124 lines
4.0 KiB
C#
124 lines
4.0 KiB
C#
//============================================================================
|
|
// 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 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;
|
|
}
|
|
}
|
|
}
|