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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/******************************************************
*
* zexy - implementation file
*
* copyleft (c) IOhannes m zmölnig
*
* 1999:forum::für::umläute:2004
*
* institute of electronic music and acoustics (iem)
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
/* 0109:forum::für::umläute:2000
unpack~ :: convert float-(package)-inputs to signals
*/
/* ---------------------------- unpack~ ----------------------------- */
/* unpack a sequence of float-package to a signal-vector */
#include "zexy.h"
#include <math.h>
static t_class *sigunpack_class;
typedef struct _sigunpack
{
t_object x_obj;
t_float *buffer;
t_float *rp, *wp;
int bufsize;
} t_sigunpack;
static void sigunpack_float(t_sigunpack *x, t_float f)
{
if (x->wp + 1 != x->rp) {
*(x->wp)++ = f;
if (x->wp == x->buffer + x->bufsize) x->wp = x->buffer;
}
}
static void sigunpack_list(t_sigunpack *x, t_symbol *s, int argc, t_atom *argv)
{
t_atom *ap = argv;
int i;
for (i = 0, ap = argv; i < argc; ap++, i++) {
// if (ap->a_type == A_FLOAT) {
if (x->wp + 1 != x->rp) {
*(x->wp)++ = atom_getfloat(ap);
if (x->wp == x->buffer + x->bufsize) x->wp = x->buffer;
}
// }
}
}
static t_int *sigunpack_perform(t_int *w)
{
t_float *out = (t_float *)(w[1]);
t_sigunpack *x = (t_sigunpack *)w[2];
int n = (int)(w[3]);
t_float *buf = x->rp;
int hitchhike = 0;
if ((x->wp >= x->rp) && (x->wp < x->rp+n)) hitchhike=1;
x->rp += n;
if (x->rp == x->buffer + x->bufsize) x->rp = x->buffer;
if (hitchhike) x->wp = x->rp;
while (n--) {
*out++ = *buf;
*buf++ = 0;
}
return (w+4);
}
static void sigunpack_dsp(t_sigunpack *x, t_signal **sp)
{
if (x->bufsize % sp[0]->s_n) {
int newsize = sp[0]->s_n*(1+(int)(x->bufsize/sp[0]->s_n));
freebytes(x->buffer, x->bufsize * sizeof(t_float));
x->buffer = (t_float *)getbytes(newsize * sizeof(t_float));
x->rp = x->wp = x->buffer;
x->bufsize = newsize;
}
dsp_add(sigunpack_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
}
static void *sigunpack_new(t_floatarg f)
{
t_sigunpack *x = (t_sigunpack *)pd_new(sigunpack_class);
int suggestedsize = (int)f;
int bufsize;
if (!suggestedsize) bufsize = 64;
else bufsize = (suggestedsize % 64)?(64*(1+(int)(suggestedsize/64))):suggestedsize;
x->buffer = (t_float *)getbytes(bufsize * sizeof(t_float));
x->bufsize = bufsize;
x->rp = x->wp = x->buffer;
outlet_new(&x->x_obj, gensym("signal"));
return (x);
}
static void sigunpack_help(void)
{
post("unpack~\t:: outputs a sequence of floats as a signal");
}
void unpack_tilde_setup(void)
{
sigunpack_class = class_new(gensym("unpack~"), (t_newmethod)sigunpack_new, 0,
sizeof(t_sigunpack), 0, A_DEFFLOAT, 0);
class_addmethod(sigunpack_class, (t_method)sigunpack_dsp, gensym("dsp"), 0);
class_addfloat(sigunpack_class, (t_method)sigunpack_float);
class_addlist (sigunpack_class, (t_method)sigunpack_list);
class_addmethod(sigunpack_class, (t_method)sigunpack_help, gensym("help"), 0);
class_sethelpsymbol(sigunpack_class, gensym("zexy/unpack~"));
zexy_register("unpack~");
}
void z_unpack__setup(void)
{
unpack_tilde_setup();
}
|
