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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_speakers_h__
#define __libardour_vbap_speakers_h__
#include <string>
#include <vector>
#include <boost/utility.hpp>
#include <pbd/signals.h>
#include "ardour/panner.h"
#include "ardour/speakers.h"
namespace ARDOUR {
class Speakers;
class VBAPSpeakers : public boost::noncopyable {
public:
VBAPSpeakers (boost::shared_ptr<Speakers>);
typedef std::vector<double> dvector;
const dvector matrix (int tuple) const { return _matrices[tuple]; }
int speaker_for_tuple (int tuple, int which) const { return _speaker_tuples[tuple][which]; }
int n_tuples () const { return _matrices.size(); }
int dimension() const { return _dimension; }
uint32_t n_speakers() const { return _speakers.size(); }
boost::shared_ptr<Speakers> parent() const { return _parent; }
~VBAPSpeakers ();
private:
static const double MIN_VOL_P_SIDE_LGTH = 0.01;
int _dimension;
boost::shared_ptr<Speakers> _parent;
std::vector<Speaker> _speakers;
PBD::ScopedConnection speaker_connection;
struct azimuth_sorter {
bool operator() (const Speaker& s1, const Speaker& s2) {
return s1.angles().azi < s2.angles().azi;
}
};
struct twoDmatrix : public dvector {
twoDmatrix() : dvector (4, 0.0) {}
};
struct threeDmatrix : public dvector {
threeDmatrix() : dvector (9, 0.0) {}
};
struct tmatrix : public dvector {
tmatrix() : dvector (3, 0.0) {}
};
std::vector<dvector> _matrices; /* holds matrices for a given speaker combinations */
std::vector<tmatrix> _speaker_tuples; /* holds speakers IDs for a given combination */
/* A struct for all loudspeakers */
struct ls_triplet_chain {
int ls_nos[3];
float inv_mx[9];
struct ls_triplet_chain *next;
};
static float vec_angle(PBD::CartesianVector v1, PBD::CartesianVector v2);
static float vec_length(PBD::CartesianVector v1);
static float vec_prod(PBD::CartesianVector v1, PBD::CartesianVector v2);
static float vol_p_side_lgth(int i, int j,int k, const std::vector<Speaker>&);
static void cross_prod(PBD::CartesianVector v1,PBD::CartesianVector v2, PBD::CartesianVector *res);
void update ();
int any_ls_inside_triplet (int a, int b, int c);
void add_ldsp_triplet (int i, int j, int k, struct ls_triplet_chain **ls_triplets);
int lines_intersect (int i,int j,int k,int l);
void calculate_3x3_matrixes (struct ls_triplet_chain *ls_triplets);
void choose_speaker_triplets (struct ls_triplet_chain **ls_triplets);
void choose_speaker_pairs ();
void sort_2D_lss (int* sorted_lss);
int calc_2D_inv_tmatrix (double azi1,double azi2, double* inv_mat);
};
} /* namespace */
#endif /* __libardour_vbap_speakers_h__ */
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