2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
5 * gstplugin.c: Plugin subsystem for loading elements, types, and libs
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
25 * @short_description: Container for features loaded from a shared object module
26 * @see_also: #GstPluginFeature, #GstElementFactory
28 * GStreamer is extensible, so #GstElement instances can be loaded at runtime.
29 * A plugin system can provide one or more of the basic
30 * <application>GStreamer</application> #GstPluginFeature subclasses.
32 * A plugin should export a symbol <symbol>gst_plugin_desc</symbol> that is a
33 * struct of type #GstPluginDesc.
34 * the plugin loader will check the version of the core library the plugin was
35 * linked against and will create a new #GstPlugin. It will then call the
36 * #GstPluginInitFunc function that was provided in the
37 * <symbol>gst_plugin_desc</symbol>.
39 * Once you have a handle to a #GstPlugin (e.g. from the #GstRegistry), you
40 * can add any object that subclasses #GstPluginFeature.
42 * Usually plugins are always automaticlly loaded so you don't need to call
43 * gst_plugin_load() explicitly to bring it into memory. There are options to
44 * statically link plugins to an app or even use GStreamer without a plugin
45 * repository in which case gst_plugin_load() can be needed to bring the plugin
53 #include "gst_private.h"
55 #include <glib/gstdio.h>
56 #include <sys/types.h>
66 #include "glib-compat-private.h"
70 #define GST_CAT_DEFAULT GST_CAT_PLUGIN_LOADING
72 static guint _num_static_plugins; /* 0 */
73 static GstPluginDesc *_static_plugins; /* NULL */
74 static gboolean _gst_plugin_inited;
76 /* static variables for segfault handling of plugin loading */
77 static char *_gst_plugin_fault_handler_filename = NULL;
79 /* list of valid licenses.
80 * One of these must be specified or the plugin won't be loaded
81 * Contact gstreamer-devel@lists.sourceforge.net if your license should be
84 * GPL: http://www.gnu.org/copyleft/gpl.html
85 * LGPL: http://www.gnu.org/copyleft/lesser.html
86 * QPL: http://www.trolltech.com/licenses/qpl.html
87 * MPL: http://www.opensource.org/licenses/mozilla1.1.php
88 * MIT/X11: http://www.opensource.org/licenses/mit-license.php
89 * 3-clause BSD: http://www.opensource.org/licenses/bsd-license.php
91 static const gchar *valid_licenses[] = {
92 "LGPL", /* GNU Lesser General Public License */
93 "GPL", /* GNU General Public License */
94 "QPL", /* Trolltech Qt Public License */
95 "GPL/QPL", /* Combi-license of GPL + QPL */
96 "MPL", /* MPL 1.1 license */
97 "BSD", /* 3-clause BSD license */
98 "MIT/X11", /* MIT/X11 license */
99 "Proprietary", /* Proprietary license */
100 GST_LICENSE_UNKNOWN, /* some other license */
104 static GstPlugin *gst_plugin_register_func (GstPlugin * plugin,
105 const GstPluginDesc * desc, gpointer user_data);
106 static void gst_plugin_desc_copy (GstPluginDesc * dest,
107 const GstPluginDesc * src);
109 static void gst_plugin_ext_dep_free (GstPluginDep * dep);
111 G_DEFINE_TYPE (GstPlugin, gst_plugin, GST_TYPE_OBJECT);
114 gst_plugin_init (GstPlugin * plugin)
117 G_TYPE_INSTANCE_GET_PRIVATE (plugin, GST_TYPE_PLUGIN, GstPluginPrivate);
121 gst_plugin_finalize (GObject * object)
123 GstPlugin *plugin = GST_PLUGIN_CAST (object);
124 GstRegistry *registry = gst_registry_get_default ();
127 GST_DEBUG ("finalizing plugin %" GST_PTR_FORMAT, plugin);
128 for (g = registry->plugins; g; g = g->next) {
129 if (g->data == (gpointer) plugin) {
130 g_warning ("removing plugin that is still in registry");
133 g_free (plugin->filename);
134 g_free (plugin->basename);
136 g_list_foreach (plugin->priv->deps, (GFunc) gst_plugin_ext_dep_free, NULL);
137 g_list_free (plugin->priv->deps);
138 plugin->priv->deps = NULL;
140 if (plugin->priv->cache_data) {
141 gst_structure_free (plugin->priv->cache_data);
144 G_OBJECT_CLASS (gst_plugin_parent_class)->finalize (object);
148 gst_plugin_class_init (GstPluginClass * klass)
150 G_OBJECT_CLASS (klass)->finalize = gst_plugin_finalize;
152 g_type_class_add_private (klass, sizeof (GstPluginPrivate));
156 gst_plugin_error_quark (void)
158 static GQuark quark = 0;
161 quark = g_quark_from_static_string ("gst_plugin_error");
165 #ifndef GST_REMOVE_DEPRECATED
166 /* this function can be called in the GCC constructor extension, before
167 * the _gst_plugin_initialize() was called. In that case, we store the
168 * plugin description in a list to initialize it when we open the main
170 * When the main module is known, we can register the plugin right away.
173 _gst_plugin_register_static (GstPluginDesc * desc)
175 g_return_if_fail (desc != NULL);
177 if (!_gst_plugin_inited) {
178 /* We can't use any GLib functions here, since g_thread_init hasn't been
179 * called yet, and we can't call it here either, or programs that don't
180 * guard their g_thread_init calls in main() will just abort */
181 ++_num_static_plugins;
183 realloc (_static_plugins, _num_static_plugins * sizeof (GstPluginDesc));
184 /* assume strings in the GstPluginDesc are static const or live forever */
185 _static_plugins[_num_static_plugins - 1] = *desc;
187 gst_plugin_register_static (desc->major_version, desc->minor_version,
188 desc->name, desc->description, desc->plugin_init, desc->version,
189 desc->license, desc->source, desc->package, desc->origin);
195 * gst_plugin_register_static:
196 * @major_version: the major version number of the GStreamer core that the
197 * plugin was compiled for, you can just use GST_VERSION_MAJOR here
198 * @minor_version: the minor version number of the GStreamer core that the
199 * plugin was compiled for, you can just use GST_VERSION_MINOR here
200 * @name: a unique name of the plugin (ideally prefixed with an application- or
201 * library-specific namespace prefix in order to avoid name conflicts in
202 * case a similar plugin with the same name ever gets added to GStreamer)
203 * @description: description of the plugin
204 * @init_func: pointer to the init function of this plugin.
