/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/GstAudioSrc.html is in gstreamer1.0-plugins-base-doc 1.14.0-2ubuntu1.
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 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GstAudioSrc: GStreamer Base Plugins 1.0 Library Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="GStreamer Base Plugins 1.0 Library Reference Manual">
<link rel="up" href="gstreamer-audio.html" title="Audio Library">
<link rel="prev" href="GstAudioSink.html" title="GstAudioSink">
<link rel="next" href="GstAudioBaseSink.html" title="GstAudioBaseSink">
<meta name="generator" content="GTK-Doc V1.27 (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="#GstAudioSrc.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span>
<a href="#GstAudioSrc.object-hierarchy" class="shortcut">Object Hierarchy</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="gstreamer-audio.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="GstAudioSink.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="GstAudioBaseSink.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="GstAudioSrc"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GstAudioSrc.top_of_page"></a>GstAudioSrc</span></h2>
<p>GstAudioSrc — Simple base class for audio sources</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GstAudioSrc.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="GstAudioSrc.html#GstAudioSrc-struct" title="struct GstAudioSrc">GstAudioSrc</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GstAudioSrc.html#GstAudioSrcClass" title="struct GstAudioSrcClass">GstAudioSrcClass</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstAudioSrc.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="../gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
<span class="lineart">╰──</span> <a href="../gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
<span class="lineart">╰──</span> <a href="../gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
<span class="lineart">╰──</span> <a href="../gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
<span class="lineart">╰──</span> <a href="../gstreamer-libs-1.0/GstBaseSrc.html#GstBaseSrc-struct">GstBaseSrc</a>
<span class="lineart">╰──</span> <a href="../gstreamer-libs-1.0/GstPushSrc.html#GstPushSrc-struct">GstPushSrc</a>
<span class="lineart">╰──</span> <a class="link" href="GstAudioBaseSrc.html" title="GstAudioBaseSrc">GstAudioBaseSrc</a>
<span class="lineart">╰──</span> GstAudioSrc
</pre>
</div>
<div class="refsect1">
<a name="GstAudioSrc.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gst/audio/gstaudiosrc.h>
</pre>
</div>
<div class="refsect1">
<a name="GstAudioSrc.description"></a><h2>Description</h2>
<p>This is the most simple base class for audio sources that only requires
subclasses to implement a set of simple functions:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p><code class="literal"><code class="function">open()</code></code> :Open the device.</p></li>
<li class="listitem"><p><code class="literal"><code class="function">prepare()</code></code> :Configure the device with the specified format.</p></li>
<li class="listitem"><p><code class="literal"><code class="function">read()</code></code> :Read samples from the device.</p></li>
<li class="listitem"><p><code class="literal"><code class="function">reset()</code></code> :Unblock reads and flush the device.</p></li>
<li class="listitem"><p><code class="literal"><code class="function">delay()</code></code> :Get the number of samples in the device but not yet read.</p></li>
<li class="listitem"><p><code class="literal"><code class="function">unprepare()</code></code> :Undo operations done by prepare.</p></li>
<li class="listitem"><p><code class="literal"><code class="function">close()</code></code> :Close the device.</p></li>
</ul></div>
<p>All scheduling of samples and timestamps is done in this base class
together with <a class="link" href="GstAudioBaseSrc.html" title="GstAudioBaseSrc"><span class="type">GstAudioBaseSrc</span></a> using a default implementation of a
<a class="link" href="GstAudioRingBuffer.html" title="GstAudioRingBuffer"><span class="type">GstAudioRingBuffer</span></a> that uses threads.</p>
</div>
<div class="refsect1">
<a name="GstAudioSrc.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="GstAudioSrc.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstAudioSrc-struct"></a><h3>struct GstAudioSrc</h3>
<pre class="programlisting">struct GstAudioSrc;</pre>
<p>Base class for simple audio sources.</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioSrcClass"></a><h3>struct GstAudioSrcClass</h3>
<pre class="programlisting">struct GstAudioSrcClass {
GstAudioBaseSrcClass parent_class;
/* vtable */
/* open the device with given specs */
gboolean (*open) (GstAudioSrc *src);
/* prepare resources and state to operate with the given specs */
gboolean (*prepare) (GstAudioSrc *src, GstAudioRingBufferSpec *spec);
/* undo anything that was done in prepare() */
gboolean (*unprepare) (GstAudioSrc *src);
/* close the device */
gboolean (*close) (GstAudioSrc *src);
/* read samples from the device */
guint (*read) (GstAudioSrc *src, gpointer data, guint length,
GstClockTime *timestamp);
/* get number of frames queued in the device */
guint (*delay) (GstAudioSrc *src);
/* reset the audio device, unblock from a write */
void (*reset) (GstAudioSrc *src);
};
</pre>
<p><a class="link" href="GstAudioSrc.html" title="GstAudioSrc"><span class="type">GstAudioSrc</span></a> class. Override the vmethod to implement
functionality.</p>
<div class="refsect3">
<a name="GstAudioSrcClass.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>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioSrcClass.open"></a>open</code></em> ()</p></td>
<td class="struct_member_description"><p>open the device with the specified caps</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioSrcClass.prepare"></a>prepare</code></em> ()</p></td>
<td class="struct_member_description"><p>configure device with format</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioSrcClass.unprepare"></a>unprepare</code></em> ()</p></td>
<td class="struct_member_description"><p>undo the configuration</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioSrcClass.close"></a>close</code></em> ()</p></td>
<td class="struct_member_description"><p>close the device</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioSrcClass.read"></a>read</code></em> ()</p></td>
<td class="struct_member_description"><p>read samples from the audio device</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioSrcClass.delay"></a>delay</code></em> ()</p></td>
<td class="struct_member_description"><p>the number of frames queued in the device</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioSrcClass.reset"></a>reset</code></em> ()</p></td>
<td class="struct_member_description"><p>unblock a read to the device and reset.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="GstAudioSrc.see-also"></a><h2>See Also</h2>
<p><a class="link" href="GstAudioBaseSrc.html" title="GstAudioBaseSrc"><span class="type">GstAudioBaseSrc</span></a>, <a class="link" href="GstAudioRingBuffer.html" title="GstAudioRingBuffer"><span class="type">GstAudioRingBuffer</span></a>, <a class="link" href="GstAudioSrc.html" title="GstAudioSrc"><span class="type">GstAudioSrc</span></a>.</p>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.27</div>
</body>
</html>
|