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| <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 class="gallery_image" valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1"> |
| <a name="GstRegistry.functions"></a><h2>Functions</h2> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="functions_return"> |
| <col class="functions_name"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="returnvalue">GstRegistry</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-get" title="gst_registry_get ()">gst_registry_get</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-get-feature-list" title="gst_registry_get_feature_list ()">gst_registry_get_feature_list</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <span class="returnvalue">guint32</span> |
| </td> |
| <td class="function_name"> |
| <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> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * |
| </td> |
| <td class="function_name"> |
| <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> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-get-plugin-list" title="gst_registry_get_plugin_list ()">gst_registry_get_plugin_list</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-add-plugin" title="gst_registry_add_plugin ()">gst_registry_add_plugin</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <span class="returnvalue">void</span> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-remove-plugin" title="gst_registry_remove_plugin ()">gst_registry_remove_plugin</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-plugin-filter" title="gst_registry_plugin_filter ()">gst_registry_plugin_filter</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-feature-filter" title="gst_registry_feature_filter ()">gst_registry_feature_filter</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="returnvalue">GstPlugin</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-find-plugin" title="gst_registry_find_plugin ()">gst_registry_find_plugin</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="returnvalue">GstPluginFeature</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-find-feature" title="gst_registry_find_feature ()">gst_registry_find_feature</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="returnvalue">GstPluginFeature</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-lookup-feature" title="gst_registry_lookup_feature ()">gst_registry_lookup_feature</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <span class="returnvalue">void</span> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-add-path" title="gst_registry_add_path ()">gst_registry_add_path</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-get-path-list" title="gst_registry_get_path_list ()">gst_registry_get_path_list</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-scan-path" title="gst_registry_scan_path ()">gst_registry_scan_path</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="returnvalue">GstPlugin</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-lookup" title="gst_registry_lookup ()">gst_registry_lookup</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <span class="returnvalue">void</span> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-remove-feature" title="gst_registry_remove_feature ()">gst_registry_remove_feature</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-add-feature" title="gst_registry_add_feature ()">gst_registry_add_feature</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstRegistry.html#gst-registry-check-feature-version" title="gst_registry_check_feature_version ()">gst_registry_check_feature_version</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.signals"></a><h2>Signals</h2> |
| <div class="informaltable"><table border="0"> |
| <colgroup> |
| <col width="150px" class="signals_return"> |
| <col width="300px" class="signals_name"> |
| <col width="200px" class="signals_flags"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="signal_type"><span class="returnvalue">void</span></td> |
| <td class="signal_name"><a class="link" href="GstRegistry.html#GstRegistry-feature-added" title="The “feature-added” signal">feature-added</a></td> |
| <td class="signal_flags"><a href="https://developer.gnome.org/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td> |
| </tr> |
| <tr> |
| <td class="signal_type"><span class="returnvalue">void</span></td> |
| <td class="signal_name"><a class="link" href="GstRegistry.html#GstRegistry-plugin-added" title="The “plugin-added” signal">plugin-added</a></td> |
| <td class="signal_flags"><a href="https://developer.gnome.org/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.other"></a><h2>Types and Values</h2> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="name"> |
| <col class="description"> |
| </colgroup> |
| <tbody><tr> |
| <td class="datatype_keyword">struct</td> |
| <td class="function_name"><a class="link" href="GstRegistry.html#GstRegistry-struct" title="struct GstRegistry">GstRegistry</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a> |
| <span class="lineart">╰──</span> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| <span class="lineart">╰──</span> <a class="link" href="GstObject.html" title="GstObject">GstObject</a> |
| <span class="lineart">╰──</span> GstRegistry |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.includes"></a><h2>Includes</h2> |
| <pre class="synopsis">#include <gst/gst.h> |
| </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" style="list-style-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">$XDG_DATA_HOME/gstreamer-$GST_API_VERSION/plugins/</code> |
| and <code class="filename">$prefix/libs/gstreamer-$GST_API_VERSION/</code>. |
| <a class="ulink" href="http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html" target="_top"> |
| <code class="filename">$XDG_DATA_HOME</code></a> defaults to |
| <code class="filename">$HOME/.local/share</code>. |
| </p></li> |
| </ul></div> |
| <p>The registry cache file is loaded from |
| <code class="filename">$XDG_CACHE_HOME/gstreamer-$GST_API_VERSION/registry-$ARCH.bin</code> |
| (where</p> |
| <a class="ulink" href="http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html" target="_top"> |
| <code class="filename">$XDG_CACHE_HOME</code></a> defaults to |
| <p><code class="filename">$HOME/.cache</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" style="list-style-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>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> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.functions_details"></a><h2>Functions</h2> |
| <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="refsect3"> |
| <a name="id-1.3.44.9.2.5"></a><h4>Returns</h4> |
| <p> the <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a>. </p> |
| <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p> |
| </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="https://developer.gnome.org/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="https://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre> |
| <p>Retrieves a <a href="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.3.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>type</p></td> |
