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 <h2><span class="refentrytitle"><a name="GstElementFactory.top_of_page"></a>GstElementFactory</span></h2>
 <p>GstElementFactory — Create GstElements from a factory</p>
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 <div class="refsynopsisdiv">
 <a name="GstElementFactory.synopsis"></a><h2>Synopsis</h2>
 <pre class="synopsis">
 #include &lt;gst/gst.h&gt;

                     <a class="link" href="GstElementFactory.html#GstElementFactory-struct" title="GstElementFactory">GstElementFactory</a>;
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="GstElementFactory.html#gst-element-register" title="gst_element_register ()">gst_element_register</a>                (<em class="parameter"><code><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> rank</code></em>,
                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);
 <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="returnvalue">GstElementFactory</span></a> * <a class="link" href="GstElementFactory.html#gst-element-factory-find" title="gst_element_factory_find ()">gst_element_factory_find</a>            (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
 <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="returnvalue">GType</span></a>               <a class="link" href="GstElementFactory.html#gst-element-factory-get-element-type" title="gst_element_factory_get_element_type ()">gst_element_factory_get_element_type</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);
 const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *       <a class="link" href="GstElementFactory.html#gst-element-factory-get-metadata" title="gst_element_factory_get_metadata ()">gst_element_factory_get_metadata</a>    (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *key</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **            <a class="link" href="GstElementFactory.html#gst-element-factory-get-metadata-keys" title="gst_element_factory_get_metadata_keys ()">gst_element_factory_get_metadata_keys</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>               <a class="link" href="GstElementFactory.html#gst-element-factory-get-num-pad-templates" title="gst_element_factory_get_num_pad_templates ()">gst_element_factory_get_num_pad_templates</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);
 <a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType"><span class="returnvalue">GstURIType</span></a>          <a class="link" href="GstElementFactory.html#gst-element-factory-get-uri-type" title="gst_element_factory_get_uri_type ()">gst_element_factory_get_uri_type</a>    (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);
 const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * const * <a class="link" href="GstElementFactory.html#gst-element-factory-get-uri-protocols" title="gst_element_factory_get_uri_protocols ()">gst_element_factory_get_uri_protocols</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="GstElementFactory.html#gst-element-factory-has-interface" title="gst_element_factory_has_interface ()">gst_element_factory_has_interface</a>   (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *interfacename</code></em>);
 <a class="link" href="GstElement.html" title="GstElement"><span class="returnvalue">GstElement</span></a> *        <a class="link" href="GstElementFactory.html#gst-element-factory-create" title="gst_element_factory_create ()">gst_element_factory_create</a>          (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
 <a class="link" href="GstElement.html" title="GstElement"><span class="returnvalue">GstElement</span></a> *        <a class="link" href="GstElementFactory.html#gst-element-factory-make" title="gst_element_factory_make ()">gst_element_factory_make</a>            (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *factoryname</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="GstElementFactory.html#gst-element-factory-can-sink-all-caps" title="gst_element_factory_can_sink_all_caps ()">gst_element_factory_can_sink_all_caps</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="GstElementFactory.html#gst-element-factory-can-src-all-caps" title="gst_element_factory_can_src_all_caps ()">gst_element_factory_can_src_all_caps</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="GstElementFactory.html#gst-element-factory-can-sink-any-caps" title="gst_element_factory_can_sink_any_caps ()">gst_element_factory_can_sink_any_caps</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="GstElementFactory.html#gst-element-factory-can-src-any-caps" title="gst_element_factory_can_src_any_caps ()">gst_element_factory_can_src_any_caps</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);
 const <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *       <a class="link" href="GstElementFactory.html#gst-element-factory-get-static-pad-templates" title="gst_element_factory_get_static_pad_templates ()">gst_element_factory_get_static_pad_templates</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);
 typedef             <a class="link" href="GstElementFactory.html#GstElementFactoryListType" title="GstElementFactoryListType">GstElementFactoryListType</a>;
