if let NACodecTypeInfo::Audio(ainfo) = info.get_properties() {
self.chmap.add_channels(&CHMAP_MONO);
self.ainfo = NAAudioInfo::new(ainfo.get_sample_rate(),
if let NACodecTypeInfo::Audio(ainfo) = info.get_properties() {
self.chmap.add_channels(&CHMAP_MONO);
self.ainfo = NAAudioInfo::new(ainfo.get_sample_rate(),