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@Trucido
Last active Mar 12, 2019
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<#
volume.ps1 - Get/Set IAudioEndpointVolume
Note: Get-Volume/Set-Volume conflicts with Storage\MSFT_Volume
#>
function GetSet-Volume {
Param(
[Parameter(mandatory=$false)] [float] [ValidateRange(0.000,1.000)] $Value,
[Alias("M*","U*")] [switch] $Mute
)
Set-StrictMode -Version 'Latest'
Add-Type -Language Csharp -TypeDefinition `
@'
using System.Runtime.InteropServices;
[Guid("5CDF2C82-841E-4546-9722-0CF74078229A"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IAudioEndpointVolume {
// f(), g(), ... unused COM method slots.
int f(); int g(); int h(); int i();
int SetMasterVolumeLevelScalar(float fLevel, System.Guid pguidEventContext);
int j();
int GetMasterVolumeLevelScalar(out float pfLevel);
int k(); int l(); int m(); int n();
int SetMute([MarshalAs(UnmanagedType.Bool)] bool bMute, System.Guid pguidEventContext);
int GetMute(out bool pbMute);
}
[Guid("D666063F-1587-4E43-81F1-B948E807363F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IMMDevice {
int Activate(ref System.Guid id, int clsCtx, int activationParams, out IAudioEndpointVolume aev);
}
[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IMMDeviceEnumerator {
int f(); // Unused
int GetDefaultAudioEndpoint(int dataFlow, int role, out IMMDevice endpoint);
}
[ComImport, Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")] class MMDeviceEnumeratorComObject { }
public class Audio {
static IAudioEndpointVolume Vol() {
var enumerator = new MMDeviceEnumeratorComObject() as IMMDeviceEnumerator;
IMMDevice dev = null;
Marshal.ThrowExceptionForHR(enumerator.GetDefaultAudioEndpoint(/*eRender*/ 0, /*eMultimedia*/ 1, out dev));
IAudioEndpointVolume epv = null;
var epvid = typeof(IAudioEndpointVolume).GUID;
Marshal.ThrowExceptionForHR(dev.Activate(ref epvid, /*CLSCTX_ALL*/ 23, 0, out epv));
return epv;
}
public static float Volume {
get {float v = -1; Marshal.ThrowExceptionForHR(Vol().GetMasterVolumeLevelScalar(out v)); return v;}
set {Marshal.ThrowExceptionForHR(Vol().SetMasterVolumeLevelScalar(value, System.Guid.Empty));}
}
public static bool Mute {
get { bool mute; Marshal.ThrowExceptionForHR(Vol().GetMute(out mute)); return mute; }
set { Marshal.ThrowExceptionForHR(Vol().SetMute(value, System.Guid.Empty)); }
}
}
'@
if ($Mute)
{
switch ([Audio]::get_Mute())
{
$True { [Audio]::set_Mute($false) }
$False { [Audio]::set_Mute($true) }
}
}
if ($Value)
{
if ($Value -gt 0) {
[Audio]::set_Mute($false)
[Audio]::set_Volume($Value)
} else {
[Audio]::set_Volume($Value)
}
}
Write-Output "$('Volume: ' + [Audio]::get_Volume())"
Write-Output "$('Muted: ' + [Audio]::get_Mute())"
}
if (!($MyInvocation.InvocationName -eq '.' -or $MyInvocation.Line -eq '')) {
GetSet-Volume @args
}
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