Index: navit/Makefile.am
===================================================================
--- navit/Makefile.am	(revision 3313)
+++ navit/Makefile.am	(working copy)
@@ -26,6 +26,10 @@
 AM_CPPFLAGS = -I$(top_srcdir)/navit/fib-1.1 @NAVIT_CFLAGS@ @ZLIB_CFLAGS@ -DPREFIX=\"@prefix@\" -DLIBDIR=\"@libdir@\" -DMODULE=navit
 BUILT_SOURCES = version.h navit_config.h
 
+if USE_OSSO
+    AM_CPPFLAGS += @LIBOSSO_CFLAGS@
+endif
+
 if BIN_NAVIT
   bin_PROGRAMS = navit
 endif
@@ -42,6 +46,10 @@
   lib@LIBNAVIT@_la_LIBADD += -Lsupport/libc -lsupport_libc
 endif
 
+if USE_OSSO
+    lib@LIBNAVIT@_la_LIBADD += @LIBOSSO_LIBS@
+endif 
+
 pkgdata_DATA = navit.xml
 
 EXTRA_DIST = navit_shipped.xml navit.dtd
@@ -121,6 +129,9 @@
   navit_LDADD += -lgdi32 -lcomctl32 -lwinmm
 endif
 
+if USE_OSSO
+    navit_LDADD += @LIBOSSO_CFLAGS@
+endif
 
 resource.rsc: $(top_srcdir)/navit/gui/win32/resources/resource.rc
 	$(WINDRES) -I $(top_srcdir)/navit/gui/win32/resources $(top_srcdir)/navit/gui/win32/resources/resource.rc resource.rsc
Index: navit/navit.c
===================================================================
--- navit/navit.c	(revision 3313)
+++ navit/navit.c	(working copy)
@@ -63,6 +63,10 @@
 #include "sunriset.h"
 #include "bookmarks.h"
 
+#ifdef HAVE_OSSO
+#include "libosso.h"
+#endif
+
 /**
  * @defgroup navit the navit core instance. navit is the object containing nearly everything: A set of maps, one or more vehicle, a graphics object for rendering the map, a gui object for displaying the user interface, a route object, a navigation object and so on. Be warned that it is theoretically possible to have more than one navit object
  * @{
@@ -142,6 +146,9 @@
 	int flags;
 		 /* 1=No graphics ok */
 		 /* 2=No gui ok */
+#ifdef HAVE_OSSO
+	osso_context_t *osso_context; 
+#endif
 };
 
 struct gui *main_loop_gui;
@@ -702,7 +709,50 @@
 	{"fmt_coordinates",command_cast(navit_cmd_fmt_coordinates)},
 };
 	
+#ifdef HAVE_OSSO
+static void 
+navit_osso_display_on(struct navit *this_) 
+{ 
+    osso_return_t err; 
+    err=osso_display_blanking_pause(this_->osso_context); 
+    dbg(1,"Unblank result: ", err == OSSO_OK ? "Ok" : (err == OSSO_ERROR ? "Error" : "Invalid context")); 
+}
 
+static gboolean 
+osso_cb_hw_state_idle(osso_hw_state_t *state) 
+{ 
+    dbg(0,"(inact=%d, save=%d, shut=%d, memlow=%d, state=%d)\n", 
+            state->system_inactivity_ind, 
+            state->save_unsaved_data_ind, state->shutdown_ind, 
+            state->memory_low_ind, state->sig_device_mode_ind); 
+
+    if(state->shutdown_ind) 
+    { 
+	/* we  are going  down, down,  down */ 
+        navit_destroy(global_navit); 
+        exit(1); 
+    } 
+
+    g_free(state); 
+
+    return FALSE;
+} 
+
+/** 
+ * * Handle osso events 
+ * * @param state Osso hardware state 
+ * * @param  data ptr to private data 
+ * * @returns nothing 
+ **/ 
+static void 
+osso_cb_hw_state(osso_hw_state_t *state, gpointer data) 
+{ 
+    osso_hw_state_t *state_copy = g_new(osso_hw_state_t, 1); 
+    memcpy(state_copy, state, sizeof(osso_hw_state_t)); 
+    g_idle_add((GSourceFunc)osso_cb_hw_state_idle, state_copy); 
+} 
+#endif /* HAVE_OSSO */
+
 struct navit *
 navit_new(struct attr *parent, struct attr **attrs)
 {
@@ -753,7 +803,19 @@
 	command_add_table(this_->attr_cbl, commands, sizeof(commands)/sizeof(struct command_table), this_);
 
 	this_->messages = messagelist_new(attrs);
-	
+
+#ifdef HAVE_OSSO
+	dbg(1,"Installing osso context for org.navit_project.navit\n"); 
+        this_->osso_context = osso_initialize("org.navit_project.navit",VERSION, TRUE, NULL); 
+        if(this_->osso_context == NULL) { 
+    	    dbg(0, "error initiating osso context\n"); 
+        } 
+        osso_hw_set_event_cb(this_->osso_context, NULL, osso_cb_hw_state, NULL); 
+        
+        /* add callback to unblank screen on gps event */ 
+        navit_add_callback(this_, callback_new_attr_1(callback_cast(navit_osso_display_on), attr_position_coord_geo, this_)); 
+#endif /* HAVE_OSSO */
+
 	return this_;
 }
 
@@ -2324,6 +2386,11 @@
 void
 navit_destroy(struct navit *this_)
 {
+
+#ifdef HAVE_OSSO
+	osso_deinitialize(this_->osso_context);
+#endif /* HAVE_OSSO */
+
 	/* TODO: destroy objects contained in this_ */
 	if (this_->vehicle)
 		vehicle_destroy(this_->vehicle->vehicle);
Index: configure.in
===================================================================
--- configure.in	(revision 3313)
+++ configure.in	(working copy)
@@ -218,6 +218,15 @@
 		], [
 		AC_MSG_RESULT(no)
 	])
+        PKG_CHECK_MODULES(LIBOSSO, libosso, [ 
+	        AC_DEFINE(HAVE_OSSO, 1, [Have the osso library]) 
+	        AC_SUBST(OSSO_CFLAGS) 
+                AC_SUBST(OSSO_LIBS) 
+                enable_osso=yes
+                ], [ 
+                enable_osso=no
+                AC_MSG_RESULT(no) 
+        ])
 	if test x"${enable_hildon}" = xyes ; then
 		AC_DEFINE(USE_HILDON, 1, [Build with maemo/hildon support])
 		AC_SUBST(HILDON_CFLAGS)
@@ -225,6 +234,7 @@
 	fi
 fi
 AM_CONDITIONAL(USE_HILDON, test "${enable_hildon}" = "xyes")
+AM_CONDITIONAL(USE_OSSO, [ test "$enable_osso" = "yes" ])
 
 AC_ARG_ENABLE(garmin, [  --disable-garmin             disable garmin support], USE_GARMIN=$enableval, USE_GARMIN=yes)