mirror of
https://github.com/crystalidea/qt6windows7.git
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111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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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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