[alsa-devel] about UCM on bluetooth headset
guanqun.lu at intel.com
Mon Aug 22 15:29:08 CEST 2011
On Mon, Aug 22, 2011 at 06:46:02PM +0800, Liam Girdwood wrote:
> On 22/08/11 07:19, Lu Guanqun wrote:
> > Hi Liam,
> > In alsa-libs:include/use-case.h, there are below lines:
> > * a conversation etc. The device describes the physical audio capture and playback
> > * hardware i.e. headphones, phone handset, bluetooth headset, etc.
> > I'm not quite clear about how to set a use case for bluetooth headset.
> > According to my understanding, bluetooth doesn't fall into the category
> > of ALSA, therefore there's no such direct devices for it.
> > Could you shed some lights on this? What's the best practises to use UCM
> > with bluetooth?
> This is intended for systems where the BT audio is integrated in some
> way with the other audio ICs. It's intended to configure the other
> audio devices to allow use cases involving BT in such systems.
Thanks, I got your point. For example, where BT HSP is implemented over
ALSA PCM, it's most probably exposed as an ALSA device, then we can
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