Add simple stereo-5.1 upmixer.

1 files changed, 43 insertions, 0 deletions

diff --git a/src/lib/upmixer_a.h b/src/lib/upmixer_a.h
new file mode 100644
index 000000000..32e3f5fb6
--- /dev/null
+++ b/src/lib/upmixer_a.h
@@ -0,0 +1,43 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    This program 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.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "audio_processor.h"
+#include "audio_filter.h"
+
+class UpmixerA : public AudioProcessor
+{
+public:
+	UpmixerA (int sampling_rate);
+	
+	std::string name () const;
+	std::string id () const;
+	ChannelCount in_channels () const;
+	int out_channels (int) const;
+	boost::shared_ptr<AudioProcessor> clone (int) const;
+	boost::shared_ptr<AudioBuffers> run (boost::shared_ptr<const AudioBuffers>);
+	void flush ();
+
+private:
+	BandPassAudioFilter _left;
+	BandPassAudioFilter _right;
+	BandPassAudioFilter _centre;
+	BandPassAudioFilter _lfe;
+	BandPassAudioFilter _ls;
+	BandPassAudioFilter _rs;
+};