Google Git
Sign in
coral / mtk-gstreamer-debian / fa1e60a5264d9f8ef0bba1022545b00159b6e884 / . / docs / gst / html / GstCapsFeatures.html
blob: 97ba99e2a57ce3fd5e24aa1caeb282a23e7c224a [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GstCapsFeatures: GStreamer 1.0 Core Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="GStreamer 1.0 Core Reference Manual">
<link rel="up" href="libgstreamer.html" title="GStreamer Core Library">
<link rel="prev" href="GstCaps.html" title="GstCaps">
<link rel="next" href="GstSample.html" title="GstSample">
<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="#GstCapsFeatures.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
<a href="#GstCapsFeatures.object-hierarchy" class="shortcut">Object Hierarchy</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="libgstreamer.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="GstCaps.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="GstSample.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="GstCapsFeatures"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GstCapsFeatures.top_of_page"></a>GstCapsFeatures</span></h2>
<p>GstCapsFeatures — A set of features in caps</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GstCapsFeatures.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCapsFeatures.html#GST-CAPS-FEATURES-ANY:CAPS" title="GST_CAPS_FEATURES_ANY">GST_CAPS_FEATURES_ANY</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCapsFeatures.html#GST-CAPS-FEATURES-MEMORY-SYSTEM-MEMORY:CAPS" title="GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY">GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY</a></td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-new" title="gst_caps_features_new ()">gst_caps_features_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-new-empty" title="gst_caps_features_new_empty ()">gst_caps_features_new_empty</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-new-any" title="gst_caps_features_new_any ()">gst_caps_features_new_any</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-new-id" title="gst_caps_features_new_id ()">gst_caps_features_new_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-new-id-valist" title="gst_caps_features_new_id_valist ()">gst_caps_features_new_id_valist</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-new-valist" title="gst_caps_features_new_valist ()">gst_caps_features_new_valist</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-copy" title="gst_caps_features_copy ()">gst_caps_features_copy</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="GstCapsFeatures.html#gst-caps-features-free" title="gst_caps_features_free ()">gst_caps_features_free</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-from-string" title="gst_caps_features_from_string ()">gst_caps_features_from_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-to-string" title="gst_caps_features_to_string ()">gst_caps_features_to_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-set-parent-refcount" title="gst_caps_features_set_parent_refcount ()">gst_caps_features_set_parent_refcount</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-is-equal" title="gst_caps_features_is_equal ()">gst_caps_features_is_equal</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-is-any" title="gst_caps_features_is_any ()">gst_caps_features_is_any</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-contains" title="gst_caps_features_contains ()">gst_caps_features_contains</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-contains-id" title="gst_caps_features_contains_id ()">gst_caps_features_contains_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-get-size" title="gst_caps_features_get_size ()">gst_caps_features_get_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-get-nth" title="gst_caps_features_get_nth ()">gst_caps_features_get_nth</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="returnvalue">GQuark</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCapsFeatures.html#gst-caps-features-get-nth-id" title="gst_caps_features_get_nth_id ()">gst_caps_features_get_nth_id</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="GstCapsFeatures.html#gst-caps-features-add" title="gst_caps_features_add ()">gst_caps_features_add</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="GstCapsFeatures.html#gst-caps-features-add-id" title="gst_caps_features_add_id ()">gst_caps_features_add_id</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="GstCapsFeatures.html#gst-caps-features-remove" title="gst_caps_features_remove ()">gst_caps_features_remove</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="GstCapsFeatures.html#gst-caps-features-remove-id" title="gst_caps_features_remove_id ()">gst_caps_features_remove_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstCapsFeatures.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GstCapsFeatures.html#GstCapsFeatures-struct" title="GstCapsFeatures">GstCapsFeatures</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCapsFeatures.html#GST-CAPS-FEATURE-MEMORY-SYSTEM-MEMORY:CAPS" title="GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY">GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstCapsFeatures.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-Boxed-Types.html">GBoxed</a>
<span class="lineart">╰──</span> GstCapsFeatures
</pre>
</div>
<div class="refsect1">
<a name="GstCapsFeatures.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/gst.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GstCapsFeatures.description"></a><h2>Description</h2>
<p><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> can optionally be set on a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to add requirements
for additional features for a specific <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a>. Caps structures with
the same name but with a non-equal set of caps features are not compatible.
