nihav-commonfmt/src/demuxers/avi.rs

   1 use nihav_core::demuxers::*;
   2 use nihav_registry::register;
   3 use nihav_core::demuxers::DemuxerError::*;
   4 use std::str::FromStr;
   5
   6 macro_rules! mktag {
   7     ($a:expr, $b:expr, $c:expr, $d:expr) => ({
   8         (($a as u32) << 24) | (($b as u32) << 16) | (($c as u32) << 8) | ($d as u32)
   9     });
  10     ($arr:expr) => ({
  11         (($arr[0] as u32) << 24) | (($arr[1] as u32) << 16) | (($arr[2] as u32) << 8) | ($arr[3] as u32)
  12     });
  13 }
  14
  15 struct StreamState {
  16     strm_no:    u8,
  17     got_strf:   bool,
  18     strm_type:  Option<StreamType>,
  19 }
  20
  21 impl StreamState {
  22     fn new() -> Self {
  23         StreamState { strm_no: 0, got_strf: true, strm_type: None }
  24     }
  25     fn reset(&mut self) {
  26         self.strm_type = None;
  27         self.got_strf  = true;
  28         self.strm_no  += 1;
  29     }
  30     fn valid_state(&self) -> bool {
  31         match self.strm_type {
  32             None => self.got_strf,
  33             _    => false,
  34         }
  35     }
  36 }
  37
  38 struct PalInfo {
  39     pal:        Arc<[u8; 1024]>,
  40     changed:    bool,
  41     stream_no:  usize,
  42 }
  43
  44 #[derive(Clone,Copy,Default)]
  45 struct RIFFSegment {
  46     pos:        u64,
  47     size:       usize,
  48     movi_pos:   u64,
  49     movi_size:  usize,
  50 }
  51
  52 impl RIFFSegment {
  53     fn contains(&self, pos: u64) -> bool {
  54         pos >= self.movi_pos && pos < self.movi_pos + (self.movi_size as u64)
  55     }
  56     fn get_end(&self) -> u64 {
  57         self.pos + (self.size as u64)
  58     }
  59 }
  60
  61 #[allow(dead_code)]
  62 struct AVIDemuxer<'a> {
  63     src:            &'a mut ByteReader<'a>,
  64     cur_frame:      Vec<u64>,
  65     num_streams:    u8,
  66     size:           usize,
  67     movi_size:      usize,
  68     movi_pos:       u64,
  69     movi_orig:      usize,
  70     sstate:         StreamState,
  71     tb_num:         u32,
  72     tb_den:         u32,
  73     strm_duration:  u32,
  74     key_offs:       Vec<u64>,
  75     pal:            Vec<PalInfo>,
  76     odml:           bool,
  77     odml_idx:       Vec<u64>,
  78     odml_riff:      Vec<RIFFSegment>,
  79 }
  80
  81 #[derive(Debug,Clone,Copy,PartialEq)]
  82 enum RIFFTag {
  83     Chunk(u32),
  84     List(u32,u32),
  85 }
  86
  87 struct RIFFParser {
  88     tag:   RIFFTag,
  89     parse: fn(&mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize>,
  90 }
  91
  92 impl<'a> DemuxCore<'a> for AVIDemuxer<'a> {
  93     fn open(&mut self, strmgr: &mut StreamManager, seek_index: &mut SeekIndex) -> DemuxerResult<()> {
  94         self.read_header(strmgr, seek_index)?;
  95         Ok(())
  96     }
  97
  98     fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
  99         if self.movi_size == 0 {
 100             if !self.odml {
 101                 return Err(EOF);
 102             }
 103             self.try_next_odml_chunk()?;
 104         }
 105         let mut tag: [u8; 4] = [0; 4];
 106         loop {
 107             if (self.src.tell() & 1) == 1 {
 108                 self.src.read_skip(1)?;
 109                 self.movi_size -= 1;
 110                 if self.movi_size == 0 {
 111                     if !self.odml {
 112                         return Err(EOF);
 113                     }
 114                     self.try_next_odml_chunk()?;
 115                 }
 116             }
 117             let is_keyframe = self.key_offs.binary_search(&self.src.tell()).is_ok();
 118             self.src.read_buf(&mut tag)?;
 119             let size = self.src.read_u32le()? as usize;
 120             if mktag!(tag) == mktag!(b"JUNK") {
 121                 self.movi_size -= size + 8;
 122                 self.src.read_skip(size)?;
 123                 if self.movi_size == 0 {
 124                     if !self.odml {
 125                         return Err(EOF);
 126                     }
 127                     self.try_next_odml_chunk()?;
 128                 }
 129                 continue;
 130             }
 131             if mktag!(tag) == mktag!(b"LIST") {
 132                 self.movi_size -= 12;
 133                 self.src.read_skip(4)?;
 134                 if self.movi_size == 0 {
 135                     if !self.odml {
 136                         return Err(EOF);
 137                     }
 138                     self.try_next_odml_chunk()?;
 139                 }
 140                 continue;
 141             }
 142             if (tag[0] == b'i' && tag[1] == b'x') || (&tag == b"idx1") {
 143                 let idx_pos = self.src.tell() - 8;
 144                 if !self.odml {
