Re: [Jack-Devel] ALSA PCM multi plugin and xruns

On Tue, Dec 11, 2012 at 10:25 AM, Paul Davis <[hidden]> wrote:
>
> On Tue, Dec 11, 2012 at 1:22 PM, Devin Anderson <[hidden]>
> wrote:
>> What about cases where the word clock sync of a sound card isn't quite
>> as tight as it should be?  Does ALSA have control over that?
>
> my understanding is that word clock sync is all-or-nothing. you're either
> precisely in sync or not at all.

Hmmm.

Do you know offhand if `snd_pcm_link()` is supposed to synchronize the
poll file descriptors such that the poll file descriptors of the
master aren't set with events until both the master card and the card
it's linked to are ready with I/O?  If so, then the bug is probably
there somewhere.  If not, then I wonder how this synchronization is
supposed to happen.

-- 
Devin Anderson
surfacepatterns (at) gmail (dot) com

blog - http://surfacepatterns.blogspot.com/
psinsights - http://psinsights.googlecode.com/
synthclone - http://synthclone.googlecode.com/

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