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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GStreamer Base Plugins 0.10 Plugins Reference Manual: appsink</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#gst-plugins-base-plugins-appsink.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#gst-plugins-base-plugins-appsink.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces">  <span class="dim">|</span> 
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                  <a href="#gst-plugins-base-plugins-appsink.properties" class="shortcut">Properties</a></span><span id="nav_signals">  <span class="dim">|</span> 
                  <a href="#gst-plugins-base-plugins-appsink.signals" class="shortcut">Signals</a></span>
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</tr></table>
<div class="refentry">
<a name="gst-plugins-base-plugins-appsink"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-appsink.top_of_page"></a>appsink</span></h2>
<p>appsink — Allow the application to get access to raw buffer</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *</td>
<td class="property_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink--caps" title="The “caps” property">caps</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink--drop" title="The “drop” property">drop</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink--emit-signals" title="The “emit-signals” property">emit-signals</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink--eos" title="The “eos” property">eos</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink--max-buffers" title="The “max-buffers” property">max-buffers</a></td>
<td class="property_flags">Read / Write</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.signals"></a><h2>Signals</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink-eos" title="The “eos” signal">eos</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink-new-buffer" title="The “new-buffer” signal">new-buffer</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink-new-preroll" title="The “new-preroll” signal">new-preroll</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="returnvalue">GstBuffer</span></a>*</td>
<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink-pull-buffer" title="The “pull-buffer” signal">pull-buffer</a></td>
<td class="signal_flags">Action</td>
</tr>
<tr>
<td class="signal_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="returnvalue">GstBuffer</span></a>*</td>
<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink-pull-preroll" title="The “pull-preroll” signal">pull-preroll</a></td>
<td class="signal_flags">Action</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink-new-buffer-list" title="The “new-buffer-list” signal">new-buffer-list</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBufferList.html#GstBufferList"><span class="returnvalue">GstBufferList</span></a>*</td>
<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink-pull-buffer-list" title="The “pull-buffer-list” signal">pull-buffer-list</a></td>
<td class="signal_flags">Action</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstAppSink"></a><div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.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">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink-struct" title="struct GstAppSink">GstAppSink</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstObject.html">GstObject</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html">GstElement</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-0.10/GstBaseSink.html">GstBaseSink</a>
                <span class="lineart">╰──</span> GstAppSink
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GstAppSink implements
 <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstUriHandler.html#GstURIHandler">GstURIHandler</a>.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.description"></a><h2>Description</h2>
<p>Appsink is a sink plugin that supports many different methods for making
the application get a handle on the GStreamer data in a pipeline. Unlike
most GStreamer elements, Appsink provides external API functions.</p>
<p>For the documentation of the API, please see the</p>
<a href="../gst-plugins-base-libs-0.10/gst-plugins-base-libs-appsink.html">libgstapp</a> section in
<p>the GStreamer Plugins Base Libraries documentation.</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.4.9.5.1.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
            <a class="link" href="gst-plugins-base-plugins-plugin-app.html#plugin-app">app</a>
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>David Schleef &lt;ds@schleef.org&gt;, Wim Taymans &lt;wim.taymans@gmail.com&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Generic/Sink</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.9.5.1.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>ANY</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.functions_details"></a><h2>Functions</h2>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstAppSink-struct"></a><h3>struct GstAppSink</h3>
<pre class="programlisting">struct GstAppSink;</pre>
<p>
</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstAppSink--caps"></a><h3>The <code class="literal">“caps”</code> property</h3>
<pre class="programlisting">  “caps”                     <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *</pre>
<p>The allowed caps for the sink pad.</p>
<p>Flags: Read / Write</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink--drop"></a><h3>The <code class="literal">“drop”</code> property</h3>
