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>bs2b: GStreamer Bad 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 Bad Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-bad Elements"> 9<link rel="prev" href="gst-plugins-bad-plugins-bpmdetect.html" title="bpmdetect"> 10<link rel="next" href="gst-plugins-bad-plugins-bulge.html" title="bulge"> 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-bad-plugins-bs2b.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 19 <a href="#gst-plugins-bad-plugins-bs2b.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces"> <span class="dim">|</span> 20 <a href="#gst-plugins-bad-plugins-bs2b.implemented-interfaces" class="shortcut">Implemented Interfaces</a></span><span id="nav_properties"> <span class="dim">|</span> 21 <a href="#gst-plugins-bad-plugins-bs2b.properties" class="shortcut">Properties</a></span> 22</td> 23<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> 24<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> 25<td><a accesskey="p" href="gst-plugins-bad-plugins-bpmdetect.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> 26<td><a accesskey="n" href="gst-plugins-bad-plugins-bulge.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 27</tr></table> 28<div class="refentry"> 29<a name="gst-plugins-bad-plugins-bs2b"></a><div class="titlepage"></div> 30<div class="refnamediv"><table width="100%"><tr> 31<td valign="top"> 32<h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-bs2b.top_of_page"></a>bs2b</span></h2> 33<p>bs2b</p> 34</td> 35<td class="gallery_image" valign="top" align="right"></td> 36</tr></table></div> 37<div class="refsect1"> 38<a name="gst-plugins-bad-plugins-bs2b.properties"></a><h2>Properties</h2> 39<div class="informaltable"><table class="informaltable" border="0"> 40<colgroup> 41<col width="150px" class="properties_type"> 42<col width="300px" class="properties_name"> 43<col width="200px" class="properties_flags"> 44</colgroup> 45<tbody> 46<tr> 47<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 48<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-bs2b.html#GstBs2b--fcut" title="The “fcut” property">fcut</a></td> 49<td class="property_flags">Read / Write</td> 50</tr> 51<tr> 52<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 53<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-bs2b.html#GstBs2b--feed" title="The “feed” property">feed</a></td> 54<td class="property_flags">Read / Write</td> 55</tr> 56</tbody> 57</table></div> 58</div> 59<a name="GstBs2b"></a><div class="refsect1"> 60<a name="gst-plugins-bad-plugins-bs2b.other"></a><h2>Types and Values</h2> 61<div class="informaltable"><table class="informaltable" width="100%" border="0"> 62<colgroup> 63<col width="150px" class="name"> 64<col class="description"> 65</colgroup> 66<tbody><tr> 67<td class="datatype_keyword">struct</td> 68<td class="function_name"><a class="link" href="gst-plugins-bad-plugins-bs2b.html#GstBs2b-struct" title="struct GstBs2b">GstBs2b</a></td> 69</tr></tbody> 70</table></div> 71</div> 72<div class="refsect1"> 73<a name="gst-plugins-bad-plugins-bs2b.object-hierarchy"></a><h2>Object Hierarchy</h2> 74<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 75 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 76 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 77 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 78 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseTransform.html#GstBaseTransform-struct">GstBaseTransform</a> 79 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/GstAudioFilter.html#GstAudioFilter-struct">GstAudioFilter</a> 80 <span class="lineart">╰──</span> GstBs2b 81</pre> 82</div> 83<div class="refsect1"> 84<a name="gst-plugins-bad-plugins-bs2b.implemented-interfaces"></a><h2>Implemented Interfaces</h2> 85<p> 86GstBs2b implements 87 <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPreset.html#GstPreset-struct">GstPreset</a>.</p> 88</div> 89<div class="refsect1"> 90<a name="gst-plugins-bad-plugins-bs2b.description"></a><h2>Description</h2> 91<p>Improve headphone listening of stereo audio records using the bs2b library. 92It does so by mixing the left and right channel in a way that simulates 93a stereo speaker setup while using headphones.</p> 94<div class="refsect3"> 95<a name="id-1.2.24.8.3"></a><h4>Example pipelines</h4> 96<div class="informalexample"> 97 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 98 <tbody> 99 <tr> 100 <td class="listing_lines" align="right"><pre>1</pre></td> 101 <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> audiotestsrc <span class="gtkdoc opt">!