ts102366.rs

   1 use nihav_core::formats::*;
   2 use nihav_core::frame::*;
   3 use nihav_core::codecs::*;
   4 use nihav_core::io::bitreader::*;
   5 use nihav_codec_support::dsp::fft::*;
   6 use std::str::FromStr;
   7 use std::f32::consts;
   8
   9 const BLOCK_LEN: usize = 256;
  10 const NBLOCKS:   usize = 6;
  11 const MAX_CHANNELS: usize = 5;
  12 const MAX_CPLBANDS: usize = 18;
  13 const MAX_BANDS:    usize = 50;
  14
  15 const MAGIC_BYTE0: u8 = 0x0B;
  16 const MAGIC_BYTE1: u8 = 0x77;
  17
  18 const STRATEGY_REUSE: u8 = 0;
  19
  20 const LFE_CHANNEL:  usize = MAX_CHANNELS;
  21 const CPL_CHANNEL:  usize = MAX_CHANNELS + 1;
  22
  23 struct IMDCTContext {
  24     xsincos:    [FFTComplex; BLOCK_LEN/2],
  25     fft:        FFT,
  26     size:       usize,
  27 }
  28
  29 struct IMDCTWorkspace {
  30     z:      [FFTComplex; BLOCK_LEN / 2],
  31     y:      [FFTComplex; BLOCK_LEN / 2],
  32     out:    [f32; BLOCK_LEN * 2],
  33 }
  34
  35 impl IMDCTContext {
  36     fn new(bits: usize) -> Self {
  37         let size = 1 << bits;
  38         let size4 = 1 << (bits - 2);
  39         let mut xsincos: [FFTComplex; 512/4] = [FFTC_ZERO; 512/4];
  40         for k in 0..size4 {
  41             let factor = 2.0 * consts::PI * ((8 * k + 1) as f32) / ((8 * size) as f32);
  42             xsincos[k].re = -factor.cos();
  43             xsincos[k].im = -factor.sin();
  44         }
  45         let fft = FFTBuilder::new_fft(size/4, false);
  46         IMDCTContext { xsincos, size, fft }
  47     }
  48     #[allow(non_snake_case)]
  49     fn do_imdct(&mut self, coeffs: &[i32; BLOCK_LEN], tmp: &mut IMDCTWorkspace) {
  50         do_imdct_core(&mut self.fft, &self.xsincos, self.size, false, coeffs, &mut tmp.z, &mut tmp.y);
  51         let w = &TS102366_WINDOW;
  52         let N2 = self.size / 2;
  53         let N4 = self.size / 4;
  54         let N8 = self.size / 8;
  55         for n in 0..N8 {
  56             tmp.out[         2 * n]     = -tmp.y[N8 + n]    .im * w[     2 * n];
  57             tmp.out[         2 * n + 1] =  tmp.y[N8 - n - 1].re * w[     2 * n + 1];
  58             tmp.out[    N4 + 2 * n]     = -tmp.y[     n]    .re * w[N4 + 2 * n];
  59             tmp.out[    N4 + 2 * n + 1] =  tmp.y[N4 - n - 1].im * w[N4 + 2 * n + 1];
  60             tmp.out[    N2 + 2 * n]     = -tmp.y[N8 + n]    .re * w[N2 - 2 * n - 1];
  61             tmp.out[    N2 + 2 * n + 1] =  tmp.y[N8 - n - 1].im * w[N2 - 2 * n - 2];
  62             tmp.out[3 * N4 + 2 * n]     =  tmp.y[     n]    .im * w[N4 - 2 * n - 1];
  63             tmp.out[3 * N4 + 2 * n + 1] = -tmp.y[N4 - n - 1].re * w[N4 - 2 * n - 2];
  64         }
  65     }
  66     #[allow(non_snake_case)]
  67     fn do_imdct_ileave(&mut self, coeffs: &[i32; BLOCK_LEN], tmp: &mut IMDCTWorkspace) {
  68         let mut ziter = tmp.z.chunks_mut(self.size / 4);
  69         let z1 = ziter.next().unwrap();
  70         let z2 = ziter.next().unwrap();
  71         let mut yiter = tmp.y.chunks_mut(self.size / 4);
  72         let y1 = yiter.next().unwrap();
  73         let y2 = yiter.next().unwrap();
  74         do_imdct_core(&mut self.fft, &self.xsincos, self.size, true, coeffs,       z1, y1);
  75         do_imdct_core(&mut self.fft, &self.xsincos, self.size, true, &coeffs[1..], z2, y2);
  76         let w = &TS102366_WINDOW;
  77         let N2 = self.size / 2;
  78         let N4 = self.size / 4;
  79         let N8 = self.size / 8;
  80         for n in 0..N8 {
  81             tmp.out[         2 * n]     = -y1[     n]    .im * w[     2 * n];
  82             tmp.out[         2 * n + 1] =  y1[N8 - n - 1].re * w[     2 * n + 1];
  83             tmp.out[    N4 + 2 * n]     = -y1[     n]    .re * w[N4 + 2 * n];
  84             tmp.out[    N4 + 2 * n + 1] =  y1[N8 - n - 1].im * w[N4 + 2 * n + 1];
  85             tmp.out[    N2 + 2 * n]     = -y2[     n]    .re * w[N2 - 2 * n - 1];
  86             tmp.out[    N2 + 2 * n + 1] =  y2[N8 - n - 1].im * w[N2 - 2 * n - 2];
  87             tmp.out[3 * N4 + 2 * n]     =  y2[     n]    .im * w[N4 - 2 * n - 1];
  88             tmp.out[3 * N4 + 2 * n + 1] = -y2[N8 - n - 1].re * w[N4 - 2 * n - 2];
  89         }
  90     }
  91 }
  92
  93 #[allow(non_snake_case)]
  94 fn do_imdct_core(fft: &mut FFT, xsc: &[FFTComplex; BLOCK_LEN/2], size: usize, ilace: bool, coeffs: &[i32], z: &mut [FFTComplex], y: &mut [FFTComplex]) {
  95     let N  = size;
  96     let N2 = size / 2;
  97     let N4 = size / 4;
  98     let scale = 1.0 / ((1 << 24) as f32);
  99     for k in 0..N4 {
 100         let (c0, c1) = if !ilace {
 101                 ((coeffs[N2 - 2 * k - 1] as f32) * scale,
 102                  (coeffs[     2 * k]     as f32) * scale)
 103             } else {
 104                 ((coeffs[N - 4 * k - 2] as f32) * scale,
 105                  (coeffs[    4 * k]     as f32) * scale)
 106             };
 107         let c = FFTComplex { re: c0, im: c1 };
 108         z[k] = c * xsc[k];
 109     }
 110     fft.do_ifft_inplace(z);
 111     for k in 0..N4 {
 112         y[k] = z[k] * xsc[k];
 113     }
 114 }
 115
 116 struct AudioDecoder {
 117     info:       NACodecInfoRef,
 118     ablk:       AudioBlock,
 119     imdct512:   IMDCTContext,
 120     imdct256:   IMDCTContext,
 121     tmp:        IMDCTWorkspace,
 122     delay:      [[f32; BLOCK_LEN]; MAX_CHANNELS + 1],
 123 }
 124
 125 impl AudioDecoder {
 126     fn new() -> Self {
 127         AudioDecoder {
 128             info:       NACodecInfo::new_dummy(),
 129             ablk:       AudioBlock::new(),
 130             imdct512:   IMDCTContext::new(9),
 131             imdct256:   IMDCTContext::new(8),
 132             tmp:        IMDCTWorkspace {
 133                             z:      [FFTC_ZERO; BLOCK_LEN / 2],
 134                             y:      [FFTC_ZERO; BLOCK_LEN / 2],
 135                             out:    [0.0; BLOCK_LEN * 2],
 136                         },
 137             delay:      [[0.0; BLOCK_LEN]; MAX_CHANNELS + 1],
 138         }
 139     }
 140 }
 141
 142 const SAMPLE_RATES: [u32; 4] = [ 48000, 44100, 32000, 0 ];
 143
 144 const FRAME_SIZES: [[usize; 64]; 4] = [
 145     [
 146           64,   64,   80,   80,   96,   96,  112,  112,
 147          128,  128,  160,  160,  192,  192,  224,  224,
 148          256,  256,  320,  320,  384,  384,  448,  448,
 149          512,  512,  640,  640,  768,  768,  896,  896,
 150         1024, 1024, 1152, 1152, 1280, 1280,
 151         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 152         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 153     ], [
 154           69,   70,   87,   88,  104,  105,  121,  122,
 155          139,  140,  174,  175,  208,  209,  243,  244,
 156          278,  279,  348,  349,  417,  418,  487,  488,
 157          557,  558,  696,  697,  835,  836,  975,  976,
 158         1114, 1115, 1253, 1254, 1393, 1394,
 159         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 160         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 161     ], [
 162           96,   96,  120,  120,  144,  144,  168,  168,
 163          192,  192,  240,  240,  288,  288,  336,  336,
 164          384,  384,  480,  480,  576,  576,  672,  672,
 165          768,  768,  960,  960, 1152, 1152, 1344, 1344,
 166         1536, 1536, 1728, 1728, 1920, 1920,
 167         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 168         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 169     ], [ 0; 64 ],
 170 ];
 171
 172 #[derive(Debug,Clone,Copy)]
 173 struct Syncinfo {
 174     crc1:       u16,
 175     fscod:      u8,
 176     frmsizecod: u8,
 177     samplerate: u32,
 178     frame_size: usize,
 179 }
 180
 181 impl Syncinfo {
 182     fn read(br: &mut BitReader) -> DecoderResult<Self> {
 183         let syncword        = br.read(16)?;
 184         validate!(syncword == (u32::from(MAGIC_BYTE0) * 256) + u32::from(MAGIC_BYTE1));
 185         let crc1            = br.read(16)? as u16;
 186         let fscod           = br.read(2)? as usize;
 187         let frmsizecod      = br.read(6)? as usize;
 188         Ok(Syncinfo { crc1, fscod: fscod as u8, frmsizecod: frmsizecod as u8,
 189                       samplerate: SAMPLE_RATES[fscod], frame_size: FRAME_SIZES[fscod][frmsizecod] * 2 })
 190     }
 191     fn is_valid(&self) -> bool {
 192         (self.samplerate != 0) && (self.frame_size != 0)
 193     }
 194 }
 195
 196 trait ReadOptional {
 197     fn read_optional8(&mut self) -> BitReaderResult<Option<u8>>;
 198     fn read_optional16(&mut self, bits: u8) -> BitReaderResult<Option<u16>>;
 199 }
 200
 201 impl<'a> ReadOptional for BitReader<'a> {
 202     fn read_optional8(&mut self) -> BitReaderResult<Option<u8>> {
 203         if self.read_bool()? {
 204             Ok(Some(self.read(8)? as u8))
 205         } else {
 206             Ok(None)
 207         }
 208     }
 209     fn read_optional16(&mut self, bits: u8) -> BitReaderResult<Option<u16>> {
 210         if self.read_bool()? {
 211             Ok(Some(self.read(bits)? as u16))
 212         } else {
 213             Ok(None)
 214         }
 215     }
 216 }
 217
 218 #[derive(Debug,Clone,Copy,PartialEq)]
 219 enum ACMode {
 220     DualMono,
