/*

* Copyright (c) 2010 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:  This class handles connect and disconnect to AccFw.

*

*/

#include <acccongenericid.h>

#include <accpolobjectcon.h>

#include <accpolnamevaluerecord.h>

#include <accconfigfileparser.h>

#include <accpolcommonnamevaluepairs.h>

#include <autoaudiopskeys.h>

#include "cautoaudioasyservice.h"

#include "cautoaudioasypropertyobserver.h"

#include "acc_debug.h"

#define SET_STATE(state) (iState=state)

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

// CAutoAudioAsyService::CAutoAudioAsyService() 

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

CAutoAudioAsyService::CAutoAudioAsyService ()

	: CActive ( EPriorityStandard )

    {

    CActiveScheduler::Add ( this );

    }

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

// CAutoAudioAsyService::NewL ()

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

CAutoAudioAsyService* CAutoAudioAsyService::NewL ()

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::NewL" );

    CAutoAudioAsyService* self = new ( ELeave ) CAutoAudioAsyService ();

    CleanupStack::PushL ( self );

    self->ConstructL ();

    CleanupStack::Pop ( self );

    return self;

    }

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

// CAutoAudioAsyService::ConstructL ()

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

void CAutoAudioAsyService::ConstructL ()

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::ConstructL" );

    User::LeaveIfError ( iAccessoryServer.Connect () );

    User::LeaveIfError ( iAccessoryControl.CreateSubSession ( iAccessoryServer ) );

    SET_STATE ( EServiceStateIdle );	

    }

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

// CAutoAudioAsyService::~CAutoAudioAsyService()

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

CAutoAudioAsyService::~CAutoAudioAsyService ()

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::~CAutoAudioAsyService" );

    Cancel ();

	delete iPropertyObserver;

    iAccessoryControl.CloseSubSession ();

    iAccessoryServer.Close ();

	FreeResources ();

    }

void CAutoAudioAsyService::StartL ()

	{

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::StartL" );

	iPropertyObserver = CAutoAudioAsyPropertyObserver::NewL ( KPSUidAccessoryServices, KPSAutoKeyRTPStreamingConnectionStatus, *this );

	}

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

// CAutoAudioAsyService::PropertyChange ()

// Defined in MAutoAudioAsyPropertyListener interface.

// Receives notifications about RTP Streaming channel property changes. Property changes occur

// when accessory is connected or disconnected or headunit attached or detached

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

void CAutoAudioAsyService::PropertyChange ( RProperty& aProperty, TUid aUid, TUint aKey, TInt aStatus )

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::PropertyChange" );

    TInt propValue;

    TInt status = aProperty.Get ( propValue );

    COM_TRACE_1 ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::PropertyChange -- request property value %d", propValue );

    if ( aUid == KPSUidAccessoryServices && aKey == KPSAutoKeyRTPStreamingConnectionStatus )

        {

        // Check if audio accessory has been connected

        if ( ( status == KErrNone ) && ( aStatus == KErrNone ) )

            {

			if ( propValue == EAudioConnectionStatusUnidirectional ) // Current release supports only UniDirectional, so other key values ignored.

				{

				TInt err;

				switch ( iState )

					{

					case EServiceStateIdle:

						TRAP ( err, ConnectAccessoryL () );

						if ( err != KErrNone )

							{

							COM_TRACE_1 ("[AccFW:AutoAudioAsy] ConnectAccessoryL error %d", err );

							FreeResources (); // switch to EServiceStateIdle							

							}

						break;

					case EServiceStateConnecting:

					case EServiceStateConnected:

						// Nothing to do

						break;

					}

				return;

				}

            }

        // Otherwise assume that it's disconnected

        AccessoryDisconnected ();

        }

    }

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

// CAutoAudioAsyService::AccessoryDisconnected ()

// Called when a disconnect notification is received

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

void CAutoAudioAsyService::AccessoryDisconnected ()

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::AccessoryDisconnected" );

    TRequestStatus status;

    switch ( iState )

        {

        case EServiceStateConnected:

            iAccessoryControl.DisconnectAccessory ( status, iGenericId->GenericID () );

            User::WaitForRequest ( status );

            FreeResources (); // sets state to EServiceStateIdle

            break;

        case EServiceStateConnecting:

            Cancel ();

            break;

        default:

            // nothing to do in this case

            break;

        }

    }

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

// CAutoAudioAsyService::ConnectAccessoryL ()

// Notifies the accessory server and switches to EServiceStateConnecting state.

