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Diffstat (limited to 'libavcodec/g729data.h')
| -rw-r--r-- | libavcodec/g729data.h | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/libavcodec/g729data.h b/libavcodec/g729data.h new file mode 100644 index 0000000000..365ca47ec6 --- /dev/null +++ b/libavcodec/g729data.h @@ -0,0 +1,382 @@ +/* + * data for G.729, G729 Annex D decoders + * Copyright (c) 2007 Vladimir Voroshilov + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_G729DATA_H +#define AVCODEC_G729DATA_H + +#include <stdint.h> + +#define MA_NP 4 ///< Moving Average (MA) prediction order + +#define VQ_1ST_BITS 7 ///< first stage vector of quantizer (size in bits) +#define VQ_2ND_BITS 5 ///< second stage vector of quantizer (size in bits) + +#define GC_1ST_IDX_BITS_8K 3 ///< gain codebook (first stage) index, 8k mode (size in bits) +#define GC_2ND_IDX_BITS_8K 4 ///< gain codebook (second stage) index, 8k mode (size in bits) + +#define GC_1ST_IDX_BITS_6K4 3 ///< gain codebook (first stage) index, 6.4k mode (size in bits) +#define GC_2ND_IDX_BITS_6K4 3 ///< gain codebook (second stage) index, 6.4k mode (size in bits) + +/** + * first stage LSP codebook + * (10-dimensional, with 128 entries (3.24 of G.729) + */ +static const int16_t cb_lsp_1st[1<<VQ_1ST_BITS][10] = { /* (2.13) */ + { 1486, 2168, 3751, 9074, 12134, 13944, 17983, 19173, 21190, 21820}, + { 1730, 2640, 3450, 4870, 6126, 7876, 15644, 17817, 20294, 21902}, + { 1568, 2256, 3088, 4874, 11063, 13393, 18307, 19293, 21109, 21741}, + { 1733, 2512, 3357, 4708, 6977, 10296, 17024, 17956, 19145, 20350}, + { 1744, 2436, 3308, 8731, 10432, 12007, 15614, 16639, 21359, 21913}, + { 1786, 2369, 3372, 4521, 6795, 12963, 17674, 18988, 20855, 21640}, + { 1631, 2433, 3361, 6328, 10709, 12013, 13277, 13904, 19441, 21088}, + { 1489, 2364, 3291, 6250, 9227, 10403, 13843, 15278, 17721, 21451}, + { 1869, 2533, 3475, 4365, 9152, 14513, 15908, 17022, 20611, 21411}, + { 2070, 3025, 4333, 5854, 7805, 9231, 10597, 16047, 20109, 21834}, + { 1910, 2673, 3419, 4261, 11168, 15111, 16577, 17591, 19310, 20265}, + { 1141, 1815, 2624, 4623, 6495, 9588, 13968, 16428, 19351, 21286}, + { 2192, 3171, 4707, 5808, 10904, 12500, 14162, 15664, 21124, 21789}, + { 1286, 1907, 2548, 3453, 9574, 11964, 15978, 17344, 19691, 22495}, + { 1921, 2720, 4604, 6684, 11503, 12992, 14350, 15262, 16997, 20791}, + { 2052, 2759, 3897, 5246, 6638, 10267, 15834, 16814, 18149, 21675}, + { 1798, 2497, 5617, 11449, 13189, 14711, 17050, 18195, 20307, 21182}, + { 1009, 1647, 2889, 5709, 9541, 12354, 15231, 18494, 20966, 22033}, + { 3016, 3794, 5406, 7469, 12488, 13984, 15328, 16334, 19952, 20791}, + { 2203, 3040, 3796, 5442, 11987, 13512, 14931, 16370, 17856, 18803}, + { 2912, 4292, 7988, 9572, 11562, 13244, 14556, 16529, 20004, 21073}, + { 2861, 3607, 5923, 7034, 9234, 12054, 13729, 18056, 20262, 20974}, + { 3069, 4311, 5967, 7367, 11482, 12699, 14309, 16233, 18333, 