private void ProcessAdded(ObservableProcess process)
{
if (process == null)
{
throw new ArgumentNullException(nameof(process));
}
while (applicationDevicePreferences == null)
{
Task.Delay(250);
}
SharedModels.ApplicationDevicePreference applicationDevicePreference = applicationDevicePreferences.Applications.FirstOrDefault(x => x.Name == process.ProcessName);
if (applicationDevicePreference == null)
{
applicationDevicePreference = new SharedModels.ApplicationDevicePreference();
}
AudioInterface preferredRender = GetApplicationDevicePreference(DataFlow.Render, applicationDevicePreference, process);
if (preferredRender != null)
{
ChangeDefaultApplicationDevice(preferredRender, process);
}
AudioInterface preferredCapture = GetApplicationDevicePreference(DataFlow.Capture, applicationDevicePreference, process);
if (preferredCapture != null)
{
ChangeDefaultApplicationDevice(preferredCapture, process);
}
}
private void CheckApplicationDeviceChanges()
{
foreach (ObservableProcess process in ProcessCollection.Processes)
{
AudioInterface windowsPreferredRender = GetDefaultApplicationDevice(DataFlow.Render, process);
AudioInterface windowsPreferredCapture = GetDefaultApplicationDevice(DataFlow.Capture, process);
SharedModels.ApplicationDevicePreference applicationDevicePreference = applicationDevicePreferences.Applications.FirstOrDefault(x => x.Name == process.ProcessName);
string preferredRenderId = applicationDevicePreference?.Devices?.RenderDeviceId;
string preferredCaptureId = applicationDevicePreference?.Devices?.CaptureDeviceId;
bool windowsThinksDefault = windowsPreferredRender == null && windowsPreferredCapture == null;
bool noPreferences = preferredRenderId == null && preferredCaptureId == null;
// There is agreement that this process uses the default devices.
if (noPreferences && windowsThinksDefault)
{
continue;
}
// Windows doesn't think this process uses the default device and we don't have any preferences for the process.
if (applicationDevicePreference == default && !windowsThinksDefault)
{
ChangeDefaultApplicationDevice(windowsPreferredRender, process);
ChangeDefaultApplicationDevice(windowsPreferredCapture, process);
}
// Windows doesn't think this process uses the default device. We agree, but we disagree on the preferred audio device.
else if (!windowsThinksDefault)
{
bool changeNeeded = preferredRenderId != windowsPreferredRender?.ID;
changeNeeded = changeNeeded || preferredCaptureId != windowsPreferredCapture?.ID;
if (changeNeeded)
{
Trace.WriteLine($"Preference conflict detected between Windows Settings and Stream Controller for process {process.ProcessName}.");
}
if (process.AudioDeviceTogglingNeeded)
{
ToggleDefaultApplicationDevice(process);
process.AudioDeviceTogglingNeeded = false;
}
}
// Windows thinks the process uses the default device. We disagree and are waiting for the process to make a sound.
else if (windowsThinksDefault)
{
EarTrumpet.DataModel.WindowsAudio.Internal.AudioPolicyConfig audioPolicyConfig;
if (preferredRenderId != null)
{
audioPolicyConfig = new EarTrumpet.DataModel.WindowsAudio.Internal.AudioPolicyConfig(DataFlow.Render);
audioPolicyConfig.SetDefaultEndPoint(preferredRenderId, process.Id);
}
if (preferredCaptureId != null)
{
audioPolicyConfig = new EarTrumpet.DataModel.WindowsAudio.Internal.AudioPolicyConfig(DataFlow.Capture);
audioPolicyConfig.SetDefaultEndPoint(preferredCaptureId, process.Id);
}
}
}
}
void IMMNotificationClient.OnDeviceRemoved(string deviceId)
{
AudioInterface audioInterface = GetAudioInterfaceById(deviceId);
mContext.Send(
x => Devices.Remove(GetAudioInterfaceById(deviceId))
, null);
if (audioInterface.IsActive)
{
mContext.Send(
x => ActiveDevices.Remove(audioInterface),
null);
}
}
void IMMNotificationClient.OnDeviceAdded(string pwstrDeviceId)
{
AudioInterface device = new AudioInterface
{
Device = _Enumerator.GetDevice(pwstrDeviceId)
};
mContext.Send(
x => Devices.Add(device)
, null);
if (device.IsActive)
{
mContext.Send(
x => ActiveDevices.Add(device),
null);
}
}
public static void ChangeDefaultApplicationDevice(AudioInterface audioInterface, ObservableProcess process)
