Get Default Audio Device

[power1power1]

Hello, How I can get the name of the default Audio Device? Thanks.

[BrewManNH]

http://bit.ly/MpBx4I

[power1power1]

I have googled already ... The links show how to set/change the default Audio Device. I am looking for how to "get" the name of the defualt Audio Device.

[power1power1]

OK, so far, I have figured out that I have to use GetDefaultAudioEndpoint() function and this function has been used in Control Vista+ Master Volume '?do=embed' frameborder='0' data-embedContent>>. I took a few lines from there with no success yet. It shows "0" inststead of the name. Any help is appreciated.

Const $CLSID_MMDeviceEnumerator = "{BCDE0395-E52F-467C-8E3D-C4579291692E}"
Const $IID_IMMDeviceEnumerator = "{A95664D2-9614-4F35-A746-DE8DB63617E6}"
Const $tagIMMDeviceEnumerator = _
    "EnumAudioEndpoints hresult(int;dword;ptr*);" & _
    "GetDefaultAudioEndpoint hresult(int;int;ptr*);" & _
    "GetDevice hresult(wstr;ptr*);" & _
    "RegisterEndpointNotificationCallback hresult(ptr);" & _
    "UnregisterEndpointNotificationCallback hresult(ptr)"
Const $eRender = 0, $eConsole = 0, $pDefaultDevice = 0
$oDevEnum = ObjCreateInterface($CLSID_MMDeviceEnumerator, $IID_IMMDeviceEnumerator, $tagIMMDeviceEnumerator)
$device = $oDevEnum.GetDefaultAudioEndpoint($eRender, $eConsole, $pDefaultDevice)
ConsoleWrite($device)

[power1power1]

I am back on this subject again and I have not had any progress. Just wondering somebody might have a helpful suggestion.

[trancexx]

Something like this:

expandcollapse popup

#include <WinAPICOM.au3>


Global Const $sCLSID_MMDeviceEnumerator = "{BCDE0395-E52F-467C-8E3D-C4579291692E}"
Global Const $sIID_IMMDeviceEnumerator = "{A95664D2-9614-4F35-A746-DE8DB63617E6}"
Global Const $tagIMMDeviceEnumerator = "EnumAudioEndpoints hresult(int;int;ptr*);" & _
        "GetDefaultAudioEndpoint hresult(int;int;ptr*);" & _
        "GetDevice hresult(wstr;ptr*);" & _
        "RegisterEndpointNotificationCallback hresult(ptr);" & _
        "UnregisterEndpointNotificationCallback hresult(ptr);"

Global Const $IID_IMMDevice = "{D666063F-1587-4E43-81F1-B948E807363F}"
Global Const $tagIMMDevice = "Activate hresult(ptr;dword;variant*;ptr*);" & _
        "OpenPropertyStore hresult(dword;ptr*);" & _
        "GetId hresult(ptr*);" & _
        "GetState hresult(dword*);"

Global Const $IID_IPropertyStore = "{886d8eeb-8cf2-4446-8d02-cdba1dbdcf99}"
Global Const $tagIPropertyStore = "GetCount hresult(dword*);" & _
        "GetAt hresult(dword;ptr*);" & _
        "GetValue hresult(struct*;variant*);" & _
        "SetValue hresult(struct*;variant);" & _
        "Commit hresult();"

Global Const $sPKEY_Device_FriendlyName = "{a45c254e-df1c-4efd-8020-67d146a850e0} 14"

Global Const $STGM_READ = 0
Global Const $DEVICE_STATE_ACTIVE = 0x00000001

Global Const $eRender = 0
Global Const $eCapture = 1
Global Const $eAll = 2
Global Const $EDataFlow_enum_count = 3

Global Const $eConsole = 0
Global Const $eMultimedia = 1
Global Const $eCommunications = 2
Global Const $ERole_enum_count = 3

Func _WinAPI_PKEYFromString($sPKEY, $pID = Default)
    Local $tPKEY = DllStructCreate("byte GUID[16]; dword PID;")
    DllCall("propsys.dll", "long", "PSPropertyKeyFromString", "wstr", $sPKEY, "struct*", $tPKEY)
    If $pID <> Default Then DllStructSetData($tPKEY, "PID", $pID)
    Return $tPKEY
EndFunc
;==========================================================

Local $oEnumerator = ObjCreateInterface($sCLSID_MMDeviceEnumerator, $sIID_IMMDeviceEnumerator, $tagIMMDeviceEnumerator)

Local $pDefaultEndpoint
$oEnumerator.GetDefaultAudioEndpoint($eRender, $DEVICE_STATE_ACTIVE, $pDefaultEndpoint)

