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Set a 500ms timeout when acquiring a frame.

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The API won't give us a new frame if nothing on the screen has changed,
so an INFINITE timeout means we'll wait forever in this case, and
eventually the LED connection will timeout.
This commit is contained in:
David Sansome 2024-05-30 18:59:48 +10:00
parent 3f53d0e2a0
commit fc698f0565
1 changed files with 2 additions and 2 deletions
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4
libsrc/grabber/dda/DDAGrabber.cpp
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@ -174,7 +174,7 @@ int DDAGrabber::grabFrame(Image<ColorRgb> &image)
// Acquire the next frame.
CComPtr<IDXGIResource> desktopResource;
DXGI_OUTDUPL_FRAME_INFO frameInfo;
hr = d->desktopDuplication->AcquireNextFrame(INFINITE, &frameInfo, &desktopResource);
hr = d->desktopDuplication->AcquireNextFrame(500, &frameInfo, &desktopResource);
if (hr == DXGI_ERROR_ACCESS_LOST || hr == DXGI_ERROR_INVALID_CALL)
{
if (!restartCapture())
@ -185,7 +185,7 @@ int DDAGrabber::grabFrame(Image<ColorRgb> &image)
}
if (hr == DXGI_ERROR_WAIT_TIMEOUT)
{
// This shouldn't happen since we specified an INFINITE timeout.
// Nothing changed on the screen in the 500ms we waited.
return 0;
}
RETURN_IF_ERROR(hr, "Failed to acquire next frame", 0);