lzmaencoder.h

来自「7z一个高压缩比的压缩程序源代码,重要的是里面的算法值得学习」· C头文件 代码 · 共 65 行

// LzmaEncoder.h

#ifndef __LZMA_ENCODER_H
#define __LZMA_ENCODER_H

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

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

#include "../ICoder.h"

namespace NCompress {
namespace NLzma {

struct CSeqInStream
{
  ISeqInStream SeqInStream;
  ISequentialInStream *RealStream;
};

struct CSeqOutStream
{
  ISeqOutStream SeqOutStream;
  CMyComPtr<ISequentialOutStream> RealStream;
  HRESULT Res;
};

class CEncoder :
  public ICompressCoder,
  public ICompressSetOutStream,
  public ICompressSetCoderProperties,
  public ICompressWriteCoderProperties,
  public CMyUnknownImp
{
  CLzmaEncHandle _encoder;
 
  CSeqInStream _seqInStream;
  CSeqOutStream _seqOutStream;

public:
  CEncoder();

  MY_UNKNOWN_IMP3(
      ICompressSetOutStream,
      ICompressSetCoderProperties,
      ICompressWriteCoderProperties
      )
    
  STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
      const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
  STDMETHOD(SetCoderProperties)(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps);
  STDMETHOD(WriteCoderProperties)(ISequentialOutStream *outStream);
  STDMETHOD(SetOutStream)(ISequentialOutStream *outStream);
  STDMETHOD(ReleaseOutStream)();

  virtual ~CEncoder();
};

}}

#endif