src/codecs/h263/rv20.rs

   1 use io::bitreader::*;
   2 use io::codebook::*;
   3 use formats;
   4 use super::super::*;
   5 use super::*;
   6 use super::code::H263BlockDSP;
   7 use super::decoder::*;
   8 use super::data::*;
   9
  10 #[allow(dead_code)]
  11 struct Tables {
  12     intra_mcbpc_cb: Codebook<u8>,
  13     inter_mcbpc_cb: Codebook<u8>,
  14     mbtype_b_cb:    Codebook<u8>,
  15     cbpy_cb:        Codebook<u8>,
  16     cbpc_b_cb:      Codebook<u8>,
  17     rl_cb:          Codebook<H263RLSym>,
  18     aic_rl_cb:      Codebook<H263RLSym>,
  19     mv_cb:          Codebook<u8>,
  20 }
  21
  22 #[derive(Clone,Copy)]
  23 struct RPRInfo {
  24     present:    bool,
  25     bits:       u8,
  26     widths:     [usize; 8],
  27     heights:    [usize; 8],
  28 }
  29
  30 struct RealVideo20Decoder {
  31     info:       Rc<NACodecInfo>,
  32     dec:        H263BaseDecoder,
  33     tables:     Tables,
  34     w:          usize,
  35     h:          usize,
  36     minor_ver:  u8,
  37     rpr:        RPRInfo,
  38     bdsp:       H263BlockDSP,
  39 }
  40
  41 struct RealVideo20BR<'a> {
  42     br:         BitReader<'a>,
  43     tables:     &'a Tables,
  44     num_slices: usize,
  45     slice_no:   usize,
  46     slice_off:  Vec<u32>,
  47     w:          usize,
  48     h:          usize,
  49     mb_w:       usize,
  50     mb_h:       usize,
  51     mb_pos_bits: u8,
  52     minor_ver:  u8,
  53     rpr:        RPRInfo,
  54 }
  55
  56 struct RV20SliceInfo {
  57     ftype:  Type,
  58     qscale: u8,
  59     mb_x:   usize,
  60     mb_y:   usize,
  61     mb_pos: usize,
  62     w:      usize,
  63     h:      usize,
  64 }
  65
  66 impl RV20SliceInfo {
  67     fn new(ftype: Type, qscale: u8, mb_x: usize, mb_y: usize, mb_pos: usize, w: usize, h: usize) -> Self {
  68         RV20SliceInfo { ftype: ftype, qscale: qscale, mb_x: mb_x, mb_y: mb_y, mb_pos: mb_pos, w: w, h: h }
  69     }
  70 }
  71
  72 impl<'a> RealVideo20BR<'a> {
  73     fn new(src: &'a [u8], tables: &'a Tables, width: usize, height: usize, minor_ver: u8, rpr: RPRInfo) -> Self {
  74         let nslices = (src[0] as usize) + 1;
  75         let mut slice_offs = Vec::with_capacity(nslices);
  76         {
  77             let offs = &src[1..][..nslices * 8];
  78             let mut br = BitReader::new(offs, offs.len(), BitReaderMode::BE);
  79             for _ in 0..nslices {
  80                 br.skip(32).unwrap();
  81                 let off = br.read(32).unwrap();
  82                 slice_offs.push(off);
  83             }
  84         }
  85         let soff = nslices * 8 + 1;
  86         let mb_w = (width  + 15) >> 4;
  87         let mb_h = (height + 15) >> 4;
  88         let max_pos = mb_w * mb_h - 1;
  89         let mut mbpb = 0;
  90         for i in 0..H263_MBB.len() {
  91             if max_pos <= H263_MBB[i].blocks {
  92                 mbpb = H263_MBB[i].bits;
  93                 break;
  94             }
  95         }
  96         RealVideo20BR {
  97             br:         BitReader::new(&src[soff..], src.len() - soff, BitReaderMode::BE),
  98             tables:     tables,
  99             num_slices: nslices,
 100             slice_no:   0,
 101             slice_off:  slice_offs,
 102             w:          width,
 103             h:          height,
 104             mb_w:       mb_w,
 105             mb_h:       mb_h,
 106             mb_pos_bits: mbpb,
 107             minor_ver:  minor_ver,
 108             rpr:        rpr,
 109         }
 110     }
 111
 112 #[allow(unused_variables)]
 113     fn decode_block(&mut self, sstate: &SliceState, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64], plane_no: usize, acpred: ACPredMode) -> DecoderResult<()> {
 114         let mut br = &mut self.br;
 115         let mut idx = 0;
 116         if !sstate.is_iframe && intra {
 117             let mut dc = br.read(8)? as i16;
 118             if dc == 255 { dc = 128; }
 119             blk[0] = dc << 3;
 120             idx = 1;
 121         }
 122         if !coded { return Ok(()); }
 123         let scan = match acpred {
 124                     ACPredMode::Hor => H263_SCAN_V,
 125                     ACPredMode::Ver => H263_SCAN_H,
