FFmpeg
g729data.h
Go to the documentation of this file.
1 /*
2  * data for G.729, G729 Annex D decoders
3  * Copyright (c) 2007 Vladimir Voroshilov
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_G729DATA_H
23 #define AVCODEC_G729DATA_H
24 
25 #include <stdint.h>
26 
27 #define MA_NP 4 ///< Moving Average (MA) prediction order
28 
29 #define VQ_1ST_BITS 7 ///< first stage vector of quantizer (size in bits)
30 #define VQ_2ND_BITS 5 ///< second stage vector of quantizer (size in bits)
31 
32 #define GC_1ST_IDX_BITS_8K 3 ///< gain codebook (first stage) index, 8k mode (size in bits)
33 #define GC_2ND_IDX_BITS_8K 4 ///< gain codebook (second stage) index, 8k mode (size in bits)
34 
35 #define GC_1ST_IDX_BITS_6K4 3 ///< gain codebook (first stage) index, 6.4k mode (size in bits)
36 #define GC_2ND_IDX_BITS_6K4 3 ///< gain codebook (second stage) index, 6.4k mode (size in bits)
37 
38 /**
39  * first stage LSP codebook
40  * (10-dimensional, with 128 entries (3.24 of G.729)
41  */
42 static const int16_t cb_lsp_1st[1<<VQ_1ST_BITS][10] = { /* (2.13) */
43  { 1486, 2168, 3751, 9074, 12134, 13944, 17983, 19173, 21190, 21820},
44  { 1730, 2640, 3450, 4870, 6126, 7876, 15644, 17817, 20294, 21902},
45  { 1568, 2256, 3088, 4874, 11063, 13393, 18307, 19293, 21109, 21741},
46  { 1733, 2512, 3357, 4708, 6977, 10296, 17024, 17956, 19145, 20350},
47  { 1744, 2436, 3308, 8731, 10432, 12007, 15614, 16639, 21359, 21913},
48  { 1786, 2369, 3372, 4521, 6795, 12963, 17674, 18988, 20855, 21640},
49  { 1631, 2433, 3361, 6328, 10709, 12013, 13277, 13904, 19441, 21088},
50  { 1489, 2364, 3291, 6250, 9227, 10403, 13843, 15278, 17721, 21451},
51  { 1869, 2533, 3475, 4365, 9152, 14513, 15908, 17022, 20611, 21411},
52  { 2070, 3025, 4333, 5854, 7805, 9231, 10597, 16047, 20109, 21834},
53  { 1910, 2673, 3419, 4261, 11168, 15111, 16577, 17591, 19310, 20265},
54  { 1141, 1815, 2624, 4623, 6495, 9588, 13968, 16428, 19351, 21286},
55  { 2192, 3171, 4707, 5808, 10904, 12500, 14162, 15664, 21124, 21789},
56  { 1286, 1907, 2548, 3453, 9574, 11964, 15978, 17344, 19691, 22495},
57  { 1921, 2720, 4604, 6684, 11503, 12992, 14350, 15262, 16997, 20791},
58  { 2052, 2759, 3897, 5246, 6638, 10267, 15834, 16814, 18149, 21675},
59  { 1798, 2497, 5617, 11449, 13189, 14711, 17050, 18195, 20307, 21182},
60  { 1009, 1647, 2889, 5709, 9541, 12354, 15231, 18494, 20966, 22033},
61  { 3016, 3794, 5406, 7469, 12488, 13984, 15328, 16334, 19952, 20791},
62  { 2203, 3040, 3796, 5442, 11987, 13512, 14931, 16370, 17856, 18803},
63  { 2912, 4292, 7988, 9572, 11562, 13244, 14556, 16529, 20004, 21073},
64  { 2861, 3607, 5923, 7034, 9234, 12054, 13729, 18056, 20262, 20974},
65  { 3069, 4311, 5967, 7367, 11482, 12699, 14309, 16233, 18333, 19172},
66  { 2434, 3661, 4866, 5798, 10383, 11722, 13049, 15668, 18862, 19831},
67  { 2020, 2605, 3860, 9241, 13275, 14644, 16010, 17099, 19268, 20251},
