Inheritance: ADBaseLibrary.Matroska.Objects.EbmlMaster
Ejemplo n.º 1
0
 public static void MatroskaHash(string inpath, string outpath)
 {
     FileInfo f = new FileInfo(inpath);
     Stream i = File.OpenRead(inpath);
     BinaryReader reader = new BinaryReader(i);
     Container c = new Container();
     c.Read(reader, (ulong)f.Length);
     FixUIDS(c);
     EbmlBinary segmentuid = NormalizeHeader(c);
     MoveTagInfoToTracks(c);
     Shrink(c);
     FixPositions(c);
     Stream o = File.Open(outpath, FileMode.Create, FileAccess.Write);
     BinaryWriter writer = new BinaryWriter(o);
     MD5 md5 = MD5.Create();
     c.Write(writer, md5);
     //Using Cluster Data MD5 as segment UID
     byte[] b = new byte[0];
     md5.TransformFinalBlock(b, 0, 0);
     byte[] hash = md5.Hash;
     segmentuid.Value = hash;
     writer.BaseStream.Seek((long)segmentuid.OutputValueOffset, SeekOrigin.Begin);
     writer.Write(hash);
     writer.Close();
     reader.Close();
     i.Close();
     o.Close();
 }
Ejemplo n.º 2
0
 internal static void Shrink(Container c)
 {
     c.RemoveAll(Ids.MATROSKA_ID_TAGS);
     c.RemoveAll(Ids.EBML_ID_VOID);
     c.RemoveAll(Ids.EBML_ID_CRC32);
 }
Ejemplo n.º 3
0
        internal static EbmlBinary NormalizeHeader(Container c)
        {
            //Remove DATEUTC
            EbmlMaster info = (EbmlMaster)c.FindFirst(Ids.MATROSKA_ID_INFO);
            EbmlBinary date = (EbmlBinary)info.FindFirst(Ids.MATROSKA_ID_DATEUTC);
            if (date != null)
                info.Value.Remove(date);
            //Changing Muxing and Writting App to a Constant.
            EbmlUtf8 muxapp = (EbmlUtf8)info.FindFirst(Ids.MATROSKA_ID_MUXINGAPP);
            if (muxapp == null)
            {
                muxapp = new EbmlUtf8 { Id = Ids.MATROSKA_ID_MUXINGAPP };
                info.Value.Add(muxapp);
            }
            EbmlUtf8 wrtapp = (EbmlUtf8)info.FindFirst(Ids.MATROSKA_ID_WRITINGAPP);
            if (wrtapp == null)
            {
                wrtapp = new EbmlUtf8 { Id = Ids.MATROSKA_ID_WRITINGAPP };
                info.Value.Add(wrtapp);
            }
            muxapp.Value = wrtapp.Value = "AOD";
            EbmlBinary seguid = (EbmlBinary)info.FindFirst(Ids.MATROSKA_ID_SEGMENTUID);
            if (seguid == null)
            {
                seguid = new EbmlBinary { Id = Ids.MATROSKA_ID_SEGMENTUID, Value = new byte[16] };
                info.Value.Add(seguid);
            }

            info.Value.Sort();
            return seguid;
        }
Ejemplo n.º 4
0
 internal static void MoveTagInfoToTracks(Container c)
 {
     //Moving Title and Language tags to tracks if they exists
     List<EbmlGeneric> tracks = c.FindAll(Ids.MATROSKA_ID_TRACKENTRY);
     List<EbmlGeneric> tags = c.FindAll(Ids.MATROSKA_ID_TAG);
     foreach (EbmlMaster t in tags)
     {
         EbmlMaster tt = (EbmlMaster)t.FindFirst(Ids.MATROSKA_ID_TAGTARGETS);
         if (tt != null)
         {
             EbmlMaster sp = (EbmlMaster)t.FindFirst(Ids.MATROSKA_ID_SIMPLETAG);
             EbmlUint jk = (EbmlUint)tt.FindFirst(Ids.MATROSKA_ID_TAGTARGETS_TRACKUID);
             if (jk != null)
             {
                 EbmlUtf8 name = (EbmlUtf8)sp.FindFirst(Ids.MATROSKA_ID_TAGNAME);
                 EbmlUtf8 value = (EbmlUtf8)sp.FindFirst(Ids.MATROSKA_ID_TAGSTRING);
                 if (name != null && value != null)
                 {
                     string nm = name.Value.ToUpper(CultureInfo.InvariantCulture);
                     string vl = value.Value;
                     if (nm == "LANGUAGE" || nm == "TITLE" || nm == "NAME")
                     {
                         foreach (EbmlMaster j in tracks)
                         {
                             EbmlUint u = (EbmlUint)j.FindFirst(Ids.MATROSKA_ID_TRACKUID);
                             if (u.Value == jk.Value)
                             {
                                 EbmlUtf8 change;
                                 if (nm == "TITLE" || nm == "NAME")
                                 {
                                     change = (EbmlUtf8)j.FindFirst(Ids.MATROSKA_ID_TRACKNAME);
                                     if (change == null)
                                     {
                                         change = new EbmlUtf8 { Id = Ids.MATROSKA_ID_TRACKNAME };
                                         j.Value.Add(change);
                                     }
                                 }
                                 else
                                 {
                                     change = (EbmlUtf8)j.FindFirst(Ids.MATROSKA_ID_TRACKLANGUAGE);
                                     if (change == null)
                                     {
                                         change = new EbmlUtf8 { Id = Ids.MATROSKA_ID_TRACKLANGUAGE };
                                         j.Value.Add(change);
                                     }
                                 }
                                 change.Value = vl;
                                 j.Value.Sort();
                                 break;
                             }
                         }
                     }
                 }
             }
         }
     }
 }
Ejemplo n.º 5
0
        public static void FixPositions(Container c)
        {
            EbmlMaster segment = (EbmlMaster)c.FindFirst(Ids.MATROSKA_ID_SEGMENT);
            bool repeatpass = false;

