From d8e00c099731b8499a8c377469ac5796f5bd186c Mon Sep 17 00:00:00 2001
From: BERO <bero@geocities.co.jp>
Date: Wed, 14 May 2003 00:32:22 +0000
Subject: bitstream reader optimize patch by (BERO <bero at geocities dot co
 dot jp>)

Originally committed as revision 1871 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/mpeg12.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'libavcodec/mpeg12.c')

diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 3bbc843429..32d3057831 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -1223,9 +1223,7 @@ static inline int decode_dc(MpegEncContext *s, int component)
     if (code == 0) {
         diff = 0;
     } else {
-        diff = get_bits(&s->gb, code);
-        if ((diff & (1 << (code - 1))) == 0) 
-            diff = (-1 << code) | (diff + 1);
+        diff = get_xbits(&s->gb, code);
     }
     return diff;
 }
-- 
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