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<li class="navelem"><a class="el" href="namespaceuhd.html">uhd</a></li><li class="navelem"><a class="el" href="structuhd_1_1rx__metadata__t.html">rx_metadata_t</a></li> </ul>
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<div class="title">uhd::rx_metadata_t Struct Reference</div> </div>
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<p><code>#include <<a class="el" href="metadata_8hpp_source.html">metadata.hpp</a>></code></p>
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Public Types</h2></td></tr>
<tr class="memitem:ae3a42ad2414c4f44119157693fe27639"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639">error_code_t</a> { <br />
  <a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639a30c16ffa6113fbbaca9246fb7e1e9175">ERROR_CODE_NONE</a> = 0x0,
<a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639a64632eaf9b5ebdabe94f623bb4017c9b">ERROR_CODE_TIMEOUT</a> = 0x1,
<a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639a117bc72e437060564a5f03b8a9856e88">ERROR_CODE_LATE_COMMAND</a> = 0x2,
<a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639a1a0c6c210cac5dd454ff6eda10524969">ERROR_CODE_BROKEN_CHAIN</a> = 0x4,
<br />
  <a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639af52d18388ea782e474b134bb3bace485">ERROR_CODE_OVERFLOW</a> = 0x8,
<a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639a1b2dd7d72f764f3071e362fe566e0011">ERROR_CODE_ALIGNMENT</a> = 0xc,
<a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639a56ed4063c6f6e1e23ddea5cadf2b807c">ERROR_CODE_BAD_PACKET</a> = 0xf
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<tr class="memitem:a0e376e976185ad4deaf039a5dd9df6f5"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#a0e376e976185ad4deaf039a5dd9df6f5">rx_metadata_t</a> ()</td></tr>
<tr class="memdesc:a0e376e976185ad4deaf039a5dd9df6f5"><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <a href="#a0e376e976185ad4deaf039a5dd9df6f5">More...</a><br /></td></tr>
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<tr class="memitem:a96dee4e7287c55c0b6c59217c6e4f2e4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#a96dee4e7287c55c0b6c59217c6e4f2e4">reset</a> ()</td></tr>
<tr class="memdesc:a96dee4e7287c55c0b6c59217c6e4f2e4"><td class="mdescLeft"> </td><td class="mdescRight">Reset values. <a href="#a96dee4e7287c55c0b6c59217c6e4f2e4">More...</a><br /></td></tr>
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<tr class="memitem:aec9a516f0a33bdd0743c6f049030456a"><td class="memItemLeft" align="right" valign="top">std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#aec9a516f0a33bdd0743c6f049030456a">to_pp_string</a> (bool compact=true) const </td></tr>
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<tr class="memitem:a0a033cef5cc266551cd719e2d233d9c2"><td class="memItemLeft" align="right" valign="top">std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#a0a033cef5cc266551cd719e2d233d9c2">strerror</a> (void) const </td></tr>
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Public Attributes</h2></td></tr>
<tr class="memitem:a7cd978c6290c12f3bb92072286109123"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#a7cd978c6290c12f3bb92072286109123">has_time_spec</a></td></tr>
<tr class="memdesc:a7cd978c6290c12f3bb92072286109123"><td class="mdescLeft"> </td><td class="mdescRight">Has time specification? <a href="#a7cd978c6290c12f3bb92072286109123">More...</a><br /></td></tr>
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<tr class="memitem:a14daac3e0c3a4d2b074962bf2d795b81"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#a14daac3e0c3a4d2b074962bf2d795b81">time_spec</a></td></tr>
<tr class="memdesc:a14daac3e0c3a4d2b074962bf2d795b81"><td class="mdescLeft"> </td><td class="mdescRight">Time of the first sample. <a href="#a14daac3e0c3a4d2b074962bf2d795b81">More...</a><br /></td></tr>
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<tr class="memitem:a10b3fe1655a605bac6b5a07e7c8fe4f4"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#a10b3fe1655a605bac6b5a07e7c8fe4f4">more_fragments</a></td></tr>
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<tr class="memitem:aec8f2278ac684af1ca3ac22ddec668ca"><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#aec8f2278ac684af1ca3ac22ddec668ca">fragment_offset</a></td></tr>
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<tr class="memitem:ac36a6c9889ccbac4999496e3681eb088"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#ac36a6c9889ccbac4999496e3681eb088">start_of_burst</a></td></tr>
<tr class="memdesc:ac36a6c9889ccbac4999496e3681eb088"><td class="mdescLeft"> </td><td class="mdescRight">Start of burst will be true for the first packet in the chain. <a href="#ac36a6c9889ccbac4999496e3681eb088">More...</a><br /></td></tr>
<tr class="separator:ac36a6c9889ccbac4999496e3681eb088"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a69e306add401a7e0a0caa5e30d6ee5ce"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#a69e306add401a7e0a0caa5e30d6ee5ce">end_of_burst</a></td></tr>
<tr class="memdesc:a69e306add401a7e0a0caa5e30d6ee5ce"><td class="mdescLeft"> </td><td class="mdescRight">End of burst will be true for the last packet in the chain. <a href="#a69e306add401a7e0a0caa5e30d6ee5ce">More...</a><br /></td></tr>
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<tr class="memitem:ab0a70db215d88d013c6b71e132ac3b54"><td class="memItemLeft" align="right" valign="top">enum <br class="typebreak" />
<a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639">uhd::rx_metadata_t::error_code_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#ab0a70db215d88d013c6b71e132ac3b54">error_code</a></td></tr>
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<tr class="memitem:a1bd09159cf5f2109cfa168758213ddee"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structuhd_1_1rx__metadata__t.html#a1bd09159cf5f2109cfa168758213ddee">out_of_sequence</a></td></tr>
<tr class="memdesc:a1bd09159cf5f2109cfa168758213ddee"><td class="mdescLeft"> </td><td class="mdescRight">Out of sequence. The transport has either dropped a packet or received data out of order. <a href="#a1bd09159cf5f2109cfa168758213ddee">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>RX metadata structure for describing sent IF data. Includes time specification, fragmentation flags, burst flags, and error codes. The receive routines will convert IF data headers into metadata. </p>
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<td class="memname">enum <a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639">uhd::rx_metadata_t::error_code_t</a></td>
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<p>The error condition on a receive call.</p>
