1 /*
2 * Real Audio 1.0 (14.4K)
3 * Copyright (c) 2003 The FFmpeg project
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 #include <stdint.h>
23 #include "avcodec.h"
24 #include "celp_filters.h"
25 #include "mathops.h"
26 #include "ra144.h"
27
28 const int16_t ff_gain_val_tab[256][3] = {
29 { 541, 956, 768}, { 877, 581, 568}, { 675,1574, 635}, {1248,1464, 668},
30 {1246, 839, 1394}, {2560,1386, 991}, { 925, 687, 608}, {2208, 797, 1144},
31 { 535, 832, 799}, { 762, 605, 1154}, { 832,1122, 1003}, {1180, 687, 1176},
32 {1292, 901, 732}, {1656, 689, 896}, {1750,1248, 848}, {2284, 942, 1022},
33 { 824,1472, 643}, { 517, 765, 512}, { 562,1816, 1522}, { 694,1826, 2700},
34 { 704, 524, 672}, {1442, 757, 2232}, { 884, 551, 1266}, {2232,1007, 1692},
35 { 932, 746, 777}, {1132, 822, 926}, {1226, 771, 611}, {2948,1342, 1008},
36 {1302, 594, 1158}, {1602, 636, 1128}, {3408, 910, 1438}, {1996, 614, 575},
37 { 665, 935, 628}, { 631,1192, 829}, { 644, 926, 1052}, { 879, 988, 1226},
38 { 941,2768, 2772}, { 565,1344, 2304}, { 547, 628, 740}, { 639, 532, 1074},
39 { 955,1208, 598}, {1124,1160, 900}, {1206, 899, 1242}, { 746, 533, 624},
40 {1458,1028, 735}, {1706,1102, 692}, {1898,1018, 1004}, {2176, 988, 735},
41 {1578, 782, 1642}, { 897, 516, 754}, {2068, 702, 1656}, {2344, 818, 1526},
42 { 907, 652, 592}, {1056, 652, 642}, {2124,1416, 780}, {2664,1250, 727},
43 {1894, 727, 1108}, {2196, 657, 981}, {4840, 920, 1704}, {4992,1238, 983},
44 {2420, 909, 1094}, {2760, 935, 1032}, {2800, 612, 853}, {3068, 832, 574},
45 { 523,1796, 923}, { 722,1916, 1382}, {1226,1542, 928}, { 758, 757, 584},
46 { 512,1134, 577}, { 615,1276, 698}, { 574,2568, 2356}, { 993,2728, 3512},
47 { 539, 890, 913}, { 694, 928, 1088}, { 805, 600, 1360}, {2160, 951, 3128},
48 { 816, 950, 590}, { 955, 847, 811}, {1094, 883, 556}, {1304, 888, 604},
49 { 863,1170, 855}, {1023, 997, 1032}, { 932,1228, 1280}, { 627, 564, 573},
50 { 876, 900, 1448}, {1030, 857, 1792}, {1294, 953, 1758}, {1612, 854, 1714},
51 {1090,1166, 631}, {1314,1202, 751}, {1480, 905, 795}, {1682,1016, 568},
52 {1494,1178, 983}, { 878, 613, 526}, {1728,1446, 779}, {2136,1348, 774},
53 { 950, 649, 939}, {1180, 703, 899}, {1236, 527, 1158}, {1450, 647, 972},
54 {1282, 647, 707}, {1460, 663, 644}, {1614, 572, 578}, {3516,1222, 821},
55 {2668, 729, 1682}, {3128, 585, 1502}, {3208, 733, 976}, {6800, 871, 1416},
56 {3480, 743, 1408}, {3764, 899, 1170}, {3772, 632, 875}, {4092, 732, 638},
57 {3112, 753, 2620}, {3372, 945, 1890}, {3768, 969, 2288}, {2016, 559, 854},
58 {1736, 729, 787}, {1940, 686, 547}, {2140, 635, 674}, {4480,1272, 828},
59 {3976, 592, 1666}, {4384, 621, 1388}, {4400, 801, 955}, {4656, 522, 646},
60 {4848, 625, 1636}, {4984, 591, 874}, {5352, 535, 1001}, {11216,938, 1184},
61 { 925,3280, 1476}, { 735,1580, 1088}, {1150,1576, 674}, { 655, 783, 528},
62 { 527,2052, 1354}, { 782,1704, 1880}, { 578, 910, 1026}, { 692, 882, 1468},
63 { 586, 683, 715}, { 739, 609, 717}, { 778, 773, 697}, { 922, 785, 813},
64 { 766, 651, 984}, { 978, 596, 1030}, {1070, 757, 1080}, {1324, 687, 1178},
65 {1108,2144, 979}, { 723, 982, 690}, { 936, 956, 527}, {1180,1002, 547},
66 { 517,1306, 825}, { 832,1184, 974}, {1024, 957, 903}, {1262,1090, 906},
67 {1028, 720, 649}, {1192, 679, 694}, {2468,1480, 979}, {2844,1370, 877},
68 {1310, 835, 848}, {1508, 839, 698}, {1742,1030, 769}, {1910, 852, 573},
69 {1280, 859, 1174}, {1584, 863, 1108}, {1686, 708, 1364}, {1942, 768, 1104},
70 { 891, 536, 690}, {1016, 560, 663}, {2172, 870, 1348}, {2404, 999, 1170},
71 {1890, 966, 889}, {2116, 912, 777}, {2296,1020, 714}, {4872,1844, 932},
72 {2392, 778, 929}, {2604, 772, 744}, {2764, 957, 722}, {5832,1532, 984},
73 {2188, 519, 1264}, {2332, 532, 922}, {5064, 995, 2412}, {2708, 571, 874},
74 {2408, 545, 666}, {5016,1084, 875}, {5376, 983, 1196}, {5536, 979, 730},
75 {5344, 634, 1744}, {5688, 706, 1348}, {5912, 977, 1190}, {6072, 905, 763},
76 {6048, 582, 1526}, {11968,1013,1816}, {12864,937, 1900}, {12560,1086, 998},
77 {1998, 684, 1884}, {2504, 633, 1992}, {1252, 567, 835}, {1478, 571, 973},
78 {2620, 769, 1414}, {2808, 952, 1142}, {2908, 712, 1028}, {2976, 686, 741},
79 {1462, 552, 714}, {3296, 991, 1452}, {1590, 615, 544}, {3480,1150, 824},
80 {3212, 832, 923}, {3276, 839, 531}, {3548, 786, 852}, {3732, 764, 570},
81 {5728, 906, 2616}, {6272, 804, 2252}, {3096, 535, 876}, {3228, 598, 649},
82 {6536, 759, 1436}, {6648, 993, 846}, {6864, 567, 1210},{14016,1012, 1302},
83 {3408, 548, 1098}, {7160,1008, 1742}, {7136,1000, 1182}, {7480,1032, 836},
84 {7448, 612, 1552}, {7744, 614, 816}, {8384, 777, 1438}, {8784, 694, 786},
85 { 882,1508, 1068}, { 597, 837, 766}, {1270, 954, 1408}, { 803, 550, 798},
86 {1398,1308, 798}, {1848,1534, 738}, { 970, 675, 608}, {1264, 706, 684},
87 {1716, 767, 1126}, {2108, 765, 1404}, {2236, 924, 1003}, {2472,1048, 611},
88 { 999, 942, 963}, {1094, 857, 935}, {2936, 926, 1138}, {1934, 746, 551},
89 {3336, 633, 1762}, {3764, 701, 1454}, {1890, 564, 636}, {4096,1126, 793},
