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ImageSharp/src/ImageSharp/Formats/WebP/WebPLookupTables.cs

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// Copyright (c) Six Labors.
// Licensed under the Apache License, Version 2.0.
using System.Collections.Generic;
namespace SixLabors.ImageSharp.Formats.WebP
{
internal static class WebPLookupTables
{
public static readonly Dictionary<int, byte> Abs0;
public static readonly Dictionary<int, byte> Clip1;
public static readonly Dictionary<int, sbyte> Sclip1;
public static readonly Dictionary<int, sbyte> Sclip2;
public static readonly byte[,][] ModesProba = new byte[10, 10][];
/// <summary>
/// Lookup table for small values of log2(int).
/// </summary>
public static readonly float[] Log2Table =
{
0.0000000000000000f, 0.0000000000000000f,
1.0000000000000000f, 1.5849625007211560f,
2.0000000000000000f, 2.3219280948873621f,
2.5849625007211560f, 2.8073549220576041f,
3.0000000000000000f, 3.1699250014423121f,
3.3219280948873621f, 3.4594316186372973f,
3.5849625007211560f, 3.7004397181410921f,
3.8073549220576041f, 3.9068905956085187f,
4.0000000000000000f, 4.0874628412503390f,
4.1699250014423121f, 4.2479275134435852f,
4.3219280948873626f, 4.3923174227787606f,
4.4594316186372973f, 4.5235619560570130f,
4.5849625007211560f, 4.6438561897747243f,
4.7004397181410917f, 4.7548875021634682f,
4.8073549220576037f, 4.8579809951275718f,
4.9068905956085187f, 4.9541963103868749f,
5.0000000000000000f, 5.0443941193584533f,
5.0874628412503390f, 5.1292830169449663f,
5.1699250014423121f, 5.2094533656289501f,
5.2479275134435852f, 5.2854022188622487f,
5.3219280948873626f, 5.3575520046180837f,
5.3923174227787606f, 5.4262647547020979f,
5.4594316186372973f, 5.4918530963296747f,
5.5235619560570130f, 5.5545888516776376f,
5.5849625007211560f, 5.6147098441152083f,
5.6438561897747243f, 5.6724253419714951f,
5.7004397181410917f, 5.7279204545631987f,
5.7548875021634682f, 5.7813597135246599f,
5.8073549220576037f, 5.8328900141647412f,
5.8579809951275718f, 5.8826430493618415f,
5.9068905956085187f, 5.9307373375628866f,
5.9541963103868749f, 5.9772799234999167f,
6.0000000000000000f, 6.0223678130284543f,
6.0443941193584533f, 6.0660891904577720f,
6.0874628412503390f, 6.1085244567781691f,
6.1292830169449663f, 6.1497471195046822f,
6.1699250014423121f, 6.1898245588800175f,
6.2094533656289501f, 6.2288186904958804f,
6.2479275134435852f, 6.2667865406949010f,
6.2854022188622487f, 6.3037807481771030f,
6.3219280948873626f, 6.3398500028846243f,
6.3575520046180837f, 6.3750394313469245f,
6.3923174227787606f, 6.4093909361377017f,
6.4262647547020979f, 6.4429434958487279f,
6.4594316186372973f, 6.4757334309663976f,
6.4918530963296747f, 6.5077946401986963f,
6.5235619560570130f, 6.5391588111080309f,
6.5545888516776376f, 6.5698556083309478f,
6.5849625007211560f, 6.5999128421871278f,
6.6147098441152083f, 6.6293566200796094f,
6.6438561897747243f, 6.6582114827517946f,
6.6724253419714951f, 6.6865005271832185f,
6.7004397181410917f, 6.7142455176661224f,
6.7279204545631987f, 6.7414669864011464f,
6.7548875021634682f, 6.7681843247769259f,
6.7813597135246599f, 6.7944158663501061f,
6.8073549220576037f, 6.8201789624151878f,
6.8328900141647412f, 6.8454900509443747f,
6.8579809951275718f, 6.8703647195834047f,
6.8826430493618415f, 6.8948177633079437f,
6.9068905956085187f, 6.9188632372745946f,
6.9307373375628866f, 6.9425145053392398f,
