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      1 /*
      2  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 /*
     12  * pitch_gain_tables.c
     13  *
     14  * This file contains tables for the pitch filter side-info in the entropy coder.
     15  *
     16  */
     17 
     18 #include "pitch_gain_tables.h"
     19 
     20 
     21 /********************* Pitch Filter Gain Coefficient Tables ************************/
     22 
     23 /* cdf for quantized pitch filter gains */
     24 const uint16_t WebRtcIsacfix_kPitchGainCdf[255] = {
     25   0,  2,  4,  6,  64,  901,  903,  905,  16954,  16956,
     26   16961,  17360,  17362,  17364,  17366,  17368,  17370,  17372,  17374,  17411,
     27   17514,  17516,  17583,  18790,  18796,  18802,  20760,  20777,  20782,  21722,
     28   21724,  21728,  21738,  21740,  21742,  21744,  21746,  21748,  22224,  22227,
     29   22230,  23214,  23229,  23239,  25086,  25108,  25120,  26088,  26094,  26098,
     30   26175,  26177,  26179,  26181,  26183,  26185,  26484,  26507,  26522,  27705,
     31   27731,  27750,  29767,  29799,  29817,  30866,  30883,  30885,  31025,  31029,
     32   31031,  31033,  31035,  31037,  31114,  31126,  31134,  32687,  32722,  32767,
     33   35718,  35742,  35757,  36943,  36952,  36954,  37115,  37128,  37130,  37132,
     34   37134,  37136,  37143,  37145,  37152,  38843,  38863,  38897,  47458,  47467,
     35   47474,  49040,  49061,  49063,  49145,  49157,  49159,  49161,  49163,  49165,
     36   49167,  49169,  49171,  49757,  49770,  49782,  61333,  61344,  61346,  62860,
     37   62883,  62885,  62887,  62889,  62891,  62893,  62895,  62897,  62899,  62901,
     38   62903,  62905,  62907,  62909,  65496,  65498,  65500,  65521,  65523,  65525,
     39   65527,  65529,  65531,  65533,  65535,  65535,  65535,  65535,  65535,  65535,
     40   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     41   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     42   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     43   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     44   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     45   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     46   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     47   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     48   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     49   65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,  65535,
     50   65535,  65535,  65535,  65535,  65535
     51 };
     52 
     53 /* index limits and ranges */
     54 const int16_t WebRtcIsacfix_kLowerlimiGain[3] = {
     55   -7, -2, -1
     56 };
     57 
     58 const int16_t WebRtcIsacfix_kUpperlimitGain[3] = {
     59   0,  3,  1
     60 };
     61 
     62 const uint16_t WebRtcIsacfix_kMultsGain[2] = {
     63   18,  3
     64 };
     65 
     66 /* size of cdf table */
     67 const uint16_t WebRtcIsacfix_kCdfTableSizeGain[1] = {
     68   256
     69 };
     70 
     71 /* mean values of pitch filter gains in FIXED point Q12 */
     72 const int16_t WebRtcIsacfix_kPitchGain1[144] = {
     73   843, 1092, 1336, 1222, 1405, 1656, 1500, 1815, 1843, 1838, 1839,
     74   1843, 1843, 1843, 1843, 1843,   1843, 1843, 814, 846, 1092, 1013,
     75   1174, 1383, 1391, 1511, 1584, 1734, 1753, 1843, 1843, 1843,   1843,
     76   1843, 1843, 1843, 524, 689, 777, 845, 947, 1069, 1090, 1263,
     77   1380, 1447, 1559, 1676,   1645, 1749, 1843, 1843, 1843, 1843, 81,
     78   477, 563, 611, 706, 806, 849, 1012, 1192, 1128,   1330, 1489,
     79   1425, 1576, 1826, 1741, 1843, 1843, 0,     290, 305, 356, 488,
     80   575, 602, 741,    890, 835, 1079, 1196, 1182, 1376, 1519, 1506,
