docs/plugins/html/gst-plugins-base-plugins-videotestsrc.html

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  24 <a href="#gst-plugins-base-plugins-videotestsrc.synopsis" class="shortcut">Top</a>
  25                    |
  26                   <a href="#gst-plugins-base-plugins-videotestsrc.description" class="shortcut">Description</a>
  27                    |
  28                   <a href="#gst-plugins-base-plugins-videotestsrc.object-hierarchy" class="shortcut">Object Hierarchy</a>
  29                    |
  30                   <a href="#gst-plugins-base-plugins-videotestsrc.properties" class="shortcut">Properties</a>
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  33 <div class="refentry">
  34 <a name="gst-plugins-base-plugins-videotestsrc"></a><div class="titlepage"></div>
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  37 <h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-videotestsrc.top_of_page"></a>videotestsrc</span></h2>
  38 <p>videotestsrc — Creates a test video stream</p>
  39 </td>
  40 <td valign="top" align="right"></td>
  41 </tr></table></div>
  42 <div class="refsynopsisdiv">
  43 <a name="gst-plugins-base-plugins-videotestsrc.synopsis"></a><h2>Synopsis</h2>
  44 <a name="GstVideoTestSrc"></a><pre class="synopsis">struct              <a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc-struct" title="struct GstVideoTestSrc">GstVideoTestSrc</a>;
  45 enum                <a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrcPattern" title="enum GstVideoTestSrcPattern">GstVideoTestSrcPattern</a>;
  46 enum                <a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrcColorSpec" title="enum GstVideoTestSrcColorSpec">GstVideoTestSrcColorSpec</a>;
  47 </pre>
  48 </div>
  49 <div class="refsect1">
  50 <a name="gst-plugins-base-plugins-videotestsrc.object-hierarchy"></a><h2>Object Hierarchy</h2>
  51 <pre class="synopsis">
  52   <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
  53    +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a>
  54          +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a>
  55                +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstBaseSrc.html">GstBaseSrc</a>
  56                      +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstPushSrc.html">GstPushSrc</a>
  57                            +----GstVideoTestSrc
  58 </pre>
  59 </div>
  60 <div class="refsect1">
  61 <a name="gst-plugins-base-plugins-videotestsrc.properties"></a><h2>Properties</h2>
  62 <pre class="synopsis">
  63   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--pattern" title='The "pattern" property'>pattern</a>"                  <a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrcPattern" title="enum GstVideoTestSrcPattern"><span class="type">GstVideoTestSrcPattern</span></a>  : Read / Write
  64   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--timestamp-offset" title='The "timestamp-offset" property'>timestamp-offset</a>"         <span class="type">gint64</span>                : Read / Write
  65   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--is-live" title='The "is-live" property'>is-live</a>"                  <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>              : Read / Write
  66   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--peer-alloc" title='The "peer-alloc" property'>peer-alloc</a>"               <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>              : Read / Write
  67   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--colorspec" title='The "colorspec" property'>colorspec</a>"                <a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrcColorSpec" title="enum GstVideoTestSrcColorSpec"><span class="type">GstVideoTestSrcColorSpec</span></a>  : Read / Write
  68   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--k0" title='The "k0" property'>k0</a>"                       <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  69   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--kt" title='The "kt" property'>kt</a>"                       <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  70   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--kt2" title='The "kt2" property'>kt2</a>"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  71   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--kx" title='The "kx" property'>kx</a>"                       <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  72   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--kx2" title='The "kx2" property'>kx2</a>"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  73   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--kxt" title='The "kxt" property'>kxt</a>"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  74   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--kxy" title='The "kxy" property'>kxy</a>"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  75   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--ky" title='The "ky" property'>ky</a>"                       <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  76   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--ky2" title='The "ky2" property'>ky2</a>"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  77   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--kyt" title='The "kyt" property'>kyt</a>"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  78   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--xoffset" title='The "xoffset" property'>xoffset</a>"                  <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  79   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--yoffset" title='The "yoffset" property'>yoffset</a>"                  <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  80   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--background-color" title='The "background-color" property'>background-color</a>"         <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a>                 : Read / Write
  81   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--foreground-color" title='The "foreground-color" property'>foreground-color</a>"         <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a>                 : Read / Write
  82   "<a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrc--horizontal-speed" title='The "horizontal-speed" property'>horizontal-speed</a>"         <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  83 </pre>
  84 </div>
  85 <div class="refsect1">
  86 <a name="gst-plugins-base-plugins-videotestsrc.description"></a><h2>Description</h2>
  87 <p>
  88 The videotestsrc element is used to produce test video data in a wide variety
  89 of formats. The video test data produced can be controlled with the "pattern"
  90 property.
