public static CreateFilter ( string filterMoniker ) : object | ||
filterMoniker | string | Filter's moniker string. |
리턴 | object |
public bool GetCameraPropertyRange(CameraControlProperty property, out int minValue, out int maxValue, out int stepSize, out int defaultValue, out CameraControlFlags controlFlags) { bool flag = true; if (deviceMoniker == null || string.IsNullOrEmpty(deviceMoniker)) { throw new ArgumentException("Video source is not specified."); } lock (sync) { object obj = null; try { obj = FilterInfo.CreateFilter(deviceMoniker); } catch { throw new ApplicationException("Failed creating device object for moniker."); } if (!(obj is IAMCameraControl)) { throw new NotSupportedException("The video source does not support camera control."); } IAMCameraControl iAMCameraControl = (IAMCameraControl)obj; int range = iAMCameraControl.GetRange(property, out minValue, out maxValue, out stepSize, out defaultValue, out controlFlags); flag = (range >= 0); Marshal.ReleaseComObject(obj); return(flag); } }
public void DisplayPropertyPage(IntPtr parentWindow) { if (deviceMoniker == null || deviceMoniker == string.Empty) { throw new ArgumentException("Video source is not specified."); } lock (sync) { if (IsRunning) { parentWindowForPropertyPage = parentWindow; needToDisplayPropertyPage = true; } else { object obj = null; try { obj = FilterInfo.CreateFilter(deviceMoniker); } catch { throw new ApplicationException("Failed creating device object for moniker."); } if (!(obj is ISpecifyPropertyPages)) { throw new NotSupportedException("The video source does not support configuration property page."); } DisplayPropertyPage(parentWindow, obj); Marshal.ReleaseComObject(obj); } } }
/// <summary> /// Display property window for the video capture device providing its configuration /// capabilities. /// </summary> /// /// <param name="parentWindow">Handle of parent window.</param> /// /// <remarks><para><note>If you pass parent window's handle to this method, then the /// displayed property page will become modal window and none of the controls from the /// parent window will be accessible. In order to make it modeless it is required /// to pass <see cref="IntPtr.Zero"/> as parent window's handle. /// </note></para> /// </remarks> /// /// <exception cref="NotSupportedException">The video source does not support configuration property page.</exception> /// public void DisplayPropertyPage(IntPtr parentWindow) { // check source if ((deviceMoniker == null) || (deviceMoniker == string.Empty)) { throw new ArgumentException("Video source is not specified"); } lock (this) { if (IsRunning) { // pass the request to backgroud thread if video source is running parentWindowForPropertyPage = parentWindow; needToDisplayPropertyPage = true; return; } object tempSourceObject = null; // create source device's object try { tempSourceObject = FilterInfo.CreateFilter(deviceMoniker); } catch { throw new ApplicationException("Failed creating device object for moniker."); } if (!(tempSourceObject is ISpecifyPropertyPages)) { throw new NotSupportedException("The video source does not support configuration property page."); } // retrieve ISpecifyPropertyPages interface of the device ISpecifyPropertyPages pPropPages = (ISpecifyPropertyPages)tempSourceObject; // get property pages from the property bag CAUUID caGUID; pPropPages.GetPages(out caGUID); // get filter info FilterInfo filterInfo = new FilterInfo(deviceMoniker); // create and display the OlePropertyFrame form Win32.OleCreatePropertyFrame(parentWindow, 0, 0, filterInfo.Name, 1, ref tempSourceObject, caGUID.cElems, caGUID.pElems, 0, 0, IntPtr.Zero); // release COM objects Marshal.FreeCoTaskMem(caGUID.pElems); Marshal.ReleaseComObject(tempSourceObject); } }
