public void RenderToWavDest(
string outputFile,
IBaseFilter audioCompressor,
AMMediaType mediaType,
IDESCombineCB audioCallback)
{
if (audioCompressor != null)
{
_dc.Add(audioCompressor);
}
int hr;
if (_firstAudioGroup == null)
{
throw new SplicerException("No audio stream to render");
}
if (outputFile == null)
{
throw new SplicerException("Output file name cannot be null");
}
// Contains useful routines for creating the graph
ICaptureGraphBuilder2 icgb = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
_dc.Add(icgb);
try
{
hr = icgb.SetFiltergraph(_graph);
DESError.ThrowExceptionForHR(hr);
IBaseFilter wavDestFilter = StandardFilters.RenderWavDest(_dc, _graph);
IBaseFilter fileSink = StandardFilters.RenderFileDestination(_dc, _graph, outputFile);
try
{
RenderGroups(icgb, audioCompressor, null, wavDestFilter, audioCallback, null);
FilterGraphTools.ConnectFilters(_graph, wavDestFilter, fileSink, true);
// if supplied, apply the media type to the filter
if (mediaType != null)
{
FilterGraphTools.SetFilterFormat(mediaType, audioCompressor);
}
}
finally
{
Marshal.ReleaseComObject(wavDestFilter);
Marshal.ReleaseComObject(fileSink);
}
}
finally
{
Marshal.ReleaseComObject(icgb);
}
}