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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2005-2011 Richard Hughes <richard@hughsie.com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __GPMCOMMON_H
+#define __GPMCOMMON_H
+
+#include <glib.h>
+#include <libupower-glib/upower.h>
+
+G_BEGIN_DECLS
+
+/* UPower helpers */
+gchar *gpm_get_timestring (guint time);
+
+/* Power helpers */
+gboolean gsd_power_is_hardware_a_vm (void);
+guint gsd_power_enable_screensaver_watchdog (void);
+void reset_idletime (void);
+
+/* Backlight helpers */
+
+/* on ACPI machines we have 4-16 levels, on others it's ~150 */
+#define BRIGHTNESS_STEP_AMOUNT(max) ((max) < 20 ? 1 : (max) / 20)
+
+#define ABS_TO_PERCENTAGE(min, max, value) gsd_power_backlight_abs_to_percentage(min, max, value)
+#define PERCENTAGE_TO_ABS(min, max, value) gsd_power_backlight_percentage_to_abs(min, max, value)
+
+int gsd_power_backlight_abs_to_percentage (int min, int max, int value);
+int gsd_power_backlight_percentage_to_abs (int min, int max, int value);
+
+/* RandR helpers */
+void watch_external_monitor (GnomeRRScreen *screen);
+gboolean external_monitor_is_connected (GnomeRRScreen *screen);
+
+/* Sound helpers */
+void play_loop_start (guint *id);
+void play_loop_stop (guint *id);
+
+G_END_DECLS
+
+#endif /* __GPMCOMMON_H */