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exr: OpenEXR 3.4 supports two compression types for HTJ2K #4871

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Merged
lgritz merged 5 commits into from
Aug 29, 2025
Merged

exr: OpenEXR 3.4 supports two compression types for HTJ2K #4871

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TodicaIonut Aug 29, 2025
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TodicaIonut Aug 29, 2025
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TodicaIonut Aug 29, 2025
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TodicaIonut Aug 29, 2025
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Update src/doc/builtinplugins.rst
lgritz Aug 29, 2025
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4 changes: 2 additions & 2 deletions src/doc/builtinplugins.rst
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Expand Up @@ -1540,8 +1540,8 @@ The official OpenEXR site is http://www.openexr.com/.
* - ``compression``
- string
- one of: ``"none"``, ``"rle"``, ``"zip"``, ``"zips"``, ``"piz"``,
``"pxr24"``, ``"b44"``, ``"b44a"``, ``"dwaa"``, ``"dwab"`` or ``"htj2k"``.
(``"htj2k"`` is only supported with OpenEXR 3.4 or later.)
``"pxr24"``, ``"b44"``, ``"b44a"``, ``"dwaa"``, ``"dwab"``, ``"htj2k256"`` or ``"htj2k32"``.
(``"htj2k256"`` or ``"htj2k32"`` is only supported with OpenEXR 3.4 or later.)
If the writer receives a request for a compression type it does not
recognize or is not supported by the version of OpenEXR on the
system, it will use ``"zip"`` by default. For ``"dwaa"`` and
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7 changes: 5 additions & 2 deletions src/openexr.imageio/exrinput.cpp
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Expand Up @@ -431,8 +431,11 @@ OpenEXRInput::PartInfo::parse_header(OpenEXRInput* in,
case Imf::B44A_COMPRESSION: comp = "b44a"; break;
case Imf::DWAA_COMPRESSION: comp = "dwaa"; break;
case Imf::DWAB_COMPRESSION: comp = "dwab"; break;
#ifdef IMF_HTJ2K_COMPRESSION
case Imf::HTJ2K_COMPRESSION: comp = "htj2k"; break;
#ifdef IMF_HTJ2K256_COMPRESSION
case EXR_COMPRESSION_HTJ2K256: comp = "htj2k256"; break;
#endif
#ifdef IMF_HTJ2K32_COMPRESSION
case EXR_COMPRESSION_HTJ2K32: comp = "htj2k32"; break;
#endif
default: break;
}
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7 changes: 5 additions & 2 deletions src/openexr.imageio/exrinput_c.cpp
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Expand Up @@ -568,8 +568,11 @@ OpenEXRCoreInput::PartInfo::parse_header(OpenEXRCoreInput* in,
case EXR_COMPRESSION_B44A: comp = "b44a"; break;
case EXR_COMPRESSION_DWAA: comp = "dwaa"; break;
case EXR_COMPRESSION_DWAB: comp = "dwab"; break;
#ifdef IMF_HTJ2K_COMPRESSION
case EXR_COMPRESSION_HTJ2K: comp = "htj2k"; break;
#ifdef IMF_HTJ2K256_COMPRESSION
case EXR_COMPRESSION_HTJ2K256: comp = "htj2k256"; break;
#endif
#ifdef IMF_HTJ2K32_COMPRESSION
case EXR_COMPRESSION_HTJ2K32: comp = "htj2k32"; break;
#endif
default: break;
}
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10 changes: 7 additions & 3 deletions src/openexr.imageio/exroutput.cpp
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Expand Up @@ -961,9 +961,13 @@ OpenEXROutput::put_parameter(const std::string& name, TypeDesc type,
header.compression() = Imf::DWAA_COMPRESSION;
else if (Strutil::iequals(str, "dwab"))
header.compression() = Imf::DWAB_COMPRESSION;
#ifdef IMF_HTJ2K_COMPRESSION
else if (Strutil::iequals(str, "htj2k"))
header.compression() = Imf::HTJ2K_COMPRESSION;
#ifdef IMF_HTJ2K256_COMPRESSION
else if (Strutil::iequals(str, "htj2k256"))
header.compression() = Imf::HTJ2K256_COMPRESSION;
#endif
#ifdef IMF_HTJ2K32_COMPRESSION
else if (Strutil::iequals(str, "htj2k32"))
header.compression() = Imf::HTJ2K32_COMPRESSION;
#endif
}
return true;
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