itkPNGImageIO.h

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/*=========================================================================
 *
 *  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.
 *
 *=========================================================================*/
#ifndef itkPNGImageIO_h
#define itkPNGImageIO_h
#include "ITKIOPNGExport.h"
 
 
#include "itkImageIOBase.h"
 
namespace itk
{
class ITKIOPNG_EXPORT PNGImageIO : public ImageIOBase
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(PNGImageIO);

  using Self = PNGImageIO;
  using Superclass = ImageIOBase;
  using Pointer = SmartPointer<Self>;
 
  using RGBPixelType = RGBPixel<unsigned char>;
  using PaletteType = std::vector<RGBPixelType>;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(PNGImageIO);

  itkGetConstReferenceMacro(ColorPalette, PaletteType);

  void
  SetColorPalette(const PaletteType _arg)
  {
    if (this->m_ColorPalette != _arg)
    {
      this->m_ColorPalette = _arg;
      this->Modified();
    }
  }

 
  /*-------- This part of the interface deals with reading data. ------ */

  bool
  CanReadFile(const char *) override;

  void
  ReadImageInformation() override;

  void
  Read(void * buffer) override;

  virtual void
  ReadVolume(void * buffer);
 
  /*-------- This part of the interfaces deals with writing data. ----- */

  bool
  CanWriteFile(const char *) override;

  void
  WriteImageInformation() override;

  void
  Write(const void * buffer) override;
 
protected:
  PNGImageIO();
  ~PNGImageIO() override;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
  void
  WriteSlice(const std::string & fileName, const void * const buffer);
 
 
  PaletteType m_ColorPalette{};
};
} // end namespace itk
 
#endif // itkPNGImageIO_h