author | hgs |
Fri, 14 May 2010 18:43:44 -0500 | |
changeset 20 | 7e3786c5ed27 |
parent 16 | 8e837d1bf446 |
child 30 | 7e817e7e631c |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> |
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* 2000 Wim Taymans <wtay@chello.be> |
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* 2005 Wim Taymans <wim@fluendo.com> |
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* |
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* gstobject.h: Header for base GstObject |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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#ifndef __GST_OBJECT_H__ |
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#define __GST_OBJECT_H__ |
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#include <gst/gstconfig.h> |
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#include <glib-object.h> |
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G_BEGIN_DECLS |
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#define GST_TYPE_OBJECT (gst_object_get_type ()) |
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#define GST_IS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_OBJECT)) |
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#define GST_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_OBJECT)) |
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#define GST_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_OBJECT, GstObjectClass)) |
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#define GST_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_OBJECT, GstObject)) |
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#define GST_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_OBJECT, GstObjectClass)) |
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#define GST_OBJECT_CAST(obj) ((GstObject*)(obj)) |
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#define GST_OBJECT_CLASS_CAST(klass) ((GstObjectClass*)(klass)) |
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/* make sure we don't change the object size but still make it compile |
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* without libxml */ |
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#ifdef GST_DISABLE_LOADSAVE |
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#define GstXmlNodePtr gpointer |
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#else |
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#define GstXmlNodePtr xmlNodePtr |
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#endif |
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/** |
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* GstObjectFlags: |
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* @GST_OBJECT_DISPOSING: the object is been destroyed, don't use it anymore |
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* @GST_OBJECT_FLOATING: the object has a floating reference count (e.g. its |
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* not assigned to a bin) |
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* @GST_OBJECT_FLAG_LAST: subclasses can add additional flags starting from this flag |
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* |
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* The standard flags that an gstobject may have. |
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*/ |
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typedef enum |
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{ |
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GST_OBJECT_DISPOSING = (1<<0), |
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GST_OBJECT_FLOATING = (1<<1), |
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/* padding */ |
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GST_OBJECT_FLAG_LAST = (1<<4) |
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} GstObjectFlags; |
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/** |
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* GST_OBJECT_REFCOUNT: |
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* @obj: a #GstObject |
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* |
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* Get access to the reference count field of the object. |
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*/ |
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#define GST_OBJECT_REFCOUNT(obj) (((GObject*)(obj))->ref_count) |
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/** |
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* GST_OBJECT_REFCOUNT_VALUE: |
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* @obj: a #GstObject |
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* |
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* Get the reference count value of the object. |
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*/ |
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#define GST_OBJECT_REFCOUNT_VALUE(obj) g_atomic_int_get ((gint *) &GST_OBJECT_REFCOUNT(obj)) |
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/* we do a GST_OBJECT_CAST to avoid type checking, better call these |
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* function with a valid object! */ |
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/** |
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* GST_OBJECT_GET_LOCK: |
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* @obj: a #GstObject |
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* |
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* Acquire a reference to the mutex of this object. |
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*/ |
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#define GST_OBJECT_GET_LOCK(obj) (GST_OBJECT_CAST(obj)->lock) |
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/** |
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* GST_OBJECT_LOCK: |
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* @obj: a #GstObject to lock |
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* |
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* This macro will obtain a lock on the object, making serialization possible. |
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* It blocks until the lock can be obtained. |
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*/ |
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#define GST_OBJECT_LOCK(obj) g_mutex_lock(GST_OBJECT_GET_LOCK(obj)) |
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/** |
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* GST_OBJECT_TRYLOCK: |
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* @obj: a #Object. |
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* |
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* This macro will try to obtain a lock on the object, but will return with |
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* FALSE if it can't get it immediately. |
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*/ |
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#define GST_OBJECT_TRYLOCK(obj) g_mutex_trylock(GST_OBJECT_GET_LOCK(obj)) |
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108 |
/** |
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* GST_OBJECT_UNLOCK: |
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* @obj: a #GstObject to unlock. |
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* |
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* This macro releases a lock on the object. |
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*/ |
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#define GST_OBJECT_UNLOCK(obj) g_mutex_unlock(GST_OBJECT_GET_LOCK(obj)) |
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115 |
|
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|
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117 |
/** |
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* GST_OBJECT_NAME: |
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* @obj: a #GstObject |
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* |
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* Get the name of this object |
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*/ |
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#define GST_OBJECT_NAME(obj) (GST_OBJECT_CAST(obj)->name) |
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/** |
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* GST_OBJECT_PARENT: |
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* @obj: a #GstObject |
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* |
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* Get the parent of this object |
