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| <a href="#GstTimedValueControlSource.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#GstTimedValueControlSource.description" class="shortcut">Description</a> |
| | |
| <a href="#GstTimedValueControlSource.object-hierarchy" class="shortcut">Object Hierarchy</a> |
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| <div class="refentry"> |
| <a name="GstTimedValueControlSource"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="GstTimedValueControlSource.top_of_page"></a>GstTimedValueControlSource</span></h2> |
| <p>GstTimedValueControlSource — timed value control source base class</p> |
| </td> |
| <td valign="top" align="right"></td> |
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| <div class="refsynopsisdiv"> |
| <a name="GstTimedValueControlSource.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <libs/controller/gsttimedvaluecontrolsource.h> |
| |
| struct <a class="link" href="GstTimedValueControlSource.html#GstTimedValueControlSource-struct" title="struct GstTimedValueControlSource">GstTimedValueControlSource</a>; |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Sequences.html#GSequenceIter"><span class="returnvalue">GSequenceIter</span></a> * <a class="link" href="GstTimedValueControlSource.html#gst-timed-value-control-source-find-control-point-iter" title="gst_timed_value_control_source_find_control_point_iter ()">gst_timed_value_control_source_find_control_point_iter</a> |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstTimedValueControlSource.html#gst-timed-value-control-source-set" title="gst_timed_value_control_source_set ()">gst_timed_value_control_source_set</a> (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>, |
| <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> value</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstTimedValueControlSource.html#gst-timed-value-control-source-set-from-list" title="gst_timed_value_control_source_set_from_list ()">gst_timed_value_control_source_set_from_list</a> |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Singly-Linked-Lists.html#GSList"><span class="type">GSList</span></a> *timedvalues</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * <a class="link" href="GstTimedValueControlSource.html#gst-timed-value-control-source-get-all" title="gst_timed_value_control_source_get_all ()">gst_timed_value_control_source_get_all</a> |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstTimedValueControlSource.html#gst-timed-value-control-source-unset" title="gst_timed_value_control_source_unset ()">gst_timed_value_control_source_unset</a> |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstTimedValueControlSource.html#gst-timed-value-control-source-unset-all" title="gst_timed_value_control_source_unset_all ()">gst_timed_value_control_source_unset_all</a> |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="GstTimedValueControlSource.html#gst-timed-value-control-source-get-count" title="gst_timed_value_control_source_get_count ()">gst_timed_value_control_source_get_count</a> |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstTimedValueControlSource.html#gst-timed-value-control-invalidate-cache" title="gst_timed_value_control_invalidate_cache ()">gst_timed_value_control_invalidate_cache</a> |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>); |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTimedValueControlSource.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 href="../gstreamer-1.0/GstObject.html">GstObject</a> |
| +----<a href="../gstreamer-1.0/GstControlSource.html">GstControlSource</a> |
| +----GstTimedValueControlSource |
| +----<a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource">GstInterpolationControlSource</a> |
| +----<a class="link" href="GstTriggerControlSource.html" title="GstTriggerControlSource">GstTriggerControlSource</a> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTimedValueControlSource.description"></a><h2>Description</h2> |
| <p> |
| Base class for <span class="type">GstContrlSources</span> that use time-stamped values. |
| </p> |
| <p> |
| When overriding bind, chain up first to give this bind implementation a |
| chance to setup things. |
| </p> |
| <p> |
| All functions are MT-safe. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTimedValueControlSource.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="GstTimedValueControlSource-struct"></a><h3>struct GstTimedValueControlSource</h3> |
| <pre class="programlisting">struct GstTimedValueControlSource;</pre> |
| <p> |
| The instance structure of <a href="../gstreamer-1.0/GstControlSource.html"><span class="type">GstControlSource</span></a>. |
| </p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-timed-value-control-source-find-control-point-iter"></a><h3>gst_timed_value_control_source_find_control_point_iter ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Sequences.html#GSequenceIter"><span class="returnvalue">GSequenceIter</span></a> * gst_timed_value_control_source_find_control_point_iter |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>);</pre> |
| <p> |
| Find last value before given timestamp in control point list. |
| If all values in the control point list come after the given |
| timestamp or no values exist, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned. |
| </p> |
| <p> |
| For use in control source implementations. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td> |
| <td>the control source to search in</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>timestamp</code></em> :</span></p></td> |
