/usr/lib/lv2/hilbert-swh.lv2/plugin.ttl is in swh-lv2 1.0.15+20130517.git978d5d8-1.
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 | @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:hilbert a :Plugin ;
a :AnalyserPlugin ;
doap:name "Hilbert transformer" ;
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#hilbert> ;
:pluginProperty :hardRtCapable ;
:port [
a :InputPort, :AudioPort ;
:name "Input" ;
:index 0 ;
:symbol "input" ;
] ;
:port [
a :OutputPort, :AudioPort ;
:name "0deg output" ;
:index 1 ;
:symbol "output0" ;
] ;
:port [
a :OutputPort, :AudioPort ;
:name "90deg output" ;
:index 2 ;
:symbol "output90" ;
] ;
:port [
a :OutputPort, :ControlPort ;
:name "latency" ;
:index 3 ;
:symbol "latency" ;
:portProperty :reportsLatency ;
] ;
swhext:code """
#include "ladspa-util.h"
#define D_SIZE 256
#define NZEROS 200
/* The non-zero taps of the Hilbert transformer */
static float xcoeffs[] = {
+0.0008103736f, +0.0008457886f, +0.0009017196f, +0.0009793364f,
+0.0010798341f, +0.0012044365f, +0.0013544008f, +0.0015310235f,
+0.0017356466f, +0.0019696659f, +0.0022345404f, +0.0025318040f,
+0.0028630784f, +0.0032300896f, +0.0036346867f, +0.0040788644f,
+0.0045647903f, +0.0050948365f, +0.0056716186f, +0.0062980419f,
+0.0069773575f, +0.0077132300f, +0.0085098208f, +0.0093718901f,
+0.0103049226f, +0.0113152847f, +0.0124104218f, +0.0135991079f,
+0.0148917649f, +0.0163008758f, +0.0178415242f, +0.0195321089f,
+0.0213953037f, +0.0234593652f, +0.0257599469f, +0.0283426636f,
+0.0312667947f, +0.0346107648f, +0.0384804823f, +0.0430224431f,
+0.0484451086f, +0.0550553725f, +0.0633242001f, +0.0740128560f,
+0.0884368322f, +0.1090816773f, +0.1412745301f, +0.1988673273f,
+0.3326528346f, +0.9997730178f, -0.9997730178f, -0.3326528346f,
-0.1988673273f, -0.1412745301f, -0.1090816773f, -0.0884368322f,
-0.0740128560f, -0.0633242001f, -0.0550553725f, -0.0484451086f,
-0.0430224431f, -0.0384804823f, -0.0346107648f, -0.0312667947f,
-0.0283426636f, -0.0257599469f, -0.0234593652f, -0.0213953037f,
-0.0195321089f, -0.0178415242f, -0.0163008758f, -0.0148917649f,
-0.0135991079f, -0.0124104218f, -0.0113152847f, -0.0103049226f,
-0.0093718901f, -0.0085098208f, -0.0077132300f, -0.0069773575f,
-0.0062980419f, -0.0056716186f, -0.0050948365f, -0.0045647903f,
-0.0040788644f, -0.0036346867f, -0.0032300896f, -0.0028630784f,
-0.0025318040f, -0.0022345404f, -0.0019696659f, -0.0017356466f,
-0.0015310235f, -0.0013544008f, -0.0012044365f, -0.0010798341f,
-0.0009793364f, -0.0009017196f, -0.0008457886f, -0.0008103736f,
};
""" ;
swhext:callback [
swhext:event "instantiate" ;
swhext:code """
delay = calloc(D_SIZE, sizeof(LADSPA_Data));
dptr = 0;
""" ;
] ;
swhext:callback [
swhext:event "cleanup" ;
swhext:code """
free(plugin_data->delay);
""" ;
] ;
swhext:callback [
swhext:event "run" ;
swhext:code """
unsigned long pos;
unsigned int i;
float hilb;
for (pos = 0; pos < sample_count; pos++) {
delay[dptr] = input[pos];
hilb = 0.0f;
for (i = 0; i < NZEROS/2; i++) {
hilb += (xcoeffs[i] * delay[(dptr - i*2) & (D_SIZE - 1)]);
}
buffer_write(output0[pos], delay[(dptr - 99) & (D_SIZE - 1)]);
buffer_write(output90[pos], hilb);
dptr = (dptr + 1) & (D_SIZE - 1);
}
plugin_data->dptr = dptr;
*(plugin_data->latency) = 99;
""" ;
] ;
swhext:createdBy <http://plugin.org.uk/swh-plugins/toTurtle.xsl> .
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