Bug 241513

Summary: [GStreamer][EME] Restore the "CDMInstanceProxy::releaseDecryptionResources" virtual method
Product: WebKit Reporter: Yacine Bandou <bandou.yacine>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: RESOLVED WORKSFORME    
Severity: Normal CC: calvaris, olivier.blin, philn
Priority: P2    
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch bandou.yacine: review?, bandou.yacine: commit-queue?

Description Yacine Bandou 2022-06-10 09:24:20 PDT 
This method is removed since this commit "https://github.com/WebKit/WebKit/commit/7b806050f2bbebb".
    
We should restore this method, in order to be overloaded when we need release the DRM resources.
    
In some proprietary embedded DRM implementation we need to release some resources in order to
be able change the DRM system (like passing from PlayReady to Widevine), and start a new playback,
without the javascript GC is performed.
    
For example, in some chipsets, we can not initialize the TEE for multiple DRM systems at the same time.
   
In this EME test page "https://ytlr-cert.appspot.com/2020/main.html?test_type=encryptedmedia-test" we change DRM
system from Widevine to Playready.
Comment 1 Yacine Bandou 2022-06-10 09:45:35 PDT 
Created attachment 460160 [details]
Patch
Comment 2 Xabier Rodríguez Calvar 2022-06-12 23:55:22 PDT 
As I commented on https://bugs.webkit.org/show_bug.cgi?id=223436#c6 . I think you can keep this downstream. It does not belong here anymore.