nihav-commonfmt/src/demuxers/avi.rs

   1 use nihav_core::demuxers::*;
   2 use nihav_core::register;
   3 use nihav_core::demuxers::DemuxerError::*;
   4
   5 macro_rules! mktag {
   6     ($a:expr, $b:expr, $c:expr, $d:expr) => ({
   7         (($a as u32) << 24) | (($b as u32) << 16) | (($c as u32) << 8) | ($d as u32)
   8     });
   9     ($arr:expr) => ({
  10         (($arr[0] as u32) << 24) | (($arr[1] as u32) << 16) | (($arr[2] as u32) << 8) | ($arr[3] as u32)
  11     });
  12 }
  13
  14 struct StreamState {
  15     strm_no:    u8,
  16     got_strf:   bool,
  17     strm_type:  Option<StreamType>,
  18 }
  19
  20 impl StreamState {
  21     fn new() -> Self {
  22         StreamState { strm_no: 0, got_strf: true, strm_type: None }
  23     }
  24     fn reset(&mut self) {
  25         self.strm_type = None;
  26         self.got_strf  = true;
  27         self.strm_no  += 1;
  28     }
  29     fn valid_state(&self) -> bool {
  30         match self.strm_type {
  31             None => self.got_strf,
  32             _    => false,
  33         }
  34     }
  35 }
  36
  37 #[allow(dead_code)]
  38 struct AVIDemuxer<'a> {
  39     src:            &'a mut ByteReader<'a>,
  40     cur_frame:      Vec<u64>,
  41     num_streams:    u8,
  42     size:           usize,
  43     movi_size:      usize,
  44     sstate:         StreamState,
  45     tb_num:         u32,
  46     tb_den:         u32,
  47 }
  48
  49 #[derive(Debug,Clone,Copy,PartialEq)]
  50 enum RIFFTag {
  51     Chunk(u32),
  52     List(u32,u32),
  53 }
  54
  55 struct RIFFParser {
  56     tag:   RIFFTag,
  57     parse: fn(&mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize>,
  58 }
  59
  60 impl<'a> DemuxCore<'a> for AVIDemuxer<'a> {
  61     #[allow(unused_variables)]
  62     fn open(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
  63         self.read_header(strmgr)?;
  64         Ok(())
  65     }
  66
  67     fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
  68         if self.movi_size == 0 { return Err(EOF); }
  69         let mut tag: [u8; 4] = [0; 4];
  70         loop {
  71             if (self.src.tell() & 1) == 1 {
  72                 self.src.read_skip(1)?;
  73                 self.movi_size -= 1;
  74                 if self.movi_size == 0 { return Err(EOF); }
  75             }
  76             self.src.read_buf(&mut tag)?;
  77             let size = self.src.read_u32le()? as usize;
  78             if mktag!(tag) == mktag!(b"JUNK") {
  79                 self.movi_size -= size + 8;
  80                 self.src.read_skip(size)?;
  81                 if self.movi_size == 0 { return Err(EOF); }
  82                 continue;
  83             }
  84             if mktag!(tag) == mktag!(b"LIST") {
  85                 self.movi_size -= 12;
  86                 self.src.read_skip(4)?;
  87                 if self.movi_size == 0 { return Err(EOF); }
  88                 continue;
  89             }
  90             if tag[0] == b'i' && tag[1] == b'x' {
  91                 return Err(EOF);
  92             }
  93             if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' {
  94                 return Err(InvalidData);
  95             }
  96             let stream_no = (tag[0] - b'0') * 10 + (tag[1] - b'0');
  97             let str = strmgr.get_stream(stream_no as usize);
  98             if str.is_none() { return Err(InvalidData); }
  99             let stream = str.unwrap();
 100             if size == 0 {
 101                 self.movi_size -= 8;
 102                 if self.movi_size == 0 { return Err(EOF); }
 103                 continue;
 104             }
 105             let (tb_num, tb_den) = stream.get_timebase();
 106             let ts = NATimeInfo::new(Some(self.cur_frame[stream_no as usize]), None, None, tb_num, tb_den);
 107             let pkt = self.src.read_packet(stream, ts, false, size)?;
 108             self.cur_frame[stream_no as usize] += 1;
 109             self.movi_size -= size + 8;
 110
 111             return Ok(pkt);
 112         }
 113     }
 114
 115     #[allow(unused_variables)]
 116     fn seek(&mut self, time: u64) -> DemuxerResult<()> {
 117         Err(NotImplemented)
 118     }
 119 }
 120
 121 impl<'a> AVIDemuxer<'a> {
 122     fn new(io: &'a mut ByteReader<'a>) -> Self {
