qaudiodecoder.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QAUDIODECODER_H
#define QAUDIODECODER_H
 
#include <QtCore/qobject.h>
#include <QtMultimedia/qmediaenumdebug.h>
 
#include <QtMultimedia/qaudiobuffer.h>
 
QT_BEGIN_NAMESPACE
 
class QPlatformAudioDecoder;
class Q_MULTIMEDIA_EXPORT QAudioDecoder : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
    Q_PROPERTY(bool isDecoding READ isDecoding NOTIFY isDecodingChanged)
    Q_PROPERTY(QString error READ errorString)
    Q_PROPERTY(bool bufferAvailable READ bufferAvailable NOTIFY bufferAvailableChanged)
 
public:
    enum Error
    {
        NoError,
        ResourceError,
        FormatError,
        AccessDeniedError,
        NotSupportedError
    };
    Q_ENUM(Error)
 
    explicit QAudioDecoder(QObject *parent = nullptr);
    ~QAudioDecoder();
 
    bool isSupported() const;
    bool isDecoding() const;
 
    QUrl source() const;
    void setSource(const QUrl &fileName);
 
    QIODevice* sourceDevice() const;
    void setSourceDevice(QIODevice *device);
 
    QAudioFormat audioFormat() const;
    void setAudioFormat(const QAudioFormat &format);
 
    Error error() const;
    QString errorString() const;
 
    QAudioBuffer read() const;
    bool bufferAvailable() const;
 
    qint64 position() const;
    qint64 duration() const;
 
public Q_SLOTS:
    void start();
    void stop();
 
Q_SIGNALS:
    void bufferAvailableChanged(bool);
    void bufferReady();
    void finished();
    void isDecodingChanged(bool);
 
    void formatChanged(const QAudioFormat &format);
 
    void error(QAudioDecoder::Error error);
 
    void sourceChanged();
 
    void positionChanged(qint64 position);
    void durationChanged(qint64 duration);
 
private:
    Q_DISABLE_COPY(QAudioDecoder)
    QPlatformAudioDecoder *decoder = nullptr;
};
 
QT_END_NAMESPACE
 
Q_MEDIA_ENUM_DEBUG(QAudioDecoder, Error)
 
#endif  // QAUDIODECODER_H