snd_ctl_activate_id (9) - Linux Manuals

snd_ctl_activate_id: activate/inactivate the control of the given id

NAME

snd_ctl_activate_id - activate/inactivate the control of the given id

SYNOPSIS

int snd_ctl_activate_id(struct snd_card * card, struct snd_ctl_elem_id * id, int active);

ARGUMENTS

card

the card instance

id

the control id to activate/inactivate

active

non-zero to activate

DESCRIPTION

Finds the control instance with the given id, and activate or inactivate the control together with notification, if changed. The given ID data is filled with full information.

RETURN

0 if unchanged, 1 if changed, or a negative error code on failure.

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