/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtMediaservices module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QMEDIAPLAYLISTIOPLUGIN_H
#define QMEDIAPLAYLISTIOPLUGIN_H

#include <QtCore/qobject.h>
#include <QtCore/qplugin.h>
#include <QtCore/qfactoryinterface.h>

#include <QtMediaservices/qmediacontent.h>


QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Multimedia)


class QString;
class QUrl;
class QByteArray;
class QIODevice;
class QStringList;

class Q_MULTIMEDIA_EXPORT QMediaPlaylistReader
{
public:
    virtual ~QMediaPlaylistReader();

    virtual bool atEnd() const = 0;
    virtual QMediaContent readItem() = 0;
    virtual void close() = 0;
};

class Q_MULTIMEDIA_EXPORT QMediaPlaylistWriter
{
public:
    virtual ~QMediaPlaylistWriter();

    virtual bool writeItem(const QMediaContent &content) = 0;
    virtual void close() = 0;
};

struct Q_MULTIMEDIA_EXPORT QMediaPlaylistIOInterface : public QFactoryInterface
{
    virtual bool canRead(QIODevice *device, const QByteArray &format = QByteArray() ) const = 0;
    virtual bool canRead(const QUrl& location, const QByteArray &format = QByteArray()) const = 0;

    virtual bool canWrite(QIODevice *device, const QByteArray &format) const = 0;

    virtual QMediaPlaylistReader *createReader(QIODevice *device, const QByteArray &format = QByteArray()) = 0;
    virtual QMediaPlaylistReader *createReader(const QUrl& location, const QByteArray &format = QByteArray()) = 0;

    virtual QMediaPlaylistWriter *createWriter(QIODevice *device, const QByteArray &format) = 0;
};

#define QMediaPlaylistIOInterface_iid "com.nokia.Qt.QMediaPlaylistIOInterface"
Q_DECLARE_INTERFACE(QMediaPlaylistIOInterface, QMediaPlaylistIOInterface_iid);

class Q_MULTIMEDIA_EXPORT QMediaPlaylistIOPlugin : public QObject, public QMediaPlaylistIOInterface
{
    Q_OBJECT
    Q_INTERFACES(QMediaPlaylistIOInterface:QFactoryInterface)

public:
    explicit QMediaPlaylistIOPlugin(QObject *parent = 0);
    virtual ~QMediaPlaylistIOPlugin();

    virtual bool canRead(QIODevice *device, const QByteArray &format = QByteArray() ) const = 0;
    virtual bool canRead(const QUrl& location, const QByteArray &format = QByteArray()) const = 0;

    virtual bool canWrite(QIODevice *device, const QByteArray &format) const = 0;

    virtual QStringList keys() const = 0;

    virtual QMediaPlaylistReader *createReader(QIODevice *device, const QByteArray &format = QByteArray()) = 0;
    virtual QMediaPlaylistReader *createReader(const QUrl& location, const QByteArray &format = QByteArray()) = 0;

    virtual QMediaPlaylistWriter *createWriter(QIODevice *device, const QByteArray &format) = 0;
};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QMEDIAPLAYLISTIOPLUGIN_H