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<div class="refentry">
<a name="gst-plugins-good-plugins-rtprtxsend"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-rtprtxsend.top_of_page"></a>rtprtxsend</span></h2>
<p>rtprtxsend</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtprtxsend.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" 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/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtprtxsend.html#GstRtpRtxSend--max-size-time" title="The “max-size-time” property">max-size-time</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#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtprtxsend.html#GstRtpRtxSend--max-size-packets" title="The “max-size-packets” property">max-size-packets</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#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtprtxsend.html#GstRtpRtxSend--num-rtx-requests" title="The “num-rtx-requests” property">num-rtx-requests</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-good-plugins-rtprtxsend.html#GstRtpRtxSend--num-rtx-packets" title="The “num-rtx-packets” property">num-rtx-packets</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html"><span class="type">GstStructure</span></a> *</td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtprtxsend.html#GstRtpRtxSend--payload-type-map" title="The “payload-type-map” property">payload-type-map</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html"><span class="type">GstStructure</span></a> *</td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtprtxsend.html#GstRtpRtxSend--ssrc-map" title="The “ssrc-map” property">ssrc-map</a></td>
<td class="property_flags">Write</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstRtpRtxSend"></a><div class="refsect1">
<a name="gst-plugins-good-plugins-rtprtxsend.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-good-plugins-rtprtxsend.html#GstRtpRtxSend-struct" title="struct GstRtpRtxSend">GstRtpRtxSend</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtprtxsend.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/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</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html">GstElement</a>
<span class="lineart">╰──</span> GstRtpRtxSend
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtprtxsend.description"></a><h2>Description</h2>
<p>See <a class="link" href="gst-plugins-good-plugins-rtprtxreceive.html#GstRtpRtxReceive"><span class="type">GstRtpRtxReceive</span></a> for examples</p>
<p>The purpose of the sender RTX object is to keep a history of RTP packets up
to a configurable limit (max-size-time or max-size-packets). It will listen
for upstream custom retransmission events (GstRTPRetransmissionRequest) that
comes from downstream (<a class="link" href="gst-plugins-good-plugins-rtpsession.html#GstRtpSession"><span class="type">GstRtpSession</span></a>). When receiving a request it will
look up the requested seqnum in its list of stored packets. If the packet
is available, it will create a RTX packet according to RFC 4588 and send
this as an auxiliary stream. RTX is SSRC-multiplexed</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.145.7.4.1"></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-good-plugins-plugin-rtpmanager.html#plugin-rtpmanager">rtpmanager</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Julien Isorce <julien.isorce@collabora.co.uk></td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Codec</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.145.7.4.2"></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>application/x-rtp, clock-rate=(int)[ 1, 2147483647 ]</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>application/x-rtp</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtprtxsend.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtprtxsend.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstRtpRtxSend-struct"></a><h3>struct GstRtpRtxSend</h3>
<pre class="programlisting">struct GstRtpRtxSend;</pre>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtprtxsend.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstRtpRtxSend--max-size-time"></a><h3>The <code class="literal">“max-size-time”</code> property</h3>
<pre class="programlisting"> “max-size-time” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Amount of ms to queue (0 = unlimited).</p>
<p>Flags: Read / Write</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpRtxSend--max-size-packets"></a><h3>The <code class="literal">“max-size-packets”</code> property</h3>
<pre class="programlisting"> “max-size-packets” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Amount of packets to queue (0 = unlimited).</p>
<p>Flags: Read / Write</p>
<p>Allowed values: <= 32767</p>
<p>Default value: 100</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpRtxSend--num-rtx-requests"></a><h3>The <code class="literal">“num-rtx-requests”</code> property</h3>
<pre class="programlisting"> “num-rtx-requests” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Number of retransmission events received.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpRtxSend--num-rtx-packets"></a><h3>The <code class="literal">“num-rtx-packets”</code> property</h3>
<pre class="programlisting"> “num-rtx-packets” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p> Number of retransmission packets sent.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpRtxSend--payload-type-map"></a><h3>The <code class="literal">“payload-type-map”</code> property</h3>
<pre class="programlisting"> “payload-type-map” <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html"><span class="type">GstStructure</span></a> *</pre>
<p>Map of original payload types to their retransmission payload types.</p>
<p>Flags: Read / Write</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpRtxSend--ssrc-map"></a><h3>The <code class="literal">“ssrc-map”</code> property</h3>
<pre class="programlisting"> “ssrc-map” <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html"><span class="type">GstStructure</span></a> *</pre>
<p>Map of SSRCs to their retransmission SSRCs for SSRC-multiplexed mode (default = random).</p>
<p>Flags: Write</p>
</div>
</div>
</div>
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