/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2005 David A. Schleef <ds@schleef.org>
*
* gstregistry.c: handle registry
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gstregistry
* @short_description: Abstract base class for management of #GstPlugin objects
* @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. #GstPlugins 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 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.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-$GST_MAJORMINOR/registry-$ARCH.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:
* <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 intitialization.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gst_private.h"
#include <glib.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "gstinfo.h"
#include "gstregistry.h"
#include "gstmarshal.h"
#include "gstfilter.h"
#ifdef __SYMBIAN32__
#include <glib_global.h>
#include "helpfile.h"
#endif
#define GST_CAT_DEFAULT GST_CAT_REGISTRY
/* 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;
/* Element signals and args */
enum
{
PLUGIN_ADDED,
FEATURE_ADDED,
LAST_SIGNAL
};
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);
G_DEFINE_TYPE (GstRegistry, gst_registry, GST_TYPE_OBJECT);
static GstObjectClass *parent_class = NULL;
static void
gst_registry_class_init (GstRegistryClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
parent_class = g_type_class_peek_parent (klass);
/**
* 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);
}
static void
gst_registry_init (GstRegistry * registry)
{
registry->feature_hash = g_hash_table_new (g_str_hash, g_str_equal);
}
static void
gst_registry_finalize (GObject * object)
{
GstRegistry *registry = GST_REGISTRY (object);
GList *plugins, *p;
GList *features, *f;
plugins = registry->plugins;
registry->plugins = NULL;
GST_DEBUG_OBJECT (registry, "registry finalize");
p = plugins;
while (p) {
GstPlugin *plugin = p->data;
if (plugin) {
GST_LOG_OBJECT (registry, "removing plugin %s",
gst_plugin_get_name (plugin));
gst_object_unref (plugin);
}
p = g_list_next (p);
}
g_list_free (plugins);
features = registry->features;
registry->features = NULL;
f = features;
while (f) {
GstPluginFeature *feature = f->data;
if (feature) {
GST_LOG_OBJECT (registry, "removing feature %p (%s)",
feature, gst_plugin_feature_get_name (feature));
gst_object_unref (feature);
}
f = g_list_next (f);
}
g_list_free (features);
g_hash_table_destroy (registry->feature_hash);
registry->feature_hash = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/**
* gst_registry_get_default:
*
* 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.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GstRegistry *
gst_registry_get_default (void)
{
GstRegistry *registry;
g_static_mutex_lock (&_gst_registry_mutex);
if (G_UNLIKELY (!_gst_registry_default)) {
_gst_registry_default = g_object_new (GST_TYPE_REGISTRY, NULL);
gst_object_ref (GST_OBJECT_CAST (_gst_registry_default));
gst_object_sink (GST_OBJECT_CAST (_gst_registry_default));
}
registry = _gst_registry_default;
g_static_mutex_unlock (&_gst_registry_mutex);
return registry;
}
/**
* gst_registry_add_path:
* @registry: the registry to add the path to
* @path: the path to add to the registry
*
* 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.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
gst_registry_add_path (GstRegistry * registry, const gchar * path)
{
g_return_if_fail (GST_IS_REGISTRY (registry));
g_return_if_fail (path != NULL);
if (strlen (path) == 0)
goto empty_path;
GST_OBJECT_LOCK (registry);
if (g_list_find_custom (registry->paths, path, (GCompareFunc) strcmp))
goto was_added;
GST_INFO ("Adding plugin path: \"%s\"", path);
registry->paths = g_list_append (registry->paths, g_strdup (path));
GST_OBJECT_UNLOCK (registry);
return;
empty_path:
{
GST_INFO ("Ignoring empty plugin path");
return;
}
was_added:
{
g_warning ("path %s already added to registry", path);
GST_OBJECT_UNLOCK (registry);
return;
}
}
/**
* gst_registry_get_path_list:
* @registry: the registry to get the pathlist of
*
* Get the list of paths for the given registry.
*
* Returns: A Glist of paths as strings. g_list_free after use.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GList *
gst_registry_get_path_list (GstRegistry * registry)
{
GList *list;
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
GST_OBJECT_LOCK (registry);
/* We don't need to copy the strings, because they won't be deleted
* as long as the GstRegistry is around */
list = g_list_copy (registry->paths);
GST_OBJECT_UNLOCK (registry);
return list;
}
/**
* gst_registry_add_plugin:
* @registry: the registry to add the plugin to
* @plugin: the plugin to add
*
* Add the plugin to the registry. The plugin-added signal will be emitted.
* This function will sink @plugin.
