3.13

2025-12-14 16:11:38 -06:00 · 2003-12-11 00:00:00 +00:00
commit 8c1b5c7b7e
982 changed files with 118799 additions and 0 deletions
--- a/7zip/Compress/Deflate/DeflateEncoder.h
+++ b/7zip/Compress/Deflate/DeflateEncoder.h
@@ -0,0 +1,197 @@
+// DeflateEncoder.h
+
+#pragma once
+
+#ifndef __DEFLATE_ENCODER_H
+#define __DEFLATE_ENCODER_H
+
+#include "Common/MyCom.h"
+
+#include "../../ICoder.h"
+#include "../../Common/LSBFEncoder.h"
+#include "../LZ/BinTree/BinTree3Z.h"
+#include "../Huffman/HuffmanEncoder.h"
+
+#include "DeflateConst.h"
+
+namespace NCompress {
+namespace NDeflate {
+namespace NEncoder {
+
+struct CCodeValue
+{
+  BYTE Flag;
+  union
+  {
+    BYTE Imm;
+    BYTE Len;
+  };
+  UINT16 Pos;
+};
+
+class COnePosMatches
+{
+public:
+  UINT16 *MatchDistances;
+  UINT16 LongestMatchLength;    
+  UINT16 LongestMatchDistance;
+  void Init(UINT16 *matchDistances)
+  {
+    MatchDistances = matchDistances;
+  };
+};
+
+struct COptimal
+{
+  UINT32 Price;
+  UINT16 PosPrev;
+  UINT16 BackPrev;
+};
+
+const int kNumOpts = 0x1000;
+
+class CCoder
+{
+  UINT32 m_FinderPos;
+  
+  COptimal m_Optimum[kNumOpts];
+  
+  // CComPtr<IInWindowStreamMatch> m_MatchFinder;
+  NBT3Z::CInTree m_MatchFinder;
+
+  NStream::NLSBF::CEncoder m_OutStream;
+  NStream::NLSBF::CReverseEncoder m_ReverseOutStream;
+  
+  NCompression::NHuffman::CEncoder m_MainCoder;
+  NCompression::NHuffman::CEncoder m_DistCoder;
+  NCompression::NHuffman::CEncoder m_LevelCoder;
+
+  BYTE m_LastLevels[kMaxTableSize64];
+
+  UINT32 m_ValueIndex;
+  CCodeValue *m_Values;
+
+  UINT32 m_OptimumEndIndex;
+  UINT32 m_OptimumCurrentIndex;
+  UINT32 m_AdditionalOffset;
+
+  UINT32 m_LongestMatchLength;    
+  UINT32 m_LongestMatchDistance;
+  UINT16 *m_MatchDistances;
+
+  UINT32 m_NumFastBytes;
+  UINT32 m_MatchLengthEdge;
+
+  BYTE  m_LiteralPrices[256];
+  
+  BYTE  m_LenPrices[kNumLenCombinations32];
+  BYTE  m_PosPrices[kDistTableSize64];
+
+  UINT32 m_CurrentBlockUncompressedSize;
+
+  COnePosMatches *m_OnePosMatchesArray;
+  UINT16 *m_OnePosMatchesMemory;
+
+  UINT64 m_BlockStartPostion;
+  int m_NumPasses;
+
+  bool m_Created;
+
+  bool _deflate64Mode;
+  UINT32 m_NumLenCombinations;
+  UINT32 m_MatchMaxLen;
+  const BYTE *m_LenStart;
+  const BYTE *m_LenDirectBits;
+
+  HRESULT Create();
+  void Free();
+
+  void GetBacks(UINT32 aPos);
+
+  void ReadGoodBacks();
+  void MovePos(UINT32 num);
+  UINT32 Backward(UINT32 &backRes, UINT32 cur);
+  UINT32 GetOptimal(UINT32 &backRes);
+
+  void InitStructures();
+  void CodeLevelTable(BYTE *newLevels, int numLevels, bool codeMode);
+  int WriteTables(bool writeMode, bool finalBlock);
+  void CopyBackBlockOp(UINT32 distance, UINT32 length);
+  void WriteBlockData(bool writeMode, bool finalBlock);
+
+  /*
+  void CCoder::ReleaseStreams()
+  {
+    m_MatchFinder.ReleaseStream();
+    m_OutStream.ReleaseStream();
+  }
+  class CCoderReleaser
+  {
+    CCoder *m_Coder;
+  public:
+    CCoderReleaser(CCoder *aCoder): m_Coder(aCoder) {}
+    ~CCoderReleaser()
+    {
+      m_Coder->ReleaseStreams();
+    }
+  };
+  friend class CCoderReleaser;
+  */
+
+public:
+  CCoder(bool deflate64Mode = false);
+  ~CCoder();
+
+  HRESULT CodeReal(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
+      ICompressProgressInfo *progress);
+
+  HRESULT BaseCode(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
+      ICompressProgressInfo *progress);
+
+  // ICompressSetCoderProperties
+  HRESULT BaseSetEncoderProperties2(const PROPID *propIDs, 
+      const PROPVARIANT *properties, UINT32 numProperties);
+};
+
+///////////////////////////////////////////////////////////////
+
+class CCOMCoder :
+  public ICompressCoder,
+  public ICompressSetCoderProperties, 
+  public CMyUnknownImp,
+  public CCoder
+{
+public:
+  MY_UNKNOWN_IMP1(ICompressSetCoderProperties)
+  CCOMCoder(): CCoder(false) {};
+  STDMETHOD(Code)(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
+      ICompressProgressInfo *progress);
+  // ICompressSetCoderProperties
+  STDMETHOD(SetCoderProperties)(const PROPID *propIDs, 
+      const PROPVARIANT *properties, UINT32 numProperties);
+};
+
+class CCOMCoder64 :
+  public ICompressCoder,
+  public ICompressSetCoderProperties,
+  public CMyUnknownImp,
+  public CCoder
+{
+public:
+  MY_UNKNOWN_IMP1(ICompressSetCoderProperties)
+  CCOMCoder64(): CCoder(true) {};
+  STDMETHOD(Code)(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
+      ICompressProgressInfo *progress);
+  // ICompressSetCoderProperties
+  STDMETHOD(SetCoderProperties)(const PROPID *propIDs, 
+      const PROPVARIANT *properties, UINT32 numProperties);
+};
+
+
+}}}
+
+#endif