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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GstDevice: GStreamer 1.0 Core Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="GStreamer 1.0 Core Reference Manual">
<link rel="up" href="gstreamer-device-probing.html" title="GStreamer Device Discovery and Device Probing">
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#gstreamer-GstDevice.description" class="shortcut">Description</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="gstreamer-device-probing.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="gstreamer-GstDeviceMonitor.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="gstreamer-GstDeviceProvider.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="gstreamer-GstDevice"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gstreamer-GstDevice.top_of_page"></a>GstDevice</span></h2>
<p>GstDevice — Object representing a device</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gstreamer-GstDevice.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="GstElement.html" title="GstElement"><span class="returnvalue">GstElement</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstDevice.html#gst-device-create-element" title="gst_device_create_element ()">gst_device_create_element</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstDevice.html#gst-device-get-caps" title="gst_device_get_caps ()">gst_device_get_caps</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<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="gstreamer-GstDevice.html#gst-device-get-device-class" title="gst_device_get_device_class ()">gst_device_get_device_class</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<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="gstreamer-GstDevice.html#gst-device-get-display-name" title="gst_device_get_display_name ()">gst_device_get_display_name</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstDevice.html#gst-device-has-classes" title="gst_device_has_classes ()">gst_device_has_classes</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstDevice.html#gst-device-has-classesv" title="gst_device_has_classesv ()">gst_device_has_classesv</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstDevice.html#gst-device-reconfigure-element" title="gst_device_reconfigure_element ()">gst_device_reconfigure_element</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstDevice.html#gst-device-get-properties" title="gst_device_get_properties ()">gst_device_get_properties</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-GstDevice.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" 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-GstDevice.html#GstDevice" title="struct GstDevice">GstDevice</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gstreamer-GstDevice.html#GstDeviceClass" title="struct GstDeviceClass">GstDeviceClass</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-GstDevice.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/gst.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gstreamer-GstDevice.description"></a><h2>Description</h2>
<p><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> are objects representing a device, they contain
relevant metadata about the device, such as its class and the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>
representing the media types it can produce or handle.</p>
<p><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> are created by <a class="link" href="gstreamer-GstDeviceProvider.html#GstDeviceProvider" title="struct GstDeviceProvider"><span class="type">GstDeviceProvider</span></a> objects which can be
aggregated by <a class="link" href="gstreamer-GstDeviceMonitor.html#GstDeviceMonitor" title="struct GstDeviceMonitor"><span class="type">GstDeviceMonitor</span></a> objects.</p>
</div>
<div class="refsect1">
<a name="gstreamer-GstDevice.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-device-create-element"></a><h3>gst_device_create_element ()</h3>
<pre class="programlisting"><a class="link" href="GstElement.html" title="GstElement"><span class="returnvalue">GstElement</span></a> *
gst_device_create_element (<em class="parameter"><code><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> *device</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> *name</code></em>);</pre>
<p>Creates the element with all of the required paramaters set to use
this device.</p>
<div class="refsect3">
<a name="id-1.4.3.7.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>device</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p> name of new element, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to automatically
create a unique name. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.3.7.2.6"></a><h4>Returns</h4>
<p> a new <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a> configured to use this device. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-device-get-caps"></a><h3>gst_device_get_caps ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_device_get_caps (<em class="parameter"><code><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> *device</code></em>);</pre>
<p>Getter for the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that this device supports.</p>
<div class="refsect3">
<a name="id-1.4.3.7.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>device</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.3.7.3.6"></a><h4>Returns</h4>
<p> The <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> supported by this device. Unref with
<a class="link" href="GstCaps.html#gst-caps-unref" title="gst_caps_unref ()"><code class="function">gst_caps_unref()</code></a> when done.</p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-device-get-device-class"></a><h3>gst_device_get_device_class ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_device_get_device_class (<em class="parameter"><code><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> *device</code></em>);</pre>
<p>Gets the "class" of a device. This is a "/" separated list of
classes that represent this device. They are a subset of the
classes of the <a class="link" href="gstreamer-GstDeviceProvider.html#GstDeviceProvider" title="struct GstDeviceProvider"><span class="type">GstDeviceProvider</span></a> that produced this device.</p>
<div class="refsect3">
<a name="id-1.4.3.7.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>device</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.3.7.4.6"></a><h4>Returns</h4>
<p> The device class. Free with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> after use.</p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-device-get-display-name"></a><h3>gst_device_get_display_name ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_device_get_display_name (<em class="parameter"><code><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> *device</code></em>);</pre>
<p>Gets the user-friendly name of the device.</p>
<div class="refsect3">
<a name="id-1.4.3.7.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>device</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.3.7.5.6"></a><h4>Returns</h4>
