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115 lines
4.7 KiB
C
115 lines
4.7 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_INTERFACE(obj) \
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(G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_PROPERTY_PROBE, GstPropertyProbeInterface))
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/**
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* GstPropertyProbe:
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*
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* Opaque #GstPropertyProbe data structure.
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*/
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typedef struct _GstPropertyProbe GstPropertyProbe; /* dummy typedef */
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typedef struct _GstPropertyProbeInterface GstPropertyProbeInterface;
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/**
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* GstPropertyProbeInterface:
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* @iface: parent interface type.
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* @probe_needed: default signal handler
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* @get_properties: virtual method to get list of probable properties
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* @needs_probe: virtual method to tell if probe need update
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* @probe_property: virtual method to probe a property
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* @get_values: virtual method to get probe results for a property
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*
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* #GstPropertyProbe interface.
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*/
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struct _GstPropertyProbeInterface {
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GTypeInterface iface;
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/* signals */
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void (*probe_needed) (GstPropertyProbe *probe,
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const GParamSpec *pspec);
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/* virtual functions */
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const GList * (*get_properties) (GstPropertyProbe *probe);
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gboolean (*needs_probe) (GstPropertyProbe *probe,
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guint prop_id,
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const GParamSpec *pspec);
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void (*probe_property) (GstPropertyProbe *probe,
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guint prop_id,
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const GParamSpec *pspec);
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GValueArray * (*get_values) (GstPropertyProbe *probe,
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guint prop_id,
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const GParamSpec *pspec);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_property_probe_get_type (void);
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/* virtual class function wrappers */
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/* returns list of GParamSpecs */
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const GList * gst_property_probe_get_properties (GstPropertyProbe *probe);
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const GParamSpec *gst_property_probe_get_property (GstPropertyProbe *probe,
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const gchar *name);
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/* probe one property */
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void gst_property_probe_probe_property (GstPropertyProbe *probe,
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const GParamSpec *pspec);
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void gst_property_probe_probe_property_name (GstPropertyProbe *probe,
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const gchar *name);
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/* do we need a probe? */
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gboolean gst_property_probe_needs_probe (GstPropertyProbe *probe,
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const GParamSpec *pspec);
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gboolean gst_property_probe_needs_probe_name (GstPropertyProbe *probe,
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const gchar *name);
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/* returns list of GValues */
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GValueArray * gst_property_probe_get_values (GstPropertyProbe *probe,
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const GParamSpec *pspec);
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GValueArray * gst_property_probe_get_values_name (GstPropertyProbe *probe,
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const gchar *name);
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/* sugar */
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GValueArray * gst_property_probe_probe_and_get_values (GstPropertyProbe *probe,
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const GParamSpec *pspec);
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GValueArray * gst_property_probe_probe_and_get_values_name (GstPropertyProbe *probe,
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const gchar *name);
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G_END_DECLS
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#endif /* __GST_PROPERTY_PROBE_H__ */
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