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, GstDebugLevel * level)
228 if (str[0] != NUL && str[1] == NUL
229 && str[0] >= '0' && str[0] < '0' + GST_LEVEL_COUNT) {
230 *level = (GstDebugLevel) (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: (skip)
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: (transfer full): 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 group = g_option_group_new ("gst", _("GStreamer Options"),
364 _("Show GStreamer Options"), NULL, NULL);
365 g_option_group_set_parse_hooks (group, (GOptionParseFunc) init_pre,
366 (GOptionParseFunc) init_post);
368 g_option_group_add_entries (group, gst_args);
369 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
379 * @argc: (inout) (allow-none): pointer to application's argc
380 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
381 * @err: pointer to a #GError to which a message will be posted on error
383 * Initializes the GStreamer library, setting up internal path lists,
384 * registering built-in elements, and loading standard plugins.
386 * This function will return %FALSE if GStreamer could not be initialized
387 * for some reason. If you want your program to fail fatally,
388 * use gst_init() instead.
390 * This function should be called before calling any other GLib functions. If
391 * this is not an option, your program must initialise the GLib thread system
392 * using g_thread_init() before any other GLib functions are called.
394 * Returns: %TRUE if GStreamer could be initialized.
397 gst_init_check (int *argc, char **argv[], GError ** err)
399 #ifndef GST_DISABLE_OPTION_PARSING
405 if (gst_initialized) {
406 GST_DEBUG ("already initialized gst");
409 #ifndef GST_DISABLE_OPTION_PARSING
410 ctx = g_option_context_new ("- GStreamer initialization");
411 g_option_context_set_ignore_unknown_options (ctx, TRUE);
412 group = gst_init_get_option_group ();
413 g_option_context_add_group (ctx, group);
414 res = g_option_context_parse (ctx, argc, argv, err);
415 g_option_context_free (ctx);
417 init_pre (NULL, NULL, NULL, NULL);
418 init_post (NULL, NULL, NULL, NULL);
422 gst_initialized = res;
425 GST_INFO ("initialized GStreamer successfully");
427 GST_INFO ("failed to initialize GStreamer");
435 * @argc: (inout) (allow-none): pointer to application's argc
436 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
438 * Initializes the GStreamer library, setting up internal path lists,
439 * registering built-in elements, and loading standard plugins.
441 * Unless the plugin registry is disabled at compile time, the registry will be
442 * loaded. By default this will also check if the registry cache needs to be
443 * updated and rescan all plugins if needed. See gst_update_registry() for
444 * details and section
445 * <link linkend="gst-running">Running GStreamer Applications</link>
446 * for how to disable automatic registry updates.
448 * This function should be called before calling any other GLib functions. If
449 * this is not an option, your program must initialise the GLib thread system
450 * using g_thread_init() before any other GLib functions are called.
453 * This function will terminate your program if it was unable to initialize
454 * GStreamer for some reason. If you want your program to fall back,
455 * use gst_init_check() instead.
458 * WARNING: This function does not work in the same way as corresponding
459 * functions in other glib-style libraries, such as gtk_init(). In
460 * particular, unknown command line options cause this function to
461 * abort program execution.
464 gst_init (int *argc, char **argv[])
468 if (!gst_init_check (argc, argv, &err)) {
469 g_print ("Could not initialize GStreamer: %s\n",
470 err ? err->message : "unknown error occurred");
479 * gst_is_initialized:
481 * Use this function to check if GStreamer has been initialized with gst_init()
482 * or gst_init_check().
484 * Returns: TRUE if initialization has been done, FALSE otherwise.
