2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
5 * gst_private.h: Private header for within libgst
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
23 #ifndef __GST_PRIVATE_H__
24 #define __GST_PRIVATE_H__
27 # ifndef GST_LICENSE /* don't include config.h twice, it has no guards */
32 /* This needs to be before glib.h, since it might be used in inline
34 extern const char g_log_domain_gstreamer[];
41 /* Needed for GST_API */
42 #include "gst/gstconfig.h"
44 /* Needed for GstRegistry * */
45 #include "gstregistry.h"
46 #include "gststructure.h"
48 /* we need this in pretty much all files */
51 /* for the flags in the GstPluginDep structure below */
52 #include "gstplugin.h"
54 /* for the pad cache */
58 #include "gstelement.h"
60 /* for GstDeviceProvider */
61 #include "gstdeviceprovider.h"
66 #include "gstdatetime.h"
68 #include "gsttracerutils.h"
72 /* used by gstparse.c and grammar.y */
73 struct _GstParseContext {
74 GList * missing_elements;
77 /* used by gstplugin.c and gstregistrybinary.c */
79 /* details registered via gst_plugin_add_dependency() */
80 GstPluginDependencyFlags flags;
85 /* information saved from the last time the plugin was loaded (-1 = unset) */
86 guint env_hash; /* hash of content of environment variables in env_vars */
87 guint stat_hash; /* hash of stat() on all relevant files and directories */
90 struct _GstPluginPrivate {
91 GList *deps; /* list of GstPluginDep structures */
92 GstStructure *cache_data;
95 /* Needed by GstMeta (to access meta seq) and GstBuffer (create/free/iterate) */
96 typedef struct _GstMetaItem GstMetaItem;
103 /* FIXME: could rename all priv_gst_* functions to __gst_* now */
104 G_GNUC_INTERNAL gboolean priv_gst_plugin_loading_have_whitelist (void);
106 G_GNUC_INTERNAL guint32 priv_gst_plugin_loading_get_whitelist_hash (void);
108 G_GNUC_INTERNAL gboolean priv_gst_plugin_desc_is_whitelisted (const GstPluginDesc * desc,
109 const gchar * filename);
111 G_GNUC_INTERNAL gboolean _priv_plugin_deps_env_vars_changed (GstPlugin * plugin);
113 G_GNUC_INTERNAL gboolean _priv_plugin_deps_files_changed (GstPlugin * plugin);
115 G_GNUC_INTERNAL gboolean _priv_gst_in_valgrind (void);
117 /* init functions called from gst_init(). */
118 G_GNUC_INTERNAL void _priv_gst_quarks_initialize (void);
119 G_GNUC_INTERNAL void _priv_gst_mini_object_initialize (void);
120 G_GNUC_INTERNAL void _priv_gst_memory_initialize (void);
121 G_GNUC_INTERNAL void _priv_gst_allocator_initialize (void);
122 G_GNUC_INTERNAL void _priv_gst_buffer_initialize (void);
123 G_GNUC_INTERNAL void _priv_gst_buffer_list_initialize (void);
124 G_GNUC_INTERNAL void _priv_gst_structure_initialize (void);
125 G_GNUC_INTERNAL void _priv_gst_caps_initialize (void);
126 G_GNUC_INTERNAL void _priv_gst_caps_features_initialize (void);
127 G_GNUC_INTERNAL void _priv_gst_event_initialize (void);
128 G_GNUC_INTERNAL void _priv_gst_format_initialize (void);
129 G_GNUC_INTERNAL void _priv_gst_message_initialize (void);
130 G_GNUC_INTERNAL void _priv_gst_meta_initialize (void);
131 G_GNUC_INTERNAL void _priv_gst_plugin_initialize (void);
132 G_GNUC_INTERNAL void _priv_gst_query_initialize (void);
133 G_GNUC_INTERNAL void _priv_gst_sample_initialize (void);
134 G_GNUC_INTERNAL void _priv_gst_tag_initialize (void);
135 G_GNUC_INTERNAL void _priv_gst_value_initialize (void);
136 G_GNUC_INTERNAL void _priv_gst_debug_init (void);
137 G_GNUC_INTERNAL void _priv_gst_context_initialize (void);
138 G_GNUC_INTERNAL void _priv_gst_toc_initialize (void);
139 G_GNUC_INTERNAL void _priv_gst_date_time_initialize (void);