205 * @version: version string of the plugin
206 * @license: effective license of plugin. Must be one of the approved licenses
207 * (see #GstPluginDesc above) or the plugin will not be registered.
208 * @source: source module plugin belongs to
209 * @package: shipped package plugin belongs to
210 * @origin: URL to provider of plugin
212 * Registers a static plugin, ie. a plugin which is private to an application
213 * or library and contained within the application or library (as opposed to
214 * being shipped as a separate module file).
216 * You must make sure that GStreamer has been initialised (with gst_init() or
217 * via gst_init_get_option_group()) before calling this function.
219 * Returns: TRUE if the plugin was registered correctly, otherwise FALSE.
224 gst_plugin_register_static (gint major_version, gint minor_version,
225 const gchar * name, const gchar * description, GstPluginInitFunc init_func,
226 const gchar * version, const gchar * license, const gchar * source,
227 const gchar * package, const gchar * origin)
229 GstPluginDesc desc = { major_version, minor_version, name, description,
230 init_func, version, license, source, package, origin,
233 gboolean res = FALSE;
235 g_return_val_if_fail (name != NULL, FALSE);
236 g_return_val_if_fail (description != NULL, FALSE);
237 g_return_val_if_fail (init_func != NULL, FALSE);
238 g_return_val_if_fail (version != NULL, FALSE);
239 g_return_val_if_fail (license != NULL, FALSE);
240 g_return_val_if_fail (source != NULL, FALSE);
241 g_return_val_if_fail (package != NULL, FALSE);
242 g_return_val_if_fail (origin != NULL, FALSE);
244 /* make sure gst_init() has been called */
245 g_return_val_if_fail (_gst_plugin_inited != FALSE, FALSE);
247 GST_LOG ("attempting to load static plugin \"%s\" now...", name);
248 plugin = g_object_newv (GST_TYPE_PLUGIN, 0, NULL);
249 if (gst_plugin_register_func (plugin, &desc, NULL) != NULL) {
250 GST_INFO ("registered static plugin \"%s\"", name);
251 res = gst_default_registry_add_plugin (plugin);
252 GST_INFO ("added static plugin \"%s\", result: %d", name, res);
258 * gst_plugin_register_static_full:
259 * @major_version: the major version number of the GStreamer core that the
260 * plugin was compiled for, you can just use GST_VERSION_MAJOR here
261 * @minor_version: the minor version number of the GStreamer core that the
262 * plugin was compiled for, you can just use GST_VERSION_MINOR here
263 * @name: a unique name of the plugin (ideally prefixed with an application- or
264 * library-specific namespace prefix in order to avoid name conflicts in
265 * case a similar plugin with the same name ever gets added to GStreamer)
266 * @description: description of the plugin
267 * @init_full_func: pointer to the init function with user data of this plugin.
268 * @version: version string of the plugin
269 * @license: effective license of plugin. Must be one of the approved licenses
270 * (see #GstPluginDesc above) or the plugin will not be registered.
271 * @source: source module plugin belongs to
272 * @package: shipped package plugin belongs to
273 * @origin: URL to provider of plugin
274 * @user_data: gpointer to user data
276 * Registers a static plugin, ie. a plugin which is private to an application
277 * or library and contained within the application or library (as opposed to
278 * being shipped as a separate module file) with a #GstPluginInitFullFunc
279 * which allows user data to be passed to the callback function (useful
282 * You must make sure that GStreamer has been initialised (with gst_init() or
283 * via gst_init_get_option_group()) before calling this function.
285 * Returns: TRUE if the plugin was registered correctly, otherwise FALSE.
291 gst_plugin_register_static_full (gint major_version, gint minor_version,
292 const gchar * name, const gchar * description,
293 GstPluginInitFullFunc init_full_func, const gchar * version,
294 const gchar * license, const gchar * source, const gchar * package,
295 const gchar * origin, gpointer user_data)
297 GstPluginDesc desc = { major_version, minor_version, name, description,
298 (GstPluginInitFunc) init_full_func, version, license, source, package,
302 gboolean res = FALSE;
304 g_return_val_if_fail (name != NULL, FALSE);
305 g_return_val_if_fail (description != NULL, FALSE);
306 g_return_val_if_fail (init_full_func != NULL, FALSE);
307 g_return_val_if_fail (version != NULL, FALSE);
308 g_return_val_if_fail (license != NULL, FALSE);
309 g_return_val_if_fail (source != NULL, FALSE);
310 g_return_val_if_fail (package != NULL, FALSE);
311 g_return_val_if_fail (origin != NULL, FALSE);
313 /* make sure gst_init() has been called */
314 g_return_val_if_fail (_gst_plugin_inited != FALSE, FALSE);
316 GST_LOG ("attempting to load static plugin \"%s\" now...", name);
317 plugin = g_object_newv (GST_TYPE_PLUGIN, 0, NULL);
318 if (gst_plugin_register_func (plugin, &desc, user_data) != NULL) {
319 GST_INFO ("registered static plugin \"%s\"", name);
320 res = gst_default_registry_add_plugin (plugin);
321 GST_INFO ("added static plugin \"%s\", result: %d", name, res);
327 _gst_plugin_initialize (void)
331 _gst_plugin_inited = TRUE;
333 /* now register all static plugins */
334 GST_INFO ("registering %u static plugins", _num_static_plugins);
335 for (i = 0; i < _num_static_plugins; ++i) {
336 gst_plugin_register_static (_static_plugins[i].major_version,
337 _static_plugins[i].minor_version, _static_plugins[i].name,
338 _static_plugins[i].description, _static_plugins[i].plugin_init,
339 _static_plugins[i].version, _static_plugins[i].license,
340 _static_plugins[i].source, _static_plugins[i].package,
341 _static_plugins[i].origin);
344 if (_static_plugins) {
345 free (_static_plugins);
346 _static_plugins = NULL;
347 _num_static_plugins = 0;
351 /* this function could be extended to check if the plugin license matches the
352 * applications license (would require the app to register its license somehow).