489 gst_is_initialized (void)
491 return gst_initialized;
494 #ifndef GST_DISABLE_REGISTRY
496 add_path_func (gpointer data, gpointer user_data)
498 GST_INFO ("Adding plugin path: \"%s\", will scan later", (gchar *) data);
499 _priv_gst_plugin_paths =
500 g_list_append (_priv_gst_plugin_paths, g_strdup (data));
504 #ifndef GST_DISABLE_OPTION_PARSING
506 prepare_for_load_plugin_func (gpointer data, gpointer user_data)
508 _priv_gst_preload_plugins =
509 g_slist_prepend (_priv_gst_preload_plugins, g_strdup (data));
513 #ifndef GST_DISABLE_OPTION_PARSING
515 split_and_iterate (const gchar * stringlist, const gchar * separator,
516 GFunc iterator, gpointer user_data)
520 gchar *lastlist = g_strdup (stringlist);
523 strings = g_strsplit (lastlist, separator, MAX_PATH_SPLIT);
528 iterator (strings[j], user_data);
529 if (++j == MAX_PATH_SPLIT) {
530 lastlist = g_strdup (strings[j]);
535 g_strfreev (strings);
540 /* we have no fail cases yet, but maybe in the future */
542 init_pre (GOptionContext * context, GOptionGroup * group, gpointer data,
545 if (gst_initialized) {
546 GST_DEBUG ("already initialized");
552 #ifndef GST_DISABLE_GST_DEBUG
553 _priv_gst_debug_init ();
557 setlocale (LC_ALL, "");
558 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
559 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
560 #endif /* ENABLE_NLS */
562 #ifndef GST_DISABLE_GST_DEBUG
564 const gchar *debug_list;
566 if (g_getenv ("GST_DEBUG_NO_COLOR") != NULL)
567 gst_debug_set_colored (FALSE);
569 debug_list = g_getenv ("GST_DEBUG");
571 parse_debug_list (debug_list);
575 priv_gst_dump_dot_dir = g_getenv ("GST_DEBUG_DUMP_DOT_DIR");
577 /* This is the earliest we can make stuff show up in the logs.
578 * So give some useful info about GStreamer here */
579 GST_INFO ("Initializing GStreamer Core Library version %s", VERSION);
580 GST_INFO ("Using library installed in %s", LIBDIR);
582 /* Print some basic system details if possible (OS/architecture) */
583 #ifdef HAVE_SYS_UTSNAME_H
585 struct utsname sys_details;
587 if (uname (&sys_details) == 0) {
588 GST_INFO ("%s %s %s %s %s", sys_details.sysname,
589 sys_details.nodename, sys_details.release, sys_details.version,
590 sys_details.machine);
599 gst_register_core_elements (GstPlugin * plugin)
601 /* register some standard builtin types */
602 if (!gst_element_register (plugin, "bin", GST_RANK_PRIMARY,
604 !gst_element_register (plugin, "pipeline", GST_RANK_PRIMARY,
607 g_assert_not_reached ();
614 * - initalization of threads if we use them
617 * - initializes gst_format
618 * - registers a bunch of types for gst_objects
620 * - we don't have cases yet where this fails, but in the future
621 * we might and then it's nice to be able to return that
624 init_post (GOptionContext * context, GOptionGroup * group, gpointer data,
629 #ifndef GST_DISABLE_TRACE
631 #endif /* GST_DISABLE_TRACE */
633 if (gst_initialized) {
634 GST_DEBUG ("already initialized");
638 llf = G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL;
639 g_log_set_handler (g_log_domain_gstreamer, llf, debug_log_handler, NULL);
641 _priv_gst_quarks_initialize ();
642 _priv_gst_memory_initialize ();
643 _priv_gst_format_initialize ();
644 _priv_gst_query_initialize ();
645 _priv_gst_structure_initialize ();
646 _priv_gst_caps_initialize ();
647 _priv_gst_meta_initialize ();
649 g_mutex_init (&_gst_trace_mutex);
651 g_type_class_ref (gst_object_get_type ());
652 g_type_class_ref (gst_pad_get_type ());
