public override Task StartConvertingAsyncTask()
{
return Task.Run(() =>
{
Encoder = new AnimatedGifEncoder();
_mediaDetector = new MediaDetector();
_mediaDetector.LoadMedia(Path);
ConvertingProgressBar.Dispatcher.Invoke(
DispatcherPriority.Normal,
new Action(() =>
{
ConvertingProgressBar.Value = 0;
ConvertingProgressBar.Maximum = (To - From) * Fps / 1000;
}));
Encoder.Start(GifPath);
Encoder.SetDelay(Ival);
Encoder.SetRepeat(0);
for (var i = From; i < To; i += Ival)
{
var frame = GetFrame(TimeSpan.FromMilliseconds(i));
if (GifSize.Height != -1 && GifSize.Width != -1)
frame = ResizeImage(frame);
AddFrame(frame);
ConvertingProgressBar.Dispatcher.Invoke(
DispatcherPriority.Normal,
new Action(() =>
{
ConvertingProgressBar.Value++;
}));
}
Encoder.Finish();
});
}
public MediaDetectorElement()
{
m_frames = new ObservableCollection<VideoFrame>();
Frames = new ReadOnlyObservableCollection<VideoFrame>(m_frames);
m_mediaDetector = CreateMediaDetector();
Loaded += MediaDetectorElement_Loaded;
}
private static MediaDetector CreateMediaDetector()
{
MediaDetector detector = null;
/* The reset event will block our thread while
* we create an intialize the player */
var reset = new ManualResetEvent(false);
/* We need to create a new thread for our Dispatcher */
var t = new Thread((ThreadStart) delegate
{
detector = new MediaDetector();
/* We queue up a method to execute
* when the Dispatcher is ran.
* This will wake up the calling thread
* that has been blocked by the reset event */
detector.Dispatcher.Invoke((Action) (() => reset.Set()));
Dispatcher.Run();
})
{
Name = "MediaDetector",
IsBackground = true
};
t.SetApartmentState(ApartmentState.STA);
/* Starts the thread and creates the object */
t.Start();
/* We wait until our object is created and
* the new Dispatcher is running */
reset.WaitOne();
return detector;
}
