//
// Initialize the capturer.
//
bool CWASAPICapture::Initialize(UINT32 EngineLatency)
{
//
// Create our shutdown event - we want auto reset events that start in the not-signaled state.
//
_ShutdownEvent = CreateEventEx(NULL, NULL, 0, EVENT_MODIFY_STATE | SYNCHRONIZE);
if (_ShutdownEvent == NULL)
{
printf_s("Unable to create shutdown event: %d.\n", GetLastError());
return false;
}
//
// Now activate an IAudioClient object on our preferred endpoint and retrieve the mix format for that endpoint.
//
HRESULT hr = _Endpoint->Activate(__uuidof(IAudioClient), CLSCTX_INPROC_SERVER, NULL, reinterpret_cast<void **>(&_AudioClient));
if (FAILED(hr))
{
printf_s("Unable to activate audio client: %x.\n", hr);
return false;
}
hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&_DeviceEnumerator));
if (FAILED(hr))
{
printf_s("Unable to instantiate device enumerator: %x\n", hr);
return false;
}
//
// Load the MixFormat. This may differ depending on the shared mode used
//
if (!LoadFormat())
{
printf_s("Failed to load the mix format \n");
return false;
}
//
// Remember our configured latency
//
_EngineLatencyInMS = EngineLatency;
if (!InitializeAudioEngine())
{
return false;
}
return true;
}
//
// Initialize the capturer.
//
bool CWASAPICapture::Initialize(UINT32 EngineLatency)
{
//
// Create our shutdown event - we want auto reset events that start in the not-signaled state.
//
_ShutdownEvent = CreateEventEx(NULL, NULL, 0, EVENT_MODIFY_STATE | SYNCHRONIZE);
PersistentAssert(_ShutdownEvent != NULL, "CreateEventEx failed");
//
// Create our stream switch event- we want auto reset events that start in the not-signaled state.
// Note that we create this event even if we're not going to stream switch - that's because the event is used
// in the main loop of the capturer and thus it has to be set.
//
_StreamSwitchEvent = CreateEventEx(NULL, NULL, 0, EVENT_MODIFY_STATE | SYNCHRONIZE);
PersistentAssert(_StreamSwitchEvent != NULL, "CreateEventEx failed");
//
// Now activate an IAudioClient object on our preferred endpoint and retrieve the mix format for that endpoint.
//
HRESULT hr = _Endpoint->Activate(__uuidof(IAudioClient), CLSCTX_INPROC_SERVER, NULL, reinterpret_cast<void **>(&_AudioClient));
PersistentAssert(SUCCEEDED(hr), "_Endpoint->Activate failed");
hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&_DeviceEnumerator));
PersistentAssert(SUCCEEDED(hr), "CoCreateInstance failed");
//
// Load the MixFormat. This may differ depending on the shared mode used
//
LoadFormat();
//
// Remember our configured latency in case we'll need it for a stream switch later.
//
_EngineLatencyInMS = EngineLatency;
InitializeAudioEngine();
return true;
}
