2 Copyright (C) 2009 Paul Davis
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 "ardour/beats_frames_converter.h"
23 #include "ardour/tempo.h"
28 BeatsFramesConverter::to(double beats
) const
30 // FIXME: assumes tempo never changes after origin
31 const Tempo
& tempo
= _tempo_map
.tempo_at(_origin
);
32 const double frames_per_beat
= tempo
.frames_per_beat(
33 _tempo_map
.frame_rate(),
34 _tempo_map
.meter_at(_origin
));
36 return lrint(beats
* frames_per_beat
);
40 BeatsFramesConverter::from(sframes_t frames
) const
42 // FIXME: assumes tempo never changes after origin
43 const Tempo
& tempo
= _tempo_map
.tempo_at(_origin
);
44 const double frames_per_beat
= tempo
.frames_per_beat(
45 _tempo_map
.frame_rate(),
46 _tempo_map
.meter_at(_origin
));
48 return frames
/ frames_per_beat
;
51 } /* namespace ARDOUR */