167 lines
5.5 KiB
C
167 lines
5.5 KiB
C
/* GStreamer
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* Copyright (C) 2005 Stefan Kost <ensonic@users.sf.net>
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*
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* gstchildproxy.h: interface header for multi child elements
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_CHILD_PROXY_H__
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#define __GST_CHILD_PROXY_H__
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#include <glib-object.h>
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_CHILD_PROXY (gst_child_proxy_get_type ())
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#define GST_CHILD_PROXY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CHILD_PROXY, GstChildProxy))
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#define GST_IS_CHILD_PROXY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CHILD_PROXY))
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#define GST_CHILD_PROXY_GET_INTERFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_CHILD_PROXY, GstChildProxyInterface))
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/**
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* GstChildProxy:
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*
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* Opaque #GstChildProxy data structure.
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*/
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typedef struct _GstChildProxy GstChildProxy; /* dummy object */
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typedef struct _GstChildProxyInterface GstChildProxyInterface;
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/**
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* GstChildProxyInterface:
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* @parent: parent interface type.
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*
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* #GstChildProxy interface.
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*/
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struct _GstChildProxyInterface
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{
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GTypeInterface parent;
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/* methods */
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/**
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* GstChildProxyInterface.get_child_by_name:
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* @parent: the #GstChildProxy
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* @name: the name of the child to fetch
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*
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* Fetch a child object by name
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*
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* Returns: (transfer full) (nullable): the child object
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*/
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GObject * (*get_child_by_name) (GstChildProxy * parent, const gchar * name);
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/**
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* GstChildProxyInterface.get_child_by_index:
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* @parent: the #GstChildProxy
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* @index: the index of the child to fetch
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*
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* Fetch a child object by index
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*
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* Returns: (transfer full) (nullable): the child object
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*/
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GObject * (*get_child_by_index) (GstChildProxy * parent, guint index);
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/**
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* GstChildProxyInterface.get_children_count:
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* @parent: the #GstChildProxy
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*
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* Get the number of children in @parent
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*
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* Returns: the number of children
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*/
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guint (*get_children_count) (GstChildProxy * parent);
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/*< private >*/
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/* signals */
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/**
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* GstChildProxyInterface.child_added:
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* @parent: the #GstChildProxy
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* @child: the child object
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* @name: the name of the child object
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*
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* Called when @child is added to @parent
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*/
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void (*child_added) (GstChildProxy * parent, GObject * child, const gchar * name);
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/**
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* GstChildProxyInterface.child_removed:
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* @parent: the #GstChildProxy
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* @child: the child object
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* @name: the name of the child object
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*
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* Called when @child is removed from @parent
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*/
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void (*child_removed) (GstChildProxy * parent, GObject * child, const gchar * name);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GST_API
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GType gst_child_proxy_get_type (void);
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GST_API
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GObject * gst_child_proxy_get_child_by_name (GstChildProxy * parent, const gchar * name);
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GST_API
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GObject * gst_child_proxy_get_child_by_name_recurse (GstChildProxy * child_proxy,
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const gchar *name);
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GST_API
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guint gst_child_proxy_get_children_count (GstChildProxy * parent);
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GST_API
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GObject * gst_child_proxy_get_child_by_index (GstChildProxy * parent, guint index);
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GST_API
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gboolean gst_child_proxy_lookup (GstChildProxy *object, const gchar *name,
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GObject **target, GParamSpec **pspec);
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GST_API
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void gst_child_proxy_get_property (GstChildProxy * object, const gchar *name,
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GValue *value);
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GST_API
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void gst_child_proxy_get_valist (GstChildProxy * object,
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const gchar * first_property_name,
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va_list var_args);
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GST_API
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void gst_child_proxy_get (GstChildProxy * object,
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const gchar * first_property_name,
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...) G_GNUC_NULL_TERMINATED;
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GST_API
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void gst_child_proxy_set_property (GstChildProxy * object, const gchar *name,
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const GValue *value);
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GST_API
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void gst_child_proxy_set_valist (GstChildProxy* object,
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const gchar * first_property_name,
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va_list var_args);
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GST_API
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void gst_child_proxy_set (GstChildProxy * object,
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const gchar * first_property_name,
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...) G_GNUC_NULL_TERMINATED;
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GST_API
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void gst_child_proxy_child_added (GstChildProxy * parent, GObject * child,
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const gchar *name);
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GST_API
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void gst_child_proxy_child_removed (GstChildProxy * parent, GObject * child,
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const gchar *name);
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G_END_DECLS
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#endif /* __GST_CHILD_PROXY_H__ */
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