/*

* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: Symbian offscreen GL context implementation

*

*/

/*!

 * \file

 * \brief Symbian offscreen GL context implementation

 */

#include "m3g_gl.h"

#include "m3g_defs.h"

#include <w32std.h>

#include <fbs.h>

//----------------------------------------------------------------------

// Private functions

//----------------------------------------------------------------------

static M3GPixelFormat m3gSymbianPixelFormat(TDisplayMode displayMode)

{

    switch (displayMode) {

    case EColor4K:

        return M3G_RGB4;

    case EColor64K:

        return M3G_RGB565;

    case EColor16M:

        return M3G_RGB8;

    case EColor16MU:

        return M3G_BGR8_32;

    case EColor16MA:    

        return M3G_BGRA8;

    case ERgb:

        return M3G_RGB8_32;

    default:

        return M3G_NO_FORMAT;

    }

}

//----------------------------------------------------------------------

// Internal functions

//----------------------------------------------------------------------

/*!

 * \brief

 */

M3Gbool m3gglLockNativeBitmap(M3GNativeBitmap bitmap,

                              M3Gubyte **ptr,

                              M3Gsizei *stride) 

{

    CFbsBitmap *fbm = (CFbsBitmap*) bitmap;

    fbm->LockHeap();

    *ptr = (M3Gubyte *) fbm->DataAddress();

    *stride = (M3Gsizei)

        CFbsBitmap::ScanLineLength(fbm->SizeInPixels().iWidth,

                                   fbm->DisplayMode());

    return M3G_TRUE;

}

/*!

 * \brief

 */

void m3gglReleaseNativeBitmap(M3GNativeBitmap bitmap) 

{    

    ((CFbsBitmap*)bitmap)->UnlockHeap();

}

/*!

 * \brief Queries properties of a native window

 */

extern "C" M3Gbool m3gglGetNativeBitmapParams(M3GNativeBitmap bitmap,

                                              M3GPixelFormat *format,

{

    CFbsBitmap *pBitmap = (CFbsBitmap *) bitmap;

    *format = m3gSymbianPixelFormat(pBitmap->DisplayMode());

    TSize size = pBitmap->SizeInPixels();

    *width = size.iWidth;

    *height = size.iHeight;

    return M3G_TRUE;

}

/*!

 * \brief Queries properties of a native window

 */

extern "C" M3Gbool m3gglGetNativeWindowParams(M3GNativeWindow wnd,

                                              M3GPixelFormat *format,

                                              M3Gint *width, M3Gint *height)

{

    RWindow *pWnd = (RWindow *) wnd;

    *format = m3gSymbianPixelFormat(pWnd->DisplayMode());

    TSize size = pWnd->Size();

    *width = size.iWidth;

    *height = size.iHeight;

    return M3G_TRUE;

}