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/****************************************************************************
**
** 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
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