<pre class="programlisting">  “drop”                     <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>Drop old buffers when the buffer queue is filled.</p>
<p>Flags: Read / Write</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink--emit-signals"></a><h3>The <code class="literal">“emit-signals”</code> property</h3>
<pre class="programlisting">  “emit-signals”             <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>Emit new-preroll, new-buffer and new-buffer-list signals.</p>
<p>Flags: Read / Write</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink--eos"></a><h3>The <code class="literal">“eos”</code> property</h3>
<pre class="programlisting">  “eos”                      <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>Check if the sink is EOS or not started.</p>
<p>Flags: Read</p>
<p>Default value: TRUE</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink--max-buffers"></a><h3>The <code class="literal">“max-buffers”</code> property</h3>
<pre class="programlisting">  “max-buffers”              <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>The maximum number of buffers to queue internally (0 = unlimited).</p>
<p>Flags: Read / Write</p>
<p>Default value: 0</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-appsink.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="GstAppSink-eos"></a><h3>The <code class="literal">“eos”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink"><span class="type">GstAppSink</span></a> *gstappsink,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>    user_data)</pre>
<p>
</p>
<div class="refsect3">
<a name="id-1.2.4.13.2.5"></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>gstappsink</p></td>
<td class="parameter_description"><p>the object which received the signal.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink-new-buffer"></a><h3>The <code class="literal">“new-buffer”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink"><span class="type">GstAppSink</span></a> *gstappsink,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>    user_data)</pre>
<p>
</p>
<div class="refsect3">
<a name="id-1.2.4.13.3.5"></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>gstappsink</p></td>
<td class="parameter_description"><p>the object which received the signal.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink-new-preroll"></a><h3>The <code class="literal">“new-preroll”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink"><span class="type">GstAppSink</span></a> *gstappsink,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>    user_data)</pre>
<p>
</p>
<div class="refsect3">
<a name="id-1.2.4.13.4.5"></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>gstappsink</p></td>
<td class="parameter_description"><p>the object which received the signal.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink-pull-buffer"></a><h3>The <code class="literal">“pull-buffer”</code> signal</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="returnvalue">GstBuffer</span></a>*
user_function (<a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink"><span class="type">GstAppSink</span></a> *gstappsink,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>    user_data)</pre>
<p>
</p>
<div class="refsect3">
<a name="id-1.2.4.13.5.5"></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>gstappsink</p></td>
<td class="parameter_description"><p>the object which received the signal.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.13.5.6"></a><h4>Returns</h4>
<p></p>
</div>
<p>Flags: Action</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink-pull-preroll"></a><h3>The <code class="literal">“pull-preroll”</code> signal</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBuffer.html#GstBuffer"><span class="returnvalue">GstBuffer</span></a>*
user_function (<a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink"><span class="type">GstAppSink</span></a> *gstappsink,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>    user_data)</pre>
<p>
</p>
<div class="refsect3">
<a name="id-1.2.4.13.6.5"></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>gstappsink</p></td>
<td class="parameter_description"><p>the object which received the signal.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.13.6.6"></a><h4>Returns</h4>
<p></p>
</div>
<p>Flags: Action</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink-new-buffer-list"></a><h3>The <code class="literal">“new-buffer-list”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink"><span class="type">GstAppSink</span></a> *gstappsink,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>    user_data)</pre>
<p>
</p>
<div class="refsect3">
<a name="id-1.2.4.13.7.5"></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>gstappsink</p></td>
<td class="parameter_description"><p>the object which received the signal.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAppSink-pull-buffer-list"></a><h3>The <code class="literal">“pull-buffer-list”</code> signal</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstBufferList.html#GstBufferList"><span class="returnvalue">GstBufferList</span></a>*
user_function (<a class="link" href="gst-plugins-base-plugins-appsink.html#GstAppSink"><span class="type">GstAppSink</span></a> *gstappsink,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>    user_data)</pre>
<p>
</p>
<div class="refsect3">
<a name="id-1.2.4.13.8.5"></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>gstappsink</p></td>
<td class="parameter_description"><p>the object which received the signal.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.13.8.6"></a><h4>Returns</h4>
<p></p>
</div>
<p>Flags: Action</p>
</div>
</div>
</div>
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