diff options
Diffstat (limited to 'BDInfo/TSCodecAVC.cs')
| -rw-r--r-- | BDInfo/TSCodecAVC.cs | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/BDInfo/TSCodecAVC.cs b/BDInfo/TSCodecAVC.cs new file mode 100644 index 000000000..43c6d6f85 --- /dev/null +++ b/BDInfo/TSCodecAVC.cs @@ -0,0 +1,148 @@ +//============================================================================ +// 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 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; + } + } +} |