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Subz

Get Audio/Microphone Devices [Solved]

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Subz
Posted (edited)

Hello all.

in the process of packaging an application (Voip) and looking at trying to automate capturing the following information to add to a config.xml file:

Default: Playback Device Name and Guid
Example:
Name: Speakers (Realtek High Definition Audio)
Guid: {0.0.0.00000000}.{a46ce930-4dd3-49b5-8e8e-7c8a2fdc3925}

Default Microphone Device Name and Guid
Example:
Name: Microphone (Realtek High Definition Audio)
Guid: {0.0.1.00000000}.{cff6f838-33ce-4c2d-9f77-98f4e19e4a75}

I've seen the following post by @trancexx, which gives me the Default Audit Device Name, but unsure how to get the Guid or the Microphone Name and Guid.  I believe to get the Guid, I would need to use PKEY_AudioEndpoint_GUID but unsure how to code this.  If anyone can assist or point me in the right direction it would be much appreciated.

Cheers Subz

 

Edited by Subz

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Bilgus

Thats a nice example from Trancexx there

I believe you just need to pass the Correct Property Key

Global Const $sPKEY_Device_FriendlyName = "{a45c254e-df1c-4efd-8020-67d146a850e0}, 14"
Global Const $sPKEY_Audio_Endpoint_GUID = "{1DA5D803-D492-4EDD-8C23-E0C0FFEE7F0E}, 4"

like literally use $sPKEY_Audio_Endpoint_GUID instead of $sPKEY_Device_FriendlyName

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Bilgus
Posted (edited)

sorry I missed the part about you wanting the microphone as well

#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 $sPKEY_Audio_Endpoint_GUID = "{1DA5D803-D492-4EDD-8C23-E0C0FFEE7F0E}, 4"

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)

Local $tPKEY_Audio_Endpoint_GUID = _WinAPI_PKEYFromString($sPKEY_Audio_Endpoint_GUID)
Local $sGuid
$oProps.GetValue($tPKEY_Audio_Endpoint_GUID, $sGuid)

ConsoleWrite($sGuid & @CRLF)

;------------MICROPHONE
$oEnumerator.GetDefaultAudioEndpoint($eCapture, $DEVICE_STATE_ACTIVE, $pDefaultEndpoint)

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

; PropertyStore stores properties
$oEndpoint.OpenPropertyStore($STGM_READ, $pProps)

$oProps = ObjCreateInterface($pProps, $IID_IPropertyStore, $tagIPropertyStore)

; Collect FriendlyName property
$tPKEY_Device_FriendlyName = _WinAPI_PKEYFromString($sPKEY_Device_FriendlyName)

$oProps.GetValue($tPKEY_Device_FriendlyName, $sName)

ConsoleWrite($sName & @CRLF)

$tPKEY_Audio_Endpoint_GUID = _WinAPI_PKEYFromString($sPKEY_Audio_Endpoint_GUID)

$oProps.GetValue($tPKEY_Audio_Endpoint_GUID, $sGuid)

ConsoleWrite($sGuid & @CRLF)

 

Edited by Bilgus
  • Like 1

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Subz

Thanks Bilgus

Sorry for the delay, it turned out I required the Instance ID rather than the Guid, was attempting to get this when I found another post by Trancexx which included the instance id and I was able to make a few adjustments to return the instance Id, Type (Microphone or Playback) and the name. (see code below)

nb: I tried to figure out how to use the ERoles to determine the type but reverted to using the registry as not very familiar with converting C++ into AutoIt code.

Thanks again.

#include <Array.au3>
#include <WinAPI.au3>
#include <Constants.au3>

Global Const $sCLSID_MMDeviceEnumerator = "{BCDE0395-E52F-467C-8E3D-C4579291692E}"
Global Const $sIID_IMMDeviceEnumerator = "{A95664D2-9614-4F35-A746-DE8DB63617E6}"

Global Const $tagIMMDeviceEnumerator = "EnumAudioEndpoints hresult(dword;dword;ptr*);" & _
    "GetDefaultAudioEndpoint hresult(dword;dword;ptr*);" & _
    "GetDevice hresult(wstr;ptr*);" & _
    "RegisterEndpointNotificationCallback hresult(ptr);" & _
    "UnregisterEndpointNotificationCallback hresult(ptr);"

Global Const $sCLSID_CPolicyConfigClient = "{870af99c-171d-4f9e-af0d-e63df40c2bc9}"
Global Const $sIID_IPolicyConfig = "{f8679f50-850a-41cf-9c72-430f290290c8}"

