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 discrete
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
96 #include "gst_private.h"
97 #include "gstconfig.h"
100 #include <sys/types.h>
101 #ifdef HAVE_SYS_UTSNAME_H
102 #include <sys/utsname.h>
108 #define WIN32_LEAN_AND_MEAN /* prevents from including too many things */
109 #include <windows.h> /* GetStdHandle, windows console */
112 #include "gst-i18n-lib.h"
113 #include <locale.h> /* for LC_ALL */
116 #include "gsttrace.h"
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;
124 static gboolean gst_deinitialized = FALSE;
127 HMODULE _priv_gst_dll_handle = NULL;
130 #ifndef GST_DISABLE_REGISTRY
131 GList *_priv_gst_plugin_paths = NULL; /* for delayed processing in post_init */
133 extern gboolean _priv_gst_disable_registry_update;
136 #ifndef GST_DISABLE_GST_DEBUG
137 const gchar *priv_gst_dump_dot_dir;
142 /* set to TRUE when segfaults need to be left as is */
143 static gboolean _gst_disable_segtrap = FALSE;
145 static gboolean init_pre (GOptionContext * context, GOptionGroup * group,
146 gpointer data, GError ** error);
147 static gboolean init_post (GOptionContext * context, GOptionGroup * group,
148 gpointer data, GError ** error);
149 #ifndef GST_DISABLE_OPTION_PARSING
150 static gboolean parse_goption_arg (const gchar * s_opt,
151 const gchar * arg, gpointer data, GError ** err);
154 GSList *_priv_gst_preload_plugins = NULL;
156 const gchar g_log_domain_gstreamer[] = "GStreamer";
159 debug_log_handler (const gchar * log_domain,
160 GLogLevelFlags log_level, const gchar * message, gpointer user_data)
162 g_log_default_handler (log_domain, log_level, message, user_data);
163 /* FIXME: do we still need this ? fatal errors these days are all
164 * other than core errors */
165 /* g_on_error_query (NULL); */
172 #ifndef GST_DISABLE_GST_DEBUG
177 ARG_DEBUG_COLOR_MODE,
184 ARG_REGISTRY_UPDATE_DISABLE,
185 ARG_REGISTRY_FORK_DISABLE
188 /* debug-spec ::= category-spec [, category-spec]*
189 * category-spec ::= category:val | val
195 BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved);
197 DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
199 if (fdwReason == DLL_PROCESS_ATTACH)
200 _priv_gst_dll_handle = (HMODULE) hinstDLL;
207 * gst_init_get_option_group: (skip)
209 * Returns a #GOptionGroup with GStreamer's argument specifications. The
210 * group is set up to use standard GOption callbacks, so when using this
211 * group in combination with GOption parsing methods, all argument parsing
212 * and initialization is automated.
214 * This function is useful if you want to integrate GStreamer with other
215 * libraries that use GOption (see g_option_context_add_group() ).
217 * If you use this function, you should make sure you initialise the GLib
218 * threading system as one of the very first things in your program
219 * (see the example at the beginning of this section).
221 * Returns: (transfer full): a pointer to GStreamer's option group.
225 gst_init_get_option_group (void)
227 #ifndef GST_DISABLE_OPTION_PARSING
229 static const GOptionEntry gst_args[] = {
230 {"gst-version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
231 (gpointer) parse_goption_arg, N_("Print the GStreamer version"), NULL},
232 {"gst-fatal-warnings", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
233 (gpointer) parse_goption_arg, N_("Make all warnings fatal"), NULL},
234 #ifndef GST_DISABLE_GST_DEBUG
235 {"gst-debug-help", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
236 (gpointer) parse_goption_arg,
237 N_("Print available debug categories and exit"),
239 {"gst-debug-level", 0, 0, G_OPTION_ARG_CALLBACK,
240 (gpointer) parse_goption_arg,
241 N_("Default debug level from 1 (only error) to 9 (anything) or "
244 {"gst-debug", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg,
245 N_("Comma-separated list of category_name:level pairs to set "
246 "specific levels for the individual categories. Example: "
247 "GST_AUTOPLUG:5,GST_ELEMENT_*:3"),
249 {"gst-debug-no-color", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
250 (gpointer) parse_goption_arg, N_("Disable colored debugging output"),
252 {"gst-debug-color-mode", 0, 0, G_OPTION_ARG_CALLBACK,
253 (gpointer) parse_goption_arg,
254 N_("Changes coloring mode of the debug log. "
255 "Possible modes: off, on, disable, auto, unix"),
257 {"gst-debug-disable", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
