/
ufraw_developer.c
1043 lines (950 loc) · 35.6 KB
/
ufraw_developer.c
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/*
* UFRaw - Unidentified Flying Raw converter for digital camera images
*
* ufraw_developer.c - functions for developing images or more exactly pixels.
* Copyright 2004-2016 by Udi Fuchs
*
* This program 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 2 of the License, or
* (at your option) any later version.
*/
#include "ufraw.h"
#ifdef _OPENMP
#include <omp.h>
#endif
#include <math.h>
#include <string.h>
#include <lcms2.h>
#include <lcms2_plugin.h>
#include "ufraw_colorspaces.h"
static void lcms_message(cmsContext ContextID,
cmsUInt32Number ErrorCode,
const char *ErrorText)
{
(void) ContextID;
/* Possible ErrorCode: see cmsERROR_* in <lcms2.h>. */
(void) ErrorCode;
ufraw_message(UFRAW_ERROR, "%s", ErrorText);
}
developer_data *developer_init()
{
int i;
developer_data *d = g_new(developer_data, 1);
d->mode = -1;
d->gamma = -1;
d->linear = -1;
d->saturation = -1;
#ifdef UFRAW_CONTRAST
d->contrast = -1;
#endif
for (i = 0; i < profile_types; i++) {
d->profile[i] = NULL;
strcpy(d->profileFile[i], "no such file");
}
memset(&d->baseCurveData, 0, sizeof(d->baseCurveData));
d->baseCurveData.m_gamma = -1.0;
memset(&d->luminosityCurveData, 0, sizeof(d->luminosityCurveData));
d->luminosityCurveData.m_gamma = -1.0;
d->luminosityProfile = NULL;
cmsToneCurve **TransferFunction = (cmsToneCurve **)d->TransferFunction;
TransferFunction[0] = cmsBuildGamma(NULL, 1.0);
TransferFunction[1] = TransferFunction[2] = cmsBuildGamma(NULL, 1.0);
d->saturationProfile = NULL;
d->adjustmentProfile = NULL;
d->intent[out_profile] = -1;
d->intent[display_profile] = -1;
d->updateTransform = TRUE;
d->colorTransform = NULL;
d->working2displayTransform = NULL;
d->rgbtolabTransform = NULL;
d->grayscaleMode = -1;
d->grayscaleMixer[0] = d->grayscaleMixer[1] = d->grayscaleMixer[2] = -1;
for (i = 0; i < max_adjustments; i++) { /* Suppress valgrind error. */
d->lightnessAdjustment[i].adjustment = 0.0;
d->lightnessAdjustment[i].hue = 0.0;
d->lightnessAdjustment[i].hueWidth = 0.0;
}
cmsSetLogErrorHandler(lcms_message);
return d;
}
void developer_destroy(developer_data *d)
{
int i;
if (d == NULL) return;
for (i = 0; i < profile_types; i++)
if (d->profile[i] != NULL) cmsCloseProfile(d->profile[i]);
cmsCloseProfile(d->luminosityProfile);
cmsFreeToneCurve(d->TransferFunction[0]);
cmsFreeToneCurve(d->TransferFunction[1]);
cmsCloseProfile(d->saturationProfile);
cmsCloseProfile(d->adjustmentProfile);
if (d->colorTransform != NULL)
cmsDeleteTransform(d->colorTransform);
if (d->working2displayTransform != NULL)
cmsDeleteTransform(d->working2displayTransform);
if (d->rgbtolabTransform != NULL)
cmsDeleteTransform(d->rgbtolabTransform);
g_free(d);
}
static const char *embedded_display_profile = "embedded display profile";
/*
* Emulates cmsTakeProductName() from lcms 1.x.
*
* This is tailored for use with statically allocated strings and not
* thread-safe.
