/// <summary>
/// Gets a list of available audio capture devices.
/// </summary>
/// <returns>
/// An array of available capture device names.
/// </returns>
public static string[] GetAvailableCaptureDevices()
{
// Get the collection of available capture devices
IMMDeviceCollection deviceCollection = DeviceUtil.GetAvailableDevices(EDataFlow.Capture);
string[] devices = null;
int deviceCount = deviceCollection.GetCount();
devices = new string[deviceCount];
// Iterate over the collection to get the device names
for (int i = 0; i < deviceCount; i++)
{
IMMDevice device = deviceCollection.Item(i);
// Get the friendly name of the device
devices[i] = DeviceUtil.GetDeviceFriendlyName(device);
// Done with the device so release it
Marshal.ReleaseComObject(device);
}
// Release the collection when done
Marshal.ReleaseComObject(deviceCollection);
return(devices);
}
public void UpdateProcessList()
{
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator)(new MMDeviceEnumerator());
IMMDeviceCollection outputDevices = null;
IMMDeviceCollection inputDevices = null;
deviceEnumerator.EnumAudioEndpoints(EDataFlow.eRender, STATE.ACTIVE, out outputDevices);
deviceEnumerator.EnumAudioEndpoints(EDataFlow.eCapture, STATE.ACTIVE, out inputDevices);
uint inputDeviceCount = 0;
uint outputDeviceCount = 0;
inputDevices.GetCount(out inputDeviceCount);
outputDevices.GetCount(out outputDeviceCount);
// Loop over every output device
for (uint i = 0; i < outputDeviceCount; i++)
{
IMMDevice device;
outputDevices.Item(i, out device);
AudioDevice audioDevice = new AudioDevice(device);
Mapper.Mapper.DevicesAndProcesses[audioDevice] = audioDevice.GetAllSessions();
}
}
/// <summary>
/// Gets a collection of available devices.
/// </summary>
/// <param name="dataFlow">The data flow.</param>
/// <returns>A collection of available devices matching the supplied role.</returns>
internal static IMMDeviceCollection GetAvailableDevices(EDataFlow dataFlow)
{
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator) new MMDeviceEnumerator();
IMMDeviceCollection deviceCollection = deviceEnumerator.EnumAudioEndpoints(dataFlow, DeviceStateActive);
Marshal.ReleaseComObject(deviceEnumerator);
return(deviceCollection);
}
public MMDeviceCollection(IMMDeviceCollection deviceCollection)
{
_deviceCollection = deviceCollection;
_devicesList = new List <MMDevice>();
for (int i = 0; i < Count; i++)
{
_devicesList.Add(this[i]);
}
}
// Lists all devices, and for each device all processes that are currently playing sound using that device
public static List <SoundInfoDevice> getSoundInfo()
{
List <SoundInfoDevice> soundInfoDevices = new List <SoundInfoDevice>();
DeviceEnumerator enumerator = new DeviceEnumerator();
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator)enumerator;
IMMDeviceCollection deviceCollection = deviceEnumerator.EnumAudioEndpoints(EDataFlow.eRender, DeviceStatemask.DEVICE_STATE_ACTIVE);
uint deviceCount = deviceCollection.GetCount();
for (uint i = 0; i < deviceCount; i++)
{
SoundInfoDevice soundInfoDevice = new SoundInfoDevice();
soundInfoDevices.Add(soundInfoDevice);
IMMDevice device = deviceCollection.Item(i);
string deviceId = device.GetId();
soundInfoDevice.ID = deviceId;
IMMPropertyStore propertyStore = device.OpenPropertyStore(ProperyStoreMode.STGM_READ);
PropertyKey propertyKeyDeviceDesc = new PropertyKey();
propertyKeyDeviceDesc.fmtid = new Guid(0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0);
propertyKeyDeviceDesc.pid = 2;
PropVariant deviceNamePtr = propertyStore.GetValue(ref propertyKeyDeviceDesc);
string deviceName = Marshal.PtrToStringUni(deviceNamePtr.pszVal);
soundInfoDevice.name = deviceName;
Guid guidAudioSessionManager2 = new Guid("77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F");
IAudioSessionManager2 audioSessionManager = (IAudioSessionManager2)device.Activate(ref guidAudioSessionManager2, (int)ClsCtx.CLSCTX_ALL, IntPtr.Zero);
IAudioSessionEnumerator sessionEnumerator = audioSessionManager.GetSessionEnumerator();
