CreateInputSource
CSmartPtr<CInputSource> spInputSource(CreateInputSource(pInputFilename, &WaveFormatEx, &nAudioBlocks,
DLLEXPORT CInputSource* __stdcall CreateInputSource(const char* pSourceName, WAVEFORMATEX * pwfeSource, int * pTotalBlocks, int * pHeaderBytes, int * pTerminatingBytes, int * pErrorCode = NULL);