ebml_element.h

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/* Tide
 *
 * Header file for the EBML element object.
 *
 * Copyright 2011 Geoffrey Biggs geoffrey.biggs@aist.go.jp
 *     RT-Synthesis Research Group
 *     Intelligent Systems Research Institute,
 *     National Institute of Advanced Industrial Science and Technology (AIST),
 *     Japan
 *     All rights reserved.
 *
 * This file is part of Tide.
 *
 * Tide 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 2.1 of the License, or
 * (at your option) any later version.
 *
 * Tide 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 Tide. If not, see <http://www.gnu.org/licenses/>.
 */

#if !defined(TIDE_EBML_ELEMENT_H_)
#define TIDE_EBML_ELEMENT_H_

#include <tide/el_ids.h>
#include <tide/master_element.h>
#include <tide/tide_config.h>
#include <tide/string_element.h>
#include <tide/uint_element.h>
#include <tide/win_dll.h>

#include <string>


namespace tide
{
    class TIDE_EXPORT EBMLElement : public MasterElement
    {
        public:
            EBMLElement(std::string const& doc_type="tide");

            virtual ~EBMLElement() {};

            unsigned int version() const { return ver_.value(); }
            unsigned int read_version() const { return read_ver_.value(); }
            unsigned int max_id_length() const
                { return max_id_length_.value(); }
            void max_id_length(unsigned int max_id_length)
                { max_id_length_.value(max_id_length); }
            unsigned int max_size_length() const
                { return max_size_length_.value(); }
            void max_size_length(unsigned int max_size_length)
                { max_size_length_.value(max_size_length); }
            std::string doc_type() const { return doc_type_.value(); }
            void doc_type(std::string doc_type) { doc_type_.value(doc_type); }
            unsigned int doc_version() const { return doc_type_ver_.value(); }
            void doc_version(unsigned int doc_version)
                { doc_type_ver_.value(doc_version); }
            unsigned int doc_read_version() const
                { return doc_type_read_ver_.value(); }
            void doc_read_version(unsigned int doc_read_version)
                { doc_type_read_ver_.value(doc_read_version); }

            virtual std::streamsize write_body(std::ostream& output);

        protected:
            UIntElement ver_;
            UIntElement read_ver_;
            UIntElement max_id_length_;
            UIntElement max_size_length_;
            StringElement doc_type_;
            UIntElement doc_type_ver_;
            UIntElement doc_type_read_ver_;

            virtual std::streamsize body_size() const;

            virtual std::streamsize read_body(std::istream& input,
                    std::streamsize size);

            void set_defaults_();
    }; // class Element
}; // namespace tide


#endif // TIDE_EBML_ELEMENT_H_