[PD-cvs] externals/vbap rvbap-demo.pd, NONE, 1.1.2.1 rvbap-help.pd, NONE, 1.1.2.1 rvbap.c, NONE, 1.1.2.1
Hans-Christoph Steiner
eighthave at users.sourceforge.net
Wed Sep 26 00:39:31 CEST 2007
Update of /cvsroot/pure-data/externals/vbap
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv20058
Added Files:
Tag: branch-v0-39-2-extended
rvbap-demo.pd rvbap-help.pd rvbap.c
Log Message:
backported Frank's port of rvbap to Pd-0.39.3-extended
--- NEW FILE: rvbap-demo.pd ---
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#X text 63 21 RVBAP - Demo how to use [mtx_*~];
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--- NEW FILE: rvbap-help.pd ---
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example "define_loudspeakers 2 -45 45 0 180";
#X text 63 21 VBAP and define_loudspeakers;
#X text 430 338 The spread-parameter can be used to prevent a situation
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#X text 231 410 actual location;
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#X text 131 241 azimuth \, elevation \, spread and distance;
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#X text 428 111 1) Use define_loudspeakers to list the speaker positions.
The example here defines loudspeakers in three dimensions (the first
parameter). For each speaker \, define its azimuth and elevation. Here
we have speakers front left and right with no elevation (-45 0 45 0)
and front and back with 45 degrees of elevation (0 45 180 45). Send
the data to vbap.;
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a reverberated signal and has control to set the radial distance of
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amount of reverberated signal to generate. This is meant to be used
with [matrix~] or [mtx_*~] from the IEMmatrix collection of externals.
;
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(1-inf \, default 1) for the desired location. Bang the first inlet
and vbap will output gain-factors for each speaker and the actual location
produced. This can be different from the desired one depending where
your speakers are.;
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#X text 429 467 To use it \, create a [mtx_*~] object that has double
the amount of outlets as you have speakers. Send the first half of
the matrix-signals to the speakers and the second half through a reverbarator
and add them to the respective speaker outs. The example shows this
in action for four speakers. Pay attention to the "set-element" subpatch
which translates the [rvbap] output to set matrix elements correctly.
;
#X text 193 439 <= here's the output of [rvbap];
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--- NEW FILE: rvbap.c ---
/* rvbap.c vers 1.1
written by Ville Pulkki 1999-2003
Helsinki University of Technology
and
Unversity of California at Berkeley
and written by Olaf Matthes 2003, 2007
Pd port by Frank Barknecht
See copyright in file with name COPYRIGHT */
#include <math.h>
#ifdef MAXMSP
#include "ext.h" /* you must include this - it contains the external object's link to max */
#endif
#ifdef PD
#include "m_pd.h" /* you must include this - it contains the external object's link to pure data */
#endif
#define MAX_LS_SETS 100 // maximum number of loudspeaker sets (triplets or pairs) allowed
#define MAX_LS_AMOUNT 55 // maximum amount of loudspeakers, can be increased
#ifdef _WINDOWS
#define sqrtf sqrt
#endif
#ifdef MAXMSP
typedef struct vbap /* This defines the object as an entity made up of other things */
{
t_object x_ob;
long x_azi; // panning direction azimuth
long x_ele; // panning direction elevation
float x_dist; // sound source distance (1.0-infinity)
void *x_outlet0; /* outlet creation - inlets are automatic */
void *x_outlet1;
void *x_outlet2;
void *x_outlet3;
void *x_outlet4;
float x_set_inv_matx[MAX_LS_SETS][9]; // inverse matrice for each loudspeaker set
float x_set_matx[MAX_LS_SETS][9]; // matrice for each loudspeaker set
long x_lsset[MAX_LS_SETS][3]; // channel numbers of loudspeakers in each LS set
