2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
5 * gst.c: Initialization and non-pipeline operations
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: Media library supporting arbitrary formats and filter
27 * @see_also: Check out both <ulink url="http://www.cse.ogi.edu/sysl/">OGI's
28 * pipeline</ulink> and Microsoft's DirectShow for some background.
30 * GStreamer is a framework for constructing graphs of various filters
31 * (termed elements here) that will handle streaming media. Any discreet
32 * (packetizable) media type is supported, with provisions for automatically
33 * determining source type. Formatting/framing information is provided with
34 * a powerful negotiation framework. Plugins are heavily used to provide for
35 * all elements, allowing one to construct plugins outside of the GST
36 * library, even released binary-only if license require (please don't).
38 * GStreamer borrows heavily from both the <ulink
39 * url="http://www.cse.ogi.edu/sysl/">OGI media pipeline</ulink> and
40 * Microsoft's DirectShow, hopefully taking the best of both and leaving the
41 * cruft behind. Its interface is still very fluid and thus can be changed
42 * to increase the sanity/noise ratio.
44 * The <application>GStreamer</application> library should be initialized with
45 * gst_init() before it can be used. You should pass pointers to the main argc
46 * and argv variables so that GStreamer can process its own command line
47 * options, as shown in the following example.
50 * <title>Initializing the gstreamer library</title>
51 * <programlisting language="c">
53 * main (int argc, char *argv[])
55 * // initialize the GStreamer library
56 * gst_init (&argc, &argv);
62 * It's allowed to pass two NULL pointers to gst_init() in case you don't want
63 * to pass the command line args to GStreamer.
65 * You can also use GOption to initialize your own parameters as shown in
66 * the next code fragment:
68 * <title>Initializing own parameters when initializing gstreamer</title>
70 * static gboolean stats = FALSE;
73 * main (int argc, char *argv[])
75 * GOptionEntry options[] = {
76 * {"tags", 't', 0, G_OPTION_ARG_NONE, &tags,
77 * N_("Output tags (also known as metadata)"), NULL},
80 * ctx = g_option_context_new ("gst-launch");
81 * g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
82 * g_option_context_add_group (ctx, gst_init_get_option_group ());
83 * if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
84 * g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
87 * g_option_context_free (ctx);
93 * Use gst_version() to query the library version at runtime or use the
94 * GST_VERSION_* macros to find the version at compile time. Optionally
95 * gst_version_string() returns a printable string.
97 * The gst_deinit() call is used to clean up all internal resources used
98 * by <application>GStreamer</application>. It is mostly used in unit tests
101 * Last reviewed on 2005-11-23 (0.9.5)
104 #include "gst_private.h"
107 #include <sys/types.h>
109 #include <sys/wait.h>
113 #include "gst-i18n-lib.h"
114 #include <locale.h> /* for LC_ALL */
118 #define GST_CAT_DEFAULT GST_CAT_GST_INIT
120 #define MAX_PATH_SPLIT 16
121 #define GST_PLUGIN_SEPARATOR ","
123 static gboolean gst_initialized = FALSE;
125 #ifndef GST_DISABLE_REGISTRY
126 static GList *plugin_paths = NULL; /* for delayed processing in post_init */
129 extern gint _gst_trace_on;
131 /* set to TRUE when segfaults need to be left as is */
132 gboolean _gst_disable_segtrap = FALSE;
135 static void load_plugin_func (gpointer data, gpointer user_data);
136 static gboolean init_pre (void);
137 static gboolean init_post (void);
138 static gboolean parse_goption_arg (const gchar * s_opt,
139 const gchar * arg, gpointer data, GError ** err);
141 static GSList *preload_plugins = NULL;
143 const gchar g_log_domain_gstreamer[] = "GStreamer";
146 debug_log_handler (const gchar * log_domain,
147 GLogLevelFlags log_level, const gchar * message, gpointer user_data)
149 g_log_default_handler (log_domain, log_level, message, user_data);
150 /* FIXME: do we still need this ? fatal errors these days are all
151 * other than core errors */
152 /* g_on_error_query (NULL); */
159 #ifndef GST_DISABLE_GST_DEBUG
172 /* debug-spec ::= category-spec [, category-spec]*
173 * category-spec ::= category:val | val
182 #ifndef GST_DISABLE_GST_DEBUG
184 parse_debug_category (gchar * str, const gchar ** category)
201 parse_debug_level (gchar * str, gint * level)
209 if (str[0] != NUL && str[1] == NUL
210 && str[0] >= '0' && str[0] < '0' + GST_LEVEL_COUNT) {
211 *level = str[0] - '0';
219 parse_debug_list (const gchar * list)
224 g_return_if_fail (list != NULL);
226 split = g_strsplit (list, ",", 0);
228 for (walk = split; *walk; walk++) {
229 if (strchr (*walk, ':')) {
230 gchar **values = g_strsplit (*walk, ":", 2);
232 if (values[0] && values[1]) {
234 const gchar *category;
236 if (parse_debug_category (values[0], &category)
237 && parse_debug_level (values[1], &level))
238 gst_debug_set_threshold_for_name (category, level);
245 if (parse_debug_level (*walk, &level))
246 gst_debug_set_default_threshold (level);
255 * gst_init_get_option_group:
257 * Returns a #GOptionGroup with GStreamer's argument specifications. The
258 * group is set up to use standard GOption callbacks, so when using this
259 * group in combination with GOption parsing methods, all argument parsing
260 * and initialization is automated.
