1 // PpmdDecoder.h 2 // 2009-03-11 : Igor Pavlov : Public domain 3 4 #ifndef __COMPRESS_PPMD_DECODER_H 5 #define __COMPRESS_PPMD_DECODER_H 6 7 #include "../../../C/Ppmd7.h" 8 9 #include "../../Common/MyCom.h" 10 11 #include "../Common/CWrappers.h" 12 13 #include "../ICoder.h" 14 15 namespace NCompress { 16 namespace NPpmd { 17 18 class CDecoder : 19 public ICompressCoder, 20 public ICompressSetDecoderProperties2, 21 #ifndef NO_READ_FROM_CODER 22 public ICompressSetInStream, 23 public ICompressSetOutStreamSize, 24 public ISequentialInStream, 25 #endif 26 public CMyUnknownImp 27 { 28 Byte *_outBuf; 29 CPpmd7z_RangeDec _rangeDec; 30 CByteInBufWrap _inStream; 31 CPpmd7 _ppmd; 32 33 Byte _order; 34 bool _outSizeDefined; 35 int _status; 36 UInt64 _outSize; 37 UInt64 _processedSize; 38 39 HRESULT CodeSpec(Byte *memStream, UInt32 size); 40 41 public: 42 43 #ifndef NO_READ_FROM_CODER 44 CMyComPtr<ISequentialInStream> InSeqStream; 45 MY_UNKNOWN_IMP4( 46 ICompressSetDecoderProperties2, 47 ICompressSetInStream, 48 ICompressSetOutStreamSize, 49 ISequentialInStream) 50 #else 51 MY_UNKNOWN_IMP1( 52 ICompressSetDecoderProperties2) 53 #endif 54 55 STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream, 56 const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress); 57 STDMETHOD(SetDecoderProperties2)(const Byte *data, UInt32 size); 58 STDMETHOD(SetOutStreamSize)(const UInt64 *outSize); 59 60 #ifndef NO_READ_FROM_CODER 61 STDMETHOD(SetInStream)(ISequentialInStream *inStream); 62 STDMETHOD(ReleaseInStream)(); 63 STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize); 64 #endif 65 66 CDecoder(): _outBuf(NULL), _outSizeDefined(false) 67 { 68 Ppmd7z_RangeDec_CreateVTable(&_rangeDec); 69 _rangeDec.Stream = &_inStream.p; 70 Ppmd7_Construct(&_ppmd); 71 } 72 73 ~CDecoder(); 74 }; 75 76 }} 77 78 #endif 79
