Newer
Older
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
110
111
112
113
#include "m_pd.h"
#ifdef NT
#include "stdafx.h"
#include <io.h>
#endif
#include <stdlib.h>
#include<time.h>
#include "synapseA~.h"
/* ------------------------ synapseA_tilde~ ----------------------------- */
static t_class *synapseA_tilde_class;
/**
* do an average and see if it is bigger than our threshold
* then check for state change and output accordingly
*/
t_int *synapseA_tilde_perform(t_int *w)
{
float *in = (float *)(w[1]);
t_synapseA_tilde *x = (t_synapseA_tilde *)(w[2]);
int n = (t_int)(w[3]);
t_float buf = 0.;
while (n--)
{
buf += *in++;
}
if ( buf*x->n_inv > x->x_threshold )
{
if( !x->x_state )
{
x->x_state = 1;
outlet_float( x->x_obj.ob_outlet , x->x_state );
outlet_bang( x->x_onbang );
}
}
else
{
if( x->x_state )
{
x->x_state = 0;
outlet_float( x->x_obj.ob_outlet , x->x_state );
outlet_bang( x->x_offbang );
}
}
return (w+4);
}
/**
* set up our dsp perform routine - it takes parameters
* the input channel, the output channels ( left and right),
* the pin object and the number of samples in the array
*/
static void synapseA_tilde_dsp(t_synapseA_tilde *x, t_signal **sp)
{
x->n_inv=1./sp[0]->s_n;
dsp_add(synapseA_tilde_perform, 3,sp[0]->s_vec , x ,sp[0]->s_n);
}
/**
* free up the tilde object - for now we only need
* to get rid of the clock
*/
static void synapseA_tilde_free(t_synapseA_tilde *x)
{
}
static void synapseA_tilde_threshold(t_synapseA_tilde *x, t_float f )
{
if ( f > 0 )
{
x->x_threshold = f;
}
else
{
post( "Threshold must be bigger than 0 - setting to 0");
x->x_threshold = 0;
}
}
/**
* make a new object - set up out internal variables
* and add our inlets and outlets
*/
static void *synapseA_tilde_new(t_floatarg prob , t_floatarg tick)
{
// set up our inlets
t_synapseA_tilde *x = (t_synapseA_tilde *)pd_new(synapseA_tilde_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("threshold"));
outlet_new(&x->x_obj, gensym("float"));
x->x_onbang = outlet_new(&x->x_obj, gensym("bang"));
x->x_offbang = outlet_new(&x->x_obj, gensym("bang"));
return (x);
}
/**
* setup - add our methods and seed the random number generator
*/
void synapseA_tilde_setup(void)
{
synapseA_tilde_class = class_new(gensym("synapseA~"), (t_newmethod) synapseA_tilde_new, (t_method) synapseA_tilde_free,
sizeof(t_synapseA_tilde), 0, A_DEFFLOAT, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN( synapseA_tilde_class, t_synapseA_tilde, x_f);
class_addmethod(synapseA_tilde_class, (t_method) synapseA_tilde_dsp, gensym("dsp"), A_CANT, (t_atomtype)0);
class_addmethod(synapseA_tilde_class, (t_method) synapseA_tilde_threshold, gensym("threshold") , A_DEFFLOAT , (t_atomtype)0 );
}