X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fdcp_time.h;h=1221fb328a33168f2aa73a22e2201f960e30e441;hb=9e523d8a4062ad52330dff6c2ba50e54184c9bb2;hp=626cdacae1ddb3b4f0ef18249998e6a3436a1643;hpb=119c79e39b1da062334034940bdc0a98960bae0b;p=libdcp.git

diff --git a/src/dcp_time.h b/src/dcp_time.h
index 626cdaca..1221fb32 100644
--- a/src/dcp_time.h
+++ b/src/dcp_time.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012 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
@@ -18,44 +18,78 @@
 */
 
 /** @file  src/dcp_time.h
- *  @brief A representation of time within a DCP.
+ *  @brief Time class.
  */
 
 #ifndef LIBDCP_TIME_H
 #define LIBDCP_TIME_H
 
-namespace libdcp {
+#include <stdint.h>
+#include <string>
+#include <iostream>
+
+namespace dcp {
 
 /** @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) {}
+
+	/** 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 a frame index (starting from 0)
-	 *  and a frames per second count.
+	/** 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 frame, int frames_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_)
 	{}
 
-	int h; ///< hours
-	int m; ///< minutes
-	int s; ///< seconds
-	int t; ///< `ticks', where 1 tick is 4 milliseconds
+	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);
 
 }