1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>rtprtxsend: GStreamer Good Plugins 1.0 Plugins Reference Manual</title> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="GStreamer Good Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-good Elements"> 9<link rel="prev" href="gst-plugins-good-plugins-rtprtxreceive.html" title="rtprtxreceive"> 10<link rel="next" href="gst-plugins-good-plugins-rtpsbcdepay.html" title="rtpsbcdepay"> 11<meta name="generator" content="GTK-Doc V1.28 (XML mode)"> 12<link rel="stylesheet" href="style.css" type="text/css"> 13</head> 14<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 15<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> 16<td 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href="gst-plugins-good-plugins-rtpsbcdepay.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 26</tr></table> 27<div class="refentry"> 28<a name="gst-plugins-good-plugins-rtprtxsend"></a><div class="titlepage"></div> 29<div class="refnamediv"><table width="100%"><tr> 30<td valign="top"> 31<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-rtprtxsend.top_of_page"></a>rtprtxsend</span></h2> 32<p>rtprtxsend</p> 33</td> 34<td class="gallery_image" valign="top" align="right"></td> 35</tr></table></div> 36<div class="refsect1"> 37<a name="gst-plugins-good-plugins-rtprtxsend.properties"></a><h2>Properties</h2> 38<div class="informaltable"><table class="informaltable" border="0"> 39<colgroup> 40<col width="150px" class="properties_type"> 41<col width="300px" class="properties_name"> 42<col width="200px" class="properties_flags"> 43</colgroup> 44<tbody> 45<tr> 46<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> 47<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> 48<td class="property_flags">Read / Write</td> 49</tr> 50<tr> 51<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> 52<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> 53<td class="property_flags">Read / Write</td> 54</tr> 55<tr> 56<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> 57<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> 58<td class="property_flags">Read</td> 59</tr> 60<tr> 61<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> 62<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> 63<td class="property_flags">Read</td> 64</tr> 65<tr> 66<td class="property_type"> 67<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html#GstStructure-struct"><span class="type">GstStructure</span></a> *</td> 68<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> 69<td class="property_flags">Read / Write</td> 70</tr> 71<tr> 72<td class="property_type"> 73<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html#GstStructure-struct"><span class="type">GstStructure</span></a> *</td> 74<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> 75<td class="property_flags">Write</td> 76</tr> 77</tbody> 78</table></div> 79</div> 80<a name="GstRtpRtxSend"></a><div class="refsect1"> 81<a name="gst-plugins-good-plugins-rtprtxsend.other"></a><h2>Types and Values</h2> 82<div class="informaltable"><table class="informaltable" width="100%" border="0"> 83<colgroup> 84<col width="150px" class="name"> 85<col class="description"> 86</colgroup> 87<tbody><tr> 88<td class="datatype_keyword">struct</td> 89<td class="function_name"><a class="link" href="gst-plugins-good-plugins-rtprtxsend.html#GstRtpRtxSend-struct" title="struct GstRtpRtxSend">GstRtpRtxSend</a></td> 90</tr></tbody> 91</table></div> 92</div> 93<div class="refsect1"> 94<a name="gst-plugins-good-plugins-rtprtxsend.object-hierarchy"></a><h2>Object Hierarchy</h2> 95<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 96 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 97 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 98 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 99 <span class="lineart">╰──</span> GstRtpRtxSend 100</pre> 101</div> 102<div class="refsect1"> 103<a name="gst-plugins-good-plugins-rtprtxsend.description"></a><h2>Description</h2> 104<p>See <a class="link" href="gst-plugins-good-plugins-rtprtxreceive.html#GstRtpRtxReceive"><span class="type">GstRtpRtxReceive</span></a> for examples</p> 105<p>The purpose of the sender RTX object is to keep a history of RTP packets up 106to a configurable limit (max-size-time or max-size-packets). It will listen 107for upstream custom retransmission events (GstRTPRetransmissionRequest) that 108comes 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 109look up the requested seqnum in its list of stored packets. If the packet 110is available, it will create a RTX packet according to RFC 4588 and send 111this as an auxiliary stream. RTX is SSRC-multiplexed</p> 112<div class="refsynopsisdiv"> 113<h2>Synopsis</h2> 114<div class="refsect2"> 115<a