Bug 220802

Summary: [GPUProcess][iOS] https://foobar404.github.io/Wave.js/#/ does not output any audio
Product: WebKit Reporter: Chris Dumez <cdumez>
Component: MediaAssignee: Chris Dumez <cdumez>
Status: RESOLVED FIXED    
Severity: Normal CC: eric.carlson, jer.noble, peng.liu6, pvollan, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch none

Description Chris Dumez 2021-01-21 09:34:27 PST 
https://foobar404.github.io/Wave.js/#/ does not output any audio when the GPUProcess is enabled (works fine with GPUProcess disabled).
Comment 1 Radar WebKit Bug Importer 2021-01-21 09:34:49 PST 
<rdar://problem/73455820>
Comment 2 Chris Dumez 2021-01-21 09:39:00 PST 
Event though the media file starts playing in the GPUProcess, its current time never changes (stays 0). The media is definitely in PLAYING state, not paused.

Interestingly, bypassing RemoteMediaPlayerProxy::setShouldEnableAudioSourceProvider() seems to unblock media playback as I see the current time changing. It must be an issue with the provider somehow.
Comment 3 Chris Dumez 2021-01-21 10:17:56 PST 
This is due to sandboxing. Fixing now.
Comment 4 Chris Dumez 2021-01-21 10:32:19 PST 
Created attachment 418060 [details]
Patch
Comment 5 Per Arne Vollan 2021-01-21 13:36:39 PST 
Comment on attachment 418060 [details]
Patch

R=me.
Comment 6 EWS 2021-01-21 13:39:56 PST 
Committed r271711: <https://trac.webkit.org/changeset/271711>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 418060 [details].