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avfilter/f_reverse: fix array overread

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Paul B Mahol 2023-12-21 15:25:02 +01:00
parent bdfe9e0cef
commit 6918e99907
1 changed files with 3 additions and 1 deletions
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4
libavfilter/f_reverse.c
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@ -266,7 +266,9 @@ static int areverse_request_frame(AVFilterLink *outlink)
AVFrame *out = s->frames[s->nb_frames - 1];
out->duration = s->duration[s->flush_idx];
out->pts = s->pts[s->flush_idx++] - s->nb_samples;
s->nb_samples += s->pts[s->flush_idx] - s->pts[s->flush_idx - 1] - out->nb_samples;
if (s->nb_frames > 1)
s->nb_samples += s->pts[s->flush_idx];
s->nb_samples -= s->pts[s->flush_idx - 1] + out->nb_samples;
if (av_sample_fmt_is_planar(out->format))
reverse_samples_planar(out);