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Playback skips with Jewels
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Topic: Playback skips with Jewels (Read 11282 times)
danhibiki
Member
Posts: 40
Playback skips with Jewels
«
on:
April 01, 2006, 12:28:40 PM »
If I play jewels while listening to music (I've tested with vorbis and mp3), after a while the song starts to skip like crazy... is it a known issue?
This same behaviour sometimes occurs when I'm only listening to vorbis/mp3, but it is not every time, so I can't reproduce it or point the cause to the problem
But on Jewels is "easy" to make playback go insane...
It doesn't seem to be related to codec optimization, because the same songs can be played perfectly too...
Also, sometimes the buffer seems to be emptied causing a little pause on the playback, but again, I can't reproduce it well, sometimes it pauses, sometimes not...
Are those known bugs?
I'm using a 4GB nano, by the way.
Thanks
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Llorean
Member
Posts: 12931
Re: Playback skips with Jewels
«
Reply #1 on:
April 01, 2006, 12:32:04 PM »
What do you mean "the same songs played perfectly too"
How long does it take for the songs to skip. What kind of "skipping like crazy" occurs? If you don't press anything for a few seconds or longer, does it go back to playing smoothly?
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danhibiki
Member
Posts: 40
Re: Playback skips with Jewels
«
Reply #2 on:
April 01, 2006, 12:40:12 PM »
If I play those exact same songs without playing Jewels, they can be perfectly handled by Rockbox... I don't know how to explain correctly, I'm not the best english speaker
It normally takes a few minutes... 5-10 minutes, I suppose. After it starts this weird behaviour, it never returns to normal again, even if I stop and restart the playback or quit jewels.
While in this "crazy skipping" status, I also noticed that the jpg's aren't decoded correctly (but I forgot to mention that).
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Llorean
Member
Posts: 12931
Re: Playback skips with Jewels
«
Reply #3 on:
April 01, 2006, 12:42:06 PM »
See, the songs playing fine outside Rockbox doesn't mean anything related to codec optimization since clearly Rockbox needs more CPU power for Music + Game than just Music.
But, the information that the bitmaps aren't displayed properly and that the music doesn't return to normal after quitting is much more useful. I would suggest filing an actual bug report, describing exactly what happens.
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danhibiki
Member
Posts: 40
Re: Playback skips with Jewels
«
Reply #4 on:
April 01, 2006, 12:46:53 PM »
Yeah, it makes sense
But it's weird, since the CPU can handle both fine within this 5-10 minutes
Anyway, I'll fill a bug report. Thanks for the attention, Llorean
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Llorean
Member
Posts: 12931
Re: Playback skips with Jewels
«
Reply #5 on:
April 01, 2006, 12:49:58 PM »
Well, arguably what *could* be happening is that the CPU is just barely too slow, so while it is filling the PCM buffer, it's emptying just a little bit faster, and gradually runs out.
Though honestly, if it's garbling the graphics, I think that's unlikely the cause. If you hadn't said the graphics were messed up, I would've been fairly certain it was just an optimization case.
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Suntiger
Member
Posts: 96
Re: Playback skips with Jewels
«
Reply #6 on:
April 01, 2006, 12:57:36 PM »
I don't know about the nano, but I don't get this at all on the 5G, even when I play Jewels for 30 minutes at a time while listening. Don't the 2 models have the same CPU?
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Llorean
Member
Posts: 12931
Re: Playback skips with Jewels
«
Reply #7 on:
April 01, 2006, 01:03:09 PM »
Honestly, I've never gotten it in Jewels either on my Nano 4gb, but it could be a recent bug, or something.
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danhibiki
Member
Posts: 40
Re: Playback skips with Jewels
«
Reply #8 on:
April 01, 2006, 01:34:03 PM »
Okay, reported on the bugtracker
And I always had this kind of problem with Rockbox, but before I didn't even had to be playing Jewels to get this...
I think it got better after variable CPU frequency was implemented. So now I'm guessing it may be related to the full load of the CPU, but is just a guess, I don't know if at the same time some optimizations was done to the codecs...
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Michael7
Member
Posts: 68
Re: Playback skips with Jewels
«
Reply #9 on:
April 01, 2006, 01:40:45 PM »
No problems with my 5g too
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Llorean
Member
Posts: 12931
Re: Playback skips with Jewels
«
Reply #10 on:
April 01, 2006, 01:47:36 PM »
What do you mean "always had this sort of problem" exactly?
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danhibiki
Member
Posts: 40
Re: Playback skips with Jewels
«
Reply #11 on:
April 01, 2006, 01:56:27 PM »
The playback would start to skip a lot after some time listening to music... In the beggining it's fine, Rockbox playbacks smoothly, then after some period of time every song would skip a lot (the jpg's would not be decoded correctly, etc)...
This happened with older versions... Now it happens mainly while I play Jewels.
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Llorean
Member
Posts: 12931
Re: Playback skips with Jewels
«
Reply #12 on:
April 01, 2006, 02:01:44 PM »
Just to clarify, they're bitmaps not jpegs. If you say "Jpegs don't decode" people will expect that you're talking about the jpeg viewer specifically.
It almost sounds to me like your iPod could be overheating...
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danhibiki
Member
Posts: 40
Re: Playback skips with Jewels
«
Reply #13 on:
April 01, 2006, 02:10:22 PM »
Well, I'm talking about the jpeg viewer...
I don't know if you thought that the graphics of Jewels were getting corrupted, but no, I was talking about decoding a jpg with the jpeg viewer... those get corrupted while in this "crazy skipping" mode
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Llorean
Member
Posts: 12931
Re: Playback skips with Jewels
«
Reply #14 on:
April 01, 2006, 02:27:06 PM »
Odd. Are these jpegs that audio playback has to stop for, or jpegs that are small enough that audio continues playing?
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