3 * Copyright (c) 2007 Reynaldo H. Verdejo Pinochet
5 * This file is part of FFmpeg.
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
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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.
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
22 #ifndef AVCODEC_QCELPDATA_H
23 #define AVCODEC_QCELPDATA_H
27 * Data tables for the QCELP decoder
28 * @author Reynaldo H. Verdejo Pinochet
29 * @remark FFmpeg merging spearheaded by Kenan Gillet
34 #include "libavutil/common.h"
37 * pre-calculated table for hammsinc function
38 * Only half of the table is needed because of symmetry.
40 * TIA/EIA/IS-733 2.4.5.2-2/3
42 static const float qcelp_hammsinc_table[4] = { -0.006822, 0.041249, -0.143459, 0.588863};
45 uint8_t index; /*!< index into the QCELPContext structure */
46 uint8_t bitpos; /*!< position of the lowest bit in the value's byte */
47 uint8_t bitlen; /*!< number of bits to read */
50 #define QCELP_OF(variable, bit, len) {offsetof(QCELPContext, variable), bit, len}
52 /* Disable the below code for now to allow 'make checkheaders' to pass. */
55 * bitmap unpacking tables for RATE_FULL
57 * TIA/EIA/IS-733 Table 2.4.7.1-1
59 static const QCELPBitmap qcelp_rate_full_bitmap[] = {
61 QCELP_OF(lspv [ 2], 0, 3), // 265
62 QCELP_OF(lspv [ 1], 0, 7), // 262
63 QCELP_OF(lspv [ 0], 0, 6), // 255
64 QCELP_OF(lspv [ 4], 0, 6), // 249
65 QCELP_OF(lspv [ 3], 0, 6), // 243
66 QCELP_OF(lspv [ 2], 3, 4), // 237
67 QCELP_OF(cbsign[ 0], 0, 1), // 233
68 QCELP_OF(cbgain[ 0], 0, 4), // 232
69 QCELP_OF(pfrac [ 0], 0, 1), // 228
70 QCELP_OF(plag [ 0], 0, 7), // 227
71 QCELP_OF(pgain [ 0], 0, 3), // 220
72 QCELP_OF(cindex[ 1], 0, 4), // 217
73 QCELP_OF(cbsign[ 1], 0, 1), // 213
74 QCELP_OF(cbgain[ 1], 0, 4), // 212
75 QCELP_OF(cindex[ 0], 0, 7), // 208
76 QCELP_OF(cbgain[ 3], 0, 1), // 201
77 QCELP_OF(cindex[ 2], 0, 7), // 200
78 QCELP_OF(cbsign[ 2], 0, 1), // 193
79 QCELP_OF(cbgain[ 2], 0, 4), // 192
80 QCELP_OF(cindex[ 1], 4, 3), // 188
81 QCELP_OF(plag [ 1], 0, 3), // 185
82 QCELP_OF(pgain [ 1], 0, 3), // 182
83 QCELP_OF(cindex[ 3], 0, 7), // 179
84 QCELP_OF(cbsign[ 3], 0, 1), // 172
85 QCELP_OF(cbgain[ 3], 1, 2), // 171
86 QCELP_OF(cindex[ 4], 0, 6), // 169
87 QCELP_OF(cbsign[ 4], 0, 1), // 163
88 QCELP_OF(cbgain[ 4], 0, 4), // 162
89 QCELP_OF(pfrac [ 1], 0, 1), // 158
90 QCELP_OF(plag [ 1], 3, 4), // 157
91 QCELP_OF(cbgain[ 6], 0, 3), // 153
92 QCELP_OF(cindex[ 5], 0, 7), // 150
93 QCELP_OF(cbsign[ 5], 0, 1), // 143
94 QCELP_OF(cbgain[ 5], 0, 4), // 142
95 QCELP_OF(cindex[ 4], 6, 1), // 138
96 QCELP_OF(cindex[ 7], 0, 3), // 137
97 QCELP_OF(cbsign[ 7], 0, 1), // 134
