--- /dev/null
+use nihav_core::frame::*;
+use nihav_core::demuxers::*;
+
+struct TTADemuxer<'a> {
+ src: &'a mut ByteReader<'a>,
+ cur_frame: u32,
+ nframes: u32,
+ nsamples: u32,
+ offtab: Vec<u64>,
+ sizetab: Vec<u32>,
+ framelen: u32,
+}
+
+impl<'a> TTADemuxer<'a> {
+ fn new(io: &'a mut ByteReader<'a>) -> Self {
+ Self {
+ src: io,
+ cur_frame: 0,
+ nframes: 0,
+ nsamples: 0,
+ offtab: Vec::new(),
+ sizetab: Vec::new(),
+ framelen: 0,
+ }
+ }
+}
+
+impl<'a> DemuxCore<'a> for TTADemuxer<'a> {
+ fn open(&mut self, strmgr: &mut StreamManager, seek_index: &mut SeekIndex) -> DemuxerResult<()> {
+
+ let mut hdr = vec![0; 22];
+ self.src.read_buf(&mut hdr)?;
+
+ validate!(&hdr[..4] == b"TTA1");
+ let _afmt = read_u16le(&hdr[4..])?;
+ let channels = read_u16le(&hdr[6..])?;
+ validate!(channels > 0 && channels < 256);
+ let bpp = read_u16le(&hdr[8..])?;
+ validate!(bpp > 0 && bpp <= 32);
+ let srate = read_u32le(&hdr[10..])?;
+ validate!(srate > 256 && srate < 1048576);
+ self.nsamples = read_u32le(&hdr[14..])?;
+ validate!(self.nsamples > 0);
+ let _crc = read_u32le(&hdr[18..])?;
+
+ self.framelen = srate * 256 / 245;
+
+ self.nframes = (self.nsamples + self.framelen - 1) / self.framelen;
+
+ seek_index.mode = SeekIndexMode::Present;
+ let mut off = u64::from(self.nframes) * 4 + 4 + 22;
+ let mut cur_time = 0;
+ for pts in 0..self.nframes {
+ let fsize = self.src.read_u32le()?;
+ self.sizetab.push(fsize);
+ self.offtab.push(off);
+ let time = u64::from(cur_time) * 1000 / u64::from(srate);
+ seek_index.add_entry(0, SeekEntry { time, pts: u64::from(pts), pos: off });
+ off += u64::from(fsize);
+ cur_time += self.framelen;
+ }
+
+ let ahdr = NAAudioInfo::new(srate, channels as u8, SND_S16P_FORMAT, 1);
+ let ainfo = NACodecInfo::new("tta", NACodecTypeInfo::Audio(ahdr), Some(hdr));
+ strmgr.add_stream(NAStream::new(StreamType::Audio, 0, ainfo, self.framelen, srate)).unwrap();
+
+ self.cur_frame = 0;
+
+ Ok(())
+ }
+ fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
+ if self.cur_frame >= self.nframes {
+ return Err(DemuxerError::EOF);
+ }
+
+ let size = self.sizetab[self.cur_frame as usize] as usize;
+ let off = self.offtab[self.cur_frame as usize];
+ self.src.seek(SeekFrom::Start(off))?;
+
+ let stream = strmgr.get_stream(0).unwrap();
+ let (tb_num, tb_den) = stream.get_timebase();
+ let ts = NATimeInfo::new(Some(self.cur_frame.into()), None, None, tb_num, tb_den);
+ let pkt = self.src.read_packet(stream, ts, true, size)?;
+
+ self.cur_frame += 1;
+
+ Ok(pkt)
+ }
+ fn seek(&mut self, time: NATimePoint, seek_index: &SeekIndex) -> DemuxerResult<()> {
+ let ret = seek_index.find_pos(time);
+ if ret.is_none() {
+ return Err(DemuxerError::SeekError);
+ }
+ let seek_info = ret.unwrap();
+ self.cur_frame = seek_info.pts as u32;
+
+ Ok(())
+ }
+}
+
+impl<'a> NAOptionHandler for TTADemuxer<'a> {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+ fn set_options(&mut self, _options: &[NAOption]) { }
+ fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+
+pub struct TTADemuxerCreator { }
+
+impl DemuxerCreator for TTADemuxerCreator {
+ fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
+ Box::new(TTADemuxer::new(br))
+ }
+ fn get_name(&self) -> &'static str { "tta" }
+}
+
+#[cfg(test)]
+mod test {
+ use super::*;
+ use std::fs::File;
+
+ #[test]
+ fn test_tta_demux() {
+ let mut file = File::open("assets/LLaudio/luckynight.tta").unwrap();
+ let mut fr = FileReader::new_read(&mut file);
+ let mut br = ByteReader::new(&mut fr);
+ let mut dmx = TTADemuxer::new(&mut br);
+ let mut sm = StreamManager::new();
+ let mut si = SeekIndex::new();
+ dmx.open(&mut sm, &mut si).unwrap();
+ loop {
+ let pktres = dmx.get_frame(&mut sm);
+ if let Err(e) = pktres {
+ if (e as i32) == (DemuxerError::EOF as i32) { break; }
+ panic!("error");
+ }
+ let pkt = pktres.unwrap();
+ println!("Got {}", pkt);
+ }
+ }
+}