6.9541963103868749f, 6.9657842846620869f,
6.9772799234999167f, 6.9886846867721654f,
7.0000000000000000f, 7.0112272554232539f,
7.0223678130284543f, 7.0334230015374501f,
7.0443941193584533f, 7.0552824355011898f,
7.0660891904577720f, 7.0768155970508308f,
7.0874628412503390f, 7.0980320829605263f,
7.1085244567781691f, 7.1189410727235076f,
7.1292830169449663f, 7.1395513523987936f,
7.1497471195046822f, 7.1598713367783890f,
7.1699250014423121f, 7.1799090900149344f,
7.1898245588800175f, 7.1996723448363644f,
7.2094533656289501f, 7.2191685204621611f,
7.2288186904958804f, 7.2384047393250785f,
7.2479275134435852f, 7.2573878426926521f,
7.2667865406949010f, 7.2761244052742375f,
7.2854022188622487f, 7.2946207488916270f,
7.3037807481771030f, 7.3128829552843557f,
7.3219280948873626f, 7.3309168781146167f,
7.3398500028846243f, 7.3487281542310771f,
7.3575520046180837f, 7.3663222142458160f,
7.3750394313469245f, 7.3837042924740519f,
7.3923174227787606f, 7.4008794362821843f,
7.4093909361377017f, 7.4178525148858982f,
7.4262647547020979f, 7.4346282276367245f,
7.4429434958487279f, 7.4512111118323289f,
7.4594316186372973f, 7.4676055500829976f,
7.4757334309663976f, 7.4838157772642563f,
7.4918530963296747f, 7.4998458870832056f,
7.5077946401986963f, 7.5156998382840427f,
7.5235619560570130f, 7.5313814605163118f,
7.5391588111080309f, 7.5468944598876364f,
7.5545888516776376f, 7.5622424242210728f,
7.5698556083309478f, 7.5774288280357486f,
7.5849625007211560f, 7.5924570372680806f,
7.5999128421871278f, 7.6073303137496104f,
7.6147098441152083f, 7.6220518194563764f,
7.6293566200796094f, 7.6366246205436487f,
7.6438561897747243f, 7.6510516911789281f,
7.6582114827517946f, 7.6653359171851764f,
7.6724253419714951f, 7.6794800995054464f,
7.6865005271832185f, 7.6934869574993252f,
7.7004397181410917f, 7.7073591320808825f,
7.7142455176661224f, 7.7210991887071855f,
7.7279204545631987f, 7.7347096202258383f,
7.7414669864011464f, 7.7481928495894605f,
7.7548875021634682f, 7.7615512324444795f,
7.7681843247769259f, 7.7747870596011736f,
7.7813597135246599f, 7.7879025593914317f,
7.7944158663501061f, 7.8008998999203047f,
7.8073549220576037f, 7.8137811912170374f,
7.8201789624151878f, 7.8265484872909150f,
7.8328900141647412f, 7.8392037880969436f,
7.8454900509443747f, 7.8517490414160571f,
7.8579809951275718f, 7.8641861446542797f,
7.8703647195834047f, 7.8765169465649993f,
7.8826430493618415f, 7.8887432488982591f,
7.8948177633079437f, 7.9008668079807486f,
7.9068905956085187f, 7.9128893362299619f,
7.9188632372745946f, 7.9248125036057812f,
7.9307373375628866f, 7.9366379390025709f,
7.9425145053392398f, 7.9483672315846778f,
7.9541963103868749f, 7.9600019320680805f,
7.9657842846620869f, 7.9715435539507719f,
7.9772799234999167f, 7.9829935746943103f,
7.9886846867721654f, 7.9943534368588577f
};
public static readonly float[] SLog2Table =
{
0.00000000f, 0.00000000f, 2.00000000f, 4.75488750f,
8.00000000f, 11.60964047f, 15.50977500f, 19.65148445f,
24.00000000f, 28.52932501f, 33.21928095f, 38.05374781f,
43.01955001f, 48.10571634f, 53.30296891f, 58.60335893f,
64.00000000f, 69.48686830f, 75.05865003f, 80.71062276f,
86.43856190f, 92.23866588f, 98.10749561f, 104.04192499f,
110.03910002f, 116.09640474f, 122.21143267f, 128.38196256f,
134.60593782f, 140.88144886f, 147.20671787f, 153.58008562f,
160.00000000f, 166.46500594f, 172.97373660f, 179.52490559f,
186.11730005f, 192.74977453f, 199.42124551f, 206.13068654f,
