FFmpeg
aandcttab.c
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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 };
const uint16_t ff_aanscales[64]
Definition: aandcttab.c:26
const uint16_t ff_inv_aanscales[64]
Definition: aandcttab.c:38