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/* This file is part of Evoral.
* Copyright(C) 2008 David Robillard <http://drobilla.net>
* Copyright(C) 2000-2008 Paul Davis
* Author: Hans Baier
*
* 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_SMF_HPP
#define EVORAL_SMF_HPP
#include <cassert>
#include "evoral/types.hpp"
struct smf_struct;
struct smf_track_struct;
typedef smf_struct smf_t;
typedef smf_track_struct smf_track_t;
namespace Evoral {
#define THROW_FILE_ERROR throw(FileError)
/** Standard Midi File.
* Currently only tempo-based time of a given PPQN is supported.
*/
class SMF {
public:
class FileError : public std::exception {
public:
FileError (std::string const & n) : _file_name (n) {}
~FileError () throw () {}
const char* what() const throw() { return "Unknown SMF error"; }
std::string file_name () const { return _file_name; }
private:
std::string _file_name;
};
SMF() : _smf(0), _smf_track(0), _empty(true) {};
virtual ~SMF();
static bool test(const std::string& path);
int open(const std::string& path, int track=1) THROW_FILE_ERROR;
int create(const std::string& path, int track=1, uint16_t ppqn=19200) THROW_FILE_ERROR;
void close() THROW_FILE_ERROR;
const std::string& file_path() const { return _file_path; };
void seek_to_start() const;
int seek_to_track(int track);
int read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf, event_id_t* note_id) const;
uint16_t num_tracks() const;
uint16_t ppqn() const;
bool is_empty() const { return _empty; }
void begin_write();
void append_event_delta(uint32_t delta_t, uint32_t size, const uint8_t* buf, event_id_t note_id);
void end_write() THROW_FILE_ERROR;
void flush() {};
double round_to_file_precision (double val) const;
protected:
void set_path (const std::string& p);
private:
std::string _file_path;
smf_t* _smf;
smf_track_t* _smf_track;
bool _empty; ///< true iff file contains(non-empty) events
};
}; /* namespace Evoral */
#endif /* EVORAL_SMF_HPP */
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