ReadBytes() public method

public ReadBytes ( int bytes ) : byte[]
bytes int
return byte[]
        public static void Scan(
            TSAudioStream stream,
            TSStreamBuffer buffer,
            ref string tag)
        {
            if (stream.IsInitialized)
            {
                return;
            }

            byte[] header = buffer.ReadBytes(4);
            int    flags  = (header[2] << 8) + header[3];

            switch ((flags & 0xF000) >> 12)
            {
            case 1:     // 1/0/0
                stream.ChannelCount = 1;
                stream.LFE          = 0;
                break;

            case 3:     // 2/0/0
                stream.ChannelCount = 2;
                stream.LFE          = 0;
                break;

            case 4:     // 3/0/0
                stream.ChannelCount = 3;
                stream.LFE          = 0;
                break;

            case 5:     // 2/1/0
                stream.ChannelCount = 3;
                stream.LFE          = 0;
                break;

            case 6:     // 3/1/0
                stream.ChannelCount = 4;
                stream.LFE          = 0;
                break;

            case 7:     // 2/2/0
                stream.ChannelCount = 4;
                stream.LFE          = 0;
                break;

            case 8:     // 3/2/0
                stream.ChannelCount = 5;
                stream.LFE          = 0;
                break;

            case 9:     // 3/2/1
                stream.ChannelCount = 5;
                stream.LFE          = 1;
                break;

            case 10:     // 3/4/0
                stream.ChannelCount = 7;
                stream.LFE          = 0;
                break;

            case 11:     // 3/4/1
                stream.ChannelCount = 7;
                stream.LFE          = 1;
                break;

            default:
                stream.ChannelCount = 0;
                stream.LFE          = 0;
                break;
            }

            switch ((flags & 0xC0) >> 6)
            {
            case 1:
                stream.BitDepth = 16;
                break;

            case 2:
                stream.BitDepth = 20;
                break;

            case 3:
                stream.BitDepth = 24;
                break;

            default:
                stream.BitDepth = 0;
                break;
            }

            switch ((flags & 0xF00) >> 8)
            {
            case 1:
                stream.SampleRate = 48000;
                break;

            case 4:
                stream.SampleRate = 96000;
                break;

            case 5:
                stream.SampleRate = 192000;
                break;

            default:
                stream.SampleRate = 0;
                break;
            }

            stream.BitRate = (uint)
                             (stream.SampleRate * stream.BitDepth *
                              (stream.ChannelCount + stream.LFE));

            stream.IsVBR         = false;
            stream.IsInitialized = true;
        }
Example #2
0
        public void Scan(TSAudioStream stream, TSStreamBuffer buffer, ref string tag, long?bitrate)
        {
            if (stream.IsInitialized)
            {
                return;
            }

            var sync = buffer.ReadBytes(2);

            if (sync == null || sync[0] != 0x0B || sync[1] != 0x77)
            {
                return;
            }

            var secondFrame = stream.ChannelCount > 0;

            uint srCode;
            uint frameSize     = 0;
            uint frameSizeCode = 0;
            uint channelMode;
            uint lfeOn;
            uint dialNorm    = 0;
            uint dialNormExt = 0;
            uint numBlocks   = 0;

            var hdr  = buffer.ReadBytes(4);
            var bsid = (uint)((hdr[3] & 0xF8) >> 3);

            buffer.Seek(-4, SeekOrigin.Current);
            if (bsid <= 10)
            {
                buffer.BSSkipBytes(2);
                srCode        = buffer.ReadBits2(2);
                frameSizeCode = buffer.ReadBits2(6);
                bsid          = buffer.ReadBits2(5);
                buffer.BSSkipBits(3);

                channelMode = buffer.ReadBits2(3);
                if ((channelMode & 0x1) > 0 && channelMode != 0x1)
                {
                    buffer.BSSkipBits(2);
                }
                if ((channelMode & 0x4) > 0)
                {
                    buffer.BSSkipBits(2);
                }
                if (channelMode == 0x2)
                {
                    var dsurmod = buffer.ReadBits2(2);
                    if (dsurmod == 0x2)
                    {
                        stream.AudioMode = TSAudioMode.Surround;
                    }
                }

