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vangel76andClaude Opus 5.5
28247afae7
Problem: camera RAW is at 0% (docs/codec-parity.md, #383). CinemaDNG, the one cinema RAW format with a public specification, could not be read at all. Fix: new L0 crate filmcraft-dng, written from the public DNG 1.4-1.7, TIFF 6.0 / TIFF-EP, ITU-T T.81 and CinemaDNG specifications only (no other decoder's source read; editions in the crate README): - TIFF container with SubIFDs, bounded (64 IFDs, 4 levels, cycles end the walk) and checked offsets; the main raw IFD is the largest NewSubFileType 0 CFA / LinearRaw image. - Raw data: 1-16-bit uncompressed (MSB-first packing) and lossless JPEG (process 14, predictors 1-7, 1-4 components, point transform, line restarts), strips and tiles, tiles decoded in parallel; allocations capped by size and by the data present. - Processing per the DNG model: ActiveArea, LinearizationTable, per-site black levels with deltas, white levels, as-shot white balance with neutral highlight clipping, Malvar-He-Cutler Bayer demosaic (bilinear for other patterns), DefaultCrop, ColorMatrix / CameraCalibration / ForwardMatrix with illuminant interpolation, Bradford to linear Rec. 709, BaselineExposure; output scene-linear RGBA floats. - CinemaDNG FrameRate, TimeCodes and ReelName tags. - A test-only writer (feature `writer`) synthesises DNGs. Tests: raw samples bit-exact for every depth / predictor / layout, processing against hand-computed values, hostile files (every truncation, 12k mutations, cyclic IFDs, huge sizes, bad offsets), and LibRaw's unprocessed_raw as an external oracle reading the same samples (skipped when not installed). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
24 lines
602 B
TOML
24 lines
602 B
TOML
[package]
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name = "filmcraft-dng"
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description = "Clean-room DNG / CinemaDNG camera RAW decoder (TIFF container, lossless JPEG, DNG colour pipeline)"
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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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rust-version.workspace = true
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[features]
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default = ["threads"]
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threads = ["dep:rayon"]
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# A small DNG and lossless JPEG writer for synthesising test files (not used by the app).
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writer = []
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[dependencies]
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rayon = { workspace = true, optional = true }
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thiserror.workspace = true
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[dev-dependencies]
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filmcraft-dng = { path = ".", features = ["writer"] }
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[lints]
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workspace = true
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