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| <a href="#GstRegistry.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#GstRegistry.description" class="shortcut">Description</a> |
| | |
| <a href="#GstRegistry.object-hierarchy" class="shortcut">Object Hierarchy</a> |
| | |
| <a href="#GstRegistry.signals" class="shortcut">Signals</a> |
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| <div class="refentry"> |
| <a name="GstRegistry"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="GstRegistry.top_of_page"></a>GstRegistry</span></h2> |
| <p>GstRegistry — Abstract base class for management of <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> objects</p> |
| </td> |
| <td valign="top" align="right"></td> |
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| <div class="refsynopsisdiv"> |
| <a name="GstRegistry.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <gst/gst.h> |
| |
| struct <a class="link" href="GstRegistry.html#GstRegistry-struct" title="struct GstRegistry">GstRegistry</a>; |
| <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="returnvalue">GstRegistry</span></a> * <a class="link" href="GstRegistry.html#gst-registry-get" title="gst_registry_get ()">gst_registry_get</a> (<em class="parameter"><code><span class="type">void</span></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="GstRegistry.html#gst-registry-get-feature-list" title="gst_registry_get_feature_list ()">gst_registry_get_feature_list</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>); |
| <span class="returnvalue">guint32</span> <a class="link" href="GstRegistry.html#gst-registry-get-feature-list-cookie" title="gst_registry_get_feature_list_cookie ()">gst_registry_get_feature_list_cookie</a> |
| (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</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="GstRegistry.html#gst-registry-get-feature-list-by-plugin" title="gst_registry_get_feature_list_by_plugin ()">gst_registry_get_feature_list_by_plugin</a> |
| (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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>); |
| <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="GstRegistry.html#gst-registry-get-plugin-list" title="gst_registry_get_plugin_list ()">gst_registry_get_plugin_list</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstRegistry.html#gst-registry-add-plugin" title="gst_registry_add_plugin ()">gst_registry_add_plugin</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstRegistry.html#gst-registry-remove-plugin" title="gst_registry_remove_plugin ()">gst_registry_remove_plugin</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin</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="GstRegistry.html#gst-registry-plugin-filter" title="gst_registry_plugin_filter ()">gst_registry_plugin_filter</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPlugin.html#GstPluginFilter" title="GstPluginFilter ()"><span class="type">GstPluginFilter</span></a> filter</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> first</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>); |
| <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="GstRegistry.html#gst-registry-feature-filter" title="gst_registry_feature_filter ()">gst_registry_feature_filter</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPluginFeature.html#GstPluginFeatureFilter" title="GstPluginFeatureFilter ()"><span class="type">GstPluginFeatureFilter</span></a> filter</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> first</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>); |
| <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="returnvalue">GstPlugin</span></a> * <a class="link" href="GstRegistry.html#gst-registry-find-plugin" title="gst_registry_find_plugin ()">gst_registry_find_plugin</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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>); |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="returnvalue">GstPluginFeature</span></a> * <a class="link" href="GstRegistry.html#gst-registry-find-feature" title="gst_registry_find_feature ()">gst_registry_find_feature</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>); |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="returnvalue">GstPluginFeature</span></a> * <a class="link" href="GstRegistry.html#gst-registry-lookup-feature" title="gst_registry_lookup_feature ()">gst_registry_lookup_feature</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code>const <span class="type">char</span> *name</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstRegistry.html#gst-registry-scan-path" title="gst_registry_scan_path ()">gst_registry_scan_path</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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> *path</code></em>); |
| <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="returnvalue">GstPlugin</span></a> * <a class="link" href="GstRegistry.html#gst-registry-lookup" title="gst_registry_lookup ()">gst_registry_lookup</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code>const <span class="type">char</span> *filename</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstRegistry.html#gst-registry-remove-feature" title="gst_registry_remove_feature ()">gst_registry_remove_feature</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstRegistry.html#gst-registry-add-feature" title="gst_registry_add_feature ()">gst_registry_add_feature</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstRegistry.html#gst-registry-check-feature-version" title="gst_registry_check_feature_version ()">gst_registry_check_feature_version</a> (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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> *feature_name</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> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.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> |
| +----GstRegistry |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.signals"></a><h2>Signals</h2> |
| <pre class="synopsis"> |
| "<a class="link" href="GstRegistry.html#GstRegistry-feature-added" title='The "feature-added" signal'>feature-added</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> |
| "<a class="link" href="GstRegistry.html#GstRegistry-plugin-added" title='The "plugin-added" signal'>plugin-added</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> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.description"></a><h2>Description</h2> |
| <p> |
| One registry holds the metadata of a set of plugins. |
| </p> |
| <p> |
| <span class="bold"><strong>Design:</strong></span> |
| </p> |
| <p> |
| The <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> object is a list of plugins and some functions for dealing |
| with them. Each <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> is matched 1-1 with a file on disk, and may or may |
