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PolicyConfig class to manipulate Windows audio devices #398

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PolicyConfig class to manipulate Windows audio devices #398

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347 changes: 347 additions & 0 deletions CSCore/CoreAudioAPI/PolicyConfig.cs
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Original file line number Diff line number Diff line change
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using System;
using System.Runtime.InteropServices;

namespace CSCore.CoreAudioAPI
{
internal static class ComInterfaceIds
{
internal const string UNKNOWN_IID = "00000000-0000-0000-C000-000000000046";

internal const string POLICY_CONFIG_CID = "870AF99C-171D-4F9E-AF0D-E63DF40C2BC9";

internal const string POLICY_CONFIG_VISTA_IID = "568B9108-44BF-40B4-9006-86AFE5B5A620";
internal const string POLICY_CONFIG_7_IID = "F8679F50-850A-41CF-9C72-430F290290C8";
internal const string POLICY_CONFIG_X_IID = "CA286FC3-91FD-42C3-8E9B-CAAFA66242E3";
internal const string POLICY_CONFIG_X_RS_IID = "00632A31-4D49-4167-8AE1-27F82CE135B1";
internal const string POLICY_CONFIG_X_RS2_IID = "098FF37B-1062-4B1A-AD73-2A2D530FEAB6";
internal const string POLICY_CONFIG_X_RS3_IID = "5731289F-3E89-4209-86BE-6599A8E05E67";
}

[ComImport, Guid(ComInterfaceIds.POLICY_CONFIG_VISTA_IID),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IPolicyConfig
{
[PreserveSig]
int GetMixFormat(string pszDeviceName, IntPtr ppFormat);

[PreserveSig]
int GetDeviceFormat(string pszDeviceName, bool bDefault, IntPtr ppFormat);

[PreserveSig]
int ResetDeviceFormat(string pszDeviceName);

[PreserveSig]
int SetDeviceFormat(string pszDeviceName, IntPtr pEndpointFormat, IntPtr MixFormat);

[PreserveSig]
int GetProcessingPeriod(string pszDeviceName, bool bDefault, IntPtr pmftDefaultPeriod, IntPtr pmftMinimumPeriod);

[PreserveSig]
int SetProcessingPeriod(string pszDeviceName, IntPtr pmftPeriod);

[PreserveSig]
int GetShareMode(string pszDeviceName, IntPtr pMode);

[PreserveSig]
int SetShareMode(string pszDeviceName, IntPtr mode);

[PreserveSig]
int GetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetDefaultEndpoint(string pszDeviceName, Role role);

[PreserveSig]
int SetEndpointVisibility(string pszDeviceName, bool bVisible);
}

[ComImport, Guid(ComInterfaceIds.POLICY_CONFIG_7_IID),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IPolicyConfig1
{
[PreserveSig]
int GetMixFormat(string pszDeviceName, IntPtr ppFormat);

[PreserveSig]
int GetDeviceFormat(string pszDeviceName, bool bDefault, IntPtr ppFormat);

[PreserveSig]
int ResetDeviceFormat(string pszDeviceName);

[PreserveSig]
int SetDeviceFormat(string pszDeviceName, IntPtr pEndpointFormat, IntPtr MixFormat);

[PreserveSig]
int GetProcessingPeriod(string pszDeviceName, bool bDefault, IntPtr pmftDefaultPeriod, IntPtr pmftMinimumPeriod);

[PreserveSig]
int SetProcessingPeriod(string pszDeviceName, IntPtr pmftPeriod);

[PreserveSig]
int GetShareMode(string pszDeviceName, IntPtr pMode);

[PreserveSig]
int SetShareMode(string pszDeviceName, IntPtr mode);

[PreserveSig]
int GetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetDefaultEndpoint(string pszDeviceName, Role role);

