1 /* GStreamer
2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
4 *
5 * gst.c: Initialization and non-pipeline operations
6 *
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.
11 *
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.
16 *
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.
21 */
22
23 /**
24 * SECTION:gst
25 * @title: GStreamer
26 * @short_description: Media library supporting arbitrary formats and filter
27 * graphs.
28 *
29 * GStreamer is a framework for constructing graphs of various filters
30 * (termed elements here) that will handle streaming media. Any discrete
31 * (packetizable) media type is supported, with provisions for automatically
32 * determining source type. Formatting/framing information is provided with
33 * a powerful negotiation framework. Plugins are heavily used to provide for
34 * all elements, allowing one to construct plugins outside of the GST
35 * library, even released binary-only if license require (please don't).
36 * GStreamer covers a wide range of use cases including: playback, recording,
37 * editing, serving streams, voice over ip and video calls.
38 *
39 * The <application>GStreamer</application> library should be initialized with
40 * gst_init() before it can be used. You should pass pointers to the main argc
41 * and argv variables so that GStreamer can process its own command line
42 * options, as shown in the following example.
43 *
44 * ## Initializing the gstreamer library
45 *
46 * |[ <!-- language="C" -->
47 * int
48 * main (int argc, char *argv[])
49 * {
50 * // initialize the GStreamer library
51 * gst_init (&argc, &argv);
52 * ...
53 * }
54 * ]|
55 *
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.
58 *
59 * You can also use GOption to initialize your own parameters as shown in
60 * the next code fragment:
61 *
62 * ## Initializing own parameters when initializing gstreamer
63 * |[ <!-- language="C" -->
64 * static gboolean stats = FALSE;
65 * ...
66 * int
67 * main (int argc, char *argv[])
68 * {
69 * GOptionEntry options[] = {
70 * {"tags", 't', 0, G_OPTION_ARG_NONE, &tags,
71 * N_("Output tags (also known as metadata)"), NULL},
72 * {NULL}
73 * };
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));
79 * exit (1);
80 * }
81 * g_option_context_free (ctx);
82 * ...
83 * }
84 * ]|
85 *
86 * Use gst_version() to query the library version at runtime or use the
87 * GST_VERSION_* macros to find the version at compile time. Optionally
88 * gst_version_string() returns a printable string.
89 *
90 * The gst_deinit() call is used to clean up all internal resources used
91 * by GStreamer. It is mostly used in unit tests to check for leaks.
92 */
93
94 #include "gst_private.h"
95 #include "gstconfig.h"
96 #include <stdlib.h>
97 #include <stdio.h>
98 #include <sys/types.h>
99 #ifdef HAVE_SYS_UTSNAME_H
100 #include <sys/utsname.h>
101 #endif
102 #ifdef HAVE_UNISTD_H
103 #include <unistd.h>
104 #endif
105 #ifdef G_OS_WIN32
106 #define WIN32_LEAN_AND_MEAN /* prevents from including too many things */
107 #include <windows.h> /* GetStdHandle, windows console */
108 #endif
109 #if defined (__APPLE__)
110 #include "TargetConditionals.h"
111 #if !TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR && !TARGET_OS_EMBEDDED
112 #include <libproc.h> /* proc_pidpath, PROC_PIDPATHINFO_MAXSIZE */
113 #endif
114 #endif
115
116 #include "gst-i18n-lib.h"
117 #include <locale.h> /* for LC_ALL */
118
119 #include "gst.h"
120
121 #define GST_CAT_DEFAULT GST_CAT_GST_INIT
122
123 #define MAX_PATH_SPLIT 16
124 #define GST_PLUGIN_SEPARATOR ","
125
126 static gboolean gst_initialized = FALSE;
127 static gboolean gst_deinitialized = FALSE;
128
129 GstClockTime _priv_gst_start_time;
130
131 #ifdef G_OS_WIN32
132 HMODULE _priv_gst_dll_handle = NULL;
133 #endif
134
135 #ifndef GST_DISABLE_REGISTRY
136 GList *_priv_gst_plugin_paths = NULL; /* for delayed processing in init_post */
137
138 extern gboolean _priv_gst_disable_registry;
139 extern gboolean _priv_gst_disable_registry_update;
140 #endif
141
142 gchar *_gst_executable_path = NULL;
143
144 #ifndef GST_DISABLE_GST_DEBUG
145 const gchar *priv_gst_dump_dot_dir;
146 #endif
147
148 /* defaults */
149
150 /* set to TRUE when segfaults need to be left as is */
151 static gboolean _gst_disable_segtrap = FALSE;
152
153 static gboolean init_pre (GOptionContext * context, GOptionGroup * group,
154 gpointer data, GError ** error);
155 static gboolean init_post (GOptionContext * context, GOptionGroup * group,
156 gpointer data, GError ** error);
157 #ifndef GST_DISABLE_OPTION_PARSING
158 static gboolean parse_goption_arg (const gchar * s_opt,
159 const gchar * arg, gpointer data, GError ** err);
160 #endif
161
162 GSList *_priv_gst_preload_plugins = NULL;
163
164 const gchar g_log_domain_gstreamer[] = "GStreamer";
165
166 static void
debug_log_handler(const gchar * log_domain,GLogLevelFlags log_level,const gchar * message,gpointer user_data)167 debug_log_handler (const gchar * log_domain,
168 GLogLevelFlags log_level, const gchar * message, gpointer user_data)
169 {
170 g_log_default_handler (log_domain, log_level, message, user_data);
171 /* FIXME: do we still need this ? fatal errors these days are all
172 * other than core errors */
173 /* g_on_error_query (NULL); */
174 }
175
176 enum
177 {
178 ARG_VERSION = 1,
179 ARG_FATAL_WARNINGS,
180 #ifndef GST_DISABLE_GST_DEBUG
181 ARG_DEBUG_LEVEL,
182 ARG_DEBUG,
183 ARG_DEBUG_DISABLE,
184 ARG_DEBUG_NO_COLOR,
185 ARG_DEBUG_COLOR_MODE,
186 ARG_DEBUG_HELP,
187 #endif
188 ARG_PLUGIN_SPEW,
189 ARG_PLUGIN_PATH,
190 ARG_PLUGIN_LOAD,
191 ARG_SEGTRAP_DISABLE,
192 ARG_REGISTRY_UPDATE_DISABLE,
193 ARG_REGISTRY_FORK_DISABLE
194 };
195
196 /* debug-spec ::= category-spec [, category-spec]*
197 * category-spec ::= category:val | val
198 * category ::= [^:]+
199 * val ::= [0-5]
200 */
201
202 #ifdef G_OS_WIN32
203 /* Note: DllMain is only called when DLLs are loaded or unloaded, so this will
204 * never be called if libgstreamer-1.0 is linked statically. Do not add any code
205 * here to, say, initialize variables or set things up since that will only
206 * happen for dynamically-built GStreamer.
207 *
208 * Also, ideally this should not be defined when GStreamer is built statically.
