if let NACodecTypeInfo::Audio(_) = info.get_properties() {
let pktbuf = pkt.get_buffer();
let samples = pktbuf.len() / self.chmap.num_channels();
if let NACodecTypeInfo::Audio(_) = info.get_properties() {
let pktbuf = pkt.get_buffer();
let samples = pktbuf.len() / self.chmap.num_channels();