90 {3936, 556, 1140}, {3936, 540, 740}, {4216, 764, 874}, {8480,1328, 1014},
91 {2184, 515, 1042}, {4432, 934, 1344}, {4784, 945, 1112}, {5016,1062, 733},
92 {9216,1020, 2028}, {9968, 924, 1188}, {5424, 909, 1206}, {6512, 744, 1086}
93 };
94
95 const uint8_t ff_gain_exp_tab[256] = {
96 15, 15, 15, 15, 15, 16, 14, 15, 14, 14, 14, 14, 14, 14, 14, 14,
97 14, 13, 14, 14, 13, 14, 13, 14, 13, 13, 13, 14, 13, 13, 14, 13,
98 13, 13, 13, 13, 14, 13, 12, 12, 13, 13, 13, 12, 13, 13, 13, 13,
99 13, 12, 13, 13, 12, 12, 13, 13, 13, 13, 14, 14, 13, 13, 13, 13,
100 13, 13, 13, 12, 12, 12, 13, 13, 12, 12, 12, 13, 12, 12, 12, 12,
101 12, 12, 12, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 12, 12,
102 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 13, 13, 13, 13,
103 13, 13, 13, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14,
104 13, 12, 12, 11, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
105 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 11, 11, 11, 11,
106 12, 12, 12, 12, 11, 11, 12, 12, 12, 12, 12, 13, 12, 12, 12, 13,
107 12, 12, 13, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14,
108 12, 12, 11, 11, 12, 12, 12, 12, 11, 12, 11, 12, 12, 12, 12, 12,
109 13, 13, 12, 12, 13, 13, 13, 14, 12, 13, 13, 13, 13, 13, 13, 13,
110 11, 10, 11, 10, 11, 11, 10, 10, 11, 11, 11, 11, 10, 9, 11, 10,
111 12, 12, 11, 12, 12, 12, 12, 13, 11, 12, 12, 12, 13, 13, 12, 12
112 };
113
114 const int8_t ff_cb1_vects[128][40]={
115 {
116 38, -4, 15, -4, 14, -13, 12, -11, -2, -6,
117 -6, -11, -45, -16, -11, -13, -7, 6, -12, 4,
118 -20, 3, -16, 12, -1, 12, 46, 24, 0, 33,
119 -3, 9, -12, -12, -8, -7, 17, -6, 0, -2,
120 }, {
121 60, -16, 3, -22, 10, -32, 0, -28, -17, -18,
122 -3, -25, -37, -23, -10, 3, 2, 3, 0, 3,
123 -14, 0, -14, -1, 0, 2, 32, 9, -1, 25,
124 7, 13, -5, 13, 8, 1, 2, 8, -10, 6,
125 }, {
126 27, -12, 28, -2, 6, -7, 15, 9, -11, 1,
127 -13, -11, -40, 4, -29, -14, -19, -5, -23, -8,
128 -30, -13, -17, 0, -14, 12, 34, 20, -2, 25,
129 2, -16, -4, -12, 15, 16, 29, 7, 24, 10,
130 }, {
131 49, -24, 16, -20, 2, -26, 2, -7, -25, -10,
132 -11, -25, -32, -3, -27, 2, -8, -8, -11, -9,
133 -24, -17, -16, -14, -13, 2, 20, 5, -4, 17,
134 14, -12, 3, 13, 33, 25, 14, 23, 15, 19,
135 }, {
136 46, -6, 21, 8, -2, -16, -5, -8, -11, 4,
137 8, 15, -24, 4, -2, -26, -3, -16, -16, -14,
138 -9, -2, -1, 4, 19, 7, 36, 17, 9, 13,
139 0, 31, -5, -12, 7, -8, 11, -15, -13, -4,
140 }, {
141 68, -18, 9, -9, -6, -35, -18, -25, -26, -7,
142 10, 1, -16, -3, -1, -9, 6, -19, -4, -15,
143 -4, -6, 0, -8, 20, -2, 23, 2, 7, 5,
144 12, 35, 1, 13, 24, 0, -3, 0, -22, 4,
145 }, {
146 35, -14, 34, 10, -10, -10, -1, 12, -20, 12,
147 0, 15, -18, 24, -20, -27, -14, -28, -27, -27,
148 -20, -19, -2, -8, 5, 7, 25, 13, 5, 5,
149 6, 5, 2, -12, 31, 15, 23, -1, 12, 8,
150 }, {
151 57, -26, 22, -7, -14, -28, -14, -3, -35, 0,
152 3, 1, -11, 16, -18, -10, -4, -31, -15, -28,
153 -14, -23, -1, -21, 7, -2, 11, -1, 3, -1,
154 18, 9, 10, 13, 49, 24, 8, 14, 2, 16,
155 }, {
156 25, 15, 22, 11, 18, 4, 15, -22, 8, -2,
157 -17, -9, -48, -20, -30, -17, -16, 11, -1, 16,
158 2, 10, -5, 26, -2, -4, 22, 0, 2, 10,
159 -6, 13, -14, 10, -23, 0, 10, -2, 1, 0,
160 }, {
161 47, 3, 11, -6, 15, -13, 2, -38, -6, -13,
162 -15, -22, -40, -28, -28, 0, -5, 8, 10, 15,
163 7, 7, -4, 13, -1, -14, 9, -14, 0, 2,
164 4, 18, -7, 36, -6, 8, -3, 13, -7, 8,
165 }, {
166 14, 7, 36, 13, 10, 10, 18, 0, 0, 5,
167 -25, -8, -43, 0, -48, -18, -27, 0, -12, 3,
168 -7, -6, -7, 13, -15, -5, 11, -3, 0, 2,
169 0, -12, -6, 10, 0, 23, 22, 11, 26, 12,
170 }, {
171 36, -5, 24, -4, 7, -7, 6, -17, -14, -5,
172 -22, -22, -35, -8, -46, -1, -17, -3, 0, 2,
173 -2, -10, -5, 0, -14, -15, -2, -18, -2, -4,
174 11, -7, 1, 36, 18, 32, 7, 27, 17, 20,
175 }, {
176 33, 13, 29, 24, 1, 1, -2, -18, 0, 9,
177 -3, 17, -27, 0, -21, -30, -12, -11, -5, -2,
178 12, 4, 9, 19, 18, -9, 13, -6, 11, -8,
179 -2, 35, -8, 10, -7, -1, 4, -11, -10, -2,
180 }, {
181 55, 1, 17, 6, -1, -16, -15, -35, -15, -2,
182 0, 4, -19, -8, -20, -13, -1, -14, 7, -3,
183 18, 0, 10, 5, 19, -19, 0, -21, 8, -16,
184 9, 39, 0, 36, 10, 7, -9, 4, -20, 5,
185 }, {
186 22, 5, 42, 26, -6, 8, 1, 2, -9, 17,
187 -10, 18, -21, 19, -39, -31, -23, -23, -16, -15,
188 2, -12, 7, 6, 5, -9, 1, -10, 7, -16,
189 4, 9, 0, 10, 17, 22, 16, 2, 14, 9,
190 }, {
191 44, -6, 30, 8, -9, -10, -11, -14, -23, 5,
192 -8, 4, -14, 12, -37, -14, -12, -26, -4, -16,
193 8, -16, 9, -7, 6, -19, -12, -25, 5, -24,
194 15, 13, 8, 36, 34, 31, 1, 18, 4, 18,
195 }, {
196 -3, -5, -9, -7, 15, -1, 5, 13, 2, 12,
197 5, 2, -21, -23, -2, -16, 0, 5, -6, 13,
198 -23, 3, -32, 10, -15, 8, 44, 28, 9, 37,
199 -2, 13, -9, -15, -12, -27, -7, -12, 0, -11,
200 }, {
201 18, -17, -21, -25, 11, -19, -6, -3, -11, 0,
202 7, -11, -13, -31, -1, 0, 9, 1, 5, 12,
203 -18, 0, -31, -2, -13, -1, 30, 14, 7, 29,
204 9, 18, -1, 10, 4, -18, -22, 3, -10, -2,
205 }, {
206 -13, -13, 3, -5, 7, 4, 9, 34, -5, 20,
207 -2, 3, -16, -3, -20, -17, -11, -7, -17, 0,
208 -34, -13, -33, -2, -28, 8, 32, 24, 5, 29,
209 3, -12, 0, -15, 11, -3, 3, 2, 24, 1,
210 }, {
211 8, -25, -8, -23, 3, -13, -3, 17, -20, 8,