  91 </p>
  92 <p>
  93 </p>
  94 <div class="refsect2">
  95 <a name="idp15476256"></a><h3>Example launch line</h3>
  96 <div class="informalexample">
  97   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
  98     <tbody>
  99       <tr>
 100         <td class="listing_lines" align="right"><pre>1</pre></td>
 101         <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch <span class="gtkdoc opt">-</span>v videotestsrc pattern<span class="gtkdoc opt">=</span>snow <span class="gtkdoc opt">!</span> ximagesink</pre></td>
 102       </tr>
 103     </tbody>
 104   </table>
 105 </div>
 106  Shows random noise in an X window.
 107 </div>
 108 <p>
 109 </p>
 110 <div class="refsynopsisdiv">
 111 <h2>Synopsis</h2>
 112 <div class="refsect2">
 113 <a name="idp15473888"></a><h3>Element Information</h3>
 114 <div class="variablelist"><table border="0">
 115 <col align="left" valign="top">
 116 <tbody>
 117 <tr>
 118 <td><p><span class="term">plugin</span></p></td>
 119 <td>
 120             <a class="link" href="gst-plugins-base-plugins-plugin-videotestsrc.html#plugin-videotestsrc">videotestsrc</a>
 121           </td>
 122 </tr>
 123 <tr>
 124 <td><p><span class="term">author</span></p></td>
 125 <td>David A. Schleef &lt;ds@schleef.org&gt;</td>
 126 </tr>
 127 <tr>
 128 <td><p><span class="term">class</span></p></td>
 129 <td>Source/Video</td>
 130 </tr>
 131 </tbody>
 132 </table></div>
 133 </div>
 134 <hr>
 135 <div class="refsect2">
 136 <a name="idp15465088"></a><h3>Element Pads</h3>
 137 <div class="variablelist"><table border="0">
 138 <col align="left" valign="top">
 139 <tbody>
 140 <tr>
 141 <td><p><span class="term">name</span></p></td>
 142 <td>src</td>
 143 </tr>
 144 <tr>
 145 <td><p><span class="term">direction</span></p></td>
 146 <td>source</td>
 147 </tr>
 148 <tr>
 149 <td><p><span class="term">presence</span></p></td>
 150 <td>always</td>
 151 </tr>
 152 <tr>
 153 <td><p><span class="term">details</span></p></td>
 154 <td>video/x-raw-yuv, format=(fourcc)YUY2, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 155 </tr>
 156 <tr>
 157 <td><p><span class="term"></span></p></td>
 158 <td> video/x-raw-yuv, format=(fourcc)UYVY, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 159 </tr>
 160 <tr>
 161 <td><p><span class="term"></span></p></td>
 162 <td> video/x-raw-yuv, format=(fourcc)YVYU, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 163 </tr>
 164 <tr>
 165 <td><p><span class="term"></span></p></td>
 166 <td> video/x-raw-yuv, format=(fourcc)v308, color-matrix=(string){ sdtv, hdtv }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 167 </tr>
 168 <tr>
 169 <td><p><span class="term"></span></p></td>
 170 <td> video/x-raw-yuv, format=(fourcc)AYUV, color-matrix=(string){ sdtv, hdtv }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 171 </tr>
 172 <tr>
 173 <td><p><span class="term"></span></p></td>
 174 <td> video/x-raw-yuv, format=(fourcc)v210, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 175 </tr>
 176 <tr>
 177 <td><p><span class="term"></span></p></td>
 178 <td> video/x-raw-yuv, format=(fourcc)v216, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 179 </tr>
 180 <tr>
 181 <td><p><span class="term"></span></p></td>
 182 <td> video/x-raw-yuv, format=(fourcc)UYVP, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 183 </tr>
 184 <tr>
 185 <td><p><span class="term"></span></p></td>
 186 <td> video/x-raw-yuv, format=(fourcc)AY64, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 187 </tr>
 188 <tr>
 189 <td><p><span class="term"></span></p></td>
 190 <td> video/x-raw-yuv, format=(fourcc)YVU9, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 191 </tr>
