LGTM1, looks a very straightforward and small addition. I see there's no WebKit standards position, but there's a bug, and since this is small, that seems like the right choice.
On Tue, Nov 3, 2026 at 9:49 PM Chromestatus <[email protected]> wrote: > *Contact emails* > [email protected], [email protected] > > *Explainer* > https://github.com/WebAudio/web-audio-api/issues/2456 > https://github.com/WebAudio/web-audio-api/pull/2507 > > *Specification* > https://webaudio.github.io/web-audio-api/#dom-audioworklet-port > > *Design docs* > > https://developer.mozilla.org/docs/Web/API/AudioWorkletGlobalScope/port > > *Summary* > Exposes a shared MessagePort on AudioWorklet and AudioWorkletGlobalScope. > This lets web applications communicate directly between the main thread > AudioWorklet and the AudioWorkletGlobalScope without creating a bootstrap > AudioWorkletProcessor only for message passing. > > *Blink component* > Blink>WebAudio > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWebAudio%22> > > *Web Feature ID* > audio-worklet <https://webstatus.dev/features/audio-worklet> > > *Motivation* > The Web Audio specification defines a shared MessagePort on AudioWorklet > and AudioWorkletGlobalScope. This lets web applications communicate > directly between the main thread and the AudioWorkletGlobalScope without > creating a bootstrap AudioWorkletProcessor or AudioWorkletNode only for > message passing. Without this capability, developers have to keep > workaround code that instantiates dummy processors solely to transfer > initialization data or control messages into the worklet global scope. This > adds code complexity and runtime overhead, and prevents cleanup of > compatibility hacks in upstream projects. This change aligns Chromium with > the current Web Audio specification and existing interoperable behavior. It > also restores compatibility for real-world code that expects > audioContext.audioWorklet.port to exist, including Emscripten-generated > applications and demos such as the MOD player discussed in the linked > issue. Relevant specification and ecosystem discussion: - > https://github.com/WebAudio/web-audio-api/issues/2456 - > https://github.com/WebAudio/web-audio-api/pull/2507 - > https://github.com/emscripten-core/emscripten/pull/25354 > > *Initial public proposal* > *No information provided* > > *TAG review* > N/A - Small additive WebAudio change that already shipped in Firefox 138. > > *TAG review status* > Not applicable > > *Goals for experimentation* > None > > *Risks* > > > *Interoperability and Compatibility* > Low Risk. This feature adds a readonly port attribute to existing > AudioWorkletGlobalScope and AudioWorklet. This feature has been defined in > the WebAudio Spec ( > https://www.w3.org/TR/webaudio-1.1/#dom-audioworkletglobalscope-port) and > has already shipped in Firefox 138. > > *Gecko*: Shipped/Shipping ( > https://developer.mozilla.org/en-US/docs/Web/API/AudioWorkletGlobalScope/port) > Shipped > in Firefox 138 > > *WebKit*: No signal (https://bugs.webkit.org/show_bug.cgi?id=299386) > > *Web developers*: Positive ( > https://github.com/emscripten-core/emscripten/pull/25354) > > *Other signals*: > > *WebView application risks* > > Does this intent deprecate or change behavior of existing APIs, such that > it has potentially high risk for Android WebView-based applications? > No risk. Does not change WebView behaviour. Adds MessagePort to existing > WebAudio API in AudioWorklet and AudioWorkletGlobalScope. > > > *Debuggability* > AudioWorkletGlobalScope.port and AudioWorklet.port are standard > MessagePort instances and can be inspected via existing DevTools console > and script break points. > > *Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, ChromeOS, Android, and Android WebView)?* > Yes > > *Is this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* > Yes > > https://wpt.fyi/results/webaudio/the-audio-api/the-audioworklet-interface/audioworklet-messageport.https.html > > *Flag name on about://flags* > enable-experimental-web-platform-features > > *Finch feature name* > AudioWorkletSharedPort > > *Rollout plan* > Will ship enabled for all users > > *Requires code in //chrome?* > False > > *Tracking bug* > https://issues.chromium.org/issues/446920095 > > *Estimated milestones* > Shipping on desktop 159 > Shipping on Android 159 > Shipping on WebView 159 > > *Anticipated spec changes* > > Open questions about a feature may be a source of future web compat or > interop issues. Please list open issues (e.g. links to known github issues > in the project for the feature specification) whose resolution may > introduce web compat/interop risk (e.g., changing to naming or structure of > the API in a non-backward-compatible way). > Already part of W3C WebAudio > https://www.w3.org/TR/webaudio-1.1/#dom-audioworkletglobalscope-port > > *Link to entry on the Chrome Platform Status* > https://chromestatus.com/feature/5079784523694080?gate=5773264841474048 > > *Links to previous Intent discussions* > Intent to Prototype: > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/69cca30d.050a0220.219f27.0c37.GAE%40google.com > > > This intent message was generated by Chrome Platform Status > <https://chromestatus.com>. > > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6aea48de.e5ec2bf0.2ba4f6.01b9.GAE%40google.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6aea48de.e5ec2bf0.2ba4f6.01b9.GAE%40google.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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