TheArchive/session-android
1
0
Fork 0
mirror of https://github.com/oxen-io/session-android.git synced 2024-12-23 16:37:30 +00:00
Code Issues Packages Projects Releases Wiki Activity
session-android/jni/webrtc/modules/audio_coding/codecs/ilbc/constants.c
Moxie Marlinspike d83a3d71bc Support for Signal calls. 
Merge in RedPhone

// FREEBIE
2015-09-30 14:30:09 -07:00

667 lines
25 KiB
C
Raw Blame History

/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/******************************************************************
iLBC Speech Coder ANSI-C Source Code
constants.c
******************************************************************/
#include "defines.h"
#include "constants.h"
/* HP Filters {b[0] b[1] b[2] -a[1] -a[2]} */
const int16_t WebRtcIlbcfix_kHpInCoefs[5] = {3798, -7596, 3798, 7807, -3733};
const int16_t WebRtcIlbcfix_kHpOutCoefs[5] = {3849, -7699, 3849, 7918, -3833};
/* Window in Q11 to window the energies of the 5 choises (3 for 20ms) in the choise for
the 80 sample start state
*/
const int16_t WebRtcIlbcfix_kStartSequenceEnrgWin[NSUB_MAX-1]= {
1638, 1843, 2048, 1843, 1638
};
/* LP Filter coeffs used for downsampling */
const int16_t WebRtcIlbcfix_kLpFiltCoefs[FILTERORDER_DS_PLUS1]= {
-273, 512, 1297, 1696, 1297, 512, -273
};
/* Constants used in the LPC calculations */
/* Hanning LPC window (in Q15) */
const int16_t WebRtcIlbcfix_kLpcWin[BLOCKL_MAX] = {
6, 22, 50, 89, 139, 200, 272, 355, 449, 554, 669, 795,
932, 1079, 1237, 1405, 1583, 1771, 1969, 2177, 2395, 2622, 2858, 3104,
3359, 3622, 3894, 4175, 4464, 4761, 5066, 5379, 5699, 6026, 6361, 6702,
7050, 7404, 7764, 8130, 8502, 8879, 9262, 9649, 10040, 10436, 10836, 11240,
11647, 12058, 12471, 12887, 13306, 13726, 14148, 14572, 14997, 15423, 15850, 16277,
16704, 17131, 17558, 17983, 18408, 18831, 19252, 19672, 20089, 20504, 20916, 21325,
21730, 22132, 22530, 22924, 23314, 23698, 24078, 24452, 24821, 25185, 25542, 25893,
26238, 26575, 26906, 27230, 27547, 27855, 28156, 28450, 28734, 29011, 29279, 29538,
29788, 30029, 30261, 30483, 30696, 30899, 31092, 31275, 31448, 31611, 31764, 31906,
32037, 32158, 32268, 32367, 32456, 32533, 32600, 32655, 32700, 32733, 32755, 32767,
32767, 32755, 32733, 32700, 32655, 32600, 32533, 32456, 32367, 32268, 32158, 32037,
31906, 31764, 31611, 31448, 31275, 31092, 30899, 30696, 30483, 30261, 30029, 29788,
29538, 29279, 29011, 28734, 28450, 28156, 27855, 27547, 27230, 26906, 26575, 26238,
25893, 25542, 25185, 24821, 24452, 24078, 23698, 23314, 22924, 22530, 22132, 21730,
21325, 20916, 20504, 20089, 19672, 19252, 18831, 18408, 17983, 17558, 17131, 16704,
16277, 15850, 15423, 14997, 14572, 14148, 13726, 13306, 12887, 12471, 12058, 11647,
11240, 10836, 10436, 10040, 9649, 9262, 8879, 8502, 8130, 7764, 7404, 7050,
6702, 6361, 6026, 5699, 5379, 5066, 4761, 4464, 4175, 3894, 3622, 3359,
3104, 2858, 2622, 2395, 2177, 1969, 1771, 1583, 1405, 1237, 1079, 932,
795, 669, 554, 449, 355, 272, 200, 139, 89, 50, 22, 6
};
/* Asymmetric LPC window (in Q15)*/
