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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite 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 <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"
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