*/
const char *cmsTakeProductName(cmsHPROFILE profile)
{
static char name[max_name * 2 + 4];
char manufacturer[max_name], model[max_name];
name[0] = manufacturer[0] = model[0] = '\0';
cmsGetProfileInfoASCII(profile, cmsInfoManufacturer,
"en", "US", manufacturer, max_name);
cmsGetProfileInfoASCII(profile, cmsInfoModel,
"en", "US", model, max_name);
if (!manufacturer[0] && !model[0]) {
cmsGetProfileInfoASCII(profile, cmsInfoDescription,
"en", "US", name, max_name * 2 + 4);
} else {
if (!manufacturer[0] || (strncmp(model, manufacturer, 8) == 0) ||
strlen(model) > 30)
strcpy(name, model);
else
sprintf(name, "%s - %s", model, manufacturer);
}
return name;
}
/* Update the profile in the developer
* and init values in the profile if needed */
void developer_profile(developer_data *d, int type, profile_data *p)
{
// embedded_display_profile were handled by developer_display_profile()
if (strcmp(d->profileFile[type], embedded_display_profile) == 0)
return;
if (strcmp(p->file, d->profileFile[type])) {
g_strlcpy(d->profileFile[type], p->file, max_path);
if (d->profile[type] != NULL) cmsCloseProfile(d->profile[type]);
if (!strcmp(d->profileFile[type], ""))
d->profile[type] = uf_colorspaces_create_srgb_profile();
else {
char *filename =
uf_win32_locale_filename_from_utf8(d->profileFile[type]);
d->profile[type] = cmsOpenProfileFromFile(filename, "r");
uf_win32_locale_filename_free(filename);
if (d->profile[type] == NULL)
d->profile[type] = uf_colorspaces_create_srgb_profile();
}
d->updateTransform = TRUE;
}
if (d->updateTransform) {
if (d->profile[type] != NULL)
g_strlcpy(p->productName, cmsTakeProductName(d->profile[type]),
max_name);
else
strcpy(p->productName, "");
}
}
void developer_display_profile(developer_data *d,
unsigned char *profile, int size, char productName[])
{
int type = display_profile;
if (profile != NULL) {
if (d->profile[type] != NULL) cmsCloseProfile(d->profile[type]);
d->profile[type] = cmsOpenProfileFromMem(profile, size);
// If embedded profile is invalid fall-back to sRGB
if (d->profile[type] == NULL)
d->profile[type] = uf_colorspaces_create_srgb_profile();
if (strcmp(d->profileFile[type], embedded_display_profile) != 0) {
// start using embedded profile
g_strlcpy(d->profileFile[type], embedded_display_profile, max_path);
d->updateTransform = TRUE;
}
} else {
if (strcmp(d->profileFile[type], embedded_display_profile) == 0) {
// embedded profile is no longer used
if (d->profile[type] != NULL) cmsCloseProfile(d->profile[type]);
d->profile[type] = uf_colorspaces_create_srgb_profile();
strcpy(d->profileFile[type], "");
d->updateTransform = TRUE;
}
}
if (d->updateTransform) {
if (d->profile[type] != NULL)
g_strlcpy(productName, cmsTakeProductName(d->profile[type]),
max_name);
else
strcpy(productName, "");
}
}
static double clamp(double in, double min, double max)
{
return (in < min) ? min : (in > max) ? max : in;
}
struct contrast_saturation {
double contrast;
double saturation;
};
/* Scale in along a curve from min to max by scale */
static double scale_curve(double in, double min, double max, double scale)
{
double halfrange = (max - min) / 2.0;
/* Normalize in to [ -1, 1 ] */
double value = clamp((in - min) / halfrange - 1.0, -1.0, 1.0);
/* Linear scaling makes more visual sense for low contrast values. */
if (scale > 1.0) {
double n = fabs(value);
if (n > 1.0)
n = 1.0;
scale = n <= 0.0 ? 0.0 : (1.0 - pow(1.0 - n, scale)) / n;
}
return clamp((value * scale + 1.0) * halfrange + min, min, max);
}
static const double max_luminance = 100.0;
static const double max_colorfulness = 181.019336; /* sqrt(128*128+128*128) */
