// OutStreamWithCRC.cpp

#include "StdAfx.h"

#include "OutStreamWithCRC.h"

STDMETHODIMP COutStreamWithCRC::Write(const void *data, UInt32 size, UInt32 *processedSize)

{

UInt32 realProcessedSize;

HRESULT result;

if(!_stream)

{

realProcessedSize = size;

result = S_OK;

}

else

result = _stream->Write(data, size, &realProcessedSize);

if (_calculate)

_crc = CrcUpdate(_crc, data, realProcessedSize);

_size += realProcessedSize;

if(processedSize != NULL)

*processedSize = realProcessedSize;

return result;

}