aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/qcelpdata.h
blob: 931c990b09d7fe09d03f07f5602dff76ef5ed980 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
/*
 * QCELP decoder
 * Copyright (c) 2007 Reynaldo H. Verdejo Pinochet
 *
 * 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_QCELPDATA_H
#define AVCODEC_QCELPDATA_H

/**
 * @file
 * Data tables for the QCELP decoder
 * @author Reynaldo H. Verdejo Pinochet
 * @remark FFmpeg merging spearheaded by Kenan Gillet
 * @remark Development mentored by Benjamin Larson
 */

#include <stddef.h>
#include <stdint.h>
#include "libavutil/common.h"

/**
 * QCELP unpacked data frame
 */
typedef struct QCELPFrame {
/// @name QCELP excitation codebook parameters
/// @{
    uint8_t cbsign[16]; ///< sign of the codebook gain for each codebook subframe
    uint8_t cbgain[16]; ///< unsigned codebook gain for each codebook subframe
    uint8_t cindex[16]; ///< codebook index for each codebook subframe
/// @}

/// @name QCELP pitch prediction parameters
/// @{
    uint8_t plag[4];    ///< pitch lag for each pitch subframe
    uint8_t pfrac[4];   ///< fractional pitch lag for each pitch subframe
    uint8_t pgain[4];   ///< pitch gain for each pitch subframe
/// @}

    /**
     * line spectral pair frequencies (LSP) for RATE_OCTAVE,
     * line spectral pair frequencies grouped into five vectors
     * of dimension two (LSPV) for other rates
     */
    uint8_t lspv[10];

    /**
     * reserved bits only present in bitrate 1, 1/4 and 1/8 packets
     */
    uint8_t reserved;
} QCELPFrame;

/**
 * Pre-calculated table for hammsinc function.
 * Only half of the table is needed because of symmetry.
 *
 * TIA/EIA/IS-733 2.4.5.2-2/3
 */
static const float qcelp_hammsinc_table[4] = { -0.006822,  0.041249, -0.143459,  0.588863};

typedef struct QCELPBitmap {
    uint8_t index;  /**< index into the QCELPContext structure */
    uint8_t bitpos; /**< position of the lowest bit in the value's byte */
    uint8_t bitlen; /**< number of bits to read */
} QCELPBitmap;