*
* Returns: TRUE on success.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gboolean
gst_registry_add_plugin (GstRegistry * registry, GstPlugin * 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 (G_UNLIKELY (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);
}
GST_DEBUG_OBJECT (registry, "adding plugin %p for filename \"%s\"",
plugin, GST_STR_NULL (plugin->filename));
registry->plugins = g_list_prepend (registry->plugins, plugin);
gst_object_ref (plugin);
gst_object_sink (plugin);
GST_OBJECT_UNLOCK (registry);
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);
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 (feature && !strcmp (feature->plugin_name, gst_plugin_get_name (plugin))) {
GST_DEBUG_OBJECT (registry, "removing feature %p (%s) for plugin %s",
feature, gst_plugin_feature_get_name (feature),
gst_plugin_get_name (plugin));
registry->features = g_list_delete_link (registry->features, f);
g_hash_table_remove (registry->feature_hash, feature->name);
gst_object_unref (feature);
}
f = next;
}
}
/**
* gst_registry_remove_plugin:
* @registry: the registry to remove the plugin from
* @plugin: the plugin to remove
*
* Remove the plugin from the registry.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
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);
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
*
* Add the feature to the registry. The feature-added signal will be emitted.
* This function sinks @feature.
*
* Returns: TRUE on success.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gboolean
gst_registry_add_feature (GstRegistry * registry, GstPluginFeature * feature)
{
GstPluginFeature *existing_feature;
g_return_val_if_fail (GST_IS_REGISTRY (registry), FALSE);
g_return_val_if_fail (GST_IS_PLUGIN_FEATURE (feature), FALSE);
g_return_val_if_fail (feature->name != NULL, FALSE);
g_return_val_if_fail (feature->plugin_name != NULL, FALSE);
GST_OBJECT_LOCK (registry);
existing_feature = gst_registry_lookup_feature_locked (registry,
feature->name);
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_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);
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_unref (existing_feature);
}
gst_object_ref (feature);
gst_object_sink (feature);
GST_OBJECT_UNLOCK (registry);
GST_LOG_OBJECT (registry, "emitting feature-added for %s", feature->name);
g_signal_emit (G_OBJECT (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
*
* Remove the feature from the registry.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
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);
GST_OBJECT_UNLOCK (registry);
gst_object_unref (feature);
}
/**
* gst_registry_plugin_filter:
* @registry: registry to query
* @filter: the filter to use
* @first: only return first match
* @user_data: 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
* returned (as a list with a single object).
* 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.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GList *
gst_registry_plugin_filter (GstRegistry * registry,
GstPluginFilter filter, gboolean first, gpointer user_data)
{
GList *list;
GList *g;
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_CAST (g->data));
}
GST_OBJECT_UNLOCK (registry);
return list;
}
/**
* gst_registry_feature_filter:
* @registry: registry to query
* @filter: the filter to use
* @first: only return first match
* @user_data: 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.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GList *
gst_registry_feature_filter (GstRegistry * registry,
GstPluginFeatureFilter filter, gboolean first, gpointer user_data)
{
GList *list;
GList *g;
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_CAST (g->data));
}
GST_OBJECT_UNLOCK (registry);
return list;
}
/**
* gst_registry_find_plugin:
* @registry: the registry to search
* @name: the plugin name to find
*
* 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.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GstPlugin *
gst_registry_find_plugin (GstRegistry * registry, const gchar * name)
{
GList *walk;
GstPlugin *result = NULL;
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
g_return_val_if_fail (name != NULL, NULL);
walk = gst_registry_plugin_filter (registry,
(GstPluginFilter) gst_plugin_name_filter, TRUE, (gpointer) name);
if (walk) {
result = GST_PLUGIN_CAST (walk->data);
gst_object_ref (result);
gst_plugin_list_free (walk);
}
return result;
}
/**
* gst_registry_find_feature:
* @registry: the registry to search
* @name: the pluginfeature name to find
* @type: the pluginfeature type to find
*
* 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.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GstPluginFeature *
gst_registry_find_feature (GstRegistry * registry, const gchar * name,
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_CAST (walk->data);
gst_object_ref (feature);
gst_plugin_feature_list_free (walk);
}
return feature;
}
/**
* gst_registry_get_feature_list:
* @registry: a #GstRegistry
* @type: a #GType.
*
* Retrieves a #GList of #GstPluginFeature of @type.
