private async void MediaPlayer_PositionChanged(Windows.Media.Playback.MediaPlaybackSession sender, object args)
{
await TrimRange.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
if (sender.Position.TotalMilliseconds >= TrimRange.Maximum *sender.NaturalDuration.TotalMilliseconds)
{
sender.Position = TimeSpan.FromMilliseconds(sender.NaturalDuration.TotalMilliseconds *TrimRange.Minimum);
return;
}
TrimRange.Value = sender.Position.TotalMilliseconds / sender.NaturalDuration.TotalMilliseconds;
});
}
private void PlaybackSession_PlaybackStateChanged(Windows.Media.Playback.MediaPlaybackSession sender, object args)
{
if (sender.PlaybackState == Windows.Media.Playback.MediaPlaybackState.Playing)
{
sender.PlaybackStateChanged -= PlaybackSession_PlaybackStateChanged;
_ = Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
HeroVideo.Opacity = 1;
ProductsViewer.Opacity = 1;
ProductsViewer.Translation = Vector3.Zero;
});
}
}
private async void PlaybackSession_PlaybackStateChanged(Windows.Media.Playback.MediaPlaybackSession sender, object args)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
//播放MV前先检查音乐是否正在播放
if (MusicPage.ThisPage.MediaControl.MediaPlayer.PlaybackSession.PlaybackState == Windows.Media.Playback.MediaPlaybackState.Playing)
{
//直接暂停音乐然后播放MV的话会产生声音的争抢
//此处采用将两个都暂停后再开始播放MV的方法
MVControl.MediaPlayer.Pause();
MusicPage.ThisPage.MediaControl.MediaPlayer.Pause();
MVControl.MediaPlayer.Play();
}
});
}
private async void PlaybackSession_PlaybackStateChanged(Windows.Media.Playback.MediaPlaybackSession sender, object args)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal,
() =>
{
if (mediaPlayer.PlaybackSession.PlaybackState == Windows.Media.Playback.MediaPlaybackState.Playing)
{
ButtonStopPlayer.IsEnabled = true;
}
else
{
ButtonStopPlayer.IsEnabled = false;
}
});
}
private async void PlaybackSession_PlaybackStateChanged(Windows.Media.Playback.MediaPlaybackSession sender, object args)
{
if (!isMediaStarted)
{
if (sender.PlaybackState == Windows.Media.Playback.MediaPlaybackState.Playing)
{
isMediaStarted = true;
await Task.Run(async() =>
{
await dispatcher.RunAsync(CoreDispatcherPriority.High, async() =>
{
var count = 0;
try
{
while (count < actions.Count && mediaPlayerElement.MediaPlayer.PlaybackSession.PlaybackState == Windows.Media.Playback.MediaPlaybackState.Playing)
{
if (ct.IsCancellationRequested)
{
mediaPlayerElement.MediaPlayer.Pause();
ct.ThrowIfCancellationRequested();
}
var mediaAction = actions[count];
if (TimeSpan.Compare(mediaAction.MediaTimeSpan, mediaPlayerElement.MediaPlayer.PlaybackSession.Position) <= 0)
{
Debug.WriteLine("/Count: " + count.ToString() + " /Action: " + mediaAction.MediaScene.CurrentSequence);
var serialTask = serial.SendData(mediaAction.MediaScene);
if (playerType == MediaActionPlayerType.Server)
{
if (previousScene != mediaAction.MediaScene.CurrentScene)
{
previousScene = mediaAction.MediaScene.CurrentScene;
var btTask = btServer.SendMessage(mediaAction.MediaScene);
while (!(serialTask.IsCompleted && btTask.IsCompleted))
{
await Task.Delay(100);
}
}
else
{
while (!serialTask.IsCompleted)
{
await Task.Delay(100);
}
}
}
else
{
while (!serialTask.IsCompleted)
{
await Task.Delay(100);
}
}
count++;
}
await Task.Delay(200);
}
}
catch (OperationCanceledException)
{
return;
}
});
});
}
}
else
{
if (isMediaStarted && sender.PlaybackState != Windows.Media.Playback.MediaPlaybackState.Playing && sender.PlaybackState != Windows.Media.Playback.MediaPlaybackState.Buffering)
{
IsPlaying = false;
isMediaStarted = false;
}
}
}