{
if (audioInterface == null)
{
throw new ArgumentNullException(nameof(audioInterface));
}
if (process == null)
{
throw new ArgumentNullException(nameof(process));
}
EarTrumpet.DataModel.WindowsAudio.Internal.AudioPolicyConfig audioPolicyConfig = new EarTrumpet.DataModel.WindowsAudio.Internal.AudioPolicyConfig(audioInterface.DataFlow);
audioPolicyConfig.SetDefaultEndPoint(audioInterface.ID, process.Id);
Instance.RemoveOldApplicationDevicePreference(process, audioInterface);
Instance.AddDeviceApplicationPreference(audioInterface, process);
Instance.AddApplicationDevicePreference(process, audioInterface);
}
private void AddDeviceApplicationPreference(AudioInterface audioInterface, ObservableProcess process)
{
SharedModels.DeviceApplicationPreference deviceApplicationPreference = deviceApplicationPreferences.Devices.FirstOrDefault(x => x.Id == audioInterface.ID);
if (deviceApplicationPreference == default)
{
deviceApplicationPreference = new SharedModels.DeviceApplicationPreference()
{
Id = audioInterface.ID,
Applications = new List <string>()
};
deviceApplicationPreferences.Devices.Add(deviceApplicationPreference);
}
if (!deviceApplicationPreference.Applications.Contains(process.ProcessName))
{
deviceApplicationPreference.Applications.Add(process.ProcessName);
}
jsonDataDirty = true;
}
private void AddApplicationDevicePreference(ObservableProcess process, AudioInterface audioInterface)
{
SharedModels.ApplicationDevicePreference applicationDevicePreference = applicationDevicePreferences.Applications.FirstOrDefault(x => x.Name == process.ProcessName);
if (applicationDevicePreference == default)
{
applicationDevicePreference = new SharedModels.ApplicationDevicePreference()
{
Name = process.ProcessName,
Devices = new SharedModels.DefaultDevicePreference()
};
applicationDevicePreferences.Applications.Add(applicationDevicePreference);
}
_ = audioInterface.DataFlow switch
{
DataFlow.Render => applicationDevicePreference.Devices.RenderDeviceId = audioInterface.ID,
DataFlow.Capture => applicationDevicePreference.Devices.CaptureDeviceId = audioInterface.ID,
_ => null
};
jsonDataDirty = true;
}
private void DevicesEnumerated(MMDeviceCollection collection)
{
_Enumerator.RegisterEndpointNotificationCallback(_NotificationClient);
foreach (MMDevice device in collection)
{
AudioInterface audioDevice = new AudioInterface
{
Device = device
};
_Context.Send(
x => Devices.Add(audioDevice),
null);
if (audioDevice.IsActive)
{
_Context.Send(
x => ActiveDevices.Add(audioDevice),
null);
}
}
UpdateDefaultDevice(DataFlow.Render, _Enumerator.GetDefaultAudioEndpoint(DataFlow.Render, Role.Console).ID);
UpdateDefaultDevice(DataFlow.Capture, _Enumerator.GetDefaultAudioEndpoint(DataFlow.Capture, Role.Console).ID);
DevicesAreEnumerated = true;
NotifyCollectionEnumerated();
RestoreDeviceApplicationPreferences();
bool processesEnumerated = false;
_Context.Send(
x => processesEnumerated = ProcessCollection.Instance.ProcessesAreEnumerated,
null);
if (!processesEnumerated)
{
ProcessCollection.Instance.CollectionEnumerated += Processes_CollectionEnumerated;
}
else
{
Processes_CollectionEnumerated(this, EventArgs.Empty);
}
ProcessCollection.Instance.CollectionChanged += Processes_CollectionChanged;
}
void IMMNotificationClient.OnDeviceStateChanged(string deviceId, DeviceState newState)
{
AudioInterface audioInterface = GetAudioInterfaceById(deviceId);
if (audioInterface != null)
{
audioInterface.SetProperties(newState);
}
if (newState != DeviceState.Active)
{
if (ActiveDevices.Contains(audioInterface))
{
mContext.Send(
x => ActiveDevices.Remove(audioInterface),
null);
}
return;
}
mContext.Send(
x => ActiveDevices.Add(audioInterface),
null);
SharedModels.DeviceApplicationPreference deviceApplicationPreference = Instance.deviceApplicationPreferences.Devices.FirstOrDefault(x => x.Id == deviceId);
if (deviceApplicationPreference == default)
{
return;
}
foreach (string applicationName in deviceApplicationPreference.Applications)
{
ObservableProcess[] processes = ProcessCollection.Processes.Where(x => x.ProcessName == applicationName).ToArray();