Local $oEndpoint = ObjCreateInterface($pDefaultEndpoint, $IID_IMMDevice, $tagIMMDevice)

; PropertyStore stores properties
Local $pProps
$oEndpoint.OpenPropertyStore($STGM_READ, $pProps)
$oProps = ObjCreateInterface($pProps, $IID_IPropertyStore, $tagIPropertyStore)

; Collect FriendlyName property
Local $tPKEY_Device_FriendlyName = _WinAPI_PKEYFromString($sPKEY_Device_FriendlyName)
Local $sName
$oProps.GetValue($tPKEY_Device_FriendlyName, $sName)

ConsoleWrite($sName & @CRLF)

[power1power1]

Amazing ... It works ... Thank you! Now, I will go through your code and learn a thing or two

[nacerbaaziz]

thank you verry much

i found that and it do what i want

this is what i found

#include <WinAPICOM.au3>

Global Const $sCLSID_MMDeviceEnumerator = "{BCDE0395-E52F-467C-8E3D-C4579291692E}"
Global Const $sIID_IMMDeviceEnumerator = "{A95664D2-9614-4F35-A746-DE8DB63617E6}"
Global Const $tagIMMDeviceEnumerator = "EnumAudioEndpoints hresult(int;int;ptr*);" & _
"GetDefaultAudioEndpoint hresult(int;int;ptr*);" & _
"GetDevice hresult(wstr;ptr*);" & _
"RegisterEndpointNotificationCallback hresult(ptr);" & _
"UnregisterEndpointNotificationCallback hresult(ptr);"

Global Const $IID_IMMDevice = "{D666063F-1587-4E43-81F1-B948E807363F}"
Global Const $tagIMMDevice = "Activate hresult(ptr;dword;variant*;ptr*);" & _
"OpenPropertyStore hresult(dword;ptr*);" & _
"GetId hresult(ptr*);" & _
"GetState hresult(dword*);"

Global Const $IID_IPropertyStore = "{886d8eeb-8cf2-4446-8d02-cdba1dbdcf99}"
Global Const $tagIPropertyStore = "GetCount hresult(dword*);" & _
"GetAt hresult(dword;ptr*);" & _
"GetValue hresult(struct*;variant*);" & _
"SetValue hresult(struct*;variant);" & _
"Commit hresult();"
Global Const $sPKEY_Device_FriendlyName = "{a45c254e-df1c-4efd-8020-67d146a850e0} 14"

Global Const $STGM_READ = 0
Global Const $DEVICE_STATE_ACTIVE = 0x00000001

Global Const $eRender = 0
Global Const $eCapture = 1
Global Const $eAll = 2
Global Const $EDataFlow_enum_count = 3

Global Const $eConsole = 0
Global Const $eMultimedia = 1
Global Const $eCommunications = 2
Global Const $ERole_enum_count = 3

Func _WinAPI_PKEYFromString($sPKEY, $pID = Default)
Local $tPKEY = DllStructCreate("byte GUID[16]; dword PID;")
DllCall("propsys.dll", "long", "PSPropertyKeyFromString", "wstr", $sPKEY, "struct*", $tPKEY)
If $pID <> Default Then DllStructSetData($tPKEY, "PID", $pID)
Return $tPKEY
EndFunc

func GetSpeaker()
Local $oEnumerator = ObjCreateInterface($sCLSID_MMDeviceEnumerator, $sIID_IMMDeviceEnumerator, $tagIMMDeviceEnumerator)
Local $pDefaultEndpoint
$oEnumerator.GetDefaultAudioEndpoint($eRender, $DEVICE_STATE_ACTIVE, $pDefaultEndpoint)
Local $oEndpoint = ObjCreateInterface($pDefaultEndpoint, $IID_IMMDevice, $tagIMMDevice)
; PropertyStore stores properties
Local $pProps
$oEndpoint.OpenPropertyStore($STGM_READ, $pProps)
$oProps = ObjCreateInterface($pProps, $IID_IPropertyStore, $tagIPropertyStore)
; Collect FriendlyName property
Local $tPKEY_Device_FriendlyName = _WinAPI_PKEYFromString($sPKEY_Device_FriendlyName)
Local $sName
$oProps.GetValue($tPKEY_Device_FriendlyName, $sName)
return $sName
endFunc

thank you an other one

 

[ViciousXUSMC]

You will want to use code tags like Trance did above to make that more readable. 

I have to ask, is there a easy way to change the current device just as easily?

I have like 3 sound cards, and when I connect different interfaces my defaults change all the time.

I would love a fast way to set "recording mode" "web meeting mode" etc where I turn on the proper microphone and audio out device.