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| <tr><td colspan="5" class="shortcuts"> |
| <a href="#gst-plugins-good-plugins-rtpjitterbuffer.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#gst-plugins-good-plugins-rtpjitterbuffer.description" class="shortcut">Description</a> |
| | |
| <a href="#gst-plugins-good-plugins-rtpjitterbuffer.object-hierarchy" class="shortcut">Object Hierarchy</a> |
| | |
| <a href="#gst-plugins-good-plugins-rtpjitterbuffer.properties" class="shortcut">Properties</a> |
| | |
| <a href="#gst-plugins-good-plugins-rtpjitterbuffer.signals" class="shortcut">Signals</a> |
| </td></tr> |
| </table> |
| <div class="refentry"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer"></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-rtpjitterbuffer.top_of_page"></a>rtpjitterbuffer</span></h2> |
| <p>rtpjitterbuffer — A buffer that deals with network jitter and other transmission faults</p> |
| </td> |
| <td valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsynopsisdiv"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer.synopsis"></a><h2>Synopsis</h2> |
| <a name="GstRtpJitterBuffer"></a><pre class="synopsis">struct <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-struct" title="struct GstRtpJitterBuffer">GstRtpJitterBuffer</a>; |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="synopsis"> |
| <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a> |
| +----<a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a> |
| +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a> |
| +----GstRtpJitterBuffer |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer.properties"></a><h2>Properties</h2> |
| <pre class="synopsis"> |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--do-lost" title='The "do-lost" property'>do-lost</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--drop-on-latency" title='The "drop-on-latency" property'>drop-on-latency</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--latency" title='The "latency" property'>latency</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--ts-offset" title='The "ts-offset" property'>ts-offset</a>" <span class="type">gint64</span> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--mode" title='The "mode" property'>mode</a>" <span class="type">RTPJitterBufferMode</span> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--percent" title='The "percent" property'>percent</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--do-retransmission" title='The "do-retransmission" property'>do-retransmission</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-delay" title='The "rtx-delay" property'>rtx-delay</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-delay-reorder" title='The "rtx-delay-reorder" property'>rtx-delay-reorder</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-retry-period" title='The "rtx-retry-period" property'>rtx-retry-period</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-retry-timeout" title='The "rtx-retry-timeout" property'>rtx-retry-timeout</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer.signals"></a><h2>Signals</h2> |
| <pre class="synopsis"> |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-clear-pt-map" title='The "clear-pt-map" signal'>clear-pt-map</a>" : <code class="literal">Action</code> |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-handle-sync" title='The "handle-sync" signal'>handle-sync</a>" : <code class="literal">Run Last</code> |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-on-npt-stop" title='The "on-npt-stop" signal'>on-npt-stop</a>" : <code class="literal">Run Last</code> |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-request-pt-map" title='The "request-pt-map" signal'>request-pt-map</a>" : <code class="literal">Run Last</code> |
| "<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-set-active" title='The "set-active" signal'>set-active</a>" : <code class="literal">Action</code> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer.description"></a><h2>Description</h2> |
| <p> |
| This element reorders and removes duplicate RTP packets as they are received |
| from a network source. |
| </p> |
| <p> |
| The element needs the clock-rate of the RTP payload in order to estimate the |
| delay. This information is obtained either from the caps on the sink pad or, |
| when no caps are present, from the <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-request-pt-map" title='The "request-pt-map" signal'><span class="type">"request-pt-map"</span></a> signal. |
| To clear the previous pt-map use the <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-clear-pt-map" title='The "clear-pt-map" signal'><span class="type">"clear-pt-map"</span></a> signal. |
| </p> |
| <p> |
| The rtpjitterbuffer will wait for missing packets up to a configurable time |
| limit using the <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--latency" title='The "latency" property'><span class="type">"latency"</span></a> property. Packets arriving too |
| late are considered to be lost packets. If the <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--do-lost" title='The "do-lost" property'><span class="type">"do-lost"</span></a> |
| property is set, lost packets will result in a custom serialized downstream |
| event of name GstRTPPacketLost. The lost packet events are usually used by a |
| depayloader or other element to create concealment data or some other logic |
| to gracefully handle the missing packets. |
| </p> |
| <p> |
| The jitterbuffer will use the DTS (or PTS if no DTS is set) of the incomming |
| buffer and the rtptime inside the RTP packet to create a PTS on the outgoing |
| buffer. |
| </p> |
| <p> |
| The jitterbuffer can also be configured to send early retransmission events |
| upstream by setting the <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--do-retransmission" title='The "do-retransmission" property'><span class="type">"do-retransmission"</span></a> property. In |
| this mode, the jitterbuffer tries to estimate when a packet should arrive and |