 221     Mono,
 222     Stereo,
 223     Mode3_0,
 224     Mode2_1,
 225     Mode3_1,
 226     Mode2_2,
 227     Mode3_2,
 228 }
 229
 230 impl ACMode {
 231     fn get_num_channels(self) -> usize {
 232         match self {
 233             ACMode::DualMono    => 2,
 234             ACMode::Mono        => 1,
 235             ACMode::Stereo      => 2,
 236             ACMode::Mode3_0     => 3,
 237             ACMode::Mode2_1     => 3,
 238             ACMode::Mode3_1     => 4,
 239             ACMode::Mode2_2     => 4,
 240             ACMode::Mode3_2     => 5,
 241         }
 242     }
 243     fn get_channel_map_str(self) -> &'static str {
 244         match self {
 245             ACMode::DualMono    => "C,C",
 246             ACMode::Mono        => "C",
 247             ACMode::Stereo      => "L,R",
 248             ACMode::Mode3_0     => "L,C,R",
 249             ACMode::Mode2_1     => "L,R,Cs",
 250             ACMode::Mode3_1     => "L,C,R,Cs",
 251             ACMode::Mode2_2     => "L,R,Ls,Rs",
 252             ACMode::Mode3_2     => "L,C,R,Ls,Rs",
 253         }
 254     }
 255     fn get_channel_map(self, has_lfe: bool) -> NAChannelMap {
 256         let mut chmap = NAChannelMap::from_str(self.get_channel_map_str()).unwrap();
 257         if has_lfe {
 258             chmap.add_channel(NAChannelType::LFE);
 259         }
 260         chmap
 261     }
 262     fn is_3_x(self) -> bool {
 263         match self {
 264             ACMode::Mode3_0 |
 265             ACMode::Mode3_1 |
 266             ACMode::Mode3_2     => true,
 267             _                   => false,
 268         }
 269     }
 270     fn is_surround(self) -> bool {
 271         match self {
 272             ACMode::Mode2_1 |
 273             ACMode::Mode3_1 |
 274             ACMode::Mode2_2 |
 275             ACMode::Mode3_2     => true,
 276             _                   => false,
 277         }
 278     }
 279 }
 280
 281 const AC_MODES: [ACMode; 8] = [
 282     ACMode::DualMono, ACMode::Mono, ACMode::Stereo,
 283     ACMode::Mode3_0, ACMode::Mode2_1,
 284     ACMode::Mode3_1, ACMode::Mode2_2,
 285     ACMode::Mode3_2
 286 ];
 287
 288 #[derive(Debug,Clone,Copy)]
 289 struct Mixinfo {
 290     dialnorm:   u8,
 291     compr:      Option<u8>,
 292     langcod:    Option<u8>,
 293     mixlevel:   Option<u8>,
 294     roomtyp:    Option<u8>,
 295 }
 296
 297 impl Mixinfo {
 298     fn read(br: &mut BitReader) -> DecoderResult<Self> {
 299         let dialnorm                = br.read(5)? as u8;
 300         let compr                   = br.read_optional8()?;
 301         let langcod                 = br.read_optional8()?;
 302         let (mixlevel, roomtyp) = if br.read_bool()? {
 303                 let mlev            = br.read(5)? as u8;
 304                 let rt              = br.read(2)? as u8;
 305                 validate!(rt < 3);
 306                 (Some(mlev), Some(rt))
 307             } else {
 308                 (None, None)
 309             };
 310         Ok(Mixinfo { dialnorm, compr, langcod, mixlevel, roomtyp })
 311     }
 312 }
 313
 314 #[derive(Debug,Clone,Copy)]
 315 struct BSI {
 316     bsid:       u8,
 317     shift:      u8,
 318     bsmod:      u8,
 319     acmod:      ACMode,
 320     cmixlev:    Option<u8>,
 321     surmixlev:  Option<u8>,
 322     dsurmod:    Option<u8>,
 323     lfeon:      bool,
 324     mixinfo:    Mixinfo,
 325     mixinfo2:   Option<Mixinfo>,
 326     copysmth:   bool,
 327     origbs:     bool,
 328     timecod1:   Option<u16>,
 329     timecod2:   Option<u16>,
 330     has_addb:   bool,
 331 }
 332
 333 impl BSI {
 334     fn read(br: &mut BitReader) -> DecoderResult<BSI> {
 335         let bsid                    = br.read(5)? as u8;
 336         validate!(bsid <= 10);
 337         let shift = if bsid < 9 { 0 } else { bsid - 9 + 1 };
 338         let bsmod                   = br.read(3)? as u8;
 339         let acmod_id                = br.read(3)? as usize;
 340         validate!(acmod_id < AC_MODES.len());
 341         let acmod = AC_MODES[acmod_id];
 342         let cmixlev = if acmod.is_3_x() {
 343                 let cl              = br.read(2)? as u8;
 344                 validate!(cl < 3);
 345                 Some(cl)
 346             } else { None };
 347         let surmixlev = if acmod.is_surround() {
 348                 let sml             = br.read(2)? as u8;
 349                 validate!(sml < 3);
 350                 Some(sml)
 351             } else { None };
 352         let dsurmod = if acmod == ACMode::Stereo {
 353                 let dsm             = br.read(2)? as u8;
 354                 validate!(dsm < 3);
 355                 Some(dsm)
 356             } else { None };
 357         let lfeon                   = br.read_bool()?;
 358         let mixinfo                 = Mixinfo::read(br)?;
 359         let mixinfo2 = if acmod == ACMode::DualMono {
 360                 Some(Mixinfo::read(br)?)
 361             } else {
 362                 None
 363             };
 364         let copysmth                = br.read_bool()?;
 365         let origbs                  = br.read_bool()?;
 366         let timecod1                = br.read_optional16(14)?;
 367         let timecod2                = br.read_optional16(14)?;
 368         let has_addb                = br.read_bool()?;
 369         Ok(BSI{
 370             bsid, shift, bsmod, acmod, lfeon,
 371             cmixlev, surmixlev, dsurmod,
 372             mixinfo, mixinfo2,
 373             copysmth, origbs, timecod1, timecod2, has_addb,
 374             })
 375     }
 376 }
 377
 378 #[derive(Clone, Copy)]
 379 struct ChannelData {
 380     blksw:      bool,
 381     dithflag:   bool,
 382
 383     chincpl:    bool,
 384     cplcoe:     bool,
 385     cplcoexp:   [u8; MAX_CPLBANDS],
 386     cplcomant:  [u8; MAX_CPLBANDS],
 387     mstrcplco:  u8,
 388
 389     chbwcod:    u8,
 390
 391     expstr:     u8,
 392     gainrng:    u8,
 393     startmant:  usize,
 394     endmant:    usize,
 395     groups:     usize,
 396
 397     fsnroffst:  u8,
 398     fgaincod:   usize,
 399     snroffset:  i32,
 400
 401     deltbae:    u8,
 402     deltnseg:   usize,
 403     deltoffst:  [u8; 8],
 404     deltlen:    [usize; 8],
 405     deltba:     [u8; 8],
 406
 407     bap:        [u8; 256],
 408     exps:       [u8; 256],
 409     mant:       [i32; 256],
 410
 411     psd:        [i16; 256],
 412     bndpsd:     [i32; 64],
 413 }
 414
 415 const GROUPS: [usize; 4] = [ 0, 3, 6, 12 ];
 416 const GROUP_BIAS: [usize; 4] = [ 0, 0, 3, 9 ];
 417
 418 fn decode_exps(br: &mut BitReader, dst: &mut [u8], mut prev: u8, grplen: usize) -> DecoderResult<()> {
 419     let repeat = grplen / 3;
 420
 421     for out in dst.chunks_mut(grplen) {
 422         let val                                         = br.read(7)? as u8;
 423         validate!(val < 125);
 424         let diff: [u8; 3] = [ val / 25,  (val / 5) % 5, val % 5 ];
 425         for (i, exps) in out.chunks_mut(repeat).enumerate() {
 426             exps[0] = (prev + diff[i]).wrapping_sub(2);
 427             validate!(exps[0] <= 24);
 428             for j in 1..repeat {
 429                 exps[j] = exps[0];
 430             }
 431             prev = exps[0];
 432         }
 433     }
 434
 435     Ok(())
 436 }
 437
 438 macro_rules! read_bap {
 439     ($br: expr, $tab:ident, $nbits:expr) => ({
 440             let val                                     = $br.read($nbits)? as usize;
 441             validate!(val < $tab.len());
 442             $tab[val]
 443         });
 444     ($br:expr, $tab:ident, $nbits:expr, $bufidx:expr, $bap_buf:expr, $bap_buf_fill:expr) => (
 445             if $bap_buf_fill[$bufidx] > 0 {
 446                 $bap_buf_fill[$bufidx] -= 1;
 447                 $bap_buf[$bufidx][$bap_buf_fill[$bufidx]]
 448             } else {
 449                 let val                                 = $br.read($nbits)? as usize;
 450                 validate!(val < $tab.len());
 451                 for i in 1..$tab[0].len() {
 452                     $bap_buf[$bufidx][i - 1] = $tab[val][i];
 453                 }
 454                 $bap_buf_fill[$bufidx] = $tab[0].len() - 1;
 455                 $tab[val][0]
 456             }
 457         );
 458 }
 459
 460 impl ChannelData {
 461     fn new() -> Self {
 462         ChannelData {
 463             blksw:      false,
 464             dithflag:   false,
 465
 466             chincpl:    false,
 467             cplcoe:     false,
 468             cplcoexp:   [0; MAX_CPLBANDS],
 469             cplcomant:  [0; MAX_CPLBANDS],
 470             mstrcplco:  0,
 471
 472             chbwcod:    0,
 473
 474             expstr:     0,
 475             gainrng:    0,
 476             startmant:  0,
 477             endmant:    0,
 478             groups:     0,
 479
 480             fsnroffst:  0,
 481             fgaincod:   0,
 482             snroffset:  0,
 483
 484             deltbae:    0,
 485             deltnseg:   0,
 486             deltoffst:  [0; 8],
 487             deltlen:    [0; 8],
 488             deltba:     [0; 8],
 489
 490             bap:        [0; 256],
 491             exps:       [0; 256],
