[Webkit-unassigned] [Bug 216703] New: Web Audio sources malfunction when disconnected from the audio graph

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=216703

            Bug ID: 216703
           Summary: Web Audio sources malfunction when disconnected from
                    the audio graph
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: All
                OS: Other
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: juberti at google.com

Observed in STP 113 and iOS14 GA. Does not occur in Chrome or Safari 13.

When using a Web Audio graph of the form:

(BufferSource) -> (MediaStreamDestination) -> (HTMLMediaElement)

disconnecting the BufferSource from the graph causes a malfunction, and garbage audio to be fed to the HTMLMediaElement. Setting HTMLMediaElement.srcObject = null works around the issue.

Demo: https://jsfiddle.net/juberti/dev32of4/

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