Move core/src/ up to core/.
This CL moves the core/src/ files up to core/ and fixes up the include guards,
includes and build files.
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/1800523005 .
diff --git a/core/fxcodec/codec/DEPS b/core/fxcodec/codec/DEPS
new file mode 100644
index 0000000..495d288
--- /dev/null
+++ b/core/fxcodec/codec/DEPS
@@ -0,0 +1,4 @@
+include_rules = [
+ '+third_party/libpng16/png.h',
+ '+third_party/libtiff/tiffiop.h',
+]
diff --git a/core/fxcodec/codec/codec_int.h b/core/fxcodec/codec/codec_int.h
new file mode 100644
index 0000000..d2f44dd
--- /dev/null
+++ b/core/fxcodec/codec/codec_int.h
@@ -0,0 +1,428 @@
+// 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 CORE_FXCODEC_CODEC_CODEC_INT_H_
+#define CORE_FXCODEC_CODEC_CODEC_INT_H_
+
+#include <limits.h>
+
+#include <list>
+#include <map>
+#include <memory>
+#include <vector>
+
+#include "core/fxcodec/jbig2/JBig2_Context.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "third_party/libopenjpeg20/openjpeg.h" // For OPJ_SIZE_T.
+
+class CFX_IccProfileCache;
+class CFX_IccTransformCache;
+class CPDF_ColorSpace;
+
+class CCodec_BasicModule : public ICodec_BasicModule {
+ public:
+ // ICodec_BasicModule:
+ FX_BOOL RunLengthEncode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) override;
+ FX_BOOL A85Encode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) override;
+ ICodec_ScanlineDecoder* CreateRunLengthDecoder(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc) override;
+};
+
+class CCodec_ScanlineDecoder : public ICodec_ScanlineDecoder {
+ public:
+ CCodec_ScanlineDecoder();
+ ~CCodec_ScanlineDecoder() override;
+
+ // ICodec_ScanlineDecoder
+ FX_DWORD GetSrcOffset() override { return -1; }
+ void DownScale(int dest_width, int dest_height) override;
+ const uint8_t* GetScanline(int line) override;
+ FX_BOOL SkipToScanline(int line, IFX_Pause* pPause) override;
+ int GetWidth() override { return m_OutputWidth; }
+ int GetHeight() override { return m_OutputHeight; }
+ int CountComps() override { return m_nComps; }
+ int GetBPC() override { return m_bpc; }
+ FX_BOOL IsColorTransformed() override { return m_bColorTransformed; }
+ void ClearImageData() override { m_pDataCache.reset(); }
+
+ protected:
+ class ImageDataCache {
+ public:
+ ImageDataCache(int width, int height, FX_DWORD pitch);
+ ~ImageDataCache();
+
+ bool AllocateCache();
+ void AppendLine(const uint8_t* line);
+
+ int NumLines() const { return m_nCachedLines; }
+ const uint8_t* GetLine(int line) const;
+ bool IsSameDimensions(int width, int height) const {
+ return width == m_Width && height == m_Height;
+ }
+
+ private:
+ bool IsValid() const { return m_Data.get() != nullptr; }
+
+ const int m_Width;
+ const int m_Height;
+ const FX_DWORD m_Pitch;
+ int m_nCachedLines;
+ std::unique_ptr<uint8_t, FxFreeDeleter> m_Data;
+ };
+
+ virtual FX_BOOL v_Rewind() = 0;
+ virtual uint8_t* v_GetNextLine() = 0;
+ virtual void v_DownScale(int dest_width, int dest_height) = 0;
+
+ uint8_t* ReadNextLine();
+
+ int m_OrigWidth;
+ int m_OrigHeight;
+ int m_DownScale;
+ int m_OutputWidth;
+ int m_OutputHeight;
+ int m_nComps;
+ int m_bpc;
+ FX_DWORD m_Pitch;
+ FX_BOOL m_bColorTransformed;
+ int m_NextLine;
+ uint8_t* m_pLastScanline;
+ std::unique_ptr<ImageDataCache> m_pDataCache;
+};
+
+class CCodec_FaxModule : public ICodec_FaxModule {
+ public:
+ // ICodec_FaxModule:
+ ICodec_ScanlineDecoder* CreateDecoder(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int K,
+ FX_BOOL EndOfLine,
+ FX_BOOL EncodedByteAlign,
+ FX_BOOL BlackIs1,
+ int Columns,
+ int Rows) override;
+ FX_BOOL Encode(const uint8_t* src_buf,
+ int width,
+ int height,
+ int pitch,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) override;
+};
+
+class CCodec_FlateModule : public ICodec_FlateModule {
+ public:
+ virtual ICodec_ScanlineDecoder* CreateDecoder(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns);
+ virtual FX_DWORD FlateOrLZWDecode(FX_BOOL bLZW,
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ FX_BOOL bEarlyChange,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns,
+ FX_DWORD estimated_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size);
+ virtual FX_BOOL Encode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size);
+ virtual FX_BOOL Encode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size);
+};
+
+class CCodec_JpegModule : public ICodec_JpegModule {
+ public:
+ CCodec_JpegModule() {}
+ ICodec_ScanlineDecoder* CreateDecoder(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ FX_BOOL ColorTransform) override;
+ FX_BOOL LoadInfo(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int& width,
+ int& height,
+ int& num_components,
+ int& bits_per_components,
+ FX_BOOL& color_transform,
+ uint8_t** icc_buf_ptr,
+ FX_DWORD* icc_length) override;
+ FX_BOOL Encode(const CFX_DIBSource* pSource,
+ uint8_t*& dest_buf,
+ FX_STRSIZE& dest_size,
+ int quality,
+ const uint8_t* icc_buf,
+ FX_DWORD icc_length) override;
+ void* Start() override;
+ void Finish(void* pContext) override;
+ void Input(void* pContext,
+ const uint8_t* src_buf,
+ FX_DWORD src_size) override;
+#ifndef PDF_ENABLE_XFA
+ int ReadHeader(void* pContext, int* width, int* height, int* nComps) override;
+#else // PDF_ENABLE_XFA
+ int ReadHeader(void* pContext,
+ int* width,
+ int* height,
+ int* nComps,
+ CFX_DIBAttribute* pAttribute) override;
+#endif // PDF_ENABLE_XFA
+ int StartScanline(void* pContext, int down_scale) override;
+ FX_BOOL ReadScanline(void* pContext, uint8_t* dest_buf) override;
+ FX_DWORD GetAvailInput(void* pContext, uint8_t** avail_buf_ptr) override;
+};
+
+#ifdef PDF_ENABLE_XFA
+#define PNG_ERROR_SIZE 256
+class CCodec_PngModule : public ICodec_PngModule {
+ public:
+ CCodec_PngModule() { FXSYS_memset(m_szLastError, '\0', PNG_ERROR_SIZE); }
+
+ virtual void* Start(void* pModule);
+ virtual void Finish(void* pContext);
+ virtual FX_BOOL Input(void* pContext,
+ const uint8_t* 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_memset(m_szLastError, '\0', 256); }
+ virtual void* Start(void* pModule);
+ virtual void Finish(void* pContext);
+ virtual FX_DWORD GetAvailInput(void* pContext, uint8_t** avail_buf_ptr);
+ virtual void Input(void* pContext, const uint8_t* src_buf, FX_DWORD src_size);
+
+ virtual int32_t ReadHeader(void* pContext,
+ int* width,
+ int* height,
+ int* pal_num,
+ void** pal_pp,
+ int* bg_index,
+ CFX_DIBAttribute* pAttribute);
+
+ virtual int32_t LoadFrameInfo(void* pContext, int* frame_num);
+
+ virtual int32_t 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_memset(m_szLastError, 0, sizeof(m_szLastError)); }
+ void* Start(void* pModule) override;
+ void Finish(void* pContext) override;
+ FX_DWORD GetAvailInput(void* pContext, uint8_t** avail_buf_ptr) override;
+ void Input(void* pContext,
+ const uint8_t* src_buf,
+ FX_DWORD src_size) override;
+ int32_t ReadHeader(void* pContext,
+ int32_t* width,
+ int32_t* height,
+ FX_BOOL* tb_flag,
+ int32_t* components,
+ int32_t* pal_num,
+ FX_DWORD** pal_pp,
+ CFX_DIBAttribute* pAttribute) override;
+ int32_t LoadImage(void* pContext) override;
+
+ protected:
+ FX_CHAR m_szLastError[256];
+};
+#endif // PDF_ENABLE_XFA
+
+class CCodec_IccModule : public ICodec_IccModule {
+ public:
+ ~CCodec_IccModule() override;
+
+ // ICodec_IccModule:
+ IccCS GetProfileCS(const uint8_t* pProfileData,
+ unsigned int dwProfileSize) override;
+ IccCS GetProfileCS(IFX_FileRead* pFile) override;
+ void* CreateTransform(ICodec_IccModule::IccParam* pInputParam,
+ ICodec_IccModule::IccParam* pOutputParam,
+ ICodec_IccModule::IccParam* pProofParam = NULL,
+ FX_DWORD dwIntent = Icc_INTENT_PERCEPTUAL,
+ FX_DWORD dwFlag = Icc_FLAGS_DEFAULT,
+ FX_DWORD dwPrfIntent = Icc_INTENT_ABSOLUTE_COLORIMETRIC,
+ FX_DWORD dwPrfFlag = Icc_FLAGS_SOFTPROOFING) override;
+ void* CreateTransform_sRGB(
+ const uint8_t* pProfileData,
+ FX_DWORD dwProfileSize,
+ FX_DWORD& nComponents,
+ int32_t intent = 0,
+ FX_DWORD dwSrcFormat = Icc_FORMAT_DEFAULT) override;
+ void* CreateTransform_CMYK(
+ const uint8_t* pSrcProfileData,
+ FX_DWORD dwSrcProfileSize,
+ FX_DWORD& nSrcComponents,
+ const uint8_t* pDstProfileData,
+ FX_DWORD dwDstProfileSize,
+ int32_t intent = 0,
+ FX_DWORD dwSrcFormat = Icc_FORMAT_DEFAULT,
+ FX_DWORD dwDstFormat = Icc_FORMAT_DEFAULT) override;
+ void DestroyTransform(void* pTransform) override;
+ void Translate(void* pTransform,
+ FX_FLOAT* pSrcValues,
+ FX_FLOAT* pDestValues) override;
+ void TranslateScanline(void* pTransform,
+ uint8_t* pDest,
+ const uint8_t* pSrc,
+ int pixels) override;
+ void SetComponents(FX_DWORD nComponents) override {
+ m_nComponents = nComponents;
+ }
+
+ protected:
+ enum Icc_CLASS {
+ Icc_CLASS_INPUT = 0,
+ Icc_CLASS_OUTPUT,
+ Icc_CLASS_PROOF,
+ Icc_CLASS_MAX
+ };
+ void* CreateProfile(ICodec_IccModule::IccParam* pIccParam,
+ Icc_CLASS ic,
+ CFX_BinaryBuf* pTransformKey);
+
+ FX_DWORD m_nComponents;
+ std::map<CFX_ByteString, CFX_IccTransformCache*> m_MapTranform;
+ std::map<CFX_ByteString, CFX_IccProfileCache*> m_MapProfile;
+};
+
+class CCodec_JpxModule : public ICodec_JpxModule {
+ public:
+ CCodec_JpxModule();
+ ~CCodec_JpxModule() override;
+
+ // ICodec_JpxModule:
+ CJPX_Decoder* CreateDecoder(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CPDF_ColorSpace* cs) override;
+ void GetImageInfo(CJPX_Decoder* pDecoder,
+ FX_DWORD* width,
+ FX_DWORD* height,
+ FX_DWORD* components) override;
+ bool Decode(CJPX_Decoder* pDecoder,
+ uint8_t* dest_data,
+ int pitch,
+ const std::vector<uint8_t>& offsets) override;
+ void DestroyDecoder(CJPX_Decoder* pDecoder) override;
+};
+
+#ifdef PDF_ENABLE_XFA
+class CCodec_TiffModule : public ICodec_TiffModule {
+ public:
+ // ICodec_TiffModule
+ void* CreateDecoder(IFX_FileRead* file_ptr) override;
+ void GetFrames(void* ctx, int32_t& frames) override;
+ FX_BOOL LoadFrameInfo(void* ctx,
+ int32_t frame,
+ FX_DWORD& width,
+ FX_DWORD& height,
+ FX_DWORD& comps,
+ FX_DWORD& bpc,
+ CFX_DIBAttribute* pAttribute) override;
+ FX_BOOL Decode(void* ctx, class CFX_DIBitmap* pDIBitmap) override;
+ void DestroyDecoder(void* ctx) override;
+
+ protected:
+ ~CCodec_TiffModule() override {}
+};
+#endif // PDF_ENABLE_XFA
+
+class CCodec_Jbig2Context {
+ public:
+ CCodec_Jbig2Context();
+ ~CCodec_Jbig2Context() {}
+
+ FX_DWORD m_width;
+ FX_DWORD m_height;
+ CPDF_StreamAcc* m_pGlobalStream;
+ CPDF_StreamAcc* m_pSrcStream;
+ uint8_t* m_dest_buf;
+ FX_DWORD m_dest_pitch;
+ IFX_Pause* m_pPause;
+ CJBig2_Context* m_pContext;
+ CJBig2_Image* m_dest_image;
+};
+class CCodec_Jbig2Module : public ICodec_Jbig2Module {
+ public:
+ CCodec_Jbig2Module() {}
+ ~CCodec_Jbig2Module() override;
+
+ // ICodec_Jbig2Module
+ void* CreateJbig2Context() override;
+ FXCODEC_STATUS StartDecode(void* pJbig2Context,
+ CFX_PrivateData* pPrivateData,
+ FX_DWORD width,
+ FX_DWORD height,
+ CPDF_StreamAcc* src_stream,
+ CPDF_StreamAcc* global_stream,
+ uint8_t* dest_buf,
+ FX_DWORD dest_pitch,
+ IFX_Pause* pPause) override;
+ FXCODEC_STATUS ContinueDecode(void* pJbig2Context,
+ IFX_Pause* pPause) override;
+ void DestroyJbig2Context(void* pJbig2Context) override;
+};
+
+struct DecodeData {
+ public:
+ DecodeData(unsigned char* src_data, OPJ_SIZE_T src_size)
+ : src_data(src_data), src_size(src_size), offset(0) {}
+ unsigned char* src_data;
+ OPJ_SIZE_T src_size;
+ OPJ_SIZE_T offset;
+};
+
+void sycc420_to_rgb(opj_image_t* img);
+
+/* Wrappers for C-style callbacks. */
+OPJ_SIZE_T opj_read_from_memory(void* p_buffer,
+ OPJ_SIZE_T nb_bytes,
+ void* p_user_data);
+OPJ_SIZE_T opj_write_from_memory(void* p_buffer,
+ OPJ_SIZE_T nb_bytes,
+ void* p_user_data);
+OPJ_OFF_T opj_skip_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data);
+OPJ_BOOL opj_seek_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data);
+
+#endif // CORE_FXCODEC_CODEC_CODEC_INT_H_
diff --git a/core/fxcodec/codec/fx_codec.cpp b/core/fxcodec/codec/fx_codec.cpp
new file mode 100644
index 0000000..f1298f9
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec.cpp
@@ -0,0 +1,487 @@
+// 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 "core/include/fxcodec/fx_codec.h"
+
+#include <cmath>
+#include <utility>
+
+#include "core/fxcodec/codec/codec_int.h"
+#include "core/include/fxcrt/fx_ext.h"
+#include "core/include/fxcrt/fx_safe_types.h"
+#include "third_party/base/logging.h"
+
+CCodec_ModuleMgr::CCodec_ModuleMgr()
+ : m_pBasicModule(new CCodec_BasicModule),
+ m_pFaxModule(new CCodec_FaxModule),
+ m_pJpegModule(new CCodec_JpegModule),
+ m_pJpxModule(new CCodec_JpxModule),
+ m_pJbig2Module(new CCodec_Jbig2Module),
+ m_pIccModule(new CCodec_IccModule),
+#ifdef PDF_ENABLE_XFA
+ m_pPngModule(new CCodec_PngModule),
+ m_pGifModule(new CCodec_GifModule),
+ m_pBmpModule(new CCodec_BmpModule),
+ m_pTiffModule(new CCodec_TiffModule),
+#endif // PDF_ENABLE_XFA
+ m_pFlateModule(new CCodec_FlateModule) {
+}
+
+CCodec_ScanlineDecoder::ImageDataCache::ImageDataCache(int width,
+ int height,
+ FX_DWORD pitch)
+ : m_Width(width), m_Height(height), m_Pitch(pitch), m_nCachedLines(0) {}
+
+CCodec_ScanlineDecoder::ImageDataCache::~ImageDataCache() {}
+
+bool CCodec_ScanlineDecoder::ImageDataCache::AllocateCache() {
+ if (m_Pitch == 0 || m_Height < 0)
+ return false;
+
+ FX_SAFE_SIZE_T size = m_Pitch;
+ size *= m_Height;
+ if (!size.IsValid())
+ return false;
+
+ m_Data.reset(FX_TryAlloc(uint8_t, size.ValueOrDie()));
+ return IsValid();
+}
+
+void CCodec_ScanlineDecoder::ImageDataCache::AppendLine(const uint8_t* line) {
+ // If the callers adds more lines than there is room, fail.
+ if (m_Pitch == 0 || m_nCachedLines >= m_Height) {
+ NOTREACHED();
+ return;
+ }
+
+ size_t offset = m_Pitch;
+ FXSYS_memcpy(m_Data.get() + offset * m_nCachedLines, line, m_Pitch);
+ ++m_nCachedLines;
+}
+
+const uint8_t* CCodec_ScanlineDecoder::ImageDataCache::GetLine(int line) const {
+ if (m_Pitch == 0 || line < 0 || line >= m_nCachedLines)
+ return nullptr;
+
+ size_t offset = m_Pitch;
+ return m_Data.get() + offset * line;
+}
+
+CCodec_ScanlineDecoder::CCodec_ScanlineDecoder()
+ : m_NextLine(-1), m_pLastScanline(nullptr) {}
+
+CCodec_ScanlineDecoder::~CCodec_ScanlineDecoder() {}
+
+const uint8_t* CCodec_ScanlineDecoder::GetScanline(int line) {
+ if (m_pDataCache && line < m_pDataCache->NumLines())
+ return m_pDataCache->GetLine(line);
+
+ if (m_NextLine == line + 1)
+ return m_pLastScanline;
+
+ if (m_NextLine < 0 || m_NextLine > line) {
+ if (!v_Rewind())
+ return nullptr;
+ m_NextLine = 0;
+ }
+ while (m_NextLine < line) {
+ ReadNextLine();
+ m_NextLine++;
+ }
+ m_pLastScanline = ReadNextLine();
+ m_NextLine++;
+ return m_pLastScanline;
+}
+
+FX_BOOL CCodec_ScanlineDecoder::SkipToScanline(int line, IFX_Pause* pPause) {
+ if (m_pDataCache && line < m_pDataCache->NumLines())
+ return FALSE;
+
+ if (m_NextLine == line || m_NextLine == line + 1)
+ return FALSE;
+
+ if (m_NextLine < 0 || m_NextLine > line) {
+ v_Rewind();
+ m_NextLine = 0;
+ }
+ m_pLastScanline = nullptr;
+ while (m_NextLine < line) {
+ m_pLastScanline = ReadNextLine();
+ m_NextLine++;
+ if (pPause && pPause->NeedToPauseNow()) {
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+uint8_t* CCodec_ScanlineDecoder::ReadNextLine() {
+ uint8_t* pLine = v_GetNextLine();
+ if (!pLine)
+ return nullptr;
+
+ if (m_pDataCache && m_NextLine == m_pDataCache->NumLines())
+ m_pDataCache->AppendLine(pLine);
+ return pLine;
+}
+
+void CCodec_ScanlineDecoder::DownScale(int dest_width, int dest_height) {
+ dest_width = std::abs(dest_width);
+ dest_height = std::abs(dest_height);
+ v_DownScale(dest_width, dest_height);
+
+ if (m_pDataCache &&
+ m_pDataCache->IsSameDimensions(m_OutputWidth, m_OutputHeight)) {
+ return;
+ }
+
+ std::unique_ptr<ImageDataCache> cache(
+ new ImageDataCache(m_OutputWidth, m_OutputHeight, m_Pitch));
+ if (!cache->AllocateCache())
+ return;
+
+ m_pDataCache = std::move(cache);
+}
+
+FX_BOOL CCodec_BasicModule::RunLengthEncode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) {
+ return FALSE;
+}
+
+#define EXPONENT_DETECT(ptr) \
+ for (;; ptr++) { \
+ if (!std::isdigit(*ptr)) { \
+ if (endptr) \
+ *endptr = (char*)ptr; \
+ break; \
+ } else { \
+ exp_ret *= 10; \
+ exp_ret += FXSYS_toDecimalDigit(*ptr); \
+ continue; \
+ } \
+ }
+
+extern "C" double FXstrtod(const char* nptr, char** endptr) {
+ double ret = 0.0;
+ const char* ptr = nptr;
+ const char* exp_ptr = NULL;
+ int e_number = 0, e_signal = 0, e_point = 0, is_negative = 0;
+ int exp_ret = 0, exp_sig = 1, fra_ret = 0, fra_count = 0, fra_base = 1;
+ if (!nptr) {
+ return 0.0;
+ }
+ for (;; ptr++) {
+ if (!e_number && !e_point && (*ptr == '\t' || *ptr == ' '))
+ continue;
+
+ if (std::isdigit(*ptr)) {
+ if (!e_number)
+ e_number = 1;
+
+ if (!e_point) {
+ ret *= 10;
+ ret += FXSYS_toDecimalDigit(*ptr);
+ } else {
+ fra_count++;
+ fra_ret *= 10;
+ fra_ret += FXSYS_toDecimalDigit(*ptr);
+ }
+ continue;
+ }
+ if (!e_point && *ptr == '.') {
+ e_point = 1;
+ continue;
+ }
+ if (!e_number && !e_point && !e_signal) {
+ switch (*ptr) {
+ case '-':
+ is_negative = 1;
+ case '+':
+ e_signal = 1;
+ continue;
+ }
+ }
+ if (e_number && (*ptr == 'e' || *ptr == 'E')) {
+ exp_ptr = ptr++;
+ if (*ptr == '+' || *ptr == '-') {
+ exp_sig = (*ptr++ == '+') ? 1 : -1;
+ if (!std::isdigit(*ptr)) {
+ if (endptr) {
+ *endptr = (char*)exp_ptr;
+ }
+ break;
+ }
+ EXPONENT_DETECT(ptr);
+ } else if (std::isdigit(*ptr)) {
+ EXPONENT_DETECT(ptr);
+ } else {
+ if (endptr) {
+ *endptr = (char*)exp_ptr;
+ }
+ break;
+ }
+ break;
+ }
+ if (ptr != nptr && !e_number) {
+ if (endptr) {
+ *endptr = (char*)nptr;
+ }
+ break;
+ }
+ if (endptr) {
+ *endptr = (char*)ptr;
+ }
+ break;
+ }
+ while (fra_count--) {
+ fra_base *= 10;
+ }
+ ret += (double)fra_ret / (double)fra_base;
+ if (exp_sig == 1) {
+ while (exp_ret--) {
+ ret *= 10.0;
+ }
+ } else {
+ while (exp_ret--) {
+ ret /= 10.0;
+ }
+ }
+ return is_negative ? -ret : ret;
+}
+#undef EXPONENT_DETECT
+
+FX_BOOL CCodec_BasicModule::A85Encode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) {
+ return FALSE;
+}
+
+#ifdef PDF_ENABLE_XFA
+CFX_DIBAttribute::CFX_DIBAttribute()
+ : m_nXDPI(-1),
+ m_nYDPI(-1),
+ m_fAspectRatio(-1.0f),
+ m_wDPIUnit(0),
+ m_nGifLeft(0),
+ m_nGifTop(0),
+ m_pGifLocalPalette(nullptr),
+ m_nGifLocalPalNum(0),
+ m_nBmpCompressType(0) {
+ FXSYS_memset(m_strTime, 0, sizeof(m_strTime));
+}
+CFX_DIBAttribute::~CFX_DIBAttribute() {
+ for (const auto& pair : m_Exif)
+ FX_Free(pair.second);
+}
+#endif // PDF_ENABLE_XFA
+
+class CCodec_RLScanlineDecoder : public CCodec_ScanlineDecoder {
+ public:
+ CCodec_RLScanlineDecoder();
+ ~CCodec_RLScanlineDecoder() override;
+
+ FX_BOOL Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc);
+
+ // CCodec_ScanlineDecoder
+ void v_DownScale(int dest_width, int dest_height) override {}
+ FX_BOOL v_Rewind() override;
+ uint8_t* v_GetNextLine() override;
+ FX_DWORD GetSrcOffset() override { return m_SrcOffset; }
+
+ protected:
+ FX_BOOL CheckDestSize();
+ void GetNextOperator();
+ void UpdateOperator(uint8_t used_bytes);
+
+ uint8_t* m_pScanline;
+ const uint8_t* m_pSrcBuf;
+ FX_DWORD m_SrcSize;
+ FX_DWORD m_dwLineBytes;
+ FX_DWORD m_SrcOffset;
+ FX_BOOL m_bEOD;
+ uint8_t m_Operator;
+};
+CCodec_RLScanlineDecoder::CCodec_RLScanlineDecoder()
+ : m_pScanline(NULL),
+ m_pSrcBuf(NULL),
+ m_SrcSize(0),
+ m_dwLineBytes(0),
+ m_SrcOffset(0),
+ m_bEOD(FALSE),
+ m_Operator(0) {}
+CCodec_RLScanlineDecoder::~CCodec_RLScanlineDecoder() {
+ FX_Free(m_pScanline);
+}
+FX_BOOL CCodec_RLScanlineDecoder::CheckDestSize() {
+ FX_DWORD i = 0;
+ FX_DWORD old_size = 0;
+ FX_DWORD dest_size = 0;
+ while (i < m_SrcSize) {
+ if (m_pSrcBuf[i] < 128) {
+ old_size = dest_size;
+ dest_size += m_pSrcBuf[i] + 1;
+ if (dest_size < old_size) {
+ return FALSE;
+ }
+ i += m_pSrcBuf[i] + 2;
+ } else if (m_pSrcBuf[i] > 128) {
+ old_size = dest_size;
+ dest_size += 257 - m_pSrcBuf[i];
+ if (dest_size < old_size) {
+ return FALSE;
+ }
+ i += 2;
+ } else {
+ break;
+ }
+ }
+ if (((FX_DWORD)m_OrigWidth * m_nComps * m_bpc * m_OrigHeight + 7) / 8 >
+ dest_size) {
+ return FALSE;
+ }
+ return TRUE;
+}
+FX_BOOL CCodec_RLScanlineDecoder::Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc) {
+ m_pSrcBuf = src_buf;
+ m_SrcSize = src_size;
+ m_OutputWidth = m_OrigWidth = width;
+ m_OutputHeight = m_OrigHeight = height;
+ m_nComps = nComps;
+ m_bpc = bpc;
+ m_bColorTransformed = FALSE;
+ m_DownScale = 1;
+ // Aligning the pitch to 4 bytes requires an integer overflow check.
+ FX_SAFE_DWORD pitch = width;
+ pitch *= nComps;
+ pitch *= bpc;
+ pitch += 31;
+ pitch /= 32;
+ pitch *= 4;
+ if (!pitch.IsValid()) {
+ return FALSE;
+ }
+ m_Pitch = pitch.ValueOrDie();
+ // Overflow should already have been checked before this is called.
