xref: /third_party/lzma/CPP/7zip/Compress/PpmdDecoder.h

// PpmdDecoder.h

#ifndef ZIP7_INC_COMPRESS_PPMD_DECODER_H
#define ZIP7_INC_COMPRESS_PPMD_DECODER_H

#include "../../../C/Ppmd7.h"

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

#include "../ICoder.h"

#include "../Common/CWrappers.h"

namespace NCompress {
namespace NPpmd {

class CDecoder Z7_final:
  public ICompressCoder,
  public ICompressSetDecoderProperties2,
  public ICompressSetFinishMode,
  public ICompressGetInStreamProcessedSize,
 #ifndef Z7_NO_READ_FROM_CODER
  public ICompressSetInStream,
  public ICompressSetOutStreamSize,
  public ISequentialInStream,
 #endif
  public CMyUnknownImp
{
  Z7_COM_QI_BEGIN2(ICompressCoder)
  Z7_COM_QI_ENTRY(ICompressSetDecoderProperties2)
  Z7_COM_QI_ENTRY(ICompressSetFinishMode)
  Z7_COM_QI_ENTRY(ICompressGetInStreamProcessedSize)
 #ifndef Z7_NO_READ_FROM_CODER
  Z7_COM_QI_ENTRY(ICompressSetInStream)
  Z7_COM_QI_ENTRY(ICompressSetOutStreamSize)
  Z7_COM_QI_ENTRY(ISequentialInStream)
 #endif
  Z7_COM_QI_END
  Z7_COM_ADDREF_RELEASE

  Z7_IFACE_COM7_IMP(ICompressCoder)
  Z7_IFACE_COM7_IMP(ICompressSetDecoderProperties2)
  Z7_IFACE_COM7_IMP(ICompressSetFinishMode)
  Z7_IFACE_COM7_IMP(ICompressGetInStreamProcessedSize)
 #ifndef Z7_NO_READ_FROM_CODER
  Z7_IFACE_COM7_IMP(ICompressSetOutStreamSize)
  Z7_IFACE_COM7_IMP(ICompressSetInStream)
  Z7_IFACE_COM7_IMP(ISequentialInStream)
 #else
  Z7_COM7F_IMF(SetOutStreamSize(const UInt64 *outSize));
 #endif

  Byte *_outBuf;
  CByteInBufWrap _inStream;
  CPpmd7 _ppmd;

  Byte _order;
  bool  FinishStream;
  bool _outSizeDefined;
  HRESULT _res;
  int _status;
  UInt64 _outSize;
  UInt64 _processedSize;

  HRESULT CodeSpec(Byte *memStream, UInt32 size);

public:

 #ifndef Z7_NO_READ_FROM_CODER
  CMyComPtr<ISequentialInStream> InSeqStream;
 #endif

  CDecoder():
      _outBuf(NULL),
      FinishStream(false),
      _outSizeDefined(false)
  {
    Ppmd7_Construct(&_ppmd);
    _ppmd.rc.dec.Stream = &_inStream.vt;
  }

  ~CDecoder();
};

}}

#endif