static cmsInt32Number contrast_saturation_sampler(const cmsUInt16Number In[],
cmsUInt16Number Out[],
void *Cargo)
{
cmsCIELab Lab;
cmsCIELCh LCh;
const struct contrast_saturation* cs = Cargo;
cmsLabEncoded2Float(&Lab, In);
cmsLab2LCh(&LCh, &Lab);
LCh.L = scale_curve(LCh.L, 0.0, max_luminance, cs->contrast);
LCh.C = scale_curve(LCh.C, -max_colorfulness, max_colorfulness,
cs->saturation);
cmsLCh2Lab(&Lab, &LCh);
cmsFloat2LabEncoded(Out, &Lab);
return TRUE;
}
/* Based on lcms' cmsCreateBCHSWabstractProfile() */
static cmsHPROFILE create_contrast_saturation_profile(double contrast,
double saturation)
{
cmsHPROFILE hICC;
struct contrast_saturation cs = { contrast, saturation };
cmsPipeline* Pipeline = NULL;
cmsStage* CLUT = NULL;
hICC = cmsCreateProfilePlaceholder(NULL);
if (hICC == NULL) return NULL; // can't allocate
cmsSetDeviceClass(hICC, cmsSigAbstractClass);
cmsSetColorSpace(hICC, cmsSigLabData);
cmsSetPCS(hICC, cmsSigLabData);
cmsSetHeaderRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Creates a pipeline with 3D grid only
Pipeline = cmsPipelineAlloc(NULL, 3, 3);
if (!Pipeline) goto error_out;
if (!(CLUT = cmsStageAllocCLut16bit(NULL, 11, 3, 3, NULL)))
goto error_out;
if (!cmsStageSampleCLut16bit(CLUT, contrast_saturation_sampler, &cs, 0))
goto error_out;
#if LCMS_VERSION >= 2050
if (!cmsPipelineInsertStage(Pipeline, cmsAT_END, CLUT))
goto error_out;
#else
cmsPipelineInsertStage(Pipeline, cmsAT_END, CLUT);
#endif
// Create tags
cmsWriteTag(hICC, cmsSigMediaWhitePointTag, cmsD50_XYZ());
cmsWriteTag(hICC, cmsSigAToB0Tag, Pipeline);
// Pipeline is already on virtual profile
cmsPipelineFree(Pipeline);
return hICC;
error_out:
if (CLUT) cmsStageFree(CLUT);
if (Pipeline) cmsPipelineFree(Pipeline);
if (hICC) cmsCloseProfile(hICC);
return NULL;
}
static cmsInt32Number luminance_adjustment_sampler(const cmsUInt16Number In[],
cmsUInt16Number Out[],
void *Cargo)
{
cmsCIELab Lab;
cmsCIELCh LCh;
const developer_data *d = Cargo;
const lightness_adjustment *a;
cmsLabEncoded2Float(&Lab, In);
cmsLab2LCh(&LCh, &Lab);
double adj = 0.0;
int i;
for (i = 0, a = d->lightnessAdjustment; i < max_adjustments; i++, a++) {
double deltaHue = fabs(LCh.h - a->hue);
double hueWidth = MAX(a->hueWidth, 360.0 / 33.0);
if (deltaHue > 180.0)
deltaHue = 360.0 - deltaHue;
if (deltaHue > hueWidth)
continue;
/* This assigns the scales on a nice curve. */
double scale = cos(deltaHue / hueWidth * (M_PI / 2));
adj += (a->adjustment - 1) * (scale * scale);
}
/* The adjustment is scaled based on the colorfulness of the point,
* since uncolored pixels should not be adjusted. However, few
* (s)RGB colors have a colorfulness value larger than 1/2 of
* max_colorfulness, so use that as an actual maximum colorfulness. */
adj = adj * MIN(LCh.C / (max_colorfulness / 2), 1.0) + 1;
LCh.L *= adj;
cmsLCh2Lab(&Lab, &LCh);
cmsFloat2LabEncoded(Out, &Lab);
return TRUE;
}
/* Based on lcms' cmsCreateBCHSWabstractProfile() */
static cmsHPROFILE create_adjustment_profile(const developer_data *d)
{
cmsHPROFILE hICC;
cmsPipeline* Pipeline = NULL;
cmsStage* CLUT = NULL;
hICC = cmsCreateProfilePlaceholder(NULL);
if (hICC == NULL) return NULL; // can't allocate
cmsSetDeviceClass(hICC, cmsSigAbstractClass);
cmsSetColorSpace(hICC, cmsSigLabData);
cmsSetPCS(hICC, cmsSigLabData);
cmsSetHeaderRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Creates a pipeline with 3D grid only
Pipeline = cmsPipelineAlloc(NULL, 3, 3);
if (!Pipeline) goto error_out;
if (!(CLUT = cmsStageAllocCLut16bit(NULL, 11, 3, 3, NULL)))
goto error_out;
if (!cmsStageSampleCLut16bit(CLUT, luminance_adjustment_sampler,
(void*)d, 0))
goto error_out;
