Support and General Use > Audio Playback, Database and Playlists
Crossfade broken?
chrisjj:
Thanks for replying.
--- Quote from: jhMikeS on December 19, 2016, 12:14:05 PM ---How long are each of the files?
--- End quote ---
10s. This is evident in the video.
--- Quote from: jhMikeS on December 19, 2016, 12:14:05 PM ---It's possible we would introduce nicer behavior for very short files.
--- End quote ---
I've seen the behaviour for short files and it was reasonable. It skipped some fade, but never any audio.
--- Quote from: jhMikeS on December 19, 2016, 12:14:05 PM --- Can you post the very ones you were using?
--- End quote ---
I lost the precise installation shown in my video, but I recreated it enough to reproduce the problem. Here are the files: https://www.dropbox.com/s/pkethfym31tkmuc/RB%20Crossfade%20fail%20tracks.zip?dl=0
Plus the whole installation (pruned of rocks and fonts) in case it helps: https://www.dropbox.com/s/si71db02cy4lotu/RB%20Crossfade%20fail%20on%20creativezen-sim-w32%205b52ff2-161212.zip?dl=0
chrisjj:
--- Quote from: Frankenpod on December 21, 2016, 02:01:44 PM ---
--- Quote from: chrisjj on December 17, 2016, 11:51:48 AM ---Thanks. Useful info.
Which iPod model of these http://rasher.dk/rockbox/simulator/
And what audio format?
--- End quote ---
Well, none of those (as I said) ipod Classic (informally known as 7.5 gen). Actual hardware, not the simulator. Though the ipod Video simulator is phenomenologicaly(!) the same.
mp3.
Works perfectly.
--- End quote ---
Thanks. Good to hear.
--- Quote from: Frankenpod on December 21, 2016, 02:01:44 PM ---Are you sure its the crossfade that is the bug?
--- End quote ---
No. hence the question :-) But if I turn off Crossfade, the problem disappears.
--- Quote from: Frankenpod on December 21, 2016, 02:01:44 PM ---And what build of rockbox are you using?
--- End quote ---
The simulator is creativezen-sim-w32 5b52ff2-161212.
--- Quote from: Frankenpod on December 21, 2016, 02:01:44 PM ---Occurs to me, perhaps its because its only a two-track playlist. Maybe its not seeing the final track of the playlist for some reason, so it thinks there's only one track? What happens if you use a longer playlist?
--- End quote ---
If I repeat Track 1 as Track 3, there's no change to the fail on Track 2, and Track 3 plays as expected.
Likewise if I repeat Track 2 as Track 3, there's no change to the fail on Track 2, and Track 3 plays as expected.
jhMikeS:
--- Quote from: chrisjj on December 23, 2016, 07:56:43 PM ---10s. This is evident in the video.
--- End quote ---
As we know, we couldn't see the second one. :)
--- Quote from: chrisjj on December 23, 2016, 07:56:43 PM ---I've seen the behaviour for short files and it was reasonable. It skipped some fade, but never any audio.
--- End quote ---
It's just an idea of what's happening. Hence, the file request.
--- Quote from: chrisjj on December 23, 2016, 07:56:43 PM ---I lost the precise installation shown in my video, but I recreated it enough to reproduce the problem. Here are the files: ...
--- End quote ---
Thanks!
chrisjj:
--- Quote from: jhMikeS on December 23, 2016, 09:06:38 PM ---
--- Quote from: chrisjj on December 23, 2016, 07:56:43 PM ---10s. This is evident in the video.
--- End quote ---
As we know, we couldn't see the second one. :)
--- End quote ---
We couldn't see the second one for long! :-) The second's duration shows as the 'time to go' number when its track title appears.
But perhaps we should not believe it, given at this point the track counter remains at 1 of 2, and when it does advance to 2 of 2, 'time to go' changes to zero -- on what looks like a bogus update.
This bogus update doesn't occur if I don't click Next, so perhaps it is a clue to the cause of the loss of the second track.
Also this bogus update doesn't occur with Crossfade off (regardless of whether I click Next), so perhaps it is independent (though related) issue with Crossfade.
jhMikeS:
I've got it narrowed down to notice that it happens when manual skip fade is enabled without any automatic fading. Weird, but at least it suggests it's not due to short track length and not a major glitch in the pcmbuf mixing. I also noticed playback ends abruptly even though the pcm buffer still has many seconds of audio remaining of the final track.
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