blob: 97013d2b527306919bbc19d1cad8f39d2be22d2b
1 | /* |
2 | * This file is part of FFmpeg. |
3 | * |
4 | * FFmpeg is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2.1 of the License, or (at your option) any later version. |
8 | * |
9 | * FFmpeg is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with FFmpeg; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
17 | */ |
18 | |
19 | /** |
20 | * @file |
21 | * AAN (Arai, Agui and Nakajima) (I)DCT tables |
22 | */ |
23 | |
24 | #include <stdint.h> |
25 | |
26 | const uint16_t ff_aanscales[64] = { |
27 | /* precomputed values scaled up by 14 bits */ |
28 | 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, |
29 | 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270, |
30 | 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906, |
31 | 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315, |
32 | 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, |
33 | 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552, |
34 | 8867 , 12299, 11585, 10426, 8867, 6967, 4799, 2446, |
35 | 4520 , 6270, 5906, 5315, 4520, 3552, 2446, 1247 |
36 | }; |
37 | |
38 | const uint16_t ff_inv_aanscales[64] = { |
39 | 4096, 2953, 3135, 3483, 4096, 5213, 7568, 14846, |
40 | 2953, 2129, 2260, 2511, 2953, 3759, 5457, 10703, |
41 | 3135, 2260, 2399, 2666, 3135, 3990, 5793, 11363, |
42 | 3483, 2511, 2666, 2962, 3483, 4433, 6436, 12625, |
43 | 4096, 2953, 3135, 3483, 4096, 5213, 7568, 14846, |
44 | 5213, 3759, 3990, 4433, 5213, 6635, 9633, 18895, |
45 | 7568, 5457, 5793, 6436, 7568, 9633, 13985, 27432, |
46 | 14846, 10703, 11363, 12625, 14846, 18895, 27432, 53809, |
47 | }; |
48 |