protected void destroyGraph()
{
try
{
this.derenderGraph();
}
catch
{
}
this.graphState = GraphState.Null;
this.isCaptureRendered = false;
this.isPreviewRendered = false;
if (this.rotCookie != 0)
{
DsROT.RemoveGraphFromRot(ref this.rotCookie);
this.rotCookie = 0;
}
if (this.muxFilter != null)
{
this.graphBuilder.RemoveFilter(this.muxFilter);
}
if (this.videoCompressorFilter != null)
{
this.graphBuilder.RemoveFilter(this.videoCompressorFilter);
}
if (this.audioCompressorFilter != null)
{
this.graphBuilder.RemoveFilter(this.audioCompressorFilter);
}
if (this.videoDeviceFilter != null)
{
this.graphBuilder.RemoveFilter(this.videoDeviceFilter);
}
if (this.audioDeviceFilter != null)
{
this.graphBuilder.RemoveFilter(this.audioDeviceFilter);
}
if (this.videoSources != null)
{
this.videoSources.Dispose();
}
this.videoSources = null;
if (this.audioSources != null)
{
this.audioSources.Dispose();
}
this.audioSources = null;
if (this.propertyPages != null)
{
this.propertyPages.Dispose();
}
this.propertyPages = null;
if (this.tuner != null)
{
this.tuner.Dispose();
}
this.tuner = null;
if (this.graphBuilder != null)
{
Marshal.ReleaseComObject(this.graphBuilder);
}
this.graphBuilder = null;
if (this.captureGraphBuilder != null)
{
Marshal.ReleaseComObject(this.captureGraphBuilder);
}
this.captureGraphBuilder = null;
if (this.muxFilter != null)
{
Marshal.ReleaseComObject(this.muxFilter);
}
this.muxFilter = null;
if (this.fileWriterFilter != null)
{
Marshal.ReleaseComObject(this.fileWriterFilter);
}
this.fileWriterFilter = null;
if (this.videoDeviceFilter != null)
{
Marshal.ReleaseComObject(this.videoDeviceFilter);
}
this.videoDeviceFilter = null;
if (this.audioDeviceFilter != null)
{
Marshal.ReleaseComObject(this.audioDeviceFilter);
}
this.audioDeviceFilter = null;
if (this.videoCompressorFilter != null)
{
Marshal.ReleaseComObject(this.videoCompressorFilter);
}
this.videoCompressorFilter = null;
if (this.audioCompressorFilter != null)
{
Marshal.ReleaseComObject(this.audioCompressorFilter);
}
this.audioCompressorFilter = null;
this.mediaControl = null;
this.videoWindow = null;
GC.Collect();
}
/// <summary>
/// Completely tear down a filter graph and
/// release all associated resources.
/// </summary>
protected void destroyGraph()
{
// Derender the graph (This will stop the graph
// and release preview window. It also destroys
// half of the graph which is unnecessary but
// harmless here.) (ignore errors)
try{ derenderGraph(); }
catch {}
// Update the state after derender because it
// depends on correct status. But we also want to
// update the state as early as possible in case
// of error.
graphState = GraphState.Null;
isCaptureRendered = false;
isPreviewRendered = false;
// Remove graph from the ROT
if ( rotCookie != 0 )
{
DsROT.RemoveGraphFromRot( ref rotCookie );
rotCookie = 0;
}
// Remove filters from the graph
// This should be unnecessary but the Nvidia WDM
// video driver cannot be used by this application
// again unless we remove it. Ideally, we should
// simply enumerate all the filters in the graph
// and remove them. (ignore errors)
if ( muxFilter != null )
graphBuilder.RemoveFilter( muxFilter );
//ELIMINAR RECURSOS CAPTURA <<<<<<<<<================================================
if ( baseGrabFlt != null )
graphBuilder.RemoveFilter( baseGrabFlt );
if ( videoCompressorFilter != null )
graphBuilder.RemoveFilter( videoCompressorFilter );
if ( audioCompressorFilter != null )
graphBuilder.RemoveFilter( audioCompressorFilter );
if ( videoDeviceFilter != null )
graphBuilder.RemoveFilter( videoDeviceFilter );
if ( audioDeviceFilter != null )
graphBuilder.RemoveFilter( audioDeviceFilter );
// Clean up properties
if ( videoSources != null )
videoSources.Dispose(); videoSources = null;
if ( audioSources != null )
audioSources.Dispose(); audioSources = null;
if ( propertyPages != null )
propertyPages.Dispose(); propertyPages = null;
if ( tuner != null )
tuner.Dispose(); tuner = null;
// Cleanup
if ( graphBuilder != null )
Marshal.ReleaseComObject( graphBuilder ); graphBuilder = null;
if ( captureGraphBuilder != null )
Marshal.ReleaseComObject( captureGraphBuilder ); captureGraphBuilder = null;
if ( muxFilter != null )
