/**
* SECTION:gstregistry
+ * @title: GstRegistry
* @short_description: Abstract base class for management of #GstPlugin objects
* @see_also: #GstPlugin, #GstPluginFeature
*
*
* On startup, plugins are searched for in the plugin search path. The following
* locations are checked in this order:
- * <itemizedlist>
- * <listitem>
- * <para>location from --gst-plugin-path commandline option.</para>
- * </listitem>
- * <listitem>
- * <para>the GST_PLUGIN_PATH environment variable.</para>
- * </listitem>
- * <listitem>
- * <para>the GST_PLUGIN_SYSTEM_PATH environment variable.</para>
- * </listitem>
- * <listitem>
- * <para>default locations (if GST_PLUGIN_SYSTEM_PATH is not set). Those
- * default locations are:
- * <filename>$XDG_DATA_HOME/gstreamer-$GST_API_VERSION/plugins/</filename>
- * and <filename>$prefix/libs/gstreamer-$GST_API_VERSION/</filename>.
- * <ulink url="http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html">
- * <filename>$XDG_DATA_HOME</filename></ulink> defaults to
- * <filename>$HOME/.local/share</filename>.
- * </para>
- * </listitem>
- * </itemizedlist>
+ *
+ * * location from --gst-plugin-path commandline option.
+ * * the GST_PLUGIN_PATH environment variable.
+ * * the GST_PLUGIN_SYSTEM_PATH environment variable.
+ * * default locations (if GST_PLUGIN_SYSTEM_PATH is not set).
+ * Those default locations are:
+ * `$XDG_DATA_HOME/gstreamer-$GST_API_VERSION/plugins/`
+ * and `$prefix/libs/gstreamer-$GST_API_VERSION/`.
+ * [$XDG_DATA_HOME](http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html) defaults to
+ * `$HOME/.local/share`.
+ *
* The registry cache file is loaded from
- * <filename>$XDG_CACHE_HOME/gstreamer-$GST_API_VERSION/registry-$ARCH.bin</filename>
- * (where
- * <ulink url="http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html">
- * <filename>$XDG_CACHE_HOME</filename></ulink> defaults to
- * <filename>$HOME/.cache</filename>) or the file listed in the GST_REGISTRY
+ * `$XDG_CACHE_HOME/gstreamer-$GST_API_VERSION/registry-$ARCH.bin`
+ * (where $XDG_CACHE_HOME defaults to `$HOME/.cache`) or the file listed in the `GST_REGISTRY`
* env var. One reason to change the registry location is for testing.
*
* For each plugin that is found in the plugin search path, there could be 3
* possibilities for cached information:
- * <itemizedlist>
- * <listitem>
- * <para>the cache may not contain information about a given file.</para>
- * </listitem>
- * <listitem>
- * <para>the cache may have stale information.</para>
- * </listitem>
- * <listitem>
- * <para>the cache may have current information.</para>
- * </listitem>
- * </itemizedlist>
+ *
+ * * the cache may not contain information about a given file.
+ * * the cache may have stale information.
+ * * the cache may have current information.
*
* 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
* checked to make sure the information is minimally valid. If not, the entry is
* simply dropped.
