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avfilter/vf_waveform: abort early if there are no components to show

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This commit is contained in:
Paul B Mahol 2018-10-24 18:30:38 +02:00
parent d94d252731
commit 22d6d91649
1 changed files with 3 additions and 0 deletions
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3
libavfilter/vf_waveform.c
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@ -3025,6 +3025,9 @@ static int config_output(AVFilterLink *outlink)
comp++;
}
s->acomp = comp;
if (s->acomp == 0)
return AVERROR(EINVAL);
s->odesc = av_pix_fmt_desc_get(outlink->format);
s->dcomp = s->odesc->nb_components;