/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> * 2000 Wim Taymans <wtay@chello.be> * * gst.c: Initialization and non-pipeline operations * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION:gst * @title: GStreamer * @short_description: Media library supporting arbitrary formats and filter * graphs. * * GStreamer is a framework for constructing graphs of various filters * (termed elements here) that will handle streaming media. Any discrete * (packetizable) media type is supported, with provisions for automatically * determining source type. Formatting/framing information is provided with * a powerful negotiation framework. Plugins are heavily used to provide for * all elements, allowing one to construct plugins outside of the GST * library, even released binary-only if license require (please don't). * GStreamer covers a wide range of use cases including: playback, recording, * editing, serving streams, voice over ip and video calls. * * The <application>GStreamer</application> library should be initialized with * gst_init() before it can be used. You should pass pointers to the main argc * and argv variables so that GStreamer can process its own command line * options, as shown in the following example. * * ## Initializing the gstreamer library * * |[ <!-- language="C" --> * int * main (int argc, char *argv[]) * { * // initialize the GStreamer library * gst_init (&argc, &argv); * ... * } * ]| * * It's allowed to pass two %NULL pointers to gst_init() in case you don't want * to pass the command line args to GStreamer. * * You can also use GOption to initialize your own parameters as shown in * the next code fragment: * * ## Initializing own parameters when initializing gstreamer * |[ <!-- language="C" --> * static gboolean stats = FALSE; * ... * int * main (int argc, char *argv[]) * { * GOptionEntry options[] = { * {"tags", 't', 0, G_OPTION_ARG_NONE, &tags, * N_("Output tags (also known as metadata)"), NULL}, * {NULL} * }; * ctx = g_option_context_new ("[ADDITIONAL ARGUMENTS]"); * g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE); * g_option_context_add_group (ctx, gst_init_get_option_group ()); * if (!g_option_context_parse (ctx, &argc, &argv, &err)) { * g_print ("Error initializing: %s\n", GST_STR_NULL (err->message)); * exit (1); * } * g_option_context_free (ctx); * ... * } * ]| * * Use gst_version() to query the library version at runtime or use the * GST_VERSION_* macros to find the version at compile time. Optionally * gst_version_string() returns a printable string. * * The gst_deinit() call is used to clean up all internal resources used * by GStreamer. It is mostly used in unit tests to check for leaks. */ #include "gst_private.h" #include "gstconfig.h" #include <stdlib.h> #include <stdio.h> #include <sys/types.h> #ifdef HAVE_SYS_UTSNAME_H #include <sys/utsname.h> #endif #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #ifdef G_OS_WIN32 #define WIN32_LEAN_AND_MEAN /* prevents from including too many things */ #include <windows.h> /* GetStdHandle, windows console */ #endif #if defined (__APPLE__) #include "TargetConditionals.h" #if !TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR && !TARGET_OS_EMBEDDED #include <libproc.h> /* proc_pidpath, PROC_PIDPATHINFO_MAXSIZE */ #endif #endif #include "gst-i18n-lib.h" #include <locale.h> /* for LC_ALL */ #include "gst.h" #define GST_CAT_DEFAULT GST_CAT_GST_INIT #define MAX_PATH_SPLIT 16 #define GST_PLUGIN_SEPARATOR "," static gboolean gst_initialized = FALSE; static gboolean gst_deinitialized = FALSE; GstClockTime _priv_gst_start_time; #ifdef G_OS_WIN32 HMODULE _priv_gst_dll_handle = NULL; #endif #ifndef GST_DISABLE_REGISTRY GList *_priv_gst_plugin_paths = NULL; /* for delayed processing in init_post */ extern gboolean _priv_gst_disable_registry; extern gboolean _priv_gst_disable_registry_update; #endif gchar *_gst_executable_path = NULL; #ifndef GST_DISABLE_GST_DEBUG const gchar *priv_gst_dump_dot_dir; #endif /* defaults */ /* set to TRUE when segfaults need to be left as is */ static gboolean _gst_disable_segtrap = FALSE; static gboolean init_pre (GOptionContext * context, GOptionGroup * group, gpointer data, GError ** error); static gboolean init_post (GOptionContext * context, GOptionGroup * group, gpointer data, GError ** error); #ifndef GST_DISABLE_OPTION_PARSING static gboolean parse_goption_arg (const gchar * s_opt, const gchar * arg, gpointer data, GError ** err); #endif GSList *_priv_gst_preload_plugins = NULL; const gchar g_log_domain_gstreamer[] = "GStreamer"; static void debug_log_handler (const gchar * log_domain, GLogLevelFlags log_level, const gchar * message, gpointer user_data) { g_log_default_handler (log_domain, log_level, message, user_data); /* FIXME: do we still need this ? fatal errors these days are all * other than core errors */ /* g_on_error_query (NULL); */ } enum { ARG_VERSION = 1, ARG_FATAL_WARNINGS, #ifndef GST_DISABLE_GST_DEBUG ARG_DEBUG_LEVEL, ARG_DEBUG, ARG_DEBUG_DISABLE, ARG_DEBUG_NO_COLOR, ARG_DEBUG_COLOR_MODE, ARG_DEBUG_HELP, #endif ARG_PLUGIN_SPEW, ARG_PLUGIN_PATH, ARG_PLUGIN_LOAD, ARG_SEGTRAP_DISABLE, ARG_REGISTRY_UPDATE_DISABLE, ARG_REGISTRY_FORK_DISABLE }; /* debug-spec ::= category-spec [, category-spec]* * category-spec ::= category:val | val * category ::= [^:]+ * val ::= [0-5] */ #ifdef G_OS_WIN32 /* Note: DllMain is only called when DLLs are loaded or unloaded, so this will * never be called if libgstreamer-1.0 is linked statically. Do not add any code * here to, say, initialize variables or set things up since that will only * happen for dynamically-built GStreamer. * * Also, ideally this should not be defined when GStreamer is built statically. * i.e., it should be conditional on #ifdef DLL_EXPORT. It will be ignored, but * if other libraries make the same mistake of defining it when building * statically, there will be a symbol collision during linking. Fixing this * requires one to build two object files: one for static linking and another * for dynamic linking. */ BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved); BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { if (fdwReason == DLL_PROCESS_ATTACH) _priv_gst_dll_handle = (HMODULE) hinstDLL; return TRUE; } #endif /** * gst_init_get_option_group: (skip) * * Returns a #GOptionGroup with GStreamer's argument specifications. The * group is set up to use standard GOption callbacks, so when using this * group in combination with GOption parsing methods, all argument parsing * and initialization is automated. * * This function is useful if you want to integrate GStreamer with other * libraries that use GOption (see g_option_context_add_group() ). * * If you use this function, you should make sure you initialise the GLib * threading system as one of the very first things in your program * (see the example at the beginning of this section). * * Returns: (transfer full) (nullable): a pointer to GStreamer's option group. */ GOptionGroup * gst_init_get_option_group (void) { #ifndef GST_DISABLE_OPTION_PARSING GOptionGroup *group; static const GOptionEntry gst_args[] = { {"gst-version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Print the GStreamer version"), NULL}, {"gst-fatal-warnings", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Make all warnings fatal"), NULL}, #ifndef GST_DISABLE_GST_DEBUG {"gst-debug-help", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Print available debug categories and exit"), NULL}, {"gst-debug-level", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Default debug level from 1 (only error) to 9 (anything) or " "0 for no output"), N_("LEVEL")}, {"gst-debug", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Comma-separated list of category_name:level pairs to set " "specific levels for the individual categories. Example: " "GST_AUTOPLUG:5,GST_ELEMENT_*:3"), N_("LIST")}, {"gst-debug-no-color", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Disable colored debugging output"), NULL}, {"gst-debug-color-mode", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Changes coloring mode of the debug log. " "Possible modes: off, on, disable, auto, unix"), NULL}, {"gst-debug-disable", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Disable debugging"), NULL}, #endif {"gst-plugin-spew", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Enable verbose plugin loading diagnostics"), NULL}, {"gst-plugin-path", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Colon-separated paths containing plugins"), N_("PATHS")}, {"gst-plugin-load", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Comma-separated list of plugins to preload in addition to the " "list stored in environment variable GST_PLUGIN_PATH"), N_("PLUGINS")}, {"gst-disable-segtrap", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Disable trapping of segmentation faults during plugin loading"), NULL}, {"gst-disable-registry-update", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Disable updating the registry"), NULL}, {"gst-disable-registry-fork", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) parse_goption_arg, N_("Disable spawning a helper process while scanning the registry"), NULL}, {NULL} }; group = g_option_group_new ("gst", _("GStreamer Options"), _("Show GStreamer Options"), NULL, NULL); g_option_group_set_parse_hooks (group, (GOptionParseFunc) init_pre, (GOptionParseFunc) init_post); g_option_group_add_entries (group, gst_args); g_option_group_set_translation_domain (group, GETTEXT_PACKAGE); return group; #else return NULL; #endif } #if defined(__linux__) static void find_executable_path (void) { GError *error = NULL; if (_gst_executable_path) return; _gst_executable_path = g_file_read_link ("/proc/self/exe", &error); if (error) g_error_free (error); } #elif defined(G_OS_WIN32) static void find_executable_path (void) { char buffer[MAX_PATH]; if (!GetModuleFileName (NULL, buffer, MAX_PATH)) return; _gst_executable_path = g_strdup (buffer); } #elif defined(__APPLE__) && !TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR && !TARGET_OS_EMBEDDED static void find_executable_path (void) { int ret; pid_t pid; char pathbuf[PROC_PIDPATHINFO_MAXSIZE]; pid = getpid (); ret = proc_pidpath (pid, pathbuf, sizeof (pathbuf)); if (ret > 0) _gst_executable_path = g_strdup (pathbuf); } #else static