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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Basic data structures</title>
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<a href="#libs-Basic-data-structures.synopsis" class="shortcut">Top</a>
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                  <a href="#libs-Basic-data-structures.description" class="shortcut">Description</a>
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<div class="refentry">
<a name="libs-Basic-data-structures"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libs-Basic-data-structures.top_of_page"></a>Basic data structures</span></h2>
<p>Basic data structures</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="libs-Basic-data-structures.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">typedef             <a class="link" href="libs-Basic-data-structures.html#GstVaapiID" title="GstVaapiID">GstVaapiID</a>;
#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>
#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)
#define             <a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID:CAPS" title="GST_VAAPI_ID()">GST_VAAPI_ID</a>                        (id)
#define             <a class="link" href="libs-Basic-data-structures.html#GST-VAAPI-ID-NONE:CAPS" title="GST_VAAPI_ID_NONE">GST_VAAPI_ID_NONE</a>
struct              <a class="link" href="libs-Basic-data-structures.html#GstVaapiPoint" title="struct GstVaapiPoint">GstVaapiPoint</a>;
struct              <a class="link" href="libs-Basic-data-structures.html#GstVaapiRectangle" title="struct GstVaapiRectangle">GstVaapiRectangle</a>;
</pre>
</div>
<div class="refsect1">
<a name="libs-Basic-data-structures.description"></a><h2>Description</h2>
<p>
</p>
</div>
<div class="refsect1">
<a name="libs-Basic-data-structures.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstVaapiID"></a><h3>GstVaapiID</h3>
<pre class="programlisting">typedef guint32 GstVaapiID;
</pre>
<p>
An integer large enough to hold a generic VA id or a pointer
wherever necessary.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-VAAPI-ID-FORMAT:CAPS"></a><h3>GST_VAAPI_ID_FORMAT</h3>
<pre class="programlisting">#define GST_VAAPI_ID_FORMAT "p"
</pre>
<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
integer value in a <code class="function">printf()</code>-style text message.
</p>
<div class="informalexample"><pre class="programlisting">
printf("id: %" GST_VAAPI_ID_FORMAT "\n", GST_VAAPI_ID_ARGS(id));
</pre></div>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-VAAPI-ID-ARGS:CAPS"></a><h3>GST_VAAPI_ID_ARGS()</h3>
<pre class="programlisting">#define GST_VAAPI_ID_ARGS(id) GUINT_TO_POINTER(id)
</pre>
<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
an integer value in a <code class="function">printf()</code>-style text message.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>id</code></em> :</span></p></td>
<td>a <a class="link" href="libs-Basic-data-structures.html#GstVaapiID" title="GstVaapiID"><span class="type">GstVaapiID</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GST-VAAPI-ID:CAPS"></a><h3>GST_VAAPI_ID()</h3>
<pre class="programlisting">#define GST_VAAPI_ID(id) ((GstVaapiID)(id))
</pre>
<p>
Macro that creates a <a class="link" href="libs-Basic-data-structures.html#GstVaapiID" title="GstVaapiID"><span class="type">GstVaapiID</span></a> from <em class="parameter"><code>id</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>id</code></em> :</span></p></td>
<td>an arbitrary integer value</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GST-VAAPI-ID-NONE:CAPS"></a><h3>GST_VAAPI_ID_NONE</h3>
<pre class="programlisting">#define GST_VAAPI_ID_NONE GST_VAAPI_ID(0)
</pre>
<p>
Macro that evaluates to the default <a class="link" href="libs-Basic-data-structures.html#GstVaapiID" title="GstVaapiID"><span class="type">GstVaapiID</span></a> value.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GstVaapiPoint"></a><h3>struct GstVaapiPoint</h3>
<pre class="programlisting">struct GstVaapiPoint {
    guint32 x;
    guint32 y;
};
</pre>
<p>
A location within a surface.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<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>
<td>X coordinate</td>
</tr>
<tr>
<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>
<td>Y coordinate</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstVaapiRectangle"></a><h3>struct GstVaapiRectangle</h3>
<pre class="programlisting">struct GstVaapiRectangle {
    guint32 x;
    guint32 y;
    guint32 width;
    guint32 height;
};
</pre>
<p>
A rectangle region within a surface.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<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>
<td>X coordinate</td>
</tr>
<tr>
<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>
<td>Y coordinate</td>
</tr>
<tr>
<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>
<td>region width</td>
</tr>
<tr>
<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>
<td>region height</td>
</tr>
</tbody>
</table></div>
</div>
</div>
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