 145                     return Err(EOF);
 146                 }
 147                 self.src.read_skip(size)?;
 148                 if idx_pos > self.movi_pos {
 149                     self.try_next_odml_chunk()?;
 150                 } else {
 151                     self.movi_pos = self.src.tell();
 152                 }
 153                 continue;
 154             }
 155             if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' {
 156                 return Err(InvalidData);
 157             }
 158             let stream_no = (tag[0] - b'0') * 10 + (tag[1] - b'0');
 159             if tag[2] == b'p' && tag[3] == b'c' {
 160                 self.parse_palette_change(stream_no as usize, size)?;
 161                 self.movi_size -= size;
 162                 if self.movi_size == 0 {
 163                     if !self.odml {
 164                         return Err(EOF);
 165                     }
 166                     self.try_next_odml_chunk()?;
 167                 }
 168                 continue;
 169             }
 170             let str = strmgr.get_stream(stream_no as usize);
 171             if str.is_none() { return Err(InvalidData); }
 172             let stream = str.unwrap();
 173             if size == 0 {
 174                 self.movi_size -= 8;
 175                 if self.movi_size == 0 {
 176                     if !self.odml {
 177                         return Err(EOF);
 178                     }
 179                     self.try_next_odml_chunk()?;
 180                 }
 181                 continue;
 182             }
 183             let (tb_num, tb_den) = stream.get_timebase();
 184             let mut ts = NATimeInfo::new(Some(self.cur_frame[stream_no as usize]), None, None, tb_num, tb_den);
 185             if stream.get_media_type() == StreamType::Audio && tb_num == 1 && stream.get_info().get_name() == "pcm" {
 186                 ts.pts = None;
 187             }
 188             let mut pkt = self.src.read_packet(stream, ts, is_keyframe, size)?;
 189             for pe in self.pal.iter_mut() {
 190                 if pe.stream_no == (stream_no as usize) {
 191                     pkt.add_side_data(NASideData::Palette(pe.changed, pe.pal.clone()));
 192                     pe.changed = false;
 193                     break;
 194                 }
 195             }
 196             self.cur_frame[stream_no as usize] += 1;
 197             self.movi_size -= size + 8;
 198
 199             return Ok(pkt);
 200         }
 201     }
 202
 203     fn seek(&mut self, time: NATimePoint, seek_index: &SeekIndex) -> DemuxerResult<()> {
 204         let ret = seek_index.find_pos(time);
 205         if ret.is_none() {
 206             return Err(DemuxerError::SeekError);
 207         }
 208         let seek_info = ret.unwrap();
 209
 210         if self.odml && ((seek_info.pos < self.movi_pos) || (seek_info.pos > self.movi_pos + (self.movi_orig as u64))) {
 211             let mut found = false;
 212             for riff_seg in self.odml_riff.iter() {
 213                 if riff_seg.contains(seek_info.pos) {
 214                     found = true;
 215                     self.movi_pos = riff_seg.movi_pos;
 216                     self.movi_orig = riff_seg.movi_size;
 217                     self.movi_size = riff_seg.movi_size;
 218                     break;
 219                 }
 220             }
 221             if !found {
 222                 let riff_seg = self.odml_riff.last().unwrap();
 223                 self.src.seek(SeekFrom::Start(riff_seg.get_end()))?;
 224                 loop {
 225                     let ret = self.try_next_odml_chunk();
 226                     if ret.is_err() {
 227                         return Err(DemuxerError::SeekError);
 228                     }
 229                     let riff_seg = self.odml_riff.last().unwrap();
 230                     if riff_seg.contains(seek_info.pos) {
 231                         self.movi_pos = riff_seg.movi_pos;
 232                         self.movi_orig = riff_seg.movi_size;
 233                         self.movi_size = riff_seg.movi_size;
 234                         break;
 235                     }
 236                     self.src.seek(SeekFrom::Start(riff_seg.get_end()))?;
 237                 }
 238             }
 239         }
 240         if seek_info.pos < self.movi_pos { return Err(DemuxerError::SeekError); }
 241         let skip_size = (seek_info.pos - self.movi_pos) as usize;
 242         if skip_size > self.movi_size { return Err(DemuxerError::SeekError); }
 243         self.movi_size = self.movi_orig - skip_size;
 244
 245         self.cur_frame[seek_info.str_id as usize] = seek_info.pts;
 246         self.src.seek(SeekFrom::Start(seek_info.pos))?;
