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<h1>atsci_randomizer Class Reference</h1><!-- doxytag: class="atsci_randomizer" -->
<p>ATSC data "whitener".
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="atsci__randomizer_8h_source.html">atsci_randomizer.h</a>></code></p>
<p><a href="classatsci__randomizer-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classatsci__randomizer.html#ada8bf463b636b8e8bd845c8556381333">atsci_randomizer</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classatsci__randomizer.html#a1865bb2ca37c9b69aaa8a7af63f169a2">reset</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">reset randomizer LFSR <a href="#a1865bb2ca37c9b69aaa8a7af63f169a2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classatsci__randomizer.html#ab8fb39a99fd894aab795122ee558bd89">randomize</a> (<a class="el" href="classatsc__mpeg__packet__no__sync.html">atsc_mpeg_packet_no_sync</a> &out, const <a class="el" href="classatsc__mpeg__packet.html">atsc_mpeg_packet</a> &in)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">randomize (whiten) mpeg packet and remove leading MPEG-2 sync byte <a href="#ab8fb39a99fd894aab795122ee558bd89"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classatsci__randomizer.html#a65f4416b52d2d298dec86b3a69c94948">derandomize</a> (<a class="el" href="classatsc__mpeg__packet.html">atsc_mpeg_packet</a> &out, const <a class="el" href="classatsc__mpeg__packet__no__sync.html">atsc_mpeg_packet_no_sync</a> &in)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">derandomize (de-whiten) mpeg packet and add leading MPEG-2 sync byte <a href="#a65f4416b52d2d298dec86b3a69c94948"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="classatsci__randomizer.html#a45e77aa7fce62f26bd4de7e0320c93ea">state</a> () const </td></tr>
<tr><td colspan="2"><h2>Friends</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classatsci__randomizer.html#a1060bf9f7a3c4a8e786274178c629c1b">qa_atsci_randomizer</a></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>ATSC data "whitener". </p>
<p>The data randomizer described in ATSC standard A/53B. See figure D4 on page 54. </p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="ada8bf463b636b8e8bd845c8556381333"></a><!-- doxytag: member="atsci_randomizer::atsci_randomizer" ref="ada8bf463b636b8e8bd845c8556381333" args="()" -->
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<td class="memname">atsci_randomizer::atsci_randomizer </td>
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<td class="paramname"></td>
<td> ) </td>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a65f4416b52d2d298dec86b3a69c94948"></a><!-- doxytag: member="atsci_randomizer::derandomize" ref="a65f4416b52d2d298dec86b3a69c94948" args="(atsc_mpeg_packet &out, const atsc_mpeg_packet_no_sync &in)" -->
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<td class="memname">void atsci_randomizer::derandomize </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classatsc__mpeg__packet.html">atsc_mpeg_packet</a> & </td>
<td class="paramname"> <em>out</em>, </td>
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<td class="paramtype">const <a class="el" href="classatsc__mpeg__packet__no__sync.html">atsc_mpeg_packet_no_sync</a> & </td>
<td class="paramname"> <em>in</em></td><td> </td>
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<td>)</td>
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<p>derandomize (de-whiten) mpeg packet and add leading MPEG-2 sync byte </p>
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<a class="anchor" id="ab8fb39a99fd894aab795122ee558bd89"></a><!-- doxytag: member="atsci_randomizer::randomize" ref="ab8fb39a99fd894aab795122ee558bd89" args="(atsc_mpeg_packet_no_sync &out, const atsc_mpeg_packet &in)" -->
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<td class="memname">void atsci_randomizer::randomize </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classatsc__mpeg__packet__no__sync.html">atsc_mpeg_packet_no_sync</a> & </td>
<td class="paramname"> <em>out</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const <a class="el" href="classatsc__mpeg__packet.html">atsc_mpeg_packet</a> & </td>
<td class="paramname"> <em>in</em></td><td> </td>
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<td>)</td>
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<p>randomize (whiten) mpeg packet and remove leading MPEG-2 sync byte </p>
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<a class="anchor" id="a1865bb2ca37c9b69aaa8a7af63f169a2"></a><!-- doxytag: member="atsci_randomizer::reset" ref="a1865bb2ca37c9b69aaa8a7af63f169a2" args="()" -->
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<td class="memname">void atsci_randomizer::reset </td>
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<td> ) </td>
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<p>reset randomizer LFSR </p>
<p>must be called during the Data Segment Sync interval prior to the first data segment. I.e., the LFSR is reset prior to the first field of each VSB data frame. </p>
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<a class="anchor" id="a45e77aa7fce62f26bd4de7e0320c93ea"></a><!-- doxytag: member="atsci_randomizer::state" ref="a45e77aa7fce62f26bd4de7e0320c93ea" args="() const " -->
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<td class="memname">unsigned int atsci_randomizer::state </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td> const<code> [inline]</code></td>
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<hr/><h2>Friends And Related Function Documentation</h2>
<a class="anchor" id="a1060bf9f7a3c4a8e786274178c629c1b"></a><!-- doxytag: member="atsci_randomizer::qa_atsci_randomizer" ref="a1060bf9f7a3c4a8e786274178c629c1b" args="" -->
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<td class="memname">friend class qa_atsci_randomizer<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="atsci__randomizer_8h_source.html">atsci_randomizer.h</a></li>
</ul>
</div>
<hr class="footer"/><address style="text-align: right;"><small>Generated on Wed Dec 29 19:52:31 2010 for GNU Radio 3.3.0 C++ API by
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