptr->decode_status = GIF_D_STATUS_SIG;
+ gif_ptr->img_ptr_arr_ptr = FX_NEW CFX_ArrayTemplate<GifImage*>;
+ if(gif_ptr->img_ptr_arr_ptr == NULL) {
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+#ifdef GIF_SUPPORT_COMMENT_EXTENSION
+ gif_ptr->cmt_data_ptr = FX_NEW CFX_ByteString;
+ if(gif_ptr->cmt_data_ptr == NULL) {
+ delete gif_ptr->img_ptr_arr_ptr;
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+#endif
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ gif_ptr->pt_ptr_arr_ptr = FX_NEW CFX_ArrayTemplate<GifPlainText*>;
+ if(gif_ptr->pt_ptr_arr_ptr == NULL) {
+ delete(gif_ptr->cmt_data_ptr);
+ delete gif_ptr->img_ptr_arr_ptr;
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+#endif
+ return gif_ptr;
+}
+void _gif_destroy_decompress(gif_decompress_struct_pp gif_ptr_ptr)
+{
+ if(gif_ptr_ptr == NULL || *gif_ptr_ptr == NULL) {
+ return;
+ }
+ gif_decompress_struct_p gif_ptr = *gif_ptr_ptr;
+ *gif_ptr_ptr = NULL;
+ if(gif_ptr->global_pal_ptr != NULL) {
+ FX_Free(gif_ptr->global_pal_ptr);
+ }
+ if(gif_ptr->img_decoder_ptr != NULL) {
+ delete gif_ptr->img_decoder_ptr;
+ }
+ if(gif_ptr->img_ptr_arr_ptr != NULL) {
+ FX_INT32 size_img_arr = gif_ptr->img_ptr_arr_ptr->GetSize();
+ for (FX_INT32 i = 0; i < size_img_arr; i++) {
+ GifImage* p = gif_ptr->img_ptr_arr_ptr->GetAt(i);
+ if(p->image_info_ptr != NULL) {
+ FX_Free(p->image_info_ptr);
+ }
+ if(p->image_gce_ptr != NULL) {
+ FX_Free(p->image_gce_ptr);
+ }
+ if(p->image_row_buf != NULL) {
+ FX_Free(p->image_row_buf);
+ }
+ if(p->local_pal_ptr != NULL && p->local_pal_ptr != gif_ptr->global_pal_ptr) {
+ FX_Free(p->local_pal_ptr);
+ }
+ FX_Free(p);
+ }
+ gif_ptr->img_ptr_arr_ptr->RemoveAll();
+ delete gif_ptr->img_ptr_arr_ptr;
+ }
+#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
+ if(gif_ptr->app_data != NULL) {
+ FX_Free(gif_ptr->app_data);
+ }
+#endif
+#ifdef GIF_SUPPORT_COMMENT_EXTENSION
+ if(gif_ptr->cmt_data_ptr != NULL) {
+ delete gif_ptr->cmt_data_ptr;
+ }
+#endif
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ if(gif_ptr->gce_ptr != NULL) {
+ FX_Free(gif_ptr->gce_ptr);
+ }
+#endif
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ if(gif_ptr->pt_ptr_arr_ptr != NULL) {
+ FX_INT32 size_pt_arr = gif_ptr->pt_ptr_arr_ptr->GetSize();
+ for (FX_INT32 i = 0; i < size_pt_arr; i++) {
+ GifPlainText* p = gif_ptr->pt_ptr_arr_ptr->GetAt(i);
+ if(p->gce_ptr != NULL) {
+ FX_Free(p->gce_ptr);
+ }
+ if(p->pte_ptr != NULL) {
+ FX_Free(p->pte_ptr);
+ }
+ if(p->string_ptr != NULL) {
+ delete p->string_ptr;
+ }
+ }
+ gif_ptr->pt_ptr_arr_ptr->RemoveAll();
+ delete gif_ptr->pt_ptr_arr_ptr;
+ }
+#endif
+ FX_Free(gif_ptr);
+}
+gif_compress_struct_p _gif_create_compress()
+{
+ gif_compress_struct_p gif_ptr = (gif_compress_struct*)FX_Alloc(FX_BYTE, sizeof(gif_compress_struct));
+ if (gif_ptr == NULL) {
+ return NULL;
+ }
+ FXSYS_memset32(gif_ptr, 0, sizeof(gif_compress_struct));
+ gif_ptr->img_encoder_ptr = FX_NEW CGifLZWEncoder;
+ if (gif_ptr->img_encoder_ptr == NULL) {
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+ gif_ptr->header_ptr = (GifHeader*)FX_Alloc(FX_BYTE, sizeof(GifHeader));
+ if (gif_ptr->header_ptr == NULL) {
+ delete(gif_ptr->img_encoder_ptr);
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+ FXSYS_memcpy32(gif_ptr->header_ptr->signature, GIF_SIGNATURE, 3);
+ FXSYS_memcpy32(gif_ptr->header_ptr->version, "89a", 3);
+ gif_ptr->lsd_ptr = (GifLSD*)FX_Alloc(FX_BYTE, sizeof(GifLSD));
+ if (gif_ptr->lsd_ptr == NULL) {
+ FX_Free(gif_ptr->header_ptr);
+ delete(gif_ptr->img_encoder_ptr);
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+ FXSYS_memset32(gif_ptr->lsd_ptr, 0, sizeof(GifLSD));
+ gif_ptr->image_info_ptr = (GifImageInfo*)FX_Alloc(FX_BYTE, sizeof(GifImageInfo));
+ if (gif_ptr->image_info_ptr == NULL) {
+ FX_Free(gif_ptr->lsd_ptr);
+ FX_Free(gif_ptr->header_ptr);
+ delete(gif_ptr->img_encoder_ptr);
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+ FXSYS_memset32(gif_ptr->image_info_ptr, 0, sizeof(GifImageInfo));
+#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
+ FXSYS_memcpy32(gif_ptr->app_identify, "netscape", 8);
+ FXSYS_memcpy32(gif_ptr->app_authentication, "2.0", 3);
+#endif
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ gif_ptr->gce_ptr = (GifGCE*)FX_Alloc(FX_BYTE, sizeof(GifGCE));
+ if (gif_ptr->gce_ptr == NULL) {
+ FX_Free(gif_ptr->image_info_ptr);
+ FX_Free(gif_ptr->lsd_ptr);
+ FX_Free(gif_ptr->header_ptr);
+ delete(gif_ptr->img_encoder_ptr);
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+#endif
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ gif_ptr->pte_ptr = (GifPTE*)FX_Alloc(FX_BYTE, sizeof(GifPTE));
+ if (gif_ptr->pte_ptr == NULL) {
+ FX_Free(gif_ptr->gce_ptr);
+ FX_Free(gif_ptr->image_info_ptr);
+ FX_Free(gif_ptr->lsd_ptr);
+ FX_Free(gif_ptr->header_ptr);
+ delete(gif_ptr->img_encoder_ptr);
+ FX_Free(gif_ptr);
+ return NULL;
+ }
+ FXSYS_memset32(gif_ptr->pte_ptr, 0, sizeof(GifPTE));
+ gif_ptr->pte_ptr->block_size = 12;
+#endif
+ return gif_ptr;
+}
+void _gif_destroy_compress(gif_compress_struct_pp gif_ptr_ptr)
+{
+ if(gif_ptr_ptr == NULL || *gif_ptr_ptr == NULL) {
+ return;
+ }
+ gif_compress_struct_p gif_ptr = *gif_ptr_ptr;
+ *gif_ptr_ptr = NULL;
+ if(gif_ptr->header_ptr != NULL) {
+ FX_Free(gif_ptr->header_ptr);
+ }
+ if(gif_ptr->lsd_ptr != NULL) {
+ FX_Free(gif_ptr->lsd_ptr);
+ }
+ if(gif_ptr->global_pal != NULL) {
+ FX_Free(gif_ptr->global_pal);
+ }
+ if(gif_ptr->image_info_ptr != NULL) {
+ FX_Free(gif_ptr->image_info_ptr);
+ }
+ if(gif_ptr->local_pal != NULL) {
+ FX_Free(gif_ptr->local_pal);
+ }
+ if(gif_ptr->img_encoder_ptr != NULL) {
+ delete gif_ptr->img_encoder_ptr;
+ }
+#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
+ if(gif_ptr->app_data != NULL) {
+ FX_Free(gif_ptr->app_data);
+ }
+#endif
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ if(gif_ptr->gce_ptr != NULL) {
+ FX_Free(gif_ptr->gce_ptr);
+ }
+#endif
+#ifdef GIF_SUPPORT_COMMENT_EXTENSION
+ if(gif_ptr->cmt_data_ptr != NULL) {
+ FX_Free(gif_ptr->cmt_data_ptr);
+ }
+#endif
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ if(gif_ptr->pte_ptr != NULL) {
+ FX_Free(gif_ptr->pte_ptr);
+ }
+#endif
+ FX_Free(gif_ptr);
+}
+void _gif_error(gif_decompress_struct_p gif_ptr, FX_LPCSTR err_msg)
+{
+ if(gif_ptr != NULL && gif_ptr->_gif_error_fn != NULL) {
+ gif_ptr->_gif_error_fn(gif_ptr, err_msg);
+ }
+}
+void _gif_warn(gif_decompress_struct_p gif_ptr, FX_LPCSTR err_msg) {}
+FX_INT32 _gif_read_header(gif_decompress_struct_p gif_ptr)
+{
+ if(gif_ptr == NULL) {
+ return 0;
+ }
+ FX_DWORD skip_size_org = gif_ptr->skip_size;
+ ASSERT(sizeof(GifHeader) == 6);
+ GifHeader* gif_header_ptr = NULL;
+ if(_gif_read_data(gif_ptr, (FX_LPBYTE*)&gif_header_ptr, 6) == NULL) {
+ return 2;
+ }
+ if(FXSYS_strncmp(gif_header_ptr->signature, GIF_SIGNATURE, 3) != 0 ||
+ gif_header_ptr->version[0] != '8' ||
+ gif_header_ptr->version[2] != 'a') {
+ _gif_error(gif_ptr, "Not A Gif Image");
+ return 0;
+ }
+ ASSERT(sizeof(GifLSD) == 7);
+ GifLSD* gif_lsd_ptr = NULL;
+ if(_gif_read_data(gif_ptr, (FX_LPBYTE*)&gif_lsd_ptr, 7) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ if(((GifGF*)&gif_lsd_ptr->global_flag)->global_pal) {
+ gif_ptr->global_pal_num = 2 << ((GifGF*)&gif_lsd_ptr->global_flag)->pal_bits;
+ ASSERT(sizeof(GifPalette) == 3);
+ FX_INT32 global_pal_size = gif_ptr->global_pal_num * 3;
+ FX_LPBYTE global_pal_ptr = NULL;
+ if (_gif_read_data(gif_ptr, &global_pal_ptr, global_pal_size) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ gif_ptr->global_sort_flag = ((GifGF*)&gif_lsd_ptr->global_flag)->sort_flag;
+ gif_ptr->global_color_resolution = ((GifGF*)&gif_lsd_ptr->global_flag)->color_resolution;
+ if(gif_ptr->global_pal_ptr != NULL) {
+ FX_Free(gif_ptr->global_pal_ptr);
+ }
+ gif_ptr->global_pal_ptr = NULL;
+ gif_ptr->global_pal_ptr = (GifPalette*)FX_Alloc(FX_BYTE, global_pal_size);
+ GIF_PTR_NOT_NULL(gif_ptr->global_pal_ptr, gif_ptr);
+ FXSYS_memcpy32(gif_ptr->global_pal_ptr, global_pal_ptr, global_pal_size);
+ }
+ gif_ptr->width = (int)_GetWord_LSBFirst((FX_LPBYTE)&gif_lsd_ptr->width);
+ gif_ptr->height = (int)_GetWord_LSBFirst((FX_LPBYTE)&gif_lsd_ptr->height);
+ gif_ptr->bc_index = gif_lsd_ptr->bc_index;
+ gif_ptr->pixel_aspect = gif_lsd_ptr->pixel_aspect;
+ return 1;
+}
+FX_INT32 _gif_get_frame(gif_decompress_struct_p gif_ptr)
+{
+ if(gif_ptr == NULL) {
+ return 0;
+ }
+ FX_INT32 ret = 1;
+ while (TRUE) {
+ switch(gif_ptr->decode_status) {
+ case GIF_D_STATUS_TAIL:
+ return 1;
+ case GIF_D_STATUS_SIG: {
+ FX_LPBYTE sig_ptr = NULL;
+ if(_gif_read_data(gif_ptr, &sig_ptr, 1) == NULL) {
+ return 2;
+ }
+ switch(*sig_ptr) {
+ case GIF_SIG_EXTENSION:
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT);
+ continue;
+ case GIF_SIG_IMAGE:
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_INFO);
+ continue;
+ case GIF_SIG_TRAILER:
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
+ return 1;
+ default:
+ if (gif_ptr->avail_in) {
+ _gif_warn(gif_ptr, "The Gif File has non_standard Tag!");
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_SIG);
+ continue;
+ }
+ _gif_warn(gif_ptr, "The Gif File Doesn't have Trailer Tag!");
+ return 1;
+ }
+ }
+ case GIF_D_STATUS_EXT: {
+ FX_LPBYTE ext_ptr = NULL;
+ if(_gif_read_data(gif_ptr, &ext_ptr, 1) == NULL) {
+ return 2;
+ }
+ switch(*ext_ptr) {
+#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
+ case GIF_BLOCK_AE:
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_AE);
+ continue;
+#endif
+#ifdef GIF_SUPPORT_COMMENT_EXTENSION
+ case GIF_BLOCK_CE:
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_CE);
+ continue;
+#endif
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ case GIF_BLOCK_GCE:
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_GCE);
+ continue;
+#endif
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ case GIF_BLOCK_PTE:
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_PTE);
+ continue;
+#endif
+ default: {
+ FX_INT32 status = GIF_D_STATUS_EXT_UNE;
+#ifndef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ if(*ext_ptr == GIF_BLOCK_PTE) {
+ status = GIF_D_STATUS_EXT_PTE;
+ }
+#endif
+ _gif_save_decoding_status(gif_ptr, status);
+ continue;
+ }
+ }
+ }
+ case GIF_D_STATUS_IMG_INFO: {
+ ret = _gif_decode_image_info(gif_ptr);
+ if(ret != 1) {
+ return ret;
+ }
+ continue;
+ }
+ case GIF_D_STATUS_IMG_DATA: {
+ FX_LPBYTE data_size_ptr = NULL;
+ FX_LPBYTE data_ptr = NULL;
+ FX_DWORD skip_size_org = gif_ptr->skip_size;
+ if(_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ return 2;
+ }
+ while(*data_size_ptr != GIF_BLOCK_TERMINAL) {
+ if(_gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
+ skip_size_org = gif_ptr->skip_size;
+ if(_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ return 2;
+ }
+ }
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_SIG);
+ continue;
+ }
+ default: {
+ ret = _gif_decode_extension(gif_ptr);
+ if(ret != 1) {
+ return ret;
+ }
+ continue;
+ }
+ }
+ }
+ return 1;
+}
+void _gif_takeover_gce_ptr(gif_decompress_struct_p gif_ptr, GifGCE** gce_ptr_ptr)
+{
+ *gce_ptr_ptr = NULL;
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ if(gif_ptr->gce_ptr != NULL && gce_ptr_ptr != NULL) {
+ *gce_ptr_ptr = gif_ptr->gce_ptr;
+ gif_ptr->gce_ptr = NULL;
+ }
+#endif
+}
+FX_INT32 _gif_decode_extension(gif_decompress_struct_p gif_ptr)
+{
+ FX_LPBYTE data_size_ptr = NULL;
+ FX_LPBYTE data_ptr = NULL;
+ FX_DWORD skip_size_org = gif_ptr->skip_size;
+ switch(gif_ptr->decode_status) {
+#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
+ case GIF_D_STATUS_EXT_AE: {
+ ASSERT(sizeof(GifAE) == 12);
+ GifAE* gif_ae_ptr = NULL;
+ if(_gif_read_data(gif_ptr, (FX_LPBYTE*)&gif_ae_ptr, 12) == NULL) {
+ return 2;
+ }
+ CFX_ByteString gif_ae_data_str;
+ if(_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ while(*data_size_ptr != GIF_BLOCK_TERMINAL) {
+ FX_BYTE data_size = *data_size_ptr;
+ if(_gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL ||
+ _gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ gif_ae_data_str += CFX_ByteString((FX_LPCBYTE)data_ptr, data_size);
+ }
+ FXSYS_memcpy32(gif_ptr->app_identify, gif_ae_ptr->app_identify, 8);
+ FXSYS_memcpy32(gif_ptr->app_authentication, gif_ae_ptr->app_authentication, 3);
+ gif_ptr->app_data_size = gif_ae_data_str.GetLength();
+ if(gif_ptr->app_data != NULL) {
+ FX_Free(gif_ptr->app_data);
+ gif_ptr->app_data = NULL;
+ }
+ gif_ptr->app_data = FX_Alloc(FX_BYTE, gif_ptr->app_data_size);
+ GIF_PTR_NOT_NULL(gif_ptr->app_data, gif_ptr);
+ FXSYS_memcpy32(gif_ptr->app_data, FX_LPCBYTE(gif_ae_data_str), gif_ptr->app_data_size);
+ }
+ break;
+#endif
+#ifdef GIF_SUPPORT_COMMENT_EXTENSION
+ case GIF_D_STATUS_EXT_CE: {
+ if(_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ gif_ptr->cmt_data_ptr->Empty();
+ while(*data_size_ptr != GIF_BLOCK_TERMINAL) {
+ FX_BYTE data_size = *data_size_ptr;
+ if(_gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL ||
+ _gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ *(gif_ptr->cmt_data_ptr) += CFX_ByteString((FX_LPCSTR)data_ptr, data_size);
