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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>GstGhostPad</title>
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<h2><span class="refentrytitle"><a name="GstGhostPad.top_of_page"></a>GstGhostPad</span></h2>
<p>GstGhostPad — Pseudo link pads</p>
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<div class="refsynopsisdiv">
<a name="GstGhostPad.synopsis"></a><h2>Synopsis</h2>
<a name="GstProxyPad"></a><pre class="synopsis">
#include <gst/gst.h>
struct <a class="link" href="GstGhostPad.html#GstProxyPad-struct" title="struct GstProxyPad">GstProxyPad</a>;
struct <a class="link" href="GstGhostPad.html#GstGhostPad-struct" title="struct GstGhostPad">GstGhostPad</a>;
<a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * <a class="link" href="GstGhostPad.html#gst-ghost-pad-new" title="gst_ghost_pad_new ()">gst_ghost_pad_new</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *target</code></em>);
<a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * <a class="link" href="GstGhostPad.html#gst-ghost-pad-new-no-target" title="gst_ghost_pad_new_no_target ()">gst_ghost_pad_new_no_target</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html#GstPadDirection" title="enum GstPadDirection"><span class="type">GstPadDirection</span></a> dir</code></em>);
<a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * <a class="link" href="GstGhostPad.html#gst-ghost-pad-new-from-template" title="gst_ghost_pad_new_from_template ()">gst_ghost_pad_new_from_template</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *target</code></em>,
<em class="parameter"><code><a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a> *templ</code></em>);
<a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * <a class="link" href="GstGhostPad.html#gst-ghost-pad-new-no-target-from-template" title="gst_ghost_pad_new_no_target_from_template ()">gst_ghost_pad_new_no_target_from_template</a>
(<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a> *templ</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="GstGhostPad.html#gst-ghost-pad-set-target" title="gst_ghost_pad_set_target ()">gst_ghost_pad_set_target</a> (<em class="parameter"><code><a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a> *gpad</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *newtarget</code></em>);
<a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * <a class="link" href="GstGhostPad.html#gst-ghost-pad-get-target" title="gst_ghost_pad_get_target ()">gst_ghost_pad_get_target</a> (<em class="parameter"><code><a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a> *gpad</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="GstGhostPad.html#gst-ghost-pad-construct" title="gst_ghost_pad_construct ()">gst_ghost_pad_construct</a> (<em class="parameter"><code><a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a> *gpad</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstGhostPad.html#gst-ghost-pad-unlink-default" title="gst_ghost_pad_unlink_default ()">gst_ghost_pad_unlink_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>);
<a class="link" href="GstPad.html#GstPadLinkReturn" title="enum GstPadLinkReturn"><span class="returnvalue">GstPadLinkReturn</span></a> <a class="link" href="GstGhostPad.html#gst-ghost-pad-link-default" title="gst_ghost_pad_link_default ()">gst_ghost_pad_link_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *peer</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="GstGhostPad.html#gst-ghost-pad-activate-pull-default" title="gst_ghost_pad_activate_pull_default ()">gst_ghost_pad_activate_pull_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</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="GstGhostPad.html#gst-ghost-pad-activate-push-default" title="gst_ghost_pad_activate_push_default ()">gst_ghost_pad_activate_push_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</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="GstGhostPad.html#gst-ghost-pad-internal-activate-push-default" title="gst_ghost_pad_internal_activate_push_default ()">gst_ghost_pad_internal_activate_push_default</a>
(<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</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="GstGhostPad.html#gst-ghost-pad-internal-activate-pull-default" title="gst_ghost_pad_internal_activate_pull_default ()">gst_ghost_pad_internal_activate_pull_default</a>
(<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</code></em>);
<a class="link" href="GstGhostPad.html#GstProxyPad"><span class="returnvalue">GstProxyPad</span></a> * <a class="link" href="GstGhostPad.html#gst-proxy-pad-get-internal" title="gst_proxy_pad_get_internal ()">gst_proxy_pad_get_internal</a> (<em class="parameter"><code><a class="link" href="GstGhostPad.html#GstProxyPad"><span class="type">GstProxyPad</span></a> *pad</code></em>);
