ImageSharp

Commit Graph

Author	SHA1	Message	Date
James Jackson-South	14ddc15e26	Validate embedded profile extents	1 month ago
James Jackson-South	2b52b55be6	Validate WebP metadata chunk lengths	1 month ago
James Jackson-South	0446ba0d69	Cover large PNG average-filter scanlines	1 month ago
James Jackson-South	ea0475ebd8	Use wide arithmetic for PNG scanline lengths	1 month ago
James Jackson-South	23ed0b0cda	Reject duplicate PNG headers	1 month ago
James Jackson-South	7781fbd879	Validate decoded image dimensions	1 month ago
James Jackson-South	9ee7d1dd5b	Fix tiled CCITT decompressor width handling Use tile width (instead of full image width) when creating T4/T6/Modified Huffman decompressors for tiled TIFF decoding, preventing row-size mismatches and false overrun failures. Also standardize the CCITT overrun error message and add regression coverage for both strip-based and tiled reporter samples that must throw when decoded pixels exceed image width.	2 months ago
James Jackson-South	e8892ecd8a	Guard CCITT runs that exceed row width Adds explicit bounds checks before writing decoded CCITT runs in both T4 and Modified Huffman TIFF decompressors, preventing oversized runs from writing past the current row. Error messages were also standardized/capitalized for CCITT parsing failures. Includes new regression tests using compressed TIFF PoCs to verify decoding now throws ImageFormatException with the expected width-overrun message.	2 months ago
James Jackson-South	8ca712019e	Fix 16-bit binary PBM sample byte order The binary PGM and PPM formats store 16-bit samples most significant byte first. The decoder and encoder read and wrote them in native little-endian order, so every wide sample was byte swapped. This corrects the swizzled colors reported for 16-bit PPM images. - Reverse the sample byte order in BinaryDecoder and BinaryEncoder. - Fix integer division in the max pixel value upscale factor. - Add exact-value, reference-decoder, upscale, and round-trip tests. - Add a 16-bit PPM test image and its Magick-anchored reference PNG. - Document the binary decoder and encoder in full.	2 months ago
James Jackson-South	ed64ea7197	Reject ICO entries at stream-end offset Tightened icon frame bounds validation to treat `ImageOffset == available` as invalid, preventing non-empty resources from starting at the exclusive end of the icon stream. Added a regression test that mutates an ICO directory entry to this boundary value and verifies both `Decode` and `Identify` throw `InvalidImageContentException` with the expected message.	2 months ago
James Jackson-South	eadb2a6c79	Handle oversized ANI chunks and partial icon masks	2 months ago
James Jackson-South	e9aa4bffbb	Address ANI and icon review feedback	2 months ago
James Jackson-South	db5b03d894	Complete ANI, ICO, and CUR codec support	2 months ago
James Jackson-South	043c264aef	Flatten JPEG ICC color conversion	2 months ago
James Jackson-South	1c726da0df	Clean up normalized SIMD pipelines	2 months ago
James Jackson-South	ca126a5f4a	Remove replaced SIMD implementations	2 months ago
James Jackson-South	9d1aa66f67	Normalize PNG filter encoding	2 months ago
James Jackson-South	e9db3675e9	Normalize JPEG color conversion SIMD	2 months ago
James Jackson-South	e2b43407cc	Handle ulong values for EXIF Long writes Fixes EXIF serialization when `ExifLong8Array` downgrades to `ExifDataType.Long` but still stores values as `ulong`. `ExifWriter.WriteValue` now handles `ulong` inputs in the `Long` branch by writing 32-bit values, and a BigTIFF metadata test verifies mixed in-range values are written correctly as two little-endian `uint`s.	3 months ago
James Jackson-South	494d2dd97b	Clone TIFF profiles into image metadata Update TIFF metadata creation to build ImageMetadata after IFD tag processing and copy root-frame EXIF/ICC/IPTC/XMP profiles to image scope via deep clones. This keeps image-level metadata in sync for downstream single-frame encoders while preserving independent mutability between frame and image metadata. Tests now cover preserved ICC handling and verify image-level profile presence, equality, and non-shared instances for EXIF/XMP/IPTC, including ignore-metadata behavior.	3 months ago
James Jackson-South	dfdc0734e3	Validate CgBI chunk order in PNG decoder Handle CgBI chunks consistently when they appear after IHDR by routing both identify/decode paths through a new `ReadCgbiChunk()` method that immediately validates already-read headers. This prevents invalid CgBI images from bypassing compatibility checks when chunk order is unusual. Added PNG tests that reorder the first two chunks to confirm incompatible CgBI headers now throw in both identify and decode flows. Also renames `ZlibInflateStream` to `ZlibInflateReader` and updates EXR/PNG/TIFF call sites for clearer intent.	3 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.	3 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.	3 months ago
Erik White	5472d6918a	Use FeatureTestRunner for all instruction sets	4 months ago
Erik White	fb207199f5	Clean up/clarify test helper method	4 months ago
James Jackson-South	e5ca2782e6	Fix GIF transparency handling and dither	4 months ago
Erik White	a68921cac3	Break out cgbi helper methods	4 months ago
Erik White	29ae5f8409	Guard CgBI bit depth and color type	4 months ago
James Jackson-South	a3e9cc6fd4	Fix in-place shuffles and vectorize PNG CgBI transform	4 months ago
Erik White	5d206ec10f	Add test data for RGB24	4 months ago
Erik White	70a49b1d9d	Add tests for Identify	4 months ago
Erik White	3e843a06a2	Implement CgBI support	4 months ago
James Jackson-South	8e6cab957b	Validate PBM max pixel value	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>	5 months ago
James Jackson-South	1e65e08fc1	Add additional unit tests to improve code coverage. Update licensing version	5 months ago
James Jackson-South	37f534ea5d	Add ImageFrame visitor; use Buffer2D Size/Bounds + expose subregion extensions	5 months ago
Brian Popow	7d38e50d3f	Use better test image for float pixel type created with reference encoder	5 months ago
Brian Popow	e8c9d6db9d	Add test case for pxr compression with pixel type uint	5 months ago
Brian Popow	efa1f8bbae	Add test case for pxr compression with pixel type float	5 months ago
Brian Popow	d805b9b50c	Add test case for pxr24 compressed image	6 months ago
James Jackson-South	66671a0e9f	Implement proper segment integrity handling & tolerant parsing	6 months ago
James Jackson-South	3b1b8956cf	Stop parsing after SOS in JPEG decoder in ProcessStartOfFrameMarker	6 months ago
James Jackson-South	cde366b5cd	Remove premature rounding during normalization	6 months ago
James Jackson-South	dd395e1c03	Enhance metadata conversion	6 months ago
Brian Popow	d98ffac34c	Add test for setting pixel type for encoding exr images	6 months ago
Brian Popow	29f558a801	Add test case for uint pixel type with alpha	6 months ago
James Jackson-South	f0ce591a64	Rename quantizer and update tests	6 months ago
James Jackson-South	90f0c0b5d4	Update and simplify quantization color caches.	6 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	6 months ago
Andreas	a76c02f7c0	Replace test image with a smaller one. Adjusted Identify_AnimatedPng_ReadsFrameCountCorrectly to expect 48 frames instead of 50.	6 months ago

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2318 Commits (14ddc15e26628c4d73c568f02d93548a9ca8eb00)