long x_lsset_available; // have loudspeaker sets been defined with define_loudspeakers
long x_lsset_amount; // amount of loudspeaker sets
long x_ls_amount; // amount of loudspeakers
long x_dimension; // 2 or 3
long x_spread; // speading amount of virtual source (0-100)
float x_spread_base[3]; // used to create uniform spreading
float x_reverb_gs[MAX_LS_SETS]; // correction value for each loudspeaker set to get equal volume
} t_rvbap;
#endif
#ifdef PD
typedef struct vbap /* This defines the object as an entity made up of other things */
{
t_object x_ob;
t_float x_azi; // panning direction azimuth
t_float x_ele; // panning direction elevation
t_float x_dist; // sound source distance (1.0-infinity)
void *x_outlet0; /* outlet creation - inlets are automatic */
void *x_outlet1;
void *x_outlet2;
void *x_outlet3;
void *x_outlet4;
float x_set_inv_matx[MAX_LS_SETS][9]; // inverse matrice for each loudspeaker set
t_float x_set_matx[MAX_LS_SETS][9]; // matrice for each loudspeaker set
long x_lsset[MAX_LS_SETS][3]; // channel numbers of loudspeakers in each LS set
long x_lsset_available; // have loudspeaker sets been defined with define_loudspeakers
long x_lsset_amount; // amount of loudspeaker sets
long x_ls_amount; // amount of loudspeakers
long x_dimension; // 2 or 3
t_float x_spread; // speading amount of virtual source (0-100)
float x_spread_base[3]; // used to create uniform spreading
float x_reverb_gs[MAX_LS_SETS]; // correction value for each loudspeaker set to get equal volume
} t_rvbap;
#endif
// Globals
static void new_spread_dir(t_rvbap *x, float spreaddir[3], float vscartdir[3], float spread_base[3]);
static void new_spread_base(t_rvbap *x, float spreaddir[3], float vscartdir[3]);
#ifdef MAXMSP
static void *rvbap_class;
static void rvbap_assist(t_rvbap *x, void *b, long m, long a, char *s);
static void rvbap_in1(t_rvbap *x, long n);
static void rvbap_in2(t_rvbap *x, long n);
static void rvbap_in3(t_rvbap *x, long n);
static void rvbap_in4(t_rvbap *x, long n);
static void rvbap_ft1(t_rvbap *x, double n);
static void rvbap_ft2(t_rvbap *x, double n);
static void rvbap_ft3(t_rvbap *x, double n);
static void rvbap_ft4(t_rvbap *x, double n);
#endif
#ifdef PD
static t_class *rvbap_class;
#endif
static void cross_prod(float v1[3], float v2[3],
float v3[3]);
static void additive_vbap(float *final_gs, float cartdir[3], t_rvbap *x);
static void rvbap_bang(t_rvbap *x);
static void rvbap_matrix(t_rvbap *x, t_symbol *s, int ac, t_atom *av);
static void spread_it(t_rvbap *x, float *final_gs);
static void *rvbap_new(t_symbol *s, int ac, t_atom *av); // using A_GIMME - typed message list
static void vbap(float g[3], long ls[3], t_rvbap *x);
static void angle_to_cart(long azi, long ele, float res[3]);
static void cart_to_angle(float cvec[3], float avec[3]);
static void equal_reverb(t_rvbap *x, float *final_gs);
/* above are the prototypes for the methods/procedures/functions you will use */
#ifdef PD
void rvbap_setup(void)
{
rvbap_class = class_new(gensym("rvbap"), (t_newmethod)rvbap_new, 0, (short)sizeof(t_rvbap), 0, A_GIMME, 0);
/* rvbap_new = creation function, A_DEFLONG = its (optional) arguement is a long (32-bit) int */
class_addbang(rvbap_class, rvbap_bang);
class_addmethod(rvbap_class, (t_method)rvbap_matrix, gensym("loudspeaker-matrices"), A_GIMME, 0);
}
#endif
#ifdef MAXMSP
int main(void)
{
setup((t_messlist **)&rvbap_class, (method)rvbap_new, 0L, (short)sizeof(t_rvbap), 0L, A_GIMME, 0);
/* rvbap_new = creation function, A_DEFLONG = its (optional) arguement is a long (32-bit) int */
addmess((method)rvbap_assist, "assist", A_CANT, 0);
addbang((method)rvbap_bang); /* the procedure it uses when it gets a bang in the left inlet */
addinx((method)rvbap_in1, 1); /* the rocedure for an int in the right inlet (inlet 1) */
addinx((method)rvbap_in2, 2); /* the rocedure for an int in the right inlet (inlet 2) */
addinx((method)rvbap_in3, 3);
addinx((method)rvbap_in4, 4);
addftx((method)rvbap_ft1, 1); /* the rocedure for an int in the right inlet (inlet 1) */