68  { 1877, 2809, 3590, 4707, 11056, 12441, 15622, 17168, 18761, 19907},
69  { 2107, 2873, 3673, 5799, 13579, 14687, 15938, 17077, 18890, 19831},
70  { 1612, 2284, 2944, 3572, 8219, 13959, 15924, 17239, 18592, 20117},
71  { 2420, 3156, 6542, 10215, 12061, 13534, 15305, 16452, 18717, 19880},
72  { 1667, 2612, 3534, 5237, 10513, 11696, 12940, 16798, 18058, 19378},
73  { 2388, 3017, 4839, 9333, 11413, 12730, 15024, 16248, 17449, 18677},
74  { 1875, 2786, 4231, 6320, 8694, 10149, 11785, 17013, 18608, 19960},
75  { 679, 1411, 4654, 8006, 11446, 13249, 15763, 18127, 20361, 21567},
76  { 1838, 2596, 3578, 4608, 5650, 11274, 14355, 15886, 20579, 21754},
77  { 1303, 1955, 2395, 3322, 12023, 13764, 15883, 18077, 20180, 21232},
78  { 1438, 2102, 2663, 3462, 8328, 10362, 13763, 17248, 19732, 22344},
79  { 860, 1904, 6098, 7775, 9815, 12007, 14821, 16709, 19787, 21132},
80  { 1673, 2723, 3704, 6125, 7668, 9447, 13683, 14443, 20538, 21731},
81  { 1246, 1849, 2902, 4508, 7221, 12710, 14835, 16314, 19335, 22720},
82  { 1525, 2260, 3862, 5659, 7342, 11748, 13370, 14442, 18044, 21334},
83  { 1196, 1846, 3104, 7063, 10972, 12905, 14814, 17037, 19922, 22636},
84  { 2147, 3106, 4475, 6511, 8227, 9765, 10984, 12161, 18971, 21300},
85  { 1585, 2405, 2994, 4036, 11481, 13177, 14519, 15431, 19967, 21275},
86  { 1778, 2688, 3614, 4680, 9465, 11064, 12473, 16320, 19742, 20800},
87  { 1862, 2586, 3492, 6719, 11708, 13012, 14364, 16128, 19610, 20425},
88  { 1395, 2156, 2669, 3386, 10607, 12125, 13614, 16705, 18976, 21367},
89  { 1444, 2117, 3286, 6233, 9423, 12981, 14998, 15853, 17188, 21857},
90  { 2004, 2895, 3783, 4897, 6168, 7297, 12609, 16445, 19297, 21465},
91  { 1495, 2863, 6360, 8100, 11399, 14271, 15902, 17711, 20479, 22061},
92  { 2484, 3114, 5718, 7097, 8400, 12616, 14073, 14847, 20535, 21396},
93  { 2424, 3277, 5296, 6284, 11290, 12903, 16022, 17508, 19333, 20283},
94  { 2565, 3778, 5360, 6989, 8782, 10428, 14390, 15742, 17770, 21734},
95  { 2727, 3384, 6613, 9254, 10542, 12236, 14651, 15687, 20074, 21102},
96  { 1916, 2953, 6274, 8088, 9710, 10925, 12392, 16434, 20010, 21183},
97  { 3384, 4366, 5349, 7667, 11180, 12605, 13921, 15324, 19901, 20754},
98  { 3075, 4283, 5951, 7619, 9604, 11010, 12384, 14006, 20658, 21497},
99  { 1751, 2455, 5147, 9966, 11621, 13176, 14739, 16470, 20788, 21756},
100  { 1442, 2188, 3330, 6813, 8929, 12135, 14476, 15306, 19635, 20544},
101  { 2294, 2895, 4070, 8035, 12233, 13416, 14762, 17367, 18952, 19688},
102  { 1937, 2659, 4602, 6697, 9071, 12863, 14197, 15230, 16047, 18877},
103  { 2071, 2663, 4216, 9445, 10887, 12292, 13949, 14909, 19236, 20341},
104  { 1740, 2491, 3488, 8138, 9656, 11153, 13206, 14688, 20896, 21907},
105  { 2199, 2881, 4675, 8527, 10051, 11408, 14435, 15463, 17190, 20597},
106  { 1943, 2988, 4177, 6039, 7478, 8536, 14181, 15551, 17622, 21579},
107  { 1825, 3175, 7062, 9818, 12824, 15450, 18330, 19856, 21830, 22412},