name="id-1.2.212.7.4.1"></a><h3>Element Information</h3> 116<div class="variablelist"><table border="0" class="variablelist"> 117<colgroup> 118<col align="left" valign="top"> 119<col> 120</colgroup> 121<tbody> 122<tr> 123<td><p><span class="term">plugin</span></p></td> 124<td> 125 <a class="link" href="gst-plugins-good-plugins-plugin-rtpmanager.html#plugin-rtpmanager">rtpmanager</a> 126 </td> 127</tr> 128<tr> 129<td><p><span class="term">author</span></p></td> 130<td>Julien Isorce <julien.isorce@collabora.co.uk></td> 131</tr> 132<tr> 133<td><p><span class="term">class</span></p></td> 134<td>Codec</td> 135</tr> 136</tbody> 137</table></div> 138</div> 139<hr> 140<div class="refsect2"> 141<a name="id-1.2.212.7.4.2"></a><h3>Element Pads</h3> 142<div class="variablelist"><table border="0" class="variablelist"> 143<colgroup> 144<col align="left" valign="top"> 145<col> 146</colgroup> 147<tbody> 148<tr> 149<td><p><span class="term">name</span></p></td> 150<td>sink</td> 151</tr> 152<tr> 153<td><p><span class="term">direction</span></p></td> 154<td>sink</td> 155</tr> 156<tr> 157<td><p><span class="term">presence</span></p></td> 158<td>always</td> 159</tr> 160<tr> 161<td><p><span class="term">details</span></p></td> 162<td>application/x-rtp, clock-rate=(int)[ 1, 2147483647 ]</td> 163</tr> 164</tbody> 165</table></div> 166<div class="variablelist"><table border="0" class="variablelist"> 167<colgroup> 168<col align="left" valign="top"> 169<col> 170</colgroup> 171<tbody> 172<tr> 173<td><p><span class="term">name</span></p></td> 174<td>src</td> 175</tr> 176<tr> 177<td><p><span class="term">direction</span></p></td> 178<td>source</td> 179</tr> 180<tr> 181<td><p><span class="term">presence</span></p></td> 182<td>always</td> 183</tr> 184<tr> 185<td><p><span class="term">details</span></p></td> 186<td>application/x-rtp</td> 187</tr> 188</tbody> 189</table></div> 190</div> 191</div> 192</div> 193<div class="refsect1"> 194<a name="gst-plugins-good-plugins-rtprtxsend.functions_details"></a><h2>Functions</h2> 195<p></p> 196</div> 197<div class="refsect1"> 198<a name="gst-plugins-good-plugins-rtprtxsend.other_details"></a><h2>Types and Values</h2> 199<div class="refsect2"> 200<a name="GstRtpRtxSend-struct"></a><h3>struct GstRtpRtxSend</h3> 201<pre class="programlisting">struct GstRtpRtxSend;</pre> 202</div> 203</div> 204<div class="refsect1"> 205<a name="gst-plugins-good-plugins-rtprtxsend.property-details"></a><h2>Property Details</h2> 206<div class="refsect2"> 207<a name="GstRtpRtxSend--max-size-time"></a><h3>The <code class="literal">“max-size-time”</code> property</h3> 208<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> 209<p>Amount of ms to queue (0 = unlimited).</p> 210<p>Flags: Read / Write</p> 211<p>Default value: 0</p> 212</div> 213<hr> 214<div class="refsect2"> 215<a name="GstRtpRtxSend--max-size-packets"></a><h3>The <code class="literal">“max-size-packets”</code> property</h3> 216<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> 217<p>Amount of packets to queue (0 = unlimited).</p> 218<p>Flags: Read / Write</p> 219<p>Allowed values: <= 32767</p> 220<p>Default value: 100</p> 221</div> 222<hr> 223<div class="refsect2"> 224<a name="GstRtpRtxSend--num-rtx-requests"></a><h3>The <code class="literal">“num-rtx-requests”</code> property</h3> 225<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> 226<p>Number of retransmission events received.</p> 227<p>Flags: Read</p> 228<p>Default value: 0</p> 229</div> 230<hr> 231<div class="refsect2"> 232<a name="GstRtpRtxSend--num-rtx-packets"></a><h3>The <code class="literal">“num-rtx-packets”</code> property</h3> 233<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> 234<p> Number of retransmission packets sent.</p> 235<p>Flags: Read</p> 236<p>Default value: 0</p> 237</div> 238<hr> 239<div class="refsect2"> 240<a name="GstRtpRtxSend--payload-type-map"></a><h3>The <code class="literal">“payload-type-map”</code> property</h3> 241<pre class="programlisting"> “payload-type-map” <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html#GstStructure-struct"><span class="type">GstStructure</span></a> *</pre> 242<p>Map of original payload types to their retransmission payload types.</p> 243<p>Flags: Read / Write</p> 244</div> 245<hr> 246<div class="refsect2"> 247<a name="GstRtpRtxSend--ssrc-map"></a><h3>The <code class="literal">“ssrc-map”</code> property</h3> 248<pre class="programlisting"> “ssrc-map” <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html#GstStructure-struct"><span class="type">GstStructure</span></a> *</pre> 249<p>Map of SSRCs to their retransmission SSRCs for SSRC-multiplexed mode (default = random).</p> 250<p>Flags: Write</p> 251</div> 252</div> 253</div> 254<div class="footer"> 255<hr>Generated by GTK-Doc V1.28</div> 256</body> 257</html>
