# 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`](src/write.rs)).