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comparison lib/libavutil/random_seed.h @ 2134:992d2e6f907d

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preparation for libavcodec
author zipi
date Tue, 31 Dec 2013 14:52:14 +0000
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2133:e378232bfd36 2134:992d2e6f907d
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 */