]> git.nihav.org Git - nihav.git/blobdiff - src/demuxers/realmedia.rs
rmdec: demux audio in smaller chunks
[nihav.git] / src / demuxers / realmedia.rs
index 042b9032c4d4c605ea05c7af883aa75625dc8800..223dbb778213aa60df145b5754300d9ab0062a3f 100644 (file)
@@ -15,6 +15,20 @@ macro_rules! mktag {
     });
 }
 
+const RM_SIPRO_BLOCK_SIZES: [usize; 4] = [ 29, 19, 37, 20 ];
+const RM_SIPRO_SWAPS:   [[u8; 2]; 38] = [
+    [  0, 63 ], [  1, 22 ], [  2, 44 ], [  3, 90 ],
+    [  5, 81 ], [  7, 31 ], [  8, 86 ], [  9, 58 ],
+    [ 10, 36 ], [ 12, 68 ], [ 13, 39 ], [ 14, 73 ],
+    [ 15, 53 ], [ 16, 69 ], [ 17, 57 ], [ 19, 88 ],
+    [ 20, 34 ], [ 21, 71 ], [ 24, 46 ], [ 25, 94 ],
+    [ 26, 54 ], [ 28, 75 ], [ 29, 50 ], [ 32, 70 ],
+    [ 33, 92 ], [ 35, 74 ], [ 38, 85 ], [ 40, 56 ],
+    [ 42, 87 ], [ 43, 65 ], [ 45, 59 ], [ 48, 79 ],
+    [ 49, 93 ], [ 51, 89 ], [ 55, 95 ], [ 61, 76 ],
+    [ 67, 83 ], [ 77, 80 ]
+];
+
 struct RMVideoStream {
     frame:      Vec<u8>,
     hdr_size:   usize,
@@ -72,6 +86,7 @@ impl RMVideoStream {
 #[derive(Clone,Copy,PartialEq)]
 enum Deinterleaver {
     None,
+    RA28_8,
     Generic,
     Sipro,
     VBR,
@@ -80,11 +95,147 @@ enum Deinterleaver {
 #[allow(dead_code)]
 struct RMAudioStream {
     deint:      Deinterleaver,
+    iinfo:      Option<InterleaveInfo>,
+    buf:        Vec<u8>,
+    sub_packet: usize,
 }
 