int sessionCount = sessionEnumerator.GetCount();
for (int j = 0; j < sessionCount; j++)
{
IAudioSessionControl audioSessionControl = sessionEnumerator.GetSession(j);
IAudioSessionControl2 audioSessionControl2 = (IAudioSessionControl2)audioSessionControl;
AudioSessionState state = audioSessionControl.GetState();
if (state == AudioSessionState.AudioSessionStateActive)
{
SoundInfoSession soundInfoSession = new SoundInfoSession();
soundInfoDevice.sessions.Add(soundInfoSession);
string displayName = audioSessionControl.GetDisplayName();
string iconPath = audioSessionControl.GetIconPath();
int processId = audioSessionControl2.GetProcessId();
string processName = Process.GetProcessById(processId).MainWindowTitle;
soundInfoSession.pid = processId;
soundInfoSession.windowName = processName;
}
}
}
return(soundInfoDevices);
}
void RefreshDevices()
{
lock (this)
{
IMMDeviceCollection IMMDeviceCollection;
_IMMDeviceEnumerator.EnumAudioEndpoints(EDataFlow.eRender, 0xF, out IMMDeviceCollection);
uint deviceCount = 0;
IMMDeviceCollection.GetCount(out deviceCount);
for (uint n = 0; n < deviceCount; n++)
{
IMMDevice IMMDevice;
IMMDeviceCollection.Item(n, out IMMDevice);
string uid = "";
IMMDevice.GetId(out uid);
if (!_PlaybackDevices.ContainsKey(uid))
{
_PlaybackDevices.Add(uid, new PlaybackDevice_WindowsCoreApi(IMMDevice));
}
}
{
IMMDevice Default;
_IMMDeviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, 0x0, out Default);
string uid = "";
Default.GetId(out uid);
if (!_PlaybackDevices.ContainsKey(uid))
{
_PlaybackDevices.Add(uid, new PlaybackDevice_WindowsCoreApi(Default));
}
_PlaybackDevices[uid]._Default = true;
}
_IMMDeviceEnumerator.EnumAudioEndpoints(EDataFlow.eCapture, 0xF, out IMMDeviceCollection);
deviceCount = 0;
IMMDeviceCollection.GetCount(out deviceCount);
for (uint n = 0; n < deviceCount; n++)
{
IMMDevice IMMDevice;
IMMDeviceCollection.Item(n, out IMMDevice);
string uid = "";
IMMDevice.GetId(out uid);
if (!_RecordingDevices.ContainsKey(uid))
{
_RecordingDevices.Add(uid, new RecordingDevice_WindowsCoreApi(IMMDevice));
}
}
}
}
/// <summary>
/// Returns true if an active microphone session is found.
/// </summary>
public bool IsAnyMicInUse()
{
IMMDeviceEnumerator deviceEnumerator = null;
IMMDeviceCollection microphoneCollection = null;
try
{
deviceEnumerator = (IMMDeviceEnumerator)(new MMDeviceEnumerator());
deviceEnumerator.EnumAudioEndpoints(EDataFlow.eCapture, DEVICE_STATE_XXX.DEVICE_STATE_ACTIVE, out microphoneCollection);
microphoneCollection.GetCount(out uint microphoneCount);
for (uint i = 0; i < microphoneCount; i++)
{
IMMDevice microphone = null;
try
{
microphoneCollection.Item(i, out microphone);
if (microphoneHasActiveSession(microphone))
{
return(true);
}
}
finally
{
if (microphone != null)
{
Marshal.ReleaseComObject(microphone);
}
}
}
}
finally
{
if (microphoneCollection != null)
{
Marshal.ReleaseComObject(microphoneCollection);
}
if (deviceEnumerator != null)
{
Marshal.ReleaseComObject(deviceEnumerator);
}
}
return(false);
}
public List <OutputDeviceModel> GetCurrentActiveDevices(IDeviceStateNotificationHandler dsn)
{
var devices = new List <OutputDeviceModel>();
IMMDeviceCollection activeDevices = null;
uint count = 0;
try
{
Marshal.ThrowExceptionForHR(this.MMDeviceEnumerator.EnumAudioEndpoints(EDataFlow.Render, DeviceState.Active, out activeDevices));
activeDevices?.GetCount(out count);
if (count == 0)
{
return(devices);
}
}
catch (Exception e)
{
Logger.Error($"Failed to get output devices collection", e);
return(devices);
}
for (uint i = 0; i < count; i++)
{
try
{
IMMDevice dev = null;
activeDevices?.Item(i, out dev);
if (dev == null)
{
continue;
}
var device = new MMDevice(dev);
var deviceModel = device.GetOutputDeviceModel(dsn);
if (deviceModel != null)
{
devices.Add(deviceModel);
}
}
catch (Exception e)
{
Logger.Error($"Failed to enumerate output devices", e);
}
}
return(devices);
}
/// <summary>
/// Gets a specific device by its friendly name.
