vp9: Non-rd pickmode: use simple block_yrd under some conditons.

For speed 8 only.
3% speed up for QVGA and 6.3% for VGA on Nexus 6.
~3% avgPSNR decrease on rtc_derf and 2.9% on rtc.

Disabled for now.

Change-Id: I70133f1f6c804d663d594df437bfe7fdb0030d6a

3 files changed, 15 insertions, 0 deletions

diff --git a/vp9/encoder/vp9_pickmode.c b/vp9/encoder/vp9_pickmode.c
index b48ec9e24..08f3f3801 100644
--- a/vp9/encoder/vp9_pickmode.c
+++ b/vp9/encoder/vp9_pickmode.c
@@ -651,6 +651,17 @@ static void block_yrd(VP9_COMP *cpi, MACROBLOCK *x, RD_COST *this_rdc,
   }
 #endif
 
+  if (cpi->sf.use_simple_block_yrd && cpi->common.frame_type != KEY_FRAME &&
+      !cyclic_refresh_segment_id_boosted(xd->mi[0]->segment_id)) {
+    unsigned int var_y, sse_y;
+    (void)tx_size;
+    model_rd_for_sb_y(cpi, bsize, x, xd, &this_rdc->rate, &this_rdc->dist,
+                      &var_y, &sse_y);
+    *sse = INT_MAX;
+    *skippable = 0;
+    return;
+  }
+
   (void)cpi;
 
   // The max tx_size passed in is TX_16X16.
diff --git a/vp9/encoder/vp9_speed_features.c b/vp9/encoder/vp9_speed_features.c
index d63f8db7d..3d22fecc8 100644
--- a/vp9/encoder/vp9_speed_features.c
+++ b/vp9/encoder/vp9_speed_features.c
@@ -313,6 +313,7 @@ static void set_rt_speed_feature(VP9_COMP *cpi, SPEED_FEATURES *sf, int speed,
   sf->allow_acl = 0;
   sf->copy_partition_flag = 0;
   sf->use_source_sad = 0;
+  sf->use_simple_block_yrd = 0;
 
   if (speed >= 1) {
     sf->allow_txfm_domain_distortion = 1;
@@ -555,6 +556,7 @@ static void set_rt_speed_feature(VP9_COMP *cpi, SPEED_FEATURES *sf, int speed,
       }
     }
     sf->limit_newmv_early_exit = 0;
+    sf->use_simple_block_yrd = 0;
   }
 }
 
diff --git a/vp9/encoder/vp9_speed_features.h b/vp9/encoder/vp9_speed_features.h
index df93b14c8..a7cc77872 100644
--- a/vp9/encoder/vp9_speed_features.h
+++ b/vp9/encoder/vp9_speed_features.h
@@ -482,6 +482,8 @@ typedef struct SPEED_FEATURES {
   // Compute the source sad for every superblock of the frame,
   // prior to encoding the frame, to be used to bypass some encoder decisions.
   int use_source_sad;
+
+  int use_simple_block_yrd;
 } SPEED_FEATURES;
 
 struct VP9_COMP;