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_EXPORT */
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 /* FIXME: could rename all priv_gst_* functions to __gst_* now */
96 G_GNUC_INTERNAL gboolean priv_gst_plugin_loading_have_whitelist (void);
98 G_GNUC_INTERNAL guint32 priv_gst_plugin_loading_get_whitelist_hash (void);
100 G_GNUC_INTERNAL gboolean priv_gst_plugin_desc_is_whitelisted (GstPluginDesc * desc,
101 const gchar * filename);
103 G_GNUC_INTERNAL gboolean _priv_plugin_deps_env_vars_changed (GstPlugin * plugin);
105 G_GNUC_INTERNAL gboolean _priv_plugin_deps_files_changed (GstPlugin * plugin);
107 G_GNUC_INTERNAL gboolean _priv_gst_in_valgrind (void);
109 /* init functions called from gst_init(). */
110 G_GNUC_INTERNAL void _priv_gst_quarks_initialize (void);
111 G_GNUC_INTERNAL void _priv_gst_mini_object_initialize (void);
112 G_GNUC_INTERNAL void _priv_gst_memory_initialize (void);
113 G_GNUC_INTERNAL void _priv_gst_allocator_initialize (void);
114 G_GNUC_INTERNAL void _priv_gst_buffer_initialize (void);
115 G_GNUC_INTERNAL void _priv_gst_buffer_list_initialize (void);
116 G_GNUC_INTERNAL void _priv_gst_structure_initialize (void);
117 G_GNUC_INTERNAL void _priv_gst_caps_initialize (void);
118 G_GNUC_INTERNAL void _priv_gst_caps_features_initialize (void);
119 G_GNUC_INTERNAL void _priv_gst_event_initialize (void);
120 G_GNUC_INTERNAL void _priv_gst_format_initialize (void);
121 G_GNUC_INTERNAL void _priv_gst_message_initialize (void);
122 G_GNUC_INTERNAL void _priv_gst_meta_initialize (void);
123 G_GNUC_INTERNAL void _priv_gst_plugin_initialize (void);
124 G_GNUC_INTERNAL void _priv_gst_query_initialize (void);
125 G_GNUC_INTERNAL void _priv_gst_sample_initialize (void);
126 G_GNUC_INTERNAL void _priv_gst_tag_initialize (void);
127 G_GNUC_INTERNAL void _priv_gst_value_initialize (void);
128 G_GNUC_INTERNAL void _priv_gst_debug_init (void);
129 G_GNUC_INTERNAL void _priv_gst_context_initialize (void);
130 G_GNUC_INTERNAL void _priv_gst_toc_initialize (void);
131 G_GNUC_INTERNAL void _priv_gst_date_time_initialize (void);
133 /* cleanup functions called from gst_deinit(). */
134 G_GNUC_INTERNAL void _priv_gst_allocator_cleanup (void);
135 G_GNUC_INTERNAL void _priv_gst_caps_features_cleanup (void);
136 G_GNUC_INTERNAL void _priv_gst_caps_cleanup (void);
138 /* Private registry functions */
140 gboolean _priv_gst_registry_remove_cache_plugins (GstRegistry *registry);
142 G_GNUC_INTERNAL void _priv_gst_registry_cleanup (void);
144 gboolean _gst_plugin_loader_client_run (void);
146 G_GNUC_INTERNAL GstPlugin * _priv_gst_plugin_load_file_for_registry (const gchar *filename,
147 GstRegistry * registry,
150 /* Used in GstBin for manual state handling */
151 G_GNUC_INTERNAL void _priv_gst_element_state_changed (GstElement *element,
152 GstState oldstate, GstState newstate, GstState pending);
154 /* used in both gststructure.c and gstcaps.c; numbers are completely made up */
155 #define STRUCTURE_ESTIMATED_STRING_LEN(s) (16 + gst_structure_n_fields(s) * 22)
