FFmpeg: libavcodec/ra144.c Source File

00001 /*
00002  * Real Audio 1.0 (14.4K)
00003  * Copyright (c) 2003 the ffmpeg project
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #include <stdint.h>
00023 #include "avcodec.h"
00024 #include "celp_filters.h"
00025 #include "ra144.h"
00026 #include "libavutil/common.h"
00027 
00028 const int16_t ff_gain_val_tab[256][3] = {
00029     { 541, 956,  768}, { 877, 581,  568}, { 675,1574,  635}, {1248,1464,  668},
00030     {1246, 839, 1394}, {2560,1386,  991}, { 925, 687,  608}, {2208, 797, 1144},
00031     { 535, 832,  799}, { 762, 605, 1154}, { 832,1122, 1003}, {1180, 687, 1176},
00032     {1292, 901,  732}, {1656, 689,  896}, {1750,1248,  848}, {2284, 942, 1022},
00033     { 824,1472,  643}, { 517, 765,  512}, { 562,1816, 1522}, { 694,1826, 2700},
00034     { 704, 524,  672}, {1442, 757, 2232}, { 884, 551, 1266}, {2232,1007, 1692},
00035     { 932, 746,  777}, {1132, 822,  926}, {1226, 771,  611}, {2948,1342, 1008},
00036     {1302, 594, 1158}, {1602, 636, 1128}, {3408, 910, 1438}, {1996, 614,  575},
00037     { 665, 935,  628}, { 631,1192,  829}, { 644, 926, 1052}, { 879, 988, 1226},
00038     { 941,2768, 2772}, { 565,1344, 2304}, { 547, 628,  740}, { 639, 532, 1074},
00039     { 955,1208,  598}, {1124,1160,  900}, {1206, 899, 1242}, { 746, 533,  624},
00040     {1458,1028,  735}, {1706,1102,  692}, {1898,1018, 1004}, {2176, 988,  735},
00041     {1578, 782, 1642}, { 897, 516,  754}, {2068, 702, 1656}, {2344, 818, 1526},
00042     { 907, 652,  592}, {1056, 652,  642}, {2124,1416,  780}, {2664,1250,  727},
00043     {1894, 727, 1108}, {2196, 657,  981}, {4840, 920, 1704}, {4992,1238,  983},
00044     {2420, 909, 1094}, {2760, 935, 1032}, {2800, 612,  853}, {3068, 832,  574},
00045     { 523,1796,  923}, { 722,1916, 1382}, {1226,1542,  928}, { 758, 757,  584},
00046     { 512,1134,  577}, { 615,1276,  698}, { 574,2568, 2356}, { 993,2728, 3512},
00047     { 539, 890,  913}, { 694, 928, 1088}, { 805, 600, 1360}, {2160, 951, 3128},
00048     { 816, 950,  590}, { 955, 847,  811}, {1094, 883,  556}, {1304, 888,  604},
00049     { 863,1170,  855}, {1023, 997, 1032}, { 932,1228, 1280}, { 627, 564,  573},
00050     { 876, 900, 1448}, {1030, 857, 1792}, {1294, 953, 1758}, {1612, 854, 1714},
00051     {1090,1166,  631}, {1314,1202,  751}, {1480, 905,  795}, {1682,1016,  568},
00052     {1494,1178,  983}, { 878, 613,  526}, {1728,1446,  779}, {2136,1348,  774},
00053     { 950, 649,  939}, {1180, 703,  899}, {1236, 527, 1158}, {1450, 647,  972},
00054     {1282, 647,  707}, {1460, 663,  644}, {1614, 572,  578}, {3516,1222,  821},
00055     {2668, 729, 1682}, {3128, 585, 1502}, {3208, 733,  976}, {6800, 871, 1416},
00056     {3480, 743, 1408}, {3764, 899, 1170}, {3772, 632,  875}, {4092, 732,  638},
00057     {3112, 753, 2620}, {3372, 945, 1890}, {3768, 969, 2288}, {2016, 559,  854},
00058     {1736, 729,  787}, {1940, 686,  547}, {2140, 635,  674}, {4480,1272,  828},
00059     {3976, 592, 1666}, {4384, 621, 1388}, {4400, 801,  955}, {4656, 522,  646},
00060     {4848, 625, 1636}, {4984, 591,  874}, {5352, 535, 1001}, {11216,938, 1184},
00061     { 925,3280, 1476}, { 735,1580, 1088}, {1150,1576,  674}, { 655, 783,  528},
00062     { 527,2052, 1354}, { 782,1704, 1880}, { 578, 910, 1026}, { 692, 882, 1468},
00063     { 586, 683,  715}, { 739, 609,  717}, { 778, 773,  697}, { 922, 785,  813},
00064     { 766, 651,  984}, { 978, 596, 1030}, {1070, 757, 1080}, {1324, 687, 1178},
00065     {1108,2144,  979}, { 723, 982,  690}, { 936, 956,  527}, {1180,1002,  547},
00066     { 517,1306,  825}, { 832,1184,  974}, {1024, 957,  903}, {1262,1090,  906},
00067     {1028, 720,  649}, {1192, 679,  694}, {2468,1480,  979}, {2844,1370,  877},
00068     {1310, 835,  848}, {1508, 839,  698}, {1742,1030,  769}, {1910, 852,  573},
00069     {1280, 859, 1174}, {1584, 863, 1108}, {1686, 708, 1364}, {1942, 768, 1104},
00070     { 891, 536,  690}, {1016, 560,  663}, {2172, 870, 1348}, {2404, 999, 1170},
00071     {1890, 966,  889}, {2116, 912,  777}, {2296,1020,  714}, {4872,1844,  932},
00072     {2392, 778,  929}, {2604, 772,  744}, {2764, 957,  722}, {5832,1532,  984},
00073     {2188, 519, 1264}, {2332, 532,  922}, {5064, 995, 2412}, {2708, 571,  874},
00074     {2408, 545,  666}, {5016,1084,  875}, {5376, 983, 1196}, {5536, 979,  730},
00075     {5344, 634, 1744}, {5688, 706, 1348}, {5912, 977, 1190}, {6072, 905,  763},
00076     {6048, 582, 1526}, {11968,1013,1816}, {12864,937, 1900}, {12560,1086, 998},
00077     {1998, 684, 1884}, {2504, 633, 1992}, {1252, 567,  835}, {1478, 571,  973},
00078     {2620, 769, 1414}, {2808, 952, 1142}, {2908, 712, 1028}, {2976, 686,  741},
00079     {1462, 552,  714}, {3296, 991, 1452}, {1590, 615,  544}, {3480,1150,  824},
00080     {3212, 832,  923}, {3276, 839,  531}, {3548, 786,  852}, {3732, 764,  570},
00081     {5728, 906, 2616}, {6272, 804, 2252}, {3096, 535,  876}, {3228, 598,  649},
00082     {6536, 759, 1436}, {6648, 993,  846}, {6864, 567, 1210},{14016,1012, 1302},
00083     {3408, 548, 1098}, {7160,1008, 1742}, {7136,1000, 1182}, {7480,1032,  836},
00084     {7448, 612, 1552}, {7744, 614,  816}, {8384, 777, 1438}, {8784, 694,  786},
00085     { 882,1508, 1068}, { 597, 837,  766}, {1270, 954, 1408}, { 803, 550,  798},
00086     {1398,1308,  798}, {1848,1534,  738}, { 970, 675,  608}, {1264, 706,  684},
00087     {1716, 767, 1126}, {2108, 765, 1404}, {2236, 924, 1003}, {2472,1048,  611},
00088     { 999, 942,  963}, {1094, 857,  935}, {2936, 926, 1138}, {1934, 746,  551},
00089     {3336, 633, 1762}, {3764, 701, 1454}, {1890, 564,  636}, {4096,1126,  793},
00090     {3936, 556, 1140}, {3936, 540,  740}, {4216, 764,  874}, {8480,1328, 1014},
00091     {2184, 515, 1042}, {4432, 934, 1344}, {4784, 945, 1112}, {5016,1062,  733},
00092     {9216,1020, 2028}, {9968, 924, 1188}, {5424, 909, 1206}, {6512, 744, 1086}
00093 };
00094 
00095 const uint8_t ff_gain_exp_tab[256] = {
00096    15, 15, 15, 15, 15, 16, 14, 15, 14, 14, 14, 14, 14, 14, 14, 14,
00097    14, 13, 14, 14, 13, 14, 13, 14, 13, 13, 13, 14, 13, 13, 14, 13,
00098    13, 13, 13, 13, 14, 13, 12, 12, 13, 13, 13, 12, 13, 13, 13, 13,
00099    13, 12, 13, 13, 12, 12, 13, 13, 13, 13, 14, 14, 13, 13, 13, 13,
00100    13, 13, 13, 12, 12, 12, 13, 13, 12, 12, 12, 13, 12, 12, 12, 12,
00101    12, 12, 12, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 12, 12,
00102    12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 13, 13, 13, 13,
00103    13, 13, 13, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14,
00104    13, 12, 12, 11, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
00105    12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 11, 11, 11, 11,
00106    12, 12, 12, 12, 11, 11, 12, 12, 12, 12, 12, 13, 12, 12, 12, 13,
00107    12, 12, 13, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14,
00108    12, 12, 11, 11, 12, 12, 12, 12, 11, 12, 11, 12, 12, 12, 12, 12,
00109    13, 13, 12, 12, 13, 13, 13, 14, 12, 13, 13, 13, 13, 13, 13, 13,
00110    11, 10, 11, 10, 11, 11, 10, 10, 11, 11, 11, 11, 10,  9, 11, 10,
00111    12, 12, 11, 12, 12, 12, 12, 13, 11, 12, 12, 12, 13, 13, 12, 12
00112 };
00113 
00114 const int8_t ff_cb1_vects[128][40]={
00115     {
00116      38,  -4,  15,  -4,  14, -13,  12, -11,  -2,  -6,
