- From: youennf via GitHub <sysbot+gh@w3.org>
- Date: Fri, 24 Sep 2021 13:39:14 +0000
- To: public-webrtc-logs@w3.org
> What change? This is [literally already specified](https://w3c.github.io/mediacapture-screen-share/#dom-mediadevices).
Sorry, I was meaning we would not reuse MediaTrackConstraints but define specific DisplayAudioTrackConstraints and DisplayVideoTrackConstraints dictionaries, with clearly identified constraints, meaningful to screensharing.
That would prevent throwing for instance if adding an audio constraint exact property added in the video constraints part of a getDisplayMedia call. I just tested it and browsers seem to consistently allow this.
Then, instead of adding a ConstrainDOMString, we would add an enum on displaySurface.
Or we could name it preferredSurface to make it clear this is a preference, not a choice.
We would get better WebIDL typing.
And browsers would not have to start throwing on `navigator.mediaDevices.getDisplayMedia({ video : { displaySurface : { exact : 'window' }}})`.
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