2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
5 * gstobject.h: Header for base GstObject
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., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
24 #ifndef __GST_OBJECT_H__
25 #define __GST_OBJECT_H__
27 #include <gst/gstconfig.h>
29 #include <glib-object.h> /* note that this gets wrapped in __GST_OBJECT_H__ */
30 #include <gst/gstmarshal.h>
32 #include <gst/gsttypes.h>
36 extern GType _gst_object_type;
38 #define GST_TYPE_OBJECT (_gst_object_type)
39 #define GST_IS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_OBJECT))
40 #define GST_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_OBJECT))
41 #define GST_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_OBJECT, GstObjectClass))
43 #define GST_OBJECT_CAST(obj) ((GstObject*)(obj))
44 #define GST_OBJECT_CLASS_CAST(klass) ((GstObjectClass*)(klass))
46 #ifdef GST_TYPE_PARANOID
47 # define GST_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_OBJECT, GstObject))
48 # define GST_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_OBJECT, GstObjectClass))
50 # define GST_OBJECT GST_OBJECT_CAST
51 # define GST_OBJECT_CLASS GST_OBJECT_CLASS_CAST
54 /* make sure we don't change the object size but stil make it compile
56 #ifdef GST_DISABLE_LOADSAVE_REGISTRY
57 #define xmlNodePtr gpointer
65 GST_OBJECT_FLAG_LAST = 4
73 /* locking for all sorts of things */
75 /* this object's parent */
80 gpointer _gst_reserved[GST_PADDING];
83 /* signal_object is used to signal to the whole class */
84 struct _GstObjectClass {
85 GObjectClass parent_class;
87 gchar *path_string_separator;
88 GObject *signal_object;
91 void (*parent_set) (GstObject *object, GstObject *parent);
92 void (*parent_unset) (GstObject *object, GstObject *parent);
93 void (*object_saved) (GstObject *object, xmlNodePtr parent);
94 void (*deep_notify) (GstObject *object, GstObject *orig, GParamSpec *pspec);
96 /* functions go here */
97 void (*destroy) (GstObject *object);
99 xmlNodePtr (*save_thyself) (GstObject *object, xmlNodePtr parent);
100 void (*restore_thyself) (GstObject *object, xmlNodePtr self);
102 gpointer _gst_reserved[GST_PADDING];
105 #define GST_FLAGS(obj) (GST_OBJECT_CAST (obj)->flags)
106 #define GST_FLAG_IS_SET(obj,flag) (GST_FLAGS (obj) & (1<<(flag)))
107 #define GST_FLAG_SET(obj,flag) G_STMT_START{ (GST_FLAGS (obj) |= (1<<(flag))); }G_STMT_END
108 #define GST_FLAG_UNSET(obj,flag) G_STMT_START{ (GST_FLAGS (obj) &= ~(1<<(flag))); }G_STMT_END
110 #define GST_OBJECT_NAME(obj) (const gchar*)(((GstObject *)(obj))->name)
111 #define GST_OBJECT_PARENT(obj) (((GstObject *)(obj))->parent)
113 #define GST_OBJECT_DESTROYED(obj) (GST_FLAG_IS_SET (obj, GST_DESTROYED))
114 #define GST_OBJECT_FLOATING(obj) (GST_FLAG_IS_SET (obj, GST_FLOATING))
116 /* CR1: object locking - GObject 2.0 doesn't have threadsafe locking */
117 #define GST_LOCK(obj) (g_mutex_lock(GST_OBJECT_CAST(obj)->lock))
118 #define GST_TRYLOCK(obj) (g_mutex_trylock(GST_OBJECT_CAST(obj)->lock))
119 #define GST_UNLOCK(obj) (g_mutex_unlock(GST_OBJECT_CAST(obj)->lock))
120 #define GST_GET_LOCK(obj) (GST_OBJECT_CAST(obj)->lock)
123 /* normal GObject stuff */
124 GType gst_object_get_type (void);
127 void gst_object_set_name (GstObject *object, const gchar *name);
128 G_CONST_RETURN gchar*
129 gst_object_get_name (GstObject *object);
131 /* parentage routines */
132 void gst_object_set_parent (GstObject *object, GstObject *parent);
133 GstObject* gst_object_get_parent (GstObject *object);
134 void gst_object_unparent (GstObject *object);
136 void gst_object_default_deep_notify (GObject *object, GstObject *orig,
137 GParamSpec *pspec, gchar **excluded_props);
139 gboolean gst_object_check_uniqueness (GList *list, const gchar *name);
141 #ifndef GST_DISABLE_LOADSAVE_REGISTRY
142 xmlNodePtr gst_object_save_thyself (GstObject *object, xmlNodePtr parent);
143 void gst_object_restore_thyself (GstObject *object, xmlNodePtr self);
145 #pragma GCC poison gst_object_save_thyself
146 #pragma GCC poison gst_object_restore_thyself
149 /* refcounting + life cycle */
150 GstObject * gst_object_ref (GstObject *object);
151 void gst_object_unref (GstObject *object);
152 void gst_object_sink (GstObject *object);
154 /* replace object pointer */
155 void gst_object_replace (GstObject **oldobj, GstObject *newobj);
157 /* printing out the 'path' of the object */
158 gchar * gst_object_get_path_string (GstObject *object);
160 guint gst_class_signal_connect (GstObjectClass *klass,
165 #ifndef GST_DISABLE_LOADSAVE_REGISTRY
166 void gst_class_signal_emit_by_name (GstObject *object,
170 #pragma GCC poison gst_class_signal_emit_by_name
176 #endif /* __GST_OBJECT_H__ */