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

Jaroslav Kysela perex at perex.cz
Mon Nov 11 16:31:57 CET 2019


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

-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.


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