const <a class="link" href="gstreamer-GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="returnvalue">GstQueryType</span></a> * <a class="link" href="GstGhostPad.html#gst-proxy-pad-query-type-default" title="gst_proxy_pad_query_type_default ()">gst_proxy_pad_query_type_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</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="GstGhostPad.html#gst-proxy-pad-event-default" title="gst_proxy_pad_event_default ()">gst_proxy_pad_event_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstEvent.html#GstEvent" title="struct GstEvent"><span class="type">GstEvent</span></a> *event</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="GstGhostPad.html#gst-proxy-pad-query-default" title="gst_proxy_pad_query_default ()">gst_proxy_pad_query_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstQuery.html#GstQuery" title="struct GstQuery"><span class="type">GstQuery</span></a> *query</code></em>);
<a class="link" href="gstreamer-GstIterator.html#GstIterator" title="struct GstIterator"><span class="returnvalue">GstIterator</span></a> * <a class="link" href="GstGhostPad.html#gst-proxy-pad-iterate-internal-links-default" title="gst_proxy_pad_iterate_internal_links_default ()">gst_proxy_pad_iterate_internal_links_default</a>
(<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>);
<a class="link" href="GstPad.html#GstFlowReturn" title="enum GstFlowReturn"><span class="returnvalue">GstFlowReturn</span></a> <a class="link" href="GstGhostPad.html#gst-proxy-pad-chain-default" title="gst_proxy_pad_chain_default ()">gst_proxy_pad_chain_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>);
<a class="link" href="GstPad.html#GstFlowReturn" title="enum GstFlowReturn"><span class="returnvalue">GstFlowReturn</span></a> <a class="link" href="GstGhostPad.html#gst-proxy-pad-chain-list-default" title="gst_proxy_pad_chain_list_default ()">gst_proxy_pad_chain_list_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstBufferList.html#GstBufferList" title="GstBufferList"><span class="type">GstBufferList</span></a> *list</code></em>);
<a class="link" href="GstPad.html#GstFlowReturn" title="enum GstFlowReturn"><span class="returnvalue">GstFlowReturn</span></a> <a class="link" href="GstGhostPad.html#gst-proxy-pad-getrange-default" title="gst_proxy_pad_getrange_default ()">gst_proxy_pad_getrange_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a> offset</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> size</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a> **buffer</code></em>);
<a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="returnvalue">GstCaps</span></a> * <a class="link" href="GstGhostPad.html#gst-proxy-pad-getcaps-default" title="gst_proxy_pad_getcaps_default ()">gst_proxy_pad_getcaps_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *filter</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="GstGhostPad.html#gst-proxy-pad-acceptcaps-default" title="gst_proxy_pad_acceptcaps_default ()">gst_proxy_pad_acceptcaps_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstGhostPad.html#gst-proxy-pad-fixatecaps-default" title="gst_proxy_pad_fixatecaps_default ()">gst_proxy_pad_fixatecaps_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstGhostPad.html#gst-proxy-pad-unlink-default" title="gst_proxy_pad_unlink_default ()">gst_proxy_pad_unlink_default</a> (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="GstGhostPad.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="GstPad.html" title="GstPad">GstPad</a>
+----GstProxyPad
+----<a class="link" href="GstGhostPad.html" title="GstGhostPad">GstGhostPad</a>
</pre>
<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="GstPad.html" title="GstPad">GstPad</a>
+----<a class="link" href="GstGhostPad.html#GstProxyPad">GstProxyPad</a>
+----GstGhostPad
</pre>
</div>
<div class="refsect1">
<a name="GstGhostPad.description"></a><h2>Description</h2>
<p>
GhostPads are useful when organizing pipelines with <a class="link" href="GstBin.html" title="GstBin"><span class="type">GstBin</span></a> like elements.
The idea here is to create hierarchical element graphs. The bin element
contains a sub-graph. Now one would like to treat the bin-element like any
other <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a>. This is where GhostPads come into play. A GhostPad acts as
a proxy for another pad. Thus the bin can have sink and source ghost-pads
that are associated with sink and source pads of the child elements.
</p>
<p>
If the target pad is known at creation time, <a class="link" href="GstGhostPad.html#gst-ghost-pad-new" title="gst_ghost_pad_new ()"><code class="function">gst_ghost_pad_new()</code></a> is the
function to use to get a ghost-pad. Otherwise one can use <a class="link" href="GstGhostPad.html#gst-ghost-pad-new-no-target" title="gst_ghost_pad_new_no_target ()"><code class="function">gst_ghost_pad_new_no_target()</code></a>
to create the ghost-pad and use <a class="link" href="GstGhostPad.html#gst-ghost-pad-set-target" title="gst_ghost_pad_set_target ()"><code class="function">gst_ghost_pad_set_target()</code></a> to establish the
association later on.
