/*

 * 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 AudioEqualizer effect message handler class.

 *

 */

 // INCLUDE FILES

 #include "AudioEqualizerMessageHandler.h"

 #include "AudioEqualizerMessageTypes.h"

 #include <AudioEqualizerBase.h>

 #include "EffectDataQueItem.h"

 #ifdef _DEBUG

 #include <e32svr.h>

 #endif

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

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

 // might leave.

 //

 CAudioEqualizerMessageHandler::CAudioEqualizerMessageHandler(

 	CAudioEqualizer* aAudioEqualizer )

     :	CMMFObject(KUidAudioEqualizerEffect),

     	iAudioEqualizer(NULL),

     	iMessage(NULL),

     	iRegistered(EFalse),

     	iEffectDataQue(NULL)

     {

     iAudioEqualizer = aAudioEqualizer;

     }

 EXPORT_C CAudioEqualizerMessageHandler* CAudioEqualizerMessageHandler::NewL(

 	TAny* aCustomInterface )

     {

     CAudioEqualizer* audioEqualizer = (CAudioEqualizer*)aCustomInterface;

     CAudioEqualizerMessageHandler* self = new (ELeave) CAudioEqualizerMessageHandler(audioEqualizer);

 	self->ConstructL();

     return self;

     }

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

 // CAudioEqualizerMessageHandler::ConstructL

 // Symbian 2nd phase constructor can leave.

 // Create and initializes the effect data queue.

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

 //

 void CAudioEqualizerMessageHandler::ConstructL()

 	{

 	iEffectDataQue = new(ELeave) TSglQue<CEffectDataQueItem>(_FOFF(CEffectDataQueItem, iLink));

 	}

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

 // CAudioEqualizerMessageHandler::~CAudioEqualizerMessageHandler

 // Before going away, unregister with the CI AudioEqualizer object.

 // The observation message must be completed if outstanding.

 // The effect data queue must be emptied and destroyed.

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

 //

 CAudioEqualizerMessageHandler::~CAudioEqualizerMessageHandler()

 	{

 #ifdef _DEBUG

     RDebug::Print(_L("CAudioEqualizerMessageHandler::~CAudioEqualizerMessageHandler"));

 #endif

     if(iAudioEqualizer)

 	    iAudioEqualizer->UnRegisterObserver(*this);

 	iRegistered = EFalse;

 	if(iMessage)

 	{

 		if ( !iMessage->IsCompleted() )

 			{

 			iMessage->Complete(KErrCancel);

 			delete iMessage;

 			}

 	}

     if ( iEffectDataQue )

         {

         CEffectDataQueItem* queItem;

         while ( !iEffectDataQue->IsEmpty() )

             {

             queItem = iEffectDataQue->First();

             iEffectDataQue->Remove(*queItem);

             delete queItem;

             }

         delete iEffectDataQue;

         }

     delete iAudioEqualizer;

 	}

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

 // CAudioEqualizerMessageHandler::HandleRequest

 // (other items were commented in a header).

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

 //

 void CAudioEqualizerMessageHandler::HandleRequest(

 	TMMFMessage& aMessage )

 	{

 	ASSERT(aMessage.Destination().InterfaceId() == KUidAudioEqualizerEffect);

 	TRAPD(error,DoHandleRequestL(aMessage));

 	if ( error )

 		{

 		aMessage.Complete(error);

 		}

 	}

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

 // CAudioEqualizerMessageHandler::DoHandleRequestL

 // Dispatches the message to the appropriate handler.

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

 //

 void CAudioEqualizerMessageHandler::DoHandleRequestL(

 	TMMFMessage& aMessage )

 	{

 	switch( aMessage.Function() )

 		{

 		case EAefInitialize:

 			{

 			DoInitializeL(aMessage);

 			break;

 			}

 		case EAefInitializeBand:

 			{

 			DoInitializeBandL(aMessage);

 			break;

 			}

 		case EAefGetNumberOfBands:

 			{

 			DoGetNumberOfBandsL(aMessage);

 			break;

 			}

 		case EAefApply:

 			{

 			DoApplyL(aMessage);

 			break;

 			}

 		case EAefApplyBand:

 			{

 			DoApplyBandL(aMessage);

 			break;

 			}

 		case EAefObserve:

 			{

 			DoObserveL(aMessage);

 			break;

 			}

 		default:

 			{

 			aMessage.Complete(KErrNotSupported);

 			}

 		}

 	}

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

 // CAudioEqualizerMessageHandler::DoInitializeL

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

 //

 void CAudioEqualizerMessageHandler::DoInitializeL(TMMFMessage& aMessage)

 	{

 #ifdef _DEBUG

     RDebug::Print(_L("CAudioEqualizerMessageHandler::DoInitializeL"));

 #endif

 	aMessage.WriteDataToClient(iAudioEqualizer->DoEffectData());

 	aMessage.Complete(KErrNone);

 	}

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

 // CAudioEqualizerMessageHandler::DoInitializeBandL

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

 //

 void CAudioEqualizerMessageHandler::DoInitializeBandL(TMMFMessage& aMessage)

 	{

 #ifdef _DEBUG

     RDebug::Print(_L("CAudioEqualizerMessageHandler::DoInitializeBandL"));

 #endif

 	TUint8 band = 0;

 	TPckgBuf<TUint8> bandPckg;

     aMessage.ReadData1FromClient(bandPckg);

     band = bandPckg();

 	aMessage.WriteDataToClient(iAudioEqualizer->DoBandDataL(band, EFalse));

 	aMessage.Complete(KErrNone);

 	}

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

 // CAudioEqualizerMessageHandler::DoGetNumberOfBandsL

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

 //

 void CAudioEqualizerMessageHandler::DoGetNumberOfBandsL(TMMFMessage& aMessage)

 	{

 #ifdef _DEBUG

     RDebug::Print(_L("CAudioEqualizerMessageHandler::DoGetNumberOfBandsL"));

 #endif

 	TUint8 band = iAudioEqualizer->NumberOfBands();

 	TPckgBuf<TUint8> bandPckg(band);

 	aMessage.WriteDataToClient(bandPckg);

 	aMessage.Complete(KErrNone);

 	}

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

 // CAudioEqualizerMessageHandler::DoApplyL

 // Extracts the data from the message. The client AudioEqualizer

 // data is applied to the CI AudioEqualizer object.

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

 //

 void CAudioEqualizerMessageHandler::DoApplyL(

 	TMMFMessage& aMessage )

 	{

 #ifdef _DEBUG

     RDebug::Print(_L("CAudioEqualizerMessageHandler::DoApplyL"));

 #endif

     TEfAudioEqualizerDataPckg audioEqualizerPckgFromClient;

     aMessage.ReadData1FromClient(audioEqualizerPckgFromClient);

 	iAudioEqualizer->SetEffectData(audioEqualizerPckgFromClient);

 //	iAudioEqualizer->ApplyL();

 	aMessage.Complete(KErrNone);

 	}

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

 // CAudioEqualizerMessageHandler::DoApplyBandL

 // Extracts the data from the message. The client Audio Equalizer

 // band data is applied to the CI AudioEqualizer object.

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

 //

 void CAudioEqualizerMessageHandler::DoApplyBandL(

 	TMMFMessage& aMessage )

 	{

 #ifdef _DEBUG

     RDebug::Print(_L("CAudioEqualizerMessageHandler::DoApplyBandL"));

 #endif

     TEfAudioEqualizerBandDataPckg audioEqualizerBandDataPckgFromClient;

     HBufC8* bandDataBuf = HBufC8::NewL(iAudioEqualizer->NumberOfBands() * sizeof(TEfAudioEqualizerBand));

 	TPtr8 des = bandDataBuf->Des();

 	des.SetLength(bandDataBuf->Size());

 	aMessage.ReadData1FromClient(des);

     //aMessage.ReadData1FromClient(audioEqualizerBandDataPckgFromClient);

 	//iAudioEqualizer->SetBandDataL(1,audioEqualizerBandDataPckgFromClient);

 	iAudioEqualizer->SetBandDataL(2,des);

 	delete bandDataBuf;

 	iAudioEqualizer->ApplyL();

 	aMessage.Complete(KErrNone);

 	}

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

 // CAudioEqualizerMessageHandler::DoObserveL

 // Receives the observation request message and depending

 // on the status of the effect data queue, the message is

 // completed immediately or saved for later completion.

