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<div id="projectname">ZVBI Library
 <span id="projectnumber">0.2.35</span>
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<div class="title">Extended Data Service (XDS) demultiplexer<div class="ingroups"><a class="el" href="group__LowDec.html">Low Level Decoding</a></div></div> </div>
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<p>Separating XDS data from a Closed Caption stream (EIA 608).
<a href="#details">More...</a></p>
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Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structvbi__xds__packet.html">vbi_xds_packet</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">XDS Packet. A pointer to this structure is passed to the XDS demux callback. <a href="structvbi__xds__packet.html#details">More...</a><br /></td></tr>
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Macros</h2></td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>VBI_XDS_MAX_CLASSES</b>   (VBI_XDS_CLASS_UNDEFINED + 1)</td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>VBI_XDS_MAX_SUBCLASSES</b>   (0x18)</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:gaf80f7d4ac1f11029e8c6cc353ec09098"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gaf80f7d4ac1f11029e8c6cc353ec09098"></a>
typedef unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#gaf80f7d4ac1f11029e8c6cc353ec09098">vbi_xds_subclass</a></td></tr>
<tr class="memdesc:gaf80f7d4ac1f11029e8c6cc353ec09098"><td class="mdescLeft"> </td><td class="mdescRight">Generic XDS subclass. You must cast to the appropriate subclass type depending on the XDS class. <br /></td></tr>
<tr class="separator:gaf80f7d4ac1f11029e8c6cc353ec09098"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaccdbd208cea6c673ec3fa133d2e3f70e"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct__vbi__xds__demux.html">_vbi_xds_demux</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a></td></tr>
<tr class="memdesc:gaccdbd208cea6c673ec3fa133d2e3f70e"><td class="mdescLeft"> </td><td class="mdescRight">XDS demultiplexer. <a href="#gaccdbd208cea6c673ec3fa133d2e3f70e">More...</a><br /></td></tr>
<tr class="separator:gaccdbd208cea6c673ec3fa133d2e3f70e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa0dd8918645dc421d162de2f6cfb96fd"><td class="memItemLeft" align="right" valign="top">typedef vbi_bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#gaa0dd8918645dc421d162de2f6cfb96fd">vbi_xds_demux_cb</a> (<a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> *xd, const <a class="el" href="structvbi__xds__packet.html">vbi_xds_packet</a> *xp, void *user_data)</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:gabcd0a93a9fdda213b25e118bce82bc7c"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gabcd0a93a9fdda213b25e118bce82bc7c"></a>enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#gabcd0a93a9fdda213b25e118bce82bc7c">vbi_xds_class</a> { <br />
  <b>VBI_XDS_CLASS_CURRENT</b> = 0x00,
<br />
  <b>VBI_XDS_CLASS_FUTURE</b>,
<br />
  <b>VBI_XDS_CLASS_CHANNEL</b>,
<br />
  <b>VBI_XDS_CLASS_MISC</b>,
<br />
  <b>VBI_XDS_CLASS_PUBLIC_SERVICE</b>,
<br />
  <b>VBI_XDS_CLASS_RESERVED</b>,
<br />
  <b>VBI_XDS_CLASS_UNDEFINED</b>
<br />
}</td></tr>
<tr class="memdesc:gabcd0a93a9fdda213b25e118bce82bc7c"><td class="mdescLeft"> </td><td class="mdescRight">XDS packet class. XDS data is transmitted in packets. Each packet belongs to one of seven classes. <br /></td></tr>
<tr class="separator:gabcd0a93a9fdda213b25e118bce82bc7c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga764e42b5ff94755be0eec8f009b5ce1d"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#ga764e42b5ff94755be0eec8f009b5ce1d">vbi_xds_subclass_program</a> { <br />
  <b>VBI_XDS_PROGRAM_ID</b> = 0x01,
<br />
  <b>VBI_XDS_PROGRAM_LENGTH</b>,
<br />
  <b>VBI_XDS_PROGRAM_NAME</b>,
<br />
  <b>VBI_XDS_PROGRAM_TYPE</b>,
<br />
  <b>VBI_XDS_PROGRAM_RATING</b>,
<br />
  <b>VBI_XDS_PROGRAM_AUDIO_SERVICES</b>,
<br />
  <b>VBI_XDS_PROGRAM_CAPTION_SERVICES</b>,
<br />
  <b>VBI_XDS_PROGRAM_CGMS</b>,
<br />
  <b>VBI_XDS_PROGRAM_ASPECT_RATIO</b>,
<br />
