Re: No snd_pcm_resume_all() ?

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Mon, 2006-04-17 at 21:36 -0400, Lee Revell wrote:
> On Tue, 2006-04-18 at 11:27 +1000, Benjamin Herrenschmidt wrote:
> > How are apps supposed to know about system suspend/resume ? There is
> > no proper way to do so that works accross architectures and
> > suspend/resume methods so far ... I yet have to see a single audio app
> > that knows about it ... (tried various KDE based things like Amarok,
> > mpg123, xine, ... ) 
> 
> They don't specifically have to know about suspend and resume - from the
> application point of view it just looks like an underrun - poll() or
> write() will return an error code so the app checks the state with
> snd_pcm_state() and recovers if it is SND_PCM_STATE_XRUN or
> SND_PCM_STATE_SUSPENDED.
> 
> Are any of these native ALSA apps, or do they all go through artsd which
> uses the OSS emulation layer?
> 
> Does it work OK with aplay?

I'm not sure what they use at this point, I'll check later. I think I
didn't enabled artsd and amarok is using xine engine so it's probably
using alsa directly though.

Ben.




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