MediaPortalWrapper.InputStream.GetPreferredStreams C# (CSharp) Method

    private void GetPreferredStreams(Dictionary<uint, InputstreamInfo> inputstreamInfos, StreamPreferences preferences)
    {
      List<int> selectedIds = new List<int>();
      // Video
      var videoStreamId = inputstreamInfos.Values.FirstOrDefault(i => i.StreamType == StreamType.Video).StreamId;
      if (videoStreamId != 0)
        selectedIds.Add((int)videoStreamId);

      // Audio, prefer language then multichannel
      var audioStreams = inputstreamInfos.Values.Where(i => i.StreamType == StreamType.Audio).ToList();
      var langStreams = audioStreams.Where(i => i.Language == preferences.ThreeLetterLangCode).ToList();

      // Prefer matching language, then all languages
      foreach (var streams in new[] { langStreams, audioStreams })
      {
        var matchingStreams = preferences.PreferMultiChannel ?
          streams.OrderByDescending(i => i.Channels).ThenBy(i => i.CodecInternalName) :
          streams.OrderBy(CustomChannelCountSorting).ThenBy(i => i.CodecInternalName);

        var audioStream = matchingStreams.Any() ? matchingStreams.First().StreamId : 0;
        if (audioStream != 0)
        {
          selectedIds.Add((int)audioStream);
          break;
        }
      }
      _enabledStreams = selectedIds.ToList();
    }