  <a class="el" href="group__XDSDemux.html#gga764e42b5ff94755be0eec8f009b5ce1da978fdffe96ff347f1a7de41ca3274043">VBI_XDS_PROGRAM_DATA</a> = 0x0C,
<br />
  <a class="el" href="group__XDSDemux.html#gga764e42b5ff94755be0eec8f009b5ce1dabcc6aab74fdea4f263b07d6fcfcc6c04">VBI_XDS_PROGRAM_MISC_DATA</a>,
<br />
  <b>VBI_XDS_PROGRAM_DESCRIPTION_BEGIN</b> = 0x10,
<br />
  <b>VBI_XDS_PROGRAM_DESCRIPTION_END</b> = 0x18
<br />
}</td></tr>
<tr class="memdesc:ga764e42b5ff94755be0eec8f009b5ce1d"><td class="mdescLeft"> </td><td class="mdescRight"><code>VBI_XDS_CLASS_CURRENT</code> and <code>VBI_XDS_CLASS_FUTURE</code> subclass. <a href="group__XDSDemux.html#ga764e42b5ff94755be0eec8f009b5ce1d">More...</a><br /></td></tr>
<tr class="separator:ga764e42b5ff94755be0eec8f009b5ce1d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab9db43be83b075b0d321cdb0b70ade9b"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#gab9db43be83b075b0d321cdb0b70ade9b">vbi_xds_subclass_channel</a> { <br />
  <b>VBI_XDS_CHANNEL_NAME</b> = 0x01,
<br />
  <b>VBI_XDS_CHANNEL_CALL_LETTERS</b>,
<br />
  <b>VBI_XDS_CHANNEL_TAPE_DELAY</b>,
<br />
  <a class="el" href="group__XDSDemux.html#ggab9db43be83b075b0d321cdb0b70ade9baeb0c7390eaecb759488dbe63f1bc3be8">VBI_XDS_CHANNEL_TSID</a>
<br />
}</td></tr>
<tr class="memdesc:gab9db43be83b075b0d321cdb0b70ade9b"><td class="mdescLeft"> </td><td class="mdescRight"><code>VBI_XDS_CLASS_CHANNEL</code> subclass. <a href="group__XDSDemux.html#gab9db43be83b075b0d321cdb0b70ade9b">More...</a><br /></td></tr>
<tr class="separator:gab9db43be83b075b0d321cdb0b70ade9b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga13c3033e14fcddc005218a1df2f2c60e"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#ga13c3033e14fcddc005218a1df2f2c60e">vbi_xds_subclass_misc</a> { <br />
  <b>VBI_XDS_TIME_OF_DAY</b> = 0x01,
<br />
  <b>VBI_XDS_IMPULSE_CAPTURE_ID</b>,
<br />
  <b>VBI_XDS_SUPPLEMENTAL_DATA_LOCATION</b>,
<br />
  <b>VBI_XDS_LOCAL_TIME_ZONE</b>,
<br />
  <a class="el" href="group__XDSDemux.html#gga13c3033e14fcddc005218a1df2f2c60eabd9abc69bc4042c7b7d82d292361e73f">VBI_XDS_OUT_OF_BAND_CHANNEL</a> = 0x40,
<br />
  <a class="el" href="group__XDSDemux.html#gga13c3033e14fcddc005218a1df2f2c60eae42f9efd102d24a4dbcb12b6b90737ed">VBI_XDS_CHANNEL_MAP_POINTER</a>,
<br />
  <a class="el" href="group__XDSDemux.html#gga13c3033e14fcddc005218a1df2f2c60ea2eeb0755a9406e2cc64c7d7b81cb2148">VBI_XDS_CHANNEL_MAP_HEADER</a>,
<br />
  <a class="el" href="group__XDSDemux.html#gga13c3033e14fcddc005218a1df2f2c60eab5c02b6e751b4f2ffdd1c901c17b46a5">VBI_XDS_CHANNEL_MAP</a>
<br />
}</td></tr>
<tr class="memdesc:ga13c3033e14fcddc005218a1df2f2c60e"><td class="mdescLeft"> </td><td class="mdescRight"><code>VBI_XDS_CLASS_MISC</code> subclass. <a href="group__XDSDemux.html#ga13c3033e14fcddc005218a1df2f2c60e">More...</a><br /></td></tr>
<tr class="separator:ga13c3033e14fcddc005218a1df2f2c60e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga36afd77b60d2282e584a261cdb3bef12"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#ga36afd77b60d2282e584a261cdb3bef12">vbi_xds_subclass_public_service</a> { <br />
  <b>VBI_XDS_WEATHER_BULLETIN</b> = 0x01,
<br />
  <b>VBI_XDS_WEATHER_MESSAGE</b>
<br />
}</td></tr>
<tr class="memdesc:ga36afd77b60d2282e584a261cdb3bef12"><td class="mdescLeft"> </td><td class="mdescRight"><code>VBI_XDS_CLASS_PUBLIC_SERVICE</code> subclass. <a href="group__XDSDemux.html#ga36afd77b60d2282e584a261cdb3bef12">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga599eebd6387c558c642134517284ceac"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#ga599eebd6387c558c642134517284ceac">vbi_xds_demux_reset</a> (<a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> *xd)</td></tr>
<tr class="separator:ga599eebd6387c558c642134517284ceac"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab46df46f3dfcc51c605a618ecbdac01f"><td class="memItemLeft" align="right" valign="top">vbi_bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#gab46df46f3dfcc51c605a618ecbdac01f">vbi_xds_demux_feed</a> (<a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> *xd, const uint8_t buffer[2])</td></tr>
