// Copyright (c) 2010 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:

// Virtual Video Hardware Channel implementation

#include <kernel/kernel.h>

#include <assp.h>

#include <graphics/virtualvideohwchannel.h>

#include <graphics/virtualvideohwdeviceinterface.h>

#include <graphics/guestvideodriverprotocol.h>

#include <graphics/guestvideodrivercommon.h>

#include <graphics/devicereqhandler.h>

#include "serializedfunctioncall.h"

// -----------------------------------------------------------------------------

// DVirtualVideoHwChannel::DVirtualVideoHwChannel

// -----------------------------------------------------------------------------

//

DVirtualVideoHwChannel::DVirtualVideoHwChannel(

    MVirtualVideoHwDeviceInterface& aDeviceInterface,

    DVirtualVideoHwInterface& aHwInterface,

    DDeviceReqHandler& aDeviceReqHandler,

    TDfcQue* aQueue ) :

    iDeviceInterface( aDeviceInterface ),

    iHwInterface( aHwInterface ),

    iReqHandler( aDeviceReqHandler )

    {    

    SetDfcQ( aQueue );

    }

// -----------------------------------------------------------------------------

// DVirtualVideoHwChannel::~DVirtualVideoHwChannel

// -----------------------------------------------------------------------------

//

DVirtualVideoHwChannel::~DVirtualVideoHwChannel()

    {

    // Enter critical section

    NKern::ThreadEnterCS();

    iMsgQ.CompleteAll( KErrAbort );

    // Leave critical section

    NKern::ThreadLeaveCS();

    }

// -----------------------------------------------------------------------------

// DVirtualVideoHwChannel::Request

// -----------------------------------------------------------------------------

//

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

    {

    TInt result = DLogicalChannel::Request( aReqNo, a1, a2 );

    return result;

    }

// -----------------------------------------------------------------------------

// DVirtualVideoHwChannel::HandleMsg

// -----------------------------------------------------------------------------

//

void DVirtualVideoHwChannel::HandleMsg( TMessageBase* aMsgRequest )

    {

    DThread* userThread = aMsgRequest->Client();

    TThreadMessage& msg = *(TThreadMessage*)aMsgRequest;

    // Default error condition

    TInt err = KErrNone; 

    if ( msg.iValue == ECloseMsg )

        {

        iReqHandler.HandleClientShutdown( userThread->iOwningProcess->iId, userThread->iId );

        msg.Complete( KErrNone, EFalse );

        return;

        }

    if ( msg.iValue < 0 )

        {

        TRequestStatus* status = (TRequestStatus*)msg.Ptr0();

        err = DoRequest( userThread, ~msg.iValue, status, msg.Ptr1(), msg.Ptr2() );

        if( err != KErrNone )

            {

            Kern::RequestComplete( userThread, status, err );

            }

        err = KErrNone;

        }

    else

        {

        err = DoControl( userThread, msg.iValue, msg.Ptr0(), msg.Ptr1() );

        }

    msg.Complete( err, ETrue );

    }

// -----------------------------------------------------------------------------

// DVirtualVideoHwChannel::DoCreate

// -----------------------------------------------------------------------------

//

TInt DVirtualVideoHwChannel::DoCreate( TInt /*aUnit*/, const TDesC* /*aInfo*/, const TVersion& aVer )

    {

    using namespace GuestVideoDriver;

    TInt err = KErrNone;

    if ( ! Kern::QueryVersionSupported(

            TVersion(

                    KMajorVer,

                    KMinorVer,

                    KBuildVer ),

            aVer ) )

        {

        return KErrNotSupported; 

        }

    iMsgQ.Receive();

    return err;

    }

// -----------------------------------------------------------------------------

// DVirtualVideoHwChannel::DoRequest

// -----------------------------------------------------------------------------

//

TInt DVirtualVideoHwChannel::DoRequest(

        DThread*& aUserThread,

        TInt aReqNo,

        TRequestStatus* aStatus,

        TAny* a1,

        TAny* a2 )

    {

    using namespace GuestVideoDriver;

    // Default error condition

    TInt err = KErrNone; 

    switch( aReqNo )

        {

        case ERequestExecuteCommand:

            {

            err = iReqHandler.HandleExecuteAsync(

                    aUserThread,

                    aStatus,

                    a1);

            break;