If a pad supports multiple sets of features it has to add multiple equal
structures with different feature sets to the caps.</p>
<p>Empty <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> are equivalent with the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> that only
contain <a class="link" href="GstCapsFeatures.html#GST-CAPS-FEATURE-MEMORY-SYSTEM-MEMORY:CAPS" title="GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY"><span class="type">GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY</span></a>. ANY <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> as
created by <a class="link" href="GstCapsFeatures.html#gst-caps-features-new-any" title="gst_caps_features_new_any ()"><code class="function">gst_caps_features_new_any()</code></a> are equal to any other <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>
and can be used to specify that any <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> would be supported, e.g.
for elements that don't touch buffer memory. <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> with ANY <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>
are considered non-fixed and during negotiation some <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> have
to be selected.</p>
<p>Examples for caps features would be the requirement of a specific <a class="link" href="GstMemory.html" title="GstMemory"><span class="type">GstMemory</span></a>
types or the requirement of having a specific <a class="link" href="gstreamer-GstMeta.html#GstMeta" title="struct GstMeta"><span class="type">GstMeta</span></a> on the buffer. Features
are given as a string of the format "memory:GstMemoryTypeName" or
"meta:GstMetaAPIName".</p>
</div>
<div class="refsect1">
<a name="GstCapsFeatures.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GST-CAPS-FEATURES-ANY:CAPS"></a><h3>GST_CAPS_FEATURES_ANY</h3>
<pre class="programlisting">#define GST_CAPS_FEATURES_ANY (_gst_caps_features_any)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FEATURES-MEMORY-SYSTEM-MEMORY:CAPS"></a><h3>GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY</h3>
<pre class="programlisting">#define GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY (_gst_caps_features_memory_system_memory)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-new"></a><h3>gst_caps_features_new ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_features_new (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *feature1</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> with the given features.
The last argument must be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>Free-function: gst_caps_features_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.4.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>feature1</p></td>
<td class="parameter_description"><p>name of first feature to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>additional features</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.4.7"></a><h4>Returns</h4>
<p> a new, empty <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</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: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-new-empty"></a><h3>gst_caps_features_new_empty ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_features_new_empty (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Creates a new, empty <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p>
<p>Free-function: gst_caps_features_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.5.6"></a><h4>Returns</h4>
<p> a new, empty <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</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: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-new-any"></a><h3>gst_caps_features_new_any ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_features_new_any (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Creates a new, ANY <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>. This will be equal
to any other <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> but caps with these are
unfixed.</p>
<p>Free-function: gst_caps_features_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.6.6"></a><h4>Returns</h4>
<p> a new, ANY <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</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: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-new-id"></a><h3>gst_caps_features_new_id ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_features_new_id (<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> feature1</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> with the given features.
