[FFmpeg-cvslog] avfilter/vf_atadenoise: fix mid calculation

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Fri Jan 22 18:18:38 2021 +0100| [3ce97d8ddd68ff7fddcc75ae1a9b29abcb5acad0] | committer: Paul B Mahol

avfilter/vf_atadenoise: fix mid calculation

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3ce97d8ddd68ff7fddcc75ae1a9b29abcb5acad0
---

 libavfilter/vf_atadenoise.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavfilter/vf_atadenoise.c b/libavfilter/vf_atadenoise.c
index b543665ebf..ccbda723f0 100644
--- a/libavfilter/vf_atadenoise.c
+++ b/libavfilter/vf_atadenoise.c
@@ -135,7 +135,7 @@ static av_cold int init(AVFilterContext *ctx)
         s->size |= 1;
     }
     s->radius = s->size / 2;
-    s->mid = s->radius + 1;
+    s->mid = s->radius;
 
     return 0;
 }
@@ -429,7 +429,7 @@ static int config_input(AVFilterLink *inlink)
     for (int p = 0; p < s->nb_planes; p++) {
         float sigma = s->radius * s->sigma[p];
 
-        s->weights[p][s->mid] = 1.f;
+        s->weights[p][s->radius] = 1.f;
         for (int n = 1; n <= s->radius; n++) {
             s->weights[p][s->radius + n] =
             s->weights[p][s->radius - n] = expf(-0.5 * (n + 1) * (n + 1) / (sigma * sigma));