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/* GStreamer
*
* Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net>
*
* gstdirectcontrolbinding.h: Direct attachment for control sources
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_DIRECT_CONTROL_BINDING_H__
#define __GST_DIRECT_CONTROL_BINDING_H__
#include <gst/gstconfig.h>
#include <glib-object.h>
#include <gst/gstcontrolsource.h>
#include <gst/controller/controller-prelude.h>
G_BEGIN_DECLS
#define GST_TYPE_DIRECT_CONTROL_BINDING \
(gst_direct_control_binding_get_type())
#define GST_DIRECT_CONTROL_BINDING(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DIRECT_CONTROL_BINDING,GstDirectControlBinding))
#define GST_DIRECT_CONTROL_BINDING_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DIRECT_CONTROL_BINDING,GstDirectControlBindingClass))
#define GST_IS_DIRECT_CONTROL_BINDING(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DIRECT_CONTROL_BINDING))
#define GST_IS_DIRECT_CONTROL_BINDING_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DIRECT_CONTROL_BINDING))
#define GST_DIRECT_CONTROL_BINDING_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CONTOL_SOURCE, GstDirectControlBindingClass))
typedef struct _GstDirectControlBinding GstDirectControlBinding;
typedef struct _GstDirectControlBindingClass GstDirectControlBindingClass;
/**
* GstDirectControlBindingConvertValue:
* @self: the #GstDirectControlBinding instance
* @src_value: the value returned by the cotnrol source
* @dest_value: the target location
*
* Function to map a control-value to the target plain data type.
*/
typedef void (* GstDirectControlBindingConvertValue) (GstDirectControlBinding *self, gdouble src_value, gpointer dest_value);
/**
* GstDirectControlBindingConvertGValue:
* @self: the #GstDirectControlBinding instance
* @src_value: the value returned by the cotnrol source
* @dest_value: the target GValue
*
* Function to map a control-value to the target GValue.
*/
typedef void (* GstDirectControlBindingConvertGValue) (GstDirectControlBinding *self, gdouble src_value, GValue *dest_value);
/**
* GstDirectControlBinding:
* @name: name of the property of this binding
*
* The instance structure of #GstDirectControlBinding.
*/
struct _GstDirectControlBinding {
GstControlBinding parent;
/*< private >*/
GstControlSource *cs; /* GstControlSource for this property */
GValue cur_value;
gdouble last_value;
gint byte_size;
GstDirectControlBindingConvertValue convert_value;
GstDirectControlBindingConvertGValue convert_g_value;
union {
gpointer _gst_reserved[GST_PADDING];
struct {
gboolean want_absolute;
} abi;
} ABI;
};
/**
* GstDirectControlBindingClass:
* @parent_class: Parent class
* @convert: Class method to convert control-values
*
* The class structure of #GstDirectControlBinding.
*/
struct _GstDirectControlBindingClass
{
GstControlBindingClass parent_class;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GST_CONTROLLER_API
GType gst_direct_control_binding_get_type (void);
/* Functions */
GST_CONTROLLER_API
GstControlBinding * gst_direct_control_binding_new (GstObject * object, const gchar * property_name,
GstControlSource * cs);
GST_CONTROLLER_API
GstControlBinding * gst_direct_control_binding_new_absolute (GstObject * object, const gchar * property_name,
GstControlSource * cs);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDirectControlBinding, gst_object_unref)
G_END_DECLS
#endif /* __GST_DIRECT_CONTROL_BINDING_H__ */
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