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*/ |
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#define GST_OBJECT_PARENT(obj) (GST_OBJECT_CAST(obj)->parent) |
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|
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|
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133 |
/** |
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* GST_OBJECT_FLAGS: |
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* @obj: a #GstObject |
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* |
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* This macro returns the entire set of flags for the object. |
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*/ |
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#define GST_OBJECT_FLAGS(obj) (GST_OBJECT_CAST (obj)->flags) |
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/** |
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* GST_OBJECT_FLAG_IS_SET: |
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* @obj: a #GstObject |
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* @flag: Flag to check for |
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* |
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* This macro checks to see if the given flag is set. |
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*/ |
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#define GST_OBJECT_FLAG_IS_SET(obj,flag) ((GST_OBJECT_FLAGS (obj) & (flag)) == (flag)) |
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/** |
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* GST_OBJECT_FLAG_SET: |
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* @obj: a #GstObject |
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* @flag: Flag to set |
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* |
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* This macro sets the given bits. |
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*/ |
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#define GST_OBJECT_FLAG_SET(obj,flag) (GST_OBJECT_FLAGS (obj) |= (flag)) |
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/** |
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* GST_OBJECT_FLAG_UNSET: |
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* @obj: a #GstObject |
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* @flag: Flag to set |
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* |
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* This macro usets the given bits. |
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*/ |
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#define GST_OBJECT_FLAG_UNSET(obj,flag) (GST_OBJECT_FLAGS (obj) &= ~(flag)) |
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|
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|
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/** |
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* GST_OBJECT_IS_DISPOSING: |
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* @obj: a #GstObject |
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* |
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* Check if the given object is beeing destroyed. |
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*/ |
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#define GST_OBJECT_IS_DISPOSING(obj) (GST_OBJECT_FLAG_IS_SET (obj, GST_OBJECT_DISPOSING)) |
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/** |
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* GST_OBJECT_IS_FLOATING: |
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* @obj: a #GstObject |
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* |
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* Check if the given object is floating (has no owner). |
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*/ |
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#define GST_OBJECT_IS_FLOATING(obj) (GST_OBJECT_FLAG_IS_SET (obj, GST_OBJECT_FLOATING)) |
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|
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typedef struct _GstObject GstObject; |
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typedef struct _GstObjectClass GstObjectClass; |
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|
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/** |
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* GstObject: |
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* @refcount: unused |
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* @lock: object LOCK |
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* @name: The name of the object |
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* @name_prefix: used for debugging |
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* @parent: this object's parent, weak ref |
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* @flags: use GST_OBJECT_IS_XXX macros to access the flags |
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* |
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* GStreamer base object class. |
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*/ |
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struct _GstObject { |
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GObject object; |
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|
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/*< public >*/ |
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gint refcount; |
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|
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/*< public >*/ /* with LOCK */ |
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GMutex *lock; /* object LOCK */ |
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gchar *name; /* object name */ |
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gchar *name_prefix; /* used for debugging */ |
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GstObject *parent; /* this object's parent, weak ref */ |
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guint32 flags; |
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/*< private >*/ |
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gpointer _gst_reserved; |
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}; |
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/** |
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* GST_CLASS_GET_LOCK: |
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* @obj: a #GstObjectClass |
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* |
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* This macro will return the class lock used to protect deep_notify signal |
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* emission on thread-unsafe glib versions (glib < 2.8). |
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*/ |
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#define GST_CLASS_GET_LOCK(obj) (GST_OBJECT_CLASS_CAST(obj)->lock) |
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/** |
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* GST_CLASS_LOCK: |
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* @obj: a #GstObjectClass |
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* |
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* Lock the class. |
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*/ |
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#define GST_CLASS_LOCK(obj) (g_static_rec_mutex_lock(GST_CLASS_GET_LOCK(obj))) |
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/** |
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* GST_CLASS_TRYLOCK: |
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* @obj: a #GstObjectClass |
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* |
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* Try to lock the class, returns TRUE if class could be locked. |
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*/ |
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#define GST_CLASS_TRYLOCK(obj) (g_static_rec_mutex_trylock(GST_CLASS_GET_LOCK(obj))) |
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/** |
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* GST_CLASS_UNLOCK: |
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* @obj: a #GstObjectClass |
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* |
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* Unlock the class. |
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*/ |
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#define GST_CLASS_UNLOCK(obj) (g_static_rec_mutex_unlock(GST_CLASS_GET_LOCK(obj))) |
