/* *  Copyright (c) 2012 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 VPX_TEST_UTIL_H_#define VPX_TEST_UTIL_H_ #include <stdio.h>#include <math.h>#include <tuple> #include "third_party/googletest/src/include/gtest/gtest.h"#include "vpx/vpx_image.h" // Macros#define GET_PARAM(k) std::get<k>(GetParam()) inline double compute_psnr(const vpx_image_t *img1, const vpx_image_t *img2) {  assert((img1->fmt == img2->fmt) && (img1->d_w == img2->d_w) &&         (img1->d_h == img2->d_h));   const unsigned int width_y = img1->d_w;  const unsigned int height_y = img1->d_h;  unsigned int i, j;   int64_t sqrerr = 0;  for (i = 0; i < height_y; ++i) {    for (j = 0; j < width_y; ++j) {      int64_t d = img1->planes[VPX_PLANE_Y][i * img1->stride[VPX_PLANE_Y] + j] -                  img2->planes[VPX_PLANE_Y][i * img2->stride[VPX_PLANE_Y] + j];      sqrerr += d * d;    }  }  double mse = static_cast<double>(sqrerr) / (width_y * height_y);  double psnr = 100.0;  if (mse > 0.0) {    psnr = 10 * log10(255.0 * 255.0 / mse);  }  return psnr;} #endif  // VPX_TEST_UTIL_H_