Global Const $tagIPolicyConfig = "GetMixFormat hresult(wstr;ptr*);" & _
    "GetDeviceFormat hresult(wstr;int;ptr*);" & _
    "ResetDeviceFormat hresult(wstr);" & _
    "SetDeviceFormat hresult(wstr;ptr;ptr);" & _
    "GetProcessingPeriod hresult(wstr;int;int64*;int64*);" & _
    "SetProcessingPeriod hresult(wstr;int64*);" & _
    "GetShareMode hresult(wstr;ptr);" & _
    "SetShareMode hresult(wstr;ptr);" & _
    "GetPropertyValue hresult(wstr;struct;variant*);" & _
    "SetPropertyValue hresult(wstr;struct;variant*);" & _
    "SetDefaultEndpoint hresult(wstr;int);" & _
    "SetEndpointVisibility hresult(wstr;int);"

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_IMMDeviceCollection = "{0BD7A1BE-7A1A-44DB-8397-CC5392387B5E}"
Global Const $tagIMMDeviceCollection = "GetCount hresult(uint*);" & _
    "Item hresult(uint;ptr*)"

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


Func _EnumerateDevices()
    ;~ Error monitoring
    Local $oErrorHandler = ObjEvent("AutoIt.Error", "_ErrFunc")
        #forceref $oErrorHandler

;~ Registry Key for Audio Devices
    Local $sRegAudio = @OSArch = "x64" ? "HKLM64\SOFTWARE\Microsoft\Windows\CurrentVersion\MMDevices\Audio" : "HKLM64\SOFTWARE\Microsoft\Windows\CurrentVersion\MMDevices\Audio"

    ;~ Create MMDeviceEnumerator object
    Local $oEnumerator = ObjCreateInterface($sCLSID_MMDeviceEnumerator, $sIID_IMMDeviceEnumerator, $tagIMMDeviceEnumerator)

    ;~ Get collection out of it
    Local $pCollection
    $oEnumerator.EnumAudioEndpoints($eAll, $DEVICE_STATE_ACTIVE, $pCollection)
    ;~ Turn it into object
    Local $oCollection = ObjCreateInterface($pCollection, $IID_IMMDeviceCollection, $tagIMMDeviceCollection)

    ;~ Check the number of devices in collection
    Local $iCount
    $oCollection.GetCount($iCount)

    ;~ Array for out
    Local $aArray[$iCount][4]
    Local $pEndpoint, $oEndpoint
    Local $pID, $sId, $pProps, $oProps
    Local $sName
    Local $tPKEY_Device_FriendlyName = _WinAPI_PKEYFromString($sPKEY_Device_FriendlyName)

    ;~ Actual enumeration
    For $i = 0 To $iCount - 1
    ;~ Item at "i" index is audio endpoint device
        $oCollection.Item($i, $pEndpoint)
        $oEndpoint = ObjCreateInterface($pEndpoint, $IID_IMMDevice, $tagIMMDevice)

    ;~ Collect ID
        $oEndpoint.GetId($pID)
        $sId = DllStructGetData(DllStructCreate("wchar ID[" & _WinAPI_PtrStringLenW($pID) & "]", $pID), "ID")
        _WinAPI_CoTaskMemFree($pID)
        $aArray[$i][2] = $sId

    ;~ Detect Instance ID is Microphone(capture) or Playback(render)
        $aGuid = StringSplit($sId, ".")
        $aArray[$i][1] = $aGuid[$aGuid[0]]
        $aArray[$i][0] = RegRead($sRegAudio & "\Capture\" & $aGuid[$aGuid[0]], "DeviceState") >= 1 ? "Microphone" : ""
        If $aArray[$i][0] = "" Then $aArray[$i][0] = RegRead($sRegAudio & "\Render\" & $aGuid[$aGuid[0]], "DeviceState") >= 1 ? "Playback" : ""

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

    ;~ Collect FriendlyName property
        $sName = 0
        $oProps.GetValue(DllStructGetPtr($tPKEY_Device_FriendlyName), $sName)
        $aArray[$i][3] = $sName
    Next
    Return $aArray
EndFunc ;==>_EnumerateDevices

Func _SwitchToDevice($sId)
    Local $oPolicyConfig = ObjCreateInterface($sCLSID_CPolicyConfigClient, $sIID_IPolicyConfig, $tagIPolicyConfig)
    Local $hResult = $oPolicyConfig.SetDefaultEndpoint($sId, $eConsole)
    If $hResult = $S_OK Then $hResult = $oPolicyConfig.SetDefaultEndpoint($sId, $eCommunications)
    Return $hResult = $S_OK
EndFunc ;==>_SwitchToDevice