212.87712380f, 219.65963219f, 226.47733176f, 233.32938445f,
240.21499122f, 247.13338933f, 254.08384998f, 261.06567603f,
268.07820003f, 275.12078236f, 282.19280949f, 289.29369244f,
296.42286534f, 303.57978409f, 310.76392512f, 317.97478424f,
325.21187564f, 332.47473081f, 339.76289772f, 347.07593991f,
354.41343574f, 361.77497759f, 369.16017124f, 376.56863518f,
384.00000000f, 391.45390785f, 398.93001188f, 406.42797576f,
413.94747321f, 421.48818752f, 429.04981119f, 436.63204548f,
444.23460010f, 451.85719280f, 459.49954906f, 467.16140179f,
474.84249102f, 482.54256363f, 490.26137307f, 497.99867911f,
505.75424759f, 513.52785023f, 521.31926438f, 529.12827280f,
536.95466351f, 544.79822957f, 552.65876890f, 560.53608414f,
568.42998244f, 576.34027536f, 584.26677867f, 592.20931226f,
600.16769996f, 608.14176943f, 616.13135206f, 624.13628279f,
632.15640007f, 640.19154569f, 648.24156472f, 656.30630539f,
664.38561898f, 672.47935976f, 680.58738488f, 688.70955430f,
696.84573069f, 704.99577935f, 713.15956818f, 721.33696754f,
729.52785023f, 737.73209140f, 745.94956849f, 754.18016116f,
762.42375127f, 770.68022275f, 778.94946161f, 787.23135586f,
795.52579543f, 803.83267219f, 812.15187982f, 820.48331383f,
828.82687147f, 837.18245171f, 845.54995518f, 853.92928416f,
862.32034249f, 870.72303558f, 879.13727036f, 887.56295522f,
896.00000000f, 904.44831595f, 912.90781569f, 921.37841320f,
929.86002376f, 938.35256392f, 946.85595152f, 955.37010560f,
963.89494641f, 972.43039537f, 980.97637504f, 989.53280911f,
998.09962237f, 1006.67674069f, 1015.26409097f, 1023.86160116f,
1032.46920021f, 1041.08681805f, 1049.71438560f, 1058.35183469f,
1066.99909811f, 1075.65610955f, 1084.32280357f, 1092.99911564f,
1101.68498204f, 1110.38033993f, 1119.08512727f, 1127.79928282f,
1136.52274614f, 1145.25545758f, 1153.99735821f, 1162.74838989f,
1171.50849518f, 1180.27761738f, 1189.05570047f, 1197.84268914f,
1206.63852876f, 1215.44316535f, 1224.25654560f, 1233.07861684f,
1241.90932703f, 1250.74862473f, 1259.59645914f, 1268.45278005f,
1277.31753781f, 1286.19068338f, 1295.07216828f, 1303.96194457f,
1312.85996488f, 1321.76618236f, 1330.68055071f, 1339.60302413f,
1348.53355734f, 1357.47210556f, 1366.41862452f, 1375.37307041f,
1384.33539991f, 1393.30557020f, 1402.28353887f, 1411.26926400f,
1420.26270412f, 1429.26381818f, 1438.27256558f, 1447.28890615f,
1456.31280014f, 1465.34420819f, 1474.38309138f, 1483.42941118f,
1492.48312945f, 1501.54420843f, 1510.61261078f, 1519.68829949f,
1528.77123795f, 1537.86138993f, 1546.95871952f, 1556.06319119f,
1565.17476976f, 1574.29342040f, 1583.41910860f, 1592.55180020f,
1601.69146137f, 1610.83805860f, 1619.99155871f, 1629.15192882f,
1638.31913637f, 1647.49314911f, 1656.67393509f, 1665.86146266f,
1675.05570047f, 1684.25661744f, 1693.46418280f, 1702.67836605f,
1711.89913698f, 1721.12646563f, 1730.36032233f, 1739.60067768f,
1748.84750254f, 1758.10076802f, 1767.36044551f, 1776.62650662f,
1785.89892323f, 1795.17766747f, 1804.46271172f, 1813.75402857f,
1823.05159087f, 1832.35537170f, 1841.66534438f, 1850.98148244f,
1860.30375965f, 1869.63214999f, 1878.96662767f, 1888.30716711f,
1897.65374295f, 1907.00633003f, 1916.36490342f, 1925.72943838f,
1935.09991037f, 1944.47629506f, 1953.85856831f, 1963.24670620f,
1972.64068498f, 1982.04048108f, 1991.44607117f, 2000.85743204f,
2010.27454072f, 2019.69737440f, 2029.12591044f, 2038.56012640f
};
public static readonly int[] CodeToPlane =
