(width == 640 && height == 400 && bpp == 8) ||           (width == 640 && height == 480 && bpp == 8) ||           (width == 320 && height == 200 && bpp == 8))) {		SDL_SetError("Requested video mode is not supported");        return NULL;    }    if (current && current->pixels) {        free(current->pixels);        current->pixels = NULL;    }	if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) {		return(NULL);	}    /* Set up the new mode framebuffer */    if (bpp == 8) 	    current->flags = (SDL_FULLSCREEN|SDL_SWSURFACE|SDL_PREALLOC|SDL_HWPALETTE);     else // 12 bpp	    current->flags = (SDL_FULLSCREEN|SDL_SWSURFACE|SDL_PREALLOC); 	current->w = width;	current->h = height;    int numBytesPerPixel = ((bpp-1)>>3) + 1;   	current->pitch = numBytesPerPixel * width; // Number of bytes in scanline 	current->pixels = malloc(width * height * numBytesPerPixel);	memset(current->pixels, 0, width * height * numBytesPerPixel);	/* Set the blit function */	_this->UpdateRects = EPOC_DirectUpdate;    /* Must buffer height be shrinked to screen by 2 ? */    if (current->h >= 400)        Private->EPOC_ShrinkedHeight = ETrue;    /* Centralize game window on device screen  */    Private->EPOC_ScreenOffset = (Private->EPOC_ScreenSize.iWidth - current->w) / 2;	/* We're done */	return(current);}void RedrawWindowL(_THIS){    SDL_Rect fullScreen;    fullScreen.x = 0;    fullScreen.y = 0;    fullScreen.w = _this->screen->w;    fullScreen.h = _this->screen->h;#ifdef __WINS__	    TBitmapUtil lock(Private->EPOC_Bitmap);	        lock.Begin(TPoint(0,0)); // Lock bitmap heap	    Private->EPOC_WindowGc->Activate(Private->EPOC_WsWindow);#endif    if (fullScreen.w < Private->EPOC_ScreenSize.iWidth        && fullScreen.w < Private->EPOC_ScreenSize.iWidth) {        /* Draw blue stripes background */#ifdef __WINS__        TUint16* screenBuffer = (TUint16*)Private->EPOC_Bitmap->DataAddress();#else        TUint16* screenBuffer = (TUint16*)Private->EPOC_FrameBuffer;#endif        for (int y=0; y < Private->EPOC_ScreenSize.iHeight; y++) {            for (int x=0; x < Private->EPOC_ScreenSize.iWidth; x++) {                TUint16 color = ((x+y)>>1) & 0xf; /* Draw pattern */                *screenBuffer++ = color;            }        }    }    /* Tell the system that something has been drawn */	TRect  rect = TRect(Private->EPOC_WsWindow.Size());  	Private->EPOC_WsWindow.Invalidate(rect);#ifdef __WINS__	Private->EPOC_WsWindow.BeginRedraw(rect);	Private->EPOC_WindowGc->BitBlt(TPoint(), Private->EPOC_Bitmap);	Private->EPOC_WsWindow.EndRedraw();	Private->EPOC_WindowGc->Deactivate();    lock.End(); // Unlock bitmap heap	Private->EPOC_WsSession.Flush();#endif    /* Draw current buffer */    EPOC_DirectUpdate(_this, 1, &fullScreen);}/* We don't actually allow hardware surfaces other than the main one */static int EPOC_AllocHWSurface(_THIS, SDL_Surface *surface){	return(-1);}static void EPOC_FreeHWSurface(_THIS, SDL_Surface *surface){	return;}static int EPOC_LockHWSurface(_THIS, SDL_Surface *surface){	return(0);}static void EPOC_UnlockHWSurface(_THIS, SDL_Surface *surface){	return;}static int EPOC_FlipHWSurface(_THIS, SDL_Surface *surface){	return(0);}static void EPOC_DirectUpdate(_THIS, int numrects, SDL_Rect *rects){    TInt focusWindowGroupId = Private->EPOC_WsSession.GetFocusWindowGroup();    if (focusWindowGroupId != Private->EPOC_WsWindowGroupID) {        /* Force focus window to redraw again for cleaning away SDL screen graphics */          TInt pos = Private->EPOC_WsWindowGroup.OrdinalPosition();        Private->EPOC_WsWindowGroup.SetOrdinalPosition(0, KMaxTInt);       	TRect  rect = TRect(Private->EPOC_WsWindow.Size());        Private->EPOC_WsWindow.Invalidate(rect);        Private->EPOC_WsWindowGroup.SetOrdinalPosition(pos, ECoeWinPriorityNormal);                /* If this is not the topmost window, wait here! Sleep for 1 second to give cpu to            multitasking and poll for being the topmost window.        */        while (Private->EPOC_WsSession.GetFocusWindowGroup() != Private->EPOC_WsWindowGroupID)            SDL_Delay(1000);        RedrawWindowL(_this);      }	TInt i;    TInt sourceNumBytesPerPixel = ((_this->screen->format->BitsPerPixel-1)>>3) + 1;       TInt targetNumBytesPerPixel = Private->EPOC_BytesPerPixel;       TInt fixedOffset = Private->EPOC_ScreenOffset;       TInt screenW = _this->screen->w;    TInt screenH = _this->screen->h;    TInt sourceScanlineLength = screenW;    if (Private->EPOC_ShrinkedHeight) {  /* simulate 400 pixel height in 200 pixel screen */          sourceScanlineLength <<= 1;         screenH >>= 1;    }    TInt targetScanlineLength = Private->EPOC_ScreenSize.iWidth;#ifdef __WINS__	TBitmapUtil lock(Private->EPOC_Bitmap);	    lock.Begin(TPoint(0,0)); // Lock bitmap heap	Private->EPOC_WindowGc->Activate(Private->EPOC_WsWindow);    TUint16* screenBuffer = (TUint16*)Private->EPOC_Bitmap->DataAddress();#else    TUint16* screenBuffer = (TUint16*)Private->EPOC_FrameBuffer;#endif	/* Render the rectangles in the list */	for ( i=0; i < numrects; ++i ) {        SDL_Rect rect2;        const SDL_Rect& currentRect = rects[i];        rect2.x = currentRect.x;        rect2.y = currentRect.y;        rect2.w = currentRect.w;        rect2.h = currentRect.h;        if (rect2.w <= 0 || rect2.h <= 0) /* sanity check */            continue;        if (Private->EPOC_ShrinkedHeight) {  /* simulate 400 pixel height in 200 pixel screen */                    rect2.y >>= 1;            if (!(rect2.h >>= 1))                 rect2.h = 1; // always at least 1 pixel height!        }        /* All variables are measured in pixels */        /* Check rects validity, i.e. upper and lower bounds */        TInt maxX = Min(screenW - 1, rect2.x + rect2.w - 1);        TInt maxY = Min(screenH - 1, rect2.y + rect2.h - 1);        if (maxX < 0 || maxY < 0) /* sanity check */            continue;        maxY = Min(maxY, 199);         TInt sourceRectWidth = maxX - rect2.x + 1;        TInt sourceRectWidthInBytes = sourceRectWidth * sourceNumBytesPerPixel;        TInt sourceRectHeight = maxY - rect2.y + 1;        TInt sourceStartOffset = rect2.x + rect2.y * sourceScanlineLength;        TInt targetStartOffset = fixedOffset + rect2.x + rect2.y * targetScanlineLength;                   // !! Nokia9210 native mode: 12 bpp --> 12 bpp        if (_this->screen->format->BitsPerPixel == 12) { 	        TUint16* bitmapLine = (TUint16*)_this->screen->pixels + sourceStartOffset;            TUint16* screenMemory = screenBuffer + targetStartOffset;            for(TInt y = 0 ; y < sourceRectHeight ; y++) {                __ASSERT_DEBUG(screenMemory < (screenBuffer                     + Private->EPOC_ScreenSize.iWidth * Private->EPOC_ScreenSize.iHeight),                     User::Panic(_L("SDL"), KErrCorrupt));                __ASSERT_DEBUG(screenMemory >= screenBuffer,                     User::Panic(_L("SDL"), KErrCorrupt));                __ASSERT_DEBUG(bitmapLine < ((TUint16*)_this->screen->pixels +                     + (_this->screen->w * _this->screen->h)),                     User::Panic(_L("SDL"), KErrCorrupt));                __ASSERT_DEBUG(bitmapLine >=  (TUint16*)_this->screen->pixels,                     User::Panic(_L("SDL"), KErrCorrupt));		        Mem::Copy(screenMemory, bitmapLine, sourceRectWidthInBytes);		        bitmapLine += sourceScanlineLength;		        screenMemory += targetScanlineLength;            }        }        // !! 