/// <summary> start all the interfaces, graphs and preview window. </summary>
bool StartupVideo(UCOMIMoniker mon)
{
int hr;
try
{
if (!CreateCaptureDevice(mon))
{
return(false);
}
if (!GetInterfaces())
{
return(false);
}
if (!SetupGraph())
{
return(false);
}
if (!SetupVideoWindow())
{
return(false);
}
#if DEBUG
DsROT.AddGraphToRot(graphBuilder, out rotCookie); // graphBuilder capGraph
#endif
hr = mediaCtrl.Run();
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
bool hasTuner = DsUtils.ShowTunerPinDialog(capGraph, capFilter, this.Handle);
// toolBarBtnTune.Enabled = hasTuner;
return(true);
}
catch (Exception ee)
{
MessageBox.Show(this, "Could not start video stream\r\n" + ee.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return(false);
}
}
/// <summary> start all the interfaces, graphs and preview window. </summary>
bool StartupVideo(UCOMIMoniker mon)
{
int hr;
try
{
if (!CreateCaptureDevice(mon))
{
return(false);
}
if (!GetInterfaces())
{
return(false);
}
if (!SetupGraph())
{
return(false);
}
if (!SetupVideoWindow())
{
return(false);
}
#if DEBUG
DsROT.AddGraphToRot(graphBuilder, out rotCookie); // graphBuilder capGraph
#endif
hr = mediaCtrl.Run();
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
CaptureImage(); // Begins updating...
return(true);
}
catch (Exception ee)
{
MessageBox.Show(this, "Could not start video stream\r\n" + ee.Message, "DirectShow.NET", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return(false);
}
}
/// <summary> start all the interfaces, graphs and preview window. </summary>
bool StartupVideo()
{
int hr;
try
{
GetInterfaces();
SetupGraph();
#if DEBUG
DsROT.AddGraphToRot(graphBuilder, out rotCookie); // graphBuilder capGraph
#endif
return(true);
}
catch (Exception ee)
{
LogInfo(LogGroups.Console, "Could not start video stream\r\n" + ee.Message);
return(false);
}
}
protected void createGraph()
{
Guid cat;
Guid med;
int hr;
// Ensure required properties are set
if (videoDevice == null && audioDevice == null)
{
throw new ArgumentException("The video and/or audio device have not been set. Please set one or both to valid capture devices.\n");
}
// Skip if we are already created
if ((int)graphState < (int)GraphState.Created)
{
// Garbage collect, ensure that previous filters are released
GC.Collect();
// Make a new filter graph
graphBuilder = (IGraphBuilder)Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.FilterGraph, true));
// Get the Capture Graph Builder
Guid clsid = Clsid.CaptureGraphBuilder2;
Guid riid = typeof(ICaptureGraphBuilder2).GUID;
captureGraphBuilder = (ICaptureGraphBuilder2)BugFixes.InstantiateDirectShow(ref clsid, ref riid);
// Link the CaptureGraphBuilder to the filter graph
hr = captureGraphBuilder.SetFiltergraph(graphBuilder);
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
// Add the graph to the Running Object Table so it can be
// viewed with GraphEdit
#if DEBUG
rotCookie = DsROT.AddGraphToRot(graphBuilder);
#endif
// Get the video device and add it to the filter graph
if (VideoDevice != null)
{
videoDeviceFilter = (IBaseFilter)Marshal.BindToMoniker(VideoDevice.MonikerString);
hr = graphBuilder.AddFilter(videoDeviceFilter, "Video Capture Device");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
}
// Get the audio device and add it to the filter graph
if (AudioDevice != null)
{
audioDeviceFilter = (IBaseFilter)Marshal.BindToMoniker(AudioDevice.MonikerString);
hr = graphBuilder.AddFilter(audioDeviceFilter, "Audio Capture Device");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
}
// Get the video compressor and add it to the filter graph
if (VideoCompressor != null)
{
videoCompressorFilter = (IBaseFilter)Marshal.BindToMoniker(VideoCompressor.MonikerString);
hr = graphBuilder.AddFilter(videoCompressorFilter, "Video Compressor");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
}
// Get the audio compressor and add it to the filter graph
if (AudioCompressor != null)
{
audioCompressorFilter = (IBaseFilter)Marshal.BindToMoniker(AudioCompressor.MonikerString);
hr = graphBuilder.AddFilter(audioCompressorFilter, "Audio Compressor");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
}
// Retrieve the stream control interface for the video device
// FindInterface will also add any required filters
// (WDM devices in particular may need additional
// upstream filters to function).
