docs/plugins/html/gst-plugins-good-plugins-gamma.html


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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<a href="#gst-plugins-good-plugins-gamma.synopsis" class="shortcut">Top</a>
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                  <a href="#gst-plugins-good-plugins-gamma.object-hierarchy" class="shortcut">Object Hierarchy</a>
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                  <a href="#gst-plugins-good-plugins-gamma.properties" class="shortcut">Properties</a>
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<div class="refentry">
<a name="gst-plugins-good-plugins-gamma"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-gamma.top_of_page"></a>gamma</span></h2>
<p>gamma — Adjusts gamma on a video stream</p>
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<div class="refsynopsisdiv">
<a name="gst-plugins-good-plugins-gamma.synopsis"></a><h2>Synopsis</h2>
<a name="GstGamma"></a><pre class="synopsis">struct              <a class="link" href="gst-plugins-good-plugins-gamma.html#GstGamma-struct" title="struct GstGamma">GstGamma</a>;
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-gamma.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
  <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
   +----<a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
         +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a>
               +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a>
                     +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstBaseTransform.html">GstBaseTransform</a>
                           +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstvideofilter.html#GstVideoFilter">GstVideoFilter</a>
                                 +----GstGamma
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-gamma.properties"></a><h2>Properties</h2>
<pre class="synopsis">
  "<a class="link" href="gst-plugins-good-plugins-gamma.html#GstGamma--gamma" title='The "gamma" property'>gamma</a>"                    <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a>               : Read / Write
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-gamma.description"></a><h2>Description</h2>
<p>
Performs gamma correction on a video stream.
</p>
<p>
</p>
<div class="refsect2">
<a name="idp65216832"></a><h3>Example launch line</h3>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
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        <td class="listing_lines" align="right"><pre>1</pre></td>
        <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> videotestsrc <span class="gtkdoc opt">!</span> gamma gamma<span class="gtkdoc opt">=</span><span class="number">2.0</span> <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> ximagesink</pre></td>
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 This pipeline will make the image "brighter".
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
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        <td class="listing_lines" align="right"><pre>1</pre></td>
        <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> videotestsrc <span class="gtkdoc opt">!</span> gamma gamma<span class="gtkdoc opt">=</span><span class="number">0.5</span> <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> ximagesink</pre></td>
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 This pipeline will make the image "darker".
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<p>
</p>
<p>
Last reviewed on 2010-04-18 (0.10.22)
</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="idp61313232"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
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<col align="left" valign="top">
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<td><p><span class="term">plugin</span></p></td>
<td>
            <a class="link" href="gst-plugins-good-plugins-plugin-videofilter.html#plugin-videofilter">videofilter</a>
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Arwed v. Merkatz &lt;v.merkatz@gmx.net</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Filter/Effect/Video</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="idp64906224"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
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<col align="left" valign="top">
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<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-raw, format=(string){ AYUV, ARGB, BGRA, ABGR, RGBA, Y444, xRGB, RGBx, xBGR, BGRx, RGB, BGR, Y42B, NV12, NV21, YUY2, UYVY, YVYU, I420, YV12, IYUV, Y41B }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
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<div class="variablelist"><table border="0" class="variablelist">
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<col align="left" valign="top">
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<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-raw, format=(string){ AYUV, ARGB, BGRA, ABGR, RGBA, Y444, xRGB, RGBx, xBGR, BGRx, RGB, BGR, Y42B, NV12, NV21, YUY2, UYVY, YVYU, I420, YV12, IYUV, Y41B }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-gamma.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstGamma-struct"></a><h3>struct GstGamma</h3>
<pre class="programlisting">struct GstGamma;</pre>
<p>
Opaque data structure.
</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-gamma.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstGamma--gamma"></a><h3>The <code class="literal">"gamma"</code> property</h3>
<pre class="programlisting">  "gamma"                    <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a>               : Read / Write</pre>
<p>gamma.</p>
<p>Allowed values: [0.01,10]</p>
<p>Default value: 1</p>
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