addftx((method)rvbap_ft2, 2); /* the rocedure for an int in the right inlet (inlet 2) */
addftx((method)rvbap_ft3, 3);
addftx((method)rvbap_ft4, 4);
addmess((method)rvbap_matrix, "loudspeaker-matrices", A_GIMME, 0);
post("rvbap v1.1, © 2003-2007 by Olaf Matthes, based on vbap by Ville Pulkki");
return 0;
}
static void rvbap_assist(t_rvbap *x, void *b, long m, long a, char *s)
{
switch(m) {
case 1: // inlet
switch(a) {
case 0:
sprintf(s, "define_loudspeakers / Bang to output actual values.");
break;
case 1:
sprintf(s, "(int) azimuth");
break;
case 2:
sprintf(s, "(int) elevation");
break;
case 3:
sprintf(s, "(int) spreading");
break;
case 4:
sprintf(s, "(float) distance");
break;
}
break;
case 2: // outlet
switch(a) {
case 0:
sprintf(s, "(list) matrix~ values");
break;
case 1:
sprintf(s, "(int) actual azimuth");
break;
case 2:
sprintf(s, "(int) actual elevation");
break;
case 3:
sprintf(s, "(int) actual spreading");
break;
case 4:
sprintf(s, "(float) actual distance");
break;
}
break;
}
}
#endif
/* end MAXMSP */
static void angle_to_cart(long azi, long ele, float res[3])
/* converts angular coordinates to cartesian */
{
float atorad = (2.0 * 3.1415927 / 360.0) ;
res[0] = cos((float) azi * atorad) * cos((float) ele * atorad);
res[1] = sin((float) azi * atorad) * cos((float) ele * atorad);
res[2] = sin((float) ele * atorad);
}
static void cart_to_angle(float cvec[3], float avec[3])
// converts cartesian coordinates to angular
{
float tmp, tmp2, tmp3, tmp4;
float atorad = (float)(2.0 * 3.1415927 / 360.0) ;
float pi = (float)3.1415927;
float power;
float dist, atan_y_per_x, atan_x_pl_y_per_z;
float azi, ele;
if(cvec[0]==0.0)
atan_y_per_x = pi / 2;
else
atan_y_per_x = atan(cvec[1] / cvec[0]);
azi = atan_y_per_x / atorad;
if(cvec[0]<0.0)
azi +=180;
dist = sqrt(cvec[0]*cvec[0] + cvec[1]*cvec[1]);
if(cvec[2]==0.0)
atan_x_pl_y_per_z = 0.0;
else
atan_x_pl_y_per_z = atan(cvec[2] / dist);
if(dist == 0.0)
if(cvec[2]<0.0)
atan_x_pl_y_per_z = -pi/2.0;
else
atan_x_pl_y_per_z = pi/2.0;
ele = atan_x_pl_y_per_z / atorad;
dist = sqrtf(cvec[0] * cvec[0] +cvec[1] * cvec[1] +cvec[2]*cvec[2]);
avec[0]=azi;
avec[1]=ele;
avec[2]=dist;
}
static void vbap(float g[3], long ls[3], t_rvbap *x)
{
/* calculates gain factors using loudspeaker setup and given direction */
float power;
int i,j,k, gains_modified;
float small_g;
float big_sm_g, gtmp[3];
long winner_set=0;
float cartdir[3];
float new_cartdir[3];
float new_angle_dir[3];
long dim = x->x_dimension;
long neg_g_am, best_neg_g_am;
// transfering the azimuth angle to a decent value
while(x->x_azi > 180)
x->x_azi -= 360;
while(x->x_azi < -179)
x->x_azi += 360;
// transferring the elevation to a decent value
if(dim == 3){
while(x->x_ele > 180)
x->x_ele -= 360;
while(x->x_ele < -179)
x->x_ele += 360;
} else
x->x_ele = 0;
// go through all defined loudspeaker sets and find the set which
// has all positive values. If such is not found, set with largest
// minimum value is chosen. If at least one of gain factors of one LS set is negative
// it means that the virtual source does not lie in that LS set.
angle_to_cart(x->x_azi,x->x_ele,cartdir);
big_sm_g = -100000.0; // initial value for largest minimum gain value
best_neg_g_am=3; // how many negative values in this set
for(i=0;i<x->x_lsset_amount;i++){
small_g = 10000000.0;
neg_g_am = 3;
for(j=0;j<dim;j++){
gtmp[j]=0.0;
for(k=0;k<dim;k++)
gtmp[j]+=cartdir[k]* x->x_set_inv_matx[i][k+j*dim];
if(gtmp[j] < small_g)
small_g = gtmp[j];
if(gtmp[j]>= -0.01)
neg_g_am--;
}
if(small_g > big_sm_g && neg_g_am <= best_neg_g_am){
big_sm_g = small_g;
best_neg_g_am = neg_g_am;
winner_set=i;
g[0]=gtmp[0]; g[1]=gtmp[1];
ls[0]= x->x_lsset[i][0]; ls[1]= x->x_lsset[i][1];
if(dim==3){
g[2]=gtmp[2];
ls[2]= x->x_lsset[i][2];
} else {
g[2]=0.0;
ls[2]=0;
}
}
}
// If chosen set produced a negative value, make it zero and
// calculate direction that corresponds to these new
// gain values. This happens when the virtual source is outside of
// all loudspeaker sets.
