lzmadecoder.h

lzma算法的源码,这个算法的简写请google一把,仅用于学习之用.

// LzmaDecoder.h

#ifndef __LZMA_DECODER_H
#define __LZMA_DECODER_H

extern "C"
{
#include "../../../C/LzmaDec.h"
}

#include "../../Common/MyCom.h"
#include "../ICoder.h"

namespace NCompress {
namespace NLzma {

class CDecoder:
  public ICompressCoder,
  public ICompressSetDecoderProperties2,
  public ICompressGetInStreamProcessedSize,
  #ifndef NO_READ_FROM_CODER
  public ICompressSetInStream,
  public ICompressSetOutStreamSize,
  public ISequentialInStream,
  #endif
  public CMyUnknownImp
{
  CMyComPtr<ISequentialInStream> _inStream;
  Byte *_inBuf;
  UInt32 _inPos;
  UInt32 _inSize;
  CLzmaDec _state;
  bool _outSizeDefined;
  UInt64 _outSize;
  UInt64 _inSizeProcessed;
  UInt64 _outSizeProcessed;
public:

  #ifndef NO_READ_FROM_CODER
  MY_UNKNOWN_IMP5(
      ICompressSetDecoderProperties2,
      ICompressGetInStreamProcessedSize,
      ICompressSetInStream,
      ICompressSetOutStreamSize,
      ISequentialInStream)
  #else
  MY_UNKNOWN_IMP2(
      ICompressSetDecoderProperties2,
      ICompressGetInStreamProcessedSize)
  #endif

  STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
      const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
  STDMETHOD(SetDecoderProperties2)(const Byte *data, UInt32 size);
  STDMETHOD(GetInStreamProcessedSize)(UInt64 *value);
  STDMETHOD(SetInStream)(ISequentialInStream *inStream);
  STDMETHOD(ReleaseInStream)();
  STDMETHOD(SetOutStreamSize)(const UInt64 *outSize);

  #ifndef NO_READ_FROM_CODER
  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
  #endif

  bool FinishStream;

  CDecoder();
  virtual ~CDecoder();

};

}}

#endif