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| <a href="#GstInterpolationControlSource.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#GstInterpolationControlSource.description" class="shortcut">Description</a> |
| | |
| <a href="#GstInterpolationControlSource.object-hierarchy" class="shortcut">Object Hierarchy</a> |
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| <a name="GstInterpolationControlSource"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="GstInterpolationControlSource.top_of_page"></a>GstInterpolationControlSource</span></h2> |
| <p>GstInterpolationControlSource — interpolation control source</p> |
| </td> |
| <td valign="top" align="right"></td> |
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| <div class="refsynopsisdiv"> |
| <a name="GstInterpolationControlSource.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <libs/controller/gstinterpolationcontrolsource.h> |
| |
| struct <a class="link" href="GstInterpolationControlSource.html#GstInterpolationControlSource-struct" title="struct GstInterpolationControlSource">GstInterpolationControlSource</a>; |
| enum <a class="link" href="GstInterpolationControlSource.html#GstInterpolateMode" title="enum GstInterpolateMode">GstInterpolateMode</a>; |
| <a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="returnvalue">GstInterpolationControlSource</span></a> * <a class="link" href="GstInterpolationControlSource.html#gst-interpolation-control-source-new" title="gst_interpolation_control_source_new ()">gst_interpolation_control_source_new</a> |
| (<em class="parameter"><code><span class="type">void</span></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="GstInterpolationControlSource.html#gst-interpolation-control-source-set" title="gst_interpolation_control_source_set ()">gst_interpolation_control_source_set</a> |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-0.11/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>, |
| <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</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="GstInterpolationControlSource.html#gst-interpolation-control-source-set-from-list" title="gst_interpolation_control_source_set_from_list ()">gst_interpolation_control_source_set_from_list</a> |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstInterpolationControlSource.html#gst-interpolation-control-source-set-interpolation-mode" title="gst_interpolation_control_source_set_interpolation_mode ()">gst_interpolation_control_source_set_interpolation_mode</a> |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html#GstInterpolateMode" title="enum GstInterpolateMode"><span class="type">GstInterpolateMode</span></a> mode</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="GstInterpolationControlSource.html#gst-interpolation-control-source-get-all" title="gst_interpolation_control_source_get_all ()">gst_interpolation_control_source_get_all</a> |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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="GstInterpolationControlSource.html#gst-interpolation-control-source-unset" title="gst_interpolation_control_source_unset ()">gst_interpolation_control_source_unset</a> |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-0.11/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstInterpolationControlSource.html#gst-interpolation-control-source-unset-all" title="gst_interpolation_control_source_unset_all ()">gst_interpolation_control_source_unset_all</a> |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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="GstInterpolationControlSource.html#gst-interpolation-control-source-get-count" title="gst_interpolation_control_source_get_count ()">gst_interpolation_control_source_get_count</a> |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>); |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstInterpolationControlSource.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 class="link" href="GstControlSource.html" title="GstControlSource">GstControlSource</a> |
| +----GstInterpolationControlSource |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstInterpolationControlSource.description"></a><h2>Description</h2> |
| <p> |
| <a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> is a <a class="link" href="GstControlSource.html" title="GstControlSource"><span class="type">GstControlSource</span></a>, that interpolates values between user-given |
| control points. It supports several interpolation modes and property types. |
| </p> |
| <p> |
| To use <a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> get a new instance by calling |
| <a class="link" href="GstInterpolationControlSource.html#gst-interpolation-control-source-new" title="gst_interpolation_control_source_new ()"><code class="function">gst_interpolation_control_source_new()</code></a>, bind it to a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a>, select a interpolation mode with |
| <a class="link" href="GstInterpolationControlSource.html#gst-interpolation-control-source-set-interpolation-mode" title="gst_interpolation_control_source_set_interpolation_mode ()"><code class="function">gst_interpolation_control_source_set_interpolation_mode()</code></a> and set some control points by calling |
| <a class="link" href="GstInterpolationControlSource.html#gst-interpolation-control-source-set" title="gst_interpolation_control_source_set ()"><code class="function">gst_interpolation_control_source_set()</code></a>. |
| </p> |
| <p> |
| All functions are MT-safe. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="GstInterpolationControlSource.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="GstInterpolationControlSource-struct"></a><h3>struct GstInterpolationControlSource</h3> |
| <pre class="programlisting">struct GstInterpolationControlSource;</pre> |
| <p> |
| The instance structure of <a class="link" href="GstControlSource.html" title="GstControlSource"><span class="type">GstControlSource</span></a>. |
| </p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstInterpolateMode"></a><h3>enum GstInterpolateMode</h3> |
| <pre class="programlisting">typedef enum { |