653 g_type_class_ref (gst_element_factory_get_type ());
654 g_type_class_ref (gst_element_get_type ());
655 g_type_class_ref (gst_type_find_factory_get_type ());
656 g_type_class_ref (gst_bin_get_type ());
657 g_type_class_ref (gst_bus_get_type ());
658 g_type_class_ref (gst_task_get_type ());
659 g_type_class_ref (gst_clock_get_type ());
661 gst_uri_handler_get_type ();
663 g_type_class_ref (gst_object_flags_get_type ());
664 g_type_class_ref (gst_bin_flags_get_type ());
665 g_type_class_ref (gst_buffer_flags_get_type ());
666 g_type_class_ref (gst_buffer_copy_flags_get_type ());
667 g_type_class_ref (gst_bus_flags_get_type ());
668 g_type_class_ref (gst_bus_sync_reply_get_type ());
669 g_type_class_ref (gst_caps_flags_get_type ());
670 g_type_class_ref (gst_clock_return_get_type ());
671 g_type_class_ref (gst_clock_entry_type_get_type ());
672 g_type_class_ref (gst_clock_flags_get_type ());
673 g_type_class_ref (gst_clock_type_get_type ());
674 g_type_class_ref (gst_debug_graph_details_get_type ());
675 g_type_class_ref (gst_state_get_type ());
676 g_type_class_ref (gst_state_change_return_get_type ());
677 g_type_class_ref (gst_state_change_get_type ());
678 g_type_class_ref (gst_element_flags_get_type ());
679 g_type_class_ref (gst_core_error_get_type ());
680 g_type_class_ref (gst_library_error_get_type ());
681 g_type_class_ref (gst_resource_error_get_type ());
682 g_type_class_ref (gst_stream_error_get_type ());
683 g_type_class_ref (gst_event_type_flags_get_type ());
684 g_type_class_ref (gst_event_type_get_type ());
685 g_type_class_ref (gst_seek_type_get_type ());
686 g_type_class_ref (gst_seek_flags_get_type ());
687 g_type_class_ref (gst_qos_type_get_type ());
688 g_type_class_ref (gst_format_get_type ());
689 g_type_class_ref (gst_debug_level_get_type ());
690 g_type_class_ref (gst_debug_color_flags_get_type ());
691 g_type_class_ref (gst_iterator_result_get_type ());
692 g_type_class_ref (gst_iterator_item_get_type ());
693 g_type_class_ref (gst_message_type_get_type ());
694 g_type_class_ref (gst_mini_object_flags_get_type ());
695 g_type_class_ref (gst_pad_link_return_get_type ());
696 g_type_class_ref (gst_pad_link_check_get_type ());
697 g_type_class_ref (gst_flow_return_get_type ());
698 g_type_class_ref (gst_pad_mode_get_type ());
699 g_type_class_ref (gst_pad_direction_get_type ());
700 g_type_class_ref (gst_pad_flags_get_type ());
701 g_type_class_ref (gst_pad_presence_get_type ());
702 g_type_class_ref (gst_pad_template_flags_get_type ());
703 g_type_class_ref (gst_pipeline_flags_get_type ());
704 g_type_class_ref (gst_plugin_error_get_type ());
705 g_type_class_ref (gst_plugin_flags_get_type ());
706 g_type_class_ref (gst_plugin_dependency_flags_get_type ());
707 g_type_class_ref (gst_rank_get_type ());
708 g_type_class_ref (gst_query_type_get_type ());
709 g_type_class_ref (gst_buffering_mode_get_type ());
710 g_type_class_ref (gst_stream_status_type_get_type ());
711 g_type_class_ref (gst_structure_change_type_get_type ());
712 g_type_class_ref (gst_tag_merge_mode_get_type ());
713 g_type_class_ref (gst_tag_flag_get_type ());
714 g_type_class_ref (gst_task_pool_get_type ());
715 g_type_class_ref (gst_task_state_get_type ());
716 g_type_class_ref (gst_alloc_trace_flags_get_type ());
717 g_type_class_ref (gst_type_find_probability_get_type ());
718 g_type_class_ref (gst_uri_error_get_type ());
719 g_type_class_ref (gst_uri_type_get_type ());
720 g_type_class_ref (gst_parse_error_get_type ());
