//
// Not strictly necessary, but the movie might be very large, so we might
// as well help the system by disposing before the GC kicks-in
//
protected override void Dispose(bool disposing)
{
if (captureSession != null)
{
captureSession.StopRunning();
}
if (captureInput != null && captureInput.Device != null && captureInput.Device.IsOpen)
{
captureInput.Device.Close();
}
if (disposing)
{
movie.Dispose();
captureSession.Dispose();
captureInput.Dispose();
decompressedVideo.Dispose();
}
base.Dispose(disposing);
}
public override void WindowControllerDidLoadNib(NSWindowController windowController)
{
base.WindowControllerDidLoadNib(windowController);
// A reference to the window controller must be kept on the managed side
// to keep the object from being GC'd so that the delegates below resolve.
// Don't remove unless the framework is updated to track the reference.
this.windowController = windowController;
NSError err;
windowController.Window.WillClose += delegate {
if (captureSession != null)
{
captureSession.StopRunning();
}
var dev = captureInput.Device;
if (dev.IsOpen)
{
dev.Close();
}
};
// Create a movie, and store the information in memory on an NSMutableData
movie = new QTMovie(new NSMutableData(1), out err);
if (movie == null)
{
NSAlert.WithError(err).RunModal();
return;
}
movieView.Movie = movie;
// Find video device
captureSession = new QTCaptureSession();
var device = QTCaptureDevice.GetDefaultInputDevice(QTMediaType.Video);
if (!device.Open(out err))
{
NSAlert.WithError(err).RunModal();
return;
}
// Add device input
captureInput = new QTCaptureDeviceInput(device);
if (!captureSession.AddInput(captureInput, out err))
{
NSAlert.WithError(err).RunModal();
return;
}
// Create decompressor for video output, to get raw frames
decompressedVideo = new QTCaptureDecompressedVideoOutput();
decompressedVideo.DidOutputVideoFrame += delegate(object sender, QTCaptureVideoFrameEventArgs e) {
lock (this){
currentImage = e.VideoFrame;
}
};
if (!captureSession.AddOutput(decompressedVideo, out err))
{
NSAlert.WithError(err).RunModal();
return;
}
// Activate preview
captureView.CaptureSession = captureSession;
// Start running.
captureSession.StartRunning();
}
