- From: <bugzilla@jessica.w3.org>
- Date: Fri, 12 Dec 2014 22:32:46 +0000
- To: public-html-media@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=27599 Bug ID: 27599 Summary: Allow SourceBuffer.trackDefaults to be nullable Product: HTML WG Version: unspecified Hardware: PC OS: All Status: NEW Severity: normal Priority: P2 Component: Media Source Extensions Assignee: adrianba@microsoft.com Reporter: wolenetz@google.com QA Contact: public-html-bugzilla@w3.org CC: mike@w3.org, public-html-media@w3.org In current spec, if an app wants to clear a SourceBuffer's non-empty trackDefaults, it must set the attribute to a TrackDefaultList that was constructed with an empty sequence<TrackDefault>. For example: ... sb = mediaSource.activeSourceBuffers[0]; sb.trackDefaults = new TrackDefaultList( [] ); ... This bug is to request change to spec to make this operation more natural, by specifying: 0. the SourceBuffer.trackDefaults attribute is nullable 1. the SourceBuffer.trackDefaults attribute setter allows null 2. the initial value of SourceBuffer.trackDefaults is null 3. the default {language, kind, label} algorithms behave correctly if trackDefaults is null These changes would be app-visible and #2 would possibly break existing apps. Alternatively, maybe #2 should be: 2. prior to any explicit set operation by app, the SourceBuffer.trackDefaults attribute getter should return an empty TrackDefaultList object that is the same object (===) each time for this SourceBuffer. -- You are receiving this mail because: You are on the CC list for the bug.
Received on Friday, 12 December 2014 22:32:49 UTC