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diff --git a/Graphic_Equalizer_Original_Port/include/display_shared.hch b/Graphic_Equalizer_Original_Port/include/display_shared.hch
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+++ b/Graphic_Equalizer_Original_Port/include/display_shared.hch
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+/*! \file display_shared.hch
+ *
+ * \brief	Datastructures and defines for usage when interacting with the
+ *		display library.
+ *
+ * \section project Project information.
+ * Graphic Equalizer 2\n
+ * \author 
+ * \date 20041011
+ * \version 0.1
+ *
+ * \section copyright Copyright
+ * Copyright Š2004 Koninklijke Philips Electronics N.V. All rights reserved
+ *
+ * \section history Change history
+ * 20041011: \n	Initial version
+ *
+ ********************************************************************/
+ 
+#ifndef _DISPLAY_SHARED_HCH
+#define _DISPLAY_SHARED_HCH 1
+
+
+
+/*! \struct skindata_t
+ * \brief	This struct contains all area- dimensions and color information
+ *		for the skin.
+ */
+struct skindata_t {
+	/*! \struct skin_info_t
+	 * \brief	Structure containing the four boundry limits of an area and
+	 *		maximal two colors per area.
+	 */
+	struct skin_info_t {
+		unsigned 10 area_bottom;	/*!< lowest point registerd in the area */
+		unsigned 10 area_top;		/*!< highest point registerd in the area */
+		unsigned 10 area_left;		/*!< leftmost point registerd in the area */
+		unsigned 10 area_right;		/*!< rightmost point registerd in the area */
+		unsigned 24 color_primary;	/*!< primary color for this area */
+		unsigned 24 color_secondary;	/*!< optionally an area can have a second color */
+	};
+	struct skin_info_t waveform;	/*!< We store all information about the waveform area here. */
+	struct skin_info_t spectrum;	/*!< We store all information about the spectrum analyzer area here. */
+	struct skin_info_t volume;	/*!< We store all information about the volume control area here. */
+	struct skin_info_t equalizer;	/*!< We store all information about the equalizerbars here. */
+};
+
+
+
+#define AREA_WAVEFORM		0x01	/*!< Waveform area. */
+#define AREA_VOLUME_YAXIS	0x02	/*!< Volume control on the Y plane. */
+#define AREA_SPECTRUM_ANALYZER	0x03	/*!< Spectrum Analyzer area. */
+
+#define BUTTON_LOG		0x04	/*!< Logarithmic display button. */
+#define BUTTON_DEMO		0x05	/*!< Demo preset button. */
+#define BUTTON_RESET		0x06	/*!< Reset presets button. */
+
+#define BUTTON_PRESET_1		0x07	/*!< Button for switching to preset 1 */
+#define BUTTON_PRESET_2		0x08	/*!< Button for switching to preset 2 */
+#define BUTTON_PRESET_3		0x09	/*!< Button for switching to preset 3 */
+#define BUTTON_PRESET_4		0x0a	/*!< Button for switching to preset 4 */
+#define BUTTON_PRESET_5		0x0b	/*!< Button for switching to preset 5 */
+#define BUTTON_PRESET_6		0x0c	/*!< Button for switching to preset 6 */
+
+#define BUTTON_CONVEX_FULL	0x0d	/*!< / - \ 'Convex' mode Button*/
+#define BUTTON_CONVEX_HALF	0x0e	/*!< /\ 'Convex' mode Button  */
+#define BUTTON_PRECISE		0x0f	/*!< |  'Precise' selection Button  */
+#define BUTTON_CONCAVE_HALF	0x10	/*!< \/  'Concave' mode Button */
+#define BUTTON_CONCAVE_FULL	0x11	/*!< \ _ / 'Concave' mode Button */
+
+#define BUTTON_HELP		0x12	/*!< Button to display help screen. */
+#define BUTTON_MODE		0x13	/*!< Button to change operation mode. */
+
+#define AREA_EQUALIZER_MIN	0x80	/*!< First bar of the Equalizer Area. */
+#define AREA_EQUALIZER_MAX	0xff	/*!< Last bar of the Equalizer Area. */
+
+#else
+#error "ERROR file display_shared.hch multiple times included"
+#endif /* --- _DISPLAY_SHARED_HCH --- */
+