*
* Returns: a #GList of #GstPluginFeature of @type. gst_plugin_feature_list_free
* after usage.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GList *
gst_registry_get_feature_list (GstRegistry * registry, GType type)
{
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);
data.type = type;
data.name = NULL;
return gst_registry_feature_filter (registry,
(GstPluginFeatureFilter) gst_plugin_feature_type_name_filter,
FALSE, &data);
}
/**
* gst_registry_get_plugin_list:
* @registry: the registry to search
*
* 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.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GList *
gst_registry_get_plugin_list (GstRegistry * registry)
{
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_CAST (g->data));
}
GST_OBJECT_UNLOCK (registry);
return list;
}
static GstPluginFeature *
gst_registry_lookup_feature_locked (GstRegistry * registry, const char *name)
{
if (G_UNLIKELY (name == NULL))
return NULL;
return g_hash_table_lookup (registry->feature_hash, name);
}
/**
* gst_registry_lookup_feature:
* @registry: a #GstRegistry
* @name: a #GstPluginFeature name
*
* Find a #GstPluginFeature with @name in @registry.
*
* Returns: a #GstPluginFeature with its refcount incremented, use
* gst_object_unref() after usage.
*
* MT safe.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GstPluginFeature *
gst_registry_lookup_feature (GstRegistry * registry, const char *name)
{
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)
gst_object_ref (feature);
GST_OBJECT_UNLOCK (registry);
return feature;
}
static GstPlugin *
gst_registry_lookup_locked (GstRegistry * registry, const char *filename)
{
GList *g;
GstPlugin *plugin;
gchar *basename;
if (G_UNLIKELY (filename == NULL))
return NULL;
basename = g_path_get_basename (filename);
/* FIXME: use GTree speed up lookups */
for (g = registry->plugins; g; g = g_list_next (g)) {
plugin = GST_PLUGIN_CAST (g->data);
if (plugin->basename && strcmp (basename, plugin->basename) == 0) {
g_free (basename);
return plugin;
}
}
g_free (basename);
return NULL;
}
/**
* gst_registry_lookup:
* @registry: the registry to look up in
* @filename: the name of the file to look up
*
* 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.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GstPlugin *
gst_registry_lookup (GstRegistry * registry, const char *filename)
{
GstPlugin *plugin;
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
g_return_val_if_fail (filename != NULL, NULL);
GST_OBJECT_LOCK (registry);
plugin = gst_registry_lookup_locked (registry, filename);
if (plugin)
gst_object_ref (plugin);
GST_OBJECT_UNLOCK (registry);
return plugin;
}
static gboolean
gst_registry_scan_path_level (GstRegistry * registry, const gchar * path,
int level)
{
GDir *directory[2];
GDir *dir;
const gchar *dirent;
gchar *filename;
GstPlugin *plugin;
GstPlugin *newplugin;
gboolean changed = FALSE;
#ifdef __SYMBIAN32__
GMappedFile *mapped = NULL;
gchar *contents = NULL;
gchar** arglist=NULL;
GError *err = NULL;
char* file;
gint i = 2;
#endif
directory[0] = g_dir_open ( PLUGIN_LIST, 0, NULL );
directory[1] = g_dir_open ( PLUGIN_LIST_IN_ROM, 0, NULL );
while( i ){
--i;
dir = directory[i];
if (!dir)
continue;
while ((dirent = g_dir_read_name (dir)))
{
#ifdef __SYMBIAN32__
if( i == 1 )
filename = g_strjoin ("\\", PLUGIN_LIST_IN_ROM, dirent, NULL);
else
filename = g_strjoin ("\\", PLUGIN_LIST, dirent, NULL);
mapped = g_mapped_file_new (filename, FALSE, &err);
contents = g_mapped_file_get_contents (mapped);
arglist = g_strsplit(contents, "\r\n", -1 );
g_free (filename);
while( *arglist )
{
filename = *arglist;
// trim white spaces from start
while(*filename ==' ' )
filename++;
file = filename;
// trim white spaces from last
while(*file != ' ' && *file != '\0')
file++;
*file = '\0';
arglist++;
/// get the full path of DLL
filename = libgstreamer_get_dll_path( filename );
#else
filename = g_strjoin ("\\", path, dirent, NULL);
#endif
GST_LOG_OBJECT (registry, "examining file: %s", filename);
if (g_file_test (filename, G_FILE_TEST_IS_DIR)) {
if (level > 0) {
GST_LOG_OBJECT (registry, "found directory, recursing");
changed |= gst_registry_scan_path_level (registry, filename, level - 1);
} else {
GST_LOG_OBJECT (registry,
"found directory, but recursion level is too deep");
}
g_free (filename);
continue;
}
if (!g_file_test (filename, G_FILE_TEST_IS_REGULAR)) {
GST_LOG_OBJECT (registry, "not a regular file, ignoring");
g_free (filename);
continue;
}
if (!g_str_has_suffix (filename, ".so") &&
!g_str_has_suffix (filename, ".sl") &&
!g_str_has_suffix (filename, ".dll") &&
!g_str_has_suffix (filename, ".dynlib")) {
GST_LOG_OBJECT (registry,
"extension is not recognized as module file, ignoring");
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);
if (plugin) {
