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<a name="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.top_of_page"></a>GstGLUtils</span></h2>
<p>GstGLUtils — some miscellaneous utilities for OpenGL</p>
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</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.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 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="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-handle-set-context" title="gst_gl_handle_set_context ()">gst_gl_handle_set_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="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-handle-context-query" title="gst_gl_handle_context_query ()">gst_gl_handle_context_query</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="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-ensure-element-data" title="gst_gl_ensure_element_data ()">gst_gl_ensure_element_data</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="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-query-local-gl-context" title="gst_gl_query_local_gl_context ()">gst_gl_query_local_gl_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#gsize"><span class="returnvalue">gsize</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-get-plane-data-size" title="gst_gl_get_plane_data_size ()">gst_gl_get_plane_data_size</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#gsize"><span class="returnvalue">gsize</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-get-plane-start" title="gst_gl_get_plane_start ()">gst_gl_get_plane_start</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gst-plugins-base-libs-OpenGL-Formats.html#GstGLTextureTarget" title="enum GstGLTextureTarget"><span class="returnvalue">GstGLTextureTarget</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-value-get-texture-target-mask" title="gst_gl_value_get_texture_target_mask ()">gst_gl_value_get_texture_target_mask</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="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-value-set-texture-target" title="gst_gl_value_set_texture_target ()">gst_gl_value_set_texture_target</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="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-value-set-texture-target-from-mask" title="gst_gl_value_set_texture_target_from_mask ()">gst_gl_value_set_texture_target_from_mask</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="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-check-extension" title="gst_gl_check_extension ()">gst_gl_check_extension</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gst/gl/gl.h>
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-gl-handle-set-context"></a><h3>gst_gl_handle_set_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_handle_set_context (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct"><span class="type">GstElement</span></a> *element</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html#GstContext-struct"><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>,
<em class="parameter"><code><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> **other_context</code></em>);</pre>
<p>Helper function for implementing GstElement::<code class="function">set_context()</code> in OpenGL capable
elements.</p>
<p>Retrieve's the <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> or <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> in <em class="parameter"><code>context</code></em>
and places the
result in <em class="parameter"><code>display</code></em>
or <em class="parameter"><code>other_context</code></em>
respectively.</p>
<div class="refsect3">
<a name="gst-gl-handle-set-context.parameters"></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>element</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct"><span class="type">GstElement</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 href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html#GstContext-struct"><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>location of a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>other_context</p></td>
<td class="parameter_description"><p>location of 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="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-handle-set-context.returns"></a><h4>Returns</h4>
<p> whether the <em class="parameter"><code>display</code></em>
or <em class="parameter"><code>other_context</code></em>
could be set successfully</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-handle-context-query"></a><h3>gst_gl_handle_context_query ()</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_handle_context_query (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct"><span class="type">GstElement</span></a> *element</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstQuery.html#GstQuery-struct"><span class="type">GstQuery</span></a> *query</code></em>,
<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>,
<em class="parameter"><code><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> *other_context</code></em>);</pre>
<div class="refsect3">
<a name="gst-gl-handle-context-query.parameters"></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>element</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct"><span class="type">GstElement</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstQuery.html#GstQuery-struct"><span class="type">GstQuery</span></a> of type <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstQuery.html#GST-QUERY-CONTEXT:CAPS"><code class="literal">GST_QUERY_CONTEXT</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<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"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></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>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>other_context</p></td>
<td class="parameter_description"><p>application provided <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>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-handle-context-query.returns"></a><h4>Returns</h4>
<p> Whether the <em class="parameter"><code>query</code></em>
was successfully responded to from the passed
<em class="parameter"><code>display</code></em>
, <em class="parameter"><code>context</code></em>
, and <em class="parameter"><code>other_context</code></em>
.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-ensure-element-data"></a><h3>gst_gl_ensure_element_data ()</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_ensure_element_data (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> element</code></em>,
<em class="parameter"><code><a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> **display_ptr</code></em>,
<em class="parameter"><code><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> **other_context_ptr</code></em>);</pre>
<p>Perform the steps necessary for retrieving a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> and (optionally)
an application provided <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> from the surrounding elements or from
the application using the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html#GstContext-struct"><span class="type">GstContext</span></a> mechanism.</p>
<p>If the contents of <em class="parameter"><code>display_ptr</code></em>
or <em class="parameter"><code>other_context_ptr</code></em>
are not <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, then no
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html#GstContext-struct"><span class="type">GstContext</span></a> query is necessary for <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> or <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> retrieval
or is performed.</p>
<p>This performs <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html#GstContext-struct"><span class="type">GstContext</span></a> queries (if necessary) for a winsys display
connection with <a class="link" href="GstGLDisplay.html#GST-GL-DISPLAY-CONTEXT-TYPE:CAPS" title="GST_GL_DISPLAY_CONTEXT_TYPE"><code class="literal">GST_GL_DISPLAY_CONTEXT_TYPE</code></a>, "gst.x11.display.handle", and
"GstWaylandDisplayHandleContextType" stopping after the first successful
retrieval.</p>
<p>This also performs a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstContext.html#GstContext-struct"><span class="type">GstContext</span></a> query (if necessary) for an optional
application provided <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> using the name "gst.gl.app_context".
