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docs/plugins/html/gst-plugins-bad-plugins-zbar.html
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>zbar</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.1">
 
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
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<link rel="home" href="index.html" title="GStreamer Bad Plugins 0.10 Plugins Reference Manual">
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<link rel="up" href="ch01.html" title="gst-plugins-bad Elements">
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<link rel="prev" href="gst-plugins-bad-plugins-wildmidi.html" title="wildmidi">
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<link rel="next" href="ch02.html" title="gst-plugins-bad Plugins">
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<meta name="generator" content="GTK-Doc V1.11 (XML mode)">
 
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<meta name="generator" content="GTK-Doc V1.13 (XML mode)">
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<link rel="stylesheet" href="style.css" type="text/css">
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<link rel="chapter" href="ch01.html" title="gst-plugins-bad Elements">
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<link rel="chapter" href="ch02.html" title="gst-plugins-bad Plugins">
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</tr>
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<tr><td colspan="5" class="shortcuts">
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<a href="#gst-plugins-bad-plugins-zbar.synopsis" class="shortcut">Top</a>
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                 | 
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                <a href="#gst-plugins-bad-plugins-zbar.description" class="shortcut">Description</a>
 
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                   | 
 
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                  <a href="#gst-plugins-bad-plugins-zbar.description" class="shortcut">Description</a>
 
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                   | 
 
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                  <a href="#gst-plugins-bad-plugins-zbar.properties" class="shortcut">Properties</a>
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</td></tr>
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</table>
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<div class="refentry" title="zbar">
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</tr></table></div>
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<div class="refsynopsisdiv" title="Synopsis">
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<a name="gst-plugins-bad-plugins-zbar.synopsis"></a><h2>Synopsis</h2>
 
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<pre class="synopsis">                    <a class="link" href="gst-plugins-bad-plugins-zbar.html#GstZBar" title="GstZBar">GstZBar</a>;
 
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</pre>
 
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</div>
 
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<div class="refsect1" title="Properties">
 
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<a name="gst-plugins-bad-plugins-zbar.properties"></a><h2>Properties</h2>
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<pre class="synopsis">
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                    <a class="link" href="gst-plugins-bad-plugins-zbar.html#GstZBar" title="GstZBar">GstZBar</a>;
 
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  "<a class="link" href="gst-plugins-bad-plugins-zbar.html#GstZBar--message" title='The "message" property'>message</a>"                  <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>              : Read / Write
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</pre>
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</div>
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<div class="refsect1" title="Description">
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<a name="gst-plugins-bad-plugins-zbar.description"></a><h2>Description</h2>
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<p>
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Detect bar codes in the video streams and send them as element messages to
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the <a
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href="../gstreamer-0.10/GstBus.html"
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><span class="type">GstBus</span></a> if .<span class="type">"message"</span> property is <a
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href="../glib/glib-Standard-Macros.html#TRUE--CAPS"
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><code class="literal">TRUE</code></a>.
 
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the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstBus.html"><span class="type">GstBus</span></a> if .<a class="link" href="gst-plugins-bad-plugins-zbar.html#GstZBar--message" title='The "message" property'><span class="type">"message"</span></a> property is <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>.
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</p>
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<p>
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The element generate messages named
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" type="disc">
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<li class="listitem"><p>
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  <a
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href="../gstreamer-0.10/GstClock.html#GstClockTime"
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><span class="type">GstClockTime</span></a>
 