Marshal.ReleaseComObject( muxFilter ); muxFilter = null;
//ELIMINAR RECURSOS CAPTURA <<<<<<<<<================================================
if ( baseGrabFlt != null )
Marshal.ReleaseComObject( baseGrabFlt ); baseGrabFlt = null;
if ( fileWriterFilter != null )
Marshal.ReleaseComObject( fileWriterFilter ); fileWriterFilter = null;
if ( videoDeviceFilter != null )
Marshal.ReleaseComObject( videoDeviceFilter ); videoDeviceFilter = null;
if ( audioDeviceFilter != null )
Marshal.ReleaseComObject( audioDeviceFilter ); audioDeviceFilter = null;
if ( videoCompressorFilter != null )
Marshal.ReleaseComObject( videoCompressorFilter ); videoCompressorFilter = null;
if ( audioCompressorFilter != null )
Marshal.ReleaseComObject( audioCompressorFilter ); audioCompressorFilter = null;
// These are copies of graphBuilder
mediaControl = null;
videoWindow = null;
// For unmanaged objects we haven't released explicitly
GC.Collect();
}
protected void createGraph()
{
if ((this.videoDevice == null) && (this.audioDevice == null))
{
throw new ArgumentException("The video and/or audio device have not been set. Please set one or both to valid capture devices.\n");
}
if (this.graphState < GraphState.Created)
{
object obj2;
GC.Collect();
this.graphBuilder = (IGraphBuilder) Activator.CreateInstance(System.Type.GetTypeFromCLSID(Clsid.FilterGraph, true));
Guid clsid = Clsid.CaptureGraphBuilder2;
Guid gUID = typeof(ICaptureGraphBuilder2).GUID;
this.captureGraphBuilder = (ICaptureGraphBuilder2) DsBugWO.CreateDsInstance(ref clsid, ref gUID);
int errorCode = this.captureGraphBuilder.SetFiltergraph(this.graphBuilder);
if (errorCode < 0)
{
Marshal.ThrowExceptionForHR(errorCode);
}
if (this.VideoDevice != null)
{
this.videoDeviceFilter = (IBaseFilter) Marshal.BindToMoniker(this.VideoDevice.MonikerString);
errorCode = this.graphBuilder.AddFilter(this.videoDeviceFilter, "Video Capture Device");
if (errorCode < 0)
{
Marshal.ThrowExceptionForHR(errorCode);
}
}
if (this.AudioDevice != null)
{
this.audioDeviceFilter = (IBaseFilter) Marshal.BindToMoniker(this.AudioDevice.MonikerString);
errorCode = this.graphBuilder.AddFilter(this.audioDeviceFilter, "Audio Capture Device");
if (errorCode < 0)
{
Marshal.ThrowExceptionForHR(errorCode);
}
}
if (this.VideoCompressor != null)
{
this.videoCompressorFilter = (IBaseFilter) Marshal.BindToMoniker(this.VideoCompressor.MonikerString);
errorCode = this.graphBuilder.AddFilter(this.videoCompressorFilter, "Video Compressor");
if (errorCode < 0)
{
Marshal.ThrowExceptionForHR(errorCode);
}
}
if (this.AudioCompressor != null)
{
this.audioCompressorFilter = (IBaseFilter) Marshal.BindToMoniker(this.AudioCompressor.MonikerString);
errorCode = this.graphBuilder.AddFilter(this.audioCompressorFilter, "Audio Compressor");
if (errorCode < 0)
{
Marshal.ThrowExceptionForHR(errorCode);
}
}
Guid capture = PinCategory.Capture;
Guid interleaved = MediaType.Interleaved;
Guid riid = typeof(IAMStreamConfig).GUID;
if (this.captureGraphBuilder.FindInterface(ref capture, ref interleaved, this.videoDeviceFilter, ref riid, out obj2) != 0)
{
interleaved = MediaType.Video;
if (this.captureGraphBuilder.FindInterface(ref capture, ref interleaved, this.videoDeviceFilter, ref riid, out obj2) != 0)
{
obj2 = null;
}
}
this.videoStreamConfig = obj2 as IAMStreamConfig;
obj2 = null;
capture = PinCategory.Capture;
interleaved = MediaType.Audio;
riid = typeof(IAMStreamConfig).GUID;
if (this.captureGraphBuilder.FindInterface(ref capture, ref interleaved, this.audioDeviceFilter, ref riid, out obj2) != 0)
{
obj2 = null;
}
this.audioStreamConfig = obj2 as IAMStreamConfig;
this.mediaControl = (IMediaControl) this.graphBuilder;
if (this.videoSources != null)
{
this.videoSources.Dispose();
}
this.videoSources = null;
if (this.audioSources != null)
{
this.audioSources.Dispose();
}
this.audioSources = null;
if (this.propertyPages != null)
{
this.propertyPages.Dispose();
}
this.propertyPages = null;
this.videoCaps = null;
this.audioCaps = null;
obj2 = null;
capture = PinCategory.Capture;
interleaved = MediaType.Interleaved;
riid = typeof(IAMTVTuner).GUID;
if (this.captureGraphBuilder.FindInterface(ref capture, ref interleaved, this.videoDeviceFilter, ref riid, out obj2) != 0)
{