#define QCELP_OF(variable, bit, len) {offsetof(QCELPFrame, variable), bit, len}

/**
 * Bitmap unpacking tables for RATE_FULL
 *
 * TIA/EIA/IS-733 Table 2.4.7.1-1
 */
static const QCELPBitmap qcelp_rate_full_bitmap[] = {
                                // start on bit
    QCELP_OF(lspv  [ 2], 0, 3), // 265
    QCELP_OF(lspv  [ 1], 0, 7), // 262
    QCELP_OF(lspv  [ 0], 0, 6), // 255
    QCELP_OF(lspv  [ 4], 0, 6), // 249
    QCELP_OF(lspv  [ 3], 0, 6), // 243
    QCELP_OF(lspv  [ 2], 3, 4), // 237
    QCELP_OF(cbsign[ 0], 0, 1), // 233
    QCELP_OF(cbgain[ 0], 0, 4), // 232
    QCELP_OF(pfrac [ 0], 0, 1), // 228
    QCELP_OF(plag  [ 0], 0, 7), // 227
    QCELP_OF(pgain [ 0], 0, 3), // 220
    QCELP_OF(cindex[ 1], 0, 4), // 217
    QCELP_OF(cbsign[ 1], 0, 1), // 213
    QCELP_OF(cbgain[ 1], 0, 4), // 212
    QCELP_OF(cindex[ 0], 0, 7), // 208
    QCELP_OF(cbgain[ 3], 0, 1), // 201
    QCELP_OF(cindex[ 2], 0, 7), // 200
    QCELP_OF(cbsign[ 2], 0, 1), // 193
    QCELP_OF(cbgain[ 2], 0, 4), // 192
    QCELP_OF(cindex[ 1], 4, 3), // 188
    QCELP_OF(plag  [ 1], 0, 3), // 185
    QCELP_OF(pgain [ 1], 0, 3), // 182
    QCELP_OF(cindex[ 3], 0, 7), // 179
    QCELP_OF(cbsign[ 3], 0, 1), // 172
    QCELP_OF(cbgain[ 3], 1, 2), // 171
    QCELP_OF(cindex[ 4], 0, 6), // 169
    QCELP_OF(cbsign[ 4], 0, 1), // 163
    QCELP_OF(cbgain[ 4], 0, 4), // 162
    QCELP_OF(pfrac [ 1], 0, 1), // 158
    QCELP_OF(plag  [ 1], 3, 4), // 157
    QCELP_OF(cbgain[ 6], 0, 3), // 153
    QCELP_OF(cindex[ 5], 0, 7), // 150
    QCELP_OF(cbsign[ 5], 0, 1), // 143
    QCELP_OF(cbgain[ 5], 0, 4), // 142
    QCELP_OF(cindex[ 4], 6, 1), // 138
    QCELP_OF(cindex[ 7], 0, 3), // 137
    QCELP_OF(cbsign[ 7], 0, 1), // 134
    QCELP_OF(cbgain[ 7], 0, 3), // 133
    QCELP_OF(cindex[ 6], 0, 7), // 130
    QCELP_OF(cbsign[ 6], 0, 1), // 123
    QCELP_OF(cbgain[ 6], 3, 1), // 122
    QCELP_OF(cbgain[ 8], 0, 1), // 121
    QCELP_OF(pfrac [ 2], 0, 1), // 120
    QCELP_OF(plag  [ 2], 0, 7), // 119
    QCELP_OF(pgain [ 2], 0, 3), // 112
    QCELP_OF(cindex[ 7], 3, 4), // 109
    QCELP_OF(cbsign[ 9], 0, 1), // 105
    QCELP_OF(cbgain[ 9], 0, 4), // 104
    QCELP_OF(cindex[ 8], 0, 7), // 100
    QCELP_OF(cbsign[ 8], 0, 1), //  93
    QCELP_OF(cbgain[ 8], 1, 3), //  92
    QCELP_OF(cindex[10], 0, 4), //  89
    QCELP_OF(cbsign[10], 0, 1), //  85
    QCELP_OF(cbgain[10], 0, 4), //  84
    QCELP_OF(cindex[ 9], 0, 7), //  80
    QCELP_OF(pgain [ 3], 0, 2), //  73
    QCELP_OF(cindex[11], 0, 7), //  71
    QCELP_OF(cbsign[11], 0, 1), //  64
    QCELP_OF(cbgain[11], 0, 3), //  63
    QCELP_OF(cindex[10], 4, 3), //  60
    QCELP_OF(cindex[12], 0, 2), //  57
    QCELP_OF(cbsign[12], 0, 1), //  55
    QCELP_OF(cbgain[12], 0, 4), //  54
    QCELP_OF(pfrac [ 3], 0, 1), //  50
    QCELP_OF(plag  [ 3], 0, 7), //  49
    QCELP_OF(pgain [ 3], 2, 1), //  42
    QCELP_OF(cindex[13], 0, 6), //  41
    QCELP_OF(cbsign[13], 0, 1), //  35
    QCELP_OF(cbgain[13], 0, 4), //  34
    QCELP_OF(cindex[12], 2, 5), //  30
    QCELP_OF(cbgain[15], 0, 3), //  25
    QCELP_OF(cindex[14], 0, 7), //  22
    QCELP_OF(cbsign[14], 0, 1), //  15
    QCELP_OF(cbgain[14], 0, 4), //  14
    QCELP_OF(cindex[13], 6, 1), //  10
    QCELP_OF(reserved,   0, 2), //   9
    QCELP_OF(cindex[15], 0, 7), //   7
    QCELP_OF(cbsign[15], 0, 1)  //   0
};