156 #define FEATURES_ESTIMATED_STRING_LEN(s) (16 + gst_caps_features_get_size(s) * 14)
159 gboolean priv_gst_structure_append_to_gstring (const GstStructure * structure,
162 gboolean priv__gst_structure_append_template_to_gstring (GQuark field_id,
167 void priv_gst_caps_features_append_to_gstring (const GstCapsFeatures * features, GString *s);
170 gboolean priv_gst_structure_parse_name (gchar * str, gchar **start, gchar ** end, gchar ** next);
172 gboolean priv_gst_structure_parse_fields (gchar *str, gchar ** end, GstStructure *structure);
174 /* used in gstvalue.c and gststructure.c */
176 #define GST_WRAPPED_PTR_FORMAT "p\aa"
179 gchar *priv_gst_string_take_and_wrap (gchar * s);
181 /* registry cache backends */
183 gboolean priv_gst_registry_binary_read_cache (GstRegistry * registry, const char *location);
186 gboolean priv_gst_registry_binary_write_cache (GstRegistry * registry, GList * plugins, const char *location);
190 void __gst_element_factory_add_static_pad_template (GstElementFactory * elementfactory,
191 GstStaticPadTemplate * templ);
194 void __gst_element_factory_add_interface (GstElementFactory * elementfactory,
195 const gchar * interfacename);
197 /* used in gstvalue.c and gststructure.c */
198 #define GST_ASCII_IS_STRING(c) (g_ascii_isalnum((c)) || ((c) == '_') || \
199 ((c) == '-') || ((c) == '+') || ((c) == '/') || ((c) == ':') || \
202 /* This is only meant for internal uses */
204 gint __gst_date_time_compare (const GstDateTime * dt1, const GstDateTime * dt2);
207 gchar * __gst_date_time_serialize (GstDateTime * datetime, gboolean with_usecs);
209 /* Non-static, for access from the testsuite, but not for external use */
211 _priv_gst_do_linear_regression (GstClockTime *times, guint n,
212 GstClockTime * m_num, GstClockTime * m_denom, GstClockTime * b,
213 GstClockTime * xbase, gdouble * r_squared);
215 /* For use in gstdebugutils */
217 GstCapsFeatures * __gst_caps_get_features_unchecked (const GstCaps * caps, guint idx);
219 #ifndef GST_DISABLE_REGISTRY
220 /* Secret variable to initialise gst without registry cache */
221 GST_EXPORT gboolean _gst_disable_registry_cache;
224 /* provide inline gst_g_value_get_foo_unchecked(), used in gststructure.c */
225 #define DEFINE_INLINE_G_VALUE_GET_UNCHECKED(ret_type,name_type,v_field) \
226 static inline ret_type \
227 gst_g_value_get_##name_type##_unchecked (const GValue *value) \
229 return value->data[0].v_field; \
232 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gboolean,boolean,v_int)
233 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gint,int,v_int)
234 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(guint,uint,v_uint)
235 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gint64,int64,v_int64)
236 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(guint64,uint64,v_uint64)
237 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gfloat,float,v_float)
238 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(gdouble,double,v_double)
