src/ifmedia/qifmediaplayerbackendinterface.h


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// Copyright (C) 2021 The Qt Company Ltd.
// Copyright (C) 2019 Luxoft Sweden AB
// Copyright (C) 2018 Pelagicore AG
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#ifndef QIFMEDIAPLAYERBACKENDINTERFACE_H
#define QIFMEDIAPLAYERBACKENDINTERFACE_H

#include <QtInterfaceFramework/QIfFeatureInterface>
#include <QtInterfaceFramework/qifqmlconversion_helper.h>
#include <QtIfMedia/qtifmediaglobal.h>
#include <QtIfMedia/QIfMediaPlayer>
#include <QtCore/QUuid>

QT_BEGIN_NAMESPACE

class QIfPlayableItem;

class Q_QTIFMEDIA_EXPORT QIfMediaPlayerBackendInterface : public QIfFeatureInterface
{
    Q_OBJECT

public:
    explicit QIfMediaPlayerBackendInterface(QObject *parent = nullptr);

    virtual void play() = 0;
    virtual void pause() = 0;
    virtual void stop() = 0;
    virtual void seek(qint64 offset) = 0;
    virtual void next() = 0;
    virtual void previous() = 0;
    virtual void setPlayMode(QIfMediaPlayer::PlayMode playMode) = 0;
    virtual void setPosition(qint64 position) = 0;
    virtual void setCurrentIndex(int currentIndex) = 0;
    virtual void setVolume(int volume) = 0;
    virtual void setMuted(bool muted) = 0;

    virtual void fetchData(const QUuid &identifier, int start, int count) = 0;

    virtual void insert(int index, const QVariant &item) = 0;
    virtual void remove(int index) = 0;
    virtual void move(int currentIndex, int newIndex) = 0;

Q_SIGNALS:
    void playModeChanged(QIfMediaPlayer::PlayMode playMode = QIfMediaPlayer::Normal);
    void playStateChanged(QIfMediaPlayer::PlayState playState  = QIfMediaPlayer::Stopped);
    void currentTrackChanged(const QVariant &currentTrack = QVariant()); //TODO Do we need this or is the currentIndex + the playlistdata enough ?
    void positionChanged(qint64 position = -1);
    //TODO do we need durationChanged, we can get that from the currentTrack metadata.
    void durationChanged(qint64 duration = -1);
    void currentIndexChanged(int currentIndex = -1);
    void volumeChanged(int volume = -1);
    void mutedChanged(bool muted = false);
    void canReportCountChanged(bool canReportCount = false);
    void countChanged(int newLength = -1);
    void dataFetched(const QUuid &identifier, const QList<QVariant> &data, int start, bool moreAvailable);
    void dataChanged(const QList<QVariant> &data, int start, int count);
};

#define QIfMediaPlayer_iid "org.qt-project.interfaceframework.MediaPlayer/1.0"

QT_END_NAMESPACE

#endif // QIFMEDIAPLAYERBACKENDINTERFACE_H