nihav-mpeg/src/codecs/aac/tables.rs

   1 const SWB_OFFSET_48K_LONG: [usize; 49+1] = [
   2       0,   4,   8,  12,  16,  20,  24,  28,
   3      32,  36,  40,  48,  56,  64,  72,  80,
   4      88,  96, 108, 120, 132, 144, 160, 176,
   5     196, 216, 240, 264, 292, 320, 352, 384,
   6     416, 448, 480, 512, 544, 576, 608, 640,
   7     672, 704, 736, 768, 800, 832, 864, 896,
   8     928, 1024
   9 ];
  10 const SWB_OFFSET_48K_SHORT: [usize; 14+1] = [
  11     0, 4, 8, 12, 16, 20, 28, 36, 44, 56, 68, 80, 96, 112, 128
  12 ];
  13 const SWB_OFFSET_32K_LONG: [usize; 51+1] = [
  14       0,   4,   8,  12,  16,  20,  24,  28,
  15      32,  36,  40,  48,  56,  64,  72,  80,
  16      88,  96, 108, 120, 132, 144, 160, 176,
  17     196, 216, 240, 264, 292, 320, 352, 384,
  18     416, 448, 480, 512, 544, 576, 608, 640,
  19     672, 704, 736, 768, 800, 832, 864, 896,
  20     928, 960, 992, 1024
  21 ];
  22 const SWB_OFFSET_8K_LONG: [usize; 40+1] = [
  23       0,  12,  24,  36,  48,  60,  72,  84,
  24      96, 108, 120, 132, 144, 156, 172, 188,
  25     204, 220, 236, 252, 268, 288, 308, 328,
  26     348, 372, 396, 420, 448, 476, 508, 544,
  27     580, 620, 664, 712, 764, 820, 880, 944,
  28     1024
  29 ];
  30 const SWB_OFFSET_8K_SHORT: [usize; 15+1] = [
  31     0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 60, 72, 88, 108, 128
  32 ];
  33 const SWB_OFFSET_16K_LONG: [usize; 43+1] = [
  34       0,   8,  16,  24,  32,  40,  48,  56,
  35      64,  72,  80,  88, 100, 112, 124, 136,
  36     148, 160, 172, 184, 196, 212, 228, 244,
  37     260, 280, 300, 320, 344, 368, 396, 424,
  38     456, 492, 532, 572, 616, 664, 716, 772,
  39     832, 896, 960, 1024
  40 ];
  41 const SWB_OFFSET_16K_SHORT: [usize; 15+1] = [
  42     0, 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 60, 72, 88, 108, 128
  43 ];
  44 const SWB_OFFSET_24K_LONG: [usize; 47+1] = [
  45       0,   4,   8,  12,  16,  20,  24,  28,
  46      32,  36,  40,  44,  52,  60,  68,  76,
  47      84,  92, 100, 108, 116, 124, 136, 148,
  48     160, 172, 188, 204, 220, 240, 260, 284,
  49     308, 336, 364, 396, 432, 468, 508, 552,
  50     600, 652, 704, 768, 832, 896, 960, 1024
  51 ];
  52 const SWB_OFFSET_24K_SHORT: [usize; 15+1] = [
  53     0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 64, 76, 92, 108, 128
  54 ];
  55 const SWB_OFFSET_64K_LONG: [usize; 47+1] = [
  56       0,   4,   8,  12,  16,  20,  24,  28,
  57      32,  36,  40,  44,  48,  52,  56,  64,
  58      72,  80,  88, 100, 112, 124, 140, 156,
  59     172, 192, 216, 240, 268, 304, 344, 384,
  60     424, 464, 504, 544, 584, 624, 664, 704,
  61     744, 784, 824, 864, 904, 944, 984, 1024
  62 ];
  63 const SWB_OFFSET_64K_SHORT: [usize; 12+1] = [
  64     0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128
  65 ];
  66 const SWB_OFFSET_96K_LONG: [usize; 41+1] = [
  67       0,   4,   8,  12,  16,  20,  24,  28,
  68      32,  36,  40,  44,  48,  52,  56,  64,
  69      72,  80,  88,  96, 108, 120, 132, 144,
  70     156, 172, 188, 212, 240, 276, 320, 384,
  71     448, 512, 576, 640, 704, 768, 832, 896,
  72     960, 1024
  73 ];
  74
  75 #[derive(Clone,Copy)]
  76 pub struct GASubbandInfo {
  77     pub min_srate:     u32,
  78     pub long_bands:    &'static [usize],
  79     pub short_bands:   &'static [usize],
  80 }
  81
  82 impl GASubbandInfo {
  83     pub fn find(srate: u32) -> GASubbandInfo {
  84         for sbi in AAC_SUBBAND_INFO.iter() {
  85             if srate >= sbi.min_srate {