The returned <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> will be shared with a GStreamer created OpenGL context.</p>
<div class="refsect3">
<a name="gst-gl-ensure-element-data.parameters"></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>element</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct"><span class="type">GstElement</span></a> running the query</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>display_ptr</p></td>
<td class="parameter_description"><p>the resulting <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>other_context_ptr</p></td>
<td class="parameter_description"><p>the resulting <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="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-ensure-element-data.returns"></a><h4>Returns</h4>
<p> whether a <a class="link" href="GstGLDisplay.html" title="GstGLDisplay"><span class="type">GstGLDisplay</span></a> exists in <em class="parameter"><code>display_ptr</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-query-local-gl-context"></a><h3>gst_gl_query_local_gl_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_query_local_gl_context (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct"><span class="type">GstElement</span></a> *element</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPad.html#GstPadDirection"><span class="type">GstPadDirection</span></a> direction</code></em>,
<em class="parameter"><code><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a> **context_ptr</code></em>);</pre>
<p>Performs a GST_QUERY_CONTEXT query of type "gst.gl.local_context" on all
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPad.html#GstPad-struct"><span class="type">GstPads</span></a> in <em class="parameter"><code>element</code></em>
of <em class="parameter"><code>direction</code></em>
for the local OpenGL context used by
GStreamer elements.</p>
<div class="refsect3">
<a name="gst-gl-query-local-gl-context.parameters"></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>element</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct"><span class="type">GstElement</span></a> to query from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>direction</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPad.html#GstPadDirection"><span class="type">GstPadDirection</span></a> to query</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context_ptr</p></td>
<td class="parameter_description"><p>location containing the current and/or resulting
<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="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-query-local-gl-context.returns"></a><h4>Returns</h4>
<p> whether <em class="parameter"><code>context_ptr</code></em>
contains a <a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-get-plane-data-size"></a><h3>gst_gl_get_plane_data_size ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gsize"><span class="returnvalue">gsize</span></a>
gst_gl_get_plane_data_size (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-GstVideoAlignment.html#GstVideoInfo" title="struct GstVideoInfo"><span class="type">GstVideoInfo</span></a> *info</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-GstVideoAlignment.html#GstVideoAlignment" title="struct GstVideoAlignment"><span class="type">GstVideoAlignment</span></a> *align</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> plane</code></em>);</pre>
<p>Retrieve the size in bytes of a video plane of data with a certain alignment</p>
<div class="refsect3">
<a name="gst-gl-get-plane-data-size.parameters"></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>info</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-GstVideoAlignment.html#GstVideoInfo" title="struct GstVideoInfo"><span class="type">GstVideoInfo</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>align</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-GstVideoAlignment.html#GstVideoAlignment" title="struct GstVideoAlignment"><span class="type">GstVideoAlignment</span></a> or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>plane</p></td>
<td class="parameter_description"><p>plane number in <em class="parameter"><code>info</code></em>
to retrieve the data size of</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-get-plane-start"></a><h3>gst_gl_get_plane_start ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gsize"><span class="returnvalue">gsize</span></a>
gst_gl_get_plane_start (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-GstVideoAlignment.html#GstVideoInfo" title="struct GstVideoInfo"><span class="type">GstVideoInfo</span></a> *info</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-GstVideoAlignment.html#GstVideoAlignment" title="struct GstVideoAlignment"><span class="type">GstVideoAlignment</span></a> *valign</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> plane</code></em>);</pre>
<div class="refsect3">
<a name="gst-gl-get-plane-start.parameters"></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>info</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-GstVideoAlignment.html#GstVideoInfo" title="struct GstVideoInfo"><span class="type">GstVideoInfo</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>valign</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-GstVideoAlignment.html#GstVideoAlignment" title="struct GstVideoAlignment"><span class="type">GstVideoAlignment</span></a> or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>plane</p></td>