if(dim==3){
gains_modified=0;
for(i=0;i<dim;i++)
if(g[i]<-0.01){
g[i]=0.0001;
gains_modified=1;
}
if(gains_modified==1){
new_cartdir[0] = x->x_set_matx[winner_set][0] * g[0]
+ x->x_set_matx[winner_set][1] * g[1]
+ x->x_set_matx[winner_set][2] * g[2];
new_cartdir[1] = x->x_set_matx[winner_set][3] * g[0]
+ x->x_set_matx[winner_set][4] * g[1]
+ x->x_set_matx[winner_set][5] * g[2];
new_cartdir[2] = x->x_set_matx[winner_set][6] * g[0]
+ x->x_set_matx[winner_set][7] * g[1]
+ x->x_set_matx[winner_set][8] * g[2];
cart_to_angle(new_cartdir,new_angle_dir);
x->x_azi = (long) (new_angle_dir[0] + 0.5);
x->x_ele = (long) (new_angle_dir[1] + 0.5);
}
}
power=sqrt(g[0]*g[0] + g[1]*g[1] + g[2]*g[2]);
g[0] /= power;
g[1] /= power;
g[2] /= power;
}
static void cross_prod(float v1[3], float v2[3],
float v3[3])
// vector cross product
{
float length;
v3[0] = (v1[1] * v2[2] ) - (v1[2] * v2[1]);
v3[1] = (v1[2] * v2[0] ) - (v1[0] * v2[2]);
v3[2] = (v1[0] * v2[1] ) - (v1[1] * v2[0]);
length= sqrt(v3[0]*v3[0] + v3[1]*v3[1] + v3[2]*v3[2]);
v3[0] /= length;
v3[1] /= length;
v3[2] /= length;
}
static void additive_vbap(float *final_gs, float cartdir[3], t_rvbap *x)
// calculates gains to be added to previous gains, used in
// multiple direction panning (source spreading)
{
float power;
int i,j,k, gains_modified;
float small_g;
float big_sm_g, gtmp[3];
long winner_set;
float new_cartdir[3];
float new_angle_dir[3];
long dim = x->x_dimension;
long neg_g_am, best_neg_g_am;
float g[3];
long ls[3] = { 0, 0, 0 };
big_sm_g = -100000.0;
best_neg_g_am=3;
for(i=0;i<x->x_lsset_amount;i++){
small_g = 10000000.0;
neg_g_am = 3;
for(j=0;j<dim;j++){
gtmp[j]=0.0;
for(k=0;k<dim;k++)
gtmp[j]+=cartdir[k]* x->x_set_inv_matx[i][k+j*dim];
if(gtmp[j] < small_g)
small_g = gtmp[j];
if(gtmp[j]>= -0.01)
neg_g_am--;
}
if(small_g > big_sm_g && neg_g_am <= best_neg_g_am){
big_sm_g = small_g;
best_neg_g_am = neg_g_am;
winner_set=i;
g[0]=gtmp[0]; g[1]=gtmp[1];
ls[0]= x->x_lsset[i][0]; ls[1]= x->x_lsset[i][1];
if(dim==3){
g[2]=gtmp[2];
ls[2]= x->x_lsset[i][2];
} else {
g[2]=0.0;
ls[2]=0;
}
}
}
gains_modified=0;
for(i=0;i<dim;i++)
if(g[i]<-0.01){
gains_modified=1;
}
if(gains_modified != 1){
if(dim==3)
power=sqrt(g[0]*g[0] + g[1]*g[1] + g[2]*g[2]);
else
power=sqrt(g[0]*g[0] + g[1]*g[1]);
g[0] /= power;
g[1] /= power;
if(dim==3)
g[2] /= power;
final_gs[ls[0]-1] += g[0];
final_gs[ls[1]-1] += g[1];
/* BUG FIX: this was causing negative indices with 2 dimensions so I
* made it only try when using 3 dimensions.
