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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<a href="#GstSystemClock.description" class="shortcut">Description</a>
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<a href="#GstSystemClock.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#GstSystemClock.properties" class="shortcut">Properties</a>
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<a name="GstSystemClock"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="GstSystemClock.top_of_page"></a>GstSystemClock</span></h2>
<p>GstSystemClock — Default clock that uses the current system time</p>
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<div class="refsynopsisdiv">
<a name="GstSystemClock.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <gst/gst.h>
enum <a class="link" href="GstSystemClock.html#GstClockType" title="enum GstClockType">GstClockType</a>;
struct <a class="link" href="GstSystemClock.html#GstSystemClock-struct" title="struct GstSystemClock">GstSystemClock</a>;
<a class="link" href="GstClock.html" title="GstClock"><span class="returnvalue">GstClock</span></a> * <a class="link" href="GstSystemClock.html#gst-system-clock-obtain" title="gst_system_clock_obtain ()">gst_system_clock_obtain</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
</pre>
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<div class="refsect1">
<a name="GstSystemClock.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>
+----<a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
+----<a class="link" href="GstObject.html" title="GstObject">GstObject</a>
+----<a class="link" href="GstClock.html" title="GstClock">GstClock</a>
+----GstSystemClock
</pre>
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<div class="refsect1">
<a name="GstSystemClock.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="GstSystemClock.html#GstSystemClock--clock-type" title='The "clock-type" property'>clock-type</a>" <a class="link" href="GstSystemClock.html#GstClockType" title="enum GstClockType"><span class="type">GstClockType</span></a> : Read / Write
</pre>
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<div class="refsect1">
<a name="GstSystemClock.description"></a><h2>Description</h2>
<p>
The GStreamer core provides a GstSystemClock based on the system time.
Asynchronous callbacks are scheduled from an internal thread.
</p>
<p>
Clock implementors are encouraged to subclass this systemclock as it
implements the async notification.
</p>
<p>
Subclasses can however override all of the important methods for sync and
async notifications to implement their own callback methods or blocking
wait operations.
</p>
<p>
Last reviewed on 2006-03-08 (0.10.4)
</p>
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<div class="refsect1">
<a name="GstSystemClock.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstClockType"></a><h3>enum GstClockType</h3>
<pre class="programlisting">typedef enum {
GST_CLOCK_TYPE_REALTIME = 0,
GST_CLOCK_TYPE_MONOTONIC = 1,
GST_CLOCK_TYPE_OTHER = 2
} GstClockType;
</pre>
<p>
The different kind of clocks.
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<td><p><a name="GST-CLOCK-TYPE-REALTIME:CAPS"></a><span class="term"><code class="literal">GST_CLOCK_TYPE_REALTIME</code></span></p></td>
<td>time since Epoch
</td>
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<td><p><a name="GST-CLOCK-TYPE-MONOTONIC:CAPS"></a><span class="term"><code class="literal">GST_CLOCK_TYPE_MONOTONIC</code></span></p></td>
<td>monotonic time since some unspecified starting
point
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<td><p><a name="GST-CLOCK-TYPE-OTHER:CAPS"></a><span class="term"><code class="literal">GST_CLOCK_TYPE_OTHER</code></span></p></td>
<td>some other time source is used (Since: 1.0.5)
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<div class="refsect2">
<a name="GstSystemClock-struct"></a><h3>struct GstSystemClock</h3>
<pre class="programlisting">struct GstSystemClock;</pre>
<p>
The default implementation of a <a class="link" href="GstClock.html" title="GstClock"><span class="type">GstClock</span></a> that uses the system time.
</p>
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<hr>
<div class="refsect2">
<a name="gst-system-clock-obtain"></a><h3>gst_system_clock_obtain ()</h3>
<pre class="programlisting"><a class="link" href="GstClock.html" title="GstClock"><span class="returnvalue">GstClock</span></a> * gst_system_clock_obtain (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Get a handle to the default system clock. The refcount of the
clock will be increased so you need to unref the clock after
usage.
</p>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the default clock.
MT safe. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
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<div class="refsect1">
<a name="GstSystemClock.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstSystemClock--clock-type"></a><h3>The <code class="literal">"clock-type"</code> property</h3>
<pre class="programlisting"> "clock-type" <a class="link" href="GstSystemClock.html#GstClockType" title="enum GstClockType"><span class="type">GstClockType</span></a> : Read / Write</pre>
<p>The type of underlying clock implementation used.</p>
<p>Default value: GST_CLOCK_TYPE_MONOTONIC</p>
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<div class="refsect1">
<a name="GstSystemClock.see-also"></a><h2>See Also</h2>
<a class="link" href="GstClock.html" title="GstClock"><span class="type">GstClock</span></a>
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