Updates vp9_pattern search to return integer sads

Updates the vp9_pattern_search function to return integer one-away
neighbors' sad values, for subsequent use in speeding up the
sub-pel search. Also, removes code for the do_refine option
which is not being used currently.
Updates the integer and subpel functions to pass in a 5-element
sad list for output or input.

A new pruned sub-pel search algorithm is implemented that uses
the sad returned from the integer pel search. But it is not
deployed yet.

Change-Id: Ifa9f5ad024b5b660570366d2bd900343e1891520

vp9/encoder/vp9_mbgraph.c

@@ -34,6 +34,7 @@ static unsigned int do_16x16_motion_iteration(VP9_COMP *cpi,
   const int tmp_row_min = x->mv_row_min;
   const int tmp_row_max = x->mv_row_max;
   MV ref_full;
+  int sad_list[5];
 
   // Further step/diamond searches as necessary
   int step_param = mv_sf->reduce_first_step_size;
@@ -45,8 +46,9 @@ static unsigned int do_16x16_motion_iteration(VP9_COMP *cpi,
   ref_full.row = ref_mv->row >> 3;
 
   /*cpi->sf.search_method == HEX*/
-  vp9_hex_search(x, &ref_full, step_param, x->errorperbit, 0, &v_fn_ptr, 0,
-                 ref_mv, dst_mv);
+  vp9_hex_search(x, &ref_full, step_param, x->errorperbit, 0,
+                 cond_sad_list(cpi, sad_list),
+                 &v_fn_ptr, 0, ref_mv, dst_mv);
 
   // Try sub-pixel MC
   // if (bestsme > error_thresh && bestsme < INT_MAX)
@@ -55,8 +57,10 @@ static unsigned int do_16x16_motion_iteration(VP9_COMP *cpi,
     unsigned int sse;
     cpi->find_fractional_mv_step(
         x, dst_mv, ref_mv, cpi->common.allow_high_precision_mv, x->errorperbit,
-        &v_fn_ptr, 0, mv_sf->subpel_iters_per_step, NULL, NULL, &distortion,
-        &sse, NULL, 0, 0);
+        &v_fn_ptr, 0, mv_sf->subpel_iters_per_step,
+        cond_sad_list(cpi, sad_list),
+        NULL, NULL,
+        &distortion, &sse, NULL, 0, 0);
   }
 
   xd->mi[0]->mbmi.mode = NEWMV;