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
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 * // must initialise the threading system before using any other GLib funtion
75 * if (!g_thread_supported ())
76 * g_thread_init (NULL);
77 * ctx = g_option_context_new ("[ADDITIONAL ARGUMENTS]");
78 * g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
79 * g_option_context_add_group (ctx, gst_init_get_option_group ());
80 * if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
81 * g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
84 * g_option_context_free (ctx);
90 * Use gst_version() to query the library version at runtime or use the
91 * GST_VERSION_* macros to find the version at compile time. Optionally
92 * gst_version_string() returns a printable string.
94 * The gst_deinit() call is used to clean up all internal resources used
95 * by <application>GStreamer</application>. It is mostly used in unit tests
98 * Last reviewed on 2006-08-11 (0.10.10)
101 #include "gst_private.h"
102 #include "gstconfig.h"
105 #include <sys/types.h>
106 #ifdef HAVE_SYS_UTSNAME_H
107 #include <sys/utsname.h>
113 #define WIN32_LEAN_AND_MEAN /* prevents from including too many things */
114 #include <windows.h> /* GetStdHandle, windows console */
117 #include "gst-i18n-lib.h"
118 #include <locale.h> /* for LC_ALL */
122 #define GST_CAT_DEFAULT GST_CAT_GST_INIT
124 #define MAX_PATH_SPLIT 16
125 #define GST_PLUGIN_SEPARATOR ","
127 static gboolean gst_initialized = FALSE;
128 static gboolean gst_deinitialized = FALSE;
131 HMODULE _priv_gst_dll_handle = NULL;
134 #ifndef GST_DISABLE_REGISTRY
135 GList *_priv_gst_plugin_paths = NULL; /* for delayed processing in post_init */
137 extern gboolean _priv_gst_disable_registry_update;
140 #ifndef GST_DISABLE_GST_DEBUG
141 extern const gchar *priv_gst_dump_dot_dir;
146 /* set to TRUE when segfaults need to be left as is */
147 static gboolean _gst_disable_segtrap = FALSE;
149 static gboolean init_pre (GOptionContext * context, GOptionGroup * group,
150 gpointer data, GError ** error);
151 static gboolean init_post (GOptionContext * context, GOptionGroup * group,
152 gpointer data, GError ** error);
153 #ifndef GST_DISABLE_OPTION_PARSING
154 static gboolean parse_goption_arg (const gchar * s_opt,
155 const gchar * arg, gpointer data, GError ** err);
158 GSList *_priv_gst_preload_plugins = NULL;
160 const gchar g_log_domain_gstreamer[] = "GStreamer";
163 debug_log_handler (const gchar * log_domain,
164 GLogLevelFlags log_level, const gchar * message, gpointer user_data)
166 g_log_default_handler (log_domain, log_level, message, user_data);
167 /* FIXME: do we still need this ? fatal errors these days are all
168 * other than core errors */
169 /* g_on_error_query (NULL); */
176 #ifndef GST_DISABLE_GST_DEBUG
187 ARG_REGISTRY_UPDATE_DISABLE,
188 ARG_REGISTRY_FORK_DISABLE
191 /* debug-spec ::= category-spec [, category-spec]*
192 * category-spec ::= category:val | val
201 #ifndef GST_DISABLE_GST_DEBUG
203 parse_debug_category (gchar * str, const gchar ** category)
220 parse_debug_level (gchar * str, gint * level)
228 if (str[0] != NUL && str[1] == NUL
229 && str[0] >= '0' && str[0] < '0' + GST_LEVEL_COUNT) {
230 *level = str[0] - '0';
238 parse_debug_list (const gchar * list)
245 split = g_strsplit (list, ",", 0);
247 for (walk = split; *walk; walk++) {
248 if (strchr (*walk, ':')) {
249 gchar **values = g_strsplit (*walk, ":", 2);
251 if (values[0] && values[1]) {
253 const gchar *category;
255 if (parse_debug_category (values[0], &category)
256 && parse_debug_level (values[1], &level))
257 gst_debug_set_threshold_for_name (category, level);
264 if (parse_debug_level (*walk, &level))
265 gst_debug_set_default_threshold (level);
274 BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved);
276 DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
278 if (fdwReason == DLL_PROCESS_ATTACH)
279 _priv_gst_dll_handle = (HMODULE) hinstDLL;
286 * gst_init_get_option_group:
288 * Returns a #GOptionGroup with GStreamer's argument specifications. The
289 * group is set up to use standard GOption callbacks, so when using this
290 * group in combination with GOption parsing methods, all argument parsing
291 * and initialization is automated.
293 * This function is useful if you want to integrate GStreamer with other
294 * libraries that use GOption (see g_option_context_add_group() ).
296 * If you use this function, you should make sure you initialise the GLib
297 * threading system as one of the very first things in your program
298 * (see the example at the beginning of this section).
