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<a name="GstVaapiDisplay"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="GstVaapiDisplay.top_of_page"></a>GstVaapiDisplay</span></h2>
<p>GstVaapiDisplay — VA display abstraction</p>
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<div class="refsynopsisdiv">
<a name="GstVaapiDisplay.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct <a class="link" href="GstVaapiDisplay.html#GstVaapiDisplay-struct" title="struct GstVaapiDisplay">GstVaapiDisplay</a>;
struct <a class="link" href="GstVaapiDisplay.html#GstVaapiDisplayClass" title="struct GstVaapiDisplayClass">GstVaapiDisplayClass</a>;
<a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="returnvalue">GstVaapiDisplay</span></a> * <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-new-with-display" title="gst_vaapi_display_new_with_display ()">gst_vaapi_display_new_with_display</a> (<em class="parameter"><code><span class="type">VADisplay</span> va_display</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-lock" title="gst_vaapi_display_lock ()">gst_vaapi_display_lock</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-unlock" title="gst_vaapi_display_unlock ()">gst_vaapi_display_unlock</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-sync" title="gst_vaapi_display_sync ()">gst_vaapi_display_sync</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-flush" title="gst_vaapi_display_flush ()">gst_vaapi_display_flush</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">VADisplay</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-display" title="gst_vaapi_display_get_display ()">gst_vaapi_display_get_display</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">guint</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-width" title="gst_vaapi_display_get_width ()">gst_vaapi_display_get_width</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">guint</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-height" title="gst_vaapi_display_get_height ()">gst_vaapi_display_get_height</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-size" title="gst_vaapi_display_get_size ()">gst_vaapi_display_get_size</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><span class="type">guint</span> *pwidth</code></em>,
<em class="parameter"><code><span class="type">guint</span> *pheight</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-pixel-aspect-ratio" title="gst_vaapi_display_get_pixel_aspect_ratio ()">gst_vaapi_display_get_pixel_aspect_ratio</a>
(<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><span class="type">guint</span> *par_n</code></em>,
<em class="parameter"><code><span class="type">guint</span> *par_d</code></em>);
<span class="returnvalue">GstCaps</span> * <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-decode-caps" title="gst_vaapi_display_get_decode_caps ()">gst_vaapi_display_get_decode_caps</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-has-decoder" title="gst_vaapi_display_has_decoder ()">gst_vaapi_display_has_decoder</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiProfile.html#GstVaapiProfile" title="enum GstVaapiProfile"><span class="type">GstVaapiProfile</span></a> profile</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiProfile.html#GstVaapiEntrypoint" title="enum GstVaapiEntrypoint"><span class="type">GstVaapiEntrypoint</span></a> entrypoint</code></em>);
<span class="returnvalue">GstCaps</span> * <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-encode-caps" title="gst_vaapi_display_get_encode_caps ()">gst_vaapi_display_get_encode_caps</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-has-encoder" title="gst_vaapi_display_has_encoder ()">gst_vaapi_display_has_encoder</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiProfile.html#GstVaapiProfile" title="enum GstVaapiProfile"><span class="type">GstVaapiProfile</span></a> profile</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiProfile.html#GstVaapiEntrypoint" title="enum GstVaapiEntrypoint"><span class="type">GstVaapiEntrypoint</span></a> entrypoint</code></em>);
<span class="returnvalue">GstCaps</span> * <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-image-caps" title="gst_vaapi_display_get_image_caps ()">gst_vaapi_display_get_image_caps</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-has-image-format" title="gst_vaapi_display_has_image_format ()">gst_vaapi_display_has_image_format</a> (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiImageFormat.html#GstVaapiImageFormat" title="enum GstVaapiImageFormat"><span class="type">GstVaapiImageFormat</span></a> format</code></em>);
<span class="returnvalue">GstCaps</span> * <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-get-subpicture-caps" title="gst_vaapi_display_get_subpicture_caps ()">gst_vaapi_display_get_subpicture_caps</a>
(<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-has-subpicture-format" title="gst_vaapi_display_has_subpicture_format ()">gst_vaapi_display_has_subpicture_format</a>
(<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiImageFormat.html#GstVaapiImageFormat" title="enum GstVaapiImageFormat"><span class="type">GstVaapiImageFormat</span></a> format</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="GstVaapiDisplay.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
GObject
+----GstVaapiDisplay
+----<a class="link" href="GstVaapiDisplayX11.html" title="GstVaapiDisplayX11">GstVaapiDisplayX11</a>
</pre>
</div>
<div class="refsect1">
<a name="GstVaapiDisplay.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="GstVaapiDisplay.html#GstVaapiDisplay--display" title='The "display" property'>display</a>" <span class="type">gpointer</span> : Read / Write / Construct Only