 123         AVIDemuxer {
 124             cur_frame: Vec::new(),
 125             num_streams: 0,
 126             src: io,
 127             size: 0,
 128             movi_size: 0,
 129             sstate: StreamState::new(),
 130             tb_num: 0,
 131             tb_den: 0,
 132         }
 133     }
 134
 135     fn parse_chunk(&mut self, strmgr: &mut StreamManager, end_tag: RIFFTag, csize: usize, depth: u16) -> DemuxerResult<(usize, bool)> {
 136         if csize < 8 { return Err(InvalidData); }
 137         if depth > 42 { return Err(InvalidData); }
 138
 139         let tag  = self.src.read_u32be()?;
 140         let size = self.src.read_u32le()? as usize;
 141         if size > csize { return Err(InvalidData); }
 142         if RIFFTag::Chunk(tag) == end_tag {
 143             return Ok((size, true));
 144         }
 145         let is_list = is_list_tag(tag);
 146         let ltag = if is_list { self.src.read_u32be()? } else { 0 };
 147         if RIFFTag::List(tag, ltag) == end_tag {
 148             return Ok((size, true));
 149         }
 150
 151         for chunk in CHUNKS.iter() {
 152             if RIFFTag::Chunk(tag) == chunk.tag {
 153                 let psize = (chunk.parse)(self, strmgr, size)?;
 154                 if psize != size { return Err(InvalidData); }
 155                 if (psize & 1) == 1 { self.src.read_skip(1)?; }
 156                 return Ok((size + 8, false));
 157             }
 158             if RIFFTag::List(tag, ltag) == chunk.tag {
 159                 let mut rest_size = size - 4;
 160                 let psize = (chunk.parse)(self, strmgr, rest_size)?;
 161                 if psize > rest_size { return Err(InvalidData); }
 162                 rest_size -= psize;
 163                 while rest_size > 0 {
 164                     let (psize, _) = self.parse_chunk(strmgr, end_tag, rest_size, depth+1)?;
 165                     if psize > rest_size { return Err(InvalidData); }
 166                     rest_size -= psize;
 167                     if ((psize & 1) == 1) && (rest_size > 0) {
 168                         rest_size -= 1;
 169                     }
 170                 }
 171
 172                 return Ok((size + 8, false));
 173             }
 174         }
 175         if !is_list {
 176             self.src.read_skip(size)?;
 177         } else {
 178             if size < 4 { return Err(InvalidData); }
 179             self.src.read_skip(size - 4)?;
 180         }
 181         if (size & 1) == 1 { self.src.read_skip(1)?; }
 182         Ok((size + 8, false))
 183     }
 184
 185     fn read_header(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
 186         let riff_tag = self.src.read_u32be()?;
 187         let size     = self.src.read_u32le()? as usize;
 188         let avi_tag  = self.src.read_u32be()?;
 189         let mut matches = false;
 190         for rt in RIFF_TAGS.iter() {
 191             if rt[0] == riff_tag && rt[1] == avi_tag {
 192                 matches = true;
 193                 break;
 194             }
 195         }
 196         if !matches {
 197             return Err(InvalidData);
 198         }
 199         self.size = size;
 200         let mut rest_size = size;
 201         loop {
 202             let (csz, end) = self.parse_chunk(strmgr, RIFFTag::List(mktag!(b"LIST"), mktag!(b"movi")), rest_size,0)?;
 203             if end { self.movi_size = csz - 4; break; }
 204             rest_size -= csz;
 205         }
 206         if !self.sstate.valid_state() || self.sstate.strm_no != self.num_streams {
 207             return Err(InvalidData);
 208         }
 209         Ok(())
 210     }
 211
 212     fn read_extradata(&mut self, size: usize) -> DemuxerResult<Option<Vec<u8>>> {
 213         if size == 0 { return Ok(None); }
 214         let mut edvec: Vec<u8> = vec![0; size];
 215         self.src.read_buf(&mut edvec)?;
 216         Ok(Some(edvec))
 217     }
 218 }
 219
 220 const RIFF_TAGS: &[[u32; 2]] = &[
 221     [ mktag!(b"RIFF"), mktag!(b"AVI ") ],
 222     [ mktag!(b"RIFF"), mktag!(b"AVIX") ],
 223     [ mktag!(b"ON2 "), mktag!(b"ON2f") ],
 224 ];
 225
 226 const CHUNKS: [RIFFParser; 7] = [
 227     RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"hdrl")), parse: parse_hdrl },