+ m_dwLineBytes = (static_cast<FX_DWORD>(width) * nComps * bpc + 7) / 8;
+ m_pScanline = FX_Alloc(uint8_t, m_Pitch);
+ return CheckDestSize();
+}
+FX_BOOL CCodec_RLScanlineDecoder::v_Rewind() {
+ FXSYS_memset(m_pScanline, 0, m_Pitch);
+ m_SrcOffset = 0;
+ m_bEOD = FALSE;
+ m_Operator = 0;
+ return TRUE;
+}
+uint8_t* CCodec_RLScanlineDecoder::v_GetNextLine() {
+ if (m_SrcOffset == 0) {
+ GetNextOperator();
+ } else {
+ if (m_bEOD) {
+ return NULL;
+ }
+ }
+ FXSYS_memset(m_pScanline, 0, m_Pitch);
+ FX_DWORD col_pos = 0;
+ FX_BOOL eol = FALSE;
+ while (m_SrcOffset < m_SrcSize && !eol) {
+ if (m_Operator < 128) {
+ FX_DWORD copy_len = m_Operator + 1;
+ if (col_pos + copy_len >= m_dwLineBytes) {
+ copy_len = m_dwLineBytes - col_pos;
+ eol = TRUE;
+ }
+ if (copy_len >= m_SrcSize - m_SrcOffset) {
+ copy_len = m_SrcSize - m_SrcOffset;
+ m_bEOD = TRUE;
+ }
+ FXSYS_memcpy(m_pScanline + col_pos, m_pSrcBuf + m_SrcOffset, copy_len);
+ col_pos += copy_len;
+ UpdateOperator((uint8_t)copy_len);
+ } else if (m_Operator > 128) {
+ int fill = 0;
+ if (m_SrcOffset - 1 < m_SrcSize - 1) {
+ fill = m_pSrcBuf[m_SrcOffset];
+ }
+ FX_DWORD duplicate_len = 257 - m_Operator;
+ if (col_pos + duplicate_len >= m_dwLineBytes) {
+ duplicate_len = m_dwLineBytes - col_pos;
+ eol = TRUE;
+ }
+ FXSYS_memset(m_pScanline + col_pos, fill, duplicate_len);
+ col_pos += duplicate_len;
+ UpdateOperator((uint8_t)duplicate_len);
+ } else {
+ m_bEOD = TRUE;
+ break;
+ }
+ }
+ return m_pScanline;
+}
+void CCodec_RLScanlineDecoder::GetNextOperator() {
+ if (m_SrcOffset >= m_SrcSize) {
+ m_Operator = 128;
+ return;
+ }
+ m_Operator = m_pSrcBuf[m_SrcOffset];
+ m_SrcOffset++;
+}
+void CCodec_RLScanlineDecoder::UpdateOperator(uint8_t used_bytes) {
+ if (used_bytes == 0) {
+ return;
+ }
+ if (m_Operator < 128) {
+ FXSYS_assert((FX_DWORD)m_Operator + 1 >= used_bytes);
+ if (used_bytes == m_Operator + 1) {
+ m_SrcOffset += used_bytes;
+ GetNextOperator();
+ return;
+ }
+ m_Operator -= used_bytes;
+ m_SrcOffset += used_bytes;
+ if (m_SrcOffset >= m_SrcSize) {
+ m_Operator = 128;
+ }
+ return;
+ }
+ uint8_t count = 257 - m_Operator;
+ FXSYS_assert((FX_DWORD)count >= used_bytes);
+ if (used_bytes == count) {
+ m_SrcOffset++;
+ GetNextOperator();
+ return;
+ }
+ count -= used_bytes;
+ m_Operator = 257 - count;
+}
+ICodec_ScanlineDecoder* CCodec_BasicModule::CreateRunLengthDecoder(
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc) {
+ CCodec_RLScanlineDecoder* pRLScanlineDecoder = new CCodec_RLScanlineDecoder;
+ if (!pRLScanlineDecoder->Create(src_buf, src_size, width, height, nComps,
+ bpc)) {
+ delete pRLScanlineDecoder;
+ return NULL;
+ }
+ return pRLScanlineDecoder;
+}
diff --git a/core/fxcodec/codec/fx_codec_bmp.cpp b/core/fxcodec/codec/fx_codec_bmp.cpp
new file mode 100644
index 0000000..d2299d6
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_bmp.cpp
@@ -0,0 +1,125 @@
+// 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 "core/fxcodec/codec/codec_int.h"
+#include "core/fxcodec/lbmp/fx_bmp.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxge/fx_dib.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) {
+ FX_Free(p);
+}
+};
+static void bmp_error_data(bmp_decompress_struct_p bmp_ptr,
+ const FX_CHAR* 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,
+ int32_t row_num,
+ uint8_t* 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(uint8_t, sizeof(FXBMP_Context));
+ if (p == NULL) {
+ return NULL;
+ }
+ FXSYS_memset(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) {
+ bmp_destroy_decompress(&p->bmp_ptr);
+ p->m_FreeFunc(p);
+ }
+}
+int32_t CCodec_BmpModule::ReadHeader(void* pContext,
+ int32_t* width,
+ int32_t* height,
+ FX_BOOL* tb_flag,
+ int32_t* components,
+ int32_t* pal_num,
+ FX_DWORD** pal_pp,
+ CFX_DIBAttribute* pAttribute) {
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ if (setjmp(p->bmp_ptr->jmpbuf)) {
+ return 0;
+ }
+ int32_t 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;
+}
+int32_t 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,
+ uint8_t** 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,
+ const uint8_t* src_buf,
+ FX_DWORD src_size) {
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ bmp_input_buffer(p->bmp_ptr, (uint8_t*)src_buf, src_size);
+}
diff --git a/core/fxcodec/codec/fx_codec_fax.cpp b/core/fxcodec/codec/fx_codec_fax.cpp
new file mode 100644
index 0000000..13ffcda
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_fax.cpp
@@ -0,0 +1,830 @@
+// 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 "core/fxcodec/codec/codec_int.h"
+#include "core/include/fxcodec/fx_codec.h"
+
+namespace {
+
+const uint8_t OneLeadPos[256] = {
+ 8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+};
+const uint8_t ZeroLeadPos[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8,
+};
+
+int FindBit(const uint8_t* data_buf, int max_pos, int start_pos, int bit) {
+ if (start_pos >= max_pos) {
+ return max_pos;
+ }
+ const uint8_t* leading_pos = bit ? OneLeadPos : ZeroLeadPos;
+ if (start_pos % 8) {
+ uint8_t data = data_buf[start_pos / 8];
+ if (bit) {
+ data &= 0xff >> (start_pos % 8);
+ } else {
+ data |= 0xff << (8 - start_pos % 8);
+ }
+ if (leading_pos[data] < 8) {
+ return start_pos / 8 * 8 + leading_pos[data];
+ }
+ start_pos += 7;
+ }
+ uint8_t skip = bit ? 0x00 : 0xff;
+ int byte_pos = start_pos / 8;
+ int max_byte = (max_pos + 7) / 8;
+ while (byte_pos < max_byte) {
+ if (data_buf[byte_pos] != skip) {
+ break;
+ }
+ byte_pos++;
+ }
+ if (byte_pos == max_byte) {
+ return max_pos;
+ }
+ int pos = leading_pos[data_buf[byte_pos]] + byte_pos * 8;
+ if (pos > max_pos) {
+ pos = max_pos;
+ }
+ return pos;
+}
+
+void FaxG4FindB1B2(const uint8_t* ref_buf,
+ int columns,
+ int a0,
+ bool a0color,
+ int& b1,
+ int& b2) {
+ uint8_t first_bit =
+ (a0 < 0) ? 1 : ((ref_buf[a0 / 8] & (1 << (7 - a0 % 8))) != 0);
+ b1 = FindBit(ref_buf, columns, a0 + 1, !first_bit);
+ if (b1 >= columns) {
+ b1 = b2 = columns;
+ return;
+ }
+ if (first_bit == !a0color) {
+ b1 = FindBit(ref_buf, columns, b1 + 1, first_bit);
+ first_bit = !first_bit;
+ }
+ if (b1 >= columns) {
+ b1 = b2 = columns;
+ return;
+ }
+ b2 = FindBit(ref_buf, columns, b1 + 1, first_bit);
+}
+
+void FaxFillBits(uint8_t* dest_buf, int columns, int startpos, int endpos) {
+ if (startpos < 0) {
+ startpos = 0;
+ }
+ if (endpos < 0) {
+ endpos = 0;
+ }
+ if (endpos >= columns) {
+ endpos = columns;
+ }
+ if (startpos >= endpos) {
+ return;
+ }
+ int first_byte = startpos / 8;
+ int last_byte = (endpos - 1) / 8;
+ if (first_byte == last_byte) {
+ for (int i = startpos % 8; i <= (endpos - 1) % 8; i++) {
+ dest_buf[first_byte] -= 1 << (7 - i);
+ }
+ return;
+ }
+ int i;
+ for (i = startpos % 8; i < 8; i++) {
+ dest_buf[first_byte] -= 1 << (7 - i);
+ }
+ for (i = 0; i <= (endpos - 1) % 8; i++) {
+ dest_buf[last_byte] -= 1 << (7 - i);
+ }
+ if (last_byte > first_byte + 1) {
+ FXSYS_memset(dest_buf + first_byte + 1, 0, last_byte - first_byte - 1);
+ }
+}
+
+#define NEXTBIT \
+ src_buf[bitpos / 8] & (1 << (7 - bitpos % 8)); \
+ bitpos++;
+#define ADDBIT(code, bit) \
+ code = code << 1; \
+ if (bit) \
+ code++;
+#define GETBIT(bitpos) src_buf[bitpos / 8] & (1 << (7 - bitpos % 8))
+
+const uint8_t FaxBlackRunIns[] = {
+ 0, 2, 0x02, 3, 0, 0x03,
+ 2, 0, 2, 0x02, 1, 0,
+ 0x03, 4, 0, 2, 0x02, 6,
+ 0, 0x03, 5, 0, 1, 0x03,
+ 7, 0, 2, 0x04, 9, 0,
+ 0x05, 8, 0, 3, 0x04, 10,
+ 0, 0x05, 11, 0, 0x07, 12,
+ 0, 2, 0x04, 13, 0, 0x07,
+ 14, 0, 1, 0x18, 15, 0,
+ 5, 0x08, 18, 0, 0x0f, 64,
+ 0, 0x17, 16, 0, 0x18, 17,
+ 0, 0x37, 0, 0, 10, 0x08,
+ 0x00, 0x07, 0x0c, 0x40, 0x07, 0x0d,
+ 0x80, 0x07, 0x17, 24, 0, 0x18,
+ 25, 0, 0x28, 23, 0, 0x37,
+ 22, 0, 0x67, 19, 0, 0x68,
+ 20, 0, 0x6c, 21, 0, 54,
+ 0x12, 1984 % 256, 1984 / 256, 0x13, 2048 % 256, 2048 / 256,
+ 0x14, 2112 % 256, 2112 / 256, 0x15, 2176 % 256, 2176 / 256,
+ 0x16, 2240 % 256, 2240 / 256, 0x17, 2304 % 256, 2304 / 256,
+ 0x1c, 2368 % 256, 2368 / 256, 0x1d, 2432 % 256, 2432 / 256,
+ 0x1e, 2496 % 256, 2496 / 256, 0x1f, 2560 % 256, 2560 / 256,
+ 0x24, 52, 0, 0x27, 55, 0,
+ 0x28, 56, 0, 0x2b, 59, 0,
+ 0x2c, 60, 0, 0x33, 320 % 256, 320 / 256,
+ 0x34, 384 % 256, 384 / 256, 0x35, 448 % 256, 448 / 256,
+ 0x37, 53, 0, 0x38, 54, 0,
+ 0x52, 50, 0, 0x53, 51, 0,
+ 0x54, 44, 0, 0x55, 45, 0,
+ 0x56, 46, 0, 0x57, 47, 0,
+ 0x58, 57, 0, 0x59, 58, 0,
+ 0x5a, 61, 0, 0x5b, 256 % 256, 256 / 256,
+ 0x64, 48, 0, 0x65, 49, 0,
+ 0x66, 62, 0, 0x67, 63, 0,
+ 0x68, 30, 0, 0x69, 31, 0,
+ 0x6a, 32, 0, 0x6b, 33, 0,
+ 0x6c, 40, 0, 0x6d, 41, 0,
+ 0xc8, 128, 0, 0xc9, 192, 0,
+ 0xca, 26, 0, 0xcb, 27, 0,
+ 0xcc, 28, 0, 0xcd, 29, 0,
+ 0xd2, 34, 0, 0xd3, 35, 0,
+ 0xd4, 36, 0, 0xd5, 37, 0,
+ 0xd6, 38, 0, 0xd7, 39, 0,
+ 0xda, 42, 0, 0xdb, 43, 0,
+ 20, 0x4a, 640 % 256, 640 / 256, 0x4b, 704 % 256,
+ 704 / 256, 0x4c, 768 % 256, 768 / 256, 0x4d, 832 % 256,
+ 832 / 256, 0x52, 1280 % 256, 1280 / 256, 0x53, 1344 % 256,
+ 1344 / 256, 0x54, 1408 % 256, 1408 / 256, 0x55, 1472 % 256,
+ 1472 / 256, 0x5a, 1536 % 256, 1536 / 256, 0x5b, 1600 % 256,
+ 1600 / 256, 0x64, 1664 % 256, 1664 / 256, 0x65, 1728 % 256,
+ 1728 / 256, 0x6c, 512 % 256, 512 / 256, 0x6d, 576 % 256,
+ 576 / 256, 0x72, 896 % 256, 896 / 256, 0x73, 960 % 256,
+ 960 / 256, 0x74, 1024 % 256, 1024 / 256, 0x75, 1088 % 256,
+ 1088 / 256, 0x76, 1152 % 256, 1152 / 256, 0x77, 1216 % 256,
+ 1216 / 256, 0xff};
+
+const uint8_t FaxWhiteRunIns[] = {
+ 0, 0, 0, 6, 0x07, 2,
+ 0, 0x08, 3, 0, 0x0B, 4,
+ 0, 0x0C, 5, 0, 0x0E, 6,
+ 0, 0x0F, 7, 0, 6, 0x07,
+ 10, 0, 0x08, 11, 0, 0x12,
+ 128, 0, 0x13, 8, 0, 0x14,
+ 9, 0, 0x1b, 64, 0, 9,
+ 0x03, 13, 0, 0x07, 1, 0,
+ 0x08, 12, 0, 0x17, 192, 0,
+ 0x18, 1664 % 256, 1664 / 256, 0x2a, 16, 0,
+ 0x2B, 17, 0, 0x34, 14, 0,
+ 0x35, 15, 0, 12, 0x03, 22,
+ 0, 0x04, 23, 0, 0x08, 20,
+ 0, 0x0c, 19, 0, 0x13, 26,
+ 0, 0x17, 21, 0, 0x18, 28,
+ 0, 0x24, 27, 0, 0x27, 18,
+ 0, 0x28, 24, 0, 0x2B, 25,
+ 0, 0x37, 256 % 256, 256 / 256, 42, 0x02,
+ 29, 0, 0x03, 30, 0, 0x04,
+ 45, 0, 0x05, 46, 0, 0x0a,
+ 47, 0, 0x0b, 48, 0, 0x12,
+ 33, 0, 0x13, 34, 0, 0x14,
+ 35, 0, 0x15, 36, 0, 0x16,
+ 37, 0, 0x17, 38, 0, 0x1a,
+ 31, 0, 0x1b, 32, 0, 0x24,
+ 53, 0, 0x25, 54, 0, 0x28,
+ 39, 0, 0x29, 40, 0, 0x2a,
+ 41, 0, 0x2b, 42, 0, 0x2c,
+ 43, 0, 0x2d, 44, 0, 0x32,
+ 61, 0, 0x33, 62, 0, 0x34,
+ 63, 0, 0x35, 0, 0, 0x36,
+ 320 % 256, 320 / 256, 0x37, 384 % 256, 384 / 256, 0x4a,
+ 59, 0, 0x4b, 60, 0, 0x52,
+ 49, 0, 0x53, 50, 0, 0x54,
+ 51, 0, 0x55, 52, 0, 0x58,
+ 55, 0, 0x59, 56, 0, 0x5a,
+ 57, 0, 0x5b, 58, 0, 0x64,
+ 448 % 256, 448 / 256, 0x65, 512 % 256, 512 / 256, 0x67,
+ 640 % 256, 640 / 256, 0x68, 576 % 256, 576 / 256, 16,
+ 0x98, 1472 % 256, 1472 / 256, 0x99, 1536 % 256, 1536 / 256,
+ 0x9a, 1600 % 256, 1600 / 256, 0x9b, 1728 % 256, 1728 / 256,
+ 0xcc, 704 % 256, 704 / 256, 0xcd, 768 % 256, 768 / 256,
+ 0xd2, 832 % 256, 832 / 256, 0xd3, 896 % 256, 896 / 256,
+ 0xd4, 960 % 256, 960 / 256, 0xd5, 1024 % 256, 1024 / 256,
+ 0xd6, 1088 % 256, 1088 / 256, 0xd7, 1152 % 256, 1152 / 256,
+ 0xd8, 1216 % 256, 1216 / 256, 0xd9, 1280 % 256, 1280 / 256,
+ 0xda, 1344 % 256, 1344 / 256, 0xdb, 1408 % 256, 1408 / 256,
+ 0, 3, 0x08, 1792 % 256, 1792 / 256, 0x0c,
+ 1856 % 256, 1856 / 256, 0x0d, 1920 % 256, 1920 / 256, 10,
+ 0x12, 1984 % 256, 1984 / 256, 0x13, 2048 % 256, 2048 / 256,
+ 0x14, 2112 % 256, 2112 / 256, 0x15, 2176 % 256, 2176 / 256,
+ 0x16, 2240 % 256, 2240 / 256, 0x17, 2304 % 256, 2304 / 256,
+ 0x1c, 2368 % 256, 2368 / 256, 0x1d, 2432 % 256, 2432 / 256,
+ 0x1e, 2496 % 256, 2496 / 256, 0x1f, 2560 % 256, 2560 / 256,
+ 0xff,
+};
+
+int FaxGetRun(const uint8_t* ins_array,
+ const uint8_t* src_buf,
+ int& bitpos,
+ int bitsize) {
+ FX_DWORD code = 0;
+ int ins_off = 0;
+ while (1) {
+ uint8_t ins = ins_array[ins_off++];
+ if (ins == 0xff) {
+ return -1;
+ }
+ if (bitpos >= bitsize) {
+ return -1;
+ }
+ code <<= 1;
+ if (src_buf[bitpos / 8] & (1 << (7 - bitpos % 8))) {
+ code++;
+ }
+ bitpos++;
+ int next_off = ins_off + ins * 3;
+ for (; ins_off < next_off; ins_off += 3) {
+ if (ins_array[ins_off] == code) {
+ return ins_array[ins_off + 1] + ins_array[ins_off + 2] * 256;
+ }
+ }
+ }
+}
+
+FX_BOOL FaxG4GetRow(const uint8_t* src_buf,
+ int bitsize,
+ int& bitpos,
+ uint8_t* dest_buf,
+ const uint8_t* ref_buf,
+ int columns) {
+ int a0 = -1;
+ bool a0color = true;
+ while (1) {
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ int a1, a2, b1, b2;
+ FaxG4FindB1B2(ref_buf, columns, a0, a0color, b1, b2);
+ FX_BOOL bit = NEXTBIT;
+ int v_delta = 0;
+ if (bit) {
+ } else {
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ FX_BOOL bit1 = NEXTBIT;
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ FX_BOOL bit2 = NEXTBIT;
+ if (bit1 && bit2) {
+ v_delta = 1;
+ } else if (bit1) {
+ v_delta = -1;
+ } else if (bit2) {
+ int run_len1 = 0;
+ while (1) {
+ int run = FaxGetRun(a0color ? FaxWhiteRunIns : FaxBlackRunIns,
+ src_buf, bitpos, bitsize);
+ run_len1 += run;
+ if (run < 64) {
+ break;
+ }
+ }
+ if (a0 < 0) {
+ run_len1++;
+ }
+ a1 = a0 + run_len1;
+ if (!a0color) {
+ FaxFillBits(dest_buf, columns, a0, a1);
+ }
+ int run_len2 = 0;
+ while (1) {
+ int run = FaxGetRun(a0color ? FaxBlackRunIns : FaxWhiteRunIns,
+ src_buf, bitpos, bitsize);
+ run_len2 += run;
+ if (run < 64) {
+ break;
+ }
+ }
+ a2 = a1 + run_len2;
+ if (a0color) {
+ FaxFillBits(dest_buf, columns, a1, a2);
+ }
+ a0 = a2;
+ if (a0 < columns) {
+ continue;
+ }
+ return TRUE;
+ } else {
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ bit = NEXTBIT;
+ if (bit) {
+ if (!a0color) {
+ FaxFillBits(dest_buf, columns, a0, b2);
+ }
+ if (b2 >= columns) {
+ return TRUE;
+ }
+ a0 = b2;
+ continue;
+ } else {
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ FX_BOOL bit1 = NEXTBIT;
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ FX_BOOL bit2 = NEXTBIT;
+ if (bit1 && bit2) {
+ v_delta = 2;
+ } else if (bit1) {
+ v_delta = -2;
+ } else if (bit2) {
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ bit = NEXTBIT;
+ if (bit) {
+ v_delta = 3;
+ } else {
+ v_delta = -3;
+ }
+ } else {
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ bit = NEXTBIT;
+ if (bit) {
+ bitpos += 3;
+ continue;
+ } else {
+ bitpos += 5;
+ return TRUE;
+ }
+ }
+ }
+ }
+ }
+ a1 = b1 + v_delta;
+ if (!a0color) {
+ FaxFillBits(dest_buf, columns, a0, a1);
+ }
+ if (a1 >= columns) {
+ return TRUE;
+ }
+ a0 = a1;
+ a0color = !a0color;
+ }
+}
+
+FX_BOOL FaxSkipEOL(const uint8_t* src_buf, int bitsize, int& bitpos) {
+ int startbit = bitpos;
+ while (bitpos < bitsize) {
+ int bit = NEXTBIT;
+ if (bit) {
+ if (bitpos - startbit <= 11) {
+ bitpos = startbit;
+ }
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+FX_BOOL FaxGet1DLine(const uint8_t* src_buf,
+ int bitsize,
+ int& bitpos,
+ uint8_t* dest_buf,
+ int columns) {
+ bool color = true;
+ int startpos = 0;
+ while (1) {
+ if (bitpos >= bitsize) {
+ return FALSE;
+ }
+ int run_len = 0;
+ while (1) {
+ int run = FaxGetRun(color ? FaxWhiteRunIns : FaxBlackRunIns, src_buf,
+ bitpos, bitsize);
+ if (run < 0) {
+ while (bitpos < bitsize) {
+ int bit = NEXTBIT;
+ if (bit) {
+ return TRUE;
+ }
+ }
+ return FALSE;
+ }
+ run_len += run;
+ if (run < 64) {
+ break;
+ }
+ }
+ if (!color) {
+ FaxFillBits(dest_buf, columns, startpos, startpos + run_len);
+ }
+ startpos += run_len;
+ if (startpos >= columns) {
+ break;
+ }
+ color = !color;
+ }
+ return TRUE;
+}
+
+const uint8_t BlackRunTerminator[128] = {
+ 0x37, 10, 0x02, 3, 0x03, 2, 0x02, 2, 0x03, 3, 0x03, 4, 0x02, 4,
+ 0x03, 5, 0x05, 6, 0x04, 6, 0x04, 7, 0x05, 7, 0x07, 7, 0x04, 8,
+ 0x07, 8, 0x18, 9, 0x17, 10, 0x18, 10, 0x08, 10, 0x67, 11, 0x68, 11,
+ 0x6c, 11, 0x37, 11, 0x28, 11, 0x17, 11, 0x18, 11, 0xca, 12, 0xcb, 12,
+ 0xcc, 12, 0xcd, 12, 0x68, 12, 0x69, 12, 0x6a, 12, 0x6b, 12, 0xd2, 12,
+ 0xd3, 12, 0xd4, 12, 0xd5, 12, 0xd6, 12, 0xd7, 12, 0x6c, 12, 0x6d, 12,
+ 0xda, 12, 0xdb, 12, 0x54, 12, 0x55, 12, 0x56, 12, 0x57, 12, 0x64, 12,
+ 0x65, 12, 0x52, 12, 0x53, 12, 0x24, 12, 0x37, 12, 0x38, 12, 0x27, 12,
+ 0x28, 12, 0x58, 12, 0x59, 12, 0x2b, 12, 0x2c, 12, 0x5a, 12, 0x66, 12,
+ 0x67, 12,
+};
+
+const uint8_t BlackRunMarkup[80] = {
+ 0x0f, 10, 0xc8, 12, 0xc9, 12, 0x5b, 12, 0x33, 12, 0x34, 12, 0x35, 12,
+ 0x6c, 13, 0x6d, 13, 0x4a, 13, 0x4b, 13, 0x4c, 13, 0x4d, 13, 0x72, 13,
+ 0x73, 13, 0x74, 13, 0x75, 13, 0x76, 13, 0x77, 13, 0x52, 13, 0x53, 13,
+ 0x54, 13, 0x55, 13, 0x5a, 13, 0x5b, 13, 0x64, 13, 0x65, 13, 0x08, 11,
+ 0x0c, 11, 0x0d, 11, 0x12, 12, 0x13, 12, 0x14, 12, 0x15, 12, 0x16, 12,
+ 0x17, 12, 0x1c, 12, 0x1d, 12, 0x1e, 12, 0x1f, 12,
+};
+
+const uint8_t WhiteRunTerminator[128] = {
+ 0x35, 8, 0x07, 6, 0x07, 4, 0x08, 4, 0x0B, 4, 0x0C, 4, 0x0E, 4, 0x0F, 4,
+ 0x13, 5, 0x14, 5, 0x07, 5, 0x08, 5, 0x08, 6, 0x03, 6, 0x34, 6, 0x35, 6,
+ 0x2a, 6, 0x2B, 6, 0x27, 7, 0x0c, 7, 0x08, 7, 0x17, 7, 0x03, 7, 0x04, 7,
+ 0x28, 7, 0x2B, 7, 0x13, 7, 0x24, 7, 0x18, 7, 0x02, 8, 0x03, 8, 0x1a, 8,
+ 0x1b, 8, 0x12, 8, 0x13, 8, 0x14, 8, 0x15, 8, 0x16, 8, 0x17, 8, 0x28, 8,
+ 0x29, 8, 0x2a, 8, 0x2b, 8, 0x2c, 8, 0x2d, 8, 0x04, 8, 0x05, 8, 0x0a, 8,
+ 0x0b, 8, 0x52, 8, 0x53, 8, 0x54, 8, 0x55, 8, 0x24, 8, 0x25, 8, 0x58, 8,
+ 0x59, 8, 0x5a, 8, 0x5b, 8, 0x4a, 8, 0x4b, 8, 0x32, 8, 0x33, 8, 0x34, 8,
+};
+
+const uint8_t WhiteRunMarkup[80] = {
+ 0x1b, 5, 0x12, 5, 0x17, 6, 0x37, 7, 0x36, 8, 0x37, 8, 0x64, 8,
+ 0x65, 8, 0x68, 8, 0x67, 8, 0xcc, 9, 0xcd, 9, 0xd2, 9, 0xd3, 9,
+ 0xd4, 9, 0xd5, 9, 0xd6, 9, 0xd7, 9, 0xd8, 9, 0xd9, 9, 0xda, 9,
+ 0xdb, 9, 0x98, 9, 0x99, 9, 0x9a, 9, 0x18, 6, 0x9b, 9, 0x08, 11,
+ 0x0c, 11, 0x0d, 11, 0x12, 12, 0x13, 12, 0x14, 12, 0x15, 12, 0x16, 12,
+ 0x17, 12, 0x1c, 12, 0x1d, 12, 0x1e, 12, 0x1f, 12,
+};
+
+void AddBitStream(uint8_t* dest_buf, int& dest_bitpos, int data, int bitlen) {
+ for (int i = bitlen - 1; i >= 0; i--) {
+ if (data & (1 << i)) {
+ dest_buf[dest_bitpos / 8] |= 1 << (7 - dest_bitpos % 8);
+ }
+ dest_bitpos++;
+ }
+}
+
+void FaxEncodeRun(uint8_t* dest_buf, int& dest_bitpos, int run, bool bWhite) {
+ while (run >= 2560) {
+ AddBitStream(dest_buf, dest_bitpos, 0x1f, 12);
+ run -= 2560;
+ }
+ if (run >= 64) {
+ int markup = run - run % 64;
+ const uint8_t* p = bWhite ? WhiteRunMarkup : BlackRunMarkup;
+ p += (markup / 64 - 1) * 2;
+ AddBitStream(dest_buf, dest_bitpos, *p, p[1]);
+ }
+ run %= 64;
+ const uint8_t* p = bWhite ? WhiteRunTerminator : BlackRunTerminator;
+ p += run * 2;
+ AddBitStream(dest_buf, dest_bitpos, *p, p[1]);
+}
+
+void FaxEncode2DLine(uint8_t* dest_buf,
+ int& dest_bitpos,
+ const uint8_t* src_buf,
+ const uint8_t* ref_buf,
+ int cols) {
+ int a0 = -1;
+ bool a0color = true;
+ while (1) {
+ int a1 = FindBit(src_buf, cols, a0 + 1, !a0color);
+ int b1, b2;
+ FaxG4FindB1B2(ref_buf, cols, a0, a0color, b1, b2);
+ if (b2 < a1) {
+ dest_bitpos += 3;
+ dest_buf[dest_bitpos / 8] |= 1 << (7 - dest_bitpos % 8);
+ dest_bitpos++;
+ a0 = b2;
+ } else if (a1 - b1 <= 3 && b1 - a1 <= 3) {
+ int delta = a1 - b1;
+ switch (delta) {
+ case 0:
+ dest_buf[dest_bitpos / 8] |= 1 << (7 - dest_bitpos % 8);
+ break;
+ case 1:
+ case 2:
+ case 3:
+ dest_bitpos += delta == 1 ? 1 : delta + 2;
+ dest_buf[dest_bitpos / 8] |= 1 << (7 - dest_bitpos % 8);
+ dest_bitpos++;
+ dest_buf[dest_bitpos / 8] |= 1 << (7 - dest_bitpos % 8);
+ break;
+ case -1:
+ case -2:
+ case -3:
+ dest_bitpos += delta == -1 ? 1 : -delta + 2;
+ dest_buf[dest_bitpos / 8] |= 1 << (7 - dest_bitpos % 8);
+ dest_bitpos++;
+ break;
+ }
+ dest_bitpos++;
+ a0 = a1;
+ a0color = !a0color;
+ } else {
+ int a2 = FindBit(src_buf, cols, a1 + 1, a0color);
+ dest_bitpos++;
+ dest_bitpos++;
+ dest_buf[dest_bitpos / 8] |= 1 << (7 - dest_bitpos % 8);
+ dest_bitpos++;
+ if (a0 < 0) {
+ a0 = 0;
+ }
+ FaxEncodeRun(dest_buf, dest_bitpos, a1 - a0, a0color);
+ FaxEncodeRun(dest_buf, dest_bitpos, a2 - a1, !a0color);
+ a0 = a2;
+ }
+ if (a0 >= cols) {
+ return;
+ }
+ }
+}
+
+} // namespace
+
+class CCodec_FaxDecoder : public CCodec_ScanlineDecoder {
+ public:
+ CCodec_FaxDecoder();
+ ~CCodec_FaxDecoder() override;
+
+ FX_BOOL Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int K,
+ FX_BOOL EndOfLine,
+ FX_BOOL EncodedByteAlign,
+ FX_BOOL BlackIs1,
+ int Columns,
+ int Rows);
+
+ // CCodec_ScanlineDecoder
+ void v_DownScale(int dest_width, int dest_height) override {}
+ FX_BOOL v_Rewind() override;
+ uint8_t* v_GetNextLine() override;
+ FX_DWORD GetSrcOffset() override;
+
+ int m_Encoding, m_bEndOfLine, m_bByteAlign, m_bBlack;
+ int bitpos;
+ const uint8_t* m_pSrcBuf;
+ FX_DWORD m_SrcSize;
+ uint8_t* m_pScanlineBuf;
+ uint8_t* m_pRefBuf;
+};
+
+CCodec_FaxDecoder::CCodec_FaxDecoder() {
+ m_pScanlineBuf = NULL;
+ m_pRefBuf = NULL;
+}
+CCodec_FaxDecoder::~CCodec_FaxDecoder() {
+ FX_Free(m_pScanlineBuf);
+ FX_Free(m_pRefBuf);
+}
+FX_BOOL CCodec_FaxDecoder::Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int K,
+ FX_BOOL EndOfLine,
+ FX_BOOL EncodedByteAlign,
+ FX_BOOL BlackIs1,
+ int Columns,
+ int Rows) {
+ m_Encoding = K;
+ m_bEndOfLine = EndOfLine;
+ m_bByteAlign = EncodedByteAlign;
+ m_bBlack = BlackIs1;
+ m_OrigWidth = Columns;
+ m_OrigHeight = Rows;
+ if (m_OrigWidth == 0) {
+ m_OrigWidth = width;
+ }
+ if (m_OrigHeight == 0) {
+ m_OrigHeight = height;
+ }
+ // Should not overflow. Checked by FPDFAPI_CreateFaxDecoder.
