Based on https://bugzilla.mozilla.org/show_bug.cgi?id=1348519#c6 and
https://github.com/w3c/csswg-drafts/issues/3201:
Currently grid-template-rows/columns interpolate “per computed value”, which
means that if the number of tracks differs, or any track changes to/from a
particular keyword value to any other value, or if a line name is added/removed
at any position, the entire track listing is interpolated as “discrete”.
But we "agree" with two more granular options:
1. Check interpolation type per track, rather than for the entire list, before
falling back to discrete. I.e. a length-percentage track can animate between
two values while an adjacent auto track flips discretely to min-content.
2. Allow discrete interpolation of line name changes independently of track
sizes.
Besides, for the repeat() function, it's complicated to support interpolation
between different repeat types (i.e. auto-fill, auto-fit) and different repeat
counts, so we always fall-back to discrete if the first parameter of repeat()
is different.
Differential Revision: https://phabricator.services.mozilla.com/D16129
Implement DOM APIs for ChannelSplitterNode
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Based on #21591. Fixes#21558. I tried to update the expected results for WPT using "./mach update-wpt"; let me know if I got something wrong.
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Remove trailing ? when updating URLSearchParams
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- [x] These changes fix#22639
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Expose TextTrack.activeCues
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- [X] These changes fix#22675
This only exposes the `activeCues` property to make sure that `/html/semantics/embedded-content/media-elements/track/track-element/track-active-cues.html` timeouts consistently.
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HTMLMediaElement backoff protocol and other improvements to a/v playback
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This PR implements a backoff protocol to keep us from dropping frames whenever it's possible. It also add some other improvements like:
- Clean up the implementation a little bit by adding all fetch request related state to `HTMLMediaElementFetchContext`.
- Make sure that we ignore responses from old requests.
- Set the stream to seekable iff there's support for range requests. This will likely change when we add the media cache.
- Implements part of [step 8 of the seek spec](https://html.spec.whatwg.org/multipage/media.html#dom-media-seek) where we bail out if the stream is not seekable.
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This restores the previous behavior of using calc().
Note that background-position / object-position, which test this, weren't
hitting the assertion because they use another codepath.
I didn't add more extensive tests for this because it's well tested for those
two properties, and because this is legacy anyway, see the comment in the test.
I did add the assertion to the codepath those two properties hit.
Differential Revision: https://phabricator.services.mozilla.com/D16176
Ignore children of void elements when serializing
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Implement step 6 of media `time marches on` algorithm. Improves stability of media WPTs
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This should help with the WPTs problems observed in https://github.com/servo/servo/pull/22348#issuecomment-446369831
Unfortunately, GStreamer does not seem to be very reliable with Ogg (check https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/issues/520) and most of the media-element WPTs uses a short ogv file, so I had to make our `canPlayType` report that it is not able to play this type to make the tests pick the alternative mp4 version of the same files. Once Ogg support for GStreamer improves, we should be able to revert this change.
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Remove OrderedMap in favor of IndexMap
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Implement performance interface extension for PerformanceResourceTiming
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(There is a previous closed pull for this #22431)
Implemented the following :
a) Added the maxSize Field to the PerformanceEntryList structure.
b) Implemented the clearResourceTimings, setResourceTimingBufferSize, onresourcetimingbufferfull fuctions for the Performance Structure according to the Interface Specification given at : https://w3c.github.io/resource-timing/#sec-extensions-performance-interface
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Implement URLSearchParams.prototype.sort()
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- [x] These changes fix#22545
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