diff -r 000000000000 -r 71ca22bcf22a mmfenh/enhancedmediaclient/Client/src/Components/AudioEffects/EqualizerEffectImpl.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmfenh/enhancedmediaclient/Client/src/Components/AudioEffects/EqualizerEffectImpl.cpp	Tue Feb 02 01:08:46 2010 +0200
@@ -0,0 +1,485 @@
+/*
+* 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 "EqualizerEffectImpl.h"
+#include <AudioEqualizerBase.h>
+#include <ControlObserver.h>
+
+using namespace multimedia;
+
+CEqualizerEffect::CEqualizerEffect()
+    {
+    // No Impl
+    }
+
+CEqualizerEffect::~CEqualizerEffect()
+    {
+	delete iPrevEqualizerProxy;
+	delete  iEqualizerProxy;
+	iObservers.Close();
+    }
+
+TInt CEqualizerEffect::PostConstructor()
+    {
+    TRAPD( status, CEffectControlBase::ConstructL(KUidAudioEqualizerEffect) );
+    return status;
+    }
+
+// From MControl begins
+TInt CEqualizerEffect::AddObserver( MControlObserver& aObserver )
+    {
+    return iObservers.Append(&aObserver);
+    }
+
+TInt CEqualizerEffect::RemoveObserver( MControlObserver& aObserver )
+    {
+	TInt index = iObservers.Find(&aObserver);
+	if( index != KErrNotFound )
+		{
+		iObservers.Remove(index);
+		}
+	return index;
+    }
+
+TUid CEqualizerEffect::Type()
+    {
+    return KEqualizerEffectControl;
+    }
+
+TControlType CEqualizerEffect::ControlType()
+    {
+	return EEffectControl;
+    }
+
+// From MControl ends
+
+// From MEffectControl begins
+TInt CEqualizerEffect::Apply()
+    {
+    return DoApply();
+    }
+
+// From MEffectControl ends
+
+TInt CEqualizerEffect::DoApply()
+    {
+    TInt error(KErrNone);    
+	if(iEqualizerProxy)
+		{
+		TRAP(error,iEqualizerProxy->ApplyL());	
+		}	
+	else
+		{
+		error = KErrNotReady;	
+		}			
+    return error;    
+    }
+
+// From MEqualizerEffect begins
+/**
+* Get the band level in mB for the specified band
+* @since 5.0
+* @param aBand Frequency Band
+* @return Returns the band level in mB for the specified band
+*/
+TInt CEqualizerEffect::BandLevel( TInt& aBand, TInt& aBandLevel )
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		// status here returns the Band Level	
+		//TUint8 band(aBand);
+		//TInt32 bandlevel;
+		aBandLevel = iEqualizerProxy->BandLevel(aBand);	
+		//aBandLevel = bandlevel;
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+/**
+* Get the band width in Hz for the specified band.
+* @since 5.0
+* @param aBand Frequency Band
+* @return The band width in Hz for the specified band
+*/
+TInt CEqualizerEffect::BandWidth( TInt& aBand, TInt& aBandWidth )
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		TRAP(aBandWidth,iEqualizerProxy->BandWidth(aBand));	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+/**
+* Get the center frequency in Hz for a given band
+* @since 5.0
+* @param aBand Frequency Band
+* @return The center frequency in Hz for a given band.
+*/
+TInt CEqualizerEffect::CenterFrequency( TInt& aBand, TInt& aCenterFrequency ) 
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		aCenterFrequency = iEqualizerProxy->CenterFrequency(aBand);	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+/**
+* Get the cross-over frequency between the given frequency band (aBand) and the next band
+* @since 5.0
+* @param aBand Frequency Band
+* @return Crossover frequency.
+*/
+TInt CEqualizerEffect::CrossoverFrequency( TInt& aBand, TInt& aCrossoverFreq ) 
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		aCrossoverFreq = iEqualizerProxy->CenterFrequency(aBand);	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+/**
+* Get the dB range in mB for the equalizer
+* @since 5.0
+* @param aMin Minimum level in dB
+* @param aMin Maximum level in dB
+*/
+TInt CEqualizerEffect::DbLevelLimits( TInt& aMin, TInt& aMax )
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		TInt32 min,max;	
+		TRAP(status,iEqualizerProxy->DbLevelLimits(min,max));	
+		aMin = min;
+		aMax = max;
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+/**
+* Get number of equalizer bands.
+* @since 5.0
+* @param -
+* @return The number of equalizer bands.