209 * i.e., it should be conditional on #ifdef DLL_EXPORT. It will be ignored, but
210 * if other libraries make the same mistake of defining it when building
211 * statically, there will be a symbol collision during linking. Fixing this
212 * requires one to build two object files: one for static linking and another
213 * for dynamic linking. */
214 BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved);
215 BOOL WINAPI
DllMain(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved)216 DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
217 {
218 if (fdwReason == DLL_PROCESS_ATTACH)
219 _priv_gst_dll_handle = (HMODULE) hinstDLL;
220 return TRUE;
221 }
222
223 #endif
224
225 /**
226 * gst_init_get_option_group: (skip)
227 *
228 * Returns a #GOptionGroup with GStreamer's argument specifications. The
229 * group is set up to use standard GOption callbacks, so when using this
230 * group in combination with GOption parsing methods, all argument parsing
231 * and initialization is automated.
232 *
233 * This function is useful if you want to integrate GStreamer with other
234 * libraries that use GOption (see g_option_context_add_group() ).
235 *
236 * If you use this function, you should make sure you initialise the GLib
237 * threading system as one of the very first things in your program
238 * (see the example at the beginning of this section).
239 *
240 * Returns: (transfer full) (nullable): a pointer to GStreamer's option group.
241 */
242
243 GOptionGroup *
gst_init_get_option_group(void)244 gst_init_get_option_group (void)
245 {
246 #ifndef GST_DISABLE_OPTION_PARSING
247 GOptionGroup *group;
248 static const GOptionEntry gst_args[] = {
249 {"gst-version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
250 (gpointer) parse_goption_arg, N_("Print the GStreamer version"), NULL},
251 {"gst-fatal-warnings", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
252 (gpointer) parse_goption_arg, N_("Make all warnings fatal"), NULL},
253 #ifndef GST_DISABLE_GST_DEBUG
254 {"gst-debug-help", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
255 (gpointer) parse_goption_arg,
256 N_("Print available debug categories and exit"),
257 NULL},
258 {"gst-debug-level", 0, 0, G_OPTION_ARG_CALLBACK,
259 (gpointer) parse_goption_arg,
260 N_("Default debug level from 1 (only error) to 9 (anything) or "
261 "0 for no output"),
262 N_("LEVEL")},
263 {"gst-debug", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg,
264 N_("Comma-separated list of category_name:level pairs to set "
265 "specific levels for the individual categories. Example: "
266 "GST_AUTOPLUG:5,GST_ELEMENT_*:3"),
267 N_("LIST")},
268 {"gst-debug-no-color", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
269 (gpointer) parse_goption_arg, N_("Disable colored debugging output"),
270 NULL},
271 {"gst-debug-color-mode", 0, 0, G_OPTION_ARG_CALLBACK,
272 (gpointer) parse_goption_arg,
273 N_("Changes coloring mode of the debug log. "
274 "Possible modes: off, on, disable, auto, unix"),
275 NULL},
276 {"gst-debug-disable", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
277 (gpointer) parse_goption_arg, N_("Disable debugging"), NULL},
278 #endif
279 {"gst-plugin-spew", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
280 (gpointer) parse_goption_arg,
281 N_("Enable verbose plugin loading diagnostics"),
282 NULL},
283 {"gst-plugin-path", 0, 0, G_OPTION_ARG_CALLBACK,
284 (gpointer) parse_goption_arg,
285 N_("Colon-separated paths containing plugins"), N_("PATHS")},
286 {"gst-plugin-load", 0, 0, G_OPTION_ARG_CALLBACK,
287 (gpointer) parse_goption_arg,
288 N_("Comma-separated list of plugins to preload in addition to the "
289 "list stored in environment variable GST_PLUGIN_PATH"),
290 N_("PLUGINS")},
291 {"gst-disable-segtrap", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
292 (gpointer) parse_goption_arg,
293 N_("Disable trapping of segmentation faults during plugin loading"),
294 NULL},
295 {"gst-disable-registry-update", 0, G_OPTION_FLAG_NO_ARG,
296 G_OPTION_ARG_CALLBACK,
297 (gpointer) parse_goption_arg,
298 N_("Disable updating the registry"),
299 NULL},
300 {"gst-disable-registry-fork", 0, G_OPTION_FLAG_NO_ARG,
301 G_OPTION_ARG_CALLBACK,
302 (gpointer) parse_goption_arg,
303 N_("Disable spawning a helper process while scanning the registry"),
304 NULL},
305 {NULL}
306 };
307
308 group = g_option_group_new ("gst", _("GStreamer Options"),
309 _("Show GStreamer Options"), NULL, NULL);
310 g_option_group_set_parse_hooks (group, (GOptionParseFunc) init_pre,
311 (GOptionParseFunc) init_post);
312
313 g_option_group_add_entries (group, gst_args);
314 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
315
316 return group;
317 #else
318 return NULL;
319 #endif
320 }
321
322 #if defined(__linux__)
323 static void
find_executable_path(void)324 find_executable_path (void)
325 {
326 GError *error = NULL;
327
328 if (_gst_executable_path)
329 return;
330
331 _gst_executable_path = g_file_read_link ("/proc/self/exe", &error);
332 if (error)
333 g_error_free (error);
334 }
335 #elif defined(G_OS_WIN32)
336 static void
find_executable_path(void)337 find_executable_path (void)
338 {
339 char buffer[MAX_PATH];
340
341 if (!GetModuleFileName (NULL, buffer, MAX_PATH))
342 return;
343
344 _gst_executable_path = g_strdup (buffer);
345 }
346 #elif defined(__APPLE__) && !TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR && !TARGET_OS_EMBEDDED
347 static void
find_executable_path(void)348 find_executable_path (void)
349 {
350 int ret;
351 pid_t pid;
352 char pathbuf[PROC_PIDPATHINFO_MAXSIZE];
353
354 pid = getpid ();
355 ret = proc_pidpath (pid, pathbuf, sizeof (pathbuf));
356 if (ret > 0)
357 _gst_executable_path = g_strdup (pathbuf);
358 }
359 #else
360 static void
find_executable_path(void)361 find_executable_path (void)
362 {
363 GST_FIXME ("Couldn't look up executable path, add support for this platform");
364 }
365 #endif
366
367 /**
368 * gst_get_main_executable_path:
369 *
370 * This helper is mostly helpful for plugins that need to
371 * inspect the folder of the main executable to determine
372 * their set of features.
373 *
374 * When a plugin is initialized from the gst-plugin-scanner
375 * external process, the returned path will be the same as from the
376 * parent process.
377 *
378 * Returns: (transfer none) (nullable): The path of the executable that
379 * initialized GStreamer, or %NULL if it could not be determined.
380 *
381 * Since: 1.14
382 */
383 const gchar *
gst_get_main_executable_path(void)384 gst_get_main_executable_path (void)
385 {
386 return _gst_executable_path;
387 }
388
389 /**
390 * gst_init_check:
391 * @argc: (inout) (allow-none): pointer to application's argc
392 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
393 * @err: pointer to a #GError to which a message will be posted on error
394 *
395 * Initializes the GStreamer library, setting up internal path lists,
396 * registering built-in elements, and loading standard plugins.