98 QCELP_OF(cbgain[ 7], 0, 3), // 133
99 QCELP_OF(cindex[ 6], 0, 7), // 130
100 QCELP_OF(cbsign[ 6], 0, 1), // 123
101 QCELP_OF(cbgain[ 6], 3, 1), // 122
102 QCELP_OF(cbgain[ 8], 0, 1), // 121
103 QCELP_OF(pfrac [ 2], 0, 1), // 120
104 QCELP_OF(plag [ 2], 0, 7), // 119
105 QCELP_OF(pgain [ 2], 0, 3), // 112
106 QCELP_OF(cindex[ 7], 3, 4), // 109
107 QCELP_OF(cbsign[ 9], 0, 1), // 105
108 QCELP_OF(cbgain[ 9], 0, 4), // 104
109 QCELP_OF(cindex[ 8], 0, 7), // 100
110 QCELP_OF(cbsign[ 8], 0, 1), // 93
111 QCELP_OF(cbgain[ 8], 1, 3), // 92
112 QCELP_OF(cindex[10], 0, 4), // 89
113 QCELP_OF(cbsign[10], 0, 1), // 85
114 QCELP_OF(cbgain[10], 0, 4), // 84
115 QCELP_OF(cindex[ 9], 0, 7), // 80
116 QCELP_OF(pgain [ 3], 0, 2), // 73
117 QCELP_OF(cindex[11], 0, 7), // 71
118 QCELP_OF(cbsign[11], 0, 1), // 64
119 QCELP_OF(cbgain[11], 0, 3), // 63
120 QCELP_OF(cindex[10], 4, 3), // 60
121 QCELP_OF(cindex[12], 0, 2), // 57
122 QCELP_OF(cbsign[12], 0, 1), // 55
123 QCELP_OF(cbgain[12], 0, 4), // 54
124 QCELP_OF(pfrac [ 3], 0, 1), // 50
125 QCELP_OF(plag [ 3], 0, 7), // 49
126 QCELP_OF(pgain [ 3], 2, 1), // 42
127 QCELP_OF(cindex[13], 0, 6), // 41
128 QCELP_OF(cbsign[13], 0, 1), // 35
129 QCELP_OF(cbgain[13], 0, 4), // 34
130 QCELP_OF(cindex[12], 2, 5), // 30
131 QCELP_OF(cbgain[15], 0, 3), // 25
132 QCELP_OF(cindex[14], 0, 7), // 22
133 QCELP_OF(cbsign[14], 0, 1), // 15
134 QCELP_OF(cbgain[14], 0, 4), // 14
135 QCELP_OF(cindex[13], 6, 1), // 10
136 QCELP_OF(reserved, 0, 2), // 9
137 QCELP_OF(cindex[15], 0, 7), // 7
138 QCELP_OF(cbsign[15], 0, 1) // 0
142 * bitmap unpacking tables for RATE_HALF
144 * TIA/EIA/IS-733 Table 2.4.7.2-1
146 static const QCELPBitmap qcelp_rate_half_bitmap[] = {
148 QCELP_OF(lspv [2], 0, 3), // 123
149 QCELP_OF(lspv [1], 0, 7), // 120
150 QCELP_OF(lspv [0], 0, 6), // 113
151 QCELP_OF(lspv [4], 0, 6), // 107
152 QCELP_OF(lspv [3], 0, 6), // 101
153 QCELP_OF(lspv [2], 3, 4), // 95
154 QCELP_OF(cbsign[0], 0, 1), // 91
155 QCELP_OF(cbgain[0], 0, 4), // 90
156 QCELP_OF(pfrac [0], 0, 1), // 86
157 QCELP_OF(plag [0], 0, 7), // 85
158 QCELP_OF(pgain [0], 0, 3), // 78
159 QCELP_OF(plag [1], 0, 6), // 75
160 QCELP_OF(pgain [1], 0, 3), // 69
161 QCELP_OF(cindex[0], 0, 7), // 66
162 QCELP_OF(pgain [2], 0, 2), // 59
163 QCELP_OF(cindex[1], 0, 7), // 57
164 QCELP_OF(cbsign[1], 0, 1), // 50
165 QCELP_OF(cbgain[1], 0, 4), // 49
166 QCELP_OF(pfrac [1], 0, 1), // 45
167 QCELP_OF(plag [1], 6, 1), // 44
168 QCELP_OF(cindex[2], 0, 2), // 43
169 QCELP_OF(cbsign[2], 0, 1), // 41
170 QCELP_OF(cbgain[2], 0, 4), // 40
171 QCELP_OF(pfrac [2], 0, 1), // 36
172 QCELP_OF(plag [2], 0, 7), // 35