</p>
<p>
Note that GhostPads add overhead to the data processing of a pipeline.
</p>
<p>
Last reviewed on 2005-11-18 (0.9.5)
</p>
</div>
<div class="refsect1">
<a name="GstGhostPad.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstProxyPad-struct"></a><h3>struct GstProxyPad</h3>
<pre class="programlisting">struct GstProxyPad;</pre>
</div>
<hr>
<div class="refsect2">
<a name="GstGhostPad-struct"></a><h3>struct GstGhostPad</h3>
<pre class="programlisting">struct GstGhostPad;</pre>
<p>
Opaque <a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a> structure.
</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-new"></a><h3>gst_ghost_pad_new ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * gst_ghost_pad_new (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *target</code></em>);</pre>
<p>
Create a new ghostpad with <em class="parameter"><code>target</code></em> as the target. The direction will be taken
from the target pad. <em class="parameter"><code>target</code></em> must be unlinked.
</p>
<p>
Will ref the target.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>the name of the new pad, or NULL to assign a default name. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>target</code></em> :</span></p></td>
<td>the pad to ghost. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, or NULL in case of an error. <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>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-new-no-target"></a><h3>gst_ghost_pad_new_no_target ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * gst_ghost_pad_new_no_target (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html#GstPadDirection" title="enum GstPadDirection"><span class="type">GstPadDirection</span></a> dir</code></em>);</pre>
<p>
Create a new ghostpad without a target with the given direction.
A target can be set on the ghostpad later with the
<a class="link" href="GstGhostPad.html#gst-ghost-pad-set-target" title="gst_ghost_pad_set_target ()"><code class="function">gst_ghost_pad_set_target()</code></a> function.
</p>
<p>
The created ghostpad will not have a padtemplate.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>the name of the new pad, or NULL to assign a default name. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>dir</code></em> :</span></p></td>
<td>the direction of the ghostpad</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, or NULL in case of an error. <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>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-new-from-template"></a><h3>gst_ghost_pad_new_from_template ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * gst_ghost_pad_new_from_template (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *target</code></em>,
<em class="parameter"><code><a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a> *templ</code></em>);</pre>
<p>
Create a new ghostpad with <em class="parameter"><code>target</code></em> as the target. The direction will be taken
from the target pad. The template used on the ghostpad will be <em class="parameter"><code>template</code></em>.
</p>
<p>
Will ref the target.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>the name of the new pad, or NULL to assign a default name. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>target</code></em> :</span></p></td>
<td>the pad to ghost. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>templ</code></em> :</span></p></td>
<td>the <a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a> to use on the ghostpad. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, or NULL in case of an error. <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>
<p class="since">Since 0.10.10</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-new-no-target-from-template"></a><h3>gst_ghost_pad_new_no_target_from_template ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * gst_ghost_pad_new_no_target_from_template
(<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a> *templ</code></em>);</pre>
<p>
Create a new ghostpad based on <em class="parameter"><code>templ</code></em>, without setting a target. The
direction will be taken from the <em class="parameter"><code>templ</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>the name of the new pad, or NULL to assign a default name. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>templ</code></em> :</span></p></td>
<td>the <a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a> to create the ghostpad from. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, or NULL in case of an error. <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>
<p class="since">Since 0.10.10</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-set-target"></a><h3>gst_ghost_pad_set_target ()</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_ghost_pad_set_target (<em class="parameter"><code><a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a> *gpad</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *newtarget</code></em>);</pre>
<p>
Set the new target of the ghostpad <em class="parameter"><code>gpad</code></em>. Any existing target
is unlinked and links to the new target are established. if <em class="parameter"><code>newtarget</code></em> is
NULL the target will be cleared.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gpad</code></em> :</span></p></td>
<td>the <a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>newtarget</code></em> :</span></p></td>
<td>the new pad target. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if the new target could be set. This function
can return FALSE when the internal pads could not be linked. <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>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-get-target"></a><h3>gst_ghost_pad_get_target ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html" title="GstPad"><span class="returnvalue">GstPad</span></a> * gst_ghost_pad_get_target (<em class="parameter"><code><a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a> *gpad</code></em>);</pre>
<p>
Get the target pad of <em class="parameter"><code>gpad</code></em>. Unref target pad after usage.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gpad</code></em> :</span></p></td>
<td>the <a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the target <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, can be NULL if the ghostpad
has no target set. Unref target pad after usage. <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>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-construct"></a><h3>gst_ghost_pad_construct ()</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_ghost_pad_construct (<em class="parameter"><code><a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a> *gpad</code></em>);</pre>
<p>
Finish initialization of a newly allocated ghost pad.
