Change the volume of specific application

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fyvmlss
Posts: 4
Joined: 28 Jul 2021, 16:31

Change the volume of specific application

28 Jul 2021, 16:42

Hello,
i'm new to autohotkey and scripts in general..
Is there any way to change the volume (Volume Up: +5% in Windows Sound Mixer, Volume Down +5%..) of specific application by using (I have Razer Cynosa V2) special keys that my keyboard has (in the keyboards app the keys are called Volume Up and Volume Down)? (Without opening the Volume Mixer..)
I would really like to have the hotkey since now i can only change the volume of basicly everything...
Thank you so much for help, have a wonderful day!
User avatar
Masonjar13
Posts: 1555
Joined: 20 Jul 2014, 10:16
Location: Не Россия
Contact:

Re: Change the volume of specific application

28 Jul 2021, 16:57

You'll need VA library, then you can use SetWindowVol().

Code: Select all

#include <setWindowVol>
Volume_Up::setWindowVol(,"+15")
Volume_Down::setWindowVol(,"-15")
If you don't want to use the libraries, here's an everything-included version.

Code: Select all

Volume_Up::setWindowVol(,"+15")
Volume_Down::setWindowVol(,"-15")

setWindowVol(winName:="a",vol:="n"){
	if (vol=="n")
		return
	winGet,winPid,PID,% winName
	if !(volume:=GetVolumeObject(winPid))
		return
	vsign:=subStr(vol,1,1)
	if (vsign="+"||vsign="-") {
		vol:=subStr(vol,2),vol/=100
		
		VA_ISimpleAudioVolume_GetMasterVolume(volume,cvol)
		if (vsign="+")
			vol:=cvol+vol>1?1:cvol+vol
		else if (vsign="-")
			vol:=cvol-vol<0?0:cvol-vol
	} else
		vol/=100
	VA_ISimpleAudioVolume_SetMasterVolume(volume,vol),objRelease(volume)
}

VA_GetMasterVolume(channel="", device_desc="playback")
{
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    if channel =
        VA_IAudioEndpointVolume_GetMasterVolumeLevelScalar(aev, vol)
    else
        VA_IAudioEndpointVolume_GetChannelVolumeLevelScalar(aev, channel-1, vol)
    ObjRelease(aev)
    return Round(vol*100,3)
}

VA_SetMasterVolume(vol, channel="", device_desc="playback")
{
    vol := vol>100 ? 100 : vol<0 ? 0 : vol
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    if channel =
        VA_IAudioEndpointVolume_SetMasterVolumeLevelScalar(aev, vol/100)
    else
        VA_IAudioEndpointVolume_SetChannelVolumeLevelScalar(aev, channel-1, vol/100)
    ObjRelease(aev)
}

VA_GetMasterChannelCount(device_desc="playback")
{
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    VA_IAudioEndpointVolume_GetChannelCount(aev, count)
    ObjRelease(aev)
    return count
}

VA_SetMasterMute(mute, device_desc="playback")
{
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    VA_IAudioEndpointVolume_SetMute(aev, mute)
    ObjRelease(aev)
}

VA_GetMasterMute(device_desc="playback")
{
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    VA_IAudioEndpointVolume_GetMute(aev, mute)
    ObjRelease(aev)
    return mute
}

;
; SUBUNIT CONTROLS
;

VA_GetVolume(subunit_desc="1", channel="", device_desc="playback")
{
    if ! avl := VA_GetDeviceSubunit(device_desc, subunit_desc, "{7FB7B48F-531D-44A2-BCB3-5AD5A134B3DC}")
        return
    VA_IPerChannelDbLevel_GetChannelCount(avl, channel_count)
    if channel =
    {
        vol = 0
        
        Loop, %channel_count%
        {
            VA_IPerChannelDbLevel_GetLevelRange(avl, A_Index-1, min_dB, max_dB, step_dB)
            VA_IPerChannelDbLevel_GetLevel(avl, A_Index-1, this_vol)
            this_vol := VA_dB2Scalar(this_vol, min_dB, max_dB)
            
            ; "Speakers Properties" reports the highest channel as the volume.
            if (this_vol > vol)
                vol := this_vol
        }
    }
    else if channel between 1 and channel_count
    {
        channel -= 1
        VA_IPerChannelDbLevel_GetLevelRange(avl, channel, min_dB, max_dB, step_dB)
        VA_IPerChannelDbLevel_GetLevel(avl, channel, vol)
        vol := VA_dB2Scalar(vol, min_dB, max_dB)
    }
    ObjRelease(avl)
    return vol
}