 247
 248         Ok(())
 249     }
 250     fn get_duration(&self) -> u64 { 0 }
 251 }
 252
 253 impl<'a> NAOptionHandler for AVIDemuxer<'a> {
 254     fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
 255     fn set_options(&mut self, _options: &[NAOption]) { }
 256     fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
 257 }
 258
 259 impl<'a> AVIDemuxer<'a> {
 260     fn new(io: &'a mut ByteReader<'a>) -> Self {
 261         AVIDemuxer {
 262             cur_frame: Vec::new(),
 263             num_streams: 0,
 264             src: io,
 265             size: 0,
 266             movi_size: 0,
 267             movi_pos:  0,
 268             movi_orig: 0,
 269             sstate: StreamState::new(),
 270             tb_num: 0,
 271             tb_den: 0,
 272             strm_duration: 0,
 273             key_offs: Vec::new(),
 274             pal: Vec::new(),
 275             odml: false,
 276             odml_idx: Vec::new(),
 277             odml_riff: Vec::with_capacity(1),
 278         }
 279     }
 280
 281     fn parse_chunk(&mut self, strmgr: &mut StreamManager, end_tag: RIFFTag, csize: usize, depth: u16) -> DemuxerResult<(usize, bool)> {
 282         if csize < 8 { return Err(InvalidData); }
 283         if depth > 42 { return Err(InvalidData); }
 284
 285         let tag  = self.src.read_u32be()?;
 286         let size = self.src.read_u32le()? as usize;
 287         if size > csize { return Err(InvalidData); }
 288         if RIFFTag::Chunk(tag) == end_tag {
 289             return Ok((size, true));
 290         }
 291         let is_list = is_list_tag(tag);
 292         let ltag = if is_list { self.src.read_u32be()? } else { 0 };
 293         if RIFFTag::List(tag, ltag) == end_tag {
 294             return Ok((size, true));
 295         }
 296
 297         for chunk in CHUNKS.iter() {
 298             if RIFFTag::Chunk(tag) == chunk.tag {
 299                 let psize = (chunk.parse)(self, strmgr, size)?;
 300                 if psize != size { return Err(InvalidData); }
 301                 if (psize & 1) == 1 { self.src.read_skip(1)?; }
 302                 return Ok((size + 8, false));
 303             }
 304             if RIFFTag::List(tag, ltag) == chunk.tag {
 305                 let mut rest_size = size - 4;
 306                 let psize = (chunk.parse)(self, strmgr, rest_size)?;
 307                 if psize > rest_size { return Err(InvalidData); }
 308                 rest_size -= psize;
 309                 while rest_size > 0 {
 310                     let (psize, _) = self.parse_chunk(strmgr, end_tag, rest_size, depth+1)?;
 311                     if psize > rest_size { return Err(InvalidData); }
 312                     rest_size -= psize;
 313                     if ((psize & 1) == 1) && (rest_size > 0) {
 314                         rest_size -= 1;
 315                     }
 316                 }
 317
 318                 return Ok((size + 8, false));
 319             }
 320         }
 321         if !is_list {
 322             self.src.read_skip(size)?;
 323         } else {
 324             if size < 4 { return Err(InvalidData); }
 325             self.src.read_skip(size - 4)?;
 326         }
 327         if (size & 1) == 1 { self.src.read_skip(1)?; }
 328         Ok((size + 8, false))
 329     }
 330
 331     fn read_header(&mut self, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex) -> DemuxerResult<()> {
 332         let riff_tag = self.src.read_u32be()?;
 333         let size     = self.src.read_u32le()? as usize;
 334         self.odml_riff.push(RIFFSegment { pos: self.src.tell() - 8, size: size + 8, movi_pos: 0, movi_size: 0});
 335         let avi_tag  = self.src.read_u32be()?;
 336         let mut matches = false;
 337         for rt in RIFF_TAGS.iter() {
 338             if rt[0] == riff_tag && rt[1] == avi_tag {
 339                 matches = true;
 340                 break;
 341             }
 342         }
 343         if !matches {
 344             return Err(InvalidData);
 345         }
 346         self.size = size;
 347         let mut rest_size = size;
 348         loop {
 349             let (csz, end) = self.parse_chunk(strmgr, RIFFTag::List(mktag!(b"LIST"), mktag!(b"movi")), rest_size,0)?;
 350             if end {
 351                 self.movi_size = csz - 4;
 352                 self.movi_orig = self.movi_size;
 353                 self.movi_pos = self.src.tell();
 354
 355                 self.odml_riff[0].movi_pos  = self.movi_pos;
 356                 self.odml_riff[0].movi_size = self.movi_size;
 357                 break;
 358             }
 359             rest_size -= csz;
 360         }
 361         if !seek_idx.skip_index {
 362             if !self.odml {
