/**
 * Orthanc - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 * Copyright (C) 2017-2023 Osimis S.A., Belgium
 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * 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
 * Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 **/


#include "../PrecompiledHeadersWSI.h"
#include "OpenSlidePyramid.h"

#include <Compatibility.h>  // For std::unique_ptr
#include <Images/ImageProcessing.h>
#include <OrthancException.h>
#include <SerializationToolbox.h>
#include <Logging.h>

#include <memory>

namespace OrthancWSI
{
  void OpenSlidePyramid::ReadRegion(Orthanc::ImageAccessor& target,
                                    unsigned int level,
                                    unsigned int x,
                                    unsigned int y)
  {
    std::unique_ptr<Orthanc::ImageAccessor> source(image_.ReadRegion(level, x, y, target.GetWidth(), target.GetHeight()));
    Orthanc::ImageProcessing::Convert(target, *source);
  }


  OpenSlidePyramid::OpenSlidePyramid(const std::string& path,
                                     unsigned int tileWidth,
                                     unsigned int tileHeight) :
    image_(path),
    tileWidth_(tileWidth),
    tileHeight_(tileHeight)
  {
  }


  bool OpenSlidePyramid::LookupImagedVolumeSize(float& width,
                                                float& height) const
  {
    std::string s;
    double mppx;
    double mppy;

    if (image_.LookupProperty(s, "openslide.mpp-x") &&
        Orthanc::SerializationToolbox::ParseDouble(mppx, s) &&
        image_.LookupProperty(s, "openslide.mpp-y") &&
        Orthanc::SerializationToolbox::ParseDouble(mppy, s))
    {
      // In the 2 lines below, remember to switch X/Y when going from physical to pixel coordinates!
      width = mppy / 1000.0 * static_cast<double>(image_.GetLevelHeight(0));
      height = mppx / 1000.0 * static_cast<double>(image_.GetLevelWidth(0));
      return true;
    }
    else
    {
      return false;
    }
  }
}