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
|
#include <m_pd.h>
#include <m_fixed.h>
extern int ugen_getsortno(void);
#define DEFDELVS 64 /* LATER get this from canvas at DSP time */
#ifndef ROCKBOX
static int delread_zero = 0; /* four bytes of zero for delread~, vd~ */
#endif
#include "delay.h"
t_class *sigdelwrite_class;
static void *sigdelwrite_new(t_symbol *s, t_floatarg msec)
{
int nsamps;
t_sigdelwrite *x = (t_sigdelwrite *)pd_new(sigdelwrite_class);
if (!*s->s_name) s = gensym("delwrite~");
pd_bind(&x->x_obj.ob_pd, s);
x->x_sym = s;
nsamps = msec * sys_getsr() * (float)(0.001f);
if (nsamps < 1) nsamps = 1;
nsamps += ((- nsamps) & (SAMPBLK - 1));
nsamps += DEFDELVS;
x->x_cspace.c_n = nsamps;
x->x_cspace.c_vec =
(t_sample *)getbytes((nsamps + XTRASAMPS) * sizeof(float));
x->x_cspace.c_phase = XTRASAMPS;
x->x_sortno = 0;
x->x_vecsize = 0;
x->x_f = 0;
return (x);
}
static t_int *sigdelwrite_perform(t_int *w)
{
t_sample *in = (t_sample *)(w[1]);
t_delwritectl *c = (t_delwritectl *)(w[2]);
int n = (int)(w[3]);
int phase = c->c_phase, nsamps = c->c_n;
t_sample *vp = c->c_vec, *bp = vp + phase, *ep = vp + (c->c_n + XTRASAMPS);
phase += n;
while (n--)
{
t_sample f = *in++;
if (PD_BADFLOAT(f))
f = 0;
*bp++ = f;
if (bp == ep)
{
vp[0] = ep[-4];
vp[1] = ep[-3];
vp[2] = ep[-2];
vp[3] = ep[-1];
bp = vp + XTRASAMPS;
phase -= nsamps;
}
}
c->c_phase = phase;
return (w+4);
}
static void sigdelwrite_dsp(t_sigdelwrite *x, t_signal **sp)
{
dsp_add(sigdelwrite_perform, 3, sp[0]->s_vec, &x->x_cspace, sp[0]->s_n);
x->x_sortno = ugen_getsortno();
sigdelwrite_checkvecsize(x, sp[0]->s_n);
}
static void sigdelwrite_free(t_sigdelwrite *x)
{
pd_unbind(&x->x_obj.ob_pd, x->x_sym);
freebytes(x->x_cspace.c_vec,
(x->x_cspace.c_n + XTRASAMPS) * sizeof(float));
}
void delwrite_tilde_setup(void)
{
sigdelwrite_class = class_new(gensym("delwrite~"),
(t_newmethod)sigdelwrite_new, (t_method)sigdelwrite_free,
sizeof(t_sigdelwrite), 0, A_DEFSYM, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(sigdelwrite_class, t_sigdelwrite, x_f);
class_addmethod(sigdelwrite_class, (t_method)sigdelwrite_dsp,
gensym("dsp"), 0);
}
|
