+ fn new(mode: PCMMode) -> Self {
+ PCMDecoder { chmap: NAChannelMap::new(), mode }
+ }
+ fn decode_xlaw(&self, pkt: &NAPacket, duration: u64, srate: u32) -> DecoderResult<NAFrameRef> {
+ let pktbuf = pkt.get_buffer();
+ let channels = self.chmap.num_channels();
+ let abuf = alloc_audio_buffer(NAAudioInfo::new(srate, channels as u8, SND_S16_FORMAT, 1), duration as usize, self.chmap.clone())?;
+ let mut buf = abuf.get_abuf_i16().unwrap();
+ let dst = buf.get_data_mut().unwrap();
+ for (src, dst) in pktbuf.chunks(channels).zip(dst.chunks_mut(channels)) {
+ for (isamp, dsamp) in src.iter().zip(dst.iter_mut()) {
+ *dsamp = if self.mode == PCMMode::ALaw { cvt_alaw(*isamp) } else { cvt_mulaw(*isamp) };
+ }
+ }
+ let info = pkt.get_stream().get_info();
+ let mut frm = NAFrame::new_from_pkt(pkt, info, abuf);
+ frm.set_duration(Some(duration));
+ frm.set_keyframe(true);
+ Ok(frm.into_ref())