private void Initialize()
{
if (_videoSource == null)
{
// create video source
_videoSource = _applicationConfiguration.SelectedVideoCaptureDevice == null
? new VideoCaptureDevice(_videoDevices.GetDefaultDeviceName())
: new VideoCaptureDevice(_applicationConfiguration.SelectedVideoCaptureDevice.MonikerString);
}
if (_videoCapturePipeline == null)
{
_videoCapturePipeline = Observable.FromEvent <NewFrameEventHandler, NewFrameEventArgs>(
d =>
{
NewFrameEventHandler nfeHandler = (sender, e) => d(e);
return(nfeHandler);
}, h => _videoSource.NewFrame += h, h => _videoSource.NewFrame -= h)
.Select(e => e.Frame)
.Subscribe(frame =>
{
if (DateTime.Now - _lastCaptureTime <
TimeSpan.FromSeconds(_applicationConfiguration.FrameCaptureInterval))
{
return;
}
_mediator.SendMessageAsync(this,
frame.Clone(new Rectangle(0, 0, frame.Width, frame.Height), frame.PixelFormat));
_lastCaptureTime = DateTime.Now;
}, exception => Debug.Write(exception));
}
}
public void Start()
{
// create video source
_videoSource = _applicationConfiguration.SelectedVideoCaptureDevice == null
? new VideoCaptureDevice(_videoDevices.GetDefaultDeviceName())
: new VideoCaptureDevice(_applicationConfiguration.SelectedVideoCaptureDevice.MonikerString);
// set NewFrame event handler
_videoSource.NewFrame += video_NewFrame;
// start the video source
_videoSource.Start();
}