| sends a custom upstream event named GstRTPRetransmissionRequest when the |
| packet is considered late. The initial expected packet arrival time is |
| calculated as follows: |
| </p> |
| <p> |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>If seqnum N arrived at time T, seqnum N+1 is expected to arrive at |
| T + packet-spacing + <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-delay" title='The "rtx-delay" property'><span class="type">"rtx-delay"</span></a>. The packet spacing is |
| calculated from the DTS (or PTS is no DTS) of two consecutive RTP |
| packets with different rtptime.</p></li></ul></div> |
| <p> |
| </p> |
| <p> |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>If seqnum N0 arrived at time T0 and seqnum Nm arrived at time Tm, |
| seqnum Ni is expected at time Ti = T0 + i*(Tm - T0)/(Nm - N0). Any |
| previously scheduled timeout is overwritten.</p></li></ul></div> |
| <p> |
| </p> |
| <p> |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>If seqnum N arrived, all seqnum older than |
| N - <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-delay-reorder" title='The "rtx-delay-reorder" property'><span class="type">"rtx-delay-reorder"</span></a> are considered late |
| immediately. This is to request fast feedback for abonormally reorder |
| packets before any of the previous timeouts is triggered.</p></li></ul></div> |
| <p> |
| </p> |
| <p> |
| A late packet triggers the GstRTPRetransmissionRequest custom upstream |
| event. After the initial timeout expires and the retransmission event is |
| sent, the timeout is scheduled for |
| T + <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-retry-timeout" title='The "rtx-retry-timeout" property'><span class="type">"rtx-retry-timeout"</span></a>. If the missing packet did not |
| arrive after <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-retry-timeout" title='The "rtx-retry-timeout" property'><span class="type">"rtx-retry-timeout"</span></a>, a new |
| GstRTPRetransmissionRequest is sent upstream and the timeout is rescheduled |
| again for T + <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-retry-timeout" title='The "rtx-retry-timeout" property'><span class="type">"rtx-retry-timeout"</span></a>. This repeats until |
| <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--rtx-retry-period" title='The "rtx-retry-period" property'><span class="type">"rtx-retry-period"</span></a> elapsed, at which point no further |
| retransmission requests are sent and the regular logic is performed to |
| schedule a lost packet as discussed above. |
| </p> |
| <p> |
| This element acts as a live element and so adds <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer--latency" title='The "latency" property'><span class="type">"latency"</span></a> |
| to the pipeline. |
| </p> |
| <p> |
| This element will automatically be used inside rtpbin. |
| </p> |
| <p> |
| </p> |
| <div class="refsect2"> |
| <a name="id-1.2.127.7.13.1"></a><h3>Example pipelines</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<span class="gtkdoc opt">-</span><span class="number">1.0</span> rtspsrc location<span class="gtkdoc opt">=</span>rtsp<span class="gtkdoc opt">:</span><span class="gtkdoc slc">//192.168.1.133:8554/mpeg1or2AudioVideoTest ! rtpjitterbuffer ! rtpmpvdepay ! mpeg2dec ! xvimagesink</span></pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| Connect to a streaming server and decode the MPEG video. The jitterbuffer is |
| inserted into the pipeline to smooth out network jitter and to reorder the |
| out-of-order RTP packets. |
| </div> |
| <p> |
| </p> |
| <p> |
| Last reviewed on 2007-05-28 (0.10.5) |
| </p> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.127.7.15.1"></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>Philippe Kalaf <philippe.kalaf@collabora.co.uk>, Wim Taymans <wim.taymans@gmail.com></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">class</span></p></td> |
| <td>Filter/Network/RTP</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="id-1.2.127.7.15.2"></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>sink_rtcp</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>application/x-rtcp</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> |
| <p> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer-struct"></a><h3>struct GstRtpJitterBuffer</h3> |
| <pre class="programlisting">struct GstRtpJitterBuffer;</pre> |
| <p> |
| Opaque jitterbuffer structure. |
| </p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--do-lost"></a><h3>The <code class="literal">"do-lost"</code> property</h3> |
| <pre class="programlisting"> "do-lost" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write</pre> |
| <p>Send an event downstream when a packet is lost.</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--drop-on-latency"></a><h3>The <code class="literal">"drop-on-latency"</code> property</h3> |
| <pre class="programlisting"> "drop-on-latency" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write</pre> |
| <p>Tells the jitterbuffer to never exceed the given latency in size.</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--latency"></a><h3>The <code class="literal">"latency"</code> property</h3> |
| <pre class="programlisting"> "latency" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write</pre> |
| <p>Amount of ms to buffer.</p> |
| <p>Default value: 200</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--ts-offset"></a><h3>The <code class="literal">"ts-offset"</code> property</h3> |
| <pre class="programlisting"> "ts-offset" <span class="type">gint64</span> : Read / Write</pre> |
| <p>Adjust buffer timestamps with offset in nanoseconds.</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--mode"></a><h3>The <code class="literal">"mode"</code> property</h3> |
| <pre class="programlisting"> "mode" <span class="type">RTPJitterBufferMode</span> : Read / Write</pre> |
| <p>Control the buffering algorithm in use.</p> |
| <p>Default value: Slave receiver to sender clock</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--percent"></a><h3>The <code class="literal">"percent"</code> property</h3> |
