diff -r 000000000000 -r 71ca22bcf22a mmfenh/enhancedmediaclient/Client/src/Components/AudioEffects/RoomLevelEffectImpl.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmfenh/enhancedmediaclient/Client/src/Components/AudioEffects/RoomLevelEffectImpl.cpp	Tue Feb 02 01:08:46 2010 +0200
@@ -0,0 +1,475 @@
+/*
+* Copyright (c) 2006 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:  Project file for EnhancedMediaClient Utility
+*
+*/
+
+
+#include "RoomLevelEffectImpl.h"
+#include <RoomLevelBase.h>
+#include <ControlObserver.h>
+#include "ReverbEffectImpl.h"
+
+#ifdef _DEBUG
+#include <e32debug.h>
+#define _U(s) _L(s)
+#define RET_ERR_IF_ERR(err) if (err!=KErrNone) { \
+    RDebug::Print(_L("RET_ERR_IF_ERR:Line[%d]Err[%d]"), __LINE__, err); \
+    RDebug::Print(_U( __FILE__ )); \
+    return err; }
+#else
+#define RET_ERR_IF_ERR(err) if (err!=KErrNone) return err
+#endif // _DEBUG
+
+using namespace multimedia;
+
+CRoomLevelEffect::CRoomLevelEffect()
+    {
+    // No Impl
+    }
+
+CRoomLevelEffect::~CRoomLevelEffect()
+    {
+	delete iPrevRoomLevelProxy;
+	delete  iRoomLevelProxy;
+	iObservers.Close();
+    }
+
+TInt CRoomLevelEffect::PostConstructor()
+    {
+    TRAPD( status, CEffectControlBase::ConstructL(KUidRoomLevelEffect) );
+    return status;
+    }
+
+// From MControl begins
+TInt CRoomLevelEffect::AddObserver( MControlObserver& aObserver )
+    {
+    return iObservers.Append(&aObserver);
+    }
+
+TInt CRoomLevelEffect::RemoveObserver( MControlObserver& aObserver )
+    {
+	TInt index = iObservers.Find(&aObserver);
+	if( index != KErrNotFound )
+		{
+		iObservers.Remove(index);
+		}
+	return index;
+    }
+
+TUid CRoomLevelEffect::Type()
+    {
+    return KRoomLevelEffectControl;
+    }
+
+TControlType CRoomLevelEffect::ControlType()
+    {
+	return EEffectControl;
+    }
+
+// From MControl ends
+
+// From MEffectControl begins
+TInt CRoomLevelEffect::Apply()
+    {
+    return DoApply();
+    }
+
+// From MEffectControl ends
+
+TInt CRoomLevelEffect::DoApply()
+    {
+    TInt error(KErrNone);    
+	if(iRoomLevelProxy)
+		{
+		TRAP(error,iRoomLevelProxy->ApplyL());	
+		}	
+	else
+		{
+		error = KErrNotReady;	
+		}			
+    return error;    
+    }
+
+// From MRoomLevelEffect begins
+/**
+* Gets the RoomLevel current level in mB
+* @since 5.0
+* @return RoomLevel current level
+*/
+TInt CRoomLevelEffect::Level(TInt& aLevel)
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		aLevel = iRoomLevelProxy->Level();	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;						
+	}
+
+/**
+* Gets the RoomLevel current level maximum and minimum in mB
+* @since 5.0
+* @param aMin Minimum current level
+* @param aMax Maximum current level
+* @return -
+*/
+TInt CRoomLevelEffect::LevelRange( TInt& aMin, TInt& aMax )
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		TInt32 min,max;	
+		iRoomLevelProxy->LevelRange(min,max);
+		aMin = min;
+		aMax = max;	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;						
+	}
+
+/**
+* Sets the RoomLevel level, it will leave if aRoomLevel is not within range of Min and Max
+* @since 5.0
+* @param aRoomLevelLevel The RoomLevel level in mB
+*/
+TInt CRoomLevelEffect::SetRoomLevel( TInt aRoomLevel )
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		TRAP(status,iRoomLevelProxy->SetRoomLevelL(aRoomLevel));	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+// From MRoomLevelEffect ends
+
+// From MAudioEffectControl
+/**
+* Disable the effect
+* @since 5.0
+*/
+TInt CRoomLevelEffect::Disable()
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		TRAP(status,iRoomLevelProxy->DisableL());	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+/**
+* Enable the effect
+* @since 5.0
+*/
+TInt CRoomLevelEffect::Enable()
+	{
+	TInt status(KErrNone);
+	RDebug::Print(_L("CRoomLevelEffect::Enable() [%x]"),iRoomLevelProxy);
+	if(iRoomLevelProxy)
+		{
+		TRAP(status,iRoomLevelProxy->EnableL());	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;					
+	}
+
+/**
+* Enforce the effect.
