/*

* Copyright (c) 2009 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: Minimalistic pointer driver

*

*/

//#define DEBUG

#include <syborg_priv.h>

#include "syborg_pointer.h"

_LIT(KPointerDfcQNamePre,"PointDFC");

const TInt KDfcQuePriority = 27;

TPointerRv::TPointerRv() //sosco :

//  iRxDfc(RxDfc,this,Kern::DfcQue0(),1)

{

  __DEBUG_PRINT("TPointerRv::TPointerRv()");

 TInt err = Kern::DfcQInit(&iDfcQue, KDfcQuePriority, &KPointerDfcQNamePre);

 if (err)

 	{

	__KTRACE_OPT(KPANIC, Kern::Printf("TPointerRv::TPointerRv() Error creating dfcq (%d)", err));

	}

  iRxDfc = new TDfc(RxDfc,this,&iDfcQue,1);

  __ASSERT_ALWAYS(iRxDfc!=NULL,Kern::Printf("Failed to create DFC"));

  TInt r = Interrupt::Bind(EIntPointer,Isr,this);

  if(r != KErrNone)

	__KTRACE_OPT(KPANIC, Kern::Printf("TPointerRv::TPointerRv() Interrupt::Bind(%d)=%d",

									  EIntPointer, r));

  iPointerOn = ETrue;

  iLastBut = 0;

  Interrupt::Enable(EIntPointer);

}

TPointerRv::~TPointerRv()

{

}

struct TPointerRv::PData* TPointerRv::FifoPop(void)

{

  struct TPointerRv::PData* val = &iPDataFifo[iFifoPos];

  iFifoPos++;

  iFifoCount--;

  if (iFifoPos == FIFO_SIZE)

	iFifoPos = 0;

  return val;

}

void TPointerRv::FifoPush(struct TPointerRv::PData* val)

{

  TInt slot;

  if (iFifoCount == FIFO_SIZE)

	return;

  slot = iFifoPos + iFifoCount;

  if (slot >= FIFO_SIZE)

	slot -= FIFO_SIZE;

  iPDataFifo[slot] = *val;

  iFifoCount++;

  //  __DEBUG_PRINT("TPointerRv::FifoPush %d %d %d %d",val->x, val->y, val->z, val->but);

  //  __DEBUG_PRINT("TPointerRv::FifoPush %d %d %d %d",iPDataFifo[slot].x, iPDataFifo[slot].y, iPDataFifo[slot].z, iPDataFifo[slot].but);

}

void TPointerRv::Init3()

{

  __DEBUG_PRINT("TPointerRv::Init3");

  TInt reg = ReadReg(KHwBaseKmiPointer,POINTER_ID);

  WriteReg(KHwBaseKmiPointer,POINTER_INT_ENABLE,1);

  TInt r = Kern::AddHalEntry(EHalGroupMouse,DoPointerHalFunction,this);

  if(r != KErrNone)

	__KTRACE_OPT(KPANIC, Kern::Printf("TPointerRv::Init3(): Kern::AddHalEntry()=%d", r));

  // Get information about the screen display mode

  TPckgBuf<TVideoInfoV01> buf;

  TVideoInfoV01& videoInfo = buf();

  r = Kern::HalFunction(EHalGroupDisplay, EDisplayHalCurrentModeInfo, (TAny*)&buf, NULL);

  if(r != KErrNone)

	__KTRACE_OPT(KPANIC, Kern::Printf("TPointerRv::Init3(): Kern::HalFunction(EDisplayHalCurrentModeInfo)=%d", r));

  iScreenWidth  = videoInfo.iSizeInPixels.iWidth;

  iScreenHeight = videoInfo.iSizeInPixels.iHeight;

  iDisplayMode  = videoInfo.iDisplayMode;

  iVideoMem = videoInfo.iVideoAddress + videoInfo.iOffsetToFirstPixel;

  iOffSetBetweenEachLine = 640;

  ix = iy = 0;

  iXFactor = Fixed(iScreenWidth) / Fixed(0x8000);

  iYFactor = Fixed(iScreenHeight) / Fixed(0x8000);

  iFifoPos = iFifoCount = 0;

  iFirstTime= ETrue;

}

void TPointerRv::Process(TPointerRv *i, struct TPointerRv::PData *pd)

{

  TRawEvent e;

  //  __DEBUG_PRINT("Event: X=%d Y=%d Point %d", pd->x, pd->y, pd->but);

