// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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:

//

#include <kernel/kern_priv.h>

#include <graphics/surfacemanager.h>

#include "surfacemanager_dev.h"

DECLARE_EXTENSION_LDD()

	{

	return new DSurfaceManagerFactory;

	}

static DSurfaceManager Manager;

DSurfaceManagerFactory::DSurfaceManagerFactory()

	{

	// Set version number for this device

	iVersion=RSurfaceManagerDriver::VersionRequired();

	iParseMask=0;

	}

TInt DSurfaceManagerFactory::Install()

	{

	return SetName(&RSurfaceManagerDriver::Name());

	}

/**

  Called by the kernel's device driver framework to create a Logical Channel.

  This is called in the context of the user thread (client) which requested the creation of a Logical Channel

  (E.g. through a call to RBusLogicalChannel::DoCreate)

  The thread is in a critical section.

  @param aChannel  Set to point to the created Logical Channel

  @return KErrNone if successful, otherwise one of the other system wide error codes.

*/

TInt DSurfaceManagerFactory::Create(DLogicalChannelBase*& aChannel)

	{

	aChannel=new DSurfaceManagerChannel();

	if(!aChannel)

		return KErrNoMemory;

	return KErrNone;

	}

/**

  Return the drivers capabilities.

  Called in the response to an RDevice::GetCaps() request.

  @param aDes  User-side descriptor to write capabilities information into

*/

void DSurfaceManagerFactory::GetCaps(TDes8& aDes) const

	{

	// Create a capabilities object

	RSurfaceManagerDriver::TCaps caps;

	caps.iVersion = iVersion;

	// Write it back to user memory

	Kern::InfoCopy(aDes,reinterpret_cast<TUint8*>(&caps),sizeof(caps));

	}

DSurfaceManagerChannel::DSurfaceManagerChannel()

	{

	TRACE(Kern::Printf("SurfaceManagerChannel Creation");)

	}

/**

Channel destructor.

Called when the process owning the channel has died or closed the channel.

Calls the manager object to indicate that the process has closed a session so it 

can cleanup the surfaces which are only owned by that process if it has no further connections.

*/

DSurfaceManagerChannel::~DSurfaceManagerChannel()

	{

	Manager.RemoveConnection(iOwner);

	}

/**

  Second stage constructor called by the kernel's device driver framework.

  This is called in the context of the user thread (client) which requested the creation of a Logical Channel

  (E.g. through a call to RBusLogicalChannel::DoCreate)

  The thread is in a critical section.

  @param aUnit  The unit argument supplied by the client to RBusLogicalChannel::DoCreate

  @param aInfo  The info argument supplied by the client to RBusLogicalChannel::DoCreate

  @param aVer  The version argument supplied by the client to RBusLogicalChannel::DoCreate

  @return KErrNone if successful, otherwise one of the other system wide error codes.

*/

TInt DSurfaceManagerChannel::DoCreate(TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& aVer)

	{

	// Check version

	if (!Kern::QueryVersionSupported(RSurfaceManagerDriver::VersionRequired(),aVer))

		return KErrNotSupported;

	iOwner = &Kern::CurrentProcess();

	TInt ret = Manager.AddConnection(iOwner);

	if (ret != KErrNone)

		iOwner = NULL;

	return ret;

	}

/**

  Process a request on this logical channel.

  @param aReqNo Request number:

  	            ==KMaxTInt, a 'DoCancel' message

	            >=0, a 'DoControl' message with function number equal to iValue

	            <0, a 'DoRequest' message with function number equal to ~iValue

  @param a1     First argument. For DoRequest requests this is a pointer to the TRequestStatus.

  @param a2     Second argument. For DoRequest this is a pointer to the 2 actual TAny* arguments.

  @return       Result ignored by device driver framework for DoRequest requests.

*/

TInt DSurfaceManagerChannel::Request(TInt aReqNo, TAny* a1, TAny* a2)

	{

	// Decode the message type and dispatch it to the relevent handler function...

