qt-everywhere-src-5.15.1/qtmultimedia/src/multimedia/camera/qcameraimagecapture.h

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#ifndef QCAMERAIMAGECAPTURE_H
#define QCAMERAIMAGECAPTURE_H

#include <QtMultimedia/qmediaobject.h>
#include <QtMultimedia/qmediaencodersettings.h>
#include <QtMultimedia/qmediabindableinterface.h>
#include <QtMultimedia/qvideoframe.h>

#include <QtMultimedia/qmediaenumdebug.h>

QT_BEGIN_NAMESPACE

class QSize;
QT_END_NAMESPACE

QT_BEGIN_NAMESPACE

class QImageEncoderSettings;

class QCameraImageCapturePrivate;
class Q_MULTIMEDIA_EXPORT QCameraImageCapture : public QObject, public QMediaBindableInterface
{
    Q_OBJECT
    Q_INTERFACES(QMediaBindableInterface)
    Q_ENUMS(Error)
    Q_ENUMS(CaptureDestination)
    Q_PROPERTY(bool readyForCapture READ isReadyForCapture NOTIFY readyForCaptureChanged)
public:
    enum Error
    {
        NoError,
        NotReadyError,
        ResourceError,
        OutOfSpaceError,
        NotSupportedFeatureError,
        FormatError
    };

    enum DriveMode
    {
        SingleImageCapture
    };

    enum CaptureDestination
    {
        CaptureToFile = 0x01,
        CaptureToBuffer = 0x02
    };
    Q_DECLARE_FLAGS(CaptureDestinations, CaptureDestination)

    explicit QCameraImageCapture(QMediaObject *mediaObject, QObject *parent = nullptr);
    ~QCameraImageCapture();

    bool isAvailable() const;
    QMultimedia::AvailabilityStatus availability() const;

    QMediaObject *mediaObject() const override;

    Error error() const;
    QString errorString() const;

    bool isReadyForCapture() const;

    QStringList supportedImageCodecs() const;
    QString imageCodecDescription(const QString &codecName) const;

    QList<QSize> supportedResolutions(const QImageEncoderSettings &settings = QImageEncoderSettings(),
                                      bool *continuous = nullptr) const;

    QImageEncoderSettings encodingSettings() const;
    void setEncodingSettings(const QImageEncoderSettings& settings);

    QList<QVideoFrame::PixelFormat> supportedBufferFormats() const;
    QVideoFrame::PixelFormat bufferFormat() const;
    void setBufferFormat(const QVideoFrame::PixelFormat format);

    bool isCaptureDestinationSupported(CaptureDestinations destination) const;
    CaptureDestinations captureDestination() const;
    void setCaptureDestination(CaptureDestinations destination);

public Q_SLOTS:
    int capture(const QString &location = QString());
    void cancelCapture();

Q_SIGNALS:
    void error(int id, QCameraImageCapture::Error error, const QString &errorString);

    void readyForCaptureChanged(bool ready);
    void bufferFormatChanged(QVideoFrame::PixelFormat format);
    void captureDestinationChanged(QCameraImageCapture::CaptureDestinations destination);

    void imageExposed(int id);
    void imageCaptured(int id, const QImage &preview);
    void imageMetadataAvailable(int id, const QString &key, const QVariant &value);
    void imageAvailable(int id, const QVideoFrame &frame);
    void imageSaved(int id, const QString &fileName);

protected:
    bool setMediaObject(QMediaObject *) override;

    QCameraImageCapturePrivate *d_ptr;
private:
    Q_DISABLE_COPY(QCameraImageCapture)
    Q_DECLARE_PRIVATE(QCameraImageCapture)
    Q_PRIVATE_SLOT(d_func(), void _q_error(int, int, const QString &))
    Q_PRIVATE_SLOT(d_func(), void _q_readyChanged(bool))
    Q_PRIVATE_SLOT(d_func(), void _q_serviceDestroyed())
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QCameraImageCapture::CaptureDestinations)

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QCameraImageCapture::Error)
Q_DECLARE_METATYPE(QCameraImageCapture::CaptureDestination)
Q_DECLARE_METATYPE(QCameraImageCapture::CaptureDestinations)

Q_MEDIA_ENUM_DEBUG(QCameraImageCapture, Error)
Q_MEDIA_ENUM_DEBUG(QCameraImageCapture, CaptureDestination)

#endif