Microsoft.PlayerFramework.Adaptive.HLS.HLSPlugin.RefreshStateAsync C# (CSharp) Method

    private async Task RefreshStateAsync()
    {
      await this._MediaPlayer.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
      {
        if (null == this._Controller || !this._Controller.IsValid)
          return;
          try
          {
            // get the active variant stream into a local variable to avoid null references as it's null briefly while switching bitrates
            var activeVariantStream = this._Controller.Playlist.ActiveVariantStream;
            if (null == activeVariantStream)
              return;

            if (null != this._Controller.Playlist && this._Controller.Playlist.IsMaster)
            {
              // value ranging from 0 to 1
              this._MediaPlayer.SignalStrength = (0 == this._Controller.Playlist.MaximumAllowedBitrate) ? 0 :
                  (double)activeVariantStream.Bitrate / this._Controller.Playlist.MaximumAllowedBitrate;

              // HLS has an optional resolution, only set media quality if the HLS stream specifies a resolution.
              if (activeVariantStream.HasResolution)
                this._MediaPlayer.MediaQuality = (720 <= activeVariantStream.VerticalResolution) ?
                    MediaQuality.HighDefinition : MediaQuality.StandardDefinition;
            }
          }
          catch { }
      });
    }