  86                 return *sbi;
  87             }
  88         }
  89         unreachable!("")
  90     }
  91     pub fn find_idx(srate: u32) -> usize {
  92         for (i, sbi) in AAC_SUBBAND_INFO.iter().enumerate() {
  93             if srate >= sbi.min_srate {
  94                 return i;
  95             }
  96         }
  97         unreachable!("")
  98     }
  99 }
 100
 101 pub const AAC_SUBBAND_INFO: [GASubbandInfo; 12] = [
 102     GASubbandInfo { min_srate: 92017, long_bands: &SWB_OFFSET_96K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //96K
 103     GASubbandInfo { min_srate: 75132, long_bands: &SWB_OFFSET_96K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //88.2K
 104     GASubbandInfo { min_srate: 55426, long_bands: &SWB_OFFSET_64K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //64K
 105     GASubbandInfo { min_srate: 46009, long_bands: &SWB_OFFSET_48K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //48K
 106     GASubbandInfo { min_srate: 37566, long_bands: &SWB_OFFSET_48K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //44.1K
 107     GASubbandInfo { min_srate: 27713, long_bands: &SWB_OFFSET_32K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //32K
 108     GASubbandInfo { min_srate: 23004, long_bands: &SWB_OFFSET_24K_LONG, short_bands: &SWB_OFFSET_24K_SHORT }, //24K
 109     GASubbandInfo { min_srate: 18783, long_bands: &SWB_OFFSET_24K_LONG, short_bands: &SWB_OFFSET_24K_SHORT }, //22.05K
 110     GASubbandInfo { min_srate: 13856, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //16K
 111     GASubbandInfo { min_srate: 11502, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //12K
 112     GASubbandInfo { min_srate:  9391, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //11.025K
 113     GASubbandInfo { min_srate:     0, long_bands: &SWB_OFFSET_8K_LONG,  short_bands: &SWB_OFFSET_8K_SHORT  }, //8K
 114 ];
 115
 116 pub const CBRT_TAB: [f32; 1024] = [
 117      0.00000000000000000000,     1.00000000000000000000,
 118      2.51984209978974632951,     4.32674871092222514692,
 119      6.34960420787279789894,     8.54987973338348494669,
 120     10.90272355699283795323,    13.39051827940672370829,
 121     16.00000000000000000000,    18.72075440746713703075,
 122     21.54434690031883721721,    24.46378099626247073259,
 123     27.47314182127996482685,    30.56735094036984736325,
 124     33.74199169845321980556,    36.99318111495705152207,
 125     40.31747359663594127180,    43.71178704119000104200,
 126     47.17334509576013892806,    50.69963132571695247884,
 127     54.28835233189813142998,    57.93740770400353405834,
 128     61.64486527441851665347,    65.40894053658600598618,
 129     69.22797937475560235079,    73.10044345532165163727,
 130     77.02489777859163322491,    81.00000000000000000000,
 131     85.02449121251855054238,    89.09718794488957150508,
 132     93.21697517861576600561,    97.38280022413318313809,
 133    101.59366732596476638327,   105.84863288986227408821,
 134    110.14680124343443505670,   114.48732085660064048617,
 135    118.86938096020656061830,   123.29220851090027062178,
 136    127.75506545836060596244,   132.25724627755250371381,
 137    136.79807573413575914734,   141.37690685569194574577,
 138    145.99311908523089104057,   150.64611659662913933484,
 139    155.33532675434677209529,   160.06019870205282626894,
 140    164.82020206673353832582,   169.61482576651865039408,
 141    174.44357691188540725200,   179.30597979112560434389,
