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/*
Copyright (C) 2014 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/lib/upmixer_a.h
* @brief UpmixerA class.
*/
#include "audio_processor.h"
#include "audio_filter.h"
/** @class UpmixerA
* @brief Stereo to 5.1 upmixer algorithm by Gérald Maruccia.
*/
class UpmixerA : public AudioProcessor
{
public:
explicit UpmixerA(int sampling_rate);
std::string name() const override;
std::string id() const override;
int out_channels() const override;
std::shared_ptr<AudioProcessor> clone(int) const override;
void flush() override;
void make_audio_mapping_default(AudioMapping& mapping) const override;
std::vector<NamedChannel> input_names() const override;
protected:
std::shared_ptr<AudioBuffers> do_run(std::shared_ptr<const AudioBuffers>, int channels) override;
private:
BandPassAudioFilter _left;
BandPassAudioFilter _right;
BandPassAudioFilter _centre;
LowPassAudioFilter _lfe;
BandPassAudioFilter _ls;
BandPassAudioFilter _rs;
};
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