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avutil/random_seed: Reduce the time needed on systems with very low precission clock() 

This should fix issues on BSD
CLOCKS_PER_SEC is 128 on BSD while SUSv2 requires it to be a million

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c4152fc42e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-12-24 14:26:41 +01:00
parent f0862b18c5
commit 8c3e90f5ed
1 changed files with 1 additions and 1 deletions
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2
libavutil/random_seed.c
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@ -87,7 +87,7 @@ static uint32_t get_generic_seed(void)
for (;;) { for (;;) {
clock_t t = clock(); clock_t t = clock();
if (last_t + 2*last_td + 1 >= t) { if (last_t + 2*last_td + (CLOCKS_PER_SEC > 1000) >= t) {
last_td = t - last_t; last_td = t - last_t;
buffer[i & 511] = 1664525*buffer[i & 511] + 1013904223 + (last_td % 3294638521U); buffer[i & 511] = 1664525*buffer[i & 511] + 1013904223 + (last_td % 3294638521U);
} else { } else {