262 * This function is useful if you want to integrate GStreamer with other
263 * libraries that use GOption (see g_option_context_add_group() ).
265 * Returns: a pointer to GStreamer's option group. Should be dereferenced
270 gst_init_get_option_group (void)
273 static GOptionEntry gst_args[] = {
274 {"gst-version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
275 parse_goption_arg, N_("Print the GStreamer version"), NULL},
276 {"gst-fatal-warnings", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
277 parse_goption_arg, N_("Make all warnings fatal"), NULL},
278 #ifndef GST_DISABLE_GST_DEBUG
279 {"gst-debug-help", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
280 parse_goption_arg, N_("Print available debug categories and exit"),
282 {"gst-debug-level", 0, 0, G_OPTION_ARG_CALLBACK, parse_goption_arg,
283 N_("Default debug level from 1 (only error) to 5 (anything) or "
286 {"gst-debug", 0, 0, G_OPTION_ARG_CALLBACK, parse_goption_arg,
287 N_("Comma-separated list of category_name:level pairs to set "
288 "specific levels for the individual categories. Example: "
289 "GST_AUTOPLUG:5,GST_ELEMENT_*:3"),
291 {"gst-debug-no-color", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
292 parse_goption_arg, N_("Disable colored debugging output"), NULL},
293 {"gst-debug-disable", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
294 parse_goption_arg, N_("Disable debugging"), NULL},
296 {"gst-plugin-spew", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
297 parse_goption_arg, N_("Enable verbose plugin loading diagnostics"),
299 {"gst-plugin-path", 0, 0, G_OPTION_ARG_CALLBACK, parse_goption_arg,
300 N_("Colon-separated paths containing plugins"), N_("PATHS")},
301 {"gst-plugin-load", 0, 0, G_OPTION_ARG_CALLBACK, parse_goption_arg,
302 N_("Comma-separated list of plugins to preload in addition to the "
303 "list stored in environment variable GST_PLUGIN_PATH"),
305 {"gst-disable-segtrap", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
307 N_("Disable trapping of segmentation faults during plugin loading"),
312 group = g_option_group_new ("gst", _("GStreamer Options"),
313 _("Show GStreamer Options"), NULL, NULL);
314 g_option_group_set_parse_hooks (group, (GOptionParseFunc) init_pre,
315 (GOptionParseFunc) init_post);
317 g_option_group_add_entries (group, gst_args);
318 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
325 * @argc: pointer to application's argc
326 * @argv: pointer to application's argv
327 * @err: pointer to a #GError to which a message will be posted on error
329 * Initializes the GStreamer library, setting up internal path lists,
330 * registering built-in elements, and loading standard plugins.
332 * This function will return %FALSE if GStreamer could not be initialized
333 * for some reason. If you want your program to fail fatally,
334 * use gst_init() instead.
336 * Returns: %TRUE if GStreamer could be initialized.
339 gst_init_check (int *argc, char **argv[], GError ** err)
345 if (gst_initialized) {
346 GST_DEBUG ("already initialized gst");
350 ctx = g_option_context_new ("- GStreamer initialization");
351 g_option_context_set_ignore_unknown_options (ctx, TRUE);
352 group = gst_init_get_option_group ();
353 g_option_context_add_group (ctx, group);
354 res = g_option_context_parse (ctx, argc, argv, err);
355 g_option_context_free (ctx);
358 gst_initialized = TRUE;
366 * @argc: pointer to application's argc
367 * @argv: pointer to application's argv
369 * Initializes the GStreamer library, setting up internal path lists,
370 * registering built-in elements, and loading standard plugins.