258 (gpointer) parse_goption_arg, N_("Disable debugging"), NULL},
260 {"gst-plugin-spew", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
261 (gpointer) parse_goption_arg,
262 N_("Enable verbose plugin loading diagnostics"),
264 {"gst-plugin-path", 0, 0, G_OPTION_ARG_CALLBACK,
265 (gpointer) parse_goption_arg,
266 N_("Colon-separated paths containing plugins"), N_("PATHS")},
267 {"gst-plugin-load", 0, 0, G_OPTION_ARG_CALLBACK,
268 (gpointer) parse_goption_arg,
269 N_("Comma-separated list of plugins to preload in addition to the "
270 "list stored in environment variable GST_PLUGIN_PATH"),
272 {"gst-disable-segtrap", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
273 (gpointer) parse_goption_arg,
274 N_("Disable trapping of segmentation faults during plugin loading"),
276 {"gst-disable-registry-update", 0, G_OPTION_FLAG_NO_ARG,
277 G_OPTION_ARG_CALLBACK,
278 (gpointer) parse_goption_arg,
279 N_("Disable updating the registry"),
281 {"gst-disable-registry-fork", 0, G_OPTION_FLAG_NO_ARG,
282 G_OPTION_ARG_CALLBACK,
283 (gpointer) parse_goption_arg,
284 N_("Disable spawning a helper process while scanning the registry"),
289 group = g_option_group_new ("gst", _("GStreamer Options"),
290 _("Show GStreamer Options"), NULL, NULL);
291 g_option_group_set_parse_hooks (group, (GOptionParseFunc) init_pre,
292 (GOptionParseFunc) init_post);
294 g_option_group_add_entries (group, gst_args);
295 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
305 * @argc: (inout) (allow-none): pointer to application's argc
306 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
307 * @err: pointer to a #GError to which a message will be posted on error
309 * Initializes the GStreamer library, setting up internal path lists,
310 * registering built-in elements, and loading standard plugins.
312 * This function will return %FALSE if GStreamer could not be initialized
313 * for some reason. If you want your program to fail fatally,
314 * use gst_init() instead.
316 * Returns: %TRUE if GStreamer could be initialized.
319 gst_init_check (int *argc, char **argv[], GError ** err)
321 static GMutex init_lock;
322 #ifndef GST_DISABLE_OPTION_PARSING
328 g_mutex_lock (&init_lock);
330 if (gst_initialized) {
331 GST_DEBUG ("already initialized gst");
332 g_mutex_unlock (&init_lock);
335 #ifndef GST_DISABLE_OPTION_PARSING
336 ctx = g_option_context_new ("- GStreamer initialization");
337 g_option_context_set_ignore_unknown_options (ctx, TRUE);
338 g_option_context_set_help_enabled (ctx, FALSE);
339 group = gst_init_get_option_group ();
340 g_option_context_add_group (ctx, group);
341 res = g_option_context_parse (ctx, argc, argv, err);
342 g_option_context_free (ctx);
344 init_pre (NULL, NULL, NULL, NULL);
345 init_post (NULL, NULL, NULL, NULL);
349 gst_initialized = res;
352 GST_INFO ("initialized GStreamer successfully");
354 GST_INFO ("failed to initialize GStreamer");
357 g_mutex_unlock (&init_lock);
364 * @argc: (inout) (allow-none): pointer to application's argc
365 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
367 * Initializes the GStreamer library, setting up internal path lists,
368 * registering built-in elements, and loading standard plugins.
370 * Unless the plugin registry is disabled at compile time, the registry will be
371 * loaded. By default this will also check if the registry cache needs to be
372 * updated and rescan all plugins if needed. See gst_update_registry() for
373 * details and section
374 * <link linkend="gst-running">Running GStreamer Applications</link>
375 * for how to disable automatic registry updates.
378 * This function will terminate your program if it was unable to initialize
379 * GStreamer for some reason. If you want your program to fall back,
380 * use gst_init_check() instead.
383 * WARNING: This function does not work in the same way as corresponding
384 * functions in other glib-style libraries, such as gtk_init\(\). In
385 * particular, unknown command line options cause this function to
386 * abort program execution.
389 gst_init (int *argc, char **argv[])
393 if (!gst_init_check (argc, argv, &err)) {
394 g_print ("Could not initialize GStreamer: %s\n",
395 err ? err->message : "unknown error occurred");
404 * gst_is_initialized:
406 * Use this function to check if GStreamer has been initialized with gst_init()
407 * or gst_init_check().
409 * Returns: %TRUE if initialization has been done, %FALSE otherwise.
