protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
_endPostionBlock = GetTemplateChild("EndPositionBlock") as TextBlock;
_startPostionBlock = GetTemplateChild("StartPositionBlock") as TextBlock;
_mediaSlider = GetTemplateChild("MediaSlider") as Slider;
_playButton = GetTemplateChild("PlayButton") as AppBarButton;
_playButton.Click += ((sender, args) =>
{
if (FrameMediaPlayer != null)
{
if (FrameMediaPlayer.PlaybackSession.PlaybackState == MediaPlaybackState.Paused)
{
FrameMediaPlayer.Play();
}
else
{
if (FrameMediaPlayer.PlaybackSession.CanPause)
{
FrameMediaPlayer.Pause();
}
}
}
});
//_mediaSlider.ThumbToolTipValueConverter = PositionConverter;
RenderControl();
BindingViewModel();
DispatcherTimerSetup();
}
/// <summary>
/// 从文件构造该类
/// </summary>
/// <param name="mediaFile"></param>
/// <returns></returns>
static async Task <FrameMediaPlayer> CreateFromStorageFileAsync(IStorageFile mediaFile)
{
var source = MediaSource.CreateFromStorageFile(mediaFile);
FrameMediaPlayer frameMediaPlayer = new FrameMediaPlayer(source);
await frameMediaPlayer.CalculateFrameRateFromFileAsync(mediaFile).ConfigureAwait(false);
return(frameMediaPlayer);
}
private async void MediaPlayer_MediaOpened(FrameMediaPlayer sender, object args)
{
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
BindingViewModel();
MediaPlayerViewModel.LoadMediaPlayer(sender);
System.Diagnostics.Debug.WriteLine("Media Opened");
});
}
private async void MediaPlayer_MediaEnded(FrameMediaPlayer sender, object args)
{
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
MediaPlayerViewModel.Position = MediaPlayerViewModel.Duration;
});
System.Diagnostics.Debug.WriteLine("Media is Ended.");
}
private async void MediaPlayer_CurrentStateChanged(FrameMediaPlayer sender, object args)
{
switch (sender.PlaybackSession.PlaybackState)
{
case MediaPlaybackState.Playing:
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
if (_playButton != null)
{
_playButton.Icon = new SymbolIcon(Symbol.Pause);
}
sender.PlaybackSession.PositionChanged -= PlaybackSession_PositionChanged;
dispatcherTimer.Start();
});
break;
case MediaPlaybackState.Paused:
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
if (_playButton != null)
{
_playButton.Icon = new SymbolIcon(Symbol.Play);
}
dispatcherTimer.Stop();
sender.PlaybackSession.PositionChanged -= PlaybackSession_PositionChanged;
sender.PlaybackSession.PositionChanged += PlaybackSession_PositionChanged;
});
break;
case MediaPlaybackState.None:
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
if (_playButton != null)
{
_playButton.Icon = new SymbolIcon(Symbol.Play);
}
dispatcherTimer.Stop();
sender.PlaybackSession.PositionChanged -= PlaybackSession_PositionChanged;
sender.PlaybackSession.PositionChanged += PlaybackSession_PositionChanged;
});
break;
}
}
private static void OnMediaPlayerChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var transportControl = d as FramedMediaTransportControls;
FrameMediaPlayer newMediaPlayer = e.NewValue as FrameMediaPlayer;
FrameMediaPlayer oldMediaPlayer = e.OldValue as FrameMediaPlayer;
transportControl.FrameMediaPlayer = newMediaPlayer;
if (oldMediaPlayer != null)
{
transportControl.UnRegeisterMediaPlayerEvent(oldMediaPlayer);
}
if (newMediaPlayer != null)
{
transportControl.RegisterMediaPlayerEvent(newMediaPlayer);
}
}
private void UnRegeisterMediaPlayerEvent(FrameMediaPlayer mediaPlayer)
{
mediaPlayer.MediaOpened -= MediaPlayer_MediaOpened;
}
private void RegisterMediaPlayerEvent(FrameMediaPlayer mediaPlayer)
{
mediaPlayer.MediaOpened += MediaPlayer_MediaOpened;
mediaPlayer.CurrentStateChanged += MediaPlayer_CurrentStateChanged;
mediaPlayer.MediaEnded += MediaPlayer_MediaEnded;
}