373 * This function will terminate your program if it was unable to initialize
374 * GStreamer for some reason. If you want your program to fall back,
375 * use gst_init_check() instead.
378 * WARNING: This function does not work in the same way as corresponding
379 * functions in other glib-style libraries, such as gtk_init(). In
380 * particular, unknown command line options cause this function to
381 * abort program execution.
384 gst_init (int *argc, char **argv[])
388 if (!gst_init_check (argc, argv, &err)) {
389 g_print ("Could not initialized GStreamer: %s\n",
390 err ? err->message : "unknown error occurred");
398 #ifndef GST_DISABLE_REGISTRY
400 add_path_func (gpointer data, gpointer user_data)
402 GST_INFO ("Adding plugin path: \"%s\", will scan later", (gchar *) data);
403 plugin_paths = g_list_append (plugin_paths, g_strdup (data));
408 prepare_for_load_plugin_func (gpointer data, gpointer user_data)
410 preload_plugins = g_slist_prepend (preload_plugins, data);
414 load_plugin_func (gpointer data, gpointer user_data)
417 const gchar *filename;
420 filename = (const gchar *) data;
422 plugin = gst_plugin_load_file (filename, &err);
425 GST_INFO ("Loaded plugin: \"%s\"", filename);
427 gst_default_registry_add_plugin (plugin);
430 /* Report error to user, and free error */
431 GST_ERROR ("Failed to load plugin: %s\n", err->message);
434 GST_WARNING ("Failed to load plugin: \"%s\"", filename);
442 split_and_iterate (const gchar * stringlist, gchar * separator, GFunc iterator,
447 gchar *lastlist = g_strdup (stringlist);
450 strings = g_strsplit (lastlist, separator, MAX_PATH_SPLIT);
455 iterator (strings[j], user_data);
456 if (++j == MAX_PATH_SPLIT) {
457 lastlist = g_strdup (strings[j]);
458 g_strfreev (strings);
463 g_strfreev (strings);
467 /* we have no fail cases yet, but maybe in the future */
471 /* GStreamer was built against a GLib >= 2.8 and is therefore not doing
472 * the refcount hack. Check that it isn't being run against an older GLib */
473 if (glib_major_version < 2 ||
474 (glib_major_version == 2 && glib_minor_version < 8)) {
475 g_warning ("GStreamer was compiled against GLib %d.%d.%d but is running"
476 " against %d.%d.%d. This will cause reference counting issues",
477 GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION, GLIB_MICRO_VERSION,
478 glib_major_version, glib_minor_version, glib_micro_version);
483 if (g_thread_supported ()) {
484 /* somebody already initialized threading */
486 g_thread_init (NULL);
488 /* we need threading to be enabled right here */
492 setlocale (LC_ALL, "");
493 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
494 #endif /* ENABLE_NLS */
496 #ifndef GST_DISABLE_GST_DEBUG
498 const gchar *debug_list;
500 if (g_getenv ("GST_DEBUG_NO_COLOR") != NULL)
501 gst_debug_set_colored (FALSE);
503 debug_list = g_getenv ("GST_DEBUG");
505 parse_debug_list (debug_list);
509 /* This is the earliest we can make stuff show up in the logs.
