avfilter/vf_noise: Use a separate seed for each plane

This should reduce the correlation between planes Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago · 4f1a252fd3
parent ed3efbcd0c
commit 4f1a252fd3
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/vf_noise.c
+++ b/libavfilter/vf_noise.c
@ -110,7 +110,7 @@ static av_cold int init_noise(NoiseContext *n, int comp)
    if (!noise)
        return AVERROR(ENOMEM);

-    av_lfg_init(&fp->lfg, fp->seed);
+    av_lfg_init(&fp->lfg, fp->seed + comp*31415U);

    for (i = 0, j = 0; i < MAX_NOISE; i++, j++) {
        if (flags & NOISE_UNIFORM) {