212 0, -10, -8, -11, -18, 0, -1, -10, -5, 0,
213 -28, -17, -32, -15, -26, -1, 19, 9, 3, 21,
214 15, -7, 6, 9, 29, 5, -10, 17, 15, 9,
215 }, {
216 4, -6, -3, 5, -1, -4, -11, 16, -6, 23,
217 19, 29, 0, -3, 6, -30, 3, -17, -10, -5,
218 -13, -2, -17, 3, 5, 3, 35, 21, 17, 17,
219 2, 35, -2, -15, 3, -28, -13, -21, -13, -13,
220 }, {
221 26, -19, -15, -12, -5, -22, -24, 0, -21, 12,
222 21, 15, 8, -11, 7, -12, 14, -20, 2, -6,
223 -7, -6, -16, -9, 6, -5, 21, 7, 15, 10,
224 13, 39, 5, 10, 20, -19, -28, -5, -22, -5,
225 }, {
226 -5, -15, 9, 7, -9, 2, -8, 37, -14, 31,
227 11, 29, 5, 16, -11, -30, -7, -29, -21, -18,
228 -23, -19, -18, -9, -7, 3, 23, 17, 14, 9,
229 8, 9, 6, -15, 27, -4, -2, -6, 12, -1,
230 }, {
231 16, -27, -2, -10, -13, -16, -20, 20, -29, 20,
232 14, 16, 13, 8, -9, -13, 2, -33, -9, -19,
233 -17, -23, -17, -22, -6, -6, 9, 2, 12, 2,
234 20, 13, 13, 10, 45, 4, -16, 8, 2, 7,
235 }, {
236 -16, 14, -2, 8, 20, 17, 9, 2, 14, 16,
237 -6, 5, -24, -28, -21, -20, -8, 9, 4, 25,
238 -1, 11, -22, 24, -15, -8, 21, 5, 11, 14,
239 -5, 18, -11, 7, -27, -20, -14, -7, 1, -9,
240 }, {
241 6, 2, -14, -9, 16, -1, -3, -14, 0, 5,
242 -3, -8, -16, -36, -19, -3, 1, 6, 17, 24,
243 4, 7, -21, 11, -14, -18, 7, -9, 9, 7,
244 6, 22, -3, 33, -10, -11, -28, 7, -7, 0,
245 }, {
246 -26, 6, 11, 10, 12, 23, 12, 23, 5, 24,
247 -13, 5, -19, -8, -38, -21, -20, -2, -6, 12,
248 -11, -5, -23, 11, -29, -9, 9, 0, 7, 6,
249 1, -7, -2, 7, -3, 3, -2, 6, 27, 3,
250 }, {
251 -4, -6, 0, -7, 8, 4, 0, 6, -9, 13,
252 -11, -7, -11, -15, -37, -4, -9, -5, 5, 11,
253 -5, -9, -22, -1, -27, -18, -4, -14, 5, 0,
254 12, -3, 4, 32, 14, 12, -17, 22, 17, 11,
255 }, {
256 -8, 12, 3, 21, 3, 14, -8, 5, 4, 28,
257 7, 32, -2, -8, -12, -34, -4, -12, 1, 6,
258 9, 4, -7, 17, 4, -13, 11, -1, 19, -4,
259 0, 39, -4, 7, -11, -21, -20, -16, -10, -11,
260 }, {
261 13, 0, -8, 3, 0, -4, -21, -11, -9, 16,
262 10, 18, 5, -16, -10, -16, 5, -15, 13, 5,
263 15, 1, -6, 4, 6, -23, -2, -16, 17, -12,
264 10, 44, 3, 33, 6, -12, -34, -1, -20, -3,
265 }, {
266 -18, 4, 17, 23, -4, 20, -4, 26, -3, 36,
267 0, 32, 2, 12, -29, -34, -16, -24, -10, -6,
268 0, -12, -8, 4, -8, -13, 0, -6, 16, -12,
269 5, 13, 3, 7, 13, 3, -8, -2, 14, 0,
270 }, {
271 3, -7, 5, 5, -8, 2, -17, 9, -18, 24,
272 2, 19, 10, 4, -28, -17, -5, -28, 2, -7,
273 4, -15, -7, -8, -6, -23, -13, -21, 14, -20,
274 17, 18, 11, 33, 30, 11, -23, 13, 5, 9,
275 }, {
276 60, 10, 7, -1, 9, -8, 6, -13, 2, -15,
277 -1, -10, -13, -11, 15, 0, 6, 9, -1, 0,
278 -13, 1, -11, -3, -13, 21, 13, 26, -7, 31,
279 -10, -7, -16, -33, -31, -10, 22, -8, 1, -2,
280 }, {
281 82, -1, -4, -19, 6, -27, -6, -29, -12, -26,
282 1, -24, -5, -18, 17, 17, 17, 6, 10, 0,
283 -7, -2, -9, -16, -12, 11, 0, 11, -9, 23,
284 0, -3, -8, -8, -13, -1, 8, 7, -7, 6,
285 }, {
286 49, 2, 21, 0, 1, -2, 9, 8, -6, -6,
287 -8, -10, -8, 9, -2, 0, -4, -2, -13, -12,
288 -23, -15, -12, -16, -26, 21, 2, 21, -11, 23,
289 -4, -33, -7, -33, -6, 13, 34, 5, 27, 10,
290 }, {
291 71, -10, 9, -17, -1, -20, -3, -8, -21, -18,
292 -6, -24, 0, 1, 0, 16, 6, -5, 0, -13,
293 -17, -19, -11, -29, -25, 11, -11, 6, -13, 15,
294 7, -29, 0, -8, 11, 22, 20, 21, 17, 18,
295 }, {
296 67, 8, 14, 11, -7, -11, -11, -9, -7, -3,
297 13, 16, 8, 9, 24, -12, 10, -13, -5, -17,
298 -2, -4, 3, -10, 6, 17, 4, 19, 0, 11,
299 -6, 13, -9, -33, -14, -10, 16, -17, -10, -4,
300 }, {
301 90, -3, 2, -6, -10, -29, -24, -26, -21, -15,
302 15, 2, 16, 1, 25, 4, 21, -16, 6, -18,
303 3, -8, 5, -24, 8, 7, -9, 4, -1, 3,
304 5, 18, -1, -7, 2, -1, 2, -1, -19, 3,
305 }, {
306 57, 0, 27, 13, -14, -5, -7, 11, -15, 4,
307 5, 16, 13, 29, 6, -13, 0, -25, -16, -31,
308 -12, -22, 2, -23, -6, 16, -7, 14, -2, 3,
309 0, -12, 0, -33, 9, 13, 28, -3, 14, 7,
310 }, {
311 79, -11, 15, -4, -18, -23, -20, -5, -30, -7,
312 7, 2, 21, 21, 8, 3, 10, -28, -4, -31,
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661 13, 13, -3, 5, -7, -4, -9, -34, 5, -20,
662 2, -3, 16, 3, 20, 17, 11, 7, 17, 0,
663 34, 13, 33, 2, 28, -8, -32, -24, -5, -29,
664 -3, 12, 0, 15, -11, 3, -3, -2, -24, -1,
665 }, {
666 -18, 17, 21, 25, -11, 19, 6, 3, 11, 0,
667 -7, 11, 13, 31, 1, 0, -9, -1, -5, -12,
668 18, 0, 31, 2, 13, 1, -30, -14, -7, -29,
669 -9, -18, 1, -10, -4, 18, 22, -3, 10, 2,
670 }, {
671 3, 5, 9, 7, -15, 1, -5, -13, -2, -12,
672 -5, -2, 21, 23, 2, 16, 0, -5, 6, -13,
673 23, -3, 32, -10, 15, -8, -44, -28, -9, -37,
674 2, -13, 9, 15, 12, 27, 7, 12, 0, 11,
675 }, {
676 -44, 6, -30, -8, 9, 10, 11, 14, 23, -5,
677 8, -4, 14, -12, 37, 14, 12, 26, 4, 16,
678 -8, 16, -9, 7, -6, 19, 12, 25, -5, 24,
679 -15, -13, -8, -36, -34, -31, -1, -18, -4, -18,
680 }, {
681 -22, -5, -42, -26, 6, -8, -1, -2, 9, -17,
682 10, -18, 21, -19, 39, 31, 23, 23, 16, 15,
683 -2, 12, -7, -6, -5, 9, -1, 10, -7, 16,
684 -4, -9, 0, -10, -17, -22, -16, -2, -14, -9,
685 }, {
686 -55, -1, -17, -6, 1, 16, 15, 35, 15, 2,
687 0, -4, 19, 8, 20, 13, 1, 14, -7, 3,
688 -18, 0, -10, -5, -19, 19, 0, 21, -8, 16,
689 -9, -39, 0, -36, -10, -7, 9, -4, 20, -5,
690 }, {
691 -33, -13, -29, -24, -1, -1, 2, 18, 0, -9,