412 gst_is_initialized (void)
414 return gst_initialized;
417 #ifndef GST_DISABLE_REGISTRY
419 add_path_func (gpointer data, gpointer user_data)
421 GST_INFO ("Adding plugin path: \"%s\", will scan later", (gchar *) data);
422 _priv_gst_plugin_paths =
423 g_list_append (_priv_gst_plugin_paths, g_strdup (data));
427 #ifndef GST_DISABLE_OPTION_PARSING
429 prepare_for_load_plugin_func (gpointer data, gpointer user_data)
431 _priv_gst_preload_plugins =
432 g_slist_prepend (_priv_gst_preload_plugins, g_strdup (data));
436 #ifndef GST_DISABLE_OPTION_PARSING
438 split_and_iterate (const gchar * stringlist, const gchar * separator,
439 GFunc iterator, gpointer user_data)
443 gchar *lastlist = g_strdup (stringlist);
446 strings = g_strsplit (lastlist, separator, MAX_PATH_SPLIT);
451 iterator (strings[j], user_data);
452 if (++j == MAX_PATH_SPLIT) {
453 lastlist = g_strdup (strings[j]);
458 g_strfreev (strings);
463 /* we have no fail cases yet, but maybe in the future */
465 init_pre (GOptionContext * context, GOptionGroup * group, gpointer data,
469 if (gst_initialized) {
470 GST_DEBUG ("already initialized");
473 #if !GLIB_CHECK_VERSION(2, 35, 0)
477 #ifndef GST_DISABLE_GST_DEBUG
478 _priv_gst_debug_init ();
479 priv_gst_dump_dot_dir = g_getenv ("GST_DEBUG_DUMP_DOT_DIR");
483 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
484 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
485 #endif /* ENABLE_NLS */
487 /* This is the earliest we can make stuff show up in the logs.
488 * So give some useful info about GStreamer here */
492 g_win32_get_package_installation_directory_of_module
493 (_priv_gst_dll_handle);
495 libdir = g_build_filename (basedir,
503 libdir = g_strdup (LIBDIR);
505 GST_INFO ("Initializing GStreamer Core Library version %s", VERSION);
506 GST_INFO ("Using library installed in %s", libdir);
509 /* Print some basic system details if possible (OS/architecture) */
510 #ifdef HAVE_SYS_UTSNAME_H
512 struct utsname sys_details;
514 if (uname (&sys_details) == 0) {
515 GST_INFO ("%s %s %s %s %s", sys_details.sysname,
516 sys_details.nodename, sys_details.release, sys_details.version,
517 sys_details.machine);
522 #ifndef G_ATOMIC_LOCK_FREE
523 GST_CAT_WARNING (GST_CAT_PERFORMANCE, "GLib atomic operations are NOT "
524 "implemented using real hardware atomic operations!");
531 gst_register_core_elements (GstPlugin * plugin)
533 /* register some standard builtin types */
534 if (!gst_element_register (plugin, "bin", GST_RANK_PRIMARY,
536 !gst_element_register (plugin, "pipeline", GST_RANK_PRIMARY,
539 g_assert_not_reached ();
546 * - initalization of threads if we use them
549 * - initializes gst_format
550 * - registers a bunch of types for gst_objects
552 * - we don't have cases yet where this fails, but in the future
553 * we might and then it's nice to be able to return that
556 init_post (GOptionContext * context, GOptionGroup * group, gpointer data,
561 if (gst_initialized) {
562 GST_DEBUG ("already initialized");
566 llf = G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL;
567 g_log_set_handler (g_log_domain_gstreamer, llf, debug_log_handler, NULL);
569 #ifndef GST_DISABLE_TRACE
570 _priv_gst_alloc_trace_initialize ();
573 _priv_gst_mini_object_initialize ();
574 _priv_gst_quarks_initialize ();
575 _priv_gst_allocator_initialize ();
576 _priv_gst_memory_initialize ();
577 _priv_gst_format_initialize ();
578 _priv_gst_query_initialize ();
579 _priv_gst_structure_initialize ();
580 _priv_gst_caps_initialize ();
581 _priv_gst_caps_features_initialize ();
582 _priv_gst_meta_initialize ();
583 _priv_gst_message_initialize ();
585 g_type_class_ref (gst_object_get_type ());
586 g_type_class_ref (gst_pad_get_type ());
587 g_type_class_ref (gst_element_factory_get_type ());
588 g_type_class_ref (gst_element_get_type ());
589 g_type_class_ref (gst_type_find_factory_get_type ());
590 g_type_class_ref (gst_bin_get_type ());
591 g_type_class_ref (gst_bus_get_type ());
592 g_type_class_ref (gst_task_get_type ());
593 g_type_class_ref (gst_clock_get_type ());
594 g_type_class_ref (gst_debug_color_mode_get_type ());
596 gst_uri_handler_get_type ();
598 g_type_class_ref (gst_object_flags_get_type ());
599 g_type_class_ref (gst_bin_flags_get_type ());
600 g_type_class_ref (gst_buffer_flags_get_type ());
601 g_type_class_ref (gst_buffer_copy_flags_get_type ());
602 g_type_class_ref (gst_bus_flags_get_type ());
603 g_type_class_ref (gst_bus_sync_reply_get_type ());
604 g_type_class_ref (gst_caps_flags_get_type ());
605 g_type_class_ref (gst_clock_return_get_type ());
606 g_type_class_ref (gst_clock_entry_type_get_type ());
607 g_type_class_ref (gst_clock_flags_get_type ());
608 g_type_class_ref (gst_clock_type_get_type ());
