private void InitializePlayer()
{
_player = new AVQueuePlayer();
_videoLayer = AVPlayerLayer.FromPlayer(_player);
_videoLayer.Frame = ((VideoSurface)RenderSurface).Frame;
_videoLayer.VideoGravity = AVLayerVideoGravity.ResizeAspect;
((VideoSurface)RenderSurface).Layer.AddSublayer(_videoLayer);
var avSession = AVAudioSession.SharedInstance();
avSession.SetCategory(AVAudioSessionCategory.Playback);
NSError activationError = null;
avSession.SetActive(true, out activationError);
if (activationError != null)
{
this.Log().WarnIfEnabled(() => $"Could not activate audio session: {activationError.LocalizedDescription}");
}
_videoLayer.AddObserver(this, new NSString("videoRect"), NSKeyValueObservingOptions.New | NSKeyValueObservingOptions.Initial, _videoLayer.Handle);
_player.AddObserver(this, new NSString("rate"), NSKeyValueObservingOptions.New | NSKeyValueObservingOptions.Initial, RateObservationContext.Handle);
_itemFailedToPlayToEndTimeNotification = AVPlayerItem.Notifications.ObserveItemFailedToPlayToEndTime((sender, args) => OnMediaFailed(new Exception(args.Error.LocalizedDescription)));
_playbackStalledNotification = AVPlayerItem.Notifications.ObservePlaybackStalled((sender, args) => OnMediaFailed());
_didPlayToEndTimeNotification = AVPlayerItem.Notifications.ObserveDidPlayToEndTime((sender, args) => OnMediaEnded(sender, args));
_periodicTimeObserverObject = _player.AddPeriodicTimeObserver(new CMTime(1, 4), DispatchQueue.MainQueue, delegate
{
if (_player?.CurrentItem == null)
{
return;
}
if (PlaybackSession.PlaybackState == MediaPlaybackState.Playing)
{
PlaybackSession.PositionFromPlayer = Position;
}
});
}