"<a class="link" href="GstVaapiDisplay.html#GstVaapiDisplay--height" title='The "height" property'>height</a>" <span class="type">guint</span> : Read
"<a class="link" href="GstVaapiDisplay.html#GstVaapiDisplay--width" title='The "width" property'>width</a>" <span class="type">guint</span> : Read
</pre>
</div>
<div class="refsect1">
<a name="GstVaapiDisplay.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="GstVaapiDisplay.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstVaapiDisplay-struct"></a><h3>struct GstVaapiDisplay</h3>
<pre class="programlisting">struct GstVaapiDisplay;</pre>
<p>
Base class for VA displays.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GstVaapiDisplayClass"></a><h3>struct GstVaapiDisplayClass</h3>
<pre class="programlisting">struct GstVaapiDisplayClass {
gboolean (*open_display) (GstVaapiDisplay *display);
void (*close_display) (GstVaapiDisplay *display);
void (*lock) (GstVaapiDisplay *display);
void (*unlock) (GstVaapiDisplay *display);
void (*sync) (GstVaapiDisplay *display);
void (*flush) (GstVaapiDisplay *display);
gboolean (*get_display) (GstVaapiDisplay *display,
GstVaapiDisplayInfo *info);
void (*get_size) (GstVaapiDisplay *display,
guint *pwidth, guint *pheight);
void (*get_size_mm) (GstVaapiDisplay *display,
guint *pwidth, guint *pheight);
};
</pre>
<p>
Base class for VA displays.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.open-display"></a>open_display</code></em> ()</span></p></td>
<td>virtual function to open a display</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.close-display"></a>close_display</code></em> ()</span></p></td>
<td>virtual function to close a display</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.lock"></a>lock</code></em> ()</span></p></td>
<td>(optional) virtual function to lock a display</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.unlock"></a>unlock</code></em> ()</span></p></td>
<td>(optional) virtual function to unlock a display</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.sync"></a>sync</code></em> ()</span></p></td>
<td>(optional) virtual function to sync a display</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.flush"></a>flush</code></em> ()</span></p></td>
<td>(optional) virtual function to flush pending requests of a display</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.get-display"></a>get_display</code></em> ()</span></p></td>
<td>virtual function to retrieve the <span class="type">GstVaapiDisplayInfo</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.get-size"></a>get_size</code></em> ()</span></p></td>
<td>virtual function to retrieve the display dimensions, in pixels</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstVaapiDisplayClass.get-size-mm"></a>get_size_mm</code></em> ()</span></p></td>
<td>virtual function to retrieve the display dimensions, in millimeters</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-new-with-display"></a><h3>gst_vaapi_display_new_with_display ()</h3>
<pre class="programlisting"><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="returnvalue">GstVaapiDisplay</span></a> * gst_vaapi_display_new_with_display (<em class="parameter"><code><span class="type">VADisplay</span> va_display</code></em>);</pre>
<p>
Creates a new <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>, using <em class="parameter"><code>va_display</code></em> as the VA
display.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>va_display</code></em> :</span></p></td>
<td>a <span class="type">VADisplay</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> object</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-lock"></a><h3>gst_vaapi_display_lock ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_vaapi_display_lock (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Locks <em class="parameter"><code>display</code></em>. If <em class="parameter"><code>display</code></em> is already locked by another thread,
the current thread will block until <em class="parameter"><code>display</code></em> is unlocked by the
other thread.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-unlock"></a><h3>gst_vaapi_display_unlock ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_vaapi_display_unlock (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Unlocks <em class="parameter"><code>display</code></em>. If another thread is blocked in a
<a class="link" href="GstVaapiDisplay.html#gst-vaapi-display-lock" title="gst_vaapi_display_lock ()"><code class="function">gst_vaapi_display_lock()</code></a> call for <em class="parameter"><code>display</code></em>, it will be woken and
can lock <em class="parameter"><code>display</code></em> itself.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-sync"></a><h3>gst_vaapi_display_sync ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_vaapi_display_sync (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Flushes any requests queued for the windowing system and waits until
all requests have been handled. This is often used for making sure
that the display is synchronized with the current state of the program.
</p>
<p>
This is most useful for X11. On windowing systems where requests are
handled synchronously, this function will do nothing.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-flush"></a><h3>gst_vaapi_display_flush ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_vaapi_display_flush (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Flushes any requests queued for the windowing system.
