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Diffstat (limited to 'apps/plugins/pdbox/PDa/intern/noise~.c')
-rw-r--r--apps/plugins/pdbox/PDa/intern/noise~.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/apps/plugins/pdbox/PDa/intern/noise~.c b/apps/plugins/pdbox/PDa/intern/noise~.c
new file mode 100644
index 0000000000..2f61b9d395
--- /dev/null
+++ b/apps/plugins/pdbox/PDa/intern/noise~.c
@@ -0,0 +1,110 @@
1#include <m_pd.h>
2#include <m_fixed.h>
3
4
5static t_class *noise_class;
6
7typedef struct _noise
8{
9 t_object x_obj;
10 int x_val;
11} t_noise;
12
13static void *noise_new(void)
14{
15 t_noise *x = (t_noise *)pd_new(noise_class);
16 static int init = 307;
17 x->x_val = (init *= 1319);
18 outlet_new(&x->x_obj, gensym("signal"));
19 return (x);
20}
21
22static t_int *noise_perform(t_int *w)
23{
24 t_sample *out = (t_sample *)(w[1]);
25 int *vp = (int *)(w[2]);
26 int n = (int)(w[3]);
27 int val = *vp;
28 while (n--)
29 {
30#ifndef FIXEDPOINT
31 *out++ = ((t_sample)((val & 0x7fffffff) - 0x40000000)) *
32 (t_sample)(1.0 / 0x40000000);
33#else
34 *out++=val>>(32-fix1);
35#endif
36 val = val * 435898247 + 382842987;
37
38 }
39 *vp = val;
40 return (w+4);
41}
42
43static void noise_dsp(t_noise *x, t_signal **sp)
44{
45 dsp_add(noise_perform, 3, sp[0]->s_vec, &x->x_val, sp[0]->s_n);
46}
47
48void noise_tilde_setup(void)
49{
50 noise_class = class_new(gensym("noise~"), (t_newmethod)noise_new, 0,
51 sizeof(t_noise), 0, 0);
52 class_addmethod(noise_class, (t_method)noise_dsp, gensym("dsp"), 0);
53}
54
55
56#include <m_pd.h>
57#include <m_fixed.h>
58
59
60static t_class *noise_class;
61
62typedef struct _noise
63{
64 t_object x_obj;
65 int x_val;
66} t_noise;
67
68static void *noise_new(void)
69{
70 t_noise *x = (t_noise *)pd_new(noise_class);
71 static int init = 307;
72 x->x_val = (init *= 1319);
73 outlet_new(&x->x_obj, gensym("signal"));
74 return (x);
75}
76
77static t_int *noise_perform(t_int *w)
78{
79 t_sample *out = (t_sample *)(w[1]);
80 int *vp = (int *)(w[2]);
81 int n = (int)(w[3]);
82 int val = *vp;
83 while (n--)
84 {
85#ifndef FIXEDPOINT
86 *out++ = ((t_sample)((val & 0x7fffffff) - 0x40000000)) *
87 (t_sample)(1.0 / 0x40000000);
88#else
89 *out++=val>>(32-fix1);
90#endif
91 val = val * 435898247 + 382842987;
92
93 }
94 *vp = val;
95 return (w+4);
96}
97
98static void noise_dsp(t_noise *x, t_signal **sp)
99{
100 dsp_add(noise_perform, 3, sp[0]->s_vec, &x->x_val, sp[0]->s_n);
101}
102
103void noise_tilde_setup(void)
104{
105 noise_class = class_new(gensym("noise~"), (t_newmethod)noise_new, 0,
106 sizeof(t_noise), 0, 0);
107 class_addmethod(noise_class, (t_method)noise_dsp, gensym("dsp"), 0);
108}
109
110