Split global .gitignore file into per-directory files
[libav.git] / libavcodec / tests / rangecoder.c
1 /*
2 * This file is part of Libav.
3 *
4 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <stdint.h>
20 #include <string.h>
21
22 #include "libavutil/lfg.h"
23 #include "libavutil/log.h"
24
25 #include "libavcodec/rangecoder.h"
26
27 #define SIZE 10240
28
29 int main(void)
30 {
31 RangeCoder c;
32 uint8_t b[9 * SIZE];
33 uint8_t r[9 * SIZE];
34 int i;
35 uint8_t state[10];
36 AVLFG prng;
37
38 av_lfg_init(&prng, 1);
39
40 ff_init_range_encoder(&c, b, SIZE);
41 ff_build_rac_states(&c, 0.05 * (1LL << 32), 128 + 64 + 32 + 16);
42
43 memset(state, 128, sizeof(state));
44
45 for (i = 0; i < SIZE; i++)
46 r[i] = av_lfg_get(&prng) % 7;
47
48 for (i = 0; i < SIZE; i++)
49 put_rac(&c, state, r[i] & 1);
50
51 ff_rac_terminate(&c);
52
53 ff_init_range_decoder(&c, b, SIZE);
54
55 memset(state, 128, sizeof(state));
56
57 for (i = 0; i < SIZE; i++)
58 if ((r[i] & 1) != get_rac(&c, state)) {
59 av_log(NULL, AV_LOG_ERROR, "rac failure at %d\n", i);
60 return 1;
61 }
62
63 return 0;
64 }