/*

* Copyright (c) 2005 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 "cmmfdevsoundcibitrateimplementationuid.hrh"

#include <ecom/implementationproxy.h>

#include <ecom/ecom.h>

#include <s32mem.h>

#include "cmmfdevsoundcibitrate.h"

// __________________________________________________________________________

// Implementation

////////////////////////////////////////// MUX /////////////////////

TInt CMMFDevSoundCIBitRateMux::OpenInterface(TUid /*aInterfaceId*/)

	{

	// attempt to open the interface link with the

	// remote slave device

	iRemoteHandle = -1;

	TUid slaveId = {KMmfUidCustomInterfaceBitRateDeMux};

	TInt handle = iUtility->OpenSlave(slaveId, KNullDesC8);

	if (handle >= 0)

		{

		iRemoteHandle = handle;

		}

	return iRemoteHandle;

	}

void CMMFDevSoundCIBitRateMux::Release()

	{

	// close the slave device if it exists

	if (iRemoteHandle != -1)

		{

		// we assume the slave is closed correctly

		iUtility->CloseSlave(iRemoteHandle);

		}

	TUid key = iKey;

	delete this;

	// tell ECom to destroy us

	REComSession::DestroyedImplementation(key);

	}

void CMMFDevSoundCIBitRateMux::PassDestructorKey(TUid aDestructorKey)

	{

	// store the destructor key

	iKey = aDestructorKey;

	}

void CMMFDevSoundCIBitRateMux::CompleteConstructL(MMMFDevSoundCustomInterfaceMuxUtility* aCustomUtility)

	{

	// store a pointer to the utility

	iUtility = aCustomUtility;

	}

MMMFDevSoundCustomInterfaceMuxPlugin* CMMFDevSoundCIBitRateMux::NewL()

	{

	CMMFDevSoundCIBitRateMux* self = new (ELeave) CMMFDevSoundCIBitRateMux;

	return self;

	}

TAny* CMMFDevSoundCIBitRateMux::CustomInterface(TUid /*aInterfaceId*/)

	{

	MMMFDevSoundCustomInterfaceBitRate* interface = this;

	return interface;

	}

CMMFDevSoundCIBitRateMux::CMMFDevSoundCIBitRateMux() :

	iRemoteHandle(-1)

	{	

	}

CMMFDevSoundCIBitRateMux::~CMMFDevSoundCIBitRateMux()

	{	

	}

// from MMMFDevSoundCustomInterfaceBitRate

void CMMFDevSoundCIBitRateMux::GetSupportedBitRatesL(RArray<TInt>& aSupportedBitRates)

	{

	if (iRemoteHandle == -1)

		{

		User::Leave(KErrNotReady);

		}

	// first clear out the array

	aSupportedBitRates.Reset();

	// now fetch the count from the server

	TInt count = -1;

	count = iUtility->SendSlaveSyncCommand(iRemoteHandle, EMMFDevSoundCIBitRateGetSupportedBitRates, KNullDesC8);

	// if count is negative then the server side left with an error

	if (count < 0)

		{

		User::Leave(count);

		}

	// no point getting the data if the count is zero

	if (count != 0)

		{

		// allocate a temporary buffer to hold the bitrates

		HBufC8* buf = HBufC8::NewLC(count * sizeof(TInt32));

		TPtr8 ptr = buf->Des();

		// fetch the bitrates - but send over the received count to be sure

		TPckgBuf<TInt> countBuf(count);

		User::LeaveIfError(iUtility->SendSlaveSyncCommandResult(

											 iRemoteHandle, 

											 EMMFDevSoundCIBitRateGetSupportedBitRatesArray,

											 countBuf, ptr));

		// stream data into the pointer

		RDesReadStream stream(ptr);

		CleanupClosePushL(stream);

		TInt err = KErrNone;

		for (TInt i = 0; i < count; i++)

			{

			// note we don't destroy array because we don't own it

			// but we do reset it as it is incomplete

			err = aSupportedBitRates.Append(stream.ReadInt32L());

			if (err != KErrNone)

				{

				aSupportedBitRates.Reset();

				User::Leave(KErrCorrupt);

				}

			}

		CleanupStack::PopAndDestroy(2, buf);// stream, buf

		}

	}

TInt CMMFDevSoundCIBitRateMux::BitRateL()

	{

	if (iRemoteHandle == -1)

		{

		User::Leave(KErrNotReady);

