private void SetResolution(IAMStreamConfig streamConfig, VideoCapabilities resolution)
{
if (!(resolution == null))
{
int count = 0;
int size = 0;
AMMediaType mediaType = null;
VideoStreamConfigCaps streamConfigCaps = new VideoStreamConfigCaps();
streamConfig.GetNumberOfCapabilities(out count, out size);
for (int i = 0; i < count; i++)
{
try
{
VideoCapabilities b = new VideoCapabilities(streamConfig, i);
if (resolution == b && streamConfig.GetStreamCaps(i, out mediaType, streamConfigCaps) == 0)
{
break;
}
}
catch
{
}
}
if (mediaType != null)
{
streamConfig.SetFormat(mediaType);
mediaType.Dispose();
}
}
}
// Retrieve capabilities of a video device
internal VideoCapabilities(IAMStreamConfig videoStreamConfig, int index)
{
AMMediaType mediaType = null;
VideoStreamConfigCaps caps = new VideoStreamConfigCaps( );
try
{
// retrieve capabilities struct at the specified index
int hr = videoStreamConfig.GetStreamCaps(index, out mediaType, caps);
if (hr != 0)
{
Marshal.ThrowExceptionForHR(hr);
}
// extract info
FrameSize = caps.InputSize;
MaxFrameRate = (int)(10000000 / caps.MinFrameInterval);
}
finally
{
if (mediaType != null)
{
mediaType.Dispose( );
}
}
}
// Token: 0x06000040 RID: 64 RVA: 0x000033D0 File Offset: 0x000015D0
private void SetResolution(IAMStreamConfig streamConfig, VideoCapabilities resolution)
{
if (resolution == null)
{
return;
}
int num = 0;
int num2 = 0;
AMMediaType ammediaType = null;
VideoStreamConfigCaps streamConfigCaps = new VideoStreamConfigCaps();
streamConfig.GetNumberOfCapabilities(out num, out num2);
for (int i = 0; i < num; i++)
{
try
{
VideoCapabilities b = new VideoCapabilities(streamConfig, i);
if (resolution == b && streamConfig.GetStreamCaps(i, out ammediaType, streamConfigCaps) == 0)
{
break;
}
}
catch
{
}
}
if (ammediaType != null)
{
streamConfig.SetFormat(ammediaType);
ammediaType.Dispose();
}
}
// Set frame's size and rate for the specified stream configuration
private void SetFrameSizeAndRate(IAMStreamConfig streamConfig, Size size, int frameRate)
{
bool sizeSet = false;
AMMediaType mediaType;
// get current format
streamConfig.GetFormat(out mediaType);
// change frame size if required
if ((size.Width != 0) && (size.Height != 0))
{
// iterate through device's capabilities to find mediaType for desired resolution
int capabilitiesCount = 0, capabilitySize = 0;
AMMediaType newMediaType = null;
VideoStreamConfigCaps caps = new VideoStreamConfigCaps();
streamConfig.GetNumberOfCapabilities(out capabilitiesCount, out capabilitySize);
for (int i = 0; i < capabilitiesCount; i++)
{
if (streamConfig.GetStreamCaps(i, out newMediaType, caps) == 0)
{
if (caps.InputSize == size)
{
mediaType.Dispose();
mediaType = newMediaType;
sizeSet = true;
break;
}
else
{
newMediaType.Dispose();
}
}
}
}
VideoInfoHeader infoHeader = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
// try changing size manually if failed finding mediaType before
if ((size.Width != 0) && (size.Height != 0) && (!sizeSet))
{
infoHeader.BmiHeader.Width = size.Width;
infoHeader.BmiHeader.Height = size.Height;
}
// change frame rate if required
if (frameRate != 0)
{
infoHeader.AverageTimePerFrame = 10000000 / frameRate;
}
// copy the media structure back
Marshal.StructureToPtr(infoHeader, mediaType.FormatPtr, false);
// set the new format
streamConfig.SetFormat(mediaType);
mediaType.Dispose();
}
// Retrieve capabilities of a video device
internal VideoCapabilities(IAMStreamConfig videoStreamConfig, int index)
{
AMMediaType mediaType = null;
VideoStreamConfigCaps caps = new VideoStreamConfigCaps( );
try
{
// retrieve capabilities struct at the specified index
int hr = videoStreamConfig.GetStreamCaps(index, out mediaType, caps);
if (hr != 0)
{
Marshal.ThrowExceptionForHR(hr);
}
if (mediaType.FormatType == FormatType.VideoInfo)
{
VideoInfoHeader videoInfo = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
MediaType = GUID.GetNickname(mediaType.SubType);
FrameSize = new Size(videoInfo.BmiHeader.Width, videoInfo.BmiHeader.Height);
BitCount = videoInfo.BmiHeader.BitCount;
AverageFrameRate = (int)(10000000 / videoInfo.AverageTimePerFrame);
MaximumFrameRate = (int)(10000000 / caps.MinFrameInterval);
MinimumFrameRate = (int)(10000000 / caps.MaxFrameInterval);
}
else if (mediaType.FormatType == FormatType.VideoInfo2)
{
VideoInfoHeader2 videoInfo = (VideoInfoHeader2)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader2));
MediaType = GUID.GetNickname(mediaType.SubType);
FrameSize = new Size(videoInfo.BmiHeader.Width, videoInfo.BmiHeader.Height);
BitCount = videoInfo.BmiHeader.BitCount;
AverageFrameRate = (int)(10000000 / videoInfo.AverageTimePerFrame);
MaximumFrameRate = (int)(10000000 / caps.MinFrameInterval);
MinimumFrameRate = (int)(10000000 / caps.MaxFrameInterval);
}
else
{
throw new ApplicationException("Unsupported format found.");
}
// ignore 12 bpp formats for now, since it was noticed they cause issues on Windows 8
// TODO: proper fix needs to be done so ICaptureGraphBuilder2::RenderStream() does not fail
// on such formats
if (BitCount <= 12)
{
//throw new ApplicationException( "Unsupported format found." );
}
}
finally
{
if (mediaType != null)
{
mediaType.Dispose( );
}
}
}
internal VideoCapabilities(IAMStreamConfig videoStreamConfig, int index)
{
AMMediaType mediaType = null;
VideoStreamConfigCaps caps = new VideoStreamConfigCaps( );
try
{
int hr = videoStreamConfig.GetStreamCaps(index, out mediaType, caps);
if (hr != 0)
{
Marshal.ThrowExceptionForHR(hr);
}
if (mediaType.FormatType == FormatType.VideoInfo)
{
VideoInfoHeader videoInfo = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
FrameSize = new Size(videoInfo.BmiHeader.Width, videoInfo.BmiHeader.Height);
BitCount = videoInfo.BmiHeader.BitCount;
AverageFrameRate = (int)(10000000 / videoInfo.AverageTimePerFrame);
MaximumFrameRate = (int)(10000000 / caps.MinFrameInterval);
}
else if (mediaType.FormatType == FormatType.VideoInfo2)
{
VideoInfoHeader2 videoInfo = (VideoInfoHeader2)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader2));
FrameSize = new Size(videoInfo.BmiHeader.Width, videoInfo.BmiHeader.Height);
BitCount = videoInfo.BmiHeader.BitCount;
AverageFrameRate = (int)(10000000 / videoInfo.AverageTimePerFrame);
MaximumFrameRate = (int)(10000000 / caps.MinFrameInterval);
}
else
{
throw new ApplicationException("Unsupported format found.");
}
if (BitCount <= 12)
{
throw new ApplicationException("Unsupported format found.");
}
}
finally
{
if (mediaType != null)
{
mediaType.Dispose( );
}
}
}
// Token: 0x06000027 RID: 39 RVA: 0x00002718 File Offset: 0x00000918
internal VideoCapabilities(IAMStreamConfig videoStreamConfig, int index)
{
AMMediaType ammediaType = null;
VideoStreamConfigCaps videoStreamConfigCaps = new VideoStreamConfigCaps();
try
{
int streamCaps = videoStreamConfig.GetStreamCaps(index, out ammediaType, videoStreamConfigCaps);
if (streamCaps != 0)
{
Marshal.ThrowExceptionForHR(streamCaps);
}
if (ammediaType.FormatType == FormatType.VideoInfo)
{
VideoInfoHeader videoInfoHeader = (VideoInfoHeader)Marshal.PtrToStructure(ammediaType.FormatPtr, typeof(VideoInfoHeader));
this.FrameSize = new Size(videoInfoHeader.BmiHeader.Width, videoInfoHeader.BmiHeader.Height);
this.BitCount = (int)videoInfoHeader.BmiHeader.BitCount;
this.AverageFrameRate = (int)(10000000L / videoInfoHeader.AverageTimePerFrame);
this.MaximumFrameRate = (int)(10000000L / videoStreamConfigCaps.MinFrameInterval);
}
else
{
if (!(ammediaType.FormatType == FormatType.VideoInfo2))
{
throw new ApplicationException("Unsupported format found.");
}
VideoInfoHeader2 videoInfoHeader2 = (VideoInfoHeader2)Marshal.PtrToStructure(ammediaType.FormatPtr, typeof(VideoInfoHeader2));
this.FrameSize = new Size(videoInfoHeader2.BmiHeader.Width, videoInfoHeader2.BmiHeader.Height);
this.BitCount = (int)videoInfoHeader2.BmiHeader.BitCount;
this.AverageFrameRate = (int)(10000000L / videoInfoHeader2.AverageTimePerFrame);
this.MaximumFrameRate = (int)(10000000L / videoStreamConfigCaps.MinFrameInterval);
}
if (this.BitCount <= 12)
{
throw new ApplicationException("Unsupported format found.");
}
}
finally
{
if (ammediaType != null)
{
ammediaType.Dispose();
}
}
}
private void SetResolution(IAMStreamConfig streamConfig, VideoCapabilities resolution)
{