721 g_type_class_ref (gst_parse_flags_get_type ());
722 g_type_class_ref (gst_search_mode_get_type ());
723 g_type_class_ref (gst_progress_type_get_type ());
724 g_type_class_ref (gst_buffer_pool_flags_get_type ());
725 g_type_class_ref (gst_memory_flags_get_type ());
726 g_type_class_ref (gst_map_flags_get_type ());
727 g_type_class_ref (gst_caps_intersect_mode_get_type ());
728 g_type_class_ref (gst_pad_probe_type_get_type ());
729 g_type_class_ref (gst_pad_probe_return_get_type ());
730 g_type_class_ref (gst_segment_flags_get_type ());
731 g_type_class_ref (gst_scheduling_flags_get_type ());
732 g_type_class_ref (gst_meta_flags_get_type ());
734 g_type_class_ref (gst_control_binding_get_type ());
735 g_type_class_ref (gst_control_source_get_type ());
737 _priv_gst_event_initialize ();
738 _priv_gst_buffer_initialize ();
739 _priv_gst_message_initialize ();
740 _priv_gst_buffer_list_initialize ();
741 _priv_gst_sample_initialize ();
742 _priv_gst_value_initialize ();
743 g_type_class_ref (gst_param_spec_fraction_get_type ());
744 _priv_gst_tag_initialize ();
745 gst_parse_context_get_type ();
747 _priv_gst_plugin_initialize ();
749 /* register core plugins */
750 gst_plugin_register_static (GST_VERSION_MAJOR, GST_VERSION_MINOR,
751 "staticelements", "core elements linked into the GStreamer library",
752 gst_register_core_elements, VERSION, GST_LICENSE, PACKAGE,
753 GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
756 * Any errors happening below this point are non-fatal, we therefore mark
757 * gstreamer as being initialized, since it is the case from a plugin point of
760 * If anything fails, it will be put back to FALSE in gst_init_check().
761 * This allows some special plugins that would call gst_init() to not cause a
762 * looping effect (i.e. initializing GStreamer twice).
764 gst_initialized = TRUE;
766 if (!gst_update_registry ())
769 #ifndef GST_DISABLE_TRACE
772 gst_trace = gst_trace_new ("gst.trace", 1024);
773 gst_trace_set_default (gst_trace);
775 #endif /* GST_DISABLE_TRACE */
777 GST_INFO ("GLib runtime version: %d.%d.%d", glib_major_version,
778 glib_minor_version, glib_micro_version);
779 GST_INFO ("GLib headers version: %d.%d.%d", GLIB_MAJOR_VERSION,
780 GLIB_MINOR_VERSION, GLIB_MICRO_VERSION);
785 #ifndef GST_DISABLE_GST_DEBUG
787 select_all (GstPlugin * plugin, gpointer user_data)
793 sort_by_category_name (gconstpointer a, gconstpointer b)
795 return strcmp (gst_debug_category_get_name ((GstDebugCategory *) a),
796 gst_debug_category_get_name ((GstDebugCategory *) b));
800 gst_debug_help (void)
805 /* Need to ensure the registry is loaded to get debug categories */
806 if (!init_post (NULL, NULL, NULL, NULL))
809 list2 = gst_registry_plugin_filter (gst_registry_get (),
810 select_all, FALSE, NULL);
812 /* FIXME this is gross. why don't debug have categories PluginFeatures? */
813 for (g = list2; g; g = g_list_next (g)) {
814 GstPlugin *plugin = GST_PLUGIN_CAST (g->data);
816 gst_plugin_load (plugin);
820 list = gst_debug_get_all_categories ();
821 walk = list = g_slist_sort (list, sort_by_category_name);
824 g_print ("name level description\n");
825 g_print ("---------------------+--------+--------------------------------\n");
828 GstDebugCategory *cat = (GstDebugCategory *) walk->data;
830 if (gst_debug_is_colored ()) {
832 gint color = gst_debug_construct_win_color (cat->color);
833 const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
835 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