                lfeOn    = buffer.ReadBits2(1);
                dialNorm = buffer.ReadBits2(5);
                if (buffer.ReadBool())
                {
                    buffer.BSSkipBits(8);
                }
                if (buffer.ReadBool())
                {
                    buffer.BSSkipBits(8);
                }
                if (buffer.ReadBool())
                {
                    buffer.BSSkipBits(7);
                }
                if (channelMode == 0)
                {
                    buffer.BSSkipBits(5);
                    if (buffer.ReadBool())
                    {
                        buffer.BSSkipBits(8);
                    }
                    if (buffer.ReadBool())
                    {
                        buffer.BSSkipBits(8);
                    }
                    if (buffer.ReadBool())
                    {
                        buffer.BSSkipBits(7);
                    }
                }

                buffer.BSSkipBits(2);
                if (bsid == 6)
                {
                    if (buffer.ReadBool())
                    {
                        buffer.BSSkipBits(14);
                    }
                    if (buffer.ReadBool())
                    {
                        uint dsurexmod    = buffer.ReadBits2(2);
                        uint dheadphonmod = buffer.ReadBits2(2);
                        if (dheadphonmod == 0x2)
                        {
                            // TODO
                        }

                        buffer.BSSkipBits(10);
                        if (dsurexmod == 2)
                        {
                            stream.AudioMode = TSAudioMode.Extended;
                        }
                    }
                }
            }
            else
            {
                uint frameType = buffer.ReadBits2(2);
                buffer.BSSkipBits(3);

                frameSize = (buffer.ReadBits4(11) + 1) << 1;

                srCode = buffer.ReadBits2(2);
                if (srCode == 3)
                {
                    srCode    = buffer.ReadBits2(2);
                    numBlocks = 3;
                }
                else
                {
                    numBlocks = buffer.ReadBits2(2);
                }

                channelMode = buffer.ReadBits2(3);
                lfeOn       = buffer.ReadBits2(1);
                bsid        = buffer.ReadBits2(5);
                dialNormExt = buffer.ReadBits2(5);

                if (buffer.ReadBool())
                {
                    buffer.BSSkipBits(8);
                }
                if (channelMode == 0) // 1+1
                {
                    buffer.BSSkipBits(5);
                    if (buffer.ReadBool())
                    {
                        buffer.BSSkipBits(8);
                    }
                }

                if (frameType == 1) //dependent stream
                {
                    stream.CoreStream            = (TSAudioStream)stream.Clone();
                    stream.CoreStream.StreamType = TSStreamType.AC3_AUDIO;

                    if (buffer.ReadBool()) //channel remapping
                    {
                        var chanmap = buffer.ReadBits4(16);

                        stream.ChannelCount  = stream.CoreStream.ChannelCount;
                        stream.ChannelCount += AC3ChanMap((int)chanmap);
                        lfeOn = (uint)stream.CoreStream.LFE;
                    }
                }

                var emdfFound = false;

                do
                {
                    var emdfSync = buffer.ReadBits4(16);
                    if (emdfSync == 0x5838)
                    {
                        emdfFound = true;
                        break;
                    }

                    buffer.Seek(-2, SeekOrigin.Current);
                    buffer.BSSkipBits(1); // skip 1 bit
                } while (buffer.Position < buffer.Length);

                if (emdfFound)
                {
                    var emdfContainerSize = buffer.ReadBits4(16);
                    var remainAfterEmdf   = buffer.DataBitStreamRemain() - emdfContainerSize * 8;

                    uint emdfVersion = buffer.ReadBits2(2); //emdf_version
                    if (emdfVersion == 3)
                    {
                        emdfVersion += buffer.ReadBits2(2);
                    }

                    if (emdfVersion > 0)
                    {
                        buffer.BSSkipBits((int)(buffer.DataBitStreamRemain() - remainAfterEmdf));
                    }
                    else
                    {
                        var temp = buffer.ReadBits2(3);
                        if (temp == 0x7)
                        {
                            buffer.BSSkipBits(2);              //skip 3 bits
                        }
                        var emdfPayloadID = buffer.ReadBits2(5);

                        if (emdfPayloadID > 0 && emdfPayloadID < 16)
                        {
                            if (emdfPayloadID == 0x1F)
                            {
                                buffer.BSSkipBits(5);                        //skip 5 bits
                            }
                            EmdfPayloadConfig(buffer);

