Bug 216703

Summary:

Regression(r265280) Web Audio sources malfunction when disconnected from the audio graph

Product:

WebKit

Reporter:

Justin Uberti <juberti>

Component:

Web Audio

Assignee:

youenn fablet <youennf>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

cdumez, eric.carlson, ews-watchlist, glenn, jer.noble, philipj, sergio, webkit-bug-importer, youennf

Priority:

Keywords:

InRadar

Version:

Safari Technology Preview

Hardware:

All

OS:

Other

Bug Depends on:

Bug Blocks:

212611, 215127

Attachments:

Description	Flags
Patch	none

Justin Uberti

Reported 2020-09-18 10:05:48 PDT

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/

Attachments
Patch (3.77 KB, patch) 2020-09-24 02:22 PDT, youenn fablet	no flags	Details Formatted Diff Diff
View All Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2020-09-18 10:08:12 PDT

<rdar://problem/69158436>

Chris Dumez

Comment 2 2020-09-23 16:05:03 PDT

I am able to reproduce. Thank you for the reproduction case, I will investigate.

Chris Dumez

Comment 3 2020-09-23 16:26:52 PDT

This is a regression from http://trac.webkit.org/changeset/265280.

youenn fablet

Comment 4 2020-09-24 02:22:37 PDT

Created attachment 409546 [details] Patch

EWS

Comment 5 2020-09-24 08:11:35 PDT

Committed r267530: <https://trac.webkit.org/changeset/267530> All reviewed patches have been landed. Closing bug and clearing flags on attachment 409546 [details].

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