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Exalted5373andClaude Opus 5.5
90361935ba
heic-rs reconstructs iPhone HEVC tiles bit-exactly (checked against libde265), but its colour stage was 2-27 code values off libheif on every iPhone photo: it ignores the HEVC VUI and assumes BT.709 limited range. lightcraft-heif now converts YCbCr itself (nclx, else VUI, else H.265 defaults; nearest chroma, bilinear for odd clap offsets, as libheif), inherits tile ICC/nclx on grids, follows libheif's imir axis and clap rounding, and outputs 16-bit RGB. Measured on 30 real and synthetic files: within 1 code value of libheif (pillow-heif 1.8 / libheif 1.23). Also: HEIF header reader for import (no pixel decode), embedded thumbnail for small decodes, nclx/VUI colour hint (shared CICP mapping with PNG), clear 4:2:2/4:4:4 Unsupported error, Format::not_decodable as the one source of "why not" (import reports "HEIC/HEIF support isn't included in this build"), `.heif` imports. Release packaging and Nix build with the heif feature, as whats-new promised. lightcraft_heif::testdata writes lossless (PCM) synthetic HEICs for the tests. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
27 lines
1.2 KiB
TOML
27 lines
1.2 KiB
TOML
[package]
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name = "lightcraft-heif"
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description = "Optional HEIF/HEIC still-image decoder for LightCraft (heic-rs for the container and HEVC, libheif-matching colour conversion, panic-guarded)"
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version.workspace = true
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edition.workspace = true
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license.workspace = true
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[dependencies]
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# Pure Rust, no unsafe. Pinned exactly: a young, single-owner crate that parses untrusted files;
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# moving the pin is a reviewed change (re-run the heif tests and the codecs corpus tests).
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# Mirrors PhotoCraft's photocraft-heif (same team, same decision): heic-rs was chosen over the
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# other permissive candidates (heif-oxide's HEVC decoder, rust_h265, follows FFmpeg's (LGPL)
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# code structure; gamut-heic has no HEVC decoder of its own).
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heic-rs = { version = "=0.1.1", default-features = false, features = ["std"] }
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# The tiles of a HEIC photo decode in parallel on native; wasm stays single-threaded.
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[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
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heic-rs = { version = "=0.1.1", default-features = false, features = ["std", "parallel"] }
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rayon = { workspace = true }
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[features]
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# `lightcraft_heif::testdata`: lossless synthetic HEIF files, for the tests of the crates above.
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testdata = []
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[lints]
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workspace = true
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