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Support for JPEG XL (JXL) images - #3153

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winscripter wants to merge 226 commits into

SixLabors:mainfrom

winscripter:jxl-support

Draft

Support for JPEG XL (JXL) images#3153
winscripter wants to merge 226 commits into
SixLabors:mainfrom
winscripter:jxl-support

Commits on Jul 14, 2026
- Add JPEG XL format
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  85c851b
- Implement ac_context.h
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  996e93d
- Implemented frame_dimensions.h plus part of ac_strategy.h
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Commits on Jul 15, 2026
- Implement AC strategy
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  1ac6140
- Implement JxlMemoryManager
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  31b5505
- Implement image and memory buffers
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- Add metadata models
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- Add headers & aspect ratio helpers
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  762edd1
- Implement field encodings, move IJxlFields
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- Add xorshift implemetation
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  ac1c866
- It's Jxl not Jpeg
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  8581222
- Implement spline abstractions
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Commits on Jul 16, 2026
- Add quantized spline implementations
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- Prefer the term "coefficient"
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  90680b7
- Start work on ANS entropy
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  1e40482
- Implement JxlAnsHelper.GetPopulationCountPrecision
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  396cd8d
- Turn JxlFrameDimensions into a sealed class
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  cb364fa
- Implement CreateFlatHistogram
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- Add ANS entropy structs
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- Prefer byte for enums
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- Implement ANS entropy helpers
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- Add bit-stream reader
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- Avoid 'using static'
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  25e41da
- Simplify
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  4ec9b95
- Add ANS VarLen & histogram parser
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  b716d4e
- Fix memory leaks
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  1381def
- Don't use end of stream singleton
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  8ffb41a
- Add ANS hybrid uint configuration & LZ77 parameters model
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- Implement Lehmer codes
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- Implement noise shared logic
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- Add alpha blending
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Commits on Jul 17, 2026
- Move AC strategy & Coefficients stuff into Processing
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  289fecd
- Add symmetric weights; fix broken using
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  b15c190
- Add separable weights
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  b3023f2
- Add DCT scales
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  73c7cec
- Add DCT memory, make JxlImage3<T> implement IDisposable
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  7223d98
- Implement signed packing
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Commits on Jul 18, 2026
- Add loop filter
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  446e4a5
- Fully implement JPEG XL fields
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  decc0b2
- Implement visitor for JxlBitDepth
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  a6a0263
- Add matrices
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  6aa313f
- Fix errors
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  d401b71
- Add Y'Cb'Cr chroma subsampling as part of the frame header
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Commits on Jul 19, 2026
- Add frame header
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  16c55f3
- Move Metadata folder to IO
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Commits on Jul 20, 2026
- Add quantizer
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- Fix memory leak
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- Add opsin inverse parameters, some quantizer weight work
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Commits on Jul 21, 2026
- Move, add entropy coding common functions
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  2758454
- Remove aggressive inlining attributes, fix usings
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  6eda7e2
- Use distinct read-only spans
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  f71bab2
- Add CFL
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Commits on Jul 22, 2026
- Add Huffman common methods
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  9c6b4ef
- Start work on Butteraugli
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Commits on Jul 24, 2026
- Implement Butteraugli core functions
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Commits on Aug 1, 2026
- Add CMS* prototype, XYB decoding, TOC, convolution and coefficient ordering
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  0d159b9
- Use inline arrays in quantizer
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  083385b
- Prefer const
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  a1cae71
- Don't use System.Diagnostics.Debug
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Commits on Aug 6, 2026
- Add Move to Front transform
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  79e8ce7
- Prefer inline arrays
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  d1f6646
- Prevent potential overflow
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  fe41799
- Refactor
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  8209aa1
- Validate the size parameter in JxlCoefficientOrder.ReadPermutation
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Commits on Aug 8, 2026
- Add more implementations and prototypes
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- Add image copy operations
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  ff98ffd
- Implement image operations
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  e718a4a
- Reduce number of errors
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  048945c
- Implement JPEG XL numerics functions & reduce errors
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  4f71c52
- Add rectangle support to images
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  4d0a468
- Document JxlPlane<T> and JxlPlaneBase
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  2c517a2
- Add passes decoder state prototype & reduce errors in JxlQuantizedSpline
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  50813c1
Commits on Aug 12, 2026
- Add DCT, transpose, and performance improvements
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  27a848c
- Remove GC.SuppressFinalize(this)
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  0d9aea4
- Add image bundle
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  20e3a34
- Use inline arrays in Butteraugli