if (resolution == null)
{
return;
}
int capabilitiesCount = 0, capabilitySize = 0;
AMMediaType newMediaType = null;
VideoStreamConfigCaps caps = new VideoStreamConfigCaps( );
streamConfig.GetNumberOfCapabilities(out capabilitiesCount, out capabilitySize);
for (int i = 0; i < capabilitiesCount; i++)
{
try
{
VideoCapabilities vc = new VideoCapabilities(streamConfig, i);
if (resolution == vc)
{
if (streamConfig.GetStreamCaps(i, out newMediaType, caps) == 0)
{
break;
}
}
}
catch
{
}
}
if (newMediaType != null)
{
streamConfig.SetFormat(newMediaType);
newMediaType.Dispose( );
}
}
// 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);
}
}
private void WorkerThread()
{
ReasonToFinishPlaying reason = ReasonToFinishPlaying.StoppedByUser;
Grabber grabber = new Grabber(this);
object obj = null;
object obj2 = null;
IGraphBuilder graphBuilder = null;
IBaseFilter filter = null;
IBaseFilter baseFilter = null;
ISampleGrabber sampleGrabber = null;
IMediaControl mediaControl = null;
IMediaEventEx mediaEventEx = null;
try
{
Type typeFromCLSID = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating filter graph");
}
obj = Activator.CreateInstance(typeFromCLSID);
graphBuilder = (IGraphBuilder)obj;
graphBuilder.AddSourceFilter(fileName, "source", out filter);
if (filter == null)
{
throw new ApplicationException("Failed creating source filter");
}
typeFromCLSID = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
obj2 = Activator.CreateInstance(typeFromCLSID);
sampleGrabber = (ISampleGrabber)obj2;
baseFilter = (IBaseFilter)obj2;
graphBuilder.AddFilter(baseFilter, "grabber");
AMMediaType aMMediaType = new AMMediaType();
aMMediaType.MajorType = MediaType.Video;
aMMediaType.SubType = MediaSubType.RGB24;
sampleGrabber.SetMediaType(aMMediaType);
int num = 0;
IPin inPin = Tools.GetInPin(baseFilter, 0);
IPin pin = null;
while (true)
{
pin = Tools.GetOutPin(filter, num);
if (pin == null)
{
Marshal.ReleaseComObject(inPin);
throw new ApplicationException("Did not find acceptable output video pin in the given source");
}
if (graphBuilder.Connect(pin, inPin) >= 0)
{
break;
}
Marshal.ReleaseComObject(pin);
pin = null;
num++;
}
Marshal.ReleaseComObject(pin);
Marshal.ReleaseComObject(inPin);
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 (!preventFreezing)
{
graphBuilder.Render(Tools.GetOutPin(baseFilter, 0));
IVideoWindow videoWindow = (IVideoWindow)obj;
videoWindow.put_AutoShow(autoShow: false);
videoWindow = null;
}
sampleGrabber.SetBufferSamples(bufferThem: false);
sampleGrabber.SetOneShot(oneShot: false);
sampleGrabber.SetCallback(grabber, 1);
if (!referenceClockEnabled)
{
IMediaFilter mediaFilter = (IMediaFilter)obj;
mediaFilter.SetSyncSource(null);
}
mediaControl = (IMediaControl)obj;
mediaEventEx = (IMediaEventEx)obj;
mediaControl.Run();
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.Complete)
{
reason = ReasonToFinishPlaying.EndOfStreamReached;
break;
}
}
}while (!stopEvent.WaitOne(100, exitContext: false));
mediaControl.Stop();
}
catch (Exception ex)
{
if (this.VideoSourceError != null)
{
this.VideoSourceError(this, new VideoSourceErrorEventArgs(ex.Message));
}
}
finally
{
graphBuilder = null;
baseFilter = null;
sampleGrabber = null;
mediaControl = null;
mediaEventEx = null;
if (obj != null)
{
Marshal.ReleaseComObject(obj);
obj = null;
}
if (filter != null)
{
Marshal.ReleaseComObject(filter);
filter = null;
}
if (obj2 != null)
{
Marshal.ReleaseComObject(obj2);
obj2 = null;
}
}
if (this.PlayingFinished != null)
{
this.PlayingFinished(this, reason);
}
}
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 )
{
var reasonToStop = ReasonToFinishPlaying.StoppedByUser;
bool isSapshotSupported = false;
// grabber
var videoGrabber = new Grabber( this, false );
var snapshotGrabber = new Grabber( this, true );
// objects
object captureGraphObject = null;
object graphObject = null;
object videoGrabberObject = null;
object snapshotGrabberObject = null;
object crossbarObject = null;
// interfaces
ICaptureGraphBuilder2 captureGraph;
IFilterGraph2 graph;
IBaseFilter sourceBase;
IBaseFilter videoGrabberBase;
IBaseFilter snapshotGrabberBase;
ISampleGrabber videoSampleGrabber;
ISampleGrabber snapshotSampleGrabber;
IMediaControl mediaControl;
IAMVideoControl videoControl = null;
IMediaEventEx mediaEvent;
IPin pinStillImage = null;
IAMCrossbar crossbar = 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 video control interface of the device
try
{
videoControl = (IAMVideoControl) _sourceObject;
}
catch
{
// some camera drivers may not support IAMVideoControl interface
}
// get type of sample grabber
type = Type.GetTypeFromCLSID( Clsid.SampleGrabber );
if ( type == null )
throw new ApplicationException( "Failed creating sample grabber" );
// create sample grabber used for video capture
videoGrabberObject = Activator.CreateInstance( type );
videoSampleGrabber = (ISampleGrabber) videoGrabberObject;
videoGrabberBase = (IBaseFilter) videoGrabberObject;
// create sample grabber used for snapshot capture
snapshotGrabberObject = Activator.CreateInstance( type );
snapshotSampleGrabber = (ISampleGrabber) snapshotGrabberObject;
snapshotGrabberBase = (IBaseFilter) snapshotGrabberObject;
// add source and grabber filters to graph
graph.AddFilter( sourceBase, "source" );
graph.AddFilter( videoGrabberBase, "grabber_video" );
graph.AddFilter( snapshotGrabberBase, "grabber_snapshot" );
// set media type
var mediaType = new AMMediaType {MajorType = MediaType.Video, SubType = MediaSubType.RGB24};
videoSampleGrabber.SetMediaType( mediaType );
snapshotSampleGrabber.SetMediaType( mediaType );
// get crossbar object to to allows configuring pins of capture card
captureGraph.FindInterface( FindDirection.UpstreamOnly, Guid.Empty, sourceBase, typeof( IAMCrossbar ).GUID, out crossbarObject );
if ( crossbarObject != null )
{
crossbar = (IAMCrossbar) crossbarObject;
}
_isCrossbarAvailable = ( crossbar != null );
_crossbarVideoInputs = ColletCrossbarVideoInputs( crossbar );
if ( videoControl != null )
{
// find Still Image output pin of the vedio device
captureGraph.FindPin( _sourceObject, PinDirection.Output,
PinCategory.StillImage, MediaType.Video, false, 0, out pinStillImage );
// check if it support trigger mode
if ( pinStillImage != null )
{
VideoControlFlags caps;
videoControl.GetCaps( pinStillImage, out caps );
isSapshotSupported = ( ( caps & VideoControlFlags.ExternalTriggerEnable ) != 0 );
}
}
// configure video sample grabber
videoSampleGrabber.SetBufferSamples( false );
videoSampleGrabber.SetOneShot( false );
videoSampleGrabber.SetCallback( videoGrabber, 1 );
// configure snapshot sample grabber
snapshotSampleGrabber.SetBufferSamples( true );
snapshotSampleGrabber.SetOneShot( false );
snapshotSampleGrabber.SetCallback( snapshotGrabber, 1 );
// configure pins
GetPinCapabilitiesAndConfigureSizeAndRate( captureGraph, sourceBase,
PinCategory.Capture, _videoResolution, ref _videoCapabilities );
if ( isSapshotSupported )
{
GetPinCapabilitiesAndConfigureSizeAndRate( captureGraph, sourceBase,
PinCategory.StillImage, _snapshotResolution, ref _snapshotCapabilities );
}
else
{
_snapshotCapabilities = new VideoCapabilities[0];
}
// put video/snapshot capabilities into cache
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 )
{
// render capture pin
captureGraph.RenderStream( PinCategory.Capture, MediaType.Video, sourceBase, null, videoGrabberBase );
if ( videoSampleGrabber.GetConnectedMediaType( mediaType ) == 0 )
{
var vih = (VideoInfoHeader) Marshal.PtrToStructure( mediaType.FormatPtr, typeof( VideoInfoHeader ) );
videoGrabber.Width = vih.BmiHeader.Width;
videoGrabber.Height = vih.BmiHeader.Height;
mediaType.Dispose( );
}
if ( ( isSapshotSupported ) && ( _provideSnapshots ) )
{
// render snapshot pin
captureGraph.RenderStream( PinCategory.StillImage, MediaType.Video, sourceBase, null, snapshotGrabberBase );
if ( snapshotSampleGrabber.GetConnectedMediaType( mediaType ) == 0 )
{
var vih = (VideoInfoHeader) Marshal.PtrToStructure( mediaType.FormatPtr, typeof( VideoInfoHeader ) );
snapshotGrabber.Width = vih.BmiHeader.Width;
snapshotGrabber.Height = vih.BmiHeader.Height;
mediaType.Dispose( );
}
}
// get media control
mediaControl = (IMediaControl) graphObject;
// get media events' interface