173 QCELP_OF(pgain [2], 2, 1), // 28
174 QCELP_OF(pfrac [3], 0, 1), // 27
175 QCELP_OF(plag [3], 0, 7), // 26
176 QCELP_OF(pgain [3], 0, 3), // 19
177 QCELP_OF(cindex[2], 2, 5), // 16
178 QCELP_OF(cindex[3], 0, 7), // 11
179 QCELP_OF(cbsign[3], 0, 1), // 4
180 QCELP_OF(cbgain[3], 0, 4) // 3
184 * bitmap unpacking tables for RATE_QUARTER
186 * TIA/EIA/IS-733 Table 2.4.7.3-1
188 static const QCELPBitmap qcelp_rate_quarter_bitmap[] = {
190 QCELP_OF(lspv [2], 0, 3), // 53
191 QCELP_OF(lspv [1], 0, 7), // 50
192 QCELP_OF(lspv [0], 0, 6), // 43
193 QCELP_OF(lspv [4], 0, 6), // 37
194 QCELP_OF(lspv [3], 0, 6), // 31
195 QCELP_OF(lspv [2], 3, 4), // 25
196 QCELP_OF(cbgain[3], 0, 4), // 21
197 QCELP_OF(cbgain[2], 0, 4), // 17
198 QCELP_OF(cbgain[1], 0, 4), // 13
199 QCELP_OF(cbgain[0], 0, 4), // 9
200 QCELP_OF(reserved, 0, 2), // 5
201 QCELP_OF(cbgain[4], 0, 4) // 3
205 * bitmap unpacking tables for RATE_OCTAVE
207 * trick: CBSEED is written into QCELPContext.cbsign[15],
208 * which is not used for RATE_OCTAVE.
209 * CBSEED is only used to ensure the occurrence of random bit
210 * patterns in the 16 first bits that are used as the seed.
212 * TIA/EIA/IS-733 Table 2.4.7.4-1
214 static const QCELPBitmap qcelp_rate_octave_bitmap[] = {
216 QCELP_OF(cbsign[15], 3, 1), // 19
217 QCELP_OF(lspv [0], 0, 1), // 18
218 QCELP_OF(lspv [1], 0, 1), // 17
219 QCELP_OF(lspv [2], 0, 1), // 16
220 QCELP_OF(cbsign[15], 2, 1), // 15
221 QCELP_OF(lspv [3], 0, 1), // 14
222 QCELP_OF(lspv [4], 0, 1), // 13
223 QCELP_OF(lspv [5], 0, 1), // 12
224 QCELP_OF(cbsign[15], 1, 1), // 11
225 QCELP_OF(lspv [6], 0, 1), // 10
226 QCELP_OF(lspv [7], 0, 1), // 9
227 QCELP_OF(lspv [8], 0, 1), // 8
228 QCELP_OF(cbsign[15], 0, 1), // 7
229 QCELP_OF(lspv [9], 0, 1), // 6
230 QCELP_OF(cbgain [0], 0, 2), // 7
231 QCELP_OF(reserved, 0, 4) // 3
235 * position of the bitmapping data for each packet type in
238 static const QCELPBitmap * const qcelp_unpacking_bitmaps_per_rate[5] = {
239 NULL, ///!< for SILENCE rate
240 qcelp_rate_octave_bitmap,
241 qcelp_rate_quarter_bitmap,
242 qcelp_rate_half_bitmap,
243 qcelp_rate_full_bitmap,
246 static const uint16_t qcelp_bits_per_rate[5] = {
247 0, ///!< for SILENCE rate
248 FF_ARRAY_ELEMS(qcelp_rate_octave_bitmap),
249 FF_ARRAY_ELEMS(qcelp_rate_quarter_bitmap),
250 FF_ARRAY_ELEMS(qcelp_rate_half_bitmap),
251 FF_ARRAY_ELEMS(qcelp_rate_full_bitmap),
255 typedef uint16_t qcelp_vector[2];
258 * LSP vector quantization tables in x*10000 form
260 * TIA/EIA/IS-733 tables 2.4.3.2.6.3-1 through 2.4.3.2.6.3-5
263 static const qcelp_vector qcelp_lspvq1[64]= {
264 { 327, 118},{ 919, 111},{ 427, 440},{1327, 185},
