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/*
Copyright (C) 2012-2015 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/dcp_time.h
* @brief Time class.
*/
#ifndef LIBDCP_TIME_H
#define LIBDCP_TIME_H
#include <stdint.h>
#include <string>
#include <iostream>
namespace dcp {
/** @class Time
* @brief A representation of time within a DCP.
*/
class Time
{
public:
/** Construct a zero Time */
Time () : h (0), m (0), s (0), e (0), tcr (1) {}
/** Construct a Time.
* @param Frame index (starting from 0).
* @param frames_per_second Frames per second.
* @param tcr Timecode rate.
*/
Time (int frame, int frames_per_second, int tcr);
/** Construct a Time from hours, minutes, seconds, editable units and a timecode rate.
* @param h_ Hours.
* @param m_ Minutes.
* @param s_ Seconds.
* @param e_ Editable units (where 1 editable unit is 1 / tcr_ seconds)
* @param tcr_ Timecode rate; i.e. number of editable units per second.
*/
Time (int h_, int m_, int s_, int e_, int tcr_)
: h (h_)
, m (m_)
, s (s_)
, e (e_)
, tcr (tcr_)
{}
Time (double seconds);
Time (std::string time, int tcr);
int h; ///< hours
int m; ///< minutes
int s; ///< seconds
int e; ///< editable units (where 1 editable unit is 1 / tcr_ seconds)
int tcr; ///< timecode rate: the number of editable units per second.
std::string as_string () const;
double as_seconds () const;
int64_t as_editable_units (int tcr_) const;
Time rebase (int tcr_) const;
private:
void set (double seconds, int tcr);
};
extern bool operator== (Time const & a, Time const & b);
extern bool operator!= (Time const & a, Time const & b);
extern bool operator<= (Time const & a, Time const & b);
extern bool operator< (Time const & a, Time const & b);
extern bool operator> (Time const & a, Time const & b);
extern bool operator>= (Time const & a, Time const & b);
extern std::ostream & operator<< (std::ostream & s, Time const & t);
extern Time operator+ (Time a, Time b);
extern Time operator- (Time a, Time b);
extern float operator/ (Time a, Time const & b);
}
#endif
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