300 * Returns: a pointer to GStreamer's option group.
304 gst_init_get_option_group (void)
306 #ifndef GST_DISABLE_OPTION_PARSING
308 static const GOptionEntry gst_args[] = {
309 {"gst-version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
310 (gpointer) parse_goption_arg, N_("Print the GStreamer version"), NULL},
311 {"gst-fatal-warnings", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
312 (gpointer) parse_goption_arg, N_("Make all warnings fatal"), NULL},
313 #ifndef GST_DISABLE_GST_DEBUG
314 {"gst-debug-help", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
315 (gpointer) parse_goption_arg,
316 N_("Print available debug categories and exit"),
318 {"gst-debug-level", 0, 0, G_OPTION_ARG_CALLBACK,
319 (gpointer) parse_goption_arg,
320 N_("Default debug level from 1 (only error) to 5 (anything) or "
323 {"gst-debug", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg,
324 N_("Comma-separated list of category_name:level pairs to set "
325 "specific levels for the individual categories. Example: "
326 "GST_AUTOPLUG:5,GST_ELEMENT_*:3"),
328 {"gst-debug-no-color", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
329 (gpointer) parse_goption_arg, N_("Disable colored debugging output"),
331 {"gst-debug-disable", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
332 (gpointer) parse_goption_arg, N_("Disable debugging"), NULL},
334 {"gst-plugin-spew", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
335 (gpointer) parse_goption_arg,
336 N_("Enable verbose plugin loading diagnostics"),
338 {"gst-plugin-path", 0, 0, G_OPTION_ARG_CALLBACK,
339 (gpointer) parse_goption_arg,
340 N_("Colon-separated paths containing plugins"), N_("PATHS")},
341 {"gst-plugin-load", 0, 0, G_OPTION_ARG_CALLBACK,
342 (gpointer) parse_goption_arg,
343 N_("Comma-separated list of plugins to preload in addition to the "
344 "list stored in environment variable GST_PLUGIN_PATH"),
346 {"gst-disable-segtrap", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
347 (gpointer) parse_goption_arg,
348 N_("Disable trapping of segmentation faults during plugin loading"),
350 {"gst-disable-registry-update", 0, G_OPTION_FLAG_NO_ARG,
351 G_OPTION_ARG_CALLBACK,
352 (gpointer) parse_goption_arg,
353 N_("Disable updating the registry"),
355 {"gst-disable-registry-fork", 0, G_OPTION_FLAG_NO_ARG,
356 G_OPTION_ARG_CALLBACK,
357 (gpointer) parse_goption_arg,
358 N_("Disable spawning a helper process while scanning the registry"),
363 /* Since GLib 2.23.2 calling g_thread_init() 'late' is allowed and is
364 * automatically done as part of g_type_init() */
365 if (glib_check_version (2, 23, 3)) {
366 /* The GLib threading system must be initialised before calling any other
367 * GLib function according to the documentation; if the application hasn't
368 * called gst_init() yet or initialised the threading system otherwise, we
369 * better issue a warning here (since chances are high that the application
370 * has already called other GLib functions such as g_option_context_new() */
371 if (!g_thread_get_initialized ()) {
372 g_warning ("The GStreamer function gst_init_get_option_group() was\n"
373 "\tcalled, but the GLib threading system has not been initialised\n"
374 "\tyet, something that must happen before any other GLib function\n"
375 "\tis called. The application needs to be fixed so that it calls\n"
376 "\t if (!g_thread_get_initialized ()) g_thread_init(NULL);\n"
377 "\tas very first thing in its main() function. Please file a bug\n"
378 "\tagainst this application.");
379 g_thread_init (NULL);
385 group = g_option_group_new ("gst", _("GStreamer Options"),
386 _("Show GStreamer Options"), NULL, NULL);
387 g_option_group_set_parse_hooks (group, (GOptionParseFunc) init_pre,
388 (GOptionParseFunc) init_post);
390 g_option_group_add_entries (group, gst_args);
391 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
401 * @argc: (inout): pointer to application's argc
402 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
403 * @err: pointer to a #GError to which a message will be posted on error
405 * Initializes the GStreamer library, setting up internal path lists,
406 * registering built-in elements, and loading standard plugins.
408 * This function will return %FALSE if GStreamer could not be initialized
409 * for some reason. If you want your program to fail fatally,
410 * use gst_init() instead.
412 * This function should be called before calling any other GLib functions. If
413 * this is not an option, your program must initialise the GLib thread system
414 * using g_thread_init() before any other GLib functions are called.
416 * Returns: %TRUE if GStreamer could be initialized.
