libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_ssim.h

 /*
  *  Copyright (c) 2014 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.
  */
 
 #ifndef VP9_ENCODER_VP9_SSIM_H_
 #define VP9_ENCODER_VP9_SSIM_H_
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include "vpx_scale/yv12config.h"
 
 double vp9_calc_ssim(YV12_BUFFER_CONFIG *source, YV12_BUFFER_CONFIG *dest,
                      double *weight);
 
 double vp9_calc_ssimg(YV12_BUFFER_CONFIG *source, YV12_BUFFER_CONFIG *dest,
                       double *ssim_y, double *ssim_u, double *ssim_v);
 
+#if CONFIG_VP9_HIGHBITDEPTH
+double vp9_highbd_calc_ssim(YV12_BUFFER_CONFIG *source,
+                            YV12_BUFFER_CONFIG *dest,
+                            double *weight,
+                            unsigned int bd);
+
+double vp9_highbd_calc_ssimg(YV12_BUFFER_CONFIG *source,
+                             YV12_BUFFER_CONFIG *dest,
+                             double *ssim_y,
+                             double *ssim_u,
+                             double *ssim_v,
+                             unsigned int bd);
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_ENCODER_VP9_SSIM_H_