mediaEvent = (IMediaEventEx) graphObject;
// run
mediaControl.Run( );
if ( ( isSapshotSupported ) && ( _provideSnapshots ) )
{
_startTime = DateTime.Now;
videoControl.SetMode( pinStillImage, VideoControlFlags.ExternalTriggerEnable );
}
do
{
if ( mediaEvent != null )
{
IntPtr p1;
IntPtr p2;
DsEvCode code;
if ( mediaEvent.GetEvent( out code, out p1, out p2, 0 ) >= 0 )
{
mediaEvent.FreeEventParams( code, p1, p2 );
if ( code == DsEvCode.DeviceLost )
{
reasonToStop = ReasonToFinishPlaying.DeviceLost;
break;
}
}
}
if ( _needToSetVideoInput )
{
_needToSetVideoInput = false;
// set/check current input type of a video card (frame grabber)
if ( _isCrossbarAvailable.Value )
{
SetCurrentCrossbarInput( crossbar, _crossbarVideoInput );
_crossbarVideoInput = GetCurrentCrossbarInput( crossbar );
}
}
if ( _needToSimulateTrigger )
{
_needToSimulateTrigger = false;
if ( ( isSapshotSupported ) && ( _provideSnapshots ) )
{
videoControl.SetMode( pinStillImage, VideoControlFlags.Trigger );
}
}
if ( _needToDisplayPropertyPage )
{
_needToDisplayPropertyPage = false;
DisplayPropertyPage( _parentWindowForPropertyPage, _sourceObject );
if ( crossbar != null )
{
_crossbarVideoInput = GetCurrentCrossbarInput( crossbar );
}
}
if ( _needToDisplayCrossBarPropertyPage )
{
_needToDisplayCrossBarPropertyPage = false;
if ( crossbar != null )
{
DisplayPropertyPage( _parentWindowForPropertyPage, crossbar );
_crossbarVideoInput = GetCurrentCrossbarInput( crossbar );
}
}
}
while ( !_stopEvent.WaitOne( 100, false ) );
mediaControl.Stop( );
}
}
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;
mediaControl = null;
videoControl = null;
mediaEvent = null;
pinStillImage = null;
crossbar = null;
videoGrabberBase = null;
snapshotGrabberBase = null;
videoSampleGrabber = null;
snapshotSampleGrabber = null;
if ( graphObject != null )
{
Marshal.ReleaseComObject( graphObject );
graphObject = null;
}
if ( _sourceObject != null )
{
Marshal.ReleaseComObject( _sourceObject );
_sourceObject = null;
}
if ( videoGrabberObject != null )
{
Marshal.ReleaseComObject( videoGrabberObject );
videoGrabberObject = null;
}
if ( snapshotGrabberObject != null )
{
Marshal.ReleaseComObject( snapshotGrabberObject );
snapshotGrabberObject = null;
}
if ( captureGraphObject != null )
{
Marshal.ReleaseComObject( captureGraphObject );
captureGraphObject = null;
}
if ( crossbarObject != null )
{
Marshal.ReleaseComObject( crossbarObject );
crossbarObject = null;
}
}
if ( PlayingFinished != null )
{
PlayingFinished( this, reasonToStop );
}
}
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);
}
}
public DirectShowCapture(string name, string deviceMoniker)
{
this.Name = name;
this.Uuid = deviceMoniker;
this.Width = 1600;
this.Height = 1200;
captureGraphBuilder2 = Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.CaptureGraphBuilder2)) as ICaptureGraphBuilder2;
filterGraph2 = Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.FilterGraph)) as IFilterGraph2;
sampleGrabberBaseFilter = Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.SampleGrabber)) as IBaseFilter;
sampleGrabber = sampleGrabberBaseFilter as ISampleGrabber;
captureGraphBuilder2.SetFiltergraph(filterGraph2 as IGraphBuilder);
FilterInfo.CreateFilter(this.Uuid, out captureSourceBaseFilter);
captureSourceBaseFilter.SetSyncSource(IntPtr.Zero);
sampleGrabberBaseFilter.SetSyncSource(IntPtr.Zero);
videoProcAmp = captureSourceBaseFilter as IAMVideoProcAmp;
cameraControl = captureSourceBaseFilter as IAMCameraControl;
ksPropertySet = captureSourceBaseFilter as IKsPropertySet;
videoProcAmp.Set(VideoProcAmpProperty.ColorEnable, 1, VideoProcAmpFlags.Manual);
ksPropertySet.SetExposure(TimeSpan.FromSeconds(1000 / 120));
filterGraph2.AddFilter(captureSourceBaseFilter, "source");
filterGraph2.AddFilter(sampleGrabberBaseFilter, "grabber");
object streamConfigObj;
captureGraphBuilder2.FindInterface(PinCategory.Capture, MediaType.Video, captureSourceBaseFilter, typeof(IAMStreamConfig).GUID, out streamConfigObj);
IAMStreamConfig streamConfig = (IAMStreamConfig)streamConfigObj;
videoCapabilities = Pentacorn.Vision.Captures.DirectShow.VideoCapabilities.FromStreamConfig(streamConfig);
var desiredFormat = videoCapabilities.Where(vc => vc.FrameSize.Width == this.Width && vc.FrameSize.Height == this.Height)
.OrderByDescending(vc => vc.MaxFrameRate).First();
streamConfig.SetFormat(desiredFormat.MediaType);
var hr = sampleGrabber.SetMediaType(desiredFormat.MediaType);
if (hr < 0)
throw new Win32Exception(hr);
sampleGrabber.SetBufferSamples(true);
sampleGrabber.SetOneShot(false);
sampleGrabber.SetCallback(this, 1);
captureGraphBuilder2.RenderStream(PinCategory.Capture, MediaType.Video, captureSourceBaseFilter, null, sampleGrabberBaseFilter);
if (hr < 0)
throw new Win32Exception(hr);
AMMediaType mediaType = new AMMediaType();
if (sampleGrabber.GetConnectedMediaType(mediaType) >= 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
if (this.Width != vih.BmiHeader.Width)
throw new Exception("DirectShow capture width not what's requested.");
if (this.Height != vih.BmiHeader.Height)
throw new Exception("DirectShow capture width not what's requested.");
mediaType.Dispose();
}
mediaControl = (IMediaControl)filterGraph2;
mediaControl.Run();
}
public void WorkerThread()
{
bool flag = false;
Grabber pCallback = new Grabber(this);
object o = null;
object obj3 = null;
object obj4 = null;
IGraphBuilder builder = null;
IBaseFilter pFilter = null;
IBaseFilter filter2 = null;
ISampleGrabber grabber2 = null;
IFileSourceFilter filter3 = null;
IMediaControl control = null;
IMediaEventEx ex = null;
while (!flag && !this.stopEvent.WaitOne(0, true))
{
try
{
try
{
Type typeFromCLSID = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating filter graph");
}
o = Activator.CreateInstance(typeFromCLSID);
builder = (IGraphBuilder)o;
typeFromCLSID = Type.GetTypeFromCLSID(Clsid.WindowsMediaSource);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating WM source");
}
obj3 = Activator.CreateInstance(typeFromCLSID);
pFilter = (IBaseFilter)obj3;
typeFromCLSID = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
obj4 = Activator.CreateInstance(typeFromCLSID);
grabber2 = (ISampleGrabber)obj4;
filter2 = (IBaseFilter)obj4;
builder.AddFilter(pFilter, "source");
builder.AddFilter(filter2, "grabber");
AMMediaType pmt = new AMMediaType {
majorType = MediaType.Video,
subType = MediaSubType.RGB24
};
grabber2.SetMediaType(pmt);
filter3 = (IFileSourceFilter)obj3;
filter3.Load(this.source, null);
if (builder.Connect(DSTools.GetOutPin(pFilter, 0), DSTools.GetInPin(filter2, 0)) < 0)
{
throw new ApplicationException("Failed connecting filters");
}
if (grabber2.GetConnectedMediaType(pmt) == 0)
{
VideoInfoHeader header = (VideoInfoHeader)Marshal.PtrToStructure(pmt.formatPtr, typeof(VideoInfoHeader));
pCallback.Width = header.BmiHeader.Width;
pCallback.Height = header.BmiHeader.Height;
pmt.Dispose();
}
builder.Render(DSTools.GetOutPin(filter2, 0));
grabber2.SetBufferSamples(false);
grabber2.SetOneShot(false);
grabber2.SetCallback(pCallback, 1);
IVideoWindow window = (IVideoWindow)o;
window.put_AutoShow(false);
window = null;
ex = (IMediaEventEx)o;
control = (IMediaControl)o;
control.Run();
while (!this.stopEvent.WaitOne(0, true))
{
int num;
int num2;
int num3;
Thread.Sleep(100);
if (ex.GetEvent(out num, out num2, out num3, 0) == 0)
{
ex.FreeEventParams(num, num2, num3);
if (num == 1)
{
break;
}
}
}
control.StopWhenReady();
}
catch (Exception)
{
flag = true;
}
continue;
}
finally
{
ex = null;
control = null;
filter3 = null;
builder = null;
pFilter = null;
filter2 = null;
grabber2 = null;
if (o != null)
{
Marshal.ReleaseComObject(o);
o = null;
}
if (obj3 != null)
{
Marshal.ReleaseComObject(obj3);
obj3 = null;
}
if (obj4 != null)
{
Marshal.ReleaseComObject(obj4);
obj4 = null;
}
}
}
}
// Thread entry point
public void WorkerThread()
{
bool failed = false;
// grabber
Grabber grabber = new Grabber(this);
// objects
object graphObj = null;
object sourceObj = null;
object grabberObj = null;
// interfaces
IGraphBuilder graph = null;
IBaseFilter sourceBase = null;
IBaseFilter grabberBase = null;
ISampleGrabber sg = null;
IFileSourceFilter fileSource = null;
IMediaControl mc = null;
IMediaEventEx mediaEvent = null;
int code, param1, param2;
