void VideoSource_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs)
{
if(OnCameraFrame != null)
OnCameraFrame(Image.Clone(eventArgs.Frame));
if (skipFrames < Global.AppSettings.SkipFrames)
{
skipFrames++;
return;
}
else
skipFrames = 0;
frame = (Bitmap)eventArgs.Frame.Clone();
if (detector == null || tracker == null || restartDetector != null)
{
if (restartDetector != null)
detector = restartDetector;
else
detector = DetectorManager.LoadDetectorWithoutExceptions(DetectorManager.DetectorDirectory + "\\" + Global.AppSettings.DetectorName + ".dll");
if (detector == null)
detector = new Detector1();
detector.Initialize(Image.Clone(frame));
tracker = new Tracker1();
restartDetector = null;
}
try
{
detector.ProcessFrame(ref frame);
}
catch(Exception exc)
{
if (detector.GetType() != typeof(Detector1))
SetDetector(new Detector1());
else
throw exc;
return;
}
if (OnProcessedFrame != null)
OnProcessedFrame(Image.Clone(frame));
List<Blob> trackedBlobs = tracker.ProcessBlobs(detector.GetBlobRectangles());
if (OnBlobsTracked != null)
OnBlobsTracked(trackedBlobs);
Bitmap processedCameraFrame;
if (OnProcessedFrame != null)
{
processedCameraFrame = frame.Clone(new Rectangle(0, 0, frame.Size.Width, frame.Size.Height), System.Drawing.Imaging.PixelFormat.Format32bppArgb);
Graphics g = Graphics.FromImage(processedCameraFrame);
Font idFont = new Font("Arial", processedCameraFrame.Width / 20);
//Draw rectangles to original camera frame
foreach (Blob blob in trackedBlobs)
{
if (!blob.Active)
continue;
g.DrawRectangle(Pens.Yellow, blob.Rect);
g.FillRectangle(new SolidBrush(Color.FromArgb(150, Color.DarkRed)),
new Rectangle(blob.Rect.X, blob.Rect.Y, (int)g.MeasureString(blob.Id.ToString(), idFont).Width, (int)idFont.GetHeight()));
g.DrawString(blob.Id.ToString(), idFont, Brushes.White, new PointF(blob.Rect.X, blob.Rect.Y));
}
if (OnProcessedCameraFrame != null) //this is a different thread, so it might have changed in the meantime (race condition)
OnProcessedCameraFrame(processedCameraFrame);
}
if (NewFrame != null)
{
List<Contact> contacts = new List<Contact>();
foreach (Blob blob in trackedBlobs)
{
Point w2s = WebcamToScreen(blob);
//Console.WriteLine(w2s.ToString());
Contact c = new Contact(blob.Id, blob.ContactState, new System.Windows.Point(w2s.X, w2s.Y), blob.Rect.Width, blob.Rect.Height);
contacts.Add(c);
}
NewFrame(this, new NewFrameEventArgs(Stopwatch.GetTimestamp(), contacts, null));
contacts.Clear();
}
frame.Dispose();
}
/// <summary>Detector will be restarted on next frame.</summary>
public void RestartDetector()
{
restartDetector = detector;
}
public void SetDetector(DetectorBase detector)
{
restartDetector = detector;
}
public void Initialize(bool loadAppSettings = true)
{
if (camera != null && camera.IsRunning)
Stop();
if(loadAppSettings)
Global.AppSettings.Load();
camera = CameraManager.GetCamera(Global.AppSettings.Camera);
if (camera != null)
{
if (Global.AppSettings.CameraMode < camera.VideoCapabilities.Length)
{
camera.DesiredFrameSize = camera.VideoCapabilities[Global.AppSettings.CameraMode].FrameSize;
camera.DesiredFrameRate = camera.VideoCapabilities[Global.AppSettings.CameraMode].MaxFrameRate;
}
}
if (camera == null)
{
camera = CameraManager.GetCamera(0);
Global.AppSettings.Camera = 0;
}
if (camera == null)
{
MessageBox.Show("Er is geen (standaard) camera gevonden. Driver wordt nu afgesloten.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
Application.Exit();
}
detector = null;
restartDetector = null;
tracker = null;
skipFrames = Global.AppSettings.SkipFrames;
}