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/*
Copyright (C) 2012-2020 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file src/dcp_film_encoder.cc
* @brief A class which takes a Film and some Options, then uses those to encode the film into a DCP.
*
* A decoder is selected according to the content type, and the encoder can be specified
* as a parameter to the constructor.
*/
#include "audio_decoder.h"
#include "dcp_film_encoder.h"
#include "film.h"
#include "j2k_encoder.h"
#include "job.h"
#include "mpeg2_encoder.h"
#include "player.h"
#include "player_video.h"
#include "referenced_reel_asset.h"
#include "text_content.h"
#include "video_decoder.h"
#include "writer.h"
#include <boost/signals2.hpp>
#include <iostream>
#include "i18n.h"
using std::cout;
using std::dynamic_pointer_cast;
using std::list;
using std::make_shared;
using std::shared_ptr;
using std::string;
using std::vector;
using std::weak_ptr;
using boost::optional;
#if BOOST_VERSION >= 106100
using namespace boost::placeholders;
#endif
using namespace dcpomatic;
/** Construct a DCP encoder.
* @param film Film that we are encoding.
* @param job Job that this encoder is being used in.
*/
DCPFilmEncoder::DCPFilmEncoder(shared_ptr<const Film> film, weak_ptr<Job> job)
: FilmEncoder(film, job)
, _finishing(false)
, _non_burnt_subtitles(false)
{
_player_video_connection = _player.Video.connect(bind(&DCPFilmEncoder::video, this, _1, _2));
_player_audio_connection = _player.Audio.connect(bind(&DCPFilmEncoder::audio, this, _1, _2));
_player_text_connection = _player.Text.connect(bind(&DCPFilmEncoder::text, this, _1, _2, _3, _4));
_player_atmos_connection = _player.Atmos.connect(bind(&DCPFilmEncoder::atmos, this, _1, _2, _3));
for (auto c: film->content()) {
for (auto i: c->text) {
if (i->use() && !i->burn()) {
_non_burnt_subtitles = true;
}
}
}
}
DCPFilmEncoder::~DCPFilmEncoder()
{
/* We must stop receiving more video data before we die */
_player_video_connection.release();
_player_audio_connection.release();
_player_text_connection.release();
_player_atmos_connection.release();
}
void
DCPFilmEncoder::go()
{
auto job = _job.lock();
_writer.reset(new Writer(_film, job, _film->dir(_film->dcp_name())));
switch (_film->video_encoding()) {
case VideoEncoding::JPEG2000:
_encoder.reset(new J2KEncoder(_film, *_writer));
break;
case VideoEncoding::MPEG2:
_encoder.reset(new MPEG2Encoder(_film, *_writer));
break;
case VideoEncoding::COUNT:
DCPOMATIC_ASSERT(false);
}
/* Now that we have a Writer we can clear out the assets directory */
clean_up_asset_directory(_film->assets_path());
_writer->start();
_encoder->begin();
{
auto job = _job.lock();
DCPOMATIC_ASSERT(job);
job->sub(_("Encoding"));
}
if (_non_burnt_subtitles) {
_writer->write(_player.get_subtitle_fonts());
}
auto const length = _film->length().frames_round(_film->video_frame_rate());
int passes = 0;
while (!_player.pass()) {
if ((++passes % 8) == 0) {
auto job = _job.lock();
DCPOMATIC_ASSERT(job);
job->set_progress(static_cast<float>(frames_done()) / length);
}
}
for (auto i: get_referenced_reel_assets(_film, _film->playlist())) {
_writer->write(i);
}
_finishing = true;
_encoder->end();
_writer->finish();
}
void
DCPFilmEncoder::pause()
{
_encoder->pause();
}
void
DCPFilmEncoder::resume()
{
_encoder->resume();
}
void
DCPFilmEncoder::video(shared_ptr<PlayerVideo> data, DCPTime time)
{
_encoder->encode(data, time);
}
void
DCPFilmEncoder::audio(shared_ptr<AudioBuffers> data, DCPTime time)
{
DCPOMATIC_ASSERT(_writer);
_writer->write(data, time);
}
void
DCPFilmEncoder::text(PlayerText data, TextType type, optional<DCPTextTrack> track, DCPTimePeriod period)
{
if (type == TextType::CLOSED_CAPTION || _non_burnt_subtitles) {
DCPOMATIC_ASSERT(_writer);
_writer->write(data, type, track, period);
}
}
void
DCPFilmEncoder::atmos(shared_ptr<const dcp::AtmosFrame> data, DCPTime time, AtmosMetadata metadata)
{
DCPOMATIC_ASSERT(_writer);
_writer->write(data, time, metadata);
}
optional<float>
DCPFilmEncoder::current_rate() const
{
if (!_encoder) {
return {};
}
return _encoder->current_encoding_rate();
}
Frame
DCPFilmEncoder::frames_done() const
{
if (!_encoder) {
return 0;
}
return _encoder->video_frames_encoded();
}
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