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// A sample program demonstrating using Google C++ testing framework.
//
// Author: wan@google.com (Zhanyong Wan)

#include "gtest/gtest.h"
#include "ffttools.hpp"
#include "debug.hpp"

#ifdef USE_FFTW
#include <fftw3.h>
#endif

namespace
{
TEST(ffttoolsTest, dft_float)
{
  int N = 5;
  cv::Mat_<float> mat_float(N, 2*N, CV_32FC1);
  for (int j = 0; j < mat_float.rows; j++)
    for (int i = 0; i < mat_float.cols; i++)
      mat_float.at<float>(j, i) = i + j * mat_float.cols;
  //showmat1channels(mat_float, 2);

  double timer = (double)cv::getTickCount();
  float timedft = 0;

  cv::Mat res = eco::dft(mat_float)/(mat_float.rows * mat_float.cols);
  //printMat(res);
  //showmat2channels(res, 2);

  timedft = ((double)cv::getTickCount() - timer) / cv::getTickFrequency();
  debug("dft time: %f", timedft);
	timer = (double)cv::getTickCount();

  res = eco::dft(res, 1);
  //showmat2channels(res, 2);

  timedft = ((double)cv::getTickCount() - timer) / cv::getTickFrequency();
  debug("dft time: %f", timedft);
}

TEST(ffttoolsTest, dft_double)
{
  int N = 5;
  cv::Mat_<double> mat_double(N, 2*N, CV_64FC1);
  for (int j = 0; j < mat_double.rows; j++)
    for (int i = 0; i < mat_double.cols; i++)
      mat_double.at<double>(j, i) = i + j * mat_double.cols;
  //showmat1channels(mat_double, 3);

  double timer = (double)cv::getTickCount();
  float timedft = 0;

  cv::Mat res = eco::dft(mat_double)/(mat_double.rows * mat_double.cols);
  //showmat2channels(res, 3);

  timedft = ((double)cv::getTickCount() - timer) / cv::getTickFrequency();
  debug("dft_d time: %f", timedft);
	timer = (double)cv::getTickCount();

  res = eco::dft(res, 1);
  //showmat2channels(res, 3);

  timedft = ((double)cv::getTickCount() - timer) / cv::getTickFrequency();
  debug("dft_d time: %f", timedft);
}
/*
TEST(ffttoolsTest, fftshift)
{
  cv::Mat_<float> mat_float(10, 10, CV_32FC1);
  for (int j = 0; j < mat_float.rows; j++)
    for (int i = 0; i < mat_float.cols; i++)
      mat_float.at<float>(j, i) = i + j * mat_float.cols;
  debug("channels: %d", mat_float.channels());

  showmat1channels(mat_float, 2);
  cv::Mat res;
  res = eco::fftshift(mat_float);
  showmat1channels(res, 2);

  res = eco::dft(mat_float, 1);
  showmat2channels(res, 2);

  res = eco::fftshift(res);
  showmat2channels(res, 2);
}

TEST(ffttoolsTest, fftshift)
{
  cv::Mat_<double> mat_double(10, 10, CV_32FC1);
  for (int j = 0; j < mat_double.rows; j++)
    for (int i = 0; i < mat_double.cols; i++)
      mat_double.at<double>(j, i) = i + j * mat_double.cols;
  debug("channels: %d", mat_double.channels());

  showmat1channels(mat_double, 3);
  cv::Mat res;
  res = eco::fftshift(mat_double);
  showmat1channels(res, 3);

  res = eco::dft_d(mat_double, 1);
  showmat2channels(res, 3);

  res = eco::fftshift(res);
  showmat2channels(res, 3);
}

TEST(ffttoolsTest, complexDotDivision)
{
  cv::Mat mat_float(10, 10, CV_32FC2);
  for (int j = 0; j < mat_float.rows; j++)
    for (int i = 0; i < mat_float.cols; i++)
    {
      mat_float.at<cv::Vec2f>(j, i)[0] = i + j * mat_float.cols;
      mat_float.at<cv::Vec2f>(j, i)[1] = i + j * mat_float.cols;
    }
  debug("channels: %d", mat_float.channels());
  showmat2channels(mat_float, 2);

