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LibWeb: Add the concept of direction of playback in HTMLMediaElement

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Zaggy1024 2025-10-14 15:55:38 -05:00 committed by Jelle Raaijmakers
parent 45727d7a58
commit 3be6b957f8
2 changed files with 26 additions and 11 deletions
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30
Libraries/LibWeb/HTML/HTMLMediaElement.cpp
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@ -333,8 +333,7 @@ bool HTMLMediaElement::ended() const
// The ended attribute must return true if, the last time the event loop reached step 1, the media element had ended
// playback and the direction of playback was forwards, and false otherwise.
// FIXME: Add a hook into EventLoop::process() to be notified when step 1 is reached.
// FIXME: Detect playback direction.
return has_ended_playback();
return has_ended_playback() && direction_of_playback() == PlaybackDirection::Forwards;
}
// https://html.spec.whatwg.org/multipage/media.html#durationChange
@ -1590,10 +1589,8 @@ WebIDL::ExceptionOr<void> HTMLMediaElement::play_element()
// 2. If the playback has ended and the direction of playback is forwards, seek to the earliest possible position
// of the media resource.
if (has_ended_playback()) {
// FIXME: Detect playback direction.
if (has_ended_playback() && direction_of_playback() == PlaybackDirection::Forwards)
seek_element(0);
}
// 3. If the media element's paused attribute is true, then:
if (paused()) {
@ -1964,6 +1961,11 @@ bool HTMLMediaElement::is_eligible_for_autoplay() const
document().is_allowed_to_use_feature(DOM::PolicyControlledFeature::Autoplay));
}
HTMLMediaElement::PlaybackDirection HTMLMediaElement::direction_of_playback() const
{
return m_playback_rate >= 0 ? PlaybackDirection::Forwards : PlaybackDirection::Backwards;
}
// https://html.spec.whatwg.org/multipage/media.html#ended-playback
bool HTMLMediaElement::has_ended_playback() const
{
@ -1978,16 +1980,23 @@ bool HTMLMediaElement::has_ended_playback() const
// The current playback position is the end of the media resource, and
m_current_playback_position == m_duration &&
// FIXME: The direction of playback is forwards, and
// The direction of playback is forwards, and
direction_of_playback() == PlaybackDirection::Forwards &&
// The media element does not have a loop attribute specified.
!has_attribute(HTML::AttributeNames::loop)) {
return true;
}
// FIXME: Or:
// The current playback position is the earliest possible position, and
// The direction of playback is backwards.
// Or:
if (
// The current playback position is the earliest possible position, and
m_current_playback_position == 0 &&
// The direction of playback is backwards.
direction_of_playback() == PlaybackDirection::Backwards) {
return true;
}
return false;
}
@ -2012,8 +2021,7 @@ void HTMLMediaElement::reached_end_of_media_playback()
dispatch_time_update_event();
// 2. If the media element has ended playback, the direction of playback is forwards, and paused is false, then:
// FIXME: Detect playback direction.
if (has_ended_playback() && !paused()) {
if (has_ended_playback() && direction_of_playback() == PlaybackDirection::Forwards && !paused()) {
// 1. Set the paused attribute to true.
set_paused(true);

7
Libraries/LibWeb/HTML/HTMLMediaElement.h
View File

@ -216,6 +216,13 @@ private:
void update_volume();
bool is_eligible_for_autoplay() const;
enum class PlaybackDirection : u8 {
Forwards,
Backwards,
};
PlaybackDirection direction_of_playback() const;
bool has_ended_playback() const;
void reached_end_of_media_playback();