+const RM_ILEAVE_INT0: u32 = mktag!(b"Int0");
+const RM_ILEAVE_INT4: u32 = mktag!(b"Int4");
+const RM_ILEAVE_GENR: u32 = mktag!(b"genr");
+const RM_ILEAVE_SIPR: u32 = mktag!(b"sipr");
+const RM_ILEAVE_VBRF: u32 = mktag!(b"vbrf");
+const RM_ILEAVE_VBRS: u32 = mktag!(b"vbrs");
+
 impl RMAudioStream {
-    fn new(deint: Deinterleaver) -> Self {
-        RMAudioStream { deint: deint }
+    fn new(iinfo: Option<InterleaveInfo>) -> Self {
+        let deint;
+        let mut buf: Vec<u8>;
+        if let Some(info) = iinfo {
+            deint = match info.id {
+                    RM_ILEAVE_INT0 => Deinterleaver::None,
+                    RM_ILEAVE_INT4 => Deinterleaver::RA28_8,
+                    RM_ILEAVE_GENR => Deinterleaver::Generic,
+                    RM_ILEAVE_SIPR => Deinterleaver::Sipro,
+                    RM_ILEAVE_VBRF => Deinterleaver::VBR,
+                    RM_ILEAVE_VBRS => Deinterleaver::VBR,
+                    _ => {println!("unknown deint {:X}", info.id); Deinterleaver::None },
+                };
+            match deint {
+                Deinterleaver::None     => { buf = Vec::new(); },
+                Deinterleaver::RA28_8  |
+                Deinterleaver::Generic |
+                Deinterleaver::Sipro    => {
+                        let bsize = (info.frame_size as usize) * (info.factor as usize);
+                        buf = Vec::with_capacity(bsize);
+                        buf.resize(bsize, 0u8);
+                    },
+                Deinterleaver::VBR      => { unimplemented!("deint"); },
+            };
+        } else {
+            deint = Deinterleaver::None;
+            buf = Vec::new();
+        }
+        RMAudioStream { deint: deint, iinfo: iinfo, buf: buf, sub_packet: 0 }
+    }
+    fn read_apackets(&mut self, queued_packets: &mut Vec<NAPacket>, src: &mut ByteReader, stream: Rc<NAStream>, ts: u32, keyframe: bool, payload_size: usize) -> DemuxerResult<NAPacket> {
+        let (tb_num, tb_den) = stream.get_timebase();
+        let ts = NATimeInfo::new(Some(ts as u64), None, None, tb_num, tb_den);
+
+        if keyframe {
+            self.sub_packet = 0;
+        }
+        match self.deint {
+            Deinterleaver::None     => { return src.read_packet(stream, ts, keyframe, payload_size); },
+            Deinterleaver::RA28_8   => {
+                    let iinfo = self.iinfo.unwrap();
+                    let factor   = iinfo.factor as usize;
+                    let halffact = factor >> 1;
+                    let fsize    = iinfo.frame_size as usize;
+                    let bsize    = iinfo.block_size as usize;
+                    let ppos     = self.sub_packet;
+                    for sb in 0..halffact {
+                        let mut dst = &mut self.buf[sb * 2 * fsize + ppos * bsize..][..bsize];
+                        src.read_buf(&mut dst)?;
+                    }
+                    self.sub_packet += 1;
+                    if self.sub_packet == factor {
+                        self.sub_packet = 0;
+                        return Ok(NAPacket::new(stream, ts, true, self.buf.clone()));
+                    } else {
+                        return Err(DemuxerError::TryAgain);
+                    }
+                },
+            Deinterleaver::Generic  => {
+                    let iinfo = self.iinfo.unwrap();
+                    let factor   = iinfo.factor as usize;
+                    let fsize    = iinfo.frame_size as usize;
+                    let bsize    = iinfo.block_size as usize;
+                    let factor2  = fsize / bsize;
+                    let ppos     = self.sub_packet;
+
+                    for sb in 0..factor2 {
+                        let sb_pos = factor * sb + ((factor + 1) >> 1) * (ppos & 1) + (ppos >> 1);
+                        let mut dst = &mut self.buf[bsize * sb_pos..][..bsize];
+                        src.read_buf(&mut dst)?;
+                    }
+                },
+            Deinterleaver::Sipro    => {
+                    let iinfo = self.iinfo.unwrap();
+                    let fsize    = iinfo.frame_size as usize;
+                    let ppos     = self.sub_packet;
+
+                    let mut dst = &mut self.buf[fsize * ppos..][..fsize];
+                    src.read_buf(&mut dst)?;
+                },
+            _                       => { return src.read_packet(stream, ts, keyframe, payload_size); },
+        };
+
+        let iinfo = self.iinfo.unwrap();
+        let factor   = iinfo.factor as usize;
+        let fsize    = if iinfo.block_size != 0 { iinfo.block_size } else { iinfo.frame_size } as usize;
+
+        self.sub_packet += 1;
+        if self.sub_packet < factor {
+            return Err(DemuxerError::TryAgain);
+        }
+
+        self.sub_packet = 0;
+
+        if self.deint == Deinterleaver::Sipro {
+            sipro_restore(&mut self.buf, factor, fsize);
+        }
+
+        let mut frames_iter = self.buf.chunks(fsize);
+        let pkt0 = frames_iter.next().unwrap();
+
+        let pkt_ts = NATimeInfo::new(None, None, None, tb_num, tb_den);
+        for pkts in frames_iter {
+            let pkt = NAPacket::new(stream.clone(), pkt_ts, true, pkts.to_vec());
+            queued_packets.push(pkt);
+        }
+        queued_packets.reverse();
+        Ok(NAPacket::new(stream, ts, true, pkt0.to_vec()))
+    }
+}
+
+fn sipro_restore(buf: &mut [u8], factor: usize, fsize: usize) {
+    let stride = factor * fsize * 2 / 96;
+    for i in 0..38 {
+        let mut sidx = (RM_SIPRO_SWAPS[i][0] as usize) * stride;
+        let mut didx = (RM_SIPRO_SWAPS[i][1] as usize) * stride;
+        for _ in 0..stride {
+            let in0 = buf[sidx >> 1];
+            let in1 = buf[didx >> 1];
+            let nib0 = (in0 >> ((sidx & 1) * 4)) & 0xF;
+            let nib1 = (in1 >> ((didx & 1) * 4)) & 0xF;
+
+            buf[didx >> 1] = (nib0 << (4 * (didx & 1))) | (in1 & (0xF << (4 * (!didx & 1))));
+            buf[sidx >> 1] = (nib1 << (4 * (sidx & 1))) | (in0 & (0xF << (4 * (!sidx & 1))));
+
+            sidx += 1;
+            didx += 1;
+        }
     }
 }
 
