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Negate 2 more variables, 1 cpu cycle faster on pentium dual. 

Originally committed as revision 16276 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-12-22 16:20:13 +00:00
parent 03a035e059
commit 1952ac3713
1 changed files with 5 additions and 5 deletions
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10
libavcodec/h264.c
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@ -5298,15 +5298,15 @@ static inline void compute_mb_neighbors(H264Context *h)
if(FRAME_MBAFF){
const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride;
const int top_pair_xy = pair_xy - s->mb_stride;
const int top_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
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 top_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
const int curr_mb_field_flag = MB_FIELD;
const int bottom = (s->mb_y & 1);
if (!curr_mb_frame_flag && (bottom || !top_mb_frame_flag)){
if (curr_mb_field_flag && (bottom || top_mb_field_flag)){
h->top_mb_xy -= s->mb_stride;
}
if (left_mb_frame_flag != curr_mb_frame_flag) {
if (!left_mb_field_flag == curr_mb_field_flag) {
h->left_mb_xy[0] = pair_xy - 1;
}
} else if (FIELD_PICTURE) {