public static BoxInfo getNextBoxInfo(HDSBinaryReader br)
{
if (!br.BaseStream.CanRead || (br.BytesAvailable < F4FConstants.FIELD_SIZE_LENGTH + F4FConstants.FIELD_TYPE_LENGTH))
{
return(null);
}
uint size = br.ReadUInt32();
string type = br.ReadUtfBytes(F4FConstants.FIELD_TYPE_LENGTH);
uint length = F4FConstants.FIELD_SIZE_LENGTH + F4FConstants.FIELD_TYPE_LENGTH;
if (size == F4FConstants.FLAG_USE_LARGE_SIZE)
{
size = (uint)br.ReadUInt64();
length += F4FConstants.FIELD_LARGE_SIZE_LENGTH;
}
if (type == F4FConstants.EXTENDED_TYPE)
{
// Read past the extended type.
br.Position += F4FConstants.FIELD_EXTENDED_TYPE_LENGTH;
length += F4FConstants.FIELD_EXTENDED_TYPE_LENGTH;
}
return(new BoxInfo(size, type, length));
}