</span> <span class="string">"audio/x-raw,channel-mask=(bitmask)0x1"</span> <span class="gtkdoc opt">!</span> interleave name<span class="gtkdoc opt">=</span>i <span class="gtkdoc opt">!</span> bs2b <span class="gtkdoc opt">!</span> autoaudiosink audiotestsrc freq<span class="gtkdoc opt">=</span><span class="number">330</span> <span class="gtkdoc opt">!</span> <span class="string">"audio/x-raw,channel-mask=(bitmask)0x2"</span> <span class="gtkdoc opt">!</span> i<span class="gtkdoc opt">.</span></pre></td> 102 </tr> 103 </tbody> 104 </table> 105</div> 106 107<p> Play two independent sine test sources and crossfeed them.</p> 108</div> 109<div class="refsynopsisdiv"> 110<h2>Synopsis</h2> 111<div class="refsect2"> 112<a name="id-1.2.24.8.4.1"></a><h3>Element Information</h3> 113<div class="variablelist"><table border="0" class="variablelist"> 114<colgroup> 115<col align="left" valign="top"> 116<col> 117</colgroup> 118<tbody> 119<tr> 120<td><p><span class="term">plugin</span></p></td> 121<td> 122 <a class="link" href="gst-plugins-bad-plugins-plugin-bs2b.html#plugin-bs2b">bs2b</a> 123 </td> 124</tr> 125<tr> 126<td><p><span class="term">author</span></p></td> 127<td>Christoph Reiter <reiter.christoph@gmail.com></td> 128</tr> 129<tr> 130<td><p><span class="term">class</span></p></td> 131<td>Filter/Effect/Audio</td> 132</tr> 133</tbody> 134</table></div> 135</div> 136<hr> 137<div class="refsect2"> 138<a name="id-1.2.24.8.4.2"></a><h3>Element Pads</h3> 139<div class="variablelist"><table border="0" class="variablelist"> 140<colgroup> 141<col align="left" valign="top"> 142<col> 143</colgroup> 144<tbody> 145<tr> 146<td><p><span class="term">name</span></p></td> 147<td>sink</td> 148</tr> 149<tr> 150<td><p><span class="term">direction</span></p></td> 151<td>sink</td> 152</tr> 153<tr> 154<td><p><span class="term">presence</span></p></td> 155<td>always</td> 156</tr> 157<tr> 158<td><p><span class="term">details</span></p></td> 159<td>audio/x-raw, format=(string){ S8, U8, S16LE, S16BE, U16LE, U16BE, S32LE, S32BE, U32LE, U32BE, S24LE, S24BE, U24LE, U24BE, F32LE, F32BE, F64LE, F64BE }, rate=(int)[ 2000, 384000 ], channels=(int)2, channel-mask=(bitmask)0x0000000000000003, layout=(string)interleaved</td> 160</tr> 161<tr> 162<td><p><span class="term"></span></p></td> 163<td> audio/x-raw, channels=(int)1</td> 164</tr> 165</tbody> 166</table></div> 167<div class="variablelist"><table border="0" class="variablelist"> 168<colgroup> 169<col align="left" valign="top"> 170<col> 171</colgroup> 172<tbody> 173<tr> 174<td><p><span class="term">name</span></p></td> 175<td>src</td> 176</tr> 177<tr> 178<td><p><span class="term">direction</span></p></td> 179<td>source</td> 180</tr> 181<tr> 182<td><p><span class="term">presence</span></p></td> 183<td>always</td> 184</tr> 185<tr> 186<td><p><span class="term">details</span></p></td> 187<td>audio/x-raw, format=(string){ S8, U8, S16LE, S16BE, U16LE, U16BE, S32LE, S32BE, U32LE, U32BE, S24LE, S24BE, U24LE, U24BE, F32LE, F32BE, F64LE, F64BE }, rate=(int)[ 2000, 384000 ], channels=(int)2, channel-mask=(bitmask)0x0000000000000003, layout=(string)interleaved</td> 188</tr> 189<tr> 190<td><p><span class="term"></span></p></td> 191<td> audio/x-raw, channels=(int)1</td> 192</tr> 193</tbody> 194</table></div> 195</div> 196</div> 197</div> 198<div class="refsect1"> 199<a name="gst-plugins-bad-plugins-bs2b.functions_details"></a><h2>Functions</h2> 200<p></p> 201</div> 202<div class="refsect1"> 203<a name="gst-plugins-bad-plugins-bs2b.other_details"></a><h2>Types and Values</h2> 204<div class="refsect2"> 205<a name="GstBs2b-struct"></a><h3>struct GstBs2b</h3> 206<pre class="programlisting">struct GstBs2b;</pre> 207</div> 208</div> 209<div class="refsect1"> 210<a name="gst-plugins-bad-plugins-bs2b.property-details"></a><h2>Property Details</h2> 211<div class="refsect2"> 212<a name="GstBs2b--fcut"></a><h3>The <code class="literal">“fcut”</code> property</h3> 213<pre class="programlisting"> “fcut” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 214<p>Low-pass filter cut frequency (Hz).</p> 215<p>Flags: Read / Write</p> 216<p>Allowed values: [300,2000]</p> 217<p>Default value: 700</p> 218</div> 219<hr> 220<div class="refsect2"> 221<a name="GstBs2b--feed"></a><h3>The <code class="literal">“feed”</code> property</h3> 222<pre class="programlisting"> “feed” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 223<p>Feed Level (dB/10).</p> 224<p>Flags: Read / Write</p> 225<p>Allowed values: [10,150]</p> 226<p>Default value: 45</p> 227</div> 228</div> 229</div> 230<div class="footer"> 231<hr>Generated by GTK-Doc V1.28</div> 232</body> 233</html>
