sl@0: // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Name        : audiogaincontrol.cpp
sl@0: // Part of     : ACL Logical layer
sl@0: //
sl@0: 
sl@0: 
sl@0: 
sl@0: #include "logicalaudiogaincontrol.h"
sl@0: #include <a3f/audioprocessingunittypeuids.h>
sl@0: #include <ecom/implementationproxy.h> // For making it ECom plugin
sl@0: 
sl@0: // ======== LOCAL FUNCTIONS ========
sl@0: // __________________________________________________________________________
sl@0: // Exported proxy for instantiation method resolution
sl@0: // Define the interface UIDs
sl@0: 
sl@0: // Moved from header 
sl@0: const TInt KDefaultMaxRampTime = 10;
sl@0: 
sl@0: const TImplementationProxy ImplementationTable[] = 
sl@0: 	{
sl@0: 	IMPLEMENTATION_PROXY_ENTRY(KAudioGainControlUid, CLogicalAudioGainControl::NewL)
sl@0: 	};
sl@0: 
sl@0: EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
sl@0: 	{
sl@0: 	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
sl@0: 	return ImplementationTable;
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // Constructor
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: CLogicalAudioGainControl::CLogicalAudioGainControl(TAny* aParam) : CAudioProcessingUnit(aParam)
sl@0: 	{
sl@0: 	TRACE_CREATE();
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::CLogicalAudioGainControl *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	
sl@0: 	iMaxRampTime = KDefaultMaxRampTime;
sl@0: 	
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // Factory method
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: CLogicalAudioGainControl* CLogicalAudioGainControl::NewL(TAny* aParam)
sl@0: 	{
sl@0: 	DP_STATIC_CONTEXT(CLogicalAudioGainControl::NewL *CD0*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	CLogicalAudioGainControl* self = new(ELeave)CLogicalAudioGainControl(aParam);
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop(self);
sl@0: 	DP0_RET(self, "0x%x");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // Second phase constructor
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CLogicalAudioGainControl::ConstructL()
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::ConstructL *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TAudioChannelGain left;
sl@0: 	TAudioChannelGain right;
sl@0: 	left.iLocation = TAudioChannelGain::ELeft;
sl@0: 	right.iLocation = TAudioChannelGain::ERight;
sl@0: 	iDesiredChannels.AppendL(left);
sl@0: 	iDesiredChannels.AppendL(right);
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // Destructor
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: CLogicalAudioGainControl::~CLogicalAudioGainControl()
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::~CLogicalAudioGainControl *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	iActiveChannels.Close();
sl@0: 	iDesiredChannels.Close();
sl@0: 	iGainObservers.Close();
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControl
sl@0: // CLogicalAudioGainControl::GetMaxGain
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CLogicalAudioGainControl::GetMaxGain(TInt& aMaxGain) const
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::GetMaxGain *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	// TODO: Fix this when the MMRC server is available
sl@0: 	// This adaptationGain pointer will be replaced by the a pointer gotten from 
sl@0: 	// the "control mechanism" provided by the real MMRC server
sl@0: 	TInt err = KErrNotReady;
sl@0: 	if(iAdaptationGain)
sl@0: 		{
sl@0: 		err = iAdaptationGain->GetMaxGain(aMaxGain);
sl@0: 		}
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControl
sl@0: // CLogicalAudioGainControl::GetMaxRampTime
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CLogicalAudioGainControl::GetMaxRampTime(TTimeIntervalMicroSeconds& aMaxRampTime) const
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::GetMaxRampTime *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err = KErrNone;
sl@0: 	aMaxRampTime = KDefaultMaxRampTime;
sl@0: 	if(iAdaptationGain)
sl@0: 		{
sl@0: 		err = iAdaptationGain->GetMaxRampTime(aMaxRampTime);
sl@0: 		}
sl@0: 	DP0_RET(err, "%d");
sl@0: 	} 
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControl
sl@0: // CLogicalAudioGainControl::GetGain
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CLogicalAudioGainControl::GetGain(RArray<TAudioChannelGain>& aChannels) const
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::GetGain *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err = KErrNone;
sl@0: 	TInt count = iDesiredChannels.Count();
sl@0: 	aChannels.Reset();
sl@0: 	for (TUint i(0); i < count; i++)
sl@0: 		{
sl@0: 		TInt err = aChannels.Append(iDesiredChannels[i]);
sl@0: 		}
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControl
sl@0: // CLogicalAudioGainControl::SetGain
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CLogicalAudioGainControl::SetGain(RArray<TAudioChannelGain>& aChannels, TUid aRampOperation, const TTimeIntervalMicroSeconds& aRampDuration)
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::SetGain *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err = KErrNone;
sl@0: 
sl@0: 	iDesiredRampTime = static_cast<TInt>(aRampDuration.Int64());
sl@0: 	iDesiredRampOperation = aRampOperation;
sl@0: 
sl@0: 	// The gain values are clippped to MaxGain. 
