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b frame segfault fix 

Originally committed as revision 1400 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-01-06 01:20:37 +00:00
parent b17d099db4
commit 4a711c33cc
1 changed files with 4 additions and 4 deletions
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8
libavcodec/motion_est.c
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@ -1309,15 +1309,15 @@ static inline int direct_search(MpegEncContext * s,
min= FFMIN(s->me.direct_basis_mv[i][0], s->me.direct_basis_mv[i][0] - s->me.co_located_mv[i][0])>>shift;
max+= (2*mb_x + (i& 1))*8 - 1; // +-1 is for the simpler rounding
min+= (2*mb_x + (i& 1))*8 + 1;
if(max >= s->width) xmax= s->width - max - 1;
if(min < -16 ) xmin= - 32 - min;
xmax= FFMIN(xmax, s->width - max);
xmin= FFMAX(xmin, - 16 - min);
max= FFMAX(s->me.direct_basis_mv[i][1], s->me.direct_basis_mv[i][1] - s->me.co_located_mv[i][1])>>shift;
min= FFMIN(s->me.direct_basis_mv[i][1], s->me.direct_basis_mv[i][1] - s->me.co_located_mv[i][1])>>shift;
max+= (2*mb_y + (i>>1))*8 - 1; // +-1 is for the simpler rounding
min+= (2*mb_y + (i>>1))*8 + 1;
if(max >= s->height) ymax= s->height - max - 1;
if(min < -16 ) ymin= - 32 - min;
ymax= FFMIN(ymax, s->height - max);
ymin= FFMAX(ymin, - 16 - min);
if(s->mv_type == MV_TYPE_16X16) break;
}