interleaved = MediaType.Video;
if (this.captureGraphBuilder.FindInterface(ref capture, ref interleaved, this.videoDeviceFilter, ref riid, out obj2) != 0)
{
obj2 = null;
}
}
IAMTVTuner tuner = obj2 as IAMTVTuner;
if (tuner != null)
{
this.tuner = new DirectX.Capture.Tuner(tuner);
}
this.graphState = GraphState.Created;
}
}
// --------------------- Private Methods -----------------------
/// <summary>
/// Create a new filter graph and add filters (devices, compressors,
/// misc), but leave the filters unconnected. Call renderGraph()
/// to connect the filters.
/// </summary>
protected void createGraph()
{
Guid cat;
Guid med;
int hr;
Type comType = null;
object comObj = null;
// Ensure required properties are set
if ( videoDevice == null && audioDevice == null )
throw new ArgumentException( "The video and/or audio device have not been set. Please set one or both to valid capture devices.\n" );
// Skip if we are already created
if ( (int)graphState < (int)GraphState.Created )
{
// Garbage collect, ensure that previous filters are released
GC.Collect();
// Make a new filter graph
graphBuilder = (IGraphBuilder) Activator.CreateInstance( Type.GetTypeFromCLSID( Clsid.FilterGraph, true ) );
// Get the Capture Graph Builder
Guid clsid = Clsid.CaptureGraphBuilder2;
Guid riid = typeof(ICaptureGraphBuilder2).GUID;
captureGraphBuilder = (ICaptureGraphBuilder2) DsBugWO.CreateDsInstance( ref clsid, ref riid );
// sampGrabber, ISampleGrabber to capture frames
comType=Type.GetTypeFromCLSID( Clsid.SampleGrabber, true );
if(comType==null)
throw new NotImplementedException (@"DirectShow SampleGrabber not installed/registered");
comObj=Activator.CreateInstance( comType );
sampGrabber = (ISampleGrabber) comObj; comObj = null;
// Link the CaptureGraphBuilder to the filter graph
hr = captureGraphBuilder.SetFiltergraph( graphBuilder );
//if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
// Begin set up of SampGrabber <<<<<<----------------------------------------------------
AMMediaType media = new AMMediaType();
media.majorType= MediaType.Video;
media.subType = MediaSubType.RGB24;
media.formatType = FormatType.VideoInfo;
hr = sampGrabber.SetMediaType( media );
//if( hr<0 ) Marshal.ThrowExceptionForHR( hr );
// Finish set up of SampGrabber <<<<<<----------------------------------------------------
// Add the graph to the Running Object Table so it can be
// viewed with GraphEdit
#if DEBUG
DsROT.AddGraphToRot( graphBuilder, out rotCookie );
#endif
// Get the video device and add it to the filter graph
if ( VideoDevice != null )
{
videoDeviceFilter = (IBaseFilter) Marshal.BindToMoniker( VideoDevice.MonikerString );
hr = graphBuilder.AddFilter( videoDeviceFilter, "Video Capture Device" );
//if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
// Add SampGrabber Filter <<<<<<----------------------------------------------------
mediaEvt = (IMediaEventEx) graphBuilder;
baseGrabFlt = (IBaseFilter) sampGrabber;
hr = graphBuilder.AddFilter( baseGrabFlt, "DS.NET Grabber" );
//if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
}
// Get the audio device and add it to the filter graph
if ( AudioDevice != null )
{
audioDeviceFilter = (IBaseFilter) Marshal.BindToMoniker( AudioDevice.MonikerString );
hr = graphBuilder.AddFilter( audioDeviceFilter, "Audio Capture Device" );
//if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
}
// Get the video compressor and add it to the filter graph
if ( VideoCompressor != null )
{
videoCompressorFilter = (IBaseFilter) Marshal.BindToMoniker( VideoCompressor.MonikerString );
hr = graphBuilder.AddFilter( videoCompressorFilter, "Video Compressor" );
//if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
}
// Get the audio compressor and add it to the filter graph
if ( AudioCompressor != null )
{
audioCompressorFilter = (IBaseFilter) Marshal.BindToMoniker( AudioCompressor.MonikerString );
hr = graphBuilder.AddFilter( audioCompressorFilter, "Audio Compressor" );
//if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
}
// Retrieve the stream control interface for the video device
// FindInterface will also add any required filters
// (WDM devices in particular may need additional
// upstream filters to function).
