[alsa-devel] alsa-jack issues

[Takashi Iwai]

At Sat, 6 Sep 2014 07:09:17 +0200,
Radoslaw Szkodzinski wrote:
> 
> Hello,
> 
> A recent change in alsa-plugins 1.0.28 alsa-jack has changed the poll semantics.
> This breaks audacious and mpv, perhaps more applications.

Could you elaborate more?  What's broken and how?

> The regression is caused by:
> Commit: 9217377337cdceb62abeb5969112b738bb5cd551
> jack: fix polling and recovering

Let's add the patch author to Cc.

> This might or might not be related to lack of
> snd_pcm_poll_descriptor_revents call or the use of a timer instead of
> repolling.
> 
> Another major problem is the lack of handling of DRAINING state. This
> breaks short sample playback with aplay and possibly other
> applications. That also was present in older alsa-jack and is not a
> regression.

A fix patch is welcome :)  I guess this won't be too difficult to
implement.


Takashi