3 * Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net>
5 * gstdirectcontrolbinding.h: Direct attachment for control sources
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., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
23 #ifndef __GST_DIRECT_CONTROL_BINDING_H__
24 #define __GST_DIRECT_CONTROL_BINDING_H__
26 #include <gst/gstconfig.h>
28 #include <glib-object.h>
30 #include <gst/gstcontrolsource.h>
34 #define GST_TYPE_DIRECT_CONTROL_BINDING \
35 (gst_direct_control_binding_get_type())
36 #define GST_DIRECT_CONTROL_BINDING(obj) \
37 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DIRECT_CONTROL_BINDING,GstDirectControlBinding))
38 #define GST_DIRECT_CONTROL_BINDING_CLASS(klass) \
39 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DIRECT_CONTROL_BINDING,GstDirectControlBindingClass))
40 #define GST_IS_DIRECT_CONTROL_BINDING(obj) \
41 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DIRECT_CONTROL_BINDING))
42 #define GST_IS_DIRECT_CONTROL_BINDING_CLASS(klass) \
43 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DIRECT_CONTROL_BINDING))
44 #define GST_DIRECT_CONTROL_BINDING_GET_CLASS(obj) \
45 (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CONTOL_SOURCE, GstDirectControlBindingClass))
47 typedef struct _GstDirectControlBinding GstDirectControlBinding;
48 typedef struct _GstDirectControlBindingClass GstDirectControlBindingClass;
51 * GstDirectControlBindingConvertValue:
52 * @self: the #GstDirectControlBinding instance
53 * @src_value: the value returned by the cotnrol source
54 * @dest_value: the target location
56 * Function to map a control-value to the target plain data type.
58 typedef void (* GstDirectControlBindingConvertValue) (GstDirectControlBinding *self, gdouble src_value, gpointer dest_value);
61 * GstDirectControlBindingConvertGValue:
62 * @self: the #GstDirectControlBinding instance
63 * @src_value: the value returned by the cotnrol source
64 * @dest_value: the target GValue
66 * Function to map a control-value to the target GValue.
68 typedef void (* GstDirectControlBindingConvertGValue) (GstDirectControlBinding *self, gdouble src_value, GValue *dest_value);
71 * GstDirectControlBinding:
72 * @name: name of the property of this binding
74 * The instance structure of #GstDirectControlBinding.
76 struct _GstDirectControlBinding {
77 GstControlBinding parent;
80 GstControlSource *cs; /* GstControlSource for this property */
85 GstDirectControlBindingConvertValue convert_value;
86 GstDirectControlBindingConvertGValue convert_g_value;
89 gpointer _gst_reserved[GST_PADDING];
91 gboolean want_absolute;
97 * GstDirectControlBindingClass:
98 * @parent_class: Parent class
99 * @convert: Class method to convert control-values
101 * The class structure of #GstDirectControlBinding.
104 struct _GstDirectControlBindingClass
106 GstControlBindingClass parent_class;
109 gpointer _gst_reserved[GST_PADDING];
112 GType gst_direct_control_binding_get_type (void);
116 GstControlBinding * gst_direct_control_binding_new (GstObject * object, const gchar * property_name,
117 GstControlSource * cs);
119 GstControlBinding * gst_direct_control_binding_new_absolute (GstObject * object, const gchar * property_name,
120 GstControlSource * cs);
124 #endif /* __GST_DIRECT_CONTROL_BINDING_H__ */