shithub: libvpx

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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

--- a/vp9/encoder/vp9_pickmode.c

+++ b/vp9/encoder/vp9_pickmode.c

@@ -651,6 +651,17 @@

   }

 #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.

--- a/vp9/encoder/vp9_speed_features.c

+++ b/vp9/encoder/vp9_speed_features.c

@@ -313,6 +313,7 @@

   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 @@

       }

     }

     sf->limit_newmv_early_exit = 0;

+    sf->use_simple_block_yrd = 0;

   }

 }

--- a/vp9/encoder/vp9_speed_features.h

+++ b/vp9/encoder/vp9_speed_features.h

@@ -482,6 +482,8 @@

   // 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;