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Commits on Aug 13, 2026
- Merge branch 'SixLabors:main' into jxl-support
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Commits on Aug 15, 2026
- First prototype of JxlDecoderCore
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Commits on Aug 17, 2026
- Add JPEG XL container prototype & file type box
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Commits on Aug 18, 2026
- Zero-copy input access (prototype 1)
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- Performance improvements
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- Zero-copy input access (prototype 2)
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- Zero-copy input access (prototype 3)
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Commits on Aug 24, 2026
- Add prototype of modular
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- Merge branch 'SixLabors:main' into jxl-support
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  e449656
- Reduce errors in AC strategy code
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- Reduce errors
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- Reduce errors, remove unused constant
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  352b14d
- Finish inverse RCT
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- Complete RCT
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  c5a7bb8
- Simplify decoder core & add palette shared methods
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  c8b0a5d
- Add missing types, rename JxlBitDepth metadata to JxlBitDepthMetadata, reduce errors in JxlDecoderCore
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  c079cf9
- Add CodestreamMarker, don't manually check for out-of-bounds
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  7e23670
- Reduce errors
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  b8f4094
- Simplify
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Commits on Aug 25, 2026
- Add box content decoder with Brotli compression & reduce errors
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- Reduce errors & refine documentation
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  315ea0f
- Reduce errors & remove unnecessary if statements
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  57958f3
- Add missing types, reduce errors
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  0678f35
- Quantizer improvements, reduce errors
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  4118c4a
- Complete quantizer encoding
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Commits on Aug 31, 2026
- Complete modular transforms, context prediction
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  acc474e
- Don't use stackalloc for two bytes
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  7b8749d
- Prefer Math.DivRem
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  15c32fe
- Use Math.DivRem
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  de8c644
- Prefer byte
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  a5d5ab6
- Don't use GetWReference (it should return span)
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  1b6e824
- Parenthesize
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  c6c6942
- Don't use stackalloc
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  79b0113
- Remove SuppressFinalize from sealed class
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  e7d3608
- Use Math.Clamp
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  e6ed4ba
- Use StartsWith
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  4858ef3
- Remove try/finally
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- Add JPEG parsed data
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- Use InlineArray for color correlation
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- Add JPEG data constants
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Commits on Sep 1, 2026
- Update folder structure
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  497c27c
- Add JPEG parser for JXL<->JPEG conversion
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  4b9a74d
- Refactor & optimize
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  bc7e30e
- Optimize
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- Make interface an abstract class
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Commits on Sep 2, 2026
- Add encoder ANS SIMD bit cost estimation
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  fad73d8
- Add huffman encoder, inverse Gaborish transform, gamma correction, noise encoder tools, and complete render pipeline EPF 0 stage
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  64bade8
- Refactor, optimize
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  8345623
- Complete Edge Preserving Filter render pipeline stages
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  4116e9c
- Optimize JxlNoiseHistogram
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  5874c4c
- Further update folder structure, start working on write to output stage (incomplete)
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  5f99a65
- Add IJxlImageOutput
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  9ad0210
- Add ShouldFlip methods, fix typo
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  eead4a9
- Add Y'Cb'Cr stage, make Epf1Stage class sealed
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- Use primary constructor
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  9f3ccfa
- Add Gaborish stage
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- Add patch dictionary stage
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- Partial adaptive quantizer encoder
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  e0305d7
- Add JxlToJpegDecoder static methods
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  5de2701
- Add 3 missing methods to JxlFrameDecoder, add spline and spotcolor render pipeline stages
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Commits on Sep 3, 2026
- Add a few CMS transfer functions (incomplete)
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- Add SIMD float->Half conversion
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  7880fb2
- Add photon noise encoder
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  5fe70ba
Commits on Sep 4, 2026
Commits on Sep 5, 2026
- Refactor, add MA encoding (decoder-only), finish quantization weights, add bits tests
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Commits on Sep 6, 2026
- Add MA encoder
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  5653d39
- Add modular encoder
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  d658ded
- Add MA decoder
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  148764c
- Complete core modular functions
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  412693e
- Add PQ transfer function
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  649034b
- Remove double emptyline
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  f2ccbac
- Merge HLG base/derived class into one; abbreviate transfer function class name
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Commits on Sep 7, 2026
Commits on Sep 8, 2026
- Add JPEG parser
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- Add JPEG writer (incomplete)
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  aaf4d1a
- Add transforms decoder, some ANS encoder work
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  fdba3ee
- Blank transforms encoder
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  06598ee
- Add fields tests
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  5b8cd17
