/*
- Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of libdcp.
files in the program, then also delete it here.
*/
+
/** @file src/dcp_time.cc
- * @brief Time class.
+ * @brief Time class
*/
+
#include "raw_convert.h"
#include "dcp_time.h"
#include "exceptions.h"
#include "compose.hpp"
+#include "dcp_assert.h"
#include <boost/algorithm/string.hpp>
#include <boost/optional.hpp>
#include <iostream>
#include <vector>
#include <cmath>
+
using namespace std;
using namespace boost;
using namespace dcp;
+
Time::Time (int frame, double frames_per_second, int tcr_)
{
set (double (frame) / frames_per_second, tcr_);
}
-/** Construct a Time from a number of seconds and a timecode rate.
- *
- * @param seconds A number of seconds.
- * @param tcr_ Timecode rate.
- */
+
Time::Time (double seconds, int tcr_)
{
set (seconds, tcr_);
}
+
/** Construct a Time with specified timecode rate and using the supplied
* number of seconds.
*
}
}
-/** @param time String of the form
- * HH:MM:SS:EE for SMPTE
- * HH:MM:SS:E[E[E]] or HH:MM:SS.s[s[s]] for Interop
- * where HH are hours, MM minutes, SS seconds, EE editable units and
- * sss millseconds.
- *
- * @param tcr_ Timecode rate if this is a SMPTE time, otherwise empty for an Interop time.
- */
+
Time::Time (string time, optional<int> tcr_)
{
vector<string> b;
split (b, time, is_any_of (":"));
if (b.size() < 3 || b[0].empty() || b[1].empty() || b[0].length() > 2 || b[1].length() > 2) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1", time)));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1", time)));
}
if (!tcr_) {
vector<string> bs;
split (bs, b[2], is_any_of ("."));
if (bs.size() != 2) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1", time)));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1", time)));
}
h = raw_convert<int> (b[0]);
m = raw_convert<int> (b[1]);
if (bs[0].empty() || bs[0].length() > 2) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, bs[0])));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, bs[0])));
}
s = raw_convert<int> (bs[0]);
if (bs[1].empty() || bs[1].length() > 3) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, bs[1])));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, bs[1])));
}
e = raw_convert<int> (bs[1]);
tcr = 1000;
h = raw_convert<int> (b[0]);
m = raw_convert<int> (b[1]);
if (b[2].empty() || b[2].length() > 2) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[2])));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[2])));
}
s = raw_convert<int> (b[2]);
if (b[3].empty() || b[3].length() > 3) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[3])));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[3])));
}
e = raw_convert<int> (b[3]);
tcr = 250;
} else {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1", time)));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1", time)));
}
} else {
/* SMPTE: HH:MM:SS:EE */
split (b, time, is_any_of (":"));
if (b.size() != 4) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1; does not have 4 parts", time)));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; does not have 4 parts", time)));
}
h = raw_convert<int> (b[0]);
m = raw_convert<int> (b[1]);
if (b[2].empty() || b[2].length() > 2) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[2])));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[2])));
}
s = raw_convert<int> (b[2]);
if (b[3].empty() || b[3].length() > 2) {
- boost::throw_exception (DCPReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[3])));
+ boost::throw_exception (ReadError (String::compose ("unrecognised time specification %1; %2 has bad length", time, b[3])));
}
e = raw_convert<int> (b[3]);
tcr = tcr_.get();
}
}
+
bool
dcp::operator== (Time const & a, Time const & b)
{
return (a.h == b.h && a.m == b.m && a.s == b.s && (a.e * b.tcr) == (b.e * a.tcr));
}
+
bool
dcp::operator!= (Time const & a, Time const & b)
{
return !(a == b);
}
+
bool
dcp::operator<= (Time const & a, Time const & b)
{
return a < b || a == b;
}
+
bool
dcp::operator>= (Time const & a, Time const & b)
{
return a > b || a == b;
}
+
bool
dcp::operator< (Time const & a, Time const & b)
{
return a.s < b.s;
}
- if ((a.e * b.tcr) != (b.e * a.tcr)) {
- return (a.e * b.tcr) < (b.e * a.tcr);
- }
-
- return true;
+ return (a.e * b.tcr) < (b.e * a.tcr);
}
+
bool
dcp::operator> (Time const & a, Time const & b)
{
return a.s > b.s;
}
- if ((a.e * b.tcr) != (b.e * a.tcr)) {
- return (a.e * b.tcr) > (b.e * a.tcr);
- }
-
- return true;
+ return (a.e * b.tcr) > (b.e * a.tcr);
}
+
ostream &
dcp::operator<< (ostream& s, Time const & t)
{
return s;
}
+
dcp::Time
dcp::operator+ (Time a, Time b)
{
return r;
}
+
dcp::Time
dcp::operator- (Time a, Time b)
{
return r;
}
+
float
dcp::operator/ (Time a, Time const & b)
{
return float (at) / bt;
}
-/** @return A string of the form h:m:s:e padded as in 00:00:00:000 (for Interop) or 00:00:00:00 (for SMPTE) */
+
string
Time::as_string (Standard standard) const
{
char buffer[64];
- if (standard == SMPTE) {
+ if (standard == Standard::SMPTE) {
snprintf (buffer, sizeof(buffer), "%02d:%02d:%02d:%02d", h, m, s, e);
} else {
snprintf (buffer, sizeof(buffer), "%02d:%02d:%02d:%03d", h, m, s, e);
return buffer;
}
-/** @param tcr_ Timecode rate with which the return value should be counted.
- * @return the total number of editable units that this time consists of at the specified timecode rate, rounded up
- * to the nearest editable unit. For example, as_editable_units (24) returns the total time in frames at 24fps.
- */
+
int64_t
Time::as_editable_units (int tcr_) const
{
- return ceil (int64_t(e) * double (tcr_) / tcr) + int64_t(s) * tcr_ + int64_t(m) * 60 * tcr_ + int64_t(h) * 60 * 60 * tcr_;
+ return ceil(int64_t(e) * double(tcr_) / tcr) + int64_t(s) * tcr_ + int64_t(m) * 60 * tcr_ + int64_t(h) * 60 * 60 * tcr_;
}
-/** @return the total number of seconds that this time consists of */
+
double
Time::as_seconds () const
{
return h * 3600 + m * 60 + s + double(e) / tcr;
}
-/** @param tcr_ New timecode rate.
- * @return A new Time which is this time at the spcified new timecode rate.
- */
+
Time
Time::rebase (int tcr_) const
{
- return Time (h, m, s, floor (float (e) * tcr_ / tcr), tcr_);
+ long int e_ = lrintf (float (e) * tcr_ / tcr);
+ int s_ = s;
+ if (e_ >= tcr_) {
+ e_ -= tcr_;
+ ++s_;
+ }
+ int m_ = m;
+ if (s_ >= 60) {
+ s_ -= 60;
+ ++m_;
+ }
+ int h_ = h;
+ if (m_ >= 60) {
+ m_ -= 60;
+ ++h_;
+ }
+
+ return Time (h_, m_, s_, e_, tcr_);
}
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