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avfilter/af_anlmdn: ignore too small values

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This commit is contained in:
Paul B Mahol 2019-01-09 21:00:16 +01:00
parent 8a1fc95840
commit ed3b64402e
1 changed files with 4 additions and 1 deletions
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5
libavfilter/af_anlmdn.c
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@ -168,7 +168,10 @@ static int filter_channel(AVFilterContext *ctx, void *arg, int ch, int nb_jobs)
float w;
av_assert0(distance >= 0.f);
w = expf(-distance * sw);
w = -distance * sw;
if (w < -11.f)
continue;
w = expf(w);
P += w * f[i - S + j + (j >= S)];
Q += w;
}