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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> |
| </div> |
| <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> |
| </div> |
| <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> |
| </div> |
| <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> |
| </div> |
| <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. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <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> |
| </tr> |
| <tr> |
| <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 |
| </td> |
| </tr> |
| <tr> |
| <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) |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <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> |
| </div> |
| <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> |
| <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>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> |
| </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| <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> |
| </div> |
| </div> |
| <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> |
| </div> |
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