Skip to content

Add Lossy HTJ2K compression option for the OpenEXR plugin in OIIO #5408

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
TodicaIonut wants to merge 3 commits into
base: main
Choose a base branch
from
+18 −0
Open

Add Lossy HTJ2K compression option for the OpenEXR plugin in OIIO #5408

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
a0a25b5
exrinput.cpp HTJ2K
TodicaIonut Aug 17, 2026
d6f6750
exrinput_c.cpp HTJ2K
TodicaIonut Aug 17, 2026
8cb9bda
exroutput.cpp HTJ2K
TodicaIonut Aug 17, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 3 additions & 0 deletions src/openexr.imageio/exrinput.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -450,6 +450,9 @@ OpenEXRInput::PartInfo::parse_header(OpenEXRInput* in,
#endif
#ifdef IMF_HTJ2K32_COMPRESSION
case Imf::HTJ2K32_COMPRESSION: comp = "htj2k32"; break;
#endif
#ifdef IMF_HTJ2KL256_COMPRESSION
case Imf::HTJ2KL256_COMPRESSION: comp = "htj2kl256"; break;
#endif
default: break;
}
Expand Down
3 changes: 3 additions & 0 deletions src/openexr.imageio/exrinput_c.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -576,6 +576,9 @@ OpenEXRCoreInput::PartInfo::parse_header(OpenEXRCoreInput* in,
#endif
#ifdef IMF_HTJ2K32_COMPRESSION
case EXR_COMPRESSION_HTJ2K32: comp = "htj2k32"; break;
#endif
#ifdef IMF_HTJ2KL256_COMPRESSION
case EXR_COMPRESSION_HTJ2KL256: comp = "htj2kl256"; break;
#endif
default: break;
}
Expand Down
12 changes: 12 additions & 0 deletions src/openexr.imageio/exroutput.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -951,6 +951,14 @@ OpenEXROutput::spec_to_header(ImageSpec& spec, int subimage,
header.zipCompressionLevel() = (qual >= 1 && qual <= 9) ? qual : 4;
}
#endif
if (Strutil::istarts_with(comp, "htj2k") && qual > 110) {
#if OPENEXR_CODED_VERSION >= 30500
// OpenEXR 3.5.0 and later have an API for setting the quality level
// in the Header object. Older ones do it by setting an attribute, as
// below.
header.lossyHTJ2KQuality() = float(qual);
#endif
================
if (Strutil::istarts_with(comp, "dwa") && qual > 0) {
#if OPENEXR_CODED_VERSION >= 30103
// OpenEXR 3.1.3 and later have an API for setting the quality level
Expand Down Expand Up @@ -1204,6 +1212,10 @@ OpenEXROutput::put_parameter(const std::string& name, TypeDesc type,
#ifdef IMF_HTJ2K32_COMPRESSION
else if (Strutil::iequals(str, "htj2k32"))
header.compression() = Imf::HTJ2K32_COMPRESSION;
#endif
#ifdef HTJ2KL256_COMPRESSION
else if (Strutil::iequals(str, "htj2kl256"))
header.compression() = Imf::HTJ2KL256_COMPRESSION;
#endif
}
return true;
Expand Down
Loading