Support and General Use > Audio Playback, Database and Playlists
Crossfade broken?
Frankenpod:
--- Quote from: chrisjj on December 23, 2016, 08:03:45 PM ---
--- 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.
--- End quote ---
I'm not clear what this means. Are you saying with three tracks (and cross-fade enabled) it just skips the middle-track entirely? Does it fade from the first to the third track? Or just no fade effect at all, but it jumps straight from 1 to 3?
Frankenpod:
--- Quote from: jhMikeS on December 24, 2016, 10:00:45 AM ---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.
--- End quote ---
Is this only with the zen (or the zen simulator) or with any player? Does it happen with all formats or only flacs?
Still seems to be working on my ipod, though have only tried it with very long playlists of mp3s (and shuffle play enabled).
chrisjj:
--- Quote from: jhMikeS on December 24, 2016, 10:00:45 AM ---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.
--- End quote ---
I've found a third Crossfade issue which seems related and hence may help you to know.
Without Crossfade (settings http://i.imgur.com/Gakuydi.png ) , Files Select wihle track 1 playing start play on track 1, as expected:
1 In Files http://i.imgur.com/Rpperbk.png , press Select - see http://i.imgur.com/t0d2EJr.png
2 Press Select
3 In Files, http://i.imgur.com/kPc7V8U.png , press Select - see http://i.imgur.com/7lQcNhv.png . I see track 1.
With Crossfade (same settings as above http://i.imgur.com/2ZN8F9S.png ) Files Select during track 1 can start play on track 2.
1 In Files http://i.imgur.com/nFZi3kz.png , press Select - see http://i.imgur.com/sJXYorY.png .
2 Press Select
3 In Files, http://i.imgur.com/Ehcqi32.png, press Select - see http://i.imgur.com/7lQcNhv.png . I expected track 1. I see track 2.
chrisjj:
--- Quote from: Frankenpod on December 24, 2016, 10:40:54 AM ---
--- Quote from: chrisjj on December 23, 2016, 08:03:45 PM ---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.
--- End quote ---
I'm not clear what this means. Are you saying with three tracks (and cross-fade enabled) it just skips the middle-track entirely?
--- End quote ---
Yup.
--- Quote from: Frankenpod on December 24, 2016, 10:40:54 AM ---Does it fade from the first to the third track? Or just no fade effect at all, but it jumps straight from 1 to 3?
--- End quote ---
It jumps straight from 1 to 3.
--- Quote from: Frankenpod on December 24, 2016, 10:43:15 AM ---Is this only with the zen (or the zen simulator) or with any player? Does it happen with all formats or only flacs?
--- End quote ---
It's not just on ZEN - it is on iPod 4g simulator too. I haven't tried others.
It's not just on the WAV format of the instance in my report - it is on MP3 too. I've not tried others.
chrisjj:
Mike,
A longer playlist shows this track fail repeats.
With crossfade on manual track skip enabled, and manual track skip performed, every even-numbered track fails to play: https://www.dropbox.com/s/vo02h6l2pubh27m/RB%20Crossfade%20fail%20on%20long%20list%20-%20manual%20track%20skip%20performed%20%3D%20fail.mpg?dl=0
With no manual track skip performed, every track plays -- as expected. https://www.dropbox.com/s/oi1bdiq50foto2r/RB%20Crossfade%20fail%20on%20long%20list%20-%20no%20manual%20track%20skip%20performed%20%3D%20no%20fail.mpg?dl=0
This bug can fail the odds too. https://www.dropbox.com/s/l5zi1e0kivl2tto/RB%20Crossfade%20fail%20on%20long%20list%20-%20manual%20track%20skip%20performed%20%3D%20fail%2C%20odd.mpg?dl=0
Interesting to see that crossfade code must have a state variable that's unintentionally hanging over somehow.
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