matroskavideo.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 MATROSKAVIDEO_HPP_
#define MATROSKAVIDEO_HPP_
 
// *****************************************************************************
#include "exiv2lib_export.h"
 
// included header files
#include "image.hpp"
 
// *****************************************************************************
// namespace extensions
namespace Exiv2 {
 
// *****************************************************************************
// class definitions
 
    // Add MKV to the supported image formats
    namespace ImageType {
        const int mkv = 21; 
    }
 
    // Todo: Should be hidden
    struct EXIV2LIB_DEPRECATED MatroskaTags {
        uint64_t val_;                          
        const char* label_;                     

       bool operator==(uint64_t key) const { return val_ == key; }
    }; // struct TagDetails

    class EXIV2LIB_DEPRECATED_EXPORT MatroskaVideo : public Image {
    public:


        MatroskaVideo(BasicIo::AutoPtr io);


        void readMetadata();
        void writeMetadata();


        std::string mimeType() const;
 
    protected:
        uint32_t findBlockSize(byte b);
        void decodeBlock();
        void contentManagement(const MatroskaTags* mt, const byte* buf, long size);
        void aspectRatio();
 
    private:


        MatroskaVideo(const MatroskaVideo& rhs);
        MatroskaVideo& operator=(const MatroskaVideo& rhs);
 
    private:
        bool continueTraversing_;
        uint64_t height_, width_;
 
    }; // class MatroskaVideo
 
// *****************************************************************************
// template, inline and free functions
 
    // These could be static private functions on Image subclasses but then
    // ImageFactory needs to be made a friend.
    EXIV2LIB_DEPRECATED_EXPORT Image::AutoPtr newMkvInstance(BasicIo::AutoPtr io, bool create);

    EXIV2LIB_DEPRECATED_EXPORT bool isMkvType(BasicIo& iIo, bool advance);
 
}                                       // namespace Exiv2
 
#endif                                  // #ifndef MATROSKAVIDEO_HPP_