1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
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 <map>
#include <pbd/signals.h>
#include "ardour/panner.h"
namespace ARDOUR {
class VBAPSpeakers {
public:
struct cart_vec {
float x;
float y;
float z;
};
struct ang_vec {
float azi;
float ele;
float length;
};
static const int MAX_TRIPLET_AMOUNT = 60;
VBAPSpeakers ();
~VBAPSpeakers ();
int add_speaker (double direction, double elevation = 0.0);
void remove_speaker (int id);
void move_speaker (int id, double direction, double elevation = 0.0);
const double* 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; }
static void angle_to_cart(ang_vec *from, cart_vec *to);
PBD::Signal0<void> Changed;
private:
static const double MIN_VOL_P_SIDE_LGTH = 0.01;
int _dimension;
/* A struct for a loudspeaker instance */
struct Speaker {
int id;
cart_vec coords;
ang_vec angles;
Speaker (int, double azimuth, double elevation);
void move (double azimuth, double elevation);
};
std::vector<Speaker> _speakers;
std::vector<double[9]> _matrices; /* holds matrices for a given speaker combinations */
std::vector<int[3]> _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(cart_vec v1, cart_vec v2);
static float vec_length(cart_vec v1);
static float vec_prod(cart_vec v1, cart_vec v2);
static float vol_p_side_lgth(int i, int j,int k, const std::vector<Speaker>&);
static void cross_prod(cart_vec v1,cart_vec v2, cart_vec *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_ls_triplets (struct ls_triplet_chain **ls_triplets);
void choose_ls_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__ */
|
