blob: 931c990b09d7fe09d03f07f5602dff76ef5ed980
1 | /* |
2 | * QCELP decoder |
3 | * Copyright (c) 2007 Reynaldo H. Verdejo Pinochet |
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_QCELPDATA_H |
23 | #define AVCODEC_QCELPDATA_H |
24 | |
25 | /** |
26 | * @file |
27 | * Data tables for the QCELP decoder |
28 | * @author Reynaldo H. Verdejo Pinochet |
29 | * @remark FFmpeg merging spearheaded by Kenan Gillet |
30 | * @remark Development mentored by Benjamin Larson |
31 | */ |
32 | |
33 | #include <stddef.h> |
34 | #include <stdint.h> |
35 | #include "libavutil/common.h" |
36 | |
37 | /** |
38 | * QCELP unpacked data frame |
39 | */ |
40 | typedef struct QCELPFrame { |
41 | /// @name QCELP excitation codebook parameters |
42 | /// @{ |
43 | uint8_t cbsign[16]; ///< sign of the codebook gain for each codebook subframe |
44 | uint8_t cbgain[16]; ///< unsigned codebook gain for each codebook subframe |
45 | uint8_t cindex[16]; ///< codebook index for each codebook subframe |
46 | /// @} |
47 | |
48 | /// @name QCELP pitch prediction parameters |
49 | /// @{ |
50 | uint8_t plag[4]; ///< pitch lag for each pitch subframe |
51 | uint8_t pfrac[4]; ///< fractional pitch lag for each pitch subframe |
52 | uint8_t pgain[4]; ///< pitch gain for each pitch subframe |
53 | /// @} |
54 | |
55 | /** |
56 | * line spectral pair frequencies (LSP) for RATE_OCTAVE, |
57 | * line spectral pair frequencies grouped into five vectors |
58 | * of dimension two (LSPV) for other rates |
59 | */ |
60 | uint8_t lspv[10]; |
61 | |
62 | /** |
63 | * reserved bits only present in bitrate 1, 1/4 and 1/8 packets |
64 | */ |
65 | uint8_t reserved; |
66 | } QCELPFrame; |
67 | |
68 | /** |
69 | * Pre-calculated table for hammsinc function. |
70 | * Only half of the table is needed because of symmetry. |
71 | * |
72 | * TIA/EIA/IS-733 2.4.5.2-2/3 |
73 | */ |
74 | static const float qcelp_hammsinc_table[4] = { -0.006822, 0.041249, -0.143459, 0.588863}; |
75 | |
76 | typedef struct QCELPBitmap { |
77 | uint8_t index; /**< index into the QCELPContext structure */ |
78 | uint8_t bitpos; /**< position of the lowest bit in the value's byte */ |
79 | uint8_t bitlen; /**< number of bits to read */ |
80 | } QCELPBitmap; |
81 | |
82 | #define QCELP_OF(variable, bit, len) {offsetof(QCELPFrame, variable), bit, len} |
83 | |
84 | /** |
85 | * Bitmap unpacking tables for RATE_FULL |
86 | * |
87 | * TIA/EIA/IS-733 Table 2.4.7.1-1 |
88 | */ |
89 | static const QCELPBitmap qcelp_rate_full_bitmap[] = { |
90 | // start on bit |
91 | QCELP_OF(lspv [ 2], 0, 3), // 265 |
92 | QCELP_OF(lspv [ 1], 0, 7), // 262 |
93 | QCELP_OF(lspv [ 0], 0, 6), // 255 |
94 | QCELP_OF(lspv [ 4], 0, 6), // 249 |
95 | QCELP_OF(lspv [ 3], 0, 6), // 243 |
96 | QCELP_OF(lspv [ 2], 3, 4), // 237 |