265 { 469, 50},{1272, 91},{ 892, 59},{1771, 193},
266 { 222, 158},{1100, 127},{ 827, 55},{ 978, 791},
267 { 665, 47},{ 700,1401},{ 670, 859},{1913,1048},
268 { 471, 215},{1046, 125},{ 645, 298},{1599, 160},
269 { 593, 39},{1187, 462},{ 749, 341},{1520, 511},
270 { 290, 792},{ 909, 362},{ 753, 81},{1111,1058},
271 { 519, 253},{ 828, 839},{ 685, 541},{1421,1258},
272 { 386, 130},{ 962, 119},{ 542, 387},{1431, 185},
273 { 526, 51},{1175, 260},{ 831, 167},{1728, 510},
274 { 273, 437},{1172, 113},{ 771, 144},{1122, 751},
275 { 619, 119},{ 492,1276},{ 658, 695},{1882, 615},
276 { 415, 200},{1018, 88},{ 681, 339},{1436, 325},
277 { 555, 122},{1042, 485},{ 826, 345},{1374, 743},
278 { 383,1018},{1005, 358},{ 704, 86},{1301, 586},
279 { 597, 241},{ 832, 621},{ 555, 573},{1504, 839}};
281 static const qcelp_vector qcelp_lspvq2[128]= {
282 { 255, 293},{ 904, 219},{ 151,1211},{1447, 498},
283 { 470, 253},{1559, 177},{1547, 994},{2394, 242},
284 { 91, 813},{ 857, 590},{ 934,1326},{1889, 282},
285 { 813, 472},{1057,1494},{ 450,3315},{2163,1895},
286 { 538, 532},{1399, 218},{ 146,1552},{1755, 626},
287 { 822, 202},{1299, 663},{ 706,1732},{2656, 401},
288 { 418, 745},{ 762,1038},{ 583,1748},{1746,1285},
289 { 527,1169},{1314, 830},{ 556,2116},{1073,2321},
290 { 297, 570},{ 981, 403},{ 468,1103},{1740, 243},
291 { 725, 179},{1255, 474},{1374,1362},{1922, 912},
292 { 285, 947},{ 930, 700},{ 593,1372},{1909, 576},
293 { 588, 916},{1110,1116},{ 224,2719},{1633,2220},
294 { 402, 520},{1061, 448},{ 402,1352},{1499, 775},
295 { 664, 589},{1081, 727},{ 801,2206},{2165,1157},
296 { 566, 802},{ 911,1116},{ 306,1703},{1792, 836},
297 { 655, 999},{1061,1038},{ 298,2089},{1110,1753},
298 { 361, 311},{ 970, 239},{ 265,1231},{1495, 573},
299 { 566, 262},{1569, 293},{1341,1144},{2271, 544},
300 { 214, 877},{ 847, 719},{ 794,1384},{2067, 274},
301 { 703, 688},{1099,1306},{ 391,2947},{2024,1670},
302 { 471, 525},{1245, 290},{ 264,1557},{1568, 807},
303 { 718, 399},{1193, 685},{ 883,1594},{2729, 764},
304 { 500, 754},{ 809,1108},{ 541,1648},{1523,1385},
305 { 614,1196},{1209, 847},{ 345,2242},{1442,1747},
306 { 199, 560},{1092, 194},{ 349,1253},{1653, 507},
307 { 625, 354},{1376, 431},{1187,1465},{2164, 872},
308 { 360, 974},{1008, 698},{ 704,1346},{2114, 452},
309 { 720, 816},{1240,1089},{ 439,2475},{1498,2040},
310 { 336, 718},{1213, 187},{ 451,1450},{1368, 885},
311 { 592, 578},{1131, 531},{ 861,1855},{1764,1500},
312 { 444, 970},{ 935, 903},{ 424,1687},{1633,1102},
313 { 793, 897},{1060, 897},{ 185,2011},{1205,1855}};
315 static const qcelp_vector qcelp_lspvq3[128]= {
316 { 225, 283},{1296, 355},{ 543, 343},{2073, 274},
