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Cancelling a 32 bits Tiff workaround, now the Gamma value from embedded

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ICC profile is correctly handled
This commit is contained in:
Hombre 2016-10-11 23:21:41 +02:00
parent a989d440b1
commit 81c5b1ca41
1 changed files with 33 additions and 55 deletions
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32
rtengine/imageio.cc
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@ -771,8 +771,9 @@ int ImageIO::loadTIFF (Glib::ustring fname)
* We could use the min/max values set in TIFFTAG_SMINSAMPLEVALUE and * We could use the min/max values set in TIFFTAG_SMINSAMPLEVALUE and
* TIFFTAG_SMAXSAMPLEVALUE, but for now, we normalize the image to the * TIFFTAG_SMAXSAMPLEVALUE, but for now, we normalize the image to the
* effective minimum and maximum values * effective minimum and maximum values
* */
printf("Informations de \"%s\":\n", fname.c_str()); if (options.rtSettings.verbose) {
printf("Informations of \"%s\":\n", fname.c_str());
uint16 tiffDefaultScale, tiffBaselineExposure, tiffLinearResponseLimit; uint16 tiffDefaultScale, tiffBaselineExposure, tiffLinearResponseLimit;
if (TIFFGetField(in, TIFFTAG_DEFAULTSCALE, &tiffDefaultScale)) { if (TIFFGetField(in, TIFFTAG_DEFAULTSCALE, &tiffDefaultScale)) {
printf(" DefaultScale: %d\n", tiffDefaultScale); printf(" DefaultScale: %d\n", tiffDefaultScale);
@ -801,9 +802,8 @@ int ImageIO::loadTIFF (Glib::ustring fname)
} }
else else
printf(" No maximum value!\n\n"); printf(" No maximum value!\n\n");
printf("\n"); printf(" Those values are not taken into account, the image data are normalized to a [0;1] range\n\n");
*/ }
char* profdata; char* profdata;
deleteLoadedProfileData(); deleteLoadedProfileData();
@ -811,30 +811,8 @@ int ImageIO::loadTIFF (Glib::ustring fname)
if (TIFFGetField(in, TIFFTAG_ICCPROFILE, &loadedProfileLength, &profdata)) { if (TIFFGetField(in, TIFFTAG_ICCPROFILE, &loadedProfileLength, &profdata)) {
embProfile = cmsOpenProfileFromMem (profdata, loadedProfileLength); embProfile = cmsOpenProfileFromMem (profdata, loadedProfileLength);
// For 32 bits floating point images, gamma is forced to linear in embedded ICC profiles
if ( sampleFormat & (IIOSF_LOGLUV24 | IIOSF_LOGLUV32 | IIOSF_FLOAT) ) {
// Modifying the gammaTRG tags
cmsWriteTag(embProfile, cmsSigGreenTRCTag, (void*)Color::linearGammaTRC );
cmsWriteTag(embProfile, cmsSigRedTRCTag, (void*)Color::linearGammaTRC );
cmsWriteTag(embProfile, cmsSigBlueTRCTag, (void*)Color::linearGammaTRC );
// Saving the profile in the memory
cmsUInt32Number bytesNeeded = 0;
cmsSaveProfileToMem(embProfile, 0, &bytesNeeded);
if (bytesNeeded > 0) {
loadedProfileData = new char[bytesNeeded + 1];
cmsSaveProfileToMem(embProfile, loadedProfileData, &bytesNeeded);
}
loadedProfileLength = (int)bytesNeeded;
} else {
// Saving the profile in the memory as is
loadedProfileData = new char [loadedProfileLength]; loadedProfileData = new char [loadedProfileLength];
memcpy (loadedProfileData, profdata, loadedProfileLength); memcpy (loadedProfileData, profdata, loadedProfileLength);
}
} else { } else {
embProfile = NULL; embProfile = NULL;
} }