private void Connect2()
{
// Second part of Connect function.
// The function is split because the first part might need to be run repeatedly and from non UI thread,
// while this part must run on the UI thread.
metadata.ImageSize = new Size(imageDescriptor.Width, imageDescriptor.Height);
metadata.PostSetupCapture();
AllocateDelayer();
// Start recorder thread.
// It will be dormant until recording is started but it has the same lifetime as the pipeline.
consumerRecord = new ConsumerMJPEGRecorder();
recorderThread = new Thread(consumerRecord.Run)
{
IsBackground = true
};
recorderThread.Name = consumerRecord.GetType().Name;
recorderThread.Start();
// Make sure the viewport will not use the bitmap allocated by the consumerDisplay as it is about to be disposed.
viewportController.ForgetBitmap();
viewportController.InitializeDisplayRectangle(cameraSummary.DisplayRectangle, new Size(imageDescriptor.Width, imageDescriptor.Height));
// Initialize pipeline.
pipelineManager.Connect(imageDescriptor, (IFrameProducer)cameraGrabber, consumerDisplay, consumerRecord);
nonGrabbingInteractionTimer.Enabled = false;
if (!PreferencesManager.CapturePreferences.UseCameraSignalSynchronization)
{
double framerate = PreferencesManager.CapturePreferences.DisplaySynchronizationFramerate;
if (framerate == 0)
{
framerate = 25;
}
grabTimer.Interval = (int)(1000.0 / framerate);
grabTimer.Enabled = true;
}
cameraGrabber.GrabbingStatusChanged += Grabber_GrabbingStatusChanged;
cameraGrabber.Start();
UpdateTitle();
cameraConnected = true;
}
private void InitializeDisplayRectangle(Size imgSize, long timestamp)
{
int scale = 2;
// center around current point with zoom.
PointF position = track.GetPosition(timestamp);
PointF normalizedPosition = new PointF(position.X / imgSize.Width, position.Y / imgSize.Height);
SizeF normalizedHostSize = new SizeF((float)pnlViewport.Width / imgSize.Width, (float)pnlViewport.Height / imgSize.Height);
PointF normalizedHostCenter = new PointF(normalizedHostSize.Width / 2, normalizedHostSize.Height / 2);
PointF normalizedDisplayLocation = new PointF(normalizedHostCenter.X - (normalizedPosition.X * scale), normalizedHostCenter.Y - (normalizedPosition.Y * scale));
PointF topLeft = new PointF(normalizedDisplayLocation.X * imgSize.Width, normalizedDisplayLocation.Y * imgSize.Height);
Size fullSize = new Size(imgSize.Width * scale, imgSize.Height * scale);
Rectangle display = new Rectangle((int)topLeft.X, (int)topLeft.Y, fullSize.Width, fullSize.Height);
viewportController.InitializeDisplayRectangle(display, imgSize);
}