* 2006-08-13 <hans at at.or.at> */
if(dim==3)
final_gs[ls[2]-1] += g[2];
}
}
static void new_spread_dir(t_rvbap *x, float spreaddir[3], float vscartdir[3], float spread_base[3])
// subroutine for spreading
{
float beta,m_gamma;
float a,b;
float pi = 3.1415927;
float power;
m_gamma = acos(vscartdir[0] * spread_base[0] +
vscartdir[1] * spread_base[1] +
vscartdir[2] * spread_base[2])/pi*180;
if(fabs(m_gamma) < 1){
angle_to_cart(x->x_azi+90, 0, spread_base);
m_gamma = acos(vscartdir[0] * spread_base[0] +
vscartdir[1] * spread_base[1] +
vscartdir[2] * spread_base[2])/pi*180;
}
beta = 180 - m_gamma;
b=sin(x->x_spread * pi / 180) / sin(beta * pi / 180);
a=sin((180- x->x_spread - beta) * pi / 180) / sin (beta * pi / 180);
spreaddir[0] = a * vscartdir[0] + b * spread_base[0];
spreaddir[1] = a * vscartdir[1] + b * spread_base[1];
spreaddir[2] = a * vscartdir[2] + b * spread_base[2];
power=sqrt(spreaddir[0]*spreaddir[0] + spreaddir[1]*spreaddir[1]
+ spreaddir[2]*spreaddir[2]);
spreaddir[0] /= power;
spreaddir[1] /= power;
spreaddir[2] /= power;
}
static void new_spread_base(t_rvbap *x, float spreaddir[3], float vscartdir[3])
// subroutine for spreading
{
float d;
float pi = 3.1415927;
float power;
d = cos(x->x_spread/180*pi);
x->x_spread_base[0] = spreaddir[0] - d * vscartdir[0];
x->x_spread_base[1] = spreaddir[1] - d * vscartdir[1];
x->x_spread_base[2] = spreaddir[2] - d * vscartdir[2];
power=sqrt(x->x_spread_base[0]*x->x_spread_base[0] + x->x_spread_base[1]*x->x_spread_base[1]
+ x->x_spread_base[2]*x->x_spread_base[2]);
x->x_spread_base[0] /= power;
x->x_spread_base[1] /= power;
x->x_spread_base[2] /= power;
}
static void spread_it(t_rvbap *x, float *final_gs)
// apply the sound signal to multiple panning directions
// that causes some spreading.
// See theory in paper V. Pulkki "Uniform spreading of amplitude panned
// virtual sources" in WASPAA 99
{
float vscartdir[3];
float spreaddir[16][3];
float spreadbase[16][3];
long i, spreaddirnum;
float power;
if(x->x_dimension == 3){
spreaddirnum=16;
angle_to_cart(x->x_azi,x->x_ele,vscartdir);
new_spread_dir(x, spreaddir[0], vscartdir, x->x_spread_base);
new_spread_base(x, spreaddir[0], vscartdir);
cross_prod(x->x_spread_base, vscartdir, spreadbase[1]); // four orthogonal dirs
cross_prod(spreadbase[1], vscartdir, spreadbase[2]);
cross_prod(spreadbase[2], vscartdir, spreadbase[3]);
// four between them
for(i=0;i<3;i++) spreadbase[4][i] = (x->x_spread_base[i] + spreadbase[1][i]) / 2.0;
for(i=0;i<3;i++) spreadbase[5][i] = (spreadbase[1][i] + spreadbase[2][i]) / 2.0;
for(i=0;i<3;i++) spreadbase[6][i] = (spreadbase[2][i] + spreadbase[3][i]) / 2.0;
for(i=0;i<3;i++) spreadbase[7][i] = (spreadbase[3][i] + x->x_spread_base[i]) / 2.0;
// four at half spreadangle
for(i=0;i<3;i++) spreadbase[8][i] = (vscartdir[i] + x->x_spread_base[i]) / 2.0;
for(i=0;i<3;i++) spreadbase[9][i] = (vscartdir[i] + spreadbase[1][i]) / 2.0;
for(i=0;i<3;i++) spreadbase[10][i] = (vscartdir[i] + spreadbase[2][i]) / 2.0;
for(i=0;i<3;i++) spreadbase[11][i] = (vscartdir[i] + spreadbase[3][i]) / 2.0;
// four at quarter spreadangle
for(i=0;i<3;i++) spreadbase[12][i] = (vscartdir[i] + spreadbase[8][i]) / 2.0;
for(i=0;i<3;i++) spreadbase[13][i] = (vscartdir[i] + spreadbase[9][i]) / 2.0;
for(i=0;i<3;i++) spreadbase[14][i] = (vscartdir[i] + spreadbase[10][i]) / 2.0;
for(i=0;i<3;i++) spreadbase[15][i] = (vscartdir[i] + spreadbase[11][i]) / 2.0;
