wai-web: full JPEG-AI decode in wasm (decodeJpegAiFull) — re-land #59
2026-08-24
wai-web: full JPEG-AI codestream→RGB decode in wasm (decodeJpegAiFull)
The whole byte-exact decoder (wai::jpegai_decode::decode) as a browser entry: 13 byte inputs (codestream + the model weight bundle from wai_jpegai_build_e2e_inputs.py + norm tables), returns the decoded RGB. Same integer decoder a native sink runs, compiled to wasm32. Verified in node: decodes test256 to 256x256 in ~8s and the RGB is byte-identical to the native decode (sha256 dbc494a5…, the same digest the reconstruction-binding test produced natively) — decode-equivalence across host and browser. The JS side passes raw bytes; the wasm parses, so there is no JS-side double-parse. Drives the full-image path of the /jpegai demo. Co-Authored-By: Claude Opus 4.8 <[email protected]>