<td class="parameter_description"><p>plane number in <em class="parameter"><code>info</code></em>
to retrieve the data size of</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-get-plane-start.returns"></a><h4>Returns</h4>
<p> difference between the supposed start of the plane from the <em class="parameter"><code>info</code></em>
and where the data from the previous plane ends.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-value-get-texture-target-mask"></a><h3>gst_gl_value_get_texture_target_mask ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-OpenGL-Formats.html#GstGLTextureTarget" title="enum GstGLTextureTarget"><span class="returnvalue">GstGLTextureTarget</span></a>
gst_gl_value_get_texture_target_mask (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>See <a class="link" href="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.html#gst-gl-value-set-texture-target-from-mask" title="gst_gl_value_set_texture_target_from_mask ()"><code class="function">gst_gl_value_set_texture_target_from_mask()</code></a> for what entails a mask</p>
<div class="refsect3">
<a name="gst-gl-value-get-texture-target-mask.parameters"></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>value</p></td>
<td class="parameter_description"><p>an initialized <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type G_TYPE_STRING</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-value-get-texture-target-mask.returns"></a><h4>Returns</h4>
<p> the mask of <a class="link" href="gst-plugins-base-libs-OpenGL-Formats.html#GstGLTextureTarget" title="enum GstGLTextureTarget"><span class="type">GstGLTextureTarget</span></a>'s in <em class="parameter"><code>value</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-value-set-texture-target"></a><h3>gst_gl_value_set_texture_target ()</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_value_set_texture_target (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-OpenGL-Formats.html#GstGLTextureTarget" title="enum GstGLTextureTarget"><span class="type">GstGLTextureTarget</span></a> target</code></em>);</pre>
<div class="refsect3">
<a name="gst-gl-value-set-texture-target.parameters"></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>value</p></td>
<td class="parameter_description"><p>an initialized <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type G_TYPE_STRING</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>target</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-OpenGL-Formats.html#GstGLTextureTarget" title="enum GstGLTextureTarget"><span class="type">GstGLTextureTarget</span></a>'s</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-value-set-texture-target.returns"></a><h4>Returns</h4>
<p> whether the <em class="parameter"><code>target</code></em>
could be set on <em class="parameter"><code>value</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-value-set-texture-target-from-mask"></a><h3>gst_gl_value_set_texture_target_from_mask ()</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_value_set_texture_target_from_mask
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-OpenGL-Formats.html#GstGLTextureTarget" title="enum GstGLTextureTarget"><span class="type">GstGLTextureTarget</span></a> target_mask</code></em>);</pre>
<p>A mask is a bitwise OR of (1 << target) where target is a valid
<a class="link" href="gst-plugins-base-libs-OpenGL-Formats.html#GstGLTextureTarget" title="enum GstGLTextureTarget"><span class="type">GstGLTextureTarget</span></a></p>
<div class="refsect3">
<a name="gst-gl-value-set-texture-target-from-mask.parameters"></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>value</p></td>
<td class="parameter_description"><p>an uninitialized <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>target_mask</p></td>
<td class="parameter_description"><p>a bitwise mask of <a class="link" href="gst-plugins-base-libs-OpenGL-Formats.html#GstGLTextureTarget" title="enum GstGLTextureTarget"><span class="type">GstGLTextureTarget</span></a>'s</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-value-set-texture-target-from-mask.returns"></a><h4>Returns</h4>
<p> whether the <em class="parameter"><code>target_mask</code></em>
could be set on <em class="parameter"><code>value</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-gl-check-extension"></a><h3>gst_gl_check_extension ()</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_check_extension (<em class="parameter"><code>const <span class="type">char</span> *name</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *ext</code></em>);</pre>
<div class="refsect3">
<a name="gst-gl-check-extension.parameters"></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>name</p></td>
<td class="parameter_description"><p>the extension to search for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>ext</p></td>
<td class="parameter_description"><p>the list of possible extensions</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-gl-check-extension.returns"></a><h4>Returns</h4>
<p> whether <em class="parameter"><code>name</code></em>
is in the space seperated list of <em class="parameter"><code>ext</code></em>
</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.other_details"></a><h2>Types and Values</h2>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-OpenGL-Miscellaneous-Utilities.see-also"></a><h2>See Also</h2>
<p><a class="link" href="GstGLContext.html" title="GstGLContext"><span class="type">GstGLContext</span></a></p>
</div>
</div>
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