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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-06-05 20:00:38 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-06 13:54:16 +0200 |
| commit | f747fd6d6f4f7fcc3d3613c23cc25fe2a2316b48 (patch) | |
| tree | 5e6b10c6500e5342d82543569bfa1c5e3b078e7b | |
| parent | 879ac3418eb946a2e7c82777977c29f553549120 (diff) | |
| download | ffmpeg-f747fd6d6f4f7fcc3d3613c23cc25fe2a2316b48.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>
| -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); |