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<a href="#id2589415" class="shortcut">Description</a>
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<div class="refentry" lang="en">
<a name="gst-plugins-base-plugins-adder"></a><div class="titlepage"></div>
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<h2>
<a name="id2575901"></a><span class="refentrytitle">adder</span>
</h2>
<p>adder — Add N audio channels together</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<a name="GstAdder"></a><pre class="synopsis">
<a href="gst-plugins-base-plugins-adder.html#GstAdder-struct">GstAdder</a>;
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id2575860"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
GObject
+----GstObject
+----GstElement
+----GstAdder
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id2589415"></a><h2>Description</h2>
<p>
</p>
<div class="refsect2" lang="en">
<a name="id2575671"></a><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>
<h3>Example launch line</h3>
<p>
</p>
<pre class="programlisting">
gst-launch audiotestsrc freq=100 ! adder name=mix ! audioconvert ! alsasink audiotestsrc freq=500 ! mix.
</pre>
<p>
This pipeline produces two sine waves mixed together.
</p>
<p>
The Adder currently mixes all data received on the sinkpads as soon as possible
without trying to synchronize the streams.
</p>
</div>
<p>
</p>
<p>
Last reviewed on 2006-05-09 (0.10.7)</p>
<div class="refsect2" lang="en">
<a name="id2574496"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term">plugin</span></td>
<td>
<a href="gst-plugins-base-plugins-plugin-adder.html#plugin-adder">adder</a>
</td>
</tr>
<tr>
<td><span class="term">author</span></td>
<td>Thomas <thomas@apestaart.org></td>
</tr>
<tr>
<td><span class="term">class</span></td>
<td>Generic/Audio</td>
</tr>
</tbody>
</table></div>
<h3>Element Pads</h3>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term">name</span></td>
<td>src</td>
</tr>
<tr>
<td><span class="term">direction</span></td>
<td>source</td>
</tr>
<tr>
<td><span class="term">presence</span></td>
<td>always</td>
</tr>
<tr>
<td><span class="term">details</span></td>
<td>audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int){ 8, 16, 24, 32 }, depth=(int)[ 1, 32 ], signed=(boolean){ true, false }; audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int){ 32, 64 }</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term">name</span></td>
<td>sink%d</td>
</tr>
<tr>
<td><span class="term">direction</span></td>
<td>sink</td>
</tr>
<tr>
<td><span class="term">presence</span></td>
<td>request</td>
</tr>
<tr>
<td><span class="term">details</span></td>
<td>audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int){ 8, 16, 24, 32 }, depth=(int)[ 1, 32 ], signed=(boolean){ true, false }; audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int){ 32, 64 }</td>
</tr>
</tbody>
</table></div>
</div>
<p>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2557087"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id2557098"></a><h3>
<a name="GstAdder-struct"></a>GstAdder</h3>
<a class="indexterm" name="id2557110"></a><pre class="programlisting">typedef struct _GstAdder GstAdder;</pre>
<p>
The adder object structure.</p>
<p>
</p>
</div>
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