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    41 

    42 #ifndef QMEDIAPLAYLISTPROVIDER_H

    43 #define QMEDIAPLAYLISTPROVIDER_H

    44 

    45 #include <QObject>

    46 

    47 #include <qmediacontent.h>

    48 #include <qmediaplaylist.h>

    49 

    50 QT_BEGIN_NAMESPACE

    51 class QString;

    52 QT_END_NAMESPACE

    53 

    54 QTM_BEGIN_NAMESPACE

    55 

    56 class QMediaPlaylistProviderPrivate;

    57 class Q_MEDIA_EXPORT QMediaPlaylistProvider : public QObject

    58 {

    59 Q_OBJECT

    60 public:

    61     QMediaPlaylistProvider(QObject *parent=0);

    62     virtual ~QMediaPlaylistProvider();

    63 

    64     virtual bool load(const QUrl &location, const char *format = 0);

    65     virtual bool load(QIODevice * device, const char *format = 0);

    66     virtual bool save(const QUrl &location, const char *format = 0);

    67     virtual bool save(QIODevice * device, const char *format);

    68 

    69     virtual int mediaCount() const = 0;

    70     virtual QMediaContent media(int index) const = 0;

    71 

    72     virtual bool isReadOnly() const;

    73 

    74     virtual bool addMedia(const QMediaContent &content);

    75     virtual bool addMedia(const QList<QMediaContent> &contentList);

    76     virtual bool insertMedia(int index, const QMediaContent &content);

    77     virtual bool insertMedia(int index, const QList<QMediaContent> &content);

    78     virtual bool removeMedia(int pos);

    79     virtual bool removeMedia(int start, int end);

    80     virtual bool clear();

    81 

    82 public Q_SLOTS:

    83     virtual void shuffle();

    84 

    85 Q_SIGNALS:

    86     void mediaAboutToBeInserted(int start, int end);

    87     void mediaInserted(int start, int end);

    88 

    89     void mediaAboutToBeRemoved(int start, int end);

    90     void mediaRemoved(int start, int end);

    91 

    92     void mediaChanged(int start, int end);

    93 

    94     void loaded();

    95     void loadFailed(QMediaPlaylist::Error, const QString& errorMessage);

    96 

    97 protected:

    98     QMediaPlaylistProviderPrivate *d_ptr;

    99     QMediaPlaylistProvider(QMediaPlaylistProviderPrivate &dd, QObject *parent);

   100 

   101 private:

   102     Q_DECLARE_PRIVATE(QMediaPlaylistProvider)

   103 };

   104 

   105 QTM_END_NAMESPACE

   106 

   107 #endif // QMEDIAPLAYLISTPROVIDER_H