additive_vbap(final_gs,spreaddir[0],x);
for(i=1;i<spreaddirnum;i++){
new_spread_dir(x, spreaddir[i], vscartdir, spreadbase[i]);
additive_vbap(final_gs,spreaddir[i],x);
}
} else if (x->x_dimension == 2) {
spreaddirnum=6;
angle_to_cart(x->x_azi - x->x_spread, 0, spreaddir[0]);
angle_to_cart(x->x_azi - x->x_spread/2, 0, spreaddir[1]);
angle_to_cart(x->x_azi - x->x_spread/4, 0, spreaddir[2]);
angle_to_cart(x->x_azi + x->x_spread/4, 0, spreaddir[3]);
angle_to_cart(x->x_azi + x->x_spread/2, 0, spreaddir[4]);
angle_to_cart(x->x_azi + x->x_spread, 0, spreaddir[5]);
for(i=0;i<spreaddirnum;i++)
additive_vbap(final_gs,spreaddir[i],x);
} else
return;
if(x->x_spread > 70)
for(i=0;i<x->x_ls_amount;i++){
final_gs[i] += (x->x_spread - 70) / 30.0 * (x->x_spread - 70) / 30.0 * 10.0;
}
for(i=0,power=0.0;i<x->x_ls_amount;i++){
power += final_gs[i] * final_gs[i];
}
power = sqrt(power);
for(i=0;i<x->x_ls_amount;i++){
final_gs[i] /= power;
}
}
static void equal_reverb(t_rvbap *x, float *final_gs)
// calculate constant reverb gains for equally distributed
// reverb levels
// this is achieved by calculating gains for a sound source
// that is everywhere, i.e. present in all directions
{
float vscartdir[3];
float spreaddir[16][3];
float spreadbase[16][3];
long i, spreaddirnum;
float power;
if(x->x_dimension == 3){
spreaddirnum=5;
// horizontal plane
angle_to_cart(90, 0, spreaddir[0]);
angle_to_cart(180, 0, spreaddir[1]);
angle_to_cart(270, 0, spreaddir[2]);
// above, below
angle_to_cart(0, 90, spreaddir[3]);
angle_to_cart(0, -90, spreaddir[4]);
for(i=1;i<spreaddirnum;i++){
additive_vbap(x->x_reverb_gs,spreaddir[i],x);
}
} else if (x->x_dimension == 2) {
// for 2-D we claculate virtual sources
// every 45 degrees in a horizontal plane
spreaddirnum=7;
angle_to_cart(90, 0, spreaddir[0]);
angle_to_cart(180, 0, spreaddir[1]);
angle_to_cart(270, 0, spreaddir[2]);
angle_to_cart(45, 0, spreaddir[3]);
angle_to_cart(135, 0, spreaddir[4]);
angle_to_cart(225, 0, spreaddir[5]);
angle_to_cart(315, 0, spreaddir[6]);
for(i=0;i<spreaddirnum;i++)
additive_vbap(x->x_reverb_gs,spreaddir[i],x);
} else
return;
for(i=0,power=0.0;i<x->x_ls_amount;i++){
power += x->x_reverb_gs[i] * x->x_reverb_gs[i];
}
power = sqrt(power);
for(i=0;i<x->x_ls_amount;i++){
final_gs[i] /= power;
}
}
static void rvbap_bang(t_rvbap *x)
// top level, vbap gains are calculated and outputted
{
t_atom at[MAX_LS_AMOUNT];
float g[3];
long ls[3];
long i;
float *final_gs, overdist, oversqrtdist;
final_gs = (float *) getbytes(x->x_ls_amount * sizeof(float));
if(x->x_lsset_available ==1){
vbap(g, ls, x);
for(i=0;i<x->x_ls_amount;i++)
final_gs[i]=0.0;
for(i=0;i<x->x_dimension;i++){
final_gs[ls[i]-1]=g[i];
}
if(x->x_spread != 0){
spread_it(x,final_gs);
}
overdist = 1 / x->x_dist;
oversqrtdist = 1 / sqrt(x->x_dist);
// build output for every loudspeaker
for(i=0;i<x->x_ls_amount;i++)
{
// first, we output the gains for the direct (unreverberated) signals
// these just decrease as the distance increases
#ifdef MAXMSP
SETLONG(&at[0], i);
SETFLOAT(&at[1], (final_gs[i] / x->x_dist));
outlet_list(x->x_outlet0, NULL, 2, at);
#endif
#ifdef PD
SETFLOAT(&at[0], i);
SETFLOAT(&at[1], (final_gs[i] / x->x_dist));
outlet_list(x->x_outlet0, gensym("list"), 2, at);
#endif
// second, we output the gains for the reverberated signals
// these are made up of a global (all speakers) and a local part
