int ff_estimate_motion_b(MpegEncContext * s, int mb_x, int mb_y, int16_t (*mv_table)[2], uint8_t *ref_picture, int f_code) { int mx, my, range, dmin; int xmin, ymin, xmax, ymax; int rel_xmin, rel_ymin, rel_xmax, rel_ymax; int pred_x=0, pred_y=0; int P[6][2]; const int shift= 1+s->quarter_sample; const int mot_stride = s->mb_width + 2; const int mot_xy = (mb_y + 1)*mot_stride + mb_x + 1; get_limits(s, &range, &xmin, &ymin, &xmax, &ymax, f_code); switch(s->me_method) { case ME_ZERO: default: no_motion_search(s, &mx, &my); dmin = 0; break; case ME_FULL: dmin = full_motion_search(s, &mx, &my, range, xmin, ymin, xmax, ymax, ref_picture); break; case ME_LOG: dmin = log_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax, ref_picture); break; case ME_PHODS: dmin = phods_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax, ref_picture); break; case ME_X1: case ME_EPZS: { rel_xmin= xmin - mb_x*16; rel_xmax= xmax - mb_x*16; rel_ymin= ymin - mb_y*16; rel_ymax= ymax - mb_y*16; P[0][0] = mv_table[mot_xy ][0]; P[0][1] = mv_table[mot_xy ][1]; P[1][0] = mv_table[mot_xy - 1][0]; P[1][1] = mv_table[mot_xy - 1][1]; if(P[1][0] > (rel_xmax<<shift)) P[1][0]= (rel_xmax<<shift); /* special case for first line */ if ((mb_y == 0 || s->first_slice_line || s->first_gob_line)) { P[4][0] = P[1][0]; P[4][1] = P[1][1]; } else { P[2][0] = mv_table[mot_xy - mot_stride ][0]; P[2][1] = mv_table[mot_xy - mot_stride ][1]; P[3][0] = mv_table[mot_xy - mot_stride + 1 ][0]; P[3][1] = mv_table[mot_xy - mot_stride + 1 ][1]; if(P[2][1] > (rel_ymax<<shift)) P[2][1]= (rel_ymax<<shift); if(P[3][0] < (rel_xmin<<shift)) P[3][0]= (rel_xmin<<shift); if(P[3][1] > (rel_ymax<<shift)) P[3][1]= (rel_ymax<<shift); P[4][0]= mid_pred(P[1][0], P[2][0], P[3][0]); P[4][1]= mid_pred(P[1][1], P[2][1], P[3][1]); } pred_x= P[1][0]; pred_y= P[1][1]; } dmin = epzs_motion_search(s, &mx, &my, P, pred_x, pred_y, rel_xmin, rel_ymin, rel_xmax, rel_ymax, ref_picture); mx+= mb_x*16; my+= mb_y*16; break; } /* intra / predictive decision */ // xx = mb_x * 16; // yy = mb_y * 16; // pix = s->new_picture[0] + (yy * s->linesize) + xx; /* At this point (mx,my) are full-pell and the absolute displacement */ // ppix = ref_picture + (my * s->linesize) + mx; dmin= halfpel_motion_search(s, &mx, &my, dmin, xmin, ymin, xmax, ymax, pred_x, pred_y, ref_picture); // s->mb_type[mb_y*s->mb_width + mb_x]= mb_type; mv_table[mot_xy][0]= mx; mv_table[mot_xy][1]= my; return dmin; }