</p>
<p>
This function is most useful in language bindings and when subclassing
<a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a>; plugin and application developers normally will not call this
function. Call this function directly after a call to g_object_new
(GST_TYPE_GHOST_PAD, "direction", <em class="parameter"><code>dir</code></em>, ..., NULL).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gpad</code></em> :</span></p></td>
<td>the newly allocated ghost pad</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 construction succeeds, <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>
<p class="since">Since 0.10.22</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-unlink-default"></a><h3>gst_ghost_pad_unlink_default ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_ghost_pad_unlink_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>);</pre>
<p>
Invoke the default unlink function of a ghost pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to link.</td>
</tr></tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-link-default"></a><h3>gst_ghost_pad_link_default ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html#GstPadLinkReturn" title="enum GstPadLinkReturn"><span class="returnvalue">GstPadLinkReturn</span></a> gst_ghost_pad_link_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *peer</code></em>);</pre>
<p>
Invoke the default link function of a ghost pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to link.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>peer</code></em> :</span></p></td>
<td>the <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> peer</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a class="link" href="GstPad.html#GstPadLinkReturn" title="enum GstPadLinkReturn"><span class="type">GstPadLinkReturn</span></a> of the operation</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-activate-pull-default"></a><h3>gst_ghost_pad_activate_pull_default ()</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_ghost_pad_activate_pull_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</code></em>);</pre>
<p>
Invoke the default activate pull function of a ghost pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to activate or deactivate.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>active</code></em> :</span></p></td>
<td>whether the pad should be active or not.</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 operation was successful.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-activate-push-default"></a><h3>gst_ghost_pad_activate_push_default ()</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_ghost_pad_activate_push_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</code></em>);</pre>
<p>
Invoke the default activate push function of a ghost pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to activate or deactivate.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>active</code></em> :</span></p></td>
<td>whether the pad should be active or not.</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 operation was successful.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-internal-activate-push-default"></a><h3>gst_ghost_pad_internal_activate_push_default ()</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_ghost_pad_internal_activate_push_default
(<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</code></em>);</pre>
<p>
Invoke the default activate push function of a proxy pad that is
owned by a ghost pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to activate or deactivate.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>active</code></em> :</span></p></td>
<td>whether the pad should be active or not.</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 operation was successful.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-ghost-pad-internal-activate-pull-default"></a><h3>gst_ghost_pad_internal_activate_pull_default ()</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_ghost_pad_internal_activate_pull_default
(<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</code></em>);</pre>
<p>
Invoke the default activate pull function of a proxy pad that is
owned by a ghost pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to activate or deactivate.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>active</code></em> :</span></p></td>
<td>whether the pad should be active or not.</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 operation was successful.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-get-internal"></a><h3>gst_proxy_pad_get_internal ()</h3>
<pre class="programlisting"><a class="link" href="GstGhostPad.html#GstProxyPad"><span class="returnvalue">GstProxyPad</span></a> * gst_proxy_pad_get_internal (<em class="parameter"><code><a class="link" href="GstGhostPad.html#GstProxyPad"><span class="type">GstProxyPad</span></a> *pad</code></em>);</pre>
<p>
Get the internal pad of <em class="parameter"><code>pad</code></em>. Unref target pad after usage.
</p>
<p>
The internal pad of a <a class="link" href="GstGhostPad.html" title="GstGhostPad"><span class="type">GstGhostPad</span></a> is the internally used
pad of opposite direction, which is used to link to the target.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>the <a class="link" href="GstGhostPad.html#GstProxyPad"><span class="type">GstProxyPad</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the target <a class="link" href="GstGhostPad.html#GstProxyPad"><span class="type">GstProxyPad</span></a>, can be NULL.
