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.
  */
 
@@ skipping 24 matching lines @@
     for (j = 0; j < 8; j++) {
       *sum_s += s[j];
       *sum_r += r[j];
       *sum_sq_s += s[j] * s[j];
       *sum_sq_r += r[j] * r[j];
       *sum_sxr += s[j] * r[j];
     }
   }
 }
 
-const static int64_t cc1 =  26634; // (64^2*(.01*255)^2
-const static int64_t cc2 = 239708; // (64^2*(.03*255)^2
+static const int64_t cc1 =  26634;  // (64^2*(.01*255)^2
+static const int64_t cc2 = 239708;  // (64^2*(.03*255)^2
 
 static double similarity(unsigned long sum_s, unsigned long sum_r,
                          unsigned long sum_sq_s, unsigned long sum_sq_r,
                          unsigned long sum_sxr, int count) {
   int64_t ssim_n, ssim_d;
   int64_t c1, c2;
 
   // scale the constants by number of pixels
   c1 = (cc1 * count * count) >> 12;
   c2 = (cc2 * count * count) >> 12;
@@ skipping 82 matching lines @@
   c = vp9_ssim2(source->v_buffer, dest->v_buffer,
                 source->uv_stride, dest->uv_stride,
                 source->uv_crop_width, source->uv_crop_height);
   *ssim_y = a;
   *ssim_u = b;
   *ssim_v = c;
   ssim_all = (a * 4 + b + c) / 6;
 
   return ssim_all;
 }