397 *
398 * This function will return %FALSE if GStreamer could not be initialized
399 * for some reason. If you want your program to fail fatally,
400 * use gst_init() instead.
401 *
402 * Returns: %TRUE if GStreamer could be initialized.
403 */
404 gboolean
gst_init_check(int * argc,char ** argv[],GError ** err)405 gst_init_check (int *argc, char **argv[], GError ** err)
406 {
407 static GMutex init_lock;
408 #ifndef GST_DISABLE_OPTION_PARSING
409 GOptionGroup *group;
410 GOptionContext *ctx;
411 #endif
412 gboolean res;
413
414 g_mutex_lock (&init_lock);
415
416 if (gst_initialized) {
417 GST_DEBUG ("already initialized gst");
418 g_mutex_unlock (&init_lock);
419 return TRUE;
420 }
421 #ifndef GST_DISABLE_OPTION_PARSING
422 ctx = g_option_context_new ("- GStreamer initialization");
423 g_option_context_set_ignore_unknown_options (ctx, TRUE);
424 g_option_context_set_help_enabled (ctx, FALSE);
425 group = gst_init_get_option_group ();
426 g_option_context_add_group (ctx, group);
427 res = g_option_context_parse (ctx, argc, argv, err);
428 g_option_context_free (ctx);
429 #else
430 init_pre (NULL, NULL, NULL, NULL);
431 init_post (NULL, NULL, NULL, NULL);
432 res = TRUE;
433 #endif
434
435 gst_initialized = res;
436
437 g_mutex_unlock (&init_lock);
438
439 return res;
440 }
441
442 /**
443 * gst_init:
444 * @argc: (inout) (allow-none): pointer to application's argc
445 * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv
446 *
447 * Initializes the GStreamer library, setting up internal path lists,
448 * registering built-in elements, and loading standard plugins.
449 *
450 * Unless the plugin registry is disabled at compile time, the registry will be
451 * loaded. By default this will also check if the registry cache needs to be
452 * updated and rescan all plugins if needed. See gst_update_registry() for
453 * details and section
454 * <link linkend="gst-running">Running GStreamer Applications</link>
455 * for how to disable automatic registry updates.
456 *
457 * > This function will terminate your program if it was unable to initialize
458 * > GStreamer for some reason. If you want your program to fall back,
459 * > use gst_init_check() instead.
460 *
461 * WARNING: This function does not work in the same way as corresponding
462 * functions in other glib-style libraries, such as gtk_init\(\). In
463 * particular, unknown command line options cause this function to
464 * abort program execution.
465 */
466 void
gst_init(int * argc,char ** argv[])467 gst_init (int *argc, char **argv[])
468 {
469 GError *err = NULL;
470
471 if (!gst_init_check (argc, argv, &err)) {
472 g_print ("Could not initialize GStreamer: %s\n",
473 err ? err->message : "unknown error occurred");
474 if (err) {
475 g_error_free (err);
476 }
477 exit (1);
478 }
479 }
480
481 /**
482 * gst_is_initialized:
483 *
484 * Use this function to check if GStreamer has been initialized with gst_init()
485 * or gst_init_check().
486 *
487 * Returns: %TRUE if initialization has been done, %FALSE otherwise.
488 */
489 gboolean
gst_is_initialized(void)490 gst_is_initialized (void)
491 {
492 return gst_initialized;
493 }
494
495 #ifndef GST_DISABLE_OPTION_PARSING
496 # ifndef GST_DISABLE_REGISTRY
497 static void
add_path_func(gpointer data,gpointer user_data)498 add_path_func (gpointer data, gpointer user_data)
499 {
500 GST_INFO ("Adding plugin path: \"%s\", will scan later", (gchar *) data);
501 _priv_gst_plugin_paths =
502 g_list_append (_priv_gst_plugin_paths, g_strdup (data));
503 }
504 # endif
505 #endif
506
507 #ifndef GST_DISABLE_OPTION_PARSING
508 static void
prepare_for_load_plugin_func(gpointer data,gpointer user_data)509 prepare_for_load_plugin_func (gpointer data, gpointer user_data)
510 {
511 _priv_gst_preload_plugins =
512 g_slist_prepend (_priv_gst_preload_plugins, g_strdup (data));
513 }
514 #endif
515
516 #ifndef GST_DISABLE_OPTION_PARSING
517 static void
split_and_iterate(const gchar * stringlist,const gchar * separator,GFunc iterator,gpointer user_data)518 split_and_iterate (const gchar * stringlist, const gchar * separator,
519 GFunc iterator, gpointer user_data)
520 {
521 gchar **strings;
522 gint j = 0;
523 gchar *lastlist = g_strdup (stringlist);
524
525 while (lastlist) {
526 strings = g_strsplit (lastlist, separator, MAX_PATH_SPLIT);
527 g_free (lastlist);
528 lastlist = NULL;
529
530 while (strings[j]) {
531 iterator (strings[j], user_data);
532 if (++j == MAX_PATH_SPLIT) {
533 lastlist = g_strdup (strings[j]);
534 j = 0;
535 break;
536 }
537 }
538 g_strfreev (strings);
539 }
540 }
541 #endif
542
543 /* we have no fail cases yet, but maybe in the future */
544 static gboolean
init_pre(GOptionContext * context,GOptionGroup * group,gpointer data,GError ** error)545 init_pre (GOptionContext * context, GOptionGroup * group, gpointer data,
546 GError ** error)
547 {
548 gchar *libdir;
549 if (gst_initialized) {
550 GST_DEBUG ("already initialized");
551 return TRUE;
552 }
553
554 find_executable_path ();
555
556 _priv_gst_start_time = gst_util_get_timestamp ();
557
558 #ifndef GST_DISABLE_GST_DEBUG
559 _priv_gst_debug_init ();
560 priv_gst_dump_dot_dir = g_getenv ("GST_DEBUG_DUMP_DOT_DIR");
561 #endif
562
563 #ifdef ENABLE_NLS
564 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
565 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
566 #endif /* ENABLE_NLS */
567
568 /* This is the earliest we can make stuff show up in the logs.