while ((!failed) && (!stopEvent.WaitOne(0, true)))
{
try
{
// Get type for filter graph
Type srvType = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (srvType == null)
{
throw new ApplicationException("Failed creating filter graph");
}
// create filter graph
graphObj = Activator.CreateInstance(srvType);
graph = (IGraphBuilder)graphObj;
// Get type for windows media source filter
srvType = Type.GetTypeFromCLSID(Clsid.WindowsMediaSource);
if (srvType == null)
{
throw new ApplicationException("Failed creating WM source");
}
// create windows media source filter
sourceObj = Activator.CreateInstance(srvType);
sourceBase = (IBaseFilter)sourceObj;
// Get type for sample grabber
srvType = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (srvType == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
// create sample grabber
grabberObj = Activator.CreateInstance(srvType);
sg = (ISampleGrabber)grabberObj;
grabberBase = (IBaseFilter)grabberObj;
// add source filter to graph
graph.AddFilter(sourceBase, "source");
graph.AddFilter(grabberBase, "grabber");
// set media type
AMMediaType mt = new AMMediaType();
mt.majorType = MediaType.Video;
mt.subType = MediaSubType.RGB24;
sg.SetMediaType(mt);
// load file
fileSource = (IFileSourceFilter)sourceObj;
fileSource.Load(this.source, null);
// connect pins
if (graph.Connect(DSTools.GetOutPin(sourceBase, 0), DSTools.GetInPin(grabberBase, 0)) < 0)
{
throw new ApplicationException("Failed connecting filters");
}
// get media type
if (sg.GetConnectedMediaType(mt) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mt.formatPtr, typeof(VideoInfoHeader));
grabber.Width = vih.BmiHeader.Width;
grabber.Height = vih.BmiHeader.Height;
mt.Dispose();
}
// render
graph.Render(DSTools.GetOutPin(grabberBase, 0));
//
sg.SetBufferSamples(false);
sg.SetOneShot(false);
sg.SetCallback(grabber, 1);
// window
IVideoWindow win = (IVideoWindow)graphObj;
win.put_AutoShow(false);
win = null;
// get events interface
mediaEvent = (IMediaEventEx)graphObj;
// get media control
mc = (IMediaControl)graphObj;
// run
mc.Run();
while (!stopEvent.WaitOne(0, true))
{
Thread.Sleep(100);
// get an event
if (mediaEvent.GetEvent(out code, out param1, out param2, 0) == 0)
{
// release params
mediaEvent.FreeEventParams(code, param1, param2);
//
if (code == (int)EventCode.Complete)
{
break;
}
}
}
mc.StopWhenReady();
}
// catch any exceptions
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("----: " + e.Message);
failed = true;
}
// finalization block
finally
{
// release all objects
mediaEvent = null;
mc = null;
fileSource = null;
graph = null;
sourceBase = null;
grabberBase = null;
sg = null;
if (graphObj != null)
{
Marshal.ReleaseComObject(graphObj);
graphObj = null;
}
if (sourceObj != null)
{
Marshal.ReleaseComObject(sourceObj);
sourceObj = null;
}
if (grabberObj != null)
{
Marshal.ReleaseComObject(grabberObj);
grabberObj = null;
}
}
}
}
/// <summary>
/// Worker thread.
/// </summary>
///
private void WorkerThread( )
{
// grabber
Grabber grabber = new Grabber(this);
// objects
object graphObject = null;
object sourceObject = null;
object grabberObject = null;
// interfaces
IGraphBuilder graph = null;
IBaseFilter sourceBase = null;
IBaseFilter grabberBase = null;
ISampleGrabber sampleGrabber = null;
IMediaControl mediaControl = null;
IFileSourceFilter fileSource = null;
try
{
// get type for filter graph
Type type = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (type == null)
{
throw new ApplicationException("Failed creating filter graph");
}
// create filter graph
graphObject = Activator.CreateInstance(type);
graph = (IGraphBuilder)graphObject;
// create source device's object
type = Type.GetTypeFromCLSID(Clsid.AsyncReader);
if (type == null)
{
throw new ApplicationException("Failed creating filter async reader");
}
sourceObject = Activator.CreateInstance(type);
sourceBase = (IBaseFilter)sourceObject;
fileSource = (IFileSourceFilter)sourceObject;
fileSource.Load(fileName, null);
// get type for 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);
// connect pins
if (graph.Connect(Tools.GetOutPin(sourceBase, 0), Tools.GetInPin(grabberBase, 0)) < 0)
{
throw new ApplicationException("Failed connecting filters");
}
// 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( );
}
// let's do rendering, if we don't need to prevent freezing
if (!preventFreezing)
{
// render pin
graph.Render(Tools.GetOutPin(grabberBase, 0));
// configure video window
IVideoWindow window = (IVideoWindow)graphObject;
window.put_AutoShow(false);
window = null;
}
// configure sample grabber
sampleGrabber.SetBufferSamples(false);
sampleGrabber.SetOneShot(false);
sampleGrabber.SetCallback(grabber, 1);
// get media control
mediaControl = (IMediaControl)graphObject;
// run
mediaControl.Run( );
while (!stopEvent.WaitOne(0, true))
{
Thread.Sleep(100);
}
mediaControl.StopWhenReady( );
}
catch (Exception exception)
{
// provide information to clients
if (VideoSourceError != null)
{
VideoSourceError(this, new VideoSourceErrorEventArgs(exception.Message));
}
}
finally
{
// release all objects
graph = null;
sourceBase = null;
grabberBase = null;
sampleGrabber = null;
mediaControl = null;
fileSource = 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;
}
}
}
private void WorkerThread(bool runGraph)
{
ReasonToFinishPlaying reasonToStop = ReasonToFinishPlaying.StoppedByUser;
bool isSapshotSupported = false;
Grabber videoGrabber = new Grabber(this, false);
Grabber snapshotGrabber = new Grabber(this, true);
object captureGraphObject = null;
object graphObject = null;
object videoGrabberObject = null;
object snapshotGrabberObject = null;
object crossbarObject = null;
ICaptureGraphBuilder2 captureGraph = null;
IFilterGraph2 graph = null;
IBaseFilter sourceBase = null;
IBaseFilter videoGrabberBase = null;
IBaseFilter snapshotGrabberBase = null;
ISampleGrabber videoSampleGrabber = null;
ISampleGrabber snapshotSampleGrabber = null;
IMediaControl mediaControl = null;
IAMVideoControl videoControl = null;
IMediaEventEx mediaEvent = null;
IPin pinStillImage = null;
IAMCrossbar crossbar = null;
try
{
Type type = Type.GetTypeFromCLSID(Clsid.CaptureGraphBuilder2);
if (type == null)
{
throw new ApplicationException("Failed creating capture graph builder");
}
captureGraphObject = Activator.CreateInstance(type);
captureGraph = (ICaptureGraphBuilder2)captureGraphObject;
type = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (type == null)
{
throw new ApplicationException("Failed creating filter graph");
}
graphObject = Activator.CreateInstance(type);
graph = (IFilterGraph2)graphObject;
captureGraph.SetFiltergraph((IGraphBuilder)graph);
sourceObject = FilterInfo.CreateFilter(deviceMoniker);
if (sourceObject == null)
{
throw new ApplicationException("Failed creating device object for moniker");
}
sourceBase = (IBaseFilter)sourceObject;
try
{
videoControl = (IAMVideoControl)sourceObject;
}
catch
{
}
type = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (type == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
videoGrabberObject = Activator.CreateInstance(type);
videoSampleGrabber = (ISampleGrabber)videoGrabberObject;
videoGrabberBase = (IBaseFilter)videoGrabberObject;
snapshotGrabberObject = Activator.CreateInstance(type);
snapshotSampleGrabber = (ISampleGrabber)snapshotGrabberObject;
snapshotGrabberBase = (IBaseFilter)snapshotGrabberObject;
graph.AddFilter(sourceBase, "source");
graph.AddFilter(videoGrabberBase, "grabber_video");
graph.AddFilter(snapshotGrabberBase, "grabber_snapshot");
AMMediaType mediaType = new AMMediaType( );
mediaType.MajorType = MediaType.Video;
mediaType.SubType = MediaSubType.RGB24;
videoSampleGrabber.SetMediaType(mediaType);
snapshotSampleGrabber.SetMediaType(mediaType);
captureGraph.FindInterface(FindDirection.UpstreamOnly, Guid.Empty, sourceBase, typeof(IAMCrossbar).GUID, out crossbarObject);
if (crossbarObject != null)
{
crossbar = (IAMCrossbar)crossbarObject;
}
isCrossbarAvailable = (crossbar != null);
crossbarVideoInputs = ColletCrossbarVideoInputs(crossbar);
if (videoControl != null)
{
captureGraph.FindPin(sourceObject, PinDirection.Output,
PinCategory.StillImage, MediaType.Video, false, 0, out pinStillImage);
if (pinStillImage != null)
{
VideoControlFlags caps;
