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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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
*
* http://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 PNGImageIO
*
* \brief ImageIO object for reading and writing PNG images
*
* \ingroup IOFilters
*
* \ingroup ITKIOPNG
*/
class ITKIOPNG_EXPORT PNGImageIO:public ImageIOBase
{
public:
/** Standard class typedefs. */
typedef PNGImageIO Self;
typedef ImageIOBase Superclass;
typedef SmartPointer< Self > Pointer;
typedef RGBPixel< unsigned char > RGBPixelType;
typedef std::vector< RGBPixelType > PaletteType;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(PNGImageIO, ImageIOBase);
/** Set/Get the level of compression for the output images.
* 0-9; 0 = none, 9 = maximum. */
itkSetMacro(CompressionLevel, int);
itkGetConstMacro(CompressionLevel, int);
/** Get a const ref to the palette of the image. In the case of non palette
* image or ExpandRGBPalette set to true, a vector of size
* 0 is returned */
itkGetConstReferenceMacro(ColorPalette, PaletteType);
/*-------- This part of the interface deals with reading data. ------ */
/** Determine the file type. Returns true if this ImageIO can read the
* file specified. */
virtual bool CanReadFile(const char *) ITK_OVERRIDE;
/** Set the spacing and dimension information for the set filename. */
virtual void ReadImageInformation() ITK_OVERRIDE;
/** Reads the data from disk into the memory buffer provided. */
virtual void Read(void *buffer) ITK_OVERRIDE;
/** Reads 3D data from multiple files assuming one slice per file. */
virtual void ReadVolume(void *buffer);
/*-------- This part of the interfaces deals with writing data. ----- */
/** Determine the file type. Returns true if this ImageIO can write the
* file specified. */
virtual bool CanWriteFile(const char *) ITK_OVERRIDE;
/** Writes the spacing and dimensions of the image.
* Assumes SetFileName has been called with a valid file name. */
virtual void WriteImageInformation() ITK_OVERRIDE;
/** Writes the data to disk from the memory buffer provided. Make sure
* that the IORegion has been set properly. */
virtual void Write(const void *buffer) ITK_OVERRIDE;
protected:
PNGImageIO();
~PNGImageIO() ITK_OVERRIDE;
virtual void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
void WriteSlice(const std::string & fileName, const void *buffer);
/** Determines the level of compression for written files.
* Range 0-9; 0 = none, 9 = maximum , default = 4 */
int m_CompressionLevel;
PaletteType m_ColorPalette;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(PNGImageIO);
};
} // end namespace itk
#endif // itkPNGImageIO_h
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