<tr class="separator:gab46df46f3dfcc51c605a618ecbdac01f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga99411493fff962747c0ac1d3951cfdd4"><td class="memItemLeft" align="right" valign="top">vbi_bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#ga99411493fff962747c0ac1d3951cfdd4">vbi_xds_demux_feed_frame</a> (<a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> *xd, const <a class="el" href="structvbi__sliced.html">vbi_sliced</a> *sliced, unsigned int n_lines)</td></tr>
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<tr class="memitem:gabcc365131c37b0c31a8865d3e056fe29"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#gabcc365131c37b0c31a8865d3e056fe29">vbi_xds_demux_delete</a> (<a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> *xd)</td></tr>
<tr class="separator:gabcc365131c37b0c31a8865d3e056fe29"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga498a7d3ad192ada657541e58ce150a62"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new</a> (<a class="el" href="group__XDSDemux.html#gaa0dd8918645dc421d162de2f6cfb96fd">vbi_xds_demux_cb</a> *callback, void *user_data) _vbi_alloc</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Separating XDS data from a Closed Caption stream (EIA 608). </p>
<h2 class="groupheader">Typedef Documentation</h2>
<a class="anchor" id="gaccdbd208cea6c673ec3fa133d2e3f70e"></a>
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<td class="memname">typedef struct <a class="el" href="struct__vbi__xds__demux.html">_vbi_xds_demux</a> <a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>XDS demultiplexer. </p>
<p>The contents of this structure are private. Call <a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new()</a> to allocate a XDS demultiplexer. </p>
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<td class="memname">typedef vbi_bool vbi_xds_demux_cb(<a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> *xd, const <a class="el" href="structvbi__xds__packet.html">vbi_xds_packet</a> *xp, void *user_data)</td>
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</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">xd</td><td>XDS demultiplexer context allocated with <a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new()</a>. </td></tr>
<tr><td class="paramname">user_data</td><td>User data pointer given to <a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new()</a>. </td></tr>
<tr><td class="paramname">xp</td><td>Pointer to the received XDS data packet.</td></tr>
</table>
</dd>
</dl>
<p>The XDS demux calls a function of this type when an XDS packet has been completely received, all bytes have correct parity and the packet checksum is correct. Other packets are discarded.</p>
<dl class="section return"><dt>Returns</dt><dd>FALSE on error, will be returned by <a class="el" href="group__XDSDemux.html#gab46df46f3dfcc51c605a618ecbdac01f">vbi_xds_demux_feed()</a>. </dd></dl>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<td class="memname">enum <a class="el" href="group__XDSDemux.html#ga764e42b5ff94755be0eec8f009b5ce1d">vbi_xds_subclass_program</a></td>
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<p><code>VBI_XDS_CLASS_CURRENT</code> and <code>VBI_XDS_CLASS_FUTURE</code> subclass. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="gga764e42b5ff94755be0eec8f009b5ce1da978fdffe96ff347f1a7de41ca3274043"></a>VBI_XDS_PROGRAM_DATA </td><td class="fielddoc">
<dl class="section since"><dt>Since</dt><dd>0.2.17 </dd></dl>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga764e42b5ff94755be0eec8f009b5ce1dabcc6aab74fdea4f263b07d6fcfcc6c04"></a>VBI_XDS_PROGRAM_MISC_DATA </td><td class="fielddoc">
<dl class="section since"><dt>Since</dt><dd>0.2.17 </dd></dl>
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<td class="memname">enum <a class="el" href="group__XDSDemux.html#gab9db43be83b075b0d321cdb0b70ade9b">vbi_xds_subclass_channel</a></td>
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<p><code>VBI_XDS_CLASS_CHANNEL</code> subclass. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="ggab9db43be83b075b0d321cdb0b70ade9baeb0c7390eaecb759488dbe63f1bc3be8"></a>VBI_XDS_CHANNEL_TSID </td><td class="fielddoc">
<dl class="section since"><dt>Since</dt><dd>0.2.17 </dd></dl>
