public static void GenerateThumbnail(MediaViewModel mediaViewModel)
{
switch (mediaViewModel.MediaType)
{
case MediaType.Photo:
ThreadPool.QueueUserWorkItem(delegate { PictureTools.GenerateThumbnailOfPicture(mediaViewModel.AbsoluteURL, mediaViewModel.ID_Media, setImage); });
break;
case MediaType.Video:
ThreadPool.QueueUserWorkItem(delegate { VideoTools.CaptureScreen(mediaViewModel.AbsoluteURL, mediaViewModel.ID_Media, new TimeSpan(0, 0, 30, 0), "Thumbnail", 0.5, null, setImage); });
break;
case MediaType.Musique:
ThreadPool.QueueUserWorkItem(delegate { AudioTools.ReadMP3CoverArt(mediaViewModel.AbsoluteURL, mediaViewModel.ID_Media, setImage); });
break;
case MediaType.Autre:
break;
default:
throw new ArgumentOutOfRangeException();
}
}
/// <summary>
/// Performs processing of the most recent frame from the video feed.
/// This is an Ansyncronous method.
/// </summary>
/// <returns>An Asyncronous <c>Task</c></returns>
private async Task ProcessFrames()
{
if (this.Camera == null)
{
Globals.Log.Error("Camera device not set. Shutting down.");
return;
}
string detectorPath = ConfigurationManager.AppSettings["DetectorPath"];
string basePath = System.IO.Path.GetDirectoryName(ConfigurationManager.AppSettings["CameraSettingsPath"]);
string detectorPathFull = System.IO.Path.Join(basePath, detectorPath);
string protoFile = ConfigurationManager.AppSettings["ProtoFile"];
string detectorModelFile = ConfigurationManager.AppSettings["DetectorModelFile"];
string embeddingModelFile = ConfigurationManager.AppSettings["EmbeddingModelFile"];
string recogniserModelFile = ConfigurationManager.AppSettings["RecogniserModelFile"];
string labelEncoderFile = ConfigurationManager.AppSettings["LabelEncoderFile"];
// build the detector.
DnnCaffeFaceDetector detector = new DnnCaffeFaceDetector(CameraConfig.MinConfidence,
detectorPathFull, protoFile, detectorModelFile, embeddingModelFile, recogniserModelFile,
labelEncoderFile);
// show window.
Cv2.NamedWindow(this.Camera.CameraName, WindowMode.AutoSize);
bool resizeWindow = true;
int frameCenterX = 0;
int frameCenterY = 0;
FacesList facesList;
// loop indefinitely.
while (!this.IsStopping)
{
try
{
int fps = Convert.ToInt32(this.Camera.Fps());
Mat frame = this.Camera.GetCurrentFrame();
if (frame != null)
{
if (this.IsAutoTracking)
{
// Todo: Implement Auto Tracking.
if (frameCenterX == 0)
{
// calculate center of frame.
frameCenterX = frame.Width / 2;
frameCenterY = frame.Height / 2;
}
// process faces in the frame.
frame = detector.Detect(frame, out facesList);
// todo: track highest confidence face
}
// On Screen Display (OSD) variables.
string autoTrackText = "";
string recordingText = "";
string watermarkText = "";
Scalar rgbColor;
// set up text for OSD.
if (this.IsAutoTracking)
{
autoTrackText = "ON";
}
else
{
autoTrackText = "OFF";
}
if (this.Camera.IsContinuousRecording)
{
recordingText = "ON";
}
else
{
recordingText = "OFF";
}
// set up colours for OSD.
if (this.Camera.IsContinuousRecording)
{
rgbColor = new Scalar(0, 0, 255);
}
else if (this.IsAutoTracking)
{
rgbColor = new Scalar(0, 255, 0);
}
else
{
rgbColor = new Scalar(0, 255, 255);
}
watermarkText = string.Format("Auto Tracking: {0} Continuous Recording: {1} FPS: {2}", autoTrackText, recordingText, fps);
Point watermarkLocation = new Point(10, 22);
Cv2.PutText(frame, watermarkText, watermarkLocation, HersheyFonts.HersheyComplex, 0.9, rgbColor);
if (resizeWindow)
{
Cv2.ResizeWindow(this.Camera.CameraName, frame.Width, frame.Height);
resizeWindow = false;
}
Cv2.ImShow(this.Camera.CameraName, frame);
}
int key = Cv2.WaitKeyEx((int)(1000 / fps));
if (key == 'q')
{
break;
}
switch (key)
{
case 2490368: // Up Arrow Key
Camera.MoveUp(this.ptzLock);
break;
case 2621440: // Down Arrow Key
Camera.MoveDown(this.ptzLock);
break;
case 2424832: // Left Arrow Key
Camera.MoveLeft(this.ptzLock);
break;
case 2555904: // Right Arrow Key
Camera.MoveRight(this.ptzLock);
break;
case 'z':
Camera.ZoomIn(this.ptzLock);
break;
case 'x':
Camera.ZoomOut(this.ptzLock);
break;
case 'a':
this.IsAutoTracking = VideoTools.FlipBool(this.IsAutoTracking);
if (!this.IsAutoTracking)
{
Camera.StopPtz();
}
break;
case 'c':
Camera.IsContinuousRecording = VideoTools.FlipBool(Camera.IsContinuousRecording);
break;
}
}
catch (Exception detail)
{
Globals.Log.Error(detail);
}
}
}