/**
 * Bitmap unpacking tables for RATE_HALF
 *
 * TIA/EIA/IS-733 Table 2.4.7.2-1
 */
static const QCELPBitmap qcelp_rate_half_bitmap[] = {
                               // start on bit
    QCELP_OF(lspv  [2], 0, 3), // 123
    QCELP_OF(lspv  [1], 0, 7), // 120
    QCELP_OF(lspv  [0], 0, 6), // 113
    QCELP_OF(lspv  [4], 0, 6), // 107
    QCELP_OF(lspv  [3], 0, 6), // 101
    QCELP_OF(lspv  [2], 3, 4), //  95
    QCELP_OF(cbsign[0], 0, 1), //  91
    QCELP_OF(cbgain[0], 0, 4), //  90
    QCELP_OF(pfrac [0], 0, 1), //  86
    QCELP_OF(plag  [0], 0, 7), //  85
    QCELP_OF(pgain [0], 0, 3), //  78
    QCELP_OF(plag  [1], 0, 6), //  75
    QCELP_OF(pgain [1], 0, 3), //  69
    QCELP_OF(cindex[0], 0, 7), //  66
    QCELP_OF(pgain [2], 0, 2), //  59
    QCELP_OF(cindex[1], 0, 7), //  57
    QCELP_OF(cbsign[1], 0, 1), //  50
    QCELP_OF(cbgain[1], 0, 4), //  49
    QCELP_OF(pfrac [1], 0, 1), //  45
    QCELP_OF(plag  [1], 6, 1), //  44
    QCELP_OF(cindex[2], 0, 2), //  43
    QCELP_OF(cbsign[2], 0, 1), //  41
    QCELP_OF(cbgain[2], 0, 4), //  40
    QCELP_OF(pfrac [2], 0, 1), //  36
    QCELP_OF(plag  [2], 0, 7), //  35
    QCELP_OF(pgain [2], 2, 1), //  28
    QCELP_OF(pfrac [3], 0, 1), //  27
    QCELP_OF(plag  [3], 0, 7), //  26
    QCELP_OF(pgain [3], 0, 3), //  19
    QCELP_OF(cindex[2], 2, 5), //  16
    QCELP_OF(cindex[3], 0, 7), //  11
    QCELP_OF(cbsign[3], 0, 1), //   4
    QCELP_OF(cbgain[3], 0, 4)  //   3
};

/**
 * Bitmap unpacking tables for RATE_QUARTER
 *
 * TIA/EIA/IS-733 Table 2.4.7.3-1
 */
static const QCELPBitmap qcelp_rate_quarter_bitmap[] = {
                               // start on bit
    QCELP_OF(lspv  [2], 0, 3), // 53
    QCELP_OF(lspv  [1], 0, 7), // 50
    QCELP_OF(lspv  [0], 0, 6), // 43
    QCELP_OF(lspv  [4], 0, 6), // 37
    QCELP_OF(lspv  [3], 0, 6), // 31
    QCELP_OF(lspv  [2], 3, 4), // 25
    QCELP_OF(cbgain[3], 0, 4), // 21
    QCELP_OF(cbgain[2], 0, 4), // 17
    QCELP_OF(cbgain[1], 0, 4), // 13
    QCELP_OF(cbgain[0], 0, 4), //  9
    QCELP_OF(reserved,  0, 2), //  5
    QCELP_OF(cbgain[4], 0, 4)  //  3
};

/**
 * Bitmap unpacking tables for RATE_OCTAVE
 *
 * trick: CBSEED is written into QCELPContext.cbsign[15],
 * which is not used for RATE_OCTAVE.
 * CBSEED is only used to ensure the occurrence of random bit
 * patterns in the 16 first bits that are used as the seed.
 *
 * TIA/EIA/IS-733 Table 2.4.7.4-1
 */
static const QCELPBitmap qcelp_rate_octave_bitmap[] = {
                                // start on bit
    QCELP_OF(cbsign[15], 3, 1), // 19
    QCELP_OF(lspv   [0], 0, 1), // 18
    QCELP_OF(lspv   [1], 0, 1), // 17
    QCELP_OF(lspv   [2], 0, 1), // 16
    QCELP_OF(cbsign[15], 2, 1), // 15
    QCELP_OF(lspv   [3], 0, 1), // 14
    QCELP_OF(lspv   [4], 0, 1), // 13
    QCELP_OF(lspv   [5], 0, 1), // 12
    QCELP_OF(cbsign[15], 1, 1), // 11
    QCELP_OF(lspv   [6], 0, 1), // 10
    QCELP_OF(lspv   [7], 0, 1), //  9
    QCELP_OF(lspv   [8], 0, 1), //  8
    QCELP_OF(cbsign[15], 0, 1), //  7
    QCELP_OF(lspv   [9], 0, 1), //  6
    QCELP_OF(cbgain [0], 0, 2), //  5
    QCELP_OF(reserved,   0, 4)  //  3
};

