How is this done in Gecko? We learn something is not visible during one of the various cullings of WebRender. So I guess the idea would be to have some notification you send when something goes from visible previously to invisible. I suppose there is an analog when doing flow construction that you might find a flow that was previously visible is now display: none.
So it almost seems like we want something in the DOM elements which allow them to be notified of visibility changes. For videos, this could stop video decode, and for images, this may let their cache memory be reclaimed, etc. One issue that wasn't covered in that lightning talk is that what happens when the video comes back into view? Decoding can only be started at a keyframe, so how do they resume playback? Does the demuxer tell them which frames are prediction sources so they can save those and then resume decoding by decoding those plus the current frame? VLC for example does not have a check for this which results in very odd results where only the part of the image that is moving is visible until a new keyframe appears and the whole scene pops into view. jack. On Fri, Jun 17, 2016 at 5:01 AM, Josh Matthews <j...@joshmatthews.net> wrote: > While listening to the Gecko platform talk about shutting down video > decoders for offscreen elements, I wondered about how we could do the same > in Servo. We obviously don't support decoding video yet, but what would be > an efficient way of doing that in the future? > > Cheers, > Josh > _______________________________________________ > dev-servo mailing list > dev-servo@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-servo _______________________________________________ dev-servo mailing list dev-servo@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-servo
