From c186da6a66001e3de61d53212c708fd2e6cab5d2 Mon Sep 17 00:00:00 2001 From: David Schleef Date: Thu, 30 Oct 2003 02:32:00 +0000 Subject: First attempt (actually third) at a property probing interface Original commit message from CVS: First attempt (actually third) at a property probing interface --- gst-libs/gst/propertyprobe/propertyprobe.h | 73 ++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 gst-libs/gst/propertyprobe/propertyprobe.h (limited to 'gst-libs/gst/propertyprobe/propertyprobe.h') diff --git a/gst-libs/gst/propertyprobe/propertyprobe.h b/gst-libs/gst/propertyprobe/propertyprobe.h new file mode 100644 index 00000000..5fc9cf66 --- /dev/null +++ b/gst-libs/gst/propertyprobe/propertyprobe.h @@ -0,0 +1,73 @@ +/* GStreamer PropertyProbe + * Copyright (C) 2003 David A. Schleef + * + * 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 + +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__ */ -- cgit v1.2.1