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Get Audio/Microphone Devices [Solved]

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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
Name: Speakers (Realtek High Definition Audio)
Guid: {}.{a46ce930-4dd3-49b5-8e8e-7c8a2fdc3925}

Default Microphone Device Name and Guid
Name: Microphone (Realtek High Definition Audio)
Guid: {}.{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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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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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

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)

$oEnumerator.GetDefaultAudioEndpoint($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

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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()

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

    ;~ 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
        $sId = DllStructGetData(DllStructCreate("wchar ID[" & _WinAPI_PtrStringLenW($pID) & "]", $pID), "ID")
        $aArray[$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
    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))
        DllStructSetData($tPKEY, "PID", Number(StringRegExpReplace($sPKEY, ".*?}", "")))
    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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      #include <Debug.au3> ; for _DebugArrayDisplay() #include "SetMicForPlayback.bulk.au3" ;~ Global $g_aEnumerateAudioDevices = _EnumerateAudioDevices() ;~ Global $g_aEnumerateAudioDevicesWas = $g_aEnumerateAudioDevices ;~ _DebugArrayDisplay($g_aEnumerateAudioDevicesWas, "$g_aEnumerateAudioDevicesWas") ;~ Row |Col 0 |Col 1 |Col 2 |Col 3 |Col 4 ;~ Row 0 |Playback |{34d90035-0679-4b97-b868-ddba418b989b} |{}.{34d90035-0679-4b97-b868-ddba418b989b}|Speakers (High Definition Audio Device) |1 ;~ Row 1 |Playback |{43d508ee-19c5-4513-bd52-e1b7ba57ee82} |{}.{43d508ee-19c5-4513-bd52-e1b7ba57ee82}|Headset Earphone (2- Arctis Pro Wireless Chat) |0 ;~ Row 2 |Playback |{a6f69bc4-f708-4a0f-bf58-995fe9d5d221} |{}.{a6f69bc4-f708-4a0f-bf58-995fe9d5d221}|Headset Earphone (Corsair VOID Wireless Gaming Dongle) |0 ;~ Row 3 |Microphone |{a025c7e9-3655-474f-9643-8f05f1e4d591} |{}.{a025c7e9-3655-474f-9643-8f05f1e4d591}|Headset Microphone (2- Arctis Pro Wireless Chat) |0 ;~ Row 4 |Microphone |{f9a630d2-44e9-4db5-b115-9fe7503a2ec7} |{}.{f9a630d2-44e9-4db5-b115-9fe7503a2ec7}|Headset Microphone (Corsair VOID Wireless Gaming Dongle) |1 ;~ _SwitchToDevice($g_aEnumerateAudioDevices[4][2]) ;~ + [1]"OnDefaultDeviceChanged", [2]"0", [3]"1", [4]"{}.{43d508ee-19c5-4513-bd52-e1b7ba57ee82}" ;~ + [1]"OnDefaultDeviceChanged", [2]"0", [3]"1", [4]"{}.{34d90035-0679-4b97-b868-ddba418b989b}" main() Func main() If WinExists(StringTrimRight(@ScriptName, 4) & "'s hidden window") Then Exit 0 AutoItWinSetTitle(StringTrimRight(@ScriptName, 4) & "'s hidden window") Local $n, $a, $s, $b, $i While Sleep(50) If $g_aAudioSwitched[0] And TimerDiff($g_aAudioSwitched[0]) > 500 Then ConsoleWrite('+ [1]"' & $g_aAudioSwitched[1] & '", [2]"' & $g_aAudioSwitched[2] & '", [3]"' & $g_aAudioSwitched[3] & '", [4]"' & $g_aAudioSwitched[4] & '"' & @CRLF) Switch $g_aAudioSwitched[1] Case "OnDefaultDeviceChanged" $s = "" $a = _EnumerateAudioDevices() For $n = 0 To UBound($a) - 1 If $a[$n][2] = $g_aAudioSwitched[4] Then $b = StringSplit($a[$n][3], "()", 0) If UBound($b) > 2 Then $s = $b[2] ConsoleWrite($s & @CRLF) ExitLoop EndIf Next If $s = "" Then ConsoleWrite(@TAB & $s & ' = not found ?, just 1 device ?, remote audio ?' & @CRLF) Else $i = 5 For $n = 0 To UBound($a) - 1 If $a[$n][0] = "Microphone" Then If StringInStr($a[$n][3], $s) Then ; ObjCreateInterface: "Warning: This feature is experimental." $i = ShellExecuteWait(@ScriptFullPath, "/ErrorStdOut " & $a[$n][2], @ScriptDir) Switch $i Case 3 ConsoleWrite(@TAB & $s & ": apply = True" & @CRLF) Case 4 ConsoleWrite(@TAB & $s & ": apply = False" & @CRLF) Case 1 ConsoleWrite(@TAB & $s & ": apply = Crashed" & @CRLF) Case Else ConsoleWrite(@TAB & $s & ": no clue !" & @CRLF) EndSwitch ExitLoop EndIf Else ContinueLoop EndIf Next EndIf If $i = 5 Then ConsoleWrite(@TAB & $s & ' = ..have to code a "default mic" if none associated. ( you do it, I don''t have one. )' & @CRLF) ;~ AdlibRegister("did_it_work") ; ...to have some feedback while in development, but the "Sound"("Recording" tab), shows the change on the fly. Case Else ConsoleWrite("! no code written for this event" & @CRLF) EndSwitch $g_aAudioSwitched[0] = 0 $g_aAudioSwitched[1] = "" EndIf WEnd EndFunc ;==>main Func did_it_work() AdlibUnRegister("did_it_work") Local $a = _EnumerateAudioDevices() _DebugArrayDisplay($a, "_EnumerateAudioDevices()") EndFunc ;==>did_it_work  
      SetMicForPlayback.bulk.au3 The "bulk" file has the real code, ( not mine, references are in the code )
      SetMicForPlayback.au3 this is the "main()" ( the code you can read above ).
      Works for me on Win10 v???.???.?? ( I'm not good with updates ).
      Hope it helps the next guy playing TF2 as an engineer, finding a headset close to you, to tell your team color to use the teleport that goes to the enemy base to get the intel., no one listens, you get aggravated, #%#$#@$ ....  

