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/*
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* Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: This implements CUsbActiveState class.
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*
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*/
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// INCLUDE FILES
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#include <usbman.h>
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#include "debug.h"
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#include "cusbactivestate.h"
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#include "cusbwatcher.h"
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// CONSTANTS
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const TUint KUsbAllStates = 0xFFFFFFFF;
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// ============================ MEMBER FUNCTIONS ==============================
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// ----------------------------------------------------------------------------
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// C++ default constructor can NOT contain any code, that might leave.
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// ----------------------------------------------------------------------------
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//
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CUsbActiveState::CUsbActiveState( RUsb& aUsbMan, CUsbWatcher& aOwner )
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: CActive( EPriorityStandard )
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, iUsbMan( aUsbMan )
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, iOwner( aOwner )
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, iPreviousState( EUsbDeviceStateUndefined )
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{
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LOG_FUNC
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CActiveScheduler::Add( this );
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}
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// ----------------------------------------------------------------------------
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// Symbian 2nd phase constructor can leave.
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// ----------------------------------------------------------------------------
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//
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void CUsbActiveState::ConstructL()
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{
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LOG_FUNC
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LEAVEIFERROR( iUsbMan.GetDeviceState( iCurrentState ) );
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LOG1( "Intial UsbDeviceState = %d" , iCurrentState );
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// start USB if cable is pluged-in at bootup
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if( EUsbDeviceStateUndefined != iCurrentState )
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{
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iOwner.StateChangeNotify( iPreviousState, iCurrentState );
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iPreviousState = iCurrentState;
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}
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iUsbMan.DeviceStateNotification( KUsbAllStates, iCurrentState, iStatus );
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SetActive();
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}
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// ----------------------------------------------------------------------------
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// Two-phased constructor.
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// ----------------------------------------------------------------------------
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//
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CUsbActiveState* CUsbActiveState::NewL( RUsb& aUsbMan, CUsbWatcher& aOwner )
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{
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LOG_FUNC
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CUsbActiveState* self = new ( ELeave ) CUsbActiveState( aUsbMan, aOwner );
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CleanupStack::PushL( self );
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self->ConstructL();
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CleanupStack::Pop(); // pop self
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return self;
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}
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// Destructor
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CUsbActiveState::~CUsbActiveState()
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{
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LOG_FUNC
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Cancel();
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}
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// ----------------------------------------------------------------------------
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// This function is called when device state is changed.
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// ----------------------------------------------------------------------------
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//
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void CUsbActiveState::RunL()
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{
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LOG_FUNC
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LEAVEIFERROR( iStatus.Int() ); // Close process if error happens here
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TUsbDeviceState newState = iCurrentState;
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iUsbMan.DeviceStateNotification( KUsbAllStates, iCurrentState,
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iStatus );
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SetActive();
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// Notify only if there is a change
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if ( newState != iPreviousState )
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{
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LOG2( "USB device state changed: %d ==> %d", iPreviousState,
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newState );
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iOwner.StateChangeNotify( iPreviousState, newState );
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iPreviousState = newState;
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}
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else
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{
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LOG2("USB device change ignored: %d -> %d", iPreviousState,
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newState );
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}
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}
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// ----------------------------------------------------------------------------
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// Standard active object cancellation function.
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// ----------------------------------------------------------------------------
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//
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void CUsbActiveState::DoCancel()
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{
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LOG_FUNC
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iUsbMan.DeviceStateNotificationCancel();
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}
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// ----------------------------------------------------------------------------
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// Get current device state.
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// ----------------------------------------------------------------------------
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//
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TUsbDeviceState CUsbActiveState::CurrentState()
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{
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LOG_FUNC
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return iCurrentState;
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}
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// ----------------------------------------------------------------------------
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// Get previous device state.
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// ----------------------------------------------------------------------------
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//
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TUsbDeviceState CUsbActiveState::PreviousState()
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{
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LOG_FUNC
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return iPreviousState;
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}
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// End of file
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