00117      -6, -11, -45, -16, -11, -13,  -7,   6, -12,   4,
00118     -20,   3, -16,  12,  -1,  12,  46,  24,   0,  33,
00119      -3,   9, -12, -12,  -8,  -7,  17,  -6,   0,  -2,
00120     }, {
00121      60, -16,   3, -22,  10, -32,   0, -28, -17, -18,
00122      -3, -25, -37, -23, -10,   3,   2,   3,   0,   3,
00123     -14,   0, -14,  -1,   0,   2,  32,   9,  -1,  25,
00124       7,  13,  -5,  13,   8,   1,   2,   8, -10,   6,
00125     }, {
00126      27, -12,  28,  -2,   6,  -7,  15,   9, -11,   1,
00127     -13, -11, -40,   4, -29, -14, -19,  -5, -23,  -8,
00128     -30, -13, -17,   0, -14,  12,  34,  20,  -2,  25,
00129       2, -16,  -4, -12,  15,  16,  29,   7,  24,  10,
00130     }, {
00131      49, -24,  16, -20,   2, -26,   2,  -7, -25, -10,
00132     -11, -25, -32,  -3, -27,   2,  -8,  -8, -11,  -9,
00133     -24, -17, -16, -14, -13,   2,  20,   5,  -4,  17,
00134      14, -12,   3,  13,  33,  25,  14,  23,  15,  19,
00135     }, {
00136      46,  -6,  21,   8,  -2, -16,  -5,  -8, -11,   4,
00137       8,  15, -24,   4,  -2, -26,  -3, -16, -16, -14,
00138      -9,  -2,  -1,   4,  19,   7,  36,  17,   9,  13,
00139       0,  31,  -5, -12,   7,  -8,  11, -15, -13,  -4,
00140     }, {
00141      68, -18,   9,  -9,  -6, -35, -18, -25, -26,  -7,
00142      10,   1, -16,  -3,  -1,  -9,   6, -19,  -4, -15,
00143      -4,  -6,   0,  -8,  20,  -2,  23,   2,   7,   5,
00144      12,  35,   1,  13,  24,   0,  -3,   0, -22,   4,
00145     }, {
00146      35, -14,  34,  10, -10, -10,  -1,  12, -20,  12,
00147       0,  15, -18,  24, -20, -27, -14, -28, -27, -27,
00148     -20, -19,  -2,  -8,   5,   7,  25,  13,   5,   5,
00149       6,   5,   2, -12,  31,  15,  23,  -1,  12,   8,
00150     }, {
00151      57, -26,  22,  -7, -14, -28, -14,  -3, -35,   0,
00152       3,   1, -11,  16, -18, -10,  -4, -31, -15, -28,
00153     -14, -23,  -1, -21,   7,  -2,  11,  -1,   3,  -1,
00154      18,   9,  10,  13,  49,  24,   8,  14,   2,  16,
00155     }, {
00156      25,  15,  22,  11,  18,   4,  15, -22,   8,  -2,
00157     -17,  -9, -48, -20, -30, -17, -16,  11,  -1,  16,
00158       2,  10,  -5,  26,  -2,  -4,  22,   0,   2,  10,
00159      -6,  13, -14,  10, -23,   0,  10,  -2,   1,   0,
00160     }, {
00161      47,   3,  11,  -6,  15, -13,   2, -38,  -6, -13,
00162     -15, -22, -40, -28, -28,   0,  -5,   8,  10,  15,
00163       7,   7,  -4,  13,  -1, -14,   9, -14,   0,   2,
00164       4,  18,  -7,  36,  -6,   8,  -3,  13,  -7,   8,
00165     }, {
00166      14,   7,  36,  13,  10,  10,  18,   0,   0,   5,
00167     -25,  -8, -43,   0, -48, -18, -27,   0, -12,   3,
00168      -7,  -6,  -7,  13, -15,  -5,  11,  -3,   0,   2,
00169       0, -12,  -6,  10,   0,  23,  22,  11,  26,  12,
00170     }, {
00171      36,  -5,  24,  -4,   7,  -7,   6, -17, -14,  -5,
00172     -22, -22, -35,  -8, -46,  -1, -17,  -3,   0,   2,
00173      -2, -10,  -5,   0, -14, -15,  -2, -18,  -2,  -4,
00174      11,  -7,   1,  36,  18,  32,   7,  27,  17,  20,
00175     }, {
00176      33,  13,  29,  24,   1,   1,  -2, -18,   0,   9,
00177      -3,  17, -27,   0, -21, -30, -12, -11,  -5,  -2,
00178      12,   4,   9,  19,  18,  -9,  13,  -6,  11,  -8,
00179      -2,  35,  -8,  10,  -7,  -1,   4, -11, -10,  -2,
00180     }, {
00181      55,   1,  17,   6,  -1, -16, -15, -35, -15,  -2,
00182       0,   4, -19,  -8, -20, -13,  -1, -14,   7,  -3,
00183      18,   0,  10,   5,  19, -19,   0, -21,   8, -16,
00184       9,  39,   0,  36,  10,   7,  -9,   4, -20,   5,
00185     }, {
00186      22,   5,  42,  26,  -6,   8,   1,   2,  -9,  17,
00187     -10,  18, -21,  19, -39, -31, -23, -23, -16, -15,
00188       2, -12,   7,   6,   5,  -9,   1, -10,   7, -16,
00189       4,   9,   0,  10,  17,  22,  16,   2,  14,   9,
00190     }, {
00191      44,  -6,  30,   8,  -9, -10, -11, -14, -23,   5,
00192      -8,   4, -14,  12, -37, -14, -12, -26,  -4, -16,
00193       8, -16,   9,  -7,   6, -19, -12, -25,   5, -24,
00194      15,  13,   8,  36,  34,  31,   1,  18,   4,  18,
00195     }, {
00196      -3,  -5,  -9,  -7,  15,  -1,   5,  13,   2,  12,
00197       5,   2, -21, -23,  -2, -16,   0,   5,  -6,  13,
00198     -23,   3, -32,  10, -15,   8,  44,  28,   9,  37,
00199      -2,  13,  -9, -15, -12, -27,  -7, -12,   0, -11,
00200     }, {
00201      18, -17, -21, -25,  11, -19,  -6,  -3, -11,   0,
00202       7, -11, -13, -31,  -1,   0,   9,   1,   5,  12,
00203     -18,   0, -31,  -2, -13,  -1,  30,  14,   7,  29,
00204       9,  18,  -1,  10,   4, -18, -22,   3, -10,  -2,
00205     }, {
00206     -13, -13,   3,  -5,   7,   4,   9,  34,  -5,  20,
00207      -2,   3, -16,  -3, -20, -17, -11,  -7, -17,   0,
00208     -34, -13, -33,  -2, -28,   8,  32,  24,   5,  29,
00209       3, -12,   0, -15,  11,  -3,   3,   2,  24,   1,
00210     }, {
00211       8, -25,  -8, -23,   3, -13,  -3,  17, -20,   8,
00212       0, -10,  -8, -11, -18,   0,  -1, -10,  -5,   0,
00213     -28, -17, -32, -15, -26,  -1,  19,   9,   3,  21,
00214      15,  -7,   6,   9,  29,   5, -10,  17,  15,   9,
00215     }, {
00216       4,  -6,  -3,   5,  -1,  -4, -11,  16,  -6,  23,
00217      19,  29,   0,  -3,   6, -30,   3, -17, -10,  -5,
00218     -13,  -2, -17,   3,   5,   3,  35,  21,  17,  17,
00219       2,  35,  -2, -15,   3, -28, -13, -21, -13, -13,
00220     }, {
00221      26, -19, -15, -12,  -5, -22, -24,   0, -21,  12,
00222      21,  15,   8, -11,   7, -12,  14, -20,   2,  -6,
00223      -7,  -6, -16,  -9,   6,  -5,  21,   7,  15,  10,
00224      13,  39,   5,  10,  20, -19, -28,  -5, -22,  -5,
00225     }, {
00226      -5, -15,   9,   7,  -9,   2,  -8,  37, -14,  31,
00227      11,  29,   5,  16, -11, -30,  -7, -29, -21, -18,
00228     -23, -19, -18,  -9,  -7,   3,  23,  17,  14,   9,
00229       8,   9,   6, -15,  27,  -4,  -2,  -6,  12,  -1,
00230     }, {
00231      16, -27,  -2, -10, -13, -16, -20,  20, -29,  20,
00232      14,  16,  13,   8,  -9, -13,   2, -33,  -9, -19,
00233     -17, -23, -17, -22,  -6,  -6,   9,   2,  12,   2,
00234      20,  13,  13,  10,  45,   4, -16,   8,   2,   7,
00235     }, {
00236     -16,  14,  -2,   8,  20,  17,   9,   2,  14,  16,
00237      -6,   5, -24, -28, -21, -20,  -8,   9,   4,  25,
00238      -1,  11, -22,  24, -15,  -8,  21,   5,  11,  14,
00239      -5,  18, -11,   7, -27, -20, -14,  -7,   1,  -9,
00240     }, {
00241       6,   2, -14,  -9,  16,  -1,  -3, -14,   0,   5,
00242      -3,  -8, -16, -36, -19,  -3,   1,   6,  17,  24,
00243       4,   7, -21,  11, -14, -18,   7,  -9,   9,   7,
00244       6,  22,  -3,  33, -10, -11, -28,   7,  -7,   0,
00245     }, {
00246     -26,   6,  11,  10,  12,  23,  12,  23,   5,  24,
00247     -13,   5, -19,  -8, -38, -21, -20,  -2,  -6,  12,
00248     -11,  -5, -23,  11, -29,  -9,   9,   0,   7,   6,
00249       1,  -7,  -2,   7,  -3,   3,  -2,   6,  27,   3,
00250     }, {
00251      -4,  -6,   0,  -7,   8,   4,   0,   6,  -9,  13,
00252     -11,  -7, -11, -15, -37,  -4,  -9,  -5,   5,  11,
00253      -5,  -9, -22,  -1, -27, -18,  -4, -14,   5,   0,
00254      12,  -3,   4,  32,  14,  12, -17,  22,  17,  11,
00255     }, {
00256      -8,  12,   3,  21,   3,  14,  -8,   5,   4,  28,
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00312       7,   2,  21,  21,   8,   3,  10, -28,  -4, -31,
