private void Configure()
{
// In order to lock a profile, you have to have at least one stream
// connected to the sink. I connect a video thru the DVVideoEnc into
// the StreamBufferSink.
int hr;
IBaseFilter pFilter;
IBaseFilter pRender = (IBaseFilter) new VideoRendererDefault();
ICaptureGraphBuilder2 icgb = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
m_FilterGraph = (IFilterGraph2) new FilterGraph();
DsROTEntry ds = new DsROTEntry(m_FilterGraph);
hr = icgb.SetFiltergraph(m_FilterGraph);
DsError.ThrowExceptionForHR(hr);
DsDevice [] devs = DsDevice.GetDevicesOfCat(FilterCategory.VideoInputDevice);
hr = m_FilterGraph.AddSourceFilterForMoniker(devs[0].Mon, null, devs[0].Name, out pFilter);
DsError.ThrowExceptionForHR(hr);
hr = m_FilterGraph.AddFilter(pRender, "renderererer");
DsError.ThrowExceptionForHR(hr);
hr = icgb.RenderStream(null, null, pFilter, null, pRender);
DsError.ThrowExceptionForHR(hr);
m_pin = DsFindPin.ByDirection(pRender, PinDirection.Input, 0);
m_igs = (IAMGraphStreams)m_FilterGraph;
Marshal.ReleaseComObject(pFilter);
Marshal.ReleaseComObject(icgb);
Marshal.ReleaseComObject(pRender);
}
/*
* // This version of FindCaptureDevice is provide for education only.
* // A second version using the DsDevice helper class is define later.
* public IBaseFilter FindCaptureDevice()
* {
* int hr = 0;
#if USING_NET11
* UCOMIEnumMoniker classEnum = null;
* UCOMIMoniker[] moniker = new UCOMIMoniker[1];
#else
* IEnumMoniker classEnum = null;
* IMoniker[] moniker = new IMoniker[1];
#endif
* object source = null;
*
* // Create the system device enumerator
* ICreateDevEnum devEnum = (ICreateDevEnum)new CreateDevEnum();
*
* // Create an enumerator for the video capture devices
* hr = devEnum.CreateClassEnumerator( FilterCategory.VideoInputDevice, out classEnum, 0 );
* DsError.ThrowExceptionForHR( hr );
*
* // The device enumerator is no more needed
* Marshal.ReleaseComObject( devEnum );
*
* // If there are no enumerators for the requested type, then
* // CreateClassEnumerator will succeed, but classEnum will be NULL.
* if( classEnum == null )
* {
* throw new ApplicationException( "No video capture device was detected.\r\n\r\n" +
* "This sample requires a video capture device, such as a USB WebCam,\r\n" +
* "to be installed and working properly. The sample will now close." );
* }
*
* // Use the first video capture device on the device list.
* // Note that if the Next() call succeeds but there are no monikers,
* // it will return 1 (S_FALSE) (which is not a failure). Therefore, we
* // check that the return code is 0 (S_OK).
#if USING_NET11
* int i;
* if (classEnum.Next (moniker.Length, moniker, IntPtr.Zero) == 0)
#else
* while( classEnum.Next( moniker.Length, moniker, IntPtr.Zero ) == 0 )
#endif
* {
* // Bind Moniker to a filter object
* Guid iid = typeof( IBaseFilter ).GUID;
* moniker[0].BindToObject( null, null, ref iid, out source );
* }
* //else
* //{
* // throw new ApplicationException( "Unable to access video capture device!" );
* //}
*
* // Release COM objects
* Marshal.ReleaseComObject( moniker[0] );
* Marshal.ReleaseComObject( classEnum );
*
* // An exception is thrown if cast fail
* return (IBaseFilter)source;
* }
*/
// Uncomment this version of FindCaptureDevice to use the DsDevice helper class
// (and comment the first version of course)
public void GetInterfaces()
{
int hr = 0;
// An exception is thrown if cast fail
this.graphBuilder = (IGraphBuilder) new FilterGraph();
this.captureGraphBuilder = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
this.mediaControl = (IMediaControl)this.graphBuilder;
this.videoWindow = (IVideoWindow)this.graphBuilder;
this.mediaEventEx = (IMediaEventEx)this.graphBuilder;
this.graph_streams = (IAMGraphStreams)this.graphBuilder;
this.graph_filter = (IMediaFilter)this.graphBuilder;
hr = this.mediaEventEx.SetNotifyWindow(this.Handle, WM_GRAPHNOTIFY, IntPtr.Zero);
DsError.ThrowExceptionForHR(hr);
}
