Function alsa_sys::snd_async_add_pcm_handler

pub unsafe extern "C" fn snd_async_add_pcm_handler(
    handler: *mut *mut snd_async_handler_t, 
    pcm: *mut snd_pcm_t, 
    callback: snd_async_callback_t, 
    private_data: *mut c_void
) -> c_int