third_party/aom/test/util.h

   1 /*
   2  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
   3  *
   4  * This source code is subject to the terms of the BSD 2 Clause License and
   5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
   6  * was not distributed with this source code in the LICENSE file, you can
   7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
   8  * Media Patent License 1.0 was not distributed with this source code in the
   9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  10  */
  11
  12 #ifndef AOM_TEST_UTIL_H_
  13 #define AOM_TEST_UTIL_H_
  14
  15 #include <stdio.h>
  16 #include <math.h>
  17 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
  18 #include "aom/aom_integer.h"
  19 #include "aom/aom_image.h"
  20 #include "aom_ports/aom_timer.h"
  21
  22 // Macros
  23 #define GET_PARAM(k) ::testing::get<k>(GetParam())
  24
  25 inline double compute_psnr(const aom_image_t *img1, const aom_image_t *img2) {
  26   assert((img1->fmt == img2->fmt) && (img1->d_w == img2->d_w) &&
  27          (img1->d_h == img2->d_h));
  28
  29   const unsigned int width_y = img1->d_w;
  30   const unsigned int height_y = img1->d_h;
  31   unsigned int i, j;
  32
  33   int64_t sqrerr = 0;
  34   for (i = 0; i < height_y; ++i)
  35     for (j = 0; j < width_y; ++j) {
  36       int64_t d = img1->planes[AOM_PLANE_Y][i * img1->stride[AOM_PLANE_Y] + j] -
  37                   img2->planes[AOM_PLANE_Y][i * img2->stride[AOM_PLANE_Y] + j];
  38       sqrerr += d * d;
  39     }
  40   double mse = static_cast<double>(sqrerr) / (width_y * height_y);
  41   double psnr = 100.0;
  42   if (mse > 0.0) {
  43     psnr = 10 * log10(255.0 * 255.0 / mse);
  44   }
  45   return psnr;
  46 }
  47
  48 static INLINE double get_time_mark(aom_usec_timer *t) {
  49   aom_usec_timer_mark(t);
  50   return static_cast<double>(aom_usec_timer_elapsed(t));
  51 }
  52
  53 #endif  // AOM_TEST_UTIL_H_