[PreserveSig]
int SetEndpointVisibility(string pszDeviceName, bool bVisible);
}

[ComImport, Guid(ComInterfaceIds.POLICY_CONFIG_X_IID),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IPolicyConfig2
{
[PreserveSig]
int GetMixFormat(string pszDeviceName, IntPtr ppFormat);

[PreserveSig]
int GetDeviceFormat(string pszDeviceName, bool bDefault, IntPtr ppFormat);

[PreserveSig]
int ResetDeviceFormat(string pszDeviceName);

[PreserveSig]
int SetDeviceFormat(string pszDeviceName, IntPtr pEndpointFormat, IntPtr MixFormat);

[PreserveSig]
int GetProcessingPeriod(string pszDeviceName, bool bDefault, IntPtr pmftDefaultPeriod, IntPtr pmftMinimumPeriod);

[PreserveSig]
int SetProcessingPeriod(string pszDeviceName, IntPtr pmftPeriod);

[PreserveSig]
int GetShareMode(string pszDeviceName, IntPtr pMode);

[PreserveSig]
int SetShareMode(string pszDeviceName, IntPtr mode);

[PreserveSig]
int GetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetDefaultEndpoint(string pszDeviceName, Role role);

[PreserveSig]
int SetEndpointVisibility(string pszDeviceName, bool bVisible);
}

[ComImport, Guid(ComInterfaceIds.POLICY_CONFIG_X_RS_IID),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IPolicyConfig3
{
[PreserveSig]
int GetMixFormat(string pszDeviceName, IntPtr ppFormat);

[PreserveSig]
int GetDeviceFormat(string pszDeviceName, bool bDefault, IntPtr ppFormat);

[PreserveSig]
int ResetDeviceFormat(string pszDeviceName);

[PreserveSig]
int SetDeviceFormat(string pszDeviceName, IntPtr pEndpointFormat, IntPtr MixFormat);

[PreserveSig]
int GetProcessingPeriod(string pszDeviceName, bool bDefault, IntPtr pmftDefaultPeriod, IntPtr pmftMinimumPeriod);

[PreserveSig]
int SetProcessingPeriod(string pszDeviceName, IntPtr pmftPeriod);

[PreserveSig]
int GetShareMode(string pszDeviceName, IntPtr pMode);

[PreserveSig]
int SetShareMode(string pszDeviceName, IntPtr mode);

[PreserveSig]
int GetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetDefaultEndpoint(string pszDeviceName, Role role);

[PreserveSig]
int SetEndpointVisibility(string pszDeviceName, bool bVisible);
}

[ComImport, Guid(ComInterfaceIds.POLICY_CONFIG_X_RS2_IID),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IPolicyConfig4
{
[PreserveSig]
int GetMixFormat(string pszDeviceName, IntPtr ppFormat);

[PreserveSig]
int GetDeviceFormat(string pszDeviceName, bool bDefault, IntPtr ppFormat);

[PreserveSig]
int ResetDeviceFormat(string pszDeviceName);

[PreserveSig]
int SetDeviceFormat(string pszDeviceName, IntPtr pEndpointFormat, IntPtr MixFormat);

[PreserveSig]
int GetProcessingPeriod(string pszDeviceName, bool bDefault, IntPtr pmftDefaultPeriod, IntPtr pmftMinimumPeriod);

[PreserveSig]
int SetProcessingPeriod(string pszDeviceName, IntPtr pmftPeriod);

[PreserveSig]
int GetShareMode(string pszDeviceName, IntPtr pMode);

[PreserveSig]
int SetShareMode(string pszDeviceName, IntPtr mode);

[PreserveSig]
int GetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetDefaultEndpoint(string pszDeviceName, Role role);

[PreserveSig]
int SetEndpointVisibility(string pszDeviceName, bool bVisible);
}

[ComImport, Guid(ComInterfaceIds.POLICY_CONFIG_X_RS3_IID),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IPolicyConfig5
{
[PreserveSig]
int GetMixFormat(string pszDeviceName, IntPtr ppFormat);

