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<a href="#gst-plugins-base-plugins-adder.synopsis" class="shortcut">Top</a>
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<a href="#gst-plugins-base-plugins-adder.description" class="shortcut">Description</a>
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<a href="#gst-plugins-base-plugins-adder.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#gst-plugins-base-plugins-adder.properties" class="shortcut">Properties</a>
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<div class="refentry">
<a name="gst-plugins-base-plugins-adder"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-adder.top_of_page"></a>adder</span></h2>
<p>adder — Add N audio channels together</p>
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<td valign="top" align="right"></td>
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<div class="refsynopsisdiv">
<a name="gst-plugins-base-plugins-adder.synopsis"></a><h2>Synopsis</h2>
<a name="GstAdder"></a><pre class="synopsis">struct <a class="link" href="gst-plugins-base-plugins-adder.html#GstAdder-struct" title="struct GstAdder">GstAdder</a>;
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-adder.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
<a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
+----<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstObject.html">GstObject</a>
+----<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html">GstElement</a>
+----GstAdder
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-adder.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="gst-plugins-base-plugins-adder.html#GstAdder--caps" title='The "caps" property'>caps</a>" <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a>* : Read / Write
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-adder.description"></a><h2>Description</h2>
<p>
The adder allows to mix several streams into one by adding the data.
Mixed data is clamped to the min/max values of the data format.
</p>
<p>
The adder currently mixes all data received on the sinkpads as soon as
possible without trying to synchronize the streams.
</p>
<p>
</p>
<div class="refsect2">
<a name="idm11744"></a><h3>Example launch line</h3>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch audiotestsrc freq<span class="gtkdoc opt">=</span><span class="number">100</span> <span class="gtkdoc opt">!</span> adder name<span class="gtkdoc opt">=</span>mix <span class="gtkdoc opt">!</span> audioconvert <span class="gtkdoc opt">!</span> alsasink audiotestsrc freq<span class="gtkdoc opt">=</span><span class="number">500</span> <span class="gtkdoc opt">!</span> mix<span class="gtkdoc opt">.</span></pre></td>
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</div>
This pipeline produces two sine waves mixed together.
</div>
<p>
</p>
<p>
Last reviewed on 2006-05-09 (0.10.7)
</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="idm14528"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
<a class="link" href="gst-plugins-base-plugins-plugin-adder.html#plugin-adder">adder</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Thomas Vander Stichele <thomas at apestaart dot org></td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Generic/Audio</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="idp7769280"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink%d</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>request</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32, depth=(int)32, signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)16, depth=(int)16, signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)8, depth=(int)8, signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int){ 32, 64 }</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</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>audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32, depth=(int)32, signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)16, depth=(int)16, signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)8, depth=(int)8, signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int){ 32, 64 }</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-adder.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstAdder-struct"></a><h3>struct GstAdder</h3>
<pre class="programlisting">struct GstAdder;</pre>
<p>
The adder object structure.
</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-adder.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstAdder--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>* : Read / Write</pre>
<p>Set target format for mixing (NULL means ANY). Setting this property takes a reference to the supplied GstCaps object.</p>
<p class="since">Since 0.10.24</p>
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