ALSA Library Reference Manual
DECLARATION
typedef struct snd_mixer_callbacks
{
void *private_data; /* should be used with an application */
void (*rebuild) (void *private_data);
void (*element) (void *private_data, int cmd, snd_mixer_eid_t * eid);
void (*group) (void *private_data, int cmd, snd_mixer_gid_t * gid);
void *reserved[28]; /* reserved for the future use - must be NULL!!! */
}
snd_mixer_callbacks_t;
REFERENCE