const int16_t WebRtcIlbcfix_kLpcAsymWin[BLOCKL_MAX] = {
2, 7, 15, 27, 42, 60, 81, 106, 135, 166, 201, 239,
280, 325, 373, 424, 478, 536, 597, 661, 728, 798, 872, 949,
1028, 1111, 1197, 1287, 1379, 1474, 1572, 1674, 1778, 1885, 1995, 2108,
2224, 2343, 2465, 2589, 2717, 2847, 2980, 3115, 3254, 3395, 3538, 3684,
3833, 3984, 4138, 4295, 4453, 4615, 4778, 4944, 5112, 5283, 5456, 5631,
5808, 5987, 6169, 6352, 6538, 6725, 6915, 7106, 7300, 7495, 7692, 7891,
8091, 8293, 8497, 8702, 8909, 9118, 9328, 9539, 9752, 9966, 10182, 10398,
10616, 10835, 11055, 11277, 11499, 11722, 11947, 12172, 12398, 12625, 12852, 13080,
13309, 13539, 13769, 14000, 14231, 14463, 14695, 14927, 15160, 15393, 15626, 15859,
16092, 16326, 16559, 16792, 17026, 17259, 17492, 17725, 17957, 18189, 18421, 18653,
18884, 19114, 19344, 19573, 19802, 20030, 20257, 20483, 20709, 20934, 21157, 21380,
21602, 21823, 22042, 22261, 22478, 22694, 22909, 23123, 23335, 23545, 23755, 23962,
24168, 24373, 24576, 24777, 24977, 25175, 25371, 25565, 25758, 25948, 26137, 26323,
26508, 26690, 26871, 27049, 27225, 27399, 27571, 27740, 27907, 28072, 28234, 28394,
28552, 28707, 28860, 29010, 29157, 29302, 29444, 29584, 29721, 29855, 29987, 30115,
30241, 30364, 30485, 30602, 30717, 30828, 30937, 31043, 31145, 31245, 31342, 31436,
31526, 31614, 31699, 31780, 31858, 31933, 32005, 32074, 32140, 32202, 32261, 32317,
32370, 32420, 32466, 32509, 32549, 32585, 32618, 32648, 32675, 32698, 32718, 32734,
32748, 32758, 32764, 32767, 32767, 32667, 32365, 31863, 31164, 30274, 29197, 27939,
26510, 24917, 23170, 21281, 19261, 17121, 14876, 12540, 10126, 7650, 5126, 2571
};
/* Lag window for LPC (Q31) */
const int32_t WebRtcIlbcfix_kLpcLagWin[LPC_FILTERORDER + 1]={
2147483647, 2144885453, 2137754373, 2125918626, 2109459810,
2088483140, 2063130336, 2033564590, 1999977009, 1962580174,
1921610283};
/* WebRtcIlbcfix_kLpcChirpSyntDenum vector in Q15 corresponding
* floating point vector {1 0.9025 0.9025^2 0.9025^3 ...}
*/
const int16_t WebRtcIlbcfix_kLpcChirpSyntDenum[LPC_FILTERORDER + 1] = {
32767, 29573, 26690, 24087,
21739, 19619, 17707, 15980,
14422, 13016, 11747};
/* WebRtcIlbcfix_kLpcChirpWeightDenum in Q15 corresponding to
* floating point vector {1 0.4222 0.4222^2... }
*/
const int16_t WebRtcIlbcfix_kLpcChirpWeightDenum[LPC_FILTERORDER + 1] = {
32767, 13835, 5841, 2466, 1041, 440,
186, 78, 33, 14, 6};
/* LSF quantization Q13 domain */
const int16_t WebRtcIlbcfix_kLsfCb[64 * 3 + 128 * 3 + 128 * 4] = {
1273, 2238, 3696,
3199, 5309, 8209,
3606, 5671, 7829,
2815, 5262, 8778,
2608, 4027, 5493,
1582, 3076, 5945,
2983, 4181, 5396,
2437, 4322, 6902,
1861, 2998, 4613,
2007, 3250, 5214,
1388, 2459, 4262,
2563, 3805, 5269,
2036, 3522, 5129,
1935, 4025, 6694,
2744, 5121, 7338,
2810, 4248, 5723,
3054, 5405, 7745,
1449, 2593, 4763,
3411, 5128, 6596,
2484, 4659, 7496,
1668, 2879, 4818,
1812, 3072, 5036,
1638, 2649, 3900,
2464, 3550, 4644,
1853, 2900, 4158,
2458, 4163, 5830,
2556, 4036, 6254,
2703, 4432, 6519,
3062, 4953, 7609,