{
0x18, 0x07, 0x17, 0x19, 0x28, 0x06, 0x27, 0x29, 0x16, 0x1a,
0x26, 0x2a, 0x38, 0x05, 0x37, 0x39, 0x15, 0x1b, 0x36, 0x3a,
0x25, 0x2b, 0x48, 0x04, 0x47, 0x49, 0x14, 0x1c, 0x35, 0x3b,
0x46, 0x4a, 0x24, 0x2c, 0x58, 0x45, 0x4b, 0x34, 0x3c, 0x03,
0x57, 0x59, 0x13, 0x1d, 0x56, 0x5a, 0x23, 0x2d, 0x44, 0x4c,
0x55, 0x5b, 0x33, 0x3d, 0x68, 0x02, 0x67, 0x69, 0x12, 0x1e,
0x66, 0x6a, 0x22, 0x2e, 0x54, 0x5c, 0x43, 0x4d, 0x65, 0x6b,
0x32, 0x3e, 0x78, 0x01, 0x77, 0x79, 0x53, 0x5d, 0x11, 0x1f,
0x64, 0x6c, 0x42, 0x4e, 0x76, 0x7a, 0x21, 0x2f, 0x75, 0x7b,
0x31, 0x3f, 0x63, 0x6d, 0x52, 0x5e, 0x00, 0x74, 0x7c, 0x41,
0x4f, 0x10, 0x20, 0x62, 0x6e, 0x30, 0x73, 0x7d, 0x51, 0x5f,
0x40, 0x72, 0x7e, 0x61, 0x6f, 0x50, 0x71, 0x7f, 0x60, 0x70
};
public static readonly uint[] PlaneToCodeLut = {
96, 73, 55, 39, 23, 13, 5, 1, 255, 255, 255, 255, 255, 255, 255, 255,
101, 78, 58, 42, 26, 16, 8, 2, 0, 3, 9, 17, 27, 43, 59, 79,
102, 86, 62, 46, 32, 20, 10, 6, 4, 7, 11, 21, 33, 47, 63, 87,
105, 90, 70, 52, 37, 28, 18, 14, 12, 15, 19, 29, 38, 53, 71, 91,
110, 99, 82, 66, 48, 35, 30, 24, 22, 25, 31, 36, 49, 67, 83, 100,
115, 108, 94, 76, 64, 50, 44, 40, 34, 41, 45, 51, 65, 77, 95, 109,
118, 113, 103, 92, 80, 68, 60, 56, 54, 57, 61, 69, 81, 93, 104, 114,
119, 116, 111, 106, 97, 88, 84, 74, 72, 75, 85, 89, 98, 107, 112, 117
};
// 31 ^ clz(i)
public static readonly byte[] LogTable8bit =
{
0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
};
// Paragraph 14.1
public static readonly int[] DcTable =
{
4, 5, 6, 7, 8, 9, 10, 10,
11, 12, 13, 14, 15, 16, 17, 17,
18, 19, 20, 20, 21, 21, 22, 22,
23, 23, 24, 25, 25, 26, 27, 28,
29, 30, 31, 32, 33, 34, 35, 36,
37, 37, 38, 39, 40, 41, 42, 43,
44, 45, 46, 46, 47, 48, 49, 50,
51, 52, 53, 54, 55, 56, 57, 58,
59, 60, 61, 62, 63, 64, 65, 66,
67, 68, 69, 70, 71, 72, 73, 74,
75, 76, 76, 77, 78, 79, 80, 81,
82, 83, 84, 85, 86, 87, 88, 89,
91, 93, 95, 96, 98, 100, 101, 102,
104, 106, 108, 110, 112, 114, 116, 118,
122, 124, 126, 128, 130, 132, 134, 136,
138, 140, 143, 145, 148, 151, 154, 157
};
// Paragraph 14.1
public static readonly int[] AcTable =
{
4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27,
28, 29, 30, 31, 32, 33, 34, 35,
36, 37, 38, 39, 40, 41, 42, 43,
44, 45, 46, 47, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 58, 60,
62, 64, 66, 68, 70, 72, 74, 76,
78, 80, 82, 84, 86, 88, 90, 92,
94, 96, 98, 100, 102, 104, 106, 108,
110, 112, 114, 116, 119, 122, 125, 128,
131, 134, 137, 140, 143, 146, 149, 152,
155, 158, 161, 164, 167, 170, 173, 177,
181, 185, 189, 193, 197, 201, 205, 209,
213, 217, 221, 225, 229, 234, 239, 245,
249, 254, 259, 264, 269, 274, 279, 284
};
// Paragraph 13
public static readonly byte[,,,] CoeffsUpdateProba =
{
{
{
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 },
{ 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
}
},
{
{
{ 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 },
{ 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 }
},
{
{ 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
}
},
{
{
{ 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 },
{ 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 }
},
{
{ 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
}
},
{
{
{ 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 },
{ 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
}
}
};
// Paragraph 13.5: Default Token Probability Table.
