Function SoundSetGet_GetDevice

source/script2.cpp:7090–7160

HRESULT SoundSetGet_GetDevice(LPTSTR aDeviceString, IMMDevice *&aDevice)
{
	IMMDeviceEnumerator *deviceEnum;
	IMMDeviceCollection *devices;
	HRESULT hr;

	aDevice = NULL;

	hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_ALL, __uuidof(IMMDeviceEnumerator), (void**)&deviceEnum);
	if (SUCCEEDED(hr))
	{
		if (!*aDeviceString)
		{
			// Get default playback device.
			hr = deviceEnum->GetDefaultAudioEndpoint(eRender, eConsole, &aDevice);
		}
		else
		{
			// Parse Name:Index, Name or Index.
			int target_index = 0;
			LPWSTR target_name = L"";
			size_t target_name_length = 0;
			LPTSTR delim = _tcsrchr(aDeviceString, ':');
			if (delim)
			{
				target_index = ATOI(delim + 1) - 1;
				target_name = aDeviceString;
				target_name_length = delim - aDeviceString;
			}
			else if (IsNumeric(aDeviceString, FALSE, FALSE))
			{
				target_index = ATOI(aDeviceString) - 1;
			}
			else
			{
				target_name = aDeviceString;
				target_name_length = _tcslen(aDeviceString);
			}

			// Enumerate devices; include unplugged devices so that indices don't change when a device is plugged in.
			hr = deviceEnum->EnumAudioEndpoints(eAll, DEVICE_STATE_ACTIVE | DEVICE_STATE_UNPLUGGED, &devices);
			if (SUCCEEDED(hr))
			{
				if (target_name_length)
				{
					IMMDevice *dev;
					for (UINT u = 0; SUCCEEDED(hr = devices->Item(u, &dev)); ++u)
					{
						if (LPWSTR dev_name = SoundDeviceGetName(dev))
						{
							if (!_wcsnicmp(dev_name, target_name, target_name_length)
								&& target_index-- == 0)
							{
								CoTaskMemFree(dev_name);
								aDevice = dev;
								break;
							}
							CoTaskMemFree(dev_name);