1725, 3703, 6187,
2221, 3877, 5427,
2339, 3579, 5197,
2021, 4633, 7037,
2216, 3328, 4535,
2961, 4739, 6667,
2807, 3955, 5099,
2788, 4501, 6088,
1642, 2755, 4431,
3341, 5282, 7333,
2414, 3726, 5727,
1582, 2822, 5269,
2259, 3447, 4905,
3117, 4986, 7054,
1825, 3491, 5542,
3338, 5736, 8627,
1789, 3090, 5488,
2566, 3720, 4923,
2846, 4682, 7161,
1950, 3321, 5976,
1834, 3383, 6734,
3238, 4769, 6094,
2031, 3978, 5903,
1877, 4068, 7436,
2131, 4644, 8296,
2764, 5010, 8013,
2194, 3667, 6302,
2053, 3127, 4342,
3523, 6595, 10010,
3134, 4457, 5748,
3142, 5819, 9414,
2223, 4334, 6353,
2022, 3224, 4822,
2186, 3458, 5544,
2552, 4757, 6870,
10905, 12917, 14578,
9503, 11485, 14485,
9518, 12494, 14052,
6222, 7487, 9174,
7759, 9186, 10506,
8315, 12755, 14786,
9609, 11486, 13866,
8909, 12077, 13643,
7369, 9054, 11520,
9408, 12163, 14715,
6436, 9911, 12843,
7109, 9556, 11884,
7557, 10075, 11640,
6482, 9202, 11547,
6463, 7914, 10980,
8611, 10427, 12752,
7101, 9676, 12606,
7428, 11252, 13172,
10197, 12955, 15842,
7487, 10955, 12613,
5575, 7858, 13621,
7268, 11719, 14752,
7476, 11744, 13795,
7049, 8686, 11922,
8234, 11314, 13983,
6560, 11173, 14984,
6405, 9211, 12337,
8222, 12054, 13801,
8039, 10728, 13255,
10066, 12733, 14389,
6016, 7338, 10040,
6896, 8648, 10234,
7538, 9170, 12175,
7327, 12608, 14983,
10516, 12643, 15223,
5538, 7644, 12213,
6728, 12221, 14253,
7563, 9377, 12948,
8661, 11023, 13401,
7280, 8806, 11085,
7723, 9793, 12333,
12225, 14648, 16709,
8768, 13389, 15245,
10267, 12197, 13812,
5301, 7078, 11484,
7100, 10280, 11906,
8716, 12555, 14183,
9567, 12464, 15434,
7832, 12305, 14300,
7608, 10556, 12121,
8913, 11311, 12868,
7414, 9722, 11239,
8666, 11641, 13250,
9079, 10752, 12300,
8024, 11608, 13306,
10453, 13607, 16449,
8135, 9573, 10909,
6375, 7741, 10125,
10025, 12217, 14874,
6985, 11063, 14109,
9296, 13051, 14642,
8613, 10975, 12542,
6583, 10414, 13534,
6191, 9368, 13430,
5742, 6859, 9260,
7723, 9813, 13679,
8137, 11291, 12833,
6562, 8973, 10641,
6062, 8462, 11335,
6928, 8784, 12647,
7501, 8784, 10031,
8372, 10045, 12135,
8191, 9864, 12746,
5917, 7487, 10979,
5516, 6848, 10318,
6819, 9899, 11421,
7882, 12912, 15670,
9558, 11230, 12753,
7752, 9327, 11472,
8479, 9980, 11358,
11418, 14072, 16386,
7968, 10330, 14423,
8423, 10555, 12162,
6337, 10306, 14391,
8850, 10879, 14276,
6750, 11885, 15710,
7037, 8328, 9764,
6914, 9266, 13476,
9746, 13949, 15519,
11032, 14444, 16925,
8032, 10271, 11810,
10962, 13451, 15833,
10021, 11667, 13324,
6273, 8226, 12936,
8543, 10397, 13496,
7936, 10302, 12745,
6769, 8138, 10446,
6081, 7786, 11719,
8637, 11795, 14975,
8790, 10336, 11812,
7040, 8490, 10771,
7338, 10381, 13153,
6598, 7888, 9358,
6518, 8237, 12030,
9055, 10763, 12983,
6490, 10009, 12007,
9589, 12023, 13632,
6867, 9447, 10995,
7930, 9816, 11397,
10241, 13300, 14939,
5830, 8670, 12387,
9870, 11915, 14247,
9318, 11647, 13272,
6721, 10836, 12929,
6543, 8233, 9944,
8034, 10854, 12394,
9112, 11787, 14218,
9302, 11114, 13400,
9022, 11366, 13816,