  cv::Mat mat_float1(10, 10, CV_32FC2);
  for (int j = 0; j < mat_float1.rows; j++)
    for (int i = 0; i < mat_float1.cols; i++)
    {
      mat_float1.at<cv::Vec2f>(j, i)[0] = i + j * mat_float1.cols;
      mat_float1.at<cv::Vec2f>(j, i)[1] = -i;
    }
  debug("channels: %d", mat_float1.channels());
  showmat2channels(mat_float1, 2);

  cv::Mat res;
  res = eco::complexDotDivision(mat_float, mat_float1);
  showmat2channels(res, 2);
}

TEST(ffttoolsTest, complexMatrixMultiplication)
{
  cv::Mat mat_float(10, 10, CV_32FC2);
  for (int j = 0; j < mat_float.rows; j++)
    for (int i = 0; i < mat_float.cols; i++)
    {
      mat_float.at<cv::Vec2f>(j, i)[0] = i + j * mat_float.cols;
      mat_float.at<cv::Vec2f>(j, i)[1] = i + j * mat_float.cols;
    }
  debug("channels: %d", mat_float.channels());
  showmat2channels(mat_float, 2);

  cv::Mat mat_float1(10, 10, CV_32FC2);
  for (int j = 0; j < mat_float1.rows; j++)
    for (int i = 0; i < mat_float1.cols; i++)
    {
      mat_float1.at<cv::Vec2f>(j, i)[0] = i + j * mat_float1.cols;
      mat_float1.at<cv::Vec2f>(j, i)[1] = -i;
    }
  debug("channels: %d", mat_float1.channels());
  showmat2channels(mat_float1, 2);

  cv::Mat res;
  res = eco::complexMatrixMultiplication(mat_float, mat_float1);
  showmat2channels(res, 2);
}

TEST(ffttoolsTest, mat_sum_f)
{
  cv::Mat_<float> mat_float(10, 10, CV_32FC1);
  for (int j = 0; j < mat_float.rows; j++)
    for (int i = 0; i < mat_float.cols; i++)
      mat_float.at<float>(j, i) = i + j * mat_float.cols;

  EXPECT_EQ(4950, eco::mat_sum_f(mat_float));
}

TEST(ffttoolsTest, mat_sum_d)
{
  cv::Mat_<double> mat_double(10, 10, CV_64FC1);
  for (int j = 0; j < mat_double.rows; j++)
    for (int i = 0; i < mat_double.cols; i++)
      mat_double.at<double>(j, i) = i + j * mat_double.cols;

  EXPECT_EQ(4950, eco::mat_sum_d(mat_double));
}

TEST(ffttoolsTest, rot90)
{
  cv::Mat_<float> mat_float(10, 10, CV_32FC1);
  for (int j = 0; j < mat_float.rows; j++)
    for (int i = 0; i < mat_float.cols; i++)
      mat_float.at<float>(j, i) = i + j * mat_float.cols;

  showmat1channels(mat_float, 2);
  debug("==============");
  eco::rot90(mat_float, 1);
  showmat1channels(mat_float, 2);
  debug("==============");
  eco::rot90(mat_float, 2);
  showmat1channels(mat_float, 2);
  debug("==============");
  eco::rot90(mat_float, 3);
  showmat1channels(mat_float, 2);
}

