diff --git a/gst/gstregistry.c b/gst/gstregistry.c
index dd873da135f364bcfe1e5d3d139f69f3085db5fb..79745353b7ec4ae907e6245e6285fb994ff0eec0 100644 (file)
--- a/gst/gstregistry.c
+++ b/gst/gstregistry.c
* @see_also: #GstPlugin, #GstPluginFeature
*
* One registry holds the metadata of a set of plugins.
- * All registries build the #GstRegistryPool.
+ *
+ * <emphasis role="bold">Design:</emphasis>
+ *
+ * The #GstRegistry object is a list of plugins and some functions for dealing
+ * with them. Each #GstPlugin is matched 1-1 with a file on disk, and may or may
+ * not be loaded at a given time. There may be multiple #GstRegistry objects,
+ * but the "default registry" is the only object that has any meaning to the
+ * core.
+ *
+ * The registry file is actually a cache of plugin information. This is
+ * unlike versions prior to 0.10, where the registry file was the primary source
+ * of plugin information, and was created by the gst-register command.
+ *
+ * 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.
+ *
+ * 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>~/.gstreamer-$GST_MAJORMINOR/plugins/</filename>
+ * and <filename>$prefix/libs/gstreamer-$GST_MAJORMINOR/</filename>.
+ * </para>
+ * </listitem>
+ * </itemizedlist>
+ * The registry cache file is loaded from
+ * <filename>~/.gstreamer-$GST_MAJORMINOR/registry-$ARCH.bin</filename> 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>
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * <emphasis role="bold">Implementation notes:</emphasis>
+ *
+ * The "cache" and "default 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 %GST_PLUGIN_FLAG_CACHED bit. These plugins are
+ * removed at the end of initialization.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
+#include "gstconfig.h"
#include "gst_private.h"
#include <glib.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
+/* For g_stat () */
+#include <glib/gstdio.h>
#include "gstinfo.h"
+#include "gsterror.h"
#include "gstregistry.h"
#include "gstmarshal.h"
#include "gstfilter.h"
+#include "gstpluginloader.h"
+
+#include "gst-i18n-lib.h"
+
+#include "gst.h"
+#include "glib-compat-private.h"
+
+#ifdef G_OS_WIN32
+#include <windows.h>
+extern HMODULE _priv_gst_dll_handle;
+#endif
+
#define GST_CAT_DEFAULT GST_CAT_REGISTRY
-/* the one instance of the default registry */
+struct _GstRegistryPrivate
+{
+ /* updated whenever the feature list changes */
+ guint32 cookie;
+ /* speedup for searching features */
+ GList *element_factory_list;
+ guint32 efl_cookie;
+ GList *typefind_factory_list;
+ guint32 tfl_cookie;
+};
+
+/* the one instance of the default registry and the mutex protecting the
+ * variable. */
+static GStaticMutex _gst_registry_mutex = G_STATIC_MUTEX_INIT;
static GstRegistry *_gst_registry_default = NULL;
-/*
- * Design:
- *
- * The GstRegistry object is a list of plugins and some functions
- * for dealing with them. Plugins are matched 1-1 with a file on
- * disk, and may or may not be loaded at a given time. There may
- * be multiple GstRegistry objects, but the "default registry" is
- * the only object that has any meaning to the core.
- *
- * The registry.xml file in 0.9 is actually a cache of plugin
- * information. This is unlike previous versions, where the registry
- * file was the primary source of plugin information, and was created
- * by the gst-register command.
- *
- * In 0.9, 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.xml file.
- *
- * On startup, plugins are searched for in the plugin search path.
- * This path can be set directly using the GST_PLUGIN_PATH
- * environment variable. The registry file is loaded from
- * ~/.gstreamer-0.9/registry.xml or the file listed in the
- * GST_REGISTRY env var. The only 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:
- * - 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 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.
- *
- * 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.
- *
- * Implementation notes:
- *
- * The "cache" and "default 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
- * GST_PLUGIN_FLAG_CACHED bit. These plugins are removed at the
- * end of intitialization.
- *
- */
+/* defaults */
+#define DEFAULT_FORK TRUE
+
+/* control the behaviour of registry rebuild */
+static gboolean _gst_enable_registry_fork = DEFAULT_FORK;
+/* List of plugins that need preloading/reloading after scanning registry */
+extern GSList *_priv_gst_preload_plugins;
+
+#ifndef GST_DISABLE_REGISTRY
+/*set to TRUE when registry needn't to be updated */
+gboolean _priv_gst_disable_registry_update = FALSE;
+extern GList *_priv_gst_plugin_paths;
+
+/* Set to TRUE when the registry cache should be disabled */
+gboolean _gst_disable_registry_cache = FALSE;
+
+static gboolean __registry_reuse_plugin_scanner = TRUE;
+#endif
/* Element signals and args */
enum
LAST_SIGNAL
};
-static void gst_registry_class_init (GstRegistryClass * klass);
-static void gst_registry_init (GstRegistry * registry);
static void gst_registry_finalize (GObject * object);
static guint gst_registry_signals[LAST_SIGNAL] = { 0 };
static GstPluginFeature *gst_registry_lookup_feature_locked (GstRegistry *
registry, const char *name);
-static GstPlugin *gst_registry_lookup_locked (GstRegistry * registry,
- const char *filename);
+static GstPlugin *gst_registry_lookup_bn_locked (GstRegistry * registry,
+ const char *basename);
G_DEFINE_TYPE (GstRegistry, gst_registry, GST_TYPE_OBJECT);
static GstObjectClass *parent_class = NULL;
gobject_class = (GObjectClass *) klass;
- parent_class = g_type_class_ref (GST_TYPE_OBJECT);
-
+ parent_class = g_type_class_peek_parent (klass);
+ g_type_class_add_private (klass, sizeof (GstRegistryPrivate));
+
+ /**
+ * GstRegistry::plugin-added:
+ * @registry: the registry that emitted the signal
+ * @plugin: the plugin that has been added
+ *
+ * Signals that a plugin has been added to the registry (possibly
+ * replacing a previously-added one by the same name)
+ */
gst_registry_signals[PLUGIN_ADDED] =
g_signal_new ("plugin-added", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRegistryClass, plugin_added), NULL,
NULL, gst_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER);
+
+ /**
+ * GstRegistry::feature-added:
+ * @registry: the registry that emitted the signal
+ * @feature: the feature that has been added
+ *
+ * Signals that a feature has been added to the registry (possibly
+ * replacing a previously-added one by the same name)
+ */
gst_registry_signals[FEATURE_ADDED] =
g_signal_new ("feature-added", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRegistryClass, feature_added),
NULL, NULL, gst_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER);
- gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_registry_finalize);
+ gobject_class->finalize = gst_registry_finalize;
}
static void
gst_registry_init (GstRegistry * registry)
{
+ registry->feature_hash = g_hash_table_new (g_str_hash, g_str_equal);
+ registry->basename_hash = g_hash_table_new (g_str_hash, g_str_equal);
+ registry->priv =
+ G_TYPE_INSTANCE_GET_PRIVATE (registry, GST_TYPE_REGISTRY,
+ GstRegistryPrivate);
}
static void
GstPlugin *plugin = p->data;
if (plugin) {
- GST_DEBUG_OBJECT (registry, "removing plugin %s",
+ GST_LOG_OBJECT (registry, "removing plugin %s",
gst_plugin_get_name (plugin));
- gst_registry_remove_plugin (registry, plugin);
+ gst_object_unref (plugin);
}
p = g_list_next (p);
}
GstPluginFeature *feature = f->data;
if (feature) {
- gst_registry_remove_feature (registry, feature);
+ GST_LOG_OBJECT (registry, "removing feature %p (%s)",
+ feature, gst_plugin_feature_get_name (feature));
+ gst_object_unparent (GST_OBJECT_CAST (feature));
}
f = g_list_next (f);
}
g_list_free (features);
+ g_hash_table_destroy (registry->feature_hash);
+ registry->feature_hash = NULL;
+ g_hash_table_destroy (registry->basename_hash);
+ registry->basename_hash = NULL;
+
+ if (registry->priv->element_factory_list) {
+ GST_DEBUG_OBJECT (registry, "Cleaning up cached element factory list");
+ gst_plugin_feature_list_free (registry->priv->element_factory_list);
+ }
+
+ if (registry->priv->typefind_factory_list) {
+ GST_DEBUG_OBJECT (registry, "Cleaning up cached typefind factory list");
+ gst_plugin_feature_list_free (registry->priv->typefind_factory_list);
+ }
G_OBJECT_CLASS (parent_class)->finalize (object);
}
* Retrieves the default registry. The caller does not own a reference on the
* registry, as it is alive as long as GStreamer is initialized.