 142    184.20157493201933028622,   189.12991823257566310337,
 143    194.09058015449690863083,   199.08314497371681634792,
 144    204.10721008296945269011,   209.16238534187653901861,
 145    214.24829247050757933085,   219.36456448277788891331,
 146    224.51084515641221133822,   229.68678853652237223860,
 147    234.89205847013181572378,   240.12632816923256494511,
 148    245.38927980018513969113,   250.68060409747268715691,
 149    256.00000000000000000000,   261.34717430828876844414,
 150    266.72184136106455787047,   272.12372272986054586756,
 151    277.55254693037966879699,   283.00804914946197900670,
 152    288.48997098659897735513,   293.99806020902258074661,
 153    299.53207051947419248945,   305.09176133582992811722,
 154    310.67689758182217143506,   316.28724948815596606218,
 155    321.92259240337188045261,   327.58270661385544475227,
 156    333.26737717243751234639,   338.97639373507036181617,
 157    344.70955040510139547588,   350.46664558470023690369,
 158    356.24748183302617593933,   362.05186573075151786620,
 159    367.87960775058269831798,   373.73052213344523844239,
 160    379.60442677002092443080,   385.50114308734617184858,
 161    391.42049594019953172189,   397.36231350702384937148,
 162    403.32642719014482378002,   409.31267152006274646544,
 163    415.32088406360812690827,   421.35090533576482825936,
 164    427.40257871497632601129,   433.47575036176183911002,
 165    439.57026914047943723453,   445.68598654408286118715,
 166    451.82275662172776382183,   457.98043590909143751160,
 167    464.15888336127788923421,   470.35796028818739866912,
 168    476.57753029223648782021,   482.81745920832057938659,
 169    489.07761504591755781262,   495.35786793323600251610,
 170    501.65809006331706535811,   507.97815564200383854506,
 171    514.31794083769662981941,   520.67732373281684917378,
 172    527.05618427690623677486,   533.45440424129194197023,
 173    539.87186717525151688967,   546.30845836361522948115,
 174    552.76406478574624458604,   559.23857507584218167368,
 175    565.73187948450434582522,   572.24386984152355579202,
 176    578.77443951983397081167,   585.32348340058865499255,
 177    591.89089783931282434796,   598.47658063309280506205,
 178    605.08043098876069996084,   611.70234949203662112128,
 179    618.34223807759210601741,   625.00000000000000000000,
 180    631.67553980553766357232,   638.36876330481185599386,
 181    645.07957754617506035597,   651.80789078990435598324,
 182    658.55361248311521501881,   665.31665323538380544696,
 183    672.09692479505252760063,   678.89434002619459701705,
 184    685.70881288621451907474,   692.54025840406228068201,
 185    699.38859265904001667978,   706.25373276018079478853,
 186    713.13559682618000593854,   720.03410396586064910582,
 187    726.94917425915456366424,   733.88072873858238939593,
 188    740.82868937121572754752,   747.79297904110563613885,
 189    754.77352153216222284228,   761.77024151147069871214,
 190    768.78306451302982865267,   775.81191692189926159948,
 191    782.85672595874274425816,   789.91741966475472119892,
 192    796.99392688695829953156,   804.08617726386301105625,
 193    811.19410121147123967046,   818.31762990962259694715,
 194    825.45669528866592656295,   832.61123001644899795861,
 195    839.78116748561631393306,   846.96644180120580445741,
 196    854.16698776853551318295,   861.38274088137170167004,
 197    868.61363731037010287198,   875.85961389178234827331,
 198    883.12060811641987421145,   890.39655811886788240221,
