pub fn callback<T: Sample + AddAssign + SaturatingAdd + Display>(
user_bufs: Arc<Mutex<ClientStream>>,
output_volume_receiver: Receiver<f32>,
user_volumes: Arc<Mutex<HashMap<u32, (f32, bool)>>>,
) -> impl FnMut(&mut [T], &OutputCallbackInfo) + Send + 'staticExpand description
Returns a function that fills a buffer with audio from client streams modified according to some audio configuration.