353 * We'll wait for someone who's interested in it to code it :)
356 gst_plugin_check_license (const gchar * license)
358 const gchar **check_license = valid_licenses;
360 g_assert (check_license);
362 while (*check_license) {
363 if (strcmp (license, *check_license) == 0)
371 gst_plugin_check_version (gint major, gint minor)
373 /* return NULL if the major and minor version numbers are not compatible */
375 if (major != GST_VERSION_MAJOR || minor != GST_VERSION_MINOR)
382 gst_plugin_register_func (GstPlugin * plugin, const GstPluginDesc * desc,
385 if (!gst_plugin_check_version (desc->major_version, desc->minor_version)) {
387 GST_WARNING ("plugin \"%s\" has incompatible version, not loading",
392 if (!desc->license || !desc->description || !desc->source ||
393 !desc->package || !desc->origin) {
395 GST_WARNING ("plugin \"%s\" has incorrect GstPluginDesc, not loading",
400 if (!gst_plugin_check_license (desc->license)) {
402 GST_WARNING ("plugin \"%s\" has invalid license \"%s\", not loading",
403 plugin->filename, desc->license);
408 GST_LOG ("plugin \"%s\" looks good", GST_STR_NULL (plugin->filename));
410 gst_plugin_desc_copy (&plugin->desc, desc);
413 if (!(((GstPluginInitFullFunc) (desc->plugin_init)) (plugin, user_data))) {
415 GST_WARNING ("plugin \"%s\" failed to initialise", plugin->filename);
416 plugin->module = NULL;
420 if (!((desc->plugin_init) (plugin))) {
422 GST_WARNING ("plugin \"%s\" failed to initialise", plugin->filename);
423 plugin->module = NULL;
429 GST_LOG ("plugin \"%s\" initialised", GST_STR_NULL (plugin->filename));
434 #ifdef HAVE_SIGACTION
435 static struct sigaction oldaction;
436 static gboolean _gst_plugin_fault_handler_is_setup = FALSE;
439 * _gst_plugin_fault_handler_restore:
440 * segfault handler restorer
443 _gst_plugin_fault_handler_restore (void)
445 if (!_gst_plugin_fault_handler_is_setup)
448 _gst_plugin_fault_handler_is_setup = FALSE;
450 sigaction (SIGSEGV, &oldaction, NULL);
454 * _gst_plugin_fault_handler_sighandler:
455 * segfault handler implementation
458 _gst_plugin_fault_handler_sighandler (int signum)
460 /* We need to restore the fault handler or we'll keep getting it */
461 _gst_plugin_fault_handler_restore ();
465 g_print ("\nERROR: ");
466 g_print ("Caught a segmentation fault while loading plugin file:\n");
467 g_print ("%s\n\n", _gst_plugin_fault_handler_filename);
468 g_print ("Please either:\n");
469 g_print ("- remove it and restart.\n");
470 g_print ("- run with --gst-disable-segtrap and debug.\n");
474 g_print ("Caught unhandled signal on plugin loading\n");
480 * _gst_plugin_fault_handler_setup:
481 * sets up the segfault handler
484 _gst_plugin_fault_handler_setup (void)
486 struct sigaction action;
488 /* if asked to leave segfaults alone, just return */
489 if (!gst_segtrap_is_enabled ())
492 if (_gst_plugin_fault_handler_is_setup)
495 _gst_plugin_fault_handler_is_setup = TRUE;
497 memset (&action, 0, sizeof (action));
498 action.sa_handler = _gst_plugin_fault_handler_sighandler;
500 sigaction (SIGSEGV, &action, &oldaction);
502 #else /* !HAVE_SIGACTION */
504 _gst_plugin_fault_handler_restore (void)
509 _gst_plugin_fault_handler_setup (void)
512 #endif /* HAVE_SIGACTION */
514 static GStaticMutex gst_plugin_loading_mutex = G_STATIC_MUTEX_INIT;
516 #define CHECK_PLUGIN_DESC_FIELD(desc,field,fn) \
517 if (G_UNLIKELY ((desc)->field == NULL)) { \
518 GST_ERROR ("GstPluginDesc for '%s' has no %s", fn, G_STRINGIFY (field)); \
522 * gst_plugin_load_file:
523 * @filename: the plugin filename to load
524 * @error: pointer to a NULL-valued GError
526 * Loads the given plugin and refs it. Caller needs to unref after use.
528 * Returns: a reference to the existing loaded GstPlugin, a reference to the
529 * newly-loaded GstPlugin, or NULL if an error occurred.
532 gst_plugin_load_file (const gchar * filename, GError ** error)
538 struct stat file_status;
539 GstRegistry *registry;
540 gboolean new_plugin = TRUE;
542 g_return_val_if_fail (filename != NULL, NULL);
544 registry = gst_registry_get_default ();
545 g_static_mutex_lock (&gst_plugin_loading_mutex);
547 plugin = gst_registry_lookup (registry, filename);
549 if (plugin->module) {
551 g_static_mutex_unlock (&gst_plugin_loading_mutex);
554 /* load plugin and update fields */
559 GST_CAT_DEBUG (GST_CAT_PLUGIN_LOADING, "attempt to load plugin \"%s\"",
562 if (g_module_supported () == FALSE) {
563 GST_CAT_DEBUG (GST_CAT_PLUGIN_LOADING, "module loading not supported");
566 GST_PLUGIN_ERROR_MODULE, "Dynamic loading not supported");
570 if (g_stat (filename, &file_status)) {
571 GST_CAT_DEBUG (GST_CAT_PLUGIN_LOADING, "problem accessing file");
574 GST_PLUGIN_ERROR_MODULE, "Problem accessing file %s: %s", filename,
579 module = g_module_open (filename, G_MODULE_BIND_LOCAL);
580 if (module == NULL) {
581 GST_CAT_WARNING (GST_CAT_PLUGIN_LOADING, "module_open failed: %s",
584 GST_PLUGIN_ERROR, GST_PLUGIN_ERROR_MODULE, "Opening module failed: %s",
586 /* If we failed to open the shared object, then it's probably because a
587 * plugin is linked against the wrong libraries. Print out an easy-to-see
588 * message in this case. */
589 g_warning ("Failed to load plugin '%s': %s", filename, g_module_error ());
594 plugin = g_object_newv (GST_TYPE_PLUGIN, 0, NULL);
595 plugin->file_mtime = file_status.st_mtime;
596 plugin->file_size = file_status.st_size;
597 plugin->filename = g_strdup (filename);
598 plugin->basename = g_path_get_basename (filename);
600 plugin->module = module;
602 ret = g_module_symbol (module, "gst_plugin_desc", &ptr);
604 GST_DEBUG ("Could not find plugin entry point in \"%s\"", filename);
607 GST_PLUGIN_ERROR_MODULE,
