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exchange if() and for() in the MT_FIELD case

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18 cpu cycles faster for matrixbench

Originally committed as revision 9863 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Michael Niedermayer 18 years ago
parent f4fbcd33d9
commit 04b502fa36
1 changed files with 12 additions and 7 deletions
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  1. 19
      libavcodec/mpeg12.c

19
libavcodec/mpeg12.c
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@ -418,11 +418,11 @@ static int mpeg_decode_mb(MpegEncContext *s,
break;
case MT_FIELD:
s->mv_type = MV_TYPE_FIELD;
for(i=0;i<2;i++) {
if (USES_LIST(mb_type, i)) {
s->mv_dir |= (MV_DIR_FORWARD >> i);
if (s->picture_structure == PICT_FRAME) {
mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
if (s->picture_structure == PICT_FRAME) {
mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
for(i=0;i<2;i++) {
if (USES_LIST(mb_type, i)) {
s->mv_dir |= (MV_DIR_FORWARD >> i);
for(j=0;j<2;j++) {
s->field_select[i][j] = get_bits1(&s->gb);
val = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
@ -436,8 +436,13 @@ static int mpeg_decode_mb(MpegEncContext *s,
s->mv[i][j][1] = val;
dprintf(s->avctx, "fmy=%d\n", val);
}
} else {
mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
}
}
} else {
mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
for(i=0;i<2;i++) {
if (USES_LIST(mb_type, i)) {
s->mv_dir |= (MV_DIR_FORWARD >> i);
s->field_select[i][0] = get_bits1(&s->gb);
for(k=0;k<2;k++) {
val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],

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