569 * So give some useful info about GStreamer here */
570 #ifdef G_OS_WIN32
571 {
572 gchar *basedir =
573 g_win32_get_package_installation_directory_of_module
574 (_priv_gst_dll_handle);
575
576 libdir = g_build_filename (basedir,
577 #ifdef _DEBUG
578 "debug"
579 #endif
580 "lib", NULL);
581 g_free (basedir);
582 }
583 #else
584 libdir = g_strdup (LIBDIR);
585 #endif
586 GST_INFO ("Initializing GStreamer Core Library version %s", VERSION);
587 GST_INFO ("Using library installed in %s", libdir);
588 g_free (libdir);
589
590 #ifndef GST_DISABLE_REGISTRY
591 {
592 const gchar *disable_registry;
593 if ((disable_registry = g_getenv ("GST_REGISTRY_DISABLE"))) {
594 _priv_gst_disable_registry = (strcmp (disable_registry, "yes") == 0);
595 }
596 }
597 #endif
598
599 /* Print some basic system details if possible (OS/architecture) */
600 #ifdef HAVE_SYS_UTSNAME_H
601 {
602 struct utsname sys_details;
603
604 if (uname (&sys_details) == 0) {
605 GST_INFO ("%s %s %s %s %s", sys_details.sysname,
606 sys_details.nodename, sys_details.release, sys_details.version,
607 sys_details.machine);
608 }
609 }
610 #endif
611
612 #ifndef G_ATOMIC_LOCK_FREE
613 GST_CAT_WARNING (GST_CAT_PERFORMANCE, "GLib atomic operations are NOT "
614 "implemented using real hardware atomic operations!");
615 #endif
616
617 return TRUE;
618 }
619
620 static gboolean
gst_register_core_elements(GstPlugin * plugin)621 gst_register_core_elements (GstPlugin * plugin)
622 {
623 /* register some standard builtin types */
624 if (!gst_element_register (plugin, "bin", GST_RANK_PRIMARY,
625 GST_TYPE_BIN) ||
626 !gst_element_register (plugin, "pipeline", GST_RANK_PRIMARY,
627 GST_TYPE_PIPELINE)
628 )
629 g_assert_not_reached ();
630
631 return TRUE;
632 }
633
634 /*
635 * this bit handles:
636 * - initialization of threads if we use them
637 * - log handler
638 * - initial output
639 * - initializes gst_format
640 * - registers a bunch of types for gst_objects
641 *
642 * - we don't have cases yet where this fails, but in the future
643 * we might and then it's nice to be able to return that
644 */
645 static gboolean
init_post(GOptionContext * context,GOptionGroup * group,gpointer data,GError ** error)646 init_post (GOptionContext * context, GOptionGroup * group, gpointer data,
647 GError ** error)
648 {
649 GLogLevelFlags llf;
650
651 if (gst_initialized) {
652 GST_DEBUG ("already initialized");
653 return TRUE;
654 }
655
656 llf = G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL;
657 g_log_set_handler (g_log_domain_gstreamer, llf, debug_log_handler, NULL);
658
659 _priv_gst_mini_object_initialize ();
660 _priv_gst_quarks_initialize ();
661 _priv_gst_allocator_initialize ();
662 _priv_gst_memory_initialize ();
663 _priv_gst_format_initialize ();
664 _priv_gst_query_initialize ();
665 _priv_gst_structure_initialize ();
666 _priv_gst_caps_initialize ();
667 _priv_gst_caps_features_initialize ();
668 _priv_gst_meta_initialize ();
669 _priv_gst_message_initialize ();
670
671 g_type_class_ref (gst_object_get_type ());
672 g_type_class_ref (gst_pad_get_type ());
673 g_type_class_ref (gst_element_factory_get_type ());
674 g_type_class_ref (gst_element_get_type ());
675 g_type_class_ref (gst_tracer_factory_get_type ());
676 g_type_class_ref (gst_type_find_factory_get_type ());
677 g_type_class_ref (gst_bin_get_type ());
678 g_type_class_ref (gst_bus_get_type ());
679 g_type_class_ref (gst_task_get_type ());
680 g_type_class_ref (gst_clock_get_type ());
681 g_type_class_ref (gst_debug_color_mode_get_type ());
682
683 gst_uri_handler_get_type ();
684
685 g_type_class_ref (gst_object_flags_get_type ());
686 g_type_class_ref (gst_bin_flags_get_type ());
687 g_type_class_ref (gst_buffer_flags_get_type ());
688 g_type_class_ref (gst_buffer_copy_flags_get_type ());
689 g_type_class_ref (gst_bus_flags_get_type ());
690 g_type_class_ref (gst_bus_sync_reply_get_type ());
691 g_type_class_ref (gst_caps_flags_get_type ());
692 g_type_class_ref (gst_clock_return_get_type ());
693 g_type_class_ref (gst_clock_entry_type_get_type ());
694 g_type_class_ref (gst_clock_flags_get_type ());
695 g_type_class_ref (gst_clock_type_get_type ());
696 g_type_class_ref (gst_debug_graph_details_get_type ());
697 g_type_class_ref (gst_state_get_type ());
698 g_type_class_ref (gst_state_change_return_get_type ());
699 g_type_class_ref (gst_state_change_get_type ());
700 g_type_class_ref (gst_element_flags_get_type ());
701 g_type_class_ref (gst_tracer_value_scope_get_type ());
702 g_type_class_ref (gst_tracer_value_flags_get_type ());
703 g_type_class_ref (gst_core_error_get_type ());
704 g_type_class_ref (gst_library_error_get_type ());
705 g_type_class_ref (gst_resource_error_get_type ());
706 g_type_class_ref (gst_stream_error_get_type ());
707 g_type_class_ref (gst_event_type_flags_get_type ());
708 g_type_class_ref (gst_event_type_get_type ());
709 g_type_class_ref (gst_seek_type_get_type ());
710 g_type_class_ref (gst_seek_flags_get_type ());
711 g_type_class_ref (gst_qos_type_get_type ());
712 g_type_class_ref (gst_format_get_type ());
713 g_type_class_ref (gst_debug_level_get_type ());
714 g_type_class_ref (gst_debug_color_flags_get_type ());
715 g_type_class_ref (gst_iterator_result_get_type ());
716 g_type_class_ref (gst_iterator_item_get_type ());
717 g_type_class_ref (gst_message_type_get_type ());
718 g_type_class_ref (gst_mini_object_flags_get_type ());
719 g_type_class_ref (gst_pad_link_return_get_type ());
720 g_type_class_ref (gst_pad_link_check_get_type ());
721 g_type_class_ref (gst_flow_return_get_type ());
722 g_type_class_ref (gst_pad_mode_get_type ());
723 g_type_class_ref (gst_pad_direction_get_type ());
724 g_type_class_ref (gst_pad_flags_get_type ());
725 g_type_class_ref (gst_pad_presence_get_type ());
726 g_type_class_ref (gst_pad_template_flags_get_type ());
727 g_type_class_ref (gst_pipeline_flags_get_type ());
728 g_type_class_ref (gst_plugin_error_get_type ());
729 g_type_class_ref (gst_plugin_flags_get_type ());