419 gst_init_check (int *argc, char **argv[], GError ** err)
421 #ifndef GST_DISABLE_OPTION_PARSING
427 if (!g_thread_get_initialized ())
428 g_thread_init (NULL);
430 if (gst_initialized) {
431 GST_DEBUG ("already initialized gst");
434 #ifndef GST_DISABLE_OPTION_PARSING
435 ctx = g_option_context_new ("- GStreamer initialization");
436 g_option_context_set_ignore_unknown_options (ctx, TRUE);
437 group = gst_init_get_option_group ();
438 g_option_context_add_group (ctx, group);
439 res = g_option_context_parse (ctx, argc, argv, err);
440 g_option_context_free (ctx);
442 init_pre (NULL, NULL, NULL, NULL);
443 init_post (NULL, NULL, NULL, NULL);
447 gst_initialized = res;
450 GST_INFO ("initialized GStreamer successfully");
452 GST_INFO ("failed to initialize GStreamer");
460 * @argc: (inout): pointer to application's argc
461 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
463 * Initializes the GStreamer library, setting up internal path lists,
464 * registering built-in elements, and loading standard plugins.
466 * Unless the plugin registry is disabled at compile time, the registry will be
467 * loaded. By default this will also check if the registry cache needs to be
468 * updated and rescan all plugins if needed. See gst_update_registry() for
469 * details and section
470 * <link linkend="gst-running">Running GStreamer Applications</link>
471 * for how to disable automatic registry updates.
473 * This function should be called before calling any other GLib functions. If
474 * this is not an option, your program must initialise the GLib thread system
475 * using g_thread_init() before any other GLib functions are called.
478 * This function will terminate your program if it was unable to initialize
479 * GStreamer for some reason. If you want your program to fall back,
480 * use gst_init_check() instead.
483 * WARNING: This function does not work in the same way as corresponding
484 * functions in other glib-style libraries, such as gtk_init(). In
485 * particular, unknown command line options cause this function to
486 * abort program execution.
489 gst_init (int *argc, char **argv[])
493 if (!gst_init_check (argc, argv, &err)) {
494 g_print ("Could not initialize GStreamer: %s\n",
495 err ? err->message : "unknown error occurred");
504 * gst_is_initialized:
506 * Use this function to check if GStreamer has been initialized with gst_init()
507 * or gst_init_check().
509 * Returns: TRUE if initialization has been done, FALSE otherwise.
514 gst_is_initialized (void)
516 return gst_initialized;
519 #ifndef GST_DISABLE_REGISTRY
521 add_path_func (gpointer data, gpointer user_data)
523 GST_INFO ("Adding plugin path: \"%s\", will scan later", (gchar *) data);
524 _priv_gst_plugin_paths =
525 g_list_append (_priv_gst_plugin_paths, g_strdup (data));
529 #ifndef GST_DISABLE_OPTION_PARSING
531 prepare_for_load_plugin_func (gpointer data, gpointer user_data)
533 _priv_gst_preload_plugins =
534 g_slist_prepend (_priv_gst_preload_plugins, g_strdup (data));
538 #ifndef GST_DISABLE_OPTION_PARSING
540 split_and_iterate (const gchar * stringlist, const gchar * separator,
541 GFunc iterator, gpointer user_data)
545 gchar *lastlist = g_strdup (stringlist);
548 strings = g_strsplit (lastlist, separator, MAX_PATH_SPLIT);
553 iterator (strings[j], user_data);
554 if (++j == MAX_PATH_SPLIT) {
555 lastlist = g_strdup (strings[j]);
560 g_strfreev (strings);
565 /* we have no fail cases yet, but maybe in the future */
567 init_pre (GOptionContext * context, GOptionGroup * group, gpointer data,
570 if (gst_initialized) {
571 GST_DEBUG ("already initialized");
575 /* GStreamer was built against a GLib >= 2.8 and is therefore not doing
576 * the refcount hack. Check that it isn't being run against an older GLib */
577 if (glib_major_version < 2 ||
578 (glib_major_version == 2 && glib_minor_version < 8)) {
579 g_warning ("GStreamer was compiled against GLib %d.%d.%d but is running"
580 " against %d.%d.%d. This will cause reference counting issues",
581 GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION, GLIB_MICRO_VERSION,
582 glib_major_version, glib_minor_version, glib_micro_version);
587 /* we need threading to be enabled right here */
588 g_assert (g_thread_get_initialized ());
593 setlocale (LC_ALL, "");
594 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
595 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
596 #endif /* ENABLE_NLS */
598 #ifndef GST_DISABLE_GST_DEBUG
600 const gchar *debug_list;
602 if (g_getenv ("GST_DEBUG_NO_COLOR") != NULL)
603 gst_debug_set_colored (FALSE);
605 debug_list = g_getenv ("GST_DEBUG");
607 parse_debug_list (debug_list);
611 priv_gst_dump_dot_dir = g_getenv ("GST_DEBUG_DUMP_DOT_DIR");
613 /* This is the earliest we can make stuff show up in the logs.
