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/*
* Copyright (C) 2017 Paul Davis <paul@linuxaudiosystems.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "temporal/beats.h"
#include "evoral/TimeConverter.h"
#include "ardour/libardour_visibility.h"
#include "ardour/types.h"
#ifndef __ardour_beats_samples_converter_h__
#define __ardour_beats_samples_converter_h__
namespace ARDOUR {
class TempoMap;
/** Converter between quarter-note beats and samples. Takes distances in quarter-note beats or samples
* from some origin (supplied to the constructor in samples), and converts
* them to the opposite unit, taking tempo changes into account.
*/
class LIBARDOUR_API BeatsSamplesConverter
: public Evoral::TimeConverter<Temporal::Beats,samplepos_t> {
public:
BeatsSamplesConverter (const TempoMap& tempo_map, samplepos_t origin)
: Evoral::TimeConverter<Temporal::Beats, samplepos_t> (origin)
, _tempo_map(tempo_map)
{}
samplepos_t to (Temporal::Beats beats) const;
Temporal::Beats from (samplepos_t samples) const;
private:
const TempoMap& _tempo_map;
};
/** Converter between quarter-note beats and samples. Takes distances in quarter-note beats or samples
* from some origin (supplied to the constructor in samples), and converts
* them to the opposite unit, taking tempo changes into account.
*/
class LIBARDOUR_API DoubleBeatsSamplesConverter
: public Evoral::TimeConverter<double,samplepos_t> {
public:
DoubleBeatsSamplesConverter (const TempoMap& tempo_map, samplepos_t origin)
: Evoral::TimeConverter<double, samplepos_t> (origin)
, _tempo_map(tempo_map)
{}
samplepos_t to (double beats) const;
double from (samplepos_t samples) const;
private:
const TempoMap& _tempo_map;
};
} /* namespace ARDOUR */
#endif /* __ardour_beats_samples_converter_h__ */
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