692 3, -17, 27, 0, 21, 30, 12, 11, 5, 2,
693 -12, -4, -9, -19, -18, 9, -13, 6, -11, 8,
694 2, -35, 8, -10, 7, 1, -4, 11, 10, 2,
695 }, {
696 -36, 5, -24, 4, -7, 7, -6, 17, 14, 5,
697 22, 22, 35, 8, 46, 1, 17, 3, 0, -2,
698 2, 10, 5, 0, 14, 15, 2, 18, 2, 4,
699 -11, 7, -1, -36, -18, -32, -7, -27, -17, -20,
700 }, {
701 -14, -7, -36, -13, -10, -10, -18, 0, 0, -5,
702 25, 8, 43, 0, 48, 18, 27, 0, 12, -3,
703 7, 6, 7, -13, 15, 5, -11, 3, 0, -2,
704 0, 12, 6, -10, 0, -23, -22, -11, -26, -12,
705 }, {
706 -47, -3, -11, 6, -15, 13, -2, 38, 6, 13,
707 15, 22, 40, 28, 28, 0, 5, -8, -10, -15,
708 -7, -7, 4, -13, 1, 14, -9, 14, 0, -2,
709 -4, -18, 7, -36, 6, -8, 3, -13, 7, -8,
710 }, {
711 -25, -15, -22, -11, -18, -4, -15, 22, -8, 2,
712 17, 9, 48, 20, 30, 17, 16, -11, 1, -16,
713 -2, -10, 5, -26, 2, 4, -22, 0, -2, -10,
714 6, -13, 14, -10, 23, 0, -10, 2, -1, 0,
715 }, {
716 -57, 26, -22, 7, 14, 28, 14, 3, 35, 0,
717 -3, -1, 11, -16, 18, 10, 4, 31, 15, 28,
718 14, 23, 1, 21, -7, 2, -11, 1, -3, 1,
719 -18, -9, -10, -13, -49, -24, -8, -14, -2, -16,
720 }, {
721 -35, 14, -34, -10, 10, 10, 1, -12, 20, -12,
722 0, -15, 18, -24, 20, 27, 14, 28, 27, 27,
723 20, 19, 2, 8, -5, -7, -25, -13, -5, -5,
724 -6, -5, -2, 12, -31, -15, -23, 1, -12, -8,
725 }, {
726 -68, 18, -9, 9, 6, 35, 18, 25, 26, 7,
727 -10, -1, 16, 3, 1, 9, -6, 19, 4, 15,
728 4, 6, 0, 8, -20, 2, -23, -2, -7, -5,
729 -12, -35, -1, -13, -24, 0, 3, 0, 22, -4,
730 }, {
731 -46, 6, -21, -8, 2, 16, 5, 8, 11, -4,
732 -8, -15, 24, -4, 2, 26, 3, 16, 16, 14,
733 9, 2, 1, -4, -19, -7, -36, -17, -9, -13,
734 0, -31, 5, 12, -7, 8, -11, 15, 13, 4,
735 }, {
736 -49, 24, -16, 20, -2, 26, -2, 7, 25, 10,
737 11, 25, 32, 3, 27, -2, 8, 8, 11, 9,
738 24, 17, 16, 14, 13, -2, -20, -5, 4, -17,
739 -14, 12, -3, -13, -33, -25, -14, -23, -15, -19,
740 }, {
741 -27, 12, -28, 2, -6, 7, -15, -9, 11, -1,
742 13, 11, 40, -4, 29, 14, 19, 5, 23, 8,
743 30, 13, 17, 0, 14, -12, -34, -20, 2, -25,
744 -2, 16, 4, 12, -15, -16, -29, -7, -24, -10,
745 }, {
746 -60, 16, -3, 22, -10, 32, 0, 28, 17, 18,
747 3, 25, 37, 23, 10, -3, -2, -3, 0, -3,
748 14, 0, 14, 1, 0, -2, -32, -9, 1, -25,
749 -7, -13, 5, -13, -8, -1, -2, -8, 10, -6,
750 }, {
751 -38, 4, -15, 4, -14, 13, -12, 11, 2, 6,
752 6, 11, 45, 16, 11, 13, 7, -6, 12, -4,
753 20, -3, 16, -12, 1, -12, -46, -24, 0, -33,
754 3, -9, 12, 12, 8, 7, -17, 6, 0, 2
755 }
756 };
757
758 const int8_t ff_cb2_vects[128][40]={
759 {
760 73, -32, -60, -15, -26, 59, 2, -33, 30, -10,
761 -3, -17, 8, 30, -1, -26, -4, -22, 10, 16,
762 -36, -5, -11, 56, 37, 6, -10, -5, -13, -3,
763 6, -5, 11, 4, -19, -5, -16, 41, 24, 13,
764 }, {
765 4, -11, -37, 23, -5, 46, -2, -29, -5, -39,
766 -21, -9, 0, 49, 12, -9, -16, -26, 22, 15,
767 -45, -20, -5, 40, 22, 17, -26, 31, -14, 2,
768 -14, 10, 30, 20, -27, -9, -39, 39, 18, 5,
769 }, {
770 34, -25, -48, -28, -11, 34, -2, -41, 9, -7,
771 -17, 21, 20, 24, -17, -33, 0, -24, 10, 42,
772 3, -5, 10, 42, 11, 8, -3, 3, 16, 9,
773 22, -2, 0, -33, -10, 18, 7, 58, 10, 28,
774 }, {
775 -34, -4, -25, 10, 9, 21, -7, -36, -26, -36,
776 -35, 28, 12, 42, -3, -16, -12, -28, 21, 42,
777 -5, -21, 16, 26, -4, 19, -19, 39, 15, 15,
778 1, 13, 19, -17, -17, 14, -15, 55, 4, 19,
779 }, {
780 28, -20, -51, -14, -6, 7, 0, -26, 27, -4,
781 18, -40, -6, 16, -1, -15, 0, -55, -5, -16,
782 -19, 14, -3, 49, 14, 1, -22, -30, -12, 0,
783 24, 15, 9, -17, -45, -29, 4, 28, 51, 35,
784 }, {
785 -40, 0, -28, 24, 14, -5, -4, -21, -7, -33,
786 0, -32, -15, 35, 12, 1, -11, -58, 5, -16,
787 -28, 0, 1, 33, 0, 11, -39, 5, -14, 6,
788 3, 31, 28, -1, -53, -33, -19, 25, 46, 26,
789 }, {
790 -11, -14, -39, -27, 9, -17, -4, -33, 6, 0,
791 4, -1, 5, 10, -17, -22, 5, -57, -5, 9,
792 20, 13, 18, 35, -11, 3, -16, -22, 17, 13,
793 40, 19, -1, -55, -35, -5, 27, 44, 37, 49,
794 }, {
795 -80, 6, -16, 11, 30, -30, -9, -28, -28, -29,
796 -13, 6, -2, 28, -3, -5, -7, -60, 5, 9,
797 11, -1, 24, 19, -27, 13, -32, 13, 15, 19,
798 19, 35, 17, -39, -43, -9, 4, 42, 32, 41,
799 }, {
800 78, -21, -43, 4, -38, 17, 17, -5, 55, 24,
801 -15, -36, 14, 4, 24, -24, 12, 5, 17, 31,
802 -54, -5, -2, 27, 43, -12, 2, 9, -9, -15,
803 22, -3, 28, 21, -20, 3, 20, 28, 9, -5,
804 }, {
805 9, -1, -20, 43, -17, 3, 12, 0, 20, -4,
806 -33, -29, 6, 22, 38, -7, 0, 1, 29, 30,
807 -63, -21, 3, 11, 27, -1, -14, 45, -10, -9,
808 1, 12, 47, 37, -28, 0, -2, 26, 4, -13,
809 }, {
810 39, -14, -30, -8, -22, -8, 12, -12, 34, 27,
811 -29, 2, 26, -2, 8, -31, 16, 3, 17, 57,
812 -14, -6, 19, 13, 16, -10, 8, 17, 20, -2,
813 38, 0, 17, -16, -11, 27, 44, 45, -4, 8,
814 }, {
815 -29, 5, -7, 30, -1, -21, 7, -7, 0, 0,
816 -47, 9, 18, 15, 22, -14, 4, 0, 28, 57,
817 -23, -21, 25, -2, 1, 0, -7, 53, 19, 3,
818 17, 15, 36, 0, -19, 24, 21, 43, -9, 0,
819 }, {
820 33, -10, -34, 5, -17, -35, 15, 1, 53, 30,
821 6, -59, 0, -10, 24, -13, 17, -27, 1, -1,
822 -37, 13, 4, 20, 20, -18, -10, -16, -8, -11,
823 39, 18, 26, 0, -46, -20, 41, 15, 37, 15,
824 }, {
825 -35, 10, -11, 44, 3, -48, 10, 6, 17, 2,
826 -11, -51, -8, 8, 38, 3, 4, -31, 12, -2,
827 -46, -1, 10, 4, 5, -7, -26, 19, -10, -5,
