inc/videoservices.h
author hgs
Fri, 16 Apr 2010 18:13:14 +0300
changeset 36 8aed59de29f9
child 20 b9e04db066d4
permissions -rw-r--r--
201015
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/*
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* Copyright (c) 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:   VideoServices class definition
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*
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*/
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#ifndef __VIDEOSERVICES_H__
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#define __VIDEOSERVICES_H__
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#include <QStringList>
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#include "videoplayerappexport.h"
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//FORWARD CLASS DECLARATION
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class VideoServiceUriFetch;
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class VideoServicePlay;
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class VideoServiceView;
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class VideoServiceBrowse;
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class QVideoPlayerEngine;
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class VIDEOPLAYERAPP_DLL_EXPORT VideoServices : public QObject
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{
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    Q_OBJECT
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public:
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    /**
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     * Returns singleton instance for this class.
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     *
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     * WARNING! Not safe to call this from destructor of another function scope static object!
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     *
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     * @return The singleton instance.
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     */
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    static VideoServices *instance(QVideoPlayerEngine* engine = 0);
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    /**
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     * Decreases the reference count, when count reaches zero cleanup is done.
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     *
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     */
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    void decreaseReferenceCount();
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    /**
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     * Returns the context title set by service requestee
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     *
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     * @return QString the title
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     *
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     */
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    QString contextTitle() const;
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	/*
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	 * Enum reflecting the services provided 
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	 */
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    enum TVideoService
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    {
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        ENoService,
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        EUriFetcher,
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        EPlayback,
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		EView,
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        EBrowse
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    };
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    /**
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     * Returns service active status
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     *
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     * @return bool true if active, false if not active
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     *
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     */
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    VideoServices::TVideoService currentService();
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    /**
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     * Returns browsing category.
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     * 
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     * @return see vcxmyvideosdef.h for default categories.
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     */
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    int getBrowseCategory() const;
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public slots:
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    void itemSelected(const QString& item);
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    void browsingEnded();
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signals:
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	/*
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	 * Emitted when service user has set the title
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	 */    
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	void titleReady(const QString& title);
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	/*
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	 * Emitted to acticate requested plugin
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	 */
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	void activated(int command);
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private:
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    /**
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     * Constructor
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     */
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    VideoServices();
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    /**
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     * Constructor
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     */
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    VideoServices(QVideoPlayerEngine* engine);
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    /**
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     * Destructor.
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     */
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    virtual ~VideoServices();
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    void setEngine(QVideoPlayerEngine* engine);
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    /**
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     * Sets the active service
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     *
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     * @param service
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     *
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     */
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    void setCurrentService(VideoServices::TVideoService service);
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    /**
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     * Returns the current engine
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     *
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     * @return engine
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     *
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     */
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    QVideoPlayerEngine* engine();
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    Q_DISABLE_COPY(VideoServices)
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private:
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    /**
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     * Reference count.
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     */
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    int mReferenceCount;
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    /**
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     * Singleton instance.
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     */
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    static VideoServices* mInstance;
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    /**
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     * VideoServiceUriFetch service instance.
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     */
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    VideoServiceUriFetch* mServiceUriFetch;
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    /**
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     * VideoServicePlay service instance.
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     */
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    VideoServicePlay* mServicePlay;
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    /**
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     * VideoServiceView service instance.
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     */    
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    VideoServiceView* mServiceView; 
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    /**
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     * VideoServiceBrowse service instance.
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     */
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    VideoServiceBrowse *mServiceBrowse;
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    /**
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     * Pointer of QVideoPlayerEngine.
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     */
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    QVideoPlayerEngine* mEngine;
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	/*
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	 * Current service
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	 */
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    VideoServices::TVideoService mCurrentService;
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    friend class VideoServiceUriFetch;
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    friend class VideoServicePlay;
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	friend class VideoServiceView;
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    friend class VideoServiceBrowse;
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    };
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#endif //__VIDEOSERVICES_H__