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| <a href="#GstPluginFeature.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#GstPluginFeature.description" class="shortcut">Description</a> |
| | |
| <a href="#GstPluginFeature.object-hierarchy" class="shortcut">Object Hierarchy</a> |
| </td></tr> |
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| <div class="refentry"> |
| <a name="GstPluginFeature"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="GstPluginFeature.top_of_page"></a>GstPluginFeature</span></h2> |
| <p>GstPluginFeature — Base class for contents of a GstPlugin</p> |
| </td> |
| <td valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsynopsisdiv"> |
| <a name="GstPluginFeature.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <gst/gst.h> |
| |
| struct <a class="link" href="GstPluginFeature.html#GstPluginFeature-struct" title="struct GstPluginFeature">GstPluginFeature</a>; |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> (<a class="link" href="GstPluginFeature.html#GstPluginFeatureFilter" title="GstPluginFeatureFilter ()">*GstPluginFeatureFilter</a>) (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>); |
| enum <a class="link" href="GstPluginFeature.html#GstRank" title="enum GstRank">GstRank</a>; |
| <span class="returnvalue">void</span> <a class="link" href="GstPluginFeature.html#gst-plugin-feature-set-rank" title="gst_plugin_feature_set_rank ()">gst_plugin_feature_set_rank</a> (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> rank</code></em>); |
| #define <a class="link" href="GstPluginFeature.html#gst-plugin-feature-set-name" title="gst_plugin_feature_set_name()">gst_plugin_feature_set_name</a> (feature, |
| name) |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <a class="link" href="GstPluginFeature.html#gst-plugin-feature-get-rank" title="gst_plugin_feature_get_rank ()">gst_plugin_feature_get_rank</a> (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>); |
| #define <a class="link" href="GstPluginFeature.html#gst-plugin-feature-get-name" title="gst_plugin_feature_get_name()">gst_plugin_feature_get_name</a> (feature) |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="returnvalue">GstPluginFeature</span></a> * <a class="link" href="GstPluginFeature.html#gst-plugin-feature-load" title="gst_plugin_feature_load ()">gst_plugin_feature_load</a> (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>); |
| <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="GstPluginFeature.html#gst-plugin-feature-list-copy" title="gst_plugin_feature_list_copy ()">gst_plugin_feature_list_copy</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> *list</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstPluginFeature.html#gst-plugin-feature-list-free" title="gst_plugin_feature_list_free ()">gst_plugin_feature_list_free</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> *list</code></em>); |
| #define <a class="link" href="GstPluginFeature.html#GST-PLUGIN-FEATURE-LIST-DEBUG:CAPS" title="GST_PLUGIN_FEATURE_LIST_DEBUG()">GST_PLUGIN_FEATURE_LIST_DEBUG</a> (list) |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstPluginFeature.html#gst-plugin-feature-check-version" title="gst_plugin_feature_check_version ()">gst_plugin_feature_check_version</a> (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> min_major</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> min_minor</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> min_micro</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="GstPluginFeature.html#gst-plugin-feature-rank-compare-func" title="gst_plugin_feature_rank_compare_func ()">gst_plugin_feature_rank_compare_func</a> |
| (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gconstpointer"><span class="type">gconstpointer</span></a> p1</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gconstpointer"><span class="type">gconstpointer</span></a> p2</code></em>); |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstPluginFeature.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 class="link" href="GstObject.html" title="GstObject">GstObject</a> |
| +----GstPluginFeature |
| +----<a class="link" href="GstElementFactory.html" title="GstElementFactory">GstElementFactory</a> |
| +----<a class="link" href="GstTypeFindFactory.html" title="GstTypeFindFactory">GstTypeFindFactory</a> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstPluginFeature.description"></a><h2>Description</h2> |
| <p> |
| This is a base class for anything that can be added to a <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a>. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="GstPluginFeature.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="GstPluginFeature-struct"></a><h3>struct GstPluginFeature</h3> |
| <pre class="programlisting">struct GstPluginFeature;</pre> |
| <p> |
| Opaque <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> structure. |
| </p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstPluginFeatureFilter"></a><h3>GstPluginFeatureFilter ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> (*GstPluginFeatureFilter) (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre> |
| <p> |
| A function that can be used with e.g. <a class="link" href="GstRegistry.html#gst-registry-feature-filter" title="gst_registry_feature_filter ()"><code class="function">gst_registry_feature_filter()</code></a> |
