author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 08:45:44 +0200 | |
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child 17 | a60acebbbd9d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007-2008 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: The music control for the slideshow |
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* |
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*/ |
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#ifndef __CSHWMUSICCONTROL_H__ |
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#define __CSHWMUSICCONTROL_H__ |
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// INCLUDES |
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#include <e32std.h> |
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#include <e32base.h> |
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#include <mpxplaybackobserver.h> // MMPXPlaybackCallback |
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#include <mpxplaybackframeworkdefs.h> // TMPXPlaybackProperty |
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#include "shwmusicobserver.h" // MShwMusicObserver |
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#include "shweventobserver.h" |
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#include "shweventpublisherbase.h" |
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// FORWARD DECLARATIONS |
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class MMPXPlaybackUtility; |
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// CLASS DECLARATION |
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/** |
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* CShwMusicControl |
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* Slideshow music control wraps the MPX music control for slideshow |
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* @lib shwslideshowengine.lib |
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* @author Loughlin Spollen |
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*/ |
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NONSHARABLE_CLASS( CShwMusicControl ) |
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: public CShwEventPublisherBase, |
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public MShwEventObserver, |
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public MMPXPlaybackCallback, |
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public MMPXPlaybackObserver |
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{ |
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public: // Constructors and destructor |
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/** |
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* Constructor. |
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* @param aFilePath, the list that this view control manages |
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* @param aMusicObsvr, the music control observer which receives |
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* notification of music on/off and |
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* volume level. |
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*/ |
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static CShwMusicControl* NewL(MShwMusicObserver& aMusicObsvr, |
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const TDesC& aFilePath); |
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/** |
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* Destructor. |
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*/ |
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~CShwMusicControl(); |
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private: |
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/** |
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* Constructor |
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* @param aFilePath, the list that this view control manages |
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* @param aMusicObsrvr* the music control observer. May be Null. |
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*/ |
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CShwMusicControl(MShwMusicObserver& aMusicObsvr, |
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const TDesC& aFilePath); |
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/** |
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* 2nd stage constructor |
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*/ |
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void ConstructL(); |
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/** |
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* Initialise the player utility member |
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*/ |
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void InitPlayerL(); |
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/** |
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* Retrieve the current volume settings from the player |
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* utility member |
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* Volume settins are retrieved asyncronously |
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*/ |
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void VolumeL(); |
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public: // From MShwEventObserver |
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/** @ref MShwEventObserver::NotifyL */ |
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void NotifyL(MShwEvent* aEvent); |
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public: // From MMPXPlaybackCallback |
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/** |
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* Handle playback property |
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* @ref MMPXPlaybackCallback::HandlePropertyL |
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*/ |
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void HandlePropertyL( |
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TMPXPlaybackProperty aProperty, |
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TInt aValue, TInt aError ); |
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|
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/** |
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* Method is called continously until aComplete=ETrue, |
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* signifying that it is done and there will be no more |
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* callbacks |
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* Only new items are passed each time |
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* @ref MMPXPlaybackCallback::HandleSubPlayerNamesL |
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*/ |
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void HandleSubPlayerNamesL( |
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TUid aPlayer, const MDesCArray* aSubPlayers, |
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TBool aComplete, TInt aError ); |
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|
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/** |
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* Handle extended media properties |
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* @ref MMPXPlaybackCallback::HandleMediaL |
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*/ |
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void HandleMediaL( |
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const CMPXMedia& aProperties, TInt aError ); |
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|
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private: // From MMPXPlaybackObserver |
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|
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/** |
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* Handle playback message - required for debugging state of MPX |
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* Player component |
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*/ |
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void HandlePlaybackMessageL( |
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const TMPXPlaybackMessage& aMessage ); |
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|
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/** |
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* Handle playback message |
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* NOTE: only one of HandlePlaybackMessage callback can be implemented |
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* |
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* @param aMsg playback message, ownership not transferred. |
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* Please check aMsg is not NULL before using it. If aErr is not |
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* KErrNone, plugin might still call back with more info in the aMsg. |
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* @param aErr system error code. |
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*/ |
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void HandlePlaybackMessage(const CMPXMessage& aMsg); |
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|
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private: // Implementation |
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|
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// implmentation of the NotifyL |
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void HandleEventL( MShwEvent* aEvent ); |
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|
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/// Own: music is beeing switched on |
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TBool iSwitchingMusicOn; |
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|
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/// Ref: the path to the music file |
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const TDesC& iFilePath; |
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|
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/// Own: the MPX player utility |
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MMPXPlaybackUtility* iPlaybackUtility; |
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|
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/// Ref: Music Observer |
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MShwMusicObserver& iMusicObsvr; |
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|
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/// Own: the max volume setting |
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TInt iMaxVolume; |
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|
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/// Own: the current volume setting |
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TInt iCurrentVolume; |
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|
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// It is set to ETrue if music can be played |
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TBool iCanPlay; |
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|
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// It is set to ETrue if music player is not yet initialized |
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TBool iPlayCached; |
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|
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/// Own: state flag |
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enum TState |
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{ |
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EMusicOn, |
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EMusicOff |
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} iState; |
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|
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}; |
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|
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#endif // __CSHWMUSICCONTROL_H__ |