*
- * <emphasis role="bold">Implementation notes:</emphasis>
+ * ## Implementation notes:
*
* The "cache" and "registry" are different concepts and can represent
* different sets of plugins. For various reasons, at init time, the cache is
GList *plugins;
GList *features;
+ guint n_plugins;
#if 0
GList *paths;
#endif
extern GSList *_priv_gst_preload_plugins;
#ifndef GST_DISABLE_REGISTRY
+/* Set to TRUE to disable registry, behaves similar to GST_DISABLE_REGISTRY */
+gboolean _priv_gst_disable_registry = FALSE;
/*set to TRUE when registry needn't to be updated */
gboolean _priv_gst_disable_registry_update = FALSE;
extern GList *_priv_gst_plugin_paths;
plugins = registry->priv->plugins;
registry->priv->plugins = NULL;
+ registry->priv->n_plugins = 0;
GST_DEBUG_OBJECT (registry, "registry finalize");
p = plugins;
}
registry->priv->plugins =
g_list_remove (registry->priv->plugins, existing_plugin);
+ --registry->priv->n_plugins;
if (G_LIKELY (existing_plugin->basename))
g_hash_table_remove (registry->priv->basename_hash,
existing_plugin->basename);
plugin, GST_STR_NULL (plugin->filename));
registry->priv->plugins = g_list_prepend (registry->priv->plugins, plugin);
+ ++registry->priv->n_plugins;
+
if (G_LIKELY (plugin->basename))
g_hash_table_replace (registry->priv->basename_hash, plugin->basename,
plugin);
GST_OBJECT_LOCK (registry);
registry->priv->plugins = g_list_remove (registry->priv->plugins, plugin);
+ --registry->priv->n_plugins;
if (G_LIKELY (plugin->basename))
g_hash_table_remove (registry->priv->basename_hash, plugin->basename);
gst_registry_remove_features_for_plugin_unlocked (registry, plugin);
gst_registry_plugin_filter (GstRegistry * registry,
GstPluginFilter filter, gboolean first, gpointer user_data)
{
- GList *list = NULL;
+ GstPlugin **plugins;
+ GList *walk, *list = NULL;
+ guint n_plugins, i;
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
GST_OBJECT_LOCK (registry);
- {
- const GList *walk;
-
- for (walk = registry->priv->plugins; walk != NULL; walk = walk->next) {
- GstPlugin *plugin = walk->data;
+ n_plugins = registry->priv->n_plugins;
+ plugins = g_newa (GstPlugin *, n_plugins + 1);
+ for (walk = registry->priv->plugins, i = 0; walk != NULL; walk = walk->next)
+ plugins[i++] = gst_object_ref (walk->data);
+ GST_OBJECT_UNLOCK (registry);
- if (filter == NULL || filter (plugin, user_data)) {
- list = g_list_prepend (list, gst_object_ref (plugin));
+ for (i = 0; i < n_plugins; ++i) {
+ if (filter == NULL || filter (plugins[i], user_data)) {
+ list = g_list_prepend (list, gst_object_ref (plugins[i]));
- if (first)
- break;
- }
+ if (first)
+ break;
}
}
- GST_OBJECT_UNLOCK (registry);
+
+ for (i = 0; i < n_plugins; ++i)
+ gst_object_unref (plugins[i]);
return list;
}
gst_registry_feature_filter (GstRegistry * registry,
GstPluginFeatureFilter filter, gboolean first, gpointer user_data)
{
- GList *list = NULL;
+ GstPluginFeature **features;
+ GList *walk, *list = NULL;
+ guint n_features, i;
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
GST_OBJECT_LOCK (registry);
- {
- const GList *walk;
-
- for (walk = registry->priv->features; walk != NULL; walk = walk->next) {
- GstPluginFeature *feature = walk->data;
+ n_features = g_hash_table_size (registry->priv->feature_hash);
+ features = g_newa (GstPluginFeature *, n_features + 1);
+ for (walk = registry->priv->features, i = 0; walk != NULL; walk = walk->next)
+ features[i++] = gst_object_ref (walk->data);
+ GST_OBJECT_UNLOCK (registry);
- if (filter == NULL || filter (feature, user_data)) {
- list = g_list_prepend (list, gst_object_ref (feature));
+ for (i = 0; i < n_features; ++i) {
+ if (filter == NULL || filter (features[i], user_data)) {
+ list = g_list_prepend (list, gst_object_ref (features[i]));
- if (first)
- break;
- }
+ if (first)
+ break;
}
}
- GST_OBJECT_UNLOCK (registry);
+
+ for (i = 0; i < n_features; ++i)
+ gst_object_unref (features[i]);
return list;
}
GST_DEBUG_OBJECT (registry, "removing cached plugin \"%s\"",
GST_STR_NULL (plugin->filename));
registry->priv->plugins = g_list_delete_link (registry->priv->plugins, g);
+ --registry->priv->n_plugins;
if (G_LIKELY (plugin->basename))
g_hash_table_remove (registry->priv->basename_hash, plugin->basename);
gst_registry_remove_features_for_plugin_unlocked (registry, plugin);
gboolean res;
#ifndef GST_DISABLE_REGISTRY
- GError *err = NULL;
+ if (!_priv_gst_disable_registry) {
+ GError *err = NULL;
- res = ensure_current_registry (&err);
- if (err) {
- GST_WARNING ("registry update failed: %s", err->message);
- g_error_free (err);
+ res = ensure_current_registry (&err);
+ if (err) {
+ GST_WARNING ("registry update failed: %s", err->message);
+ g_error_free (err);
+ } else {
+ GST_LOG ("registry update succeeded");
+ }
} else {
- GST_LOG ("registry update succeeded");
+ GST_INFO ("registry update disabled by environment");
+ res = TRUE;
}
#else
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