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
|
/* sc4pd
LPZ1~
Copyright (c) 2004 Tim Blechmann.
This code is derived from:
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Based on:
PureData by Miller Puckette and others.
http://www.crca.ucsd.edu/~msp/software.html
FLEXT by Thomas Grill
http://www.parasitaere-kapazitaeten.net/ext
SuperCollider by James McCartney
http://www.audiosynth.com
Coded while listening to: William Parker: Compassion Seizes Bed-Stuy
*/
#include "sc4pd.hpp"
/* ------------------------ LPZ1~ -------------------------------*/
class LPZ1_ar:
public sc4pd_dsp
{
FLEXT_HEADER(LPZ1_ar,sc4pd_dsp);
public:
LPZ1_ar(int argc, t_atom *argv);
protected:
virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
private:
float m_x1;
};
FLEXT_LIB_DSP_V("LPZ1~",LPZ1_ar);
LPZ1_ar::LPZ1_ar(int argc, t_atom *argv)
{
AddOutSignal();
m_x1=0;
}
void LPZ1_ar::m_signal(int n, t_sample *const *in,
t_sample *const *out)
{
t_sample *nin = *in;
t_sample *nout = *out;
float x0;
float x1 = m_x1;
int t = n >> 2;
for (int i = 0; i!= t;++i)
{
x0 = ZXP(nin);
ZXP(nout) = 0.5f * (x0 + x1);
x1 = ZXP(nin);
ZXP(nout) = 0.5f * (x1 + x0);
x0 = ZXP(nin);
ZXP(nout) = 0.5f * (x0 + x1);
x1 = ZXP(nin);
ZXP(nout) = 0.5f * (x1 + x0);
}
t = n & 3;
for (int i = 0; i!= t;++i)
{
x0 = ZXP(nin);
ZXP(nout) = 0.5f * (x0 + x1);
x1 = x0;
}
m_x1 = x1;
}
/* ------------------------ LPZ1 -------------------------------*/
class LPZ1_kr:
public flext_base
{
FLEXT_HEADER(LPZ1_kr,flext_base);
public:
LPZ1_kr(int argc, t_atom *argv);
protected:
void m_perform (float f);
private:
float m_x1;
FLEXT_CALLBACK_F(m_perform);
};
FLEXT_LIB_V("LPZ1",LPZ1_kr);
LPZ1_kr::LPZ1_kr(int argc, t_atom *argv)
{
FLEXT_ADDMETHOD(0,m_perform);
AddOutFloat();
m_x1=0;
}
void LPZ1_kr::m_perform(float f)
{
ToOutFloat(0,0.5f * (f + m_x1));
m_x1=f;
}
|