| <td class="parameter_description"><p>a <a href="https://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a>.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.3.6"></a><h4>Returns</h4> |
| <p> a <a href="https://developer.gnome.org/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</p> |
| <p>MT safe. </p> |
| <p><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></p> |
| </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 registry's feature list cookie. This changes |
| every time a feature is added or removed from the registry.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.4.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody><tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.4.6"></a><h4>Returns</h4> |
| <p> the feature list cookie.</p> |
| </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="https://developer.gnome.org/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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre> |
| <p>Retrieves a <a href="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.5.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a>.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>name</p></td> |
| <td class="parameter_description"><p>a plugin name.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.5.6"></a><h4>Returns</h4> |
| <p> a <a href="https://developer.gnome.org/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. </p> |
| <p><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></p> |
| </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="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.6.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody><tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to search</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.6.6"></a><h4>Returns</h4> |
| <p> a <a href="https://developer.gnome.org/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.</p> |
| <p>MT safe. </p> |
| <p><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></p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-add-plugin"></a><h3>gst_registry_add_plugin ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.7.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to add the plugin to</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>plugin</p></td> |
| <td class="parameter_description"><p> the plugin to add. </p></td> |
| <td class="parameter_annotations"><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> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.7.6"></a><h4>Returns</h4> |
| <p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success.</p> |
| <p>MT safe.</p> |
| </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="refsect3"> |
| <a name="id-1.3.44.9.8.6"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to remove the plugin from</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>plugin</p></td> |
| <td class="parameter_description"><p> the plugin to remove. </p></td> |
| <td class="parameter_annotations"><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> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-plugin-filter"></a><h3>gst_registry_plugin_filter ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> first</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/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="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.9.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>registry to query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>filter</p></td> |
| <td class="parameter_description"><p> the filter to use. </p></td> |
| <td class="parameter_annotations"><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 class="parameter_name"><p>first</p></td> |
| <td class="parameter_description"><p>only return first match</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>user_data</p></td> |
| <td class="parameter_description"><p> user data passed to the filter function. </p></td> |
| <td class="parameter_annotations"><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> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.9.6"></a><h4>Returns</h4> |
| <p> a <a href="https://developer.gnome.org/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.</p> |
| <p>MT safe. </p> |
| <p><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></p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-feature-filter"></a><h3>gst_registry_feature_filter ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> first</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.10.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>registry to query</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>filter</p></td> |
| <td class="parameter_description"><p> the filter to use. </p></td> |
| <td class="parameter_annotations"><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 class="parameter_name"><p>first</p></td> |
| <td class="parameter_description"><p>only return first match</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>user_data</p></td> |
| <td class="parameter_description"><p> user data passed to the filter function. </p></td> |
| <td class="parameter_annotations"><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> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.10.6"></a><h4>Returns</h4> |
| <p> a <a href="https://developer.gnome.org/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.</p> |
| <p>MT safe. </p> |
| <p><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></p> |
| </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="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.11.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to search</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>name</p></td> |
| <td class="parameter_description"><p>the plugin name to find</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.11.6"></a><h4>Returns</h4> |
| <p> the plugin with the given name |
| or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> 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.</p> |
| <p>MT safe. </p> |
| <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p> |
| </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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.12.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to search</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>name</p></td> |
| <td class="parameter_description"><p>the pluginfeature name to find</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>type</p></td> |
| <td class="parameter_description"><p>the pluginfeature type to find</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.12.6"></a><h4>Returns</h4> |
| <p> the pluginfeature with the |
| given name and type or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> 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.</p> |
| <p>MT safe. </p> |
| <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p> |
| </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="refsect3"> |
| <a name="id-1.3.44.9.13.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>name</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstPluginFeature.html" title="GstPluginFeature"><span class="type">GstPluginFeature</span></a> name</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.13.6"></a><h4>Returns</h4> |
| <p> 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.</p> |
