| 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, if depth < 2 { PAL8_FORMAT } else { RGB565_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(fps), 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 | // sample from Normality game |
| 184 | let mut file = File::open("assets/Game/intro1.gdv").unwrap(); |
| 185 | let mut fr = FileReader::new_read(&mut file); |
| 186 | let mut br = ByteReader::new(&mut fr); |
| 187 | let mut dmx = GremlinVideoDemuxer::new(&mut br); |
| 188 | let mut sm = StreamManager::new(); |
| 189 | let mut si = SeekIndex::new(); |
| 190 | dmx.open(&mut sm, &mut si).unwrap(); |
| 191 | loop { |
| 192 | let pktres = dmx.get_frame(&mut sm); |
| 193 | if let Err(e) = pktres { |
| 194 | if (e as i32) == (DemuxerError::EOF as i32) { break; } |
| 195 | panic!("error"); |
| 196 | } |
| 197 | let pkt = pktres.unwrap(); |
| 198 | println!("Got {}", pkt); |
| 199 | } |
| 200 | } |
| 201 | } |