dxy = ((motion_fy & 1) << 1) | (motion_fx & 1);
src_x = mb_x * 16 + (motion_fx >> 1);
src_y = mb_y * 16 + (motion_fy >> 1);
-
+ src_x = clip(src_x, -16, s->width);
+ if (src_x == s->width)
+ dxy&= 2;
+ src_y = clip(src_y, -16, s->height);
+ if (src_y == s->height)
+ dxy&= 1;
+
ptr = s->last_picture[0] + (src_y * s->linesize) + src_x;
put_pixels_tab[0][dxy](dest_y , ptr , s->linesize, 16);
dxy = ((motion_by & 1) << 1) | (motion_bx & 1);
src_x = mb_x * 16 + (motion_bx >> 1);
src_y = mb_y * 16 + (motion_by >> 1);
+ src_x = clip(src_x, -16, s->width);
+ if (src_x == s->width)
+ dxy&= 2;
+ src_y = clip(src_y, -16, s->height);
+ if (src_y == s->height)
+ dxy&= 1;
ptr = s->next_picture[0] + (src_y * s->linesize) + src_x;
avg_pixels_tab[0][dxy](dest_y , ptr , s->linesize, 16);