From 4240e6a92117811509be3e5f360a44dde8618040 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Wed, 27 May 2015 02:46:45 +0200
Subject: avfilter/vf_hqdn3d: Initialize the whole LUT
With bps > 8 more than 255..255 are used
The initialized table content is left unchanged,
But it could also be adjusted for the slight difference of
the maximum
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavfilter/vf_hqdn3d.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavfilter/vf_hqdn3d.c b/libavfilter/vf_hqdn3d.c
index f862014a7d..ffc1b255f5 100644
--- a/libavfilter/vf_hqdn3d.c
+++ b/libavfilter/vf_hqdn3d.c
@@ -180,9 +180,9 @@ static int16_t *precalc_coefs(double dist25, int depth)
gamma = log(0.25) / log(1.0 - FFMIN(dist25,252.0)/255.0 - 0.00001);
- for (i = -255<<LUT_BITS; i <= 255<<LUT_BITS; i++) {
+ for (i = -256<<LUT_BITS; i < 256<<LUT_BITS; i++) {
double f = ((i<<(9-LUT_BITS)) + (1<<(8-LUT_BITS)) - 1) / 512.0; // midpoint of the bin
- simil = 1.0 - FFABS(f) / 255.0;
+ simil = FFMAX(0, 1.0 - FFABS(f) / 255.0);
C = pow(simil, gamma) * 256.0 * f;
ct[(256<<LUT_BITS)+i] = lrint(C);
}
--
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