608 "File \"%s\" is not a GStreamer plugin", filename);
609 g_module_close (module);
612 plugin->orig_desc = (GstPluginDesc *) ptr;
615 /* check plugin description: complain about bad values but accept them, to
616 * maintain backwards compatibility (FIXME: 0.11) */
617 CHECK_PLUGIN_DESC_FIELD (plugin->orig_desc, name, filename);
618 CHECK_PLUGIN_DESC_FIELD (plugin->orig_desc, description, filename);
619 CHECK_PLUGIN_DESC_FIELD (plugin->orig_desc, version, filename);
620 CHECK_PLUGIN_DESC_FIELD (plugin->orig_desc, license, filename);
621 CHECK_PLUGIN_DESC_FIELD (plugin->orig_desc, source, filename);
622 CHECK_PLUGIN_DESC_FIELD (plugin->orig_desc, package, filename);
623 CHECK_PLUGIN_DESC_FIELD (plugin->orig_desc, origin, filename);
626 GST_LOG ("Plugin %p for file \"%s\" prepared, calling entry function...",
629 /* this is where we load the actual .so, so let's trap SIGSEGV */
630 _gst_plugin_fault_handler_setup ();
631 _gst_plugin_fault_handler_filename = plugin->filename;
633 GST_LOG ("Plugin %p for file \"%s\" prepared, registering...",
636 if (!gst_plugin_register_func (plugin, plugin->orig_desc, NULL)) {
637 /* remove signal handler */
638 _gst_plugin_fault_handler_restore ();
639 GST_DEBUG ("gst_plugin_register_func failed for plugin \"%s\"", filename);
643 GST_PLUGIN_ERROR_MODULE,
644 "File \"%s\" appears to be a GStreamer plugin, but it failed to initialize",
646 g_module_close (module);
650 /* remove signal handler */
651 _gst_plugin_fault_handler_restore ();
652 _gst_plugin_fault_handler_filename = NULL;
653 GST_INFO ("plugin \"%s\" loaded", plugin->filename);
656 gst_object_ref (plugin);
657 gst_default_registry_add_plugin (plugin);
660 g_static_mutex_unlock (&gst_plugin_loading_mutex);
666 gst_object_unref (plugin);
667 g_static_mutex_unlock (&gst_plugin_loading_mutex);
673 gst_plugin_desc_copy (GstPluginDesc * dest, const GstPluginDesc * src)
675 dest->major_version = src->major_version;
676 dest->minor_version = src->minor_version;
677 dest->name = g_intern_string (src->name);
678 dest->description = g_intern_string (src->description);
679 dest->plugin_init = src->plugin_init;
680 dest->version = g_intern_string (src->version);
681 dest->license = g_intern_string (src->license);
682 dest->source = g_intern_string (src->source);
683 dest->package = g_intern_string (src->package);
684 dest->origin = g_intern_string (src->origin);
688 * gst_plugin_get_name:
689 * @plugin: plugin to get the name of
691 * Get the short name of the plugin
693 * Returns: the name of the plugin
696 gst_plugin_get_name (GstPlugin * plugin)
698 g_return_val_if_fail (plugin != NULL, NULL);
700 return plugin->desc.name;
704 * gst_plugin_get_description:
705 * @plugin: plugin to get long name of
707 * Get the long descriptive name of the plugin
709 * Returns: the long name of the plugin
711 G_CONST_RETURN gchar *
712 gst_plugin_get_description (GstPlugin * plugin)
714 g_return_val_if_fail (plugin != NULL, NULL);
716 return plugin->desc.description;
720 * gst_plugin_get_filename:
721 * @plugin: plugin to get the filename of
723 * get the filename of the plugin
725 * Returns: the filename of the plugin
727 G_CONST_RETURN gchar *
728 gst_plugin_get_filename (GstPlugin * plugin)
730 g_return_val_if_fail (plugin != NULL, NULL);
732 return plugin->filename;
736 * gst_plugin_get_version:
737 * @plugin: plugin to get the version of
739 * get the version of the plugin
741 * Returns: the version of the plugin
743 G_CONST_RETURN gchar *
744 gst_plugin_get_version (GstPlugin * plugin)
746 g_return_val_if_fail (plugin != NULL, NULL);
748 return plugin->desc.version;
752 * gst_plugin_get_license:
753 * @plugin: plugin to get the license of
755 * get the license of the plugin
757 * Returns: the license of the plugin
759 G_CONST_RETURN gchar *
760 gst_plugin_get_license (GstPlugin * plugin)
762 g_return_val_if_fail (plugin != NULL, NULL);
764 return plugin->desc.license;
768 * gst_plugin_get_source:
769 * @plugin: plugin to get the source of
771 * get the source module the plugin belongs to.
773 * Returns: the source of the plugin
775 G_CONST_RETURN gchar *
776 gst_plugin_get_source (GstPlugin * plugin)
778 g_return_val_if_fail (plugin != NULL, NULL);
780 return plugin->desc.source;
784 * gst_plugin_get_package:
785 * @plugin: plugin to get the package of
787 * get the package the plugin belongs to.
789 * Returns: the package of the plugin
791 G_CONST_RETURN gchar *
792 gst_plugin_get_package (GstPlugin * plugin)
794 g_return_val_if_fail (plugin != NULL, NULL);
796 return plugin->desc.package;
800 * gst_plugin_get_origin:
801 * @plugin: plugin to get the origin of
803 * get the URL where the plugin comes from
805 * Returns: the origin of the plugin
807 G_CONST_RETURN gchar *
808 gst_plugin_get_origin (GstPlugin * plugin)
810 g_return_val_if_fail (plugin != NULL, NULL);
812 return plugin->desc.origin;
816 * gst_plugin_get_module:
817 * @plugin: plugin to query
819 * Gets the #GModule of the plugin. If the plugin isn't loaded yet, NULL is
822 * Returns: module belonging to the plugin or NULL if the plugin isn't
826 gst_plugin_get_module (GstPlugin * plugin)
828 g_return_val_if_fail (plugin != NULL, NULL);
830 return plugin->module;
834 * gst_plugin_is_loaded:
835 * @plugin: plugin to query
837 * queries if the plugin is loaded into memory
839 * Returns: TRUE is loaded, FALSE otherwise
842 gst_plugin_is_loaded (GstPlugin * plugin)
844 g_return_val_if_fail (plugin != NULL, FALSE);
846 return (plugin->module != NULL || plugin->filename == NULL);
850 * gst_plugin_get_cache_data:
853 * Gets the plugin specific data cache. If it is %NULL there is no cached data
854 * stored. This is the case when the registry is getting rebuilt.
