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) -> 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.len() == 0 { None } else { Some(edata) });
  84             self.v_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, fps as u32));
  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(rate as u32, 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, rate as u32));
  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     #[allow(unused_variables)]
 114     fn seek(&mut self, time: u64) -> DemuxerResult<()> {
 115         Err(DemuxerError::NotImplemented)
 116     }
 117 }
 118 /*impl<'a> Drop for GremlinVideoDemuxer<'a> {
 119     #[allow(unused_variables)]
 120     fn drop(&mut self) {
 121     }
 122 }*/
 123 impl<'a> GremlinVideoDemuxer<'a> {
 124     fn new(io: &'a mut ByteReader<'a>) -> Self {
 125         GremlinVideoDemuxer {
 126             cur_frame: 0,
 127             frames: 0,
 128             asize: 0,
 129             apacked: false,
 130             state: GDVState::NewFrame,
 131 pktdta: Vec::new(),
 132             src: io,
 133             a_id: None,
 134             v_id: None,
 135         }
 136     }
 137
 138     fn read_achunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
 139         self.state = GDVState::AudioRead;
 140         let str = strmgr.get_stream(self.a_id.unwrap()).unwrap();
 141         let (tb_num, tb_den) = str.get_timebase();
 142         let ts = NATimeInfo::new(Some(self.cur_frame as u64), None, None, tb_num, tb_den);
 143         self.src.read_packet(str, ts, true, self.asize)
 144     }
 145
 146     fn read_vchunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
 147         let str = strmgr.get_stream(self.v_id.unwrap()).unwrap();
 148         let src = &mut self.src;
 149         let magic = src.read_u16be()?;
 150         if magic != 0x0513 { return Err(DemuxerError::InvalidData); }
 151         let size = (src.read_u16le()? as usize) + 4;
 152         let tmp = src.peek_u32le()?;
 153         let flags = (tmp & 0xFF) as usize;
 154         self.state = GDVState::NewFrame;
 155         self.cur_frame = self.cur_frame + 1;
 156         let (tb_num, tb_den) = str.get_timebase();
 157         let ts = NATimeInfo::new(Some((self.cur_frame - 1) as u64), None, None, tb_num, tb_den);
 158         src.read_packet(str, ts, if (flags & 64) != 0 { true } else { false }, size)
 159     }
 160 }
 161
 162 pub struct GDVDemuxerCreator { }
 163
 164 impl DemuxerCreator for GDVDemuxerCreator {
 165     fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<DemuxCore<'a> + 'a> {
 166         Box::new(GremlinVideoDemuxer::new(br))
 167     }
 168     fn get_name(&self) -> &'static str { "gdv" }
 169 }
 170
 171 #[cfg(test)]
 172 mod test {
 173     use super::*;
 174     use std::fs::File;
 175
 176     #[test]
 177     fn test_gdv_demux() {
 178         let mut file = File::open("assets/Game/intro1.gdv").unwrap();
 179         let mut fr = FileReader::new_read(&mut file);
 180         let mut br = ByteReader::new(&mut fr);
 181         let mut dmx = GremlinVideoDemuxer::new(&mut br);
 182         let mut sm = StreamManager::new();
 183         dmx.open(&mut sm).unwrap();
 184         loop {
 185             let pktres = dmx.get_frame(&mut sm);
 186             if let Err(e) = pktres {
 187                 if (e as i32) == (DemuxerError::EOF as i32) { break; }
 188                 panic!("error");
 189             }
 190             let pkt = pktres.unwrap();
 191             println!("Got {}", pkt);
 192         }
 193     }
 194 }