+ }
+ }
+ break;
+#endif
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ case GIF_D_STATUS_EXT_PTE: {
+ ASSERT(sizeof(GifPTE) == 13);
+ GifPTE* gif_pte_ptr = NULL;
+ if(_gif_read_data(gif_ptr, (FX_LPBYTE*)&gif_pte_ptr, 13) == NULL) {
+ return 2;
+ }
+ GifPlainText* gif_pt_ptr = FX_Alloc(GifPlainText, 1);
+ GIF_PTR_NOT_NULL(gif_pt_ptr, gif_ptr);
+ FXSYS_memset32(gif_pt_ptr, 0, sizeof(GifPlainText));
+ _gif_takeover_gce_ptr(gif_ptr, &gif_pt_ptr->gce_ptr);
+ gif_pt_ptr->pte_ptr = (GifPTE*)FX_Alloc(FX_BYTE, sizeof(GifPTE));
+ GIF_PTR_NOT_NULL(gif_pt_ptr->pte_ptr, gif_ptr);
+ gif_pt_ptr->string_ptr = FX_NEW CFX_ByteString;
+ GIF_PTR_NOT_NULL(gif_pt_ptr->string_ptr, gif_ptr);
+ gif_pt_ptr->pte_ptr->block_size = gif_pte_ptr->block_size;
+ gif_pt_ptr->pte_ptr->grid_left = _GetWord_LSBFirst((FX_LPBYTE)&gif_pte_ptr->grid_left);
+ gif_pt_ptr->pte_ptr->grid_top = _GetWord_LSBFirst((FX_LPBYTE)&gif_pte_ptr->grid_top);
+ gif_pt_ptr->pte_ptr->grid_width = _GetWord_LSBFirst((FX_LPBYTE)&gif_pte_ptr->grid_width);
+ gif_pt_ptr->pte_ptr->grid_height = _GetWord_LSBFirst((FX_LPBYTE)&gif_pte_ptr->grid_height);
+ gif_pt_ptr->pte_ptr->char_width = gif_pte_ptr->char_width;
+ gif_pt_ptr->pte_ptr->char_height = gif_pte_ptr->char_height;
+ gif_pt_ptr->pte_ptr->fc_index = gif_pte_ptr->fc_index;
+ gif_pt_ptr->pte_ptr->bc_index = gif_pte_ptr->bc_index;
+ if(_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ if(gif_pt_ptr != NULL) {
+ if(gif_pt_ptr->gce_ptr != NULL) {
+ FX_Free(gif_pt_ptr->gce_ptr);
+ }
+ if(gif_pt_ptr->pte_ptr != NULL) {
+ FX_Free(gif_pt_ptr->pte_ptr);
+ }
+ if(gif_pt_ptr->string_ptr != NULL) {
+ delete gif_pt_ptr->string_ptr;
+ }
+ FX_Free(gif_pt_ptr);
+ }
+ return 2;
+ }
+ while(*data_size_ptr != GIF_BLOCK_TERMINAL) {
+ FX_BYTE data_size = *data_size_ptr;
+ if(_gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL ||
+ _gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ if(gif_pt_ptr != NULL) {
+ if(gif_pt_ptr->gce_ptr != NULL) {
+ FX_Free(gif_pt_ptr->gce_ptr);
+ }
+ if(gif_pt_ptr->pte_ptr != NULL) {
+ FX_Free(gif_pt_ptr->pte_ptr);
+ }
+ if(gif_pt_ptr->string_ptr != NULL) {
+ delete gif_pt_ptr->string_ptr;
+ }
+ FX_Free(gif_pt_ptr);
+ }
+ return 2;
+ }
+ *(gif_pt_ptr->string_ptr) += CFX_ByteString((FX_LPCSTR)data_ptr, data_size);
+ }
+ gif_ptr->pt_ptr_arr_ptr->Add(gif_pt_ptr);
+ }
+ break;
+#endif
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ case GIF_D_STATUS_EXT_GCE: {
+ ASSERT(sizeof(GifGCE) == 5);
+ GifGCE* gif_gce_ptr = NULL;
+ if(_gif_read_data(gif_ptr, (FX_LPBYTE*)&gif_gce_ptr, 6) == NULL) {
+ return 2;
+ }
+ if(gif_ptr->gce_ptr == NULL) {
+ gif_ptr->gce_ptr = (GifGCE*)FX_Alloc(FX_BYTE, sizeof(GifGCE));
+ GIF_PTR_NOT_NULL(gif_ptr->gce_ptr, gif_ptr);
+ }
+ gif_ptr->gce_ptr->block_size = gif_gce_ptr->block_size;
+ gif_ptr->gce_ptr->gce_flag = gif_gce_ptr->gce_flag;
+ gif_ptr->gce_ptr->delay_time = _GetWord_LSBFirst((FX_LPBYTE)&gif_gce_ptr->delay_time);
+ gif_ptr->gce_ptr->trans_index = gif_gce_ptr->trans_index;
+ }
+ break;
+#endif
+ default: {
+#ifndef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ if(gif_ptr->decode_status == GIF_D_STATUS_EXT_PTE) {
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ if(gif_ptr->gce_ptr != NULL) {
+ FX_Free(gif_ptr->gce_ptr);
+ gif_ptr->gce_ptr = NULL;
+ }
+#endif
+ }
+#endif
+ if(_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ return 2;
+ }
+ while(*data_size_ptr != GIF_BLOCK_TERMINAL) {
+ if(_gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL ||
+ _gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL ) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ }
+ }
+ }
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_SIG);
+ return 1;
+}
+FX_INT32 _gif_decode_image_info(gif_decompress_struct_p gif_ptr)
+{
+ if(gif_ptr->width == 0 || gif_ptr->height == 0) {
+ _gif_error(gif_ptr, "No Image Header Info");
+ return 0;
+ }
+ FX_DWORD skip_size_org = gif_ptr->skip_size;
+ ASSERT(sizeof(GifImageInfo) == 9);
+ GifImageInfo* gif_img_info_ptr = NULL;
+ if(_gif_read_data(gif_ptr, (FX_LPBYTE*)&gif_img_info_ptr, 9) == NULL) {
+ return 2;
+ }
+ GifImage* gif_image_ptr = (GifImage*)FX_Alloc(FX_BYTE, sizeof(GifImage));
+ GIF_PTR_NOT_NULL(gif_image_ptr, gif_ptr);
+ FXSYS_memset32(gif_image_ptr, 0, sizeof(GifImage));
+ gif_image_ptr->image_info_ptr = (GifImageInfo*)FX_Alloc(FX_BYTE, sizeof(GifImageInfo));
+ GIF_PTR_NOT_NULL(gif_image_ptr->image_info_ptr, gif_ptr);
+ gif_image_ptr->image_info_ptr->left = _GetWord_LSBFirst((FX_LPBYTE)&gif_img_info_ptr->left);
+ gif_image_ptr->image_info_ptr->top = _GetWord_LSBFirst((FX_LPBYTE)&gif_img_info_ptr->top);
+ gif_image_ptr->image_info_ptr->width = _GetWord_LSBFirst((FX_LPBYTE)&gif_img_info_ptr->width);
+ gif_image_ptr->image_info_ptr->height = _GetWord_LSBFirst((FX_LPBYTE)&gif_img_info_ptr->height);
+ gif_image_ptr->image_info_ptr->local_flag = gif_img_info_ptr->local_flag;
+ if(gif_image_ptr->image_info_ptr->left + gif_image_ptr->image_info_ptr->width > gif_ptr->width ||
+ gif_image_ptr->image_info_ptr->top + gif_image_ptr->image_info_ptr->height > gif_ptr->height) {
+ if(gif_image_ptr->image_info_ptr != NULL) {
+ FX_Free(gif_image_ptr->image_info_ptr);
+ }
+ if(gif_image_ptr->image_row_buf != NULL) {
+ FX_Free(gif_image_ptr->image_row_buf);
+ }
+ FX_Free(gif_image_ptr);
+ _gif_error(gif_ptr, "Image Data Out Of LSD, The File May Be Corrupt");
+ return 0;
+ }
+ GifLF* gif_img_info_lf_ptr = (GifLF*)&gif_img_info_ptr->local_flag;
+ if(gif_img_info_lf_ptr->local_pal) {
+ ASSERT(sizeof(GifPalette) == 3);
+ FX_INT32 loc_pal_size = (2 << gif_img_info_lf_ptr->pal_bits) * 3;
+ FX_LPBYTE loc_pal_ptr = NULL;
+ if(_gif_read_data(gif_ptr, &loc_pal_ptr, loc_pal_size) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ if(gif_image_ptr->image_info_ptr != NULL) {
+ FX_Free(gif_image_ptr->image_info_ptr);
+ }
+ if(gif_image_ptr->image_row_buf != NULL) {
+ FX_Free(gif_image_ptr->image_row_buf);
+ }
+ FX_Free(gif_image_ptr);
+ return 2;
+ }
+ gif_image_ptr->local_pal_ptr = (GifPalette*)gif_ptr->_gif_ask_buf_for_pal_fn(gif_ptr, loc_pal_size);
+ if(gif_image_ptr->local_pal_ptr != NULL) {
+ FXSYS_memcpy32((FX_LPBYTE)gif_image_ptr->local_pal_ptr, loc_pal_ptr, loc_pal_size);
+ }
+ }
+ FX_LPBYTE code_size_ptr = NULL;
+ if(_gif_read_data(gif_ptr, &code_size_ptr, 1) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ if(gif_image_ptr->image_info_ptr != NULL) {
+ FX_Free(gif_image_ptr->image_info_ptr);
+ }
+ if(gif_image_ptr->local_pal_ptr != NULL) {
+ FX_Free(gif_image_ptr->local_pal_ptr);
+ }
+ if(gif_image_ptr->image_row_buf != NULL) {
+ FX_Free(gif_image_ptr->image_row_buf);
+ }
+ FX_Free(gif_image_ptr);
+ return 2;
+ }
+ gif_image_ptr->image_code_size = *code_size_ptr;
+ gif_ptr->_gif_record_current_position_fn(gif_ptr, &gif_image_ptr->image_data_pos);
+ gif_image_ptr->image_data_pos += gif_ptr->skip_size;
+ _gif_takeover_gce_ptr(gif_ptr, &gif_image_ptr->image_gce_ptr);
+ gif_ptr->img_ptr_arr_ptr->Add(gif_image_ptr);
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
+ return 1;
+}
+FX_INT32 _gif_load_frame(gif_decompress_struct_p gif_ptr, FX_INT32 frame_num)
+{
+ if(gif_ptr == NULL ||
+ frame_num < 0 ||
+ frame_num >= gif_ptr->img_ptr_arr_ptr->GetSize()
+ ) {
+ return 0;
+ }
+ FX_LPBYTE data_size_ptr = NULL;
+ FX_LPBYTE data_ptr = NULL;
+ FX_DWORD skip_size_org = gif_ptr->skip_size;
+ GifImage* gif_image_ptr = gif_ptr->img_ptr_arr_ptr->GetAt(frame_num);
+ FX_DWORD gif_img_row_bytes = gif_image_ptr->image_info_ptr->width;
+ if(gif_ptr->decode_status == GIF_D_STATUS_TAIL) {
+ if(gif_image_ptr->image_row_buf) {
+ FX_Free(gif_image_ptr->image_row_buf);
+ gif_image_ptr->image_row_buf = NULL;
+ }
+ gif_image_ptr->image_row_buf = FX_Alloc(FX_BYTE, gif_img_row_bytes);
+ GIF_PTR_NOT_NULL(gif_image_ptr->image_row_buf, gif_ptr);
+ GifGCE* gif_img_gce_ptr = gif_image_ptr->image_gce_ptr;
+ FX_INT32 loc_pal_num = ((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)->local_pal ?
+ (2 << ((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)->pal_bits) : 0;
+ gif_ptr->avail_in = 0;
+ if(gif_img_gce_ptr == NULL) {
+ FX_BOOL bRes = gif_ptr->_gif_get_record_position_fn(gif_ptr, gif_image_ptr->image_data_pos,
+ gif_image_ptr->image_info_ptr->left,
+ gif_image_ptr->image_info_ptr->top,
+ gif_image_ptr->image_info_ptr->width,
+ gif_image_ptr->image_info_ptr->height,
+ loc_pal_num, gif_image_ptr->local_pal_ptr,
+ 0, 0, -1, 0,
+ (FX_BOOL)((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)->interlace
+ );
+ if(!bRes) {
+ FX_Free(gif_image_ptr->image_row_buf);
+ gif_image_ptr->image_row_buf = NULL;
+ _gif_error(gif_ptr, "Error Read Record Position Data");
+ return 0;
+ }
+ } else {
+ FX_BOOL bRes = gif_ptr->_gif_get_record_position_fn(gif_ptr, gif_image_ptr->image_data_pos,
+ gif_image_ptr->image_info_ptr->left,
+ gif_image_ptr->image_info_ptr->top,
+ gif_image_ptr->image_info_ptr->width,
+ gif_image_ptr->image_info_ptr->height,
+ loc_pal_num, gif_image_ptr->local_pal_ptr,
+ (FX_INT32)gif_image_ptr->image_gce_ptr->delay_time,
+ (FX_BOOL)((GifCEF*)&gif_image_ptr->image_gce_ptr->gce_flag)->user_input,
+ ((GifCEF*)&gif_image_ptr->image_gce_ptr->gce_flag)->transparency ?
+ (FX_INT32)gif_image_ptr->image_gce_ptr->trans_index : -1,
+ (FX_INT32)((GifCEF*)&gif_image_ptr->image_gce_ptr->gce_flag)->disposal_method,
+ (FX_BOOL)((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)->interlace
+ );
+ if(!bRes) {
+ FX_Free(gif_image_ptr->image_row_buf);
+ gif_image_ptr->image_row_buf = NULL;
+ _gif_error(gif_ptr, "Error Read Record Position Data");
+ return 0;
+ }
+ }
+ if(gif_ptr->img_decoder_ptr == NULL) {
+ gif_ptr->img_decoder_ptr = FX_NEW CGifLZWDecoder(gif_ptr->err_ptr);
+ GIF_PTR_NOT_NULL(gif_ptr->img_decoder_ptr, gif_ptr);
+ }
+ gif_ptr->img_decoder_ptr->InitTable(gif_image_ptr->image_code_size);
+ gif_ptr->img_row_offset = 0;
+ gif_ptr->img_row_avail_size = 0;
+ gif_ptr->img_pass_num = 0;
+ gif_image_ptr->image_row_num = 0;
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
+ }
+ CGifLZWDecoder* img_decoder_ptr = gif_ptr->img_decoder_ptr;
+ if(gif_ptr->decode_status == GIF_D_STATUS_IMG_DATA) {
+ if(_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ return 2;
+ }
+ if(*data_size_ptr != GIF_BLOCK_TERMINAL) {
+ if(_gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ img_decoder_ptr->Input(data_ptr, *data_size_ptr);
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
+ gif_ptr->img_row_offset += gif_ptr->img_row_avail_size;
+ gif_ptr->img_row_avail_size = gif_img_row_bytes - gif_ptr->img_row_offset;
+ FX_INT32 ret = img_decoder_ptr->Decode(gif_image_ptr->image_row_buf + gif_ptr->img_row_offset, gif_ptr->img_row_avail_size);
+ if(ret == 0) {
+ FX_Free(gif_image_ptr->image_row_buf);
+ gif_image_ptr->image_row_buf = NULL;
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
+ _gif_error(gif_ptr, "Decode Image Data Error");
+ return 0;
+ }
+ while (ret != 0) {
+ if(ret == 1) {
+ gif_ptr->_gif_get_row_fn(gif_ptr, gif_image_ptr->image_row_num, gif_image_ptr->image_row_buf);
+ FX_Free(gif_image_ptr->image_row_buf);
+ gif_image_ptr->image_row_buf = NULL;
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
+ return 1;
+ }
+ if(ret == 2) {
+ ASSERT(img_decoder_ptr->GetAvailInput() == 0);
+ skip_size_org = gif_ptr->skip_size;
+ if(_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
+ return 2;
+ }
+ if (*data_size_ptr != GIF_BLOCK_TERMINAL) {
+ if(_gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL) {
+ gif_ptr->skip_size = skip_size_org;
+ return 2;
+ }
+ img_decoder_ptr->Input(data_ptr, *data_size_ptr);
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
+ gif_ptr->img_row_offset += gif_ptr->img_row_avail_size;
+ gif_ptr->img_row_avail_size = gif_img_row_bytes - gif_ptr->img_row_offset;
+ ret = img_decoder_ptr->Decode(gif_image_ptr->image_row_buf + gif_ptr->img_row_offset, gif_ptr->img_row_avail_size);
+ }
+ }
+ if(ret == 3) {
+ if(((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)->interlace) {
+ gif_ptr->_gif_get_row_fn(gif_ptr, gif_image_ptr->image_row_num, gif_image_ptr->image_row_buf);
+ gif_image_ptr->image_row_num += s_gif_interlace_step[gif_ptr->img_pass_num];
+ if(gif_image_ptr->image_row_num >= (FX_INT32)gif_image_ptr->image_info_ptr->height) {
+ gif_ptr->img_pass_num++;
+ gif_image_ptr->image_row_num = s_gif_interlace_step[gif_ptr->img_pass_num] / 2;
+ }
+ } else {
+ gif_ptr->_gif_get_row_fn(gif_ptr, gif_image_ptr->image_row_num++, gif_image_ptr->image_row_buf);
+ }
+ gif_ptr->img_row_offset = 0;
+ gif_ptr->img_row_avail_size = gif_img_row_bytes;
+ ret = img_decoder_ptr->Decode(gif_image_ptr->image_row_buf + gif_ptr->img_row_offset, gif_ptr->img_row_avail_size);
+ }
+ if(ret == 0) {
+ FX_Free(gif_image_ptr->image_row_buf);
+ gif_image_ptr->image_row_buf = NULL;
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
+ _gif_error(gif_ptr, "Decode Image Data Error");
+ return 0;
+ }
+ }
+ }
+ _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
+ }
+ _gif_error(gif_ptr, "Decode Image Data Error");