836 g_print ("%-20s", gst_debug_category_get_name (cat));
837 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
838 g_print (" %1d %s ", gst_debug_category_get_threshold (cat),
839 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)));
840 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
841 g_print ("%s", gst_debug_category_get_description (cat));
842 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
844 #else /* G_OS_WIN32 */
845 gchar *color = gst_debug_construct_term_color (cat->color);
847 g_print ("%s%-20s\033[00m %1d %s %s%s\033[00m\n",
849 gst_debug_category_get_name (cat),
850 gst_debug_category_get_threshold (cat),
851 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
852 color, gst_debug_category_get_description (cat));
854 #endif /* G_OS_WIN32 */
856 g_print ("%-20s %1d %s %s\n", gst_debug_category_get_name (cat),
857 gst_debug_category_get_threshold (cat),
858 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
859 gst_debug_category_get_description (cat));
861 walk = g_slist_next (walk);
868 #ifndef GST_DISABLE_OPTION_PARSING
870 parse_one_option (gint opt, const gchar * arg, GError ** err)
874 g_print ("GStreamer Core Library version %s\n", PACKAGE_VERSION);
876 case ARG_FATAL_WARNINGS:{
877 GLogLevelFlags fatal_mask;
879 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
880 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
881 g_log_set_always_fatal (fatal_mask);
884 #ifndef GST_DISABLE_GST_DEBUG
885 case ARG_DEBUG_LEVEL:{
886 GstDebugLevel tmp = GST_LEVEL_NONE;
888 tmp = (GstDebugLevel) strtol (arg, NULL, 0);
889 if (tmp >= 0 && tmp < GST_LEVEL_COUNT) {
890 gst_debug_set_default_threshold (tmp);
895 parse_debug_list (arg);
897 case ARG_DEBUG_NO_COLOR:
898 gst_debug_set_colored (FALSE);
900 case ARG_DEBUG_DISABLE:
901 gst_debug_set_active (FALSE);
907 case ARG_PLUGIN_SPEW:
909 case ARG_PLUGIN_PATH:
910 #ifndef GST_DISABLE_REGISTRY
911 split_and_iterate (arg, G_SEARCHPATH_SEPARATOR_S, add_path_func, NULL);
912 #endif /* GST_DISABLE_REGISTRY */
914 case ARG_PLUGIN_LOAD:
915 split_and_iterate (arg, ",", prepare_for_load_plugin_func, NULL);
917 case ARG_SEGTRAP_DISABLE:
918 _gst_disable_segtrap = TRUE;
920 case ARG_REGISTRY_UPDATE_DISABLE:
921 #ifndef GST_DISABLE_REGISTRY
922 _priv_gst_disable_registry_update = TRUE;
925 case ARG_REGISTRY_FORK_DISABLE:
926 gst_registry_fork_set_enabled (FALSE);
929 g_set_error (err, G_OPTION_ERROR, G_OPTION_ERROR_UNKNOWN_OPTION,
930 _("Unknown option"));
938 parse_goption_arg (const gchar * opt,
939 const gchar * arg, gpointer data, GError ** err)
947 "--gst-version", ARG_VERSION}, {
948 "--gst-fatal-warnings", ARG_FATAL_WARNINGS},
949 #ifndef GST_DISABLE_GST_DEBUG
951 "--gst-debug-level", ARG_DEBUG_LEVEL}, {
952 "--gst-debug", ARG_DEBUG}, {
953 "--gst-debug-disable", ARG_DEBUG_DISABLE}, {
954 "--gst-debug-no-color", ARG_DEBUG_NO_COLOR}, {
955 "--gst-debug-help", ARG_DEBUG_HELP},
958 "--gst-plugin-spew", ARG_PLUGIN_SPEW}, {
959 "--gst-plugin-path", ARG_PLUGIN_PATH}, {
960 "--gst-plugin-load", ARG_PLUGIN_LOAD}, {
961 "--gst-disable-segtrap", ARG_SEGTRAP_DISABLE}, {
962 "--gst-disable-registry-update", ARG_REGISTRY_UPDATE_DISABLE}, {
963 "--gst-disable-registry-fork", ARG_REGISTRY_FORK_DISABLE}, {
968 for (n = 0; options[n].opt; n++) {
969 if (!strcmp (opt, options[n].opt)) {
970 val = options[n].val;
975 return parse_one_option (val, arg, err);
982 * Clean up any resources created by GStreamer in gst_init().
