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
26 #include "evoral/visibility.h"
31 class ParameterDescriptor;
33 /** The applications passes one of these which provide the implementation
34 * with required information about event types in an opaque, type neutral way
36 class /*LIBEVORAL_API*/ TypeMap {
40 /** Return true iff the type is a MIDI event.
41 * The contents of the event will be used for specific ID
43 virtual bool type_is_midi(uint32_t type) const = 0;
45 /** Return the MIDI type (ie status byte with channel 0) for a
46 * parameter, or 0 if parameter can not be expressed as a MIDI event
48 virtual uint8_t parameter_midi_type(const Parameter& param) const = 0;
50 /** The type ID for a MIDI event with the given status byte
52 virtual uint32_t midi_event_type(uint8_t status) const = 0;
54 /** Return the description of a parameter. */
55 virtual ParameterDescriptor descriptor(const Parameter& param) const = 0;
57 virtual std::string to_symbol(const Parameter& param) const = 0;
62 #endif // EVORAL_TYPE_MAP_HPP