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<title>OpenDDS: OpenDDS::DCPS::DataSampleHeader Struct Reference</title>
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<a class="el" href="a01301.html">OpenDDS</a>::<a class="el" href="a01275.html">DCPS</a>::<a class="el" href="a00504.html">DataSampleHeader</a></div>
<h1>OpenDDS::DCPS::DataSampleHeader Struct Reference</h1><!-- doxytag: class="OpenDDS::DCPS::DataSampleHeader" --><code>#include &lt;DataSampleHeader.h&gt;</code>
<p>
Collaboration diagram for OpenDDS::DCPS::DataSampleHeader:<p><center><img src="a02651.png" border="0" usemap="#a02652" alt="Collaboration graph"></center>
<map name="a02652">
<area href="a00552.html" shape="rect" coords="47,98,228,122" alt="">
<area href="a00542.html" shape="rect" coords="38,7,238,31" alt="">
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="a00015.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#6a79531005b89aa6bbb5c0c7d2ff1016">DataSampleHeader</a> ()</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default constructor.  <a href="#6a79531005b89aa6bbb5c0c7d2ff1016"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#9e9e4fa5efef1c56d797ea0b01a6a427">DataSampleHeader</a> (ACE_Message_Block *buffer)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Construct with values extracted from a buffer.  <a href="#9e9e4fa5efef1c56d797ea0b01a6a427"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#c2e3398cc74ef1893bbe33361977390a">DataSampleHeader</a> (ACE_Message_Block &amp;buffer)</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a00504.html">DataSampleHeader</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#2af33d42d72d3c2afa8bf0b0feec8cbb">operator=</a> (ACE_Message_Block *buffer)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Assignment from an ACE_Message_Block.  <a href="#2af33d42d72d3c2afa8bf0b0feec8cbb"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a00504.html">DataSampleHeader</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#91001bb1cde7165183f0167afb6dc172">operator=</a> (ACE_Message_Block &amp;buffer)</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#65424eb66bcd9d755f2d714e1d60833c">marshaled_size</a> ()</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Amount of data read when initializing from a buffer.  <a href="#65424eb66bcd9d755f2d714e1d60833c"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#3d44f472bffc2883c1bdd2ecc892f7f1">max_marshaled_size</a> ()</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Similar to IDL compiler generated methods.  <a href="#3d44f472bffc2883c1bdd2ecc892f7f1"></a><br></td></tr>
<tr><td colspan="2"><br><h2>Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">char&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#00fc1ce577a5e44dd98096f941fc1363">message_id_</a></td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">The enum MessageId.  <a href="#00fc1ce577a5e44dd98096f941fc1363"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#8516a002ebc79372489a5570aafa24f2">last_sample_</a>: 1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#7e8f0a5abbe769290d2562080eb08655">byte_order_</a>: 1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#f0c95eaf838d1b25379f53ab4448dc68">reserved_1</a>: 1</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">reservered bits  <a href="#f0c95eaf838d1b25379f53ab4448dc68"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#db60d780633f09720d21ab829871701b">reserved_2</a>: 1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#ed33bddf276e5172a20e976d124ee3f2">reserved_3</a>: 1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#9e3a0c2beccf0654d07a5eb6ba170255">reserved_4</a>: 1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#ad1404a8e022d2b59d21ab19e26f1243">reserved_5</a>: 1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#3cc045708ba8b7f60693a10053d89601">reserved_6</a>: 1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">ACE_UINT32&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#d1b5da3f48503d5c5f80160cbd6544e5">message_length_</a></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">ACE_INT16&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#2920e86047ba6323ea57abbff284d1af">sequence_</a></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">ACE_INT32&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#80f3cc050909dce7fc74abe53ca0ba6b">source_timestamp_sec_</a></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">ACE_UINT32&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#8af3428e86bff5e5a0f19097afbc7549">source_timestamp_nanosec_</a></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">ACE_UINT16&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#49cad0e8c8aaf74482edf54033f0493d">coherency_group_</a></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a00552.html">PublicationId</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#88a2739076ae49105fe537070f7a7448">publication_id_</a></td></tr>