#if LCMS_VERSION >= 2050
if (!cmsPipelineInsertStage(Pipeline, cmsAT_END, CLUT))
goto error_out;
#else
cmsPipelineInsertStage(Pipeline, cmsAT_END, CLUT);
#endif
// Create tags
cmsWriteTag(hICC, cmsSigMediaWhitePointTag, cmsD50_XYZ());
cmsWriteTag(hICC, cmsSigAToB0Tag, Pipeline);
// Pipeline is already on virtual profile
cmsPipelineFree(Pipeline);
return hICC;
error_out:
if (CLUT) cmsStageFree(CLUT);
if (Pipeline) cmsPipelineFree(Pipeline);
if (hICC) cmsCloseProfile(hICC);
return NULL;
}
/* Find a for which (1-exp(-a x)/(1-exp(-a)) has derivative b at x=0 */
/* In other words, solve a/(1-exp(-a))==b */
static double findExpCoeff(double b)
{
double a, bg;
int try;
if (b <= 1) return 0;
if (b < 2) a = (b - 1) / 2;
else a = b;
bg = a / (1 - exp(-a));
/* The limit on try is just to be sure there is no infinite loop. */
for (try = 0; fabs(bg - b) > 0.001 || try < 100; try++) {
a = a + (b - bg);
bg = a / (1 - exp(-a));
}
return a;
}
static void developer_create_transform(developer_data *d, DeveloperMode mode)
{
if (!d->updateTransform)
return;
d->updateTransform = FALSE;
/* Create transformations according to mode:
* auto_developer|output_developer:
* colorTransformation from in to out
* working2displayTransform is null
* display_developer:
* with softproofing:
* colorTransformation from in to out
* working2displayTransform from out to display
* without softproofing:
* colorTransformation from in to display
* working2displayTransform is null
*/
int targetProfile;
if (mode == display_developer
&& d->intent[display_profile] == disable_intent) {
targetProfile = display_profile;
} else {
targetProfile = out_profile;
}
if (d->colorTransform != NULL)
cmsDeleteTransform(d->colorTransform);
if (strcmp(d->profileFile[in_profile], "") == 0 &&
strcmp(d->profileFile[targetProfile], "") == 0 &&
d->luminosityProfile == NULL &&
d->adjustmentProfile == NULL &&
d->saturationProfile == NULL) {
/* No transformation at all. */
d->colorTransform = NULL;
} else {
cmsHPROFILE prof[5];
int i = 0;
prof[i++] = d->profile[in_profile];
if (d->luminosityProfile != NULL)
prof[i++] = d->luminosityProfile;
if (d->adjustmentProfile != NULL)
prof[i++] = d->adjustmentProfile;
if (d->saturationProfile != NULL)
prof[i++] = d->saturationProfile;
prof[i++] = d->profile[targetProfile];
d->colorTransform = cmsCreateMultiprofileTransform(prof, i,
TYPE_RGB_16, TYPE_RGB_16, d->intent[out_profile], 0);
}
if (d->working2displayTransform != NULL)
cmsDeleteTransform(d->working2displayTransform);
if (mode == display_developer
&& d->intent[display_profile] != disable_intent
&& strcmp(d->profileFile[out_profile],
d->profileFile[display_profile]) != 0) {
// TODO: We should use TYPE_RGB_'bit_depth' for working profile.
d->working2displayTransform = cmsCreateTransform(
d->profile[out_profile], TYPE_RGB_8,
d->profile[display_profile], TYPE_RGB_8,
d->intent[display_profile], 0);
} else {
d->working2displayTransform = NULL;
}
if (d->rgbtolabTransform == NULL) {
cmsHPROFILE labProfile = cmsCreateLab2Profile(cmsD50_xyY());
d->rgbtolabTransform = cmsCreateTransform(d->profile[in_profile],
TYPE_RGB_16, labProfile,
TYPE_Lab_16, INTENT_ABSOLUTE_COLORIMETRIC, 0);
cmsCloseProfile(labProfile);
}
}
static gboolean test_adjustments(const lightness_adjustment values[max_adjustments],
gdouble reference, gdouble threshold)
{
int i;
for (i = 0; i < max_adjustments; ++i)
if (fabs(values[i].adjustment - reference) >= threshold)
return TRUE;
return FALSE;
}
void developer_prepare(developer_data *d, conf_data *conf,
int rgbMax, float rgb_cam[3][4], int colors, int useMatrix,
DeveloperMode mode)
{
unsigned c, i;
