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., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
25 * @short_description: Media library supporting arbitrary formats and filter
28 * GStreamer is a framework for constructing graphs of various filters
29 * (termed elements here) that will handle streaming media. Any discreet
30 * (packetizable) media type is supported, with provisions for automatically
31 * determining source type. Formatting/framing information is provided with
32 * a powerful negotiation framework. Plugins are heavily used to provide for
33 * all elements, allowing one to construct plugins outside of the GST
34 * library, even released binary-only if license require (please don't).
35 * GStreamer covers a wide range of use cases including: playback, recording,
36 * editing, serving streams, voice over ip and video calls.
38 * The <application>GStreamer</application> library should be initialized with
39 * gst_init() before it can be used. You should pass pointers to the main argc
40 * and argv variables so that GStreamer can process its own command line
41 * options, as shown in the following example.
44 * <title>Initializing the gstreamer library</title>
45 * <programlisting language="c">
47 * main (int argc, char *argv[])
49 * // initialize the GStreamer library
50 * gst_init (&argc, &argv);
56 * It's allowed to pass two NULL pointers to gst_init() in case you don't want
57 * to pass the command line args to GStreamer.
59 * You can also use GOption to initialize your own parameters as shown in
60 * the next code fragment:
62 * <title>Initializing own parameters when initializing gstreamer</title>
64 * static gboolean stats = FALSE;
67 * main (int argc, char *argv[])
69 * GOptionEntry options[] = {
70 * {"tags", 't', 0, G_OPTION_ARG_NONE, &tags,
71 * N_("Output tags (also known as metadata)"), NULL},
74 * ctx = g_option_context_new ("[ADDITIONAL ARGUMENTS]");
75 * g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
76 * g_option_context_add_group (ctx, gst_init_get_option_group ());
77 * if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
78 * g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
81 * g_option_context_free (ctx);
87 * Use gst_version() to query the library version at runtime or use the
88 * GST_VERSION_* macros to find the version at compile time. Optionally
89 * gst_version_string() returns a printable string.
91 * The gst_deinit() call is used to clean up all internal resources used
92 * by <application>GStreamer</application>. It is mostly used in unit tests
95 * Last reviewed on 2006-08-11 (0.10.10)
98 #include "gst_private.h"
99 #include "gstconfig.h"
102 #include <sys/types.h>
103 #ifdef HAVE_SYS_UTSNAME_H
104 #include <sys/utsname.h>
110 #define WIN32_LEAN_AND_MEAN /* prevents from including too many things */
111 #include <windows.h> /* GetStdHandle, windows console */
114 #include "gst-i18n-lib.h"
115 #include <locale.h> /* for LC_ALL */
118 #include "gsttrace.h"
120 #define GST_CAT_DEFAULT GST_CAT_GST_INIT
122 #define MAX_PATH_SPLIT 16
123 #define GST_PLUGIN_SEPARATOR ","
125 static gboolean gst_initialized = FALSE;
126 static gboolean gst_deinitialized = FALSE;
129 HMODULE _priv_gst_dll_handle = NULL;
132 #ifndef GST_DISABLE_REGISTRY
133 GList *_priv_gst_plugin_paths = NULL; /* for delayed processing in post_init */
135 extern gboolean _priv_gst_disable_registry_update;
138 #ifndef GST_DISABLE_GST_DEBUG
139 const gchar *priv_gst_dump_dot_dir;
144 /* set to TRUE when segfaults need to be left as is */
145 static gboolean _gst_disable_segtrap = FALSE;
147 static gboolean init_pre (GOptionContext * context, GOptionGroup * group,
148 gpointer data, GError ** error);
149 static gboolean init_post (GOptionContext * context, GOptionGroup * group,
150 gpointer data, GError ** error);
151 #ifndef GST_DISABLE_OPTION_PARSING
152 static gboolean parse_goption_arg (const gchar * s_opt,
153 const gchar * arg, gpointer data, GError ** err);
156 GSList *_priv_gst_preload_plugins = NULL;
158 const gchar g_log_domain_gstreamer[] = "GStreamer";
161 debug_log_handler (const gchar * log_domain,
162 GLogLevelFlags log_level, const gchar * message, gpointer user_data)
164 g_log_default_handler (log_domain, log_level, message, user_data);
165 /* FIXME: do we still need this ? fatal errors these days are all
166 * other than core errors */
167 /* g_on_error_query (NULL); */
174 #ifndef GST_DISABLE_GST_DEBUG
185 ARG_REGISTRY_UPDATE_DISABLE,
186 ARG_REGISTRY_FORK_DISABLE
189 /* debug-spec ::= category-spec [, category-spec]*
190 * category-spec ::= category:val | val
196 BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved);
198 DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
200 if (fdwReason == DLL_PROCESS_ATTACH)
201 _priv_gst_dll_handle = (HMODULE) hinstDLL;
208 * gst_init_get_option_group: (skip)
210 * Returns a #GOptionGroup with GStreamer's argument specifications. The
211 * group is set up to use standard GOption callbacks, so when using this
212 * group in combination with GOption parsing methods, all argument parsing
213 * and initialization is automated.
