svtools/source/filter.vcl/igif/decode.hxx

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  30
  31 #ifndef _DECODE_HXX
  32 #define _DECODE_HXX
  33
  34 #ifndef _BMPACC_HXX
  35 #include <vcl/bmpacc.hxx>
  36 #endif
  37
  38 struct GIFLZWTableEntry;
  39
  40 class GIFLZWDecompressor
  41 {
  42     GIFLZWTableEntry*   pTable;
  43     HPBYTE                              pOutBuf;
  44     HPBYTE                              pOutBufData;
  45     HPBYTE                              pBlockBuf;
  46     ULONG                               nInputBitsBuf;
  47     USHORT                              nTableSize;
  48     USHORT                              nClearCode;
  49     USHORT                              nEOICode;
  50     USHORT                              nCodeSize;
  51     USHORT                              nOldCode;
  52     USHORT                              nOutBufDataLen;
  53     USHORT                              nInputBitsBufSize;
  54     BOOL                                bEOIFound;
  55     BYTE                                nDataSize;
  56     BYTE                                nBlockBufSize;
  57     BYTE                                nBlockBufPos;
  58
  59     void                                AddToTable(USHORT nPrevCode, USHORT nCodeFirstData);
  60     BOOL                                ProcessOneCode();
  61
  62
  63 public:
  64
  65                         GIFLZWDecompressor( BYTE cDataSize );
  66                         ~GIFLZWDecompressor();
  67
  68     HPBYTE                              DecompressBlock( HPBYTE pSrc, BYTE cBufSize, ULONG& rCount, BOOL& rEOI );
  69 };
  70
  71 #endif