6962, 10461, 12480,
11288, 13333, 15222,
7249, 8974, 10547,
10566, 12336, 14390,
6697, 11339, 13521,
11851, 13944, 15826,
6847, 8381, 11349,
7509, 9331, 10939,
8029, 9618, 11909,
13973, 17644, 19647, 22474,
14722, 16522, 20035, 22134,
16305, 18179, 21106, 23048,
15150, 17948, 21394, 23225,
13582, 15191, 17687, 22333,
11778, 15546, 18458, 21753,
16619, 18410, 20827, 23559,
14229, 15746, 17907, 22474,
12465, 15327, 20700, 22831,
15085, 16799, 20182, 23410,
13026, 16935, 19890, 22892,
14310, 16854, 19007, 22944,
14210, 15897, 18891, 23154,
14633, 18059, 20132, 22899,
15246, 17781, 19780, 22640,
16396, 18904, 20912, 23035,
14618, 17401, 19510, 21672,
15473, 17497, 19813, 23439,
18851, 20736, 22323, 23864,
15055, 16804, 18530, 20916,
16490, 18196, 19990, 21939,
11711, 15223, 21154, 23312,
13294, 15546, 19393, 21472,
12956, 16060, 20610, 22417,
11628, 15843, 19617, 22501,
14106, 16872, 19839, 22689,
15655, 18192, 20161, 22452,
12953, 15244, 20619, 23549,
15322, 17193, 19926, 21762,
16873, 18676, 20444, 22359,
14874, 17871, 20083, 21959,
11534, 14486, 19194, 21857,
17766, 19617, 21338, 23178,
13404, 15284, 19080, 23136,
15392, 17527, 19470, 21953,
14462, 16153, 17985, 21192,
17734, 19750, 21903, 23783,
16973, 19096, 21675, 23815,
16597, 18936, 21257, 23461,
15966, 17865, 20602, 22920,
15416, 17456, 20301, 22972,
18335, 20093, 21732, 23497,
15548, 17217, 20679, 23594,
15208, 16995, 20816, 22870,
13890, 18015, 20531, 22468,
13211, 15377, 19951, 22388,
12852, 14635, 17978, 22680,
16002, 17732, 20373, 23544,
11373, 14134, 19534, 22707,
17329, 19151, 21241, 23462,
15612, 17296, 19362, 22850,
15422, 19104, 21285, 23164,
13792, 17111, 19349, 21370,
15352, 17876, 20776, 22667,
15253, 16961, 18921, 22123,
14108, 17264, 20294, 23246,
15785, 17897, 20010, 21822,
17399, 19147, 20915, 22753,
13010, 15659, 18127, 20840,
16826, 19422, 22218, 24084,
18108, 20641, 22695, 24237,
18018, 20273, 22268, 23920,
16057, 17821, 21365, 23665,
16005, 17901, 19892, 23016,
13232, 16683, 21107, 23221,
13280, 16615, 19915, 21829,
14950, 18575, 20599, 22511,
16337, 18261, 20277, 23216,
14306, 16477, 21203, 23158,
12803, 17498, 20248, 22014,
14327, 17068, 20160, 22006,
14402, 17461, 21599, 23688,
16968, 18834, 20896, 23055,
15070, 17157, 20451, 22315,
15419, 17107, 21601, 23946,
16039, 17639, 19533, 21424,
16326, 19261, 21745, 23673,
16489, 18534, 21658, 23782,
16594, 18471, 20549, 22807,
18973, 21212, 22890, 24278,
14264, 18674, 21123, 23071,
15117, 16841, 19239, 23118,
13762, 15782, 20478, 23230,
14111, 15949, 20058, 22354,
14990, 16738, 21139, 23492,
13735, 16971, 19026, 22158,
14676, 17314, 20232, 22807,
16196, 18146, 20459, 22339,
14747, 17258, 19315, 22437,
14973, 17778, 20692, 23367,
15715, 17472, 20385, 22349,
15702, 18228, 20829, 23410,
14428, 16188, 20541, 23630,
16824, 19394, 21365, 23246,
13069, 16392, 18900, 21121,
12047, 16640, 19463, 21689,
14757, 17433, 19659, 23125,
15185, 16930, 19900, 22540,
16026, 17725, 19618, 22399,
16086, 18643, 21179, 23472,
