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/* GStreamer
*
* Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net>
*
* gstcontrolbinding.h: 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_CONTROL_BINDING_H__
#define __GST_CONTROL_BINDING_H__
#include <gst/gstconfig.h>
#include <glib-object.h>
#include <gst/gstcontrolsource.h>
G_BEGIN_DECLS
#define GST_TYPE_CONTROL_BINDING \
(gst_control_binding_get_type())
#define GST_CONTROL_BINDING(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CONTROL_BINDING,GstControlBinding))
#define GST_CONTROL_BINDING_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CONTROL_BINDING,GstControlBindingClass))
#define GST_IS_CONTROL_BINDING(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CONTROL_BINDING))
#define GST_IS_CONTROL_BINDING_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CONTROL_BINDING))
#define GST_CONTROL_BINDING_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CONTOL_SOURCE, GstControlBindingClass))
typedef struct _GstControlBinding GstControlBinding;
typedef struct _GstControlBindingClass GstControlBindingClass;
/**
* GstControlBindingConvert:
* @self: the #GstControlBinding 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 (* GstControlBindingConvert) (GstControlBinding *self, gdouble src_value, GValue *dest_value);
/**
* GstControlBinding:
* @name: name of the property of this binding
*
* The instance structure of #GstControlBinding.
*/
struct _GstControlBinding {
GstObject parent;
/*< public >*/
gchar *name; /* name of the property */
GParamSpec *pspec; /* GParamSpec for this property */
/*< private >*/
GstObject *object; /* GstObject owning the property
* (== parent when bound) */
gboolean disabled;
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstControlBindingClass:
* @parent_class: Parent class
* @convert: Class method to convert control-values
*
* The class structure of #GstControlBinding.
*/
struct _GstControlBindingClass
{
GstObjectClass parent_class;
/* virtual methods */
gboolean (* sync_values) (GstControlBinding *self, GstObject *object, GstClockTime timestamp, GstClockTime last_sync);
GValue * (* get_value) (GstControlBinding *self, GstClockTime timestamp);
gboolean (* get_value_array) (GstControlBinding *self, GstClockTime timestamp,GstClockTime interval, guint n_values, gpointer values);
gboolean (* get_g_value_array) (GstControlBinding *self, GstClockTime timestamp,GstClockTime interval, guint n_values, GValue *values);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
#define GST_CONTROL_BINDING_PSPEC(cb) (((GstControlBinding *) cb)->pspec)
GType gst_control_binding_get_type (void);
/* Functions */
gboolean gst_control_binding_sync_values (GstControlBinding * self, GstObject *object,
GstClockTime timestamp, GstClockTime last_sync);
GValue * gst_control_binding_get_value (GstControlBinding *binding,
GstClockTime timestamp);
gboolean gst_control_binding_get_value_array (GstControlBinding *binding, GstClockTime timestamp,
GstClockTime interval, guint n_values, gpointer values);
gboolean gst_control_binding_get_g_value_array (GstControlBinding *binding, GstClockTime timestamp,
GstClockTime interval, guint n_values, GValue *values);
void gst_control_binding_set_disabled (GstControlBinding * self, gboolean disabled);
gboolean gst_control_binding_is_disabled (GstControlBinding * self);
G_END_DECLS
#endif /* __GST_CONTROL_BINDING_H__ */
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