nihav-game/src/demuxers/vmd.rs

   1 use nihav_core::frame::*;
   2 use nihav_core::demuxers::*;
   3 use std::io::SeekFrom;
   4
   5 const OLD_HEADER_SIZE: usize = 0x330;
   6 const NEW_HEADER_SIZE: usize = 0x34;
   7 const HEADER1_SIZE: usize = 28;
   8 const HEADER2_OFF: usize = HEADER1_SIZE + 768;
   9 const FRAME_HDR_SIZE: usize = 10;
  10
  11 const CHTYPE_VIDEO: u8 = 0x02;
  12 const CHTYPE_AUDIO: u8 = 0x01;
  13
  14 #[derive(Clone,Copy)]
  15 struct FrameRec {
  16     chtype:     u8,
  17     size:       u32,
  18     off:        u32,
  19     hdr:        [u8; FRAME_HDR_SIZE],
  20     ts:         u32,
  21 }
  22
  23 struct VMDDemuxer<'a> {
  24     src:        &'a mut ByteReader<'a>,
  25     vid_id:     usize,
  26     aud_id:     usize,
  27     fno:        usize,
  28     is_indeo:   bool,
  29     is_lhaud:   bool,
  30     frames:     Vec<FrameRec>,
  31 }
  32
  33 impl<'a> DemuxCore<'a> for VMDDemuxer<'a> {
  34     #[allow(unused_variables)]
  35     fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> {
  36         let src = &mut self.src;
  37
  38         let mut header: [u8; OLD_HEADER_SIZE] = [0; OLD_HEADER_SIZE];
  39                                                 src.read_buf(&mut header[..HEADER1_SIZE])?;
  40         let hdr_size = read_u16le(&header)? as usize + 2;
  41         validate!(hdr_size == OLD_HEADER_SIZE || hdr_size == NEW_HEADER_SIZE);
  42         if hdr_size == OLD_HEADER_SIZE {
  43                                                 src.read_buf(&mut header[HEADER1_SIZE..][..768])?;
  44         }
  45                                                 src.read_buf(&mut header[HEADER2_OFF..])?;
  46
  47         let mut width  = read_u16le(&header[12..])? as usize;
  48         let mut height = read_u16le(&header[14..])? as usize;
  49         self.is_indeo = &header[24..27] == b"iv3";
  50         if self.is_indeo && width > 320 {
  51             width  >>= 1;
  52             height >>= 1;
  53         }
  54
  55         let nframes = read_u16le(&header[6..])? as usize;
  56         let fpb     = read_u16le(&header[18..])? as usize;
  57         validate!(nframes > 0 && fpb > 0);
  58
  59         let mut edata: Vec<u8> = Vec::with_capacity(OLD_HEADER_SIZE);
  60         edata.extend_from_slice(&header);
  61         let vhdr = NAVideoInfo::new(width, height, false, PAL8_FORMAT);
  62         let vci = NACodecTypeInfo::Video(vhdr);
  63         let vinfo = NACodecInfo::new(if !self.is_indeo { "vmd-video" } else { "indeo3" }, vci, Some(edata));
  64         self.vid_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, 12)).unwrap();
  65
  66         let is_ext_audio = (hdr_size & 0xF) == 4;
  67         let ext_audio_id = if is_ext_audio {
  68                                                 src.read_u16le()?
  69             } else { 0 };
  70         if is_ext_audio {
  71             validate!(ext_audio_id >= 3 && ext_audio_id <= 6);
  72             self.is_lhaud = true;
  73         }
  74         let srate = u32::from(read_u16le(&header[804..])?);
  75         let block_size;
  76         if srate > 0 {
  77             let bsize = read_u16le(&header[806..])? as usize;
  78             let channels = if (header[811] & 0x8F) != 0 { 2 } else { 1 };
  79             let is16bit;
  80             if (bsize & 0x8000) != 0 {
  81                 is16bit = true;
  82                 block_size = 0x10000 - bsize;
  83             } else {
  84                 is16bit = false;
  85                 block_size = bsize;
  86             }
  87
  88             let mut aedata: Vec<u8> = Vec::with_capacity(2);
  89             aedata.extend_from_slice(&header[810..][..2]);
  90             let ahdr = NAAudioInfo::new(srate, channels, if is16bit { SND_S16P_FORMAT } else { SND_U8_FORMAT }, block_size);
  91             let ac_name = if !is_ext_audio {
  92                     "vmd-audio"
  93                 } else {
  94                     match ext_audio_id {
  95                         3 => "lhst15f8",
  96                         4 => "lhst500f22",
  97                         5 => "lhst250f11",
  98                         6 => "lhst48",
  99                         _ => "unknown",
 100                     }
 101                 };
 102             let ainfo = NACodecInfo::new(ac_name, NACodecTypeInfo::Audio(ahdr), Some(aedata));
 103             self.aud_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, srate)).unwrap();
 104         } else {
 105             block_size = 0;
 106         }
 107
 108         let adelay  = u32::from(read_u16le(&header[808..])?);
 109         let idx_off = u64::from(read_u32le(&header[812..])?);
 110                                                 src.seek(SeekFrom::Start(idx_off))?;
 111         let mut offs: Vec<u32> = Vec::with_capacity(nframes);
 112         for i in 0..nframes {
 113             let _flags                          = src.read_u16le()?;
 114             let off                             = src.read_u32le()?;
 115             offs.push(off);
 116         }
 117         self.frames.reserve(nframes * fpb);
