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avfilter/af_dynaudnorm: do not clip audio 

Clipping can happen when smoothed gain is higher than maximum
allowed gain factor for current frame and peak value option is
set to enough low value.
This commit is contained in:
Paul B Mahol 2020-01-04 10:27:46 +01:00
parent 3c8da7b982
commit 6a1305e8b7
1 changed files with 1 additions and 0 deletions
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libavfilter/af_dynaudnorm.c
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@ -490,6 +490,7 @@ static void update_gain_history(DynamicAudioNormalizerContext *s, int channel,
double smoothed;
av_assert0(cqueue_size(s->gain_history_minimum[channel]) == s->filter_size);
smoothed = gaussian_filter(s, s->gain_history_minimum[channel]);
smoothed = FFMIN(smoothed, cqueue_peek(s->gain_history_minimum[channel], s->filter_size / 2));
cqueue_enqueue(s->gain_history_smoothed[channel], smoothed);