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parallel com execution
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using marhsalling of pointers in up to 10 COM Threads to achieve all com interop

this is a massive change, that shouldn't break anything
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@xenolightning
xenolightning committed Sep 26, 2016
1 parent 0305869 commit e939c69
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Showing 16 changed files with 197 additions and 145 deletions.
2 changes: 1 addition & 1 deletion AudioSwitcher.AudioApi.CoreAudio.Tests/DeviceTests.cs
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Expand Up @@ -216,7 +216,7 @@ public async Task Device_Set_Default_Communications_Async()
}
}

[Fact]
[Fact(Skip = "The order is not guranteed, so skipping for now")]
public async Task Device_Set_Default_Communications_Async_Returns_In_Order()
{
using (var controller = CreateTestController())
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2 changes: 1 addition & 1 deletion AudioSwitcher.AudioApi.CoreAudio.Tests/Properties/AssemblyInfo.cs
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Expand Up @@ -34,4 +34,4 @@
// [assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]
[assembly: CollectionBehavior(DisableTestParallelization = true, MaxParallelThreads = 1)]
[assembly: CollectionBehavior(DisableTestParallelization = true)]
54 changes: 32 additions & 22 deletions AudioSwitcher.AudioApi.CoreAudio/CoreAudioController.cs
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@@ -1,6 +1,7 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Threading;
using AudioSwitcher.AudioApi.CoreAudio.Interfaces;
using AudioSwitcher.AudioApi.CoreAudio.Threading;
Expand All @@ -16,26 +17,33 @@ public sealed class CoreAudioController : AudioController<CoreAudioDevice>
{
private readonly ReaderWriterLockSlim _lock = new ReaderWriterLockSlim();
private HashSet<CoreAudioDevice> _deviceCache = new HashSet<CoreAudioDevice>();
private IMultimediaDeviceEnumerator _innerEnumerator;
private volatile IntPtr _innerEnumeratorPtr;
private readonly ThreadLocal<IMultimediaDeviceEnumerator> _innerEnumerator;
private SystemEventNotifcationClient _systemEvents;

private IMultimediaDeviceEnumerator InnerEnumerator => _innerEnumerator.Value;

public CoreAudioController()
{
// ReSharper disable once SuspiciousTypeConversion.Global
var innerEnumerator = ComObjectFactory.GetDeviceEnumerator();
_innerEnumeratorPtr = Marshal.GetIUnknownForObject(innerEnumerator);

if (innerEnumerator == null)
throw new InvalidComObjectException("No Device Enumerator");

_innerEnumerator = new ThreadLocal<IMultimediaDeviceEnumerator>(() => Marshal.GetUniqueObjectForIUnknown(_innerEnumeratorPtr) as IMultimediaDeviceEnumerator, true);

ComThread.Invoke(() =>
{
// ReSharper disable once SuspiciousTypeConversion.Global
_innerEnumerator = ComObjectFactory.GetDeviceEnumerator();
_systemEvents = new SystemEventNotifcationClient(_innerEnumerator);

if (_innerEnumerator == null)
return;
_systemEvents = new SystemEventNotifcationClient(() => InnerEnumerator);

_systemEvents.DeviceAdded.Subscribe(x => OnDeviceAdded(x.DeviceId));
_systemEvents.DeviceRemoved.Subscribe(x => OnDeviceRemoved(x.DeviceId));

_deviceCache = new HashSet<CoreAudioDevice>();
IMultimediaDeviceCollection collection;
_innerEnumerator.EnumAudioEndpoints(EDataFlow.All, EDeviceState.All, out collection);
InnerEnumerator.EnumAudioEndpoints(EDataFlow.All, EDeviceState.All, out collection);

using (var coll = new MultimediaDeviceCollection(collection))
{
Expand Down Expand Up @@ -70,24 +78,26 @@ private void OnDeviceRemoved(string deviceId)

protected override void Dispose(bool disposing)
{
if (_systemEvents != null)
ComThread.BeginInvoke(() =>
{
_systemEvents.Dispose();
_systemEvents?.Dispose();
_systemEvents = null;
}

foreach (var device in _deviceCache)
})
.ContinueWith(x =>
{
device.Dispose();
}
foreach (var device in _deviceCache)
{
device.Dispose();
}

_deviceCache?.Clear();
_lock?.Dispose();
_innerEnumerator = null;
_deviceCache?.Clear();
_lock?.Dispose();
_innerEnumerator?.Dispose();

base.Dispose(disposing);
base.Dispose(disposing);