/**
 * Bitmapping data position for each packet type in
 * the QCELPContext
 */
static const QCELPBitmap * const qcelp_unpacking_bitmaps_per_rate[5] = {
    NULL,                     ///< for SILENCE rate
    qcelp_rate_octave_bitmap,
    qcelp_rate_quarter_bitmap,
    qcelp_rate_half_bitmap,
    qcelp_rate_full_bitmap,
};

static const uint16_t qcelp_unpacking_bitmaps_lengths[5] = {
    0, ///< for SILENCE rate
    FF_ARRAY_ELEMS(qcelp_rate_octave_bitmap),
    FF_ARRAY_ELEMS(qcelp_rate_quarter_bitmap),
    FF_ARRAY_ELEMS(qcelp_rate_half_bitmap),
    FF_ARRAY_ELEMS(qcelp_rate_full_bitmap),
};

typedef uint16_t qcelp_vector[2];

/**
 * LSP vector quantization tables in x*10000 form
 *
 * TIA/EIA/IS-733 tables 2.4.3.2.6.3-1 through 2.4.3.2.6.3-5
 */

static const qcelp_vector qcelp_lspvq1[64]= {
{ 327, 118},{ 919, 111},{ 427, 440},{1327, 185},
{ 469,  50},{1272,  91},{ 892,  59},{1771, 193},
{ 222, 158},{1100, 127},{ 827,  55},{ 978, 791},
{ 665,  47},{ 700,1401},{ 670, 859},{1913,1048},
{ 471, 215},{1046, 125},{ 645, 298},{1599, 160},
{ 593,  39},{1187, 462},{ 749, 341},{1520, 511},
{ 290, 792},{ 909, 362},{ 753,  81},{1111,1058},
{ 519, 253},{ 828, 839},{ 685, 541},{1421,1258},
{ 386, 130},{ 962, 119},{ 542, 387},{1431, 185},
{ 526,  51},{1175, 260},{ 831, 167},{1728, 510},
{ 273, 437},{1172, 113},{ 771, 144},{1122, 751},
{ 619, 119},{ 492,1276},{ 658, 695},{1882, 615},
{ 415, 200},{1018,  88},{ 681, 339},{1436, 325},
{ 555, 122},{1042, 485},{ 826, 345},{1374, 743},
{ 383,1018},{1005, 358},{ 704,  86},{1301, 586},
{ 597, 241},{ 832, 621},{ 555, 573},{1504, 839}};

static const qcelp_vector qcelp_lspvq2[128]= {
{ 255, 293},{ 904, 219},{ 151,1211},{1447, 498},
{ 470, 253},{1559, 177},{1547, 994},{2394, 242},
{  91, 813},{ 857, 590},{ 934,1326},{1889, 282},
{ 813, 472},{1057,1494},{ 450,3315},{2163,1895},
{ 538, 532},{1399, 218},{ 146,1552},{1755, 626},
{ 822, 202},{1299, 663},{ 706,1732},{2656, 401},
{ 418, 745},{ 762,1038},{ 583,1748},{1746,1285},
{ 527,1169},{1314, 830},{ 556,2116},{1073,2321},
{ 297, 570},{ 981, 403},{ 468,1103},{1740, 243},
{ 725, 179},{1255, 474},{1374,1362},{1922, 912},
{ 285, 947},{ 930, 700},{ 593,1372},{1909, 576},
{ 588, 916},{1110,1116},{ 224,2719},{1633,2220},
{ 402, 520},{1061, 448},{ 402,1352},{1499, 775},
{ 664, 589},{1081, 727},{ 801,2206},{2165,1157},
{ 566, 802},{ 911,1116},{ 306,1703},{1792, 836},
{ 655, 999},{1061,1038},{ 298,2089},{1110,1753},
{ 361, 311},{ 970, 239},{ 265,1231},{1495, 573},
{ 566, 262},{1569, 293},{1341,1144},{2271, 544},
{ 214, 877},{ 847, 719},{ 794,1384},{2067, 274},
{ 703, 688},{1099,1306},{ 391,2947},{2024,1670},
{ 471, 525},{1245, 290},{ 264,1557},{1568, 807},
{ 718, 399},{1193, 685},{ 883,1594},{2729, 764},
{ 500, 754},{ 809,1108},{ 541,1648},{1523,1385},
{ 614,1196},{1209, 847},{ 345,2242},{1442,1747},
{ 199, 560},{1092, 194},{ 349,1253},{1653, 507},
{ 625, 354},{1376, 431},{1187,1465},{2164, 872},
{ 360, 974},{1008, 698},{ 704,1346},{2114, 452},
{ 720, 816},{1240,1089},{ 439,2475},{1498,2040},
{ 336, 718},{1213, 187},{ 451,1450},{1368, 885},
{ 592, 578},{1131, 531},{ 861,1855},{1764,1500},
{ 444, 970},{ 935, 903},{ 424,1687},{1633,1102},
{ 793, 897},{1060, 897},{ 185,2011},{1205,1855}};