+ m_Pitch = (static_cast<FX_DWORD>(m_OrigWidth) + 31) / 32 * 4;
+ m_OutputWidth = m_OrigWidth;
+ m_OutputHeight = m_OrigHeight;
+ m_pScanlineBuf = FX_Alloc(uint8_t, m_Pitch);
+ m_pRefBuf = FX_Alloc(uint8_t, m_Pitch);
+ m_pSrcBuf = src_buf;
+ m_SrcSize = src_size;
+ m_nComps = 1;
+ m_bpc = 1;
+ m_bColorTransformed = FALSE;
+ return TRUE;
+}
+FX_BOOL CCodec_FaxDecoder::v_Rewind() {
+ FXSYS_memset(m_pRefBuf, 0xff, m_Pitch);
+ bitpos = 0;
+ return TRUE;
+}
+uint8_t* CCodec_FaxDecoder::v_GetNextLine() {
+ int bitsize = m_SrcSize * 8;
+ FaxSkipEOL(m_pSrcBuf, bitsize, bitpos);
+ if (bitpos >= bitsize) {
+ return NULL;
+ }
+ FXSYS_memset(m_pScanlineBuf, 0xff, m_Pitch);
+ if (m_Encoding < 0) {
+ FaxG4GetRow(m_pSrcBuf, bitsize, bitpos, m_pScanlineBuf, m_pRefBuf,
+ m_OrigWidth);
+ FXSYS_memcpy(m_pRefBuf, m_pScanlineBuf, m_Pitch);
+ } else if (m_Encoding == 0) {
+ FaxGet1DLine(m_pSrcBuf, bitsize, bitpos, m_pScanlineBuf, m_OrigWidth);
+ } else {
+ FX_BOOL bNext1D = m_pSrcBuf[bitpos / 8] & (1 << (7 - bitpos % 8));
+ bitpos++;
+ if (bNext1D) {
+ FaxGet1DLine(m_pSrcBuf, bitsize, bitpos, m_pScanlineBuf, m_OrigWidth);
+ } else {
+ FaxG4GetRow(m_pSrcBuf, bitsize, bitpos, m_pScanlineBuf, m_pRefBuf,
+ m_OrigWidth);
+ }
+ FXSYS_memcpy(m_pRefBuf, m_pScanlineBuf, m_Pitch);
+ }
+ if (m_bEndOfLine) {
+ FaxSkipEOL(m_pSrcBuf, bitsize, bitpos);
+ }
+ if (m_bByteAlign && bitpos < bitsize) {
+ int bitpos0 = bitpos;
+ int bitpos1 = (bitpos + 7) / 8 * 8;
+ while (m_bByteAlign && bitpos0 < bitpos1) {
+ int bit = m_pSrcBuf[bitpos0 / 8] & (1 << (7 - bitpos0 % 8));
+ if (bit != 0) {
+ m_bByteAlign = FALSE;
+ } else {
+ bitpos0++;
+ }
+ }
+ if (m_bByteAlign) {
+ bitpos = bitpos1;
+ }
+ }
+ if (m_bBlack) {
+ for (FX_DWORD i = 0; i < m_Pitch; i++) {
+ m_pScanlineBuf[i] = ~m_pScanlineBuf[i];
+ }
+ }
+ return m_pScanlineBuf;
+}
+FX_DWORD CCodec_FaxDecoder::GetSrcOffset() {
+ FX_DWORD ret = (bitpos + 7) / 8;
+ if (ret > m_SrcSize) {
+ ret = m_SrcSize;
+ }
+ return ret;
+}
+
+void FaxG4Decode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int* pbitpos,
+ uint8_t* dest_buf,
+ int width,
+ int height,
+ int pitch) {
+ if (pitch == 0) {
+ pitch = (width + 7) / 8;
+ }
+ uint8_t* ref_buf = FX_Alloc(uint8_t, pitch);
+ FXSYS_memset(ref_buf, 0xff, pitch);
+ int bitpos = *pbitpos;
+ for (int iRow = 0; iRow < height; iRow++) {
+ uint8_t* line_buf = dest_buf + iRow * pitch;
+ FXSYS_memset(line_buf, 0xff, pitch);
+ FaxG4GetRow(src_buf, src_size << 3, bitpos, line_buf, ref_buf, width);
+ FXSYS_memcpy(ref_buf, line_buf, pitch);
+ }
+ FX_Free(ref_buf);
+ *pbitpos = bitpos;
+}
+
+class CCodec_FaxEncoder {
+ public:
+ CCodec_FaxEncoder(const uint8_t* src_buf, int width, int height, int pitch);
+ ~CCodec_FaxEncoder();
+ void Encode(uint8_t*& dest_buf, FX_DWORD& dest_size);
+ void Encode2DLine(const uint8_t* scan_line);
+ CFX_BinaryBuf m_DestBuf;
+ uint8_t* m_pRefLine;
+ uint8_t* m_pLineBuf;
+ int m_Cols, m_Rows, m_Pitch;
+ const uint8_t* m_pSrcBuf;
+};
+CCodec_FaxEncoder::CCodec_FaxEncoder(const uint8_t* src_buf,
+ int width,
+ int height,
+ int pitch) {
+ m_pSrcBuf = src_buf;
+ m_Cols = width;
+ m_Rows = height;
+ m_Pitch = pitch;
+ m_pRefLine = FX_Alloc(uint8_t, m_Pitch);
+ FXSYS_memset(m_pRefLine, 0xff, m_Pitch);
+ m_pLineBuf = FX_Alloc2D(uint8_t, m_Pitch, 8);
+ m_DestBuf.EstimateSize(0, 10240);
+}
+CCodec_FaxEncoder::~CCodec_FaxEncoder() {
+ FX_Free(m_pRefLine);
+ FX_Free(m_pLineBuf);
+}
+void CCodec_FaxEncoder::Encode(uint8_t*& dest_buf, FX_DWORD& dest_size) {
+ int dest_bitpos = 0;
+ uint8_t last_byte = 0;
+ for (int i = 0; i < m_Rows; i++) {
+ const uint8_t* scan_line = m_pSrcBuf + i * m_Pitch;
+ FXSYS_memset(m_pLineBuf, 0, m_Pitch * 8);
+ m_pLineBuf[0] = last_byte;
+ FaxEncode2DLine(m_pLineBuf, dest_bitpos, scan_line, m_pRefLine, m_Cols);
+ m_DestBuf.AppendBlock(m_pLineBuf, dest_bitpos / 8);
+ last_byte = m_pLineBuf[dest_bitpos / 8];
+ dest_bitpos %= 8;
+ FXSYS_memcpy(m_pRefLine, scan_line, m_Pitch);
+ }
+ if (dest_bitpos) {
+ m_DestBuf.AppendByte(last_byte);
+ }
+ dest_size = m_DestBuf.GetSize();
+ dest_buf = m_DestBuf.DetachBuffer();
+}
+FX_BOOL CCodec_FaxModule::Encode(const uint8_t* src_buf,
+ int width,
+ int height,
+ int pitch,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) {
+ CCodec_FaxEncoder encoder(src_buf, width, height, pitch);
+ encoder.Encode(dest_buf, dest_size);
+ return TRUE;
+}
+ICodec_ScanlineDecoder* CCodec_FaxModule::CreateDecoder(
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int K,
+ FX_BOOL EndOfLine,
+ FX_BOOL EncodedByteAlign,
+ FX_BOOL BlackIs1,
+ int Columns,
+ int Rows) {
+ CCodec_FaxDecoder* pDecoder = new CCodec_FaxDecoder;
+ pDecoder->Create(src_buf, src_size, width, height, K, EndOfLine,
+ EncodedByteAlign, BlackIs1, Columns, Rows);
+ return pDecoder;
+}
diff --git a/core/fxcodec/codec/fx_codec_flate.cpp b/core/fxcodec/codec/fx_codec_flate.cpp
new file mode 100644
index 0000000..49a4f34
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_flate.cpp
@@ -0,0 +1,1007 @@
+// 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 "core/fxcodec/codec/codec_int.h"
+
+#include <algorithm>
+#include <memory>
+
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxcodec/fx_codec_flate.h"
+#include "third_party/zlib_v128/zlib.h"
+
+extern "C" {
+static void* my_alloc_func(void* opaque,
+ unsigned int items,
+ unsigned int size) {
+ return FX_Alloc2D(uint8_t, items, size);
+}
+static void my_free_func(void* opaque, void* address) {
+ FX_Free(address);
+}
+static int FPDFAPI_FlateGetTotalOut(void* context) {
+ return ((z_stream*)context)->total_out;
+}
+static int FPDFAPI_FlateGetTotalIn(void* context) {
+ return ((z_stream*)context)->total_in;
+}
+static void FPDFAPI_FlateCompress(unsigned char* dest_buf,
+ unsigned long* dest_size,
+ const unsigned char* src_buf,
+ unsigned long src_size) {
+ compress(dest_buf, dest_size, src_buf, src_size);
+}
+void* FPDFAPI_FlateInit(void* (*alloc_func)(void*, unsigned int, unsigned int),
+ void (*free_func)(void*, void*)) {
+ z_stream* p = (z_stream*)alloc_func(0, 1, sizeof(z_stream));
+ if (!p) {
+ return NULL;
+ }
+ FXSYS_memset(p, 0, sizeof(z_stream));
+ p->zalloc = alloc_func;
+ p->zfree = free_func;
+ inflateInit(p);
+ return p;
+}
+void FPDFAPI_FlateInput(void* context,
+ const unsigned char* src_buf,
+ unsigned int src_size) {
+ ((z_stream*)context)->next_in = (unsigned char*)src_buf;
+ ((z_stream*)context)->avail_in = src_size;
+}
+int FPDFAPI_FlateOutput(void* context,
+ unsigned char* dest_buf,
+ unsigned int dest_size) {
+ ((z_stream*)context)->next_out = dest_buf;
+ ((z_stream*)context)->avail_out = dest_size;
+ unsigned int pre_pos = (unsigned int)FPDFAPI_FlateGetTotalOut(context);
+ int ret = inflate((z_stream*)context, Z_SYNC_FLUSH);
+ unsigned int post_pos = (unsigned int)FPDFAPI_FlateGetTotalOut(context);
+ unsigned int written = post_pos - pre_pos;
+ if (written < dest_size) {
+ FXSYS_memset(dest_buf + written, '\0', dest_size - written);
+ }
+ return ret;
+}
+int FPDFAPI_FlateGetAvailIn(void* context) {
+ return ((z_stream*)context)->avail_in;
+}
+int FPDFAPI_FlateGetAvailOut(void* context) {
+ return ((z_stream*)context)->avail_out;
+}
+void FPDFAPI_FlateEnd(void* context) {
+ inflateEnd((z_stream*)context);
+ ((z_stream*)context)->zfree(0, context);
+}
+} // extern "C"
+
+namespace {
+
+class CLZWDecoder {
+ public:
+ int Decode(uint8_t* output,
+ FX_DWORD& outlen,
+ const uint8_t* input,
+ FX_DWORD& size,
+ FX_BOOL bEarlyChange);
+
+ private:
+ void AddCode(FX_DWORD prefix_code, uint8_t append_char);
+ void DecodeString(FX_DWORD code);
+
+ FX_DWORD m_InPos;
+ FX_DWORD m_OutPos;
+ uint8_t* m_pOutput;
+ const uint8_t* m_pInput;
+ FX_BOOL m_Early;
+ FX_DWORD m_CodeArray[5021];
+ FX_DWORD m_nCodes;
+ uint8_t m_DecodeStack[4000];
+ FX_DWORD m_StackLen;
+ int m_CodeLen;
+};
+void CLZWDecoder::AddCode(FX_DWORD prefix_code, uint8_t append_char) {
+ if (m_nCodes + m_Early == 4094) {
+ return;
+ }
+ m_CodeArray[m_nCodes++] = (prefix_code << 16) | append_char;
+ if (m_nCodes + m_Early == 512 - 258) {
+ m_CodeLen = 10;
+ } else if (m_nCodes + m_Early == 1024 - 258) {
+ m_CodeLen = 11;
+ } else if (m_nCodes + m_Early == 2048 - 258) {
+ m_CodeLen = 12;
+ }
+}
+void CLZWDecoder::DecodeString(FX_DWORD code) {
+ while (1) {
+ int index = code - 258;
+ if (index < 0 || index >= (int)m_nCodes) {
+ break;
+ }
+ FX_DWORD data = m_CodeArray[index];
+ if (m_StackLen >= sizeof(m_DecodeStack)) {
+ return;
+ }
+ m_DecodeStack[m_StackLen++] = (uint8_t)data;
+ code = data >> 16;
+ }
+ if (m_StackLen >= sizeof(m_DecodeStack)) {
+ return;
+ }
+ m_DecodeStack[m_StackLen++] = (uint8_t)code;
+}
+int CLZWDecoder::Decode(uint8_t* dest_buf,
+ FX_DWORD& dest_size,
+ const uint8_t* src_buf,
+ FX_DWORD& src_size,
+ FX_BOOL bEarlyChange) {
+ m_CodeLen = 9;
+ m_InPos = 0;
+ m_OutPos = 0;
+ m_pInput = src_buf;
+ m_pOutput = dest_buf;
+ m_Early = bEarlyChange ? 1 : 0;
+ m_nCodes = 0;
+ FX_DWORD old_code = (FX_DWORD)-1;
+ uint8_t last_char;
+ while (1) {
+ if (m_InPos + m_CodeLen > src_size * 8) {
+ break;
+ }
+ int byte_pos = m_InPos / 8;
+ int bit_pos = m_InPos % 8, bit_left = m_CodeLen;
+ FX_DWORD code = 0;
+ if (bit_pos) {
+ bit_left -= 8 - bit_pos;
+ code = (m_pInput[byte_pos++] & ((1 << (8 - bit_pos)) - 1)) << bit_left;
+ }
+ if (bit_left < 8) {
+ code |= m_pInput[byte_pos] >> (8 - bit_left);
+ } else {
+ bit_left -= 8;
+ code |= m_pInput[byte_pos++] << bit_left;
+ if (bit_left) {
+ code |= m_pInput[byte_pos] >> (8 - bit_left);
+ }
+ }
+ m_InPos += m_CodeLen;
+ if (code < 256) {
+ if (m_OutPos == dest_size) {
+ return -5;
+ }
+ if (m_pOutput) {
+ m_pOutput[m_OutPos] = (uint8_t)code;
+ }
+ m_OutPos++;
+ last_char = (uint8_t)code;
+ if (old_code != (FX_DWORD)-1) {
+ AddCode(old_code, last_char);
+ }
+ old_code = code;
+ } else if (code == 256) {
+ m_CodeLen = 9;
+ m_nCodes = 0;
+ old_code = (FX_DWORD)-1;
+ } else if (code == 257) {
+ break;
+ } else {
+ if (old_code == (FX_DWORD)-1) {
+ return 2;
+ }
+ m_StackLen = 0;
+ if (code >= m_nCodes + 258) {
+ if (m_StackLen < sizeof(m_DecodeStack)) {
+ m_DecodeStack[m_StackLen++] = last_char;
+ }
+ DecodeString(old_code);
+ } else {
+ DecodeString(code);
+ }
+ if (m_OutPos + m_StackLen > dest_size) {
+ return -5;
+ }
+ if (m_pOutput) {
+ for (FX_DWORD i = 0; i < m_StackLen; i++) {
+ m_pOutput[m_OutPos + i] = m_DecodeStack[m_StackLen - i - 1];
+ }
+ }
+ m_OutPos += m_StackLen;
+ last_char = m_DecodeStack[m_StackLen - 1];
+ if (old_code < 256) {
+ AddCode(old_code, last_char);
+ } else if (old_code - 258 >= m_nCodes) {
+ dest_size = m_OutPos;
+ src_size = (m_InPos + 7) / 8;
+ return 0;
+ } else {
+ AddCode(old_code, last_char);
+ }
+ old_code = code;
+ }
+ }
+ dest_size = m_OutPos;
+ src_size = (m_InPos + 7) / 8;
+ return 0;
+}
+
+uint8_t PaethPredictor(int a, int b, int c) {
+ int p = a + b - c;
+ int pa = FXSYS_abs(p - a);
+ int pb = FXSYS_abs(p - b);
+ int pc = FXSYS_abs(p - c);
+ if (pa <= pb && pa <= pc) {
+ return (uint8_t)a;
+ }
+ if (pb <= pc) {
+ return (uint8_t)b;
+ }
+ return (uint8_t)c;
+}
+
+FX_BOOL PNG_PredictorEncode(uint8_t*& data_buf,
+ FX_DWORD& data_size,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns) {
+ const int BytesPerPixel = (Colors * BitsPerComponent + 7) / 8;
+ const int row_size = (Colors * BitsPerComponent * Columns + 7) / 8;
+ if (row_size <= 0)
+ return FALSE;
+ const int row_count = (data_size + row_size - 1) / row_size;
+ const int last_row_size = data_size % row_size;
+ uint8_t* dest_buf = FX_Alloc2D(uint8_t, row_size + 1, row_count);
+ int byte_cnt = 0;
+ uint8_t* pSrcData = data_buf;
+ uint8_t* pDestData = dest_buf;
+ for (int row = 0; row < row_count; row++) {
+ if (predictor == 10) {
+ pDestData[0] = 0;
+ int move_size = row_size;
+ if (move_size * (row + 1) > (int)data_size) {
+ move_size = data_size - (move_size * row);
+ }
+ FXSYS_memmove(pDestData + 1, pSrcData, move_size);
+ pDestData += (move_size + 1);
+ pSrcData += move_size;
+ byte_cnt += move_size;
+ continue;
+ }
+ for (int byte = 0; byte < row_size && byte_cnt < (int)data_size; byte++) {
+ switch (predictor) {
+ case 11: {
+ pDestData[0] = 1;
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pSrcData[byte - BytesPerPixel];
+ }
+ pDestData[byte + 1] = pSrcData[byte] - left;
+ } break;
+ case 12: {
+ pDestData[0] = 2;
+ uint8_t up = 0;
+ if (row) {
+ up = pSrcData[byte - row_size];
+ }
+ pDestData[byte + 1] = pSrcData[byte] - up;
+ } break;
+ case 13: {
+ pDestData[0] = 3;
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pSrcData[byte - BytesPerPixel];
+ }
+ uint8_t up = 0;
+ if (row) {
+ up = pSrcData[byte - row_size];
+ }
+ pDestData[byte + 1] = pSrcData[byte] - (left + up) / 2;
+ } break;
+ case 14: {
+ pDestData[0] = 4;
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pSrcData[byte - BytesPerPixel];
+ }
+ uint8_t up = 0;
+ if (row) {
+ up = pSrcData[byte - row_size];
+ }
+ uint8_t upper_left = 0;
+ if (byte >= BytesPerPixel && row) {
+ upper_left = pSrcData[byte - row_size - BytesPerPixel];
+ }
+ pDestData[byte + 1] =
+ pSrcData[byte] - PaethPredictor(left, up, upper_left);
+ } break;
+ default: { pDestData[byte + 1] = pSrcData[byte]; } break;
+ }
+ byte_cnt++;
+ }
+ pDestData += (row_size + 1);
+ pSrcData += row_size;
+ }
+ FX_Free(data_buf);
+ data_buf = dest_buf;
+ data_size = (row_size + 1) * row_count -
+ (last_row_size > 0 ? (row_size - last_row_size) : 0);
+ return TRUE;
+}
+
+void PNG_PredictLine(uint8_t* pDestData,
+ const uint8_t* pSrcData,
+ const uint8_t* pLastLine,
+ int bpc,
+ int nColors,
+ int nPixels) {
+ int row_size = (nPixels * bpc * nColors + 7) / 8;
+ int BytesPerPixel = (bpc * nColors + 7) / 8;
+ uint8_t tag = pSrcData[0];
+ if (tag == 0) {
+ FXSYS_memmove(pDestData, pSrcData + 1, row_size);
+ return;
+ }
+ for (int byte = 0; byte < row_size; byte++) {
+ uint8_t raw_byte = pSrcData[byte + 1];
+ switch (tag) {
+ case 1: {
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pDestData[byte - BytesPerPixel];
+ }
+ pDestData[byte] = raw_byte + left;
+ break;
+ }
+ case 2: {
+ uint8_t up = 0;
+ if (pLastLine) {
+ up = pLastLine[byte];
+ }
+ pDestData[byte] = raw_byte + up;
+ break;
+ }
+ case 3: {
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pDestData[byte - BytesPerPixel];
+ }
+ uint8_t up = 0;
+ if (pLastLine) {
+ up = pLastLine[byte];
+ }
+ pDestData[byte] = raw_byte + (up + left) / 2;
+ break;
+ }
+ case 4: {
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pDestData[byte - BytesPerPixel];
+ }
+ uint8_t up = 0;
+ if (pLastLine) {
+ up = pLastLine[byte];
+ }
+ uint8_t upper_left = 0;
+ if (byte >= BytesPerPixel && pLastLine) {
+ upper_left = pLastLine[byte - BytesPerPixel];
+ }
+ pDestData[byte] = raw_byte + PaethPredictor(left, up, upper_left);
+ break;
+ }
+ default:
+ pDestData[byte] = raw_byte;
+ break;
+ }
+ }
+}
+
+FX_BOOL PNG_Predictor(uint8_t*& data_buf,
+ FX_DWORD& data_size,
+ int Colors,
+ int BitsPerComponent,
+ int Columns) {
+ const int BytesPerPixel = (Colors * BitsPerComponent + 7) / 8;
+ const int row_size = (Colors * BitsPerComponent * Columns + 7) / 8;
+ if (row_size <= 0)
+ return FALSE;
+ const int row_count = (data_size + row_size) / (row_size + 1);
+ if (row_count <= 0)
+ return FALSE;
+ const int last_row_size = data_size % (row_size + 1);
+ uint8_t* dest_buf = FX_Alloc2D(uint8_t, row_size, row_count);
+ int byte_cnt = 0;
+ uint8_t* pSrcData = data_buf;
+ uint8_t* pDestData = dest_buf;
+ for (int row = 0; row < row_count; row++) {
+ uint8_t tag = pSrcData[0];
+ byte_cnt++;
+ if (tag == 0) {
+ int move_size = row_size;
+ if ((row + 1) * (move_size + 1) > (int)data_size) {
+ move_size = last_row_size - 1;
+ }
+ FXSYS_memmove(pDestData, pSrcData + 1, move_size);
+ pSrcData += move_size + 1;
+ pDestData += move_size;
+ byte_cnt += move_size;
+ continue;
+ }
+ for (int byte = 0; byte < row_size && byte_cnt < (int)data_size; byte++) {
+ uint8_t raw_byte = pSrcData[byte + 1];
+ switch (tag) {
+ case 1: {
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pDestData[byte - BytesPerPixel];
+ }
+ pDestData[byte] = raw_byte + left;
+ break;
+ }
+ case 2: {
+ uint8_t up = 0;
+ if (row) {
+ up = pDestData[byte - row_size];
+ }
+ pDestData[byte] = raw_byte + up;
+ break;
+ }
+ case 3: {
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pDestData[byte - BytesPerPixel];
+ }
+ uint8_t up = 0;
+ if (row) {
+ up = pDestData[byte - row_size];
+ }
+ pDestData[byte] = raw_byte + (up + left) / 2;
+ break;
+ }
+ case 4: {
+ uint8_t left = 0;
+ if (byte >= BytesPerPixel) {
+ left = pDestData[byte - BytesPerPixel];
+ }
+ uint8_t up = 0;
+ if (row) {
+ up = pDestData[byte - row_size];
+ }
+ uint8_t upper_left = 0;
+ if (byte >= BytesPerPixel && row) {
+ upper_left = pDestData[byte - row_size - BytesPerPixel];
+ }
+ pDestData[byte] = raw_byte + PaethPredictor(left, up, upper_left);
+ break;
+ }
+ default:
+ pDestData[byte] = raw_byte;
+ break;
+ }
+ byte_cnt++;
+ }
+ pSrcData += row_size + 1;
+ pDestData += row_size;
+ }
+ FX_Free(data_buf);
+ data_buf = dest_buf;
+ data_size = row_size * row_count -
+ (last_row_size > 0 ? (row_size + 1 - last_row_size) : 0);
+ return TRUE;
+}
+
+void TIFF_PredictorEncodeLine(uint8_t* dest_buf,
+ int row_size,
+ int BitsPerComponent,
+ int Colors,
+ int Columns) {
+ int BytesPerPixel = BitsPerComponent * Colors / 8;
+ if (BitsPerComponent < 8) {
+ uint8_t mask = 0x01;
+ if (BitsPerComponent == 2) {
+ mask = 0x03;
+ } else if (BitsPerComponent == 4) {
+ mask = 0x0F;
+ }
+ int row_bits = Colors * BitsPerComponent * Columns;
+ for (int i = row_bits - BitsPerComponent; i >= BitsPerComponent;
+ i -= BitsPerComponent) {
+ int col = i % 8;
+ int index = i / 8;
+ int col_pre =
+ (col == 0) ? (8 - BitsPerComponent) : (col - BitsPerComponent);
+ int index_pre = (col == 0) ? (index - 1) : index;
+ uint8_t cur = (dest_buf[index] >> (8 - col - BitsPerComponent)) & mask;
+ uint8_t left =
+ (dest_buf[index_pre] >> (8 - col_pre - BitsPerComponent)) & mask;
+ cur -= left;
+ cur &= mask;
+ cur <<= (8 - col - BitsPerComponent);
+ dest_buf[index] &= ~(mask << ((8 - col - BitsPerComponent)));
+ dest_buf[index] |= cur;
+ }
+ } else if (BitsPerComponent == 8) {
+ for (int i = row_size - 1; i >= BytesPerPixel; i--) {
+ dest_buf[i] -= dest_buf[i - BytesPerPixel];
+ }
+ } else {
+ for (int i = row_size - BytesPerPixel; i >= BytesPerPixel;
+ i -= BytesPerPixel) {
+ FX_WORD pixel = (dest_buf[i] << 8) | dest_buf[i + 1];
+ pixel -=
+ (dest_buf[i - BytesPerPixel] << 8) | dest_buf[i - BytesPerPixel + 1];
+ dest_buf[i] = pixel >> 8;
+ dest_buf[i + 1] = (uint8_t)pixel;
+ }
+ }
+}
+
+FX_BOOL TIFF_PredictorEncode(uint8_t*& data_buf,
+ FX_DWORD& data_size,
+ int Colors,
+ int BitsPerComponent,
+ int Columns) {
+ int row_size = (Colors * BitsPerComponent * Columns + 7) / 8;
+ if (row_size == 0)
+ return FALSE;
+ const int row_count = (data_size + row_size - 1) / row_size;
+ const int last_row_size = data_size % row_size;
+ for (int row = 0; row < row_count; row++) {
+ uint8_t* scan_line = data_buf + row * row_size;
+ if ((row + 1) * row_size > (int)data_size) {
+ row_size = last_row_size;
+ }
+ TIFF_PredictorEncodeLine(scan_line, row_size, BitsPerComponent, Colors,
+ Columns);
+ }
+ return TRUE;
+}
+
+void TIFF_PredictLine(uint8_t* dest_buf,
+ FX_DWORD row_size,
+ int BitsPerComponent,
+ int Colors,
+ int Columns) {
+ if (BitsPerComponent == 1) {
+ int row_bits = std::min(BitsPerComponent * Colors * Columns,
+ pdfium::base::checked_cast<int>(row_size * 8));
+ int index_pre = 0;
+ int col_pre = 0;
+ for (int i = 1; i < row_bits; i++) {
+ int col = i % 8;
+ int index = i / 8;
+ if (((dest_buf[index] >> (7 - col)) & 1) ^
+ ((dest_buf[index_pre] >> (7 - col_pre)) & 1)) {
+ dest_buf[index] |= 1 << (7 - col);
+ } else {
+ dest_buf[index] &= ~(1 << (7 - col));
+ }
+ index_pre = index;
+ col_pre = col;
+ }
+ return;
+ }
+ int BytesPerPixel = BitsPerComponent * Colors / 8;
+ if (BitsPerComponent == 16) {
+ for (FX_DWORD i = BytesPerPixel; i < row_size; i += 2) {
+ FX_WORD pixel =
+ (dest_buf[i - BytesPerPixel] << 8) | dest_buf[i - BytesPerPixel + 1];
+ pixel += (dest_buf[i] << 8) | dest_buf[i + 1];
+ dest_buf[i] = pixel >> 8;
+ dest_buf[i + 1] = (uint8_t)pixel;
+ }
+ } else {
+ for (FX_DWORD i = BytesPerPixel; i < row_size; i++) {
+ dest_buf[i] += dest_buf[i - BytesPerPixel];
+ }
+ }
+}
+
+FX_BOOL TIFF_Predictor(uint8_t*& data_buf,
+ FX_DWORD& data_size,
+ int Colors,
+ int BitsPerComponent,
+ int Columns) {
+ int row_size = (Colors * BitsPerComponent * Columns + 7) / 8;
+ if (row_size == 0)
+ return FALSE;
+ const int row_count = (data_size + row_size - 1) / row_size;
+ const int last_row_size = data_size % row_size;
+ for (int row = 0; row < row_count; row++) {
+ uint8_t* scan_line = data_buf + row * row_size;
+ if ((row + 1) * row_size > (int)data_size) {
+ row_size = last_row_size;
+ }
+ TIFF_PredictLine(scan_line, row_size, BitsPerComponent, Colors, Columns);
+ }
+ return TRUE;
+}
+
+void FlateUncompress(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ FX_DWORD orig_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size,
+ FX_DWORD& offset) {
+ FX_DWORD guess_size = orig_size ? orig_size : src_size * 2;
+ const FX_DWORD kStepSize = 10240;
+ FX_DWORD alloc_step = orig_size ? kStepSize : std::min(src_size, kStepSize);
+ static const FX_DWORD kMaxInitialAllocSize = 10000000;
+ if (guess_size > kMaxInitialAllocSize) {
+ guess_size = kMaxInitialAllocSize;
+ alloc_step = kMaxInitialAllocSize;
+ }
+ FX_DWORD buf_size = guess_size;
+ FX_DWORD last_buf_size = buf_size;
+
+ dest_buf = nullptr;
+ dest_size = 0;
+ void* context = FPDFAPI_FlateInit(my_alloc_func, my_free_func);
+ if (!context)
+ return;
+
+ std::unique_ptr<uint8_t, FxFreeDeleter> guess_buf(
+ FX_Alloc(uint8_t, guess_size + 1));
+ guess_buf.get()[guess_size] = '\0';
+
+ FPDFAPI_FlateInput(context, src_buf, src_size);
+
+ if (src_size < kStepSize) {
+ // This is the old implementation.
+ uint8_t* cur_buf = guess_buf.get();
+ while (1) {
+ int32_t ret = FPDFAPI_FlateOutput(context, cur_buf, buf_size);
+ if (ret != Z_OK)
+ break;
+ int32_t avail_buf_size = FPDFAPI_FlateGetAvailOut(context);
+ if (avail_buf_size != 0)
+ break;
+
+ FX_DWORD old_size = guess_size;
+ guess_size += alloc_step;
+ if (guess_size < old_size || guess_size + 1 < guess_size) {
+ FPDFAPI_FlateEnd(context);
+ return;
+ }
+
+ {
+ uint8_t* new_buf =
+ FX_Realloc(uint8_t, guess_buf.release(), guess_size + 1);
+ guess_buf.reset(new_buf);
+ }
+ guess_buf.get()[guess_size] = '\0';
+ cur_buf = guess_buf.get() + old_size;
+ buf_size = guess_size - old_size;
+ }
+ dest_size = FPDFAPI_FlateGetTotalOut(context);
+ offset = FPDFAPI_FlateGetTotalIn(context);
+ if (guess_size / 2 > dest_size) {
+ {
+ uint8_t* new_buf =
+ FX_Realloc(uint8_t, guess_buf.release(), dest_size + 1);
+ guess_buf.reset(new_buf);
+ }
+ guess_size = dest_size;
+ guess_buf.get()[guess_size] = '\0';
+ }
+ dest_buf = guess_buf.release();
+ } else {
+ CFX_ArrayTemplate<uint8_t*> result_tmp_bufs;
+ uint8_t* cur_buf = guess_buf.release();
+ while (1) {
+ int32_t ret = FPDFAPI_FlateOutput(context, cur_buf, buf_size);
+ int32_t avail_buf_size = FPDFAPI_FlateGetAvailOut(context);
+ if (ret != Z_OK) {
+ last_buf_size = buf_size - avail_buf_size;
+ result_tmp_bufs.Add(cur_buf);
+ break;
+ }
+ if (avail_buf_size != 0) {
+ last_buf_size = buf_size - avail_buf_size;
+ result_tmp_bufs.Add(cur_buf);
+ break;
+ }
+
+ result_tmp_bufs.Add(cur_buf);
+ cur_buf = FX_Alloc(uint8_t, buf_size + 1);
+ cur_buf[buf_size] = '\0';
+ }
+ dest_size = FPDFAPI_FlateGetTotalOut(context);
+ offset = FPDFAPI_FlateGetTotalIn(context);
+ if (result_tmp_bufs.GetSize() == 1) {
+ dest_buf = result_tmp_bufs[0];
+ } else {
+ uint8_t* result_buf = FX_Alloc(uint8_t, dest_size);
+ FX_DWORD result_pos = 0;
+ for (int32_t i = 0; i < result_tmp_bufs.GetSize(); i++) {
+ uint8_t* tmp_buf = result_tmp_bufs[i];
+ FX_DWORD tmp_buf_size = buf_size;
+ if (i == result_tmp_bufs.GetSize() - 1) {
+ tmp_buf_size = last_buf_size;
+ }
+ FXSYS_memcpy(result_buf + result_pos, tmp_buf, tmp_buf_size);
+ result_pos += tmp_buf_size;
+ FX_Free(result_tmp_bufs[i]);
+ }
+ dest_buf = result_buf;
+ }
+ }
+ FPDFAPI_FlateEnd(context);
+}
+
+} // namespace
+
+class CCodec_FlateScanlineDecoder : public CCodec_ScanlineDecoder {
+ public:
+ CCodec_FlateScanlineDecoder();
+ ~CCodec_FlateScanlineDecoder() override;
+
+ void Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns);
+ void Destroy() { delete this; }
+
+ // CCodec_ScanlineDecoder
+ void v_DownScale(int dest_width, int dest_height) override {}
+ FX_BOOL v_Rewind() override;