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

 //

 void CAudioEqualizerMessageHandler::DoObserveL(

 	TMMFMessage& aMessage )

 	{

 #ifdef _DEBUG

     RDebug::Print(_L("CAudioEqualizerMessageHandler::DoObserveL"));

 #endif

 	if ( !iRegistered )

 		{

 		iAudioEqualizer->RegisterObserverL(*this);

 		iRegistered = ETrue;

 		}

 	if ( iEffectDataQue->IsEmpty() )

 		{

 		//iMessage = &aMessage;

 		iMessage = new(ELeave) TMMFMessage(aMessage);

 		}

 	else

 		{

 		TEfAudioEqualizerCombinedDataPckg dataPckg;

 		CEffectDataQueItem* item = iEffectDataQue->First();

 		dataPckg.Copy(item->EffectData());

 		aMessage.WriteDataToClient(dataPckg);

 		aMessage.Complete(KErrNone);

 		iEffectDataQue->Remove(*item);

 		delete item;

 		}

 	}

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

 // CAudioEqualizerMessageHandler::EffectChanged

 // The CI AudioEqualizer object has changed state.

 // The observation message is completed if no data has been

 // queued up. Otherwise, the CI AudioEqualizer object's data is

 // packaged and queued.

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

 //

 void CAudioEqualizerMessageHandler::EffectChanged(

 	const CAudioEffect* aAudioEffect,

 	TUint8 aEvent )

 	{

 #ifdef _DEBUG

     RDebug::Print(_L("CAudioEqualizerMessageHandler::EffectChanged"));

 #endif

 	TEfAudioEqualizerCombined data;

 	data.iAudioEqualizerDataValid = EFalse;

 	data.iAudioEqualizerBandDataValid = EFalse;

 	if ( aEvent < MAudioEffectObserver::KSpecificEffectBase )

 		{

 		data.iEnabled = ((CAudioEqualizer*)aAudioEffect)->IsEnabled();

 		data.iHaveUpdateRights = ((CAudioEqualizer*)aAudioEffect)->HaveUpdateRights();

 		data.iEnforced = ((CAudioEqualizer*)aAudioEffect)->IsEnforced();

 		data.iAudioEqualizerDataValid = ETrue;

 		}

 	else

 		{

 		TUint8 band = aEvent - MAudioEffectObserver::KSpecificEffectBase;

 		data.iBandId = band;

 		data.iBandLevel = ((CAudioEqualizer*)aAudioEffect)->BandLevel(band);

 		data.iBandWidth = ((CAudioEqualizer*)aAudioEffect)->BandWidth(band);

 		data.iCenterFrequency = ((CAudioEqualizer*)aAudioEffect)->CenterFrequency(band);

 		data.iCrossoverFrequency = ((CAudioEqualizer*)aAudioEffect)->CrossoverFrequency(band);

 		data.iAudioEqualizerBandDataValid = ETrue;

 		}

 	TEfAudioEqualizerCombinedDataPckg dataPckg(data);

 	if ( iMessage && !iMessage->IsCompleted() && iEffectDataQue->IsEmpty() )

 		{

 		iMessage->WriteDataToClient(dataPckg);

 		iMessage->Complete(KErrNone);

 		delete iMessage;

 		iMessage = NULL;

 		}

 	else

 		{

 		// Saves the data and complete an observation message next time around.

 		HBufC8* data = NULL;

 		TRAPD(err1,data = dataPckg.AllocL());

 		if(!err1)

 			{

 				//CleanupStack::PushL(data);

 				CEffectDataQueItem* item = NULL;

 				TRAPD(err2,item = CEffectDataQueItem::NewL(data));

 				if(!err2)

 				{

 					iEffectDataQue->AddLast(*item);

 				}

 				else

 				{

 					delete data;

 				}

 			}

 		else

 			{

 #ifdef _DEBUG

 				RDebug::Print(_L("CAudioEqualizerMessageHandler::EffectChanged Error Allocating Memory %d"),err1);

 #endif

 			}

 		}

 	}

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

 // End of File