/usr/lib/lv2/dj_flanger-swh.lv2/plugin.ttl is in swh-lv2 1.0.15+git20151104~repack0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | @prefix : <http://lv2plug.in/ns/lv2core#> .
@prefix swh: <http://plugin.org.uk/swh-plugins/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix swhext: <http://plugin.org.uk/extensions#> .
@prefix pg: <http://lv2plug.in/ns/ext/port-groups#> .
@prefix pprops: <http://lv2plug.in/ns/ext/port-props#> .
swh:djFlanger a :Plugin ;
a :FlangerPlugin ;
doap:name "DJ flanger" ;
doap:maintainer [
foaf:name "Steve Harris";
foaf:homepage <http://plugin.org.uk/> ;
foaf:mbox <mailto:steve@plugin.org.uk> ;
] ;
doap:license <http://usefulinc.com/doap/licenses/gpl> ;
:documentation <http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html#djFlanger> ;
:pluginProperty :hardRtCapable ;
:port [
a :InputPort, :ControlPort ;
:name "LFO sync" ;
:index 0 ;
:symbol "sync" ;
:default 0.0 ;
:portProperty :toggled ;
] ;
:port [
a :InputPort, :ControlPort ;
:name "LFO period (s)" ;
:index 1 ;
:symbol "period" ;
:minimum 0.1 ;
:maximum 32.0 ;
:default 1.0 ;
] ;
:port [
a :InputPort, :ControlPort ;
:name "LFO depth (ms)" ;
:index 2 ;
:symbol "depth" ;
:minimum 1 ;
:maximum 5 ;
:default 4 ;
:default 4 ;
] ;
:port [
a :InputPort, :ControlPort ;
:name "Feedback (%)" ;
:index 3 ;
:symbol "feedback" ;
:minimum -100 ;
:maximum 100 ;
:default 0.0 ;
] ;
:port [
a :InputPort, :AudioPort ;
:name "Input" ;
:index 4 ;
:symbol "input" ;
] ;
:port [
a :OutputPort, :AudioPort ;
:name "Output" ;
:index 5 ;
:symbol "output" ;
] ;
swhext:code """
#include <sys/types.h>
#include "ladspa-util.h"
#define DELAY_TIME 0.005f
""" ;
swhext:callback [
swhext:event "instantiate" ;
swhext:code """
int buffer_size = 2048;
fs = s_rate;
while (buffer_size < fs * DELAY_TIME + 3.0f) {
buffer_size *= 2;
}
buffer = calloc(buffer_size, sizeof(LADSPA_Data));
buffer_mask = buffer_size - 1;
buffer_pos = 0;
x = 0.5f;
y = 0.0f;
last_sync = 0;
""" ;
] ;
swhext:callback [
swhext:event "activate" ;
swhext:code """
memset(buffer, 0, (buffer_mask + 1) * sizeof(LADSPA_Data));
last_sync = 0;
""" ;
] ;
swhext:callback [
swhext:event "run" ;
swhext:code """
unsigned long pos;
const float omega = 6.2831852f / (period * fs);
const float dr = 0.001f * fs * depth;
float fb;
float d;
float dout, out;
unsigned int dof;
if (feedback > 99.0f) {
fb = 0.99f;
} else if (feedback < -99.0f) {
fb = -0.99f;
} else {
fb = feedback * 0.01f;
}
if (sync > 0) {
if (!last_sync) {
x = 0.5f;
y = 0.0f;
}
plugin_data->last_sync = 1;
} else {
plugin_data->last_sync = 0;
}
for (pos = 0; pos < sample_count; pos++) {
/* Write input into delay line */
buffer[buffer_pos] = input[pos];
/* Calcuate delay */
d = (x + 0.5f) * dr;
dof = f_round(d);
//dout = buffer[(buffer_pos - f_round(d)) & buffer_mask];
dout = cube_interp(d - floor(d),
buffer[(buffer_pos - dof - 3) & buffer_mask],
buffer[(buffer_pos - dof - 2) & buffer_mask],
buffer[(buffer_pos - dof - 1) & buffer_mask],
buffer[(buffer_pos - dof) & buffer_mask]);
/* Write output */
out = (buffer[buffer_pos] + dout) * 0.5f;
buffer[buffer_pos] = input[pos] + out * fb;
buffer_write(output[pos], out);
/* Roll ringbuffer */
buffer_pos = (buffer_pos + 1) & buffer_mask;
/* Run LFO */
x -= omega * y;
y += omega * x;
}
plugin_data->x = x;
plugin_data->y = y;
plugin_data->buffer_pos = buffer_pos;
""" ;
] ;
swhext:callback [
swhext:event "cleanup" ;
swhext:code """
free(plugin_data->buffer);
""" ;
] ;
swhext:createdBy <http://plugin.org.uk/swh-plugins/toTurtle.xsl> .
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