[FFmpeg-cvslog] avfilter/vf_cover_rect: Handle the case where the cover rectangle is as large as the input

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue May 12 20:19:47 2015 +0200| [0d05406482950b7c129eccfefe0daa3d6d47e292] | committer: Michael Niedermayer

avfilter/vf_cover_rect: Handle the case where the cover rectangle is as large as the input

Fixes division by 0
Fixes CID1297575

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0d05406482950b7c129eccfefe0daa3d6d47e292
---

 libavfilter/vf_cover_rect.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/vf_cover_rect.c b/libavfilter/vf_cover_rect.c
index d12807a..c2020bb 100644
--- a/libavfilter/vf_cover_rect.c
+++ b/libavfilter/vf_cover_rect.c
@@ -132,7 +132,7 @@ static void blur(CoverContext *cover, AVFrame *in, int offx, int offy)
                     s += data[x + h*stride] * scale;
                     c += scale;
                 }
-                data[x + y*stride] = (s + (c>>1)) / c;
+                data[x + y*stride] = c ? (s + (c>>1)) / c : 0;
             }
         }
     }