+ return 0;
+}
+void _gif_save_decoding_status(gif_decompress_struct_p gif_ptr, FX_INT32 status)
+{
+ gif_ptr->decode_status = status;
+ gif_ptr->next_in += gif_ptr->skip_size;
+ gif_ptr->avail_in -= gif_ptr->skip_size;
+ gif_ptr->skip_size = 0;
+}
+FX_LPBYTE _gif_read_data(gif_decompress_struct_p gif_ptr, FX_LPBYTE* des_buf_pp, FX_DWORD data_size)
+{
+ if(gif_ptr == NULL ||
+ gif_ptr->avail_in < gif_ptr->skip_size + data_size) {
+ return NULL;
+ }
+ *des_buf_pp = gif_ptr->next_in + gif_ptr->skip_size;
+ gif_ptr->skip_size += data_size;
+ return *des_buf_pp;
+}
+void _gif_input_buffer(gif_decompress_struct_p gif_ptr, FX_LPBYTE src_buf, FX_DWORD src_size)
+{
+ gif_ptr->next_in = src_buf;
+ gif_ptr->avail_in = src_size;
+ gif_ptr->skip_size = 0;
+}
+FX_DWORD _gif_get_avail_input(gif_decompress_struct_p gif_ptr, FX_LPBYTE* avial_buf_ptr)
+{
+ if(avial_buf_ptr != NULL) {
+ *avial_buf_ptr = NULL;
+ if(gif_ptr->avail_in > 0) {
+ *avial_buf_ptr = gif_ptr->next_in;
+ }
+ }
+ return gif_ptr->avail_in;
+}
+FX_INT32 _gif_get_frame_num(gif_decompress_struct_p gif_ptr)
+{
+ return gif_ptr->img_ptr_arr_ptr->GetSize();
+}
+static FX_BOOL _gif_write_header( gif_compress_struct_p gif_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_len )
+{
+ if (gif_ptr->cur_offset) {
+ return TRUE;
+ }
+ dst_len = sizeof(GifHeader) + sizeof(GifLSD) + sizeof(GifGF);
+ dst_buf = FX_AllocNL(FX_BYTE, dst_len);
+ if (dst_buf == NULL) {
+ return FALSE;
+ }
+ FXSYS_memset32(dst_buf, 0, dst_len);
+ FXSYS_memcpy32(dst_buf, gif_ptr->header_ptr, sizeof(GifHeader));
+ gif_ptr->cur_offset += sizeof(GifHeader);
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->lsd_ptr->width);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->lsd_ptr->height);
+ gif_ptr->cur_offset += 2;
+ dst_buf[gif_ptr->cur_offset++] = gif_ptr->lsd_ptr->global_flag;
+ dst_buf[gif_ptr->cur_offset++] = gif_ptr->lsd_ptr->bc_index;
+ dst_buf[gif_ptr->cur_offset++] = gif_ptr->lsd_ptr->pixel_aspect;
+ if (gif_ptr->global_pal) {
+ FX_WORD size = sizeof(GifPalette) * gif_ptr->gpal_num;
+ if (!_gif_grow_buf(dst_buf, dst_len, gif_ptr->cur_offset + size)) {
+ return FALSE;
+ }
+ FXSYS_memcpy32(&dst_buf[gif_ptr->cur_offset], gif_ptr->global_pal, size);
+ gif_ptr->cur_offset += size;
+ }
+ return TRUE;
+}
+void interlace_buf(FX_LPCBYTE buf, FX_DWORD pitch, FX_DWORD height)
+{
+ CFX_ArrayTemplate<FX_LPBYTE> pass[4];
+ int i, j;
+ FX_DWORD row;
+ row = 0;
+ FX_LPBYTE temp;
+ while (row < height) {
+ if (row % 8 == 0) {
+ j = 0;
+ } else if (row % 4 == 0) {
+ j = 1;
+ } else if (row % 2 == 0) {
+ j = 2;
+ } else {
+ j = 3;
+ }
+ temp = FX_Alloc(FX_BYTE, pitch);
+ if (temp == NULL) {
+ return;
+ }
+ FXSYS_memcpy32(temp, &buf[pitch * row], pitch);
+ pass[j].Add(temp);
+ row ++;
+ }
+ for (i = 0, row = 0; i < 4; i++) {
+ for (j = 0; j < pass[i].GetSize(); j++, row++) {
+ FXSYS_memcpy32((FX_LPBYTE)&buf[pitch * row], pass[i].GetAt(j), pitch);
+ FX_Free(pass[i].GetAt(j));
+ }
+ }
+}
+static void _gif_write_block_data(FX_LPCBYTE src_buf, FX_DWORD src_len, FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& dst_offset)
+{
+ FX_DWORD src_offset = 0;
+ while (src_len > GIF_DATA_BLOCK) {
+ dst_buf[dst_offset++] = GIF_DATA_BLOCK;
+ FXSYS_memcpy32(&dst_buf[dst_offset], &src_buf[src_offset], GIF_DATA_BLOCK);
+ dst_offset += GIF_DATA_BLOCK;
+ src_offset += GIF_DATA_BLOCK;
+ src_len -= GIF_DATA_BLOCK;
+ }
+ dst_buf[dst_offset++] = (FX_BYTE)src_len;
+ FXSYS_memcpy32(&dst_buf[dst_offset], &src_buf[src_offset], src_len);
+ dst_offset += src_len;
+}
+static FX_BOOL _gif_write_data( gif_compress_struct_p gif_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_len )
+{
+ if (!_gif_grow_buf(dst_buf, dst_len, gif_ptr->cur_offset + GIF_DATA_BLOCK)) {
+ return FALSE;
+ }
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ if (FXSYS_memcmp32(gif_ptr->header_ptr->version, "89a", 3) == 0) {
+ dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
+ dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_GCE;
+ gif_ptr->gce_ptr->block_size = 4;
+ dst_buf[gif_ptr->cur_offset++] = gif_ptr->gce_ptr->block_size;
+ gif_ptr->gce_ptr->gce_flag = 0;
+ dst_buf[gif_ptr->cur_offset++] = gif_ptr->gce_ptr->gce_flag;
+ gif_ptr->gce_ptr->delay_time = 10;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->gce_ptr->delay_time);
+ gif_ptr->cur_offset += 2;
+ gif_ptr->gce_ptr->trans_index = 0;
+ dst_buf[gif_ptr->cur_offset++] = gif_ptr->gce_ptr->trans_index;
+ dst_buf[gif_ptr->cur_offset++] = 0;
+ }
+#endif
+ dst_buf[gif_ptr->cur_offset++] = GIF_SIG_IMAGE;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->image_info_ptr->left);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->image_info_ptr->top);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->image_info_ptr->width);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->image_info_ptr->height);
+ gif_ptr->cur_offset += 2;
+ GifLF& lf = (GifLF&)gif_ptr->image_info_ptr->local_flag;
+ dst_buf[gif_ptr->cur_offset++] = gif_ptr->image_info_ptr->local_flag;
+ if (gif_ptr->local_pal) {
+ FX_DWORD pal_size = sizeof(GifPalette) * gif_ptr->lpal_num;
+ if (!_gif_grow_buf(dst_buf, dst_len, pal_size + gif_ptr->cur_offset)) {
+ return FALSE;
+ }
+ FXSYS_memcpy32(&dst_buf[gif_ptr->cur_offset], gif_ptr->local_pal, pal_size);
+ gif_ptr->cur_offset += pal_size;
+ }
+ if (lf.interlace) {
+ interlace_buf(gif_ptr->src_buf, gif_ptr->src_pitch, gif_ptr->image_info_ptr->height);
+ }
+ FX_BYTE code_bit = lf.pal_bits;
+ if (lf.local_pal == 0) {
+ GifGF& gf = (GifGF&)gif_ptr->lsd_ptr->global_flag;
+ code_bit = gf.pal_bits;
+ }
+ gif_ptr->img_encoder_ptr->Start(code_bit, gif_ptr->src_buf, dst_buf, gif_ptr->cur_offset);
+ FX_DWORD i;
+ for (i = 0; i < gif_ptr->src_row; i++) {
+ if (!gif_ptr->img_encoder_ptr->Encode(&gif_ptr->src_buf[i * gif_ptr->src_pitch], gif_ptr->src_width * (code_bit + 1),
+ dst_buf, dst_len, gif_ptr->cur_offset)) {
+ return FALSE;
+ }
+ }
+ gif_ptr->img_encoder_ptr->Finish(dst_buf, dst_len, gif_ptr->cur_offset);
+ dst_buf[gif_ptr->cur_offset++] = 0;
+#ifdef GIF_SUPPORT_COMMENT_EXTENSION
+ if (FXSYS_memcmp32(gif_ptr->header_ptr->version, "89a", 3) == 0 && gif_ptr->cmt_data_ptr) {
+ dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
+ dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_CE;
+ _gif_write_block_data(gif_ptr->cmt_data_ptr, gif_ptr->cmt_data_len, dst_buf, dst_len, gif_ptr->cur_offset);
+ dst_buf[gif_ptr->cur_offset++] = 0;
+ }
+#endif
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ if (FXSYS_memcmp32(gif_ptr->header_ptr->version, "89a", 3) == 0 && gif_ptr->pte_data_ptr) {
+ dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
+ dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_PTE;
+ dst_buf[gif_ptr->cur_offset++] = gif_ptr->pte_ptr->block_size;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->grid_left);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->grid_top);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->grid_width);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->grid_height);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->char_width);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->char_height);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->fc_index);
+ gif_ptr->cur_offset += 2;
+ _SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->bc_index);
+ gif_ptr->cur_offset += 2;
+ _gif_write_block_data(gif_ptr->pte_data_ptr, gif_ptr->pte_data_len, dst_buf, dst_len, gif_ptr->cur_offset);
+ gif_ptr->cur_offset += gif_ptr->pte_data_len;
+ dst_buf[gif_ptr->cur_offset++] = 0;
+ }
+#endif
+#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
+ if (FXSYS_memcmp32(gif_ptr->header_ptr->version, "89a", 3) == 0 && gif_ptr->app_data) {
+ dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
+ dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_AE;
+ dst_buf[gif_ptr->cur_offset++] = 11;
+ FXSYS_memcpy32(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_identify, 8);
+ gif_ptr->cur_offset += 8;
+ FXSYS_memcpy32(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_authentication, 8);
+ gif_ptr->cur_offset += 3;
+ FXSYS_memcpy32(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_data, gif_ptr->app_data_size);
+ gif_ptr->cur_offset += gif_ptr->app_data_size;
+ dst_buf[gif_ptr->cur_offset++] = 0;
+ }
+#endif
+ dst_buf[gif_ptr->cur_offset++] = GIF_SIG_TRAILER;
+ return TRUE;
+}
+FX_BOOL _gif_encode( gif_compress_struct_p gif_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_len )
+{
+ if (!_gif_write_header(gif_ptr, dst_buf, dst_len)) {
+ return FALSE;
+ }
+ FX_DWORD cur_offset = gif_ptr->cur_offset;
+ FX_BOOL res = TRUE;
+ if (gif_ptr->frames) {
+ gif_ptr->cur_offset--;
+ }
+ if (!_gif_write_data(gif_ptr, dst_buf, dst_len)) {
+ gif_ptr->cur_offset = cur_offset;
+ res = FALSE;
+ }
+ dst_len = gif_ptr->cur_offset;
+ dst_buf[dst_len - 1] = GIF_SIG_TRAILER;
+ if (res) {
+ gif_ptr->frames++;
+ }
+ return res;
+}
diff --git a/core/src/fxcodec/lgif/fx_gif.h b/core/src/fxcodec/lgif/fx_gif.h
new file mode 100644
index 0000000..b499a54
--- /dev/null
+++ b/core/src/fxcodec/lgif/fx_gif.h
@@ -0,0 +1,307 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef _FX_BASIC_H_
+#include "../../../include/fxcrt/fx_basic.h"
+#endif
+extern FX_WORD _GetWord_LSBFirst(FX_LPBYTE p);
+extern void _SetWord_LSBFirst(FX_LPBYTE p, FX_WORD v);
+extern void _BpcConvert(FX_LPCBYTE src_buf, FX_DWORD src_len, FX_INT32 src_bpc, FX_INT32 dst_bpc,
+ FX_LPBYTE& dst_buf, FX_DWORD& dst_len);
+#define GIF_SUPPORT_COMMENT_EXTENSION
+#define GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+#define GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+#define GIF_SIGNATURE "GIF"
+#define GIF_SIG_EXTENSION 0x21
+#define GIF_SIG_IMAGE 0x2C
+#define GIF_SIG_TRAILER 0x3B
+#define GIF_BLOCK_GCE 0xF9
+#define GIF_BLOCK_PTE 0x01
+#define GIF_BLOCK_CE 0xFE
+#define GIF_BLOCK_AE 0xFF
+#define GIF_BLOCK_TERMINAL 0x00
+#define GIF_MAX_LZW_CODE 4096
+#define GIF_DATA_BLOCK 255
+#define GIF_MAX_ERROR_SIZE 256
+#define GIF_D_STATUS_SIG 0x01
+#define GIF_D_STATUS_TAIL 0x02
+#define GIF_D_STATUS_EXT 0x03
+#define GIF_D_STATUS_EXT_AE 0x04
+#define GIF_D_STATUS_EXT_CE 0x05
+#define GIF_D_STATUS_EXT_GCE 0x06
+#define GIF_D_STATUS_EXT_PTE 0x07
+#define GIF_D_STATUS_EXT_UNE 0x08
+#define GIF_D_STATUS_IMG_INFO 0x09
+#define GIF_D_STATUS_IMG_DATA 0x0A
+#pragma pack(1)
+typedef struct tagGifGF {
+ FX_BYTE pal_bits : 3;
+ FX_BYTE sort_flag : 1;
+ FX_BYTE color_resolution : 3;
+ FX_BYTE global_pal : 1;
+} GifGF;
+typedef struct tagGifLF {
+ FX_BYTE pal_bits : 3;
+ FX_BYTE reserved : 2;
+ FX_BYTE sort_flag : 1;
+ FX_BYTE interlace : 1;
+ FX_BYTE local_pal : 1;
+} GifLF;
+typedef struct tagGifHeader {
+ char signature[3];
+ char version[3];
+} GifHeader;
+typedef struct tagGifLSD {
+ FX_WORD width;
+ FX_WORD height;
+ FX_BYTE global_flag;
+ FX_BYTE bc_index;
+ FX_BYTE pixel_aspect;
+} GifLSD;
+typedef struct tagGifImageInfo {
+ FX_WORD left;
+ FX_WORD top;
+ FX_WORD width;
+ FX_WORD height;
+
+ FX_BYTE local_flag;
+} GifImageInfo;
+typedef struct tagGifCEF {
+ FX_BYTE transparency : 1;
+ FX_BYTE user_input : 1;
+ FX_BYTE disposal_method : 3;
+ FX_BYTE reserved : 3;
+} GifCEF;
+typedef struct tagGifGCE {
+ FX_BYTE block_size;
+ FX_BYTE gce_flag;
+ FX_WORD delay_time;
+ FX_BYTE trans_index;
+} GifGCE;
+typedef struct tagGifPTE {
+ FX_BYTE block_size;
+ FX_WORD grid_left;
+ FX_WORD grid_top;
+ FX_WORD grid_width;
+ FX_WORD grid_height;
+
+ FX_BYTE char_width;
+ FX_BYTE char_height;
+
+ FX_BYTE fc_index;
+ FX_BYTE bc_index;
+} GifPTE;
+typedef struct tagGifAE {
+ FX_BYTE block_size;
+ FX_BYTE app_identify[8];
+ FX_BYTE app_authentication[3];
+} GifAE;
+typedef struct tagGifPalette {
+ FX_BYTE r, g, b;
+} GifPalette;
+#pragma pack()
+typedef struct tagGifImage {
+ GifGCE* image_gce_ptr;
+ GifPalette* local_pal_ptr;
+ GifImageInfo* image_info_ptr;
+ FX_BYTE image_code_size;
+ FX_DWORD image_data_pos;
+ FX_LPBYTE image_row_buf;
+ FX_INT32 image_row_num;
+} GifImage;
+typedef struct tagGifPlainText {
+ GifGCE* gce_ptr;
+ GifPTE* pte_ptr;
+ CFX_ByteString* string_ptr;
+} GifPlainText;
+class CGifLZWDecoder : public CFX_Object
+{
+public:
+ struct tag_Table {
+ FX_WORD prefix;
+ FX_BYTE suffix;
+ };
+ CGifLZWDecoder(FX_LPSTR error_ptr = NULL)
+ {
+ err_msg_ptr = error_ptr;
+ }
+ void InitTable(FX_BYTE code_len);
+
+ FX_INT32 Decode(FX_LPBYTE des_buf, FX_DWORD& des_size);
+
+ void Input(FX_LPBYTE src_buf, FX_DWORD src_size);
+ FX_DWORD GetAvailInput();
+
+private:
+ void ClearTable();
+ void AddCode(FX_WORD prefix_code, FX_BYTE append_char);
+ void DecodeString(FX_WORD code);
+ FX_BYTE code_size;
+ FX_BYTE code_size_cur;
+ FX_WORD code_clear;
+ FX_WORD code_end;
+ FX_WORD code_next;
+ FX_BYTE code_first;
+ FX_BYTE stack[GIF_MAX_LZW_CODE];
+ FX_WORD stack_size;
+ tag_Table code_table[GIF_MAX_LZW_CODE];
+ FX_WORD code_old;
+
+ FX_LPBYTE next_in;
+ FX_DWORD avail_in;
+
+ FX_BYTE bits_left;
+ FX_DWORD code_store;
+
+ FX_LPSTR err_msg_ptr;
+};