19172}, + { 2434, 3661, 4866, 5798, 10383, 11722, 13049, 15668, 18862, 19831}, + { 2020, 2605, 3860, 9241, 13275, 14644, 16010, 17099, 19268, 20251}, + { 1877, 2809, 3590, 4707, 11056, 12441, 15622, 17168, 18761, 19907}, + { 2107, 2873, 3673, 5799, 13579, 14687, 15938, 17077, 18890, 19831}, + { 1612, 2284, 2944, 3572, 8219, 13959, 15924, 17239, 18592, 20117}, + { 2420, 3156, 6542, 10215, 12061, 13534, 15305, 16452, 18717, 19880}, + { 1667, 2612, 3534, 5237, 10513, 11696, 12940, 16798, 18058, 19378}, + { 2388, 3017, 4839, 9333, 11413, 12730, 15024, 16248, 17449, 18677}, + { 1875, 2786, 4231, 6320, 8694, 10149, 11785, 17013, 18608, 19960}, + { 679, 1411, 4654, 8006, 11446, 13249, 15763, 18127, 20361, 21567}, + { 1838, 2596, 3578, 4608, 5650, 11274, 14355, 15886, 20579, 21754}, + { 1303, 1955, 2395, 3322, 12023, 13764, 15883, 18077, 20180, 21232}, + { 1438, 2102, 2663, 3462, 8328, 10362, 13763, 17248, 19732, 22344}, + { 860, 1904, 6098, 7775, 9815, 12007, 14821, 16709, 19787, 21132}, + { 1673, 2723, 3704, 6125, 7668, 9447, 13683, 14443, 20538, 21731}, + { 1246, 1849, 2902, 4508, 7221, 12710, 14835, 16314, 19335, 22720}, + { 1525, 2260, 3862, 5659, 7342, 11748, 13370, 14442, 18044, 21334}, + { 1196, 1846, 3104, 7063, 10972, 12905, 14814, 17037, 19922, 22636}, + { 2147, 3106, 4475, 6511, 8227, 9765, 10984, 12161, 18971, 21300}, + { 1585, 2405, 2994, 4036, 11481, 13177, 14519, 15431, 19967, 21275}, + { 1778, 2688, 3614, 4680, 9465, 11064, 12473, 16320, 19742, 20800}, + { 1862, 2586, 3492, 6719, 11708, 13012, 14364, 16128, 19610, 20425}, + { 1395, 2156, 2669, 3386, 10607, 12125, 13614, 16705, 18976, 21367}, + { 1444, 2117, 3286, 6233, 9423, 12981, 14998, 15853, 17188, 21857}, + { 2004, 2895, 3783, 4897, 6168, 7297, 12609, 16445, 19297, 21465}, + { 1495, 2863, 6360, 8100, 11399, 14271, 15902, 17711, 20479, 22061}, + { 2484, 3114, 5718, 7097, 8400, 12616, 14073, 14847, 20535, 21396}, + { 2424, 3277, 5296, 6284, 11290, 12903, 16022, 17508, 19333, 20283}, + { 2565, 3778, 5360, 6989, 8782, 10428, 14390, 15742, 17770, 21734}, + { 2727, 3384, 6613, 9254, 10542, 12236, 14651, 15687, 20074, 21102}, + { 1916, 2953, 6274, 8088, 9710, 10925, 12392, 16434, 20010, 21183}, + { 3384, 4366, 5349, 7667, 11180, 12605, 13921, 15324, 19901, 20754}, + { 3075, 4283, 5951, 7619, 9604, 11010, 12384, 14006, 20658, 21497}, + { 1751, 2455, 5147, 9966, 11621, 13176, 14739, 16470, 20788, 21756}, + { 1442, 2188, 3330, 6813, 8929, 12135, 14476, 15306, 19635, 20544}, + { 2294, 2895, 4070, 8035, 12233, 13416, 14762, 17367, 18952, 19688}, + { 1937, 2659, 4602, 6697, 9071, 12863, 14197, 15230, 16047, 18877}, + { 2071, 2663, 4216, 9445, 10887, 12292, 13949, 14909, 19236, 20341}, + { 1740, 2491, 3488, 8138, 9656, 11153, 13206, 14688, 20896, 21907}, + { 2199, 2881, 4675, 8527, 10051, 11408, 14435, 15463, 17190, 20597}, + { 1943, 2988, 4177, 6039, 7478, 8536, 14181, 15551, 17622, 21579}, + { 1825, 3175, 7062, 9818, 12824, 15450, 