add navigation interface

Original commit message from CVS:
add navigation interface

gst-libs/gst/navigation/Makefile.am

@@ -0,0 +1,10 @@
+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)

gst-libs/gst/navigation/navigation.c

@@ -0,0 +1,93 @@
+/* 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)));
+}
+
+

gst-libs/gst/navigation/navigation.h

@@ -0,0 +1,64 @@
+/* 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__ */