/**
 * Orthanc - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 * Copyright (C) 2017-2020 Osimis S.A., Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 **/


#pragma once

#if !defined(ORTHANC_ENABLE_PNG)
#  error The macro ORTHANC_ENABLE_PNG must be defined
#endif

#if ORTHANC_ENABLE_PNG != 1
#  error PNG support must be enabled to include this file
#endif

#include "IImageWriter.h"
#include "../Compatibility.h"  // For ORTHANC_OVERRIDE

#include <boost/shared_ptr.hpp>

namespace Orthanc
{
  class ORTHANC_PUBLIC PngWriter : public IImageWriter
  {
  protected:
#if ORTHANC_SANDBOXED == 0
    virtual void WriteToFileInternal(const std::string& filename,
                                     unsigned int width,
                                     unsigned int height,
                                     unsigned int pitch,
                                     PixelFormat format,
                                     const void* buffer) ORTHANC_OVERRIDE;
#endif

    virtual void WriteToMemoryInternal(std::string& png,
                                       unsigned int width,
                                       unsigned int height,
                                       unsigned int pitch,
                                       PixelFormat format,
                                       const void* buffer) ORTHANC_OVERRIDE;

  private:
    struct PImpl;
    boost::shared_ptr<PImpl> pimpl_;

    void Compress(unsigned int width,
                  unsigned int height,
                  unsigned int pitch,
                  PixelFormat format);

    void Prepare(unsigned int width,
                 unsigned int height,
                 unsigned int pitch,
                 PixelFormat format,
                 const void* buffer);

  public:
    PngWriter();

    ~PngWriter();
  };
}