510 * So give some useful info about GStreamer here */
511 GST_INFO ("Initializing GStreamer Core Library version %s", VERSION);
512 GST_INFO ("Using library installed in %s", LIBDIR);
518 gst_register_core_elements (GstPlugin * plugin)
520 /* register some standard builtin types */
521 if (!gst_element_register (plugin, "bin", GST_RANK_PRIMARY,
523 !gst_element_register (plugin, "pipeline", GST_RANK_PRIMARY,
526 g_assert_not_reached ();
531 static GstPluginDesc plugin_desc = {
535 "core elements linked into the GStreamer library",
536 gst_register_core_elements,
546 #ifndef GST_DISABLE_REGISTRY
549 scan_and_update_registry (GstRegistry * default_registry,
550 const gchar * registry_file, gboolean write_changes)
552 const gchar *plugin_path;
553 gboolean changed = FALSE;
556 GST_DEBUG ("reading registry cache: %s", registry_file);
557 gst_registry_xml_read_cache (default_registry, registry_file);
559 /* scan paths specified via --gst-plugin-path */
560 GST_DEBUG ("scanning paths added via --gst-plugin-path");
561 for (l = plugin_paths; l != NULL; l = l->next) {
562 GST_INFO ("Scanning plugin path: \"%s\"", (gchar *) l->data);
563 /* CHECKME: add changed |= here as well? */
564 gst_registry_scan_path (default_registry, (gchar *) l->data);
567 g_list_free (plugin_paths);
570 /* GST_PLUGIN_PATH specifies a list of directories to scan for
571 * additional plugins. These take precedence over the system plugins */
572 plugin_path = g_getenv ("GST_PLUGIN_PATH");
577 GST_DEBUG ("GST_PLUGIN_PATH set to %s", plugin_path);
578 list = g_strsplit (plugin_path, G_SEARCHPATH_SEPARATOR_S, 0);
579 for (i = 0; list[i]; i++) {
580 changed |= gst_registry_scan_path (default_registry, list[i]);
584 GST_DEBUG ("GST_PLUGIN_PATH not set");
587 /* GST_PLUGIN_SYSTEM_PATH specifies a list of plugins that are always
588 * loaded by default. If not set, this defaults to the system-installed
589 * path, and the plugins installed in the user's home directory */
590 plugin_path = g_getenv ("GST_PLUGIN_SYSTEM_PATH");
591 if (plugin_path == NULL) {
594 GST_DEBUG ("GST_PLUGIN_SYSTEM_PATH not set");
596 /* plugins in the user's home directory take precedence over
597 * system-installed ones */
598 home_plugins = g_build_filename (g_get_home_dir (),
599 ".gstreamer-" GST_MAJORMINOR, "plugins", NULL);
600 changed |= gst_registry_scan_path (default_registry, home_plugins);
601 g_free (home_plugins);
603 /* add the main (installed) library path */
604 changed |= gst_registry_scan_path (default_registry, PLUGINDIR);
609 GST_DEBUG ("GST_PLUGIN_SYSTEM_PATH set to %s", plugin_path);
610 list = g_strsplit (plugin_path, G_SEARCHPATH_SEPARATOR_S, 0);
611 for (i = 0; list[i]; i++) {
612 changed |= gst_registry_scan_path (default_registry, list[i]);
618 GST_DEBUG ("registry cache has not changed");
622 if (!write_changes) {
623 GST_DEBUG ("not trying to write registry cache changes to file");
627 GST_DEBUG ("writing registry cache");
628 if (!gst_registry_xml_write_cache (default_registry, registry_file)) {
629 g_warning ("Problem writing registry cache to %s: %s", registry_file,
634 GST_DEBUG ("registry cache written successfully");
638 #endif /* GST_DISABLE_REGISTRY */
642 * - initalization of threads if we use them
645 * - initializes gst_format
646 * - registers a bunch of types for gst_objects
648 * - we don't have cases yet where this fails, but in the future
649 * we might and then it's nice to be able to return that
656 #ifndef GST_DISABLE_TRACE
658 #endif /* GST_DISABLE_TRACE */
660 llf = G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL;
661 g_log_set_handler (g_log_domain_gstreamer, llf, debug_log_handler, NULL);
663 _gst_format_initialize ();
664 _gst_query_initialize ();
665 gst_object_get_type ();
667 gst_element_factory_get_type ();
668 gst_element_get_type ();
669 gst_type_find_factory_get_type ();
672 #ifndef GST_DISABLE_INDEX
673 gst_index_factory_get_type ();
674 #endif /* GST_DISABLE_INDEX */
675 #ifndef GST_DISABLE_URI
676 gst_uri_handler_get_type ();
677 #endif /* GST_DISABLE_URI */
679 gst_structure_get_type ();
680 _gst_value_initialize ();
681 gst_caps_get_type ();
682 _gst_event_initialize ();
683 _gst_buffer_initialize ();
684 _gst_message_initialize ();
685 _gst_tag_initialize ();
687 /* register core plugins */
688 _gst_plugin_register_static (&plugin_desc);
690 _gst_plugin_initialize ();
692 #ifndef GST_DISABLE_REGISTRY
695 GstRegistry *default_registry;
701 default_registry = gst_registry_get_default ();
702 registry_file = g_strdup (g_getenv ("GST_REGISTRY"));
703 if (registry_file == NULL) {
704 registry_file = g_build_filename (g_get_home_dir (),
705 ".gstreamer-" GST_MAJORMINOR, "registry." HOST_CPU ".xml", NULL);
708 /* We fork here, and let the child read and possibly rebuild the registry.
