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/****************************************************************************
**
** Copyright (C) 2016 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 QCAMERACONTROL_H
#define QCAMERACONTROL_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 <QtCore/qobject.h>
#include <QtMultimedia/qtmultimediaglobal.h>
#include <QtMultimedia/qcamera.h>
QT_BEGIN_NAMESPACE
class QPlatformCameraExposure;
class QPlatformCameraImageProcessing;
class Q_MULTIMEDIA_EXPORT QPlatformCamera : public QObject
{
Q_OBJECT
public:
virtual bool isActive() const = 0;
virtual void setActive(bool active) = 0;
virtual QCamera::Status status() const { return m_status; }
virtual void setCamera(const QCameraInfo &camera) = 0;
virtual bool setCameraFormat(const QCameraFormat &/*format*/) { return false; }
virtual void setCaptureSession(QPlatformMediaCaptureSession *) {}
virtual QPlatformCameraExposure *exposureControl() { return nullptr; }
virtual QPlatformCameraImageProcessing *imageProcessingControl() { return nullptr; }
virtual bool isFocusModeSupported(QCamera::FocusMode mode) const { return mode == QCamera::FocusModeAuto; }
virtual void setFocusMode(QCamera::FocusMode /*mode*/) {}
virtual bool isCustomFocusPointSupported() const { return false; }
virtual void setCustomFocusPoint(const QPointF &/*point*/) {}
virtual void setFocusDistance(float) {}
// smaller 0: zoom instantly, rate in power-of-two/sec
virtual void zoomTo(float /*newZoomFactor*/, float /*rate*/ = -1.) {}
QCamera::FocusMode focusMode() const { return m_focusMode; }
QPointF focusPoint() const { return m_customFocusPoint; }
float minZoomFactor() const { return m_minZoom; }
float maxZoomFactor() const { return m_maxZoom; }
float zoomFactor() const { return m_zoomFactor; }
QPointF customFocusPoint() const { return m_customFocusPoint; }
float focusDistance() const { return m_focusDistance; }
void statusChanged(QCamera::Status);
void minimumZoomFactorChanged(float factor);
void maximumZoomFactorChanged(float);
void focusModeChanged(QCamera::FocusMode mode);
void customFocusPointChanged(const QPointF &point);
void focusDistanceChanged(float d);
void zoomFactorChanged(float zoom);
Q_SIGNALS:
void activeChanged(bool);
void error(int error, const QString &errorString);
protected:
explicit QPlatformCamera(QCamera *parent);
static QCameraFormat findBestCameraFormat(const QCameraInfo &camera);
private:
QCamera *m_camera = nullptr;
QCamera::Status m_status = QCamera::InactiveStatus;
QCamera::FocusMode m_focusMode = QCamera::FocusModeAuto;
float m_minZoom = 1.;
float m_maxZoom = 1.;
float m_zoomFactor = 1.;
float m_focusDistance = 1.;
QPointF m_customFocusPoint{.5, .5};
};
QT_END_NAMESPACE
#endif // QCAMERACONTROL_H
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