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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_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 "dcp_encoder.h"
#include "j2k_encoder.h"
#include "film.h"
#include "video_decoder.h"
#include "audio_decoder.h"
#include "player.h"
#include "job.h"
#include "writer.h"
#include "referenced_reel_asset.h"
#include "text_content.h"
#include "player_video.h"
#include <dcp/compose.h>
#include <boost/signals2.hpp>
#include <iostream>
#include "i18n.h"
using std::string;
using std::cout;
using std::list;
using std::vector;
using std::shared_ptr;
using std::weak_ptr;
using std::dynamic_pointer_cast;
using std::make_shared;
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.
*/
DCPEncoder::DCPEncoder (shared_ptr<const Film> film, weak_ptr<Job> job)
: Encoder (film, job)
, _finishing (false)
, _non_burnt_subtitles (false)
{
_player_video_connection = _player->Video.connect (bind (&DCPEncoder::video, this, _1, _2));
_player_audio_connection = _player->Audio.connect (bind (&DCPEncoder::audio, this, _1, _2));
_player_text_connection = _player->Text.connect (bind (&DCPEncoder::text, this, _1, _2, _3, _4));
_player_atmos_connection = _player->Atmos.connect (bind (&DCPEncoder::atmos, this, _1, _2, _3));
for (auto c: film->content ()) {
for (auto i: c->text) {
if (i->use() && !i->burn()) {
_non_burnt_subtitles = true;
}
}
}
}
DCPEncoder::~DCPEncoder ()
{
/* 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
DCPEncoder::go ()
{
_writer = make_shared<Writer>(_film, _job);
_writer->start ();
_j2k_encoder = make_shared<J2KEncoder>(_film, _writer);
_j2k_encoder->begin ();
{
auto job = _job.lock ();
DCPOMATIC_ASSERT (job);
job->sub (_("Encoding"));
}
if (_non_burnt_subtitles) {
auto fonts = _player->get_subtitle_fonts ();
if (fonts.size() > 1 && _film->interop()) {
/* Interop will ignore second and subsequent <LoadFont>s so don't even
write them as they upset some validators.
*/
auto first = fonts.front();
fonts.clear ();
fonts.push_back (first);
}
_writer->write (fonts);
}
while (!_player->pass ()) {}
for (auto i: _player->get_reel_assets()) {
_writer->write (i);
}
_finishing = true;
_j2k_encoder->end ();
_writer->finish (_film->dir(_film->dcp_name()));
}
void
DCPEncoder::video (shared_ptr<PlayerVideo> data, DCPTime time)
{
_j2k_encoder->encode (data, time);
}
void
DCPEncoder::audio (shared_ptr<AudioBuffers> data, DCPTime time)
{
_writer->write (data, time);
auto job = _job.lock ();
DCPOMATIC_ASSERT (job);
job->set_progress (float(time.get()) / _film->length().get());
}
void
DCPEncoder::text (PlayerText data, TextType type, optional<DCPTextTrack> track, DCPTimePeriod period)
{
if (type == TextType::CLOSED_CAPTION || _non_burnt_subtitles) {
_writer->write (data, type, track, period);
}
}
void
DCPEncoder::atmos (shared_ptr<const dcp::AtmosFrame> data, DCPTime time, AtmosMetadata metadata)
{
_writer->write (data, time, metadata);
}
optional<float>
DCPEncoder::current_rate () const
{
if (!_j2k_encoder) {
return {};
}
return _j2k_encoder->current_encoding_rate ();
}
Frame
DCPEncoder::frames_done () const
{
if (!_j2k_encoder) {
return 0;
}
return _j2k_encoder->video_frames_enqueued ();
}
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