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fix: limit secondary to non-SSA/ASS subtitles

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Ivan Schurawel 2022-10-10 21:26:15 -04:00 • committed by Ivan Schurawel
parent f33699ad8a
commit 9ddafb063b
3 changed files with 22 additions and 8 deletions
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21
src/components/playback/playbackmanager.js
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@ -876,15 +876,28 @@ class PlaybackManager {
});
};
self.hasSecondarySubtitleSupport = function (player = self._currentPlayer) {
self.playerHasSecondarySubtitleSupport = function (player = self._currentPlayer) {
if (!player) return false;
return Boolean(player.supports('SecondarySubtitles'));
};
/**
* Checks if:
* - the track can be used directly as a secondary subtitle
* - or if it can be paired with a secondary subtitle when used as a primary subtitle
*/
self.trackHasSecondarySubtitleSupport = function (track, player = self._currentPlayer) {
if (!player || !self.playerHasSecondarySubtitleSupport(player)) return false;
const format = (track.Codec || '').toLowerCase();
// Currently, only non-SSA/non-ASS external subtitles are supported.
// Showing secondary subtitles does not work with any SSA/ASS subtitle combinations because
// of the complexity of how they are rendered and the risk of the subtitles overlapping
return format !== 'ssa' && format !== 'ass' && getDeliveryMethod(track) === 'External';
};
self.secondarySubtitleTracks = function (player = self._currentPlayer) {
const streams = self.subtitleTracks(player);
// Currently, only External subtitles are supported
return streams.filter((stream) => getDeliveryMethod(stream) === 'External');
return streams.filter((stream) => self.trackHasSecondarySubtitleSupport(stream, player));
};
function getCurrentSubtitleStream(player) {
@ -1575,7 +1588,7 @@ class PlaybackManager {
self.setSecondarySubtitleStreamIndex = function (index, player) {
player = player || self._currentPlayer;
if (!self.hasSecondarySubtitleSupport(player)) return;
if (!self.playerHasSecondarySubtitleSupport(player)) return;
if (player && !enableLocalPlaylistManagement(player)) {
try {
return player.setSecondarySubtitleStreamIndex(index);