 492             mant:       [0; 256],
 493
 494             psd:        [0; 256],
 495             bndpsd:     [0; 64],
 496         }
 497     }
 498     fn read_strategy(&mut self, br: &mut BitReader, blk_no: usize) -> DecoderResult<()> {
 499         self.expstr                                     = br.read(2)? as u8;
 500         validate!(blk_no != 0 || self.expstr != STRATEGY_REUSE);
 501         if self.expstr != STRATEGY_REUSE {
 502             if self.startmant > 0 {
 503                 self.groups = (self.endmant - self.startmant) / GROUPS[self.expstr as usize];
 504             } else if self.endmant != 0{
 505                 let idx = self.expstr as usize;
 506                 self.groups = (self.endmant + GROUP_BIAS[idx] - 1) / GROUPS[idx];
 507             } else {
 508                 self.groups = 0;
 509             }
 510         }
 511         Ok(())
 512     }
 513     fn read_exps(&mut self, br: &mut BitReader, is_cpl: bool, is_lfe: bool) -> DecoderResult<()> {
 514         if self.expstr == STRATEGY_REUSE { return Ok(()); }
 515         let grpsize = GROUPS[self.expstr as usize];
 516         self.exps = [0; 256];
 517         if is_cpl {
 518             let first                                   = (br.read(4)? as u8) << 1;
 519             let out = &mut self.exps[self.startmant..self.endmant];
 520             decode_exps(br, out, first, grpsize)?;
 521         } else if !is_lfe {
 522             self.exps[0]                                = br.read(4)? as u8;
 523             let first = self.exps[0];
 524             let out = &mut self.exps[1..self.endmant];
 525             decode_exps(br, out, first, grpsize)?;
 526             self.gainrng                                = br.read(2)? as u8;
 527         } else {
 528             self.exps[0]                                = br.read(4)? as u8;
 529             let first = self.exps[0];
 530             let out = &mut self.exps[1..7];
 531             decode_exps(br, out, first, grpsize)?;
 532         }
 533         Ok(())
 534     }
 535     fn read_snr(&mut self, br: &mut BitReader) -> DecoderResult<()> {
 536         self.fsnroffst                                  = br.read(4)? as u8;
 537         self.fgaincod                                   = br.read(3)? as usize;
 538         Ok(())
 539     }
 540     fn read_deltbai(&mut self, br: &mut BitReader) -> DecoderResult<()> {
 541         if self.deltbae == 1 {
 542             self.deltnseg                               = (br.read(3)? as usize) + 1;
 543             for seg in 0..self.deltnseg {
 544                 self.deltoffst[seg]                     = br.read(5)? as u8;
 545                 self.deltlen[seg]                       = br.read(4)? as usize;
 546                 self.deltba[seg]                        = br.read(3)? as u8;
 547             }
 548         }
 549         Ok(())
 550     }
 551
 552     fn compute_bndpsd(&mut self) {
 553         let start       = self.startmant;
 554         let end         = self.endmant;
 555         let exps        = &mut self.exps;
 556         let psd         = &mut self.psd;
 557         let bndpsd      = &mut self.bndpsd;
 558
 559         for bin in start..end {
 560             psd[bin] = 3072 - (i16::from(exps[bin]) << 7);
 561         }
 562
 563         let mut bin = start;
 564         let mut band = TS102366_BIN_TO_BAND[bin] as usize;
 565         let mut lastbin;
 566         loop {
 567             lastbin = ((TS102366_BAND_START[band] as usize) + (TS102366_BAND_SIZE[band] as usize)).min(end);
 568             bndpsd[band] = i32::from(psd[bin]);
 569             bin += 1;
 570             while bin < lastbin {
 571                 bndpsd[band] = logadd(bndpsd[band], i32::from(psd[bin]));
 572                 bin += 1;
 573             }
 574             band += 1;
 575             if lastbin >= end { break; }
 576         }
 577     }
 578     fn compute_mask(&mut self, mask: &mut [i32; MAX_BANDS], fscod: usize, sgain: u16, fdecay: u8, sdecay: u8,
 579                     dbknee: u16, cplfleak: u16, cplsleak: u16, shift: u8) {
 580         let fgain = i32::from(TS102366_FAST_GAIN[self.fgaincod]);
 581
 582         let bndstart = TS102366_BIN_TO_BAND[self.startmant] as usize;
 583         let bndend   = (TS102366_BIN_TO_BAND[self.endmant - 1] as usize) + 1;
 584
 585         let mut excite: [i32; MAX_BANDS] = [0; MAX_BANDS];
 586
 587         let begin;
 588         let mut fast_leak;
 589         let mut slow_leak;
 590         if bndstart == 0 {
 591             let lowcomp0 = calc_lowcomp(0, self.bndpsd[0], self.bndpsd[1], 0);
 592             excite[0] = self.bndpsd[0] - fgain - lowcomp0;
 593             let lowcomp1 = calc_lowcomp(lowcomp0, self.bndpsd[1], self.bndpsd[2], 1);
 594             excite[1] = self.bndpsd[1] - fgain - lowcomp1;
 595             let mut sband = 7;
 596             let mut lowcomp = lowcomp1;
 597             fast_leak = 0;
 598             slow_leak = 0;
 599             for band in 2..7 {
 600                 let not_lfe_case = (bndend != 7) || (band != 6);
 601                 if not_lfe_case {
 602                     lowcomp = calc_lowcomp(lowcomp, self.bndpsd[band], self.bndpsd[band + 1], band);
 603                 }
 604                 fast_leak = self.bndpsd[band] - fgain;
 605                 slow_leak = self.bndpsd[band] - i32::from(sgain);
 606                 excite[band] = fast_leak - lowcomp;
 607                 if not_lfe_case && (self.bndpsd[band] <= self.bndpsd[band + 1]) {
 608                     sband = band + 1;
 609                     break;
 610                 }
 611             }
 612             for band in sband..bndend.min(22) {
 613                 if (bndend != 7) || (band != 6) {
 614                     lowcomp = calc_lowcomp(lowcomp, self.bndpsd[band], self.bndpsd[band + 1], band);
 615                 }
 616                 fast_leak = (fast_leak - i32::from(fdecay)).max(self.bndpsd[band] - fgain);
 617                 slow_leak = (slow_leak - i32::from(sdecay)).max(self.bndpsd[band] - i32::from(sgain));
 618                 excite[band] = slow_leak.max(fast_leak - lowcomp);
 619             }
 620             begin = 22;
 621         } else {
 622             begin = bndstart;
 623             fast_leak = i32::from(cplfleak);
 624             slow_leak = i32::from(cplsleak);
 625         }
 626         for band in begin..bndend {
 627             fast_leak = (fast_leak - i32::from(fdecay)).max(self.bndpsd[band] - fgain);
 628             slow_leak = (slow_leak - i32::from(sdecay)).max(self.bndpsd[band] - i32::from(sgain));
 629             excite[band] = fast_leak.max(slow_leak);
 630         }
 631         for band in bndstart..bndend {
 632             if self.bndpsd[band] < i32::from(dbknee) {
 633                 excite[band] += (i32::from(dbknee) - self.bndpsd[band]) >> 2;
 634             }
 635             mask[band] = excite[band].max(i32::from(TS102366_HTH[fscod][band >> shift]));
 636         }
 637     }
 638     fn apply_delta_info(&mut self, mask: &mut [i32; MAX_BANDS]) {
 639         if self.deltbae == 0 || self.deltbae == 1 {
 640             let mut band = TS102366_BIN_TO_BAND[self.startmant] as usize;
 641             for seg in 0..self.deltnseg {
 642                 band += self.deltoffst[seg] as usize;
 643                 let delta = if self.deltba[seg] >= 4 {
 644                         (i32::from(self.deltba[seg]) - 3) << 7
 645                     } else {
 646                         (i32::from(self.deltba[seg]) - 4) << 7
 647                     };
 648                 if band + self.deltlen[seg] > MAX_BANDS { break; }
 649                 for _ in 0..self.deltlen[seg] {
 650                     mask[band] += delta;
 651                     band += 1;
 652                 }
 653             }
 654         }
 655     }
 656     fn calc_snr_offset(&mut self, csnroffst: u8) {
 657         self.snroffset = (((i32::from(csnroffst) - 15) << 4) + i32::from(self.fsnroffst)) << 2;
 658     }
 659     fn compute_bap(&mut self, mask: &mut [i32; MAX_BANDS], floor: u16) {
 660         let end = self.endmant;
 661         let mut band = TS102366_BIN_TO_BAND[self.startmant] as usize;
 662         let mut bin = self.startmant;
 663         let mut lastbin;
 664         loop {
 665             lastbin = ((TS102366_BAND_START[band] as usize) + (TS102366_BAND_SIZE[band] as usize)).min(end);
 666             mask[band] = (mask[band] - self.snroffset - i32::from(floor)).max(0) & 0x1FE0;
 667             mask[band] += i32::from(floor);
 668             while bin < lastbin {
 669                 let addr = ((i32::from(self.psd[bin]) - mask[band]) >> 5).min(63).max(0) as usize;
 670                 self.bap[bin] = TS102366_BAPTAB[addr];
 671                 bin += 1;
 672             }
 673             if lastbin == end { break; }
 674             band += 1;
 675         }
 676     }
 677     fn read_mant(&mut self, br: &mut BitReader, bap_buf: &mut [[i32; 2]; 3], bap_buf_fill: &mut [usize; 3]) -> DecoderResult<()> {
 678         self.mant = [0; BLOCK_LEN];
 679         for bin in self.startmant..self.endmant {
 680             self.mant[bin] = match self.bap[bin] {
 681                     0 => {
