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use faster implementation to clip float to [0;65535] and round in rtengine::lab2rgb16b and rtengine::lab2rgb16

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This commit is contained in:
heckflosse
2016-09-21 00:24:44 +02:00
parent c67b986744
commit f17011cec4
1 changed files with 28 additions and 17 deletions
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45
rtengine/iplab2rgb.cc
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@@ -26,6 +26,19 @@
#include "curves.h"
#include "alignedbuffer.h"
#include "color.h"
#define BENCHMARK
#include "StopWatch.h"
namespace
{
int float2intx(float d)
{
d += 12582912.f;
return reinterpret_cast<int&>(d);
}
}
namespace rtengine
{
@@ -241,8 +254,7 @@ Image8* ImProcFunctions::lab2rgb (LabImage* lab, int cx, int cy, int cw, int ch,
// for default (not gamma)
Image16* ImProcFunctions::lab2rgb16 (LabImage* lab, int cx, int cy, int cw, int ch, Glib::ustring profile, RenderingIntent intent, bool bw)
{
//gamutmap(lab);
BENCHFUN
if (cx < 0) {
cx = 0;
@@ -279,7 +291,7 @@ Image16* ImProcFunctions::lab2rgb16 (LabImage* lab, int cx, int cy, int cw, int
for (int j = cx; j < cx + cw; j++) {
float fy = (0.0086206897f * rL[j]) / 327.68f + 0.1379310345f; // (L+16)/116
float fx = (0.002 * ra[j]) / 327.68f + fy;
float fx = (0.002f * ra[j]) / 327.68f + fy;
float fz = fy - (0.005f * rb[j]) / 327.68f;
float LL = rL[j] / 327.68f;
@@ -288,15 +300,14 @@ Image16* ImProcFunctions::lab2rgb16 (LabImage* lab, int cx, int cy, int cw, int
float z_ = 65535.0f * (float) Color::f2xyz(fz) * Color::D50z;
float y_ = (LL > Color::epskap) ? 65535.0f * fy * fy * fy : 65535.0f * LL / Color::kappa;
xa[j - cx] = CLIP((int) round(x_));
ya[j - cx] = CLIP((int) round(y_));
za[j - cx] = CLIP((int) round(z_));
xa[j - cx] = float2uint16range(x_);
ya[j - cx] = float2uint16range(y_);
za[j - cx] = float2uint16range(z_);
if(bw && y_ < 65535.f ) { //force Bw value and take highlight into account
xa[j - cx] = (int) round(y_ * Color::D50x );
za[j - cx] = (int) round(y_ * Color::D50z);
xa[j - cx] = float2uint16range(y_ * Color::D50x);
za[j - cx] = float2uint16range(y_ * Color::D50z);
}
}
}
@@ -345,7 +356,7 @@ Image16* ImProcFunctions::lab2rgb16 (LabImage* lab, int cx, int cy, int cw, int
// for gamma options (BT709...sRGB linear...)
Image16* ImProcFunctions::lab2rgb16b (LabImage* lab, int cx, int cy, int cw, int ch, Glib::ustring profile, RenderingIntent intent, Glib::ustring profi, Glib::ustring gam, bool freegamma, double gampos, double slpos, double &ga0, double &ga1, double &ga2, double &ga3, double &ga4, double &ga5, double &ga6, bool bw)
{
BENCHFUN
//gamutmap(lab);
if (cx < 0) {
@@ -539,7 +550,7 @@ Image16* ImProcFunctions::lab2rgb16b (LabImage* lab, int cx, int cy, int cw, int
// 7 parameters for smoother curves
cmsWhitePointFromTemp(&xyD, t50);
GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildParametricToneCurve(NULL, 5, Parameters);//5 = more smoother than 4
cmsHPROFILE oprofdef = cmsCreateRGBProfileTHR(NULL, &xyD, &Primaries, GammaTRC); //oprofdef become Outputprofile
cmsHPROFILE oprofdef = cmsCreateRGBProfileTHR(NULL, &xyD, &Primaries, GammaTRC); //oprofdef becomes Outputprofile
cmsFreeToneCurve(GammaTRC[0]);
@@ -567,13 +578,13 @@ Image16* ImProcFunctions::lab2rgb16b (LabImage* lab, int cx, int cy, int cw, int
float z_ = 65535.0f * (float)Color::f2xyz(fz) * Color::D50z;
float y_ = (LL > Color::epskap) ? (float) 65535.0 * fy * fy * fy : 65535.0f * LL / Color::kappa;
xa[j - cx] = CLIP((int) round(x_)) ;
ya[j - cx] = CLIP((int) round(y_));
za[j - cx] = CLIP((int) round(z_));
xa[j - cx] = float2uint16range(x_);
ya[j - cx] = float2uint16range(y_);
za[j - cx] = float2uint16range(z_);
if(bw && y_ < 65535.f) { //force Bw value and take highlight into account
xa[j - cx] = (int) round(y_ * Color::D50x);
za[j - cx] = (int) round(y_ * Color::D50z);
xa[j - cx] = float2uint16range(y_ * Color::D50x);
za[j - cx] = float2uint16range(y_ * Color::D50z);
}
}
@@ -581,7 +592,7 @@ Image16* ImProcFunctions::lab2rgb16b (LabImage* lab, int cx, int cy, int cw, int
cmsHPROFILE iprof = iccStore->getXYZProfile ();
lcmsMutex->lock ();
cmsHTRANSFORM hTransform = cmsCreateTransform (iprof, TYPE_RGB_16, oprofdef, TYPE_RGB_16, intent, cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE);
cmsHTRANSFORM hTransform = cmsCreateTransform (iprof, TYPE_RGB_16, oprofdef, TYPE_RGB_16, intent, cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE);
lcmsMutex->unlock ();
image->ExecCMSTransform(hTransform);