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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<a href="#libunicapgtk-unicapgtk-video-display.synopsis" class="shortcut">Top</a>
                   | 
                  <a href="#libunicapgtk-unicapgtk-video-display.description" class="shortcut">Description</a>
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                  <a href="#libunicapgtk-unicapgtk-video-display.object-hierarchy" class="shortcut">Object Hierarchy</a>
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                  <a href="#libunicapgtk-unicapgtk-video-display.implemented-interfaces" class="shortcut">Implemented Interfaces</a>
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                  <a href="#libunicapgtk-unicapgtk-video-display.properties" class="shortcut">Properties</a>
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                  <a href="#libunicapgtk-unicapgtk-video-display.signals" class="shortcut">Signals</a>
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<div class="refentry">
<a name="libunicapgtk-unicapgtk-video-display"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libunicapgtk-unicapgtk-video-display.top_of_page"></a>UnicapgtkVideoDisplay</span></h2>
<p>UnicapgtkVideoDisplay</p>
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<div class="refsynopsisdiv">
<a name="libunicapgtk-unicapgtk-video-display.synopsis"></a><h2>Synopsis</h2>
<a name="UnicapgtkVideoDisplay"></a><pre class="synopsis">                    <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplayCropping" title="UnicapgtkVideoDisplayCropping">UnicapgtkVideoDisplayCropping</a>;
                    <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay-struct" title="UnicapgtkVideoDisplay">UnicapgtkVideoDisplay</a>;
<span class="returnvalue">GType</span>               <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-get-type" title="unicapgtk_video_display_get_type ()">unicapgtk_video_display_get_type</a>    (<em class="parameter"><code><span class="type">void</span></code></em>);
<span class="returnvalue">GtkWidget</span> *         <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-new" title="unicapgtk_video_display_new ()">unicapgtk_video_display_new</a>         (<em class="parameter"><code><span class="type">void</span></code></em>);
<span class="returnvalue">GtkWidget</span> *         <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-new-by-device" title="unicapgtk_video_display_new_by_device ()">unicapgtk_video_display_new_by_device</a>
                                                        (<em class="parameter"><code><span class="type">unicap_device_t</span> *device_spec</code></em>);
<span class="returnvalue">GtkWidget</span> *         <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-new-by-handle" title="unicapgtk_video_display_new_by_handle ()">unicapgtk_video_display_new_by_handle</a>
                                                        (<em class="parameter"><code><span class="type">unicap_handle_t</span> handle</code></em>);
<span class="returnvalue">gboolean</span>            <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-start" title="unicapgtk_video_display_start ()">unicapgtk_video_display_start</a>       (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-stop" title="unicapgtk_video_display_stop ()">unicapgtk_video_display_stop</a>        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);
<span class="returnvalue">unicap_device_t</span> *   <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-get-device" title="unicapgtk_video_display_get_device ()">unicapgtk_video_display_get_device</a>  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);
<span class="returnvalue">unicap_handle_t</span>     <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-get-handle" title="unicapgtk_video_display_get_handle ()">unicapgtk_video_display_get_handle</a>  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugkt</code></em>);
<span class="returnvalue">gboolean</span>            <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-format" title="unicapgtk_video_display_set_format ()">unicapgtk_video_display_set_format</a>  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_format_t</span> *format_spec</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-get-format" title="unicapgtk_video_display_get_format ()">unicapgtk_video_display_get_format</a>  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_format_t</span> *format</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-pause" title="unicapgtk_video_display_set_pause ()">unicapgtk_video_display_set_pause</a>   (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">gboolean</span> state</code></em>);
<span class="returnvalue">gboolean</span>            <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-get-pause" title="unicapgtk_video_display_get_pause ()">unicapgtk_video_display_get_pause</a>   (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);
<span class="returnvalue">gboolean</span>            <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-device" title="unicapgtk_video_display_set_device ()">unicapgtk_video_display_set_device</a>  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_device_t</span> *device_spec</code></em>);
<span class="returnvalue">gboolean</span>            <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-handle" title="unicapgtk_video_display_set_handle ()">unicapgtk_video_display_set_handle</a>  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_handle_t</span> handle</code></em>);
<span class="returnvalue">GdkPixbuf</span> *         <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-get-still-image" title="unicapgtk_video_display_get_still_image ()">unicapgtk_video_display_get_still_image</a>
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-still-image" title="unicapgtk_video_display_set_still_image ()">unicapgtk_video_display_set_still_image</a>
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *buffer</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-get-data-buffer" title="unicapgtk_video_display_get_data_buffer ()">unicapgtk_video_display_get_data_buffer</a>