+class CGifLZWEncoder : public CFX_Object
+{
+public:
+ struct tag_Table {
+ FX_WORD prefix;
+ FX_BYTE suffix;
+ };
+ CGifLZWEncoder();
+ ~CGifLZWEncoder();
+ void Start(FX_BYTE code_len, FX_LPCBYTE src_buf, FX_LPBYTE& dst_buf, FX_DWORD& offset);
+ FX_BOOL Encode(FX_LPCBYTE src_buf, FX_DWORD src_len, FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset);
+ void Finish(FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset);
+private:
+ void ClearTable();
+ FX_BOOL LookUpInTable(FX_LPCBYTE buf, FX_DWORD& offset, FX_BYTE& bit_offset);
+ void EncodeString(FX_DWORD index, FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset);
+ void WriteBlock(FX_LPBYTE& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset);
+ jmp_buf jmp;
+ FX_DWORD src_offset;
+ FX_BYTE src_bit_offset;
+ FX_BYTE src_bit_cut;
+ FX_DWORD src_bit_num;
+ FX_BYTE code_size;
+ FX_WORD code_clear;
+ FX_WORD code_end;
+ FX_WORD index_num;
+ FX_BYTE bit_offset;
+ FX_BYTE index_bit_cur;
+ FX_BYTE index_buf[GIF_DATA_BLOCK];
+ FX_BYTE index_buf_len;
+ tag_Table code_table[GIF_MAX_LZW_CODE];
+ FX_WORD table_cur;
+};
+typedef struct tag_gif_decompress_struct gif_decompress_struct;
+typedef gif_decompress_struct *gif_decompress_struct_p;
+typedef gif_decompress_struct_p *gif_decompress_struct_pp;
+static FX_INT32 s_gif_interlace_step[4] = {8, 8, 4, 2};
+struct tag_gif_decompress_struct {
+ jmp_buf jmpbuf;
+ FX_LPSTR err_ptr;
+ void (*_gif_error_fn)(gif_decompress_struct_p gif_ptr, FX_LPCSTR err_msg);
+ void* context_ptr;
+ int width;
+ int height;
+ GifPalette* global_pal_ptr;
+ FX_INT32 global_pal_num;
+ FX_BYTE global_sort_flag;
+ FX_BYTE global_color_resolution;
+
+ FX_BYTE bc_index;
+ FX_BYTE pixel_aspect;
+ CGifLZWDecoder* img_decoder_ptr;
+ FX_DWORD img_row_offset;
+ FX_DWORD img_row_avail_size;
+ FX_BYTE img_pass_num;
+ CFX_ArrayTemplate<GifImage*>* img_ptr_arr_ptr;
+ FX_LPBYTE (*_gif_ask_buf_for_pal_fn)(gif_decompress_struct_p gif_ptr, FX_INT32 pal_size);
+ FX_LPBYTE next_in;
+ FX_DWORD avail_in;
+ FX_INT32 decode_status;
+ FX_DWORD skip_size;
+ void (*_gif_record_current_position_fn)(gif_decompress_struct_p gif_ptr, FX_DWORD* cur_pos_ptr);
+ void (*_gif_get_row_fn)(gif_decompress_struct_p gif_ptr, FX_INT32 row_num, FX_LPBYTE row_buf);
+ FX_BOOL (*_gif_get_record_position_fn)(gif_decompress_struct_p gif_ptr, FX_DWORD cur_pos,
+ FX_INT32 left, FX_INT32 top, FX_INT32 width, FX_INT32 height,
+ FX_INT32 pal_num, void* pal_ptr,
+ FX_INT32 delay_time, FX_BOOL user_input,
+ FX_INT32 trans_index, FX_INT32 disposal_method, FX_BOOL interlace);
+#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
+ FX_BYTE app_identify[8];
+ FX_BYTE app_authentication[3];
+ FX_DWORD app_data_size;
+ FX_LPBYTE app_data;
+#endif
+#ifdef GIF_SUPPORT_COMMENT_EXTENSION
+ CFX_ByteString* cmt_data_ptr;
+#endif
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ GifGCE* gce_ptr;
+#endif
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ CFX_ArrayTemplate<GifPlainText*>* pt_ptr_arr_ptr;
+#endif
+};
+typedef struct tag_gif_compress_struct gif_compress_struct;
+typedef gif_compress_struct *gif_compress_struct_p;
+typedef gif_compress_struct_p *gif_compress_struct_pp;
+struct tag_gif_compress_struct {
+ FX_LPCBYTE src_buf;
+ FX_DWORD src_pitch;
+ FX_DWORD src_width;
+ FX_DWORD src_row;
+ FX_DWORD cur_offset;
+ FX_DWORD frames;
+ GifHeader* header_ptr;
+ GifLSD* lsd_ptr;
+ GifPalette* global_pal;
+ FX_WORD gpal_num;
+ GifPalette* local_pal;
+ FX_WORD lpal_num;
+ GifImageInfo* image_info_ptr;
+ CGifLZWEncoder* img_encoder_ptr;
+#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
+ FX_BYTE app_identify[8];
+ FX_BYTE app_authentication[3];
+ FX_DWORD app_data_size;
+ FX_LPBYTE app_data;
+#endif
+
+#ifdef GIF_SUPPORT_COMMENT_EXTENSION
+ FX_LPBYTE cmt_data_ptr;
+ FX_DWORD cmt_data_len;
+#endif
+
+#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
+ GifGCE* gce_ptr;
+#endif
+
+#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
+ GifPTE* pte_ptr;
+ FX_LPCBYTE pte_data_ptr;
+ FX_DWORD pte_data_len;
+#endif
+};
+void _gif_error(gif_decompress_struct_p gif_ptr, FX_LPCSTR err_msg);
+void _gif_warn(gif_decompress_struct_p gif_ptr, FX_LPCSTR err_msg);
+gif_decompress_struct_p _gif_create_decompress();
+void _gif_destroy_decompress(gif_decompress_struct_pp gif_ptr_ptr);
+gif_compress_struct_p _gif_create_compress();
+void _gif_destroy_compress(gif_compress_struct_pp gif_ptr_ptr);
+FX_INT32 _gif_read_header(gif_decompress_struct_p gif_ptr);
+FX_INT32 _gif_get_frame(gif_decompress_struct_p gif_ptr);
+FX_INT32 _gif_get_frame_num(gif_decompress_struct_p gif_ptr);
+FX_INT32 _gif_decode_extension(gif_decompress_struct_p gif_ptr);
+FX_INT32 _gif_decode_image_info(gif_decompress_struct_p gif_ptr);
+void _gif_takeover_gce_ptr(gif_decompress_struct_p gif_ptr, GifGCE** gce_ptr_ptr);
+FX_INT32 _gif_load_frame(gif_decompress_struct_p gif_ptr, FX_INT32 frame_num);
+FX_LPBYTE _gif_read_data(gif_decompress_struct_p gif_ptr, FX_LPBYTE* des_buf_pp, FX_DWORD data_size);
+void _gif_save_decoding_status(gif_decompress_struct_p gif_ptr, FX_INT32 status);
+void _gif_input_buffer(gif_decompress_struct_p gif_ptr, FX_LPBYTE src_buf, FX_DWORD src_size);
+FX_DWORD _gif_get_avail_input(gif_decompress_struct_p gif_ptr, FX_LPBYTE* avial_buf_ptr);
+void interlace_buf(FX_LPCBYTE buf, FX_DWORD width, FX_DWORD height);
+FX_BOOL _gif_encode( gif_compress_struct_p gif_ptr, FX_LPBYTE& dst_buf, FX_DWORD& dst_len );
+#define GIF_PTR_NOT_NULL(ptr,gif_ptr) if(ptr == NULL){ \
+ _gif_error(gif_ptr,"Out Of Memory");\
+ return 0; \
+ }
diff --git a/core/src/fxcrt/extension.h b/core/src/fxcrt/extension.h
index c23a2e3..05aad67 100644
--- a/core/src/fxcrt/extension.h
+++ b/core/src/fxcrt/extension.h
@@ -26,6 +26,44 @@
virtual FX_BOOL Truncate(FX_FILESIZE szFile) = 0;
};
IFXCRT_FileAccess* FXCRT_FileAccess_Create();
+class CFX_CRTFileAccess : public IFX_FileAccess, public CFX_Object
+{
+public:
+ CFX_CRTFileAccess() : m_RefCount(0) {}
+
+ virtual void Release()
+ {
+ if (--m_RefCount == 0)
+ delete this;
+ }
+
+ IFX_FileAccess* Retain()
+ {
+ m_RefCount++;
+ return (IFX_FileAccess*)this;
+ }
+
+ virtual FX_BOOL Init(FX_WSTR wsPath)
+ {
+ m_path = wsPath;
+ m_RefCount = 1;
+ return TRUE;
+ }
+
+ virtual void GetPath(CFX_WideString& wsPath)
+ {
+ wsPath = m_path;
+ }
+
+ virtual IFX_FileStream* CreateFileStream(FX_DWORD dwModes)
+ {
+ return FX_CreateFileStream(m_path, dwModes);
+ }
+
+protected:
+ CFX_WideString m_path;
+ FX_DWORD m_RefCount;
+};
class CFX_CRTFileStream FX_FINAL : public IFX_FileStream, public CFX_Object
{
public:
diff --git a/core/src/fxcrt/fx_arabic.cpp b/core/src/fxcrt/fx_arabic.cpp
index 583ce81..dd5d1d8 100644
--- a/core/src/fxcrt/fx_arabic.cpp
+++ b/core/src/fxcrt/fx_arabic.cpp
@@ -7,6 +7,1084 @@
#include "../../include/fxcrt/fx_ext.h"
#include "fx_arabic.h"
extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536];
+#ifdef __cplusplus
+extern "C" {
+#endif
+static const FX_ARBFORMTABLE g_FX_ArabicFormTables[] = {
+ {0xFE81, 0xFE82, 0xFE81, 0xFE82},
+ {0xFE83, 0xFE84, 0xFE83, 0xFE84},
+ {0xFE85, 0xFE86, 0xFE85, 0xFE86},
+ {0xFE87, 0xFE88, 0xFE87, 0xFE88},
+ {0xFE89, 0xFE8A, 0xFE8B, 0xFE8C},
+ {0xFE8D, 0xFE8E, 0xFE8D, 0xFE8E},
+ {0xFE8F, 0xFE90, 0xFE91, 0xFE92},
+ {0xFE93, 0xFE94, 0xFE93, 0xFE94},
+ {0xFE95, 0xFE96, 0xFE97, 0xFE98},
+ {0xFE99, 0xFE9A, 0xFE9B, 0xFE9C},
+ {0xFE9D, 0xFE9E, 0xFE9F, 0xFEA0},
+ {0xFEA1, 0xFEA2, 0xFEA3, 0xFEA4},
+ {0xFEA5, 0xFEA6, 0xFEA7, 0xFEA8},
+ {0xFEA9, 0xFEAA, 0xFEA9, 0xFEAA},
+ {0xFEAB, 0xFEAC, 0xFEAB, 0xFEAC},
+ {0xFEAD, 0xFEAE, 0xFEAD, 0xFEAE},
+ {0xFEAF, 0xFEB0, 0xFEAF, 0xFEB0},
+ {0xFEB1, 0xFEB2, 0xFEB3, 0xFEB4},
+ {0xFEB5, 0xFEB6, 0xFEB7, 0xFEB8},
+ {0xFEB9, 0xFEBA, 0xFEBB, 0xFEBC},
+ {0xFEBD, 0xFEBE, 0xFEBF, 0xFEC0},
+ {0xFEC1, 0xFEC2, 0xFEC3, 0xFEC4},
+ {0xFEC5, 0xFEC6, 0xFEC7, 0xFEC8},
+ {0xFEC9, 0xFECA, 0xFECB, 0xFECC},
+ {0xFECD, 0xFECE, 0xFECF, 0xFED0},
+ {0x063B, 0x063B, 0x063B, 0x063B},
+ {0x063C, 0x063C, 0x063C, 0x063C},
+ {0x063D, 0x063D, 0x063D, 0x063D},
+ {0x063E, 0x063E, 0x063E, 0x063E},
+ {0x063F, 0x063F, 0x063F, 0x063F},
+ {0x0640, 0x0640, 0x0640, 0x0640},
+ {0xFED1, 0xFED2, 0xFED3, 0xFED4},
+ {0xFED5, 0xFED6, 0xFED7, 0xFED8},
+ {0xFED9, 0xFEDA, 0xFEDB, 0xFEDC},
+ {0xFEDD, 0xFEDE, 0xFEDF, 0xFEE0},
+ {0xFEE1, 0xFEE2, 0xFEE3, 0xFEE4},
+ {0xFEE5, 0xFEE6, 0xFEE7, 0xFEE8},
+ {0xFEE9, 0xFEEA, 0xFEEB, 0xFEEC},
+ {0xFEED, 0xFEEE, 0xFEED, 0xFEEE},
+ {0xFEEF, 0xFEF0, 0xFBFE, 0xFBFF},
+ {0xFEF1, 0xFEF2, 0xFEF3, 0xFEF4},
+ {0x064B, 0x064B, 0x064B, 0x064B},
+ {0x064C, 0x064C, 0x064C, 0x064C},
+ {0x064D, 0x064D, 0x064D, 0x064D},
+ {0x064E, 0x064E, 0x064E, 0x064E},
+ {0x064F, 0x064F, 0x064F, 0x064F},
+ {0x0650, 0x0650, 0x0650, 0x0650},
+ {0x0651, 0x0651, 0x0651, 0x0651},
+ {0x0652, 0x0652, 0x0652, 0x0652},
+ {0x0653, 0x0653, 0x0653, 0x0653},
+ {0x0654, 0x0654, 0x0654, 0x0654},
+ {0x0655, 0x0655, 0x0655, 0x0655},
+ {0x0656, 0x0656, 0x0656, 0x0656},
+ {0x0657, 0x0657, 0x0657, 0x0657},
+ {0x0658, 0x0658, 0x0658, 0x0658},
+ {0x0659, 0x0659, 0x0659, 0x0659},
+ {0x065A, 0x065A, 0x065A, 0x065A},
+ {0x065B, 0x065B, 0x065B, 0x065B},
+ {0x065C, 0x065C, 0x065C, 0x065C},
+ {0x065D, 0x065D, 0x065D, 0x065D},
+ {0x065E, 0x065E, 0x065E, 0x065E},
+ {0x065F, 0x065F, 0x065F, 0x065F},
+ {0x0660, 0x0660, 0x0660, 0x0660},
+ {0x0661, 0x0661, 0x0661, 0x0661},
+ {0x0662, 0x0662, 0x0662, 0x0662},
+ {0x0663, 0x0663, 0x0663, 0x0663},
+ {0x0664, 0x0664, 0x0664, 0x0664},
+ {0x0665, 0x0665, 0x0665, 0x0665},
+ {0x0666, 0x0666, 0x0666, 0x0666},
+ {0x0667, 0x0667, 0x0667, 0x0667},
+ {0x0668, 0x0668, 0x0668, 0x0668},
+ {0x0669, 0x0669, 0x0669, 0x0669},
+ {0x066A, 0x066A, 0x066A, 0x066A},
+ {0x066B, 0x066B, 0x066B, 0x066B},
+ {0x066C, 0x066C, 0x066C, 0x066C},
+ {0x066D, 0x066D, 0x066D, 0x066D},
+ {0x066E, 0x066E, 0x066E, 0x066E},
+ {0x066F, 0x066F, 0x066F, 0x066F},
+ {0x0670, 0x0670, 0x0670, 0x0670},
+ {0xFB50, 0xFB51, 0xFB50, 0xFB51},
+ {0x0672, 0x0672, 0x0672, 0x0672},
+ {0x0673, 0x0673, 0x0673, 0x0673},
+ {0x0674, 0x0674, 0x0674, 0x0674},
+ {0x0675, 0x0675, 0x0675, 0x0675},
+ {0x0676, 0x0676, 0x0676, 0x0676},
+ {0x0677, 0x0677, 0x0677, 0x0677},
+ {0x0678, 0x0678, 0x0678, 0x0678},
+ {0xFB66, 0xFB67, 0xFB68, 0xFB69},
+ {0xFB5E, 0xFB5F, 0xFB60, 0xFB61},
+ {0xFB52, 0xFB53, 0xFB54, 0xFB55},
+ {0x067C, 0x067C, 0x067C, 0x067C},
+ {0x067D, 0x067D, 0x067D, 0x067D},
+ {0xFB56, 0xFB57, 0xFB58, 0xFB59},
+ {0xFB62, 0xFB63, 0xFB64, 0xFB65},
+ {0xFB5A, 0xFB5B, 0xFB5C, 0xFB5D},
+ {0x0681, 0x0681, 0x0681, 0x0681},
+ {0x0682, 0x0682, 0x0682, 0x0682},
+ {0xFB76, 0xFB77, 0xFB78, 0xFB79},
+ {0xFB72, 0xFB73, 0xFB74, 0xFB75},
+ {0x0685, 0x0685, 0x0685, 0x0685},
+ {0xFB7A, 0xFB7B, 0xFB7C, 0xFB7D},
+ {0xFB7E, 0xFB7F, 0xFB80, 0xFB81},
+ {0xFB88, 0xFB89, 0xFB88, 0xFB89},
+ {0x0689, 0x0689, 0x0689, 0x0689},
+ {0x068A, 0x068A, 0x068A, 0x068A},
+ {0x068B, 0x068B, 0x068B, 0x068B},
+ {0xFB84, 0xFB85, 0xFB84, 0xFB85},
+ {0xFB82, 0xFB83, 0xFB82, 0xFB83},
+ {0xFB86, 0xFB87, 0xFB86, 0xFB87},
+ {0x068F, 0x068F, 0x068F, 0x068F},
+ {0x0690, 0x0690, 0x0690, 0x0690},
+ {0xFB8C, 0xFB8D, 0xFB8C, 0xFB8D},
+ {0x0692, 0x0692, 0x0692, 0x0692},
+ {0x0693, 0x0693, 0x0693, 0x0693},
+ {0x0694, 0x0694, 0x0694, 0x0694},
+ {0x0695, 0x0695, 0x0695, 0x0695},
+ {0x0696, 0x0696, 0x0696, 0x0696},
+ {0x0697, 0x0697, 0x0697, 0x0697},
+ {0xFB8A, 0xFB8B, 0xFB8A, 0xFB8B},
+ {0x0699, 0x0699, 0x0699, 0x0699},
+ {0x069A, 0x069A, 0x069A, 0x069A},
+ {0x069B, 0x069B, 0x069B, 0x069B},
+ {0x069C, 0x069C, 0x069C, 0x069C},
+ {0x069D, 0x069D, 0x069D, 0x069D},
+ {0x069E, 0x069E, 0x069E, 0x069E},
+ {0x069F, 0x069F, 0x069F, 0x069F},
+ {0x06A0, 0x06A0, 0x06A0, 0x06A0},
+ {0x06A1, 0x06A1, 0x06A1, 0x06A1},
+ {0x06A2, 0x06A2, 0x06A2, 0x06A2},
+ {0x06A3, 0x06A3, 0x06A3, 0x06A3},
+ {0xFB6A, 0xFB6B, 0xFB6C, 0xFB6D},
+ {0x06A5, 0x06A5, 0x06A5, 0x06A5},
+ {0xFB6E, 0xFB6F, 0xFB70, 0xFB71},
+ {0x06A7, 0x06A7, 0x06A7, 0x06A7},
+ {0x06A8, 0x06A8, 0x06A8, 0x06A8},
+ {0xFB8E, 0xFB8F, 0xFB90, 0xFB91},
+ {0x06AA, 0x06AA, 0x06AA, 0x06AA},
+ {0x06AB, 0x06AB, 0x06AB, 0x06AB},
+ {0x06AC, 0x06AC, 0x06AC, 0x06AC},
+ {0xFBD3, 0xFBD4, 0xFBD5, 0xFBD6},
+ {0x06AE, 0x06AE, 0x06AE, 0x06AE},
+ {0xFB92, 0xFB93, 0xFB94, 0xFB95},
+ {0x06B0, 0x06B0, 0x06B0, 0x06B0},
+ {0xFB9A, 0xFB9B, 0xFB9C, 0xFB9D},
+ {0x06B2, 0x06B2, 0x06B2, 0x06B2},
+ {0xFB96, 0xFB97, 0xFB98, 0xFB99},
+ {0x06B4, 0x06B4, 0x06B4, 0x06B4},
+ {0x06B5, 0x06B5, 0x06B5, 0x06B5},
+ {0x06B6, 0x06B6, 0x06B6, 0x06B6},
+ {0x06B7, 0x06B7, 0x06B7, 0x06B7},
+ {0x06B8, 0x06B8, 0x06B8, 0x06B8},
+ {0x06B9, 0x06B9, 0x06B9, 0x06B9},
+ {0xFB9E, 0xFB9F, 0xFBE8, 0xFBE9},
+ {0xFBA0, 0xFBA1, 0xFBA2, 0xFBA3},
+ {0x06BC, 0x06BC, 0x06BC, 0x06BC},
+ {0x06BD, 0x06BD, 0x06BD, 0x06BD},
+ {0xFBAA, 0xFBAB, 0xFBAC, 0xFBAD},
+ {0x06BF, 0x06BF, 0x06BF, 0x06BF},
+ {0xFBA4, 0xFBA5, 0xFBA4, 0xFBA5},
+ {0xFBA6, 0xFBA7, 0xFBA8, 0xFBA9},
+ {0x06C2, 0x06C2, 0x06C2, 0x06C2},
+ {0x06C3, 0x06C3, 0x06C3, 0x06C3},
+ {0x06C4, 0x06C4, 0x06C4, 0x06C4},
+ {0xFBE0, 0xFBE1, 0xFBE0, 0xFBE1},
+ {0xFBD9, 0xFBDA, 0xFBD9, 0xFBDA},
+ {0xFBD7, 0xFBD8, 0xFBD7, 0xFBD8},
+ {0xFBDB, 0xFBDC, 0xFBDB, 0xFBDC},
