1 /*

     2  * Copyright (c) 2009 Baptiste Coudurier <baptiste.coudurier@gmail.com>

     3  *

     4  * This file is part of Libav.

     5  *

     6  * Libav 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  * Libav 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 Libav; 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 random data.

    32  *

    33  * This function can be called repeatedly to generate more random bits

    34  * as needed. It is generally quite slow, and usually used to seed a

    35  * PRNG.  As it uses /dev/urandom and /dev/random, the quality of the

    36  * returned random data depends on the platform.

    37  */

    38 uint32_t av_get_random_seed(void);

    39 

    40 /**

    41  * @}

    42  */

    43 

    44 #endif /* AVUTIL_RANDOM_SEED_H */