nihav-game/src/demuxers/gdv.rs

   1 use nihav_core::frame::*;
   2 use nihav_core::demuxers::*;
   3 //use std::collections::HashMap;
   4
   5 enum GDVState {
   6     NewFrame,
   7     AudioRead,
   8 }
   9
  10 #[allow(dead_code)]
  11 struct GremlinVideoDemuxer<'a> {
  12     src:        &'a mut ByteReader<'a>,
  13     frames:     u16,
  14     cur_frame:  u16,
  15     asize:      usize,
  16     apacked:    bool,
  17     state:      GDVState,
  18     pktdta:     Vec<u8>,
  19     a_id:       Option<usize>,
  20     v_id:       Option<usize>,
  21 }
  22
  23 struct GDVFixedSizes {
  24     id:     u16,
  25     width:  u16,
  26     height: u16,
  27 }
  28 const GDV_SIZE_TABLE: &[GDVFixedSizes] = &[
  29     GDVFixedSizes { id:  0, width: 320, height: 200 },
  30     GDVFixedSizes { id:  1, width: 640, height: 200 },
  31     GDVFixedSizes { id:  2, width: 320, height: 167 },
  32     GDVFixedSizes { id:  3, width: 320, height: 180 },
  33     GDVFixedSizes { id:  4, width: 320, height: 400 },
  34     GDVFixedSizes { id:  5, width: 320, height: 170 },
  35     GDVFixedSizes { id:  6, width: 160, height:  85 },
  36     GDVFixedSizes { id:  7, width: 160, height:  83 },
  37     GDVFixedSizes { id:  8, width: 160, height:  90 },
  38     GDVFixedSizes { id:  9, width: 280, height: 128 },
  39     GDVFixedSizes { id: 10, width: 320, height: 240 },
  40     GDVFixedSizes { id: 11, width: 320, height: 201 },
  41     GDVFixedSizes { id: 16, width: 640, height: 400 },
  42     GDVFixedSizes { id: 17, width: 640, height: 200 },
  43     GDVFixedSizes { id: 18, width: 640, height: 180 },
  44     GDVFixedSizes { id: 19, width: 640, height: 167 },
  45     GDVFixedSizes { id: 20, width: 640, height: 170 },
  46     GDVFixedSizes { id: 21, width: 320, height: 240 },
  47 ];
  48
  49 impl<'a> DemuxCore<'a> for GremlinVideoDemuxer<'a> {
  50     #[allow(unused_variables)]
  51     fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> {
  52         let src = &mut self.src;
  53         let magic = src.read_u32le()?;
  54         if magic != 0x29111994 { return Err(DemuxerError::InvalidData); }
  55         let id = src.read_u16le()?;
  56         let frames = src.read_u16le()?;
  57         let fps = src.read_u16le()?;
  58         let aflags = src.read_u16le()?;
  59         let rate = src.read_u16le()?;
  60         let depth = src.read_u16le()?;
  61         let max_fs = src.read_u16le()?;
  62         src.read_skip(2)?;
  63         let mut width = src.read_u16le()?;
  64         let mut height = src.read_u16le()?;
  65         if (width == 0) && (height == 0) {
  66             for el in GDV_SIZE_TABLE {
  67                 if el.id == id {
  68                     width  = el.width;
  69                     height = el.height;
  70                     break;
  71                 }
  72             }
  73             if (width == 0) && (height == 0) { return Err(DemuxerError::InvalidData); }
  74         }
  75         if max_fs > 0 {
  76             let mut edata: Vec<u8> = Vec::with_capacity(768);
  77             if depth == 1 {
  78                 edata.resize(768, 0);
  79                 src.read_buf(edata.as_mut_slice())?;
  80             }
  81             let vhdr = NAVideoInfo::new(width as usize, height as usize, false, PAL8_FORMAT);
  82             let vci = NACodecTypeInfo::Video(vhdr);
  83             let vinfo = NACodecInfo::new("gdv-video", vci, if edata.is_empty() { None } else { Some(edata) });
  84             self.v_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, u32::from(fps), u64::from(frames)));
  85         }
  86         if (aflags & 1) != 0 {
  87             let channels = if (aflags & 2) != 0 { 2 } else { 1 };
  88             let packed   = if (aflags & 8) != 0 { 1 } else { 0 };
  89             let depth    = if (aflags & 4) != 0 { 16 } else { 8 };
  90
  91             let ahdr = NAAudioInfo::new(u32::from(rate), channels as u8, if depth == 16 { SND_S16_FORMAT } else { SND_U8_FORMAT }, 2);
  92             let ainfo = NACodecInfo::new(if packed != 0 { "gdv-audio" } else { "pcm" },
  93                                          NACodecTypeInfo::Audio(ahdr), None);
