static void init(void)
{
cmsCIEXYZ D65_XYZ = {0.95047, 1.0, 1.08883 };
cmsCIExyY D65;
cmsXYZ2xyY(&D65, &D65_XYZ);
cmsToneCurve *linear = cmsBuildGamma(NULL, 1.0);
cmsToneCurve *linrgb[3] = {linear,linear,linear};
cmsCIExyYTRIPLE primaries = {
{0.64, 0.33, 1.0},
{0.30, 0.60, 1.0},
{0.15, 0.06, 1.0}
};
cmsFloat64Number P[5] = { 2.4, 1. / 1.055, 0.055 / 1.055, 1. / 12.92, 0.04045 };
cmsToneCurve *srgb = cmsBuildParametricToneCurve(NULL, 4, P);
cmsToneCurve *srgbcurve[3] = {srgb,srgb,srgb};
cmsHPROFILE hsRGB = cmsCreateRGBProfile(&D65, &primaries, srgbcurve);
cmsHPROFILE hLab = cmsCreateLab4Profile(NULL);
cmsHPROFILE hlRGB = cmsCreateRGBProfile(&D65, &primaries, linrgb);
cmsHPROFILE hlGray = cmsCreateGrayProfile(cmsD50_xyY(), linear);
cmsSetHeaderFlags(hlGray, cmsEmbeddedProfileTrue);
cmsSaveProfileToFile(hlGray,"lgray.icc");
cmsSetHeaderFlags(hlRGB, cmsEmbeddedProfileTrue);
cmsSaveProfileToFile(hlRGB,"lrgb.icc");
xform_srgb_to_lrgb = cmsCreateTransform(hsRGB, TYPE_RGB_DBL,
hlRGB, TYPE_RGB_DBL,
INTENT_RELATIVE_COLORIMETRIC,
cmsFLAGS_NOOPTIMIZE /* preserve precision */
);
xform_srgb_to_lab = cmsCreateTransform(hsRGB, TYPE_RGB_DBL, hLab,
TYPE_Lab_DBL, INTENT_RELATIVE_COLORIMETRIC,
cmsFLAGS_NOOPTIMIZE);
xform_srgb_to_lgray = cmsCreateTransform(hsRGB, TYPE_RGB_DBL, hlGray,
TYPE_GRAY_DBL, INTENT_RELATIVE_COLORIMETRIC,
cmsFLAGS_NOOPTIMIZE);
cmsCloseProfile(hsRGB);
cmsCloseProfile(hlRGB);
cmsCloseProfile(hLab);
cmsCloseProfile(hlGray);
cmsFreeToneCurve(linear);
cmsFreeToneCurve(srgb);
cmsSetLogErrorHandler(errlog);
/* sRGB, RGB, Lab, Gray */
printf("R',G',B',R,G,B,L,a,b,Gray\n");
}
bool ProfileUtils::createIccProfile(bool isLaptop, const Edid &edid, const QString &filename)
{
cmsCIExyYTRIPLE chroma;
cmsCIExyY white_point;
cmsHPROFILE lcms_profile = NULL;
cmsToneCurve *transfer_curve[3] = { NULL, NULL, NULL };
bool ret = false;
cmsHANDLE dict = NULL;
/* ensure the per-user directory exists */
// Create dir path if not available
// check if the file doesn't already exist
QFileInfo fileInfo(filename);
if (fileInfo.exists()) {
qCWarning(COLORD) << "EDID ICC Profile already exists" << filename;
if (*transfer_curve != NULL)
cmsFreeToneCurve(*transfer_curve);
return false;
}
// copy color data from our structures
// Red
chroma.Red.x = edid.red().x();
chroma.Red.y = edid.red().y();
// Green
chroma.Green.x = edid.green().x();
chroma.Green.y = edid.green().y();
// Blue
chroma.Blue.x = edid.blue().x();
chroma.Blue.y = edid.blue().y();
// White
white_point.x = edid.white().x();
white_point.y = edid.white().y();
white_point.Y = 1.0;
// estimate the transfer function for the gamma
transfer_curve[0] = transfer_curve[1] = transfer_curve[2] = cmsBuildGamma(NULL, edid.gamma());
// create our generated profile
lcms_profile = cmsCreateRGBProfile(&white_point, &chroma, transfer_curve);
if (lcms_profile == NULL) {
qCWarning(COLORD) << "Failed to create ICC profile on cmsCreateRGBProfile";
if (*transfer_curve != NULL)
cmsFreeToneCurve(*transfer_curve);
return false;
}
cmsSetColorSpace(lcms_profile, cmsSigRgbData);
cmsSetPCS(lcms_profile, cmsSigXYZData);
cmsSetHeaderRenderingIntent(lcms_profile, INTENT_RELATIVE_COLORIMETRIC);
cmsSetDeviceClass(lcms_profile, cmsSigDisplayClass);
// copyright
ret = cmsWriteTagTextAscii(lcms_profile,
cmsSigCopyrightTag,