profile_data *in, *out, *display;
CurveData *baseCurve, *curve;
double total;
if (mode != d->mode) {
d->mode = mode;
d->updateTransform = TRUE;
}
in = &conf->profile[in_profile][conf->profileIndex[in_profile]];
/* For auto-tools we create an sRGB output. */
if (mode == auto_developer)
out = &conf->profile[out_profile][0];
else
out = &conf->profile[out_profile][conf->profileIndex[out_profile]];
display = &conf->profile[display_profile]
[conf->profileIndex[display_profile]];
baseCurve = &conf->BaseCurve[conf->BaseCurveIndex];
curve = &conf->curve[conf->curveIndex];
d->rgbMax = rgbMax;
d->colors = colors;
d->useMatrix = useMatrix;
double max = 0;
UFObject *chanMul = ufgroup_element(conf->ufobject, ufChannelMultipliers);
/* We assume that min(chanMul)==1.0 */
for (c = 0; c < d->colors; c++)
max = MAX(max, ufnumber_array_value(chanMul, c));
d->max = 0x10000 / max;
/* rgbWB is used in dcraw_finalized_interpolation() before the color filter
* array interpolation. It is normalized to guarantee that values do not
* exceed 0xFFFF */
for (c = 0; c < d->colors; c++)
d->rgbWB[c] = ufnumber_array_value(chanMul, c) * d->max *
0xFFFF / d->rgbMax;
if (d->useMatrix) {
if (d->colors == 1)
for (i = 0; i < 3; i++)
d->colorMatrix[i][0] = rgb_cam[0][0] * 0x10000;
else
for (i = 0; i < 3; i++)
for (c = 0; c < d->colors; c++)
d->colorMatrix[i][c] = rgb_cam[i][c] * 0x10000;
}
switch (conf->grayscaleMode) {
case grayscale_mixer:
d->grayscaleMode = grayscale_mixer;
for (c = 0, total = 0.0; c < 3; ++c)
total += fabs(conf->grayscaleMixer[c]);
total = total == 0.0 ? 1.0 : total;
for (c = 0; c < 3; ++c)
d->grayscaleMixer[c] = conf->grayscaleMixer[c] / total;
break;
case grayscale_lightness:
case grayscale_value:
d->grayscaleMode = conf->grayscaleMode;
break;
default:
d->grayscaleMode = grayscale_none;
}
d->restoreDetails = conf->restoreDetails;
int clipHighlights = conf->clipHighlights;
unsigned exposure = pow(2, conf->exposure) * 0x10000;
/* Handle the exposure normalization for Canon EOS cameras. */
if (conf->ExposureNorm > 0)
exposure = (guint64)exposure * d->rgbMax / conf->ExposureNorm;
if (exposure >= 0x10000) d->restoreDetails = clip_details;
if (exposure <= 0x10000) clipHighlights = digital_highlights;
/* Check if gamma curve data has changed. */
if (in->gamma != d->gamma || in->linear != d->linear ||
exposure != d->exposure || clipHighlights != d->clipHighlights ||
memcmp(baseCurve, &d->baseCurveData, sizeof(CurveData)) != 0) {
d->baseCurveData = *baseCurve;
guint16 BaseCurve[0x10000];
CurveSample *cs = CurveSampleInit(0x10000, 0x10000);
ufraw_message(UFRAW_RESET, NULL);
if (CurveDataSample(baseCurve, cs) != UFRAW_SUCCESS) {
ufraw_message(UFRAW_REPORT, NULL);
for (i = 0; i < 0x10000; i++) cs->m_Samples[i] = i;
}
for (i = 0; i < 0x10000; i++) BaseCurve[i] = cs->m_Samples[i];
CurveSampleFree(cs);
d->gamma = in->gamma;
d->linear = in->linear;
d->exposure = exposure;
d->clipHighlights = clipHighlights;
guint16 FilmCurve[0x10000];
if (d->clipHighlights == film_highlights) {
/* Exposure is set by FilmCurve[].
* Set initial slope to d->exposuse/0x10000 */
double a = findExpCoeff((double)d->exposure / 0x10000);
for (i = 0; i < 0x10000; i++) FilmCurve[i] =
(1 - exp(-a * i / 0x10000)) / (1 - exp(-a)) * 0xFFFF;
} else { /* digital highlights */
for (i = 0; i < 0x10000; i++) FilmCurve[i] = i;
}
double a, b, c, g;
/* The parameters of the linearized gamma curve are set in a way that
* keeps the curve continuous and smooth at the connecting point.
* d->linear also changes the real gamma used for the curve (g) in
* a way that keeps the derivative at i=0x10000 constant.