                            var emdfPayloadSize = buffer.ReadBits2(8) * 8;
                            buffer.BSSkipBits(emdfPayloadSize + 1);
                        }

                        while ((emdfPayloadID = buffer.ReadBits2(5)) != 14 && buffer.Position < buffer.Length)
                        {
                            if (emdfPayloadID == 0x1F)
                            {
                                buffer.BSSkipBits(5);                        //skip 5 bits
                            }
                            EmdfPayloadConfig(buffer);

                            var emdfPayloadSize = buffer.ReadBits2(8) * 8;
                            buffer.ReadBits4(emdfPayloadSize + 1);
                        }

                        if (buffer.Position < buffer.Length && emdfPayloadID == 14)
                        {
                            EmdfPayloadConfig(buffer);

                            buffer.BSSkipBits(12);

                            uint jocNumObjectsBits = buffer.ReadBits2(6);

                            if (jocNumObjectsBits > 0)
                            {
                                stream.HasExtensions = true;
                            }
                        }
                    }
                }
            }

            if (channelMode < 8 && stream.ChannelCount == 0)
            {
                stream.ChannelCount = AC3Channels[channelMode];
            }

            if (stream.AudioMode == TSAudioMode.Unknown)
            {
                switch (channelMode)
                {
                case 0:     // 1+1
                    stream.AudioMode = TSAudioMode.DualMono;
                    break;

                case 2:     // 2/0
                    stream.AudioMode = TSAudioMode.Stereo;
                    break;

                default:
                    stream.AudioMode = TSAudioMode.Unknown;
                    break;
                }
            }

            switch (srCode)
            {
            case 0:
                stream.SampleRate = 48000;
                break;

            case 1:
                stream.SampleRate = 44100;
                break;

            case 2:
                stream.SampleRate = 32000;
                break;

            default:
                stream.SampleRate = 0;
                break;
            }

            if (bsid <= 10)
            {
                var fSize = frameSizeCode >> 1;
                if (fSize < 19)
                {
                    stream.BitRate = AC3Bitrate[fSize] * 1000;
                }
            }
            else
            {
                stream.BitRate = (long)(4.0 * frameSize * stream.SampleRate / (numBlocks * 256));
                if (stream.CoreStream != null)
                {
                    stream.BitRate += stream.CoreStream.BitRate;
                }
            }

            stream.LFE = (int)lfeOn;
            if (stream.StreamType != TSStreamType.AC3_PLUS_SECONDARY_AUDIO)
            {
                if (stream.StreamType == TSStreamType.AC3_PLUS_AUDIO && bsid == 6 || stream.StreamType == TSStreamType.AC3_AUDIO)
                {
                    stream.DialNorm = (int)dialNorm * -1;
                }
                else if (stream.StreamType == TSStreamType.AC3_PLUS_AUDIO && secondFrame)
                {
                    stream.DialNorm = (int)dialNormExt * -1;
                }
            }

            stream.IsVBR = false;
            if (stream.StreamType == TSStreamType.AC3_PLUS_AUDIO && bsid == 6 && !secondFrame)
            {
                stream.IsInitialized = false;
            }
            else
            {
                stream.IsInitialized = true;
            }
        }
Example #3
0
        public static void Scan(
            TSAudioStream stream,
            TSStreamBuffer buffer,
            ref string tag)
        {
            if (stream.IsInitialized) return;

            byte[] header = buffer.ReadBytes(4);
            int flags = (header[2] << 8) + header[3];

            switch ((flags & 0xF000) >> 12)
            {
                case 1: // 1/0/0
                    stream.ChannelCount = 1;
                    stream.LFE = 0;
                    break;
                case 3: // 2/0/0
                    stream.ChannelCount = 2;
                    stream.LFE = 0;
                    break;
                case 4: // 3/0/0
                    stream.ChannelCount = 3;
                    stream.LFE = 0;
                    break;
                case 5: // 2/1/0
                    stream.ChannelCount = 3;
                    stream.LFE = 0;
                    break;
                case 6: // 3/1/0
                    stream.ChannelCount = 4;
                    stream.LFE = 0;
                    break;
                case 7: // 2/2/0
                    stream.ChannelCount = 4;
                    stream.LFE = 0;
                    break;
                case 8: // 3/2/0
                    stream.ChannelCount = 5;
                    stream.LFE = 0;
                    break;
                case 9: // 3/2/1
                    stream.ChannelCount = 5;
                    stream.LFE = 1;
                    break;
                case 10: // 3/4/0
                    stream.ChannelCount = 7;
                    stream.LFE = 0;
                    break;
                case 11: // 3/4/1
                    stream.ChannelCount = 7;
                    stream.LFE = 1;
                    break;
                default:
                    stream.ChannelCount = 0;
                    stream.LFE = 0;
                    break;
            }