108  { 2464, 3046, 4822, 5977, 7696, 15398, 16730, 17646, 20588, 21320},
109  { 2550, 3393, 5305, 6920, 10235, 14083, 18143, 19195, 20681, 21336},
110  { 3003, 3799, 5321, 6437, 7919, 11643, 15810, 16846, 18119, 18980},
111  { 3455, 4157, 6838, 8199, 9877, 12314, 15905, 16826, 19949, 20892},
112  { 3052, 3769, 4891, 5810, 6977, 10126, 14788, 15990, 19773, 20904},
113  { 3671, 4356, 5827, 6997, 8460, 12084, 14154, 14939, 19247, 20423},
114  { 2716, 3684, 5246, 6686, 8463, 10001, 12394, 14131, 16150, 19776},
115  { 1945, 2638, 4130, 7995, 14338, 15576, 17057, 18206, 20225, 20997},
116  { 2304, 2928, 4122, 4824, 5640, 13139, 15825, 16938, 20108, 21054},
117  { 1800, 2516, 3350, 5219, 13406, 15948, 17618, 18540, 20531, 21252},
118  { 1436, 2224, 2753, 4546, 9657, 11245, 15177, 16317, 17489, 19135},
119  { 2319, 2899, 4980, 6936, 8404, 13489, 15554, 16281, 20270, 20911},
120  { 2187, 2919, 4610, 5875, 7390, 12556, 14033, 16794, 20998, 21769},
121  { 2235, 2923, 5121, 6259, 8099, 13589, 15340, 16340, 17927, 20159},
122  { 1765, 2638, 3751, 5730, 7883, 10108, 13633, 15419, 16808, 18574},
123  { 3460, 5741, 9596, 11742, 14413, 16080, 18173, 19090, 20845, 21601},
124  { 3735, 4426, 6199, 7363, 9250, 14489, 16035, 17026, 19873, 20876},
125  { 3521, 4778, 6887, 8680, 12717, 14322, 15950, 18050, 20166, 21145},
126  { 2141, 2968, 6865, 8051, 10010, 13159, 14813, 15861, 17528, 18655},
127  { 4148, 6128, 9028, 10871, 12686, 14005, 15976, 17208, 19587, 20595},
128  { 4403, 5367, 6634, 8371, 10163, 11599, 14963, 16331, 17982, 18768},
129  { 4091, 5386, 6852, 8770, 11563, 13290, 15728, 16930, 19056, 20102},
130  { 2746, 3625, 5299, 7504, 10262, 11432, 13172, 15490, 16875, 17514},
131  { 2248, 3556, 8539, 10590, 12665, 14696, 16515, 17824, 20268, 21247},
132  { 1279, 1960, 3920, 7793, 10153, 14753, 16646, 18139, 20679, 21466},
133  { 2440, 3475, 6737, 8654, 12190, 14588, 17119, 17925, 19110, 19979},
134  { 1879, 2514, 4497, 7572, 10017, 14948, 16141, 16897, 18397, 19376},
135  { 2804, 3688, 7490, 10086, 11218, 12711, 16307, 17470, 20077, 21126},
136  { 2023, 2682, 3873, 8268, 10255, 11645, 15187, 17102, 18965, 19788},
137  { 2823, 3605, 5815, 8595, 10085, 11469, 16568, 17462, 18754, 19876},
138  { 2851, 3681, 5280, 7648, 9173, 10338, 14961, 16148, 17559, 18474},
139  { 1348, 2645, 5826, 8785, 10620, 12831, 16255, 18319, 21133, 22586},
140  { 2141, 3036, 4293, 6082, 7593, 10629, 17158, 18033, 21466, 22084},
141  { 1608, 2375, 3384, 6878, 9970, 11227, 16928, 17650, 20185, 21120},
142  { 2774, 3616, 5014, 6557, 7788, 8959, 17068, 18302, 19537, 20542},
143  { 1934, 4813, 6204, 7212, 8979, 11665, 15989, 17811, 20426, 21703},
144  { 2288, 3507, 5037, 6841, 8278, 9638, 15066, 16481, 21653, 22214},
145  { 2951, 3771, 4878, 7578, 9016, 10298, 14490, 15242, 20223, 20990},
146  { 3256, 4791, 6601, 7521, 8644, 9707, 13398, 16078, 19102, 20249},
147  { 1827, 2614, 3486, 6039, 12149, 13823, 16191, 17282, 21423, 22041},