static const qcelp_vector qcelp_lspvq3[128]= {
{ 225, 283},{1296, 355},{ 543, 343},{2073, 274},
{ 204,1099},{1562, 523},{1388, 161},{2784, 274},
{ 112, 849},{1870, 175},{1189, 160},{1490,1088},
{ 969,1115},{ 659,3322},{1158,1073},{3183,1363},
{ 517, 223},{1740, 223},{ 704, 387},{2637, 234},
{ 692,1005},{1287,1610},{ 952, 532},{2393, 646},
{ 490, 552},{1619, 657},{ 845, 670},{1784,2280},
{ 191,1775},{ 272,2868},{ 942, 952},{2628,1479},
{ 278, 579},{1565, 218},{ 814, 180},{2379, 187},
{ 276,1444},{1199,1223},{1200, 349},{3009, 307},
{ 312, 844},{1898, 306},{ 863, 470},{1685,1241},
{ 513,1727},{ 711,2233},{1085, 864},{3398, 527},
{ 414, 440},{1356, 612},{ 964, 147},{2173, 738},
{ 465,1292},{ 877,1749},{1104, 689},{2105,1311},
{ 580, 864},{1895, 752},{ 652, 609},{1485,1699},
{ 514,1400},{ 386,2131},{ 933, 798},{2473, 986},
{ 334, 360},{1375, 398},{ 621, 276},{2183, 280},
{ 311,1114},{1382, 807},{1284, 175},{2605, 636},
{ 230, 816},{1739, 408},{1074, 176},{1619,1120},
{ 784,1371},{ 448,3050},{1189, 880},{3039,1165},
{ 424, 241},{1672, 186},{ 815, 333},{2432, 324},
{ 584,1029},{1137,1546},{1015, 585},{2198, 995},
{ 574, 581},{1746, 647},{ 733, 740},{1938,1737},
{ 347,1710},{ 373,2429},{ 787,1061},{2439,1438},
{ 185, 536},{1489, 178},{ 703, 216},{2178, 487},
{ 154,1421},{1414, 994},{1103, 352},{3072, 473},
{ 408, 819},{2055, 168},{ 998, 354},{1917,1140},
{ 665,1799},{ 993,2213},{1234, 631},{3003, 762},
{ 373, 620},{1518, 425},{ 913, 300},{1966, 836},
{ 402,1185},{ 948,1385},{1121, 555},{1802,1509},
{ 474, 886},{1888, 610},{ 739, 585},{1231,2379},
{ 661,1335},{ 205,2211},{ 823, 822},{2480,1179}};

static const qcelp_vector qcelp_lspvq4[64]= {
{ 348, 311},{ 812,1145},{ 552, 461},{1826, 263},
{ 601, 675},{1730, 172},{1523, 193},{2449, 277},
{ 334, 668},{ 805,1441},{1319, 207},{1684, 910},
{ 582,1318},{1403,1098},{ 979, 832},{2700,1359},
{ 624, 228},{1292, 979},{ 800, 195},{2226, 285},
{ 730, 862},{1537, 601},{1115, 509},{2720, 354},
{ 218,1167},{1212,1538},{1074, 247},{1674,1710},
{ 322,2142},{1263, 777},{ 981, 556},{2119,1710},
{ 193, 596},{1035, 957},{ 694, 397},{1997, 253},
{ 743, 603},{1584, 321},{1346, 346},{2221, 708},
{ 451, 732},{1040,1415},{1184, 230},{1853, 919},
{ 310,1661},{1625, 706},{ 856, 843},{2902, 702},
{ 467, 348},{1108,1048},{ 859, 306},{1964, 463},
{ 560,1013},{1425, 533},{1142, 634},{2391, 879},
{ 397,1084},{1345,1700},{ 976, 248},{1887,1189},
{ 644,2087},{1262, 603},{ 877, 550},{2203,1307}};

