BDInfo.TSStreamFile.CreateStream C# (CSharp) Метод

        private TSStream CreateStream(
            ushort streamPID, 
            byte streamType, 
            List<TSDescriptor> streamDescriptors)
        {
            TSStream stream = null;

            switch ((TSStreamType)streamType)
            {
                case TSStreamType.MVC_VIDEO:
                case TSStreamType.AVC_VIDEO:
                case TSStreamType.MPEG1_VIDEO:
                case TSStreamType.MPEG2_VIDEO:
                case TSStreamType.VC1_VIDEO:
                {
                    stream = new TSVideoStream();
                }
                break;

                case TSStreamType.AC3_AUDIO:
                case TSStreamType.AC3_PLUS_AUDIO:
                case TSStreamType.AC3_PLUS_SECONDARY_AUDIO:
                case TSStreamType.AC3_TRUE_HD_AUDIO:
                case TSStreamType.DTS_AUDIO:
                case TSStreamType.DTS_HD_AUDIO:
                case TSStreamType.DTS_HD_MASTER_AUDIO:
                case TSStreamType.DTS_HD_SECONDARY_AUDIO:
                case TSStreamType.LPCM_AUDIO:
                case TSStreamType.MPEG1_AUDIO:
                case TSStreamType.MPEG2_AUDIO:
                {
                    stream = new TSAudioStream();
                }
                break;

                case TSStreamType.INTERACTIVE_GRAPHICS:
                case TSStreamType.PRESENTATION_GRAPHICS:
                {
                    stream = new TSGraphicsStream();
                }
                break;

                case TSStreamType.SUBTITLE:
                {
                    stream = new TSTextStream();
                }
                break;

                default:
                    break;
            }

            if (stream != null &&
                !Streams.ContainsKey(streamPID))
            {
                stream.PID = streamPID;
                stream.StreamType = (TSStreamType)streamType;
                stream.Descriptors = streamDescriptors;
                Streams[stream.PID] = stream;
            }
            if (!StreamDiagnostics.ContainsKey(streamPID))
            {
                StreamDiagnostics[streamPID] =
                    new List<TSStreamDiagnostics>();
            }

            return stream;
        } 
    }