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4mv + b frame encoding segfault fix 

Originally committed as revision 2728 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-01-28 00:36:58 +00:00
parent 6ff6cff203
commit 5a60360712
1 changed files with 4 additions and 4 deletions
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8
libavcodec/motion_est.c
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@ -1577,15 +1577,15 @@ static inline int direct_search(MpegEncContext * s, uint8_t *src_data[3], uint8_
max= FFMAX(s->me.direct_basis_mv[i][0], s->me.direct_basis_mv[i][0] - s->me.co_located_mv[i][0])>>shift;
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;
max+= 16*mb_x + 1; // +-1 is for the simpler rounding
min+= 16*mb_x - 1;
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;
max+= 16*mb_y + 1; // +-1 is for the simpler rounding
min+= 16*mb_y - 1;
ymax= FFMIN(ymax, s->height - max);
ymin= FFMAX(ymin, - 16 - min);