3.13

7zip/Compress/LZMA/LZMADecoder.h

@@ -0,0 +1,107 @@
+// LZMA/Decoder.h
+
+// #pragma once 
+
+#ifndef __LZMA_DECODER_H
+#define __LZMA_DECODER_H
+
+#include "../../ICoder.h"
+#include "../../../Common/MyCom.h"
+#include "../LZ/LZOutWindow.h"
+
+#include "LZMA.h"
+#include "LZMALen.h"
+#include "LZMALiteral.h"
+
+namespace NCompress {
+namespace NLZMA {
+
+typedef NRangeCoder::CBitDecoder<kNumMoveBits> CMyBitDecoder;
+
+class CDecoder: 
+  public ICompressCoder,
+  public ICompressSetDecoderProperties,
+  public CMyUnknownImp
+{
+  CLZOutWindow _outWindowStream;
+  NRangeCoder::CDecoder _rangeDecoder;
+
+  CMyBitDecoder _mainChoiceDecoders[kNumStates][NLength::kNumPosStatesMax];
+  CMyBitDecoder _matchChoiceDecoders[kNumStates];
+  CMyBitDecoder _matchRepChoiceDecoders[kNumStates];
+  CMyBitDecoder _matchRep1ChoiceDecoders[kNumStates];
+  CMyBitDecoder _matchRep2ChoiceDecoders[kNumStates];
+  CMyBitDecoder _matchRepShortChoiceDecoders[kNumStates][NLength::kNumPosStatesMax];
+
+  NRangeCoder::CBitTreeDecoder<kNumMoveBits, kNumPosSlotBits> _posSlotDecoder[kNumLenToPosStates];
+
+  NRangeCoder::CReverseBitTreeDecoder2<kNumMoveBits> _posDecoders[kNumPosModels];
+  NRangeCoder::CReverseBitTreeDecoder<kNumMoveBits, kNumAlignBits> _posAlignDecoder;
+  
+  NLength::CDecoder _lenDecoder;
+  NLength::CDecoder _repMatchLenDecoder;
+
+  NLiteral::CDecoder _literalDecoder;
+
+  UINT32 _dictionarySize;
+  UINT32 _dictionarySizeCheck;
+  
+  UINT32 _posStateMask;
+
+public:
+
+  MY_UNKNOWN_IMP1(ICompressSetDecoderProperties)
+
+  CDecoder();
+  HRESULT Create();
+
+
+  HRESULT Init(ISequentialInStream *inStream, 
+      ISequentialOutStream *outStream);
+  /*
+  void ReleaseStreams()
+  {
+    _outWindowStream.ReleaseStream();
+    _rangeDecoder.ReleaseStream();
+  }
+  */
+
+  class CDecoderFlusher
+  {
+    CDecoder *_decoder;
+  public:
+    bool NeedFlush;
+    CDecoderFlusher(CDecoder *decoder): 
+          _decoder(decoder), NeedFlush(true) {}
+    ~CDecoderFlusher() 
+    { 
+      if (NeedFlush)
+        _decoder->Flush();
+      // _decoder->ReleaseStreams(); 
+    }
+  };
+
+  HRESULT Flush()
+    {  return _outWindowStream.Flush(); }  
+
+  // ICompressCoder interface
+  STDMETHOD(CodeReal)(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
+      ICompressProgressInfo *progress);
+  
+  STDMETHOD(Code)(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
+      ICompressProgressInfo *progress);
+
+  // ICompressSetDecoderProperties
+  STDMETHOD(SetDecoderProperties)(ISequentialInStream *inStream);
+
+  HRESULT SetDictionarySize(UINT32 dictionarySize);
+  HRESULT SetLiteralProperties(UINT32 numLiteralPosStateBits, 
+      UINT32 numLiteralContextBits);
+  HRESULT SetPosBitsProperties(UINT32 numPosStateBits);
+};
+
+}}
+
+#endif