qandroidcapturesession_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 QANDROIDCAPTURESESSION_H
#define QANDROIDCAPTURESESSION_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 <qobject.h>
#include <qmediarecorder.h>
#include <qurl.h>
#include <qelapsedtimer.h>
#include <qtimer.h>
#include "androidmediarecorder_p.h"
#include "qandroidmediaencoder_p.h"
 
QT_BEGIN_NAMESPACE
 
class QAudioInput;
class QAndroidCameraSession;
 
class QAndroidCaptureSession : public QObject
{
    Q_OBJECT
public:
    explicit QAndroidCaptureSession();
    ~QAndroidCaptureSession();
 
    QList<QSize> supportedResolutions() const { return m_supportedResolutions; }
    QList<qreal> supportedFrameRates() const { return m_supportedFramerates; }
 
    void setCameraSession(QAndroidCameraSession *cameraSession = 0);
    void setAudioInput(QPlatformAudioInput *input);
    void setAudioOutput(QPlatformAudioOutput *output);
 
    QMediaRecorder::RecorderState state() const;
 
    void start(QMediaEncoderSettings &settings, const QUrl &outputLocation);
    void stop(bool error = false);
 
    qint64 duration() const;
 
    QMediaEncoderSettings encoderSettings() { return m_encoderSettings; }
 
    void setMediaEncoder(QAndroidMediaEncoder *encoder) { m_mediaEncoder = encoder; }
 
    void stateChanged(QMediaRecorder::RecorderState state) {
        if (m_mediaEncoder)
            m_mediaEncoder->stateChanged(state);
    }
    void durationChanged(qint64 position)
    {
        if (m_mediaEncoder)
            m_mediaEncoder->durationChanged(position);
    }
    void actualLocationChanged(const QUrl &location)
    {
        if (m_mediaEncoder)
            m_mediaEncoder->actualLocationChanged(location);
    }
    void updateError(int error, const QString &errorString)
    {
        if (m_mediaEncoder)
            m_mediaEncoder->updateError(QMediaRecorder::Error(error), errorString);
    }
 
private Q_SLOTS:
    void updateDuration();
    void onCameraOpened();
 
    void onError(int what, int extra);
    void onInfo(int what, int extra);
 
private:
    void applySettings(QMediaEncoderSettings &settings);
 
    struct CaptureProfile {
        AndroidMediaRecorder::OutputFormat outputFormat;
        QString outputFileExtension;
 
        AndroidMediaRecorder::AudioEncoder audioEncoder;
        int audioBitRate;
        int audioChannels;
        int audioSampleRate;
 
        AndroidMediaRecorder::VideoEncoder videoEncoder;
        int videoBitRate;
        int videoFrameRate;
        QSize videoResolution;
 
        bool isNull;
 
        CaptureProfile()
            : outputFormat(AndroidMediaRecorder::MPEG_4)
            , outputFileExtension(QLatin1String("mp4"))
            , audioEncoder(AndroidMediaRecorder::DefaultAudioEncoder)
            , audioBitRate(128000)
            , audioChannels(2)
            , audioSampleRate(44100)
            , videoEncoder(AndroidMediaRecorder::DefaultVideoEncoder)
            , videoBitRate(1)
            , videoFrameRate(-1)
            , videoResolution(1280, 720)
            , isNull(true)
        { }
    };
 
    CaptureProfile getProfile(int id);
 
    void restartViewfinder();
    void updateStreamingState();
 
    QAndroidMediaEncoder *m_mediaEncoder = nullptr;
    std::shared_ptr<AndroidMediaRecorder> m_mediaRecorder;
    QAndroidCameraSession *m_cameraSession;
 
    QPlatformAudioInput *m_audioInput = nullptr;
    QPlatformAudioOutput *m_audioOutput = nullptr;
 
    QElapsedTimer m_elapsedTime;
    QTimer m_notifyTimer;
    qint64 m_duration;
 
    QMediaRecorder::RecorderState m_state;
    QUrl m_usedOutputLocation;
    bool m_outputLocationIsStandard = false;
 
    CaptureProfile m_defaultSettings;
 
    QMediaEncoderSettings m_encoderSettings;
    AndroidMediaRecorder::OutputFormat m_outputFormat;
    AndroidMediaRecorder::AudioEncoder m_audioEncoder;
    AndroidMediaRecorder::VideoEncoder m_videoEncoder;
 
    QList<QSize> m_supportedResolutions;
    QList<qreal> m_supportedFramerates;
 
    QMetaObject::Connection m_audioInputChanged;
    QMetaObject::Connection m_audioOutputChanged;
    QMetaObject::Connection m_connOpenCamera;
    QMetaObject::Connection m_connActiveChangedCamera;
 
    void setKeepAlive(bool keepAlive);
 
};
 
QT_END_NAMESPACE
 
#endif // QANDROIDCAPTURESESSION_H