            switch ((flags & 0xC0) >> 6)
            {
                case 1:
                    stream.BitDepth = 16;
                    break;
                case 2:
                    stream.BitDepth = 20;
                    break;
                case 3:
                    stream.BitDepth = 24;
                    break;
                default:
                    stream.BitDepth = 0;
                    break;
            }

            switch ((flags & 0xF00) >> 8)
            {
                case 1:
                    stream.SampleRate = 48000;
                    break;
                case 4:
                    stream.SampleRate = 96000;
                    break;
                case 5:
                    stream.SampleRate = 192000;
                    break;
                default:
                    stream.SampleRate = 0;
                    break;
            }

            stream.BitRate = (uint)
                (stream.SampleRate * stream.BitDepth *
                 (stream.ChannelCount + stream.LFE));

            stream.IsVBR = false;
            stream.IsInitialized = true;
        }
Example #4
0
        public static void Scan(
            TSAudioStream stream,
            TSStreamBuffer buffer,
            ref string tag)
        {
            if (stream.IsInitialized) return;

            byte[] sync = buffer.ReadBytes(2);
            if (sync == null ||
                sync[0] != 0x0B ||
                sync[1] != 0x77)
            {
                return;
            }

            int sr_code = 0;
            int frame_size = 0;
            int frame_size_code = 0;
            int channel_mode = 0;
            int lfe_on = 0;
            int dial_norm = 0;
            int num_blocks = 0;

            byte[] hdr = buffer.ReadBytes(4);
            int bsid = (hdr[3] & 0xF8) >> 3;
            buffer.Seek(-4, SeekOrigin.Current);
            if (bsid <= 10)
            {
                byte[] crc = buffer.ReadBytes(2);
                sr_code = buffer.ReadBits(2);
                frame_size_code = buffer.ReadBits(6);
                bsid = buffer.ReadBits(5);
                int bsmod = buffer.ReadBits(3);

                channel_mode = buffer.ReadBits(3);
                int cmixlev = 0;
                if (((channel_mode & 0x1) > 0) && (channel_mode != 0x1))
                {
                    cmixlev = buffer.ReadBits(2);
                }
                int surmixlev = 0;
                if ((channel_mode & 0x4) > 0)
                {
                    surmixlev = buffer.ReadBits(2);
                }
                int dsurmod = 0;
                if (channel_mode == 0x2)
                {
                    dsurmod = buffer.ReadBits(2);
                    if (dsurmod == 0x2)
                    {
                        stream.AudioMode = TSAudioMode.Surround;
                    }
                }
                lfe_on = buffer.ReadBits(1);
                dial_norm = buffer.ReadBits(5);
                int compr = 0;
                if (1 == buffer.ReadBits(1))
                {
                    compr = buffer.ReadBits(8);
                }
                int langcod = 0;
                if (1 == buffer.ReadBits(1))
                {
                    langcod = buffer.ReadBits(8);
                }
                int mixlevel = 0;
                int roomtyp = 0;
                if (1 == buffer.ReadBits(1))
                {
                    mixlevel = buffer.ReadBits(5);
                    roomtyp = buffer.ReadBits(2);
                }
                if (channel_mode == 0)
                {
                    int dialnorm2 = buffer.ReadBits(5);
                    int compr2 = 0;
                    if (1 == buffer.ReadBits(1))
                    {
                        compr2 = buffer.ReadBits(8);
                    }
                    int langcod2 = 0;
                    if (1 == buffer.ReadBits(1))
                    {
                        langcod2 = buffer.ReadBits(8);
                    }
                    int mixlevel2 = 0;
                    int roomtyp2 = 0;
                    if (1 == buffer.ReadBits(1))
                    {
                        mixlevel2 = buffer.ReadBits(5);
                        roomtyp2 = buffer.ReadBits(2);
                    }
                }
                int copyrightb = buffer.ReadBits(1);
                int origbs = buffer.ReadBits(1);
                if (bsid == 6)
                {
                    if (1 == buffer.ReadBits(1))
                    {
                        int dmixmod = buffer.ReadBits(2);
                        int ltrtcmixlev = buffer.ReadBits(3);
                        int ltrtsurmixlev = buffer.ReadBits(3);
                        int lorocmixlev = buffer.ReadBits(3);
                        int lorosurmixlev = buffer.ReadBits(3);
                    }
                    if (1 == buffer.ReadBits(1))
                    {
                        int dsurexmod = buffer.ReadBits(2);
                        int dheadphonmod = buffer.ReadBits(2);
                        if (dheadphonmod == 0x2)
                        {
                            // TODO
                        }
                        int adconvtyp = buffer.ReadBits(1);
                        int xbsi2 = buffer.ReadBits(8);
                        int encinfo = buffer.ReadBits(1);
                        if (dsurexmod == 2)
                        {
                            stream.AudioMode = TSAudioMode.Extended;
                        }
                    }
                }
            }
            else
            {
                int frame_type = buffer.ReadBits(2);
                int substreamid = buffer.ReadBits(3);
                frame_size = (buffer.ReadBits(11) + 1) << 1;