videoControl.GetCaps(pinStillImage, out caps);
isSapshotSupported = ((caps & VideoControlFlags.ExternalTriggerEnable) != 0);
}
}
videoSampleGrabber.SetBufferSamples(false);
videoSampleGrabber.SetOneShot(false);
videoSampleGrabber.SetCallback(videoGrabber, 1);
snapshotSampleGrabber.SetBufferSamples(true);
snapshotSampleGrabber.SetOneShot(false);
snapshotSampleGrabber.SetCallback(snapshotGrabber, 1);
GetPinCapabilitiesAndConfigureSizeAndRate(captureGraph, sourceBase,
PinCategory.Capture, videoResolution, ref videoCapabilities);
if (isSapshotSupported)
{
GetPinCapabilitiesAndConfigureSizeAndRate(captureGraph, sourceBase,
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)
{
captureGraph.RenderStream(PinCategory.Capture, MediaType.Video, sourceBase, null, videoGrabberBase);
if (videoSampleGrabber.GetConnectedMediaType(mediaType) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
videoGrabber.Width = vih.BmiHeader.Width;
videoGrabber.Height = vih.BmiHeader.Height;
mediaType.Dispose( );
}
if ((isSapshotSupported) && (provideSnapshots))
{
captureGraph.RenderStream(PinCategory.StillImage, MediaType.Video, sourceBase, null, snapshotGrabberBase);
if (snapshotSampleGrabber.GetConnectedMediaType(mediaType) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
snapshotGrabber.Width = vih.BmiHeader.Width;
snapshotGrabber.Height = vih.BmiHeader.Height;
mediaType.Dispose( );
}
}
mediaControl = (IMediaControl)graphObject;
mediaEvent = (IMediaEventEx)graphObject;
IntPtr p1, p2;
DsEvCode code;
mediaControl.Run( );
if ((isSapshotSupported) && (provideSnapshots))
{
startTime = DateTime.Now;
videoControl.SetMode(pinStillImage, VideoControlFlags.ExternalTriggerEnable);
}
do
{
if (mediaEvent != null)
{
if (mediaEvent.GetEvent(out code, out p1, out p2, 0) >= 0)
{
mediaEvent.FreeEventParams(code, p1, p2);
if (code == DsEvCode.DeviceLost)
{
reasonToStop = ReasonToFinishPlaying.DeviceLost;
break;
}
}
}
if (needToSetVideoInput)
{
needToSetVideoInput = false;
if (isCrossbarAvailable.Value)
{
SetCurrentCrossbarInput(crossbar, crossbarVideoInput);
crossbarVideoInput = GetCurrentCrossbarInput(crossbar);
}
}
if (needToSimulateTrigger)
{
needToSimulateTrigger = false;
if ((isSapshotSupported) && (provideSnapshots))
{
videoControl.SetMode(pinStillImage, VideoControlFlags.Trigger);
}
}
if (needToDisplayPropertyPage)
{
needToDisplayPropertyPage = false;
DisplayPropertyPage(parentWindowForPropertyPage, sourceObject);
if (crossbar != null)
{
crossbarVideoInput = GetCurrentCrossbarInput(crossbar);
}
}
if (needToDisplayCrossBarPropertyPage)
{
needToDisplayCrossBarPropertyPage = false;
if (crossbar != null)
{
DisplayPropertyPage(parentWindowForPropertyPage, crossbar);
crossbarVideoInput = GetCurrentCrossbarInput(crossbar);
}
}
}while (!stopEvent.WaitOne(100, false));
mediaControl.Stop( );
}
}
catch (Exception exception)
{
if (VideoSourceError != null)
{
VideoSourceError(this, new VideoSourceErrorEventArgs(exception.Message));
}
}
finally
{
captureGraph = null;
graph = null;
sourceBase = null;
mediaControl = null;
videoControl = null;
mediaEvent = null;
pinStillImage = null;
crossbar = null;
videoGrabberBase = null;
snapshotGrabberBase = null;
videoSampleGrabber = null;
snapshotSampleGrabber = null;
if (graphObject != null)
{
Marshal.ReleaseComObject(graphObject);
graphObject = null;
}
if (sourceObject != null)
{
Marshal.ReleaseComObject(sourceObject);
sourceObject = null;
}
if (videoGrabberObject != null)
{
Marshal.ReleaseComObject(videoGrabberObject);
videoGrabberObject = null;
}
if (snapshotGrabberObject != null)
{
Marshal.ReleaseComObject(snapshotGrabberObject);
snapshotGrabberObject = null;
}
if (captureGraphObject != null)
{
Marshal.ReleaseComObject(captureGraphObject);
captureGraphObject = null;
}
if (crossbarObject != null)
{
Marshal.ReleaseComObject(crossbarObject);
crossbarObject = null;
}
}
if (PlayingFinished != null)
{
PlayingFinished(this, reasonToStop);
}
}
private async void Start()
{
await Program.ComputeContext.SwitchTo();
CapGraphBuilder2 = Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.CaptureGraphBuilder2)) as ICaptureGraphBuilder2;
FilterGraph2 = Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.FilterGraph)) as IFilterGraph2;
SampleGrabberBaseFilter = Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.SampleGrabber)) as IBaseFilter;
SampleGrabber = SampleGrabberBaseFilter as ISampleGrabber;
CapGraphBuilder2.SetFiltergraph(FilterGraph2 as IGraphBuilder);
FilterInfo.CreateFilter(this.Uuid, out CaptureSourceBaseFilter);
CaptureSourceBaseFilter.SetSyncSource(IntPtr.Zero);
SampleGrabberBaseFilter.SetSyncSource(IntPtr.Zero);
VideoProcAmp = CaptureSourceBaseFilter as IAMVideoProcAmp;
CameraControl = CaptureSourceBaseFilter as IAMCameraControl;
KsPropertySet = CaptureSourceBaseFilter as IKsPropertySet;
VideoProcAmp.Set(VideoProcAmpProperty.ColorEnable, 1, VideoProcAmpFlags.Manual);
KsPropertySet.SetExposure(TimeSpan.FromSeconds(1000 / 120));
FilterGraph2.AddFilter(CaptureSourceBaseFilter, "source");
FilterGraph2.AddFilter(SampleGrabberBaseFilter, "grabber");
object streamConfigObj;
CapGraphBuilder2.FindInterface(PinCategory.Capture, MediaType.Video, CaptureSourceBaseFilter, typeof(IAMStreamConfig).GUID, out streamConfigObj);
IAMStreamConfig streamConfig = (IAMStreamConfig)streamConfigObj;
VideoCaps = Pentacorn.Captures.DirectShow.VideoCapabilities.FromStreamConfig(streamConfig);
var desiredFormat = VideoCaps.Where(vc => vc.FrameSize.Width == this.Width && vc.FrameSize.Height == this.Height)
.OrderByDescending(vc => vc.MaxFrameRate).First();
streamConfig.SetFormat(desiredFormat.MediaType);
var hr = SampleGrabber.SetMediaType(desiredFormat.MediaType);
if (hr < 0)
throw new Win32Exception(hr);
SampleGrabber.SetBufferSamples(true);
SampleGrabber.SetOneShot(false);
SampleGrabber.SetCallback(this, 1);
CapGraphBuilder2.RenderStream(PinCategory.Capture, MediaType.Video, CaptureSourceBaseFilter, null, SampleGrabberBaseFilter);
if (hr < 0)
throw new Win32Exception(hr);
AMMediaType mediaType = new AMMediaType();
if (SampleGrabber.GetConnectedMediaType(mediaType) >= 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
if (this.Width != vih.BmiHeader.Width)
throw new Exception("DirectShow capture width not what's requested.");
if (this.Height != vih.BmiHeader.Height)
throw new Exception("DirectShow capture width not what's requested.");
mediaType.Dispose();
}
MediaControl = (IMediaControl)FilterGraph2;
MediaControl.Run();
}
private void CreateFilters()
{
isValid = true;
// grabber
grabberVideo = new GrabberVideo(this);
grabberAudio = new GrabberAudio(this);
// objects
graphObject = null;
grabberObjectVideo = null;
grabberObjectAudio = null;
int sourceBaseVideoPinIndex = 0;
try {
// get type for filter graph
Type type = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (type == null)
{
throw new ApplicationException("Failed creating filter graph");
}
// create filter graph
graphObject = Activator.CreateInstance(type);
graph = (IGraphBuilder)graphObject;
// create source device's object
if (fileName.ToLower().EndsWith(".wmv"))
{
type = Type.GetTypeFromCLSID(Clsid.WMASFReader);
if (type == null)
{
throw new ApplicationException("Failed creating ASF Reader filter");
}
sourceBase = (IBaseFilter)Activator.CreateInstance(type);
IFileSourceFilter sourceFile = (IFileSourceFilter)sourceBase;
sourceFile.Load(fileName, null);
graph.AddFilter(sourceBase, "source");
sourceBaseVideoPinIndex = 1;
}
else
{
graph.AddSourceFilter(fileName, "source", out sourceBase);
if (sourceBase == null)
{
try {
type = Type.GetTypeFromCLSID(Clsid.AsyncReader);
if (type == null)
{
throw new ApplicationException("Failed creating Async Reader filter");
}
sourceBase = (IBaseFilter)Activator.CreateInstance(type);
IFileSourceFilter sourceFile = (IFileSourceFilter)sourceBase;
sourceFile.Load(fileName, null);
graph.AddFilter(sourceBase, "source");
} catch {
throw new ApplicationException("Failed creating source filter");
}
}
sourceBaseVideoPinIndex = 0;
}
// get type for sample grabber
type = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (type == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
// create sample grabber
grabberObjectVideo = Activator.CreateInstance(type);
