1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins 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 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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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
|
