Function audio_device_alsa_sys::snd_mixer_elem_new

pub unsafe extern "C" fn snd_mixer_elem_new(
    elem: *mut *mut snd_mixer_elem_t, 
    type_: snd_mixer_elem_type_t, 
    compare_weight: c_int, 
    private_data: *mut c_void, 
    private_free: Option<unsafe extern "C" fn(elem: *mut snd_mixer_elem_t)>
) -> c_int