nihav-game/src/demuxers/bmv.rs

   1 use nihav_core::frame::*;
   2 use nihav_core::demuxers::*;
   3
   4 struct BMVDemuxer<'a> {
   5     src:        &'a mut ByteReader<'a>,
   6     vid_id:     usize,
   7     aud_id:     usize,
   8     vpos:       u64,
   9     apos:       u64,
  10     pkt_buf:    Vec<NAPacket>,
  11 }
  12
  13 impl<'a> DemuxCore<'a> for BMVDemuxer<'a> {
  14     #[allow(unused_variables)]
  15     fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> {
  16         let src = &mut self.src;
  17
  18         let vhdr = NAVideoInfo::new(640, 429, false, PAL8_FORMAT);
  19         let vci = NACodecTypeInfo::Video(vhdr);
  20         let vinfo = NACodecInfo::new("bmv-video", vci, None);
  21         self.vid_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, 12, 0)).unwrap();
  22
  23         let ahdr = NAAudioInfo::new(22050, 2, SND_S16_FORMAT, 1);
  24         let ainfo = NACodecInfo::new("bmv-audio", NACodecTypeInfo::Audio(ahdr), None);
  25         self.aud_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, 22050, 0)).unwrap();
  26
  27         self.vpos       = 0;
  28         self.apos       = 0;
  29         Ok(())
  30     }
  31
  32     fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
  33         if !self.pkt_buf.is_empty() {
  34             return Ok(self.pkt_buf.pop().unwrap());
  35         }
  36
  37         loop {
  38             let ctype                   = self.src.read_byte()?;
  39             if ctype == 0 { // NOP chunk
  40                 continue;
  41             }
  42             if ctype == 1 { return Err(DemuxerError::EOF); }
  43             let size                    = self.src.read_u24le()? as usize;
  44             validate!(size > 0);
  45             let asize;
  46             if (ctype & 0x20) != 0 {
  47                 let nblocks             = self.src.peek_byte()?;
  48                 asize = (nblocks as usize) * 65 + 1;
  49                 validate!(asize < size);
  50                 let str = strmgr.get_stream(self.aud_id).unwrap();
  51                 let (tb_num, tb_den) = str.get_timebase();
  52                 let ts = NATimeInfo::new(Some(self.apos), None, None, tb_num, tb_den);
  53                 let apkt = self.src.read_packet(str, ts, false, asize)?;
  54                 self.apos += u64::from(nblocks) * 32;
  55                 self.pkt_buf.push(apkt);
  56             } else {
  57                 asize = 0;
  58             }
  59             let mut buf: Vec<u8> = vec![0; size - asize + 1];
  60             buf[0] = ctype;
  61             self.src.read_buf(&mut buf[1..])?;
  62
  63             let str = strmgr.get_stream(self.vid_id).unwrap();
  64             let (tb_num, tb_den) = str.get_timebase();
  65             let ts = NATimeInfo::new(Some(self.vpos), None, None, tb_num, tb_den);
  66             let pkt = NAPacket::new(str, ts, (ctype & 3) == 3, buf);
  67
  68             self.vpos += 1;
  69             return Ok(pkt);
  70         }
  71     }
  72
  73     fn seek(&mut self, _time: NATimePoint, _seek_index: &SeekIndex) -> DemuxerResult<()> {
  74         Err(DemuxerError::NotPossible)
  75     }
  76     fn get_duration(&self) -> u64 { 0 }
  77 }
  78
  79 impl<'a> NAOptionHandler for BMVDemuxer<'a> {
  80     fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
  81     fn set_options(&mut self, _options: &[NAOption]) { }
  82     fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
  83 }
  84
  85 impl<'a> BMVDemuxer<'a> {
  86     fn new(io: &'a mut ByteReader<'a>) -> Self {
  87         Self {
  88             src:        io,
  89             vid_id:     0,
  90             aud_id:     0,
  91             vpos:       0,
  92             apos:       0,
  93             pkt_buf:    Vec::with_capacity(1),
  94         }
  95     }
  96 }
  97
  98 pub struct BMVDemuxerCreator { }
  99
 100 impl DemuxerCreator for BMVDemuxerCreator {
 101     fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
 102         Box::new(BMVDemuxer::new(br))
 103     }
 104     fn get_name(&self) -> &'static str { "bmv" }
