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LukePulverenti
2013-02-20 20:33:05 -05:00
parent 845554722e
commit 767cdc1f6f
924 changed files with 103121 additions and 18677 deletions
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151
BDInfo/TSCodecAVC.cs Normal file
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//============================================================================
// 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 TSCodecAVC
{
public static void Scan(
TSVideoStream stream,
TSStreamBuffer buffer,
ref string tag)
{
uint parse = 0;
byte accessUnitDelimiterParse = 0;
byte sequenceParameterSetParse = 0;
string profile = null;
string level = null;
byte constraintSet0Flag = 0;
byte constraintSet1Flag = 0;
byte constraintSet2Flag = 0;
byte constraintSet3Flag = 0;
for (int i = 0; i < buffer.Length; i++)
{
parse = (parse << 8) + buffer.ReadByte();
if (parse == 0x00000109)
{
accessUnitDelimiterParse = 1;
}
else if (accessUnitDelimiterParse > 0)
{
--accessUnitDelimiterParse;
if (accessUnitDelimiterParse == 0)
{
switch ((parse & 0xFF) >> 5)
{
case 0: // I
case 3: // SI
case 5: // I, SI
tag = "I";
break;
case 1: // I, P
case 4: // SI, SP
case 6: // I, SI, P, SP
tag = "P";
break;
case 2: // I, P, B
case 7: // I, SI, P, SP, B
tag = "B";
break;
}
if (stream.IsInitialized) return;
}
}
else if (parse == 0x00000127 || parse == 0x00000167)
{
sequenceParameterSetParse = 3;
}
else if (sequenceParameterSetParse > 0)
{
--sequenceParameterSetParse;
switch (sequenceParameterSetParse)
{
case 2:
switch (parse & 0xFF)
{
case 66:
profile = "Baseline Profile";
break;
case 77:
profile = "Main Profile";
break;
case 88:
profile = "Extended Profile";
break;
case 100:
profile = "High Profile";
break;
case 110:
profile = "High 10 Profile";
break;
case 122:
profile = "High 4:2:2 Profile";
break;
case 144:
profile = "High 4:4:4 Profile";
break;
default:
profile = "Unknown Profile";
break;
}
break;
case 1:
constraintSet0Flag = (byte)
((parse & 0x80) >> 7);
constraintSet1Flag = (byte)
((parse & 0x40) >> 6);
constraintSet2Flag = (byte)
((parse & 0x20) >> 5);
constraintSet3Flag = (byte)
((parse & 0x10) >> 4);
break;
case 0:
byte b = (byte)(parse & 0xFF);
if (b == 11 && constraintSet3Flag == 1)
{
level = "1b";
}
else
{
level = string.Format(
"{0:D}.{1:D}",
b / 10, (b - ((b / 10) * 10)));
}
stream.EncodingProfile = string.Format(
"{0} {1}", profile, level);
stream.IsVBR = true;
stream.IsInitialized = true;
break;
}
}
}
return;
}
}
}