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rawTherapee/rtengine/iplab2rgb.cc

265 lines
7.7 KiB
C++

/*
* This file is part of RawTherapee.
*
* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
*
* RawTherapee is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* RawTherapee is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with RawTherapee. If not, see <http://www.gnu.org/licenses/>.
*/
#include <rtengine.h>
#include <improcfun.h>
#include <glibmm.h>
#include <iccstore.h>
#ifdef _OPENMP
#include <omp.h>
#endif
namespace rtengine {
#undef CLIP
#undef CLIPTO
#undef CMAXVAL
#define CMAXVAL 0xffff
#define CLIP(a) ((a)>0?((a)<CMAXVAL?(a):CMAXVAL):0)
#define CLIPTO(a,b,c) ((a)>(b)?((a)<(c)?(a):(c)):(b))
extern const Settings* settings;
void ImProcFunctions::lab2rgb (LabImage* lab, Image8* image) {
if (chroma_scale == 0)
return;
if (monitorTransform) {
int ix = 0;
short* buffer = new short [3*lab->W];
for (int i=0; i<lab->H; i++) {
unsigned short* rL = lab->L[i];
short* ra = lab->a[i];
short* rb = lab->b[i];
int iy = 0;
for (int j=0; j<lab->W; j++) {
int y_ = rL[j];
int x_ = rL[j]+10486+ra[j]*152/chroma_scale+141556;
int z_ = rL[j]+10486-rb[j]*380/chroma_scale+369619;
x_ = CLIPTO(x_,0,369820);
y_ = CLIPTO(y_,0,825745);
y_ = ycache[y_];
x_ = xcache[x_];
z_ = zcache[z_];
buffer[iy++] = CLIP(x_);
buffer[iy++] = CLIP(y_);
buffer[iy++] = CLIP(z_);
}
cmsDoTransform (monitorTransform, buffer, image->data + ix, lab->W);
ix += 3*lab->W;
}
delete [] buffer;
}
else {
#pragma omp parallel for if (multiThread)
for (int i=0; i<lab->H; i++) {
unsigned short* rL = lab->L[i];
short* ra = lab->a[i];
short* rb = lab->b[i];
int ix = 3*i*lab->W;
for (int j=0; j<lab->W; j++) {
int y_ = rL[j];
int x_ = rL[j]+10486+ra[j]*152/chroma_scale+141556;
int z_ = rL[j]+10486-rb[j]*380/chroma_scale+369619;
x_ = CLIPTO(x_,0,369820);
y_ = CLIPTO(y_,0,825745);
y_ = ycache[y_];
x_ = xcache[x_];
z_ = zcache[z_];
/* XYZ-D50 to RGB */
int R = (25689*x_-13261*y_-4022*z_) >> 13;
int G = (-8017*x_+15697*y_+274*z_) >> 13;
int B = (590*x_-1877*y_+11517*z_) >> 13;
/* copy RGB */
image->data[ix++] = gamma2curve[CLIP(R)] >> 8;
image->data[ix++] = gamma2curve[CLIP(G)] >> 8;
image->data[ix++] = gamma2curve[CLIP(B)] >> 8;
}
}
}
}
Image8* ImProcFunctions::lab2rgb (LabImage* lab, int cx, int cy, int cw, int ch, Glib::ustring profile) {
if (cx<0) cx = 0;
if (cy<0) cy = 0;
if (cx+cw>lab->W) cw = lab->W-cx;
if (cy+ch>lab->H) ch = lab->H-cy;
Image8* image = new Image8 (cw, ch);
cmsHPROFILE oprof = iccStore->getProfile (profile);
if (oprof) {
cmsHPROFILE iprof = iccStore->getXYZProfile ();
lcmsMutex->lock ();
cmsHTRANSFORM hTransform = cmsCreateTransform (iprof, TYPE_RGB_16, oprof, TYPE_RGB_8, settings->colorimetricIntent, 0);
lcmsMutex->unlock ();
int ix = 0;
short* buffer = new short [3*cw];
for (int i=cy; i<cy+ch; i++) {
unsigned short* rL = lab->L[i];
short* ra = lab->a[i];
short* rb = lab->b[i];
int iy = 0;
for (int j=cx; j<cx+cw; j++) {
int y_ = rL[j];
int x_ = rL[j]+10486+ra[j]*152/chroma_scale+141556;
