qt-everywhere-src-5.15.1/qtmultimedia/src/multimedia/audio/qaudiosystem.h

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#ifndef QAUDIOSYSTEM_H
#define QAUDIOSYSTEM_H

#include <QtMultimedia/qtmultimediaglobal.h>
#include <QtMultimedia/qmultimedia.h>

#include <QtMultimedia/qaudio.h>
#include <QtMultimedia/qaudioformat.h>
#include <QtMultimedia/qaudiodeviceinfo.h>

QT_BEGIN_NAMESPACE

class QIODevice;

class Q_MULTIMEDIA_EXPORT QAbstractAudioDeviceInfo : public QObject
{
    Q_OBJECT

public:
    virtual QAudioFormat preferredFormat() const = 0;
    virtual bool isFormatSupported(const QAudioFormat &format) const = 0;
    virtual QString deviceName() const = 0;
    virtual QStringList supportedCodecs() = 0;
    virtual QList<int> supportedSampleRates() = 0;
    virtual QList<int> supportedChannelCounts() = 0;
    virtual QList<int> supportedSampleSizes() = 0;
    virtual QList<QAudioFormat::Endian> supportedByteOrders() = 0;
    virtual QList<QAudioFormat::SampleType> supportedSampleTypes() = 0;
};

class Q_MULTIMEDIA_EXPORT QAbstractAudioOutput : public QObject
{
    Q_OBJECT

public:
    virtual void start(QIODevice *device) = 0;
    virtual QIODevice* start() = 0;
    virtual void stop() = 0;
    virtual void reset() = 0;
    virtual void suspend() = 0;
    virtual void resume() = 0;
    virtual int bytesFree() const = 0;
    virtual int periodSize() const = 0;
    virtual void setBufferSize(int value) = 0;
    virtual int bufferSize() const = 0;
    virtual void setNotifyInterval(int milliSeconds) = 0;
    virtual int notifyInterval() const = 0;
    virtual qint64 processedUSecs() const = 0;
    virtual qint64 elapsedUSecs() const = 0;
    virtual QAudio::Error error() const = 0;
    virtual QAudio::State state() const = 0;
    virtual void setFormat(const QAudioFormat& fmt) = 0;
    virtual QAudioFormat format() const = 0;
    virtual void setVolume(qreal) {}
    virtual qreal volume() const { return 1.0; }
    virtual QString category() const { return QString(); }
    virtual void setCategory(const QString &) { }

Q_SIGNALS:
    void errorChanged(QAudio::Error error);
    void stateChanged(QAudio::State state);
    void notify();
};

class Q_MULTIMEDIA_EXPORT QAbstractAudioInput : public QObject
{
    Q_OBJECT

public:
    virtual void start(QIODevice *device) = 0;
    virtual QIODevice* start() = 0;
    virtual void stop() = 0;
    virtual void reset() = 0;
    virtual void suspend()  = 0;
    virtual void resume() = 0;
    virtual int bytesReady() const = 0;
    virtual int periodSize() const = 0;
    virtual void setBufferSize(int value) = 0;
    virtual int bufferSize() const = 0;
    virtual void setNotifyInterval(int milliSeconds) = 0;
    virtual int notifyInterval() const = 0;
    virtual qint64 processedUSecs() const = 0;
    virtual qint64 elapsedUSecs() const = 0;
    virtual QAudio::Error error() const = 0;
    virtual QAudio::State state() const = 0;
    virtual void setFormat(const QAudioFormat& fmt) = 0;
    virtual QAudioFormat format() const = 0;
    virtual void setVolume(qreal) = 0;
    virtual qreal volume() const = 0;

Q_SIGNALS:
    void errorChanged(QAudio::Error error);
    void stateChanged(QAudio::State state);
    void notify();
};

QT_END_NAMESPACE

#endif // QAUDIOSYSTEM_H