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<title>GNU Radio 3.2.2 C++ API: gr_descrambler_bb Class Reference</title>
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<h1>gr_descrambler_bb Class Reference<br/>
<small>
[<a class="el" href="group__coding__blk.html">Information Coding and Decoding</a>]</small>
</h1><!-- doxytag: class="gr_descrambler_bb" --><!-- doxytag: inherits="gr_sync_block" -->
<p><code>#include <<a class="el" href="gr__descrambler__bb_8h_source.html">gr_descrambler_bb.h</a>></code></p>
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Inheritance diagram for gr_descrambler_bb:</div>
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<div class="center"><img src="classgr__descrambler__bb__inherit__graph.png" border="0" usemap="#gr__descrambler__bb_inherit__map" alt="Inheritance graph"/></div>
<map name="gr__descrambler__bb_inherit__map" id="gr__descrambler__bb_inherit__map">
<area shape="rect" id="node2" href="classgr__sync__block.html" title="synchronous 1:1 input to output with historyOverride work to provide the signal processing..." alt="" coords="17,160,124,189"/><area shape="rect" id="node4" href="classgr__block.html" title="The abstract base class for all 'terminal' processing blocks.A signal processing..." alt="" coords="36,83,105,112"/><area shape="rect" id="node6" href="classgr__basic__block.html" title="The abstract base class for all signal processing blocks.Basic blocks are the bare..." alt="" coords="16,5,125,35"/></map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classgr__descrambler__bb-members.html">List of all members.</a></p>
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<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__descrambler__bb.html#ac64b7d32099c1616decec364ba6dc15d">work</a> (int noutput_items, <a class="el" href="classstd_1_1vector.html">gr_vector_const_void_star</a> &input_items, <a class="el" href="classstd_1_1vector.html">gr_vector_void_star</a> &output_items)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">just like <a class="el" href="classgr__block.html#a137b93d87dc83bbdb6369d33f4ea8197" title="compute output items from input items">gr_block::general_work</a>, only this arranges to call consume_each for you <a href="#ac64b7d32099c1616decec364ba6dc15d"></a><br/></td></tr>
<tr><td colspan="2"><h2>Friends</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classboost_1_1shared__ptr.html">gr_descrambler_bb_sptr</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__descrambler__bb.html#a5b2f9c0eaf08cb50289289317cdd8a53">gr_make_descrambler_bb</a> (int mask, int seed, int len)</td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Descramble an input stream using an LFSR. This block works on the LSB only of the input data stream, i.e., on an "unpacked binary" stream, and produces the same format on its output.</p>
<dl><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>mask</em> </td><td>Polynomial mask for LFSR </td></tr>
<tr><td valign="top"></td><td valign="top"><em>seed</em> </td><td>Initial shift register contents </td></tr>
<tr><td valign="top"></td><td valign="top"><em>len</em> </td><td>Shift register length </td></tr>
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</dd>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ac64b7d32099c1616decec364ba6dc15d"></a><!-- doxytag: member="gr_descrambler_bb::work" ref="ac64b7d32099c1616decec364ba6dc15d" args="(int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)" -->
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<td class="memname">int gr_descrambler_bb::work </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>noutput_items</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classstd_1_1vector.html">gr_vector_const_void_star</a> & </td>
<td class="paramname"> <em>input_items</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classstd_1_1vector.html">gr_vector_void_star</a> & </td>
<td class="paramname"> <em>output_items</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td><code> [virtual]</code></td>
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<p>just like <a class="el" href="classgr__block.html#a137b93d87dc83bbdb6369d33f4ea8197" title="compute output items from input items">gr_block::general_work</a>, only this arranges to call consume_each for you </p>
<p>The user must override work to define the signal processing code </p>
<p>Implements <a class="el" href="classgr__sync__block.html#a0c523f4285a6eb690f677ee6295ab117">gr_sync_block</a>.</p>
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<hr/><h2>Friends And Related Function Documentation</h2>
<a class="anchor" id="a5b2f9c0eaf08cb50289289317cdd8a53"></a><!-- doxytag: member="gr_descrambler_bb::gr_make_descrambler_bb" ref="a5b2f9c0eaf08cb50289289317cdd8a53" args="(int mask, int seed, int len)" -->
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<td class="memname"><a class="el" href="classboost_1_1shared__ptr.html">gr_descrambler_bb_sptr</a> gr_make_descrambler_bb </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>mask</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>seed</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>len</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td><code> [friend]</code></td>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="gr__descrambler__bb_8h_source.html">gr_descrambler_bb.h</a></li>
</ul>
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