| 1 | use nihav_core::frame::*; |
| 2 | use nihav_core::demuxers::*; |
| 3 | use std::io::SeekFrom; |
| 4 | |
| 5 | const HEADER_SIZE: usize = 0x330; |
| 6 | const FRAME_HDR_SIZE: usize = 10; |
| 7 | |
| 8 | const CHTYPE_VIDEO: u8 = 0x02; |
| 9 | const CHTYPE_AUDIO: u8 = 0x01; |
| 10 | |
| 11 | #[derive(Clone,Copy)] |
| 12 | struct FrameRec { |
| 13 | chtype: u8, |
| 14 | size: u32, |
| 15 | off: u32, |
| 16 | hdr: [u8; FRAME_HDR_SIZE], |
| 17 | ts: u32, |
| 18 | } |
| 19 | |
| 20 | struct VMDDemuxer<'a> { |
| 21 | src: &'a mut ByteReader<'a>, |
| 22 | vid_id: usize, |
| 23 | aud_id: usize, |
| 24 | fno: usize, |
| 25 | is_indeo: bool, |
| 26 | frames: Vec<FrameRec>, |
| 27 | } |
| 28 | |
| 29 | impl<'a> DemuxCore<'a> for VMDDemuxer<'a> { |
| 30 | #[allow(unused_variables)] |
| 31 | fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> { |
| 32 | let src = &mut self.src; |
| 33 | |
| 34 | let mut header: [u8; HEADER_SIZE] = [0; HEADER_SIZE]; |
| 35 | src.read_buf(&mut header)?; |
| 36 | |
| 37 | let mut width = read_u16le(&header[12..])? as usize; |
| 38 | let mut height = read_u16le(&header[14..])? as usize; |
| 39 | self.is_indeo = &header[24..27] == b"iv3"; |
| 40 | if self.is_indeo && width > 320 { |
| 41 | width >>= 1; |
| 42 | height >>= 1; |
| 43 | } |
| 44 | |
| 45 | let nframes = read_u16le(&header[6..])? as usize; |
| 46 | let fpb = read_u16le(&header[18..])? as usize; |
| 47 | validate!(nframes > 0 && fpb > 0); |
| 48 | |
| 49 | let mut edata: Vec<u8> = Vec::with_capacity(HEADER_SIZE); |
| 50 | edata.extend_from_slice(&header); |
| 51 | let vhdr = NAVideoInfo::new(width, height, false, PAL8_FORMAT); |
| 52 | let vci = NACodecTypeInfo::Video(vhdr); |
| 53 | let vinfo = NACodecInfo::new(if !self.is_indeo { "vmd-video" } else { "indeo3" }, vci, Some(edata)); |
| 54 | self.vid_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, 12)).unwrap(); |
| 55 | |
| 56 | let srate = u32::from(read_u16le(&header[804..])?); |
| 57 | let block_size; |
| 58 | if srate > 0 { |
| 59 | let bsize = read_u16le(&header[806..])? as usize; |
| 60 | let channels = if (header[811] & 0x8F) != 0 { 2 } else { 1 }; |
| 61 | let is16bit; |
| 62 | if (bsize & 0x8000) != 0 { |
| 63 | is16bit = true; |
| 64 | block_size = 0x10000 - bsize; |
| 65 | } else { |
| 66 | is16bit = false; |
| 67 | block_size = bsize; |
| 68 | } |
| 69 | |
| 70 | let ahdr = NAAudioInfo::new(srate, channels, if is16bit { SND_S16P_FORMAT } else { SND_U8_FORMAT }, block_size); |
| 71 | let ainfo = NACodecInfo::new("vmd-audio", NACodecTypeInfo::Audio(ahdr), None); |
| 72 | self.aud_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, srate)).unwrap(); |
| 73 | } else { |
| 74 | block_size = 0; |
| 75 | } |
| 76 | |
| 77 | let adelay = u32::from(read_u16le(&header[808..])?); |
| 78 | let idx_off = u64::from(read_u32le(&header[812..])?); |
| 79 | src.seek(SeekFrom::Start(idx_off))?; |
| 80 | let mut offs: Vec<u32> = Vec::with_capacity(nframes); |
| 81 | for i in 0..nframes { |
| 82 | let _flags = src.read_u16le()?; |
| 83 | let off = src.read_u32le()?; |
| 84 | offs.push(off); |
| 85 | } |
| 86 | self.frames.reserve(nframes * fpb); |
| 87 | let mut ats = adelay; |
| 88 | for i in 0..nframes { |
| 89 | let mut off = offs[i]; |
| 90 | for _ in 0..fpb { |
| 91 | let chtype = src.read_byte()?; |
| 92 | src.read_skip(1)?; |
| 93 | let mut size = src.read_u32le()?; |
| 94 | let mut hdr: [u8; FRAME_HDR_SIZE] = [0; FRAME_HDR_SIZE]; |
| 95 | src.read_buf(&mut hdr)?; |
| 96 | if (i == 0) && (chtype == CHTYPE_AUDIO) && (size > 4) && ((size as usize) < block_size/2) { |
| 97 | size += 0x10000; |
| 98 | } |