 192 <tr>
 193 <td><p><span class="term"></span></p></td>
 194 <td> video/x-raw-yuv, format=(fourcc)YUV9, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 195 </tr>
 196 <tr>
 197 <td><p><span class="term"></span></p></td>
 198 <td> video/x-raw-yuv, format=(fourcc)YV12, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 199 </tr>
 200 <tr>
 201 <td><p><span class="term"></span></p></td>
 202 <td> video/x-raw-yuv, format=(fourcc)I420, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 203 </tr>
 204 <tr>
 205 <td><p><span class="term"></span></p></td>
 206 <td> video/x-raw-yuv, format=(fourcc)NV12, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 207 </tr>
 208 <tr>
 209 <td><p><span class="term"></span></p></td>
 210 <td> video/x-raw-yuv, format=(fourcc)NV21, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 211 </tr>
 212 <tr>
 213 <td><p><span class="term"></span></p></td>
 214 <td> video/x-raw-yuv, format=(fourcc)Y41B, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 215 </tr>
 216 <tr>
 217 <td><p><span class="term"></span></p></td>
 218 <td> video/x-raw-yuv, format=(fourcc)Y42B, color-matrix=(string){ sdtv, hdtv }, chroma-site=(string){ mpeg2, jpeg }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 219 </tr>
 220 <tr>
 221 <td><p><span class="term"></span></p></td>
 222 <td> video/x-raw-yuv, format=(fourcc)Y444, color-matrix=(string){ sdtv, hdtv }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 223 </tr>
 224 <tr>
 225 <td><p><span class="term"></span></p></td>
 226 <td> video/x-raw-yuv, format=(fourcc)Y800, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 227 </tr>
 228 <tr>
 229 <td><p><span class="term"></span></p></td>
 230 <td> video/x-raw-gray, bpp=(int)8, depth=(int)8, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 231 </tr>
 232 <tr>
 233 <td><p><span class="term"></span></p></td>
 234 <td> video/x-raw-gray, bpp=(int)16, depth=(int)16, endianness=(int)1234, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 235 </tr>
 236 <tr>
 237 <td><p><span class="term"></span></p></td>
 238 <td> video/x-raw-rgb, bpp=(int)32, endianness=(int)4321, depth=(int)24, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 239 </tr>
 240 <tr>
 241 <td><p><span class="term"></span></p></td>
 242 <td> video/x-raw-rgb, bpp=(int)32, endianness=(int)4321, depth=(int)24, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 243 </tr>
 244 <tr>
 245 <td><p><span class="term"></span></p></td>
 246 <td> video/x-raw-rgb, bpp=(int)32, endianness=(int)4321, depth=(int)24, red_mask=(int)-16777216, green_mask=(int)16711680, blue_mask=(int)65280, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 247 </tr>
 248 <tr>
 249 <td><p><span class="term"></span></p></td>
 250 <td> video/x-raw-rgb, bpp=(int)32, endianness=(int)4321, depth=(int)24, red_mask=(int)65280, green_mask=(int)16711680, blue_mask=(int)-16777216, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 251 </tr>
 252 <tr>
 253 <td><p><span class="term"></span></p></td>
 254 <td> video/x-raw-rgb, bpp=(int)32, endianness=(int)4321, depth=(int)32, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, alpha_mask=(int)-16777216, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 255 </tr>
 256 <tr>
 257 <td><p><span class="term"></span></p></td>
 258 <td> video/x-raw-rgb, bpp=(int)32, endianness=(int)4321, depth=(int)32, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, alpha_mask=(int)-16777216, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 259 </tr>
 260 <tr>
 261 <td><p><span class="term"></span></p></td>