                sr_code = buffer.ReadBits(2);
                if (sr_code == 3)
                {
                    sr_code = buffer.ReadBits(2);
                }
                else
                {
                    num_blocks = buffer.ReadBits(2);
                }
                channel_mode = buffer.ReadBits(3);
                lfe_on = buffer.ReadBits(1);
            }

            switch (channel_mode)
            {
                case 0: // 1+1
                    stream.ChannelCount = 2;
                    if (stream.AudioMode == TSAudioMode.Unknown)
                    {
                        stream.AudioMode = TSAudioMode.DualMono;
                    }
                    break;
                case 1: // 1/0
                    stream.ChannelCount = 1;
                    break;
                case 2: // 2/0
                    stream.ChannelCount = 2;
                    if (stream.AudioMode == TSAudioMode.Unknown)
                    {
                        stream.AudioMode = TSAudioMode.Stereo;
                    }
                    break;
                case 3: // 3/0
                    stream.ChannelCount = 3;
                    break;
                case 4: // 2/1
                    stream.ChannelCount = 3;
                    break;
                case 5: // 3/1
                    stream.ChannelCount = 4;
                    break;
                case 6: // 2/2
                    stream.ChannelCount = 4;
                    break;
                case 7: // 3/2
                    stream.ChannelCount = 5;
                    break;
                default:
                    stream.ChannelCount = 0;
                    break;
            }

            switch (sr_code)
            {
                case 0:
                    stream.SampleRate = 48000;
                    break;
                case 1:
                    stream.SampleRate = 44100;
                    break;
                case 2:
                    stream.SampleRate = 32000;
                    break;
                default:
                    stream.SampleRate = 0;
                    break;
            }

            if (bsid <= 10)
            {
                switch (frame_size_code >> 1)
                {
                    case 18:
                        stream.BitRate = 640000;
                        break;
                    case 17:
                        stream.BitRate = 576000;
                        break;
                    case 16:
                        stream.BitRate = 512000;
                        break;
                    case 15:
                        stream.BitRate = 448000;
                        break;
                    case 14:
                        stream.BitRate = 384000;
                        break;
                    case 13:
                        stream.BitRate = 320000;
                        break;
                    case 12:
                        stream.BitRate = 256000;
                        break;
                    case 11:
                        stream.BitRate = 224000;
                        break;
                    case 10:
                        stream.BitRate = 192000;
                        break;
                    case 9:
                        stream.BitRate = 160000;
                        break;
                    case 8:
                        stream.BitRate = 128000;
                        break;
                    case 7:
                        stream.BitRate = 112000;
                        break;
                    case 6:
                        stream.BitRate = 96000;
                        break;
                    case 5:
                        stream.BitRate = 80000;
                        break;
                    case 4:
                        stream.BitRate = 64000;
                        break;
                    case 3:
                        stream.BitRate = 56000;
                        break;
                    case 2:
                        stream.BitRate = 48000;
                        break;
                    case 1:
                        stream.BitRate = 40000;
                        break;
                    case 0:
                        stream.BitRate = 32000;
                        break;
                    default:
                        stream.BitRate = 0;
                        break;
                }
            }
            else
            {
                stream.BitRate = (long)
                    (4.0 * frame_size * stream.SampleRate / (num_blocks * 256));
            }

