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Avoid recording from the wrong Windows microphone

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webadderall committed 2026-09-13 10:50:46 +10:00
1 parent 04663fc31b
commit 435f647351
1 file changed
+9 -39
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electron/native/wgc-capture/src/wasapi_loopback.cpp
+9 -39
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@@ -73,31 +73,12 @@ std::wstring normalizeDeviceName(const std::wstring& value) {
return result;
}
bool containsAsWords(const std::wstring& haystack, const std::wstring& needle) {
if (haystack.empty() || needle.empty()) return false;
size_t position = haystack.find(needle);
while (position != std::wstring::npos) {
const bool startsOnBoundary = position == 0 || haystack[position - 1] == L' ';
const size_t after = position + needle.size();
const bool endsOnBoundary = after == haystack.size() || haystack[after] == L' ';
if (startsOnBoundary && endsOnBoundary) return true;
position = haystack.find(needle, position + 1);
}
return false;
}
int scoreDeviceName(
bool deviceNamesMatch(
const std::wstring& candidateName,
const std::wstring& candidateId,
const std::wstring& requestedName) {
const std::wstring candidate = normalizeDeviceName(candidateName);
const std::wstring id = normalizeDeviceName(candidateId);
const std::wstring requested = normalizeDeviceName(requestedName);
if (requested.empty()) return 0;
if (candidate == requested) return 1000;
if (containsAsWords(candidate, requested) || containsAsWords(requested, candidate)) return 900;
if (containsAsWords(id, requested) || containsAsWords(requested, id)) return 800;
return 0;
return !candidate.empty() && candidate == requested;
}
std::wstring getDeviceFriendlyName(IMMDevice* device) {
@@ -147,31 +128,20 @@ IMMDevice* WasapiCapture::findCaptureDeviceByName(const std::wstring& targetName
UINT count = 0;
collection->GetCount(&count);
IMMDevice* bestDevice = nullptr;
int bestScore = 0;
for (UINT i = 0; i < count; i++) {
IMMDevice* dev = nullptr;
if (FAILED(collection->Item(i, &dev)) || !dev) continue;
LPWSTR rawId = nullptr;
std::wstring candidateId;
if (SUCCEEDED(dev->GetId(&rawId)) && rawId) {
candidateId = rawId;
CoTaskMemFree(rawId);
}
const std::wstring candidateName = getDeviceFriendlyName(dev);
const int score = scoreDeviceName(candidateName, candidateId, targetName);
if (score > bestScore) {
if (bestDevice) bestDevice->Release();
bestDevice = dev;
bestScore = score;
} else {
dev->Release();
if (deviceNamesMatch(candidateName, targetName)) {
collection->Release();
return dev;
}
dev->Release();
}
collection->Release();
return bestDevice;
return nullptr;
}
bool WasapiCapture::initializeLoopback(const std::string& outputPath) {
@@ -213,8 +183,8 @@ bool WasapiCapture::initializeMic(
const bool wantedSpecificDevice =
deviceId != "default" && (!deviceId.empty() || !deviceName.empty());
if (wantedSpecificDevice) {
std::cerr << "WARNING: Requested microphone unavailable; using default WASAPI input"
<< std::endl;
std::cerr << "WARNING: Requested microphone unavailable" << std::endl;
return false;
}
hr = enumerator_->GetDefaultAudioEndpoint(eCapture, eConsole, &device_);
if (FAILED(hr)) return false;