"No copyright");
if (!ret) {
qCWarning(COLORD) << "Failed to write copyright";
if (*transfer_curve != NULL)
cmsFreeToneCurve(*transfer_curve);
return false;
}
// set model
QString model;
if (isLaptop) {
model = DmiUtils::deviceModel();
} else {
model = edid.name();
}
if (model.isEmpty()) {
model = QStringLiteral("Unknown monitor");
}
ret = cmsWriteTagTextAscii(lcms_profile,
cmsSigDeviceModelDescTag,
model);
if (!ret) {
qCWarning(COLORD) << "Failed to write model";
if (*transfer_curve != NULL) {
cmsFreeToneCurve(*transfer_curve);
}
return false;
}
// write title
ret = cmsWriteTagTextAscii(lcms_profile,
cmsSigProfileDescriptionTag,
model);
if (!ret) {
qCWarning(COLORD) << "Failed to write description";
if (*transfer_curve != NULL)
cmsFreeToneCurve(*transfer_curve);
return false;
}
// get manufacturer
QString vendor;
if (isLaptop) {
vendor = DmiUtils::deviceVendor();
} else {
vendor = edid.vendor();
}
if (vendor.isEmpty()) {
vendor = QStringLiteral("Unknown vendor");
}
ret = cmsWriteTagTextAscii(lcms_profile,
cmsSigDeviceMfgDescTag,
vendor);
if (!ret) {
qCWarning(COLORD) << "Failed to write manufacturer";
if (*transfer_curve != NULL)
cmsFreeToneCurve(*transfer_curve);
return false;
}
// just create a new dict
dict = cmsDictAlloc(NULL);
// set the framework creator metadata
cmsDictAddEntryAscii(dict,
CD_PROFILE_METADATA_CMF_PRODUCT,
PACKAGE_NAME);
cmsDictAddEntryAscii(dict,
CD_PROFILE_METADATA_CMF_BINARY,
PACKAGE_NAME);
cmsDictAddEntryAscii(dict,
CD_PROFILE_METADATA_CMF_VERSION,
PACKAGE_VERSION);
/* set the data source so we don't ever prompt the user to
* recalibrate (as the EDID data won't have changed) */
cmsDictAddEntryAscii(dict,
CD_PROFILE_METADATA_DATA_SOURCE,
CD_PROFILE_METADATA_DATA_SOURCE_EDID);
// set 'ICC meta Tag for Monitor Profiles' data
cmsDictAddEntryAscii(dict, "EDID_md5", edid.hash());
if (!model.isEmpty())
cmsDictAddEntryAscii(dict, "EDID_model", model);
if (!edid.serial().isEmpty()) {
cmsDictAddEntryAscii(dict, "EDID_serial", edid.serial());
}
if (!edid.pnpId().isEmpty()) {
cmsDictAddEntryAscii(dict, "EDID_mnft", edid.pnpId());
}
if (!vendor.isEmpty()) {
cmsDictAddEntryAscii(dict, "EDID_manufacturer", vendor);
}
/* write new tag */
ret = cmsWriteTag(lcms_profile, cmsSigMetaTag, dict);
if (!ret) {
qCWarning(COLORD) << "Failed to write profile metadata";
if (*transfer_curve != NULL)
cmsFreeToneCurve(*transfer_curve);
return false;
}
/* write profile id */
ret = cmsMD5computeID(lcms_profile);
if (!ret) {
qCWarning(COLORD) << "Failed to write profile id";
if (dict != NULL)
cmsDictFree (dict);
if (*transfer_curve != NULL)
cmsFreeToneCurve(*transfer_curve);
return false;
}
/* save, TODO: get error */
ret = cmsSaveProfileToFile(lcms_profile, filename.toUtf8());
if (dict != NULL) {
cmsDictFree (dict);
}
if (*transfer_curve != NULL) {
cmsFreeToneCurve (*transfer_curve);
}
return ret;
}
int main(int argc, char *argv[])
{
int i, nargs, rc;
cmsHPROFILE Profiles[257];
cmsHPROFILE hProfile;
cmsUInt32Number dwFlags;
cmsHTRANSFORM hTransform = NULL;
// Here we are
fprintf(stderr, "little cms ICC device link generator - v2.2 [LittleCMS %2.2f]\n", LCMS_VERSION / 1000.0);
fflush(stderr);
// Initialize
InitUtils("linkicc");
rc = 0;
// Get the options
HandleSwitches(argc, argv);
// How many profiles to link?
