qgstreamermediarecorder_p.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 QGSTREAMERMEDIARECORDER_H

#define QGSTREAMERMEDIARECORDER_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <mediacapture/qgstreamermediacapturesession_p.h>

#include <common/qgstreamermetadata_p.h>

#include <QtMultimedia/private/qplatformmediarecorder_p.h>

#include <QtCore/qurl.h>

#include <QtCore/qtimer.h>

QT_BEGIN_NAMESPACE

class QMediaMetaData;

class QGstreamerMessage;

class QGstreamerMediaRecorder : public QPlatformMediaRecorder

public:

    explicit QGstreamerMediaRecorder(QMediaRecorder *parent);

    ~QGstreamerMediaRecorder() override;

    bool isLocationWritable(const QUrl &sink) const override;

    qint64 duration() const override;

    void record(QMediaEncoderSettings &settings) override;

    void pause() override;

    void resume() override;

    void stop() override;

    void setMetaData(const QMediaMetaData &) override;

    QMediaMetaData metaData() const override;

    void setCaptureSession(QPlatformMediaCaptureSession *session);

    void processBusMessage(const QGstreamerMessage &message);

private:

    struct PauseControl {

        explicit PauseControl(QPlatformMediaRecorder &encoder) : encoder(encoder) { }

        GstPadProbeReturn processBuffer(const QGstPad& pad, GstPadProbeInfo *info);

        void installOn(QGstPad pad);

        void reset();

        QPlatformMediaRecorder &encoder;

        GstClockTime pauseOffsetPts = 0;

        std::optional<GstClockTime> pauseStartPts;

        std::optional<GstClockTime> firstBufferPts;

        qint64 duration = 0;

};

    PauseControl audioPauseControl;

    PauseControl videoPauseControl;

    void handleSessionError(QMediaRecorder::Error code, const QString &description);

    void finalize();

    QGstreamerMediaCaptureSession *m_session = nullptr;

    QMediaMetaData m_metaData;

    QTimer signalDurationChangedTimer;

    bool m_finalizing = false;

};

QT_END_NAMESPACE

#endif // QGSTREAMERMEDIARECORDER_H