+ uint8_t* v_GetNextLine() override;
+ FX_DWORD GetSrcOffset() override;
+
+ void* m_pFlate;
+ const uint8_t* m_SrcBuf;
+ FX_DWORD m_SrcSize;
+ uint8_t* m_pScanline;
+ uint8_t* m_pLastLine;
+ uint8_t* m_pPredictBuffer;
+ uint8_t* m_pPredictRaw;
+ int m_Predictor;
+ int m_Colors;
+ int m_BitsPerComponent;
+ int m_Columns;
+ FX_DWORD m_PredictPitch;
+ size_t m_LeftOver;
+};
+
+CCodec_FlateScanlineDecoder::CCodec_FlateScanlineDecoder() {
+ m_pFlate = NULL;
+ m_pScanline = NULL;
+ m_pLastLine = NULL;
+ m_pPredictBuffer = NULL;
+ m_pPredictRaw = NULL;
+ m_LeftOver = 0;
+}
+CCodec_FlateScanlineDecoder::~CCodec_FlateScanlineDecoder() {
+ FX_Free(m_pScanline);
+ FX_Free(m_pLastLine);
+ FX_Free(m_pPredictBuffer);
+ FX_Free(m_pPredictRaw);
+ if (m_pFlate) {
+ FPDFAPI_FlateEnd(m_pFlate);
+ }
+}
+void CCodec_FlateScanlineDecoder::Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns) {
+ m_SrcBuf = src_buf;
+ m_SrcSize = src_size;
+ m_OutputWidth = m_OrigWidth = width;
+ m_OutputHeight = m_OrigHeight = height;
+ m_nComps = nComps;
+ m_bpc = bpc;
+ m_bColorTransformed = FALSE;
+ m_Pitch = (static_cast<FX_DWORD>(width) * nComps * bpc + 7) / 8;
+ m_pScanline = FX_Alloc(uint8_t, m_Pitch);
+ m_Predictor = 0;
+ if (predictor) {
+ if (predictor >= 10) {
+ m_Predictor = 2;
+ } else if (predictor == 2) {
+ m_Predictor = 1;
+ }
+ if (m_Predictor) {
+ if (BitsPerComponent * Colors * Columns == 0) {
+ BitsPerComponent = m_bpc;
+ Colors = m_nComps;
+ Columns = m_OrigWidth;
+ }
+ m_Colors = Colors;
+ m_BitsPerComponent = BitsPerComponent;
+ m_Columns = Columns;
+ m_PredictPitch =
+ (static_cast<FX_DWORD>(m_BitsPerComponent) * m_Colors * m_Columns +
+ 7) /
+ 8;
+ m_pLastLine = FX_Alloc(uint8_t, m_PredictPitch);
+ m_pPredictRaw = FX_Alloc(uint8_t, m_PredictPitch + 1);
+ m_pPredictBuffer = FX_Alloc(uint8_t, m_PredictPitch);
+ }
+ }
+}
+FX_BOOL CCodec_FlateScanlineDecoder::v_Rewind() {
+ if (m_pFlate) {
+ FPDFAPI_FlateEnd(m_pFlate);
+ }
+ m_pFlate = FPDFAPI_FlateInit(my_alloc_func, my_free_func);
+ if (!m_pFlate) {
+ return FALSE;
+ }
+ FPDFAPI_FlateInput(m_pFlate, m_SrcBuf, m_SrcSize);
+ m_LeftOver = 0;
+ return TRUE;
+}
+uint8_t* CCodec_FlateScanlineDecoder::v_GetNextLine() {
+ if (m_Predictor) {
+ if (m_Pitch == m_PredictPitch) {
+ if (m_Predictor == 2) {
+ FPDFAPI_FlateOutput(m_pFlate, m_pPredictRaw, m_PredictPitch + 1);
+ PNG_PredictLine(m_pScanline, m_pPredictRaw, m_pLastLine,
+ m_BitsPerComponent, m_Colors, m_Columns);
+ FXSYS_memcpy(m_pLastLine, m_pScanline, m_PredictPitch);
+ } else {
+ FPDFAPI_FlateOutput(m_pFlate, m_pScanline, m_Pitch);
+ TIFF_PredictLine(m_pScanline, m_PredictPitch, m_bpc, m_nComps,
+ m_OutputWidth);
+ }
+ } else {
+ size_t bytes_to_go = m_Pitch;
+ size_t read_leftover =
+ m_LeftOver > bytes_to_go ? bytes_to_go : m_LeftOver;
+ if (read_leftover) {
+ FXSYS_memcpy(m_pScanline,
+ m_pPredictBuffer + m_PredictPitch - m_LeftOver,
+ read_leftover);
+ m_LeftOver -= read_leftover;
+ bytes_to_go -= read_leftover;
+ }
+ while (bytes_to_go) {
+ if (m_Predictor == 2) {
+ FPDFAPI_FlateOutput(m_pFlate, m_pPredictRaw, m_PredictPitch + 1);
+ PNG_PredictLine(m_pPredictBuffer, m_pPredictRaw, m_pLastLine,
+ m_BitsPerComponent, m_Colors, m_Columns);
+ FXSYS_memcpy(m_pLastLine, m_pPredictBuffer, m_PredictPitch);
+ } else {
+ FPDFAPI_FlateOutput(m_pFlate, m_pPredictBuffer, m_PredictPitch);
+ TIFF_PredictLine(m_pPredictBuffer, m_PredictPitch, m_BitsPerComponent,
+ m_Colors, m_Columns);
+ }
+ size_t read_bytes =
+ m_PredictPitch > bytes_to_go ? bytes_to_go : m_PredictPitch;
+ FXSYS_memcpy(m_pScanline + m_Pitch - bytes_to_go, m_pPredictBuffer,
+ read_bytes);
+ m_LeftOver += m_PredictPitch - read_bytes;
+ bytes_to_go -= read_bytes;
+ }
+ }
+ } else {
+ FPDFAPI_FlateOutput(m_pFlate, m_pScanline, m_Pitch);
+ }
+ return m_pScanline;
+}
+FX_DWORD CCodec_FlateScanlineDecoder::GetSrcOffset() {
+ return FPDFAPI_FlateGetTotalIn(m_pFlate);
+}
+
+ICodec_ScanlineDecoder* CCodec_FlateModule::CreateDecoder(
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns) {
+ CCodec_FlateScanlineDecoder* pDecoder = new CCodec_FlateScanlineDecoder;
+ pDecoder->Create(src_buf, src_size, width, height, nComps, bpc, predictor,
+ Colors, BitsPerComponent, Columns);
+ return pDecoder;
+}
+FX_DWORD CCodec_FlateModule::FlateOrLZWDecode(FX_BOOL bLZW,
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ FX_BOOL bEarlyChange,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns,
+ FX_DWORD estimated_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) {
+ dest_buf = NULL;
+ FX_DWORD offset = 0;
+ int predictor_type = 0;
+ if (predictor) {
+ if (predictor >= 10) {
+ predictor_type = 2;
+ } else if (predictor == 2) {
+ predictor_type = 1;
+ }
+ }
+ if (bLZW) {
+ {
+ std::unique_ptr<CLZWDecoder> decoder(new CLZWDecoder);
+ dest_size = (FX_DWORD)-1;
+ offset = src_size;
+ int err = decoder->Decode(NULL, dest_size, src_buf, offset, bEarlyChange);
+ if (err || dest_size == 0 || dest_size + 1 < dest_size) {
+ return -1;
+ }
+ }
+ {
+ std::unique_ptr<CLZWDecoder> decoder(new CLZWDecoder);
+ dest_buf = FX_Alloc(uint8_t, dest_size + 1);
+ dest_buf[dest_size] = '\0';
+ decoder->Decode(dest_buf, dest_size, src_buf, offset, bEarlyChange);
+ }
+ } else {
+ FlateUncompress(src_buf, src_size, estimated_size, dest_buf, dest_size,
+ offset);
+ }
+ if (predictor_type == 0) {
+ return offset;
+ }
+ FX_BOOL ret = TRUE;
+ if (predictor_type == 2) {
+ ret = PNG_Predictor(dest_buf, dest_size, Colors, BitsPerComponent, Columns);
+ } else if (predictor_type == 1) {
+ ret =
+ TIFF_Predictor(dest_buf, dest_size, Colors, BitsPerComponent, Columns);
+ }
+ return ret ? offset : -1;
+}
+FX_BOOL CCodec_FlateModule::Encode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int predictor,
+ int Colors,
+ int BitsPerComponent,
+ int Columns,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) {
+ if (predictor != 2 && predictor < 10) {
+ return Encode(src_buf, src_size, dest_buf, dest_size);
+ }
+ uint8_t* pSrcBuf = NULL;
+ pSrcBuf = FX_Alloc(uint8_t, src_size);
+ FXSYS_memcpy(pSrcBuf, src_buf, src_size);
+ FX_BOOL ret = TRUE;
+ if (predictor == 2) {
+ ret = TIFF_PredictorEncode(pSrcBuf, src_size, Colors, BitsPerComponent,
+ Columns);
+ } else if (predictor >= 10) {
+ ret = PNG_PredictorEncode(pSrcBuf, src_size, predictor, Colors,
+ BitsPerComponent, Columns);
+ }
+ if (ret)
+ ret = Encode(pSrcBuf, src_size, dest_buf, dest_size);
+ FX_Free(pSrcBuf);
+ return ret;
+}
+FX_BOOL CCodec_FlateModule::Encode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) {
+ dest_size = src_size + src_size / 1000 + 12;
+ dest_buf = FX_Alloc(uint8_t, dest_size);
+ unsigned long temp_size = dest_size;
+ FPDFAPI_FlateCompress(dest_buf, &temp_size, src_buf, src_size);
+ dest_size = (FX_DWORD)temp_size;
+ return TRUE;
+}
diff --git a/core/fxcodec/codec/fx_codec_gif.cpp b/core/fxcodec/codec/fx_codec_gif.cpp
new file mode 100644
index 0000000..60ca00f
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_gif.cpp
@@ -0,0 +1,187 @@
+// 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 "core/fxcodec/codec/codec_int.h"
+#include "core/fxcodec/lgif/fx_gif.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxge/fx_dib.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) {
+ FX_Free(p);
+}
+};
+static void gif_error_data(gif_decompress_struct_p gif_ptr,
+ const FX_CHAR* err_msg) {
+ FXSYS_strncpy((char*)gif_ptr->err_ptr, err_msg, GIF_MAX_ERROR_SIZE - 1);
+ longjmp(gif_ptr->jmpbuf, 1);
+}
+static uint8_t* gif_ask_buf_for_pal(gif_decompress_struct_p gif_ptr,
+ int32_t 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,
+ int32_t row_num,
+ uint8_t* 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,
+ int32_t left,
+ int32_t top,
+ int32_t width,
+ int32_t height,
+ int32_t pal_num,
+ void* pal_ptr,
+ int32_t delay_time,
+ FX_BOOL user_input,
+ int32_t trans_index,
+ int32_t 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(uint8_t, sizeof(FXGIF_Context));
+ if (p == NULL) {
+ return NULL;
+ }
+ FXSYS_memset(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) {
+ gif_destroy_decompress(&p->gif_ptr);
+ p->m_FreeFunc(p);
+ }
+}
+int32_t 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;
+ }
+ int32_t 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;
+}
+int32_t CCodec_GifModule::LoadFrameInfo(void* pContext, int* frame_num) {
+ FXGIF_Context* p = (FXGIF_Context*)pContext;
+ if (setjmp(p->gif_ptr->jmpbuf)) {
+ return 0;
+ }
+ int32_t ret = gif_get_frame(p->gif_ptr);
+ if (ret != 1) {
+ return ret;
+ }
+ *frame_num = gif_get_frame_num(p->gif_ptr);
+ return 1;
+}
+int32_t 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;
+ }
+ int32_t 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) {
+ const uint8_t* buf =
+ (const uint8_t*)p->gif_ptr->cmt_data_ptr->GetBuffer(0);
+ FX_DWORD len = p->gif_ptr->cmt_data_ptr->GetLength();
+ if (len > 21) {
+ uint8_t size = *buf++;
+ if (size) {
+ pAttribute->m_strAuthor = CFX_ByteString(buf, size);
+ } else {
+ pAttribute->m_strAuthor.Empty();
+ }
+ buf += size;
+ size = *buf++;
+ if (size == 20) {
+ FXSYS_memcpy(pAttribute->m_strTime, buf, size);
+ }
+ }
+ }
+ }
+ }
+ return ret;
+}
+FX_DWORD CCodec_GifModule::GetAvailInput(void* pContext,
+ uint8_t** 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,
+ const uint8_t* src_buf,
+ FX_DWORD src_size) {
+ FXGIF_Context* p = (FXGIF_Context*)pContext;
+ gif_input_buffer(p->gif_ptr, (uint8_t*)src_buf, src_size);
+}
diff --git a/core/fxcodec/codec/fx_codec_icc.cpp b/core/fxcodec/codec/fx_codec_icc.cpp
new file mode 100644
index 0000000..fc8113e
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_icc.cpp
@@ -0,0 +1,1986 @@
+// 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 "core/fxcodec/codec/codec_int.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "third_party/lcms2-2.6/include/lcms2.h"
+
+const FX_DWORD N_COMPONENT_LAB = 3;
+const FX_DWORD N_COMPONENT_GRAY = 1;
+const FX_DWORD N_COMPONENT_RGB = 3;
+const FX_DWORD N_COMPONENT_CMYK = 4;
+const FX_DWORD N_COMPONENT_DEFAULT = 3;
+
+FX_BOOL MD5ComputeID(const void* buf, FX_DWORD dwSize, uint8_t ID[16]) {
+ return cmsMD5computeIDExt(buf, dwSize, ID);
+}
+struct CLcmsCmm {
+ cmsHTRANSFORM m_hTransform;
+ int m_nSrcComponents;
+ int m_nDstComponents;
+ FX_BOOL m_bLab;
+};
+extern "C" {
+int ourHandler(int ErrorCode, const char* ErrorText) {
+ return TRUE;
+}
+};
+FX_BOOL CheckComponents(cmsColorSpaceSignature cs,
+ int nComponents,
+ FX_BOOL bDst) {
+ if (nComponents <= 0 || nComponents > 15) {
+ return FALSE;
+ }
+ switch (cs) {
+ case cmsSigLabData:
+ if (nComponents < 3) {
+ return FALSE;
+ }
+ break;
+ case cmsSigGrayData:
+ if (bDst && nComponents != 1) {
+ return FALSE;
+ }
+ if (!bDst && nComponents > 2) {
+ return FALSE;
+ }
+ break;
+ case cmsSigRgbData:
+ if (bDst && nComponents != 3) {
+ return FALSE;
+ }
+ break;
+ case cmsSigCmykData:
+ if (bDst && nComponents != 4) {
+ return FALSE;
+ }
+ break;
+ default:
+ if (nComponents != 3) {
+ return FALSE;
+ }
+ break;
+ }
+ return TRUE;
+}
+
+FX_DWORD GetCSComponents(cmsColorSpaceSignature cs) {
+ FX_DWORD components;
+ switch (cs) {
+ case cmsSigLabData:
+ components = N_COMPONENT_LAB;
+ break;
+ case cmsSigGrayData:
+ components = N_COMPONENT_GRAY;
+ break;
+ case cmsSigRgbData:
+ components = N_COMPONENT_RGB;
+ break;
+ case cmsSigCmykData:
+ components = N_COMPONENT_CMYK;
+ break;
+ default:
+ components = N_COMPONENT_DEFAULT;
+ break;
+ }
+ return components;
+}
+
+void* IccLib_CreateTransform(const unsigned char* pSrcProfileData,
+ FX_DWORD dwSrcProfileSize,
+ FX_DWORD& nSrcComponents,
+ const unsigned char* pDstProfileData,
+ FX_DWORD dwDstProfileSize,
+ int32_t nDstComponents,
+ int intent,
+ FX_DWORD dwSrcFormat = Icc_FORMAT_DEFAULT,
+ FX_DWORD dwDstFormat = Icc_FORMAT_DEFAULT) {
+ cmsHPROFILE srcProfile = NULL;
+ cmsHPROFILE dstProfile = NULL;
+ cmsHTRANSFORM hTransform = NULL;
+ CLcmsCmm* pCmm = NULL;
+ nSrcComponents = 0;
+ srcProfile = cmsOpenProfileFromMem((void*)pSrcProfileData, dwSrcProfileSize);
+ if (!srcProfile) {
+ return NULL;
+ }
+ if (!pDstProfileData && dwDstProfileSize == 0 && nDstComponents == 3) {
+ dstProfile = cmsCreate_sRGBProfile();
+ } else {
+ dstProfile =
+ cmsOpenProfileFromMem((void*)pDstProfileData, dwDstProfileSize);
+ }
+ if (!dstProfile) {
+ cmsCloseProfile(srcProfile);
+ return NULL;
+ }
+ int srcFormat;
+ FX_BOOL bLab = FALSE;
+ cmsColorSpaceSignature srcCS = cmsGetColorSpace(srcProfile);
+ nSrcComponents = GetCSComponents(srcCS);
+ if (srcCS == cmsSigLabData) {
+ srcFormat =
+ COLORSPACE_SH(PT_Lab) | CHANNELS_SH(nSrcComponents) | BYTES_SH(0);
+ bLab = TRUE;
+ } else {
+ srcFormat =
+ COLORSPACE_SH(PT_ANY) | CHANNELS_SH(nSrcComponents) | BYTES_SH(1);
+ if (srcCS == cmsSigRgbData && T_DOSWAP(dwSrcFormat)) {
+ srcFormat |= DOSWAP_SH(1);
+ }
+ }
+ cmsColorSpaceSignature dstCS = cmsGetColorSpace(dstProfile);
+ if (!CheckComponents(dstCS, nDstComponents, TRUE)) {
+ cmsCloseProfile(srcProfile);
+ cmsCloseProfile(dstProfile);
+ return NULL;
+ }
+ switch (dstCS) {
+ case cmsSigGrayData:
+ hTransform = cmsCreateTransform(srcProfile, srcFormat, dstProfile,
+ TYPE_GRAY_8, intent, 0);
+ break;
+ case cmsSigRgbData:
+ hTransform = cmsCreateTransform(srcProfile, srcFormat, dstProfile,
+ TYPE_BGR_8, intent, 0);
+ break;
+ case cmsSigCmykData:
+ hTransform = cmsCreateTransform(
+ srcProfile, srcFormat, dstProfile,
+ T_DOSWAP(dwDstFormat) ? TYPE_KYMC_8 : TYPE_CMYK_8, intent, 0);
+ break;
+ default:
+ break;
+ }
+ if (!hTransform) {
+ cmsCloseProfile(srcProfile);
+ cmsCloseProfile(dstProfile);
+ return NULL;
+ }
+ pCmm = new CLcmsCmm;
+ pCmm->m_nSrcComponents = nSrcComponents;
+ pCmm->m_nDstComponents = nDstComponents;
+ pCmm->m_hTransform = hTransform;
+ pCmm->m_bLab = bLab;
+ cmsCloseProfile(srcProfile);
+ cmsCloseProfile(dstProfile);
+ return pCmm;
+}
+void* IccLib_CreateTransform_sRGB(const unsigned char* pProfileData,
+ FX_DWORD dwProfileSize,
+ FX_DWORD& nComponents,
+ int32_t intent,
+ FX_DWORD dwSrcFormat) {
+ return IccLib_CreateTransform(pProfileData, dwProfileSize, nComponents, NULL,
+ 0, 3, intent, dwSrcFormat);
+}
+void IccLib_DestroyTransform(void* pTransform) {
+ if (!pTransform) {
+ return;
+ }
+ cmsDeleteTransform(((CLcmsCmm*)pTransform)->m_hTransform);
+ delete (CLcmsCmm*)pTransform;
+}
+void IccLib_Translate(void* pTransform,
+ FX_DWORD nSrcComponents,
+ FX_FLOAT* pSrcValues,
+ FX_FLOAT* pDestValues) {
+ if (!pTransform) {
+ return;
+ }
+ CLcmsCmm* p = (CLcmsCmm*)pTransform;
+ uint8_t output[4];
+ if (p->m_bLab) {
+ CFX_FixedBufGrow<double, 16> inputs(nSrcComponents);
+ double* input = inputs;
+ for (FX_DWORD i = 0; i < nSrcComponents; i++) {
+ input[i] = pSrcValues[i];
+ }
+ cmsDoTransform(p->m_hTransform, input, output, 1);
+ } else {
+ CFX_FixedBufGrow<uint8_t, 16> inputs(nSrcComponents);
+ uint8_t* input = inputs;
+ for (FX_DWORD i = 0; i < nSrcComponents; i++) {
+ if (pSrcValues[i] > 1.0f) {
+ input[i] = 255;
+ } else if (pSrcValues[i] < 0) {
+ input[i] = 0;
+ } else {
+ input[i] = (int)(pSrcValues[i] * 255.0f);
+ }
+ }
+ cmsDoTransform(p->m_hTransform, input, output, 1);
+ }
+ switch (p->m_nDstComponents) {
+ case 1:
+ pDestValues[0] = output[0] / 255.0f;
+ break;
+ case 3:
+ pDestValues[0] = output[2] / 255.0f;
+ pDestValues[1] = output[1] / 255.0f;
+ pDestValues[2] = output[0] / 255.0f;
+ break;
+ case 4:
+ pDestValues[0] = output[0] / 255.0f;
+ pDestValues[1] = output[1] / 255.0f;
+ pDestValues[2] = output[2] / 255.0f;
+ pDestValues[3] = output[3] / 255.0f;
+ break;
+ }
+}
+void IccLib_TranslateImage(void* pTransform,
+ unsigned char* pDest,
+ const unsigned char* pSrc,
+ int32_t pixels) {
+ cmsDoTransform(((CLcmsCmm*)pTransform)->m_hTransform, (void*)pSrc, pDest,
+ pixels);
+}
+void* CreateProfile_Gray(double gamma) {
+ cmsCIExyY* D50 = (cmsCIExyY*)cmsD50_xyY();
+ if (!cmsWhitePointFromTemp(D50, 6504)) {
+ return NULL;
+ }
+ cmsToneCurve* curve = cmsBuildGamma(NULL, gamma);
+ if (!curve) {
+ return NULL;
+ }
+ void* profile = cmsCreateGrayProfile(D50, curve);
+ cmsFreeToneCurve(curve);
+ return profile;
+}
+ICodec_IccModule::IccCS GetProfileCSFromHandle(void* pProfile) {
+ if (!pProfile) {
+ return ICodec_IccModule::IccCS_Unknown;
+ }
+ switch (cmsGetColorSpace(pProfile)) {
+ case cmsSigXYZData:
+ return ICodec_IccModule::IccCS_XYZ;
+ case cmsSigLabData:
+ return ICodec_IccModule::IccCS_Lab;
+ case cmsSigLuvData:
+ return ICodec_IccModule::IccCS_Luv;
+ case cmsSigYCbCrData:
+ return ICodec_IccModule::IccCS_YCbCr;
+ case cmsSigYxyData:
+ return ICodec_IccModule::IccCS_Yxy;
+ case cmsSigRgbData:
+ return ICodec_IccModule::IccCS_Rgb;
+ case cmsSigGrayData:
+ return ICodec_IccModule::IccCS_Gray;
+ case cmsSigHsvData:
+ return ICodec_IccModule::IccCS_Hsv;
+ case cmsSigHlsData:
+ return ICodec_IccModule::IccCS_Hls;
+ case cmsSigCmykData:
+ return ICodec_IccModule::IccCS_Cmyk;
+ case cmsSigCmyData:
+ return ICodec_IccModule::IccCS_Cmy;
+ default:
+ return ICodec_IccModule::IccCS_Unknown;
+ }
+}
+ICodec_IccModule::IccCS CCodec_IccModule::GetProfileCS(
+ const uint8_t* pProfileData,
+ FX_DWORD dwProfileSize) {
+ ICodec_IccModule::IccCS cs;
+ cmsHPROFILE hProfile =
+ cmsOpenProfileFromMem((void*)pProfileData, dwProfileSize);
+ if (!hProfile) {
+ return IccCS_Unknown;
+ }
+ cs = GetProfileCSFromHandle(hProfile);
+ if (hProfile) {
+ cmsCloseProfile(hProfile);
+ }
+ return cs;
+}
+ICodec_IccModule::IccCS CCodec_IccModule::GetProfileCS(IFX_FileRead* pFile) {
+ if (!pFile) {
+ return IccCS_Unknown;
+ }
+ ICodec_IccModule::IccCS cs;
+ FX_DWORD dwSize = (FX_DWORD)pFile->GetSize();
+ uint8_t* pBuf = FX_Alloc(uint8_t, dwSize);
+ pFile->ReadBlock(pBuf, 0, dwSize);
+ cs = GetProfileCS(pBuf, dwSize);
+ FX_Free(pBuf);
+ return cs;
+}
+FX_DWORD TransferProfileType(void* pProfile, FX_DWORD dwFormat) {
+ cmsColorSpaceSignature cs = cmsGetColorSpace(pProfile);
+ switch (cs) {
+ case cmsSigXYZData:
+ return TYPE_XYZ_16;
+ case cmsSigLabData:
+ return TYPE_Lab_DBL;
+ case cmsSigLuvData:
+ return TYPE_YUV_8;
+ case cmsSigYCbCrData:
+ return TYPE_YCbCr_8;
+ case cmsSigYxyData:
+ return TYPE_Yxy_16;
+ case cmsSigRgbData:
+ return T_DOSWAP(dwFormat) ? TYPE_RGB_8 : TYPE_BGR_8;
+ case cmsSigGrayData:
+ return TYPE_GRAY_8;
+ case cmsSigHsvData:
+ return TYPE_HSV_8;
+ case cmsSigHlsData:
+ return TYPE_HLS_8;
+ case cmsSigCmykData:
+ return T_DOSWAP(dwFormat) ? TYPE_KYMC_8 : TYPE_CMYK_8;
+ case cmsSigCmyData:
+ return TYPE_CMY_8;
+ case cmsSigMCH5Data:
+ return T_DOSWAP(dwFormat) ? TYPE_KYMC5_8 : TYPE_CMYK5_8;
+ case cmsSigMCH6Data:
+ return TYPE_CMYK6_8;
+ case cmsSigMCH7Data:
+ return T_DOSWAP(dwFormat) ? TYPE_KYMC7_8 : TYPE_CMYK7_8;
+ case cmsSigMCH8Data:
+ return T_DOSWAP(dwFormat) ? TYPE_KYMC8_8 : TYPE_CMYK8_8;
+ case cmsSigMCH9Data:
+ return T_DOSWAP(dwFormat) ? TYPE_KYMC9_8 : TYPE_CMYK9_8;
+ case cmsSigMCHAData:
+ return T_DOSWAP(dwFormat) ? TYPE_KYMC10_8 : TYPE_CMYK10_8;
+ case cmsSigMCHBData:
+ return T_DOSWAP(dwFormat) ? TYPE_KYMC11_8 : TYPE_CMYK11_8;
+ case cmsSigMCHCData:
+ return T_DOSWAP(dwFormat) ? TYPE_KYMC12_8 : TYPE_CMYK12_8;
+ default:
+ return 0;
+ }
+}
+class CFX_IccProfileCache {
+ public:
+ CFX_IccProfileCache();
+ ~CFX_IccProfileCache();
+ void* m_pProfile;
+ FX_DWORD m_dwRate;
+
+ protected:
+ void Purge();
+};
+CFX_IccProfileCache::CFX_IccProfileCache() {
+ m_pProfile = NULL;
+ m_dwRate = 1;
+}
+CFX_IccProfileCache::~CFX_IccProfileCache() {
+ if (m_pProfile) {
+ cmsCloseProfile(m_pProfile);
+ }
+}
+void CFX_IccProfileCache::Purge() {}
+class CFX_IccTransformCache {
+ public:
+ CFX_IccTransformCache(CLcmsCmm* pCmm = NULL);
+ ~CFX_IccTransformCache();
+ void* m_pIccTransform;
+ FX_DWORD m_dwRate;
+ CLcmsCmm* m_pCmm;
+
+ protected:
+ void Purge();
+};
+CFX_IccTransformCache::CFX_IccTransformCache(CLcmsCmm* pCmm) {
+ m_pIccTransform = NULL;
+ m_dwRate = 1;
+ m_pCmm = pCmm;
+}
+CFX_IccTransformCache::~CFX_IccTransformCache() {
+ if (m_pIccTransform) {
+ cmsDeleteTransform(m_pIccTransform);
+ }
+ FX_Free(m_pCmm);
+}
+void CFX_IccTransformCache::Purge() {}
+class CFX_ByteStringKey : public CFX_BinaryBuf {
+ public:
+ CFX_ByteStringKey() : CFX_BinaryBuf() {}
+ CFX_ByteStringKey& operator<<(FX_DWORD i);
+};
+CFX_ByteStringKey& CFX_ByteStringKey::operator<<(FX_DWORD i) {
+ AppendBlock(&i, sizeof(FX_DWORD));
+ return *this;
+}
+void* CCodec_IccModule::CreateProfile(ICodec_IccModule::IccParam* pIccParam,
+ Icc_CLASS ic,
+ CFX_BinaryBuf* pTransformKey) {
+ CFX_IccProfileCache* pCache = NULL;
+ CFX_ByteStringKey key;
+ CFX_ByteString text;
+ key << pIccParam->ColorSpace << (pIccParam->dwProfileType | ic << 8);
+ uint8_t ID[16];
+ switch (pIccParam->dwProfileType) {
+ case Icc_PARAMTYPE_NONE:
+ return NULL;
+ case Icc_PARAMTYPE_BUFFER:
+ MD5ComputeID(pIccParam->pProfileData, pIccParam->dwProfileSize, ID);
+ break;
+ case Icc_PARAMTYPE_PARAM:
+ FXSYS_memset(ID, 0, 16);
+ switch (pIccParam->ColorSpace) {
+ case IccCS_Gray:
+ text.Format("%lf", pIccParam->Gamma);
+ break;
+ default:
+ break;
+ }
+ MD5ComputeID(text.GetBuffer(0), text.GetLength(), ID);
+ break;
+ default:
+ break;
+ }
+ key.AppendBlock(ID, 16);
+ CFX_ByteString ProfileKey(key.GetBuffer(), key.GetSize());
+ ASSERT(pTransformKey);
+ pTransformKey->AppendBlock(ProfileKey.GetBuffer(0), ProfileKey.GetLength());
+ auto it = m_MapProfile.find(ProfileKey);
+ if (it == m_MapProfile.end()) {
+ pCache = new CFX_IccProfileCache;
+ switch (pIccParam->dwProfileType) {
+ case Icc_PARAMTYPE_BUFFER:
+ pCache->m_pProfile = cmsOpenProfileFromMem(pIccParam->pProfileData,
+ pIccParam->dwProfileSize);
+ break;
+ case Icc_PARAMTYPE_PARAM:
+ switch (pIccParam->ColorSpace) {
+ case IccCS_Rgb:
+ pCache->m_pProfile = cmsCreate_sRGBProfile();
+ break;
+ case IccCS_Gray:
+ pCache->m_pProfile = CreateProfile_Gray(pIccParam->Gamma);
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ m_MapProfile[ProfileKey] = pCache;
+ } else {
+ pCache = it->second;
+ pCache->m_dwRate++;
+ }
+ return pCache->m_pProfile;
+}
+void* CCodec_IccModule::CreateTransform(
+ ICodec_IccModule::IccParam* pInputParam,
+ ICodec_IccModule::IccParam* pOutputParam,
+ ICodec_IccModule::IccParam* pProofParam,
+ FX_DWORD dwIntent,
+ FX_DWORD dwFlag,
+ FX_DWORD dwPrfIntent,
+ FX_DWORD dwPrfFlag) {
+ CLcmsCmm* pCmm = NULL;
+ ASSERT(pInputParam && pOutputParam);
+ CFX_ByteStringKey key;
+ void* pInputProfile = CreateProfile(pInputParam, Icc_CLASS_INPUT, &key);
+ if (!pInputProfile) {
+ return NULL;
+ }
+ void* pOutputProfile = CreateProfile(pOutputParam, Icc_CLASS_OUTPUT, &key);
+ if (!pOutputProfile) {
+ return NULL;
+ }
+ FX_DWORD dwInputProfileType =
+ TransferProfileType(pInputProfile, pInputParam->dwFormat);
+ FX_DWORD dwOutputProfileType =
+ TransferProfileType(pOutputProfile, pOutputParam->dwFormat);
+ if (dwInputProfileType == 0 || dwOutputProfileType == 0) {
+ return NULL;
+ }
+ void* pProofProfile = NULL;
+ if (pProofParam) {
+ pProofProfile = CreateProfile(pProofParam, Icc_CLASS_PROOF, &key);
+ }
+ key << dwInputProfileType << dwOutputProfileType << dwIntent << dwFlag
+ << (pProofProfile != NULL) << dwPrfIntent << dwPrfFlag;
+ CFX_ByteStringC TransformKey(key.GetBuffer(), key.GetSize());
+ CFX_IccTransformCache* pTransformCache;
+ auto it = m_MapTranform.find(TransformKey);
+ if (it == m_MapTranform.end()) {
+ pCmm = FX_Alloc(CLcmsCmm, 1);
+ pCmm->m_nSrcComponents = T_CHANNELS(dwInputProfileType);
+ pCmm->m_nDstComponents = T_CHANNELS(dwOutputProfileType);
+ pCmm->m_bLab = T_COLORSPACE(pInputParam->dwFormat) == PT_Lab;
+ pTransformCache = new CFX_IccTransformCache(pCmm);
+ if (pProofProfile) {
+ pTransformCache->m_pIccTransform = cmsCreateProofingTransform(
+ pInputProfile, dwInputProfileType, pOutputProfile,
+ dwOutputProfileType, pProofProfile, dwIntent, dwPrfIntent, dwPrfFlag);
+ } else {
+ pTransformCache->m_pIccTransform =
+ cmsCreateTransform(pInputProfile, dwInputProfileType, pOutputProfile,
+ dwOutputProfileType, dwIntent, dwFlag);
+ }
+ pCmm->m_hTransform = pTransformCache->m_pIccTransform;
+ m_MapTranform[TransformKey] = pTransformCache;
+ } else {
+ pTransformCache = it->second;
+ pTransformCache->m_dwRate++;
+ }
+ return pTransformCache->m_pCmm;
+}
+CCodec_IccModule::~CCodec_IccModule() {
+ for (const auto& pair : m_MapProfile) {
+ delete pair.second;
+ }
+ m_MapProfile.clear();
+ for (const auto& pair : m_MapTranform) {
+ delete pair.second;
+ }
+ m_MapTranform.clear();
+}
+void* CCodec_IccModule::CreateTransform_sRGB(const uint8_t* pProfileData,
+ FX_DWORD dwProfileSize,
+ FX_DWORD& nComponents,
+ int32_t intent,
+ FX_DWORD dwSrcFormat) {