/// <summary> /// Gets the range and default value of a specified camera property. /// </summary> /// /// <param name="property">Specifies the property to query.</param> /// <param name="minValue">Receives the minimum value of the property.</param> /// <param name="maxValue">Receives the maximum value of the property.</param> /// <param name="stepSize">Receives the step size for the property.</param> /// <param name="defaultValue">Receives the default value of the property.</param> /// <param name="controlFlags">Receives a member of the <see cref="CameraControlFlags"/> enumeration, indicating whether the property is controlled automatically or manually.</param> /// /// <returns>Returns true on success or false otherwise.</returns> /// /// <exception cref="ArgumentException">Video source is not specified - device moniker is not set.</exception> /// <exception cref="ApplicationException">Failed creating device object for moniker.</exception> /// <exception cref="NotSupportedException">The video source does not support camera control.</exception> /// public bool GetVideoPropertyRange(VideoProcAmpProperty property, out int minValue, out int maxValue, out int stepSize, out int defaultValue, out VideoProcAmpFlags controlFlags) { bool ret = true; // check if source was set if ((deviceMoniker == null) || (string.IsNullOrEmpty(deviceMoniker))) { throw new ArgumentException("Video source is not specified."); } lock (sync) { object tempSourceObject = null; // create source device's object try { tempSourceObject = FilterInfo.CreateFilter(deviceMoniker); } catch { throw new ApplicationException("Failed creating device object for moniker."); } if (!(tempSourceObject is IAMVideoProcAmp)) { throw new NotSupportedException("The video source does not support camera control."); } IAMVideoProcAmp pCamControl = (IAMVideoProcAmp)tempSourceObject; int hr = pCamControl.GetRange(property, out minValue, out maxValue, out stepSize, out defaultValue, out controlFlags); ret = (hr >= 0); Marshal.ReleaseComObject(tempSourceObject); } return(ret); }
private void WorkerThread(bool runGraph) { ReasonToFinishPlaying reason = ReasonToFinishPlaying.StoppedByUser; bool flag = false; Grabber grabber = new Grabber(this, snapshotMode: false); Grabber grabber2 = new Grabber(this, snapshotMode: true); object obj = null; object obj2 = null; object obj3 = null; object obj4 = null; object retInterface = null; ICaptureGraphBuilder2 captureGraphBuilder = null; IFilterGraph2 filterGraph = null; IBaseFilter baseFilter = null; IBaseFilter baseFilter2 = null; IBaseFilter baseFilter3 = null; ISampleGrabber sampleGrabber = null; ISampleGrabber sampleGrabber2 = null; IMediaControl mediaControl = null; IAMVideoControl iAMVideoControl = null; IMediaEventEx mediaEventEx = null; IPin pin = null; IAMCrossbar iAMCrossbar = null; try { Type typeFromCLSID = Type.GetTypeFromCLSID(Clsid.CaptureGraphBuilder2); if (typeFromCLSID == null) { throw new ApplicationException("Failed creating capture graph builder"); } obj = Activator.CreateInstance(typeFromCLSID); captureGraphBuilder = (ICaptureGraphBuilder2)obj; typeFromCLSID = Type.GetTypeFromCLSID(Clsid.FilterGraph); if (typeFromCLSID == null) { throw new ApplicationException("Failed creating filter graph"); } obj2 = Activator.CreateInstance(typeFromCLSID); filterGraph = (IFilterGraph2)obj2; captureGraphBuilder.SetFiltergraph((IGraphBuilder)filterGraph); sourceObject = FilterInfo.CreateFilter(deviceMoniker); if (sourceObject == null) { throw new ApplicationException("Failed creating device object for moniker"); } baseFilter = (IBaseFilter)sourceObject; try { iAMVideoControl = (IAMVideoControl)sourceObject; } catch { } typeFromCLSID = Type.GetTypeFromCLSID(Clsid.SampleGrabber); if (typeFromCLSID == null) { throw new ApplicationException("Failed creating sample grabber"); } obj3 = Activator.CreateInstance(typeFromCLSID); sampleGrabber = (ISampleGrabber)obj3; baseFilter2 = (IBaseFilter)obj3; obj4 = Activator.CreateInstance(typeFromCLSID); sampleGrabber2 = (ISampleGrabber)obj4; baseFilter3 = (IBaseFilter)obj4; filterGraph.AddFilter(baseFilter, "source"); filterGraph.AddFilter(baseFilter2, "grabber_video"); filterGraph.AddFilter(baseFilter3, "grabber_snapshot"); AMMediaType aMMediaType = new AMMediaType(); aMMediaType.MajorType = MediaType.Video; aMMediaType.SubType = MediaSubType.RGB24; sampleGrabber.SetMediaType(aMMediaType); sampleGrabber2.SetMediaType(aMMediaType); captureGraphBuilder.FindInterface(FindDirection.UpstreamOnly, Guid.Empty, baseFilter, typeof(IAMCrossbar).GUID, out retInterface); if (retInterface != null) { iAMCrossbar = (IAMCrossbar)retInterface; } isCrossbarAvailable = (iAMCrossbar != null); crossbarVideoInputs = ColletCrossbarVideoInputs(iAMCrossbar); if (iAMVideoControl != null) { captureGraphBuilder.FindPin(sourceObject, PinDirection.Output, PinCategory.StillImage, MediaType.Video, unconnected: false, 0, out pin); if (pin != null) { iAMVideoControl.GetCaps(pin, out VideoControlFlags flags); flag = ((flags & VideoControlFlags.ExternalTriggerEnable) != 0); } } sampleGrabber.SetBufferSamples(bufferThem: false); sampleGrabber.SetOneShot(oneShot: false); sampleGrabber.SetCallback(grabber, 1); sampleGrabber2.SetBufferSamples(bufferThem: true); sampleGrabber2.SetOneShot(oneShot: false); sampleGrabber2.SetCallback(grabber2, 1); GetPinCapabilitiesAndConfigureSizeAndRate(captureGraphBuilder, baseFilter, PinCategory.Capture, videoResolution, ref videoCapabilities); if (flag) { GetPinCapabilitiesAndConfigureSizeAndRate(captureGraphBuilder, baseFilter, PinCategory.StillImage, snapshotResolution, ref snapshotCapabilities); } else { snapshotCapabilities = new VideoCapabilities[0]; } lock (cacheVideoCapabilities) { if (videoCapabilities != null && !cacheVideoCapabilities.ContainsKey(deviceMoniker)) { cacheVideoCapabilities.Add(deviceMoniker, videoCapabilities); } } lock (cacheSnapshotCapabilities) { if (snapshotCapabilities != null && !cacheSnapshotCapabilities.ContainsKey(deviceMoniker)) { cacheSnapshotCapabilities.Add(deviceMoniker, snapshotCapabilities); } } if (runGraph) { captureGraphBuilder.RenderStream(PinCategory.Capture, MediaType.Video, baseFilter, null, baseFilter2); if (sampleGrabber.GetConnectedMediaType(aMMediaType) == 0) { VideoInfoHeader videoInfoHeader = (VideoInfoHeader)Marshal.PtrToStructure(aMMediaType.FormatPtr, typeof(VideoInfoHeader)); grabber.Width = videoInfoHeader.BmiHeader.Width; grabber.Height = videoInfoHeader.BmiHeader.Height; aMMediaType.Dispose(); } if (flag && provideSnapshots) { captureGraphBuilder.RenderStream(PinCategory.StillImage, MediaType.Video, baseFilter, null, baseFilter3); if (sampleGrabber2.GetConnectedMediaType(aMMediaType) == 0) { VideoInfoHeader videoInfoHeader2 = (VideoInfoHeader)Marshal.PtrToStructure(aMMediaType.FormatPtr, typeof(VideoInfoHeader)); grabber2.Width = videoInfoHeader2.BmiHeader.Width; grabber2.Height = videoInfoHeader2.BmiHeader.Height; aMMediaType.Dispose(); } } mediaControl = (IMediaControl)obj2; mediaEventEx = (IMediaEventEx)obj2; mediaControl.Run(); if (flag && provideSnapshots) { startTime = DateTime.Now; iAMVideoControl.SetMode(pin, VideoControlFlags.ExternalTriggerEnable); } do { if (mediaEventEx != null && mediaEventEx.GetEvent(out DsEvCode lEventCode, out IntPtr lParam, out IntPtr lParam2, 0) >= 0) { mediaEventEx.FreeEventParams(lEventCode, lParam, lParam2); if (lEventCode == DsEvCode.DeviceLost) { reason = ReasonToFinishPlaying.DeviceLost; break; } } if (needToSetVideoInput) { needToSetVideoInput = false; if (isCrossbarAvailable.Value) { SetCurrentCrossbarInput(iAMCrossbar, crossbarVideoInput); crossbarVideoInput = GetCurrentCrossbarInput(iAMCrossbar); } } if (needToSimulateTrigger) { needToSimulateTrigger = false; if (flag && provideSnapshots) { iAMVideoControl.SetMode(pin, VideoControlFlags.Trigger); } } if (needToDisplayPropertyPage) { needToDisplayPropertyPage = false; DisplayPropertyPage(parentWindowForPropertyPage, sourceObject); if (iAMCrossbar != null) { crossbarVideoInput = GetCurrentCrossbarInput(iAMCrossbar); } } if (needToDisplayCrossBarPropertyPage) { needToDisplayCrossBarPropertyPage = false; if (iAMCrossbar != null) { DisplayPropertyPage(parentWindowForPropertyPage, iAMCrossbar); crossbarVideoInput = GetCurrentCrossbarInput(iAMCrossbar); } } }while (!stopEvent.WaitOne(100, exitContext: false)); mediaControl.Stop(); } } catch (Exception ex) { if (this.VideoSourceError != null) { this.VideoSourceError(this, new VideoSourceErrorEventArgs(ex.Message)); } } finally { captureGraphBuilder = null; filterGraph = null; baseFilter = null; mediaControl = null; iAMVideoControl = null; mediaEventEx = null; pin = null; iAMCrossbar = null; baseFilter2 = null; baseFilter3 = null; sampleGrabber = null; sampleGrabber2 = null; if (obj2 != null) { Marshal.ReleaseComObject(obj2); obj2 = null; } if (sourceObject != null) { Marshal.ReleaseComObject(sourceObject); sourceObject = null; } if (obj3 != null) { Marshal.ReleaseComObject(obj3); obj3 = null; } if (obj4 != null) { Marshal.ReleaseComObject(obj4); obj4 = null; } if (obj != null) { Marshal.ReleaseComObject(obj); obj = null; } if (retInterface != null) { Marshal.ReleaseComObject(retInterface); retInterface = null; } } if (this.PlayingFinished != null) { this.PlayingFinished(this, reason); } }
private void WorkerThread(bool runGraph) { // grabber Grabber grabber = new Grabber(this); // objects object captureGraphObject = null; object graphObject = null; object grabberObject = null; // interfaces ICaptureGraphBuilder2 captureGraph = null; IFilterGraph2 graph = null; IBaseFilter sourceBase = null; IBaseFilter grabberBase = null; ISampleGrabber sampleGrabber = null; IMediaControl mediaControl = null; try { // get type of capture graph builder Type type = Type.GetTypeFromCLSID(Clsid.CaptureGraphBuilder2); if (type == null) { throw new ApplicationException("Failed creating capture graph builder"); } // create capture graph builder captureGraphObject = Activator.CreateInstance(type); captureGraph = (ICaptureGraphBuilder2)captureGraphObject; // get type of filter graph type = Type.GetTypeFromCLSID(Clsid.FilterGraph); if (type == null) { throw new ApplicationException("Failed creating filter graph"); } // create filter graph graphObject = Activator.CreateInstance(type); graph = (IFilterGraph2)graphObject; // set filter graph to the capture graph builder captureGraph.SetFiltergraph((IGraphBuilder)graph); // create source device's object sourceObject = FilterInfo.CreateFilter(deviceMoniker); if (sourceObject == null) { throw new ApplicationException("Failed creating device object for moniker"); } // get base filter interface of source device sourceBase = (IBaseFilter)sourceObject; // get type of sample grabber type = Type.GetTypeFromCLSID(Clsid.SampleGrabber); if (type == null) { throw new ApplicationException("Failed creating sample grabber"); } // create sample grabber grabberObject = Activator.CreateInstance(type); sampleGrabber = (ISampleGrabber)grabberObject; grabberBase = (IBaseFilter)grabberObject; // add source and grabber filters to graph graph.AddFilter(sourceBase, "source"); graph.AddFilter(grabberBase, "grabber"); // set media type AMMediaType mediaType = new AMMediaType( ); mediaType.MajorType = MediaType.Video; mediaType.SubType = MediaSubType.RGB24; sampleGrabber.SetMediaType(mediaType); // configure sample grabber sampleGrabber.SetBufferSamples(false); sampleGrabber.SetOneShot(false); sampleGrabber.SetCallback(grabber, 1); // check if it is required to change capture settings if ((desiredFrameRate != 0) || ((desiredFrameSize.Width != 0) && (desiredFrameSize.Height != 0))) { object streamConfigObject; // get stream configuration object captureGraph.FindInterface(PinCategory.Capture, MediaType.Video, sourceBase, typeof(IAMStreamConfig).GUID, out streamConfigObject); if (streamConfigObject != null) { IAMStreamConfig streamConfig = (IAMStreamConfig)streamConfigObject; if (videoCapabilities == null) { // get all video capabilities try { videoCapabilities = AForge.Video.DirectShow.VideoCapabilities.FromStreamConfig(streamConfig); } catch { } } // get current format streamConfig.GetFormat(out mediaType); VideoInfoHeader infoHeader = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader)); // change frame size if required if ((desiredFrameSize.Width != 0) && (desiredFrameSize.Height != 0)) { infoHeader.BmiHeader.Width = desiredFrameSize.Width; infoHeader.BmiHeader.Height = desiredFrameSize.Height; } // change frame rate if required if (desiredFrameRate != 0) { infoHeader.AverageTimePerFrame = 10000000 / desiredFrameRate; } // copy the media structure back Marshal.StructureToPtr(infoHeader, mediaType.FormatPtr, false); // set the new format streamConfig.SetFormat(mediaType); mediaType.Dispose( ); } } else { if (videoCapabilities == null) { object streamConfigObject; // get stream configuration object captureGraph.FindInterface(PinCategory.Capture, MediaType.Video, sourceBase, typeof(IAMStreamConfig).GUID, out streamConfigObject); if (streamConfigObject != null) { IAMStreamConfig streamConfig = (IAMStreamConfig)streamConfigObject; // get all video capabilities try { videoCapabilities = AForge.Video.DirectShow.VideoCapabilities.FromStreamConfig(streamConfig); } catch { } } } } if (runGraph) { // render source device on sample grabber captureGraph.RenderStream(PinCategory.Capture, MediaType.Video, sourceBase, null, grabberBase); // get media type if (sampleGrabber.GetConnectedMediaType(mediaType) == 0) { VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader)); grabber.Width = vih.BmiHeader.Width; grabber.Height = vih.BmiHeader.Height; mediaType.Dispose( ); } // get media control mediaControl = (IMediaControl)graphObject; // run mediaControl.Run( ); while (!stopEvent.WaitOne(0, true)) { Thread.Sleep(100); if (needToDisplayPropertyPage) { needToDisplayPropertyPage = false; try { // retrieve ISpecifyPropertyPages interface of the device ISpecifyPropertyPages pPropPages = (ISpecifyPropertyPages)sourceObject; // get property pages from the property bag CAUUID caGUID; pPropPages.GetPages(out caGUID); // get filter info FilterInfo filterInfo = new FilterInfo(deviceMoniker); // create and display the OlePropertyFrame Win32.OleCreatePropertyFrame(parentWindowForPropertyPage, 0, 0, filterInfo.Name, 1, ref sourceObject, caGUID.cElems, caGUID.pElems, 0, 0, IntPtr.Zero); // release COM objects Marshal.FreeCoTaskMem(caGUID.pElems); } catch { } } } mediaControl.StopWhenReady( ); } } catch (Exception exception) { // provide information to clients if (VideoSourceError != null) { VideoSourceError(this, new VideoSourceErrorEventArgs(exception.Message)); } } finally { // release all objects captureGraph = null; graph = null; sourceBase = null; grabberBase = null; sampleGrabber = null; mediaControl = null; if (graphObject != null) { Marshal.ReleaseComObject(graphObject); graphObject = null; } if (sourceObject != null) { Marshal.ReleaseComObject(sourceObject); sourceObject = null; } if (grabberObject != null) { Marshal.ReleaseComObject(grabberObject); grabberObject = null; } if (captureGraphObject != null) { Marshal.ReleaseComObject(captureGraphObject); captureGraphObject = null; } } if (PlayingFinished != null) { PlayingFinished(this, ReasonToFinishPlaying.StoppedByUser); } }