sampleGrabberVideo = (ISampleGrabber)grabberObjectVideo;
grabberBaseVideo = (IBaseFilter)grabberObjectVideo;
// add grabber filters to graph
graph.AddFilter(grabberBaseVideo, "grabberVideo");
// set media type
AMMediaType mediaType = new AMMediaType {
MajorType = MediaType.Video,
SubType = MediaSubType.ARGB32 /* MediaSubType.RGB24 */
};
;
sampleGrabberVideo.SetMediaType(mediaType);
// connect pins
IPin outPin = Tools.GetOutPin(sourceBase, sourceBaseVideoPinIndex);
IPin inPin = Tools.GetInPin(grabberBaseVideo, 0);
if (graph.Connect(outPin, inPin) < 0)
{
throw new ApplicationException("Failed connecting sourceBase to grabberBaseVideo");
}
Marshal.ReleaseComObject(outPin);
Marshal.ReleaseComObject(inPin);
// get media type
if (sampleGrabberVideo.GetConnectedMediaType(mediaType) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
grabberVideo.Width = vih.BmiHeader.Width;
grabberVideo.Height = vih.BmiHeader.Height;
mediaType.Dispose();
}
if (useAudioGrabber)
{
// *****************************************************************
// ******** Add the audio grabber to monitor audio peaks ***********
bool audioGrabberIsConnected = false;
Tools.FilterInfo2 filterInfo2 = Tools.GetNextFilter(sourceBase, PinDirection.Output, 0);
foreach (Tools.PinInfo2 pinInfo2 in filterInfo2.Pins)
{
if (pinInfo2.PinInfo.Direction == PinDirection.Output)
{
if (!Tools.IsPinConnected(pinInfo2.Pin))
{
try {
graph.Render(pinInfo2.Pin);
AMMediaType mt = new AMMediaType();
pinInfo2.Pin.ConnectionMediaType(mt);
if (mt.MajorType == MediaType.Audio)
{
// Obtain a reference to the filter connected to the audio output of the video splitter (usually, this is the audio decoder)
Tools.FilterInfo2 decoderFilterInfo2 = Tools.GetNextFilter(pinInfo2.PinInfo.Filter, PinDirection.Output, 0);
// Remove all the filters connected to the audio decoder filter
System.Collections.Generic.List <Tools.FilterInfo2> filtersInfo2 = new System.Collections.Generic.List <Tools.FilterInfo2>();
Tools.FilterInfo2 testFilterInfo2 = Tools.GetNextFilter(decoderFilterInfo2.Filter, PinDirection.Output, 0);
while (true)
{
filtersInfo2.Add(testFilterInfo2);
testFilterInfo2 = Tools.GetNextFilter(testFilterInfo2.Filter, PinDirection.Output, 0);
if (testFilterInfo2.Filter == null)
{
break;
}
}
foreach (Tools.FilterInfo2 fi2 in filtersInfo2)
{
graph.RemoveFilter(fi2.Filter);
fi2.Release();
}
// get type for sample grabber
type = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (type == null)
{
throw new ApplicationException("Failed creating audio sample grabber");
}
// create sample grabber
grabberObjectAudio = Activator.CreateInstance(type);
sampleGrabberAudio = (ISampleGrabber)grabberObjectAudio;
grabberBaseAudio = (IBaseFilter)grabberObjectAudio;
// add grabber filters to graph
graph.AddFilter(grabberBaseAudio, "grabberAudio");
// set media type
AMMediaType mediaTypeAudio = new AMMediaType {
MajorType = MediaType.Audio,
SubType = MediaSubType.PCM,
FormatType = FormatType.WaveEx
};
sampleGrabberAudio.SetMediaType(mediaTypeAudio);
outPin = Tools.GetOutPin(decoderFilterInfo2.Filter, 0);
inPin = Tools.GetInPin(grabberBaseAudio, 0);
if (graph.Connect(outPin, inPin) < 0)
{
throw new ApplicationException("Failed connecting filter to grabberBaseAudio");
}
Marshal.ReleaseComObject(outPin);
Marshal.ReleaseComObject(inPin);
// Finally, connect the grabber to the audio renderer
outPin = Tools.GetOutPin(grabberBaseAudio, 0);
graph.Render(outPin);
mt = new AMMediaType();
outPin.ConnectionMediaType(mt);
if (!Tools.IsPinConnected(outPin))
{
throw new ApplicationException("Failed obtaining media audio information");
}
wavFormat = new WaveFormatEx();
Marshal.PtrToStructure(mt.FormatPtr, wavFormat);
Marshal.ReleaseComObject(outPin);
// configure sample grabber
sampleGrabberAudio.SetBufferSamples(false);
sampleGrabberAudio.SetOneShot(false);
sampleGrabberAudio.SetCallback(grabberAudio, 1);
audioGrabberIsConnected = true;
break;
}
} catch {
}
}
}
}
filterInfo2.Release();
if (!audioGrabberIsConnected)
{
foreach (Tools.PinInfo2 pinInfo2 in Tools.GetPins(sourceBase))
{
if (!Tools.IsPinConnected(pinInfo2.Pin))
{
foreach (AMMediaType mt in Tools.GetMediaTypes(pinInfo2.Pin))
{
if (mt.MajorType == MediaType.Audio)
{
// create sample grabber
grabberObjectAudio = Activator.CreateInstance(type);
sampleGrabberAudio = (ISampleGrabber)grabberObjectAudio;
grabberBaseAudio = (IBaseFilter)grabberObjectAudio;
// add grabber filters to graph
graph.AddFilter(grabberBaseAudio, "grabberAudio");
// set media type
AMMediaType mediaTypeAudio = new AMMediaType {
MajorType = MediaType.Audio,
SubType = MediaSubType.PCM,
FormatType = FormatType.WaveEx
};
sampleGrabberAudio.SetMediaType(mediaTypeAudio);
inPin = Tools.GetInPin(grabberBaseAudio, 0);
if (graph.Connect(pinInfo2.Pin, inPin) < 0)
{
throw new ApplicationException("Failed connecting sourceBase to grabberBaseVideo");
}
Marshal.ReleaseComObject(inPin);
// Finally, connect the grabber to the audio renderer
outPin = Tools.GetOutPin(grabberBaseAudio, 0);
graph.Render(outPin);
AMMediaType amt = new AMMediaType();
outPin.ConnectionMediaType(amt);
if (!Tools.IsPinConnected(outPin))
{
throw new ApplicationException("Failed obtaining media audio information");
}
wavFormat = new WaveFormatEx();
Marshal.PtrToStructure(amt.FormatPtr, wavFormat);
Marshal.ReleaseComObject(outPin);
// configure sample grabber
sampleGrabberAudio.SetBufferSamples(false);
sampleGrabberAudio.SetOneShot(false);
sampleGrabberAudio.SetCallback(grabberAudio, 1);
audioGrabberIsConnected = true;
break;
}
}
}
}
}
// *****************************************************************
}
// let's do the rendering, if we don't need to prevent freezing
if (!preventFreezing)
{
// render pin
graph.Render(Tools.GetOutPin(grabberBaseVideo, 0));
// configure video window
IVideoWindow window = (IVideoWindow)graphObject;
window.put_AutoShow(false);
window = null;
}
// configure sample grabber
sampleGrabberVideo.SetBufferSamples(false);
sampleGrabberVideo.SetOneShot(false);
sampleGrabberVideo.SetCallback(grabberVideo, 1);
// disable clock, if someone requested it
if (!referenceClockEnabled)
{
IMediaFilter mediaFilter = (IMediaFilter)graphObject;
mediaFilter.SetSyncSource(null);
}
// get media control
mediaControl = (IMediaControl)graphObject;
// get media seek control
mediaSeekControl = (IMediaSeeking)graphObject;
// get media events' interface
mediaEvent = (IMediaEventEx)graphObject;
// get media audio control
basicAudio = (IBasicAudio)graphObject;
} catch (Exception exception) {
DestroyFilters();
// provide information to clients
VideoSourceError?.Invoke(this, new VideoSourceErrorEventArgs(exception.Message));
}
}
// Thread entry point
public void WorkerThread()
{
int hr;
Guid cat;
Guid med;
// grabber
Grabber grabber = new Grabber(this);
// objects
object graphObj = null;
object grabberObj = null;
// interfaces
IGraphBuilder graphBuilder = null;
ICaptureGraphBuilder2 captureGraphBuilder = null;
IBaseFilter videoDeviceFilter = null;
IBaseFilter grabberFilter = null;
ISampleGrabber sg = null;
IMediaControl mc = null;
try
{
// Make a new filter graph
graphObj = Activator.CreateInstance(
Type.GetTypeFromCLSID(Clsid.FilterGraph, true));
graphBuilder = (IGraphBuilder)graphObj;
// Get the Capture Graph Builder
Guid clsid = Clsid.CaptureGraphBuilder2;
Guid riid = typeof(ICaptureGraphBuilder2).GUID;
captureGraphBuilder = (ICaptureGraphBuilder2)
TempFix.CreateDsInstance(ref clsid, ref riid);
// Link the CaptureGraphBuilder to the filter graph
hr = captureGraphBuilder.SetFiltergraph(graphBuilder);
if (hr < 0) Marshal.ThrowExceptionForHR(hr);
// Get the video device and add it to the filter graph
if (source != null)
{
videoDeviceFilter = (IBaseFilter)
Marshal.BindToMoniker(source);
hr = graphBuilder.AddFilter(videoDeviceFilter,
"Video Capture Device");
if (hr < 0) Marshal.ThrowExceptionForHR(hr);
}
// create sample grabber, object and filter
grabberObj = Activator.CreateInstance(
Type.GetTypeFromCLSID(Clsid.SampleGrabber, true));
grabberFilter = (IBaseFilter)grabberObj;
sg = (ISampleGrabber)grabberObj;
// add sample grabber filter to filter graph
hr = graphBuilder.AddFilter(grabberFilter, "grabber");
if (hr < 0) Marshal.ThrowExceptionForHR(hr);
// Try looking for an video device interleaved media type