730 g_type_class_ref (gst_plugin_dependency_flags_get_type ());
731 g_type_class_ref (gst_rank_get_type ());
732 g_type_class_ref (gst_query_type_flags_get_type ());
733 g_type_class_ref (gst_query_type_get_type ());
734 g_type_class_ref (gst_buffering_mode_get_type ());
735 g_type_class_ref (gst_stream_status_type_get_type ());
736 g_type_class_ref (gst_structure_change_type_get_type ());
737 g_type_class_ref (gst_tag_merge_mode_get_type ());
738 g_type_class_ref (gst_tag_flag_get_type ());
739 g_type_class_ref (gst_tag_scope_get_type ());
740 g_type_class_ref (gst_task_pool_get_type ());
741 g_type_class_ref (gst_task_state_get_type ());
742 g_type_class_ref (gst_toc_entry_type_get_type ());
743 g_type_class_ref (gst_type_find_probability_get_type ());
744 g_type_class_ref (gst_uri_error_get_type ());
745 g_type_class_ref (gst_uri_type_get_type ());
746 g_type_class_ref (gst_parse_error_get_type ());
747 g_type_class_ref (gst_parse_flags_get_type ());
748 g_type_class_ref (gst_search_mode_get_type ());
749 g_type_class_ref (gst_progress_type_get_type ());
750 g_type_class_ref (gst_buffer_pool_acquire_flags_get_type ());
751 g_type_class_ref (gst_memory_flags_get_type ());
752 g_type_class_ref (gst_map_flags_get_type ());
753 g_type_class_ref (gst_caps_intersect_mode_get_type ());
754 g_type_class_ref (gst_pad_probe_type_get_type ());
755 g_type_class_ref (gst_pad_probe_return_get_type ());
756 g_type_class_ref (gst_segment_flags_get_type ());
757 g_type_class_ref (gst_scheduling_flags_get_type ());
758 g_type_class_ref (gst_meta_flags_get_type ());
759 g_type_class_ref (gst_toc_entry_type_get_type ());
760 g_type_class_ref (gst_toc_scope_get_type ());
761 g_type_class_ref (gst_toc_loop_type_get_type ());
762 g_type_class_ref (gst_control_binding_get_type ());
763 g_type_class_ref (gst_control_source_get_type ());
764 g_type_class_ref (gst_lock_flags_get_type ());
765 g_type_class_ref (gst_allocator_flags_get_type ());
766 g_type_class_ref (gst_stream_flags_get_type ());
767 g_type_class_ref (gst_stream_type_get_type ());
768 g_type_class_ref (gst_stack_trace_flags_get_type ());
769 g_type_class_ref (gst_promise_result_get_type ());
770
771 _priv_gst_event_initialize ();
772 _priv_gst_buffer_initialize ();
773 _priv_gst_buffer_list_initialize ();
774 _priv_gst_sample_initialize ();
775 _priv_gst_context_initialize ();
776 _priv_gst_date_time_initialize ();
777 _priv_gst_value_initialize ();
778 _priv_gst_tag_initialize ();
779 _priv_gst_toc_initialize ();
780
781 g_type_class_ref (gst_param_spec_fraction_get_type ());
782 gst_parse_context_get_type ();
783
784 _priv_gst_plugin_initialize ();
785
786 /* register core plugins */
787 gst_plugin_register_static (GST_VERSION_MAJOR, GST_VERSION_MINOR,
788 "staticelements", "core elements linked into the GStreamer library",
789 gst_register_core_elements, VERSION, GST_LICENSE, PACKAGE,
790 GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
791
792 /*
793 * Any errors happening below this point are non-fatal, we therefore mark
794 * gstreamer as being initialized, since it is the case from a plugin point of
795 * view.
796 *
797 * If anything fails, it will be put back to %FALSE in gst_init_check().
798 * This allows some special plugins that would call gst_init() to not cause a
799 * looping effect (i.e. initializing GStreamer twice).
800 */
801 gst_initialized = TRUE;
802
803 if (!gst_update_registry ())
804 return FALSE;
805
806 GST_INFO ("GLib runtime version: %d.%d.%d", glib_major_version,
807 glib_minor_version, glib_micro_version);
808 GST_INFO ("GLib headers version: %d.%d.%d", GLIB_MAJOR_VERSION,
809 GLIB_MINOR_VERSION, GLIB_MICRO_VERSION);
810 GST_INFO ("initialized GStreamer successfully");
811
812 #ifndef GST_DISABLE_GST_DEBUG
813 _priv_gst_tracing_init ();
814 #endif
815
816 return TRUE;
817 }
818
819 #ifndef GST_DISABLE_OPTION_PARSING
820 # ifndef GST_DISABLE_GST_DEBUG
821 static gboolean
select_all(GstPlugin * plugin,gpointer user_data)822 select_all (GstPlugin * plugin, gpointer user_data)
823 {
824 return TRUE;
825 }
826
827 static gint
sort_by_category_name(gconstpointer a,gconstpointer b)828 sort_by_category_name (gconstpointer a, gconstpointer b)
829 {
830 return strcmp (gst_debug_category_get_name ((GstDebugCategory *) a),
831 gst_debug_category_get_name ((GstDebugCategory *) b));
832 }
833
834 static void
gst_debug_help(void)835 gst_debug_help (void)
836 {
837 GSList *list, *walk;
838 GList *list2, *g;
839
840 /* Need to ensure the registry is loaded to get debug categories */
841 if (!init_post (NULL, NULL, NULL, NULL))
842 exit (1);
843
844 list2 = gst_registry_plugin_filter (gst_registry_get (),
845 select_all, FALSE, NULL);
846
847 /* FIXME this is gross. why don't debug have categories PluginFeatures? */
848 for (g = list2; g; g = g_list_next (g)) {
849 GstPlugin *plugin = GST_PLUGIN_CAST (g->data);
850 GList *features, *orig_features;
851
852 if (GST_OBJECT_FLAG_IS_SET (plugin, GST_PLUGIN_FLAG_BLACKLISTED))
853 continue;
854
855 gst_plugin_load (plugin);
856 /* Now create one of each feature so the class_init functions
857 * are called, as that's where most debug categories are
858 * registered. FIXME: If debug categories were a plugin feature,
859 * this would be unneeded */
860 orig_features = features =
861 gst_registry_get_feature_list_by_plugin (gst_registry_get (),
862 gst_plugin_get_name (plugin));
863 while (features) {
864 GstPluginFeature *feature;
865
866 if (G_UNLIKELY (features->data == NULL))
867 goto next;
868
869 feature = GST_PLUGIN_FEATURE (features->data);
870 if (GST_IS_ELEMENT_FACTORY (feature)) {
871 GstElementFactory *factory;
872 GstElement *e;
873
874 factory = GST_ELEMENT_FACTORY (feature);
875 e = gst_element_factory_create (factory, NULL);
876 if (e)
877 gst_object_unref (e);
878 }
879
880 next:
881 features = g_list_next (features);
882 }
883
884 gst_plugin_feature_list_free (orig_features);
885 }
886 g_list_free (list2);
887
888 list = gst_debug_get_all_categories ();