18330, 19856, 21830, 22412}, + { 2464, 3046, 4822, 5977, 7696, 15398, 16730, 17646, 20588, 21320}, + { 2550, 3393, 5305, 6920, 10235, 14083, 18143, 19195, 20681, 21336}, + { 3003, 3799, 5321, 6437, 7919, 11643, 15810, 16846, 18119, 18980}, + { 3455, 4157, 6838, 8199, 9877, 12314, 15905, 16826, 19949, 20892}, + { 3052, 3769, 4891, 5810, 6977, 10126, 14788, 15990, 19773, 20904}, + { 3671, 4356, 5827, 6997, 8460, 12084, 14154, 14939, 19247, 20423}, + { 2716, 3684, 5246, 6686, 8463, 10001, 12394, 14131, 16150, 19776}, + { 1945, 2638, 4130, 7995, 14338, 15576, 17057, 18206, 20225, 20997}, + { 2304, 2928, 4122, 4824, 5640, 13139, 15825, 16938, 20108, 21054}, + { 1800, 2516, 3350, 5219, 13406, 15948, 17618, 18540, 20531, 21252}, + { 1436, 2224, 2753, 4546, 9657, 11245, 15177, 16317, 17489, 19135}, + { 2319, 2899, 4980, 6936, 8404, 13489, 15554, 16281, 20270, 20911}, + { 2187, 2919, 4610, 5875, 7390, 12556, 14033, 16794, 20998, 21769}, + { 2235, 2923, 5121, 6259, 8099, 13589, 15340, 16340, 17927, 20159}, + { 1765, 2638, 3751, 5730, 7883, 10108, 13633, 15419, 16808, 18574}, + { 3460, 5741, 9596, 11742, 14413, 16080, 18173, 19090, 20845, 21601}, + { 3735, 4426, 6199, 7363, 9250, 14489, 16035, 17026, 19873, 20876}, + { 3521, 4778, 6887, 8680, 12717, 14322, 15950, 18050, 20166, 21145}, + { 2141, 2968, 6865, 8051, 10010, 13159, 14813, 15861, 17528, 18655}, + { 4148, 6128, 9028, 10871, 12686, 14005, 15976, 17208, 19587, 20595}, + { 4403, 5367, 6634, 8371, 10163, 11599, 14963, 16331, 17982, 18768}, + { 4091, 5386, 6852, 8770, 11563, 13290, 15728, 16930, 19056, 20102}, + { 2746, 3625, 5299, 7504, 10262, 11432, 13172, 15490, 16875, 17514}, + { 2248, 3556, 8539, 10590, 12665, 14696, 16515, 17824, 20268, 21247}, + { 1279, 1960, 3920, 7793, 10153, 14753, 16646, 18139, 20679, 21466}, + { 2440, 3475, 6737, 8654, 12190, 14588, 17119, 17925, 19110, 19979}, + { 1879, 2514, 4497, 7572, 10017, 14948, 16141, 16897, 18397, 19376}, + { 2804, 3688, 7490, 10086, 11218, 12711, 16307, 17470, 20077, 21126}, + { 2023, 2682, 3873, 8268, 10255, 11645, 15187, 17102, 18965, 19788}, + { 2823, 3605, 5815, 8595, 10085, 11469, 16568, 17462, 18754, 19876}, + { 2851, 3681, 5280, 7648, 9173, 10338, 14961, 16148, 17559, 18474}, + { 1348, 2645, 5826, 8785, 10620, 12831, 16255, 18319, 21133, 22586}, + { 2141, 3036, 4293, 6082, 7593, 10629, 17158, 18033, 21466, 22084}, + { 1608, 2375, 3384, 6878, 9970, 11227, 16928, 17650, 20185, 21120}, + { 2774, 3616, 5014, 6557, 7788, 8959, 17068, 18302, 19537, 20542}, + { 1934, 4813, 6204, 7212, 8979, 11665, 15989, 17811, 20426, 21703}, + { 2288, 3507, 5037, 6841, 8278, 9638, 15066, 16481, 21653, 22214}, + { 2951, 3771, 4878, 7578, 9016, 10298, 14490, 15242, 20223, 20990}, + { 3256, 4791, 6601, 7521, 8644, 9707, 13398, 16078, 19102, 20249}, + { 1827, 2614, 3486, 6039, 12149, 13823, 16191, 17282, 21423, 22041}, + { 1000, 1704, 3002, 6335, 8471, 10500, 14878, 16979, 20026, 22427}, + { 1646, 