* This way changing the linearity changes the curve behaviour in
* the shadows, but has a minimal effect on the rest of the range. */
if (d->linear < 1.0) {
g = d->gamma * (1.0 - d->linear) / (1.0 - d->gamma * d->linear);
a = 1.0 / (1.0 + d->linear * (g - 1));
b = d->linear * (g - 1) * a;
c = pow(a * d->linear + b, g) / d->linear;
} else {
a = b = g = 0.0;
c = 1.0;
}
for (i = 0; i < 0x10000; i++)
if (BaseCurve[FilmCurve[i]] < 0x10000 * d->linear)
d->gammaCurve[i] = MIN(c * BaseCurve[FilmCurve[i]], 0xFFFF);
else
d->gammaCurve[i] = MIN(pow(a * BaseCurve[FilmCurve[i]] / 0x10000 + b,
g) * 0x10000, 0xFFFF);
}
developer_profile(d, in_profile, in);
developer_profile(d, out_profile, out);
if (conf->intent[out_profile] != d->intent[out_profile]) {
d->intent[out_profile] = conf->intent[out_profile];
d->updateTransform = TRUE;
}
/* For auto-tools we ignore all the output settings:
* luminosity, saturation, output profile and proofing. */
if (mode == auto_developer) {
developer_create_transform(d, mode);
return;
}
developer_profile(d, display_profile, display);
if (conf->intent[display_profile] != d->intent[display_profile]) {
d->intent[display_profile] = conf->intent[display_profile];
d->updateTransform = TRUE;
}
/* Check if curve data has changed. */
if (memcmp(curve, &d->luminosityCurveData, sizeof(CurveData))) {
d->luminosityCurveData = *curve;
/* Trivial curve does not require a profile */
if (CurveDataIsTrivial(curve)) {
d->luminosityProfile = NULL;
} else {
cmsCloseProfile(d->luminosityProfile);
CurveSample *cs = CurveSampleInit(0x100, 0x10000);
ufraw_message(UFRAW_RESET, NULL);
if (CurveDataSample(curve, cs) != UFRAW_SUCCESS) {
ufraw_message(UFRAW_REPORT, NULL);
d->luminosityProfile = NULL;
} else {
cmsToneCurve **TransferFunction =
(cmsToneCurve **)d->TransferFunction;
cmsFloat32Number values[0x100];
cmsFreeToneCurve(TransferFunction[0]);
for (i = 0; i < 0x100; i++)
values[i] = (cmsFloat32Number) cs->m_Samples[i] / 0x10000;
TransferFunction[0] =
cmsBuildTabulatedToneCurveFloat(NULL, 0x100, values);
d->luminosityProfile = cmsCreateLinearizationDeviceLink(
cmsSigLabData, TransferFunction);
cmsSetDeviceClass(d->luminosityProfile, cmsSigAbstractClass);
}
CurveSampleFree(cs);
}
d->updateTransform = TRUE;
}
if (memcmp(d->lightnessAdjustment, conf->lightnessAdjustment,
sizeof d->lightnessAdjustment) != 0) {
/* Adjustments have changed, need to update them. */
d->updateTransform = TRUE;
memcpy(d->lightnessAdjustment, conf->lightnessAdjustment,
sizeof d->lightnessAdjustment);
cmsCloseProfile(d->adjustmentProfile);
d->adjustmentProfile = test_adjustments(d->lightnessAdjustment, 1.0, 0.01)
? create_adjustment_profile(d)
: NULL;
}
if (conf->saturation != d->saturation
#ifdef UFRAW_CONTRAST
|| conf->contrast != d->contrast
#endif
|| conf->grayscaleMode == grayscale_luminance) {
#ifdef UFRAW_CONTRAST
d->contrast = conf->contrast;
#endif
d->saturation = (conf->grayscaleMode == grayscale_luminance)
? 0 : conf->saturation;
cmsCloseProfile(d->saturationProfile);
if (d->saturation == 1.0
#ifdef UFRAW_CONTRAST
&& d->contrast == 1.0
#endif
)
d->saturationProfile = NULL;
else
d->saturationProfile = create_contrast_saturation_profile(
#ifdef UFRAW_CONTRAST
d->contrast,
#else
1.0,
#endif
d->saturation);
d->updateTransform = TRUE;
}
developer_create_transform(d, mode);
}
static void apply_matrix(const developer_data *d,
const gint64 in[4],
gint64 out[3])
{
gint64 tmp[3];
unsigned c, cc;
for (cc = 0; cc < 3; cc++) {
tmp[cc] = 0;
for (c = 0; c < d->colors; c++)
tmp[cc] += in[c] * d->colorMatrix[cc][c];
}
for (cc = 0; cc < 3; cc++)
out[cc] = MAX(tmp[cc] / 0x10000, 0);
}
static void cond_apply_matrix(const developer_data *d,
const gint64 in[4],
gint64 out[3])
{
if (d->useMatrix)
apply_matrix(d, in, out);
else
memcpy(out, in, 3 * sizeof out[0]);
}
extern const double xyz_rgb[3][3];
static const double rgb_xyz[3][3] = { /* RGB from XYZ */
{ 3.24048, -1.53715, -0.498536 },
{ -0.969255, 1.87599, 0.0415559 },
{ 0.0556466, -0.204041, 1.05731 }
};
// Convert linear RGB to CIE-LCh
void uf_rgb_to_cielch(gint64 rgb[3], float lch[3])
{
int c, cc, i;
float r, xyz[3], lab[3];
// The use of static varibles here should be thread safe.