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00327     -20,  -7, -11,   4, -20,  -4, -12,   2,  -1,   0,
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00332     -17, -21,  -3,  -3, -19,  12,  -2,   0,  10,  -1,
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00347      -5,  19,  10,  24, -11, -17,  -8, -20,  -5, -19,
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00352      -3,   5,  18,  17, -10,   0,   1, -23,   6, -20,
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00357      10,   3,  10, -18,  24,  -3,  14,   7,   4,  10,
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00359      -9,  -3, -12, -36, -35, -30,  -2, -13,   2, -11,
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00362      12,  -9,  18, -26,  26,  14,  24,   4,  16,   9,
00363     -10,  -2, -26, -18, -26,   7,  -1,  15,  -1,  27,
00364       2,   0,  -4, -11, -17, -21, -16,   1,  -7,  -3,
00365     }, {
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00369      -2, -29,  -4, -36, -10,  -6,   9,   0,  27,   0,
00370     }, {
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00373     -20, -19, -27, -31, -39,   7, -13,  11,  -4,  19,
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00375     }, {
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00377      24,  30,  32,   1,  33, -16,  18, -14,   0,  -8,
00378      -6,  -4, -12, -12,  -6,  13,   2,  23,   8,  15,
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00380     }, {
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00382      26,  16,  40,  -6,  35,   1,  28, -17,  12,  -9,
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00384       6,  22,   1, -11,  -1, -21, -22,  -7, -19,  -5,
00385     }, {
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00387      16,  31,  37,  21,  16, -17,   6, -26, -10, -21,
00388     -16, -21, -13, -25, -19,  13,  -8,  19,   5,   7,
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00390     }, {
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00392      19,  17,  45,  14,  17,   0,  17, -30,   1, -22,
00393     -10, -25, -12, -38, -18,   3, -22,   4,   3,   0,
00394      13,  -3,  10, -11,  23,   2, -10,   7,   5,   7,
00395     }, {
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00397      -1,   6,   7, -23,   6,  -6,   5,  12,  15,  21,
00398       5,   8, -17,   9, -28,   0, -11,   6,   2,  12,
00399     -11,   0, -14, -13, -49, -22,  -8,  -9,   4,  -9,
00400     }, {
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00403      11,   5, -16,  -3, -26,  -9, -24,  -7,   0,   4,
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00405     }, {
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00407      -8,   7,  12,  -3, -11,  -7,  -5,   0,   4,   8,
00408      -4,  -8, -18,  -3, -41,   0, -22,   2,   0,   4,
00409      -5, -25,  -6, -14, -25,   1,   2,   4,  29,   2,
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00412      -6,  -6,  20, -10,  -9,   9,   4,  -2,  16,   7,
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00414       6, -21,   1,  11,  -7,  10, -11,  20,  20,  11,
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00417      12,  33,  29,  -3,  15, -20,   9,  -9,  11,   3,
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00419      -7,  22,  -7, -13, -33, -23, -14, -18,  -7, -12,
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00422      15,  19,  37, -11,  16,  -2,  20, -12,  23,   2,
00423      22,  -1,  -1, -11,  -5, -13, -34, -14,   8, -14,
00424       4,  26,   0,  11, -16, -14, -29,  -2, -17,  -3,
00425     }, {
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00427       5,  33,  34,  17,  -2, -20,  -1, -22,   0, -10,
00428       6, -14,  -3, -10, -20,  -4, -32,  -4,   7, -15,
00429       0,  -3,   0, -13,  -9,   0,  -3,  -4,  17,   0,
00430     }, {
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00432       7,  20,  42,   9,   0,  -3,   9, -25,  12, -10,
00433      12, -18,  -2, -24, -19, -13, -46, -19,   5, -22,
00434      10,   0,   8,  11,   8,   9, -17,  11,   7,   8,
00435     }, {
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00437      -7, -20, -42,  -9,   0,   3,  -9,  25, -12,  10,
00438     -12,  18,   2,  24,  19,  13,  46,  19,  -5,  22,
00439     -10,   0,  -8, -11,  -8,  -9,  17, -11,  -7,  -8,
00440     }, {
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00442      -5, -33, -34, -17,   2,  20,   1,  22,   0,  10,
00443      -6,  14,   3,  10,  20,   4,  32,   4,  -7,  15,
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00445     }, {
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00447     -15, -19, -37,  11, -16,   2, -20,  12, -23,  -2,
00448     -22,   1,   1,  11,   5,  13,  34,  14,  -8,  14,
00449      -4, -26,   0, -11,  16,  14,  29,   2,  17,   3,
00450     }, {
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00452     -12, -33, -29,   3, -15,  20,  -9,   9, -11,  -3,
00453     -16,  -2,   2,  -2,   7,   3,  20,   0, -10,   7,
00454       7, -22,   7,  13,  33,  23,  14,  18,   7,  12,
00455     }, {
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00457       6,   6, -20,  10,   9,  -9,  -4,   2, -16,  -7,
00458      -1,  12,  17,  16,  39,   9,  36,  12,   2,   3,
00459      -6,  21,  -1, -11,   7, -10,  11, -20, -20, -11,
00460     }, {
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00462       8,  -7, -12,   3,  11,   7,   5,   0,  -4,  -8,
00463       4,   8,  18,   3,  41,   0,  22,  -2,   0,  -4,
00464       5,  25,   6,  14,  25,  -1,  -2,  -4, -29,  -2,
00465     }, {
00466     -27, -16,  21,   6, -12,  -3,   9,  16,  -3,   2,
00467      -1,   7, -15,  31,  -7, -10, -16,  -9, -27, -21,
00468     -11,  -5,  16,   3,  26,   9,  24,   7,   0,  -4,
00469       0,  -4,   6, -11,  32,  14,  23,  -6,   5,   1,
00470     }, {
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00472       1,  -6,  -7,  23,  -6,   6,  -5, -12, -15, -21,
00473      -5,  -8,  17,  -9,  28,   0,  11,  -6,  -2, -12,
00474      11,   0,  14,  13,  49,  22,   8,   9,  -4,   9,
00475     }, {
00476     -37,  12,   9,   7,  17,  11,  26, -18,  25, -12,
00477     -19, -17, -45, -14, -17,   0, -17,  30,  -1,  22,
00478      10,  25,  12,  38,  18,  -3,  22,  -4,  -3,   0,
00479     -13,   3, -10,  11, -23,  -2,  10,  -7,  -5,  -7,
00480     }, {
00481     -15,   0,  -2, -10,  13,  -7,  14, -35,  10, -23,
00482     -16, -31, -37, -21, -16,  17,  -6,  26,  10,  21,
00483      16,  21,  13,  25,  19, -13,   8, -19,  -5,  -7,
00484      -1,   8,  -2,  36,  -5,   6,  -3,   8, -15,   1,
00485     }, {
00486     -48,   4,  23,   9,   9,  17,  30,   2,  16,  -3,
00487     -26, -16, -40,   6, -35,  -1, -28,  17, -12,   9,
00488       0,   8,  11,  25,   5,  -3,  10,  -8,  -6,  -7,
00489      -6, -22,  -1,  11,   1,  21,  22,   7,  19,   5,
00490     }, {
00491     -26,  -7,  11,  -8,   5,  -1,  17, -14,   1, -15,
00492     -24, -30, -32,  -1, -33,  16, -18,  14,   0,   8,
00493       6,   4,  12,  12,   6, -13,  -2, -23,  -8, -15,
00494       4, -17,   5,  36,  18,  30,   8,  22,  10,  14,
00495     }, {
00496     -30,  11,  15,  20,   0,   8,   9, -15,  15,   0,
00497      -5,   9, -23,   6,  -8, -13, -13,   7,  -5,   3,
00498      20,  19,  27,  31,  39,  -7,  13, -11,   4, -19,