148  { 1000, 1704, 3002, 6335, 8471, 10500, 14878, 16979, 20026, 22427},
149  { 1646, 2286, 3109, 7245, 11493, 12791, 16824, 17667, 18981, 20222},
150  { 1708, 2501, 3315, 6737, 8729, 9924, 16089, 17097, 18374, 19917},
151  { 2623, 3510, 4478, 5645, 9862, 11115, 15219, 18067, 19583, 20382},
152  { 2518, 3434, 4728, 6388, 8082, 9285, 13162, 18383, 19819, 20552},
153  { 1726, 2383, 4090, 6303, 7805, 12845, 14612, 17608, 19269, 20181},
154  { 2860, 3735, 4838, 6044, 7254, 8402, 14031, 16381, 18037, 19410},
155  { 4247, 5993, 7952, 9792, 12342, 14653, 17527, 18774, 20831, 21699},
156  { 3502, 4051, 5680, 6805, 8146, 11945, 16649, 17444, 20390, 21564},
157  { 3151, 4893, 5899, 7198, 11418, 13073, 15124, 17673, 20520, 21861},
158  { 3960, 4848, 5926, 7259, 8811, 10529, 15661, 16560, 18196, 20183},
159  { 4499, 6604, 8036, 9251, 10804, 12627, 15880, 17512, 20020, 21046},
160  { 4251, 5541, 6654, 8318, 9900, 11686, 15100, 17093, 20572, 21687},
161  { 3769, 5327, 7865, 9360, 10684, 11818, 13660, 15366, 18733, 19882},
162  { 3083, 3969, 6248, 8121, 9798, 10994, 12393, 13686, 17888, 19105},
163  { 2731, 4670, 7063, 9201, 11346, 13735, 16875, 18797, 20787, 22360},
164  { 1187, 2227, 4737, 7214, 9622, 12633, 15404, 17968, 20262, 23533},
165  { 1911, 2477, 3915, 10098, 11616, 12955, 16223, 17138, 19270, 20729},
166  { 1764, 2519, 3887, 6944, 9150, 12590, 16258, 16984, 17924, 18435},
167  { 1400, 3674, 7131, 8718, 10688, 12508, 15708, 17711, 19720, 21068},
168  { 2322, 3073, 4287, 8108, 9407, 10628, 15862, 16693, 19714, 21474},
169  { 2630, 3339, 4758, 8360, 10274, 11333, 12880, 17374, 19221, 19936},
170  { 1721, 2577, 5553, 7195, 8651, 10686, 15069, 16953, 18703, 19929}
171 };
172 
173 /**
174  * second stage LSP codebook, high and low parts
175  (both 5-dimensional, with 32 entries (3.2.4 of G.729)
176  */
177 static const int16_t cb_lsp_2nd[1<<VQ_2ND_BITS][10] = { /* (2.13) */
178  { -435, -815, -742, 1033, -518, 582, -1201, 829, 86, 385},
179  { -833, -891, 463, -8, -1251, 1450, 72, -231, 864, 661},
180  {-1021, 231, -306, 321, -220, -163, -526, -754, -1633, 267},
181  { 57, -198, -339, -33, -1468, 573, 796, -169, -631, 816},
182  { 171, -350, 294, 1660, 453, 519, 291, 159, -640, -1296},
183  { -701, -842, -58, 950, 892, 1549, 715, 527, -714, -193},
184  { 584, 31, -289, 356, -333, -457, 612, -283, -1381, -741},
185  { -109, -808, 231, 77, -87, -344, 1341, 1087, -654, -569},
186  { -859, 1236, 550, 854, 714, -543, -1752, -195, -98, -276},
187  { -877, -954, -1248, -299, 212, -235, -728, 949, 1517, 895},
188  { -77, 344, -620, 763, 413, 502, -362, -960, -483, 1386},
189  { -314, -307, -256, -1260, -429, 450, -466, -108, 1010, 2223},
190  { 711, 693, 521, 650, 1305, -28, -378, 744, -1005, 240},
191  { -112, -271, -500, 946, 1733, 271, -15, 909, -259, 1688},
192  { 575, -10, -468, -199, 1101, -1011, 581, -53, -747, 878},
193  { 145, -285, -1280, -398, 36, -498, -1377, 18, -444, 1483},
