/*
- Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+ 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
#ifndef LIBDCP_TIME_H
#define LIBDCP_TIME_H
+#include "types.h"
#include <stdint.h>
#include <string>
#include <iostream>
/** @class Time
* @brief A representation of time within a DCP.
*/
-
class Time
{
public:
- Time () : h (0), m (0), s (0), t (0) {}
+ /** Construct a zero Time */
+ Time () : h (0), m (0), s (0), e (0), tcr (1) {}
- Time (int64_t ticks);
-
- /** Construct a Time from a frame index (starting from 0)
- * and a frames per second count.
+ /** 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);
+ Time (int frame, double frames_per_second, int tcr);
- /** Construct a Time from hours, minutes, seconds and ticks.
+ /** Construct a Time from hours, minutes, seconds, editable units and a timecode rate.
* @param h_ Hours.
* @param m_ Minutes.
* @param s_ Seconds.
- * @param t_ Ticks (where 1 tick is 4 milliseconds).
+ * @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 t_)
+ Time (int h_, int m_, int s_, int e_, int tcr_)
: h (h_)
, m (m_)
, s (s_)
- , t (t_)
+ , e (e_)
+ , tcr (tcr_)
{}
- Time (std::string time);
+ Time (double seconds, int tcr);
+
+ Time (std::string time, int tcr);
- int h; ///< hours
- int m; ///< minutes
- int s; ///< seconds
- int t; ///< `ticks', where 1 tick is 4 milliseconds
+ 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 to_string () const;
- int64_t to_ticks () const;
- double to_seconds () const;
+ std::string as_string (Standard standard) const;
+ double as_seconds () const;
+ int64_t as_editable_units (int tcr_) const;
+ Time rebase (int tcr_) const;
private:
- void set (double);
+ 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 std::ostream & operator<< (std::ostream & s, Time const & t);
-extern Time operator+ (Time a, Time const & b);
-extern Time operator- (Time a, Time const & b);
+extern Time operator+ (Time a, Time b);
+extern Time operator- (Time a, Time b);
extern float operator/ (Time a, Time const & b);
}