annotate ffmpeg/libavcodec/ra144.c @ 13:844d341cf643 tip

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/*
 * Real Audio 1.0 (14.4K)
 * Copyright (c) 2003 the ffmpeg project
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <stdint.h>
#include "avcodec.h"
#include "celp_filters.h"
#include "mathops.h"
#include "ra144.h"

const int16_t ff_gain_val_tab[256][3] = {
    { 541, 956,  768}, { 877, 581,  568}, { 675,1574,  635}, {1248,1464,  668},
    {1246, 839, 1394}, {2560,1386,  991}, { 925, 687,  608}, {2208, 797, 1144},
    { 535, 832,  799}, { 762, 605, 1154}, { 832,1122, 1003}, {1180, 687, 1176},
    {1292, 901,  732}, {1656, 689,  896}, {1750,1248,  848}, {2284, 942, 1022},
    { 824,1472,  643}, { 517, 765,  512}, { 562,1816, 1522}, { 694,1826, 2700},
    { 704, 524,  672}, {1442, 757, 2232}, { 884, 551, 1266}, {2232,1007, 1692},
    { 932, 746,  777}, {1132, 822,  926}, {1226, 771,  611}, {2948,1342, 1008},
    {1302, 594, 1158}, {1602, 636, 1128}, {3408, 910, 1438}, {1996, 614,  575},
    { 665, 935,  628}, { 631,1192,  829}, { 644, 926, 1052}, { 879, 988, 1226},
    { 941,2768, 2772}, { 565,1344, 2304}, { 547, 628,  740}, { 639, 532, 1074},
    { 955,1208,  598}, {1124,1160,  900}, {1206, 899, 1242}, { 746, 533,  624},
    {1458,1028,  735}, {1706,1102,  692}, {1898,1018, 1004}, {2176, 988,  735},
    {1578, 782, 1642}, { 897, 516,  754}, {2068, 702, 1656}, {2344, 818, 1526},
    { 907, 652,  592}, {1056, 652,  642}, {2124,1416,  780}, {2664,1250,  727},
    {1894, 727, 1108}, {2196, 657,  981}, {4840, 920, 1704}, {4992,1238,  983},
    {2420, 909, 1094}, {2760, 935, 1032}, {2800, 612,  853}, {3068, 832,  574},
    { 523,1796,  923}, { 722,1916, 1382}, {1226,1542,  928}, { 758, 757,  584},
    { 512,1134,  577}, { 615,1276,  698}, { 574,2568, 2356}, { 993,2728, 3512},
    { 539, 890,  913}, { 694, 928, 1088}, { 805, 600, 1360}, {2160, 951, 3128},
    { 816, 950,  590}, { 955, 847,  811}, {1094, 883,  556}, {1304, 888,  604},
    { 863,1170,  855}, {1023, 997, 1032}, { 932,1228, 1280}, { 627, 564,  573},
    { 876, 900, 1448}, {1030, 857, 1792}, {1294, 953, 1758}, {1612, 854, 1714},
    {1090,1166,  631}, {1314,1202,  751}, {1480, 905,  795}, {1682,1016,  568},
    {1494,1178,  983}, { 878, 613,  526}, {1728,1446,  779}, {2136,1348,  774},
    { 950, 649,  939}, {1180, 703,  899}, {1236, 527, 1158}, {1450, 647,  972},
    {1282, 647,  707}, {1460, 663,  644}, {1614, 572,  578}, {3516,1222,  821},
    {2668, 729, 1682}, {3128, 585, 1502}, {3208, 733,  976}, {6800, 871, 1416},
    {3480, 743, 1408}, {3764, 899, 1170}, {3772, 632,  875}, {4092, 732,  638},
    {3112, 753, 2620}, {3372, 945, 1890}, {3768, 969, 2288}, {2016, 559,  854},
    {1736, 729,  787}, {1940, 686,  547}, {2140, 635,  674}, {4480,1272,  828},
    {3976, 592, 1666}, {4384, 621, 1388}, {4400, 801,  955}, {4656, 522,  646},
    {4848, 625, 1636}, {4984, 591,  874}, {5352, 535, 1001}, {11216,938, 1184},
    { 925,3280, 1476}, { 735,1580, 1088}, {1150,1576,  674}, { 655, 783,  528},
    { 527,2052, 1354}, { 782,1704, 1880}, { 578, 910, 1026}, { 692, 882, 1468},
    { 586, 683,  715}, { 739, 609,  717}, { 778, 773,  697}, { 922, 785,  813},
    { 766, 651,  984}, { 978, 596, 1030}, {1070, 757, 1080}, {1324, 687, 1178},
    {1108,2144,  979}, { 723, 982,  690}, { 936, 956,  527}, {1180,1002,  547},
    { 517,1306,  825}, { 832,1184,  974}, {1024, 957,  903}, {1262,1090,  906},
    {1028, 720,  649}, {1192, 679,  694}, {2468,1480,  979}, {2844,1370,  877},
    {1310, 835,  848}, {1508, 839,  698}, {1742,1030,  769}, {1910, 852,  573},
    {1280, 859, 1174}, {1584, 863, 1108}, {1686, 708, 1364}, {1942, 768, 1104},
    { 891, 536,  690}, {1016, 560,  663}, {2172, 870, 1348}, {2404, 999, 1170},
    {1890, 966,  889}, {2116, 912,  777}, {2296,1020,  714}, {4872,1844,  932},
    {2392, 778,  929}, {2604, 772,  744}, {2764, 957,  722}, {5832,1532,  984},
    {2188, 519, 1264}, {2332, 532,  922}, {5064, 995, 2412}, {2708, 571,  874},
    {2408, 545,  666}, {5016,1084,  875}, {5376, 983, 1196}, {5536, 979,  730},
    {5344, 634, 1744}, {5688, 706, 1348}, {5912, 977, 1190}, {6072, 905,  763},
    {6048, 582, 1526}, {11968,1013,1816}, {12864,937, 1900}, {12560,1086, 998},
    {1998, 684, 1884}, {2504, 633, 1992}, {1252, 567,  835}, {1478, 571,  973},
    {2620, 769, 1414}, {2808, 952, 1142}, {2908, 712, 1028}, {2976, 686,  741},
    {1462, 552,  714}, {3296, 991, 1452}, {1590, 615,  544}, {3480,1150,  824},
    {3212, 832,  923}, {3276, 839,  531}, {3548, 786,  852}, {3732, 764,  570},
    {5728, 906, 2616}, {6272, 804, 2252}, {3096, 535,  876}, {3228, 598,  649},
    {6536, 759, 1436}, {6648, 993,  846}, {6864, 567, 1210},{14016,1012, 1302},
    {3408, 548, 1098}, {7160,1008, 1742}, {7136,1000, 1182}, {7480,1032,  836},
    {7448, 612, 1552}, {7744, 614,  816}, {8384, 777, 1438}, {8784, 694,  786},
    { 882,1508, 1068}, { 597, 837,  766}, {1270, 954, 1408}, { 803, 550,  798},
    {1398,1308,  798}, {1848,1534,  738}, { 970, 675,  608}, {1264, 706,  684},
    {1716, 767, 1126}, {2108, 765, 1404}, {2236, 924, 1003}, {2472,1048,  611},
    { 999, 942,  963}, {1094, 857,  935}, {2936, 926, 1138}, {1934, 746,  551},
    {3336, 633, 1762}, {3764, 701, 1454}, {1890, 564,  636}, {4096,1126,  793},
    {3936, 556, 1140}, {3936, 540,  740}, {4216, 764,  874}, {8480,1328, 1014},
    {2184, 515, 1042}, {4432, 934, 1344}, {4784, 945, 1112}, {5016,1062,  733},
    {9216,1020, 2028}, {9968, 924, 1188}, {5424, 909, 1206}, {6512, 744, 1086}
};

const uint8_t ff_gain_exp_tab[256] = {
   15, 15, 15, 15, 15, 16, 14, 15, 14, 14, 14, 14, 14, 14, 14, 14,
   14, 13, 14, 14, 13, 14, 13, 14, 13, 13, 13, 14, 13, 13, 14, 13,
   13, 13, 13, 13, 14, 13, 12, 12, 13, 13, 13, 12, 13, 13, 13, 13,
   13, 12, 13, 13, 12, 12, 13, 13, 13, 13, 14, 14, 13, 13, 13, 13,
   13, 13, 13, 12, 12, 12, 13, 13, 12, 12, 12, 13, 12, 12, 12, 12,
   12, 12, 12, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 12, 12,
   12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 13, 13, 13, 13,
   13, 13, 13, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14,
   13, 12, 12, 11, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
   12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 11, 11, 11, 11,
   12, 12, 12, 12, 11, 11, 12, 12, 12, 12, 12, 13, 12, 12, 12, 13,
   12, 12, 13, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14,
   12, 12, 11, 11, 12, 12, 12, 12, 11, 12, 11, 12, 12, 12, 12, 12,
   13, 13, 12, 12, 13, 13, 13, 14, 12, 13, 13, 13, 13, 13, 13, 13,
   11, 10, 11, 10, 11, 11, 10, 10, 11, 11, 11, 11, 10,  9, 11, 10,
   12, 12, 11, 12, 12, 12, 12, 13, 11, 12, 12, 12, 13, 13, 12, 12
};