The last argument must be 0.</p>
<p>Free-function: gst_caps_features_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.7.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>feature1</p></td>
<td class="parameter_description"><p>name of first feature to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>additional features</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.7.7"></a><h4>Returns</h4>
<p> a new, empty <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</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: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-new-id-valist"></a><h3>gst_caps_features_new_id_valist ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_features_new_id_valist (<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> feature1</code></em>,
<em class="parameter"><code><span class="type">va_list</span> varargs</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> with the given features.</p>
<p>Free-function: gst_caps_features_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.8.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>feature1</p></td>
<td class="parameter_description"><p>name of first feature to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>varargs</p></td>
<td class="parameter_description"><p>variable argument list</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.8.7"></a><h4>Returns</h4>
<p> a new, empty <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</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: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-new-valist"></a><h3>gst_caps_features_new_valist ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_features_new_valist (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *feature1</code></em>,
<em class="parameter"><code><span class="type">va_list</span> varargs</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> with the given features.</p>
<p>Free-function: gst_caps_features_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.9.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>feature1</p></td>
<td class="parameter_description"><p>name of first feature to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>varargs</p></td>
<td class="parameter_description"><p>variable argument list</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.9.7"></a><h4>Returns</h4>
<p> a new, empty <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</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: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-copy"></a><h3>gst_caps_features_copy ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_features_copy (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Duplicates a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> and all its values.</p>
<p>Free-function: gst_caps_features_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.10.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to duplicate</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.10.7"></a><h4>Returns</h4>
<p> a new <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</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: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-free"></a><h3>gst_caps_features_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_features_free (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Frees a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> and all its values. The caps features must not
have a parent when this function is called.</p>
<div class="refsect3">
<a name="id-1.3.12.8.11.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p> the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to free. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input. Default is transfer none."><span class="acronym">in</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>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-from-string"></a><h3>gst_caps_features_from_string ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_features_from_string (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *features</code></em>);</pre>
<p>Creates a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> from a string representation.</p>
<p>Free-function: gst_caps_features_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.12.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a string representation of a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.12.7"></a><h4>Returns</h4>
<p> a new <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> or
<a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> when the string could not be parsed. Free with
<a class="link" href="GstCapsFeatures.html#gst-caps-features-free" title="gst_caps_features_free ()"><code class="function">gst_caps_features_free()</code></a> after use. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</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></p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-to-string"></a><h3>gst_caps_features_to_string ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_caps_features_to_string (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Converts <em class="parameter"><code>features</code></em>
to a human-readable string representation.</p>
<p>For debugging purposes its easier to do something like this:</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting"><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-LOG:CAPS">GST_LOG</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;features is %&quot;</span> GST_PTR_FORMAT<span class="gtkdoc opt">,</span> features<span class="gtkdoc opt">);</span></pre></td>
</tr>
</tbody>
</table>
</div>
<p>
This prints the features in human readable form.</p>
<p>Free-function: g_free</p>
<div class="refsect3">
<a name="id-1.3.12.8.13.9"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.13.10"></a><h4>Returns</h4>
<p> a pointer to string allocated by <a href="https://developer.gnome.org/glib/unstable/glib-Memory-Allocation.html#g-malloc"><code class="function">g_malloc()</code></a>.
<a href="https://developer.gnome.org/glib/unstable/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> after usage. </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: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-set-parent-refcount"></a><h3>gst_caps_features_set_parent_refcount ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_features_set_parent_refcount (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> *refcount</code></em>);</pre>
<p>Sets the parent_refcount field of <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>. This field is used to
determine whether a caps features is mutable or not. This function should only be
called by code implementing parent objects of <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>, as described in
the MT Refcounting section of the design documents.</p>
<div class="refsect3">
<a name="id-1.3.12.8.14.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>refcount</p></td>
<td class="parameter_description"><p> a pointer to the parent's refcount. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input. Default is transfer none."><span class="acronym">in</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.14.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the parent refcount could be set.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-is-equal"></a><h3>gst_caps_features_is_equal ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_features_is_equal (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features1</code></em>,
<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features2</code></em>);</pre>