@@ -146,8 +297,8 @@ fn read_multiple_frame(src: &mut ByteReader, stream: Rc<NAStream>, keyframe: boo
     }
     let (_, frame_size) = read_14or30(src)?;
     let (_, timestamp)  = read_14or30(src)?;
-    let seq_no          = src.read_byte()?;
-println!("  multiple frame size {} ts {} seq {}", frame_size, timestamp, seq_no);
+    let _seq_no         = src.read_byte()?;
+//println!("  multiple frame size {} ts {} seq {}", frame_size, timestamp, seq_no);
 
     read_video_buf(src, stream, timestamp, keyframe, frame_size as usize)
 }
@@ -174,30 +325,35 @@ impl<'a> DemuxCore<'a> for RealMediaDemuxer<'a> {
             let len             = self.src.read_u16be()? as usize;
             let str_no          = self.src.read_u16be()?;
             let ts              = self.src.read_u32be()?;
-            let pkt_grp;
+            let _pkt_grp;
             if ver == 0 {
-                pkt_grp         = self.src.read_byte()?;
+                _pkt_grp         = self.src.read_byte()?;
             } else {
                 //asm_rule        = self.src.read_u16le()?;
                 self.src.read_skip(2)?;
-                pkt_grp = 0;
+                _pkt_grp = 0;
             }
             let flags           = self.src.read_byte()?;
             let hdr_size = self.src.tell() - pkt_start;
-println!("packet @{:X} size {} for {} ts {} grp {} flags {:X}", pkt_start, len, str_no, ts, pkt_grp, flags);
+//println!("packet @{:X} size {} for {} ts {} grp {} flags {:X}", pkt_start, len, str_no, ts, _pkt_grp, flags);
             self.cur_packet += 1;
 
             let payload_size = len - (hdr_size as usize);
 
             let sr = self.str_ids.iter().position(|x| *x == str_no);
             if sr.is_none() {
-println!("stream {} not found", str_no);
+//println!("stream {} not found", str_no);
                 self.src.read_skip(payload_size)?;
                 return Err(DemuxerError::InvalidData);
             }
             let str_id = sr.unwrap();
-            let stream = strmgr.get_stream_by_id(str_no as u32).unwrap();
-println!("  stream {}", str_id);
+            let streamres = strmgr.get_stream_by_id(str_no as u32);
+            if streamres.is_none() {
+                self.src.read_skip(payload_size)?;
+                continue;
+            }
+            let stream = streamres.unwrap();
+//println!("  stream {}", str_id);
             if strmgr.is_ignored_id(str_no as u32) {
                 self.src.read_skip(payload_size)?;
                 continue;
@@ -219,7 +375,7 @@ println!("  stream {}", str_id);
                                     let (_, frame_size) = read_14or30(self.src)?;
                                     let (_, off)        = read_14or30(self.src)?;
                                     let seq_no = self.src.read_byte()?;
-println!(" mode 0 pkt {}/{} off {}/{} seq {}", packet_num, num_pkts, off, frame_size, seq_no);
+//println!(" mode 0 pkt {}/{} off {}/{} seq {}", packet_num, num_pkts, off, frame_size, seq_no);
                                     let hdr_skip = (self.src.tell() - pos) as usize;
 
