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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
#include "m_pd.h"
#include <math.h>
#define UNITBIT32 1572864. /* 3*2^19; bit 32 has place value 1 */
/* machine-dependent definitions. These ifdefs really
should have been by CPU type and not by operating system! */
#ifdef IRIX
/* big-endian. Most significant byte is at low address in memory */
#define HIOFFSET 0 /* word offset to find MSB */
#define LOWOFFSET 1 /* word offset to find LSB */
#define int32 long /* a data type that has 32 bits */
#endif /* IRIX */
#ifdef MSW
/* little-endian; most significant byte is at highest address */
#define HIOFFSET 1
#define LOWOFFSET 0
#define int32 long
#endif
#if defined(__FreeBSD__) || defined(__APPLE__)
#include <machine/endian.h>
#endif
#ifdef __linux__
#include <endian.h>
#endif
#if defined(__unix__) || defined(__APPLE__)
#if !defined(BYTE_ORDER) || !defined(LITTLE_ENDIAN)
#error No byte order defined
#endif
#if BYTE_ORDER == LITTLE_ENDIAN
#define HIOFFSET 1
#define LOWOFFSET 0
#else
#define HIOFFSET 0 /* word offset to find MSB */
#define LOWOFFSET 1 /* word offset to find LSB */
#endif /* __BYTE_ORDER */
#include <sys/types.h>
#define int32 int32_t
#endif /* __unix__ or __APPLE__*/
union tabfudge
{
double tf_d;
int32 tf_i[2];
};
/* -------------------------- phasorshot~ ------------------------------ */
static t_class *phasorshot_class, *scalarphasorshot_class;
#if 1 /* in the style of R. Hoeldrich (ICMC 1995 Banff) */
typedef struct _phasorshot
{
t_object x_obj;
double x_phase;
float x_conv;
float x_f; /* scalar frequency */
float loop;
t_outlet *x_outlet1; /* bang out for high thresh */
t_outlet *x_outlet2; /* bang out for low thresh */
t_clock *x_clock; /* wakeup for message output */
//int previousState;
int state;
} t_phasorshot;
void phasorshot_tick(t_phasorshot *x)
{
if (x->state == 1) {
outlet_bang(x->x_outlet2);
} else if ( x->state == 0 ) {
outlet_bang(x->x_outlet1);
}
//post("bang");
}
t_int *phasorshot_perform(t_int *w)
{
t_phasorshot *x = (t_phasorshot *)(w[1]);
t_float *in = (t_float *)(w[2]);
t_float *out = (t_float *)(w[3]);
int n = (int)(w[4]);
double dphase = x->x_phase + UNITBIT32;
union tabfudge tf;
int normhipart;
float conv = x->x_conv;
tf.tf_d = UNITBIT32;
normhipart = tf.tf_i[HIOFFSET];
tf.tf_d = dphase;
//clock_delay(x->x_clock, 0L);
while (n--)
{
// BANG when bounds are reached
if ( tf.tf_d >= UNITBIT32 + 1 ) {
tf.tf_d = UNITBIT32 + 1;
if (x->state != 1) clock_delay(x->x_clock, 0L);
x->state = 1;
} else if ( tf.tf_d <= UNITBIT32 ) {
tf.tf_d = UNITBIT32;
if (x->state != 0) clock_delay(x->x_clock, 0L);
x->state = 0;
} else {
x->state = -1;
}
//wrap
if (x->loop) tf.tf_i[HIOFFSET] = normhipart;
dphase += *in++ * conv; //increment
//dphase = UNITBIT32 + 1; //set to one
*out++ = tf.tf_d - UNITBIT32;
tf.tf_d = dphase;
}
//if (x->loop) tf.tf_i[HIOFFSET] = normhipart; //wrap
//wrap
if (x->loop) {
tf.tf_i[HIOFFSET] = normhipart;
//x->state = -1;
} else {
if ( tf.tf_d > UNITBIT32 + 1 ) {
tf.tf_d = UNITBIT32 + 1;
} else if ( tf.tf_d < UNITBIT32 ) {
tf.tf_d = UNITBIT32;
}
}
x->x_phase = tf.tf_d - UNITBIT32;
return (w+5);
}
void phasorshot_dsp(t_phasorshot *x, t_signal **sp)
{
x->x_conv = 1./sp[0]->s_sr;
dsp_add(phasorshot_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
}
void phasorshot_ft1(t_phasorshot *x, t_float f)
{
if (f < 0) f = 0;
if (f > 1) f = 1;
x->x_phase = f;
if ( f == 1) x->state = 1;
if ( f == 0) x->state = 0;
}
void phasorshot_loop(t_phasorshot *x, t_float f)
{
x->loop = f;
//if (!f) x->state = -1;
}
void *phasorshot_new(t_symbol *s,int argc,t_atom* argv)
{
t_phasorshot *x = (t_phasorshot *)pd_new(phasorshot_class);
x->x_f = 0;
if (argc) x->x_f = atom_getfloat(argv++),argc--;
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
x->x_phase = 0;
x->x_conv = 0;
outlet_new(&x->x_obj, gensym("signal"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("loop"));
x->loop = 0;
if (argc) x->loop = atom_getfloat(argv++),argc--;
x->state = 0;
x->x_outlet1 = outlet_new(&x->x_obj, &s_bang);
x->x_outlet2 = outlet_new(&x->x_obj, &s_bang);
x->x_clock = clock_new(x, (t_method)phasorshot_tick);
return (x);
}
void phasorshot_free(t_phasorshot *x)
{
clock_free(x->x_clock);
}
void phasorshot_tilde_setup(void)
{
phasorshot_class = class_new(gensym("phasorshot~"), (t_newmethod)phasorshot_new, (t_method)phasorshot_free,
sizeof(t_phasorshot), 0,A_GIMME,0);
CLASS_MAINSIGNALIN(phasorshot_class, t_phasorshot, x_f);
class_addmethod(phasorshot_class, (t_method)phasorshot_dsp, gensym("dsp"), 0);
class_addmethod(phasorshot_class, (t_method)phasorshot_ft1,
gensym("ft1"), A_FLOAT, 0);
class_addmethod(phasorshot_class, (t_method)phasorshot_loop,
gensym("loop"), A_FLOAT, 0);
}
#endif /* Hoeldrich version */
|
