/*============================================================================

The Medical Imaging Interaction Toolkit (MITK)

Copyright (c) German Cancer Research Center (DKFZ)
All rights reserved.

Use of this source code is governed by a 3-clause BSD license that can be
found in the LICENSE file.

============================================================================*/

#include <mitkPixelType.h>
#include <mitkLog.h>

mitk::PixelType::PixelType(const mitk::PixelType &other)
  : m_ComponentType(other.m_ComponentType),
    m_PixelType(other.m_PixelType),
    m_ComponentTypeName(other.m_ComponentTypeName),
    m_PixelTypeName(other.m_PixelTypeName),
    m_NumberOfComponents(other.m_NumberOfComponents),
    m_BytesPerComponent(other.m_BytesPerComponent)
{
}

mitk::PixelType &mitk::PixelType::operator=(const PixelType &other)
{
  m_ComponentType = other.m_ComponentType;
  m_PixelType = other.m_PixelType;
  m_ComponentTypeName = other.m_ComponentTypeName;
  m_PixelTypeName = other.m_PixelTypeName;
  m_NumberOfComponents = other.m_NumberOfComponents;
  m_BytesPerComponent = other.m_BytesPerComponent;

  return *this;
}

mitk::PixelType::ItkIOPixelType mitk::PixelType::GetPixelType() const
{
  return m_PixelType;
}

mitk::PixelType::ItkIOComponentType mitk::PixelType::GetComponentType() const
{
  return m_ComponentType;
}

std::string mitk::PixelType::GetPixelTypeAsString() const
{
  return m_PixelTypeName;
}

std::string mitk::PixelType::GetComponentTypeAsString() const
{
  return m_ComponentTypeName;
}

std::string mitk::PixelType::GetTypeAsString() const
{
  return m_PixelTypeName + " (" + m_ComponentTypeName + ")";
}

size_t mitk::PixelType::GetSize() const
{
  return (m_NumberOfComponents * m_BytesPerComponent);
}

size_t mitk::PixelType::GetBpe() const
{
  return this->GetSize() * 8;
}

size_t mitk::PixelType::GetNumberOfComponents() const
{
  return m_NumberOfComponents;
}

size_t mitk::PixelType::GetBitsPerComponent() const
{
  return m_BytesPerComponent * 8;
}

mitk::PixelType::~PixelType()
{
}

mitk::PixelType::PixelType(ItkIOComponentType componentType,
                           ItkIOPixelType pixelType,
                           std::size_t bytesPerComponent,
                           std::size_t numberOfComponents,
                           const std::string &componentTypeName,
                           const std::string &pixelTypeName)
  : m_ComponentType(componentType),
    m_PixelType(pixelType),
    m_ComponentTypeName(componentTypeName),
    m_PixelTypeName(pixelTypeName),
    m_NumberOfComponents(numberOfComponents),
    m_BytesPerComponent(bytesPerComponent)
{
}

bool mitk::PixelType::operator==(const mitk::PixelType &rhs) const
{
  bool returnValue = ( this->m_PixelType == rhs.m_PixelType
                    && this->m_ComponentType == rhs.m_ComponentType
                    && this->m_NumberOfComponents == rhs.m_NumberOfComponents
                    && this->m_BytesPerComponent == rhs.m_BytesPerComponent );

 MITK_DEBUG << "|> mitk::PixelType::operator== rhs, lhs: \n"
            << "| m_BytesPerComponent = " << m_BytesPerComponent << ", " << rhs.m_BytesPerComponent << '\n'
            << "| m_NumberOfComponents = " << m_NumberOfComponents << ", " << rhs.m_NumberOfComponents << '\n'
            << "| m_PixelTypeName = " << m_PixelTypeName << ", " << rhs.m_PixelTypeName << '\n'
            << "| m_ComponentTypeName = " << m_ComponentTypeName << ", " << rhs.m_ComponentTypeName << '\n'
            << "| m_PixelType = " << m_PixelType << ", " << rhs.m_PixelType << '\n'
            << "| m_ComponentType = " << m_ComponentType << ", " << rhs.m_ComponentType
            << ", returnValue = " << returnValue << (returnValue ? "[True]" : "[False]") << ". <|";

  return returnValue;
}

bool mitk::PixelType::operator!=(const mitk::PixelType &rhs) const
{
  return !(this->operator==(rhs));
}

mitk::PixelType mitk::MakePixelType(vtkImageData *vtkimagedata)
{
  int numOfComponents = vtkimagedata->GetNumberOfScalarComponents();

  switch (vtkimagedata->GetScalarType())
  {
    case VTK_BIT:
    case VTK_CHAR:
      return mitk::MakePixelType<char, char>(numOfComponents);
      break;

    case VTK_UNSIGNED_CHAR:
      return mitk::MakePixelType<unsigned char, unsigned char>(numOfComponents);
      break;

    case VTK_SHORT:
      return mitk::MakePixelType<short, short>(numOfComponents);
      break;

    case VTK_UNSIGNED_SHORT:
      return mitk::MakePixelType<unsigned short, unsigned short>(numOfComponents);
      break;

    case VTK_INT:
      return mitk::MakePixelType<int, int>(numOfComponents);
      break;

    case VTK_UNSIGNED_INT:
      return mitk::MakePixelType<unsigned int, unsigned int>(numOfComponents);
      break;

    case VTK_LONG:
      return mitk::MakePixelType<long, long>(numOfComponents);
      break;

    case VTK_UNSIGNED_LONG:
      return mitk::MakePixelType<unsigned long, unsigned long>(numOfComponents);
      break;

    case VTK_FLOAT:
      return mitk::MakePixelType<float, float>(numOfComponents);
      break;

    case VTK_DOUBLE:
      return mitk::MakePixelType<double, double>(numOfComponents);
      break;

    default:
      break;
  }

  mitkThrow() << "tried to make pixeltype from vtkimage of unknown data type(short, char, int, ...)";
}
