ref: f6a002f2a67579cce9d53a4314f0676228517c12
dir: /test/util.h/
/* * 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 "third_party/googletest/src/include/gtest/gtest.h" #include "vpx/vpx_image.h" // Macros #define GET_PARAM(k) ::testing::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_