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libobs: gs_duplicator_get_monitor_index

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Helper function to find DXGI output index of HMONITOR.
This commit is contained in:
jpark37
2021-01-26 17:11:04 -08:00
parent db35a022cd
commit 2b652cc763
5 changed files with 57 additions and 0 deletions
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libobs-d3d11/d3d11-duplicator.cpp
+41
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@@ -122,6 +122,47 @@ EXPORT bool device_get_duplicator_monitor_info(gs_device_t *device,
return true;
}
EXPORT int device_duplicator_get_monitor_index(gs_device_t *device,
void *monitor)
{
const HMONITOR handle = (HMONITOR)monitor;
int index = -1;
UINT output = 0;
while (index == -1) {
IDXGIOutput *pOutput;
const HRESULT hr =
device->adapter->EnumOutputs(output, &pOutput);
if (hr == DXGI_ERROR_NOT_FOUND)
break;
if (SUCCEEDED(hr)) {
DXGI_OUTPUT_DESC desc;
if (SUCCEEDED(pOutput->GetDesc(&desc))) {
if (desc.Monitor == handle)
index = output;
} else {
blog(LOG_ERROR,
"device_duplicator_get_monitor_index: "
"Failed to get desc (%08lX)",
hr);
}
pOutput->Release();
} else if (hr == DXGI_ERROR_NOT_FOUND) {
blog(LOG_ERROR,
"device_duplicator_get_monitor_index: "
"Failed to get output (%08lX)",
hr);
}
++output;
}
return index;
}
static std::unordered_map<int, gs_duplicator *> instances;
void reset_duplicators(void)