// Try looking for an interleaved media type
object o;
cat = PinCategory.Capture;
med = MediaType.Interleaved;
Guid iid = typeof(IAMStreamConfig).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o);
if (hr != 0)
{
// If not found, try looking for a video media type
med = MediaType.Video;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o);
if (hr != 0)
{
o = null;
}
}
videoStreamConfig = o as IAMStreamConfig;
// Retrieve the stream control interface for the audio device
o = null;
cat = PinCategory.Capture;
med = MediaType.Audio;
iid = typeof(IAMStreamConfig).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, audioDeviceFilter, ref iid, out o);
if (hr != 0)
{
o = null;
}
audioStreamConfig = o as IAMStreamConfig;
// Retreive the media control interface (for starting/stopping graph)
mediaControl = (IMediaControl)graphBuilder;
// Reload any video crossbars
if (videoSources != null)
{
videoSources.Dispose();
}
videoSources = null;
// Reload any audio crossbars
if (audioSources != null)
{
audioSources.Dispose();
}
audioSources = null;
// Reload any property pages exposed by filters
if (propertyPages != null)
{
propertyPages.Dispose();
}
propertyPages = null;
// Reload capabilities of video device
videoCaps = null;
// Reload capabilities of video device
audioCaps = null;
// Retrieve TV Tuner if available
o = null;
cat = PinCategory.Capture;
med = MediaType.Interleaved;
iid = typeof(IAMTVTuner).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o);
if (hr != 0)
{
med = MediaType.Video;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o);
if (hr != 0)
{
o = null;
}
}
IAMTVTuner t = o as IAMTVTuner;
if (t != null)
{
tuner = new Tuner(t);
}
// Update the state now that we are done
graphState = GraphState.Created;
}
}
protected void CreateGraph()
{
// Ensure required properties are set
if (videoDevice == null && audioDevice == null)
{
throw new ArgumentException("The video and/or audio device have not been set. Please set one or both to valid capture devices.\n");
}
// Skip if we are already created
if ((int)graphState >= (int)GraphState.Created)
{
return;
}
// Make a new filter graph
graphBuilder = (IGraphBuilder)Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.FilterGraph, true));
// Get the Capture Graph Builder
Guid clsid = Clsid.CaptureGraphBuilder2;
Guid riid = typeof(ICaptureGraphBuilder2).GUID;
captureGraphBuilder = (ICaptureGraphBuilder2)DsBugWO.CreateDsInstance(ref clsid, ref riid);
// Link the CaptureGraphBuilder to the filter graph
var hr = captureGraphBuilder.SetFiltergraph(graphBuilder);
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
// Add the graph to the Running Object Table so it can be
// viewed with GraphEdit
#if DEBUG
DsROT.AddGraphToRot(graphBuilder, out rotCookie);
#endif
// Get the video device and add it to the filter graph
if (VideoDevice != null)
{
videoDeviceFilter = (IBaseFilter)Marshal.BindToMoniker(VideoDevice.MonikerString);
hr = graphBuilder.AddFilter(videoDeviceFilter, "Video Capture Device");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
}
// Get the audio device and add it to the filter graph
if (AudioDevice != null)
{
audioDeviceFilter = (IBaseFilter)Marshal.BindToMoniker(AudioDevice.MonikerString);
hr = graphBuilder.AddFilter(audioDeviceFilter, "Audio Capture Device");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
}
// Get the video compressor and add it to the filter graph
if (VideoCompressor != null)
{
videoCompressorFilter = (IBaseFilter)Marshal.BindToMoniker(VideoCompressor.MonikerString);
hr = graphBuilder.AddFilter(videoCompressorFilter, "Video Compressor");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
}
// Get the audio compressor and add it to the filter graph
if (AudioCompressor != null)
{
audioCompressorFilter = (IBaseFilter)Marshal.BindToMoniker(AudioCompressor.MonikerString);
hr = graphBuilder.AddFilter(audioCompressorFilter, "Audio Compressor");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
}
// Retrieve the stream control interface for the video device
// FindInterface will also add any required filters
// (WDM devices in particular may need additional
// upstream filters to function).
// Try looking for an interleaved media type
object o;
var cat = PinCategory.Capture;
var med = MediaType.Interleaved;
Guid iid = typeof(IAMStreamConfig).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o);
if (hr != 0)
{
// If not found, try looking for a video media type
med = MediaType.Video;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o);
if (hr != 0)
{
o = null;
}
}
videoStreamConfig = o as IAMStreamConfig;
cat = PinCategory.Preview;
med = MediaType.Interleaved;
iid = typeof(IAMStreamConfig).GUID;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o);
if (hr != 0)
{
// If not found, try looking for a video media type
med = MediaType.Video;
hr = captureGraphBuilder.FindInterface(
ref cat, ref med, videoDeviceFilter, ref iid, out o);
if (hr != 0)
{
o = null;
}
}
previewStreamConfig = o as IAMStreamConfig;
cat = PinCategory.Capture;
med = MediaType.Audio;
iid = typeof(IAMStreamConfig).GUID;
if ((_audioViaPci) &&
(audioDeviceFilter == null) && (videoDeviceFilter != null))
{
hr = captureGraphBuilder.FindInterface(ref cat, ref med, videoDeviceFilter, ref iid, out o);
}
else
{
hr = captureGraphBuilder.FindInterface(ref cat, ref med, audioDeviceFilter, ref iid, out o);
}
if (hr != 0)
{
o = null;
}
audioStreamConfig = o as IAMStreamConfig;
// Retreive the media control interface (for starting/stopping graph)
mediaControl = graphBuilder as IMediaControl;
// Reload any video crossbars
videoSources?.Dispose();
videoSources = null;
// Reload any audio crossbars
audioSources?.Dispose();
audioSources = null;
// Reload any property pages exposed by filters
//PropertyPages = null;
// Reload capabilities of video device
videoCaps = null;
previewCaps = null;
// Reload capabilities of video device
audioCaps = null;
graphState = GraphState.Created;
}
