/**
 * Stone of Orthanc
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * In addition, as a special exception, the copyright holders of this
 * program give permission to link the code of its release with the
 * OpenSSL project's "OpenSSL" library (or with modified versions of it
 * that use the same license as the "OpenSSL" library), and distribute
 * the linked executables. You must obey the GNU General Public License
 * in all respects for all of the code used other than "OpenSSL". If you
 * modify file(s) with this exception, you may extend this exception to
 * your version of the file(s), but you are not obligated to do so. If
 * you do not wish to do so, delete this exception statement from your
 * version. If you delete this exception statement from all source files
 * in the program, then also delete it here.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 **/


#pragma once

#include "DicomDataset.h"

#include "../../Resources/Orthanc/Core/Images/ImageAccessor.h"

namespace OrthancStone
{
  /**
   * This class is responsible for converting the pixel format of a
   * DICOM frame coming from Orthanc, into a pixel format that is
   * suitable for Stone, given the relevant DICOM tags:
   * - Color frames will stay in the RGB24 format.
   * - Grayscale frames will be converted to the Float32 format.
   **/
  class DicomFrameConverter
  {
  private:
    bool    isSigned_;
    bool    isColor_;
    bool    hasRescale_;
    float   rescaleIntercept_;
    float   rescaleSlope_;
    float   defaultWindowCenter_;
    float   defaultWindowWidth_;

    void SetDefaultParameters();

  public:
    DicomFrameConverter()
    {
      SetDefaultParameters();
    }

    Orthanc::PixelFormat GetExpectedPixelFormat() const;

    void ReadParameters(const DicomDataset& dicom);

    float GetDefaultWindowCenter() const
    {
      return defaultWindowCenter_;
    }
    
    float GetDefaultWindowWidth() const
    {
      return defaultWindowWidth_;
    }

    void ConvertFrame(std::auto_ptr<Orthanc::ImageAccessor>& source) const;  
  };
}