private void OnLoaded(object sender, RoutedEventArgs e)
{
if (_mediaElementThreadInfo != null)
{
return;
}
_mediaElementThreadInfo = MediaElementThreadFactory.CreateMediaElementsOnWorkerThread(CreateBusyIndicator);
Child = _mediaElementThreadInfo.HostVisual;
}
private void OnUnloaded(object sender, RoutedEventArgs e)
{
if (_ignoreUnloadedEventCounter > 0)
{
_ignoreUnloadedEventCounter--;
return;
}
if (_mediaElementThreadInfo != null)
{
_mediaElementThreadInfo.Dispose();
_mediaElementThreadInfo = null;
}
}
/// <summary>
/// Creates the media element on worker thread.
/// <para />
/// Note that the <see cref="MediaElementThreadInfo"/> implements <see cref="IDisposable"/>.
/// </summary>
/// <returns>The media element thread info.</returns>
public static MediaElementThreadInfo CreateMediaElementsOnWorkerThread(Func <Visual> createVisual)
{
Argument.IsNotNull("createVisual", createVisual);
var thread = new Thread(WorkerThread);
thread.SetApartmentState(ApartmentState.STA);
thread.IsBackground = true;
var mediaElementThreadInfo = new MediaElementThreadInfo(new HostVisual(), createVisual, thread);
thread.Start(mediaElementThreadInfo);
// Wait for the element to be created by the thread
AutoResetEvent.WaitOne();
return(mediaElementThreadInfo);
}