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  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.