public ISequentialInStream,

public CMyUnknownImp

{

public:

MY_UNKNOWN_IMP

STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);

private:

CMyComPtr<ISequentialInStream> _stream;

UInt64 _size;

UInt32 _crc;

bool _wasFinished;

public:

void SetStream(ISequentialInStream *stream) { _stream = stream; }

void Init()

{

_size = 0;

_wasFinished = false;

_crc = CRC_INIT_VAL;

}

void ReleaseStream() { _stream.Release(); }

UInt32 GetCRC() const { return CRC_GET_DIGEST(_crc); }

UInt64 GetSize() const { return _size; }

bool WasFinished() const { return _wasFinished; }

public IInStream,

public CMyUnknownImp

{

public:

MY_UNKNOWN_IMP1(IInStream)

STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);

STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition);

private:

CMyComPtr<IInStream> _stream;

UInt64 _size;

UInt32 _crc;

bool _wasFinished;

public:

void SetStream(IInStream *stream) { _stream = stream; }

void Init()

{

_size = 0;

_wasFinished = false;

_crc = CRC_INIT_VAL;

}

void ReleaseStream() { _stream.Release(); }

UInt32 GetCRC() const { return CRC_GET_DIGEST(_crc); }

UInt64 GetSize() const { return _size; }

bool WasFinished() const { return _wasFinished; }