Add new "make-centre" processor.make-centre

This just puts L into L, R into R, and (L+R)/2 into C.

1 files changed, 35 insertions, 0 deletions

diff --git a/src/lib/make_centre.h b/src/lib/make_centre.h
new file mode 100644
index 000000000..9ce07b81e
--- /dev/null
+++ b/src/lib/make_centre.h
@@ -0,0 +1,35 @@
+/*
+    Copyright (C) 2024 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 "audio_processor.h"
+
+
+class MakeCentre : public AudioProcessor
+{
+public:
+	std::string name() const override;
+	std::string id() const override;
+	int out_channels() const override;
+	std::shared_ptr<AudioProcessor> clone(int) const override;
+	std::shared_ptr<AudioBuffers> run(std::shared_ptr<const AudioBuffers>, int channels) override;
+	void make_audio_mapping_default(AudioMapping& mapping) const override;
+	std::vector<NamedChannel> input_names() const override;
+};