239 DEFINE_INLINE_G_VALUE_GET_UNCHECKED(const gchar *,string,v_pointer)
242 /*** debugging categories *****************************************************/
244 #ifndef GST_REMOVE_GST_DEBUG
246 GST_EXPORT GstDebugCategory *GST_CAT_GST_INIT;
247 GST_EXPORT GstDebugCategory *GST_CAT_MEMORY;
248 GST_EXPORT GstDebugCategory *GST_CAT_PARENTAGE;
249 GST_EXPORT GstDebugCategory *GST_CAT_STATES;
250 GST_EXPORT GstDebugCategory *GST_CAT_SCHEDULING;
251 GST_EXPORT GstDebugCategory *GST_CAT_BUFFER;
252 GST_EXPORT GstDebugCategory *GST_CAT_BUFFER_LIST;
253 GST_EXPORT GstDebugCategory *GST_CAT_BUS;
254 GST_EXPORT GstDebugCategory *GST_CAT_CAPS;
255 GST_EXPORT GstDebugCategory *GST_CAT_CLOCK;
256 GST_EXPORT GstDebugCategory *GST_CAT_ELEMENT_PADS;
257 GST_EXPORT GstDebugCategory *GST_CAT_PADS;
258 GST_EXPORT GstDebugCategory *GST_CAT_PERFORMANCE;
259 GST_EXPORT GstDebugCategory *GST_CAT_PIPELINE;
260 GST_EXPORT GstDebugCategory *GST_CAT_PLUGIN_LOADING;
261 GST_EXPORT GstDebugCategory *GST_CAT_PLUGIN_INFO;
262 GST_EXPORT GstDebugCategory *GST_CAT_PROPERTIES;
263 GST_EXPORT GstDebugCategory *GST_CAT_NEGOTIATION;
264 GST_EXPORT GstDebugCategory *GST_CAT_REFCOUNTING;
265 GST_EXPORT GstDebugCategory *GST_CAT_ERROR_SYSTEM;
266 GST_EXPORT GstDebugCategory *GST_CAT_EVENT;
267 GST_EXPORT GstDebugCategory *GST_CAT_MESSAGE;
268 GST_EXPORT GstDebugCategory *GST_CAT_PARAMS;
269 GST_EXPORT GstDebugCategory *GST_CAT_CALL_TRACE;
270 GST_EXPORT GstDebugCategory *GST_CAT_SIGNAL;
271 GST_EXPORT GstDebugCategory *GST_CAT_PROBE;
272 GST_EXPORT GstDebugCategory *GST_CAT_REGISTRY;
273 GST_EXPORT GstDebugCategory *GST_CAT_QOS;
274 GST_EXPORT GstDebugCategory *GST_CAT_META;
275 GST_EXPORT GstDebugCategory *GST_CAT_LOCKING;
276 GST_EXPORT GstDebugCategory *GST_CAT_CONTEXT;
278 /* Categories that should be completely private to
279 * libgstreamer should be done like this: */
280 #define GST_CAT_POLL _priv_GST_CAT_POLL
281 extern GstDebugCategory *_priv_GST_CAT_POLL;
283 #define GST_CAT_PROTECTION _priv_GST_CAT_PROTECTION
284 extern GstDebugCategory *_priv_GST_CAT_PROTECTION;
286 extern GstClockTime _priv_gst_start_time;
290 #define GST_CAT_GST_INIT NULL
291 #define GST_CAT_AUTOPLUG NULL
292 #define GST_CAT_AUTOPLUG_ATTEMPT NULL
293 #define GST_CAT_PARENTAGE NULL
294 #define GST_CAT_STATES NULL
295 #define GST_CAT_SCHEDULING NULL
296 #define GST_CAT_DATAFLOW NULL
297 #define GST_CAT_BUFFER NULL
298 #define GST_CAT_BUFFER_LIST NULL
299 #define GST_CAT_BUS NULL
300 #define GST_CAT_CAPS NULL
301 #define GST_CAT_CLOCK NULL
302 #define GST_CAT_ELEMENT_PADS NULL
303 #define GST_CAT_PADS NULL
304 #define GST_CAT_PERFORMANCE NULL
305 #define GST_CAT_PIPELINE NULL
306 #define GST_CAT_PLUGIN_LOADING NULL
307 #define GST_CAT_PLUGIN_INFO NULL
308 #define GST_CAT_PROPERTIES NULL
309 #define GST_CAT_NEGOTIATION NULL
310 #define GST_CAT_REFCOUNTING NULL
311 #define GST_CAT_ERROR_SYSTEM NULL
312 #define GST_CAT_EVENT NULL
313 #define GST_CAT_MESSAGE NULL
314 #define GST_CAT_PARAMS NULL
315 #define GST_CAT_CALL_TRACE NULL
316 #define GST_CAT_SIGNAL NULL
