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I just wanted to provide an update regarding the pregap problem I have been
having with XLD.
I have now also tried a Plextor 712, Plextor 716 and Plextor 755 drive with XLD
version 20131102 (145.0) on Mac OS 10.9.1. All three drives exhibit the same
problem (some pregaps are not detected). It seems that there is something
unique about Plextor and how it interacts with XLD during pregap detection.
Original comment by lalla.ch...@gmail.com
on 19 Feb 2014 at 4:31
More information (I don't know if this is helpful).
I have been comparing the pregaps as detected with a Plextor 716 and an LG
GS31N drive. I noticed that while the Plextor 716 fails to detect all of the
pregaps correctly, it does detect all the ISRC data correctly. I am not sure if
this information is in the same subchannel, but it seems odd to me that ISRC
data is detected but not pregap information.
I also tried detecting pregaps with the Plextor drive on the same disc using
the drutil subchannel command in terminal. In terminal all pregaps are
correctly detected, which suggests that the Plextor drive is not damaged.
Original comment by lalla.ch...@gmail.com
on 26 Feb 2014 at 6:29
Well, Plextor drives have a different format for subchannel data (uses non-BCD
number for some fields), and XLD has a special routine for it. It was
introduced in version 20110924 as a response to the issue 40. It is difficult
for me to investigate the problem because I don't have a drive.
Your behavior when using version 20110821 and earlier might be helpful.
Original comment by tmkkmac
on 26 Feb 2014 at 9:12
Thank you for your response.
I tried using XLD version 20110821, and can report that no pregaps are detected
on any CDs using the Plextor 716 drive.
I read through issue 40, and I think this is a similar issue. With version
20110821 and earlier no pregaps are detected. With version 2011924 and later,
most pregaps are detected, but some are missing. Often, but not always, the
missing pregaps will be on the last track or two of the CD. I have tried
looking at quite a few CDs, but I have not been able to observe any pattern as
to why some pregaps are missing (simply looking at track lengths, track number,
pregap lengths, etc). If it would be helpful I can post some examples
(including terminal output).
Also, if there is a specific audio CD that would be useful to do testing with,
I can see if I have or can obtain it.
Original comment by lalla.ch...@gmail.com
on 27 Feb 2014 at 2:26
Then could you try this debug version
http://tmkk.undo.jp/xld/XLD_dev_140227.zip and report the debug messages?
The messages will be shown in Console.app window.
Original comment by tmkkmac
on 27 Feb 2014 at 4:03
Running dev_140227 on Mac 10.6.8 (I can also use 10.9.1 if that would be
better).
Using audio CD Blonde on Blonde by Bob Dylan, issued in 2004 by Columbia USA.
Total of 14 tracks.
For this disc, the Plextor drive fails to correctly detect the pregaps on Track
2, Track 3, and Tracks 10-14 (missing 7 pregaps total).
Console output is included in the attached text file.
Original comment by lalla.ch...@gmail.com
on 27 Feb 2014 at 7:34
Attachments:
OK, then how about this version? http://tmkk.undo.jp/xld/XLD_dev_140227_2.zip
Original comment by tmkkmac
on 27 Feb 2014 at 8:31
Running dev_140227_2. Some as above.
Now pregaps on Track 2 and Track 3 are detected!
Still missing on Tracks 10-14.
Console output is attached.
Original comment by lalla.ch...@gmail.com
on 27 Feb 2014 at 2:55
Attachments:
Strange. How about this? http://tmkk.undo.jp/xld/XLD_dev_140227_3.zip
Original comment by tmkkmac
on 27 Feb 2014 at 3:18
Runing dev_140227_3.
Still missing Tracks 10-14.
Console output attached.
Original comment by lalla.ch...@gmail.com
on 27 Feb 2014 at 3:40
Attachments:
This one (not a fix, just gathering more debug info)?
http://tmkk.undo.jp/xld/XLD_dev_140227_4.zip
Original comment by tmkkmac
on 27 Feb 2014 at 4:05
Sorry, if you've downloaded the file before seeing this message, please
download again.
Original comment by tmkkmac
on 27 Feb 2014 at 4:08
Running 140227_4.
Console output attached.
Original comment by lalla.ch...@gmail.com
on 27 Feb 2014 at 4:15
Attachments:
How about other discs? The same behavior?
Original comment by tmkkmac
on 27 Feb 2014 at 4:30
Disc 2, Nashville Skyline, 2004. Missing pregap last track (Track 10).
Disc 3, Greatest Hits, 1988. Missing pregap last track (Track 10).
Disc 4, BoB, MFSL SACD, 2014. Missing pregap on Tracks 10-14.
Console output for 3 discs attached.
Maybe it is having trouble detecting pregaps for Track numbers 10 or larger?
Original comment by lalla.ch...@gmail.com
on 27 Feb 2014 at 4:47
Attachments:
Disc 5 Anthology Disc 1. Missing pregaps for Tracks 11-28. Tracks 29-34
correctly have no pregap.
It does seem to be a problem with Tracks 10 or larger.
Console Output attached.
Original comment by lalla.ch...@gmail.com
on 27 Feb 2014 at 4:58
Attachments:
Good point. So the track number should also be converted from hex to BCD?
Hopefully the last fix: http://tmkk.undo.jp/xld/XLD_dev_140227_5.zip
Original comment by tmkkmac
on 27 Feb 2014 at 5:04
I think you fixed it!
All 5 discs now correctly read pregap data with the Plextor drive!
I noticed some subchannel CRC errors are still reported in Console with some
discs and they are not reported for the same discs using a different drive
(attached is Console report for Disc 5 with Plextor). I am not sure if this
matters though, as again all pregap data is correct.
Original comment by lalla.ch...@gmail.com
on 27 Feb 2014 at 6:37
Attachments:
It should be random errors caused by scratches or dusts.
For example:
{0x01,0x02,0x01,0x00,0x11,0x13,0x00,0x14,0x37,0x63,0xb8,0xa5,0x00,0x00,0x00,0x00
}
should be
{0x01,0x02,0x01,0x00,0x11,0x13,0x00,0x04,0x37,0x63,0xb8,0xa5,0x00,0x00,0x00,0x00
}
^
and contains 1-bit error.
>and they are not reported for the same discs using a different drive
The debug version I posted doesn't report errors for non-plextor drives.
Original comment by tmkkmac
on 28 Feb 2014 at 9:56
Got it.
Thank you so much for your help!
I really appreciate you taking the time to work on this issue.
I will be looking forward to the next update:)
Original comment by lalla.ch...@gmail.com
on 1 Mar 2014 at 5:40
Hello, I am very sorry to bother you again.
I was just wondering, is there any reason I should not use XLD_dev_140227 with
my Plextor drive while waiting for the next official update? I am excited to
start using my Plextor for rips:)
Thank you again for your help!
Original comment by lalla.ch...@gmail.com
on 22 Apr 2014 at 11:23
Use at your own risk.
Original comment by tmkkmac
on 23 Apr 2014 at 1:16
Ok, I will wait until the next update:)
Thank you for your response!:)
Original comment by lalla.ch...@gmail.com
on 24 Apr 2014 at 1:58
Fixed in version 20140427
Original comment by tmkkmac
on 4 May 2014 at 3:16
Original issue reported on code.google.com by
lalla.ch...@gmail.com
on 18 Jan 2014 at 4:11