author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 11 Jun 2010 14:27:06 +0300 | |
changeset 28 | 85e0c0339cc3 |
child 54 | 4dc88a4ac6f4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 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: DUN USB plugin's listener |
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* |
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*/ |
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#ifndef C_CDUNUSBLISTEN_H |
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#define C_CDUNUSBLISTEN_H |
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#include <e32std.h> |
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#include <c32comm.h> |
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#include <usbman.h> |
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#include "DunPlugin.h" |
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enum TUsbListenState |
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{ |
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EUsbListenStateIdle, |
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EUsbListenStateListening |
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}; |
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/** |
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* DUN USB plugin's listener class |
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* This class starts listening for USB device state to change to configured. |
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* When change to configured is detected, parent (CDunUsbPlugin) is notified |
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* to create a channel. Also when device state is no longer configured, |
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* parent (CDunUsbPlugin) is notified to remove a channel. |
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* |
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* @lib dunusb.lib |
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* @since S60 v3.2 |
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*/ |
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NONSHARABLE_CLASS( CDunUsbListen ) : public CActive |
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{ |
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public: |
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|
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/** |
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* Two-phased constructor. |
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* @param aServer Server |
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* @param aParent Creator of this instance |
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* @param aUsbServer USB server |
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* @return Instance of self |
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*/ |
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static CDunUsbListen* NewL( MDunServerCallback* aServer, |
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MDunListenCallback* aParent, |
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RUsb& aUsbServer ); |
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/** |
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* Destructor. |
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*/ |
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virtual ~CDunUsbListen(); |
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/** |
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* Resets data to initial values |
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* |
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* @since S60 3.2 |
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* @return None |
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*/ |
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void ResetData(); |
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/** |
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* IssueRequest to USB server for device state change notifications |
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* |
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* @return KErrAlreadyExists if device state configured, |
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* KErrNone otherwise |
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*/ |
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TInt IssueRequestL(); |
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/** |
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* Stops listening |
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* |
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* @since S60 3.2 |
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* @return Symbian error code on error, KErrNone otherwise |
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*/ |
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TInt Stop(); |
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private: |
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CDunUsbListen( MDunServerCallback* aServer, |
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MDunListenCallback* aParent, |
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RUsb& aUsbServer ); |
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void ConstructL(); |
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/** |
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* Initializes this class |
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* |
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* @since S60 3.2 |
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* @return None |
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*/ |
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void Initialize(); |
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/** |
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* Activates listening request |
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* |
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* @since S60 3.2 |
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* @return KErrNotReady if already active, KErrNone otherwise |
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*/ |
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TInt Activate(); |
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// from base class CActive |
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/** |
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* From CActive. |
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* Called when read or write operation is ready. |
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* |
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* @since S60 3.2 |
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* @return None |
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*/ |
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void RunL(); |
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/** |
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* From CActive. |
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* Cancel current activity. |
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* |
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* @return None |
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*/ |
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void DoCancel(); |
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private: // data |
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/** |
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* Callback to call when notification via MDunServerCallback to be made |
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* Not own. |
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*/ |
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MDunServerCallback* iServer; |
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|
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/** |
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* Callback to call when notification via MDunListenCallback to be made |
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* Not own. |
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*/ |
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MDunListenCallback* iParent; |
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|
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/** |
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* Current state of listening: active or inactive |
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*/ |
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TUsbListenState iListenState; |
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|
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/** |
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* USB server (USB manager) needed for device state notifications |
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* Device states needed to create transporter channel |
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*/ |
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RUsb& iUsbServer; |
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|
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/** |
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* Device state of USB set when RUsb::DeviceStateNotification completes |
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*/ |
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TUsbDeviceState iDeviceState; |
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|
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/** |
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* Previous state of USB set when RUsb::DeviceStateNotification completes |
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*/ |
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TUsbDeviceState iDeviceStatePrev; |
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}; |
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#endif // C_CDUNUSBLISTEN_H |