*
- * Returns: The default #GstRegistry.
+ * Returns: (transfer none): The default #GstRegistry.
*/
GstRegistry *
gst_registry_get_default (void)
{
- if (!_gst_registry_default) {
- _gst_registry_default = g_object_new (GST_TYPE_REGISTRY, NULL);
+ GstRegistry *registry;
+
+ g_static_mutex_lock (&_gst_registry_mutex);
+ if (G_UNLIKELY (!_gst_registry_default)) {
+ _gst_registry_default = g_object_newv (GST_TYPE_REGISTRY, 0, NULL);
+ gst_object_ref_sink (GST_OBJECT_CAST (_gst_registry_default));
}
- return _gst_registry_default;
+ registry = _gst_registry_default;
+ g_static_mutex_unlock (&_gst_registry_mutex);
+
+ return registry;
}
/**
*
* Get the list of paths for the given registry.
*
- * Returns: A Glist of paths as strings. g_list_free after use.
+ * Returns: (transfer container) (element-type char*): A #GList of paths as
+ * strings. g_list_free after use.
*
* MT safe.
*/
/**
* gst_registry_add_plugin:
* @registry: the registry to add the plugin to
- * @plugin: the plugin to add
+ * @plugin: (transfer full): the plugin to add
*
* Add the plugin to the registry. The plugin-added signal will be emitted.
* This function will sink @plugin.
GstPlugin *existing_plugin;
g_return_val_if_fail (GST_IS_REGISTRY (registry), FALSE);
+ g_return_val_if_fail (GST_IS_PLUGIN (plugin), FALSE);
GST_OBJECT_LOCK (registry);
- existing_plugin = gst_registry_lookup_locked (registry, plugin->filename);
- if (existing_plugin) {
- GST_DEBUG_OBJECT (registry,
- "Replacing existing plugin %p with new plugin %p for filename \"%s\"",
- existing_plugin, plugin, GST_STR_NULL (plugin->filename));
- registry->plugins = g_list_remove (registry->plugins, existing_plugin);
- gst_object_unref (existing_plugin);
+ if (G_LIKELY (plugin->basename)) {
+ /* we have a basename, see if we find the plugin */
+ existing_plugin =
+ gst_registry_lookup_bn_locked (registry, plugin->basename);
+ if (existing_plugin) {
+ GST_DEBUG_OBJECT (registry,
+ "Replacing existing plugin \"%s\" %p with new plugin %p for filename \"%s\"",
+ GST_STR_NULL (existing_plugin->filename), existing_plugin, plugin,
+ GST_STR_NULL (plugin->filename));
+ /* If the new plugin is blacklisted and the existing one isn't cached, do not
+ * accept if it's from a different location than the existing one */
+ if ((plugin->flags & GST_PLUGIN_FLAG_BLACKLISTED) &&
+ strcmp (plugin->filename, existing_plugin->filename)) {
+ GST_WARNING_OBJECT (registry,
+ "Not replacing plugin because new one (%s) is blacklisted but for a different location than existing one (%s)",
+ plugin->filename, existing_plugin->filename);
+ gst_object_unref (plugin);
+ GST_OBJECT_UNLOCK (registry);
+ return FALSE;
+ }
+ registry->plugins = g_list_remove (registry->plugins, existing_plugin);
+ if (G_LIKELY (existing_plugin->basename))
+ g_hash_table_remove (registry->basename_hash,
+ existing_plugin->basename);
+ gst_object_unref (existing_plugin);
+ }
}
GST_DEBUG_OBJECT (registry, "adding plugin %p for filename \"%s\"",
plugin, GST_STR_NULL (plugin->filename));
registry->plugins = g_list_prepend (registry->plugins, plugin);
+ if (G_LIKELY (plugin->basename))
+ g_hash_table_replace (registry->basename_hash, plugin->basename, plugin);
- gst_object_ref (plugin);
- gst_object_sink (plugin);
+ gst_object_ref_sink (plugin);
GST_OBJECT_UNLOCK (registry);
- GST_DEBUG_OBJECT (registry, "emitting plugin-added for filename \"%s\"",
+ GST_LOG_OBJECT (registry, "emitting plugin-added for filename \"%s\"",
GST_STR_NULL (plugin->filename));
- g_signal_emit (G_OBJECT (registry), gst_registry_signals[PLUGIN_ADDED], 0,
- plugin);
+ g_signal_emit (registry, gst_registry_signals[PLUGIN_ADDED], 0, plugin);
return TRUE;
}
+static void
+gst_registry_remove_features_for_plugin_unlocked (GstRegistry * registry,
+ GstPlugin * plugin)
+{
+ GList *f;
+
+ g_return_if_fail (GST_IS_REGISTRY (registry));
+ g_return_if_fail (GST_IS_PLUGIN (plugin));
+
+ /* Remove all features for this plugin */
+ f = registry->features;
+ while (f != NULL) {
+ GList *next = g_list_next (f);
+ GstPluginFeature *feature = f->data;
+
+ if (G_UNLIKELY (feature && feature->plugin == plugin)) {
+ GST_DEBUG_OBJECT (registry, "removing feature %p (%s) for plugin %p (%s)",
+ feature, gst_plugin_feature_get_name (feature), plugin,
+ plugin->desc.name);
+
+ registry->features = g_list_delete_link (registry->features, f);
+ g_hash_table_remove (registry->feature_hash, feature->name);
+ gst_object_unparent (GST_OBJECT_CAST (feature));
+ }
+ f = next;
+ }
+ registry->priv->cookie++;
+}
+
/**
* gst_registry_remove_plugin:
* @registry: the registry to remove the plugin from
- * @plugin: the plugin to remove
+ * @plugin: (transfer none): the plugin to remove
*
* Remove the plugin from the registry.
*
gst_registry_remove_plugin (GstRegistry * registry, GstPlugin * plugin)
{
g_return_if_fail (GST_IS_REGISTRY (registry));
+ g_return_if_fail (GST_IS_PLUGIN (plugin));
+
+ GST_DEBUG_OBJECT (registry, "removing plugin %p (%s)",
+ plugin, gst_plugin_get_name (plugin));
GST_OBJECT_LOCK (registry);
registry->plugins = g_list_remove (registry->plugins, plugin);
+ if (G_LIKELY (plugin->basename))
+ g_hash_table_remove (registry->basename_hash, plugin->basename);
+ gst_registry_remove_features_for_plugin_unlocked (registry, plugin);
GST_OBJECT_UNLOCK (registry);
gst_object_unref (plugin);
}
/**
* gst_registry_add_feature:
* @registry: the registry to add the plugin to
- * @feature: the feature to add
+ * @feature: (transfer full): the feature to add
*
* Add the feature to the registry. The feature-added signal will be emitted.
* This function sinks @feature.
