Otherwise, the thread will continue to run and access the media data
buffer, which will have been freed.
The test here is a bit strange, but the issue would only consistently
repro after several GC runs.
With this change, we now have ~1200 CellAllocators across both LibJS and
LibWeb in a normal WebContent instance.
This gives us a minimum heap size of 4.7 MiB in the scenario where we
only have one cell allocated per type. Of course, in practice there will
be many more of each type, so the effective overhead is quite a bit
smaller than that in practice.
I left a few types unconverted to this mechanism because I got tired of
doing this. :^)
This commit removes DeprecatedString's "null" state, and replaces all
its users with one of the following:
- A normal, empty DeprecatedString
- Optional<DeprecatedString>
Note that null states of DeprecatedFlyString/StringView/etc are *not*
affected by this commit. However, DeprecatedString::empty() is now
considered equal to a null StringView.
This moves the painting of the media timeout out of VideoPaintable into
a base MediaPaintable. This is to allow re-using the same timeline logic
and controls for audio elements.
This will fetch the URL indicated by the poster attribute when it's set,
changed, or removed. The spec doesn't say how to handle animated poster
images, so we just grab the first frame of the image, which seems to
match other implementations.
This will be needed by the layout node, which may change what is painted
when the position of the frame image is not the same as the element's
current time.
When clicking on the media timeline, compute the percentage along the
timeline's width the user clicked, and set the playback time to the same
percentage of the video's duration.
When the control bar is shown, do not toggle playback when clicking on
the control bar, unless the click target is the playback button. This
will let us implement clicking on the timeline to seek.
Note that this requires caching some layout rects on the video element.
We need to remember where the corresponding layout boxes are, and we
can't cache them on the layout box, as that may be destroyed any time.
The layout node, and therefore the painting box, is frequently destroyed
and recreated. This causes us to forget the cached mouse position we use
to highlight media controls. Move this cached position to the DOM node
instead, which survives relayout.
This has several advantages over the current manual demuxing currently
being performed. PlaybackManager hides the specific demuxer being used,
which will allow more codecs to be added transparently to LibWeb. It
also provides buffering and controls playback rate for us.
Further, it will allow us to much more easily implement the "media
timeline" to render a timestamp and implement seeking.
Note that the default value of the attribute is true. We were previously
autoplaying videos as soon as they loaded - this will prevent that from
happening until the paused attribute is set to false.
Note that as of this commit, there aren't any such throwers, and the
call site in Heap::allocate will drop exceptions on the floor. This
commit only serves to change the declaration of the overrides, make sure
they return an empty value, and to propagate OOM errors frm their base
initialize invocations.
This needs to happen before prototype/constructor intitialization can be
made lazy. Otherwise, GC could run during the C++ constructor and try to
collect the object currently being created.
This is a monster patch that turns all EventTargets into GC-allocated
PlatformObjects. Their C++ wrapper classes are removed, and the LibJS
garbage collector is now responsible for their lifetimes.
There's a fair amount of hacks and band-aids in this patch, and we'll
have a lot of cleanup to do after this.
We had some inconsistencies before:
- Sometimes "The", sometimes "the"
- Sometimes trailing ".", sometimes no trailing "."
I picked the most common one (lowecase "the", trailing ".") and applied
it to all copyright headers.
By using the exact same string everywhere we can ensure nothing gets
missed during a global search (and replace), and that these
inconsistencies are not spread any further (as copyright headers are
commonly copied to new files).
SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
