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43 lines
1.2 KiB
43 lines
1.2 KiB
/* |
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* Copyright (c) 2009 Baptiste Coudurier <baptiste.coudurier@gmail.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include "timer.h" |
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#include "random_seed.h" |
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uint32_t ff_random_get_seed(void) |
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{ |
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uint32_t seed; |
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int fd; |
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if ((fd = open("/dev/random", O_RDONLY)) == -1) |
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fd = open("/dev/urandom", O_RDONLY); |
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if (fd != -1){ |
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read(fd, &seed, 4); |
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close(fd); |
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return seed; |
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} |
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#ifdef AV_READ_TIME |
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seed = AV_READ_TIME(); |
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#endif |
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// XXX what to do ? |
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return seed; |
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}
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