static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no) { MpegEncContext *s = &r->s; int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; int A[2] = {0}, B[2], C[2]; int i, j; int mx, my; int avail_index = avail_indexes[subblock_no]; int c_off = part_sizes_w[block_type]; mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride; if(subblock_no == 3) c_off = -1; if(r->avail_cache[avail_index - 1]){ A[0] = s->current_picture_ptr->f.motion_val[0][mv_pos-1][0]; A[1] = s->current_picture_ptr->f.motion_val[0][mv_pos-1][1]; } if(r->avail_cache[avail_index - 4]){ B[0] = s->current_picture_ptr->f.motion_val[0][mv_pos-s->b8_stride][0]; B[1] = s->current_picture_ptr->f.motion_val[0][mv_pos-s->b8_stride][1]; }else{ B[0] = A[0]; B[1] = A[1]; } if(!r->avail_cache[avail_index - 4 + c_off]){ if(r->avail_cache[avail_index - 4] && (r->avail_cache[avail_index - 1] || r->rv30)){ C[0] = s->current_picture_ptr->f.motion_val[0][mv_pos-s->b8_stride-1][0]; C[1] = s->current_picture_ptr->f.motion_val[0][mv_pos-s->b8_stride-1][1]; }else{ C[0] = A[0]; C[1] = A[1]; } }else{ C[0] = s->current_picture_ptr->f.motion_val[0][mv_pos-s->b8_stride+c_off][0]; C[1] = s->current_picture_ptr->f.motion_val[0][mv_pos-s->b8_stride+c_off][1]; } mx = mid_pred(A[0], B[0], C[0]); my = mid_pred(A[1], B[1], C[1]); mx += r->dmv[dmv_no][0]; my += r->dmv[dmv_no][1]; for(j = 0; j < part_sizes_h[block_type]; j++){ for(i = 0; i < part_sizes_w[block_type]; i++){ s->current_picture_ptr->f.motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx; s->current_picture_ptr->f.motion_val[0][mv_pos + i + j*s->b8_stride][1] = my; } } }