 126                     _               => H263_ZIGZAG,
 127                 };
 128
 129         let rl_cb = if sstate.is_iframe { &self.tables.aic_rl_cb } else { &self.tables.rl_cb };
 130         let q_add = if quant == 0 { 0i16 } else { ((quant - 1) | 1) as i16 };
 131         let q = (quant * 2) as i16;
 132         while idx < 64 {
 133             let code = br.read_cb(rl_cb)?;
 134             let run;
 135             let mut level;
 136             let last;
 137             if !code.is_escape() {
 138                 run   = code.get_run();
 139                 level = code.get_level();
 140                 last  = code.is_last();
 141                 if br.read_bool()? { level = -level; }
 142                 if (idx != 0) || !sstate.is_iframe {
 143                     level = (level * q) + q_add;
 144                 } else {
 145                     level = level * (H263_DC_SCALES[quant as usize] as i16);
 146                 }
 147             } else {
 148                 last  = br.read_bool()?;
 149                 run   = br.read(6)? as u8;
 150                 level = br.read_s(8)? as i16;
 151                 if level == -128 {
 152                     let low = br.read(5)? as i16;
 153                     let top = br.read_s(6)? as i16;
 154                     level = (top << 5) | low;
 155                 }
 156                 if (idx != 0) || !sstate.is_iframe {
 157                     level = (level * q) + q_add;
 158                 } else {
 159                     level = level * (H263_DC_SCALES[quant as usize] as i16);
 160                 }
 161                 if level < -2048 { level = -2048; }
 162                 if level >  2047 { level =  2047; }
 163             }
 164             idx += run;
 165             validate!(idx < 64);
 166             let oidx = scan[idx as usize];
 167             blk[oidx] = level;
 168             idx += 1;
 169             if last { break; }
 170         }
 171         Ok(())
 172     }
 173 }
 174
 175 fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> {
 176     let code = br.read_cb(mv_cb)? as i16;
 177     if code == 0 { return Ok(0) }
 178     if !br.read_bool()? {
 179         Ok(code)
 180     } else {
 181         Ok(-code)
 182     }
 183 }
 184
 185 fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> {
 186     let xval = decode_mv_component(br, mv_cb)?;
 187     let yval = decode_mv_component(br, mv_cb)?;
 188 //println!("  MV {},{} @ {}", xval, yval, br.tell());
 189     Ok(MV::new(xval, yval))
 190 }
 191
 192 impl<'a> BlockDecoder for RealVideo20BR<'a> {
 193
 194 #[allow(unused_variables)]
 195     fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> {
 196         self.slice_no = 0;
 197 println!("decoding picture header size {}", if self.num_slices > 1 { self.slice_off[1] } else { ((self.br.tell() as u32) + (self.br.left() as u32))/8 });
 198         let shdr = self.read_slice_header()?;
 199 println!("slice ends @ {}\n", self.br.tell());
 200 //        self.slice_no += 1;
 201         validate!((shdr.mb_x == 0) && (shdr.mb_y == 0));
 202 /*        let mb_count;
 203         if self.slice_no < self.num_slices {
 204             let pos = self.br.tell();
 205             let shdr2 = self.read_slice_header()?;
 206             self.br.seek(pos as u32)?;
 207             mb_count = shdr2.mb_pos - shdr.mb_pos;
 208         } else {
 209             mb_count = self.mb_w * self.mb_h;
 210         }*/
 211
 212         let plusinfo = Some(PlusInfo::new(shdr.ftype == Type::I, false, false, false));
 213         let picinfo = PicInfo::new(shdr.w, shdr.h, shdr.ftype, false, false, shdr.qscale, 0, None, plusinfo);
 214         Ok(picinfo)
 215     }
 216
 217     #[allow(unused_variables)]
 218     fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> {
 219 //println!("read slice {} header", self.slice_no);
 220         let shdr = self.read_slice_header()?;
 221         self.slice_no += 1;
 222         let mb_count;
 223         if self.slice_no < self.num_slices {
 224             let pos = self.br.tell();
 225             let shdr2 = self.read_slice_header()?;
 226             mb_count = shdr2.mb_pos - shdr.mb_pos;
 227             self.br.seek(pos as u32)?;
 228         } else {
