VC1: simplify a calculation in a loop.

(cherry picked from commit 0b16cdc3)

VC1: simplify a calculation in a loop.
(cherry picked from commit 0b16cdc3)
6c0d9369 · Ronald S. Bultje · Michael Niedermayer · 2739dc5d · 6c0d9369
Commit 6c0d9369 authored Feb 17, 2011 by Ronald S. Bultje Committed by Michael Niedermayer Feb 18, 2011
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vc1dec.c libavcodec/vc1dec.c +1 -1

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--- 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];