static const qcelp_vector qcelp_lspvq5[64]= {
{ 360, 222},{ 820,1097},{ 601, 319},{1656, 198},
{ 604, 513},{1552, 141},{1391, 155},{2474, 261},
{ 269, 785},{1463, 646},{1123, 191},{2015, 223},
{ 785, 844},{1202,1011},{ 980, 807},{3014, 793},
{ 570, 180},{1135,1382},{ 778, 256},{1901, 179},
{ 807, 622},{1461, 458},{1231, 178},{2028, 821},
{ 387, 927},{1496,1004},{ 888, 392},{2246, 341},
{ 295,1462},{1156, 694},{1022, 473},{2226,1364},
{ 210, 478},{1029,1020},{ 722, 181},{1730, 251},
{ 730, 488},{1465, 293},{1303, 326},{2595, 387},
{ 458, 584},{1569, 742},{1029, 173},{1910, 495},
{ 605,1159},{1268, 719},{ 973, 646},{2872, 428},
{ 443, 334},{ 835,1465},{ 912, 138},{1716, 442},
{ 620, 778},{1316, 450},{1186, 335},{1446,1665},
{ 486,1050},{1675,1019},{ 880, 278},{2214, 202},
{ 539,1564},{1142, 533},{ 984, 391},{2130,1089}};

static const qcelp_vector * const qcelp_lspvq[5] = {
    qcelp_lspvq1,
    qcelp_lspvq2,
    qcelp_lspvq3,
    qcelp_lspvq4,
    qcelp_lspvq5
};

/**
 * The final gain scalefactor before clipping into a usable output float
 */
#define QCELP_SCALE 8192.

/**
 * Table for computing Ga (decoded linear codebook gain magnitude)
 *
 * @note The table could fit in int16_t in x*8 form, but it seems
 *       to be slower on x86
 *
 * TIA/EIA/IS-733 2.4.6.2.1-3
 */

static const float qcelp_g12ga[61] = {
    1.000/QCELP_SCALE,   1.125/QCELP_SCALE,   1.250/QCELP_SCALE,   1.375/QCELP_SCALE,
    1.625/QCELP_SCALE,   1.750/QCELP_SCALE,   2.000/QCELP_SCALE,   2.250/QCELP_SCALE,
    2.500/QCELP_SCALE,   2.875/QCELP_SCALE,   3.125/QCELP_SCALE,   3.500/QCELP_SCALE,
    4.000/QCELP_SCALE,   4.500/QCELP_SCALE,   5.000/QCELP_SCALE,   5.625/QCELP_SCALE,
    6.250/QCELP_SCALE,   7.125/QCELP_SCALE,   8.000/QCELP_SCALE,   8.875/QCELP_SCALE,
   10.000/QCELP_SCALE,  11.250/QCELP_SCALE,  12.625/QCELP_SCALE,  14.125/QCELP_SCALE,
   15.875/QCELP_SCALE,  17.750/QCELP_SCALE,  20.000/QCELP_SCALE,  22.375/QCELP_SCALE,
   25.125/QCELP_SCALE,  28.125/QCELP_SCALE,  31.625/QCELP_SCALE,  35.500/QCELP_SCALE,
   39.750/QCELP_SCALE,  44.625/QCELP_SCALE,  50.125/QCELP_SCALE,  56.250/QCELP_SCALE,
   63.125/QCELP_SCALE,  70.750/QCELP_SCALE,  79.375/QCELP_SCALE,  89.125/QCELP_SCALE,
  100.000/QCELP_SCALE, 112.250/QCELP_SCALE, 125.875/QCELP_SCALE, 141.250/QCELP_SCALE,
  158.500/QCELP_SCALE, 177.875/QCELP_SCALE, 199.500/QCELP_SCALE, 223.875/QCELP_SCALE,
  251.250/QCELP_SCALE, 281.875/QCELP_SCALE, 316.250/QCELP_SCALE, 354.875/QCELP_SCALE,
  398.125/QCELP_SCALE, 446.625/QCELP_SCALE, 501.125/QCELP_SCALE, 562.375/QCELP_SCALE,
  631.000/QCELP_SCALE, 708.000/QCELP_SCALE, 794.375/QCELP_SCALE, 891.250/QCELP_SCALE,
 1000.000/QCELP_SCALE};