Unref target pad after usage. <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>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-query-type-default"></a><h3>gst_proxy_pad_query_type_default ()</h3>
<pre class="programlisting">const <a class="link" href="gstreamer-GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="returnvalue">GstQueryType</span></a> * gst_proxy_pad_query_type_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>);</pre>
<p>
Invoke the default query type handler of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a zero-terminated array
of <a class="link" href="gstreamer-GstQuery.html#GstQueryType" title="enum GstQueryType"><span class="type">GstQueryType</span></a>. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-event-default"></a><h3>gst_proxy_pad_event_default ()</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_proxy_pad_event_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstEvent.html#GstEvent" title="struct GstEvent"><span class="type">GstEvent</span></a> *event</code></em>);</pre>
<p>
Invoke the default event of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to push the event to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td>
<td>the <a class="link" href="gstreamer-GstEvent.html#GstEvent" title="struct GstEvent"><span class="type">GstEvent</span></a> to send to the pad. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if the event was handled.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-query-default"></a><h3>gst_proxy_pad_query_default ()</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_proxy_pad_query_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstQuery.html#GstQuery" title="struct GstQuery"><span class="type">GstQuery</span></a> *query</code></em>);</pre>
<p>
Invoke the default query function of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to invoke the default query on.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>query</code></em> :</span></p></td>
<td>the <a class="link" href="gstreamer-GstQuery.html#GstQuery" title="struct GstQuery"><span class="type">GstQuery</span></a> to perform. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if the query could be performed.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-iterate-internal-links-default"></a><h3>gst_proxy_pad_iterate_internal_links_default ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-GstIterator.html#GstIterator" title="struct GstIterator"><span class="returnvalue">GstIterator</span></a> * gst_proxy_pad_iterate_internal_links_default
(<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-chain-default"></a><h3>gst_proxy_pad_chain_default ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html#GstFlowReturn" title="enum GstFlowReturn"><span class="returnvalue">GstFlowReturn</span></a> gst_proxy_pad_chain_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>);</pre>
<p>
Invoke the default chain function of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a sink <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, returns GST_FLOW_ERROR if not.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>the <a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a> to send, return GST_FLOW_ERROR
if not. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="GstPad.html#GstFlowReturn" title="enum GstFlowReturn"><span class="type">GstFlowReturn</span></a> from the pad.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-chain-list-default"></a><h3>gst_proxy_pad_chain_list_default ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html#GstFlowReturn" title="enum GstFlowReturn"><span class="returnvalue">GstFlowReturn</span></a> gst_proxy_pad_chain_list_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstBufferList.html#GstBufferList" title="GstBufferList"><span class="type">GstBufferList</span></a> *list</code></em>);</pre>
<p>
Invoke the default chain list function of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a sink <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, returns GST_FLOW_ERROR if not.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>list</code></em> :</span></p></td>
<td>the <a class="link" href="gstreamer-GstBufferList.html#GstBufferList" title="GstBufferList"><span class="type">GstBufferList</span></a> to send, return GST_FLOW_ERROR
if not. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="GstPad.html#GstFlowReturn" title="enum GstFlowReturn"><span class="type">GstFlowReturn</span></a> from the pad.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-getrange-default"></a><h3>gst_proxy_pad_getrange_default ()</h3>
<pre class="programlisting"><a class="link" href="GstPad.html#GstFlowReturn" title="enum GstFlowReturn"><span class="returnvalue">GstFlowReturn</span></a> gst_proxy_pad_getrange_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a> offset</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> size</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a> **buffer</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-getcaps-default"></a><h3>gst_proxy_pad_getcaps_default ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="returnvalue">GstCaps</span></a> * gst_proxy_pad_getcaps_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *filter</code></em>);</pre>
<p>
Invoke the default getcaps function of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to get the capabilities of.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>filter</code></em> :</span></p></td>
<td>a <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> filter.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the caps of the pad with incremented ref-count. <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>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-acceptcaps-default"></a><h3>gst_proxy_pad_acceptcaps_default ()</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_proxy_pad_acceptcaps_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>
Invoke the default acceptcaps function of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to check</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
<td>a <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> to check on the pad</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if the pad can accept the caps.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-fixatecaps-default"></a><h3>gst_proxy_pad_fixatecaps_default ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_proxy_pad_fixatecaps_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>
Invoke the default fixatecaps function of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to fixate</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
<td>the <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> to fixate</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-proxy-pad-unlink-default"></a><h3>gst_proxy_pad_unlink_default ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_proxy_pad_unlink_default (<em class="parameter"><code><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> *pad</code></em>);</pre>
<p>
Invoke the default unlink function of the proxy pad.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td>
<td>a <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a> to unlink</td>
</tr></tbody>
</table></div>
<p class="since">Since 0.10.35</p>
</div>
</div>
<div class="refsect1">
<a name="GstGhostPad.see-also"></a><h2>See Also</h2>
<a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>
</div>
</div>
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