public static readonly byte[,,,] DefaultCoeffsProba =
{
{
{
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
},
{
{ 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 },
{ 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 },
{ 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 }
},
{
{ 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 },
{ 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 },
{ 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 },
},
{
{ 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 },
{ 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 },
{ 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 },
},
{
{ 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 },
{ 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 },
{ 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 }
},
{
{ 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 },
{ 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 },
{ 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 }
},
{
{ 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 },
{ 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 },
{ 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 }
},
{
{ 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
}
},
{
{
{ 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 },
{ 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 },
{ 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 }
},
{
{ 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 },
{ 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 },
{ 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 }
},
{
{ 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 },
{ 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 },
{ 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 }
},
{
{ 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 },
{ 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 },
{ 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 }
},
{
{ 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 },
{ 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 },
{ 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 }
},
{
{ 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 },
{ 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 },
{ 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 }
},
{
{ 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 },
{ 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 },
{ 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 }
},
{
{ 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 },
{ 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 }
}
},
{
{
{ 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 },
{ 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 },
{ 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 }
},
{
{ 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 },
{ 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 },
{ 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 }
},
{
{ 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 },
{ 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 },
{ 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 }
},
{
{ 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 },
{ 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 }
},
{
{ 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 },
{ 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
},
{
{ 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
},
{
{ 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
},
{
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
}
},
{
{
{ 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 },
{ 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 },
{ 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 }
},
{
{ 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 },
{ 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 },
