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/*
Copyright (C) 2025 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/>.
*/
#include "analyse_audio_job.h"
#include "audio_content.h"
#include "copy_dcp_details_to_film.h"
#include "dcp_content.h"
#include "dcp_film_encoder.h"
#include "dcp_transcode_job.h"
#include "film.h"
#include "fix_audio_levels_job.h"
#include "playlist.h"
#include <fmt/format.h>
#include <boost/filesystem.hpp>
#include <string>
#include "i18n.h"
using std::make_shared;
using std::shared_ptr;
using std::string;
using boost::optional;
FixAudioLevelsJob::FixAudioLevelsJob(boost::filesystem::path input_dcp_path, boost::filesystem::path output_dcp_path, float leqm_target, bool make_quieter_dcps_louder)
: Job(shared_ptr<const Film>())
, _input_dcp_path(input_dcp_path)
, _output_dcp_path(output_dcp_path)
, _leqm_target(leqm_target)
, _make_quieter_dcps_louder(make_quieter_dcps_louder)
{
}
string
FixAudioLevelsJob::name() const
{
return fmt::format(_("Correcting audio levels of {} to {}"), _input_dcp_path.string(), _leqm_target);
}
string
FixAudioLevelsJob::json_name() const
{
return N_("fix_audio_levels");
}
void
FixAudioLevelsJob::run()
{
auto input_dcp = make_shared<DCPContent>(_input_dcp_path);
auto film = std::make_shared<Film>(_output_dcp_path);
input_dcp->examine(film, shared_from_this(), true);
film->add_content({input_dcp});
copy_dcp_settings_to_film(input_dcp, film);
auto playlist = make_shared<Playlist>();
playlist->add(film, input_dcp);
AnalyseAudioJob analyse(film, playlist, false, boost::none);
analyse.run();
auto const level = analyse.analysis().leqm();
DCPOMATIC_ASSERT(level);
if ((!_make_quieter_dcps_louder && *level < _leqm_target) || !input_dcp->audio) {
set_progress(1);
set_state(FINISHED_OK);
}
input_dcp->audio->set_gain(_leqm_target - *level);
auto transcode = make_shared<DCPTranscodeJob>(film, TranscodeJob::ChangedBehaviour::IGNORE);
transcode->set_encoder(make_shared<DCPFilmEncoder>(film, transcode, true));
transcode->run();
set_progress(1);
set_state(FINISHED_OK);
}
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