2 Copyright (C) 2019-2021 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 "compose.hpp"
25 #include "subtitle_encoder.h"
26 #include <dcp/interop_subtitle_asset.h>
27 #include <dcp/raw_convert.h>
28 #include <dcp/smpte_subtitle_asset.h>
29 #include <boost/filesystem.hpp>
30 #include <boost/bind/bind.hpp>
36 using std::make_shared;
38 using std::shared_ptr;
41 using boost::optional;
42 #if BOOST_VERSION >= 106100
43 using namespace boost::placeholders;
45 using dcp::raw_convert;
48 /** @param output Directory, if there will be multiple output files, or a filename.
49 * @param initial_name Hint that may be used to create filenames, if @ref output is a directory.
50 * @param include_font true to refer to and export any font file (for Interop; ignored for SMPTE).
52 SubtitleEncoder::SubtitleEncoder (shared_ptr<const Film> film, shared_ptr<Job> job, boost::filesystem::path output, string initial_name, bool split_reels, bool include_font)
54 , _split_reels (split_reels)
55 , _include_font (include_font)
57 , _length (film->length())
59 _player.set_play_referenced();
60 _player.set_ignore_video();
61 _player.set_ignore_audio();
62 _player.Text.connect(boost::bind(&SubtitleEncoder::text, this, _1, _2, _3, _4));
64 string const extension = film->interop() ? ".xml" : ".mxf";
66 int const files = split_reels ? film->reels().size() : 1;
67 for (int i = 0; i < files; ++i) {
69 boost::filesystem::path filename = output;
70 if (boost::filesystem::is_directory(filename)) {
72 /// TRANSLATORS: _reel%1 here is to be added to an export filename to indicate
73 /// which reel it is. Preserve the %1; it will be replaced with the reel number.
74 filename /= String::compose("%1_reel%2", initial_name, i + 1);
76 filename /= initial_name;
80 _assets.push_back (make_pair(shared_ptr<dcp::SubtitleAsset>(), boost::filesystem::change_extension(filename, extension)));
83 for (auto i: film->reels()) {
87 _default_font = dcp::ArrayData (default_font_file());
92 SubtitleEncoder::go ()
95 shared_ptr<Job> job = _job.lock ();
96 DCPOMATIC_ASSERT (job);
97 job->sub (_("Extracting"));
102 while (!_player.pass()) {}
105 for (auto& i: _assets) {
107 /* No subtitles arrived for this asset; make an empty one so we write something to the output */
108 if (_film->interop()) {
109 auto s = make_shared<dcp::InteropSubtitleAsset>();
110 s->set_movie_title (_film->name());
111 s->set_reel_number (raw_convert<string>(reel + 1));
114 auto s = make_shared<dcp::SMPTESubtitleAsset>();
115 s->set_content_title_text (_film->name());
116 s->set_reel_number (reel + 1);
121 if (!_film->interop() || _include_font) {
122 for (auto j: _player.get_subtitle_fonts()) {
123 i.first->add_font(j->id(), j->data().get_value_or(_default_font));
127 i.first->write (i.second);
134 SubtitleEncoder::text (PlayerText subs, TextType type, optional<DCPTextTrack> track, dcpomatic::DCPTimePeriod period)
136 if (type != TextType::OPEN_SUBTITLE) {
140 if (!_assets[_reel_index].first) {
141 shared_ptr<dcp::SubtitleAsset> asset;
142 auto lang = _film->subtitle_languages ();
143 if (_film->interop ()) {
144 auto s = make_shared<dcp::InteropSubtitleAsset>();
145 s->set_movie_title (_film->name());
147 s->set_language (lang.first->to_string());
149 s->set_reel_number (raw_convert<string>(_reel_index + 1));
150 _assets[_reel_index].first = s;
152 auto s = make_shared<dcp::SMPTESubtitleAsset>();
153 s->set_content_title_text (_film->name());
155 s->set_language (*lang.first);
156 } else if (track->language) {
157 s->set_language (track->language.get());
159 s->set_edit_rate (dcp::Fraction (_film->video_frame_rate(), 1));
160 s->set_reel_number (_reel_index + 1);
161 s->set_time_code_rate (_film->video_frame_rate());
162 s->set_start_time (dcp::Time());
163 if (_film->encrypted ()) {
164 s->set_key (_film->key ());
166 _assets[_reel_index].first = s;
170 for (auto i: subs.string) {
171 /* XXX: couldn't / shouldn't we use period here rather than getting time from the subtitle? */
174 if (_film->interop() && !_include_font) {
177 _assets[_reel_index].first->add (make_shared<dcp::SubtitleString>(i));
180 if (_split_reels && (_reel_index < int(_reels.size()) - 1) && period.from > _reels[_reel_index].from) {
186 auto job = _job.lock ();
188 job->set_progress (float(period.from.get()) / _length.get());
194 SubtitleEncoder::frames_done () const
200 /* XXX: assuming 24fps here but I don't think it matters */
201 return _last->seconds() * 24;