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Viewing changes to tests/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/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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        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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        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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}