> > I've just compared the RW vs RW_RAW output from my drive, and it appears > that the RW version has 72 byte CDG sections vs 96 bytes for RW_RAW. I > initially thought that must be the 96 bytes of CDG data without the 24 > parity bytes, but it turns out that strangely the drive is returning > only the first 3 24-byte CDG packets (including the parity bytes), and > missing the fourth. So it's only giving me 3 out of every 4 CDG packets > in RW mode. It also happens to swap the bytes in every 16 bit word.
Very odd. > > So it looks like this drive is giving me dud data in RW mode. It seems that that might be very common. > Maybe it > expects to send 72 bytes due to dropping the parity bytes, but just > forgets to drop the parity bytes. Given your experience with your NEC > drive purporting to send RW data but sending nothing of the sort, I'm > thinking that this is an issue with my drive. I'll be interested to hear > what you're getting out of your other drive. Hopefully it will either be > the full 96 bytes, or 72 bytes but with the parity bytes removed. So far it look like I'm getting 96 bytes. I have only ripped the "injected disk" which I created with all the lower nibbles of the subcode bytes filled with A (hex). So I have no way of knowing if the drive really is returning RW (deinterleaved) data or just defaulting to RW_RAW. I have modified the subcode injection program so that it labels the lower nibble of each byte (from 0 to F) I will write this on the liteon and read it back in RW mode to see if the drive tries to deinterleave the subcode. (the only reasons I don't use the whole subcode byte is that I'm worried about overwriting p and q channels and confusing the drive) After that I'll try ripping a real CDG disk and run it through cdgrip to see if the I get usable data. Drew Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Pykaraoke-discuss mailing list Pykaraoke-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pykaraoke-discuss