 228     RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"strl")), parse: parse_strl },
 229     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"avih")), parse: parse_avih },
 230     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"ON2h")), parse: parse_avih },
 231     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strf")), parse: parse_strf },
 232     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strh")), parse: parse_strh },
 233     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"JUNK")), parse: parse_junk },
 234 ];
 235
 236 fn is_list_tag(tag: u32) -> bool {
 237     for chunk in CHUNKS.iter() {
 238         if let RIFFTag::List(ltag, _) = chunk.tag {
 239             if tag == ltag {
 240                 return true;
 241             }
 242         }
 243     }
 244     false
 245 }
 246
 247 #[allow(unused_variables)]
 248 fn parse_hdrl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 249     Ok(0)
 250 }
 251
 252 #[allow(unused_variables)]
 253 fn parse_strl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 254     Ok(0)
 255 }
 256
 257 #[allow(unused_variables)]
 258 fn parse_strh(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 259     if size < 0x38 { return Err(InvalidData); }
 260     let tag = dmx.src.read_u32be()?; //stream type
 261     let fcc = dmx.src.read_u32be()?; //handler(fourcc)
 262     dmx.src.read_u32le()?; //flags
 263     dmx.src.read_skip(2)?; //priority
 264     dmx.src.read_skip(2)?; //language
 265     dmx.src.read_skip(4)?; //initial frames
 266     dmx.tb_num = dmx.src.read_u32le()?; //scale
 267     dmx.tb_den = dmx.src.read_u32le()?; //rate
 268     dmx.src.read_skip(4)?; //start
 269     dmx.src.read_skip(4)?; //length
 270     dmx.src.read_skip(4)?; //buf size
 271     dmx.src.read_skip(4)?; //quality
 272     dmx.src.read_skip(4)?; //sample size
 273     let a = dmx.src.read_u16le()?;
 274     let b = dmx.src.read_u16le()?;
 275     let c = dmx.src.read_u16le()?;
 276     let d = dmx.src.read_u16le()?;
 277
 278     dmx.src.read_skip(size - 0x38)?;
 279
 280     if !dmx.sstate.valid_state() || dmx.sstate.strm_no >= dmx.num_streams {
 281         return Err(InvalidData);
 282     }
 283     if tag == mktag!(b"vids") {
 284         dmx.sstate.strm_type = Some(StreamType::Video);
 285     } else if tag == mktag!(b"auds") {
 286         dmx.sstate.strm_type = Some(StreamType::Audio);
 287     } else {
 288         dmx.sstate.strm_type = Some(StreamType::Data);
 289     }
 290     dmx.sstate.got_strf = false;
 291
 292     Ok(size)
 293 }
 294
 295 fn parse_strf(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 296     if dmx.sstate.strm_type.is_none() { return Err(InvalidData); }
 297     match dmx.sstate.strm_type.unwrap() {
 298         StreamType::Video    => parse_strf_vids(dmx, strmgr, size),
 299         StreamType::Audio    => parse_strf_auds(dmx, strmgr, size),
 300         _                    => parse_strf_xxxx(dmx, strmgr, size),
 301     }
 302 }
 303
 304 #[allow(unused_variables)]
 305 fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 306     if size < 40 { return Err(InvalidData); }
 307     let bi_size         = dmx.src.read_u32le()?;
 308     if (bi_size as usize) > size { return Err(InvalidData); }
 309     let width           = dmx.src.read_u32le()?;
 310     let height          = dmx.src.read_u32le()? as i32;
 311     let planes          = dmx.src.read_u16le()?;
 312     let bitcount        = dmx.src.read_u16le()?;
 313     let mut compression: [u8; 4] = [0; 4];
 314                           dmx.src.read_buf(&mut compression)?;
 315     let img_size        = dmx.src.read_u32le()?;
 316     let xdpi            = dmx.src.read_u32le()?;
 317     let ydpi            = dmx.src.read_u32le()?;
 318     let colors          = dmx.src.read_u32le()?;
 319     let imp_colors      = dmx.src.read_u32le()?;
 320
 321     let flip = height < 0;
 322     let format = if bitcount > 8 { RGB24_FORMAT } else { PAL8_FORMAT };
 323     let vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, PAL8_FORMAT);
 324     let vci = NACodecTypeInfo::Video(vhdr);
 325     let edata = dmx.read_extradata(size - 40)?;
 326     let cname = match register::find_codec_from_avi_fourcc(&compression) {
 327                     None => "unknown",
