Legend Entertainment Q format demuxer and decoder

1 files changed, 249 insertions, 0 deletions

diff --git a/nihav-game/src/demuxers/q.rs b/nihav-game/src/demuxers/q.rs
new file mode 100644
index 0000000..3f38ef7
--- /dev/null
+++ b/nihav-game/src/demuxers/q.rs
@@ -0,0 +1,249 @@
+use nihav_core::frame::*;
+use nihav_core::demuxers::*;
+
+#[allow(dead_code)]
+struct QDemuxer<'a> {
+    src:        &'a mut ByteReader<'a>,
+    vpts:       u64,
+    apts:       u64,
+    bps:        usize,
+    a_id:       Option<usize>,
+    v_id:       Option<usize>,
+    nframes:    usize,
+    duration:   u64,
+    side_data:  Vec<u8>,
+}
+
+impl<'a> DemuxCore<'a> for QDemuxer<'a> {
+    #[allow(unused_variables)]
+    fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> {
+        let src = &mut self.src;
+
+        let mut hdr = [0; 22];
+                                          src.read_buf(&mut hdr)?;
+        validate!(hdr[0] == 0x39);
+        validate!(hdr[1] == 0x68);
+        let version = hdr[2];
+        validate!(version >= 3 && version <= 5);
+        let mut width  = read_u16le(&hdr[4..])? as usize;
+        let mut height = read_u16le(&hdr[6..])? as usize;
+        if version > 3 {
+            width  *= hdr[8] as usize;
+            height *= hdr[9] as usize;
+        }
+        validate!(width > 0 && width <= 800);
+        validate!(height > 0 && height <= 600);
+
+        self.nframes = read_u16le(&hdr[10..])? as usize;
+        validate!(self.nframes > 0);
+        let fps = if hdr[16] == 0 { 5 } else { hdr[16] as u32 };
+        self.duration = (self.nframes as u64) * 1000 / u64::from(fps);
+        let asize = if version > 3 {
+                                          src.read_u32le()?
+            } else { 0 };
+
+        let vhdr = NAVideoInfo::new(width, height, false, PAL8_FORMAT);
+        let vci = NACodecTypeInfo::Video(vhdr);
+        let vinfo = NACodecInfo::new("legend-q-video", vci, Some(hdr.to_vec()));
+        self.v_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, fps, self.nframes as u64));
+        if asize != 0 {
+            let ntype                   = self.src.peek_byte()?;
+            if ntype == 8 {
+                let _                   = self.src.read_u16le()?;
+                let size                = self.src.read_u32le()? as usize;
+                validate!(size >= 44);
+                let mut buf = vec![0; size];
+                                          self.src.read_buf(&mut buf)?;
+                let arate = read_u32le(&buf[24..])?;
+                let channels = buf[22];
+                let abits    = buf[34] as usize;
+                validate!(abits == 8 || abits == 16);
+                self.bps = (channels as usize) * abits / 8;
+                let bsize    = read_u16le(&buf[32..])? as usize;
+                let ahdr = NAAudioInfo::new(arate, channels as u8, if abits == 16 { SND_S16_FORMAT } else { SND_U8_FORMAT }, bsize);
+                let ainfo = NACodecInfo::new("pcm", NACodecTypeInfo::Audio(ahdr), None);
+                self.a_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, arate, 2));
+            }
+        }
+        self.apts = 0;
+        self.vpts = 0;
+        self.side_data.truncate(0);
+        Ok(())
+    }
+
+    fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
+        loop {
+            let ctype                   = self.src.read_u16le()?;
+            let size                    = self.src.read_u32le()? as usize;
+            match ctype {
+                0xFFFF => return Err(DemuxerError::EOF),
+                0 => {
+                    if let Some(a_id) = self.a_id {
+                        let str = strmgr.get_stream(a_id).unwrap();
+                        let (tb_num, tb_den) = str.get_timebase();
+                        let ts = NATimeInfo::new(Some(self.apts), None, None, tb_num, tb_den);
+                        self.apts += (size / self.bps) as u64;
+                        return self.src.read_packet(str, ts, true, size);
+                    } else {
+                        return Err(DemuxerError::InvalidData);
+                    }
+                },
+                1 => {
+                    validate!(size <= 768);
+                    let cur_len = self.side_data.len();
+                    self.side_data.resize(cur_len + size + 6, 0);
+                    self.side_data[cur_len] = ctype as u8;
+                    write_u32le(&mut self.side_data[cur_len + 2..], size as u32)?;
+                                          self.src.read_buf(&mut self.side_data[cur_len + 6..])?;
+                },
+                2 | 3 | 4 | 11 => {
