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88 lines
3 KiB
C++
88 lines
3 KiB
C++
/* This file is part of the KDE libraries
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Copyright (C) 2004 Brad Hards <bradh@frogmouth.net>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "exrcreator.h"
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#include "thumbnail.h"
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#include <QImage>
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#include <QFile>
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#include <kdebug.h>
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#include <ksharedconfig.h>
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#include <kglobal.h>
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#include <kconfiggroup.h>
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#include <kdemacros.h>
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#include <ImfInputFile.h>
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#include <ImfPreviewImage.h>
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#include <ImfHeader.h>
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extern "C"
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{
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KDE_EXPORT ThumbCreator *new_creator()
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{
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return new EXRCreator;
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}
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}
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bool EXRCreator::create(const QString &path, int, int, QImage &img)
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{
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Imf::InputFile in (path.toAscii());
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const Imf::Header &h = in.header();
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if (h.hasPreviewImage()) {
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kDebug() << "EXRcreator - using preview";
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const Imf::PreviewImage &preview = in.header().previewImage();
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QImage qpreview(preview.width(), preview.height(), QImage::Format_RGB32);
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for (unsigned int y = 0; y < preview.height(); y++ ) {
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for (unsigned int x=0; x < preview.width(); x++) {
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const Imf::PreviewRgba &q = preview.pixels()[x+(y*preview.width())];
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qpreview.setPixel(x, y, qRgba(q.r, q.g, q.b, q.a));
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}
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}
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img = qpreview;
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return true;
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} else {
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// do it the hard way
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// We ignore maximum size when just extracting the thumnail
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// from the header, but it is very expensive to render large
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// EXR images just to turn it into an icon, so we go back
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// to honoring it in here.
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kDebug() << "EXRcreator - using original image";
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KSharedConfig::Ptr config = KGlobal::config();
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KConfigGroup configGroup(config, "PreviewSettings");
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unsigned long long maxSize = configGroup.readEntry("MaximumSize", MaxPreviewSizes::MaxLocalSize * 1024 * 1024);
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unsigned long long fileSize = QFile(path).size();
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if ((fileSize > 0) && (fileSize < maxSize)) {
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if (!img.load(path)) {
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return false;
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}
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if (img.depth() != 32)
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img = img.convertToFormat(QImage::Format_RGB32);
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return true;
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}
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kDebug() << "EXRcreator - image file size too large" << fileSize << maxSize;
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return false;
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}
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}
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ThumbCreator::Flags EXRCreator::flags() const
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{
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return None;
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}
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