// Token: 0x0600003F RID: 63 RVA: 0x00002D24 File Offset: 0x00000F24 private void WorkerThread(bool runGraph) { ReasonToFinishPlaying reason = ReasonToFinishPlaying.StoppedByUser; bool flag = false; VideoCaptureDevice.Grabber grabber = new VideoCaptureDevice.Grabber(this, false); VideoCaptureDevice.Grabber grabber2 = new VideoCaptureDevice.Grabber(this, true); object obj = null; object obj2 = null; object obj3 = null; object obj4 = null; object obj5 = null; ICaptureGraphBuilder2 captureGraphBuilder = null; IFilterGraph2 filterGraph = null; IBaseFilter baseFilter = null; IBaseFilter baseFilter2 = null; IBaseFilter baseFilter3 = null; ISampleGrabber sampleGrabber = null; ISampleGrabber sampleGrabber2 = null; IAMVideoControl iamvideoControl = null; IPin pin = null; IAMCrossbar iamcrossbar = null; try { Type typeFromCLSID = Type.GetTypeFromCLSID(Clsid.CaptureGraphBuilder2); if (typeFromCLSID == null) { throw new ApplicationException("Failed creating capture graph builder"); } obj = Activator.CreateInstance(typeFromCLSID); captureGraphBuilder = (ICaptureGraphBuilder2)obj; Type typeFromCLSID2 = Type.GetTypeFromCLSID(Clsid.FilterGraph); if (typeFromCLSID2 == null) { throw new ApplicationException("Failed creating filter graph"); } obj2 = Activator.CreateInstance(typeFromCLSID2); filterGraph = (IFilterGraph2)obj2; captureGraphBuilder.SetFiltergraph((IGraphBuilder)filterGraph); this.sourceObject1 = FilterInfo.CreateFilter(this.deviceMoniker1); if (this.sourceObject1 == null) { throw new ApplicationException("Failed creating device object for moniker"); } baseFilter = (IBaseFilter)this.sourceObject1; try { iamvideoControl = (IAMVideoControl)this.sourceObject1; } catch { } Type typeFromCLSID3 = Type.GetTypeFromCLSID(Clsid.SampleGrabber); if (typeFromCLSID3 == null) { throw new ApplicationException("Failed creating sample grabber"); } obj3 = Activator.CreateInstance(typeFromCLSID3); sampleGrabber = (ISampleGrabber)obj3; baseFilter2 = (IBaseFilter)obj3; obj4 = Activator.CreateInstance(typeFromCLSID3); sampleGrabber2 = (ISampleGrabber)obj4; baseFilter3 = (IBaseFilter)obj4; filterGraph.AddFilter(baseFilter, "source"); filterGraph.AddFilter(baseFilter2, "grabber_video"); filterGraph.AddFilter(baseFilter3, "grabber_snapshot"); AMMediaType ammediaType = new AMMediaType(); ammediaType.MajorType = MediaType.Video1; ammediaType.SubType = MediaSubType.RGB24; sampleGrabber.SetMediaType(ammediaType); sampleGrabber2.SetMediaType(ammediaType); captureGraphBuilder.FindInterface(FindDirection.UpstreamOnly, Guid.Empty, baseFilter, typeof(IAMCrossbar).GUID, out obj5); if (obj5 != null) { iamcrossbar = (IAMCrossbar)obj5; } this.isCrossbarAvailable1 = new bool?(iamcrossbar != null); this.crossbarVideoInputs1 = this.ColletCrossbarVideoInputs(iamcrossbar); if (iamvideoControl != null) { captureGraphBuilder.FindPin(this.sourceObject1, PinDirection.Output, PinCategory.StillImage, MediaType.Video1, false, 0, out pin); if (pin != null) { VideoControlFlags videoControlFlags; iamvideoControl.GetCaps(pin, out videoControlFlags); flag = ((videoControlFlags & VideoControlFlags.ExternalTriggerEnable) > (VideoControlFlags)0); } } sampleGrabber.SetBufferSamples(false); sampleGrabber.SetOneShot(false); sampleGrabber.SetCallback(grabber, 1); sampleGrabber2.SetBufferSamples(true); sampleGrabber2.SetOneShot(false); sampleGrabber2.SetCallback(grabber2, 1); this.GetPinCapabilitiesAndConfigureSizeAndRate(captureGraphBuilder, baseFilter, PinCategory.Capture, this.videoResolution1, ref this.videoCapabilities1); if (flag) { this.GetPinCapabilitiesAndConfigureSizeAndRate(captureGraphBuilder, baseFilter, PinCategory.StillImage, this.snapshotResolution1, ref this.snapshotCapabilities1); } else { this.snapshotCapabilities1 = new VideoCapabilities[0]; } Dictionary <string, VideoCapabilities[]> obj6 = VideoCaptureDevice.cacheVideoCapabilities1; lock (obj6) { if (this.videoCapabilities1 != null && !VideoCaptureDevice.cacheVideoCapabilities1.ContainsKey(this.deviceMoniker1)) { VideoCaptureDevice.cacheVideoCapabilities1.Add(this.deviceMoniker1, this.videoCapabilities1); } } obj6 = VideoCaptureDevice.cacheSnapshotCapabilities1; lock (obj6) { if (this.snapshotCapabilities1 != null && !VideoCaptureDevice.cacheSnapshotCapabilities1.ContainsKey(this.deviceMoniker1)) { VideoCaptureDevice.cacheSnapshotCapabilities1.Add(this.deviceMoniker1, this.snapshotCapabilities1); } } if (runGraph) { captureGraphBuilder.RenderStream(PinCategory.Capture, MediaType.Video1, baseFilter, null, baseFilter2); if (sampleGrabber.GetConnectedMediaType(ammediaType) == 0) { VideoInfoHeader videoInfoHeader = (VideoInfoHeader)Marshal.PtrToStructure(ammediaType.FormatPtr, typeof(VideoInfoHeader)); grabber.Width = videoInfoHeader.BmiHeader.Width; grabber.Height = videoInfoHeader.BmiHeader.Height; ammediaType.Dispose(); } if (flag && this.provideSnapshots1) { captureGraphBuilder.RenderStream(PinCategory.StillImage, MediaType.Video1, baseFilter, null, baseFilter3); if (sampleGrabber2.GetConnectedMediaType(ammediaType) == 0) { VideoInfoHeader videoInfoHeader2 = (VideoInfoHeader)Marshal.PtrToStructure(ammediaType.FormatPtr, typeof(VideoInfoHeader)); grabber2.Width = videoInfoHeader2.BmiHeader.Width; grabber2.Height = videoInfoHeader2.BmiHeader.Height; ammediaType.Dispose(); } } IMediaControl mediaControl = (IMediaControl)obj2; IMediaEventEx mediaEventEx = (IMediaEventEx)obj2; mediaControl.Run(); if (flag && this.provideSnapshots1) { this.startTime1 = DateTime.Now; iamvideoControl.SetMode(pin, VideoControlFlags.ExternalTriggerEnable); } for (;;) { DsEvCode dsEvCode; IntPtr lParam; IntPtr lParam2; if (mediaEventEx != null && mediaEventEx.GetEvent(out dsEvCode, out lParam, out lParam2, 0) >= 0) { mediaEventEx.FreeEventParams(dsEvCode, lParam, lParam2); if (dsEvCode == DsEvCode.DeviceLost) { break; } } if (this.needToSetVideoInput1) { this.needToSetVideoInput1 = false; if (this.isCrossbarAvailable1.Value) { this.SetCurrentCrossbarInput(iamcrossbar, this.crossbarVideoInput1); this.crossbarVideoInput1 = this.GetCurrentCrossbarInput(iamcrossbar); } } if (this.needToSimulateTrigger1) { this.needToSimulateTrigger1 = false; if (flag && this.provideSnapshots1) { iamvideoControl.SetMode(pin, VideoControlFlags.Trigger); } } if (this.needToDisplayPropertyPage1) { this.needToDisplayPropertyPage1 = false; this.DisplayPropertyPage(this.parentWindowForPropertyPage1, this.sourceObject1); if (iamcrossbar != null) { this.crossbarVideoInput1 = this.GetCurrentCrossbarInput(iamcrossbar); } } if (this.needToDisplayCrossBarPropertyPage1) { this.needToDisplayCrossBarPropertyPage1 = false; if (iamcrossbar != null) { this.DisplayPropertyPage(this.parentWindowForPropertyPage1, iamcrossbar); this.crossbarVideoInput1 = this.GetCurrentCrossbarInput(iamcrossbar); } } if (this.stopEvent1.WaitOne(100, false)) { goto IL_54E; } } reason = ReasonToFinishPlaying.DeviceLost; IL_54E: mediaControl.Stop1(); } } catch (Exception ex) { if (this.VideoSourceError != null) { this.VideoSourceError(this, new VideoSourceErrorEventArgs(ex.Message)); } } finally { captureGraphBuilder = null; filterGraph = null; baseFilter = null; iamvideoControl = null; pin = null; iamcrossbar = null; baseFilter2 = null; baseFilter3 = null; sampleGrabber = null; sampleGrabber2 = null; if (obj2 != null) { Marshal.ReleaseComObject(obj2); obj2 = null; } if (this.sourceObject1 != null) { Marshal.ReleaseComObject(this.sourceObject1); this.sourceObject1 = null; } if (obj3 != null) { Marshal.ReleaseComObject(obj3); obj3 = null; } if (obj4 != null) { Marshal.ReleaseComObject(obj4); obj4 = null; } if (obj != null) { Marshal.ReleaseComObject(obj); obj = null; } if (obj5 != null) { Marshal.ReleaseComObject(obj5); obj5 = null; } } if (this.PlayingFinished != null) { this.PlayingFinished(this, reason); } }