public LiveDetailPage()
        {
            this.InitializeComponent();
            this.NavigationCacheMode = NavigationCacheMode.Disabled;
            dispRequest = new DisplayRequest();
            DataTransferManager dataTransferManager = DataTransferManager.GetForCurrentView();

            dataTransferManager.DataRequested += DataTransferManager_DataRequested;
            _config = new FFmpegInteropConfig();
            _config.FFmpegOptions.Add("rtsp_transport", "tcp");
            _config.FFmpegOptions.Add("user_agent", "Mozilla/5.0 BiliDroid/1.12.0 ([email protected])");
            _config.FFmpegOptions.Add("referer", "https://live.bilibili.com/");
            //每过2秒就设置焦点
            timer_focus = new DispatcherTimer()
            {
                Interval = TimeSpan.FromSeconds(2)
            };

            timer_focus.Tick += Timer_focus_Tick;
            controlTimer      = new DispatcherTimer()
            {
                Interval = TimeSpan.FromSeconds(1)
            };
            controlTimer.Tick += ControlTimer_Tick;
            settingVM          = new SettingVM();

            liveRoomVM  = new LiveRoomVM();
            mediaPlayer = new MediaPlayer();
            mediaPlayer.PlaybackSession.PlaybackStateChanged     += PlaybackSession_PlaybackStateChanged;
            mediaPlayer.PlaybackSession.BufferingStarted         += PlaybackSession_BufferingStarted;
            mediaPlayer.PlaybackSession.BufferingProgressChanged += PlaybackSession_BufferingProgressChanged;
            mediaPlayer.PlaybackSession.BufferingEnded           += PlaybackSession_BufferingEnded;
            mediaPlayer.MediaOpened   += MediaPlayer_MediaOpened;
            mediaPlayer.MediaEnded    += MediaPlayer_MediaEnded;;
            mediaPlayer.MediaFailed   += MediaPlayer_MediaFailed;
            liveRoomVM.ChangedPlayUrl += LiveRoomVM_ChangedPlayUrl;
            liveRoomVM.AddNewDanmu    += LiveRoomVM_AddNewDanmu;
            liveRoomVM.LotteryEnd     += LiveRoomVM_LotteryEnd;
            this.Loaded   += LiveDetailPage_Loaded;
            this.Unloaded += LiveDetailPage_Unloaded;
            //TODO 快捷键
        }
 private void StopPlay()
 {
     if (mediaPlayer != null)
     {
         mediaPlayer.Pause();
         mediaPlayer.Source = null;
     }
     if (interopMSS != null)
     {
         interopMSS.Dispose();
         interopMSS = null;
     }
     liveRoomVM.Dispose();
     //取消屏幕常亮
     if (dispRequest != null)
     {
         dispRequest = null;
     }
     liveRoomVM = null;
     SetFullScreen(false);
     MiniWidnows(false);
 }