#ifdef MAXMSP
SETLONG(&at[0], i+x->x_ls_amount); // direct signals come first in matrix~
SETFLOAT(&at[1], (((oversqrtdist / x->x_dist) * x->x_reverb_gs[i]) + (oversqrtdist * (1 - overdist) * final_gs[i])));
outlet_list(x->x_outlet0, NULL, 2, at);
#endif
#ifdef PD
SETFLOAT(&at[0], (i+x->x_ls_amount)); // direct signals come first in matrix~
SETFLOAT(&at[1], (((oversqrtdist / x->x_dist) * x->x_reverb_gs[i]) + (oversqrtdist * (1 - overdist) * final_gs[i])));
outlet_list(x->x_outlet0, gensym("list"), 2, at);
#endif
}
#ifdef MAXMSP
outlet_int(x->x_outlet1, x->x_azi);
outlet_int(x->x_outlet2, x->x_ele);
outlet_int(x->x_outlet3, x->x_spread);
outlet_float(x->x_outlet4, (double)x->x_dist);
#endif
#ifdef PD
outlet_float(x->x_outlet1, x->x_azi);
outlet_float(x->x_outlet2, x->x_ele);
outlet_float(x->x_outlet3, x->x_spread);
outlet_float(x->x_outlet4, x->x_dist);
#endif
}
else
post("rvbap: Configure loudspeakers first!");
freebytes(final_gs, x->x_ls_amount * sizeof(float)); // bug fix added 9/00
}
/*--------------------------------------------------------------------------*/
static void rvbap_matrix(t_rvbap *x, t_symbol *s, int ac, t_atom *av)
// read in loudspeaker matrices
// and calculate the gains for the equally distributed
// reverb signal part (i.e. global reverb)
{
long counter=0;
long datapointer=0;
long setpointer=0;
long i;
long deb=0;
long azi = x->x_azi, ele = x->x_ele; // store original values
float g[3];
long ls[3];
if(ac>0)
#ifdef MAXMSP
if(av[datapointer].a_type == A_LONG){
x->x_dimension = av[datapointer++].a_w.w_long;
x->x_lsset_available=1;
} else
#endif
if(av[datapointer].a_type == A_FLOAT){
x->x_dimension = (long) av[datapointer++].a_w.w_float;
x->x_lsset_available=1;
} else {
post("Error in loudspeaker data!");
x->x_lsset_available=0;
return;
}
//post("%d",deb++);
if(ac>1)
#ifdef MAXMSP
if(av[datapointer].a_type == A_LONG)
x->x_ls_amount = av[datapointer++].a_w.w_long;
else
#endif
if(av[datapointer].a_type == A_FLOAT)
x->x_ls_amount = (long) av[datapointer++].a_w.w_float;
else {
post("rvbap: Error in loudspeaker data!");
x->x_lsset_available=0;
return;
}
else
x->x_lsset_available=0;
if(x->x_dimension == 3)
counter = (ac - 2) / ((x->x_dimension * x->x_dimension*2) + x->x_dimension);
if(x->x_dimension == 2)
counter = (ac - 2) / ((x->x_dimension * x->x_dimension) + x->x_dimension);
x->x_lsset_amount=counter;
if(counter<=0) {
post("rvbap: Error in loudspeaker data!");
x->x_lsset_available=0;
return;
}
while(counter-- > 0){
for(i=0; i < x->x_dimension; i++){
#ifdef MAXMSP
if(av[datapointer].a_type == A_LONG)
#endif
#ifdef PD
if(av[datapointer].a_type == A_FLOAT)
#endif
{
x->x_lsset[setpointer][i]=(long)av[datapointer++].a_w.w_float;
}
else{
post("rvbap: Error in loudspeaker data!");
x->x_lsset_available=0;
return;
}
}
for(i=0; i < x->x_dimension*x->x_dimension; i++){
if(av[datapointer].a_type == A_FLOAT){
x->x_set_inv_matx[setpointer][i]=av[datapointer++].a_w.w_float;
}
else {
post("rvbap: Error in loudspeaker data!");
x->x_lsset_available=0;
return;
}
}
if(x->x_dimension == 3){
for(i=0; i < x->x_dimension*x->x_dimension; i++){
if(av[datapointer].a_type == A_FLOAT){
x->x_set_matx[setpointer][i]=av[datapointer++].a_w.w_float;
}
else {
post("rvbap: Error in loudspeaker data!");
x->x_lsset_available=0;
return;
}
}
}
setpointer++;
}
// now configure static reverb correction values...