 229             mb_count = self.mb_w * self.mb_h - shdr.mb_pos;
 230         }
 231         let ret = SliceInfo::new(shdr.mb_x, shdr.mb_y, shdr.mb_pos + mb_count, shdr.qscale);
 232
 233         Ok(ret)
 234     }
 235
 236     fn decode_block_header(&mut self, info: &PicInfo, slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> {
 237         let mut br = &mut self.br;
 238         let mut q = slice.get_quant();
 239         match info.get_mode() {
 240             Type::I => {
 241                     let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?;
 242                     while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; }
 243                     let mut acpred = ACPredMode::None;
 244                     if let Some(ref pi) = info.plusinfo {
 245                         if pi.aic {
 246                             let acpp = br.read_bool()?;
 247                             acpred = ACPredMode::DC;
 248                             println!("   acp {} @ {}", acpp as u8, br.tell());
 249                             if acpp {
 250                                 acpred = if br.read_bool()? { ACPredMode::Hor } else { ACPredMode::Ver };
 251                             }
 252                         }
 253 println!("   @ {}", br.tell());
 254                     }
 255                     let cbpy = br.read_cb(&self.tables.cbpy_cb)?;
 256                     let cbp = (cbpy << 2) | (cbpc & 3);
 257                     let dquant = (cbpc & 4) != 0;
 258                     if dquant {
 259                         let idx = br.read(2)? as usize;
 260                         q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8;
 261                     }
 262 println!(" MB {},{} CBP {:X} @ {}", sstate.mb_x, sstate.mb_y, cbp, br.tell());
 263                     let mut binfo = BlockInfo::new(Type::I, cbp, q);
 264                     binfo.set_acpred(acpred);
 265                     Ok(binfo)
 266                 },
 267             Type::P => {
 268                     if br.read_bool()? {
 269                         return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant()));
 270                     }
 271                     let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?;
 272                     while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; }
 273                     let is_intra = (cbpc & 0x04) != 0;
 274                     let dquant   = (cbpc & 0x08) != 0;
 275                     let is_4x4   = (cbpc & 0x10) != 0;
 276                     if is_intra {
 277                         let cbpy = br.read_cb(&self.tables.cbpy_cb)?;
 278                         let cbp = (cbpy << 2) | (cbpc & 3);
 279                         if dquant {
 280                             let idx = br.read(2)? as usize;
 281                             q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8;
 282                         }
 283                         let binfo = BlockInfo::new(Type::I, cbp, q);
 284                         return Ok(binfo);
 285                     }
 286
 287                     let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?;
 288 //                    if /* !aiv && */(cbpc & 3) != 3 {
 289                         cbpy ^= 0xF;
 290 //                    }
 291                     let cbp = (cbpy << 2) | (cbpc & 3);
 292                     if dquant {
 293                         let idx = br.read(2)? as usize;
 294                         q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8;
 295                     }
 296 println!(" MB {}.{} cbp = {:X}", sstate.mb_x, sstate.mb_y, cbp);
 297                     let mut binfo = BlockInfo::new(Type::P, cbp, q);
 298                     if !is_4x4 {
 299                         let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?];
 300                         binfo.set_mv(&mvec);
 301                     } else {
 302                         let mvec: [MV; 4] = [
 303                                 decode_mv(br, &self.tables.mv_cb)?,
 304                                 decode_mv(br, &self.tables.mv_cb)?,
 305                                 decode_mv(br, &self.tables.mv_cb)?,
 306                                 decode_mv(br, &self.tables.mv_cb)?