828 18, 34, 45, 15, -54, -24, 18, 13, 31, 7,
829 }, {
830 -5, -3, -21, -7, -2, -60, 10, -5, 32, 34,
831 -7, -20, 11, -16, 8, -20, 21, -29, 1, 24,
832 2, 13, 27, 6, -5, -15, -3, -8, 21, 1,
833 55, 21, 15, -38, -37, 3, 65, 32, 23, 30,
834 }, {
835 -74, 17, 0, 31, 18, -73, 5, 0, -3, 5,
836 -25, -12, 3, 1, 22, -3, 9, -33, 12, 24,
837 -6, -2, 33, -9, -21, -5, -20, 27, 19, 7,
838 34, 37, 34, -22, -44, 0, 41, 29, 17, 21,
839 }, {
840 76, -35, -31, -28, -49, 43, -40, 0, 29, -14,
841 8, 5, 10, 18, -26, -46, 0, 7, 6, 3,
842 -25, -7, -2, 40, 28, 14, 18, -3, -27, -28,
843 -8, -45, -13, 34, -13, -27, -15, 31, 12, 3,
844 }, {
845 7, -15, -9, 9, -28, 29, -45, 5, -6, -43,
846 -9, 12, 2, 36, -12, -30, -11, 3, 17, 3,
847 -34, -22, 3, 24, 12, 24, 2, 32, -28, -22,
848 -29, -29, 5, 50, -21, -31, -38, 29, 7, -5,
849 }, {
850 36, -29, -19, -41, -34, 18, -45, -6, 8, -10,
851 -5, 43, 23, 11, -42, -53, 5, 5, 6, 30,
852 14, -8, 20, 26, 1, 16, 25, 4, 3, -15,
853 7, -41, -23, -3, -4, -3, 8, 48, -1, 17,
854 }, {
855 -32, -8, 3, -2, -13, 4, -50, -1, -27, -39,
856 -23, 51, 15, 30, -27, -37, -7, 1, 17, 29,
857 5, -23, 25, 10, -14, 26, 8, 41, 1, -9,
858 -13, -26, -5, 12, -12, -7, -14, 45, -6, 9,
859 }, {
860 31, -24, -23, -27, -29, -9, -43, 8, 26, -7,
861 30, -17, -4, 3, -26, -35, 5, -24, -10, -28,
862 -9, 12, 5, 33, 5, 8, 5, -29, -26, -24,
863 9, -23, -14, 12, -39, -52, 5, 18, 39, 24,
864 }, {
865 -37, -3, 0, 10, -7, -22, -48, 12, -8, -36,
866 12, -9, -12, 22, -12, -19, -6, -28, 0, -29,
867 -18, -3, 11, 17, -10, 18, -10, 7, -27, -18,
868 -11, -7, 3, 28, -47, -55, -18, 15, 34, 16,
869 }, {
870 -8, -17, -10, -40, -13, -34, -47, 0, 5, -4,
871 16, 21, 8, -2, -42, -43, 10, -26, -10, -2,
872 31, 11, 27, 19, -21, 10, 12, -20, 3, -11,
873 25, -20, -25, -25, -29, -28, 28, 34, 25, 38,
874 }, {
875 -77, 2, 11, -1, 7, -47, -52, 5, -29, -33,
876 -1, 28, 0, 15, -28, -26, -2, -30, 0, -2,
877 22, -4, 33, 3, -36, 21, -3, 15, 2, -5,
878 4, -4, -6, -9, -37, -31, 5, 32, 20, 30,
879 }, {
880 81, -25, -14, -8, -61, 0, -25, 28, 54, 20,
881 -3, -14, 17, -8, 0, -44, 16, 35, 13, 18,
882 -43, -7, 6, 11, 33, -4, 30, 11, -22, -40,
883 6, -43, 3, 50, -14, -18, 22, 18, -1, -16,
884 }, {
885 12, -4, 8, 29, -39, -12, -30, 33, 19, -8,
886 -21, -6, 8, 9, 13, -28, 4, 31, 24, 18,
887 -52, -23, 12, -4, 18, 5, 14, 47, -24, -34,
888 -14, -27, 22, 66, -22, -22, -1, 16, -6, -24,
889 }, {
890 41, -18, -2, -21, -45, -24, -30, 21, 33, 24,
891 -17, 24, 29, -15, -16, -51, 21, 33, 13, 45,
892 -3, -8, 28, -2, 7, -2, 37, 19, 7, -27,
893 22, -39, -7, 12, -5, 5, 45, 35, -15, -1,
894 }, {
895 -27, 1, 20, 17, -24, -38, -35, 26, -1, -4,
896 -35, 32, 21, 3, -2, -35, 8, 29, 24, 44,
897 -12, -24, 34, -18, -8, 7, 21, 55, 5, -21,
898 2, -23, 11, 28, -13, 1, 22, 33, -21, -10,
899 }, {
900 36, -13, -5, -7, -40, -51, -28, 36, 52, 27,
901 18, -36, 2, -22, 0, -33, 21, 2, -3, -13,
902 -26, 11, 14, 4, 10, -10, 18, -14, -22, -36,
903 24, -21, 1, 28, -40, -42, 42, 5, 25, 5,
904 }, {
905 -32, 6, 17, 31, -19, -65, -33, 41, 16, -1,
906 0, -29, -6, -4, 13, -17, 9, -1, 8, -14,
907 -35, -3, 19, -11, -4, 0, 1, 21, -23, -30,
908 3, -5, 20, 44, -48, -46, 19, 3, 20, -3,
909 }, {
910 -3, -7, 6, -20, -25, -77, -32, 29, 31, 30,
911 4, 2, 14, -29, -16, -40, 26, 0, -3, 12,
912 13, 10, 36, -9, -15, -8, 24, -6, 7, -22,
913 40, -17, -8, -9, -31, -18, 66, 22, 11, 19,
914 }, {
915 -72, 13, 29, 18, -4, -90, -37, 34, -4, 1,
916 -13, 9, 6, -11, -2, -24, 13, -3, 7, 11,
917 4, -4, 42, -25, -31, 1, 8, 29, 6, -17,
918 19, -2, 10, 6, -38, -22, 42, 19, 6, 11,
919 }, {
920 116, -20, -68, -30, -28, 83, 28, -18, 32, -22,
921 -13, -21, 5, 28, 5, -7, -24, -8, -22, 17,
922 -23, 30, -25, 45, 15, -9, -11, -18, 22, -10,
923 4, -2, 19, -12, 23, 3, -43, 2, 12, -4,
924 }, {
925 47, 0, -45, 7, -7, 69, 23, -13, -2, -51,
926 -32, -14, -3, 47, 19, 8, -37, -11, -10, 16,
927 -32, 15, -19, 29, 0, 1, -28, 18, 20, -4,
928 -16, 13, 38, 3, 15, 0, -66, 0, 7, -13,
929 }, {
930 77, -13, -56, -43, -13, 57, 23, -26, 11, -19,
931 -27, 16, 17, 22, -10, -15, -19, -10, -22, 43,
932 16, 30, -2, 31, -11, -6, -5, -9, 52, 2,
933 20, 0, 8, -50, 33, 27, -19, 19, -1, 9,
934 }, {
935 8, 6, -33, -4, 7, 44, 18, -21, -23, -48,
936 -46, 24, 9, 40, 3, 1, -32, -13, -11, 43,
937 7, 14, 3, 15, -26, 3, -21, 26, 50, 8,
938 0, 16, 27, -34, 25, 23, -43, 17, -6, 1,
939 }, {
940 71, -9, -59, -29, -8, 30, 26, -11, 30, -16,
941 8, -44, -9, 14, 5, 2, -19, -40, -38, -15,
942 -7, 50, -17, 38, -7, -14, -24, -43, 22, -6,
943 22, 19, 17, -34, -2, -20, -23, -10, 39, 16,
944 }, {
945 2, 11, -36, 9, 13, 17, 21, -6, -5, -45,
946 -10, -36, -18, 33, 19, 19, -31, -44, -27, -15,
947 -16, 34, -11, 22, -22, -4, -40, -7, 21, 0,
948 1, 35, 36, -18, -10, -24, -46, -12, 34, 8,
949 }, {
950 32, -2, -47, -42, 7, 5, 21, -18, 9, -12,
951 -5, -5, 2, 8, -10, -4, -14, -42, -38, 10,
952 33, 49, 5, 24, -33, -12, -17, -35, 52, 6,
953 38, 22, 7, -72, 7, 3, 0, 6, 25, 30,
954 }, {
955 -36, 18, -24, -3, 28, -7, 16, -13, -26, -41,
956 -24, 1, -5, 26, 3, 12, -27, -46, -27, 10,
957 24, 34, 10, 8, -49, -2, -34, 0, 51, 12,
