On Wed, 15 Oct 2003, Paul Davis wrote:
> >Well, i am not author of this program actually. It is xmms plugin
> >allowing to use ALSA for sound output (alsa-xmms-0.9). I only wanted to
> >modify it, to be able to use dmix. I see, that it is out of my abilities
> >:-( and, so i will have to conctact the author of it and ask him to
> >correct it. It is pitty, because it will take time (if they ever do it).
> >I thought, that ALSA interface is not dependent on way, how it is opened
> >(because the same code with "hw:0:0" instead of "default" worked
> >perfectly) or did not i comprehend anything?. I would like to
> >understant, why opening "hw:0:0" works and only replacing it by
> >"default" does not. It seems to mee very dificult for developpers....
>
> it would have helped enormously if you had stated that you were
> talking about alsa-xmms up front. its a known and important piece of
> code, and one that someone here is much more likely to fix than (sorry
> to say) your own pet project.
>
> takashi or jaroslav - does using dmix involve any threads? could the
> alsa-xmms plugin be making calls to some xmms error code from a
> non-GUI thread?
The dmix plugin does not use any threads and should be thread safe.
I think that the xmms code does not conform to the ALSA API. For example,
the application MUST use snd_pcm_poll_descriptors_revents() to obtain
the real event from poll(). And so on...
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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