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>monoscope: 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-mj2mux.html" title="mj2mux"> 10<link rel="next" href="gst-plugins-good-plugins-mp4mux.html" title="mp4mux"> 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 width="100%" align="left" class="shortcuts"> 17<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> 18 <a href="#gst-plugins-good-plugins-monoscope.description" class="shortcut">Description</a></span> 19</td> 20<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> 21<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> 22<td><a accesskey="p" href="gst-plugins-good-plugins-mj2mux.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> 23<td><a accesskey="n" href="gst-plugins-good-plugins-mp4mux.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 24</tr></table> 25<div class="refentry"> 26<a name="gst-plugins-good-plugins-monoscope"></a><div class="titlepage"></div> 27<div class="refnamediv"><table width="100%"><tr> 28<td valign="top"> 29<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-monoscope.top_of_page"></a>monoscope</span></h2> 30<p>monoscope</p> 31</td> 32<td class="gallery_image" valign="top" align="right"></td> 33</tr></table></div> 34<div class="refsect1"> 35<a name="gst-plugins-good-plugins-monoscope.other"></a><h2>Types and Values</h2> 36<div class="informaltable"><table class="informaltable" width="100%" border="0"> 37<colgroup> 38<col width="150px" class="name"> 39<col class="description"> 40</colgroup> 41<tbody><tr> 42<td class="datatype_keyword">struct</td> 43<td class="function_name"><a class="link" href="gst-plugins-good-plugins-monoscope.html#GstMonoscope" title="struct GstMonoscope">GstMonoscope</a></td> 44</tr></tbody> 45</table></div> 46</div> 47<div class="refsect1"> 48<a name="gst-plugins-good-plugins-monoscope.description"></a><h2>Description</h2> 49<p>Monoscope is an audio visualisation element. It creates a coloured 50curve of the audio signal like on an oscilloscope.</p> 51<div class="refsect2"> 52<a name="id-1.2.92.4.3"></a><h3>Example launch line</h3> 53<div class="informalexample"> 54 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 55 <tbody> 56 <tr> 57 <td class="listing_lines" align="right"><pre>1</pre></td> 58 <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> <span class="gtkdoc opt">-</span>v audiotestsrc <span class="gtkdoc opt">!</span> audioconvert <span class="gtkdoc opt">!</span> monoscope <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> ximagesink</pre></td> 59 </tr> 60 </tbody> 61 </table> 62</div> 63 64</div> 65<div class="refsynopsisdiv"> 66<h2>Synopsis</h2> 67<div class="refsect2"> 68<a name="id-1.2.92.4.4.1"></a><h3>Element Information</h3> 69<div class="variablelist"><table border="0" class="variablelist"> 70<colgroup> 71<col align="left" valign="top"> 72<col> 73</colgroup> 74<tbody> 75<tr> 76<td><p><span class="term">plugin</span></p></td> 77<td> 78 <a class="link" href="gst-plugins-good-plugins-plugin-monoscope.html#plugin-monoscope">monoscope</a> 79 </td> 80</tr> 81<tr> 82<td><p><span class="term">author</span></p></td> 83<td>Richard Boulton <richard@tartarus.org></td> 84</tr> 85<tr> 86<td><p><span class="term">class</span></p></td> 87<td>Visualization</td> 88</tr> 89</tbody> 90</table></div> 91</div> 92<hr> 93<div class="refsect2"> 94<a name="id-1.2.92.4.4.2"></a><h3>Element Pads</h3> 95<div class="variablelist"><table border="0" class="variablelist"> 96<colgroup> 97<col align="left" valign="top"> 98<col> 99</colgroup> 100<tbody> 101<tr> 102<td><p><span class="term">name</span></p></td> 103<td>sink</td> 104</tr> 105<tr> 106<td><p><span class="term">direction</span></p></td> 107<td>sink</td> 108</tr> 109<tr> 110<td><p><span class="term">presence</span></p></td> 111<td>always</td> 112</tr> 113<tr> 114<td><p><span class="term">details</span></p></td> 115<td>audio/x-raw, format=(string)S16LE, rate=(int)[ 8000, 96000 ], channels=(int)1, layout=(string)interleaved</td> 116</tr> 117</tbody> 118</table></div> 119<div class="variablelist"><table border="0" class="variablelist"> 120<colgroup> 121<col align="left" valign="top"> 122<col> 123</colgroup> 124<tbody> 125<tr> 126<td><p><span class="term">name</span></p></td> 127<td>src</td> 128</tr> 129<tr> 130<td><p><span class="term">direction</span></p></td> 131<td>source</td> 132</tr> 133<tr> 134<td><p><span class="term">presence</span></p></td> 135<td>always</td> 136</tr> 137<tr> 138<td><p><span class="term">details</span></p></td> 139<td>video/x-raw, format=(string)BGRx, width=(int)256, height=(int)128, framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 140</tr> 141</tbody> 142</table></div> 143</div> 144</div> 145</div> 146<div class="refsect1"> 147<a name="gst-plugins-good-plugins-monoscope.functions_details"></a><h2>Functions</h2> 148<p></p> 149</div> 150<div class="refsect1"> 151<a name="gst-plugins-good-plugins-monoscope.other_details"></a><h2>Types and Values</h2> 152<div class="refsect2"> 153<a name="GstMonoscope"></a><h3>struct GstMonoscope</h3> 154<pre class="programlisting">struct GstMonoscope { 155 GstElement element; 156 157 /* pads */ 158 GstPad *sinkpad; 159 GstPad *srcpad; 160 161 GstAdapter *adapter; 162 163 guint64 next_ts; /* expected timestamp of the next frame */ 164 guint64 frame_duration; /* video frame duration */ 165 gint rate; /* sample rate */ 166 guint bps; /* bytes per sample */ 167 guint spf; /* samples per video frame */ 168 GstBufferPool *pool; 169 170 GstSegment segment; 171 gboolean segment_pending; 172 173 /* QoS stuff *//* with LOCK */ 174 gdouble proportion; 175 GstClockTime earliest_time; 176 177 /* video state */ 178 gint fps_num; 179 gint fps_denom; 180 gint width; 181 gint height; 182 guint outsize; 183 184 /* visualisation state */ 185 struct monoscope_state *visstate; 186}; 187</pre> 188</div> 189</div> 190<div class="refsect1"> 191<a name="gst-plugins-good-plugins-monoscope.see-also"></a><h2>See Also</h2> 192<p>goom</p> 193</div> 194</div> 195<div class="footer"> 196<hr>Generated by GTK-Doc V1.28</div> 197</body> 198</html>
