ImageSharp

Commit Graph

Author	SHA1	Message	Date
winscripter	490f02f080	Add ANS entropy structs Add JxlAnsEntry and JxlAnsSymbol. See ans_common.h. These correspond to the Entry and Symbol structures within AliasTable.	2 months ago
winscripter	528149fc1c	Implement CreateFlatHistogram See ans_common.h	2 months ago
winscripter	cb364fa4e9	Turn JxlFrameDimensions into a sealed class It is too large for a struct.	2 months ago
winscripter	396cd8d2cb	Implement JxlAnsHelper.GetPopulationCountPrecision See ans_common.h	2 months ago
winscripter	1e40482cf5	Start work on ANS entropy Implemented ANS constants	2 months ago
winscripter	90680b70c1	Prefer the term "coefficient"	2 months ago
winscripter	064376a9f2	Add quantized spline implementations	2 months ago
James Jackson-South	3d3f49fab8	Refine alpha conversion and AOT seeding Introduce explicit associated/unassociated pixel conversion APIs across `IPixel` and `PixelOperations`, and rework associated-alpha operations to use representation-aware bulk hooks. Update pixel implementations, converters, blenders, and generated code to consistently apply `Premultiply`/`UnPremultiply` semantics, plus SIMD-backed conversion paths for half and signed formats. Fix codec and processing behavior where alpha handling was incorrect or lossy (notably TIFF/EXR decode/encode, convolution/resize/filter/normalization/dithering paths), and add targeted tests for these cases. Expand AOT compiler roots (including EXR and additional pixel/processor coverage), add a new public API test project for pixel-operations extensibility, and add broad alpha-representation and quantization regression coverage.	2 months ago
winscripter	9b58f4b9d5	Implement spline abstractions Implementation of spline.h	2 months ago
winscripter	85812226b6	It's Jxl not Jpeg	2 months ago
winscripter	ac1c866e5a	Add xorshift implemetation	2 months ago
winscripter	487410e55f	Implement field encodings, move IJxlFields This is an implementation of field_encodings.h. Note that I avoided implementing EnumValid() and Values() functions, as we have dedicated methods in .NET to do exactly that (Enum.IsDefined, Enum.GetValues)	2 months ago
winscripter	762edd1ec1	Add headers & aspect ratio helpers	2 months ago
winscripter	6fea920e7f	Add metadata models	2 months ago
winscripter	21ff33f23c	Implement image and memory buffers Implementation of image.h and image.c; AC strategy implementation was slightly adjusted to reduce errors.	2 months ago
winscripter	31b5505d89	Implement JxlMemoryManager For now JxlMemoryManager will be a wrapper around MemoryPool<T>.	2 months ago
winscripter	1ac6140535	Implement AC strategy Implementation of ac_strategy.h and ac_strategy.c	2 months ago
James Jackson-South	4b07920c7c	Fix alpha association and SIMD rounding parity Refactors `Color` to track both exposed and stored alpha representations, adds `ToScaledVector4(PixelAlphaRepresentation)`, and adjusts pixel conversion paths so associated formats preserve canonical values without unnecessary unpremultiply/reassociate loss. This also updates equality/hash behavior to compare canonical scaled values. SIMD helpers are split into `MultiplyAddEstimate` vs `FusedMultiplyAdd`, with byte-to-float normalization updated to match scalar rounding exactly across vector widths. JPEG converters, resize kernels, and Porter-Duff/associated-alpha blending paths were updated to use the appropriate helper for either fast estimate or strict fused rounding semantics. Tests were expanded substantially (including exhaustive component/alpha cases and fused-order checks), incidental test cleanup was applied, benchmark comment snapshots were refreshed, and one black/white reference output image was updated.	2 months ago
James Jackson-South	c4683902a4	Add associated-alpha pixel formats Introduce Rgba32P, Bgra32P, Argb32P, Abgr32P, NormalizedByte4P, and HalfVector4P. Add representation-aware scalar and bulk conversions, optimized pixel operations, and associated-alpha blending across all Porter-Duff modes. Include comprehensive conversion, layout, blending, and performance coverage.	2 months ago
winscripter	d87178fd37	Implemented frame_dimensions.h plus part of ac_strategy.h	2 months ago
winscripter	996e93dba2	Implement ac_context.h	2 months ago
