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   1 <?xml version="1.0"?>
   2 <!--
   3 ###################################################
   4 ##FFT
   5 ###################################################
   6  -->
   7 <block>
   8         <name>FFT</name>
   9         <key>gr_fft_vxx</key>
  10         <import>from gnuradio import gr</import>
  11         <import>from gnuradio import window</import>
  12         <make>#if $type() == "complex"
  13 gr.fft_vcc($fft_size, $forward, $window, $shift)
  14 #else
  15 gr.fft_vfc($fft_size, $forward, $window)
  16 #end if</make>
  17         <param>
  18                 <name>Input Type</name>
  19                 <key>type</key>
  20                 <type>enum</type>
  21                 <option>
  22                         <name>Complex</name>
  23                         <key>complex</key>
  24                         <opt>hide_shift:</opt>
  25                 </option>
  26                 <option>
  27                         <name>Float</name>
  28                         <key>float</key>
  29                         <opt>hide_shift:all</opt>
  30                 </option>
  31         </param>
  32         <param>
  33                 <name>FFT Size</name>
  34                 <key>fft_size</key>
  35                 <value>1024</value>
  36                 <type>int</type>
  37         </param>
  38         <param>
  39                 <name>Forward/Reverse</name>
  40                 <key>forward</key>
  41                 <type>enum</type>
  42                 <option>
  43                         <name>Forward</name>
  44                         <key>True</key>
  45                 </option>
  46                 <option>
  47                         <name>Reverse</name>
  48                         <key>False</key>
  49                 </option>
  50         </param>
  51         <param>
  52                 <name>Window</name>
  53                 <key>window</key>
  54                 <value>window.blackmanharris(1024)</value>
  55                 <type>real_vector</type>
  56         </param>
  57         <param>
  58                 <name>Shift</name>
  59                 <key>shift</key>
  60                 <type>enum</type>
  61                 <hide>$type.hide_shift</hide>
  62                 <option>
  63                         <name>Yes</name>
  64                         <key>True</key>
  65                 </option>
  66                 <option>
  67                         <name>No</name>
  68                         <key>False</key>
  69                 </option>
  70         </param>
  71         <sink>
  72                 <name>in</name>
  73                 <type>$type</type>
  74                 <vlen>$fft_size</vlen>
  75         </sink>
  76         <source>
  77                 <name>out</name>
  78                 <type>complex</type>
  79                 <vlen>$fft_size</vlen>
  80         </source>
  81 </block>