141 /* cleanup functions called from gst_deinit(). */
142 G_GNUC_INTERNAL void _priv_gst_allocator_cleanup (void);
143 G_GNUC_INTERNAL void _priv_gst_caps_features_cleanup (void);
144 G_GNUC_INTERNAL void _priv_gst_caps_cleanup (void);
146 /* called from gst_task_cleanup_all(). */
147 G_GNUC_INTERNAL void _priv_gst_element_cleanup (void);
149 /* Private registry functions */
151 gboolean _priv_gst_registry_remove_cache_plugins (GstRegistry *registry);
153 G_GNUC_INTERNAL void _priv_gst_registry_cleanup (void);
156 gboolean _gst_plugin_loader_client_run (void);
158 G_GNUC_INTERNAL GstPlugin * _priv_gst_plugin_load_file_for_registry (const gchar *filename,
159 GstRegistry * registry,
162 /* GValue serialization/deserialization */
164 G_GNUC_INTERNAL const char * _priv_gst_value_gtype_to_abbr (GType type);
166 G_GNUC_INTERNAL gboolean _priv_gst_value_parse_string (gchar * s, gchar ** end, gchar ** next, gboolean unescape);
167 G_GNUC_INTERNAL gboolean _priv_gst_value_parse_simple_string (gchar * str, gchar ** end);
168 G_GNUC_INTERNAL gboolean _priv_gst_value_parse_value (gchar * str, gchar ** after, GValue * value, GType default_type);
169 G_GNUC_INTERNAL gchar * _priv_gst_value_serialize_any_list (const GValue * value, const gchar * begin, const gchar * end, gboolean print_type);
171 /* Used in GstBin for manual state handling */
172 G_GNUC_INTERNAL void _priv_gst_element_state_changed (GstElement *element,
173 GstState oldstate, GstState newstate, GstState pending);
175 /* used in both gststructure.c and gstcaps.c; numbers are completely made up */
176 #define STRUCTURE_ESTIMATED_STRING_LEN(s) (16 + gst_structure_n_fields(s) * 22)
177 #define FEATURES_ESTIMATED_STRING_LEN(s) (16 + gst_caps_features_get_size(s) * 14)
180 gboolean priv_gst_structure_append_to_gstring (const GstStructure * structure,
183 gboolean priv__gst_structure_append_template_to_gstring (GQuark field_id,
188 void priv_gst_caps_features_append_to_gstring (const GstCapsFeatures * features, GString *s);
191 gboolean priv_gst_structure_parse_name (gchar * str, gchar **start, gchar ** end, gchar ** next);
193 gboolean priv_gst_structure_parse_fields (gchar *str, gchar ** end, GstStructure *structure);
195 /* used in gstvalue.c and gststructure.c */
197 #define GST_WRAPPED_PTR_FORMAT "p\aa"
200 gchar *priv_gst_string_take_and_wrap (gchar * s);
202 /* registry cache backends */
204 gboolean priv_gst_registry_binary_read_cache (GstRegistry * registry, const char *location);
207 gboolean priv_gst_registry_binary_write_cache (GstRegistry * registry, GList * plugins, const char *location);
211 void __gst_element_factory_add_static_pad_template (GstElementFactory * elementfactory,
212 GstStaticPadTemplate * templ);
215 void __gst_element_factory_add_interface (GstElementFactory * elementfactory,
216 const gchar * interfacename);
218 /* used in gstvalue.c and gststructure.c */
219 #define GST_ASCII_IS_STRING(c) (g_ascii_isalnum((c)) || ((c) == '_') || \
220 ((c) == '-') || ((c) == '+') || ((c) == '/') || ((c) == ':') || \
223 /* This is only meant for internal uses */
225 gint __gst_date_time_compare (const GstDateTime * dt1, const GstDateTime * dt2);
228 gchar * __gst_date_time_serialize (GstDateTime * datetime, gboolean with_usecs);
230 /* For use in gstdebugutils */
232 GstCapsFeatures * __gst_caps_get_features_unchecked (const GstCaps * caps, guint idx);
234 #ifndef GST_DISABLE_REGISTRY
235 /* Secret variable to initialise gst without registry cache */
237 GST_API gboolean _gst_disable_registry_cache;
240 /* Secret variable to let the plugin scanner use the same base path