958 17, 38, 25, -56, 0, 0, -22, 3, 20, 22,
959 }, {
960 121, -9, -50, -10, -40, 40, 43, 9, 58, 12,
961 -25, -41, 11, 2, 31, -5, -8, 19, -15, 32,
962 -41, 30, -16, 16, 20, -28, 0, -3, 26, -22,
963 19, 0, 36, 4, 22, 12, -6, -9, -1, -24,
964 }, {
965 52, 10, -27, 27, -18, 26, 38, 14, 23, -16,
966 -44, -33, 3, 20, 45, 10, -20, 15, -3, 31,
967 -50, 14, -10, 0, 5, -17, -15, 32, 24, -16,
968 -1, 15, 55, 20, 14, 8, -29, -12, -7, -32,
969 }, {
970 82, -3, -38, -23, -24, 15, 38, 2, 37, 15,
971 -39, -2, 23, -4, 15, -12, -3, 17, -15, 58,
972 -1, 29, 6, 2, -5, -26, 7, 4, 56, -9,
973 35, 3, 25, -33, 32, 36, 17, 7, -15, -9,
974 }, {
975 13, 17, -15, 15, -3, 1, 33, 7, 1, -12,
976 -58, 5, 15, 13, 29, 3, -16, 13, -4, 57,
977 -10, 13, 11, -13, -21, -15, -9, 40, 55, -3,
978 14, 19, 44, -17, 24, 32, -5, 4, -21, -18,
979 }, {
980 76, 1, -41, -9, -19, -12, 41, 17, 55, 18,
981 -3, -63, -3, -12, 30, 5, -3, -12, -31, 0,
982 -24, 49, -8, 9, -1, -33, -12, -29, 27, -18,
983 37, 21, 34, -17, -3, -11, 14, -23, 25, -2,
984 }, {
985 7, 22, -18, 29, 1, -25, 36, 21, 20, -9,
986 -22, -56, -11, 6, 45, 21, -15, -16, -20, -1,
987 -33, 34, -2, -6, -17, -23, -28, 6, 25, -12,
988 16, 37, 53, -1, -11, -15, -8, -25, 20, -11,
989 }, {
990 37, 8, -29, -22, -4, -37, 36, 9, 34, 22,
991 -17, -24, 8, -18, 15, -2, 1, -14, -31, 25,
992 15, 48, 13, -4, -28, -31, -5, -21, 57, -4,
993 53, 24, 23, -55, 6, 12, 37, -6, 11, 11,
994 }, {
995 -31, 28, -6, 16, 16, -50, 31, 14, 0, -6,
996 -36, -17, 0, 0, 29, 14, -11, -18, -20, 25,
997 6, 33, 19, -20, -43, -21, -21, 14, 55, 0,
998 32, 40, 42, -39, -1, 8, 14, -8, 6, 3,
999 }, {
1000 119, -24, -39, -44, -51, 66, -14, 15, 31, -26,
1001 -1, 0, 7, 16, -19, -28, -19, 22, -26, 4,
1002 -13, 28, -16, 29, 5, -1, 16, -16, 8, -35,
1003 -10, -42, -4, 17, 29, -19, -42, -7, 0, -15,
1004 }, {
1005 50, -3, -16, -5, -30, 53, -19, 20, -3, -55,
1006 -19, 8, 0, 34, -5, -11, -32, 18, -15, 4,
1007 -22, 13, -10, 13, -9, 8, 0, 19, 7, -29,
1008 -31, -26, 13, 33, 21, -22, -65, -9, -4, -23,
1009 }, {
1010 79, -17, -27, -56, -36, 41, -19, 8, 10, -22,
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1344 }, {
1345 -39, 14, 30, 8, 22, 8, -12, 12, -34, -27,
1346 29, -2, -26, 2, -8, 31, -16, -3, -17, -57,
1347 14, 6, -19, -13, -16, 10, -8, -17, -20, 2,
1348 -38, 0, -17, 16, 11, -27, -44, -45, 4, -8,
1349 }, {
1350 -9, 1, 20, -43, 17, -3, -12, 0, -20, 4,
1351 33, 29, -6, -22, -38, 7, 0, -1, -29, -30,
1352 63, 21, -3, -11, -27, 1, 14, -45, 10, 9,
1353 -1, -12, -47, -37, 28, 0, 2, -26, -4, 13,
1354 }, {
1355 -78, 21, 43, -4, 38, -17, -17, 5, -55, -24,
1356 15, 36, -14, -4, -24, 24, -12, -5, -17, -31,
1357 54, 5, 2, -27, -43, 12, -2, -9, 9, 15,
1358 -22, 3, -28, -21, 20, -3, -20, -28, -9, 5,
1359 }, {
1360 80, -6, 16, -11, -30, 30, 9, 28, 28, 29,
1361 13, -6, 2, -28, 3, 5, 7, 60, -5, -9,
1362 -11, 1, -24, -19, 27, -13, 32, -13, -15, -19,
1363 -19, -35, -17, 39, 43, 9, -4, -42, -32, -41,
1364 }, {
1365 11, 14, 39, 27, -9, 17, 4, 33, -6, 0,
1366 -4, 1, -5, -10, 17, 22, -5, 57, 5, -9,
1367 -20, -13, -18, -35, 11, -3, 16, 22, -17, -13,
1368 -40, -19, 1, 55, 35, 5, -27, -44, -37, -49,
1369 }, {
1370 40, 0, 28, -24, -14, 5, 4, 21, 7, 33,
1371 0, 32, 15, -35, -12, -1, 11, 58, -5, 16,
1372 28, 0, -1, -33, 0, -11, 39, -5, 14, -6,
1373 -3, -31, -28, 1, 53, 33, 19, -25, -46, -26,
1374 }, {
1375 -28, 20, 51, 14, 6, -7, 0, 26, -27, 4,
1376 -18, 40, 6, -16, 1, 15, 0, 55, 5, 16,
1377 19, -14, 3, -49, -14, -1, 22, 30, 12, 0,
1378 -24, -15, -9, 17, 45, 29, -4, -28, -51, -35,
1379 }, {
1380 34, 4, 25, -10, -9, -21, 7, 36, 26, 36,
1381 35, -28, -12, -42, 3, 16, 12, 28, -21, -42,
1382 5, 21, -16, -26, 4, -19, 19, -39, -15, -15,
1383 -1, -13, -19, 17, 17, -14, 15, -55, -4, -19,
1384 }, {
1385 -34, 25, 48, 28, 11, -34, 2, 41, -9, 7,
1386 17, -21, -20, -24, 17, 33, 0, 24, -10, -42,
1387 -3, 5, -10, -42, -11, -8, 3, -3, -16, -9,
1388 -22, 2, 0, 33, 10, -18, -7, -58, -10, -28,
1389 }, {
1390 -4, 11, 37, -23, 5, -46, 2, 29, 5, 39,
1391 21, 9, 0, -49, -12, 9, 16, 26, -22, -15,
1392 45, 20, 5, -40, -22, -17, 26, -31, 14, -2,
1393 14, -10, -30, -20, 27, 9, 39, -39, -18, -5,
1394 }, {
1395 -73, 32, 60, 15, 26, -59, -2, 33, -30, 10,
1396 3, 17, -8, -30, 1, 26, 4, 22, -10, -16,
1397 36, 5, 11, -56, -37, -6, 10, 5, 13, 3,
1398 -6, 5, -11, -4, 19, 5, 16, -41, -24, -13
1399 }
1400 };
1401
1402 const uint16_t ff_cb1_base[128]={
1403 19657, 18474, 18365, 17520, 21048, 18231, 18584, 16671,
1404 20363, 19069, 19409, 18430, 21844, 18753, 19613, 17411,
1405 20389, 21772, 20129, 21702, 20978, 20472, 19627, 19387,
1406 21477, 23134, 21841, 23919, 22089, 21519, 21134, 20852,
1407 19675, 17821, 19044, 17477, 19986, 16955, 18446, 16086,
1408 21138, 18899, 20952, 18929, 21452, 17833, 20104, 17159,
1409 19770, 20056, 20336, 20866, 19329, 18217, 18908, 18004,
1410 21556, 21948, 23079, 23889, 20922, 19544, 20984, 19781,
1411 19781, 20984, 19544, 20922, 23889, 23079, 21948, 21556,
1412 18004, 18908, 18217, 19329, 20866, 20336, 20056, 19770,
1413 17159, 20104, 17833, 21452, 18929, 20952, 18899, 21138,
