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  24 <a href="#gst-plugins-base-libs-gstpropertyprobe.synopsis" class="shortcut">Top</a>
  25                    |
  26                   <a href="#gst-plugins-base-libs-gstpropertyprobe.description" class="shortcut">Description</a>
  27                    |
  28                   <a href="#gst-plugins-base-libs-gstpropertyprobe.object-hierarchy" class="shortcut">Object Hierarchy</a>
  29                    |
  30                   <a href="#gst-plugins-base-libs-gstpropertyprobe.signals" class="shortcut">Signals</a>
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  33 <div class="refentry">
  34 <a name="gst-plugins-base-libs-gstpropertyprobe"></a><div class="titlepage"></div>
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  37 <h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstpropertyprobe.top_of_page"></a>gstpropertyprobe</span></h2>
  38 <p>gstpropertyprobe — Interface for probing possible property values</p>
  39 </td>
  40 <td valign="top" align="right"></td>
  41 </tr></table></div>
  42 <div class="refsynopsisdiv">
  43 <a name="gst-plugins-base-libs-gstpropertyprobe.synopsis"></a><h2>Synopsis</h2>
  44 <a name="GstPropertyProbe"></a><pre class="synopsis">
  45 #include &lt;gst/interfaces/propertyprobe.h&gt;
  46
  47                     <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe-struct" title="GstPropertyProbe">GstPropertyProbe</a>;
  48 struct              <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbeInterface" title="struct GstPropertyProbeInterface">GstPropertyProbeInterface</a>;
  49 const <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *       <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-get-properties" title="gst_property_probe_get_properties ()">gst_property_probe_get_properties</a>   (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>);
  50 const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="returnvalue">GParamSpec</span></a> *  <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-get-property" title="gst_property_probe_get_property ()">gst_property_probe_get_property</a>     (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  51                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
  52 <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Value-arrays.html#GValueArray"><span class="returnvalue">GValueArray</span></a> *       <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-get-values" title="gst_property_probe_get_values ()">gst_property_probe_get_values</a>       (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  53                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> *pspec</code></em>);
  54 <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Value-arrays.html#GValueArray"><span class="returnvalue">GValueArray</span></a> *       <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-get-values-name" title="gst_property_probe_get_values_name ()">gst_property_probe_get_values_name</a>  (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  55                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
  56 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-needs-probe" title="gst_property_probe_needs_probe ()">gst_property_probe_needs_probe</a>      (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  57                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> *pspec</code></em>);
  58 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-needs-probe-name" title="gst_property_probe_needs_probe_name ()">gst_property_probe_needs_probe_name</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  59                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
  60 <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Value-arrays.html#GValueArray"><span class="returnvalue">GValueArray</span></a> *       <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-probe-and-get-values" title="gst_property_probe_probe_and_get_values ()">gst_property_probe_probe_and_get_values</a>
  61                                                         (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  62                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> *pspec</code></em>);
  63 <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Value-arrays.html#GValueArray"><span class="returnvalue">GValueArray</span></a> *       <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-probe-and-get-values-name" title="gst_property_probe_probe_and_get_values_name ()">gst_property_probe_probe_and_get_values_name</a>
  64                                                         (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  65                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
  66 <span class="returnvalue">void</span>                <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-probe-property" title="gst_property_probe_probe_property ()">gst_property_probe_probe_property</a>   (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  67                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> *pspec</code></em>);
  68 <span class="returnvalue">void</span>                <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-probe-property-name" title="gst_property_probe_probe_property_name ()">gst_property_probe_probe_property_name</a>
  69                                                         (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
  70                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
  71 </pre>
  72 </div>
  73 <div class="refsect1">
  74 <a name="gst-plugins-base-libs-gstpropertyprobe.object-hierarchy"></a><h2>Object Hierarchy</h2>
  75 <pre class="synopsis">
  76   GInterface
  77    +----GstPropertyProbe
  78 </pre>
  79 </div>
  80 <div class="refsect1">
  81 <a name="gst-plugins-base-libs-gstpropertyprobe.signals"></a><h2>Signals</h2>
  82 <pre class="synopsis">
  83   "<a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe-probe-needed" title='The "probe-needed" signal'>probe-needed</a>"                                   : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
  84 </pre>
  85 </div>
  86 <div class="refsect1">
  87 <a name="gst-plugins-base-libs-gstpropertyprobe.description"></a><h2>Description</h2>
  88 <p>
  89 The property probe is a way to autodetect allowed values for a GObject
  90 property. It's primary use is to autodetect device-names in several elements.
