/*

* Copyright (c) 2004 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:   Implementation of the audio equalizer proxy class

*

*/

// INCLUDE FILES

#ifdef _DEBUG

#include <e32svr.h>

#endif

#include "AudioEqualizerProxy.h"

#include "AudioEqualizerEventObserver.h"

#include <CustomInterfaceUtility.h>

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// CAudioEqualizerProxy::CAudioEqualizerProxy

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

//

CAudioEqualizerProxy::CAudioEqualizerProxy(

	TMMFMessageDestinationPckg aMessageHandler,

	MCustomCommand& aCustomCommand,

	CCustomInterfaceUtility* aCustomInterfaceUtility )

	: 	iCustomCommand(&aCustomCommand),

		iMessageHandler(aMessageHandler),

		iCustomInterfaceUtility(aCustomInterfaceUtility)

    {

    }

// Destructor

CAudioEqualizerProxy::~CAudioEqualizerProxy()

    {

    // Remove the custom interface message handler before we destroy the proxy.

    if(iCustomInterfaceUtility)

        iCustomInterfaceUtility->RemoveCustomInterface(iMessageHandler);

	delete iAudioEqualizerEventObserver;

	delete iCustomInterfaceUtility;

	}

// -----------------------------------------------------------------------------

// CAudioEqualizerProxy::NewL

// Static function for creating an instance of the Audio Equalizer object.

// -----------------------------------------------------------------------------

//

EXPORT_C CAudioEqualizerProxy* CAudioEqualizerProxy::NewL(

	TMMFMessageDestinationPckg aMessageHandler,

    MCustomCommand& aCustomCommand,

    CCustomInterfaceUtility* aCustomInterfaceUtility )

    {

    CAudioEqualizerProxy* self = new (ELeave) CAudioEqualizerProxy(aMessageHandler, aCustomCommand, aCustomInterfaceUtility);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

	}

// -----------------------------------------------------------------------------

// CAudioEqualizerProxy::ConstructL

// -----------------------------------------------------------------------------

//

void CAudioEqualizerProxy::ConstructL()

    {

#ifdef _DEBUG

    RDebug::Print(_L("CAudioEqualizerProxy::ConstructL"));

#endif

    iAudioEqualizerEventObserver = CAudioEqualizerEventObserver::NewL(iMessageHandler, *iCustomCommand, *this);

    StartObserver();

    // sends a message to fetch initial data.

    TEfAudioEqualizerDataPckg dataPckgFrom;

	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EAefInitialize, KNullDesC8, KNullDesC8, dataPckgFrom);

	SetEffectData(dataPckgFrom);

	TUint8 band = 0;

	TPckgBuf<TUint8> bandPckg;

	bandPckg() = 0;

	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EAefGetNumberOfBands, KNullDesC8, KNullDesC8, bandPckg);

	band = bandPckg();

	if ( !band ) // Number of bands should be > 0.

		{

		User::Leave(KErrNotReady);

		}

	TEfAudioEqualizerBand bandData;

	TEfAudioEqualizerBandDataPckg bandDataPckg;

	TInt8 numberOfBands = band;

	for(TInt i=1; i<=numberOfBands; i++)

		{

		band = i;

		bandPckg() = band;

		iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EAefInitializeBand, bandPckg, KNullDesC8, bandDataPckg);

		bandData = bandDataPckg();

		if(iBandsData.Append(bandData))

			{

			User::Leave(KErrNoMemory);

			}

		}

	}

// -----------------------------------------------------------------------------

// CAudioEqualizerProxy::ApplyL

// Apply the Audio Equalizer settings.

// -----------------------------------------------------------------------------

//

EXPORT_C void CAudioEqualizerProxy::ApplyL()

	{

#ifdef _DEBUG

    RDebug::Print(_L("CAudioEqualizerProxy::Apply"));

#endif

	if ( !iHaveUpdateRights )

		{

		User::Leave(KErrAccessDenied);

		}

//	TUint32 mask = 1;

	iAudioEqualizerData.iEnabled = iEnabled;

	iAudioEqualizerData.iEnforced = iEnforced;

	iAudioEqualizerData.iHaveUpdateRights = iHaveUpdateRights;

	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EAefApply, DoEffectData(), KNullDesC8);

#ifdef _DEBUG

    RDebug::Print(_L("CAudioEqualizerProxy::Apply - BandChange = %x"), iBandChange);

#endif

	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EAefApplyBand, DoBandDataL(1, ETrue), KNullDesC8);

		iBandChange = 0; // clear flags

	}

// -----------------------------------------------------------------------------

// CAudioEqualizerProxy::StartObserver

// Starts the event observer. The event observer monitors asynchronous events

// from the message handler.