00499      -8,  25,  -3,  11,  -7,  -2,   4, -16, -18,  -9,
00500     }, {
00501      -8,  -1,   3,   2,  -3, -10,  -3, -32,   1, -12,
00502      -2,  -4, -15,  -1,  -7,   3,  -2,   4,   6,   3,
00503      26,  15,  29,  17,  40, -17,   0, -26,   2, -27,
00504       2,  29,   4,  36,  10,   6,  -9,   0, -27,   0,
00505     }, {
00506     -40,   2,  29,  22,  -7,  14,  12,   5,   7,   7,
00507     -12,   9, -18,  26, -26, -14, -24,  -4, -16,  -9,
00508      10,   2,  26,  18,  26,  -7,   1, -15,   1, -27,
00509      -2,   0,   4,  11,  17,  21,  16,  -1,   7,   3,
00510     }, {
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00512     -10,  -3, -10,  18, -24,   3, -14,  -7,  -4, -10,
00513      16,  -1,  27,   4,  27, -17, -12, -30,   0, -35,
00514       9,   3,  12,  36,  35,  30,   2,  13,  -2,  11,
00515     }, {
00516     -66,  -8, -23, -11,  14,   5,  17,  16,  19,   2,
00517       3,  -5, -18, -17,  10,   0,  -1,  23,  -6,  20,
00518     -15,  18, -14,  22,   5,  10,  44,  23,   2,  26,
00519      -9,   3,  -4, -14, -12, -29,  -7, -16,  -7, -18,
00520     }, {
00521     -44, -20, -34, -29,  10, -13,   4,   0,   4,  -9,
00522       5, -19, -10, -24,  11,  17,   8,  20,   5,  19,
00523      -9,  14, -12,   9,   6,   0,  30,   9,   0,  19,
00524       2,   7,   2,  10,   5, -20, -21,  -1, -17,  -9,
00525     }, {
00526     -77, -16,  -9,  -9,   6,  11,  21,  37,  10,  10,
00527      -4,  -5, -13,   3,  -7,   0, -13,  11, -17,   6,
00528     -25,   1, -15,   9,  -7,   9,  32,  19,   0,  18,
00529      -2, -22,   3, -15,  12,  -5,   4,  -2,  17,  -5,
00530     }, {
00531     -55, -28, -21, -27,   2,  -7,   8,  20,  -4,  -1,
00532      -1, -18,  -5,  -4,  -5,  16,  -2,   8,  -5,   5,
00533     -19,  -2, -14,  -3,  -6,   0,  18,   4,  -2,  11,
00534       8, -18,  11,  10,  29,   3, -10,  13,   8,   3,
00535     }, {
00536     -58,  -9, -16,   1,  -2,   2,   0,  19,  10,  13,
00537      17,  21,   3,   3,  19, -12,   2,   0, -10,   1,
00538      -5,  12,   0,  15,  26,   5,  34,  16,  11,   7,
00539      -4,  25,   2, -14,   3, -29, -13, -25, -20, -20,
00540     }, {
00541     -36, -21, -28, -16,  -6, -16, -12,   2,  -4,   2,
00542      20,   7,  11,  -4,  20,   4,  12,  -2,   1,   0,
00543       0,   8,   2,   2,  27,  -4,  21,   2,   9,   0,
00544       6,  29,   9,  10,  21, -21, -28, -10, -29, -11,
00545     }, {
00546     -69, -17,  -3,   3, -10,   8,   3,  40,   1,  21,
00547      10,  21,   8,  23,   1, -13,  -8, -11, -21, -11,
00548     -15,  -4,   0,   2,  13,   5,  23,  12,   7,   0,
00549       1,   0,  10, -14,  28,  -5,  -1, -11,   5,  -7,
00550     }, {
00551     -47, -30, -15, -14, -14,  -9,  -9,  23, -13,  10,
00552      12,   7,  16,  15,   3,   3,   1, -14,  -9, -12,
00553      -9,  -8,   0, -10,  14,  -4,   9,  -2,   5,  -8,
00554      13,   3,  18,  10,  45,   3, -16,   4,  -4,   0,
00555     }, {
00556     -79,  11, -15,   4,  18,  23,  20,   5,  30,   7,
00557      -7,  -2, -21, -21,  -8,  -3, -10,  28,   4,  31,
00558       6,  25,  -3,  37,   4,  -7,  20,   0,   4,   4,
00559     -11,   7,  -6,   8, -27, -22, -14, -12,  -5, -16,
00560     }, {
00561     -57,   0, -27, -13,  14,   5,   7, -11,  15,  -4,
00562      -5, -16, -13, -29,  -6,  13,   0,  25,  16,  31,
00563      12,  22,  -2,  23,   6, -16,   7, -14,   2,  -3,
00564       0,  12,   0,  33,  -9, -13, -28,   3, -14,  -7,
00565     }, {
00566     -90,   3,  -2,   6,  10,  29,  24,  26,  21,  15,
00567     -15,  -2, -16,  -1, -25,  -4, -21,  16,  -6,  18,
00568      -3,   8,  -5,  24,  -8,  -7,   9,  -4,   1,  -3,
00569      -5, -18,   1,   7,  -2,   1,  -2,   1,  19,  -3,
00570     }, {
00571     -67,  -8, -14, -11,   7,  11,  11,   9,   7,   3,
00572     -13, -16,  -8,  -9, -24,  12, -10,  13,   5,  17,
00573       2,   4,  -3,  10,  -6, -17,  -4, -19,   0, -11,
00574       6, -13,   9,  33,  14,  10, -16,  17,  10,   4,
00575     }, {
00576     -71,  10,  -9,  17,   1,  20,   3,   8,  21,  18,
00577       6,  24,   0,  -1,   0, -16,  -6,   5,   0,  13,
00578      17,  19,  11,  29,  25, -11,  11,  -6,  13, -15,
00579      -7,  29,   0,   8, -11, -22, -20, -21, -17, -18,
00580     }, {
00581     -49,  -2, -21,   0,  -1,   2,  -9,  -8,   6,   6,
00582       8,  10,   8,  -9,   2,   0,   4,   2,  13,  12,
00583      23,  15,  12,  16,  26, -21,  -2, -21,  11, -23,
00584       4,  33,   7,  33,   6, -13, -34,  -5, -27, -10,
00585     }, {
00586     -82,   1,   4,  19,  -6,  27,   6,  29,  12,  26,
00587      -1,  24,   5,  18, -17, -17, -17,  -6, -10,   0,
00588       7,   2,   9,  16,  12, -11,   0, -11,   9, -23,
00589       0,   3,   8,   8,  13,   1,  -8,  -7,   7,  -6,
00590     }, {
00591     -60, -10,  -7,   1,  -9,   8,  -6,  13,  -2,  15,
00592       1,  10,  13,  11, -15,   0,  -6,  -9,   1,   0,
00593      13,  -1,  11,   3,  13, -21, -13, -26,   7, -31,
00594      10,   7,  16,  33,  31,  10, -22,   8,  -1,   2,
00595     }, {
00596      -3,   7,  -5,  -5,   8,  -2,  17,  -9,  18, -24,
00597      -2, -19, -10,  -4,  28,  17,   5,  28,  -2,   7,
00598      -4,  15,   7,   8,   6,  23,  13,  21, -14,  20,
00599     -17, -18, -11, -33, -30, -11,  23, -13,  -5,  -9,
00600     }, {
00601      18,  -4, -17, -23,   4, -20,   4, -26,   3, -36,
00602       0, -32,  -2, -12,  29,  34,  16,  24,  10,   6,
00603       0,  12,   8,  -4,   8,  13,   0,   6, -16,  12,
00604      -5, -13,  -3,  -7, -13,  -3,   8,   2, -14,   0,
00605     }, {
00606     -13,   0,   8,  -3,   0,   4,  21,  11,   9, -16,
00607     -10, -18,  -5,  16,  10,  16,  -5,  15, -13,  -5,
00608     -15,  -1,   6,  -4,  -6,  23,   2,  16, -17,  12,
00609     -10, -44,  -3, -33,  -6,  12,  34,   1,  20,   3,
00610     }, {
00611       8, -12,  -3, -21,  -3, -14,   8,  -5,  -4, -28,
00612      -7, -32,   2,   8,  12,  34,   4,  12,  -1,  -6,
00613      -9,  -4,   7, -17,  -4,  13, -11,   1, -19,   4,
00614       0, -39,   4,  -7,  11,  21,  20,  16,  10,  11,
00615     }, {
00616       4,   6,   0,   7,  -8,  -4,   0,  -6,   9, -13,
00617      11,   7,  11,  15,  37,   4,   9,   5,  -5, -11,
00618       5,   9,  22,   1,  27,  18,   4,  14,  -5,   0,
00619     -12,   3,  -4, -32, -14, -12,  17, -22, -17, -11,
00620     }, {
00621      26,  -6, -11, -10, -12, -23, -12, -23,  -5, -24,
00622      13,  -5,  19,   8,  38,  21,  20,   2,   6, -12,
00623      11,   5,  23, -11,  29,   9,  -9,   0,  -7,  -6,
00624      -1,   7,   2,  -7,   3,  -3,   2,  -6, -27,  -3,
00625     }, {
00626      -6,  -2,  14,   9, -16,   1,   3,  14,   0,  -5,
00627       3,   8,  16,  36,  19,   3,  -1,  -6, -17, -24,
00628      -4,  -7,  21, -11,  14,  18,  -7,   9,  -9,  -7,
00629      -6, -22,   3, -33,  10,  11,  28,  -7,   7,   0,
00630     }, {
00631      16, -14,   2,  -8, -20, -17,  -9,  -2, -14, -16,
00632       6,  -5,  24,  28,  21,  20,   8,  -9,  -4, -25,
00633       1, -11,  22, -24,  15,   8, -21,  -5, -11, -14,
00634       5, -18,  11,  -7,  27,  20,  14,   7,  -1,   9,
00635     }, {
00636     -16,  27,   2,  10,  13,  16,  20, -20,  29, -20,
00637     -14, -16, -13,  -8,   9,  13,  -2,  33,   9,  19,
00638      17,  23,  17,  22,   6,   6,  -9,  -2, -12,  -2,
00639     -20, -13, -13, -10, -45,  -4,  16,  -8,  -2,  -7,
00640     }, {
00641       5,  15,  -9,  -7,   9,  -2,   8, -37,  14, -31,