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  <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
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  <code class="classname">"timestamp"</code>:
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  the timestamp of the buffer that triggered the message.
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  </p></li>
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<p>
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</p>
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<div class="refsect2" title="Example launch lines">
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<a name="id3117130"></a><h3>Example launch lines</h3>
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<div class="informalexample"><pre class="programlisting">
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gst-launch -m v4l2src ! ffmpegcolorspace ! zbar ! ffmpegcolorspace ! xvimagesink
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</pre></div> This pipeline will detect barcodes and send them as messages.
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<div class="informalexample"><pre class="programlisting">
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gst-launch -m v4l2src ! tee name=t ! queue ! ffmpegcolorspace ! zbar ! fakesink t. ! queue ! xvimagesink
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</pre></div> Same as above, but running the filter on a branch to keep the display in color
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</div>
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<div class="refsynopsisdiv" title="Synopsis">
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<h2>Synopsis</h2>
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<div class="refsect2" title="Element Information">
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<a name="id3118106"></a><h3>Element Information</h3>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term">plugin</span></p></td>
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<td>
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            <a class="link" href="gst-plugins-bad-plugins-plugin-zbar.html#plugin-zbar">zbar</a>
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          </td>
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</tr>
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<tr>
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<td><p><span class="term">author</span></p></td>
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<td>Stefan Kost &lt;ensonic@users.sf.net&gt;</td>
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</tr>
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<tr>
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<td><p><span class="term">class</span></p></td>
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<td>Filter/Analyzer/Video</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2" title="Element Pads">
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<a name="id3178615"></a><h3>Element Pads</h3>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term">name</span></p></td>
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<td>src</td>
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</tr>
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<tr>
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<td><p><span class="term">direction</span></p></td>
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<td>source</td>
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</tr>
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<tr>
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<td><p><span class="term">presence</span></p></td>
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<td>always</td>
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</tr>
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<tr>
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<td><p><span class="term">details</span></p></td>
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<td>video/x-raw-yuv, format=(fourcc){ Y800 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
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</tr>
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</tbody>
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</table></div>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term">name</span></p></td>
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<td>sink</td>
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</tr>
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<tr>
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<td><p><span class="term">direction</span></p></td>
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<td>sink</td>
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</tr>
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<tr>
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<td><p><span class="term">presence</span></p></td>
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<td>always</td>
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</tr>
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<tr>
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<td><p><span class="term">details</span></p></td>
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<td>video/x-raw-yuv, format=(fourcc){ Y800 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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</div>
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<p>
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</p>
 
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<a name="id434496"></a><h3>Example launch lines</h3>
 
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<div class="informalexample">
 
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  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
 
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    <tbody>
 
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      <tr>
 
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        <td class="listing_lines" align="right"><pre>1</pre></td>
 
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        <td class="listing_code"><pre class="programlisting">gst<span class="symbol">-</span>launch <span class="symbol">-</span>m v4l2src <span class="symbol">!</span> ffmpegcolorspace <span class="symbol">!</span> zbar <span class="symbol">!</span> ffmpegcolorspace <span class="symbol">!</span> xvimagesink</pre></td>
 
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      </tr>
 
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    </tbody>
 
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  </table>
 
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</div>
 
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 This pipeline will detect barcodes and send them as messages.
 
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<div class="informalexample">
 
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  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
 
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    <tbody>
 
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      <tr>
 
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        <td class="listing_lines" align="right"><pre>1</pre></td>
 
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        <td class="listing_code"><pre class="programlisting">gst<span class="symbol">-</span>launch <span class="symbol">-</span>m v4l2src <span class="symbol">!</span> tee name<span class="symbol">=</span>t <span class="symbol">!</span> queue <span class="symbol">!</span> ffmpegcolorspace <span class="symbol">!</span> zbar <span class="symbol">!</span> fakesink t<span class="symbol">. !</span> queue <span class="symbol">!</span> xvimagesink</pre></td>
 
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      </tr>
 
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    </tbody>
 
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  </table>
 
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</div>
 
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 Same as above, but running the filter on a branch to keep the display in color
 
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</div>
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</div>
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<div class="refsect1" title="Details">
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<a name="gst-plugins-bad-plugins-zbar.details"></a><h2>Details</h2>
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<div class="refsect2" title="GstZBar">
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<a name="GstZBar"></a><h3>GstZBar</h3>
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<pre class="programlisting">typedef struct {
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  GstVideoFilter videofilter;
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  /* format */
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  gint width;
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  gint height;
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  /* properties */
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  gboolean message;
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  /* internals */
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  zbar_image_scanner_t *scanner;
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} GstZBar;
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</pre>
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<p>
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Opaque data structure.</p>
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<p>
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</p>
 
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</div>
 
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</div>
 
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<div class="refsect1" title="Property Details">
 
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<a name="gst-plugins-bad-plugins-zbar.property-details"></a><h2>Property Details</h2>
 
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<div class="refsect2" title='The "message" property'>
 
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<a name="GstZBar--message"></a><h3>The <code class="literal">"message"</code> property</h3>
 
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<pre class="programlisting">  "message"                  <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>              : Read / Write</pre>
 
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<p>Post a barcode message for each detected code.</p>
 
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<p>Default value: TRUE</p>
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</div>
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</div>
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</div>
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<div class="footer">
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<hr>
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          Generated by GTK-Doc V1.11</div>
 
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          Generated by GTK-Doc V1.13</div>
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</body>
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</html>
 
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</html>
 
 
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