119 lines
3.0 KiB
C++
119 lines
3.0 KiB
C++
// vim: set tabstop=4 shiftwidth=4 expandtab:
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/*
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Gwenview: an image viewer
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Copyright 2007 Aurélien Gâteau <agateau@kde.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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// Self
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#include "exiv2imageloader.h"
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// Qt
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#include <QByteArray>
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#include <QFile>
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#include <QString>
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// KF
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// Exiv2
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#include <exiv2/exiv2.hpp>
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// Local
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#include "gwenview_exiv2_debug.h"
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namespace Gwenview
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{
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struct Exiv2ImageLoaderPrivate {
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std::unique_ptr<Exiv2::Image> mImage;
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QString mErrorMessage;
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};
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struct Exiv2LogHandler {
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static void handleMessage(int level, const char *message)
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{
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switch (level) {
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case Exiv2::LogMsg::debug:
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qCDebug(GWENVIEW_EXIV2_LOG) << message;
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break;
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case Exiv2::LogMsg::info:
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qCInfo(GWENVIEW_EXIV2_LOG) << message;
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break;
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case Exiv2::LogMsg::warn:
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case Exiv2::LogMsg::error:
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case Exiv2::LogMsg::mute:
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qCWarning(GWENVIEW_EXIV2_LOG) << message;
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break;
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default:
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qCWarning(GWENVIEW_EXIV2_LOG) << "unhandled log level" << level << message;
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break;
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}
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}
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Exiv2LogHandler()
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{
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Exiv2::LogMsg::setHandler(&Exiv2LogHandler::handleMessage);
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}
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};
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Exiv2ImageLoader::Exiv2ImageLoader()
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: d(new Exiv2ImageLoaderPrivate)
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{
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// This is a threadsafe way to ensure that we only register it once
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static Exiv2LogHandler handler;
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}
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Exiv2ImageLoader::~Exiv2ImageLoader()
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{
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delete d;
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}
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bool Exiv2ImageLoader::load(const QString &filePath)
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{
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QByteArray filePathByteArray = QFile::encodeName(filePath);
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try {
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d->mImage.reset(Exiv2::ImageFactory::open(filePathByteArray.constData()).release());
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d->mImage->readMetadata();
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} catch (const Exiv2::Error &error) {
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d->mErrorMessage = QString::fromUtf8(error.what());
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return false;
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}
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return true;
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}
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bool Exiv2ImageLoader::load(const QByteArray &data)
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{
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try {
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d->mImage.reset(Exiv2::ImageFactory::open((unsigned char *)data.constData(), data.size()).release());
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d->mImage->readMetadata();
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} catch (const Exiv2::Error &error) {
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d->mErrorMessage = QString::fromUtf8(error.what());
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return false;
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}
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return true;
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}
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QString Exiv2ImageLoader::errorMessage() const
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{
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return d->mErrorMessage;
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}
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std::unique_ptr<Exiv2::Image> Exiv2ImageLoader::popImage()
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{
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return std::move(d->mImage);
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}
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} // namespace
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