2 Copyright (C) 2017-2018 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "active_text.h"
22 #include "text_content.h"
23 #include <boost/shared_ptr.hpp>
24 #include <boost/weak_ptr.hpp>
29 using boost::weak_ptr;
30 using boost::shared_ptr;
31 using boost::optional;
34 ActiveText::add (DCPTimePeriod period, list<PlayerText>& pc, list<Period> p) const
36 BOOST_FOREACH (Period i, p) {
37 DCPTimePeriod test (i.from, i.to.get_value_or(DCPTime::max()));
38 optional<DCPTimePeriod> overlap = period.overlap (test);
39 if (overlap && overlap->duration() > DCPTime(period.duration().get() / 2)) {
40 pc.push_back (i.subs);
46 ActiveText::get (DCPTimePeriod period) const
48 boost::mutex::scoped_lock lm (_mutex);
52 for (Map::const_iterator i = _data.begin(); i != _data.end(); ++i) {
54 shared_ptr<const TextContent> caption = i->first.lock ();
55 if (!caption || !caption->use()) {
59 add (period, ps, i->second);
65 /** Get the open captions that should be burnt into a given period.
66 * @param period Period of interest.
67 * @param always_burn_captions Always burn captions even if their content is not set to burn.
70 ActiveText::get_burnt (DCPTimePeriod period, bool always_burn_captions) const
72 boost::mutex::scoped_lock lm (_mutex);
76 for (Map::const_iterator i = _data.begin(); i != _data.end(); ++i) {
78 shared_ptr<const TextContent> caption = i->first.lock ();
83 if (!caption->use() || (!always_burn_captions && !caption->burn())) {
84 /* Not burning this content */
88 add (period, ps, i->second);
94 /** Remove subtitles that finish before a given time from our list.
95 * @param time Time to remove before.
98 ActiveText::clear_before (DCPTime time)
100 boost::mutex::scoped_lock lm (_mutex);
103 for (Map::const_iterator i = _data.begin(); i != _data.end(); ++i) {
105 BOOST_FOREACH (Period j, i->second) {
106 if (!j.to || j.to.get() >= time) {
111 updated[i->first] = as;
117 /** Add a new subtitle with a from time.
118 * @param content Content that the subtitle is from.
119 * @param ps Subtitles.
120 * @param from From time for these subtitles.
123 ActiveText::add_from (weak_ptr<const TextContent> content, PlayerText ps, DCPTime from)
125 boost::mutex::scoped_lock lm (_mutex);
127 if (_data.find(content) == _data.end()) {
128 _data[content] = list<Period>();
130 _data[content].push_back (Period (ps, from));
133 /** Add the to time for the last subtitle added from a piece of content.
134 * @param content Content that the subtitle is from.
135 * @param to To time for the last subtitle submitted to add_from for this content.
136 * @return Return the corresponding subtitles and their from time.
138 pair<PlayerText, DCPTime>
139 ActiveText::add_to (weak_ptr<const TextContent> content, DCPTime to)
141 boost::mutex::scoped_lock lm (_mutex);
143 DCPOMATIC_ASSERT (_data.find(content) != _data.end());
145 _data[content].back().to = to;
147 BOOST_FOREACH (StringText& i, _data[content].back().subs.string) {
148 i.set_out (dcp::Time(to.seconds(), 1000));
151 return make_pair (_data[content].back().subs, _data[content].back().from);
154 /** @param content Some content.
155 * @return true if we have any active subtitles from this content.
158 ActiveText::have (weak_ptr<const TextContent> content) const
160 boost::mutex::scoped_lock lm (_mutex);
162 Map::const_iterator i = _data.find(content);
163 if (i == _data.end()) {
167 return !i->second.empty();
173 boost::mutex::scoped_lock lm (_mutex);