shithub: libvpx

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vp9-rtc: Some speedups to speed 5 real-time mode

Enable use_source_sad at speed 5 and use it to
condition min_partition_size in nonrd_select_partition.
Also disable checking rectangular partitions in
nonrd_pick_partition for speed >= 5.

~5-8% speedup for HD clip on x86.
bdrate loss of ~1% on rtc set.

Change-Id: Ia643b34a51191e3929a443de77e271561e7c877d

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

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

@@ -5086,8 +5086,8 @@

   (void)*tp_orig;

-  // Avoid checking for rectangular partitions for speed >= 6.

-  if (cpi->oxcf.speed >= 6) do_rect = 0;

+  // Avoid checking for rectangular partitions for speed >= 5.

+  if (cpi->oxcf.speed >= 5) do_rect = 0;

   assert(num_8x8_blocks_wide_lookup[bsize] ==

          num_8x8_blocks_high_lookup[bsize]);

@@ -5345,6 +5345,11 @@

              subsize >= subsize_ref) {

     x->max_partition_size = BLOCK_32X32;

     x->min_partition_size = BLOCK_8X8;

+    if (subsize_ref == BLOCK_16X16 && !xd->mi[0]->segment_id &&

+        x->content_state_sb != kVeryHighSad &&

+        x->content_state_sb != kLowVarHighSumdiff &&

+        x->content_state_sb != kHighSadHighSumdiff)

+      x->min_partition_size = BLOCK_16X16;

     nonrd_pick_partition(cpi, td, tile_data, tp, mi_row, mi_col, bsize, rd_cost,

                          0, INT64_MAX, pc_tree);

   } else if (bsize == BLOCK_16X16 && partition != PARTITION_NONE) {

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

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

@@ -634,6 +634,7 @@

       sf->use_compound_nonrd_pickmode = 1;

     }

     if (cm->width * cm->height > 1280 * 720) sf->cb_pred_filter_search = 1;

+    if (!cpi->external_resize) sf->use_source_sad = 1;

   }

   if (speed >= 6) {

@@ -645,8 +646,6 @@

     sf->mv.search_method = NSTEP;

     sf->mv.reduce_first_step_size = 1;

     sf->skip_encode_sb = 0;

-

-    if (!cpi->external_resize) sf->use_source_sad = 1;

     if (sf->use_source_sad) {

       sf->adapt_partition_source_sad = 1;