889 walk = list = g_slist_sort (list, sort_by_category_name);
890
891 g_print ("\n");
892 g_print ("name level description\n");
893 g_print ("---------------------+--------+--------------------------------\n");
894
895 while (walk) {
896 gboolean on_unix;
897 GstDebugCategory *cat = (GstDebugCategory *) walk->data;
898 GstDebugColorMode coloring = gst_debug_get_color_mode ();
899 #ifdef G_OS_UNIX
900 on_unix = TRUE;
901 #else
902 on_unix = FALSE;
903 #endif
904
905 if (GST_DEBUG_COLOR_MODE_UNIX == coloring
906 || (on_unix && GST_DEBUG_COLOR_MODE_ON == coloring)) {
907 gchar *color = gst_debug_construct_term_color (cat->color);
908
909 g_print ("%s%-20s\033[00m %1d %s %s%s\033[00m\n",
910 color,
911 gst_debug_category_get_name (cat),
912 gst_debug_category_get_threshold (cat),
913 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
914 color, gst_debug_category_get_description (cat));
915 g_free (color);
916 } else if (GST_DEBUG_COLOR_MODE_ON == coloring && !on_unix) {
917 #ifdef G_OS_WIN32
918 gint color = gst_debug_construct_win_color (cat->color);
919 const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
920
921 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
922 g_print ("%-20s", gst_debug_category_get_name (cat));
923 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
924 g_print (" %1d %s ", gst_debug_category_get_threshold (cat),
925 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)));
926 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color);
927 g_print ("%s", gst_debug_category_get_description (cat));
928 SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear);
929 g_print ("\n");
930 #endif /* G_OS_WIN32 */
931 } else {
932 g_print ("%-20s %1d %s %s\n", gst_debug_category_get_name (cat),
933 gst_debug_category_get_threshold (cat),
934 gst_debug_level_get_name (gst_debug_category_get_threshold (cat)),
935 gst_debug_category_get_description (cat));
936 }
937 walk = g_slist_next (walk);
938 }
939 g_slist_free (list);
940 g_print ("\n");
941 }
942 # endif /* GST_DISABLE_OPTION_PARSING */
943 #endif /* GST_DISABLE_GST_DEBUG */
944
945 #ifndef GST_DISABLE_OPTION_PARSING
946 static gboolean
parse_one_option(gint opt,const gchar * arg,GError ** err)947 parse_one_option (gint opt, const gchar * arg, GError ** err)
948 {
949 switch (opt) {
950 case ARG_VERSION:
951 g_print ("GStreamer Core Library version %s\n", PACKAGE_VERSION);
952 exit (0);
953 case ARG_FATAL_WARNINGS:{
954 GLogLevelFlags fatal_mask;
955
956 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
957 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
958 g_log_set_always_fatal (fatal_mask);
959 break;
960 }
961 #ifndef GST_DISABLE_GST_DEBUG
962 case ARG_DEBUG_LEVEL:{
963 GstDebugLevel tmp = GST_LEVEL_NONE;
964
965 tmp = (GstDebugLevel) strtol (arg, NULL, 0);
966 if (((guint) tmp) < GST_LEVEL_COUNT) {
967 gst_debug_set_default_threshold (tmp);
968 }
969 break;
970 }
971 case ARG_DEBUG:
972 gst_debug_set_threshold_from_string (arg, FALSE);
973 break;
974 case ARG_DEBUG_NO_COLOR:
975 gst_debug_set_colored (FALSE);
976 break;
977 case ARG_DEBUG_COLOR_MODE:
978 gst_debug_set_color_mode_from_string (arg);
979 break;
980 case ARG_DEBUG_DISABLE:
981 gst_debug_set_active (FALSE);
982 break;
983 case ARG_DEBUG_HELP:
984 gst_debug_help ();
985 exit (0);
986 #endif
987 case ARG_PLUGIN_SPEW:
988 break;
989 case ARG_PLUGIN_PATH:
990 #ifndef GST_DISABLE_REGISTRY
991 if (!_priv_gst_disable_registry)
992 split_and_iterate (arg, G_SEARCHPATH_SEPARATOR_S, add_path_func, NULL);
993 #endif /* GST_DISABLE_REGISTRY */
994 break;
995 case ARG_PLUGIN_LOAD:
996 split_and_iterate (arg, ",", prepare_for_load_plugin_func, NULL);
997 break;
998 case ARG_SEGTRAP_DISABLE:
999 _gst_disable_segtrap = TRUE;
1000 break;
1001 case ARG_REGISTRY_UPDATE_DISABLE:
1002 #ifndef GST_DISABLE_REGISTRY
1003 if (!_priv_gst_disable_registry)
1004 _priv_gst_disable_registry_update = TRUE;
1005 #endif
1006 break;
1007 case ARG_REGISTRY_FORK_DISABLE:
1008 gst_registry_fork_set_enabled (FALSE);
1009 break;
1010 default:
1011 g_set_error (err, G_OPTION_ERROR, G_OPTION_ERROR_UNKNOWN_OPTION,
1012 _("Unknown option"));
1013 return FALSE;
1014 }
1015
1016 return TRUE;
1017 }
1018
1019 static gboolean
parse_goption_arg(const gchar * opt,const gchar * arg,gpointer data,GError ** err)1020 parse_goption_arg (const gchar * opt,
1021 const gchar * arg, gpointer data, GError ** err)
1022 {
1023 static const struct
1024 {
1025 const gchar *opt;
1026 int val;
1027 } options[] = {
1028 {
1029 "--gst-version", ARG_VERSION}, {
1030 "--gst-fatal-warnings", ARG_FATAL_WARNINGS},
1031 #ifndef GST_DISABLE_GST_DEBUG
1032 {
1033 "--gst-debug-level", ARG_DEBUG_LEVEL}, {
1034 "--gst-debug", ARG_DEBUG}, {
1035 "--gst-debug-disable", ARG_DEBUG_DISABLE}, {
1036 "--gst-debug-no-color", ARG_DEBUG_NO_COLOR}, {
1037 "--gst-debug-color-mode", ARG_DEBUG_COLOR_MODE}, {
1038 "--gst-debug-help", ARG_DEBUG_HELP},
1039 #endif
1040 {
1041 "--gst-plugin-spew", ARG_PLUGIN_SPEW}, {
1042 "--gst-plugin-path", ARG_PLUGIN_PATH}, {
1043 "--gst-plugin-load", ARG_PLUGIN_LOAD}, {
1044 "--gst-disable-segtrap", ARG_SEGTRAP_DISABLE}, {
1045 "--gst-disable-registry-update", ARG_REGISTRY_UPDATE_DISABLE}, {
1046 "--gst-disable-registry-fork", ARG_REGISTRY_FORK_DISABLE}, {
1047 NULL}
1048 };
1049 gint val = 0, n;
1050
1051 for (n = 0; options[n].opt; n++) {
1052 if (!strcmp (opt, options[n].opt)) {
1053 val = options[n].val;
1054 break;
1055 }
1056 }
1057
1058 return parse_one_option (val, arg, err);
1059 }
1060 #endif
1061
1062 /**
1063 * gst_deinit:
1064 *
1065 * Clean up any resources created by GStreamer in gst_init().
1066 *
1067 * It is normally not needed to call this function in a normal application
1068 * as the resources will automatically be freed when the program terminates.
1069 * This function is therefore mostly used by testsuites and other memory
1070 * profiling tools.
1071 *
1072 * After this call GStreamer (including this method) should not be used anymore.
