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>
33 #include <asm/atomic.h>
36 #include <gst/gsttrace.h>
37 #include <gst/gsttypes.h>
44 #endif /* __cplusplus */
46 extern GType _gst_object_type;
48 #define GST_TYPE_OBJECT (_gst_object_type)
49 # define GST_IS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_OBJECT))
50 # define GST_IS_OBJECT_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_OBJECT))
52 #define GST_OBJECT_CAST(obj) ((GstObject*)(obj))
53 #define GST_OBJECT_CLASS_CAST(klass) ((GstObjectClass*)(klass))
55 #ifdef GST_TYPE_PARANOID
56 # define GST_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_OBJECT, GstObject))
57 # define GST_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_OBJECT, GstObjectClass))
59 # define GST_OBJECT GST_OBJECT_CAST
60 # define GST_OBJECT_CLASS GST_OBJECT_CLASS_CAST
63 /*typedef struct _GstObject GstObject; */
64 /*typedef struct _GstObjectClass GstObjectClass; */
71 GST_OBJECT_FLAG_LAST = 4,
78 /* have to have a refcount for the object */
85 /* locking for all sorts of things (like the refcount) */
87 /* this objects parent */
93 /* signal_object is used to signal to the whole class */
94 struct _GstObjectClass {
95 GObjectClass parent_class;
97 gchar *path_string_separator;
98 GObject *signal_object;
101 void (*parent_set) (GstObject *object, GstObject *parent);
102 #ifndef GST_DISABLE_LOADSAVE_REGISTRY
103 void (*object_saved) (GstObject *object, xmlNodePtr parent);
106 /* functions go here */
107 void (*destroy) (GstObject *object);
109 #ifndef GST_DISABLE_LOADSAVE_REGISTRY
110 xmlNodePtr (*save_thyself) (GstObject *object, xmlNodePtr parent);
111 void (*restore_thyself) (GstObject *object, xmlNodePtr self);
115 #define GST_FLAGS(obj) (GST_OBJECT_CAST (obj)->flags)
116 #define GST_FLAG_IS_SET(obj,flag) (GST_FLAGS (obj) & (1<<(flag)))
117 #define GST_FLAG_SET(obj,flag) G_STMT_START{ (GST_FLAGS (obj) |= (1<<(flag))); }G_STMT_END
118 #define GST_FLAG_UNSET(obj,flag) G_STMT_START{ (GST_FLAGS (obj) &= ~(1<<(flag))); }G_STMT_END
120 #define GST_OBJECT_NAME(obj) (const gchar*)(((GstObject *)(obj))->name)
121 #define GST_OBJECT_PARENT(obj) (((GstObject *)(obj))->parent)
123 #define GST_OBJECT_DESTROYED(obj) (GST_FLAG_IS_SET (obj, GST_DESTROYED))
124 #define GST_OBJECT_FLOATING(obj) (GST_FLAG_IS_SET (obj, GST_FLOATING))
126 /* CR1: object locking - GObject 2.0 doesn't have threadsafe locking */
127 #define GST_LOCK(obj) (g_mutex_lock(GST_OBJECT_CAST(obj)->lock))
128 #define GST_TRYLOCK(obj) (g_mutex_trylock(GST_OBJECT_CAST(obj)->lock))
129 #define GST_UNLOCK(obj) (g_mutex_unlock(GST_OBJECT_CAST(obj)->lock))
130 #define GST_GET_LOCK(obj) (GST_OBJECT_CAST(obj)->lock)
133 /* normal GObject stuff */
134 GType gst_object_get_type (void);
137 void gst_object_set_name (GstObject *object, const gchar *name);
138 const gchar* gst_object_get_name (GstObject *object);
140 /* parentage routines */
141 void gst_object_set_parent (GstObject *object, GstObject *parent);
142 GstObject* gst_object_get_parent (GstObject *object);
143 void gst_object_unparent (GstObject *object);
145 gboolean gst_object_check_uniqueness (GList *list, const gchar *name);
147 #ifndef GST_DISABLE_LOADSAVE_REGISTRY
148 xmlNodePtr gst_object_save_thyself (GstObject *object, xmlNodePtr parent);
149 void gst_object_restore_thyself (GstObject *object, xmlNodePtr self);
151 #pragma GCC poison gst_object_save_thyself
152 #pragma GCC poison gst_object_restore_thyself
156 GstObject * gst_object_ref (GstObject *object);
157 void gst_object_unref (GstObject *object);
158 void gst_object_sink (GstObject *object);
159 /* destroying an object */
160 void gst_object_destroy (GstObject *object);
162 /* printing out the 'path' of the object */
163 gchar * gst_object_get_path_string (GstObject *object);
165 guint gst_class_signal_connect (GstObjectClass *klass,
170 #ifndef GST_DISABLE_LOADSAVE_REGISTRY
171 void gst_class_signal_emit_by_name (GstObject *object,
175 #pragma GCC poison gst_class_signal_emit_by_name
181 #endif /* __cplusplus */
184 #endif /* __GST_OBJECT_H__ */