Hi Arun, On Mon, Aug 5, 2013 at 8:43 PM, Arun Raghavan <arun.raghavan at collabora.co.uk> wrote: > On Mon, 2013-08-05 at 11:43 -0700, Felipe Tonello wrote: >> Hi all, >> >> I'm using UCM configurations to handle multiple devices and >> playback/capture mixer controls. It seems that PA UCM implementation >> just store the PlaybackVolume PlaybackSwitch properties but doesn't >> make any usage of it. >> >> What I want to do is basically to be able to change hardware volume >> instead of just software volume. When I plug a Headphone, for >> instance, I want PA to change the volume of the alsa control that I >> specified by PlaybackVolume in the UCM file not just the sink volume. >> >> Is that possible to do? Does it require a patch or some work? > > It is possible of course, but hasn't been implemented (yet). I will probably need this use case. I hope to send a patch in a few weeks to come. > >> Also, jack support for UCM seems to have a bug. For when using UCM >> support, when I start PA or change a card profile with a jack >> previously plugged, it doesn't recognizes that unless I unplug and >> plug again. > > David was looking into hooking up jack detection with UCM, so might have > some more useful information for you. Actually I realized was probably a problem in my UCM configuration. Now it seems to be ok. > >> Any comments on that as well? >> >> OBS: I'm using PA 3.0. > > You'd also mentioned the problem with modem PCMs on IRC. I think we > really don't have much choice here but to go with the > PA_SINK_ALWAYS_RUNNING flag that I'd posted earlier, coupled with adding > a field in the UCM to signal that this needs to be set. I saw your patch. It was not upstreamed right? Also, how would you set that flag in run-time? > > Yes, we would ideally like for these paths to be set up in the kernel, > but pragmatically, that seems to be quite unlikely to happen on the > Android kernels (at least it hasn't in the last year and a half). Do you have more information about that? Because here I have control over the kernel, so we could implement there if needed. Regards, Felipe Tonello
