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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QDebug>
#include <qtest.h>
#include <QTest>
#include <QFile>
#include <QByteArray>
#include <QBuffer>
#include <QImageReader>
#include <QSize>
class tst_jpeg : public QObject
{
Q_OBJECT
private slots:
void jpegDecodingQtWebkitStyle();
};
void tst_jpeg::jpegDecodingQtWebkitStyle()
{
// QtWebkit currently calls size() to get the image size for layouting purposes.
// Then when it is in the viewport (we assume that here) it actually gets decoded.
QString testFile = QFINDTESTDATA("n900.jpeg");
QVERIFY2(!testFile.isEmpty(), "cannot find test file n900.jpeg!");
QFile inputJpeg(testFile);
QVERIFY(inputJpeg.exists());
inputJpeg.open(QIODevice::ReadOnly);
QByteArray imageData = inputJpeg.readAll();
QBuffer buffer;
buffer.setData(imageData);
buffer.open(QBuffer::ReadOnly);
QCOMPARE(buffer.size(), qint64(19016));
QBENCHMARK{
for (int i = 0; i < 50; i++) {
QImageReader reader(&buffer, "jpeg");
QSize size = reader.size();
QVERIFY(!size.isNull());
QByteArray format = reader.format();
QVERIFY(!format.isEmpty());
QImage img = reader.read();
QVERIFY(!img.isNull());
buffer.reset();
}
}
}
QTEST_MAIN(tst_jpeg)
#include "jpeg.moc"
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