///////////////////////////////////////////////////////////////////////////////
// Function:
// EndpointIsMicArray
//
// Description:
// Determines if a given IMMDevice is a microphone array by Endpoint pointer
//
// Returns:
// S_OK on success
///////////////////////////////////////////////////////////////////////////////
HRESULT EndpointIsMicArray(IMMDevice* pEndpoint, bool & isMicrophoneArray)
{
if (pEndpoint == NULL)
return E_POINTER;
GUID subType = {0};
HRESULT hr = GetJackSubtypeForEndpoint(pEndpoint, &subType);
isMicrophoneArray = (subType == KSNODETYPE_MICROPHONE_ARRAY) ? true : false;
return hr;
}// EndpointIsMicArray()
///////////////////////////////////////////////////////////////////////////
// GetMicArrayDeviceIndex
//
// Obtain device index corresponding to microphone array device.
//
// Parameters: piDevice: [out] Index of microphone array device.
//
// Return: S_OK if successful
// Failure code otherwise (e.g.: if microphone array device is not found).
//
///////////////////////////////////////////////////////////////////////////////
int KinectAudioSource::GetMicArrayDeviceIndex()
{
CComPtr<IMMDeviceEnumerator> spEnumerator;
CHECKHR( spEnumerator.CoCreateInstance( __uuidof(MMDeviceEnumerator), NULL, CLSCTX_ALL ) );
CComPtr<IMMDeviceCollection> spEndpoints;
CHECKHR( spEnumerator->EnumAudioEndpoints( eCapture, DEVICE_STATE_ACTIVE, &spEndpoints ) );
UINT dwCount = 0;
CHECKHR(spEndpoints->GetCount(&dwCount));
// Iterate over all capture devices until finding one that is a microphone array
for ( UINT index = 0; index < dwCount; index++) {
IMMDevice* spDevice;
CHECKHR( spEndpoints->Item( index, &spDevice ) );
GUID subType = GetJackSubtypeForEndpoint( spDevice );
if ( subType == KSNODETYPE_MICROPHONE_ARRAY ) {
return index;
}
}
throw std::runtime_error( "デバイスが見つかりません" );
}
