[alsa-devel] alsa-lib: snd_mixer_selem_is_active changes - which event?

Hello

I wonder which event mask notifies an application that snd_mixer_selem_is_active() may have changed.

SND_CTL_EVENT_MASK_VALUE or SND_CTL_EVENT_MASK_INFO

or something else?

I'd be glad for any insights?

Sebastian H.