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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>GStreamer VA-API Plugins 1.4 Library Reference Manual: GstVaapiPixmap</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#libs-GstVaapiPixmap.description" class="shortcut">Description</a></span>
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<div class="refentry">
<a name="libs-GstVaapiPixmap"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libs-GstVaapiPixmap.top_of_page"></a>GstVaapiPixmap</span></h2>
<p>GstVaapiPixmap — Pixmap abstraction</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libs-GstVaapiPixmap.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="function_type">
<a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="returnvalue">GstVaapiPixmap</span></a> *
</td>
<td class="function_name">
<a class="link" href="libs-GstVaapiPixmap.html#gst-vaapi-pixmap-ref" title="gst_vaapi_pixmap_ref ()">gst_vaapi_pixmap_ref</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="libs-GstVaapiPixmap.html#gst-vaapi-pixmap-unref" title="gst_vaapi_pixmap_unref ()">gst_vaapi_pixmap_unref</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="libs-GstVaapiPixmap.html#gst-vaapi-pixmap-replace" title="gst_vaapi_pixmap_replace ()">gst_vaapi_pixmap_replace</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">GstVideoFormat</span>
</td>
<td class="function_name">
<a class="link" href="libs-GstVaapiPixmap.html#gst-vaapi-pixmap-get-format" title="gst_vaapi_pixmap_get_format ()">gst_vaapi_pixmap_get_format</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">guint</span>
</td>
<td class="function_name">
<a class="link" href="libs-GstVaapiPixmap.html#gst-vaapi-pixmap-get-width" title="gst_vaapi_pixmap_get_width ()">gst_vaapi_pixmap_get_width</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">guint</span>
</td>
<td class="function_name">
<a class="link" href="libs-GstVaapiPixmap.html#gst-vaapi-pixmap-get-height" title="gst_vaapi_pixmap_get_height ()">gst_vaapi_pixmap_get_height</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="libs-GstVaapiPixmap.html#gst-vaapi-pixmap-get-size" title="gst_vaapi_pixmap_get_size ()">gst_vaapi_pixmap_get_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="libs-GstVaapiPixmap.html#gst-vaapi-pixmap-put-surface" title="gst_vaapi_pixmap_put_surface ()">gst_vaapi_pixmap_put_surface</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libs-GstVaapiPixmap.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="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap">GstVaapiPixmap</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libs-GstVaapiPixmap.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="libs-GstVaapiPixmap.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-vaapi-pixmap-ref"></a><h3>gst_vaapi_pixmap_ref ()</h3>
<pre class="programlisting"><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="returnvalue">GstVaapiPixmap</span></a> *
gst_vaapi_pixmap_ref (<em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> *pixmap</code></em>);</pre>
<p>Atomically increases the reference count of the given <em class="parameter"><code>pixmap</code></em>
 by one.</p>
<div class="refsect3">
<a name="id-1.2.10.6.2.5"></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>pixmap</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.10.6.2.6"></a><h4>Returns</h4>
<p> The same <em class="parameter"><code>pixmap</code></em>
argument</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-pixmap-unref"></a><h3>gst_vaapi_pixmap_unref ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_vaapi_pixmap_unref (<em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> *pixmap</code></em>);</pre>
<p>Atomically decreases the reference count of the <em class="parameter"><code>pixmap</code></em>
 by one. If
the reference count reaches zero, the pixmap will be free'd.</p>
<div class="refsect3">
<a name="id-1.2.10.6.3.5"></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>pixmap</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-pixmap-replace"></a><h3>gst_vaapi_pixmap_replace ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_vaapi_pixmap_replace (<em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> **old_pixmap_ptr</code></em>,
                          <em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> *new_pixmap</code></em>);</pre>
<p>Atomically replaces the pixmap pixmap held in <em class="parameter"><code>old_pixmap_ptr</code></em>
 with
<em class="parameter"><code>new_pixmap</code></em>
. This means that <em class="parameter"><code>old_pixmap_ptr</code></em>
 shall reference a
valid pixmap. However, <em class="parameter"><code>new_pixmap</code></em>
 can be NULL.</p>
<div class="refsect3">
<a name="id-1.2.10.6.4.5"></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>old_pixmap_ptr</p></td>
<td class="parameter_description"><p>a pointer to a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>new_pixmap</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-pixmap-get-format"></a><h3>gst_vaapi_pixmap_get_format ()</h3>
<pre class="programlisting"><span class="returnvalue">GstVideoFormat</span>