VA_SetVolume(vol, subunit_desc="1", channel="", device_desc="playback")
{
    if ! avl := VA_GetDeviceSubunit(device_desc, subunit_desc, "{7FB7B48F-531D-44A2-BCB3-5AD5A134B3DC}")
        return
    
    vol := vol<0 ? 0 : vol>100 ? 100 : vol
    
    VA_IPerChannelDbLevel_GetChannelCount(avl, channel_count)
    
    if channel =
    {
        ; Simple method -- resets balance to "center":
        ;VA_IPerChannelDbLevel_SetLevelUniform(avl, vol)
        
        vol_max = 0
        
        Loop, %channel_count%
        {
            VA_IPerChannelDbLevel_GetLevelRange(avl, A_Index-1, min_dB, max_dB, step_dB)
            VA_IPerChannelDbLevel_GetLevel(avl, A_Index-1, this_vol)
            this_vol := VA_dB2Scalar(this_vol, min_dB, max_dB)
            
            channel%A_Index%vol := this_vol
            channel%A_Index%min := min_dB
            channel%A_Index%max := max_dB
            
            ; Scale all channels relative to the loudest channel.
            ; (This is how Vista's "Speakers Properties" dialog seems to work.)
            if (this_vol > vol_max)
                vol_max := this_vol
        }
        
        Loop, %channel_count%
        {
            this_vol := vol_max ? channel%A_Index%vol / vol_max * vol : vol
            this_vol := VA_Scalar2dB(this_vol/100, channel%A_Index%min, channel%A_Index%max)            
            VA_IPerChannelDbLevel_SetLevel(avl, A_Index-1, this_vol)
        }
    }
    else if channel between 1 and %channel_count%
    {
        channel -= 1
        VA_IPerChannelDbLevel_GetLevelRange(avl, channel, min_dB, max_dB, step_dB)
        VA_IPerChannelDbLevel_SetLevel(avl, channel, VA_Scalar2dB(vol/100, min_dB, max_dB))
    }
    ObjRelease(avl)
}

VA_GetChannelCount(subunit_desc="1", device_desc="playback")
{
    if ! avl := VA_GetDeviceSubunit(device_desc, subunit_desc, "{7FB7B48F-531D-44A2-BCB3-5AD5A134B3DC}")
        return
    VA_IPerChannelDbLevel_GetChannelCount(avl, channel_count)
    ObjRelease(avl)
    return channel_count
}

VA_SetMute(mute, subunit_desc="1", device_desc="playback")
{
    if ! amute := VA_GetDeviceSubunit(device_desc, subunit_desc, "{DF45AEEA-B74A-4B6B-AFAD-2366B6AA012E}")
        return
    VA_IAudioMute_SetMute(amute, mute)
    ObjRelease(amute)
}

VA_GetMute(subunit_desc="1", device_desc="playback")
{
    if ! amute := VA_GetDeviceSubunit(device_desc, subunit_desc, "{DF45AEEA-B74A-4B6B-AFAD-2366B6AA012E}")
        return
    VA_IAudioMute_GetMute(amute, muted)
    ObjRelease(amute)
    return muted
}

;
; AUDIO METERING
;

VA_GetAudioMeter(device_desc="playback")
{
    if ! device := VA_GetDevice(device_desc)
        return 0
    VA_IMMDevice_Activate(device, "{C02216F6-8C67-4B5B-9D00-D008E73E0064}", 7, 0, audioMeter)
    ObjRelease(device)
    return audioMeter
}

VA_GetDevicePeriod(device_desc, ByRef default_period, ByRef minimum_period="")
{
    defaultPeriod := minimumPeriod := 0
    if ! device := VA_GetDevice(device_desc)
        return false
    VA_IMMDevice_Activate(device, "{1CB9AD4C-DBFA-4c32-B178-C2F568A703B2}", 7, 0, audioClient)
    ObjRelease(device)
    ; IAudioClient::GetDevicePeriod
    DllCall(NumGet(NumGet(audioClient+0)+9*A_PtrSize), "ptr",audioClient, "int64*",default_period, "int64*",minimum_period)
    ; Convert 100-nanosecond units to milliseconds.
    default_period /= 10000
    minimum_period /= 10000    
    ObjRelease(audioClient)
    return true
}

