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))
75 shared_ptr<Job> job = _job.lock ();
76 DCPOMATIC_ASSERT (job);
77 job->sub (_("Encoding picture and sound"));
80 DCPTime const frame = DCPTime::from_frames (1, _film->video_frame_rate ());
81 DCPTime const length = _film->length ();
83 int burnt_subtitles = 0;
84 int non_burnt_subtitles = 0;
85 BOOST_FOREACH (shared_ptr<const Content> c, _film->content ()) {
86 if (c->subtitle && c->subtitle->use()) {
87 if (c->subtitle->burn()) {
90 ++non_burnt_subtitles;
95 if (non_burnt_subtitles) {
96 _writer->write (_player->get_subtitle_fonts ());
99 for (DCPTime t; t < length; t += frame) {
101 BOOST_FOREACH (shared_ptr<PlayerVideo> i, _player->get_video (t, true)) {
102 if (!_film->three_d()) {
104 if (i->eyes() == EYES_RIGHT) {
105 /* Discard right-eye images */
107 } else if (i->eyes() == EYES_LEFT) {
108 /* Use left-eye images for both eyes */
109 i->set_eyes (EYES_BOTH);
113 _encoder->encode (i);
116 _writer->write (_player->get_audio (t, frame, true));
118 if (non_burnt_subtitles) {
119 _writer->write (_player->get_subtitles (t, frame, true, false, true));
123 shared_ptr<Job> job = _job.lock ();
124 DCPOMATIC_ASSERT (job);
125 job->set_progress (float(t.get()) / length.get());
129 BOOST_FOREACH (ReferencedReelAsset i, _player->get_reel_assets ()) {
139 Transcoder::current_encoding_rate () const
141 return _encoder->current_encoding_rate ();
145 Transcoder::video_frames_enqueued () const
147 return _encoder->video_frames_enqueued ();