  //  __DEBUG_PRINT("  Last X=%d Y=%d Point %d", i->ix, i->iy, i->iLastBut);

  //  i->ix += pd->x;

  //  i->iy += pd->y;

  i->ix = int(Fixed(pd->x) * i->iXFactor);

  i->iy = int(Fixed(pd->y) * i->iYFactor);

  switch(pd->but)

	{

	case 0:  // Button released

	  switch(i->iLastBut)

		{

		case 0:

		  if( (pd->x!=0) || (pd->y!=0) ) {

			e.Set(TRawEvent::EPointerMove, i->ix, i->iy);

			__DEBUG_PRINT("1 EPointerMove (x:%d y:%d)", i->ix, i->iy);

		  }

		  goto fin;

		case 1: // Left

		  e.Set(TRawEvent::EButton1Up, i->ix, i->iy);

		  __DEBUG_PRINT("2 EButton1UP (x:%d y:%d)", i->ix, i->iy);

		  goto fin;

		case 2: // Right

		  e.Set(TRawEvent::EButton2Up, i->ix, i->iy);

		  __DEBUG_PRINT("3 EButton2UP (x:%d y:%d)", i->ix, i->iy);

		  goto fin;

		}

	case 1: // Left

	  if (i->iLastBut == 0) {

		e.Set(TRawEvent::EButton1Down, i->ix, i->iy);

		__DEBUG_PRINT("4 EButton1Down (x:%d y:%d)", i->ix, i->iy);

	  }

	  else if( (pd->x!=0) || (pd->y!=0) ) {

		e.Set(TRawEvent::EPointerMove, i->ix, i->iy);

		__DEBUG_PRINT("5 EPointerMove (x:%d y:%d)", i->ix, i->iy);

	  }

	  break;

	case 2: // Right

	  if (i->iLastBut == 0) {

		e.Set(TRawEvent::EButton2Down, i->ix, i->iy);

		__DEBUG_PRINT("6 EButton2Down (x:%d y:%d)", i->ix, i->iy);

	  }

	  else if( (pd->x!=0) || (pd->y!=0) ) {

		e.Set(TRawEvent::EPointerMove, i->ix, i->iy);

		__DEBUG_PRINT("7 EPointerMove (x:%d y:%d)", i->ix, i->iy);

	  }

	  break;

	}

 fin:

  Kern::AddEvent(e);

  i->iLastBut = pd->but;

}

void TPointerRv::DisplayPointer()

{

TUint32 *pMem =0;

TInt k=0;

	if(!iFirstTime)

	{

	//restore old pointer position

	pMem = (TUint32 *)iVideoMem;

	pMem+= iYtop* iOffSetBetweenEachLine;

	pMem+= iXleft;

	for(TInt i=0;i<(iYbottom-iYtop);i++)

	{

		for(TInt j=0;j<(iXright-iXleft);j++)

		{

			*pMem = iImageStore[k];

			pMem++;

			k++;

		}

		pMem+= (iOffSetBetweenEachLine - iXright) + iXleft;

	}

	}

	iFirstTime = EFalse;

	//10*10 pixel pointer centered around position and check are within allowed bounds of screen

	iXleft = ix - 5;

	if(iXleft<0)

		iXleft=0;

	iXright = ix + 5;

	if(iXright>iScreenWidth)

		iXright = iScreenWidth;

	iYtop = iy - 5;

	if(iYtop<0)

		iYtop=0;

	iYbottom = iy +5;

	if(iYbottom> iScreenHeight)

		iYbottom=iScreenHeight;

	pMem = (TUint32 *)iVideoMem;

	k=0;

	pMem+= iYtop* iOffSetBetweenEachLine;

	pMem+= iXleft;

	for(TInt i=0;i<(iYbottom-iYtop);i++)

	{

		for(TInt j=0;j<(iXright-iXleft);j++)

		{

			iImageStore[k] = *pMem;

			*pMem = 0;

			pMem++;

			k++;

		}

		pMem+= (iOffSetBetweenEachLine - iXright) + iXleft;

	}

}

void TPointerRv::RxDfc(TAny* aPtr)

{

  __DEBUG_PRINT("TPointerRv::RxDfc");

  TPointerRv* i = static_cast<TPointerRv*>(aPtr);

  while(i->iFifoCount>0) {

	struct TPointerRv::PData *pd= i->FifoPop();

	Process(i,pd);

  }

}

void TPointerRv::Isr(TAny* aPtr)

{

  __DEBUG_PRINT("TPointerRv::Isr");

  TPointerRv& k = *(TPointerRv*)aPtr;

