diff -r c1e808730d6c -r c36d67f77f75 devsound/devsoundpluginsupport/src/CustomInterfaces/cmmfdevsoundcibitrate.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsound/devsoundpluginsupport/src/CustomInterfaces/cmmfdevsoundcibitrate.cpp	Thu Jun 24 10:37:45 2010 +0100
@@ -0,0 +1,459 @@
+/*
+* 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;
+	}
+
+