709 * After that, the parent will re-read the freshly generated registry. */
711 GST_DEBUG ("forking");
714 GST_ERROR ("Failed to fork()");
715 g_free (registry_file);
722 /* this is the child */
723 GST_DEBUG ("child reading registry cache");
724 res = scan_and_update_registry (default_registry, registry_file, TRUE);
725 _gst_registry_remove_cache_plugins (default_registry);
726 g_free (registry_file);
728 /* need to use _exit, so that any exit handlers registered don't
729 * bring down the main program */
730 GST_DEBUG ("child exiting: %s", (res) ? "SUCCESS" : "FAILURE");
731 _exit ((res) ? EXIT_SUCCESS : EXIT_FAILURE);
737 GST_DEBUG ("parent waiting on child");
738 ret = waitpid (pid, &status, 0);
739 GST_DEBUG ("parent done waiting on child");
741 GST_ERROR ("error during waitpid: %s", g_strerror (errno));
745 if (!WIFEXITED (status)) {
746 GST_ERROR ("child did not exit normally, status: %d", status);
750 GST_DEBUG ("child exited normally with return value %d",
751 WEXITSTATUS (status));
753 if (WEXITSTATUS (status) == EXIT_SUCCESS) {
754 GST_DEBUG ("parent reading registry cache");
755 gst_registry_xml_read_cache (default_registry, registry_file);
757 GST_DEBUG ("parent re-scanning registry");
758 scan_and_update_registry (default_registry, registry_file, FALSE);
762 #else /* HAVE_FORK */
764 /* fork() not available */
765 GST_DEBUG ("updating registry cache");
766 scan_and_update_registry (default_registry, registry_file, TRUE);
768 #endif /* HAVE_FORK */
770 g_free (registry_file);
773 #endif /* GST_DISABLE_REGISTRY */
775 /* if we need to preload plugins */
776 if (preload_plugins) {
777 g_slist_foreach (preload_plugins, load_plugin_func, NULL);
778 g_slist_free (preload_plugins);
779 preload_plugins = NULL;
781 #ifndef GST_DISABLE_TRACE
784 gst_trace = gst_trace_new ("gst.trace", 1024);
785 gst_trace_set_default (gst_trace);
787 #endif /* GST_DISABLE_TRACE */
792 #ifndef GST_DISABLE_GST_DEBUG
794 select_all (GstPlugin * plugin, gpointer user_data)
800 sort_by_category_name (gconstpointer a, gconstpointer b)
802 return strcmp (gst_debug_category_get_name ((GstDebugCategory *) a),
803 gst_debug_category_get_name ((GstDebugCategory *) b));
806 gst_debug_help (void)
814 list2 = gst_registry_plugin_filter (gst_registry_get_default (),
815 select_all, FALSE, NULL);
817 /* FIXME this is gross. why don't debug have categories PluginFeatures? */
818 for (g = list2; g; g = g_list_next (g)) {
819 GstPlugin *plugin = GST_PLUGIN_CAST (g->data);
821 gst_plugin_load (plugin);
825 list = gst_debug_get_all_categories ();
826 walk = list = g_slist_sort (list, sort_by_category_name);
829 g_print ("name level description\n");
830 g_print ("---------------------+--------+--------------------------------\n");
833 GstDebugCategory *cat = (GstDebugCategory *) walk->data;
835 if (gst_debug_is_colored ()) {
836 gchar *color = gst_debug_construct_term_color (cat->color);
838 g_print ("%s%-20s\033[00m %1d %s %s%s\033[00m\n",
840 gst_debug_category_get_name (cat),
841 gst_debug_category_get_threshold (cat),
842 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
843 color, gst_debug_category_get_description (cat));
846 g_print ("%-20s %1d %s %s\n", gst_debug_category_get_name (cat),
847 gst_debug_category_get_threshold (cat),
848 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
849 gst_debug_category_get_description (cat));
851 walk = g_slist_next (walk);
859 parse_one_option (gint opt, const gchar * arg, GError ** err)