void find_executable_path (void) { GST_FIXME ("Couldn't look up executable path, add support for this platform"); } #endif /** * gst_get_main_executable_path: * * This helper is mostly helpful for plugins that need to * inspect the folder of the main executable to determine * their set of features. * * When a plugin is initialized from the gst-plugin-scanner * external process, the returned path will be the same as from the * parent process. * * Returns: (transfer none) (nullable): The path of the executable that * initialized GStreamer, or %NULL if it could not be determined. * * Since: 1.14 */ const gchar * gst_get_main_executable_path (void) { return _gst_executable_path; } /** * gst_init_check: * @argc: (inout) (allow-none): pointer to application's argc * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv * @err: pointer to a #GError to which a message will be posted on error * * Initializes the GStreamer library, setting up internal path lists, * registering built-in elements, and loading standard plugins. * * This function will return %FALSE if GStreamer could not be initialized * for some reason. If you want your program to fail fatally, * use gst_init() instead. * * Returns: %TRUE if GStreamer could be initialized. */ gboolean gst_init_check (int *argc, char **argv[], GError ** err) { static GMutex init_lock; #ifndef GST_DISABLE_OPTION_PARSING GOptionGroup *group; GOptionContext *ctx; #endif gboolean res; g_mutex_lock (&init_lock); if (gst_initialized) { GST_DEBUG ("already initialized gst"); g_mutex_unlock (&init_lock); return TRUE; } #ifndef GST_DISABLE_OPTION_PARSING ctx = g_option_context_new ("- GStreamer initialization"); g_option_context_set_ignore_unknown_options (ctx, TRUE); g_option_context_set_help_enabled (ctx, FALSE); group = gst_init_get_option_group (); g_option_context_add_group (ctx, group); res = g_option_context_parse (ctx, argc, argv, err); g_option_context_free (ctx); #else init_pre (NULL, NULL, NULL, NULL); init_post (NULL, NULL, NULL, NULL); res = TRUE; #endif gst_initialized = res; g_mutex_unlock (&init_lock); return res; } /** * gst_init: * @argc: (inout) (allow-none): pointer to application's argc * @argv: (inout) (array length=argc) (allow-none): pointer to application's argv * * Initializes the GStreamer library, setting up internal path lists, * registering built-in elements, and loading standard plugins. * * Unless the plugin registry is disabled at compile time, the registry will be * loaded. By default this will also check if the registry cache needs to be * updated and rescan all plugins if needed. See gst_update_registry() for * details and section * <link linkend="gst-running">Running GStreamer Applications</link> * for how to disable automatic registry updates. * * > This function will terminate your program if it was unable to initialize * > GStreamer for some reason. If you want your program to fall back, * > use gst_init_check() instead. * * WARNING: This function does not work in the same way as corresponding * functions in other glib-style libraries, such as gtk_init\(\). In * particular, unknown command line options cause this function to * abort program execution. */ void gst_init (int *argc, char **argv[]) { GError *err = NULL; if (!gst_init_check (argc, argv, &err)) { g_print ("Could not initialize GStreamer: %s\n", err ? err->message : "unknown error occurred"); if (err) { g_error_free (err); } exit (1); } } /** * gst_is_initialized: * * Use this function to check if GStreamer has been initialized with gst_init() * or gst_init_check(). * * Returns: %TRUE if initialization has been done, %FALSE otherwise. */ gboolean gst_is_initialized (void) { return gst_initialized; } #ifndef GST_DISABLE_OPTION_PARSING # ifndef GST_DISABLE_REGISTRY static void add_path_func (gpointer data, gpointer user_data) { GST_INFO ("Adding plugin path: \"%s\", will scan later", (gchar *) data); _priv_gst_plugin_paths = g_list_append (_priv_gst_plugin_paths, g_strdup (data)); } # endif #endif #ifndef GST_DISABLE_OPTION_PARSING static void prepare_for_load_plugin_func (gpointer data, gpointer user_data) { _priv_gst_preload_plugins = g_slist_prepend (_priv_gst_preload_plugins, g_strdup (data)); } #endif #ifndef GST_DISABLE_OPTION_PARSING static void split_and_iterate (const gchar * stringlist, const gchar * separator, GFunc iterator, gpointer user_data) { gchar **strings; gint j = 0; gchar *lastlist = g_strdup (stringlist); while (lastlist) { strings = g_strsplit (lastlist, separator, MAX_PATH_SPLIT); g_free (lastlist); lastlist = NULL; while (strings[j]) { iterator (strings[j], user_data); if (++j == MAX_PATH_SPLIT) { lastlist = g_strdup (strings[j]); j = 0; break; } } g_strfreev (strings); } } #endif /* we have no fail cases yet, but maybe in the future */ static gboolean init_pre (GOptionContext * context, GOptionGroup * group, gpointer data, GError ** error) { gchar *libdir; if (gst_initialized) { GST_DEBUG ("already initialized"); return TRUE; } find_executable_path (); _priv_gst_start_time = gst_util_get_timestamp (); #ifndef GST_DISABLE_GST_DEBUG _priv_gst_debug_init (); priv_gst_dump_dot_dir = g_getenv ("GST_DEBUG_DUMP_DOT_DIR"); #endif #ifdef ENABLE_NLS bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR); bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8"); #endif /* ENABLE_NLS */ /* This is the earliest we can make stuff show up in the logs. * So give some useful info about GStreamer here */ #ifdef G_OS_WIN32 { gchar *basedir = g_win32_get_package_installation_directory_of_module (_priv_gst_dll_handle); libdir = g_build_filename (basedir, #ifdef _DEBUG "debug" #endif "lib", NULL); g_free (basedir); } #else libdir = g_strdup (LIBDIR); #endif GST_INFO ("Initializing GStreamer Core Library version %s", VERSION); GST_INFO ("Using library installed in %s", libdir); g_free (libdir); #ifndef GST_DISABLE_REGISTRY { const gchar *disable_registry; if ((disable_registry = g_getenv ("GST_REGISTRY_DISABLE"))) { _priv_gst_disable_registry = (strcmp (disable_registry, "yes") == 0); } } #endif /* Print some basic system details if possible (OS/architecture) */ #ifdef HAVE_SYS_UTSNAME_H { struct utsname sys_details; if (uname (&sys_details) == 0) { GST_INFO ("%s %s %s %s %s", sys_details.sysname, sys_details.nodename, sys_details.release, sys_details.version, sys_details.machine); } } #endif #ifndef G_ATOMIC_LOCK_FREE GST_CAT_WARNING (GST_CAT_PERFORMANCE, "GLib atomic operations are NOT " "implemented using real hardware atomic operations!"); #endif return TRUE; } static gboolean gst_register_core_elements (GstPlugin * plugin) { /* register some standard builtin types */ if (!gst_element_register (plugin, "bin", GST_RANK_PRIMARY, GST_TYPE_BIN) || !gst_element_register (plugin, "pipeline", GST_RANK_PRIMARY, GST_TYPE_PIPELINE) ) g_assert_not_reached (); return TRUE; } /* * this bit handles: * - initialization of threads if we use them * - log handler * - initial output * - initializes gst_format * - registers a bunch of types for gst_objects * * - we don't have cases yet where this fails, but in the future * we might and then it's nice to be able to return that */ static gboolean init_post (GOptionContext * context, GOptionGroup * group, gpointer data, GError ** error) { GLogLevelFlags llf; if (gst_initialized) { GST_DEBUG ("already initialized"); return TRUE; } llf = G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL; g_log_set_handler (g_log_domain_gstreamer, llf, debug_log_handler, NULL); _priv_gst_mini_object_initialize (); _priv_gst_quarks_initialize (); _priv_gst_allocator_initialize (); _priv_gst_memory_initialize (); _priv_gst_format_initialize (); _priv_gst_query_initialize (); _priv_gst_structure_initialize (); _priv_gst_caps_initialize (); _priv_gst_caps_features_initialize (); _priv_gst_meta_initialize (); _priv_gst_message_initialize (); g_type_class_ref (gst_object_get_type ()); g_type_class_ref (gst_pad_get_type ()); g_type_class_ref (gst_element_factory_get_type ()); g_type_class_ref (gst_element_get_type ()); g_type_class_ref (gst_tracer_factory_get_type ()); g_type_class_ref (gst_type_find_factory_get_type ()); g_type_class_ref (gst_bin_get_type ()); g_type_class_ref (gst_bus_get_type ()); g_type_class_ref (gst_task_get_type ()); g_type_class_ref (gst_clock_get_type ()); g_type_class_ref (gst_debug_color_mode_get_type ()); gst_uri_handler_get_type (); g_type_class_ref (gst_object_flags_get_type ()); g_type_class_ref (gst_bin_flags_get_type ()); g_type_class_ref (gst_buffer_flags_get_type ()); g_type_class_ref (gst_buffer_copy_flags_get_type ()); g_type_class_ref (gst_bus_flags_get_type ()); g_type_class_ref (gst_bus_sync_reply_get_type ()); g_type_class_ref (gst_caps_flags_get_type ()); g_type_class_ref (gst_clock_return_get_type ()); g_type_class_ref (gst_clock_entry_type_get_type ()); g_type_class_ref (gst_clock_flags_get_type ()); g_type_class_ref (gst_clock_type_get_type ()); g_type_class_ref (gst_debug_graph_details_get_type ()); g_type_class_ref (gst_state_get_type ()); g_type_class_ref (gst_state_change_return_get_type ()); g_type_class_ref (gst_state_change_get_type ()); g_type_class_ref (gst_element_flags_get_type ()); g_type_class_ref (gst_tracer_value_scope_get_type ()); g_type_class_ref (gst_tracer_value_flags_get_type ()); g_type_class_ref (gst_core_error_get_type ()); g_type_class_ref (gst_library_error_get_type ()); g_type_class_ref (gst_resource_error_get_type ()); g_type_class_ref (gst_stream_error_get_type ()); g_type_class_ref (gst_event_type_flags_get_type ()); g_type_class_ref (gst_event_type_get_type ()); g_type_class_ref (gst_seek_type_get_type ()); g_type_class_ref (gst_seek_flags_get_type ()); g_type_class_ref (gst_qos_type_get_type ()); g_type_class_ref (gst_format_get_type ()); g_type_class_ref (gst_debug_level_get_type ()); g_type_class_ref (gst_debug_color_flags_get_type ()); g_type_class_ref (gst_iterator_result_get_type ()); g_type_class_ref (gst_iterator_item_get_type ()); g_type_class_ref (gst_message_type_get_type ()); g_type_class_ref (gst_mini_object_flags_get_type ()); g_type_class_ref (gst_pad_link_return_get_type ()); g_type_class_ref (gst_pad_link_check_get_type ()); g_type_class_ref (gst_flow_return_get_type ()); g_type_class_ref (gst_pad_mode_get_type ()); g_type_class_ref (gst_pad_direction_get_type ()); g_type_class_ref (gst_pad_flags_get_type ()); g_type_class_ref (gst_pad_presence_get_type ()); g_type_class_ref (gst_pad_template_flags_get_type ()); g_type_class_ref (gst_pipeline_flags_get_type ()); g_type_class_ref (gst_plugin_error_get_type ()); g_type_class_ref (gst_plugin_flags_get_type ()); g_type_class_ref (gst_plugin_dependency_flags_get_type ()); g_type_class_ref (gst_rank_get_type ()); g_type_class_ref (gst_query_type_flags_get_type ()); g_type_class_ref (gst_query_type_get_type ()); g_type_class_ref (gst_buffering_mode_get_type ()); g_type_class_ref (gst_stream_status_type_get_type ()); g_type_class_ref (gst_structure_change_type_get_type ()); g_type_class_ref (gst_tag_merge_mode_get_type ()); g_type_class_ref (gst_tag_flag_get_type ()); g_type_class_ref (gst_tag_scope_get_type ()); g_type_class_ref (gst_task_pool_get_type ()); g_type_class_ref (gst_task_state_get_type ()); g_type_class_ref (gst_toc_entry_type_get_type ()); g_type_class_ref (gst_type_find_probability_get_type ()); g_type_class_ref (gst_uri_error_get_type ()); g_type_class_ref (gst_uri_type_get_type ()); g_type_class_ref (gst_parse_error_get_type ()); g_type_class_ref (gst_parse_flags_get_type ()); g_type_class_ref (gst_search_mode_get_type ()); g_type_class_ref (gst_progress_type_get_type ()); g_type_class_ref (gst_buffer_pool_acquire_flags_get_type ()); g_type_class_ref (gst_memory_flags_get_type ()); g_type_class_ref (gst_map_flags_get_type ()); g_type_class_ref (gst_caps_intersect_mode_get_type ()); g_type_class_ref (gst_pad_probe_type_get_type ()); g_type_class_ref (gst_pad_probe_return_get_type ()); g_type_class_ref (gst_segment_flags_get_type ()); g_type_class_ref (gst_scheduling_flags_get_type ()); g_type_class_ref (gst_meta_flags_get_type ()); g_type_class_ref (gst_toc_entry_type_get_type ()); g_type_class_ref (gst_toc_scope_get_type ()); g_type_class_ref (gst_toc_loop_type_get_type ()); g_type_class_ref (gst_control_binding_get_type ()); g_type_class_ref (gst_control_source_get_type ()); g_type_class_ref (gst_lock_flags_get_type ()); g_type_class_ref (gst_allocator_flags_get_type ()); g_type_class_ref (gst_stream_flags_get_type ()); g_type_class_ref (gst_stream_type_get_type ()); g_type_class_ref (gst_stack_trace_flags_get_type ()); g_type_class_ref (gst_promise_result_get_type ()); _priv_gst_event_initialize (); _priv_gst_buffer_initialize (); _priv_gst_buffer_list_initialize (); _priv_gst_sample_initialize (); _priv_gst_context_initialize (); _priv_gst_date_time_initialize (); _priv_gst_value_initialize (); _priv_gst_tag_initialize (); _priv_gst_toc_initialize (); g_type_class_ref (gst_param_spec_fraction_get_type ()); gst_parse_context_get_type (); _priv_gst_plugin_initialize (); /* register core plugins */ gst_plugin_register_static (GST_VERSION_MAJOR, GST_VERSION_MINOR, "staticelements", "core elements linked into the GStreamer library", gst_register_core_elements, VERSION, GST_LICENSE, PACKAGE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN); /* * Any errors happening below this point are non-fatal, we therefore mark * gstreamer as being initialized, since it is the case from a plugin point of * view. * * If anything fails, it will be put back to %FALSE in gst_init_check(). * This allows some special plugins that would call gst_init() to not cause a * looping effect (i.e. initializing GStreamer twice). */ gst_initialized = TRUE; if (!gst_update_registry ()) return FALSE; GST_INFO ("GLib runtime version: %d.%d.%d", glib_major_version, glib_minor_version, glib_micro_version); GST_INFO ("GLib headers version: %d.%d.%d", GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION, GLIB_MICRO_VERSION); GST_INFO ("initialized GStreamer successfully"); #ifndef GST_DISABLE_GST_DEBUG _priv_gst_tracing_init (); #endif return TRUE; } #ifndef GST_DISABLE_OPTION_PARSING # ifndef GST_DISABLE_GST_DEBUG static gboolean select_all (GstPlugin * plugin, gpointer user_data) { return TRUE; } static gint sort_by_category_name (gconstpointer a, gconstpointer b) { return strcmp (gst_debug_category_get_name ((GstDebugCategory *) a), gst_debug_category_get_name ((GstDebugCategory *) b)); } static void gst_debug_help (void) { GSList *list, *walk; GList *list2, *g; /* Need to ensure the registry is loaded to get debug categories */ if (!init_post (NULL, NULL, NULL, NULL)) exit (1); list2 = gst_registry_plugin_filter (gst_registry_get (), select_all, FALSE, NULL); /* FIXME this is gross. why don't debug have categories PluginFeatures? */ for (g = list2; g; g = g_list_next (g)) { GstPlugin *plugin = GST_PLUGIN_CAST (g->data); GList *features, *orig_features; if (GST_OBJECT_FLAG_IS_SET (plugin, GST_PLUGIN_FLAG_BLACKLISTED)) continue; gst_plugin_load (plugin); /* Now create one of each feature so the class_init functions * are called, as that's where most debug categories are * registered. FIXME: If debug categories were a plugin feature, * this would be unneeded */ orig_features = features = gst_registry_get_feature_list_by_plugin (gst_registry_get (), gst_plugin_get_name (plugin)); while (features) { GstPluginFeature *feature; if (G_UNLIKELY (features->data == NULL)) goto next; feature = GST_PLUGIN_FEATURE (features->data); if (GST_IS_ELEMENT_FACTORY (feature)) { GstElementFactory *factory; GstElement *e; factory = GST_ELEMENT_FACTORY (feature); e = gst_element_factory_create (factory, NULL); if (e) gst_object_unref (e); } next: features = g_list_next (features); } gst_plugin_feature_list_free (orig_features); } g_list_free (list2); list = gst_debug_get_all_categories (); walk = list = g_slist_sort (list, sort_by_category_name); g_print ("\n"); g_print ("name level description\n"); g_print ("---------------------+--------+--------------------------------\n"); while (walk) { gboolean on_unix; GstDebugCategory *cat = (GstDebugCategory *) walk->data; GstDebugColorMode coloring = gst_debug_get_color_mode (); #ifdef G_OS_UNIX on_unix = TRUE; #else on_unix = FALSE; #endif if (GST_DEBUG_COLOR_MODE_UNIX == coloring || (on_unix && GST_DEBUG_COLOR_MODE_ON == coloring)) { gchar *color = gst_debug_construct_term_color (cat->color); g_print ("%s%-20s\033[00m %1d %s %s%s\033[00m\n", color, gst_debug_category_get_name (cat), gst_debug_category_get_threshold (cat), gst_debug_level_get_name (gst_debug_category_get_threshold (cat)), color, gst_debug_category_get_description (cat)); g_free (color); } else if (GST_DEBUG_COLOR_MODE_ON == coloring && !on_unix) { #ifdef G_OS_WIN32 gint color = gst_debug_construct_win_color (cat->color); const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE; SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color); g_print ("%-20s", gst_debug_category_get_name (cat)); SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear); g_print (" %1d %s ", gst_debug_category_get_threshold (cat), gst_debug_level_get_name (gst_debug_category_get_threshold (cat))); SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), color); g_print ("%s", gst_debug_category_get_description (cat)); SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), clear); g_print ("\n"); #endif /* G_OS_WIN32 */ } else { g_print ("%-20s %1d %s %s\n", gst_debug_category_get_name (cat), gst_debug_category_get_threshold (cat), gst_debug_level_get_name (gst_debug_category_get_threshold (cat)), gst_debug_category_get_description (cat)); } walk = g_slist_next (walk); } g_slist_free (list); g_print ("\n"); } # endif /* GST_DISABLE_OPTION_PARSING */ #endif /* GST_DISABLE_GST_DEBUG */ #ifndef GST_DISABLE_OPTION_PARSING static gboolean parse_one_option (gint opt, const gchar * arg, GError ** err) { switch (opt) { case ARG_VERSION: g_print ("GStreamer Core Library version %s\n", PACKAGE_VERSION); exit (0); case ARG_FATAL_WARNINGS:{ GLogLevelFlags fatal_mask; fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK); fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL; g_log_set_always_fatal (fatal_mask); break; } #ifndef GST_DISABLE_GST_DEBUG case ARG_DEBUG_LEVEL:{ GstDebugLevel tmp = GST_LEVEL_NONE; tmp = (GstDebugLevel) strtol (arg, NULL, 0); if (((guint) tmp) < GST_LEVEL_COUNT) { gst_debug_set_default_threshold (tmp); } break; } case ARG_DEBUG: gst_debug_set_threshold_from_string (arg, FALSE); break; case ARG_DEBUG_NO_COLOR: gst_debug_set_colored (FALSE); break; case ARG_DEBUG_COLOR_MODE: gst_debug_set_color_mode_from_string (arg); break; case ARG_DEBUG_DISABLE: gst_debug_set_active (FALSE); break; case ARG_DEBUG_HELP: gst_debug_help (); exit (0); #endif case ARG_PLUGIN_SPEW: break; case ARG_PLUGIN_PATH: #ifndef GST_DISABLE_REGISTRY if (!_priv_gst_disable_registry) split_and_iterate (arg, G_SEARCHPATH_SEPARATOR_S, add_path_func, NULL); #endif /* GST_DISABLE_REGISTRY */ break; case ARG_PLUGIN_LOAD: split_and_iterate (arg, ",", prepare_for_load_plugin_func, NULL); break; case ARG_SEGTRAP_DISABLE: _gst_disable_segtrap = TRUE; break; case ARG_REGISTRY_UPDATE_DISABLE: #ifndef GST_DISABLE_REGISTRY if (!_priv_gst_disable_registry) _priv_gst_disable_registry_update = TRUE; #endif break; case ARG_REGISTRY_FORK_DISABLE: gst_registry_fork_set_enabled (FALSE); break; default: g_set_error (err, G_OPTION_ERROR, G_OPTION_ERROR_UNKNOWN_OPTION, _("Unknown option")); return FALSE; } return TRUE; } static gboolean parse_goption_arg (const gchar * opt, const gchar * arg, gpointer data, GError ** err) { static const struct { const gchar *opt; int val; } options[] = { { "--gst-version", ARG_VERSION}, { "--gst-fatal-warnings", ARG_FATAL_WARNINGS}, #ifndef GST_DISABLE_GST_DEBUG { "--gst-debug-level", ARG_DEBUG_LEVEL}, { "--gst-debug", ARG_DEBUG}, { "--gst-debug-disable", ARG_DEBUG_DISABLE}, { "--gst-debug-no-color", ARG_DEBUG_NO_COLOR}, { "--gst-debug-color-mode", ARG_DEBUG_COLOR_MODE}, { "--gst-debug-help", ARG_DEBUG_HELP}, #endif { "--gst-plugin-spew", ARG_PLUGIN_SPEW}, { "--gst-plugin-path", ARG_PLUGIN_PATH}, { "--gst-plugin-load", ARG_PLUGIN_LOAD}, { "--gst-disable-segtrap", ARG_SEGTRAP_DISABLE}, { "--gst-disable-registry-update", ARG_REGISTRY_UPDATE_DISABLE}, { "--gst-disable-registry-fork", ARG_REGISTRY_FORK_DISABLE}, { NULL} }; gint val = 0, n; for (n = 0; options[n].opt; n++) { if (!strcmp (opt, options[n].opt)) { val = options[n].val; break; } } return parse_one_option (val, arg, err); } #endif /** * gst_deinit: * * Clean up any resources created by GStreamer in