public static void listDeviceProperties(IMMDevice dev, DEVICE_SUMMARY defaultDevice)
{
IPropertyStore propertyStore;
dev.OpenPropertyStore(0 /*STGM_READ*/, out propertyStore);
PROPVARIANT property; propertyStore.GetValue(ref PropertyKey.PKEY_Device_EnumeratorName, out property);
System.Console.WriteLine(" EnumeratorName: " + (string)property.Value);
propertyStore.GetValue(ref PropertyKey.PKEY_Device_FriendlyName, out property);
System.Console.WriteLine(" FriendlyName: " + (string)property.Value);
if (!defaultDevice.Equals(null) && defaultDevice.FriendlyName == (string)property.Value)
{
System.Console.WriteLine(" **Default: True**");
}
Marshal.ReleaseComObject(propertyStore);
IAudioEndpointVolume epv = null;
var epvid = typeof(IAudioEndpointVolume).GUID;
Marshal.ThrowExceptionForHR(dev.Activate(ref epvid, /*CLSCTX_ALL*/ 23, 0, out epv));
bool mute; epv.GetMute(out mute); if (mute)
{
System.Console.WriteLine(" **GetMute: " + mute + "**");
}
float vol; epv.GetMasterVolumeLevelScalar(out vol); System.Console.WriteLine(" GetMasterVolumeLevelScalar: " + vol);
}
static void Main(string[] args)
{
Console.Error.WriteLine();
Console.Error.WriteLine("Syntax: audio.cs.exe [setMute] [dataFlow]"); // args[0] args[1]
Console.Error.WriteLine(" [setMute] 0=mute; 1=unmute; *=followDefault");
Console.Error.WriteLine(" [dataFlow] 0=render/playback; 1=capture/recording; 2=All");
Console.Error.WriteLine();
bool defaultDeviceMuted;
string setMute = (args.Length > 0) ? args[0] : "";
int dataFlow = 2; if (args.Length > 1)
{
switch (args[1])
{
case "0":
case "1":
case "2":
dataFlow = Convert.ToInt32(args[1]);
break;
}
}
System.Collections.Generic.List <DEVICE_SUMMARY> defaultDevices
= new System.Collections.Generic.List <DEVICE_SUMMARY>();
if (dataFlow == 2)
{
DEVICE_SUMMARY defaultDevice = getDefaultDeviceSummary(0, 1);
defaultDeviceMuted = defaultDevice.isMuted;
defaultDevices.Add(defaultDevice);
defaultDevices.Add(getDefaultDeviceSummary(1, 1));
}
else
{
DEVICE_SUMMARY defaultDevice = getDefaultDeviceSummary(dataFlow, 1);
defaultDeviceMuted = defaultDevice.isMuted;
defaultDevices.Add(defaultDevice);
}
if (setMute == "*")
{
Console.Error.WriteLine("defaultDeviceMuted: " + defaultDeviceMuted + "\n");
setMute = (defaultDeviceMuted) ? "0" : "1";
}
listDevices(dataFlow, setMute, defaultDevices);
Console.Error.WriteLine("OK");
return;
} // Main()
public static void listDevices(int dataFlow, string setMute, System.Collections.Generic.List <DEVICE_SUMMARY> defaultDevices)
{
var enumerator = new MMDeviceEnumeratorComObject() as IMMDeviceEnumerator;
uint deviceCount = 0, i = 0;
System.Console.Write("EnumAudioEndpoints: ...");
IMMDeviceCollection deviceCollection; enumerator.EnumAudioEndpoints(dataFlow, 1, out deviceCollection);
// EDataFlow: 0=eRender;1=eCapture;2=eAll | 1=DEVICE_STATE_ACTIVE
deviceCollection.GetCount(out deviceCount); System.Console.WriteLine(" deviceCount=" + deviceCount);//return;
for (i = 0; i < deviceCount; i++)
{
System.Console.Write("\n" + i + ":");
IMMDevice dev = null; deviceCollection.Item(i, out dev);
if (!Object.ReferenceEquals(null, dev))
{
IMMEndpoint ep = (IMMEndpoint)dev; // Marshal.QueryInterface shouldn't be necessary, just use cast instead [ http://stackoverflow.com/questions/5077172/how-do-i-use-marshal-queryinterface ]
int dataFlow1; ep.GetDataFlow(out dataFlow1);
System.Console.WriteLine(" GetDataFlow: [" + dataFlow1 + "] " + ((dataFlow1 == 0)?"Playback":"Recording"));
DEVICE_SUMMARY defaultDevice = new DEVICE_SUMMARY();
foreach (var dev0 in defaultDevices)
{
if (dev0.dataFlow == dataFlow1)
{
defaultDevice = dev0;
break;
}
}
listDeviceProperties(dev, defaultDevice);
if (setMute == "0" || setMute == "1")
{
IAudioEndpointVolume epv = null;
var epvid = typeof(IAudioEndpointVolume).GUID;
Marshal.ThrowExceptionForHR(dev.Activate(ref epvid, /*CLSCTX_ALL*/ 23, 0, out epv));
epv.SetMute((setMute == "0"), System.Guid.Empty); System.Console.WriteLine(" SetMute: " + (setMute == "0"));
}
}
Marshal.ReleaseComObject(dev);
}
Marshal.ReleaseComObject(deviceCollection);
System.Console.WriteLine();
}
public static DEVICE_SUMMARY getDefaultDeviceSummary(int dataFlow, int role)
{
DEVICE_SUMMARY dev1 = new DEVICE_SUMMARY(); dev1.dataFlow = dataFlow; dev1.role = role;
var enumerator = new MMDeviceEnumeratorComObject() as IMMDeviceEnumerator;
IMMDevice dev = null; Marshal.ThrowExceptionForHR(enumerator.GetDefaultAudioEndpoint(dataFlow, role, out dev));
IPropertyStore propertyStore; dev.OpenPropertyStore(0 /*STGM_READ*/, out propertyStore);
PROPVARIANT property; propertyStore.GetValue(ref PropertyKey.PKEY_Device_FriendlyName, out property);
dev1.FriendlyName = (string)property.Value;
Marshal.ReleaseComObject(propertyStore);
IAudioEndpointVolume epv = null;
var epvid = typeof(IAudioEndpointVolume).GUID;
Marshal.ThrowExceptionForHR(dev.Activate(ref epvid, /*CLSCTX_ALL*/ 23, 0, out epv));
epv.GetMute(out dev1.isMuted);
Marshal.ReleaseComObject(dev);
return(dev1);
}