{ 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 }
},
{
{ 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 },
{ 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 },
{ 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 }
},
{
{ 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 },
{ 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 },
{ 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 }
},
{
{ 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 },
{ 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 },
{ 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 }
},
{
{ 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 },
{ 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 },
{ 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 }
},
{
{ 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 },
{ 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 },
{ 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 }
},
{
{ 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
}
}
};
public static readonly (int code, int extraBits)[] PrefixEncodeCode = new (int code, int extraBits)[]
{
(0, 0), (0, 0), (1, 0), (2, 0), (3, 0), (4, 1), (4, 1), (5, 1),
(5, 1), (6, 2), (6, 2), (6, 2), (6, 2), (7, 2), (7, 2), (7, 2),
(7, 2), (8, 3), (8, 3), (8, 3), (8, 3), (8, 3), (8, 3), (8, 3),
(8, 3), (9, 3), (9, 3), (9, 3), (9, 3), (9, 3), (9, 3), (9, 3),
(9, 3), (10, 4), (10, 4), (10, 4), (10, 4), (10, 4), (10, 4), (10, 4),
(10, 4), (10, 4), (10, 4), (10, 4), (10, 4), (10, 4), (10, 4), (10, 4),
(10, 4), (11, 4), (11, 4), (11, 4), (11, 4), (11, 4), (11, 4), (11, 4),
(11, 4), (11, 4), (11, 4), (11, 4), (11, 4), (11, 4), (11, 4), (11, 4),
(11, 4), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5),
(12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5),
(12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5),
(12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5), (12, 5),
(12, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5),
(13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5),
(13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5),
(13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5), (13, 5),
(13, 5), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6),
(14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6),
(14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6),
(14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6),
(14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6),
(14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6),
(14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6),
(14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6), (14, 6),
(14, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6),
(15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6),
(15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6),
(15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6),
(15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6),
(15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6),
(15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6),
(15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6), (15, 6),
(15, 6), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7), (16, 7),
(16, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
(17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7), (17, 7),
};
public static readonly byte[] PrefixEncodeExtraBitsValue =
{
0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 2, 3, 0, 1, 2, 3,
0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122,
123, 124, 125, 126, 127, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41,
42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117,
118, 119, 120, 121, 122, 123, 124, 125, 126
};
static WebPLookupTables()
{
Abs0 = new Dictionary<int, byte>();
for (int i = -255; i <= 255; ++i)
{
Abs0[i] = (byte)((i < 0) ? -i : i);