97 | QCELP_OF(cbsign[ 0], 0, 1), // 233 |
98 | QCELP_OF(cbgain[ 0], 0, 4), // 232 |
99 | QCELP_OF(pfrac [ 0], 0, 1), // 228 |
100 | QCELP_OF(plag [ 0], 0, 7), // 227 |
101 | QCELP_OF(pgain [ 0], 0, 3), // 220 |
102 | QCELP_OF(cindex[ 1], 0, 4), // 217 |
103 | QCELP_OF(cbsign[ 1], 0, 1), // 213 |
104 | QCELP_OF(cbgain[ 1], 0, 4), // 212 |
105 | QCELP_OF(cindex[ 0], 0, 7), // 208 |
106 | QCELP_OF(cbgain[ 3], 0, 1), // 201 |
107 | QCELP_OF(cindex[ 2], 0, 7), // 200 |
108 | QCELP_OF(cbsign[ 2], 0, 1), // 193 |
109 | QCELP_OF(cbgain[ 2], 0, 4), // 192 |
110 | QCELP_OF(cindex[ 1], 4, 3), // 188 |
111 | QCELP_OF(plag [ 1], 0, 3), // 185 |
112 | QCELP_OF(pgain [ 1], 0, 3), // 182 |
113 | QCELP_OF(cindex[ 3], 0, 7), // 179 |
114 | QCELP_OF(cbsign[ 3], 0, 1), // 172 |
115 | QCELP_OF(cbgain[ 3], 1, 2), // 171 |
116 | QCELP_OF(cindex[ 4], 0, 6), // 169 |
117 | QCELP_OF(cbsign[ 4], 0, 1), // 163 |
118 | QCELP_OF(cbgain[ 4], 0, 4), // 162 |
119 | QCELP_OF(pfrac [ 1], 0, 1), // 158 |
120 | QCELP_OF(plag [ 1], 3, 4), // 157 |
121 | QCELP_OF(cbgain[ 6], 0, 3), // 153 |
122 | QCELP_OF(cindex[ 5], 0, 7), // 150 |
123 | QCELP_OF(cbsign[ 5], 0, 1), // 143 |
124 | QCELP_OF(cbgain[ 5], 0, 4), // 142 |
125 | QCELP_OF(cindex[ 4], 6, 1), // 138 |
126 | QCELP_OF(cindex[ 7], 0, 3), // 137 |
127 | QCELP_OF(cbsign[ 7], 0, 1), // 134 |
128 | QCELP_OF(cbgain[ 7], 0, 3), // 133 |
129 | QCELP_OF(cindex[ 6], 0, 7), // 130 |
130 | QCELP_OF(cbsign[ 6], 0, 1), // 123 |
131 | QCELP_OF(cbgain[ 6], 3, 1), // 122 |
132 | QCELP_OF(cbgain[ 8], 0, 1), // 121 |
133 | QCELP_OF(pfrac [ 2], 0, 1), // 120 |
134 | QCELP_OF(plag [ 2], 0, 7), // 119 |
135 | QCELP_OF(pgain [ 2], 0, 3), // 112 |
136 | QCELP_OF(cindex[ 7], 3, 4), // 109 |
137 | QCELP_OF(cbsign[ 9], 0, 1), // 105 |
138 | QCELP_OF(cbgain[ 9], 0, 4), // 104 |
139 | QCELP_OF(cindex[ 8], 0, 7), // 100 |
140 | QCELP_OF(cbsign[ 8], 0, 1), // 93 |
141 | QCELP_OF(cbgain[ 8], 1, 3), // 92 |
142 | QCELP_OF(cindex[10], 0, 4), // 89 |
143 | QCELP_OF(cbsign[10], 0, 1), // 85 |
144 | QCELP_OF(cbgain[10], 0, 4), // 84 |
145 | QCELP_OF(cindex[ 9], 0, 7), // 80 |
146 | QCELP_OF(pgain [ 3], 0, 2), // 73 |
147 | QCELP_OF(cindex[11], 0, 7), // 71 |
148 | QCELP_OF(cbsign[11], 0, 1), // 64 |
149 | QCELP_OF(cbgain[11], 0, 3), // 63 |
150 | QCELP_OF(cindex[10], 4, 3), // 60 |
151 | QCELP_OF(cindex[12], 0, 2), // 57 |
152 | QCELP_OF(cbsign[12], 0, 1), // 55 |
153 | QCELP_OF(cbgain[12], 0, 4), // 54 |
154 | QCELP_OF(pfrac [ 3], 0, 1), // 50 |
155 | QCELP_OF(plag [ 3], 0, 7), // 49 |
156 | QCELP_OF(pgain [ 3], 2, 1), // 42 |
157 | QCELP_OF(cindex[13], 0, 6), // 41 |
158 | QCELP_OF(cbsign[13], 0, 1), // 35 |
159 | QCELP_OF(cbgain[13], 0, 4), // 34 |
160 | QCELP_OF(cindex[12], 2, 5), // 30 |
161 | QCELP_OF(cbgain[15], 0, 3), // 25 |
162 | QCELP_OF(cindex[14], 0, 7), // 22 |