856 * Returns: The cached data as a #GstStructure or %NULL.
860 G_CONST_RETURN GstStructure *
861 gst_plugin_get_cache_data (GstPlugin * plugin)
863 g_return_val_if_fail (GST_IS_PLUGIN (plugin), NULL);
865 return plugin->priv->cache_data;
869 * gst_plugin_set_cache_data:
871 * @cache_data: a structure containing the data to cache
873 * Adds plugin specific data to cache. Passes the ownership of the structure to
876 * The cache is flushed every time the registry is rebuilt.
881 gst_plugin_set_cache_data (GstPlugin * plugin, GstStructure * cache_data)
883 g_return_if_fail (GST_IS_PLUGIN (plugin));
884 g_return_if_fail (GST_IS_STRUCTURE (cache_data));
886 if (plugin->priv->cache_data) {
887 gst_structure_free (plugin->priv->cache_data);
889 plugin->priv->cache_data = cache_data;
894 * gst_plugin_feature_list:
895 * @plugin: plugin to query
896 * @filter: the filter to use
897 * @first: only return first match
898 * @user_data: user data passed to the filter function
900 * Runs a filter against all plugin features and returns a GList with
901 * the results. If the first flag is set, only the first match is
902 * returned (as a list with a single object).
904 * Returns: a GList of features, g_list_free after use.
907 gst_plugin_feature_filter (GstPlugin * plugin,
908 GstPluginFeatureFilter filter, gboolean first, gpointer user_data)
913 list = gst_filter_run (plugin->features, (GstFilterFunc) filter, first,
915 for (g = list; g; g = g->next) {
916 gst_object_ref (plugin);
924 GstPluginFeatureFilter filter;
932 _feature_filter (GstPlugin * plugin, gpointer user_data)
935 FeatureFilterData *data = (FeatureFilterData *) user_data;
937 result = gst_plugin_feature_filter (plugin, data->filter, data->first,
940 data->result = g_list_concat (data->result, result);
947 * gst_plugin_list_feature_filter:
948 * @list: a #GList of plugins to query
949 * @filter: the filter function to use
950 * @first: only return first match
951 * @user_data: user data passed to the filter function
953 * Runs a filter against all plugin features of the plugins in the given
954 * list and returns a GList with the results.
955 * If the first flag is set, only the first match is
956 * returned (as a list with a single object).
958 * Returns: a GList of features, g_list_free after use.
961 gst_plugin_list_feature_filter (GList * list,
962 GstPluginFeatureFilter filter, gboolean first, gpointer user_data)
964 FeatureFilterData data;
967 data.filter = filter;
969 data.user_data = user_data;
972 result = gst_filter_run (list, (GstFilterFunc) _feature_filter, first, &data);
973 g_list_free (result);
980 * gst_plugin_name_filter:
981 * @plugin: the plugin to check
982 * @name: the name of the plugin
984 * A standard filter that returns TRUE when the plugin is of the
987 * Returns: TRUE if the plugin is of the given name.
990 gst_plugin_name_filter (GstPlugin * plugin, const gchar * name)
992 return (plugin->desc.name && !strcmp (plugin->desc.name, name));
997 * gst_plugin_find_feature:
998 * @plugin: plugin to get the feature from
999 * @name: The name of the feature to find
1000 * @type: The type of the feature to find
1002 * Find a feature of the given name and type in the given plugin.
1004 * Returns: a GstPluginFeature or NULL if the feature was not found.
1007 gst_plugin_find_feature (GstPlugin * plugin, const gchar * name, GType type)
1010 GstPluginFeature *result = NULL;
1011 GstTypeNameData data;
1013 g_return_val_if_fail (name != NULL, NULL);
1018 walk = gst_filter_run (plugin->features,
1019 (GstFilterFunc) gst_plugin_feature_type_name_filter, TRUE, &data);
1022 result = GST_PLUGIN_FEATURE (walk->data);
1024 gst_object_ref (result);
1025 gst_plugin_feature_list_free (walk);
1034 gst_plugin_feature_name_filter (GstPluginFeature * feature, const gchar * name)
1036 return !strcmp (name, GST_PLUGIN_FEATURE_NAME (feature));
1042 * gst_plugin_find_feature_by_name:
1043 * @plugin: plugin to get the feature from
1044 * @name: The name of the feature to find
1046 * Find a feature of the given name in the given plugin.
1048 * Returns: a GstPluginFeature or NULL if the feature was not found.
1051 gst_plugin_find_feature_by_name (GstPlugin * plugin, const gchar * name)
1054 GstPluginFeature *result = NULL;
1056 g_return_val_if_fail (name != NULL, NULL);
1058 walk = gst_filter_run (plugin->features,
1059 (GstFilterFunc) gst_plugin_feature_name_filter, TRUE, (void *) name);
1062 result = GST_PLUGIN_FEATURE (walk->data);
1064 gst_object_ref (result);
1065 gst_plugin_feature_list_free (walk);
1073 * gst_plugin_load_by_name:
1074 * @name: name of plugin to load
1076 * Load the named plugin. Refs the plugin.
1078 * Returns: A reference to a loaded plugin, or NULL on error.
1081 gst_plugin_load_by_name (const gchar * name)
1083 GstPlugin *plugin, *newplugin;
1084 GError *error = NULL;
1086 GST_DEBUG ("looking up plugin %s in default registry", name);
1087 plugin = gst_registry_find_plugin (gst_registry_get_default (), name);
1089 GST_DEBUG ("loading plugin %s from file %s", name, plugin->filename);
1090 newplugin = gst_plugin_load_file (plugin->filename, &error);
1091 gst_object_unref (plugin);
1094 GST_WARNING ("load_plugin error: %s", error->message);
1095 g_error_free (error);
1098 /* newplugin was reffed by load_file */
1102 GST_DEBUG ("Could not find plugin %s in registry", name);
1108 * @plugin: plugin to load
1110 * Loads @plugin. Note that the *return value* is the loaded plugin; @plugin is
1111 * untouched. The normal use pattern of this function goes like this:
1114 * GstPlugin *loaded_plugin;
1115 * loaded_plugin = gst_plugin_load (plugin);
1116 * // presumably, we're no longer interested in the potentially-unloaded plugin
1117 * gst_object_unref (plugin);
1118 * plugin = loaded_plugin;
1121 * Returns: A reference to a loaded plugin, or NULL on error.