2286, 3109, 7245, 11493, 12791, 16824, 17667, 18981, 20222}, + { 1708, 2501, 3315, 6737, 8729, 9924, 16089, 17097, 18374, 19917}, + { 2623, 3510, 4478, 5645, 9862, 11115, 15219, 18067, 19583, 20382}, + { 2518, 3434, 4728, 6388, 8082, 9285, 13162, 18383, 19819, 20552}, + { 1726, 2383, 4090, 6303, 7805, 12845, 14612, 17608, 19269, 20181}, + { 2860, 3735, 4838, 6044, 7254, 8402, 14031, 16381, 18037, 19410}, + { 4247, 5993, 7952, 9792, 12342, 14653, 17527, 18774, 20831, 21699}, + { 3502, 4051, 5680, 6805, 8146, 11945, 16649, 17444, 20390, 21564}, + { 3151, 4893, 5899, 7198, 11418, 13073, 15124, 17673, 20520, 21861}, + { 3960, 4848, 5926, 7259, 8811, 10529, 15661, 16560, 18196, 20183}, + { 4499, 6604, 8036, 9251, 10804, 12627, 15880, 17512, 20020, 21046}, + { 4251, 5541, 6654, 8318, 9900, 11686, 15100, 17093, 20572, 21687}, + { 3769, 5327, 7865, 9360, 10684, 11818, 13660, 15366, 18733, 19882}, + { 3083, 3969, 6248, 8121, 9798, 10994, 12393, 13686, 17888, 19105}, + { 2731, 4670, 7063, 9201, 11346, 13735, 16875, 18797, 20787, 22360}, + { 1187, 2227, 4737, 7214, 9622, 12633, 15404, 17968, 20262, 23533}, + { 1911, 2477, 3915, 10098, 11616, 12955, 16223, 17138, 19270, 20729}, + { 1764, 2519, 3887, 6944, 9150, 12590, 16258, 16984, 17924, 18435}, + { 1400, 3674, 7131, 8718, 10688, 12508, 15708, 17711, 19720, 21068}, + { 2322, 3073, 4287, 8108, 9407, 10628, 15862, 16693, 19714, 21474}, + { 2630, 3339, 4758, 8360, 10274, 11333, 12880, 17374, 19221, 19936}, + { 1721, 2577, 5553, 7195, 8651, 10686, 15069, 16953, 18703, 19929} +}; + +/** + * second stage LSP codebook, high and low parts + (both 5-dimensional, with 32 entries (3.2.4 of G.729) + */ +static const int16_t cb_lsp_2nd[1<<VQ_2ND_BITS][10] = { /* (2.13) */ + { -435, -815, -742, 1033, -518, 582, -1201, 829, 86, 385}, + { -833, -891, 463, -8, -1251, 1450, 72, -231, 864, 661}, + {-1021, 231, -306, 321, -220, -163, -526, -754, -1633, 267}, + { 57, -198, -339, -33, -1468, 573, 796, -169, -631, 816}, + { 171, -350, 294, 1660, 453, 519, 291, 159, -640, -1296}, + { -701, -842, -58, 950, 892, 1549, 715, 527, -714, -193}, + { 584, 31, -289, 356, -333, -457, 612, -283, -1381, -741}, + { -109, -808, 231, 77, -87, -344, 1341, 1087, -654, -569}, + { -859, 1236, 550, 854, 714, -543, -1752, -195, -98, -276}, + { -877, -954, -1248, -299, 212, -235, -728, 949, 1517, 895}, + { -77, 344, -620, 763, 413, 502, -362, -960, -483, 1386}, + { -314, -307, -256, -1260, -429, 450, -466, -108, 1010, 2223}, + { 711, 693, 521, 650, 1305, -28, -378, 744, -1005, 240}, + { -112, -271, -500, 946, 1733, 271, -15, 909, -259, 1688}, + { 575, -10, -468, -199, 1101, -1011, 581, -53, -747, 878}, + { 145, -285, -1280, -398, 36, -498, -1377, 18, -444, 1483}, + {-1133, -835, 1350, 1284, -95, 1015, -222, 443, 372, -354}, + {-1459, -1237, 416, -213, 466, 669, 659, 1640, 932, 534}, + { -15, 66, 468, 1019, -748, 1385, -182, -907, -721, -262}, + { -338, 148, 1445, 75, -760, 569, 1247, 