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<td class="memname">enum <a class="el" href="group__XDSDemux.html#ga13c3033e14fcddc005218a1df2f2c60e">vbi_xds_subclass_misc</a></td>
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<p><code>VBI_XDS_CLASS_MISC</code> subclass. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="gga13c3033e14fcddc005218a1df2f2c60eabd9abc69bc4042c7b7d82d292361e73f"></a>VBI_XDS_OUT_OF_BAND_CHANNEL </td><td class="fielddoc">
<dl class="section since"><dt>Since</dt><dd>0.2.17 </dd></dl>
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<tr><td class="fieldname"><a class="anchor" id="gga13c3033e14fcddc005218a1df2f2c60eae42f9efd102d24a4dbcb12b6b90737ed"></a>VBI_XDS_CHANNEL_MAP_POINTER </td><td class="fielddoc">
<dl class="section since"><dt>Since</dt><dd>0.2.17 </dd></dl>
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<tr><td class="fieldname"><a class="anchor" id="gga13c3033e14fcddc005218a1df2f2c60ea2eeb0755a9406e2cc64c7d7b81cb2148"></a>VBI_XDS_CHANNEL_MAP_HEADER </td><td class="fielddoc">
<dl class="section since"><dt>Since</dt><dd>0.2.17 </dd></dl>
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<tr><td class="fieldname"><a class="anchor" id="gga13c3033e14fcddc005218a1df2f2c60eab5c02b6e751b4f2ffdd1c901c17b46a5"></a>VBI_XDS_CHANNEL_MAP </td><td class="fielddoc">
<dl class="section since"><dt>Since</dt><dd>0.2.17 </dd></dl>
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<td class="memname">enum <a class="el" href="group__XDSDemux.html#ga36afd77b60d2282e584a261cdb3bef12">vbi_xds_subclass_public_service</a></td>
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<p><code>VBI_XDS_CLASS_PUBLIC_SERVICE</code> subclass. </p>
<dl class="section since"><dt>Since</dt><dd>0.2.17 </dd></dl>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">void vbi_xds_demux_reset </td>
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<td class="paramtype"><a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> * </td>
<td class="paramname"><em>xd</em></td><td>)</td>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">xd</td><td>XDS demultiplexer context allocated with <a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new()</a>.</td></tr>
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<p>Resets the XDS demux, useful for example after a channel change.</p>
<dl class="section since"><dt>Since</dt><dd>0.2.16 </dd></dl>
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<td class="memname">vbi_bool vbi_xds_demux_feed </td>
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<td class="paramtype"><a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> * </td>
<td class="paramname"><em>xd</em>, </td>
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<td class="paramtype">const uint8_t </td>
<td class="paramname"><em>buffer</em>[2] </td>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">xd</td><td>XDS demultiplexer context allocated with <a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new()</a>. </td></tr>
<tr><td class="paramname">buffer</td><td>Closed Caption character pair, as in struct <a class="el" href="structvbi__sliced.html" title="This structure holds one scan line of sliced vbi data. ">vbi_sliced</a>.</td></tr>
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<p>This function takes two successive bytes of a raw Closed Caption stream, filters out XDS data and calls the output function given to <a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new()</a> when a new packet is complete.</p>
<p>You should feed only data from NTSC line 284.</p>
<dl class="section return"><dt>Returns</dt><dd><code>FALSE</code> if the buffer contained parity errors.</dd></dl>
<dl class="section since"><dt>Since</dt><dd>0.2.16 </dd></dl>
<p>References <a class="el" href="structvbi__xds__packet.html#ac1cb91d00db77ade398dd004613e5af1">vbi_xds_packet::buffer</a>, <a class="el" href="structvbi__xds__packet.html#aefad46b11812684f8c68e52c708d35ed">vbi_xds_packet::buffer_size</a>, and <a class="el" href="group__Error.html#ga49d1cf6af476a4fa10c0312f373ac1a0">vbi_unpar8()</a>.</p>