00642     -11, -29,  -5, -16,  11,  30,   7,  29,  21,  18,
00643      23,  19,  18,   9,   7,  -3, -23, -17, -14,  -9,
00644      -8,  -9,  -6,  15, -27,   4,   2,   6, -12,   1,
00645     }, {
00646     -26,  19,  15,  12,   5,  22,  24,   0,  21, -12,
00647     -21, -15,  -8,  11,  -7,  12, -14,  20,  -2,   6,
00648       7,   6,  16,   9,  -6,   5, -21,  -7, -15, -10,
00649     -13, -39,  -5, -10, -20,  19,  28,   5,  22,   5,
00650     }, {
00651      -4,   6,   3,  -5,   1,   4,  11, -16,   6, -23,
00652     -19, -29,   0,   3,  -6,  30,  -3,  17,  10,   5,
00653      13,   2,  17,  -3,  -5,  -3, -35, -21, -17, -17,
00654      -2, -35,   2,  15,  -3,  28,  13,  21,  13,  13,
00655     }, {
00656      -8,  25,   8,  23,  -3,  13,   3, -17,  20,  -8,
00657       0,  10,   8,  11,  18,   0,   1,  10,   5,   0,
00658      28,  17,  32,  15,  26,   1, -19,  -9,  -3, -21,
00659     -15,   7,  -6,  -9, -29,  -5,  10, -17, -15,  -9,
00660     }, {
00661      13,  13,  -3,   5,  -7,  -4,  -9, -34,   5, -20,
00662       2,  -3,  16,   3,  20,  17,  11,   7,  17,   0,
00663      34,  13,  33,   2,  28,  -8, -32, -24,  -5, -29,
00664      -3,  12,   0,  15, -11,   3,  -3,  -2, -24,  -1,
00665     }, {
00666     -18,  17,  21,  25, -11,  19,   6,   3,  11,   0,
00667      -7,  11,  13,  31,   1,   0,  -9,  -1,  -5, -12,
00668      18,   0,  31,   2,  13,   1, -30, -14,  -7, -29,
00669      -9, -18,   1, -10,  -4,  18,  22,  -3,  10,   2,
00670     }, {
00671       3,   5,   9,   7, -15,   1,  -5, -13,  -2, -12,
00672      -5,  -2,  21,  23,   2,  16,   0,  -5,   6, -13,
00673      23,  -3,  32, -10,  15,  -8, -44, -28,  -9, -37,
00674       2, -13,   9,  15,  12,  27,   7,  12,   0,  11,
00675     }, {
00676     -44,   6, -30,  -8,   9,  10,  11,  14,  23,  -5,
00677       8,  -4,  14, -12,  37,  14,  12,  26,   4,  16,
00678      -8,  16,  -9,   7,  -6,  19,  12,  25,  -5,  24,
00679     -15, -13,  -8, -36, -34, -31,  -1, -18,  -4, -18,
00680     }, {
00681     -22,  -5, -42, -26,   6,  -8,  -1,  -2,   9, -17,
00682      10, -18,  21, -19,  39,  31,  23,  23,  16,  15,
00683      -2,  12,  -7,  -6,  -5,   9,  -1,  10,  -7,  16,
00684      -4,  -9,   0, -10, -17, -22, -16,  -2, -14,  -9,
00685     }, {
00686     -55,  -1, -17,  -6,   1,  16,  15,  35,  15,   2,
00687       0,  -4,  19,   8,  20,  13,   1,  14,  -7,   3,
00688     -18,   0, -10,  -5, -19,  19,   0,  21,  -8,  16,
00689      -9, -39,   0, -36, -10,  -7,   9,  -4,  20,  -5,
00690     }, {
00691     -33, -13, -29, -24,  -1,  -1,   2,  18,   0,  -9,
00692       3, -17,  27,   0,  21,  30,  12,  11,   5,   2,
00693     -12,  -4,  -9, -19, -18,   9, -13,   6, -11,   8,
00694       2, -35,   8, -10,   7,   1,  -4,  11,  10,   2,
00695     }, {
00696     -36,   5, -24,   4,  -7,   7,  -6,  17,  14,   5,
00697      22,  22,  35,   8,  46,   1,  17,   3,   0,  -2,
00698       2,  10,   5,   0,  14,  15,   2,  18,   2,   4,
00699     -11,   7,  -1, -36, -18, -32,  -7, -27, -17, -20,
00700     }, {
00701     -14,  -7, -36, -13, -10, -10, -18,   0,   0,  -5,
00702      25,   8,  43,   0,  48,  18,  27,   0,  12,  -3,
00703       7,   6,   7, -13,  15,   5, -11,   3,   0,  -2,
00704       0,  12,   6, -10,   0, -23, -22, -11, -26, -12,
00705     }, {
00706     -47,  -3, -11,   6, -15,  13,  -2,  38,   6,  13,
00707      15,  22,  40,  28,  28,   0,   5,  -8, -10, -15,
00708      -7,  -7,   4, -13,   1,  14,  -9,  14,   0,  -2,
00709      -4, -18,   7, -36,   6,  -8,   3, -13,   7,  -8,
00710     }, {
00711     -25, -15, -22, -11, -18,  -4, -15,  22,  -8,   2,
00712      17,   9,  48,  20,  30,  17,  16, -11,   1, -16,
00713      -2, -10,   5, -26,   2,   4, -22,   0,  -2, -10,
00714       6, -13,  14, -10,  23,   0, -10,   2,  -1,   0,
00715     }, {
00716     -57,  26, -22,   7,  14,  28,  14,   3,  35,   0,
00717      -3,  -1,  11, -16,  18,  10,   4,  31,  15,  28,
00718      14,  23,   1,  21,  -7,   2, -11,   1,  -3,   1,
00719     -18,  -9, -10, -13, -49, -24,  -8, -14,  -2, -16,
00720     }, {
00721     -35,  14, -34, -10,  10,  10,   1, -12,  20, -12,
00722       0, -15,  18, -24,  20,  27,  14,  28,  27,  27,
00723      20,  19,   2,   8,  -5,  -7, -25, -13,  -5,  -5,
00724      -6,  -5,  -2,  12, -31, -15, -23,   1, -12,  -8,
00725     }, {
00726     -68,  18,  -9,   9,   6,  35,  18,  25,  26,   7,
00727     -10,  -1,  16,   3,   1,   9,  -6,  19,   4,  15,
00728       4,   6,   0,   8, -20,   2, -23,  -2,  -7,  -5,
00729     -12, -35,  -1, -13, -24,   0,   3,   0,  22,  -4,
00730     }, {
00731     -46,   6, -21,  -8,   2,  16,   5,   8,  11,  -4,
00732      -8, -15,  24,  -4,   2,  26,   3,  16,  16,  14,
00733       9,   2,   1,  -4, -19,  -7, -36, -17,  -9, -13,
00734       0, -31,   5,  12,  -7,   8, -11,  15,  13,   4,
00735     }, {
00736     -49,  24, -16,  20,  -2,  26,  -2,   7,  25,  10,
00737      11,  25,  32,   3,  27,  -2,   8,   8,  11,   9,
00738      24,  17,  16,  14,  13,  -2, -20,  -5,   4, -17,
00739     -14,  12,  -3, -13, -33, -25, -14, -23, -15, -19,
00740     }, {
00741     -27,  12, -28,   2,  -6,   7, -15,  -9,  11,  -1,
00742      13,  11,  40,  -4,  29,  14,  19,   5,  23,   8,
00743      30,  13,  17,   0,  14, -12, -34, -20,   2, -25,
00744      -2,  16,   4,  12, -15, -16, -29,  -7, -24, -10,
00745     }, {
00746     -60,  16,  -3,  22, -10,  32,   0,  28,  17,  18,
00747       3,  25,  37,  23,  10,  -3,  -2,  -3,   0,  -3,
00748      14,   0,  14,   1,   0,  -2, -32,  -9,   1, -25,
00749      -7, -13,   5, -13,  -8,  -1,  -2,  -8,  10,  -6,
00750     }, {
00751     -38,   4, -15,   4, -14,  13, -12,  11,   2,   6,
00752       6,  11,  45,  16,  11,  13,   7,  -6,  12,  -4,
00753      20,  -3,  16, -12,   1, -12, -46, -24,   0, -33,
00754       3,  -9,  12,  12,   8,   7, -17,   6,   0,   2
00755     }
00756 };
00757 
00758 const int8_t ff_cb2_vects[128][40]={
00759     {
00760      73, -32, -60, -15, -26,  59,   2, -33,  30, -10,
00761      -3, -17,   8,  30,  -1, -26,  -4, -22,  10,  16,
00762     -36,  -5, -11,  56,  37,   6, -10,  -5, -13,  -3,
00763       6,  -5,  11,   4, -19,  -5, -16,  41,  24,  13,
00764     }, {
00765       4, -11, -37,  23,  -5,  46,  -2, -29,  -5, -39,
00766     -21,  -9,   0,  49,  12,  -9, -16, -26,  22,  15,
00767     -45, -20,  -5,  40,  22,  17, -26,  31, -14,   2,
00768     -14,  10,  30,  20, -27,  -9, -39,  39,  18,   5,
00769     }, {
00770      34, -25, -48, -28, -11,  34,  -2, -41,   9,  -7,
00771     -17,  21,  20,  24, -17, -33,   0, -24,  10,  42,
00772       3,  -5,  10,  42,  11,   8,  -3,   3,  16,   9,
00773      22,  -2,   0, -33, -10,  18,   7,  58,  10,  28,
00774     }, {
00775     -34,  -4, -25,  10,   9,  21,  -7, -36, -26, -36,
00776     -35,  28,  12,  42,  -3, -16, -12, -28,  21,  42,
00777      -5, -21,  16,  26,  -4,  19, -19,  39,  15,  15,
00778       1,  13,  19, -17, -17,  14, -15,  55,   4,  19,
00779     }, {
00780      28, -20, -51, -14,  -6,   7,   0, -26,  27,  -4,
00781      18, -40,  -6,  16,  -1, -15,   0, -55,  -5, -16,
00782     -19,  14,  -3,  49,  14,   1, -22, -30, -12,   0,
00783      24,  15,   9, -17, -45, -29,   4,  28,  51,  35,
00784     }, {
00785     -40,   0, -28,  24,  14,  -5,  -4, -21,  -7, -33,
00786       0, -32, -15,  35,  12,   1, -11, -58,   5, -16,
