2 Copyright (C) 2010 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #ifndef __libardour_vbap_speakers_h__
20 #define __libardour_vbap_speakers_h__
25 #include <boost/utility.hpp>
27 #include <pbd/signals.h>
29 #include "ardour/panner.h"
30 #include "ardour/speakers.h"
36 class VBAPSpeakers : public boost::noncopyable {
38 VBAPSpeakers (boost::shared_ptr<Speakers>);
40 typedef std::vector<double> dvector;
41 const dvector matrix (int tuple) const { return _matrices[tuple]; }
42 int speaker_for_tuple (int tuple, int which) const { return _speaker_tuples[tuple][which]; }
44 int n_tuples () const { return _matrices.size(); }
45 int dimension() const { return _dimension; }
47 uint32_t n_speakers() const { return _speakers.size(); }
48 boost::shared_ptr<Speakers> parent() const { return _parent; }
53 static const double MIN_VOL_P_SIDE_LGTH;
55 boost::shared_ptr<Speakers> _parent;
56 std::vector<Speaker> _speakers;
57 PBD::ScopedConnection speaker_connection;
59 struct azimuth_sorter {
60 bool operator() (const Speaker& s1, const Speaker& s2) {
61 return s1.angles().azi < s2.angles().azi;
65 struct twoDmatrix : public dvector {
66 twoDmatrix() : dvector (4, 0.0) {}
69 struct threeDmatrix : public dvector {
70 threeDmatrix() : dvector (9, 0.0) {}
73 struct tmatrix : public dvector {
74 tmatrix() : dvector (3, 0.0) {}
77 std::vector<dvector> _matrices; /* holds matrices for a given speaker combinations */
78 std::vector<tmatrix> _speaker_tuples; /* holds speakers IDs for a given combination */
80 /* A struct for all loudspeakers */
81 struct ls_triplet_chain {
84 struct ls_triplet_chain *next;
87 static double vec_angle(PBD::CartesianVector v1, PBD::CartesianVector v2);
88 static double vec_length(PBD::CartesianVector v1);
89 static double vec_prod(PBD::CartesianVector v1, PBD::CartesianVector v2);
90 static double vol_p_side_lgth(int i, int j,int k, const std::vector<Speaker>&);
91 static void cross_prod(PBD::CartesianVector v1,PBD::CartesianVector v2, PBD::CartesianVector *res);
94 int any_ls_inside_triplet (int a, int b, int c);
95 void add_ldsp_triplet (int i, int j, int k, struct ls_triplet_chain **ls_triplets);
96 int lines_intersect (int i,int j,int k,int l);
97 void calculate_3x3_matrixes (struct ls_triplet_chain *ls_triplets);
98 void choose_speaker_triplets (struct ls_triplet_chain **ls_triplets);
99 void choose_speaker_pairs ();
100 void sort_2D_lss (int* sorted_lss);
101 int calc_2D_inv_tmatrix (double azi1,double azi2, double* inv_mat);
107 #endif /* __libardour_vbap_speakers_h__ */