| <p>MT safe. </p> |
| <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-add-path"></a><h3>gst_registry_add_path ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_registry_add_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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *path</code></em>);</pre> |
| <p>Add the given path to the registry. The syntax of the |
| path is specific to the registry. If the path has already been |
| added, do nothing.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.14.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to add the path to</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>path</p></td> |
| <td class="parameter_description"><p>the path to add to the registry</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-get-path-list"></a><h3>gst_registry_get_path_list ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * |
| gst_registry_get_path_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 the list of paths for the given registry.</p> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.15.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody><tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to get the pathlist of</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.15.6"></a><h4>Returns</h4> |
| <p> A <a href="https://developer.gnome.org/glib/unstable/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of paths as |
| strings. g_list_free after use.</p> |
| <p>MT safe. </p> |
| <p><span class="annotation">[<acronym title="Free data container after the code is done."><span class="acronym">transfer container</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> char*]</span></p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-scan-path"></a><h3>gst_registry_scan_path ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/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="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.16.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to add found plugins to</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>path</p></td> |
| <td class="parameter_description"><p>the path to scan</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.16.6"></a><h4>Returns</h4> |
| <p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if registry changed</p> |
| </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="refsect3"> |
| <a name="id-1.3.44.9.17.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to look up in</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>filename</p></td> |
| <td class="parameter_description"><p>the name of the file to look up</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.17.6"></a><h4>Returns</h4> |
| <p> the <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> if found, or |
| <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> 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. </p> |
| <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p> |
| </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="refsect3"> |
| <a name="id-1.3.44.9.18.6"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to remove the feature from</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>feature</p></td> |
| <td class="parameter_description"><p> the feature to remove. </p></td> |
| <td class="parameter_annotations"><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> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-registry-add-feature"></a><h3>gst_registry_add_feature ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.19.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry to add the plugin to</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>feature</p></td> |
| <td class="parameter_description"><p> the feature to add. </p></td> |
| <td class="parameter_annotations"><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> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.19.6"></a><h4>Returns</h4> |
| <p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success.</p> |
| <p>MT safe.</p> |
| </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="https://developer.gnome.org/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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *feature_name</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> min_major</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> min_minor</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/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="refsect3"> |
| <a name="id-1.3.44.9.20.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>feature_name</p></td> |
| <td class="parameter_description"><p>the name of the feature (e.g. "oggdemux")</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>min_major</p></td> |
| <td class="parameter_description"><p>the minimum major version number</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>min_minor</p></td> |
| <td class="parameter_description"><p>the minimum minor version number</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>min_micro</p></td> |
| <td class="parameter_description"><p>the minimum micro version number</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.3.44.9.20.6"></a><h4>Returns</h4> |
| <p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the feature could be found and the version is |
| the same as the required version or newer, and <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.other_details"></a><h2>Types and Values</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> |
| </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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</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="refsect3"> |
| <a name="id-1.3.44.11.2.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry that emitted the signal</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>feature</p></td> |
| <td class="parameter_description"><p>the feature that has been added</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>user_data</p></td> |
| <td class="parameter_description"><p>user data set when the signal handler was connected.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <p>Flags: <a href="https://developer.gnome.org/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p> |
| </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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</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="refsect3"> |
| <a name="id-1.3.44.11.3.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>registry</p></td> |
| <td class="parameter_description"><p>the registry that emitted the signal</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>plugin</p></td> |
| <td class="parameter_description"><p>the plugin that has been added</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>user_data</p></td> |
| <td class="parameter_description"><p>user data set when the signal handler was connected.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <p>Flags: <a href="https://developer.gnome.org/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstRegistry.see-also"></a><h2>See Also</h2> |
| <p><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></p> |
| </div> |
| </div> |
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