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3eb4896435
Allows proxying the control interface from one property on one GstObject to another property (of the same type) in another GstObject. E.g. in a parent-child relationship, one may need to gst_object_sync_values() on the child and have a binding (set elsewhere) on the parent update the value. Note: that this doesn't solve GObject property forwarding and must be taken care of by the implementation manually or using GBinding. https://bugzilla.gnome.org/show_bug.cgi?id=774657
84 lines
2.8 KiB
C
84 lines
2.8 KiB
C
/*
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* GStreamer
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* Copyright (C) 2016 Matthew Waters <matthew@centricular.com>
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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_PROXY_CONTROL_BINDING_H__
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#define __GST_PROXY_CONTROL_BINDING_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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GType gst_proxy_control_binding_get_type (void);
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#define GST_TYPE_PROXY_CONTROL_BINDING (gst_proxy_control_binding_get_type())
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#define GST_PROXY_CONTROL_BINDING(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PROXY_CONTROL_BINDING,GstProxyControlBinding))
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#define GST_PROXY_CONTROL_BINDING_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PROXY_CONTROL_BINDING,GstProxyControlBindingClass))
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#define GST_IS_PROXY_CONTROL_BINDING(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PROXY_CONTROL_BINDING))
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#define GST_IS_PROXY_CONTROL_BINDING_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PROXY_CONTROL_BINDING))
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#define GST_PROXY_CONTROL_BINDING_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CONTOL_SOURCE, GstProxyControlBindingClass))
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typedef struct _GstProxyControlBinding GstProxyControlBinding;
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typedef struct _GstProxyControlBindingClass GstProxyControlBindingClass;
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/**
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* GstProxyControlBinding:
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*
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* Opaque #GstProxyControlBinding struct
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*/
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struct _GstProxyControlBinding
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{
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/* <private> */
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GstControlBinding parent;
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GWeakRef ref_object;
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gchar *property_name;
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gpointer _padding[GST_PADDING];
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};
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/**
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* GstProxyControlBindingClass:
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*
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* Opaque #GstProxyControlBindingClass struct
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*/
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struct _GstProxyControlBindingClass
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{
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/* <private> */
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GstControlBindingClass parent_class;
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gpointer _padding[GST_PADDING];
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};
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GstControlBinding * gst_proxy_control_binding_new (GstObject * object,
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const gchar * property_name,
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GstObject * ref_object,
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const gchar * ref_property_name);
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#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstProxyControlBinding, gst_object_unref)
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#endif
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G_END_DECLS
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#endif /* __GST_PROXY_CONTROL_BINDING_H__ */
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