 682                             if self.dithflag {
 683                                 42 // todo dither
 684                             } else {
 685                                 0
 686                             }
 687                         },
 688                     1 => { read_bap!(br, TS102366_QUANT3_MAP,  5, 0, bap_buf, bap_buf_fill) },
 689                     2 => { read_bap!(br, TS102366_QUANT5_MAP,  7, 1, bap_buf, bap_buf_fill) },
 690                     3 => { read_bap!(br, TS102366_QUANT7_MAP,  3) },
 691                     4 => { read_bap!(br, TS102366_QUANT11_MAP, 7, 2, bap_buf, bap_buf_fill) },
 692                     5 => { read_bap!(br, TS102366_QUANT15_MAP, 4) },
 693                     _ => {
 694                             validate!(self.bap[bin] < 15);
 695                             let nbits = TS102366_BAP_BITS[(self.bap[bin] as usize) - 6];
 696                             let val                     = br.read(nbits)? as i16;
 697                             i32::from(val << (16 - nbits)) << 9
 698                         },
 699                 };
 700             self.mant[bin] >>= self.exps[bin];
 701         }
 702         Ok(())
 703     }
 704
 705     fn synth(&mut self, imdct512: &mut IMDCTContext, imdct256: &mut IMDCTContext, tmp: &mut IMDCTWorkspace, delay: &mut [f32; BLOCK_LEN], dst: &mut [f32]) {
 706         if !self.blksw {
 707             imdct512.do_imdct(&self.mant, tmp);
 708         } else {
 709             imdct256.do_imdct_ileave(&self.mant, tmp);
 710         }
 711         overlap(delay, &tmp.out, dst);
 712     }
 713 }
 714
 715 fn logadd(acc: i32, add: i32) -> i32 {
 716     let c = acc - add;
 717     let addr = (c.abs() >> 1).min(255);
 718     if c >= 0 {
 719         acc + i32::from(TS102366_LATAB[addr as usize])
 720     } else {
 721         add + i32::from(TS102366_LATAB[addr as usize])
 722     }
 723 }
 724
 725 fn calc_lowcomp(a: i32, b0: i32, b1: i32, band: usize) -> i32 {
 726     if band < 7 {
 727         if (b0 + 256) == b1 {
 728             384
 729         } else if b0 > b1 {
 730             0.max(a - 64)
 731         } else {
 732             a
 733         }
 734     } else if band < 20 {
 735         if (b0 + 256) == b1 {
 736             320
 737         } else if b0 > b1 {
 738             0.max(a - 64)
 739         } else {
 740             a
 741         }
 742     } else {
 743         0.max(a - 128)
 744     }
 745 }
 746
 747 fn overlap(delay: &mut [f32; BLOCK_LEN], src: &[f32; BLOCK_LEN * 2], out: &mut [f32]) {
 748     {
 749         let dly = &delay;
 750         for ((d, s), o) in dly.iter().zip(src.iter()).zip(out.iter_mut()) {
 751             *o = (*d + *s) * 2.0;
 752         }
 753     }
 754     delay.copy_from_slice(&src[BLOCK_LEN..]);
 755 }
 756
 757 #[derive(Clone)]
 758 struct AudioBlock {
 759     dynrng:     Option<u8>,
 760     dynrng2:    Option<u8>,
 761
 762     cplstre:    bool,
 763     cplinu:     bool,
 764     phsflginu:  bool,
 765     cplbegf:    usize,
 766     cplendf:    usize,
 767     ncplsubnd:  usize,
 768     ncplbnd:    usize,
 769     cplbndstrc: [bool; MAX_CPLBANDS],
 770
 771     phsflg:     [bool; MAX_CPLBANDS],
 772     rematstr:   bool,
 773     rematflg:   [bool; 4],
 774
 775     chdata:     [ChannelData; MAX_CHANNELS + 2],
 776
 777     baie:       bool,
 778     fdcycod:    usize,
 779     sdcycod:    usize,
 780     sgaincod:   usize,
 781     dbpbcod:    usize,
 782     floorcod:   usize,
 783     snroffste:  bool,
 784     csnroffst:  u8,
 785     cplleake:   bool,
 786     cplfleak:   u8,
 787     cplsleak:   u8,
 788
 789     deltbaie:   bool,
 790
 791     bap_buf:        [[i32; 2]; 3],
 792     bap_buf_fill:   [usize; 3],
 793 }
 794
 795 impl AudioBlock {
 796     fn new() -> Self {
 797         AudioBlock {
 798             chdata:     [ChannelData::new(); MAX_CHANNELS + 2],
 799
 800             dynrng:     None,
 801             dynrng2:    None,
 802
 803             cplstre:    false,
 804             cplinu:     false,
 805             phsflginu:  false,
 806             cplbegf:    0,
 807             cplendf:    0,
 808             ncplsubnd:  0,
 809             ncplbnd:    0,
 810             cplbndstrc: [false; MAX_CPLBANDS],
 811
 812             phsflg:     [false; MAX_CPLBANDS],
 813             rematstr:   false,
 814             rematflg:   [false; 4],
 815
 816             baie:       false,
 817             sdcycod:    0,
 818             fdcycod:    0,
 819             sgaincod:   0,
 820             dbpbcod:    0,
 821             floorcod:   0,
 822             snroffste:  false,
 823             csnroffst:  0,
 824             cplleake:   false,
 825             cplfleak:   0,
 826             cplsleak:   0,
 827
 828             deltbaie:   false,
 829
 830             bap_buf:        [[0; 2]; 3],
 831             bap_buf_fill:   [0; 3],
 832         }
 833     }
 834     fn read(&mut self, br: &mut BitReader, bsi: &BSI, fscod: usize, blk_no: usize) -> DecoderResult<bool> {
 835         let channels = bsi.acmod.get_num_channels();
 836         let is_stereo = bsi.acmod == ACMode::Stereo;
 837
 838         for ch in 0..channels {
 839             self.chdata[ch].blksw                   = br.read_bool()?;
 840         }
 841         // dynamic range information
 842         for ch in 0..channels {
 843             self.chdata[ch].dithflag                = br.read_bool()?;
 844         }
 845         self.dynrng                                 = br.read_optional8()?;
 846         if bsi.acmod == ACMode::DualMono {
 847             self.dynrng2                            = br.read_optional8()?;
 848         }
 849         // coupling strategy information
 850         self.cplstre                                = br.read_bool()?;
 851         validate!((blk_no != 0) || self.cplstre);
 852         if self.cplstre {
 853             self.cplinu                             = br.read_bool()?;
 854             if self.cplinu {
 855                 for ch in 0..channels {
 856                     self.chdata[ch].chincpl         = br.read_bool()?;
 857                 }
 858                 if is_stereo {
 859                     self.phsflginu                  = br.read_bool()?;
 860                 }
 861                 self.cplbegf                        = br.read(4)? as usize;
 862                 self.cplendf                        = (br.read(4)? as usize) + 3;
 863                 validate!(self.cplendf >= self.cplbegf);
 864                 self.ncplsubnd = self.cplendf - self.cplbegf;
 865                 self.ncplbnd = self.ncplsubnd;
 866                 self.chdata[CPL_CHANNEL].startmant = self.cplbegf * 12 + 37;
 867                 self.chdata[CPL_CHANNEL].endmant   = self.cplendf * 12 + 37;
 868                 for bnd in 1..self.ncplsubnd {
 869                     self.cplbndstrc[bnd]            = br.read_bool()?;
 870                     if self.cplbndstrc[bnd] {
 871                         self.ncplbnd -= 1;
 872                     }
 873                 }
 874             }
 875         }
 876         // coupling coordinates
 877         if self.cplinu {
 878             for c in 0..channels {
 879                 let ch = &mut self.chdata[c];
 880                 if ch.chincpl {
 881                     ch.cplcoe                       = br.read_bool()?;
 882                     if ch.cplcoe {
 883                         ch.mstrcplco                = br.read(2)? as u8;
 884                         for bnd in 0..self.ncplbnd {
 885                             ch.cplcoexp [bnd]       = br.read(4)? as u8;
 886                             ch.cplcomant[bnd]       = br.read(4)? as u8;
 887                         }
 888                     }
 889                 }
 890             }
 891             if is_stereo && self.phsflginu && (self.chdata[0].cplcoe || self.chdata[1].cplcoe) {
 892                 for bnd in 0..self.ncplbnd {
 893                     self.phsflg[bnd]                = br.read_bool()?;
 894                 }
 895             }
 896         } else {
 897             for ch in 0..channels {
 898                 self.chdata[ch].chincpl = false;
 899             }
 900         }
 901         // stereo rematrixing
 902         if is_stereo {
 903             self.rematstr                           = br.read_bool()?;
 904             if self.rematstr {
 905                 if self.cplbegf > 2 || !self.cplinu {
 906                     for rbnd in 0..4 {
 907                         self.rematflg[rbnd]         = br.read_bool()?;
 908                     }
 909                 }
 910                 if self.cplbegf > 0 && self.cplbegf <= 2 && self.cplinu {
 911                     for rbnd in 0..3 {
 912                         self.rematflg[rbnd]         = br.read_bool()?;
 913                     }
 914                 }
 915                 if self.cplbegf == 0 && self.cplinu {
 916                     for rbnd in 0..2 {
 917                         self.rematflg[rbnd]         = br.read_bool()?;
 918                     }
 919                 }
 920             }
 921         }
 922         // exponent strategy
 923         if self.cplinu {
