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);
}
}
public static IBaseFilter CreateAudioCompressor(DisposalCleanup dc, IGraphBuilder graph, IPin outPin,
AudioFormat settings)
{
if (dc == null)
{
throw new ArgumentNullException("dc");
}
if (graph == null)
{
throw new ArgumentNullException("graph");
}
if (outPin == null)
{
throw new ArgumentNullException("outPin");
}
if (settings == null)
{
throw new ArgumentNullException("settings");
}
int hr = 0;
using (AudioCompressor compressor = AudioCompressorFactory.Create(settings))
{
IBaseFilter compressorFilter = compressor.Filter;
dc.Add(compressorFilter);
hr = graph.AddFilter(compressorFilter, settings.AudioCompressor);
DsError.ThrowExceptionForHR(hr);
FilterGraphTools.ConnectFilters(graph, outPin, compressorFilter, true);
// set the media type on the output pin of the compressor
if (compressor.MediaType != null)
{
FilterGraphTools.SetFilterFormat(compressor.MediaType, compressorFilter);
}
return(compressorFilter);
}
}
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);
}
}
