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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-04-27 12:23:40 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-04-27 12:23:53 +0200 |
| commit | dcfc12e86acbacbf50ee87d8e66ec44584d119f4 (patch) | |
| tree | 6f692b78f28435e9febbf70a826443e414d67d41 | |
| parent | e5474f5c48dc4a051bf9d31966a86908cb04fa63 (diff) | |
| download | ffmpeg-dcfc12e86acbacbf50ee87d8e66ec44584d119f4.tar.gz | |
swr-test: simplify prng code
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libswresample/swresample_test.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/libswresample/swresample_test.c b/libswresample/swresample_test.c index d475e56528..ddba2d5c20 100644 --- a/libswresample/swresample_test.c +++ b/libswresample/swresample_test.c @@ -145,10 +145,11 @@ static void audiogen(void *data, enum AVSampleFormat sample_fmt, double tabf1[SWR_CH_MAX]; double tabf2[SWR_CH_MAX]; double taba[SWR_CH_MAX]; - unsigned static seed; + unsigned static rnd; #define PUT_SAMPLE set(data, ch, k, channels, sample_fmt, v); -#define dbl_rand(x) ((seed = seed * 1664525 + 1013904223)*2.0 / (double)UINT_MAX - 1) +#define uint_rand(x) (x = x * 1664525 + 1013904223) +#define dbl_rand(x) (uint_rand(x)*2.0 / (double)UINT_MAX - 1) k = 0; /* 1 second of single freq sinus at 1000 Hz */ @@ -187,8 +188,8 @@ static void audiogen(void *data, enum AVSampleFormat sample_fmt, /* 1 second of unrelated ramps for each channel */ for (ch = 0; ch < channels; ch++) { taba[ch] = 0; - tabf1[ch] = 100 + (seed = seed * 1664525 + 1013904223) % 5000; - tabf2[ch] = 100 + (seed = seed * 1664525 + 1013904223) % 5000; + tabf1[ch] = 100 + uint_rand(rnd) % 5000; + tabf2[ch] = 100 + uint_rand(rnd) % 5000; } for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) { for (ch = 0; ch < channels; ch++) { |