mirror of
https://github.com/jellyfin/jellyfin.git
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152 lines
5.9 KiB
C#
152 lines
5.9 KiB
C#
//============================================================================
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// BDInfo - Blu-ray Video and Audio Analysis Tool
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// Copyright © 2010 Cinema Squid
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//=============================================================================
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace BDInfo
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{
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public abstract class TSCodecAVC
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{
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public static void Scan(
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TSVideoStream stream,
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TSStreamBuffer buffer,
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ref string tag)
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{
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uint parse = 0;
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byte accessUnitDelimiterParse = 0;
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byte sequenceParameterSetParse = 0;
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string profile = null;
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string level = null;
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byte constraintSet0Flag = 0;
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byte constraintSet1Flag = 0;
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byte constraintSet2Flag = 0;
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byte constraintSet3Flag = 0;
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for (int i = 0; i < buffer.Length; i++)
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{
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parse = (parse << 8) + buffer.ReadByte();
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if (parse == 0x00000109)
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{
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accessUnitDelimiterParse = 1;
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}
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else if (accessUnitDelimiterParse > 0)
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{
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--accessUnitDelimiterParse;
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if (accessUnitDelimiterParse == 0)
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{
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switch ((parse & 0xFF) >> 5)
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{
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case 0: // I
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case 3: // SI
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case 5: // I, SI
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tag = "I";
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break;
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case 1: // I, P
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case 4: // SI, SP
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case 6: // I, SI, P, SP
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tag = "P";
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break;
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case 2: // I, P, B
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case 7: // I, SI, P, SP, B
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tag = "B";
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break;
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}
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if (stream.IsInitialized) return;
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}
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}
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else if (parse == 0x00000127 || parse == 0x00000167)
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{
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sequenceParameterSetParse = 3;
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}
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else if (sequenceParameterSetParse > 0)
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{
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--sequenceParameterSetParse;
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switch (sequenceParameterSetParse)
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{
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case 2:
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switch (parse & 0xFF)
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{
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case 66:
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profile = "Baseline Profile";
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break;
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case 77:
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profile = "Main Profile";
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break;
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case 88:
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profile = "Extended Profile";
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break;
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case 100:
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profile = "High Profile";
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break;
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case 110:
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profile = "High 10 Profile";
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break;
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case 122:
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profile = "High 4:2:2 Profile";
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break;
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case 144:
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profile = "High 4:4:4 Profile";
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break;
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default:
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profile = "Unknown Profile";
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break;
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}
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break;
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case 1:
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constraintSet0Flag = (byte)
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((parse & 0x80) >> 7);
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constraintSet1Flag = (byte)
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((parse & 0x40) >> 6);
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constraintSet2Flag = (byte)
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((parse & 0x20) >> 5);
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constraintSet3Flag = (byte)
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((parse & 0x10) >> 4);
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break;
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case 0:
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byte b = (byte)(parse & 0xFF);
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if (b == 11 && constraintSet3Flag == 1)
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{
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level = "1b";
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}
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else
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{
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level = string.Format(
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"{0:D}.{1:D}",
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b / 10, (b - ((b / 10) * 10)));
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}
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stream.EncodingProfile = string.Format(
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"{0} {1}", profile, level);
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stream.IsVBR = true;
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stream.IsInitialized = true;
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break;
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}
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}
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}
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return;
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}
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}
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}
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