+ {0xFBE2, 0xFBE3, 0xFBE2, 0xFBE3},
+ {0x06CA, 0x06CA, 0x06CA, 0x06CA},
+ {0xFBDE, 0xFBDF, 0xFBDE, 0xFBDF},
+ {0xFBFC, 0xFBFD, 0xFBFE, 0xFBFF},
+ {0x06CD, 0x06CD, 0x06CD, 0x06CD},
+ {0x06CE, 0x06CE, 0x06CE, 0x06CE},
+ {0x06CF, 0x06CF, 0x06CF, 0x06CF},
+ {0xFBE4, 0xFBE5, 0xFBE6, 0xFBE7},
+ {0x06D1, 0x06D1, 0x06D1, 0x06D1},
+ {0xFBAE, 0xFBAF, 0xFBAE, 0xFBAF},
+ {0xFBB0, 0xFBB1, 0xFBB0, 0xFBB1},
+ {0x06D4, 0x06D4, 0x06D4, 0x06D4},
+ {0x06D5, 0x06D5, 0x06D5, 0x06D5},
+};
+static const FX_ARAALEF gs_FX_AlefTable[] = {
+ {0x0622, 0xFEF5},
+ {0x0623, 0xFEF7},
+ {0x0625, 0xFEF9},
+ {0x0627, 0xFEFB},
+};
+static const FX_ARASHADDA gs_FX_ShaddaTable[] = {
+ {0x064C, 0xFC5E},
+ {0x064D, 0xFC5F},
+ {0x064E, 0xFC60},
+ {0x064F, 0xFC61},
+ {0x0650, 0xFC62},
+};
+FX_LPCARBFORMTABLE FX_GetArabicFormTable(FX_WCHAR unicode)
+{
+ if (unicode < 0x622 || unicode > 0x6d5) {
+ return NULL;
+ }
+ return g_FX_ArabicFormTables + unicode - 0x622;
+}
+FX_WCHAR FX_GetArabicFromAlefTable(FX_WCHAR alef)
+{
+ static const FX_INT32 s_iAlefCount = sizeof(gs_FX_AlefTable) / sizeof(FX_ARAALEF);
+ for (FX_INT32 iStart = 0; iStart < s_iAlefCount; iStart ++) {
+ const FX_ARAALEF &v = gs_FX_AlefTable[iStart];
+ if (v.wAlef == alef) {
+ return v.wIsolated;
+ }
+ }
+ return alef;
+}
+FX_WCHAR FX_GetArabicFromShaddaTable(FX_WCHAR shadda)
+{
+ static const FX_INT32 s_iShaddaCount = sizeof(gs_FX_ShaddaTable) / sizeof(FX_ARASHADDA);
+ for (FX_INT32 iStart = 0; iStart < s_iShaddaCount; iStart ++) {
+ const FX_ARASHADDA &v = gs_FX_ShaddaTable[iStart];
+ if (v.wShadda == shadda) {
+ return v.wIsolated;
+ }
+ }
+ return shadda;
+}
+#ifdef __cplusplus
+};
+#endif
+IFX_ArabicChar* IFX_ArabicChar::Create()
+{
+ return FX_NEW CFX_ArabicChar;
+}
+FX_BOOL CFX_ArabicChar::IsArabicChar(FX_WCHAR wch) const
+{
+ FX_DWORD dwRet = (gs_FX_TextLayout_CodeProperties[(FX_WORD)wch] & FX_CHARTYPEBITSMASK);
+ return dwRet >= FX_CHARTYPE_ArabicAlef;
+}
+FX_BOOL CFX_ArabicChar::IsArabicFormChar(FX_WCHAR wch) const
+{
+ return (gs_FX_TextLayout_CodeProperties[(FX_WORD)wch] & FX_CHARTYPEBITSMASK) == FX_CHARTYPE_ArabicForm;
+}
+FX_WCHAR CFX_ArabicChar::GetFormChar(FX_WCHAR wch, FX_WCHAR prev, FX_WCHAR next) const
+{
+ CFX_Char c(wch, gs_FX_TextLayout_CodeProperties[(FX_WORD)wch]);
+ CFX_Char p(prev, gs_FX_TextLayout_CodeProperties[(FX_WORD)prev]);
+ CFX_Char n(next, gs_FX_TextLayout_CodeProperties[(FX_WORD)next]);
+ return GetFormChar(&c, &p, &n);
+}
+FX_WCHAR CFX_ArabicChar::GetFormChar(const CFX_Char *cur, const CFX_Char *prev, const CFX_Char *next) const
+{
+ FX_CHARTYPE eCur;
+ FX_WCHAR wCur;
+ FX_LPCARBFORMTABLE ft = ParseChar(cur, wCur, eCur);
+ if (eCur < FX_CHARTYPE_ArabicAlef || eCur >= FX_CHARTYPE_ArabicNormal) {
+ return wCur;
+ }
+ FX_CHARTYPE ePrev;
+ FX_WCHAR wPrev;
+ ParseChar(prev, wPrev, ePrev);
+ if (wPrev == 0x0644 && eCur == FX_CHARTYPE_ArabicAlef) {
+ return 0xFEFF;
+ }
+ FX_CHARTYPE eNext;
+ FX_WCHAR wNext;
+ ParseChar(next, wNext, eNext);
+ FX_BOOL bAlef = (eNext == FX_CHARTYPE_ArabicAlef && wCur == 0x644);
+ if (ePrev < FX_CHARTYPE_ArabicAlef) {
+ if (bAlef) {
+ return FX_GetArabicFromAlefTable(wNext);
+ } else {
+ return (eNext < FX_CHARTYPE_ArabicAlef) ? ft->wIsolated : ft->wInitial;
+ }
+ } else {
+ if (bAlef) {
+ wCur = FX_GetArabicFromAlefTable(wNext);
+ return (ePrev != FX_CHARTYPE_ArabicDistortion) ? wCur : ++ wCur;
+ } else if (ePrev == FX_CHARTYPE_ArabicAlef || ePrev == FX_CHARTYPE_ArabicSpecial) {
+ return (eNext < FX_CHARTYPE_ArabicAlef) ? ft->wIsolated : ft->wInitial;
+ } else {
+ return (eNext < FX_CHARTYPE_ArabicAlef) ? ft->wFinal : ft->wMedial;
+ }
+ }
+}
+FX_LPCARBFORMTABLE CFX_ArabicChar::ParseChar(const CFX_Char *pTC, FX_WCHAR &wChar, FX_CHARTYPE &eType) const
+{
+ if (pTC == NULL) {
+ eType = FX_CHARTYPE_Unknown;
+ wChar = 0xFEFF;
+ return NULL;
+ }
+ eType = (FX_CHARTYPE)pTC->GetCharType();
+ wChar = (FX_WCHAR)pTC->m_wCharCode;
+ FX_LPCARBFORMTABLE pFT = FX_GetArabicFormTable(wChar);
+ if (pFT == NULL || eType >= FX_CHARTYPE_ArabicNormal) {
+ eType = FX_CHARTYPE_Unknown;
+ }
+ return pFT;
+}
+void FX_BidiReverseString(CFX_WideString &wsText, FX_INT32 iStart, FX_INT32 iCount)
+{
+ FXSYS_assert(iStart > -1 && iStart < wsText.GetLength());
+ FXSYS_assert(iCount >= 0 && iStart + iCount <= wsText.GetLength());
+ FX_WCHAR wch;
+ FX_LPWSTR pStart = (FX_LPWSTR)(FX_LPCWSTR)wsText;
+ pStart += iStart;
+ FX_LPWSTR pEnd = pStart + iCount - 1;
+ while (pStart < pEnd) {
+ wch = *pStart;
+ *pStart ++ = *pEnd;
+ *pEnd -- = wch;
+ }
+}
+void FX_BidiSetDeferredRun(CFX_Int32Array &values, FX_INT32 iStart, FX_INT32 iCount, FX_INT32 iValue)
+{
+ FXSYS_assert(iStart > -1 && iStart <= values.GetSize());
+ FXSYS_assert(iStart - iCount > -1);
+ for (FX_INT32 i = iStart - 1; i >= iStart - iCount; i --) {
+ values.SetAt(i, iValue);
+ }
+}
+const FX_INT32 gc_FX_BidiNTypes[] = {
+ FX_BIDICLASS_N,
+ FX_BIDICLASS_L,
+ FX_BIDICLASS_R,
+ FX_BIDICLASS_AN,
+ FX_BIDICLASS_EN,
+ FX_BIDICLASS_AL,
+ FX_BIDICLASS_NSM,
+ FX_BIDICLASS_CS,
+ FX_BIDICLASS_ES,
+ FX_BIDICLASS_ET,
+ FX_BIDICLASS_BN,
+ FX_BIDICLASS_BN,
+ FX_BIDICLASS_N,
+ FX_BIDICLASS_B,
+ FX_BIDICLASS_RLO,
+ FX_BIDICLASS_RLE,
+ FX_BIDICLASS_LRO,
+ FX_BIDICLASS_LRE,
+ FX_BIDICLASS_PDF,
+ FX_BIDICLASS_ON,
+};
+void FX_BidiClassify(const CFX_WideString &wsText, CFX_Int32Array &classes, FX_BOOL bWS)
+{
+ FXSYS_assert(wsText.GetLength() == classes.GetSize());
+ FX_INT32 iCount = wsText.GetLength();
+ FX_LPCWSTR pwsStart = (FX_LPCWSTR)wsText;
+ FX_WCHAR wch;
+ FX_INT32 iCls;
+ if (bWS) {
+ for (FX_INT32 i = 0; i < iCount; i ++) {
+ wch = *pwsStart ++;
+ iCls = ((gs_FX_TextLayout_CodeProperties[(FX_WORD)wch] & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS);
+ classes.SetAt(i, iCls);
+ }
+ } else {
+ for (FX_INT32 i = 0; i < iCount; i ++) {
+ wch = *pwsStart ++;
+ iCls = ((gs_FX_TextLayout_CodeProperties[(FX_WORD)wch] & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS);
+ classes.SetAt(i, gc_FX_BidiNTypes[iCls]);
+ }
+ }
+}
+FX_INT32 FX_BidiResolveExplicit(FX_INT32 iBaseLevel, FX_INT32 iDirection, CFX_Int32Array &classes, CFX_Int32Array &levels, FX_INT32 iStart, FX_INT32 iCount, FX_INT32 iNest)
+{
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL && iNest >= 0);
+ FXSYS_assert(classes.GetSize() == levels.GetSize());
+ FXSYS_assert(iStart >= 0 && iStart < classes.GetSize());
+ FXSYS_assert(iCount >= 0 && iStart + iCount <= classes.GetSize());
+ if (iCount < 1) {
+ return 0;
+ }
+#if 0
+ FX_INT32 iLastNest = iNest;
+#endif
+ FX_INT32 iSize = classes.GetSize();
+ FX_INT32 i = iStart, iCur, iCls;
+ for (; i < iSize && iCount > 0; i ++, iCount --) {
+ iCur = iCls = classes.GetAt(i);
+#if 0
+ switch (iCls) {
+ case FX_BIDICLASS_LRO:
+ case FX_BIDICLASS_LRE:
+ classes.SetAt(i, FX_BIDICLASS_BN);
+ iCls = FX_BIDICLASS_BN;
+ iNest ++;
+ if (FX_BidiGreaterEven(iBaseLevel) <= MAX_LEVEL) {
+ FX_INT32 iLevel = FX_BidiGreaterEven(iBaseLevel);
+ levels.SetAt(i, iLevel);
+ i += FX_BidiResolveExplicit(iLevel,
+ (iCls == FX_BIDICLASS_LRE ? FX_BIDICLASS_N : FX_BIDICLASS_L),
+ classes,
+ levels,
+ i + 1,
+ iCount - 1,
+ iNest);
+ iNest --;
+ continue;
+ }
+ break;
+ case FX_BIDICLASS_RLO:
+ case FX_BIDICLASS_RLE:
+ classes.SetAt(i, FX_BIDICLASS_BN);
+ iCls = FX_BIDICLASS_BN;
+ iNest ++;
+ if (FX_BidiGreaterOdd(iBaseLevel) <= MAX_LEVEL) {
+ FX_INT32 iLevel = FX_BidiGreaterOdd(iBaseLevel);
+ levels.SetAt(i, iLevel);
+ i += FX_BidiResolveExplicit(iLevel,
+ (iCls == FX_BIDICLASS_RLE ? FX_BIDICLASS_N : FX_BIDICLASS_R),
+ classes,
+ levels,
+ i + 1,
+ iCount - 1,
+ iNest);
+ iNest --;
+ continue;
+ }
+ break;
+ case FX_BIDICLASS_PDF:
+ classes.SetAt(i, FX_BIDICLASS_BN);
+ iCls = FX_BIDICLASS_BN;
+ if (iNest) {
+ if (iLastNest < iNest) {
+ iNest --;
+ } else {
+ iSize = i;
+ }
+ }
+ break;
+ }
+ iCur = iCls;
+#endif
+ if (iDirection != FX_BIDICLASS_N) {
+ iCls = iDirection;
+ }
+ if (iCur != FX_BIDICLASS_BN) {
+ classes.SetAt(i, iCls);
+ }
+ levels.SetAt(i, iBaseLevel);
+ }
+ return i - iStart;
+}
+const FX_INT32 gc_FX_BidiWeakStates[][10] = {
+ {FX_BWSao, FX_BWSxl, FX_BWSxr, FX_BWScn, FX_BWScn, FX_BWSxa, FX_BWSxa, FX_BWSao, FX_BWSao, FX_BWSao},
+ {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSxr, FX_BWSro, FX_BWSro, FX_BWSrt},
+ {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSxl, FX_BWSlo, FX_BWSlo, FX_BWSlt},
+ {FX_BWSao, FX_BWSxl, FX_BWSxr, FX_BWScn, FX_BWScn, FX_BWSxa, FX_BWSao, FX_BWSao, FX_BWSao, FX_BWSao},
+ {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSro, FX_BWSro, FX_BWSro, FX_BWSrt},
+ {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlo, FX_BWSlo, FX_BWSlo, FX_BWSlt},
+ {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSrt, FX_BWSro, FX_BWSro, FX_BWSrt},
+ {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlt, FX_BWSlo, FX_BWSlo, FX_BWSlt},
+ {FX_BWSao, FX_BWSxl, FX_BWSxr, FX_BWScn, FX_BWScn, FX_BWSxa, FX_BWScn, FX_BWSac, FX_BWSao, FX_BWSao},
+ {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSra, FX_BWSrc, FX_BWSro, FX_BWSrt},
+ {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSre, FX_BWSrs, FX_BWSrs, FX_BWSret},
+ {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSla, FX_BWSlc, FX_BWSlo, FX_BWSlt},
+ {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSle, FX_BWSls, FX_BWSls, FX_BWSlet},
+ {FX_BWSao, FX_BWSxl, FX_BWSxr, FX_BWScn, FX_BWScn, FX_BWSxa, FX_BWSao, FX_BWSao, FX_BWSao, FX_BWSao},
+ {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSro, FX_BWSro, FX_BWSro, FX_BWSrt},
+ {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSro, FX_BWSro, FX_BWSro, FX_BWSrt},
+ {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlo, FX_BWSlo, FX_BWSlo, FX_BWSlt},
+ {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlo, FX_BWSlo, FX_BWSlo, FX_BWSlt},
+ {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSret, FX_BWSro, FX_BWSro, FX_BWSret},
+ {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlet, FX_BWSlo, FX_BWSlo, FX_BWSlet},
+};
+const FX_INT32 gc_FX_BidiWeakActions[][10] = {
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxA, FX_BWAxxR, FX_BWAxxR, FX_BWAxxN, FX_BWAxxN, FX_BWAxxN},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR, FX_BWAxxR, FX_BWAxxN, FX_BWAxxN, FX_BWAxIx},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR, FX_BWAxxL, FX_BWAxxN, FX_BWAxxN, FX_BWAxIx},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxA, FX_BWAxxR, FX_BWAxxN, FX_BWAxxN, FX_BWAxxN, FX_BWAxxN},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR, FX_BWAxxN, FX_BWAxxN, FX_BWAxxN, FX_BWAxIx},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR, FX_BWAxxN, FX_BWAxxN, FX_BWAxxN, FX_BWAxIx},
+ {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAExE, FX_BWANxR, FX_BWAxIx, FX_BWANxN, FX_BWANxN, FX_BWAxIx},
+ {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWALxL, FX_BWANxR, FX_BWAxIx, FX_BWANxN, FX_BWANxN, FX_BWAxIx},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxA, FX_BWAxxR, FX_BWAxxA, FX_BWAxIx, FX_BWAxxN, FX_BWAxxN},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR, FX_BWAxxA, FX_BWAxIx, FX_BWAxxN, FX_BWAxIx},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR, FX_BWAxxE, FX_BWAxIx, FX_BWAxIx, FX_BWAxxE},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR, FX_BWAxxA, FX_BWAxIx, FX_BWAxxN, FX_BWAxIx},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR, FX_BWAxxL, FX_BWAxIx, FX_BWAxIx, FX_BWAxxL},
+ {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAAxx, FX_BWAAxA, FX_BWANxR, FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANxN},
+ {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAAxx, FX_BWANxE, FX_BWANxR, FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANIx},
+ {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAExE, FX_BWANxR, FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANIx},
+ {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAAxx, FX_BWANxL, FX_BWANxR, FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANIx},
+ {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWALxL, FX_BWANxR, FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANIx},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR, FX_BWAxxE, FX_BWAxxN, FX_BWAxxN, FX_BWAxxE},
+ {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR, FX_BWAxxL, FX_BWAxxN, FX_BWAxxN, FX_BWAxxL},
+};
+void FX_BidiResolveWeak(FX_INT32 iBaseLevel, CFX_Int32Array &classes, CFX_Int32Array &levels)
+{
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ FXSYS_assert(classes.GetSize() == levels.GetSize());
+ FX_INT32 iSize = classes.GetSize();
+ if (iSize < 1) {
+ return;
+ }
+ iSize --;
+ FX_INT32 iLevelCur = iBaseLevel;
+ FX_INT32 iState = FX_IsOdd(iBaseLevel) ? FX_BWSxr : FX_BWSxl;
+ FX_INT32 i = 0, iCount = 0, iClsCur, iClsRun, iClsNew, iAction;
+ for (; i <= iSize; i ++) {
+ iClsCur = classes.GetAt(i);
+#if 0
+ if (iClsCur == FX_BIDICLASS_BN) {
+ levels.SetAt(i, iLevelCur);
+ if (i == iSize && iLevelCur != iBaseLevel) {
+ iClsCur = FX_BidiDirection(iLevelCur);
+ classes.SetAt(i, iClsCur);
+ } else if (i < iSize) {