  // interrupts are now auto clear

  while(ReadReg(KHwBaseKmiPointer, POINTER_FIFO_COUNT)!=0)

  {

	WriteReg(KHwBaseKmiPointer,POINTER_LATCH,1);

	// SOSCO: moved to here, as the buffer seems to be running one notch out,

	// writing to the pointer latch first seems to return the correct FIFO entry.

	struct TPointerRv::PData pd;

	pd.x = ReadReg(KHwBaseKmiPointer,POINTER_X);

	pd.y = ReadReg(KHwBaseKmiPointer,POINTER_Y);

	pd.z = ReadReg(KHwBaseKmiPointer,POINTER_Z);

	pd.but = ReadReg(KHwBaseKmiPointer,POINTER_BUTTONS);

	k.FifoPush(&pd);

// SOSCO - moved	WriteReg(KHwBaseKmiPointer,POINTER_LATCH,1);

  }

  //  WriteReg(KHwBaseKmiPointer,POINTER_CLEAR_INT,0);

  Interrupt::Clear(EIntPointer);

  k.iRxDfc->Add();

}

TInt TPointerRv::DoPointerHalFunction(TAny* aThis, TInt aFunction, TAny* a1, TAny* a2)

{

  return static_cast<TPointerRv*>(aThis)->PointerHalFunction(aFunction,a1,a2);

}

TInt TPointerRv::PointerHalFunction(TInt aFunction, TAny* a1, TAny* /*a2*/)

{

  __DEBUG_PRINT("TPointerRv::PointerHalFunction");

  TInt r=KErrNone;

  switch(aFunction)

    {

	case EMouseHalMouseState:

	  {

		kumemput32(a1, (TBool*)&iPointerOn, sizeof(TBool));

		break;

	  }

	case EMouseHalSetMouseState:

	  {

		  /* SOSCO - removed, causes platsec error

	        __SECURE_KERNEL(

	           if(!Kern::CurrentThreadHasCapability(ECapabilityMultimediaDD,

		        __PLATSEC_DIAGNOSTIC_STRING("Checked by Hal function EMouseHalSetMouseState")))

		     return KErrPermissionDenied;

		   );

		   */

		if(((TBool)a1 == HAL::EMouseState_Visible) && (iPointerOn == (TBool)EFalse))

		  {

			iPointerOn=(TBool)ETrue;

		  }

		else if(((TBool)a1 == HAL::EMouseState_Invisible) && (iPointerOn==(TBool)ETrue))

		  {

			iPointerOn=(TBool)EFalse;

		  }

		break;

	  }

	case EMouseHalMouseInfo:

	  {

		TPckgBuf<TMouseInfoV01> vPckg;

		TMouseInfoV01& xyinfo = vPckg();

		xyinfo.iMouseButtons = 2;

		xyinfo.iMouseAreaSize.iWidth = iScreenWidth;

		xyinfo.iMouseAreaSize.iHeight = iScreenHeight;

		xyinfo.iOffsetToDisplay.iX = 0;

		xyinfo.iOffsetToDisplay.iY = 0;

		Kern::InfoCopy(*(TDes8*)a1,vPckg);

		break;

	  }

        case EMouseHalSetMouseSpeed:

	  {

		  /* SOSCO - removed, causes platsec error

	        __SECURE_KERNEL(

	           if(!Kern::CurrentThreadHasCapability(ECapabilityMultimediaDD,

		        __PLATSEC_DIAGNOSTIC_STRING("Checked by Hal function EMouseHalSetMouseSpeed")))

		     return KErrPermissionDenied;

		   );

		   */

		// fall thru to NotSupported

	  }

        case EMouseHalSetMouseAcceleration:

	  {

		  /* SOSCO - removed, causes platsec error

	        __SECURE_KERNEL(

	           if(!Kern::CurrentThreadHasCapability(ECapabilityMultimediaDD,

		        __PLATSEC_DIAGNOSTIC_STRING("Checked by Hal function EMouseHalSetMouseAcceleration")))

		     return KErrPermissionDenied;

		   );

		   */

		// fall thru to NotSupported

	  }

	default:

	  {

		r = KErrNotSupported;

		break;

	  }

	}

  return r;

}

DECLARE_STANDARD_EXTENSION()

{

  __DEBUG_PRINT("DECLARE_STANDARD_EXTENSION");

  TPointerRv *d = new TPointerRv;

  d->Init3();

  return KErrNone;

}