VA_GetAudioEndpointVolume(device_desc="playback")
{
    if ! device := VA_GetDevice(device_desc)
        return 0
    VA_IMMDevice_Activate(device, "{5CDF2C82-841E-4546-9722-0CF74078229A}", 7, 0, endpointVolume)
    ObjRelease(device)
    return endpointVolume
}

VA_GetDeviceSubunit(device_desc, subunit_desc, subunit_iid)
{
    if ! device := VA_GetDevice(device_desc)
        return 0
    subunit := VA_FindSubunit(device, subunit_desc, subunit_iid)
    ObjRelease(device)
    return subunit
}

VA_FindSubunit(device, target_desc, target_iid)
{
    if target_desc is integer
        target_index := target_desc
    else
        RegExMatch(target_desc, "(?<_name>.*?)(?::(?<_index>\d+))?$", target)
    ; v2.01: Since target_name is now a regular expression, default to case-insensitive mode if no options are specified.
    if !RegExMatch(target_name,"^[^\(]+\)")
        target_name := "i)" target_name
    r := VA_EnumSubunits(device, "VA_FindSubunitCallback", target_name, target_iid
            , Object(0, target_index ? target_index : 1, 1, 0))
    return r
}

VA_FindSubunitCallback(part, interface, index)
{
    index[1] := index[1] + 1 ; current += 1
    if (index[0] == index[1]) ; target == current ?
    {
        ObjAddRef(interface)
        return interface
    }
}

VA_EnumSubunits(device, callback, target_name="", target_iid="", callback_param="")
{
    VA_IMMDevice_Activate(device, "{2A07407E-6497-4A18-9787-32F79BD0D98F}", 7, 0, deviceTopology)
    VA_IDeviceTopology_GetConnector(deviceTopology, 0, conn)
    ObjRelease(deviceTopology)
    VA_IConnector_GetConnectedTo(conn, conn_to)
    VA_IConnector_GetDataFlow(conn, data_flow)
    ObjRelease(conn)
    if !conn_to
        return ; blank to indicate error
    part := ComObjQuery(conn_to, "{AE2DE0E4-5BCA-4F2D-AA46-5D13F8FDB3A9}") ; IID_IPart
    ObjRelease(conn_to)
    if !part
        return
    r := VA_EnumSubunitsEx(part, data_flow, callback, target_name, target_iid, callback_param)
    ObjRelease(part)
    return r ; value returned by callback, or zero.
}

VA_EnumSubunitsEx(part, data_flow, callback, target_name="", target_iid="", callback_param="")
{
    r := 0
    
    VA_IPart_GetPartType(part, type)
   
    if type = 1 ; Subunit
    {
        VA_IPart_GetName(part, name)
        
        ; v2.01: target_name is now a regular expression.
        if RegExMatch(name, target_name)
        {
            if target_iid =
                r := %callback%(part, 0, callback_param)
            else
                if VA_IPart_Activate(part, 7, target_iid, interface) = 0
                {
                    r := %callback%(part, interface, callback_param)
                    ; The callback is responsible for calling ObjAddRef()
                    ; if it intends to keep the interface pointer.
                    ObjRelease(interface)
                }

            if r
                return r ; early termination
        }
    }
    
    if data_flow = 0
        VA_IPart_EnumPartsIncoming(part, parts)
    else
        VA_IPart_EnumPartsOutgoing(part, parts)
    
    VA_IPartsList_GetCount(parts, count)
    Loop %count%
    {
        VA_IPartsList_GetPart(parts, A_Index-1, subpart)        
        r := VA_EnumSubunitsEx(subpart, data_flow, callback, target_name, target_iid, callback_param)
        ObjRelease(subpart)
        if r
            break ; early termination
    }
    ObjRelease(parts)
    return r ; continue/finished enumeration
}

