pub unsafe extern "C" fn snd_mixer_selem_set_playback_dB(
elem: *mut snd_mixer_elem_t,
channel: snd_mixer_selem_channel_id_t,
value: c_long,
dir: c_int,
) -> c_int
pub unsafe extern "C" fn snd_mixer_selem_set_playback_dB(
elem: *mut snd_mixer_elem_t,
channel: snd_mixer_selem_channel_id_t,
value: c_long,
dir: c_int,
) -> c_int