tsrc/musenginestub/inc/musengsession.h
author Pat Downey <patd@symbian.org>
Wed, 01 Sep 2010 12:31:01 +0100
branchRCL_3
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/*
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* Copyright (c) 2005 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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#ifndef MUSHENGSESSION_H
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#define MUSHENGSESSION_H
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// USER INCLUDES
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//SYSTEM INCLUDES
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#include <e32base.h>
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// FORWARD DECLARATIONS
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class MMusEngSessionObserver;
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// CLASS DECLARATION
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/**
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* Base class for Multimedia Sharing Engine sessions, inherited by
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* CMusEngMceSession.
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*
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* CMusEngSession encapsulates all common activities example using
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* resources.
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*
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* @lib musengine.lib
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* @since S60 v3.2
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*/
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class CMusEngSession : public CBase
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    {
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    public:
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        /**
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        * Desctructor, finalize session
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        *
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        * @since S60 v3.2
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        */
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        ~CMusEngSession();
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    public:  // API FUNCTIONS
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        /**
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        * Returns currently assigned drawing area
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        *
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        * @since S60 v3.2
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        * @return TRect This session drawing area recttangle
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        */
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        IMPORT_C TRect Rect() const;
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        /**
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        * Sets new drawing area
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        *
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        * @since S60 v3.2
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        * @param TRect This session new drawing area rectangle
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        */
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        IMPORT_C void SetRectL( const TRect& aRect );
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        /**
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        * Activates/deactivates loadspeaker
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        *
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        * @since S60 v3.2
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        * @param TBool Enable or disable loudspeaker
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        * @param TBool Show activation dialog
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        */
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        IMPORT_C void EnableLoudspeakerL( TBool aEnable, TBool aShowDialog );
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        /**
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        * Checks is loudspeaker enabled or disabled.
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        *
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        * @since S60 v3.2
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        * @return TBool true if enabled
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        */
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        IMPORT_C TBool IsLoudSpeakerEnabled() const;
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        /**
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        * Returns current volume level
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        *
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        * @since S60 v3.2
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        */
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        IMPORT_C TInt VolumeL() const;
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    public:  // VIRTUAL API FUNCTIONS
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        /**
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        * Increases volume level by one.
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        *
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        * @since S60 v3.2
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        */
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        IMPORT_C virtual void VolumeUpL();
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        /**
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        * Decreases volume level by one
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        *
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        * @since S60 v3.2
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        */
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        IMPORT_C virtual void VolumeDownL();
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        /**
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        * Enables or disables display. Call to this function is considered
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        * as a permission or denial to draw to the display.
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        *
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        * @since S60 v3.2
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        */
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        IMPORT_C virtual void EnableDisplayL( TBool aEnable ) = 0;
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        /**
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        * Mutes current audio stream meaning that any audio is not played or
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        * sent to network.
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        *
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        * @since S60 v3.2
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        */
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        IMPORT_C virtual void MuteL() = 0;
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        /**
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        * Unmute current audio stream meaning that all the audio is played
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        * and if needed also sent to network.
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        *
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        * @since S60 v3.2
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        */
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        IMPORT_C virtual void UnmuteL() = 0;
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    protected: // INTERNAL
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        virtual void RectChangedL() = 0;
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    protected:
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        /**
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        * Constructor, private cannot be instantiate
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        *
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        *
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        * @since S60 v3.2
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        * @param TRect reserved drawing area for this session
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        */
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        CMusEngSession( const TRect& aRect );
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    protected:
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        /**
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        * second-phase constructor, called by those session specific
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        * constructors
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        *
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        * @since S60 v3.2
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        */
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        void ConstructL();
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    protected: // MEMBERS
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        /**
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        * Callback pointer to interface, not own
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        *
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        * @since S60 v3.2
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        */
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        MMusEngSessionObserver* iSessionObserver;
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    public: // MEMBERS
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        /**
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        * Drawing area rect
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        *
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        * @since S60 v3.2
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        */
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        TRect iRect;
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        /**
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        * Telephone utilities
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        *
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        * @since S60 v3.2
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        */
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        //CMusEngTelephoneUtils* iTelephoneUtils;
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        TInt iErrorCode;
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    };
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#endif //MUSHENGSESSION_H