protected override void SetMasterElementValue(ulong id, ulong size)
{
switch (id)
{
case ElementID.SeekHead:
Stream.Seek((long)size, SeekOrigin.Current);
break;
case ElementID.Info:
{
var child = new Info
{
Stream = Stream,
Offset = Stream.Position,
Size = size
};
child.LoadChildren();
Info.Add(child);
}
break;
case ElementID.Cues:
{
Cues = new Cues
{
Stream = Stream,
Offset = Stream.Position,
Size = size
};
Cues.LoadChildren();
}
break;
case ElementID.Tracks:
{
var child = new Tracks
{
Stream = Stream,
Offset = Stream.Position,
Size = size
};
child.LoadChildren();
Tracks.Add(child);
}
break;
case ElementID.Cluster:
if (Cluster == null)
{
Cluster = new Cluster()
{
Stream = Stream,
Offset = Stream.Position,
Size = size,
Parent = this
};
}
Stream.Seek((long)size, SeekOrigin.Current);
break;
case ElementID.Attachments:
{
Attachments = new Attachments
{
Stream = Stream,
Offset = Stream.Position,
Size = size
};
Attachments.LoadChildren();
}
break;
case ElementID.Chapters:
{
Chapters = new Chapters
{
Stream = Stream,
Offset = Stream.Position,
Size = size
};
Chapters.LoadChildren();
}
break;
case ElementID.Tags:
{
var child = new Tags
{
Stream = Stream,
Offset = Stream.Position,
Size = size
};
child.LoadChildren();
Tags.Add(child);
}
break;
}
}
public static Document ReadFromStream(Stream stream)
{
Document doc = new Document()
{
Offset = 0,
Stream = stream,
Size = (ulong)stream.Length
};
doc.Header = new List <EBML>();
doc.Segments = new List <Segment>();
if (!doc.TryParse(stream, doc.Header, true))
{
//mkv 아냥..
return(doc);
}
if (!doc.TryParse(stream, doc.Segments, false))
{
//Segment 없어!
return(doc);
}
foreach (var segment in doc.Segments)
{
stream.Seek(segment.Offset, SeekOrigin.Begin);
segment.SeekHead = new List <SeekHead>();
segment.TryParse <SeekHead>(stream, segment.SeekHead, true);
if (segment.SeekHead.Count > 0)
{
//메타 시크가 검색이 되었다면 개별적으로 로드
foreach (var seekHead in segment.SeekHead)
{
foreach (var seek in seekHead.Seek)
{
//스트림 포지션 이동해야 된다....
stream.Seek(segment.Offset + (long)seek.SeekPosition, SeekOrigin.Begin);
switch (seek.SeekID)
{
case ElementID.Info:
//그리고 ConvVlong 과 ToUlong 비교해보자...
segment.TryParse <Info>(stream, segment.Info, true);
break;
case ElementID.Tracks:
segment.TryParse <Tracks>(stream, segment.Tracks, true);
break;
case ElementID.Cues:
Cues cues = null;
if (segment.TryParse <Cues>(stream, out cues, true))
{
segment.Cues = cues;
}
break;
//폰트가 저장할때 사용
case ElementID.Attachments:
Attachments attachments = null;
if (segment.TryParse <Attachments>(stream, out attachments, true))
{
segment.Attachments = attachments;
}
break;
//사용할일이 없다....
case ElementID.Chapters:
Chapters chapters = null;
if (segment.TryParse <Chapters>(stream, out chapters, true))
{
// segment.Chapters = chapters;
}
break;
//사용할일이 현재로썬 없다....
case ElementID.Tags:
//segment.TryParse<Tags>(stream, segment.Tags, true);
break;
}
}
}
}
if (doc.Segments[0].Tracks == null || !doc.Segments[0].Tracks.Any())
{
//메타 시크가 검색되지 않았으므로, 순차적으로 전체(클러스터 포함) 로딩...(이 경우.. .로딩 프로그레스 처리 고려)
segment.LoadChildren();
}
}
return(doc);
}