     81   1680, 1843, 0,     47,  97,  69,  289, 381,    385, 474, 617,
     82   664, 803, 1079, 935, 1160, 1269, 1265, 1506, 1741, 0,      0,
     83   0,      0,      112, 120, 190, 283, 442, 343, 526, 809, 684,
     84   935, 1134, 1020, 1265, 1506, 0,      0,      0,      0,      0,      0,
     85   0,      111,    256, 87,  373, 597, 430, 684, 935, 770, 1020,
     86   1265
     87 };
     88 
     89 const int16_t WebRtcIsacfix_kPitchGain2[144] = {
     90   1760, 1525, 1285, 1747, 1671, 1393, 1843, 1826, 1555, 1843, 1784,
     91   1606, 1843, 1843, 1711, 1843,   1843, 1814, 1389, 1275, 1040, 1564,
     92   1414, 1252, 1610, 1495, 1343, 1753, 1592, 1405, 1804, 1720,   1475,
     93   1843, 1814, 1581, 1208, 1061, 856, 1349, 1148, 994, 1390, 1253,
     94   1111, 1495, 1343, 1178,   1770, 1465, 1234, 1814, 1581, 1342, 1040,
     95   793, 713, 1053, 895, 737, 1128, 1003, 861, 1277,   1094, 981,
     96   1475, 1192, 1019, 1581, 1342, 1098, 855, 570, 483, 833, 648,
     97   540, 948, 744,    572, 1009, 844, 636, 1234, 934, 685, 1342,
     98   1217, 984, 537, 318, 124, 603, 423, 350,    687, 479, 322,
     99   791, 581, 430, 987, 671, 488, 1098, 849, 597, 283, 27,
    100   0,     397,    222, 38,  513, 271, 124, 624, 325, 157, 737,
    101   484, 233, 849, 597, 343, 27,  0,      0,   141, 0,     0,
    102   256, 69,  0,     370, 87,  0,     484, 229, 0,     597, 343,
    103   87
    104 };
    105 
    106 const int16_t WebRtcIsacfix_kPitchGain3[144] = {
    107   1843, 1843, 1711, 1843, 1818, 1606, 1843, 1827, 1511, 1814, 1639,
    108   1393, 1760, 1525, 1285, 1656,   1419, 1176, 1835, 1718, 1475, 1841,
    109   1650, 1387, 1648, 1498, 1287, 1600, 1411, 1176, 1522, 1299,   1040,
    110   1419, 1176, 928, 1773, 1461, 1128, 1532, 1355, 1202, 1429, 1260,
    111   1115, 1398, 1151, 1025,   1172, 1080, 790, 1176, 928, 677, 1475,
    112   1147, 1019, 1276, 1096, 922, 1214, 1010, 901, 1057,   893, 800,
    113   1040, 796, 734, 928, 677, 424, 1137, 897, 753, 1120, 830,
    114   710, 875, 751,    601, 795, 642, 583, 790, 544, 475, 677,
    115   474, 140, 987, 750, 482, 697, 573, 450,    691, 487, 303,
    116   661, 394, 332, 537, 303, 220, 424, 168, 0,     737, 484,
    117   229, 624,    348, 153, 441, 261, 136, 397, 166, 51,  283,
    118   27,  0,     168, 0,     0,     484, 229,    0,   370, 57,  0,
    119   256, 43,  0,     141, 0,  0,   27,  0,   0,   0,   0,
    120   0
    121 };
    122 
    123 
    124 const int16_t WebRtcIsacfix_kPitchGain4[144] = {
    125   1843, 1843, 1843, 1843, 1841, 1843, 1500, 1821, 1843, 1222, 1434,
    126   1656, 843, 1092, 1336, 504,    757, 1007, 1843, 1843, 1843, 1838,
    127   1791, 1843, 1265, 1505, 1599, 965, 1219, 1425, 730, 821,    1092,
    128   249, 504, 757, 1783, 1819, 1843, 1351, 1567, 1727, 1096, 1268,
    129   1409, 805, 961, 1131,   444, 670, 843, 0,  249, 504, 1425,
    130   1655, 1743, 1096, 1324, 1448, 822, 1019, 1199, 490,    704, 867,
    131   81,  450, 555, 0,     0,  249, 1247, 1428, 1530, 881, 1073,
    132   1283, 610, 759,    939, 278, 464, 645, 0,     200, 270, 0,
    133   0,   0,  935, 1163, 1410, 528, 790, 1068,   377, 499, 717,
    134   173, 240, 274, 0,   43,  62,  0,   0,   0,   684, 935,
    135   1182, 343,    551, 735, 161, 262, 423, 0,      55,  27,  0,
    136   0,   0,   0,   0,   0,   430, 684,    935, 87,  377, 597,
    137   0,   46,  256, 0,   0,   0,   0,   0,   0,   0,   0,
    138   0
    139 };
    140 
    141 
    142 
    143 /* transform matrix in Q12*/
    144 const int16_t WebRtcIsacfix_kTransform[4][4] = {
    145   { -2048, -2048, -2048, -2048 },
    146   {  2748,   916,  -916, -2748 },
    147   {  2048, -2048, -2048,  2048 },
    148   {   916, -2748,  2748,  -916 }
    149 };
    150