From 5983d1c480b589e97770a11237a47d93b2a0e804 Mon Sep 17 00:00:00 2001
From: Vitor Sessak <vitor1001@gmail.com>
Date: Mon, 23 Jun 2008 19:59:42 +0000
Subject: [PATCH] Simplify rotate_buffer()

Originally committed as revision 13914 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/ra144.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/libavcodec/ra144.c b/libavcodec/ra144.c
index 7059c50306..e6895cec44 100644
--- a/libavcodec/ra144.c
+++ b/libavcodec/ra144.c
@@ -97,14 +97,13 @@ static void eval_coefs(const int *refl, int *coefs)
 /* rotate block */
 static void rotate_block(const int16_t *source, int16_t *target, int offset)
 {
-    int i=0, k=0;
     source += BUFFERSIZE - offset;
 
-    while (i<BLOCKSIZE) {
-        target[i++] = source[k++];
-
-        if (k == offset)
-            k = 0;
+    if (offset > BLOCKSIZE) {
+        memcpy(target, source, BLOCKSIZE*sizeof(*target));
+    } else {
+        memcpy(target, source, offset*sizeof(*target));
+        memcpy(target + offset, source, (BLOCKSIZE - offset)*sizeof(*target));
     }
 }