2 Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/time_pair.h
21 * @brief TimePair class.
24 #ifndef LIBSUB_TIME_PAIR_H
25 #define LIBSUB_TIME_PAIR_H
27 #include "frame_time.h"
28 #include "metric_time.h"
29 #include <boost/optional.hpp>
34 * @brief A time, expressed either in metric (h:m:s:ms) or frames (h:m:s:f).
41 TimePair (FrameTime t)
45 TimePair (MetricTime t)
49 void set_frame (FrameTime t) {
51 _metric = boost::optional<MetricTime> ();
54 void set_metric (MetricTime t) {
56 _frame = boost::optional<FrameTime> ();
59 boost::optional<FrameTime> frame () const {
63 boost::optional<MetricTime> metric () const {
67 FrameTime frame (float fps) const;
68 MetricTime metric (float fps) const;
70 void add (FrameTime t, float fps);
71 void scale (float f, float fps);
73 bool operator== (TimePair const & other) const;
76 boost::optional<FrameTime> _frame;
77 boost::optional<MetricTime> _metric;
80 std::ostream& operator<< (std::ostream & s, TimePair const &);