163 | QCELP_OF(cbsign[14], 0, 1), // 15 |
164 | QCELP_OF(cbgain[14], 0, 4), // 14 |
165 | QCELP_OF(cindex[13], 6, 1), // 10 |
166 | QCELP_OF(reserved, 0, 2), // 9 |
167 | QCELP_OF(cindex[15], 0, 7), // 7 |
168 | QCELP_OF(cbsign[15], 0, 1) // 0 |
169 | }; |
170 | |
171 | /** |
172 | * Bitmap unpacking tables for RATE_HALF |
173 | * |
174 | * TIA/EIA/IS-733 Table 2.4.7.2-1 |
175 | */ |
176 | static const QCELPBitmap qcelp_rate_half_bitmap[] = { |
177 | // start on bit |
178 | QCELP_OF(lspv [2], 0, 3), // 123 |
179 | QCELP_OF(lspv [1], 0, 7), // 120 |
180 | QCELP_OF(lspv [0], 0, 6), // 113 |
181 | QCELP_OF(lspv [4], 0, 6), // 107 |
182 | QCELP_OF(lspv [3], 0, 6), // 101 |
183 | QCELP_OF(lspv [2], 3, 4), // 95 |
184 | QCELP_OF(cbsign[0], 0, 1), // 91 |
185 | QCELP_OF(cbgain[0], 0, 4), // 90 |
186 | QCELP_OF(pfrac [0], 0, 1), // 86 |
187 | QCELP_OF(plag [0], 0, 7), // 85 |
188 | QCELP_OF(pgain [0], 0, 3), // 78 |
189 | QCELP_OF(plag [1], 0, 6), // 75 |
190 | QCELP_OF(pgain [1], 0, 3), // 69 |
191 | QCELP_OF(cindex[0], 0, 7), // 66 |
192 | QCELP_OF(pgain [2], 0, 2), // 59 |
193 | QCELP_OF(cindex[1], 0, 7), // 57 |
194 | QCELP_OF(cbsign[1], 0, 1), // 50 |
195 | QCELP_OF(cbgain[1], 0, 4), // 49 |
196 | QCELP_OF(pfrac [1], 0, 1), // 45 |
197 | QCELP_OF(plag [1], 6, 1), // 44 |
198 | QCELP_OF(cindex[2], 0, 2), // 43 |
199 | QCELP_OF(cbsign[2], 0, 1), // 41 |
200 | QCELP_OF(cbgain[2], 0, 4), // 40 |
201 | QCELP_OF(pfrac [2], 0, 1), // 36 |
202 | QCELP_OF(plag [2], 0, 7), // 35 |
203 | QCELP_OF(pgain [2], 2, 1), // 28 |
204 | QCELP_OF(pfrac [3], 0, 1), // 27 |
205 | QCELP_OF(plag [3], 0, 7), // 26 |
206 | QCELP_OF(pgain [3], 0, 3), // 19 |
207 | QCELP_OF(cindex[2], 2, 5), // 16 |
208 | QCELP_OF(cindex[3], 0, 7), // 11 |
209 | QCELP_OF(cbsign[3], 0, 1), // 4 |
210 | QCELP_OF(cbgain[3], 0, 4) // 3 |
211 | }; |
212 | |
213 | /** |
214 | * Bitmap unpacking tables for RATE_QUARTER |
215 | * |
216 | * TIA/EIA/IS-733 Table 2.4.7.3-1 |
217 | */ |
218 | static const QCELPBitmap qcelp_rate_quarter_bitmap[] = { |
219 | // start on bit |
220 | QCELP_OF(lspv [2], 0, 3), // 53 |
221 | QCELP_OF(lspv [1], 0, 7), // 50 |
222 | QCELP_OF(lspv [0], 0, 6), // 43 |
223 | QCELP_OF(lspv [4], 0, 6), // 37 |
224 | QCELP_OF(lspv [3], 0, 6), // 31 |
225 | QCELP_OF(lspv [2], 3, 4), // 25 |
226 | QCELP_OF(cbgain[3], 0, 4), // 21 |
227 | QCELP_OF(cbgain[2], 0, 4), // 17 |
228 | QCELP_OF(cbgain[1], 0, 4), // 13 |
229 | QCELP_OF(cbgain[0], 0, 4), // 9 |
230 | QCELP_OF(reserved, 0, 2), // 5 |
231 | QCELP_OF(cbgain[4], 0, 4) // 3 |
232 | }; |
233 | |
234 | /** |
235 | * Bitmap unpacking tables for RATE_OCTAVE |
236 | * |
237 | * trick: CBSEED is written into QCELPContext.cbsign[15], |
238 | * which is not used for RATE_OCTAVE. |