256 color paletted mode: 8 bpp  --> 12 bpp        else { 	        TUint8* bitmapLine = (TUint8*)_this->screen->pixels + sourceStartOffset;            TUint16* screenMemory = screenBuffer + targetStartOffset;            for(TInt y = 0 ; y < sourceRectHeight ; y++) {                TUint8* bitmapPos = bitmapLine; /* 1 byte per pixel */                TUint16* screenMemoryLinePos = screenMemory; /* 2 bytes per pixel */                /* Convert each pixel from 256 palette to 4k color values */                for(TInt x = 0 ; x < sourceRectWidth ; x++) {                    __ASSERT_DEBUG(screenMemoryLinePos < (screenBuffer                         + (Private->EPOC_ScreenSize.iWidth * Private->EPOC_ScreenSize.iHeight)),                         User::Panic(_L("SDL"), KErrCorrupt));                    __ASSERT_DEBUG(screenMemoryLinePos >= screenBuffer,                         User::Panic(_L("SDL"), KErrCorrupt));                    __ASSERT_DEBUG(bitmapPos < ((TUint8*)_this->screen->pixels +                         + (_this->screen->w * _this->screen->h)),                         User::Panic(_L("SDL"), KErrCorrupt));                    __ASSERT_DEBUG(bitmapPos >= (TUint8*)_this->screen->pixels,                         User::Panic(_L("SDL"), KErrCorrupt));                    *screenMemoryLinePos = EPOC_HWPalette_256_to_4k[*bitmapPos];                    bitmapPos++;                    screenMemoryLinePos++;                }		        bitmapLine += sourceScanlineLength;		        screenMemory += targetScanlineLength;            }	    }    }        #ifdef __WINS__	TRect  rect = TRect(Private->EPOC_WsWindow.Size());	Private->EPOC_WsWindow.Invalidate(rect);	Private->EPOC_WsWindow.BeginRedraw(rect);	Private->EPOC_WindowGc->BitBlt(TPoint(), Private->EPOC_Bitmap);	Private->EPOC_WsWindow.EndRedraw();	Private->EPOC_WindowGc->Deactivate();    lock.End(); // Unlock bitmap heap	Private->EPOC_WsSession.Flush();#endif    /* Update virtual cursor */    //!!Private->EPOC_WsSession.SetPointerCursorPosition(Private->EPOC_WsSession.PointerCursorPosition());    return;}/* Note:  If we are terminated, this could be called in the middle of   another SDL video routine -- notably UpdateRects.*/void EPOC_VideoQuit(_THIS){	int i;	/* Free video mode lists */	for ( i=0; i<SDL_NUMMODES; ++i ) {		if ( Private->SDL_modelist[i] != NULL ) {			free(Private->SDL_modelist[i]);			Private->SDL_modelist[i] = NULL;		}	}	    if ( _this->screen && (_this->screen->flags & SDL_HWSURFACE) ) {		/* Direct screen access, no memory buffer */		_this->screen->pixels = NULL;	}    if (_this->screen && _this->screen->pixels) {        free(_this->screen->pixels);        _this->screen->pixels = NULL;    }    /* Free Epoc resources */    /* Disable events for me */	if (Private->EPOC_WsEventStatus != KRequestPending)		Private->EPOC_WsSession.EventReadyCancel();	if (Private->EPOC_RedrawEventStatus != KRequestPending)		Private->EPOC_WsSession.RedrawReadyCancel();    #ifdef __WINS__	delete Private->EPOC_Bitmap;	Private->EPOC_Bitmap = NULL;    #endif	if (Private->EPOC_WsWindow.WsHandle())		Private->EPOC_WsWindow.Close();	if (Private->EPOC_WsWindowGroup.WsHandle())		Private->EPOC_WsWindowGroup.Close();	delete Private->EPOC_WindowGc;	Private->EPOC_WindowGc = NULL;	delete Private->EPOC_WsScreen;	Private->EPOC_WsScreen = NULL;	if (Private->EPOC_WsSession.WsHandle())		Private->EPOC_WsSession.Close();}WMcursor *EPOC_CreateWMCursor(_THIS, Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y){	return (WMcursor *) 9210; // it's ok to return something unuseful but true}void EPOC_FreeWMCursor(_THIS, WMcursor *cursor){    /* Disable virtual cursor */    HAL::Set(HAL::EMouseState, HAL::EMouseState_Invisible);    Private->EPOC_WsSession.SetPointerCursorMode(EPointerCursorNone);}int EPOC_ShowWMCursor(_THIS, WMcursor *cursor){    if (cursor ==  (WMcursor *)9210) {        /* Enable virtual cursor */	    HAL::Set(HAL::EMouseState, HAL::EMouseState_Visible);	    Private->EPOC_WsSession.SetPointerCursorMode(EPointerCursorNormal);    }    else {        /* Disable virtual cursor */        HAL::Set(HAL::EMouseState, HAL::EMouseState_Invisible);        Private->EPOC_WsSession.SetPointerCursorMode(EPointerCursorNone);    }	return(1);}}; // extern "C"