GST_OBJECT_LOCK (registry);
existing_feature = gst_registry_lookup_feature_locked (registry,
feature->name);
- if (existing_feature) {
- GST_DEBUG_OBJECT (registry, "Replacing existing feature %p (%s)",
+ if (G_UNLIKELY (existing_feature)) {
+ GST_DEBUG_OBJECT (registry, "replacing existing feature %p (%s)",
existing_feature, feature->name);
+ /* Remove the existing feature from the list now, before we insert the new
+ * one, but don't unref yet because the hash is still storing a reference to
+ * it. */
registry->features = g_list_remove (registry->features, existing_feature);
- gst_object_unref (existing_feature);
}
GST_DEBUG_OBJECT (registry, "adding feature %p (%s)", feature, feature->name);
registry->features = g_list_prepend (registry->features, feature);
+ g_hash_table_replace (registry->feature_hash, feature->name, feature);
- gst_object_ref (feature);
- gst_object_sink (feature);
+ if (G_UNLIKELY (existing_feature)) {
+ /* We unref now. No need to remove the feature name from the hash table, it
+ * got replaced by the new feature */
+ gst_object_unparent (GST_OBJECT_CAST (existing_feature));
+ }
+
+ gst_object_set_parent (GST_OBJECT_CAST (feature), GST_OBJECT_CAST (registry));
+
+ registry->priv->cookie++;
GST_OBJECT_UNLOCK (registry);
- GST_DEBUG_OBJECT (registry, "emitting feature-added for %s", feature->name);
- g_signal_emit (G_OBJECT (registry), gst_registry_signals[FEATURE_ADDED], 0,
- feature);
+ GST_LOG_OBJECT (registry, "emitting feature-added for %s", feature->name);
+ g_signal_emit (registry, gst_registry_signals[FEATURE_ADDED], 0, feature);
return TRUE;
}
/**
* gst_registry_remove_feature:
* @registry: the registry to remove the feature from
- * @feature: the feature to remove
+ * @feature: (transfer none): the feature to remove
*
* Remove the feature from the registry.
*
gst_registry_remove_feature (GstRegistry * registry, GstPluginFeature * feature)
{
g_return_if_fail (GST_IS_REGISTRY (registry));
+ g_return_if_fail (GST_IS_PLUGIN_FEATURE (feature));
+
GST_DEBUG_OBJECT (registry, "removing feature %p (%s)",
feature, gst_plugin_feature_get_name (feature));
GST_OBJECT_LOCK (registry);
registry->features = g_list_remove (registry->features, feature);
+ g_hash_table_remove (registry->feature_hash, feature->name);
+ registry->priv->cookie++;
GST_OBJECT_UNLOCK (registry);
- gst_object_unref (feature);
+
+ gst_object_unparent ((GstObject *) feature);
}
/**
* gst_registry_plugin_filter:
* @registry: registry to query
- * @filter: the filter to use
+ * @filter: (scope call): the filter to use
* @first: only return first match
- * @user_data: user data passed to the filter function
+ * @user_data: (closure): user data passed to the filter function
*
* Runs a filter against all plugins in the registry and returns a #GList with
* the results. If the first flag is set, only the first match is
@@ -434,7 +617,8 @@ gst_registry_remove_feature (GstRegistry * registry, GstPluginFeature * feature)
* Every plugin is reffed; use gst_plugin_list_free() after use, which
* will unref again.
*
- * Returns: a #GList of #GstPlugin. Use gst_plugin_list_free() after usage.
+ * Returns: (transfer full) (element-type Gst.Plugin): a #GList of #GstPlugin.
+ * Use gst_plugin_list_free() after usage.
*
* MT safe.
*/
gst_registry_plugin_filter (GstRegistry * registry,
GstPluginFilter filter, gboolean first, gpointer user_data)
{
- GList *list;
- GList *g;
+ GList *list = NULL;
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
GST_OBJECT_LOCK (registry);
- list = gst_filter_run (registry->plugins, (GstFilterFunc) filter, first,
- user_data);
- for (g = list; g; g = g->next) {
- gst_object_ref (GST_PLUGIN (g->data));
+ {
+ const GList *walk;
+
+ for (walk = registry->plugins; walk != NULL; walk = walk->next) {
+ GstPlugin *plugin = walk->data;
+
+ if (filter == NULL || filter (plugin, user_data)) {
+ list = g_list_prepend (list, gst_object_ref (plugin));
+
+ if (first)
+ break;
+ }
+ }
}
GST_OBJECT_UNLOCK (registry);
return list;
}
+#ifdef GST_DISABLE_DEPRECATED
+typedef struct
+{
+ const gchar *name;
+ GType type;
+} GstTypeNameData;
+static gboolean
+gst_plugin_feature_type_name_filter (GstPluginFeature * feature,
+ GstTypeNameData * data)
+{
+ g_assert (GST_IS_PLUGIN_FEATURE (feature));
+
+ return ((data->type == 0 || data->type == G_OBJECT_TYPE (feature)) &&
+ (data->name == NULL
+ || !strcmp (data->name, GST_PLUGIN_FEATURE_NAME (feature))));
+}
+#endif
+
+/* returns TRUE if the list was changed
+ *
+ * Must be called with the object lock taken */
+static gboolean
+gst_registry_get_feature_list_or_create (GstRegistry * registry,
+ GList ** previous, guint32 * cookie, GType type)
+{
+ gboolean res = FALSE;
+ GstRegistryPrivate *priv = registry->priv;
+
+ if (G_UNLIKELY (!*previous || priv->cookie != *cookie)) {
+ GstTypeNameData data;
+ const GList *walk;
+
+ if (*previous) {
+ gst_plugin_feature_list_free (*previous);
+ *previous = NULL;
+ }
+
+ data.type = type;
+ data.name = NULL;
+
+ for (walk = registry->features; walk != NULL; walk = walk->next) {
+ GstPluginFeature *feature = walk->data;
+
+ if (gst_plugin_feature_type_name_filter (feature, &data)) {
+ *previous = g_list_prepend (*previous, gst_object_ref (feature));
+ }
+ }
+
+ *cookie = priv->cookie;
+ res = TRUE;
+ }
+
+ return res;
+}
+
+static gint
+type_find_factory_rank_cmp (const GstPluginFeature * fac1,
+ const GstPluginFeature * fac2)
+{
+ if (G_LIKELY (fac1->rank != fac2->rank))
+ return fac2->rank - fac1->rank;
+
+ /* to make the order in which things happen more deterministic,
+ * sort by name when the ranks are the same. */
+ return strcmp (fac1->name, fac2->name);
+}
+
+static GList *
+gst_registry_get_element_factory_list (GstRegistry * registry)
+{
+ GList *list;
+
+ GST_OBJECT_LOCK (registry);
+
+ gst_registry_get_feature_list_or_create (registry,
+ ®istry->priv->element_factory_list, ®istry->priv->efl_cookie,
+ GST_TYPE_ELEMENT_FACTORY);
+
+ /* Return reffed copy */
+ list = gst_plugin_feature_list_copy (registry->priv->element_factory_list);
+
+ GST_OBJECT_UNLOCK (registry);
+
+ return list;
+}
+
+static GList *
+gst_registry_get_typefind_factory_list (GstRegistry * registry)
+{
+ GList *list;
+
+ GST_OBJECT_LOCK (registry);
+
+ if (G_UNLIKELY (gst_registry_get_feature_list_or_create (registry,
+ ®istry->priv->typefind_factory_list,
+ ®istry->priv->tfl_cookie, GST_TYPE_TYPE_FIND_FACTORY)))
+ registry->priv->typefind_factory_list =
+ g_list_sort (registry->priv->typefind_factory_list,
+ (GCompareFunc) type_find_factory_rank_cmp);
+
+ /* Return reffed copy */
+ list = gst_plugin_feature_list_copy (registry->priv->typefind_factory_list);
+
+ GST_OBJECT_UNLOCK (registry);
+
+ return list;
+}
+
/**
* gst_registry_feature_filter:
* @registry: registry to query
- * @filter: the filter to use
+ * @filter: (scope call): the filter to use
* @first: only return first match
- * @user_data: user data passed to the filter function
+ * @user_data: (closure): user data passed to the filter function
*
* 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).
