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| <div class="refentry"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc"></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-rtpdtmfsrc.top_of_page"></a>rtpdtmfsrc</span></h2> |
| <p>rtpdtmfsrc</p> |
| </td> |
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| </tr></table></div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc.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/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc--clock-rate" title="The “clock-rate” property">clock-rate</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc--packet-redundancy" title="The “packet-redundancy” property">packet-redundancy</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc--pt" title="The “pt” property">pt</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc--seqnum" title="The “seqnum” property">seqnum</a></td> |
| <td class="property_flags">Read</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc--seqnum-offset" title="The “seqnum-offset” property">seqnum-offset</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc--ssrc" title="The “ssrc” property">ssrc</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc--timestamp" title="The “timestamp” property">timestamp</a></td> |
| <td class="property_flags">Read</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc--timestamp-offset" title="The “timestamp-offset” property">timestamp-offset</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <a name="GstRTPDTMFSrc"></a><div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc.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-rtpdtmfsrc.html#GstRTPDTMFSrc-struct" title="struct GstRTPDTMFSrc">GstRTPDTMFSrc</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="screen"> <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct">GObject</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0GstObject.html#GstObject-struct">GstObject</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0GstElement.html#GstElement-struct">GstElement</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0GstBaseSrc.html#GstBaseSrc-struct">GstBaseSrc</a> |
| <span class="lineart">╰──</span> GstRTPDTMFSrc |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc.description"></a><h2>Description</h2> |
| <p>The RTPDTMFSrc element generates RTP DTMF (RFC 2833) event packets on request |
| from application. The application communicates the beginning and end of a |
| DTMF event using custom upstream gstreamer events. To report a DTMF event, an |
| application must send an event of type GST_EVENT_CUSTOM_UPSTREAM, having a |
| structure of name "dtmf-event" with fields set according to the following |
| table:</p> |
| <div class="informaltable"><table class="informaltable" border="1"> |
| <colgroup> |
| <col class="Name"> |
| <col class="Type"> |
| <col class="Possible values"> |
| <col class="Purpose"> |
| </colgroup> |
| <thead><tr> |
| <th>Name</th> |
| <th>GType</th> |
| <th>Possible values</th> |
| <th>Purpose</th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td>type</td> |
| <td>G_TYPE_INT</td> |
| <td>0-1</td> |
| <td>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 specied |
| by their number. This element can only take events as input. Do not confuse |
| with "method" which specified the output. |
| </td> |
| </tr> |
| <tr> |
| <td>number</td> |
| <td>G_TYPE_INT</td> |
| <td>0-15</td> |
| <td>The event number.</td> |
| </tr> |
| <tr> |
| <td>volume</td> |
| <td>G_TYPE_INT</td> |
| <td>0-36</td> |
| <td>This field describes the power level of the tone, expressed in dBm0 |
| after dropping the sign. Power levels range from 0 to -63 dBm0. The range of |
| valid DTMF is from 0 to -36 dBm0. Can be omitted if start is set to FALSE. |
| </td> |
| </tr> |
| <tr> |
| <td>start</td> |
| <td>G_TYPE_BOOLEAN</td> |
| <td>True or False</td> |
| <td>Whether the event is starting or ending.</td> |
| </tr> |
| <tr> |
| <td>method</td> |
| <td>G_TYPE_INT</td> |
| <td>1</td> |
| <td>The method used for sending event, this element will react if this |
| field is absent or 1. |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p>For example, the following code informs the pipeline (and in turn, the |
| RTPDTMFSrc element inside the pipeline) about the start of an RTP DTMF named |
| event '1' of volume -25 dBm0:</p> |
| <pre class="programlisting"> |
| structure = gst_structure_new ("dtmf-event", |
| "type", G_TYPE_INT, 1, |
| "number", G_TYPE_INT, 1, |
| "volume", G_TYPE_INT, 25, |
| "start", G_TYPE_BOOLEAN, TRUE, NULL); |
| |
| event = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM, structure); |
| gst_element_send_event (pipeline, event); |
| </pre> |
| <p>When a DTMF tone actually starts or stop, a "dtmf-event-processed" |
| element <a href="/usr/share/gtk-doc/html/gstreamer-1.0GstMessage.html#GstMessage-struct"><span class="type">GstMessage</span></a> with the same fields as the "dtmf-event" |
