alsa_sys::snd_pcm_hw_params_set_period_size_first

pub unsafe extern fn snd_pcm_hw_params_set_period_size_first(pcm: *mut snd_pcm_t, params: *mut snd_pcm_hw_params_t, val: *mut snd_pcm_uframes_t, dir: *mut c_int) -> c_int