 307                             ];
 308                         binfo.set_mv(&mvec);
 309                     }
 310                     Ok(binfo)
 311                 },
 312             _ => { // B
 313                     let mut mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize;
 314                     while mbtype == 14 { mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize; }
 315
 316                     let is_coded  = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_CODED) != 0;
 317                     let is_intra  = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_INTRA) != 0;
 318                     let dquant    = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_DQUANT) != 0;
 319                     let is_fwd    = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_FORWARD) != 0;
 320                     let is_bwd    = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_BACKWARD) != 0;
 321
 322                     let cbp = if is_coded {
 323                             let cbpc = br.read_cb(&self.tables.cbpc_b_cb)?;
 324                             let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?;
 325                             if !is_intra { cbpy ^= 0xF; }
 326                             (cbpy << 2) | (cbpc & 3)
 327                         } else { 0 };
 328
 329                     if dquant {
 330                         let idx = br.read(2)? as usize;
 331                         q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8;
 332                     }
 333 println!(" MB B {}.{} cbp = {:X} @ {} ({} {})", sstate.mb_x, sstate.mb_y, cbp, br.tell(), mbtype, is_intra);
 334
 335                     if is_intra {
 336                         let binfo = BlockInfo::new(Type::I, cbp, q);
 337                         return Ok(binfo);
 338                     }
 339
 340                     let mut binfo = BlockInfo::new(Type::B, cbp, q);
 341                     if is_fwd {
 342                         let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?];
 343                         binfo.set_mv(&mvec);
 344                     }
 345                     if is_bwd {
 346                         let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?];
 347                         binfo.set_b_mv(&mvec);
 348                     }
 349                     Ok(binfo)
 350                 },
 351         }
 352     }
 353
 354     fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
 355         self.decode_block(sstate, quant, true, coded, blk, if no < 4 { 0 } else { no - 3 }, info.get_acpred())
 356     }
 357
 358     #[allow(unused_variables)]
 359     fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
 360         self.decode_block(sstate, quant, false, coded, blk, if no < 4 { 0 } else { no - 3 }, ACPredMode::None)
 361     }
 362
 363     fn is_slice_end(&mut self) -> bool { false }
 364 }
 365
 366 impl<'a> RealVideo20BR<'a> {
 367 #[allow(unused_variables)]
 368     fn read_slice_header(&mut self) -> DecoderResult<RV20SliceInfo> {
 369         validate!(self.slice_no < self.num_slices);
 370
 371         let mut br = &mut self.br;
 372         br.seek(self.slice_off[self.slice_no] * 8)?;
 373 //println!(" slice at off {}", br.tell());
 374
 375         let frm_type    = br.read(2)?;
 376         let ftype = match frm_type {
 377                 0 | 1 => { Type::I },
 378                 2     => { Type::P },
 379                 _     => { Type::B },
 380             };
 381
 382         let marker      = br.read(1)?;
 383         validate!(marker == 0);
 384         let qscale      = br.read(5)? as u8;
 385         validate!(qscale > 0);
 386         if self.minor_ver >= 2 {
 387             br.skip(1)?; // loop filter
 388         }
 389         let seq = if self.minor_ver <= 1 {
 390                 br.read(8)?  << 7
 391             } else {
 392                 br.read(13)? << 2
 393             };
 394         let w;
 395         let h;
 396         if self.rpr.present {
 397             let rpr = br.read(self.rpr.bits)? as usize;
 398             if rpr == 0 {
 399                 w = self.w;
 400                 h = self.h;
 401             } else {
 402                 w = self.rpr.widths[rpr - 1];
 403                 h = self.rpr.heights[rpr - 1];
 404                 validate!((w != 0) && (h != 0));
 405             }
 406         } else {
 407             w = self.w;
 408             h = self.h;
 409         }
 410
 411         let mb_pos = br.read(self.mb_pos_bits)? as usize;
 412         let mb_x = mb_pos % self.mb_w;
 413         let mb_y = mb_pos / self.mb_w;
 414
 415         br.skip(1)?; // no rounding
 416
 417         if (self.minor_ver <= 1) && (frm_type == 3) {
 418             br.skip(5)?;
 419         }
 420 println!("slice q {} mb {},{}", qscale, mb_x, mb_y);
 421
 422         Ok(RV20SliceInfo::new(ftype, qscale, mb_x, mb_y, mb_pos, w, h))
 423     }
 424 }
 425
 426 impl RealVideo20Decoder {
 427     fn new() -> Self {
 428         let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC);
 429         let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
