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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
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<title>dtmfdetect: GStreamer Bad Plugins 1.0 Plugins Reference Manual</title>
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                  <a href="#gst-plugins-bad-plugins-dtmfdetect.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#gst-plugins-bad-plugins-dtmfdetect.object-hierarchy" class="shortcut">Object Hierarchy</a></span>
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<div class="refentry">
<a name="gst-plugins-bad-plugins-dtmfdetect"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-dtmfdetect.top_of_page"></a>dtmfdetect</span></h2>
<p>dtmfdetect — Detects DTMF tones</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<a name="GstDtmfDetect"></a><div class="refsect1">
<a name="gst-plugins-bad-plugins-dtmfdetect.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" 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-bad-plugins-dtmfdetect.html#GstDtmfDetect-struct" title="struct GstDtmfDetect">GstDtmfDetect</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-dtmfdetect.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-struct">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
                <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseTransform.html#GstBaseTransform-struct">GstBaseTransform</a>
                    <span class="lineart">╰──</span> GstDtmfDetect
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-dtmfdetect.description"></a><h2>Description</h2>
<p>This element will detect DTMF tones and emit messages.</p>
<p>The message is called <code class="classname">"dtmf-event"</code> and has
the following fields:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>
  gint <code class="classname">type</code> (0-1):
  The application uses this field to specify which of the two methods
  specified in RFC 2833 to use. The value should be 0 for tones and 1 for
  named events. Tones are specified by their frequencies and events are
  specfied by their number. This element can only take events as input.
  Do not confuse with "method" which specified the output.
  </p></li>
<li class="listitem"><p>
  gint <code class="classname">number</code> (0-16):
  The event number.
  </p></li>
<li class="listitem"><p>
  gint <code class="classname">method</code> (2):
  This field will always been 2 (ie sound) from this element.
  </p></li>
</ul></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.28.6.5.1"></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>
            spandsp
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Olivier Crete &lt;olivier.crete@collabora.com&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Filter/Analyzer/Audio</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.28.6.5.2"></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>audio/x-raw, format=(string)S16LE, rate=(int)8000, channels=(int)1</td>
</tr>
</tbody>
</table></div>
<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>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, format=(string)S16LE, rate=(int)8000, channels=(int)1</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-dtmfdetect.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-dtmfdetect.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstDtmfDetect-struct"></a><h3>struct GstDtmfDetect</h3>
<pre class="programlisting">struct GstDtmfDetect;</pre>
</div>
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