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gdcmPhotometricInterpretation.h

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

  Program: GDCM (Grassroots DICOM). A DICOM library
  Module:  $URL$

  Copyright (c) 2006-2010 Mathieu Malaterre
  All rights reserved.
  See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html 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 GDCMPHOTOMETRICINTERPRETATION_H
#define GDCMPHOTOMETRICINTERPRETATION_H

#include "gdcmTypes.h"
#include <iostream>

namespace gdcm
{

class TransferSyntax;
/**
 * \brief Class to represent an PhotometricInterpretation
 */
00029 class GDCM_EXPORT PhotometricInterpretation
{
public:
  typedef enum {
    UNKNOW = 0,
    MONOCHROME1,
    MONOCHROME2,
    PALETTE_COLOR,
    RGB,
    HSV,
    ARGB, // retired
    CMYK,
    YBR_FULL,
    YBR_FULL_422,
    YBR_PARTIAL_422,
    YBR_PARTIAL_420,
    YBR_ICT,
    YBR_RCT,
    // PALETTE_COLOR ?
    //MONOCHROME = MONOCHROME1 | MONOCHROME2,
    //COLOR      = RGB | HSV | ARGB | CMYK | YBR_FULL | YBR_FULL_422 | YBR_PARTIAL_422 | YBR_PARTIAL_420 | YBR_ICT | YBR_RCT,
    PI_END  // Helpfull for internal implementation
  } PIType; // PhotometricInterpretationType

  PhotometricInterpretation(PIType pi = UNKNOW):PIField(pi) {}
  
  static const char *GetPIString(PIType pi);

  const char *GetString() const;

  // You need to make sure end of string is \0
  static PIType GetPIType(const char *pi);

  static bool IsRetired(PIType pi);

  bool IsLossy() const;
  bool IsLossless() const;

  /// return the value for Sample Per Pixel associated with a particular Photometric Interpretation
  unsigned short GetSamplesPerPixel() const;

  // TODO
  // not all PhotometricInterpretation are allowed for compressed Transfer 
  // syntax
  // static bool IsAllowedForCompressedTS(PIType pi);

  friend std::ostream& operator<<(std::ostream& os, const PhotometricInterpretation& pi);

  operator PIType () const { return PIField; }

  // Will return whether current PhotometricInterpretation is the same Color Space as input:
  // eg. RGB and YBR_RCT are
  bool IsSameColorSpace( PhotometricInterpretation const &pi ) const;

  //static PIType GetEquivalent(TransferSyntax const &ts);

private:
  PIType PIField;
};
//-----------------------------------------------------------------------------
inline std::ostream& operator<<(std::ostream& os, const PhotometricInterpretation &val)
{
  const char *s = PhotometricInterpretation::GetPIString(val.PIField);
  os << (s ? s : "");
  return os;
}


} // end namespace gdcm

#endif //GDCMPHOTOMETRICINTERPRETATION_H

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