            List<EbmlGeneric> cuepositions = c.FindAll(Ids.MATROSKA_ID_CUECLUSTERPOSITION);
            List<EbmlGeneric> clusters = c.FindAll(Ids.MATROSKA_ID_CLUSTER);
            int cnt = 1;
            foreach (EbmlUint j in cuepositions)
            {
                ulong val = j.Value + segment.InputValueOffset;
                EbmlMaster repo = (EbmlMaster)clusters.First(a => a.InputOffset == val);
                if (repo.LinkedId != 0)
                    j.LinkedId = repo.LinkedId;
                else
                {
                    repo.LinkedId = j.LinkedId = cnt;
                    cnt++;
                }
            }

            do
            {
                repeatpass = false;
                //Propagate Expected Offsets
                c.PropagateExpectedOffset();
                //Reposition Cues
                foreach (EbmlUint j in cuepositions)
                {
                    EbmlMaster repo = (EbmlMaster)clusters.First(a => a.LinkedId==j.LinkedId);
                    ulong nvalue = repo.ExpectedOffset - segment.ExpectedValueOffset;
                    if (nvalue != j.Value)
                    {
                        repeatpass = true;
                        j.Value = nvalue;
                    }
                }
                if (!repeatpass)
                {
                    //Propagate Expected Offsets
                    c.PropagateExpectedOffset();
                    //Fix Seek Header
                    EbmlMaster smas = (EbmlMaster)c.FindFirst(Ids.MATROSKA_ID_SEEKHEAD);
                    List<EbmlGeneric> seeks = c.FindAll(Ids.MATROSKA_ID_SEEKENTRY);
                    foreach (EbmlMaster sk in seeks)
                    {
                        EbmlUint id = (EbmlUint)sk.FindFirst(Ids.MATROSKA_ID_SEEKID);
                        if (id != null)
                        {
                            EbmlUint pos = (EbmlUint)sk.FindFirst(Ids.MATROSKA_ID_SEEKPOSITION);
                            EbmlGeneric gen = segment.FindFirst(id.Value);
                            if (gen == null)
                            {
                                repeatpass = true;
                                smas.Value.Remove(sk);
                                break;
                            }
                            ulong nval = gen.ExpectedOffset - segment.ExpectedValueOffset;
                            if (pos.Value != nval)
                            {
                                pos.Value = nval;
                                repeatpass = true;
                            }
                        }
                    }
                }
            } while (repeatpass);
        }
Ejemplo n.º 6
0
 internal static void FixUIDS(Container c)
 {
     //Change UIDS to numeric ids.
     //Fix Track IDS
     List<EbmlGeneric> tracks = c.FindAll(Ids.MATROSKA_ID_TRACKENTRY);
     List<EbmlGeneric> gg = c.FindAll(Ids.MATROSKA_ID_TAGTARGETS_TRACKUID);
     List<EbmlGeneric> planes = c.FindAll(Ids.MATROSKA_ID_TRACKPLANEUID);
     foreach (EbmlMaster j in tracks)
     {
         EbmlUint u = (EbmlUint)j.FindFirst(Ids.MATROSKA_ID_TRACKUID);
         EbmlUint tn = (EbmlUint)j.FindFirst(Ids.MATROSKA_ID_TRACKNUMBER);
         foreach (EbmlUint n in planes)
         {
             if (n.Value == u.Value)
             {
                 n.Value = tn.Value;
                 break;
             }
         }
         foreach (EbmlUint n in gg)
         {
             ulong nval = 0;
             if (n.Value == u.Value)
             {
                 n.Value = tn.Value;
                 break;
             }
         }
         u.Value = tn.Value;
     }
     //Fix Chapters
     List<EbmlGeneric> chapters = c.FindAll(Ids.MATROSKA_ID_EDITIONENTRY);
     gg = c.FindAll(Ids.MATROSKA_ID_TAGTARGETS_CHAPTERUID);
     ulong cnt = 1;
     foreach (EbmlMaster j in chapters)
     {
         EbmlUint u = (EbmlUint)j.FindFirst(Ids.MATROSKA_ID_CHAPTERUID);
         foreach (EbmlUint n in gg)
         {
             if (n.Value == u.Value)
             {
                 n.Value = cnt;
                 break;
             }
         }
         u.Value = cnt;
         u = (EbmlUint)j.FindFirst(Ids.MATROSKA_ID_EDITIONUID);
         if (u != null)
             u.Value = cnt;
         cnt++;
     }
     //Fix Attachments
     List<EbmlGeneric> attachments = c.FindAll(Ids.MATROSKA_ID_ATTACHEDFILE);
     gg = c.FindAll(Ids.MATROSKA_ID_TAGTARGETS_ATTACHUID);
     cnt = 1;
     foreach (EbmlMaster j in chapters)
     {
         EbmlUint u = (EbmlUint)j.FindFirst(Ids.MATROSKA_ID_FILEUID);
         foreach (EbmlUint n in gg)
         {
             if (n.Value == u.Value)
             {
                 n.Value = cnt;
                 break;
             }
         }
         u.Value = cnt;
         cnt++;
     }
 }