 199    897.68740266694218788475,   904.99308115138203573017,
 200    912.31353357577220569881,   919.64870054668795194525,
 201    926.99852326405654493458,   934.36294351172939189390,
 202    941.74190364825891581901,   949.13534659787456579093,
 203    956.54321584165251919905,   963.96545540887381510030,
 204    971.40200986856583079545,   978.85282432122217951383,
 205    986.31784439069626646659,   993.79701621626389429314,
 206   1001.29028644485045643113,  1008.79760222341839923538,
 207   1016.31891119151077035601,  1023.85416147394680285920,
 208   1031.40330167366561163045,  1038.96628086471420034155,
 209   1046.54304858537609578013,  1054.13355483143703939331,
 210   1061.73775004958427555737,  1069.35558513093608150558,
 211   1076.98701140469828584568,  1084.63198063194462037109,
 212   1092.29044499951784480280,  1099.96235711404867558273,
 213   1107.64766999608963760287,  1115.34633707436104324401,
 214   1123.05831218010638496227,  1130.78354954155450739684,
 215   1138.52200377848600103792,  1146.27362989690133392041,
 216   1154.03838328378830932881,  1161.81621970198650622225,
 217   1169.60709528514642619770,  1177.41096653278113548740,
 218   1185.22779030540825227308,  1193.05752381978019055519,
 219   1200.90012464420063014857,  1208.75555069392523822539,
 220   1216.62376022664472328393,  1224.50471183804835456776,
 221   1232.39836445746613159991,  1240.30467734358783752798,
 222   1248.22361008025725843679,  1256.15512257233989682593,
 223   1264.09917504166255217108,  1272.05572802302318588953,
 224   1280.02474236026952900065,  1288.00617920244493252267,
 225   1296.00000000000000000000,  1304.00616650106857938578,
 226   1312.02464074780672969490,  1320.05538507279331269587,
 227   1328.09836209549089589253,  1336.15353471876568627698,
 228   1344.22086612546524725007,  1352.30031977505278348508,
 229   1360.39185940029680869324,  1368.49544900401504159392,
 230   1376.61105285587140485715,  1384.73863548922502932755,
 231   1392.87816169803019348869,  1401.02959653378615546822,
 232   1409.19290530253585926207,  1417.36805356191252347223,
 233   1425.55500711823314408286,  1433.75373202363796717790,
 234   1441.96419457327500999135,  1450.18636130252873140401,
 235   1458.42019898429197439581,  1466.66567462628032426218,
 236   1474.92275546838804685322,  1483.19140898008479051460,
 237   1491.47160285785225609146,  1499.76330502266005625343,
 238   1508.06648361748000563721,  1516.38110700483809947476,
 239   1524.70714376440345704507,  1533.04456269061352195578,
 240   1541.39333279033482841517,  1549.75342328055865850746,
 241   1558.12480358613093022677,  1566.50744333751567235576,
 242   1574.90131236859145593904,  1583.30638071448016673656,
 243   1591.72261860940751701829,  1600.14999648459470852119,
 244   1608.58848496618067173372,  1617.03805487317431896934,
 245   1625.49867721543626211788,  1633.97032319168945711235,
 246   1642.45296418755824970353,  1650.94657177363530877346,
 247   1659.45111770357594371603,  1667.96657391221931470762,
 248   1676.49291251373605427623,  1685.03010579980182968210,
 249   1693.57812623779638539637,  1702.13694646902761503054,
 250   1710.70653930698022150790,  1719.28687773558853417906,
 251   1727.87793490753306001649,  1736.47968414256035553342,
 252   1745.09209892582581461053,  1753.71515290625897572481,
 253   1762.34881989495096090911,  1770.99307386356366605273,
 254   1779.64788894276033072739,  1788.31323942065712335581,
 255   1796.98909974129538437048,  1805.67544450313417848685,
