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#161374 - 14/05/2003 08:23 Erasing the song statistics without erasing EQ?
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
I'm in the middle of a big project where I'm wiping out the songs from the empeg disk drive and replacing them en masse with higher bitrate copies.

I want to save the data currently on the dynamic data partition that contains my EQ presets and Tuner presets, so a complete Builder-Image run is something I would like to avoid.

I could just delete the existing songs and put the new songs onto the player. But if I recall correctly, there is still a bug where things like the "plays" count are still there, stored on a per-FID basis, after you delete a song. So when I replace all the songs, the plays counts will be incorrect for each of the songs (since the FIDs will change).

One option would be to hand-select each song and do "replace tune" to preserve the FID number, but I don't want to do that 3500 times.

I don't mind wiping all of the "plays" counts to zero and starting over, but I don't want to have wrong "plays" counts for the songs.

Does anyone have any ideas about how to easily erase the song statistics from the dynamic data partition without erasing the other data stored there? For instance, I could back it up to a file using the instructions in the FAQ, then copy that file to my PC, edit it with UltraEdit, and copy it back to the empeg. I just would need to know what range of bytes to edit (and could I get away with just zeroing them out?).
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Tony Fabris

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#161375 - 14/05/2003 08:44 Re: Erasing the song statistics without erasing EQ? [Re: tfabris]
Chuck
member

Registered: 06/06/2001
Posts: 183
You can set the plays counter using JEmplode. It's on the advanced property tab under 'play_count' if I remember correctly.

-Chuck

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#161376 - 14/05/2003 08:48 Re: Erasing the song statistics without erasing EQ? [Re: tfabris]
peter
carpal tunnel

Registered: 13/07/2000
Posts: 4180
Loc: Cambridge, England
But if I recall correctly, there is still a bug where things like the "plays" count are still there, stored on a per-FID basis, after you delete a song.
The operation of downloading a FID should erase that data; if the bug is still there in 2.0-final, rereport it. But in that case, you can use

dd if=/dev/zero bs=512 skip=4096 count=28672 /dev/hda3

to zero out the per-fid dynamic data without touching the other stuff. Be careful typing that, as you will hose everything badly if you do it to the wrong partition.

Peter

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#161377 - 14/05/2003 10:52 Re: Erasing the song statistics without erasing EQ? [Re: peter]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
The operation of downloading a FID should erase that data; if the bug is still there in 2.0-final, rereport it.
You know, now that you mention it, I never checked that in 2.0 final. I just remember that it was there in some of the 2.0 betas and I didn't see it specifically noted as "fixed" in any of the release notes. On reflection, you're right: just because it wasn't specifically reported as fixed doesn't mean it wasn't fixed. So I should verify that it's even a problem at all before I panic. Maybe I don't have to do anything.

dd if=/dev/zero bs=512 skip=4096 count=28672 /dev/hda3
Cool. I'm going to put that in the FAQ. Is there anything special that needs to precede the command, such as mounting the drives read-write?
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Tony Fabris

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#161378 - 14/05/2003 11:01 Re: Erasing the song statistics without erasing EQ? [Re: Chuck]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
You can set the plays counter using JEmplode. It's on the advanced property tab under 'play_count' if I remember correctly.
I thought that didn't work to change the value. Anyone know for sure?
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Tony Fabris

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#161379 - 14/05/2003 11:12 Re: Erasing the song statistics without erasing EQ? [Re: peter]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
Hey, Peter, which statistics does that erase? Just the plays, or does it erase all of the statistics including last time played, BPM, the volume graph for SeekTool, etc.?

(Those don't matter to me personally, I just want to make sure the FAQ entry is complete on this point.)
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Tony Fabris

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#161380 - 14/05/2003 11:35 Re: Erasing the song statistics without erasing EQ? [Re: tfabris]
Chuck
member

Registered: 06/06/2001
Posts: 183
I know the changing play_count works as I used it last night.

I don't think changing play_last works though, it's been quite a while since I tried that.

-Chuck

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#161381 - 14/05/2003 11:42 Re: Erasing the song statistics without erasing EQ? [Re: Chuck]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
I know the changing play_count works as I used it last night.
Can you do it for a group of tracks? Say, all 3500 tracks on the player?
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Tony Fabris

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#161382 - 14/05/2003 12:51 Re: Erasing the song statistics without erasing EQ? [Re: tfabris]
Chuck
member

Registered: 06/06/2001
Posts: 183
I zero-ed a complete playlist, so it should be no problem. Just make sure to press <Enter> after entering the value for 'play_count' on the advanced property page, otherwise JEmplode will ignore the new value.