317 { 204,1099},{1562, 523},{1388, 161},{2784, 274},
318 { 112, 849},{1870, 175},{1189, 160},{1490,1088},
319 { 969,1115},{ 659,3322},{1158,1073},{3183,1363},
320 { 517, 223},{1740, 223},{ 704, 387},{2637, 234},
321 { 692,1005},{1287,1610},{ 952, 532},{2393, 646},
322 { 490, 552},{1619, 657},{ 845, 670},{1784,2280},
323 { 191,1775},{ 272,2868},{ 942, 952},{2628,1479},
324 { 278, 579},{1565, 218},{ 814, 180},{2379, 187},
325 { 276,1444},{1199,1223},{1200, 349},{3009, 307},
326 { 312, 844},{1898, 306},{ 863, 470},{1685,1241},
327 { 513,1727},{ 711,2233},{1085, 864},{3398, 527},
328 { 414, 440},{1356, 612},{ 964, 147},{2173, 738},
329 { 465,1292},{ 877,1749},{1104, 689},{2105,1311},
330 { 580, 864},{1895, 752},{ 652, 609},{1485,1699},
331 { 514,1400},{ 386,2131},{ 933, 798},{2473, 986},
332 { 334, 360},{1375, 398},{ 621, 276},{2183, 280},
333 { 311,1114},{1382, 807},{1284, 175},{2605, 636},
334 { 230, 816},{1739, 408},{1074, 176},{1619,1120},
335 { 784,1371},{ 448,3050},{1189, 880},{3039,1165},
336 { 424, 241},{1672, 186},{ 815, 333},{2432, 324},
337 { 584,1029},{1137,1546},{1015, 585},{2198, 995},
338 { 574, 581},{1746, 647},{ 733, 740},{1938,1737},
339 { 347,1710},{ 373,2429},{ 787,1061},{2439,1438},
340 { 185, 536},{1489, 178},{ 703, 216},{2178, 487},
341 { 154,1421},{1414, 994},{1103, 352},{3072, 473},
342 { 408, 819},{2055, 168},{ 998, 354},{1917,1140},
343 { 665,1799},{ 993,2213},{1234, 631},{3003, 762},
344 { 373, 620},{1518, 425},{ 913, 300},{1966, 836},
345 { 402,1185},{ 948,1385},{1121, 555},{1802,1509},
346 { 474, 886},{1888, 610},{ 739, 585},{1231,2379},
347 { 661,1335},{ 205,2211},{ 823, 822},{2480,1179}};
349 static const qcelp_vector qcelp_lspvq4[64]= {
350 { 348, 311},{ 812,1145},{ 552, 461},{1826, 263},
351 { 601, 675},{1730, 172},{1523, 193},{2449, 277},
352 { 334, 668},{ 805,1441},{1319, 207},{1684, 910},
353 { 582,1318},{1403,1098},{ 979, 832},{2700,1359},
354 { 624, 228},{1292, 979},{ 800, 195},{2226, 285},
355 { 730, 862},{1537, 601},{1115, 509},{2720, 354},
356 { 218,1167},{1212,1538},{1074, 247},{1674,1710},
357 { 322,2142},{1263, 777},{ 981, 556},{2119,1710},
358 { 193, 596},{1035, 957},{ 694, 397},{1997, 253},
359 { 743, 603},{1584, 321},{1346, 346},{2221, 708},
360 { 451, 732},{1040,1415},{1184, 230},{1853, 919},
361 { 310,1661},{1625, 706},{ 856, 843},{2902, 702},
362 { 467, 348},{1108,1048},{ 859, 306},{1964, 463},
363 { 560,1013},{1425, 533},{1142, 634},{2391, 879},
364 { 397,1084},{1345,1700},{ 976, 248},{1887,1189},
365 { 644,2087},{1262, 603},{ 877, 550},{2203,1307}};
367 static const qcelp_vector qcelp_lspvq5[64]= {
368 { 360, 222},{ 820,1097},{ 601, 319},{1656, 198},
