[pulseaudio-discuss] [UCM] usage howto
Arun Raghavan
arun.raghavan at collabora.co.uk
Tue Jan 8 20:29:18 PST 2013
On Mon, 2013-01-07 at 11:46 +0100, Soeren Grunewald wrote:
> Hi All,
>
> I've been testing pulseaudio-3.0 and now I have some questions. Is there
> any updated documentation available describing the usage of UCM in
> pulsaudio and can the current UCM implementation handle multiple
> soundcards? I plan to use two or three soundcards (all having there own
> UCM configuration) and I'd like to use them with "module-loopback".
>
>
> During testing I also run into some issues. With my current
> configuration [1], I get a double-free, due missing modifiers. I solved
> this with the attached patch [2]. But then I hit the assertation in file
> src/modules/alsa/alsa-ucm.c function ucm_get_device_property:250
>
> pa_assert(device->playback_channels || device->capture_channels);
>
> I assume that this is the result of some missing entries in the UCM
> config, but I can't see my issue.
I'm given to understand that every device must have PlaybackChannels or
CaptureChannels defined.
-- Arun
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