984 * It is normally not needed to call this function in a normal application
985 * as the resources will automatically be freed when the program terminates.
986 * This function is therefore mostly used by testsuites and other memory
989 * After this call GStreamer (including this method) should not be used anymore.
996 GST_INFO ("deinitializing GStreamer");
998 if (gst_deinitialized) {
999 GST_DEBUG ("already deinitialized");
1003 g_slist_foreach (_priv_gst_preload_plugins, (GFunc) g_free, NULL);
1004 g_slist_free (_priv_gst_preload_plugins);
1005 _priv_gst_preload_plugins = NULL;
1007 #ifndef GST_DISABLE_REGISTRY
1008 g_list_foreach (_priv_gst_plugin_paths, (GFunc) g_free, NULL);
1009 g_list_free (_priv_gst_plugin_paths);
1010 _priv_gst_plugin_paths = NULL;
1013 clock = gst_system_clock_obtain ();
1014 gst_object_unref (clock);
1015 gst_object_unref (clock);
1017 _priv_gst_registry_cleanup ();
1019 g_mutex_clear (&_gst_trace_mutex);
1021 g_type_class_unref (g_type_class_peek (gst_object_get_type ()));
1022 g_type_class_unref (g_type_class_peek (gst_pad_get_type ()));
1023 g_type_class_unref (g_type_class_peek (gst_element_factory_get_type ()));
1024 g_type_class_unref (g_type_class_peek (gst_element_get_type ()));
1025 g_type_class_unref (g_type_class_peek (gst_type_find_factory_get_type ()));
1026 g_type_class_unref (g_type_class_peek (gst_bin_get_type ()));
1027 g_type_class_unref (g_type_class_peek (gst_bus_get_type ()));
1028 g_type_class_unref (g_type_class_peek (gst_task_get_type ()));
1029 g_type_class_unref (g_type_class_peek (gst_object_flags_get_type ()));
1030 g_type_class_unref (g_type_class_peek (gst_bin_flags_get_type ()));
1031 g_type_class_unref (g_type_class_peek (gst_buffer_flags_get_type ()));
1032 g_type_class_unref (g_type_class_peek (gst_buffer_copy_flags_get_type ()));
1033 g_type_class_unref (g_type_class_peek (gst_bus_flags_get_type ()));
1034 g_type_class_unref (g_type_class_peek (gst_bus_sync_reply_get_type ()));
1035 g_type_class_unref (g_type_class_peek (gst_caps_flags_get_type ()));
1036 g_type_class_unref (g_type_class_peek (gst_clock_type_get_type ()));
1037 g_type_class_unref (g_type_class_peek (gst_clock_return_get_type ()));
1038 g_type_class_unref (g_type_class_peek (gst_clock_entry_type_get_type ()));
1039 g_type_class_unref (g_type_class_peek (gst_clock_flags_get_type ()));
1040 g_type_class_unref (g_type_class_peek (gst_debug_graph_details_get_type ()));
1041 g_type_class_unref (g_type_class_peek (gst_state_get_type ()));
1042 g_type_class_unref (g_type_class_peek (gst_state_change_return_get_type ()));
1043 g_type_class_unref (g_type_class_peek (gst_state_change_get_type ()));
1044 g_type_class_unref (g_type_class_peek (gst_element_flags_get_type ()));
1045 g_type_class_unref (g_type_class_peek (gst_core_error_get_type ()));
1046 g_type_class_unref (g_type_class_peek (gst_library_error_get_type ()));
1047 g_type_class_unref (g_type_class_peek (gst_plugin_dependency_flags_get_type
1049 g_type_class_unref (g_type_class_peek (gst_parse_flags_get_type ()));
1050 g_type_class_unref (g_type_class_peek (gst_resource_error_get_type ()));