15462, 17248, 19102, 21196,
17368, 20016, 22396, 24096,
12340, 14475, 19665, 23362,
13636, 16229, 19462, 22728,
14096, 16211, 19591, 21635,
12152, 14867, 19943, 22301,
14492, 17503, 21002, 22728,
14834, 16788, 19447, 21411,
14650, 16433, 19326, 22308,
14624, 16328, 19659, 23204,
13888, 16572, 20665, 22488,
12977, 16102, 18841, 22246,
15523, 18431, 21757, 23738,
14095, 16349, 18837, 20947,
13266, 17809, 21088, 22839,
15427, 18190, 20270, 23143,
11859, 16753, 20935, 22486,
12310, 17667, 21736, 23319,
14021, 15926, 18702, 22002,
12286, 15299, 19178, 21126,
15703, 17491, 21039, 23151,
12272, 14018, 18213, 22570,
14817, 16364, 18485, 22598,
17109, 19683, 21851, 23677,
12657, 14903, 19039, 22061,
14713, 16487, 20527, 22814,
14635, 16726, 18763, 21715,
15878, 18550, 20718, 22906
};
const int16_t WebRtcIlbcfix_kLsfDimCb[LSF_NSPLIT] = {3, 3, 4};
const int16_t WebRtcIlbcfix_kLsfSizeCb[LSF_NSPLIT] = {64,128,128};
const int16_t WebRtcIlbcfix_kLsfMean[LPC_FILTERORDER] = {
2308, 3652, 5434, 7885,
10255, 12559, 15160, 17513,
20328, 22752};
const int16_t WebRtcIlbcfix_kLspMean[LPC_FILTERORDER] = {
31476, 29565, 25819, 18725, 10276,
1236, -9049, -17600, -25884, -30618
};
/* Q14 */
const int16_t WebRtcIlbcfix_kLsfWeight20ms[4] = {12288, 8192, 4096, 0};
const int16_t WebRtcIlbcfix_kLsfWeight30ms[6] = {8192, 16384, 10923, 5461, 0, 0};
/*
cos(x) in Q15
WebRtcIlbcfix_kCos[i] = cos(pi*i/64.0)
used in WebRtcIlbcfix_Lsp2Lsf()
*/
const int16_t WebRtcIlbcfix_kCos[64] = {
32767, 32729, 32610, 32413, 32138, 31786, 31357, 30853,
30274, 29622, 28899, 28106, 27246, 26320, 25330, 24279,
23170, 22006, 20788, 19520, 18205, 16846, 15447, 14010,
12540, 11039, 9512, 7962, 6393, 4808, 3212, 1608,
0, -1608, -3212, -4808, -6393, -7962, -9512, -11039,
-12540, -14010, -15447, -16846, -18205, -19520, -20788, -22006,
-23170, -24279, -25330, -26320, -27246, -28106, -28899, -29622,
-30274, -30853, -31357, -31786, -32138, -32413, -32610, -32729
};
/*
Derivative in Q19, used to interpolate between the
WebRtcIlbcfix_kCos[] values to get a more exact y = cos(x)
*/
const int16_t WebRtcIlbcfix_kCosDerivative[64] = {
-632, -1893, -3150, -4399, -5638, -6863, -8072, -9261,
-10428, -11570, -12684, -13767, -14817, -15832, -16808, -17744,
-18637, -19486, -20287, -21039, -21741, -22390, -22986, -23526,
-24009, -24435, -24801, -25108, -25354, -25540, -25664, -25726,
-25726, -25664, -25540, -25354, -25108, -24801, -24435, -24009,
-23526, -22986, -22390, -21741, -21039, -20287, -19486, -18637,
-17744, -16808, -15832, -14817, -13767, -12684, -11570, -10428,
-9261, -8072, -6863, -5638, -4399, -3150, -1893, -632};
/*
Table in Q15, used for a2lsf conversion
WebRtcIlbcfix_kCosGrid[i] = cos((2*pi*i)/(float)(2*COS_GRID_POINTS));
*/
const int16_t WebRtcIlbcfix_kCosGrid[COS_GRID_POINTS + 1] = {
32760, 32723, 32588, 32364, 32051, 31651, 31164, 30591,
29935, 29196, 28377, 27481, 26509, 25465, 24351, 23170,
21926, 20621, 19260, 17846, 16384, 14876, 13327, 11743,
10125, 8480, 6812, 5126, 3425, 1714, 0, -1714, -3425,