614 * So give some useful info about GStreamer here */
615 GST_INFO ("Initializing GStreamer Core Library version %s", VERSION);
616 GST_INFO ("Using library installed in %s", LIBDIR);
618 /* Print some basic system details if possible (OS/architecture) */
619 #ifdef HAVE_SYS_UTSNAME_H
621 struct utsname sys_details;
623 if (uname (&sys_details) == 0) {
624 GST_INFO ("%s %s %s %s %s", sys_details.sysname,
625 sys_details.nodename, sys_details.release, sys_details.version,
626 sys_details.machine);
635 gst_register_core_elements (GstPlugin * plugin)
637 /* register some standard builtin types */
638 if (!gst_element_register (plugin, "bin", GST_RANK_PRIMARY,
640 !gst_element_register (plugin, "pipeline", GST_RANK_PRIMARY,
643 g_assert_not_reached ();
650 * - initalization of threads if we use them
653 * - initializes gst_format
654 * - registers a bunch of types for gst_objects
656 * - we don't have cases yet where this fails, but in the future
657 * we might and then it's nice to be able to return that
660 init_post (GOptionContext * context, GOptionGroup * group, gpointer data,
665 #ifndef GST_DISABLE_TRACE
667 #endif /* GST_DISABLE_TRACE */
669 if (gst_initialized) {
670 GST_DEBUG ("already initialized");
674 llf = G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL;
675 g_log_set_handler (g_log_domain_gstreamer, llf, debug_log_handler, NULL);
677 _priv_gst_quarks_initialize ();
678 _gst_format_initialize ();
679 _gst_query_initialize ();
680 g_type_class_ref (gst_object_get_type ());
681 g_type_class_ref (gst_pad_get_type ());
682 g_type_class_ref (gst_element_factory_get_type ());
683 g_type_class_ref (gst_element_get_type ());
684 g_type_class_ref (gst_type_find_factory_get_type ());
685 g_type_class_ref (gst_bin_get_type ());
686 g_type_class_ref (gst_bus_get_type ());
687 g_type_class_ref (gst_task_get_type ());
688 g_type_class_ref (gst_clock_get_type ());
690 g_type_class_ref (gst_index_factory_get_type ());
691 gst_uri_handler_get_type ();
693 g_type_class_ref (gst_object_flags_get_type ());
694 g_type_class_ref (gst_bin_flags_get_type ());
695 g_type_class_ref (gst_buffer_flag_get_type ());
696 g_type_class_ref (gst_buffer_copy_flags_get_type ());
697 g_type_class_ref (gst_buffer_list_item_get_type ());
698 g_type_class_ref (gst_bus_flags_get_type ());
699 g_type_class_ref (gst_bus_sync_reply_get_type ());
700 g_type_class_ref (gst_caps_flags_get_type ());
701 g_type_class_ref (gst_clock_return_get_type ());
702 g_type_class_ref (gst_clock_entry_type_get_type ());
703 g_type_class_ref (gst_clock_flags_get_type ());
704 g_type_class_ref (gst_clock_type_get_type ());
705 g_type_class_ref (gst_debug_graph_details_get_type ());
706 g_type_class_ref (gst_state_get_type ());
707 g_type_class_ref (gst_state_change_return_get_type ());
708 g_type_class_ref (gst_state_change_get_type ());
709 g_type_class_ref (gst_element_flags_get_type ());
710 g_type_class_ref (gst_core_error_get_type ());
711 g_type_class_ref (gst_library_error_get_type ());
712 g_type_class_ref (gst_resource_error_get_type ());
713 g_type_class_ref (gst_stream_error_get_type ());
714 g_type_class_ref (gst_event_type_flags_get_type ());
715 g_type_class_ref (gst_event_type_get_type ());
716 g_type_class_ref (gst_seek_type_get_type ());
717 g_type_class_ref (gst_seek_flags_get_type ());
718 g_type_class_ref (gst_format_get_type ());
719 g_type_class_ref (gst_index_certainty_get_type ());
720 g_type_class_ref (gst_index_entry_type_get_type ());
721 g_type_class_ref (gst_index_lookup_method_get_type ());
722 g_type_class_ref (gst_assoc_flags_get_type ());
723 g_type_class_ref (gst_index_resolver_method_get_type ());
724 g_type_class_ref (gst_index_flags_get_type ());
725 g_type_class_ref (gst_debug_level_get_type ());
726 g_type_class_ref (gst_debug_color_flags_get_type ());
727 g_type_class_ref (gst_iterator_result_get_type ());
728 g_type_class_ref (gst_iterator_item_get_type ());
729 g_type_class_ref (gst_message_type_get_type ());