609 g_type_class_ref (gst_debug_graph_details_get_type ());
610 g_type_class_ref (gst_state_get_type ());
611 g_type_class_ref (gst_state_change_return_get_type ());
612 g_type_class_ref (gst_state_change_get_type ());
613 g_type_class_ref (gst_element_flags_get_type ());
614 g_type_class_ref (gst_core_error_get_type ());
615 g_type_class_ref (gst_library_error_get_type ());
616 g_type_class_ref (gst_resource_error_get_type ());
617 g_type_class_ref (gst_stream_error_get_type ());
618 g_type_class_ref (gst_event_type_flags_get_type ());
619 g_type_class_ref (gst_event_type_get_type ());
620 g_type_class_ref (gst_seek_type_get_type ());
621 g_type_class_ref (gst_seek_flags_get_type ());
622 g_type_class_ref (gst_qos_type_get_type ());
623 g_type_class_ref (gst_format_get_type ());
624 g_type_class_ref (gst_debug_level_get_type ());
625 g_type_class_ref (gst_debug_color_flags_get_type ());
626 g_type_class_ref (gst_iterator_result_get_type ());
627 g_type_class_ref (gst_iterator_item_get_type ());
628 g_type_class_ref (gst_message_type_get_type ());
629 g_type_class_ref (gst_mini_object_flags_get_type ());
630 g_type_class_ref (gst_pad_link_return_get_type ());
631 g_type_class_ref (gst_pad_link_check_get_type ());
632 g_type_class_ref (gst_flow_return_get_type ());
633 g_type_class_ref (gst_pad_mode_get_type ());
634 g_type_class_ref (gst_pad_direction_get_type ());
635 g_type_class_ref (gst_pad_flags_get_type ());
636 g_type_class_ref (gst_pad_presence_get_type ());
637 g_type_class_ref (gst_pad_template_flags_get_type ());
638 g_type_class_ref (gst_pipeline_flags_get_type ());
639 g_type_class_ref (gst_plugin_error_get_type ());
640 g_type_class_ref (gst_plugin_flags_get_type ());
641 g_type_class_ref (gst_plugin_dependency_flags_get_type ());
642 g_type_class_ref (gst_rank_get_type ());
643 g_type_class_ref (gst_query_type_flags_get_type ());
644 g_type_class_ref (gst_query_type_get_type ());
645 g_type_class_ref (gst_buffering_mode_get_type ());
646 g_type_class_ref (gst_stream_status_type_get_type ());
647 g_type_class_ref (gst_structure_change_type_get_type ());
648 g_type_class_ref (gst_tag_merge_mode_get_type ());
649 g_type_class_ref (gst_tag_flag_get_type ());
650 g_type_class_ref (gst_tag_scope_get_type ());
651 g_type_class_ref (gst_task_pool_get_type ());
652 g_type_class_ref (gst_task_state_get_type ());
653 g_type_class_ref (gst_toc_entry_type_get_type ());
654 g_type_class_ref (gst_type_find_probability_get_type ());
655 g_type_class_ref (gst_uri_error_get_type ());
656 g_type_class_ref (gst_uri_type_get_type ());
657 g_type_class_ref (gst_parse_error_get_type ());
658 g_type_class_ref (gst_parse_flags_get_type ());
659 g_type_class_ref (gst_search_mode_get_type ());
660 g_type_class_ref (gst_progress_type_get_type ());
661 g_type_class_ref (gst_buffer_pool_acquire_flags_get_type ());
662 g_type_class_ref (gst_memory_flags_get_type ());
663 g_type_class_ref (gst_map_flags_get_type ());
664 g_type_class_ref (gst_caps_intersect_mode_get_type ());
665 g_type_class_ref (gst_pad_probe_type_get_type ());
666 g_type_class_ref (gst_pad_probe_return_get_type ());
667 g_type_class_ref (gst_segment_flags_get_type ());
668 g_type_class_ref (gst_scheduling_flags_get_type ());
669 g_type_class_ref (gst_meta_flags_get_type ());
670 g_type_class_ref (gst_toc_entry_type_get_type ());
671 g_type_class_ref (gst_toc_scope_get_type ());
672 g_type_class_ref (gst_toc_loop_type_get_type ());
673 g_type_class_ref (gst_control_binding_get_type ());
674 g_type_class_ref (gst_control_source_get_type ());
675 g_type_class_ref (gst_lock_flags_get_type ());
676 g_type_class_ref (gst_allocator_flags_get_type ());
677 g_type_class_ref (gst_stream_flags_get_type ());
679 _priv_gst_event_initialize ();
680 _priv_gst_buffer_initialize ();
681 _priv_gst_buffer_list_initialize ();
682 _priv_gst_sample_initialize ();
683 _priv_gst_context_initialize ();
684 _priv_gst_date_time_initialize ();
685 _priv_gst_tag_initialize ();
686 _priv_gst_toc_initialize ();
687 _priv_gst_value_initialize ();
689 g_type_class_ref (gst_param_spec_fraction_get_type ());
690 gst_parse_context_get_type ();
692 _priv_gst_plugin_initialize ();
694 /* register core plugins */
695 gst_plugin_register_static (GST_VERSION_MAJOR, GST_VERSION_MINOR,
696 "staticelements", "core elements linked into the GStreamer library",
697 gst_register_core_elements, VERSION, GST_LICENSE, PACKAGE,
698 GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
701 * Any errors happening below this point are non-fatal, we therefore mark
702 * gstreamer as being initialized, since it is the case from a plugin point of
705 * If anything fails, it will be put back to %FALSE in gst_init_check().