	// only using synchronous control messages

	if (static_cast<TUint>(aReqNo) < static_cast<TUint>(KMaxTInt))

		{

		return DoControl(aReqNo, a1, a2);

		}

	return KErrNotSupported;

	}

/**

  Process synchronous 'control' requests

*/

TInt DSurfaceManagerChannel::DoControl(TInt aFunction, TAny* a1, TAny* a2)

	{

	TRACE(Kern::Printf(">DSurfaceManagerChannel::DoControl fn=%d process = %u\n",aFunction, iOwner);)

	TInt r;

	switch(aFunction)

		{

		case RSurfaceManagerDriver::EControlCreateSurface:

			r = Manager.CreateSurface(reinterpret_cast<const TDesC8*>(a1), reinterpret_cast<TSurfaceId*>(a2));

			break;

		case RSurfaceManagerDriver::EControlOpenSurface:

			r = Manager.OpenSurface(reinterpret_cast<TSurfaceId*>(a1));

			break;

		case RSurfaceManagerDriver::EControlCloseSurface:

			r = Manager.CloseSurface(reinterpret_cast<TSurfaceId*>(a1));

			break;

		case RSurfaceManagerDriver::EControlAccessSurfaceData:

			r = Manager.MapSurface(reinterpret_cast<TSurfaceId*>(a1));

			break;

		case RSurfaceManagerDriver::EControlSurfaceInfo:

			r = Manager.SurfaceInfo(reinterpret_cast<TSurfaceId*>(a1), reinterpret_cast<TDes8*>(a2));

			break;

		case RSurfaceManagerDriver::EControlCreateSurfaceEx:

			r = Manager.CreateSurface(reinterpret_cast<RSurfaceManagerDriver::TDeviceParam*>(a1), (TInt)a2);

			break;

		case RSurfaceManagerDriver::EControlSynchronizeCache:

			r = Manager.SynchronizeCache(reinterpret_cast<RSurfaceManagerDriver::TDeviceParam*>(a1), (RSurfaceManager::TSyncOperation&)a2);

			break;

		case RSurfaceManagerDriver::EControlGetSurfaceHint:

			r = Manager.GetSurfaceHint(reinterpret_cast<TSurfaceId*>(a1), reinterpret_cast<RSurfaceManager::THintPair*>(a2));

			break;

		case RSurfaceManagerDriver::EControlSetSurfaceHint:

			r = Manager.SetSurfaceHint(reinterpret_cast<TSurfaceId*>(a1), reinterpret_cast<const RSurfaceManager::THintPair*>(a2));

			break;

		case RSurfaceManagerDriver::EControlAddSurfaceHint:

			r = Manager.AddSurfaceHint(reinterpret_cast<TSurfaceId*>(a1), reinterpret_cast<const RSurfaceManager::THintPair*>(a2));

			break;

		case RSurfaceManagerDriver::EControlGetBufferOffset:

			r = Manager.GetBufferOffset(reinterpret_cast<RSurfaceManagerDriver::TDeviceParam*>(a1),reinterpret_cast<TUint*>(a2));

			break;

		case RSurfaceManagerDriver::EControlGetSurfaceManagerAttrib:

			r = Manager.GetSurfaceManagerAttrib(reinterpret_cast<RSurfaceManager::TSurfaceManagerAttrib*>(a1),reinterpret_cast<TInt*>(a2));

			break;			

		default:

			r = KErrNotSupported;

			break;

		}

	TRACE(Kern::Printf("<SurfaceManagerChannel::DoControl result=%d\n",r);)

	return r;

	}

DECLARE_STANDARD_EXTENSION()

	{

	//called when kernel extension is loaded

	//initialise the kernel extension

	TRACE(Kern::Printf("<SurfaceManager Extension entry point\n");)

	return KErrNone;

	}