215 * This function is useful if you want to integrate GStreamer with other
216 * libraries that use GOption (see g_option_context_add_group() ).
218 * If you use this function, you should make sure you initialise the GLib
219 * threading system as one of the very first things in your program
220 * (see the example at the beginning of this section).
222 * Returns: (transfer full): a pointer to GStreamer's option group.
226 gst_init_get_option_group (void)
228 #ifndef GST_DISABLE_OPTION_PARSING
230 static const GOptionEntry gst_args[] = {
231 {"gst-version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
232 (gpointer) parse_goption_arg, N_("Print the GStreamer version"), NULL},
233 {"gst-fatal-warnings", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
234 (gpointer) parse_goption_arg, N_("Make all warnings fatal"), NULL},
235 #ifndef GST_DISABLE_GST_DEBUG
236 {"gst-debug-help", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
237 (gpointer) parse_goption_arg,
238 N_("Print available debug categories and exit"),
240 {"gst-debug-level", 0, 0, G_OPTION_ARG_CALLBACK,
241 (gpointer) parse_goption_arg,
242 N_("Default debug level from 1 (only error) to 5 (anything) or "
245 {"gst-debug", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg,
246 N_("Comma-separated list of category_name:level pairs to set "
247 "specific levels for the individual categories. Example: "
248 "GST_AUTOPLUG:5,GST_ELEMENT_*:3"),
250 {"gst-debug-no-color", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
251 (gpointer) parse_goption_arg, N_("Disable colored debugging output"),
253 {"gst-debug-disable", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
254 (gpointer) parse_goption_arg, N_("Disable debugging"), NULL},
256 {"gst-plugin-spew", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
257 (gpointer) parse_goption_arg,
258 N_("Enable verbose plugin loading diagnostics"),
260 {"gst-plugin-path", 0, 0, G_OPTION_ARG_CALLBACK,
261 (gpointer) parse_goption_arg,
262 N_("Colon-separated paths containing plugins"), N_("PATHS")},
263 {"gst-plugin-load", 0, 0, G_OPTION_ARG_CALLBACK,
264 (gpointer) parse_goption_arg,
265 N_("Comma-separated list of plugins to preload in addition to the "
266 "list stored in environment variable GST_PLUGIN_PATH"),
268 {"gst-disable-segtrap", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
269 (gpointer) parse_goption_arg,
270 N_("Disable trapping of segmentation faults during plugin loading"),
272 {"gst-disable-registry-update", 0, G_OPTION_FLAG_NO_ARG,
273 G_OPTION_ARG_CALLBACK,
274 (gpointer) parse_goption_arg,
275 N_("Disable updating the registry"),
277 {"gst-disable-registry-fork", 0, G_OPTION_FLAG_NO_ARG,
278 G_OPTION_ARG_CALLBACK,
279 (gpointer) parse_goption_arg,
280 N_("Disable spawning a helper process while scanning the registry"),
285 group = g_option_group_new ("gst", _("GStreamer Options"),
286 _("Show GStreamer Options"), NULL, NULL);
287 g_option_group_set_parse_hooks (group, (GOptionParseFunc) init_pre,
288 (GOptionParseFunc) init_post);
290 g_option_group_add_entries (group, gst_args);
291 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
301 * @argc: (inout) (allow-none): pointer to application's argc
302 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
303 * @err: pointer to a #GError to which a message will be posted on error
305 * Initializes the GStreamer library, setting up internal path lists,
306 * registering built-in elements, and loading standard plugins.
308 * This function will return %FALSE if GStreamer could not be initialized
309 * for some reason. If you want your program to fail fatally,
310 * use gst_init() instead.
312 * Returns: %TRUE if GStreamer could be initialized.
315 gst_init_check (int *argc, char **argv[], GError ** err)
317 #ifndef GST_DISABLE_OPTION_PARSING
323 if (gst_initialized) {
324 GST_DEBUG ("already initialized gst");
327 #ifndef GST_DISABLE_OPTION_PARSING
328 ctx = g_option_context_new ("- GStreamer initialization");
329 g_option_context_set_ignore_unknown_options (ctx, TRUE);
330 group = gst_init_get_option_group ();
331 g_option_context_add_group (ctx, group);
332 res = g_option_context_parse (ctx, argc, argv, err);
333 g_option_context_free (ctx);
335 init_pre (NULL, NULL, NULL, NULL);
336 init_post (NULL, NULL, NULL, NULL);
340 gst_initialized = res;
343 GST_INFO ("initialized GStreamer successfully");
345 GST_INFO ("failed to initialize GStreamer");
353 * @argc: (inout) (allow-none): pointer to application's argc
354 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
356 * Initializes the GStreamer library, setting up internal path lists,
357 * registering built-in elements, and loading standard plugins.
