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<p><code>#include &lt;<a class="el" href="metadata_8hpp_source.html">metadata.hpp</a>&gt;</code></p>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a2be1b5c0351746c78fa3bcb74a8ff5da"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5da">event_code_t</a> { <br />
&#160;&#160;<a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5daa014377f516b86f918b453abac00ac4f5">EVENT_CODE_BURST_ACK</a> = 0x1, 
<a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5daa7834fe0573502f4c5f3b6c0588e52ff3">EVENT_CODE_UNDERFLOW</a> = 0x2, 
<a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5daa56db266e2e6035f5b888d5b3ee43258f">EVENT_CODE_SEQ_ERROR</a> = 0x4, 
<a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5daa7bfefebda6f394356f08f067d2752357">EVENT_CODE_TIME_ERROR</a> = 0x8, 
<br />
&#160;&#160;<a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5daa0f682672d74109515266ec07e70c0ebc">EVENT_CODE_UNDERFLOW_IN_PACKET</a> = 0x10, 
<a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5daaeffb1251de478df334ec04221e08eb88">EVENT_CODE_SEQ_ERROR_IN_BURST</a> = 0x20, 
<a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5daac3d8dc513bf9784e71e310da5ec16ae1">EVENT_CODE_USER_PAYLOAD</a> = 0x40
<br />
 }</td></tr>
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Public Attributes</h2></td></tr>
<tr class="memitem:aa17b8f14b9ddafca72ef869496723925"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1async__metadata__t.html#aa17b8f14b9ddafca72ef869496723925">channel</a></td></tr>
<tr class="memdesc:aa17b8f14b9ddafca72ef869496723925"><td class="mdescLeft">&#160;</td><td class="mdescRight">The channel number in a mimo configuration.  <a href="#aa17b8f14b9ddafca72ef869496723925">More...</a><br /></td></tr>
<tr class="separator:aa17b8f14b9ddafca72ef869496723925"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a333d1558d0bf0621f4476fcab2e8a269"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1async__metadata__t.html#a333d1558d0bf0621f4476fcab2e8a269">has_time_spec</a></td></tr>
<tr class="memdesc:a333d1558d0bf0621f4476fcab2e8a269"><td class="mdescLeft">&#160;</td><td class="mdescRight">Has time specification?  <a href="#a333d1558d0bf0621f4476fcab2e8a269">More...</a><br /></td></tr>
<tr class="separator:a333d1558d0bf0621f4476fcab2e8a269"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab55e34d55bc0c11e12625d7b5df19769"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1async__metadata__t.html#ab55e34d55bc0c11e12625d7b5df19769">time_spec</a></td></tr>
<tr class="memdesc:ab55e34d55bc0c11e12625d7b5df19769"><td class="mdescLeft">&#160;</td><td class="mdescRight">When the async event occurred.  <a href="#ab55e34d55bc0c11e12625d7b5df19769">More...</a><br /></td></tr>
<tr class="separator:ab55e34d55bc0c11e12625d7b5df19769"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a84f8135361b384da656e3f1bd8756bc8"><td class="memItemLeft" align="right" valign="top">enum <br class="typebreak" />
<a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5da">uhd::async_metadata_t::event_code_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1async__metadata__t.html#a84f8135361b384da656e3f1bd8756bc8">event_code</a></td></tr>
<tr class="separator:a84f8135361b384da656e3f1bd8756bc8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a442f6c59e9dbaa065cf06632661ec9fa"><td class="memItemLeft" align="right" valign="top">boost::uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1async__metadata__t.html#a442f6c59e9dbaa065cf06632661ec9fa">user_payload</a> [4]</td></tr>
<tr class="separator:a442f6c59e9dbaa065cf06632661ec9fa"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Async metadata structure for describing transmit related events. </p>
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          <td class="memname">enum <a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5da">uhd::async_metadata_t::event_code_t</a></td>
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<p>The type of event for a receive async message call. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="a2be1b5c0351746c78fa3bcb74a8ff5daa014377f516b86f918b453abac00ac4f5"></a>EVENT_CODE_BURST_ACK&#160;</td><td class="fielddoc">
<p>A burst was successfully transmitted. </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="a2be1b5c0351746c78fa3bcb74a8ff5daa7834fe0573502f4c5f3b6c0588e52ff3"></a>EVENT_CODE_UNDERFLOW&#160;</td><td class="fielddoc">
<p>An internal send buffer has emptied. </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="a2be1b5c0351746c78fa3bcb74a8ff5daa56db266e2e6035f5b888d5b3ee43258f"></a>EVENT_CODE_SEQ_ERROR&#160;</td><td class="fielddoc">
<p>Packet loss between host and device. </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="a2be1b5c0351746c78fa3bcb74a8ff5daa7bfefebda6f394356f08f067d2752357"></a>EVENT_CODE_TIME_ERROR&#160;</td><td class="fielddoc">
<p>Packet had time that was late. </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="a2be1b5c0351746c78fa3bcb74a8ff5daa0f682672d74109515266ec07e70c0ebc"></a>EVENT_CODE_UNDERFLOW_IN_PACKET&#160;</td><td class="fielddoc">
<p>Underflow occurred inside a packet. </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="a2be1b5c0351746c78fa3bcb74a8ff5daaeffb1251de478df334ec04221e08eb88"></a>EVENT_CODE_SEQ_ERROR_IN_BURST&#160;</td><td class="fielddoc">
<p>Packet loss within a burst. </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="a2be1b5c0351746c78fa3bcb74a8ff5daac3d8dc513bf9784e71e310da5ec16ae1"></a>EVENT_CODE_USER_PAYLOAD&#160;</td><td class="fielddoc">
<p>Some kind of custom user payload. </p>
</td></tr>
</table>

</div>
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<h2 class="groupheader">Member Data Documentation</h2>
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          <td class="memname">size_t uhd::async_metadata_t::channel</td>
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<p>The channel number in a mimo configuration. </p>

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          <td class="memname">enum <a class="el" href="structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5da">uhd::async_metadata_t::event_code_t</a>  uhd::async_metadata_t::event_code</td>
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          <td class="memname">bool uhd::async_metadata_t::has_time_spec</td>
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<p>Has time specification? </p>

</div>
</div>
<a class="anchor" id="ab55e34d55bc0c11e12625d7b5df19769"></a>
<div class="memitem">
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          <td class="memname"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> uhd::async_metadata_t::time_spec</td>
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<p>When the async event occurred. </p>

</div>
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<a class="anchor" id="a442f6c59e9dbaa065cf06632661ec9fa"></a>
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          <td class="memname">boost::uint32_t uhd::async_metadata_t::user_payload[4]</td>
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<p>A special payload populated by custom FPGA fabric. </p>

</div>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>include/uhd/types/<a class="el" href="metadata_8hpp_source.html">metadata.hpp</a></li>
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