v1.2.1

Fixed

• Removed local replace directive from go.mod that broke CI builds
• Fixed gofmt alignment in compression/huffman.go

v1.2.0

Added

• HTJ2K compression/decompression of FLOAT (32-bit) channels
• Progressive HTJ2K decode API and float image output
• Channel-aware PIZ compress/decompress matching C++ OpenEXR layout
• Strided 2D Haar wavelet for PIZ float/uint channel support
• Float32 PIZ roundtrip and C++ interop tests

Fixed

• Huffman canonical code assignment to match OpenEXR C++ algorithm
• All go vet findings (unsafe.Pointer arithmetic, WriteByte signature, ARM64 frame size)
• All staticcheck findings (sync.Pool pointer wrapping, unused types, constant types)

Changed

• Updated go-jpeg2000 dependency to v1.2.1

v1.0.7

Bug Fix

• Fix scanline decoder crash on non-zero origin data windows — The scanline decoder (both sequential and parallel paths) and encoder were passing absolute data window coordinates to framebuffer WriteRow/ReadRow functions, causing out-of-bounds memory access when the data window origin was non-zero (e.g., dataWindow starting at (654, 245)). Now correctly maps to buffer-relative coordinates. Verified against OpenEXR multipart stereo test images (10-part beachball sequence). (Fixes #2)

v1.0.6

Bug Fix

• Fix ReadChunk EOF on multipart EXR files — All chunk-reading methods (ReadChunk, ReadTileChunk, ReadDeepChunk, ReadDeepTileChunk, and the optimized readChunkReuse) now correctly handle the 4-byte part number prefix in multipart EXR chunk headers. Previously, reading chunks from multipart files would misparse the header and fail with EOF. (Fixes #1)

Tests

• Added TestMultiPartReadChunkRoundtrip regression test that writes and reads back a multipart file, verifying data integrity per part.

v1.0.5

Fix LICENSE file to match official Apache 2.0 template for proper detection by pkg.go.dev.

v1.0.2

Changed

• Improved test coverage to 90%+ across all packages
• Added comprehensive tests for HTJ2K compression
• Added tests for error paths and edge cases

Coverage Summary

Package	Coverage
half	96.7%
compression	90.6%
exr	90.0%
exrmeta	97.3%
exrutil	91.0%
exrid	91.2%

v1.0.1

Fixed

• Corrected author name in NOTICE file

v1.0.0

go-openexr v1.0.0

A pure Go implementation of the OpenEXR high dynamic range image file format.

Features

• Full Format Support: Scanline, tiled, mipmap/ripmap, deep data, and multipart files
• All Compression Codecs: None, RLE, ZIP, ZIPS, PIZ, PXR24, B44, B44A, DWAA, DWAB
• High Performance: SIMD-optimized (ARM64 NEON, AMD64 SSE2) for critical paths
• Complete Metadata: All standard attributes plus Cryptomatte ID generation
• Zero CGO: Pure Go with no external dependencies for core functionality

Installation

go get github.com/mrjoshuak/go-openexr

Documentation

See the README for usage examples and API documentation.