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git-svn-id: svn://fileserver/activex/AVS/Sources/TeamlabOffice/trunk/ServerComponents@62550 954022d7-b5bf-4e40-9824-e11837661b57
107 lines
4.6 KiB
C++
107 lines
4.6 KiB
C++
#ifndef _PDF_READER_JBIG2STREAM_H
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#define _PDF_READER_JBIG2STREAM_H
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#include "Object.h"
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#include "Stream.h"
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namespace PdfReader
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{
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class CList;
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class JBIG2Segment;
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class JBIG2Bitmap;
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class JArithmeticDecoder;
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class JArithmeticDecoderStats;
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class JBIG2HuffmanDecoder;
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struct JBIG2HuffmanTable;
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class JBIG2MMRDecoder;
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//------------------------------------------------------------------------
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class JBIG2Stream : public FilterStream
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{
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public:
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JBIG2Stream(Stream *pStream, Object *pGlobalsStream);
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virtual ~JBIG2Stream();
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virtual StreamType GetType()
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{
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return strJBIG2;
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}
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virtual void Reset();
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virtual void Close();
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virtual int GetChar();
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virtual int LookChar();
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virtual StringExt *GetPSFilter(int nPSLevel, char *sIndent);
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virtual bool IsBinary(bool bLast = true);
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private:
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void ReadSegments();
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bool ReadSymbolDictSegment(unsigned int unSegNum, unsigned int unLength, unsigned int *punRefSegs, unsigned int unRefSegsCount);
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void ReadTextRegionSegment(unsigned int unSegNum, bool bImm, bool bLossless, unsigned int unLength, unsigned int *punRefSegs, unsigned int unRefSegsCount);
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JBIG2Bitmap *ReadTextRegion(bool bHuff, bool bRefine, int nW, int nH, unsigned int nNumInstances, unsigned int unLogStrips, int nNumSyms, JBIG2HuffmanTable *pSymCodeTab, unsigned int unSymCodeLen, JBIG2Bitmap **ppSyms, unsigned int unDefPixel, unsigned int unCombOp, unsigned int unTransposed, unsigned int unRefCorner, int nSOffset, JBIG2HuffmanTable *pHuffFSTable, JBIG2HuffmanTable *pHuffDSTable, JBIG2HuffmanTable *pHuffDTTable, JBIG2HuffmanTable *pHuffRDWTable, JBIG2HuffmanTable *pHuffRDHTable, JBIG2HuffmanTable *pHuffRDXTable, JBIG2HuffmanTable *pHuffRDYTable, JBIG2HuffmanTable *pHuffRSizeTable, unsigned int unTempl, int *pnATx, int *pnATy);
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void ReadPatternDictSegment(unsigned int unSegNum, unsigned int unLength);
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void ReadHalftoneRegionSegment(unsigned int unSegNum, bool bImm, bool bLossless, unsigned int unLength, unsigned int *punRefSegs, unsigned int unRefSegsCount);
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void ReadGenericRegionSegment(unsigned int unSegNum, bool bImm, bool bLossless, unsigned int unLength);
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JBIG2Bitmap *ReadGenericBitmap(bool bMMr, int nW, int nH, int unTempl, bool bTpgdOn, bool bUseSkip, JBIG2Bitmap *pSkip, int *pATx, int *pATy, int nMMrDataLength);
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void ReadGenericRefinementRegionSegment(unsigned int unSegNum, bool bImm, bool bLossless, unsigned int unLength, unsigned int *punRefSegs, unsigned int unRefSegsCount);
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JBIG2Bitmap *ReadGenericRefinementRegion(int nW, int nH, int nTempl, bool bTpgrOn, JBIG2Bitmap *pRefBitmap, int nRefDX, int nRefDY, int *pnAtx, int *pnAty);
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void ReadPageInfoSegment(unsigned int unLength);
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void ReadEndOfStripeSegment(unsigned int unLength);
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void ReadProfilesSegment(unsigned int unLength);
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void ReadCodeTableSegment(unsigned int unSegNum, unsigned int unLength);
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void ReadExtensionSegment(unsigned int unLength);
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JBIG2Segment *FindSegment(unsigned int unSegNum);
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void DiscardSegment(unsigned int unSegNum);
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void ResetGenericStats(unsigned int unTempl, JArithmeticDecoderStats *pPrevStats);
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void ResetRefinementStats(unsigned int unTempl, JArithmeticDecoderStats *pPrevStats);
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void ResetIntStats(int nSymCodeLen);
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bool ReadUByte(unsigned int *pBuffer);
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bool ReadByte(int *pBuffer);
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bool ReadUWord(unsigned int *pBuffer);
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bool ReadULong(unsigned int *pBuffer);
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bool ReadLong(int *pBuffer);
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private:
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Object m_oGlobalsStream;
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unsigned int m_unPageW;
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unsigned int m_unPageH;
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unsigned int m_unCurPageH;
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unsigned int m_unPageDefPixel;
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JBIG2Bitmap *m_pPageBitmap;
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unsigned int m_unDefCombOp;
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CList *m_pSegments; // [JBIG2Segment]
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CList *m_pGlobalSegments; // [JBIG2Segment]
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Stream *m_pCurStream;
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unsigned char *m_pDataPtr;
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unsigned char *m_pDataEnd;
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JArithmeticDecoder *m_pArithDecoder;
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JArithmeticDecoderStats *m_pGenericRegionStats;
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JArithmeticDecoderStats *m_pRefinementRegionStats;
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JArithmeticDecoderStats *m_pIadhStats;
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JArithmeticDecoderStats *m_pIadwStats;
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JArithmeticDecoderStats *m_pIaexStats;
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JArithmeticDecoderStats *m_pIaaiStats;
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JArithmeticDecoderStats *m_pIadtStats;
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JArithmeticDecoderStats *m_pIaitStats;
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JArithmeticDecoderStats *m_pIafsStats;
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JArithmeticDecoderStats *m_pIadsStats;
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JArithmeticDecoderStats *m_pIardxStats;
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JArithmeticDecoderStats *m_pIardyStats;
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JArithmeticDecoderStats *m_pIardwStats;
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JArithmeticDecoderStats *m_pIardhStats;
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JArithmeticDecoderStats *m_pIariStats;
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JArithmeticDecoderStats *m_pIaidStats;
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JBIG2HuffmanDecoder *m_pHuffDecoder;
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JBIG2MMRDecoder *m_pMMrDecoder;
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};
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}
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#endif // _PDF_READER_JBIG2STREAM_H
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