706 * This allows some special plugins that would call gst_init() to not cause a
707 * looping effect (i.e. initializing GStreamer twice).
709 gst_initialized = TRUE;
711 if (!gst_update_registry ())
714 GST_INFO ("GLib runtime version: %d.%d.%d", glib_major_version,
715 glib_minor_version, glib_micro_version);
716 GST_INFO ("GLib headers version: %d.%d.%d", GLIB_MAJOR_VERSION,
717 GLIB_MINOR_VERSION, GLIB_MICRO_VERSION);
722 #ifndef GST_DISABLE_GST_DEBUG
724 select_all (GstPlugin * plugin, gpointer user_data)
730 sort_by_category_name (gconstpointer a, gconstpointer b)
732 return strcmp (gst_debug_category_get_name ((GstDebugCategory *) a),
733 gst_debug_category_get_name ((GstDebugCategory *) b));
737 gst_debug_help (void)
742 /* Need to ensure the registry is loaded to get debug categories */
743 if (!init_post (NULL, NULL, NULL, NULL))
746 list2 = gst_registry_plugin_filter (gst_registry_get (),
747 select_all, FALSE, NULL);
749 /* FIXME this is gross. why don't debug have categories PluginFeatures? */
750 for (g = list2; g; g = g_list_next (g)) {
751 GstPlugin *plugin = GST_PLUGIN_CAST (g->data);
753 gst_plugin_load (plugin);
757 list = gst_debug_get_all_categories ();
758 walk = list = g_slist_sort (list, sort_by_category_name);
761 g_print ("name level description\n");
762 g_print ("---------------------+--------+--------------------------------\n");
766 GstDebugCategory *cat = (GstDebugCategory *) walk->data;
767 GstDebugColorMode coloring = gst_debug_get_color_mode ();
774 if (GST_DEBUG_COLOR_MODE_UNIX == coloring
775 || (on_unix && GST_DEBUG_COLOR_MODE_ON == coloring)) {
776 gchar *color = gst_debug_construct_term_color (cat->color);
778 g_print ("%s%-20s\033[00m %1d %s %s%s\033[00m\n",
780 gst_debug_category_get_name (cat),
781 gst_debug_category_get_threshold (cat),
782 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
783 color, gst_debug_category_get_description (cat));
785 } else if (GST_DEBUG_COLOR_MODE_ON == coloring && !on_unix) {
787 gint color = gst_debug_construct_win_color (cat->color);
788 const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
790 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
791 g_print ("%-20s", gst_debug_category_get_name (cat));
792 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
793 g_print (" %1d %s ", gst_debug_category_get_threshold (cat),
794 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)));
795 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
796 g_print ("%s", gst_debug_category_get_description (cat));
797 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
799 #endif /* G_OS_WIN32 */
801 g_print ("%-20s %1d %s %s\n", gst_debug_category_get_name (cat),
802 gst_debug_category_get_threshold (cat),
803 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
804 gst_debug_category_get_description (cat));
806 walk = g_slist_next (walk);
813 #ifndef GST_DISABLE_OPTION_PARSING
815 parse_one_option (gint opt, const gchar * arg, GError ** err)
819 g_print ("GStreamer Core Library version %s\n", PACKAGE_VERSION);
821 case ARG_FATAL_WARNINGS:{
822 GLogLevelFlags fatal_mask;
824 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
825 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
826 g_log_set_always_fatal (fatal_mask);
829 #ifndef GST_DISABLE_GST_DEBUG
830 case ARG_DEBUG_LEVEL:{
831 GstDebugLevel tmp = GST_LEVEL_NONE;
833 tmp = (GstDebugLevel) strtol (arg, NULL, 0);
834 if (((guint) tmp) < GST_LEVEL_COUNT) {
835 gst_debug_set_default_threshold (tmp);
840 gst_debug_set_threshold_from_string (arg, FALSE);
842 case ARG_DEBUG_NO_COLOR:
843 gst_debug_set_colored (FALSE);
845 case ARG_DEBUG_COLOR_MODE:
846 gst_debug_set_color_mode_from_string (arg);
848 case ARG_DEBUG_DISABLE:
849 gst_debug_set_active (FALSE);
855 case ARG_PLUGIN_SPEW:
857 case ARG_PLUGIN_PATH:
858 #ifndef GST_DISABLE_REGISTRY
859 split_and_iterate (arg, G_SEARCHPATH_SEPARATOR_S, add_path_func, NULL);
860 #endif /* GST_DISABLE_REGISTRY */