IBaseFilter testFilter = videoDeviceFilter;
// grabberFilter (not supported)
object o;
cat = PinCategory.Capture;
med = MediaType.Interleaved;
Guid iid = typeof(IAMStreamConfig).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, testFilter, 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, testFilter, ref iid, out o);
if (hr != 0)
o = null;
}
// Set the video stream configuration to data member
videoStreamConfig = o as IAMStreamConfig;
o = null;
// Experimental testing: Try to set the Frame Size & Rate
// Results: When enabled, the grabber video breaks up into
// several duplicate frames (6 frames)
bool bdebug = true;
if (bdebug)
{
BitmapInfoHeader bmiHeader;
bmiHeader = (BitmapInfoHeader)
getStreamConfigSetting(videoStreamConfig, "BmiHeader");
bmiHeader.Width = framesize.Width;
bmiHeader.Height = framesize.Height;
setStreamConfigSetting(videoStreamConfig,
"BmiHeader", bmiHeader);
long avgTimePerFrame = (long)(10000000 / framerate);
setStreamConfigSetting(videoStreamConfig,
"AvgTimePerFrame", avgTimePerFrame);
}
// connect pins (Turns on the video device)
if (graphBuilder.Connect(DSTools.GetOutPin(
videoDeviceFilter, 0),
DSTools.GetInPin(grabberFilter, 0)) < 0)
throw new ApplicationException(
"Failed connecting filters");
// Set the sample grabber media type settings
AMMediaType mt = new AMMediaType();
mt.majorType = MediaType.Video;
mt.subType = MediaSubType.RGB24;
sg.SetMediaType(mt);
// get media type
if (sg.GetConnectedMediaType(mt) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mt.formatPtr, typeof(VideoInfoHeader));
System.Diagnostics.Debug.WriteLine("width = " + vih.BmiHeader.Width + ", height = " + vih.BmiHeader.Height);
grabber.Width = vih.BmiHeader.Width;
grabber.Height = vih.BmiHeader.Height;
mt.Dispose();
}
// render
graphBuilder.Render(DSTools.GetOutPin(grabberFilter, 0));
// Set various sample grabber properties
sg.SetBufferSamples(false);
sg.SetOneShot(false);
sg.SetCallback(grabber, 1);
// Do not show active (source) window
IVideoWindow win = (IVideoWindow)graphObj;
win.put_AutoShow(false);
win = null;
// get media control
mc = (IMediaControl)graphObj;
// run
mc.Run();
while (!stopEvent.WaitOne(0, true))
{
Thread.Sleep(100);
}
mc.StopWhenReady();
}
// catch any exceptions
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("----: " + e.Message);
}
// finalization block
finally
{
// release all objects
mc = null;
graphBuilder = null;
captureGraphBuilder = null;
videoDeviceFilter = null;
grabberFilter = null;
sg = null;
if (graphObj != null)
{
Marshal.ReleaseComObject(graphObj);
graphObj = null;
}
if (grabberObj != null)
{
Marshal.ReleaseComObject(grabberObj);
grabberObj = null;
}
}
}
// Thread entry point
public void WorkerThread()
{
// grabber
Grabber grabber = new Grabber(this);
// objects
object graphObj = null;
object sourceObj = null;
object grabberObj = null;
// interfaces
IGraphBuilder graph = null;
IBaseFilter sourceBase = null;
IBaseFilter grabberBase = null;
ISampleGrabber sg = null;
IMediaControl mc = null;
try
{
// Get type for filter graph
Type srvType = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (srvType == null)
{
throw new ApplicationException("Failed creating filter graph");
}
// create filter graph
graphObj = Activator.CreateInstance(srvType);
graph = (IGraphBuilder)graphObj;
// ----
UCOMIBindCtx bindCtx = null;
UCOMIMoniker moniker = null;
int n = 0;
// create bind context
if (Win32.CreateBindCtx(0, out bindCtx) == 0)
{
// convert moniker`s string to a moniker
if (Win32.MkParseDisplayName(bindCtx, source, ref n, out moniker) == 0)
{
// get device base filter
Guid filterId = typeof(IBaseFilter).GUID;
moniker.BindToObject(null, null, ref filterId, out sourceObj);
Marshal.ReleaseComObject(moniker);
moniker = null;
}
Marshal.ReleaseComObject(bindCtx);
bindCtx = null;
}
// ----
if (sourceObj == null)
{
throw new ApplicationException("Failed creating device object for moniker");
}
sourceBase = (IBaseFilter)sourceObj;
// Get type for sample grabber
srvType = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (srvType == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
// create sample grabber
grabberObj = Activator.CreateInstance(srvType);
sg = (ISampleGrabber)grabberObj;
grabberBase = (IBaseFilter)grabberObj;
// add source filter to graph
graph.AddFilter(sourceBase, "source");
graph.AddFilter(grabberBase, "grabber");
// set media type
AMMediaType mt = new AMMediaType();
mt.majorType = MediaType.Video;
mt.subType = MediaSubType.RGB24;
sg.SetMediaType(mt);
// connect pins
if (graph.Connect(DSTools.GetOutPin(sourceBase, 0), DSTools.GetInPin(grabberBase, 0)) < 0)
{
throw new ApplicationException("Failed connecting filters");
}
// get media type
if (sg.GetConnectedMediaType(mt) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mt.formatPtr, typeof(VideoInfoHeader));
grabber.Width = vih.BmiHeader.Width;
grabber.Height = vih.BmiHeader.Height;
mt.Dispose();
}
// render
graph.Render(DSTools.GetOutPin(grabberBase, 0));
//
sg.SetBufferSamples(false);
sg.SetOneShot(false);
sg.SetCallback(grabber, 1);
// window
IVideoWindow win = (IVideoWindow)graphObj;
win.put_AutoShow(false);
win = null;
// get media control
mc = (IMediaControl)graphObj;
// run
mc.Run();
while (!stopEvent.WaitOne(0, true))
{
Thread.Sleep(100);
}
mc.StopWhenReady();
}
// catch any exceptions
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("----: " + e.Message);
}
// finalization block
finally
{
// release all objects
mc = null;
graph = null;
sourceBase = null;
grabberBase = null;
sg = null;
if (graphObj != null)
{
Marshal.ReleaseComObject(graphObj);
graphObj = null;
}
if (sourceObj != null)
{
Marshal.ReleaseComObject(sourceObj);
sourceObj = null;
}
if (grabberObj != null)
{
Marshal.ReleaseComObject(grabberObj);
grabberObj = null;
}
}
}
public void WorkerThread()
{
Grabber pCallback = new Grabber(this);
object o = null;
object ppvResult = null;
object obj4 = null;
IGraphBuilder builder = null;
IBaseFilter pFilter = null;
IBaseFilter filter2 = null;
ISampleGrabber grabber2 = null;
IMediaControl control = null;
try
{
Type typeFromCLSID = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating filter graph");
}
o = Activator.CreateInstance(typeFromCLSID);
builder = (IGraphBuilder)o;
UCOMIBindCtx ppbc = null;
UCOMIMoniker ppmk = null;
int pchEaten = 0;
if (Win32.CreateBindCtx(0, out ppbc) == 0)
{
if (Win32.MkParseDisplayName(ppbc, this.source, ref pchEaten, out ppmk) == 0)
{
Guid gUID = typeof(IBaseFilter).GUID;
ppmk.BindToObject(null, null, ref gUID, out ppvResult);
Marshal.ReleaseComObject(ppmk);
ppmk = null;
}
Marshal.ReleaseComObject(ppbc);
ppbc = null;
}
if (ppvResult == null)
{
throw new ApplicationException("Failed creating device object for moniker");
}
pFilter = (IBaseFilter)ppvResult;
typeFromCLSID = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
obj4 = Activator.CreateInstance(typeFromCLSID);
grabber2 = (ISampleGrabber)obj4;
filter2 = (IBaseFilter)obj4;
builder.AddFilter(pFilter, "source");
builder.AddFilter(filter2, "grabber");
AMMediaType pmt = new AMMediaType {
majorType = MediaType.Video,
subType = MediaSubType.RGB24
};
grabber2.SetMediaType(pmt);
if (builder.Connect(DSTools.GetOutPin(pFilter, 0), DSTools.GetInPin(filter2, 0)) < 0)
{
throw new ApplicationException("Failed connecting filters");
}
if (grabber2.GetConnectedMediaType(pmt) == 0)
{
VideoInfoHeader header = (VideoInfoHeader)Marshal.PtrToStructure(pmt.formatPtr, typeof(VideoInfoHeader));
pCallback.Width = header.BmiHeader.Width;
pCallback.Height = header.BmiHeader.Height;
pmt.Dispose();
}
builder.Render(DSTools.GetOutPin(filter2, 0));
grabber2.SetBufferSamples(false);
grabber2.SetOneShot(false);
grabber2.SetCallback(pCallback, 1);
((IVideoWindow)o).put_AutoShow(false);
control = (IMediaControl)o;
control.Run();
while (!this.stopEvent.WaitOne(0, true))
{
Thread.Sleep(100);
}
control.StopWhenReady();
}
catch (Exception)
{
}
finally
{
control = null;
builder = null;
pFilter = null;
filter2 = null;
grabber2 = null;
if (o != null)
{
Marshal.ReleaseComObject(o);
o = null;
}
if (ppvResult != null)
{
Marshal.ReleaseComObject(ppvResult);
ppvResult = null;
}
if (obj4 != null)
{
Marshal.ReleaseComObject(obj4);
obj4 = null;
}
}
}
/// <summary>
/// Worker thread.