730 g_type_class_ref (gst_mini_object_flags_get_type ());
731 g_type_class_ref (gst_pad_link_return_get_type ());
732 g_type_class_ref (gst_pad_link_check_get_type ());
733 g_type_class_ref (gst_flow_return_get_type ());
734 g_type_class_ref (gst_activate_mode_get_type ());
735 g_type_class_ref (gst_pad_direction_get_type ());
736 g_type_class_ref (gst_pad_flags_get_type ());
737 g_type_class_ref (gst_pad_presence_get_type ());
738 g_type_class_ref (gst_pad_template_flags_get_type ());
739 g_type_class_ref (gst_pipeline_flags_get_type ());
740 g_type_class_ref (gst_plugin_error_get_type ());
741 g_type_class_ref (gst_plugin_flags_get_type ());
742 g_type_class_ref (gst_plugin_dependency_flags_get_type ());
743 g_type_class_ref (gst_rank_get_type ());
744 g_type_class_ref (gst_query_type_get_type ());
745 g_type_class_ref (gst_buffering_mode_get_type ());
746 g_type_class_ref (gst_stream_status_type_get_type ());
747 g_type_class_ref (gst_structure_change_type_get_type ());
748 g_type_class_ref (gst_tag_merge_mode_get_type ());
749 g_type_class_ref (gst_tag_flag_get_type ());
750 g_type_class_ref (gst_task_pool_get_type ());
751 g_type_class_ref (gst_task_state_get_type ());
752 g_type_class_ref (gst_alloc_trace_flags_get_type ());
753 g_type_class_ref (gst_type_find_probability_get_type ());
754 g_type_class_ref (gst_uri_type_get_type ());
755 g_type_class_ref (gst_parse_error_get_type ());
756 g_type_class_ref (gst_parse_flags_get_type ());
757 g_type_class_ref (gst_search_mode_get_type ());
759 gst_structure_get_type ();
760 _gst_value_initialize ();
761 g_type_class_ref (gst_param_spec_fraction_get_type ());
762 gst_caps_get_type ();
763 _gst_event_initialize ();
764 _gst_buffer_initialize ();
765 _gst_buffer_list_initialize ();
766 _gst_message_initialize ();
767 _gst_tag_initialize ();
769 _gst_plugin_initialize ();
771 gst_g_error_get_type ();
773 /* register core plugins */
774 gst_plugin_register_static (GST_VERSION_MAJOR, GST_VERSION_MINOR,
775 "staticelements", "core elements linked into the GStreamer library",
776 gst_register_core_elements, VERSION, GST_LICENSE, PACKAGE,
777 GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
780 * Any errors happening below this point are non-fatal, we therefore mark
781 * gstreamer as being initialized, since it is the case from a plugin point of
784 * If anything fails, it will be put back to FALSE in gst_init_check().
785 * This allows some special plugins that would call gst_init() to not cause a
786 * looping effect (i.e. initializing GStreamer twice).
788 gst_initialized = TRUE;
790 if (!gst_update_registry ())
793 #ifndef GST_DISABLE_TRACE
796 gst_trace = gst_trace_new ("gst.trace", 1024);
797 gst_trace_set_default (gst_trace);
799 #endif /* GST_DISABLE_TRACE */
801 GST_INFO ("GLib runtime version: %d.%d.%d", glib_major_version,
802 glib_minor_version, glib_micro_version);
803 GST_INFO ("GLib headers version: %d.%d.%d", GLIB_MAJOR_VERSION,
804 GLIB_MINOR_VERSION, GLIB_MICRO_VERSION);
809 #ifndef GST_DISABLE_GST_DEBUG
811 select_all (GstPlugin * plugin, gpointer user_data)
817 sort_by_category_name (gconstpointer a, gconstpointer b)
819 return strcmp (gst_debug_category_get_name ((GstDebugCategory *) a),
820 gst_debug_category_get_name ((GstDebugCategory *) b));
824 gst_debug_help (void)
829 /* Need to ensure the registry is loaded to get debug categories */
830 if (!init_post (NULL, NULL, NULL, NULL))
833 list2 = gst_registry_plugin_filter (gst_registry_get_default (),
834 select_all, FALSE, NULL);
836 /* FIXME this is gross. why don't debug have categories PluginFeatures? */
837 for (g = list2; g; g = g_list_next (g)) {
838 GstPlugin *plugin = GST_PLUGIN_CAST (g->data);
840 gst_plugin_load (plugin);
844 list = gst_debug_get_all_categories ();
845 walk = list = g_slist_sort (list, sort_by_category_name);
848 g_print ("name level description\n");
849 g_print ("---------------------+--------+--------------------------------\n");
