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

  Program:   Visualization Toolkit
  Module:    vtkTIFFReader.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 vtkTIFFReader_h
#define vtkTIFFReader_h

#include "vtkImageReader2.h"

class VTKIOIMAGE_EXPORT vtkTIFFReader : public vtkImageReader2
{
public:
  static vtkTIFFReader *New();
  vtkTypeMacro(vtkTIFFReader, vtkImageReader2)
  virtual void PrintSelf(ostream& os, vtkIndent indent);

  virtual int CanReadFile(const char* fname);


  virtual const char* GetFileExtensions()
    {
    return ".tif .tiff";
    }


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


  void SetOrientationType(unsigned int orientationType);
  vtkGetMacro(OrientationType, unsigned int)


  vtkGetMacro(OrientationTypeSpecifiedFlag, bool)


  vtkSetMacro(OriginSpecifiedFlag, bool)
  vtkGetMacro(OriginSpecifiedFlag, bool)
  vtkBooleanMacro(OriginSpecifiedFlag, bool)


  vtkSetMacro(SpacingSpecifiedFlag, bool)
  vtkGetMacro(SpacingSpecifiedFlag, bool)
  vtkBooleanMacro(SpacingSpecifiedFlag, bool)

protected:
  vtkTIFFReader();
  ~vtkTIFFReader();

  enum { NOFORMAT, RGB, GRAYSCALE, PALETTE_RGB, PALETTE_GRAYSCALE, OTHER };

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

private:
  vtkTIFFReader(const vtkTIFFReader&);  // Not implemented.
  void operator=(const vtkTIFFReader&);  // Not implemented.


  template<typename T>
  int EvaluateImageAt(T* out, T* in);


  void GetColor(int index,
                unsigned short *r, unsigned short *g, unsigned short *b);

  // To support Zeiss images
  void ReadTwoSamplesPerPixelImage(void *out,
                                   unsigned int vtkNotUsed(width),
                                   unsigned int height);

  unsigned int GetFormat();

  void Initialize();


  template<typename T>
  void ReadImageInternal(T* buffer);


  template<typename T>
  void ReadVolume(T* buffer);

  void ReadTiles(void* buffer);


  template<typename T>
  void ReadGenericImage(T* out, unsigned int width, unsigned int height);


  template <typename T>
  void Process(T *outPtr, int outExtent[6], vtkIdType outIncr[3]);


  template <typename T>
  void Process2(T *outPtr, int *outExt);

  class vtkTIFFReaderInternal;

  unsigned short *ColorRed;
  unsigned short *ColorGreen;
  unsigned short *ColorBlue;
  int TotalColors;
  unsigned int ImageFormat;
  vtkTIFFReaderInternal *InternalImage;
  int OutputExtent[6];
  vtkIdType OutputIncrements[3];
  unsigned int OrientationType;
  bool OrientationTypeSpecifiedFlag;
  bool OriginSpecifiedFlag;
  bool SpacingSpecifiedFlag;
};

#endif