 363                 self.src.read_skip(self.movi_size)?;
 364                 while rest_size > 0 {
 365                     let ret = self.parse_chunk(strmgr, RIFFTag::Chunk(mktag!(b"idx1")), rest_size,0);
 366                     if ret.is_err() { break; }
 367                     let (csz, end) = ret.unwrap();
 368                     if end {
 369                         let _res = parse_idx1(self.src, strmgr, seek_idx, csz, self.movi_pos, &mut self.key_offs);
 370                         break;
 371                     }
 372                     rest_size -= csz;
 373                 }
 374             } else {
 375                 let mut start = 0;
 376                 let mut last_strm_no = 255;
 377                 for &offset in self.odml_idx.iter() {
 378                     if self.src.seek(SeekFrom::Start(offset)).is_err() {
 379                         break;
 380                     }
 381                     let ret = self.src.read_tag();
 382                     if ret.is_err() { break; }
 383                     let tag = ret.unwrap();
 384                     let ret = self.src.read_u32le();
 385                     if ret.is_err() { break; }
 386                     let size = ret.unwrap() as usize;
 387                     if &tag[..2] != b"ix" || tag[2] < b'0' || tag[2] > b'9' || tag[3] < b'0' || tag[3] > b'9'{
 388                         break;
 389                     }
 390                     let stream_no = ((tag[2] - b'0') * 10 + (tag[3] - b'0')) as usize;
 391
 392                     if last_strm_no != stream_no {
 393                         start = 0;
 394                         last_strm_no = stream_no;
 395                     }
 396                     let ret = parse_odml_ix(self.src, strmgr, seek_idx, stream_no, size, start);
 397                     if let Ok(new_start) = ret {
 398                         start = new_start;
 399                     } else {
 400                         break;
 401                     }
 402                 }
 403             }
 404         }
 405         if self.movi_pos != 0 {
 406             self.src.seek(SeekFrom::Start(self.movi_pos))?;
 407         } else {
 408             return Err(InvalidData);
 409         }
 410         if !self.sstate.valid_state() || self.sstate.strm_no != self.num_streams {
 411             return Err(InvalidData);
 412         }
 413         Ok(())
 414     }
 415
 416     fn read_extradata(&mut self, size: usize) -> DemuxerResult<Option<Vec<u8>>> {
 417         if size == 0 { return Ok(None); }
 418         let mut edvec: Vec<u8> = vec![0; size];
 419         self.src.read_buf(&mut edvec)?;
 420         Ok(Some(edvec))
 421     }
 422
 423     fn parse_palette_change(&mut self, stream_no: usize, size: usize) -> DemuxerResult<()> {
 424         for pe in self.pal.iter_mut() {
 425             if pe.stream_no == stream_no {
 426                 let start_clr           = self.src.read_byte()? as usize;
 427                 let len                 = self.src.read_byte()? as usize;
 428                 let _flags              = self.src.read_u16le()?;
 429                 validate!(start_clr + len <= 256);
 430                 validate!(len * 4 + 4 == size);
 431                 let mut newpal = *pe.pal;
 432                 for i in start_clr..(start_clr + len) {
 433                     newpal[i * 4]       = self.src.read_byte()?;
 434                     newpal[i * 4 + 1]   = self.src.read_byte()?;
 435                     newpal[i * 4 + 2]   = self.src.read_byte()?;
 436                     newpal[i * 4 + 3]   = 0;
 437                                           self.src.read_byte()?; // flags
 438                 }
 439                 pe.pal = Arc::new(newpal);
 440                 pe.changed = true;
 441                 return Ok(());
 442             }
 443         }
 444         self.src.read_skip(size)?;
 445         Ok(())
 446     }
 447     fn try_next_odml_chunk(&mut self) -> DemuxerResult<()> {
 448         let last_seg = self.odml_riff.last().unwrap();
 449         if self.src.tell() < last_seg.get_end() {
 450             for riff_seg in self.odml_riff.iter() {
 451                 if riff_seg.pos >= self.src.tell() {
 452                     self.src.seek(SeekFrom::Start(riff_seg.movi_pos))?;
 453                     self.movi_pos = riff_seg.movi_pos;
 454                     self.movi_size = riff_seg.movi_size;
 455                     return Ok(());
 456                 }
 457             }
 458         }
 459         self.src.seek(SeekFrom::Start(last_seg.get_end()))?;
 460
 461         let riff_pos = self.src.tell();
 462         let ret = self.src.read_tag();
 463         if let Ok([b'R', b'I', b'F', b'F']) = ret {
 464         } else {
 465             return Err(DemuxerError::EOF);
