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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
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**
**
****************************************************************************/
#ifndef DIRECTSHOWCAMERAEXPOSURECONTROL_H
#define DIRECTSHOWCAMERAEXPOSURECONTROL_H
#include <QtMultimedia/qcameraexposurecontrol.h>
struct IAMCameraControl;
QT_BEGIN_NAMESPACE
class DSCameraSession;
class DirectShowCameraExposureControl : public QCameraExposureControl
{
Q_OBJECT
public:
DirectShowCameraExposureControl(DSCameraSession *session);
bool isParameterSupported(ExposureParameter parameter) const override;
QVariantList supportedParameterRange(ExposureParameter parameter, bool *continuous) const override;
QVariant requestedValue(ExposureParameter parameter) const override;
QVariant actualValue(ExposureParameter parameter) const override;
bool setValue(ExposureParameter parameter, const QVariant &value) override;
private Q_SLOTS:
void onStatusChanged(QCamera::Status status);
private:
DSCameraSession *m_session;
struct ExposureValues
{
long caps;
long minValue;
long maxValue;
long stepping;
long defaultValue;
} m_shutterSpeedValues, m_apertureValues;
qreal m_requestedShutterSpeed;
qreal m_currentShutterSpeed;
qreal m_requestedAperture;
qreal m_currentAperture;
QVariantList m_supportedShutterSpeeds;
QVariantList m_supportedApertureValues;
QVariantList m_supportedExposureModes;
QCameraExposure::ExposureMode m_requestedExposureMode;
QCameraExposure::ExposureMode m_currentExposureMode;
void updateExposureSettings();
bool setShutterSpeed(IAMCameraControl *cameraControl, qreal shutterSpeed);
bool setAperture(IAMCameraControl *cameraControl, qreal aperture);
bool setExposureMode(IAMCameraControl *cameraControl, QCameraExposure::ExposureMode mode);
};
QT_END_NAMESPACE
#endif // DIRECTSHOWCAMERAEXPOSURECONTROL_H
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