 430         let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC);
 431         let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
 432         let mut coderead = H263ShortCodeReader::new(H263_MBTYPE_B);
 433         let mbtype_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
 434         let mut coderead = H263ShortCodeReader::new(H263_CBPY);
 435         let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
 436         let mut coderead = H263ShortCodeReader::new(H263_CBPC_B);
 437         let cbpc_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
 438         let mut coderead = H263RLCodeReader::new(H263_RL_CODES);
 439         let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
 440         let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC);
 441         let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
 442         let mut coderead = H263ShortCodeReader::new(H263_MV);
 443         let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
 444
 445         let tables = Tables {
 446             intra_mcbpc_cb: intra_mcbpc_cb,
 447             inter_mcbpc_cb: inter_mcbpc_cb,
 448             mbtype_b_cb:    mbtype_b_cb,
 449             cbpy_cb:        cbpy_cb,
 450             cbpc_b_cb:      cbpc_b_cb,
 451             rl_cb:          rl_cb,
 452             aic_rl_cb:      aic_rl_cb,
 453             mv_cb:          mv_cb,
 454         };
 455
 456         RealVideo20Decoder{
 457             info:           Rc::new(DUMMY_CODEC_INFO),
 458             dec:            H263BaseDecoder::new(false),
 459             tables:         tables,
 460             w:              0,
 461             h:              0,
 462             minor_ver:      0,
 463             rpr:            RPRInfo { present: false, bits: 0, widths: [0; 8], heights: [0; 8] },
 464             bdsp:           H263BlockDSP::new(),
 465         }
 466     }
 467 }
 468
 469 impl NADecoder for RealVideo20Decoder {
 470 #[allow(unused_variables)]
 471     fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()> {
 472         if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
 473             let w = vinfo.get_width();
 474             let h = vinfo.get_height();
 475             let fmt = formats::YUV420_FORMAT;
 476             let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt));
 477             self.info = Rc::new(NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()));
 478             self.w = w;
 479             self.h = h;
 480
 481             let edata = info.get_extradata().unwrap();
 482             let src: &[u8] = &edata;
 483             let ver = ((src[4] as u32) << 12) | ((src[5] as u32) << 4) | ((src[6] as u32) >> 4);
 484             let maj_ver = ver >> 16;
 485             let min_ver = (ver >> 8) & 0xFF;
 486             let mic_ver = ver & 0xFF;
 487 println!("ver {:06X}", ver);
 488             validate!(maj_ver == 2);
 489             self.minor_ver = min_ver as u8;
 490             let rprb = src[1] & 7;
 491             if rprb == 0 {
 492                 self.rpr.present = false;
 493             } else {
 494                 self.rpr.present = true;
 495                 self.rpr.bits    = ((rprb >> 1) + 1) as u8;
 496                 for i in 4..(src.len()/2) {
 497                     self.rpr.widths [i - 4] = (src[i * 2]     as usize) * 4;
 498                     self.rpr.heights[i - 4] = (src[i * 2 + 1] as usize) * 4;
 499                 }
 500             }
 501             Ok(())
 502         } else {
 503             Err(DecoderError::InvalidData)
 504         }
 505     }
 506     fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
 507         let src = pkt.get_buffer();
 508
 509 println!(" decode frame size {}, {} slices", src.len(), src[0]+1);
 510         let mut ibr = RealVideo20BR::new(&src, &self.tables, self.w, self.h, self.minor_ver, self.rpr);
 511
 512         let bufinfo = self.dec.parse_frame(&mut ibr, &self.bdsp)?;
 513
 514         let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
 515         frm.set_keyframe(self.dec.is_intra());
 516         frm.set_frame_type(self.dec.get_frame_type());
 517         Ok(Rc::new(RefCell::new(frm)))
 518     }
 519 }
 520
 521 struct MBB { blocks: usize, bits: u8 }
 522 const H263_MBB: &[MBB; 7] = &[
 523     MBB{ blocks:    47, bits:  6 },
 524     MBB{ blocks:    98, bits:  7 },
 525     MBB{ blocks:   395, bits:  9 },
 526     MBB{ blocks:  1583, bits: 11 },
 527     MBB{ blocks:  6335, bits: 13 },
 528     MBB{ blocks:  9215, bits: 14 },
 529     MBB{ blocks: 65536, bits: 14 },
 530 ];
 531
 532 pub fn get_decoder() -> Box<NADecoder> {
 533     Box::new(RealVideo20Decoder::new())
 534 }
 535
 536 #[cfg(test)]
 537 mod test {
 538     use test::dec_video::test_file_decoding;
 539     #[test]
 540     fn test_rv20() {
 541         test_file_decoding("realmedia", "assets/RV/rv20_svt_atrc_640x352_realproducer_plus_8.51.rm", None, true, false, Some("rv20"));
 542 //        test_file_decoding("realmedia", "assets/RV/rv20_cook_640x352_realproducer_plus_8.51.rm", /*None*/Some(1000), true, false, Some("rv20"));
 543     }
 544 }