shithub: libvpx

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Replace copy_partitioning use case with choose_partitioning

This commit replaces the use of copy_partitioning with
choose_partitioning based on the sse of subsamped pixels, which
provides significantly better coding performance and runs at
similar speed, as compared to copy_partitioning. It improves rtc
speed 5 coding performance by 3%.

Change-Id: I52d3682a12dce0147f5e52383a594fc242ca3228

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

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

@@ -3158,7 +3158,6 @@

     int64_t dummy_dist = 0;

     const int idx_str = cm->mi_stride * mi_row + mi_col;

     MODE_INFO *mi = cm->mi + idx_str;

-    MODE_INFO *prev_mi = (cm->prev_mip + cm->mi_stride + 1 + idx_str)->src_mi;

     BLOCK_SIZE bsize;

     x->in_static_area = 0;

     x->source_variance = UINT_MAX;

@@ -3196,7 +3195,7 @@

                                &dummy_rate, &dummy_dist, 1, INT64_MAX,

                                cpi->pc_root);

         } else {

-          copy_partitioning(cm, mi, prev_mi);

+          choose_partitioning(cpi, tile, mi_row, mi_col);

           nonrd_use_partition(cpi, tile, mi, tp, mi_row, mi_col,

                               BLOCK_64X64, 1, &dummy_rate, &dummy_dist,

                               cpi->pc_root);

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

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

@@ -271,6 +271,10 @@

     sf->partition_search_type = REFERENCE_PARTITION;

     sf->use_nonrd_pick_mode = 1;

     sf->allow_skip_recode = 0;

+    sf->inter_mode_mask[BLOCK_32X32] = INTER_NEAREST_NEW_ZERO;

+    sf->inter_mode_mask[BLOCK_32X64] = INTER_NEAREST_NEW_ZERO;

+    sf->inter_mode_mask[BLOCK_64X32] = INTER_NEAREST_NEW_ZERO;

+    sf->inter_mode_mask[BLOCK_64X64] = INTER_NEAREST_NEW_ZERO;

   }

   if (speed >= 6) {

@@ -285,10 +289,6 @@

     sf->partition_search_type = VAR_BASED_PARTITION;

     sf->search_type_check_frequency = 50;

     sf->mv.search_method = NSTEP;

-    sf->inter_mode_mask[BLOCK_32X32] = INTER_NEAREST_NEW_ZERO;

-    sf->inter_mode_mask[BLOCK_32X64] = INTER_NEAREST_NEW_ZERO;

-    sf->inter_mode_mask[BLOCK_64X32] = INTER_NEAREST_NEW_ZERO;

-    sf->inter_mode_mask[BLOCK_64X64] = INTER_NEAREST_NEW_ZERO;

     sf->tx_size_search_method = is_keyframe ? USE_LARGESTALL : USE_TX_8X8;