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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/* Copyright (c) 2002-2003 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#include <string.h>
#include "m_pd.h"
#include "shared.h"
#include "common/loud.h"
#include "common/vefl.h"
#include "sickle/sic.h"
#define CYCLE_TABSIZE 512
typedef struct _cycle
{
t_sic x_sic;
double x_phase;
double x_conv;
t_symbol *x_name;
int x_offset;
t_float *x_table;
t_float *x_costable;
t_float x_usertable[CYCLE_TABSIZE + 1];
} t_cycle;
static t_class *cycle_class;
static void cycle_gettable(t_cycle *x)
{
x->x_table = 0;
if (x->x_name)
{
int tabsize = 0;
t_float *table = vefl_get(x->x_name, &tabsize, 1, (t_pd *)x);
/* CHECKED buffer is copied */
if (table)
{
int indx = x->x_offset + CYCLE_TABSIZE;
t_float *ptr = x->x_usertable + CYCLE_TABSIZE;
if (indx == tabsize)
{
*ptr-- = *table;
indx--;
}
if (indx < tabsize)
{
table += indx;
indx -= x->x_offset;
while (indx--) *ptr-- = *table--;
x->x_table = x->x_usertable;
}
/* CHECKED else no complaint */
}
}
else x->x_table = x->x_costable;
if (!x->x_table)
{
/* CHECKED (incompatible) cycle~ is disabled -- garbage is output */
x->x_table = x->x_usertable;
memset(x->x_table, 0, (CYCLE_TABSIZE + 1) * sizeof(*x->x_table));
}
}
static void cycle_set(t_cycle *x, t_symbol *s, t_floatarg f)
{
if (s && s != &s_)
{
x->x_name = s;
if ((x->x_offset = (int)f) < 0)
x->x_offset = 0;
}
else x->x_name = 0;
cycle_gettable(x);
}
static t_int *cycle_perform(t_int *w)
{
t_cycle *x = (t_cycle *)(w[1]);
int nblock = (int)(w[2]);
t_float *in1 = (t_float *)(w[3]);
t_float *in2 = (t_float *)(w[4]);
t_float *out = (t_float *)(w[5]);
t_float *tab = x->x_table;
t_float *addr, f1, f2, frac;
double dphase = x->x_phase + SHARED_UNITBIT32;
double conv = x->x_conv;
int32 normhipart;
t_shared_wrappy wrappy;
wrappy.w_d = SHARED_UNITBIT32;
normhipart = wrappy.w_i[SHARED_HIOFFSET];
wrappy.w_d = dphase + CYCLE_TABSIZE * *in2++; /* CHECKED */
dphase += *in1++ * conv;
addr = tab + (wrappy.w_i[SHARED_HIOFFSET] & (CYCLE_TABSIZE-1));
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
frac = wrappy.w_d - SHARED_UNITBIT32;
while (--nblock)
{
wrappy.w_d = dphase + CYCLE_TABSIZE * *in2++; /* CHECKED */
dphase += *in1++ * conv;
f1 = addr[0];
f2 = addr[1];
addr = tab + (wrappy.w_i[SHARED_HIOFFSET] & (CYCLE_TABSIZE-1));
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
*out++ = f1 + frac * (f2 - f1);
frac = wrappy.w_d - SHARED_UNITBIT32;
}
f1 = addr[0];
f2 = addr[1];
*out++ = f1 + frac * (f2 - f1);
wrappy.w_d = SHARED_UNITBIT32 * CYCLE_TABSIZE;
normhipart = wrappy.w_i[SHARED_HIOFFSET];
wrappy.w_d = dphase + (SHARED_UNITBIT32 * CYCLE_TABSIZE - SHARED_UNITBIT32);
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
x->x_phase = wrappy.w_d - (SHARED_UNITBIT32 * CYCLE_TABSIZE);
return (w + 6);
}
static void cycle_dsp(t_cycle *x, t_signal **sp)
{
cycle_gettable(x);
x->x_conv = CYCLE_TABSIZE / sp[0]->s_sr;
dsp_add(cycle_perform, 5, x, sp[0]->s_n,
sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec);
}
static void *cycle_new(t_symbol *s, int ac, t_atom *av)
{
t_cycle *x = (t_cycle *)pd_new(cycle_class);
int i = (ac && av->a_type == A_FLOAT ? 1 : 0);
int tabsize = CYCLE_TABSIZE;
x->x_costable = sic_makecostable(&tabsize);
if (tabsize != CYCLE_TABSIZE)
{
bug("cycle_new");
pd_free((t_pd *)x);
return (0);
}
if (ac && av->a_type == A_FLOAT)
{
sic_inlet((t_sic *)x, 0, 0, 0, ac, av);
ac--, av++;
}
sic_newinlet((t_sic *)x, 0);
outlet_new((t_object *)x, &s_signal);
x->x_offset = 0;
if (ac && av->a_type == A_SYMBOL)
{
x->x_name = av->a_w.w_symbol;
ac--, av++;
if (ac && av->a_type == A_FLOAT)
if ((x->x_offset = (int)av->a_w.w_float) < 0)
x->x_offset = 0;
}
else x->x_name = 0;
x->x_table = 0;
x->x_phase = 0.;
x->x_conv = 0.;
return (x);
}
void cycle_tilde_setup(void)
{
cycle_class = class_new(gensym("cycle~"),
(t_newmethod)cycle_new, 0,
sizeof(t_cycle), 0, A_GIMME, 0);
sic_setup(cycle_class, cycle_dsp, SIC_FLOATTOSIGNAL);
class_addmethod(cycle_class, (t_method)cycle_set,
gensym("set"), A_DEFSYMBOL, A_DEFFLOAT, 0);
}
|