337, 416, -121}, + { 389, 239, 1568, 981, 113, 369, -1003, -507, -587, -904}, + { -312, -98, 949, 31, 1104, 72, -141, 1465, 63, -785}, + { 1127, 584, 835, 277, -1159, 208, 301, -882, 117, -404}, + { 539, -114, 856, -493, 223, -912, 623, -76, 276, -440}, + { 2197, 2337, 1268, 670, 304, -267, -525, 140, 882, -139}, + {-1596, 550, 801, -456, -56, -697, 865, 1060, 413, 446}, + { 1154, 593, -77, 1237, -31, 581, -1037, -895, 669, 297}, + { 397, 558, 203, -797, -919, 3, 692, -292, 1050, 782}, + { 334, 1475, 632, -80, 48, -1061, -484, 362, -597, -852}, + { -545, -330, -429, -680, 1133, -1182, -744, 1340, 262, 63}, + { 1320, 827, -398, -576, 341, -774, -483, -1247, -70, 98}, + { -163, 674, -11, -886, 531, -1125, -265, -242, 724, 934} +}; + +/** + * gain codebook (first stage), 8k mode (3.9.2 of G.729) + */ +static const int16_t cb_gain_1st_8k[1<<GC_1ST_IDX_BITS_8K][2] = { /*(0.14) (2.13) */ + { 3242 , 9949 }, + { 1551 , 2425 }, + { 2678 , 27162 }, + { 1921 , 9291 }, + { 1831 , 5022 }, + { 1 , 1516 }, + { 356 , 14756 }, + { 57 , 5404 }, +}; + +/** + * gain codebook (second stage), 8k mode (3.9.2 of G.729) + */ +static const int16_t cb_gain_2nd_8k[1<<GC_2ND_IDX_BITS_8K][2] = { /*(1.14) (1.13) */ + { 5142 , 592 }, + { 17299 , 1861 }, + { 6160 , 2395 }, + { 16112 , 3392 }, + { 826 , 2005 }, + { 18973 , 5935 }, + { 1994 , 0 }, + { 15434 , 237 }, + { 10573 , 2966 }, + { 15132 , 4914 }, + { 11569 , 1196 }, + { 14194 , 1630 }, + { 8091 , 4861 }, + { 15161 , 14276 }, + { 9120 , 525 }, + { 13260 , 3256 }, +}; + +/** + * gain codebook (first stage), 6.4k mode (D.3.9.2 of G.729) + */ +static const int16_t cb_gain_1st_6k4[1<<GC_1ST_IDX_BITS_6K4][2] = +{ /*(0.14) (1.14)*/ + { 5849, 0 }, + { 3171, 9280 }, + { 3617, 6747 }, + { 4987, 22294 }, + { 2929, 1078 }, + { 6068, 6093 }, + { 9425, 2731 }, + { 3915, 12872 }, +}; + +/** + * gain codebook (second stage), 6.4k mode (D.3.9.2 of G.729) + */ +static const int16_t cb_gain_2nd_6k4[1<<GC_2ND_IDX_BITS_6K4][2] = +{ /*(1.14) (1.14)*/ + { 0, 4175 }, + {10828, 27602 }, + {16423, 15724 }, + { 4478, 7324 }, + { 3988, 0 }, + {10291, 11385 }, + {11956, 10735 }, + { 7876, 7821 }, +}; + +/** + * 4th order Moving Average (MA) Predictor codebook (3.2.4 of G.729) + * + * float cb_ma_predictor_float[2][MA_NP][10] = { + * { + * {0.2570, 0.2780, 0.2800, 0.2736, 0.2757, 0.2764, 0.2675, 0.2678, 0.2779, 0.2647}, + * {0.2142, 0.2194, 0.2331, 0.2230, 0.2272, 0.2252, 0.2148, 0.2123, 0.2115, 0.2096}, + * {0.1670, 0.1523, 0.1567, 0.1580, 0.1601, 0.1569, 0.1589, 0.1555, 0.1474, 0.1571}, + * {0.1238, 0.0925, 0.0798, 0.0923, 0.0890, 0.0828, 0.1010, 0.0988, 0.0872, 0.1060}, + * }, + * { + * {0.2360, 0.2405, 0.2499, 0.2495, 0.2517, 0.2591, 0.2636, 0.2625, 0.2551, 0.2310}, + * {0.1285, 0.0925, 0.0779, 0.1060, 0.1183, 0.1176, 0.1277, 0.1268, 0.1193, 0.1211}, + * {0.0981, 0.0589, 0.0401, 0.0654, 0.0761, 0.0728, 0.0841, 0.0826, 0.0776, 0.0891}, + * {0.0923, 0.0486, 0.0287, 0.0498, 0.0526, 