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<title>GStreamer VA-API Plugins 1.2 Library Reference Manual: Basic data structures</title>
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<a name="libs-Basic-data-structures"></a><div class="titlepage"></div>
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<div class="refnamediv"><table width="100%"><tr>
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<h2><span class="refentrytitle"><a name="libs-Basic-data-structures.top_of_page"></a>Basic data structures</span></h2>
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<p>Basic data structures</p>
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<td valign="top" align="right"></td>
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<div class="refsynopsisdiv">
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<a name="libs-Basic-data-structures.synopsis"></a><h2>Synopsis</h2>
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<pre class="synopsis">typedef <a class="link" href="libs-Basic-data-structures.html#GstVaapiID" title="GstVaapiID">GstVaapiID</a>;
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#define <a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-FORMAT:CAPS" title="GST_VAAPI_ID_FORMAT">GST_VAAPI_ID_FORMAT</a>
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#define <a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-ARGS:CAPS" title="GST_VAAPI_ID_ARGS()">GST_VAAPI_ID_ARGS</a> (id)
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struct <a class="link" href="libs-Basic-data-structures.html#GstVaapiPoint" title="struct GstVaapiPoint">GstVaapiPoint</a>;
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struct <a class="link" href="libs-Basic-data-structures.html#GstVaapiRectangle" title="struct GstVaapiRectangle">GstVaapiRectangle</a>;
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<div class="refsect1">
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<a name="libs-Basic-data-structures.functions"></a><h2>Functions</h2>
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<div class="informaltable"><table width="100%" border="0">
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<col width="150px" class="functions_return">
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<col class="functions_name">
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<td class="define_keyword">#define</td>
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<td class="function_name">
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<a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-ARGS:CAPS" title="GST_VAAPI_ID_ARGS()">GST_VAAPI_ID_ARGS</a><span class="c_punctuation">()</span>
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<div class="refsect1">
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<a name="libs-Basic-data-structures.other"></a><h2>Types and Values</h2>
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<div class="informaltable"><table width="100%" border="0">
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<col width="150px" class="name">
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<col class="description">
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<td class="typedef_keyword">typedef</td>
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<td class="function_name"><a class="link" href="libs-Basic-data-structures.html#GstVaapiID" title="GstVaapiID">GstVaapiID</a></td>
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<td class="define_keyword">#define</td>
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<td class="function_name"><a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-FORMAT:CAPS" title="GST_VAAPI_ID_FORMAT">GST_VAAPI_ID_FORMAT</a></td>
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<td class="datatype_keyword">struct</td>
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<td class="function_name"><a class="link" href="libs-Basic-data-structures.html#GstVaapiPoint" title="struct GstVaapiPoint">GstVaapiPoint</a></td>
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<td class="datatype_keyword">struct</td>
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<td class="function_name"><a class="link" href="libs-Basic-data-structures.html#GstVaapiRectangle" title="struct GstVaapiRectangle">GstVaapiRectangle</a></td>
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<div class="refsect1">
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<a name="libs-Basic-data-structures.object-hierarchy"></a><h2>Object Hierarchy</h2>
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<div class="refsect1">
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<div class="refsect1">
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<a name="libs-Basic-data-structures.details"></a><h2>Details</h2>
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<a name="libs-Basic-data-structures.functions_details"></a><h2>Functions</h2>
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<div class="refsect2">
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<a name="GST-VAAPI-ID-ARGS:CAPS"></a><h3>GST_VAAPI_ID_ARGS()</h3>
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<pre class="programlisting">#define GST_VAAPI_ID_ARGS(id) GSIZE_TO_POINTER(id)
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<p>Can be used together with <a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-FORMAT:CAPS" title="GST_VAAPI_ID_FORMAT"><span class="type">GST_VAAPI_ID_FORMAT</span></a> to properly output
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an integer value in a <code class="function">printf()</code>-style text message.</p>
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<div class="refsect3">
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<a name="id-1.2.3.7.2.5"></a><h4>Parameters</h4>
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<div class="informaltable"><table width="100%" border="0">
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<col width="150px" class="parameters_name">
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<col class="parameters_description">
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<col width="200px" class="parameters_annotations">
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<td class="parameter_name"><p>id</p></td>
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<td class="parameter_description"><p>a <a class="link" href="libs-Basic-data-structures.html#GstVaapiID" title="GstVaapiID"><span class="type">GstVaapiID</span></a></p></td>
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<td class="parameter_annotations"> </td>
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<div class="refsect1">
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<a name="libs-Basic-data-structures.other_details"></a><h2>Types and Values</h2>
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<div class="refsect2">
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<a name="GstVaapiID"></a><h3>GstVaapiID</h3>
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<pre class="programlisting">typedef gsize GstVaapiID;
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An integer large enough to hold a generic VA id or a pointer
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<p>An integer large enough to hold a generic VA id or a pointer
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wherever necessary.</p>
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<div class="refsect2">
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<a name="GST-VAAPI-ID-FORMAT:CAPS"></a><h3>GST_VAAPI_ID_FORMAT</h3>
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<pre class="programlisting">#define GST_VAAPI_ID_FORMAT "p"
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Can be used together with <a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-ARGS:CAPS" title="GST_VAAPI_ID_ARGS()"><span class="type">GST_VAAPI_ID_ARGS</span></a> to properly output an
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integer value in a <code class="function">printf()</code>-style text message.
