commit 3b9b29473525323d2ef5c6bc9d600038823ac767
author Fyodor Kyslov <kyslov@google.com> Fri Jan 10 14:34:17 2020 -0800
committer Fyodor Kyslov <kyslov@google.com> Mon Jan 13 22:22:18 2020 +0000
tree e9e9c39b14c46bdbd766a4aeb72af530303481e2
parent daf0af4151f3fe352e79b62eba3b91c05d349c6d

AV1 RT: Reduce interp filter search on low-var content

~5% speedup on speed7 lowres, with 0.5% DBRate loss on rtc_derf

Change-Id: Ia8c8cf666456571a118c498343bca8e9841ec45b

av1/encoder/nonrd_pickmode.c

diff --git a/av1/encoder/nonrd_pickmode.c b/av1/encoder/nonrd_pickmode.c
index efd9f15..df2f149 100644
--- a/av1/encoder/nonrd_pickmode.c
+++ b/av1/encoder/nonrd_pickmode.c
@@ -1241,7 +1241,11 @@
   InterpFilter filters[FILTER_SEARCH_SIZE] = { EIGHTTAP_REGULAR,
                                                EIGHTTAP_SMOOTH };
   int i;
-  for (i = 0; i < FILTER_SEARCH_SIZE; ++i) {
+  const int filter_search_size =
+      x->source_variance > cpi->sf.interp_sf.disable_filter_search_var_thresh
+          ? FILTER_SEARCH_SIZE
+          : 1;
+  for (i = 0; i < filter_search_size; ++i) {
     int64_t cost;
     InterpFilter filter = filters[i];
     mi->interp_filters = av1_broadcast_interp_filter(filter);
@@ -1302,7 +1306,7 @@
   if (reuse_inter_pred) {
     pd->dst.buf = (*this_mode_pred)->data;
     pd->dst.stride = (*this_mode_pred)->stride;
-  } else if (best_filter_index < FILTER_SEARCH_SIZE - 1) {
+  } else if (best_filter_index < filter_search_size - 1) {
     av1_enc_build_inter_predictor(cm, xd, mi_row, mi_col, NULL, bsize,
                                   AOM_PLANE_Y, AOM_PLANE_Y);
   }