218729 2020-11-09 16:16:55 -0800 [GPUProcess] Regression(r268632) Garbage is rendered on speakers when using WebAudio 2020-11-10 10:53:16 -0800 1 1 1 Unclassified WebKit Web Audio WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 217715 1 cdumez cdumez cdumez eric.carlson ews-watchlist ggaren glenn jer.noble peng.liu6 philipj sergio webkit-bug-importer oldest_to_newest 1705927 0 cdumez 2020-11-09 16:16:55 -0800 garbage is rendered on speakers when using WebAudio and when enabling the GPU Process. Easily testable with this demo: https://webaudiodemos.appspot.com/MIDIDrums/index.html This is a regression from using a CARingBuffer. 1705942 1 413644 cdumez 2020-11-09 16:43:23 -0800 Created attachment 413644 Patch 1705969 2 413644 peng.liu6 2020-11-09 19:40:41 -0800 Comment on attachment 413644 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=413644&action=review > Source/WebKit/ChangeLog:14 > + remain to processed (usually 0). As a result, RemoteAudioDestinationProxy::renderOnRenderingThead() Good catch! I misunderstood the comment of PushPullFIFO::pull(). The return value of this function is the number of samples *left* in the FIFO, not the number of samples fetched from the FIFO. > Source/WebKit/WebProcess/GPU/media/RemoteAudioDestinationProxy.cpp:140 > completionHandler(0, 0); Not a problem of this patch. But we have to early return here after calling completionHandler(). 1706083 3 413697 cdumez 2020-11-10 08:26:52 -0800 Created attachment 413697 Patch 1706121 4 ews-feeder 2020-11-10 10:52:08 -0800 Committed r269630: <https://trac.webkit.org/changeset/269630> All reviewed patches have been landed. Closing bug and clearing flags on attachment 413697. 1706122 5 webkit-bug-importer 2020-11-10 10:53:16 -0800 <rdar://problem/71245599> 413644 2020-11-09 16:43:23 -0800 2020-11-10 08:26:51 -0800 Patch bug-218729-20201109164322.patch text/plain 10614 cdumez U3VidmVyc2lvbiBSZXZpc2lvbjogMjY5NjA1CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggMmZmMTRiNTk5ZWMwNjg5 ZTdhMGFlMmZiMjUwZjMyOWNhNDRmYTZkMi4uODA1N2IxODdmYmZmNDM4OGMzMjc0YjgzMDJkYzA3 MDQzZTU2OWNhNyAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDIxIEBACisyMDIwLTExLTA5ICBDaHJp cyBEdW1leiAgPGNkdW1lekBhcHBsZS5jb20+CisKKyAgICAgICAgW0dQVVByb2Nlc3NdIFJlZ3Jl c3Npb24ocjI2ODYzMikgR2FyYmFnZSBpcyByZW5kZXJlZCBvbiBzcGVha2VycyB3aGVuIHVzaW5n IFdlYkF1ZGlvCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9p ZD0yMTg3MjkKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAg 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