graphicsdeviceinterface/screendriver/sgeneric/accelhard.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 12 Mar 2010 15:50:05 +0200
branchRCL_3
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// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include "GraphicsAccelerator.h"
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LOCAL_D const TGraphicsAcceleratorCaps HardwareAcceleratorCapabilities =
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{
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    sizeof(TGraphicsAcceleratorCaps),	//TInt iStructureSize;	// The size of this class
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    1,									//TInt iVersion;		// == 1 to specify current API
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    {0}									//Tint iVendorUid;		// Optional ID
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    // Default values of zero...
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};
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EXPORT_C CHardwareGraphicsAccelerator* CHardwareGraphicsAccelerator::NewL(RHardwareBitmap /*aBitmap*/)
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/** 
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Allocates and constructs an instance of a derived class and initialises its 
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capabilities.
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@param aBitmap The hardware bitmap for the accelerator to draw to.
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@return Pointer to the initialised graphics accelerator object.
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@see TGraphicsAcceleratorCaps::iDisplayModes 
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@leave KErrNoMemory There is no memory to allocate the graphics accelerator
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       KErrNotSupported There is no graphics accelerator supporting the display mode given by the bitmap parameter
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*/
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	{
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    User::Leave(KErrNotSupported) ;
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    return NULL ;
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	}
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EXPORT_C const TGraphicsAcceleratorCaps* CHardwareGraphicsAccelerator::GenericCapabilities()
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/** 
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Gets the generic capabilities of the accelerator, including which display modes 
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are supported for the bitmap passed to NewL().
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Generic capabilities apply to all hardware graphics accelerators on the device. 
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The function is static, so it can be used to find out the capabilities of 
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graphics accelerators before deciding on whether or not to create one.
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The CGraphicsAccelerator::Capabilities() function provides information about 
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the capabilities of a particular graphics accelerator.
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As capabilities may vary depending on the display mode of a bitmap, this method 
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should indicate as supported any features which are only available in some 
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display modes.
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@return Generic capabilities for hardware graphics accelerators. 
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*/
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	{
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    return &HardwareAcceleratorCapabilities ;
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	}
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