359 * Unless the plugin registry is disabled at compile time, the registry will be
360 * loaded. By default this will also check if the registry cache needs to be
361 * updated and rescan all plugins if needed. See gst_update_registry() for
362 * details and section
363 * <link linkend="gst-running">Running GStreamer Applications</link>
364 * for how to disable automatic registry updates.
367 * This function will terminate your program if it was unable to initialize
368 * GStreamer for some reason. If you want your program to fall back,
369 * use gst_init_check() instead.
372 * WARNING: This function does not work in the same way as corresponding
373 * functions in other glib-style libraries, such as gtk_init(). In
374 * particular, unknown command line options cause this function to
375 * abort program execution.
378 gst_init (int *argc, char **argv[])
382 if (!gst_init_check (argc, argv, &err)) {
383 g_print ("Could not initialize GStreamer: %s\n",
384 err ? err->message : "unknown error occurred");
393 * gst_is_initialized:
395 * Use this function to check if GStreamer has been initialized with gst_init()
396 * or gst_init_check().
398 * Returns: TRUE if initialization has been done, FALSE otherwise.
401 gst_is_initialized (void)
403 return gst_initialized;
406 #ifndef GST_DISABLE_REGISTRY
408 add_path_func (gpointer data, gpointer user_data)
410 GST_INFO ("Adding plugin path: \"%s\", will scan later", (gchar *) data);
411 _priv_gst_plugin_paths =
412 g_list_append (_priv_gst_plugin_paths, g_strdup (data));
416 #ifndef GST_DISABLE_OPTION_PARSING
418 prepare_for_load_plugin_func (gpointer data, gpointer user_data)
420 _priv_gst_preload_plugins =
421 g_slist_prepend (_priv_gst_preload_plugins, g_strdup (data));
425 #ifndef GST_DISABLE_OPTION_PARSING
427 split_and_iterate (const gchar * stringlist, const gchar * separator,
428 GFunc iterator, gpointer user_data)
432 gchar *lastlist = g_strdup (stringlist);
435 strings = g_strsplit (lastlist, separator, MAX_PATH_SPLIT);
440 iterator (strings[j], user_data);
441 if (++j == MAX_PATH_SPLIT) {
442 lastlist = g_strdup (strings[j]);
447 g_strfreev (strings);
452 /* we have no fail cases yet, but maybe in the future */
454 init_pre (GOptionContext * context, GOptionGroup * group, gpointer data,
457 if (gst_initialized) {
458 GST_DEBUG ("already initialized");
461 #if !GLIB_CHECK_VERSION(2, 35, 0)
465 #ifndef GST_DISABLE_GST_DEBUG
466 _priv_gst_debug_init ();
470 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
471 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
472 #endif /* ENABLE_NLS */
474 #ifndef GST_DISABLE_GST_DEBUG
476 const gchar *debug_list;
478 if (g_getenv ("GST_DEBUG_NO_COLOR") != NULL)
479 gst_debug_set_colored (FALSE);
481 debug_list = g_getenv ("GST_DEBUG");
483 gst_debug_set_threshold_from_string (debug_list, FALSE);
487 priv_gst_dump_dot_dir = g_getenv ("GST_DEBUG_DUMP_DOT_DIR");
489 /* This is the earliest we can make stuff show up in the logs.
490 * So give some useful info about GStreamer here */
491 GST_INFO ("Initializing GStreamer Core Library version %s", VERSION);
492 GST_INFO ("Using library installed in %s", LIBDIR);
494 /* Print some basic system details if possible (OS/architecture) */
495 #ifdef HAVE_SYS_UTSNAME_H
497 struct utsname sys_details;
499 if (uname (&sys_details) == 0) {
500 GST_INFO ("%s %s %s %s %s", sys_details.sysname,
501 sys_details.nodename, sys_details.release, sys_details.version,
502 sys_details.machine);
507 #ifndef G_ATOMIC_LOCK_FREE
508 GST_CAT_WARNING (GST_CAT_PERFORMANCE, "GLib atomic operations are NOT "
509 "implemented using real hardware atomic operations!");
516 gst_register_core_elements (GstPlugin * plugin)
518 /* register some standard builtin types */
519 if (!gst_element_register (plugin, "bin", GST_RANK_PRIMARY,
521 !gst_element_register (plugin, "pipeline", GST_RANK_PRIMARY,
524 g_assert_not_reached ();
531 * - initalization of threads if we use them
