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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-06-05 20:00:38 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:54:52 +0200 |
| commit | 5498836d7da25342b0595e4908a529d169a22fb9 (patch) | |
| tree | c91fa54f9928d65665001ddd170c3da0ee65cf28 /libavfilter | |
| parent | 5625dc1f3234020cddf3e7217ecc455249f3f647 (diff) | |
| download | ffmpeg-5498836d7da25342b0595e4908a529d169a22fb9.tar.gz | |
avfilter/vf_dctdnoiz: Check threads
Fixes: floating point division by 0
Fixes: Ticket 8269
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4a3917c02c428b11128ac3d4a01b780ea44aa53c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavfilter')
| -rw-r--r-- | libavfilter/vf_dctdnoiz.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavfilter/vf_dctdnoiz.c b/libavfilter/vf_dctdnoiz.c index cdbe5f853f..3fbea473ed 100644 --- a/libavfilter/vf_dctdnoiz.c +++ b/libavfilter/vf_dctdnoiz.c @@ -563,6 +563,9 @@ static int config_input(AVFilterLink *inlink) inlink->h - s->pr_height); max_slice_h = s->pr_height / ((s->bsize - 1) * 2); + if (max_slice_h == 0) + return AVERROR(EINVAL); + s->nb_threads = FFMIN3(MAX_THREADS, ff_filter_get_nb_threads(ctx), max_slice_h); av_log(ctx, AV_LOG_DEBUG, "threads: [max=%d hmax=%d user=%d] => %d\n", MAX_THREADS, max_slice_h, ff_filter_get_nb_threads(ctx), s->nb_threads); |