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Speed boost in the median vectors fill via loop unrolling

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rom9
2019-06-12 22:11:34 +02:00
parent 8d0755eddc
commit c819cb63a2
1 changed files with 18 additions and 6 deletions
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24
rtengine/filmnegativeproc.cc
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@@ -150,16 +150,28 @@ void RawImageSource::filmNegativeProcess(const procparams::FilmNegativeParams &p
// Chose an odd step, not multiple of the CFA size, to get a chance to visit each channel.
if(ri->getSensorType() == ST_BAYER) {
for (int row = 0; row < H; row+=5) {
for (int col = 0; col < W; col+=5) {
int c = FC(row, col); // three colors, 0=R, 1=G, 2=B
cvs[c].push_back(rawData[row][col]);
int col = 0;
int c0 = FC(row, col);
int c1 = FC(row, col + 5);
for (; col < W - 5; col+=10) {
cvs[c0].push_back(rawData[row][col]);
cvs[c1].push_back(rawData[row][col + 5]);
}
if (col < W) {
cvs[c0].push_back(rawData[row][col]);
}
}
} else if(ri->getSensorType() == ST_FUJI_XTRANS) {
for (int row = 0; row < H; row+=5) {
for (int col = 0; col < W; col+=5) {
int c = ri->XTRANSFC(row, col); // three colors, 0=R, 1=G, 2=B
cvs[c].push_back(rawData[row][col]);
int col = 0;
const unsigned int cs[6] = {ri->XTRANSFC(row, 0), ri->XTRANSFC(row, 5), ri->XTRANSFC(row, 10), ri->XTRANSFC(row, 15), ri->XTRANSFC(row, 20), ri->XTRANSFC(row, 25)};
for (; col < W - 25; col += 30) {
for (int c = 0; c < 6; ++c) {
cvs[cs[c]].push_back(rawData[row][col + c * 5]);
}
}
for (int c = 0; col < W; col += 5, ++c) {
cvs[cs[c]].push_back(rawData[row][col]);
}
}
}