Intent to Ship: DisplayMediaStreamConstraints.surfaceSwitching

[Elad Alon]

Contact emails

elad...@chromium.org

Explainer

https://docs.google.com/document/d/1kqdLoUcwWe8znVCMXyz2FHk9WMylHbIo7gUjhyHmY_w/edit?usp=sharing

Specification

https://github.com/w3c/mediacapture-screen-share/pull/225/files

Summary

Programmatically control whether Chrome exposes a button that allows quickly switching which tab is screen-shared.

Blink component

Blink

TAG review

https://github.com/w3ctag/design-reviews/issues/744

TAG review status

Pending

Risks

Interoperability and Compatibility

Gecko: Positive (https://github.com/mozilla/standards-positions/issues/653) Jan-Ivar Bruaroey from Mozilla, and Youenn Fablet from Apple, have both collaborated with us closely in shaping this PR. They have then approved merging this PR into w3c/mediacapture-screen-share. This is implicit support, so I'd consider it POSITIVE even though, as of the time of this writing, the official request for position has not yet been answered.

WebKit: Positive (https://lists.webkit.org/pipermail/webkit-dev/2022-June/032305.html) Jan-Ivar Bruaroey from Mozilla, and Youenn Fablet from Apple, have both collaborated with us closely in shaping this PR. They have then approved merging this PR into w3c/mediacapture-screen-share. This is implicit support, so I'd consider it POSITIVE even though, as of the time of this writing, the official request for position has not yet been answered.

Web developers: No signals

Other signals:

Ergonomics

N/A

Activation

N/A

Security

N/A

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?

N/A

Debuggability

N/A

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?

No. It is supported on all platforms that support getDisplayMedia. Namely, all desktop platforms.

Is this feature fully tested by web-platform-tests?

No

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1337019

Estimated milestones

No milestones specified

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5067650299330560

Links to previous Intent discussions

Intent to prototype: https://groups.google.com/a/chromium.org/g/blink-dev/c/2wBykF4dgz8

This intent message was generated by Chrome Platform Status.

[Elad Alon]

Hello Blink owners. I know that this is a bit early, as TAG has not yet responded, and the official requests for positions have not had enough time for an official response. I will ping this thread when it's time. (I wanted to get some of the technical prerequisites out of the way before going on extended vacation, so that I may just ping this thread while on vacation.)

[Elad Alon]

For the record, Firefox has now formally set their position as non-harmful. See here.

[Chris Harrelson]

LGTM1

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[Yoav Weiss]

LGTM2

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[Daniel Bratell]

LGTM3

/Daniel

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[Joe Medley]

When do you hope to ship?

Joe Medley | Technical Writer, Chrome DevRel | jme...@google.com | 816-678-7195

If an API's not documented it doesn't exist.

LGTM2

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[Elad Alon]

When I have an exact date, I will update ChromeStatus and ping this thread with the target. Currently, I only know that it will be before EoY, but no earlier than August.

[Elad Alon]

This is shipping in m107. (Thank you François Beaufort for implementing!)