qavfcamera_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 QAVFCAMERA_H
#define QAVFCAMERA_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 "qavfcamerabase_p.h"
#include <private/qplatformmediaintegration_p.h>
#include <private/qvideooutputorientationhandler_p.h>
#define AVMediaType XAVMediaType
#include "qffmpeghwaccel_p.h"
#undef AVMediaType
 
#include <qfilesystemwatcher.h>
#include <qsocketnotifier.h>
#include <qmutex.h>
 
#include <dispatch/dispatch.h>
 
Q_FORWARD_DECLARE_OBJC_CLASS(AVCaptureSession);
Q_FORWARD_DECLARE_OBJC_CLASS(AVCaptureDeviceInput);
Q_FORWARD_DECLARE_OBJC_CLASS(AVCaptureVideoDataOutput);
Q_FORWARD_DECLARE_OBJC_CLASS(AVCaptureDevice);
Q_FORWARD_DECLARE_OBJC_CLASS(QAVFSampleBufferDelegate);
 
QT_BEGIN_NAMESPACE
 
class QFFmpegVideoSink;
 
class QAVFCamera : public QAVFCameraBase
{
    Q_OBJECT
 
public:
    explicit QAVFCamera(QCamera *parent);
    ~QAVFCamera();
 
    bool isActive() const override;
    void setActive(bool active) override;
 
    void setCaptureSession(QPlatformMediaCaptureSession *) override;
 
    void setCamera(const QCameraDevice &camera) override;
    bool setCameraFormat(const QCameraFormat &format) override;
 
    void syncHandleFrame(const QVideoFrame &frame);
 
    void deviceOrientationChanged(int angle = -1);
 
    std::optional<int> ffmpegHWPixelFormat() const override;
 
    int cameraPixelFormatScore(QVideoFrameFormat::PixelFormat pixelFmt,
                               QVideoFrameFormat::ColorRange colorRange) const override;
 
private:
    bool checkCameraPermission();
    void updateCameraFormat();
    void updateVideoInput();
    void attachVideoInputDevice();
    uint32_t setPixelFormat(QVideoFrameFormat::PixelFormat pixelFormat, uint32_t inputCvPixFormat);
    QSize adjustedResolution() const;
 
    AVCaptureDevice *device() const;
 
    QMediaCaptureSession *m_session = nullptr;
    AVCaptureSession *m_captureSession = nullptr;
    AVCaptureDeviceInput *m_videoInput = nullptr;
    AVCaptureVideoDataOutput *m_videoDataOutput = nullptr;
    QAVFSampleBufferDelegate *m_sampleBufferDelegate = nullptr;
    dispatch_queue_t m_delegateQueue;
    QVideoOutputOrientationHandler m_orientationHandler;
    AVPixelFormat m_hwPixelFormat = AV_PIX_FMT_NONE;
};
 
QT_END_NAMESPACE
 
 
#endif  // QFFMPEGCAMERA_H