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s->target_i and global are in dB but s->target_tp and true_peak are 

linear. Instead of mixing these in the calculations, convert the former
first to have all following calculations in the same unit.

Signed-off-by: Kyle Swanson <k@ylo.ph>
This commit is contained in:
Sebastian Dröge 2020-05-01 20:52:00 -07:00 committed by Kyle Swanson
parent 9ce7de9038
commit ed3da72583
1 changed files with 2 additions and 3 deletions
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5
libavfilter/af_loudnorm.c
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@ -453,10 +453,9 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
true_peak = tmp;
}
offset = s->target_i - global;
offset_tp = true_peak + offset;
offset = pow(10., (s->target_i - global) / 20.);
offset_tp = true_peak * offset;
s->offset = offset_tp < s->target_tp ? offset : s->target_tp - true_peak;
s->offset = pow(10., s->offset / 20.);
s->frame_type = LINEAR_MODE;
}