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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GstGLDisplay: GStreamer Bad Plugins 1.0 Library Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="GStreamer Bad Plugins 1.0 Library Reference Manual">
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<meta name="generator" content="GTK-Doc V1.24 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#GstGLDisplay.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#GstGLDisplay.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_signals">  <span class="dim">|</span> 
                  <a href="#GstGLDisplay.signals" class="shortcut">Signals</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="gl.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="gst-plugins-bad-libs-GstGLContextWGL.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="gst-plugins-bad-libs-GstEGLImageMemory.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="GstGLDisplay"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GstGLDisplay.top_of_page"></a>GstGLDisplay</span></h2>
<p>GstGLDisplay — window system display connection abstraction</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GstGLDisplay.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="returnvalue">GstGLDisplay</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-gl-display-new" title="gst_gl_display_new ()">gst_gl_display_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstGLDisplay.html#GstGLDisplayType" title="enum GstGLDisplayType"><span class="returnvalue">GstGLDisplayType</span></a>
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-gl-display-get-handle-type" title="gst_gl_display_get_handle_type ()">gst_gl_display_get_handle_type</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-gl-display-filter-gl-api" title="gst_gl_display_filter_gl_api ()">gst_gl_display_filter_gl_api</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gst-plugins-bad-libs-GstGLAPI.html#GstGLAPI" title="enum GstGLAPI"><span class="returnvalue">GstGLAPI</span></a>
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-gl-display-get-gl-api" title="gst_gl_display_get_gl_api ()">gst_gl_display_get_gl_api</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-gl-display-add-context" title="gst_gl_display_add_context ()">gst_gl_display_add_context</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstGLContext.html" title="GstGLContext"><span class="returnvalue">GstGLContext</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-gl-display-get-gl-context-for-thread" title="gst_gl_display_get_gl_context_for_thread ()">gst_gl_display_get_gl_context_for_thread</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guintptr"><span class="returnvalue">guintptr</span></a>
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-gl-display-get-handle" title="gst_gl_display_get_handle ()">gst_gl_display_get_handle</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-gl-display-create-context" title="gst_gl_display_create_context ()">gst_gl_display_create_context</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-context-get-gl-display" title="gst_context_get_gl_display ()">gst_context_get_gl_display</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstGLDisplay.html#gst-context-set-gl-display" title="gst_context_set_gl_display ()">gst_context_set_gl_display</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstGLDisplay.signals"></a><h2>Signals</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody><tr>
<td class="signal_type">
<a class="link" href="GstGLContext.html" title="GstGLContext"><span class="returnvalue">GstGLContext</span></a>*</td>
<td class="signal_name"><a class="link" href="GstGLDisplay.html#GstGLDisplay-create-context" title="The “create-context” signal">create-context</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstGLDisplay.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstGLDisplay.html#GST-GL-DISPLAY-CONTEXT-TYPE:CAPS" title="GST_GL_DISPLAY_CONTEXT_TYPE">GST_GL_DISPLAY_CONTEXT_TYPE</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="GstGLDisplay.html#GstGLDisplayType" title="enum GstGLDisplayType">GstGLDisplayType</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GstGLDisplay.html#GstGLDisplay-struct" title="GstGLDisplay">GstGLDisplay</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstGLDisplay.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html">GstObject</a>
            <span class="lineart">╰──</span> GstGLDisplay
</pre>
</div>
<div class="refsect1">
<a name="GstGLDisplay.description"></a><h2>Description</h2>
<p><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> represents a connection to the underlying windowing system. 
Elements are required to make use of <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html"><span class="type">GstContext</span></a> to share and propogate
a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a>.</p>
<p>There are a number of environment variables that influence the choice of
platform and window system specific functionality.</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>GST_GL_WINDOW influences the window system to use.  Common values are
'x11', 'wayland', 'win32' or 'cocoa'.</p></li>
<li class="listitem"><p>GST_GL_PLATFORM influences the OpenGL platform to use.  Common values are
'egl', 'glx', 'wgl' or 'cgl'.</p></li>
<li class="listitem"><p>GST_GL_API influences the OpenGL API requested by the OpenGL platform.