-Chuck

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#161383 - 14/05/2003 15:43 Re: Erasing the song statistics without erasing EQ? [Re: tfabris]
Roger
carpal tunnel

Registered: 18/01/2000
Posts: 5683
Loc: London, UK
Is there anything special that needs to precede the command, such as mounting the drives read-write?

Nope. That blats directly onto the dynamic data partition. As you know, the read-only/read-write thing is only an attribute of how the partition is mounted; and since the dynamic data partition is never mounted...

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-- roger

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#161384 - 14/05/2003 15:44 Re: Erasing the song statistics without erasing EQ? [Re: tfabris]
Roger
carpal tunnel

Registered: 18/01/2000
Posts: 5683
Loc: London, UK
Hey, (someone), which statistics does that erase?

All of the per-FID dynamic data -- play count, track profile, etc.
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-- roger

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#161385 - 14/05/2003 15:46 Re: Erasing the song statistics without erasing EQ? [Re: Roger]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
Thanks, Roger!

And thanks, Peter, for the command. I'll find out soon whether I even need to use it.
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Tony Fabris

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#161386 - 15/05/2003 21:43 Re: Erasing the song statistics without erasing EQ? [Re: tfabris]
Chuck
member

Registered: 06/06/2001
Posts: 183
Just thought I would let you know, I ran across one tonight that wouldn't change. I can't tell you what is different, but I thought I should give you a heads up as you were going to do a massive tune swap.

-Chuck

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#161387 - 16/05/2003 00:34 Re: Erasing the song statistics without erasing EQ? [Re: Chuck]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
Thanks! I'm uploading the first batch of tunes tonight, we'll see how it goes. If I have to zero them out, I'll use that shell command.
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Tony Fabris

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#161388 - 16/05/2003 00:45 Re: Erasing the song statistics without erasing EQ [Re: peter]
ricin
veteran

Registered: 19/06/2000
Posts: 1495
Loc: US: CA

dd if=/dev/zero bs=512 skip=4096 count=28672 /dev/hda3


Shouldn't that be:

dd if=/dev/zero bs=512 skip=4096 count=28672 of=/dev/hda3


?
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Donato
MkII/080000565
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ricin.us

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#161389 - 16/05/2003 01:07 Re: Erasing the song statistics without erasing EQ [Re: ricin]
peter
carpal tunnel

Registered: 13/07/2000
Posts: 4180
Loc: Cambridge, England
Shouldn't that be:
Oops. Yes, of course it should.

Peter

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#161390 - 16/05/2003 07:54 Re: Erasing the song statistics without erasing EQ [Re: ricin]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
Thanks! Corrected in FAQ.
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Tony Fabris

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#161391 - 16/05/2003 10:06 Re: Erasing the song statistics without erasing EQ? [Re: peter]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
The operation of downloading a FID should erase that data; if the bug is still there in 2.0-final, rereport it.
From my intial checks, this seems to be working as intended now.

From my last batch of fresh uploads, all the files were at zero plays except for one which was at 20.

I would consider the "20" a bug, however this batch of uploads crashed after a few hundred files, and I had to hand-delete the database file and rebuild it before the player worked properly again. So it's conceivable that this file is the one it crashed on.

The crash was weird. I suspect something screwed up on my LAN during the night and caused a hiccup in the network. The song uploads started stalling with 8004003E errors at some point, and everything went downhill from there.
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Tony Fabris

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#161392 - 20/02/2004 02:28 Re: Erasing the song statistics without erasing EQ? [Re: tfabris]
CHiP
enthusiast

Registered: 08/06/1999
Posts: 345
Loc: New Jersey, USA
Tony,

you should upgrade your faq about this, since i almost posted a new post asking how to change the play_count since in emplode when i "replace tune" it resets to 0, which is dumb, why would you want to do that?
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-CHiP

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#161393 - 20/02/2004 12:09 Re: Erasing the song statistics without erasing EQ [Re: CHiP]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
I just added a line saying some statistics could be edited with Jemplode. Is that what you meant?
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Tony Fabris

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