From dcfc12e86acbacbf50ee87d8e66ec44584d119f4 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Fri, 27 Apr 2012 12:23:40 +0200
Subject: [PATCH] swr-test: simplify prng code
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libswresample/swresample_test.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/libswresample/swresample_test.c b/libswresample/swresample_test.c
index d475e565284..ddba2d5c204 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++) {
--
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