mmfenh/enhancedmediaclient/Client/src/Components/AudioEffects/StereoWideningEffectImpl.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mmfenh/enhancedmediaclient/Client/src/Components/AudioEffects/StereoWideningEffectImpl.cpp Tue Feb 02 01:08:46 2010 +0200
@@ -0,0 +1,394 @@
+/*
+* 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 "StereoWideningEffectImpl.h"
+#include <StereoWideningBase.h>
+#include <ControlObserver.h>
+
+using namespace multimedia;
+
+CStereoWideningEffect::CStereoWideningEffect()
+ {
+ // No Impl
+ }
+
+CStereoWideningEffect::~CStereoWideningEffect()
+ {
+ delete iPrevStereoWideningProxy;
+ delete iStereoWideningProxy;
+ iObservers.Close();
+ }
+
+TInt CStereoWideningEffect::PostConstructor()
+ {
+ TRAPD( status, CEffectControlBase::ConstructL(KUidStereoWideningEffect) );
+ return status;
+ }
+
+// From MControl begins
+TInt CStereoWideningEffect::AddObserver( MControlObserver& aObserver )
+ {
+ return iObservers.Append(&aObserver);
+ }
+
+TInt CStereoWideningEffect::RemoveObserver( MControlObserver& aObserver )
+ {
+ TInt index = iObservers.Find(&aObserver);
+ if( index != KErrNotFound )
+ {
+ iObservers.Remove(index);
+ }
+ return index;
+ }
+
+TUid CStereoWideningEffect::Type()
+ {
+ return KStereoWideningEffectControl;
+ }
+
+TControlType CStereoWideningEffect::ControlType()
+ {
+ return EEffectControl;
+ }
+
+// From MControl ends
+
+// From MEffectControl begins
+TInt CStereoWideningEffect::Apply()
+ {
+ return DoApply();
+ }
+
+// From MEffectControl ends
+
+TInt CStereoWideningEffect::DoApply()
+ {
+ TInt error(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ TRAP(error,iStereoWideningProxy->ApplyL());
+ }
+ else
+ {
+ error = KErrNotReady;
+ }
+ return error;
+ }
+
+// From MStereoWideningEffect begins
+/**
+* Check if continuous level is supported for stereo widening.
+* @since 5.0
+* @param ETrue if continuous level is supported for stereo widening. If this returns
+* EFalse, then the adaptation is actually setting the level to the nearest supported discrete
+* value, when SetStereoWidenlingLevelL is called.
+* @return Error Code
+*/
+TInt CStereoWideningEffect::IsContinuousLevelSupported(TBool& aSupported)
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ aSupported = iStereoWideningProxy->IsContinuousLevelSupported();
+ }
+ else
+ {
+ status = KErrNotReady;
+ }
+ return status;
+ }
+
+/**
+* Set stereo widening level.
+* @since 5.0
+* @param aLevel Stereo widening level ranges from 0-100, where 0 is None and 100 is Maximum widening.
+*/
+TInt CStereoWideningEffect::SetStereoWideningLevel( TInt aLevel )
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ TRAP(status,iStereoWideningProxy->SetStereoWideningLevelL(aLevel));
+ }
+ else
+ {
+ status = KErrNotReady;
+ }
+ return status;
+ }
+
+/**
+* Get the stereo widening settings.
+* @since 5.0
+* @param aLevel Gets the Current Stereo widening level
+* @return Error Code
+*/
+TInt CStereoWideningEffect::StereoWideningLevel(TInt& aLevel)
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ aLevel = iStereoWideningProxy->StereoWideningLevel();
+ }
+ else
+ {
+ status = KErrNotReady;
+ }
+ return status;
+ }
+
+// From MStereoWideningEffect ends
+
+// From MAudioEffectControl
+/**
+* Disable the effect
+* @since 5.0
+*/
+TInt CStereoWideningEffect::Disable()
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ TRAP(status,iStereoWideningProxy->DisableL());
+ }
+ else
+ {
+ status = KErrNotReady;
+ }
+ return status;
+ }
+
+/**
+* Enable the effect
+* @since 5.0
+*/
+TInt CStereoWideningEffect::Enable()
+ {
+ TInt status(KErrNone);
+ RDebug::Print(_L("CStereoWideningEffect::Enable() [%x]"),iStereoWideningProxy);
+ if(iStereoWideningProxy)
+ {
+ TRAP(status,iStereoWideningProxy->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 CStereoWideningEffect::Enforce( TBool &aEnforced )
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ TRAP(status,iStereoWideningProxy->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 CStereoWideningEffect::HaveUpdateRights(TBool &aHaveUpdateRights)
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ aHaveUpdateRights = iStereoWideningProxy->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 CStereoWideningEffect::IsEnabled(TBool &aEnabled)
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ aEnabled = iStereoWideningProxy->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 CStereoWideningEffect::IsEnforced(TBool &aEnforced)
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ aEnforced = iStereoWideningProxy->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 CStereoWideningEffect::Uid(TUid &aUid)
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ aUid = iStereoWideningProxy->Uid();
+ }
+ else
+ {
+ status = KErrNotReady;
+ }
+ return status;
+ }
+// From MAudioEffectControl Ends
+
+
+// From CEffectControlBase begins
+void CStereoWideningEffect::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 CStereoWideningEffect::CreateEffectProxy()
+ {
+ TInt status(KErrNone);
+ status = GetMessageHandle(iMsgHndlrHandlePckg);
+ if(status != KErrNone)
+ {
+ return status;
+ }
+ iCustomCommand = GetCustomCommand();
+ if(!iCustomCommand)
+ {
+ return KErrNotReady;
+ }
+
+ TRAP(status,iStereoWideningProxy = CStereoWideningProxy::NewL(iMsgHndlrHandlePckg, *iCustomCommand, NULL));
+ if(status == KErrNone)
+ {
+ TRAP(status,iStereoWideningProxy->RegisterObserverL(*this));
+ }
+
+ return status;
+ }
+
+TInt CStereoWideningEffect::DeleteEffectProxy()
+ {
+ TInt status(KErrNone);
+ if(iStereoWideningProxy)
+ {
+ iPrevStereoWideningProxy = iStereoWideningProxy;
+ }
+ iStereoWideningProxy = NULL;
+ return status;
+ }
+
+TInt CStereoWideningEffect::SavePreviousSettings()
+ {
+ TInt status(KErrNone);
+ if(iPrevStereoWideningProxy)
+ {
+ TBool enforce = iPrevStereoWideningProxy->IsEnforced();
+ iStereoWideningProxy->EnforceL(enforce);
+
+ TBool enable = iPrevStereoWideningProxy->IsEnabled();
+ if(enable)
+ {
+ iStereoWideningProxy->EnableL();
+ }
+
+ delete iPrevStereoWideningProxy;
+ iPrevStereoWideningProxy = NULL;
+ }
+ return status;
+ }
+
+ void CStereoWideningEffect::EffectChanged( const CAudioEffect* /*aObservedEffect*/, TUint8 aEvent )
+ {
+ for ( TInt i = 0; i < iObservers.Count(); i++ )
+ {
+ iObservers[i]->Event(this,aEvent,NULL);
+ }
+ }
+
+// End of file