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e8da19e8af
Original commit message from CVS: First attempt (actually third) at a property probing interface
73 lines
2.6 KiB
C
73 lines
2.6 KiB
C
/* GStreamer PropertyProbe
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* Copyright (C) 2003 David A. Schleef <ds@schleef.org>
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*
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* property_probe.h: property_probe interface design
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_PROPERTY_PROBE_H__
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#define __GST_PROPERTY_PROBE_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_PROPERTY_PROBE \
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(gst_property_probe_get_type ())
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#define GST_PROPERTY_PROBE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PROPERTY_PROBE, GstPropertyProbe))
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#define GST_IS_PROPERTY_PROBE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PROPERTY_PROBE))
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#define GST_PROPERTY_PROBE_GET_IFACE(obj) \
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(G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_PROPERTY_PROBE, GstPropertyProbeInterface))
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typedef struct _GstPropertyProbe GstPropertyProbe; /* dummy typedef */
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typedef struct _GstPropertyProbeInterface {
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GTypeInterface klass;
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/* signals */
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void (*need_probe) (GstPropertyProbe *property_probe, const gchar *property);
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/* virtual functions */
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gchar ** (*get_list) (GstElement *property_probe);
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void (*probe_property) (GstElement *property_probe, const GParamSpec *property);
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gchar ** (*get_property_info) (GstElement *property_probe,
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const GParamSpec *property);
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gboolean (*is_probed) (GstElement *element, const GParamSpec *property);
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GST_CLASS_PADDING
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} GstPropertyProbeInterface;
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GType gst_property_probe_get_type (void);
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/* virtual class function wrappers */
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gchar ** gst_property_probe_get_list (GstElement *element);
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void gst_property_probe_probe_property (GstElement *element,
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const gchar *property);
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gchar ** gst_property_probe_get_property_info (GstElement *element,
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const gchar *property);
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gboolean gst_property_probe_is_probed (GstElement *element,
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const gchar *property);
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/* utility functions */
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gchar ** gst_property_probe_get_possibilities (GstElement *element,
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const gchar *property);
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G_END_DECLS
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#endif /* __GST_PROPERTY_PROBE_H__ */
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