 924             self.chdata[CPL_CHANNEL].read_strategy(br, blk_no)?;
 925         }
 926         for ch in 0..channels {
 927             self.chdata[ch].read_strategy(br, blk_no)?;
 928         }
 929         if bsi.lfeon {
 930             self.chdata[LFE_CHANNEL].expstr         = br.read(1)? as u8;
 931             validate!(blk_no != 0 || self.chdata[LFE_CHANNEL].expstr != STRATEGY_REUSE);
 932             self.chdata[LFE_CHANNEL].groups = 2;
 933             self.chdata[LFE_CHANNEL].startmant = 0;
 934             self.chdata[LFE_CHANNEL].endmant = 7;
 935         }
 936         let cpl_startmant = self.chdata[CPL_CHANNEL].startmant;
 937         for c in 0..channels {
 938             let ch = &mut self.chdata[c];
 939             if ch.expstr != STRATEGY_REUSE && !ch.chincpl {
 940                 ch.chbwcod                          = br.read(6)? as u8;
 941             }
 942             if !ch.chincpl {
 943                 ch.startmant = 0;
 944                 ch.endmant   = ((ch.chbwcod as usize) + 12) * 3 + 37;
 945             } else {
 946                 ch.startmant = 0;
 947                 ch.endmant   = cpl_startmant;
 948             }
 949         }
 950         // set number of mantissas
 951         if self.cplinu {
 952             self.chdata[CPL_CHANNEL].read_exps(br, true, false)?;
 953         }
 954         for ch in 0..channels {
 955             self.chdata[ch].read_exps(br, false, false)?;
 956         }
 957         if bsi.lfeon {
 958             self.chdata[LFE_CHANNEL].read_exps(br, false, true)?;
 959         }
 960         // bit allocation parameters
 961         self.baie                                   = br.read_bool()?;
 962         if self.baie {
 963             self.sdcycod                            = br.read(2)? as usize;
 964             self.fdcycod                            = br.read(2)? as usize;
 965             self.sgaincod                           = br.read(2)? as usize;
 966             self.dbpbcod                            = br.read(2)? as usize;
 967             self.floorcod                           = br.read(3)? as usize;
 968         }
 969         self.snroffste                              = br.read_bool()?;
 970         if self.snroffste {
 971             self.csnroffst                          = br.read(6)? as u8;
 972             if self.cplinu {
 973                 self.chdata[CPL_CHANNEL].read_snr(br)?;
 974             }
 975             for ch in 0..channels {
 976                 self.chdata[ch].read_snr(br)?;
 977             }
 978             if bsi.lfeon {
 979                 self.chdata[LFE_CHANNEL].read_snr(br)?;
 980             }
 981         }
 982         if self.cplinu {
 983             self.cplleake                           = br.read_bool()?;
 984             if self.cplleake {
 985                 self.cplfleak                       = br.read(3)? as u8;
 986                 self.cplsleak                       = br.read(3)? as u8;
 987             }
 988         }
 989         // delta bit allocation information
 990         self.deltbaie                               = br.read_bool()?;
 991         if self.deltbaie {
 992             if self.cplinu {
 993                 self.chdata[CPL_CHANNEL].deltbae    = br.read(2)? as u8;
 994                 validate!(blk_no != 0 || self.chdata[CPL_CHANNEL].deltbae != 0);
 995                 validate!(self.chdata[CPL_CHANNEL].deltbae != 3);
 996             }
 997             for ch in 0..channels {
 998                 self.chdata[ch].deltbae             = br.read(2)? as u8;
 999                 validate!(blk_no != 0 || self.chdata[ch].deltbae != 0);
1000                 validate!(self.chdata[ch].deltbae != 3);
1001             }
1002             if self.cplinu {
1003                 self.chdata[CPL_CHANNEL].read_deltbai(br)?;
1004             }
1005             for ch in 0..channels {
1006                 self.chdata[ch].read_deltbai(br)?;
1007             }
1008         }
1009         // dummy data
1010         if br.read_bool()? {
1011             let skipl                               = br.read(9)?;
1012             br.skip(skipl * 8)?;
1013         }
1014
1015         let all_zero = self.calc_bitalloc(bsi, channels, fscod);
1016         if all_zero { return Ok(true); }
1017
1018         // quantised mantissa values
1019         let mut got_cplchan = false;
1020         for i in 0..self.bap_buf_fill.len() { self.bap_buf_fill[i] = 0; }
1021         for c in 0..channels {
1022             {
1023                 let ch = &mut self.chdata[c];
1024                 ch.read_mant(br, &mut self.bap_buf, &mut self.bap_buf_fill)?;
1025             }
1026             if self.cplinu && self.chdata[c].chincpl && !got_cplchan {
1027                 let cplch = &mut self.chdata[CPL_CHANNEL];
1028                 cplch.read_mant(br, &mut self.bap_buf, &mut self.bap_buf_fill)?;
1029                 got_cplchan = true;
1030             }
1031         }
1032         if bsi.lfeon {
1033             let lfech = &mut self.chdata[LFE_CHANNEL];
1034             lfech.read_mant(br, &mut self.bap_buf, &mut self.bap_buf_fill)?;
1035         }
1036         Ok(false)
1037     }
1038     fn calc_bitalloc(&mut self, bsi: &BSI, channels: usize, fscod: usize) -> bool {
1039         let sdecay1 = TS102366_SLOW_DECAY[self.sdcycod];
1040         let fdecay1 = TS102366_FAST_DECAY[self.fdcycod];
1041
1042         let sdecay  = sdecay1 >> bsi.shift;
1043         let fdecay  = fdecay1 >> bsi.shift;
1044         let sgain   = TS102366_SLOW_GAIN[self.sgaincod];
1045         let dbknee  = TS102366_DBP_TAB[self.dbpbcod];
1046         let floor   = TS102366_FLOOR_TAB[self.floorcod];
1047
1048         let mut all_zero = self.csnroffst == 0;
1049         if !all_zero && self.chdata[LFE_CHANNEL].fsnroffst == 0 {
1050             for ch in 0..channels {
1051                 if self.chdata[ch].fsnroffst != 0 {
1052                     all_zero = false;
1053                     break;
1054                 }
1055             }
1056         }
1057         if all_zero { return true; }
1058
1059         let mut mask: [i32; MAX_BANDS] = [0; MAX_BANDS];
1060
1061         if self.cplinu {
1062             self.chdata[CPL_CHANNEL].compute_bndpsd();
1063             self.chdata[CPL_CHANNEL].compute_mask(&mut mask, fscod, sgain, fdecay, sdecay, dbknee,
1064                                                   (u16::from(self.cplfleak) << 8) + 768, (u16::from(self.cplsleak) << 8) + 768, bsi.shift);
1065             self.chdata[CPL_CHANNEL].apply_delta_info(&mut mask);
1066             self.chdata[CPL_CHANNEL].calc_snr_offset(self.csnroffst);
1067             self.chdata[CPL_CHANNEL].compute_bap(&mut mask, floor);
1068         }
1069         for ch in 0..channels {
1070             self.chdata[ch].compute_bndpsd();
1071             self.chdata[ch].compute_mask(&mut mask, fscod, sgain, fdecay, sdecay, dbknee, 0, 0, bsi.shift);
1072             self.chdata[ch].apply_delta_info(&mut mask);
1073             self.chdata[ch].calc_snr_offset(self.csnroffst);
1074             self.chdata[ch].compute_bap(&mut mask, floor);
1075         }
1076         if bsi.lfeon {
1077             self.chdata[LFE_CHANNEL].compute_bndpsd();
1078             self.chdata[LFE_CHANNEL].compute_mask(&mut mask, fscod, sgain, fdecay, sdecay, dbknee,
1079                                                   0, 0, bsi.shift);
1080             self.chdata[LFE_CHANNEL].calc_snr_offset(self.csnroffst);
1081             self.chdata[LFE_CHANNEL].compute_bap(&mut mask, floor);
1082         }
1083
1084         false
1085     }
1086     fn couple_channels(&mut self, acmod: ACMode) {
1087         if !self.cplinu { return; }
1088         for ch in 0..acmod.get_num_channels() {
1089             if !self.chdata[ch].chincpl { continue; }
1090             let mut pband = 0;
1091             for band in self.cplbegf..self.cplendf {
1092                 let cband = band - self.cplbegf;
1093                 let comant = self.chdata[ch].cplcomant[cband];
1094                 let mut cotemp = i32::from(if self.chdata[ch].cplcoexp[cband] == 15 { comant << 1 } else { comant + 16 });
1095                 if (acmod == ACMode::Stereo) && (ch == 1) && self.phsflginu && self.phsflg[pband] {
1096                     cotemp = -cotemp;
1097                 }
1098                 if !self.cplbndstrc[cband] {
1099                     pband += 1;
1100                 }
1101                 let exp = self.chdata[ch].cplcoexp[cband] + 3 * self.chdata[ch].mstrcplco + 5 - 3;
1102                 let start = band * 12 + 37;
1103                 for bin in 0..12 {
1104                     self.chdata[ch].mant[start + bin] = (self.chdata[CPL_CHANNEL].mant[start + bin] * cotemp) >> exp;
1105                 }
1106 //todo dither
1107             }
1108         }
1109     }
1110     fn rematrix(&mut self) {
1111         let maxbin = self.chdata[0].endmant.min(self.chdata[1].endmant);
1112         if self.rematflg[0] {
1113             let end = maxbin.min(25);
1114             for bin in 13..end {
1115                 let s = self.chdata[0].mant[bin] + self.chdata[1].mant[bin];
1116                 let d = self.chdata[0].mant[bin] - self.chdata[1].mant[bin];
