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<a href="#GnlComposition.description" class="shortcut">Description</a>
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<a href="#GnlComposition.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#GnlComposition.implemented-interfaces" class="shortcut">Implemented Interfaces</a>
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<a href="#GnlComposition.properties" class="shortcut">Properties</a>
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<h2><span class="refentrytitle"><a name="GnlComposition.top_of_page"></a>GnlComposition</span></h2>
<p>GnlComposition — Combines and controls GNonLin elements</p>
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<div class="refsynopsisdiv">
<a name="GnlComposition.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"> <a class="link" href="GnlComposition.html#GnlComposition-struct" title="GnlComposition">GnlComposition</a>;
</pre>
</div>
<div class="refsect1">
<a name="GnlComposition.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
GObject
+----GstObject
+----GstElement
+----GstBin
+----<a class="link" href="GnlObject.html" title="GnlObject">GnlObject</a>
+----GnlComposition
</pre>
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<div class="refsect1">
<a name="GnlComposition.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GnlComposition implements
GstChildProxy.</p>
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<div class="refsect1">
<a name="GnlComposition.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="GnlComposition.html#GnlComposition--update" title='The "update" property'>update</a>" <span class="type">gboolean</span> : Read / Write
</pre>
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<div class="refsect1">
<a name="GnlComposition.description"></a><h2>Description</h2>
<p>
A GnlComposition contains GnlObjects such as GnlSources and GnlOperations,
and connects them dynamically to create a composition timeline.
</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.2.7.3.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
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<col align="left" valign="top">
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<td><p><span class="term">plugin</span></p></td>
<td>
gnonlin
</td>
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<td><p><span class="term">author</span></p></td>
<td>Wim Taymans <wim.taymans@gmail.com>, Edward Hervey <bilboed@bilboed.com></td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Filter/Editor</td>
</tr>
</tbody>
</table></div>
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<hr>
<div class="refsect2">
<a name="id-1.2.2.7.3.2"></a><h3>Element Pads</h3>
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<td><p><span class="term">name</span></p></td>
<td>src</td>
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<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>sometimes</td>
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<tr>
<td><p><span class="term">details</span></p></td>
<td>ANY</td>
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<p>
</p>
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<div class="refsect1">
<a name="GnlComposition.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GnlComposition-struct"></a><h3>GnlComposition</h3>
<pre class="programlisting">typedef struct _GnlComposition GnlComposition;</pre>
<p>
</p>
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<div class="refsect1">
<a name="GnlComposition.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GnlComposition--update"></a><h3>The <code class="literal">"update"</code> property</h3>
<pre class="programlisting"> "update" <span class="type">gboolean</span> : Read / Write</pre>
<p>
If <code class="literal">TRUE</code>, then all modifications to objects within the composition will
cause a internal pipeline update (if required).
If <code class="literal">FALSE</code>, then only the composition's start/duration/stop properties
will be updated, and the internal pipeline will only be updated when the
property is set back to <code class="literal">TRUE</code>.
</p>
<p>
It is recommended to temporarily set this property to <code class="literal">FALSE</code> before doing
more than one modification in the composition (like adding/moving/removing
several objects at once) in order to speed up the process, and then setting
back the property to <code class="literal">TRUE</code> when done.
</p>
<p>Default value: TRUE</p>
</div>
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