 262 <td> video/x-raw-rgb, bpp=(int)32, endianness=(int)4321, depth=(int)32, red_mask=(int)-16777216, green_mask=(int)16711680, blue_mask=(int)65280, alpha_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 263 </tr>
 264 <tr>
 265 <td><p><span class="term"></span></p></td>
 266 <td> video/x-raw-rgb, bpp=(int)32, endianness=(int)4321, depth=(int)32, red_mask=(int)65280, green_mask=(int)16711680, blue_mask=(int)-16777216, alpha_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 267 </tr>
 268 <tr>
 269 <td><p><span class="term"></span></p></td>
 270 <td> video/x-raw-rgb, bpp=(int)24, endianness=(int)4321, depth=(int)24, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 271 </tr>
 272 <tr>
 273 <td><p><span class="term"></span></p></td>
 274 <td> video/x-raw-rgb, bpp=(int)24, endianness=(int)4321, depth=(int)24, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 275 </tr>
 276 <tr>
 277 <td><p><span class="term"></span></p></td>
 278 <td> video/x-raw-rgb, bpp=(int)16, endianness=(int)1234, depth=(int)16, red_mask=(int)63488, green_mask=(int)2016, blue_mask=(int)31, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 279 </tr>
 280 <tr>
 281 <td><p><span class="term"></span></p></td>
 282 <td> video/x-raw-rgb, bpp=(int)16, endianness=(int)1234, depth=(int)15, red_mask=(int)31744, green_mask=(int)992, blue_mask=(int)31, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 283 </tr>
 284 <tr>
 285 <td><p><span class="term"></span></p></td>
 286 <td> video/x-raw-rgb, bpp=(int)64, endianness=(int)4321, depth=(int)64, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 287 </tr>
 288 <tr>
 289 <td><p><span class="term"></span></p></td>
 290 <td> video/x-raw-bayer, format=(string)bggr, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 291 </tr>
 292 <tr>
 293 <td><p><span class="term"></span></p></td>
 294 <td> video/x-raw-bayer, format=(string)rggb, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 295 </tr>
 296 <tr>
 297 <td><p><span class="term"></span></p></td>
 298 <td> video/x-raw-bayer, format=(string)grbg, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 299 </tr>
 300 <tr>
 301 <td><p><span class="term"></span></p></td>
 302 <td> video/x-raw-bayer, format=(string)gbrg, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
 303 </tr>
 304 </tbody>
 305 </table></div>
 306 </div>
 307 </div>
 308 <p>
 309 </p>
 310 </div>
 311 <div class="refsect1">
 312 <a name="gst-plugins-base-plugins-videotestsrc.details"></a><h2>Details</h2>
 313 <div class="refsect2">
 314 <a name="GstVideoTestSrc-struct"></a><h3>struct GstVideoTestSrc</h3>
 315 <pre class="programlisting">struct GstVideoTestSrc;</pre>
 316 <p>
 317 Opaque data structure.
 318 </p>
 319 </div>
 320 <hr>
 321 <div class="refsect2">
 322 <a name="GstVideoTestSrcPattern"></a><h3>enum GstVideoTestSrcPattern</h3>
 323 <pre class="programlisting">typedef enum {
 324   GST_VIDEO_TEST_SRC_SMPTE,
 325   GST_VIDEO_TEST_SRC_SNOW,
 326   GST_VIDEO_TEST_SRC_BLACK,
 327   GST_VIDEO_TEST_SRC_WHITE,
 328   GST_VIDEO_TEST_SRC_RED,
 329   GST_VIDEO_TEST_SRC_GREEN,
 330   GST_VIDEO_TEST_SRC_BLUE,
 331   GST_VIDEO_TEST_SRC_CHECKERS1,
 332   GST_VIDEO_TEST_SRC_CHECKERS2,
 333   GST_VIDEO_TEST_SRC_CHECKERS4,
 334   GST_VIDEO_TEST_SRC_CHECKERS8,
 335   GST_VIDEO_TEST_SRC_CIRCULAR,
 336   GST_VIDEO_TEST_SRC_BLINK,
 337   GST_VIDEO_TEST_SRC_SMPTE75,
 338   GST_VIDEO_TEST_SRC_ZONE_PLATE,
 339   GST_VIDEO_TEST_SRC_GAMUT,
 340   GST_VIDEO_TEST_SRC_CHROMA_ZONE_PLATE,
 341   GST_VIDEO_TEST_SRC_SOLID,
 342   GST_VIDEO_TEST_SRC_BALL,
 343   GST_VIDEO_TEST_SRC_SMPTE100,
 344   GST_VIDEO_TEST_SRC_BAR
 345 } GstVideoTestSrcPattern;