<p>Check if <em class="parameter"><code>features1</code></em>
and <em class="parameter"><code>features2</code></em>
are equal.</p>
<div class="refsect3">
<a name="id-1.3.12.8.15.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features1</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>features2</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.15.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>features1</code></em>
and <em class="parameter"><code>features2</code></em>
are equal.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-is-any"></a><h3>gst_caps_features_is_any ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_features_is_any (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Check if <em class="parameter"><code>features</code></em>
is <a class="link" href="GstCapsFeatures.html#GST-CAPS-FEATURES-ANY:CAPS" title="GST_CAPS_FEATURES_ANY"><code class="literal">GST_CAPS_FEATURES_ANY</code></a>.</p>
<div class="refsect3">
<a name="id-1.3.12.8.16.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.16.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>features</code></em>
is <a class="link" href="GstCapsFeatures.html#GST-CAPS-FEATURES-ANY:CAPS" title="GST_CAPS_FEATURES_ANY"><code class="literal">GST_CAPS_FEATURES_ANY</code></a>.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-contains"></a><h3>gst_caps_features_contains ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_features_contains (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *feature</code></em>);</pre>
<p>Check if <em class="parameter"><code>features</code></em>
contains <em class="parameter"><code>feature</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.17.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>feature</p></td>
<td class="parameter_description"><p>a feature</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.17.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>features</code></em>
contains <em class="parameter"><code>feature</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-contains-id"></a><h3>gst_caps_features_contains_id ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_features_contains_id (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> feature</code></em>);</pre>
<p>Check if <em class="parameter"><code>features</code></em>
contains <em class="parameter"><code>feature</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.18.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>feature</p></td>
<td class="parameter_description"><p>a feature</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.18.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>features</code></em>
contains <em class="parameter"><code>feature</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-get-size"></a><h3>gst_caps_features_get_size ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
gst_caps_features_get_size (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Returns the number of features in <em class="parameter"><code>features</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.19.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.19.6"></a><h4>Returns</h4>
<p> The number of features in <em class="parameter"><code>features</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-get-nth"></a><h3>gst_caps_features_get_nth ()</h3>
<pre class="programlisting">const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_caps_features_get_nth (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> i</code></em>);</pre>
<p>Returns the <em class="parameter"><code>i</code></em>
-th feature of <em class="parameter"><code>features</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.20.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>i</p></td>
<td class="parameter_description"><p>index of the feature</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.20.6"></a><h4>Returns</h4>
<p> The <em class="parameter"><code>i</code></em>
-th feature of <em class="parameter"><code>features</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-get-nth-id"></a><h3>gst_caps_features_get_nth_id ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="returnvalue">GQuark</span></a>
gst_caps_features_get_nth_id (<em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> i</code></em>);</pre>
<p>Returns the <em class="parameter"><code>i</code></em>
-th feature of <em class="parameter"><code>features</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.21.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>i</p></td>
<td class="parameter_description"><p>index of the feature</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.12.8.21.6"></a><h4>Returns</h4>
<p> The <em class="parameter"><code>i</code></em>
-th feature of <em class="parameter"><code>features</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-add"></a><h3>gst_caps_features_add ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_features_add (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *feature</code></em>);</pre>
<p>Adds <em class="parameter"><code>feature</code></em>
to <em class="parameter"><code>features</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.22.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>feature</p></td>
<td class="parameter_description"><p>a feature.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-add-id"></a><h3>gst_caps_features_add_id ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_features_add_id (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> feature</code></em>);</pre>
<p>Adds <em class="parameter"><code>feature</code></em>
to <em class="parameter"><code>features</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.23.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>feature</p></td>
<td class="parameter_description"><p>a feature.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-remove"></a><h3>gst_caps_features_remove ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_features_remove (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *feature</code></em>);</pre>
<p>Removes <em class="parameter"><code>feature</code></em>
from <em class="parameter"><code>features</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.24.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>feature</p></td>
<td class="parameter_description"><p>a feature.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-features-remove-id"></a><h3>gst_caps_features_remove_id ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_features_remove_id (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> feature</code></em>);</pre>
<p>Removes <em class="parameter"><code>feature</code></em>
from <em class="parameter"><code>features</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.12.8.25.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>feature</p></td>
<td class="parameter_description"><p>a feature.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
</div>
</div>
<div class="refsect1">
<a name="GstCapsFeatures.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstCapsFeatures-struct"></a><h3>GstCapsFeatures</h3>
<pre class="programlisting">typedef struct _GstCapsFeatures GstCapsFeatures;</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FEATURE-MEMORY-SYSTEM-MEMORY:CAPS"></a><h3>GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY</h3>
<pre class="programlisting">#define GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY "memory:SystemMemory"
</pre>
</div>
</div>
<div class="refsect1">
<a name="GstCapsFeatures.see-also"></a><h2>See Also</h2>
<p><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.24</div>
</body>
</html>