852 GstDebugCategory *cat = (GstDebugCategory *) walk->data;
854 if (gst_debug_is_colored ()) {
856 gint color = gst_debug_construct_win_color (cat->color);
857 const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
859 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
860 g_print ("%-20s", gst_debug_category_get_name (cat));
861 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
862 g_print (" %1d %s ", gst_debug_category_get_threshold (cat),
863 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)));
864 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
865 g_print ("%s", gst_debug_category_get_description (cat));
866 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
868 #else /* G_OS_WIN32 */
869 gchar *color = gst_debug_construct_term_color (cat->color);
871 g_print ("%s%-20s\033[00m %1d %s %s%s\033[00m\n",
873 gst_debug_category_get_name (cat),
874 gst_debug_category_get_threshold (cat),
875 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
876 color, gst_debug_category_get_description (cat));
878 #endif /* G_OS_WIN32 */
880 g_print ("%-20s %1d %s %s\n", gst_debug_category_get_name (cat),
881 gst_debug_category_get_threshold (cat),
882 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
883 gst_debug_category_get_description (cat));
885 walk = g_slist_next (walk);
892 #ifndef GST_DISABLE_OPTION_PARSING
894 parse_one_option (gint opt, const gchar * arg, GError ** err)
898 g_print ("GStreamer Core Library version %s\n", PACKAGE_VERSION);
900 case ARG_FATAL_WARNINGS:{
901 GLogLevelFlags fatal_mask;
903 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
904 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
905 g_log_set_always_fatal (fatal_mask);
908 #ifndef GST_DISABLE_GST_DEBUG
909 case ARG_DEBUG_LEVEL:{
912 tmp = strtol (arg, NULL, 0);
913 if (tmp >= 0 && tmp < GST_LEVEL_COUNT) {
914 gst_debug_set_default_threshold (tmp);
919 parse_debug_list (arg);
921 case ARG_DEBUG_NO_COLOR:
922 gst_debug_set_colored (FALSE);
924 case ARG_DEBUG_DISABLE:
925 gst_debug_set_active (FALSE);
931 case ARG_PLUGIN_SPEW:
933 case ARG_PLUGIN_PATH:
934 #ifndef GST_DISABLE_REGISTRY
935 split_and_iterate (arg, G_SEARCHPATH_SEPARATOR_S, add_path_func, NULL);
936 #endif /* GST_DISABLE_REGISTRY */
938 case ARG_PLUGIN_LOAD:
939 split_and_iterate (arg, ",", prepare_for_load_plugin_func, NULL);
941 case ARG_SEGTRAP_DISABLE:
942 _gst_disable_segtrap = TRUE;
944 case ARG_REGISTRY_UPDATE_DISABLE:
945 #ifndef GST_DISABLE_REGISTRY
946 _priv_gst_disable_registry_update = TRUE;
949 case ARG_REGISTRY_FORK_DISABLE:
950 gst_registry_fork_set_enabled (FALSE);
953 g_set_error (err, G_OPTION_ERROR, G_OPTION_ERROR_UNKNOWN_OPTION,
954 _("Unknown option"));
962 parse_goption_arg (const gchar * opt,
963 const gchar * arg, gpointer data, GError ** err)
971 "--gst-version", ARG_VERSION}, {
972 "--gst-fatal-warnings", ARG_FATAL_WARNINGS},
973 #ifndef GST_DISABLE_GST_DEBUG
975 "--gst-debug-level", ARG_DEBUG_LEVEL}, {
976 "--gst-debug", ARG_DEBUG}, {
977 "--gst-debug-disable", ARG_DEBUG_DISABLE}, {
978 "--gst-debug-no-color", ARG_DEBUG_NO_COLOR}, {
979 "--gst-debug-help", ARG_DEBUG_HELP},
982 "--gst-plugin-spew", ARG_PLUGIN_SPEW}, {
983 "--gst-plugin-path", ARG_PLUGIN_PATH}, {
984 "--gst-plugin-load", ARG_PLUGIN_LOAD}, {
985 "--gst-disable-segtrap", ARG_SEGTRAP_DISABLE}, {
986 "--gst-disable-registry-update", ARG_REGISTRY_UPDATE_DISABLE}, {
987 "--gst-disable-registry-fork", ARG_REGISTRY_FORK_DISABLE}, {
992 for (n = 0; options[n].opt; n++) {
993 if (!strcmp (opt, options[n].opt)) {
994 val = options[n].val;
999 return parse_one_option (val, arg, err);
1006 * Clean up any resources created by GStreamer in gst_init().
1008 * It is normally not needed to call this function in a normal application
1009 * as the resources will automatically be freed when the program terminates.
1010 * This function is therefore mostly used by testsuites and other memory
1013 * After this call GStreamer (including this method) should not be used anymore.