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-ANY:CAPS" title="GST_ELEMENT_FACTORY_TYPE_ANY">GST_ELEMENT_FACTORY_TYPE_ANY</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-AUDIOVIDEO-SINKS:CAPS" title="GST_ELEMENT_FACTORY_TYPE_AUDIOVIDEO_SINKS">GST_ELEMENT_FACTORY_TYPE_AUDIOVIDEO_SINKS</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-AUDIO-ENCODER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_AUDIO_ENCODER">GST_ELEMENT_FACTORY_TYPE_AUDIO_ENCODER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-DECODABLE:CAPS" title="GST_ELEMENT_FACTORY_TYPE_DECODABLE">GST_ELEMENT_FACTORY_TYPE_DECODABLE</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-DECODER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_DECODER">GST_ELEMENT_FACTORY_TYPE_DECODER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-DEMUXER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_DEMUXER">GST_ELEMENT_FACTORY_TYPE_DEMUXER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-DEPAYLOADER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_DEPAYLOADER">GST_ELEMENT_FACTORY_TYPE_DEPAYLOADER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-ENCODER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_ENCODER">GST_ELEMENT_FACTORY_TYPE_ENCODER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-FORMATTER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_FORMATTER">GST_ELEMENT_FACTORY_TYPE_FORMATTER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-MAX-ELEMENTS:CAPS" title="GST_ELEMENT_FACTORY_TYPE_MAX_ELEMENTS">GST_ELEMENT_FACTORY_TYPE_MAX_ELEMENTS</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-MEDIA-AUDIO:CAPS" title="GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO">GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-MEDIA-IMAGE:CAPS" title="GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE">GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-MEDIA-METADATA:CAPS" title="GST_ELEMENT_FACTORY_TYPE_MEDIA_METADATA">GST_ELEMENT_FACTORY_TYPE_MEDIA_METADATA</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-MEDIA-SUBTITLE:CAPS" title="GST_ELEMENT_FACTORY_TYPE_MEDIA_SUBTITLE">GST_ELEMENT_FACTORY_TYPE_MEDIA_SUBTITLE</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-MEDIA-VIDEO:CAPS" title="GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO">GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-MEDIA-ANY:CAPS" title="GST_ELEMENT_FACTORY_TYPE_MEDIA_ANY">GST_ELEMENT_FACTORY_TYPE_MEDIA_ANY</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-MUXER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_MUXER">GST_ELEMENT_FACTORY_TYPE_MUXER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-PARSER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_PARSER">GST_ELEMENT_FACTORY_TYPE_PARSER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-PAYLOADER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_PAYLOADER">GST_ELEMENT_FACTORY_TYPE_PAYLOADER</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-SINK:CAPS" title="GST_ELEMENT_FACTORY_TYPE_SINK">GST_ELEMENT_FACTORY_TYPE_SINK</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-SRC:CAPS" title="GST_ELEMENT_FACTORY_TYPE_SRC">GST_ELEMENT_FACTORY_TYPE_SRC</a>
 #define             <a class="link" href="GstElementFactory.html#GST-ELEMENT-FACTORY-TYPE-VIDEO-ENCODER:CAPS" title="GST_ELEMENT_FACTORY_TYPE_VIDEO_ENCODER">GST_ELEMENT_FACTORY_TYPE_VIDEO_ENCODER</a>
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *             <a class="link" href="GstElementFactory.html#gst-element-factory-list-filter" title="gst_element_factory_list_filter ()">gst_element_factory_list_filter</a>     (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> *list</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                                                          <em class="parameter"><code><a class="link" href="GstPad.html#GstPadDirection" title="enum GstPadDirection"><span class="type">GstPadDirection</span></a> direction</code></em>,
                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> subsetonly</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *             <a class="link" href="GstElementFactory.html#gst-element-factory-list-get-elements" title="gst_element_factory_list_get_elements ()">gst_element_factory_list_get_elements</a>
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html#GstElementFactoryListType" title="GstElementFactoryListType"><span class="type">GstElementFactoryListType</span></a> type</code></em>,
                                                          <em class="parameter"><code><a class="link" href="GstPluginFeature.html#GstRank" title="enum GstRank"><span class="type">GstRank</span></a> minrank</code></em>);
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="GstElementFactory.html#gst-element-factory-list-is-type" title="gst_element_factory_list_is_type ()">gst_element_factory_list_is_type</a>    (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code><a class="link" href="GstElementFactory.html#GstElementFactoryListType" title="GstElementFactoryListType"><span class="type">GstElementFactoryListType</span></a> type</code></em>);
 </pre>
 </div>
 <div class="refsect1">
 <a name="GstElementFactory.object-hierarchy"></a><h2>Object Hierarchy</h2>
 <pre class="synopsis">
   <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    +----<a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
          +----<a class="link" href="GstObject.html" title="GstObject">GstObject</a>
                +----<a class="link" href="GstPluginFeature.html" title="GstPluginFeature">GstPluginFeature</a>
                      +----GstElementFactory
 </pre>
 </div>
 <div class="refsect1">
 <a name="GstElementFactory.description"></a><h2>Description</h2>
 <p>
 <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> is used to create instances of elements. A
 GstElementfactory can be added to a <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> as it is also a
 <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a>.
