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1use nihav_core::frame::*;
2use nihav_core::demuxers::*;
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3//use std::collections::HashMap;
4
5enum GDVState {
6 NewFrame,
7 AudioRead,
8}
9
10#[allow(dead_code)]
eb71d98f 11struct GremlinVideoDemuxer<'a> {
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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>,
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19 a_id: Option<usize>,
20 v_id: Option<usize>,
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21}
22
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23struct GDVFixedSizes {
24 id: u16,
25 width: u16,
26 height: u16,
27}
28const 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
bcfeae48 49impl<'a> DemuxCore<'a> for GremlinVideoDemuxer<'a> {
5869fd63 50 #[allow(unused_variables)]
33b5a8f0 51 fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> {
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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)?;
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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 }
5869fd63 75 if max_fs > 0 {
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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 }
66116504 81 let vhdr = NAVideoInfo::new(width as usize, height as usize, false, PAL8_FORMAT);
5869fd63 82 let vci = NACodecTypeInfo::Video(vhdr);
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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)));
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85 }
86 if (aflags & 1) != 0 {
87 let channels = if (aflags & 2) != 0 { 2 } else { 1 };
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88 let packed = if (aflags & 8) != 0 { 1 } else { 0 };
89 let depth = if (aflags & 4) != 0 { 16 } else { 8 };
90
e69b1148 91 let ahdr = NAAudioInfo::new(u32::from(rate), channels as u8, if depth == 16 { SND_S16_FORMAT } else { SND_U8_FORMAT }, 2);
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92 let ainfo = NACodecInfo::new(if packed != 0 { "gdv-audio" } else { "pcm" },
93 NACodecTypeInfo::Audio(ahdr), None);
e69b1148 94 self.a_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, u32::from(rate)));
5869fd63 95
81b3165f 96 self.asize = (((rate / fps) * channels * (depth / 8)) >> packed) as usize;
5869fd63 97 self.apacked = (aflags & 8) != 0;
5869fd63 98 }
5869fd63 99 self.frames = frames;
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100 self.state = GDVState::NewFrame;
101 Ok(())
102 }
103
104 #[allow(unused_variables)]
bcfeae48 105 fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
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106 if self.cur_frame >= self.frames { return Err(DemuxerError::EOF); }
107 match self.state {
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108 GDVState::NewFrame if self.asize > 0 => { self.read_achunk(strmgr) }
109 _ => { self.read_vchunk(strmgr) }
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110 }
111 }
112
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113 fn seek(&mut self, _time: u64, _seek_index: &SeekIndex) -> DemuxerResult<()> {
114 Err(DemuxerError::NotPossible)
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115 }
116}
117/*impl<'a> Drop for GremlinVideoDemuxer<'a> {
118 #[allow(unused_variables)]
119 fn drop(&mut self) {
120 }
121}*/
122impl<'a> GremlinVideoDemuxer<'a> {
eb71d98f 123 fn new(io: &'a mut ByteReader<'a>) -> Self {
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124 GremlinVideoDemuxer {
125 cur_frame: 0,
126 frames: 0,
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127 asize: 0,
128 apacked: false,
129 state: GDVState::NewFrame,
130pktdta: Vec::new(),
131 src: io,
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132 a_id: None,
133 v_id: None,
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134 }
135 }
136
bcfeae48 137 fn read_achunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
5869fd63 138 self.state = GDVState::AudioRead;
bcfeae48 139 let str = strmgr.get_stream(self.a_id.unwrap()).unwrap();
e189501e 140 let (tb_num, tb_den) = str.get_timebase();
e69b1148 141 let ts = NATimeInfo::new(Some(u64::from(self.cur_frame)), None, None, tb_num, tb_den);
e189501e 142 self.src.read_packet(str, ts, true, self.asize)
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143 }
144
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145 fn read_vchunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
146 let str = strmgr.get_stream(self.v_id.unwrap()).unwrap();
9037cf6b 147 let src = &mut self.src;
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148 let magic = src.read_u16be()?;
149 if magic != 0x0513 { return Err(DemuxerError::InvalidData); }
150 let size = (src.read_u16le()? as usize) + 4;
e24794ee 151 let tmp = src.peek_u32le()?;
5869fd63 152 let flags = (tmp & 0xFF) as usize;
5869fd63 153 self.state = GDVState::NewFrame;
e69b1148 154 self.cur_frame += 1;
e189501e 155 let (tb_num, tb_den) = str.get_timebase();
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156 let ts = NATimeInfo::new(Some(u64::from(self.cur_frame - 1)), None, None, tb_num, tb_den);
157 src.read_packet(str, ts, (flags & 64) != 0, size)
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158 }
159}
160
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161pub struct GDVDemuxerCreator { }
162
163impl DemuxerCreator for GDVDemuxerCreator {
6011e201 164 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
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165 Box::new(GremlinVideoDemuxer::new(br))
166 }
167 fn get_name(&self) -> &'static str { "gdv" }
168}
169
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170#[cfg(test)]
171mod test {
172 use super::*;
173 use std::fs::File;
174
175 #[test]
176 fn test_gdv_demux() {
1678d59a 177 let mut file = File::open("assets/Game/intro1.gdv").unwrap();
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178 let mut fr = FileReader::new_read(&mut file);
179 let mut br = ByteReader::new(&mut fr);
180 let mut dmx = GremlinVideoDemuxer::new(&mut br);
bcfeae48 181 let mut sm = StreamManager::new();
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182 let mut si = SeekIndex::new();
183 dmx.open(&mut sm, &mut si).unwrap();
5869fd63 184 loop {
bcfeae48 185 let pktres = dmx.get_frame(&mut sm);
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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}