 466         }
 467         let riff_size = self.src.read_u32le()? as usize;
 468         let tag = self.src.read_tag()?;
 469         validate!(&tag == b"AVIX");
 470         let tag = self.src.read_tag()?;
 471         validate!(&tag == b"LIST");
 472         let list_size = self.src.read_u32le()? as usize;
 473         validate!(list_size >= 4);
 474         let tag = self.src.read_tag()?;
 475         validate!(&tag == b"movi");
 476         self.odml_riff.push(RIFFSegment{ pos: riff_pos, size: riff_size + 8, movi_pos: riff_pos + 24, movi_size: list_size - 4});
 477         self.movi_pos = riff_pos + 24;
 478         self.movi_size = list_size - 4;
 479         self.movi_orig = self.movi_size;
 480
 481         Ok(())
 482     }
 483 }
 484
 485 const RIFF_TAGS: &[[u32; 2]] = &[
 486     [ mktag!(b"RIFF"), mktag!(b"AVI ") ],
 487     [ mktag!(b"RIFF"), mktag!(b"AVIX") ],
 488     [ mktag!(b"ON2 "), mktag!(b"ON2f") ],
 489 ];
 490
 491 const CHUNKS: &[RIFFParser] = &[
 492     RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"hdrl")), parse: parse_hdrl },
 493     RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"strl")), parse: parse_strl },
 494     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"avih")), parse: parse_avih },
 495     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"ON2h")), parse: parse_avih },
 496     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strf")), parse: parse_strf },
 497     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strh")), parse: parse_strh },
 498     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"indx")), parse: parse_indx },
 499     RIFFParser { tag: RIFFTag::Chunk(mktag!(b"JUNK")), parse: parse_junk },
 500     RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"odml")), parse: parse_odml },
 501 ];
 502
 503 fn is_list_tag(tag: u32) -> bool {
 504     for chunk in CHUNKS.iter() {
 505         if let RIFFTag::List(ltag, _) = chunk.tag {
 506             if tag == ltag {
 507                 return true;
 508             }
 509         }
 510     }
 511     false
 512 }
 513
 514 #[allow(unused_variables)]
 515 fn parse_hdrl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 516     Ok(0)
 517 }
 518
 519 #[allow(unused_variables)]
 520 fn parse_strl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 521     Ok(0)
 522 }
 523
 524 fn parse_odml(dmx: &mut AVIDemuxer, _strmgr: &mut StreamManager, _size: usize) -> DemuxerResult<usize> {
 525     dmx.odml = true;
 526     Ok(0)
 527 }
 528
 529 #[allow(unused_variables)]
 530 fn parse_strh(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 531     if size < 0x38 { return Err(InvalidData); }
 532     let tag = dmx.src.read_u32be()?; //stream type
 533     let fcc = dmx.src.read_u32be()?; //handler(fourcc)
 534     dmx.src.read_u32le()?; //flags
 535     dmx.src.read_skip(2)?; //priority
 536     dmx.src.read_skip(2)?; //language
 537     dmx.src.read_skip(4)?; //initial frames
 538     dmx.tb_num = dmx.src.read_u32le()?; //scale
 539     dmx.tb_den = dmx.src.read_u32le()?; //rate
 540     dmx.src.read_skip(4)?; //start
 541     dmx.strm_duration = dmx.src.read_u32le()?;
 542     dmx.src.read_skip(4)?; //buf size
 543     dmx.src.read_skip(4)?; //quality
 544     dmx.src.read_skip(4)?; //sample size
 545     let a = dmx.src.read_u16le()?;
 546     let b = dmx.src.read_u16le()?;
 547     let c = dmx.src.read_u16le()?;
 548     let d = dmx.src.read_u16le()?;
 549
 550     dmx.src.read_skip(size - 0x38)?;
 551
 552     if !dmx.sstate.valid_state() || dmx.sstate.strm_no >= dmx.num_streams {
 553         return Err(InvalidData);
 554     }
 555     if tag == mktag!(b"vids") {
 556         dmx.sstate.strm_type = Some(StreamType::Video);
 557     } else if tag == mktag!(b"auds") {
 558         dmx.sstate.strm_type = Some(StreamType::Audio);
 559     } else {
 560         dmx.sstate.strm_type = Some(StreamType::Data);
 561     }
 562     dmx.sstate.got_strf = false;
 563
 564     Ok(size)
 565 }
 566
 567 fn parse_strf(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 568     if dmx.sstate.strm_type.is_none() { return Err(InvalidData); }
 569     match dmx.sstate.strm_type.unwrap() {
 570         StreamType::Video    => parse_strf_vids(dmx, strmgr, size),
 571         StreamType::Audio    => parse_strf_auds(dmx, strmgr, size),
 572         _                    => parse_strf_xxxx(dmx, strmgr, size),
 573     }
 574 }
 575
 576 #[allow(unused_variables)]
 577 fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 578     if size < 40 { return Err(InvalidData); }
 579     let bi_size         = dmx.src.read_u32le()?;
 580     if (bi_size as usize) < 40 { return Err(InvalidData); }
 581     let width           = dmx.src.read_u32le()?;
