private void GetControlInterface()
{
this.tuner = null;
this.crossbar = null;
object o;
int hr = this.captureGraphBuilder.FindInterface(null, null, this.videoCaptureFilter, typeof(IAMTVTuner).GUID, out o);
if (hr >= 0)
{
this.tuner = o as IAMTVTuner;
o = null;
hr = this.captureGraphBuilder.FindInterface(null, null, this.videoCaptureFilter, typeof(IAMCrossbar).GUID, out o);
if (hr >= 0)
{
this.crossbar = o as IBaseFilter;
o = null;
}
// Use the crossbar class to help us sort out all the possible video inputs
// The class needs to be given the capture filters ANALOGVIDEO input pin
IPin pinVideo = DsFindPin.ByCategory(this.videoCaptureFilter, PinCategory.AnalogVideoIn, 0);
if (pinVideo != null)
{
try
{
this.crossbarHelper = new CrossbarHelper(pinVideo);
}
catch {}
Marshal.ReleaseComObject(pinVideo);
}
hr = this.captureGraphBuilder.FindInterface(null, null, this.videoCaptureFilter, typeof(IAMTVAudio).GUID, out o);
if (hr >= 0)
{
this.amTVAudio = o as IAMTVAudio;
o = null;
}
}
}
protected override void Decompose()
{
if (this.graphBuilder != null)
{
int hr = 0;
OnGraphEnded();
// Decompose the graph
try { hr = (this.graphBuilder as IMediaControl).StopWhenReady(); }
catch { }
try { hr = (this.graphBuilder as IMediaControl).Stop(); }
catch { }
RemoveHandlers();
FilterGraphTools.RemoveAllFilters(this.graphBuilder);
if (this.crossbarHelper != null)
{
this.crossbarHelper.Dispose();
}
this.crossbarHelper = null;
if (this.tuner != null)
{
Marshal.ReleaseComObject(this.tuner);
}
this.tuner = null;
if (this.amTVAudio != null)
{
Marshal.ReleaseComObject(this.amTVAudio);
}
this.amTVAudio = null;
if (this.crossbar != null)
{
Marshal.ReleaseComObject(this.crossbar);
}
this.crossbar = null;
if (this.videoCaptureFilter != null)
{
Marshal.ReleaseComObject(this.videoCaptureFilter);
}
this.videoCaptureFilter = null;
if (this.audioCaptureFilter != null)
{
Marshal.ReleaseComObject(this.audioCaptureFilter);
}
this.audioCaptureFilter = null;
if (this.audioRenderer != null)
{
Marshal.ReleaseComObject(this.audioRenderer);
}
this.audioRenderer = null;
if (this.videoRenderer != null)
{
Marshal.ReleaseComObject(this.videoRenderer);
}
this.videoRenderer = null;
if (this.captureGraphBuilder != null)
{
Marshal.ReleaseComObject(this.captureGraphBuilder);
}
this.captureGraphBuilder = null;
if (useWPF)
{
WPFStop();
}
try { rot.Dispose(); }
catch { }
try { Marshal.ReleaseComObject(this.graphBuilder); this.graphBuilder = null; }
catch { }
}
}
private void GetControlInterface()
{
this.tuner = null;
this.crossbar = null;
object o;
int hr = this.captureGraphBuilder.FindInterface(null, null, this.videoCaptureFilter, typeof(IAMTVTuner).GUID, out o);
if (hr >= 0)
{
this.tuner = o as IAMTVTuner;
o = null;
hr = this.captureGraphBuilder.FindInterface(null, null, this.videoCaptureFilter, typeof(IAMCrossbar).GUID, out o);
if (hr >= 0)
{
this.crossbar = o as IBaseFilter;
o = null;
}
// Use the crossbar class to help us sort out all the possible video inputs
// The class needs to be given the capture filters ANALOGVIDEO input pin
IPin pinVideo = DsFindPin.ByCategory(this.videoCaptureFilter, PinCategory.AnalogVideoIn, 0);
if (pinVideo != null)
{
try
{
this.crossbarHelper = new CrossbarHelper(pinVideo);
}
catch{}
Marshal.ReleaseComObject(pinVideo);
}
hr = this.captureGraphBuilder.FindInterface(null, null, this.videoCaptureFilter, typeof(IAMTVAudio).GUID, out o);
if (hr >= 0)
{
this.amTVAudio = o as IAMTVAudio;
o = null;
}
}
}
protected override void Decompose()
{
if (this.graphBuilder != null)
{
int hr = 0;
OnGraphEnded();
// Decompose the graph
try { hr = (this.graphBuilder as IMediaControl).StopWhenReady(); }
catch { }
try { hr = (this.graphBuilder as IMediaControl).Stop(); }
catch { }
RemoveHandlers();
FilterGraphTools.RemoveAllFilters(this.graphBuilder);
if (this.crossbarHelper != null) this.crossbarHelper.Dispose(); this.crossbarHelper = null;
if (this.tuner != null) Marshal.ReleaseComObject(this.tuner); this.tuner = null;
if (this.amTVAudio != null) Marshal.ReleaseComObject(this.amTVAudio); this.amTVAudio = null;
if (this.crossbar != null) Marshal.ReleaseComObject(this.crossbar); this.crossbar = null;
if (this.videoCaptureFilter != null) Marshal.ReleaseComObject(this.videoCaptureFilter); this.videoCaptureFilter = null;
if (this.audioCaptureFilter != null) Marshal.ReleaseComObject(this.audioCaptureFilter); this.audioCaptureFilter = null;
if (this.audioRenderer != null) Marshal.ReleaseComObject(this.audioRenderer); this.audioRenderer = null;
if (this.videoRenderer != null) Marshal.ReleaseComObject(this.videoRenderer); this.videoRenderer = null;
if (this.captureGraphBuilder != null) Marshal.ReleaseComObject(this.captureGraphBuilder); this.captureGraphBuilder = null;
if (useWPF)
WPFStop();
try { rot.Dispose(); }
catch { }
try { Marshal.ReleaseComObject(this.graphBuilder); this.graphBuilder = null; }
catch { }
}
}
