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

  Program:   Visualization Toolkit
  Module:    vtkDICOMImageReader.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 vtkDICOMImageReader_h
#define vtkDICOMImageReader_h

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

//BTX
class vtkDICOMImageReaderVector;
class DICOMParser;
class DICOMAppHelper;
//ETX

class VTKIOIMAGE_EXPORT vtkDICOMImageReader : public vtkImageReader2
{
 public:

  static vtkDICOMImageReader *New();
  vtkTypeMacro(vtkDICOMImageReader,vtkImageReader2);

  void PrintSelf(ostream& os, vtkIndent indent);


  void SetFileName(const char* fn)
  {
    delete [] this->DirectoryName;
    delete [] this->FileName;
    this->DirectoryName = NULL;
    this->FileName = NULL;
    this->vtkImageReader2::SetFileName(fn);
  }

  void SetDirectoryName(const char* dn);


  vtkGetStringMacro(DirectoryName);

  double* GetPixelSpacing();

  int GetWidth();

  int GetHeight();

  float* GetImagePositionPatient();

  float* GetImageOrientationPatient();

  int GetBitsAllocated();

  int GetPixelRepresentation();

  int GetNumberOfComponents();

  const char* GetTransferSyntaxUID();

  float GetRescaleSlope();

  float GetRescaleOffset();

  const char* GetPatientName();

  const char* GetStudyUID();

  const char* GetStudyID();

  float GetGantryAngle();

  //
  // Can I read the file?
  //
  virtual int CanReadFile(const char* fname);

  //
  // What file extensions are supported?
  //
  virtual const char* GetFileExtensions()
  {
    return ".dcm";
  }


  virtual const char* GetDescriptiveName()
  {
    return "DICOM";
  }

protected:
  //
  // Setup the volume size
  //
  void SetupOutputInformation(int num_slices);

  virtual void ExecuteInformation();
  virtual void ExecuteDataWithInformation(vtkDataObject *out, vtkInformation *outInfo);

  //
  // Constructor
  //
  vtkDICOMImageReader();

  //
  // Destructor
  //
  virtual ~vtkDICOMImageReader();

  //
  // Instance of the parser used to parse the file.
  //
  DICOMParser* Parser;

  //
  // Instance of the callbacks that get the data from the file.
  //
  DICOMAppHelper* AppHelper;

  //
  // vtkDICOMImageReaderVector wants to be a PIMPL and it will be, but not quite yet.
  //
  vtkDICOMImageReaderVector* DICOMFileNames;
  char* DirectoryName;

  char* PatientName;
  char* StudyUID;
  char* StudyID;
  char* TransferSyntaxUID;

  // DICOMFileNames accessor methods for subclasses:
  int GetNumberOfDICOMFileNames();
  const char* GetDICOMFileName(int index);
private:
  vtkDICOMImageReader(const vtkDICOMImageReader&);  // Not implemented.
  void operator=(const vtkDICOMImageReader&);  // Not implemented.

};

#endif