+*/
+TInt CEqualizerEffect::NumberOfBands(TInt& aNumberofBands) 
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		aNumberofBands= iEqualizerProxy->NumberOfBands();	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+/**
+* Sets the equalizer band level value in mB, ranging from Min to Max
+* @since 5.0
+* @param aBand Frequency Band
+* @param aLevel band level in dB, ranges from DbLevelLimits()
+* @return -
+*/
+TInt CEqualizerEffect::SetBandLevel( TInt& aBand, TInt& aLevel )
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		TRAP(status,iEqualizerProxy->SetBandLevelL(aBand,aLevel));	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+// From MAudioEffectControl
+/**
+* Disable the effect
+* @since 5.0
+*/
+TInt CEqualizerEffect::Disable()
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		TRAP(status,iEqualizerProxy->DisableL());	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;				
+	}
+
+/**
+* Enable the effect
+* @since 5.0
+*/
+TInt CEqualizerEffect::Enable()
+	{
+	TInt status(KErrNone);
+	RDebug::Print(_L("CEqualizerEffect::Enable() [%x]"),iEqualizerProxy);
+	if(iEqualizerProxy)
+		{
+		TRAP(status,iEqualizerProxy->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 CEqualizerEffect::Enforce( TBool &aEnforced )
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		TRAP(status,iEqualizerProxy->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 CEqualizerEffect::HaveUpdateRights(TBool &aHaveUpdateRights)
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		aHaveUpdateRights = iEqualizerProxy->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 CEqualizerEffect::IsEnabled(TBool &aEnabled)
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		aEnabled = iEqualizerProxy->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 CEqualizerEffect::IsEnforced(TBool &aEnforced)
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		aEnforced = iEqualizerProxy->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 CEqualizerEffect::Uid(TUid &aUid)
+	{
+	TInt status(KErrNone);
+	if(iEqualizerProxy)
+		{
+		aUid = iEqualizerProxy->Uid();	
+		}	
+	else
+		{
+		status = KErrNotReady;	
+		}			
+	return status;			
+	}
+// From MAudioEffectControl Ends
+
+
+// From CEffectControlBase begins
+void CEqualizerEffect::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();	
+        	}
+        }
+    }
+
+// From CEffectControlBase ends
+
+TInt CEqualizerEffect::CreateEffectProxy()
+	{
+	TInt status(KErrNone);
+	status = GetMessageHandle(iMsgHndlrHandlePckg);
+	if(status != KErrNone)
+		{
+		return status;	
+		}
+	iCustomCommand = GetCustomCommand();		
+	if(!iCustomCommand)
+		{
+		return KErrNotReady;	
+		}
+
+	TRAP(status,iEqualizerProxy = CAudioEqualizerProxy::NewL(iMsgHndlrHandlePckg, *iCustomCommand, NULL));	
+	if(status == KErrNone)
+		{
+		TRAP(status,iEqualizerProxy->RegisterObserverL(*this));	
+		}		
+
+	return status;
+	}
+
+TInt CEqualizerEffect::DeleteEffectProxy()
+	{
+	TInt status(KErrNone);	
+	if(iEqualizerProxy)
+		{
+		iPrevEqualizerProxy = iEqualizerProxy;	
+		}
+	iEqualizerProxy = NULL;	
+	return status;
+	}
+
+TInt CEqualizerEffect::SavePreviousSettings()
+	{
+	TInt status(KErrNone);	
+	if(iPrevEqualizerProxy)
+		{
+		TInt bands = iPrevEqualizerProxy->NumberOfBands();
+		for(TInt i = 1; i <= bands; i++)
+			{	
+			TRAP(status , iEqualizerProxy->SetBandLevelL(i,iPrevEqualizerProxy->BandLevel(i)));	
+			}
+
+		TBool enforce = iPrevEqualizerProxy->IsEnforced();
+		iEqualizerProxy->EnforceL(enforce);	
+
+		TBool enable = iPrevEqualizerProxy->IsEnabled();
+		if(enable)
+			{
+			iEqualizerProxy->EnableL();	
+			}
+
+		delete iPrevEqualizerProxy;
+		iPrevEqualizerProxy = NULL;
+		}				
+	return status;	
+	}
+
+ void CEqualizerEffect::EffectChanged( const CAudioEffect* /*aObservedEffect*/, TUint8 aEvent )
+ 	{
+	for ( TInt i = 0; i < iObservers.Count(); i++ )
+		{
+		iObservers[i]->Event(this,aEvent,NULL);
+		} 		
+ 	}
+
+// End of file