This file is indexed.

/usr/share/gtk-doc/html/gst-plugins-good-plugins-1.0/gst-plugins-good-plugins-dtmfsrc.html is in gstreamer1.0-plugins-good-doc 1.10.4-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>dtmfsrc: GStreamer Good Plugins 1.0 Plugins Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="GStreamer Good Plugins 1.0 Plugins Reference Manual">
<link rel="up" href="ch01.html" title="gst-plugins-good Elements">
<link rel="prev" href="gst-plugins-good-plugins-directsoundsink.html" title="directsoundsink">
<link rel="next" href="gst-plugins-good-plugins-dv1394src.html" title="dv1394src">
<meta name="generator" content="GTK-Doc V1.25 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#gst-plugins-good-plugins-dtmfsrc.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#gst-plugins-good-plugins-dtmfsrc.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties">  <span class="dim">|</span> 
                  <a href="#gst-plugins-good-plugins-dtmfsrc.properties" class="shortcut">Properties</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="gst-plugins-good-plugins-directsoundsink.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="gst-plugins-good-plugins-dv1394src.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="gst-plugins-good-plugins-dtmfsrc"></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-dtmfsrc.top_of_page"></a>dtmfsrc</span></h2>
<p>dtmfsrc</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-dtmfsrc.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-dtmfsrc.html#GstDTMFSrc--interval" title="The “interval” property">interval</a></td>
<td class="property_flags">Read / Write</td>
</tr></tbody>
</table></div>
</div>
<a name="GstDTMFSrc"></a><div class="refsect1">
<a name="gst-plugins-good-plugins-dtmfsrc.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-dtmfsrc.html#GstDTMFSrc-struct" title="struct GstDTMFSrc">GstDTMFSrc</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-dtmfsrc.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/GstBaseSrc.html#GstBaseSrc-struct">GstBaseSrc</a>
                    <span class="lineart">╰──</span> GstDTMFSrc
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-dtmfsrc.description"></a><h2>Description</h2>
<p>The DTMFSrc element generates DTMF (ITU-T Q.23 Specification) tone 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>2</td>
<td>The method used for sending event, this element will react if this
field is absent or 2.
</td>
</tr>
</tbody>
</table></div>
<p>For example, the following code informs the pipeline (and in turn, the
DTMFSrc element inside the pipeline) about the start of a 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-1.0/GstMessage.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-1.0/GstEvent.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-1.0/GstBus.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-1.2.47.7.7.1"></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>Youness Alaoui &lt;youness.alaoui@collabora.co.uk&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Source/Audio</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.47.7.7.2"></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>audio/x-raw, format=(string)S16LE, rate=(int)[ 1, 2147483647 ], channels=(int)1</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-dtmfsrc.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-dtmfsrc.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstDTMFSrc-struct"></a><h3>struct GstDTMFSrc</h3>
<pre class="programlisting">struct GstDTMFSrc;</pre>
<p>The opaque <a class="link" href="gst-plugins-good-plugins-dtmfsrc.html#GstDTMFSrc"><span class="type">GstDTMFSrc</span></a> data structure.</p>
<div class="refsect3">
<a name="GstDTMFSrc.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-dtmfsrc.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstDTMFSrc--interval"></a><h3>The <code class="literal">“interval”</code> property</h3>
<pre class="programlisting">  “interval”                 <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Interval in ms between two tone packets.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [10,50]</p>
<p>Default value: 50</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-dtmfsrc.see-also"></a><h2>See Also</h2>
<p>rtpdtmsrc, rtpdtmfmuxx</p>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.25</div>
</body>
</html>