*
- * Returns: a GList of plugin features, gst_plugin_feature_list_free after use.
+ * Returns: (transfer full) (element-type Gst.PluginFeature): a #GList of
+ * #GstPluginFeature. Use gst_plugin_feature_list_free() after usage.
*
* MT safe.
*/
gst_registry_feature_filter (GstRegistry * registry,
GstPluginFeatureFilter filter, gboolean first, gpointer user_data)
{
- GList *list;
- GList *g;
+ GList *list = NULL;
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
GST_OBJECT_LOCK (registry);
- list = gst_filter_run (registry->features, (GstFilterFunc) filter, first,
- user_data);
- for (g = list; g; g = g->next) {
- gst_object_ref (GST_PLUGIN_FEATURE (g->data));
+ {
+ const GList *walk;
+
+ for (walk = registry->features; walk != NULL; walk = walk->next) {
+ GstPluginFeature *feature = walk->data;
+
+ if (filter == NULL || filter (feature, user_data)) {
+ list = g_list_prepend (list, gst_object_ref (feature));
+
+ if (first)
+ break;
+ }
+ }
}
GST_OBJECT_UNLOCK (registry);
* Find the plugin with the given name in the registry.
* The plugin will be reffed; caller is responsible for unreffing.
*
- * Returns: The plugin with the given name or NULL if the plugin was not found.
- * gst_object_unref() after usage.
+ * Returns: (transfer full): the plugin with the given name or NULL if the
+ * plugin was not found. gst_object_unref() after usage.
*
* MT safe.
*/
walk = gst_registry_plugin_filter (registry,
(GstPluginFilter) gst_plugin_name_filter, TRUE, (gpointer) name);
if (walk) {
- result = GST_PLUGIN (walk->data);
+ result = GST_PLUGIN_CAST (walk->data);
gst_object_ref (result);
gst_plugin_list_free (walk);
*
* Find the pluginfeature with the given name and type in the registry.
*
- * Returns: The pluginfeature with the given name and type or NULL
- * if the plugin was not found. gst_object_unref() after usage.
+ * Returns: (transfer full): the pluginfeature with the given name and type
+ * or NULL if the plugin was not found. gst_object_unref() after usage.
*
* MT safe.
*/
GType type)
{
GstPluginFeature *feature = NULL;
- GList *walk;
- GstTypeNameData data;
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
g_return_val_if_fail (name != NULL, NULL);
+ g_return_val_if_fail (g_type_is_a (type, GST_TYPE_PLUGIN_FEATURE), NULL);
- data.name = name;
- data.type = type;
-
- walk = gst_registry_feature_filter (registry,
- (GstPluginFeatureFilter) gst_plugin_feature_type_name_filter,
- TRUE, &data);
-
- if (walk) {
- feature = GST_PLUGIN_FEATURE (walk->data);
-
- gst_object_ref (feature);
- gst_plugin_feature_list_free (walk);
+ feature = gst_registry_lookup_feature (registry, name);
+ if (feature && !g_type_is_a (G_TYPE_FROM_INSTANCE (feature), type)) {
+ gst_object_unref (feature);
+ feature = NULL;
}
return feature;
*
* Retrieves a #GList of #GstPluginFeature of @type.
*
- * Returns: a #GList of #GstPluginFeature of @type. gst_plugin_feature_list_free
- * after usage.
+ * Returns: (transfer full) (element-type Gst.PluginFeature): a #GList of
+ * #GstPluginFeature of @type. Use gst_plugin_feature_list_free() after use
*
* MT safe.
*/
{
GstTypeNameData data;
+ g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
+ g_return_val_if_fail (g_type_is_a (type, GST_TYPE_PLUGIN_FEATURE), NULL);
+
+ /* Speed up */
+ if (type == GST_TYPE_ELEMENT_FACTORY)
+ return gst_registry_get_element_factory_list (registry);
+ else if (type == GST_TYPE_TYPE_FIND_FACTORY)
+ return gst_registry_get_typefind_factory_list (registry);
+
data.type = type;
data.name = NULL;
* Get a copy of all plugins registered in the given registry. The refcount
* of each element in the list in incremented.
*
- * Returns: a #GList of #GstPlugin. gst_plugin_list_free after use.
+ * Returns: (transfer full) (element-type Gst.Plugin): a #GList of #GstPlugin.
+ * Use gst_plugin_list_free() after usage.
*
* MT safe.
*/
GList *list;
GList *g;
+ g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
+
GST_OBJECT_LOCK (registry);
list = g_list_copy (registry->plugins);
for (g = list; g; g = g->next) {
- gst_object_ref (GST_PLUGIN (g->data));
+ gst_object_ref (GST_PLUGIN_CAST (g->data));
}
GST_OBJECT_UNLOCK (registry);
static GstPluginFeature *
gst_registry_lookup_feature_locked (GstRegistry * registry, const char *name)
{
- GList *g;
- GstPluginFeature *feature;
-
- if (name == NULL)
- return NULL;
-
- for (g = registry->features; g; g = g_list_next (g)) {
- feature = GST_PLUGIN_FEATURE (g->data);
- if (feature->name && strcmp (name, feature->name) == 0) {
- return feature;
- }
- }
-
- return NULL;
+ return g_hash_table_lookup (registry->feature_hash, name);
}
/**
* @name: a #GstPluginFeature name
*
* Find a #GstPluginFeature with @name in @registry.
- *
- * Returns: a #GstPluginFeature with its refcount incremented, use
- * gst_object_unref() after usage.
+ *
+ * Returns: (transfer full): a #GstPluginFeature with its refcount incremented,
+ * use gst_object_unref() after usage.
*
* MT safe.
*/
{
GstPluginFeature *feature;
+ g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
+ g_return_val_if_fail (name != NULL, NULL);
+
GST_OBJECT_LOCK (registry);
feature = gst_registry_lookup_feature_locked (registry, name);
if (feature)
}
static GstPlugin *
-gst_registry_lookup_locked (GstRegistry * registry, const char *filename)
+gst_registry_lookup_bn_locked (GstRegistry * registry, const char *basename)
{
- GList *g;
- GstPlugin *plugin;
- gchar *basename;
+ return g_hash_table_lookup (registry->basename_hash, basename);
+}
- if (filename == NULL)
- return NULL;
+static GstPlugin *
+gst_registry_lookup_bn (GstRegistry * registry, const char *basename)
+{
+ GstPlugin *plugin;
- basename = g_path_get_basename (filename);
- for (g = registry->plugins; g; g = g_list_next (g)) {
- plugin = GST_PLUGIN (g->data);
- if (plugin->basename && strcmp (basename, plugin->basename) == 0) {
- g_free (basename);
- return plugin;
- }
- }
+ GST_OBJECT_LOCK (registry);
+ plugin = gst_registry_lookup_bn_locked (registry, basename);
+ if (plugin)
+ gst_object_ref (plugin);
+ GST_OBJECT_UNLOCK (registry);
- g_free (basename);
- return NULL;
+ return plugin;
}
/**
* Look up a plugin in the given registry with the given filename.
* If found, plugin is reffed.
*
- * Returns: the #GstPlugin if found, or NULL if not. gst_object_unref()
- * after usage.
+ * Returns: (transfer full): the #GstPlugin if found, or NULL if not.
+ * gst_object_unref() after usage.