</p>
<p>
This is most useful for X11. On windowing systems where requests
are handled synchronously, this function will do nothing.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-display"></a><h3>gst_vaapi_display_get_display ()</h3>
<pre class="programlisting"><span class="returnvalue">VADisplay</span> gst_vaapi_display_get_display (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Returns the <span class="type">VADisplay</span> bound to <em class="parameter"><code>display</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>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the <span class="type">VADisplay</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-width"></a><h3>gst_vaapi_display_get_width ()</h3>
<pre class="programlisting"><span class="returnvalue">guint</span> gst_vaapi_display_get_width (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Retrieves the width of a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the width of the <em class="parameter"><code>display</code></em>, in pixels</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-height"></a><h3>gst_vaapi_display_get_height ()</h3>
<pre class="programlisting"><span class="returnvalue">guint</span> gst_vaapi_display_get_height (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Retrieves the height of a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the height of the <em class="parameter"><code>display</code></em>, in pixels</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-size"></a><h3>gst_vaapi_display_get_size ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_vaapi_display_get_size (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><span class="type">guint</span> *pwidth</code></em>,
<em class="parameter"><code><span class="type">guint</span> *pheight</code></em>);</pre>
<p>
Retrieves the dimensions of a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pwidth</code></em> :</span></p></td>
<td>return location for the width, or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pheight</code></em> :</span></p></td>
<td>return location for the height, or <code class="literal">NULL</code>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-pixel-aspect-ratio"></a><h3>gst_vaapi_display_get_pixel_aspect_ratio ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_vaapi_display_get_pixel_aspect_ratio
(<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><span class="type">guint</span> *par_n</code></em>,
<em class="parameter"><code><span class="type">guint</span> *par_d</code></em>);</pre>
<p>
Retrieves the pixel aspect ratio of a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>par_n</code></em> :</span></p></td>
<td>return location for the numerator of pixel aspect ratio, or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>par_d</code></em> :</span></p></td>
<td>return location for the denominator of pixel aspect ratio, or <code class="literal">NULL</code>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-decode-caps"></a><h3>gst_vaapi_display_get_decode_caps ()</h3>
<pre class="programlisting"><span class="returnvalue">GstCaps</span> * gst_vaapi_display_get_decode_caps (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Gets the supported profiles for decoding as <span class="type">GstCaps</span> capabilities.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <span class="type">GstCaps</span> object, possibly empty</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-has-decoder"></a><h3>gst_vaapi_display_has_decoder ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> gst_vaapi_display_has_decoder (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiProfile.html#GstVaapiProfile" title="enum GstVaapiProfile"><span class="type">GstVaapiProfile</span></a> profile</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiProfile.html#GstVaapiEntrypoint" title="enum GstVaapiEntrypoint"><span class="type">GstVaapiEntrypoint</span></a> entrypoint</code></em>);</pre>
<p>
Returns whether VA <em class="parameter"><code>display</code></em> supports <em class="parameter"><code>profile</code></em> for decoding at the
specified <em class="parameter"><code>entrypoint</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>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>profile</code></em> :</span></p></td>
<td>a <span class="type">VAProfile</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>entrypoint</code></em> :</span></p></td>
<td>a <span class="type">GstVaaiEntrypoint</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if VA <em class="parameter"><code>display</code></em> supports <em class="parameter"><code>profile</code></em> for decoding.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-encode-caps"></a><h3>gst_vaapi_display_get_encode_caps ()</h3>
<pre class="programlisting"><span class="returnvalue">GstCaps</span> * gst_vaapi_display_get_encode_caps (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Gets the supported profiles for decoding as <span class="type">GstCaps</span> capabilities.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <span class="type">GstCaps</span> object, possibly empty</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-has-encoder"></a><h3>gst_vaapi_display_has_encoder ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> gst_vaapi_display_has_encoder (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiProfile.html#GstVaapiProfile" title="enum GstVaapiProfile"><span class="type">GstVaapiProfile</span></a> profile</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiProfile.html#GstVaapiEntrypoint" title="enum GstVaapiEntrypoint"><span class="type">GstVaapiEntrypoint</span></a> entrypoint</code></em>);</pre>
<p>
Returns whether VA <em class="parameter"><code>display</code></em> supports <em class="parameter"><code>profile</code></em> for encoding at the
specified <em class="parameter"><code>entrypoint</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>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>profile</code></em> :</span></p></td>
<td>a <span class="type">VAProfile</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>entrypoint</code></em> :</span></p></td>
<td>a <a class="link" href="libs-GstVaapiProfile.html#GstVaapiEntrypoint" title="enum GstVaapiEntrypoint"><span class="type">GstVaapiEntrypoint</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if VA <em class="parameter"><code>display</code></em> supports <em class="parameter"><code>profile</code></em> for encoding.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-image-caps"></a><h3>gst_vaapi_display_get_image_caps ()</h3>
<pre class="programlisting"><span class="returnvalue">GstCaps</span> * gst_vaapi_display_get_image_caps (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Gets the supported image formats for <a class="link" href="libs-gstvaapisurface.html#gst-vaapi-surface-get-image" title="gst_vaapi_surface_get_image ()"><code class="function">gst_vaapi_surface_get_image()</code></a>
or <a class="link" href="libs-gstvaapisurface.html#gst-vaapi-surface-put-image" title="gst_vaapi_surface_put_image ()"><code class="function">gst_vaapi_surface_put_image()</code></a> as <span class="type">GstCaps</span> capabilities.