1117                 self.chdata[0].mant[bin] = d;
1118                 self.chdata[1].mant[bin] = s;
1119             }
1120             if maxbin <= 25 { return; }
1121         }
1122         if self.rematflg[1] {
1123             let end = maxbin.min(37);
1124             for bin in 25..end {
1125                 let s = self.chdata[0].mant[bin] + self.chdata[1].mant[bin];
1126                 let d = self.chdata[0].mant[bin] - self.chdata[1].mant[bin];
1127                 self.chdata[0].mant[bin] = d;
1128                 self.chdata[1].mant[bin] = s;
1129             }
1130             if maxbin <= 37 { return; }
1131         }
1132         if self.rematflg[2] {
1133             let end = maxbin.min(61);
1134             for bin in 37..end {
1135                 let s = self.chdata[0].mant[bin] + self.chdata[1].mant[bin];
1136                 let d = self.chdata[0].mant[bin] - self.chdata[1].mant[bin];
1137                 self.chdata[0].mant[bin] = d;
1138                 self.chdata[1].mant[bin] = s;
1139             }
1140             if maxbin <= 61 { return; }
1141         }
1142         if self.rematflg[3] {
1143             let end = maxbin;
1144             for bin in 61..end {
1145                 let s = self.chdata[0].mant[bin] + self.chdata[1].mant[bin];
1146                 let d = self.chdata[0].mant[bin] - self.chdata[1].mant[bin];
1147                 self.chdata[0].mant[bin] = d;
1148                 self.chdata[1].mant[bin] = s;
1149             }
1150         }
1151     }
1152     fn synth_audio_block(&mut self, imdct512: &mut IMDCTContext, imdct256: &mut IMDCTContext, tmp: &mut IMDCTWorkspace, channel: usize, delay: &mut [f32; BLOCK_LEN], dst: &mut [f32]) {
1153         self.chdata[channel].synth(imdct512, imdct256, tmp, delay, dst);
1154     }
1155 }
1156
1157 impl NADecoder for AudioDecoder {
1158     fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
1159         if let NACodecTypeInfo::Audio(_) = info.get_properties() {
1160             self.info = info.clone();
1161             Ok(())
1162         } else {
1163             Err(DecoderError::InvalidData)
1164         }
1165     }
1166     fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
1167         let info = pkt.get_stream().get_info();
1168         validate!(info.get_properties().is_audio());
1169         let pktbuf = pkt.get_buffer();
1170         validate!(pktbuf.len() > 5);
1171
1172         let mut br;
1173         if (pktbuf[0] == MAGIC_BYTE0) && (pktbuf[1] == MAGIC_BYTE1) {
1174             br = BitReader::new(pktbuf.as_slice(), BitReaderMode::BE);
1175         } else if (pktbuf[0] == MAGIC_BYTE1) && (pktbuf[1] == MAGIC_BYTE0) {
1176             br = BitReader::new(pktbuf.as_slice(), BitReaderMode::LE16MSB);
1177         } else {
1178             return Err(DecoderError::InvalidData);
1179         }
1180
1181         let sinfo = Syncinfo::read(&mut br)?;
1182         validate!(sinfo.is_valid());
1183
1184         let bsi = BSI::read(&mut br)?;
1185         if bsi.has_addb {
1186             let len                 = br.read(6)?;
1187             br.skip((len + 1) * 8)?;
1188         }
1189
1190         let duration = BLOCK_LEN * NBLOCKS;
1191
1192         let core_channels = bsi.acmod.get_num_channels();
1193         let channels = core_channels + if bsi.lfeon { 1 } else { 0 };
1194
1195         let ainfo = NAAudioInfo::new(sinfo.samplerate >> bsi.shift, channels as u8,
1196                                      SND_F32P_FORMAT, BLOCK_LEN);
1197
1198         let abuf = alloc_audio_buffer(ainfo, duration, bsi.acmod.get_channel_map(bsi.lfeon))?;
1199         let mut adata = abuf.get_abuf_f32().unwrap();
1200         let output = adata.get_data_mut().unwrap();
1201
1202         self.ablk = AudioBlock::new();
1203         for blk in 0..NBLOCKS {
1204             let all_zero = self.ablk.read(&mut br, &bsi, sinfo.fscod as usize, blk)?;
1205             let off = blk * BLOCK_LEN;
1206             self.ablk.couple_channels(bsi.acmod);
1207             if bsi.acmod == ACMode::Stereo {
1208                 self.ablk.rematrix();
1209             }
1210             for ch in 0..core_channels {
1211                 let dpos = abuf.get_offset(ch) + off;
1212                 let dst = &mut output[dpos..][..BLOCK_LEN];
1213                 if !all_zero {
1214                     self.ablk.synth_audio_block(&mut self.imdct512, &mut self.imdct256, &mut self.tmp, ch, &mut self.delay[ch], dst);
1215                 } else {
1216                     self.delay[ch] = [0.0; BLOCK_LEN];
1217                     for el in dst.iter_mut().take(BLOCK_LEN) { *el = 0.0; }
1218                 }
1219             }
1220             if bsi.lfeon {
1221                 let dpos = abuf.get_offset(core_channels) + off;
1222                 let dst = &mut output[dpos..][..BLOCK_LEN];
1223                 if !all_zero {
1224                     self.ablk.synth_audio_block(&mut self.imdct512, &mut self.imdct256, &mut self.tmp, LFE_CHANNEL, &mut self.delay[LFE_CHANNEL], dst);
1225                 } else {
1226                     self.delay[LFE_CHANNEL] = [0.0; BLOCK_LEN];
1227                     for el in dst.iter_mut().take(BLOCK_LEN) { *el = 0.0; }
1228                 }
1229             }
1230         }
1231 //todo skip auxdata
1232 //todo do errorcheck
1233
1234         let mut frm = NAFrame::new_from_pkt(pkt, self.info.replace_info(NACodecTypeInfo::Audio(ainfo)), abuf);
1235         frm.set_keyframe(true);
1236         Ok(frm.into_ref())
1237     }
1238     fn flush(&mut self) {
1239         self.delay = [[0.0; BLOCK_LEN]; MAX_CHANNELS + 1];
1240     }
1241 }
1242
1243 pub fn get_decoder() -> Box<dyn NADecoder + Send> {
1244     Box::new(AudioDecoder::new())
1245 }
1246
1247 #[cfg(test)]
1248 mod test {
1249     use nihav_core::codecs::RegisteredDecoders;
1250     use nihav_core::demuxers::RegisteredDemuxers;
1251     use nihav_codec_support::test::dec_video::test_decode_audio;
1252     use crate::generic_register_all_codecs;
1253     use nihav_realmedia::realmedia_register_all_demuxers;
1254     #[test]
1255     fn test_ts102366() {
1256         let mut dmx_reg = RegisteredDemuxers::new();
1257         realmedia_register_all_demuxers(&mut dmx_reg);
1258         let mut dec_reg = RegisteredDecoders::new();
1259         generic_register_all_codecs(&mut dec_reg);
1260
1261         let file = "assets/RV/sp_sample1.rm";
1262         test_decode_audio("realmedia", file, Some(12000), None/*Some("ac3")*/, &dmx_reg, &dec_reg);
1263     }
1264 }
1265
1266 const TS102366_SLOW_DECAY: [u8; 4] = [ 0x0F, 0x11, 0x13, 0x15 ];
1267 const TS102366_FAST_DECAY: [u8; 4] = [ 0x3F, 0x53, 0x67, 0x7B ];
1268 const TS102366_SLOW_GAIN: [u16; 4] = [ 0x540, 0x4D8, 0x478, 0x410 ];
1269 const TS102366_FAST_GAIN: [u16; 8] = [ 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x380, 0x400 ];
1270 const TS102366_DBP_TAB:   [u16; 4] = [ 0x000, 0x700, 0x900, 0xB00 ];
1271 const TS102366_FLOOR_TAB: [u16; 8] = [ 0x02F0, 0x02B0, 0x0270, 0x0230, 0x01F0, 0x0170, 0x00F0, 0xF800 ];
1272
1273 const TS102366_BIN_TO_BAND: [u8; 256] = [
1274      0,  1,  2,  3,  4,  5,  6,  7,  8,  9,
1275     10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
1276     20, 21, 22, 23, 24, 25, 26, 27, 28, 28,
1277     28, 29, 29, 29, 30, 30, 30, 31, 31, 31,
1278     32, 32, 32, 33, 33, 33, 34, 34, 34, 35,
1279     35, 35, 35, 35, 35, 36, 36, 36, 36, 36,
1280     36, 37, 37, 37, 37, 37, 37, 38, 38, 38,
1281     38, 38, 38, 39, 39, 39, 39, 39, 39, 40,
1282     40, 40, 40, 40, 40, 41, 41, 41, 41, 41,
1283     41, 41, 41, 41, 41, 41, 41, 42, 42, 42,
1284     42, 42, 42, 42, 42, 42, 42, 42, 42, 43,
1285     43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
1286     43, 44, 44, 44, 44, 44, 44, 44, 44, 44,
1287     44, 44, 44, 45, 45, 45, 45, 45, 45, 45,
1288     45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
1289     45, 45, 45, 45, 45, 45, 45, 46, 46, 46,
1290     46, 46, 46, 46, 46, 46, 46, 46, 46, 46,
1291     46, 46, 46, 46, 46, 46, 46, 46, 46, 46,
1292     46, 47, 47, 47, 47, 47, 47, 47, 47, 47,
1293     47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
1294     47, 47, 47, 47, 47, 48, 48, 48, 48, 48,
1295     48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
1296     48, 48, 48, 48, 48, 48, 48, 48, 48, 49,
1297     49, 49, 49, 49, 49, 49, 49, 49, 49, 49,
1298     49, 49, 49, 49, 49, 49, 49, 49, 49, 49,
1299     49, 49, 49, 0, 0, 0
1300 ];
1301 const TS102366_BAND_SIZE: [u8; MAX_BANDS] = [
1302     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
1303     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
1304     1,  1,  1,  1,  1,  1,  1,  1,  3,  3,
1305     3,  3,  3,  3,  3,  6,  6,  6,  6,  6,
1306     6, 12, 12, 12, 12, 24, 24, 24, 24, 24
1307 ];
1308 const TS102366_BAND_START: [u8; MAX_BANDS] = [
1309      0,   1,   2,   3,   4,   5,   6,   7,   8,   9,
1310     10,  11,  12,  13,  14,  15,  16,  17,  18,  19,
1311     20,  21,  22,  23,  24,  25,  26,  27,  28,  31,
1312     34,  37,  40,  43,  46,  49,  55,  61,  67,  73,
1313     79,  85,  97, 109, 121, 133, 157, 181, 205, 229
1314 ];
1315
1316 const TS102366_LATAB: [u16; 256] = [
1317     0x0040, 0x003f, 0x003e, 0x003d, 0x003c, 0x003b, 0x003a, 0x0039,
