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fix: fix preferred track selection on Safari #5601
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joeyparrish
merged 1 commit into
shaka-project:main
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sky-hugolima:wt-safari-pref-track-fix
Sep 5, 2023
Merged
fix: fix preferred track selection on Safari #5601
joeyparrish
merged 1 commit into
shaka-project:main
from
sky-hugolima:wt-safari-pref-track-fix
Sep 5, 2023
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Incremental code coverage: 58.82% |
avelad
added
type: bug
Something isn't working correctly
priority: P2
Smaller impact or easy workaround
labels
Sep 5, 2023
joeyparrish
approved these changes
Sep 5, 2023
Well done, and thank you! |
joeyparrish
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Sep 5, 2023
Preferred track selection was implemented differently for MSE and native playback. In fact, native playback even had different implementations for audio and text. It leads to inconsistencies during track selection, i.e. if track language contains locale, but language preference not, on MSE we're looking for closest locale and on src= we're making direct string comparison which leads to different results. To unify that, both MSE and native will now use `StreamUtils.filterStreamsByLanguageAndRole()` to find matching track. This method is designed to use on `shaka.extern.Stream` but luckily it uses the very same fields as defined in `shaka.extern.Track` so we can use it without major changes. Moreover, using this more robust method also allows us to get rid of double-selection workaround used so far. Observe that we were first selecting track without preferred role and then with preferred role.
joeyparrish
pushed a commit
that referenced
this pull request
Sep 5, 2023
Preferred track selection was implemented differently for MSE and native playback. In fact, native playback even had different implementations for audio and text. It leads to inconsistencies during track selection, i.e. if track language contains locale, but language preference not, on MSE we're looking for closest locale and on src= we're making direct string comparison which leads to different results. To unify that, both MSE and native will now use `StreamUtils.filterStreamsByLanguageAndRole()` to find matching track. This method is designed to use on `shaka.extern.Stream` but luckily it uses the very same fields as defined in `shaka.extern.Track` so we can use it without major changes. Moreover, using this more robust method also allows us to get rid of double-selection workaround used so far. Observe that we were first selecting track without preferred role and then with preferred role. Backported to v4.3.x
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Labels
priority: P2
Smaller impact or easy workaround
status: archived
Archived and locked; will not be updated
type: bug
Something isn't working correctly
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Preferred track selection was implemented differently for MSE and native playback. In fact, native playback even had different implementations for audio and text. It leads to inconsistencies during track selection, i.e. if track language contains locale, but language preference not, on MSE we're looking for closest locale and on src= we're making direct string comparison which leads to different results.
To unify that, both MSE and native will now use
StreamUtils.filterStreamsByLanguageAndRole()
to find matching track. This method is designed to use onshaka.extern.Stream
but luckily it uses the very same fields as defined inshaka.extern.Track
so we can use it without major changes.Moreover, using this more robust method also allows us to get rid of double-selection workaround used so far. Observe that we were first selecting track without preferred role and then with preferred role.