vtkMetaImageReader.h

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

  Program:   Visualization Toolkit
  Module:    vtkMetaImageReader.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkMetaImageReader_h
#define vtkMetaImageReader_h

#include "vtkIOImageModule.h" // For export macro
#include "vtkImageReader2.h"

namespace vtkmetaio
{
class MetaImage;
} // forward declaration

class VTKIOIMAGE_EXPORT vtkMetaImageReader : public vtkImageReader2
{
public:
  vtkTypeMacro(vtkMetaImageReader, vtkImageReader2);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkMetaImageReader* New();

  const char* GetFileExtensions() override { return ".mhd .mha"; }

  const char* GetDescriptiveName() override { return "MetaIO Library: MetaImage"; }

  // These duplicate functions in vtkImageReader2, vtkMedicalImageReader.
  double* GetPixelSpacing() { return this->GetDataSpacing(); }
  int GetWidth() { return (this->GetDataExtent()[1] - this->GetDataExtent()[0] + 1); }
  int GetHeight() { return (this->GetDataExtent()[3] - this->GetDataExtent()[2] + 1); }
  double* GetImagePositionPatient() { return this->GetDataOrigin(); }
  int GetNumberOfComponents() { return this->GetNumberOfScalarComponents(); }
  int GetPixelRepresentation() { return this->GetDataScalarType(); }
  int GetDataByteOrder(void) override;

  vtkGetMacro(RescaleSlope, double);
  vtkGetMacro(RescaleOffset, double);
  vtkGetMacro(BitsAllocated, int);
  vtkGetStringMacro(DistanceUnits);
  vtkGetStringMacro(AnatomicalOrientation);
  vtkGetMacro(GantryAngle, double);
  vtkGetStringMacro(PatientName);
  vtkGetStringMacro(PatientID);
  vtkGetStringMacro(Date);
  vtkGetStringMacro(Series);
  vtkGetStringMacro(ImageNumber);
  vtkGetStringMacro(Modality);
  vtkGetStringMacro(StudyID);
  vtkGetStringMacro(StudyUID);
  vtkGetStringMacro(TransferSyntaxUID);

  int CanReadFile(const char* name) override;

protected:
  vtkMetaImageReader();
  ~vtkMetaImageReader() override;

  // These functions make no sense for this (or most) file readers
  // and should be hidden from the user...but then the getsettest fails.
  /*virtual void SetFilePrefix(const char * arg)
    { vtkImageReader2::SetFilePrefix(arg); }
  virtual void SetFilePattern(const char * arg)
    { vtkImageReader2::SetFilePattern(arg); }
  virtual void SetDataScalarType(int type)
    { vtkImageReader2::SetDataScalarType(type); }
  virtual void SetDataScalarTypeToFloat()
    { this->SetDataScalarType(VTK_FLOAT); }
  virtual void SetDataScalarTypeToDouble()
    { this->SetDataScalarType(VTK_DOUBLE); }
  virtual void SetDataScalarTypeToInt()
    { this->SetDataScalarType(VTK_INT); }
  virtual void SetDataScalarTypeToShort()
    { this->SetDataScalarType(VTK_SHORT); }
  virtual void SetDataScalarTypeToUnsignedShort()
    {this->SetDataScalarType(VTK_UNSIGNED_SHORT);}
  virtual void SetDataScalarTypeToUnsignedChar()
    {this->SetDataScalarType(VTK_UNSIGNED_CHAR);}
  vtkSetMacro(NumberOfScalarComponents, int);
  vtkSetVector6Macro(DataExtent, int);
  vtkSetMacro(FileDimensionality, int);
  vtkSetVector3Macro(DataSpacing, double);
  vtkSetVector3Macro(DataOrigin, double);
  vtkSetMacro(HeaderSize, unsigned long);
  unsigned long GetHeaderSize(unsigned long)
    { return 0; }
  virtual void SetDataByteOrderToBigEndian()
    { this->SetDataByteOrderToBigEndian(); }
  virtual void SetDataByteOrderToLittleEndian()
    { this->SetDataByteOrderToBigEndian(); }
  virtual void SetDataByteOrder(int order)
    { this->SetDataByteOrder(order); }
  vtkSetMacro(FileNameSliceOffset,int);
  vtkSetMacro(FileNameSliceSpacing,int);
  vtkSetMacro(SwapBytes, int);
  virtual int OpenFile()
    { return vtkImageReader2::OpenFile(); }
  virtual void SeekFile(int i, int j, int k)
    { vtkImageReader2::SeekFile(i, j, k); }
  vtkSetMacro(FileLowerLeft, int);
  virtual void ComputeInternalFileName(int slice)
    { vtkImageReader2::ComputeInternalFileName(slice); }
  vtkGetStringMacro(InternalFileName);
  const char * GetDataByteOrderAsString(void)
    { return vtkImageReader2::GetDataByteOrderAsString(); }
  unsigned long GetHeaderSize(void)
    { return vtkImageReader2::GetHeaderSize(); }*/

  void ExecuteInformation() override;
  void ExecuteDataWithInformation(vtkDataObject* out, vtkInformation* outInfo) override;
  int RequestInformation(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;

private:
  vtkMetaImageReader(const vtkMetaImageReader&) = delete;
  void operator=(const vtkMetaImageReader&) = delete;

  vtkmetaio::MetaImage* MetaImagePtr;

  double GantryAngle;
  char PatientName[255];
  char PatientID[255];
  char Date[255];
  char Series[255];
  char Study[255];
  char ImageNumber[255];
  char Modality[255];
  char StudyID[255];
  char StudyUID[255];
  char TransferSyntaxUID[255];

  double RescaleSlope;
  double RescaleOffset;
  int BitsAllocated;
  char DistanceUnits[255];
  char AnatomicalOrientation[255];
};

#endif