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fixing twice added offset bug, was triggered by 4mv + sub_cmp != mb_cmp

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bug was introduced in version 1.75 (2003-12-30)
this may have lead to a small drop in quality of the 4mv mode, but should have only affected the mbd=0 case

Originally committed as revision 2698 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-01-14 02:21:39 +00:00
parent b754978a3b
commit a75b43fd73
1 changed files with 2 additions and 2 deletions
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4
libavcodec/motion_est.c
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@ -846,7 +846,7 @@ static inline int h263_mv4_search(MpegEncContext *s, int mx, int my, int shift)
uint8_t *dest_y = s->me.scratchpad + offset; uint8_t *dest_y = s->me.scratchpad + offset;
if(s->quarter_sample){ if(s->quarter_sample){
uint8_t *ref= ref_data[0] + (mx4>>2) + (my4>>2)*stride + offset; uint8_t *ref= ref_data[0] + (mx4>>2) + (my4>>2)*stride;
dxy = ((my4 & 3) << 2) | (mx4 & 3); dxy = ((my4 & 3) << 2) | (mx4 & 3);
if(s->no_rounding) if(s->no_rounding)
@ -854,7 +854,7 @@ static inline int h263_mv4_search(MpegEncContext *s, int mx, int my, int shift)
else else
s->dsp.put_qpel_pixels_tab [1][dxy](dest_y , ref , stride); s->dsp.put_qpel_pixels_tab [1][dxy](dest_y , ref , stride);
}else{ }else{
uint8_t *ref= ref_data[0] + (mx4>>1) + (my4>>1)*stride + offset; uint8_t *ref= ref_data[0] + (mx4>>1) + (my4>>1)*stride;
dxy = ((my4 & 1) << 1) | (mx4 & 1); dxy = ((my4 & 1) << 1) | (mx4 & 1);
if(s->no_rounding) if(s->no_rounding)