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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 <private/qplatformmediarecorder_p.h>
#include <private/qplatformmediacapture_p.h>
#include <QtCore/qglobal.h>
#include <QtCore/qloggingcategory.h>
#include <QElapsedTimer>
#include <emscripten.h>
#include <emscripten/val.h>
#include <emscripten/bind.h>
#include <private/qstdweb_p.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);
private:
bool hasCamera() const;
void startAudioRecording();
void setStream(emscripten::val stream);
void streamCallback(emscripten::val event);
void exceptionCallback(emscripten::val event);
void dataAvailableCallback(emscripten::val dataEvent);
void startStream();
void setTrackContraints(QMediaEncoderSettings &settings, emscripten::val stream);
void initUserMedia();
void audioDataAvailable(emscripten::val Blob, double timeCodeDifference);
void setUpFileSink();
emscripten::val m_mediaRecorder = emscripten::val::undefined();
emscripten::val m_mediaStream = emscripten::val::undefined();
QWasmMediaCaptureSession *m_session = nullptr;
QMediaEncoderSettings m_mediaSettings;
QIODevice *m_outputTarget;
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;
private Q_SLOTS:
};
QT_END_NAMESPACE
#endif // QWASMMEDIARECORDER_H
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