1414 16086, 18446, 16955, 19986, 17477, 19044, 17821, 19675,
1415 20852, 21134, 21519, 22089, 23919, 21841, 23134, 21477,
1416 19387, 19627, 20472, 20978, 21702, 20129, 21772, 20389,
1417 17411, 19613, 18753, 21844, 18430, 19409, 19069, 20363,
1418 16671, 18584, 18231, 21048, 17520, 18365, 18474, 19657,
1419 };
1420
1421 const uint16_t ff_cb2_base[128]={
1422 12174, 13380, 13879, 13832, 13170, 13227, 13204, 12053,
1423 12410, 13988, 14348, 14631, 13100, 13415, 13224, 12268,
1424 11982, 13825, 13499, 14210, 13877, 14788, 13811, 13109,
1425 11449, 13275, 12833, 13717, 12728, 13696, 12759, 12405,
1426 10230, 12185, 11628, 13161, 11762, 13458, 12312, 12818,
1427 10443, 12773, 12011, 14020, 11818, 13825, 12453, 13226,
1428 10446, 13162, 11881, 14300, 12859, 16288, 13490, 15053,
1429 10155, 12820, 11519, 13973, 12041, 15081, 12635, 14198,
1430 14198, 12635, 15081, 12041, 13973, 11519, 12820, 10155,
1431 15053, 13490, 16288, 12859, 14300, 11881, 13162, 10446,
1432 13226, 12453, 13825, 11818, 14020, 12011, 12773, 10443,
1433 12818, 12312, 13458, 11762, 13161, 11628, 12185, 10230,
1434 12405, 12759, 13696, 12728, 13717, 12833, 13275, 11449,
1435 13109, 13811, 14788, 13877, 14210, 13499, 13825, 11982,
1436 12268, 13224, 13415, 13100, 14631, 14348, 13988, 12410,
1437 12053, 13204, 13227, 13170, 13832, 13879, 13380, 12174,
1438 };
1439
1440 const int16_t ff_energy_tab[32]={
1441 0, 16, 20, 25, 32, 41, 51, 65,
1442 81, 103, 129, 163, 205, 259, 326, 410,
1443 516, 650, 819, 1031, 1298, 1634, 2057, 2590,
1444 3261, 4105, 5168, 6507, 8192, 10313, 12983, 16345
1445 };
1446
1447 static const int16_t lpc_refl_cb1[64]={
1448 -4041, -4018, -3998, -3977, -3954, -3930, -3906, -3879,
1449 -3852, -3825, -3795, -3764, -3731, -3699, -3666, -3631,
1450 -3594, -3555, -3513, -3468, -3420, -3372, -3321, -3268,
1451 -3212, -3153, -3090, -3021, -2944, -2863, -2772, -2676,
1452 -2565, -2445, -2328, -2202, -2072, -1941, -1808, -1660,
1453 -1508, -1348, -1185, -994, -798, -600, -374, -110,
1454 152, 447, 720, 982, 1229, 1456, 1682, 1916,
1455 2130, 2353, 2595, 2853, 3118, 3363, 3588, 3814
1456 };
1457
1458 static const int16_t lpc_refl_cb2[32]={
1459 -3091, -2386, -1871, -1425, -1021, -649, -316, -20,
1460 267, 544, 810, 1065, 1305, 1534, 1756, 1970,
1461 2171, 2359, 2536, 2700, 2854, 2996, 3133, 3263,
1462 3386, 3499, 3603, 3701, 3789, 3870, 3947, 4020
1463 };
1464
1465 static const int16_t lpc_refl_cb3[32]={
1466 -3525, -3295, -3081, -2890, -2696, -2511, -2328, -2149,
1467 -1979, -1817, -1658, -1498, -1341, -1188, -1032, -876,
1468 -721, -561, -394, -228, -54, 119, 296, 484,
1469 683, 895, 1123, 1373, 1651, 1965, 2360, 2854
1470 };
1471
1472 static const int16_t lpc_refl_cb4[16]={
1473 -1845, -1057, -522, -77, 301, 647, 975, 1285,
1474 1582, 1873, 2163, 2452, 2735, 3017, 3299, 3569
1475 };
1476
1477 static const int16_t lpc_refl_cb5[16]={
1478 -2691, -2187, -1788, -1435, -1118, -837, -571, -316,
1479 -59, 201, 470, 759, 1077, 1457, 1908, 2495
1480 };
1481
1482 static const int16_t lpc_refl_cb6[8]={
1483 -1372, -474, 133, 632, 1100, 1571, 2075, 2672
1484 };
1485
1486 static const int16_t lpc_refl_cb7[8]={
1487 -2389, -1787, -1231, -717, -239, 234, 770, 1474
1488 };
1489
1490 static const int16_t lpc_refl_cb8[8]={
1491 -1569, -864, -296, 200, 670, 1151, 1709, 2385
1492 };
1493
1494 static const int16_t lpc_refl_cb9[8]={
1495 -2200, -1608, -1062, -569, -120, 338, 863, 1621
1496 };
1497
1498 static const int16_t lpc_refl_cb10[4]={
1499 -617, 190, 802, 1483
1500 };
1501
1502 const int16_t * const ff_lpc_refl_cb[10]={
1503 lpc_refl_cb1, lpc_refl_cb2, lpc_refl_cb3, lpc_refl_cb4, lpc_refl_cb5,
1504 lpc_refl_cb6, lpc_refl_cb7, lpc_refl_cb8, lpc_refl_cb9, lpc_refl_cb10
1505 };
1506
add_wav(int16_t * dest,int n,int skip_first,int * m,const int16_t * s1,const int8_t * s2,const int8_t * s3)1507 static void add_wav(int16_t *dest, int n, int skip_first, int *m,
1508 const int16_t *s1, const int8_t *s2, const int8_t *s3)
1509 {
1510 int i;
1511 int v[3];
1512
1513 v[0] = 0;
1514 for (i=!skip_first; i<3; i++)
1515 v[i] = (ff_gain_val_tab[n][i] * (unsigned)m[i]) >> ff_gain_exp_tab[n];
1516
1517 if (v[0]) {
1518 for (i=0; i < BLOCKSIZE; i++)
1519 dest[i] = (int)((s1[i]*(unsigned)v[0]) + s2[i]*v[1] + s3[i]*v[2]) >> 12;
1520 } else {
1521 for (i=0; i < BLOCKSIZE; i++)
1522 dest[i] = ( s2[i]*v[1] + s3[i]*v[2]) >> 12;
1523 }
1524 }
1525
1526 /**
1527 * Copy the last offset values of *source to *target. If those values are not
1528 * enough to fill the target buffer, fill it with another copy of those values.
1529 */
ff_copy_and_dup(int16_t * target,const int16_t * source,int offset)1530 void ff_copy_and_dup(int16_t *target, const int16_t *source, int offset)
1531 {
1532 source += BUFFERSIZE - offset;
1533
1534 memcpy(target, source, FFMIN(BLOCKSIZE, offset)*sizeof(*target));
1535 if (offset < BLOCKSIZE)
1536 memcpy(target + offset, source, (BLOCKSIZE - offset)*sizeof(*target));
1537 }
1538
1539 /**
1540 * Evaluate the reflection coefficients from the filter coefficients.