-5126, -6812, -8480, -10125, -11743, -13327, -14876,
-16384, -17846, -19260, -20621, -21926, -23170, -24351,
-25465, -26509, -27481, -28377, -29196, -29935, -30591,
-31164, -31651, -32051, -32364, -32588, -32723, -32760
};
/*
Derivative of y = acos(x) in Q12
used in WebRtcIlbcfix_Lsp2Lsf()
*/
const int16_t WebRtcIlbcfix_kAcosDerivative[64] = {
-26887, -8812, -5323, -3813, -2979, -2444, -2081, -1811,
-1608, -1450, -1322, -1219, -1132, -1059, -998, -946,
-901, -861, -827, -797, -772, -750, -730, -713,
-699, -687, -677, -668, -662, -657, -654, -652,
-652, -654, -657, -662, -668, -677, -687, -699,
-713, -730, -750, -772, -797, -827, -861, -901,
-946, -998, -1059, -1132, -1219, -1322, -1450, -1608,
-1811, -2081, -2444, -2979, -3813, -5323, -8812, -26887
};
/* Tables for quantization of start state */
/* State quantization tables */
const int16_t WebRtcIlbcfix_kStateSq3[8] = { /* Values in Q13 */
-30473, -17838, -9257, -2537,
3639, 10893, 19958, 32636
};
/* This table defines the limits for the selection of the freqg
less or equal than value 0 => index = 0
less or equal than value k => index = k
*/
const int32_t WebRtcIlbcfix_kChooseFrgQuant[64] = {
118, 163, 222, 305, 425, 604,
851, 1174, 1617, 2222, 3080, 4191,
5525, 7215, 9193, 11540, 14397, 17604,
21204, 25209, 29863, 35720, 42531, 50375,
59162, 68845, 80108, 93754, 110326, 129488,
150654, 174328, 201962, 233195, 267843, 308239,
354503, 405988, 464251, 531550, 608652, 697516,
802526, 928793, 1080145, 1258120, 1481106, 1760881,
2111111, 2546619, 3078825, 3748642, 4563142, 5573115,
6887601, 8582108, 10797296, 14014513, 18625760, 25529599,
37302935, 58819185, 109782723, WEBRTC_SPL_WORD32_MAX
};
const int16_t WebRtcIlbcfix_kScale[64] = {
/* Values in Q16 */
29485, 25003, 21345, 18316, 15578, 13128, 10973, 9310, 7955,
6762, 5789, 4877, 4255, 3699, 3258, 2904, 2595, 2328,
2123, 1932, 1785, 1631, 1493, 1370, 1260, 1167, 1083,
/* Values in Q21 */
32081, 29611, 27262, 25229, 23432, 21803, 20226, 18883, 17609,
16408, 15311, 14327, 13390, 12513, 11693, 10919, 10163, 9435,
8739, 8100, 7424, 6813, 6192, 5648, 5122, 4639, 4207, 3798,
3404, 3048, 2706, 2348, 2036, 1713, 1393, 1087, 747
};
/*frgq in fixpoint, but already computed like this:
for(i=0; i<64; i++){
a = (pow(10,frgq[i])/4.5);
WebRtcIlbcfix_kFrgQuantMod[i] = round(a);
}
Value 0 :36 in Q8
37:58 in Q5
59:63 in Q3
*/
const int16_t WebRtcIlbcfix_kFrgQuantMod[64] = {
/* First 37 values in Q8 */
569, 671, 786, 916, 1077, 1278,
1529, 1802, 2109, 2481, 2898, 3440,
3943, 4535, 5149, 5778, 6464, 7208,
7904, 8682, 9397, 10285, 11240, 12246,
13313, 14382, 15492, 16735, 18131, 19693,
21280, 22912, 24624, 26544, 28432, 30488,
32720,
/* 22 values in Q5 */
4383, 4684, 5012, 5363, 5739, 6146,
6603, 7113, 7679, 8285, 9040, 9850,
10838, 11882, 13103, 14467, 15950, 17669,
19712, 22016, 24800, 28576,
/* 5 values in Q3 */
8240, 9792, 12040, 15440, 22472
};
/* Constants for codebook search and creation */
/* Expansion filter to get additional cb section.
