/// <summary>
/// Frame Process Function called on Image Grabbed Event
/// </summary>
protected override void ProcessFrame(object sender, EventArgs e)
{
//Unsubscribe to stop receiving events
_capture.ImageGrabbed -= ProcessFrame;
try
{
Mat f = new Mat();
_capture.Retrieve(f, 0);
//Get frame from camera
Frame frame = new Frame();
frame.Timestamp = DateTime.Now;
frame.Image = new Image<Gray, byte>(f.Bitmap);
Data = frame;
NotifyAll();
}
catch (Exception ex)
{
Log.Print(String.Format("Failed to deal with frame. Reason: {0}", ex.Message), eCategory.Error, LogTag.IMAGE);
}
finally
{
//Subscribe back to receive events
_capture.ImageGrabbed += ProcessFrame;
}
}
/// <summary>
/// Create exact copy of current frame
/// </summary>
/// <returns>Cloned Frame</returns>
public IFrame Clone()
{
IFrame frameCopy = new Frame();
frameCopy.Timestamp = this.Timestamp;
frameCopy.Image = this.Image.Clone();
return frameCopy;
}
/// <summary>
/// Generate Empty frames in rate of FrameRate set
/// in loop with timestamp and notify observers
/// </summary>
/// <param name="sender">Irrelevant Pamater</param>
/// <param name="e">Irrelevant Pamater</param>
protected override void ProcessFrame(object sender, EventArgs e)
{
while (true)
{
try
{
Thread.Sleep(TimeSpan.FromSeconds(1 / (double)FrameRate));
Frame frame = new Frame();
frame.Timestamp = DateTime.Now;
Data = frame;
NotifyAll();
}
catch (Exception ex)
{
Log.Print(String.Format(
"Error generating frame in demo streamer. Reason: {0}", ex.Message), eCategory.Error, LogTag.IMAGE);
}
}
}