const int8_t ff_cb1_vects[128][40]={
    {
     38,  -4,  15,  -4,  14, -13,  12, -11,  -2,  -6,
     -6, -11, -45, -16, -11, -13,  -7,   6, -12,   4,
    -20,   3, -16,  12,  -1,  12,  46,  24,   0,  33,
     -3,   9, -12, -12,  -8,  -7,  17,  -6,   0,  -2,
    }, {
     60, -16,   3, -22,  10, -32,   0, -28, -17, -18,
     -3, -25, -37, -23, -10,   3,   2,   3,   0,   3,
    -14,   0, -14,  -1,   0,   2,  32,   9,  -1,  25,
      7,  13,  -5,  13,   8,   1,   2,   8, -10,   6,
    }, {
     27, -12,  28,  -2,   6,  -7,  15,   9, -11,   1,
    -13, -11, -40,   4, -29, -14, -19,  -5, -23,  -8,
    -30, -13, -17,   0, -14,  12,  34,  20,  -2,  25,
      2, -16,  -4, -12,  15,  16,  29,   7,  24,  10,
    }, {
     49, -24,  16, -20,   2, -26,   2,  -7, -25, -10,
    -11, -25, -32,  -3, -27,   2,  -8,  -8, -11,  -9,
    -24, -17, -16, -14, -13,   2,  20,   5,  -4,  17,
     14, -12,   3,  13,  33,  25,  14,  23,  15,  19,
    }, {
     46,  -6,  21,   8,  -2, -16,  -5,  -8, -11,   4,
      8,  15, -24,   4,  -2, -26,  -3, -16, -16, -14,
     -9,  -2,  -1,   4,  19,   7,  36,  17,   9,  13,
      0,  31,  -5, -12,   7,  -8,  11, -15, -13,  -4,
    }, {
     68, -18,   9,  -9,  -6, -35, -18, -25, -26,  -7,
     10,   1, -16,  -3,  -1,  -9,   6, -19,  -4, -15,
     -4,  -6,   0,  -8,  20,  -2,  23,   2,   7,   5,
     12,  35,   1,  13,  24,   0,  -3,   0, -22,   4,
    }, {
     35, -14,  34,  10, -10, -10,  -1,  12, -20,  12,
      0,  15, -18,  24, -20, -27, -14, -28, -27, -27,
    -20, -19,  -2,  -8,   5,   7,  25,  13,   5,   5,
      6,   5,   2, -12,  31,  15,  23,  -1,  12,   8,
    }, {
     57, -26,  22,  -7, -14, -28, -14,  -3, -35,   0,
      3,   1, -11,  16, -18, -10,  -4, -31, -15, -28,
    -14, -23,  -1, -21,   7,  -2,  11,  -1,   3,  -1,
     18,   9,  10,  13,  49,  24,   8,  14,   2,  16,
    }, {
     25,  15,  22,  11,  18,   4,  15, -22,   8,  -2,
    -17,  -9, -48, -20, -30, -17, -16,  11,  -1,  16,
      2,  10,  -5,  26,  -2,  -4,  22,   0,   2,  10,
     -6,  13, -14,  10, -23,   0,  10,  -2,   1,   0,
    }, {
     47,   3,  11,  -6,  15, -13,   2, -38,  -6, -13,
    -15, -22, -40, -28, -28,   0,  -5,   8,  10,  15,
      7,   7,  -4,  13,  -1, -14,   9, -14,   0,   2,
      4,  18,  -7,  36,  -6,   8,  -3,  13,  -7,   8,
    }, {
     14,   7,  36,  13,  10,  10,  18,   0,   0,   5,
    -25,  -8, -43,   0, -48, -18, -27,   0, -12,   3,
     -7,  -6,  -7,  13, -15,  -5,  11,  -3,   0,   2,
      0, -12,  -6,  10,   0,  23,  22,  11,  26,  12,
    }, {
     36,  -5,  24,  -4,   7,  -7,   6, -17, -14,  -5,
    -22, -22, -35,  -8, -46,  -1, -17,  -3,   0,   2,
     -2, -10,  -5,   0, -14, -15,  -2, -18,  -2,  -4,
     11,  -7,   1,  36,  18,  32,   7,  27,  17,  20,
    }, {
     33,  13,  29,  24,   1,   1,  -2, -18,   0,   9,
     -3,  17, -27,   0, -21, -30, -12, -11,  -5,  -2,
     12,   4,   9,  19,  18,  -9,  13,  -6,  11,  -8,
     -2,  35,  -8,  10,  -7,  -1,   4, -11, -10,  -2,
    }, {
     55,   1,  17,   6,  -1, -16, -15, -35, -15,  -2,
      0,   4, -19,  -8, -20, -13,  -1, -14,   7,  -3,
     18,   0,  10,   5,  19, -19,   0, -21,   8, -16,
      9,  39,   0,  36,  10,   7,  -9,   4, -20,   5,
    }, {
     22,   5,  42,  26,  -6,   8,   1,   2,  -9,  17,
    -10,  18, -21,  19, -39, -31, -23, -23, -16, -15,
      2, -12,   7,   6,   5,  -9,   1, -10,   7, -16,
      4,   9,   0,  10,  17,  22,  16,   2,  14,   9,
    }, {
     44,  -6,  30,   8,  -9, -10, -11, -14, -23,   5,
     -8,   4, -14,  12, -37, -14, -12, -26,  -4, -16,
      8, -16,   9,  -7,   6, -19, -12, -25,   5, -24,
     15,  13,   8,  36,  34,  31,   1,  18,   4,  18,
    }, {
     -3,  -5,  -9,  -7,  15,  -1,   5,  13,   2,  12,
      5,   2, -21, -23,  -2, -16,   0,   5,  -6,  13,
    -23,   3, -32,  10, -15,   8,  44,  28,   9,  37,
     -2,  13,  -9, -15, -12, -27,  -7, -12,   0, -11,
    }, {
     18, -17, -21, -25,  11, -19,  -6,  -3, -11,   0,
      7, -11, -13, -31,  -1,   0,   9,   1,   5,  12,
    -18,   0, -31,  -2, -13,  -1,  30,  14,   7,  29,
      9,  18,  -1,  10,   4, -18, -22,   3, -10,  -2,
    }, {
    -13, -13,   3,  -5,   7,   4,   9,  34,  -5,  20,
     -2,   3, -16,  -3, -20, -17, -11,  -7, -17,   0,
    -34, -13, -33,  -2, -28,   8,  32,  24,   5,  29,
      3, -12,   0, -15,  11,  -3,   3,   2,  24,   1,
    }, {
      8, -25,  -8, -23,   3, -13,  -3,  17, -20,   8,
      0, -10,  -8, -11, -18,   0,  -1, -10,  -5,   0,
    -28, -17, -32, -15, -26,  -1,  19,   9,   3,  21,
     15,  -7,   6,   9,  29,   5, -10,  17,  15,   9,
    }, {
      4,  -6,  -3,   5,  -1,  -4, -11,  16,  -6,  23,
     19,  29,   0,  -3,   6, -30,   3, -17, -10,  -5,
    -13,  -2, -17,   3,   5,   3,  35,  21,  17,  17,
      2,  35,  -2, -15,   3, -28, -13, -21, -13, -13,
    }, {
     26, -19, -15, -12,  -5, -22, -24,   0, -21,  12,
     21,  15,   8, -11,   7, -12,  14, -20,   2,  -6,
     -7,  -6, -16,  -9,   6,  -5,  21,   7,  15,  10,
     13,  39,   5,  10,  20, -19, -28,  -5, -22,  -5,
    }, {
     -5, -15,   9,   7,  -9,   2,  -8,  37, -14,  31,
     11,  29,   5,  16, -11, -30,  -7, -29, -21, -18,
    -23, -19, -18,  -9,  -7,   3,  23,  17,  14,   9,
      8,   9,   6, -15,  27,  -4,  -2,  -6,  12,  -1,
    }, {
     16, -27,  -2, -10, -13, -16, -20,  20, -29,  20,
     14,  16,  13,   8,  -9, -13,   2, -33,  -9, -19,
    -17, -23, -17, -22,  -6,  -6,   9,   2,  12,   2,
     20,  13,  13,  10,  45,   4, -16,   8,   2,   7,
    }, {
    -16,  14,  -2,   8,  20,  17,   9,   2,  14,  16,
     -6,   5, -24, -28, -21, -20,  -8,   9,   4,  25,
     -1,  11, -22,  24, -15,  -8,  21,   5,  11,  14,
     -5,  18, -11,   7, -27, -20, -14,  -7,   1,  -9,
    }, {
      6,   2, -14,  -9,  16,  -1,  -3, -14,   0,   5,
     -3,  -8, -16, -36, -19,  -3,   1,   6,  17,  24,
      4,   7, -21,  11, -14, -18,   7,  -9,   9,   7,
      6,  22,  -3,  33, -10, -11, -28,   7,  -7,   0,
    }, {
    -26,   6,  11,  10,  12,  23,  12,  23,   5,  24,
    -13,   5, -19,  -8, -38, -21, -20,  -2,  -6,  12,
    -11,  -5, -23,  11, -29,  -9,   9,   0,   7,   6,
      1,  -7,  -2,   7,  -3,   3,  -2,   6,  27,   3,
    }, {
     -4,  -6,   0,  -7,   8,   4,   0,   6,  -9,  13,
    -11,  -7, -11, -15, -37,  -4,  -9,  -5,   5,  11,
     -5,  -9, -22,  -1, -27, -18,  -4, -14,   5,   0,
     12,  -3,   4,  32,  14,  12, -17,  22,  17,  11,
    }, {
     -8,  12,   3,  21,   3,  14,  -8,   5,   4,  28,
      7,  32,  -2,  -8, -12, -34,  -4, -12,   1,   6,
      9,   4,  -7,  17,   4, -13,  11,  -1,  19,  -4,
      0,  39,  -4,   7, -11, -21, -20, -16, -10, -11,
    }, {
     13,   0,  -8,   3,   0,  -4, -21, -11,  -9,  16,
     10,  18,   5, -16, -10, -16,   5, -15,  13,   5,
     15,   1,  -6,   4,   6, -23,  -2, -16,  17, -12,
     10,  44,   3,  33,   6, -12, -34,  -1, -20,  -3,
    }, {
    -18,   4,  17,  23,  -4,  20,  -4,  26,  -3,  36,
      0,  32,   2,  12, -29, -34, -16, -24, -10,  -6,
      0, -12,  -8,   4,  -8, -13,   0,  -6,  16, -12,
      5,  13,   3,   7,  13,   3,  -8,  -2,  14,   0,
    }, {
      3,  -7,   5,   5,  -8,   2, -17,   9, -18,  24,
      2,  19,  10,   4, -28, -17,  -5, -28,   2,  -7,
      4, -15,  -7,  -8,  -6, -23, -13, -21,  14, -20,
     17,  18,  11,  33,  30,  11, -23,  13,   5,   9,
    }, {
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    -11,   7,  -6,   8, -27, -22, -14, -12,  -5, -16,
    }, {
    -57,   0, -27, -13,  14,   5,   7, -11,  15,  -4,
     -5, -16, -13, -29,  -6,  13,   0,  25,  16,  31,
     12,  22,  -2,  23,   6, -16,   7, -14,   2,  -3,
      0,  12,   0,  33,  -9, -13, -28,   3, -14,  -7,
    }, {
    -90,   3,  -2,   6,  10,  29,  24,  26,  21,  15,
    -15,  -2, -16,  -1, -25,  -4, -21,  16,  -6,  18,
     -3,   8,  -5,  24,  -8,  -7,   9,  -4,   1,  -3,
     -5, -18,   1,   7,  -2,   1,  -2,   1,  19,  -3,
    }, {
    -67,  -8, -14, -11,   7,  11,  11,   9,   7,   3,
    -13, -16,  -8,  -9, -24,  12, -10,  13,   5,  17,
      2,   4,  -3,  10,  -6, -17,  -4, -19,   0, -11,
      6, -13,   9,  33,  14,  10, -16,  17,  10,   4,
    }, {
    -71,  10,  -9,  17,   1,  20,   3,   8,  21,  18,
