pub unsafe extern "C" fn snd_pcm_mmap_writen(
pcm: *mut snd_pcm_t,
bufs: *mut *mut c_void,
size: snd_pcm_uframes_t,
) -> snd_pcm_sframes_t
pub unsafe extern "C" fn snd_pcm_mmap_writen(
pcm: *mut snd_pcm_t,
bufs: *mut *mut c_void,
size: snd_pcm_uframes_t,
) -> snd_pcm_sframes_t