/// </summary>
///
private void WorkerThread( )
{
ReasonToFinishPlaying reasonToStop = ReasonToFinishPlaying.StoppedByUser;
// grabber
Grabber grabber = new Grabber(this);
// objects
object graphObject = null;
object grabberObject = null;
// interfaces
IGraphBuilder graph = null;
IBaseFilter sourceBase = null;
IBaseFilter grabberBase = null;
ISampleGrabber sampleGrabber = null;
IMediaControl mediaControl = null;
IMediaEventEx mediaEvent = null;
try
{
// get type for filter graph
Type type = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (type == null)
{
throw new ApplicationException("Failed creating filter graph");
}
// create filter graph
graphObject = Activator.CreateInstance(type);
graph = (IGraphBuilder)graphObject;
// create source device's object
graph.AddSourceFilter(fileName, "source", out sourceBase);
if (sourceBase == null)
{
throw new ApplicationException("Failed creating source filter");
}
// get type for 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 grabber filters to graph
graph.AddFilter(grabberBase, "grabber");
// set media type
AMMediaType mediaType = new AMMediaType( );
mediaType.MajorType = MediaType.Video;
mediaType.SubType = MediaSubType.RGB24;
sampleGrabber.SetMediaType(mediaType);
// connect pins
int pinToTry = 0;
IPin inPin = Tools.GetInPin(grabberBase, 0);
IPin outPin = null;
// find output pin acceptable by sample grabber
while (true)
{
outPin = Tools.GetOutPin(sourceBase, pinToTry);
if (outPin == null)
{
Marshal.ReleaseComObject(inPin);
throw new ApplicationException("Did not find acceptable output video pin in the given source");
}
if (graph.Connect(outPin, inPin) < 0)
{
Marshal.ReleaseComObject(outPin);
outPin = null;
pinToTry++;
}
else
{
break;
}
}
Marshal.ReleaseComObject(outPin);
Marshal.ReleaseComObject(inPin);
// 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( );
}
// let's do rendering, if we don't need to prevent freezing
if (!preventFreezing)
{
// render pin
graph.Render(Tools.GetOutPin(grabberBase, 0));
// configure video window
IVideoWindow window = (IVideoWindow)graphObject;
window.put_AutoShow(false);
window = null;
}
// configure sample grabber
sampleGrabber.SetBufferSamples(false);
sampleGrabber.SetOneShot(false);
sampleGrabber.SetCallback(grabber, 1);
// disable clock, if someone requested it
if (!referenceClockEnabled)
{
IMediaFilter mediaFilter = (IMediaFilter)graphObject;
mediaFilter.SetSyncSource(null);
}
// get media control
mediaControl = (IMediaControl)graphObject;
// get media events' interface
mediaEvent = (IMediaEventEx)graphObject;
IntPtr p1, p2;
DsEvCode code;
// run
mediaControl.Run( );
do
{
if (mediaEvent != null)
{
if (mediaEvent.GetEvent(out code, out p1, out p2, 0) >= 0)
{
mediaEvent.FreeEventParams(code, p1, p2);
if (code == DsEvCode.Complete)
{
reasonToStop = ReasonToFinishPlaying.EndOfStreamReached;
break;
}
}
}
}while (!stopEvent.WaitOne(100, false));
mediaControl.Stop( );
}
catch (Exception exception)
{
// provide information to clients
if (VideoSourceError != null)
{
VideoSourceError(this, new VideoSourceErrorEventArgs(exception.Message));
}
}
finally
{
// release all objects
graph = null;
grabberBase = null;
sampleGrabber = null;
mediaControl = null;
mediaEvent = null;
if (graphObject != null)
{
Marshal.ReleaseComObject(graphObject);
graphObject = null;
}
if (sourceBase != null)
{
Marshal.ReleaseComObject(sourceBase);
sourceBase = null;
}
if (grabberObject != null)
{
Marshal.ReleaseComObject(grabberObject);
grabberObject = null;
}
}
if (PlayingFinished != null)
{
PlayingFinished(this, reasonToStop);
}
}
private void WorkerThread(bool runGraph)
{
VideoSourceFinishedReasonType reasonToStop = VideoSourceFinishedReasonType.StoppedByUser;
bool isSapshotSupported = false;
// grabber
Grabber videoGrabber = new Grabber(this, false);
Grabber snapshotGrabber = new Grabber(this, true);
// objects
object captureGraphObject = null;
object graphObject = null;
object videoGrabberObject = null;
object snapshotGrabberObject = null;
// interfaces
ICaptureGraphBuilder2 captureGraph = null;
IFilterGraph2 graph = null;
IBaseFilter sourceBase = null;
IBaseFilter videoGrabberBase = null;
IBaseFilter snapshotGrabberBase = null;
ISampleGrabber videoSampleGrabber = null;
ISampleGrabber snapshotSampleGrabber = null;
IMediaControl mediaControl = null;
IAMVideoControl videoControl = null;
IMediaEventEx mediaEvent = null;
IPin pinStillImage = 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 video control interface of the device
try
{
videoControl = (IAMVideoControl)sourceObject;
}
catch
{
// some camera drivers may not support IAMVideoControl interface
}
// get type of sample grabber
type = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (type == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
// create sample grabber used for video capture
videoGrabberObject = Activator.CreateInstance(type);
videoSampleGrabber = (ISampleGrabber)videoGrabberObject;
videoGrabberBase = (IBaseFilter)videoGrabberObject;
// create sample grabber used for snapshot capture
snapshotGrabberObject = Activator.CreateInstance(type);
snapshotSampleGrabber = (ISampleGrabber)snapshotGrabberObject;
snapshotGrabberBase = (IBaseFilter)snapshotGrabberObject;
// add source and grabber filters to graph
graph.AddFilter(sourceBase, "source");
graph.AddFilter(videoGrabberBase, "grabber_video");
graph.AddFilter(snapshotGrabberBase, "grabber_snapshot");
// set media type
AMMediaType mediaType = new AMMediaType();
mediaType.MajorType = MediaType.Video;
mediaType.SubType = MediaSubType.RGB24;
videoSampleGrabber.SetMediaType(mediaType);
snapshotSampleGrabber.SetMediaType(mediaType);
if (videoControl != null)
{
// find Still Image output pin of the vedio device
captureGraph.FindPin(sourceObject, PinDirection.Output,
PinCategory.StillImage, MediaType.Video, false, 0, out pinStillImage);
// check if it support trigger mode
if (pinStillImage != null)
{
VideoControlFlags caps;
videoControl.GetCaps(pinStillImage, out caps);
isSapshotSupported = ((caps & VideoControlFlags.ExternalTriggerEnable) != 0);
}
}
// configure video sample grabber
videoSampleGrabber.SetBufferSamples(false);
videoSampleGrabber.SetOneShot(false);
videoSampleGrabber.SetCallback(videoGrabber, 1);
// configure snapshot sample grabber
snapshotSampleGrabber.SetBufferSamples(true);
snapshotSampleGrabber.SetOneShot(false);
snapshotSampleGrabber.SetCallback(snapshotGrabber, 1);
// configure pins
GetPinCapabilitiesAndConfigureSizeAndRate(captureGraph, sourceBase,
PinCategory.Capture, desiredFrameSize, desiredFrameRate, ref videoCapabilities);
if (isSapshotSupported)
{
GetPinCapabilitiesAndConfigureSizeAndRate(captureGraph, sourceBase,
PinCategory.StillImage, desiredSnapshotSize, 0, ref snapshotCapabilities);
}
else
{
snapshotCapabilities = new VideoCapabilities[0];
}
if (runGraph)
{
// render capture pin
captureGraph.RenderStream(PinCategory.Capture, MediaType.Video, sourceBase, null, videoGrabberBase);
if (videoSampleGrabber.GetConnectedMediaType(mediaType) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
videoGrabber.Width = vih.BmiHeader.Width;
videoGrabber.Height = vih.BmiHeader.Height;
mediaType.Dispose();
}
if ((isSapshotSupported) && (provideSnapshots))
{
// render snapshot pin
captureGraph.RenderStream(PinCategory.StillImage, MediaType.Video, sourceBase, null, snapshotGrabberBase);
if (snapshotSampleGrabber.GetConnectedMediaType(mediaType) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.FormatPtr, typeof(VideoInfoHeader));
snapshotGrabber.Width = vih.BmiHeader.Width;
snapshotGrabber.Height = vih.BmiHeader.Height;
mediaType.Dispose();
}
}
// get media control
mediaControl = (IMediaControl)graphObject;
// get media events' interface
mediaEvent = (IMediaEventEx)graphObject;
IntPtr p1, p2;
DsEvCode code;
// run
mediaControl.Run();
if ((isSapshotSupported) && (provideSnapshots))
{
startTime = DateTime.Now;
videoControl.SetMode(pinStillImage, VideoControlFlags.ExternalTriggerEnable);
}
while (!stopEvent.WaitOne(0, false))
{
Thread.Sleep(100);
if (mediaEvent != null)
{
if (mediaEvent.GetEvent(out code, out p1, out p2, 0) >= 0)
{
mediaEvent.FreeEventParams(code, p1, p2);
if (code == DsEvCode.DeviceLost)
{
reasonToStop = VideoSourceFinishedReasonType.DeviceLost;
break;
}
}
}
if (needToSimulateTrigger)
{
needToSimulateTrigger = false;
if ((isSapshotSupported) && (provideSnapshots))
{
videoControl.SetMode(pinStillImage, VideoControlFlags.Trigger);
}
}
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.Stop();
}
}
catch (Exception exception)
{
// provide information to clients
if (VideoSourceException != null)
{
VideoSourceException(this, new VideoSourceExceptionEventArgs(exception.Message));
}
}
finally
{
// release all objects
captureGraph = null;
graph = null;
sourceBase = null;
mediaControl = null;
videoControl = null;
mediaEvent = null;
pinStillImage = null;
videoGrabberBase = null;
snapshotGrabberBase = null;
videoSampleGrabber = null;
snapshotSampleGrabber = null;
if (graphObject != null)
{
Marshal.ReleaseComObject(graphObject);
graphObject = null;
}
if (sourceObject != null)
{
Marshal.ReleaseComObject(sourceObject);
sourceObject = null;
}
if (videoGrabberObject != null)
{
Marshal.ReleaseComObject(videoGrabberObject);
videoGrabberObject = null;
}
if (snapshotGrabberObject != null)
{
Marshal.ReleaseComObject(snapshotGrabberObject);
snapshotGrabberObject = null;
}
if (captureGraphObject != null)
{
Marshal.ReleaseComObject(captureGraphObject);
captureGraphObject = null;
}
}
if (VideoSourceFinished != null)
{
VideoSourceFinished(this, new VideoSourceFinishedEventArgs(reasonToStop));
}
}