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#94253 - 16/05/2002 17:04 Size limit on the current playlist being remember?
Chuck
member

Registered: 06/06/2001
Posts: 183
Is there some type of size limit on the current playlist being remember when power is pulled from the player? I can shuffle all playlists on the player, which has a lot of cross references, and that will be lost at the next power cycle. I tried saving it in a boomark and that didn't work either. Shuffling all playlists results in 11625 unique tracks and the current position will be lost when power is pulled. Shuffling the complete albums playlist results in 11594 tracks and the current position is saved across power cycles.

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#94254 - 16/05/2002 17:14 Re: Size limit on the current playlist being remember? [Re: Chuck]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31600
Loc: Seattle, WA
What version of the software are you using? I seem to recall that the size limit was increased in 2.0, but I could be wrong.
_________________________
Tony Fabris

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#94255 - 16/05/2002 17:48 Re: Size limit on the current playlist being remember? [Re: tfabris]
Chuck
member

Registered: 06/06/2001
Posts: 183
Sorry, I forgot the details. It's a MK2a running 2.0 Beta 11.

I just deleted a few tracks, with 11547 entries when shuffling the entire contents and it was remembered across power cycles. I must be right on the border of some limit. I've actually had over 12000 tracks on the unit and the playlist was recalled across power cycles. That was before I did a lot of cross-referencing though.

I'm just wondering how the limit is determined, as I still have a bit of cross-referencing that I need to do and I seem to have bumped up against a wall.

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#94256 - 17/05/2002 03:34 Re: Size limit on the current playlist being remember? [Re: Chuck]
peter
carpal tunnel

Registered: 13/07/2000
Posts: 4180
Loc: Cambridge, England
I'm just wondering how the limit is determined, as I still have a bit of cross-referencing that I need to do and I seem to have bumped up against a wall.

In the 2.0 betas, the remembered playlist is stored in a 256Kbyte block of the dynamic data partition. This block has a 512-byte header, and the remaining (262,144-512) bytes are used for playlist information.

In that playlist information, each track takes up 12 bytes, and second and subsequent references to the same track take another 4 bytes each. So if you have, say, 4 references to each track (perhaps in artist, album, genre and year playlists) you'll have room for (262,144-512)/(12+3*4) or 10,901 tracks.

I think we talked about increasing this (because, frankly, 10,901 is starting to sound like not very many) but I don't think we've actually done so yet. It shouldn't be too hard to increase it to (512,000-512)/(8+3*4) or 25,574 tracks.

There is currently a hard limit of 28,656 (total of tracks and playlists) for other reasons.

Peter

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#94257 - 17/05/2002 08:35 Re: Size limit on the current playlist being remember? [Re: peter]
Chuck
member

Registered: 06/06/2001
Posts: 183
Thanks a lot for the details, I'm currently riding right on the borderline. I'll finish my cross-referencing and hopefully the increase will make it into a release shortly.

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