 </p>
 <p>
 Use the <a class="link" href="GstElementFactory.html#gst-element-factory-find" title="gst_element_factory_find ()"><code class="function">gst_element_factory_find()</code></a> and <a class="link" href="GstElementFactory.html#gst-element-factory-create" title="gst_element_factory_create ()"><code class="function">gst_element_factory_create()</code></a>
 functions to create element instances or use <a class="link" href="GstElementFactory.html#gst-element-factory-make" title="gst_element_factory_make ()"><code class="function">gst_element_factory_make()</code></a> as a
 convenient shortcut.
 </p>
 <p>
 The following code example shows you how to create a GstFileSrc element.
 </p>
 <p>
 </p>
 <div class="example">
 <a name="idp15442560"></a><p class="title"><b>Example 6. Using an element factory</b></p>
 <div class="example-contents">
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     <tbody>
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         <td class="listing_lines" align="right"><pre>1
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         <td class="listing_code"><pre class="programlisting"><span class="gtkdoc ppc">#include &lt;gst/gst.h&gt;</span>

 GstElement <span class="gtkdoc opt">*</span>src<span class="gtkdoc opt">;</span>
 GstElementFactory <span class="gtkdoc opt">*</span>srcfactory<span class="gtkdoc opt">;</span>

 <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-Gst.html#gst-init">gst_init</a></span> <span class="gtkdoc opt">(&amp;</span>argc<span class="gtkdoc opt">, &amp;</span>argv<span class="gtkdoc opt">);</span>

 srcfactory <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElementFactory.html#gst-element-factory-find">gst_element_factory_find</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;filesrc&quot;</span><span class="gtkdoc opt">);</span>
 <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Warnings-and-Assertions.html#g-return-if-fail">g_return_if_fail</a></span> <span class="gtkdoc opt">(</span>srcfactory <span class="gtkdoc opt">!=</span> NULL<span class="gtkdoc opt">);</span>
 src <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElementFactory.html#gst-element-factory-create">gst_element_factory_create</a></span> <span class="gtkdoc opt">(</span>srcfactory<span class="gtkdoc opt">,</span> <span class="string">&quot;src&quot;</span><span class="gtkdoc opt">);</span>
 <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Warnings-and-Assertions.html#g-return-if-fail">g_return_if_fail</a></span> <span class="gtkdoc opt">(</span>src <span class="gtkdoc opt">!=</span> NULL<span class="gtkdoc opt">);</span>
 <span class="gtkdoc opt">...</span></pre></td>
       </tr>
     </tbody>
   </table>
 </div>

 </div>
 <p><br class="example-break">
 </p>
 <p>
 Last reviewed on 2005-11-23 (0.9.5)
 </p>
 </div>
 <div class="refsect1">
 <a name="GstElementFactory.details"></a><h2>Details</h2>
 <div class="refsect2">
 <a name="GstElementFactory-struct"></a><h3>GstElementFactory</h3>
 <pre class="programlisting">typedef struct _GstElementFactory GstElementFactory;</pre>
 <p>
 The opaque <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> data structure.
