Fix mv range border in pixels

WIP: trying to resolve the mismatch issue in extending frame
dimension into multiples of 8.

Change-Id: I24e7638ab3c50e21e6969c1eeed4f607d6f11f65

vp9/encoder/vp9_firstpass.c

@@ -501,9 +501,9 @@ void vp9_first_pass(VP9_COMP *cpi) {
     recon_uvoffset = (mb_row * recon_uv_stride * 8);
 
     // Set up limit values for motion vectors to prevent them extending outside the UMV borders
-    x->mv_row_min = -((mb_row * 16) + (VP9BORDERINPIXELS - 16));
+    x->mv_row_min = -((mb_row * 16) + (VP9BORDERINPIXELS - 8));
     x->mv_row_max = ((cm->mb_rows - 1 - mb_row) * 16)
-                    + (VP9BORDERINPIXELS - 16);
+                    + (VP9BORDERINPIXELS - 8);
 
     // for each macroblock col in image
     for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) {
@@ -538,9 +538,9 @@ void vp9_first_pass(VP9_COMP *cpi) {
       intra_error += (int64_t)this_error;
 
       // Set up limit values for motion vectors to prevent them extending outside the UMV borders
-      x->mv_col_min = -((mb_col * 16) + (VP9BORDERINPIXELS - 16));
+      x->mv_col_min = -((mb_col * 16) + (VP9BORDERINPIXELS - 8));
       x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16)
-                      + (VP9BORDERINPIXELS - 16);
+                      + (VP9BORDERINPIXELS - 8);
 
       // Other than for the first frame do a motion search
       if (cm->current_video_frame > 0) {

vp9/encoder/vp9_mbgraph.c

@@ -257,9 +257,9 @@ static void update_mbgraph_frame_stats(VP9_COMP *cpi,
   // Set up limit values for motion vectors to prevent them extending outside the UMV borders
   arf_top_mv.as_int = 0;
   gld_top_mv.as_int = 0;
-  x->mv_row_min     = -(VP9BORDERINPIXELS - 16 - VP9_INTERP_EXTEND);
-  x->mv_row_max     = (cm->mb_rows - 1) * 16 + VP9BORDERINPIXELS
-                      - 16 - VP9_INTERP_EXTEND;
+  x->mv_row_min     = -(VP9BORDERINPIXELS - 8 - VP9_INTERP_EXTEND);
+  x->mv_row_max     = (cm->mb_rows - 1) * 8 + VP9BORDERINPIXELS
+                      - 8 - VP9_INTERP_EXTEND;
   xd->up_available  = 0;
   xd->plane[0].dst.stride  = buf->y_stride;
   xd->plane[0].pre[0].stride  = buf->y_stride;
@@ -278,9 +278,9 @@ static void update_mbgraph_frame_stats(VP9_COMP *cpi,
     // Set up limit values for motion vectors to prevent them extending outside the UMV borders
     arf_left_mv.as_int = arf_top_mv.as_int;
     gld_left_mv.as_int = gld_top_mv.as_int;
-    x->mv_col_min      = -(VP9BORDERINPIXELS - 16 - VP9_INTERP_EXTEND);
-    x->mv_col_max      = (cm->mb_cols - 1) * 16 + VP9BORDERINPIXELS
-                         - 16 - VP9_INTERP_EXTEND;
+    x->mv_col_min      = -(VP9BORDERINPIXELS - 8 - VP9_INTERP_EXTEND);
+    x->mv_col_max      = (cm->mb_cols - 1) * 8 + VP9BORDERINPIXELS
+                         - 8 - VP9_INTERP_EXTEND;
     xd->left_available = 0;
 
     for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) {