      6,  24,   0,  -1,   0, -16,  -6,   5,   0,  13,
     17,  19,  11,  29,  25, -11,  11,  -6,  13, -15,
     -7,  29,   0,   8, -11, -22, -20, -21, -17, -18,
    }, {
    -49,  -2, -21,   0,  -1,   2,  -9,  -8,   6,   6,
      8,  10,   8,  -9,   2,   0,   4,   2,  13,  12,
     23,  15,  12,  16,  26, -21,  -2, -21,  11, -23,
      4,  33,   7,  33,   6, -13, -34,  -5, -27, -10,
    }, {
    -82,   1,   4,  19,  -6,  27,   6,  29,  12,  26,
     -1,  24,   5,  18, -17, -17, -17,  -6, -10,   0,
      7,   2,   9,  16,  12, -11,   0, -11,   9, -23,
      0,   3,   8,   8,  13,   1,  -8,  -7,   7,  -6,
    }, {
    -60, -10,  -7,   1,  -9,   8,  -6,  13,  -2,  15,
      1,  10,  13,  11, -15,   0,  -6,  -9,   1,   0,
     13,  -1,  11,   3,  13, -21, -13, -26,   7, -31,
     10,   7,  16,  33,  31,  10, -22,   8,  -1,   2,
    }, {
     -3,   7,  -5,  -5,   8,  -2,  17,  -9,  18, -24,
     -2, -19, -10,  -4,  28,  17,   5,  28,  -2,   7,
     -4,  15,   7,   8,   6,  23,  13,  21, -14,  20,
    -17, -18, -11, -33, -30, -11,  23, -13,  -5,  -9,
    }, {
     18,  -4, -17, -23,   4, -20,   4, -26,   3, -36,
      0, -32,  -2, -12,  29,  34,  16,  24,  10,   6,
      0,  12,   8,  -4,   8,  13,   0,   6, -16,  12,
     -5, -13,  -3,  -7, -13,  -3,   8,   2, -14,   0,
    }, {
    -13,   0,   8,  -3,   0,   4,  21,  11,   9, -16,
    -10, -18,  -5,  16,  10,  16,  -5,  15, -13,  -5,
    -15,  -1,   6,  -4,  -6,  23,   2,  16, -17,  12,
    -10, -44,  -3, -33,  -6,  12,  34,   1,  20,   3,
    }, {
      8, -12,  -3, -21,  -3, -14,   8,  -5,  -4, -28,
     -7, -32,   2,   8,  12,  34,   4,  12,  -1,  -6,
     -9,  -4,   7, -17,  -4,  13, -11,   1, -19,   4,
      0, -39,   4,  -7,  11,  21,  20,  16,  10,  11,
    }, {
      4,   6,   0,   7,  -8,  -4,   0,  -6,   9, -13,
     11,   7,  11,  15,  37,   4,   9,   5,  -5, -11,
      5,   9,  22,   1,  27,  18,   4,  14,  -5,   0,
    -12,   3,  -4, -32, -14, -12,  17, -22, -17, -11,
    }, {
     26,  -6, -11, -10, -12, -23, -12, -23,  -5, -24,
     13,  -5,  19,   8,  38,  21,  20,   2,   6, -12,
     11,   5,  23, -11,  29,   9,  -9,   0,  -7,  -6,
     -1,   7,   2,  -7,   3,  -3,   2,  -6, -27,  -3,
    }, {
     -6,  -2,  14,   9, -16,   1,   3,  14,   0,  -5,
      3,   8,  16,  36,  19,   3,  -1,  -6, -17, -24,
     -4,  -7,  21, -11,  14,  18,  -7,   9,  -9,  -7,
     -6, -22,   3, -33,  10,  11,  28,  -7,   7,   0,
    }, {
     16, -14,   2,  -8, -20, -17,  -9,  -2, -14, -16,
      6,  -5,  24,  28,  21,  20,   8,  -9,  -4, -25,
      1, -11,  22, -24,  15,   8, -21,  -5, -11, -14,
      5, -18,  11,  -7,  27,  20,  14,   7,  -1,   9,
    }, {
    -16,  27,   2,  10,  13,  16,  20, -20,  29, -20,
    -14, -16, -13,  -8,   9,  13,  -2,  33,   9,  19,
     17,  23,  17,  22,   6,   6,  -9,  -2, -12,  -2,
    -20, -13, -13, -10, -45,  -4,  16,  -8,  -2,  -7,
    }, {
      5,  15,  -9,  -7,   9,  -2,   8, -37,  14, -31,
    -11, -29,  -5, -16,  11,  30,   7,  29,  21,  18,
     23,  19,  18,   9,   7,  -3, -23, -17, -14,  -9,
     -8,  -9,  -6,  15, -27,   4,   2,   6, -12,   1,
    }, {
    -26,  19,  15,  12,   5,  22,  24,   0,  21, -12,
    -21, -15,  -8,  11,  -7,  12, -14,  20,  -2,   6,
      7,   6,  16,   9,  -6,   5, -21,  -7, -15, -10,
    -13, -39,  -5, -10, -20,  19,  28,   5,  22,   5,
    }, {
     -4,   6,   3,  -5,   1,   4,  11, -16,   6, -23,
    -19, -29,   0,   3,  -6,  30,  -3,  17,  10,   5,
     13,   2,  17,  -3,  -5,  -3, -35, -21, -17, -17,
     -2, -35,   2,  15,  -3,  28,  13,  21,  13,  13,
    }, {
     -8,  25,   8,  23,  -3,  13,   3, -17,  20,  -8,
      0,  10,   8,  11,  18,   0,   1,  10,   5,   0,
     28,  17,  32,  15,  26,   1, -19,  -9,  -3, -21,
    -15,   7,  -6,  -9, -29,  -5,  10, -17, -15,  -9,
    }, {
     13,  13,  -3,   5,  -7,  -4,  -9, -34,   5, -20,
      2,  -3,  16,   3,  20,  17,  11,   7,  17,   0,
     34,  13,  33,   2,  28,  -8, -32, -24,  -5, -29,
     -3,  12,   0,  15, -11,   3,  -3,  -2, -24,  -1,
    }, {
    -18,  17,  21,  25, -11,  19,   6,   3,  11,   0,
     -7,  11,  13,  31,   1,   0,  -9,  -1,  -5, -12,
     18,   0,  31,   2,  13,   1, -30, -14,  -7, -29,
     -9, -18,   1, -10,  -4,  18,  22,  -3,  10,   2,
    }, {
      3,   5,   9,   7, -15,   1,  -5, -13,  -2, -12,
     -5,  -2,  21,  23,   2,  16,   0,  -5,   6, -13,
     23,  -3,  32, -10,  15,  -8, -44, -28,  -9, -37,
      2, -13,   9,  15,  12,  27,   7,  12,   0,  11,
    }, {
    -44,   6, -30,  -8,   9,  10,  11,  14,  23,  -5,
      8,  -4,  14, -12,  37,  14,  12,  26,   4,  16,
     -8,  16,  -9,   7,  -6,  19,  12,  25,  -5,  24,
    -15, -13,  -8, -36, -34, -31,  -1, -18,  -4, -18,
    }, {
    -22,  -5, -42, -26,   6,  -8,  -1,  -2,   9, -17,
     10, -18,  21, -19,  39,  31,  23,  23,  16,  15,
     -2,  12,  -7,  -6,  -5,   9,  -1,  10,  -7,  16,
     -4,  -9,   0, -10, -17, -22, -16,  -2, -14,  -9,
    }, {
    -55,  -1, -17,  -6,   1,  16,  15,  35,  15,   2,
      0,  -4,  19,   8,  20,  13,   1,  14,  -7,   3,
    -18,   0, -10,  -5, -19,  19,   0,  21,  -8,  16,
     -9, -39,   0, -36, -10,  -7,   9,  -4,  20,  -5,
    }, {
    -33, -13, -29, -24,  -1,  -1,   2,  18,   0,  -9,
      3, -17,  27,   0,  21,  30,  12,  11,   5,   2,
    -12,  -4,  -9, -19, -18,   9, -13,   6, -11,   8,
      2, -35,   8, -10,   7,   1,  -4,  11,  10,   2,
    }, {
    -36,   5, -24,   4,  -7,   7,  -6,  17,  14,   5,
     22,  22,  35,   8,  46,   1,  17,   3,   0,  -2,
      2,  10,   5,   0,  14,  15,   2,  18,   2,   4,
    -11,   7,  -1, -36, -18, -32,  -7, -27, -17, -20,
    }, {
    -14,  -7, -36, -13, -10, -10, -18,   0,   0,  -5,
     25,   8,  43,   0,  48,  18,  27,   0,  12,  -3,
      7,   6,   7, -13,  15,   5, -11,   3,   0,  -2,
      0,  12,   6, -10,   0, -23, -22, -11, -26, -12,
    }, {
    -47,  -3, -11,   6, -15,  13,  -2,  38,   6,  13,
     15,  22,  40,  28,  28,   0,   5,  -8, -10, -15,
     -7,  -7,   4, -13,   1,  14,  -9,  14,   0,  -2,
     -4, -18,   7, -36,   6,  -8,   3, -13,   7,  -8,
    }, {
    -25, -15, -22, -11, -18,  -4, -15,  22,  -8,   2,
     17,   9,  48,  20,  30,  17,  16, -11,   1, -16,
     -2, -10,   5, -26,   2,   4, -22,   0,  -2, -10,
      6, -13,  14, -10,  23,   0, -10,   2,  -1,   0,
    }, {
    -57,  26, -22,   7,  14,  28,  14,   3,  35,   0,
     -3,  -1,  11, -16,  18,  10,   4,  31,  15,  28,
     14,  23,   1,  21,  -7,   2, -11,   1,  -3,   1,
    -18,  -9, -10, -13, -49, -24,  -8, -14,  -2, -16,
    }, {
    -35,  14, -34, -10,  10,  10,   1, -12,  20, -12,
      0, -15,  18, -24,  20,  27,  14,  28,  27,  27,
     20,  19,   2,   8,  -5,  -7, -25, -13,  -5,  -5,
     -6,  -5,  -2,  12, -31, -15, -23,   1, -12,  -8,
    }, {
    -68,  18,  -9,   9,   6,  35,  18,  25,  26,   7,
    -10,  -1,  16,   3,   1,   9,  -6,  19,   4,  15,
      4,   6,   0,   8, -20,   2, -23,  -2,  -7,  -5,
    -12, -35,  -1, -13, -24,   0,   3,   0,  22,  -4,
    }, {
    -46,   6, -21,  -8,   2,  16,   5,   8,  11,  -4,
     -8, -15,  24,  -4,   2,  26,   3,  16,  16,  14,
      9,   2,   1,  -4, -19,  -7, -36, -17,  -9, -13,
      0, -31,   5,  12,  -7,   8, -11,  15,  13,   4,
    }, {
    -49,  24, -16,  20,  -2,  26,  -2,   7,  25,  10,
     11,  25,  32,   3,  27,  -2,   8,   8,  11,   9,
     24,  17,  16,  14,  13,  -2, -20,  -5,   4, -17,
    -14,  12,  -3, -13, -33, -25, -14, -23, -15, -19,
    }, {
    -27,  12, -28,   2,  -6,   7, -15,  -9,  11,  -1,
     13,  11,  40,  -4,  29,  14,  19,   5,  23,   8,
     30,  13,  17,   0,  14, -12, -34, -20,   2, -25,
     -2,  16,   4,  12, -15, -16, -29,  -7, -24, -10,
    }, {
    -60,  16,  -3,  22, -10,  32,   0,  28,  17,  18,
      3,  25,  37,  23,  10,  -3,  -2,  -3,   0,  -3,
     14,   0,  14,   1,   0,  -2, -32,  -9,   1, -25,
     -7, -13,   5, -13,  -8,  -1,  -2,  -8,  10,  -6,
    }, {
    -38,   4, -15,   4, -14,  13, -12,  11,   2,   6,
      6,  11,  45,  16,  11,  13,   7,  -6,  12,  -4,
     20,  -3,  16, -12,   1, -12, -46, -24,   0, -33,
      3,  -9,  12,  12,   8,   7, -17,   6,   0,   2
    }
};