241 * as the main application in order to determine dependencies */
242 GST_API gchar *_gst_executable_path;
244 /* provide inline gst_g_value_get_foo_unchecked(), used in gststructure.c */
245 #define DEFINE_INLINE_G_VALUE_GET_UNCHECKED(ret_type,name_type,v_field) \
246 static inline ret_type \
247 gst_g_value_get_##name_type##_unchecked (const GValue *value) \
249 return value->data[0].v_field; \
252 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gboolean,boolean,v_int)
253 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gint,int,v_int)
254 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(guint,uint,v_uint)
255 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gint64,int64,v_int64)
256 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(guint64,uint64,v_uint64)
257 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gfloat,float,v_float)
258 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gdouble,double,v_double)
259 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(const gchar *,string,v_pointer)
262 /*** debugging categories *****************************************************/
264 #ifndef GST_REMOVE_GST_DEBUG
266 GST_API GstDebugCategory *GST_CAT_GST_INIT;
267 GST_API GstDebugCategory *GST_CAT_MEMORY;
268 GST_API GstDebugCategory *GST_CAT_PARENTAGE;
269 GST_API GstDebugCategory *GST_CAT_STATES;
270 GST_API GstDebugCategory *GST_CAT_SCHEDULING;
271 GST_API GstDebugCategory *GST_CAT_BUFFER;
272 GST_API GstDebugCategory *GST_CAT_BUFFER_LIST;
273 GST_API GstDebugCategory *GST_CAT_BUS;
274 GST_API GstDebugCategory *GST_CAT_CAPS;
275 GST_API GstDebugCategory *GST_CAT_CLOCK;
276 GST_API GstDebugCategory *GST_CAT_ELEMENT_PADS;
277 GST_API GstDebugCategory *GST_CAT_PADS;
278 GST_API GstDebugCategory *GST_CAT_PERFORMANCE;
279 GST_API GstDebugCategory *GST_CAT_PIPELINE;
280 GST_API GstDebugCategory *GST_CAT_PLUGIN_LOADING;
281 GST_API GstDebugCategory *GST_CAT_PLUGIN_INFO;
282 GST_API GstDebugCategory *GST_CAT_PROPERTIES;
283 GST_API GstDebugCategory *GST_CAT_NEGOTIATION;
284 GST_API GstDebugCategory *GST_CAT_REFCOUNTING;
285 GST_API GstDebugCategory *GST_CAT_ERROR_SYSTEM;
286 GST_API GstDebugCategory *GST_CAT_EVENT;
287 GST_API GstDebugCategory *GST_CAT_MESSAGE;
288 GST_API GstDebugCategory *GST_CAT_PARAMS;
289 GST_API GstDebugCategory *GST_CAT_CALL_TRACE;
290 GST_API GstDebugCategory *GST_CAT_SIGNAL;
291 GST_API GstDebugCategory *GST_CAT_PROBE;
292 GST_API GstDebugCategory *GST_CAT_REGISTRY;
293 GST_API GstDebugCategory *GST_CAT_QOS;
294 GST_API GstDebugCategory *GST_CAT_META;
295 GST_API GstDebugCategory *GST_CAT_LOCKING;
296 GST_API GstDebugCategory *GST_CAT_CONTEXT;
298 /* Categories that should be completely private to
299 * libgstreamer should be done like this: */
300 #define GST_CAT_POLL _priv_GST_CAT_POLL
301 extern GstDebugCategory *_priv_GST_CAT_POLL;
303 #define GST_CAT_PROTECTION _priv_GST_CAT_PROTECTION
304 extern GstDebugCategory *_priv_GST_CAT_PROTECTION;
306 extern GstClockTime _priv_gst_start_time;
310 #define GST_CAT_GST_INIT NULL
311 #define GST_CAT_AUTOPLUG NULL
312 #define GST_CAT_AUTOPLUG_ATTEMPT NULL
313 #define GST_CAT_PARENTAGE NULL
314 #define GST_CAT_STATES NULL
315 #define GST_CAT_SCHEDULING NULL
316 #define GST_CAT_DATAFLOW NULL
317 #define GST_CAT_BUFFER NULL
318 #define GST_CAT_BUFFER_LIST NULL
319 #define GST_CAT_BUS NULL
320 #define GST_CAT_CAPS NULL
321 #define GST_CAT_CLOCK NULL
322 #define GST_CAT_ELEMENT_PADS NULL
323 #define GST_CAT_PADS NULL
324 #define GST_CAT_PERFORMANCE NULL
325 #define GST_CAT_PIPELINE NULL
