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<title>GStreamer Base Plugins 1.0 Library Reference Manual: gsttagxmp</title>
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<a name="gst-plugins-base-libs-gsttagxmp"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gsttagxmp.top_of_page"></a>gsttagxmp</span></h2>
<p>gsttagxmp — tag mappings and support functions for plugins
dealing with xmp packets</p>
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<div class="refsect1">
<a name="gst-plugins-base-libs-gsttagxmp.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstTagList.html#GstTagList"><span class="returnvalue">GstTagList</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gsttagxmp.html#gst-tag-list-from-xmp-buffer" title="gst_tag_list_from_xmp_buffer ()">gst_tag_list_from_xmp_buffer</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstBuffer.html#GstBuffer"><span class="returnvalue">GstBuffer</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gsttagxmp.html#gst-tag-list-to-xmp-buffer" title="gst_tag_list_to_xmp_buffer ()">gst_tag_list_to_xmp_buffer</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gsttagxmp.html#gst-tag-xmp-list-schemas" title="gst_tag_xmp_list_schemas ()">gst_tag_xmp_list_schemas</a> <span class="c_punctuation">()</span>
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<div class="refsect1">
<a name="gst-plugins-base-libs-gsttagxmp.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttagxmp.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gst/tag/tag.h>
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttagxmp.description"></a><h2>Description</h2>
<p>Contains various utility functions for plugins to parse or create
xmp packets and map them to and from <a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstTagList.html#GstTagList"><span class="type">GstTagList</span></a>s.</p>
<p>Please note that the xmp parser is very lightweight and not strict at all.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttagxmp.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-tag-list-from-xmp-buffer"></a><h3>gst_tag_list_from_xmp_buffer ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstTagList.html#GstTagList"><span class="returnvalue">GstTagList</span></a> *
gst_tag_list_from_xmp_buffer (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>);</pre>
<p>Parse a xmp packet into a taglist.</p>
<div class="refsect3">
<a name="id-1.2.12.7.7.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p>buffer</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.12.7.7.2.6"></a><h4>Returns</h4>
<p> new taglist or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, free the list when done</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tag-list-to-xmp-buffer"></a><h3>gst_tag_list_to_xmp_buffer ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstBuffer.html#GstBuffer"><span class="returnvalue">GstBuffer</span></a> *
gst_tag_list_to_xmp_buffer (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstTagList.html#GstTagList"><span class="type">GstTagList</span></a> *list</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> read_only</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> **schemas</code></em>);</pre>
<p>Formats a taglist as a xmp packet using only the selected
schemas. An empty list (<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>) means that all schemas should
be used</p>
<div class="refsect3">
<a name="id-1.2.12.7.7.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>list</p></td>
<td class="parameter_description"><p>tags</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>read_only</p></td>
<td class="parameter_description"><p>does the container forbid inplace editing</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>schemas</p></td>
<td class="parameter_description"><p><a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated array of schemas to be used on serialization</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.12.7.7.3.6"></a><h4>Returns</h4>
<p> new buffer or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, unref the buffer when done</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tag-xmp-list-schemas"></a><h3>gst_tag_xmp_list_schemas ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **
gst_tag_xmp_list_schemas (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Gets the list of supported schemas in the xmp lib</p>
<div class="refsect3">
<a name="id-1.2.12.7.7.4.5"></a><h4>Returns</h4>
<p> a <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated array of strings with the
schema names. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttagxmp.other_details"></a><h2>Types and Values</h2>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttagxmp.see-also"></a><h2>See Also</h2>
<p><a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstTagList.html#GstTagList"><span class="type">GstTagList</span></a></p>
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