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>alsamidisrc: GStreamer Base 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 Base Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-base Elements"> 9<link rel="prev" href="gst-plugins-base-plugins-adder.html" title="adder"> 10<link rel="next" href="gst-plugins-base-plugins-alsasink.html" title="alsasink"> 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-base-plugins-alsamidisrc.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 19 <a href="#gst-plugins-base-plugins-alsamidisrc.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties"> <span class="dim">|</span> 20 <a href="#gst-plugins-base-plugins-alsamidisrc.properties" class="shortcut">Properties</a></span> 21</td> 22<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> 23<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> 24<td><a accesskey="p" href="gst-plugins-base-plugins-adder.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> 25<td><a accesskey="n" href="gst-plugins-base-plugins-alsasink.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 26</tr></table> 27<div class="refentry"> 28<a name="gst-plugins-base-plugins-alsamidisrc"></a><div class="titlepage"></div> 29<div class="refnamediv"><table width="100%"><tr> 30<td valign="top"> 31<h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-alsamidisrc.top_of_page"></a>alsamidisrc</span></h2> 32<p>alsamidisrc</p> 33</td> 34<td class="gallery_image" valign="top" align="right"></td> 35</tr></table></div> 36<div class="refsect1"> 37<a name="gst-plugins-base-plugins-alsamidisrc.properties"></a><h2>Properties</h2> 38<div class="informaltable"><table class="informaltable" border="0"> 39<colgroup> 40<col width="150px" class="properties_type"> 41<col width="300px" class="properties_name"> 42<col width="200px" class="properties_flags"> 43</colgroup> 44<tbody><tr> 45<td class="property_type"> 46<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td> 47<td class="property_name"><a class="link" href="gst-plugins-base-plugins-alsamidisrc.html#GstAlsaMidiSrc--ports" title="The “ports” property">ports</a></td> 48<td class="property_flags">Read / Write</td> 49</tr></tbody> 50</table></div> 51</div> 52<a name="GstAlsaMidiSrc"></a><div class="refsect1"> 53<a name="gst-plugins-base-plugins-alsamidisrc.other"></a><h2>Types and Values</h2> 54<div class="informaltable"><table class="informaltable" width="100%" border="0"> 55<colgroup> 56<col width="150px" class="name"> 57<col class="description"> 58</colgroup> 59<tbody><tr> 60<td class="datatype_keyword">struct</td> 61<td class="function_name"><a class="link" href="gst-plugins-base-plugins-alsamidisrc.html#GstAlsaMidiSrc-struct" title="struct GstAlsaMidiSrc">GstAlsaMidiSrc</a></td> 62</tr></tbody> 63</table></div> 64</div> 65<div class="refsect1"> 66<a name="gst-plugins-base-plugins-alsamidisrc.object-hierarchy"></a><h2>Object Hierarchy</h2> 67<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 68 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 69 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 70 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 71 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseSrc.html#GstBaseSrc-struct">GstBaseSrc</a> 72 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstPushSrc.html#GstPushSrc-struct">GstPushSrc</a> 73 <span class="lineart">╰──</span> GstAlsaMidiSrc 74</pre> 75</div> 76<div class="refsect1"> 77<a name="gst-plugins-base-plugins-alsamidisrc.description"></a><h2>Description</h2> 78<p>The alsamidisrc element is an element that fetches ALSA MIDI sequencer 79events and makes them available to elements understanding 80audio/x-midi-events in their sink pads.