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);
}
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);
}
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;
}
}
}
}
}
}
}
}