From c31a25e79c1fa034a1a528d93796e2fc98a6adda Mon Sep 17 00:00:00 2001
From: Jason Garrett-Glaser <darkshikari@gmail.com>
Date: Tue, 22 Jun 2010 21:12:42 +0000
Subject: [PATCH] Use right-shift instead of division by two.
Patch by Dark Shikari
Originally committed as revision 23723 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/mpegvideo_common.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/libavcodec/mpegvideo_common.h b/libavcodec/mpegvideo_common.h
index 73106664f9..24cfa78849 100644
--- a/libavcodec/mpegvideo_common.h
+++ b/libavcodec/mpegvideo_common.h
@@ -580,11 +580,11 @@ static inline void chroma_4mv_motion(MpegEncContext *s,
src_x = s->mb_x * 8 + mx;
src_y = s->mb_y * 8 + my;
- src_x = av_clip(src_x, -8, s->width/2);
- if (src_x == s->width/2)
+ src_x = av_clip(src_x, -8, (s->width >> 1));
+ if (src_x == (s->width >> 1))
dxy &= ~1;
- src_y = av_clip(src_y, -8, s->height/2);
- if (src_y == s->height/2)
+ src_y = av_clip(src_y, -8, (s->height >> 1));
+ if (src_y == (s->height >> 1))
dxy &= ~2;
offset = (src_y * (s->uvlinesize)) + src_x;