public static FileEncoding VerifyRom(Stream rom, UInt64 TargetCrc)
{
UInt64 crc_File;
using (BinaryReader br = new BinaryReader(rom))
{
br.BaseStream.Position = 0x10;
crc_File = br.ReadUInt64();
Endian.Convert(ref crc_File);
}
//crc_File now contains the crc from file with proper endianness
//if big endian
if (TargetCrc == crc_File)
{
return(FileEncoding.BigEndian32);
}
//if rom is Little Endian (32 bit)
if (TargetCrc == CRC.ConvertToLittleEndian32(crc_File))
{
return(FileEncoding.LittleEndian32);
}
//if rom is Little Endian 16 bit
else if (TargetCrc == CRC.ConvertToLittleEndian16(crc_File))
{
return(FileEncoding.LittleEndian16);
}
return(FileEncoding.Error);
}