}
Clip1 = new Dictionary<int, byte>();
for (int i = -255; i <= 255 + 255; ++i)
{
Clip1[i] = (byte)((i < 0) ? 0 : (i > 255) ? 255 : i);
}
Sclip1 = new Dictionary<int, sbyte>();
for (int i = -1020; i <= 1020; ++i)
{
Sclip1[i] = (sbyte)((i < -128) ? -128 : (i > 127) ? 127 : i);
}
Sclip2 = new Dictionary<int, sbyte>();
for (int i = -112; i <= 112; ++i)
{
Sclip2[i] = (sbyte)((i < -16) ? -16 : (i > 15) ? 15 : i);
}
InitializeModesProbabilities();
}
private static void InitializeModesProbabilities()
{
// Paragraph 11.5
ModesProba[0, 0] = new byte[] { 231, 120, 48, 89, 115, 113, 120, 152, 112 };
ModesProba[0, 1] = new byte[] { 152, 179, 64, 126, 170, 118, 46, 70, 95 };
ModesProba[0, 2] = new byte[] { 175, 69, 143, 80, 85, 82, 72, 155, 103 };
ModesProba[0, 3] = new byte[] { 56, 58, 10, 171, 218, 189, 17, 13, 152 };
ModesProba[0, 4] = new byte[] { 114, 26, 17, 163, 44, 195, 21, 10, 173 };
ModesProba[0, 5] = new byte[] { 121, 24, 80, 195, 26, 62, 44, 64, 85 };
ModesProba[0, 6] = new byte[] { 144, 71, 10, 38, 171, 213, 144, 34, 26 };
ModesProba[0, 7] = new byte[] { 170, 46, 55, 19, 136, 160, 33, 206, 71 };
ModesProba[0, 8] = new byte[] { 63, 20, 8, 114, 114, 208, 12, 9, 226 };
ModesProba[0, 9] = new byte[] { 81, 40, 11, 96, 182, 84, 29, 16, 36 };
ModesProba[1, 0] = new byte[] { 134, 183, 89, 137, 98, 101, 106, 165, 148 };
ModesProba[1, 1] = new byte[] { 72, 187, 100, 130, 157, 111, 32, 75, 80 };
ModesProba[1, 2] = new byte[] { 66, 102, 167, 99, 74, 62, 40, 234, 128 };
ModesProba[1, 3] = new byte[] { 41, 53, 9, 178, 241, 141, 26, 8, 107 };
ModesProba[1, 4] = new byte[] { 74, 43, 26, 146, 73, 166, 49, 23, 157 };
ModesProba[1, 5] = new byte[] { 65, 38, 105, 160, 51, 52, 31, 115, 128 };
ModesProba[1, 6] = new byte[] { 104, 79, 12, 27, 217, 255, 87, 17, 7 };
ModesProba[1, 7] = new byte[] { 87, 68, 71, 44, 114, 51, 15, 186, 23 };
ModesProba[1, 8] = new byte[] { 47, 41, 14, 110, 182, 183, 21, 17, 194 };
ModesProba[1, 9] = new byte[] { 66, 45, 25, 102, 197, 189, 23, 18, 22 };
ModesProba[2, 0] = new byte[] { 88, 88, 147, 150, 42, 46, 45, 196, 205 };
ModesProba[2, 1] = new byte[] { 43, 97, 183, 117, 85, 38, 35, 179, 61 };
ModesProba[2, 2] = new byte[] { 39, 53, 200, 87, 26, 21, 43, 232, 171 };
ModesProba[2, 3] = new byte[] { 56, 34, 51, 104, 114, 102, 29, 93, 77 };
ModesProba[2, 4] = new byte[] { 39, 28, 85, 171, 58, 165, 90, 98, 64 };
ModesProba[2, 5] = new byte[] { 34, 22, 116, 206, 23, 34, 43, 166, 73 };
ModesProba[2, 6] = new byte[] { 107, 54, 32, 26, 51, 1, 81, 43, 31 };
ModesProba[2, 7] = new byte[] { 68, 25, 106, 22, 64, 171, 36, 225, 114 };
ModesProba[2, 8] = new byte[] { 34, 19, 21, 102, 132, 188, 16, 76, 124 };
ModesProba[2, 9] = new byte[] { 62, 18, 78, 95, 85, 57, 50, 48, 51 };
ModesProba[3, 0] = new byte[] { 193, 101, 35, 159, 215, 111, 89, 46, 111 };
ModesProba[3, 1] = new byte[] { 60, 148, 31, 172, 219, 228, 21, 18, 111 };
ModesProba[3, 2] = new byte[] { 112, 113, 77, 85, 179, 255, 38, 120, 114 };
ModesProba[3, 3] = new byte[] { 40, 42, 1, 196, 245, 209, 10, 25, 109 };
ModesProba[3, 4] = new byte[] { 88, 43, 29, 140, 166, 213, 37, 43, 154 };
ModesProba[3, 5] = new byte[] { 61, 63, 30, 155, 67, 45, 68, 1, 209 };
ModesProba[3, 6] = new byte[] { 100, 80, 8, 43, 154, 1, 51, 26, 71 };
ModesProba[3, 7] = new byte[] { 142, 78, 78, 16, 255, 128, 34, 197, 171 };
ModesProba[3, 8] = new byte[] { 41, 40, 5, 102, 211, 183, 4, 1, 221 };
ModesProba[3, 9] = new byte[] { 51, 50, 17, 168, 209, 192, 23, 25, 82 };
ModesProba[4, 0] = new byte[] { 138, 31, 36, 171, 27, 166, 38, 44, 229 };
ModesProba[4, 1] = new byte[] { 67, 87, 58, 169, 82, 115, 26, 59, 179 };
ModesProba[4, 2] = new byte[] { 63, 59, 90, 180, 59, 166, 93, 73, 154 };
ModesProba[4, 3] = new byte[] { 40, 40, 21, 116, 143, 209, 34, 39, 175 };
ModesProba[4, 4] = new byte[] { 47, 15, 16, 183, 34, 223, 49, 45, 183 };
ModesProba[4, 5] = new byte[] { 46, 17, 33, 183, 6, 98, 15, 32, 183 };
