/*

* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Device specific constants for palette storage.

*

*/

#ifndef __PALETTECONSTANTS_H__

#define __PALETTECONSTANTS_H__

/**

 * Palette switching support is not required in S60 3.x.

 * This switch disables palette switching. The code will be removed later.

 * You may ignore the rest of this header while this macro is defined.

 */

#define DISABLE_256_COLOR_PALETTE_SWITCHING

#ifndef DISABLE_256_COLOR_PALETTE_SWITCHING

/**

 * The palette code supports two modes of operation, configured with the feature flag

 * __PALETTE_INDEX_ADDRESS_FIXED.

 *

 * If the feature is defined (call it "fast" mode),

 * the palette index is stored in video memory and the video memory

 * address is hard coded.

 *

 * If the feature is undefined (call it "slow" mode) the palette index is stored in

 * video memory, but the video memory address is stored in TLS.

 *

 * This palette index is accessed a lot, so fast mode can have a positive

 * effect on performance.

 */

#ifdef __WINS__

// always turn __PALETTE_INDEX_ADDRESS_FIXED on in __WINS__

#undef __PALETTE_INDEX_ADDRESS_FIXED

#define __PALETTE_INDEX_ADDRESS_FIXED

#endif __WINS__

#ifdef __PALETTE_INDEX_ADDRESS_FIXED

#ifndef __WINS__

/**

 * This is the base address of the video memory for the screen.

 * This value is only used if the macro __PALETTE_INDEX_ADDRESS_FIXED is defined and

 * __WINS__ macro is undefined.

 */

#include <lcdbaseaddress.h>

#define DEVICE_VIDEO_ADDR			KLCDBaseAddress

/**

 * This is the maximum width of the screen.

 * This value is only used if the macro __PALETTE_INDEX_ADDRESS_FIXED is defined and

 * __WINS__ macro is undefined. 

 * Otherwise, the width is retrieved from the screen driver.

 */

#define DEVICE_SCREEN_WIDTH			176

/**

 * This is the maximum height of the screen.

 * This value is only used if the macro __PALETTE_INDEX_ADDRESS_FIXED is defined and

 * __WINS__ macro is undefined. 

 * Otherwise, the height is retrieved from the screen driver.

 */

#define DEVICE_SCREEN_HEIGHT		208

#endif

#endif // __PALETTE_INDEX_ADDRESS_FIXED

/**

 * The number of bytes used for each pixel of the screen.

 */

#define DEVICE_BYTES_PER_PIXEL		2

/**

 * The number of bytes of video memory reserved by the screen driver for other purposes.

 */

#define DEVICE_VIDEO_PALETTE_SIZE	32

#endif // DISABLE_256_COLOR_PALETTE_SWITCHING

#endif // __PALETTECONSTANTS_H__

// End of File