TEST(ffttoolsTest, complexConvolution)
{
  cv::Mat mat_float(14, 14, CV_32FC2);
  for (int j = 0; j < mat_float.rows; j++)
    for (int i = 0; i < mat_float.cols; i++)
    {
      mat_float.at<cv::Vec2f>(j, i)[0] = i + j * mat_float.cols;
      mat_float.at<cv::Vec2f>(j, i)[1] = i + j * mat_float.cols;
    }
  debug("channels: %d", mat_float.channels());
  showmat2channels(mat_float, 2);

  cv::Mat mat_float1(9, 9, CV_32FC2);
  for (int j = 0; j < mat_float1.rows; j++)
    for (int i = 0; i < mat_float1.cols; i++)
    {
      mat_float1.at<cv::Vec2f>(j, i)[0] = i + j * mat_float1.cols;
      mat_float1.at<cv::Vec2f>(j, i)[1] = -i;
    }
  debug("channels: %d", mat_float1.channels());
  showmat2channels(mat_float1, 2);

  cv::Mat res;
  res = eco::complexConvolution(mat_float, mat_float1, 0);
  showmat2channels(res, 2);
  res = eco::complexConvolution(mat_float, mat_float1, 1);
  showmat2channels(res, 2);
}

TEST(debug, copyTo_clone_Difference)
{
  copyTo_clone_Difference();
}
*/

TEST(ffttoolsTest, complexDotMultiplication)
{
  int N = 5;
  cv::Mat mat_float(N, N*2, CV_32FC2);
  for (int j = 0; j < mat_float.rows; j++)
    for (int i = 0; i < mat_float.cols; i++)
    {
      mat_float.at<cv::Vec2f>(j, i)[0] = i + j * mat_float.cols;
      mat_float.at<cv::Vec2f>(j, i)[1] = i + j * mat_float.cols;
    }
  //showmat2channels(mat_float, 2);

  cv::Mat mat_float1(N, N*2, CV_32FC2);
  for (int j = 0; j < mat_float1.rows; j++)
    for (int i = 0; i < mat_float1.cols; i++)
    {
      mat_float1.at<cv::Vec2f>(j, i)[0] = i + j * mat_float1.cols;
      mat_float1.at<cv::Vec2f>(j, i)[1] = -i;
    }
  //showmat2channels(mat_float1, 2);

  // complexDotMultiplicationCPU
  cv::Mat res;
  
  res = eco::complexDotMultiplicationCPU(mat_float, mat_float1);  

  int iter = 70;
  double timer = (double)cv::getTickCount();
  float timedft = 0;
  while (iter > 0)
  {
    res = eco::complexDotMultiplicationCPU(mat_float, mat_float1);  
    iter--;
  }
  timedft = ((double)cv::getTickCount() - timer) / cv::getTickFrequency();
  debug("complexDotMultiplicationCPU time: %f", timedft);
  //showmat2channels(res, 2);
  
  // complexDotMultiplicationSIMD
#ifdef USE_SIMD
  res = eco::complexDotMultiplicationSIMD(mat_float, mat_float1);
  iter = 70;
  timer = (double)cv::getTickCount();
  while (iter > 0)
  {
    res = eco::complexDotMultiplicationSIMD(mat_float, mat_float1);  
    iter--;
  }
  timedft = ((double)cv::getTickCount() - timer) / cv::getTickFrequency();
  debug("complexDotMultiplicationSIMD time: %f", timedft);
  //showmat2channels(res, 2);
#endif

/*
#ifdef USE_CUDA
  cv::cuda::setDevice(0);
  debug("%d", cv::cuda::getDevice());
  //res = eco::complexDotMultiplicationGPU(mat_float, mat_float1);
  iter = 1;
  timer = (double)cv::getTickCount();
  while (iter > 0)
  {
    res = eco::complexDotMultiplicationGPU(mat_float, mat_float1);
    iter--;
  }
  timedft = ((double)cv::getTickCount() - timer) / cv::getTickFrequency();
  debug("complexDotMultiplicationGPU time: %f", timedft);
  //showmat2channels(res, 2);
#endif
*/
}//TEST
TEST(matReferenceTest, matReferenceTest)
{
  eco::matReferenceTest();
}
} //namespace