+ FX_INT32 iLevelNext, iLevelNew;
+ iClsNew = classes.GetAt(i + 1);
+ iLevelNext = levels.GetAt(i + 1);
+ if (iClsNew != FX_BIDICLASS_BN && iLevelCur != iLevelNext) {
+ iLevelNew = iLevelNext;
+ if (iLevelCur > iLevelNew) {
+ iLevelNew = iLevelCur;
+ }
+ levels.SetAt(i, iLevelNew);
+ iClsCur = FX_BidiDirection(iLevelNew);
+ classes.SetAt(i, iClsCur);
+ iLevelCur = iLevelNext;
+ } else {
+ if (iCount) {
+ iCount ++;
+ }
+ continue;
+ }
+ } else {
+ if (iCount) {
+ iCount ++;
+ }
+ continue;
+ }
+ }
+#endif
+ FXSYS_assert(iClsCur <= FX_BIDICLASS_BN);
+ iAction = gc_FX_BidiWeakActions[iState][iClsCur];
+ iClsRun = FX_BidiGetDeferredType(iAction);
+ if (iClsRun != FX_BIDIWEAKACTION_XX && iCount > 0) {
+ FX_BidiSetDeferredRun(classes, i, iCount, iClsRun);
+ iCount = 0;
+ }
+ iClsNew = FX_BidiGetResolvedType(iAction);
+ if (iClsNew != FX_BIDIWEAKACTION_XX) {
+ classes.SetAt(i, iClsNew);
+ }
+ if (FX_BIDIWEAKACTION_IX & iAction) {
+ iCount ++;
+ }
+ iState = gc_FX_BidiWeakStates[iState][iClsCur];
+ }
+ iClsCur = FX_BidiDirection(iLevelCur);
+ iClsRun = FX_BidiGetDeferredType(gc_FX_BidiWeakActions[iState][iClsCur]);
+ if (iClsRun != FX_BIDIWEAKACTION_XX && iCount > 0) {
+ FX_BidiSetDeferredRun(classes, i, iCount, iClsRun);
+ }
+}
+const FX_INT32 gc_FX_BidiNeutralStates[][5] = {
+ {FX_BNSrn, FX_BNSl, FX_BNSr, FX_BNSr, FX_BNSr},
+ {FX_BNSln, FX_BNSl, FX_BNSr, FX_BNSa, FX_BNSl},
+ {FX_BNSrn, FX_BNSl, FX_BNSr, FX_BNSr, FX_BNSr},
+ {FX_BNSln, FX_BNSl, FX_BNSr, FX_BNSa, FX_BNSl},
+ {FX_BNSna, FX_BNSl, FX_BNSr, FX_BNSa, FX_BNSl},
+ {FX_BNSna, FX_BNSl, FX_BNSr, FX_BNSa, FX_BNSl},
+};
+const FX_INT32 gc_FX_BidiNeutralActions[][5] = {
+ {FX_BNAIn, 0, 0, 0, 0 },
+ {FX_BNAIn, 0, 0, 0, FX_BCL },
+ {FX_BNAIn, FX_BNAEn, FX_BNARn, FX_BNARn, FX_BNARn },
+ {FX_BNAIn, FX_BNALn, FX_BNAEn, FX_BNAEn, FX_BNALnL },
+ {FX_BNAIn, 0, 0, 0, FX_BCL },
+ {FX_BNAIn, FX_BNAEn, FX_BNARn, FX_BNARn, FX_BNAEn },
+};
+FX_INT32 FX_BidiGetDeferredNeutrals(FX_INT32 iAction, FX_INT32 iLevel)
+{
+ iAction = (iAction >> 4) & 0xF;
+ if (iAction == (FX_BIDINEUTRALACTION_En >> 4)) {
+ return FX_BidiDirection(iLevel);
+ } else {
+ return iAction;
+ }
+}
+FX_INT32 FX_BidiGetResolvedNeutrals(FX_INT32 iAction)
+{
+ iAction = (iAction & 0xF);
+ if (iAction == FX_BIDINEUTRALACTION_In) {
+ return 0;
+ } else {
+ return iAction;
+ }
+}
+void FX_BidiResolveNeutrals(FX_INT32 iBaseLevel, CFX_Int32Array &classes, const CFX_Int32Array &levels)
+{
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ FXSYS_assert(classes.GetSize() == levels.GetSize());
+ FX_INT32 iSize = classes.GetSize();
+ if (iSize < 1) {
+ return;
+ }
+ iSize --;
+ FX_INT32 iLevel = iBaseLevel;
+ FX_INT32 iState = FX_IsOdd(iBaseLevel) ? FX_BNSr : FX_BNSl;
+ FX_INT32 i = 0, iCount = 0, iClsCur, iClsRun, iClsNew, iAction;
+ for (; i <= iSize; i ++) {
+ iClsCur = classes.GetAt(i);
+ if (iClsCur == FX_BIDICLASS_BN) {
+ if (iCount) {
+ iCount ++;
+ }
+ continue;
+ }
+ FXSYS_assert(iClsCur < FX_BIDICLASS_AL);
+ iAction = gc_FX_BidiNeutralActions[iState][iClsCur];
+ iClsRun = FX_BidiGetDeferredNeutrals(iAction, iLevel);
+ if (iClsRun != FX_BIDICLASS_N && iCount > 0) {
+ FX_BidiSetDeferredRun(classes, i, iCount, iClsRun);
+ iCount = 0;
+ }
+ iClsNew = FX_BidiGetResolvedNeutrals(iAction);
+ if (iClsNew != FX_BIDICLASS_N) {
+ classes.SetAt(i, iClsNew);
+ }
+ if (FX_BIDINEUTRALACTION_In & iAction) {
+ iCount ++;
+ }
+ iState = gc_FX_BidiNeutralStates[iState][iClsCur];
+ iLevel = levels.GetAt(i);
+ }
+ iClsCur = FX_BidiDirection(iLevel);
+ iClsRun = FX_BidiGetDeferredNeutrals(gc_FX_BidiNeutralActions[iState][iClsCur], iLevel);
+ if (iClsRun != FX_BIDICLASS_N && iCount > 0) {
+ FX_BidiSetDeferredRun(classes, i, iCount, iClsRun);
+ }
+}
+const FX_INT32 gc_FX_BidiAddLevel[][4] = {
+ {0, 1, 2, 2},
+ {1, 0, 1, 1},
+};
+void FX_BidiResolveImplicit(const CFX_Int32Array &classes, CFX_Int32Array &levels)
+{
+ FXSYS_assert(classes.GetSize() == levels.GetSize());
+ FX_INT32 iSize = classes.GetSize();
+ if (iSize < 1) {
+ return;
+ }
+ iSize --;
+ FX_INT32 iCls, iLevel;
+ for (FX_INT32 i = 0; i <= iSize; i ++) {
+ iCls = classes.GetAt(i);
+ if (iCls == FX_BIDICLASS_BN) {
+ continue;
+ }
+ FXSYS_assert(iCls > FX_BIDICLASS_ON && iCls < FX_BIDICLASS_AL);
+ iLevel = levels.GetAt(i);
+ iLevel += gc_FX_BidiAddLevel[FX_IsOdd(iLevel)][iCls - 1];
+ levels.SetAt(i, iLevel);
+ }
+}
+void FX_BidiResolveWhitespace(FX_INT32 iBaseLevel, const CFX_Int32Array &classes, CFX_Int32Array &levels)
+{
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ FXSYS_assert(classes.GetSize() == levels.GetSize());
+ FX_INT32 iSize = classes.GetSize();
+ if (iSize < 1) {
+ return;
+ }
+ iSize --;
+ FX_INT32 iLevel = iBaseLevel;
+ FX_INT32 i = 0, iCount = 0;
+ for (; i <= iSize; i ++) {
+ switch(classes.GetAt(i)) {
+ case FX_BIDICLASS_WS:
+ iCount ++;
+ break;
+ case FX_BIDICLASS_RLE:
+ case FX_BIDICLASS_LRE:
+ case FX_BIDICLASS_LRO:
+ case FX_BIDICLASS_RLO:
+ case FX_BIDICLASS_PDF:
+ case FX_BIDICLASS_BN:
+ levels.SetAt(i, iLevel);
+ iCount ++;
+ break;
+ case FX_BIDICLASS_S:
+ case FX_BIDICLASS_B:
+ if (iCount > 0) {
+ FX_BidiSetDeferredRun(levels, i, iCount, iBaseLevel);
+ }
+ levels.SetAt(i, iBaseLevel);
+ iCount = 0;
+ break;
+ default:
+ iCount = 0;
+ break;
+ }
+ iLevel = levels.GetAt(i);
+ }
+ if (iCount > 0) {
+ FX_BidiSetDeferredRun(levels, i, iCount, iBaseLevel);
+ }
+}
+FX_INT32 FX_BidiReorderLevel(FX_INT32 iBaseLevel, CFX_WideString &wsText, const CFX_Int32Array &levels, FX_INT32 iStart, FX_BOOL bReverse)
+{
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ FXSYS_assert(wsText.GetLength() == levels.GetSize());
+ FXSYS_assert(iStart >= 0 && iStart < wsText.GetLength());
+ FX_INT32 iSize = wsText.GetLength();
+ if (iSize < 1) {
+ return 0;
+ }
+ bReverse = bReverse || FX_IsOdd(iBaseLevel);
+ FX_INT32 i = iStart, iLevel;
+ for (; i < iSize; i ++) {
+ if ((iLevel = levels.GetAt(i)) == iBaseLevel) {
+ continue;
+ }
+ if (iLevel < iBaseLevel) {
+ break;
+ }
+ i += FX_BidiReorderLevel(iBaseLevel + 1, wsText, levels, i, bReverse) - 1;
+ }
+ FX_INT32 iCount = i - iStart;
+ if (bReverse && iCount > 1) {
+ FX_BidiReverseString(wsText, iStart, iCount);
+ }
+ return iCount;
+}
+void FX_BidiReorder(FX_INT32 iBaseLevel, CFX_WideString &wsText, const CFX_Int32Array &levels)
+{
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ FXSYS_assert(wsText.GetLength() == levels.GetSize());
+ FX_INT32 iSize = wsText.GetLength();
+ if (iSize < 1) {
+ return;
+ }
+ FX_INT32 i = 0;
+ while (i < iSize) {
+ i += FX_BidiReorderLevel(iBaseLevel, wsText, levels, i, FALSE);
+ }
+}
+void FX_BidiLine(CFX_WideString &wsText, FX_INT32 iBaseLevel)
+{
+ FX_INT32 iLength = wsText.GetLength();
+ if (iLength < 2) {
+ return;
+ }
+ CFX_Int32Array classes, levels;
+ classes.SetAtGrow(iLength - 1, 0);
+ levels.SetAtGrow(iLength - 1, 0);
+ FX_BidiClassify(wsText, classes, FALSE);
+ FX_BidiResolveExplicit(iBaseLevel, FX_BIDICLASS_N, classes, levels, 0, iLength, 0);
+ FX_BidiResolveWeak(iBaseLevel, classes, levels);
+ FX_BidiResolveNeutrals(iBaseLevel, classes, levels);
+ FX_BidiResolveImplicit(classes, levels);
+ FX_BidiClassify(wsText, classes, TRUE);
+ FX_BidiResolveWhitespace(iBaseLevel, classes, levels);
+ FX_BidiReorder(iBaseLevel, wsText, levels);
+ classes.RemoveAll();
+ levels.RemoveAll();
+}
+template<class baseType>
+class CFX_BidiLineTemplate
+{
+public:
+ void FX_BidiReverseString(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iStart, FX_INT32 iCount)
+ {
+ FXSYS_assert(iStart > -1 && iStart < chars.GetSize());
+ FXSYS_assert(iCount >= 0 && iStart + iCount <= chars.GetSize());
+ baseType *pStart, *pEnd;
+ FX_INT32 iEnd = iStart + iCount - 1, iTemp;
+ while (iStart < iEnd) {
+ pStart = chars.GetDataPtr(iStart ++);
+ pEnd = chars.GetDataPtr(iEnd --);
+ iTemp = pStart->m_iBidiPos;
+ pStart->m_iBidiPos = pEnd->m_iBidiPos;
+ pEnd->m_iBidiPos = iTemp;
+ }
+ }
+ void FX_BidiSetDeferredRun(CFX_ArrayTemplate<baseType> &chars, FX_BOOL bClass, FX_INT32 iStart, FX_INT32 iCount, FX_INT32 iValue)
+ {
+ FXSYS_assert(iStart > -1 && iStart <= chars.GetSize());
+ FXSYS_assert(iStart - iCount > -1);
+ baseType *pTC;
+ FX_INT32 iLast = iStart - iCount;
+ if (bClass) {
+ for (FX_INT32 i = iStart - 1; i >= iLast; i --) {
+ pTC = chars.GetDataPtr(i);
+ pTC->m_iBidiClass = (FX_INT16)iValue;
+ }
+ } else {
+ for (FX_INT32 i = iStart - 1; i >= iLast; i --) {
+ pTC = chars.GetDataPtr(i);
+ pTC->m_iBidiLevel = (FX_INT16)iValue;
+ }
+ }
+ }
+ void FX_BidiClassify(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount, FX_BOOL bWS)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ baseType *pTC;
+ if (bWS) {
+ for (FX_INT32 i = 0; i < iCount; i ++) {
+ pTC = chars.GetDataPtr(i);
+ pTC->m_iBidiClass = (FX_INT16)(pTC->m_dwCharProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS;
+ }
+ } else {
+ for (FX_INT32 i = 0; i < iCount; i ++) {
+ pTC = chars.GetDataPtr(i);
+ pTC->m_iBidiClass = (FX_INT16)gc_FX_BidiNTypes[(pTC->m_dwCharProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS];
+ }
+ }
+ }
+ void FX_BidiResolveExplicit(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount, FX_INT32 iBaseLevel)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ if (iCount < 1) {
+ return;
+ }
+ baseType *pTC;
+ for (FX_INT32 i = 0; i < iCount; i ++) {
+ pTC = chars.GetDataPtr(i);
+ pTC->m_iBidiLevel = (FX_INT16)iBaseLevel;
+ }
+ }
+ void FX_BidiResolveWeak(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount, FX_INT32 iBaseLevel)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ iCount --;
+ if (iCount < 1) {
+ return;
+ }
+ baseType *pTC, *pTCNext;
+ FX_INT32 iLevelCur = iBaseLevel;
+ FX_INT32 iState = FX_IsOdd(iBaseLevel) ? FX_BWSxr : FX_BWSxl;
+ FX_INT32 i = 0, iNum = 0, iClsCur, iClsRun, iClsNew, iAction;
+ for (; i <= iCount; i ++) {
+ pTC = chars.GetDataPtr(i);
+ iClsCur = pTC->m_iBidiClass;
+ if (iClsCur == FX_BIDICLASS_BN) {
+ pTC->m_iBidiLevel = (FX_INT16)iLevelCur;
+ if (i == iCount && iLevelCur != iBaseLevel) {
+ iClsCur = FX_BidiDirection(iLevelCur);
+ pTC->m_iBidiClass = (FX_INT16)iClsCur;
+ } else if (i < iCount) {
+ pTCNext = chars.GetDataPtr(i + 1);
+ FX_INT32 iLevelNext, iLevelNew;
+ iClsNew = pTCNext->m_iBidiClass;
+ iLevelNext = pTCNext->m_iBidiLevel;
+ if (iClsNew != FX_BIDICLASS_BN && iLevelCur != iLevelNext) {
+ iLevelNew = iLevelNext;
+ if (iLevelCur > iLevelNew) {
+ iLevelNew = iLevelCur;
+ }
+ pTC->m_iBidiLevel = (FX_INT16)iLevelNew;
+ iClsCur = FX_BidiDirection(iLevelNew);
+ pTC->m_iBidiClass = (FX_INT16)iClsCur;
+ iLevelCur = iLevelNext;
+ } else {
+ if (iNum > 0) {
+ iNum ++;
+ }
+ continue;
+ }
+ } else {
+ if (iNum > 0) {
+ iNum ++;
+ }
+ continue;
+ }
+ }
+ FXSYS_assert(iClsCur <= FX_BIDICLASS_BN);
+ iAction = gc_FX_BidiWeakActions[iState][iClsCur];
+ iClsRun = FX_BidiGetDeferredType(iAction);
+ if (iClsRun != FX_BIDIWEAKACTION_XX && iNum > 0) {
+ FX_BidiSetDeferredRun(chars, TRUE, i, iNum, iClsRun);
+ iNum = 0;
+ }
+ iClsNew = FX_BidiGetResolvedType(iAction);
+ if (iClsNew != FX_BIDIWEAKACTION_XX) {
+ pTC->m_iBidiClass = (FX_INT16)iClsNew;
+ }
+ if (FX_BIDIWEAKACTION_IX & iAction) {
+ iNum ++;
+ }
+ iState = gc_FX_BidiWeakStates[iState][iClsCur];
+ }
+ if (iNum > 0) {
+ iClsCur = FX_BidiDirection(iBaseLevel);
+ iClsRun = FX_BidiGetDeferredType(gc_FX_BidiWeakActions[iState][iClsCur]);
+ if (iClsRun != FX_BIDIWEAKACTION_XX) {
+ FX_BidiSetDeferredRun(chars, TRUE, i, iNum, iClsRun);
+ }
+ }
+ }
+ void FX_BidiResolveNeutrals(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount, FX_INT32 iBaseLevel)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ iCount --;
+ if (iCount < 1) {
+ return;
+ }
+ baseType *pTC;
+ FX_INT32 iLevel = iBaseLevel;
+ FX_INT32 iState = FX_IsOdd(iBaseLevel) ? FX_BNSr : FX_BNSl;
+ FX_INT32 i = 0, iNum = 0, iClsCur, iClsRun, iClsNew, iAction;
+ for (; i <= iCount; i ++) {
+ pTC = chars.GetDataPtr(i);
+ iClsCur = pTC->m_iBidiClass;
+ if (iClsCur == FX_BIDICLASS_BN) {
+ if (iNum) {
+ iNum ++;
+ }
+ continue;
+ }
+ FXSYS_assert(iClsCur < FX_BIDICLASS_AL);
+ iAction = gc_FX_BidiNeutralActions[iState][iClsCur];
+ iClsRun = FX_BidiGetDeferredNeutrals(iAction, iLevel);
+ if (iClsRun != FX_BIDICLASS_N && iNum > 0) {
+ FX_BidiSetDeferredRun(chars, TRUE, i, iNum, iClsRun);
+ iNum = 0;
+ }
+ iClsNew = FX_BidiGetResolvedNeutrals(iAction);
+ if (iClsNew != FX_BIDICLASS_N) {
+ pTC->m_iBidiClass = (FX_INT16)iClsNew;
+ }
+ if (FX_BIDINEUTRALACTION_In & iAction) {
+ iNum ++;
+ }
+ iState = gc_FX_BidiNeutralStates[iState][iClsCur];
+ iLevel = pTC->m_iBidiLevel;
+ }
+ if (iNum > 0) {
+ iClsCur = FX_BidiDirection(iLevel);
+ iClsRun = FX_BidiGetDeferredNeutrals(gc_FX_BidiNeutralActions[iState][iClsCur], iLevel);
+ if (iClsRun != FX_BIDICLASS_N) {
+ FX_BidiSetDeferredRun(chars, TRUE, i, iNum, iClsRun);
+ }
+ }
+ }
+ void FX_BidiResolveImplicit(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ baseType *pTC;
+ FX_INT32 iCls, iLevel;
+ for (FX_INT32 i = 0; i < iCount; i ++) {
+ pTC = chars.GetDataPtr(i);
+ iCls = pTC->m_iBidiClass;
+ if (iCls == FX_BIDICLASS_BN) {