*/
GstPlugin *
gst_registry_lookup (GstRegistry * registry, const char *filename)
{
GstPlugin *plugin;
+ gchar *basename;
- GST_OBJECT_LOCK (registry);
- plugin = gst_registry_lookup_locked (registry, filename);
- if (plugin)
- gst_object_ref (plugin);
- GST_OBJECT_UNLOCK (registry);
+ g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
+ g_return_val_if_fail (filename != NULL, NULL);
+
+ basename = g_path_get_basename (filename);
+ if (G_UNLIKELY (basename == NULL))
+ return NULL;
+
+ plugin = gst_registry_lookup_bn (registry, basename);
+
+ g_free (basename);
return plugin;
}
+typedef enum
+{
+ REGISTRY_SCAN_HELPER_NOT_STARTED = 0,
+ REGISTRY_SCAN_HELPER_DISABLED,
+ REGISTRY_SCAN_HELPER_RUNNING
+} GstRegistryScanHelperState;
+
+typedef struct
+{
+ GstRegistry *registry;
+ GstRegistryScanHelperState helper_state;
+ GstPluginLoader *helper;
+ gboolean changed;
+} GstRegistryScanContext;
+
static void
-gst_registry_scan_path_level (GstRegistry * registry, const gchar * path,
- int level)
+init_scan_context (GstRegistryScanContext * context, GstRegistry * registry)
+{
+ gboolean do_fork;
+
+ context->registry = registry;
+
+ /* see if forking is enabled and set up the scan helper state accordingly */
+ do_fork = _gst_enable_registry_fork;
+ if (do_fork) {
+ const gchar *fork_env;
+
+ /* forking enabled, see if it is disabled with an env var */
+ if ((fork_env = g_getenv ("GST_REGISTRY_FORK"))) {
+ /* fork enabled for any value different from "no" */
+ do_fork = strcmp (fork_env, "no") != 0;
+ }
+ }
+
+ if (do_fork)
+ context->helper_state = REGISTRY_SCAN_HELPER_NOT_STARTED;
+ else
+ context->helper_state = REGISTRY_SCAN_HELPER_DISABLED;
+
+ context->helper = NULL;
+ context->changed = FALSE;
+}
+
+static void
+clear_scan_context (GstRegistryScanContext * context)
+{
+ if (context->helper) {
+ context->changed |= _priv_gst_plugin_loader_funcs.destroy (context->helper);
+ context->helper = NULL;
+ }
+}
+
+static gboolean
+gst_registry_scan_plugin_file (GstRegistryScanContext * context,
+ const gchar * filename, off_t file_size, time_t file_mtime)
+{
+ gboolean changed = FALSE;
+ GstPlugin *newplugin = NULL;
+
+#ifdef G_OS_WIN32
+ /* Disable external plugin loader on Windows until it is ported properly. */
+ context->helper_state = REGISTRY_SCAN_HELPER_DISABLED;
+#endif
+
+
+ /* Have a plugin to load - see if the scan-helper needs starting */
+ if (context->helper_state == REGISTRY_SCAN_HELPER_NOT_STARTED) {
+ GST_DEBUG ("Starting plugin scanner for file %s", filename);
+ context->helper = _priv_gst_plugin_loader_funcs.create (context->registry);
+ if (context->helper != NULL)
+ context->helper_state = REGISTRY_SCAN_HELPER_RUNNING;
+ else {
+ GST_WARNING ("Failed starting plugin scanner. Scanning in-process");
+ context->helper_state = REGISTRY_SCAN_HELPER_DISABLED;
+ }
+ }
+
+ if (context->helper_state == REGISTRY_SCAN_HELPER_RUNNING) {
+ GST_DEBUG ("Using scan-helper to load plugin %s", filename);
+ if (!_priv_gst_plugin_loader_funcs.load (context->helper,
+ filename, file_size, file_mtime)) {
+ g_warning ("External plugin loader failed. This most likely means that "
+ "the plugin loader helper binary was not found or could not be run. "
+ "%s", (g_getenv ("GST_PLUGIN_PATH") != NULL) ?
+ "If you are running an uninstalled GStreamer setup, you might need "
+ "to update your gst-uninstalled script so that the "
+ "GST_PLUGIN_SCANNER environment variable gets set." : "");
+ context->helper_state = REGISTRY_SCAN_HELPER_DISABLED;
+ }
+ }
+
+ /* Check if the helper is disabled (or just got disabled above) */
+ if (context->helper_state == REGISTRY_SCAN_HELPER_DISABLED) {
+ /* Load plugin the old fashioned way... */
+
+ /* We don't use a GError here because a failure to load some shared
+ * objects as plugins is normal (particularly in the uninstalled case)
+ */
+ newplugin = gst_plugin_load_file (filename, NULL);
+ }
+
+ if (newplugin) {
+ GST_DEBUG_OBJECT (context->registry, "marking new plugin %p as registered",
+ newplugin);
+ newplugin->registered = TRUE;
+ gst_object_unref (newplugin);
+ changed = TRUE;
+ }
+#ifndef GST_DISABLE_REGISTRY
+ if (!__registry_reuse_plugin_scanner) {
+ clear_scan_context (context);
+ context->helper_state = REGISTRY_SCAN_HELPER_NOT_STARTED;
+ }
+#endif
+
+ return changed;
+}
+
+static gboolean
+is_blacklisted_hidden_directory (const gchar * dirent)
+{
+ if (G_LIKELY (dirent[0] != '.'))
+ return FALSE;
+
+ /* skip the .debug directory, these contain elf files that are not
+ * useful or worse, can crash dlopen () */
+ if (strcmp (dirent, ".debug") == 0)
+ return TRUE;
+
+ /* can also skip .git and .deps dirs, those won't contain useful files.