winscripter	85c851b137	Add JPEG XL format	2 months ago
James Jackson-South	0b685ab034	Fix convolution sampling for bounds smaller than the kernel radius KernelSamplingMap.CorrectBorder sliced the offset span by radius * kernelSize, so bounds narrower than the kernel radius threw ArgumentOutOfRangeException (GaussianBlur of a 130x8 region with sigma 10, for example), and bounds exactly equal to the radius let Bounce offsets escape the sampling range by folding an overshoot of a full extent to min - 1. Route bounds no larger than the radius through an exact per-mode correction that folds each offset into range: clamp for Repeat, periodic reflection for Mirror and Bounce, and true modulo for Wrap. The single-pass corrections are unchanged for larger bounds.	2 months ago
James Jackson-South	eb4bfc95ea	Add BlendWithCoverage overloads. Optimize Rgba32 compatible shuffling.	2 months ago
Erik White	5472d6918a	Use FeatureTestRunner for all instruction sets	3 months ago
James Jackson-South	e5ca2782e6	Fix GIF transparency handling and dither	3 months ago
Erik White	47678c748d	Use single buffer for shuffle bytes	3 months ago
Erik White	3b37d5552d	Remove redundant floor. Float to int conversion will already truncate toward zero	3 months ago
Erik White	49dc1951db	Fix read stream byte read semantics	3 months ago
Erik White	e6f09d6616	Use constant or static values where possible	3 months ago
Erik White	9dfc0ca044	Remove unnecessary instruction set check	3 months ago
Erik White	a68921cac3	Break out cgbi helper methods	3 months ago
Erik White	fdc15d283e	Separate Zlib header validation fom stream reading	3 months ago
Erik White	29ae5f8409	Guard CgBI bit depth and color type	3 months ago
James Jackson-South	a3e9cc6fd4	Fix in-place shuffles and vectorize PNG CgBI transform	3 months ago
Erik White	4f85600cb8	Improve ApplyCgbiTransform	3 months ago
Erik White	3e843a06a2	Implement CgBI support	3 months ago
James Jackson-South	8e6cab957b	Validate PBM max pixel value	3 months ago
James Jackson-South	8f2716b567	GIF: background handling & quantizer overflow fix (#3133 ) * GIF: background handling & quantizer overflow fix * Fix tests	3 months ago
James Jackson-South	ff36e83c74	Add AllocationTrackedMemoryManager and refactor allocators (#3120 ) * Add AllocationTrackedMemoryManager and refactor allocators * Add AllocationTrackingState and refactor tracking * Cleanup * Address feedback * Introduce ApplyOptions and use in allocators * Propagate allocation tracking to lifetime guards * Address Copilot feedback * Fix multi-buffer group tracking and enforce limits * Potential fix for pull request finding Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com> * Fix override accesibility --------- Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>	4 months ago
Sven Claesson	c795d81404	Fix integer overflow and bounds-checking vulnerabilities in EXR decoder (#3126 ) * Fix integer overflow and bounds-checking vulnerabilities in EXR decoder Use ulong arithmetic in CalculateBytesPerRow and block size calculations to prevent integer overflow. Add validation for DataWindow dimensions, block size limits, and row offsets outside stream bounds. * Harden EXR row offset validation * EXR: validate sizes, prevent overflows, dispose image --------- Co-authored-by: James Jackson-South <james_south@hotmail.com>	4 months ago
James Jackson-South	1e65e08fc1	Add additional unit tests to improve code coverage. Update licensing version	4 months ago
Brian Popow	c1de5b61d3	Fix mistake in inflateStream.AllocateNewBytes: Use compressedBytes instead of uncompressedBytes	4 months ago
James Jackson-South	37f534ea5d	Add ImageFrame visitor; use Buffer2D Size/Bounds + expose subregion extensions	4 months ago
Brian Popow	7ad873aaf3	Fix stylecop warnings	4 months ago
Brian Popow	2bf2e95638	Move rowsPerBlock to base compression class	4 months ago
Brian Popow	a85fe63d31	Move undoing zip compression into base class	4 months ago
Brian Popow	e917fd317a	Fix issues with pxr and pixel type uint and float	4 months ago
Brian Popow	95ee73e241	Implement pxr decompression for pixel type uint and float	4 months ago
Brian Popow	344d49d86f	Use Width Property from ExrBaseDecompressor	4 months ago

... 2 3 4 5 6 ...

9394 Commits (497c27c0d71c8f764a7f04d36fa8dcc2eb084e0e)