gstreamer/gst-libs/gst/propertyprobe/propertyprobe.h
David Schleef 06fdc56290 First attempt (actually third) at a property probing interface
Original commit message from CVS:
First attempt (actually third) at a property probing interface
2003-10-30 02:32:00 +00:00

73 lines
2.6 KiB
C

/* GStreamer PropertyProbe
* Copyright (C) 2003 David A. Schleef <ds@schleef.org>
*
* property_probe.h: property_probe interface design
*
* 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_PROPERTY_PROBE_H__
#define __GST_PROPERTY_PROBE_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_PROPERTY_PROBE \
(gst_property_probe_get_type ())
#define GST_PROPERTY_PROBE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PROPERTY_PROBE, GstPropertyProbe))
#define GST_IS_PROPERTY_PROBE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PROPERTY_PROBE))
#define GST_PROPERTY_PROBE_GET_IFACE(obj) \
(G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_PROPERTY_PROBE, GstPropertyProbeInterface))
typedef struct _GstPropertyProbe GstPropertyProbe; /* dummy typedef */
typedef struct _GstPropertyProbeInterface {
GTypeInterface klass;
/* signals */
void (*need_probe) (GstPropertyProbe *property_probe, const gchar *property);
/* virtual functions */
gchar ** (*get_list) (GstElement *property_probe);
void (*probe_property) (GstElement *property_probe, const GParamSpec *property);
gchar ** (*get_property_info) (GstElement *property_probe,
const GParamSpec *property);
gboolean (*is_probed) (GstElement *element, const GParamSpec *property);
GST_CLASS_PADDING
} GstPropertyProbeInterface;
GType gst_property_probe_get_type (void);
/* virtual class function wrappers */
gchar ** gst_property_probe_get_list (GstElement *element);
void gst_property_probe_probe_property (GstElement *element,
const gchar *property);
gchar ** gst_property_probe_get_property_info (GstElement *element,
const gchar *property);
gboolean gst_property_probe_is_probed (GstElement *element,
const gchar *property);
/* utility functions */
gchar ** gst_property_probe_get_possibilities (GstElement *element,
const gchar *property);
G_END_DECLS
#endif /* __GST_PROPERTY_PROBE_H__ */