 105 }
 106
 107 struct BMV3Demuxer<'a> {
 108     src:        &'a mut ByteReader<'a>,
 109     vid_id:     usize,
 110     aud_id:     usize,
 111     vpos:       u64,
 112     apos:       u64,
 113     asize:      usize,
 114     ablob:      usize,
 115     pkt_buf:    Vec<NAPacket>,
 116 }
 117
 118 impl<'a> DemuxCore<'a> for BMV3Demuxer<'a> {
 119     #[allow(unused_variables)]
 120     #[allow(clippy::cast_lossless)]
 121     fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> {
 122         let src = &mut self.src;
 123
 124         let mut magic = [0u8; 4];
 125                                             src.read_buf(&mut magic)?;
 126         validate!(&magic[0..] == b"BMVi");
 127         let size                            = src.read_u32le()?;
 128         validate!(size == 24);
 129         let _slot_size                      = src.read_u32le()? as usize;
 130         let nframes                         = src.read_u32le()? as usize;
 131         let _prefetch_slots                 = src.read_u16le()?;
 132         let _cache_size                     = src.read_u16le()?;
 133         let fps                             = src.read_u16le()? as u32;
 134         let audio_size                      = src.read_u16le()? as usize;
 135         let audio_blob_size                 = src.read_u16le()? as usize;
 136         let _audio_id                       = src.read_byte()?;
 137         let _video_id                       = src.read_byte()?;
 138         let width                           = src.read_u16le()? as usize;
 139         let height                          = src.read_u16le()? as usize;
 140         validate!(nframes > 0);
 141         validate!((width > 0) && (width <= 640));
 142         validate!((height > 0) && (height <= 432));
 143         validate!((audio_size > audio_blob_size) && (audio_blob_size > 0) && (audio_size % audio_blob_size == 0));
 144         let mut dta = [0u8; 4];
 145                                             src.read_buf(&mut dta)?;
 146         validate!(&dta[0..] == b"DATA");
 147         let data_size                       = src.read_u32le()? as usize;
 148         validate!(data_size > 0);
 149         self.asize = audio_size;
 150         self.ablob = audio_blob_size;
 151
 152         let vhdr = NAVideoInfo::new(width, height, false, RGB565_FORMAT);
 153         let vci = NACodecTypeInfo::Video(vhdr);
 154         let vinfo = NACodecInfo::new("bmv3-video", vci, None);
 155         self.vid_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 256, fps, nframes as u64)).unwrap();
 156
 157         let ahdr = NAAudioInfo::new(22050, 2, SND_S16_FORMAT, audio_blob_size);
 158         let ainfo = NACodecInfo::new("bmv3-audio", NACodecTypeInfo::Audio(ahdr), None);
 159         self.aud_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, 22050, 0)).unwrap();
 160
 161         self.vpos       = 0;
 162         self.apos       = 0;
 163         Ok(())
 164     }
 165
 166     fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
 167         if !self.pkt_buf.is_empty() {
 168             return Ok(self.pkt_buf.pop().unwrap());
 169         }
 170
 171         loop {
 172             let ctype                       = self.src.read_byte()?;
 173             if ctype == 0 { // NOP chunk
 174                 continue;
 175             }
 176             if ctype == 1 { return Err(DemuxerError::EOF); }
 177             let size                    = self.src.read_u24le()? as usize;
 178             if size == 0 { continue; }
 179             let asize;
 180             if (ctype & 0x20) != 0 {
 181                 if (ctype & 0x40) != 0 {
 182                     asize = self.asize - self.ablob;
 183                 } else {
 184                     asize = self.asize;
 185                 }
 186                 validate!(asize <= size);
 187                 let mut buf: Vec<u8> = vec![0; asize + 1];
 188                 buf[0] = (self.src.tell() & 1) as u8;
 189                 self.src.read_buf(&mut buf[1..])?;
 190
 191                 let str = strmgr.get_stream(self.aud_id).unwrap();
