diff options
Diffstat (limited to 'src/plugins/directshow/camera/directshowcamerazoomcontrol.h')
-rw-r--r-- | src/plugins/directshow/camera/directshowcamerazoomcontrol.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/plugins/directshow/camera/directshowcamerazoomcontrol.h b/src/plugins/directshow/camera/directshowcamerazoomcontrol.h new file mode 100644 index 000000000..f6fb05b0e --- /dev/null +++ b/src/plugins/directshow/camera/directshowcamerazoomcontrol.h @@ -0,0 +1,88 @@ +/**************************************************************************** +** +** 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 DIRECTSHOWCAMERAZOOMCONTROL_H +#define DIRECTSHOWCAMERAZOOMCONTROL_H + +#include <QtMultimedia/qcamerazoomcontrol.h> +#include <QtMultimedia/qcamera.h> + +QT_BEGIN_NAMESPACE + +class DSCameraSession; + +class DirectShowCameraZoomControl : public QCameraZoomControl +{ + Q_OBJECT +public: + DirectShowCameraZoomControl(DSCameraSession *session); + + qreal maximumOpticalZoom() const override; + qreal maximumDigitalZoom() const override; + qreal requestedOpticalZoom() const override; + qreal requestedDigitalZoom() const override; + qreal currentOpticalZoom() const override; + qreal currentDigitalZoom() const override; + void zoomTo(qreal optical, qreal digital) override; + +private Q_SLOTS: + void onStatusChanged(QCamera::Status status); + +private: + DSCameraSession *m_session; + struct ZoomValues + { + long maxZoom; + long minZoom; + long stepping; + long defaultZoom; + long caps; + } m_opticalZoom; + + qreal m_currentOpticalZoom; + qreal m_requestedOpticalZoom; + qreal m_maxOpticalZoom; + + void updateZoomValues(); + bool opticalZoomToPrivate(qreal value); +}; + +QT_END_NAMESPACE + +#endif // DIRECTSHOWCAMERAZOOMCONTROL_H |