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.
38 * Currently only tempo-based time of a given PPQN is supported.
40 template<typename Time>
43 class FileError : public std::exception {
44 const char* what() const throw() { return "Unknown SMF error"; }
47 SMF() : _smf(0), _smf_track(0), _empty(true) {};
50 int open(const std::string& path, int track=1) THROW_FILE_ERROR;
51 int create(const std::string& path, int track=1, uint16_t ppqn=19200) THROW_FILE_ERROR;
52 void close() THROW_FILE_ERROR;
54 const std::string& path() const { return _path; };
56 void seek_to_start() const;
57 int seek_to_track(int track);
59 int read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const;
61 uint16_t num_tracks() const;
62 uint16_t ppqn() const;
63 bool is_empty() const { return _empty; }
64 bool eof() const { assert(false); return true; }
67 void append_event_delta(uint32_t delta_t, uint32_t size, const uint8_t* buf);
68 void end_write() THROW_FILE_ERROR;
75 smf_track_t* _smf_track;
77 bool _empty; ///< true iff file contains(non-empty) events
80 }; /* namespace Evoral */
82 #endif /* EVORAL_SMF_HPP */