Missed update to private test repo version.
[dcpomatic.git] / src / lib / dcp_encoder.cc
1 /*
2     Copyright (C) 2012-2018 Carl Hetherington <cth@carlh.net>
3
4     This file is part of DCP-o-matic.
5
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.
10
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.
15
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/>.
18
19 */
20
21 /** @file  src/dcp_encoder.cc
22  *  @brief A class which takes a Film and some Options, then uses those to encode the film into a DCP.
23  *
24  *  A decoder is selected according to the content type, and the encoder can be specified
25  *  as a parameter to the constructor.
26  */
27
28 #include "dcp_encoder.h"
29 #include "j2k_encoder.h"
30 #include "film.h"
31 #include "video_decoder.h"
32 #include "audio_decoder.h"
33 #include "player.h"
34 #include "job.h"
35 #include "writer.h"
36 #include "compose.hpp"
37 #include "referenced_reel_asset.h"
38 #include "text_content.h"
39 #include "player_video.h"
40 #include <boost/signals2.hpp>
41 #include <boost/foreach.hpp>
42 #include <iostream>
43
44 #include "i18n.h"
45
46 using std::string;
47 using std::cout;
48 using std::list;
49 using boost::shared_ptr;
50 using boost::weak_ptr;
51 using boost::dynamic_pointer_cast;
52 using boost::optional;
53
54 /** Construct a DCP encoder.
55  *  @param film Film that we are encoding.
56  *  @param job Job that this encoder is being used in.
57  */
58 DCPEncoder::DCPEncoder (shared_ptr<const Film> film, weak_ptr<Job> job)
59         : Encoder (film, job)
60         , _finishing (false)
61         , _non_burnt_subtitles (false)
62 {
63         _player_video_connection = _player->Video.connect (bind (&DCPEncoder::video, this, _1, _2));
64         _player_audio_connection = _player->Audio.connect (bind (&DCPEncoder::audio, this, _1, _2));
65         _player_text_connection = _player->Text.connect (bind (&DCPEncoder::text, this, _1, _2, _3, _4));
66
67         BOOST_FOREACH (shared_ptr<const Content> c, film->content ()) {
68                 BOOST_FOREACH (shared_ptr<TextContent> i, c->text) {
69                         if (i->use() && !i->burn()) {
70                                 _non_burnt_subtitles = true;
71                         }
72                 }
73         }
74 }
75
76 DCPEncoder::~DCPEncoder ()
77 {
78         /* We must stop receiving more video data before we die */
79         _player_video_connection.release ();
80         _player_audio_connection.release ();
81         _player_text_connection.release ();
82 }
83
84 void
85 DCPEncoder::go ()
86 {
87         _writer.reset (new Writer (_film, _job));
88         _writer->start ();
89
90         _j2k_encoder.reset (new J2KEncoder (_film, _writer));
91         _j2k_encoder->begin ();
92
93         {
94                 shared_ptr<Job> job = _job.lock ();
95                 DCPOMATIC_ASSERT (job);
96                 job->sub (_("Encoding"));
97         }
98
99         if (_non_burnt_subtitles) {
100                 list<shared_ptr<Font> > fonts = _player->get_subtitle_fonts ();
101
102                 if (fonts.size() > 1 && _film->interop()) {
103                         /* Interop will ignore second and subsequent <LoadFont>s so don't even
104                            write them as they upset some validators.
105                         */
106                         shared_ptr<Font> first = fonts.front ();
107                         fonts.clear ();
108                         fonts.push_back (first);
109                 }
110
111                 _writer->write (fonts);
112         }
113
114         while (!_player->pass ()) {}
115
116         BOOST_FOREACH (ReferencedReelAsset i, _player->get_reel_assets ()) {
117                 _writer->write (i);
118         }
119
120         _finishing = true;
121         _j2k_encoder->end ();
122         _writer->finish ();
123 }
124
125 void
126 DCPEncoder::video (shared_ptr<PlayerVideo> data, DCPTime time)
127 {
128         if (!_film->three_d() && data->eyes() == EYES_LEFT) {
129                 /* Use left-eye images for both eyes */
130                 data->set_eyes (EYES_BOTH);
131         }
132
133         _j2k_encoder->encode (data, time);
134 }
135
136 void
137 DCPEncoder::audio (shared_ptr<AudioBuffers> data, DCPTime time)
138 {
139         _writer->write (data, time);
140
141         shared_ptr<Job> job = _job.lock ();
142         DCPOMATIC_ASSERT (job);
143         job->set_progress (float(time.get()) / _film->length().get());
144 }
145
146 void
147 DCPEncoder::text (PlayerText data, TextType type, optional<DCPTextTrack> track, DCPTimePeriod period)
148 {
149         if (type == TEXT_CLOSED_CAPTION || _non_burnt_subtitles) {
150                 _writer->write (data, type, track, period);
151         }
152 }
153
154 float
155 DCPEncoder::current_rate () const
156 {
157         if (!_j2k_encoder) {
158                 return 0;
159         }
160
161         return _j2k_encoder->current_encoding_rate ();
162 }
163
164 Frame
165 DCPEncoder::frames_done () const
166 {
167         if (!_j2k_encoder) {
168                 return 0;
169         }
170
171         return _j2k_encoder->video_frames_enqueued ();
172 }