int z_ = rL[j]+10486-rb[j]*380/chroma_scale+369619;
x_ = CLIPTO(x_,0,369820);
y_ = CLIPTO(y_,0,825745);
y_ = ycache[y_];
x_ = xcache[x_];
z_ = zcache[z_];
buffer[iy++] = CLIP(x_);
buffer[iy++] = CLIP(y_);
buffer[iy++] = CLIP(z_);
}
cmsDoTransform (hTransform, buffer, image->data + ix, cw);
ix += 3*cw;
}
delete [] buffer;
cmsDeleteTransform(hTransform);
}
else {
#pragma omp parallel for if (multiThread)
for (int i=cy; i<cy+ch; i++) {
unsigned short* rL = lab->L[i];
short* ra = lab->a[i];
short* rb = lab->b[i];
int ix = 3*i*cw;
for (int j=cx; j<cx+cw; j++) {
int y_ = rL[j];
int x_ = rL[j]+10486+ra[j]*152/chroma_scale+141556;
int z_ = rL[j]+10486-rb[j]*380/chroma_scale+369619;
x_ = CLIPTO(x_,0,369820);
y_ = CLIPTO(y_,0,825745);
y_ = ycache[y_];
x_ = xcache[x_];
z_ = zcache[z_];
int R = (25689*x_-13261*y_-4022*z_) >> 13;
int G = (-8017*x_+15697*y_+274*z_) >> 13;
int B = (590*x_-1877*y_+11517*z_) >> 13;
image->data[ix++] = gamma2curve[CLIP(R)] >> 8;
image->data[ix++] = gamma2curve[CLIP(G)] >> 8;
image->data[ix++] = gamma2curve[CLIP(B)] >> 8;
}
}
}
return image;
}
Image16* ImProcFunctions::lab2rgb16 (LabImage* lab, int cx, int cy, int cw, int ch, Glib::ustring profile) {
if (cx<0) cx = 0;
if (cy<0) cy = 0;
if (cx+cw>lab->W) cw = lab->W-cx;
if (cy+ch>lab->H) ch = lab->H-cy;
Image16* image = new Image16 (cw, ch);
cmsHPROFILE oprof = iccStore->getProfile (profile);
if (oprof) {
#pragma omp parallel for if (multiThread)
for (int i=cy; i<cy+ch; i++) {
unsigned short* rL = lab->L[i];
short* ra = lab->a[i];
short* rb = lab->b[i];
short* xa = (short*)image->r[i-cy];
short* ya = (short*)image->g[i-cy];
short* za = (short*)image->b[i-cy];
for (int j=cx; j<cx+cw; j++) {
int y_ = rL[j];
int x_ = rL[j]+10486+ra[j]*152/chroma_scale+141556;
int z_ = rL[j]+10486-rb[j]*380/chroma_scale+369619;
x_ = CLIPTO(x_,0,369820);
y_ = CLIPTO(y_,0,825745);
y_ = ycache[y_];
x_ = xcache[x_];
z_ = zcache[z_];
xa[j-cx] = CLIP(x_);
ya[j-cx] = CLIP(y_);
za[j-cx] = CLIP(z_);
}
}
cmsHPROFILE iprof = iccStore->getXYZProfile ();
lcmsMutex->lock ();
cmsHTRANSFORM hTransform = cmsCreateTransform (iprof, TYPE_RGB_16_PLANAR, oprof, TYPE_RGB_16_PLANAR, settings->colorimetricIntent, 0);
lcmsMutex->unlock ();
cmsDoTransform (hTransform, image->data, image->data, image->planestride/2);
cmsDeleteTransform(hTransform);
}
else {
#pragma omp parallel for if (multiThread)
for (int i=cy; i<cy+ch; i++) {
unsigned short* rL = lab->L[i];
short* ra = lab->a[i];
short* rb = lab->b[i];
for (int j=cx; j<cx+cw; j++) {
int y_ = rL[j];
int x_ = rL[j]+10486+ra[j]*152/chroma_scale+141556;
int z_ = rL[j]+10486-rb[j]*380/chroma_scale+369619;
x_ = CLIPTO(x_,0,369820);
y_ = CLIPTO(y_,0,825745);
y_ = ycache[y_];
x_ = xcache[x_];
z_ = zcache[z_];
int R = (25689*x_-13261*y_-4022*z_) >> 13;
int G = (-8017*x_+15697*y_+274*z_) >> 13;
int B = (590*x_-1877*y_+11517*z_) >> 13;
image->r[i-cy][j-cx] = gamma2curve[CLIP(R)];
image->g[i-cy][j-cx] = gamma2curve[CLIP(G)];
image->b[i-cy][j-cx] = gamma2curve[CLIP(B)];
}
}
}
return image;
}
}