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/>.
22 #include "active_text.h"
23 #include "text_content.h"
30 using std::shared_ptr;
31 using boost::optional;
32 using namespace dcpomatic;
35 /** Get the open captions that should be burnt into a given period.
36 * @param period Period of interest.
37 * @param always_burn_captions Always burn captions even if their content is not set to burn.
40 ActiveText::get_burnt (DCPTimePeriod period, bool always_burn_captions) const
42 boost::mutex::scoped_lock lm (_mutex);
46 for (auto const& i: _data) {
48 auto caption = i.first.lock ();
53 if (!caption->use() || (!always_burn_captions && !caption->burn())) {
54 /* Not burning this content */
58 for (auto j: i.second) {
59 DCPTimePeriod test (j.from, j.to.get_value_or(DCPTime::max()));
60 auto overlap = period.overlap (test);
61 if (overlap && overlap->duration() > DCPTime(period.duration().get() / 2)) {
62 ps.push_back (j.subs);
71 /** Remove subtitles that finish before a given time from our list.
72 * @param time Time to remove before.
75 ActiveText::clear_before (DCPTime time)
77 boost::mutex::scoped_lock lm (_mutex);
80 for (auto const& i: _data) {
82 for (auto j: i.second) {
83 if (!j.to || j.to.get() >= time) {
88 updated[i.first] = as;
95 /** Add a new subtitle with a from time.
96 * @param content Content that the subtitle is from.
97 * @param ps Subtitles.
98 * @param from From time for these subtitles.
101 ActiveText::add_from (weak_ptr<const TextContent> content, PlayerText ps, DCPTime from)
103 boost::mutex::scoped_lock lm (_mutex);
105 if (_data.find(content) == _data.end()) {
106 _data[content] = list<Period>();
108 _data[content].push_back (Period (ps, from));
112 /** Add the to time for the last subtitle added from a piece of content.
113 * @param content Content that the subtitle is from.
114 * @param to To time for the last subtitle submitted to add_from for this content.
115 * @return Return the corresponding subtitles and their from time.
117 pair<PlayerText, DCPTime>
118 ActiveText::add_to (weak_ptr<const TextContent> content, DCPTime to)
120 boost::mutex::scoped_lock lm (_mutex);
122 DCPOMATIC_ASSERT (_data.find(content) != _data.end());
124 _data[content].back().to = to;
126 for (auto& i: _data[content].back().subs.string) {
127 i.set_out (dcp::Time(to.seconds(), 1000));
130 return make_pair (_data[content].back().subs, _data[content].back().from);
134 /** @param content Some content.
135 * @return true if we have any active subtitles from this content.
138 ActiveText::have (weak_ptr<const TextContent> content) const
140 boost::mutex::scoped_lock lm (_mutex);
142 auto i = _data.find(content);
143 if (i == _data.end()) {
147 return !i->second.empty();
154 boost::mutex::scoped_lock lm (_mutex);