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| author | Clément Bœsch <u@pkh.me> | 2015-02-08 14:27:51 +0100 |
|---|---|---|
| committer | Clément Bœsch <u@pkh.me> | 2015-02-12 20:21:56 +0100 |
| commit | 3429714f3d046f4e2235848a60b6f63bd084e01f (patch) | |
| tree | a3e2423414807f37c94dbf40e9530b57dbda0ce2 | |
| parent | ee902d3d2d78b1aed7d1c562d58128b450a54b02 (diff) | |
| download | ffmpeg-3429714f3d046f4e2235848a60b6f63bd084e01f.tar.gz | |
avfilter/dctdnoiz: fix slice_h computationn2.5.4
ceilf() can only work if the reminder of the division is not 0.
This fixes memory errors with for instance:
ffmpeg -f lavfi -i testsrc=s=800x500 -threads 3 -vf dctdnoiz -frames:v 1 -f null -
(cherry picked from commit eb7efaa9244720c5f2051d76d76faeec864eca7a)
| -rw-r--r-- | libavfilter/vf_dctdnoiz.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_dctdnoiz.c b/libavfilter/vf_dctdnoiz.c index a9017b1f1c..7246b01d0b 100644 --- a/libavfilter/vf_dctdnoiz.c +++ b/libavfilter/vf_dctdnoiz.c @@ -534,7 +534,7 @@ static int config_input(AVFilterLink *inlink) /* each slice will need to (pre & re)process the top and bottom block of * the previous one in in addition to its processing area. This is because * each pixel is averaged by all the surrounding blocks */ - slice_h = (int)ceilf(s->pr_height / s->nb_threads) + (s->bsize - 1) * 2; + slice_h = (int)ceilf(s->pr_height / (float)s->nb_threads) + (s->bsize - 1) * 2; for (i = 0; i < s->nb_threads; i++) { s->slices[i] = av_malloc_array(linesize, slice_h * sizeof(*s->slices[i])); if (!s->slices[i]) |