[PreserveSig]
int GetDeviceFormat(string pszDeviceName, bool bDefault, IntPtr ppFormat);

[PreserveSig]
int ResetDeviceFormat(string pszDeviceName);

[PreserveSig]
int SetDeviceFormat(string pszDeviceName, IntPtr pEndpointFormat, IntPtr MixFormat);

[PreserveSig]
int GetProcessingPeriod(string pszDeviceName, bool bDefault, IntPtr pmftDefaultPeriod, IntPtr pmftMinimumPeriod);

[PreserveSig]
int SetProcessingPeriod(string pszDeviceName, IntPtr pmftPeriod);

[PreserveSig]
int GetShareMode(string pszDeviceName, IntPtr pMode);

[PreserveSig]
int SetShareMode(string pszDeviceName, IntPtr mode);

[PreserveSig]
int GetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetDefaultEndpoint(string pszDeviceName, Role role);

[PreserveSig]
int SetEndpointVisibility(string pszDeviceName, bool bVisible);
}

[ComImport, Guid(ComInterfaceIds.UNKNOWN_IID),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IPolicyConfigX
{
[PreserveSig]
int GetMixFormat(string pszDeviceName, IntPtr ppFormat);

[PreserveSig]
int GetDeviceFormat(string pszDeviceName, bool bDefault, IntPtr ppFormat);

[PreserveSig]
int ResetDeviceFormat(string pszDeviceName);

[PreserveSig]
int SetDeviceFormat(string pszDeviceName, IntPtr pEndpointFormat, IntPtr MixFormat);

[PreserveSig]
int GetProcessingPeriod(string pszDeviceName, bool bDefault, IntPtr pmftDefaultPeriod, IntPtr pmftMinimumPeriod);

[PreserveSig]
int SetProcessingPeriod(string pszDeviceName, IntPtr pmftPeriod);

[PreserveSig]
int GetShareMode(string pszDeviceName, IntPtr pMode);

[PreserveSig]
int SetShareMode(string pszDeviceName, IntPtr mode);

[PreserveSig]
int GetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetPropertyValue(string pszDeviceName, bool bFxStore, IntPtr key, IntPtr pv);

[PreserveSig]
int SetDefaultEndpoint(string pszDeviceName, Role role);

[PreserveSig]
int SetEndpointVisibility(string pszDeviceName, bool bVisible);
}

[ComImport, Guid(ComInterfaceIds.POLICY_CONFIG_CID)]
internal class PolicyConfigClient { }

static class PolicyConfig
{
/// <summary>
/// The SetDefaultDevice method sets an audio device as the default device for the role.
/// </summary>
/// <param name="deviceId">The device id that identifies the audio endpoint device.</param>
/// <param name="role">The device role of the audio endpoint device.</param>
public static void SetDefaultDevice(string deviceId, Role role)
{
PolicyConfigClient policyConfigClient = new PolicyConfigClient();

switch (policyConfigClient)
{
case IPolicyConfig config:
Marshal.ThrowExceptionForHR(config.SetDefaultEndpoint(deviceId, role));
break;
case IPolicyConfig1 config:
Marshal.ThrowExceptionForHR(config.SetDefaultEndpoint(deviceId, role));
break;
case IPolicyConfig2 config:
Marshal.ThrowExceptionForHR(config.SetDefaultEndpoint(deviceId, role));
break;
case IPolicyConfig3 config:
Marshal.ThrowExceptionForHR(config.SetDefaultEndpoint(deviceId, role));
break;
case IPolicyConfig4 config:
Marshal.ThrowExceptionForHR(config.SetDefaultEndpoint(deviceId, role));
break;
case IPolicyConfig5 config:
Marshal.ThrowExceptionForHR(config.SetDefaultEndpoint(deviceId, role));
break;
case IPolicyConfigX config:
Marshal.ThrowExceptionForHR(config.SetDefaultEndpoint(deviceId, role));
break;
}
}
}
}