239 | * CBSEED is only used to ensure the occurrence of random bit |
240 | * patterns in the 16 first bits that are used as the seed. |
241 | * |
242 | * TIA/EIA/IS-733 Table 2.4.7.4-1 |
243 | */ |
244 | static const QCELPBitmap qcelp_rate_octave_bitmap[] = { |
245 | // start on bit |
246 | QCELP_OF(cbsign[15], 3, 1), // 19 |
247 | QCELP_OF(lspv [0], 0, 1), // 18 |
248 | QCELP_OF(lspv [1], 0, 1), // 17 |
249 | QCELP_OF(lspv [2], 0, 1), // 16 |
250 | QCELP_OF(cbsign[15], 2, 1), // 15 |
251 | QCELP_OF(lspv [3], 0, 1), // 14 |
252 | QCELP_OF(lspv [4], 0, 1), // 13 |
253 | QCELP_OF(lspv [5], 0, 1), // 12 |
254 | QCELP_OF(cbsign[15], 1, 1), // 11 |
255 | QCELP_OF(lspv [6], 0, 1), // 10 |
256 | QCELP_OF(lspv [7], 0, 1), // 9 |
257 | QCELP_OF(lspv [8], 0, 1), // 8 |
258 | QCELP_OF(cbsign[15], 0, 1), // 7 |
259 | QCELP_OF(lspv [9], 0, 1), // 6 |
260 | QCELP_OF(cbgain [0], 0, 2), // 5 |
261 | QCELP_OF(reserved, 0, 4) // 3 |
262 | }; |
263 | |
264 | /** |
265 | * Bitmapping data position for each packet type in |
266 | * the QCELPContext |
267 | */ |
268 | static const QCELPBitmap * const qcelp_unpacking_bitmaps_per_rate[5] = { |
269 | NULL, ///< for SILENCE rate |
270 | qcelp_rate_octave_bitmap, |
271 | qcelp_rate_quarter_bitmap, |
272 | qcelp_rate_half_bitmap, |
273 | qcelp_rate_full_bitmap, |
274 | }; |
275 | |
276 | static const uint16_t qcelp_unpacking_bitmaps_lengths[5] = { |
277 | 0, ///< for SILENCE rate |
278 | FF_ARRAY_ELEMS(qcelp_rate_octave_bitmap), |
279 | FF_ARRAY_ELEMS(qcelp_rate_quarter_bitmap), |
280 | FF_ARRAY_ELEMS(qcelp_rate_half_bitmap), |
281 | FF_ARRAY_ELEMS(qcelp_rate_full_bitmap), |
282 | }; |
283 | |
284 | typedef uint16_t qcelp_vector[2]; |
285 | |
286 | /** |
287 | * LSP vector quantization tables in x*10000 form |
288 | * |
289 | * TIA/EIA/IS-733 tables 2.4.3.2.6.3-1 through 2.4.3.2.6.3-5 |
290 | */ |
291 | |
292 | static const qcelp_vector qcelp_lspvq1[64]= { |
293 | { 327, 118},{ 919, 111},{ 427, 440},{1327, 185}, |
294 | { 469, 50},{1272, 91},{ 892, 59},{1771, 193}, |
295 | { 222, 158},{1100, 127},{ 827, 55},{ 978, 791}, |
296 | { 665, 47},{ 700,1401},{ 670, 859},{1913,1048}, |
297 | { 471, 215},{1046, 125},{ 645, 298},{1599, 160}, |
298 | { 593, 39},{1187, 462},{ 749, 341},{1520, 511}, |
299 | { 290, 792},{ 909, 362},{ 753, 81},{1111,1058}, |
300 | { 519, 253},{ 828, 839},{ 685, 541},{1421,1258}, |
301 | { 386, 130},{ 962, 119},{ 542, 387},{1431, 185}, |
302 | { 526, 51},{1175, 260},{ 831, 167},{1728, 510}, |
303 | { 273, 437},{1172, 113},{ 771, 144},{1122, 751}, |
304 | { 619, 119},{ 492,1276},{ 658, 695},{1882, 615}, |
305 | { 415, 200},{1018, 88},{ 681, 339},{1436, 325}, |
306 | { 555, 122},{1042, 485},{ 826, 345},{1374, 743}, |
307 | { 383,1018},{1005, 358},{ 704, 86},{1301, 586}, |
308 | { 597, 241},{ 832, 621},{ 555, 573},{1504, 839}}; |