862 case ARG_PLUGIN_LOAD:
863 split_and_iterate (arg, ",", prepare_for_load_plugin_func, NULL);
865 case ARG_SEGTRAP_DISABLE:
866 _gst_disable_segtrap = TRUE;
868 case ARG_REGISTRY_UPDATE_DISABLE:
869 #ifndef GST_DISABLE_REGISTRY
870 _priv_gst_disable_registry_update = TRUE;
873 case ARG_REGISTRY_FORK_DISABLE:
874 gst_registry_fork_set_enabled (FALSE);
877 g_set_error (err, G_OPTION_ERROR, G_OPTION_ERROR_UNKNOWN_OPTION,
878 _("Unknown option"));
886 parse_goption_arg (const gchar * opt,
887 const gchar * arg, gpointer data, GError ** err)
895 "--gst-version", ARG_VERSION}, {
896 "--gst-fatal-warnings", ARG_FATAL_WARNINGS},
897 #ifndef GST_DISABLE_GST_DEBUG
899 "--gst-debug-level", ARG_DEBUG_LEVEL}, {
900 "--gst-debug", ARG_DEBUG}, {
901 "--gst-debug-disable", ARG_DEBUG_DISABLE}, {
902 "--gst-debug-no-color", ARG_DEBUG_NO_COLOR}, {
903 "--gst-debug-color-mode", ARG_DEBUG_COLOR_MODE}, {
904 "--gst-debug-help", ARG_DEBUG_HELP},
907 "--gst-plugin-spew", ARG_PLUGIN_SPEW}, {
908 "--gst-plugin-path", ARG_PLUGIN_PATH}, {
909 "--gst-plugin-load", ARG_PLUGIN_LOAD}, {
910 "--gst-disable-segtrap", ARG_SEGTRAP_DISABLE}, {
911 "--gst-disable-registry-update", ARG_REGISTRY_UPDATE_DISABLE}, {
912 "--gst-disable-registry-fork", ARG_REGISTRY_FORK_DISABLE}, {
917 for (n = 0; options[n].opt; n++) {
918 if (!strcmp (opt, options[n].opt)) {
919 val = options[n].val;
924 return parse_one_option (val, arg, err);
931 * Clean up any resources created by GStreamer in gst_init().
933 * It is normally not needed to call this function in a normal application
934 * as the resources will automatically be freed when the program terminates.
935 * This function is therefore mostly used by testsuites and other memory
938 * After this call GStreamer (including this method) should not be used anymore.
943 GstBinClass *bin_class;
946 GST_INFO ("deinitializing GStreamer");
948 if (gst_deinitialized) {
949 GST_DEBUG ("already deinitialized");
953 g_thread_pool_set_max_unused_threads (0);
954 bin_class = GST_BIN_CLASS (g_type_class_peek (gst_bin_get_type ()));
955 if (bin_class->pool != NULL) {
956 g_thread_pool_free (bin_class->pool, FALSE, TRUE);
957 bin_class->pool = NULL;
959 gst_task_cleanup_all ();
961 g_slist_foreach (_priv_gst_preload_plugins, (GFunc) g_free, NULL);
962 g_slist_free (_priv_gst_preload_plugins);
963 _priv_gst_preload_plugins = NULL;
965 #ifndef GST_DISABLE_REGISTRY
966 g_list_foreach (_priv_gst_plugin_paths, (GFunc) g_free, NULL);
967 g_list_free (_priv_gst_plugin_paths);
968 _priv_gst_plugin_paths = NULL;
971 clock = gst_system_clock_obtain ();
972 gst_object_unref (clock);
973 gst_object_unref (clock);
975 _priv_gst_registry_cleanup ();
977 #ifndef GST_DISABLE_TRACE
978 _priv_gst_alloc_trace_deinit ();
981 g_type_class_unref (g_type_class_peek (gst_object_get_type ()));
982 g_type_class_unref (g_type_class_peek (gst_pad_get_type ()));
983 g_type_class_unref (g_type_class_peek (gst_element_factory_get_type ()));
984 g_type_class_unref (g_type_class_peek (gst_element_get_type ()));
985 g_type_class_unref (g_type_class_peek (gst_type_find_factory_get_type ()));
986 g_type_class_unref (g_type_class_peek (gst_bin_get_type ()));
987 g_type_class_unref (g_type_class_peek (gst_bus_get_type ()));
988 g_type_class_unref (g_type_class_peek (gst_task_get_type ()));
989 g_type_class_unref (g_type_class_peek (gst_object_flags_get_type ()));
990 g_type_class_unref (g_type_class_peek (gst_bin_flags_get_type ()));
991 g_type_class_unref (g_type_class_peek (gst_buffer_flags_get_type ()));
992 g_type_class_unref (g_type_class_peek (gst_buffer_copy_flags_get_type ()));
993 g_type_class_unref (g_type_class_peek (gst_bus_flags_get_type ()));
994 g_type_class_unref (g_type_class_peek (gst_bus_sync_reply_get_type ()));
995 g_type_class_unref (g_type_class_peek (gst_caps_flags_get_type ()));
996 g_type_class_unref (g_type_class_peek (gst_clock_type_get_type ()));
997 g_type_class_unref (g_type_class_peek (gst_clock_return_get_type ()));