369 { 604, 513},{1552, 141},{1391, 155},{2474, 261},
370 { 269, 785},{1463, 646},{1123, 191},{2015, 223},
371 { 785, 844},{1202,1011},{ 980, 807},{3014, 793},
372 { 570, 180},{1135,1382},{ 778, 256},{1901, 179},
373 { 807, 622},{1461, 458},{1231, 178},{2028, 821},
374 { 387, 927},{1496,1004},{ 888, 392},{2246, 341},
375 { 295,1462},{1156, 694},{1022, 473},{2226,1364},
376 { 210, 478},{1029,1020},{ 722, 181},{1730, 251},
377 { 730, 488},{1465, 293},{1303, 326},{2595, 387},
378 { 458, 584},{1569, 742},{1029, 173},{1910, 495},
379 { 605,1159},{1268, 719},{ 973, 646},{2872, 428},
380 { 443, 334},{ 835,1465},{ 912, 138},{1716, 442},
381 { 620, 778},{1316, 450},{1186, 335},{1446,1665},
382 { 486,1050},{1675,1019},{ 880, 278},{2214, 202},
383 { 539,1564},{1142, 533},{ 984, 391},{2130,1089}};
385 static const qcelp_vector * const qcelp_lspvq[5] = {
394 * the final gain scalefactor before clipping into a usable output float
396 #define QCELP_SCALE 8192.
399 * the upper boundary of the clipping, depends on QCELP_SCALE
401 #define QCELP_CLIP_UPPER_BOUND (8191.75/8192.)
404 * the lower boundary of the clipping, depends on QCELP_SCALE
406 #define QCELP_CLIP_LOWER_BOUND -1.
409 * table for computing Ga (decoded linear codebook gain magnitude)
411 * @note The table could fit in int16_t in x*8 form, but it seems
412 * to be slower on x86
414 * TIA/EIA/IS-733 2.4.6.2.1-3
417 static const float qcelp_g12ga[61] = {
418 1.000/QCELP_SCALE, 1.125/QCELP_SCALE, 1.250/QCELP_SCALE, 1.375/QCELP_SCALE,
419 1.625/QCELP_SCALE, 1.750/QCELP_SCALE, 2.000/QCELP_SCALE, 2.250/QCELP_SCALE,
420 2.500/QCELP_SCALE, 2.875/QCELP_SCALE, 3.125/QCELP_SCALE, 3.500/QCELP_SCALE,
421 4.000/QCELP_SCALE, 4.500/QCELP_SCALE, 5.000/QCELP_SCALE, 5.625/QCELP_SCALE,
422 6.250/QCELP_SCALE, 7.125/QCELP_SCALE, 8.000/QCELP_SCALE, 8.875/QCELP_SCALE,
423 10.000/QCELP_SCALE, 11.250/QCELP_SCALE, 12.625/QCELP_SCALE, 14.125/QCELP_SCALE,
424 15.875/QCELP_SCALE, 17.750/QCELP_SCALE, 20.000/QCELP_SCALE, 22.375/QCELP_SCALE,
425 25.125/QCELP_SCALE, 28.125/QCELP_SCALE, 31.625/QCELP_SCALE, 35.500/QCELP_SCALE,
426 39.750/QCELP_SCALE, 44.625/QCELP_SCALE, 50.125/QCELP_SCALE, 56.250/QCELP_SCALE,
427 63.125/QCELP_SCALE, 70.750/QCELP_SCALE, 79.375/QCELP_SCALE, 89.125/QCELP_SCALE,
428 100.000/QCELP_SCALE, 112.250/QCELP_SCALE, 125.875/QCELP_SCALE, 141.250/QCELP_SCALE,
429 158.500/QCELP_SCALE, 177.875/QCELP_SCALE, 199.500/QCELP_SCALE, 223.875/QCELP_SCALE,
430 251.250/QCELP_SCALE, 281.875/QCELP_SCALE, 316.250/QCELP_SCALE, 354.875/QCELP_SCALE,
431 398.125/QCELP_SCALE, 446.625/QCELP_SCALE, 501.125/QCELP_SCALE, 562.375/QCELP_SCALE,