</p> 81<p>It can be used to generate notes from a MIDI input device.</p> 82<div class="refsect3"> 83<a name="id-1.2.3.7.4"></a><h4>Example launch line</h4> 84<div class="informalexample"> 85 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 86 <tbody> 87 <tr> 88 <td class="listing_lines" align="right"><pre>1</pre></td> 89 <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch <span class="gtkdoc opt">-</span>v alsamidisrc ports<span class="gtkdoc opt">=</span><span class="number">129</span><span class="gtkdoc opt">:</span><span class="number">0</span> <span class="gtkdoc opt">!</span> fluiddec <span class="gtkdoc opt">!</span> audioconvert <span class="gtkdoc opt">!</span> autoaudiosink</pre></td> 90 </tr> 91 </tbody> 92 </table> 93</div> 94 95<p> 96 This pipeline will listen for events from the sequencer device at port 129:0, 97and generate notes using the fluiddec element.</p> 98</div> 99<div class="refsynopsisdiv"> 100<h2>Synopsis</h2> 101<div class="refsect2"> 102<a name="id-1.2.3.7.5.1"></a><h3>Element Information</h3> 103<div class="variablelist"><table border="0" class="variablelist"> 104<colgroup> 105<col align="left" valign="top"> 106<col> 107</colgroup> 108<tbody> 109<tr> 110<td><p><span class="term">plugin</span></p></td> 111<td> 112 <a class="link" href="gst-plugins-base-plugins-plugin-alsa.html#plugin-alsa">alsa</a> 113 </td> 114</tr> 115<tr> 116<td><p><span class="term">author</span></p></td> 117<td>Antonio Ospite <ao2@ao2.it></td> 118</tr> 119<tr> 120<td><p><span class="term">class</span></p></td> 121<td>Source</td> 122</tr> 123</tbody> 124</table></div> 125</div> 126<hr> 127<div class="refsect2"> 128<a name="id-1.2.3.7.5.2"></a><h3>Element Pads</h3> 129<div class="variablelist"><table border="0" class="variablelist"> 130<colgroup> 131<col align="left" valign="top"> 132<col> 133</colgroup> 134<tbody> 135<tr> 136<td><p><span class="term">name</span></p></td> 137<td>src</td> 138</tr> 139<tr> 140<td><p><span class="term">direction</span></p></td> 141<td>source</td> 142</tr> 143<tr> 144<td><p><span class="term">presence</span></p></td> 145<td>always</td> 146</tr> 147<tr> 148<td><p><span class="term">details</span></p></td> 149<td>audio/x-midi-event</td> 150</tr> 151</tbody> 152</table></div> 153</div> 154</div> 155</div> 156<div class="refsect1"> 157<a name="gst-plugins-base-plugins-alsamidisrc.functions_details"></a><h2>Functions</h2> 158<p></p> 159</div> 160<div class="refsect1"> 161<a name="gst-plugins-base-plugins-alsamidisrc.other_details"></a><h2>Types and Values</h2> 162<div class="refsect2"> 163<a name="GstAlsaMidiSrc-struct"></a><h3>struct GstAlsaMidiSrc</h3> 164<pre class="programlisting">struct GstAlsaMidiSrc;</pre> 165<p>Opaque <a class="link" href="gst-plugins-base-plugins-alsamidisrc.html#GstAlsaMidiSrc"><span class="type">GstAlsaMidiSrc</span></a> data structure.</p> 166</div> 167</div> 168<div class="refsect1"> 169<a name="gst-plugins-base-plugins-alsamidisrc.property-details"></a><h2>Property Details</h2> 170<div class="refsect2"> 171<a name="GstAlsaMidiSrc--ports"></a><h3>The <code class="literal">“ports”</code> property</h3> 172<pre class="programlisting"> “ports” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre> 173<p>Comma separated list of sequencer ports (e.g. client:port,...).</p> 174<p>Flags: Read / Write</p> 175<p>Default value: NULL</p> 176</div> 177</div> 178<div class="refsect1"> 179<a name="gst-plugins-base-plugins-alsamidisrc.see-also"></a><h2>See Also</h2> 180<p><a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstPushSrc.html#GstPushSrc-struct"><span class="type">GstPushSrc</span></a></p> 181</div> 182</div> 183<div class="footer"> 184<hr>Generated by GTK-Doc V1.28</div> 185</body> 186</html>