+ return IccLib_CreateTransform_sRGB(pProfileData, dwProfileSize, nComponents,
+ intent, dwSrcFormat);
+}
+
+void* CCodec_IccModule::CreateTransform_CMYK(const uint8_t* pSrcProfileData,
+ FX_DWORD dwSrcProfileSize,
+ FX_DWORD& nSrcComponents,
+ const uint8_t* pDstProfileData,
+ FX_DWORD dwDstProfileSize,
+ int32_t intent,
+ FX_DWORD dwSrcFormat,
+ FX_DWORD dwDstFormat) {
+ return IccLib_CreateTransform(
+ pSrcProfileData, dwSrcProfileSize, nSrcComponents, pDstProfileData,
+ dwDstProfileSize, 4, intent, dwSrcFormat, dwDstFormat);
+}
+
+void CCodec_IccModule::DestroyTransform(void* pTransform) {
+ IccLib_DestroyTransform(pTransform);
+}
+void CCodec_IccModule::Translate(void* pTransform,
+ FX_FLOAT* pSrcValues,
+ FX_FLOAT* pDestValues) {
+ IccLib_Translate(pTransform, m_nComponents, pSrcValues, pDestValues);
+}
+void CCodec_IccModule::TranslateScanline(void* pTransform,
+ uint8_t* pDest,
+ const uint8_t* pSrc,
+ int32_t pixels) {
+ IccLib_TranslateImage(pTransform, pDest, pSrc, pixels);
+}
+const uint8_t g_CMYKSamples[81 * 81 * 3] = {
+ 255, 255, 255, 225, 226, 228, 199, 200, 202, 173, 174, 178, 147, 149, 152,
+ 123, 125, 128, 99, 99, 102, 69, 70, 71, 34, 30, 31, 255, 253, 229,
+ 226, 224, 203, 200, 199, 182, 173, 173, 158, 149, 148, 135, 125, 124, 113,
+ 99, 99, 90, 70, 69, 63, 33, 29, 24, 255, 251, 204, 228, 223, 182,
+ 201, 198, 163, 174, 172, 142, 150, 147, 122, 125, 123, 101, 99, 98, 80,
+ 70, 68, 54, 32, 28, 16, 255, 249, 179, 230, 222, 160, 203, 197, 144,
+ 174, 170, 124, 150, 145, 105, 125, 122, 88, 99, 97, 69, 70, 68, 46,
+ 31, 28, 6, 255, 247, 154, 229, 220, 138, 203, 195, 122, 176, 169, 107,
+ 150, 145, 91, 125, 121, 74, 100, 96, 57, 70, 67, 35, 29, 26, 0,
+ 255, 246, 128, 231, 217, 114, 205, 194, 101, 176, 167, 88, 150, 144, 75,
+ 125, 120, 60, 100, 96, 44, 70, 66, 24, 28, 26, 0, 255, 244, 96,
+ 231, 217, 87, 203, 192, 78, 175, 167, 66, 150, 143, 56, 125, 119, 43,
+ 100, 95, 29, 69, 66, 7, 26, 26, 0, 255, 243, 51, 232, 215, 51,
+ 204, 191, 43, 176, 165, 38, 150, 142, 28, 125, 118, 17, 99, 94, 0,
+ 68, 65, 0, 24, 25, 0, 255, 241, 0, 231, 215, 0, 203, 190, 0,
+ 176, 164, 0, 150, 141, 0, 126, 117, 0, 99, 93, 0, 68, 65, 0,
+ 24, 25, 0, 252, 228, 238, 222, 201, 211, 197, 180, 190, 171, 156, 166,
+ 147, 133, 143, 123, 111, 119, 99, 88, 94, 71, 61, 66, 34, 22, 26,
+ 254, 226, 213, 224, 201, 191, 199, 179, 171, 172, 155, 148, 147, 133, 128,
+ 123, 110, 106, 98, 87, 83, 70, 59, 57, 33, 21, 18, 254, 224, 191,
+ 224, 199, 172, 200, 177, 153, 173, 154, 133, 147, 132, 115, 123, 109, 94,
+ 98, 86, 74, 70, 59, 49, 32, 21, 9, 255, 222, 168, 227, 198, 150,
+ 200, 175, 135, 173, 153, 118, 148, 130, 99, 123, 109, 82, 98, 86, 64,
+ 69, 58, 40, 31, 19, 0, 255, 221, 145, 227, 196, 129, 201, 174, 115,
+ 173, 151, 99, 148, 129, 85, 124, 108, 69, 98, 85, 52, 69, 58, 30,
+ 30, 19, 0, 255, 219, 121, 227, 195, 109, 201, 174, 97, 174, 150, 83,
+ 148, 129, 70, 124, 107, 55, 98, 84, 40, 69, 58, 19, 28, 18, 0,
+ 255, 218, 92, 229, 194, 82, 202, 173, 75, 174, 150, 63, 149, 128, 51,
+ 124, 106, 39, 98, 84, 24, 68, 57, 3, 26, 18, 0, 255, 217, 54,
+ 228, 193, 52, 201, 172, 46, 174, 148, 36, 148, 127, 27, 123, 105, 14,
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+ 0, 0, 0, 0, 98, 93, 0, 87, 81, 0, 77, 72, 0, 66, 61,
+ 0, 54, 49, 0, 42, 37, 0, 28, 24, 0, 6, 4, 0, 0, 0,
+ 0, 98, 77, 0, 87, 68, 0, 77, 59, 0, 65, 49, 0, 54, 39,
+ 0, 42, 27, 0, 29, 14, 0, 6, 0, 0, 0, 0, 1, 98, 65,
+ 7, 87, 56, 0, 77, 49, 0, 66, 41, 0, 54, 30, 0, 42, 19,
+ 0, 29, 3, 0, 6, 0, 0, 0, 0, 0, 84, 166, 0, 74, 149,
+ 0, 64, 134, 0, 53, 117, 0, 41, 100, 0, 28, 83, 0, 11, 64,
+ 0, 0, 42, 0, 0, 3, 0, 84, 151, 0, 74, 135, 0, 64, 121,
+ 0, 53, 105, 0, 42, 90, 0, 30, 75, 0, 14, 58, 0, 0, 36,
+ 0, 0, 0, 0, 84, 138, 0, 74, 124, 1, 64, 110, 0, 54, 95,
+ 0, 43, 81, 0, 30, 67, 0, 15, 51, 0, 1, 29, 0, 0, 0,
+ 14, 84, 126, 12, 74, 112, 2, 65, 99, 0, 54, 85, 0, 44, 73,
+ 0, 31, 59, 0, 16, 44, 0, 1, 23, 0, 0, 0, 16, 84, 113,
+ 13, 74, 100, 6, 65, 89, 0, 54, 77, 0, 44, 65, 0, 31, 51,
+ 0, 17, 36, 0, 1, 16, 0, 0, 0, 24, 84, 100, 18, 74, 88,
+ 13, 65, 78, 2, 55, 68, 0, 44, 55, 0, 32, 43, 0, 18, 28,
+ 0, 1, 6, 0, 0, 0, 26, 84, 87, 24, 74, 76, 17, 65, 67,
+ 7, 54, 57, 0, 44, 46, 0, 32, 35, 0, 19, 21, 0, 2, 3,
+ 0, 0, 0, 30, 84, 74, 28, 74, 64, 20, 65, 55, 12, 55, 46,
+ 0, 44, 35, 0, 32, 24, 0, 18, 9, 0, 1, 0, 0, 0, 0,
+ 32, 84, 63, 28, 74, 54, 21, 65, 47, 13, 54, 38, 0, 44, 28,
+ 0, 32, 16, 0, 18, 1, 0, 1, 0, 0, 0, 0, 30, 67, 155,
+ 20, 58, 139, 20, 49, 126, 12, 39, 110, 0, 27, 94, 0, 13, 77,
+ 0, 0, 60, 0, 0, 37, 0, 0, 0, 35, 67, 142, 30, 58, 126,
+ 23, 50, 114, 16, 40, 99, 7, 29, 85, 0, 15, 69, 0, 0, 52,
+ 0, 0, 30, 0, 0, 0, 35, 68, 131, 30, 59, 116, 27, 50, 104,
+ 18, 40, 90, 9, 29, 76, 0, 17, 62, 0, 2, 46, 0, 0, 24,
+ 0, 0, 0, 37, 69, 119, 33, 59, 106, 27, 51, 94, 21, 41, 80,
+ 9, 30, 67, 0, 18, 54, 0, 3, 39, 0, 0, 18, 0, 0, 0,
+ 40, 69, 107, 36, 59, 94, 28, 51, 84, 18, 41, 72, 10, 31, 60,
+ 0, 19, 47, 0, 4, 32, 0, 0, 10, 0, 0, 0, 42, 69, 95,
+ 36, 59, 84, 29, 51, 74, 19, 41, 63, 10, 31, 52, 0, 20, 39,
+ 0, 4, 25, 0, 0, 4, 0, 0, 0, 43, 69, 83, 38, 60, 73,
+ 32, 51, 62, 23, 42, 53, 11, 31, 42, 0, 20, 31, 0, 5, 17,
+ 0, 0, 1, 0, 0, 0, 45, 69, 70, 39, 60, 60, 33, 51, 52,
+ 24, 42, 43, 13, 32, 33, 0, 21, 21, 0, 5, 6, 0, 0, 0,
+ 0, 0, 0, 47, 69, 59, 41, 60, 51, 34, 51, 43, 24, 42, 35,
+ 12, 33, 26, 1, 22, 14, 0, 5, 1, 0, 0, 0, 0, 0, 0,
+ 46, 48, 146, 42, 40, 131, 36, 32, 118, 27, 22, 103, 17, 6, 88,
+ 5, 0, 73, 0, 0, 55, 0, 0, 33, 0, 0, 0, 48, 48, 133,
+ 44, 40, 119, 37, 32, 107, 28, 22, 93, 20, 8, 79, 7, 0, 65,
+ 0, 0, 49, 0, 0, 27, 0, 0, 0, 48, 50, 123, 44, 41, 109,
+ 37, 33, 97, 30, 23, 83, 21, 11, 71, 8, 0, 58, 0, 0, 42,
+ 0, 0, 21, 0, 0, 0, 49, 51, 111, 45, 42, 99, 38, 34, 87,
+ 29, 25, 75, 20, 13, 63, 8, 0, 51, 0, 0, 36, 0, 0, 14,
+ 0, 0, 0, 52, 52, 100, 44, 43, 89, 38, 35, 79, 29, 26, 68,
+ 19, 15, 56, 10, 1, 43, 0, 0, 28, 0, 0, 6, 0, 0, 0,
+ 52, 52, 90, 47, 44, 79, 39, 36, 70, 30, 27, 59, 20, 16, 47,
+ 9, 2, 36, 0, 0, 22, 0, 0, 2, 0, 0, 0, 52, 53, 78,
+ 46, 44, 68, 39, 37, 60, 32, 27, 49, 22, 17, 39, 10, 3, 28,
+ 0, 0, 12, 0, 0, 0, 0, 0, 0, 53, 53, 66, 47, 44, 57,
+ 40, 36, 48, 32, 27, 39, 22, 18, 30, 9, 4, 18, 0, 0, 3,
+ 0, 0, 0, 0, 0, 0, 54, 53, 57, 48, 45, 49, 41, 37, 41,
+ 33, 28, 32, 22, 19, 23, 11, 6, 10, 1, 0, 0, 0, 0, 0,
+ 0, 0, 0,
+};
+void AdobeCMYK_to_sRGB1(uint8_t c,
+ uint8_t m,
+ uint8_t y,
+ uint8_t k,
+ uint8_t& R,
+ uint8_t& G,
+ uint8_t& B) {
+ int fix_c = c << 8;
+ int fix_m = m << 8;
+ int fix_y = y << 8;
+ int fix_k = k << 8;
+ int c_index = (fix_c + 4096) >> 13;
+ int m_index = (fix_m + 4096) >> 13;
+ int y_index = (fix_y + 4096) >> 13;
+ int k_index = (fix_k + 4096) >> 13;
+ int pos = (c_index * 9 * 9 * 9 + m_index * 9 * 9 + y_index * 9 + k_index) * 3;
+ int fix_r = g_CMYKSamples[pos] << 8;
+ int fix_g = g_CMYKSamples[pos + 1] << 8;
+ int fix_b = g_CMYKSamples[pos + 2] << 8;
+ int c1_index = fix_c >> 13;
+ if (c1_index == c_index) {
+ c1_index = c1_index == 8 ? c1_index - 1 : c1_index + 1;
+ }
+ int m1_index = fix_m >> 13;
+ if (m1_index == m_index) {
+ m1_index = m1_index == 8 ? m1_index - 1 : m1_index + 1;
+ }
+ int y1_index = fix_y >> 13;
+ if (y1_index == y_index) {
+ y1_index = y1_index == 8 ? y1_index - 1 : y1_index + 1;
+ }
+ int k1_index = fix_k >> 13;
+ if (k1_index == k_index) {
+ k1_index = k1_index == 8 ? k1_index - 1 : k1_index + 1;
+ }
+ int c1_pos = pos + (c1_index - c_index) * 9 * 9 * 9 * 3;
+ int m1_pos = pos + (m1_index - m_index) * 9 * 9 * 3;
+ int y1_pos = pos + (y1_index - y_index) * 9 * 3;
+ int k1_pos = pos + (k1_index - k_index) * 3;
+ int c_r_delta = g_CMYKSamples[pos] - g_CMYKSamples[c1_pos];
+ int c_g_delta = g_CMYKSamples[pos + 1] - g_CMYKSamples[c1_pos + 1];
+ int c_b_delta = g_CMYKSamples[pos + 2] - g_CMYKSamples[c1_pos + 2];
+ int m_r_delta = g_CMYKSamples[pos] - g_CMYKSamples[m1_pos];
+ int m_g_delta = g_CMYKSamples[pos + 1] - g_CMYKSamples[m1_pos + 1];
+ int m_b_delta = g_CMYKSamples[pos + 2] - g_CMYKSamples[m1_pos + 2];
+ int y_r_delta = g_CMYKSamples[pos] - g_CMYKSamples[y1_pos];
+ int y_g_delta = g_CMYKSamples[pos + 1] - g_CMYKSamples[y1_pos + 1];
+ int y_b_delta = g_CMYKSamples[pos + 2] - g_CMYKSamples[y1_pos + 2];
+ int k_r_delta = g_CMYKSamples[pos] - g_CMYKSamples[k1_pos];
+ int k_g_delta = g_CMYKSamples[pos + 1] - g_CMYKSamples[k1_pos + 1];
+ int k_b_delta = g_CMYKSamples[pos + 2] - g_CMYKSamples[k1_pos + 2];
+ int c_rate = (fix_c - (c_index << 13)) * (c_index - c1_index);
+ fix_r += c_r_delta * c_rate / 32;
+ fix_g += c_g_delta * c_rate / 32;
+ fix_b += c_b_delta * c_rate / 32;
+ int m_rate = (fix_m - (m_index << 13)) * (m_index - m1_index);
+ fix_r += m_r_delta * m_rate / 32;
+ fix_g += m_g_delta * m_rate / 32;
+ fix_b += m_b_delta * m_rate / 32;
+ int y_rate = (fix_y - (y_index << 13)) * (y_index - y1_index);
+ fix_r += y_r_delta * y_rate / 32;
+ fix_g += y_g_delta * y_rate / 32;
+ fix_b += y_b_delta * y_rate / 32;
+ int k_rate = (fix_k - (k_index << 13)) * (k_index - k1_index);
+ fix_r += k_r_delta * k_rate / 32;
+ fix_g += k_g_delta * k_rate / 32;
+ fix_b += k_b_delta * k_rate / 32;
+ if (fix_r < 0) {
+ fix_r = 0;
+ }
+ if (fix_g < 0) {
+ fix_g = 0;
+ }
+ if (fix_b < 0) {
+ fix_b = 0;
+ }
+ R = fix_r >> 8;
+ G = fix_g >> 8;
+ B = fix_b >> 8;
+}
+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) {
+ uint8_t c1 = FXSYS_round(c * 255);
+ uint8_t m1 = FXSYS_round(m * 255);
+ uint8_t y1 = FXSYS_round(y * 255);
+ uint8_t k1 = FXSYS_round(k * 255);
+ uint8_t r, g, b;
+ AdobeCMYK_to_sRGB1(c1, m1, y1, k1, r, g, b);
+ R = 1.0f * r / 255;
+ G = 1.0f * g / 255;
+ B = 1.0f * b / 255;
+}
diff --git a/core/fxcodec/codec/fx_codec_jbig.cpp b/core/fxcodec/codec/fx_codec_jbig.cpp
new file mode 100644
index 0000000..557d246
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_jbig.cpp
@@ -0,0 +1,126 @@
+// 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 <list>
+
+#include "core/fxcodec/codec/codec_int.h"
+#include "core/include/fxcodec/fx_codec.h"
+
+// Holds per-document JBig2 related data.
+class JBig2DocumentContext : public CFX_DestructObject {
+ public:
+ std::list<CJBig2_CachePair>* GetSymbolDictCache() {
+ return &m_SymbolDictCache;
+ }
+
+ ~JBig2DocumentContext() override {
+ for (auto it : m_SymbolDictCache) {
+ delete it.second;
+ }
+ }
+
+ private:
+ std::list<CJBig2_CachePair> m_SymbolDictCache;
+};
+
+JBig2DocumentContext* GetJBig2DocumentContext(CCodec_Jbig2Module* pModule,
+ CFX_PrivateData* pPrivateData) {
+ void* pModulePrivateData = pPrivateData->GetPrivateData(pModule);
+ if (pModulePrivateData) {
+ CFX_DestructObject* pDestructObject =
+ reinterpret_cast<CFX_DestructObject*>(pModulePrivateData);
+ return static_cast<JBig2DocumentContext*>(pDestructObject);
+ }
+ JBig2DocumentContext* pJBig2DocumentContext = new JBig2DocumentContext();
+ pPrivateData->SetPrivateObj(pModule, pJBig2DocumentContext);
+ return pJBig2DocumentContext;
+}
+
+CCodec_Jbig2Context::CCodec_Jbig2Context() {
+ FXSYS_memset(this, 0, sizeof(CCodec_Jbig2Context));
+}
+
+CCodec_Jbig2Module::~CCodec_Jbig2Module() {}
+
+void* CCodec_Jbig2Module::CreateJbig2Context() {
+ return new CCodec_Jbig2Context();
+}
+void CCodec_Jbig2Module::DestroyJbig2Context(void* pJbig2Content) {
+ if (pJbig2Content) {
+ CJBig2_Context::DestroyContext(
+ ((CCodec_Jbig2Context*)pJbig2Content)->m_pContext);
+ delete (CCodec_Jbig2Context*)pJbig2Content;
+ }
+ pJbig2Content = NULL;
+}
+FXCODEC_STATUS CCodec_Jbig2Module::StartDecode(void* pJbig2Context,
+ CFX_PrivateData* pPrivateData,
+ FX_DWORD width,
+ FX_DWORD height,
+ CPDF_StreamAcc* src_stream,
+ CPDF_StreamAcc* global_stream,
+ uint8_t* dest_buf,
+ FX_DWORD dest_pitch,
+ IFX_Pause* pPause) {
+ if (!pJbig2Context) {
+ return FXCODEC_STATUS_ERR_PARAMS;
+ }
+ JBig2DocumentContext* pJBig2DocumentContext =
+ GetJBig2DocumentContext(this, pPrivateData);
+ CCodec_Jbig2Context* m_pJbig2Context = (CCodec_Jbig2Context*)pJbig2Context;
+ m_pJbig2Context->m_width = width;
+ m_pJbig2Context->m_height = height;
+ m_pJbig2Context->m_pSrcStream = src_stream;
+ m_pJbig2Context->m_pGlobalStream = global_stream;
+ m_pJbig2Context->m_dest_buf = dest_buf;
+ m_pJbig2Context->m_dest_pitch = dest_pitch;
+ m_pJbig2Context->m_pPause = pPause;
+ FXSYS_memset(dest_buf, 0, height * dest_pitch);
+ m_pJbig2Context->m_pContext = CJBig2_Context::CreateContext(
+ global_stream, src_stream, pJBig2DocumentContext->GetSymbolDictCache(),
+ pPause);
+ if (!m_pJbig2Context->m_pContext) {
+ return FXCODEC_STATUS_ERROR;
+ }
+ int ret = m_pJbig2Context->m_pContext->getFirstPage(dest_buf, width, height,
+ dest_pitch, pPause);
+ if (m_pJbig2Context->m_pContext->GetProcessingStatus() ==
+ FXCODEC_STATUS_DECODE_FINISH) {
+ CJBig2_Context::DestroyContext(m_pJbig2Context->m_pContext);
+ m_pJbig2Context->m_pContext = NULL;
+ if (ret != JBIG2_SUCCESS) {
+ return FXCODEC_STATUS_ERROR;
+ }
+ int dword_size = height * dest_pitch / 4;
+ FX_DWORD* dword_buf = (FX_DWORD*)dest_buf;
+ for (int i = 0; i < dword_size; i++) {
+ dword_buf[i] = ~dword_buf[i];
+ }
+ return FXCODEC_STATUS_DECODE_FINISH;
+ }
+ return m_pJbig2Context->m_pContext->GetProcessingStatus();
+}
+FXCODEC_STATUS CCodec_Jbig2Module::ContinueDecode(void* pJbig2Context,
+ IFX_Pause* pPause) {
+ CCodec_Jbig2Context* m_pJbig2Context = (CCodec_Jbig2Context*)pJbig2Context;
+ int ret = m_pJbig2Context->m_pContext->Continue(pPause);
+ if (m_pJbig2Context->m_pContext->GetProcessingStatus() !=
+ FXCODEC_STATUS_DECODE_FINISH) {
+ return m_pJbig2Context->m_pContext->GetProcessingStatus();
+ }
+ CJBig2_Context::DestroyContext(m_pJbig2Context->m_pContext);
+ m_pJbig2Context->m_pContext = NULL;
+ if (ret != JBIG2_SUCCESS) {
+ return FXCODEC_STATUS_ERROR;
+ }
+ int dword_size =
+ m_pJbig2Context->m_height * m_pJbig2Context->m_dest_pitch / 4;
+ FX_DWORD* dword_buf = (FX_DWORD*)m_pJbig2Context->m_dest_buf;
+ for (int i = 0; i < dword_size; i++) {
+ dword_buf[i] = ~dword_buf[i];
+ }
+ return FXCODEC_STATUS_DECODE_FINISH;
+}
diff --git a/core/fxcodec/codec/fx_codec_jpeg.cpp b/core/fxcodec/codec/fx_codec_jpeg.cpp
new file mode 100644
index 0000000..efbeb79
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_jpeg.cpp
@@ -0,0 +1,692 @@
+// 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 <setjmp.h>
+
+#include "core/fxcodec/codec/codec_int.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxcrt/fx_safe_types.h"
+#include "core/include/fxge/fx_dib.h"
+
+extern "C" {
+#undef FAR
+#if defined(USE_SYSTEM_LIBJPEG)
+#include <jpeglib.h>
+#elif defined(USE_LIBJPEG_TURBO)
+#include "third_party/libjpeg_turbo/jpeglib.h"
+#else
+#include "third_party/libjpeg/jpeglib.h"
+#endif
+}
+
+extern "C" {
+static void _JpegScanSOI(const uint8_t*& src_buf, FX_DWORD& src_size) {
+ if (src_size == 0) {
+ return;
+ }
+ FX_DWORD offset = 0;
+ while (offset < src_size - 1) {
+ if (src_buf[offset] == 0xff && src_buf[offset + 1] == 0xd8) {
+ src_buf += offset;
+ src_size -= offset;
+ return;
+ }
+ offset++;
+ }
+}
+};
+extern "C" {
+static void _src_do_nothing(struct jpeg_decompress_struct* cinfo) {}
+};
+extern "C" {
+static void _error_fatal(j_common_ptr cinfo) {
+ longjmp(*(jmp_buf*)cinfo->client_data, -1);
+}
+};
+extern "C" {
+static void _src_skip_data(struct jpeg_decompress_struct* cinfo, long num) {
+ if (num > (long)cinfo->src->bytes_in_buffer) {
+ _error_fatal((j_common_ptr)cinfo);
+ }
+ cinfo->src->next_input_byte += num;
+ cinfo->src->bytes_in_buffer -= num;
+}
+};
+extern "C" {
+static boolean _src_fill_buffer(j_decompress_ptr cinfo) {
+ return 0;
+}
+};
+extern "C" {
+static boolean _src_resync(j_decompress_ptr cinfo, int desired) {
+ return 0;
+}
+};
+extern "C" {
+static void _error_do_nothing(j_common_ptr cinfo) {}
+};
+extern "C" {
+static void _error_do_nothing1(j_common_ptr cinfo, int) {}
+};
+extern "C" {
+static void _error_do_nothing2(j_common_ptr cinfo, char*) {}
+};
+#define JPEG_MARKER_EXIF (JPEG_APP0 + 1)
+#define JPEG_MARKER_ICC (JPEG_APP0 + 2)
+#define JPEG_MARKER_AUTHORTIME (JPEG_APP0 + 3)
+#define JPEG_MARKER_MAXSIZE 0xFFFF
+#define JPEG_OVERHEAD_LEN 14
+static FX_BOOL _JpegEmbedIccProfile(j_compress_ptr cinfo,
+ const uint8_t* icc_buf_ptr,
+ FX_DWORD icc_length) {
+ if (!icc_buf_ptr || icc_length == 0) {
+ return FALSE;
+ }
+ FX_DWORD icc_segment_size = (JPEG_MARKER_MAXSIZE - 2 - JPEG_OVERHEAD_LEN);
+ FX_DWORD icc_segment_num = (icc_length / icc_segment_size) + 1;
+ if (icc_segment_num > 255) {
+ return FALSE;
+ }
+ FX_DWORD icc_data_length =
+ JPEG_OVERHEAD_LEN + (icc_segment_num > 1 ? icc_segment_size : icc_length);
+ uint8_t* icc_data = FX_Alloc(uint8_t, icc_data_length);
+ FXSYS_memcpy(icc_data, "\x49\x43\x43\x5f\x50\x52\x4f\x46\x49\x4c\x45\x00",
+ 12);
+ icc_data[13] = (uint8_t)icc_segment_num;
+ for (uint8_t i = 0; i < (icc_segment_num - 1); i++) {
+ icc_data[12] = i + 1;
+ FXSYS_memcpy(icc_data + JPEG_OVERHEAD_LEN,
+ icc_buf_ptr + i * icc_segment_size, icc_segment_size);
+ jpeg_write_marker(cinfo, JPEG_MARKER_ICC, icc_data, icc_data_length);
+ }
+ icc_data[12] = (uint8_t)icc_segment_num;
+ FX_DWORD icc_size = (icc_segment_num - 1) * icc_segment_size;
+ FXSYS_memcpy(icc_data + JPEG_OVERHEAD_LEN, icc_buf_ptr + icc_size,
+ icc_length - icc_size);
+ jpeg_write_marker(cinfo, JPEG_MARKER_ICC, icc_data,
+ JPEG_OVERHEAD_LEN + icc_length - icc_size);
+ FX_Free(icc_data);
+ return TRUE;
+}
+extern "C" {
+static void _dest_do_nothing(j_compress_ptr cinfo) {}
+};
+extern "C" {
+static boolean _dest_empty(j_compress_ptr cinfo) {
+ return FALSE;
+}
+};
+#define JPEG_BLOCK_SIZE 1048576
+static void _JpegEncode(const CFX_DIBSource* pSource,
+ uint8_t*& dest_buf,
+ FX_STRSIZE& dest_size,
+ int quality,
+ const uint8_t* icc_buf,
+ FX_DWORD icc_length) {
+ struct jpeg_error_mgr jerr;
+ jerr.error_exit = _error_do_nothing;
+ jerr.emit_message = _error_do_nothing1;
+ jerr.output_message = _error_do_nothing;
+ jerr.format_message = _error_do_nothing2;
+ jerr.reset_error_mgr = _error_do_nothing;
+
+ struct jpeg_compress_struct cinfo;
+ memset(&cinfo, 0, sizeof(cinfo));
+ cinfo.err = &jerr;
+ jpeg_create_compress(&cinfo);
+ int Bpp = pSource->GetBPP() / 8;
+ FX_DWORD nComponents = Bpp >= 3 ? (pSource->IsCmykImage() ? 4 : 3) : 1;
+ FX_DWORD pitch = pSource->GetPitch();
+ FX_DWORD width = pdfium::base::checked_cast<FX_DWORD>(pSource->GetWidth());
+ FX_DWORD height = pdfium::base::checked_cast<FX_DWORD>(pSource->GetHeight());
+ FX_SAFE_DWORD safe_buf_len = width;
+ safe_buf_len *= height;
+ safe_buf_len *= nComponents;
+ safe_buf_len += 1024;
+ if (icc_length) {
+ safe_buf_len += 255 * 18;
+ safe_buf_len += icc_length;
+ }
+ FX_DWORD dest_buf_length = 0;
+ if (!safe_buf_len.IsValid()) {
+ dest_buf = nullptr;
+ } else {
+ dest_buf_length = safe_buf_len.ValueOrDie();
+ dest_buf = FX_TryAlloc(uint8_t, dest_buf_length);
+ const int MIN_TRY_BUF_LEN = 1024;
+ while (!dest_buf && dest_buf_length > MIN_TRY_BUF_LEN) {
+ dest_buf_length >>= 1;
+ dest_buf = FX_TryAlloc(uint8_t, dest_buf_length);
+ }
+ }
+ if (!dest_buf) {
+ FX_OutOfMemoryTerminate();
+ }
+ struct jpeg_destination_mgr dest;
+ dest.init_destination = _dest_do_nothing;
+ dest.term_destination = _dest_do_nothing;
+ dest.empty_output_buffer = _dest_empty;
+ dest.next_output_byte = dest_buf;
+ dest.free_in_buffer = dest_buf_length;
+ cinfo.dest = &dest;
+ cinfo.image_width = width;
+ cinfo.image_height = height;
+ cinfo.input_components = nComponents;
+ if (nComponents == 1) {
+ cinfo.in_color_space = JCS_GRAYSCALE;
+ } else if (nComponents == 3) {
+ cinfo.in_color_space = JCS_RGB;
+ } else {
+ cinfo.in_color_space = JCS_CMYK;
+ }
+ uint8_t* line_buf = NULL;
+ if (nComponents > 1) {
+ line_buf = FX_Alloc2D(uint8_t, width, nComponents);
+ }
+ jpeg_set_defaults(&cinfo);
+ if (quality != 75) {
+ jpeg_set_quality(&cinfo, quality, TRUE);
+ }
+ jpeg_start_compress(&cinfo, TRUE);
+ _JpegEmbedIccProfile(&cinfo, icc_buf, icc_length);
+ JSAMPROW row_pointer[1];
+ JDIMENSION row;
+ while (cinfo.next_scanline < cinfo.image_height) {
+ const uint8_t* src_scan = pSource->GetScanline(cinfo.next_scanline);
+ if (nComponents > 1) {
+ uint8_t* dest_scan = line_buf;
+ if (nComponents == 3) {
+ for (FX_DWORD i = 0; i < width; i++) {
+ dest_scan[0] = src_scan[2];
+ dest_scan[1] = src_scan[1];
+ dest_scan[2] = src_scan[0];
+ dest_scan += 3;
+ src_scan += Bpp;
+ }
+ } else {
+ for (FX_DWORD i = 0; i < pitch; i++) {
+ *dest_scan++ = ~*src_scan++;
+ }
+ }
+ row_pointer[0] = line_buf;
+ } else {
+ row_pointer[0] = (uint8_t*)src_scan;
+ }
+ row = cinfo.next_scanline;
+ jpeg_write_scanlines(&cinfo, row_pointer, 1);
+ if (cinfo.next_scanline == row) {
+ dest_buf =
+ FX_Realloc(uint8_t, dest_buf, dest_buf_length + JPEG_BLOCK_SIZE);
+ dest.next_output_byte = dest_buf + dest_buf_length - dest.free_in_buffer;
+ dest_buf_length += JPEG_BLOCK_SIZE;
+ dest.free_in_buffer += JPEG_BLOCK_SIZE;
+ }
+ }
+ jpeg_finish_compress(&cinfo);
+ jpeg_destroy_compress(&cinfo);
+ FX_Free(line_buf);
+ dest_size = dest_buf_length - (FX_STRSIZE)dest.free_in_buffer;
+}
+
+#ifdef PDF_ENABLE_XFA
+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;
+ }
+}
+#endif // PDF_ENABLE_XFA
+
+static FX_BOOL _JpegLoadInfo(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int& width,
+ int& height,
+ int& num_components,
+ int& bits_per_components,
+ FX_BOOL& color_transform,
+ uint8_t** icc_buf_ptr,
+ FX_DWORD* icc_length) {
+ _JpegScanSOI(src_buf, src_size);
+ struct jpeg_decompress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ jerr.error_exit = _error_fatal;
+ jerr.emit_message = _error_do_nothing1;
+ jerr.output_message = _error_do_nothing;
+ jerr.format_message = _error_do_nothing2;
+ jerr.reset_error_mgr = _error_do_nothing;
+ jerr.trace_level = 0;
+ cinfo.err = &jerr;
+ jmp_buf mark;
+ cinfo.client_data = &mark;
+ if (setjmp(mark) == -1) {
+ return FALSE;
+ }
+ jpeg_create_decompress(&cinfo);
+ struct jpeg_source_mgr src;
+ src.init_source = _src_do_nothing;
+ src.term_source = _src_do_nothing;
+ src.skip_input_data = _src_skip_data;
+ src.fill_input_buffer = _src_fill_buffer;
+ src.resync_to_restart = _src_resync;
+ src.bytes_in_buffer = src_size;
+ src.next_input_byte = src_buf;
+ cinfo.src = &src;
+ if (setjmp(mark) == -1) {
+ jpeg_destroy_decompress(&cinfo);
+ return FALSE;
+ }
+ if (icc_buf_ptr && icc_length) {
+ jpeg_save_markers(&cinfo, JPEG_MARKER_ICC, JPEG_MARKER_MAXSIZE);
+ }
+ int ret = jpeg_read_header(&cinfo, TRUE);
+ if (ret != JPEG_HEADER_OK) {
+ jpeg_destroy_decompress(&cinfo);
+ return FALSE;
+ }
+ width = cinfo.image_width;
+ height = cinfo.image_height;
+ num_components = cinfo.num_components;
+ color_transform =
+ cinfo.jpeg_color_space == JCS_YCbCr || cinfo.jpeg_color_space == JCS_YCCK;
+ bits_per_components = cinfo.data_precision;
+ if (icc_buf_ptr) {
+ *icc_buf_ptr = NULL;
+ }
+ if (icc_length) {
+ *icc_length = 0;
+ }
+ jpeg_destroy_decompress(&cinfo);
+ return TRUE;
+}
+
+class CCodec_JpegDecoder : public CCodec_ScanlineDecoder {
+ public:
+ CCodec_JpegDecoder();
+ ~CCodec_JpegDecoder() override;
+
+ FX_BOOL Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ FX_BOOL ColorTransform);
+ void Destroy() { delete this; }
+
+ // CCodec_ScanlineDecoder
+ void v_DownScale(int dest_width, int dest_height) override;
+ FX_BOOL v_Rewind() override;
+ uint8_t* v_GetNextLine() override;
+ FX_DWORD GetSrcOffset() override;
+
+ FX_BOOL InitDecode();
+
+ jmp_buf m_JmpBuf;
+ struct jpeg_decompress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ struct jpeg_source_mgr src;
+ const uint8_t* m_SrcBuf;
+ FX_DWORD m_SrcSize;
+ uint8_t* m_pScanlineBuf;
+
+ FX_BOOL m_bInited;
+ FX_BOOL m_bStarted;
+ FX_BOOL m_bJpegTransform;
+
+ protected:
+ FX_DWORD m_nDefaultScaleDenom;
+};
+
+CCodec_JpegDecoder::CCodec_JpegDecoder() {
+ m_pScanlineBuf = NULL;
+ m_DownScale = 1;
+ m_bStarted = FALSE;
+ m_bInited = FALSE;
+ FXSYS_memset(&cinfo, 0, sizeof(cinfo));
+ FXSYS_memset(&jerr, 0, sizeof(jerr));
+ FXSYS_memset(&src, 0, sizeof(src));
+ m_nDefaultScaleDenom = 1;
+}
+CCodec_JpegDecoder::~CCodec_JpegDecoder() {
+ FX_Free(m_pScanlineBuf);
+ if (m_bInited) {
+ jpeg_destroy_decompress(&cinfo);
+ }
+}
+FX_BOOL CCodec_JpegDecoder::InitDecode() {
+ cinfo.err = &jerr;
+ cinfo.client_data = &m_JmpBuf;
+ if (setjmp(m_JmpBuf) == -1) {
+ return FALSE;
+ }
+ jpeg_create_decompress(&cinfo);
+ m_bInited = TRUE;
+ cinfo.src = &src;
+ src.bytes_in_buffer = m_SrcSize;
+ src.next_input_byte = m_SrcBuf;
+ if (setjmp(m_JmpBuf) == -1) {
+ jpeg_destroy_decompress(&cinfo);
+ m_bInited = FALSE;
+ return FALSE;
+ }
+ cinfo.image_width = m_OrigWidth;
+ cinfo.image_height = m_OrigHeight;