| to get a list of pluginfeature that match certain criteria. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>the pluginfeature to check</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>the user_data that has been passed on e.g. |
| <a class="link" href="GstRegistry.html#gst-registry-feature-filter" title="gst_registry_feature_filter ()"><code class="function">gst_registry_feature_filter()</code></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> for a positive match, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRank"></a><h3>enum GstRank</h3> |
| <pre class="programlisting">typedef enum { |
| GST_RANK_NONE = 0, |
| GST_RANK_MARGINAL = 64, |
| GST_RANK_SECONDARY = 128, |
| GST_RANK_PRIMARY = 256 |
| } GstRank; |
| </pre> |
| <p> |
| Element priority ranks. Defines the order in which the autoplugger (or |
| similar rank-picking mechanisms, such as e.g. <a class="link" href="gstreamer-GstUriHandler.html#gst-element-make-from-uri" title="gst_element_make_from_uri ()"><code class="function">gst_element_make_from_uri()</code></a>) |
| will choose this element over an alternative one with the same function. |
| </p> |
| <p> |
| These constants serve as a rough guidance for defining the rank of a |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a>. Any value is valid, including values bigger than |
| <em class="parameter"><code>GST_RANK_PRIMARY</code></em>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><a name="GST-RANK-NONE:CAPS"></a><span class="term"><code class="literal">GST_RANK_NONE</code></span></p></td> |
| <td>will be chosen last or not at all |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-RANK-MARGINAL:CAPS"></a><span class="term"><code class="literal">GST_RANK_MARGINAL</code></span></p></td> |
| <td>unlikely to be chosen |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-RANK-SECONDARY:CAPS"></a><span class="term"><code class="literal">GST_RANK_SECONDARY</code></span></p></td> |
| <td>likely to be chosen |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-RANK-PRIMARY:CAPS"></a><span class="term"><code class="literal">GST_RANK_PRIMARY</code></span></p></td> |
| <td>will be chosen first |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-set-rank"></a><h3>gst_plugin_feature_set_rank ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_plugin_feature_set_rank (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> rank</code></em>);</pre> |
| <p> |
| Specifies a rank for a plugin feature, so that autoplugging uses |
| the most appropriate feature. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>feature to rank</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>rank</code></em> :</span></p></td> |
| <td>rank value - higher number means more priority rank</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-set-name"></a><h3>gst_plugin_feature_set_name()</h3> |
| <pre class="programlisting">#define gst_plugin_feature_set_name(feature,name) gst_object_set_name(GST_OBJECT_CAST(feature),name) |
| </pre> |
| <p> |
| Sets the name of the plugin feature, getting rid of the old name if there was one. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> to set the name of.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td> |
| <td>the new name</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-get-rank"></a><h3>gst_plugin_feature_get_rank ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> gst_plugin_feature_get_rank (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>);</pre> |
| <p> |
| Gets the rank of a plugin feature. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>a feature</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>The rank of the feature</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-get-name"></a><h3>gst_plugin_feature_get_name()</h3> |
| <pre class="programlisting">#define gst_plugin_feature_get_name(feature) GST_OBJECT_NAME(feature) |
| </pre> |
| <p> |
| Returns the name of <em class="parameter"><code>feature</code></em>. |
| For a nameless plugin feature, this returns NULL. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> to get the name of <em class="parameter"><code>feature</code></em>.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the name of <em class="parameter"><code>feature</code></em>. MT safe. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-load"></a><h3>gst_plugin_feature_load ()</h3> |
| <pre class="programlisting"><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="returnvalue">GstPluginFeature</span></a> * gst_plugin_feature_load (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>);</pre> |
| <p> |
| Loads the plugin containing <em class="parameter"><code>feature</code></em> if it's not already loaded. <em class="parameter"><code>feature</code></em> is |
| unaffected; use the return value instead. |
| </p> |
| <p> |
| Normally this function is used like this: |
| </p> |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1 |
| 2 |
| 3 |
| 4 |
| 5 |
| 6</pre></td> |
| <td class="listing_code"><pre class="programlisting">GstPluginFeature <span class="gtkdoc opt">*</span>loaded_feature<span class="gtkdoc opt">;</span> |
| |
| loaded_feature <span class="gtkdoc opt">=</span> <span class="function"><a href="../gstreamer-1.0/GstPluginFeature.html#gst-plugin-feature-load">gst_plugin_feature_load</a></span> <span class="gtkdoc opt">(</span>feature<span class="gtkdoc opt">);</span> |
| <span class="gtkdoc slc">// presumably, we're no longer interested in the potentially-unloaded feature</span> |