194  {-1133, -835, 1350, 1284, -95, 1015, -222, 443, 372, -354},
195  {-1459, -1237, 416, -213, 466, 669, 659, 1640, 932, 534},
196  { -15, 66, 468, 1019, -748, 1385, -182, -907, -721, -262},
197  { -338, 148, 1445, 75, -760, 569, 1247, 337, 416, -121},
198  { 389, 239, 1568, 981, 113, 369, -1003, -507, -587, -904},
199  { -312, -98, 949, 31, 1104, 72, -141, 1465, 63, -785},
200  { 1127, 584, 835, 277, -1159, 208, 301, -882, 117, -404},
201  { 539, -114, 856, -493, 223, -912, 623, -76, 276, -440},
202  { 2197, 2337, 1268, 670, 304, -267, -525, 140, 882, -139},
203  {-1596, 550, 801, -456, -56, -697, 865, 1060, 413, 446},
204  { 1154, 593, -77, 1237, -31, 581, -1037, -895, 669, 297},
205  { 397, 558, 203, -797, -919, 3, 692, -292, 1050, 782},
206  { 334, 1475, 632, -80, 48, -1061, -484, 362, -597, -852},
207  { -545, -330, -429, -680, 1133, -1182, -744, 1340, 262, 63},
208  { 1320, 827, -398, -576, 341, -774, -483, -1247, -70, 98},
209  { -163, 674, -11, -886, 531, -1125, -265, -242, 724, 934}
210 };
211 
212 /**
213  * gain codebook (first stage), 8k mode (3.9.2 of G.729)
214  */
215 static const int16_t cb_gain_1st_8k[1<<GC_1ST_IDX_BITS_8K][2] = { /*(0.14) (2.13) */
216  { 3242 , 9949 },
217  { 1551 , 2425 },
218  { 2678 , 27162 },
219  { 1921 , 9291 },
220  { 1831 , 5022 },
221  { 1 , 1516 },
222  { 356 , 14756 },
223  { 57 , 5404 },
224 };
225 
226 /**
227  * gain codebook (second stage), 8k mode (3.9.2 of G.729)
228  */
229 static const int16_t cb_gain_2nd_8k[1<<GC_2ND_IDX_BITS_8K][2] = { /*(1.14) (1.13) */
230  { 5142 , 592 },
231  { 17299 , 1861 },
232  { 6160 , 2395 },
233  { 16112 , 3392 },
234  { 826 , 2005 },
235  { 18973 , 5935 },
236  { 1994 , 0 },
237  { 15434 , 237 },
238  { 10573 , 2966 },
239  { 15132 , 4914 },
240  { 11569 , 1196 },
241  { 14194 , 1630 },
242  { 8091 , 4861 },
243  { 15161 , 14276 },
244  { 9120 , 525 },
245  { 13260 , 3256 },
246 };
247 
248 /**
249  * gain codebook (first stage), 6.4k mode (D.3.9.2 of G.729)
250  */
251 static const int16_t cb_gain_1st_6k4[1<<GC_1ST_IDX_BITS_6K4][2] =
252 { /*(0.14) (1.14)*/
253  { 5849, 0 },
254  { 3171, 9280 },
255  { 3617, 6747 },
256  { 4987, 22294 },
257  { 2929, 1078 },
258  { 6068, 6093 },
259  { 9425, 2731 },
260  { 3915, 12872 },
261 };
262 
263 /**
264  * gain codebook (second stage), 6.4k mode (D.3.9.2 of G.729)
265  */
266 static const int16_t cb_gain_2nd_6k4[1<<GC_2ND_IDX_BITS_6K4][2] =
267 { /*(1.14) (1.14)*/
268  { 0, 4175 },
269  {10828, 27602 },
270  {16423, 15724 },
271  { 4478, 7324 },
272  { 3988, 0 },
273  {10291, 11385 },
274  {11956, 10735 },
275  { 7876, 7821 },
276 };
277 
278 /**
279  * 4th order Moving Average (MA) Predictor codebook (3.2.4 of G.729)
280  *
281  * float cb_ma_predictor_float[2][MA_NP][10] = {
282  * {
283  * {0.2570, 0.2780, 0.2800, 0.2736, 0.2757, 0.2764, 0.2675, 0.2678, 0.2779, 0.2647},