309 | |
310 | static const qcelp_vector qcelp_lspvq2[128]= { |
311 | { 255, 293},{ 904, 219},{ 151,1211},{1447, 498}, |
312 | { 470, 253},{1559, 177},{1547, 994},{2394, 242}, |
313 | { 91, 813},{ 857, 590},{ 934,1326},{1889, 282}, |
314 | { 813, 472},{1057,1494},{ 450,3315},{2163,1895}, |
315 | { 538, 532},{1399, 218},{ 146,1552},{1755, 626}, |
316 | { 822, 202},{1299, 663},{ 706,1732},{2656, 401}, |
317 | { 418, 745},{ 762,1038},{ 583,1748},{1746,1285}, |
318 | { 527,1169},{1314, 830},{ 556,2116},{1073,2321}, |
319 | { 297, 570},{ 981, 403},{ 468,1103},{1740, 243}, |
320 | { 725, 179},{1255, 474},{1374,1362},{1922, 912}, |
321 | { 285, 947},{ 930, 700},{ 593,1372},{1909, 576}, |
322 | { 588, 916},{1110,1116},{ 224,2719},{1633,2220}, |
323 | { 402, 520},{1061, 448},{ 402,1352},{1499, 775}, |
324 | { 664, 589},{1081, 727},{ 801,2206},{2165,1157}, |
325 | { 566, 802},{ 911,1116},{ 306,1703},{1792, 836}, |
326 | { 655, 999},{1061,1038},{ 298,2089},{1110,1753}, |
327 | { 361, 311},{ 970, 239},{ 265,1231},{1495, 573}, |
328 | { 566, 262},{1569, 293},{1341,1144},{2271, 544}, |
329 | { 214, 877},{ 847, 719},{ 794,1384},{2067, 274}, |
330 | { 703, 688},{1099,1306},{ 391,2947},{2024,1670}, |
331 | { 471, 525},{1245, 290},{ 264,1557},{1568, 807}, |
332 | { 718, 399},{1193, 685},{ 883,1594},{2729, 764}, |
333 | { 500, 754},{ 809,1108},{ 541,1648},{1523,1385}, |
334 | { 614,1196},{1209, 847},{ 345,2242},{1442,1747}, |
335 | { 199, 560},{1092, 194},{ 349,1253},{1653, 507}, |
336 | { 625, 354},{1376, 431},{1187,1465},{2164, 872}, |
337 | { 360, 974},{1008, 698},{ 704,1346},{2114, 452}, |
338 | { 720, 816},{1240,1089},{ 439,2475},{1498,2040}, |
339 | { 336, 718},{1213, 187},{ 451,1450},{1368, 885}, |
340 | { 592, 578},{1131, 531},{ 861,1855},{1764,1500}, |
341 | { 444, 970},{ 935, 903},{ 424,1687},{1633,1102}, |
342 | { 793, 897},{1060, 897},{ 185,2011},{1205,1855}}; |
343 | |
344 | static const qcelp_vector qcelp_lspvq3[128]= { |
345 | { 225, 283},{1296, 355},{ 543, 343},{2073, 274}, |
346 | { 204,1099},{1562, 523},{1388, 161},{2784, 274}, |
347 | { 112, 849},{1870, 175},{1189, 160},{1490,1088}, |
348 | { 969,1115},{ 659,3322},{1158,1073},{3183,1363}, |
349 | { 517, 223},{1740, 223},{ 704, 387},{2637, 234}, |
350 | { 692,1005},{1287,1610},{ 952, 532},{2393, 646}, |
351 | { 490, 552},{1619, 657},{ 845, 670},{1784,2280}, |
352 | { 191,1775},{ 272,2868},{ 942, 952},{2628,1479}, |
353 | { 278, 579},{1565, 218},{ 814, 180},{2379, 187}, |
354 | { 276,1444},{1199,1223},{1200, 349},{3009, 307}, |
355 | { 312, 844},{1898, 306},{ 863, 470},{1685,1241}, |
356 | { 513,1727},{ 711,2233},{1085, 864},{3398, 527}, |
357 | { 414, 440},{1356, 612},{ 964, 147},{2173, 738}, |
358 | { 465,1292},{ 877,1749},{1104, 689},{2105,1311}, |
