Re: [alsa-devel] stereo uac device control over mixer

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@ladisch.de Sent: Tuesday, May 5, 2015 7:15 PM To: Arijit De; alsa-devel@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