const int8_t ff_cb2_vects[128][40]={
    {
     73, -32, -60, -15, -26,  59,   2, -33,  30, -10,
     -3, -17,   8,  30,  -1, -26,  -4, -22,  10,  16,
    -36,  -5, -11,  56,  37,   6, -10,  -5, -13,  -3,
      6,  -5,  11,   4, -19,  -5, -16,  41,  24,  13,
    }, {
      4, -11, -37,  23,  -5,  46,  -2, -29,  -5, -39,
    -21,  -9,   0,  49,  12,  -9, -16, -26,  22,  15,
    -45, -20,  -5,  40,  22,  17, -26,  31, -14,   2,
    -14,  10,  30,  20, -27,  -9, -39,  39,  18,   5,
    }, {
     34, -25, -48, -28, -11,  34,  -2, -41,   9,  -7,
    -17,  21,  20,  24, -17, -33,   0, -24,  10,  42,
      3,  -5,  10,  42,  11,   8,  -3,   3,  16,   9,
     22,  -2,   0, -33, -10,  18,   7,  58,  10,  28,
    }, {
    -34,  -4, -25,  10,   9,  21,  -7, -36, -26, -36,
    -35,  28,  12,  42,  -3, -16, -12, -28,  21,  42,
     -5, -21,  16,  26,  -4,  19, -19,  39,  15,  15,
      1,  13,  19, -17, -17,  14, -15,  55,   4,  19,
    }, {
     28, -20, -51, -14,  -6,   7,   0, -26,  27,  -4,
     18, -40,  -6,  16,  -1, -15,   0, -55,  -5, -16,
    -19,  14,  -3,  49,  14,   1, -22, -30, -12,   0,
     24,  15,   9, -17, -45, -29,   4,  28,  51,  35,
    }, {
    -40,   0, -28,  24,  14,  -5,  -4, -21,  -7, -33,
      0, -32, -15,  35,  12,   1, -11, -58,   5, -16,
    -28,   0,   1,  33,   0,  11, -39,   5, -14,   6,
      3,  31,  28,  -1, -53, -33, -19,  25,  46,  26,
    }, {
    -11, -14, -39, -27,   9, -17,  -4, -33,   6,   0,
      4,  -1,   5,  10, -17, -22,   5, -57,  -5,   9,
     20,  13,  18,  35, -11,   3, -16, -22,  17,  13,
     40,  19,  -1, -55, -35,  -5,  27,  44,  37,  49,
    }, {
    -80,   6, -16,  11,  30, -30,  -9, -28, -28, -29,
    -13,   6,  -2,  28,  -3,  -5,  -7, -60,   5,   9,
     11,  -1,  24,  19, -27,  13, -32,  13,  15,  19,
     19,  35,  17, -39, -43,  -9,   4,  42,  32,  41,
    }, {
     78, -21, -43,   4, -38,  17,  17,  -5,  55,  24,
    -15, -36,  14,   4,  24, -24,  12,   5,  17,  31,
    -54,  -5,  -2,  27,  43, -12,   2,   9,  -9, -15,
     22,  -3,  28,  21, -20,   3,  20,  28,   9,  -5,
    }, {
      9,  -1, -20,  43, -17,   3,  12,   0,  20,  -4,
    -33, -29,   6,  22,  38,  -7,   0,   1,  29,  30,
    -63, -21,   3,  11,  27,  -1, -14,  45, -10,  -9,
      1,  12,  47,  37, -28,   0,  -2,  26,   4, -13,
    }, {
     39, -14, -30,  -8, -22,  -8,  12, -12,  34,  27,
    -29,   2,  26,  -2,   8, -31,  16,   3,  17,  57,
    -14,  -6,  19,  13,  16, -10,   8,  17,  20,  -2,
     38,   0,  17, -16, -11,  27,  44,  45,  -4,   8,
    }, {
    -29,   5,  -7,  30,  -1, -21,   7,  -7,   0,   0,
    -47,   9,  18,  15,  22, -14,   4,   0,  28,  57,
    -23, -21,  25,  -2,   1,   0,  -7,  53,  19,   3,
     17,  15,  36,   0, -19,  24,  21,  43,  -9,   0,
    }, {
     33, -10, -34,   5, -17, -35,  15,   1,  53,  30,
      6, -59,   0, -10,  24, -13,  17, -27,   1,  -1,
    -37,  13,   4,  20,  20, -18, -10, -16,  -8, -11,
     39,  18,  26,   0, -46, -20,  41,  15,  37,  15,
    }, {
    -35,  10, -11,  44,   3, -48,  10,   6,  17,   2,
    -11, -51,  -8,   8,  38,   3,   4, -31,  12,  -2,
    -46,  -1,  10,   4,   5,  -7, -26,  19, -10,  -5,
     18,  34,  45,  15, -54, -24,  18,  13,  31,   7,
    }, {
     -5,  -3, -21,  -7,  -2, -60,  10,  -5,  32,  34,
     -7, -20,  11, -16,   8, -20,  21, -29,   1,  24,
      2,  13,  27,   6,  -5, -15,  -3,  -8,  21,   1,
     55,  21,  15, -38, -37,   3,  65,  32,  23,  30,
    }, {
    -74,  17,   0,  31,  18, -73,   5,   0,  -3,   5,
    -25, -12,   3,   1,  22,  -3,   9, -33,  12,  24,
     -6,  -2,  33,  -9, -21,  -5, -20,  27,  19,   7,
     34,  37,  34, -22, -44,   0,  41,  29,  17,  21,
    }, {
     76, -35, -31, -28, -49,  43, -40,   0,  29, -14,
      8,   5,  10,  18, -26, -46,   0,   7,   6,   3,
    -25,  -7,  -2,  40,  28,  14,  18,  -3, -27, -28,
     -8, -45, -13,  34, -13, -27, -15,  31,  12,   3,
    }, {
      7, -15,  -9,   9, -28,  29, -45,   5,  -6, -43,
     -9,  12,   2,  36, -12, -30, -11,   3,  17,   3,
    -34, -22,   3,  24,  12,  24,   2,  32, -28, -22,
    -29, -29,   5,  50, -21, -31, -38,  29,   7,  -5,
    }, {
     36, -29, -19, -41, -34,  18, -45,  -6,   8, -10,
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    -10,  -3,   4,  18,  15, -27,  24, -13,  24,  51,
     34, -47, -12, -28,  21,  19,  27, -16,  15, -30,
    -17, -12, -12,   0,  36, -10,  -7, -27, -37,  16,
     15,  22,  -3,   4, -31,  -1,  42,  -7,  18,   9,
    }, {
    -79,  17,  27,  56,  36, -41,  19,  -8, -10,  22,
     15, -39, -20,  -9,  35,  35,  15, -20,  26, -31,
    -26, -27,  -6, -15,  20,   0, -23,   8, -38,  22,
     -5,  38,  15,  20, -39,  -4,  18,  -9,  13,   1,
    }, {
    -50,   3,  16,   5,  30, -53,  19, -20,   3,  55,
     19,  -8,   0, -34,   5,  11,  32, -18,  15,  -4,
     22, -13,  10, -13,   9,  -8,   0, -19,  -7,  29,
     31,  26, -13, -33, -21,  22,  65,   9,   4,  23,
    }, {
   -119,  24,  39,  44,  51, -66,  14, -15, -31,  26,
      1,   0,  -7, -16,  19,  28,  19, -22,  26,  -4,
     13, -28,  16, -29,  -5,   1, -16,  16,  -8,  35,
     10,  42,   4, -17, -29,  19,  42,   7,   0,  15,
    }, {
     31, -28,   6, -16, -16,  50, -31, -14,   0,   6,
     36,  17,   0,   0, -29, -14,  11,  18,  20, -25,
     -6, -33, -19,  20,  43,  21,  21, -14, -55,   0,
    -32, -40, -42,  39,   1,  -8, -14,   8,  -6,  -3,
    }, {
    -37,  -8,  29,  22,   4,  37, -36,  -9, -34, -22,
     17,  24,  -8,  18, -15,   2,  -1,  14,  31, -25,
    -15, -48, -13,   4,  28,  31,   5,  21, -57,   4,
    -53, -24, -23,  55,  -6, -12, -37,   6, -11, -11,
    }, {
     -7, -22,  18, -29,  -1,  25, -36, -21, -20,   9,
     22,  56,  11,  -6, -45, -21,  15,  16,  20,   1,
     33, -34,   2,   6,  17,  23,  28,  -6, -25,  12,
    -16, -37, -53,   1,  11,  15,   8,  25, -20,  11,
    }, {
    -76,  -1,  41,   9,  19,  12, -41, -17, -55, -18,
      3,  63,   3,  12, -30,  -5,   3,  12,  31,   0,
     24, -49,   8,  -9,   1,  33,  12,  29, -27,  18,
    -37, -21, -34,  17,   3,  11, -14,  23, -25,   2,
    }, {
    -13, -17,  15, -15,   3,  -1, -33,  -7,  -1,  12,
     58,  -5, -15, -13, -29,  -3,  16, -13,   4, -57,
     10, -13, -11,  13,  21,  15,   9, -40, -55,   3,
    -14, -19, -44,  17, -24, -32,   5,  -4,  21,  18,
    }, {
    -82,   3,  38,  23,  24, -15, -38,  -2, -37, -15,
     39,   2, -23,   4, -15,  12,   3, -17,  15, -58,
      1, -29,  -6,  -2,   5,  26,  -7,  -4, -56,   9,
    -35,  -3, -25,  33, -32, -36, -17,  -7,  15,   9,
    }, {
    -52, -10,  27, -27,  18, -26, -38, -14, -23,  16,
     44,  33,  -3, -20, -45, -10,  20, -15,   3, -31,
     50, -14,  10,   0,  -5,  17,  15, -32, -24,  16,
      1, -15, -55, -20, -14,  -8,  29,  12,   7,  32,
    }, {
   -121,   9,  50,  10,  40, -40, -43,  -9, -58, -12,
     25,  41, -11,  -2, -31,   5,   8, -19,  15, -32,
     41, -30,  16, -16, -20,  28,   0,   3, -26,  22,
    -19,   0, -36,  -4, -22, -12,   6,   9,   1,  24,
    }, {
     36, -18,  24,   3, -28,   7, -16,  13,  26,  41,
     24,  -1,   5, -26,  -3, -12,  27,  46,  27, -10,
    -24, -34, -10,  -8,  49,   2,  34,   0, -51, -12,
    -17, -38, -25,  56,   0,   0,  22,  -3, -20, -22,
    }, {
    -32,   2,  47,  42,  -7,  -5, -21,  18,  -9,  12,
      5,   5,  -2,  -8,  10,   4,  14,  42,  38, -10,
    -33, -49,  -5, -24,  33,  12,  17,  35, -52,  -6,
    -38, -22,  -7,  72,  -7,  -3,   0,  -6, -25, -30,
    }, {
     -2, -11,  36,  -9, -13, -17, -21,   6,   5,  45,
     10,  36,  18, -33, -19, -19,  31,  44,  27,  15,
     16, -34,  11, -22,  22,   4,  40,   7, -21,   0,
     -1, -35, -36,  18,  10,  24,  46,  12, -34,  -8,
    }, {
    -71,   9,  59,  29,   8, -30, -26,  11, -30,  16,
     -8,  44,   9, -14,  -5,  -2,  19,  40,  38,  15,
      7, -50,  17, -38,   7,  14,  24,  43, -22,   6,
    -22, -19, -17,  34,   2,  20,  23,  10, -39, -16,
    }, {
     -8,  -6,  33,   4,  -7, -44, -18,  21,  23,  48,
     46, -24,  -9, -40,  -3,  -1,  32,  13,  11, -43,
     -7, -14,  -3, -15,  26,  -3,  21, -26, -50,  -8,
      0, -16, -27,  34, -25, -23,  43, -17,   6,  -1,
    }, {
    -77,  13,  56,  43,  13, -57, -23,  26, -11,  19,
     27, -16, -17, -22,  10,  15,  19,  10,  22, -43,
    -16, -30,   2, -31,  11,   6,   5,   9, -52,  -2,
    -20,   0,  -8,  50, -33, -27,  19, -19,   1,  -9,
    }, {
    -47,   0,  45,  -7,   7, -69, -23,  13,   2,  51,
     32,  14,   3, -47, -19,  -8,  37,  11,  10, -16,
     32, -15,  19, -29,   0,  -1,  28, -18, -20,   4,
     16, -13, -38,  -3, -15,   0,  66,   0,  -7,  13,
    }, {
   -116,  20,  68,  30,  28, -83, -28,  18, -32,  22,
     13,  21,  -5, -28,  -5,   7,  24,   8,  22, -17,
     23, -30,  25, -45, -15,   9,  11,  18, -22,  10,
     -4,   2, -19,  12, -23,  -3,  43,  -2, -12,   4,
    }, {
     72, -13, -29, -18,   4,  90,  37, -34,   4,  -1,
     13,  -9,  -6,  11,   2,  24, -13,   3,  -7, -11,
     -4,   4, -42,  25,  31,  -1,  -8, -29,  -6,  17,
    -19,   2, -10,  -6,  38,  22, -42, -19,  -6, -11,
    }, {
      3,   7,  -6,  20,  25,  77,  32, -29, -31, -30,
     -4,  -2, -14,  29,  16,  40, -26,   0,   3, -12,
    -13, -10, -36,   9,  15,   8, -24,   6,  -7,  22,
    -40,  17,   8,   9,  31,  18, -66, -22, -11, -19,
    }, {
     32,  -6, -17, -31,  19,  65,  33, -41, -16,   1,
      0,  29,   6,   4, -13,  17,  -9,   1,  -8,  14,
     35,   3, -19,  11,   4,   0,  -1, -21,  23,  30,
     -3,   5, -20, -44,  48,  46, -19,  -3, -20,   3,
    }, {
    -36,  13,   5,   7,  40,  51,  28, -36, -52, -27,
    -18,  36,  -2,  22,   0,  33, -21,  -2,   3,  13,
     26, -11, -14,  -4, -10,  10, -18,  14,  22,  36,
    -24,  21,  -1, -28,  40,  42, -42,  -5, -25,  -5,
    }, {
     27,  -1, -20, -17,  24,  38,  35, -26,   1,   4,
     35, -32, -21,  -3,   2,  35,  -8, -29, -24, -44,
     12,  24, -34,  18,   8,  -7, -21, -55,  -5,  21,
     -2,  23, -11, -28,  13,  -1, -22, -33,  21,  10,
    }, {
    -41,  18,   2,  21,  45,  24,  30, -21, -33, -24,
     17, -24, -29,  15,  16,  51, -21, -33, -13, -45,
      3,   8, -28,   2,  -7,   2, -37, -19,  -7,  27,
    -22,  39,   7, -12,   5,  -5, -45, -35,  15,   1,
    }, {
    -12,   4,  -8, -29,  39,  12,  30, -33, -19,   8,
     21,   6,  -8,  -9, -13,  28,  -4, -31, -24, -18,
     52,  23, -12,   4, -18,  -5, -14, -47,  24,  34,
     14,  27, -22, -66,  22,  22,   1, -16,   6,  24,
    }, {
    -81,  25,  14,   8,  61,   0,  25, -28, -54, -20,
      3,  14, -17,   8,   0,  44, -16, -35, -13, -18,
     43,   7,  -6, -11, -33,   4, -30, -11,  22,  40,
     -6,  43,  -3, -50,  14,  18, -22, -18,   1,  16,
    }, {
     77,  -2, -11,   1,  -7,  47,  52,  -5,  29,  33,
      1, -28,   0, -15,  28,  26,   2,  30,   0,   2,
    -22,   4, -33,  -3,  36, -21,   3, -15,  -2,   5,
     -4,   4,   6,   9,  37,  31,  -5, -32, -20, -30,
    }, {
      8,  17,  10,  40,  13,  34,  47,   0,  -5,   4,
    -16, -21,  -8,   2,  42,  43, -10,  26,  10,   2,
    -31, -11, -27, -19,  21, -10, -12,  20,  -3,  11,
    -25,  20,  25,  25,  29,  28, -28, -34, -25, -38,
    }, {
     37,   3,   0, -10,   7,  22,  48, -12,   8,  36,
    -12,   9,  12, -22,  12,  19,   6,  28,   0,  29,
     18,   3, -11, -17,  10, -18,  10,  -7,  27,  18,
     11,   7,  -3, -28,  47,  55,  18, -15, -34, -16,
    }, {
    -31,  24,  23,  27,  29,   9,  43,  -8, -26,   7,
    -30,  17,   4,  -3,  26,  35,  -5,  24,  10,  28,
      9, -12,  -5, -33,  -5,  -8,  -5,  29,  26,  24,
     -9,  23,  14, -12,  39,  52,  -5, -18, -39, -24,
    }, {
     32,   8,  -3,   2,  13,  -4,  50,   1,  27,  39,
     23, -51, -15, -30,  27,  37,   7,  -1, -17, -29,
     -5,  23, -25, -10,  14, -26,  -8, -41,  -1,   9,
     13,  26,   5, -12,  12,   7,  14, -45,   6,  -9,
    }, {
    -36,  29,  19,  41,  34, -18,  45,   6,  -8,  10,
      5, -43, -23, -11,  42,  53,  -5,  -5,  -6, -30,
    -14,   8, -20, -26,  -1, -16, -25,  -4,  -3,  15,
     -7,  41,  23,   3,   4,   3,  -8, -48,   1, -17,
    }, {
     -7,  15,   9,  -9,  28, -29,  45,  -5,   6,  43,
      9, -12,  -2, -36,  12,  30,  11,  -3, -17,  -3,
     34,  22,  -3, -24, -12, -24,  -2, -32,  28,  22,
     29,  29,  -5, -50,  21,  31,  38, -29,  -7,   5,
    }, {
    -76,  35,  31,  28,  49, -43,  40,   0, -29,  14,
     -8,  -5, -10, -18,  26,  46,   0,  -7,  -6,  -3,
     25,   7,   2, -40, -28, -14, -18,   3,  27,  28,
      8,  45,  13, -34,  13,  27,  15, -31, -12,  -3,
    }, {
     74, -17,   0, -31, -18,  73,  -5,   0,   3,  -5,
     25,  12,  -3,  -1, -22,   3,  -9,  33, -12, -24,
      6,   2, -33,   9,  21,   5,  20, -27, -19,  -7,
    -34, -37, -34,  22,  44,   0, -41, -29, -17, -21,
    }, {
      5,   3,  21,   7,   2,  60, -10,   5, -32, -34,
      7,  20, -11,  16,  -8,  20, -21,  29,  -1, -24,
     -2, -13, -27,  -6,   5,  15,   3,   8, -21,  -1,
    -55, -21, -15,  38,  37,  -3, -65, -32, -23, -30,
    }, {
     35, -10,  11, -44,  -3,  48, -10,  -6, -17,  -2,
     11,  51,   8,  -8, -38,  -3,  -4,  31, -12,   2,
     46,   1, -10,  -4,  -5,   7,  26, -19,  10,   5,
    -18, -34, -45, -15,  54,  24, -18, -13, -31,  -7,
    }, {
    -33,  10,  34,  -5,  17,  35, -15,  -1, -53, -30,
     -6,  59,   0,  10, -24,  13, -17,  27,  -1,   1,
     37, -13,  -4, -20, -20,  18,  10,  16,   8,  11,
    -39, -18, -26,   0,  46,  20, -41, -15, -37, -15,
    }, {
     29,  -5,   7, -30,   1,  21,  -7,   7,   0,   0,
     47,  -9, -18, -15, -22,  14,  -4,   0, -28, -57,
     23,  21, -25,   2,  -1,   0,   7, -53, -19,  -3,
    -17, -15, -36,   0,  19, -24, -21, -43,   9,   0,
    }, {
    -39,  14,  30,   8,  22,   8, -12,  12, -34, -27,
     29,  -2, -26,   2,  -8,  31, -16,  -3, -17, -57,
     14,   6, -19, -13, -16,  10,  -8, -17, -20,   2,
    -38,   0, -17,  16,  11, -27, -44, -45,   4,  -8,
    }, {
     -9,   1,  20, -43,  17,  -3, -12,   0, -20,   4,
     33,  29,  -6, -22, -38,   7,   0,  -1, -29, -30,
     63,  21,  -3, -11, -27,   1,  14, -45,  10,   9,
     -1, -12, -47, -37,  28,   0,   2, -26,  -4,  13,
    }, {
    -78,  21,  43,  -4,  38, -17, -17,   5, -55, -24,
     15,  36, -14,  -4, -24,  24, -12,  -5, -17, -31,
     54,   5,   2, -27, -43,  12,  -2,  -9,   9,  15,
    -22,   3, -28, -21,  20,  -3, -20, -28,  -9,   5,
    }, {
     80,  -6,  16, -11, -30,  30,   9,  28,  28,  29,
     13,  -6,   2, -28,   3,   5,   7,  60,  -5,  -9,
    -11,   1, -24, -19,  27, -13,  32, -13, -15, -19,
    -19, -35, -17,  39,  43,   9,  -4, -42, -32, -41,
    }, {
     11,  14,  39,  27,  -9,  17,   4,  33,  -6,   0,
     -4,   1,  -5, -10,  17,  22,  -5,  57,   5,  -9,
    -20, -13, -18, -35,  11,  -3,  16,  22, -17, -13,
    -40, -19,   1,  55,  35,   5, -27, -44, -37, -49,
    }, {
     40,   0,  28, -24, -14,   5,   4,  21,   7,  33,
      0,  32,  15, -35, -12,  -1,  11,  58,  -5,  16,
     28,   0,  -1, -33,   0, -11,  39,  -5,  14,  -6,
     -3, -31, -28,   1,  53,  33,  19, -25, -46, -26,
    }, {
    -28,  20,  51,  14,   6,  -7,   0,  26, -27,   4,
    -18,  40,   6, -16,   1,  15,   0,  55,   5,  16,
     19, -14,   3, -49, -14,  -1,  22,  30,  12,   0,
    -24, -15,  -9,  17,  45,  29,  -4, -28, -51, -35,
    }, {
     34,   4,  25, -10,  -9, -21,   7,  36,  26,  36,
     35, -28, -12, -42,   3,  16,  12,  28, -21, -42,
      5,  21, -16, -26,   4, -19,  19, -39, -15, -15,
     -1, -13, -19,  17,  17, -14,  15, -55,  -4, -19,
    }, {
    -34,  25,  48,  28,  11, -34,   2,  41,  -9,   7,
     17, -21, -20, -24,  17,  33,   0,  24, -10, -42,
     -3,   5, -10, -42, -11,  -8,   3,  -3, -16,  -9,
    -22,   2,   0,  33,  10, -18,  -7, -58, -10, -28,
    }, {
     -4,  11,  37, -23,   5, -46,   2,  29,   5,  39,
     21,   9,   0, -49, -12,   9,  16,  26, -22, -15,
     45,  20,   5, -40, -22, -17,  26, -31,  14,  -2,
     14, -10, -30, -20,  27,   9,  39, -39, -18,  -5,
    }, {
    -73,  32,  60,  15,  26, -59,  -2,  33, -30,  10,
      3,  17,  -8, -30,   1,  26,   4,  22, -10, -16,
     36,   5,  11, -56, -37,  -6,  10,   5,  13,   3,
     -6,   5, -11,  -4,  19,   5,  16, -41, -24, -13
    }
};