1318     0x0038, 0x0037, 0x0036, 0x0035, 0x0034, 0x0034, 0x0033, 0x0032,
1319     0x0031, 0x0030, 0x002f, 0x002f, 0x002e, 0x002d, 0x002c, 0x002c,
1320     0x002b, 0x002a, 0x0029, 0x0029, 0x0028, 0x0027, 0x0026, 0x0026,
1321     0x0025, 0x0024, 0x0024, 0x0023, 0x0023, 0x0022, 0x0021, 0x0021,
1322     0x0020, 0x0020, 0x001f, 0x001e, 0x001e, 0x001d, 0x001d, 0x001c,
1323     0x001c, 0x001b, 0x001b, 0x001a, 0x001a, 0x0019, 0x0019, 0x0018,
1324     0x0018, 0x0017, 0x0017, 0x0016, 0x0016, 0x0015, 0x0015, 0x0015,
1325     0x0014, 0x0014, 0x0013, 0x0013, 0x0013, 0x0012, 0x0012, 0x0012,
1326     0x0011, 0x0011, 0x0011, 0x0010, 0x0010, 0x0010, 0x000f, 0x000f,
1327     0x000f, 0x000e, 0x000e, 0x000e, 0x000d, 0x000d, 0x000d, 0x000d,
1328     0x000c, 0x000c, 0x000c, 0x000c, 0x000b, 0x000b, 0x000b, 0x000b,
1329     0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x0009, 0x0009, 0x0009,
1330     0x0009, 0x0009, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
1331     0x0007, 0x0007, 0x0007, 0x0007, 0x0007, 0x0007, 0x0006, 0x0006,
1332     0x0006, 0x0006, 0x0006, 0x0006, 0x0006, 0x0006, 0x0005, 0x0005,
1333     0x0005, 0x0005, 0x0005, 0x0005, 0x0005, 0x0005, 0x0004, 0x0004,
1334     0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004,
1335     0x0004, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003,
1336     0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0002,
1337     0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002,
1338     0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002,
1339     0x0002, 0x0002, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001,
1340     0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001,
1341     0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001,
1342     0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001,
1343     0x0001, 0x0001, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
1344     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
1345     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
1346     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
1347     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
1348     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
1349 ];
1350 const TS102366_HTH: [[u16; MAX_BANDS]; 3] = [
1351   [
1352     0x04D0, 0x04D0, 0x0440, 0x0400, 0x03E0, 0x03C0, 0x03B0, 0x03B0, 0x03A0, 0x03A0,
1353     0x03A0, 0x03A0, 0x03A0, 0x0390, 0x0390, 0x0390, 0x0380, 0x0380, 0x0370, 0x0370,
1354     0x0360, 0x0360, 0x0350, 0x0350, 0x0340, 0x0340, 0x0330, 0x0320, 0x0310, 0x0300,
1355     0x02F0, 0x02F0, 0x02F0, 0x02F0, 0x0300, 0x0310, 0x0340, 0x0390, 0x03E0, 0x0420,
1356     0x0460, 0x0490, 0x04A0, 0x0460, 0x0440, 0x0440, 0x0520, 0x0800, 0x0840, 0x0840,
1357   ], [
1358     0x04F0, 0x04F0, 0x0460, 0x0410, 0x03E0, 0x03D0, 0x03C0, 0x03B0, 0x03B0, 0x03A0,
1359     0x03A0, 0x03A0, 0x03A0, 0x03A0, 0x0390, 0x0390, 0x0390, 0x0380, 0x0380, 0x0380,
1360     0x0370, 0x0370, 0x0360, 0x0360, 0x0350, 0x0350, 0x0340, 0x0340, 0x0320, 0x0310,
1361     0x0300, 0x02F0, 0x02F0, 0x02F0, 0x02F0, 0x0300, 0x0320, 0x0350, 0x0390, 0x03E0,
1362     0x0420, 0x0450, 0x04A0, 0x0490, 0x0460, 0x0440, 0x0480, 0x0630, 0x0840, 0x0840,
1363   ], [
1364     0x0580, 0x0580, 0x04B0, 0x0450, 0x0420, 0x03F0, 0x03E0, 0x03D0, 0x03C0, 0x03B0,
1365     0x03B0, 0x03B0, 0x03A0, 0x03A0, 0x03A0, 0x03A0, 0x03A0, 0x03A0, 0x03A0, 0x03A0,
1366     0x0390, 0x0390, 0x0390, 0x0390, 0x0380, 0x0380, 0x0380, 0x0370, 0x0360, 0x0350,
1367     0x0340, 0x0330, 0x0320, 0x0310, 0x0300, 0x02F0, 0x02F0, 0x02F0, 0x0300, 0x0310,
1368     0x0330, 0x0350, 0x03C0, 0x0410, 0x0470, 0x04A0, 0x0460, 0x0440, 0x0450, 0x04E0,
1369   ]
1370 ];
1371 const TS102366_BAPTAB: [u8; 64] = [
1372      0,  1,  1,  1,  1,  1,  2,  2,  3,  3,  3,  4,  4,  5,  5,  6,
1373      6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8,  9,  9,  9,  9, 10,
1374     10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14,
1375     14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15
1376 ];
1377
1378 const TS102366_QUANT3_MAP: [[i32; 3]; 27] = [
1379  [ -0x0AAAAAA, -0x0AAAAAA, -0x0AAAAAA ],
1380  [ -0x0AAAAAA, -0x0AAAAAA, 0x00000000 ],
1381  [ -0x0AAAAAA, -0x0AAAAAA, 0x00AAAAAA ],
1382  [ -0x0AAAAAA, 0x00000000, -0x0AAAAAA ],
1383  [ -0x0AAAAAA, 0x00000000, 0x00000000 ],
1384  [ -0x0AAAAAA, 0x00000000, 0x00AAAAAA ],
1385  [ -0x0AAAAAA, 0x00AAAAAA, -0x0AAAAAA ],
1386  [ -0x0AAAAAA, 0x00AAAAAA, 0x00000000 ],
1387  [ -0x0AAAAAA, 0x00AAAAAA, 0x00AAAAAA ],
1388  [ 0x00000000, -0x0AAAAAA, -0x0AAAAAA ],
1389  [ 0x00000000, -0x0AAAAAA, 0x00000000 ],
1390  [ 0x00000000, -0x0AAAAAA, 0x00AAAAAA ],
1391  [ 0x00000000, 0x00000000, -0x0AAAAAA ],
1392  [ 0x00000000, 0x00000000, 0x00000000 ],
1393  [ 0x00000000, 0x00000000, 0x00AAAAAA ],
1394  [ 0x00000000, 0x00AAAAAA, -0x0AAAAAA ],
1395  [ 0x00000000, 0x00AAAAAA, 0x00000000 ],
1396  [ 0x00000000, 0x00AAAAAA, 0x00AAAAAA ],
1397  [ 0x00AAAAAA, -0x0AAAAAA, -0x0AAAAAA ],
1398  [ 0x00AAAAAA, -0x0AAAAAA, 0x00000000 ],
1399  [ 0x00AAAAAA, -0x0AAAAAA, 0x00AAAAAA ],
1400  [ 0x00AAAAAA, 0x00000000, -0x0AAAAAA ],
1401  [ 0x00AAAAAA, 0x00000000, 0x00000000 ],
1402  [ 0x00AAAAAA, 0x00000000, 0x00AAAAAA ],
1403  [ 0x00AAAAAA, 0x00AAAAAA, -0x0AAAAAA ],
1404  [ 0x00AAAAAA, 0x00AAAAAA, 0x00000000 ],
1405  [ 0x00AAAAAA, 0x00AAAAAA, 0x00AAAAAA ]
1406 ];
1407 const TS102366_QUANT5_MAP: [[i32; 3]; 125] = [
1408  [ -0x0CCCCCC, -0x0CCCCCC, -0x0CCCCCC ], [ -0x0CCCCCC, -0x0CCCCCC, -0x0666666 ], [ -0x0CCCCCC, -0x0CCCCCC, 0x00000000 ],
1409                                          [ -0x0CCCCCC, -0x0CCCCCC, 0x00666666 ], [ -0x0CCCCCC, -0x0CCCCCC, 0x00CCCCCC ],
1410  [ -0x0CCCCCC, -0x0666666, -0x0CCCCCC ], [ -0x0CCCCCC, -0x0666666, -0x0666666 ], [ -0x0CCCCCC, -0x0666666, 0x00000000 ],
1411                                          [ -0x0CCCCCC, -0x0666666, 0x00666666 ], [ -0x0CCCCCC, -0x0666666, 0x00CCCCCC ],
1412  [ -0x0CCCCCC, 0x00000000, -0x0CCCCCC ], [ -0x0CCCCCC, 0x00000000, -0x0666666 ], [ -0x0CCCCCC, 0x00000000, 0x00000000 ],
1413                                          [ -0x0CCCCCC, 0x00000000, 0x00666666 ], [ -0x0CCCCCC, 0x00000000, 0x00CCCCCC ],
1414  [ -0x0CCCCCC, 0x00666666, -0x0CCCCCC ], [ -0x0CCCCCC, 0x00666666, -0x0666666 ], [ -0x0CCCCCC, 0x00666666, 0x00000000 ],
1415                                          [ -0x0CCCCCC, 0x00666666, 0x00666666 ], [ -0x0CCCCCC, 0x00666666, 0x00CCCCCC ],
1416  [ -0x0CCCCCC, 0x00CCCCCC, -0x0CCCCCC ], [ -0x0CCCCCC, 0x00CCCCCC, -0x0666666 ], [ -0x0CCCCCC, 0x00CCCCCC, 0x00000000 ],
1417                                          [ -0x0CCCCCC, 0x00CCCCCC, 0x00666666 ], [ -0x0CCCCCC, 0x00CCCCCC, 0x00CCCCCC ],
1418  [ -0x0666666, -0x0CCCCCC, -0x0CCCCCC ], [ -0x0666666, -0x0CCCCCC, -0x0666666 ], [ -0x0666666, -0x0CCCCCC, 0x00000000 ],
1419                                          [ -0x0666666, -0x0CCCCCC, 0x00666666 ], [ -0x0666666, -0x0CCCCCC, 0x00CCCCCC ],
1420  [ -0x0666666, -0x0666666, -0x0CCCCCC ], [ -0x0666666, -0x0666666, -0x0666666 ], [ -0x0666666, -0x0666666, 0x00000000 ],
1421                                          [ -0x0666666, -0x0666666, 0x00666666 ], [ -0x0666666, -0x0666666, 0x00CCCCCC ],
1422  [ -0x0666666, 0x00000000, -0x0CCCCCC ], [ -0x0666666, 0x00000000, -0x0666666 ], [ -0x0666666, 0x00000000, 0x00000000 ],
1423                                          [ -0x0666666, 0x00000000, 0x00666666 ], [ -0x0666666, 0x00000000, 0x00CCCCCC ],
1424  [ -0x0666666, 0x00666666, -0x0CCCCCC ], [ -0x0666666, 0x00666666, -0x0666666 ], [ -0x0666666, 0x00666666, 0x00000000 ],
1425                                          [ -0x0666666, 0x00666666, 0x00666666 ], [ -0x0666666, 0x00666666, 0x00CCCCCC ],
1426  [ -0x0666666, 0x00CCCCCC, -0x0CCCCCC ], [ -0x0666666, 0x00CCCCCC, -0x0666666 ], [ -0x0666666, 0x00CCCCCC, 0x00000000 ],
1427                                          [ -0x0666666, 0x00CCCCCC, 0x00666666 ], [ -0x0666666, 0x00CCCCCC, 0x00CCCCCC ],
1428  [ 0x00000000, -0x0CCCCCC, -0x0CCCCCC ], [ 0x00000000, -0x0CCCCCC, -0x0666666 ], [ 0x00000000, -0x0CCCCCC, 0x00000000 ],
1429                                          [ 0x00000000, -0x0CCCCCC, 0x00666666 ], [ 0x00000000, -0x0CCCCCC, 0x00CCCCCC ],
1430  [ 0x00000000, -0x0666666, -0x0CCCCCC ], [ 0x00000000, -0x0666666, -0x0666666 ], [ 0x00000000, -0x0666666, 0x00000000 ],
1431                                          [ 0x00000000, -0x0666666, 0x00666666 ], [ 0x00000000, -0x0666666, 0x00CCCCCC ],
1432  [ 0x00000000, 0x00000000, -0x0CCCCCC ], [ 0x00000000, 0x00000000, -0x0666666 ], [ 0x00000000, 0x00000000, 0x00000000 ],
1433                                          [ 0x00000000, 0x00000000, 0x00666666 ], [ 0x00000000, 0x00000000, 0x00CCCCCC ],
1434  [ 0x00000000, 0x00666666, -0x0CCCCCC ], [ 0x00000000, 0x00666666, -0x0666666 ], [ 0x00000000, 0x00666666, 0x00000000 ],
1435                                          [ 0x00000000, 0x00666666, 0x00666666 ], [ 0x00000000, 0x00666666, 0x00CCCCCC ],
1436  [ 0x00000000, 0x00CCCCCC, -0x0CCCCCC ], [ 0x00000000, 0x00CCCCCC, -0x0666666 ], [ 0x00000000, 0x00CCCCCC, 0x00000000 ],
1437                                          [ 0x00000000, 0x00CCCCCC, 0x00666666 ], [ 0x00000000, 0x00CCCCCC, 0x00CCCCCC ],
1438  [ 0x00666666, -0x0CCCCCC, -0x0CCCCCC ], [ 0x00666666, -0x0CCCCCC, -0x0666666 ], [ 0x00666666, -0x0CCCCCC, 0x00000000 ],