<p>Note: When an overrun occurs in continuous streaming mode, the device will continue to send samples to the host. For other streaming modes, streaming will discontinue until the user issues a new stream command.</p>
<p>The metadata fields have meaning for the following error codes:</p><ul>
<li>none</li>
<li>late command</li>
<li>broken chain</li>
<li>overflow </li>
</ul>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="ae3a42ad2414c4f44119157693fe27639a30c16ffa6113fbbaca9246fb7e1e9175"></a>ERROR_CODE_NONE </td><td class="fielddoc">
<p>No error associated with this metadata. </p>
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<tr><td class="fieldname"><a class="anchor" id="ae3a42ad2414c4f44119157693fe27639a64632eaf9b5ebdabe94f623bb4017c9b"></a>ERROR_CODE_TIMEOUT </td><td class="fielddoc">
<p>No packet received, implementation timed-out. </p>
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<tr><td class="fieldname"><a class="anchor" id="ae3a42ad2414c4f44119157693fe27639a117bc72e437060564a5f03b8a9856e88"></a>ERROR_CODE_LATE_COMMAND </td><td class="fielddoc">
<p>A stream command was issued in the past. </p>
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<tr><td class="fieldname"><a class="anchor" id="ae3a42ad2414c4f44119157693fe27639a1a0c6c210cac5dd454ff6eda10524969"></a>ERROR_CODE_BROKEN_CHAIN </td><td class="fielddoc">
<p>Expected another stream command. </p>
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<tr><td class="fieldname"><a class="anchor" id="ae3a42ad2414c4f44119157693fe27639af52d18388ea782e474b134bb3bace485"></a>ERROR_CODE_OVERFLOW </td><td class="fielddoc">
<p>An internal receive buffer has filled or a sequence error has been detected. So, why is this overloaded? Simple: legacy support. It would have been much cleaner to create a separate error code for a sequence error, but that would have broken legacy applications. So, the out_of_sequence flag was added to differentiate between the two error cases. In either case, data is missing between this time_spec and the and the time_spec of the next successful receive. </p>
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<tr><td class="fieldname"><a class="anchor" id="ae3a42ad2414c4f44119157693fe27639a1b2dd7d72f764f3071e362fe566e0011"></a>ERROR_CODE_ALIGNMENT </td><td class="fielddoc">
<p>Multi-channel alignment failed. </p>
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<tr><td class="fieldname"><a class="anchor" id="ae3a42ad2414c4f44119157693fe27639a56ed4063c6f6e1e23ddea5cadf2b807c"></a>ERROR_CODE_BAD_PACKET </td><td class="fielddoc">
<p>The packet could not be parsed. </p>
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<h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td class="memname">uhd::rx_metadata_t::rx_metadata_t </td>
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<p>Default constructor. </p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">void uhd::rx_metadata_t::reset </td>
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<td class="paramname"></td><td>)</td>
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<p>Reset values. </p>
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<td class="memname">std::string uhd::rx_metadata_t::strerror </td>
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<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Similar to C's <a class="el" href="structuhd_1_1rx__metadata__t.html#a0a033cef5cc266551cd719e2d233d9c2">strerror()</a> function, creates a std::string describing the error code. </p><dl class="section return"><dt>Returns</dt><dd>a printable string representing the error. </dd></dl>
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<td class="memname">std::string uhd::rx_metadata_t::to_pp_string </td>
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<td class="paramtype">bool </td>
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<td> const</td>
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<p>Convert a <a class="el" href="structuhd_1_1rx__metadata__t.html">rx_metadata_t</a> into a pretty print string.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">compact</td><td>Set to false for a more verbose output. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>a printable string representing the metadata. </dd></dl>
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<h2 class="groupheader">Member Data Documentation</h2>
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<p>End of burst will be true for the last packet in the chain. </p>
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<td class="memname">enum <a class="el" href="structuhd_1_1rx__metadata__t.html#ae3a42ad2414c4f44119157693fe27639">uhd::rx_metadata_t::error_code_t</a> uhd::rx_metadata_t::error_code</td>
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<td class="memname">size_t uhd::rx_metadata_t::fragment_offset</td>
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<p>Fragmentation offset: The fragment offset is the sample number at the start of the receive buffer. For non-fragmented receives, the fragment offset should always be zero. </p>
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<td class="memname">bool uhd::rx_metadata_t::has_time_spec</td>
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<p>Has time specification? </p>
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<td class="memname">bool uhd::rx_metadata_t::more_fragments</td>
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<p>Fragmentation flag: Similar to IPv4 fragmentation: <a href="http://en.wikipedia.org/wiki/IPv4#Fragmentation_and_reassembly">http://en.wikipedia.org/wiki/IPv4#Fragmentation_and_reassembly</a> More fragments is true when the input buffer has insufficient size to fit an entire received packet. More fragments will be false for the last fragment. </p>
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<td class="memname">bool uhd::rx_metadata_t::out_of_sequence</td>
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<p>Out of sequence. The transport has either dropped a packet or received data out of order. </p>
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<p>Start of burst will be true for the first packet in the chain. </p>
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<td class="memname"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> uhd::rx_metadata_t::time_spec</td>
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<p>Time of the first sample. </p>
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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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