326 #define GST_CAT_PLUGIN_LOADING NULL
327 #define GST_CAT_PLUGIN_INFO NULL
328 #define GST_CAT_PROPERTIES NULL
329 #define GST_CAT_NEGOTIATION NULL
330 #define GST_CAT_REFCOUNTING NULL
331 #define GST_CAT_ERROR_SYSTEM NULL
332 #define GST_CAT_EVENT NULL
333 #define GST_CAT_MESSAGE NULL
334 #define GST_CAT_PARAMS NULL
335 #define GST_CAT_CALL_TRACE NULL
336 #define GST_CAT_SIGNAL NULL
337 #define GST_CAT_PROBE NULL
338 #define GST_CAT_REGISTRY NULL
339 #define GST_CAT_QOS NULL
340 #define GST_CAT_TYPES NULL
341 #define GST_CAT_POLL NULL
342 #define GST_CAT_META NULL
343 #define GST_CAT_LOCKING NULL
344 #define GST_CAT_CONTEXT NULL
345 #define GST_CAT_PROTECTION NULL
349 #ifdef GST_DISABLE_GST_DEBUG
350 /* for _gst_element_error_printf */
351 #define __gst_vasprintf __gst_info_fallback_vasprintf
352 int __gst_vasprintf (char **result, char const *format, va_list args);
355 /**** objects made opaque until the private bits have been made private ****/
358 #include <time.h> /* time_t */
359 #include <sys/types.h> /* off_t */
360 #include <sys/stat.h> /* off_t */
362 typedef struct _GstPluginPrivate GstPluginPrivate;
371 gchar * basename; /* base name (non-dir part) of plugin path */
373 GModule * module; /* contains the module if plugin is loaded */
377 gboolean registered; /* TRUE when the registry has seen a filename
378 * that matches the plugin's basename */
380 GstPluginPrivate *priv;
382 gpointer _gst_reserved[GST_PADDING];
385 struct _GstPluginClass {
386 GstObjectClass object_class;
389 gpointer _gst_reserved[GST_PADDING];
392 struct _GstPluginFeature {
399 const gchar *plugin_name;
400 GstPlugin *plugin; /* weak ref */
403 gpointer _gst_reserved[GST_PADDING];
406 struct _GstPluginFeatureClass {
407 GstObjectClass parent_class;
410 gpointer _gst_reserved[GST_PADDING];
413 #include "gsttypefind.h"
415 struct _GstTypeFindFactory {
416 GstPluginFeature feature;
419 GstTypeFindFunction function;
424 GDestroyNotify user_data_notify;
426 gpointer _gst_reserved[GST_PADDING];
429 struct _GstTypeFindFactoryClass {
430 GstPluginFeatureClass parent;
433 gpointer _gst_reserved[GST_PADDING];
436 struct _GstTracerFactory {
437 GstPluginFeature feature;
444 GDestroyNotify user_data_notify;
447 gpointer _gst_reserved[GST_PADDING];
450 struct _GstTracerFactoryClass {
451 GstPluginFeatureClass parent;
454 gpointer _gst_reserved[GST_PADDING];
457 struct _GstElementFactory {
458 GstPluginFeature parent;
460 GType type; /* unique GType of element or 0 if not loaded */
464 GList * staticpadtemplates; /* GstStaticPadTemplate list */
465 guint numpadtemplates;
467 /* URI interface stuff */
469 gchar ** uri_protocols;
471 GList * interfaces; /* interface type names this element implements */
474 gpointer _gst_reserved[GST_PADDING];
477 struct _GstElementFactoryClass {
478 GstPluginFeatureClass parent_class;
480 gpointer _gst_reserved[GST_PADDING];
483 struct _GstDeviceProviderFactory {
484 GstPluginFeature feature;
487 GType type; /* unique GType the device factory or 0 if not loaded */
489 volatile GstDeviceProvider *provider;
492 gpointer _gst_reserved[GST_PADDING];
495 struct _GstDeviceProviderFactoryClass {
496 GstPluginFeatureClass parent;
499 gpointer _gst_reserved[GST_PADDING];
502 struct _GstDynamicTypeFactory {
503 GstPluginFeature feature;
505 GType type; /* GType of the type, when loaded. 0 if not */
508 struct _GstDynamicTypeFactoryClass {
509 GstPluginFeatureClass parent;
512 /* privat flag used by GstBus / GstMessage */
513 #define GST_MESSAGE_FLAG_ASYNC_DELIVERY (GST_MINI_OBJECT_FLAG_LAST << 0)
516 #endif /* __GST_PRIVATE_H__ */