284  * {0.2142, 0.2194, 0.2331, 0.2230, 0.2272, 0.2252, 0.2148, 0.2123, 0.2115, 0.2096},
285  * {0.1670, 0.1523, 0.1567, 0.1580, 0.1601, 0.1569, 0.1589, 0.1555, 0.1474, 0.1571},
286  * {0.1238, 0.0925, 0.0798, 0.0923, 0.0890, 0.0828, 0.1010, 0.0988, 0.0872, 0.1060},
287  * },
288  * {
289  * {0.2360, 0.2405, 0.2499, 0.2495, 0.2517, 0.2591, 0.2636, 0.2625, 0.2551, 0.2310},
290  * {0.1285, 0.0925, 0.0779, 0.1060, 0.1183, 0.1176, 0.1277, 0.1268, 0.1193, 0.1211},
291  * {0.0981, 0.0589, 0.0401, 0.0654, 0.0761, 0.0728, 0.0841, 0.0826, 0.0776, 0.0891},
292  * {0.0923, 0.0486, 0.0287, 0.0498, 0.0526, 0.0482, 0.0621, 0.0636, 0.0584, 0.0794},
293  * },
294  * };
295  * 15
296  * cb_ma_predictor[j][k][i] = floor( 2 * cb_ma_predictor_float[j][k][i] )
297  *
298  * j=0..1, i=0..9, k=0..MA_NP-1
299  */
300 static const int16_t cb_ma_predictor[2][MA_NP][10] = { /* (0.15) */
301  {
302  { 8421, 9109, 9175, 8965, 9034, 9057, 8765, 8775, 9106, 8673},
303  { 7018, 7189, 7638, 7307, 7444, 7379, 7038, 6956, 6930, 6868},
304  { 5472, 4990, 5134, 5177, 5246, 5141, 5206, 5095, 4830, 5147},
305  { 4056, 3031, 2614, 3024, 2916, 2713, 3309, 3237, 2857, 3473}
306  },
307  {
308  { 7733, 7880, 8188, 8175, 8247, 8490, 8637, 8601, 8359, 7569},
309  { 4210, 3031, 2552, 3473, 3876, 3853, 4184, 4154, 3909, 3968},
310  { 3214, 1930, 1313, 2143, 2493, 2385, 2755, 2706, 2542, 2919},
311  { 3024, 1592, 940, 1631, 1723, 1579, 2034, 2084, 1913, 2601}
312  }
313 };
314 
315 /**
316  * 15 3
317  * cb_ma_predictor_sum[j][i] = floor( 2 * (1.0 - sum ( cb_ma_predictor_float[j][k][i] ) ) )
318  * k=0
319  * j=0..1, i=0..9
320  */
321 static const int16_t cb_ma_predictor_sum[2][10] = { /* (0.15) */
322  { 7798, 8447, 8205, 8293, 8126, 8477, 8447, 8703, 9043, 8604},
323  {14585, 18333, 19772, 17344, 16426, 16459, 15155, 15220, 16043, 15708}
324 };
325 
326 /**
327  * 12
328  * 2
329  * cb_ma_predictor_sum_inv[j][i] = floor(---------------------------------------------)
330  * 3
331  * 1.0 - sum ( cb_ma_predictor_float[j][k][i] )
332  * k=0
333  * j=0..1, i=0..9
334  */
335 static const int16_t cb_ma_predictor_sum_inv[2][10] = { /* (3.12) */
336  {17210, 15888, 16357, 16183, 16516, 15833, 15888, 15421, 14840, 15597},
337  { 9202, 7320, 6788, 7738, 8170, 8154, 8856, 8818, 8366, 8544}
338 };
339 
340 /**
341  * MA prediction coefficients (3.9.1 of G.729, near Equation 69)
342  */
343 static const uint16_t ma_prediction_coeff[4] = { /* (0.13) */
344  5571, 4751, 2785, 1556
345 };
346 
347 /**
348  * initial LSP coefficients belongs to virtual frame preceding the
349  * first frame of the stream
350  */
351 static const int16_t lsp_init[10]= { /* (0.15) */
352  30000, 26000, 21000, 15000, 8000, 0, -8000,-15000,-21000,-26000
353 };
354 
355 /**
356  * additional "phase" post-processing filter impulse response (D.6.2 of G.729)
357  *
358  * Table contains three impulse responses, correspond to
359  * different amounts of spreading.
