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| <a href="#GstGhostPad.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#GstGhostPad.description" class="shortcut">Description</a> |
| | |
| <a href="#GstGhostPad.object-hierarchy" class="shortcut">Object Hierarchy</a> |
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| <div class="refentry"> |
| <a name="GstGhostPad"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="GstGhostPad.top_of_page"></a>GstGhostPad</span></h2> |
| <p>GstGhostPad — Pseudo link pads</p> |
| </td> |
| <td valign="top" align="right"></td> |
| </tr></table></div> |
| <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>); |
| <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-mode-default" title="gst_ghost_pad_activate_mode_default ()">gst_ghost_pad_activate_mode_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="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPad.html#GstPadMode" title="enum GstPadMode"><span class="type">GstPadMode</span></a> mode</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-mode-default" title="gst_ghost_pad_internal_activate_mode_default ()">gst_ghost_pad_internal_activate_mode_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="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPad.html#GstPadMode" title="enum GstPadMode"><span class="type">GstPadMode</span></a> mode</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>); |
| <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>, |
| <em class="parameter"><code><a class="link" href="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</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="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</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="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</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 class="link" href="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</code></em>, |
| <em class="parameter"><code><span class="type">guint64</span> 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> |
| <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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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="Alias for transfer none, used for objects with floating refs."><span class="acronym">transfer floating</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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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> |
| </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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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> |
| </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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-ghost-pad-activate-mode-default"></a><h3>gst_ghost_pad_activate_mode_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_mode_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="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPad.html#GstPadMode" title="enum GstPadMode"><span class="type">GstPadMode</span></a> mode</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 mode function of a ghost pad. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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>parent</code></em> :</span></p></td> |
| <td>the parent of <em class="parameter"><code>pad</code></em> or NULL. <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>mode</code></em> :</span></p></td> |
| <td>the requested activation mode</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> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-ghost-pad-internal-activate-mode-default"></a><h3>gst_ghost_pad_internal_activate_mode_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_mode_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="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPad.html#GstPadMode" title="enum GstPadMode"><span class="type">GstPadMode</span></a> mode</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 mode function of a proxy pad that is |
| owned by a ghost pad. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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>parent</code></em> :</span></p></td> |
| <td>the parent of <em class="parameter"><code>pad</code></em> or NULL. <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>mode</code></em> :</span></p></td> |
| <td>the requested activation mode</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> |
| </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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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> |
| </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>, |
| <em class="parameter"><code><a class="link" href="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</code></em>);</pre> |
| <p> |
| Invoke the default iterate internal links function of the proxy pad. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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 get the internal links of.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>parent</code></em> :</span></p></td> |
| <td>the parent of <em class="parameter"><code>pad</code></em> or NULL. <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"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a <a class="link" href="gstreamer-GstIterator.html#GstIterator" title="struct GstIterator"><span class="type">GstIterator</span></a> of <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, or NULL if <em class="parameter"><code>pad</code></em> has no parent. Unref each |
| returned pad with <a class="link" href="GstObject.html#gst-object-unref" title="gst_object_unref ()"><code class="function">gst_object_unref()</code></a>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </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="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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>parent</code></em> :</span></p></td> |
| <td>the parent of <em class="parameter"><code>pad</code></em> or NULL. <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>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> |
| </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="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</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" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <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>parent</code></em> :</span></p></td> |
| <td>the parent of <em class="parameter"><code>pad</code></em> or NULL. <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>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> |
| </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 class="link" href="GstObject.html" title="GstObject"><span class="type">GstObject</span></a> *parent</code></em>, |
| <em class="parameter"><code><span class="type">guint64</span> 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> |
| <p> |
| returns <a class="link" href="GstPad.html#GST-FLOW-ERROR:CAPS"><span class="type">GST_FLOW_ERROR</span></a> if <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. |
| </p> |
| <p> |
| Invoke the default getrange function of the proxy pad. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>pad</code></em> :</span></p></td> |
| <td>a src <a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, returns <a class="link" href="GstPad.html#GST-FLOW-ERROR:CAPS"><span class="type">GST_FLOW_ERROR</span></a> if not.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>parent</code></em> :</span></p></td> |
| <td>the parent of <em class="parameter"><code>pad</code></em> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>offset</code></em> :</span></p></td> |
| <td>The start offset of the buffer</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>size</code></em> :</span></p></td> |
| <td>The length of the buffer</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>a pointer to hold the <a class="link" href="gstreamer-GstBuffer.html#GstBuffer" title="struct GstBuffer"><span class="type">GstBuffer</span></a>,. <span class="annotation">[<acronym title="Out parameter, where caller must allocate storage."><span class="acronym">out callee-allocates</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> |
| </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> |
| <div class="footer"> |
| <hr> |
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