struct stat file_status;
if (stat (filename, &file_status)) {
/* Plugin will be removed from cache after the scan completes if it
* is still marked 'cached' */
g_free (filename);
gst_object_unref (plugin);
continue;
}
if (plugin->registered) {
GST_DEBUG_OBJECT (registry,
"plugin already registered from path \"%s\"",
GST_STR_NULL (plugin->filename));
g_free (filename);
gst_object_unref (plugin);
continue;
}
if (plugin->file_mtime == file_status.st_mtime &&
plugin->file_size == file_status.st_size) {
GST_LOG_OBJECT (registry, "file %s cached", filename);
plugin->flags &= ~GST_PLUGIN_FLAG_CACHED;
GST_LOG_OBJECT (registry, "marking plugin %p as registered as %s",
plugin, filename);
plugin->registered = TRUE;
/* Update the file path on which we've seen this cached plugin
* to ensure the registry cache will reflect up to date information */
if (strcmp (plugin->filename, filename) != 0) {
g_free (plugin->filename);
plugin->filename = g_strdup (filename);
changed = TRUE;
}
} else {
GST_INFO_OBJECT (registry, "cached info for %s is stale", filename);
GST_DEBUG_OBJECT (registry, "mtime %ld != %ld or size %"
G_GINT64_FORMAT " != %"
G_GINT64_FORMAT, plugin->file_mtime, file_status.st_mtime,
(gint64) plugin->file_size, (gint64) file_status.st_size);
gst_registry_remove_plugin (gst_registry_get_default (), plugin);
/* 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 (registry, "marking new plugin %p as registered",
newplugin);
newplugin->registered = TRUE;
gst_object_unref (newplugin);
}
changed = TRUE;
}
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);
changed = TRUE;
}
}
g_free (filename);
}
#ifdef __SYMBIAN32__
}
#endif
g_dir_close (dir);
}
return changed;
}
/**
* gst_registry_scan_path:
* @registry: the registry to add the path to
* @path: the path to add to the registry
*
* 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.
*
* Returns: %TRUE if registry changed
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gboolean
gst_registry_scan_path (GstRegistry * registry, const gchar * path)
{
gboolean changed;
g_return_val_if_fail (GST_IS_REGISTRY (registry), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
GST_DEBUG_OBJECT (registry, "scanning path %s", path);
changed = gst_registry_scan_path_level (registry, path, 10);
GST_DEBUG_OBJECT (registry, "registry changed in path %s: %d", path, changed);
return changed;
}
/* Unref all plugins marked 'cached', to clear old plugins that no
* longer exist. Returns TRUE if any plugins were removed */
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gboolean
_priv_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);
gst_registry_remove_features_for_plugin_unlocked (registry, plugin);
gst_object_unref (plugin);
changed = TRUE;
}
g = g_next;
}
GST_OBJECT_UNLOCK (registry);
return changed;
}
static gboolean
_gst_plugin_feature_filter_plugin_name (GstPluginFeature * feature,
gpointer user_data)
{
return (strcmp (feature->plugin_name, (gchar *) user_data) == 0);
}
/**
* gst_registry_get_feature_list_by_plugin:
* @registry: a #GstRegistry.
* @name: a plugin name.
*
* Retrieves a #GList of features of the plugin with name @name.
*
* Returns: a #GList of #GstPluginFeature. gst_plugin_feature_list_free() after usage.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
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 */
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
_priv_gst_registry_cleanup ()
{
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);
/* unref outside of the lock because we can. */
if (registry)
gst_object_unref (registry);
}
/**
* gst_default_registry_check_feature_version:
* @feature_name: the name of the feature (e.g. "oggdemux")
* @min_major: the minimum major version number
* @min_minor: the minimum minor version number
* @min_micro: the minimum micro version number
*
* Checks whether a plugin feature by the given name exists in the
* default registry and whether its version is at least the
* version required.
*
* Returns: #TRUE if the feature could be found and the version is
* the same as the required version or newer, and #FALSE otherwise.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gboolean
gst_default_registry_check_feature_version (const gchar * feature_name,
guint min_major, guint min_minor, guint min_micro)
{
GstPluginFeature *feature;
GstRegistry *registry;
gboolean ret = FALSE;
g_return_val_if_fail (feature_name != NULL, FALSE);
GST_DEBUG ("Looking up plugin feature '%s'", feature_name);
registry = gst_registry_get_default ();
feature = gst_registry_lookup_feature (registry, feature_name);
if (feature) {
ret = gst_plugin_feature_check_version (feature, min_major, min_minor,
min_micro);
gst_object_unref (feature);
} else {
GST_DEBUG ("Could not find plugin feature '%s'", feature_name);
}
return ret;
}