Type Alias snd_mixer_callback_t 

pub type snd_mixer_callback_t = Option<unsafe extern "C" fn(ctl: *mut snd_mixer_t, mask: c_uint, elem: *mut snd_mixer_elem_t) -> c_int>;

Aliased Type

pub enum snd_mixer_callback_t {
    None,
    Some(unsafe extern "C" fn(*mut _snd_mixer, u32, *mut _snd_mixer_elem) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut _snd_mixer, u32, *mut _snd_mixer_elem) -> i32)

Some value of type T.