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>smpte: 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-smptealpha.html" title="smptealpha"> 10<link rel="next" href="gst-plugins-good-plugins-souphttpclientsink.html" title="souphttpclientsink"> 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 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href="gst-plugins-good-plugins-souphttpclientsink.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-smpte"></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-smpte.top_of_page"></a>smpte</span></h2> 32<p>smpte</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-smpte.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#gint"><span class="type">gint</span></a></td> 47<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--border" title="The “border” property">border</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#gint"><span class="type">gint</span></a></td> 52<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--depth" title="The “depth” property">depth</a></td> 53<td class="property_flags">Read / Write</td> 54</tr> 55<tr> 56<td class="property_type"><span class="type">GstSMPTETransitionType</span></td> 57<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--type" title="The “type” property">type</a></td> 58<td class="property_flags">Read / Write</td> 59</tr> 60<tr> 61<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a></td> 62<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--duration" title="The “duration” property">duration</a></td> 63<td class="property_flags">Read / Write</td> 64</tr> 65<tr> 66<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> 67<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--invert" title="The “invert” property">invert</a></td> 68<td class="property_flags">Read / Write</td> 69</tr> 70</tbody> 71</table></div> 72</div> 73<a name="GstSMPTE"></a><div class="refsect1"> 74<a name="gst-plugins-good-plugins-smpte.other"></a><h2>Types and Values</h2> 75<div class="informaltable"><table class="informaltable" width="100%" border="0"> 76<colgroup> 77<col width="150px" class="name"> 78<col class="description"> 79</colgroup> 80<tbody><tr> 81<td class="datatype_keyword">struct</td> 82<td class="function_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE-struct" title="struct GstSMPTE">GstSMPTE</a></td> 83</tr></tbody> 84</table></div> 85</div> 86<div class="refsect1"> 87<a name="gst-plugins-good-plugins-smpte.object-hierarchy"></a><h2>Object Hierarchy</h2> 88<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 89 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 90 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 91 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 92 <span class="lineart">╰──</span> GstSMPTE 93</pre> 94</div> 95<div class="refsect1"> 96<a name="gst-plugins-good-plugins-smpte.description"></a><h2>Description</h2> 97<p>smpte can accept I420 video streams with the same width, height and 98framerate. The two incoming buffers are blended together using an effect 99specific alpha mask. </p> 100<p>The <span class="type">“depth”</span> property defines the presision in bits of the mask. A 101higher presision will create a mask with smoother gradients in order to avoid 102banding.</p> 103<div class="refsect2"> 104<a name="id-1.2.245.7.4"></a><h3>Sample pipelines</h3> 105<div class="informalexample"> 106 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 107 <tbody> 108 <tr> 109 <td class="listing_lines" align="right"><pre>1</pre></td> 110 <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 pattern<span class="gtkdoc opt">=</span><span class="number">1</span> <span class="gtkdoc opt">!</span> smpte name<span class="gtkdoc opt">=</span>s border<span class="gtkdoc opt">=</span><span class="number">20000</span> type<span class="gtkdoc opt">=</span><span class="number">234</span> duration<span class="gtkdoc opt">=</span><span class="number">2000000000</span> <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> ximagesink videotestsrc <span class="gtkdoc opt">!</span> s<span class="gtkdoc opt">.</span></pre></td> 111 </tr> 112 </tbody> 113 </table> 114</div> 115 A pipeline to demonstrate the smpte transition. 116It shows a pinwheel transition a from a snow videotestsrc to an smpte 117pattern videotestsrc. The transition will take 2 seconds to complete. The 118edges of the transition are smoothed with a 20000 big border. 