534 * - initializes gst_format
535 * - registers a bunch of types for gst_objects
537 * - we don't have cases yet where this fails, but in the future
538 * we might and then it's nice to be able to return that
541 init_post (GOptionContext * context, GOptionGroup * group, gpointer data,
546 if (gst_initialized) {
547 GST_DEBUG ("already initialized");
551 llf = G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL;
552 g_log_set_handler (g_log_domain_gstreamer, llf, debug_log_handler, NULL);
554 #ifndef GST_DISABLE_TRACE
555 _priv_gst_alloc_trace_initialize ();
558 _priv_gst_mini_object_initialize ();
559 _priv_gst_quarks_initialize ();
560 _priv_gst_memory_initialize ();
561 _priv_gst_format_initialize ();
562 _priv_gst_query_initialize ();
563 _priv_gst_structure_initialize ();
564 _priv_gst_caps_initialize ();
565 _priv_gst_meta_initialize ();
567 g_type_class_ref (gst_object_get_type ());
568 g_type_class_ref (gst_pad_get_type ());
569 g_type_class_ref (gst_element_factory_get_type ());
570 g_type_class_ref (gst_element_get_type ());
571 g_type_class_ref (gst_type_find_factory_get_type ());
572 g_type_class_ref (gst_bin_get_type ());
573 g_type_class_ref (gst_bus_get_type ());
574 g_type_class_ref (gst_task_get_type ());
575 g_type_class_ref (gst_clock_get_type ());
577 gst_uri_handler_get_type ();
579 g_type_class_ref (gst_object_flags_get_type ());
580 g_type_class_ref (gst_bin_flags_get_type ());
581 g_type_class_ref (gst_buffer_flags_get_type ());
582 g_type_class_ref (gst_buffer_copy_flags_get_type ());
583 g_type_class_ref (gst_bus_flags_get_type ());
584 g_type_class_ref (gst_bus_sync_reply_get_type ());
585 g_type_class_ref (gst_caps_flags_get_type ());
586 g_type_class_ref (gst_clock_return_get_type ());
587 g_type_class_ref (gst_clock_entry_type_get_type ());
588 g_type_class_ref (gst_clock_flags_get_type ());
589 g_type_class_ref (gst_clock_type_get_type ());
590 g_type_class_ref (gst_debug_graph_details_get_type ());
591 g_type_class_ref (gst_state_get_type ());
592 g_type_class_ref (gst_state_change_return_get_type ());
593 g_type_class_ref (gst_state_change_get_type ());
594 g_type_class_ref (gst_element_flags_get_type ());
595 g_type_class_ref (gst_core_error_get_type ());
596 g_type_class_ref (gst_library_error_get_type ());
597 g_type_class_ref (gst_resource_error_get_type ());
598 g_type_class_ref (gst_stream_error_get_type ());
599 g_type_class_ref (gst_event_type_flags_get_type ());
600 g_type_class_ref (gst_event_type_get_type ());
601 g_type_class_ref (gst_seek_type_get_type ());
602 g_type_class_ref (gst_seek_flags_get_type ());
603 g_type_class_ref (gst_qos_type_get_type ());
604 g_type_class_ref (gst_format_get_type ());
605 g_type_class_ref (gst_debug_level_get_type ());
606 g_type_class_ref (gst_debug_color_flags_get_type ());
607 g_type_class_ref (gst_iterator_result_get_type ());
608 g_type_class_ref (gst_iterator_item_get_type ());
609 g_type_class_ref (gst_message_type_get_type ());
610 g_type_class_ref (gst_mini_object_flags_get_type ());
611 g_type_class_ref (gst_pad_link_return_get_type ());
612 g_type_class_ref (gst_pad_link_check_get_type ());
613 g_type_class_ref (gst_flow_return_get_type ());
614 g_type_class_ref (gst_pad_mode_get_type ());
615 g_type_class_ref (gst_pad_direction_get_type ());
616 g_type_class_ref (gst_pad_flags_get_type ());
617 g_type_class_ref (gst_pad_presence_get_type ());
618 g_type_class_ref (gst_pad_template_flags_get_type ());
619 g_type_class_ref (gst_pipeline_flags_get_type ());
620 g_type_class_ref (gst_plugin_error_get_type ());
621 g_type_class_ref (gst_plugin_flags_get_type ());
622 g_type_class_ref (gst_plugin_dependency_flags_get_type ());
623 g_type_class_ref (gst_rank_get_type ());
624 g_type_class_ref (gst_query_type_flags_get_type ());
625 g_type_class_ref (gst_query_type_get_type ());
626 g_type_class_ref (gst_buffering_mode_get_type ());
627 g_type_class_ref (gst_stream_status_type_get_type ());