00787     -28,   0,   1,  33,   0,  11, -39,   5, -14,   6,
00788       3,  31,  28,  -1, -53, -33, -19,  25,  46,  26,
00789     }, {
00790     -11, -14, -39, -27,   9, -17,  -4, -33,   6,   0,
00791       4,  -1,   5,  10, -17, -22,   5, -57,  -5,   9,
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01176       3,  63,   3,  12, -30,  -5,   3,  12,  31,   0,
01177      24, -49,   8,  -9,   1,  33,  12,  29, -27,  18,
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01181      58,  -5, -15, -13, -29,  -3,  16, -13,   4, -57,
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01186      39,   2, -23,   4, -15,  12,   3, -17,  15, -58,
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01188     -35,  -3, -25,  33, -32, -36, -17,  -7,  15,   9,
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01197      41, -30,  16, -16, -20,  28,   0,   3, -26,  22,
01198     -19,   0, -36,  -4, -22, -12,   6,   9,   1,  24,
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01204     }, {
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01207     -33, -49,  -5, -24,  33,  12,  17,  35, -52,  -6,
01208     -38, -22,  -7,  72,  -7,  -3,   0,  -6, -25, -30,
01209     }, {
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01211      10,  36,  18, -33, -19, -19,  31,  44,  27,  15,
01212      16, -34,  11, -22,  22,   4,  40,   7, -21,   0,
01213      -1, -35, -36,  18,  10,  24,  46,  12, -34,  -8,
01214     }, {
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01216      -8,  44,   9, -14,  -5,  -2,  19,  40,  38,  15,
01217       7, -50,  17, -38,   7,  14,  24,  43, -22,   6,
01218     -22, -19, -17,  34,   2,  20,  23,  10, -39, -16,
01219     }, {
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01221      46, -24,  -9, -40,  -3,  -1,  32,  13,  11, -43,
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01224     }, {
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01227     -16, -30,   2, -31,  11,   6,   5,   9, -52,  -2,
01228     -20,   0,  -8,  50, -33, -27,  19, -19,   1,  -9,
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01232      32, -15,  19, -29,   0,  -1,  28, -18, -20,   4,
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01234     }, {
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01236      13,  21,  -5, -28,  -5,   7,  24,   8,  22, -17,
01237      23, -30,  25, -45, -15,   9,  11,  18, -22,  10,
01238      -4,   2, -19,  12, -23,  -3,  43,  -2, -12,   4,
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01241      13,  -9,  -6,  11,   2,  24, -13,   3,  -7, -11,
01242      -4,   4, -42,  25,  31,  -1,  -8, -29,  -6,  17,
01243     -19,   2, -10,  -6,  38,  22, -42, -19,  -6, -11,
01244     }, {
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01246      -4,  -2, -14,  29,  16,  40, -26,   0,   3, -12,
01247     -13, -10, -36,   9,  15,   8, -24,   6,  -7,  22,
01248     -40,  17,   8,   9,  31,  18, -66, -22, -11, -19,
01249     }, {
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01251       0,  29,   6,   4, -13,  17,  -9,   1,  -8,  14,
01252      35,   3, -19,  11,   4,   0,  -1, -21,  23,  30,
01253      -3,   5, -20, -44,  48,  46, -19,  -3, -20,   3,
01254     }, {
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01256     -18,  36,  -2,  22,   0,  33, -21,  -2,   3,  13,
01257      26, -11, -14,  -4, -10,  10, -18,  14,  22,  36,
01258     -24,  21,  -1, -28,  40,  42, -42,  -5, -25,  -5,
01259     }, {
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01261      35, -32, -21,  -3,   2,  35,  -8, -29, -24, -44,
01262      12,  24, -34,  18,   8,  -7, -21, -55,  -5,  21,
01263      -2,  23, -11, -28,  13,  -1, -22, -33,  21,  10,
01264     }, {
01265     -41,  18,   2,  21,  45,  24,  30, -21, -33, -24,
01266      17, -24, -29,  15,  16,  51, -21, -33, -13, -45,
01267       3,   8, -28,   2,  -7,   2, -37, -19,  -7,  27,
01268     -22,  39,   7, -12,   5,  -5, -45, -35,  15,   1,
01269     }, {
01270     -12,   4,  -8, -29,  39,  12,  30, -33, -19,   8,
01271      21,   6,  -8,  -9, -13,  28,  -4, -31, -24, -18,
01272      52,  23, -12,   4, -18,  -5, -14, -47,  24,  34,
01273      14,  27, -22, -66,  22,  22,   1, -16,   6,  24,
01274     }, {
01275     -81,  25,  14,   8,  61,   0,  25, -28, -54, -20,
01276       3,  14, -17,   8,   0,  44, -16, -35, -13, -18,
01277      43,   7,  -6, -11, -33,   4, -30, -11,  22,  40,
01278      -6,  43,  -3, -50,  14,  18, -22, -18,   1,  16,
01279     }, {
01280      77,  -2, -11,   1,  -7,  47,  52,  -5,  29,  33,
01281       1, -28,   0, -15,  28,  26,   2,  30,   0,   2,
01282     -22,   4, -33,  -3,  36, -21,   3, -15,  -2,   5,
01283      -4,   4,   6,   9,  37,  31,  -5, -32, -20, -30,
01284     }, {
01285       8,  17,  10,  40,  13,  34,  47,   0,  -5,   4,
01286     -16, -21,  -8,   2,  42,  43, -10,  26,  10,   2,
01287     -31, -11, -27, -19,  21, -10, -12,  20,  -3,  11,
01288     -25,  20,  25,  25,  29,  28, -28, -34, -25, -38,
01289     }, {
01290      37,   3,   0, -10,   7,  22,  48, -12,   8,  36,
01291     -12,   9,  12, -22,  12,  19,   6,  28,   0,  29,
01292      18,   3, -11, -17,  10, -18,  10,  -7,  27,  18,
01293      11,   7,  -3, -28,  47,  55,  18, -15, -34, -16,
01294     }, {
01295     -31,  24,  23,  27,  29,   9,  43,  -8, -26,   7,
01296     -30,  17,   4,  -3,  26,  35,  -5,  24,  10,  28,
01297       9, -12,  -5, -33,  -5,  -8,  -5,  29,  26,  24,
01298      -9,  23,  14, -12,  39,  52,  -5, -18, -39, -24,
01299     }, {
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01301      23, -51, -15, -30,  27,  37,   7,  -1, -17, -29,
01302      -5,  23, -25, -10,  14, -26,  -8, -41,  -1,   9,
01303      13,  26,   5, -12,  12,   7,  14, -45,   6,  -9,
01304     }, {
01305     -36,  29,  19,  41,  34, -18,  45,   6,  -8,  10,
01306       5, -43, -23, -11,  42,  53,  -5,  -5,  -6, -30,
01307     -14,   8, -20, -26,  -1, -16, -25,  -4,  -3,  15,
01308      -7,  41,  23,   3,   4,   3,  -8, -48,   1, -17,
01309     }, {
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01311       9, -12,  -2, -36,  12,  30,  11,  -3, -17,  -3,
01312      34,  22,  -3, -24, -12, -24,  -2, -32,  28,  22,
01313      29,  29,  -5, -50,  21,  31,  38, -29,  -7,   5,
01314     }, {
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01316      -8,  -5, -10, -18,  26,  46,   0,  -7,  -6,  -3,
01317      25,   7,   2, -40, -28, -14, -18,   3,  27,  28,
01318       8,  45,  13, -34,  13,  27,  15, -31, -12,  -3,
01319     }, {
01320      74, -17,   0, -31, -18,  73,  -5,   0,   3,  -5,
01321      25,  12,  -3,  -1, -22,   3,  -9,  33, -12, -24,
01322       6,   2, -33,   9,  21,   5,  20, -27, -19,  -7,
01323     -34, -37, -34,  22,  44,   0, -41, -29, -17, -21,
01324     }, {
01325       5,   3,  21,   7,   2,  60, -10,   5, -32, -34,
01326       7,  20, -11,  16,  -8,  20, -21,  29,  -1, -24,
01327      -2, -13, -27,  -6,   5,  15,   3,   8, -21,  -1,
01328     -55, -21, -15,  38,  37,  -3, -65, -32, -23, -30,
01329     }, {
01330      35, -10,  11, -44,  -3,  48, -10,  -6, -17,  -2,
01331      11,  51,   8,  -8, -38,  -3,  -4,  31, -12,   2,
01332      46,   1, -10,  -4,  -5,   7,  26, -19,  10,   5,
01333     -18, -34, -45, -15,  54,  24, -18, -13, -31,  -7,
01334     }, {
01335     -33,  10,  34,  -5,  17,  35, -15,  -1, -53, -30,
