os: add RGB888 pixel format

repos/os/include/os/pixel_rgb888.h

@@ -0,0 +1,26 @@
+/*
+ * \brief  Template specializations for the RGB888 pixel format
+ * \author Norman Feske
+ * \date   2014-08-14
+ */
+
+/*
+ * Copyright (C) 2014 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _INCLUDE__OS__PIXEL_RGB888_H_
+#define _INCLUDE__OS__PIXEL_RGB888_H_
+
+#include <os/pixel_rgba.h>
+
+namespace Genode {
+
+	typedef Pixel_rgba<unsigned long, Surface_base::RGB888,
+	                  0xff0000, 16, 0xff00, 8, 0xff, 0, 0, 0>
+	        Pixel_rgb888;
+}
+
+#endif /* _INCLUDE__OS__PIXEL_RGB888_H_ */

repos/os/include/os/surface.h

@@ -37,7 +37,7 @@ class Genode::Surface_base
 		typedef Genode::Rect<>  Rect;
 		typedef Genode::Color   Color;
 
-		enum Pixel_format { UNKNOWN, RGB565 };
+		enum Pixel_format { UNKNOWN, RGB565, RGB888 };
 
 		struct Flusher
 		{