628 g_type_class_ref (gst_structure_change_type_get_type ());
629 g_type_class_ref (gst_tag_merge_mode_get_type ());
630 g_type_class_ref (gst_tag_flag_get_type ());
631 g_type_class_ref (gst_tag_scope_get_type ());
632 g_type_class_ref (gst_task_pool_get_type ());
633 g_type_class_ref (gst_task_state_get_type ());
634 g_type_class_ref (gst_toc_entry_type_get_type ());
635 g_type_class_ref (gst_type_find_probability_get_type ());
636 g_type_class_ref (gst_uri_error_get_type ());
637 g_type_class_ref (gst_uri_type_get_type ());
638 g_type_class_ref (gst_parse_error_get_type ());
639 g_type_class_ref (gst_parse_flags_get_type ());
640 g_type_class_ref (gst_search_mode_get_type ());
641 g_type_class_ref (gst_progress_type_get_type ());
642 g_type_class_ref (gst_buffer_pool_acquire_flags_get_type ());
643 g_type_class_ref (gst_memory_flags_get_type ());
644 g_type_class_ref (gst_map_flags_get_type ());
645 g_type_class_ref (gst_caps_intersect_mode_get_type ());
646 g_type_class_ref (gst_pad_probe_type_get_type ());
647 g_type_class_ref (gst_pad_probe_return_get_type ());
648 g_type_class_ref (gst_segment_flags_get_type ());
649 g_type_class_ref (gst_scheduling_flags_get_type ());
650 g_type_class_ref (gst_meta_flags_get_type ());
651 g_type_class_ref (gst_toc_entry_type_get_type ());
652 g_type_class_ref (gst_toc_scope_get_type ());
653 g_type_class_ref (gst_control_binding_get_type ());
654 g_type_class_ref (gst_control_source_get_type ());
655 g_type_class_ref (gst_lock_flags_get_type ());
656 g_type_class_ref (gst_allocator_flags_get_type ());
658 _priv_gst_event_initialize ();
659 _priv_gst_buffer_initialize ();
660 _priv_gst_message_initialize ();
661 _priv_gst_buffer_list_initialize ();
662 _priv_gst_sample_initialize ();
663 _priv_gst_value_initialize ();
665 g_type_class_ref (gst_param_spec_fraction_get_type ());
666 _priv_gst_tag_initialize ();
667 gst_parse_context_get_type ();
669 _priv_gst_plugin_initialize ();
671 /* register core plugins */
672 gst_plugin_register_static (GST_VERSION_MAJOR, GST_VERSION_MINOR,
673 "staticelements", "core elements linked into the GStreamer library",
674 gst_register_core_elements, VERSION, GST_LICENSE, PACKAGE,
675 GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
678 * Any errors happening below this point are non-fatal, we therefore mark
679 * gstreamer as being initialized, since it is the case from a plugin point of
682 * If anything fails, it will be put back to FALSE in gst_init_check().
683 * This allows some special plugins that would call gst_init() to not cause a
684 * looping effect (i.e. initializing GStreamer twice).
686 gst_initialized = TRUE;
688 if (!gst_update_registry ())
691 GST_INFO ("GLib runtime version: %d.%d.%d", glib_major_version,
692 glib_minor_version, glib_micro_version);
693 GST_INFO ("GLib headers version: %d.%d.%d", GLIB_MAJOR_VERSION,
694 GLIB_MINOR_VERSION, GLIB_MICRO_VERSION);
699 #ifndef GST_DISABLE_GST_DEBUG
701 select_all (GstPlugin * plugin, gpointer user_data)
707 sort_by_category_name (gconstpointer a, gconstpointer b)
709 return strcmp (gst_debug_category_get_name ((GstDebugCategory *) a),
710 gst_debug_category_get_name ((GstDebugCategory *) b));
714 gst_debug_help (void)
719 /* Need to ensure the registry is loaded to get debug categories */
720 if (!init_post (NULL, NULL, NULL, NULL))
723 list2 = gst_registry_plugin_filter (gst_registry_get (),
724 select_all, FALSE, NULL);
726 /* FIXME this is gross. why don't debug have categories PluginFeatures? */
727 for (g = list2; g; g = g_list_next (g)) {
728 GstPlugin *plugin = GST_PLUGIN_CAST (g->data);
730 gst_plugin_load (plugin);
734 list = gst_debug_get_all_categories ();
735 walk = list = g_slist_sort (list, sort_by_category_name);
738 g_print ("name level description\n");
739 g_print ("---------------------+--------+--------------------------------\n");
742 GstDebugCategory *cat = (GstDebugCategory *) walk->data;
744 if (gst_debug_is_colored ()) {
