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/* This file is part of the KDE libraries
Copyright (C) 2004 Brad Hards <bradh@frogmouth.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "exrcreator.h"
#include <QImage>
#include <QDebug>
#include <QFile>
#include <ImfInputFile.h>
#include <ImfPreviewImage.h>
#include <ksharedconfig.h>
#include <kconfiggroup.h>
extern "C"
{
Q_DECL_EXPORT ThumbCreator *new_creator()
{
return new EXRCreator;
}
}
bool EXRCreator::create(const QString &path, int, int, QImage &img)
{
Imf::InputFile in ( QFile::encodeName( path ) );
const Imf::Header &h = in.header();
if ( h.hasPreviewImage() ) {
qDebug() << "EXRcreator - using preview";
const Imf::PreviewImage &preview = in.header().previewImage();
QImage qpreview(preview.width(), preview.height(), QImage::Format_RGB32);
for ( unsigned int y=0; y < preview.height(); y++ ) {
for ( unsigned int x=0; x < preview.width(); x++ ) {
const Imf::PreviewRgba &q = preview.pixels()[x+(y*preview.width())];
qpreview.setPixel( x, y, qRgba(q.r, q.g, q.b, q.a) );
}
}
img = qpreview;
return true;
} else {
// do it the hard way
// We ignore maximum size when just extracting the thumnail
// from the header, but it is very expensive to render large
// EXR images just to turn it into an icon, so we go back
// to honoring it in here.
qDebug() << "EXRcreator - using original image";
KSharedConfig::Ptr config = KSharedConfig::openConfig();
KConfigGroup configGroup( config, "PreviewSettings" );
unsigned long long maxSize = configGroup.readEntry( "MaximumSize", 1024*1024 /* 1MB */ );
unsigned long long fileSize = QFile( path ).size();
if ( (fileSize > 0) && (fileSize < maxSize) ) {
if (!img.load( path )) {
return false;
}
if (img.depth() != 32)
img = img.convertToFormat( QImage::Format_RGB32 );
return true;
} else {
return false;
}
}
}
ThumbCreator::Flags EXRCreator::flags() const
{
return None;
}
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