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<a name="gstreamer-plugins-typefind"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gstreamer-plugins-typefind.top_of_page"></a>typefind</span></h2>
<p>typefind</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gstreamer-plugins-typefind.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type">
<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstCaps.html"><span class="type">GstCaps</span></a> *</td>
<td class="property_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement--caps" title="The “caps” property">caps</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type">
<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstCaps.html"><span class="type">GstCaps</span></a> *</td>
<td class="property_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement--force-caps" title="The “force-caps” property">force-caps</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement--minimum" title="The “minimum” property">minimum</a></td>
<td class="property_flags">Read / Write</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-plugins-typefind.signals"></a><h2>Signals</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody><tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement-have-type" title="The “have-type” signal">have-type</a></td>
<td class="signal_flags"><a href="https://developer.gnome.org/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr></tbody>
</table></div>
</div>
<a name="GstTypeFindElement"></a><div class="refsect1">
<a name="gstreamer-plugins-typefind.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement-struct" title="struct GstTypeFindElement">GstTypeFindElement</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-plugins-typefind.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
<span class="lineart">╰──</span> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
<span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a>
<span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a>
<span class="lineart">╰──</span> GstTypeFindElement
</pre>
</div>
<div class="refsect1">
<a name="gstreamer-plugins-typefind.description"></a><h2>Description</h2>
<p>Determines the media-type of a stream. It applies typefind functions in the
order of their rank. Once the type has been detected it sets its src pad caps
to the found media type.</p>
<p>Whenever a type is found the <a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement-have-type" title="The “have-type” signal"><span class="type">“have-type”</span></a> signal is
emitted, either from the streaming thread or the application thread
(the latter may happen when typefinding is done pull-based from the
state change function).</p>
<p>Plugins can register custom typefinders by using <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstTypeFindFactory.html"><span class="type">GstTypeFindFactory</span></a>.</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.18.8.5.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
<a class="link" href="gstreamer-plugins-plugin-coreelements.html#plugin-coreelements">coreelements</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Benjamin Otte &lt;in7y118@public.uni-hamburg.de&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Generic</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.18.8.5.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>ANY</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>ANY</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gstreamer-plugins-typefind.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gstreamer-plugins-typefind.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstTypeFindElement-struct"></a><h3>struct GstTypeFindElement</h3>
<pre class="programlisting">struct GstTypeFindElement;</pre>
<p>Opaque <a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement"><span class="type">GstTypeFindElement</span></a> data structure</p>
</div>
</div>
<div class="refsect1">
<a name="gstreamer-plugins-typefind.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstTypeFindElement--caps"></a><h3>The <code class="literal">“caps”</code> property</h3>
<pre class="programlisting"> “caps” <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstCaps.html"><span class="type">GstCaps</span></a> *</pre>
<p>detected capabilities in stream.</p>
<p>Flags: Read</p>
</div>
<hr>
<div class="refsect2">
<a name="GstTypeFindElement--force-caps"></a><h3>The <code class="literal">“force-caps”</code> property</h3>
<pre class="programlisting"> “force-caps” <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstCaps.html"><span class="type">GstCaps</span></a> *</pre>
<p>force caps without doing a typefind.</p>
<p>Flags: Read / Write</p>
</div>
<hr>
<div class="refsect2">
<a name="GstTypeFindElement--minimum"></a><h3>The <code class="literal">“minimum”</code> property</h3>
<pre class="programlisting"> “minimum” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>minimum probability required to accept caps.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [1,100]</p>
<p>Default value: 1</p>
</div>
</div>
<div class="refsect1">
<a name="gstreamer-plugins-typefind.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="GstTypeFindElement-have-type"></a><h3>The <code class="literal">“have-type”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement"><span class="type">GstTypeFindElement</span></a> *typefind,
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> probability,
<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstCaps.html"><span class="type">GstCaps</span></a> *caps,
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</pre>
<p>This signal gets emitted when the type and its probability has
been found.</p>
<div class="refsect3">
<a name="id-1.2.18.12.2.5"></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>typefind</p></td>
<td class="parameter_description"><p>the typefind instance</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>probability</p></td>
<td class="parameter_description"><p>the probability of the type found</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the caps of the type found</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="https://developer.gnome.org/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
</div>
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