// In the worst case cbrt[] will be calculated more than once.
static gboolean firstRun = TRUE;
static float cbrt[0x10000];
if (firstRun) {
for (i = 0; i < 0x10000; i++) {
r = i / 65535.0;
cbrt[i] = r > 0.008856 ? pow(r, 1 / 3.0) : 7.787 * r + 16 / 116.0;
}
firstRun = FALSE;
}
xyz[0] = xyz[1] = xyz[2] = 0.5;
for (c = 0; c < 3; c++)
for (cc = 0; cc < 3; cc++)
xyz[cc] += xyz_rgb[cc][c] * rgb[c];
for (c = 0; c < 3; c++)
xyz[c] = cbrt[MAX(MIN((int)xyz[c], 0xFFFF), 0)];
lab[0] = 116 * xyz[1] - 16;
lab[1] = 500 * (xyz[0] - xyz[1]);
lab[2] = 200 * (xyz[1] - xyz[2]);
lch[0] = lab[0];
lch[1] = sqrt(lab[1] * lab[1] + lab[2] * lab[2]);
lch[2] = atan2(lab[2], lab[1]);
}
// Convert CIE-LCh to linear RGB
void uf_cielch_to_rgb(float lch[3], gint64 rgb[3])
{
int c, cc;
float xyz[3], fx, fy, fz, xr, yr, zr, kappa, epsilon, tmpf, lab[3];
epsilon = 0.008856;
kappa = 903.3;
lab[0] = lch[0];
lab[1] = lch[1] * cos(lch[2]);
lab[2] = lch[1] * sin(lch[2]);
yr = (lab[0] <= kappa * epsilon) ?
(lab[0] / kappa) : (pow((lab[0] + 16.0) / 116.0, 3.0));
fy = (yr <= epsilon) ? ((kappa * yr + 16.0) / 116.0) : ((lab[0] + 16.0) / 116.0);
fz = fy - lab[2] / 200.0;
fx = lab[1] / 500.0 + fy;
zr = (pow(fz, 3.0) <= epsilon) ? ((116.0 * fz - 16.0) / kappa) : (pow(fz, 3.0));
xr = (pow(fx, 3.0) <= epsilon) ? ((116.0 * fx - 16.0) / kappa) : (pow(fx, 3.0));
xyz[0] = xr * 65535.0 - 0.5;
xyz[1] = yr * 65535.0 - 0.5;
xyz[2] = zr * 65535.0 - 0.5;
for (c = 0; c < 3; c++) {
tmpf = 0;
for (cc = 0; cc < 3; cc++)
tmpf += rgb_xyz[c][cc] * xyz[cc];
rgb[c] = MAX(tmpf, 0);
}
}
void uf_raw_to_cielch(const developer_data *d,
const guint16 raw[4],
float lch[3])
{
gint64 tmp[4];
guint16 rgbpixel[3];
guint16 labpixel[3];
cmsCIELab Lab;
cmsCIELCh LCh;
unsigned int c;
for (c = 0; c < d->colors; ++c) {
tmp[c] = raw[c];
tmp[c] *= d->rgbWB[c];
tmp[c] /= 0x10000;
}
cond_apply_matrix(d, tmp, tmp);
for (c = 0; c < 3; ++c)
rgbpixel[c] = tmp[c];
cmsDoTransform(d->rgbtolabTransform, rgbpixel, labpixel, 1);
cmsLabEncoded2Float(&Lab, labpixel);
cmsLab2LCh(&LCh, &Lab);
lch[0] = LCh.L;
lch[1] = LCh.C;
lch[2] = LCh.h;
}
static void MaxMidMin(const gint64 p[3], int *maxc, int *midc, int *minc)
{
gint64 a = p[0];
gint64 b = p[1];
gint64 c = p[2];
int max = 0;
int mid = 1;
int min = 2;
if (a < b) {
gint64 tmp = b;
b = a;
a = tmp;
max = 1;
mid = 0;
}
if (b < c) {
b = c;
min = mid;
mid = 2;
if (a < b) {
int tmp = max;
max = mid;
mid = tmp;
}
}
*maxc = max;
*midc = mid;
*minc = min;
}
void develop(void *po, guint16 pix[4], developer_data *d, int mode, int count)
{
guint16 c, tmppix[3], *buf;
int i;
if (mode == 16) buf = po;
else buf = g_alloca(count * 6);
#ifdef _OPENMP
#pragma omp parallel \
if (count > 16) \
default(none) \
shared(d, buf, count, pix) \
private(i, tmppix, c)
{
int chunk = count / omp_get_num_threads() + 1;
int offset = chunk * omp_get_thread_num();
int width = (chunk > count - offset) ? count - offset : chunk;
for (i = offset; i < offset + width; i++) {
develop_linear(pix + i * 4, tmppix, d);
for (c = 0; c < 3; c++)
buf[i * 3 + c] = d->gammaCurve[tmppix[c]];
}
if (d->colorTransform != NULL)
cmsDoTransform(d->colorTransform,
buf + offset * 3, buf + offset * 3, width);
}
#else
for (i = 0; i < count; i++) {
