qwasmmediarecorder_p.h

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// Copyright (C) 2022 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 QWASMMEDIARECORDER_H

#define QWASMMEDIARECORDER_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 <QtMultimedia/private/qplatformmediacapture_p.h>

#include <QtMultimedia/private/qplatformmediarecorder_p.h>

#include <QtMultimedia/private/qwasmjs_p.h>

#include <QtCore/qelapsedtimer.h>

#include <QtCore/qglobal.h>

#include <QtCore/qloggingcategory.h>

#include <QtCore/qobject.h>

QT_BEGIN_NAMESPACE

Q_DECLARE_LOGGING_CATEGORY(qWasmMediaRecorder)

class QWasmMediaCaptureSession;

class QIODevice;

class QWasmMediaRecorder final : public QObject, public QPlatformMediaRecorder

    Q_OBJECT

public:

    explicit QWasmMediaRecorder(QMediaRecorder *parent);

    ~QWasmMediaRecorder() final;

    bool isLocationWritable(const QUrl &location) const override;

    QMediaRecorder::RecorderState state() const override;

    qint64 duration() const override;

    void record(QMediaEncoderSettings &settings) override;

    void pause() override;

    void resume() override;

    void stop() override;

    void setCaptureSession(QPlatformMediaCaptureSession *session);

    emscripten::val activeMediaStream() { return m_mediaStream; }

private:

    bool hasCamera() const;

    void startAudioRecording();

    void setStream(emscripten::val stream);

    void startStream();

    void setTrackContraints(QMediaEncoderSettings &settings, emscripten::val stream);

    void initUserMedia();

    void setUpFileSink();

    void initMediaSettings();

    emscripten::val m_mediaRecorder = emscripten::val::undefined();

    emscripten::val m_mediaStream = emscripten::val::undefined();

    QWasmMediaCaptureSession *m_session = nullptr;

    QMediaEncoderSettings m_mediaSettings;

    QIODevice *m_outputTarget;

    std::unique_ptr<JsMediaRecorder> m_jsMediaRecorderDevice;

    QScopedPointer<qstdweb::EventCallback> m_mediaStreamDataAvailable;

    QScopedPointer<qstdweb::EventCallback> m_mediaStreamStopped;

    QScopedPointer<qstdweb::EventCallback> m_mediaStreamError;

    QScopedPointer<qstdweb::EventCallback> m_mediaStreamStart;

    QScopedPointer<qstdweb::EventCallback> m_mediaStreamPause;

    QScopedPointer<qstdweb::EventCallback> m_mediaStreamResume;

    qint64 m_durationMs = 0;

    bool m_isRecording = false;

    QScopedPointer <QElapsedTimer> m_durationTimer;

    bool m_hasMediaSettings = false;

};

QT_END_NAMESPACE

#endif // QWASMMEDIARECORDER_H