| /* |
| * 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 size_t WebRtcIlbcfix_kSearchRange[5][CB_NSTAGES]={ |
| {58,58,58}, {108,44,44}, {108,108,108}, {108,108,108}, {108,108,108}}; |
| |
| const size_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 size_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 |
| }; |
