Thanks for all the context, Elad. Evidence from OT is persuasive here. LGTM1.
On Monday, March 24, 2025 at 2:05:50 AM UTC-7 elad...@google.com wrote: > The remaining open issues are: > > 1. > > Whether the API shape should already support gestures other than > wheel, or whether such a future extension should only be addressed in the > future. > 2. > > Whether the API should allow concurrent forwarding events from > multiple source elements or just a single one. > 3. > > Whether the API should explicitly limit forwarding to the intersection > of the source element and a relevant rendering element, or whether this is > up to the user agent. > 4. > > Whether the API should be exposed on CaptureController, or exposed on > HTMLVideoElement and HTMLCanvasElement. > > > During multiple OT extensions, we have made multiple compromises that have > closed other issues. However, when it comes to these 4 issues, our > suggested compromise that completely accommodated 1-3, was rejected on the > grounds that it does not also fix #4. We do not believe that further > progress on these issues is possible at this time. > > We are confident that any future changes to this API will be compatible > with what we are shipping now. > > > On Mon, Mar 24, 2025 at 6:55 AM Domenic Denicola <dome...@chromium.org> > wrote: > >> >> >> On Friday, March 21, 2025 at 4:42:21 AM UTC+9 elad...@google.com wrote: >> >> Contact emails >> >> elada...@chromium.org, gui...@chromium.org >> >> Explainer >> >> https://github.com/w3c/mediacapture-surface-control/blob/main/README.md >> >> Specification >> >> https://w3c.github.io/mediacapture-surface-control >> >> Design docs >> >> https://docs.google.com/document/d/10UojDvTJ6ojBEOP7cgBIIaE7WZEfe >> s_Qv1eN3A2A0nM/edit?usp=sharing >> >> Summary >> >> A Web API that allows Web applications to: >> 1. Forward wheel events to a captured tab. >> 2. Read and change the zoom level of a captured tab. >> >> Blink component >> >> Blink>GetDisplayMedia >> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EGetDisplayMedia%22> >> >> TAG review >> >> https://github.com/w3ctag/design-reviews/issues/962 >> >> TAG review status >> >> Issues addressed >> >> Origin Trial Name >> >> Captured Surface Control >> >> Chromium Trial Name >> >> CapturedSurfaceControl >> >> >> WebFeature UseCounter name >> >> kCapturedSurfaceControl >> >> Risks >> >> Interoperability and Compatibility >> >> Gecko: No signal (https://github.com/mozilla/standards-positions/issues/ >> 1061) The request for a standards position has no official position. >> Both on that issue and in the WebRTC WG, Mozilla's representative supported >> the use case; but of the issues he had filed against the spec, some remain >> without consensus. >> >> WebKit: No signal (https://github.com/WebKit/ >> standards-positions/issues/388) The request for a standards position has >> no official position. In the WebRTC WG, Apple's representative supported >> the use case; but of the issues he had filed against the spec, some remain >> without consensus. >> >> >> Can you expand on these issues that remain open without consensus, and >> how they might impact interoperability and compatibility risks? >> >> >> >> Web developers: Strongly positive (https://docs.google.com/ >> document/d/1CyKBeo2tGsp_k2HhK6WjDM4dciWEbejUTflKrOVYFvM/edit?usp=sharing) >> >> Security >> >> https://w3c.github.io/mediacapture-surface-control/#privacy-and-security- >> considerations >> >> >> WebView application risks >> >> N/A - this feature is built on top of screen-capture, which is not >> currently supported on mobile platforms. >> >> >> Debuggability >> >> N/A >> >> >> Will this feature be supported on all six Blink platforms (Windows, Mac, >> Linux, ChromeOS, Android, and Android WebView)? >> >> No >> >> Supported on all desktop platforms. (Screen-sharing is not currently >> supported on mobile platforms.) >> >> >> Is this feature fully tested by web-platform-tests >> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> >> ? >> >> No. Given the interaction with the user, the browser's own UX, and >> between the capturing and captured tabs, browser tests produced more >> meaningful coverage. Substantial coverage of that form exists over multiple >> unit tests and end-to-end browser tests. >> >> >> Flag name on about://flags >> >> captured-surface-control >> >> Finch feature name >> >> CapturedDisplaySurface >> >> Tracking bug >> >> https://bugs.chromium.org/p/chromium/issues/detail?id=1466247 >> >> Launch bug >> >> https://launch.corp.google.com/launch/4268170 >> >> Sample links >> >> https://captured-surface-control.glitch.me >> >> Estimated milestones >> >> Origin trial desktop first >> >> 122 >> >> Origin trial desktop last >> >> 127 >> >> Origin trial extension 1 end milestone >> >> 135 >> >> Origin trial extension 2 end milestone >> >> 132 >> >> Origin trial extension 3 end milestone >> >> 129 >> >> DevTrial on desktop >> >> 122 >> >> >> Anticipated spec changes >> >> Additional gestures (in addition to scrolling) may be supported in the >> future, if the need is articulated by Web developers, and subject to a >> separate privacy/security review of those particular gestures. >> >> >> Link to entry on the Chrome Platform Status >> >> https://chromestatus.com/feature/5092615678066688?gate=5158502187663360 >> >> Links to previous Intent discussions >> >> Intent to Prototype: https://groups.google.com/a/ >> chromium.org/d/msgid/blink-dev/CAMO6jDPSgR3kX39drHd9t- >> JvTKBk%2B7Dg03O6dvowzw-LjQ__1A%40mail.gmail.com >> >> Intent to Experiment: https://groups.google.com/a/ >> chromium.org/d/msgid/blink-dev/CAOMQ%2Bw-DF_ >> BCtdwiaYqrXsan3YNBfT2pAeboT0f1F9wmViPPWQ%40mail.gmail.com >> >> Intent to Extend Experiment 1: https://groups.google.com/a/ >> chromium.org/d/msgid/blink-dev/CAMO6jDN%3DJteucLtF5RU%2Bvx9Fbc_ >> CBifdWzjGjtW1Z5zqhcvqgA%40mail.gmail.com >> >> Intent to Extend Experiment 2: https://groups.google.com/a/ >> chromium.org/d/msgid/blink-dev/CAM0wra9vLNpe45swTf1Bgm1ZbH% >> 3DhBt0iAjN_FK49Y%3DznEea3vg%40mail.gmail.com >> >> Intent to Extend Experiment 3: https://groups.google.com/a/ >> chromium.org/g/blink-dev/c/7MbIEBdHMck/m/UBbWTX-hAgAJ >> >> >> 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. 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