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 

    10 class CSequentialInStreamSizeCount2: 

    11   public ISequentialInStream,

    12   public ICompressGetSubStreamSize,

    13   public CMyUnknownImp

    14 {

    15   CMyComPtr<ISequentialInStream> _stream;

    16   CMyComPtr<ICompressGetSubStreamSize> _getSubStreamSize;

    17   UInt64 _size;

    18 public:

    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