bluetoothappprofiles/avrcp/playerinformation/public/playerinformationtarget.h
author hgs
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201039_4
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// Copyright (c) 2007-2009 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:
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//
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/**
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 @file
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 @publishedAll
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 @released
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*/
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#ifndef REMCONPLAYERINFORMATIONTARGET_H
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#define REMCONPLAYERINFORMATIONTARGET_H
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#include <e32base.h>
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#include <s32mem.h>
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#include <e32hashtab.h>
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#include <remcon/remconinterfacebase.h>
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#include <remcon/remconinterfaceif.h>
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#include <remcon/avrcpspec.h>
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#include <playerinformationtargetobserver.h>
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class CRemConInterfaceSelector;
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class CPlayerApplicationSettings;
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class TEventsMask;
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// This is the maximum length of the player application setting attribute and value strings
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const TInt KMaxPlayerApplicationSettingsValue = 255 ;
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// This is the minimum length of the player application setting attribute and value strings
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const TInt KMinPlayerApplicationSettingsValue = 1 ;
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/**
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Client-instantiable class supporting player information responses.
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This is the container class for the three interface parts
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*/
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NONSHARABLE_CLASS(CPlayerInfoTarget) : 	public CRemConInterfaceBase,
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								       	public MRemConInterfaceIf2, 
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								       	private MPlayerCapabilitiesObserver,
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										private MPlayerApplicationSettingsObserver,
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										private MPlayerEventsObserver
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	{
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public:
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	/**
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	Factory function.
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	@param aInterfaceSelector The interface selector. The client must have 
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	created one of these first.
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	@param aPlayerCapabilitiesObserver Returns a pointer to a MPlayerCapabilitiesObserver for this interface, owned by the CPlayerInfoTarget.
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	@param aPlayerApplicationSettingsObserver Returns a pointer to a MPlayerApplicationSettingsObserver for this interface, owned by the CPlayerInfoTarget
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	@param aPlayerEventsObserver Returns a pointer to a MPlayerEventsObserver for this interface, owned by the CPlayerInfoTarget
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	@return A new CPlayerInfoTarget, owned by the interface selector.
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	*/
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	IMPORT_C static CPlayerInfoTarget* NewL(CRemConInterfaceSelector& aInterfaceSelector,
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								       	MPlayerCapabilitiesObserver*& aPlayerCapabilitiesObserver,
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										MPlayerApplicationSettingsObserver*& aPlayerApplicationSettingsObserver,
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										MPlayerEventsObserver*& aPlayerEventsObserver,
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										MPlayerApplicationSettingsNotify& aApplicationSettingNotifier );
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	/** Destructor */
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	IMPORT_C ~CPlayerInfoTarget();
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private:
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	/** 
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	Constructor.
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	@param aInterfaceSelector The interface selector.
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	*/
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	CPlayerInfoTarget(CRemConInterfaceSelector& aInterfaceSelector, MPlayerApplicationSettingsNotify& aApplicationSettingNotifier );
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	void ConstructL(MPlayerCapabilitiesObserver*& aPlayerCapabilitiesObserver,
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							MPlayerApplicationSettingsObserver*& aPlayerApplicationSettingsObserver,
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							MPlayerEventsObserver*& aPlayerEventsObserver );
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private: // from CRemConInterfaceBase
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	TAny* GetInterfaceIf(TUid aUid);
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private: // from MRemConInterfaceIf
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	void MrcibNewMessage(TUint aOperationId, const TDesC8& aData, TRemConMessageSubType aMsgSubType);
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private: 
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	// Bearer attributes (settings) processing
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	void ProcessListPlayerApplicationAttributes( TInt aOperationId );
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	void ProcessGetPlayerApplicationAttributeText( const TDesC8& aData, TInt aOperationId );