+ continue;
+ }
+ FXSYS_assert(iCls > FX_BIDICLASS_ON && iCls < FX_BIDICLASS_AL);
+ iLevel = pTC->m_iBidiLevel;
+ iLevel += gc_FX_BidiAddLevel[FX_IsOdd(iLevel)][iCls - 1];
+ pTC->m_iBidiLevel = (FX_INT16)iLevel;
+ }
+ }
+ void FX_BidiResolveWhitespace(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount, FX_INT32 iBaseLevel)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ if (iCount < 1) {
+ return;
+ }
+ iCount --;
+ FX_INT32 iLevel = iBaseLevel;
+ FX_INT32 i = 0, iNum = 0;
+ baseType *pTC;
+ for (; i <= iCount; i ++) {
+ pTC = chars.GetDataPtr(i);
+ switch(pTC->m_iBidiClass) {
+ case FX_BIDICLASS_WS:
+ iNum ++;
+ break;
+ case FX_BIDICLASS_RLE:
+ case FX_BIDICLASS_LRE:
+ case FX_BIDICLASS_LRO:
+ case FX_BIDICLASS_RLO:
+ case FX_BIDICLASS_PDF:
+ case FX_BIDICLASS_BN:
+ pTC->m_iBidiLevel = (FX_INT16)iLevel;
+ iNum ++;
+ break;
+ case FX_BIDICLASS_S:
+ case FX_BIDICLASS_B:
+ if (iNum > 0) {
+ FX_BidiSetDeferredRun(chars, FALSE, i, iNum, iBaseLevel);
+ }
+ pTC->m_iBidiLevel = (FX_INT16)iBaseLevel;
+ iNum = 0;
+ break;
+ default:
+ iNum = 0;
+ break;
+ }
+ iLevel = pTC->m_iBidiLevel;
+ }
+ if (iNum > 0) {
+ FX_BidiSetDeferredRun(chars, FALSE, i, iNum, iBaseLevel);
+ }
+ }
+ FX_INT32 FX_BidiReorderLevel(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount, FX_INT32 iBaseLevel, FX_INT32 iStart, FX_BOOL bReverse)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ FXSYS_assert(iStart >= 0 && iStart < iCount);
+ if (iCount < 1) {
+ return 0;
+ }
+ baseType *pTC;
+ bReverse = bReverse || FX_IsOdd(iBaseLevel);
+ FX_INT32 i = iStart, iLevel;
+ for (; i < iCount; i ++) {
+ pTC = chars.GetDataPtr(i);
+ if ((iLevel = pTC->m_iBidiLevel) == iBaseLevel) {
+ continue;
+ }
+ if (iLevel < iBaseLevel) {
+ break;
+ }
+ i += FX_BidiReorderLevel(chars, iCount, iBaseLevel + 1, i, bReverse) - 1;
+ }
+ FX_INT32 iNum = i - iStart;
+ if (bReverse && iNum > 1) {
+ FX_BidiReverseString(chars, iStart, iNum);
+ }
+ return iNum;
+ }
+ void FX_BidiReorder(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount, FX_INT32 iBaseLevel)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ FXSYS_assert(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
+ FX_INT32 i = 0;
+ while (i < iCount) {
+ i += FX_BidiReorderLevel(chars, iCount, iBaseLevel, i, FALSE);
+ }
+ }
+ void FX_BidiPosition(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ baseType *pTC;
+ FX_INT32 i = 0;
+ while (i < iCount) {
+ pTC = chars.GetDataPtr(i);
+ pTC = chars.GetDataPtr(pTC->m_iBidiPos);
+ pTC->m_iBidiOrder = i ++;
+ }
+ }
+
+ void FX_BidiLine(CFX_ArrayTemplate<baseType> &chars, FX_INT32 iCount, FX_INT32 iBaseLevel)
+ {
+ FXSYS_assert(iCount > -1 && iCount <= chars.GetSize());
+ if (iCount < 2) {
+ return;
+ }
+ FX_BidiClassify(chars, iCount, FALSE);
+ FX_BidiResolveExplicit(chars, iCount, iBaseLevel);
+ FX_BidiResolveWeak(chars, iCount, iBaseLevel);
+ FX_BidiResolveNeutrals(chars, iCount, iBaseLevel);
+ FX_BidiResolveImplicit(chars, iCount);
+ FX_BidiClassify(chars, iCount, TRUE);
+ FX_BidiResolveWhitespace(chars, iCount, iBaseLevel);
+ FX_BidiReorder(chars, iCount, iBaseLevel);
+ FX_BidiPosition(chars, iCount);
+ }
+};
+void FX_BidiLine(CFX_TxtCharArray &chars, FX_INT32 iCount, FX_INT32 iBaseLevel)
+{
+ CFX_BidiLineTemplate<CFX_TxtChar> blt;
+ blt.FX_BidiLine(chars, iCount, iBaseLevel);
+}
+void FX_BidiLine(CFX_RTFCharArray &chars, FX_INT32 iCount, FX_INT32 iBaseLevel)
+{
+ CFX_BidiLineTemplate<CFX_RTFChar> blt;
+ blt.FX_BidiLine(chars, iCount, iBaseLevel);
+}
IFX_BidiChar* IFX_BidiChar::Create()
{
return FX_NEW CFX_BidiChar;
diff --git a/core/src/fxcrt/fx_arabic.h b/core/src/fxcrt/fx_arabic.h
index c404449..e44bfb8 100644
--- a/core/src/fxcrt/fx_arabic.h
+++ b/core/src/fxcrt/fx_arabic.h
@@ -6,7 +6,180 @@
#ifndef _FX_ARABIC_IMP
#define _FX_ARABIC_IMP
-class CFX_BidiChar FX_FINAL : public IFX_BidiChar, public CFX_Object
+typedef struct _FX_ARABICCHARRANGE {
+ FX_WCHAR wStart;
+ FX_WCHAR wEnd;
+} FX_ARABICCHARRANGE;
+class CFX_ArabicChar : public IFX_ArabicChar, public CFX_Object
+{
+public:
+ virtual void Release()
+ {
+ delete this;
+ }
+ virtual FX_BOOL IsArabicChar(FX_WCHAR wch) const;
+ virtual FX_BOOL IsArabicFormChar(FX_WCHAR wch) const;
+
+ virtual FX_WCHAR GetFormChar(FX_WCHAR wch, FX_WCHAR prev = 0, FX_WCHAR next = 0) const;
+ virtual FX_WCHAR GetFormChar(const CFX_Char *cur, const CFX_Char *prev, const CFX_Char *next) const;
+protected:
+ FX_LPCARBFORMTABLE ParseChar(const CFX_Char *pTC, FX_WCHAR &wChar, FX_CHARTYPE &eType) const;
+};
+void FX_BidiReverseString(CFX_WideString &wsText, FX_INT32 iStart, FX_INT32 iCount);
+void FX_BidiSetDeferredRun(CFX_Int32Array &values, FX_INT32 iStart, FX_INT32 iCount, FX_INT32 iValue);
+#define FX_BCON FX_BIDICLASS_ON
+#define FX_BCL FX_BIDICLASS_L
+#define FX_BCR FX_BIDICLASS_R
+#define FX_BCAN FX_BIDICLASS_AN
+#define FX_BCEN FX_BIDICLASS_EN
+#define FX_BCAL FX_BIDICLASS_AL
+#define FX_BCNSM FX_BIDICLASS_NSM
+#define FX_BCCS FX_BIDICLASS_CS
+#define FX_BCES FX_BIDICLASS_ES
+#define FX_BCET FX_BIDICLASS_ET
+#define FX_BCBN FX_BIDICLASS_BN
+#define FX_BCS FX_BIDICLASS_S
+#define FX_BCWS FX_BIDICLASS_WS
+#define FX_BCB FX_BIDICLASS_B
+#define FX_BCRLO FX_BIDICLASS_RLO
+#define FX_BCRLE FX_BIDICLASS_RLE
+#define FX_BCLRO FX_BIDICLASS_LRO
+#define FX_BCLRE FX_BIDICLASS_LRE
+#define FX_BCPDF FX_BIDICLASS_PDF
+#define FX_BCN FX_BIDICLASS_N
+void FX_BidiClassify(const CFX_WideString &wsText, CFX_Int32Array &classes, FX_BOOL bWS = FALSE);
+#define FX_BIDIMAXLEVEL 61
+#define FX_BidiGreaterEven(a) (FX_IsOdd(a) ? ((a) + 1) : ((a) + 2))
+#define FX_BidiGreaterOdd(a) (FX_IsOdd(a) ? ((a) + 2) : ((a) + 1))
+FX_INT32 FX_BidiResolveExplicit(FX_INT32 iBaseLevel, FX_INT32 iDirection, CFX_Int32Array &classes, CFX_Int32Array &levels, FX_INT32 iStart, FX_INT32 iCount, FX_INT32 iNest = 0);
+#define FX_BidiDirection(a) (FX_IsOdd(a) ? FX_BIDICLASS_R : FX_BIDICLASS_L)
+enum FX_BIDIWEAKSTATE {
+ FX_BIDIWEAKSTATE_xa = 0,
+ FX_BIDIWEAKSTATE_xr,
+ FX_BIDIWEAKSTATE_xl,
+ FX_BIDIWEAKSTATE_ao,
+ FX_BIDIWEAKSTATE_ro,
+ FX_BIDIWEAKSTATE_lo,
+ FX_BIDIWEAKSTATE_rt,
+ FX_BIDIWEAKSTATE_lt,
+ FX_BIDIWEAKSTATE_cn,
+ FX_BIDIWEAKSTATE_ra,
+ FX_BIDIWEAKSTATE_re,
+ FX_BIDIWEAKSTATE_la,
+ FX_BIDIWEAKSTATE_le,
+ FX_BIDIWEAKSTATE_ac,
+ FX_BIDIWEAKSTATE_rc,
+ FX_BIDIWEAKSTATE_rs,
+ FX_BIDIWEAKSTATE_lc,
+ FX_BIDIWEAKSTATE_ls,
+ FX_BIDIWEAKSTATE_ret,
+ FX_BIDIWEAKSTATE_let,
+};
+#define FX_BWSxa FX_BIDIWEAKSTATE_xa
+#define FX_BWSxr FX_BIDIWEAKSTATE_xr
+#define FX_BWSxl FX_BIDIWEAKSTATE_xl
+#define FX_BWSao FX_BIDIWEAKSTATE_ao
+#define FX_BWSro FX_BIDIWEAKSTATE_ro
+#define FX_BWSlo FX_BIDIWEAKSTATE_lo
+#define FX_BWSrt FX_BIDIWEAKSTATE_rt
+#define FX_BWSlt FX_BIDIWEAKSTATE_lt
+#define FX_BWScn FX_BIDIWEAKSTATE_cn
+#define FX_BWSra FX_BIDIWEAKSTATE_ra
+#define FX_BWSre FX_BIDIWEAKSTATE_re
+#define FX_BWSla FX_BIDIWEAKSTATE_la
+#define FX_BWSle FX_BIDIWEAKSTATE_le
+#define FX_BWSac FX_BIDIWEAKSTATE_ac
+#define FX_BWSrc FX_BIDIWEAKSTATE_rc
+#define FX_BWSrs FX_BIDIWEAKSTATE_rs
+#define FX_BWSlc FX_BIDIWEAKSTATE_lc
+#define FX_BWSls FX_BIDIWEAKSTATE_ls
+#define FX_BWSret FX_BIDIWEAKSTATE_ret
+#define FX_BWSlet FX_BIDIWEAKSTATE_let
+enum FX_BIDIWEAKACTION {
+ FX_BIDIWEAKACTION_IX = 0x100,
+ FX_BIDIWEAKACTION_XX = 0x0F,
+ FX_BIDIWEAKACTION_xxx = (0x0F << 4) + 0x0F,
+ FX_BIDIWEAKACTION_xIx = 0x100 + FX_BIDIWEAKACTION_xxx,
+ FX_BIDIWEAKACTION_xxN = (0x0F << 4) + FX_BIDICLASS_ON,
+ FX_BIDIWEAKACTION_xxE = (0x0F << 4) + FX_BIDICLASS_EN,
+ FX_BIDIWEAKACTION_xxA = (0x0F << 4) + FX_BIDICLASS_AN,
+ FX_BIDIWEAKACTION_xxR = (0x0F << 4) + FX_BIDICLASS_R,
+ FX_BIDIWEAKACTION_xxL = (0x0F << 4) + FX_BIDICLASS_L,
+ FX_BIDIWEAKACTION_Nxx = (FX_BIDICLASS_ON << 4) + 0x0F,
+ FX_BIDIWEAKACTION_Axx = (FX_BIDICLASS_AN << 4) + 0x0F,
+ FX_BIDIWEAKACTION_ExE = (FX_BIDICLASS_EN << 4) + FX_BIDICLASS_EN,
+ FX_BIDIWEAKACTION_NIx = (FX_BIDICLASS_ON << 4) + 0x0F + 0x100,
+ FX_BIDIWEAKACTION_NxN = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_ON,
+ FX_BIDIWEAKACTION_NxR = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_R,
+ FX_BIDIWEAKACTION_NxE = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_EN,
+ FX_BIDIWEAKACTION_AxA = (FX_BIDICLASS_AN << 4) + FX_BIDICLASS_AN,
+ FX_BIDIWEAKACTION_NxL = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_L,
+ FX_BIDIWEAKACTION_LxL = (FX_BIDICLASS_L << 4) + FX_BIDICLASS_L,
+ FX_BIDIWEAKACTION_xIL = (0x0F << 4) + FX_BIDICLASS_L + 0x100,
+ FX_BIDIWEAKACTION_AxR = (FX_BIDICLASS_AN << 4) + FX_BIDICLASS_R,
+ FX_BIDIWEAKACTION_Lxx = (FX_BIDICLASS_L << 4) + 0x0F,
+};
+#define FX_BWAIX FX_BIDIWEAKACTION_IX
+#define FX_BWAXX FX_BIDIWEAKACTION_XX
+#define FX_BWAxxx FX_BIDIWEAKACTION_xxx
+#define FX_BWAxIx FX_BIDIWEAKACTION_xIx
+#define FX_BWAxxN FX_BIDIWEAKACTION_xxN
+#define FX_BWAxxE FX_BIDIWEAKACTION_xxE
+#define FX_BWAxxA FX_BIDIWEAKACTION_xxA
+#define FX_BWAxxR FX_BIDIWEAKACTION_xxR
+#define FX_BWAxxL FX_BIDIWEAKACTION_xxL
+#define FX_BWANxx FX_BIDIWEAKACTION_Nxx
+#define FX_BWAAxx FX_BIDIWEAKACTION_Axx
+#define FX_BWAExE FX_BIDIWEAKACTION_ExE
+#define FX_BWANIx FX_BIDIWEAKACTION_NIx
+#define FX_BWANxN FX_BIDIWEAKACTION_NxN
+#define FX_BWANxR FX_BIDIWEAKACTION_NxR
+#define FX_BWANxE FX_BIDIWEAKACTION_NxE
+#define FX_BWAAxA FX_BIDIWEAKACTION_AxA
+#define FX_BWANxL FX_BIDIWEAKACTION_NxL
+#define FX_BWALxL FX_BIDIWEAKACTION_LxL
+#define FX_BWAxIL FX_BIDIWEAKACTION_xIL
+#define FX_BWAAxR FX_BIDIWEAKACTION_AxR
+#define FX_BWALxx FX_BIDIWEAKACTION_Lxx
+#define FX_BidiGetDeferredType(a) (((a) >> 4) & 0x0F)
+#define FX_BidiGetResolvedType(a) ((a) & 0x0F)
+void FX_BidiResolveWeak(FX_INT32 iBaseLevel, CFX_Int32Array &classes, CFX_Int32Array &levels);
+enum FX_BIDINEUTRALSTATE {
+ FX_BIDINEUTRALSTATE_r = 0,
+ FX_BIDINEUTRALSTATE_l,
+ FX_BIDINEUTRALSTATE_rn,
+ FX_BIDINEUTRALSTATE_ln,
+ FX_BIDINEUTRALSTATE_a,
+ FX_BIDINEUTRALSTATE_na,
+};
+#define FX_BNSr FX_BIDINEUTRALSTATE_r
+#define FX_BNSl FX_BIDINEUTRALSTATE_l
+#define FX_BNSrn FX_BIDINEUTRALSTATE_rn
+#define FX_BNSln FX_BIDINEUTRALSTATE_ln
+#define FX_BNSa FX_BIDINEUTRALSTATE_a
+#define FX_BNSna FX_BIDINEUTRALSTATE_na
+enum FX_BIDINEUTRALACTION {
+ FX_BIDINEUTRALACTION_nL = FX_BIDICLASS_L,
+ FX_BIDINEUTRALACTION_En = (FX_BIDICLASS_AN << 4),
+ FX_BIDINEUTRALACTION_Rn = (FX_BIDICLASS_R << 4),
+ FX_BIDINEUTRALACTION_Ln = (FX_BIDICLASS_L << 4),
+ FX_BIDINEUTRALACTION_In = FX_BIDIWEAKACTION_IX,
+ FX_BIDINEUTRALACTION_LnL = (FX_BIDICLASS_L << 4) + FX_BIDICLASS_L,
+};
+#define FX_BNAnL FX_BIDINEUTRALACTION_nL
+#define FX_BNAEn FX_BIDINEUTRALACTION_En
+#define FX_BNARn FX_BIDINEUTRALACTION_Rn
+#define FX_BNALn FX_BIDINEUTRALACTION_Ln
+#define FX_BNAIn FX_BIDINEUTRALACTION_In
+#define FX_BNALnL FX_BIDINEUTRALACTION_LnL
+FX_INT32 FX_BidiGetDeferredNeutrals(FX_INT32 iAction, FX_INT32 iLevel);
+FX_INT32 FX_BidiGetResolvedNeutrals(FX_INT32 iAction);
+void FX_BidiResolveNeutrals(FX_INT32 iBaseLevel, CFX_Int32Array &classes, const CFX_Int32Array &levels);
+void FX_BidiResolveImplicit(const CFX_Int32Array &classes, CFX_Int32Array &levels);
+void FX_BidiResolveWhitespace(FX_INT32 iBaseLevel, const CFX_Int32Array &classes, CFX_Int32Array &levels);
+FX_INT32 FX_BidiReorderLevel(FX_INT32 iBaseLevel, CFX_WideString &wsText, const CFX_Int32Array &levels, FX_INT32 iStart, FX_BOOL bReverse = FALSE);
+void FX_BidiReorder(FX_INT32 iBaseLevel, CFX_WideString &wsText, const CFX_Int32Array &levels);
+class CFX_BidiChar : public IFX_BidiChar, public CFX_Object
{
public:
CFX_BidiChar();
diff --git a/core/src/fxcrt/fx_extension.cpp b/core/src/fxcrt/fx_extension.cpp
index 7ff6b06..330c675 100644
--- a/core/src/fxcrt/fx_extension.cpp
+++ b/core/src/fxcrt/fx_extension.cpp
@@ -80,6 +80,18 @@
FXSYS_assert(hFile != NULL);
return ((IFXCRT_FileAccess*)hFile)->Truncate(szFile);
}
+IFX_FileAccess* FX_CreateDefaultFileAccess(FX_WSTR wsPath)
+{
+ if (wsPath.GetLength() == 0)
+ return NULL;
+
+ CFX_CRTFileAccess* pFA = NULL;
+ pFA = FX_NEW CFX_CRTFileAccess;
+ if (NULL == pFA) return NULL;
+
+ pFA->Init(wsPath);
+ return pFA;
+}
IFX_FileStream* FX_CreateFileStream(FX_LPCSTR filename, FX_DWORD dwModes)
{
IFXCRT_FileAccess* pFA = FXCRT_FileAccess_Create();
@@ -383,3 +395,40 @@
#ifdef __cplusplus
}
#endif
+#ifdef __cplusplus
+extern "C" {
+#endif
+void FX_GUID_CreateV4(FX_LPGUID pGUID)
+{
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN32_MOBILE_ || _FX_OS_ == _FX_WIN64_)
+#ifdef _FX_WINAPI_PARTITION_DESKTOP_
+ if (!FX_GenerateCryptoRandom((FX_LPDWORD)pGUID, 4)) {
+ FX_Random_GenerateMT((FX_LPDWORD)pGUID, 4);
+ }
+#else
+ FX_Random_GenerateMT((FX_LPDWORD)pGUID, 4);
+#endif
+#else
+ FX_Random_GenerateMT((FX_LPDWORD)pGUID, 4);
+#endif
+ FX_BYTE &b = ((FX_LPBYTE)pGUID)[6];
+ b = (b & 0x0F) | 0x40;
+}
+FX_LPCSTR gs_FX_pHexChars = "0123456789ABCDEF";
+void FX_GUID_ToString(FX_LPCGUID pGUID, CFX_ByteString &bsStr, FX_BOOL bSeparator)
+{
+ FX_LPSTR pBuf = bsStr.GetBuffer(40);
+ FX_BYTE b;
+ for (FX_INT32 i = 0; i < 16; i ++) {
+ b = ((FX_LPCBYTE)pGUID)[i];
+ *pBuf ++ = gs_FX_pHexChars[b >> 4];
+ *pBuf ++ = gs_FX_pHexChars[b & 0x0F];
