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>vertigotv: 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-v4l2src.html" title="v4l2src"> 10<link rel="next" href="gst-plugins-good-plugins-videobalance.html" title="videobalance"> 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-vertigotv.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 19 <a href="#gst-plugins-good-plugins-vertigotv.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties"> <span class="dim">|</span> 20 <a href="#gst-plugins-good-plugins-vertigotv.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-good-plugins-v4l2src.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> 25<td><a accesskey="n" href="gst-plugins-good-plugins-videobalance.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-good-plugins-vertigotv"></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-good-plugins-vertigotv.top_of_page"></a>vertigotv</span></h2> 32<p>vertigotv</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-good-plugins-vertigotv.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> 45<tr> 46<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a></td> 47<td class="property_name"><a class="link" href="gst-plugins-good-plugins-vertigotv.html#GstVertigoTV--speed" title="The “speed” property">speed</a></td> 48<td class="property_flags">Read / Write</td> 49</tr> 50<tr> 51<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a></td> 52<td class="property_name"><a class="link" href="gst-plugins-good-plugins-vertigotv.html#GstVertigoTV--zoom-speed" title="The “zoom-speed” property">zoom-speed</a></td> 53<td class="property_flags">Read / Write</td> 54</tr> 55</tbody> 56</table></div> 57</div> 58<a name="GstVertigoTV"></a><div class="refsect1"> 59<a name="gst-plugins-good-plugins-vertigotv.other"></a><h2>Types and Values</h2> 60<div class="informaltable"><table class="informaltable" width="100%" border="0"> 61<colgroup> 62<col width="150px" class="name"> 63<col class="description"> 64</colgroup> 65<tbody><tr> 66<td class="datatype_keyword">struct</td> 67<td class="function_name"><a class="link" href="gst-plugins-good-plugins-vertigotv.html#GstVertigoTV-struct" title="struct GstVertigoTV">GstVertigoTV</a></td> 68</tr></tbody> 69</table></div> 70</div> 71<div class="refsect1"> 72<a name="gst-plugins-good-plugins-vertigotv.object-hierarchy"></a><h2>Object Hierarchy</h2> 73<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 74 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 75 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 76 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 77 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseTransform.html#GstBaseTransform-struct">GstBaseTransform</a> 78 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/GstVideoFilter.html#GstVideoFilter-struct">GstVideoFilter</a> 79 <span class="lineart">╰──</span> GstVertigoTV 80</pre> 81</div> 82<div class="refsect1"> 83<a name="gst-plugins-good-plugins-vertigotv.description"></a><h2>Description</h2> 84<p>VertigoTV is a loopback alpha blending effector with rotating and scaling.</p> 85<div class="refsect2"> 86<a name="id-1.2.264.7.3"></a><h3>Example launch line</h3> 87<div class="informalexample"> 88 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 89 <tbody> 90 <tr> 91 <td class="listing_lines" align="right"><pre>1</pre></td> 92 <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 videotestsrc <span class="gtkdoc opt">!</span> vertigotv <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> autovideosink</pre></td> 93 </tr> 94 </tbody> 95 </table> 96</div> 97 This pipeline shows the effect of vertigotv on a test stream. 98</div> 99<div class="refsynopsisdiv"> 100<h2>Synopsis</h2> 101<div class="refsect2"> 102<a name="id-1.2.264.7.4.1"></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-good-plugins-plugin-effectv.html#plugin-effectv">effectv</a> 113 </td> 114</tr> 115<tr> 116<td><p><span class="term">author</span></p></td> 117<td>Wim Taymans <wim.taymans@gmail.be></td> 118</tr> 119<tr> 120<td><p><span class="term">class</span></p></td> 121<td>Filter/Effect/Video</td> 122</tr> 123</tbody> 124</table></div> 125</div> 126<hr> 127<div class="refsect2"> 128<a name="id-1.2.264.7.4.2"></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>sink</td> 138</tr> 139<tr> 140<td><p><span class="term">direction</span></p></td> 141<td>sink</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>video/x-raw, format=(string){ RGBx, BGRx }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 150</tr> 151</tbody> 152</table></div> 153<div class="variablelist"><table border="0" class="variablelist"> 154<colgroup> 155<col align="left" valign="top"> 156<col> 157</colgroup> 158<tbody> 159<tr> 160<td><p><span class="term">name</span></p></td> 161<td>src</td> 162</tr> 163<tr> 164<td><p><span class="term">direction</span></p></td> 165<td>source</td> 166</tr> 167<tr> 168<td><p><span class="term">presence</span></p></td> 169<td>always</td> 170</tr> 171<tr> 172<td><p><span class="term">details</span></p></td> 173<td>video/x-raw, format=(string){ RGBx, BGRx }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 174</tr> 175</tbody> 176</table></div> 177</div> 178</div> 179</div> 180<div class="refsect1"> 181<a name="gst-plugins-good-plugins-vertigotv.functions_details"></a><h2>Functions</h2> 182<p></p> 183</div> 184<div class="refsect1"> 185<a name="gst-plugins-good-plugins-vertigotv.other_details"></a><h2>Types and Values</h2> 186<div class="refsect2"> 187<a name="GstVertigoTV-struct"></a><h3>struct GstVertigoTV</h3> 188<pre class="programlisting">struct GstVertigoTV;</pre> 189</div> 190</div> 191<div class="refsect1"> 192<a name="gst-plugins-good-plugins-vertigotv.property-details"></a><h2>Property Details</h2> 193<div class="refsect2"> 194<a name="GstVertigoTV--speed"></a><h3>The <code class="literal">“speed”</code> property</h3> 195<pre class="programlisting"> “speed” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a></pre> 196<p>Control the speed of movement.</p> 197<p>Flags: Read / Write</p> 198<p>Allowed values: [0.01,100]</p> 199<p>Default value: 0.02</p> 200</div> 201<hr> 202<div class="refsect2"> 203<a name="GstVertigoTV--zoom-speed"></a><h3>The <code class="literal">“zoom-speed”</code> property</h3> 204<pre class="programlisting"> “zoom-speed” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a></pre> 205<p>Control the rate of zooming.</p> 206<p>Flags: Read / Write</p> 207<p>Allowed values: [1.01,1.1]</p> 208<p>Default value: 1.01</p> 209</div> 210</div> 211</div> 212<div class="footer"> 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