01336      -6,  59,   0,  10, -24,  13, -17,  27,  -1,   1,
01337      37, -13,  -4, -20, -20,  18,  10,  16,   8,  11,
01338     -39, -18, -26,   0,  46,  20, -41, -15, -37, -15,
01339     }, {
01340      29,  -5,   7, -30,   1,  21,  -7,   7,   0,   0,
01341      47,  -9, -18, -15, -22,  14,  -4,   0, -28, -57,
01342      23,  21, -25,   2,  -1,   0,   7, -53, -19,  -3,
01343     -17, -15, -36,   0,  19, -24, -21, -43,   9,   0,
01344     }, {
01345     -39,  14,  30,   8,  22,   8, -12,  12, -34, -27,
01346      29,  -2, -26,   2,  -8,  31, -16,  -3, -17, -57,
01347      14,   6, -19, -13, -16,  10,  -8, -17, -20,   2,
01348     -38,   0, -17,  16,  11, -27, -44, -45,   4,  -8,
01349     }, {
01350      -9,   1,  20, -43,  17,  -3, -12,   0, -20,   4,
01351      33,  29,  -6, -22, -38,   7,   0,  -1, -29, -30,
01352      63,  21,  -3, -11, -27,   1,  14, -45,  10,   9,
01353      -1, -12, -47, -37,  28,   0,   2, -26,  -4,  13,
01354     }, {
01355     -78,  21,  43,  -4,  38, -17, -17,   5, -55, -24,
01356      15,  36, -14,  -4, -24,  24, -12,  -5, -17, -31,
01357      54,   5,   2, -27, -43,  12,  -2,  -9,   9,  15,
01358     -22,   3, -28, -21,  20,  -3, -20, -28,  -9,   5,
01359     }, {
01360      80,  -6,  16, -11, -30,  30,   9,  28,  28,  29,
01361      13,  -6,   2, -28,   3,   5,   7,  60,  -5,  -9,
01362     -11,   1, -24, -19,  27, -13,  32, -13, -15, -19,
01363     -19, -35, -17,  39,  43,   9,  -4, -42, -32, -41,
01364     }, {
01365      11,  14,  39,  27,  -9,  17,   4,  33,  -6,   0,
01366      -4,   1,  -5, -10,  17,  22,  -5,  57,   5,  -9,
01367     -20, -13, -18, -35,  11,  -3,  16,  22, -17, -13,
01368     -40, -19,   1,  55,  35,   5, -27, -44, -37, -49,
01369     }, {
01370      40,   0,  28, -24, -14,   5,   4,  21,   7,  33,
01371       0,  32,  15, -35, -12,  -1,  11,  58,  -5,  16,
01372      28,   0,  -1, -33,   0, -11,  39,  -5,  14,  -6,
01373      -3, -31, -28,   1,  53,  33,  19, -25, -46, -26,
01374     }, {
01375     -28,  20,  51,  14,   6,  -7,   0,  26, -27,   4,
01376     -18,  40,   6, -16,   1,  15,   0,  55,   5,  16,
01377      19, -14,   3, -49, -14,  -1,  22,  30,  12,   0,
01378     -24, -15,  -9,  17,  45,  29,  -4, -28, -51, -35,
01379     }, {
01380      34,   4,  25, -10,  -9, -21,   7,  36,  26,  36,
01381      35, -28, -12, -42,   3,  16,  12,  28, -21, -42,
01382       5,  21, -16, -26,   4, -19,  19, -39, -15, -15,
01383      -1, -13, -19,  17,  17, -14,  15, -55,  -4, -19,
01384     }, {
01385     -34,  25,  48,  28,  11, -34,   2,  41,  -9,   7,
01386      17, -21, -20, -24,  17,  33,   0,  24, -10, -42,
01387      -3,   5, -10, -42, -11,  -8,   3,  -3, -16,  -9,
01388     -22,   2,   0,  33,  10, -18,  -7, -58, -10, -28,
01389     }, {
01390      -4,  11,  37, -23,   5, -46,   2,  29,   5,  39,
01391      21,   9,   0, -49, -12,   9,  16,  26, -22, -15,
01392      45,  20,   5, -40, -22, -17,  26, -31,  14,  -2,
01393      14, -10, -30, -20,  27,   9,  39, -39, -18,  -5,
01394     }, {
01395     -73,  32,  60,  15,  26, -59,  -2,  33, -30,  10,
01396       3,  17,  -8, -30,   1,  26,   4,  22, -10, -16,
01397      36,   5,  11, -56, -37,  -6,  10,   5,  13,   3,
01398      -6,   5, -11,  -4,  19,   5,  16, -41, -24, -13
01399     }
01400 };
01401 
01402 const uint16_t ff_cb1_base[128]={
01403     19657, 18474, 18365, 17520, 21048, 18231, 18584, 16671,
01404     20363, 19069, 19409, 18430, 21844, 18753, 19613, 17411,
01405     20389, 21772, 20129, 21702, 20978, 20472, 19627, 19387,
01406     21477, 23134, 21841, 23919, 22089, 21519, 21134, 20852,
01407     19675, 17821, 19044, 17477, 19986, 16955, 18446, 16086,
01408     21138, 18899, 20952, 18929, 21452, 17833, 20104, 17159,
01409     19770, 20056, 20336, 20866, 19329, 18217, 18908, 18004,
01410     21556, 21948, 23079, 23889, 20922, 19544, 20984, 19781,
01411     19781, 20984, 19544, 20922, 23889, 23079, 21948, 21556,
01412     18004, 18908, 18217, 19329, 20866, 20336, 20056, 19770,
01413     17159, 20104, 17833, 21452, 18929, 20952, 18899, 21138,
01414     16086, 18446, 16955, 19986, 17477, 19044, 17821, 19675,
01415     20852, 21134, 21519, 22089, 23919, 21841, 23134, 21477,
01416     19387, 19627, 20472, 20978, 21702, 20129, 21772, 20389,
01417     17411, 19613, 18753, 21844, 18430, 19409, 19069, 20363,
01418     16671, 18584, 18231, 21048, 17520, 18365, 18474, 19657,
01419 };
01420 
01421 const uint16_t ff_cb2_base[128]={
01422     12174, 13380, 13879, 13832, 13170, 13227, 13204, 12053,
01423     12410, 13988, 14348, 14631, 13100, 13415, 13224, 12268,
01424     11982, 13825, 13499, 14210, 13877, 14788, 13811, 13109,
01425     11449, 13275, 12833, 13717, 12728, 13696, 12759, 12405,
01426     10230, 12185, 11628, 13161, 11762, 13458, 12312, 12818,
01427     10443, 12773, 12011, 14020, 11818, 13825, 12453, 13226,
01428     10446, 13162, 11881, 14300, 12859, 16288, 13490, 15053,
01429     10155, 12820, 11519, 13973, 12041, 15081, 12635, 14198,
01430     14198, 12635, 15081, 12041, 13973, 11519, 12820, 10155,
01431     15053, 13490, 16288, 12859, 14300, 11881, 13162, 10446,
01432     13226, 12453, 13825, 11818, 14020, 12011, 12773, 10443,
01433     12818, 12312, 13458, 11762, 13161, 11628, 12185, 10230,
01434     12405, 12759, 13696, 12728, 13717, 12833, 13275, 11449,
01435     13109, 13811, 14788, 13877, 14210, 13499, 13825, 11982,
01436     12268, 13224, 13415, 13100, 14631, 14348, 13988, 12410,
01437     12053, 13204, 13227, 13170, 13832, 13879, 13380, 12174,
01438 };
01439 
01440 const int16_t ff_energy_tab[32]={
01441         0,    16,    20,    25,    32,    41,    51,    65,
01442        81,   103,   129,   163,   205,   259,   326,   410,
01443       516,   650,   819,  1031,  1298,  1634,  2057,  2590,
01444      3261,  4105,  5168,  6507,  8192, 10313, 12983, 16345
01445 };
01446 
01447 static const int16_t lpc_refl_cb1[64]={
01448     -4041, -4018, -3998, -3977, -3954, -3930, -3906, -3879,
01449     -3852, -3825, -3795, -3764, -3731, -3699, -3666, -3631,
01450     -3594, -3555, -3513, -3468, -3420, -3372, -3321, -3268,
01451     -3212, -3153, -3090, -3021, -2944, -2863, -2772, -2676,
01452     -2565, -2445, -2328, -2202, -2072, -1941, -1808, -1660,
01453     -1508, -1348, -1185,  -994,  -798,  -600,  -374,  -110,
01454       152,   447,   720,   982,  1229,  1456,  1682,  1916,
01455      2130,  2353,  2595,  2853,  3118,  3363,  3588,  3814
01456 };
01457 
01458 static const int16_t lpc_refl_cb2[32]={
01459     -3091, -2386, -1871, -1425, -1021,  -649,  -316,   -20,
01460       267,   544,   810,  1065,  1305,  1534,  1756,  1970,
01461      2171,  2359,  2536,  2700,  2854,  2996,  3133,  3263,
01462      3386,  3499,  3603,  3701,  3789,  3870,  3947,  4020
01463 };
01464 
01465 static const int16_t lpc_refl_cb3[32]={
01466     -3525, -3295, -3081, -2890, -2696, -2511, -2328, -2149,
01467     -1979, -1817, -1658, -1498, -1341, -1188, -1032,  -876,
01468      -721,  -561,  -394,  -228,   -54,   119,   296,   484,
01469       683,   895,  1123,  1373,  1651,  1965,  2360,  2854
01470 };
01471 
01472 static const int16_t lpc_refl_cb4[16]={
01473     -1845, -1057,  -522,   -77,   301,   647,   975,  1285,
01474      1582,  1873,  2163,  2452,  2735,  3017,  3299,  3569
01475 };