1020 GST_INFO ("deinitializing GStreamer");
1022 if (gst_deinitialized) {
1023 GST_DEBUG ("already deinitialized");
1027 g_slist_foreach (_priv_gst_preload_plugins, (GFunc) g_free, NULL);
1028 g_slist_free (_priv_gst_preload_plugins);
1029 _priv_gst_preload_plugins = NULL;
1031 #ifndef GST_DISABLE_REGISTRY
1032 g_list_foreach (_priv_gst_plugin_paths, (GFunc) g_free, NULL);
1033 g_list_free (_priv_gst_plugin_paths);
1034 _priv_gst_plugin_paths = NULL;
1037 clock = gst_system_clock_obtain ();
1038 gst_object_unref (clock);
1039 gst_object_unref (clock);
1041 _priv_gst_registry_cleanup ();
1043 g_type_class_unref (g_type_class_peek (gst_object_get_type ()));
1044 g_type_class_unref (g_type_class_peek (gst_pad_get_type ()));
1045 g_type_class_unref (g_type_class_peek (gst_element_factory_get_type ()));
1046 g_type_class_unref (g_type_class_peek (gst_element_get_type ()));
1047 g_type_class_unref (g_type_class_peek (gst_type_find_factory_get_type ()));
1048 g_type_class_unref (g_type_class_peek (gst_bin_get_type ()));
1049 g_type_class_unref (g_type_class_peek (gst_bus_get_type ()));
1050 g_type_class_unref (g_type_class_peek (gst_task_get_type ()));
1051 g_type_class_unref (g_type_class_peek (gst_index_factory_get_type ()));
1052 g_type_class_unref (g_type_class_peek (gst_object_flags_get_type ()));
1053 g_type_class_unref (g_type_class_peek (gst_bin_flags_get_type ()));
1054 g_type_class_unref (g_type_class_peek (gst_buffer_flag_get_type ()));
1055 g_type_class_unref (g_type_class_peek (gst_buffer_copy_flags_get_type ()));
1056 g_type_class_unref (g_type_class_peek (gst_buffer_list_item_get_type ()));
1057 g_type_class_unref (g_type_class_peek (gst_bus_flags_get_type ()));
1058 g_type_class_unref (g_type_class_peek (gst_bus_sync_reply_get_type ()));
1059 g_type_class_unref (g_type_class_peek (gst_caps_flags_get_type ()));
1060 g_type_class_unref (g_type_class_peek (gst_clock_type_get_type ()));
1061 g_type_class_unref (g_type_class_peek (gst_clock_return_get_type ()));
1062 g_type_class_unref (g_type_class_peek (gst_clock_entry_type_get_type ()));
1063 g_type_class_unref (g_type_class_peek (gst_clock_flags_get_type ()));
1064 g_type_class_unref (g_type_class_peek (gst_debug_graph_details_get_type ()));
1065 g_type_class_unref (g_type_class_peek (gst_state_get_type ()));
1066 g_type_class_unref (g_type_class_peek (gst_state_change_return_get_type ()));
1067 g_type_class_unref (g_type_class_peek (gst_state_change_get_type ()));
1068 g_type_class_unref (g_type_class_peek (gst_element_flags_get_type ()));
1069 g_type_class_unref (g_type_class_peek (gst_core_error_get_type ()));
1070 g_type_class_unref (g_type_class_peek (gst_library_error_get_type ()));
1071 g_type_class_unref (g_type_class_peek (gst_plugin_dependency_flags_get_type
1073 g_type_class_unref (g_type_class_peek (gst_parse_flags_get_type ()));
1074 g_type_class_unref (g_type_class_peek (gst_resource_error_get_type ()));
1075 g_type_class_unref (g_type_class_peek (gst_search_mode_get_type ()));
1076 g_type_class_unref (g_type_class_peek (gst_stream_error_get_type ()));
1077 g_type_class_unref (g_type_class_peek (gst_stream_status_type_get_type ()));
1078 g_type_class_unref (g_type_class_peek (gst_structure_change_type_get_type
1080 g_type_class_unref (g_type_class_peek (gst_event_type_flags_get_type ()));
1081 g_type_class_unref (g_type_class_peek (gst_event_type_get_type ()));
1082 g_type_class_unref (g_type_class_peek (gst_seek_type_get_type ()));
1083 g_type_class_unref (g_type_class_peek (gst_seek_flags_get_type ()));
1084 g_type_class_unref (g_type_class_peek (gst_format_get_type ()));
1085 g_type_class_unref (g_type_class_peek (gst_index_certainty_get_type ()));
1086 g_type_class_unref (g_type_class_peek (gst_index_entry_type_get_type ()));
1087 g_type_class_unref (g_type_class_peek (gst_index_lookup_method_get_type ()));
1088 g_type_class_unref (g_type_class_peek (gst_assoc_flags_get_type ()));
1089 g_type_class_unref (g_type_class_peek (gst_index_resolver_method_get_type
1091 g_type_class_unref (g_type_class_peek (gst_index_flags_get_type ()));
1092 g_type_class_unref (g_type_class_peek (gst_debug_level_get_type ()));
1093 g_type_class_unref (g_type_class_peek (gst_debug_color_flags_get_type ()));
1094 g_type_class_unref (g_type_class_peek (gst_iterator_result_get_type ()));
