private Dictionary<string, List<AudioLineInfo>> getDeviceNames(MMDeviceCollection deviceCollection, Dictionary<string, List<AudioLineInfo>> deviceDictionary)
{
// Clear dictionary of previously added data (in case some devices have been unplugged or new ones have been plugged in)
deviceDictionary.Clear() ;
for (int i = 0; i < deviceCollection.Count; i++)
{
MMDevice device = deviceCollection[i];
// Get the device's interface name
string deviceInterfaceFriendlyName = getDeviceInterfaceFriendlyName(device);
// Which is set as a dictionary key if a different line already exists for it...
if (!deviceDictionary.ContainsKey(deviceInterfaceFriendlyName))
{
// If this device interface name hasn't already set as a dictionary key, then create a new entry for its
deviceDictionary[deviceInterfaceFriendlyName] = new List<AudioLineInfo>();
}
// Get the guid of the device.
string deviceGuid = device.ID.Substring(device.ID.LastIndexOf("{") + 1, device.ID.LastIndexOf("}") - device.ID.LastIndexOf("{") -1);
// Associate to the device's interface name a pair consisting of line name (confusingly known as the device friendly name) and the device's friendly name (the REAL friendly name)
string realDeviceFriendlyName = getDeviceFriendlyName(new Guid(deviceGuid), true);
// Gather device line properties to associate with the device's interface name.
AudioLineInfo audioLineInfo = new AudioLineInfo();
// Line name is confusingly known as the device friendly name.
audioLineInfo.LineName = device.FriendlyName;
// The device's friendly name (the REAL friendly name).
audioLineInfo.FriendlyName = realDeviceFriendlyName;
// Device line is always mutable.
audioLineInfo.Mutable = true;
// Associate the device's interface name with device line properties.
deviceDictionary[deviceInterfaceFriendlyName].Add(audioLineInfo);
}
return deviceDictionary;
}
/// <summary>
///
/// </summary>
/// <param name="deviceCollection"></param>
/// <returns></returns>
private MMDevice getDevice(MMDeviceCollection deviceCollection, string deviceInterface, string deviceLine)
{
bool deviceInterfaceFound = false;
for (int i = 0; i < deviceCollection.Count; i++)
{
MMDevice device = deviceCollection[i];
string currentDeviceInterface = getDeviceInterfaceFriendlyName(device);
if (currentDeviceInterface == deviceInterface)
{
deviceInterfaceFound = true;
if (device.FriendlyName == deviceLine)
{
// Set the device id
deviceId = i;
// return the device.
return device;
}
}
}
if (!deviceInterfaceFound)
{
throw new DeviceInterfaceException(deviceInterface, "The " + deviceInterface + " device interface was not found.");
}
else
{
throw new DeviceLineException(deviceInterface, deviceLine, "The " + deviceLine + " device line was not found for the " + deviceInterface + " interface.");
}
}