998 g_type_class_unref (g_type_class_peek (gst_clock_entry_type_get_type ()));
999 g_type_class_unref (g_type_class_peek (gst_clock_flags_get_type ()));
1000 g_type_class_unref (g_type_class_peek (gst_debug_graph_details_get_type ()));
1001 g_type_class_unref (g_type_class_peek (gst_state_get_type ()));
1002 g_type_class_unref (g_type_class_peek (gst_state_change_return_get_type ()));
1003 g_type_class_unref (g_type_class_peek (gst_state_change_get_type ()));
1004 g_type_class_unref (g_type_class_peek (gst_element_flags_get_type ()));
1005 g_type_class_unref (g_type_class_peek (gst_core_error_get_type ()));
1006 g_type_class_unref (g_type_class_peek (gst_library_error_get_type ()));
1007 g_type_class_unref (g_type_class_peek (gst_plugin_dependency_flags_get_type
1009 g_type_class_unref (g_type_class_peek (gst_parse_flags_get_type ()));
1010 g_type_class_unref (g_type_class_peek (gst_resource_error_get_type ()));
1011 g_type_class_unref (g_type_class_peek (gst_search_mode_get_type ()));
1012 g_type_class_unref (g_type_class_peek (gst_stream_error_get_type ()));
1013 g_type_class_unref (g_type_class_peek (gst_stream_status_type_get_type ()));
1014 g_type_class_unref (g_type_class_peek (gst_structure_change_type_get_type
1016 g_type_class_unref (g_type_class_peek (gst_event_type_flags_get_type ()));
1017 g_type_class_unref (g_type_class_peek (gst_event_type_get_type ()));
1018 g_type_class_unref (g_type_class_peek (gst_seek_type_get_type ()));
1019 g_type_class_unref (g_type_class_peek (gst_seek_flags_get_type ()));
1020 g_type_class_unref (g_type_class_peek (gst_qos_type_get_type ()));
1021 g_type_class_unref (g_type_class_peek (gst_format_get_type ()));
1022 g_type_class_unref (g_type_class_peek (gst_debug_level_get_type ()));
1023 g_type_class_unref (g_type_class_peek (gst_debug_color_flags_get_type ()));
1024 g_type_class_unref (g_type_class_peek (gst_iterator_result_get_type ()));
1025 g_type_class_unref (g_type_class_peek (gst_iterator_item_get_type ()));
1026 g_type_class_unref (g_type_class_peek (gst_message_type_get_type ()));
1027 g_type_class_unref (g_type_class_peek (gst_meta_flags_get_type ()));
1028 g_type_class_unref (g_type_class_peek (gst_mini_object_flags_get_type ()));
1029 g_type_class_unref (g_type_class_peek (gst_pad_link_return_get_type ()));
1030 g_type_class_unref (g_type_class_peek (gst_pad_link_check_get_type ()));
1031 g_type_class_unref (g_type_class_peek (gst_flow_return_get_type ()));
1032 g_type_class_unref (g_type_class_peek (gst_pad_mode_get_type ()));
1033 g_type_class_unref (g_type_class_peek (gst_pad_direction_get_type ()));
1034 g_type_class_unref (g_type_class_peek (gst_pad_flags_get_type ()));
1035 g_type_class_unref (g_type_class_peek (gst_pad_presence_get_type ()));
1036 g_type_class_unref (g_type_class_peek (gst_pad_template_flags_get_type ()));
1037 g_type_class_unref (g_type_class_peek (gst_pipeline_flags_get_type ()));
1038 g_type_class_unref (g_type_class_peek (gst_plugin_error_get_type ()));
1039 g_type_class_unref (g_type_class_peek (gst_plugin_flags_get_type ()));
1040 g_type_class_unref (g_type_class_peek (gst_rank_get_type ()));
1041 g_type_class_unref (g_type_class_peek (gst_query_type_flags_get_type ()));
1042 g_type_class_unref (g_type_class_peek (gst_query_type_get_type ()));
1043 g_type_class_unref (g_type_class_peek (gst_buffering_mode_get_type ()));
1044 g_type_class_unref (g_type_class_peek (gst_tag_merge_mode_get_type ()));
1045 g_type_class_unref (g_type_class_peek (gst_tag_flag_get_type ()));
1046 g_type_class_unref (g_type_class_peek (gst_tag_scope_get_type ()));
1047 g_type_class_unref (g_type_class_peek (gst_task_state_get_type ()));
1048 g_type_class_unref (g_type_class_peek (gst_toc_entry_type_get_type ()));
1049 g_type_class_unref (g_type_class_peek (gst_toc_scope_get_type ()));
1050 g_type_class_unref (g_type_class_peek (gst_type_find_probability_get_type
1052 g_type_class_unref (g_type_class_peek (gst_uri_type_get_type ()));