  94             self.a_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, u32::from(rate), 0));
  95
  96             self.asize = (((rate / fps) * channels * (depth / 8)) >> packed) as usize;
  97             self.apacked = (aflags & 8) != 0;
  98         }
  99         self.frames = frames;
 100         self.state = GDVState::NewFrame;
 101         Ok(())
 102     }
 103
 104     #[allow(unused_variables)]
 105     fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
 106         if self.cur_frame >= self.frames { return Err(DemuxerError::EOF); }
 107         match self.state {
 108             GDVState::NewFrame if self.asize > 0 => { self.read_achunk(strmgr) }
 109             _ => { self.read_vchunk(strmgr) }
 110         }
 111     }
 112
 113     fn seek(&mut self, _time: NATimePoint, _seek_index: &SeekIndex) -> DemuxerResult<()> {
 114         Err(DemuxerError::NotPossible)
 115     }
 116     fn get_duration(&self) -> u64 { 0 }
 117 }
 118 impl<'a> NAOptionHandler for GremlinVideoDemuxer<'a> {
 119     fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
 120     fn set_options(&mut self, _options: &[NAOption]) { }
 121     fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
 122 }
 123 /*impl<'a> Drop for GremlinVideoDemuxer<'a> {
 124     #[allow(unused_variables)]
 125     fn drop(&mut self) {
 126     }
 127 }*/
 128 impl<'a> GremlinVideoDemuxer<'a> {
 129     fn new(io: &'a mut ByteReader<'a>) -> Self {
 130         GremlinVideoDemuxer {
 131             cur_frame: 0,
 132             frames: 0,
 133             asize: 0,
 134             apacked: false,
 135             state: GDVState::NewFrame,
 136 pktdta: Vec::new(),
 137             src: io,
 138             a_id: None,
 139             v_id: None,
 140         }
 141     }
 142
 143     fn read_achunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
 144         self.state = GDVState::AudioRead;
 145         let str = strmgr.get_stream(self.a_id.unwrap()).unwrap();
 146         let (tb_num, tb_den) = str.get_timebase();
 147         let ts = NATimeInfo::new(Some(u64::from(self.cur_frame)), None, None, tb_num, tb_den);
 148         self.src.read_packet(str, ts, true, self.asize)
 149     }
 150
 151     fn read_vchunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
 152         let str = strmgr.get_stream(self.v_id.unwrap()).unwrap();
 153         let src = &mut self.src;
 154         let magic = src.read_u16be()?;
 155         if magic != 0x0513 { return Err(DemuxerError::InvalidData); }
 156         let size = (src.read_u16le()? as usize) + 4;
 157         let tmp = src.peek_u32le()?;
 158         let flags = (tmp & 0xFF) as usize;
 159         self.state = GDVState::NewFrame;
 160         self.cur_frame += 1;
 161         let (tb_num, tb_den) = str.get_timebase();
 162         let ts = NATimeInfo::new(Some(u64::from(self.cur_frame - 1)), None, None, tb_num, tb_den);
 163         src.read_packet(str, ts, (flags & 64) != 0, size)
 164     }
 165 }
 166
 167 pub struct GDVDemuxerCreator { }
 168
 169 impl DemuxerCreator for GDVDemuxerCreator {
 170     fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
 171         Box::new(GremlinVideoDemuxer::new(br))
 172     }
 173     fn get_name(&self) -> &'static str { "gdv" }
 174 }
 175
 176 #[cfg(test)]
 177 mod test {
 178     use super::*;
 179     use std::fs::File;
 180
 181     #[test]
 182     fn test_gdv_demux() {
 183         let mut file = File::open("assets/Game/intro1.gdv").unwrap();
 184         let mut fr = FileReader::new_read(&mut file);
 185         let mut br = ByteReader::new(&mut fr);
 186         let mut dmx = GremlinVideoDemuxer::new(&mut br);
 187         let mut sm = StreamManager::new();
 188         let mut si = SeekIndex::new();
 189         dmx.open(&mut sm, &mut si).unwrap();
 190         loop {
 191             let pktres = dmx.get_frame(&mut sm);
 192             if let Err(e) = pktres {
 193                 if (e as i32) == (DemuxerError::EOF as i32) { break; }
 194                 panic!("error");
 195             }
 196             let pkt = pktres.unwrap();
 197             println!("Got {}", pkt);
 198         }
 199     }
 200 }