This commit implements the functionality to play back audio through
PlaybackManager.
To decode the audio data, AudioDataProviders are created for each track
in the provided media data. These providers will fill their audio block
queue, then sit idle until their corresponding tracks are enabled.
In order to output the audio, one AudioMixingSink is created which
manages a PlaybackStream which requests audio blocks from multiple
AudioDataProviders and mixes them into one buffer with sample-perfect
precision.
With this commit, all PlaybackManager can do is autoplay a file from
start to finish, with no pausing or seeking functionality.
All audio playback functionality has been removed from HTMLMediaElement
and HTMLAudioElement in anticipation of PlaybackManager taking that
over, for both audio-only and audio/video.
Very minor change, which doesn't actually affect our output, since we
were already inputting and outputting microseconds, but it can't hurt
to give FFmpeg's decoder this information as well.
We should be fine to just fall back to zero or the last returned value
if we encounter an error in PlaybackStream::total_time_played(), and
this also simplifies the using code.
There's a fairly complicated interaction between an SVG gradient's paint
transformation and the gradient coordinate transformation required to
correctly draw gradient fills. This was especially noticeable when
scaling down an SVG, resulting in broken gradient coordinates and
graphical glitches.
This changes the objectBoundingBox units to immediately map to the
bounding box's coordinate system, so we can unify the gradient paint
transformation logic and make it a lot simpler. We only need to undo the
bounding box offset and apply the paint transformation to fix a lot of
gradient fill bugs.
We don't need to construct a new AffineTransform and multiply that by
yet another AffineTransform; we can simply translate and scale the
transform that's already in place. No functional changes.
This shrinks every Statement and ECMAScriptFunctionObject by one
pointer, and puts the bytecode cache in the only place that actually
makes use of it anyway: functions.
This function was supposed to throw errors even before the TrustedTypes
spec thanks to the CharacterData replaceData call but had a MUST.
This changes this to ensure this function can throw an error
There are a few places in style computation where we want to update the
value of a property without modifying the inherited or important flags.
Previously we would look up these flags and pass them to the normal
`set_property` method but this is unnecessary and was easy to forget to
do.
The "SerenityOS DSL Syntax Highlight" extension has been de-listed
from both the VS Code Marketplace and Open VSX. Remove the broken
section from the documentation to prevent confusion.