359 | { 580, 864},{1895, 752},{ 652, 609},{1485,1699}, |
360 | { 514,1400},{ 386,2131},{ 933, 798},{2473, 986}, |
361 | { 334, 360},{1375, 398},{ 621, 276},{2183, 280}, |
362 | { 311,1114},{1382, 807},{1284, 175},{2605, 636}, |
363 | { 230, 816},{1739, 408},{1074, 176},{1619,1120}, |
364 | { 784,1371},{ 448,3050},{1189, 880},{3039,1165}, |
365 | { 424, 241},{1672, 186},{ 815, 333},{2432, 324}, |
366 | { 584,1029},{1137,1546},{1015, 585},{2198, 995}, |
367 | { 574, 581},{1746, 647},{ 733, 740},{1938,1737}, |
368 | { 347,1710},{ 373,2429},{ 787,1061},{2439,1438}, |
369 | { 185, 536},{1489, 178},{ 703, 216},{2178, 487}, |
370 | { 154,1421},{1414, 994},{1103, 352},{3072, 473}, |
371 | { 408, 819},{2055, 168},{ 998, 354},{1917,1140}, |
372 | { 665,1799},{ 993,2213},{1234, 631},{3003, 762}, |
373 | { 373, 620},{1518, 425},{ 913, 300},{1966, 836}, |
374 | { 402,1185},{ 948,1385},{1121, 555},{1802,1509}, |
375 | { 474, 886},{1888, 610},{ 739, 585},{1231,2379}, |
376 | { 661,1335},{ 205,2211},{ 823, 822},{2480,1179}}; |
377 | |
378 | static const qcelp_vector qcelp_lspvq4[64]= { |
379 | { 348, 311},{ 812,1145},{ 552, 461},{1826, 263}, |
380 | { 601, 675},{1730, 172},{1523, 193},{2449, 277}, |
381 | { 334, 668},{ 805,1441},{1319, 207},{1684, 910}, |
382 | { 582,1318},{1403,1098},{ 979, 832},{2700,1359}, |
383 | { 624, 228},{1292, 979},{ 800, 195},{2226, 285}, |
384 | { 730, 862},{1537, 601},{1115, 509},{2720, 354}, |
385 | { 218,1167},{1212,1538},{1074, 247},{1674,1710}, |
386 | { 322,2142},{1263, 777},{ 981, 556},{2119,1710}, |
387 | { 193, 596},{1035, 957},{ 694, 397},{1997, 253}, |
388 | { 743, 603},{1584, 321},{1346, 346},{2221, 708}, |
389 | { 451, 732},{1040,1415},{1184, 230},{1853, 919}, |
390 | { 310,1661},{1625, 706},{ 856, 843},{2902, 702}, |
391 | { 467, 348},{1108,1048},{ 859, 306},{1964, 463}, |
392 | { 560,1013},{1425, 533},{1142, 634},{2391, 879}, |
393 | { 397,1084},{1345,1700},{ 976, 248},{1887,1189}, |
394 | { 644,2087},{1262, 603},{ 877, 550},{2203,1307}}; |
395 | |
396 | static const qcelp_vector qcelp_lspvq5[64]= { |
397 | { 360, 222},{ 820,1097},{ 601, 319},{1656, 198}, |
398 | { 604, 513},{1552, 141},{1391, 155},{2474, 261}, |
399 | { 269, 785},{1463, 646},{1123, 191},{2015, 223}, |
400 | { 785, 844},{1202,1011},{ 980, 807},{3014, 793}, |
401 | { 570, 180},{1135,1382},{ 778, 256},{1901, 179}, |
402 | { 807, 622},{1461, 458},{1231, 178},{2028, 821}, |
403 | { 387, 927},{1496,1004},{ 888, 392},{2246, 341}, |
404 | { 295,1462},{1156, 694},{1022, 473},{2226,1364}, |
405 | { 210, 478},{1029,1020},{ 722, 181},{1730, 251}, |
406 | { 730, 488},{1465, 293},{1303, 326},{2595, 387}, |
407 | { 458, 584},{1569, 742},{1029, 173},{1910, 495}, |
408 | { 605,1159},{1268, 719},{ 973, 646},{2872, 428}, |
409 | { 443, 334},{ 835,1465},{ 912, 138},{1716, 442}, |
