5635823e17
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I311e001373776812699d6efc045b5f742890c689 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
109 lines
3.5 KiB
C++
109 lines
3.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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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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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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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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Q_DECLARE_METATYPE(QImage)
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class tst_QImageConversion : public QObject
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{
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Q_OBJECT
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private slots:
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void convertRgb888ToRGB32_data();
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void convertRgb888ToRGB32();
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private:
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QImage generateImageRgb888(int width, int height);
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};
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void tst_QImageConversion::convertRgb888ToRGB32_data()
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{
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QTest::addColumn<QImage>("inputImage");
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// height = 5000 to get interesting timing.
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// 3 pixels wide -> smaller than regular vector of 128bits
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QTest::newRow("width: 3px; height: 5000px;") << generateImageRgb888(3, 5000);
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// 8 pixels wide -> potential for 2 vectors
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QTest::newRow("width: 8px; height: 5000px;") << generateImageRgb888(3, 5000);
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// 16 pixels, minimum for the SSSE3 implementation
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QTest::newRow("width: 16px; height: 5000px;") << generateImageRgb888(16, 5000);
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// 50 pixels, more realistic use case
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QTest::newRow("width: 50px; height: 5000px;") << generateImageRgb888(50, 5000);
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// 2000 pixels -> typical values for pictures
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QTest::newRow("width: 2000px; height: 5000px;") << generateImageRgb888(2000, 5000);
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}
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void tst_QImageConversion::convertRgb888ToRGB32()
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{
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QFETCH(QImage, inputImage);
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QBENCHMARK {
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volatile QImage output = inputImage.convertToFormat(QImage::Format_RGB32);
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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 RGB888 image with "random" pixel values.
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*/
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QImage tst_QImageConversion::generateImageRgb888(int width, int height)
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{
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QImage image(width, height, QImage::Format_RGB888);
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const int byteWidth = width * 3;
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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_QImageConversion)
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#include "tst_qimageconversion.moc"
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