wai: ingest the browser capability-negotiation mapping (WebCodecs)

dcharlot commented

2026-08-03 06:09:26 -04:00

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SOTA ingest: WAI's §4 dispatch is the browser's own capability primitive — WebCodecs isConfigSupported(), whose documented fallback is a WASM decoder. New extensions/webcodecs-negotiation.md maps §4's advertises-cap test onto a two-tier browser resolution (native via isConfigSupported, WAI's pure-integer wasm decoders as the always-satisfiable fallback), documenting what the live /jpegai and /int_hyper sinks already do. Referenced from SPEC §4. Docs only, self-referential.

Co-Authored-By: Claude Opus 4.8 noreply@anthropic.com

SOTA ingest: WAI's §4 dispatch is the browser's own capability primitive — WebCodecs isConfigSupported(), whose documented fallback is a WASM decoder. New extensions/webcodecs-negotiation.md maps §4's advertises-cap test onto a two-tier browser resolution (native via isConfigSupported, WAI's pure-integer wasm decoders as the always-satisfiable fallback), documenting what the live /jpegai and /int_hyper sinks already do. Referenced from SPEC §4. Docs only, self-referential. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

dcharlot added 1 commit

2026-08-03 06:09:26 -04:00

wai: ingest the browser capability-negotiation mapping (WebCodecs)

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SOTA ingest: WAI's §4 dispatch — declare a capability, decode it if advertised,
else fall back — is the exact shape of the browser's own media-capability
primitive, WebCodecs isConfigSupported(), whose established fallback when a config
isn't supported is a WebAssembly decoder. That is WAI's two-tier design already.

New extensions/webcodecs-negotiation.md formalizes it: a browser sink answers §4's
"advertises cap" with isConfigSupported() for the native tier (mapping the floor +
menu codecs to VideoDecoder/AudioDecoder/ImageDecoder), and WAI's pure-integer wasm
decoders as the always-satisfiable fallback — the tier the neural/computed
capabilities (wai.image.jpegai, wai.neural.int_*, …) live in, decoding byte-exact
in-browser (decode-equivalence), and where the classical floor stays always
reachable. It documents what the live /jpegai and /int_hyper sinks already do.
Referenced from SPEC §4; changelog entry. Informative, self-referential — WAI adds a
named capability and a guaranteed wasm floor to the browser's own pattern.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

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