mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-15 22:01:27 +00:00
79 lines
3 KiB
C
79 lines
3 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstinterface.h: Declarations of interface stuff
|
|
*
|
|
* 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_IMPLEMENTS_INTERFACE_H__
|
|
#define __GST_IMPLEMENTS_INTERFACE_H__
|
|
|
|
#include <gst/gstelement.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_IMPLEMENTS_INTERFACE \
|
|
(gst_implements_interface_get_type ())
|
|
#define GST_IMPLEMENTS_INTERFACE(obj) \
|
|
(GST_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_IMPLEMENTS_INTERFACE, \
|
|
GstImplementsInterface))
|
|
#define GST_IMPLEMENTS_INTERFACE_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_IMPLEMENTS_INTERFACE, \
|
|
GstImplementsInterfaceClass))
|
|
#define GST_IS_IMPLEMENTS_INTERFACE(obj) \
|
|
(GST_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_IMPLEMENTS_INTERFACE))
|
|
#define GST_IS_IMPLEMENTS_INTERFACE_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_IMPLEMENTS_INTERFACE))
|
|
#define GST_IMPLEMENTS_INTERFACE_GET_CLASS(inst) \
|
|
(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_IMPLEMENTS_INTERFACE, \
|
|
GstImplementsInterfaceClass))
|
|
|
|
typedef struct _GstImplementsInterface GstImplementsInterface;
|
|
|
|
/* This small extra virtual function is here to provide an
|
|
* interface functionality on a per-instance basis rather
|
|
* than a per-class basis, which is the case for glib.
|
|
*/
|
|
typedef struct _GstImplementsInterfaceClass {
|
|
GTypeInterface parent;
|
|
|
|
/* virtual functions */
|
|
gboolean (* supported) (GstImplementsInterface *iface,
|
|
GType iface_type);
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
} GstImplementsInterfaceClass;
|
|
|
|
#define GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_CAST(obj, type, cast_t) \
|
|
((cast_t *) gst_implements_interface_cast ((obj), (type)))
|
|
#define GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_TYPE(obj, type) \
|
|
(gst_implements_interface_check ((obj), (type)))
|
|
|
|
GType gst_implements_interface_get_type (void);
|
|
|
|
/* wrapper functions to check for functionality implementation */
|
|
gboolean gst_element_implements_interface (GstElement *element,
|
|
GType iface_type);
|
|
gpointer gst_implements_interface_cast (gpointer from,
|
|
GType type);
|
|
gboolean gst_implements_interface_check (gpointer from,
|
|
GType type);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_IMPLEMENTS_INTERFACE_H__ */
|