void BuildAudioCaptureGraph(void) // Warning! No error checking here.
{
IBaseFilter *pSrc = NULL, *pWaveDest = NULL, *pWriter = NULL;
IFileSinkFilter *pSink= NULL;
IGraphBuilder *pGraph;
// Create the Filter Graph Manager.
CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void**)&pGraph);
// Add the audio capture filter.
FindAudioCapture(&pSrc); // Assume that this function enumerates
// audio capture devices and picks one.
pGraph->AddFilter(pSrc, L"Capture");
// Add the WavDest and the File Writer.
AddFilterByClsid(pGraph, L"WavDest", CLSID_WavDest, &pWavDest);
AddFilterByClsid(pGraph, L"File Writer", CLSID_FileWriter, &pWriter);
// Set the file name.
pWriter->QueryInterface(IID_IFileSinkFilter, (void**)&pSink);
pSink->SetFileName(L"C:\\MyWackyWav.wav", NULL);
// Hook everything up.
ConnectTwoFilters(pGraph, pSrc, pWavDest);
ConnectTwoFilters(pGraph, pWavDest, pWriter);
} |
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