gdcmImageCodec.h

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

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

  Copyright (c) 2006-2009 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 __gdcmImageCodec_h
#define __gdcmImageCodec_h

#include "gdcmCodec.h"
#include "gdcmPhotometricInterpretation.h"
#include "gdcmLookupTable.h"
#include "gdcmSmartPointer.h"
#include "gdcmPixelFormat.h"

namespace gdcm
{
  
/**
 * \brief ImageCodec
 * \note Main codec, this is a central place for all implementation
 */
00031 class GDCM_EXPORT ImageCodec : public Codec
{
  friend class ImageChangePhotometricInterpretation;
public:
  ImageCodec();
  ~ImageCodec();
00037   bool CanDecode(TransferSyntax const &) const { return false; }
  bool Decode(DataElement const &is, DataElement &os);
  bool IsLossy() const;

  virtual bool GetHeaderInfo(std::istream &is, TransferSyntax &ts);

protected:
  bool Decode(std::istream &is, std::ostream &os);
  virtual bool IsValid(PhotometricInterpretation const &pi);
public:

  unsigned int GetPlanarConfiguration() const
    {
    return PlanarConfiguration;
    }
  void SetPlanarConfiguration(unsigned int pc)
    {
    assert( pc == 0 || pc == 1 );
    PlanarConfiguration = pc;
    }

  PixelFormat &GetPixelFormat()
    {
    return PF;
    }
  const PixelFormat &GetPixelFormat() const
    {
    return PF;
    }
  virtual void SetPixelFormat(PixelFormat const &pf)
    {
    PF = pf;
    }
  const PhotometricInterpretation &GetPhotometricInterpretation() const;
  void SetPhotometricInterpretation(PhotometricInterpretation const &pi);

  bool GetNeedByteSwap() const
    {
    return NeedByteSwap;
    }
  void SetNeedByteSwap(bool b)
    {
    NeedByteSwap = b;
    }
  void SetNeedOverlayCleanup(bool b)
    {
    NeedOverlayCleanup = b;
    }
  void SetLUT(LookupTable const &lut)
    {
    LUT = SmartPointer<LookupTable>( const_cast<LookupTable*>(&lut) );
    }
  const LookupTable &GetLUT() const
    {
    return *LUT;
    }

  void SetDimensions(const unsigned int *d)
    {
    Dimensions[0] = d[0];
    Dimensions[1] = d[1];
    Dimensions[2] = d[2];
    }
  const unsigned int *GetDimensions() const { return Dimensions; }
  void SetNumberOfDimensions(unsigned int dim);
protected:
  bool RequestPlanarConfiguration;
  bool RequestPaddedCompositePixelCode;
//private:
  unsigned int PlanarConfiguration;
  PhotometricInterpretation PI;
  PixelFormat PF;
  bool NeedByteSwap;
  bool NeedOverlayCleanup;

  typedef SmartPointer<LookupTable> LUTPtr;
  LUTPtr LUT;
  unsigned int Dimensions[3]; // FIXME
  unsigned int NumberOfDimensions;
  bool LossyFlag;

  bool DoOverlayCleanup(std::istream &is, std::ostream &os);
  bool DoByteSwap(std::istream &is, std::ostream &os);
  bool DoYBR(std::istream &is, std::ostream &os);
  bool DoPlanarConfiguration(std::istream &is, std::ostream &os);
  bool DoSimpleCopy(std::istream &is, std::ostream &os);
  bool DoPaddedCompositePixelCode(std::istream &is, std::ostream &os);
  bool DoInvertMonochrome(std::istream &is, std::ostream &os);

  //template <typename T>
  //bool DoInvertPlanarConfiguration(T *output, const T *input, uint32_t length);
};

} // end namespace gdcm

#endif //__gdcmImageCodec_h