 </p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-register"></a><h3>gst_element_register ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_element_register                (<em class="parameter"><code><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> rank</code></em>,
                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre>
 <p>
 Create a new elementfactory capable of instantiating objects of the
 <em class="parameter"><code>type</code></em> and add the factory to <em class="parameter"><code>plugin</code></em>.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>plugin</code></em> :</span></p></td>
 <td>
 <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> to register the element with, or NULL for
 a static element. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 <td>name of elements of this type</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>rank</code></em> :</span></p></td>
 <td>rank of element (higher rank means more importance when autoplugging)</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td>
 <td>GType of element to register</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>TRUE, if the registering succeeded, FALSE on error</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-find"></a><h3>gst_element_factory_find ()</h3>
 <pre class="programlisting"><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="returnvalue">GstElementFactory</span></a> * gst_element_factory_find            (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 <p>
 Search for an element factory of the given name. Refs the returned
 element factory; caller is responsible for unreffing.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 <td>name of factory to find</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>
 <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> if found, NULL otherwise. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-get-element-type"></a><h3>gst_element_factory_get_element_type ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="returnvalue">GType</span></a>               gst_element_factory_get_element_type
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);</pre>
 <p>
 Get the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> for elements managed by this factory. The type can
 only be retrieved if the element factory is loaded, which can be
 assured with <a class="link" href="GstPluginFeature.html#gst-plugin-feature-load" title="gst_plugin_feature_load ()"><code class="function">gst_plugin_feature_load()</code></a>.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>factory to get managed <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> from</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> for elements managed by this factory or 0 if
 the factory is not loaded.</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-get-metadata"></a><h3>gst_element_factory_get_metadata ()</h3>
 <pre class="programlisting">const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *       gst_element_factory_get_metadata    (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *key</code></em>);</pre>
 <p>
 Get the metadata on <em class="parameter"><code>factory</code></em> with <em class="parameter"><code>key</code></em>.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>key</code></em> :</span></p></td>
 <td>a key</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>the metadata with <em class="parameter"><code>key</code></em> on <em class="parameter"><code>factory</code></em> or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> when there was no
 metadata with the given <em class="parameter"><code>key</code></em>.</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-get-metadata-keys"></a><h3>gst_element_factory_get_metadata_keys ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **            gst_element_factory_get_metadata_keys
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);</pre>
 <p>
 Get the available keys for the metadata on <em class="parameter"><code>factory</code></em>.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>a <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated array of key strings, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> when there is no
 metadata. Free with <a href="http://library.gnome.org/devel/glib/unstable/glib-String-Utility-Functions.html#g-strfreev"><code class="function">g_strfreev()</code></a> when no longer needed. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> utf8][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-get-num-pad-templates"></a><h3>gst_element_factory_get_num_pad_templates ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>               gst_element_factory_get_num_pad_templates
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);</pre>
 <p>
 Gets the number of pad_templates in this factory.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>the number of pad_templates</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-get-uri-type"></a><h3>gst_element_factory_get_uri_type ()</h3>
 <pre class="programlisting"><a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType"><span class="returnvalue">GstURIType</span></a>          gst_element_factory_get_uri_type    (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);</pre>
 <p>
 Gets the type of URIs the element supports or <a class="link" href="gstreamer-GstUriHandler.html#GST-URI-UNKNOWN:CAPS"><span class="type">GST_URI_UNKNOWN</span></a> if none.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>type of URIs this element supports</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-get-uri-protocols"></a><h3>gst_element_factory_get_uri_protocols ()</h3>
 <pre class="programlisting">const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * const * gst_element_factory_get_uri_protocols
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);</pre>
 <p>
 Gets a NULL-terminated array of protocols this element supports or NULL if
 no protocols are supported. You may not change the contents of the returned
 array, as it is still owned by the element factory. Use <a href="http://library.gnome.org/devel/glib/unstable/glib-String-Utility-Functions.html#g-strdupv"><code class="function">g_strdupv()</code></a> to
 make a copy of the protocol string array if you need to.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>the supported protocols
 or NULL. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-has-interface"></a><h3>gst_element_factory_has_interface ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_element_factory_has_interface   (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *interfacename</code></em>);</pre>
 <p>
 Check if <em class="parameter"><code>factory</code></em> implements the interface with name <em class="parameter"><code>interfacename</code></em>.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>interfacename</code></em> :</span></p></td>
 <td>an interface name</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><span class="type">TRUE</span></a> when <em class="parameter"><code>factory</code></em> implement the interface.</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-create"></a><h3>gst_element_factory_create ()</h3>
 <pre class="programlisting"><a class="link" href="GstElement.html" title="GstElement"><span class="returnvalue">GstElement</span></a> *        gst_element_factory_create          (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 <p>
 Create a new element of the type defined by the given elementfactory.