  91 </p>
  92 <p>
  93 The interface is implemented by many hardware sources and sinks.
  94 </p>
  95 </div>
  96 <div class="refsect1">
  97 <a name="gst-plugins-base-libs-gstpropertyprobe.details"></a><h2>Details</h2>
  98 <div class="refsect2">
  99 <a name="GstPropertyProbe-struct"></a><h3>GstPropertyProbe</h3>
 100 <pre class="programlisting">typedef struct _GstPropertyProbe GstPropertyProbe;</pre>
 101 <p>
 102 Opaque <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> data structure.
 103 </p>
 104 </div>
 105 <hr>
 106 <div class="refsect2">
 107 <a name="GstPropertyProbeInterface"></a><h3>struct GstPropertyProbeInterface</h3>
 108 <pre class="programlisting">struct GstPropertyProbeInterface {
 109   GTypeInterface klass;
 110
 111   /* signals */
 112   void          (*probe_needed)   (GstPropertyProbe *probe,
 113                                    const GParamSpec *pspec);
 114
 115   /* virtual functions */
 116   const GList * (*get_properties) (GstPropertyProbe *probe);
 117   gboolean      (*needs_probe)    (GstPropertyProbe *probe,
 118                                    guint             prop_id,
 119                                    const GParamSpec *pspec);
 120   void          (*probe_property) (GstPropertyProbe *probe,
 121                                    guint             prop_id,
 122                                    const GParamSpec *pspec);
 123   GValueArray * (*get_values)     (GstPropertyProbe *probe,
 124                                    guint             prop_id,
 125                                    const GParamSpec *pspec);
 126 };
 127 </pre>
 128 <p>
 129 <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> interface.
 130 </p>
 131 <div class="variablelist"><table border="0">
 132 <col align="left" valign="top">
 133 <tbody>
 134 <tr>
 135 <td><p><span class="term"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GTypeInterface"><span class="type">GTypeInterface</span></a> <em class="structfield"><code><a name="GstPropertyProbeInterface.klass"></a>klass</code></em>;</span></p></td>
 136 <td>parent interface type.</td>
 137 </tr>
 138 <tr>
 139 <td><p><span class="term"><em class="structfield"><code><a name="GstPropertyProbeInterface.probe-needed"></a>probe_needed</code></em> ()</span></p></td>
 140 <td>default signal handler</td>
 141 </tr>
 142 <tr>
 143 <td><p><span class="term"><em class="structfield"><code><a name="GstPropertyProbeInterface.get-properties"></a>get_properties</code></em> ()</span></p></td>
 144 <td>virtual method to get list of probable properties</td>
 145 </tr>
 146 <tr>
 147 <td><p><span class="term"><em class="structfield"><code><a name="GstPropertyProbeInterface.needs-probe"></a>needs_probe</code></em> ()</span></p></td>
 148 <td>virtual method to tell if probe need update</td>
 149 </tr>
 150 <tr>
 151 <td><p><span class="term"><em class="structfield"><code><a name="GstPropertyProbeInterface.probe-property"></a>probe_property</code></em> ()</span></p></td>
 152 <td>virtual method to probe a property</td>
 153 </tr>
 154 <tr>
 155 <td><p><span class="term"><em class="structfield"><code><a name="GstPropertyProbeInterface.get-values"></a>get_values</code></em> ()</span></p></td>
 156 <td>virtual method to get probe results for a property</td>
 157 </tr>
 158 </tbody>
 159 </table></div>
 160 </div>
 161 <hr>
 162 <div class="refsect2">
 163 <a name="gst-property-probe-get-properties"></a><h3>gst_property_probe_get_properties ()</h3>
 164 <pre class="programlisting">const <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *       gst_property_probe_get_properties   (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>);</pre>
 165 <p>
 166 Get a list of properties for which probing is supported.
 167 </p>
 168 <div class="variablelist"><table border="0">
 169 <col align="left" valign="top">
 170 <tbody>
 171 <tr>
 172 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 173 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> to get the properties for.</td>
 174 </tr>
 175 <tr>
 176 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 177 <td>the list of <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> * pointers representing
 178 properties for which probing is supported by this element.</td>
 179 </tr>
 180 </tbody>
 181 </table></div>
 182 </div>
 183 <hr>
 184 <div class="refsect2">
 185 <a name="gst-property-probe-get-property"></a><h3>gst_property_probe_get_property ()</h3>
 186 <pre class="programlisting">const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="returnvalue">GParamSpec</span></a> *  gst_property_probe_get_property     (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 187                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 188 <p>
