[alsa-devel] [pulseaudio-discuss] Using UCM with PulseAudio

Tanu Kaskinen tanuk at iki.fi
Fri Jun 15 19:38:08 CEST 2012

On Fri, 2012-06-15 at 18:34 +0100, Mark Brown wrote:
> On Fri, Jun 15, 2012 at 06:28:51PM +0100, Liam Girdwood wrote:
> > On Fri, 2012-06-15 at 15:11 +0300, Tanu Kaskinen wrote:
> > > This sort of hardware causes trouble for the planned routing system, at
> > > least as I have envisioned it to behave. My vision has been that the
> > > routing logic in pulseaudio would enable and disable ports based on the
> > > streams that exist and their properties. In the OMAP4 case, there aren't
> > > any streams created when a cellular call starts, and therefore the
> > > routing logic doesn't know that it should do something.
> > This is quite common in the smartphone voice call use case. A lot of
> It's more than common, I'm only aware of one phone design which does
> route the audio via the CPU on call (the N900).  Anything that can't
> cope with bypassed on call audio is going to struggle.

N9 also routes the audio via the CPU. Now you know two phone designs :)


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