| <td>the search key</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the found <a href="http://library.gnome.org/devel/glib/unstable/glib-Sequences.html#GSequenceIter"><span class="type">GSequenceIter</span></a> or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-timed-value-control-source-set"></a><h3>gst_timed_value_control_source_set ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_timed_value_control_source_set (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>, |
| <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> value</code></em>);</pre> |
| <p> |
| Set the value of given controller-handled property at a certain time. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td> |
| <td>the <a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> object</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>timestamp</code></em> :</span></p></td> |
| <td>the time the control-change is scheduled for</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td> |
| <td>the control-value</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>FALSE if the values couldn't be set, TRUE otherwise.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-timed-value-control-source-set-from-list"></a><h3>gst_timed_value_control_source_set_from_list ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_timed_value_control_source_set_from_list |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Singly-Linked-Lists.html#GSList"><span class="type">GSList</span></a> *timedvalues</code></em>);</pre> |
| <p> |
| Sets multiple timed values at once. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td> |
| <td>the <a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> object</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>timedvalues</code></em> :</span></p></td> |
| <td>a list |
| with <a href="../gstreamer-1.0/GstControlSource.html#GstTimedValue"><span class="type">GstTimedValue</span></a> items. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> GstController.TimedValue]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>FALSE if the values couldn't be set, TRUE otherwise.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-timed-value-control-source-get-all"></a><h3>gst_timed_value_control_source_get_all ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * gst_timed_value_control_source_get_all |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>);</pre> |
| <p> |
| Returns a read-only copy of the list of <a href="../gstreamer-1.0/GstControlSource.html#GstTimedValue"><span class="type">GstTimedValue</span></a> for the given property. |
| Free the list after done with it. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td> |
| <td>the <a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> to get the list from</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a copy |
| of the list, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the property isn't handled by the controller. <span class="annotation">[<acronym title="Free data container after the code is done."><span class="acronym">transfer container</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> GstController.TimedValue]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-timed-value-control-source-unset"></a><h3>gst_timed_value_control_source_unset ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_timed_value_control_source_unset |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>);</pre> |
| <p> |
| Used to remove the value of given controller-handled property at a certain |
| time. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td> |
| <td>the <a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> object</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>timestamp</code></em> :</span></p></td> |
| <td>the time the control-change should be removed from</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>FALSE if the value couldn't be unset (i.e. not found, TRUE otherwise.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-timed-value-control-source-unset-all"></a><h3>gst_timed_value_control_source_unset_all ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_timed_value_control_source_unset_all |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>);</pre> |
| <p> |
| Used to remove all time-stamped values of given controller-handled property |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody><tr> |
| <td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td> |
| <td>the <a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> object</td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-timed-value-control-source-get-count"></a><h3>gst_timed_value_control_source_get_count ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_timed_value_control_source_get_count |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>);</pre> |
| <p> |
| Get the number of control points that are set. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td> |
| <td>the <a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> to get the number of values from</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the number of control points that are set.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-timed-value-control-invalidate-cache"></a><h3>gst_timed_value_control_invalidate_cache ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_timed_value_control_invalidate_cache |
| (<em class="parameter"><code><a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> *self</code></em>);</pre> |
| <p> |
| Reset the controlled value cache. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody><tr> |
| <td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td> |
| <td>the <a class="link" href="GstTimedValueControlSource.html" title="GstTimedValueControlSource"><span class="type">GstTimedValueControlSource</span></a> |
| </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
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