Function mpg123_sys::mpg123_replace_reader

pub unsafe extern "C" fn mpg123_replace_reader(
    mh: *mut mpg123_handle, 
    r_read: unsafe extern "C" fn(_: c_int, _: *mut c_void, _: size_t) -> ssize_t, 
    r_lseek: unsafe extern "C" fn(_: c_int, _: off_t, _: c_int) -> off_t
) -> c_int