snd_ctl_add_vmaster_hook (9) Linux Manual Page
snd_ctl_add_vmaster_hook – Add a hook to a vmaster control
Synopsis
int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kcontrol, void (*hook)(void *private_data, int), void *private_data);Arguments
kcontrol
-
- vmaster kctl element
hook
- the hook function
private_data
- the private_data pointer to be saved
Description
Adds the given hook to the vmaster control element so that it’s called at each time when the value is changed.
Return
Zero.