| GST_INTERPOLATE_NONE, |
| GST_INTERPOLATE_TRIGGER, |
| GST_INTERPOLATE_LINEAR, |
| GST_INTERPOLATE_QUADRATIC, |
| GST_INTERPOLATE_CUBIC, |
| GST_INTERPOLATE_USER |
| } GstInterpolateMode; |
| </pre> |
| <p> |
| The various interpolation modes available. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><a name="GST-INTERPOLATE-NONE:CAPS"></a><span class="term"><code class="literal">GST_INTERPOLATE_NONE</code></span></p></td> |
| <td>steps-like interpolation, default |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-INTERPOLATE-TRIGGER:CAPS"></a><span class="term"><code class="literal">GST_INTERPOLATE_TRIGGER</code></span></p></td> |
| <td>returns the default value of the property, |
| except for times with specific values |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-INTERPOLATE-LINEAR:CAPS"></a><span class="term"><code class="literal">GST_INTERPOLATE_LINEAR</code></span></p></td> |
| <td>linear interpolation |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-INTERPOLATE-QUADRATIC:CAPS"></a><span class="term"><code class="literal">GST_INTERPOLATE_QUADRATIC</code></span></p></td> |
| <td>square interpolation (deprecated, maps to cubic) |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-INTERPOLATE-CUBIC:CAPS"></a><span class="term"><code class="literal">GST_INTERPOLATE_CUBIC</code></span></p></td> |
| <td>cubic interpolation |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-INTERPOLATE-USER:CAPS"></a><span class="term"><code class="literal">GST_INTERPOLATE_USER</code></span></p></td> |
| <td>user-provided interpolation (not yet available) |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-interpolation-control-source-new"></a><h3>gst_interpolation_control_source_new ()</h3> |
| <pre class="programlisting"><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="returnvalue">GstInterpolationControlSource</span></a> * gst_interpolation_control_source_new |
| (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> |
| <p> |
| This returns a new, unbound <a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a>. |
| </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>a new, unbound <a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a>.</td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-interpolation-control-source-set"></a><h3>gst_interpolation_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_interpolation_control_source_set |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-0.11/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> timestamp</code></em>, |
| <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</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="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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-interpolation-control-source-set-from-list"></a><h3>gst_interpolation_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_interpolation_control_source_set_from_list |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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 class="link" href="GstControlSource.html#GstTimedValue" title="struct GstTimedValue"><span class="type">GstTimedValue</span></a> items</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-interpolation-control-source-set-interpolation-mode"></a><h3>gst_interpolation_control_source_set_interpolation_mode ()</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_interpolation_control_source_set_interpolation_mode |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html#GstInterpolateMode" title="enum GstInterpolateMode"><span class="type">GstInterpolateMode</span></a> mode</code></em>);</pre> |
| <p> |
| Sets the given interpolation mode. |
| </p> |
| <p> |
| </p> |
| <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"> |
| <h3 class="title">Note</h3> |
| <p>User interpolation is not yet available and quadratic interpolation |
| is deprecated and maps to cubic interpolation.</p> |
| </div> |
| <p> |
| </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="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> object</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td> |
| <td>interpolation mode</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the interpolation mode could be set, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-interpolation-control-source-get-all"></a><h3>gst_interpolation_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_interpolation_control_source_get_all |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>);</pre> |
| <p> |
| Returns a read-only copy of the list of <a class="link" href="GstControlSource.html#GstTimedValue" title="struct 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="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-interpolation-control-source-unset"></a><h3>gst_interpolation_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_interpolation_control_source_unset |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>, |
| <em class="parameter"><code><a href="../gstreamer-0.11/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="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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-interpolation-control-source-unset-all"></a><h3>gst_interpolation_control_source_unset_all ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_interpolation_control_source_unset_all |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> object</td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-interpolation-control-source-get-count"></a><h3>gst_interpolation_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_interpolation_control_source_get_count |
| (<em class="parameter"><code><a class="link" href="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</span></a> *self</code></em>);</pre> |
| <p> |
| Returns 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="GstInterpolationControlSource.html" title="GstInterpolationControlSource"><span class="type">GstInterpolationControlSource</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> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr> |
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