src/multimedia/qmediarecorder.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 01:37:06 +0300
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permissions -rw-r--r--
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QMEDIARECORDER_H
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#define QMEDIARECORDER_H
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#include <qmediaobject.h>
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#include <qmediaserviceprovider.h>
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#include <qmediaencodersettings.h>
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#include <qmediabindableinterface.h>
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#include <QtCore/qpair.h>
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QT_BEGIN_NAMESPACE
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class QUrl;
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class QSize;
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class QAudioFormat;
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QT_END_NAMESPACE
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QT_BEGIN_NAMESPACE
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class QMediaRecorderService;
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class QAudioEncoderSettings;
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class QVideoEncoderSettings;
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class QMediaRecorderPrivate;
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class Q_MULTIMEDIA_EXPORT QMediaRecorder : public QObject, public QMediaBindableInterface
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{
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    Q_OBJECT
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    Q_INTERFACES(QMediaBindableInterface)
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    Q_ENUMS(State)
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    Q_ENUMS(Error)
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    Q_PROPERTY(qint64 duration READ duration NOTIFY durationChanged)
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    Q_PROPERTY(QUrl outputLocation READ outputLocation WRITE setOutputLocation)
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    Q_PROPERTY(bool muted READ isMuted WRITE setMuted NOTIFY mutedChanged)
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    Q_PROPERTY(bool metaDataAvailable READ isMetaDataAvailable NOTIFY metaDataAvailableChanged)
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    Q_PROPERTY(bool metaDataWritable READ isMetaDataWritable NOTIFY metaDataWritableChanged)
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public:
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    enum State
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    {
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        StoppedState,
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        RecordingState,
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        PausedState
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    };
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    enum Error
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    {
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        NoError,
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        ResourceError,
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        FormatError
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    };
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    QMediaRecorder(QMediaObject *mediaObject, QObject *parent = 0);
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    ~QMediaRecorder();
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    QMediaObject *mediaObject() const;
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    bool isAvailable() const;
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    QtMultimediaKit::AvailabilityError availabilityError() const;
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    QUrl outputLocation() const;
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    bool setOutputLocation(const QUrl &location);
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    State state() const;
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    Error error() const;
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    QString errorString() const;
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    qint64 duration() const;
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    bool isMuted() const;
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    QStringList supportedContainers() const;
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    QString containerDescription(const QString &containerMimeType) const;
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    QStringList supportedAudioCodecs() const;
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    QString audioCodecDescription(const QString &codecName) const;
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    QList<int> supportedAudioSampleRates(const QAudioEncoderSettings &settings = QAudioEncoderSettings(),
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                                         bool *continuous = 0) const;
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    QStringList supportedVideoCodecs() const;
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    QString videoCodecDescription(const QString &codecName) const;
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    QList<QSize> supportedResolutions(const QVideoEncoderSettings &settings = QVideoEncoderSettings(),
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                                      bool *continuous = 0) const;
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    QList<qreal> supportedFrameRates(const QVideoEncoderSettings &settings = QVideoEncoderSettings(),
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                                     bool *continuous = 0) const;
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    QAudioEncoderSettings audioSettings() const;
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    QVideoEncoderSettings videoSettings() const;
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    QString containerMimeType() const;
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    void setEncodingSettings(const QAudioEncoderSettings &audioSettings,
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                             const QVideoEncoderSettings &videoSettings = QVideoEncoderSettings(),
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                             const QString &containerMimeType = QString());
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    bool isMetaDataAvailable() const;
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    bool isMetaDataWritable() const;
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    QVariant metaData(QtMultimediaKit::MetaData key) const;
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    void setMetaData(QtMultimediaKit::MetaData key, const QVariant &value);
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    QList<QtMultimediaKit::MetaData> availableMetaData() const;
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    QVariant extendedMetaData(const QString &key) const;
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    void setExtendedMetaData(const QString &key, const QVariant &value);
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    QStringList availableExtendedMetaData() const;
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public Q_SLOTS:
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    void record();
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    void pause();
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    void stop();
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    void setMuted(bool muted);
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Q_SIGNALS:
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    void stateChanged(QMediaRecorder::State state);
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    void durationChanged(qint64 duration);
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    void mutedChanged(bool muted);
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    void error(QMediaRecorder::Error error);
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    void metaDataAvailableChanged(bool available);
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    void metaDataWritableChanged(bool writable);
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    void metaDataChanged();
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protected:
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    bool setMediaObject(QMediaObject *object);
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private:
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    QMediaRecorderPrivate *d_ptr;
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    Q_DISABLE_COPY(QMediaRecorder)
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    Q_DECLARE_PRIVATE(QMediaRecorder)
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    Q_PRIVATE_SLOT(d_func(), void _q_stateChanged(QMediaRecorder::State))
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    Q_PRIVATE_SLOT(d_func(), void _q_error(int, const QString &))
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    Q_PRIVATE_SLOT(d_func(), void _q_serviceDestroyed())
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    Q_PRIVATE_SLOT(d_func(), void _q_notify())
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    Q_PRIVATE_SLOT(d_func(), void _q_updateNotifyInterval(int))
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};
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QT_END_NAMESPACE
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Q_DECLARE_METATYPE(QMediaRecorder::State)
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Q_DECLARE_METATYPE(QMediaRecorder::Error)
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#endif  // QMEDIARECORDER_H