2 Copyright (C) 2012-2016 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 /** @file src/transcoder.cc
22 * @brief A class which takes a Film and some Options, then uses those to transcode the film.
24 * A decoder is selected according to the content type, and the encoder can be specified
25 * as a parameter to the constructor.
28 #include "transcoder.h"
31 #include "video_decoder.h"
32 #include "audio_decoder.h"
36 #include "compose.hpp"
37 #include "referenced_reel_asset.h"
38 #include "subtitle_content.h"
39 #include "player_video.h"
40 #include <boost/signals2.hpp>
41 #include <boost/foreach.hpp>
49 using boost::shared_ptr;
50 using boost::weak_ptr;
51 using boost::dynamic_pointer_cast;
53 /** Construct a transcoder.
54 * @param f Film that we are transcoding.
55 * @param j Job that this transcoder is being used in.
57 Transcoder::Transcoder (shared_ptr<const Film> film, weak_ptr<Job> j)
60 , _player (new Player (film, film->playlist ()))
61 , _writer (new Writer (film, j))
62 , _encoder (new Encoder (film, _writer))
64 , _non_burnt_subtitles (false)
66 _player->Video.connect (bind (&Transcoder::video, this, _1, _2));
67 _player->Audio.connect (bind (&Transcoder::audio, this, _1, _2));
68 _player->Subtitle.connect (bind (&Transcoder::subtitle, this, _1, _2));
70 BOOST_FOREACH (shared_ptr<const Content> c, _film->content ()) {
71 if (c->subtitle && c->subtitle->use() && !c->subtitle->burn()) {
72 _non_burnt_subtitles = true;
84 shared_ptr<Job> job = _job.lock ();
85 DCPOMATIC_ASSERT (job);
86 job->sub (_("Encoding"));
89 if (_non_burnt_subtitles) {
90 _writer->write (_player->get_subtitle_fonts ());
93 while (!_player->pass ()) {}
95 BOOST_FOREACH (ReferencedReelAsset i, _player->get_reel_assets ()) {
105 Transcoder::video (shared_ptr<PlayerVideo> data, DCPTime time)
107 if (!_film->three_d() && data->eyes() == EYES_LEFT) {
108 /* Use left-eye images for both eyes */
109 data->set_eyes (EYES_BOTH);
112 _encoder->encode (data, time);
116 Transcoder::audio (shared_ptr<AudioBuffers> data, DCPTime time)
118 cout << "tx receives " << data->frames() << " @ " << to_string(time) << "\n";
119 _writer->write (data);
121 shared_ptr<Job> job = _job.lock ();
122 DCPOMATIC_ASSERT (job);
123 job->set_progress (float(time.get()) / _film->length().get());
127 Transcoder::subtitle (PlayerSubtitles data, DCPTimePeriod period)
129 if (_non_burnt_subtitles) {
130 _writer->write (data, period);
135 Transcoder::current_encoding_rate () const
137 return _encoder->current_encoding_rate ();
141 Transcoder::video_frames_enqueued () const
143 return _encoder->video_frames_enqueued ();