diff options
Diffstat (limited to 'src/plugins/avfoundation/camera/avfcamerautility.h')
-rw-r--r-- | src/plugins/avfoundation/camera/avfcamerautility.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/plugins/avfoundation/camera/avfcamerautility.h b/src/plugins/avfoundation/camera/avfcamerautility.h new file mode 100644 index 000000000..03a61460f --- /dev/null +++ b/src/plugins/avfoundation/camera/avfcamerautility.h @@ -0,0 +1,117 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://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 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef AVFCAMERAUTILITY_H +#define AVFCAMERAUTILITY_H + +#include <QtCore/qsysinfo.h> +#include <QtCore/qglobal.h> +#include <QtCore/qvector.h> +#include <QtCore/qdebug.h> +#include <QtCore/qsize.h> +#include <QtCore/qpair.h> + +#include <AVFoundation/AVFoundation.h> + +// In case we have SDK below 10.7/7.0: +@class AVCaptureDeviceFormat; + +QT_BEGIN_NAMESPACE + +class AVFConfigurationLock +{ +public: + explicit AVFConfigurationLock(AVCaptureDevice *captureDevice) + : m_captureDevice(captureDevice), + m_locked(false) + { + Q_ASSERT(m_captureDevice); + NSError *error = nil; + m_locked = [m_captureDevice lockForConfiguration:&error]; + } + + ~AVFConfigurationLock() + { + if (m_locked) + [m_captureDevice unlockForConfiguration]; + } + + operator bool() const + { + return m_locked; + } + +private: + Q_DISABLE_COPY(AVFConfigurationLock) + + AVCaptureDevice *m_captureDevice; + bool m_locked; +}; + +inline QSysInfo::MacVersion qt_OS_limit(QSysInfo::MacVersion osxVersion, + QSysInfo::MacVersion iosVersion) +{ +#ifdef Q_OS_OSX + Q_UNUSED(iosVersion) + return osxVersion; +#else + Q_UNUSED(osxVersion) + return iosVersion; +#endif +} + +typedef QPair<qreal, qreal> AVFPSRange; +AVFPSRange qt_connection_framerates(AVCaptureConnection *videoConnection); +typedef QPair<int, int> AVFRational; +AVFRational qt_float_to_rational(qreal par, int limit); + +#if QT_MAC_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_7, __IPHONE_7_0) + +QVector<AVCaptureDeviceFormat *> qt_unique_device_formats(AVCaptureDevice *captureDevice, + FourCharCode preferredFormat); +QSize qt_device_format_resolution(AVCaptureDeviceFormat *format); +QSize qt_device_format_high_resolution(AVCaptureDeviceFormat *format); +QSize qt_device_format_pixel_aspect_ratio(AVCaptureDeviceFormat *format); +QVector<AVFPSRange> qt_device_format_framerates(AVCaptureDeviceFormat *format); +AVCaptureDeviceFormat *qt_find_best_resolution_match(AVCaptureDevice *captureDevice, const QSize &res, + FourCharCode preferredFormat); +AVCaptureDeviceFormat *qt_find_best_framerate_match(AVCaptureDevice *captureDevice, + FourCharCode preferredFormat, + Float64 fps); +AVFrameRateRange *qt_find_supported_framerate_range(AVCaptureDeviceFormat *format, Float64 fps); + +#endif + +QT_END_NAMESPACE + +#endif |