diff options
Diffstat (limited to 'BDInfo/TSCodecTrueHD.cs')
| -rw-r--r-- | BDInfo/TSCodecTrueHD.cs | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/BDInfo/TSCodecTrueHD.cs b/BDInfo/TSCodecTrueHD.cs new file mode 100644 index 000000000..baf4fa3df --- /dev/null +++ b/BDInfo/TSCodecTrueHD.cs @@ -0,0 +1,186 @@ +//============================================================================ +// BDInfo - Blu-ray Video and Audio Analysis Tool +// Copyright © 2010 Cinema Squid +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 2.1 of the License, or (at your option) any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +//============================================================================= + + +namespace BDInfo +{ + public abstract class TSCodecTrueHD + { + public static void Scan( + TSAudioStream stream, + TSStreamBuffer buffer, + ref string tag) + { + if (stream.IsInitialized && + stream.CoreStream != null && + stream.CoreStream.IsInitialized) return; + + bool syncFound = false; + uint sync = 0; + for (int i = 0; i < buffer.Length; i++) + { + sync = (sync << 8) + buffer.ReadByte(); + if (sync == 0xF8726FBA) + { + syncFound = true; + break; + } + } + + if (!syncFound) + { + tag = "CORE"; + if (stream.CoreStream == null) + { + stream.CoreStream = new TSAudioStream(); + stream.CoreStream.StreamType = TSStreamType.AC3_AUDIO; + } + if (!stream.CoreStream.IsInitialized) + { + buffer.BeginRead(); + TSCodecAC3.Scan(stream.CoreStream, buffer, ref tag); + } + return; + } + + tag = "HD"; + int ratebits = buffer.ReadBits(4); + if (ratebits != 0xF) + { + stream.SampleRate = + (((ratebits & 8) > 0 ? 44100 : 48000) << (ratebits & 7)); + } + int temp1 = buffer.ReadBits(8); + int channels_thd_stream1 = buffer.ReadBits(5); + int temp2 = buffer.ReadBits(2); + + stream.ChannelCount = 0; + stream.LFE = 0; + int c_LFE2 = buffer.ReadBits(1); + if (c_LFE2 == 1) + { + stream.LFE += 1; + } + int c_Cvh = buffer.ReadBits(1); + if (c_Cvh == 1) + { + stream.ChannelCount += 1; + } + int c_LRw = buffer.ReadBits(1); + if (c_LRw == 1) + { + stream.ChannelCount += 2; + } + int c_LRsd = buffer.ReadBits(1); + if (c_LRsd == 1) + { + stream.ChannelCount += 2; + } + int c_Ts = buffer.ReadBits(1); + if (c_Ts == 1) + { + stream.ChannelCount += 1; + } + int c_Cs = buffer.ReadBits(1); + if (c_Cs == 1) + { + stream.ChannelCount += 1; + } + int c_LRrs = buffer.ReadBits(1); + if (c_LRrs == 1) + { + stream.ChannelCount += 2; + } + int c_LRc = buffer.ReadBits(1); + if (c_LRc == 1) + { + stream.ChannelCount += 2; + } + int c_LRvh = buffer.ReadBits(1); + if (c_LRvh == 1) + { + stream.ChannelCount += 2; + } + int c_LRs = buffer.ReadBits(1); + if (c_LRs == 1) + { + stream.ChannelCount += 2; + } + int c_LFE = buffer.ReadBits(1); + if (c_LFE == 1) + { + stream.LFE += 1; + } + int c_C = buffer.ReadBits(1); + if (c_C == 1) + { + stream.ChannelCount += 1; + } + int c_LR = buffer.ReadBits(1); + if (c_LR == 1) + { + stream.ChannelCount += 2; + } + + int access_unit_size = 40 << (ratebits & 7); + int access_unit_size_pow2 = 64 << (ratebits & 7); + + int a1 = buffer.ReadBits(16); + int a2 = buffer.ReadBits(16); + int a3 = buffer.ReadBits(16); + + int is_vbr = buffer.ReadBits(1); + int peak_bitrate = buffer.ReadBits(15); + peak_bitrate = (peak_bitrate * stream.SampleRate) >> 4; + + double peak_bitdepth = + (double)peak_bitrate / + (stream.ChannelCount + stream.LFE) / + stream.SampleRate; + if (peak_bitdepth > 14) + { + stream.BitDepth = 24; + } + else + { + stream.BitDepth = 16; + } + +#if DEBUG + System.Diagnostics.Debug.WriteLine(string.Format( + "{0}\t{1}\t{2:F2}", + stream.PID, peak_bitrate, peak_bitdepth)); +#endif + /* + // TODO: Get THD dialnorm from metadata + if (stream.CoreStream != null) + { + TSAudioStream coreStream = (TSAudioStream)stream.CoreStream; + if (coreStream.DialNorm != 0) + { + stream.DialNorm = coreStream.DialNorm; + } + } + */ + + stream.IsVBR = true; + stream.IsInitialized = true; + } + } +} |