const uint16_t ff_cb1_base[128]={
    19657, 18474, 18365, 17520, 21048, 18231, 18584, 16671,
    20363, 19069, 19409, 18430, 21844, 18753, 19613, 17411,
    20389, 21772, 20129, 21702, 20978, 20472, 19627, 19387,
    21477, 23134, 21841, 23919, 22089, 21519, 21134, 20852,
    19675, 17821, 19044, 17477, 19986, 16955, 18446, 16086,
    21138, 18899, 20952, 18929, 21452, 17833, 20104, 17159,
    19770, 20056, 20336, 20866, 19329, 18217, 18908, 18004,
    21556, 21948, 23079, 23889, 20922, 19544, 20984, 19781,
    19781, 20984, 19544, 20922, 23889, 23079, 21948, 21556,
    18004, 18908, 18217, 19329, 20866, 20336, 20056, 19770,
    17159, 20104, 17833, 21452, 18929, 20952, 18899, 21138,
    16086, 18446, 16955, 19986, 17477, 19044, 17821, 19675,
    20852, 21134, 21519, 22089, 23919, 21841, 23134, 21477,
    19387, 19627, 20472, 20978, 21702, 20129, 21772, 20389,
    17411, 19613, 18753, 21844, 18430, 19409, 19069, 20363,
    16671, 18584, 18231, 21048, 17520, 18365, 18474, 19657,
};

