diff options
Diffstat (limited to 'BDInfo/TSCodecLPCM.cs')
| -rw-r--r-- | BDInfo/TSCodecLPCM.cs | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/BDInfo/TSCodecLPCM.cs b/BDInfo/TSCodecLPCM.cs new file mode 100644 index 000000000..b9c838534 --- /dev/null +++ b/BDInfo/TSCodecLPCM.cs @@ -0,0 +1,126 @@ +//============================================================================ +// 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 +//============================================================================= + +using System; +using System.Collections.Generic; +using System.Text; + +namespace BDInfo +{ + public abstract class TSCodecLPCM + { + 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; + } + } +} |