shithub: libvpx

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Added a speed feature use_square_partition_only

This commit adds a speed feature where only squared partition are
evaluated in partition picking. Enable this feature in cpu-used 2
reduces encoding time by ~30%.

loss of compression:
-0.9% on cif set
-1.23% on stdhd

Change-Id: Ia6fad11210f0b78365abb889f9245604513be5b9

--- a/vp9/encoder/vp9_encodeframe.c

+++ b/vp9/encoder/vp9_encodeframe.c

@@ -1488,7 +1488,8 @@

           *(get_sb_partitioning(x, bsize)) = bsize;

       }

     }

-    if (!cpi->sf.less_rectangular_check || !larger_is_better) {

+    if (!cpi->sf.use_square_partition_only &&

+        (!cpi->sf.less_rectangular_check ||!larger_is_better)) {

       // PARTITION_HORZ

       if (bsize >= BLOCK_SIZE_SB8X8 && mi_col + (ms >> 1) < cm->mi_cols) {

         int r2, r = 0;

--- a/vp9/encoder/vp9_onyx_if.c

+++ b/vp9/encoder/vp9_onyx_if.c

@@ -709,6 +709,7 @@

   sf->partition_by_variance = 0;

   sf->use_one_partition_size_always = 0;

   sf->less_rectangular_check = 0;

+  sf->use_square_partition_only = 0;

   sf->use_partitions_less_than = 0;

   sf->less_than_block_size = BLOCK_SIZE_MB16X16;

   sf->use_partitions_greater_than = 0;

@@ -749,14 +750,18 @@

                                       cpi->common.intra_only ||

                                       cpi->common.show_frame == 0) ?

                                      USE_FULL_RD :

-                                     USE_LARGESTINTRA);

+                                     USE_LARGESTALL);

+        sf->conditional_oblique_intramodes = 1;

         sf->disable_splitmv =

             (MIN(cpi->common.width, cpi->common.height) >= 720)? 1 : 0;

-        sf->conditional_oblique_intramodes = 1;

+        sf->use_square_partition_only = !(cpi->common.frame_type == KEY_FRAME ||

+                                   cpi->common.intra_only ||

+                                   cpi->common.show_frame == 0);

       }

       if (speed == 2) {

         sf->adjust_thresholds_by_speed = 1;

         sf->less_rectangular_check  = 1;

+        sf->use_square_partition_only = 1;

         sf->comp_inter_joint_search_thresh = BLOCK_SIZE_TYPES;

         sf->reduce_first_step_size = 1;

         sf->optimize_coefficients = 0;

@@ -763,11 +768,7 @@

         sf->use_lastframe_partitioning = 1;

         sf->adjust_partitioning_from_last_frame = 1;

         sf->last_partitioning_redo_frequency = 3;

-        sf->tx_size_search_method = ((cpi->common.frame_type == KEY_FRAME ||

-                                      cpi->common.intra_only ||

-                                      cpi->common.show_frame == 0) ?

-                                     USE_FULL_RD :

-                                     USE_LARGESTALL);

+        sf->tx_size_search_method = USE_LARGESTALL;

         sf->conditional_oblique_intramodes = 1;

       }

       if (speed == 3) {

--- a/vp9/encoder/vp9_onyx_int.h

+++ b/vp9/encoder/vp9_onyx_int.h

@@ -234,6 +234,7 @@

   int partition_by_variance;

   int use_one_partition_size_always;

   int less_rectangular_check;

+  int use_square_partition_only;

   BLOCK_SIZE_TYPE always_this_block_size;

   int use_partitions_greater_than;

   BLOCK_SIZE_TYPE greater_than_block_size;