[FFmpeg-cvslog] VC1: simplify a calculation in a loop.

Ronald S. Bultje git
Fri Feb 18 20:38:21 CET 2011


ffmpeg | branch: master | Ronald S. Bultje <rsbultje at gmail.com> | Thu Feb 17 12:14:12 2011 -0500| [6c0d9369d881b143628fdc24b105a4a2c60d67c2] | committer: Michael Niedermayer

VC1: simplify a calculation in a loop.
(cherry picked from commit 0b16cdc3fa1d73056649abf43288be0a7624fdcc)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6c0d9369d881b143628fdc24b105a4a2c60d67c2
---

 libavcodec/vc1dec.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 169797c..e254d1b 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -199,7 +199,7 @@ static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
         for(k = 0; k < 6; k++)
             for(j = 0; j < 8; j++)
                 for(i = 0; i < 8; i++)
-                    block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
+                    block[k][i + j*8] = (block[k][i + j*8] - 64) << 1;
 
     }
     ys = v->s.current_picture.linesize[0];




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