+* @since 5.0
+* @param aEnforced Indicate the effect is to be enforced or not. ETrue = Enforced.
+*/
+TInt CRoomLevelEffect::Enforce( TBool &aEnforced )
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		TRAP(status,iRoomLevelProxy->EnforceL(aEnforced));	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}					
+	return status;		
+	}
+
+/**
+* Check if this effect object currently has update rights.
+* A client can lose update rights in some hardware platforms where there are a limited
+* number of instances of an effect that can exist at the same time. When an effect instance
+* has lost update rights the user can still change settings, but any calls to Apply the
+* settings will be deferred until update rights are regained.
+* @since 5.0
+* @return ETrue if this object currently has rights to update the settings of this effect,
+*         EFalse otherwise.
+*/
+TInt CRoomLevelEffect::HaveUpdateRights(TBool &aHaveUpdateRights)
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		aHaveUpdateRights = iRoomLevelProxy->HaveUpdateRights();	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;	
+	}
+
+/**
+* Check if the effect is enabled
+* @since 5.0
+* @return ETrue if the effect is enabled, EFalse if the effect is disabled.
+*/
+TInt CRoomLevelEffect::IsEnabled(TBool &aEnabled)
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		aEnabled = iRoomLevelProxy->IsEnabled();	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;			
+	}
+
+/**
+* Check if the effect is enforced.
+* @since 5.0
+* @return ETrue if the effect is enforced, EFalse if the effect isn ot enforced.
+*/
+TInt CRoomLevelEffect::IsEnforced(TBool &aEnforced)
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		aEnforced = iRoomLevelProxy->IsEnforced();	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;			
+	}
+
+/*
+* Get the unique identifier of the audio effect
+* @since 5.0
+* @return Unique identifier of the audio effect object.
+*/
+TInt CRoomLevelEffect::Uid(TUid &aUid)
+	{
+	TInt status(KErrNone);
+	if(iRoomLevelProxy)
+		{
+		aUid = iRoomLevelProxy->Uid();	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;			
+	}
+// From MAudioEffectControl Ends
+
+
+// From CEffectControlBase begins
+void CRoomLevelEffect::Event( TEffectControlEvent aEvent )
+    {
+	TInt status(KErrNone);    	
+    // Controller Loaded with ECIBuilderCreated
+    if ( aEvent == ECIBuilderCreated )
+        {
+    	//RDebug::Print(_L("Deleting Proxy"));	
+		status = DeleteEffectProxy();
+		//RDebug::Print(_L("Deleting Proxy [%d]"),status);	
+		status = CreateEffectProxy();	
+		//RDebug::Print(_L("Creating Proxy [%d]"),status);	
+		if(status == KErrNone)
+			{
+			SavePreviousSettings();	
+			}
+		else
+			{
+			for ( TInt i = 0; i < iObservers.Count(); i++ )
+				{
+				iObservers[i]->Event(this,MAudioEffectControl::KDisabled,NULL);
+				} 		
+			}	
+        }
+    else if ( aEvent == EMessageHandlerDeleted )
+        {
+        if(status == KErrNone)
+        	{
+        	DeleteEffectProxy();	
+        	}
+        }
+    }
+
+TInt CRoomLevelEffect::AttachReverb( MReverbControl& aReverb )
+    {
+    TInt status(KErrNone);
+    if ( iCReverbEffect )
+        {
+        status = KErrAlreadyExists;
+        }
+    RET_ERR_IF_ERR( status );
+
+    if ( aReverb.Type() != KReverbEffectControl )
+        {
+        status = KErrArgument;
+        }
+    RET_ERR_IF_ERR( status );
+
+    iCReverbEffect = dynamic_cast<CReverbEffect*>(&aReverb);
+    status = KErrNone;
+    return status;
+    }
+
+TInt CRoomLevelEffect::DetachReverb( MReverbControl& aReverb )
+    {
+    TInt status(KErrNone);
+    if ( aReverb.Type() != KReverbEffectControl )
+        {
+        status = KErrArgument;
+        }
+    RET_ERR_IF_ERR( status );
+
+    status = KErrNotFound;
+    iCReverbEffect = dynamic_cast<CReverbEffect*>(&aReverb);
+    if ( iCReverbEffect == dynamic_cast<CReverbEffect*>(&aReverb) )
+        {
+        status = KErrNone;
+        
+        // Make sure CRoomLevelEffect::AttachReverb is called before proxy gets created.
