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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdeclarativecamerapreviewprovider_p.h"
#include <QtCore/qmutex.h>
#include <QtCore/qdebug.h>
QT_BEGIN_NAMESPACE
struct QDeclarativeCameraPreviewProviderPrivate
{
QString id;
QImage image;
QMutex mutex;
};
Q_GLOBAL_STATIC(QDeclarativeCameraPreviewProviderPrivate, qDeclarativeCameraPreviewProviderPrivate)
QDeclarativeCameraPreviewProvider::QDeclarativeCameraPreviewProvider()
: QQuickImageProvider(QQuickImageProvider::Image)
{
}
QDeclarativeCameraPreviewProvider::~QDeclarativeCameraPreviewProvider()
{
QDeclarativeCameraPreviewProviderPrivate *d = qDeclarativeCameraPreviewProviderPrivate();
QMutexLocker lock(&d->mutex);
d->id.clear();
d->image = QImage();
}
QImage QDeclarativeCameraPreviewProvider::requestImage(const QString &id, QSize *size, const QSize& requestedSize)
{
QDeclarativeCameraPreviewProviderPrivate *d = qDeclarativeCameraPreviewProviderPrivate();
QMutexLocker lock(&d->mutex);
if (d->id != id)
return QImage();
QImage res = d->image;
if (!requestedSize.isEmpty())
res = res.scaled(requestedSize, Qt::KeepAspectRatio, Qt::SmoothTransformation);
if (size)
*size = res.size();
return res;
}
void QDeclarativeCameraPreviewProvider::registerPreview(const QString &id, const QImage &preview)
{
//only the last preview is kept
QDeclarativeCameraPreviewProviderPrivate *d = qDeclarativeCameraPreviewProviderPrivate();
QMutexLocker lock(&d->mutex);
d->id = id;
d->image = preview;
}
QT_END_NAMESPACE
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