1// 7zSpecStream.h
2
3#ifndef __7Z_SPEC_STREAM_H
4#define __7Z_SPEC_STREAM_H
5
6#include "../../IStream.h"
7#include "../../ICoder.h"
8#include "../../../Common/MyCom.h"
9
10class CSequentialInStreamSizeCount2:
11  public ISequentialInStream,
12  public ICompressGetSubStreamSize,
13  public CMyUnknownImp
14{
15  CMyComPtr<ISequentialInStream> _stream;
16  CMyComPtr<ICompressGetSubStreamSize> _getSubStreamSize;
17  UInt64 _size;
18public:
19  void Init(ISequentialInStream *stream)
20  {
21    _stream = stream;
22    _getSubStreamSize = 0;
23    _stream.QueryInterface(IID_ICompressGetSubStreamSize, &_getSubStreamSize);
24    _size = 0;
25  }
26  UInt64 GetSize() const { return _size; }
27
28  MY_UNKNOWN_IMP1(ICompressGetSubStreamSize)
29
30  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
31
32  STDMETHOD(GetSubStreamSize)(UInt64 subStream, UInt64 *value);
33};
34
35#endif
36