863 g_print ("GStreamer Core Library version %s\n", PACKAGE_VERSION);
865 case ARG_FATAL_WARNINGS:{
866 GLogLevelFlags fatal_mask;
868 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
869 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
870 g_log_set_always_fatal (fatal_mask);
873 #ifndef GST_DISABLE_GST_DEBUG
874 case ARG_DEBUG_LEVEL:{
877 tmp = strtol (arg, NULL, 0);
878 if (tmp >= 0 && tmp < GST_LEVEL_COUNT) {
879 gst_debug_set_default_threshold (tmp);
884 parse_debug_list (arg);
886 case ARG_DEBUG_NO_COLOR:
887 gst_debug_set_colored (FALSE);
889 case ARG_DEBUG_DISABLE:
890 gst_debug_set_active (FALSE);
896 case ARG_PLUGIN_SPEW:
898 case ARG_PLUGIN_PATH:
899 #ifndef GST_DISABLE_REGISTRY
900 split_and_iterate (arg, G_SEARCHPATH_SEPARATOR_S, add_path_func, NULL);
901 #endif /* GST_DISABLE_REGISTRY */
903 case ARG_PLUGIN_LOAD:
904 split_and_iterate (arg, ",", prepare_for_load_plugin_func, NULL);
906 case ARG_SEGTRAP_DISABLE:
907 _gst_disable_segtrap = TRUE;
910 g_set_error (err, G_OPTION_ERROR, G_OPTION_ERROR_UNKNOWN_OPTION,
911 _("Unknown option"));
919 parse_goption_arg (const gchar * opt,
920 const gchar * arg, gpointer data, GError ** err)
928 "--gst-version", ARG_VERSION}, {
929 "--gst-fatal-warnings", ARG_FATAL_WARNINGS},
930 #ifndef GST_DISABLE_GST_DEBUG
932 "--gst-debug-level", ARG_DEBUG_LEVEL}, {
933 "--gst-debug", ARG_DEBUG}, {
934 "--gst-debug-disable", ARG_DEBUG_DISABLE}, {
935 "--gst-debug-no-color", ARG_DEBUG_NO_COLOR}, {
936 "--gst-debug-help", ARG_DEBUG_HELP},
939 "--gst-plugin-spew", ARG_PLUGIN_SPEW}, {
940 "--gst-plugin-path", ARG_PLUGIN_PATH}, {
941 "--gst-plugin-load", ARG_PLUGIN_LOAD}, {
942 "--gst-disable-segtrap", ARG_SEGTRAP_DISABLE}, {
947 for (n = 0; options[n].opt; n++) {
948 if (!strcmp (opt, options[n].opt)) {
949 val = options[n].val;
954 return parse_one_option (val, arg, err);
961 * Call only once, before exiting.
962 * After this call GStreamer should not be used anymore.
965 extern GstRegistry *_gst_registry_default;
971 GST_INFO ("deinitializing GStreamer");
972 clock = gst_system_clock_obtain ();
973 gst_object_unref (clock);
974 gst_object_unref (clock);
976 _gst_registry_cleanup ();
978 gst_initialized = FALSE;
979 GST_INFO ("deinitialized GStreamer");
984 * @major: pointer to a guint to store the major version number
985 * @minor: pointer to a guint to store the minor version number
986 * @micro: pointer to a guint to store the micro version number
987 * @nano: pointer to a guint to store the nano version number
989 * Gets the version number of the GStreamer library.
992 gst_version (guint * major, guint * minor, guint * micro, guint * nano)
994 g_return_if_fail (major);
995 g_return_if_fail (minor);
996 g_return_if_fail (micro);
997 g_return_if_fail (nano);
999 *major = GST_VERSION_MAJOR;
1000 *minor = GST_VERSION_MINOR;
1001 *micro = GST_VERSION_MICRO;
1002 *nano = GST_VERSION_NANO;
1006 * gst_version_string:
1008 * This function returns a string that is useful for describing this version
1009 * of GStreamer to the outside world: user agent strings, logging, ...
1011 * Returns: a newly allocated string describing this version of GStreamer.
1015 gst_version_string ()
1017 guint major, minor, micro, nano;
1019 gst_version (&major, &minor, µ, &nano);
1021 return g_strdup_printf ("GStreamer %d.%d.%d", major, minor, micro);
1023 return g_strdup_printf ("GStreamer %d.%d.%d (CVS)", major, minor, micro);
1025 return g_strdup_printf ("GStreamer %d.%d.%d (prerelease)", major, minor,