| 99 | if (chtype == CHTYPE_VIDEO || chtype == CHTYPE_AUDIO) && (size > 0) { |
| 100 | let ts = if (i == 0) || (chtype != CHTYPE_AUDIO) { |
| 101 | i as u32 |
| 102 | } else { |
| 103 | ats |
| 104 | }; |
| 105 | self.frames.push(FrameRec { chtype, size, hdr, off, ts }); |
| 106 | } |
| 107 | if i > 0 && chtype == CHTYPE_AUDIO { |
| 108 | ats += 1; |
| 109 | } |
| 110 | if chtype != 0 { |
| 111 | validate!(off.checked_add(size).is_some()); |
| 112 | off += size; |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | self.fno = 0; |
| 118 | Ok(()) |
| 119 | } |
| 120 | |
| 121 | fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> { |
| 122 | if self.fno >= self.frames.len() { return Err(DemuxerError::EOF); } |
| 123 | let cur_frame = &self.frames[self.fno]; |
| 124 | //println!("fno {} -> type {} size {} @ {:X} ts {}", self.fno, cur_frame.chtype, cur_frame.size, cur_frame.off, cur_frame.ts); |
| 125 | let next_pos = u64::from(cur_frame.off); |
| 126 | if self.src.tell() != next_pos { |
| 127 | self.src.seek(SeekFrom::Start(next_pos))?; |
| 128 | } |
| 129 | |
| 130 | let is_video = cur_frame.chtype == CHTYPE_VIDEO; |
| 131 | let mut buf: Vec<u8> = Vec::with_capacity(FRAME_HDR_SIZE + (cur_frame.size as usize)); |
| 132 | if !self.is_indeo || !is_video { |
| 133 | buf.extend_from_slice(&cur_frame.hdr); |
| 134 | buf.resize(FRAME_HDR_SIZE + (cur_frame.size as usize), 0); |
| 135 | self.src.read_buf(&mut buf[FRAME_HDR_SIZE..])?; |
| 136 | } else { |
| 137 | buf.resize(cur_frame.size as usize, 0); |
| 138 | self.src.read_buf(&mut buf)?; |
| 139 | } |
| 140 | |
| 141 | self.fno += 1; |
| 142 | |
| 143 | let str_id = if is_video { self.vid_id } else { self.aud_id }; |
| 144 | let str = strmgr.get_stream(str_id).unwrap(); |
| 145 | let (tb_num, tb_den) = str.get_timebase(); |
| 146 | let ts = NATimeInfo::new(Some(u64::from(cur_frame.ts)), None, None, tb_num, tb_den); |
| 147 | let pkt = NAPacket::new(str, ts, false, buf); |
| 148 | |
| 149 | Ok(pkt) |
| 150 | } |
| 151 | |
| 152 | fn seek(&mut self, _time: u64, _seek_index: &SeekIndex) -> DemuxerResult<()> { |
| 153 | Err(DemuxerError::NotPossible) |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | impl<'a> VMDDemuxer<'a> { |
| 158 | fn new(io: &'a mut ByteReader<'a>) -> Self { |
| 159 | Self { |
| 160 | src: io, |
| 161 | vid_id: 0, |
| 162 | aud_id: 0, |
| 163 | fno: 0, |
| 164 | is_indeo: false, |
| 165 | frames: Vec::new(), |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | pub struct VMDDemuxerCreator { } |
| 171 | |
| 172 | impl DemuxerCreator for VMDDemuxerCreator { |
| 173 | fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> { |
| 174 | Box::new(VMDDemuxer::new(br)) |
| 175 | } |
| 176 | fn get_name(&self) -> &'static str { "vmd" } |
| 177 | } |
| 178 | |
| 179 | #[cfg(test)] |
| 180 | mod test { |
| 181 | use super::*; |
| 182 | use std::fs::File; |
| 183 | |
| 184 | #[test] |
| 185 | fn test_vmd_demux() { |
| 186 | let mut file = File::open("assets/Game/128.vmd").unwrap(); |
| 187 | //let mut file = File::open("assets/Game/1491.VMD").unwrap(); |
| 188 | let mut fr = FileReader::new_read(&mut file); |
| 189 | let mut br = ByteReader::new(&mut fr); |
| 190 | let mut dmx = VMDDemuxer::new(&mut br); |
| 191 | let mut sm = StreamManager::new(); |
| 192 | dmx.open(&mut sm).unwrap(); |
| 193 | loop { |
| 194 | let pktres = dmx.get_frame(&mut sm); |
| 195 | if let Err(e) = pktres { |
| 196 | if (e as i32) == (DemuxerError::EOF as i32) { break; } |
| 197 | panic!("error"); |
| 198 | } |
| 199 | let pkt = pktres.unwrap(); |
| 200 | println!("Got {}", pkt); |
| 201 | } |
| 202 | } |
| 203 | } |