1124 gst_plugin_load (GstPlugin * plugin)
1126 GError *error = NULL;
1127 GstPlugin *newplugin;
1129 if (gst_plugin_is_loaded (plugin)) {
1133 if (!(newplugin = gst_plugin_load_file (plugin->filename, &error)))
1140 GST_WARNING ("load_plugin error: %s", error->message);
1141 g_error_free (error);
1147 * gst_plugin_list_free:
1148 * @list: list of #GstPlugin
1150 * Unrefs each member of @list, then frees the list.
1153 gst_plugin_list_free (GList * list)
1157 for (g = list; g; g = g->next) {
1158 gst_object_unref (GST_PLUGIN_CAST (g->data));
1163 /* ===== plugin dependencies ===== */
1166 * ENV + xyz where ENV can contain multiple values separated by SEPARATOR
1167 * xyz may be "" (if ENV contains path to file rather than dir)
1168 * ENV + *xyz same as above, but xyz acts as suffix filter
1169 * ENV + xyz* same as above, but xyz acts as prefix filter (is this needed?)
1170 * ENV + *xyz* same as above, but xyz acts as strstr filter (is this needed?)
1172 * same as above, with additional paths hard-coded at compile-time:
1173 * - only check paths + ... if ENV is not set or yields not paths
1174 * - always check paths + ... in addition to ENV
1176 * When user specifies set of environment variables, he/she may also use e.g.
1177 * "HOME/.mystuff/plugins", and we'll expand the content of $HOME with the
1181 /* we store in registry:
1184 * - environment variables (array of strings)
1185 * - last hash of env variable contents (uint) (so we can avoid doing stats
1186 * if one of the env vars has changed; premature optimisation galore)
1187 * - hard-coded paths (array of strings)
1188 * - xyz filename/suffix/prefix strings (array of strings)
1190 * - last hash of file/dir stats (int)
1192 * (= struct GstPluginDep)
1196 gst_plugin_ext_dep_get_env_vars_hash (GstPlugin * plugin, GstPluginDep * dep)
1201 /* there's no deeper logic to what we do here; all we want to know (when
1202 * checking if the plugin needs to be rescanned) is whether the content of
1203 * one of the environment variables in the list is different from when it
1204 * was last scanned */
1206 for (e = dep->env_vars; e != NULL && *e != NULL; ++e) {
1210 /* order matters: "val",NULL needs to yield a different hash than
1211 * NULL,"val", so do a shift here whether the var is set or not */
1214 /* want environment variable at beginning of string */
1215 if (!g_ascii_isalnum (**e)) {
1216 GST_WARNING_OBJECT (plugin, "string prefix is not a valid environment "
1217 "variable string: %s", *e);
1221 /* user is allowed to specify e.g. "HOME/.pitivi/plugins" */
1222 g_strlcpy (env_var, *e, sizeof (env_var));
1223 g_strdelimit (env_var, "/\\", '\0');
1225 if ((val = g_getenv (env_var)))
1226 hash += g_str_hash (val);
1233 _priv_plugin_deps_env_vars_changed (GstPlugin * plugin)
1237 for (l = plugin->priv->deps; l != NULL; l = l->next) {
1238 GstPluginDep *dep = l->data;
1240 if (dep->env_hash != gst_plugin_ext_dep_get_env_vars_hash (plugin, dep))
1248 gst_plugin_ext_dep_extract_env_vars_paths (GstPlugin * plugin,
1252 GList *paths = NULL;
1254 for (evars = dep->env_vars; evars != NULL && *evars != NULL; ++evars) {
1258 /* want environment variable at beginning of string */
1259 if (!g_ascii_isalnum (**evars)) {
1260 GST_WARNING_OBJECT (plugin, "string prefix is not a valid environment "
1261 "variable string: %s", *evars);
1265 /* user is allowed to specify e.g. "HOME/.pitivi/plugins", which we want to
1266 * split into the env_var name component and the path component */
1267 components = g_strsplit_set (*evars, "/\\", 2);
1268 g_assert (components != NULL);
1270 e = g_getenv (components[0]);
1271 GST_LOG_OBJECT (plugin, "expanding %s = '%s' (path suffix: %s)",
1272 components[0], GST_STR_NULL (e), GST_STR_NULL (components[1]));
1274 if (components[1] != NULL) {
1275 g_strdelimit (components[1], "/\\", G_DIR_SEPARATOR);
1278 if (e != NULL && *e != '\0') {
1282 arr = g_strsplit (e, G_SEARCHPATH_SEPARATOR_S, -1);
1284 for (i = 0; arr != NULL && arr[i] != NULL; ++i) {
1287 if (!g_path_is_absolute (arr[i])) {
1288 GST_INFO_OBJECT (plugin, "ignoring environment variable content '%s'"
1289 ": either not an absolute path or not a path at all", arr[i]);
1293 if (components[1] != NULL) {
1294 full_path = g_build_filename (arr[i], components[1], NULL);
1296 full_path = g_strdup (arr[i]);
1299 if (!g_list_find_custom (paths, full_path, (GCompareFunc) strcmp)) {
1300 GST_LOG_OBJECT (plugin, "path: '%s'", full_path);
1301 paths = g_list_prepend (paths, full_path);
1304 GST_LOG_OBJECT (plugin, "path: '%s' (duplicate,ignoring)", full_path);
1312 g_strfreev (components);
1315 GST_LOG_OBJECT (plugin, "Extracted %d paths from environment",
1316 g_list_length (paths));
1322 gst_plugin_ext_dep_get_hash_from_stat_entry (struct stat *s)
1324 if (!(s->st_mode & (S_IFDIR | S_IFREG)))
1327 /* completely random formula */
1328 return ((s->st_size << 3) + (s->st_mtime << 5)) ^ s->st_ctime;
1332 gst_plugin_ext_dep_direntry_matches (GstPlugin * plugin, const gchar * entry,
1333 const gchar ** filenames, GstPluginDependencyFlags flags)
1335 /* no filenames specified, match all entries for now (could probably
1336 * optimise by just taking the dir stat hash or so) */
1337 if (filenames == NULL || *filenames == NULL || **filenames == '\0')
1340 while (*filenames != NULL) {
1342 if (((flags & GST_PLUGIN_DEPENDENCY_FLAG_FILE_NAME_IS_SUFFIX)) &&
1343 g_str_has_suffix (entry, *filenames)) {
1345 /* else it's an exact match that's needed */
1346 } else if (strcmp (entry, *filenames) == 0) {
1349 GST_LOG ("%s does not match %s, flags=0x%04x", entry, *filenames, flags);
