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/*
Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file src/time_pair.h
* @brief TimePair class.
*/
#ifndef LIBSUB_TIME_PAIR_H
#define LIBSUB_TIME_PAIR_H
#include "frame_time.h"
#include "metric_time.h"
#include <boost/optional.hpp>
namespace sub {
/** @class TimePair
* @brief A time, expressed either in metric (h:m:s:ms) or frames (h:m:s:f).
*/
class TimePair
{
public:
TimePair () {}
TimePair (FrameTime t)
: _frame (t)
{}
TimePair (MetricTime t)
: _metric (t)
{}
void set_frame (FrameTime t) {
_frame = t;
_metric = boost::optional<MetricTime> ();
}
void set_metric (MetricTime t) {
_metric = t;
_frame = boost::optional<FrameTime> ();
}
boost::optional<FrameTime> frame () const {
return _frame;
}
boost::optional<MetricTime> metric () const {
return _metric;
}
FrameTime frame (float fps) const;
MetricTime metric (float fps) const;
void add (FrameTime t, float fps);
void scale (float f, float fps);
bool operator== (TimePair const & other) const;
private:
boost::optional<FrameTime> _frame;
boost::optional<MetricTime> _metric;
};
std::ostream& operator<< (std::ostream & s, TimePair const &);
}
#endif
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