HRESULT CMpcAudioRenderer::GetAudioDevice(IMMDevice **ppMMDevice)
{
TRACE(_T("CMpcAudioRenderer::GetAudioDevice\n"));
CComPtr<IMMDeviceEnumerator> enumerator;
IMMDeviceCollection* devices;
IPropertyStore* pProps = NULL;
HRESULT hr = enumerator.CoCreateInstance(__uuidof(MMDeviceEnumerator));
if (hr != S_OK)
{
TRACE(_T("CMpcAudioRenderer::GetAudioDevice - failed to create MMDeviceEnumerator!\n"));
return hr;
}
TRACE(_T("CMpcAudioRenderer::GetAudioDevice - Target end point: %s\n"), m_csSound_Device);
if (GetAvailableAudioDevices(&devices) == S_OK && devices)
{
UINT count(0);
hr = devices->GetCount(&count);
if (hr != S_OK)
{
TRACE(_T("CMpcAudioRenderer::GetAudioDevice - devices->GetCount failed: (0x%08x)\n"), hr);
return hr;
}
for (ULONG i = 0 ; i < count ; i++)
{
LPWSTR pwszID = NULL;
IMMDevice *endpoint = NULL;
hr = devices->Item(i, &endpoint);
if (hr == S_OK)
{
hr = endpoint->GetId(&pwszID);
if (hr == S_OK)
{
if (endpoint->OpenPropertyStore(STGM_READ, &pProps) == S_OK)
{
PROPVARIANT varName;
PropVariantInit(&varName);
// Found the configured audio endpoint
if ((pProps->GetValue(PKEY_Device_FriendlyName, &varName) == S_OK) && (m_csSound_Device == varName.pwszVal))
{
TRACE(_T("CMpcAudioRenderer::GetAudioDevice - devices->GetId OK, num: (%d), pwszVal: %s, pwszID: %s\n"), i, varName.pwszVal, pwszID);
enumerator->GetDevice(pwszID, ppMMDevice);
SAFE_RELEASE(devices);
*(ppMMDevice) = endpoint;
CoTaskMemFree(pwszID);
pwszID = NULL;
PropVariantClear(&varName);
SAFE_RELEASE(pProps);
return S_OK;
}
else
{
PropVariantClear(&varName);
SAFE_RELEASE(pProps);
SAFE_RELEASE(endpoint);
CoTaskMemFree(pwszID);
pwszID = NULL;
}
}
}
else
{
TRACE(_T("CMpcAudioRenderer::GetAudioDevice - devices->GetId failed: (0x%08x)\n"), hr);
}
}
else
{
TRACE(_T("CMpcAudioRenderer::GetAudioDevice - devices->Item failed: (0x%08x)\n"), hr);
}
CoTaskMemFree(pwszID);
pwszID = NULL;
}
}
TRACE(_T("CMpcAudioRenderer::GetAudioDevice - Unable to find selected audio device, using the default end point!\n"));
hr = enumerator->GetDefaultAudioEndpoint(eRender, eConsole, ppMMDevice);
SAFE_RELEASE(devices);
return hr;
}
HRESULT AudioRendererSettings::GetAudioDevice(IMMDevice** ppMMDevice)
{
Log("CWASAPIRenderFilter::GetAudioDevice");
CComPtr<IMMDeviceEnumerator> enumerator;
IMMDeviceCollection* devices;
HRESULT hr = enumerator.CoCreateInstance(__uuidof(MMDeviceEnumerator));
if (FAILED(hr))
{
Log(" failed to create MMDeviceEnumerator!");
return hr;
}
Log("Target end point: %S", m_wWASAPIPreferredDeviceId);
if (GetAvailableAudioDevices(&devices, NULL, false) == S_OK)
{
UINT count = 0;
hr = devices->GetCount(&count);
if (FAILED(hr))
{
Log(" devices->GetCount failed: (0x%08x)", hr);
return hr;
}
for (UINT i = 0; i < count; i++)
{
LPWSTR pwszID = NULL;
IMMDevice* endpoint = NULL;
hr = devices->Item(i, &endpoint);
if (SUCCEEDED(hr))
{
hr = endpoint->GetId(&pwszID);
if (SUCCEEDED(hr))
{
// Found the configured audio endpoint
if (wcscmp(pwszID, m_wWASAPIPreferredDeviceId) == 0)
{
enumerator->GetDevice(m_wWASAPIPreferredDeviceId, ppMMDevice);
SAFE_RELEASE(devices);
*ppMMDevice = endpoint;
CoTaskMemFree(pwszID);
pwszID = NULL;
return S_OK;
}
else
{
SAFE_RELEASE(endpoint);
CoTaskMemFree(pwszID);
pwszID = NULL;
}
}
else
Log(" devices->GetId failed: (0x%08x)", hr);
}
else
Log(" devices->Item failed: (0x%08x)", hr);
CoTaskMemFree(pwszID);
pwszID = NULL;
}
}
Log("Unable to find selected audio device, using the default end point!");
hr = enumerator->GetDefaultAudioEndpoint(eRender, eConsole, ppMMDevice);
IPropertyStore* pProps = NULL;
if (SUCCEEDED((*ppMMDevice)->OpenPropertyStore(STGM_READ, &pProps)))
{
LPWSTR pwszID = NULL;
PROPVARIANT varName;
PropVariantInit(&varName);
PROPVARIANT eventDriven;
PropVariantInit(&eventDriven);
PROPVARIANT speakerMask;
PropVariantInit(&speakerMask);
if (SUCCEEDED(pProps->GetValue(PKEY_Device_FriendlyName, &varName)) &&
SUCCEEDED(pProps->GetValue(PKEY_AudioEndpoint_Supports_EventDriven_Mode, &eventDriven)) &&
SUCCEEDED((*ppMMDevice)->GetId(&pwszID)))
{
pProps->GetValue(PKEY_AudioEndpoint_PhysicalSpeakers, &speakerMask);
Log("Default audio endpoint: \"%S\" (%S) - pull mode: %d sprk mask: %d" ,varName.pwszVal, pwszID, eventDriven.intVal, speakerMask.uintVal);
}
CoTaskMemFree(pwszID);
pwszID = NULL;
PropVariantClear(&varName);
PropVariantClear(&eventDriven);
PropVariantClear(&speakerMask);
SAFE_RELEASE(pProps)
}