 582     let height          = dmx.src.read_u32le()? as i32;
 583     let planes          = dmx.src.read_u16le()?;
 584     let bitcount        = dmx.src.read_u16le()?;
 585     let mut compression: [u8; 4] = [0; 4];
 586                           dmx.src.read_buf(&mut compression)?;
 587     let img_size        = dmx.src.read_u32le()?;
 588     let xdpi            = dmx.src.read_u32le()?;
 589     let ydpi            = dmx.src.read_u32le()?;
 590     let colors          = dmx.src.read_u32le()?;
 591     validate!(colors <= 256);
 592     let imp_colors      = dmx.src.read_u32le()?;
 593
 594     let flip = height < 0;
 595     let format = if bitcount > 8 { RGB24_FORMAT } else { PAL8_FORMAT };
 596     let mut vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, format);
 597     vhdr.bits = (planes as u8) * (bitcount as u8);
 598     let cname = if find_raw_rgb_fmt(&compression, planes, bitcount, flip, &mut vhdr) {
 599             "rawvideo-ms"
 600         } else if find_raw_yuv_fmt(&compression, &mut vhdr) {
 601             "rawvideo"
 602         } else {
 603             match register::find_codec_from_avi_fourcc(&compression) {
 604                 None => "unknown",
 605                 Some(name) => name,
 606             }
 607         };
 608     let vci = NACodecTypeInfo::Video(vhdr);
 609     let edata = dmx.read_extradata(size - 40)?;
 610     if colors > 0 {
 611         if let Some(ref buf) = edata {
 612             let mut pal = [0u8; 1024];
 613             for (dpal, spal) in pal.chunks_mut(4).take(colors as usize).zip(buf.chunks(4)) {
 614                 dpal[0] = spal[2];
 615                 dpal[1] = spal[1];
 616                 dpal[2] = spal[0];
 617                 dpal[3] = 0;
 618             }
 619             let pal = PalInfo { pal: Arc::new(pal), changed: true, stream_no: strmgr.get_num_streams() };
 620             dmx.pal.push(pal);
 621         }
 622     }
 623     let vinfo = NACodecInfo::new(cname, vci, edata);
 624     let res = strmgr.add_stream(NAStream::new(StreamType::Video, u32::from(dmx.sstate.strm_no), vinfo, dmx.tb_num, dmx.tb_den, u64::from(dmx.strm_duration)));
 625     if res.is_none() { return Err(MemoryError); }
 626     dmx.sstate.reset();
 627     Ok(size)
 628 }
 629
 630 fn find_raw_rgb_fmt(compr: &[u8; 4], planes: u16, bitcount: u16, flip: bool, vhdr: &mut NAVideoInfo) -> bool {
 631     match compr {
 632         &[0, 0, 0, 0] | b"DIB " => {
 633             if planes != 1 {
 634                 return false;
 635             }
 636             let fmt_name = match bitcount {
 637                      8 => "pal8",
 638                     16 => "bgr555",
 639                     24 => "bgr24",
 640                     32 => "bgra24",
 641                     _ => return false,
 642                 };
 643             if let Ok(fmt) = NAPixelFormaton::from_str(fmt_name) {
 644                 vhdr.format = fmt;
 645                 vhdr.flipped = !flip;
 646                 true
 647             } else {
 648                 false
 649             }
 650         },
 651         _ => false,
 652     }
 653 }
 654
 655 fn find_raw_yuv_fmt(compr: &[u8; 4], vhdr: &mut NAVideoInfo) -> bool {
 656     let (fmt_name, swapuv) = match compr {
 657             b"UYVY" | b"UYNY" | b"UYNV" | b"2vuy" => ("uyvy", false),
 658             b"I420" | b"IYUV" => ("yuv420p", false),
 659             b"YV12" => ("yuv420p", true),
 660             b"YVU9" => ("yuv410p", true),
 661             _ => return false,
 662         };
 663     if let Ok(fmt) = NAPixelFormaton::from_str(fmt_name) {
 664         vhdr.format = fmt;
 665         if swapuv {
 666             vhdr.format.comp_info.swap(1, 2);
 667         }
 668         true
 669     } else {
 670         false
 671     }
 672 }
 673
 674 #[allow(unused_variables)]
 675 fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 676     if size < 16 { return Err(InvalidData); }
 677     let w_format_tag        = dmx.src.read_u16le()?;
 678     let channels            = dmx.src.read_u16le()?;
 679     let samplespersec       = dmx.src.read_u32le()?;
 680     let avgbytespersec      = dmx.src.read_u32le()?;
 681     let block_align         = dmx.src.read_u16le()?;
 682     let bits_per_sample     = dmx.src.read_u16le()?;
 683
 684     let signed = bits_per_sample > 8;
 685     let soniton = NASoniton::new(bits_per_sample as u8, if signed { SONITON_FLAG_SIGNED } else { 0 });
 686     let ahdr = NAAudioInfo::new(samplespersec, channels as u8, soniton, block_align as usize);
 687     let edata = if size > 16 {
 688             let edata_size  = dmx.src.read_u16le()? as usize;
 689             validate!(edata_size + 18 <= size);
 690             dmx.read_extradata(size - 18)?
