let ahdr = NAAudioInfo::new(srate, channels as u8, SND_S16P_FORMAT, 1);
let ainfo = NACodecInfo::new("tta", NACodecTypeInfo::Audio(ahdr), Some(hdr));
let ahdr = NAAudioInfo::new(srate, channels as u8, SND_S16P_FORMAT, 1);
let ainfo = NACodecInfo::new("tta", NACodecTypeInfo::Audio(ahdr), Some(hdr));