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vng4 demosaic: minor speedup, #4633

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This commit is contained in:
heckflosse
2018-10-26 22:20:20 +02:00
parent 3d61eca91f
commit 1b291aee9b
1 changed files with 20 additions and 26 deletions
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46
rtengine/vng4_demosaic_RT.cc
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@@ -210,9 +210,7 @@ void RawImageSource::vng4_demosaic (const array2D<float> &rawData, array2D<float
#pragma omp parallel
#endif
{
float gval[8], thold, sum[3];
int g;
const int progressStep = 64;
constexpr int progressStep = 64;
const double progressInc = (0.98 - progress) / ((height - 2) / progressStep);
int firstRow = -1;
int lastRow = -1;
@@ -233,10 +231,11 @@ void RawImageSource::vng4_demosaic (const array2D<float> &rawData, array2D<float
green[row][col] = pix[color];
} else {
int * ip = code[row & prow][col & pcol];
memset (gval, 0, sizeof gval);
float gval[8] = {};
int g;
while ((g = ip[0]) != INT_MAX) { /* Calculate gradients */
const float diff = fabsf(pix[g] - pix[ip[1]]) * ip[2];
const float diff = std::fabs(pix[g] - pix[ip[1]]) * ip[2];
gval[ip[3]] += diff;
ip += 4;
@@ -246,24 +245,17 @@ void RawImageSource::vng4_demosaic (const array2D<float> &rawData, array2D<float
}
ip++;
{
float gmin, gmax;
gmin = gmax = gval[0]; /* Choose a threshold */
for (g = 1; g < 8; g++) {
gmin = std::min(gmin, gval[g]);
gmax = std::max(gmax, gval[g]);
}
const float thold = rtengine::min(gval[0], gval[1], gval[2], gval[3], gval[4], gval[5], gval[6], gval[7])
+ rtengine::max(gval[0], gval[1], gval[2], gval[3], gval[4], gval[5], gval[6], gval[7]) / 2;
thold = gmin + (gmax / 2);
}
memset (sum, 0, sizeof sum);
float sum[3] = {};
float t1p2 = pix[color];
if(color & 1) {
int num = 0;
for (g = 0; g < 8; g++, ip += 2) { /* Average the neighbors */
for (int g = 0; g < 8; g++, ip += 2) { /* Average the neighbors */
if (gval[g] <= thold) {
if(ip[1]) {
sum[0] += (t1p2 + pix[ip[1]]) * 0.5f;
@@ -278,7 +270,7 @@ void RawImageSource::vng4_demosaic (const array2D<float> &rawData, array2D<float
} else {
int num = 0;
for (g = 0; g < 8; g++, ip += 2) { /* Average the neighbors */
for (int g = 0; g < 8; g++, ip += 2) { /* Average the neighbors */
if (gval[g] <= thold) {
sum[1] += pix[ip[0] + 1];
sum[2] += pix[ip[0] + 3];
@@ -298,7 +290,7 @@ void RawImageSource::vng4_demosaic (const array2D<float> &rawData, array2D<float
}
}
if (row - 1 > firstRow) {
interpolate_row_rb_mul_pp (rawData, red[row - 1], blue[row - 1], green[row - 2], green[row - 1], green[row], row - 1, 1.0, 1.0, 1.0, 0, W, 1);
interpolate_row_rb_mul_pp(rawData, red[row - 1], blue[row - 1], green[row - 2], green[row - 1], green[row], row - 1, 1.0, 1.0, 1.0, 0, W, 1);
}
if(plistenerActive) {
@@ -314,22 +306,24 @@ void RawImageSource::vng4_demosaic (const array2D<float> &rawData, array2D<float
}
if (firstRow > 2 && firstRow < H - 3) {
interpolate_row_rb_mul_pp (rawData, red[firstRow], blue[firstRow], green[firstRow - 1], green[firstRow], green[firstRow + 1], firstRow, 1.0, 1.0, 1.0, 0, W, 1);
interpolate_row_rb_mul_pp(rawData, red[firstRow], blue[firstRow], green[firstRow - 1], green[firstRow], green[firstRow + 1], firstRow, 1.0, 1.0, 1.0, 0, W, 1);
}
if (lastRow > 2 && lastRow < H - 3) {
interpolate_row_rb_mul_pp (rawData, red[lastRow], blue[lastRow], green[lastRow - 1], green[lastRow], green[lastRow + 1], lastRow, 1.0, 1.0, 1.0, 0, W, 1);
interpolate_row_rb_mul_pp(rawData, red[lastRow], blue[lastRow], green[lastRow - 1], green[lastRow], green[lastRow + 1], lastRow, 1.0, 1.0, 1.0, 0, W, 1);
}
#ifdef _OPENMP
#pragma omp single
#endif
{
// let the first thread, which is out of work, do the border interpolation
border_interpolate2(W, H, 3, rawData, red, green, blue);
}
}
free (code[0][0]);
free (image);
if(plistenerActive) {
plistener->setProgress (0.98);
}
border_interpolate2(W, H, 3, rawData, red, green, blue);
if(plistenerActive) {
plistener->setProgress (1.0);
}