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
|
/*
* ZamGrains Granular Delay
* Copyright (C) 2018 Damien Zammit <damien@zamaudio.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.
*/
#ifndef ZAMGRAINSPLUGIN_HPP_INCLUDED
#define ZAMGRAINSPLUGIN_HPP_INCLUDED
#include "DistrhoPlugin.hpp"
// 1 second of delay at 192kHz
#define MAX_DELAY 192000
START_NAMESPACE_DISTRHO
// -----------------------------------------------------------------------
class ZamGrainsPlugin : public Plugin
{
public:
enum Parameters
{
paramGain = 0,
paramGrains,
paramGrainspeed,
paramPlayspeed,
paramDelaytime,
paramFreeze,
paramGrainpos,
paramPlaypos,
paramFinalpos,
paramCount
};
ZamGrainsPlugin();
protected:
// -------------------------------------------------------------------
// Information
const char* getLabel() const noexcept override
{
return "ZamGrains";
}
const char* getDescription() const noexcept override
{
return "A granular delay plugin";
}
const char* getMaker() const noexcept override
{
return "Damien Zammit";
}
const char* getHomePage() const noexcept override
{
return "http://www.zamaudio.com";
}
const char* getLicense() const noexcept override
{
return "GPL v2+";
}
uint32_t getVersion() const noexcept override
{
return d_version(3, 10, 0);
}
int64_t getUniqueId() const noexcept override
{
return d_cconst('Z', 'M', 'G', 'R');
}
// -------------------------------------------------------------------
// Init
void initParameter(uint32_t index, Parameter& parameter) override;
void initProgramName(uint32_t index, String& programName) override;
// -------------------------------------------------------------------
// Internal data
float getParameterValue(uint32_t index) const override;
void setParameterValue(uint32_t index, float value) override;
void loadProgram(uint32_t index);
// -------------------------------------------------------------------
// Process
static inline float
sanitize_denormal(float v) {
if(!std::isnormal(v))
return 0.f;
return v;
}
static inline float
from_dB(float gdb) {
return (exp(gdb/20.f*log(10.f)));
}
static inline float
to_dB(float g) {
return (20.f*log10(g));
}
void activate() override;
void run(const float** inputs, float** outputs, uint32_t frames) override;
float sample_and_hold(int ctrl, float input, int *state);
float hanning(int pos, int windowsize);
// -------------------------------------------------------------------
private:
int currgrains, zidx, zidx2, zidxold, zidx2old, samphold, samphold2;
float freeze, grains, grainspeed, playspeed, delaytime, gain, delaytimeout, playpos, grainpos, finalpos;
float delaytimeold, grainsold, grainspeedold;
float z[MAX_DELAY];
unsigned int posz;
unsigned int posphasor;
};
// -----------------------------------------------------------------------
END_NAMESPACE_DISTRHO
#endif // ZAMGRAINS_HPP_INCLUDED
|
