/usr/lib/lv2/amp-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 | @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:amp a :Plugin ;
   a :AmplifierPlugin ;
   doap:name "Simple amplifier" ;
   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#amp> ;
   :pluginProperty :hardRtCapable ;
    
   :port [
     a :InputPort, :ControlPort ;
     :name "Amps gain (dB)" ;
     :index 0 ;
     :symbol "gain" ;
     :minimum -70 ;
     :maximum +70 ;
     
     :default 0.0 ;
   ] ;
  
   :port [
     a :InputPort, :AudioPort ;
     :name "Input" ;
     :index 1 ;
     :symbol "input" ;
   ] ;
  
   :port [
     a :OutputPort, :AudioPort ;
     :name "Output" ;
     :index 2 ;
     :symbol "output" ;
   ] ;
  
   swhext:code """
      #include "ladspa-util.h"
    """ ;
   swhext:callback [
     swhext:event "run" ;
     swhext:code """
      unsigned long pos;
      float coef = DB_CO(gain);
      for (pos = 0; pos < sample_count; pos++) {
        buffer_write(output[pos], input[pos] * coef);
      }
    """ ;
   ] ;
  
   swhext:createdBy <http://plugin.org.uk/swh-plugins/toTurtle.xsl> .
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