ModesProba[4, 6] = new byte[] { 57, 46, 22, 24, 128, 1, 54, 17, 37 };
ModesProba[4, 7] = new byte[] { 65, 32, 73, 115, 28, 128, 23, 128, 205 };
ModesProba[4, 8] = new byte[] { 40, 3, 9, 115, 51, 192, 18, 6, 223 };
ModesProba[4, 9] = new byte[] { 87, 37, 9, 115, 59, 77, 64, 21, 47 };
ModesProba[5, 0] = new byte[] { 104, 55, 44, 218, 9, 54, 53, 130, 226 };
ModesProba[5, 1] = new byte[] { 64, 90, 70, 205, 40, 41, 23, 26, 57 };
ModesProba[5, 2] = new byte[] { 54, 57, 112, 184, 5, 41, 38, 166, 213 };
ModesProba[5, 3] = new byte[] { 30, 34, 26, 133, 152, 116, 10, 32, 134 };
ModesProba[5, 4] = new byte[] { 39, 19, 53, 221, 26, 114, 32, 73, 255 };
ModesProba[5, 5] = new byte[] { 31, 9, 65, 234, 2, 15, 1, 118, 73 };
ModesProba[5, 6] = new byte[] { 75, 32, 12, 51, 192, 255, 160, 43, 51 };
ModesProba[5, 7] = new byte[] { 88, 31, 35, 67, 102, 85, 55, 186, 85 };
ModesProba[5, 8] = new byte[] { 56, 21, 23, 111, 59, 205, 45, 37, 192 };
ModesProba[5, 9] = new byte[] { 55, 38, 70, 124, 73, 102, 1, 34, 98 };
ModesProba[6, 0] = new byte[] { 125, 98, 42, 88, 104, 85, 117, 175, 82 };
ModesProba[6, 1] = new byte[] { 95, 84, 53, 89, 128, 100, 113, 101, 45 };
ModesProba[6, 2] = new byte[] { 75, 79, 123, 47, 51, 128, 81, 171, 1 };
ModesProba[6, 3] = new byte[] { 57, 17, 5, 71, 102, 57, 53, 41, 49 };
ModesProba[6, 4] = new byte[] { 38, 33, 13, 121, 57, 73, 26, 1, 85 };
ModesProba[6, 5] = new byte[] { 41, 10, 67, 138, 77, 110, 90, 47, 114 };
ModesProba[6, 6] = new byte[] { 115, 21, 2, 10, 102, 255, 166, 23, 6 };
ModesProba[6, 7] = new byte[] { 101, 29, 16, 10, 85, 128, 101, 196, 26 };
ModesProba[6, 8] = new byte[] { 57, 18, 10, 102, 102, 213, 34, 20, 43 };
ModesProba[6, 9] = new byte[] { 117, 20, 15, 36, 163, 128, 68, 1, 26 };
ModesProba[7, 0] = new byte[] { 102, 61, 71, 37, 34, 53, 31, 243, 192 };
ModesProba[7, 1] = new byte[] { 69, 60, 71, 38, 73, 119, 28, 222, 37 };
ModesProba[7, 2] = new byte[] { 68, 45, 128, 34, 1, 47, 11, 245, 171 };
ModesProba[7, 3] = new byte[] { 62, 17, 19, 70, 146, 85, 55, 62, 70 };
ModesProba[7, 4] = new byte[] { 37, 43, 37, 154, 100, 163, 85, 160, 1 };
ModesProba[7, 5] = new byte[] { 63, 9, 92, 136, 28, 64, 32, 201, 85 };
ModesProba[7, 6] = new byte[] { 75, 15, 9, 9, 64, 255, 184, 119, 16 };
ModesProba[7, 7] = new byte[] { 86, 6, 28, 5, 64, 255, 25, 248, 1 };
ModesProba[7, 8] = new byte[] { 56, 8, 17, 132, 137, 255, 55, 116, 128 };
ModesProba[7, 9] = new byte[] { 58, 15, 20, 82, 135, 57, 26, 121, 40 };
ModesProba[8, 0] = new byte[] { 164, 50, 31, 137, 154, 133, 25, 35, 218 };
ModesProba[8, 1] = new byte[] { 51, 103, 44, 131, 131, 123, 31, 6, 158 };
ModesProba[8, 2] = new byte[] { 86, 40, 64, 135, 148, 224, 45, 183, 128 };
ModesProba[8, 3] = new byte[] { 22, 26, 17, 131, 240, 154, 14, 1, 209 };
ModesProba[8, 4] = new byte[] { 45, 16, 21, 91, 64, 222, 7, 1, 197 };
ModesProba[8, 5] = new byte[] { 56, 21, 39, 155, 60, 138, 23, 102, 213 };
ModesProba[8, 6] = new byte[] { 83, 12, 13, 54, 192, 255, 68, 47, 28 };
ModesProba[8, 7] = new byte[] { 85, 26, 85, 85, 128, 128, 32, 146, 171 };
ModesProba[8, 8] = new byte[] { 18, 11, 7, 63, 144, 171, 4, 4, 246 };
ModesProba[8, 9] = new byte[] { 35, 27, 10, 146, 174, 171, 12, 26, 128 };
ModesProba[9, 0] = new byte[] { 190, 80, 35, 99, 180, 80, 126, 54, 45 };
ModesProba[9, 1] = new byte[] { 85, 126, 47, 87, 176, 51, 41, 20, 32 };
ModesProba[9, 2] = new byte[] { 101, 75, 128, 139, 118, 146, 116, 128, 85 };
ModesProba[9, 3] = new byte[] { 56, 41, 15, 176, 236, 85, 37, 9, 62 };
ModesProba[9, 4] = new byte[] { 71, 30, 17, 119, 118, 255, 17, 18, 138 };
ModesProba[9, 5] = new byte[] { 101, 38, 60, 138, 55, 70, 43, 26, 142 };
ModesProba[9, 6] = new byte[] { 146, 36, 19, 30, 171, 255, 97, 27, 20 };
ModesProba[9, 7] = new byte[] { 138, 45, 61, 62, 219, 1, 81, 188, 64 };
ModesProba[9, 8] = new byte[] { 32, 41, 20, 117, 151, 142, 20, 21, 163 };
ModesProba[9, 9] = new byte[] { 112, 19, 12, 61, 195, 128, 48, 4, 24 };
}
}
}