Func _WinAPI_PKEYFromString($sPKEY, $pID = Default)
    Local $tPKEY = DllStructCreate("byte GUID[16]; dword PID;")
    DllCall("propsys.dll", "long", "PSPropertyKeyFromString", "wstr", $sPKEY, "ptr", DllStructGetPtr($tPKEY))
    If @error Then ; alternative for unsupported systems
        Local $tGUID = _WinAPI_GUIDFromString($sPKEY)
        If Not @error Then
            DllStructSetData($tPKEY, "GUID", DllStructGetData(DllStructCreate("byte Data[16]", DllStructGetPtr($tGUID)), 1))
        EndIf
        DllStructSetData($tPKEY, "PID", Number(StringRegExpReplace($sPKEY, ".*?}", "")))
    EndIf
    If $pID <> Default Then DllStructSetData($tPKEY, "PID", $pID)
    Return $tPKEY
EndFunc ;==>_WinAPI_PKEYFromString

Func _WinAPI_PtrStringLenW($pString)
    Local $aCall = DllCall("kernel32.dll", "dword", "lstrlenW", "ptr", $pString)
        If @error Then Return SetError(1, 0, 0)
    Return $aCall[0]
EndFunc ;==>_WinAPI_PtrStringLenW

Func _WinAPI_CoTaskMemFree($pMem)
    DllCall("ole32.dll", "none", "CoTaskMemFree", "ptr", $pMem)
    If @error Then Return SetError(1, 0, False)
    Return True
EndFunc ;==>_WinAPI_CoTaskMemFree

Func _ErrFunc($oError)
    ConsoleWrite("COM Error, ScriptLine(" & $oError.scriptline & ") : Number 0x" & Hex($oError.number, 8) & " - " & $oError.windescription & @CRLF)
EndFunc ;==>_ErrFunc

 

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      func M3UImport($M3UFile) dim $AM3UItems local $fileOpen = FileOpen($path, bitOr($FO_OVERWRITE,$FO_CREATEPATH,$FO_ANSI)) _FileReadToArray ($fileOpen, $AM3UItems) if @error then return setError(1) local $M3UPath for $i = 1 to $AM3UItems[0] $AM3UItems[$i] = stringReplace($AM3UItems[$i], "file:///", "") $AM3UItems[$i] = stringReplace($AM3UItems[$i], "/", "\") $AM3UItems[$i] = stringReplace($AM3UItems[$i], "%20", " ") $M3UPath = _fileGetDirPath($AM3UItems[$i]) if $M3UPath = "" then $M3UPath = @WorkingDir if not StringTrimRight($M3UPath, 1) = "\" then $M3UPath &= "\" $AM3UItems[$i] = $M3UPath & $AM3UItems[$i] endIf local $ext = _GetFileExt($AM3UItems[$i]) if fileExists($AM3UItems[$i]) and not (StringInStr($FilesExt, $ext) = 0) then $aListItems[0] += 1 GUICtrlCreateListViewItem(_GetFileName($AM3UItems[$i]) & Opt("GUIDataSeparatorChar") & " : " & Opt("GUIDataSeparatorChar") & $AM3UItems[$i], $list) endIf next return "" endFunc

      I ask for your help in this work
      with my Greetings and thanks in advance
    • nacerbaaziz
      By nacerbaaziz
      Hello all
      I found this function in the Internet
      It is to play audio files from  the compiled script
      I did not understand just one thing on this function
      func play($name, $wait = 0) local Const $SND_RESOURCE = 0x00040004 local Const $SND_ASYNC = 1 ; Play the file - the script will pause as it sounds if $wait = 0 then DllCall("winmm.dll", "int", "PlaySound", "str", $name, "hwnd", 0, "int", BitOR($SND_RESOURCE, $SND_ASYNC)) else DllCall("winmm.dll", "int", "PlaySound", "str", $name, "hwnd", 0, "int", $SND_RESOURCE) endIf return 1 endFunc What I did not understand was this variable
      local Const $SND_RESOURCE = 0x00040004 I know that this variable is contains the resource name
      But what if I want to change the name of the resource what i'll do?
      can i do that?
      Thanks in advance
       
    • nacerbaaziz
      By nacerbaaziz
      Hi guys
      I'm looking for how to detect if the default audio output has changed
      During my research I found this file
      I did not know how to use it
      can  anyone guide me how  it works please.
      Thanks in advance
      audioOutputIsChanged.au3
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