QtX11ImageConversion.cpp [plain text]
#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();
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++;
}
}
}
}
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;
}
}