 It will be given the name supplied, since all elements require a name as
 their first argument.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>factory to instantiate</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 <td>name of new element, or NULL to automatically create
 a unique name. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>new <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a> or NULL if the element couldn't
 be created. <span class="annotation">[transfer floating]</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-make"></a><h3>gst_element_factory_make ()</h3>
 <pre class="programlisting"><a class="link" href="GstElement.html" title="GstElement"><span class="returnvalue">GstElement</span></a> *        gst_element_factory_make            (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *factoryname</code></em>,
                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 <p>
 Create a new element of the type defined by the given element factory.
 If name is NULL, then the element will receive a guaranteed unique name,
 consisting of the element factory name and a number.
 If name is given, it will be given the name supplied.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factoryname</code></em> :</span></p></td>
 <td>a named factory to instantiate</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 <td>name of new element, or NULL to automatically create
 a unique name. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>new <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a> or NULL if unable to create element. <span class="annotation">[transfer floating]</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-can-sink-all-caps"></a><h3>gst_element_factory_can_sink_all_caps ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_element_factory_can_sink_all_caps
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
 <p>
 Checks if the factory can sink all possible capabilities.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>factory to query</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
 <td>the caps to check</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the caps are fully compatible.</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-can-src-all-caps"></a><h3>gst_element_factory_can_src_all_caps ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_element_factory_can_src_all_caps
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
 <p>
 Checks if the factory can src all possible capabilities.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>factory to query</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
 <td>the caps to check</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the caps are fully compatible.</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-can-sink-any-caps"></a><h3>gst_element_factory_can_sink_any_caps ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_element_factory_can_sink_any_caps
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
 <p>
 Checks if the factory can sink any possible capability.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>factory to query</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
 <td>the caps to check</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the caps have a common subset.</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-can-src-any-caps"></a><h3>gst_element_factory_can_src_any_caps ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_element_factory_can_src_any_caps
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
 <p>
 Checks if the factory can src any possible capability.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>factory to query</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
 <td>the caps to check</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the caps have a common subset.</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-get-static-pad-templates"></a><h3>gst_element_factory_get_static_pad_templates ()</h3>
 <pre class="programlisting">const <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *       gst_element_factory_get_static_pad_templates
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>);</pre>
 <p>
 Gets the <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of <a class="link" href="GstPadTemplate.html#GstStaticPadTemplate" title="struct GstStaticPadTemplate"><span class="type">GstStaticPadTemplate</span></a> for this factory.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>the
 static pad templates. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.StaticPadTemplate]</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GstElementFactoryListType"></a><h3>GstElementFactoryListType</h3>
 <pre class="programlisting">typedef guint64 GstElementFactoryListType;
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-ANY:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_ANY</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_ANY ((G_GUINT64_CONSTANT (1) &lt;&lt; 49) - 1)
 </pre>
 <p>
 Elements of any of the defined GST_ELEMENT_FACTORY_LIST types
 </p>
 <p>
 Value: 562949953421311
 Type: GstElementFactoryListType
 </p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-AUDIOVIDEO-SINKS:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_AUDIOVIDEO_SINKS</h3>
 <pre class="programlisting">#define GST_ELEMENT_FACTORY_TYPE_AUDIOVIDEO_SINKS (GST_ELEMENT_FACTORY_TYPE_SINK | GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO | GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO | GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE)
 </pre>
 <p>
 All sinks handling audio, video or image media types
 </p>
 <p>
 Value: 3940649673949188
 Type: GstElementFactoryListType
 </p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-AUDIO-ENCODER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_AUDIO_ENCODER</h3>
 <pre class="programlisting">#define GST_ELEMENT_FACTORY_TYPE_AUDIO_ENCODER (GST_ELEMENT_FACTORY_TYPE_ENCODER | GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO)