+ int ret = jpeg_read_header(&cinfo, TRUE);
+ if (ret != JPEG_HEADER_OK) {
+ return FALSE;
+ }
+ if (cinfo.saw_Adobe_marker) {
+ m_bJpegTransform = TRUE;
+ }
+ if (cinfo.num_components == 3 && !m_bJpegTransform) {
+ cinfo.out_color_space = cinfo.jpeg_color_space;
+ }
+ m_OrigWidth = cinfo.image_width;
+ m_OrigHeight = cinfo.image_height;
+ m_OutputWidth = m_OrigWidth;
+ m_OutputHeight = m_OrigHeight;
+ m_nDefaultScaleDenom = cinfo.scale_denom;
+ return TRUE;
+}
+FX_BOOL CCodec_JpegDecoder::Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ FX_BOOL ColorTransform) {
+ _JpegScanSOI(src_buf, src_size);
+ m_SrcBuf = src_buf;
+ m_SrcSize = src_size;
+ jerr.error_exit = _error_fatal;
+ jerr.emit_message = _error_do_nothing1;
+ jerr.output_message = _error_do_nothing;
+ jerr.format_message = _error_do_nothing2;
+ jerr.reset_error_mgr = _error_do_nothing;
+ src.init_source = _src_do_nothing;
+ src.term_source = _src_do_nothing;
+ src.skip_input_data = _src_skip_data;
+ src.fill_input_buffer = _src_fill_buffer;
+ src.resync_to_restart = _src_resync;
+ m_bJpegTransform = ColorTransform;
+ if (src_size > 1 &&
+ FXSYS_memcmp(src_buf + src_size - 2, "\xFF\xD9", 2) != 0) {
+ ((uint8_t*)src_buf)[src_size - 2] = 0xFF;
+ ((uint8_t*)src_buf)[src_size - 1] = 0xD9;
+ }
+ m_OutputWidth = m_OrigWidth = width;
+ m_OutputHeight = m_OrigHeight = height;
+ if (!InitDecode()) {
+ return FALSE;
+ }
+ if (cinfo.num_components < nComps) {
+ return FALSE;
+ }
+ if ((int)cinfo.image_width < width) {
+ return FALSE;
+ }
+ m_Pitch =
+ (static_cast<FX_DWORD>(cinfo.image_width) * cinfo.num_components + 3) /
+ 4 * 4;
+ m_pScanlineBuf = FX_Alloc(uint8_t, m_Pitch);
+ m_nComps = cinfo.num_components;
+ m_bpc = 8;
+ m_bColorTransformed = FALSE;
+ m_bStarted = FALSE;
+ return TRUE;
+}
+extern "C" {
+int32_t FX_GetDownsampleRatio(int32_t originWidth,
+ int32_t originHeight,
+ int32_t downsampleWidth,
+ int32_t downsampleHeight) {
+ int iratio_w = originWidth / downsampleWidth;
+ int iratio_h = originHeight / downsampleHeight;
+ int ratio = (iratio_w > iratio_h) ? iratio_h : iratio_w;
+ if (ratio >= 8) {
+ return 8;
+ }
+ if (ratio >= 4) {
+ return 4;
+ }
+ if (ratio >= 2) {
+ return 2;
+ }
+ return 1;
+}
+}
+void CCodec_JpegDecoder::v_DownScale(int dest_width, int dest_height) {
+ int old_scale = m_DownScale;
+ m_DownScale =
+ FX_GetDownsampleRatio(m_OrigWidth, m_OrigHeight, dest_width, dest_height);
+ m_OutputWidth = (m_OrigWidth + m_DownScale - 1) / m_DownScale;
+ m_OutputHeight = (m_OrigHeight + m_DownScale - 1) / m_DownScale;
+ m_Pitch = (static_cast<FX_DWORD>(m_OutputWidth) * m_nComps + 3) / 4 * 4;
+ if (old_scale != m_DownScale) {
+ m_NextLine = -1;
+ }
+}
+FX_BOOL CCodec_JpegDecoder::v_Rewind() {
+ if (m_bStarted) {
+ jpeg_destroy_decompress(&cinfo);
+ if (!InitDecode()) {
+ return FALSE;
+ }
+ }
+ if (setjmp(m_JmpBuf) == -1) {
+ return FALSE;
+ }
+ cinfo.scale_denom = m_nDefaultScaleDenom * m_DownScale;
+ m_OutputWidth = (m_OrigWidth + m_DownScale - 1) / m_DownScale;
+ m_OutputHeight = (m_OrigHeight + m_DownScale - 1) / m_DownScale;
+ if (!jpeg_start_decompress(&cinfo)) {
+ jpeg_destroy_decompress(&cinfo);
+ return FALSE;
+ }
+ if ((int)cinfo.output_width > m_OrigWidth) {
+ FXSYS_assert(FALSE);
+ return FALSE;
+ }
+ m_bStarted = TRUE;
+ return TRUE;
+}
+uint8_t* CCodec_JpegDecoder::v_GetNextLine() {
+ if (setjmp(m_JmpBuf) == -1)
+ return nullptr;
+
+ int nlines = jpeg_read_scanlines(&cinfo, &m_pScanlineBuf, 1);
+ if (nlines < 1) {
+ return nullptr;
+ }
+ return m_pScanlineBuf;
+}
+FX_DWORD CCodec_JpegDecoder::GetSrcOffset() {
+ return (FX_DWORD)(m_SrcSize - src.bytes_in_buffer);
+}
+ICodec_ScanlineDecoder* CCodec_JpegModule::CreateDecoder(
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ FX_BOOL ColorTransform) {
+ if (!src_buf || src_size == 0) {
+ return NULL;
+ }
+ CCodec_JpegDecoder* pDecoder = new CCodec_JpegDecoder;
+ if (!pDecoder->Create(src_buf, src_size, width, height, nComps,
+ ColorTransform)) {
+ delete pDecoder;
+ return NULL;
+ }
+ return pDecoder;
+}
+FX_BOOL CCodec_JpegModule::LoadInfo(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int& width,
+ int& height,
+ int& num_components,
+ int& bits_per_components,
+ FX_BOOL& color_transform,
+ uint8_t** icc_buf_ptr,
+ FX_DWORD* icc_length) {
+ return _JpegLoadInfo(src_buf, src_size, width, height, num_components,
+ bits_per_components, color_transform, icc_buf_ptr,
+ icc_length);
+}
+FX_BOOL CCodec_JpegModule::Encode(const CFX_DIBSource* pSource,
+ uint8_t*& dest_buf,
+ FX_STRSIZE& dest_size,
+ int quality,
+ const uint8_t* icc_buf,
+ FX_DWORD icc_length) {
+ if (pSource->GetBPP() < 8 || pSource->GetPalette())
+ return FALSE;
+
+ _JpegEncode(pSource, dest_buf, dest_size, quality, icc_buf, icc_length);
+ return TRUE;
+}
+struct FXJPEG_Context {
+ jmp_buf m_JumpMark;
+ jpeg_decompress_struct m_Info;
+ jpeg_error_mgr m_ErrMgr;
+ jpeg_source_mgr m_SrcMgr;
+ unsigned int m_SkipSize;
+ void* (*m_AllocFunc)(unsigned int);
+ void (*m_FreeFunc)(void*);
+};
+extern "C" {
+static void _error_fatal1(j_common_ptr cinfo) {
+ longjmp(((FXJPEG_Context*)cinfo->client_data)->m_JumpMark, -1);
+}
+};
+extern "C" {
+static void _src_skip_data1(struct jpeg_decompress_struct* cinfo, long num) {
+ if (cinfo->src->bytes_in_buffer < (size_t)num) {
+ ((FXJPEG_Context*)cinfo->client_data)->m_SkipSize =
+ (unsigned int)(num - cinfo->src->bytes_in_buffer);
+ cinfo->src->bytes_in_buffer = 0;
+ } else {
+ cinfo->src->next_input_byte += num;
+ cinfo->src->bytes_in_buffer -= num;
+ }
+}
+};
+static void* jpeg_alloc_func(unsigned int size) {
+ return FX_Alloc(char, size);
+}
+static void jpeg_free_func(void* p) {
+ FX_Free(p);
+}
+void* CCodec_JpegModule::Start() {
+ FXJPEG_Context* p = FX_Alloc(FXJPEG_Context, 1);
+ p->m_AllocFunc = jpeg_alloc_func;
+ p->m_FreeFunc = jpeg_free_func;
+ p->m_ErrMgr.error_exit = _error_fatal1;
+ p->m_ErrMgr.emit_message = _error_do_nothing1;
+ p->m_ErrMgr.output_message = _error_do_nothing;
+ p->m_ErrMgr.format_message = _error_do_nothing2;
+ p->m_ErrMgr.reset_error_mgr = _error_do_nothing;
+ p->m_SrcMgr.init_source = _src_do_nothing;
+ p->m_SrcMgr.term_source = _src_do_nothing;
+ p->m_SrcMgr.skip_input_data = _src_skip_data1;
+ p->m_SrcMgr.fill_input_buffer = _src_fill_buffer;
+ p->m_SrcMgr.resync_to_restart = _src_resync;
+ p->m_Info.client_data = p;
+ p->m_Info.err = &p->m_ErrMgr;
+ if (setjmp(p->m_JumpMark) == -1) {
+ return 0;
+ }
+ jpeg_create_decompress(&p->m_Info);
+ p->m_Info.src = &p->m_SrcMgr;
+ p->m_SkipSize = 0;
+ return p;
+}
+void CCodec_JpegModule::Finish(void* pContext) {
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ jpeg_destroy_decompress(&p->m_Info);
+ p->m_FreeFunc(p);
+}
+void CCodec_JpegModule::Input(void* pContext,
+ const unsigned char* src_buf,
+ FX_DWORD src_size) {
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ if (p->m_SkipSize) {
+ if (p->m_SkipSize > src_size) {
+ p->m_SrcMgr.bytes_in_buffer = 0;
+ p->m_SkipSize -= src_size;
+ return;
+ }
+ src_size -= p->m_SkipSize;
+ src_buf += p->m_SkipSize;
+ p->m_SkipSize = 0;
+ }
+ p->m_SrcMgr.next_input_byte = src_buf;
+ p->m_SrcMgr.bytes_in_buffer = src_size;
+}
+
+#ifdef PDF_ENABLE_XFA
+int CCodec_JpegModule::ReadHeader(void* pContext,
+ int* width,
+ int* height,
+ int* nComps,
+ CFX_DIBAttribute* pAttribute) {
+#else // PDF_ENABLE_XFA
+int CCodec_JpegModule::ReadHeader(void* pContext,
+ int* width,
+ int* height,
+ int* nComps) {
+#endif // PDF_ENABLE_XFA
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ if (setjmp(p->m_JumpMark) == -1) {
+ return 1;
+ }
+ int ret = jpeg_read_header(&p->m_Info, true);
+ if (ret == JPEG_SUSPENDED) {
+ return 2;
+ }
+ if (ret != JPEG_HEADER_OK) {
+ return 1;
+ }
+ *width = p->m_Info.image_width;
+ *height = p->m_Info.image_height;
+ *nComps = p->m_Info.num_components;
+#ifdef PDF_ENABLE_XFA
+ _JpegLoadAttribute(&p->m_Info, pAttribute);
+#endif
+ return 0;
+}
+int CCodec_JpegModule::StartScanline(void* pContext, int down_scale) {
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ if (setjmp(p->m_JumpMark) == -1) {
+ return 0;
+ }
+ p->m_Info.scale_denom = down_scale;
+ return jpeg_start_decompress(&p->m_Info);
+}
+FX_BOOL CCodec_JpegModule::ReadScanline(void* pContext,
+ unsigned char* dest_buf) {
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ if (setjmp(p->m_JumpMark) == -1) {
+ return FALSE;
+ }
+ int nlines = jpeg_read_scanlines(&p->m_Info, &dest_buf, 1);
+ return nlines == 1;
+}
+FX_DWORD CCodec_JpegModule::GetAvailInput(void* pContext,
+ uint8_t** avail_buf_ptr) {
+ if (avail_buf_ptr) {
+ *avail_buf_ptr = NULL;
+ if (((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer > 0) {
+ *avail_buf_ptr =
+ (uint8_t*)((FXJPEG_Context*)pContext)->m_SrcMgr.next_input_byte;
+ }
+ }
+ return (FX_DWORD)((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer;
+}
diff --git a/core/fxcodec/codec/fx_codec_jpx_opj.cpp b/core/fxcodec/codec/fx_codec_jpx_opj.cpp
new file mode 100644
index 0000000..486cb92
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_jpx_opj.cpp
@@ -0,0 +1,887 @@
+// 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 <algorithm>
+#include <limits>
+#include <vector>
+
+#include "core/fxcodec/codec/codec_int.h"
+#include "core/include/fpdfapi/fpdf_resource.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxcrt/fx_safe_types.h"
+#include "third_party/lcms2-2.6/include/lcms2.h"
+#include "third_party/libopenjpeg20/openjpeg.h"
+
+static void fx_error_callback(const char* msg, void* client_data) {
+ (void)client_data;
+}
+static void fx_warning_callback(const char* msg, void* client_data) {
+ (void)client_data;
+}
+static void fx_info_callback(const char* msg, void* client_data) {
+ (void)client_data;
+}
+OPJ_SIZE_T opj_read_from_memory(void* p_buffer,
+ OPJ_SIZE_T nb_bytes,
+ void* p_user_data) {
+ DecodeData* srcData = static_cast<DecodeData*>(p_user_data);
+ if (!srcData || !srcData->src_data || srcData->src_size == 0) {
+ return -1;
+ }
+ // Reads at EOF return an error code.
+ if (srcData->offset >= srcData->src_size) {
+ return -1;
+ }
+ OPJ_SIZE_T bufferLength = srcData->src_size - srcData->offset;
+ OPJ_SIZE_T readlength = nb_bytes < bufferLength ? nb_bytes : bufferLength;
+ memcpy(p_buffer, &srcData->src_data[srcData->offset], readlength);
+ srcData->offset += readlength;
+ return readlength;
+}
+OPJ_SIZE_T opj_write_from_memory(void* p_buffer,
+ OPJ_SIZE_T nb_bytes,
+ void* p_user_data) {
+ DecodeData* srcData = static_cast<DecodeData*>(p_user_data);
+ if (!srcData || !srcData->src_data || srcData->src_size == 0) {
+ return -1;
+ }
+ // Writes at EOF return an error code.
+ if (srcData->offset >= srcData->src_size) {
+ return -1;
+ }
+ OPJ_SIZE_T bufferLength = srcData->src_size - srcData->offset;
+ OPJ_SIZE_T writeLength = nb_bytes < bufferLength ? nb_bytes : bufferLength;
+ memcpy(&srcData->src_data[srcData->offset], p_buffer, writeLength);
+ srcData->offset += writeLength;
+ return writeLength;
+}
+OPJ_OFF_T opj_skip_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data) {
+ DecodeData* srcData = static_cast<DecodeData*>(p_user_data);
+ if (!srcData || !srcData->src_data || srcData->src_size == 0) {
+ return -1;
+ }
+ // Offsets are signed and may indicate a negative skip. Do not support this
+ // because of the strange return convention where either bytes skipped or
+ // -1 is returned. Following that convention, a successful relative seek of
+ // -1 bytes would be required to to give the same result as the error case.
+ if (nb_bytes < 0) {
+ return -1;
+ }
+ // FIXME: use std::make_unsigned<OPJ_OFF_T>::type once c++11 lib is OK'd.
+ uint64_t unsignedNbBytes = static_cast<uint64_t>(nb_bytes);
+ // Additionally, the offset may take us beyond the range of a size_t (e.g.
+ // 32-bit platforms). If so, just clamp at EOF.
+ if (unsignedNbBytes >
+ std::numeric_limits<OPJ_SIZE_T>::max() - srcData->offset) {
+ srcData->offset = srcData->src_size;
+ } else {
+ OPJ_SIZE_T checkedNbBytes = static_cast<OPJ_SIZE_T>(unsignedNbBytes);
+ // Otherwise, mimic fseek() semantics to always succeed, even past EOF,
+ // clamping at EOF. We can get away with this since we don't actually
+ // provide negative relative skips from beyond EOF back to inside the
+ // data, which would be the only reason to need to know exactly how far
+ // beyond EOF we are.
+ srcData->offset =
+ std::min(srcData->offset + checkedNbBytes, srcData->src_size);
+ }
+ return nb_bytes;
+}
+OPJ_BOOL opj_seek_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data) {
+ DecodeData* srcData = static_cast<DecodeData*>(p_user_data);
+ if (!srcData || !srcData->src_data || srcData->src_size == 0) {
+ return OPJ_FALSE;
+ }
+ // Offsets are signed and may indicate a negative position, which would
+ // be before the start of the file. Do not support this.
+ if (nb_bytes < 0) {
+ return OPJ_FALSE;
+ }
+ // FIXME: use std::make_unsigned<OPJ_OFF_T>::type once c++11 lib is OK'd.
+ uint64_t unsignedNbBytes = static_cast<uint64_t>(nb_bytes);
+ // Additionally, the offset may take us beyond the range of a size_t (e.g.
+ // 32-bit platforms). If so, just clamp at EOF.
+ if (unsignedNbBytes > std::numeric_limits<OPJ_SIZE_T>::max()) {
+ srcData->offset = srcData->src_size;
+ } else {
+ OPJ_SIZE_T checkedNbBytes = static_cast<OPJ_SIZE_T>(nb_bytes);
+ // Otherwise, mimic fseek() semantics to always succeed, even past EOF,
+ // again clamping at EOF.
+ srcData->offset = std::min(checkedNbBytes, srcData->src_size);
+ }
+ return OPJ_TRUE;
+}
+opj_stream_t* fx_opj_stream_create_memory_stream(DecodeData* data,
+ OPJ_SIZE_T p_size,
+ OPJ_BOOL p_is_read_stream) {
+ opj_stream_t* l_stream = 00;
+ if (!data || !data->src_data || data->src_size <= 0) {
+ return NULL;
+ }
+ l_stream = opj_stream_create(p_size, p_is_read_stream);
+ if (!l_stream) {
+ return NULL;
+ }
+ opj_stream_set_user_data(l_stream, data, NULL);
+ opj_stream_set_user_data_length(l_stream, data->src_size);
+ opj_stream_set_read_function(l_stream, opj_read_from_memory);
+ opj_stream_set_write_function(l_stream, opj_write_from_memory);
+ opj_stream_set_skip_function(l_stream, opj_skip_from_memory);
+ opj_stream_set_seek_function(l_stream, opj_seek_from_memory);
+ return l_stream;
+}
+static void sycc_to_rgb(int offset,
+ int upb,
+ int y,
+ int cb,
+ int cr,
+ int* out_r,
+ int* out_g,
+ int* out_b) {
+ int r, g, b;
+ cb -= offset;
+ cr -= offset;
+ r = y + (int)(1.402 * (float)cr);
+ if (r < 0) {
+ r = 0;
+ } else if (r > upb) {
+ r = upb;
+ }
+ *out_r = r;
+ g = y - (int)(0.344 * (float)cb + 0.714 * (float)cr);
+ if (g < 0) {
+ g = 0;
+ } else if (g > upb) {
+ g = upb;
+ }
+ *out_g = g;
+ b = y + (int)(1.772 * (float)cb);
+ if (b < 0) {
+ b = 0;
+ } else if (b > upb) {
+ b = upb;
+ }
+ *out_b = b;
+}
+static void sycc444_to_rgb(opj_image_t* img) {
+ int prec = img->comps[0].prec;
+ int offset = 1 << (prec - 1);
+ int upb = (1 << prec) - 1;
+ OPJ_UINT32 maxw =
+ std::min(std::min(img->comps[0].w, img->comps[1].w), img->comps[2].w);
+ OPJ_UINT32 maxh =
+ std::min(std::min(img->comps[0].h, img->comps[1].h), img->comps[2].h);
+ FX_SAFE_SIZE_T max_size = maxw;
+ max_size *= maxh;
+ if (!max_size.IsValid())
+ return;
+
+ const int* y = img->comps[0].data;
+ const int* cb = img->comps[1].data;
+ const int* cr = img->comps[2].data;
+ int *d0, *d1, *d2, *r, *g, *b;
+ d0 = r = FX_Alloc(int, max_size.ValueOrDie());
+ d1 = g = FX_Alloc(int, max_size.ValueOrDie());
+ d2 = b = FX_Alloc(int, max_size.ValueOrDie());
+ for (size_t i = 0; i < max_size.ValueOrDie(); ++i) {
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++cb;
+ ++cr;
+ ++r;
+ ++g;
+ ++b;
+ }
+ FX_Free(img->comps[0].data);
+ img->comps[0].data = d0;
+ FX_Free(img->comps[1].data);
+ img->comps[1].data = d1;
+ FX_Free(img->comps[2].data);
+ img->comps[2].data = d2;
+}
+static void sycc422_to_rgb(opj_image_t* img) {
+ int prec = img->comps[0].prec;
+ int offset = 1 << (prec - 1);
+ int upb = (1 << prec) - 1;
+ OPJ_UINT32 maxw =
+ std::min(std::min(img->comps[0].w, img->comps[1].w), img->comps[2].w);
+ OPJ_UINT32 maxh =
+ std::min(std::min(img->comps[0].h, img->comps[1].h), img->comps[2].h);
+ FX_SAFE_SIZE_T max_size = maxw;
+ max_size *= maxh;
+ if (!max_size.IsValid())
+ return;
+
+ const int* y = img->comps[0].data;
+ const int* cb = img->comps[1].data;
+ const int* cr = img->comps[2].data;
+ int *d0, *d1, *d2, *r, *g, *b;
+ d0 = r = FX_Alloc(int, max_size.ValueOrDie());
+ d1 = g = FX_Alloc(int, max_size.ValueOrDie());
+ d2 = b = FX_Alloc(int, max_size.ValueOrDie());
+ for (uint32_t i = 0; i < maxh; ++i) {
+ OPJ_UINT32 j;
+ for (j = 0; j < (maxw & ~static_cast<OPJ_UINT32>(1)); j += 2) {
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++r;
+ ++g;
+ ++b;
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++r;
+ ++g;
+ ++b;
+ ++cb;
+ ++cr;
+ }
+ if (j < maxw) {
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++r;
+ ++g;
+ ++b;
+ ++cb;
+ ++cr;
+ }
+ }
+ FX_Free(img->comps[0].data);
+ img->comps[0].data = d0;
+ FX_Free(img->comps[1].data);
+ img->comps[1].data = d1;
+ FX_Free(img->comps[2].data);
+ img->comps[2].data = d2;
+ img->comps[1].w = maxw;
+ img->comps[1].h = maxh;
+ img->comps[2].w = maxw;
+ img->comps[2].h = maxh;
+ img->comps[1].dx = img->comps[0].dx;
+ img->comps[2].dx = img->comps[0].dx;
+ img->comps[1].dy = img->comps[0].dy;
+ img->comps[2].dy = img->comps[0].dy;
+}
+static bool sycc420_size_is_valid(OPJ_UINT32 y, OPJ_UINT32 cbcr) {
+ if (!y || !cbcr)
+ return false;
+
+ return (cbcr == y / 2) || ((y & 1) && (cbcr == y / 2 + 1));
+}
+static bool sycc420_must_extend_cbcr(OPJ_UINT32 y, OPJ_UINT32 cbcr) {
+ return (y & 1) && (cbcr == y / 2);
+}
+void sycc420_to_rgb(opj_image_t* img) {
+ OPJ_UINT32 prec = img->comps[0].prec;
+ if (!prec)
+ return;
+ OPJ_UINT32 offset = 1 << (prec - 1);
+ OPJ_UINT32 upb = (1 << prec) - 1;
+ OPJ_UINT32 yw = img->comps[0].w;
+ OPJ_UINT32 yh = img->comps[0].h;
+ OPJ_UINT32 cbw = img->comps[1].w;
+ OPJ_UINT32 cbh = img->comps[1].h;
+ OPJ_UINT32 crw = img->comps[2].w;
+ OPJ_UINT32 crh = img->comps[2].h;
+ if (cbw != crw || cbh != crh)
+ return;
+ if (!sycc420_size_is_valid(yw, cbw) || !sycc420_size_is_valid(yh, cbh))
+ return;
+ bool extw = sycc420_must_extend_cbcr(yw, cbw);
+ bool exth = sycc420_must_extend_cbcr(yh, cbh);
+ FX_SAFE_DWORD safeSize = yw;
+ safeSize *= yh;
+ if (!safeSize.IsValid())
+ return;
+ int* r = FX_Alloc(int, safeSize.ValueOrDie());
+ int* g = FX_Alloc(int, safeSize.ValueOrDie());
+ int* b = FX_Alloc(int, safeSize.ValueOrDie());
+ int* d0 = r;
+ int* d1 = g;
+ int* d2 = b;
+ const int* y = img->comps[0].data;
+ const int* cb = img->comps[1].data;
+ const int* cr = img->comps[2].data;
+ const int* ny = nullptr;
+ int* nr = nullptr;
+ int* ng = nullptr;
+ int* nb = nullptr;
+ OPJ_UINT32 i = 0;
+ OPJ_UINT32 j = 0;
+ for (i = 0; i < (yh & ~(OPJ_UINT32)1); i += 2) {
+ ny = y + yw;
+ nr = r + yw;
+ ng = g + yw;
+ nb = b + yw;
+ for (j = 0; j < (yw & ~(OPJ_UINT32)1); j += 2) {
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++r;
+ ++g;
+ ++b;
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++r;
+ ++g;
+ ++b;
+ sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
+ ++ny;
+ ++nr;
+ ++ng;
+ ++nb;
+ sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
+ ++ny;
+ ++nr;
+ ++ng;
+ ++nb;
+ ++cb;
+ ++cr;
+ }
+ if (j < yw) {
+ if (extw) {
+ --cb;
+ --cr;
+ }
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++r;
+ ++g;
+ ++b;
+ sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
+ ++ny;
+ ++nr;
+ ++ng;
+ ++nb;
+ ++cb;
+ ++cr;
+ }
+ y += yw;
+ r += yw;
+ g += yw;
+ b += yw;
+ }
+ if (i < yh) {
+ if (exth) {
+ cb -= cbw;
+ cr -= crw;
+ }
+ for (j = 0; j < (yw & ~(OPJ_UINT32)1); j += 2) {
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++r;
+ ++g;
+ ++b;
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y;
+ ++r;
+ ++g;
+ ++b;
+ ++cb;
+ ++cr;
+ }
+ if (j < yw) {
+ if (extw) {
+ --cb;
+ --cr;
+ }
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ }
+ }
+
+ FX_Free(img->comps[0].data);
+ img->comps[0].data = d0;
+ FX_Free(img->comps[1].data);
+ img->comps[1].data = d1;
+ FX_Free(img->comps[2].data);
+ img->comps[2].data = d2;
+ img->comps[1].w = yw;
+ img->comps[1].h = yh;
+ img->comps[2].w = yw;
+ img->comps[2].h = yh;
+ img->comps[1].w = yw;
+ img->comps[1].h = yh;
+ img->comps[2].w = yw;
+ img->comps[2].h = yh;
+ img->comps[1].dx = img->comps[0].dx;
+ img->comps[2].dx = img->comps[0].dx;
+ img->comps[1].dy = img->comps[0].dy;
+ img->comps[2].dy = img->comps[0].dy;
+}
+void color_sycc_to_rgb(opj_image_t* img) {
+ if (img->numcomps < 3) {
+ img->color_space = OPJ_CLRSPC_GRAY;
+ return;
+ }
+ if ((img->comps[0].dx == 1) && (img->comps[1].dx == 2) &&
+ (img->comps[2].dx == 2) && (img->comps[0].dy == 1) &&
+ (img->comps[1].dy == 2) && (img->comps[2].dy == 2)) {
+ sycc420_to_rgb(img);
+ } else if ((img->comps[0].dx == 1) && (img->comps[1].dx == 2) &&
+ (img->comps[2].dx == 2) && (img->comps[0].dy == 1) &&
+ (img->comps[1].dy == 1) && (img->comps[2].dy == 1)) {
+ sycc422_to_rgb(img);
+ } else if ((img->comps[0].dx == 1) && (img->comps[1].dx == 1) &&
+ (img->comps[2].dx == 1) && (img->comps[0].dy == 1) &&
+ (img->comps[1].dy == 1) && (img->comps[2].dy == 1)) {
+ sycc444_to_rgb(img);
+ } else {
+ return;
+ }
+ img->color_space = OPJ_CLRSPC_SRGB;
+}
+void color_apply_icc_profile(opj_image_t* image) {
+ cmsHPROFILE out_prof;
+ cmsUInt32Number in_type;
+ cmsUInt32Number out_type;
+ int* r;
+ int* g;
+ int* b;
+ int max;
+ cmsHPROFILE in_prof =
+ cmsOpenProfileFromMem(image->icc_profile_buf, image->icc_profile_len);
+ if (!in_prof) {
+ return;
+ }
+ cmsColorSpaceSignature out_space = cmsGetColorSpace(in_prof);
+ cmsUInt32Number intent = cmsGetHeaderRenderingIntent(in_prof);
+ int max_w = (int)image->comps[0].w;
+ int max_h = (int)image->comps[0].h;
+ int prec = (int)image->comps[0].prec;
+ OPJ_COLOR_SPACE oldspace = image->color_space;
+ if (out_space == cmsSigRgbData) {
+ if (prec <= 8) {
+ in_type = TYPE_RGB_8;
+ out_type = TYPE_RGB_8;
+ } else {
+ in_type = TYPE_RGB_16;
+ out_type = TYPE_RGB_16;
+ }
+ out_prof = cmsCreate_sRGBProfile();
+ image->color_space = OPJ_CLRSPC_SRGB;
+ } else if (out_space == cmsSigGrayData) {
+ if (prec <= 8) {
+ in_type = TYPE_GRAY_8;
+ out_type = TYPE_RGB_8;
+ } else {
+ in_type = TYPE_GRAY_16;
+ out_type = TYPE_RGB_16;
+ }
+ out_prof = cmsCreate_sRGBProfile();
+ image->color_space = OPJ_CLRSPC_SRGB;
+ } else if (out_space == cmsSigYCbCrData) {
+ in_type = TYPE_YCbCr_16;
+ out_type = TYPE_RGB_16;
+ out_prof = cmsCreate_sRGBProfile();
+ image->color_space = OPJ_CLRSPC_SRGB;
+ } else {
+ return;
+ }
+ cmsHTRANSFORM transform =
+ cmsCreateTransform(in_prof, in_type, out_prof, out_type, intent, 0);
+ cmsCloseProfile(in_prof);
+ cmsCloseProfile(out_prof);
+ if (!transform) {
+ image->color_space = oldspace;
+ return;
+ }
+ if (image->numcomps > 2) {
+ if (prec <= 8) {
+ unsigned char *inbuf, *outbuf, *in, *out;
+ max = max_w * max_h;
+ cmsUInt32Number nr_samples = max * 3 * sizeof(unsigned char);
+ in = inbuf = FX_Alloc(unsigned char, nr_samples);
+ out = outbuf = FX_Alloc(unsigned char, nr_samples);
+ r = image->comps[0].data;
+ g = image->comps[1].data;
+ b = image->comps[2].data;
+ for (int i = 0; i < max; ++i) {
+ *in++ = (unsigned char)*r++;
+ *in++ = (unsigned char)*g++;
+ *in++ = (unsigned char)*b++;
+ }
+ cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max);
+ r = image->comps[0].data;
+ g = image->comps[1].data;
+ b = image->comps[2].data;
+ for (int i = 0; i < max; ++i) {
+ *r++ = (int)*out++;
+ *g++ = (int)*out++;
+ *b++ = (int)*out++;
+ }
+ FX_Free(inbuf);
+ FX_Free(outbuf);
+ } else {
+ unsigned short *inbuf, *outbuf, *in, *out;
+ max = max_w * max_h;
+ cmsUInt32Number nr_samples = max * 3 * sizeof(unsigned short);
+ in = inbuf = FX_Alloc(unsigned short, nr_samples);
+ out = outbuf = FX_Alloc(unsigned short, nr_samples);
+ r = image->comps[0].data;
+ g = image->comps[1].data;
+ b = image->comps[2].data;
+ for (int i = 0; i < max; ++i) {
+ *in++ = (unsigned short)*r++;
+ *in++ = (unsigned short)*g++;
+ *in++ = (unsigned short)*b++;
+ }
+ cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max);
+ r = image->comps[0].data;
+ g = image->comps[1].data;
+ b = image->comps[2].data;
+ for (int i = 0; i < max; ++i) {
+ *r++ = (int)*out++;
+ *g++ = (int)*out++;
+ *b++ = (int)*out++;
+ }
+ FX_Free(inbuf);
+ FX_Free(outbuf);
+ }
+ } else {
+ unsigned char *in, *inbuf, *out, *outbuf;
+ max = max_w * max_h;
+ cmsUInt32Number nr_samples =
+ (cmsUInt32Number)max * 3 * sizeof(unsigned char);
