private void RenderToWavDest(
string outputFile,
IBaseFilter audioCompressor,
AMMediaType mediaType,
ICallbackParticipant[] audioParticipants)
{
if (audioCompressor != null)
{
Cleanup.Add(audioCompressor);
}
int hr;
if (FirstAudioGroup == null)
{
throw new SplicerException(Resources.ErrorNoAudioStreamToRender);
}
if (outputFile == null)
{
throw new SplicerException(Resources.ErrorInvalidOutputFileName);
}
// Contains useful routines for creating the graph
var graphBuilder = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
Cleanup.Add(graphBuilder);
try
{
hr = graphBuilder.SetFiltergraph(Graph);
DESError.ThrowExceptionForHR(hr);
IBaseFilter wavDestFilter = StandardFilters.RenderWavDestination(Cleanup, Graph);
IBaseFilter fileSink = StandardFilters.RenderFileDestination(Cleanup, Graph, outputFile);
try
{
RenderGroups(graphBuilder, audioCompressor, null, wavDestFilter, audioParticipants, null);
FilterGraphTools.ConnectFilters(Graph, wavDestFilter, fileSink, true);
// if supplied, apply the media type to the filter
if (mediaType != null)
{
FilterGraphTools.SetFilterFormat(mediaType, audioCompressor);
}
DisableClock();
}
finally
{
if (wavDestFilter != null)
{
Marshal.ReleaseComObject(wavDestFilter);
}
if (fileSink != null)
{
Marshal.ReleaseComObject(fileSink);
}
}
}
finally
{
Marshal.ReleaseComObject(graphBuilder);
}
}