410 | { 620, 778},{1316, 450},{1186, 335},{1446,1665}, |
411 | { 486,1050},{1675,1019},{ 880, 278},{2214, 202}, |
412 | { 539,1564},{1142, 533},{ 984, 391},{2130,1089}}; |
413 | |
414 | static const qcelp_vector * const qcelp_lspvq[5] = { |
415 | qcelp_lspvq1, |
416 | qcelp_lspvq2, |
417 | qcelp_lspvq3, |
418 | qcelp_lspvq4, |
419 | qcelp_lspvq5 |
420 | }; |
421 | |
422 | /** |
423 | * The final gain scalefactor before clipping into a usable output float |
424 | */ |
425 | #define QCELP_SCALE 8192. |
426 | |
427 | /** |
428 | * Table for computing Ga (decoded linear codebook gain magnitude) |
429 | * |
430 | * @note The table could fit in int16_t in x*8 form, but it seems |
431 | * to be slower on x86 |
432 | * |
433 | * TIA/EIA/IS-733 2.4.6.2.1-3 |
434 | */ |
435 | |
436 | static const float qcelp_g12ga[61] = { |
437 | 1.000/QCELP_SCALE, 1.125/QCELP_SCALE, 1.250/QCELP_SCALE, 1.375/QCELP_SCALE, |
438 | 1.625/QCELP_SCALE, 1.750/QCELP_SCALE, 2.000/QCELP_SCALE, 2.250/QCELP_SCALE, |
439 | 2.500/QCELP_SCALE, 2.875/QCELP_SCALE, 3.125/QCELP_SCALE, 3.500/QCELP_SCALE, |
440 | 4.000/QCELP_SCALE, 4.500/QCELP_SCALE, 5.000/QCELP_SCALE, 5.625/QCELP_SCALE, |
441 | 6.250/QCELP_SCALE, 7.125/QCELP_SCALE, 8.000/QCELP_SCALE, 8.875/QCELP_SCALE, |
442 | 10.000/QCELP_SCALE, 11.250/QCELP_SCALE, 12.625/QCELP_SCALE, 14.125/QCELP_SCALE, |
443 | 15.875/QCELP_SCALE, 17.750/QCELP_SCALE, 20.000/QCELP_SCALE, 22.375/QCELP_SCALE, |
444 | 25.125/QCELP_SCALE, 28.125/QCELP_SCALE, 31.625/QCELP_SCALE, 35.500/QCELP_SCALE, |
445 | 39.750/QCELP_SCALE, 44.625/QCELP_SCALE, 50.125/QCELP_SCALE, 56.250/QCELP_SCALE, |
446 | 63.125/QCELP_SCALE, 70.750/QCELP_SCALE, 79.375/QCELP_SCALE, 89.125/QCELP_SCALE, |
447 | 100.000/QCELP_SCALE, 112.250/QCELP_SCALE, 125.875/QCELP_SCALE, 141.250/QCELP_SCALE, |
448 | 158.500/QCELP_SCALE, 177.875/QCELP_SCALE, 199.500/QCELP_SCALE, 223.875/QCELP_SCALE, |
449 | 251.250/QCELP_SCALE, 281.875/QCELP_SCALE, 316.250/QCELP_SCALE, 354.875/QCELP_SCALE, |
450 | 398.125/QCELP_SCALE, 446.625/QCELP_SCALE, 501.125/QCELP_SCALE, 562.375/QCELP_SCALE, |
451 | 631.000/QCELP_SCALE, 708.000/QCELP_SCALE, 794.375/QCELP_SCALE, 891.250/QCELP_SCALE, |
452 | 1000.000/QCELP_SCALE}; |
453 | |
454 | /** |
455 | * Circular codebook for rate 1 frames in x*100 form |
456 | * |
457 | * TIA/EIA/IS-733 2.4.6.1-2 |
458 | */ |
459 | static const int16_t qcelp_rate_full_codebook[128] = { |
460 | 10, -65, -59, 12, 110, 34, -134, 157, |
461 | 104, -84, -34, -115, 23, -101, 3, 45, |
462 | -101, -16, -59, 28, -45, 134, -67, 22, |
463 | 61, -29, 226, -26, -55, -179, 157, -51, |
464 | -220, -93, -37, 60, 118, 74, -48, -95, |
465 | -181, 111, 36, -52, -215, 78, -112, 39, |
466 | -17, -47, -223, 19, 12, -98, -142, 130, |
467 | 54, -127, 21, -12, 39, -48, 12, 128, |
468 | 6, -167, 82, -102, -79, 55, -44, 48, |