- Add encoder image comparators
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  0520ab3
- Mark transforms encoder as TODO
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  0c2c3a1
- Refactor
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  ec32e42
- Add context map decoder
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  b058eba
Commits on Sep 9, 2026
- Remove SIMD vectors from FJXL, add some ANS symbol reader work
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- Add SimdUtils.Lzcnt
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Commits on Sep 10, 2026
- Add some FJXL work
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- Add coeff order encoder
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- Implement remaining SIMD utils in JXL
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  e81085c
- Add TOC encoder
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  1a23a1a
- Add JPEG XL optimize
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- Add progressive split
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- Implement field visitor for metadata
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Commits on Sep 11, 2026
- Finish JXL->JPEG decoder, split codestream-processing work (incomplete), add tests (incomplete), add compressed DC (incomplete), update folder structure
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  d43064b
- Add reinterpreting IDCT
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Commits on Sep 12, 2026
- Add transforms encoder
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  82d8bbd
- Add quantizer weights encoder
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Commits on Sep 14, 2026
- Add group decoder
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  1692623
- Apply optimizations
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  4d3c02f
- Convert into switch statement
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  d45edc4
Commits on Sep 16, 2026
- Add FJXL and LZ77 progress
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  86e0ae0
- Delete fast lossless codec
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  0a04b34
- Revert "Delete fast lossless codec"
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  58c68d0
- Remove lossless codec implementation
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  25eae36
- Add adaptive quantization progress
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  afbed06
Commits on Sep 17, 2026
- Add adaptive quantization encoder
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  7fda906
- Add scalar tone mapping
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  ca00838
- Complete CMS tone mapping
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  committed
  8def552
- Complete compressed DC
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  36749c5
- Add optimizations
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  f109219
- Add external image encoder
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  9804b7c
- Complete image bundle encoder
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  55b8da8
Commits on Sep 18, 2026
- Add chroma upsampling stages
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  255c892
- Add from linear stage
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  d23651f
- Add to linear stage
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  committed
  d75b412
- Add noise stages
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  5953b9e
- Complete write to output stages
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  committed
  dcb3a3a
Commits on Sep 23, 2026
- Add dot dictionary, dot detection, incomplete modular frame decoder, blank upsampling stage, new tests
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  684cb90
- Add context map encoder
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  0898988
Commits on Sep 29, 2026
- Add cluster encoder, complete heuristics FindBestBlockEntropyModel, add tone mapping stage, add entropy encoder, add performance optimizations
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  19a459a
Commits on Sep 30, 2026
- Complete patch dictionary
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  f35e91b
Commits on Oct 11, 2026
- Implement multiple codec components
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  17845fc
- Create group encoder
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  e9fe890
- Add constants and lookups in group encoder
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  committed
  fde4550
Commits on Oct 12, 2026
- Finish ANS decoder, implement upsampling stage constructor, make CustomTransformData inline array fields public, remove unnecessary usings from noise decoder, document JxlAnsHelper
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  0cebb94
Commits on Oct 15, 2026
- Add AdjustQuantBlockAC to group encoder
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  b0f8ab8
- Complete chroma from luma encoder
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  3d9978d
- Formatting
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  f894269
- Add group decoder cache
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  1c4ec00
Commits on Oct 16, 2026
- Implement additional AC strategy encoder functions
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  committed
  135c271
- Finish AC strategy encoder
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  committed
  842276e
- Add QuantizeRoundtripYBlockAc to group encoder
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  committed
  1554eef
- Complete group encoder
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  5a944e2
- Remove unused namespace
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  58e3bb7
Commits on Oct 18, 2026
- Partial ANS encoding histogram
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  committed
  6a2ea7f
- Add kernels to heuristics
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  committed
  513abd1
- Add image upsampling
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  committed
  15c0b1d
- Init modular encoder
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  committed
  367851e
- Add lookups & constants used by modular frame encoder
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  committed
  8166abc
- Add a few modular frame encoder functions
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  committed
  54f7acd
- A few more modular frame encoder functions
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  committed
  1f90cac
- Complete LZ77 encoder
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  committed
  056a6d5
Commits on Oct 19, 2026
- Complete Jpeg Huffman decoder
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  committed
  c19c7b9
- Don't split JxlDecoderCore; rename it to JxlDecoderInternal
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  committed
  bdd4ac0
- Complete noise encoder, add methods for decoder internal tests
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  5c1dd40

Commits

Commits on Jul 14, 2026

Commits on Jul 15, 2026

Commits on Jul 16, 2026

Commits on Jul 17, 2026

Commits on Jul 18, 2026

Commits on Jul 19, 2026

Commits on Jul 20, 2026

Commits on Jul 21, 2026

Commits on Jul 22, 2026

Commits on Jul 24, 2026

Commits on Aug 1, 2026

Commits on Aug 6, 2026

Commits on Aug 8, 2026

Commits on Aug 12, 2026

Commits on Aug 13, 2026

Commits on Aug 15, 2026

Commits on Aug 17, 2026

Commits on Aug 18, 2026

Commits on Aug 24, 2026

Commits on Aug 25, 2026

Commits on Aug 31, 2026

Commits on Sep 1, 2026

Commits on Sep 2, 2026