 </pre>
 <p>
 All encoders handling audio media types
 </p>
 <p>
 Value: 1125899906842626
 Type: GstElementFactoryListType
 </p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-DECODABLE:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_DECODABLE</h3>
 <pre class="programlisting">#define             GST_ELEMENT_FACTORY_TYPE_DECODABLE</pre>
 <p>
 All elements used to 'decode' streams (decoders, demuxers, parsers, depayloaders)
 </p>
 <p>
 Value: 353
 Type: GstElementFactoryListType
 </p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-DECODER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_DECODER</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_DECODER        (G_GUINT64_CONSTANT (1) &lt;&lt; 0)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-DEMUXER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_DEMUXER</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_DEMUXER        (G_GUINT64_CONSTANT (1) &lt;&lt; 5)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-DEPAYLOADER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_DEPAYLOADER</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_DEPAYLOADER    (G_GUINT64_CONSTANT (1) &lt;&lt; 8)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-ENCODER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_ENCODER</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_ENCODER        (G_GUINT64_CONSTANT (1) &lt;&lt; 1)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-FORMATTER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_FORMATTER</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_FORMATTER      (G_GUINT64_CONSTANT (1) &lt;&lt; 9)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-MAX-ELEMENTS:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_MAX_ELEMENTS</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_MAX_ELEMENTS   (G_GUINT64_CONSTANT (1) &lt;&lt; 48)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-MEDIA-AUDIO:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_MEDIA_AUDIO    (G_GUINT64_CONSTANT (1) &lt;&lt; 50)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-MEDIA-IMAGE:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE    (G_GUINT64_CONSTANT (1) &lt;&lt; 51)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-MEDIA-METADATA:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_MEDIA_METADATA</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_MEDIA_METADATA (G_GUINT64_CONSTANT (1) &lt;&lt; 53)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-MEDIA-SUBTITLE:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_MEDIA_SUBTITLE</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_MEDIA_SUBTITLE (G_GUINT64_CONSTANT (1) &lt;&lt; 52)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-MEDIA-VIDEO:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO    (G_GUINT64_CONSTANT (1) &lt;&lt; 49)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-MEDIA-ANY:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_MEDIA_ANY</h3>
 <pre class="programlisting">#define GST_ELEMENT_FACTORY_TYPE_MEDIA_ANY (~G_GUINT64_CONSTANT (0) &lt;&lt; 48)
 </pre>
 <p>
 Elements matching any of the defined GST_ELEMENT_FACTORY_TYPE_MEDIA types
 </p>
 <p>
 Note: Do not use this if you wish to not filter against any of the defined
 media types. If you wish to do this, simply don't specify any
 GST_ELEMENT_FACTORY_TYPE_MEDIA flag.
 </p>
 <p>
 Value: 18446462598732840960
 Type: GstElementFactoryListType
 </p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-MUXER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_MUXER</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_MUXER          (G_GUINT64_CONSTANT (1) &lt;&lt; 4)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-PARSER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_PARSER</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_PARSER         (G_GUINT64_CONSTANT (1) &lt;&lt; 6)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-PAYLOADER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_PAYLOADER</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_PAYLOADER      (G_GUINT64_CONSTANT (1) &lt;&lt; 7)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-SINK:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_SINK</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_SINK           (G_GUINT64_CONSTANT (1) &lt;&lt; 2)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-SRC:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_SRC</h3>
 <pre class="programlisting">#define  GST_ELEMENT_FACTORY_TYPE_SRC            (G_GUINT64_CONSTANT (1) &lt;&lt; 3)
 </pre>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-ELEMENT-FACTORY-TYPE-VIDEO-ENCODER:CAPS"></a><h3>GST_ELEMENT_FACTORY_TYPE_VIDEO_ENCODER</h3>
 <pre class="programlisting">#define GST_ELEMENT_FACTORY_TYPE_VIDEO_ENCODER (GST_ELEMENT_FACTORY_TYPE_ENCODER | GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO | GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE)
 </pre>
 <p>
 All encoders handling video or image media types
 </p>
 <p>
 Value: 2814749767106562
 Type: GstElementFactoryListType
 </p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-list-filter"></a><h3>gst_element_factory_list_filter ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *             gst_element_factory_list_filter     (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> *list</code></em>,
                                                          <em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                                                          <em class="parameter"><code><a class="link" href="GstPad.html#GstPadDirection" title="enum GstPadDirection"><span class="type">GstPadDirection</span></a> direction</code></em>,
                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> subsetonly</code></em>);</pre>
 <p>
 Filter out all the elementfactories in <em class="parameter"><code>list</code></em> that can handle <em class="parameter"><code>caps</code></em> in
 the given direction.
