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effectcraft/crates/psd
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Brandon Thomas 94e1c86d89 IO-2/SHP-5/PRV-2: PSD import, SVG import + vector/text conversions, persistent disk cache 
- effectcraft-psd (L1): PSD/PSB reader from Adobe's published file format spec (layers, groups,
  masks, blend modes, text engine data, lfx2 effects, fill/adjustment layers, vector masks;
  1/8/16/32-bit, RGB/CMYK/Gray/Lab/Indexed, raw/RLE/ZIP) and a minimal writer for fixtures.
- File > Import: importAs footage|composition|compositionLayerSizes, layer (Choose Layer);
  groups -> precomps (pass-through collapses), text -> editable text, styles -> Layer Styles,
  adjustments -> adjustment layers with effects; UI asks the Import Kind for Photoshop files.
- effectcraft-svg (L2): SVG parser (shapes, paths, transforms, use, CSS, gradients) and
  rasteriser; .svg imports as footage, continuously rasterised when the switch is on.
- layer.create: shapesFromVector, shapesFromText, masksFromText, editableText (stub removed).
- Disk cache (render::disk_cache): LZ4 content-keyed frames and layer buffers, LRU size limit
  from prefs, atomic writes, restart persistence; edit.purge clears it, cache.diskStats query;
  viewer frames read/write it and the timeline shows disk-only frames in blue.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
 		2026-10-02 22:10:48 -04:00
..
src IO-2/SHP-5/PRV-2: PSD import, SVG import + vector/text conversions, persistent disk cache 2026-10-02 22:10:48 -04:00
Cargo.toml IO-2/SHP-5/PRV-2: PSD import, SVG import + vector/text conversions, persistent disk cache 2026-10-02 22:10:48 -04:00
README.md IO-2/SHP-5/PRV-2: PSD import, SVG import + vector/text conversions, persistent disk cache 2026-10-02 22:10:48 -04:00

README.md

effectcraft-psd

Reads Photoshop documents (.psd, and .psb large documents) for File ▸ Import (as footage, as a composition, or as a composition with layer sizes retained), and writes a minimal subset (used to generate test fixtures).

Implemented from Adobe's public Adobe Photoshop File Formats Specification (November 2019 edition): file header, colour mode data, image resources, layer and mask information (layer records, channel image data, layer mask data, additional layer information: luni, lsct/lsdk, lyid, iOpa, TySh, lfx2, SoCo, nvrt, brit, hue2, levl, expA, vmsk/vsms, Lr16/Lr32), the descriptor (action) structure, and the merged image data. Raw, RLE (PackBits) and ZIP (with and without prediction, inflated with miniz_oxide) compression; 1/8/16/32-bit; Bitmap, Grayscale, Indexed, RGB, CMYK (naive conversion) and Lab colour modes.

Text engine data (EngineData) is read best-effort for the font, size, fill colour and justification of the first style run. No Adobe code, sample files or assets were used; test fixtures are generated in-test by the writer in this crate (write).