foreach (ObservableProcess process in processes)
{
ChangeDefaultApplicationDevice(audioInterface, process);
}
}
}
private void RemoveOldApplicationDevicePreference(ObservableProcess process, AudioInterface audioInterface)
{
SharedModels.ApplicationDevicePreference applicationDevicePreference = applicationDevicePreferences.Applications.FirstOrDefault(x => x.Name == process.ProcessName);
if (applicationDevicePreference == default)
{
return;
}
string previousPreferredInterface = null;
switch (audioInterface.DataFlow)
{
case DataFlow.Render:
previousPreferredInterface = applicationDevicePreference.Devices.RenderDeviceId;
applicationDevicePreference.Devices.RenderDeviceId = null;
break;
case DataFlow.Capture:
previousPreferredInterface = applicationDevicePreference.Devices.CaptureDeviceId;
applicationDevicePreference.Devices.CaptureDeviceId = null;
break;
default:
return;
}
if (applicationDevicePreference.Devices.RenderDeviceId == null && applicationDevicePreference.Devices.CaptureDeviceId == null)
{
applicationDevicePreferences.Applications.Remove(applicationDevicePreference);
}
SharedModels.DeviceApplicationPreference deviceApplicationPreference = deviceApplicationPreferences.Devices.FirstOrDefault(x => x.Id == previousPreferredInterface);
if (deviceApplicationPreference == default)
{
return;
}
deviceApplicationPreference.Applications.Remove(process.ProcessName);
if (deviceApplicationPreference.Applications.Count == 0)
{
deviceApplicationPreferences.Devices.Remove(deviceApplicationPreference);
}
}
public static void ClearApplicationDefaultDevice(DataFlow dataFlow, ObservableProcess process)
{
if (process == null)
{
throw new ArgumentNullException(nameof(process));
}
AudioInterface dataFlowInterface = dataFlow switch
{
DataFlow.Render => Instance.DefaultRender,
DataFlow.Capture => Instance.DefaultCapture,
_ => null
};
if (dataFlowInterface == null)
{
throw new ArgumentException($"{Enum.GetName(typeof(DataFlow),dataFlow)} is not {Enum.GetName(typeof(DataFlow), DataFlow.Render)} or {Enum.GetName(typeof(DataFlow), DataFlow.Capture)}.", nameof(dataFlow));
}
EarTrumpet.DataModel.WindowsAudio.Internal.AudioPolicyConfig audioPolicyConfig = new EarTrumpet.DataModel.WindowsAudio.Internal.AudioPolicyConfig(dataFlow);
audioPolicyConfig.SetDefaultEndPoint(String.Empty, process.Id);
Instance.RemoveOldApplicationDevicePreference(process, dataFlowInterface);
}
public static void ToggleDefaultApplicationDevice(ObservableProcess process)
{
if (process == null)
{
throw new ArgumentNullException(nameof(process));
}
AudioInterface renderDevice = GetDefaultApplicationDevice(DataFlow.Render, process);
if (renderDevice != null)
{
Trace.WriteLine($"Toggling PID {process.Id} render device to default and back to {renderDevice.FriendlyName}.");
ChangeDefaultApplicationDevice(Instance.DefaultRender, process);
ChangeDefaultApplicationDevice(renderDevice, process);
}
AudioInterface captureDevice = GetDefaultApplicationDevice(DataFlow.Capture, process);
if (captureDevice != null)
{
Trace.WriteLine($"Toggling PID {process.Id} capture device to default and back to {captureDevice.FriendlyName}.");
ChangeDefaultApplicationDevice(Instance.DefaultCapture, process);
ChangeDefaultApplicationDevice(captureDevice, process);
}
}
private AudioInterface GetApplicationDevicePreference(DataFlow dataFlow, SharedModels.ApplicationDevicePreference applicationDevicePreference, ObservableProcess process)
{
string preferredInterfaceId = dataFlow switch
{
DataFlow.Render => applicationDevicePreference?.Devices?.RenderDeviceId,
DataFlow.Capture => applicationDevicePreference?.Devices?.CaptureDeviceId,
_ => null
};
if (preferredInterfaceId != null)
{
return(GetAudioInterfaceById(preferredInterfaceId));
}
AudioInterface audioInterface = GetDefaultApplicationDevice(dataFlow, process);
if (audioInterface != null)
{
RemoveOldApplicationDevicePreference(process, audioInterface);
AddApplicationDevicePreference(process, audioInterface);
AddDeviceApplicationPreference(audioInterface, process);
return(audioInterface);
}
return(null);
}