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/*
Copyright (C) 2013-2021 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/audio_mapping.h
* @brief AudioMapping class.
*/
#ifndef DCPOMATIC_AUDIO_MAPPING_H
#define DCPOMATIC_AUDIO_MAPPING_H
#include <dcp/types.h>
#include <libcxml/cxml.h>
#include <vector>
namespace xmlpp {
class Node;
}
class AudioProcessor;
/** @class AudioMapping.
* @brief A many-to-many mapping of audio channels.
*/
class AudioMapping
{
public:
AudioMapping () {}
AudioMapping (int input_channels, int output_channels);
AudioMapping (cxml::ConstNodePtr, int);
/* Default copy constructor is fine */
void as_xml (xmlpp::Node *) const;
void make_zero ();
void make_default (AudioProcessor const * processor, boost::optional<boost::filesystem::path> filename = boost::optional<boost::filesystem::path>());
void set (dcp::Channel input_channel, int output_channel, float);
void set (int input_channel, int output_channel, float);
void set (int input_channel, dcp::Channel output_channel, float);
float get (int input_channel, int output_channel) const;
float get (int input_channel, dcp::Channel output_channel) const;
int input_channels () const {
return _gain.size();
}
int output_channels () const {
return _gain.empty() ? 0 : _gain[0].size();
}
std::string digest () const;
std::list<int> mapped_output_channels () const;
void unmap_all ();
void take_from(AudioMapping const& other);
private:
void setup (int input_channels, int output_channels);
/** Linear gains */
std::vector<std::vector<float>> _gain;
};
#endif
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