1541 *
1542 * @return 1 if one of the reflection coefficients is greater than
1543 * 4095, 0 if not.
1544 */
ff_eval_refl(int * refl,const int16_t * coefs,AVCodecContext * avctx)1545 int ff_eval_refl(int *refl, const int16_t *coefs, AVCodecContext *avctx)
1546 {
1547 int b, i, j;
1548 int buffer1[LPC_ORDER];
1549 int buffer2[LPC_ORDER];
1550 int *bp1 = buffer1;
1551 int *bp2 = buffer2;
1552
1553 for (i=0; i < LPC_ORDER; i++)
1554 buffer2[i] = coefs[i];
1555
1556 refl[LPC_ORDER-1] = bp2[LPC_ORDER-1];
1557
1558 if ((unsigned) bp2[LPC_ORDER-1] + 0x1000 > 0x1fff) {
1559 av_log(avctx, AV_LOG_ERROR, "Overflow. Broken sample?\n");
1560 return 1;
1561 }
1562
1563 for (i = LPC_ORDER-2; i >= 0; i--) {
1564 b = 0x1000-((bp2[i+1] * bp2[i+1]) >> 12);
1565
1566 if (!b)
1567 b = -2;
1568
1569 b = 0x1000000 / b;
1570 for (j=0; j <= i; j++) {
1571 #if CONFIG_FTRAPV
1572 int a = bp2[j] - ((int)(refl[i+1] * (unsigned)bp2[i-j]) >> 12);
1573 if((int)(a*(unsigned)b) != a*(int64_t)b)
1574 return 1;
1575 #endif
1576 bp1[j] = (int)((bp2[j] - ((int)(refl[i+1] * (unsigned)bp2[i-j]) >> 12)) * (unsigned)b) >> 12;
1577 }
1578
1579 if ((unsigned) bp1[i] + 0x1000 > 0x1fff)
1580 return 1;
1581
1582 refl[i] = bp1[i];
1583
1584 FFSWAP(int *, bp1, bp2);
1585 }
1586 return 0;
1587 }
1588
1589 /**
1590 * Evaluate the LPC filter coefficients from the reflection coefficients.
1591 * Does the inverse of the ff_eval_refl() function.
1592 */
ff_eval_coefs(int * coefs,const int * refl)1593 void ff_eval_coefs(int *coefs, const int *refl)
1594 {
1595 int buffer[LPC_ORDER];
1596 int *b1 = buffer;
1597 int *b2 = coefs;
1598 int i, j;
1599
1600 for (i=0; i < LPC_ORDER; i++) {
1601 b1[i] = refl[i] * 16;
1602
1603 for (j=0; j < i; j++)
1604 b1[j] = ((int)(refl[i] * (unsigned)b2[i-j-1]) >> 12) + b2[j];
1605
1606 FFSWAP(int *, b1, b2);
1607 }
1608
1609 for (i=0; i < LPC_ORDER; i++)
1610 coefs[i] >>= 4;
1611 }
1612
ff_int_to_int16(int16_t * out,const int * inp)1613 void ff_int_to_int16(int16_t *out, const int *inp)
1614 {
1615 int i;
1616
1617 for (i = 0; i < LPC_ORDER; i++)
1618 *out++ = *inp++;
1619 }
1620
1621 /**
1622 * Evaluate sqrt(x << 24). x must fit in 20 bits. This value is evaluated in an
1623 * odd way to make the output identical to the binary decoder.
1624 */
ff_t_sqrt(unsigned int x)1625 int ff_t_sqrt(unsigned int x)
1626 {
1627 int s = 2;
1628 while (x > 0xfff) {
1629 s++;
1630 x >>= 2;
1631 }
1632
1633 return ff_sqrt(x << 20) << s;
1634 }
1635
ff_rms(const int * data)1636 unsigned int ff_rms(const int *data)
1637 {
1638 int i;
1639 unsigned int res = 0x10000;
1640 int b = LPC_ORDER;
1641
1642 for (i = 0; i < LPC_ORDER; i++) {
1643 res = (((0x1000000 - data[i]*data[i]) >> 12) * res) >> 12;
1644
1645 if (res == 0)
1646 return 0;
1647
1648 while (res <= 0x3fff) {
1649 b++;
1650 res <<= 2;
1651 }
1652 }
1653
1654 return ff_t_sqrt(res) >> b;
1655 }
1656
ff_interp(RA144Context * ractx,int16_t * out,int a,int copyold,int energy)1657 int ff_interp(RA144Context *ractx, int16_t *out, int a, int copyold, int energy)
1658 {
1659 int work[LPC_ORDER];
1660 int b = NBLOCKS - a;
1661 int i;
1662
1663 // Interpolate block coefficients from the this frame's forth block and
1664 // last frame's forth block.
1665 for (i = 0; i < LPC_ORDER; i++)
1666 out[i] = (a * ractx->lpc_coef[0][i] + b * ractx->lpc_coef[1][i])>> 2;
1667
1668 if (ff_eval_refl(work, out, ractx->avctx)) {
1669 // The interpolated coefficients are unstable, copy either new or old
1670 // coefficients.
1671 ff_int_to_int16(out, ractx->lpc_coef[copyold]);
1672 return ff_rescale_rms(ractx->lpc_refl_rms[copyold], energy);
1673 } else {
1674 return ff_rescale_rms(ff_rms(work), energy);
1675 }
1676 }
1677
ff_rescale_rms(unsigned int rms,unsigned int energy)1678 unsigned int ff_rescale_rms(unsigned int rms, unsigned int energy)
1679 {
1680 return (rms * energy) >> 10;
1681 }
1682
1683 /** inverse root mean square */
ff_irms(AudioDSPContext * adsp,const int16_t * data)1684 int ff_irms(AudioDSPContext *adsp, const int16_t *data)
1685 {
1686 unsigned int sum = adsp->scalarproduct_int16(data, data, BLOCKSIZE);
1687
1688 if (sum == 0)
1689 return 0; /* OOPS - division by zero */
1690
1691 return 0x20000000 / (ff_t_sqrt(sum) >> 8);
1692 }
1693
ff_subblock_synthesis(RA144Context * ractx,const int16_t * lpc_coefs,int cba_idx,int cb1_idx,int cb2_idx,int gval,int gain)1694 void ff_subblock_synthesis(RA144Context *ractx, const int16_t *lpc_coefs,
1695 int cba_idx, int cb1_idx, int cb2_idx,
1696 int gval, int gain)
1697 {
1698 int16_t *block;
1699 int m[3];
1700
1701 if (cba_idx) {
1702 cba_idx += BLOCKSIZE/2 - 1;
1703 ff_copy_and_dup(ractx->buffer_a, ractx->adapt_cb, cba_idx);
1704 m[0] = (ff_irms(&ractx->adsp, ractx->buffer_a) * (unsigned)gval) >> 12;
1705 } else {
1706 m[0] = 0;
1707 }
1708 m[1] = (ff_cb1_base[cb1_idx] * gval) >> 8;
1709 m[2] = (ff_cb2_base[cb2_idx] * gval) >> 8;
1710 memmove(ractx->adapt_cb, ractx->adapt_cb + BLOCKSIZE,
1711 (BUFFERSIZE - BLOCKSIZE) * sizeof(*ractx->adapt_cb));
1712
1713 block = ractx->adapt_cb + BUFFERSIZE - BLOCKSIZE;
1714
1715 add_wav(block, gain, cba_idx, m, cba_idx? ractx->buffer_a: NULL,
1716 ff_cb1_vects[cb1_idx], ff_cb2_vects[cb2_idx]);
1717
1718 memcpy(ractx->curr_sblock, ractx->curr_sblock + BLOCKSIZE,
1719 LPC_ORDER*sizeof(*ractx->curr_sblock));
1720
1721 if (ff_celp_lp_synthesis_filter(ractx->curr_sblock + LPC_ORDER, lpc_coefs,
1722 block, BLOCKSIZE, LPC_ORDER, 1, 0, 0xfff))
1723 memset(ractx->curr_sblock, 0, (LPC_ORDER+BLOCKSIZE)*sizeof(*ractx->curr_sblock));
1724 }
1725