nargs = (argc - xoptind);
if (nargs < 1)
return Help(0);
if (nargs > 255) {
FatalError("Holy profile! what are you trying to do with so many profiles!?");
goto Cleanup;
}
// Open all profiles
memset(Profiles, 0, sizeof(Profiles));
for (i=0; i < nargs; i++) {
Profiles[i] = OpenStockProfile(0, argv[i + xoptind]);
if (Profiles[i] == NULL) goto Cleanup;
if (Verbose >= 1) {
PrintProfileInformation(Profiles[i]);
}
}
// Ink limiting
if (InkLimit != 400.0) {
cmsColorSpaceSignature EndingColorSpace = cmsGetColorSpace(Profiles[nargs-1]);
Profiles[nargs++] = cmsCreateInkLimitingDeviceLink(EndingColorSpace, InkLimit);
}
// Set the flags
dwFlags = cmsFLAGS_KEEP_SEQUENCE;
switch (PrecalcMode) {
case 0: dwFlags |= cmsFLAGS_LOWRESPRECALC; break;
case 2: dwFlags |= cmsFLAGS_HIGHRESPRECALC; break;
case 1:
if (NumOfGridPoints > 0)
dwFlags |= cmsFLAGS_GRIDPOINTS(NumOfGridPoints);
break;
default:
{
FatalError("Unknown precalculation mode '%d'", PrecalcMode);
goto Cleanup;
}
}
if (BlackPointCompensation)
dwFlags |= cmsFLAGS_BLACKPOINTCOMPENSATION;
if (TagResult)
dwFlags |= cmsFLAGS_GUESSDEVICECLASS;
if (KeepLinearization)
dwFlags |= cmsFLAGS_CLUT_PRE_LINEARIZATION|cmsFLAGS_CLUT_POST_LINEARIZATION;
if (lUse8bits) dwFlags |= cmsFLAGS_8BITS_DEVICELINK;
cmsSetAdaptationState(ObserverAdaptationState);
// Create the color transform. Specify 0 for the format is safe as the transform
// is intended to be used only for the devicelink.
hTransform = cmsCreateMultiprofileTransform(Profiles, nargs, 0, 0, Intent, dwFlags|cmsFLAGS_NOOPTIMIZE);
if (hTransform == NULL) {
FatalError("Transform creation failed");
goto Cleanup;
}
hProfile = cmsTransform2DeviceLink(hTransform, Version, dwFlags);
if (hProfile == NULL) {
FatalError("Devicelink creation failed");
goto Cleanup;
}
SetTextTags(hProfile);
cmsSetHeaderRenderingIntent(hProfile, Intent);
if (cmsSaveProfileToFile(hProfile, cOutProf)) {
if (Verbose > 0)
fprintf(stderr, "Ok");
}
else
FatalError("Error saving file!");
cmsCloseProfile(hProfile);
Cleanup:
if (hTransform != NULL) cmsDeleteTransform(hTransform);
for (i=0; i < nargs; i++) {
if (Profiles[i] != NULL) cmsCloseProfile(Profiles[i]);
}
return rc;
}