+ * This speeds up scanning a bit in uninstalled setups. */
+ if (strcmp (dirent, ".git") == 0 || strcmp (dirent, ".deps") == 0)
+ return TRUE;
+
+ return FALSE;
+}
+
+static gboolean
+gst_registry_scan_path_level (GstRegistryScanContext * context,
+ const gchar * path, int level)
{
GDir *dir;
const gchar *dirent;
gchar *filename;
GstPlugin *plugin;
- GstPlugin *newplugin;
+ gboolean changed = FALSE;
dir = g_dir_open (path, 0, NULL);
if (!dir)
- return;
+ return FALSE;
while ((dirent = g_dir_read_name (dir))) {
- filename = g_strjoin ("/", path, dirent, NULL);
+ GStatBuf file_status;
- GST_LOG_OBJECT (registry, "examining file: %s", filename);
+ filename = g_build_filename (path, dirent, NULL);
+ if (g_stat (filename, &file_status) < 0) {
+ /* Plugin will be removed from cache after the scan completes if it
+ * is still marked 'cached' */
+ g_free (filename);
+ continue;
+ }
- if (g_file_test (filename, G_FILE_TEST_IS_DIR)) {
+ if (file_status.st_mode & S_IFDIR) {
+ if (G_UNLIKELY (is_blacklisted_hidden_directory (dirent))) {
+ GST_TRACE_OBJECT (context->registry, "ignoring %s directory", dirent);
+ g_free (filename);
+ continue;
+ }
+ /* FIXME 0.11: Don't recurse into directories, this behaviour
+ * is inconsistent with other PATH environment variables
+ */
if (level > 0) {
- GST_LOG_OBJECT (registry, "found directory, recursing");
- gst_registry_scan_path_level (registry, filename, level - 1);
+ GST_LOG_OBJECT (context->registry, "recursing into directory %s",
+ filename);
+ changed |= gst_registry_scan_path_level (context, filename, level - 1);
} else {
- GST_LOG_OBJECT (registry,
- "found directory, but recursion level is too deep");
+ GST_LOG_OBJECT (context->registry, "not recursing into directory %s, "
+ "recursion level too deep", filename);
}
g_free (filename);
continue;
}
- if (!g_file_test (filename, G_FILE_TEST_IS_REGULAR)) {
- GST_LOG_OBJECT (registry, "not a regular file, ignoring");
+ if (!(file_status.st_mode & S_IFREG)) {
+ GST_TRACE_OBJECT (context->registry, "%s is not a regular file, ignoring",
+ filename);
g_free (filename);
continue;
}
- if (!g_str_has_suffix (filename, ".so") &&
- !g_str_has_suffix (filename, ".dll") &&
- !g_str_has_suffix (filename, ".dynlib")) {
- GST_LOG_OBJECT (registry,
- "extension is not recognized as module file, ignoring");
+ if (!g_str_has_suffix (dirent, G_MODULE_SUFFIX)
+#ifdef GST_EXTRA_MODULE_SUFFIX
+ && !g_str_has_suffix (dirent, GST_EXTRA_MODULE_SUFFIX)
+#endif
+ ) {
+ GST_TRACE_OBJECT (context->registry,
+ "extension is not recognized as module file, ignoring file %s",
+ filename);
+ g_free (filename);
+ continue;
+ }
+
+ GST_LOG_OBJECT (context->registry, "file %s looks like a possible module",
+ filename);
+
+ /* try to avoid unnecessary plugin-move pain */
+ if (g_str_has_prefix (dirent, "libgstvalve") ||
+ g_str_has_prefix (dirent, "libgstselector")) {
+ GST_WARNING_OBJECT (context->registry, "ignoring old plugin %s which "
+ "has been merged into the corelements plugin", filename);
+ /* Plugin will be removed from cache after the scan completes if it
+ * is still marked 'cached' */
g_free (filename);
continue;
}
/* plug-ins are considered unique by basename; if the given name
* was already seen by the registry, we ignore it */
- plugin = gst_registry_lookup (registry, filename);
+ plugin = gst_registry_lookup_bn (context->registry, dirent);
if (plugin) {
- struct stat file_status;
+ gboolean env_vars_changed, deps_changed = FALSE;
- if (stat (filename, &file_status)) {
- /* FIXME remove from cache */
- g_free (filename);
- continue;
- }
if (plugin->registered) {
- GST_DEBUG_OBJECT (registry,
+ GST_DEBUG_OBJECT (context->registry,
"plugin already registered from path \"%s\"",
GST_STR_NULL (plugin->filename));
g_free (filename);
gst_object_unref (plugin);
continue;
}
+
+ env_vars_changed = _priv_plugin_deps_env_vars_changed (plugin);
+
+ /* If a file with a certain basename is seen on a different path,
+ * update the plugin to ensure the registry cache will reflect up
+ * to date information */
+
if (plugin->file_mtime == file_status.st_mtime &&
- plugin->file_size == file_status.st_size) {
- GST_DEBUG_OBJECT (registry, "file %s cached", filename);
+ plugin->file_size == file_status.st_size && !env_vars_changed &&
+ !(deps_changed = _priv_plugin_deps_files_changed (plugin)) &&
+ !strcmp (plugin->filename, filename)) {
+ GST_LOG_OBJECT (context->registry, "file %s cached", filename);
plugin->flags &= ~GST_PLUGIN_FLAG_CACHED;
- GST_DEBUG_OBJECT (registry, "marking plugin %p as registered", plugin);
+ GST_LOG_OBJECT (context->registry,
+ "marking plugin %p as registered as %s", plugin, filename);
plugin->registered = TRUE;
} else {
- GST_INFO_OBJECT (registry, "cached info for %s is stale", filename);
- GST_DEBUG_OBJECT (registry, "mtime %ld != %ld or size %"
- G_GSIZE_FORMAT " != %"
- G_GSIZE_FORMAT, plugin->file_mtime, file_status.st_mtime,
- plugin->file_size, file_status.st_size);
- gst_registry_remove_plugin (gst_registry_get_default (), plugin);
- newplugin = gst_plugin_load_file (filename, NULL);
- if (newplugin) {
- GST_DEBUG_OBJECT (registry, "marking new plugin %p as registered",
- newplugin);
- newplugin->registered = TRUE;
- gst_object_unref (newplugin);
- }
+ GST_INFO_OBJECT (context->registry, "cached info for %s is stale",
+ filename);
+ GST_DEBUG_OBJECT (context->registry, "mtime %" G_GINT64_FORMAT " != %"
+ G_GINT64_FORMAT " or size %" G_GINT64_FORMAT " != %"
+ G_GINT64_FORMAT " or external dependency env_vars changed: %d or"
+ " external dependencies changed: %d or old path %s != new path %s",
+ (gint64) plugin->file_mtime, (gint64) file_status.st_mtime,
+ (gint64) plugin->file_size, (gint64) file_status.st_size,
+ env_vars_changed, deps_changed, plugin->filename, filename);
+ gst_registry_remove_plugin (context->registry, plugin);
+ changed |= gst_registry_scan_plugin_file (context, filename,
+ file_status.st_size, file_status.st_mtime);
}
gst_object_unref (plugin);
} else {
- GST_DEBUG_OBJECT (registry, "file %s not yet in registry", filename);
- newplugin = gst_plugin_load_file (filename, NULL);
- if (newplugin) {
- newplugin->registered = TRUE;
- gst_object_unref (newplugin);
- }
+ GST_DEBUG_OBJECT (context->registry, "file %s not yet in registry",
+ filename);
+ changed |= gst_registry_scan_plugin_file (context, filename,
+ file_status.st_size, file_status.st_mtime);
}
g_free (filename);
}
g_dir_close (dir);
+
+ return changed;
+}
+
+static gboolean
+gst_registry_scan_path_internal (GstRegistryScanContext * context,
+ const gchar * path)
+{
+ gboolean changed;
+
+ GST_DEBUG_OBJECT (context->registry, "scanning path %s", path);
+ changed = gst_registry_scan_path_level (context, path, 10);
+
+ GST_DEBUG_OBJECT (context->registry, "registry changed in path %s: %d", path,
+ changed);
+ return changed;
}
/**
* gst_registry_scan_path:
- * @registry: the registry to add the path to
- * @path: the path to add to the registry
+ * @registry: the registry to add found plugins to
+ * @path: the path to scan
*
- * 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.
+ * Scan the given path for plugins to add to the registry. The syntax of the
+ * path is specific to the registry.
+ *
+ * Returns: %TRUE if registry changed
*/
-void
+gboolean
gst_registry_scan_path (GstRegistry * registry, const gchar * path)
{
- GST_DEBUG_OBJECT (registry, "scanning path %s", path);
- gst_registry_scan_path_level (registry, path, 10);
-}
+ GstRegistryScanContext context;
+ gboolean result;
-void
-_gst_registry_remove_cache_plugins (GstRegistry * registry)
-{
- GList *g;
- GList *g_next;
- GstPlugin *plugin;
+ g_return_val_if_fail (GST_IS_REGISTRY (registry), FALSE);
+ g_return_val_if_fail (path != NULL, FALSE);
- GST_DEBUG_OBJECT (registry, "removing cached plugins");
- g = registry->plugins;
- while (g) {
- g_next = g->next;
- plugin = g->data;
- if (plugin->flags & GST_PLUGIN_FLAG_CACHED) {
- GST_DEBUG_OBJECT (registry, "removing cached plugin \"%s\"",
- GST_STR_NULL (plugin->filename));
- registry->plugins = g_list_remove (registry->plugins, plugin);
- gst_object_unref (plugin);
- }
- g = g_next;
- }
-}
+ init_scan_context (&context, registry);
+ result = gst_registry_scan_path_internal (&context, path);
+
+ clear_scan_context (&context);
+ result |= context.changed;
+
+ return result;
+}
static gboolean
_gst_plugin_feature_filter_plugin_name (GstPluginFeature * feature,
*
* Retrieves a #GList of features of the plugin with name @name.