                                     let slice_size = (payload_size - hdr_skip) as usize;
@@ -230,12 +386,19 @@ println!(" mode 0 pkt {}/{} off {}/{} seq {}", packet_num, num_pkts, off, frame_
                                     } else {
                                         vstr.add_slice(packet_num as usize, self.slice_buf.as_slice()); 
                                     }
-                                    continue;
+                                    if (packet_num as usize) < num_pkts {
+                                        continue;
+                                    }
+                                    //todo: check if full frame is received
+                                    let (tb_num, tb_den) = stream.get_timebase();
+                                    let ts = NATimeInfo::new(Some(ts as u64), None, None, tb_num, tb_den);
+                                    let pkt = NAPacket::new(stream, ts, keyframe, vstr.get_frame_data());
+                                    Ok(pkt)
                                 },
                             1 => { // whole frame
                                     let seq_no = self.src.read_byte()?;
-println!(" mode 1 seq {}", seq_no);
-                                    read_video_buf(self.src, stream, ts, keyframe, payload_size - 1)
+//println!(" mode 1 seq {}", seq_no);
+                                    read_video_buf(self.src, stream, ts, keyframe, payload_size - 2)
                                 },
                             2 => { // last partial frame
                                     let b1  = self.src.read_byte()?;
@@ -245,10 +408,14 @@ println!(" mode 1 seq {}", seq_no);
                                     let (_, frame_size) = read_14or30(self.src)?;
                                     let (_, tail_size)  = read_14or30(self.src)?;
                                     let seq_no = self.src.read_byte()?;
-println!(" mode 2 pkt {}/{} tail {}/{} seq {}", packet_num, num_pkts, tail_size, frame_size, seq_no);
+//println!(" mode 2 pkt {}/{} tail {}/{} seq {}", packet_num, num_pkts, tail_size, frame_size, seq_no);
                                     self.slice_buf.resize(tail_size as usize, 0);
                                     self.src.read_buf(self.slice_buf.as_mut_slice())?;
-                                    vstr.add_slice(packet_num as usize, self.slice_buf.as_slice());
+                                    if packet_num == 1 && frame_size == tail_size {
+                                        vstr.start_slice(num_pkts, frame_size as usize, self.slice_buf.as_slice());
+                                    } else {
+                                        vstr.add_slice(packet_num as usize, self.slice_buf.as_slice()); 
+                                    }
 
                                     while self.src.tell() < pos + (payload_size as u64) {
                                         let res = read_multiple_frame(self.src, stream.clone(), false, false);
@@ -262,7 +429,7 @@ println!(" mode 2 pkt {}/{} tail {}/{} seq {}", packet_num, num_pkts, tail_size,
                                     Ok(pkt)
                             },
                         _ => { // multiple frames
-println!(" mode 3");
+//println!(" mode 3");
                                     let res = read_multiple_frame(self.src, stream.clone(), keyframe, true);
                                     if res.is_err() { return res; }
                                     while self.src.tell() < pos + (payload_size as u64) {
@@ -276,9 +443,11 @@ println!(" mode 3");
                         }
                     },
                 RMStreamType::Audio(ref mut astr) => {
-                        let (tb_num, tb_den) = stream.get_timebase();
-                        let ts = NATimeInfo::new(Some(ts as u64), None, None, tb_num, tb_den);
-                        self.src.read_packet(stream, ts, keyframe, payload_size)
+                        let ret = astr.read_apackets(&mut self.queued_pkts, &mut self.src, stream, ts, keyframe, payload_size);
+                        if let Err(DemuxerError::TryAgain) = ret {
+                            continue;
+                        }
+                        ret
                     },
                 _ => {
 //                        self.src.read_skip(payload_size)?;
@@ -297,13 +466,190 @@ println!(" mode 3");
 
