snd_mixer_selem_id_t *s_elem;
snd_mixer_open(&handle, 0);
snd_mixer_selem_id_t *s_elem;
snd_mixer_open(&handle, 0);
snd_mixer_selem_register(handle, NULL, NULL);
snd_mixer_load(handle);
snd_mixer_selem_id_malloc(&s_elem);
snd_mixer_selem_register(handle, NULL, NULL);
snd_mixer_load(handle);
snd_mixer_selem_id_malloc(&s_elem);
elem = snd_mixer_find_selem(handle, s_elem);
if (elem == NULL) {
snd_mixer_selem_id_free(s_elem);
snd_mixer_close(handle);
elem = snd_mixer_find_selem(handle, s_elem);
if (elem == NULL) {
snd_mixer_selem_id_free(s_elem);
snd_mixer_close(handle);