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| author | Michael Niedermayer <michaelni@gmx.at> | 2010-01-24 18:17:01 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2010-01-24 18:17:01 +0000 |
| commit | c78295ad1b528be05cc66f42af1e935c9ca87072 (patch) | |
| tree | 6348b261b249dd6136e8846105ded6197040c244 /libavcodec/h264_cavlc.c | |
| parent | f1d2b5728caa39172898043e05e2ade6f224056f (diff) | |
| download | ffmpeg-c78295ad1b528be05cc66f42af1e935c9ca87072.tar.gz | |
Optimize level_code computation, 6cpu cycles speedup.
Originally committed as revision 21428 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/h264_cavlc.c')
| -rw-r--r-- | libavcodec/h264_cavlc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/h264_cavlc.c b/libavcodec/h264_cavlc.c index c248137248..9440ce03eb 100644 --- a/libavcodec/h264_cavlc.c +++ b/libavcodec/h264_cavlc.c @@ -441,7 +441,7 @@ static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, in mask= -(level_code&1); level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask; }else{ - if(trailing_ones < 3) level_code += (level_code>>31)|1; + level_code += ((level_code>>31)|1) & -(trailing_ones < 3); suffix_length = 1; if(level_code + 3U > 6U) |