decoder.h

经过项目量产验证的代码.开发环境是sparc+vxworks. 这个LZMA是专门为sparc做的优化压缩,性能是最好的.

// LZArichmetic/Decoder.h


#ifndef __LZARITHMETIC_DECODER_H
#define __LZARITHMETIC_DECODER_H

#include "WindowOut.h"

#include "LZMA.h"
#include "LenCoder.h"
#include "LiteralCoder.h"

class CDecoder
{
  COut m_OutWindowStream;
  CRangeDecoder m_RangeDecoder;

  CBitDecoder m_MainChoiceDecoders[kNumStates][kLenNumPosStatesMax];
  CBitDecoder m_MatchChoiceDecoders[kNumStates];
  CBitDecoder m_MatchRepChoiceDecoders[kNumStates];
  CBitDecoder m_MatchRep1ChoiceDecoders[kNumStates];
  CBitDecoder m_MatchRep2ChoiceDecoders[kNumStates];
  CBitDecoder m_MatchRepShortChoiceDecoders[kNumStates][kLenNumPosStatesMax];

  CBitTreeDecoder6 m_PosSlotDecoder[kNumLenToPosStates];

  CReverseBitTreeDecoder2 m_PosDecoders[kNumPosModels];
  CReverseBitTreeDecoder4 m_PosAlignDecoder;
  
  CLenDecoder m_LenDecoder;
  CLenDecoder m_RepMatchLenDecoder;

  CLiteralDecoder m_LiteralDecoder;

  int m_PosStateMask;

public:

  BYTE *Create(BYTE *memoryPointer, const BYTE *properties);
  
  bool Code(const BYTE *inStream,
      BYTE *outStream, UINT32 inSize, UINT32 outSize);
};

#endif