1 /* This file is part of Evoral.
2 * Copyright (C) 2008 David Robillard <http://drobilla.net>
3 * Copyright (C) 2000-2008 Paul Davis
5 * Evoral is free software; you can redistribute it and/or modify it under the
6 * terms of the GNU General Public License as published by the Free Software
7 * Foundation; either version 2 of the License, or (at your option) any later
10 * Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
11 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
12 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef EVORAL_TYPE_MAP_HPP
20 #define EVORAL_TYPE_MAP_HPP
22 #include "evoral/visibility.h"
23 #include "evoral/types.hpp"
29 /** The applications passes one of these which provide the implementation
30 * with required information about event types in an opaque, type neutral way
32 class /*LIBEVORAL_API*/ TypeMap {
36 /** Return true iff the type is a MIDI event.
37 * The contents of the event will be used for specific ID
39 virtual bool type_is_midi(uint32_t type) const = 0;
41 /** Return the MIDI type (ie status byte with channel 0) for a
42 * parameter, or 0 if parameter can not be expressed as a MIDI event
44 virtual uint8_t parameter_midi_type(const Parameter& param) const = 0;
46 /** The type ID for a MIDI event with the given status byte
48 virtual uint32_t midi_event_type(uint8_t status) const = 0;
50 /** Return true iff parameter should be locked to integer boundaries */
51 virtual bool is_integer(const Evoral::Parameter& param) const = 0;
53 /** Create a parameter with the given type ID */
54 virtual Parameter new_parameter(uint32_t type, uint8_t channel, uint32_t id) const = 0;
56 virtual std::string to_symbol(const Parameter& param) const = 0;
61 #endif // EVORAL_TYPE_MAP_HPP