 192                 let (tb_num, tb_den) = str.get_timebase();
 193                 let ts = NATimeInfo::new(Some(self.apos), None, None, tb_num, tb_den);
 194                 let apkt = NAPacket::new(str, ts, false, buf);
 195
 196                 self.apos += (asize as u64) / 41 * 32;
 197                 self.pkt_buf.push(apkt);
 198             } else {
 199                 asize = 0;
 200             }
 201             if size == asize {
 202                 if !self.pkt_buf.is_empty() {
 203                     return Ok(self.pkt_buf.pop().unwrap());
 204                 } else {
 205                     continue;
 206                 }
 207             }
 208             let mut buf: Vec<u8> = vec![0; size - asize + 1];
 209             buf[0] = ctype;
 210             self.src.read_buf(&mut buf[1..])?;
 211
 212             let str = strmgr.get_stream(self.vid_id).unwrap();
 213             let (tb_num, tb_den) = str.get_timebase();
 214             let ts = NATimeInfo::new(Some(self.vpos), None, None, tb_num, tb_den);
 215             let pkt = NAPacket::new(str, ts, (ctype & 3) == 3, buf);
 216
 217             self.vpos += 1;
 218             return Ok(pkt);
 219         }
 220     }
 221
 222     fn seek(&mut self, _time: NATimePoint, _seek_index: &SeekIndex) -> DemuxerResult<()> {
 223         Err(DemuxerError::NotPossible)
 224     }
 225     fn get_duration(&self) -> u64 { 0 }
 226 }
 227
 228 impl<'a> NAOptionHandler for BMV3Demuxer<'a> {
 229     fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
 230     fn set_options(&mut self, _options: &[NAOption]) { }
 231     fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
 232 }
 233
 234 impl<'a> BMV3Demuxer<'a> {
 235     fn new(io: &'a mut ByteReader<'a>) -> Self {
 236         Self {
 237             src:        io,
 238             vid_id:     0,
 239             aud_id:     0,
 240             vpos:       0,
 241             apos:       0,
 242             asize:      0,
 243             ablob:      0,
 244             pkt_buf:    Vec::with_capacity(1),
 245         }
 246     }
 247 }
 248
 249 pub struct BMV3DemuxerCreator { }
 250
 251 impl DemuxerCreator for BMV3DemuxerCreator {
 252     fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
 253         Box::new(BMV3Demuxer::new(br))
 254     }
 255     fn get_name(&self) -> &'static str { "bmv3" }
 256 }
 257
 258 #[cfg(test)]
 259 mod test {
 260     use super::*;
 261     use std::fs::File;
 262
 263     #[test]
 264     fn test_bmv_demux() {
 265         let mut file = File::open("assets/Game/DW2-MOUSE.BMV").unwrap();
 266         let mut fr = FileReader::new_read(&mut file);
 267         let mut br = ByteReader::new(&mut fr);
 268         let mut dmx = BMVDemuxer::new(&mut br);
 269         let mut sm = StreamManager::new();
 270         let mut si = SeekIndex::new();
 271         dmx.open(&mut sm, &mut si).unwrap();
 272         loop {
 273             let pktres = dmx.get_frame(&mut sm);
 274             if let Err(e) = pktres {
 275                 if (e as i32) == (DemuxerError::EOF as i32) { break; }
 276                 panic!("error");
 277             }
 278             let pkt = pktres.unwrap();
 279             println!("Got {}", pkt);
 280         }
 281     }
 282     #[test]
 283     fn test_bmv3_demux() {
 284         let mut file = File::open("assets/Game/DW3-Loffnote.bmv").unwrap();
 285         let mut fr = FileReader::new_read(&mut file);
 286         let mut br = ByteReader::new(&mut fr);
 287         let mut dmx = BMV3Demuxer::new(&mut br);
 288         let mut sm = StreamManager::new();
 289         let mut si = SeekIndex::new();
 290         dmx.open(&mut sm, &mut si).unwrap();
 291         loop {
 292             let pktres = dmx.get_frame(&mut sm);
 293             if let Err(e) = pktres {
 294                 if (e as i32) == (DemuxerError::EOF as i32) { break; }
 295                 panic!("error");
 296             }
 297             let pkt = pktres.unwrap();
 298             println!("Got {}", pkt);
 299         }
 300     }
 301 }