 fn read_chunk(src: &mut ByteReader) -> DemuxerResult<(u32, u32, u16)> {
     let id      = src.read_u32be()?;
+if id == 0 { return Ok((0, 0, 0)); }
     let size    = src.read_u32be()?;
+if size == 0 {
+    let ver     = src.read_u16be()?;
+    validate!(ver <= 1);
+    return Ok((id, 0x0FFFFFFF, ver));
+}
     validate!(size >= 10);
     let ver     = src.read_u16be()?;
     validate!(ver <= 1);
     Ok((id, size, ver))
 }
 
+#[derive(Clone,Copy,Debug)]
+struct InterleaveInfo {
+    id:         u32,
+    factor:     u16,
+    block_size: u16,
+    frame_size: u16,
+}
+
+#[derive(Clone,Copy,Debug)]
+struct RealAudioInfo {
+    fcc:                u32,
+    sample_rate:        u32,
+    sample_size:        u16,
+    flavor:             u16,
+    channels:           u16,
+    channel_mask:       u32,
+    granularity:        u32,
+    bytes_per_minute:   u32,
+    total_bytes:        u32,
+    edata_size:         u32,
+    ileave_info:        Option<InterleaveInfo>
+}
+
+fn skip_ra_metadata(src: &mut ByteReader) -> DemuxerResult<()> {
+    let title_len           = src.read_byte()? as usize;
+    src.read_skip(title_len)?;
+    let author_len          = src.read_byte()? as usize;
+    src.read_skip(author_len)?;
+    let copywrong_len       = src.read_byte()? as usize;
+    src.read_skip(copywrong_len)?;
+    let comment_len         = src.read_byte()? as usize;
+    src.read_skip(comment_len)?;
+    Ok(())
+}
+
+#[allow(unused_variables)]
+fn parse_aformat3(src: &mut ByteReader) -> DemuxerResult<RealAudioInfo> {
+    let start = src.tell();
+    let header_len          = src.read_u16be()?;
+    validate!(header_len >= 24);
+    let flavor              = src.read_u16be()?;
+    let granularity         = src.read_u32be()?;
+    let bytes_per_minute    = src.read_u32be()?;
+    let total_bytes         = src.read_u32be()?;
+
+    skip_ra_metadata(src)?;
+
+    let _can_copy           = src.read_byte()?;
+    let fcc_len             = src.read_byte()?;
+    validate!(fcc_len == 4);
+    let fcc                 = src.read_u32be()?;
+
+    let end = src.tell();
+    validate!(end - start <= (header_len as u64) + 2);
+
+    Ok(RealAudioInfo {
+        fcc: fcc, flavor: flavor,
+        sample_rate: 8000, sample_size: 16, channels: 1, channel_mask: 0,
+        granularity: granularity, bytes_per_minute: bytes_per_minute,
+        total_bytes: total_bytes, edata_size: 0,
+        ileave_info: None,
+    })
+}
+
+#[allow(unused_variables)]
+fn parse_aformat4(src: &mut ByteReader) -> DemuxerResult<RealAudioInfo> {
+    let start = src.tell();
+    src.read_skip(2)?; // zeroes
+    let id                  = src.read_u32be()?;
+    validate!(id == mktag!(b".ra4"));
+    let data_size           = src.read_u32be()?;
+    let _ver4               = src.read_u16be()?; // should be 4
+    let header_size         = src.read_u32be()?;
+    let flavor              = src.read_u16be()?;
+    let granularity         = src.read_u32be()?;
+    let total_bytes         = src.read_u32be()?;
+    let bytes_per_minute    = src.read_u32be()?;
+    let _bytes_per_minute2  = src.read_u32be()?;
+    let ileave_factor       = src.read_u16be()?;
+    let ileave_block_size   = src.read_u16be()?;
+    let _user_data          = src.read_u16be()?;
+    let sample_rate         = src.read_u32be()?;
+    let sample_size         = src.read_u32be()?;
+    let channels            = src.read_u16be()?;
+    let interleaver_id_len  = src.read_byte()?;
+    validate!(interleaver_id_len == 4);