 346 </pre>
 347 <p>
 348 The test pattern to produce.
 349 </p>
 350 <p>
 351 The Gamut pattern creates a checkerboard pattern of colors at the
 352 edge of the YCbCr gamut and nearby colors that are out of gamut.
 353 The pattern is divided into 4 regions: black, white, red, and blue.
 354 After conversion to RGB, the out-of-gamut colors should be converted
 355 to the same value as their in-gamut neighbors.  If the checkerboard
 356 pattern is still visible after conversion, this indicates a faulty
 357 conversion.  Image manipulation, such as adjusting contrast or
 358 brightness, can also cause the pattern to be visible.
 359 </p>
 360 <p>
 361 The Zone Plate pattern is based on BBC R&amp;D Report 1978/23, and can
 362 be used to test spatial frequency response of a system.  This
 363 pattern generator is controlled by the xoffset and yoffset parameters
 364 and also by all the parameters starting with 'k'.  The default
 365 parameters produce a grey pattern.  Try 'videotestsrc
 366 pattern=zone-plate kx2=20 ky2=20 kt=1' to produce something
 367 interesting.
 368 </p>
 369 <div class="variablelist"><table border="0">
 370 <col align="left" valign="top">
 371 <tbody>
 372 <tr>
 373 <td><p><a name="GST-VIDEO-TEST-SRC-SMPTE:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_SMPTE</code></span></p></td>
 374 <td>A standard SMPTE test pattern
 375 </td>
 376 </tr>
 377 <tr>
 378 <td><p><a name="GST-VIDEO-TEST-SRC-SNOW:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_SNOW</code></span></p></td>
 379 <td>Random noise
 380 </td>
 381 </tr>
 382 <tr>
 383 <td><p><a name="GST-VIDEO-TEST-SRC-BLACK:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_BLACK</code></span></p></td>
 384 <td>A black image
 385 </td>
 386 </tr>
 387 <tr>
 388 <td><p><a name="GST-VIDEO-TEST-SRC-WHITE:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_WHITE</code></span></p></td>
 389 <td>A white image
 390 </td>
 391 </tr>
 392 <tr>
 393 <td><p><a name="GST-VIDEO-TEST-SRC-RED:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_RED</code></span></p></td>
 394 <td>A red image
 395 </td>
 396 </tr>
 397 <tr>
 398 <td><p><a name="GST-VIDEO-TEST-SRC-GREEN:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_GREEN</code></span></p></td>
 399 <td>A green image
 400 </td>
 401 </tr>
 402 <tr>
 403 <td><p><a name="GST-VIDEO-TEST-SRC-BLUE:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_BLUE</code></span></p></td>
 404 <td>A blue image
 405 </td>
 406 </tr>
 407 <tr>
 408 <td><p><a name="GST-VIDEO-TEST-SRC-CHECKERS1:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_CHECKERS1</code></span></p></td>
 409 <td>Checkers pattern (1px)
 410 </td>
 411 </tr>
 412 <tr>
 413 <td><p><a name="GST-VIDEO-TEST-SRC-CHECKERS2:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_CHECKERS2</code></span></p></td>
 414 <td>Checkers pattern (2px)
 415 </td>
 416 </tr>
 417 <tr>
 418 <td><p><a name="GST-VIDEO-TEST-SRC-CHECKERS4:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_CHECKERS4</code></span></p></td>
 419 <td>Checkers pattern (4px)
 420 </td>
 421 </tr>
 422 <tr>
 423 <td><p><a name="GST-VIDEO-TEST-SRC-CHECKERS8:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_CHECKERS8</code></span></p></td>
 424 <td>Checkers pattern (8px)
 425 </td>
 426 </tr>
 427 <tr>
 428 <td><p><a name="GST-VIDEO-TEST-SRC-CIRCULAR:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_CIRCULAR</code></span></p></td>
 429 <td>Circular pattern
 430 </td>
 431 </tr>
 432 <tr>
 433 <td><p><a name="GST-VIDEO-TEST-SRC-BLINK:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_BLINK</code></span></p></td>