| <a href="/usr/share/gtk-doc/html/gstreamer-1.0GstEvent.html#GstEvent-struct"><span class="type">GstEvent</span></a> that was used to request the event. Also, if any event |
| has not been processed when the element goes from the PAUSED to the |
| READY state, then a "dtmf-event-dropped" message is posted on the |
| <a href="/usr/share/gtk-doc/html/gstreamer-1.0GstBus.html#GstBus-struct"><span class="type">GstBus</span></a> in the order that they were received.</p> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.138.7.7.1"></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-dtmf.html#plugin-dtmf">dtmf</a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term">author</span></p></td> |
| <td>Zeeshan Ali <zeeshan.ali@nokia.com></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">class</span></p></td> |
| <td>Source/Network</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="id-1.2.138.7.7.2"></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>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, media=(string)audio, payload=(int)[ 96, 127 ], clock-rate=(int)[ 0, 2147483647 ], encoding-name=(string)TELEPHONE-EVENT</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc-struct"></a><h3>struct GstRTPDTMFSrc</h3> |
| <pre class="programlisting">struct GstRTPDTMFSrc;</pre> |
| <p>The opaque <a class="link" href="gst-plugins-good-plugins-rtpdtmfsrc.html#GstRTPDTMFSrc"><span class="type">GstRTPDTMFSrc</span></a> data structure.</p> |
| <div class="refsect3"> |
| <a name="GstRTPDTMFSrc.members"></a><h4>Members</h4> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="300px" class="struct_members_name"> |
| <col class="struct_members_description"> |
| <col width="200px" class="struct_members_annotations"> |
| </colgroup> |
| <tbody></tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc--clock-rate"></a><h3>The <code class="literal">“clock-rate”</code> property</h3> |
| <pre class="programlisting"> “clock-rate” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>The clock-rate at which to generate the dtmf packets.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: 8000</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc--packet-redundancy"></a><h3>The <code class="literal">“packet-redundancy”</code> property</h3> |
| <pre class="programlisting"> “packet-redundancy” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Number of packets to send to indicate start and stop dtmf events.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [1,5]</p> |
| <p>Default value: 1</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc--pt"></a><h3>The <code class="literal">“pt”</code> property</h3> |
| <pre class="programlisting"> “pt” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>The payload type of the packets.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 128</p> |
| <p>Default value: 96</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc--seqnum"></a><h3>The <code class="literal">“seqnum”</code> property</h3> |
| <pre class="programlisting"> “seqnum” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>The RTP sequence number of the last processed packet.</p> |
| <p>Flags: Read</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc--seqnum-offset"></a><h3>The <code class="literal">“seqnum-offset”</code> property</h3> |
| <pre class="programlisting"> “seqnum-offset” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Offset to add to all outgoing seqnum (-1 = random).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: -1</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc--ssrc"></a><h3>The <code class="literal">“ssrc”</code> property</h3> |
| <pre class="programlisting"> “ssrc” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>The SSRC of the packets (-1 == random).</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: 4294967295</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc--timestamp"></a><h3>The <code class="literal">“timestamp”</code> property</h3> |
| <pre class="programlisting"> “timestamp” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>The RTP timestamp of the last processed packet.</p> |
| <p>Flags: Read</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRTPDTMFSrc--timestamp-offset"></a><h3>The <code class="literal">“timestamp-offset”</code> property</h3> |
| <pre class="programlisting"> “timestamp-offset” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Offset to add to all outgoing timestamps (-1 = random).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: -1</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-rtpdtmfsrc.see-also"></a><h2>See Also</h2> |
| <p>dtmfsrc, rtpdtmfdepay, rtpdtmfmux</p> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr>Generated by GTK-Doc V1.25</div> |
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