		}

	// send EMMFDevSoundCIBitRateBitRate command to slave

	TInt bitrate = 0;

	bitrate = iUtility->SendSlaveSyncCommand(iRemoteHandle, EMMFDevSoundCIBitRateBitRate, KNullDesC8);

	// if bitrate is negative then remote side left with an error

	if (bitrate < 0)

		{

		User::Leave(bitrate);

		}

	return bitrate;

	}

void CMMFDevSoundCIBitRateMux::SetBitRateL(TInt aBitRate)

	{

	if (iRemoteHandle == -1)

		{

		User::Leave(KErrNotReady);

		}

	// send the bitrate in the sync command

	TPckgBuf<TInt> bitBuffer(aBitRate);

	// any return code other than zero is an error

	User::LeaveIfError(iUtility->SendSlaveSyncCommand(iRemoteHandle, EMMFDevSoundCIBitRateSetBitRate, bitBuffer));

	}

/////////////////////////////////////// DEMUX //////////////////////	

TInt CMMFDevSoundCIBitRateDeMux::OpenInterface(TUid /*aInterfaceId*/)

	{

	return KErrNone;

	}

void CMMFDevSoundCIBitRateDeMux::Release()

	{

	TUid key = iKey;

	delete this;

	// tell ECom to destroy us

	REComSession::DestroyedImplementation(key);

	}

void CMMFDevSoundCIBitRateDeMux::PassDestructorKey(TUid aDestructorKey)

	{

	// store the destructor key

	iKey = aDestructorKey;

	}

void CMMFDevSoundCIBitRateDeMux::SetInterfaceTarget(MMMFDevSoundCustomInterfaceTarget* aTarget)

	{

	iTarget = aTarget;

	}

void CMMFDevSoundCIBitRateDeMux::CompleteConstructL(MMMFDevSoundCustomInterfaceDeMuxUtility* aCustomUtility)

	{

	// store a pointer to the utility

	iUtility = aCustomUtility;

	}

void CMMFDevSoundCIBitRateDeMux::RefreshL()

	{

	// refetch the bitrate custom interface if we already have a target

	if (iTarget)

		{

		MMMFDevSoundCustomInterfaceBitRate* ptr = NULL;

		ptr = static_cast <MMMFDevSoundCustomInterfaceBitRate*> (iTarget->CustomInterface(KUidCustomInterfaceDevSoundBitRate));

		if (!ptr)

			{

			iBitRateInterface = NULL;

			User::Leave(KErrNotSupported);

			}

		else

			{

			iBitRateInterface = ptr;

			}	

		}

	}

MMMFDevSoundCustomInterfaceDeMuxPlugin* CMMFDevSoundCIBitRateDeMux::NewL()

	{

	CMMFDevSoundCIBitRateDeMux* self = new (ELeave) CMMFDevSoundCIBitRateDeMux;

	return self;

	}

CMMFDevSoundCIBitRateDeMux::CMMFDevSoundCIBitRateDeMux()

	{

	}

CMMFDevSoundCIBitRateDeMux::~CMMFDevSoundCIBitRateDeMux()

	{

	iBitRateArray.Reset();

	iBitRateArray.Close();

	}

TInt CMMFDevSoundCIBitRateDeMux::DoOpenSlaveL(TUid /*aInterface*/, const TDesC8& /*aPackageBuf*/)

	{

	// fetch the bitrate custom interface

	MMMFDevSoundCustomInterfaceBitRate* ptr = NULL;

	ptr = static_cast <MMMFDevSoundCustomInterfaceBitRate*> (iTarget->CustomInterface(KUidCustomInterfaceDevSoundBitRate));

	if (!ptr)

		{

		iBitRateInterface = NULL;

		User::Leave(KErrNotSupported);

		}

	else

		{

		iBitRateInterface = ptr;

		}

	return KErrNone;

	}

void CMMFDevSoundCIBitRateDeMux::DoCloseSlaveL(TInt /*aHandle*/)

	{

	// nothing to do

	}

// original RMessage is supplied so that remote demux plugin can extract necessary details

// using DeMux utility

TInt CMMFDevSoundCIBitRateDeMux::DoSendSlaveSyncCommandL(const RMmfIpcMessage& aMessage)

	{

	TMMFDevSoundCIMessageData data;

	// decode message

	iUtility->GetSyncMessageDataL(aMessage, data);

	TInt retVal = -1;

	switch (data.iCommand)

		{

		case EMMFDevSoundCIBitRateBitRate:

			{

			retVal = DoBitRateL();

			break;

			}

		case EMMFDevSoundCIBitRateSetBitRate:

