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author | Paul B Mahol <onemda@gmail.com> | 2019-10-13 23:28:16 +0200 |
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committer | Paul B Mahol <onemda@gmail.com> | 2019-10-13 23:29:39 +0200 |
commit | 19587c9332f5be4f6bc6d7b2b8ef3fd21dfeaa01 (patch) | |
tree | b326b3647a1f34c2efc12bb806cb60cd84c635f3 | |
parent | 07050d7bdc32d82e53ee5bb727f5882323d00dba (diff) | |
download | ffmpeg-streaming-19587c9332f5be4f6bc6d7b2b8ef3fd21dfeaa01.zip ffmpeg-streaming-19587c9332f5be4f6bc6d7b2b8ef3fd21dfeaa01.tar.gz |
avfilter/vf_lenscorrection: fix division by zero
Fixes #8265
-rw-r--r-- | libavfilter/vf_lenscorrection.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/libavfilter/vf_lenscorrection.c b/libavfilter/vf_lenscorrection.c index b5400a2..ac3c490 100644 --- a/libavfilter/vf_lenscorrection.c +++ b/libavfilter/vf_lenscorrection.c @@ -155,10 +155,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in) for (plane = 0; plane < rect->nb_planes; ++plane) { int hsub = plane == 1 || plane == 2 ? rect->hsub : 0; int vsub = plane == 1 || plane == 2 ? rect->vsub : 0; - int hdiv = 1 << hsub; - int vdiv = 1 << vsub; - int w = rect->width / hdiv; - int h = rect->height / vdiv; + int w = AV_CEIL_RSHIFT(rect->width, hsub); + int h = AV_CEIL_RSHIFT(rect->height, vsub); int xcenter = rect->cx * w; int ycenter = rect->cy * h; int k1 = rect->k1 * (1<<24); |