Common values are 'opengl' and 'gles2'.</p></li>
</ul></div>
<div class="note">Certain window systems require a special function to be called to
initialize threading support.  As this GStreamer GL library does not preclude
concurrent access to the windowing system, it is strongly advised that
applications ensure that threading support has been initialized before any
other toolkit/library functionality is accessed.  Failure to do so could
result in sudden application abortion during execution.  The most notably
example of such a function is X11's <code class="function">XInitThreads()</code>.</div>
</div>
<div class="refsect1">
<a name="GstGLDisplay.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-gl-display-new"></a><h3>gst_gl_display_new ()</h3>
<pre class="programlisting"><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="returnvalue">GstGLDisplay</span></a> *
gst_gl_display_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.9.14.8.2.4"></a><h4>Returns</h4>
<p> a new <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: 1.4</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-display-get-handle-type"></a><h3>gst_gl_display_get_handle_type ()</h3>
<pre class="programlisting"><a class="link" href="GstGLDisplay.html#GstGLDisplayType" title="enum GstGLDisplayType"><span class="returnvalue">GstGLDisplayType</span></a>
gst_gl_display_get_handle_type (<em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *display</code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.9.14.8.3.4"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.9.14.8.3.5"></a><h4>Returns</h4>
<p> the <a class="link" href="GstGLDisplay.html#GstGLDisplayType" title="enum GstGLDisplayType"><span class="type">GstGLDisplayType</span></a> of <em class="parameter"><code>display</code></em>
</p>
</div>
<p class="since">Since: 1.4</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-display-filter-gl-api"></a><h3>gst_gl_display_filter_gl_api ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_gl_display_filter_gl_api (<em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *display</code></em>,
                              <em class="parameter"><code><a class="link" href="gst-plugins-bad-libs-GstGLAPI.html#GstGLAPI" title="enum GstGLAPI"><span class="type">GstGLAPI</span></a> gl_api</code></em>);</pre>
<p>limit the use of OpenGL to the requested <em class="parameter"><code>gl_api</code></em>
.  This is intended to allow
application and elements to request a specific set of OpenGL API's based on
what they support.  See <a class="link" href="GstGLContext.html#gst-gl-context-get-gl-api" title="gst_gl_context_get_gl_api ()"><code class="function">gst_gl_context_get_gl_api()</code></a> for the retreiving the
API supported by a <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.9.14.8.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>gl_api</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-bad-libs-GstGLAPI.html#GstGLAPI" title="enum GstGLAPI"><span class="type">GstGLAPI</span></a> to filter with</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-display-get-gl-api"></a><h3>gst_gl_display_get_gl_api ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-bad-libs-GstGLAPI.html#GstGLAPI" title="enum GstGLAPI"><span class="returnvalue">GstGLAPI</span></a>
gst_gl_display_get_gl_api (<em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *display</code></em>);</pre>
<p>see <a class="link" href="GstGLDisplay.html#gst-gl-display-filter-gl-api" title="gst_gl_display_filter_gl_api ()"><code class="function">gst_gl_display_filter_gl_api()</code></a> for what the returned value represents</p>
<div class="refsect3">
<a name="id-1.2.9.14.8.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.9.14.8.5.6"></a><h4>Returns</h4>
<p> the <a class="link" href="gst-plugins-bad-libs-GstGLAPI.html#GstGLAPI" title="enum GstGLAPI"><span class="type">GstGLAPI</span></a> configured for <em class="parameter"><code>display</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-display-add-context"></a><h3>gst_gl_display_add_context ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_gl_display_add_context (<em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *display</code></em>,
                            <em class="parameter"><code><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> *context</code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.9.14.8.6.4"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p> a <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.9.14.8.6.5"></a><h4>Returns</h4>
<p> whether <em class="parameter"><code>context</code></em>
was successfully added. <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> may be returned
if there already exists another context for <em class="parameter"><code>context</code></em>
's active thread.</p>
<p>Must be called with the object lock held.</p>
</div>
<p class="since">Since: 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-display-get-gl-context-for-thread"></a><h3>gst_gl_display_get_gl_context_for_thread ()</h3>
<pre class="programlisting"><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="returnvalue">GstGLContext</span></a> *
gst_gl_display_get_gl_context_for_thread
                               (<em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *display</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Threads.html#GThread"><span class="type">GThread</span></a> *thread</code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.9.14.8.7.4"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>thread</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/glib/glib-Threads.html#GThread"><span class="type">GThread</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.9.14.8.7.5"></a><h4>Returns</h4>
<p> the <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> current on <em class="parameter"><code>thread</code></em>
or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p>
<p>Must be called with the object lock held. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-display-get-handle"></a><h3>gst_gl_display_get_handle ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guintptr"><span class="returnvalue">guintptr</span></a>
gst_gl_display_get_handle (<em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *display</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-display-create-context"></a><h3>gst_gl_display_create_context ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_gl_display_create_context (<em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *display</code></em>,