 189 Get <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> for a property for which probing is supported.
 190 </p>
 191 <div class="variablelist"><table border="0">
 192 <col align="left" valign="top">
 193 <tbody>
 194 <tr>
 195 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 196 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> to get the properties for.</td>
 197 </tr>
 198 <tr>
 199 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 200 <td>name of the property.</td>
 201 </tr>
 202 <tr>
 203 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 204 <td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> of <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</td>
 205 </tr>
 206 </tbody>
 207 </table></div>
 208 </div>
 209 <hr>
 210 <div class="refsect2">
 211 <a name="gst-property-probe-get-values"></a><h3>gst_property_probe_get_values ()</h3>
 212 <pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Value-arrays.html#GValueArray"><span class="returnvalue">GValueArray</span></a> *       gst_property_probe_get_values       (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 213                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> *pspec</code></em>);</pre>
 214 <p>
 215 Gets the possible (probed) values for the given property,
 216 requires the property to have been probed before.
 217 </p>
 218 <div class="variablelist"><table border="0">
 219 <col align="left" valign="top">
 220 <tbody>
 221 <tr>
 222 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 223 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> object.</td>
 224 </tr>
 225 <tr>
 226 <td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
 227 <td>the <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> property identifier.</td>
 228 </tr>
 229 <tr>
 230 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 231 <td>A list of valid values for the given property.</td>
 232 </tr>
 233 </tbody>
 234 </table></div>
 235 </div>
 236 <hr>
 237 <div class="refsect2">
 238 <a name="gst-property-probe-get-values-name"></a><h3>gst_property_probe_get_values_name ()</h3>
 239 <pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Value-arrays.html#GValueArray"><span class="returnvalue">GValueArray</span></a> *       gst_property_probe_get_values_name  (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 240                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 241 <p>
 242 Same as <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-get-values" title="gst_property_probe_get_values ()"><code class="function">gst_property_probe_get_values()</code></a>.
 243 </p>
 244 <div class="variablelist"><table border="0">
 245 <col align="left" valign="top">
 246 <tbody>
 247 <tr>
 248 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 249 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> object.</td>
 250 </tr>
 251 <tr>
 252 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 253 <td>the name of the property to get values for.</td>
 254 </tr>
 255 <tr>
 256 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 257 <td>A list of valid values for the given property.</td>
 258 </tr>
 259 </tbody>
 260 </table></div>
 261 </div>
 262 <hr>
 263 <div class="refsect2">
 264 <a name="gst-property-probe-needs-probe"></a><h3>gst_property_probe_needs_probe ()</h3>
 265 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_property_probe_needs_probe      (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 266                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> *pspec</code></em>);</pre>
 267 <p>
 268 Checks whether a property needs a probe. This might be because
 269 the property wasn't initialized before, or because host setup
 270 changed. This might be, for example, because a new device was
 271 added, and thus device probing needs to be refreshed to display
 272 the new device.
 273 </p>
 274 <div class="variablelist"><table border="0">
 275 <col align="left" valign="top">
 276 <tbody>
 277 <tr>
 278 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 279 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> object to which the given property belongs.</td>
 280 </tr>
 281 <tr>
 282 <td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
 283 <td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> that identifies the property to check.</td>
 284 </tr>
 285 <tr>
 286 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 287 <td>TRUE if the property needs a new probe, FALSE if not.</td>
 288 </tr>
 289 </tbody>
 290 </table></div>
 291 </div>
 292 <hr>
 293 <div class="refsect2">
 294 <a name="gst-property-probe-needs-probe-name"></a><h3>gst_property_probe_needs_probe_name ()</h3>
 295 <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gst_property_probe_needs_probe_name (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 296                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 297 <p>
 298 Same as <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-needs-probe" title="gst_property_probe_needs_probe ()"><code class="function">gst_property_probe_needs_probe()</code></a>.
 299 </p>
 300 <div class="variablelist"><table border="0">
 301 <col align="left" valign="top">
 302 <tbody>
 303 <tr>
 304 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 305 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> object to which the given property belongs.</td>
 306 </tr>
 307 <tr>
 308 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 309 <td>the name of the property to check.</td>
 310 </tr>
 311 <tr>
 312 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 313 <td>TRUE if the property needs a new probe, FALSE if not.</td>
 314 </tr>
 315 </tbody>
 316 </table></div>
 317 </div>
 318 <hr>
 319 <div class="refsect2">
 320 <a name="gst-property-probe-probe-and-get-values"></a><h3>gst_property_probe_probe_and_get_values ()</h3>
 321 <pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Value-arrays.html#GValueArray"><span class="returnvalue">GValueArray</span></a> *       gst_property_probe_probe_and_get_values
 322                                                         (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 323                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> *pspec</code></em>);</pre>
 324 <p>
 325 Check whether the given property requires a new probe. If so,
 326 fo the probe. After that, retrieve a value list. Meant as a
 327 utility function that wraps the above functions.
