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LibWeb: Ensure that media elements can seek to the duration

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Due to the round trip of Duration -> double -> Duration, seeking to the
end of some media can sometimes result in the seek being resolved close
to the end but not quite there. This is a little bit of a hack to make
that work, but may be necessary depending on how the spec changes with
regard to the value returned by currentTime after a seek begins.
This commit is contained in:
Zaggy1024 2025-10-10 17:59:54 -05:00 committed by Jelle Raaijmakers
parent cb1719aa81
commit 9e4c87ab85
1 changed files with 8 additions and 2 deletions
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10
Libraries/LibWeb/HTML/HTMLMediaElement.cpp
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@ -1787,8 +1787,14 @@ void HTMLMediaElement::seek_element(double playback_position, MediaSeekMode seek
// 12. Wait until the user agent has established whether or not the media data for the new playback position is
// available, and, if it is, until it has decoded enough data to play back that position.
if (m_playback_manager)
m_playback_manager->seek(AK::Duration::from_seconds_f64(playback_position), manager_seek_mode);
if (m_playback_manager) {
AK::Duration new_playback_position_as_duration;
if (playback_position == m_duration)
new_playback_position_as_duration = m_playback_manager->duration();
else
new_playback_position_as_duration = AK::Duration::from_seconds_f64(playback_position);
m_playback_manager->seek(new_playback_position_as_duration, manager_seek_mode);
}
// 13. Await a stable state. The synchronous section consists of all the remaining steps of this algorithm. (Steps in the
// synchronous section are marked with ⌛.)