Disable adaptive pred filter for non-split mode

If sf->disable_split_mask is DISABLE_ALL_SPLIT, disable
sf->adaptive_pred_interp_filter to avoid unnecessary operations.

Change-Id: Icb59174b2f4e9a3c3c16a696deb8018e5bd999eb

vp9/encoder/vp9_encodeframe.c

@@ -1935,6 +1935,8 @@ static void encode_sb_row(VP9_COMP *cpi, const TileInfo *const tile,
 
     BLOCK_SIZE i;
     MACROBLOCK *x = &cpi->mb;
+
+    if (cpi->sf.adaptive_pred_interp_filter) {
       for (i = BLOCK_4X4; i < BLOCK_8X8; ++i) {
         const int num_4x4_w = num_4x4_blocks_wide_lookup[i];
         const int num_4x4_h = num_4x4_blocks_high_lookup[i];
@@ -1944,6 +1946,7 @@ static void encode_sb_row(VP9_COMP *cpi, const TileInfo *const tile,
             for (x->b_index = 0; x->b_index < 16 / num_4x4_blk; ++x->b_index)
               get_block_context(x, i)->pred_interp_filter = SWITCHABLE;
       }
+    }
 
     vp9_zero(cpi->mb.pred_mv);
 

vp9/encoder/vp9_onyx_if.c

@@ -972,6 +972,9 @@ void vp9_set_speed_features(VP9_COMP *cpi) {
   if (cpi->encode_breakout && cpi->oxcf.mode == MODE_REALTIME &&
       sf->encode_breakout_thresh > cpi->encode_breakout)
     cpi->encode_breakout = sf->encode_breakout_thresh;
+
+  if (sf->disable_split_mask == DISABLE_ALL_SPLIT)
+    sf->adaptive_pred_interp_filter = 0;
 }
 
 static void alloc_raw_frame_buffers(VP9_COMP *cpi) {