746 gint color = gst_debug_construct_win_color (cat->color);
747 const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
749 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
750 g_print ("%-20s", gst_debug_category_get_name (cat));
751 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
752 g_print (" %1d %s ", gst_debug_category_get_threshold (cat),
753 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)));
754 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
755 g_print ("%s", gst_debug_category_get_description (cat));
756 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
758 #else /* G_OS_WIN32 */
759 gchar *color = gst_debug_construct_term_color (cat->color);
761 g_print ("%s%-20s\033[00m %1d %s %s%s\033[00m\n",
763 gst_debug_category_get_name (cat),
764 gst_debug_category_get_threshold (cat),
765 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
766 color, gst_debug_category_get_description (cat));
768 #endif /* G_OS_WIN32 */
770 g_print ("%-20s %1d %s %s\n", gst_debug_category_get_name (cat),
771 gst_debug_category_get_threshold (cat),
772 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
773 gst_debug_category_get_description (cat));
775 walk = g_slist_next (walk);
782 #ifndef GST_DISABLE_OPTION_PARSING
784 parse_one_option (gint opt, const gchar * arg, GError ** err)
788 g_print ("GStreamer Core Library version %s\n", PACKAGE_VERSION);
790 case ARG_FATAL_WARNINGS:{
791 GLogLevelFlags fatal_mask;
793 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
794 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
795 g_log_set_always_fatal (fatal_mask);
798 #ifndef GST_DISABLE_GST_DEBUG
799 case ARG_DEBUG_LEVEL:{
800 GstDebugLevel tmp = GST_LEVEL_NONE;
802 tmp = (GstDebugLevel) strtol (arg, NULL, 0);
803 if (((guint) tmp) < GST_LEVEL_COUNT) {
804 gst_debug_set_default_threshold (tmp);
809 gst_debug_set_threshold_from_string (arg, FALSE);
811 case ARG_DEBUG_NO_COLOR:
812 gst_debug_set_colored (FALSE);
814 case ARG_DEBUG_DISABLE:
815 gst_debug_set_active (FALSE);
821 case ARG_PLUGIN_SPEW:
823 case ARG_PLUGIN_PATH:
824 #ifndef GST_DISABLE_REGISTRY
825 split_and_iterate (arg, G_SEARCHPATH_SEPARATOR_S, add_path_func, NULL);
826 #endif /* GST_DISABLE_REGISTRY */
828 case ARG_PLUGIN_LOAD:
829 split_and_iterate (arg, ",", prepare_for_load_plugin_func, NULL);
831 case ARG_SEGTRAP_DISABLE:
832 _gst_disable_segtrap = TRUE;
834 case ARG_REGISTRY_UPDATE_DISABLE:
835 #ifndef GST_DISABLE_REGISTRY
836 _priv_gst_disable_registry_update = TRUE;
839 case ARG_REGISTRY_FORK_DISABLE:
840 gst_registry_fork_set_enabled (FALSE);
843 g_set_error (err, G_OPTION_ERROR, G_OPTION_ERROR_UNKNOWN_OPTION,
844 _("Unknown option"));
852 parse_goption_arg (const gchar * opt,
853 const gchar * arg, gpointer data, GError ** err)
861 "--gst-version", ARG_VERSION}, {
862 "--gst-fatal-warnings", ARG_FATAL_WARNINGS},
863 #ifndef GST_DISABLE_GST_DEBUG
865 "--gst-debug-level", ARG_DEBUG_LEVEL}, {
866 "--gst-debug", ARG_DEBUG}, {
867 "--gst-debug-disable", ARG_DEBUG_DISABLE}, {
868 "--gst-debug-no-color", ARG_DEBUG_NO_COLOR}, {
869 "--gst-debug-help", ARG_DEBUG_HELP},
872 "--gst-plugin-spew", ARG_PLUGIN_SPEW}, {
873 "--gst-plugin-path", ARG_PLUGIN_PATH}, {
874 "--gst-plugin-load", ARG_PLUGIN_LOAD}, {
875 "--gst-disable-segtrap", ARG_SEGTRAP_DISABLE}, {
876 "--gst-disable-registry-update", ARG_REGISTRY_UPDATE_DISABLE}, {
877 "--gst-disable-registry-fork", ARG_REGISTRY_FORK_DISABLE}, {
882 for (n = 0; options[n].opt; n++) {
883 if (!strcmp (opt, options[n].opt)) {
884 val = options[n].val;
889 return parse_one_option (val, arg, err);
896 * Clean up any resources created by GStreamer in gst_init().
898 * It is normally not needed to call this function in a normal application
899 * as the resources will automatically be freed when the program terminates.
900 * This function is therefore mostly used by testsuites and other memory
903 * After this call GStreamer (including this method) should not be used anymore.