/**
 * Circular codebook for rate 1 frames in x*100 form
 *
 * TIA/EIA/IS-733 2.4.6.1-2
 */
static const int16_t qcelp_rate_full_codebook[128] = {
     10,  -65,  -59,   12,  110,   34, -134,  157,
    104,  -84,  -34, -115,   23, -101,    3,   45,
   -101,  -16,  -59,   28,  -45,  134,  -67,   22,
     61,  -29,  226,  -26,  -55, -179,  157,  -51,
   -220,  -93,  -37,   60,  118,   74,  -48,  -95,
   -181,  111,   36,  -52, -215,   78, -112,   39,
    -17,  -47, -223,   19,   12,  -98, -142,  130,
     54, -127,   21,  -12,   39,  -48,   12,  128,
      6, -167,   82, -102,  -79,   55,  -44,   48,
    -20,  -53,    8,  -61,   11,  -70, -157, -168,
     20,  -56,  -74,   78,   33,  -63, -173,   -2,
    -75,  -53, -146,   77,   66,  -29,    9,  -75,
     65,  119,  -43,   76,  233,   98,  125, -156,
    -27,   78,   -9,  170,  176,  143, -148,   -7,
     27, -136,    5,   27,   18,  139,  204,    7,
   -184, -197,   52,   -3,   78, -189,    8,  -65
};
#define QCELP_RATE_FULL_CODEBOOK_RATIO .01

/**
 * Circular codebook for rate 1/2 frames in x*2 form
 *
 * TIA/EIA/IS-733 2.4.6.1-1
 */
static const int8_t qcelp_rate_half_codebook[128] = {
     0, -4,  0, -3,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  0,  0,
     0, -3, -2,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  0,  5,
     0,  0,  0,  0,  0,  0,  4,  0,
     0,  3,  2,  0,  3,  4,  0,  0,
     0,  0,  0,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  3,  0,  0,
    -3,  3,  0,  0, -2,  0,  3,  0,
     0,  0,  0,  0,  0,  0, -5,  0,
     0,  0,  0,  3,  0,  0,  0,  3,
     0,  0,  0,  0,  0,  0,  0,  4,
     0,  0,  0,  0,  0,  0,  0,  0,
     0,  3,  6, -3, -4,  0, -3, -3,
     3, -3,  0,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  0,  0
};
#define QCELP_RATE_HALF_CODEBOOK_RATIO 0.5

/**
 * sqrt(1.887) is the maximum of the pseudorandom
 * white sequence used to generate the scaled codebook
 * vector for bitrate 1/4.
 *
 * TIA/EIA/IS-733 2.4.8.1.2
 */
#define QCELP_SQRT1887 1.373681186

/**
 * Table for impulse response of BPF used to filter
 * the white excitation for bitrate 1/4 synthesis
 *
 * Only half the tables are needed because of symmetry.
 *
 * TIA/EIA/IS-733 2.4.8.1.2-1.1
 */
static const double qcelp_rnd_fir_coefs[11] = {
  -1.344519e-1, 1.735384e-2, -6.905826e-2, 2.434368e-2,
  -8.210701e-2, 3.041388e-2, -9.251384e-2, 3.501983e-2,
  -9.918777e-2, 3.749518e-2,  8.985137e-1
};

/**
 * This spread factor is used, for bitrate 1/8 and I_F_Q,
 * to force LSP frequencies to be at least 80 Hz apart.
 *
 * TIA/EIA/IS-733 2.4.3.3.2
 */
#define QCELP_LSP_SPREAD_FACTOR 0.02

/**
 * Predictor coefficient for the conversion of LSP codes
 * to LSP frequencies for 1/8 and I_F_Q
 *
 * TIA/EIA/IS-733 2.4.3.2.7-2
 */
#define QCELP_LSP_OCTAVE_PREDICTOR 29.0/32

/**
 * Initial coefficient to perform bandwidth expansion on LPC
 *
 * @note: 0.9883 looks like an approximation of 253/256.
 *
 * TIA/EIA/IS-733 2.4.3.3.6 6
 */
#define QCELP_BANDWIDTH_EXPANSION_COEFF 0.9883

#endif /* AVCODEC_QCELPDATA_H */