fn get_duration(ainfo: &NAAudioInfo, duration: Option<u64>, data_size: usize) -> u64 {
if duration == None {
let size_bits = (data_size as u64) * 8;
fn get_duration(ainfo: &NAAudioInfo, duration: Option<u64>, data_size: usize) -> u64 {
if duration == None {
let size_bits = (data_size as u64) * 8;