const uint16_t ff_cb2_base[128]={
    12174, 13380, 13879, 13832, 13170, 13227, 13204, 12053,
    12410, 13988, 14348, 14631, 13100, 13415, 13224, 12268,
    11982, 13825, 13499, 14210, 13877, 14788, 13811, 13109,
    11449, 13275, 12833, 13717, 12728, 13696, 12759, 12405,
    10230, 12185, 11628, 13161, 11762, 13458, 12312, 12818,
    10443, 12773, 12011, 14020, 11818, 13825, 12453, 13226,
    10446, 13162, 11881, 14300, 12859, 16288, 13490, 15053,
    10155, 12820, 11519, 13973, 12041, 15081, 12635, 14198,
    14198, 12635, 15081, 12041, 13973, 11519, 12820, 10155,
    15053, 13490, 16288, 12859, 14300, 11881, 13162, 10446,
    13226, 12453, 13825, 11818, 14020, 12011, 12773, 10443,
    12818, 12312, 13458, 11762, 13161, 11628, 12185, 10230,
    12405, 12759, 13696, 12728, 13717, 12833, 13275, 11449,
    13109, 13811, 14788, 13877, 14210, 13499, 13825, 11982,
    12268, 13224, 13415, 13100, 14631, 14348, 13988, 12410,
    12053, 13204, 13227, 13170, 13832, 13879, 13380, 12174,
};