+    let interleaver_id      = src.read_u32be()?;
+    let fcc_len             = src.read_byte()?;
+    validate!(fcc_len == 4);
+    let fcc                 = src.read_u32be()?;
+    let is_interleaved      = src.read_byte()?;
+    let _can_copy           = src.read_byte()?;
+    let _stream_type        = src.read_byte()?;
+
+    skip_ra_metadata(src)?;
+
+    let end = src.tell();
+    validate!(end - start <= (header_size as u64) + 10);
+
+    let ileave_info = if is_interleaved != 0 {
+            Some(InterleaveInfo {
+                    id: interleaver_id, factor: ileave_factor, block_size: granularity as u16,
+                    frame_size: ileave_block_size,
+                })
+        } else {
+            None
+        };
+
+    Ok(RealAudioInfo {
+        fcc: fcc, flavor: flavor,
+        sample_rate: sample_rate, sample_size: sample_size as u16, channels: channels, channel_mask: 0,
+        granularity: granularity, bytes_per_minute: bytes_per_minute,
+        total_bytes: total_bytes & 0xFFFFFF, edata_size: 0,
+        ileave_info: ileave_info,
+    })
+}
+
+#[allow(unused_variables)]
+fn parse_aformat5(src: &mut ByteReader) -> DemuxerResult<RealAudioInfo> {
+    let start = src.tell();
+    src.read_skip(2)?; // zeroes
+    let id                  = src.read_u32be()?;
+    validate!(id == mktag!(b".ra5"));
+    let data_size           = src.read_u32be()?;
+    let _ver5               = src.read_u16be()?; // should be 5
+    let header_size         = src.read_u32be()?;
+    let flavor              = src.read_u16be()?;
+    let granularity         = src.read_u32be()?;
+    let total_bytes         = src.read_u32be()?;
+    let bytes_per_minute    = src.read_u32be()?;
+    let _bytes_per_minute2  = src.read_u32be()?;
+    let ileave_factor       = src.read_u16be()?;
+    let frame_size          = src.read_u16be()?;
+    let ileave_block_size   = src.read_u16be()?;
+    let user_data           = src.read_u32be()?;
+    let _sample_rate1       = src.read_u16be()?;
+    let sample_rate         = src.read_u32be()?;
+    let sample_size         = src.read_u32be()?;
+    let channels            = src.read_u16be()?;
+    let interleaver_id      = src.read_u32be()?;
+    let fcc                 = src.read_u32be()?;
+    let is_interleaved      = src.read_byte()?;
+    let _can_copy           = src.read_byte()?;
+    let _stream_type        = src.read_byte()?;
+    let has_ileave_pattern  = src.read_byte()?;
+    if has_ileave_pattern != 0 {
+unimplemented!("ra5 interleave pattern");
+    }
+    let edata_size          = src.read_u32be()?;
+
+    let end = src.tell();
+    validate!(end - start <= (header_size as u64) + 10);
+//    src.read_skip(((end - start) as usize) - (header_size as usize) - 10)?;
+
+    let ileave_info = if is_interleaved != 0 {
+            Some(InterleaveInfo {
+                    id: interleaver_id, factor: ileave_factor, block_size: ileave_block_size, frame_size: frame_size,
+                })
+        } else {
+            None
+        };
+
+    Ok(RealAudioInfo {
+        fcc: fcc, flavor: flavor,
+        sample_rate: sample_rate, sample_size: sample_size as u16, channels: channels, channel_mask: 0,
+        granularity: granularity, bytes_per_minute: bytes_per_minute,
+        total_bytes: total_bytes & 0xFFFFFF, edata_size: edata_size,
+        ileave_info: ileave_info,
+    })
+}
+
 const RMVB_HDR_SIZE:  u32 = 18;
 const RMVB_PROP_SIZE: u32 = 50;
 const KEYFRAME_FLAG: u8 = 0x02;
@@ -353,18 +699,27 @@ impl<'a> RealMediaDemuxer<'a> {
         }
 
