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/****************************************************************************
**
** Copyright (C) 2015 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef AVFCONFIGURATIONLOCK_H
#define AVFCONFIGURATIONLOCK_H
#include <QtCore/qglobal.h>
#include <QtCore/qdebug.h>
#include <AVFoundation/AVFoundation.h>
@class AVCaptureDevice;
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;
};
QT_END_NAMESPACE
#endif
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