// 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);
}
private static string GetSystemSoundsName(this IAudioSessionControl sc)
{
string systemSoundsName = string.Empty;
string resourcePath = string.Empty;
try
{
sc.GetDisplayName(out resourcePath);
if (!string.IsNullOrEmpty(resourcePath))
{
var index = int.Parse(resourcePath.Split(',')[1], CultureInfo.InvariantCulture);
systemSoundsName = NativeMethods.ExtractStringFromSystemDLL("AudioSrv.dll",
index < 0 ? -index : index);
}
}
catch (Exception e)
{
Logger.Error($"Failed to get system sounds session name, path: [{resourcePath}]", e);
}
return(systemSoundsName);
}
private static ISimpleAudioVolume GetVolumeObject()
{
IMMDeviceEnumerator deviceEnumerator = null;
IAudioSessionEnumerator sessionEnumerator = null;
IAudioSessionManager2 sessionManager = null;
IMMDevice device = null;
try
{
// ReSharper disable once SuspiciousTypeConversion.Global
deviceEnumerator = (IMMDeviceEnumerator) new MMDeviceEnumerator();
deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia, out device);
// ReSharper disable once InconsistentNaming
var IID_IAudioSessionManager2 = typeof(IAudioSessionManager2).GUID;
object obj;
device.Activate(IID_IAudioSessionManager2, 0, IntPtr.Zero, out obj);
sessionManager = (IAudioSessionManager2)obj;
sessionManager.GetSessionEnumerator(out sessionEnumerator);
int count;
sessionEnumerator.GetCount(out count);
ISimpleAudioVolume volumeControl = null;
for (var i = 0; i < count; i++)
{
IAudioSessionControl sessionControl = null;
IAudioSessionControl2 sessionControl2 = null;
try
{
sessionEnumerator.GetSession(i, out sessionControl);
sessionControl2 = sessionControl as IAudioSessionControl2;
if (sessionControl2 == null)
{
// 多分通らない
string displayName;
sessionControl.GetDisplayName(out displayName);
if (displayName == "Norma")
{
volumeControl = sessionControl as ISimpleAudioVolume;
break;
}
}
else
{
uint processId;
sessionControl2.GetProcessId(out processId);
if (processId == Process.GetCurrentProcess().Id)
{
volumeControl = sessionControl2 as ISimpleAudioVolume;
break;
}
}
}
finally
{
// うーん
/*
* if (sessionControl != null)
* Marshal.ReleaseComObject(sessionControl);
* if (sessionControl2 != null)
* Marshal.ReleaseComObject(sessionControl2);
*/
}
}
return(volumeControl);
}
finally
{
if (sessionEnumerator != null)
{
Marshal.ReleaseComObject(sessionEnumerator);
}
if (sessionManager != null)
{
Marshal.ReleaseComObject(sessionManager);
}
if (device != null)
{
Marshal.ReleaseComObject(device);
}
if (deviceEnumerator != null)
{
Marshal.ReleaseComObject(deviceEnumerator);
}
}
}