| <pre class="programlisting"> "percent" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read</pre> |
| <p>The buffer filled percent.</p> |
| <p>Allowed values: [0,100]</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--do-retransmission"></a><h3>The <code class="literal">"do-retransmission"</code> property</h3> |
| <pre class="programlisting"> "do-retransmission" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write</pre> |
| <p>Send retransmission events upstream when a packet is late.</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--rtx-delay"></a><h3>The <code class="literal">"rtx-delay"</code> property</h3> |
| <pre class="programlisting"> "rtx-delay" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write</pre> |
| <p>Extra time in ms to wait before sending retransmission event (-1 automatic).</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: 20</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--rtx-delay-reorder"></a><h3>The <code class="literal">"rtx-delay-reorder"</code> property</h3> |
| <pre class="programlisting"> "rtx-delay-reorder" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write</pre> |
| <p>Sending retransmission event when this much reordering (-1 automatic).</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: 3</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--rtx-retry-period"></a><h3>The <code class="literal">"rtx-retry-period"</code> property</h3> |
| <pre class="programlisting"> "rtx-retry-period" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write</pre> |
| <p>Try to get a retransmission for this many ms (-1 automatic).</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: 160</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer--rtx-retry-timeout"></a><h3>The <code class="literal">"rtx-retry-timeout"</code> property</h3> |
| <pre class="programlisting"> "rtx-retry-timeout" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write</pre> |
| <p>Retry sending a transmission event after this timeout in ms (-1 automatic).</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: 40</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpjitterbuffer.signal-details"></a><h2>Signal Details</h2> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer-clear-pt-map"></a><h3>The <code class="literal">"clear-pt-map"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer"><span class="type">GstRtpJitterBuffer</span></a> *buffer, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <code class="literal">Action</code></pre> |
| <p> |
| Invalidate the clock-rate as obtained with the |
| <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer-request-pt-map" title='The "request-pt-map" signal'><span class="type">"request-pt-map"</span></a> signal. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>the object which received the signal</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer-handle-sync"></a><h3>The <code class="literal">"handle-sync"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer"><span class="type">GstRtpJitterBuffer</span></a> *buffer, |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstStructure.html#GstStructure"><span class="type">GstStructure</span></a> *struct, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <code class="literal">Run Last</code></pre> |
| <p> |
| Be notified of new sync values. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>the object which received the signal</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>struct</code></em> :</span></p></td> |
| <td>a GstStructure containing sync values.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer-on-npt-stop"></a><h3>The <code class="literal">"on-npt-stop"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer"><span class="type">GstRtpJitterBuffer</span></a> *buffer, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <code class="literal">Run Last</code></pre> |
| <p> |
| Signal that the jitterbufer has pushed the RTP packet that corresponds to |
| the npt-stop position. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>the object which received the signal</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer-request-pt-map"></a><h3>The <code class="literal">"request-pt-map"</code> signal</h3> |
| <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstCaps.html#GstCaps"><span class="returnvalue">GstCaps</span></a>* user_function (<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer"><span class="type">GstRtpJitterBuffer</span></a> *buffer, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> pt, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <code class="literal">Run Last</code></pre> |
| <p> |
| Request the payload type as <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> for <em class="parameter"><code>pt</code></em>. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>the object which received the signal</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>pt</code></em> :</span></p></td> |
| <td>the pt</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRtpJitterBuffer-set-active"></a><h3>The <code class="literal">"set-active"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">guint64</span> user_function (<a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer"><span class="type">GstRtpJitterBuffer</span></a> *buffer, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> Returns, |
| <span class="type">guint64</span> arg2, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <code class="literal">Action</code></pre> |
| <p> |
| Start pushing out packets with the given base time. This signal is only |
| useful in buffering mode. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>the object which received the signal</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the time of the last pushed packet.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 0.10.19</p> |
| </div> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr> |
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