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+ (sign&1) -> -sign (1 instruction less)
author
Michael Niedermayer
<michaelni@gmx.at>
Fri, 31 Mar 2006 17:01:58 +0000
(17:01 +0000)
committer
Michael Niedermayer
<michaelni@gmx.at>
Fri, 31 Mar 2006 17:01:58 +0000
(17:01 +0000)
Originally committed as revision 5253 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavcodec/mjpeg.c
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diff --git
a/libavcodec/mjpeg.c
b/libavcodec/mjpeg.c
index
dbcbaed
..
8c90022
100644
(file)
--- a/
libavcodec/mjpeg.c
+++ b/
libavcodec/mjpeg.c
@@
-1291,7
+1291,7
@@
static int decode_block(MJpegDecodeContext *s, DCTELEM *block,
{
int cache=GET_CACHE(re,gb);
int sign=(~cache)>>31;
- level = (NEG_USR32(sign ^ cache,code) ^ sign)
+ (sign&1)
;
+ level = (NEG_USR32(sign ^ cache,code) ^ sign)
- sign
;
}
LAST_SKIP_BITS(re, &s->gb, code)