1051 g_type_class_unref (g_type_class_peek (gst_search_mode_get_type ()));
1052 g_type_class_unref (g_type_class_peek (gst_stream_error_get_type ()));
1053 g_type_class_unref (g_type_class_peek (gst_stream_status_type_get_type ()));
1054 g_type_class_unref (g_type_class_peek (gst_structure_change_type_get_type
1056 g_type_class_unref (g_type_class_peek (gst_event_type_flags_get_type ()));
1057 g_type_class_unref (g_type_class_peek (gst_event_type_get_type ()));
1058 g_type_class_unref (g_type_class_peek (gst_seek_type_get_type ()));
1059 g_type_class_unref (g_type_class_peek (gst_seek_flags_get_type ()));
1060 g_type_class_unref (g_type_class_peek (gst_qos_type_get_type ()));
1061 g_type_class_unref (g_type_class_peek (gst_format_get_type ()));
1062 g_type_class_unref (g_type_class_peek (gst_debug_level_get_type ()));
1063 g_type_class_unref (g_type_class_peek (gst_debug_color_flags_get_type ()));
1064 g_type_class_unref (g_type_class_peek (gst_iterator_result_get_type ()));
1065 g_type_class_unref (g_type_class_peek (gst_iterator_item_get_type ()));
1066 g_type_class_unref (g_type_class_peek (gst_message_type_get_type ()));
1067 g_type_class_unref (g_type_class_peek (gst_meta_flags_get_type ()));
1068 g_type_class_unref (g_type_class_peek (gst_mini_object_flags_get_type ()));
1069 g_type_class_unref (g_type_class_peek (gst_pad_link_return_get_type ()));
1070 g_type_class_unref (g_type_class_peek (gst_pad_link_check_get_type ()));
1071 g_type_class_unref (g_type_class_peek (gst_flow_return_get_type ()));
1072 g_type_class_unref (g_type_class_peek (gst_pad_mode_get_type ()));
1073 g_type_class_unref (g_type_class_peek (gst_pad_direction_get_type ()));
1074 g_type_class_unref (g_type_class_peek (gst_pad_flags_get_type ()));
1075 g_type_class_unref (g_type_class_peek (gst_pad_presence_get_type ()));
1076 g_type_class_unref (g_type_class_peek (gst_pad_template_flags_get_type ()));
1077 g_type_class_unref (g_type_class_peek (gst_pipeline_flags_get_type ()));
1078 g_type_class_unref (g_type_class_peek (gst_plugin_error_get_type ()));
1079 g_type_class_unref (g_type_class_peek (gst_plugin_flags_get_type ()));
1080 g_type_class_unref (g_type_class_peek (gst_rank_get_type ()));
1081 g_type_class_unref (g_type_class_peek (gst_query_type_get_type ()));
1082 g_type_class_unref (g_type_class_peek (gst_buffering_mode_get_type ()));
1083 g_type_class_unref (g_type_class_peek (gst_tag_merge_mode_get_type ()));
1084 g_type_class_unref (g_type_class_peek (gst_tag_flag_get_type ()));
1085 g_type_class_unref (g_type_class_peek (gst_task_state_get_type ()));
1086 g_type_class_unref (g_type_class_peek (gst_alloc_trace_flags_get_type ()));
1087 g_type_class_unref (g_type_class_peek (gst_type_find_probability_get_type
1089 g_type_class_unref (g_type_class_peek (gst_uri_type_get_type ()));
1090 g_type_class_unref (g_type_class_peek (gst_uri_error_get_type ()));
1091 g_type_class_unref (g_type_class_peek (gst_parse_error_get_type ()));
1092 g_type_class_unref (g_type_class_peek (gst_param_spec_fraction_get_type ()));
1093 g_type_class_unref (g_type_class_peek (gst_progress_type_get_type ()));