| not be loaded at a given time. |
| </p> |
| <p> |
| The primary source, at all times, of plugin information is each plugin file |
| itself. Thus, if an application wants information about a particular plugin, |
| or wants to search for a feature that satisfies given criteria, the primary |
| means of doing so is to load every plugin and look at the resulting |
| information that is gathered in the default registry. Clearly, this is a time |
| consuming process, so we cache information in the registry file. The format |
| and location of the cache file is internal to gstreamer. |
| </p> |
| <p> |
| On startup, plugins are searched for in the plugin search path. The following |
| locations are checked in this order: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"><p>location from --gst-plugin-path commandline option.</p></li> |
| <li class="listitem"><p>the GST_PLUGIN_PATH environment variable.</p></li> |
| <li class="listitem"><p>the GST_PLUGIN_SYSTEM_PATH environment variable.</p></li> |
| <li class="listitem"><p>default locations (if GST_PLUGIN_SYSTEM_PATH is not set). Those |
| default locations are: |
| <code class="filename">~/.gstreamer-$GST_API_VERSION/plugins/</code> |
| and <code class="filename">$prefix/libs/gstreamer-$GST_API_VERSION/</code>. |
| </p></li> |
| </ul></div> |
| <p> |
| The registry cache file is loaded from |
| <code class="filename">~/.gstreamer-$GST_API_VERSION/registry-$ARCH.bin</code> or the |
| file listed in the GST_REGISTRY env var. One reason to change the registry |
| location is for testing. |
| </p> |
| <p> |
| For each plugin that is found in the plugin search path, there could be 3 |
| possibilities for cached information: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"><p>the cache may not contain information about a given file.</p></li> |
| <li class="listitem"><p>the cache may have stale information.</p></li> |
| <li class="listitem"><p>the cache may have current information.</p></li> |
| </ul></div> |
| <p> |
| </p> |
| <p> |
| In the first two cases, the plugin is loaded and the cache updated. In |
| addition to these cases, the cache may have entries for plugins that are not |
| relevant to the current process. These are marked as not available to the |
| current process. If the cache is updated for whatever reason, it is marked |
| dirty. |
| </p> |
| <p> |
| A dirty cache is written out at the end of initialization. Each entry is |
| checked to make sure the information is minimally valid. If not, the entry is |
| simply dropped. |
| </p> |
| <p> |
| <span class="bold"><strong>Implementation notes:</strong></span> |
| </p> |
| <p> |
| The "cache" and "registry" are different concepts and can represent |
| different sets of plugins. For various reasons, at init time, the cache is |
| stored in the default registry, and plugins not relevant to the current |
| process are marked with the <a class="link" href="GstPlugin.html#GST-PLUGIN-FLAG-CACHED:CAPS"><code class="literal">GST_PLUGIN_FLAG_CACHED</code></a> bit. These plugins are |
| removed at the end of initialization. |
| </p> |
| <p> |
| Last reviewed on 2012-03-29 (0.11.3) |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="GstRegistry-struct"></a><h3>struct GstRegistry</h3> |
| <pre class="programlisting">struct GstRegistry;</pre> |
| <p> |
| Opaque <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> structure. |
| </p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-get"></a><h3>gst_registry_get ()</h3> |
| <pre class="programlisting"><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="returnvalue">GstRegistry</span></a> * gst_registry_get (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> |
| <p> |
| Retrieves the singleton plugin registry. The caller does not own a |
| reference on the registry, as it is alive as long as GStreamer is |
| initialized. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody><tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a>. <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-registry-get-feature-list"></a><h3>gst_registry_get_feature_list ()</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_registry_get_feature_list (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre> |
| <p> |
| Retrieves a <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> of <em class="parameter"><code>type</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>registry</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td> |
| <td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a>.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</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 |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> of <em class="parameter"><code>type</code></em>. Use <a class="link" href="GstPluginFeature.html#gst-plugin-feature-list-free" title="gst_plugin_feature_list_free ()"><code class="function">gst_plugin_feature_list_free()</code></a> after use |
| MT safe. <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-registry-get-feature-list-cookie"></a><h3>gst_registry_get_feature_list_cookie ()</h3> |
| <pre class="programlisting"><span class="returnvalue">guint32</span> gst_registry_get_feature_list_cookie |
| (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>);</pre> |
| <p> |
| Returns the registrys feature list cookie. This changes |
| every time a feature is added or removed from the registry. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the feature list cookie.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-get-feature-list-by-plugin"></a><h3>gst_registry_get_feature_list_by_plugin ()</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_registry_get_feature_list_by_plugin |
| (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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> |
| <p> |
| Retrieves a <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of features of the plugin with name <em class="parameter"><code>name</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>registry</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a>.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td> |
| <td>a plugin name.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</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 |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a>. Use <a class="link" href="GstPluginFeature.html#gst-plugin-feature-list-free" title="gst_plugin_feature_list_free ()"><code class="function">gst_plugin_feature_list_free()</code></a> after usage. <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-registry-get-plugin-list"></a><h3>gst_registry_get_plugin_list ()</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_registry_get_plugin_list (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>);</pre> |
| <p> |
| Get a copy of all plugins registered in the given registry. The refcount |