const int16_t ff_energy_tab[32]={
        0,    16,    20,    25,    32,    41,    51,    65,
       81,   103,   129,   163,   205,   259,   326,   410,
      516,   650,   819,  1031,  1298,  1634,  2057,  2590,
     3261,  4105,  5168,  6507,  8192, 10313, 12983, 16345
};

static const int16_t lpc_refl_cb1[64]={
    -4041, -4018, -3998, -3977, -3954, -3930, -3906, -3879,
    -3852, -3825, -3795, -3764, -3731, -3699, -3666, -3631,
    -3594, -3555, -3513, -3468, -3420, -3372, -3321, -3268,
    -3212, -3153, -3090, -3021, -2944, -2863, -2772, -2676,
    -2565, -2445, -2328, -2202, -2072, -1941, -1808, -1660,
    -1508, -1348, -1185,  -994,  -798,  -600,  -374,  -110,
      152,   447,   720,   982,  1229,  1456,  1682,  1916,
     2130,  2353,  2595,  2853,  3118,  3363,  3588,  3814
};

static const int16_t lpc_refl_cb2[32]={
    -3091, -2386, -1871, -1425, -1021,  -649,  -316,   -20,
      267,   544,   810,  1065,  1305,  1534,  1756,  1970,
     2171,  2359,  2536,  2700,  2854,  2996,  3133,  3263,
     3386,  3499,  3603,  3701,  3789,  3870,  3947,  4020
};

static const int16_t lpc_refl_cb3[32]={
    -3525, -3295, -3081, -2890, -2696, -2511, -2328, -2149,
    -1979, -1817, -1658, -1498, -1341, -1188, -1032,  -876,
     -721,  -561,  -394,  -228,   -54,   119,   296,   484,
      683,   895,  1123,  1373,  1651,  1965,  2360,  2854
};

static const int16_t lpc_refl_cb4[16]={
    -1845, -1057,  -522,   -77,   301,   647,   975,  1285,
     1582,  1873,  2163,  2452,  2735,  3017,  3299,  3569
};

