WebAudio: MediaStreamAudioDestinationNode has no outputs

Category: Multimedia
Type: New or changed feature
Status: Enabled by default (Chrome 76)
Intent stage: Evaluate readiness to ship

Breaking change: No
Enterprise impact: None
Spec maturity: Incubation
Web Platform Tests: No

WPT details: Chrome has two tests for this and one does not depend on Chrome-specific features. The general test will be moved to WPT.

Summary

According to the specification, the MediaStreamAudioDestinationNode in WebAudio should have no outputs. Chrome's implementation has a single output which will be removed.

Motivation

Standards & signals

Specification: https://webaudio.github.io/web-audio-api/#mediastreamaudiodestinationnode
Firefox: Shipped/Shipping — Output count is 0 in 60.6.1esr. Probably much earlier.
Safari: No signal
Web developers: No signals
Tracking bug: https://crbug.com/691806

Ecosystem

Web Platform Tests: https://wpt.fyi/results/?q=webaudio-mediastreamaudiodestinationnode-has-no-outputs
Chrome Platform Showcase: https://chrome-platform-showcase.paulkinlan-ea.deno.net/features
GenDN reference: https://gendn.paulkinlan-ea.deno.net/features
chrome.dev demos search: https://www.google.com/search?q=site%3Achrome.dev+WebAudio%3A%20MediaStreamAudioDestinationNode%20has%20no%20outputs
MDN Web Docs: https://developer.mozilla.org/en-US/search?q=WebAudio%3A%20MediaStreamAudioDestinationNode%20has%20no%20outputs
Baseline status: https://webstatus.dev/?q=WebAudio%3A%20MediaStreamAudioDestinationNode%20has%20no%20outputs

Docs: https://webaudio.github.io/web-audio-api/#mediastreamaudiodestinationnode

View on chromestatus.com