            stream.LFE = lfe_on;
            if (stream.StreamType != TSStreamType.AC3_PLUS_AUDIO &&
                stream.StreamType != TSStreamType.AC3_PLUS_SECONDARY_AUDIO)
            {
                stream.DialNorm = dial_norm - 31;
            }
            stream.IsVBR = false;
            stream.IsInitialized = true;
        }
Example #5
0
        public static void Scan(
            TSAudioStream stream,
            TSStreamBuffer buffer,
            ref string tag)
        {
            if (stream.IsInitialized)
            {
                return;
            }

            byte[] sync = buffer.ReadBytes(2);
            if (sync == null ||
                sync[0] != 0x0B ||
                sync[1] != 0x77)
            {
                return;
            }

            int sr_code         = 0;
            int frame_size      = 0;
            int frame_size_code = 0;
            int channel_mode    = 0;
            int lfe_on          = 0;
            int dial_norm       = 0;
            int num_blocks      = 0;

            byte[] hdr  = buffer.ReadBytes(4);
            int    bsid = (hdr[3] & 0xF8) >> 3;

            buffer.Seek(-4, SeekOrigin.Current);
            if (bsid <= 10)
            {
                byte[] crc = buffer.ReadBytes(2);
                sr_code         = buffer.ReadBits(2);
                frame_size_code = buffer.ReadBits(6);
                bsid            = buffer.ReadBits(5);
                int bsmod = buffer.ReadBits(3);

                channel_mode = buffer.ReadBits(3);
                int cmixlev = 0;
                if (((channel_mode & 0x1) > 0) && (channel_mode != 0x1))
                {
                    cmixlev = buffer.ReadBits(2);
                }
                int surmixlev = 0;
                if ((channel_mode & 0x4) > 0)
                {
                    surmixlev = buffer.ReadBits(2);
                }
                int dsurmod = 0;
                if (channel_mode == 0x2)
                {
                    dsurmod = buffer.ReadBits(2);
                    if (dsurmod == 0x2)
                    {
                        stream.AudioMode = TSAudioMode.Surround;
                    }
                }
                lfe_on    = buffer.ReadBits(1);
                dial_norm = buffer.ReadBits(5);
                int compr = 0;
                if (1 == buffer.ReadBits(1))
                {
                    compr = buffer.ReadBits(8);
                }
                int langcod = 0;
                if (1 == buffer.ReadBits(1))
                {
                    langcod = buffer.ReadBits(8);
                }
                int mixlevel = 0;
                int roomtyp  = 0;
                if (1 == buffer.ReadBits(1))
                {
                    mixlevel = buffer.ReadBits(5);
                    roomtyp  = buffer.ReadBits(2);
                }
                if (channel_mode == 0)
                {
                    int dialnorm2 = buffer.ReadBits(5);
                    int compr2    = 0;
                    if (1 == buffer.ReadBits(1))
                    {
                        compr2 = buffer.ReadBits(8);
                    }
                    int langcod2 = 0;
                    if (1 == buffer.ReadBits(1))
                    {
                        langcod2 = buffer.ReadBits(8);
                    }
                    int mixlevel2 = 0;
                    int roomtyp2  = 0;
                    if (1 == buffer.ReadBits(1))
                    {
                        mixlevel2 = buffer.ReadBits(5);
                        roomtyp2  = buffer.ReadBits(2);
                    }
                }
                int copyrightb = buffer.ReadBits(1);
                int origbs     = buffer.ReadBits(1);
                if (bsid == 6)
                {
                    if (1 == buffer.ReadBits(1))
                    {
                        int dmixmod       = buffer.ReadBits(2);
                        int ltrtcmixlev   = buffer.ReadBits(3);
                        int ltrtsurmixlev = buffer.ReadBits(3);
                        int lorocmixlev   = buffer.ReadBits(3);
                        int lorosurmixlev = buffer.ReadBits(3);
                    }
                    if (1 == buffer.ReadBits(1))
                    {
                        int dsurexmod    = buffer.ReadBits(2);
                        int dheadphonmod = buffer.ReadBits(2);
                        if (dheadphonmod == 0x2)
                        {
                            // TODO
                        }
                        int adconvtyp = buffer.ReadBits(1);
                        int xbsi2     = buffer.ReadBits(8);
                        int encinfo   = buffer.ReadBits(1);
                        if (dsurexmod == 2)
                        {
                            stream.AudioMode = TSAudioMode.Extended;
                        }
                    }
                }
            }
            else
            {
                int frame_type  = buffer.ReadBits(2);
                int substreamid = buffer.ReadBits(3);
                frame_size = (buffer.ReadBits(11) + 1) << 1;

