[Webkit-unassigned] [Bug 217969] New: [Media in GPU Process] Reduce the number of RequestBuffer IPC messages for AudioDestination
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Oct 20 10:34:44 PDT 2020
https://bugs.webkit.org/show_bug.cgi?id=217969
Bug ID: 217969
Summary: [Media in GPU Process] Reduce the number of
RequestBuffer IPC messages for AudioDestination
Product: WebKit
Version: Other
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: Web Audio
Assignee: webkit-unassigned at lists.webkit.org
Reporter: peng.liu6 at apple.com
CC: cdumez at apple.com
Currently, for every rendering request (to render 128 samples) from the audio output unit, RemoteAudioDestination::render() sends an IPC message RemoteAudioDestinationProxy::RequestBuffer to RemoteAudioDestinationProxy in the Web process. That is unnecessary and inefficient. Since RemoteAudioDestination and RemoteAudioDestinationProxy use a ring buffer to transfer audio samples, we can "combine" multiple rendering requests in one IPC message. Hopefully, that will significantly reduce the number of IPC messages.
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