 328 </p>
 329 <div class="variablelist"><table border="0">
 330 <col align="left" valign="top">
 331 <tbody>
 332 <tr>
 333 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 334 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> object.</td>
 335 </tr>
 336 <tr>
 337 <td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
 338 <td>The <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> property identifier.</td>
 339 </tr>
 340 <tr>
 341 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 342 <td>the list of valid values for this property.</td>
 343 </tr>
 344 </tbody>
 345 </table></div>
 346 </div>
 347 <hr>
 348 <div class="refsect2">
 349 <a name="gst-property-probe-probe-and-get-values-name"></a><h3>gst_property_probe_probe_and_get_values_name ()</h3>
 350 <pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Value-arrays.html#GValueArray"><span class="returnvalue">GValueArray</span></a> *       gst_property_probe_probe_and_get_values_name
 351                                                         (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 352                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 353 <p>
 354 Same as <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#gst-property-probe-probe-and-get-values" title="gst_property_probe_probe_and_get_values ()"><code class="function">gst_property_probe_probe_and_get_values()</code></a>.
 355 </p>
 356 <div class="variablelist"><table border="0">
 357 <col align="left" valign="top">
 358 <tbody>
 359 <tr>
 360 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 361 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> object.</td>
 362 </tr>
 363 <tr>
 364 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 365 <td>the name of the property to get values for.</td>
 366 </tr>
 367 <tr>
 368 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 369 <td>the list of valid values for this property.</td>
 370 </tr>
 371 </tbody>
 372 </table></div>
 373 </div>
 374 <hr>
 375 <div class="refsect2">
 376 <a name="gst-property-probe-probe-property"></a><h3>gst_property_probe_probe_property ()</h3>
 377 <pre class="programlisting"><span class="returnvalue">void</span>                gst_property_probe_probe_property   (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 378                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> *pspec</code></em>);</pre>
 379 <p>
 380 Runs a probe on the property specified by <em class="parameter"><code>pspec</code></em>
 381 </p>
 382 <div class="variablelist"><table border="0">
 383 <col align="left" valign="top">
 384 <tbody>
 385 <tr>
 386 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 387 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> to check.</td>
 388 </tr>
 389 <tr>
 390 <td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
 391 <td>
 392 <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> of the property.</td>
 393 </tr>
 394 </tbody>
 395 </table></div>
 396 </div>
 397 <hr>
 398 <div class="refsect2">
 399 <a name="gst-property-probe-probe-property-name"></a><h3>gst_property_probe_probe_property_name ()</h3>
 400 <pre class="programlisting"><span class="returnvalue">void</span>                gst_property_probe_probe_property_name
 401                                                         (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *probe</code></em>,
 402                                                          <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 403 <p>
 404 Runs a probe on the property specified by <em class="parameter"><code>name</code></em>.
 405 </p>
 406 <div class="variablelist"><table border="0">
 407 <col align="left" valign="top">
 408 <tbody>
 409 <tr>
 410 <td><p><span class="term"><em class="parameter"><code>probe</code></em> :</span></p></td>
 411 <td>the <a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> to check.</td>
 412 </tr>
 413 <tr>
 414 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 415 <td>name of the property.</td>
 416 </tr>
 417 </tbody>
 418 </table></div>
 419 </div>
 420 </div>
 421 <div class="refsect1">
 422 <a name="gst-plugins-base-libs-gstpropertyprobe.signal-details"></a><h2>Signal Details</h2>
 423 <div class="refsect2">
 424 <a name="GstPropertyProbe-probe-needed"></a><h3>The <code class="literal">"probe-needed"</code> signal</h3>
 425 <pre class="programlisting"><span class="returnvalue">void</span>                user_function                      (<a class="link" href="gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe"><span class="type">GstPropertyProbe</span></a> *pspec,
 426                                                         <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>          arg1,
 427                                                         <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>          user_data)      : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
 428 <div class="variablelist"><table border="0">
 429 <col align="left" valign="top">
 430 <tbody>
 431 <tr>
 432 <td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
 433 <td>
 434 <a href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"><span class="type">GParamSpec</span></a> that needs a probe</td>
 435 </tr>
 436 <tr>
 437 <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
 438 <td>user data set when the signal handler was connected.</td>
 439 </tr>
 440 </tbody>
 441 </table></div>
 442 </div>
 443 </div>
 444 </div>
 445 <div class="footer">
 446 <hr>
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