                sr_code = buffer.ReadBits(2);
                if (sr_code == 3)
                {
                    sr_code = buffer.ReadBits(2);
                }
                else
                {
                    num_blocks = buffer.ReadBits(2);
                }
                channel_mode = buffer.ReadBits(3);
                lfe_on       = buffer.ReadBits(1);
            }

            switch (channel_mode)
            {
            case 0:     // 1+1
                stream.ChannelCount = 2;
                if (stream.AudioMode == TSAudioMode.Unknown)
                {
                    stream.AudioMode = TSAudioMode.DualMono;
                }
                break;

            case 1:     // 1/0
                stream.ChannelCount = 1;
                break;

            case 2:     // 2/0
                stream.ChannelCount = 2;
                if (stream.AudioMode == TSAudioMode.Unknown)
                {
                    stream.AudioMode = TSAudioMode.Stereo;
                }
                break;

            case 3:     // 3/0
                stream.ChannelCount = 3;
                break;

            case 4:     // 2/1
                stream.ChannelCount = 3;
                break;

            case 5:     // 3/1
                stream.ChannelCount = 4;
                break;

            case 6:     // 2/2
                stream.ChannelCount = 4;
                break;

            case 7:     // 3/2
                stream.ChannelCount = 5;
                break;

            default:
                stream.ChannelCount = 0;
                break;
            }

            switch (sr_code)
            {
            case 0:
                stream.SampleRate = 48000;
                break;

            case 1:
                stream.SampleRate = 44100;
                break;

            case 2:
                stream.SampleRate = 32000;
                break;

            default:
                stream.SampleRate = 0;
                break;
            }

            if (bsid <= 10)
            {
                switch (frame_size_code >> 1)
                {
                case 18:
                    stream.BitRate = 640000;
                    break;

                case 17:
                    stream.BitRate = 576000;
                    break;

                case 16:
                    stream.BitRate = 512000;
                    break;

                case 15:
                    stream.BitRate = 448000;
                    break;

                case 14:
                    stream.BitRate = 384000;
                    break;

                case 13:
                    stream.BitRate = 320000;
                    break;

                case 12:
                    stream.BitRate = 256000;
                    break;

                case 11:
                    stream.BitRate = 224000;
                    break;

                case 10:
                    stream.BitRate = 192000;
                    break;

                case 9:
                    stream.BitRate = 160000;
                    break;

                case 8:
                    stream.BitRate = 128000;
                    break;

                case 7:
                    stream.BitRate = 112000;
                    break;

                case 6:
                    stream.BitRate = 96000;
                    break;

                case 5:
                    stream.BitRate = 80000;
                    break;

                case 4:
                    stream.BitRate = 64000;
                    break;

                case 3:
                    stream.BitRate = 56000;
                    break;

                case 2:
                    stream.BitRate = 48000;
                    break;

                case 1:
                    stream.BitRate = 40000;
                    break;

                case 0:
                    stream.BitRate = 32000;
                    break;

                default:
                    stream.BitRate = 0;
                    break;
                }
            }
            else
            {
                stream.BitRate = (long)
                                 (4.0 * frame_size * stream.SampleRate / (num_blocks * 256));
            }

            stream.LFE = lfe_on;
            if (stream.StreamType != TSStreamType.AC3_PLUS_AUDIO &&
                stream.StreamType != TSStreamType.AC3_PLUS_SECONDARY_AUDIO)
            {
                stream.DialNorm = dial_norm - 31;
            }
            stream.IsVBR         = false;
            stream.IsInitialized = true;
        }