[alsa-devel] [PATCH 08/11] ucm: docs: Add CaptureChannelMap

[Curtis Malainey]

On Mon, Nov 11, 2019 at 7:32 AM Jaroslav Kysela <perex at perex.cz> wrote:
>
> Dne 07. 11. 19 v 2:58 Curtis Malainey napsal(a):
> > Explains to userspace how some channels may need to be rearranged. This
> > is useful for systems that may have DMIC pcms with dead channels that
> > will need remapping.
> >
> > Signed-off-by: Curtis Malainey <cujomalainey at chromium.org>
> > ---
> >   include/use-case.h | 3 +++
> >   1 file changed, 3 insertions(+)
> >
> > diff --git a/include/use-case.h b/include/use-case.h
> > index 31f9e4be..9a10f390 100644
> > --- a/include/use-case.h
> > +++ b/include/use-case.h
> > @@ -305,6 +305,9 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
> >    *      - Remap channels using ALSA PCM channel mapping API notation
> >    *        E.g. "2 3 0 1 -1 -1 -1 -1 -1 -1 -1" means, FL takes channel 2,
> >    *        FR takes channel 3, RL takes channel 0, RL takes channel 1.
> > + *   - CoupledMixers
> > + *      - Mixer controls that should be changed together.
> > + *        E.g. "Left Master,Right Master".
> >    *   - EDIDFile
> >    *      - Path to EDID file for HDMI devices
> >    *   - JackControl, JackDev, JackHWMute
> >
>
> I do not see which names are referred by this. It's for the snd_ctl interface
> or for the simple mixer ?
>
>                                                 Jaroslav
>
Yes, this would be referring to volume mixers in amixer.
> --
> Jaroslav Kysela <perex at perex.cz>
> Linux Sound Maintainer; ALSA Project; Red Hat, Inc.