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/*
Copyright (C) 2013 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.
*/
#ifndef DCPOMATIC_AUDIO_MAPPING_H
#define DCPOMATIC_AUDIO_MAPPING_H
#include <vector>
#include <libdcp/types.h>
#include <boost/shared_ptr.hpp>
namespace xmlpp {
class Node;
}
namespace cxml {
class Node;
}
/** A many-to-many mapping from some content channels to DCP channels.
* The number of content channels is set on construction and fixed,
* and then each of those content channels are mapped to each DCP channel
* by a linear gain.
*/
class AudioMapping
{
public:
AudioMapping ();
AudioMapping (int);
AudioMapping (boost::shared_ptr<const cxml::Node>, int);
/* Default copy constructor is fine */
void as_xml (xmlpp::Node *) const;
void make_default ();
void set (int, libdcp::Channel, float);
float get (int, libdcp::Channel) const;
int content_channels () const {
return _content_channels;
}
private:
void setup (int);
int _content_channels;
std::vector<std::vector<float> > _gain;
};
#endif
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