469 | -20, -53, 8, -61, 11, -70, -157, -168, |
470 | 20, -56, -74, 78, 33, -63, -173, -2, |
471 | -75, -53, -146, 77, 66, -29, 9, -75, |
472 | 65, 119, -43, 76, 233, 98, 125, -156, |
473 | -27, 78, -9, 170, 176, 143, -148, -7, |
474 | 27, -136, 5, 27, 18, 139, 204, 7, |
475 | -184, -197, 52, -3, 78, -189, 8, -65 |
476 | }; |
477 | #define QCELP_RATE_FULL_CODEBOOK_RATIO .01 |
478 | |
479 | /** |
480 | * Circular codebook for rate 1/2 frames in x*2 form |
481 | * |
482 | * TIA/EIA/IS-733 2.4.6.1-1 |
483 | */ |
484 | static const int8_t qcelp_rate_half_codebook[128] = { |
485 | 0, -4, 0, -3, 0, 0, 0, 0, |
486 | 0, 0, 0, 0, 0, 0, 0, 0, |
487 | 0, -3, -2, 0, 0, 0, 0, 0, |
488 | 0, 0, 0, 0, 0, 0, 0, 5, |
489 | 0, 0, 0, 0, 0, 0, 4, 0, |
490 | 0, 3, 2, 0, 3, 4, 0, 0, |
491 | 0, 0, 0, 0, 0, 0, 0, 0, |
492 | 0, 0, 0, 0, 0, 3, 0, 0, |
493 | -3, 3, 0, 0, -2, 0, 3, 0, |
494 | 0, 0, 0, 0, 0, 0, -5, 0, |
495 | 0, 0, 0, 3, 0, 0, 0, 3, |
496 | 0, 0, 0, 0, 0, 0, 0, 4, |
497 | 0, 0, 0, 0, 0, 0, 0, 0, |
498 | 0, 3, 6, -3, -4, 0, -3, -3, |
499 | 3, -3, 0, 0, 0, 0, 0, 0, |
500 | 0, 0, 0, 0, 0, 0, 0, 0 |
501 | }; |
502 | #define QCELP_RATE_HALF_CODEBOOK_RATIO 0.5 |
503 | |
504 | /** |
505 | * sqrt(1.887) is the maximum of the pseudorandom |
506 | * white sequence used to generate the scaled codebook |
507 | * vector for bitrate 1/4. |
508 | * |
509 | * TIA/EIA/IS-733 2.4.8.1.2 |
510 | */ |
511 | #define QCELP_SQRT1887 1.373681186 |
512 | |
513 | /** |
514 | * Table for impulse response of BPF used to filter |
515 | * the white excitation for bitrate 1/4 synthesis |
516 | * |
517 | * Only half the tables are needed because of symmetry. |
518 | * |
519 | * TIA/EIA/IS-733 2.4.8.1.2-1.1 |
520 | */ |
521 | static const double qcelp_rnd_fir_coefs[11] = { |
522 | -1.344519e-1, 1.735384e-2, -6.905826e-2, 2.434368e-2, |
523 | -8.210701e-2, 3.041388e-2, -9.251384e-2, 3.501983e-2, |
524 | -9.918777e-2, 3.749518e-2, 8.985137e-1 |
525 | }; |
526 | |
527 | /** |
528 | * This spread factor is used, for bitrate 1/8 and I_F_Q, |
529 | * to force LSP frequencies to be at least 80 Hz apart. |
530 | * |
531 | * TIA/EIA/IS-733 2.4.3.3.2 |
532 | */ |
533 | #define QCELP_LSP_SPREAD_FACTOR 0.02 |
534 | |
535 | /** |
536 | * Predictor coefficient for the conversion of LSP codes |
537 | * to LSP frequencies for 1/8 and I_F_Q |
538 | * |
539 | * TIA/EIA/IS-733 2.4.3.2.7-2 |
540 | */ |
541 | #define QCELP_LSP_OCTAVE_PREDICTOR 29.0/32 |
542 | |
543 | /** |
544 | * Initial coefficient to perform bandwidth expansion on LPC |
545 | * |
546 | * @note: 0.9883 looks like an approximation of 253/256. |
547 | * |
548 | * TIA/EIA/IS-733 2.4.3.3.6 6 |
549 | */ |
550 | #define QCELP_BANDWIDTH_EXPANSION_COEFF 0.9883 |
551 | |
552 | #endif /* AVCODEC_QCELPDATA_H */ |
553 |