            }

        case ERequestLoadCommands:

            {

            err = iReqHandler.HandleLoadCommands(

                    aUserThread, 

                    aStatus,

                    a1 );

            break;

            }

        default:

            {

            // Other requests are not supported

            err = KErrNotSupported;

            }

            break;

        }

    return err;

    }

#ifdef FAISALMEMON_S4_SGIMAGE

TInt DVirtualVideoHwChannel::GetSgImageMetaData(TSgImageMetaData& aSgInfo, const TUint64 aId)

	{

	VVHW_TRACE("DVirtualVideoHwChannel::OpenSgImageMetaData 0x%lx", aId );

	DSgResource* sgResource = NULL;

	TInt metaDataErr = SgExtension::FindAndOpenResource( aId, sgResource );//Open the sgimage resource

	if ( metaDataErr == KErrNone )

		{

		TPckgBuf<TSgImageMetaData> metaDataPckg;

		metaDataErr = sgResource->GetMetaData( metaDataPckg );

		if ( metaDataErr == KErrNone )

			{

			aSgInfo = metaDataPckg();

			}

		sgResource->Close();

		}

	return metaDataErr;

	}

#endif

// -----------------------------------------------------------------------------

// DVirtualVideoHwChannel::DoControl

// -----------------------------------------------------------------------------

//

TInt DVirtualVideoHwChannel::DoControl(

        DThread*& aUserThread,

        TInt aFunction,

        TAny* a1,

        TAny* a2 )

    {

    using namespace GuestVideoDriver;

    // Default error condition

    TInt err = KErrNone; 

    switch( aFunction )

        {

        case ERequestMapAddress:

            {

            TPckgBuf<TInt> handle;

            err = Kern::ThreadDesRead( aUserThread, a1, handle, 0, 0 );

            if ( KErrNone == err )

                {

                DChunk* chunk = Kern::OpenSharedChunk( aUserThread, handle(), EFalse );

                if ( chunk )

                    {

                    TLinAddr kernelAddress;

                    TUint32 mapAttr;

                    TUint32 physicalAddress( 0 );

                    TInt ret = Kern::ChunkPhysicalAddress( chunk, 0, chunk->Size(), 

                            kernelAddress, mapAttr, physicalAddress );

                    TPckgC<TUint32> address( physicalAddress );

                    err = Kern::ThreadDesWrite( aUserThread, a2, address, 0, 0, aUserThread );

                    Kern::ChunkClose( chunk );

                    chunk = NULL;

                    }

                else

                    {

                    err = KErrGeneral;

                    }

                }

            break;

            }

            {

            TPhysAddr physicalAddress(0);

            TPckgC<TPhysAddr> address(physicalAddress);

            err = Kern::ThreadDesWrite(aUserThread, a1, address, 0, 0, aUserThread);

            break;

            }

#ifdef FAISALMEMON_S4_SGIMAGE

        case ERequestSgHandles:

            {

            VVHW_TRACE("DVirtualVideoHwChannel::DoControl - ERequestSgHandles" );

            TPckgBuf<TUint64> sgId;

            err = Kern::ThreadDesRead( aUserThread, a1, sgId, 0, 0 );

            if( KErrNone == err )

                {

				TSgImageMetaData sgInfo;

				err = GetSgImageMetaData( sgInfo, sgId());

				if ( KErrNone == err )

					{

					// package the handles into 64-bit value, since there's only one parameter (a2) available

					TUint64 sgHandles = (((TUint64)sgInfo.iPbufferHandle)&0xFFFFFFFF) + (((TUint64)sgInfo.iVGImageHandle)<<32);

					TPckg<TUint64> handles(sgHandles);

					err = Kern::ThreadDesWrite( aUserThread, a2, handles, 0, 0);

					if(err)

					    VVHW_TRACE("DVirtualVideoHwChannel::DoControl - ThreadDesWrite error=%d", err);

					}

				else

					{

					VVHW_TRACE("DVirtualVideoHwChannel::DoControl - OpenSgImageMetaData failed" );

					}

                }

            else

            	{

				VVHW_TRACE("DVirtualVideoHwChannel::DoControl - ThreadDesRead err=%i", err );

                }

            break;

            }

#endif

        default:

            {

            // Other functions are not supported

            err = KErrNotSupported;

            }

            break;

        }

    return err;

    }