/*

 * 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;

 	}