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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-02-22 22:25:01 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-02-23 23:44:38 +0100 |
| commit | 946de27d25645a2daa43ed3aa264fcead3c39379 (patch) | |
| tree | 4879b27d7e1297598bf3c18a9f2e35abea29b7c3 | |
| parent | 1b93244381af895c481d9de967a278d17262ecd0 (diff) | |
| download | ffmpeg-946de27d25645a2daa43ed3aa264fcead3c39379.tar.gz | |
random_seed: add selftest
Reviewed-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavutil/Makefile | 2 | ||||
| -rw-r--r-- | libavutil/random_seed.c | 26 |
2 files changed, 27 insertions, 1 deletions
diff --git a/libavutil/Makefile b/libavutil/Makefile index 6d78bd5528..23049f600f 100644 --- a/libavutil/Makefile +++ b/libavutil/Makefile @@ -83,7 +83,7 @@ OBJS-$(ARCH_X86) += x86/cpu.o TESTPROGS = adler32 aes avstring base64 cpu crc des eval file fifo lfg lls \ - md5 opt pca parseutils rational sha tree + md5 opt pca parseutils random_seed rational sha tree TESTPROGS-$(HAVE_LZO1X_999_COMPRESS) += lzo TOOLS = ffeval diff --git a/libavutil/random_seed.c b/libavutil/random_seed.c index 235028b5c5..6a8666cca6 100644 --- a/libavutil/random_seed.c +++ b/libavutil/random_seed.c @@ -80,3 +80,29 @@ uint32_t av_get_random_seed(void) return seed; return get_generic_seed(); } + +#ifdef TEST +#undef printf +#define N 256 +#include <stdio.h> + +int main(void) +{ + int i, j, retry; + uint32_t seeds[N]; + + for (retry=0; retry<3; retry++){ + for (i=0; i<N; i++){ + seeds[i] = av_get_random_seed(); + for (j=0; j<i; j++) + if (seeds[j] == seeds[i]) + goto retry; + } + printf("seeds OK\n"); + return 0; + retry:; + } + printf("FAIL at %d with %X\n", j, seeds[j]); + return 1; +} +#endif |