910 GST_INFO ("deinitializing GStreamer");
912 if (gst_deinitialized) {
913 GST_DEBUG ("already deinitialized");
917 g_slist_foreach (_priv_gst_preload_plugins, (GFunc) g_free, NULL);
918 g_slist_free (_priv_gst_preload_plugins);
919 _priv_gst_preload_plugins = NULL;
921 #ifndef GST_DISABLE_REGISTRY
922 g_list_foreach (_priv_gst_plugin_paths, (GFunc) g_free, NULL);
923 g_list_free (_priv_gst_plugin_paths);
924 _priv_gst_plugin_paths = NULL;
927 clock = gst_system_clock_obtain ();
928 gst_object_unref (clock);
929 gst_object_unref (clock);
931 _priv_gst_registry_cleanup ();
933 #ifndef GST_DISABLE_TRACE
934 _priv_gst_alloc_trace_deinit ();
937 g_type_class_unref (g_type_class_peek (gst_object_get_type ()));
938 g_type_class_unref (g_type_class_peek (gst_pad_get_type ()));
939 g_type_class_unref (g_type_class_peek (gst_element_factory_get_type ()));
940 g_type_class_unref (g_type_class_peek (gst_element_get_type ()));
941 g_type_class_unref (g_type_class_peek (gst_type_find_factory_get_type ()));
942 g_type_class_unref (g_type_class_peek (gst_bin_get_type ()));
943 g_type_class_unref (g_type_class_peek (gst_bus_get_type ()));
944 g_type_class_unref (g_type_class_peek (gst_task_get_type ()));
945 g_type_class_unref (g_type_class_peek (gst_object_flags_get_type ()));
946 g_type_class_unref (g_type_class_peek (gst_bin_flags_get_type ()));
947 g_type_class_unref (g_type_class_peek (gst_buffer_flags_get_type ()));
948 g_type_class_unref (g_type_class_peek (gst_buffer_copy_flags_get_type ()));
949 g_type_class_unref (g_type_class_peek (gst_bus_flags_get_type ()));
950 g_type_class_unref (g_type_class_peek (gst_bus_sync_reply_get_type ()));
951 g_type_class_unref (g_type_class_peek (gst_caps_flags_get_type ()));
952 g_type_class_unref (g_type_class_peek (gst_clock_type_get_type ()));
953 g_type_class_unref (g_type_class_peek (gst_clock_return_get_type ()));
954 g_type_class_unref (g_type_class_peek (gst_clock_entry_type_get_type ()));
955 g_type_class_unref (g_type_class_peek (gst_clock_flags_get_type ()));
956 g_type_class_unref (g_type_class_peek (gst_debug_graph_details_get_type ()));
957 g_type_class_unref (g_type_class_peek (gst_state_get_type ()));
958 g_type_class_unref (g_type_class_peek (gst_state_change_return_get_type ()));
959 g_type_class_unref (g_type_class_peek (gst_state_change_get_type ()));
960 g_type_class_unref (g_type_class_peek (gst_element_flags_get_type ()));
961 g_type_class_unref (g_type_class_peek (gst_core_error_get_type ()));
962 g_type_class_unref (g_type_class_peek (gst_library_error_get_type ()));
963 g_type_class_unref (g_type_class_peek (gst_plugin_dependency_flags_get_type
965 g_type_class_unref (g_type_class_peek (gst_parse_flags_get_type ()));
966 g_type_class_unref (g_type_class_peek (gst_resource_error_get_type ()));
967 g_type_class_unref (g_type_class_peek (gst_search_mode_get_type ()));
968 g_type_class_unref (g_type_class_peek (gst_stream_error_get_type ()));
969 g_type_class_unref (g_type_class_peek (gst_stream_status_type_get_type ()));
970 g_type_class_unref (g_type_class_peek (gst_structure_change_type_get_type
972 g_type_class_unref (g_type_class_peek (gst_event_type_flags_get_type ()));
973 g_type_class_unref (g_type_class_peek (gst_event_type_get_type ()));
974 g_type_class_unref (g_type_class_peek (gst_seek_type_get_type ()));
975 g_type_class_unref (g_type_class_peek (gst_seek_flags_get_type ()));
976 g_type_class_unref (g_type_class_peek (gst_qos_type_get_type ()));
977 g_type_class_unref (g_type_class_peek (gst_format_get_type ()));
978 g_type_class_unref (g_type_class_peek (gst_debug_level_get_type ()));
979 g_type_class_unref (g_type_class_peek (gst_debug_color_flags_get_type ()));
980 g_type_class_unref (g_type_class_peek (gst_iterator_result_get_type ()));
981 g_type_class_unref (g_type_class_peek (gst_iterator_item_get_type ()));
982 g_type_class_unref (g_type_class_peek (gst_message_type_get_type ()));
983 g_type_class_unref (g_type_class_peek (gst_meta_flags_get_type ()));
984 g_type_class_unref (g_type_class_peek (gst_mini_object_flags_get_type ()));
985 g_type_class_unref (g_type_class_peek (gst_pad_link_return_get_type ()));
986 g_type_class_unref (g_type_class_peek (gst_pad_link_check_get_type ()));
987 g_type_class_unref (g_type_class_peek (gst_flow_return_get_type ()));
988 g_type_class_unref (g_type_class_peek (gst_pad_mode_get_type ()));
989 g_type_class_unref (g_type_class_peek (gst_pad_direction_get_type ()));
990 g_type_class_unref (g_type_class_peek (gst_pad_flags_get_type ()));
991 g_type_class_unref (g_type_class_peek (gst_pad_presence_get_type ()));
992 g_type_class_unref (g_type_class_peek (gst_pad_template_flags_get_type ()));
993 g_type_class_unref (g_type_class_peek (gst_pipeline_flags_get_type ()));
