1 files changed, 134 insertions, 0 deletions
diff --git a/BDInfo/TSCodecVC1.cs b/BDInfo/TSCodecVC1.cs
new file mode 100644
index 000000000..3cfd50cba
--- /dev/null
+++ b/BDInfo/TSCodecVC1.cs
@@ -0,0 +1,134 @@
+//============================================================================
+// 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 TSCodecVC1
+    {
+        public static void Scan(
+            TSVideoStream stream,
+            TSStreamBuffer buffer,
+            ref string tag)
+        {
+            int parse = 0;
+            byte frameHeaderParse = 0;
+            byte sequenceHeaderParse = 0;
+            bool isInterlaced = false;
+
+            for (int i = 0; i < buffer.Length; i++)
+            {
+                parse = (parse << 8) + buffer.ReadByte();
+
+                if (parse == 0x0000010D)
+                {
+                    frameHeaderParse = 4;
+                }
+                else if (frameHeaderParse > 0)
+                {
+                    --frameHeaderParse;
+                    if (frameHeaderParse == 0)
+                    {
+                        uint pictureType = 0;
+                        if (isInterlaced)
+                        {
+                            if ((parse & 0x80000000) == 0)
+                            {
+                                pictureType = 
+                                    (uint)((parse & 0x78000000) >> 13);
+                            }
+                            else
+                            {
+                                pictureType = 
+                                    (uint)((parse & 0x3c000000) >> 12);
+                            }
+                        }
+                        else
+                        {
+                            pictureType = 
+                                (uint)((parse & 0xf0000000) >> 14);
+                        }
+
+                        if ((pictureType & 0x20000) == 0)
+                        {
+                            tag = "P";
+                        }
+                        else if ((pictureType & 0x10000) == 0)
+                        {
+                            tag = "B";
+                        }
+                        else if ((pictureType & 0x8000) == 0)
+                        {
+                            tag = "I";
+                        }
+                        else if ((pictureType & 0x4000) == 0)
+                        {
+                            tag = "BI";
+                        }
+                        else
+                        {
+                            tag = null;
+                        }
+                        if (stream.IsInitialized) return;
+                    }
+                }
+                else if (parse == 0x0000010F)
+                {
+                    sequenceHeaderParse = 6;
+                }
+                else if (sequenceHeaderParse > 0)
+                {
+                    --sequenceHeaderParse;
+                    switch (sequenceHeaderParse)
+                    {
+                        case 5:
+                            int profileLevel = ((parse & 0x38) >> 3);
+                            if (((parse & 0xC0) >> 6) == 3)
+                            {
+                                stream.EncodingProfile = string.Format(
+                                    "Advanced Profile {0}", profileLevel);
+                            }
+                            else
+                            {
+                                stream.EncodingProfile = string.Format(
+                                    "Main Profile {0}", profileLevel);
+                            }
+                            break;
+
+                        case 0:
+                            if (((parse & 0x40) >> 6) > 0)
+                            {
+                                isInterlaced = true;
+                            }
+                            else
+                            {
+                                isInterlaced = false;
+                            }
+                            break;
+                    }
+                    stream.IsVBR = true;
+                    stream.IsInitialized = true;
+                }
+            }
+        }
+    }
+}