1 /* This file is part of Evoral.
2 * Copyright(C) 2008 Dave Robillard <http://drobilla.net>
3 * Copyright(C) 2000-2008 Paul Davis
6 * Evoral is free software; you can redistribute it and/or modify it under the
7 * terms of the GNU General Public License as published by the Free Software
8 * Foundation; either version 2 of the License, or(at your option) any later
11 * Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
12 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #ifndef EVORAL_SMF_HPP
21 #define EVORAL_SMF_HPP
26 struct smf_track_struct;
27 typedef smf_struct smf_t;
28 typedef smf_track_struct smf_track_t;
32 template<typename Time> class Event;
33 template<typename Time> class EventRingBuffer;
35 #define THROW_FILE_ERROR throw(typename SMF<Time>::FileError)
37 /** Standard Midi File (Type 0)
39 template<typename Time>
42 class FileError : public std::exception {
43 const char* what() const throw() { return "Unknown SMF error"; }
46 SMF() : _last_ev_time(0), _smf(0), _smf_track(0), _empty(true) {};
49 int open(const std::string& path, bool create=true, int track=1) THROW_FILE_ERROR;
50 void close() THROW_FILE_ERROR;
52 void seek_to_start() const;
54 uint16_t ppqn() const { return _ppqn; }
55 bool is_empty() const { return _empty; }
56 bool eof() const { assert(false); return true; }
58 Time last_event_time() const { return _last_ev_time; }
61 void append_event_delta(uint32_t delta_t, const Event<Time>& ev);
62 void end_write() THROW_FILE_ERROR;
65 int flush_header() { return 0; }
66 int flush_footer() { return 0; }
69 int read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const;
72 static const uint16_t _ppqn = 19200;
74 Time _last_ev_time; ///< last frame time written, relative to source start
78 smf_track_t* _smf_track;
80 bool _empty; ///< true iff file contains(non-empty) events
83 }; /* namespace Evoral */
85 #endif /* EVORAL_SMF_HPP */