      PS: ..the above code misbehaves a lot and is left for the adventurous.
      Use the current code in the downloads section for a functional script.
    • By PuneetTewani
      #include <IE.au3>
      #include <Tesseract.au3>
      #include <MsgBoxConstants.au3>
      #include <Math.au3>
      #include <FileConstants.au3>
      #include <StringConstants.au3>
      #include <File.au3>
      #include <ScreenCapture.au3>
      #include <sound.au3>
      #Include <WinAPI.au3>
      #include <Date.au3>
      $OCR_Result = _TesseractScreenCapture(0,"",1,2,220,660,500,730,1)
      $OCR_Result1 = _TesseractScreenCapture(0,"",1,2,220,660,500,730,1)
      $OCR_Result2 = _TesseractScreenCapture(0,"",1,2,220,660,500,730,1)
      $OCR_Result3 = _TesseractScreenCapture(0,"",1,2,220,660,500,730,1)

      $sound = _SoundStatus("C:\ExpertAdvisorBuyAlert.wav")
      while _nowtime < 3.30 pm
          If $sound = True Then
             if $OCR_Result1 > $OCR_Result2
      Trying to ocr some values on chart in real time(once per minute) and buy/sell securities on basis of alert generated in my software.
      I am struck onto few steps.
      1. On Tesseract Screen Capture indentation parameters. How can we determine the exact parameters if I just want numeric values only.
      2. The Tesseract Screen Capture generates and error Obj1 on line 185 which needs to be resolved.
      3. Sometimes lines get overlapped with values. What to do in that case.
      3. Detecting the sound as and when it approaches and then comparing the ocr values to decide on either buy or sell.
      The values that needs to be fetched are encircled.

    • By nacerbaaziz
      Hi dear, I have a question please
      I designed a function to read the content of the playlist
      I succeeded in that
      I have a problem
      For VLC player playlists
      If the path of the files in Arabic language the path is be as follows
      I did not know how to decrypt this text to be readable
      This is the function that i used

      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
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