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avfilter/af_astats: fix possible crash because of undefined float to integer rounding 

Fixes ticket #9049.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2021-01-11 00:12:39 +01:00
parent 16766bf8a8
commit c8e1e56509
1 changed files with 2 additions and 2 deletions
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4
libavfilter/af_astats.c
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@ -329,11 +329,11 @@ static inline void update_stat(AudioStatsContext *s, ChannelStats *p, double d,
drop = p->win_samples[p->win_pos];
p->win_samples[p->win_pos] = nd;
index = av_clip(FFABS(av_clipd(nd, -1.0, 1.0)) * HISTOGRAM_MAX, 0, HISTOGRAM_MAX);
index = av_clip(lrint(av_clipd(FFABS(nd), 0.0, 1.0) * HISTOGRAM_MAX), 0, HISTOGRAM_MAX);
p->max_index = FFMAX(p->max_index, index);
p->histogram[index]++;
if (!isnan(p->noise_floor))
p->histogram[av_clip(FFABS(drop) * HISTOGRAM_MAX, 0, HISTOGRAM_MAX)]--;
p->histogram[av_clip(lrint(av_clipd(FFABS(drop), 0.0, 1.0) * HISTOGRAM_MAX), 0, HISTOGRAM_MAX)]--;
p->win_pos++;
while (p->histogram[p->max_index] == 0)