[alsa-devel] stereo uac device control over mixer
Arijit De
arijit.de at geosemi.com
Mon May 11 17:28:52 CEST 2015
Hi Clemens,
I want to do Left/Right Mic mute independently,
but I dont see that kind of control is provided in alsamixer(GUI) for capture devices.
Is Left/Right Mic mute is supported ?
because I can see a api for the same
snd_mixer_selem_set_capture_switch (snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, int value);
Thanks
Arijit
________________________________________
From: Clemens Ladisch <clemens at ladisch.de>
Sent: Tuesday, May 5, 2015 7:15 PM
To: Arijit De; alsa-devel at alsa-project.org
Subject: Re: [alsa-devel] stereo uac device control over mixer
Arijit De wrote:
> AudioControl Interface Descriptor:
> bLength 9
> bDescriptorType 36
> bDescriptorSubtype 6 (FEATURE_UNIT)
> bUnitID 2
> bSourceID 1
> bControlSize 1
> bmaControls( 0) 0x03
> Mute Control
> Volume Control
These are the controls for the master channel.
> bmaControls( 1) 0x03
> Mute Control
> Volume Control
These are the controls for the mic's left channel.
> iFeature 0
The controls for the mic's right channel are missing.
There are no descriptors for playback, but this does not matter for the
mixer.
Regards,
Clemens
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