 328                     Some(name) => name,
 329                 };
 330     let vinfo = NACodecInfo::new(cname, vci, edata);
 331     let res = strmgr.add_stream(NAStream::new(StreamType::Video, u32::from(dmx.sstate.strm_no), vinfo, dmx.tb_num, dmx.tb_den));
 332     if res.is_none() { return Err(MemoryError); }
 333     dmx.sstate.reset();
 334     Ok(size)
 335 }
 336
 337 #[allow(unused_variables)]
 338 fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 339     if size < 16 { return Err(InvalidData); }
 340     let w_format_tag        = dmx.src.read_u16le()?;
 341     let channels            = dmx.src.read_u16le()?;
 342     let samplespersec       = dmx.src.read_u32le()?;
 343     let avgbytespersec      = dmx.src.read_u32le()?;
 344     let block_align         = dmx.src.read_u16le()?;
 345     let bits_per_sample     = dmx.src.read_u16le()? * 8;
 346
 347     let soniton = NASoniton::new(bits_per_sample as u8, SONITON_FLAG_SIGNED);
 348     let ahdr = NAAudioInfo::new(samplespersec, channels as u8, soniton, block_align as usize);
 349     let edata = dmx.read_extradata(size - 16)?;
 350     let cname = match register::find_codec_from_wav_twocc(w_format_tag) {
 351                     None => "unknown",
 352                     Some(name) => name,
 353                 };
 354     let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata);
 355     let res = strmgr.add_stream(NAStream::new(StreamType::Audio, u32::from(dmx.sstate.strm_no), ainfo, dmx.tb_num, dmx.tb_den));
 356     if res.is_none() { return Err(MemoryError); }
 357     dmx.sstate.reset();
 358     Ok(size)
 359 }
 360
 361 fn parse_strf_xxxx(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 362     let edata = dmx.read_extradata(size)?;
 363     let info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata);
 364     let res = strmgr.add_stream(NAStream::new(StreamType::Data, u32::from(dmx.sstate.strm_no), info, dmx.tb_num, dmx.tb_den));
 365     if res.is_none() { return Err(MemoryError); }
 366     dmx.sstate.reset();
 367     Ok(size)
 368 }
 369
 370 #[allow(unused_variables)]
 371 fn parse_avih(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 372     if size < 0x38 { return Err(InvalidData); }
 373     let timebase = dmx.src.read_u32le()?; //microsec per frame
 374     dmx.src.read_skip(4)?; //max frame size
 375     dmx.src.read_skip(4)?; //padding
 376     dmx.src.read_u32le()?; //flags
 377     let frames = dmx.src.read_u32le()?; //frames
 378     dmx.src.read_skip(4)?; //initial frames
 379     let streams = dmx.src.read_u32le()?; //streams
 380     if streams > 100 { return Err(InvalidData); }
 381     dmx.num_streams = streams as u8;
 382
 383     dmx.src.read_skip(4)?; //buf size
 384     let width = dmx.src.read_u32le()?; //width
 385     let height = dmx.src.read_u32le()? as i32; //height
 386     dmx.src.read_skip(16)?; //reserved
 387
 388     dmx.cur_frame.resize(streams as usize, 0);
 389     dmx.src.read_skip(size - 0x38)?;
 390     Ok(size)
 391 }
 392
 393 #[allow(unused_variables)]
 394 fn parse_junk(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 395     dmx.src.read_skip(size)?;
 396     Ok(size)
 397 }
 398
 399 pub struct AVIDemuxerCreator { }
 400
 401 impl DemuxerCreator for AVIDemuxerCreator {
 402     fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
 403         Box::new(AVIDemuxer::new(br))
 404     }
 405     fn get_name(&self) -> &'static str { "avi" }
 406 }
 407
 408 #[cfg(test)]
 409 mod test {
 410     use super::*;
 411     use std::fs::File;
 412
 413     #[test]
 414     fn test_avi_demux() {
 415         let mut file = File::open("assets/Indeo/laser05.avi").unwrap();
 416         let mut fr = FileReader::new_read(&mut file);
 417         let mut br = ByteReader::new(&mut fr);
 418         let mut dmx = AVIDemuxer::new(&mut br);
 419         let mut sm = StreamManager::new();
 420         dmx.open(&mut sm).unwrap();
 421
 422         loop {
 423             let pktres = dmx.get_frame(&mut sm);
 424             if let Err(e) = pktres {
 425                 if e == DemuxerError::EOF { break; }
 426                 panic!("error");
 427             }
 428             let pkt = pktres.unwrap();
 429             println!("Got {}", pkt);
 430         }
 431     }
 432 }