; device_desc = device_id
;               | ( friendly_name | 'playback' | 'capture' ) [ ':' index ]
VA_GetDevice(device_desc="playback")
{
    static CLSID_MMDeviceEnumerator := "{BCDE0395-E52F-467C-8E3D-C4579291692E}"
        , IID_IMMDeviceEnumerator := "{A95664D2-9614-4F35-A746-DE8DB63617E6}"
    if !(deviceEnumerator := ComObjCreate(CLSID_MMDeviceEnumerator, IID_IMMDeviceEnumerator))
        return 0
    
    device := 0
    
    if VA_IMMDeviceEnumerator_GetDevice(deviceEnumerator, device_desc, device) = 0
        goto VA_GetDevice_Return
    
    if device_desc is integer
    {
        m2 := device_desc
        if m2 >= 4096 ; Probably a device pointer, passed here indirectly via VA_GetAudioMeter or such.
        {
            ObjAddRef(device := m2)
            goto VA_GetDevice_Return
        }
    }
    else
        RegExMatch(device_desc, "(.*?)\s*(?::(\d+))?$", m)
    
    if m1 in playback,p
        m1 := "", flow := 0 ; eRender
    else if m1 in capture,c
        m1 := "", flow := 1 ; eCapture
    else if (m1 . m2) = ""  ; no name or number specified
        m1 := "", flow := 0 ; eRender (default)
    else
        flow := 2 ; eAll
    
    if (m1 . m2) = ""   ; no name or number (maybe "playback" or "capture")
    {
        VA_IMMDeviceEnumerator_GetDefaultAudioEndpoint(deviceEnumerator, flow, 0, device)
        goto VA_GetDevice_Return
    }

    VA_IMMDeviceEnumerator_EnumAudioEndpoints(deviceEnumerator, flow, 1, devices)
    
    if m1 =
    {
        VA_IMMDeviceCollection_Item(devices, m2-1, device)
        goto VA_GetDevice_Return
    }
    
    VA_IMMDeviceCollection_GetCount(devices, count)
    index := 0
    Loop % count
        if VA_IMMDeviceCollection_Item(devices, A_Index-1, device) = 0
            if InStr(VA_GetDeviceName(device), m1) && (m2 = "" || ++index = m2)
                goto VA_GetDevice_Return
            else
                ObjRelease(device), device:=0

VA_GetDevice_Return:
    ObjRelease(deviceEnumerator)
    if devices
        ObjRelease(devices)
    
    return device ; may be 0
}

VA_GetDeviceName(device)
{
    static PKEY_Device_FriendlyName
    if !VarSetCapacity(PKEY_Device_FriendlyName)
        VarSetCapacity(PKEY_Device_FriendlyName, 20)
        ,VA_GUID(PKEY_Device_FriendlyName :="{A45C254E-DF1C-4EFD-8020-67D146A850E0}")
        ,NumPut(14, PKEY_Device_FriendlyName, 16)
    VarSetCapacity(prop, 16)
    VA_IMMDevice_OpenPropertyStore(device, 0, store)
    ; store->GetValue(.., [out] prop)
    DllCall(NumGet(NumGet(store+0)+5*A_PtrSize), "ptr", store, "ptr", &PKEY_Device_FriendlyName, "ptr", &prop)
    ObjRelease(store)
    VA_WStrOut(deviceName := NumGet(prop,8))
    return deviceName
}

VA_SetDefaultEndpoint(device_desc, role)
{
    /* Roles:
         eConsole        = 0  ; Default Device
         eMultimedia     = 1
         eCommunications = 2  ; Default Communications Device
    */
    if ! device := VA_GetDevice(device_desc)
        return 0
    if VA_IMMDevice_GetId(device, id) = 0
    {
        cfg := ComObjCreate("{294935CE-F637-4E7C-A41B-AB255460B862}"
                          , "{568b9108-44bf-40b4-9006-86afe5b5a620}")
        hr := VA_xIPolicyConfigVista_SetDefaultEndpoint(cfg, id, role)
        ObjRelease(cfg)
    }
    ObjRelease(device)
    return hr = 0
}


;
; HELPERS
;

; Convert string to binary GUID structure.
VA_GUID(ByRef guid_out, guid_in="%guid_out%") {
    if (guid_in == "%guid_out%")
        guid_in :=   guid_out
    if  guid_in is integer
        return guid_in
    VarSetCapacity(guid_out, 16, 0)
	DllCall("ole32\CLSIDFromString", "wstr", guid_in, "ptr", &guid_out)
	return &guid_out
}

; Convert binary GUID structure to string.
VA_GUIDOut(ByRef guid) {
    VarSetCapacity(buf, 78)
    DllCall("ole32\StringFromGUID2", "ptr", &guid, "ptr", &buf, "int", 39)
    guid := StrGet(&buf, "UTF-16")
}