+                    validate!(self.v_id.is_some());
+                    let str = strmgr.get_stream(self.v_id.unwrap_or(0)).unwrap();
+                    let (tb_num, tb_den) = str.get_timebase();
+                    let ts = NATimeInfo::new(Some(self.vpts), None, None, tb_num, tb_den);
+                    self.vpts += 1;
+
+                    let cur_len = self.side_data.len();
+                    self.side_data.resize(cur_len + size + 6, 0);
+                    self.side_data[cur_len] = ctype as u8;
+                    self.side_data[cur_len] = ctype as u8;
+                    write_u32le(&mut self.side_data[cur_len + 2..], size as u32)?;
+                    if let Err(err)       = self.src.read_buf(&mut self.side_data[cur_len + 6..]) {
+                        self.side_data.truncate(cur_len);
+                        return Err(err.into());
+                    }
+                    let mut buf = Vec::new();
+                    std::mem::swap(&mut buf, &mut self.side_data);
+                    return Ok(NAPacket::new(str, ts, self.vpts == 1, buf));
+                },
+                5 => {
+                    validate!(size <= 256);
+                    let cur_len = self.side_data.len();
+                    self.side_data.resize(cur_len + size + 6, 0);
+                    self.side_data[cur_len] = ctype as u8;
+                    write_u32le(&mut self.side_data[cur_len + 2..], size as u32)?;
+                                          self.src.read_buf(&mut self.side_data[cur_len + 6..])?;
+                },
+                6 | 7 => {
+                    self.side_data.push(ctype as u8);
+                    self.side_data.push(0);
+                    self.side_data.push(0);
+                    self.side_data.push(0);
+                    self.side_data.push(0);
+                    self.side_data.push(0);
+                },
+                8 => return Err(DemuxerError::InvalidData), //should be handled before main loop
+                9 => { // first part of interlaced frame
+                    let cur_len = self.side_data.len();
+                    self.side_data.resize(cur_len + size + 6, 0);
+                    self.side_data[cur_len] = ctype as u8;
+                    write_u32le(&mut self.side_data[cur_len + 2..], size as u32)?;
+                                          self.src.read_buf(&mut self.side_data[cur_len + 6..])?;
+                },
+                _ => {
+                                          self.src.read_skip(size)?;
+                },
+            };
+        }
+    }
+
+    fn seek(&mut self, _time: NATimePoint, _seek_index: &SeekIndex) -> DemuxerResult<()> {
+        Err(DemuxerError::NotPossible)
+    }
+    fn get_duration(&self) -> u64 { self.duration }
+}
+impl<'a> NAOptionHandler for QDemuxer<'a> {
+    fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+    fn set_options(&mut self, _options: &[NAOption]) { }
+    fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+impl<'a> QDemuxer<'a> {
+    fn new(io: &'a mut ByteReader<'a>) -> Self {
+        QDemuxer {
+            src:        io,
+            vpts:       0,
+            apts:       0,
+            bps:        0,
+            a_id:       None,
+            v_id:       None,
+            nframes:    0,
+            duration:   0,
+            side_data:  Vec::with_capacity(256 + 6),
+        }
+    }
+}
+
+pub struct QDemuxerCreator { }
+
+impl DemuxerCreator for QDemuxerCreator {
+    fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
+        Box::new(QDemuxer::new(br))
+    }
+    fn get_name(&self) -> &'static str { "legend-q" }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use std::fs::File;
+
+    #[test]
+    fn test_q_demux_v3() {
+        let mut file = File::open("assets/Game/dgate101.q").unwrap();
+        let mut fr = FileReader::new_read(&mut file);
+        let mut br = ByteReader::new(&mut fr);
+        let mut dmx = QDemuxer::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);
+        }
+    }
+
+    #[test]
+    fn test_q_demux_v4() {
+        let mut file = File::open("assets/Game/1425A5.Q").unwrap();
+        let mut fr = FileReader::new_read(&mut file);
+        let mut br = ByteReader::new(&mut fr);
+        let mut dmx = QDemuxer::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);
+        }
+    }
+
+    #[test]
+    fn test_q_demux_v5() {
+        let mut file = File::open("assets/Game/mc703.q").unwrap();
+        let mut fr = FileReader::new_read(&mut file);
+        let mut br = ByteReader::new(&mut fr);
+        let mut dmx = QDemuxer::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);
+        }
+    }
+}