public static VgmHeader Read(ISequentialReader reader)
{
var header = new VgmHeader();
var unused = new V151HeaderPart();
ReadCommon(reader, ref header.Common);
if (header.Common.VgmIdentification != CommonHeaderPart.VgmIdentificationValue)
{
throw new VgmException("Vgm magic number does not found");
}
var version = header.Common.Version;
if (version != FormatVersion.V100 &&
version != FormatVersion.V101 &&
version != FormatVersion.V110 &&
version != FormatVersion.V150)
{
throw new VgmException("Unsupported version");
}
Read100(reader, ref header.V100);
if (version == FormatVersion.V100)
{
return(header);
}
Read101(reader, ref header.V101);
if (version == FormatVersion.V101)
{
return(header);
}
Read110Part1(reader, ref header.V110);
Read151Part1(reader, ref unused);
Read110Part2(reader, ref header.V110);
if (version == FormatVersion.V110)
{
return(header);
}
Read150(reader, ref header.V150);
return(header);
}
private static void Read151Part1(ISequentialReader reader, ref V151HeaderPart part)
{
part.SN76489Flags = reader.ReadByte();
}