// 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 _JBIG2_CONTEXT_H_ | |
#define _JBIG2_CONTEXT_H_ | |
#include "JBig2_Module.h" | |
#include "JBig2_List.h" | |
#include "JBig2_Segment.h" | |
#include "JBig2_Page.h" | |
#include "JBig2_GeneralDecoder.h" | |
#include "../../../include/fxcodec/fx_codec_def.h" | |
#include "../../../include/fxcrt/fx_basic.h" | |
typedef enum { | |
JBIG2_OUT_OF_PAGE = 0, | |
JBIG2_IN_PAGE, | |
} JBig2State; | |
#define JBIG2_SUCCESS 0 | |
#define JBIG2_FAILED -1 | |
#define JBIG2_ERROR_TOO_SHORT -2 | |
#define JBIG2_ERROR_FETAL -3 | |
#define JBIG2_END_OF_PAGE 2 | |
#define JBIG2_END_OF_FILE 3 | |
#define JBIG2_ERROR_FILE_FORMAT -4 | |
#define JBIG2_ERROR_STREAM_TYPE -5 | |
#define JBIG2_ERROR_LIMIT -6 | |
#define JBIG2_FILE_STREAM 0 | |
#define JBIG2_SQUENTIAL_STREAM 1 | |
#define JBIG2_RANDOM_STREAM 2 | |
#define JBIG2_EMBED_STREAM 3 | |
#define JBIG2_MIN_SEGMENT_SIZE 11 | |
class CJBig2_Context : public CJBig2_Object | |
{ | |
public: | |
static CJBig2_Context *CreateContext(CJBig2_Module *pModule, FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength, | |
FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, IFX_Pause* pPause = NULL); | |
static void DestroyContext(CJBig2_Context *pContext); | |
FX_INT32 getFirstPage(FX_BYTE *pBuf, FX_INT32 width, FX_INT32 height, FX_INT32 stride, IFX_Pause* pPause); | |
FX_INT32 getNextPage(FX_BYTE *pBuf, FX_INT32 width, FX_INT32 height, FX_INT32 stride, IFX_Pause* pPause); | |
FX_INT32 getFirstPage(CJBig2_Image **image, IFX_Pause* pPause); | |
FX_INT32 getNextPage(CJBig2_Image **image, IFX_Pause* pPause); | |
FX_INT32 Continue(IFX_Pause* pPause); | |
FXCODEC_STATUS GetProcessiveStatus() | |
{ | |
return m_ProcessiveStatus; | |
}; | |
private: | |
CJBig2_Context(FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength, | |
FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, IFX_Pause* pPause); | |
~CJBig2_Context(); | |
FX_INT32 decodeFile(IFX_Pause* pPause); | |
FX_INT32 decode_SquentialOrgnazation(IFX_Pause* pPause); | |
FX_INT32 decode_EmbedOrgnazation(IFX_Pause* pPause); | |
FX_INT32 decode_RandomOrgnazation_FirstPage(IFX_Pause* pPause); | |
FX_INT32 decode_RandomOrgnazation(IFX_Pause* pPause); | |
CJBig2_Segment *findSegmentByNumber(FX_DWORD dwNumber); | |
CJBig2_Segment *findReferredSegmentByTypeAndIndex(CJBig2_Segment *pSegment, FX_BYTE cType, FX_INT32 nIndex); | |
FX_INT32 parseSegmentHeader(CJBig2_Segment *pSegment); | |
FX_INT32 parseSegmentData(CJBig2_Segment *pSegment, IFX_Pause* pPause); | |
FX_INT32 ProcessiveParseSegmentData(CJBig2_Segment *pSegment, IFX_Pause* pPause); | |
FX_INT32 parseSymbolDict(CJBig2_Segment *pSegment, IFX_Pause* pPause); | |
FX_INT32 parseTextRegion(CJBig2_Segment *pSegment); | |
FX_INT32 parsePatternDict(CJBig2_Segment *pSegment, IFX_Pause* pPause); | |
FX_INT32 parseHalftoneRegion(CJBig2_Segment *pSegment, IFX_Pause* pPause); | |
FX_INT32 parseGenericRegion(CJBig2_Segment *pSegment, IFX_Pause* pPause); | |
FX_INT32 parseGenericRefinementRegion(CJBig2_Segment *pSegment); | |
FX_INT32 parseTable(CJBig2_Segment *pSegment); | |
FX_INT32 parseRegionInfo(JBig2RegionInfo *pRI); | |
JBig2HuffmanCode *decodeSymbolIDHuffmanTable(CJBig2_BitStream *pStream, FX_DWORD SBNUMSYMS); | |
void huffman_assign_code(int* CODES, int* PREFLEN, int NTEMP); | |
void huffman_assign_code(JBig2HuffmanCode *SBSYMCODES, int NTEMP); | |
private: | |
CJBig2_Context *m_pGlobalContext; | |
FX_INT32 m_nStreamType; | |
CJBig2_BitStream *m_pStream; | |
FX_INT32 m_nState; | |
CJBig2_List<CJBig2_Segment> *m_pSegmentList; | |
CJBig2_List<JBig2PageInfo> *m_pPageInfoList; | |
CJBig2_Image *m_pPage; | |
FX_BOOL m_bBufSpecified; | |
FX_INT32 m_nSegmentDecoded; | |
IFX_Pause* m_pPause; | |
FX_INT32 m_PauseStep; | |
FXCODEC_STATUS m_ProcessiveStatus; | |
FX_BOOL m_bFirstPage; | |
CJBig2_ArithDecoder *m_pArithDecoder; | |
CJBig2_GRDProc *m_pGRD; | |
JBig2ArithCtx *m_gbContext; | |
CJBig2_Segment *m_pSegment; | |
FX_DWORD m_dwOffset; | |
JBig2RegionInfo m_ri; | |
}; | |
#endif |