public static object ReadHeader(Stream data)
{
var baseHeader = data.ReadStruct <BaseHeader>();
var baseSize = Marshal.SizeOf <BaseHeader>();
if (baseHeader.size < baseSize)
{
throw new Exception("Unexpected header size");
}
if (baseHeader.size == baseSize)
{
return(baseHeader);
}
if (baseHeader.platformId.Value == 0x44583131)
{
//dx11 platform
var dx11Size = Marshal.SizeOf <DX11Header>();
var extraBytesCount = dx11Size - baseSize;
var extraBytes = data.ReadBytes(extraBytesCount);
var baseBytes = MemoryUtils.StructToBytes(baseHeader);
List <byte> dx11Bytes = new List <byte>();
dx11Bytes.AddRange(baseBytes);
dx11Bytes.AddRange(extraBytes);
return(MemoryUtils.BytesToStruct <DX11Header>(dx11Bytes.ToArray()));
}
throw new Exception("Unknown platform");
}