libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_ssim.c

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <math.h>
 #include "./vp9_rtcd.h"
+#include "vpx_ports/mem.h"
 #include "vp9/encoder/vp9_ssim.h"
 
 void vp9_ssim_parms_16x16_c(uint8_t *s, int sp, uint8_t *r,
                             int rp, unsigned long *sum_s, unsigned long *sum_r,
                             unsigned long *sum_sq_s, unsigned long *sum_sq_r,
                             unsigned long *sum_sxr) {
   int i, j;
   for (i = 0; i < 16; i++, s += sp, r += rp) {
     for (j = 0; j < 16; j++) {
       *sum_s += s[j];
@@ skipping 467 matching lines @@
                        source->uv_stride, dest->uv_stride,
                        source->uv_crop_width, source->uv_crop_height, bd);
   *ssim_y = a;
   *ssim_u = b;
   *ssim_v = c;
   ssim_all = (a * 4 + b + c) / 6;
 
   return ssim_all;
 }
 #endif  // CONFIG_VP9_HIGHBITDEPTH