1094 g_type_class_unref (g_type_class_peek (gst_buffer_pool_flags_get_type ()));
1095 g_type_class_unref (g_type_class_peek (gst_memory_flags_get_type ()));
1096 g_type_class_unref (g_type_class_peek (gst_map_flags_get_type ()));
1097 g_type_class_unref (g_type_class_peek (gst_caps_intersect_mode_get_type ()));
1098 g_type_class_unref (g_type_class_peek (gst_pad_probe_type_get_type ()));
1099 g_type_class_unref (g_type_class_peek (gst_pad_probe_return_get_type ()));
1100 g_type_class_unref (g_type_class_peek (gst_segment_flags_get_type ()));
1101 g_type_class_unref (g_type_class_peek (gst_scheduling_flags_get_type ()));
1103 g_type_class_unref (g_type_class_peek (gst_control_binding_get_type ()));
1104 g_type_class_unref (g_type_class_peek (gst_control_source_get_type ()));
1106 gst_deinitialized = TRUE;
1107 GST_INFO ("deinitialized GStreamer");
1112 * @major: (out): pointer to a guint to store the major version number
1113 * @minor: (out): pointer to a guint to store the minor version number
1114 * @micro: (out): pointer to a guint to store the micro version number
1115 * @nano: (out): pointer to a guint to store the nano version number
1117 * Gets the version number of the GStreamer library.
1120 gst_version (guint * major, guint * minor, guint * micro, guint * nano)
1122 g_return_if_fail (major);
1123 g_return_if_fail (minor);
1124 g_return_if_fail (micro);
1125 g_return_if_fail (nano);
1127 *major = GST_VERSION_MAJOR;
1128 *minor = GST_VERSION_MINOR;
1129 *micro = GST_VERSION_MICRO;
1130 *nano = GST_VERSION_NANO;
1134 * gst_version_string:
1136 * This function returns a string that is useful for describing this version
1137 * of GStreamer to the outside world: user agent strings, logging, ...
1139 * Returns: (transfer full): a newly allocated string describing this version
1144 gst_version_string (void)
1146 guint major, minor, micro, nano;
1148 gst_version (&major, &minor, µ, &nano);
1150 return g_strdup_printf ("GStreamer %d.%d.%d", major, minor, micro);
1152 return g_strdup_printf ("GStreamer %d.%d.%d (GIT)", major, minor, micro);
1154 return g_strdup_printf ("GStreamer %d.%d.%d (prerelease)", major, minor,
1159 * gst_segtrap_is_enabled:
1161 * Some functions in the GStreamer core might install a custom SIGSEGV handler
1162 * to better catch and report errors to the application. Currently this feature
1163 * is enabled by default when loading plugins.
1165 * Applications might want to disable this behaviour with the
1166 * gst_segtrap_set_enabled() function. This is typically done if the application
1167 * wants to install its own handler without GStreamer interfering.
1169 * Returns: %TRUE if GStreamer is allowed to install a custom SIGSEGV handler.
1174 gst_segtrap_is_enabled (void)
1176 /* yeps, it's enabled when it's not disabled */
1177 return !_gst_disable_segtrap;
1181 * gst_segtrap_set_enabled:
1182 * @enabled: whether a custom SIGSEGV handler should be installed.
1184 * Applications might want to disable/enable the SIGSEGV handling of
1185 * the GStreamer core. See gst_segtrap_is_enabled() for more information.
1190 gst_segtrap_set_enabled (gboolean enabled)
1192 _gst_disable_segtrap = !enabled;