pngimage.hpp

// ***************************************************************** -*- C++ -*-
/*
 * Copyright (C) 2004-2021 Exiv2 authors
 * This program is part of the Exiv2 distribution.
 *
 * 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 2
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
 */
#ifndef PNGIMAGE_HPP_
#define PNGIMAGE_HPP_
 
// *****************************************************************************
#include "exiv2lib_export.h"
 
// included header files
#include "image.hpp"
 
// *****************************************************************************
// namespace extensions
namespace Exiv2
{
 
// *****************************************************************************
// class definitions
 
    // Add PNG to the supported image formats
    namespace ImageType
    {
        const int png = 6;          
    }

    class EXIV2API PngImage : public Image {
    public:


        PngImage(BasicIo::AutoPtr io, bool create);


        void readMetadata();
        void writeMetadata();

        void printStructure(std::ostream& out, PrintStructureOption option,int depth);


        std::string mimeType() const;
 
    private:


        PngImage(const PngImage& rhs);
        PngImage& operator=(const PngImage& rhs);
        void doWriteMetadata(BasicIo& oIo);
 
        std::string profileName_;
 
    }; // class PngImage
 
// *****************************************************************************
// template, inline and free functions
 
    // These could be static private functions on Image subclasses but then
    // ImageFactory needs to be made a friend.
    EXIV2API Image::AutoPtr newPngInstance(BasicIo::AutoPtr io, bool create);

    EXIV2API bool isPngType(BasicIo& iIo, bool advance);
 
}                                       // namespace Exiv2
 
#endif                                  // #ifndef PNGIMAGE_HPP_