/**
* 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 discreet
+ * (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
* and argv variables so that GStreamer can process its own command line
* options, as shown in the following example.
*
- * <example>
- * <title>Initializing the gstreamer library</title>
- * <programlisting language="c">
+ * ## Initializing the gstreamer library
+ *
+ * |[ <!-- language="C" -->
* int
* main (int argc, char *argv[])
* {
* gst_init (&argc, &argv);
* ...
* }
- * </programlisting>
- * </example>
+ * ]|
*
- * It's allowed to pass two NULL pointers to gst_init() in case you don't want
+ * 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:
- * <example>
- * <title>Initializing own parameters when initializing gstreamer</title>
- * <programlisting>
+ *
+ * ## Initializing own parameters when initializing gstreamer
+ * |[ <!-- language="C" -->
* static gboolean stats = FALSE;
* ...
* int
* g_option_context_free (ctx);
* ...
* }
- * </programlisting>
- * </example>
+ * ]|
*
* 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 <application>GStreamer</application>. It is mostly used in unit tests
- * to check for leaks.
+ * by GStreamer. It is mostly used in unit tests to check for leaks.
*/
#include "gst_private.h"
#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"
-#include "gsttrace.h"
#define GST_CAT_DEFAULT GST_CAT_GST_INIT
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 post_init */
+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
*/
#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)
* threading system as one of the very first things in your program
* (see the example at the beginning of this section).
*
- * Returns: (transfer full): a pointer to GStreamer's option group.
+ * Returns: (transfer full) (nullable): a pointer to GStreamer's option group.
*/
GOptionGroup *
#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
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
gst_initialized = res;
- if (res) {
- GST_INFO ("initialized GStreamer successfully");
- } else {
- GST_INFO ("failed to initialize GStreamer");
- }
+ g_mutex_unlock (&init_lock);
return res;
}
* <link linkend="gst-running">Running GStreamer Applications</link>
* for how to disable automatic registry updates.
*
- * <note><para>
- * 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.
- * </para></note>
+ * > 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
* 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.
+ * Returns: %TRUE if initialization has been done, %FALSE otherwise.
*/
gboolean
gst_is_initialized (void)
return gst_initialized;
}
-#ifndef GST_DISABLE_REGISTRY
+#ifndef GST_DISABLE_OPTION_PARSING
+# ifndef GST_DISABLE_REGISTRY
static void
add_path_func (gpointer data, gpointer user_data)
{
_priv_gst_plugin_paths =
g_list_append (_priv_gst_plugin_paths, g_strdup (data));
}
+# endif
#endif
#ifndef GST_DISABLE_OPTION_PARSING
GST_DEBUG ("already initialized");
return TRUE;
}
-#if !GLIB_CHECK_VERSION(2, 35, 0)
- g_type_init ();
-#endif
+
+ find_executable_path ();
+
+ _priv_gst_start_time = gst_util_get_timestamp ();
#ifndef GST_DISABLE_GST_DEBUG
_priv_gst_debug_init ();
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
{
/*
* this bit handles:
- * - initalization of threads if we use them
+ * - initialization of threads if we use them
* - log handler
* - initial output
* - initializes gst_format
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);
-#ifndef GST_DISABLE_TRACE
- _priv_gst_alloc_trace_initialize ();
-#endif
-
_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_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_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_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_message_initialize ();
_priv_gst_buffer_list_initialize ();
_priv_gst_sample_initialize ();
- _priv_gst_value_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 ());
- _priv_gst_tag_initialize ();
gst_parse_context_get_type ();
_priv_gst_plugin_initialize ();
* 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().
+ * 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).
*/
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_GST_DEBUG
+#ifndef GST_DISABLE_OPTION_PARSING
+# ifndef GST_DISABLE_GST_DEBUG
static gboolean
select_all (GstPlugin * plugin, gpointer user_data)
{
/* 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);
g_slist_free (list);
g_print ("\n");
}
-#endif
+# endif /* GST_DISABLE_OPTION_PARSING */
+#endif /* GST_DISABLE_GST_DEBUG */
#ifndef GST_DISABLE_OPTION_PARSING
static gboolean
break;
case ARG_PLUGIN_PATH:
#ifndef GST_DISABLE_REGISTRY
- split_and_iterate (arg, G_SEARCHPATH_SEPARATOR_S, add_path_func, NULL);
+ 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:
break;
case ARG_REGISTRY_UPDATE_DISABLE:
#ifndef GST_DISABLE_REGISTRY
- _priv_gst_disable_registry_update = TRUE;
+ if (!_priv_gst_disable_registry)
+ _priv_gst_disable_registry_update = TRUE;
#endif
break;
case ARG_REGISTRY_FORK_DISABLE:
* 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.
+ * 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 = GST_BIN_CLASS (g_type_class_peek (gst_bin_get_type ()));
- if (bin_class->pool != NULL) {
+ 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;
}
_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 ();
-#ifndef GST_DISABLE_TRACE
- _priv_gst_alloc_trace_deinit ();
+ /* 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 ();
+
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_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_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_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");