static const int16_t lpc_refl_cb5[16]={
    -2691, -2187, -1788, -1435, -1118,  -837,  -571,  -316,
      -59,   201,   470,   759,  1077,  1457,  1908,  2495
};

static const int16_t lpc_refl_cb6[8]={
    -1372,  -474,   133,   632,  1100,  1571,  2075,  2672
};

static const int16_t lpc_refl_cb7[8]={
    -2389, -1787, -1231,  -717,  -239,   234,   770,  1474
};

static const int16_t lpc_refl_cb8[8]={
    -1569,  -864,  -296,   200,   670,  1151,  1709,  2385
};

static const int16_t lpc_refl_cb9[8]={
    -2200, -1608, -1062,  -569,  -120,   338,   863,  1621
};

static const int16_t lpc_refl_cb10[4]={
     -617,   190,   802,  1483
};

const int16_t * const ff_lpc_refl_cb[10]={
    lpc_refl_cb1, lpc_refl_cb2, lpc_refl_cb3, lpc_refl_cb4, lpc_refl_cb5,
    lpc_refl_cb6, lpc_refl_cb7, lpc_refl_cb8, lpc_refl_cb9, lpc_refl_cb10
};

static void ff_add_wav(int16_t *dest, int n, int skip_first, int *m, const int16_t *s1,
                       const int8_t *s2, const int8_t *s3)
{
    int i;
    int v[3];

    v[0] = 0;
    for (i=!skip_first; i<3; i++)
        v[i] = (ff_gain_val_tab[n][i] * m[i]) >> ff_gain_exp_tab[n];

    if (v[0]) {
        for (i=0; i < BLOCKSIZE; i++)
            dest[i] = (s1[i]*v[0] + s2[i]*v[1] + s3[i]*v[2]) >> 12;
    } else {
        for (i=0; i < BLOCKSIZE; i++)
            dest[i] = (             s2[i]*v[1] + s3[i]*v[2]) >> 12;
    }
}

/**
 * Copy the last offset values of *source to *target. If those values are not
 * enough to fill the target buffer, fill it with another copy of those values.
 */
void ff_copy_and_dup(int16_t *target, const int16_t *source, int offset)
{
    source += BUFFERSIZE - offset;

    memcpy(target, source, FFMIN(BLOCKSIZE, offset)*sizeof(*target));
    if (offset < BLOCKSIZE)
        memcpy(target + offset, source, (BLOCKSIZE - offset)*sizeof(*target));
}

/**
 * Evaluate the reflection coefficients from the filter coefficients.
 *
 * @return 1 if one of the reflection coefficients is greater than
 *         4095, 0 if not.
 */
int ff_eval_refl(int *refl, const int16_t *coefs, AVCodecContext *avctx)
{
    int b, i, j;
    int buffer1[LPC_ORDER];
    int buffer2[LPC_ORDER];
    int *bp1 = buffer1;
    int *bp2 = buffer2;

    for (i=0; i < LPC_ORDER; i++)
        buffer2[i] = coefs[i];

    refl[LPC_ORDER-1] = bp2[LPC_ORDER-1];

    if ((unsigned) bp2[LPC_ORDER-1] + 0x1000 > 0x1fff) {
        av_log(avctx, AV_LOG_ERROR, "Overflow. Broken sample?\n");
        return 1;
    }

    for (i = LPC_ORDER-2; i >= 0; i--) {
        b = 0x1000-((bp2[i+1] * bp2[i+1]) >> 12);

        if (!b)
            b = -2;

        b = 0x1000000 / b;
        for (j=0; j <= i; j++) {
#if CONFIG_FTRAPV
            int a = bp2[j] - ((refl[i+1] * bp2[i-j]) >> 12);
            if((int)(a*(unsigned)b) != a*(int64_t)b)
                return 1;
#endif
            bp1[j] = ((bp2[j] - ((refl[i+1] * bp2[i-j]) >> 12)) * b) >> 12;
        }

        if ((unsigned) bp1[i] + 0x1000 > 0x1fff)
            return 1;

        refl[i] = bp1[i];

        FFSWAP(int *, bp1, bp2);
    }
    return 0;
}

/**
 * Evaluate the LPC filter coefficients from the reflection coefficients.
 * Does the inverse of the ff_eval_refl() function.
 */
void ff_eval_coefs(int *coefs, const int *refl)
{
    int buffer[LPC_ORDER];
    int *b1 = buffer;
    int *b2 = coefs;
    int i, j;

    for (i=0; i < LPC_ORDER; i++) {
        b1[i] = refl[i] << 4;

        for (j=0; j < i; j++)
            b1[j] = ((refl[i] * b2[i-j-1]) >> 12) + b2[j];

        FFSWAP(int *, b1, b2);
    }

    for (i=0; i < LPC_ORDER; i++)
        coefs[i] >>= 4;
}

void ff_int_to_int16(int16_t *out, const int *inp)
{
    int i;

    for (i = 0; i < LPC_ORDER; i++)
        *out++ = *inp++;
}

/**
 * Evaluate sqrt(x << 24). x must fit in 20 bits. This value is evaluated in an
 * odd way to make the output identical to the binary decoder.
 */
int ff_t_sqrt(unsigned int x)
{
    int s = 2;
    while (x > 0xfff) {
        s++;
        x >>= 2;
    }

    return ff_sqrt(x << 20) << s;
}

unsigned int ff_rms(const int *data)
{
    int i;
    unsigned int res = 0x10000;
    int b = LPC_ORDER;

    for (i = 0; i < LPC_ORDER; i++) {
        res = (((0x1000000 - data[i]*data[i]) >> 12) * res) >> 12;

        if (res == 0)
            return 0;

        while (res <= 0x3fff) {
            b++;
            res <<= 2;
        }
    }

    return ff_t_sqrt(res) >> b;
}

int ff_interp(RA144Context *ractx, int16_t *out, int a, int copyold, int energy)
{
    int work[LPC_ORDER];
    int b = NBLOCKS - a;
    int i;

    // Interpolate block coefficients from the this frame's forth block and
    // last frame's forth block.
    for (i = 0; i < LPC_ORDER; i++)
        out[i] = (a * ractx->lpc_coef[0][i] + b * ractx->lpc_coef[1][i])>> 2;

    if (ff_eval_refl(work, out, ractx->avctx)) {
        // The interpolated coefficients are unstable, copy either new or old
        // coefficients.
        ff_int_to_int16(out, ractx->lpc_coef[copyold]);
        return ff_rescale_rms(ractx->lpc_refl_rms[copyold], energy);
    } else {
        return ff_rescale_rms(ff_rms(work), energy);
    }
}

unsigned int ff_rescale_rms(unsigned int rms, unsigned int energy)
{
    return (rms * energy) >> 10;
}

/** inverse root mean square */
int ff_irms(const int16_t *data)
{
    unsigned int i, sum = 0;

    for (i=0; i < BLOCKSIZE; i++)
        sum += data[i] * data[i];

    if (sum == 0)
        return 0; /* OOPS - division by zero */

    return 0x20000000 / (ff_t_sqrt(sum) >> 8);
}

void ff_subblock_synthesis(RA144Context *ractx, const int16_t *lpc_coefs,
                           int cba_idx, int cb1_idx, int cb2_idx,
                           int gval, int gain)
{
    int16_t buffer_a[BLOCKSIZE];
    int16_t *block;
    int m[3];

    if (cba_idx) {
        cba_idx += BLOCKSIZE/2 - 1;
        ff_copy_and_dup(buffer_a, ractx->adapt_cb, cba_idx);
        m[0] = (ff_irms(buffer_a) * gval) >> 12;
    } else {
        m[0] = 0;
    }
    m[1] = (ff_cb1_base[cb1_idx] * gval) >> 8;
    m[2] = (ff_cb2_base[cb2_idx] * gval) >> 8;
    memmove(ractx->adapt_cb, ractx->adapt_cb + BLOCKSIZE,
            (BUFFERSIZE - BLOCKSIZE) * sizeof(*ractx->adapt_cb));

    block = ractx->adapt_cb + BUFFERSIZE - BLOCKSIZE;

    ff_add_wav(block, gain, cba_idx, m, cba_idx? buffer_a: NULL,
               ff_cb1_vects[cb1_idx], ff_cb2_vects[cb2_idx]);

    memcpy(ractx->curr_sblock, ractx->curr_sblock + BLOCKSIZE,
           LPC_ORDER*sizeof(*ractx->curr_sblock));

    if (ff_celp_lp_synthesis_filter(ractx->curr_sblock + LPC_ORDER, lpc_coefs,
                                    block, BLOCKSIZE, LPC_ORDER, 1, 0, 0xfff))
        memset(ractx->curr_sblock, 0, (LPC_ORDER+BLOCKSIZE)*sizeof(*ractx->curr_sblock));
}