avfmediaencoder_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 AVFMEDIAENCODER_H
#define AVFMEDIAENCODER_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/qaudiodevice.h>
#include <QtMultimedia/qmediametadata.h>
#include <QtMultimedia/private/qavfcamerautility_p.h>
#include <QtMultimedia/private/qplatformmediacapture_p.h>
#include <QtMultimedia/private/qplatformmediarecorder_p.h>
#include <QtCore/qglobal.h>
#include <QtCore/qurl.h>
 
#include <camera/avfmediaassetwriter_p.h>
 
#import <AVFoundation/AVFoundation.h>
 
QT_BEGIN_NAMESPACE
 
class AVFCameraService;
class QString;
class QUrl;
 
class AVFMediaEncoder : public QObject, public QPlatformMediaRecorder
{
    Q_OBJECT
public:
    AVFMediaEncoder(QMediaRecorder *parent);
    ~AVFMediaEncoder() override;
 
    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 setMetaData(const QMediaMetaData &) override;
    QMediaMetaData metaData() const override;
 
    AVFCameraService *cameraService() const { return m_service; }
 
    void setCaptureSession(QPlatformMediaCaptureSession *session);
 
    void updateDuration(qint64 duration);
 
    void toggleRecord(bool enable);
 
private:
    void applySettings(QMediaEncoderSettings &settings);
    void unapplySettings();
 
    Q_INVOKABLE void assetWriterStarted();
    Q_INVOKABLE void assetWriterFinished();
    Q_INVOKABLE void assetWriterError(QString error);
 
private Q_SLOTS:
    void onCameraChanged();
    void cameraActiveChanged(bool);
 
private:
    void stopWriter();
 
    AVFCameraService *m_service = nullptr;
    AVFScopedPointer<QT_MANGLE_NAMESPACE(AVFMediaAssetWriter)> m_writer;
 
    QMediaRecorder::RecorderState m_state;
 
    QMediaMetaData m_metaData;
 
    qint64 m_duration;
 
    NSDictionary *m_audioSettings;
    NSDictionary *m_videoSettings;
};
 
QT_END_NAMESPACE
 
#endif // AVFMEDIAENCODER_H