private void ReadHeader(EBMLElement element)
{
string doctype = null;
ulong i = 0;
while (i < element.DataSize)
{
EBMLElement child = new EBMLElement(this, element.DataOffset + i);
EBMLID ebml_id = (EBMLID)child.ID;
switch (ebml_id)
{
case EBMLID.EBMLDocType:
doctype = child.ReadString();
break;
default:
break;
}
i += child.Size;
}
// Check DocType
if (String.IsNullOrEmpty(doctype) || (doctype != "matroska" && doctype != "webm"))
{
throw new UnsupportedFormatException("DocType is not matroska or webm");
}
}
/// <summary>
/// Reads the file with a specified read style.
/// </summary>
/// <param name="propertiesStyle">
/// A <see cref="ReadStyle" /> value specifying at what level
/// of accuracy to read the media properties, or <see
/// cref="ReadStyle.None" /> to ignore the properties.
/// </param>
private void Read(ReadStyle propertiesStyle)
{
ulong offset = 0;
while (offset < (ulong)Length)
{
EBMLElement element = new EBMLElement(this, offset);
EBMLID ebml_id = (EBMLID)element.ID;
MatroskaID matroska_id = (MatroskaID)element.ID;
switch (ebml_id)
{
case EBMLID.EBMLHeader:
ReadHeader(element);
break;
default:
break;
}
switch (matroska_id)
{
case MatroskaID.MatroskaSegment:
ReadSegment(element);
break;
default:
break;
}
offset += element.Size;
}
}
