LibWeb: Set AudioTrack and VideoTrack fields according to spec

The two classes now inherit from a common base MediaTrackBase, to
deduplicate the attributes that are shared between the two.

The integer ID from the container is used for each track's id
attribute.

The kind attribute is set to "main" or "translation" according to:
https://dev.w3.org/html5/html-sourcing-inband-tracks/

The label attribute is set to the human-readable name of the track, if
one is present.

The language attribute is set to a BCP 47 language tag, if one can be
parsed successfully.
This commit is contained in:
Zaggy1024 2025-09-30 17:18:32 -05:00 committed by Jelle Raaijmakers
parent 29ab9c5fd5
commit 3d0b8cc30c
Notes: github-actions[bot] 2025-10-28 00:34:44 +00:00
8 changed files with 148 additions and 87 deletions

View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
* Copyright (c) 2025, Gregory Bertilson <gregory@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -10,11 +11,12 @@
#include <AK/Time.h>
#include <LibMedia/Track.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/HTML/MediaTrackBase.h>
namespace Web::HTML {
class VideoTrack final : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(VideoTrack, Bindings::PlatformObject);
class VideoTrack final : public MediaTrackBase {
WEB_PLATFORM_OBJECT(VideoTrack, MediaTrackBase);
GC_DECLARE_ALLOCATOR(VideoTrack);
public:
@ -22,41 +24,19 @@ public:
void set_video_track_list(Badge<VideoTrackList>, GC::Ptr<VideoTrackList> video_track_list) { m_video_track_list = video_track_list; }
String const& id() const { return m_id; }
String const& kind() const { return m_kind; }
String const& label() const { return m_label; }
String const& language() const { return m_language; }
bool selected() const { return m_selected; }
void set_selected(bool selected);
Media::Track const& track_in_playback_manager() const { return m_track_in_playback_manager; }
private:
VideoTrack(JS::Realm&, GC::Ref<HTMLMediaElement>, Media::Track const& track);
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
// https://html.spec.whatwg.org/multipage/media.html#dom-videotrack-id
String m_id;
// https://html.spec.whatwg.org/multipage/media.html#dom-videotrack-kind
String m_kind;
// https://html.spec.whatwg.org/multipage/media.html#dom-videotrack-label
String m_label;
// https://html.spec.whatwg.org/multipage/media.html#dom-videotrack-language
String m_language;
// https://html.spec.whatwg.org/multipage/media.html#dom-videotrack-selected
bool m_selected { false };
GC::Ref<HTMLMediaElement> m_media_element;
GC::Ptr<VideoTrackList> m_video_track_list;
Media::Track m_track_in_playback_manager;
};
}