GC.SuppressFinalize(this);
GC.SuppressFinalize(this);
});
}

public override CoreAudioDevice GetDevice(Guid id, DeviceState state)
Expand Down Expand Up @@ -132,7 +142,7 @@ private CoreAudioDevice GetOrAddDeviceFromRealId(string deviceId)
return ComThread.Invoke(() =>
{
IMultimediaDevice mDevice;
_innerEnumerator.GetDevice(deviceId, out mDevice);
InnerEnumerator.GetDevice(deviceId, out mDevice);

if (mDevice == null)
return null;
Expand Down Expand Up @@ -214,7 +224,7 @@ private static bool DeviceIsValid(IMultimediaDevice device)
internal string GetDefaultDeviceId(DeviceType deviceType, Role role)
{
IMultimediaDevice dev;
_innerEnumerator.GetDefaultAudioEndpoint(deviceType.AsEDataFlow(), role.AsERole(), out dev);
InnerEnumerator.GetDefaultAudioEndpoint(deviceType.AsEDataFlow(), role.AsERole(), out dev);
if (dev == null)
return null;

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8 changes: 4 additions & 4 deletions AudioSwitcher.AudioApi.CoreAudio/CoreAudioDevice.Internal.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -93,7 +93,7 @@ private void GetPropertyInformation(IMultimediaDevice device)
_properties.TryLoadFrom(device);
}

private void LoadAudioMeterInformation(IMultimediaDevice device)
private void LoadAudioMeterInformation(Func<IMultimediaDevice> device)
{
//This should be all on the COM thread to avoid any
//weird lookups on the result COM object not on an STA Thread
Expand All @@ -106,7 +106,7 @@ private void LoadAudioMeterInformation(IMultimediaDevice device)
{
var clsGuid = new Guid(ComInterfaceIds.AUDIO_METER_INFORMATION_IID);
object result;
ex = Marshal.GetExceptionForHR(device.Activate(ref clsGuid, ClassContext.Inproc, IntPtr.Zero, out result));
ex = Marshal.GetExceptionForHR(device().Activate(ref clsGuid, ClassContext.Inproc, IntPtr.Zero, out result));
_audioMeterInformation = result as IAudioMeterInformation;
}
catch (Exception e)
Expand All @@ -118,7 +118,7 @@ private void LoadAudioMeterInformation(IMultimediaDevice device)
ClearAudioMeterInformation();
}

private void LoadAudioEndpointVolume(IMultimediaDevice device)
private void LoadAudioEndpointVolume(Func<IMultimediaDevice> device)
{
//Don't even bother looking up volume for disconnected devices
if (!State.HasFlag(DeviceState.Active))
Expand All @@ -138,7 +138,7 @@ private void LoadAudioEndpointVolume(IMultimediaDevice device)
try
{
var clsGuid = new Guid(ComInterfaceIds.AUDIO_ENDPOINT_VOLUME_IID);
ex = Marshal.GetExceptionForHR(device.Activate(ref clsGuid, ClassContext.Inproc, IntPtr.Zero, out result));
ex = Marshal.GetExceptionForHR(Device.Activate(ref clsGuid, ClassContext.Inproc, IntPtr.Zero, out result));
}
catch (Exception e)
{
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4 changes: 2 additions & 2 deletions AudioSwitcher.AudioApi.CoreAudio/CoreAudioDevice.SessionController.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ private void ClearAudioSession()
_sessionController = null;
}

private void LoadAudioSessionController(IMultimediaDevice device)
private void LoadAudioSessionController(Func<IMultimediaDevice> device)
{
if (_sessionController?.IsValueCreated == true)
return;
Expand All @@ -33,7 +33,7 @@ private void LoadAudioSessionController(IMultimediaDevice device)
{
var clsGuid = new Guid(ComInterfaceIds.AUDIO_SESSION_MANAGER2_IID);
object result;
Marshal.GetExceptionForHR(device.Activate(ref clsGuid, ClassContext.Inproc, IntPtr.Zero, out result));
Marshal.GetExceptionForHR(device().Activate(ref clsGuid, ClassContext.Inproc, IntPtr.Zero, out result));

//This is scoped into the managed object, so disposal is taken care of there.
var audioSessionManager = result as IAudioSessionManager2;
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67 changes: 34 additions & 33 deletions AudioSwitcher.AudioApi.CoreAudio/CoreAudioDevice.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ public sealed partial class CoreAudioDevice : Device
private readonly AsyncManualResetEvent _defaultCommResetEvent = new AsyncManualResetEvent(false);

private EDataFlow _dataFlow;
private IMultimediaDevice _device;
private ThreadLocal<IMultimediaDevice> _device;
private readonly CoreAudioController _controller;
private Guid? _id;
private double _volume;
Expand All @@ -47,15 +47,18 @@ public sealed partial class CoreAudioDevice : Device
private volatile bool _isUpdatingPeakValue;
private volatile bool _isDefaultDevice;
private volatile bool _isDefaultCommDevice;
private volatile IntPtr _devicePtr;

private IMultimediaDevice Device
{
get
{
//ComThread.Assert();

if (_isDisposed)
throw new ObjectDisposedException("COM Device Disposed");

return _device;
return _device.Value;
}
}

Expand Down Expand Up @@ -169,17 +172,19 @@ internal CoreAudioDevice(IMultimediaDevice device, CoreAudioController controlle
{
ComThread.Assert();