 434 <td>Alternate between black and white
 435 </td>
 436 </tr>
 437 <tr>
 438 <td><p><a name="GST-VIDEO-TEST-SRC-SMPTE75:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_SMPTE75</code></span></p></td>
 439 <td>SMPTE test pattern (75% color bars)
 440 </td>
 441 </tr>
 442 <tr>
 443 <td><p><a name="GST-VIDEO-TEST-SRC-ZONE-PLATE:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_ZONE_PLATE</code></span></p></td>
 444 <td>Zone plate
 445 </td>
 446 </tr>
 447 <tr>
 448 <td><p><a name="GST-VIDEO-TEST-SRC-GAMUT:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_GAMUT</code></span></p></td>
 449 <td>Gamut checking pattern
 450 </td>
 451 </tr>
 452 <tr>
 453 <td><p><a name="GST-VIDEO-TEST-SRC-CHROMA-ZONE-PLATE:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_CHROMA_ZONE_PLATE</code></span></p></td>
 454 <td>Chroma zone plate
 455 </td>
 456 </tr>
 457 <tr>
 458 <td><p><a name="GST-VIDEO-TEST-SRC-SOLID:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_SOLID</code></span></p></td>
 459 <td>
 460 </td>
 461 </tr>
 462 <tr>
 463 <td><p><a name="GST-VIDEO-TEST-SRC-BALL:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_BALL</code></span></p></td>
 464 <td>Moving ball
 465 </td>
 466 </tr>
 467 <tr>
 468 <td><p><a name="GST-VIDEO-TEST-SRC-SMPTE100:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_SMPTE100</code></span></p></td>
 469 <td>SMPTE test pattern (100% color bars)
 470 </td>
 471 </tr>
 472 <tr>
 473 <td><p><a name="GST-VIDEO-TEST-SRC-BAR:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_BAR</code></span></p></td>
 474 <td>Bar with foreground color
 475 </td>
 476 </tr>
 477 </tbody>
 478 </table></div>
 479 </div>
 480 <hr>
 481 <div class="refsect2">
 482 <a name="GstVideoTestSrcColorSpec"></a><h3>enum GstVideoTestSrcColorSpec</h3>
 483 <pre class="programlisting">typedef enum {
 484   GST_VIDEO_TEST_SRC_BT601,
 485   GST_VIDEO_TEST_SRC_BT709
 486 } GstVideoTestSrcColorSpec;
 487 </pre>
 488 <p>
 489 The color specification to use.
 490 </p>
 491 <div class="variablelist"><table border="0">
 492 <col align="left" valign="top">
 493 <tbody>
 494 <tr>
 495 <td><p><a name="GST-VIDEO-TEST-SRC-BT601:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_BT601</code></span></p></td>
 496 <td>ITU-R Rec. BT.601/BT.470 (SD)
 497 </td>
 498 </tr>
 499 <tr>
 500 <td><p><a name="GST-VIDEO-TEST-SRC-BT709:CAPS"></a><span class="term"><code class="literal">GST_VIDEO_TEST_SRC_BT709</code></span></p></td>
 501 <td>ITU-R Rec. BT.709 (HD)
 502 </td>
 503 </tr>
 504 </tbody>
 505 </table></div>
 506 </div>
 507 </div>
 508 <div class="refsect1">
 509 <a name="gst-plugins-base-plugins-videotestsrc.property-details"></a><h2>Property Details</h2>
 510 <div class="refsect2">
 511 <a name="GstVideoTestSrc--pattern"></a><h3>The <code class="literal">"pattern"</code> property</h3>
 512 <pre class="programlisting">  "pattern"                  <a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrcPattern" title="enum GstVideoTestSrcPattern"><span class="type">GstVideoTestSrcPattern</span></a>  : Read / Write</pre>
 513 <p>Type of test pattern to generate.</p>
 514 <p>Default value: SMPTE 100% color bars</p>
 515 </div>
 516 <hr>
 517 <div class="refsect2">
 518 <a name="GstVideoTestSrc--timestamp-offset"></a><h3>The <code class="literal">"timestamp-offset"</code> property</h3>
 519 <pre class="programlisting">  "timestamp-offset"         <span class="type">gint64</span>                : Read / Write</pre>
 520 <p>An offset added to timestamps set on buffers (in ns).</p>
 521 <p>Default value: 0</p>
 522 </div>
 523 <hr>
 524 <div class="refsect2">
