From: alexc <alexc@9553f0bf-9b14-0410-a0b8-cfaf0461ba5b>
Date: Thu, 26 Feb 2009 01:50:00 +0000 (+0000)
Subject: Use const to better allow the compiler to optimize AAC independent coupling.
X-Git-Url: http://rtime.felk.cvut.cz/gitweb/frescor/ffmpeg.git/commitdiff_plain/fb4ea1d04f251514748ebd1837313136872f0f81

Use const to better allow the compiler to optimize AAC independent coupling.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@17598 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b
---

diff --git a/libavcodec/aac.c b/libavcodec/aac.c
index 311dd69cc..ca21e0209 100644
--- a/libavcodec/aac.c
+++ b/libavcodec/aac.c
@@ -1456,8 +1456,13 @@ static void apply_dependent_coupling(AACContext * ac, SingleChannelElement * tar
  */
 static void apply_independent_coupling(AACContext * ac, SingleChannelElement * target, ChannelElement * cce, int index) {
     int i;
+    const float gain = cce->coup.gain[index][0];
+    const float bias = ac->add_bias;
+    const float* src = cce->ch[0].ret;
+    float* dest = target->ret;
+
     for (i = 0; i < 1024; i++)
-        target->ret[i] += cce->coup.gain[index][0] * (cce->ch[0].ret[i] - ac->add_bias);
+        dest[i] += gain * (src[i] - bias);
 }
 
 /**