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Code Issues Releases Activity

Simplify if(), 3 cpu cycles faster in pentium dual.

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Originally committed as revision 16272 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-12-22 15:53:00 +00:00
parent 9daa4ceaa3
commit 127a20e3b8
1 changed files with 2 additions and 4 deletions
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6
libavcodec/h264.c
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@ -5314,10 +5314,8 @@ static inline void compute_mb_neighbors(H264Context *h)
const int left_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
const int curr_mb_frame_flag = !MB_FIELD;
const int bottom = (s->mb_y & 1);
if (bottom
? !curr_mb_frame_flag // bottom macroblock
: (!curr_mb_frame_flag && !top_mb_frame_flag) // top macroblock
) {
if (!curr_mb_frame_flag && (bottom || !top_mb_frame_flag)){
h->top_mb_xy -= s->mb_stride;
}
if (left_mb_frame_flag != curr_mb_frame_flag) {