ImageSharp

Commit Graph

Author	SHA1	Message	Date
James Jackson-South	2ffa9fb07b	Add binary16 pixel formats and scaling fixes Introduces `RgbaHalf` and `RgbaHalfP` plus bulk pixel-operation support, updates AOT seeding, and routes EXR decoding through the new scaled conversions. Also fixes scaled/native range handling for half, SNORM, and signed integer pixel formats, and expands tests for the new layouts and edge cases.	1 day 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 days 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.	3 days 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.	4 days 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.	1 week ago
James Jackson-South	eb4bfc95ea	Add BlendWithCoverage overloads. Optimize Rgba32 compatible shuffling.	1 week ago
James Jackson-South	e5ca2782e6	Fix GIF transparency handling and dither	1 month ago
James Jackson-South	a3e9cc6fd4	Fix in-place shuffles and vectorize PNG CgBI transform	2 months ago
Erik White	5d206ec10f	Add test data for RGB24	2 months ago
Erik White	70a49b1d9d	Add tests for Identify	2 months ago
Erik White	3e843a06a2	Implement CgBI support	2 months ago
James Jackson-South	8e6cab957b	Validate PBM max pixel value	2 months ago
James Jackson-South	8f2716b567	GIF: background handling & quantizer overflow fix (#3133 ) * GIF: background handling & quantizer overflow fix * Fix tests	2 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>	2 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>	2 months ago
James Jackson-South	1e65e08fc1	Add additional unit tests to improve code coverage. Update licensing version	2 months ago
James Jackson-South	37f534ea5d	Add ImageFrame visitor; use Buffer2D Size/Bounds + expose subregion extensions	3 months ago
Brian Popow	7d38e50d3f	Use better test image for float pixel type created with reference encoder	3 months ago
Brian Popow	e8c9d6db9d	Add test case for pxr compression with pixel type uint	3 months ago
Brian Popow	efa1f8bbae	Add test case for pxr compression with pixel type float	3 months ago
Brian Popow	d805b9b50c	Add test case for pxr24 compressed image	3 months ago
James Jackson-South	c470a9a05a	Revert "Merge pull request #3056 from SixLabors/js/accumulative-memory-limit" This reverts commit `c5624b534e`, reversing changes made to `b3f37932b6`.	3 months ago
James Jackson-South	66671a0e9f	Implement proper segment integrity handling & tolerant parsing	3 months ago
James Jackson-South	3b1b8956cf	Stop parsing after SOS in JPEG decoder in ProcessStartOfFrameMarker	3 months ago
James Jackson-South	cde366b5cd	Remove premature rounding during normalization	3 months ago
James Jackson-South	dd395e1c03	Enhance metadata conversion	3 months ago
James Jackson-South	f96d28714d	Update ColorNumericsTests.cs	3 months ago
James Jackson-South	6b486e30f1	Fix failing conversion tests	3 months ago
Brian Popow	d98ffac34c	Add test for setting pixel type for encoding exr images	3 months ago
James Jackson-South	656f53d052	Remove not-needed validate method and tests	3 months ago
Brian Popow	af14463b07	Add better test image for uint rgba pixel type	3 months ago
Brian Popow	29f558a801	Add test case for uint pixel type with alpha	3 months ago
Brian Popow	51463a368d	Better test image for uint pixel type	3 months ago
James Jackson-South	ad58e74505	Allow -1 (unbounded) parallelism; validate settings	3 months ago
Brian Popow	e611b1e018	Add tests for Rgba128	3 months ago
James Jackson-South	fd688db0eb	Complete implementation and add tests/benchmark	3 months ago
James Jackson-South	5e4f3ef1ff	Use operators in generated functions	3 months ago
Brian Popow	0ec523f068	Add null check for PixelComponentInfo in Rgb96_PixelInformation()	3 months ago
Brian Popow	d1623fee63	Add tests for Rgb96 pixel conversions	3 months ago
James Jackson-South	c9f7e6ea60	Add ImageInfo.GetPixelMemorySize; docs & tests	3 months ago
James Jackson-South	f0ce591a64	Rename quantizer and update tests	3 months ago
James Jackson-South	90f0c0b5d4	Update and simplify quantization color caches.	3 months ago
Andreas	9569449ac4	Fix MaxFrames handling in PNG decoder - Change >= to > for correct MaxFrames boundary - Skip fdAT chunk data when hitting maxFrames in Identify to maintain stream alignment - Add tests for Identify and Load with MaxFrames	3 months ago
Andreas	a76c02f7c0	Replace test image with a smaller one. Adjusted Identify_AnimatedPng_ReadsFrameCountCorrectly to expect 48 frames instead of 50.	3 months ago
Andreas Eriksson	7b13e1df1b	Add generated animated PNG tests for Identify and Decode frame counts	4 months ago
Andreas Eriksson	ac1905328d	Fix Identify returning incorrect frame count for animated PNGs The Identify method had two bugs when processing fdAT (FrameData) chunks: 1. A spurious Skip(4) before SkipChunkDataAndCrc caused the stream to be misaligned by 4 bytes, since chunk.Length already includes the 4-byte sequence number. 2. Unlike Decode, which consumes all fdAT chunks for a frame in one shot via ReadScanlines + ReadNextFrameDataChunk, Identify processed them individually, calling InitializeFrameMetadata for each chunk and inflating the frame count. The fix removes the extra Skip(4) and adds SkipRemainingFrameDataChunks to consume all continuation fdAT chunks for a frame, mirroring how ReadNextFrameDataChunk works during decoding.	4 months ago
Brian Popow	802e275e8e	Use CompareToReferenceOutput for failing bmp tests on linux	4 months ago
Brian Popow	e6a9980daf	Change expectedDefaultConfigurationCount to 12	4 months ago
Brian Popow	0c3ca3da24	Fix failing bmp tests	4 months ago
Brian Popow	a9f6dbc68b	Add compression to exr metadata	4 months ago

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4783 Commits (2ffa9fb07bd15364cd2c8e52f34666da225d5d85)