</p>
<p>
Note that this method does not necessarily map image formats
returned by <code class="function">vaQueryImageFormats()</code>. The set of capabilities can be
stripped down, if gstreamer-vaapi does not support the format, or
expanded to cover compatible formats not exposed by the underlying
driver. e.g. I420 can be supported even if the driver only exposes
YV12.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <span class="type">GstCaps</span> object, possibly empty</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-has-image-format"></a><h3>gst_vaapi_display_has_image_format ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> gst_vaapi_display_has_image_format (<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiImageFormat.html#GstVaapiImageFormat" title="enum GstVaapiImageFormat"><span class="type">GstVaapiImageFormat</span></a> format</code></em>);</pre>
<p>
Returns whether VA <em class="parameter"><code>display</code></em> supports <em class="parameter"><code>format</code></em> image format.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>a <span class="type">GstVaapiFormat</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if VA <em class="parameter"><code>display</code></em> supports <em class="parameter"><code>format</code></em> image format</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-get-subpicture-caps"></a><h3>gst_vaapi_display_get_subpicture_caps ()</h3>
<pre class="programlisting"><span class="returnvalue">GstCaps</span> * gst_vaapi_display_get_subpicture_caps
(<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>);</pre>
<p>
Gets the supported subpicture formats as <span class="type">GstCaps</span> capabilities.
</p>
<p>
Note that this method does not necessarily map subpicture formats
returned by <code class="function">vaQuerySubpictureFormats()</code>. The set of capabilities can
be stripped down if gstreamer-vaapi does not support the
format. e.g. this is the case for paletted formats like IA44.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <span class="type">GstCaps</span> object, possibly empty</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-vaapi-display-has-subpicture-format"></a><h3>gst_vaapi_display_has_subpicture_format ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> gst_vaapi_display_has_subpicture_format
(<em class="parameter"><code><a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="libs-GstVaapiImageFormat.html#GstVaapiImageFormat" title="enum GstVaapiImageFormat"><span class="type">GstVaapiImageFormat</span></a> format</code></em>);</pre>
<p>
Returns whether VA <em class="parameter"><code>display</code></em> supports <em class="parameter"><code>format</code></em> subpicture format.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td>
<td>a <a class="link" href="GstVaapiDisplay.html" title="GstVaapiDisplay"><span class="type">GstVaapiDisplay</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>a <span class="type">GstVaapiFormat</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if VA <em class="parameter"><code>display</code></em> supports <em class="parameter"><code>format</code></em> subpicture format</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1">
<a name="GstVaapiDisplay.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstVaapiDisplay--display"></a><h3>The <code class="literal">"display"</code> property</h3>
<pre class="programlisting"> "display" <span class="type">gpointer</span> : Read / Write / Construct Only</pre>
<p>VA display.</p>
</div>
<hr>
<div class="refsect2">
<a name="GstVaapiDisplay--height"></a><h3>The <code class="literal">"height"</code> property</h3>
<pre class="programlisting"> "height" <span class="type">guint</span> : Read</pre>
<p>The display height.</p>
<p>Allowed values: >= 1</p>
<p>Default value: 1</p>
</div>
<hr>
<div class="refsect2">
<a name="GstVaapiDisplay--width"></a><h3>The <code class="literal">"width"</code> property</h3>
<pre class="programlisting"> "width" <span class="type">guint</span> : Read</pre>
<p>The display width.</p>
<p>Allowed values: >= 1</p>
<p>Default value: 1</p>
</div>
</div>
</div>
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