OldSMF.hpp

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/* This file is part of Evoral.
 * Copyright(C) 2008 David Robillard <http://drobilla.net>
 * Copyright(C) 2000-2008 Paul Davis
 *
 * Evoral 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.
 *
 * Evoral 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef EVORAL_OLD_SMF_HPP
#define EVORAL_OLD_SMF_HPP

#include "evoral/visibility.h"

namespace Evoral {

template<typename Time> class Event;

template<typename Time>
class /*LIBEVORAL_API*/ SMF {
public:
        SMF();
        virtual ~SMF();

        void seek_to_start() const;

        uint16_t ppqn()     const { return _ppqn; }
        bool     is_empty() const { return _empty; }
        bool     eof()      const { return feof(_fd); }

        Time last_event_time() const { return _last_ev_time; }

        void begin_write();
        void append_event_delta(uint32_t delta_t, const Event<Time>& ev);
        void end_write() THROW_FILE_ERROR;

        void flush();
        int  flush_header();
        int  flush_footer();

protected:
        int  open(const std::string& path) THROW_FILE_ERROR;
        void close() THROW_FILE_ERROR;

        int read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const;

private:
        void seek_to_footer_position();

        void write_footer();

        void     write_chunk_header(const char id[4], uint32_t length);
        void     write_chunk(const char id[4], uint32_t length, void* data);
        size_t   write_var_len(uint32_t val);
        uint32_t read_var_len() const;

        static const uint16_t _ppqn = 19200;

        FILE*    _fd;
        Time     _last_ev_time; 
        uint32_t _track_size;
        uint32_t _header_size; 
        bool     _empty; 
};

}; /* namespace Evoral */

#endif /* EVORAL_OLD_SMF_HPP */