[alsa-devel] [PATCH 09/11] ucm: docs: Add EchoReferenceDev

[Jaroslav Kysela]

Dne 07. 11. 19 v 2:58 Curtis Malainey napsal(a):
> Sometimes userspace may want to use a reference channel to cancel echos
> when using video chat, this value identifies the device which carries
> that channel.
> 
> 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 9a10f390..e84f3f8f 100644
> --- a/include/use-case.h
> +++ b/include/use-case.h
> @@ -308,6 +308,9 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
>    *   - CoupledMixers
>    *      - Mixer controls that should be changed together.
>    *        E.g. "Left Master,Right Master".
> + *   - EchoReferenceDev
> + *      - If userspace wants an echo refence channel this value identifies the
> + *        device to be used.
>    *   - EDIDFile
>    *      - Path to EDID file for HDMI devices
>    *   - JackControl, JackDev, JackHWMute
> 

It's PCM device name like PlaybackPCM ? I would rename this to 
EchoReferencePCM then.

					Jaroslav

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