/*

* Copyright (c) 2008 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 observes the accessory framework.

 *

*/

//

//  INCLUDE FILES

//

#include <e32svr.h>

#include <AccPolSubblockNameArray.h>

#include "mpxvideoaccessoryobserver.h"

#include "mpxvideoplaybackcontroller.h"

#include "mpxvideo_debug.h"

//

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

//

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

//   CMPXVideoAccessoryObserver::NewL

//   Two-phased constructor.

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

//

CMPXVideoAccessoryObserver*

CMPXVideoAccessoryObserver::NewL( CMPXVideoPlaybackController* aController )

{

    MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::NewL()"));

    CMPXVideoAccessoryObserver* self = new (ELeave) CMPXVideoAccessoryObserver( aController );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

}

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

//   CMPXVideoAccessoryObserver::ConstructL

//   Symbian 2nd phase constructor can leave

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

//

void CMPXVideoAccessoryObserver::ConstructL()

{

    MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::ConstructL()"));

#ifdef __ACCESSORY_FW

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

    User::LeaveIfError( iConnection.CreateSubSession( iServer ) );

    //

    //  Get initial accessory status synchronously

    //

    iConnection.GetAccessoryConnectionStatus( iGenericIdArray );

#endif

    //

    //  This will set check if a TV-Out accessory has been connected

    //  and initialize the member variable

    //

    UpdateTvOutStatusL();

    StartMonitoringL();

}

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

//   CMPXVideoAccessoryObserver::CMPXVideoAccessoryObserver

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

//

CMPXVideoAccessoryObserver::CMPXVideoAccessoryObserver( CMPXVideoPlaybackController* aController )

    : CActive( CActive::EPriorityStandard )

    , iController( aController )

    , iTvOutConnected( EFalse )

{

    CActiveScheduler::Add( this );

}

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

//   CMPXVideoAccessoryObserver::~CMPXVideoAccessoryObserver

// Destructor, close and release the handles.

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

//

CMPXVideoAccessoryObserver::~CMPXVideoAccessoryObserver()

{

    MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::~CMPXVideoAccessoryObserver()"));

    Cancel();

#ifdef __ACCESSORY_FW

    iConnection.CloseSubSession();

    iServer.Disconnect();

#endif

}

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

//   CMPXVideoAccessoryObserver::StartMonitoringL

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

//

void CMPXVideoAccessoryObserver::StartMonitoringL()

{

    MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::StartMonitoringL()"));

    if ( ! IsActive() )

    {

#ifdef __ACCESSORY_FW

        iConnection.NotifyAccessoryConnectionStatusChanged( iStatus, iGenericIdArray );

#endif

        SetActive();

    }

}

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

//   CMPXVideoAccessoryObserver::UpdateTvOutStatusL

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

//

TBool CMPXVideoAccessoryObserver::UpdateTvOutStatusL()

{

    MPX_DEBUG(_L("CMPXVideoAccessoryObserver::UpdateTvOutStatusL()"));

    TBool statusChanged = EFalse;

    //

    //  Initialize TV-Out value to EFalse before checking if

    //  accessories support TV-Out

    //

    TBool tvOutConnected = EFalse;

#ifdef __ACCESSORY_FW

    CAccPolSubblockNameArray* nameArray = CAccPolSubblockNameArray::NewL();

    CleanupStack::PushL( nameArray );

    //

    //  Get the number of currently connected accessories

    //  Loop through each connected accessory looking for

    //  the desired capabilities

    //

    const TInt count = iGenericIdArray.Count();

    for ( TInt index = 0 ; index < count ; index++ )

    {

        TAccPolGenericID genId = iGenericIdArray.GetGenericIDL( index );

        //

        //  Get all supported capabilities for this connected accessory.

        //

        iConnection.GetSubblockNameArrayL( genId, *nameArray );

        //

        //  Check if this connected accessory supports TV-Out

        //

        if ( nameArray->HasName( KAccVideoOut ) )

        {

            MPX_DEBUG(_L("    TV-Out Capabilities Exist"));

            tvOutConnected = ETrue;                         

        }

    }

    CleanupStack::PopAndDestroy( nameArray );

#endif

    //

    //  Check if the TV-Out status has changed

    //

    if ( iTvOutConnected != tvOutConnected )

    {

        iTvOutConnected = tvOutConnected;

        statusChanged   = ETrue;

    }

    MPX_DEBUG(_L("CMPXVideoAccessoryObserver::UpdateTvOutStatusL  iTvOutConnected = %d"), iTvOutConnected);

    MPX_DEBUG(_L("CMPXVideoAccessoryObserver::UpdateTvOutStatusL() ret = %d"), statusChanged);

    return statusChanged;

}

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

//   CMPXVideoAccessoryObserver::RunL

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

//

void CMPXVideoAccessoryObserver::RunL()

{

    MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::RunL()"),

                   _L("iStatus = %d"), iStatus.Int());

#ifdef __ACCESSORY_FW

    if ( KErrNone == iStatus.Int() )

    {

        //

        //  Check for TV-Out status change

        //  If a changed, issue notice to the observer

        //

        if ( UpdateTvOutStatusL() )

        {

            iController->HandleTvOutEventL( iTvOutConnected );

        }

    }

#endif

    //

    //  Renew request for accessory events

    //

    StartMonitoringL();

}

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

//   CMPXVideoAccessoryObserver::DoCancel

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

//

void CMPXVideoAccessoryObserver::DoCancel()

{

    MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::DoCancel()"));

#ifdef __ACCESSORY_FW

    iConnection.CancelNotifyAccessoryConnectionStatusChanged();

#endif

}

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

//   CMPXVideoAccessoryObserver::RunError

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

//

TInt CMPXVideoAccessoryObserver::RunError( TInt aError )

{

    MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::RunError()"),

                   _L("aError = %d"), aError);

#ifdef __ACCESSORY_FW

    //

    //  Error occurred, issue new request for accessory status

    //

    iConnection.NotifyAccessoryConnectionStatusChanged( iStatus, iGenericIdArray );

#endif

    return KErrNone;

}

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

//   CMPXVideoAccessoryObserver::IsTvOutConnected

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

//

TBool CMPXVideoAccessoryObserver::IsTvOutConnected()

{

    MPX_DEBUG(_L("CMPXVideoAccessoryObserver::IsTvOutConnected(%d)"), iTvOutConnected);

    return iTvOutConnected;

}

//  End of File