[Bug 17658] New: need procedure for selection of Key System

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17658

           Summary: need procedure for selection of Key System
           Product: HTML WG
           Version: unspecified
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Encrypted Media Extensions
        AssignedTo: adrianba@microsoft.com
        ReportedBy: eric.sun@huawei.com
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-media@w3.org


If media element’s source attribute has a keySystem attribute then we use this
as selected keySystem, this is OK.
If no selected KeySystem, the specification says “jump to Key Presence”

The question is :

At “jump to Key Presence” is a else if of “selected key system”, so here we
have no idea about key system,
but in "jump to Key Presence", we are handling key already exist, so why before
key system selected, we can have key?

We may need let app or CDM to analyze the initData to find the KeySystem, but I
have not seen any text for Analyzing initData to generate key system here, or I
miss something?

So where we select the Key System if no selected key system in media element?

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Received on Saturday, 30 June 2012 03:44:45 UTC