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<title>GNonLin 1.2.0 Reference Manual: GnlObject</title>
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<h2><span class="refentrytitle"><a name="GnlObject.top_of_page"></a>GnlObject</span></h2>
<p>GnlObject — Base class for GNonLin elements</p>
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<div class="refsect1">
<a name="GnlObject.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"><span class="type">gboolean</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--active" title="The “active” property">active</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type">
<span class="type">GstCaps</span> *</td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--caps" title="The “caps” property">caps</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><span class="type">gint64</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--duration" title="The “duration” property">duration</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><span class="type">gint64</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--media-duration" title="The “media-duration” property">media-duration</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><span class="type">guint64</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--inpoint" title="The “inpoint” property">inpoint</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><span class="type">guint64</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--media-stop" title="The “media-stop” property">media-stop</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><span class="type">guint</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--priority" title="The “priority” property">priority</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><span class="type">gdouble</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--rate" title="The “rate” property">rate</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><span class="type">guint64</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--start" title="The “start” property">start</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><span class="type">guint64</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--stop" title="The “stop” property">stop</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><span class="type">gboolean</span></td>
<td class="property_name"><a class="link" href="GnlObject.html#GnlObject--expandable" title="The “expandable” property">expandable</a></td>
<td class="property_flags">Read / Write</td>
</tr>
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<div class="refsect1">
<a name="GnlObject.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"> </td>
<td class="function_name"><a class="link" href="GnlObject.html#GnlObject-struct" title="GnlObject">GnlObject</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GnlObject.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> GObject
<span class="lineart">╰──</span> GInitiallyUnowned
<span class="lineart">╰──</span> GstObject
<span class="lineart">╰──</span> GstElement
<span class="lineart">╰──</span> GstBin
<span class="lineart">╰──</span> GnlObject
<span class="lineart">├──</span> <a class="link" href="GnlComposition.html" title="GnlComposition">GnlComposition</a>
<span class="lineart">├──</span> <a class="link" href="GnlOperation.html" title="GnlOperation">GnlOperation</a>
<span class="lineart">╰──</span> <a class="link" href="GnlSource.html" title="GnlSource">GnlSource</a>
</pre>
</div>
<div class="refsect1">
<a name="GnlObject.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GnlObject implements
GstChildProxy.</p>
</div>
<div class="refsect1">
<a name="GnlObject.description"></a><h2>Description</h2>
<div class="refsect2">
<a name="id-1.3.2.7.2"></a><p>
GnlObject encapsulates default behaviour and implements standard
properties provided by all the GNonLin elements.
</p>
</div>
</div>
<div class="refsect1">
<a name="GnlObject.functions_details"></a><h2>Functions</h2>
</div>
<div class="refsect1">
<a name="GnlObject.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GnlObject-struct"></a><h3>GnlObject</h3>
<pre class="programlisting">typedef struct _GnlObject GnlObject;</pre>
<p>
</p>
</div>
</div>
<div class="refsect1">
<a name="GnlObject.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GnlObject--active"></a><h3>The <code class="literal">“active”</code> property</h3>
<pre class="programlisting"> “active” <span class="type">gboolean</span></pre>
<p>Indicates whether this object should be used by its container.</p>
<p>Set to <span class="type">TRUE</span> to temporarily disable this object in a <a class="link" href="GnlComposition.html" title="GnlComposition"><span class="type">GnlComposition</span></a>.</p>
<p>Flags: Read / Write</p>
<p>Default value: TRUE</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--caps"></a><h3>The <code class="literal">“caps”</code> property</h3>
<pre class="programlisting"> “caps” <span class="type">GstCaps</span> *</pre>
<p>Caps used to filter/choose the output stream.</p>
<p>If the controlled object produces several stream, you can set this
property to choose a specific stream.</p>
<p>If nothing is specified then a source pad will be chosen at random.</p>
<p>Flags: Read / Write</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--duration"></a><h3>The <code class="literal">“duration”</code> property</h3>
<pre class="programlisting"> “duration” <span class="type">gint64</span></pre>
<p>The outgoing duration in nanoseconds.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: >= 0</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--media-duration"></a><h3>The <code class="literal">“media-duration”</code> property</h3>
<pre class="programlisting"> “media-duration” <span class="type">gint64</span></pre>
<p>Duration of the media (in nanoseconds), can be negative.</p>
<p>Flags: Read / Write</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--inpoint"></a><h3>The <code class="literal">“inpoint”</code> property</h3>
<pre class="programlisting"> “inpoint” <span class="type">guint64</span></pre>
<p>The media start position in nanoseconds.</p>
<p>Also called 'in-point' in video-editing, this corresponds to
what position in the 'contained' object we should start outputting from.</p>
<p>Flags: Read / Write</p>
<p>Default value: 18446744073709551615</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--media-stop"></a><h3>The <code class="literal">“media-stop”</code> property</h3>
<pre class="programlisting"> “media-stop” <span class="type">guint64</span></pre>
<p>The media stop position (in nanoseconds).</p>
<p>Flags: Read</p>
<p>Default value: 18446744073709551615</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--priority"></a><h3>The <code class="literal">“priority”</code> property</h3>
<pre class="programlisting"> “priority” <span class="type">guint</span></pre>
<p>The priority of the object in the container.</p>
<p>The highest priority is 0, meaning this object will be selected over
any other between start and stop.</p>
<p>The lowest priority is G_MAXUINT32.</p>
<p>Objects whose priority is (-1) will be considered as 'default' objects
in GnlComposition and their start/stop values will be modified as to
fit the whole duration of the composition.</p>
<p>Flags: Read / Write</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--rate"></a><h3>The <code class="literal">“rate”</code> property</h3>
<pre class="programlisting"> “rate” <span class="type">gdouble</span></pre>
<p>Playback rate of the media (1.0 : standard forward).</p>
<p>Flags: Read</p>
<p>Default value: 1</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--start"></a><h3>The <code class="literal">“start”</code> property</h3>
<pre class="programlisting"> “start” <span class="type">guint64</span></pre>
<p>The start position relative to the parent in nanoseconds.</p>
<p>Flags: Read / Write</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--stop"></a><h3>The <code class="literal">“stop”</code> property</h3>
<pre class="programlisting"> “stop” <span class="type">guint64</span></pre>
<p>The stop position relative to the parent in nanoseconds.</p>
<p>This value is computed based on the values of start and duration.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GnlObject--expandable"></a><h3>The <code class="literal">“expandable”</code> property</h3>
<pre class="programlisting"> “expandable” <span class="type">gboolean</span></pre>
<p>Indicates whether this object should expand to the full duration of its
container <a class="link" href="GnlComposition.html" title="GnlComposition"><span class="type">GnlComposition</span></a>.</p>
<p>Flags: Read / Write</p>
<p>Default value: FALSE</p>
</div>
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