private static int ReadSubChannel <T>(UnixFileDescriptor fd, CDDataFormat format, byte track, out T data) where T : struct
{
var req = new ReadSubChannelRequest {
address_format = CDAddressFormat.CD_LBA_FORMAT,
data_format = format,
track = track,
data_len = Util.SizeOfStructure <T>(),
};
req.data = Marshal.AllocHGlobal(new IntPtr(req.data_len));
try {
var rc = NativeApi.SendIORequest(fd.Value, IOCTL.CDIOCREADSUBCHANNEL, ref req);
if (rc == 0)
{
data = Util.MarshalPointerToStructure <T>(req.data);
}
else
{
data = default(T);
}
return(rc);
}
finally {
Marshal.FreeHGlobal(req.data);
}
}
private static extern int SendIORequest(int fd, IOCTL command, ref ReadSubChannelRequest request);