         for _ in 0..num_hdr {
-            self.parse_chunk(strmgr)?;
+            if self.src.is_eof() {
+                //warn maybe?
+                break;
+            }
+            let res = self.parse_chunk(strmgr);
+            match res {
+                Ok(last) => { if last { break; } },
+                Err(DemuxerError::IOError) => { break; },
+                Err(etype) => { return Err(etype); },
+            };
         }
-println!("now @ {:X} / {}", self.src.tell(), self.data_pos);
+//println!("now @ {:X} / {}", self.src.tell(), self.data_pos);
         validate!(self.data_pos > 0);
         self.src.seek(SeekFrom::Start(self.data_pos))?;
         let num_packets     = self.src.read_u32be()?;
         let next_data_hdr   = self.src.read_u32be()?;
-        self.num_packets = num_packets;
+        self.num_packets = if num_packets > 0 { num_packets } else { 0xFFFFFF };
         self.cur_packet  = 0;
         Ok(())
     }
-    fn parse_chunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
+    fn parse_chunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<bool> {
         let (id, size, ver) = read_chunk(self.src)?;
         let end_pos = self.src.tell() - 10 + (size as u64);
 
@@ -373,13 +728,14 @@ println!("now @ {:X} / {}", self.src.tell(), self.data_pos);
         else if id == mktag!(b"MDPR") { self.parse_mdpr(strmgr)?; }
         else if id == mktag!(b"DATA") { if self.data_pos == 0 { self.data_pos = self.src.tell(); } }
         else if id == mktag!(b"INDX") { /* do nothing for now */ }
+        else if id == 0               { return Ok(true); }
         else                          { println!("unknown chunk type {:08X}", id); }
 
         let cpos = self.src.tell();
         if cpos < end_pos {
             self.src.read_skip((end_pos - cpos) as usize)?;
         }
-        Ok(())
+        Ok(false)
     }
 #[allow(unused_variables)]
     fn parse_content_desc(&mut self) -> DemuxerResult<()> {
@@ -406,10 +762,10 @@ println!("now @ {:X} / {}", self.src.tell(), self.data_pos);
         let duration        = self.src.read_u32be()?;
         let sname_size      = self.src.read_byte()? as usize;
         let sname           = read_string_size(self.src, sname_size)?;
-println!("str #{} sname = {} pkts {}/{} start {} preroll {}", stream_no, sname, maxps, avgps, start, preroll);
+//println!("str #{} sname = {} pkts {}/{} start {} preroll {}", stream_no, sname, maxps, avgps, start, preroll);
         let mime_size       = self.src.read_byte()? as usize;
         let mime            = read_string_size(self.src, mime_size)?;
-println!("mime = {}", mime);
+//println!("mime = {}", mime);
         let edata_size      = self.src.read_u32be()? as usize;
         let edata: Option<Vec<u8>> = if edata_size == 0 { None } else {
             let mut edvec: Vec<u8> = Vec::with_capacity(edata_size);
@@ -425,18 +781,46 @@ println!("mime = {}", mime);
 
