[FFmpeg-cvslog] avfilter/window_func: clarify intention in dolph window calculation
Paul B Mahol
git at videolan.org
Mon Sep 16 12:49:31 EEST 2019
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Mon Sep 16 10:57:09 2019 +0200| [fa045c3ce288e3ffb6292cb8c0a1b21481de6974] | committer: Paul B Mahol
avfilter/window_func: clarify intention in dolph window calculation
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fa045c3ce288e3ffb6292cb8c0a1b21481de6974
---
libavfilter/window_func.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavfilter/window_func.h b/libavfilter/window_func.h
index 1de8f1fbdb..494c5b1c66 100644
--- a/libavfilter/window_func.h
+++ b/libavfilter/window_func.h
@@ -133,7 +133,7 @@ static inline void generate_window_func(float *lut, int N, int win_func,
for (c = 1 - 1 / (b*b), n = (N-1) / 2; n >= 0; --n) {
for (sum = !n, b = t = j = 1; j <= n && sum != t; b *= (n-j) * (1./j), ++j)
t = sum, sum += (b *= c * (N - n - j) * (1./j));
- sum /= (N - 1 - n), sum /= (norm = norm ? norm : sum);
+ sum /= (N - 1 - n), norm = norm ? norm : sum, sum /= norm;
lut[n] = sum;
lut[N - 1 - n] = sum;
}
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