- From: ddorwin via GitHub <sysbot+gh@w3.org>
- Date: Mon, 06 Jun 2016 22:46:43 +0000
- To: public-html-media@w3.org
ddorwin has just created a new issue for https://github.com/w3c/encrypted-media: == Access of session's "record of key usage" in the MediaKeySession Destroyed and Session Closed algorithms is inconsistent == The current access of a session's _record of key usage_ are: 1. `generateRequest()`, `remove()`, and `update()` algorithms: By the CDM and in parallel to the main event loop 1. Attempt to Decrypt algorithm: By the CDM within the playback algorithms, which must run in parallel to the main event loop 1. Session Closed algorithm: By the **user agent** in a task, which runs **on the main event loop** 1. MediaKeySession Destroyed algorithm: By the **user agent** in parallel to the main event loop This session state is managed by the CDM, which always operates in parallel to the main event loop. Thus, it should either be explicitly provided to the user agent algorithm by the CDM (i.e. "Run the Foo Bar algorithm, passing _record of key usage_.") or accessed by the the CDM in parallel. In the latter case, the CDM could perform the operation or be used to obtain the value. The fix for (4) could be as simple as moving the last two steps under a "Use the _cdm_ to execute the following steps:" step. (3) is more complex because the algorithm is running in a task on the main event loop. If ordering with the other events and the promise in that method are important, just running the step in parallel could be problematic. Please view or discuss this issue at https://github.com/w3c/encrypted-media/issues/225 using your GitHub account
Received on Monday, 6 June 2016 22:46:44 UTC