// -----------------------------------------------------------------------------

//

void CAudioEqualizerProxy::StartObserver()

	{

#ifdef _DEBUG

    RDebug::Print(_L("CAudioEqualizerProxy::StartObserver"));

#endif

	iAudioEqualizerEventObserver->Start();

	}

// -----------------------------------------------------------------------------

// CAudioEqualizerProxy::AudioEqualizerEvent

// Checks which data member has changed and notify the observers.

// -----------------------------------------------------------------------------

//

void CAudioEqualizerProxy::AudioEqualizerEventL(

	const TDesC8& aBuffer )

	{

#ifdef _DEBUG

    RDebug::Print(_L("CAudioEqualizerProxy::AudioEqualizerEventL"));

#endif

	TEfAudioEqualizerCombinedDataPckg dataPckgFrom;

	dataPckgFrom.Copy(aBuffer);

	TEfAudioEqualizerCombined newEqualizerCombinedData = dataPckgFrom();

	TUint8 event = 0;

	if ( newEqualizerCombinedData.iAudioEqualizerDataValid ) // Equalizer Data Changed

		{

		if ( newEqualizerCombinedData.iEnabled != iAudioEqualizerData.iEnabled )

			{

			iAudioEqualizerData.iEnabled = newEqualizerCombinedData.iEnabled;

			iEnabled = newEqualizerCombinedData.iEnabled;

			if ( iAudioEqualizerData.iEnabled )

				{

				event = MAudioEffectObserver::KEnabled;

				}

			else

				{

				event = MAudioEffectObserver::KDisabled;

				}

			}

		else if ( newEqualizerCombinedData.iEnforced != iAudioEqualizerData.iEnforced )

			{

			iAudioEqualizerData.iEnforced = newEqualizerCombinedData.iEnforced;

			iEnforced = newEqualizerCombinedData.iEnforced;

			if ( iAudioEqualizerData.iEnforced )

				{

				event = MAudioEffectObserver::KEnforced;

				}

			else

				{

				event = MAudioEffectObserver::KNotEnforced;

				}

			}

		else if ( newEqualizerCombinedData.iHaveUpdateRights != iAudioEqualizerData.iHaveUpdateRights )

			{

			iAudioEqualizerData.iHaveUpdateRights = newEqualizerCombinedData.iHaveUpdateRights;

			iHaveUpdateRights = newEqualizerCombinedData.iHaveUpdateRights;

			if ( iAudioEqualizerData.iHaveUpdateRights )

				{

				event = MAudioEffectObserver::KGainedUpdateRights;

				}

			else

				{

				event = MAudioEffectObserver::KLostUpdateRights;

				}

			}

		}

	else if ( newEqualizerCombinedData.iAudioEqualizerBandDataValid ) // Equalizer band data changed

		{

		TInt bandId = newEqualizerCombinedData.iBandId-1;

		iBandsData[bandId].iBandLevel = newEqualizerCombinedData.iBandLevel;

		iBandsData[bandId].iBandWidth = newEqualizerCombinedData.iBandWidth;

		iBandsData[bandId].iCenterFrequency = newEqualizerCombinedData.iCenterFrequency;

		iBandsData[bandId].iCrossoverFrequency = newEqualizerCombinedData.iCrossoverFrequency;

		event = MAudioEffectObserver::KSpecificEffectBase + newEqualizerCombinedData.iBandId;

		}

	if (!event)

		return;

	for ( TInt i = 0; i < iObservers.Count(); i++ )

		{

		iObservers[i]->EffectChanged(this, event);

		}

	}

// ========================== OTHER EXPORTED FUNCTIONS =========================