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Read-only Git mirror of the Mercurial gecko repositories at https://hg.mozilla.org. How to contribute: https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html
f74da16941
Previously `AudioChannelService` called `WindowAudioCaptureChanged()` implicitly whenever we added the agent to the service [1], which made the audio capturing callback happen before finishing registration. There are two drawbacks, (1) it's hard to be aware of that the audio capturing callback would be called before finishing `AudioChannelAgent::NotifyStartedPlaying()` [2], which causes unclear call flow. (2) If someone checks `AudioChannelAgent::IsPlayingStarted()` [3] inside audio capturing callback, then we would find that the `mIsRegToService` is false even if we have registered the agent to `AudioChannelService` because `mIsRegToService` is updated in the last line in the `AudioChannelAgent::NotifyStartedPlaying()`, but the audio capturing callback could be executed before that. [1] https://searchfox.org/mozilla-central/rev/a777ff11b6d700a698c61e5bd17e73b044304494/dom/audiochannel/AudioChannelService.cpp#723 [2] https://searchfox.org/mozilla-central/rev/a777ff11b6d700a698c61e5bd17e73b044304494/dom/audiochannel/AudioChannelAgent.cpp#144 [3] https://searchfox.org/mozilla-central/rev/a777ff11b6d700a698c61e5bd17e73b044304494/dom/audiochannel/AudioChannelAgent.cpp#285 Differential Revision: https://phabricator.services.mozilla.com/D45750 --HG-- extra : moz-landing-system : lando |
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