[alsa-devel] [pulseaudio-discuss] alsa ucm in pulseaudio

[Mark Brown]

On Fri, Oct 14, 2011 at 10:57:08AM +0200, David Henningsson wrote:

> There is also the "Use Case" concept in UCM, Is there always exactly
> one verb for every use case? If not, one might wonder if "Use Case"
> or "Verb" is what should correspond to the "Profile" concept.

Yes, pretty much.

> As for ports, this again depends on what is mutually exclusive and
> what could be used in parallel, I vaguely remember "Modifiers" as
> something that could be used in parallel with existing streams, if
> so, they need to be separate sinks/sources.

Modifiers and Devices can both be used concurrently.

> Hmm, for every sink/source, there can only be one active port at a
> time. Also, ports on the same sink/source can be changed on the fly
> without restarting the stream. Does this fit with the description of
> a UCM "Device"?

Pretty much.