878a01b2d1
Instead of allocating and reading the entire image and then scaling it down, this code reads only one line at a time and scales it on the fly. Change-Id: I61fde307146c11dcd90ca617cc2e7f85dd3b66c4 Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
532 lines
17 KiB
C++
532 lines
17 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 <QtTest/QtTest>
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#include <QDebug>
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#include <QFile>
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#include <QImage>
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#include <QImageReader>
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#include <QImageWriter>
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#include <QPainter>
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#include <QSet>
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#ifdef Q_OS_UNIX // for geteuid()
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# include <sys/types.h>
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# include <unistd.h>
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#endif
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typedef QMap<QString, QString> QStringMap;
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typedef QList<int> QIntList;
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Q_DECLARE_METATYPE(QImage)
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Q_DECLARE_METATYPE(QStringMap)
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Q_DECLARE_METATYPE(QIntList)
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Q_DECLARE_METATYPE(QImageWriter::ImageWriterError)
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Q_DECLARE_METATYPE(QIODevice *)
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Q_DECLARE_METATYPE(QImage::Format)
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class tst_QImageWriter : public QObject
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{
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Q_OBJECT
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public:
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tst_QImageWriter();
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virtual ~tst_QImageWriter();
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public slots:
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void init();
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void initTestCase();
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void cleanup();
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private slots:
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void getSetCheck();
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void writeImage_data();
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void writeImage();
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void writeImage2_data();
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void writeImage2();
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void supportedFormats();
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void writeToInvalidDevice();
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void supportsOption_data();
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void supportsOption();
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void saveWithNoFormat_data();
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void saveWithNoFormat();
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void saveToTemporaryFile();
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private:
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QString prefix;
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};
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// helper to skip an autotest when the given image format is not supported
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#define SKIP_IF_UNSUPPORTED(format) do { \
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if (!QByteArray(format).isEmpty() && !QImageReader::supportedImageFormats().contains(format)) \
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QSKIP("\"" + QByteArray(format) + "\" images are not supported"); \
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} while (0)
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static void initializePadding(QImage *image)
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{
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int effectiveBytesPerLine = (image->width() * image->depth() + 7) / 8;
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int paddingBytes = image->bytesPerLine() - effectiveBytesPerLine;
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if (paddingBytes == 0)
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return;
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for (int y = 0; y < image->height(); ++y) {
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memset(image->scanLine(y) + effectiveBytesPerLine, 0, paddingBytes);
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}
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}
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void tst_QImageWriter::initTestCase()
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{
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prefix = QFINDTESTDATA("images/");
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if (prefix.isEmpty())
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QFAIL("Can't find images directory!");
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}
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// Testing get/set functions
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void tst_QImageWriter::getSetCheck()
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{
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QImageWriter obj1;
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// QIODevice * QImageWriter::device()
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// void QImageWriter::setDevice(QIODevice *)
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QFile *var1 = new QFile;
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obj1.setDevice(var1);
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QCOMPARE((QIODevice *) var1, obj1.device());
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// The class should possibly handle a 0-pointer as a device, since
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// there is a default contructor, so it's "handling" a 0 device by default.