                 let tag  = src.read_u32be()?;
                 let tag2 = src.peek_u32be()?;
-println!("tag1 {:X} tag2 {:X}", tag, tag2);
+//println!("tag1 {:X} tag2 {:X}", tag, tag2);
                 if tag == mktag!('.', 'r', 'a', 0xFD) {
-                    //todo audio
-                    let cname = "unknown";//find_codec_name(RM_AUDIO_CODEC_REGISTER, fcc);
-                    let soniton = NASoniton::new(16, SONITON_FLAG_SIGNED);
-                    let ahdr = NAAudioInfo::new(44100, 2, soniton, 1/*block_align as usize*/);
-                    let extradata = None;
-                    let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), extradata);
-                    let res = strmgr.add_stream(NAStream::new(StreamType::Audio, stream_no as u32, ainfo, 1, 44100));
+                    let ver         = src.read_u16be()?;
+                    let ainfo = match ver {
+                        3 => {
+                                parse_aformat3(&mut src)?
+                            },
+                        4 => {
+                                parse_aformat4(&mut src)?
+                            },
+                        5 => {
+                                parse_aformat5(&mut src)?
+                            },
+                        _ => {
+                                println!("unknown version {}", ver);
+                                return Err(DemuxerError::InvalidData);
+                            },
+                    };
+println!(" got ainfo {:?}", ainfo);
+                    let cname = find_codec_name(RM_AUDIO_CODEC_REGISTER, ainfo.fcc);
+                    let blk_size = if ainfo.fcc != mktag!(b"sipr") {
+                            ainfo.granularity as usize
+                        } else {
+                            validate!(ainfo.flavor <= 3);
+                            RM_SIPRO_BLOCK_SIZES[ainfo.flavor as usize]
+                        };
+                    let srate = ainfo.sample_rate;
+                    let soniton = NASoniton::new(ainfo.sample_size as u8, SONITON_FLAG_SIGNED);
+                    let ahdr = NAAudioInfo::new(srate, ainfo.channels as u8, soniton, blk_size);
+                    let extradata = if ainfo.edata_size == 0 {
+                            None
+                        } else {
+                            let eslice = &edata_[(src.tell() as usize)..];
+                            Some(eslice.to_vec())
+                        };
+                    let nainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), extradata);
+                    let res = strmgr.add_stream(NAStream::new(StreamType::Audio, stream_no as u32, nainfo, 1, srate));
                     if res.is_none() { return Err(MemoryError); }
 
-                    let astr = RMAudioStream::new(Deinterleaver::None);
+                    let astr = RMAudioStream::new(ainfo.ileave_info);
                     self.streams.push(RMStreamType::Audio(astr));
                 } else if ((tag2 == mktag!('V', 'I', 'D', 'O')) || (tag2 == mktag!('I', 'M', 'A', 'G'))) && ((tag as usize) <= edata_size) {
                     src.read_skip(4)?;
@@ -468,6 +852,22 @@ println!("tag1 {:X} tag2 {:X}", tag, tag2);
 
                     let vstr = RMVideoStream::new();
                     self.streams.push(RMStreamType::Video(vstr));
+                } else if tag == mktag!(b"LSD:") {
+                    let extradata = Some(edata_.to_vec());
+
+                    src.read_skip(4)?; //version
+                    let channels    = src.read_u16be()?;
+                    let samp_size   = src.read_u16be()?;
+                    let sample_rate = src.read_u32be()?;
+
+                    println!("LSD sr {}, {} ch", sample_rate, channels);
+                    let soniton = NASoniton::new(samp_size as u8, SONITON_FLAG_SIGNED);
+                    let ahdr = NAAudioInfo::new(sample_rate, channels as u8, soniton, 1);
+                    let nainfo = NACodecInfo::new("ralf", NACodecTypeInfo::Audio(ahdr), extradata);
+                    let res = strmgr.add_stream(NAStream::new(StreamType::Audio, stream_no as u32, nainfo, 1, sample_rate));
+                    if res.is_none() { return Err(MemoryError); }
+                    let astr = RMAudioStream::new(None);
+                    self.streams.push(RMStreamType::Audio(astr));
                 } else {
                     self.streams.push(RMStreamType::Logical);
                 }
@@ -573,7 +973,7 @@ static RM_VIDEO_CODEC_REGISTER: &'static [(&[u8;4], &str)] = &[
     (b"RVTR", "realvideo2"),
     (b"RV30", "realvideo3"),
     (b"RV40", "realvideo4"),
-    (b"CLV1", "clearvideo"),
+    (b"CLV1", "clearvideo_rm"),
 ];
 
 #[allow(dead_code)]