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_data_buffer_t</span> **dest_buffer</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-crop" title="unicapgtk_video_display_set_crop ()">unicapgtk_video_display_set_crop</a>    (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplayCropping" title="UnicapgtkVideoDisplayCropping"><span class="type">UnicapgtkVideoDisplayCropping</span></a> *crop</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-get-crop" title="unicapgtk_video_display_get_crop ()">unicapgtk_video_display_get_crop</a>    (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplayCropping" title="UnicapgtkVideoDisplayCropping"><span class="type">UnicapgtkVideoDisplayCropping</span></a> *crop</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-size" title="unicapgtk_video_display_set_size ()">unicapgtk_video_display_set_size</a>    (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">gint</span> width</code></em>,
                                                         <em class="parameter"><code><span class="type">gint</span> height</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-scale-to-fit" title="unicapgtk_video_display_set_scale_to_fit ()">unicapgtk_video_display_set_scale_to_fit</a>
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">gboolean</span> scale</code></em>);
<span class="returnvalue">unicap_new_frame_callback_t</span>  <a class="link" href="libunicapgtk-unicapgtk-video-display.html#unicapgtk-video-display-set-new-frame-callback" title="unicapgtk_video_display_set_new_frame_callback ()">unicapgtk_video_display_set_new_frame_callback</a>
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">UnicapgtkCallbackFlags</span> flags</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_new_frame_callback_t</span> cb</code></em>,
                                                         <em class="parameter"><code><span class="type">void</span> *data</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libunicapgtk-unicapgtk-video-display.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
  GObject
   +----GInitiallyUnowned
         +----GtkObject
               +----GtkWidget
                     +----GtkContainer
                           +----GtkBin
                                 +----GtkFrame
                                       +----GtkAspectFrame
                                             +----UnicapgtkVideoDisplay
</pre>
</div>
<div class="refsect1">
<a name="libunicapgtk-unicapgtk-video-display.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
UnicapgtkVideoDisplay implements
 AtkImplementorIface and  GtkBuildable.</p>
</div>
<div class="refsect1">
<a name="libunicapgtk-unicapgtk-video-display.properties"></a><h2>Properties</h2>
<pre class="synopsis">
  "<a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay--backend" title='The "backend" property'>backend</a>"                  <span class="type">gchar</span>*                : Read / Write
  "<a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay--backend-fourcc" title='The "backend-fourcc" property'>backend-fourcc</a>"           <span class="type">guint</span>                 : Read / Write
  "<a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay--scale-to-fit" title='The "scale-to-fit" property'>scale-to-fit</a>"             <span class="type">gboolean</span>              : Read / Write
</pre>
</div>
<div class="refsect1">
<a name="libunicapgtk-unicapgtk-video-display.signals"></a><h2>Signals</h2>
<pre class="synopsis">
  "<a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay-unicapgtk-video-display-predisplay" title='The "unicapgtk-video-display-predisplay" signal'>unicapgtk-video-display-predisplay</a>"             : <code class="literal">Action</code>
</pre>
</div>
<div class="refsect1">
<a name="libunicapgtk-unicapgtk-video-display.description"></a><h2>Description</h2>
<p>
</p>
</div>
<div class="refsect1">
<a name="libunicapgtk-unicapgtk-video-display.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="UnicapgtkVideoDisplayCropping"></a><h3>UnicapgtkVideoDisplayCropping</h3>
<pre class="programlisting">typedef struct {
  int crop_x;
  int crop_y;
  int crop_width;
  int crop_height;
} UnicapgtkVideoDisplayCropping;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="UnicapgtkVideoDisplay-struct"></a><h3>UnicapgtkVideoDisplay</h3>
<pre class="programlisting">typedef struct _UnicapgtkVideoDisplay UnicapgtkVideoDisplay;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-get-type"></a><h3>unicapgtk_video_display_get_type ()</h3>
<pre class="programlisting"><span class="returnvalue">GType</span>               unicapgtk_video_display_get_type    (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-new"></a><h3>unicapgtk_video_display_new ()</h3>
<pre class="programlisting"><span class="returnvalue">GtkWidget</span> *         unicapgtk_video_display_new         (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Creates a new <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-new-by-device"></a><h3>unicapgtk_video_display_new_by_device ()</h3>
<pre class="programlisting"><span class="returnvalue">GtkWidget</span> *         unicapgtk_video_display_new_by_device
                                                        (<em class="parameter"><code><span class="type">unicap_device_t</span> *device_spec</code></em>);</pre>
<p>
Creates a new <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> and opens the given device to
operate with.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>device_spec</code></em> :</span></p></td>
<td>the device to be used by this video display widget</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-new-by-handle"></a><h3>unicapgtk_video_display_new_by_handle ()</h3>
<pre class="programlisting"><span class="returnvalue">GtkWidget</span> *         unicapgtk_video_display_new_by_handle
                                                        (<em class="parameter"><code><span class="type">unicap_handle_t</span> handle</code></em>);</pre>
<p>
Creates a new <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> and uses the handle to control
the video device. The handle gets cloned by this call.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>handle</code></em> :</span></p></td>
<td>a handle of the device to be used by this video display
widget</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-start"></a><h3>unicapgtk_video_display_start ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>            unicapgtk_video_display_start       (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);</pre>
