public AudioMeterEvent(
string audioDeviceId,
SignalRatio minimumLevel,
System.TimeSpan minimumDuration,
System.TimeSpan period,
System.TimeSpan keepaliveInterval,
System.TimeSpan keepaliveDuration,
Logger logger)
{
MinimumLevel = minimumLevel;
MinimumDuration = minimumDuration;
KeepaliveInterval = keepaliveInterval;
KeepaliveDuration = keepaliveDuration;
Logger = logger;
var deviceEnumerator = new MMDeviceAPI.MMDeviceEnumerator();
MMDeviceAPI.IMMDevice device;
try
{
device = deviceEnumerator.GetDeviceById(audioDeviceId);
}
catch (System.Exception exception)
{
throw new System.Exception("Unable to get audio device using specified ID", exception);
}
IAudioMeterInformation = device.ActivateInterface <EndpointVolume.IAudioMeterInformation>();
Period = period;
if (Period <= System.TimeSpan.Zero)
{
Period = new System.TimeSpan(minimumDuration.Ticks / 8);
device.ActivateInterface <AudioClient.IAudioClient>().GetDevicePeriod(out var defaultDevicePeriod, out var minimumDevicePeriodTicks);
var minimumDevicePeriod = new System.TimeSpan(minimumDevicePeriodTicks);
if (Period < minimumDevicePeriod)
{
Period = minimumDevicePeriod;
}
}
Logger.Log("Using minimum level: " + MinimumLevel + ", minimum duration: " + MinimumDuration + ", period: " + Period + ", keepalive interval: " + KeepaliveInterval + ", keepalive duration: " + KeepaliveDuration);
}
public static MMDeviceAPI.IMMDeviceCollection GetDeviceCollection(this MMDeviceAPI.MMDeviceEnumerator deviceEnumerator, MMDeviceAPI.EDataFlow dataFlow, uint stateMask)
{
deviceEnumerator.EnumAudioEndpoints(dataFlow, stateMask, out var deviceCollection);
return(deviceCollection);
}
public static MMDeviceAPI.IMMDevice GetDeviceById(this MMDeviceAPI.MMDeviceEnumerator deviceEnumerator, string deviceId)
{
deviceEnumerator.GetDevice(deviceId, out var device);
return(device);
}
