v3.2.0

Minor release with several additions, changes and improvements:

• Zip compression via libdeflate

  As of OpenEXR release v3.2, OpenEXR depends on libdeflate for DEFLATE-based compression. Previous OpenEXR releases relied on zlib. Builds of OpenEXR can choose either an libdeflate installation, or CMake can auto-fetch the source and build it internally. The internal build is linked statically, so no extra shared object is produced.

  See website/install.rst for more details.

• New camdkit/camdkit-enabled standard attributes

  These changes bring to OpenEXR new standard optional attributes that were discussed in the SMPTE Rapid Industry Solutions On-Set Virtual Production Initiative). Additionally, some useful attributes from the SMPTE ACES Container File Layout standard, SMPTE ST 2065-4:2023, have been included as well. The new attributes are:

  Support automated editorial workflow:

  • reelName
  • imageCounter
  • ascFramingDecisionList

  Support forensics:

  • cameraMake
  • cameraModel
  • cameraSerialNumber
  • cameraFirmware
  • cameraUuid
  • cameraLabel
  • lensMake
  • lensModel
  • lensSerialNumber
  • lensFirmware
  • cameraColorBalance

  Support pickup shots:

  • shutterAngle
  • cameraCCTSetting
  • cameraTintSetting

  Support metadata-driven match move:

  • sensorCenterOffset
  • sensorOverallDimensions
  • sensorPhotositePitch
  • sensorAcquisitionRectangle
  • nominalFocalLength
  • effectiveFocalLength
  • pinholeFocalLength
  • entrancePupilOffset
  • tStop (complementing existing aperture)

  Also, renderingTransform and lookTransform have been deprecated.

  See website/StandardAttributes.rst and PR #1383 for more details.

• Updated SO versioning policy

  This change adopts a policy of appending the MAJOR.MINOR.PATCH software release name to the SONAME to form the real name of the shared library.

  See website/install.rst and PR #1498 for more details.

• Python bindings & PyPI wheel

  Support for the OpenEXR python bindings have been formally adopted by the OpenEXR project.

• Miscellaneous improvements:

  • "docs" renamed to "website" (PR #1504)

  • Additional deep & multipart code examples (PR #1493
    and PR #1502)

  • Many small build/test fixes

  • bin tools man pages

  • Expanded test coverage

Specific OSS-fuzz issues addressed:

• OSS-fuzz 46459 Out-of-memory in openexr_exrcheck_fuzzer
• OSS-fuzz 46432 Heap-buffer-overflow in generic_unpack
• OSS-fuzz 46413 Integer-overflow in reconstruct_chunk_table
• OSS-fuzz 45718 Heap-double-free in Imf_3_1::RgbaInputFile::~RgbaInputFile
• OSS-fuzz 45716 Abrt in Imf_3_1::RgbaInputFile::~RgbaInputFile
• OSS-fuzz 43771 Direct-leak in Imf_3_1::RgbaInputFile::RgbaInputFile

v3.1.11

Patch release that fixes a build failure with -march=x86-64-v3

See CHANGES.md for details.

v3.1.10

Patch release that addresses miscellaneous build issues, test failures, and performance regressions, as well as:

OSS-fuzz 59457 Heap-buffer-overflow in LossyDctDecoder_execute

See CHANGES.md for details.

v2.5.9

Patch release that fixes a compile failure with gcc 13 and a problem with PyIlmBase's pkgconfig.

v3.1.9

Patch release that addresses miscellaneous build, doc, and test issues, in particular:

• Build fix for older macOS versions

Also:

• OSS-fuzz 59382 Heap-buffer-overflow in internal_huf_decompress

See CHANGES.md for details.

v3.1.8

Patch release that addresses miscellaneous build issues, for macOS in particular, but also includes:

• Support for DWA compression in OpenEXRCore
• Fix for threadpool deadlocks during shutdown on Windows

This release also addresses:

• OSS-fuzz 59070 Stack-buffer-overflow in DwaCompressor_readChannelRules

v3.1.7

Patch release that fixes a build regression on ARMv7, and fixes a build issue with zlib.

v3.1.6

Patch release that addresses various bug/build issues and includes several optimizations:

• NEON optimizations for ZIP reading
• Enable fast Huffman & Huffman zig-zag transform for Arm Neon
• Support relative and absolute libdir/includedir in pkg-config generation
• Fix for reading memory mapped files with DWA compression
• Enable SSE4 support on Windows
• Fast huf decoder
• CMake config for generating docs is now BUILD_DOC

Also, this release includes a major update and reorganization of the repo documentation and the https://openexr.com website.

In addition, numerous typos and misspellings in comments and doxygen content have been fixed via codespell.

Specific OSS-fuzz issues address:

• OSS-fuzz 52730 Heap-buffer-overflow in fasthuf_initialize
• OSS-fuzz 49698 Heap-buffer-overflow in fasthuf_decode
• OSS-fuzz 47517 Integer-overflow in reconstruct_chunk_table
• OSS-fuzz 47503 Heap-buffer-overflow in uncompress_b44_impl
• OSS-fuzz 47483 Heap-buffer-overflow in generic_unpack

v3.1.5

Patch release that address various bug/build/doc issues:

• Add backwards-compatibilty flags to the core library to match original behavior of the the c++ library. Fixes reading of certain files by the new core.
• Fix build failures on MSVC14 and MSVC 2022
• Fix build failure on latest 64-bit Ubuntu
• Documentation refers to primary branch as "main"
• Update the CI workflow matrix to VFX-CY2022
• Update auto-fetch Imath version to v3.1.5

Specific OSS-fuzz issues addressed:

• OSS-fuzz 46309 Heap-buffer-overflow in Imf_3_1::memstream_read
• OSS-fuzz 46083 Out-of-memory in openexr_exrcheck_fuzzer
• OSS-fuzz 45899 Integer-overflow in internal_exr_compute_chunk_offset_size
• OSS-fuzz 44084 Out-of-memory in openexr_exrcheck_fuzzer

v2.5.8

Patch release that backports two fixes:

• Fix MinGW build by dropping export on defaulted KeyCode::~KeyCode
• Use CMAKE_INSTALL_FULL_LIBDIR/INCLUDEDIR in pkgconfig