x->x_azi = x->x_ele = 0;
vbap(g,ls, x);
for(i=0;i<x->x_ls_amount;i++){
x->x_reverb_gs[i]=0.0;
}
for(i=0;i<x->x_dimension;i++){
x->x_reverb_gs[ls[i]-1]=g[i];
// post("reverb gs #%d = %f", i, x->x_reverb_gs[i]);
}
equal_reverb(x,x->x_reverb_gs);
/* for(i=0; i<x->x_ls_amount; i++) // do this for every speaker
{
post("reverb gs #%d = %f", i, x->x_reverb_gs[i]);
} */
post("rvbap: Loudspeaker setup configured!");
x->x_azi = azi; // restore original panning directions
x->x_ele = ele;
}
#ifdef MAXMSP
static void rvbap_in1(t_rvbap *x, long n) /* x = the instance of the object, n = the int received in the right inlet */
// panning angle azimuth
{
x->x_azi = n; /* store n in a global variable */
}
static void rvbap_in2(t_rvbap *x, long n) /* x = the instance of the object, n = the int received in the right inlet */
// panning angle elevation
{
x->x_ele = n; /* store n in a global variable */
}
/*--------------------------------------------------------------------------*/
static void rvbap_in3(t_rvbap *x, long n) /* x = the instance of the object, n = the int received in the right inlet */
// spread amount
{
if (n<0) n = 0;
if (n>100) n = 100;
x->x_spread = n; /* store n in a global variable */
}
/*--------------------------------------------------------------------------*/
static void rvbap_in4(t_rvbap *x, long n) /* x = the instance of the object, n = the int received in the right inlet */
// distance
{
if (n<1) n = 1;
x->x_dist = (float)n; /* store n in a global variable */
}
static void rvbap_ft1(t_rvbap *x, double n) /* x = the instance of the object, n = the int received in the right inlet */
// panning angle azimuth
{
x->x_azi = (long) n; /* store n in a global variable */
}
static void rvbap_ft2(t_rvbap *x, double n) /* x = the instance of the object, n = the int received in the right inlet */
// panning angle elevation
{
x->x_ele = (long) n; /* store n in a global variable */
}
/*--------------------------------------------------------------------------*/
static void rvbap_ft3(t_rvbap *x, double n) /* x = the instance of the object, n = the int received in the right inlet */
// spreading
{
if (n<0.0) n = 0.0;
if (n>100.0) n = 100.0;
x->x_spread = (long) n; /* store n in a global variable */
}
/*--------------------------------------------------------------------------*/
static void rvbap_ft4(t_rvbap *x, double n) /* x = the instance of the object, n = the int received in the right inlet */
// distance
{
if (n<1.0) n = 1.0;
x->x_dist = (float)n; /* store n in a global variable */
}
#endif
static void *rvbap_new(t_symbol *s, int ac, t_atom *av)
/* create new instance of object... MUST send it an int even if you do nothing with this int!! */
{
t_rvbap *x;
#ifdef MAXMSP
x = (t_rvbap *)newobject(rvbap_class);
floatin(x,4); /* takes the distance */
intin(x,3);
intin(x,2); /* create a second (int) inlet... remember right-to-left ordering in Max */
intin(x,1); /* create a second (int) inlet... remember right-to-left ordering in Max */
x->x_outlet4 = floatout(x); /* distance */
x->x_outlet3 = intout(x);
x->x_outlet2 = intout(x); /* create an (int) outlet - rightmost outlet first... */
x->x_outlet1 = intout(x); /* create an (int) outlet */
x->x_outlet0 = listout(x); /* create a (list) outlet */
#endif
#ifdef PD
x = (t_rvbap *)pd_new(rvbap_class);
floatinlet_new(&x->x_ob, &x->x_azi);
floatinlet_new(&x->x_ob, &x->x_ele);
floatinlet_new(&x->x_ob, &x->x_spread);
floatinlet_new(&x->x_ob, &x->x_dist);
x->x_outlet0 = outlet_new(&x->x_ob, gensym("list"));
x->x_outlet1 = outlet_new(&x->x_ob, gensym("float"));
x->x_outlet2 = outlet_new(&x->x_ob, gensym("float"));
x->x_outlet3 = outlet_new(&x->x_ob, gensym("float"));
x->x_outlet4 = outlet_new(&x->x_ob, gensym("float"));
#endif
x->x_azi = 0;
x->x_ele = 0;
x->x_dist = 1.0;
x->x_spread_base[0] = 0.0;
x->x_spread_base[1] = 1.0;
x->x_spread_base[2] = 0.0;
x->x_spread = 0;
x->x_lsset_available =0;
if (ac>0) {
#ifdef MAXMSP
if (av[0].a_type == A_LONG)
x->x_azi = av[0].a_w.w_long;
else
#endif
if (av[0].a_type == A_FLOAT)
x->x_azi = av[0].a_w.w_float;
}
if (ac>1) {
#ifdef MAXMSP
if (av[1].a_type == A_LONG)
x->x_ele = av[1].a_w.w_long;
else
#endif
if (av[1].a_type == A_FLOAT)
x->x_ele = av[1].a_w.w_float;
}
if (ac>2) {
#ifdef MAXMSP
if (av[2].a_type == A_LONG)
x->x_dist = (float)av[2].a_w.w_long;
else
#endif
if (av[2].a_type == A_FLOAT)
x->x_dist = av[2].a_w.w_float;
}
return(x); /* return a reference to the object instance */
}
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