sl@0: 	TInt a3fMaxGain = 0;
sl@0: 	if(iAdaptationGain)
sl@0: 		{
sl@0: 		err = iAdaptationGain->GetMaxGain(a3fMaxGain);
sl@0: 		}
sl@0: 
sl@0: 	if(err == KErrNone)
sl@0: 		{
sl@0: 		iDesiredChannels.Reset();
sl@0: 		TUint count = aChannels.Count();
sl@0: 		TAudioChannelGain gainChannel;
sl@0: 		for (TUint i(0); i < count; i++)
sl@0: 			{
sl@0: 			gainChannel = aChannels[i];
sl@0: 			// 
sl@0: 			if(gainChannel.iGain > a3fMaxGain)
sl@0: 				{
sl@0: 				gainChannel.iGain = a3fMaxGain;
sl@0: 				}
sl@0: 			else if(gainChannel.iGain < 0)
sl@0: 				{
sl@0: 				err = KErrArgument;
sl@0: 				break;
sl@0: 				}
sl@0: 			
sl@0: 			err = iDesiredChannels.Append( gainChannel );
sl@0: 			if(err != KErrNone)
sl@0: 				{
sl@0: 				break;
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if(err == KErrNone)
sl@0: 		{
sl@0: 		if(iSettingsObserver)
sl@0: 			{
sl@0: 			iSettingsObserver->ReceiveComponentSettingsChange(iType, EComponentAlterationGain);
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControl
sl@0: // CLogicalAudioGainControl::SetGain
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CLogicalAudioGainControl::SetGain(RArray<TAudioChannelGain>& aChannels)
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::SetGain *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err = KErrNone;
sl@0: 	err = SetGain(aChannels, KNullUid, 0);
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControl
sl@0: // CLogicalAudioGainControl::RegisterAudioGainControlObserver
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CLogicalAudioGainControl::RegisterAudioGainControlObserver(MAudioGainControlObserver& aObserver)
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::RegisterAudioGainControlObserver *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err = iGainObservers.Find(&aObserver);
sl@0: 	if( err != KErrNotFound )
sl@0: 		{
sl@0: 		err = KErrAlreadyExists;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		err = iGainObservers.Append(&aObserver);
sl@0: 		}
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControl
sl@0: // CLogicalAudioGainControl::UnregisterAudioGainControlObserver
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CLogicalAudioGainControl::UnregisterAudioGainControlObserver(MAudioGainControlObserver& aObserver)
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::UnregisterAudioGainControlObserver *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt idxOrErr = iGainObservers.Find(&aObserver);
sl@0: 	if( idxOrErr != KErrNotFound )
sl@0: 		{
sl@0: 		iGainObservers.Remove(idxOrErr);
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioProcessingUnit
sl@0: // CLogicalAudioGainControl::IsTypeOf
sl@0: // ---------------------------------------------------------------------------
sl@0: TBool CLogicalAudioGainControl::IsTypeOf(TUid aTypeId) const
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::IsTypeOf *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TBool result = EFalse;
sl@0: 	if (iType == aTypeId)
sl@0: 		{
sl@0: 		result = ETrue;
sl@0: 		}
sl@0: 	DP0_RET(result, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioProcessingUnit
sl@0: // CLogicalAudioGainControl::Interface
sl@0: // ---------------------------------------------------------------------------
sl@0: TAny* CLogicalAudioGainControl::Interface(TUid aType)
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::GetInterface *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	MAudioGainControl* ptr = NULL;
sl@0: 	if(aType==KUidAudioGainControl)
sl@0: 		{
sl@0: 		ptr = this;
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	return ptr;
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControlObserver
sl@0: // CLogicalAudioGainControl::MaxRampTimeChanged
sl@0: // ---------------------------------------------------------------------------
sl@0: void CLogicalAudioGainControl::MaxRampTimeChanged(MAudioGainControl& /*aGain*/)
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::MaxRampTimeChanged *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TUint count = iGainObservers.Count();
sl@0: 	for ( TUint idx(0); idx < count; idx++ )
sl@0: 		{
sl@0: 		iGainObservers[idx]->MaxRampTimeChanged(*this);
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControlObserver
sl@0: // CLogicalAudioGainControl::MaxGainChanged
sl@0: // ---------------------------------------------------------------------------
sl@0: void CLogicalAudioGainControl::MaxGainChanged(MAudioGainControl& /*aGain*/)
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::MaxGainChanged *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TUint count = iGainObservers.Count();
sl@0: 	for ( TUint idx(0); idx < count; idx++ )
sl@0: 		{
sl@0: 		iGainObservers[idx]->MaxGainChanged(*this);
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // from class MAudioGainControlObserver
sl@0: // CLogicalAudioGainControl::GainChanged
sl@0: // ---------------------------------------------------------------------------
sl@0: void CLogicalAudioGainControl::GainChanged(MAudioGainControl& /*aGain*/, TInt aError)
sl@0: 	{
sl@0: 	DP_CONTEXT(CLogicalAudioGainControl::GainChanged *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TUint count = iDesiredChannels.Count();
sl@0: 	iActiveChannels.Reset();
sl@0: 	for(TUint i=0; i<count; i++)
sl@0: 		{
sl@0: 		iActiveChannels.Append(iDesiredChannels[i]);
sl@0: 		}
sl@0: 	count = iGainObservers.Count();
sl@0: 	for ( TUint idx(0); idx < count; idx++ )
sl@0: 		{
sl@0: 		iGainObservers[idx]->GainChanged(*this, aError);
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	}