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<?xml version="1.0"?>
<!--
###################################################
##Trellis Viterbi
###################################################
-->
<block>
<name>Viterbi</name>
<key>trellis_viterbi_x</key>
<category>[Core]/Trellis Coding</category>
<import>from gnuradio import trellis</import>
<make>trellis.viterbi_$(type)(trellis.fsm($fsm_args), $block_size, $init_state, $final_state)</make>
<callback>set_FSM(trellis.fsm($fsm_args))</callback>
<callback>set_K($block_size)</callback>
<callback>set_S0($init_state)</callback>
<callback>set_SK($final_state)</callback>
<param>
<name>Type</name>
<key>type</key>
<type>enum</type>
<option>
<name>Int</name>
<key>i</key>
<opt>io:int</opt>
</option>
<option>
<name>Short</name>
<key>s</key>
<opt>io:short</opt>
</option>
<option>
<name>Byte</name>
<key>b</key>
<opt>io:byte</opt>
</option>
</param>
<param>
<name>FSM Args</name>
<key>fsm_args</key>
<type>raw</type>
</param>
<param>
<name>Block Size</name>
<key>block_size</key>
<type>int</type>
</param>
<param>
<name>Initial State</name>
<key>init_state</key>
<value>0</value>
<type>int</type>
</param>
<param>
<name>Final State</name>
<key>final_state</key>
<value>-1</value>
<type>int</type>
</param>
<check>(isinstance(eval(""" $fsm_args """[1:-1], locals(),globals()), str) and open($fsm_args).close()) or True</check>
<sink>
<name>in</name>
<type>float</type>
</sink>
<source>
<name>out</name>
<type>$type.io</type>
</source>
<doc>
Viterbi Decoder. \
The fsm arguments are passed directly to the trellis.fsm() constructor.
</doc>
</block>
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