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/*
Copyright (C) 2010 Paul Davis
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 __libardour_vbap_h__
#define __libardour_vbap_h__
#include <string>
#include <map>
#include "pbd/cartesian.h"
#include "ardour/panner.h"
#include "ardour/panner_shell.h"
#include "vbap_speakers.h"
namespace ARDOUR {
class Speakers;
class Pannable;
class VBAPanner : public Panner
{
public:
VBAPanner (boost::shared_ptr<Pannable>, boost::shared_ptr<Speakers>);
~VBAPanner ();
void configure_io (ChanCount in, ChanCount /* ignored - we use Speakers */);
ChanCount in() const;
ChanCount out() const;
void set_position (double);
void set_width (double);
void set_elevation (double);
std::set<Evoral::Parameter> what_can_be_automated() const;
static Panner* factory (boost::shared_ptr<Pannable>, boost::shared_ptr<Speakers>);
void distribute (BufferSet& ibufs, BufferSet& obufs, gain_t gain_coeff, pframes_t nframes);
void set_azimuth_elevation (double azimuth, double elevation);
std::string describe_parameter (Evoral::Parameter);
std::string value_as_string (boost::shared_ptr<const AutomationControl>) const;
XMLNode& get_state ();
PBD::AngularVector signal_position (uint32_t n) const;
boost::shared_ptr<Speakers> get_speakers() const;
void reset ();
private:
struct Signal {
PBD::AngularVector direction;
std::vector<double> gains; /* most recently used gain for all speakers */
int outputs[3]; /* most recent set of outputs used (2 or 3, depending on dimension) */
int desired_outputs[3]; /* outputs to use the next time we distribute */
double desired_gains[3]; /* target gains for desired_outputs */
Signal (Session&, VBAPanner&, uint32_t which, uint32_t n_speakers);
void resize_gains (uint32_t n_speakers);
};
std::vector<Signal*> _signals;
boost::shared_ptr<VBAPSpeakers> _speakers;
void compute_gains (double g[3], int ls[3], int azi, int ele);
void update ();
void clear_signals ();
void distribute_one (AudioBuffer& src, BufferSet& obufs, gain_t gain_coeff, pframes_t nframes, uint32_t which);
void distribute_one_automated (AudioBuffer& src, BufferSet& obufs,
samplepos_t start, samplepos_t end, pframes_t nframes,
pan_t** buffers, uint32_t which);
};
} /* namespace */
#endif /* __libardour_vbap_h__ */
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