+        if ( !iCReverbEffect )
+            {
+            status = KErrNotReady;  
+            }
+        RET_ERR_IF_ERR( status );
+
+        // Detach reverb proxy here
+        CEnvironmentalReverb* aReverb(NULL);
+        status = iCReverbEffect->GetCEnvironmentalReverb(aReverb);
+        RET_ERR_IF_ERR( status );
+
+        status = iRoomLevelProxy->DettachReverb(*aReverb);
+        RET_ERR_IF_ERR( status );
+
+        iCReverbEffect = NULL;
+        }
+    return status;
+    }
+
+// From CEffectControlBase ends
+
+TInt CRoomLevelEffect::CreateEffectProxy()
+	{
+	TInt status(KErrNone);
+	status = GetMessageHandle(iMsgHndlrHandlePckg);
+    RET_ERR_IF_ERR( status );
+
+    iCustomCommand = GetCustomCommand();		
+	if(!iCustomCommand)
+		{
+		status = KErrNotReady;	
+		}
+    RET_ERR_IF_ERR( status );
+    
+    // Make sure CRoomLevelEffect::AttachReverb is called before proxy gets created.
+    if ( !iCReverbEffect )
+        {
+        status = KErrNotReady;  
+        }
+    RET_ERR_IF_ERR( status );
+
+	TRAP(status,iRoomLevelProxy = CRoomLevelProxy::NewL(iMsgHndlrHandlePckg, *iCustomCommand, NULL));
+    RET_ERR_IF_ERR( status );
+
+    // Attach reverb proxy here
+    CEnvironmentalReverb* aReverb(NULL);
+    status = iCReverbEffect->GetCEnvironmentalReverb(aReverb);
+    RET_ERR_IF_ERR( status );
+
+    status = iRoomLevelProxy->AttachReverb(*aReverb);
+    RET_ERR_IF_ERR( status );
+    
+    TRAP(status,iRoomLevelProxy->RegisterObserverL(*this));	
+
+	return status;
+	}
+
+TInt CRoomLevelEffect::DeleteEffectProxy()
+	{
+	TInt status(KErrNone);	
+	if(iRoomLevelProxy)
+		{
+		iPrevRoomLevelProxy = iRoomLevelProxy;	
+		}
+	iRoomLevelProxy = NULL;	
+	return status;
+	}
+
+TInt CRoomLevelEffect::SavePreviousSettings()
+	{
+	TInt status(KErrNone);	
+	if(iPrevRoomLevelProxy)
+		{
+		TBool enforce = iPrevRoomLevelProxy->IsEnforced();
+		iRoomLevelProxy->EnforceL(enforce);	
+
+		TBool enable = iPrevRoomLevelProxy->IsEnabled();
+		if(enable)
+			{
+			iRoomLevelProxy->EnableL();	
+			}
+
+		delete iPrevRoomLevelProxy;
+		iPrevRoomLevelProxy = NULL;
+		}				
+	return status;	
+	}
+
+ void CRoomLevelEffect::EffectChanged( const CAudioEffect* /*aObservedEffect*/, TUint8 aEvent )
+ 	{
+	for ( TInt i = 0; i < iObservers.Count(); i++ )
+		{
+		iObservers[i]->Event(this,aEvent,NULL);
+		} 		
+ 	}
+
+// End of file