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<a href="#CheeseCameraDeviceMonitor.description" class="shortcut">Description</a>
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<a href="#CheeseCameraDeviceMonitor.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#CheeseCameraDeviceMonitor.signals" class="shortcut">Signals</a>
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<a name="CheeseCameraDeviceMonitor"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="CheeseCameraDeviceMonitor.top_of_page"></a>CheeseCameraDeviceMonitor</span></h2>
<p>CheeseCameraDeviceMonitor — Simple object to enumerate v4l devices</p>
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<div class="refsect1">
<a name="CheeseCameraDeviceMonitor.stability-level"></a><h2>Stability Level</h2>
Unstable, unless otherwise indicated
</div>
<div class="refsynopsisdiv">
<a name="CheeseCameraDeviceMonitor.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <cheese/cheese-camera-device-monitor.h>
struct <a class="link" href="CheeseCameraDeviceMonitor.html#CheeseCameraDeviceMonitorClass" title="struct CheeseCameraDeviceMonitorClass">CheeseCameraDeviceMonitorClass</a>;
struct <a class="link" href="CheeseCameraDeviceMonitor.html#CheeseCameraDeviceMonitor-struct" title="struct CheeseCameraDeviceMonitor">CheeseCameraDeviceMonitor</a>;
<a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="returnvalue">CheeseCameraDeviceMonitor</span></a> * <a class="link" href="CheeseCameraDeviceMonitor.html#cheese-camera-device-monitor-new" title="cheese_camera_device_monitor_new ()">cheese_camera_device_monitor_new</a>
(<em class="parameter"><code><span class="type">void</span></code></em>);
<span class="returnvalue">void</span> <a class="link" href="CheeseCameraDeviceMonitor.html#cheese-camera-device-monitor-coldplug" title="cheese_camera_device_monitor_coldplug ()">cheese_camera_device_monitor_coldplug</a>
(<em class="parameter"><code><a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> *monitor</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="CheeseCameraDeviceMonitor.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>
+----CheeseCameraDeviceMonitor
</pre>
</div>
<div class="refsect1">
<a name="CheeseCameraDeviceMonitor.signals"></a><h2>Signals</h2>
<pre class="synopsis">
"<a class="link" href="CheeseCameraDeviceMonitor.html#CheeseCameraDeviceMonitor-added" title='The "added" signal'>added</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-ACTION:CAPS"><code class="literal">Action</code></a>
"<a class="link" href="CheeseCameraDeviceMonitor.html#CheeseCameraDeviceMonitor-removed" title='The "removed" signal'>removed</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-ACTION:CAPS"><code class="literal">Action</code></a>
</pre>
</div>
<div class="refsect1">
<a name="CheeseCameraDeviceMonitor.description"></a><h2>Description</h2>
<p>
<a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> provides a basic interface for video4linux device
enumeration and hotplugging.
</p>
<p>
It uses either GUdev or some platform specific code to list video devices.
It is also capable (right now in Linux only, with the udev backend) to
monitor device plugging and emit a CheeseCameraDeviceMonitor::added or
CheeseCameraDeviceMonitor::removed signal when an event happens.
</p>
</div>
<div class="refsect1">
<a name="CheeseCameraDeviceMonitor.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="CheeseCameraDeviceMonitorClass"></a><h3>struct CheeseCameraDeviceMonitorClass</h3>
<pre class="programlisting">struct CheeseCameraDeviceMonitorClass {
void (*added)(CheeseCameraDeviceMonitor *monitor,
CheeseCameraDevice *device);
void (*removed)(CheeseCameraDeviceMonitor *monitor, const gchar *uuid);
};
</pre>
<p>
Class for <a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a>.
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<td><p><span class="term"><em class="structfield"><code><a name="CheeseCameraDeviceMonitorClass.added"></a>added</code></em> ()</span></p></td>
<td>invoked when a new video capture device is connected</td>
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<td><p><span class="term"><em class="structfield"><code><a name="CheeseCameraDeviceMonitorClass.removed"></a>removed</code></em> ()</span></p></td>
<td>invoked when a video capture device is removed</td>
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<div class="refsect2">
<a name="CheeseCameraDeviceMonitor-struct"></a><h3>struct CheeseCameraDeviceMonitor</h3>
<pre class="programlisting">struct CheeseCameraDeviceMonitor;</pre>
<p>
Use the accessor functions below.
</p>
</div>
<hr>
<div class="refsect2">
<a name="cheese-camera-device-monitor-new"></a><h3>cheese_camera_device_monitor_new ()</h3>
<pre class="programlisting"><a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="returnvalue">CheeseCameraDeviceMonitor</span></a> * cheese_camera_device_monitor_new
(<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Returns a new <a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> object.
</p>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> object.</td>
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<hr>
<div class="refsect2">
<a name="cheese-camera-device-monitor-coldplug"></a><h3>cheese_camera_device_monitor_coldplug ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cheese_camera_device_monitor_coldplug
(<em class="parameter"><code><a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> *monitor</code></em>);</pre>
<p>
Enumerate plugged in cameras and emit ::added for those which already exist.
This is only required when your program starts, so be sure to connect to
at least the ::added signal before calling this function.
</p>
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<td><p><span class="term"><em class="parameter"><code>monitor</code></em> :</span></p></td>
<td>a <a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a>
</td>
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<div class="refsect1">
<a name="CheeseCameraDeviceMonitor.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="CheeseCameraDeviceMonitor-added"></a><h3>The <code class="literal">"added"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> *monitor,
<a class="link" href="CheeseCameraDevice.html" title="CheeseCameraDevice"><span class="type">CheeseCameraDevice</span></a> *device,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-ACTION:CAPS"><code class="literal">Action</code></a></pre>
<p>
The ::added signal is emitted when a camera is added, or on start-up
after <a class="link" href="CheeseCameraDeviceMonitor.html#cheese-camera-device-monitor-coldplug" title="cheese_camera_device_monitor_coldplug ()"><code class="function">cheese_camera_device_monitor_coldplug()</code></a> is called.
</p>
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<td><p><span class="term"><em class="parameter"><code>monitor</code></em> :</span></p></td>
<td>the <a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> that emitted the signal</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>device</code></em> :</span></p></td>
<td>a new <a class="link" href="CheeseCameraDevice.html" title="CheeseCameraDevice"><span class="type">CheeseCameraDevice</span></a> representing the video capture device</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
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</div>
<hr>
<div class="refsect2">
<a name="CheeseCameraDeviceMonitor-removed"></a><h3>The <code class="literal">"removed"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> *monitor,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uuid,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-ACTION:CAPS"><code class="literal">Action</code></a></pre>
<p>
The ::removed signal is emitted when a camera is unplugged, or disabled on
the system.
</p>
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<col align="left" valign="top">
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<tr>
<td><p><span class="term"><em class="parameter"><code>monitor</code></em> :</span></p></td>
<td>the <a class="link" href="CheeseCameraDeviceMonitor.html" title="CheeseCameraDeviceMonitor"><span class="type">CheeseCameraDeviceMonitor</span></a> that emitted the signal</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>uuid</code></em> :</span></p></td>
<td>UUID for the device on the system</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
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</tbody>
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