From bc2e39c4cc35e8b08ca2ba45496ab3048ae7a426 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20B=C5=93sch?= <u@pkh.me>
Date: Wed, 14 May 2014 07:47:21 +0200
Subject: [PATCH] avfilter/lut3d: move the scale calc out of the inner loop.
---
libavfilter/vf_lut3d.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavfilter/vf_lut3d.c b/libavfilter/vf_lut3d.c
index 7b2f83f3c24..7c3a7dac152 100644
--- a/libavfilter/vf_lut3d.c
+++ b/libavfilter/vf_lut3d.c
@@ -216,12 +216,12 @@ static int interp_##nbits##_##name(AVFilterContext *ctx, void *arg, int jobnr, i
const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \
uint8_t *dstrow = out->data[0] + slice_start * out->linesize[0]; \
const uint8_t *srcrow = in ->data[0] + slice_start * in ->linesize[0]; \
+ const float scale = (1. / ((1<<nbits) - 1)) * (lut3d->lutsize - 1); \
\
for (y = slice_start; y < slice_end; y++) { \
uint##nbits##_t *dst = (uint##nbits##_t *)dstrow; \
const uint##nbits##_t *src = (const uint##nbits##_t *)srcrow; \
for (x = 0; x < in->width * step; x += step) { \
- const float scale = (1. / ((1<<nbits) - 1)) * (lut3d->lutsize - 1); \
const struct rgbvec scaled_rgb = {src[x + r] * scale, \
src[x + g] * scale, \
src[x + b] * scale}; \
--
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