1356 gst_plugin_ext_dep_scan_dir_and_match_names (GstPlugin * plugin,
1357 const gchar * path, const gchar ** filenames,
1358 GstPluginDependencyFlags flags, int depth)
1361 gboolean recurse_dirs;
1366 recurse_dirs = !!(flags & GST_PLUGIN_DEPENDENCY_FLAG_RECURSE);
1368 dir = g_dir_open (path, 0, &err);
1370 GST_DEBUG_OBJECT (plugin, "g_dir_open(%s) failed: %s", path, err->message);
1375 /* FIXME: we're assuming here that we always get the directory entries in
1376 * the same order, and not in a random order */
1377 while ((entry = g_dir_read_name (dir))) {
1378 gboolean have_match;
1384 gst_plugin_ext_dep_direntry_matches (plugin, entry, filenames, flags);
1386 /* avoid the stat if possible */
1387 if (!have_match && !recurse_dirs)
1390 full_path = g_build_filename (path, entry, NULL);
1391 if (g_stat (full_path, &s) < 0) {
1392 fhash = (guint) - 1;
1393 GST_LOG_OBJECT (plugin, "stat: %s (error: %s)", full_path,
1394 g_strerror (errno));
1395 } else if (have_match) {
1396 fhash = gst_plugin_ext_dep_get_hash_from_stat_entry (&s);
1397 GST_LOG_OBJECT (plugin, "stat: %s (result: %u)", full_path, fhash);
1398 } else if ((s.st_mode & (S_IFDIR))) {
1399 fhash = gst_plugin_ext_dep_scan_dir_and_match_names (plugin, full_path,
1400 filenames, flags, depth + 1);
1402 /* it's not a name match, we want to recurse, but it's not a directory */
1407 hash = (hash + fhash) << 1;
1416 gst_plugin_ext_dep_scan_path_with_filenames (GstPlugin * plugin,
1417 const gchar * path, const gchar ** filenames,
1418 GstPluginDependencyFlags flags)
1420 const gchar *empty_filenames[] = { "", NULL };
1421 gboolean recurse_into_dirs, partial_names;
1424 /* to avoid special-casing below (FIXME?) */
1425 if (filenames == NULL || *filenames == NULL)
1426 filenames = empty_filenames;
1428 recurse_into_dirs = !!(flags & GST_PLUGIN_DEPENDENCY_FLAG_RECURSE);
1429 partial_names = !!(flags & GST_PLUGIN_DEPENDENCY_FLAG_FILE_NAME_IS_SUFFIX);
1431 /* if we can construct the exact paths to check with the data we have, just
1432 * stat them one by one; this is more efficient than opening the directory
1433 * and going through each entry to see if it matches one of our filenames. */
1434 if (!recurse_into_dirs && !partial_names) {
1435 for (i = 0; filenames[i] != NULL; ++i) {
1440 full_path = g_build_filename (path, filenames[i], NULL);
1441 if (g_stat (full_path, &s) < 0) {
1442 fhash = (guint) - 1;
1443 GST_LOG_OBJECT (plugin, "stat: %s (error: %s)", full_path,
1444 g_strerror (errno));
1446 fhash = gst_plugin_ext_dep_get_hash_from_stat_entry (&s);
1447 GST_LOG_OBJECT (plugin, "stat: %s (result: %08x)", full_path, fhash);
1449 hash = (hash + fhash) << 1;
1453 hash = gst_plugin_ext_dep_scan_dir_and_match_names (plugin, path,
1454 filenames, flags, 0);
1461 gst_plugin_ext_dep_get_stat_hash (GstPlugin * plugin, GstPluginDep * dep)
1463 gboolean paths_are_default_only;
1465 guint scan_hash = 0;
1467 GST_LOG_OBJECT (plugin, "start");
1469 paths_are_default_only =
1470 dep->flags & GST_PLUGIN_DEPENDENCY_FLAG_PATHS_ARE_DEFAULT_ONLY;
1472 scan_paths = gst_plugin_ext_dep_extract_env_vars_paths (plugin, dep);
1474 if (scan_paths == NULL || !paths_are_default_only) {
1477 for (paths = dep->paths; paths != NULL && *paths != NULL; ++paths) {
1478 const gchar *path = *paths;
1480 if (!g_list_find_custom (scan_paths, path, (GCompareFunc) strcmp)) {
1481 GST_LOG_OBJECT (plugin, "path: '%s'", path);
1482 scan_paths = g_list_prepend (scan_paths, g_strdup (path));
1484 GST_LOG_OBJECT (plugin, "path: '%s' (duplicate, ignoring)", path);
1489 /* not that the order really matters, but it makes debugging easier */
1490 scan_paths = g_list_reverse (scan_paths);
1492 while (scan_paths != NULL) {
1493 const gchar *path = scan_paths->data;
1495 scan_hash += gst_plugin_ext_dep_scan_path_with_filenames (plugin, path,
1496 (const gchar **) dep->names, dep->flags);
1497 scan_hash = scan_hash << 1;
1499 g_free (scan_paths->data);
1500 scan_paths = g_list_delete_link (scan_paths, scan_paths);
1503 GST_LOG_OBJECT (plugin, "done, scan_hash: %08x", scan_hash);
1508 _priv_plugin_deps_files_changed (GstPlugin * plugin)
1512 for (l = plugin->priv->deps; l != NULL; l = l->next) {
1513 GstPluginDep *dep = l->data;
1515 if (dep->stat_hash != gst_plugin_ext_dep_get_stat_hash (plugin, dep))
1523 gst_plugin_ext_dep_free (GstPluginDep * dep)
1525 g_strfreev (dep->env_vars);
1526 g_strfreev (dep->paths);
1527 g_strfreev (dep->names);
1532 gst_plugin_ext_dep_strv_equal (gchar ** arr1, gchar ** arr2)
1536 if (arr1 == NULL || arr2 == NULL)
1538 for (; *arr1 != NULL && *arr2 != NULL; ++arr1, ++arr2) {
1539 if (strcmp (*arr1, *arr2) != 0)
1542 return (*arr1 == *arr2);
1546 gst_plugin_ext_dep_equals (GstPluginDep * dep, const gchar ** env_vars,
1547 const gchar ** paths, const gchar ** names, GstPluginDependencyFlags flags)
1549 if (dep->flags != flags)
1552 return gst_plugin_ext_dep_strv_equal (dep->env_vars, (gchar **) env_vars) &&
1553 gst_plugin_ext_dep_strv_equal (dep->paths, (gchar **) paths) &&
1554 gst_plugin_ext_dep_strv_equal (dep->names, (gchar **) names);
1558 * gst_plugin_add_dependency:
1559 * @plugin: a #GstPlugin
1560 * @env_vars: NULL-terminated array of environent variables affecting the
1561 * feature set of the plugin (e.g. an environment variable containing
1562 * paths where to look for additional modules/plugins of a library),
1563 * or NULL. Environment variable names may be followed by a path component
1564 * which will be added to the content of the environment variable, e.g.
