qt-everywhere-src-5.14.1/qtmultimedia/src/plugins/gstreamer/camerabin/camerabinimagecapture.h

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#ifndef CAMERABINIMAGECAPTURECONTROL_H
#define CAMERABINIMAGECAPTURECONTROL_H

#include <qcameraimagecapturecontrol.h>
#include "camerabinsession.h"

#include <qvideosurfaceformat.h>

#include <private/qgstreamerbufferprobe_p.h>

#if GST_CHECK_VERSION(1,0,0)
#include <gst/video/video.h>
#endif

QT_BEGIN_NAMESPACE

class CameraBinImageCapture : public QCameraImageCaptureControl, public QGstreamerBusMessageFilter
{
    Q_OBJECT
    Q_INTERFACES(QGstreamerBusMessageFilter)
public:
    CameraBinImageCapture(CameraBinSession *session);
    virtual ~CameraBinImageCapture();

    QCameraImageCapture::DriveMode driveMode() const override { return QCameraImageCapture::SingleImageCapture; }
    void setDriveMode(QCameraImageCapture::DriveMode) override {}

    bool isReadyForCapture() const override;
    int capture(const QString &fileName) override;
    void cancelCapture() override;

    bool processBusMessage(const QGstreamerMessage &message) override;

private slots:
    void updateState();

private:
#if GST_CHECK_VERSION(1,0,0)
    static GstPadProbeReturn encoderEventProbe(GstPad *, GstPadProbeInfo *info, gpointer user_data);
#else
    static gboolean encoderEventProbe(GstElement *, GstEvent *event, gpointer user_data);
#endif

    class EncoderProbe : public QGstreamerBufferProbe
    {
    public:
        EncoderProbe(CameraBinImageCapture *capture) : capture(capture) {}
        void probeCaps(GstCaps *caps) override;
        bool probeBuffer(GstBuffer *buffer) override;

    private:
        CameraBinImageCapture * const capture;
    } m_encoderProbe;

    class MuxerProbe : public QGstreamerBufferProbe
    {
    public:
        MuxerProbe(CameraBinImageCapture *capture) : capture(capture) {}
        void probeCaps(GstCaps *caps) override;
        bool probeBuffer(GstBuffer *buffer) override;

    private:
        CameraBinImageCapture * const capture;

    } m_muxerProbe;

    QVideoSurfaceFormat m_bufferFormat;
    QSize m_jpegResolution;
    CameraBinSession *m_session;
    GstElement *m_jpegEncoderElement;
    GstElement *m_metadataMuxerElement;
#if GST_CHECK_VERSION(1,0,0)
    GstVideoInfo m_videoInfo;
#else
    int m_bytesPerLine;
#endif
    int m_requestId;
    bool m_ready;
};

QT_END_NAMESPACE

#endif // CAMERABINCAPTURECORNTROL_H