<p>
Calls <span class="type">unicap_start_capture</span> on the device and starts displaying the
live video stream.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE when the live display could be successfully started.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-stop"></a><h3>unicapgtk_video_display_stop ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_stop        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);</pre>
<p>
Calls <span class="type">unicap_stop_capture</span> on the device and stops displaying the
live video image.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-get-device"></a><h3>unicapgtk_video_display_get_device ()</h3>
<pre class="programlisting"><span class="returnvalue">unicap_device_t</span> *   unicapgtk_video_display_get_device  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);</pre>
<p>
Returns the device currently used by the video display. The
returned data is owned by the library and should not be freed by
the application.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>an <span class="type">unicap_device_t</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-get-handle"></a><h3>unicapgtk_video_display_get_handle ()</h3>
<pre class="programlisting"><span class="returnvalue">unicap_handle_t</span>     unicapgtk_video_display_get_handle  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugkt</code></em>);</pre>
<p>
Returns a handle to the device currently used by the display. This
is a clone of the handle used by the display so <span class="type">unicap_close</span> must
be called on this handle by the calling application.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a cloned <span class="type">unicap_handle_t</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-format"></a><h3>unicapgtk_video_display_set_format ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>            unicapgtk_video_display_set_format  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_format_t</span> *format_spec</code></em>);</pre>
<p>
Sets the video format used by the display. If a handle is set on
the display ( ie. the display controls a device ), the video format
is also changed and only video formats supported by the device can
be set.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format_spec</code></em> :</span></p></td>
<td>a <span class="type">unicap_format_t</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE when the format change was successfull.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-get-format"></a><h3>unicapgtk_video_display_get_format ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_get_format  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_format_t</span> *format</code></em>);</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-pause"></a><h3>unicapgtk_video_display_set_pause ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_set_pause   (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">gboolean</span> state</code></em>);</pre>
<p>
Pauses or unpauses the video display. If the display is controling
a device, the device is not stopped or paused by this call. When
the video display is paused, no new frames are retrieved from the
device and the display is constantly updated with the last image
retrieved from the device. 
</p>
<p>
Buffer display events are still called. This way an application can
still draw an overlay onto the image.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an UnicapgtkVideoDisplay</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>state</code></em> :</span></p></td>
<td>TRUE to put the device into pause state; FALSE to put it
into running state</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-get-pause"></a><h3>unicapgtk_video_display_get_pause ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>            unicapgtk_video_display_get_pause   (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);</pre>
<p>
Retrieve current pause state
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE when the display is currently paused</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-device"></a><h3>unicapgtk_video_display_set_device ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>            unicapgtk_video_display_set_device  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_device_t</span> *device_spec</code></em>);</pre>
<p>
Set a new device on the display.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>device_spec</code></em> :</span></p></td>
<td>an <span class="type">unicap_device_t</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE when the new device could be successfully set.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-handle"></a><h3>unicapgtk_video_display_set_handle ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>            unicapgtk_video_display_set_handle  (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_handle_t</span> handle</code></em>);</pre>
<p>
Set a new device on the display, specified by a handle. The handle
gets cloned by this call.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>handle</code></em> :</span></p></td>
<td>a <span class="type">unicap_handle_t</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE when the device change was successful.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-get-still-image"></a><h3>unicapgtk_video_display_get_still_image ()</h3>
<pre class="programlisting"><span class="returnvalue">GdkPixbuf</span> *         unicapgtk_video_display_get_still_image
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>);</pre>
<p>
Retrieves a still image from the live video stream.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new allocated <span class="type">GdkPixbuf</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-still-image"></a><h3>unicapgtk_video_display_set_still_image ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_set_still_image
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *buffer</code></em>);</pre>
<p>
Sets a still image. If the video display is currently running, it
is put to pause state by this call.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>a data_buffer to be displayed</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-get-data-buffer"></a><h3>unicapgtk_video_display_get_data_buffer ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_get_data_buffer
