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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-12 05:35:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-12 05:35:29 +0000 |
commit | 59203c63bb777a3bacec32fb8830fba33540e809 (patch) | |
tree | 58298e711c0ff0575818c30485b44a2f21bf28a0 /dom/html/HTMLCanvasElement.cpp | |
parent | Adding upstream version 126.0.1. (diff) | |
download | firefox-59203c63bb777a3bacec32fb8830fba33540e809.tar.xz firefox-59203c63bb777a3bacec32fb8830fba33540e809.zip |
Adding upstream version 127.0.upstream/127.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/html/HTMLCanvasElement.cpp')
-rw-r--r-- | dom/html/HTMLCanvasElement.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/dom/html/HTMLCanvasElement.cpp b/dom/html/HTMLCanvasElement.cpp index 93a7bb3787..a138f2f30a 100644 --- a/dom/html/HTMLCanvasElement.cpp +++ b/dom/html/HTMLCanvasElement.cpp @@ -857,6 +857,20 @@ already_AddRefed<CanvasCaptureMediaStream> HTMLCanvasElement::CaptureStream( return nullptr; } + // Check if we transferred the OffscreenCanvas to a DOM worker. This is not + // defined by the spec yet, so it is better to fail now than implement + // something not compliant: + // https://github.com/w3c/mediacapture-fromelement/issues/65 + // https://github.com/w3c/mediacapture-extensions/pull/26 + // https://github.com/web-platform-tests/wpt/issues/21102 + if (mOffscreenDisplay && + NS_WARN_IF(!mOffscreenDisplay->CanElementCaptureStream())) { + aRv.ThrowNotSupportedError( + "Capture stream not supported when OffscreenCanvas transferred to " + "worker"); + return nullptr; + } + auto stream = MakeRefPtr<CanvasCaptureMediaStream>(window, this); nsCOMPtr<nsIPrincipal> principal = NodePrincipal(); |