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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-06-05 20:00:38 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-09 22:02:20 +0200 |
| commit | e8eeabea9984657baad4e8d16f2675e356892dff (patch) | |
| tree | 9dd6ed73bc2eb1c39328f986fbe27b3a2c717e6e | |
| parent | 366e80698e7976ab0d2974d64bfc2d8d4ff47c87 (diff) | |
| download | ffmpeg-e8eeabea9984657baad4e8d16f2675e356892dff.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 62763bf349..90212ff936 100644 --- a/libavfilter/vf_dctdnoiz.c +++ b/libavfilter/vf_dctdnoiz.c @@ -507,6 +507,9 @@ 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); |