1 // LockedStream.cpp

     2 

     3 #include "StdAfx.h"

     4 

     5 #include "LockedStream.h"

     6 

     7 HRESULT CLockedInStream::Read(UInt64 startPos, void *data, UInt32 size, 

     8   UInt32 *processedSize)

     9 {

    10   NWindows::NSynchronization::CCriticalSectionLock lock(_criticalSection);

    11   RINOK(_stream->Seek(startPos, STREAM_SEEK_SET, NULL));

    12   return _stream->Read(data, size, processedSize);

    13 }

    14 

    15 STDMETHODIMP CLockedSequentialInStreamImp::Read(void *data, UInt32 size, UInt32 *processedSize)

    16 {

    17   UInt32 realProcessedSize = 0;

    18   HRESULT result = _lockedInStream->Read(_pos, data, size, &realProcessedSize);

    19   _pos += realProcessedSize;

    20   if (processedSize != NULL)

    21     *processedSize = realProcessedSize;

    22   return result;

    23 }