gst_vaapi_pixmap_get_format (<em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> *pixmap</code></em>);</pre>
<p>Retrieves the format of a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.10.6.5.5"></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>pixmap</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.10.6.5.6"></a><h4>Returns</h4>
<p> the format of the <em class="parameter"><code>pixmap</code></em>
</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-pixmap-get-width"></a><h3>gst_vaapi_pixmap_get_width ()</h3>
<pre class="programlisting"><span class="returnvalue">guint</span>
gst_vaapi_pixmap_get_width (<em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> *pixmap</code></em>);</pre>
<p>Retrieves the width of a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.10.6.6.5"></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>pixmap</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.10.6.6.6"></a><h4>Returns</h4>
<p> the width of the <em class="parameter"><code>pixmap</code></em>
, in pixels</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-pixmap-get-height"></a><h3>gst_vaapi_pixmap_get_height ()</h3>
<pre class="programlisting"><span class="returnvalue">guint</span>
gst_vaapi_pixmap_get_height (<em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> *pixmap</code></em>);</pre>
<p>Retrieves the height of a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p>
<div class="refsect3">
<a name="id-1.2.10.6.7.5"></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>pixmap</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.10.6.7.6"></a><h4>Returns</h4>
<p> the height of the <em class="parameter"><code>pixmap</code></em>
, in pixels</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-pixmap-get-size"></a><h3>gst_vaapi_pixmap_get_size ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_vaapi_pixmap_get_size (<em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> *pixmap</code></em>,
                           <em class="parameter"><code><span class="type">guint</span> *width</code></em>,
                           <em class="parameter"><code><span class="type">guint</span> *height</code></em>);</pre>
<p>Retrieves the dimensions of a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.10.6.8.5"></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>pixmap</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>return location for the width, or <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>return location for the height, or <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-pixmap-put-surface"></a><h3>gst_vaapi_pixmap_put_surface ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gst_vaapi_pixmap_put_surface (<em class="parameter"><code><a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a> *pixmap</code></em>,
                              <em class="parameter"><code><a class="link" href="libs-gstvaapisurface.html#GstVaapiSurface" title="GstVaapiSurface"><span class="type">GstVaapiSurface</span></a> *surface</code></em>,
                              <em class="parameter"><code>const <a class="link" href="libs-Basic-data-structures.html#GstVaapiRectangle" title="struct GstVaapiRectangle"><span class="type">GstVaapiRectangle</span></a> *crop_rect</code></em>,
                              <em class="parameter"><code><span class="type">guint</span> flags</code></em>);</pre>
<p>Renders the whole <em class="parameter"><code>surface</code></em>
, or a cropped region defined with
<em class="parameter"><code>crop_rect</code></em>
, into the <em class="parameter"><code>pixmap</code></em>
, while scaling to fit the target
pixmap. The <em class="parameter"><code>flags</code></em>
 specify how de-interlacing (if needed), color
space conversion, scaling and other postprocessing transformations
are performed.</p>
<div class="refsect3">
<a name="id-1.2.10.6.9.5"></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>pixmap</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-GstVaapiPixmap.html#GstVaapiPixmap" title="GstVaapiPixmap"><span class="type">GstVaapiPixmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>surface</p></td>
<td class="parameter_description"><p>a <a class="link" href="libs-gstvaapisurface.html#GstVaapiSurface" title="GstVaapiSurface"><span class="type">GstVaapiSurface</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>crop_rect</p></td>
<td class="parameter_description"><p>the video cropping rectangle, or <code class="literal">NULL</code> if the entire
surface is to be used.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p>postprocessing flags. See <a class="link" href="libs-gstvaapisurface.html#GstVaapiSurfaceRenderFlags" title="enum GstVaapiSurfaceRenderFlags"><span class="type">GstVaapiSurfaceRenderFlags</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.10.6.9.6"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success</p>
<p></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="libs-GstVaapiPixmap.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstVaapiPixmap"></a><h3>GstVaapiPixmap</h3>
<pre class="programlisting">typedef struct {
} GstVaapiPixmap;
</pre>
<p>Base class for system-dependent pixmaps.</p>
</div>
</div>
</div>
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