119</div> 120<div class="refsynopsisdiv"> 121<h2>Synopsis</h2> 122<div class="refsect2"> 123<a name="id-1.2.245.7.5.1"></a><h3>Element Information</h3> 124<div class="variablelist"><table border="0" class="variablelist"> 125<colgroup> 126<col align="left" valign="top"> 127<col> 128</colgroup> 129<tbody> 130<tr> 131<td><p><span class="term">plugin</span></p></td> 132<td> 133 <a class="link" href="gst-plugins-good-plugins-plugin-smpte.html#plugin-smpte">smpte</a> 134 </td> 135</tr> 136<tr> 137<td><p><span class="term">author</span></p></td> 138<td>Wim Taymans <wim.taymans@chello.be></td> 139</tr> 140<tr> 141<td><p><span class="term">class</span></p></td> 142<td>Filter/Editor/Video</td> 143</tr> 144</tbody> 145</table></div> 146</div> 147<hr> 148<div class="refsect2"> 149<a name="id-1.2.245.7.5.2"></a><h3>Element Pads</h3> 150<div class="variablelist"><table border="0" class="variablelist"> 151<colgroup> 152<col align="left" valign="top"> 153<col> 154</colgroup> 155<tbody> 156<tr> 157<td><p><span class="term">name</span></p></td> 158<td>sink1</td> 159</tr> 160<tr> 161<td><p><span class="term">direction</span></p></td> 162<td>sink</td> 163</tr> 164<tr> 165<td><p><span class="term">presence</span></p></td> 166<td>always</td> 167</tr> 168<tr> 169<td><p><span class="term">details</span></p></td> 170<td>video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 171</tr> 172</tbody> 173</table></div> 174<div class="variablelist"><table border="0" class="variablelist"> 175<colgroup> 176<col align="left" valign="top"> 177<col> 178</colgroup> 179<tbody> 180<tr> 181<td><p><span class="term">name</span></p></td> 182<td>sink2</td> 183</tr> 184<tr> 185<td><p><span class="term">direction</span></p></td> 186<td>sink</td> 187</tr> 188<tr> 189<td><p><span class="term">presence</span></p></td> 190<td>always</td> 191</tr> 192<tr> 193<td><p><span class="term">details</span></p></td> 194<td>video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 195</tr> 196</tbody> 197</table></div> 198<div class="variablelist"><table border="0" class="variablelist"> 199<colgroup> 200<col align="left" valign="top"> 201<col> 202</colgroup> 203<tbody> 204<tr> 205<td><p><span class="term">name</span></p></td> 206<td>src</td> 207</tr> 208<tr> 209<td><p><span class="term">direction</span></p></td> 210<td>source</td> 211</tr> 212<tr> 213<td><p><span class="term">presence</span></p></td> 214<td>always</td> 215</tr> 216<tr> 217<td><p><span class="term">details</span></p></td> 218<td>video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 219</tr> 220</tbody> 221</table></div> 222</div> 223</div> 224</div> 225<div class="refsect1"> 226<a name="gst-plugins-good-plugins-smpte.functions_details"></a><h2>Functions</h2> 227<p></p> 228</div> 229<div class="refsect1"> 230<a name="gst-plugins-good-plugins-smpte.other_details"></a><h2>Types and Values</h2> 231<div class="refsect2"> 232<a name="GstSMPTE-struct"></a><h3>struct GstSMPTE</h3> 233<pre class="programlisting">struct GstSMPTE;</pre> 234</div> 235</div> 236<div class="refsect1"> 237<a name="gst-plugins-good-plugins-smpte.property-details"></a><h2>Property Details</h2> 238<div class="refsect2"> 239<a name="GstSMPTE--border"></a><h3>The <code class="literal">“border”</code> property</h3> 240<pre class="programlisting"> “border” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 241<p>The border width of the transition.</p> 242<p>Flags: Read / Write</p> 243<p>Allowed values: >= 0</p> 244<p>Default value: 0</p> 245</div> 246<hr> 247<div class="refsect2"> 248<a name="GstSMPTE--depth"></a><h3>The <code class="literal">“depth”</code> property</h3> 249<pre class="programlisting"> “depth” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 250<p>Depth of the mask in bits.</p> 251<p>Flags: Read / Write</p> 252<p>Allowed values: [1,24]</p> 253<p>Default value: 16</p> 254</div> 255<hr> 256<div class="refsect2"> 257<a name="GstSMPTE--type"></a><h3>The <code class="literal">“type”</code> property</h3> 258<pre class="programlisting"> “type” <span class="type">GstSMPTETransitionType</span></pre> 259<p>The type of transition to use.</p> 260<p>Flags: Read / Write</p> 261<p>Default value: A bar moves from left to right</p> 262</div> 263<hr> 264<div class="refsect2"> 265<a name="GstSMPTE--duration"></a><h3>The <code class="literal">“duration”</code> property</h3> 266<pre class="programlisting"> “duration” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a></pre> 267<p>Duration of the transition effect in nanoseconds.</p> 268<p>Flags: Read / Write</p> 269<p>Default value: 1000000000</p> 270</div> 271<hr> 272<div class="refsect2"> 273<a name="GstSMPTE--invert"></a><h3>The <code class="literal">“invert”</code> property</h3> 274<pre class="programlisting"> “invert” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> 275<p>Invert transition mask.</p> 276<p>Flags: Read / Write</p> 277<p>Default value: FALSE</p> 278</div> 279</div> 280</div> 281<div class="footer"> 282<hr>Generated by GTK-Doc V1.28</div> 283</body> 284</html>