* Q12 and reversed compared to flp
*/
const int16_t WebRtcIlbcfix_kCbFiltersRev[CB_FILTERLEN]={
-140, 446, -755, 3302, 2922, -590, 343, -138};
/* Weighting coefficients for short lags.
* [0.2 0.4 0.6 0.8] in Q15 */
const int16_t WebRtcIlbcfix_kAlpha[4]={
6554, 13107, 19661, 26214};
/* Ranges for search and filters at different subframes */
const int16_t WebRtcIlbcfix_kSearchRange[5][CB_NSTAGES]={
{58,58,58}, {108,44,44}, {108,108,108}, {108,108,108}, {108,108,108}};
const int16_t WebRtcIlbcfix_kFilterRange[5]={63, 85, 125, 147, 147};
/* Gain Quantization for the codebook gains of the 3 stages */
/* Q14 (one extra value (max int16_t) to simplify for the search) */
const int16_t WebRtcIlbcfix_kGainSq3[9]={
-16384, -10813, -5407, 0, 4096, 8192,
12288, 16384, 32767};
/* Q14 (one extra value (max int16_t) to simplify for the search) */
const int16_t WebRtcIlbcfix_kGainSq4[17]={
-17203, -14746, -12288, -9830, -7373, -4915,
-2458, 0, 2458, 4915, 7373, 9830,
12288, 14746, 17203, 19661, 32767};
/* Q14 (one extra value (max int16_t) to simplify for the search) */
const int16_t WebRtcIlbcfix_kGainSq5[33]={
614, 1229, 1843, 2458, 3072, 3686,
4301, 4915, 5530, 6144, 6758, 7373,
7987, 8602, 9216, 9830, 10445, 11059,
11674, 12288, 12902, 13517, 14131, 14746,
15360, 15974, 16589, 17203, 17818, 18432,
19046, 19661, 32767};
/* Q14 gain_sq5Tbl squared in Q14 */
const int16_t WebRtcIlbcfix_kGainSq5Sq[32] = {
23, 92, 207, 368, 576, 829,
1129, 1474, 1866, 2304, 2787, 3317,
3893, 4516, 5184, 5897, 6658, 7464,
8318, 9216, 10160, 11151, 12187, 13271,
14400, 15574, 16796, 18062, 19377, 20736,
22140, 23593
};
const int16_t* const WebRtcIlbcfix_kGain[3] =
{WebRtcIlbcfix_kGainSq5, WebRtcIlbcfix_kGainSq4, WebRtcIlbcfix_kGainSq3};
/* Tables for the Enhancer, using upsamling factor 4 (ENH_UPS0 = 4) */
const int16_t WebRtcIlbcfix_kEnhPolyPhaser[ENH_UPS0][ENH_FLO_MULT2_PLUS1]={
{0, 0, 0, 4096, 0, 0, 0},
{64, -315, 1181, 3531, -436, 77, -64},
{97, -509, 2464, 2464, -509, 97, -97},
{77, -436, 3531, 1181, -315, 64, -77}
};
const int16_t WebRtcIlbcfix_kEnhWt[3] = {
4800, 16384, 27968 /* Q16 */
};
const int16_t WebRtcIlbcfix_kEnhPlocs[ENH_NBLOCKS_TOT] = {
160, 480, 800, 1120, 1440, 1760, 2080, 2400 /* Q(-2) */
};
/* PLC table */
const int16_t WebRtcIlbcfix_kPlcPerSqr[6] = { /* Grid points for square of periodiciy in Q15 */
839, 1343, 2048, 2998, 4247, 5849
};
const int16_t WebRtcIlbcfix_kPlcPitchFact[6] = { /* Value of y=(x^4-0.4)/(0.7-0.4) in grid points in Q15 */
0, 5462, 10922, 16384, 21846, 27306
};
const int16_t WebRtcIlbcfix_kPlcPfSlope[6] = { /* Slope of y=(x^4-0.4)/(0.7-0.4) in Q11 */
26667, 18729, 13653, 10258, 7901, 6214
};
Reference in New Issue View Git Blame Copy Permalink