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// For example: QMovie::setDevice(0) works just fine
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obj1.setDevice((QIODevice *)0);
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QCOMPARE((QIODevice *) 0, obj1.device());
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delete var1;
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// int QImageWriter::quality()
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// void QImageWriter::setQuality(int)
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obj1.setQuality(0);
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QCOMPARE(0, obj1.quality());
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obj1.setQuality(INT_MIN);
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QCOMPARE(INT_MIN, obj1.quality());
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obj1.setQuality(INT_MAX);
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QCOMPARE(INT_MAX, obj1.quality());
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// int QImageWriter::compression()
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// void QImageWriter::setCompression(int)
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obj1.setCompression(0);
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QCOMPARE(0, obj1.compression());
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obj1.setCompression(INT_MIN);
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QCOMPARE(INT_MIN, obj1.compression());
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obj1.setCompression(INT_MAX);
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QCOMPARE(INT_MAX, obj1.compression());
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// float QImageWriter::gamma()
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// void QImageWriter::setGamma(float)
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obj1.setGamma(0.0f);
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QCOMPARE(0.0f, obj1.gamma());
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obj1.setGamma(1.1f);
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QCOMPARE(1.1f, obj1.gamma());
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}
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tst_QImageWriter::tst_QImageWriter()
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{
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}
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tst_QImageWriter::~tst_QImageWriter()
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{
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QDir dir(prefix);
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QStringList filesToDelete = dir.entryList(QStringList() << "gen-*" , QDir::NoDotAndDotDot | QDir::Files);
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foreach( QString file, filesToDelete) {
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QFile::remove(dir.absoluteFilePath(file));
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}
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}
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void tst_QImageWriter::init()
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{
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}
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void tst_QImageWriter::cleanup()
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{
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}
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void tst_QImageWriter::writeImage_data()
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{
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QTest::addColumn<QString>("fileName");
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QTest::addColumn<bool>("lossy");
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QTest::addColumn<QByteArray>("format");
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QTest::newRow("BMP: colorful") << QString("colorful.bmp") << false << QByteArray("bmp");
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QTest::newRow("BMP: font") << QString("font.bmp") << false << QByteArray("bmp");
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QTest::newRow("XPM: marble") << QString("marble.xpm") << false << QByteArray("xpm");
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QTest::newRow("PNG: kollada") << QString("kollada.png") << false << QByteArray("png");
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QTest::newRow("PPM: teapot") << QString("teapot.ppm") << false << QByteArray("ppm");
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QTest::newRow("PBM: ship63") << QString("ship63.pbm") << true << QByteArray("pbm");
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QTest::newRow("XBM: gnus") << QString("gnus.xbm") << false << QByteArray("xbm");
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QTest::newRow("JPEG: beavis") << QString("beavis.jpg") << true << QByteArray("jpeg");
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}
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void tst_QImageWriter::writeImage()
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{
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QFETCH(QString, fileName);
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QFETCH(bool, lossy);
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QFETCH(QByteArray, format);
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SKIP_IF_UNSUPPORTED(format);
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QImage image;
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{
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QImageReader reader(prefix + fileName);
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image = reader.read();
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QVERIFY2(!image.isNull(), qPrintable(reader.errorString()));
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}
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{
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QImageWriter writer(prefix + "gen-" + fileName, format);
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QVERIFY(writer.write(image));
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}
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{
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bool skip = false;
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#if defined(Q_OS_UNIX)
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if (::geteuid() == 0)
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skip = true;
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#endif
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if (!skip) {
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// Shouldn't be able to write to read-only file
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QFile sourceFile(prefix + "gen-" + fileName);
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QFile::Permissions permissions = sourceFile.permissions();
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QVERIFY(sourceFile.setPermissions(QFile::ReadOwner | QFile::ReadUser | QFile::ReadGroup | QFile::ReadOther));
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QImageWriter writer(prefix + "gen-" + fileName, format);
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QVERIFY(!writer.write(image));
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QVERIFY(sourceFile.setPermissions(permissions));
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}
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}
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QImage image2;
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{
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QImageReader reader(prefix + "gen-" + fileName);
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image2 = reader.read();
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QVERIFY(!image2.isNull());
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}
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if (!lossy) {
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QCOMPARE(image, image2);
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} else {
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QCOMPARE(image.format(), image2.format());
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QCOMPARE(image.depth(), image2.depth());
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}
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}
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void tst_QImageWriter::writeImage2_data()
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{
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QTest::addColumn<QString>("fileName");
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QTest::addColumn<QByteArray>("format");
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QTest::addColumn<QImage>("image");
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const QStringList formats = QStringList() << "bmp" << "xpm" << "png"
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<< "ppm"; //<< "jpeg";
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QImage image0(70, 70, QImage::Format_ARGB32);
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image0.fill(QColor(Qt::red).rgb());
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QImage::Format imgFormat = QImage::Format_Mono;
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while (imgFormat != QImage::NImageFormats) {
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QImage image = image0.convertToFormat(imgFormat);
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initializePadding(&image);
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foreach (const QString format, formats) {
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const QString fileName = QString("solidcolor_%1.%2").arg(imgFormat)
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.arg(format);
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QTest::newRow(fileName.toLatin1()) << fileName
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<< format.toLatin1()
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<< image;
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}
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imgFormat = QImage::Format(int(imgFormat) + 1);
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}
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}
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/*
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Workaround for the equality operator for indexed formats
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(which fails if the colortables are different).
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Images must have the same format and size.
