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   1 <?xml version="1.0"?>
   2 <!--
   3 ###################################################
   4 ##Decimating FIR Filter
   5 ###################################################
   6  -->
   7 <block>
   8         <name>Decimating FIR Filter</name>
   9         <key>gr_fir_filter_xxx</key>
  10         <import>from gnuradio import gr</import>
  11         <import>from gnuradio.gr import firdes</import>
  12         <make>gr.fir_filter_$(type)($decim, $taps)</make>
  13         <callback>set_taps($taps)</callback>
  14         <param>
  15                 <name>Type</name>
  16                 <key>type</key>
  17                 <type>enum</type>
  18                 <option>
  19                         <name>Complex->Complex (Complex Taps)</name>
  20                         <key>ccc</key>
  21                         <opt>input:complex</opt>
  22                         <opt>output:complex</opt>
  23                         <opt>taps:complex_vector</opt>
  24                 </option>
  25                 <option>
  26                         <name>Complex->Complex (Real Taps)</name>
  27                         <key>ccf</key>
  28                         <opt>input:complex</opt>
  29                         <opt>output:complex</opt>
  30                         <opt>taps:real_vector</opt>
  31                 </option>
  32                 <option>
  33                         <name>Float->Complex (Complex Taps)</name>
  34                         <key>fcc</key>
  35                         <opt>input:float</opt>
  36                         <opt>output:complex</opt>
  37                         <opt>taps:complex_vector</opt>
  38                 </option>
  39                 <option>
  40                         <name>Float->Float (Real Taps)</name>
  41                         <key>fff</key>
  42                         <opt>input:float</opt>
  43                         <opt>output:float</opt>
  44                         <opt>taps:real_vector</opt>
  45                 </option>
  46                 <option>
  47                         <name>Float->Short (Real Taps)</name>
  48                         <key>fsf</key>
  49                         <opt>input:float</opt>
  50                         <opt>output:short</opt>
  51                         <opt>taps:real_vector</opt>
  52                 </option>
  53                 <option>
  54                         <name>Short->Complex (Complex Taps)</name>
  55                         <key>scc</key>
  56                         <opt>input:short</opt>
  57                         <opt>output:complex</opt>
  58                         <opt>taps:complex_vector</opt>
  59                 </option>
  60         </param>
  61         <param>
  62                 <name>Decimation</name>
  63                 <key>decim</key>
  64                 <value>1</value>
  65                 <type>int</type>
  66         </param>
  67         <param>
  68                 <name>Taps</name>
  69                 <key>taps</key>
  70                 <type>$type.taps</type>
  71         </param>
  72         <sink>
  73                 <name>in</name>
  74                 <type>$type.input</type>
  75         </sink>
  76         <source>
  77                 <name>out</name>
  78                 <type>$type.output</type>
  79         </source>
  80 </block>