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|
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/* |
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* GstObjectClass: |
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* |
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* @signal_object: is used to signal to the whole class |
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* @save_thyself: xml serialisation |
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* @restore_thyself: xml de-serialisation |
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*/ |
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struct _GstObjectClass { |
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GObjectClass parent_class; |
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gchar *path_string_separator; |
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GObject *signal_object; |
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GStaticRecMutex *lock; |
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|
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/* signals */ |
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void (*parent_set) (GstObject * object, GstObject * parent); |
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void (*parent_unset) (GstObject * object, GstObject * parent); |
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void (*object_saved) (GstObject * object, GstXmlNodePtr parent); |
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void (*deep_notify) (GstObject * object, GstObject * orig, GParamSpec * pspec); |
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|
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/*< public >*/ |
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/* virtual methods for subclasses */ |
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GstXmlNodePtr (*save_thyself) (GstObject * object, GstXmlNodePtr parent); |
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void (*restore_thyself) (GstObject * object, GstXmlNodePtr self); |
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/*< private >*/ |
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gpointer _gst_reserved[GST_PADDING]; |
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}; |
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/* normal GObject stuff */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GType gst_object_get_type (void); |
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/* name routines */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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gboolean gst_object_set_name (GstObject *object, const gchar *name); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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gchar* gst_object_get_name (GstObject *object); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_object_set_name_prefix (GstObject *object, const gchar *name_prefix); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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gchar* gst_object_get_name_prefix (GstObject *object); |
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/* parentage routines */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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gboolean gst_object_set_parent (GstObject *object, GstObject *parent); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstObject* gst_object_get_parent (GstObject *object); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
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void gst_object_unparent (GstObject *object); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
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gboolean gst_object_has_ancestor (GstObject *object, GstObject *ancestor); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
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|
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void gst_object_default_deep_notify (GObject *object, GstObject *orig, |
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GParamSpec *pspec, gchar **excluded_props); |
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|
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/* refcounting + life cycle */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
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gpointer gst_object_ref (gpointer object); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
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void gst_object_unref (gpointer object); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
16 | 345 |
void gst_object_ref_sink (gpointer object); |
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#endif |
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||
0
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void gst_object_sink (gpointer object); |
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|
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/* replace object pointer */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
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void gst_object_replace (GstObject **oldobj, GstObject *newobj); |
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|
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/* printing out the 'path' of the object */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
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gchar * gst_object_get_path_string (GstObject *object); |
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|
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/* misc utils */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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|
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gboolean gst_object_check_uniqueness (GList *list, const gchar *name); |
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|
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/* load/save */ |
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#ifndef GST_DISABLE_LOADSAVE |
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GstXmlNodePtr gst_object_save_thyself (GstObject *object, GstXmlNodePtr parent); |
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void gst_object_restore_thyself (GstObject *object, GstXmlNodePtr self); |
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#else |
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#if defined _GNUC_ && _GNUC_ >= 3 |
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#pragma GCC poison gst_object_save_thyself |
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#pragma GCC poison gst_object_restore_thyself |
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#endif |
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#endif |
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|
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/* class signal stuff */ |
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#ifdef __SYMBIAN32__ |
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386 |
IMPORT_C |
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#endif |
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|
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guint gst_class_signal_connect (GstObjectClass *klass, |
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const gchar *name, |
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gpointer func, |
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gpointer func_data); |
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|
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#ifndef GST_DISABLE_LOADSAVE |
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void gst_class_signal_emit_by_name (GstObject * object, |
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const gchar * name, |
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GstXmlNodePtr self); |
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#else |
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#if defined _GNUC_ && _GNUC_ >= 3 |
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#pragma GCC poison gst_class_signal_emit_by_name |
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#endif |
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#endif |
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403 |
|
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404 |
|
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G_END_DECLS |
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|
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#endif /* __GST_OBJECT_H__ */ |
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408 |