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*/
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static bool equalImageContents(const QImage &image1, const QImage &image2)
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{
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switch (image1.format()) {
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case QImage::Format_Mono:
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case QImage::Format_Indexed8:
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for (int y = 0; y < image1.height(); ++y)
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for (int x = 0; x < image1.width(); ++x)
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if (image1.pixel(x, y) != image2.pixel(x, y))
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return false;
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return true;
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default:
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return (image1 == image2);
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}
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}
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void tst_QImageWriter::writeImage2()
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{
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QFETCH(QString, fileName);
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QFETCH(QByteArray, format);
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QFETCH(QImage, image);
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//we reduce the scope of writer so that it closes the associated file
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// and QFile::remove can actually work
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{
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QImageWriter writer(fileName, format);
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QVERIFY(writer.write(image));
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}
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QImage written;
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//we reduce the scope of reader so that it closes the associated file
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// and QFile::remove can actually work
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{
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QImageReader reader(fileName, format);
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QVERIFY(reader.read(&written));
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}
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written = written.convertToFormat(image.format());
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if (!equalImageContents(written, image)) {
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qDebug() << "image" << image.format() << image.width()
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<< image.height() << image.depth()
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<< hex << image.pixel(0, 0);
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qDebug() << "written" << written.format() << written.width()
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<< written.height() << written.depth()
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<< hex << written.pixel(0, 0);
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}
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QVERIFY(equalImageContents(written, image));
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QVERIFY(QFile::remove(fileName));
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}
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void tst_QImageWriter::supportedFormats()
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{
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QList<QByteArray> formats = QImageWriter::supportedImageFormats();
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QList<QByteArray> sortedFormats = formats;
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qSort(sortedFormats);
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// check that the list is sorted
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QCOMPARE(formats, sortedFormats);
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QSet<QByteArray> formatSet;
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foreach (QByteArray format, formats)
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formatSet << format;
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// check that the list does not contain duplicates
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QCOMPARE(formatSet.size(), formats.size());
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}
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void tst_QImageWriter::writeToInvalidDevice()
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{
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QLatin1String fileName("/these/directories/do/not/exist/001.png");
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{
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QImageWriter writer(fileName);
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QVERIFY(!writer.canWrite());
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QCOMPARE(writer.error(), QImageWriter::DeviceError);
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}
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{
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QImageWriter writer(fileName);
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writer.setFormat("png");
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QVERIFY(!writer.canWrite());
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QCOMPARE(writer.error(), QImageWriter::DeviceError);
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}
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{
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QImageWriter writer(fileName);
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QImage im(10, 10, QImage::Format_ARGB32);
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QVERIFY(!writer.write(im));
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QCOMPARE(writer.error(), QImageWriter::DeviceError);
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}
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{
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QImageWriter writer(fileName);
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writer.setFormat("png");
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QImage im(10, 10, QImage::Format_ARGB32);
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QVERIFY(!writer.write(im));
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QCOMPARE(writer.error(), QImageWriter::DeviceError);
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}
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}
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void tst_QImageWriter::supportsOption_data()
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{
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QTest::addColumn<QString>("fileName");
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QTest::addColumn<QIntList>("options");
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QTest::newRow("png") << QString("gen-black.png")
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<< (QIntList() << QImageIOHandler::Gamma
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<< QImageIOHandler::Description
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<< QImageIOHandler::Quality
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<< QImageIOHandler::Size
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<< QImageIOHandler::ScaledSize);
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}
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void tst_QImageWriter::supportsOption()
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{
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SKIP_IF_UNSUPPORTED(QTest::currentDataTag());
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QFETCH(QString, fileName);