1053 g_type_class_unref (g_type_class_peek (gst_uri_error_get_type ()));
1054 g_type_class_unref (g_type_class_peek (gst_parse_error_get_type ()));
1055 g_type_class_unref (g_type_class_peek (gst_param_spec_fraction_get_type ()));
1056 g_type_class_unref (g_type_class_peek (gst_progress_type_get_type ()));
1057 g_type_class_unref (g_type_class_peek (gst_buffer_pool_acquire_flags_get_type
1059 g_type_class_unref (g_type_class_peek (gst_memory_flags_get_type ()));
1060 g_type_class_unref (g_type_class_peek (gst_map_flags_get_type ()));
1061 g_type_class_unref (g_type_class_peek (gst_caps_intersect_mode_get_type ()));
1062 g_type_class_unref (g_type_class_peek (gst_pad_probe_type_get_type ()));
1063 g_type_class_unref (g_type_class_peek (gst_pad_probe_return_get_type ()));
1064 g_type_class_unref (g_type_class_peek (gst_segment_flags_get_type ()));
1065 g_type_class_unref (g_type_class_peek (gst_scheduling_flags_get_type ()));
1067 g_type_class_unref (g_type_class_peek (gst_control_binding_get_type ()));
1068 g_type_class_unref (g_type_class_peek (gst_control_source_get_type ()));
1069 g_type_class_unref (g_type_class_peek (gst_toc_entry_type_get_type ()));
1070 g_type_class_unref (g_type_class_peek (gst_toc_loop_type_get_type ()));
1071 g_type_class_unref (g_type_class_peek (gst_lock_flags_get_type ()));
1072 g_type_class_unref (g_type_class_peek (gst_allocator_flags_get_type ()));
1073 g_type_class_unref (g_type_class_peek (gst_stream_flags_get_type ()));
1074 g_type_class_unref (g_type_class_peek (gst_debug_color_mode_get_type ()));
1076 gst_deinitialized = TRUE;
1077 GST_INFO ("deinitialized GStreamer");
1082 * @major: (out): pointer to a guint to store the major version number
1083 * @minor: (out): pointer to a guint to store the minor version number
1084 * @micro: (out): pointer to a guint to store the micro version number
1085 * @nano: (out): pointer to a guint to store the nano version number
1087 * Gets the version number of the GStreamer library.
1090 gst_version (guint * major, guint * minor, guint * micro, guint * nano)
1092 g_return_if_fail (major);
1093 g_return_if_fail (minor);
1094 g_return_if_fail (micro);
1095 g_return_if_fail (nano);
1097 *major = GST_VERSION_MAJOR;
1098 *minor = GST_VERSION_MINOR;
1099 *micro = GST_VERSION_MICRO;
1100 *nano = GST_VERSION_NANO;
1104 * gst_version_string:
1106 * This function returns a string that is useful for describing this version
1107 * of GStreamer to the outside world: user agent strings, logging, ...
1109 * Returns: (transfer full): a newly allocated string describing this version
1114 gst_version_string (void)
1116 guint major, minor, micro, nano;
1118 gst_version (&major, &minor, µ, &nano);
1120 return g_strdup_printf ("GStreamer %d.%d.%d", major, minor, micro);
1122 return g_strdup_printf ("GStreamer %d.%d.%d (GIT)", major, minor, micro);
1124 return g_strdup_printf ("GStreamer %d.%d.%d (prerelease)", major, minor,
1129 * gst_segtrap_is_enabled:
1131 * Some functions in the GStreamer core might install a custom SIGSEGV handler
1132 * to better catch and report errors to the application. Currently this feature
1133 * is enabled by default when loading plugins.
1135 * Applications might want to disable this behaviour with the
1136 * gst_segtrap_set_enabled() function. This is typically done if the application
1137 * wants to install its own handler without GStreamer interfering.
1139 * Returns: %TRUE if GStreamer is allowed to install a custom SIGSEGV handler.
1142 gst_segtrap_is_enabled (void)
1144 /* yeps, it's enabled when it's not disabled */
1145 return !_gst_disable_segtrap;
1149 * gst_segtrap_set_enabled:
1150 * @enabled: whether a custom SIGSEGV handler should be installed.
1152 * Applications might want to disable/enable the SIGSEGV handling of
1153 * the GStreamer core. See gst_segtrap_is_enabled() for more information.
1156 gst_segtrap_set_enabled (gboolean enabled)
1158 _gst_disable_segtrap = !enabled;