<p> The device name. Free with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> after use.</p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-device-has-classes"></a><h3>gst_device_has_classes ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_device_has_classes (<em class="parameter"><code><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> *device</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> *classes</code></em>);</pre>
<p>Check if <em class="parameter"><code>device</code></em>
 matches all of the given classes</p>
<div class="refsect3">
<a name="id-1.4.3.7.6.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>device</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>classes</p></td>
<td class="parameter_description"><p>a "/"-separated list of device classes to match, only match if
all classes are matched</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.3.7.6.6"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>device</code></em>
matches.</p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-device-has-classesv"></a><h3>gst_device_has_classesv ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_device_has_classesv (<em class="parameter"><code><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> *device</code></em>,
                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> **classes</code></em>);</pre>
<p>Check if <em class="parameter"><code>factory</code></em>
 matches all of the given classes</p>
<div class="refsect3">
<a name="id-1.4.3.7.7.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>device</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>classes</p></td>
<td class="parameter_description"><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 classes
to match, only match if all classes are matched. </p></td>
<td class="parameter_annotations"><span class="annotation">[<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>
<div class="refsect3">
<a name="id-1.4.3.7.7.6"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>device</code></em>
matches.</p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-device-reconfigure-element"></a><h3>gst_device_reconfigure_element ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_device_reconfigure_element (<em class="parameter"><code><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> *device</code></em>,
                                <em class="parameter"><code><a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a> *element</code></em>);</pre>
<p>Tries to reconfigure an existing element to use the device. If this
function fails, then one must destroy the element and create a new one
using <a class="link" href="gstreamer-GstDevice.html#gst-device-create-element" title="gst_device_create_element ()"><code class="function">gst_device_create_element()</code></a>.</p>
<p>Note: This should only be implemented for elements can change their
device in the PLAYING state.</p>
<div class="refsect3">
<a name="id-1.4.3.7.8.6"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>device</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>element</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.3.7.8.7"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the element could be reconfigured to use this device,
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-device-get-properties"></a><h3>gst_device_get_properties ()</h3>
<pre class="programlisting"><a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
gst_device_get_properties (<em class="parameter"><code><a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> *device</code></em>);</pre>
<p>Gets the extra properties of a device.</p>
<div class="refsect3">
<a name="id-1.4.3.7.9.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>device</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.3.7.9.6"></a><h4>Returns</h4>
<p> The extra properties or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> when there are none.
Free with <a class="link" href="GstStructure.html#gst-structure-free" title="gst_structure_free ()"><code class="function">gst_structure_free()</code></a> after use.</p>
</div>
<p class="since">Since: <a class="link" href="ix03.html#api-index-1.6">1.6</a></p>
</div>
</div>
<div class="refsect1">
<a name="gstreamer-GstDevice.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstDevice"></a><h3>struct GstDevice</h3>
<pre class="programlisting">struct GstDevice {
  GstObject         parent;
};
</pre>
<p>A device object.</p>
<div class="refsect3">
<a name="id-1.4.3.8.2.5"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody><tr>
<td class="struct_member_name"><p><a class="link" href="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> <em class="structfield"><code><a name="GstDevice.parent"></a>parent</code></em>;</p></td>
<td class="struct_member_description"><p>The parent <a class="link" href="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> strucuture.</p></td>
<td class="struct_member_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GstDeviceClass"></a><h3>struct GstDeviceClass</h3>
<pre class="programlisting">struct GstDeviceClass {
  GstObjectClass    parent_class;

  GstElement * (*create_element)      (GstDevice * device, const gchar * name);
  gboolean     (*reconfigure_element) (GstDevice * device, GstElement * element);
};
</pre>
<p>The class structure for a <a class="link" href="gstreamer-GstDevice.html#GstDevice" title="struct GstDevice"><span class="type">GstDevice</span></a> object.</p>
<div class="refsect3">
<a name="id-1.4.3.8.3.5"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a class="link" href="GstObject.html#GstObjectClass" title="struct GstObjectClass"><span class="type">GstObjectClass</span></a> <em class="structfield"><code><a name="GstDeviceClass.parent-class"></a>parent_class</code></em>;</p></td>
<td class="struct_member_description"><p>The parent <a class="link" href="GstObject.html#GstObjectClass" title="struct GstObjectClass"><span class="type">GstObjectClass</span></a> strucuture.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstDeviceClass.create-element"></a>create_element</code></em> ()</p></td>
<td class="struct_member_description"><p>Creates the fully configured element to access this device.
Subclasses need to override this and return a new element.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstDeviceClass.reconfigure-element"></a>reconfigure_element</code></em> ()</p></td>
<td class="struct_member_description"><p>This only needs to be implemented by subclasses if the
element can be reconfigured to use a different device. See the documentation
for <a class="link" href="gstreamer-GstDevice.html#gst-device-reconfigure-element" title="gst_device_reconfigure_element ()"><code class="function">gst_device_reconfigure_element()</code></a>.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.4">1.4</a></p>
</div>
</div>
<div class="refsect1">
<a name="gstreamer-GstDevice.see-also"></a><h2>See Also</h2>
<p><a class="link" href="gstreamer-GstDeviceProvider.html#GstDeviceProvider" title="struct GstDeviceProvider"><span class="type">GstDeviceProvider</span></a></p>
</div>
</div>
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