aboutsummaryrefslogtreecommitdiff
path: root/plugins/synthpod_cv2control.c
blob: ec99376f4e8deba59cca919f326fe9a4ba77de7e (plain)
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
/*
 * Copyright (c) 2015-2016 Hanspeter Portner (dev@open-music-kontrollers.ch)
 *
 * This is free software: you can redistribute it and/or modify
 * it under the terms of the Artistic License 2.0 as published by
 * The Perl Foundation.
 *
 * This source 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
 * Artistic License 2.0 for more details.
 *
 * You should have received a copy of the Artistic License 2.0
 * along the source as a COPYING file. If not, obtain it from
 * http://www.perlfoundation.org/artistic_license_2_0.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#include <synthpod_lv2.h>

#include <lv2/lv2plug.in/ns/ext/atom/atom.h>
#include <lv2/lv2plug.in/ns/ext/atom/forge.h>
#include <lv2/lv2plug.in/ns/ext/atom/util.h>
#include <lv2/lv2plug.in/ns/ext/midi/midi.h>

typedef struct _plughandle_t plughandle_t;

#define MAX_PORTS 8

struct _plughandle_t {
	const float *mode;
	const float *cv_in [MAX_PORTS];
	float *output [MAX_PORTS];
};

static LV2_Handle
instantiate(const LV2_Descriptor* descriptor, double rate,
	const char *bundle_path, const LV2_Feature *const *features)
{
	plughandle_t *handle = calloc(1, sizeof(plughandle_t));
	if(!handle)
		return NULL;
	mlock(handle, sizeof(plughandle_t));

	return handle;
}

static void
connect_port(LV2_Handle instance, uint32_t port, void *data)
{
	plughandle_t *handle = instance;

	switch(port)
	{
		case 0:
			handle->mode = (const float *)data;
			break;
		case 1:
		case 2:
		case 3:
		case 4:
		case 5:
		case 6:
		case 7:
		case 8:
			handle->cv_in[port-1] = (const float *)data;
			break;
		case 9:
		case 10:
		case 11:
		case 12:
		case 13:
		case 14:
		case 15:
		case 16:
			handle->output[port-9] = (float *)data;
			break;
		default:
			break;
	}
}

static void
activate(LV2_Handle instance)
{
	//plughandle_t *handle = instance;
	
	// nothing
}

__realtime static void
run(LV2_Handle instance, uint32_t nsamples)
{
	plughandle_t *handle = instance;

	int mode = floor(*handle->mode);

	for(int i=0; i<MAX_PORTS; i++)
	{
		switch(mode)
		{
			case 0:
			{
				float min = 1.f;

				for(uint32_t f=0; f<nsamples; f++)
				{
					const float *val = &handle->cv_in[i][f];
					if(*val < min)
						min = *val;
				}

				*handle->output[i] = min;

				break;
			}
			case 1:
			{
				float sum = 0.f;

				for(uint32_t f=0; f<nsamples; f++)
				{
					const float *val = &handle->cv_in[i][f];
					sum += *val;
				}

				*handle->output[i] = sum / nsamples;

				break;
			}
			case 2:
			{
				float max = 0.f;

				for(uint32_t f=0; f<nsamples; f++)
				{
					const float *val = &handle->cv_in[i][f];
					if(*val > max)
						max = *val;
				}

				*handle->output[i] = max;

				break;
			}
		}
	}
}

static void
deactivate(LV2_Handle instance)
{
	//plughandle_t *handle = instance;

	// nothing
}

static void
cleanup(LV2_Handle instance)
{
	plughandle_t *handle = instance;

	munlock(handle, sizeof(plughandle_t));
	free(handle);
}

static const void*
extension_data(const char* uri)
{
	return NULL;
}

const LV2_Descriptor synthpod_cv2control = {
	.URI						= SYNTHPOD_CV2CONTROL_URI,
	.instantiate		= instantiate,
	.connect_port		= connect_port,
	.activate				= activate,
	.run						= run,
	.deactivate			= deactivate,
	.cleanup				= cleanup,
	.extension_data	= extension_data
};