| of each element in the list in incremented. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry to search</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</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 <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a>. |
| Use <a class="link" href="GstPlugin.html#gst-plugin-list-free" title="gst_plugin_list_free ()"><code class="function">gst_plugin_list_free()</code></a> after usage. |
| MT safe. <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.Plugin]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-add-plugin"></a><h3>gst_registry_add_plugin ()</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_registry_add_plugin (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin</code></em>);</pre> |
| <p> |
| Add the plugin to the registry. The plugin-added signal will be emitted. |
| This function will sink <em class="parameter"><code>plugin</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>registry</code></em> :</span></p></td> |
| <td>the registry to add the plugin to</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>plugin</code></em> :</span></p></td> |
| <td>the plugin to add. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>TRUE on success. |
| MT safe.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-remove-plugin"></a><h3>gst_registry_remove_plugin ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_registry_remove_plugin (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin</code></em>);</pre> |
| <p> |
| Remove the plugin from the registry. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry to remove the plugin from</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>plugin</code></em> :</span></p></td> |
| <td>the plugin to remove. <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-registry-plugin-filter"></a><h3>gst_registry_plugin_filter ()</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_registry_plugin_filter (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPlugin.html#GstPluginFilter" title="GstPluginFilter ()"><span class="type">GstPluginFilter</span></a> filter</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> first</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> |
| Runs a filter against all plugins in the registry and returns a <a href="http://library.gnome.org/devel/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> with |
| the results. If the first flag is set, only the first match is |
| returned (as a list with a single object). |
| Every plugin is reffed; use <a class="link" href="GstPlugin.html#gst-plugin-list-free" title="gst_plugin_list_free ()"><code class="function">gst_plugin_list_free()</code></a> after use, which |
| will unref again. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>registry to query</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>filter</code></em> :</span></p></td> |
| <td>the filter to use. <span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>first</code></em> :</span></p></td> |
| <td>only return first match</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data passed to the filter function. <span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</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 <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a>. |
| Use <a class="link" href="GstPlugin.html#gst-plugin-list-free" title="gst_plugin_list_free ()"><code class="function">gst_plugin_list_free()</code></a> after usage. |
| MT safe. <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.Plugin]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-feature-filter"></a><h3>gst_registry_feature_filter ()</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_registry_feature_filter (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPluginFeature.html#GstPluginFeatureFilter" title="GstPluginFeatureFilter ()"><span class="type">GstPluginFeatureFilter</span></a> filter</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> first</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> |
| Runs a filter against all features of the plugins in the registry |
| and returns a GList with the results. |
| If the first flag is set, only the first match is |
| returned (as a list with a single object). |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>registry to query</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>filter</code></em> :</span></p></td> |
| <td>the filter to use. <span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>first</code></em> :</span></p></td> |
| <td>only return first match</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data passed to the filter function. <span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</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 |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a>. Use <a class="link" href="GstPluginFeature.html#gst-plugin-feature-list-free" title="gst_plugin_feature_list_free ()"><code class="function">gst_plugin_feature_list_free()</code></a> after usage. |
| MT safe. <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-registry-find-plugin"></a><h3>gst_registry_find_plugin ()</h3> |
| <pre class="programlisting"><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="returnvalue">GstPlugin</span></a> * gst_registry_find_plugin (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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> |
| <p> |
| Find the plugin with the given name in the registry. |
| The plugin will be reffed; caller is responsible for unreffing. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry to search</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td> |
| <td>the plugin name to find</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the plugin with the given name or NULL if the |
| plugin was not found. <a class="link" href="GstObject.html#gst-object-unref" title="gst_object_unref ()"><code class="function">gst_object_unref()</code></a> after usage. |
| MT safe. <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-registry-find-feature"></a><h3>gst_registry_find_feature ()</h3> |
| <pre class="programlisting"><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="returnvalue">GstPluginFeature</span></a> * gst_registry_find_feature (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre> |
| <p> |
| Find the pluginfeature with the given name and type in the registry. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry to search</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td> |
| <td>the pluginfeature name to find</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td> |
| <td>the pluginfeature type to find</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the pluginfeature with the given name and type |
| or NULL if the plugin was not found. <a class="link" href="GstObject.html#gst-object-unref" title="gst_object_unref ()"><code class="function">gst_object_unref()</code></a> after usage. |
