private void cklbCameras_ItemCheck(object sender, System.Windows.Forms.ItemCheckEventArgs e)
{
if(e.NewValue == CheckState.Checked)
{
// We only support one device at a time for this sample
UncheckAllDevices();
// CF1 Select camera
// CF2 Initialize - Create filter and internal graph
vcg = new VideoCaptureGraph((FilterInfo)cklbCameras.SelectedItem);
vcg.RenderLocal(); // CF3 Connect all the filters
VideoWindow(); // CF4 Set video window (if you like)
vcg.Run(); // CF5 Start graph -> Show video
}
else // Unchecked
{
Cleanup();
}
}
public void RenderAndRunVideo(VideoCaptureGraph vcg, bool playIt)
{
if(playIt)
{
Log("Playing video (render and run graph) - " + vcg.Source.FriendlyName);
vcg.RenderLocal();
VideoCapability.DisableDXVA(vcg.FilgraphManager);
// Set device name in the video window and turn off the system menu
IVideoWindow iVW = (IVideoWindow)vcg.FilgraphManager;
iVW.Caption = vcg.Source.FriendlyName;
iVW.WindowStyle &= ~0x00080000; // WS_SYSMENU
vcg.Run();
}
else
{
Log("Stop video (stop and unrender graph) - " + vcg.Source.FriendlyName);
vcg.Stop();
vcg.RemoveRenderer();
// I have no idea why the video window stays up but this fixes it
GC.Collect();
}
Log(FilterGraph.Debug(vcg.IFilterGraph));
}
private void MDShowInteropForm_Load(object sender, System.EventArgs e)
{
this.Text = Strings.DirectShowSample;
// CF1 Add video devices to UI
foreach (FilterInfo fi in VideoSource.Sources())
{
cklbCameras.Items.Add(fi);
}
vcg = new VideoCaptureGraph(VideoSource.Sources()[0]);
vcg.RenderLocal(); // CF3 Connect all the filters
VideoWindow(); // CF4 Set video window (if you like)
vcg.Run();
}