| <span class="function"><a href="../gstreamer-1.0/GstObject.html#gst-object-unref">gst_object_unref</a></span> <span class="gtkdoc opt">(</span>feature<span class="gtkdoc opt">);</span> |
| feature <span class="gtkdoc opt">=</span> loaded_feature<span class="gtkdoc opt">;</span></pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| |
| <p> |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>the plugin feature to check. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a reference to the loaded feature, or NULL on error. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-list-copy"></a><h3>gst_plugin_feature_list_copy ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * gst_plugin_feature_list_copy (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> *list</code></em>);</pre> |
| <p> |
| Copies the list of features. Caller should call <em class="parameter"><code>gst_plugin_feature_list_free</code></em> |
| when done with the list. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>list</code></em> :</span></p></td> |
| <td>list |
| of <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a>. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.PluginFeature]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a copy of <em class="parameter"><code>list</code></em>, |
| with each feature's reference count incremented. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.PluginFeature]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 0.10.26</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-list-free"></a><h3>gst_plugin_feature_list_free ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_plugin_feature_list_free (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> *list</code></em>);</pre> |
| <p> |
| Unrefs each member of <em class="parameter"><code>list</code></em>, then frees the list. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody><tr> |
| <td><p><span class="term"><em class="parameter"><code>list</code></em> :</span></p></td> |
| <td>list |
| of <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.PluginFeature]</span> |
| </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GST-PLUGIN-FEATURE-LIST-DEBUG:CAPS"></a><h3>GST_PLUGIN_FEATURE_LIST_DEBUG()</h3> |
| <pre class="programlisting">#define GST_PLUGIN_FEATURE_LIST_DEBUG(list) gst_plugin_feature_list_debug(list) |
| </pre> |
| <p> |
| Debug the plugin feature names in <em class="parameter"><code>list</code></em>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody><tr> |
| <td><p><span class="term"><em class="parameter"><code>list</code></em> :</span></p></td> |
| <td>a <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of |
| plugin features. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.PluginFeature]</span> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <p class="since">Since 0.10.31</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-check-version"></a><h3>gst_plugin_feature_check_version ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_plugin_feature_check_version (<em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> min_major</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> min_minor</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> min_micro</code></em>);</pre> |
| <p> |
| Checks whether the given plugin feature is at least |
| the required version |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>a feature</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>min_major</code></em> :</span></p></td> |
| <td>minimum required major version</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>min_minor</code></em> :</span></p></td> |
| <td>minimum required minor version</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>min_micro</code></em> :</span></p></td> |
| <td>minimum required micro version</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><span class="type">TRUE</span></a> if the plugin feature has at least |
| the required version, otherwise <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><span class="type">FALSE</span></a>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-plugin-feature-rank-compare-func"></a><h3>gst_plugin_feature_rank_compare_func ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_plugin_feature_rank_compare_func |
| (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gconstpointer"><span class="type">gconstpointer</span></a> p1</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gconstpointer"><span class="type">gconstpointer</span></a> p2</code></em>);</pre> |
| <p> |
| Compares the two given <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> instances. This function can be |
| used as a <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GCompareFunc"><span class="type">GCompareFunc</span></a> when sorting by rank and then by name. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>p1</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>p2</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>negative value if the rank of p1 > the rank of p2 or the ranks are |
| equal but the name of p1 comes before the name of p2; zero if the rank |
| and names are equal; positive value if the rank of p1 < the rank of p2 or the |
| ranks are equal but the name of p2 comes after the name of p1</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 0.10.31</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstPluginFeature.see-also"></a><h2>See Also</h2> |
| <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> |
| </div> |
| </div> |
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