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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