shithub: libvpx

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ref: 5127e58dab541a21f2953f8f0acb86da9170e042
parent: 61927ba4ac6390bc98396b9ba30d050f63e720fa
author: Ranjit Kumar Tulabandu <ranjit.tulabandu@ittiam.com>
date: Thu Feb 16 14:37:39 EST 2017 

Structured the mode ordering code to avoid redundant memcpy

Change-Id: I4f5d6b54018bd1928cd9e5e42619e6f55b334803


--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -3169,15 +3169,14 @@
 
   midx = sf->schedule_mode_search ? mode_skip_start : 0;
 
-  memcpy(mode_map, tile_mode_map, sizeof(mode_map));
-
   while (midx > 4) {
     uint8_t end_pos = 0;
     for (i = 5; i < midx; ++i) {
-      if (mode_threshold[mode_map[i - 1]] > mode_threshold[mode_map[i]]) {
-        uint8_t tmp = mode_map[i];
-        mode_map[i] = mode_map[i - 1];
-        mode_map[i - 1] = tmp;
+      if (mode_threshold[tile_mode_map[i - 1]] >
+          mode_threshold[tile_mode_map[i]]) {
+        uint8_t tmp = tile_mode_map[i];
+        tile_mode_map[i] = tile_mode_map[i - 1];
+        tile_mode_map[i - 1] = tmp;
         end_pos = i;
       }
     }
@@ -3184,7 +3183,7 @@
     midx = end_pos;
   }
 
-  memcpy(tile_mode_map, mode_map, sizeof(mode_map));
+  memcpy(mode_map, tile_mode_map, sizeof(mode_map));
 
 #if CONFIG_MULTITHREAD
   if (NULL != tile_data->enc_row_mt_mutex)