1565 * "HOME/.mystuff/plugins".
1566 * @paths: NULL-terminated array of directories/paths where dependent files
1568 * @names: NULL-terminated array of file names (or file name suffixes,
1569 * depending on @flags) to be used in combination with the paths from
1570 * @paths and/or the paths extracted from the environment variables in
1571 * @env_vars, or NULL.
1572 * @flags: optional flags, or #GST_PLUGIN_DEPENDENCY_FLAG_NONE
1574 * Make GStreamer aware of external dependencies which affect the feature
1575 * set of this plugin (ie. the elements or typefinders associated with it).
1577 * GStreamer will re-inspect plugins with external dependencies whenever any
1578 * of the external dependencies change. This is useful for plugins which wrap
1579 * other plugin systems, e.g. a plugin which wraps a plugin-based visualisation
1580 * library and makes visualisations available as GStreamer elements, or a
1581 * codec loader which exposes elements and/or caps dependent on what external
1582 * codec libraries are currently installed.
1587 gst_plugin_add_dependency (GstPlugin * plugin, const gchar ** env_vars,
1588 const gchar ** paths, const gchar ** names, GstPluginDependencyFlags flags)
1593 g_return_if_fail (GST_IS_PLUGIN (plugin));
1595 if ((env_vars == NULL || env_vars[0] == NULL) &&
1596 (paths == NULL || paths[0] == NULL)) {
1597 GST_DEBUG_OBJECT (plugin,
1598 "plugin registered empty dependency set. Ignoring");
1602 for (l = plugin->priv->deps; l != NULL; l = l->next) {
1603 if (gst_plugin_ext_dep_equals (l->data, env_vars, paths, names, flags)) {
1604 GST_LOG_OBJECT (plugin, "dependency already registered");
1609 dep = g_new0 (GstPluginDep, 1);
1611 dep->env_vars = g_strdupv ((gchar **) env_vars);
1612 dep->paths = g_strdupv ((gchar **) paths);
1613 dep->names = g_strdupv ((gchar **) names);
1616 dep->env_hash = gst_plugin_ext_dep_get_env_vars_hash (plugin, dep);
1617 dep->stat_hash = gst_plugin_ext_dep_get_stat_hash (plugin, dep);
1619 plugin->priv->deps = g_list_append (plugin->priv->deps, dep);
1621 GST_DEBUG_OBJECT (plugin, "added dependency:");
1622 for (; env_vars != NULL && *env_vars != NULL; ++env_vars)
1623 GST_DEBUG_OBJECT (plugin, " evar: %s", *env_vars);
1624 for (; paths != NULL && *paths != NULL; ++paths)
1625 GST_DEBUG_OBJECT (plugin, " path: %s", *paths);
1626 for (; names != NULL && *names != NULL; ++names)
1627 GST_DEBUG_OBJECT (plugin, " name: %s", *names);
1631 * gst_plugin_add_dependency_simple:
1632 * @plugin: the #GstPlugin
1633 * @env_vars: one or more environent variables (separated by ':', ';' or ','),
1634 * or NULL. Environment variable names may be followed by a path component
1635 * which will be added to the content of the environment variable, e.g.
1636 * "HOME/.mystuff/plugins:MYSTUFF_PLUGINS_PATH"
1637 * @paths: one ore more directory paths (separated by ':' or ';' or ','),
1638 * or NULL. Example: "/usr/lib/mystuff/plugins"
1639 * @names: one or more file names or file name suffixes (separated by commas),
1641 * @flags: optional flags, or #GST_PLUGIN_DEPENDENCY_FLAG_NONE
1643 * Make GStreamer aware of external dependencies which affect the feature
1644 * set of this plugin (ie. the elements or typefinders associated with it).
1646 * GStreamer will re-inspect plugins with external dependencies whenever any
1647 * of the external dependencies change. This is useful for plugins which wrap
1648 * other plugin systems, e.g. a plugin which wraps a plugin-based visualisation
1649 * library and makes visualisations available as GStreamer elements, or a
1650 * codec loader which exposes elements and/or caps dependent on what external
1651 * codec libraries are currently installed.
1653 * Convenience wrapper function for gst_plugin_add_dependency() which
1654 * takes simple strings as arguments instead of string arrays, with multiple
1655 * arguments separated by predefined delimiters (see above).
1660 gst_plugin_add_dependency_simple (GstPlugin * plugin,
1661 const gchar * env_vars, const gchar * paths, const gchar * names,
1662 GstPluginDependencyFlags flags)
1664 gchar **a_evars = NULL;
1665 gchar **a_paths = NULL;
1666 gchar **a_names = NULL;
1669 a_evars = g_strsplit_set (env_vars, ":;,", -1);
1671 a_paths = g_strsplit_set (paths, ":;,", -1);
1673 a_names = g_strsplit_set (names, ",", -1);
1675 gst_plugin_add_dependency (plugin, (const gchar **) a_evars,
1676 (const gchar **) a_paths, (const gchar **) a_names, flags);
1679 g_strfreev (a_evars);
1681 g_strfreev (a_paths);
1683 g_strfreev (a_names);