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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.
*/
#include "../exceptions.h"
#include "../raw_convert.h"
#include "subtitle.h"
#include <libcxml/cxml.h>
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string.hpp>
using std::string;
using std::vector;
using std::list;
using boost::optional;
using boost::shared_ptr;
using boost::lexical_cast;
using boost::is_any_of;
using namespace sub;
dcp::Subtitle::Subtitle (boost::shared_ptr<const cxml::Node> node, optional<int> tcr)
{
if (tcr) {
in = smpte_time (node, "TimeIn", tcr.get ()).get ();
out = smpte_time (node, "TimeOut", tcr.get ()).get ();
} else {
in = interop_time (node, "TimeIn").get ();
out = interop_time (node, "TimeOut").get ();
}
if (tcr) {
fade_up_time = smpte_time (node, "FadeUpTime", tcr.get ()).get_value_or (Time::from_hmsf (0, 0, 0, 2, Rational (tcr.get(), 1)));
fade_down_time = smpte_time (node, "FadeDownTime", tcr.get ()).get_value_or (Time::from_hmsf (0, 0, 0, 2, Rational (tcr.get (), 1)));
} else {
fade_up_time = interop_time (node, "FadeUpTime").get_value_or (Time::from_hms (0, 0, 0, 80));
if (fade_up_time > Time::from_hms (0, 0, 8, 0)) {
fade_up_time = Time::from_hms (0, 0, 8, 0);
}
fade_down_time = interop_time (node, "FadeDownTime").get_value_or (Time::from_hms (0, 0, 0, 80));
if (fade_down_time > Time::from_hms (0, 0, 8, 0)) {
fade_down_time = Time::from_hms (0, 0, 8, 0);
}
}
}
optional<Time>
dcp::Subtitle::smpte_time (shared_ptr<const cxml::Node> node, string name, int tcr)
{
optional<string> u = node->optional_string_attribute (name);
if (!u) {
return optional<Time> ();
}
vector<string> b;
split (b, u.get (), is_any_of (":"));
if (b.size() != 4) {
boost::throw_exception (DCPError ("unrecognised time specification " + u.get ()));
}
return Time::from_hmsf (
raw_convert<int> (b[0]),
raw_convert<int> (b[1]),
raw_convert<int> (b[2]),
raw_convert<int> (b[3]),
Rational (tcr, 1)
);
}
optional<Time>
dcp::Subtitle::interop_time (shared_ptr<const cxml::Node> node, string name)
{
optional<string> u = node->optional_string_attribute (name);
if (!u) {
return optional<Time> ();
}
if (u.get().find (":") != string::npos) {
/* HH:MM:SS:TTT or HH:MM:SS.sss */
vector<string> b;
split (b, u.get(), is_any_of (":."));
if (b.size() != 4) {
boost::throw_exception (DCPError ("unrecognised time specification " + u.get ()));
}
if (u.get().find (".") != string::npos) {
return Time::from_hms (
raw_convert<int> (b[0]),
raw_convert<int> (b[1]),
raw_convert<int> (b[2]),
rint (raw_convert<double> ("." + b[3]) * 1000)
);
} else {
return Time::from_hms (
raw_convert<int> (b[0]),
raw_convert<int> (b[1]),
raw_convert<int> (b[2]),
raw_convert<int> (b[3]) * 4
);
}
} else {
return Time::from_hms (0, 0, 0, raw_convert<int> (u.get ()) * 4);
}
}
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