360  */
361 static const int16_t phase_filter[3][40] =
362 {
363  { // maximum spreading (for noise-like segments)
364  14690, 11518, 1268, -2762, -5672, 7514, -36, -2808, -3041, 4823,
365  2952, -8425, 3785, 1455, 2179, -8638, 8051, -2104, -1455, 777,
366  1108, -2386, 2254, -364, -675, -2104, 6046, -5682, 1072, 3123,
367  -5059, 5312, -2330, -3729, 6924, -3890, 675, -1776, 29, 10145,
368  },
369  { // medium spreading
370  30274, 3831, -4037, 2972, -1049, -1003, 2477, -3044, 2815, -2232,
371  1753, -1612, 1714, -1776, 1543, -1009, 429, -170, 472, -1265,
372  2176, -2707, 2523, -1622, 344, 826, -1530, 1724, -1658, 1701,
373  -2064, 2644, -3061, 2897, -1979, 557, 780, -1370, 842, 655,
374  },
375  { // no spreading (for voiced speech)
376  32767, 0, 0, 0, 0, 0, 0, 0, 0, 0,
377  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
378  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
379  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
380  }
381 };
382 #endif /* AVCODEC_G729DATA_H */
cb_gain_2nd_8k
static const int16_t cb_gain_2nd_8k[1<< GC_2ND_IDX_BITS_8K][2]
gain codebook (second stage), 8k mode (3.9.2 of G.729)
Definition: g729data.h:229
lsp_init
static const int16_t lsp_init[10]
initial LSP coefficients belongs to virtual frame preceding the first frame of the stream
Definition: g729data.h:351
cb_gain_1st_6k4
static const int16_t cb_gain_1st_6k4[1<< GC_1ST_IDX_BITS_6K4][2]
gain codebook (first stage), 6.4k mode (D.3.9.2 of G.729)
Definition: g729data.h:251
MA_NP
#define MA_NP
Moving Average (MA) prediction order.
Definition: g729data.h:27
GC_1ST_IDX_BITS_8K
#define GC_1ST_IDX_BITS_8K
gain codebook (first stage) index, 8k mode (size in bits)
Definition: g729data.h:32
VQ_2ND_BITS
#define VQ_2ND_BITS
second stage vector of quantizer (size in bits)
Definition: g729data.h:30
cb_ma_predictor_sum
static const int16_t cb_ma_predictor_sum[2][10]
Definition: g729data.h:321
cb_ma_predictor_sum_inv
static const int16_t cb_ma_predictor_sum_inv[2][10]
Definition: g729data.h:335
cb_lsp_1st
static const int16_t cb_lsp_1st[1<< VQ_1ST_BITS][10]
first stage LSP codebook (10-dimensional, with 128 entries (3.24 of G.729)
Definition: g729data.h:42
GC_2ND_IDX_BITS_8K
#define GC_2ND_IDX_BITS_8K
gain codebook (second stage) index, 8k mode (size in bits)
Definition: g729data.h:33
cb_ma_predictor
static const int16_t cb_ma_predictor[2][MA_NP][10]
4th order Moving Average (MA) Predictor codebook (3.2.4 of G.729)
Definition: g729data.h:300
ma_prediction_coeff
static const uint16_t ma_prediction_coeff[4]
MA prediction coefficients (3.9.1 of G.729, near Equation 69)
Definition: g729data.h:343
VQ_1ST_BITS
#define VQ_1ST_BITS
first stage vector of quantizer (size in bits)
Definition: g729data.h:29
cb_gain_2nd_6k4
static const int16_t cb_gain_2nd_6k4[1<< GC_2ND_IDX_BITS_6K4][2]
gain codebook (second stage), 6.4k mode (D.3.9.2 of G.729)
Definition: g729data.h:266
phase_filter
static const int16_t phase_filter[3][40]
additional "phase" post-processing filter impulse response (D.6.2 of G.729)
Definition: g729data.h:361
cb_gain_1st_8k
static const int16_t cb_gain_1st_8k[1<< GC_1ST_IDX_BITS_8K][2]
gain codebook (first stage), 8k mode (3.9.2 of G.729)
Definition: g729data.h:215
GC_2ND_IDX_BITS_6K4
#define GC_2ND_IDX_BITS_6K4
gain codebook (second stage) index, 6.4k mode (size in bits)
Definition: g729data.h:36
cb_lsp_2nd
static const int16_t cb_lsp_2nd[1<< VQ_2ND_BITS][10]
second stage LSP codebook, high and low parts (both 5-dimensional, with 32 entries (3....
Definition: g729data.h:177
GC_1ST_IDX_BITS_6K4
#define GC_1ST_IDX_BITS_6K4
gain codebook (first stage) index, 6.4k mode (size in bits)
Definition: g729data.h:35
Generated on Thu Nov 7 2024 19:21:38 for FFmpeg by   doxygen 1.8.17