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Code Issues Releases Activity

avfilter/dctdnoiz: fix slice_h computation

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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 -
This commit is contained in:
Clément Bœsch 2015-02-08 14:27:51 +01:00
parent 009a57b479
commit eb7efaa924
1 changed files with 1 additions and 1 deletions
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2
libavfilter/vf_dctdnoiz.c
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@ -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])