317 #define GST_CAT_PROBE NULL
318 #define GST_CAT_REGISTRY NULL
319 #define GST_CAT_QOS NULL
320 #define GST_CAT_TYPES NULL
321 #define GST_CAT_POLL NULL
322 #define GST_CAT_META NULL
323 #define GST_CAT_LOCKING NULL
324 #define GST_CAT_CONTEXT NULL
325 #define GST_CAT_PROTECTION NULL
329 #ifdef GST_DISABLE_GST_DEBUG
330 /* for _gst_element_error_printf */
331 #define __gst_vasprintf __gst_info_fallback_vasprintf
332 int __gst_vasprintf (char **result, char const *format, va_list args);
335 /**** objects made opaque until the private bits have been made private ****/
338 #include <time.h> /* time_t */
339 #include <sys/types.h> /* off_t */
340 #include <sys/stat.h> /* off_t */
342 typedef struct _GstPluginPrivate GstPluginPrivate;
350 GstPluginDesc *orig_desc;
353 gchar * basename; /* base name (non-dir part) of plugin path */
355 GModule * module; /* contains the module if plugin is loaded */
359 gboolean registered; /* TRUE when the registry has seen a filename
360 * that matches the plugin's basename */
362 GstPluginPrivate *priv;
364 gpointer _gst_reserved[GST_PADDING];
367 struct _GstPluginClass {
368 GstObjectClass object_class;
371 gpointer _gst_reserved[GST_PADDING];
374 struct _GstPluginFeature {
381 const gchar *plugin_name;
382 GstPlugin *plugin; /* weak ref */
385 gpointer _gst_reserved[GST_PADDING];
388 struct _GstPluginFeatureClass {
389 GstObjectClass parent_class;
392 gpointer _gst_reserved[GST_PADDING];
395 #include "gsttypefind.h"
397 struct _GstTypeFindFactory {
398 GstPluginFeature feature;
401 GstTypeFindFunction function;
406 GDestroyNotify user_data_notify;
408 gpointer _gst_reserved[GST_PADDING];
411 struct _GstTypeFindFactoryClass {
412 GstPluginFeatureClass parent;
415 gpointer _gst_reserved[GST_PADDING];
418 struct _GstTracerFactory {
419 GstPluginFeature feature;
426 GDestroyNotify user_data_notify;
429 gpointer _gst_reserved[GST_PADDING];
432 struct _GstTracerFactoryClass {
433 GstPluginFeatureClass parent;
436 gpointer _gst_reserved[GST_PADDING];
439 struct _GstElementFactory {
440 GstPluginFeature parent;
442 GType type; /* unique GType of element or 0 if not loaded */
446 GList * staticpadtemplates; /* GstStaticPadTemplate list */
447 guint numpadtemplates;
449 /* URI interface stuff */
451 gchar ** uri_protocols;
453 GList * interfaces; /* interface type names this element implements */
456 gpointer _gst_reserved[GST_PADDING];
459 struct _GstElementFactoryClass {
460 GstPluginFeatureClass parent_class;
462 gpointer _gst_reserved[GST_PADDING];
465 struct _GstDeviceProviderFactory {
466 GstPluginFeature feature;
469 GType type; /* unique GType the device factory or 0 if not loaded */
471 volatile GstDeviceProvider *provider;
474 gpointer _gst_reserved[GST_PADDING];
477 struct _GstDeviceProviderFactoryClass {
478 GstPluginFeatureClass parent;
481 gpointer _gst_reserved[GST_PADDING];
484 /* privat flag used by GstBus / GstMessage */
485 #define GST_MESSAGE_FLAG_ASYNC_DELIVERY (GST_MINI_OBJECT_FLAG_LAST << 0)
488 #endif /* __GST_PRIVATE_H__ */