mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-15 13:53:19 +00:00
120 lines
4.6 KiB
C
120 lines
4.6 KiB
C
/* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, 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;
|
|
|
|
/* FIXME(2.0): remove, this is unused */
|
|
typedef void (* GstControlBindingConvert) (GstControlBinding *binding, gdouble src_value, GValue *dest_value);
|
|
|
|
/**
|
|
* GstControlBinding:
|
|
* @name: name of the property of this binding
|
|
* @pspec: #GParamSpec for this property
|
|
*
|
|
* The instance structure of #GstControlBinding.
|
|
*/
|
|
struct _GstControlBinding {
|
|
GstObject parent;
|
|
|
|
/*< public >*/
|
|
gchar *name;
|
|
GParamSpec *pspec;
|
|
|
|
/*< private >*/
|
|
GstObject *object; /* GstObject owning the property
|
|
* (== parent when bound) */
|
|
gboolean disabled;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
/**
|
|
* GstControlBindingClass:
|
|
* @parent_class: Parent class
|
|
* @sync_values: implementation for updating the target values
|
|
* @get_value: implementation to fetch a single control-value
|
|
* @get_value_array: implementation to fetch a series of control-values
|
|
* @get_g_value_array: implementation to fetch a series of control-values
|
|
* as g_values
|
|
*
|
|
* The class structure of #GstControlBinding.
|
|
*/
|
|
|
|
struct _GstControlBindingClass
|
|
{
|
|
GstObjectClass parent_class;
|
|
|
|
/*< public >*/
|
|
gboolean (* sync_values) (GstControlBinding *binding, GstObject *object, GstClockTime timestamp, GstClockTime last_sync);
|
|
GValue * (* get_value) (GstControlBinding *binding, GstClockTime timestamp);
|
|
gboolean (* get_value_array) (GstControlBinding *binding, GstClockTime timestamp,GstClockTime interval, guint n_values, gpointer values);
|
|
gboolean (* get_g_value_array) (GstControlBinding *binding, 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 * binding, 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 * binding, gboolean disabled);
|
|
gboolean gst_control_binding_is_disabled (GstControlBinding * binding);
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_CONTROL_BINDING_H__ */
|