From ec3686e8890f3d0bc7e6a9a42886f28034cbbb07 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 22 Dec 2008 17:14:13 +0000
Subject: [PATCH] Simplify decode_cabac_mb_ref() a little bit, 2 cpu cycles
faster on pentium dual.
Originally committed as revision 16279 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/h264.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 08830184607..a170177fa4a 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -4991,10 +4991,7 @@ static int decode_cabac_mb_ref( H264Context *h, int list, int n ) {
while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) {
ref++;
- if( ctx < 4 )
- ctx = 4;
- else
- ctx = 5;
+ ctx = (ctx>>2)+4;
if(ref >= 32 /*h->ref_list[list]*/){
return -1;
}
--
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