 691         } else {
 692             None
 693         };
 694     let cname = match register::find_codec_from_wav_twocc(w_format_tag) {
 695                     None => "unknown",
 696                     Some(name) => name,
 697                 };
 698     let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata);
 699     let res = strmgr.add_stream(NAStream::new(StreamType::Audio, u32::from(dmx.sstate.strm_no), ainfo, dmx.tb_num, dmx.tb_den, u64::from(dmx.strm_duration)));
 700     if res.is_none() { return Err(MemoryError); }
 701     dmx.sstate.reset();
 702     Ok(size)
 703 }
 704
 705 fn parse_strf_xxxx(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 706     let edata = dmx.read_extradata(size)?;
 707     let info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata);
 708     let res = strmgr.add_stream(NAStream::new(StreamType::Data, u32::from(dmx.sstate.strm_no), info, dmx.tb_num, dmx.tb_den, u64::from(dmx.strm_duration)));
 709     if res.is_none() { return Err(MemoryError); }
 710     dmx.sstate.reset();
 711     Ok(size)
 712 }
 713
 714 #[allow(unused_variables)]
 715 fn parse_avih(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 716     if size < 0x38 { return Err(InvalidData); }
 717     let timebase = dmx.src.read_u32le()?; //microsec per frame
 718     dmx.src.read_skip(4)?; //max frame size
 719     dmx.src.read_skip(4)?; //padding
 720     dmx.src.read_u32le()?; //flags
 721     let frames = dmx.src.read_u32le()?; //frames
 722     dmx.src.read_skip(4)?; //initial frames
 723     let streams = dmx.src.read_u32le()?; //streams
 724     if streams > 100 { return Err(InvalidData); }
 725     dmx.num_streams = streams as u8;
 726
 727     dmx.src.read_skip(4)?; //buf size
 728     let width = dmx.src.read_u32le()?; //width
 729     let height = dmx.src.read_u32le()? as i32; //height
 730     dmx.src.read_skip(16)?; //reserved
 731
 732     dmx.cur_frame.resize(streams as usize, 0);
 733     dmx.src.read_skip(size - 0x38)?;
 734     Ok(size)
 735 }
 736
 737 fn parse_indx(dmx: &mut AVIDemuxer, _strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 738     dmx.odml = true;
 739     validate!(size >= 24);
 740     let entry_size = dmx.src.read_u16le()? as usize;
 741     if entry_size != 4 {
 742         dmx.src.read_skip(size - 2)?;
 743         return Ok(size);
 744     }
 745     let sub_type = dmx.src.read_byte()?;
 746     let idx_type = dmx.src.read_byte()?;
 747     validate!(sub_type == 0 && idx_type == 0);
 748     let entries = dmx.src.read_u32le()? as usize;
 749     validate!(size >= 24 + entries * 4 * entry_size);
 750     dmx.src.read_tag()?; //chunk id
 751     dmx.src.read_skip(12)?; // reserved
 752     for _ in 0..entries {
 753         let offset = dmx.src.read_u64le()?;
 754         let _idx_len = dmx.src.read_u32le()?;
 755         let _nframes = dmx.src.read_u32le()?;
 756         dmx.odml_idx.push(offset);
 757     }
 758     dmx.src.read_skip(size - 24 - entries * 4 * entry_size)?;
 759     Ok(size)
 760 }
 761
 762 #[allow(unused_variables)]
 763 fn parse_junk(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
 764     dmx.src.read_skip(size)?;
 765     Ok(size)
 766 }
 767
 768 #[allow(clippy::verbose_bit_mask)]
 769 fn parse_idx1(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex, size: usize, movi_pos: u64, key_offs: &mut Vec<u64>) -> DemuxerResult<usize> {
 770     validate!((size & 15) == 0);
 771     let mut tag = [0u8; 4];
 772     let num_entries = size >> 4;
 773     let mut counter = [0u64; 100];
 774     let mut add_offset = 0;
 775     let mut set_offset = false;
 776     for _ in 0..num_entries {
 777                               src.read_buf(&mut tag)?;
 778         let flags           = src.read_u32le()?;
 779         let mut offset      = src.read_u32le()? as u64;
 780         let _length         = src.read_u32le()?;
 781