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<p>Can be used together with <a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-ARGS:CAPS" title="GST_VAAPI_ID_ARGS()"><span class="type">GST_VAAPI_ID_ARGS</span></a> to properly output an
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integer value in a <code class="function">printf()</code>-style text message.</p>
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<div class="informalexample"><pre class="programlisting">
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printf("id: %" GST_VAAPI_ID_FORMAT "\n", GST_VAAPI_ID_ARGS(id));
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<div class="refsect2">
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<a name="GST-VAAPI-ID-ARGS:CAPS"></a><h3>GST_VAAPI_ID_ARGS()</h3>
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<pre class="programlisting">#define GST_VAAPI_ID_ARGS(id) GSIZE_TO_POINTER(id)
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Can be used together with <a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-FORMAT:CAPS" title="GST_VAAPI_ID_FORMAT"><span class="type">GST_VAAPI_ID_FORMAT</span></a> to properly output
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an integer value in a <code class="function">printf()</code>-style text message.
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<div class="variablelist"><table border="0" class="variablelist">
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<col align="left" valign="top">
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<td><p><span class="term"><em class="parameter"><code>id</code></em> :</span></p></td>
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<td>a <a class="link" href="libs-Basic-data-structures.html#GstVaapiID" title="GstVaapiID"><span class="type">GstVaapiID</span></a>
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<div class="refsect2">
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A location within a surface.
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<div class="variablelist"><table border="0" class="variablelist">
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<p>A location within a surface.</p>
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<div class="refsect3">
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<a name="id-1.2.3.8.4.5"></a><h4>Members</h4>
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<div class="informaltable"><table width="100%" border="0">
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<col align="left" valign="top">
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<col width="300px" class="struct_members_name">
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<col class="struct_members_description">
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<col width="200px" class="struct_members_annotations">
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<td><p><span class="term"><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiPoint.x"></a>x</code></em>;</span></p></td>
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<td>X coordinate</td>
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<td class="struct_member_name"><p><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiPoint.x"></a>x</code></em>;</p></td>
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<td class="struct_member_description"><p>X coordinate</p></td>
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<td class="struct_member_annotations"> </td>
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<td><p><span class="term"><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiPoint.y"></a>y</code></em>;</span></p></td>
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<td>Y coordinate</td>
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<td class="struct_member_name"><p><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiPoint.y"></a>y</code></em>;</p></td>
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<td class="struct_member_description"><p>Y coordinate</p></td>
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<td class="struct_member_annotations"> </td>
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<div class="refsect2">
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<a name="GstVaapiRectangle"></a><h3>struct GstVaapiRectangle</h3>
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A rectangle region within a surface.
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<div class="variablelist"><table border="0" class="variablelist">
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<p>A rectangle region within a surface.</p>
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<div class="refsect3">
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<a name="id-1.2.3.8.5.5"></a><h4>Members</h4>
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<div class="informaltable"><table width="100%" border="0">
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<col align="left" valign="top">
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<col width="300px" class="struct_members_name">
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<col class="struct_members_description">
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<col width="200px" class="struct_members_annotations">
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<td><p><span class="term"><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiRectangle.x"></a>x</code></em>;</span></p></td>
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<td>X coordinate</td>
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<td><p><span class="term"><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiRectangle.y"></a>y</code></em>;</span></p></td>
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<td>Y coordinate</td>
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<td><p><span class="term"><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiRectangle.width"></a>width</code></em>;</span></p></td>
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<td>region width</td>
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<td><p><span class="term"><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiRectangle.height"></a>height</code></em>;</span></p></td>
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<td>region height</td>
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<td class="struct_member_name"><p><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiRectangle.x"></a>x</code></em>;</p></td>
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<td class="struct_member_description"><p>X coordinate</p></td>
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<td class="struct_member_annotations"> </td>
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<td class="struct_member_name"><p><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiRectangle.y"></a>y</code></em>;</p></td>
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<td class="struct_member_description"><p>Y coordinate</p></td>
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<td class="struct_member_annotations"> </td>
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<td class="struct_member_name"><p><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiRectangle.width"></a>width</code></em>;</p></td>
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<td class="struct_member_description"><p>region width</p></td>
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<td class="struct_member_annotations"> </td>
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<td class="struct_member_name"><p><span class="type">guint32</span> <em class="structfield"><code><a name="GstVaapiRectangle.height"></a>height</code></em>;</p></td>
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<td class="struct_member_description"><p>region height</p></td>
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<td class="struct_member_annotations"> </td>
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