*
- * Returns: a #GList of #GstPluginFeature. gst_plugin_feature_list_free() after usage.
+ * Returns: (transfer full) (element-type Gst.PluginFeature): a #GList of
+ * #GstPluginFeature. Use gst_plugin_feature_list_free() after usage.
*/
GList *
gst_registry_get_feature_list_by_plugin (GstRegistry * registry,
const gchar * name)
{
+ g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
+ g_return_val_if_fail (name != NULL, NULL);
+
return gst_registry_feature_filter (registry,
_gst_plugin_feature_filter_plugin_name, FALSE, (gpointer) name);
}
+/* Unref and delete the default registry */
void
-_gst_registry_cleanup ()
+_priv_gst_registry_cleanup (void)
{
- if (!_gst_registry_default)
- return;
+ GstRegistry *registry;
+
+ g_static_mutex_lock (&_gst_registry_mutex);
+ if ((registry = _gst_registry_default) != NULL) {
+ _gst_registry_default = NULL;
+ }
+ g_static_mutex_unlock (&_gst_registry_mutex);
- gst_object_unref (_gst_registry_default);
- _gst_registry_default = NULL;
+ /* unref outside of the lock because we can. */
+ if (registry)
+ gst_object_unref (registry);
}
/**
return ret;
}
+
+static void
+load_plugin_func (gpointer data, gpointer user_data)
+{
+ GstPlugin *plugin;
+ const gchar *filename;
+ GError *err = NULL;
+
+ filename = (const gchar *) data;
+ GST_DEBUG ("Pre-loading plugin %s", filename);
+
+ plugin = gst_plugin_load_file (filename, &err);
+
+ if (plugin) {
+ GST_INFO ("Loaded plugin: \"%s\"", filename);
+
+ gst_default_registry_add_plugin (plugin);
+ } else {
+ if (err) {
+ /* Report error to user, and free error */
+ GST_ERROR ("Failed to load plugin: %s", err->message);
+ g_error_free (err);
+ } else {
+ GST_WARNING ("Failed to load plugin: \"%s\"", filename);
+ }
+ }
+}
+
+#ifndef GST_DISABLE_REGISTRY
+/* Unref all plugins marked 'cached', to clear old plugins that no
+ * longer exist. Returns TRUE if any plugins were removed */
+static gboolean
+gst_registry_remove_cache_plugins (GstRegistry * registry)
+{
+ GList *g;
+ GList *g_next;
+ GstPlugin *plugin;
+ gboolean changed = FALSE;
+
+ g_return_val_if_fail (GST_IS_REGISTRY (registry), FALSE);
+
+ GST_OBJECT_LOCK (registry);
+
+ GST_DEBUG_OBJECT (registry, "removing cached plugins");
+ g = registry->plugins;
+ while (g) {
+ g_next = g->next;
+ plugin = g->data;
+ if (plugin->flags & GST_PLUGIN_FLAG_CACHED) {
+ GST_DEBUG_OBJECT (registry, "removing cached plugin \"%s\"",
+ GST_STR_NULL (plugin->filename));
+ registry->plugins = g_list_delete_link (registry->plugins, g);
+ if (G_LIKELY (plugin->basename))
+ g_hash_table_remove (registry->basename_hash, plugin->basename);
+ gst_registry_remove_features_for_plugin_unlocked (registry, plugin);
+ gst_object_unref (plugin);
+ changed = TRUE;
+ }
+ g = g_next;
+ }
+
+ GST_OBJECT_UNLOCK (registry);
+
+ return changed;
+}
+
+typedef enum
+{
+ REGISTRY_SCAN_AND_UPDATE_FAILURE = 0,
+ REGISTRY_SCAN_AND_UPDATE_SUCCESS_NOT_CHANGED,
+ REGISTRY_SCAN_AND_UPDATE_SUCCESS_UPDATED
+} GstRegistryScanAndUpdateResult;
+
+/*
+ * scan_and_update_registry:
+ * @default_registry: the #GstRegistry
+ * @registry_file: registry filename
+ * @write_changes: write registry if it has changed?
+ *
+ * Scans for registry changes and eventually updates the registry cache.
+ *
+ * Return: %REGISTRY_SCAN_AND_UPDATE_FAILURE if the registry could not scanned
+ * or updated, %REGISTRY_SCAN_AND_UPDATE_SUCCESS_NOT_CHANGED if the
+ * registry is clean and %REGISTRY_SCAN_AND_UPDATE_SUCCESS_UPDATED if
+ * it has been updated and the cache needs to be re-read.
+ */
+static GstRegistryScanAndUpdateResult
+scan_and_update_registry (GstRegistry * default_registry,
+ const gchar * registry_file, gboolean write_changes, GError ** error)
+{
+ const gchar *plugin_path;
+ gboolean changed = FALSE;
+ GList *l;
+ GstRegistryScanContext context;
+
+ GST_INFO ("Validating plugins from registry cache: %s", registry_file);
+
+ init_scan_context (&context, default_registry);
+
+ /* It sounds tempting to just compare the mtime of directories with the mtime
+ * of the registry cache, but it does not work. It would not catch updated
+ * plugins, which might bring more or less features.
+ */
+
+ /* scan paths specified via --gst-plugin-path */
+ GST_DEBUG ("scanning paths added via --gst-plugin-path");
+ for (l = _priv_gst_plugin_paths; l != NULL; l = l->next) {
+ GST_INFO ("Scanning plugin path: \"%s\"", (gchar *) l->data);
+ changed |= gst_registry_scan_path_internal (&context, (gchar *) l->data);
+ }
+ /* keep plugin_paths around in case a re-scan is forced later on */
+
+ /* GST_PLUGIN_PATH specifies a list of directories to scan for
+ * additional plugins. These take precedence over the system plugins */
+ plugin_path = g_getenv ("GST_PLUGIN_PATH");
+ if (plugin_path) {
+ char **list;
+ int i;
+
+ GST_DEBUG ("GST_PLUGIN_PATH set to %s", plugin_path);
+ list = g_strsplit (plugin_path, G_SEARCHPATH_SEPARATOR_S, 0);
+ for (i = 0; list[i]; i++) {
+ changed |= gst_registry_scan_path_internal (&context, list[i]);
+ }
+ g_strfreev (list);
+ } else {
+ GST_DEBUG ("GST_PLUGIN_PATH not set");
+ }
+
+ /* GST_PLUGIN_SYSTEM_PATH specifies a list of plugins that are always
+ * loaded by default. If not set, this defaults to the system-installed
+ * path, and the plugins installed in the user's home directory */
+ plugin_path = g_getenv ("GST_PLUGIN_SYSTEM_PATH");
+ if (plugin_path == NULL) {
+ char *home_plugins, *backwards_compat_plugins;
+
+ GST_DEBUG ("GST_PLUGIN_SYSTEM_PATH not set");
+
+ /* plugins in the user's home directory take precedence over
+ * system-installed ones */
+ home_plugins = g_build_filename (g_get_home_dir (),
+ ".gstreamer-" GST_MAJORMINOR, "plugins", NULL);
+ GST_DEBUG ("scanning home plugins %s", home_plugins);
+ changed |= gst_registry_scan_path_internal (&context, home_plugins);
+ g_free (home_plugins);
+
+ /* add the main (installed) library path */
+ GST_DEBUG ("scanning main plugins %s", PLUGINDIR);
+ changed |= gst_registry_scan_path_internal (&context, PLUGINDIR);
+
+ /* finally, look in the /usr/lib backwards-compatibility path. */
+ backwards_compat_plugins = g_build_filename ("/usr/lib",
+ "gstreamer-" GST_MAJORMINOR, NULL);
+ GST_DEBUG ("scanning plugins %s", backwards_compat_plugins);
+ changed |= gst_registry_scan_path_internal (&context, backwards_compat_plugins);
+ g_free (backwards_compat_plugins);