+ if (bSeparator && (i == 3 || i == 5 || i == 7 || i == 9)) {
+ *pBuf ++ = L'-';
+ }
+ }
+ bsStr.ReleaseBuffer(bSeparator ? 36 : 32);
+}
+#ifdef __cplusplus
+}
+#endif
diff --git a/core/src/fxcrt/fx_xml_parser.cpp b/core/src/fxcrt/fx_xml_parser.cpp
index 05fc7d5..bd418b2 100644
--- a/core/src/fxcrt/fx_xml_parser.cpp
+++ b/core/src/fxcrt/fx_xml_parser.cpp
@@ -672,7 +672,7 @@
FX_XML_SplitQualifiedName(name, bsSpace, bsName);
const CFX_WideString* pValue = m_AttrMap.Lookup(bsSpace, bsName);
if (pValue) {
- attribute = CFX_WideString((FX_LPCWSTR)pValue, pValue->GetLength());
+ attribute = CFX_WideString((FX_LPCWSTR)*pValue, pValue->GetLength());
return TRUE;
}
return FALSE;
@@ -681,7 +681,7 @@
{
const CFX_WideString* pValue = m_AttrMap.Lookup(space, name);
if (pValue) {
- attribute = CFX_WideString((FX_LPCWSTR)pValue, pValue->GetLength());
+ attribute = CFX_WideString((FX_LPCWSTR)*pValue, pValue->GetLength());
return TRUE;
}
return FALSE;
diff --git a/core/src/fxge/ge/fx_ge_font.cpp b/core/src/fxge/ge/fx_ge_font.cpp
index 817f371..e3c68e0 100644
--- a/core/src/fxge/ge/fx_ge_font.cpp
+++ b/core/src/fxge/ge/fx_ge_font.cpp
@@ -25,6 +25,52 @@
m_pDwFont = NULL;
m_hHandle = NULL;
m_bDwLoaded = FALSE;
+ m_bLogic = FALSE;
+}
+FX_BOOL CFX_Font::LoadClone(const CFX_Font* pFont)
+{
+ if (pFont == NULL) {
+ return FALSE;
+ }
+ m_bLogic = TRUE;
+ if (pFont->m_pSubstFont) {
+ m_pSubstFont = FX_NEW CFX_SubstFont;
+ if (!m_pSubstFont) {
+ return FALSE;
+ }
+ m_pSubstFont->m_Charset = pFont->m_pSubstFont->m_Charset;
+ m_pSubstFont->m_ExtHandle = pFont->m_pSubstFont->m_ExtHandle;
+ m_pSubstFont->m_SubstFlags = pFont->m_pSubstFont->m_SubstFlags;
+ m_pSubstFont->m_Weight = pFont->m_pSubstFont->m_Weight;
+ m_pSubstFont->m_Family = pFont->m_pSubstFont->m_Family;
+ m_pSubstFont->m_ItalicAngle = pFont->m_pSubstFont->m_ItalicAngle;
+ }
+ if (pFont->m_OtfFontData.GetSize()) {
+ m_OtfFontData.AttachData(pFont->m_OtfFontData.GetBuffer(), pFont->m_OtfFontData.GetSize());
+ }
+ m_Face = pFont->m_Face;
+ m_bEmbedded = pFont->m_bEmbedded;
+ m_bVertical = pFont->m_bVertical;
+ m_dwSize = pFont->m_dwSize;
+ m_pFontData = pFont->m_pFontData;
+ m_pGsubData = pFont->m_pGsubData;
+#ifdef FOXIT_CHROME_BUILD
+ if (pFont->m_pFontDataAllocation) {
+ m_pFontDataAllocation = FX_Alloc(FX_BYTE, m_dwSize);
+ if (!m_pFontDataAllocation) {
+ return FALSE;
+ }
+ m_pFontData = m_pFontDataAllocation;
+ FXSYS_memcpy32(m_pFontDataAllocation, pFont->m_pFontDataAllocation, m_dwSize);
+ }
+#endif
+ m_pPlatformFont = pFont->m_pPlatformFont;
+ m_pPlatformFontCollection = pFont->m_pPlatformFontCollection;
+ m_pDwFont = pFont->m_pDwFont;
+ m_hHandle = pFont->m_hHandle;
+ m_bDwLoaded = pFont->m_bDwLoaded;
+ m_pOwnedStream = pFont->m_pOwnedStream;
+ return TRUE;
}
CFX_Font::~CFX_Font()
{
@@ -38,6 +84,10 @@
m_pFontDataAllocation = NULL;
}
#endif
+ if (m_bLogic) {
+ m_OtfFontData.DetachBuffer();
+ return;
+ }
if (m_Face) {
#ifdef FOXIT_CHROME_BUILD
if (FXFT_Get_Face_External_Stream(m_Face)) {
@@ -108,7 +158,7 @@
{
}
};
-FX_BOOL _LoadFile(FXFT_Library library, FXFT_Face* Face, IFX_FileRead* pFile, FXFT_Stream* stream)
+FX_BOOL _LoadFile(FXFT_Library library, FXFT_Face* Face, IFX_FileRead* pFile, FXFT_Stream* stream, FX_INT32 faceIndex = 0)
{
FXFT_Stream stream1 = (FXFT_Stream)FX_Alloc(FX_BYTE, sizeof (FXFT_StreamRec));
if (!stream1) {
@@ -123,7 +173,7 @@
FXFT_Open_Args args;
args.flags = FT_OPEN_STREAM;
args.stream = stream1;
- if (FXFT_Open_Face(library, &args, 0, Face)) {
+ if (FXFT_Open_Face(library, &args, faceIndex, Face)) {
FX_Free(stream1);
return FALSE;
}
@@ -132,19 +182,21 @@
}
return TRUE;
}
-FX_BOOL CFX_Font::LoadFile(IFX_FileRead* pFile)
+FX_BOOL CFX_Font::LoadFile(IFX_FileRead* pFile, int nFaceIndex, int* pFaceCount)
{
m_bEmbedded = FALSE;
FXFT_Library library;
- if (CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary == NULL) {
+ if (CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary == NULL)
FXFT_Init_FreeType(&CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary);
- }
library = CFX_GEModule::Get()->GetFontMgr()->m_FTLibrary;
FXFT_Stream stream = NULL;
- if (!_LoadFile(library, &m_Face, pFile, &stream)) {
+ if (!_LoadFile(library, &m_Face, pFile, &stream, nFaceIndex))
return FALSE;
- }
+ if (pFaceCount)
+ *pFaceCount = (int)m_Face->num_faces;
+#ifndef FOXIT_CHROME_BUILD
m_pOwnedStream = stream;
+#endif
FXFT_Set_Pixel_Sizes(m_Face, 0, 64);
return TRUE;
}
@@ -455,3 +507,168 @@
pEncoding = FX_NEW CFX_UnicodeEncoding(pFont);
return pEncoding;
}
+CFX_FontEncodingEX::CFX_FontEncodingEX()
+{
+ m_pFont = NULL;
+ m_nEncodingID = FXFM_ENCODING_NONE;
+}
+FX_BOOL CFX_FontEncodingEX::Init(CFX_Font* pFont, FX_DWORD EncodingID)
+{
+ if (!pFont) {
+ return FALSE;
+ }
+ m_pFont = pFont;
+ m_nEncodingID = EncodingID;
+ return TRUE;
+}
+FX_DWORD CFX_FontEncodingEX::GlyphFromCharCode(FX_DWORD charcode)
+{
+ FXFT_Face face = m_pFont->m_Face;
+ FT_UInt nIndex = FXFT_Get_Char_Index(face, charcode);
+ if (nIndex > 0) {
+ return nIndex;
+ }
+ int nmaps = FXFT_Get_Face_CharmapCount(face);
+ int m = 0;
+ while (m < nmaps) {
+ int nEncodingID = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[m++]);
+ if (m_nEncodingID == nEncodingID) {
+ continue;
+ }
+ int error = FXFT_Select_Charmap(face, nEncodingID);
+ if (error) {
+ continue;
+ }
+ nIndex = FXFT_Get_Char_Index(face, charcode);
+ if (nIndex > 0) {
+ m_nEncodingID = nEncodingID;
+ return nIndex;
+ }
+ }
+ FXFT_Select_Charmap(face, m_nEncodingID);
+ return 0;
+}
+CFX_WideString CFX_FontEncodingEX::UnicodeFromCharCode(FX_DWORD charcode) const
+{
+ if (m_nEncodingID == FXFM_ENCODING_UNICODE) {
+ return CFX_WideString((FX_WCHAR)charcode);
+ }
+ return CFX_WideString((FX_WCHAR)0);
+}
+FX_DWORD CFX_FontEncodingEX::CharCodeFromUnicode(FX_WCHAR Unicode) const
+{
+ if (m_nEncodingID == FXFM_ENCODING_UNICODE || m_nEncodingID == FXFM_ENCODING_MS_SYMBOL) {
+ return Unicode;
+ }
+ FXFT_Face face = m_pFont->m_Face;
+ int nmaps = FXFT_Get_Face_CharmapCount(face);
+ for (int i = 0; i < nmaps; i++) {
+ int nEncodingID = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i]);
+ if (nEncodingID == FXFM_ENCODING_UNICODE || nEncodingID == FXFM_ENCODING_MS_SYMBOL) {
+ return Unicode;
+ }
+ }
+ return -1;
+}
+FX_BOOL CFX_FontEncodingEX::IsUnicodeCompatible() const
+{
+ return m_nEncodingID == FXFM_ENCODING_UNICODE;
+}
+FX_DWORD CFX_FontEncodingEX::GlyphIndexFromName(FX_LPCSTR pStrName)
+{
+ FXFT_Face face = m_pFont->m_Face;
+ return FT_Get_Name_Index(face, (FT_String*)pStrName);
+}
+CFX_ByteString CFX_FontEncodingEX::NameFromGlyphIndex(FX_DWORD dwGlyphIndex)
+{
+ FXFT_Face face = m_pFont->m_Face;
+ CFX_ByteString glyphName(" ");
+ if (FT_HAS_GLYPH_NAMES(((FT_Face)face))) {
+ if (FT_Get_Glyph_Name((FT_Face)face, dwGlyphIndex, (FT_Pointer)(FX_LPCSTR)glyphName, 16)) {
+ glyphName.Empty();
+ return glyphName;
+ }
+ return glyphName;
+ } else {
+ return glyphName;
+ }
+}
+FX_DWORD CFX_FontEncodingEX::CharCodeFromGlyphIndex(FX_DWORD dwGlyphIndex)
+{
+ FXFT_Face face = m_pFont->GetFace();
+ FX_DWORD charcode;
+ FT_UInt gid;
+ charcode = FT_Get_First_Char((FT_Face)face, &gid);
+ while (gid != 0) {
+ if (dwGlyphIndex == gid) {
+ return charcode;
+ }
+ charcode = FT_Get_Next_Char((FT_Face)face, charcode, &gid);
+ }
+ int nmaps = FXFT_Get_Face_CharmapCount(face);
+ int m = 0;
+ while (m < nmaps) {
+ int nEncodingID = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[m++]);
+ if (m_nEncodingID == nEncodingID) {
+ continue;
+ }
+ int error = FXFT_Select_Charmap(face, nEncodingID);
+ if (error) {
+ continue;
+ }
+ charcode = FT_Get_First_Char((FT_Face)face, &gid);
+ while (gid != 0) {
+ if (dwGlyphIndex == gid) {
+ m_nEncodingID = nEncodingID;
+ return charcode;
+ }
+ charcode = FT_Get_Next_Char((FT_Face)face, charcode, &gid);
+ }
+ }
+ return (FX_DWORD) - 1;
+}
+static const FX_DWORD gs_EncodingID[] = {
+ FXFM_ENCODING_MS_SYMBOL,
+ FXFM_ENCODING_UNICODE,
+ FXFM_ENCODING_MS_SJIS,
+ FXFM_ENCODING_MS_GB2312,
+ FXFM_ENCODING_MS_BIG5,
+ FXFM_ENCODING_MS_WANSUNG,
+ FXFM_ENCODING_MS_JOHAB,
+ FXFM_ENCODING_ADOBE_STANDARD,
+ FXFM_ENCODING_ADOBE_EXPERT,
+ FXFM_ENCODING_ADOBE_CUSTOM,
+ FXFM_ENCODING_ADOBE_LATIN_1,
+ FXFM_ENCODING_OLD_LATIN_2,
+ FXFM_ENCODING_APPLE_ROMAN
+};
+static IFX_FontEncodingEx* _FXFM_CreateFontEncoding(CFX_Font* pFont, FX_DWORD nEncodingID)
+{
+ int error = FXFT_Select_Charmap(pFont->m_Face, nEncodingID);
+ if (error) {
+ return NULL;
+ }
+ CFX_FontEncodingEX* pFontEncoding = FX_NEW CFX_FontEncodingEX;
+ if (pFontEncoding && !pFontEncoding->Init(pFont, nEncodingID)) {
+ delete pFontEncoding;
+ pFontEncoding = NULL;
+ }
+ return pFontEncoding;
+}
+IFX_FontEncodingEx* FX_CreateFontEncodingEx(CFX_Font* pFont, FX_DWORD nEncodingID)
+{
+ if (!pFont || !pFont->m_Face) {
+ return NULL;
+ }
+ if (nEncodingID != FXFM_ENCODING_NONE) {
+ return _FXFM_CreateFontEncoding(pFont, nEncodingID);
+ }
+ static int s_count = sizeof(gs_EncodingID) / sizeof(FX_DWORD);
+ for (int i = 0; i < s_count; i++) {
+ IFX_FontEncodingEx* pFontEncoding = _FXFM_CreateFontEncoding(pFont, gs_EncodingID[i]);
+ if (pFontEncoding) {
+ return pFontEncoding;
+ }
+ }
+ return NULL;
+}
diff --git a/core/src/fxge/ge/fx_ge_fontmap.cpp b/core/src/fxge/ge/fx_ge_fontmap.cpp
index a5fa644..fe790d8 100644
--- a/core/src/fxge/ge/fx_ge_fontmap.cpp
+++ b/core/src/fxge/ge/fx_ge_fontmap.cpp
@@ -1156,6 +1156,9 @@
pSubstFont->m_SubstFlags |= FXFONT_SUBST_EXACT;
}
if (hFont == NULL) {
+ if (flags & FXFONT_EXACTMATCH) {
+ return NULL;
+ }
if (bCJK) {
if (italic_angle != 0) {
bItalic = TRUE;
@@ -1284,6 +1287,68 @@
m_pFontInfo->DeleteFont(hFont);
return face;
}
+FXFT_Face CFX_FontMapper::FindSubstFontByUnicode(FX_DWORD dwUnicode, FX_DWORD flags, int weight, int italic_angle)
+{
+ if (m_pFontInfo == NULL) {
+ return NULL;
+ }
+ FX_BOOL bItalic = (flags & FXFONT_ITALIC) != 0;
+ int PitchFamily = 0;
+ if (flags & FXFONT_SERIF) {
+ PitchFamily |= FXFONT_FF_ROMAN;
+ }
+ if (flags & FXFONT_SCRIPT) {
+ PitchFamily |= FXFONT_FF_SCRIPT;
+ }
+ if (flags & FXFONT_FIXED_PITCH) {
+ PitchFamily |= FXFONT_FF_FIXEDPITCH;
+ }
+ void* hFont = m_pFontInfo->MapFontByUnicode(dwUnicode, weight, bItalic, PitchFamily);
+ if (hFont == NULL) {
+ return NULL;
+ }
+ FX_DWORD ttc_size = m_pFontInfo->GetFontData(hFont, 0x74746366, NULL, 0);
+ FX_DWORD font_size = m_pFontInfo->GetFontData(hFont, 0, NULL, 0);
+ if(font_size == 0 && ttc_size == 0) {
+ m_pFontInfo->DeleteFont(hFont);
+ return NULL;
+ }
+ FXFT_Face face = NULL;
+ if (ttc_size) {
+ FX_BYTE temp[1024];
+ m_pFontInfo->GetFontData(hFont, 0x74746366, temp, 1024);
+ FX_DWORD checksum = 0;
+ for (int i = 0; i < 256; i ++) {
+ checksum += ((FX_DWORD*)temp)[i];
+ }
+ FX_LPBYTE pFontData;
+ face = m_pFontMgr->GetCachedTTCFace(ttc_size, checksum, ttc_size - font_size, pFontData);
+ if (face == NULL) {
+ pFontData = FX_Alloc(FX_BYTE, ttc_size);
+ if (pFontData) {
+ m_pFontInfo->GetFontData(hFont, 0x74746366, pFontData, ttc_size);
+ face = m_pFontMgr->AddCachedTTCFace(ttc_size, checksum, pFontData, ttc_size,
+ ttc_size - font_size);
+ }
+ }
+ } else {
+ CFX_ByteString SubstName;
+ m_pFontInfo->GetFaceName(hFont, SubstName);
+ FX_LPBYTE pFontData;
+ face = m_pFontMgr->GetCachedFace(SubstName, weight, bItalic, pFontData);
+ if (face == NULL) {
+ pFontData = FX_Alloc(FX_BYTE, font_size);
+ if (!pFontData) {
+ m_pFontInfo->DeleteFont(hFont);
+ return NULL;
+ }
+ m_pFontInfo->GetFontData(hFont, 0, pFontData, font_size);
+ face = m_pFontMgr->AddCachedFace(SubstName, weight, bItalic, pFontData, font_size, m_pFontInfo->GetFaceIndex(hFont));
+ }
+ }
+ m_pFontInfo->DeleteFont(hFont);
+ return face;
+}
extern "C" {
unsigned long _FTStreamRead(FXFT_Stream stream, unsigned long offset,
unsigned char* buffer, unsigned long count);
@@ -1483,6 +1548,10 @@
{
return NULL;
}
+void* CFX_FolderFontInfo::MapFontByUnicode(FX_DWORD dwUnicode, int weight, FX_BOOL bItalic, int pitch_family)
+{
+ return NULL;
+}
void* CFX_FolderFontInfo::GetFont(FX_LPCSTR face)
{
FX_LPVOID p;
diff --git a/core/src/fxge/ge/text_int.h b/core/src/fxge/ge/text_int.h
index c8d5596..e51976f 100644
--- a/core/src/fxge/ge/text_int.h
+++ b/core/src/fxge/ge/text_int.h
@@ -101,5 +101,24 @@
int m_PitchFamily;
CFX_ByteString m_FontTables;
};
-
+class CFX_FontEncodingEX : public IFX_FontEncodingEx
+{
+public:
+ CFX_FontEncodingEX();
+ FX_BOOL Init(CFX_Font* pFont, FX_DWORD EncodingID);
+ virtual FX_DWORD GlyphIndexFromName(FX_LPCSTR pStrName);
+ virtual CFX_ByteString NameFromGlyphIndex(FX_DWORD dwGlyphIndex);
+ virtual FX_DWORD CharCodeFromGlyphIndex(FX_DWORD dwGlyphIndex);
+ virtual FX_DWORD GlyphFromCharCode(FX_DWORD charcode);
+ virtual CFX_WideString UnicodeFromCharCode(FX_DWORD charcode) const;
+ virtual FX_DWORD CharCodeFromUnicode(FX_WCHAR Unicode) const;
+ virtual FX_BOOL IsUnicodeCompatible() const;
+ virtual FX_DWORD GlyphFromCharCodeEx(FX_DWORD charcode, int encoding = ENCODING_UNICODE)
+ {
+ return GlyphFromCharCode(charcode);
+ }
+private:
+ CFX_Font* m_pFont;
+ FX_DWORD m_nEncodingID;
+};
#endif // _TEXT_INT_H_