; Convert COM-allocated wide char string pointer to usable string.
VA_WStrOut(ByRef str) {
    str := StrGet(ptr := str, "UTF-16")
    DllCall("ole32\CoTaskMemFree", "ptr", ptr)  ; FREES THE STRING.
}

VA_dB2Scalar(dB, min_dB, max_dB) {
    min_s := 10**(min_dB/20), max_s := 10**(max_dB/20)
    return ((10**(dB/20))-min_s)/(max_s-min_s)*100
}

VA_Scalar2dB(s, min_dB, max_dB) {
    min_s := 10**(min_dB/20), max_s := 10**(max_dB/20)
    return log((max_s-min_s)*s+min_s)*20
}


;
; INTERFACE WRAPPERS
;   Reference: Core Audio APIs in Windows Vista -- Programming Reference
;       http://msdn2.microsoft.com/en-us/library/ms679156(VS.85).aspx
;

;
; IMMDevice : {D666063F-1587-4E43-81F1-B948E807363F}
;
VA_IMMDevice_Activate(this, iid, ClsCtx, ActivationParams, ByRef Interface) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr", VA_GUID(iid), "uint", ClsCtx, "uint", ActivationParams, "ptr*", Interface)
}
VA_IMMDevice_OpenPropertyStore(this, Access, ByRef Properties) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Access, "ptr*", Properties)
}
VA_IMMDevice_GetId(this, ByRef Id) {
    hr := DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint*", Id)
    VA_WStrOut(Id)
    return hr
}
VA_IMMDevice_GetState(this, ByRef State) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint*", State)
}

;
; IDeviceTopology : {2A07407E-6497-4A18-9787-32F79BD0D98F}
;
VA_IDeviceTopology_GetConnectorCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IDeviceTopology_GetConnector(this, Index, ByRef Connector) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Index, "ptr*", Connector)
}
VA_IDeviceTopology_GetSubunitCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IDeviceTopology_GetSubunit(this, Index, ByRef Subunit) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint", Index, "ptr*", Subunit)
}
VA_IDeviceTopology_GetPartById(this, Id, ByRef Part) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "uint", Id, "ptr*", Part)
}
VA_IDeviceTopology_GetDeviceId(this, ByRef DeviceId) {
    hr := DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "uint*", DeviceId)
    VA_WStrOut(DeviceId)
    return hr
}
VA_IDeviceTopology_GetSignalPath(this, PartFrom, PartTo, RejectMixedPaths, ByRef Parts) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "ptr", PartFrom, "ptr", PartTo, "int", RejectMixedPaths, "ptr*", Parts)
}

;
; IConnector : {9c2c4058-23f5-41de-877a-df3af236a09e}
;
VA_IConnector_GetType(this, ByRef Type) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int*", Type)
}
VA_IConnector_GetDataFlow(this, ByRef Flow) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int*", Flow)
}
VA_IConnector_ConnectTo(this, ConnectTo) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "ptr", ConnectTo)
}
VA_IConnector_Disconnect(this) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this)
}
VA_IConnector_IsConnected(this, ByRef Connected) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "int*", Connected)
}
VA_IConnector_GetConnectedTo(this, ByRef ConTo) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "ptr*", ConTo)
}
VA_IConnector_GetConnectorIdConnectedTo(this, ByRef ConnectorId) {
    hr := DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "ptr*", ConnectorId)
    VA_WStrOut(ConnectorId)
    return hr
}
VA_IConnector_GetDeviceIdConnectedTo(this, ByRef DeviceId) {
    hr := DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this, "ptr*", DeviceId)
    VA_WStrOut(DeviceId)
    return hr
}