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_data_buffer_t</span> **dest_buffer</code></em>);</pre>
<p>
Retrieves a still image from the live video stream.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>dest_buffer</code></em> :</span></p></td>
<td>a pointer where to store the new data_buffer</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-crop"></a><h3>unicapgtk_video_display_set_crop ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_set_crop    (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplayCropping" title="UnicapgtkVideoDisplayCropping"><span class="type">UnicapgtkVideoDisplayCropping</span></a> *crop</code></em>);</pre>
<p>
Set a cropping window. The video display will only display the
region specified in the cropping window.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <span class="type">UnicagtkVideoDisplay</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>crop</code></em> :</span></p></td>
<td>cropping specification</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-get-crop"></a><h3>unicapgtk_video_display_get_crop ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_get_crop    (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplayCropping" title="UnicapgtkVideoDisplayCropping"><span class="type">UnicapgtkVideoDisplayCropping</span></a> *crop</code></em>);</pre>
<p>
Retrieves the current cropping window.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>crop</code></em> :</span></p></td>
<td>pointer to where to store the <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplayCropping" title="UnicapgtkVideoDisplayCropping"><span class="type">UnicapgtkVideoDisplayCropping</span></a>
structure</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-size"></a><h3>unicapgtk_video_display_set_size ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_set_size    (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">gint</span> width</code></em>,
                                                         <em class="parameter"><code><span class="type">gint</span> height</code></em>);</pre>
<p>
Sets the output size of the display. Video data that is to be
displayed will be scaled to this size.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>new width</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>new height</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-scale-to-fit"></a><h3>unicapgtk_video_display_set_scale_to_fit ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unicapgtk_video_display_set_scale_to_fit
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">gboolean</span> scale</code></em>);</pre>
<p>
If scale_to_fit is set, the video display will get scaled to the
size allocated to the widget.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>scale</code></em> :</span></p></td>
<td>TRUE if the display should scale to fit</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unicapgtk-video-display-set-new-frame-callback"></a><h3>unicapgtk_video_display_set_new_frame_callback ()</h3>
<pre class="programlisting"><span class="returnvalue">unicap_new_frame_callback_t</span>  unicapgtk_video_display_set_new_frame_callback
                                                        (<em class="parameter"><code><a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *ugtk</code></em>,
                                                         <em class="parameter"><code><span class="type">UnicapgtkCallbackFlags</span> flags</code></em>,
                                                         <em class="parameter"><code><span class="type">unicap_new_frame_callback_t</span> cb</code></em>,
                                                         <em class="parameter"><code><span class="type">void</span> *data</code></em>);</pre>
<p>
Registers a callback function which is called in the unicap capture
thread context.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>ugtk</code></em> :</span></p></td>
<td>an <a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td>flags</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>cb</code></em> :</span></p></td>
<td>a callback function</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>a pointer to user data that is passed to the callback
function</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>old callback</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1">
<a name="libunicapgtk-unicapgtk-video-display.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="UnicapgtkVideoDisplay--backend"></a><h3>The <code class="literal">"backend"</code> property</h3>
<pre class="programlisting">  "backend"                  <span class="type">gchar</span>*                : Read / Write</pre>
<p></p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="UnicapgtkVideoDisplay--backend-fourcc"></a><h3>The <code class="literal">"backend-fourcc"</code> property</h3>
<pre class="programlisting">  "backend-fourcc"           <span class="type">guint</span>                 : Read / Write</pre>
<p></p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="UnicapgtkVideoDisplay--scale-to-fit"></a><h3>The <code class="literal">"scale-to-fit"</code> property</h3>
<pre class="programlisting">  "scale-to-fit"             <span class="type">gboolean</span>              : Read / Write</pre>
<p></p>
<p>Default value: FALSE</p>
</div>
</div>
<div class="refsect1">
<a name="libunicapgtk-unicapgtk-video-display.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="UnicapgtkVideoDisplay-unicapgtk-video-display-predisplay"></a><h3>The <code class="literal">"unicapgtk-video-display-predisplay"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                user_function                      (<a class="link" href="libunicapgtk-unicapgtk-video-display.html#UnicapgtkVideoDisplay"><span class="type">UnicapgtkVideoDisplay</span></a> *unicapgtkvideodisplay,
                                                        <span class="type">gpointer</span>               arg1,
                                                        <span class="type">gpointer</span>               user_data)                  : <code class="literal">Action</code></pre>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unicapgtkvideodisplay</code></em> :</span></p></td>
<td>the object which received the signal.</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>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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