// Try looking for an interleaved media type
object o;
cat = PinCategory.Capture;
med = MediaType.Interleaved;
Guid iid = typeof(IAMStreamConfig).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o );
if ( hr != 0 )
{
// If not found, try looking for a video media type
med = MediaType.Video;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o );
if ( hr != 0 )
o = null;
}
videoStreamConfig = o as IAMStreamConfig;
// Retrieve the stream control interface for the audio device
o = null;
cat = PinCategory.Capture;
med = MediaType.Audio ;
iid = typeof(IAMStreamConfig).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, audioDeviceFilter, ref iid, out o );
if ( hr != 0 )
o = null;
audioStreamConfig = o as IAMStreamConfig;
// Retreive the media control interface (for starting/stopping graph)
mediaControl = (IMediaControl) graphBuilder;
// Reload any video crossbars
if ( videoSources != null ) videoSources.Dispose(); videoSources = null;
// Reload any audio crossbars
if ( audioSources != null ) audioSources.Dispose(); audioSources = null;
// Reload any property pages exposed by filters
if ( propertyPages != null ) propertyPages.Dispose(); propertyPages = null;
// Reload capabilities of video device
videoCaps = null;
// Reload capabilities of video device
audioCaps = null;
// Retrieve TV Tuner if available
o = null;
cat = PinCategory.Capture;
med = MediaType.Interleaved;
iid = typeof(IAMTVTuner).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o );
if ( hr != 0 )
{
med = MediaType.Video ;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o );
if ( hr != 0 )
o = null;
}
IAMTVTuner t = o as IAMTVTuner;
if ( t != null )
tuner = new Tuner( t );
/*
// ----------- VMR 9 -------------------
//## check out samples\inc\vmrutil.h :: RenderFileToVMR9
IBaseFilter vmr = null;
if ( ( VideoDevice != null ) && ( previewWindow != null ) )
{
vmr = (IBaseFilter) Activator.CreateInstance( Type.GetTypeFromCLSID( Clsid.VideoMixingRenderer9, true ) );
hr = graphBuilder.AddFilter( vmr, "VMR" );
if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
IVMRFilterConfig9 vmrFilterConfig = (IVMRFilterConfig9) vmr;
hr = vmrFilterConfig.SetRenderingMode( VMRMode9.Windowless );
if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
IVMRWindowlessControl9 vmrWindowsless = (IVMRWindowlessControl9) vmr;
hr = vmrWindowsless.SetVideoClippingWindow( previewWindow.Handle );
if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
}
//-------------------------------------------
// ---------- SmartTee ---------------------
IBaseFilter smartTeeFilter = (IBaseFilter) Activator.CreateInstance( Type.GetTypeFromCLSID( Clsid.SmartTee, true ) );
hr = graphBuilder.AddFilter( smartTeeFilter, "Video Smart Tee" );
if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
// Video -> SmartTee
cat = PinCategory.Capture;
med = MediaType.Video;
hr = captureGraphBuilder.RenderStream( ref cat, ref med, videoDeviceFilter, null, smartTeeFilter );
if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
// smarttee -> mux
cat = PinCategory.Capture;
med = MediaType.Video;
hr = captureGraphBuilder.RenderStream( ref cat, ref med, smartTeeFilter, null, muxFilter );
if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
// smarttee -> vmr
cat = PinCategory.Preview;
med = MediaType.Video;
hr = captureGraphBuilder.RenderStream( ref cat, ref med, smartTeeFilter, null, vmr );
if( hr < 0 ) Marshal.ThrowExceptionForHR( hr );
// -------------------------------------
*/
// Update the state now that we are done
graphState = GraphState.Created;
}
}