<p>Referenced by <a class="el" href="group__XDSDemux.html#ga99411493fff962747c0ac1d3951cfdd4">vbi_xds_demux_feed_frame()</a>.</p>
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<td class="memname">vbi_bool vbi_xds_demux_feed_frame </td>
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<td class="paramtype"><a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> * </td>
<td class="paramname"><em>xd</em>, </td>
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<td class="paramtype">const <a class="el" href="structvbi__sliced.html">vbi_sliced</a> * </td>
<td class="paramname"><em>sliced</em>, </td>
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<td class="paramtype">unsigned int </td>
<td class="paramname"><em>n_lines</em> </td>
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<td>)</td>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">xd</td><td>XDS demultiplexer context allocated with <a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new()</a>. </td></tr>
<tr><td class="paramname">sliced</td><td>Sliced VBI data. </td></tr>
<tr><td class="paramname">n_lines</td><td>Number of lines in the <em>sliced</em> array.</td></tr>
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<p>This function works like <a class="el" href="group__XDSDemux.html#gab46df46f3dfcc51c605a618ecbdac01f">vbi_xds_demux_feed()</a> but operates on sliced VBI data and filters out <code>VBI_SLICED_CAPTION_525</code> on NTSC line 284.</p>
<dl class="section return"><dt>Returns</dt><dd><code>FALSE</code> if any of the Caption lines contained parity errors.</dd></dl>
<dl class="section since"><dt>Since</dt><dd>0.2.26 </dd></dl>
<p>References <a class="el" href="structvbi__sliced.html#aaec2527f9c9aada8be8519401ccafb48">vbi_sliced::data</a>, <a class="el" href="structvbi__sliced.html#add8a7578942158880b5e3472adcd5eed">vbi_sliced::id</a>, <a class="el" href="structvbi__sliced.html#a72fee7fa9e5be3767e0dbd91f68d4633">vbi_sliced::line</a>, and <a class="el" href="group__XDSDemux.html#gab46df46f3dfcc51c605a618ecbdac01f">vbi_xds_demux_feed()</a>.</p>
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<td class="memname">void vbi_xds_demux_delete </td>
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<td class="paramtype"><a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a> * </td>
<td class="paramname"><em>xd</em></td><td>)</td>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">xd</td><td>XDS demultiplexer context allocated with <a class="el" href="group__XDSDemux.html#ga498a7d3ad192ada657541e58ce150a62">vbi_xds_demux_new()</a>, can be <code>NULL</code>.</td></tr>
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<p>Frees all resources associated with <em>xd</em>.</p>
<dl class="section since"><dt>Since</dt><dd>0.2.16 </dd></dl>
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<td class="memname"><a class="el" href="group__XDSDemux.html#gaccdbd208cea6c673ec3fa133d2e3f70e">vbi_xds_demux</a>* vbi_xds_demux_new </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__XDSDemux.html#gaa0dd8918645dc421d162de2f6cfb96fd">vbi_xds_demux_cb</a> * </td>
<td class="paramname"><em>callback</em>, </td>
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<td class="paramtype">void * </td>
<td class="paramname"><em>user_data</em> </td>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">callback</td><td>Function to be called by <a class="el" href="group__XDSDemux.html#gab46df46f3dfcc51c605a618ecbdac01f">vbi_xds_demux_feed()</a> when a new packet is available. </td></tr>
<tr><td class="paramname">user_data</td><td>User pointer passed through to <em>callback</em> function.</td></tr>
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<p>Allocates a new Extended Data Service (EIA 608) demultiplexer.</p>
<dl class="section return"><dt>Returns</dt><dd>Pointer to newly allocated XDS demux context which must be freed with <a class="el" href="group__XDSDemux.html#gabcc365131c37b0c31a8865d3e056fe29">vbi_xds_demux_delete()</a> when done. <code>NULL</code> on failure (out of memory).</dd></dl>
<dl class="section since"><dt>Since</dt><dd>0.2.16 </dd></dl>
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