From ef7fdc8cff2c5cabd51eb4a47e6fc92f885b7352 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sat, 12 Jan 2013 17:34:21 +0100
Subject: [PATCH] swr: use a local variable for ns_coeffs
maybe a very tiny bit faster
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libswresample/dither_template.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libswresample/dither_template.c b/libswresample/dither_template.c
index 88d3260fc5a..8cf0c57681f 100644
--- a/libswresample/dither_template.c
+++ b/libswresample/dither_template.c
@@ -34,11 +34,12 @@ void RENAME(swri_noise_shaping)(SwrContext *s, AudioData *dsts, const AudioData
const DELEM *src = (const DELEM*)srcs->ch[ch];
DELEM *dst = (DELEM*)dsts->ch[ch];
float *ns_errors = s->dither.ns_errors[ch];
+ const float *ns_coeffs = s->dither.ns_coeffs;
pos = s->dither.ns_pos;
for (i=0; i<count; i++) {
double d1, d = src[i]*S_1;
for(j=0; j<taps; j++)
- d -= s->dither.ns_coeffs[j] * ns_errors[pos + j];
+ d -= ns_coeffs[j] * ns_errors[pos + j];
pos = pos ? pos - 1 : taps - 1;
d1 = rint(d + noise[i]);
ns_errors[pos + taps] = ns_errors[pos] = d1 - d;
--
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