 </p>
 <p>
 If <em class="parameter"><code>subsetonly</code></em> is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, then only the elements whose pads templates
 are a complete superset of <em class="parameter"><code>caps</code></em> will be returned. Else any element
 whose pad templates caps can intersect with <em class="parameter"><code>caps</code></em> will be returned.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>list</code></em> :</span></p></td>
 <td>a <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of
 <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> to filter. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.ElementFactory]</span>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
 <td>a <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>direction</code></em> :</span></p></td>
 <td>a <a class="link" href="GstPad.html#GstPadDirection" title="enum GstPadDirection"><span class="type">GstPadDirection</span></a> to filter on</td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>subsetonly</code></em> :</span></p></td>
 <td>whether to filter on caps subsets or not.</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>a <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of
 <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> elements that match the given requisits.
 Use <a class="link" href="GstPluginFeature.html#gst-plugin-feature-list-free" title="gst_plugin_feature_list_free ()"><span class="type">gst_plugin_feature_list_free</span></a> after usage. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.ElementFactory]</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-list-get-elements"></a><h3>gst_element_factory_list_get_elements ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *             gst_element_factory_list_get_elements
                                                         (<em class="parameter"><code><a class="link" href="GstElementFactory.html#GstElementFactoryListType" title="GstElementFactoryListType"><span class="type">GstElementFactoryListType</span></a> type</code></em>,
                                                          <em class="parameter"><code><a class="link" href="GstPluginFeature.html#GstRank" title="enum GstRank"><span class="type">GstRank</span></a> minrank</code></em>);</pre>
 <p>
 Get a list of factories that match the given <em class="parameter"><code>type</code></em>. Only elements
 with a rank greater or equal to <em class="parameter"><code>minrank</code></em> will be returned.
 The list of factories is returned by decreasing rank.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html#GstElementFactoryListType" title="GstElementFactoryListType"><span class="type">GstElementFactoryListType</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>minrank</code></em> :</span></p></td>
 <td>Minimum rank</td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>a <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of
 <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> elements. Use <a class="link" href="GstPluginFeature.html#gst-plugin-feature-list-free" title="gst_plugin_feature_list_free ()"><code class="function">gst_plugin_feature_list_free()</code></a> after
 usage. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.ElementFactory]</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-element-factory-list-is-type"></a><h3>gst_element_factory_list_is_type ()</h3>
 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_element_factory_list_is_type    (<em class="parameter"><code><a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a> *factory</code></em>,
                                                          <em class="parameter"><code><a class="link" href="GstElementFactory.html#GstElementFactoryListType" title="GstElementFactoryListType"><span class="type">GstElementFactoryListType</span></a> type</code></em>);</pre>
 <p>
 Check if <em class="parameter"><code>factory</code></em> is of the given types.
 </p>
 <div class="variablelist"><table border="0">
 <col align="left" valign="top">
 <tbody>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>factory</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html" title="GstElementFactory"><span class="type">GstElementFactory</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td>
 <td>a <a class="link" href="GstElementFactory.html#GstElementFactoryListType" title="GstElementFactoryListType"><span class="type">GstElementFactoryListType</span></a>
 </td>
 </tr>
 <tr>
 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 <td>
 <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>factory</code></em> is of <em class="parameter"><code>type</code></em>.</td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <div class="refsect1">
 <a name="GstElementFactory.see-also"></a><h2>See Also</h2>
 <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a>, <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a>, <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a>, <a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a>.
 </div>
 </div>
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 <hr>
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