01476 
01477 static const int16_t lpc_refl_cb5[16]={
01478     -2691, -2187, -1788, -1435, -1118,  -837,  -571,  -316,
01479       -59,   201,   470,   759,  1077,  1457,  1908,  2495
01480 };
01481 
01482 static const int16_t lpc_refl_cb6[8]={
01483     -1372,  -474,   133,   632,  1100,  1571,  2075,  2672
01484 };
01485 
01486 static const int16_t lpc_refl_cb7[8]={
01487     -2389, -1787, -1231,  -717,  -239,   234,   770,  1474
01488 };
01489 
01490 static const int16_t lpc_refl_cb8[8]={
01491     -1569,  -864,  -296,   200,   670,  1151,  1709,  2385
01492 };
01493 
01494 static const int16_t lpc_refl_cb9[8]={
01495     -2200, -1608, -1062,  -569,  -120,   338,   863,  1621
01496 };
01497 
01498 static const int16_t lpc_refl_cb10[4]={
01499      -617,   190,   802,  1483
01500 };
01501 
01502 const int16_t * const ff_lpc_refl_cb[10]={
01503     lpc_refl_cb1, lpc_refl_cb2, lpc_refl_cb3, lpc_refl_cb4, lpc_refl_cb5,
01504     lpc_refl_cb6, lpc_refl_cb7, lpc_refl_cb8, lpc_refl_cb9, lpc_refl_cb10
01505 };
01506 
01507 static void ff_add_wav(int16_t *dest, int n, int skip_first, int *m, const int16_t *s1,
01508                        const int8_t *s2, const int8_t *s3)
01509 {
01510     int i;
01511     int v[3];
01512 
01513     v[0] = 0;
01514     for (i=!skip_first; i<3; i++)
01515         v[i] = (ff_gain_val_tab[n][i] * m[i]) >> ff_gain_exp_tab[n];
01516 
01517     if (v[0]) {
01518         for (i=0; i < BLOCKSIZE; i++)
01519             dest[i] = (s1[i]*v[0] + s2[i]*v[1] + s3[i]*v[2]) >> 12;
01520     } else {
01521         for (i=0; i < BLOCKSIZE; i++)
01522             dest[i] = (             s2[i]*v[1] + s3[i]*v[2]) >> 12;
01523     }
01524 }
01525 
01530 void ff_copy_and_dup(int16_t *target, const int16_t *source, int offset)
01531 {
01532     source += BUFFERSIZE - offset;
01533 
01534     memcpy(target, source, FFMIN(BLOCKSIZE, offset)*sizeof(*target));
01535     if (offset < BLOCKSIZE)
01536         memcpy(target + offset, source, (BLOCKSIZE - offset)*sizeof(*target));
01537 }
01538 
01545 int ff_eval_refl(int *refl, const int16_t *coefs, AVCodecContext *avctx)
01546 {
01547     int b, i, j;
01548     int buffer1[LPC_ORDER];
01549     int buffer2[LPC_ORDER];
01550     int *bp1 = buffer1;
01551     int *bp2 = buffer2;
01552 
01553     for (i=0; i < LPC_ORDER; i++)
01554         buffer2[i] = coefs[i];
01555 
01556     refl[LPC_ORDER-1] = bp2[LPC_ORDER-1];
01557 
01558     if ((unsigned) bp2[LPC_ORDER-1] + 0x1000 > 0x1fff) {
01559         av_log(avctx, AV_LOG_ERROR, "Overflow. Broken sample?\n");
01560         return 1;
01561     }
01562 
01563     for (i = LPC_ORDER-2; i >= 0; i--) {
01564         b = 0x1000-((bp2[i+1] * bp2[i+1]) >> 12);
01565 
01566         if (!b)
01567             b = -2;
01568 
01569         b = 0x1000000 / b;
01570         for (j=0; j <= i; j++)
01571             bp1[j] = ((bp2[j] - ((refl[i+1] * bp2[i-j]) >> 12)) * b) >> 12;
01572 
01573         if ((unsigned) bp1[i] + 0x1000 > 0x1fff)
01574             return 1;
01575 
01576         refl[i] = bp1[i];
01577 
01578         FFSWAP(int *, bp1, bp2);
01579     }
01580     return 0;
01581 }
01582 
01587 void ff_eval_coefs(int *coefs, const int *refl)
01588 {
01589     int buffer[LPC_ORDER];
01590     int *b1 = buffer;
01591     int *b2 = coefs;
01592     int i, j;
01593 
01594     for (i=0; i < LPC_ORDER; i++) {
01595         b1[i] = refl[i] << 4;
01596 
01597         for (j=0; j < i; j++)
01598             b1[j] = ((refl[i] * b2[i-j-1]) >> 12) + b2[j];
01599 
01600         FFSWAP(int *, b1, b2);
01601     }
01602 
01603     for (i=0; i < LPC_ORDER; i++)
01604         coefs[i] >>= 4;
01605 }
01606 
01607 void ff_int_to_int16(int16_t *out, const int *inp)
01608 {
01609     int i;
01610 
01611     for (i = 0; i < LPC_ORDER; i++)
01612         *out++ = *inp++;
01613 }
01614 
01619 int ff_t_sqrt(unsigned int x)
01620 {
01621     int s = 2;
01622     while (x > 0xfff) {
01623         s++;
01624         x >>= 2;
01625     }
01626 
01627     return ff_sqrt(x << 20) << s;
01628 }
01629 
01630 unsigned int ff_rms(const int *data)
01631 {
01632     int i;
01633     unsigned int res = 0x10000;
01634     int b = LPC_ORDER;
01635 
01636     for (i = 0; i < LPC_ORDER; i++) {
01637         res = (((0x1000000 - data[i]*data[i]) >> 12) * res) >> 12;
01638 
01639         if (res == 0)
01640             return 0;
01641 
01642         while (res <= 0x3fff) {
01643             b++;
01644             res <<= 2;
01645         }
01646     }
01647 
01648     return ff_t_sqrt(res) >> b;
01649 }
01650 
01651 int ff_interp(RA144Context *ractx, int16_t *out, int a, int copyold, int energy)
01652 {
01653     int work[LPC_ORDER];
01654     int b = NBLOCKS - a;
01655     int i;
01656 
01657     // Interpolate block coefficients from the this frame's forth block and
01658     // last frame's forth block.
01659     for (i = 0; i < LPC_ORDER; i++)
01660         out[i] = (a * ractx->lpc_coef[0][i] + b * ractx->lpc_coef[1][i])>> 2;
01661 
01662     if (ff_eval_refl(work, out, ractx->avctx)) {
01663         // The interpolated coefficients are unstable, copy either new or old
01664         // coefficients.
01665         ff_int_to_int16(out, ractx->lpc_coef[copyold]);
01666         return ff_rescale_rms(ractx->lpc_refl_rms[copyold], energy);
01667     } else {
01668         return ff_rescale_rms(ff_rms(work), energy);
01669     }
01670 }
01671 
01672 unsigned int ff_rescale_rms(unsigned int rms, unsigned int energy)
01673 {
01674     return (rms * energy) >> 10;
01675 }
01676 
01678 int ff_irms(const int16_t *data)
01679 {
01680     unsigned int i, sum = 0;
01681 
01682     for (i=0; i < BLOCKSIZE; i++)
01683         sum += data[i] * data[i];
01684 
01685     if (sum == 0)
01686         return 0; /* OOPS - division by zero */
01687 
01688     return 0x20000000 / (ff_t_sqrt(sum) >> 8);
01689 }
01690 
01691 void ff_subblock_synthesis(RA144Context *ractx, const uint16_t *lpc_coefs,
01692                            int cba_idx, int cb1_idx, int cb2_idx,
01693                            int gval, int gain)
01694 {
01695     uint16_t buffer_a[BLOCKSIZE];
01696     uint16_t *block;
01697     int m[3];
01698 
01699     if (cba_idx) {
01700         cba_idx += BLOCKSIZE/2 - 1;
01701         ff_copy_and_dup(buffer_a, ractx->adapt_cb, cba_idx);
01702         m[0] = (ff_irms(buffer_a) * gval) >> 12;
01703     } else {
01704         m[0] = 0;
01705     }
01706     m[1] = (ff_cb1_base[cb1_idx] * gval) >> 8;
01707     m[2] = (ff_cb2_base[cb2_idx] * gval) >> 8;
01708     memmove(ractx->adapt_cb, ractx->adapt_cb + BLOCKSIZE,
01709             (BUFFERSIZE - BLOCKSIZE) * sizeof(*ractx->adapt_cb));
01710 
01711     block = ractx->adapt_cb + BUFFERSIZE - BLOCKSIZE;
01712 
01713     ff_add_wav(block, gain, cba_idx, m, cba_idx? buffer_a: NULL,
01714                ff_cb1_vects[cb1_idx], ff_cb2_vects[cb2_idx]);
01715 
01716     memcpy(ractx->curr_sblock, ractx->curr_sblock + BLOCKSIZE,
01717            LPC_ORDER*sizeof(*ractx->curr_sblock));
01718 
01719     if (ff_celp_lp_synthesis_filter(ractx->curr_sblock + LPC_ORDER, lpc_coefs,
01720                                     block, BLOCKSIZE, LPC_ORDER, 1, 0, 0xfff))
01721         memset(ractx->curr_sblock, 0, (LPC_ORDER+BLOCKSIZE)*sizeof(*ractx->curr_sblock));
01722 }