 782         if !set_offset && offset < movi_pos {
 783             add_offset = movi_pos - offset;
 784         }
 785         set_offset = true;
 786
 787         offset += add_offset;
 788
 789         if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' {
 790             continue;
 791         }
 792         let stream_no = ((tag[0] - b'0') * 10 + (tag[1] - b'0')) as usize;
 793
 794         if (flags & 0x10) != 0 {
 795             if let Some(str) = strmgr.get_stream(stream_no) {
 796                 if str.get_media_type() == StreamType::Video {
 797                     let (tb_num, tb_den) = str.get_timebase();
 798                     let pts = counter[stream_no];
 799                     let time = NATimeInfo::ts_to_time(pts, 1000, tb_num, tb_den);
 800                     validate!(offset >= movi_pos);
 801                     seek_idx.add_entry(stream_no as u32, SeekEntry { time, pts, pos: offset });
 802                 }
 803                 key_offs.push(offset);
 804             }
 805         }
 806         counter[stream_no] += 1;
 807     }
 808     key_offs.sort_unstable();
 809     Ok(size)
 810 }
 811
 812 fn parse_odml_ix(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex, stream_no: usize, size: usize, start: u64) -> DemuxerResult<u64> {
 813     validate!(size >= 24);
 814     let entry_size = src.read_u16le()? as usize;
 815     if entry_size != 2 {
 816         return Err(DemuxerError::NotImplemented);
 817     }
 818     let sub_type = src.read_byte()?;
 819     let idx_type = src.read_byte()?;
 820     validate!(sub_type == 0 && idx_type == 1);
 821     let entries = src.read_u32le()? as usize;
 822     validate!(size >= 24 + entries * 4 * entry_size);
 823     src.read_tag()?; //chunk id
 824     let base_offset = src.read_u64le()?;
 825     src.read_u32le()?; //reserved
 826     if let Some(stream) = strmgr.get_stream(stream_no) {
 827         if stream.get_media_type() == StreamType::Video {
 828             let (tb_num, tb_den) = stream.get_timebase();
 829
 830             for i in 0..entries {
 831                 let offset = src.read_u32le()?;
 832                 validate!(offset >= 8);
 833                 let _size  = src.read_u32le()?;
 834
 835                 let pts = start + (i as u64);
 836                 let time = NATimeInfo::ts_to_time(pts, 1000, tb_num, tb_den);
 837                 seek_idx.add_entry(stream_no as u32, SeekEntry { time, pts, pos: base_offset + u64::from(offset - 8) });
 838             }
 839
 840             Ok(start + (entries as u64))
 841         } else {
 842             Ok(0)
 843         }
 844     } else {
 845         Ok(0)
 846     }
 847 }
 848
 849 pub struct AVIDemuxerCreator { }
 850
 851 impl DemuxerCreator for AVIDemuxerCreator {
 852     fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
 853         Box::new(AVIDemuxer::new(br))
 854     }
 855     fn get_name(&self) -> &'static str { "avi" }
 856 }
 857
 858 #[cfg(test)]
 859 mod test {
 860     use super::*;
 861     use std::fs::File;
 862
 863     #[test]
 864     fn test_avi_demux() {
 865         //test sample: https://samples.mplayerhq.hu/V-codecs/RT21/320x240/laser05.avi
 866         let mut file = File::open("assets/Indeo/laser05.avi").unwrap();
 867         let mut fr = FileReader::new_read(&mut file);
 868         let mut br = ByteReader::new(&mut fr);
 869         let mut dmx = AVIDemuxer::new(&mut br);
 870         let mut sm = StreamManager::new();
 871         let mut si = SeekIndex::new();
 872         dmx.open(&mut sm, &mut si).unwrap();
 873
 874         loop {
 875             let pktres = dmx.get_frame(&mut sm);
 876             if let Err(e) = pktres {
 877                 if e == DemuxerError::EOF { break; }
 878                 panic!("error");
 879             }
 880             let pkt = pktres.unwrap();
 881             println!("Got {}", pkt);
 882         }
 883     }
 884 }