// Copyright (c) 2005-2009 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 "MmfDevSoundCIDeMuxUtility.h"

#include <mmf/plugin/mmfdevsoundcustominterface.hrh>

#include <mmf/server/mmfdevsoundcustomcommands.h>

#include <ecom/ecom.h>

#include <mm/mmpluginutils.h>

CMMFDevSoundCIDeMuxUtility* CMMFDevSoundCIDeMuxUtility::NewL(MMMFDevSoundCustomInterfaceDeMuxInterface* aInterface)

	{

	CMMFDevSoundCIDeMuxUtility* self = new (ELeave) CMMFDevSoundCIDeMuxUtility(aInterface);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

void CMMFDevSoundCIDeMuxUtility::ConstructL()

	{

	// nothing to do in this plugin

	}

CMMFDevSoundCIDeMuxUtility::~CMMFDevSoundCIDeMuxUtility()

	{

	}

const TInt KDeMuxTempBufferSize = 20;

// create a custom interface Mux implementation

MMMFDevSoundCustomInterfaceDeMuxPlugin* CMMFDevSoundCIDeMuxUtility::CreateCustomInterfaceDeMuxL(TUid aInterfaceId)

	{

	// The Uid of the plugin will be the match string

	TInt uidAsInteger = aInterfaceId.iUid;

	TBuf8<KDeMuxTempBufferSize> tempBuffer;

	tempBuffer.Num(uidAsInteger, EHex); // has value

	TUid interfaceUid = {KUidDevSoundCustomInterfaceDeMux};

	TUid destructorKey;

	MMMFDevSoundCustomInterfaceDeMuxPlugin* self = 

		static_cast<MMMFDevSoundCustomInterfaceDeMuxPlugin*>

		(MmPluginUtils::CreateImplementationL(interfaceUid, destructorKey, tempBuffer, KRomOnlyResolverUid));

	// pass the destructor key so class can destroy itself

	self->PassDestructorKey(destructorKey);

	CleanupReleasePushL(*self);

	// attempt to construct the plugin

	self->CompleteConstructL(this);

	CleanupStack::Pop();	// self

	return self;

	}

// this will leave if the command is not a supported custom interface command

// the integer being returned is not an error code per-se it is the return code

// from the message being handled and so it makes sense here to have the function

// returning an integer but also able to leave if there is a problem

TInt CMMFDevSoundCIDeMuxUtility::ProcessCustomInterfaceCommandL(const RMmfIpcMessage& aMessage)

	{

	// get command manually - this is quicker than extracting all info

	// plus we don't know whether this is async or sync

	TInt command;

	command = aMessage.Int0();

	TInt retVal = KErrNotFound;

	switch (command)

		{

		case EMMFDevSoundCustomCommandCIOpenSlave:

			{

			// get a local copy of descriptor

			HBufC8* tempBuf = HBufC8::NewL(User::LeaveIfError(InputDesLength(aMessage)));

			CleanupStack::PushL(tempBuf);

			TPtr8 tempPtr(tempBuf->Des());

			ReadFromInputDesL(aMessage, &tempPtr);

			// fetch the interface Uid

			TPckgBuf<TUid> idBuffer;

			aMessage.ReadL(1, idBuffer);

			retVal = iInterface->DoOpenSlaveL(idBuffer(), tempPtr);		

			CleanupStack::PopAndDestroy(tempBuf);

			break;

			}

		case EMMFDevSoundCustomCommandCICloseSlave:

			{

			// handle is at offset 1

			TPckgBuf<TInt> handleBuffer;

			aMessage.ReadL(1, handleBuffer);

			iInterface->DoCloseSlaveL(handleBuffer());

			retVal = KErrNone; // no return from CloseSlave

			break;

			}

		case EMMFDevSoundCustomCommandCISendSlaveSyncCommand:

			{

			retVal = iInterface->DoSendSlaveSyncCommandL(aMessage);

			break;

			}

		case EMMFDevSoundCustomCommandCISendSlaveSyncCommandResult:

			{

			retVal = iInterface->DoSendSlaveSyncCommandResultL(aMessage);

			break;

			}

		case EMMFDevSoundCustomCommandCISendSlaveAsyncCommand:

			{

			iInterface->DoSendSlaveAsyncCommandL(aMessage);

			retVal = KErrNone; // no return from async

			break;

			}

		case EMMFDevSoundCustomCommandCISendSlaveAsyncCommandResult:

			{

			iInterface->DoSendSlaveAsyncCommandResultL(aMessage);

			retVal = KErrNone;	// no return from async

			break;

			}

		default:

			User::Leave(retVal);

		}

	return retVal;

	}

// at the moment these two functions are the same but this may change on different platforms

// so separate sync and async message data functions have been defined

void CMMFDevSoundCIDeMuxUtility::GetSyncMessageDataL(const RMmfIpcMessage& aMessage, TMMFDevSoundCIMessageData& aData)

	{

	// data is stored as commandUID, (command, handle), inbuf, outbuf

	TPckgBuf<TMMFDevSoundCustomInterfaceCommand> comBuffer;

	aMessage.ReadL(1, comBuffer);

	// get command and handle

	aData.iCommand = comBuffer().iCommand;

	aData.iHandle = comBuffer().iHandle;

	}

void CMMFDevSoundCIDeMuxUtility::GetAsyncMessageDataL(const RMmfIpcMessage& aMessage, TMMFDevSoundCIMessageData& aData)

	{

	// data is stored as commandUID, (command, handle), inbuf, outbuf,status 

	TPckgBuf<TMMFDevSoundCustomInterfaceCommand> comBuffer;

	aMessage.ReadL(1, comBuffer);

	// get command and handle

	aData.iCommand = comBuffer().iCommand;

	aData.iHandle = comBuffer().iHandle;

	}

TInt CMMFDevSoundCIDeMuxUtility::InputDesLength(const RMmfIpcMessage& aMessage)

	{

	// input descriptor is at offset 2

	TInt len = aMessage.GetDesLength(2);	

	return len;

	}

void CMMFDevSoundCIDeMuxUtility::ReadFromInputDesL(const RMmfIpcMessage& aMessage, TDes8* aBufToFill)

	{

	// check if the descriptor is large enough

	TInt len = User::LeaveIfError(InputDesLength(aMessage));

	if (len > aBufToFill->MaxLength())

		{

		User::Leave(KErrArgument);

		}

	// input descriptor is at offset 2

	aMessage.ReadL(2, *aBufToFill);

	}

void CMMFDevSoundCIDeMuxUtility::WriteToOutputDesL(const RMmfIpcMessage& aMessage, TDesC8& aBufToWrite)

	{

	// output descriptor is at offset 3

	aMessage.WriteL(3, aBufToWrite);

	}

void CMMFDevSoundCIDeMuxUtility::CompleteMessage(const RMmfIpcMessage& aMessage, TInt aError)

	{

	aMessage.Complete(aError);

	}

CMMFDevSoundCIDeMuxUtility::CMMFDevSoundCIDeMuxUtility(MMMFDevSoundCustomInterfaceDeMuxInterface* aInterface)

: iInterface(aInterface)

	{

	}