 525 <a name="GstVideoTestSrc--is-live"></a><h3>The <code class="literal">"is-live"</code> property</h3>
 526 <pre class="programlisting">  "is-live"                  <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>              : Read / Write</pre>
 527 <p>Whether to act as a live source.</p>
 528 <p>Default value: FALSE</p>
 529 </div>
 530 <hr>
 531 <div class="refsect2">
 532 <a name="GstVideoTestSrc--peer-alloc"></a><h3>The <code class="literal">"peer-alloc"</code> property</h3>
 533 <pre class="programlisting">  "peer-alloc"               <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>              : Read / Write</pre>
 534 <p>Ask the peer to allocate an output buffer.</p>
 535 <p>Default value: TRUE</p>
 536 </div>
 537 <hr>
 538 <div class="refsect2">
 539 <a name="GstVideoTestSrc--colorspec"></a><h3>The <code class="literal">"colorspec"</code> property</h3>
 540 <pre class="programlisting">  "colorspec"                <a class="link" href="gst-plugins-base-plugins-videotestsrc.html#GstVideoTestSrcColorSpec" title="enum GstVideoTestSrcColorSpec"><span class="type">GstVideoTestSrcColorSpec</span></a>  : Read / Write</pre>
 541 <p>Generate video in the given color specification (Deprecated: use a caps filter with video/x-raw-yuv,color-matrix="sdtv" or "hdtv" instead).</p>
 542 <p>Default value: ITU-R Rec. BT.601</p>
 543 </div>
 544 <hr>
 545 <div class="refsect2">
 546 <a name="GstVideoTestSrc--k0"></a><h3>The <code class="literal">"k0"</code> property</h3>
 547 <pre class="programlisting">  "k0"                       <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 548 <p>Zoneplate zero order phase, for generating plain fields or phase offsets.</p>
 549 <p>Default value: 0</p>
 550 </div>
 551 <hr>
 552 <div class="refsect2">
 553 <a name="GstVideoTestSrc--kt"></a><h3>The <code class="literal">"kt"</code> property</h3>
 554 <pre class="programlisting">  "kt"                       <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 555 <p>Zoneplate 1st order t phase, for generating phase rotation as a function of time.</p>
 556 <p>Default value: 0</p>
 557 </div>
 558 <hr>
 559 <div class="refsect2">
 560 <a name="GstVideoTestSrc--kt2"></a><h3>The <code class="literal">"kt2"</code> property</h3>
 561 <pre class="programlisting">  "kt2"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 562 <p>Zoneplate 2nd order t phase, t*t/256 cycles per picture.</p>
 563 <p>Default value: 0</p>
 564 </div>
 565 <hr>
 566 <div class="refsect2">
 567 <a name="GstVideoTestSrc--kx"></a><h3>The <code class="literal">"kx"</code> property</h3>
 568 <pre class="programlisting">  "kx"                       <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 569 <p>Zoneplate 1st order x phase, for generating constant horizontal frequencies.</p>
 570 <p>Default value: 0</p>
 571 </div>
 572 <hr>
 573 <div class="refsect2">
 574 <a name="GstVideoTestSrc--kx2"></a><h3>The <code class="literal">"kx2"</code> property</h3>
 575 <pre class="programlisting">  "kx2"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 576 <p>Zoneplate 2nd order x phase, normalised to kx2/256 cycles per horizontal pixel at width/2 from origin.</p>
 577 <p>Default value: 0</p>
 578 </div>
 579 <hr>
 580 <div class="refsect2">
 581 <a name="GstVideoTestSrc--kxt"></a><h3>The <code class="literal">"kxt"</code> property</h3>
 582 <pre class="programlisting">  "kxt"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 583 <p>Zoneplate x*t product phase, normalised to kxy/256 cycles per vertical pixel at width/2 from origin.</p>
 584 <p>Default value: 0</p>
 585 </div>
 586 <hr>
 587 <div class="refsect2">
