141 lines
4.9 KiB
C++
141 lines
4.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <qtest.h>
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#include <QImage>
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class tst_QImageScale : public QObject
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{
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Q_OBJECT
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private slots:
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void scaleRgb32_data();
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void scaleRgb32();
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void scaleArgb32pm_data();
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void scaleArgb32pm();
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private:
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QImage generateImageRgb32(int width, int height);
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QImage generateImageArgb32(int width, int height);
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};
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void tst_QImageScale::scaleRgb32_data()
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{
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QTest::addColumn<QImage>("inputImage");
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QTest::addColumn<QSize>("outputSize");
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QImage image = generateImageRgb32(1000, 1000);
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QTest::newRow("1000x1000 -> 2000x2000") << image << QSize(2000, 2000);
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QTest::newRow("1000x1000 -> 2000x1000") << image << QSize(2000, 1000);
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QTest::newRow("1000x1000 -> 1000x2000") << image << QSize(1000, 2000);
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QTest::newRow("1000x1000 -> 2000x500") << image << QSize(2000, 500);
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QTest::newRow("1000x1000 -> 500x2000") << image << QSize(500, 2000);
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QTest::newRow("1000x1000 -> 500x500") << image << QSize(500, 500);
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QTest::newRow("1000x1000 -> 200x200") << image << QSize(200, 200);
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}
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void tst_QImageScale::scaleRgb32()
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{
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QFETCH(QImage, inputImage);
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QFETCH(QSize, outputSize);
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QBENCHMARK {
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volatile QImage output = inputImage.scaled(outputSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
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// we need the volatile and the following to make sure the compiler does not do
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// anything stupid :)
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(void)output;
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}
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}
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void tst_QImageScale::scaleArgb32pm_data()
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{
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QTest::addColumn<QImage>("inputImage");
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QTest::addColumn<QSize>("outputSize");
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QImage image = generateImageArgb32(1000, 1000).convertToFormat(QImage::Format_ARGB32_Premultiplied);
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QTest::newRow("1000x1000 -> 2000x2000") << image << QSize(2000, 2000);
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QTest::newRow("1000x1000 -> 2000x1000") << image << QSize(2000, 1000);
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QTest::newRow("1000x1000 -> 1000x2000") << image << QSize(1000, 2000);
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QTest::newRow("1000x1000 -> 2000x500") << image << QSize(2000, 500);
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QTest::newRow("1000x1000 -> 500x2000") << image << QSize(500, 2000);
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QTest::newRow("1000x1000 -> 500x500") << image << QSize(500, 500);
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QTest::newRow("1000x1000 -> 200x200") << image << QSize(200, 200);
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}
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void tst_QImageScale::scaleArgb32pm()
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{
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QFETCH(QImage, inputImage);
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QFETCH(QSize, outputSize);
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QBENCHMARK {
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volatile QImage output = inputImage.scaled(outputSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
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// we need the volatile and the following to make sure the compiler does not do
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// anything stupid :)
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(void)output;
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}
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}
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/*
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Fill a RGB32 image with "random" pixel values.
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*/
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QImage tst_QImageScale::generateImageRgb32(int width, int height)
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{
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QImage image(width, height, QImage::Format_RGB32);
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for (int y = 0; y < image.height(); ++y) {
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QRgb *scanline = (QRgb*)image.scanLine(y);
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for (int x = 0; x < width; ++x)
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scanline[x] = qRgb(x, y, x ^ y);
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}
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return image;
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}
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/*
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Fill a ARGB32 image with "random" pixel values.
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*/
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QImage tst_QImageScale::generateImageArgb32(int width, int height)
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{
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QImage image(width, height, QImage::Format_ARGB32);
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const int byteWidth = width * 4;
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for (int y = 0; y < image.height(); ++y) {
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uchar *scanline = image.scanLine(y);
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for (int x = 0; x < byteWidth; ++x)
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scanline[x] = x ^ y;
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}
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return image;
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}
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QTEST_MAIN(tst_QImageScale)
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#include "tst_qimagescale.moc"
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