 118         let mut ats = adelay;
 119         for i in 0..nframes {
 120             let mut off = offs[i];
 121             for _ in 0..fpb {
 122                 let chtype                      = src.read_byte()?;
 123                                                   src.read_skip(1)?;
 124                 let mut size                    = src.read_u32le()?;
 125                 let mut hdr: [u8; FRAME_HDR_SIZE] = [0; FRAME_HDR_SIZE];
 126                                                   src.read_buf(&mut hdr)?;
 127                 if (i == 0) && (chtype == CHTYPE_AUDIO) && (size > 4) && ((size as usize) < block_size/2) {
 128                     size += 0x10000;
 129                 }
 130                 if (chtype == CHTYPE_VIDEO || chtype == CHTYPE_AUDIO) && (size > 0) {
 131                     let ts = if (i == 0) || (chtype != CHTYPE_AUDIO) {
 132                             i as u32
 133                         } else {
 134                             ats
 135                         };
 136                     self.frames.push(FrameRec { chtype, size, hdr, off, ts });
 137                 }
 138                 if i > 0 && chtype == CHTYPE_AUDIO {
 139                     ats += 1;
 140                 }
 141                 if chtype != 0 {
 142                     validate!(off.checked_add(size).is_some());
 143                     off += size;
 144                 }
 145             }
 146         }
 147
 148         self.fno = 0;
 149         Ok(())
 150     }
 151
 152     fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
 153         if self.fno >= self.frames.len() { return Err(DemuxerError::EOF); }
 154         let cur_frame = &self.frames[self.fno];
 155 //println!("fno {} -> type {} size {} @ {:X} ts {}", self.fno, cur_frame.chtype, cur_frame.size, cur_frame.off, cur_frame.ts);
 156         let next_pos = u64::from(cur_frame.off);
 157         if self.src.tell() != next_pos {
 158             self.src.seek(SeekFrom::Start(next_pos))?;
 159         }
 160
 161         let is_video = cur_frame.chtype == CHTYPE_VIDEO;
 162         let mut buf: Vec<u8> = Vec::with_capacity(FRAME_HDR_SIZE + (cur_frame.size as usize));
 163         if !((is_video && self.is_indeo) || (!is_video && self.is_lhaud)) {
 164             buf.extend_from_slice(&cur_frame.hdr);
 165             buf.resize(FRAME_HDR_SIZE + (cur_frame.size as usize), 0);
 166             self.src.read_buf(&mut buf[FRAME_HDR_SIZE..])?;
 167         } else {
 168             buf.resize(cur_frame.size as usize, 0);
 169             self.src.read_buf(&mut buf)?;
 170         }
 171
 172         self.fno += 1;
 173
 174         let str_id = if is_video { self.vid_id } else { self.aud_id };
 175         let str = strmgr.get_stream(str_id).unwrap();
 176         let (tb_num, tb_den) = str.get_timebase();
 177         let ts = NATimeInfo::new(Some(u64::from(cur_frame.ts)), None, None, tb_num, tb_den);
 178         let pkt = NAPacket::new(str, ts, false, buf);
 179
 180         Ok(pkt)
 181     }
 182
 183     fn seek(&mut self, _time: NATimePoint, _seek_index: &SeekIndex) -> DemuxerResult<()> {
 184         Err(DemuxerError::NotPossible)
 185     }
 186 }
 187
 188 impl<'a> NAOptionHandler for VMDDemuxer<'a> {
 189     fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
 190     fn set_options(&mut self, _options: &[NAOption]) { }
 191     fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
 192 }
 193
 194 impl<'a> VMDDemuxer<'a> {
 195     fn new(io: &'a mut ByteReader<'a>) -> Self {
 196         Self {
 197             src:        io,
 198             vid_id:     0,
 199             aud_id:     0,
 200             fno:        0,
 201             is_indeo:   false,
 202             is_lhaud:   false,
 203             frames:     Vec::new(),
 204         }
 205     }
 206 }
 207
 208 pub struct VMDDemuxerCreator { }
 209
 210 impl DemuxerCreator for VMDDemuxerCreator {
 211     fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
 212         Box::new(VMDDemuxer::new(br))
 213     }
 214     fn get_name(&self) -> &'static str { "vmd" }
 215 }
 216
 217 #[cfg(test)]
 218 mod test {
 219     use super::*;
 220     use std::fs::File;
 221
 222     #[test]
 223     fn test_vmd_demux() {
 224         let mut file = File::open("assets/Game/128.vmd").unwrap();
 225         //let mut file = File::open("assets/Game/1491.VMD").unwrap();
 226         let mut fr = FileReader::new_read(&mut file);
 227         let mut br = ByteReader::new(&mut fr);
 228         let mut dmx = VMDDemuxer::new(&mut br);
 229         let mut sm = StreamManager::new();
 230         let mut si = SeekIndex::new();
 231         dmx.open(&mut sm, &mut si).unwrap();
 232         loop {
 233             let pktres = dmx.get_frame(&mut sm);
 234             if let Err(e) = pktres {
 235                 if (e as i32) == (DemuxerError::EOF as i32) { break; }
 236                 panic!("error");
 237             }
 238             let pkt = pktres.unwrap();
 239             println!("Got {}", pkt);
 240         }
 241     }
 242 }