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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qtest.h>
#include <QImage>
class tst_QImageScale : public QObject
{
Q_OBJECT
private slots:
void scaleRgb32_data();
void scaleRgb32();
void scaleArgb32pm_data();
void scaleArgb32pm();
private:
QImage generateImageRgb32(int width, int height);
QImage generateImageArgb32(int width, int height);
};
void tst_QImageScale::scaleRgb32_data()
{
QTest::addColumn<QImage>("inputImage");
QTest::addColumn<QSize>("outputSize");
QImage image = generateImageRgb32(1000, 1000);
QTest::newRow("1000x1000 -> 2000x2000") << image << QSize(2000, 2000);
QTest::newRow("1000x1000 -> 2000x1000") << image << QSize(2000, 1000);
QTest::newRow("1000x1000 -> 1000x2000") << image << QSize(1000, 2000);
QTest::newRow("1000x1000 -> 2000x500") << image << QSize(2000, 500);
QTest::newRow("1000x1000 -> 500x2000") << image << QSize(500, 2000);
QTest::newRow("1000x1000 -> 500x500") << image << QSize(500, 500);
QTest::newRow("1000x1000 -> 200x200") << image << QSize(200, 200);
}
void tst_QImageScale::scaleRgb32()
{
QFETCH(QImage, inputImage);
QFETCH(QSize, outputSize);
QBENCHMARK {
volatile QImage output = inputImage.scaled(outputSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
// we need the volatile and the following to make sure the compiler does not do
// anything stupid :)
(void)output;
}
}
void tst_QImageScale::scaleArgb32pm_data()
{
QTest::addColumn<QImage>("inputImage");
QTest::addColumn<QSize>("outputSize");
QImage image = generateImageArgb32(1000, 1000).convertToFormat(QImage::Format_ARGB32_Premultiplied);
QTest::newRow("1000x1000 -> 2000x2000") << image << QSize(2000, 2000);
QTest::newRow("1000x1000 -> 2000x1000") << image << QSize(2000, 1000);
QTest::newRow("1000x1000 -> 1000x2000") << image << QSize(1000, 2000);
QTest::newRow("1000x1000 -> 2000x500") << image << QSize(2000, 500);
QTest::newRow("1000x1000 -> 500x2000") << image << QSize(500, 2000);
QTest::newRow("1000x1000 -> 500x500") << image << QSize(500, 500);
QTest::newRow("1000x1000 -> 200x200") << image << QSize(200, 200);
}
void tst_QImageScale::scaleArgb32pm()
{
QFETCH(QImage, inputImage);
QFETCH(QSize, outputSize);
QBENCHMARK {
volatile QImage output = inputImage.scaled(outputSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
// we need the volatile and the following to make sure the compiler does not do
// anything stupid :)
(void)output;
}
}
/*
Fill a RGB32 image with "random" pixel values.
*/
QImage tst_QImageScale::generateImageRgb32(int width, int height)
{
QImage image(width, height, QImage::Format_RGB32);
for (int y = 0; y < image.height(); ++y) {
QRgb *scanline = (QRgb*)image.scanLine(y);
for (int x = 0; x < width; ++x)
scanline[x] = qRgb(x, y, x ^ y);
}
return image;
}
/*
Fill a ARGB32 image with "random" pixel values.
*/
QImage tst_QImageScale::generateImageArgb32(int width, int height)
{
QImage image(width, height, QImage::Format_ARGB32);
const int byteWidth = width * 4;
for (int y = 0; y < image.height(); ++y) {
uchar *scanline = image.scanLine(y);
for (int x = 0; x < byteWidth; ++x)
scanline[x] = x ^ y;
}
return image;
}
QTEST_MAIN(tst_QImageScale)
#include "tst_qimagescale.moc"
|
