sl@0: // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // t_halattprovider.ldd Provides fake HAL attribute values on H4 platform for
sl@0: // advanced pointer event testing.
sl@0: // Fake values are listed in halFunction(TAny* aPtr, TInt aFunction, TAny* a1, TAny* a2).
sl@0: // Only some values from the group EHalGroupDigitiser are changed.
sl@0: // For not changed values from the group EHalGroupDigitiser the original HAL handler is called
sl@0: // (the one loaded before this kernel extension).
sl@0: // Original handler of EHalGroupDigitiser group must be registered in order
sl@0: // to run this kernel extension.
sl@0: // 
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @test
sl@0:  @internalComponent - Internal Symbian test code
sl@0: */
sl@0: 
sl@0: #include <kernel/kernel.h>
sl@0: #include <e32cmn.h>
sl@0: 
sl@0: static SHalEntry gOriginalHandler;
sl@0: static TUint8 gNumberOfPointers;
sl@0: 
sl@0: void InitialiseDigitiserHalData()
sl@0: 	{
sl@0: 	gNumberOfPointers = 6;
sl@0: 	}
sl@0: 
sl@0: LOCAL_C TInt halFunction(TAny* aPtr, TInt aFunction, TAny* a1, TAny* a2)
sl@0: 	{
sl@0: 	TInt r=KErrNone;
sl@0: 	THalFunc function = gOriginalHandler.iFunction;
sl@0: 	switch(aFunction)
sl@0: 		{
sl@0: 		case EDigitiserHal3DInfo:
sl@0: 			{
sl@0: 			// execute the original handler
sl@0: 			r = (*function)(aPtr, EDigitiserHal3DInfo, a1, a2);
sl@0: 			TBool receivedFullData = (r == KErrNone);
sl@0: 			if (r != KErrNone)
sl@0: 				{
sl@0: 				// try to get at least TDigitiserInfoV01
sl@0: 				r = (*function)(aPtr, EDigitiserHalXYInfo, a1, a2);
sl@0: 				if (r != KErrNone)
sl@0: 					{
sl@0: 					Kern::Printf("t_halattprovider error: original handler of EDigitiserHalXYInfo returned %d", r);
sl@0: 					return r;
sl@0: 					}
sl@0: 				}
sl@0: 			
sl@0: 			// read data created by the original handler
sl@0: 			TPckgBuf<TDigitiserInfoV02> vPckg;
sl@0: 			TDigitiserInfoV02& data = vPckg();
sl@0: 			
sl@0: 			Kern::KUDesGet(vPckg, *(TDes8*)a1);
sl@0: 			
sl@0: 			// modify the data with the new values
sl@0: 			vPckg.SetLength(sizeof(TDigitiserInfoV02));
sl@0: 			data.iPressureSupported=1;
sl@0: 			data.iZRange=-100; // max proximity
sl@0: 			data.iProximityStep=5;
sl@0: 			data.iMaxPointers=8;
sl@0: 			data.iNumberOfPointers=gNumberOfPointers;
sl@0: 			data.iMaxPressure=5000;
sl@0: 			data.iPressureStep=500;
sl@0: 			
sl@0: 			if (!receivedFullData)
sl@0: 				{
sl@0: 				// original handler has provided only TDigitiserInfoV01, so we have to
sl@0: 				// fill all fields of TDigitiserInfoV02
sl@0: 				data.iThetaSupported=0;
sl@0: 				data.iPhiSupported=0;
sl@0: 				data.iAlphaSupported=0;
sl@0: 				}
sl@0: 			
sl@0: 			// return the data
sl@0: 			Kern::InfoCopy(*(TDes8*)a1, vPckg);
sl@0: 			
sl@0: 			break;
sl@0: 			}
sl@0: 		case EDigitiserHal3DPointer:
sl@0: 			{
sl@0: 			// Return value 1 for EPointer3D
sl@0: 			TBool ret = ETrue; 
sl@0: 			kumemput32(a1,&ret,sizeof(ret));
sl@0: 			break;
sl@0: 			}
sl@0: 		case EDigitiserHalSetNumberOfPointers:
sl@0: 			// Set request for EPointerNumberOfPointers
sl@0: 			
sl@0: 			// this line should be a correct implementation of this function but was not tested
sl@0: 			//kumemget32(&gNumberOfPointers,a1,sizeof(gNumberOfPointers));
sl@0: 			Kern::Printf("t_halattprovider error: attempt to use not implemented HAL function EDigitiserHalSetNumberOfPointers");
sl@0: 			r = KErrNotSupported;
sl@0: 			break;
sl@0: 		default:
sl@0: 			r = (*function)(aPtr, aFunction, a1, a2);
sl@0: 			break;
sl@0: 		}
sl@0: 	return r;
sl@0: 	}
sl@0: 
sl@0: DECLARE_STANDARD_EXTENSION()
sl@0: 	{
sl@0: 	TInt r = KErrNone;
sl@0: 	
sl@0: 	// Initialise Digitiser HAL Data first.
sl@0: 	InitialiseDigitiserHalData();
sl@0: 	
sl@0: 	NKern::ThreadEnterCS();
sl@0: 	
sl@0: 	// Find original handler whose behaviour will be overriden
sl@0: 	SHalEntry* originalHandlerPtr = Kern::FindHalEntry(EHalGroupDigitiser,0);
sl@0: 	if (originalHandlerPtr == NULL)
sl@0: 		{
sl@0: 		NKern::ThreadLeaveCS();
sl@0: 		Kern::Printf("t_halattprovider error: original handler of EHalGroupDigitiser group not found");
sl@0: 		return KErrNotFound;
sl@0: 		}
sl@0: 	gOriginalHandler = *originalHandlerPtr; // copy contents of the SHalEntry
sl@0: 	
sl@0: 	// Remove original handler
sl@0: 	r = Kern::RemoveHalEntry(EHalGroupDigitiser, 0);
sl@0: 	if (r != KErrNone)
sl@0: 		{
sl@0: 		NKern::ThreadLeaveCS();
sl@0: 		Kern::Printf("t_halattprovider error: unable to unregister original handler for EHalGroupDigitiser group, code:%d",r);
sl@0: 		return r;
sl@0: 		}
sl@0: 	
sl@0: 	// Add new handler
sl@0: 	r=Kern::AddHalEntry(EHalGroupDigitiser,halFunction,gOriginalHandler.iPtr,0);
sl@0: 	if (r != KErrNone)
sl@0: 		{
sl@0: 		NKern::ThreadLeaveCS();
sl@0: 		Kern::Printf("t_halattprovider error: unable register handler for EHalGroupDigitiser group, code:%d",r);
sl@0: 		return r;
sl@0: 		}
sl@0: 
sl@0: 	NKern::ThreadLeaveCS();
sl@0: 	
sl@0: 	Kern::Printf("t_halattprovider: registered successfully");
sl@0: 	return r;
sl@0: 	}