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

void CAutoAudioAsyService::ConnectAccessoryL ()

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::ConnectAccessoryL" );

    RArray<TAccPolNameValueRecord> nameValueArray;

    CleanupClosePushL ( nameValueArray );

    // Set GenericID header

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] Set generic header" );

    iGenericIDHeader.iAccessoryDeviceType   = KDTCarKit;

    iGenericIDHeader.iPhysicalConnection    = KPCUSB;

    iGenericIDHeader.iApplicationProtocol   = 0x0;

    iGenericIDHeader.iCapabilitiesSubblocks = KSBAudioSubblock;

    iGenericIDHeader.iHWDeviceID            = 0x0;

    iGenericIDHeader.iHWModelID				= KNullDesC;

    iGenericId = CAccConGenericID::NewL ();

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] Set capabilities" );

    // Set "Audio Output Type" capability

	COM_TRACE_ ( "[AccFW:AutoAudioAsy] KAccAudioOutputType " );

    nameValueArray.AppendL ( TAccPolNameValueRecord ( KAccAudioOutputType,

        EAccAudioOutPutTypePublic, EAPVInt, EAPVPolicy ) );

    // Set "Audio stereo" capability

	COM_TRACE_ ( "[AccFW:AutoAudioAsy] KAccStereoAudio " );

	nameValueArray.AppendL ( TAccPolNameValueRecord ( KAccStereoAudio ) );

    // Set "Integrated audio output"

	COM_TRACE_ ( "[AccFW:AutoAudioAsy] KAccIntegratedAudioOutput " );

	nameValueArray.AppendL ( TAccPolNameValueRecord ( KAccIntegratedAudioOutput ) );

	// Set "RTP streaming"

	COM_TRACE_ ( "[AccFW:AutoAudioAsy] KAccRTPStreaming " );

	nameValueArray.AppendL ( TAccPolNameValueRecord ( KAccRTPStreaming ) );

    // Make generic id

    CAccConfigFileParser* accConfigFileParser = CAccConfigFileParser::NewL ( KNullDesC );

    CleanupStack::PushL ( accConfigFileParser );

    accConfigFileParser->ParseGenericIDL ( iGenericId, iGenericIDHeader, nameValueArray );

    // Connect accessory

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] Connecting accessory..." );

    iAccessoryControl.ConnectAccessory ( iStatus, iGenericId, EFalse );

    SET_STATE ( EServiceStateConnecting );

    SetActive ();

    CleanupStack::PopAndDestroy ( accConfigFileParser );

    CleanupStack::PopAndDestroy ( &nameValueArray );

    }    

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

// CActive methods

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

void CAutoAudioAsyService::DoCancel ()

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::DoCancel" );

    iAccessoryControl.CancelConnectAccessory ();

    FreeResources ();

    }

TInt CAutoAudioAsyService::RunError ( TInt /*aError*/ )

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::RunError" );

    return KErrNone;

    }

void CAutoAudioAsyService::RunL ()

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::RunL" );

	TInt retVal ( iStatus.Int () );

	COM_TRACE_1 ( "[AccFW:AutoAudioAsy] Connected with return value %d", retVal );

    if ( KErrNone == retVal )

		{

			switch ( iState )

			{

			case EServiceStateConnecting:				

				SET_STATE ( EServiceStateConnected );

				break;

			case EServiceStateIdle:

			case EServiceStateConnected:

			default:

				COM_TRACE_ ( "State machine broken" );

				break;

			}

		}

	else

		{

		COM_TRACE_ ( "[AccFW:AutoAudioAsy] Accessory Server failed to accept connection, freeing up resources" );		

		FreeResources ();

		}

	}	

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

// Frees resources and set state to EServiceStateIdle

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

void CAutoAudioAsyService::FreeResources ()

    {

    COM_TRACE_ ( "[AccFW:AutoAudioAsy] CAutoAudioAsyService::FreeResources" );

    if ( iState != EServiceStateIdle )

        {

        SET_STATE ( EServiceStateIdle );

        }

    delete iGenericId;

    iGenericId = NULL;

    }