1439                                          [ 0x00666666, -0x0CCCCCC, 0x00666666 ], [ 0x00666666, -0x0CCCCCC, 0x00CCCCCC ],
1440  [ 0x00666666, -0x0666666, -0x0CCCCCC ], [ 0x00666666, -0x0666666, -0x0666666 ], [ 0x00666666, -0x0666666, 0x00000000 ],
1441                                          [ 0x00666666, -0x0666666, 0x00666666 ], [ 0x00666666, -0x0666666, 0x00CCCCCC ],
1442  [ 0x00666666, 0x00000000, -0x0CCCCCC ], [ 0x00666666, 0x00000000, -0x0666666 ], [ 0x00666666, 0x00000000, 0x00000000 ],
1443                                          [ 0x00666666, 0x00000000, 0x00666666 ], [ 0x00666666, 0x00000000, 0x00CCCCCC ],
1444  [ 0x00666666, 0x00666666, -0x0CCCCCC ], [ 0x00666666, 0x00666666, -0x0666666 ], [ 0x00666666, 0x00666666, 0x00000000 ],
1445                                          [ 0x00666666, 0x00666666, 0x00666666 ], [ 0x00666666, 0x00666666, 0x00CCCCCC ],
1446  [ 0x00666666, 0x00CCCCCC, -0x0CCCCCC ], [ 0x00666666, 0x00CCCCCC, -0x0666666 ], [ 0x00666666, 0x00CCCCCC, 0x00000000 ],
1447                                          [ 0x00666666, 0x00CCCCCC, 0x00666666 ], [ 0x00666666, 0x00CCCCCC, 0x00CCCCCC ],
1448  [ 0x00CCCCCC, -0x0CCCCCC, -0x0CCCCCC ], [ 0x00CCCCCC, -0x0CCCCCC, -0x0666666 ], [ 0x00CCCCCC, -0x0CCCCCC, 0x00000000 ],
1449                                          [ 0x00CCCCCC, -0x0CCCCCC, 0x00666666 ], [ 0x00CCCCCC, -0x0CCCCCC, 0x00CCCCCC ],
1450  [ 0x00CCCCCC, -0x0666666, -0x0CCCCCC ], [ 0x00CCCCCC, -0x0666666, -0x0666666 ], [ 0x00CCCCCC, -0x0666666, 0x00000000 ],
1451                                          [ 0x00CCCCCC, -0x0666666, 0x00666666 ], [ 0x00CCCCCC, -0x0666666, 0x00CCCCCC ],
1452  [ 0x00CCCCCC, 0x00000000, -0x0CCCCCC ], [ 0x00CCCCCC, 0x00000000, -0x0666666 ], [ 0x00CCCCCC, 0x00000000, 0x00000000 ],
1453                                          [ 0x00CCCCCC, 0x00000000, 0x00666666 ], [ 0x00CCCCCC, 0x00000000, 0x00CCCCCC ],
1454  [ 0x00CCCCCC, 0x00666666, -0x0CCCCCC ], [ 0x00CCCCCC, 0x00666666, -0x0666666 ], [ 0x00CCCCCC, 0x00666666, 0x00000000 ],
1455                                          [ 0x00CCCCCC, 0x00666666, 0x00666666 ], [ 0x00CCCCCC, 0x00666666, 0x00CCCCCC ],
1456  [ 0x00CCCCCC, 0x00CCCCCC, -0x0CCCCCC ], [ 0x00CCCCCC, 0x00CCCCCC, -0x0666666 ], [ 0x00CCCCCC, 0x00CCCCCC, 0x00000000 ],
1457                                          [ 0x00CCCCCC, 0x00CCCCCC, 0x00666666 ], [ 0x00CCCCCC, 0x00CCCCCC, 0x00CCCCCC ],
1458 ];
1459 const TS102366_QUANT7_MAP: [i32; 7] = [
1460     -0xDB6DB6, -0x924924, -0x492492, 0x000000, 0x492492, 0x924924, 0xDB6DB6
1461 ];
1462 const TS102366_QUANT11_MAP: [[i32; 2]; 121] = [
1463  [ -0x0E8BA2E, -0x0E8BA2E ], [ -0x0E8BA2E, -0x0BA2E8B ], [ -0x0E8BA2E, -0x08BA2E8 ],
1464  [ -0x0E8BA2E, -0x05D1745 ], [ -0x0E8BA2E, -0x02E8BA2 ], [ -0x0E8BA2E, 0x00000000 ],
1465  [ -0x0E8BA2E, 0x002E8BA2 ], [ -0x0E8BA2E, 0x005D1745 ], [ -0x0E8BA2E, 0x008BA2E8 ],
1466  [ -0x0E8BA2E, 0x00BA2E8B ], [ -0x0E8BA2E, 0x00E8BA2E ], [ -0x0BA2E8B, -0x0E8BA2E ],
1467  [ -0x0BA2E8B, -0x0BA2E8B ], [ -0x0BA2E8B, -0x08BA2E8 ], [ -0x0BA2E8B, -0x05D1745 ],
1468  [ -0x0BA2E8B, -0x02E8BA2 ], [ -0x0BA2E8B, 0x00000000 ], [ -0x0BA2E8B, 0x002E8BA2 ],
1469  [ -0x0BA2E8B, 0x005D1745 ], [ -0x0BA2E8B, 0x008BA2E8 ], [ -0x0BA2E8B, 0x00BA2E8B ],
1470  [ -0x0BA2E8B, 0x00E8BA2E ], [ -0x08BA2E8, -0x0E8BA2E ], [ -0x08BA2E8, -0x0BA2E8B ],
1471  [ -0x08BA2E8, -0x08BA2E8 ], [ -0x08BA2E8, -0x05D1745 ], [ -0x08BA2E8, -0x02E8BA2 ],
1472  [ -0x08BA2E8, 0x00000000 ], [ -0x08BA2E8, 0x002E8BA2 ], [ -0x08BA2E8, 0x005D1745 ],
1473  [ -0x08BA2E8, 0x008BA2E8 ], [ -0x08BA2E8, 0x00BA2E8B ], [ -0x08BA2E8, 0x00E8BA2E ],
1474  [ -0x05D1745, -0x0E8BA2E ], [ -0x05D1745, -0x0BA2E8B ], [ -0x05D1745, -0x08BA2E8 ],
1475  [ -0x05D1745, -0x05D1745 ], [ -0x05D1745, -0x02E8BA2 ], [ -0x05D1745, 0x00000000 ],
1476  [ -0x05D1745, 0x002E8BA2 ], [ -0x05D1745, 0x005D1745 ], [ -0x05D1745, 0x008BA2E8 ],
1477  [ -0x05D1745, 0x00BA2E8B ], [ -0x05D1745, 0x00E8BA2E ], [ -0x02E8BA2, -0x0E8BA2E ],
1478  [ -0x02E8BA2, -0x0BA2E8B ], [ -0x02E8BA2, -0x08BA2E8 ], [ -0x02E8BA2, -0x05D1745 ],
1479  [ -0x02E8BA2, -0x02E8BA2 ], [ -0x02E8BA2, 0x00000000 ], [ -0x02E8BA2, 0x002E8BA2 ],
1480  [ -0x02E8BA2, 0x005D1745 ], [ -0x02E8BA2, 0x008BA2E8 ], [ -0x02E8BA2, 0x00BA2E8B ],
1481  [ -0x02E8BA2, 0x00E8BA2E ], [ 0x00000000, -0x0E8BA2E ], [ 0x00000000, -0x0BA2E8B ],
1482  [ 0x00000000, -0x08BA2E8 ], [ 0x00000000, -0x05D1745 ], [ 0x00000000, -0x02E8BA2 ],
1483  [ 0x00000000, 0x00000000 ], [ 0x00000000, 0x002E8BA2 ], [ 0x00000000, 0x005D1745 ],
1484  [ 0x00000000, 0x008BA2E8 ], [ 0x00000000, 0x00BA2E8B ], [ 0x00000000, 0x00E8BA2E ],
1485  [ 0x002E8BA2, -0x0E8BA2E ], [ 0x002E8BA2, -0x0BA2E8B ], [ 0x002E8BA2, -0x08BA2E8 ],
1486  [ 0x002E8BA2, -0x05D1745 ], [ 0x002E8BA2, -0x02E8BA2 ], [ 0x002E8BA2, 0x00000000 ],
1487  [ 0x002E8BA2, 0x002E8BA2 ], [ 0x002E8BA2, 0x005D1745 ], [ 0x002E8BA2, 0x008BA2E8 ],
1488  [ 0x002E8BA2, 0x00BA2E8B ], [ 0x002E8BA2, 0x00E8BA2E ], [ 0x005D1745, -0x0E8BA2E ],
1489  [ 0x005D1745, -0x0BA2E8B ], [ 0x005D1745, -0x08BA2E8 ], [ 0x005D1745, -0x05D1745 ],
1490  [ 0x005D1745, -0x02E8BA2 ], [ 0x005D1745, 0x00000000 ], [ 0x005D1745, 0x002E8BA2 ],
1491  [ 0x005D1745, 0x005D1745 ], [ 0x005D1745, 0x008BA2E8 ], [ 0x005D1745, 0x00BA2E8B ],
1492  [ 0x005D1745, 0x00E8BA2E ], [ 0x008BA2E8, -0x0E8BA2E ], [ 0x008BA2E8, -0x0BA2E8B ],
1493  [ 0x008BA2E8, -0x08BA2E8 ], [ 0x008BA2E8, -0x05D1745 ], [ 0x008BA2E8, -0x02E8BA2 ],
1494  [ 0x008BA2E8, 0x00000000 ], [ 0x008BA2E8, 0x002E8BA2 ], [ 0x008BA2E8, 0x005D1745 ],
1495  [ 0x008BA2E8, 0x008BA2E8 ], [ 0x008BA2E8, 0x00BA2E8B ], [ 0x008BA2E8, 0x00E8BA2E ],
1496  [ 0x00BA2E8B, -0x0E8BA2E ], [ 0x00BA2E8B, -0x0BA2E8B ], [ 0x00BA2E8B, -0x08BA2E8 ],
1497  [ 0x00BA2E8B, -0x05D1745 ], [ 0x00BA2E8B, -0x02E8BA2 ], [ 0x00BA2E8B, 0x00000000 ],
1498  [ 0x00BA2E8B, 0x002E8BA2 ], [ 0x00BA2E8B, 0x005D1745 ], [ 0x00BA2E8B, 0x008BA2E8 ],
1499  [ 0x00BA2E8B, 0x00BA2E8B ], [ 0x00BA2E8B, 0x00E8BA2E ], [ 0x00E8BA2E, -0x0E8BA2E ],
1500  [ 0x00E8BA2E, -0x0BA2E8B ], [ 0x00E8BA2E, -0x08BA2E8 ], [ 0x00E8BA2E, -0x05D1745 ],
1501  [ 0x00E8BA2E, -0x02E8BA2 ], [ 0x00E8BA2E, 0x00000000 ], [ 0x00E8BA2E, 0x002E8BA2 ],
1502  [ 0x00E8BA2E, 0x005D1745 ], [ 0x00E8BA2E, 0x008BA2E8 ], [ 0x00E8BA2E, 0x00BA2E8B ],
1503  [ 0x00E8BA2E, 0x00E8BA2E ],
1504 ];
1505 const TS102366_QUANT15_MAP: [i32; 15] = [
1506  -0x0EEEEEE, -0x0CCCCCC, -0x0AAAAAA, -0x0888888, -0x0666666, -0x0444444, -0x0222222, 0x00000000,
1507              0x00222222, 0x00444444, 0x00666666, 0x00888888, 0x00AAAAAA, 0x00CCCCCC, 0x00EEEEEE,
1508 ];
1509 const TS102366_BAP_BITS: [u8; 10] = [ 5, 6, 7, 8, 9, 10, 11, 12, 14, 16 ];
1510
1511 const TS102366_WINDOW: [f32; 256] = [
1512     0.00014, 0.00024, 0.00037, 0.00051, 0.00067, 0.00086, 0.00107, 0.00130,
1513     0.00157, 0.00187, 0.00220, 0.00256, 0.00297, 0.00341, 0.00390, 0.00443,
1514     0.00501, 0.00564, 0.00632, 0.00706, 0.00785, 0.00871, 0.00962, 0.01061,
1515     0.01166, 0.01279, 0.01399, 0.01526, 0.01662, 0.01806, 0.01959, 0.02121,
1516     0.02292, 0.02472, 0.02662, 0.02863, 0.03073, 0.03294, 0.03527, 0.03770,
1517     0.04025, 0.04292, 0.04571, 0.04862, 0.05165, 0.05481, 0.05810, 0.06153,
1518     0.06508, 0.06878, 0.07261, 0.07658, 0.08069, 0.08495, 0.08935, 0.09389,
1519     0.09859, 0.10343, 0.10842, 0.11356, 0.11885, 0.12429, 0.12988, 0.13563,
1520     0.14152, 0.14757, 0.15376, 0.16011, 0.16661, 0.17325, 0.18005, 0.18699,
1521     0.19407, 0.20130, 0.20867, 0.21618, 0.22382, 0.23161, 0.23952, 0.24757,
1522     0.25574, 0.26404, 0.27246, 0.28100, 0.28965, 0.29841, 0.30729, 0.31626,
1523     0.32533, 0.33450, 0.34376, 0.35311, 0.36253, 0.37204, 0.38161, 0.39126,
1524     0.40096, 0.41072, 0.42054, 0.43040, 0.44030, 0.45023, 0.46020, 0.47019,
1525     0.48020, 0.49022, 0.50025, 0.51028, 0.52031, 0.53033, 0.54033, 0.55031,
1526     0.56026, 0.57019, 0.58007, 0.58991, 0.59970, 0.60944, 0.61912, 0.62873,
1527     0.63827, 0.64774, 0.65713, 0.66643, 0.67564, 0.68476, 0.69377, 0.70269,
1528     0.71150, 0.72019, 0.72877, 0.73723, 0.74557, 0.75378, 0.76186, 0.76981,
1529     0.77762, 0.78530, 0.79283, 0.80022, 0.80747, 0.81457, 0.82151, 0.82831,
1530     0.83496, 0.84145, 0.84779, 0.85398, 0.86001, 0.86588, 0.87160, 0.87716,
1531     0.88257, 0.88782, 0.89291, 0.89785, 0.90264, 0.90728, 0.91176, 0.91610,
1532     0.92028, 0.92432, 0.92822, 0.93197, 0.93558, 0.93906, 0.94240, 0.94560,
1533     0.94867, 0.95162, 0.95444, 0.95713, 0.95971, 0.96217, 0.96451, 0.96674,
1534     0.96887, 0.97089, 0.97281, 0.97463, 0.97635, 0.97799, 0.97953, 0.98099,
1535     0.98236, 0.98366, 0.98488, 0.98602, 0.98710, 0.98811, 0.98905, 0.98994,
1536     0.99076, 0.99153, 0.99225, 0.99291, 0.99353, 0.99411, 0.99464, 0.99513,
1537     0.99558, 0.99600, 0.99639, 0.99674, 0.99706, 0.99736, 0.99763, 0.99788,
1538     0.99811, 0.99831, 0.99850, 0.99867, 0.99882, 0.99895, 0.99908, 0.99919,
1539     0.99929, 0.99938, 0.99946, 0.99953, 0.99959, 0.99965, 0.99969, 0.99974,
1540     0.99978, 0.99981, 0.99984, 0.99986, 0.99988, 0.99990, 0.99992, 0.99993,
1541     0.99994, 0.99995, 0.99996, 0.99997, 0.99998, 0.99998, 0.99998, 0.99999,
1542     0.99999, 0.99999, 0.99999, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000,
1543     1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000,
1544 ];