1073 */
1074 void
gst_deinit(void)1075 gst_deinit (void)
1076 {
1077 GstBinClass *bin_class;
1078 GstClock *clock;
1079
1080 if (!gst_initialized)
1081 return;
1082
1083 GST_INFO ("deinitializing GStreamer");
1084
1085 if (gst_deinitialized) {
1086 GST_DEBUG ("already deinitialized");
1087 return;
1088 }
1089 g_thread_pool_set_max_unused_threads (0);
1090 bin_class = (GstBinClass *) g_type_class_peek (gst_bin_get_type ());
1091 if (bin_class && bin_class->pool != NULL) {
1092 g_thread_pool_free (bin_class->pool, FALSE, TRUE);
1093 bin_class->pool = NULL;
1094 }
1095 gst_task_cleanup_all ();
1096
1097 g_slist_foreach (_priv_gst_preload_plugins, (GFunc) g_free, NULL);
1098 g_slist_free (_priv_gst_preload_plugins);
1099 _priv_gst_preload_plugins = NULL;
1100
1101 #ifndef GST_DISABLE_REGISTRY
1102 g_list_foreach (_priv_gst_plugin_paths, (GFunc) g_free, NULL);
1103 g_list_free (_priv_gst_plugin_paths);
1104 _priv_gst_plugin_paths = NULL;
1105 #endif
1106
1107 if (_gst_executable_path) {
1108 g_free (_gst_executable_path);
1109 _gst_executable_path = NULL;
1110 }
1111
1112 clock = gst_system_clock_obtain ();
1113 gst_object_unref (clock);
1114 gst_object_unref (clock);
1115
1116 _priv_gst_registry_cleanup ();
1117 _priv_gst_allocator_cleanup ();
1118
1119 /* We want to destroy tracers as late as possible for the leaks tracer
1120 * but still need to keep the caps system alive as it may have to use
1121 * gst_caps_to_string() to display leaked caps. */
1122 #ifndef GST_DISABLE_GST_DEBUG
1123 _priv_gst_tracing_deinit ();
1124 #endif
1125
1126 _priv_gst_caps_features_cleanup ();
1127 _priv_gst_caps_cleanup ();
1128 _priv_gst_debug_cleanup ();
1129
1130 g_type_class_unref (g_type_class_peek (gst_object_get_type ()));
1131 g_type_class_unref (g_type_class_peek (gst_pad_get_type ()));
1132 g_type_class_unref (g_type_class_peek (gst_element_factory_get_type ()));
1133 g_type_class_unref (g_type_class_peek (gst_element_get_type ()));
1134 g_type_class_unref (g_type_class_peek (gst_tracer_factory_get_type ()));
1135 g_type_class_unref (g_type_class_peek (gst_type_find_factory_get_type ()));
1136 g_type_class_unref (g_type_class_peek (gst_bin_get_type ()));
1137 g_type_class_unref (g_type_class_peek (gst_bus_get_type ()));
1138 g_type_class_unref (g_type_class_peek (gst_task_get_type ()));
1139 g_type_class_unref (g_type_class_peek (gst_object_flags_get_type ()));
1140 g_type_class_unref (g_type_class_peek (gst_bin_flags_get_type ()));
1141 g_type_class_unref (g_type_class_peek (gst_buffer_flags_get_type ()));
1142 g_type_class_unref (g_type_class_peek (gst_buffer_copy_flags_get_type ()));
1143 g_type_class_unref (g_type_class_peek (gst_bus_flags_get_type ()));
1144 g_type_class_unref (g_type_class_peek (gst_bus_sync_reply_get_type ()));
1145 g_type_class_unref (g_type_class_peek (gst_caps_flags_get_type ()));
1146 g_type_class_unref (g_type_class_peek (gst_clock_type_get_type ()));
1147 g_type_class_unref (g_type_class_peek (gst_clock_return_get_type ()));
1148 g_type_class_unref (g_type_class_peek (gst_clock_entry_type_get_type ()));
1149 g_type_class_unref (g_type_class_peek (gst_clock_flags_get_type ()));
1150 g_type_class_unref (g_type_class_peek (gst_debug_graph_details_get_type ()));
1151 g_type_class_unref (g_type_class_peek (gst_state_get_type ()));
1152 g_type_class_unref (g_type_class_peek (gst_state_change_return_get_type ()));
1153 g_type_class_unref (g_type_class_peek (gst_state_change_get_type ()));
1154 g_type_class_unref (g_type_class_peek (gst_element_flags_get_type ()));
1155 g_type_class_unref (g_type_class_peek (gst_tracer_value_scope_get_type ()));
1156 g_type_class_unref (g_type_class_peek (gst_tracer_value_flags_get_type ()));
1157 g_type_class_unref (g_type_class_peek (gst_core_error_get_type ()));
1158 g_type_class_unref (g_type_class_peek (gst_library_error_get_type ()));
1159 g_type_class_unref (g_type_class_peek (gst_plugin_dependency_flags_get_type
1160 ()));
1161 g_type_class_unref (g_type_class_peek (gst_parse_flags_get_type ()));
1162 g_type_class_unref (g_type_class_peek (gst_resource_error_get_type ()));
1163 g_type_class_unref (g_type_class_peek (gst_search_mode_get_type ()));
1164 g_type_class_unref (g_type_class_peek (gst_stream_error_get_type ()));
1165 g_type_class_unref (g_type_class_peek (gst_stream_status_type_get_type ()));
1166 g_type_class_unref (g_type_class_peek (gst_structure_change_type_get_type
1167 ()));
1168 g_type_class_unref (g_type_class_peek (gst_event_type_flags_get_type ()));
1169 g_type_class_unref (g_type_class_peek (gst_event_type_get_type ()));
1170 g_type_class_unref (g_type_class_peek (gst_seek_type_get_type ()));
1171 g_type_class_unref (g_type_class_peek (gst_seek_flags_get_type ()));
1172 g_type_class_unref (g_type_class_peek (gst_qos_type_get_type ()));
1173 g_type_class_unref (g_type_class_peek (gst_format_get_type ()));
1174 g_type_class_unref (g_type_class_peek (gst_debug_level_get_type ()));
1175 g_type_class_unref (g_type_class_peek (gst_debug_color_flags_get_type ()));
1176 g_type_class_unref (g_type_class_peek (gst_iterator_result_get_type ()));
1177 g_type_class_unref (g_type_class_peek (gst_iterator_item_get_type ()));
1178 g_type_class_unref (g_type_class_peek (gst_message_type_get_type ()));
1179 g_type_class_unref (g_type_class_peek (gst_meta_flags_get_type ()));
1180 g_type_class_unref (g_type_class_peek (gst_mini_object_flags_get_type ()));
1181 g_type_class_unref (g_type_class_peek (gst_pad_link_return_get_type ()));
1182 g_type_class_unref (g_type_class_peek (gst_pad_link_check_get_type ()));
1183 g_type_class_unref (g_type_class_peek (gst_flow_return_get_type ()));
1184 g_type_class_unref (g_type_class_peek (gst_pad_mode_get_type ()));
1185 g_type_class_unref (g_type_class_peek (gst_pad_direction_get_type ()));
1186 g_type_class_unref (g_type_class_peek (gst_pad_flags_get_type ()));
1187 g_type_class_unref (g_type_class_peek (gst_pad_presence_get_type ()));
