Add DCP-o-matic Processor tool.

1 files changed, 99 insertions, 0 deletions

diff --git a/src/lib/fix_audio_levels_job.cc b/src/lib/fix_audio_levels_job.cc
new file mode 100644
index 000000000..b5d9e39d9
--- /dev/null
+++ b/src/lib/fix_audio_levels_job.cc
@@ -0,0 +1,99 @@
+/*
+    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);
+}