rtkXimImageIO.h

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/*=========================================================================
 *
 *  Copyright RTK 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
 *
 *         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 rtkXimImageIO_h
#define rtkXimImageIO_h

#include "RTKExport.h"
#include "rtkMacro.h"

// itk include
#include <itkImageIOBase.h>

#if defined(_MSC_VER) && (_MSC_VER < 1600)
// SR: taken from
// #include "msinttypes/stdint.h"
#else
#  include <cstdint>
#endif

namespace rtk
{

class RTK_EXPORT XimImageIO : public itk::ImageIOBase
{
public:
  using Self = XimImageIO;
  using Superclass = itk::ImageIOBase;
  using Pointer = itk::SmartPointer<Self>;
  using PixelType = signed short int;
  using Int4 = itk::int32_t; // int of 4 bytes as in xim docs

  typedef struct xim_header
  {
    // Actual Header:
    char sFileType[32];
    Int4 FileVersion;
    Int4 SizeX;
    Int4 SizeY;
    Int4 dBitsPerPixel;
    Int4 dBytesPerPixel;
    Int4 dCompressionIndicator;
    Int4 lookUpTableSize;
    Int4 compressedPixelBufferSize;
    Int4 unCompressedPixelBufferSize;
    // Header after pixel-data:
    Int4         binsInHistogram;
    Int4 *       histogramData;
    Int4         numberOfProperties;
    unsigned int nPixelOffset;
    double       dCollX1;
    double       dCollX2;
    double       dCollY1;
    double       dCollY2;
    double       dCollRtn;
    double       dCouchVrt;
    double       dCouchLng;
    double       dCouchLat;
    double       dIDUResolutionX;   // MUST BE CALCULATED
    double       dIDUResolutionY;   //
    double       dImageResolutionX; //
    double       dImageResolutionY; //
    double       dEnergy;
    double       dDoseRate;
    double       dXRayKV;
    double       dXRayMA;
    double       dCTProjectionAngle; // KVSourceRtn in file
    double       dDetectorOffsetX;   // KVDetectorLat
    double       dDetectorOffsetY;   // KVDetectorLng
    double       dCTNormChamber;
    double       dGatingTimeTag;
    double       dGating4DInfoX;
    double       dGating4DInfoY;
    double       dGating4DInfoZ;
    // double dGating4DInfoTime;
  } Xim_header;

  XimImageIO()
    : Superclass()
  {}

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(XimImageIO);

  /*-------- This part of the interface deals with reading data. ------ */
  void
  ReadImageInformation() override;

  bool
  CanReadFile(const char * FileNameToRead) override;

  void
  Read(void * buffer) override;

  /*-------- This part of the interfaces deals with writing data. ----- */
  virtual void
  WriteImageInformation(bool /*keepOfStream*/)
  {}

  void
  WriteImageInformation() override
  {
    WriteImageInformation(false);
  }

  bool
  CanWriteFile(const char * filename) override;

  void
  Write(const void * buffer) override;

private:
  template <typename T>
  size_t
  SetPropertyValue(char * property_name, Int4 value_length, FILE * fp, Xim_header * xim);

  int  m_ImageDataStart;
  Int4 m_BytesPerPixel;

}; // end class XimImageIO

} // namespace rtk

#endif /* end #define __rtkXimImageIO_h */