[FFmpeg-cvslog] avfilter/vf_dblur: fix artifacts

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Oct 23 16:59:38 2021 +0200| [a586ce0a21a29503e318479aa965fdb3eb5d98f7] | committer: Paul B Mahol

avfilter/vf_dblur: fix artifacts

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a586ce0a21a29503e318479aa965fdb3eb5d98f7
---

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

diff --git a/libavfilter/vf_dblur.c b/libavfilter/vf_dblur.c
index 8ea1229629..48c21c81b6 100644
--- a/libavfilter/vf_dblur.c
+++ b/libavfilter/vf_dblur.c
@@ -68,7 +68,7 @@ static int filter_horizontally(AVFilterContext *ctx, int width, int height)
 
     if (s->R3 > 0) {
         for (int y = 1; y < height - 1; y++) {
-            g = q * f(0, 0) + c * f(0, 0);
+            g = q * f(y, 0) + c * f(y, 0);
             for (int x = 0; x < width; x++) {
                 f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
                 g = q * f(y, x) + c * f(y - 1, x);
@@ -84,7 +84,7 @@ static int filter_horizontally(AVFilterContext *ctx, int width, int height)
         }
     } else {
         for (int y = 1; y < height - 1; y++) {
-            g = q * f(0, width - 1) + c * f(0, width - 1);
+            g = q * f(y, width - 1) + c * f(y, width - 1);
             for (int x = width - 1; x >= 0; x--) {
                 f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
                 g = q * f(y, x) + c * f(y - 1, x);