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/libardour_visibility.h"
24 #include "ardour/types.h"
26 #ifndef __ardour_beats_frames_converter_h__
27 #define __ardour_beats_frames_converter_h__
33 /** Converter between beats and frames. Takes distances in beats or frames
34 * from some origin (supplied to the constructor in frames), and converts
35 * them to the opposite unit, taking tempo changes into account.
37 class LIBARDOUR_API BeatsFramesConverter : public Evoral::TimeConverter<double,framepos_t> {
39 BeatsFramesConverter (TempoMap& tempo_map, framepos_t origin)
40 : Evoral::TimeConverter<double, framepos_t> (origin)
41 , _tempo_map(tempo_map)
44 framepos_t to (double beats) const;
45 double from (framepos_t frames) const;
51 } /* namespace ARDOUR */
53 #endif /* __ardour_beats_frames_converter_h__ */