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	void ProcessListPlayerApplicationValues( const TDesC8& aData, TInt aOperationId );
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	void ProcessGetPlayerApplicationValueText( const TDesC8& aData, TInt aOperationId );
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	void ProcessGetCurrentPlayerApplicationValue( const TDesC8& aData, TInt aOperationId );
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	void ProcessSetPlayerApplicationValue( const TDesC8& aData, TInt aOperationId );
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	// Bearer attributes (settings) API implementation from MPlayerApplicationSettingsObserver
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	void DoDefineAttributeL(TUint aAttributeID, TDesC8& aAttributeText, RArray<TUint> &aValues, RArray<TPtrC8> &aValueTexts, TUint aInitialValue);
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	void DoSetAttributeL(TUint aAttributeID, TUint aValue);
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	// Notifier Events API implementation from MPlayerEventsObserver
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	void DoPlaybackStatusChanged(TPlaybackStatus aStatus);
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	void DoTrackChanged(TUint64 aTrackId, TUint32 aLengthInMilliseconds);
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	void DoTrackReachedEnd();
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	void DoTrackReachedStart();
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	void DoSetPlaybackPosition(TUint32 aMilliseconds);	
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	void DoSetBatteryStatus(TTargetBatteryStatus aBatteryStatus);
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	// Notifier Events bearer processing  
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	void ProcessGetPlayStatus();
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	void ProcessGetStatusAndBeginObserving(TUint aOperationId, TRegisterNotificationEvent aEventId, const TDesC8& aData);
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	void ProcessGetStatus(TUint aOperationId, TRegisterNotificationEvent aEventId);
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	void SendNotificationResponse(TRegisterNotificationEvent aEventId, TRemConMessageSubType aMsgSubType);
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	void ProcessGetPlayStatusUpdate(const TDesC8& aData);
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	// Capabilities API implementation from MPlayerCapabilitiesObserver
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	void DoClearEvents();
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	TInt DoAddEvent(TRegisterNotificationEvent aEvent);
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	TInt DoRemoveEvent(TRegisterNotificationEvent aEvent);
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	void DoClearCompanyIds();
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	TInt DoAddCompanyId(TInt aID);
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	TInt DoRemoveCompanyID(TInt aID);
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	// Capabilities bearer processing 
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	void ProcessGetCapabilities( const TDesC8& aData );
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	// Miscellaneous
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	TBool AttributeSettingExists(TUint anAttribute);
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	TBool IsValidAttributeValue(TUint anAttributeId, TUint aAttributeValue);
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	TBool AttributeValueCanBeSet(TUint anAttributeId, TUint aAttributeValue);
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	void SendError(TInt, TInt);
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	void SendError(TInt, TInt, TRemConMessageSubType aSubType);
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	CPlayerApplicationSettings* GetSetting(TUint anAttribute);
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	MPlayerEventsObserver::TTargetBatteryStatus DetectBatteryStatus();
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private: // owned
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	RBuf8								iOutBuf;
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	MPlayerApplicationSettingsNotify& 	iApplicationSettingNotifier;
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	// data for MPlayerEventsObserver
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	TPlaybackStatus 					iPlayBackStatus;
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	TUint64 							iTrackId;
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	TUint32 							iLengthInMilliseconds;
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	TPlayPosition						iTrackPosition;
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	// The time interval (received as part if the RegisterNotification) 
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	// in which the change in playback position will be notified
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	TUint32   							iPlayBackIntervalInMilliseconds;
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	TTargetBatteryStatus				iBatteryStatus;
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	TUint32 							iPlaybackPositionInMilliseconds;
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	TUint32								iLastNotifiedPlaybackPositionInMilliseconds;
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	// data for MPlayerCapabilitiesObserver
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	TEventsMask*						iSupportedNotificationEventList;
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	RArray<TInt> 						iCompanyIdList;
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	// list of events for which notifications have been request 
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	RArray<TRegisterNotificationEvent> 			iPendingNotificationEventList;
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	// Whether we've been asked for an update when the play status changes
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	TBool								iPlaybackStatusUpdatePending;
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	// Attribute (settings) data MPlayerApplicationSettingsObserver
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	RHashMap<TInt, CPlayerApplicationSettings*>		iPlayerApplicationSettings;
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	};
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#endif // REMCONPLAYERINFORMATIONTARGET_H