2 Copyright (C) 2009 Paul Davis
3 Author: David Robillard
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 $Id: midiregion.h 733 2006-08-01 17:19:38Z drobilla $
22 #include "evoral/TimeConverter.hpp"
23 #include "ardour/types.h"
25 #ifndef __ardour_beats_frames_converter_h__
26 #define __ardour_beats_frames_converter_h__
32 /** Converter between beats and frames. Takes durations in beats or frames
33 * and converts them using the tempo at the \a origin supplied to the constructor.
34 * Note that this does not covert positions, only durations.
36 class BeatsFramesConverter : public Evoral::TimeConverter<double,framepos_t> {
38 BeatsFramesConverter (const TempoMap& tempo_map, framepos_t origin)
39 : Evoral::TimeConverter<double, framepos_t> (origin)
40 , _tempo_map(tempo_map)
43 framepos_t to (double beats) const;
44 double from (framepos_t frames) const;
47 const TempoMap& _tempo_map;
50 } /* namespace ARDOUR */
52 #endif /* __ardour_beats_frames_converter_h__ */