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/*
* 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_
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