gst_init(). * * It is normally not needed to call this function in a normal application * as the resources will automatically be freed when the program terminates. * This function is therefore mostly used by testsuites and other memory * profiling tools. * * After this call GStreamer (including this method) should not be used anymore. */ void gst_deinit (void) { GstBinClass *bin_class; GstClock *clock; if (!gst_initialized) return; GST_INFO ("deinitializing GStreamer"); if (gst_deinitialized) { GST_DEBUG ("already deinitialized"); return; } g_thread_pool_set_max_unused_threads (0); bin_class = (GstBinClass *) g_type_class_peek (gst_bin_get_type ()); if (bin_class && bin_class->pool != NULL) { g_thread_pool_free (bin_class->pool, FALSE, TRUE); bin_class->pool = NULL; } gst_task_cleanup_all (); g_slist_foreach (_priv_gst_preload_plugins, (GFunc) g_free, NULL); g_slist_free (_priv_gst_preload_plugins); _priv_gst_preload_plugins = NULL; #ifndef GST_DISABLE_REGISTRY g_list_foreach (_priv_gst_plugin_paths, (GFunc) g_free, NULL); g_list_free (_priv_gst_plugin_paths); _priv_gst_plugin_paths = NULL; #endif if (_gst_executable_path) { g_free (_gst_executable_path); _gst_executable_path = NULL; } clock = gst_system_clock_obtain (); gst_object_unref (clock); gst_object_unref (clock); _priv_gst_registry_cleanup (); _priv_gst_allocator_cleanup (); /* We want to destroy tracers as late as possible for the leaks tracer * but still need to keep the caps system alive as it may have to use * gst_caps_to_string() to display leaked caps. */ #ifndef GST_DISABLE_GST_DEBUG _priv_gst_tracing_deinit (); #endif _priv_gst_caps_features_cleanup (); _priv_gst_caps_cleanup (); _priv_gst_debug_cleanup (); g_type_class_unref (g_type_class_peek (gst_object_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_get_type ())); g_type_class_unref (g_type_class_peek (gst_element_factory_get_type ())); g_type_class_unref (g_type_class_peek (gst_element_get_type ())); g_type_class_unref (g_type_class_peek (gst_tracer_factory_get_type ())); g_type_class_unref (g_type_class_peek (gst_type_find_factory_get_type ())); g_type_class_unref (g_type_class_peek (gst_bin_get_type ())); g_type_class_unref (g_type_class_peek (gst_bus_get_type ())); g_type_class_unref (g_type_class_peek (gst_task_get_type ())); g_type_class_unref (g_type_class_peek (gst_object_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_bin_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_buffer_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_buffer_copy_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_bus_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_bus_sync_reply_get_type ())); g_type_class_unref (g_type_class_peek (gst_caps_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_clock_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_clock_return_get_type ())); g_type_class_unref (g_type_class_peek (gst_clock_entry_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_clock_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_debug_graph_details_get_type ())); g_type_class_unref (g_type_class_peek (gst_state_get_type ())); g_type_class_unref (g_type_class_peek (gst_state_change_return_get_type ())); g_type_class_unref (g_type_class_peek (gst_state_change_get_type ())); g_type_class_unref (g_type_class_peek (gst_element_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_tracer_value_scope_get_type ())); g_type_class_unref (g_type_class_peek (gst_tracer_value_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_core_error_get_type ())); g_type_class_unref (g_type_class_peek (gst_library_error_get_type ())); g_type_class_unref (g_type_class_peek (gst_plugin_dependency_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_parse_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_resource_error_get_type ())); g_type_class_unref (g_type_class_peek (gst_search_mode_get_type ())); g_type_class_unref (g_type_class_peek (gst_stream_error_get_type ())); g_type_class_unref (g_type_class_peek (gst_stream_status_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_structure_change_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_event_type_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_event_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_seek_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_seek_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_qos_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_format_get_type ())); g_type_class_unref (g_type_class_peek (gst_debug_level_get_type ())); g_type_class_unref (g_type_class_peek (gst_debug_color_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_iterator_result_get_type ())); g_type_class_unref (g_type_class_peek (gst_iterator_item_get_type ())); g_type_class_unref (g_type_class_peek (gst_message_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_meta_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_mini_object_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_link_return_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_link_check_get_type ())); g_type_class_unref (g_type_class_peek (gst_flow_return_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_mode_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_direction_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_presence_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_template_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_pipeline_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_plugin_error_get_type ())); g_type_class_unref (g_type_class_peek (gst_plugin_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_rank_get_type ())); g_type_class_unref (g_type_class_peek (gst_query_type_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_query_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_buffering_mode_get_type ())); g_type_class_unref (g_type_class_peek (gst_tag_merge_mode_get_type ())); g_type_class_unref (g_type_class_peek (gst_tag_flag_get_type ())); g_type_class_unref (g_type_class_peek (gst_tag_scope_get_type ())); g_type_class_unref (g_type_class_peek (gst_task_state_get_type ())); g_type_class_unref (g_type_class_peek (gst_toc_entry_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_toc_scope_get_type ())); g_type_class_unref (g_type_class_peek (gst_type_find_probability_get_type ())); g_type_class_unref (g_type_class_peek (gst_uri_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_uri_error_get_type ())); g_type_class_unref (g_type_class_peek (gst_parse_error_get_type ())); g_type_class_unref (g_type_class_peek (gst_param_spec_fraction_get_type ())); g_type_class_unref (g_type_class_peek (gst_progress_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_buffer_pool_acquire_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_memory_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_map_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_caps_intersect_mode_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_probe_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_pad_probe_return_get_type ())); g_type_class_unref (g_type_class_peek (gst_segment_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_scheduling_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_stream_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_control_binding_get_type ())); g_type_class_unref (g_type_class_peek (gst_control_source_get_type ())); g_type_class_unref (g_type_class_peek (gst_toc_entry_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_toc_loop_type_get_type ())); g_type_class_unref (g_type_class_peek (gst_lock_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_allocator_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_stream_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_debug_color_mode_get_type ())); g_type_class_unref (g_type_class_peek (gst_stack_trace_flags_get_type ())); g_type_class_unref (g_type_class_peek (gst_promise_result_get_type ())); gst_deinitialized = TRUE; GST_INFO ("deinitialized GStreamer"); } /** * gst_version: * @major: (out): pointer to a guint to store the major version number * @minor: (out): pointer to a guint to store the minor version number * @micro: (out): pointer to a guint to store the micro version number * @nano: (out): pointer to a guint to store the nano version number * * Gets the version number of the GStreamer library. */ void gst_version (guint * major, guint * minor, guint * micro, guint * nano) { g_return_if_fail (major); g_return_if_fail (minor); g_return_if_fail (micro); g_return_if_fail (nano); *major = GST_VERSION_MAJOR; *minor = GST_VERSION_MINOR; *micro = GST_VERSION_MICRO; *nano = GST_VERSION_NANO; } /** * gst_version_string: * * This function returns a string that is useful for describing this version * of GStreamer to the outside world: user agent strings, logging, ... * * Returns: (transfer full): a newly allocated string describing this version * of GStreamer. */ gchar * gst_version_string (void) { guint major, minor, micro, nano; gst_version (&major, &minor, µ, &nano); if (nano == 0) return g_strdup_printf ("GStreamer %d.%d.%d", major, minor, micro); else if (nano == 1) return g_strdup_printf ("GStreamer %d.%d.%d (GIT)", major, minor, micro); else return g_strdup_printf ("GStreamer %d.%d.%d (prerelease)", major, minor, micro); } /** * gst_segtrap_is_enabled: * * Some functions in the GStreamer core might install a custom SIGSEGV handler * to better catch and report errors to the application. Currently this feature * is enabled by default when loading plugins. * * Applications might want to disable this behaviour with the * gst_segtrap_set_enabled() function. This is typically done if the application * wants to install its own handler without GStreamer interfering. * * Returns: %TRUE if GStreamer is allowed to install a custom SIGSEGV handler. */ gboolean gst_segtrap_is_enabled (void) { /* yeps, it's enabled when it's not disabled */ return !_gst_disable_segtrap; } /** * gst_segtrap_set_enabled: * @enabled: whether a custom SIGSEGV handler should be installed. * * Applications might want to disable/enable the SIGSEGV handling of * the GStreamer core. See gst_segtrap_is_enabled() for more information. */ void gst_segtrap_set_enabled (gboolean enabled) { _gst_disable_segtrap = !enabled; }