blob: 0462a048e048317b0150aa3b800171a96a668e45
1 | /* |
2 | * Copyright (c) 2009 Baptiste Coudurier <baptiste.coudurier@gmail.com> |
3 | * |
4 | * This file is part of FFmpeg. |
5 | * |
6 | * FFmpeg is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Lesser General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2.1 of the License, or (at your option) any later version. |
10 | * |
11 | * FFmpeg is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Lesser General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Lesser General Public |
17 | * License along with FFmpeg; if not, write to the Free Software |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 | */ |
20 | |
21 | #ifndef AVUTIL_RANDOM_SEED_H |
22 | #define AVUTIL_RANDOM_SEED_H |
23 | |
24 | #include <stdint.h> |
25 | /** |
26 | * @addtogroup lavu_crypto |
27 | * @{ |
28 | */ |
29 | |
30 | /** |
31 | * Get a seed to use in conjunction with random functions. |
32 | * This function tries to provide a good seed at a best effort bases. |
33 | * Its possible to call this function multiple times if more bits are needed. |
34 | * It can be quite slow, which is why it should only be used as seed for a faster |
35 | * PRNG. The quality of the seed depends on the platform. |
36 | */ |
37 | uint32_t av_get_random_seed(void); |
38 | |
39 | /** |
40 | * @} |
41 | */ |
42 | |
43 | #endif /* AVUTIL_RANDOM_SEED_H */ |
44 |