994 g_type_class_unref (g_type_class_peek (gst_plugin_error_get_type ()));
995 g_type_class_unref (g_type_class_peek (gst_plugin_flags_get_type ()));
996 g_type_class_unref (g_type_class_peek (gst_rank_get_type ()));
997 g_type_class_unref (g_type_class_peek (gst_query_type_flags_get_type ()));
998 g_type_class_unref (g_type_class_peek (gst_query_type_get_type ()));
999 g_type_class_unref (g_type_class_peek (gst_buffering_mode_get_type ()));
1000 g_type_class_unref (g_type_class_peek (gst_tag_merge_mode_get_type ()));
1001 g_type_class_unref (g_type_class_peek (gst_tag_flag_get_type ()));
1002 g_type_class_unref (g_type_class_peek (gst_tag_scope_get_type ()));
1003 g_type_class_unref (g_type_class_peek (gst_task_state_get_type ()));
1004 g_type_class_unref (g_type_class_peek (gst_toc_entry_type_get_type ()));
1005 g_type_class_unref (g_type_class_peek (gst_toc_scope_get_type ()));
1006 g_type_class_unref (g_type_class_peek (gst_type_find_probability_get_type
1008 g_type_class_unref (g_type_class_peek (gst_uri_type_get_type ()));
1009 g_type_class_unref (g_type_class_peek (gst_uri_error_get_type ()));
1010 g_type_class_unref (g_type_class_peek (gst_parse_error_get_type ()));
1011 g_type_class_unref (g_type_class_peek (gst_param_spec_fraction_get_type ()));
1012 g_type_class_unref (g_type_class_peek (gst_progress_type_get_type ()));
1013 g_type_class_unref (g_type_class_peek (gst_buffer_pool_acquire_flags_get_type
1015 g_type_class_unref (g_type_class_peek (gst_memory_flags_get_type ()));
1016 g_type_class_unref (g_type_class_peek (gst_map_flags_get_type ()));
1017 g_type_class_unref (g_type_class_peek (gst_caps_intersect_mode_get_type ()));
1018 g_type_class_unref (g_type_class_peek (gst_pad_probe_type_get_type ()));
1019 g_type_class_unref (g_type_class_peek (gst_pad_probe_return_get_type ()));
1020 g_type_class_unref (g_type_class_peek (gst_segment_flags_get_type ()));
1021 g_type_class_unref (g_type_class_peek (gst_scheduling_flags_get_type ()));
1023 g_type_class_unref (g_type_class_peek (gst_control_binding_get_type ()));
1024 g_type_class_unref (g_type_class_peek (gst_control_source_get_type ()));
1025 g_type_class_unref (g_type_class_peek (gst_toc_entry_type_get_type ()));
1026 g_type_class_unref (g_type_class_peek (gst_lock_flags_get_type ()));
1027 g_type_class_unref (g_type_class_peek (gst_allocator_flags_get_type ()));
1030 gst_deinitialized = TRUE;
1031 GST_INFO ("deinitialized GStreamer");
1036 * @major: (out): pointer to a guint to store the major version number
1037 * @minor: (out): pointer to a guint to store the minor version number
1038 * @micro: (out): pointer to a guint to store the micro version number
1039 * @nano: (out): pointer to a guint to store the nano version number
1041 * Gets the version number of the GStreamer library.
1044 gst_version (guint * major, guint * minor, guint * micro, guint * nano)
1046 g_return_if_fail (major);
1047 g_return_if_fail (minor);
1048 g_return_if_fail (micro);
1049 g_return_if_fail (nano);
1051 *major = GST_VERSION_MAJOR;
1052 *minor = GST_VERSION_MINOR;
1053 *micro = GST_VERSION_MICRO;
1054 *nano = GST_VERSION_NANO;
1058 * gst_version_string:
1060 * This function returns a string that is useful for describing this version
1061 * of GStreamer to the outside world: user agent strings, logging, ...
1063 * Returns: (transfer full): a newly allocated string describing this version
1068 gst_version_string (void)
1070 guint major, minor, micro, nano;
1072 gst_version (&major, &minor, µ, &nano);
1074 return g_strdup_printf ("GStreamer %d.%d.%d", major, minor, micro);
1076 return g_strdup_printf ("GStreamer %d.%d.%d (GIT)", major, minor, micro);
1078 return g_strdup_printf ("GStreamer %d.%d.%d (prerelease)", major, minor,
1083 * gst_segtrap_is_enabled:
1085 * Some functions in the GStreamer core might install a custom SIGSEGV handler
1086 * to better catch and report errors to the application. Currently this feature
1087 * is enabled by default when loading plugins.
1089 * Applications might want to disable this behaviour with the
1090 * gst_segtrap_set_enabled() function. This is typically done if the application
1091 * wants to install its own handler without GStreamer interfering.
1093 * Returns: %TRUE if GStreamer is allowed to install a custom SIGSEGV handler.
1096 gst_segtrap_is_enabled (void)
1098 /* yeps, it's enabled when it's not disabled */
1099 return !_gst_disable_segtrap;
1103 * gst_segtrap_set_enabled:
1104 * @enabled: whether a custom SIGSEGV handler should be installed.
1106 * Applications might want to disable/enable the SIGSEGV handling of
1107 * the GStreamer core. See gst_segtrap_is_enabled() for more information.
1110 gst_segtrap_set_enabled (gboolean enabled)
1112 _gst_disable_segtrap = !enabled;