/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2014 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
*/
+/** @file src/dcp_time.cc
+ * @brief Time class.
+ */
+
+#include "dcp_time.h"
+#include "exceptions.h"
+#include <boost/algorithm/string.hpp>
+#include <boost/lexical_cast.hpp>
#include <iostream>
+#include <vector>
#include <cmath>
-#include "dcp_time.h"
using namespace std;
-using namespace libdcp;
+using namespace boost;
+using namespace dcp;
Time::Time (int frame, int frames_per_second)
+ : h (0)
+ , m (0)
+ , s (0)
+ , t (0)
{
- float sec_float = float (frame) / frames_per_second;
- ms = int (sec_float * 1000) % 1000;
- s = floor (sec_float);
+ set (double (frame) / frames_per_second);
+}
+
+Time::Time (int64_t ticks)
+{
+ h = ticks / (60 * 60 * 250);
+ ticks -= int64_t (h) * 60 * 60 * 250;
+ m = ticks / (60 * 250);
+ ticks -= int64_t (m) * 60 * 250;
+ s = ticks / 250;
+ ticks -= int64_t (s) * 250;
+ t = ticks;
+}
+
+void
+Time::set (double ss)
+{
+ t = (int (round (ss * 1000)) % 1000) / 4;
+ s = floor (ss);
if (s > 60) {
m = s / 60;
}
}
+Time::Time (string time)
+{
+ vector<string> b;
+ split (b, time, is_any_of (":"));
+ if (b.size() != 4) {
+ boost::throw_exception (DCPReadError ("unrecognised time specification"));
+ }
+
+ h = lexical_cast<int> (b[0]);
+ m = lexical_cast<int> (b[1]);
+ s = lexical_cast<int> (b[2]);
+ t = lexical_cast<int> (b[3]);
+}
+
+bool
+dcp::operator== (Time const & a, Time const & b)
+{
+ return (a.h == b.h && a.m == b.m && a.s == b.s && a.t == b.t);
+}
+
bool
-libdcp::operator== (Time const & a, Time const & b)
+dcp::operator!= (Time const & a, Time const & b)
{
- return (a.h == b.h && a.m == b.m && a.s == b.s && a.ms == b.ms);
+ return !(a == b);
}
bool
-libdcp::operator<= (Time const & a, Time const & b)
+dcp::operator<= (Time const & a, Time const & b)
{
if (a.h != b.h) {
return a.h <= b.h;
return a.s <= b.s;
}
- if (a.ms != b.ms) {
- return a.ms <= b.ms;
+ if (a.t != b.t) {
+ return a.t <= b.t;
+ }
+
+ return true;
+}
+
+bool
+dcp::operator< (Time const & a, Time const & b)
+{
+ if (a.h != b.h) {
+ return a.h < b.h;
+ }
+
+ if (a.m != b.m) {
+ return a.m < b.m;
+ }
+
+ if (a.s != b.s) {
+ return a.s < b.s;
+ }
+
+ if (a.t != b.t) {
+ return a.t < b.t;
+ }
+
+ return true;
+}
+
+bool
+dcp::operator> (Time const & a, Time const & b)
+{
+ if (a.h != b.h) {
+ return a.h > b.h;
+ }
+
+ if (a.m != b.m) {
+ return a.m > b.m;
+ }
+
+ if (a.s != b.s) {
+ return a.s > b.s;
+ }
+
+ if (a.t != b.t) {
+ return a.t > b.t;
}
return true;
}
ostream &
-libdcp::operator<< (ostream& s, Time const & t)
+dcp::operator<< (ostream& s, Time const & t)
{
- s << t.h << ":" << t.m << ":" << t.s << "." << t.ms;
+ s << t.h << ":" << t.m << ":" << t.s << "." << t.t;
return s;
}
+
+dcp::Time
+dcp::operator+ (Time a, Time const & b)
+{
+ Time r;
+
+ r.t = a.t + b.t;
+ if (r.t >= 250) {
+ r.t -= 250;
+ r.s++;
+ }
+
+ r.s += a.s + b.s;
+ if (r.s >= 60) {
+ r.s -= 60;
+ r.m++;
+ }
+
+ r.m += a.m + b.m;
+ if (r.m >= 60) {
+ r.m -= 60;
+ r.h++;
+ }
+
+ r.h += a.h + b.h;
+
+ return r;
+}
+
+dcp::Time
+dcp::operator- (Time a, Time const & b)
+{
+ Time r;
+
+ r.t = a.t - b.t;
+ if (r.t < 0) {
+ r.t += 250;
+ r.s--;
+ }
+
+ r.s += (a.s - b.s);
+ if (r.s < 0) {
+ r.s += 60;
+ r.m--;
+ }
+
+ r.m += (a.m - b.m);
+ if (r.m < 0) {
+ r.m += 60;
+ r.h--;
+ }
+
+ r.h += (a.h - b.h);
+
+ return r;
+}
+
+float
+dcp::operator/ (Time a, Time const & b)
+{
+ int64_t const at = a.h * 3600 * 250 + a.m * 60 * 250 + a.s * 250 + a.t;
+ int64_t const bt = b.h * 3600 * 250 + b.m * 60 * 250 + b.s * 250 + b.t;
+ return float (at) / bt;
+}
+
+/** @return A string of the form h:m:s:t */
+string
+Time::to_string () const
+{
+ stringstream str;
+ str << h << ":" << m << ":" << s << ":" << t;
+ return str.str ();
+}
+
+/** @return This time in ticks */
+int64_t
+Time::to_ticks () const
+{
+ return int64_t(t) + int64_t(s) * 250 + int64_t(m) * 60 * 250 + int64_t(h) * 60 * 60 * 250;
+}
+