+ in = inbuf = FX_Alloc(unsigned char, nr_samples);
+ out = outbuf = FX_Alloc(unsigned char, nr_samples);
+ image->comps = (opj_image_comp_t*)realloc(
+ image->comps, (image->numcomps + 2) * sizeof(opj_image_comp_t));
+ if (image->numcomps == 2) {
+ image->comps[3] = image->comps[1];
+ }
+ image->comps[1] = image->comps[0];
+ image->comps[2] = image->comps[0];
+ image->comps[1].data = FX_Alloc(int, (size_t)max);
+ FXSYS_memset(image->comps[1].data, 0, sizeof(int) * (size_t)max);
+ image->comps[2].data = FX_Alloc(int, (size_t)max);
+ FXSYS_memset(image->comps[2].data, 0, sizeof(int) * (size_t)max);
+ image->numcomps += 2;
+ r = image->comps[0].data;
+ for (int i = 0; i < max; ++i) {
+ *in++ = (unsigned char)*r++;
+ }
+ cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max);
+ r = image->comps[0].data;
+ g = image->comps[1].data;
+ b = image->comps[2].data;
+ for (int i = 0; i < max; ++i) {
+ *r++ = (int)*out++;
+ *g++ = (int)*out++;
+ *b++ = (int)*out++;
+ }
+ FX_Free(inbuf);
+ FX_Free(outbuf);
+ }
+ cmsDeleteTransform(transform);
+}
+void color_apply_conversion(opj_image_t* image) {
+ int* row;
+ int enumcs, numcomps;
+ numcomps = image->numcomps;
+ if (numcomps < 3) {
+ return;
+ }
+ row = (int*)image->icc_profile_buf;
+ enumcs = row[0];
+ if (enumcs == 14) {
+ int *L, *a, *b, *red, *green, *blue, *src0, *src1, *src2;
+ double rl, ol, ra, oa, rb, ob, prec0, prec1, prec2;
+ double minL, maxL, mina, maxa, minb, maxb;
+ unsigned int default_type;
+ unsigned int i, max;
+ cmsHPROFILE in, out;
+ cmsHTRANSFORM transform;
+ cmsUInt16Number RGB[3];
+ cmsCIELab Lab;
+ in = cmsCreateLab4Profile(NULL);
+ out = cmsCreate_sRGBProfile();
+ transform = cmsCreateTransform(in, TYPE_Lab_DBL, out, TYPE_RGB_16,
+ INTENT_PERCEPTUAL, 0);
+ cmsCloseProfile(in);
+ cmsCloseProfile(out);
+ if (!transform) {
+ return;
+ }
+ prec0 = (double)image->comps[0].prec;
+ prec1 = (double)image->comps[1].prec;
+ prec2 = (double)image->comps[2].prec;
+ default_type = row[1];
+ if (default_type == 0x44454600) {
+ rl = 100;
+ ra = 170;
+ rb = 200;
+ ol = 0;
+ oa = pow(2, prec1 - 1);
+ ob = pow(2, prec2 - 2) + pow(2, prec2 - 3);
+ } else {
+ rl = row[2];
+ ra = row[4];
+ rb = row[6];
+ ol = row[3];
+ oa = row[5];
+ ob = row[7];
+ }
+ L = src0 = image->comps[0].data;
+ a = src1 = image->comps[1].data;
+ b = src2 = image->comps[2].data;
+ max = image->comps[0].w * image->comps[0].h;
+ red = FX_Alloc(int, max);
+ image->comps[0].data = red;
+ green = FX_Alloc(int, max);
+ image->comps[1].data = green;
+ blue = FX_Alloc(int, max);
+ image->comps[2].data = blue;
+ minL = -(rl * ol) / (pow(2, prec0) - 1);
+ maxL = minL + rl;
+ mina = -(ra * oa) / (pow(2, prec1) - 1);
+ maxa = mina + ra;
+ minb = -(rb * ob) / (pow(2, prec2) - 1);
+ maxb = minb + rb;
+ for (i = 0; i < max; ++i) {
+ Lab.L = minL + (double)(*L) * (maxL - minL) / (pow(2, prec0) - 1);
+ ++L;
+ Lab.a = mina + (double)(*a) * (maxa - mina) / (pow(2, prec1) - 1);
+ ++a;
+ Lab.b = minb + (double)(*b) * (maxb - minb) / (pow(2, prec2) - 1);
+ ++b;
+ cmsDoTransform(transform, &Lab, RGB, 1);
+ *red++ = RGB[0];
+ *green++ = RGB[1];
+ *blue++ = RGB[2];
+ }
+ cmsDeleteTransform(transform);
+ FX_Free(src0);
+ FX_Free(src1);
+ FX_Free(src2);
+ image->color_space = OPJ_CLRSPC_SRGB;
+ image->comps[0].prec = 16;
+ image->comps[1].prec = 16;
+ image->comps[2].prec = 16;
+ return;
+ }
+}
+class CJPX_Decoder {
+ public:
+ explicit CJPX_Decoder(CPDF_ColorSpace* cs);
+ ~CJPX_Decoder();
+ FX_BOOL Init(const unsigned char* src_data, FX_DWORD src_size);
+ void GetInfo(FX_DWORD* width, FX_DWORD* height, FX_DWORD* components);
+ bool Decode(uint8_t* dest_buf,
+ int pitch,
+ const std::vector<uint8_t>& offsets);
+
+ private:
+ const uint8_t* m_SrcData;
+ FX_DWORD m_SrcSize;
+ opj_image_t* image;
+ opj_codec_t* l_codec;
+ opj_stream_t* l_stream;
+ const CPDF_ColorSpace* const m_ColorSpace;
+};
+
+CJPX_Decoder::CJPX_Decoder(CPDF_ColorSpace* cs)
+ : image(nullptr), l_codec(nullptr), l_stream(nullptr), m_ColorSpace(cs) {}
+
+CJPX_Decoder::~CJPX_Decoder() {
+ if (l_codec) {
+ opj_destroy_codec(l_codec);
+ }
+ if (l_stream) {
+ opj_stream_destroy(l_stream);
+ }
+ if (image) {
+ opj_image_destroy(image);
+ }
+}
+
+FX_BOOL CJPX_Decoder::Init(const unsigned char* src_data, FX_DWORD src_size) {
+ static const unsigned char szJP2Header[] = {
+ 0x00, 0x00, 0x00, 0x0c, 0x6a, 0x50, 0x20, 0x20, 0x0d, 0x0a, 0x87, 0x0a};
+ if (!src_data || src_size < sizeof(szJP2Header))
+ return FALSE;
+
+ image = NULL;
+ m_SrcData = src_data;
+ m_SrcSize = src_size;
+ DecodeData srcData(const_cast<unsigned char*>(src_data), src_size);
+ l_stream = fx_opj_stream_create_memory_stream(&srcData,
+ OPJ_J2K_STREAM_CHUNK_SIZE, 1);
+ if (!l_stream) {
+ return FALSE;
+ }
+ opj_dparameters_t parameters;
+ opj_set_default_decoder_parameters(¶meters);
+ parameters.decod_format = 0;
+ parameters.cod_format = 3;
+ if (FXSYS_memcmp(m_SrcData, szJP2Header, sizeof(szJP2Header)) == 0) {
+ l_codec = opj_create_decompress(OPJ_CODEC_JP2);
+ parameters.decod_format = 1;
+ } else {
+ l_codec = opj_create_decompress(OPJ_CODEC_J2K);
+ }
+ if (!l_codec) {
+ return FALSE;
+ }
+ if (m_ColorSpace && m_ColorSpace->GetFamily() == PDFCS_INDEXED)
+ parameters.flags |= OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
+ opj_set_info_handler(l_codec, fx_info_callback, 00);
+ opj_set_warning_handler(l_codec, fx_warning_callback, 00);
+ opj_set_error_handler(l_codec, fx_error_callback, 00);
+ if (!opj_setup_decoder(l_codec, ¶meters)) {
+ return FALSE;
+ }
+ if (!opj_read_header(l_stream, l_codec, &image)) {
+ image = NULL;
+ return FALSE;
+ }
+ image->pdfium_use_colorspace = !!m_ColorSpace;
+
+ if (!parameters.nb_tile_to_decode) {
+ if (!opj_set_decode_area(l_codec, image, parameters.DA_x0, parameters.DA_y0,
+ parameters.DA_x1, parameters.DA_y1)) {
+ opj_image_destroy(image);
+ image = NULL;
+ return FALSE;
+ }
+ if (!(opj_decode(l_codec, l_stream, image) &&
+ opj_end_decompress(l_codec, l_stream))) {
+ opj_image_destroy(image);
+ image = NULL;
+ return FALSE;
+ }
+ } else {
+ if (!opj_get_decoded_tile(l_codec, l_stream, image,
+ parameters.tile_index)) {
+ return FALSE;
+ }
+ }
+ opj_stream_destroy(l_stream);
+ l_stream = NULL;
+ if (image->color_space != OPJ_CLRSPC_SYCC && image->numcomps == 3 &&
+ image->comps[0].dx == image->comps[0].dy && image->comps[1].dx != 1) {
+ image->color_space = OPJ_CLRSPC_SYCC;
+ } else if (image->numcomps <= 2) {
+ image->color_space = OPJ_CLRSPC_GRAY;
+ }
+ if (image->color_space == OPJ_CLRSPC_SYCC) {
+ color_sycc_to_rgb(image);
+ }
+ if (image->icc_profile_buf) {
+ FX_Free(image->icc_profile_buf);
+ image->icc_profile_buf = NULL;
+ image->icc_profile_len = 0;
+ }
+ if (!image) {
+ return FALSE;
+ }
+ return TRUE;
+}
+
+void CJPX_Decoder::GetInfo(FX_DWORD* width,
+ FX_DWORD* height,
+ FX_DWORD* components) {
+ *width = (FX_DWORD)image->x1;
+ *height = (FX_DWORD)image->y1;
+ *components = (FX_DWORD)image->numcomps;
+}
+
+bool CJPX_Decoder::Decode(uint8_t* dest_buf,
+ int pitch,
+ const std::vector<uint8_t>& offsets) {
+ if (image->comps[0].w != image->x1 || image->comps[0].h != image->y1)
+ return false;
+
+ if (pitch<(int)(image->comps[0].w * 8 * image->numcomps + 31)>> 5 << 2)
+ return false;
+
+ FXSYS_memset(dest_buf, 0xff, image->y1 * pitch);
+ std::vector<uint8_t*> channel_bufs(image->numcomps);
+ std::vector<int> adjust_comps(image->numcomps);
+ for (uint32_t i = 0; i < image->numcomps; i++) {
+ channel_bufs[i] = dest_buf + offsets[i];
+ adjust_comps[i] = image->comps[i].prec - 8;
+ if (i > 0) {
+ if (image->comps[i].dx != image->comps[i - 1].dx ||
+ image->comps[i].dy != image->comps[i - 1].dy ||
+ image->comps[i].prec != image->comps[i - 1].prec) {
+ return false;
+ }
+ }
+ }
+ int width = image->comps[0].w;
+ int height = image->comps[0].h;
+ for (uint32_t channel = 0; channel < image->numcomps; ++channel) {
+ uint8_t* pChannel = channel_bufs[channel];
+ if (adjust_comps[channel] < 0) {
+ for (int row = 0; row < height; ++row) {
+ uint8_t* pScanline = pChannel + row * pitch;
+ for (int col = 0; col < width; ++col) {
+ uint8_t* pPixel = pScanline + col * image->numcomps;
+ int src = image->comps[channel].data[row * width + col];
+ src += image->comps[channel].sgnd
+ ? 1 << (image->comps[channel].prec - 1)
+ : 0;
+ if (adjust_comps[channel] > 0) {
+ *pPixel = 0;
+ } else {
+ *pPixel = (uint8_t)(src << -adjust_comps[channel]);
+ }
+ }
+ }
+ } else {
+ for (int row = 0; row < height; ++row) {
+ uint8_t* pScanline = pChannel + row * pitch;
+ for (int col = 0; col < width; ++col) {
+ uint8_t* pPixel = pScanline + col * image->numcomps;
+ if (!image->comps[channel].data) {
+ continue;
+ }
+ int src = image->comps[channel].data[row * width + col];
+ src += image->comps[channel].sgnd
+ ? 1 << (image->comps[channel].prec - 1)
+ : 0;
+ if (adjust_comps[channel] - 1 < 0) {
+ *pPixel = (uint8_t)((src >> adjust_comps[channel]));
+ } else {
+ int tmpPixel = (src >> adjust_comps[channel]) +
+ ((src >> (adjust_comps[channel] - 1)) % 2);
+ if (tmpPixel > 255) {
+ tmpPixel = 255;
+ } else if (tmpPixel < 0) {
+ tmpPixel = 0;
+ }
+ *pPixel = (uint8_t)tmpPixel;
+ }
+ }
+ }
+ }
+ }
+ return true;
+}
+
+CCodec_JpxModule::CCodec_JpxModule() {}
+CCodec_JpxModule::~CCodec_JpxModule() {}
+
+CJPX_Decoder* CCodec_JpxModule::CreateDecoder(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CPDF_ColorSpace* cs) {
+ std::unique_ptr<CJPX_Decoder> decoder(new CJPX_Decoder(cs));
+ return decoder->Init(src_buf, src_size) ? decoder.release() : nullptr;
+}
+
+void CCodec_JpxModule::GetImageInfo(CJPX_Decoder* pDecoder,
+ FX_DWORD* width,
+ FX_DWORD* height,
+ FX_DWORD* components) {
+ pDecoder->GetInfo(width, height, components);
+}
+
+bool CCodec_JpxModule::Decode(CJPX_Decoder* pDecoder,
+ uint8_t* dest_data,
+ int pitch,
+ const std::vector<uint8_t>& offsets) {
+ return pDecoder->Decode(dest_data, pitch, offsets);
+}
+
+void CCodec_JpxModule::DestroyDecoder(CJPX_Decoder* pDecoder) {
+ delete pDecoder;
+}
diff --git a/core/fxcodec/codec/fx_codec_jpx_unittest.cpp b/core/fxcodec/codec/fx_codec_jpx_unittest.cpp
new file mode 100644
index 0000000..d58b152
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_jpx_unittest.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.
+
+#include <stdint.h>
+
+#include <limits>
+
+#include "core/fxcodec/codec/codec_int.h"
+#include "testing/fx_string_testhelpers.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+static const OPJ_OFF_T kSkipError = static_cast<OPJ_OFF_T>(-1);
+static const OPJ_SIZE_T kReadError = static_cast<OPJ_SIZE_T>(-1);
+static const OPJ_SIZE_T kWriteError = static_cast<OPJ_SIZE_T>(-1);
+
+static unsigned char stream_data[] = {
+ 0x00, 0x01, 0x02, 0x03,
+ 0x84, 0x85, 0x86, 0x87, // Include some hi-bytes, too.
+};
+
+TEST(fxcodec, DecodeDataNullDecodeData) {
+ unsigned char buffer[16];
+ DecodeData* ptr = nullptr;
+
+ // Error codes, not segvs, should callers pass us a NULL pointer.
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, sizeof(buffer), ptr));
+ EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, sizeof(buffer), ptr));
+ EXPECT_EQ(kSkipError, opj_skip_from_memory(1, ptr));
+ EXPECT_FALSE(opj_seek_from_memory(1, ptr));
+}
+
+TEST(fxcodec, DecodeDataNullStream) {
+ DecodeData dd(nullptr, 0);
+ unsigned char buffer[16];
+
+ // Reads of size 0 do nothing but return an error code.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 0, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+
+ // Reads of nonzero size do nothing but return an error code.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, sizeof(buffer), &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+
+ // writes of size 0 do nothing but return an error code.
+ EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, 0, &dd));
+
+ // writes of nonzero size do nothing but return an error code.
+ EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, sizeof(buffer), &dd));
+
+ // Skips of size 0 always return an error code.
+ EXPECT_EQ(kSkipError, opj_skip_from_memory(0, &dd));
+
+ // Skips of nonzero size always return an error code.
+ EXPECT_EQ(kSkipError, opj_skip_from_memory(1, &dd));
+
+ // Seeks to 0 offset return in error.
+ EXPECT_FALSE(opj_seek_from_memory(0, &dd));
+
+ // Seeks to non-zero offsets return in error.
+ EXPECT_FALSE(opj_seek_from_memory(1, &dd));
+}
+
+TEST(fxcodec, DecodeDataZeroSize) {
+ DecodeData dd(stream_data, 0);
+ unsigned char buffer[16];
+
+ // Reads of size 0 do nothing but return an error code.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 0, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+
+ // Reads of nonzero size do nothing but return an error code.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, sizeof(buffer), &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+
+ // writes of size 0 do nothing but return an error code.
+ EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, 0, &dd));
+
+ // writes of nonzero size do nothing but return an error code.
+ EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, sizeof(buffer), &dd));
+
+ // Skips of size 0 always return an error code.
+ EXPECT_EQ(kSkipError, opj_skip_from_memory(0, &dd));
+
+ // Skips of nonzero size always return an error code.
+ EXPECT_EQ(kSkipError, opj_skip_from_memory(1, &dd));
+
+ // Seeks to 0 offset return in error.
+ EXPECT_FALSE(opj_seek_from_memory(0, &dd));
+
+ // Seeks to non-zero offsets return in error.
+ EXPECT_FALSE(opj_seek_from_memory(1, &dd));
+}
+
+TEST(fxcodec, DecodeDataReadInBounds) {
+ unsigned char buffer[16];
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Exact sized read in a single call.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(8u, opj_read_from_memory(buffer, sizeof(buffer), &dd));
+ EXPECT_EQ(0x00, buffer[0]);
+ EXPECT_EQ(0x01, buffer[1]);
+ EXPECT_EQ(0x02, buffer[2]);
+ EXPECT_EQ(0x03, buffer[3]);
+ EXPECT_EQ(0x84, buffer[4]);
+ EXPECT_EQ(0x85, buffer[5]);
+ EXPECT_EQ(0x86, buffer[6]);
+ EXPECT_EQ(0x87, buffer[7]);
+ EXPECT_EQ(0xbd, buffer[8]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Simple read.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(2u, opj_read_from_memory(buffer, 2, &dd));
+ EXPECT_EQ(0x00, buffer[0]);
+ EXPECT_EQ(0x01, buffer[1]);
+ EXPECT_EQ(0xbd, buffer[2]);
+
+ // Read of size 0 doesn't affect things.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(0u, opj_read_from_memory(buffer, 0, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+
+ // Read exactly up to end of data.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(6u, opj_read_from_memory(buffer, 6, &dd));
+ EXPECT_EQ(0x02, buffer[0]);
+ EXPECT_EQ(0x03, buffer[1]);
+ EXPECT_EQ(0x84, buffer[2]);
+ EXPECT_EQ(0x85, buffer[3]);
+ EXPECT_EQ(0x86, buffer[4]);
+ EXPECT_EQ(0x87, buffer[5]);
+ EXPECT_EQ(0xbd, buffer[6]);
+
+ // Read of size 0 at EOF is still an error.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 0, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+ }
+}
+
+TEST(fxcodec, DecodeDataReadBeyondBounds) {
+ unsigned char buffer[16];
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Read beyond bounds in a single step.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(8u, opj_read_from_memory(buffer, sizeof(buffer) + 1, &dd));
+ EXPECT_EQ(0x00, buffer[0]);
+ EXPECT_EQ(0x01, buffer[1]);
+ EXPECT_EQ(0x02, buffer[2]);
+ EXPECT_EQ(0x03, buffer[3]);
+ EXPECT_EQ(0x84, buffer[4]);
+ EXPECT_EQ(0x85, buffer[5]);
+ EXPECT_EQ(0x86, buffer[6]);
+ EXPECT_EQ(0x87, buffer[7]);
+ EXPECT_EQ(0xbd, buffer[8]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Read well beyond bounds in a single step.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(8u, opj_read_from_memory(
+ buffer, std::numeric_limits<OPJ_SIZE_T>::max(), &dd));
+ EXPECT_EQ(0x00, buffer[0]);
+ EXPECT_EQ(0x01, buffer[1]);
+ EXPECT_EQ(0x02, buffer[2]);
+ EXPECT_EQ(0x03, buffer[3]);
+ EXPECT_EQ(0x84, buffer[4]);
+ EXPECT_EQ(0x85, buffer[5]);
+ EXPECT_EQ(0x86, buffer[6]);
+ EXPECT_EQ(0x87, buffer[7]);
+ EXPECT_EQ(0xbd, buffer[8]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Read of size 6 gets first 6 bytes.
+ // rest of buffer intact.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(6u, opj_read_from_memory(buffer, 6, &dd));
+ EXPECT_EQ(0x00, buffer[0]);
+ EXPECT_EQ(0x01, buffer[1]);
+ EXPECT_EQ(0x02, buffer[2]);
+ EXPECT_EQ(0x03, buffer[3]);
+ EXPECT_EQ(0x84, buffer[4]);
+ EXPECT_EQ(0x85, buffer[5]);
+ EXPECT_EQ(0xbd, buffer[6]);
+
+ // Read of size 6 gets remaining two bytes.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(2u, opj_read_from_memory(buffer, 6, &dd));
+ EXPECT_EQ(0x86, buffer[0]);
+ EXPECT_EQ(0x87, buffer[1]);
+ EXPECT_EQ(0xbd, buffer[2]);
+
+ // Read of 6 more gets nothing and leaves rest of buffer intact.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 6, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+ }
+}
+
+TEST(fxcodec, DecodeDataWriteInBounds) {
+ unsigned char stream[16];
+ static unsigned char buffer_data[] = {
+ 0x00, 0x01, 0x02, 0x03, 0x80, 0x80, 0x81, 0x82, 0x83, 0x84,
+ };
+ {
+ // Pretend the stream can only hold 4 bytes.
+ DecodeData dd(stream, 4);
+
+ memset(stream, 0xbd, sizeof(stream));
+ EXPECT_EQ(4u, opj_write_from_memory(buffer_data, 4, &dd));
+ EXPECT_EQ(0x00, stream[0]);
+ EXPECT_EQ(0x01, stream[1]);
+ EXPECT_EQ(0x02, stream[2]);
+ EXPECT_EQ(0x03, stream[3]);
+ EXPECT_EQ(0xbd, stream[4]);
+ }
+ {
+ // Pretend the stream can only hold 4 bytes.
+ DecodeData dd(stream, 4);
+
+ memset(stream, 0xbd, sizeof(stream));
+ EXPECT_EQ(2u, opj_write_from_memory(buffer_data, 2, &dd));
+ EXPECT_EQ(2u, opj_write_from_memory(buffer_data, 2, &dd));
+ EXPECT_EQ(0x00, stream[0]);
+ EXPECT_EQ(0x01, stream[1]);
+ EXPECT_EQ(0x00, stream[2]);
+ EXPECT_EQ(0x01, stream[3]);
+ EXPECT_EQ(0xbd, stream[4]);
+ }
+}
+
+TEST(fxcodec, DecodeDataWriteBeyondBounds) {
+ unsigned char stream[16];
+ static unsigned char buffer_data[] = {
+ 0x10, 0x11, 0x12, 0x13, 0x94, 0x95, 0x96, 0x97,
+ };
+ {
+ // Pretend the stream can only hold 4 bytes.
+ DecodeData dd(stream, 4);
+
+ // Write ending past EOF transfers up til EOF.
+ memset(stream, 0xbd, sizeof(stream));
+ EXPECT_EQ(4u, opj_write_from_memory(buffer_data, 5, &dd));
+ EXPECT_EQ(0x10, stream[0]);
+ EXPECT_EQ(0x11, stream[1]);
+ EXPECT_EQ(0x12, stream[2]);
+ EXPECT_EQ(0x13, stream[3]);
+ EXPECT_EQ(0xbd, stream[4]);
+
+ // Subsequent writes fail.
+ memset(stream, 0xbd, sizeof(stream));
+ EXPECT_EQ(kWriteError, opj_write_from_memory(buffer_data, 5, &dd));
+ EXPECT_EQ(0xbd, stream[0]);
+ }
+ {
+ // Pretend the stream can only hold 4 bytes.
+ DecodeData dd(stream, 4);
+
+ // Write ending past EOF (two steps) transfers up til EOF.
+ memset(stream, 0xbd, sizeof(stream));
+ EXPECT_EQ(2u, opj_write_from_memory(buffer_data, 2, &dd));
+ EXPECT_EQ(2u, opj_write_from_memory(buffer_data, 4, &dd));
+ EXPECT_EQ(0x10, stream[0]);
+ EXPECT_EQ(0x11, stream[1]);
+ EXPECT_EQ(0x10, stream[2]);
+ EXPECT_EQ(0x11, stream[3]);
+ EXPECT_EQ(0xbd, stream[4]);
+
+ // Subsequent writes fail.
+ memset(stream, 0xbd, sizeof(stream));
+ EXPECT_EQ(kWriteError, opj_write_from_memory(buffer_data, 5, &dd));
+ EXPECT_EQ(0xbd, stream[0]);
+ }
+}
+
+// Note: Some care needs to be taken here because the skip/seek functions
+// take OPJ_OFF_T's as arguments, which are typically a signed type.
+TEST(fxcodec, DecodeDataSkip) {
+ unsigned char buffer[16];
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Skiping within buffer is allowed.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(1, opj_skip_from_memory(1, &dd));
+ EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x01, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Skiping 0 bytes changes nothing.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(0, opj_skip_from_memory(0, &dd));
+ EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x02, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Skiping to EOS-1 is possible.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(4, opj_skip_from_memory(4, &dd));
+ EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x87, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Next read fails.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Skiping directly to EOS is allowed.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(8, opj_skip_from_memory(8, &dd));
+
+ // Next read fails.
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Skipping beyond end of stream is allowed and returns full distance.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(9, opj_skip_from_memory(9, &dd));
+
+ // Next read fails.
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Skipping way beyond EOS is allowd, doesn't wrap, and returns
+ // full distance.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(4, opj_skip_from_memory(4, &dd));
+ EXPECT_EQ(std::numeric_limits<OPJ_OFF_T>::max(),
+ opj_skip_from_memory(std::numeric_limits<OPJ_OFF_T>::max(), &dd));
+
+ // Next read fails. If it succeeds, it may mean we wrapped.
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Negative skip within buffer not is allowed, position unchanged.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(4, opj_skip_from_memory(4, &dd));
+ EXPECT_EQ(kSkipError, opj_skip_from_memory(-2, &dd));
+
+ // Next read succeeds as if nothing has happenned.
+ EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x84, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Negative skip before buffer is not allowed, position unchanged.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(kSkipError, opj_skip_from_memory(-4, &dd));
+
+ // Next read succeeds as if nothing has happenned.
+ EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x85, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Negative skip way before buffer is not allowed, doesn't wrap
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(4, opj_skip_from_memory(4, &dd));
+ EXPECT_EQ(kSkipError,
+ opj_skip_from_memory(std::numeric_limits<OPJ_OFF_T>::min(), &dd));
+
+ // Next read succeeds. If it fails, it may mean we wrapped.
+ EXPECT_EQ(1, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x84, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+ }
+ {
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Negative skip after EOS isn't alowed, still EOS.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_EQ(8, opj_skip_from_memory(8, &dd));
+ EXPECT_EQ(kSkipError, opj_skip_from_memory(-4, &dd));
+
+ // Next read fails.
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+ }
+}
+
+TEST(fxcodec, DecodeDataSeek) {
+ unsigned char buffer[16];
+ DecodeData dd(stream_data, sizeof(stream_data));
+
+ // Seeking within buffer is allowed and read succeeds
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_TRUE(opj_seek_from_memory(1, &dd));
+ EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x01, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Seeking before start returns error leaving position unchanged.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_FALSE(opj_seek_from_memory(-1, &dd));
+ EXPECT_EQ(1, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x02, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Seeking way before start returns error leaving position unchanged.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_FALSE(
+ opj_seek_from_memory(std::numeric_limits<OPJ_OFF_T>::min(), &dd));
+ EXPECT_EQ(1, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x03, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Seeking exactly to EOS is allowed but read fails.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_TRUE(opj_seek_from_memory(8, &dd));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+
+ // Seeking back to zero offset is allowed and read succeeds.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_TRUE(opj_seek_from_memory(0, &dd));
+ EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x00, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Seeking beyond end of stream is allowed but read fails.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_TRUE(opj_seek_from_memory(16, &dd));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+
+ // Seeking within buffer after seek past EOF restores good state.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_TRUE(opj_seek_from_memory(4, &dd));
+ EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0x84, buffer[0]);
+ EXPECT_EQ(0xbd, buffer[1]);
+
+ // Seeking way beyond EOS is allowed, doesn't wrap, and read fails.
