nihav-game/src/demuxers/gdv.rs

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