develop_linear(pix + i * 4, tmppix, d);
for (c = 0; c < 3; c++)
buf[i * 3 + c] = d->gammaCurve[tmppix[c]];
}
if (d->colorTransform != NULL)
cmsDoTransform(d->colorTransform, buf, buf, count);
#endif
if (mode != 16) {
guint8 *p8 = po;
for (i = 0; i < 3 * count; i++) p8[i] = buf[i] >> 8;
}
}
void develop_display(void *pout, void *pin, developer_data *d, int count)
{
if (d->working2displayTransform == NULL)
g_error("develop_display: working2displayTransform == NULL");
cmsDoTransform(d->working2displayTransform, pin, pout, count);
}
static void develop_grayscale(guint16 *pixel, const developer_data *d)
{
gint32 spot;
guint16 min;
guint16 max;
switch (d->grayscaleMode) {
case grayscale_mixer:
spot = pixel[0] * d->grayscaleMixer[0]
+ pixel[1] * d->grayscaleMixer[1]
+ pixel[2] * d->grayscaleMixer[2];
if (spot > 65535) spot = 65535;
else if (spot < 0) spot = 0;
break;
case grayscale_lightness:
min = max = pixel[0];
if (pixel[1] > max) max = pixel[1];
if (pixel[2] > max) max = pixel[2];
if (pixel[1] < min) min = pixel[1];
if (pixel[2] < min) min = pixel[2];
spot = ((int)min + (int)max) / 2;
break;
case grayscale_value:
max = pixel[0];
if (pixel[1] > max) max = pixel[1];
if (pixel[2] > max) max = pixel[2];
spot = max;
break;
default:
return;
}
pixel[0] = pixel[1] = pixel[2] = spot;
}
void develop_linear(guint16 in[4], guint16 out[3], developer_data *d)
{
unsigned c;
gint64 tmppix[4];
gboolean clipped = FALSE;
for (c = 0; c < d->colors; c++) {
/* Set WB, normalizing tmppix[c]<0x10000 */
tmppix[c] = in[c];
tmppix[c] *= d->rgbWB[c];
tmppix[c] /= 0x10000;
if (d->restoreDetails != clip_details &&
tmppix[c] > d->max) {
clipped = TRUE;
} else {
tmppix[c] = MIN(tmppix[c], d->max);
}
/* We are counting on the fact that film_highlights
* and !clip_highlights cannot be set simultaneously. */
if (d->clipHighlights == film_highlights)
tmppix[c] = tmppix[c] * 0x10000 / d->max;
else
tmppix[c] = tmppix[c] * d->exposure / d->max;
}
if (d->colors == 1)
tmppix[1] = tmppix[2] = tmppix[0];
if (clipped) {
/* At this point a value of d->exposure in tmppix[c] corresponds
* to "1.0" (full exposure). Still the maximal value can be
* d->exposure * 0x10000 / d->max */
gint64 unclippedPix[3], clippedPix[3];
cond_apply_matrix(d, tmppix, unclippedPix);
for (c = 0; c < 3; c++) tmppix[c] = MIN(tmppix[c], d->exposure);
cond_apply_matrix(d, tmppix, clippedPix);
if (d->restoreDetails == restore_lch_details) {
float lch[3], clippedLch[3], unclippedLch[3];
uf_rgb_to_cielch(unclippedPix, unclippedLch);
uf_rgb_to_cielch(clippedPix, clippedLch);
//lch[0] = clippedLch[0] + (unclippedLch[0]-clippedLch[0]) * x;
lch[0] = unclippedLch[0];
lch[1] = clippedLch[1];
lch[2] = clippedLch[2];
uf_cielch_to_rgb(lch, tmppix);
} else { /* restore_hsv_details */
int maxc, midc, minc;
MaxMidMin(unclippedPix, &maxc, &midc, &minc);
gint64 unclippedLum = unclippedPix[maxc];
gint64 clippedLum = clippedPix[maxc];
/*gint64 unclippedSat;
if ( unclippedPix[maxc]==0 )
unclippedSat = 0;
else
unclippedSat = 0x10000 -
unclippedPix[minc] * 0x10000 / unclippedPix[maxc];*/
gint64 clippedSat;
if (clippedPix[maxc] < clippedPix[minc] || clippedPix[maxc] == 0)
clippedSat = 0;
else
clippedSat = 0x10000 -
clippedPix[minc] * 0x10000 / clippedPix[maxc];