                               <em class="parameter"><code><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> *other_context</code></em>,
                               <em class="parameter"><code><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> **p_context</code></em>,
                               <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>It requires the display's object lock to be held.</p>
<div class="refsect3">
<a name="id-1.2.9.14.8.9.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>other_context</p></td>
<td class="parameter_description"><p>other <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> to share resources with.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>p_context</p></td>
<td class="parameter_description"><p>resulting <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>resulting <a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.9.14.8.9.6"></a><h4>Returns</h4>
<p> whether a new context could be created.</p>
</div>
<p class="since">Since: 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-context-get-gl-display"></a><h3>gst_context_get_gl_display ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_context_get_gl_display (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html"><span class="type">GstContext</span></a> *context</code></em>,
                            <em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> **display</code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.9.14.8.10.4"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html"><span class="type">GstContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>resulting <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.9.14.8.10.5"></a><h4>Returns</h4>
<p> Whether <em class="parameter"><code>display</code></em>
was in <em class="parameter"><code>context</code></em>
</p>
</div>
<p class="since">Since: 1.4</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-context-set-gl-display"></a><h3>gst_context_set_gl_display ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_context_set_gl_display (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html"><span class="type">GstContext</span></a> *context</code></em>,
                            <em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *display</code></em>);</pre>
<p>Sets <em class="parameter"><code>display</code></em>
 on <em class="parameter"><code>context</code></em>
</p>
<div class="refsect3">
<a name="id-1.2.9.14.8.11.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html"><span class="type">GstContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>resulting <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.4</p>
</div>
</div>
<div class="refsect1">
<a name="GstGLDisplay.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GST-GL-DISPLAY-CONTEXT-TYPE:CAPS"></a><h3>GST_GL_DISPLAY_CONTEXT_TYPE</h3>
<pre class="programlisting">#define GST_GL_DISPLAY_CONTEXT_TYPE "gst.gl.GLDisplay"
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GstGLDisplayType"></a><h3>enum GstGLDisplayType</h3>
<div class="refsect3">
<a name="id-1.2.9.14.9.3.3"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GST-GL-DISPLAY-TYPE-NONE:CAPS"></a>GST_GL_DISPLAY_TYPE_NONE</p></td>
<td class="enum_member_description">
<p>no display type</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-GL-DISPLAY-TYPE-X11:CAPS"></a>GST_GL_DISPLAY_TYPE_X11</p></td>
<td class="enum_member_description">
<p>X11 display</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-GL-DISPLAY-TYPE-WAYLAND:CAPS"></a>GST_GL_DISPLAY_TYPE_WAYLAND</p></td>
<td class="enum_member_description">
<p>Wayland display</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-GL-DISPLAY-TYPE-COCOA:CAPS"></a>GST_GL_DISPLAY_TYPE_COCOA</p></td>
<td class="enum_member_description">
<p>Cocoa display</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-GL-DISPLAY-TYPE-WIN32:CAPS"></a>GST_GL_DISPLAY_TYPE_WIN32</p></td>
<td class="enum_member_description">
<p>Win32 display</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-GL-DISPLAY-TYPE-DISPMANX:CAPS"></a>GST_GL_DISPLAY_TYPE_DISPMANX</p></td>
<td class="enum_member_description">
<p>Dispmanx display</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-GL-DISPLAY-TYPE-EGL:CAPS"></a>GST_GL_DISPLAY_TYPE_EGL</p></td>
<td class="enum_member_description">
<p>EGL display</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-GL-DISPLAY-TYPE-ANY:CAPS"></a>GST_GL_DISPLAY_TYPE_ANY</p></td>
<td class="enum_member_description">
<p>any display type</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstGLDisplay-struct"></a><h3>GstGLDisplay</h3>
<pre class="programlisting">typedef struct _GstGLDisplay GstGLDisplay;</pre>
<p>The contents of a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> are private and should only be accessed
through the provided API</p>
</div>
</div>
<div class="refsect1">
<a name="GstGLDisplay.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="GstGLDisplay-create-context"></a><h3>The <code class="literal">“create-context”</code> signal</h3>
<pre class="programlisting"><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="returnvalue">GstGLContext</span></a>*
user_function (<a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> *object,
               <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> *context,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>      user_data)</pre>
<p>Overrides the <em class="parameter"><code>GstGLContext</code></em>
 creation mechanism.
It can be called in any thread and it is emitted with
display's object lock held.</p>
<div class="refsect3">
<a name="id-1.2.9.14.10.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>other context to share resources with.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.9.14.10.2.6"></a><h4>Returns</h4>
<p> the new context.</p>
</div>
<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
</div>
<div class="refsect1">
<a name="GstGLDisplay.see-also"></a><h2>See Also</h2>
<p><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html"><span class="type">GstContext</span></a>, <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a>, <a class="link" href="GstGLWindow.html" title="GstGLWindow"><span class="type">GstGLWindow</span></a></p>
</div>
</div>
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