 588 <a name="GstVideoTestSrc--kxy"></a><h3>The <code class="literal">"kxy"</code> property</h3>
 589 <pre class="programlisting">  "kxy"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 590 <p>Zoneplate x*y product phase.</p>
 591 <p>Default value: 0</p>
 592 </div>
 593 <hr>
 594 <div class="refsect2">
 595 <a name="GstVideoTestSrc--ky"></a><h3>The <code class="literal">"ky"</code> property</h3>
 596 <pre class="programlisting">  "ky"                       <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 597 <p>Zoneplate 1st order y phase, for generating contant vertical frequencies.</p>
 598 <p>Default value: 0</p>
 599 </div>
 600 <hr>
 601 <div class="refsect2">
 602 <a name="GstVideoTestSrc--ky2"></a><h3>The <code class="literal">"ky2"</code> property</h3>
 603 <pre class="programlisting">  "ky2"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 604 <p>Zoneplate 2nd order y phase, normailsed to ky2/256 cycles per vertical pixel at height/2 from origin.</p>
 605 <p>Default value: 0</p>
 606 </div>
 607 <hr>
 608 <div class="refsect2">
 609 <a name="GstVideoTestSrc--kyt"></a><h3>The <code class="literal">"kyt"</code> property</h3>
 610 <pre class="programlisting">  "kyt"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 611 <p>Zoneplate y*t product phase.</p>
 612 <p>Default value: 0</p>
 613 </div>
 614 <hr>
 615 <div class="refsect2">
 616 <a name="GstVideoTestSrc--xoffset"></a><h3>The <code class="literal">"xoffset"</code> property</h3>
 617 <pre class="programlisting">  "xoffset"                  <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 618 <p>Zoneplate 2nd order products x offset.</p>
 619 <p>Default value: 0</p>
 620 </div>
 621 <hr>
 622 <div class="refsect2">
 623 <a name="GstVideoTestSrc--yoffset"></a><h3>The <code class="literal">"yoffset"</code> property</h3>
 624 <pre class="programlisting">  "yoffset"                  <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 625 <p>Zoneplate 2nd order products y offset.</p>
 626 <p>Default value: 0</p>
 627 </div>
 628 <hr>
 629 <div class="refsect2">
 630 <a name="GstVideoTestSrc--background-color"></a><h3>The <code class="literal">"background-color"</code> property</h3>
 631 <pre class="programlisting">  "background-color"         <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a>                 : Read / Write</pre>
 632 <p>
 633 Color to use for background color of some patterns.  Default is
 634 black (0xff000000).
 635 </p>
 636 <p>Default value: 4278190080</p>
 637 <p class="since">Since 0.10.31</p>
 638 </div>
 639 <hr>
 640 <div class="refsect2">
 641 <a name="GstVideoTestSrc--foreground-color"></a><h3>The <code class="literal">"foreground-color"</code> property</h3>
 642 <pre class="programlisting">  "foreground-color"         <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a>                 : Read / Write</pre>
 643 <p>
 644 Color to use for solid-color pattern and foreground color of other
 645 patterns.  Default is white (0xffffffff).
 646 </p>
 647 <p>Default value: 4294967295</p>
 648 <p class="since">Since 0.10.31</p>
 649 </div>
 650 <hr>
 651 <div class="refsect2">
 652 <a name="GstVideoTestSrc--horizontal-speed"></a><h3>The <code class="literal">"horizontal-speed"</code> property</h3>
 653 <pre class="programlisting">  "horizontal-speed"         <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 654 <p>Scroll image number of pixels per frame (positive is scroll to the left).</p>
 655 <p>Default value: 0</p>
 656 </div>
 657 </div>
 658 </div>
 659 <div class="footer">
 660 <hr>
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