432 631.000/QCELP_SCALE, 708.000/QCELP_SCALE, 794.375/QCELP_SCALE, 891.250/QCELP_SCALE,
433 1000.000/QCELP_SCALE};
436 * circular codebook for rate 1 frames in x*100 form
438 * TIA/EIA/IS-733 2.4.6.1-2
440 static const int16_t qcelp_rate_full_codebook[128] = {
441 10, -65, -59, 12, 110, 34, -134, 157,
442 104, -84, -34, -115, 23, -101, 3, 45,
443 -101, -16, -59, 28, -45, 134, -67, 22,
444 61, -29, 226, -26, -55, -179, 157, -51,
445 -220, -93, -37, 60, 118, 74, -48, -95,
446 -181, 111, 36, -52, -215, 78, -112, 39,
447 -17, -47, -223, 19, 12, -98, -142, 130,
448 54, -127, 21, -12, 39, -48, 12, 128,
449 6, -167, 82, -102, -79, 55, -44, 48,
450 -20, -53, 8, -61, 11, -70, -157, -168,
451 20, -56, -74, 78, 33, -63, -173, -2,
452 -75, -53, -146, 77, 66, -29, 9, -75,
453 65, 119, -43, 76, 233, 98, 125, -156,
454 -27, 78, -9, 170, 176, 143, -148, -7,
455 27, -136, 5, 27, 18, 139, 204, 7,
456 -184, -197, 52, -3, 78, -189, 8, -65
458 #define QCELP_RATE_FULL_CODEBOOK_RATIO .01
461 * circular codebook for rate 1/2 frames in x*2 form
463 * TIA/EIA/IS-733 2.4.6.1-1
465 static const int8_t qcelp_rate_half_codebook[128] = {
466 0, -4, 0, -3, 0, 0, 0, 0,
467 0, 0, 0, 0, 0, 0, 0, 0,
468 0, -3, -2, 0, 0, 0, 0, 0,
469 0, 0, 0, 0, 0, 0, 0, 5,
470 0, 0, 0, 0, 0, 0, 4, 0,
471 0, 3, 2, 0, 3, 4, 0, 0,
472 0, 0, 0, 0, 0, 0, 0, 0,
473 0, 0, 0, 0, 0, 3, 0, 0,
474 -3, 3, 0, 0, -2, 0, 3, 0,
475 0, 0, 0, 0, 0, 0, -5, 0,
476 0, 0, 0, 3, 0, 0, 0, 3,
477 0, 0, 0, 0, 0, 0, 0, 4,
478 0, 0, 0, 0, 0, 0, 0, 0,
479 0, 3, 6, -3, -4, 0, -3, -3,
480 3, -3, 0, 0, 0, 0, 0, 0,
481 0, 0, 0, 0, 0, 0, 0, 0
483 #define QCELP_RATE_HALF_CODEBOOK_RATIO 0.5
486 * sqrt(1.887) is the maximum of the pseudorandom
487 * white sequence used to generate the scaled codebook
488 * vector for bitrate 1/4.
490 * TIA/EIA/IS-733 2.4.8.1.2
492 #define QCELP_SQRT1887 1.373681186
495 * table for impulse response of BPF used to filter
496 * the white excitation for bitrate 1/4 synthesis
498 * Only half the tables are needed because of symmetry.
500 * TIA/EIA/IS-733 2.4.8.1.2-1.1
502 static const double qcelp_rnd_fir_coefs[11] = {
503 -1.344519e-1, 1.735384e-2, -6.905826e-2, 2.434368e-2,
504 -8.210701e-2, 3.041388e-2, -9.251384e-2, 3.501983e-2,
505 -9.918777e-2, 3.749518e-2, 8.985137e-1
509 * This spread factor is used, for bitrate 1/8 and I_F_Q,
510 * to force the LSP frequencies to be at least 80 Hz apart.
512 * TIA/EIA/IS-733 2.4.3.3.2
514 #define QCELP_LSP_SPREAD_FACTOR 0.02
517 * predictor coefficient for the conversion of LSP codes
518 * to LSP frequencies for 1/8 and I_F_Q
520 * TIA/EIA/IS-733 2.4.3.2.7-2
522 #define QCELP_LSP_OCTAVE_PREDICTOR 29.0/32
524 #endif /* AVCODEC_QCELPDATA_H */