/// </summary>
/// <param name="dataFlow">The data flow.</param>
/// <param name="deviceDescription">The device friendly name.</param>
/// <returns>The default device matching the supplied name.</returns>
internal static IMMDevice GetDeviceByName(EDataFlow dataFlow, string deviceDescription)
{
IMMDevice device = null;
IMMDeviceCollection deviceCollection = GetAvailableDevices(dataFlow);
int deviceCount = deviceCollection.GetCount();
for (int i = 0; i < deviceCount; ++i)
{
IMMDevice dev = deviceCollection.Item(i);
if (GetDeviceFriendlyName(dev) == deviceDescription)
{
// found the named device so stop looking
device = dev;
break;
}
Marshal.ReleaseComObject(dev);
}
Marshal.ReleaseComObject(deviceCollection);
return(device);
}
//Get all the playback audio devices
public static List <AudioDeviceSummary> ListAudioDevices()
{
try
{
List <AudioDeviceSummary> deviceListSummary = new List <AudioDeviceSummary>();
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator) new MMDeviceEnumerator();
IMMDeviceCollection deviceCollection = deviceEnumerator.EnumAudioEndpoints(EDataFlow.eRender, DeviceState.ACTIVE);
uint deviceCount = deviceCollection.GetCount();
for (uint deviceIndex = 0; deviceIndex < deviceCount; deviceIndex++)
{
IMMDevice.IMMDevice deviceItem = deviceCollection.Item(deviceIndex);
//Get the audio device id
string deviceId = deviceItem.GetId();
//Get the audio device name
PropertyVariant propertyVariant = new PropertyVariant();
IPropertyStore propertyStore = deviceItem.OpenPropertyStore(STGM.STGM_READ);
propertyStore.GetValue(ref PKEY_Device_FriendlyName, out propertyVariant);
string deviceName = Marshal.PtrToStringUni(propertyVariant.pwszVal);
//Add device to summary list
deviceListSummary.Add(new AudioDeviceSummary()
{
Identifier = deviceId, Name = deviceName
});
}
return(deviceListSummary);
}
catch
{
Debug.WriteLine("Failed to get audio devices.");
return(null);
}
}
internal MMDeviceCollection(IMMDeviceCollection parent)
{
_MMDeviceCollection = parent;
}
public void EnumAudioEndpoints(DataFlow dataFlow, DeviceState deviceStates, out IMMDeviceCollection devices)
{
_inner.EnumAudioEndpoints(dataFlow, deviceStates, out devices);
}
internal MMDeviceCollection(IMMDeviceCollection parent, EDataFlow flow, EDeviceState state)
{
_MMDeviceCollection = parent;
DataFlow = flow;
DeviceState = state;
}
internal MMDeviceCollection(IMMDeviceCollection deviceCollection)
{
_realDeviceCollection = deviceCollection;
}
public void EnumAudioEndpoints(DataFlow dataFlow, DeviceState deviceStates, out IMMDeviceCollection devices)
{
_inner.EnumAudioEndpoints(dataFlow, deviceStates, out devices);
}
internal MMDeviceCollection(IMMDeviceCollection parent, EDataFlow flow, EDeviceState state)
{
_MMDeviceCollection = parent;
DataFlow = flow;
DeviceState = state;
}
internal AudioDeviceCollection(IMMDeviceCollection parent)
{
_underlyingCollection = parent;
}
public void Dispose()
{
_mmDeviceCollection = null;
}
internal MMDeviceCollection(IMMDeviceCollection parent)
{
_MMDeviceCollection = parent;
}
internal MMDeviceCollection(IMMDeviceCollection collectionInterface)
{
_mmDeviceCollection = collectionInterface;
}
