<?xml version="1.0"?>

<!--

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##Root Raised Cosine Filter: Custom wrapper

###################################################

 -->

<block>

        <name>Root Raised Cosine Filter</name>

        <key>root_raised_cosine_filter</key>

        <import>from gnuradio import gr</import>

        <import>from gnuradio.gr import firdes</import>

        <make>gr.$(type)(#if str($type).startswith('interp') then $interp else $decim#, firdes.root_raised_cosine(

        $gain, $samp_rate, $sym_rate, $alpha, $ntaps))</make>

        <callback>set_taps(firdes.root_raised_cosine($gain, $samp_rate, $sym_rate, $alpha, $ntaps))</callback>

        <param>

                <name>FIR Type</name>

                <key>type</key>

                <type>enum</type>

                <option>

                        <name>Complex->Complex (Decimating)</name>

                        <key>fir_filter_ccf</key>

                        <opt>input:complex</opt>

                        <opt>output:complex</opt>

                </option>

                <option>

                        <name>Complex->Complex (Interpolating)</name>

                        <key>interp_fir_filter_ccf</key>

                        <opt>input:complex</opt>

                        <opt>output:complex</opt>

                </option>

                <option>

                        <name>Float->Float (Decimating)</name>

                        <key>fir_filter_fff</key>

                        <opt>input:float</opt>

                        <opt>output:float</opt>

                </option>

                <option>

                        <name>Float->Float (Interpolating)</name>

                        <key>interp_fir_filter_fff</key>

                        <opt>input:float</opt>

                        <opt>output:float</opt>

                </option>

        </param>

        <param>

                <name>Decimation</name>

                <key>decim</key>

                <value>1</value>

                <type>int</type>

                <hide>#if str($type).startswith('interp') then 'all' else 'none'#</hide>

        </param>

        <param>

                <name>Interpolation</name>

                <key>interp</key>

                <value>1</value>

                <type>int</type>

                <hide>#if str($type).startswith('interp') then 'none' else 'all'#</hide>

        </param>

        <param>

                <name>Gain</name>

                <key>gain</key>

                <value>1</value>

                <type>real</type>

        </param>

        <param>

                <name>Sample Rate</name>

                <key>samp_rate</key>

                <value>samp_rate</value>

                <type>real</type>

        </param>

        <param>

                <name>Symbol Rate</name>

                <key>sym_rate</key>

                <value>1.0</value>

                <type>real</type>

        </param>

        <param>

                <name>Alpha</name>

                <key>alpha</key>

                <value>0.35</value>

                <type>real</type>

        </param>

        <param>

                <name>Num Taps</name>

                <key>ntaps</key>

                <value>11*samp_rate</value>

                <type>int</type>

        </param>

        <sink>

                <name>in</name>

                <type>$type.input</type>

        </sink>

        <source>

                <name>out</name>

                <type>$type.output</type>

        </source>

        <doc>

This filter is a convenience wrapper for an fir filter and a firdes taps generating function.

Sample rate in Hertz.

        </doc>

</block>