| MT safe. <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-registry-lookup-feature"></a><h3>gst_registry_lookup_feature ()</h3> |
| <pre class="programlisting"><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="returnvalue">GstPluginFeature</span></a> * gst_registry_lookup_feature (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code>const <span class="type">char</span> *name</code></em>);</pre> |
| <p> |
| Find a <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> with <em class="parameter"><code>name</code></em> in <em class="parameter"><code>registry</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>registry</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> name</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> with its refcount incremented, |
| use <a class="link" href="GstObject.html#gst-object-unref" title="gst_object_unref ()"><code class="function">gst_object_unref()</code></a> after usage. |
| MT safe. <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-registry-scan-path"></a><h3>gst_registry_scan_path ()</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_registry_scan_path (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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> *path</code></em>);</pre> |
| <p> |
| Scan the given path for plugins to add to the registry. The syntax of the |
| path is specific to the registry. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry to add found plugins to</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>path</code></em> :</span></p></td> |
| <td>the path to scan</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> if registry changed</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-lookup"></a><h3>gst_registry_lookup ()</h3> |
| <pre class="programlisting"><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="returnvalue">GstPlugin</span></a> * gst_registry_lookup (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code>const <span class="type">char</span> *filename</code></em>);</pre> |
| <p> |
| Look up a plugin in the given registry with the given filename. |
| If found, plugin is reffed. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry to look up in</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td> |
| <td>the name of the file to look up</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> if found, or NULL if not. |
| <a class="link" href="GstObject.html#gst-object-unref" title="gst_object_unref ()"><code class="function">gst_object_unref()</code></a> after usage. <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-registry-remove-feature"></a><h3>gst_registry_remove_feature ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_registry_remove_feature (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>);</pre> |
| <p> |
| Remove the feature from the registry. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry to remove the feature from</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>the feature to remove. <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-registry-add-feature"></a><h3>gst_registry_add_feature ()</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_registry_add_feature (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <em class="parameter"><code><a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature</code></em>);</pre> |
| <p> |
| Add the feature to the registry. The feature-added signal will be emitted. |
| This function sinks <em class="parameter"><code>feature</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>registry</code></em> :</span></p></td> |
| <td>the registry to add the plugin to</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>the feature to add. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>TRUE on success. |
| MT safe.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-check-feature-version"></a><h3>gst_registry_check_feature_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_registry_check_feature_version (<em class="parameter"><code><a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry</code></em>, |
| <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> *feature_name</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 a plugin feature by the given name exists in |
| <em class="parameter"><code>registry</code></em> and whether its version is at least the |
| version required. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature_name</code></em> :</span></p></td> |
| <td>the name of the feature (e.g. "oggdemux")</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>min_major</code></em> :</span></p></td> |
| <td>the minimum major version number</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>min_minor</code></em> :</span></p></td> |
| <td>the minimum minor version number</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>min_micro</code></em> :</span></p></td> |
| <td>the minimum micro version number</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 feature could be found and the version is |
| the same as the required version or newer, and <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><span class="type">FALSE</span></a> otherwise.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.signal-details"></a><h2>Signal Details</h2> |
| <div class="refsect2"> |
| <a name="GstRegistry-feature-added"></a><h3>The <code class="literal">"feature-added"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry, |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> *feature, |
| <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> |
| <p> |
| Signals that a feature has been added to the registry (possibly |
| replacing a previously-added one by the same name) |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry that emitted the signal</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>feature</code></em> :</span></p></td> |
| <td>the feature that has been added</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstRegistry-plugin-added"></a><h3>The <code class="literal">"plugin-added"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> *registry, |
| <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin, |
| <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> |
| <p> |
| Signals that a plugin has been added to the registry (possibly |
| replacing a previously-added one by the same name) |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>registry</code></em> :</span></p></td> |
| <td>the registry that emitted the signal</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>plugin</code></em> :</span></p></td> |
| <td>the plugin that has been added</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.see-also"></a><h2>See Also</h2> |
| <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a>, <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> |
| </div> |
| </div> |
| <div class="footer"> |
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