0.0482, 0.0621, 0.0636, 0.0584, 0.0794}, + * }, + * }; + * 15 + * cb_ma_predictor[j][k][i] = floor( 2 * cb_ma_predictor_float[j][k][i] ) + * + * j=0..1, i=0..9, k=0..MA_NP-1 + */ +static const int16_t cb_ma_predictor[2][MA_NP][10] = { /* (0.15) */ + { + { 8421, 9109, 9175, 8965, 9034, 9057, 8765, 8775, 9106, 8673}, + { 7018, 7189, 7638, 7307, 7444, 7379, 7038, 6956, 6930, 6868}, + { 5472, 4990, 5134, 5177, 5246, 5141, 5206, 5095, 4830, 5147}, + { 4056, 3031, 2614, 3024, 2916, 2713, 3309, 3237, 2857, 3473} + }, + { + { 7733, 7880, 8188, 8175, 8247, 8490, 8637, 8601, 8359, 7569}, + { 4210, 3031, 2552, 3473, 3876, 3853, 4184, 4154, 3909, 3968}, + { 3214, 1930, 1313, 2143, 2493, 2385, 2755, 2706, 2542, 2919}, + { 3024, 1592, 940, 1631, 1723, 1579, 2034, 2084, 1913, 2601} + } +}; + +/** + * 15 3 + * cb_ma_predictor_sum[j][i] = floor( 2 * (1.0 - sum ( cb_ma_predictor_float[j][k][i] ) ) ) + * k=0 + * j=0..1, i=0..9 + */ +static const int16_t cb_ma_predictor_sum[2][10] = { /* (0.15) */ + { 7798, 8447, 8205, 8293, 8126, 8477, 8447, 8703, 9043, 8604}, + {14585, 18333, 19772, 17344, 16426, 16459, 15155, 15220, 16043, 15708} +}; + +/** + * 12 + * 2 + * cb_ma_predictor_sum_inv[j][i] = floor(---------------------------------------------) + * 3 + * 1.0 - sum ( cb_ma_predictor_float[j][k][i] ) + * k=0 + * j=0..1, i=0..9 + */ +static const int16_t cb_ma_predictor_sum_inv[2][10] = { /* (3.12) */ + {17210, 15888, 16357, 16183, 16516, 15833, 15888, 15421, 14840, 15597}, + { 9202, 7320, 6788, 7738, 8170, 8154, 8856, 8818, 8366, 8544} +}; + +/** + * MA prediction coefficients (3.9.1 of G.729, near Equation 69) + */ +static const uint16_t ma_prediction_coeff[4] = { /* (0.13) */ + 5571, 4751, 2785, 1556 +}; + +/** + * initial LSP coefficients belongs to virtual frame preceding the + * first frame of the stream + */ +static const int16_t lsp_init[10]= { /* (0.15) */ + 30000, 26000, 21000, 15000, 8000, 0, -8000,-15000,-21000,-26000 +}; + +/** + * additional "phase" post-processing filter impulse response (D.6.2 of G.729) + * + * Table contains three impulse responses, correspond to + * different amounts of spreading. + */ +static const int16_t phase_filter[3][40] = +{ + { // maximum spreading (for noise-like segments) + 14690, 11518, 1268, -2762, -5672, 7514, -36, -2808, -3041, 4823, + 2952, -8425, 3785, 1455, 2179, -8638, 8051, -2104, -1455, 777, + 1108, -2386, 2254, -364, -675, -2104, 6046, -5682, 1072, 3123, + -5059, 5312, -2330, -3729, 6924, -3890, 675, -1776, 29, 10145, + }, + { // medium spreading + 30274, 3831, -4037, 2972, -1049, -1003, 2477, -3044, 2815, -2232, + 1753, -1612, 1714, -1776, 1543, -1009, 429, -170, 472, -1265, + 2176, -2707, 2523, -1622, 344, 826, -1530, 1724, -1658, 1701, + -2064, 2644, -3061, 2897, -1979, 557, 780, -1370, 842, 655, + }, + { // no spreading (for voiced speech) + 32767, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + } +}; +#endif /* AVCODEC_G729DATA_H */ |