<tr><td colspan="2"><br><h2>Private Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#33dcca231de5014a02710eabf972c348">init</a> (ACE_Message_Block *buffer)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Implement load from buffer.  <a href="#33dcca231de5014a02710eabf972c348"></a><br></td></tr>
<tr><td colspan="2"><br><h2>Private Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00504.html#f12f44fb97fc1abf84a50075b23d8b2c">marshaled_size_</a></td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Keep track of the amount of data read from a buffer.  <a href="#f12f44fb97fc1abf84a50075b23d8b2c"></a><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
The header message of a data sample. This header and the data sample are in different message block and will be chained together. 
<p>
<hr><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" name="6a79531005b89aa6bbb5c0c7d2ff1016"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::DataSampleHeader" ref="6a79531005b89aa6bbb5c0c7d2ff1016" args="()" -->
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          <td class="memname">ACE_INLINE OpenDDS::DCPS::DataSampleHeader::DataSampleHeader           </td>
          <td>(</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>
Default constructor. 
<p>
-*- C++ -*-<p>
<dl compact><dt><b>Id</b></dt><dd><a class="el" href="a00824.html">DataSampleHeader.inl</a> 1435 2008-10-06 22:42:53Z martinezm </dd></dl>

</div>
</div><p>
<a class="anchor" name="9e9e4fa5efef1c56d797ea0b01a6a427"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::DataSampleHeader" ref="9e9e4fa5efef1c56d797ea0b01a6a427" args="(ACE_Message_Block *buffer)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">ACE_INLINE OpenDDS::DCPS::DataSampleHeader::DataSampleHeader           </td>
          <td>(</td>
          <td class="paramtype">ACE_Message_Block *&nbsp;</td>
          <td class="paramname"> <em>buffer</em>          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"></td>
        </tr>
      </table>
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<div class="memdoc">

<p>
Construct with values extracted from a buffer. 
<p>

</div>
</div><p>
<a class="anchor" name="c2e3398cc74ef1893bbe33361977390a"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::DataSampleHeader" ref="c2e3398cc74ef1893bbe33361977390a" args="(ACE_Message_Block &amp;buffer)" -->
<div class="memitem">
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          <td class="memname">ACE_INLINE OpenDDS::DCPS::DataSampleHeader::DataSampleHeader           </td>
          <td>(</td>
          <td class="paramtype">ACE_Message_Block &amp;&nbsp;</td>
          <td class="paramname"> <em>buffer</em>          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>

</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="33dcca231de5014a02710eabf972c348"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::init" ref="33dcca231de5014a02710eabf972c348" args="(ACE_Message_Block *buffer)" -->
<div class="memitem">
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      <table class="memname">
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          <td class="memname">void OpenDDS::DCPS::DataSampleHeader::init           </td>
          <td>(</td>
          <td class="paramtype">ACE_Message_Block *&nbsp;</td>
          <td class="paramname"> <em>buffer</em>          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"><code> [private]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>
Implement load from buffer. 
<p>

</div>
</div><p>
<a class="anchor" name="65424eb66bcd9d755f2d714e1d60833c"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::marshaled_size" ref="65424eb66bcd9d755f2d714e1d60833c" args="()" -->
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          <td class="memname">ACE_INLINE size_t OpenDDS::DCPS::DataSampleHeader::marshaled_size           </td>
          <td>(</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"></td>
        </tr>
      </table>
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<div class="memdoc">

<p>
Amount of data read when initializing from a buffer. 
<p>

</div>
</div><p>
<a class="anchor" name="3d44f472bffc2883c1bdd2ecc892f7f1"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::max_marshaled_size" ref="3d44f472bffc2883c1bdd2ecc892f7f1" args="()" -->
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<div class="memproto">
      <table class="memname">
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          <td class="memname">ACE_INLINE size_t OpenDDS::DCPS::DataSampleHeader::max_marshaled_size           </td>
          <td>(</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>
Similar to IDL compiler generated methods. 
<p>

</div>
</div><p>
<a class="anchor" name="91001bb1cde7165183f0167afb6dc172"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::operator=" ref="91001bb1cde7165183f0167afb6dc172" args="(ACE_Message_Block &amp;buffer)" -->
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          <td class="memname">ACE_INLINE <a class="el" href="a00504.html">OpenDDS::DCPS::DataSampleHeader</a> &amp; OpenDDS::DCPS::DataSampleHeader::operator=           </td>
          <td>(</td>
          <td class="paramtype">ACE_Message_Block &amp;&nbsp;</td>
          <td class="paramname"> <em>buffer</em>          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>

</div>
</div><p>
<a class="anchor" name="2af33d42d72d3c2afa8bf0b0feec8cbb"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::operator=" ref="2af33d42d72d3c2afa8bf0b0feec8cbb" args="(ACE_Message_Block *buffer)" -->
<div class="memitem">
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      <table class="memname">
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          <td class="memname">ACE_INLINE <a class="el" href="a00504.html">OpenDDS::DCPS::DataSampleHeader</a> &amp; OpenDDS::DCPS::DataSampleHeader::operator=           </td>
          <td>(</td>
          <td class="paramtype">ACE_Message_Block *&nbsp;</td>
          <td class="paramname"> <em>buffer</em>          </td>
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