/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/


#include "itkRealFFTTest.h"

#if defined(ITK_USE_FFTWF)
// Compare FFT using VNL and FFTW Libraries. The test is performed for
// two 3D arrays, one of them having the same dimension(4,4,4) and the
// other having different dimensions (3,4,5). Images are created with
// different dimensions in the test function based on the second
// template argument and the size of these dimensions are taken from
// the array. The data types used are float and double.
int
itkVnlFFTWF_RealFFTTest(int argc, char * argv[])
{
  using ImageF1 = itk::Image<float, 1>;
  using ImageF2 = itk::Image<float, 2>;
  using ImageF3 = itk::Image<float, 3>;

#  ifndef ITK_USE_CUFFTW
  itk::FFTWGlobalConfiguration::SetPlanRigor(FFTW_EXHAUSTIVE);
  itk::FFTWGlobalConfiguration::SetWriteWisdomCache(true);
  itk::FFTWGlobalConfiguration::SetReadWisdomCache(true);
  if (argc > 1)
  {
    itk::FFTWGlobalConfiguration::SetWisdomCacheBase(argv[1]);
  }
  std::cout << "WriteWisdomCache  " << itk::FFTWGlobalConfiguration::GetWriteWisdomCache() << std::endl;
  std::cout << "ReadWisdomCache  " << itk::FFTWGlobalConfiguration::GetReadWisdomCache() << std::endl;
  std::cout << "PlanRigor  " << itk::FFTWGlobalConfiguration::GetPlanRigor() << std::endl;
  std::cout << "WisdomCacheBase " << itk::FFTWGlobalConfiguration::GetWisdomCacheBase() << std::endl;
  std::cout << "WisdomeFile     " << itk::FFTWGlobalConfiguration::GetWisdomFileDefaultBaseName() << std::endl;
#  endif
  // Avoid unused parameter warnings.
  (void)argc;
  (void)argv;

  unsigned int SizeOfDimensions1[] = { 4, 4, 4 };
  unsigned int SizeOfDimensions2[] = { 3, 5, 4 };
  int          rval = 0;
  std::cerr << "VnlFFTWF:float,1 (4,4,4)" << std::endl;
  if ((test_fft_rtc<float,
                    1,
                    itk::VnlRealToHalfHermitianForwardFFTImageFilter<ImageF1>,
                    itk::FFTWRealToHalfHermitianForwardFFTImageFilter<ImageF1>>(SizeOfDimensions1)) != 0)
    rval++;
  std::cerr << "VnlFFTWF:float,2 (4,4,4)" << std::endl;
  if ((test_fft_rtc<float,
                    2,
                    itk::VnlRealToHalfHermitianForwardFFTImageFilter<ImageF2>,
                    itk::FFTWRealToHalfHermitianForwardFFTImageFilter<ImageF2>>(SizeOfDimensions1)) != 0)
    rval++;
  std::cerr << "VnlFFTWF:float,3 (4,4,4)" << std::endl;
  if ((test_fft_rtc<float,
                    3,
                    itk::VnlRealToHalfHermitianForwardFFTImageFilter<ImageF3>,
                    itk::FFTWRealToHalfHermitianForwardFFTImageFilter<ImageF3>>(SizeOfDimensions1)) != 0)
    rval++;
  std::cerr << "VnlFFTWF:float,1 (3,5,4)" << std::endl;
  if ((test_fft_rtc<float,
                    1,
                    itk::VnlRealToHalfHermitianForwardFFTImageFilter<ImageF1>,
                    itk::FFTWRealToHalfHermitianForwardFFTImageFilter<ImageF1>>(SizeOfDimensions2)) != 0)
    rval++;
  std::cerr << "VnlFFTWF:float,2 (3,5,4)" << std::endl;
  if ((test_fft_rtc<float,
                    2,
                    itk::VnlRealToHalfHermitianForwardFFTImageFilter<ImageF2>,
                    itk::FFTWRealToHalfHermitianForwardFFTImageFilter<ImageF2>>(SizeOfDimensions2)) != 0)
    rval++;
  std::cerr << "VnlFFTWF:float,3 (3,5,4)" << std::endl;
  if ((test_fft_rtc<float,
                    3,
                    itk::VnlRealToHalfHermitianForwardFFTImageFilter<ImageF3>,
                    itk::FFTWRealToHalfHermitianForwardFFTImageFilter<ImageF3>>(SizeOfDimensions2)) != 0)
    rval++;

  return (rval == 0) ? 0 : -1;
}
#endif
