mix_setrealdev
mix_setrealdev(m, SOUND_MIXER_VOLUME,
mix_setrealdev(m, SOUND_MIXER_VOLUME,
mix_setrealdev(m, SOUND_MIXER_PHONEOUT,
mix_setrealdev(m, SOUND_MIXER_VOLUME,
void mix_setrealdev(struct snd_mixer *m, u_int32_t dev, u_int32_t realdev);
mix_setrealdev(m, SOUND_MIXER_VOLUME, SOUND_MIXER_NONE);