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A small speedup

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This commit is contained in:
Kovid Goyal 2016-05-09 17:47:41 +05:30
parent 73a872b237
commit 2a67a0698b
1 changed files with 1 additions and 2 deletions
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3
src/calibre/utils/imageops/imageops.cpp
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@ -7,7 +7,6 @@
#include <stdexcept>
#include "imageops.h"
#include <QColor>
#include <QVector>
#include <cmath>
@ -140,7 +139,7 @@ QImage grayscale(const QImage &image) { // {{{
row = reinterpret_cast<QRgb*>(img.scanLine(r));
for (pixel = row; pixel < row + width; pixel++) {
gray = qGray(*pixel);
*pixel = QColor(gray, gray, gray).rgba();
*pixel = qRgb(gray, gray, gray);
}
}
return img;