1188 g_type_class_unref (g_type_class_peek (gst_pad_template_flags_get_type ()));
1189 g_type_class_unref (g_type_class_peek (gst_pipeline_flags_get_type ()));
1190 g_type_class_unref (g_type_class_peek (gst_plugin_error_get_type ()));
1191 g_type_class_unref (g_type_class_peek (gst_plugin_flags_get_type ()));
1192 g_type_class_unref (g_type_class_peek (gst_rank_get_type ()));
1193 g_type_class_unref (g_type_class_peek (gst_query_type_flags_get_type ()));
1194 g_type_class_unref (g_type_class_peek (gst_query_type_get_type ()));
1195 g_type_class_unref (g_type_class_peek (gst_buffering_mode_get_type ()));
1196 g_type_class_unref (g_type_class_peek (gst_tag_merge_mode_get_type ()));
1197 g_type_class_unref (g_type_class_peek (gst_tag_flag_get_type ()));
1198 g_type_class_unref (g_type_class_peek (gst_tag_scope_get_type ()));
1199 g_type_class_unref (g_type_class_peek (gst_task_state_get_type ()));
1200 g_type_class_unref (g_type_class_peek (gst_toc_entry_type_get_type ()));
1201 g_type_class_unref (g_type_class_peek (gst_toc_scope_get_type ()));
1202 g_type_class_unref (g_type_class_peek (gst_type_find_probability_get_type
1203 ()));
1204 g_type_class_unref (g_type_class_peek (gst_uri_type_get_type ()));
1205 g_type_class_unref (g_type_class_peek (gst_uri_error_get_type ()));
1206 g_type_class_unref (g_type_class_peek (gst_parse_error_get_type ()));
1207 g_type_class_unref (g_type_class_peek (gst_param_spec_fraction_get_type ()));
1208 g_type_class_unref (g_type_class_peek (gst_progress_type_get_type ()));
1209 g_type_class_unref (g_type_class_peek (gst_buffer_pool_acquire_flags_get_type
1210 ()));
1211 g_type_class_unref (g_type_class_peek (gst_memory_flags_get_type ()));
1212 g_type_class_unref (g_type_class_peek (gst_map_flags_get_type ()));
1213 g_type_class_unref (g_type_class_peek (gst_caps_intersect_mode_get_type ()));
1214 g_type_class_unref (g_type_class_peek (gst_pad_probe_type_get_type ()));
1215 g_type_class_unref (g_type_class_peek (gst_pad_probe_return_get_type ()));
1216 g_type_class_unref (g_type_class_peek (gst_segment_flags_get_type ()));
1217 g_type_class_unref (g_type_class_peek (gst_scheduling_flags_get_type ()));
1218 g_type_class_unref (g_type_class_peek (gst_stream_type_get_type ()));
1219
1220 g_type_class_unref (g_type_class_peek (gst_control_binding_get_type ()));
1221 g_type_class_unref (g_type_class_peek (gst_control_source_get_type ()));
1222 g_type_class_unref (g_type_class_peek (gst_toc_entry_type_get_type ()));
1223 g_type_class_unref (g_type_class_peek (gst_toc_loop_type_get_type ()));
1224 g_type_class_unref (g_type_class_peek (gst_lock_flags_get_type ()));
1225 g_type_class_unref (g_type_class_peek (gst_allocator_flags_get_type ()));
1226 g_type_class_unref (g_type_class_peek (gst_stream_flags_get_type ()));
1227 g_type_class_unref (g_type_class_peek (gst_debug_color_mode_get_type ()));
1228 g_type_class_unref (g_type_class_peek (gst_stack_trace_flags_get_type ()));
1229 g_type_class_unref (g_type_class_peek (gst_promise_result_get_type ()));
1230
1231 gst_deinitialized = TRUE;
1232 GST_INFO ("deinitialized GStreamer");
1233 }
1234
1235 /**
1236 * gst_version:
1237 * @major: (out): pointer to a guint to store the major version number
1238 * @minor: (out): pointer to a guint to store the minor version number
1239 * @micro: (out): pointer to a guint to store the micro version number
1240 * @nano: (out): pointer to a guint to store the nano version number
1241 *
1242 * Gets the version number of the GStreamer library.
1243 */
1244 void
gst_version(guint * major,guint * minor,guint * micro,guint * nano)1245 gst_version (guint * major, guint * minor, guint * micro, guint * nano)
1246 {
1247 g_return_if_fail (major);
1248 g_return_if_fail (minor);
1249 g_return_if_fail (micro);
1250 g_return_if_fail (nano);
1251
1252 *major = GST_VERSION_MAJOR;
1253 *minor = GST_VERSION_MINOR;
1254 *micro = GST_VERSION_MICRO;
1255 *nano = GST_VERSION_NANO;
1256 }
1257
1258 /**
1259 * gst_version_string:
1260 *
1261 * This function returns a string that is useful for describing this version
1262 * of GStreamer to the outside world: user agent strings, logging, ...
1263 *
1264 * Returns: (transfer full): a newly allocated string describing this version
1265 * of GStreamer.
1266 */
1267
1268 gchar *
gst_version_string(void)1269 gst_version_string (void)
1270 {
1271 guint major, minor, micro, nano;
1272
1273 gst_version (&major, &minor, µ, &nano);
1274 if (nano == 0)
1275 return g_strdup_printf ("GStreamer %d.%d.%d", major, minor, micro);
1276 else if (nano == 1)
1277 return g_strdup_printf ("GStreamer %d.%d.%d (GIT)", major, minor, micro);
1278 else
1279 return g_strdup_printf ("GStreamer %d.%d.%d (prerelease)", major, minor,
1280 micro);
1281 }
1282
1283 /**
1284 * gst_segtrap_is_enabled:
1285 *
1286 * Some functions in the GStreamer core might install a custom SIGSEGV handler
1287 * to better catch and report errors to the application. Currently this feature
1288 * is enabled by default when loading plugins.
1289 *
1290 * Applications might want to disable this behaviour with the
1291 * gst_segtrap_set_enabled() function. This is typically done if the application
1292 * wants to install its own handler without GStreamer interfering.
1293 *
1294 * Returns: %TRUE if GStreamer is allowed to install a custom SIGSEGV handler.
1295 */
1296 gboolean
gst_segtrap_is_enabled(void)1297 gst_segtrap_is_enabled (void)
1298 {
1299 /* yeps, it's enabled when it's not disabled */
1300 return !_gst_disable_segtrap;
1301 }
1302
1303 /**
1304 * gst_segtrap_set_enabled:
1305 * @enabled: whether a custom SIGSEGV handler should be installed.
1306 *
1307 * Applications might want to disable/enable the SIGSEGV handling of
1308 * the GStreamer core. See gst_segtrap_is_enabled() for more information.
1309 */
1310 void
gst_segtrap_set_enabled(gboolean enabled)1311 gst_segtrap_set_enabled (gboolean enabled)
1312 {
1313 _gst_disable_segtrap = !enabled;
1314 }
1315