 256   1814.37224845756281313162,  1823.07948650743298813106,
 257   1831.79713370561024778071,  1840.52516525354441361073,
 258   1849.26355649985868223639,  1858.01228293895707941129,
 259   1866.77132020964996733055,  1875.54064409379730829778,
 260   1884.32023051496939389886,  1893.11005553712475456384,
 261   1901.91009536330496989490,  1910.72032633434610589043,
 262   1919.54072492760651020272,  1928.37126775571070221481,
 263   1937.21193156530909970921,  1946.06269323585332867860,
 264   1954.92352977838686823377,  1963.79441833435078658320,
 265   1972.67533617440432995075,  1981.56626069726012933804,
 266   1990.46716942853379578240,  1999.37804001960767870357,
 267   2008.29885024650856563799,  2017.22957800879910723013,
 268   2026.17020132848275375266,  2035.12069834892199446178,
 269   2044.08104733376969540137,  2053.05122666591333334706,
 270   2062.03121484643192958368,  2071.02099049356548902559,
 271   2080.02053234169675459475,  2089.02981924034509042325,
 272   2098.04883015317231039884,  2107.07754415700027205791,
 273   2116.11594044084005944439,  2125.16399830493258112277,
 274   2134.22169715980041368706,  2143.28901652531072254494,
 275   2152.36593602974909707389,  2161.45243540890413759114,
 276   2170.54849450516263667159,  2179.65409326661519891827,
 277   2188.76921174617214635986,  2197.89383010068955948111,
 278   2207.02792859010530656136,  2216.17148757658491620189,
 279   2225.32448752367715099525,  2234.48690899547914244191,
 280   2243.65873265581094990134,  2252.83993926739940822900,
 281   2262.03050969107113193485,  2271.23042488495454521456,
 282   2280.43966590369080978218,  2289.65821389765352475883,
 283   2298.88605011217707485783,  2308.12315588679350497977,
 284   2317.36951265447780206959,  2326.62510194090146635951,
 285   2335.88990536369425665173,  2345.16390463171399625936,
 286   2354.44708154432432710568,  2363.73941799068030339571,
 287   2373.04089594902171590868,  2382.35149748597404119111,
 288   2391.67120475585691100925,  2401.00000000000000000000,
 289   2410.33786554606622936004,  2419.68478380738218880719,
 290   2429.04073728227567767649,  2438.40570855342027001293,
 291   2447.77968028718680898823,  2457.16263523300173722970,
 292   2466.55455622271217223446,  2475.95542616995763639656,
 293   2485.36522806954835350253,  2494.78394499685002421155,
 294   2504.21156010717499516846,  2513.64805663517973736423,
 295   2523.09341789426855039372,  2532.54762727600341175530,
 296   2542.01066824951988970990,  2551.48252436094904179178,
 297   2560.96317923284522030583,  2570.45261656361970836095,
 298   2579.95082012698011153459,  2589.45777377137543011521,
 299   2598.97346141944673962837,  2608.49786706748340700482,
 300   2618.03097478488477244764,  2627.57276871362722634970,
 301   2637.12323306773661321603,  2646.68235213276589484101,
 302   2656.25011026527800629933,  2665.82649189233383886000,
 303   2675.41148151098528600189,  2685.00506368777328803208,
 304   2694.60722305823081375417,  2704.21794432639071681693,
 305   2713.83721226429840630831,  2723.46501171152927180431,
 306   2733.10132757471080422102,  2742.74614482704935401302,
 307   2752.39944850786146976073,  2762.06122372210976129745,
 308   2771.73145563994323122640,  2781.41012949624202083838,
 309   2791.09723059016651603505,  2800.79274428471076089283,
 310   2810.49665600626012615697,  2820.20895124415318114955,
 311   2829.92961555024771902502,  2839.65863453849088445739,
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