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VP8: fix bug in prefetch

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Motion vectors in VP8 are qpel, not fullpel.

Originally committed as revision 24707 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Jason Garrett-Glaser 2010-08-05 20:03:54 +00:00
parent fa2d5d54b9
commit 7e13022a4d
1 changed files with 2 additions and 2 deletions
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4
libavcodec/vp8.c
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@ -1155,8 +1155,8 @@ static av_always_inline void prefetch_motion(VP8Context *s, VP8Macroblock *mb, i
/* Don't prefetch refs that haven't been used very often this frame. */
if (s->ref_count[ref-1] > (mb_xy >> 5)) {
int x_off = mb_x << 4, y_off = mb_y << 4;
int mx = mb->mv.x + x_off + 8;
int my = mb->mv.y + y_off;
int mx = (mb->mv.x>>2) + x_off + 8;
int my = (mb->mv.y>>2) + y_off;
uint8_t **src= s->framep[ref]->data;
int off= mx + (my + (mb_x&3)*4)*s->linesize + 64;
s->dsp.prefetch(src[0]+off, s->linesize, 4);