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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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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