With on demand border extension, clamping the MV

is not longer needed.

Change-Id: I40c37ef18c67ab27fc336694dfca3c43a87c47ca

vp9/common/vp9_reconinter.c

@@ -269,21 +269,15 @@ static void dec_build_inter_predictors(MACROBLOCKD *xd, int plane, int block,
                ? (plane == 0 ? mi->bmi[block].as_mv[ref].as_mv
                              : mi_mv_pred_q4(mi, ref))
                : mi->mbmi.mv[ref].as_mv;
-
-    // TODO(jkoleszar): This clamping is done in the incorrect place for the
-    // scaling case. It needs to be done on the scaled MV, not the pre-scaling
-    // MV. Note however that it performs the subsampling aware scaling so
-    // that the result is always q4.
-    // mv_precision precision is MV_PRECISION_Q4.
-    const MV mv_q4 = clamp_mv_to_umv_border_sb(xd, &mv, bw, bh,
-                                               pd->subsampling_x,
-                                               pd->subsampling_y);
-
     MV32 scaled_mv;
     int xs, ys, x0, y0, x0_16, y0_16, x1, y1, frame_width,
         frame_height, subpel_x, subpel_y, buf_stride;
     uint8_t *ref_frame, *buf_ptr;
     const YV12_BUFFER_CONFIG *ref_buf = xd->block_refs[ref]->buf;
+    const MV mv_q4 = {
+      mv.row * (1 << (1 - pd->subsampling_y)),
+      mv.col * (1 << (1 - pd->subsampling_x))
+    };
 
     // Get reference frame pointer, width and height.
     if (plane == 0) {