Type Alias tone_segment_func_t 

pub type tone_segment_func_t = Option<unsafe extern "C" fn(data: *mut c_void, f1: c_int, f2: c_int, duration: c_int)>;

Aliased Type

pub enum tone_segment_func_t {
    None,
    Some(unsafe extern "C" fn(*mut c_void, i32, i32, i32)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, i32, i32, i32))

Some value of type T.