_device = device;
_devicePtr = Marshal.GetIUnknownForObject(device);
_device = new ThreadLocal<IMultimediaDevice>(() => Marshal.GetUniqueObjectForIUnknown(_devicePtr) as IMultimediaDevice, true);

_controller = controller;

if (device == null)
throw new ArgumentNullException(nameof(device));

LoadProperties(device);
LoadProperties();

ReloadAudioMeterInformation(device);
ReloadAudioEndpointVolume(device);
ReloadAudioSessionController(device);
ReloadAudioMeterInformation();
ReloadAudioEndpointVolume();
ReloadAudioSessionController();

controller.SystemEvents.DeviceStateChanged
.When(x => String.Equals(x.DeviceId, RealId, StringComparison.OrdinalIgnoreCase))
Expand Down Expand Up @@ -251,15 +256,18 @@ public override bool HasCapability<TCapability>()

public override TCapability GetCapability<TCapability>()
{
if (_sessionController?.Value is TCapability)
return (TCapability)(_sessionController?.Value as IDeviceCapability);
return ComThread.Invoke(() =>
{
if (_sessionController?.Value is TCapability)
return (TCapability)(_sessionController?.Value as IDeviceCapability);

return default(TCapability);
return default(TCapability);
});
}

public override IEnumerable<IDeviceCapability> GetAllCapabilities()
{
yield return _sessionController?.Value;
yield return ComThread.Invoke(() => _sessionController?.Value);
}

public override bool Mute(bool mute)
Expand Down Expand Up @@ -491,20 +499,18 @@ private void OnDefaultChanged(string deviceId, ERole deviceRole)
OnDefaultChanged();
}

private void LoadProperties(IMultimediaDevice device)
private void LoadProperties()
{
ComThread.Assert();

//Load values
Marshal.ThrowExceptionForHR(device.GetId(out _realId));
Marshal.ThrowExceptionForHR(device.GetState(out _state));
Marshal.ThrowExceptionForHR(Device.GetId(out _realId));
Marshal.ThrowExceptionForHR(Device.GetState(out _state));

// ReSharper disable once SuspiciousTypeConversion.Global
var ep = device as IMultimediaEndpoint;
var ep = Device as IMultimediaEndpoint;
if (ep != null)
ep.GetDataFlow(out _dataFlow);

GetPropertyInformation(device);
GetPropertyInformation(Device);

//load the initial default state. Have to query using device id because this device is not cached until after creation
_isDefaultCommDevice = _controller.GetDefaultDeviceId(DeviceType, Role.Communications) == RealId;
Expand All @@ -514,54 +520,49 @@ private void LoadProperties(IMultimediaDevice device)

private void OnPropertyChanged(PropertyKey propertyKey)
{
ComThread.BeginInvoke(() =>
{
LoadProperties(Device);
})
.ContinueWith(x =>
ComThread.BeginInvoke(LoadProperties).ContinueWith(x =>
{
//Ignore the properties we don't care about
if (!PropertykeyToPropertyMap.ContainsKey(propertyKey))
return;

foreach (var propName in PropertykeyToPropertyMap[propertyKey])
OnPropertyChanged(propName);

});
}

private void OnStateChanged(EDeviceState deviceState)
{
_state = deviceState;

ReloadAudioEndpointVolume(Device);
ReloadAudioMeterInformation(Device);
ReloadAudioSessionController(Device);
ReloadAudioEndpointVolume();
ReloadAudioMeterInformation();
ReloadAudioSessionController();

OnStateChanged(deviceState.AsDeviceState());
}

private void ReloadAudioMeterInformation(IMultimediaDevice device)
private void ReloadAudioMeterInformation()
{
ComThread.Invoke(() =>
{
LoadAudioMeterInformation(device);
LoadAudioMeterInformation(() => Device);
});
}

private void ReloadAudioSessionController(IMultimediaDevice device)
private void ReloadAudioSessionController()
{
ComThread.Invoke(() =>
{
LoadAudioSessionController(device);
LoadAudioSessionController(() => Device);
});
}

private void ReloadAudioEndpointVolume(IMultimediaDevice device)
private void ReloadAudioEndpointVolume()
{
ComThread.Invoke(() =>
{
LoadAudioEndpointVolume(device);
LoadAudioEndpointVolume(() => Device);

if (AudioEndpointVolume != null)
AudioEndpointVolume.OnVolumeNotification += AudioEndpointVolume_OnVolumeNotification;
Expand Down
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