add navigation interface

Original commit message from CVS:
add navigation interface
This commit is contained in:
David Schleef 2003-09-27 03:16:28 +00:00
parent 4de1f66adb
commit b3c8d416a4
3 changed files with 167 additions and 0 deletions

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lib_LTLIBRARIES = libgstnavigation.la
libgstnavigation_la_SOURCES = navigation.c
libgstnavigationincludedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/navigation
libgstnavigationinclude_HEADERS = navigation.h
libgstnavigation_la_LIBADD =
libgstnavigation_la_CFLAGS = $(GST_CFLAGS) $(GST_OPT_CFLAGS)
libgstnavigation_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)

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/* GStreamer Navigation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* navigation.c: navigation design virtual class function wrappers
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/navigation/navigation.h>
static void gst_navigation_class_init (GstNavigationClass *klass);
GType
gst_navigation_get_type (void)
{
static GType gst_navigation_type = 0;
if (!gst_navigation_type) {
static const GTypeInfo gst_navigation_info = {
sizeof (GstNavigationClass),
(GBaseInitFunc) gst_navigation_class_init,
NULL,
NULL,
NULL,
NULL,
0,
0,
NULL,
};
gst_navigation_type = g_type_register_static (G_TYPE_INTERFACE,
"GstNavigation",
&gst_navigation_info, 0);
g_type_interface_add_prerequisite (gst_navigation_type,
GST_TYPE_INTERFACE);
}
return gst_navigation_type;
}
static void
gst_navigation_class_init (GstNavigationClass *klass)
{
/* default virtual functions */
klass->send_event = NULL;
}
void
gst_navigation_send_event (GstNavigation *navigation, GstCaps *caps)
{
GstNavigationClass *klass = GST_NAVIGATION_GET_CLASS (navigation);
if (klass->send_event) {
return klass->send_event (navigation, caps);
}
}
void
gst_navigation_send_key_event (GstNavigation *navigation, const char *key)
{
gst_navigation_send_event (navigation, GST_CAPS_NEW ("key_event",
"application/x-gst-navigation",
"key", GST_PROPS_STRING (key)));
}
void
gst_navigation_send_mouse_event (GstNavigation *navigation, double x,
double y)
{
gst_navigation_send_event (navigation, GST_CAPS_NEW ("mouse_event",
"application/x-gst-navigation",
"pointer_x", GST_PROPS_FLOAT (x),
"pointer_y", GST_PROPS_FLOAT (y)));
}

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/* GStreamer Navigation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2003 David A. Schleef <ds@schleef.org>
*
* navigation.h: navigation 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_NAVIGATION_H__
#define __GST_NAVIGATION_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_NAVIGATION \
(gst_navigation_get_type ())
#define GST_NAVIGATION(obj) \
(GST_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_NAVIGATION, GstNavigation))
#define GST_NAVIGATION_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_NAVIGATION, GstNavigationClass))
#define GST_IS_NAVIGATION(obj) \
(GST_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_NAVIGATION))
#define GST_IS_NAVIGATION_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_NAVIGATION))
#define GST_NAVIGATION_GET_CLASS(inst) \
(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_NAVIGATION, GstNavigationClass))
typedef struct _GstNavigation GstNavigation;
typedef struct _GstNavigationClass {
GTypeInterface klass;
/* virtual functions */
void (*send_event) (GstNavigation *navigation, GstCaps *caps);
} GstNavigationClass;
GType gst_navigation_get_type (void);
/* virtual class function wrappers */
void gst_navigation_send_event (GstNavigation *navigation, GstCaps *caps);
void gst_navigation_send_key_event (GstNavigation *navigation, const char *key);
void gst_navigation_send_mouse_event (GstNavigation *navigation, double x,
double y);
G_END_DECLS
#endif /* __GST_NAVIGATION_H__ */