			{

			// we know that offset 2 contains a TInt

			TPckgBuf<TInt> bitBuffer;

			iUtility->ReadFromInputDesL(aMessage, &bitBuffer);

			DoSetBitRateL(bitBuffer());

			retVal = KErrNone;

			break;

			}

		case EMMFDevSoundCIBitRateGetSupportedBitRates:

			{

			// reset the current bitrate array

			iBitRateArray.Reset();

			DoGetSupportedBitRatesL(iBitRateArray);

			// send back the array count

			TInt count = iBitRateArray.Count();

			retVal = count;

			break;

			}

		default:

			{

			User::Leave(KErrNotSupported);

			}

		}

	return retVal;

	}

TInt CMMFDevSoundCIBitRateDeMux::DoSendSlaveSyncCommandResultL(const RMmfIpcMessage& aMessage)

	{

	TMMFDevSoundCIMessageData data;

	// decode message

	iUtility->GetSyncMessageDataL(aMessage, data);

	switch (data.iCommand)

		{

		case EMMFDevSoundCIBitRateGetSupportedBitRatesArray:

			{

			DoCopyBitRateBufferToClientL(aMessage);		

			break;

			}

		default:

			{

			User::Leave(KErrNotSupported);

			}

		}

	return KErrNone;

	}

void CMMFDevSoundCIBitRateDeMux::DoSendSlaveAsyncCommandL(const RMmfIpcMessage& /*aMessage*/)

	{

	// not used in this interface

	}

void CMMFDevSoundCIBitRateDeMux::DoSendSlaveAsyncCommandResultL(const RMmfIpcMessage& /*aMessage*/)

	{

	// not used in this interface

	}

// bitrate custom interface implementation

void CMMFDevSoundCIBitRateDeMux::DoGetSupportedBitRatesL(RArray<TInt>& aSupportedBitRates)

	{

	if (!iBitRateInterface)

		{

		User::Leave(KErrNotReady);

		}

	iBitRateInterface->GetSupportedBitRatesL(aSupportedBitRates);

	}

void CMMFDevSoundCIBitRateDeMux::DoCopyBitRateBufferToClientL(const RMmfIpcMessage& aMessage)

	{

	if (!iBitRateInterface)

		{

		User::Leave(KErrNotReady);

		}

	// check our count is the same as the client's

	TPckgBuf<TInt> countBuffer;

	iUtility->ReadFromInputDesL(aMessage, &countBuffer);

	TInt count = countBuffer();

	if (count != iBitRateArray.Count())

		{

		User::Leave(KErrCorrupt);

		}

	// send back the array - the client has the count already

	const TInt KBufExpandSize8 = 8; //two TInt's

	CBufFlat* dataCopyBuffer = CBufFlat::NewL(KBufExpandSize8);

	CleanupStack::PushL(dataCopyBuffer);

	RBufWriteStream stream;

	stream.Open(*dataCopyBuffer);

	CleanupClosePushL(stream);

	for (TInt i = 0; i < count; i++)

		{

		stream.WriteInt32L(iBitRateArray[i]);

		}

	// write the data to the supplied descriptor buffer

	TPtr8 ptrBuf = dataCopyBuffer->Ptr(0);

	iUtility->WriteToOutputDesL(aMessage, ptrBuf);

	stream.Close();

	CleanupStack::PopAndDestroy(2); // iDataCopyBuffer, stream

	}

TInt CMMFDevSoundCIBitRateDeMux::DoBitRateL()

	{

	if (!iBitRateInterface)

		{

		User::Leave(KErrNotReady);

		}

	return iBitRateInterface->BitRateL();

	}

void CMMFDevSoundCIBitRateDeMux::DoSetBitRateL(TInt aBitRate)

	{

	if (!iBitRateInterface)

		{

		User::Leave(KErrNotReady);

		}

	// set the bitrate		

	iBitRateInterface->SetBitRateL(aBitRate);

	}

//

// ImplementationTable

//

const TImplementationProxy ImplementationTable[] = 

	{

	IMPLEMENTATION_PROXY_ENTRY(KMmfUidCustomInterfaceBitRateMux,	CMMFDevSoundCIBitRateMux::NewL),

	IMPLEMENTATION_PROXY_ENTRY(KMmfUidCustomInterfaceBitRateDeMux,	CMMFDevSoundCIBitRateDeMux::NewL),

	};

//

// ImplementationGroupProxy

//

////////////////////////////////////////////////////////////////////////////////

EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)

	{

	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);

	return ImplementationTable;

	}