+
+#ifdef G_OS_WIN32
+ {
+ char *base_dir;
+ char *dir;
+
+ base_dir =
+ g_win32_get_package_installation_directory_of_module
+ (_priv_gst_dll_handle);
+
+ dir = g_build_filename (base_dir, "lib", "gstreamer-0.10", NULL);
+ GST_DEBUG ("scanning DLL dir %s", dir);
+
+ changed |= gst_registry_scan_path_internal (&context, dir);
+
+ g_free (dir);
+ g_free (base_dir);
+ }
+#endif
+ } else {
+ gchar **list;
+ gint i;
+
+ GST_DEBUG ("GST_PLUGIN_SYSTEM_PATH set to %s", plugin_path);
+ list = g_strsplit (plugin_path, G_SEARCHPATH_SEPARATOR_S, 0);
+ for (i = 0; list[i]; i++) {
+ changed |= gst_registry_scan_path_internal (&context, list[i]);
+ }
+ g_strfreev (list);
+ }
+
+ clear_scan_context (&context);
+ changed |= context.changed;
+
+ /* Remove cached plugins so stale info is cleared. */
+ changed |= gst_registry_remove_cache_plugins (default_registry);
+
+ if (!changed) {
+ GST_INFO ("Registry cache has not changed");
+ return REGISTRY_SCAN_AND_UPDATE_SUCCESS_NOT_CHANGED;
+ }
+
+ if (!write_changes) {
+ GST_INFO ("Registry cache changed, but writing is disabled. Not writing.");
+ return REGISTRY_SCAN_AND_UPDATE_FAILURE;
+ }
+
+ GST_INFO ("Registry cache changed. Writing new registry cache");
+ if (!gst_registry_binary_write_cache (default_registry, registry_file)) {
+ g_set_error (error, GST_CORE_ERROR, GST_CORE_ERROR_FAILED,
+ _("Error writing registry cache to %s: %s"),
+ registry_file, g_strerror (errno));
+ return REGISTRY_SCAN_AND_UPDATE_FAILURE;
+ }
+
+ GST_INFO ("Registry cache written successfully");
+ return REGISTRY_SCAN_AND_UPDATE_SUCCESS_UPDATED;
+}
+
+static gboolean
+ensure_current_registry (GError ** error)
+{
+ gchar *registry_file;
+ GstRegistry *default_registry;
+ gboolean ret = TRUE;
+ gboolean do_update = TRUE;
+ gboolean have_cache = TRUE;
+
+ default_registry = gst_registry_get_default ();
+ registry_file = g_strdup (g_getenv ("GST_REGISTRY"));
+ if (registry_file == NULL) {
+ registry_file = g_build_filename (g_get_home_dir (),
+ ".gstreamer-" GST_MAJORMINOR, "registry." HOST_CPU ".bin", NULL);
+ }
+
+ if (!_gst_disable_registry_cache) {
+ GST_INFO ("reading registry cache: %s", registry_file);
+ have_cache = gst_registry_binary_read_cache (default_registry,
+ registry_file);
+ /* Only ever read the registry cache once, then disable it for
+ * subsequent updates during the program lifetime */
+ _gst_disable_registry_cache = TRUE;
+ }
+
+ if (have_cache) {
+ do_update = !_priv_gst_disable_registry_update;
+ if (do_update) {
+ const gchar *update_env;
+
+ if ((update_env = g_getenv ("GST_REGISTRY_UPDATE"))) {
+ /* do update for any value different from "no" */
+ do_update = (strcmp (update_env, "no") != 0);
+ }
+ }
+ }
+
+ if (do_update) {
+ const gchar *reuse_env;
+
+ if ((reuse_env = g_getenv ("GST_REGISTRY_REUSE_PLUGIN_SCANNER"))) {
+ /* do reuse for any value different from "no" */
+ __registry_reuse_plugin_scanner = (strcmp (reuse_env, "no") != 0);
+ }
+ /* now check registry */
+ GST_DEBUG ("Updating registry cache");
+ scan_and_update_registry (default_registry, registry_file, TRUE, error);
+ } else {
+ GST_DEBUG ("Not updating registry cache (disabled)");
+ }
+
+ g_free (registry_file);
+ GST_INFO ("registry reading and updating done, result = %d", ret);
+
+ return ret;
+}
+#endif /* GST_DISABLE_REGISTRY */
+
+/**
+ * gst_registry_fork_is_enabled:
+ *
+ * By default GStreamer will perform scanning and rebuilding of the
+ * registry file using a helper child process.
+ *
+ * Applications might want to disable this behaviour with the
+ * gst_registry_fork_set_enabled() function, in which case new plugins
+ * are scanned (and loaded) into the application process.
+ *
+ * Returns: %TRUE if GStreamer will use the child helper process when
+ * rebuilding the registry.
+ *
+ * Since: 0.10.10
+ */
+gboolean
+gst_registry_fork_is_enabled (void)
+{
+ return _gst_enable_registry_fork;
+}
+
+/**
+ * gst_registry_fork_set_enabled:
+ * @enabled: whether rebuilding the registry can use a temporary child helper process.
+ *
+ * Applications might want to disable/enable spawning of a child helper process
+ * when rebuilding the registry. See gst_registry_fork_is_enabled() for more
+ * information.
+ *
+ * Since: 0.10.10
+ */
+void
+gst_registry_fork_set_enabled (gboolean enabled)
+{
+ _gst_enable_registry_fork = enabled;
+}
+
+/**
+ * gst_update_registry:
+ *
+ * Forces GStreamer to re-scan its plugin paths and update the default
+ * plugin registry.
+ *
+ * Applications will almost never need to call this function, it is only
+ * useful if the application knows new plugins have been installed (or old
+ * ones removed) since the start of the application (or, to be precise, the
+ * first call to gst_init()) and the application wants to make use of any
+ * newly-installed plugins without restarting the application.
+ *
+ * Applications should assume that the registry update is neither atomic nor
+ * thread-safe and should therefore not have any dynamic pipelines running
+ * (including the playbin and decodebin elements) and should also not create
+ * any elements or access the GStreamer registry while the update is in
+ * progress.
+ *
+ * Note that this function may block for a significant amount of time.
+ *
+ * Returns: %TRUE if the registry has been updated successfully (does not
+ * imply that there were changes), otherwise %FALSE.
+ *
+ * Since: 0.10.12
+ */
+gboolean
+gst_update_registry (void)
+{
+ gboolean res;
+
+#ifndef 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);
+ } else {
+ GST_LOG ("registry update succeeded");
+ }
+
+#else
+ GST_WARNING ("registry update failed: %s", "registry disabled");
+ res = TRUE;
+#endif /* GST_DISABLE_REGISTRY */
+
+ if (_priv_gst_preload_plugins) {
+ GST_DEBUG ("Preloading indicated plugins...");
+ g_slist_foreach (_priv_gst_preload_plugins, load_plugin_func, NULL);
+ }
+
+ return res;
+}
+
+/**
+ * gst_registry_get_feature_list_cookie:
+ * @registry: the registry
+ *
+ * Returns the registrys feature list cookie. This changes
+ * every time a feature is added or removed from the registry.
+ *
+ * Returns: the feature list cookie.
+ *
+ * Since: 0.10.26
+ */
+guint32
+gst_registry_get_feature_list_cookie (GstRegistry * registry)
+{
+ g_return_val_if_fail (GST_IS_REGISTRY (registry), 0);
+
+ return registry->priv->cookie;
+}