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QFETCH(QIntList, options);
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QSet<QImageIOHandler::ImageOption> allOptions;
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allOptions << QImageIOHandler::Size
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<< QImageIOHandler::ClipRect
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<< QImageIOHandler::Description
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<< QImageIOHandler::ScaledClipRect
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<< QImageIOHandler::ScaledSize
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<< QImageIOHandler::CompressionRatio
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<< QImageIOHandler::Gamma
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<< QImageIOHandler::Quality
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<< QImageIOHandler::Name
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<< QImageIOHandler::SubType
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<< QImageIOHandler::IncrementalReading
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<< QImageIOHandler::Endianness
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<< QImageIOHandler::Animation
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<< QImageIOHandler::BackgroundColor;
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QImageWriter writer(prefix + fileName);
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for (int i = 0; i < options.size(); ++i) {
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QVERIFY(writer.supportsOption(QImageIOHandler::ImageOption(options.at(i))));
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allOptions.remove(QImageIOHandler::ImageOption(options.at(i)));
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}
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foreach (QImageIOHandler::ImageOption option, allOptions)
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QVERIFY(!writer.supportsOption(option));
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}
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void tst_QImageWriter::saveWithNoFormat_data()
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{
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QTest::addColumn<QString>("fileName");
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QTest::addColumn<QByteArray>("format");
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QTest::addColumn<QImageWriter::ImageWriterError>("error");
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QTest::newRow("garble") << prefix + QString("gen-out.garble") << QByteArray("jpeg") << QImageWriter::UnsupportedFormatError;
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QTest::newRow("bmp") << prefix + QString("gen-out.bmp") << QByteArray("bmp") << QImageWriter::ImageWriterError(0);
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QTest::newRow("xbm") << prefix + QString("gen-out.xbm") << QByteArray("xbm") << QImageWriter::ImageWriterError(0);
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QTest::newRow("xpm") << prefix + QString("gen-out.xpm") << QByteArray("xpm") << QImageWriter::ImageWriterError(0);
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QTest::newRow("png") << prefix + QString("gen-out.png") << QByteArray("png") << QImageWriter::ImageWriterError(0);
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QTest::newRow("ppm") << prefix + QString("gen-out.ppm") << QByteArray("ppm") << QImageWriter::ImageWriterError(0);
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QTest::newRow("pbm") << prefix + QString("gen-out.pbm") << QByteArray("pbm") << QImageWriter::ImageWriterError(0);
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}
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void tst_QImageWriter::saveWithNoFormat()
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{
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QFETCH(QString, fileName);
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QFETCH(QByteArray, format);
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QFETCH(QImageWriter::ImageWriterError, error);
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SKIP_IF_UNSUPPORTED(format);
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QImage niceImage(64, 64, QImage::Format_ARGB32);
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memset(niceImage.bits(), 0, niceImage.byteCount());
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QImageWriter writer(fileName /* , 0 - no format! */);
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if (error != 0) {
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QVERIFY(!writer.write(niceImage));
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QCOMPARE(writer.error(), error);
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return;
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}
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QVERIFY2(writer.write(niceImage), qPrintable(writer.errorString()));
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QImageReader reader(fileName);
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QCOMPARE(reader.format(), format);
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QVERIFY(reader.canRead());
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QImage outImage = reader.read();
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QVERIFY2(!outImage.isNull(), qPrintable(reader.errorString()));
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}
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void tst_QImageWriter::saveToTemporaryFile()
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{
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QImage image(prefix + "kollada.png");
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QVERIFY(!image.isNull());
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{
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// 1) Via QImageWriter's API, with a standard temp file name
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QTemporaryFile file;
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QVERIFY(file.open());
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QImageWriter writer(&file, "PNG");
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if (writer.canWrite())
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QVERIFY(writer.write(image));
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else
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qWarning() << file.errorString();
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#if defined(Q_OS_WINCE)
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file.reset();
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#endif
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QCOMPARE(QImage(writer.fileName()), image);
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}
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{
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// 2) Via QImage's API, with a standard temp file name
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QTemporaryFile file;
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QVERIFY(file.open());
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QVERIFY(image.save(&file, "PNG"));
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file.reset();
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QImage tmp;
|
|
QVERIFY(tmp.load(&file, "PNG"));
|
|
QCOMPARE(tmp, image);
|
|
}
|
|
{
|
|
// 3) Via QImageWriter's API, with a named temp file
|
|
QTemporaryFile file("tempXXXXXX");
|
|
QVERIFY(file.open());
|
|
QImageWriter writer(&file, "PNG");
|
|
QVERIFY(writer.write(image));
|
|
#if defined(Q_OS_WINCE)
|
|
file.reset();
|
|
#endif
|
|
QCOMPARE(QImage(writer.fileName()), image);
|
|
}
|
|
{
|
|
// 4) Via QImage's API, with a named temp file
|
|
QTemporaryFile file("tempXXXXXX");
|
|
QVERIFY(file.open());
|
|
QVERIFY(image.save(&file, "PNG"));
|
|
file.reset();
|
|
QImage tmp;
|
|
QVERIFY(tmp.load(&file, "PNG"));
|
|
QCOMPARE(tmp, image);
|
|
}
|
|
}
|
|
|
|
QTEST_MAIN(tst_QImageWriter)
|
|
#include "tst_qimagewriter.moc"
|