+ memset(buffer, 0xbd, sizeof(buffer));
+ EXPECT_TRUE(opj_seek_from_memory(std::numeric_limits<OPJ_OFF_T>::max(), &dd));
+ EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
+ EXPECT_EQ(0xbd, buffer[0]);
+}
+
+TEST(fxcodec, YUV420ToRGB) {
+ opj_image_comp_t u;
+ memset(&u, 0, sizeof(u));
+ u.dx = 1;
+ u.dy = 1;
+ u.w = 16;
+ u.h = 16;
+ u.prec = 8;
+ u.bpp = 8;
+ opj_image_comp_t v;
+ memset(&v, 0, sizeof(v));
+ v.dx = 1;
+ v.dy = 1;
+ v.w = 16;
+ v.h = 16;
+ v.prec = 8;
+ v.bpp = 8;
+ opj_image_comp_t y;
+ memset(&y, 0, sizeof(y));
+ y.dx = 1;
+ y.dy = 1;
+ y.prec = 8;
+ y.bpp = 8;
+ opj_image_t img;
+ memset(&img, 0, sizeof(img));
+ img.numcomps = 3;
+ img.color_space = OPJ_CLRSPC_SYCC;
+ img.comps = FX_Alloc(opj_image_comp_t, 3);
+ const struct {
+ OPJ_UINT32 w;
+ bool expected;
+ } cases[] = {{0, false}, {1, false}, {30, false}, {31, true},
+ {32, true}, {33, true}, {34, false}, {UINT_MAX, false}};
+ for (int i = 0; i < sizeof(cases) / sizeof(cases[0]); ++i) {
+ y.w = cases[i].w;
+ y.h = y.w;
+ img.x1 = y.w;
+ img.y1 = y.h;
+ y.data = FX_Alloc(OPJ_INT32, y.w * y.h);
+ memset(y.data, 1, y.w * y.h * sizeof(OPJ_INT32));
+ u.data = FX_Alloc(OPJ_INT32, u.w * u.h);
+ memset(u.data, 0, u.w * u.h * sizeof(OPJ_INT32));
+ v.data = FX_Alloc(OPJ_INT32, v.w * v.h);
+ memset(v.data, 0, v.w * v.h * sizeof(OPJ_INT32));
+ img.comps[0] = y;
+ img.comps[1] = u;
+ img.comps[2] = v;
+ sycc420_to_rgb(&img);
+ if (cases[i].expected) {
+ EXPECT_EQ(img.comps[0].w, img.comps[1].w);
+ EXPECT_EQ(img.comps[0].h, img.comps[1].h);
+ EXPECT_EQ(img.comps[0].w, img.comps[2].w);
+ EXPECT_EQ(img.comps[0].h, img.comps[2].h);
+ } else {
+ EXPECT_NE(img.comps[0].w, img.comps[1].w);
+ EXPECT_NE(img.comps[0].h, img.comps[1].h);
+ EXPECT_NE(img.comps[0].w, img.comps[2].w);
+ EXPECT_NE(img.comps[0].h, img.comps[2].h);
+ }
+ FX_Free(img.comps[0].data);
+ FX_Free(img.comps[1].data);
+ FX_Free(img.comps[2].data);
+ }
+ FX_Free(img.comps);
+}
diff --git a/core/fxcodec/codec/fx_codec_png.cpp b/core/fxcodec/codec/fx_codec_png.cpp
new file mode 100644
index 0000000..a3882ba
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_png.cpp
@@ -0,0 +1,254 @@
+// 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 <algorithm>
+
+#include "core/fxcodec/codec/codec_int.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxge/fx_dib.h"
+
+extern "C" {
+#undef FAR
+#include "third_party/libpng16/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_memset(pAttribute->m_strTime, 0, sizeof(pAttribute->m_strTime));
+ FXSYS_snprintf((FX_CHAR*)pAttribute->m_strTime,
+ sizeof(pAttribute->m_strTime), "%4d:%2d:%2d %2d:%2d:%2d",
+ t->year, t->month, t->day, t->hour, t->minute, t->second);
+ pAttribute->m_strTime[sizeof(pAttribute->m_strTime) - 1] = 0;
+ bTime = 1;
+ }
+#endif
+#if defined(PNG_TEXT_SUPPORTED)
+ int i;
+ FX_STRSIZE len;
+ const FX_CHAR* 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 = FXSYS_strlen(text[i].key);
+ buf = "Time";
+ if (!FXSYS_memcmp(buf, text[i].key, std::min(len, FXSYS_strlen(buf)))) {
+ if (!bTime) {
+ FXSYS_memset(pAttribute->m_strTime, 0, sizeof(pAttribute->m_strTime));
+ FXSYS_memcpy(
+ pAttribute->m_strTime, text[i].text,
+ std::min(sizeof(pAttribute->m_strTime) - 1, text[i].text_length));
+ }
+ } else {
+ buf = "Author";
+ if (!FXSYS_memcmp(buf, text[i].key, std::min(len, FXSYS_strlen(buf)))) {
+ pAttribute->m_strAuthor.Empty();
+ pAttribute->m_strAuthor.Load((uint8_t*)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) {
+ 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;
+ uint8_t* 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) {
+ 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(uint8_t, 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) {
+ 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) {
+ png_destroy_read_struct(&(p->png_ptr), &(p->info_ptr), (png_infopp)NULL);
+ p->m_FreeFunc(p);
+ }
+}
+FX_BOOL CCodec_PngModule::Input(void* pContext,
+ const uint8_t* 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, (uint8_t*)src_buf, src_size);
+ return TRUE;
+}
diff --git a/core/fxcodec/codec/fx_codec_progress.cpp b/core/fxcodec/codec/fx_codec_progress.cpp
new file mode 100644
index 0000000..b22d203
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_progress.cpp
@@ -0,0 +1,2301 @@
+// 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 "core/fxcodec/codec/fx_codec_progress.h"
+
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxge/fx_dib.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 = (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(uint8_t, (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 = ((FX_FLOAT)j - base) / scale;
+ double dest_end = ((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(uint8_t, size);
+ if (m_pWeightTables == NULL) {
+ return;
+ }
+ FXSYS_memset(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(uint8_t, size);
+ if (m_pWeightTables == NULL) {
+ return;
+ }
+ FXSYS_memset(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) {
+ m_pCodecMgr->GetJpegModule()->Finish(m_pJpegContext);
+ }
+ if (m_pPngContext) {
+ m_pCodecMgr->GetPngModule()->Finish(m_pPngContext);
+ }
+ if (m_pGifContext) {
+ m_pCodecMgr->GetGifModule()->Finish(m_pGifContext);
+ }
+ if (m_pBmpContext) {
+ m_pCodecMgr->GetBmpModule()->Finish(m_pBmpContext);
+ }
+ if (m_pTiffContext) {
+ m_pCodecMgr->GetTiffModule()->DestroyDecoder(m_pTiffContext);
+ }
+ FX_Free(m_pSrcBuf);
+ FX_Free(m_pDecodeBuf);
+ 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(uint8_t, 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_memcpy(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,
+ uint8_t*& src_buf) {
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap;
+ if (!pDIBitmap) {
+ ASSERT(false);
+ 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();
+ int32_t row =
+ (int32_t)((line - pCodec->m_clipBox.top) * scale_y) + pCodec->m_startY;
+ uint8_t* src_scan = (uint8_t*)pDIBitmap->GetScanline(row);
+ uint8_t* des_scan = pCodec->m_pDecodeBuf;
+ src_buf = pCodec->m_pDecodeBuf;
+ int32_t src_Bpp = pDIBitmap->GetBPP() >> 3;
+ int32_t des_Bpp = (pCodec->m_SrcFormat & 0xff) >> 3;
+ int32_t src_left = pCodec->m_startX;
+ int32_t des_left = pCodec->m_clipBox.left;
+ src_scan += src_left * src_Bpp;
+ des_scan += des_left * des_Bpp;
+ for (int32_t 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()) {
+ return FALSE;
+ }
+ FX_DWORD des_g = 0;
+ des_g += pPixelWeights->m_Weights[0] * src_scan[src_col];
+ des_scan[pPixelWeights->m_SrcStart] = (uint8_t)(des_g >> 16);
+ } break;
+ case FXDIB_Rgb:
+ case FXDIB_Rgb32: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ const uint8_t* 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);
+ uint8_t* pDes = &des_scan[pPixelWeights->m_SrcStart * des_Bpp];
+ *pDes++ = (uint8_t)((des_b) >> 16);
+ *pDes++ = (uint8_t)((des_g) >> 16);
+ *pDes = (uint8_t)((des_r) >> 16);
+ } break;
+ case FXDIB_Argb: {
+ FX_DWORD des_r = 0, des_g = 0, des_b = 0;
+ const uint8_t* 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++);
+ uint8_t* pDes = &des_scan[pPixelWeights->m_SrcStart * des_Bpp];
+ *pDes++ = (uint8_t)((des_b) >> 16);
+ *pDes++ = (uint8_t)((des_g) >> 16);
+ *pDes++ = (uint8_t)((des_r) >> 16);
+ *pDes = *p;
+ } break;
+ default:
+ return FALSE;
+ }
+ }
+ }
+ return TRUE;
+}
+void CCodec_ProgressiveDecoder::PngOneOneMapResampleHorz(
+ CFX_DIBitmap* pDeviceBitmap,
+ int32_t des_line,
+ uint8_t* src_scan,
+ FXCodec_Format src_format) {
+ uint8_t* des_scan = (uint8_t*)pDeviceBitmap->GetScanline(des_line);
+ int32_t src_Bpp = (m_SrcFormat & 0xff) >> 3;
+ int32_t des_Bpp = pDeviceBitmap->GetBPP() >> 3;
+ int32_t src_left = m_clipBox.left;
+ int32_t des_left = m_startX;
+ src_scan += src_left * src_Bpp;
+ des_scan += des_left * des_Bpp;
+ for (int32_t 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()) {
+ 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++ = (uint8_t)(des_g >> 16);
+ } break;
+ case FXDIB_Rgb:
+ case FXDIB_Rgb32: {
+ FX_DWORD des_b = 0, des_g = 0, des_r = 0;
+ const uint8_t* 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++ = (uint8_t)((des_b) >> 16);
+ *des_scan++ = (uint8_t)((des_g) >> 16);
+ *des_scan++ = (uint8_t)((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;
+ const uint8_t* 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++ = (uint8_t)((des_b) >> 16);
+ *des_scan++ = (uint8_t)((des_g) >> 16);
+ *des_scan++ = (uint8_t)((des_r) >> 16);
+ *des_scan++ = (uint8_t)((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);
+ 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(uint8_t, 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_memcpy(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;
+}
+uint8_t* CCodec_ProgressiveDecoder::GifAskLocalPaletteBufCallback(
+ void* pModule,
+ int32_t frame_num,
+ int32_t pal_size) {
+ return FX_Alloc(uint8_t, pal_size);
+}
+FX_BOOL CCodec_ProgressiveDecoder::GifInputRecordPositionBufCallback(
+ void* pModule,
+ FX_DWORD rcd_pos,
+ const FX_RECT& img_rc,
+ int32_t pal_num,
+ void* pal_ptr,
+ int32_t delay_time,
+ FX_BOOL user_input,
+ int32_t trans_index,
+ int32_t 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;
+ }
+ uint8_t* pPalette = NULL;
+ if (pal_num != 0 && pal_ptr) {
+ pPalette = (uint8_t*)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++) {
+ 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;
+ int32_t 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++) {
+ uint8_t* pScanline =
+ (uint8_t*)pDevice->GetScanline(row + startY) + startX * Bpp;
+ switch (pCodec->m_TransMethod) {
+ case 3: {
+ uint8_t gray =
+ FXRGB2GRAY(FXARGB_R(argb), FXARGB_G(argb), FXARGB_B(argb));
+ FXSYS_memset(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,
+ int32_t row_num,
+ uint8_t* row_buf) {
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap;
+ ASSERT(pDIBitmap);
+ int32_t img_width = pCodec->m_GifFrameRect.Width();
+ if (!pDIBitmap->HasAlpha()) {
+ uint8_t* 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++;
+ }
+ }
+ int32_t pal_index = pCodec->m_GifBgIndex;
+ if (pCodec->m_GifTransIndex != -1 && pCodec->m_pDeviceBitmap->HasAlpha()) {
+ pal_index = pCodec->m_GifTransIndex;
+ }
+ FXSYS_memset(pCodec->m_pDecodeBuf, pal_index, pCodec->m_SrcWidth);
+ bool bLastPass = (row_num % 2) == 1;
+ int32_t line = row_num + pCodec->m_GifFrameRect.top;
+ int32_t left = pCodec->m_GifFrameRect.left;
+ FXSYS_memcpy(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) {
+ uint8_t* scan_src =
+ (uint8_t*)pDIBitmap->GetScanline(des_row) + des_ScanOffet;
+ int cur_row = des_row;
+ while (++cur_row < des_bottom) {
+ uint8_t* scan_des =
+ (uint8_t*)pDIBitmap->GetScanline(cur_row) + des_ScanOffet;
+ FX_DWORD size = pCodec->m_sizeX * des_Bpp;
+ FXSYS_memcpy(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++) {
+ uint8_t* scan_des =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet;
+ PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top);
+ const uint8_t* scan_src1 =
+ pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) +
+ des_ScanOffet;
+ const uint8_t* 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()) {
+ return;
+ }
+ int des_g = 0;
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (uint8_t)(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++ = (uint8_t)((des_b) >> 16);
+ *scan_des++ = (uint8_t)((des_g) >> 16);
+ *scan_des++ = (uint8_t)((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++ = (uint8_t)((des_b) >> 16);
+ *scan_des++ = (uint8_t)((des_g) >> 16);
+ *scan_des++ = (uint8_t)((des_r) >> 16);
+ *scan_des++ = (uint8_t)((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(uint8_t, 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_memcpy(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,
+ int32_t row_num,
+ uint8_t* row_buf) {
+ CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule;
+ CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap;
+ ASSERT(pDIBitmap);
+ FXSYS_memcpy(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) {
+ uint8_t* scan_src =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ while (++des_row < des_bottom) {
+ uint8_t* scan_des =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ FX_DWORD size = m_sizeX * des_Bpp;
+ FXSYS_memcpy(scan_des, scan_src, size);
+ }
+ return;
+ }
+ for (; des_row_1 > des_row; des_row_1--) {
+ uint8_t* scan_des =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet;
+ PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top);
+ const uint8_t* scan_src1 =
+ pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) +
+ des_ScanOffet;
+ const uint8_t* 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()) {
+ return;
+ }
+ int des_g = 0;
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (uint8_t)(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++ = (uint8_t)((des_b) >> 16);
+ *scan_des++ = (uint8_t)((des_g) >> 16);
+ *scan_des++ = (uint8_t)((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++ = (uint8_t)((des_b) >> 16);
+ *scan_des++ = (uint8_t)((des_g) >> 16);
+ *scan_des++ = (uint8_t)((des_r) >> 16);
+ *scan_des++ = (uint8_t)((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;
+ }
+ FX_Free(m_pSrcBuf);
+ m_pSrcBuf = FX_Alloc(uint8_t, size);
+ FXSYS_memset(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;
+ int32_t 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);
+ FX_Free(m_pSrcPalette);
+ if (m_SrcPaletteNumber) {
+ m_pSrcPalette = FX_Alloc(FX_ARGB, m_SrcPaletteNumber);
+ FXSYS_memcpy(m_pSrcPalette, pPalette,
+ m_SrcPaletteNumber * sizeof(FX_DWORD));
+ } else {
+ m_pSrcPalette = nullptr;
+ }
+ return TRUE;
+ }
+ if (m_pBmpContext) {
+ 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);
+ int32_t 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) {
+ 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) {
+ pPngModule->Finish(m_pPngContext);
+ }
+ m_pPngContext = NULL;
+ m_status = FXCODEC_STATUS_ERR_FORMAT;
+ return FALSE;
+ }
+ if (m_pSrcBuf && input_size > m_SrcSize) {
+ FX_Free(m_pSrcBuf);
+ m_pSrcBuf = FX_Alloc(uint8_t, input_size);
+ FXSYS_memset(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) {
+ 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;
+ int32_t readResult = pGifModule->ReadHeader(
+ m_pGifContext, &m_SrcWidth, &m_SrcHeight, &m_GifPltNumber,
+ (void**)&m_pGifPalette, &m_GifBgIndex, nullptr);
+ 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, nullptr);
+ }
+ if (readResult == 1) {
+ m_SrcBPC = 8;
+ m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight);
+ return TRUE;
+ }
+ if (m_pGifContext) {
+ 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;
+ }
+ int32_t 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:
+ break;
+ }
+ 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(uint8_t* buffer, int width = 1) {
+ if (buffer && width > 0) {
+ uint8_t 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,
+ uint8_t* src_scan,
+ FXCodec_Format src_format) {
+ int src_left = m_clipBox.left;
+ int des_left = m_startX;
+ uint8_t* 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++ = (uint8_t)(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 * (uint8_t)(argb >> 16);
+ des_g += pixel_weight * (uint8_t)(argb >> 8);
+ des_b += pixel_weight * (uint8_t)argb;
+ }
+ *des_scan++ =
+ (uint8_t)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];
+ const uint8_t* 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++ =
+ (uint8_t)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];
+ const uint8_t* src_pixel = src_scan + j * src_Bpp;
+ uint8_t 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++ =
+ (uint8_t)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_memset(des_scan, (uint8_t)(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 * (uint8_t)(argb >> 16);
+ des_g += pixel_weight * (uint8_t)(argb >> 8);
+ des_b += pixel_weight * (uint8_t)argb;
+ }
+ *des_scan++ = (uint8_t)((des_b) >> 16);
+ *des_scan++ = (uint8_t)((des_g) >> 16);
+ *des_scan++ = (uint8_t)((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 * (uint8_t)(argb >> 16);
+ des_g += pixel_weight * (uint8_t)(argb >> 8);
+ des_b += pixel_weight * (uint8_t)argb;
+ }
+ *des_scan++ = (uint8_t)((des_b) >> 16);
+ *des_scan++ = (uint8_t)((des_g) >> 16);
+ *des_scan++ = (uint8_t)((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 * (uint8_t)(argb >> 24);
+ des_r += pixel_weight * (uint8_t)(argb >> 16);
+ des_g += pixel_weight * (uint8_t)(argb >> 8);
+ des_b += pixel_weight * (uint8_t)argb;
+ }
+ *des_scan++ = (uint8_t)((des_b) >> 16);
+ *des_scan++ = (uint8_t)((des_g) >> 16);
+ *des_scan++ = (uint8_t)((des_r) >> 16);
+ *des_scan++ = (uint8_t)((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];
+ const uint8_t* 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++ = (uint8_t)((des_b) >> 16);
+ *des_scan++ = (uint8_t)((des_g) >> 16);
+ *des_scan++ = (uint8_t)((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];
+ const uint8_t* src_pixel = src_scan + j * src_Bpp;
+ uint8_t 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++ = (uint8_t)((des_b) >> 16);
+ *des_scan++ = (uint8_t)((des_g) >> 16);
+ *des_scan++ = (uint8_t)((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];
+ const uint8_t* 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++ = (uint8_t)((des_b) >> 16);
+ *des_scan++ = (uint8_t)((des_g) >> 16);
+ *des_scan++ = (uint8_t)((des_r) >> 16);
+ *des_scan++ = (uint8_t)((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) {
+ uint8_t* scan_src =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ while (++des_row < des_bottom) {
+ uint8_t* scan_des =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ FX_DWORD size = m_sizeX * des_Bpp;
+ FXSYS_memcpy(scan_des, scan_src, size);
+ }
+ }
+ return;
+ }
+ for (; des_row_1 < des_row; des_row_1++) {
+ uint8_t* scan_des =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet;
+ PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top);
+ const uint8_t* scan_src1 =
+ pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) +
+ des_ScanOffet;
+ const uint8_t* 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()) {
+ return;
+ }
+ int des_g = 0;
+ des_g += pWeight->m_Weights[0] * (*scan_src1++);
+ des_g += pWeight->m_Weights[1] * (*scan_src2++);
+ *scan_des++ = (uint8_t)(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++ = (uint8_t)((des_b) >> 16);
+ *scan_des++ = (uint8_t)((des_g) >> 16);
+ *scan_des++ = (uint8_t)((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++ = (uint8_t)((des_b) >> 16);
+ *scan_des++ = (uint8_t)((des_g) >> 16);
+ *scan_des++ = (uint8_t)((des_r) >> 16);
+ *scan_des++ = (uint8_t)((des_a) >> 16);
+ } break;
+ default:
+ return;
+ }
+ }
+ }
+ int des_bottom = des_top + m_sizeY;
+ if (des_row + (int)scale_y >= des_bottom - 1) {
+ uint8_t* scan_src =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ while (++des_row < des_bottom) {
+ uint8_t* scan_des =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ FX_DWORD size = m_sizeX * des_Bpp;
+ FXSYS_memcpy(scan_des, scan_src, size);
+ }
+ }
+ return;
+ }
+ int multiple = (int)FXSYS_ceil((FX_FLOAT)scale_y - 1);
+ if (multiple > 0) {
+ uint8_t* scan_src =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet;
+ for (int i = 1; i <= multiple; i++) {
+ if (des_row + i >= m_startY + m_sizeY) {
+ return;
+ }
+ uint8_t* scan_des =
+ (uint8_t*)pDeviceBitmap->GetScanline(des_row + i) + des_ScanOffet;
+ FX_DWORD size = m_sizeX * des_Bpp;
+ FXSYS_memcpy(scan_des, scan_src, size);
+ }
+ }
+}
+void CCodec_ProgressiveDecoder::Resample(CFX_DIBitmap* pDeviceBitmap,
+ int32_t src_line,
+ uint8_t* 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(int32_t& 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) {
+ int32_t 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) {
+ pGifModule->Finish(m_pGifContext);
+ m_pGifContext = NULL;
+ }
+ return m_status = FXCODEC_STATUS_ERROR;
+ }
+ } break;
+ default:
+ break;
+ }
+ return FXCODEC_STATUS_ERROR;
+}
+FXCODEC_STATUS CCodec_ProgressiveDecoder::StartDecode(CFX_DIBitmap* pDIBitmap,
+ int start_x,
+ int start_y,
+ int size_x,
+ int size_y,
+ int32_t 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);
+ int32_t out_range_x = device_rc.right - pDIBitmap->GetWidth();
+ int32_t 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 -= (int32_t)FXSYS_ceil((FX_FLOAT)start_x * scaleX);
+ }
+ if (out_range_x > 0) {
+ m_clipBox.right -= (int32_t)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 -= (int32_t)FXSYS_ceil((FX_FLOAT)start_y * scaleY);
+ }
+ if (out_range_y > 0) {
+ m_clipBox.bottom -= (int32_t)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;
+ FX_Free(m_pDecodeBuf);
+ m_pDecodeBuf = FX_Alloc(uint8_t, scanline_size);
+ FXSYS_memset(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) {
+ 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;
+ FX_Free(m_pDecodeBuf);
+ m_pDecodeBuf = FX_Alloc(uint8_t, scanline_size);
+ FXSYS_memset(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;
+ FX_Free(m_pDecodeBuf);
+ m_pDecodeBuf = FX_Alloc(uint8_t, scanline_size);
+ FXSYS_memset(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;
+ FX_Free(m_pDecodeBuf);
+ m_pDecodeBuf = FX_Alloc(uint8_t, m_ScanlineSize);
+ FXSYS_memset(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) {
+ pPngModule->Finish(m_pPngContext);
+ }
+ m_pPngContext = NULL;
+ m_pDeviceBitmap = NULL;
+ m_pFile = NULL;
+ return m_status = FXCODEC_STATUS_DECODE_FINISH;
+ }
+ if (m_pSrcBuf && input_size > m_SrcSize) {
+ FX_Free(m_pSrcBuf);
+ m_pSrcBuf = FX_Alloc(uint8_t, input_size);
+ FXSYS_memset(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, nullptr);
+ 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) {
+ int32_t readRes =
+ pGifModule->LoadFrame(m_pGifContext, m_FrameCur, nullptr);
+ 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, nullptr);
+ }
+ 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) {
+ int32_t 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 = new CFX_DIBitmap;
+ 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 = new CFX_DIBitmap;
+ pFormatBitmap->Create(pClipBitmap->GetWidth(),
+ pClipBitmap->GetHeight(), FXDIB_8bppRgb);
+ break;
+ case FXDIB_8bppMask:
+ pFormatBitmap = new CFX_DIBitmap;
+ pFormatBitmap->Create(pClipBitmap->GetWidth(),
+ pClipBitmap->GetHeight(), FXDIB_8bppMask);
+ break;
+ case FXDIB_Rgb:
+ pFormatBitmap = new CFX_DIBitmap;
+ pFormatBitmap->Create(pClipBitmap->GetWidth(),
+ pClipBitmap->GetHeight(), FXDIB_Rgb);
+ break;
+ case FXDIB_Rgb32:
+ pFormatBitmap = new CFX_DIBitmap;
+ pFormatBitmap->Create(pClipBitmap->GetWidth(),
+ pClipBitmap->GetHeight(), FXDIB_Rgb32);
+ break;
+ case FXDIB_Argb:
+ pFormatBitmap = pClipBitmap;
+ break;
+ default:
+ break;
+ }
+ switch (m_pDeviceBitmap->GetFormat()) {
+ case FXDIB_8bppRgb:
+ case FXDIB_8bppMask: {
+ for (int32_t row = 0; row < pClipBitmap->GetHeight(); row++) {
+ uint8_t* src_line = (uint8_t*)pClipBitmap->GetScanline(row);
+ uint8_t* des_line = (uint8_t*)pFormatBitmap->GetScanline(row);
+ for (int32_t col = 0; col < pClipBitmap->GetWidth(); col++) {
+ uint8_t _a = 255 - src_line[3];
+ uint8_t b = (src_line[0] * src_line[3] + 0xFF * _a) / 255;
+ uint8_t g = (src_line[1] * src_line[3] + 0xFF * _a) / 255;
+ uint8_t 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: {
+ int32_t desBpp =
+ (m_pDeviceBitmap->GetFormat() == FXDIB_Rgb) ? 3 : 4;
+ for (int32_t row = 0; row < pClipBitmap->GetHeight(); row++) {
+ uint8_t* src_line = (uint8_t*)pClipBitmap->GetScanline(row);
+ uint8_t* des_line = (uint8_t*)pFormatBitmap->GetScanline(row);
+ for (int32_t col = 0; col < pClipBitmap->GetWidth(); col++) {
+ uint8_t _a = 255 - src_line[3];
+ uint8_t b = (src_line[0] * src_line[3] + 0xFF * _a) / 255;
+ uint8_t g = (src_line[1] * src_line[3] + 0xFF * _a) / 255;
+ uint8_t 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:
+ break;
+ }
+ 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 new CCodec_ProgressiveDecoder(this);
+}
diff --git a/core/fxcodec/codec/fx_codec_progress.h b/core/fxcodec/codec/fx_codec_progress.h
new file mode 100644
index 0000000..c9ee389
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_progress.h
@@ -0,0 +1,221 @@
+// 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 CORE_FXCODEC_CODEC_FX_CODEC_PROGRESS_H_
+#define CORE_FXCODEC_CODEC_FX_CODEC_PROGRESS_H_
+
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxcrt/fx_memory.h"
+#include "core/include/fxcrt/fx_system.h"
+#include "core/include/fxge/fx_dib.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:
+ CFXCODEC_WeightTable() { m_pWeightTables = NULL; }
+ ~CFXCODEC_WeightTable() { 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;
+ uint8_t* m_pWeightTables;
+};
+class CFXCODEC_HorzTable {
+ public:
+ CFXCODEC_HorzTable() { m_pWeightTables = NULL; }
+ ~CFXCODEC_HorzTable() { 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;
+ uint8_t* m_pWeightTables;
+};
+class CFXCODEC_VertTable {
+ public:
+ CFXCODEC_VertTable() { m_pWeightTables = NULL; }
+ ~CFXCODEC_VertTable() { 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;
+ uint8_t* 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);
+ ~CCodec_ProgressiveDecoder() override;
+
+ FXCODEC_STATUS LoadImageInfo(IFX_FileRead* pFile,
+ FXCODEC_IMAGE_TYPE imageType,
+ CFX_DIBAttribute* pAttribute) override;
+
+ FXCODEC_IMAGE_TYPE GetType() const override { return m_imagType; }
+ int32_t GetWidth() const override { return m_SrcWidth; }
+ int32_t GetHeight() const override { return m_SrcHeight; }
+ int32_t GetNumComponents() const override { return m_SrcComponents; }
+ int32_t GetBPC() const override { return m_SrcBPC; }
+ void SetClipBox(FX_RECT* clip) override;
+
+ FXCODEC_STATUS GetFrames(int32_t& frames, IFX_Pause* pPause) override;
+ FXCODEC_STATUS StartDecode(CFX_DIBitmap* pDIBitmap,
+ int start_x,
+ int start_y,
+ int size_x,
+ int size_y,
+ int32_t frames,
+ FX_BOOL bInterpol) override;
+
+ FXCODEC_STATUS ContinueDecode(IFX_Pause* pPause) override;
+
+ protected:
+ 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,
+ uint8_t*& src_buf);
+ static void PngFillScanlineBufCompletedFunc(void* pModule,
+ int pass,
+ int line);
+ static void GifRecordCurrentPositionCallback(void* pModule,
+ FX_DWORD& cur_pos);
+ static uint8_t* GifAskLocalPaletteBufCallback(void* pModule,
+ int32_t frame_num,
+ int32_t pal_size);
+ static FX_BOOL GifInputRecordPositionBufCallback(void* pModule,
+ FX_DWORD rcd_pos,
+ const FX_RECT& img_rc,
+ int32_t pal_num,
+ void* pal_ptr,
+ int32_t delay_time,
+ FX_BOOL user_input,
+ int32_t trans_index,
+ int32_t disposal_method,
+ FX_BOOL interlace);
+ static void GifReadScanlineCallback(void* pModule,
+ int32_t row_num,
+ uint8_t* row_buf);
+ static FX_BOOL BmpInputImagePositionBufCallback(void* pModule,
+ FX_DWORD rcd_pos);
+ static void BmpReadScanlineCallback(void* pModule,
+ int32_t row_num,
+ uint8_t* row_buf);
+
+ FX_BOOL DetectImageType(FXCODEC_IMAGE_TYPE imageType,
+ CFX_DIBAttribute* pAttribute);
+ void GetDownScale(int& down_scale);
+ void GetTransMethod(FXDIB_Format des_format, FXCodec_Format src_format);
+ void ReSampleScanline(CFX_DIBitmap* pDeviceBitmap,
+ int32_t des_line,
+ uint8_t* src_scan,
+ FXCodec_Format src_format);
+ void Resample(CFX_DIBitmap* pDeviceBitmap,
+ int32_t src_line,
+ uint8_t* 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);
+ void PngOneOneMapResampleHorz(CFX_DIBitmap* pDeviceBitmap,
+ int32_t des_line,
+ uint8_t* src_scan,
+ FXCodec_Format src_format);
+ FX_BOOL GifReadMoreData(ICodec_GifModule* pGifModule,
+ FXCODEC_STATUS& err_status);
+ void GifDoubleLineResampleVert(CFX_DIBitmap* pDeviceBitmap,
+ double scale_y,
+ int des_row);
+ FX_BOOL BmpReadMoreData(ICodec_BmpModule* pBmpModule,
+ FXCODEC_STATUS& err_status);
+ void ResampleVertBT(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row);
+
+ public:
+ IFX_FileRead* m_pFile;
+ CCodec_ModuleMgr* m_pCodecMgr;
+ void* m_pJpegContext;
+ void* m_pPngContext;
+ void* m_pGifContext;
+ void* m_pBmpContext;
+ void* m_pTiffContext;
+ FXCODEC_IMAGE_TYPE m_imagType;
+ FX_DWORD m_offSet;
+ uint8_t* m_pSrcBuf;
+ FX_DWORD m_SrcSize;
+ uint8_t* 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;
+ uint8_t* m_pGifPalette;
+ int32_t m_GifPltNumber;
+ int m_GifTransIndex;
+ FX_RECT m_GifFrameRect;
+ FX_BOOL m_BmpIsTopBottom;
+ FXCODEC_STATUS m_status;
+};
+
+#endif // CORE_FXCODEC_CODEC_FX_CODEC_PROGRESS_H_
diff --git a/core/fxcodec/codec/fx_codec_tiff.cpp b/core/fxcodec/codec/fx_codec_tiff.cpp
new file mode 100644
index 0000000..2af92f2
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_tiff.cpp
@@ -0,0 +1,544 @@
+// 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 "core/fxcodec/codec/codec_int.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxge/fx_dib.h"
+
+extern "C" {
+#include "third_party/libtiff/tiffiop.h"
+}
+
+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);
+class CCodec_TiffContext {
+ public:
+ CCodec_TiffContext();
+ ~CCodec_TiffContext();
+
+ FX_BOOL InitDecoder(IFX_FileRead* file_ptr);
+ void GetFrames(int32_t& frames);
+ FX_BOOL LoadFrameInfo(int32_t 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;
+ int32_t frame_num;
+ int32_t frame_cur;
+ FX_BOOL isDecoder;
+
+ private:
+ FX_BOOL isSupport(CFX_DIBitmap* pDIBitmap);
+ void SetPalette(CFX_DIBitmap* pDIBitmap, uint16_t bps);
+ FX_BOOL Decode1bppRGB(CFX_DIBitmap* pDIBitmap,
+ int32_t height,
+ int32_t width,
+ uint16_t bps,
+ uint16_t spp);
+ FX_BOOL Decode8bppRGB(CFX_DIBitmap* pDIBitmap,
+ int32_t height,
+ int32_t width,
+ uint16_t bps,
+ uint16_t spp);
+ FX_BOOL Decode24bppRGB(CFX_DIBitmap* pDIBitmap,
+ int32_t height,
+ int32_t width,
+ uint16_t bps,
+ uint16_t 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 (icc_ctx) {
+ IccLib_DestroyTransform(icc_ctx);
+ icc_ctx = NULL;
+ }
+ 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)(intptr_t)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_memset(ptr, val, (size_t)size);
+}
+void _TIFFmemcpy(void* des, const void* src, tmsize_t size) {
+ FXSYS_memcpy(des, src, (size_t)size);
+}
+int _TIFFmemcmp(const void* ptr1, const void* ptr2, tmsize_t size) {
+ return FXSYS_memcmp(ptr1, ptr2, (size_t)size);
+}
+
+TIFFErrorHandler _TIFFwarningHandler = nullptr;
+TIFFErrorHandler _TIFFerrorHandler = nullptr;
+
+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 (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 {
+ AdobeCMYK_to_sRGB1(c, m, y, k, *r, *g, *b);
+ }
+ 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(int32_t& 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(uint8_t, 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; \
+ uint8_t* buf = NULL; \
+ TIFFGetField(tif_ctx, tag, &size, &buf); \
+ if (size && buf) { \
+ (key) = FX_Alloc(uint8_t, size); \
+ if ((key)) { \
+ FXSYS_memcpy((key), buf, size); \
+ pExif->m_TagVal.SetAt(tag, (key)); \
+ } \
+ } \
+ } \
+ (key) = NULL;
+
+namespace {
+
+template <class T>
+FX_BOOL Tiff_Exif_GetInfo(TIFF* tif_ctx, ttag_t tag, CFX_DIBAttribute* pAttr) {
+ T val = 0;
+ TIFFGetField(tif_ctx, tag, &val);
+ if (!val)
+ return FALSE;
+ T* ptr = FX_Alloc(T, 1);
+ *ptr = val;
+ pAttr->m_Exif[tag] = (void*)ptr;
+ return TRUE;
+}
+void Tiff_Exif_GetStringInfo(TIFF* tif_ctx,
+ ttag_t tag,
+ CFX_DIBAttribute* pAttr) {
+ FX_CHAR* buf = nullptr;
+ TIFFGetField(tif_ctx, tag, &buf);
+ if (!buf)
+ return;
+ FX_STRSIZE size = FXSYS_strlen(buf);
+ uint8_t* ptr = FX_Alloc(uint8_t, size + 1);
+ FXSYS_memcpy(ptr, buf, size);
+ ptr[size] = 0;
+ pAttr->m_Exif[tag] = ptr;
+}
+
+} // namespace
+
+FX_BOOL CCodec_TiffContext::LoadFrameInfo(int32_t 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;
+ uint8_t* 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;
+ }
+ Tiff_Exif_GetInfo<FX_WORD>(tif_ctx, TIFFTAG_ORIENTATION, pAttribute);
+ if (Tiff_Exif_GetInfo<FX_FLOAT>(tif_ctx, TIFFTAG_XRESOLUTION, pAttribute)) {
+ void* val = pAttribute->m_Exif[TIFFTAG_XRESOLUTION];
+ FX_FLOAT fDpi = val ? *reinterpret_cast<FX_FLOAT*>(val) : 0;
+ pAttribute->m_nXDPI = (int32_t)(fDpi + 0.5f);
+ }
+ if (Tiff_Exif_GetInfo<FX_FLOAT>(tif_ctx, TIFFTAG_YRESOLUTION, pAttribute)) {
+ void* val = pAttribute->m_Exif[TIFFTAG_YRESOLUTION];
+ FX_FLOAT fDpi = val ? *reinterpret_cast<FX_FLOAT*>(val) : 0;
+ pAttribute->m_nYDPI = (int32_t)(fDpi + 0.5f);
+ }
+ Tiff_Exif_GetStringInfo(tif_ctx, TIFFTAG_IMAGEDESCRIPTION, pAttribute);
+ Tiff_Exif_GetStringInfo(tif_ctx, TIFFTAG_MAKE, pAttribute);
+ Tiff_Exif_GetStringInfo(tif_ctx, TIFFTAG_MODEL, pAttribute);
+ }
+ bpc = tif_bpc;
+ if (tif_rps > height) {
+ TIFFSetField(tif_ctx, TIFFTAG_ROWSPERSTRIP, tif_rps = height);
+ }
+ return TRUE;
+}
+void _TiffBGRA2RGBA(uint8_t* pBuf, int32_t pixel, int32_t spp) {
+ for (int32_t n = 0; n < pixel; n++) {
+ uint8_t 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;
+ }
+ uint16_t 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;
+ }
+ uint16_t 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, uint16_t bps) {
+ uint16_t *red_orig, *green_orig, *blue_orig;
+ TIFFGetField(tif_ctx, TIFFTAG_COLORMAP, &red_orig, &green_orig, &blue_orig);
+ for (int32_t i = (1L << bps) - 1; i >= 0; i--) {
+#define CVT(x) ((uint16_t)((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
+ }
+ int32_t len = 1 << bps;
+ for (int32_t 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 = (uint32_t)b | ((uint32_t)g << 8) | ((uint32_t)r << 16) |
+ (((uint32)0xffL) << 24);
+ pDIBitmap->SetPaletteEntry(index, color);
+ }
+}
+FX_BOOL CCodec_TiffContext::Decode1bppRGB(CFX_DIBitmap* pDIBitmap,
+ int32_t height,
+ int32_t width,
+ uint16_t bps,
+ uint16_t spp) {
+ if (pDIBitmap->GetBPP() != 1 || spp != 1 || bps != 1 ||
+ !isSupport(pDIBitmap)) {
+ return FALSE;
+ }
+ SetPalette(pDIBitmap, bps);
+ int32_t size = (int32_t)TIFFScanlineSize(tif_ctx);
+ uint8_t* buf = (uint8_t*)_TIFFmalloc(size);
+ if (buf == NULL) {
+ TIFFError(TIFFFileName(tif_ctx), "No space for scanline buffer");
+ return FALSE;
+ }
+ uint8_t* bitMapbuffer = (uint8_t*)pDIBitmap->GetBuffer();
+ FX_DWORD pitch = pDIBitmap->GetPitch();
+ for (int32_t row = 0; row < height; row++) {
+ TIFFReadScanline(tif_ctx, buf, row, 0);
+ for (int32_t j = 0; j < size; j++) {
+ bitMapbuffer[row * pitch + j] = buf[j];
+ }
+ }
+ _TIFFfree(buf);
+ return TRUE;
+}
+FX_BOOL CCodec_TiffContext::Decode8bppRGB(CFX_DIBitmap* pDIBitmap,
+ int32_t height,
+ int32_t width,
+ uint16_t bps,
+ uint16_t spp) {
+ if (pDIBitmap->GetBPP() != 8 || spp != 1 || (bps != 4 && bps != 8) ||
+ !isSupport(pDIBitmap)) {
+ return FALSE;
+ }
+ SetPalette(pDIBitmap, bps);
+ int32_t size = (int32_t)TIFFScanlineSize(tif_ctx);
+ uint8_t* buf = (uint8_t*)_TIFFmalloc(size);
+ if (buf == NULL) {
+ TIFFError(TIFFFileName(tif_ctx), "No space for scanline buffer");
+ return FALSE;
+ }
+ uint8_t* bitMapbuffer = (uint8_t*)pDIBitmap->GetBuffer();
+ FX_DWORD pitch = pDIBitmap->GetPitch();
+ for (int32_t row = 0; row < height; row++) {
+ TIFFReadScanline(tif_ctx, buf, row, 0);
+ for (int32_t 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,
+ int32_t height,
+ int32_t width,
+ uint16_t bps,
+ uint16_t spp) {
+ if (pDIBitmap->GetBPP() != 24 || !isSupport(pDIBitmap)) {
+ return FALSE;
+ }
+ int32_t size = (int32_t)TIFFScanlineSize(tif_ctx);
+ uint8_t* buf = (uint8_t*)_TIFFmalloc(size);
+ if (buf == NULL) {
+ TIFFError(TIFFFileName(tif_ctx), "No space for scanline buffer");
+ return FALSE;
+ }
+ uint8_t* bitMapbuffer = (uint8_t*)pDIBitmap->GetBuffer();
+ FX_DWORD pitch = pDIBitmap->GetPitch();
+ for (int32_t row = 0; row < height; row++) {
+ TIFFReadScanline(tif_ctx, buf, row, 0);
+ for (int32_t 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++) {
+ uint8_t* row_buf = (uint8_t*)pDIBitmap->GetScanline(row);
+ _TiffBGRA2RGBA(row_buf, img_wid, 4);
+ }
+ return TRUE;
+ }
+ }
+ uint16_t 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;
+}
+void* CCodec_TiffModule::CreateDecoder(IFX_FileRead* file_ptr) {
+ CCodec_TiffContext* pDecoder = new CCodec_TiffContext;
+ if (!pDecoder->InitDecoder(file_ptr)) {
+ delete pDecoder;
+ return NULL;
+ }
+ return pDecoder;
+}
+void CCodec_TiffModule::GetFrames(void* ctx, int32_t& frames) {
+ CCodec_TiffContext* pDecoder = (CCodec_TiffContext*)ctx;
+ pDecoder->GetFrames(frames);
+}
+FX_BOOL CCodec_TiffModule::LoadFrameInfo(void* ctx,
+ int32_t 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;
+}