1095 g_type_class_unref (g_type_class_peek (gst_iterator_item_get_type ()));
1096 g_type_class_unref (g_type_class_peek (gst_message_type_get_type ()));
1097 g_type_class_unref (g_type_class_peek (gst_mini_object_flags_get_type ()));
1098 g_type_class_unref (g_type_class_peek (gst_pad_link_return_get_type ()));
1099 g_type_class_unref (g_type_class_peek (gst_pad_link_check_get_type ()));
1100 g_type_class_unref (g_type_class_peek (gst_flow_return_get_type ()));
1101 g_type_class_unref (g_type_class_peek (gst_activate_mode_get_type ()));
1102 g_type_class_unref (g_type_class_peek (gst_pad_direction_get_type ()));
1103 g_type_class_unref (g_type_class_peek (gst_pad_flags_get_type ()));
1104 g_type_class_unref (g_type_class_peek (gst_pad_presence_get_type ()));
1105 g_type_class_unref (g_type_class_peek (gst_pad_template_flags_get_type ()));
1106 g_type_class_unref (g_type_class_peek (gst_pipeline_flags_get_type ()));
1107 g_type_class_unref (g_type_class_peek (gst_plugin_error_get_type ()));
1108 g_type_class_unref (g_type_class_peek (gst_plugin_flags_get_type ()));
1109 g_type_class_unref (g_type_class_peek (gst_rank_get_type ()));
1110 g_type_class_unref (g_type_class_peek (gst_query_type_get_type ()));
1111 g_type_class_unref (g_type_class_peek (gst_buffering_mode_get_type ()));
1112 g_type_class_unref (g_type_class_peek (gst_tag_merge_mode_get_type ()));
1113 g_type_class_unref (g_type_class_peek (gst_tag_flag_get_type ()));
1114 g_type_class_unref (g_type_class_peek (gst_task_state_get_type ()));
1115 g_type_class_unref (g_type_class_peek (gst_alloc_trace_flags_get_type ()));
1116 g_type_class_unref (g_type_class_peek (gst_type_find_probability_get_type
1118 g_type_class_unref (g_type_class_peek (gst_uri_type_get_type ()));
1119 g_type_class_unref (g_type_class_peek (gst_parse_error_get_type ()));
1120 g_type_class_unref (g_type_class_peek (gst_param_spec_fraction_get_type ()));
1122 gst_deinitialized = TRUE;
1123 GST_INFO ("deinitialized GStreamer");
1128 * @major: pointer to a guint to store the major version number
1129 * @minor: pointer to a guint to store the minor version number
1130 * @micro: pointer to a guint to store the micro version number
1131 * @nano: pointer to a guint to store the nano version number
1133 * Gets the version number of the GStreamer library.
1136 gst_version (guint * major, guint * minor, guint * micro, guint * nano)
1138 g_return_if_fail (major);
1139 g_return_if_fail (minor);
1140 g_return_if_fail (micro);
1141 g_return_if_fail (nano);
1143 *major = GST_VERSION_MAJOR;
1144 *minor = GST_VERSION_MINOR;
1145 *micro = GST_VERSION_MICRO;
1146 *nano = GST_VERSION_NANO;
1150 * gst_version_string:
1152 * This function returns a string that is useful for describing this version
1153 * of GStreamer to the outside world: user agent strings, logging, ...
1155 * Returns: a newly allocated string describing this version of GStreamer.
1159 gst_version_string (void)
1161 guint major, minor, micro, nano;
1163 gst_version (&major, &minor, µ, &nano);
1165 return g_strdup_printf ("GStreamer %d.%d.%d", major, minor, micro);
1167 return g_strdup_printf ("GStreamer %d.%d.%d (GIT)", major, minor, micro);
1169 return g_strdup_printf ("GStreamer %d.%d.%d (prerelease)", major, minor,
1174 * gst_segtrap_is_enabled:
1176 * Some functions in the GStreamer core might install a custom SIGSEGV handler
1177 * to better catch and report errors to the application. Currently this feature
1178 * is enabled by default when loading plugins.
1180 * Applications might want to disable this behaviour with the
1181 * gst_segtrap_set_enabled() function. This is typically done if the application
1182 * wants to install its own handler without GStreamer interfering.
1184 * Returns: %TRUE if GStreamer is allowed to install a custom SIGSEGV handler.
1189 gst_segtrap_is_enabled (void)
1191 /* yeps, it's enabled when it's not disabled */
1192 return !_gst_disable_segtrap;
1196 * gst_segtrap_set_enabled:
1197 * @enabled: whether a custom SIGSEGV handler should be installed.
1199 * Applications might want to disable/enable the SIGSEGV handling of
1200 * the GStreamer core. See gst_segtrap_is_enabled() for more information.
1205 gst_segtrap_set_enabled (gboolean enabled)
1207 _gst_disable_segtrap = !enabled;