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Viewing changes to tests/manual/imageloadbench.cpp

  • Committer: Package Import Robot
  • Author(s): Jonathan Riddell
  • Date: 2011-12-15 14:17:54 UTC
  • mto: This revision was merged to the branch mainline in revision 12.
  • Revision ID: package-import@ubuntu.com-20111215141754-z043hyx69dulbggf
Tags: upstream-4.7.90
Import upstream version 4.7.90

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tests/manual/imageloadbench.cpp
 
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#include <QBuffer>
 
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#include <QCoreApplication>
 
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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 <QTime>
 
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#include <lib/imageformats/imageformats.h>
 
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const int ITERATIONS = 2;
 
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const QSize SCALED_SIZE(1280, 800);
 
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static void bench(QIODevice* device, const QString& outputName)
 
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{
 
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    QTime chrono;
 
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    chrono.start();
 
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    for (int iteration = 0; iteration < ITERATIONS; ++iteration) {
 
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        qDebug() << "Iteration:" << iteration;
 
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        device->open(QIODevice::ReadOnly);
 
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        QImageReader reader(device);
 
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        QSize size = reader.size();
 
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        size.scale(SCALED_SIZE, Qt::KeepAspectRatio);
 
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        reader.setScaledSize(size);
 
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        QImage img = reader.read();
 
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        device->close();
 
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        if (iteration == ITERATIONS - 1) {
 
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            qDebug() << "time:" << chrono.elapsed();
 
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            img.save(outputName, "png");
 
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        }
 
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    }
 
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}
 
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int main(int argc, char** argv)
 
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{
 
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    QCoreApplication app(argc, argv);
 
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    if (argc != 2) {
 
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        qDebug() << "Usage: imageloadbench <file.jpg>";
 
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        return 1;
 
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    }
 
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    QString fileName = QString::fromUtf8(argv[1]);
 
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    QFile file(fileName);
 
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    if (!file.open(QIODevice::ReadOnly)) {
 
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        qDebug() << QString("Could not open '%1'").arg(fileName);
 
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        return 2;
 
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    }
 
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    QByteArray data = file.readAll();
 
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    QBuffer buffer(&data);
 
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    qDebug() << "Using Qt loader";
 
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    bench(&buffer, "qt.png");
 
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    Gwenview::ImageFormats::registerPlugins();
 
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    qDebug() << "Using Gwenview loader";
 
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    bench(&buffer, "gv.png");
 
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    return 0;
 
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}