- P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
- P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
- }
- c->pred_x= P_LEFT[0];
- c->pred_y= P_LEFT[1];
+ /* special case for first line */
+ if (!s->first_slice_line) {
+ P_TOP[0] = mv_table[mot_xy - mot_stride ][0];
+ P_TOP[1] = mv_table[mot_xy - mot_stride ][1];
+ P_TOPRIGHT[0] = mv_table[mot_xy - mot_stride + 1][0];
+ P_TOPRIGHT[1] = mv_table[mot_xy - mot_stride + 1][1];
+ if (P_TOP[1] > (c->ymax << shift)) P_TOP[1] = (c->ymax << shift);
+ if (P_TOPRIGHT[0] < (c->xmin << shift)) P_TOPRIGHT[0] = (c->xmin << shift);
+ if (P_TOPRIGHT[1] > (c->ymax << shift)) P_TOPRIGHT[1] = (c->ymax << shift);
+
+ P_MEDIAN[0] = mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
+ P_MEDIAN[1] = mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);