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/*
* Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
*
* 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 program 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 program; 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 "config.h"
#include "QtX11ImageConversion.h"
namespace WebCore {
QImage qimageFromXImage(XImage* xi)
{
QImage::Format format = QImage::Format_ARGB32_Premultiplied;
if (xi->depth == 24)
format = QImage::Format_RGB32;
else if (xi->depth == 16)
format = QImage::Format_RGB16;
QImage image = QImage(reinterpret_cast<uchar*>(xi->data), xi->width, xi->height, xi->bytes_per_line, format).copy();
// we may have to swap the byte order
if ((QSysInfo::ByteOrder == QSysInfo::LittleEndian && xi->byte_order == MSBFirst)
|| (QSysInfo::ByteOrder == QSysInfo::BigEndian && xi->byte_order == LSBFirst)) {
for (int i = 0; i < image.height(); i++) {
if (xi->depth == 16) {
ushort* p = reinterpret_cast<ushort*>(image.scanLine(i));
ushort* end = p + image.width();
while (p < end) {
*p = ((*p << 8) & 0xff00) | ((*p >> 8) & 0x00ff);
p++;
}
} else {
uint* p = reinterpret_cast<uint*>(image.scanLine(i));
uint* end = p + image.width();
while (p < end) {
*p = ((*p << 24) & 0xff000000) | ((*p << 8) & 0x00ff0000)
| ((*p >> 8) & 0x0000ff00) | ((*p >> 24) & 0x000000ff);
p++;
}
}
}
}
// fix-up alpha channel
if (format == QImage::Format_RGB32) {
QRgb* p = reinterpret_cast<QRgb*>(image.bits());
for (int y = 0; y < xi->height; ++y) {
for (int x = 0; x < xi->width; ++x)
p[x] |= 0xff000000;
p += xi->bytes_per_line / 4;
}
}
return image;
}
} // namespace WebKit
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