;
; IPart : {AE2DE0E4-5BCA-4F2D-AA46-5D13F8FDB3A9}
;
VA_IPart_GetName(this, ByRef Name) {
    hr := DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr*", Name)
    VA_WStrOut(Name)
    return hr
}
VA_IPart_GetLocalId(this, ByRef Id) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint*", Id)
}
VA_IPart_GetGlobalId(this, ByRef GlobalId) {
    hr := DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "ptr*", GlobalId)
    VA_WStrOut(GlobalId)
    return hr
}
VA_IPart_GetPartType(this, ByRef PartType) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "int*", PartType)
}
VA_IPart_GetSubType(this, ByRef SubType) {
    VarSetCapacity(SubType,16,0)
    hr := DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "ptr", &SubType)
    VA_GUIDOut(SubType)
    return hr
}
VA_IPart_GetControlInterfaceCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IPart_GetControlInterface(this, Index, ByRef InterfaceDesc) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "uint", Index, "ptr*", InterfaceDesc)
}
VA_IPart_EnumPartsIncoming(this, ByRef Parts) {
    return DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this, "ptr*", Parts)
}
VA_IPart_EnumPartsOutgoing(this, ByRef Parts) {
    return DllCall(NumGet(NumGet(this+0)+11*A_PtrSize), "ptr", this, "ptr*", Parts)
}
VA_IPart_GetTopologyObject(this, ByRef Topology) {
    return DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this, "ptr*", Topology)
}
VA_IPart_Activate(this, ClsContext, iid, ByRef Object) {
    return DllCall(NumGet(NumGet(this+0)+13*A_PtrSize), "ptr", this, "uint", ClsContext, "ptr", VA_GUID(iid), "ptr*", Object)
}
VA_IPart_RegisterControlChangeCallback(this, iid, Notify) {
    return DllCall(NumGet(NumGet(this+0)+14*A_PtrSize), "ptr", this, "ptr", VA_GUID(iid), "ptr", Notify)
}
VA_IPart_UnregisterControlChangeCallback(this, Notify) {
    return DllCall(NumGet(NumGet(this+0)+15*A_PtrSize), "ptr", this, "ptr", Notify)
}

;
; IPartsList : {6DAA848C-5EB0-45CC-AEA5-998A2CDA1FFB}
;
VA_IPartsList_GetCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IPartsList_GetPart(this, INdex, ByRef Part) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Index, "ptr*", Part)
}

;
; IAudioEndpointVolume : {5CDF2C82-841E-4546-9722-0CF74078229A}
;
VA_IAudioEndpointVolume_RegisterControlChangeNotify(this, Notify) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr", Notify)
}
VA_IAudioEndpointVolume_UnregisterControlChangeNotify(this, Notify) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "ptr", Notify)
}
VA_IAudioEndpointVolume_GetChannelCount(this, ByRef ChannelCount) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint*", ChannelCount)
}
VA_IAudioEndpointVolume_SetMasterVolumeLevel(this, LevelDB, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "float", LevelDB, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_SetMasterVolumeLevelScalar(this, Level, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "float", Level, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_GetMasterVolumeLevel(this, ByRef LevelDB) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "float*", LevelDB)
}
VA_IAudioEndpointVolume_GetMasterVolumeLevelScalar(this, ByRef Level) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "float*", Level)
}
VA_IAudioEndpointVolume_SetChannelVolumeLevel(this, Channel, LevelDB, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this, "uint", Channel, "float", LevelDB, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_SetChannelVolumeLevelScalar(this, Channel, Level, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+11*A_PtrSize), "ptr", this, "uint", Channel, "float", Level, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_GetChannelVolumeLevel(this, Channel, ByRef LevelDB) {
    return DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this, "uint", Channel, "float*", LevelDB)
}
VA_IAudioEndpointVolume_GetChannelVolumeLevelScalar(this, Channel, ByRef Level) {
    return DllCall(NumGet(NumGet(this+0)+13*A_PtrSize), "ptr", this, "uint", Channel, "float*", Level)
}
VA_IAudioEndpointVolume_SetMute(this, Mute, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+14*A_PtrSize), "ptr", this, "int", Mute, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_GetMute(this, ByRef Mute) {
    return DllCall(NumGet(NumGet(this+0)+15*A_PtrSize), "ptr", this, "int*", Mute)
}
VA_IAudioEndpointVolume_GetVolumeStepInfo(this, ByRef Step, ByRef StepCount) {
    return DllCall(NumGet(NumGet(this+0)+16*A_PtrSize), "ptr", this, "uint*", Step, "uint*", StepCount)
}
VA_IAudioEndpointVolume_VolumeStepUp(this, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+17*A_PtrSize), "ptr", this, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_VolumeStepDown(this, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+18*A_PtrSize), "ptr", this, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_QueryHardwareSupport(this, ByRef HardwareSupportMask) {
    return DllCall(NumGet(NumGet(this+0)+19*A_PtrSize), "ptr", this, "uint*", HardwareSupportMask)
}
VA_IAudioEndpointVolume_GetVolumeRange(this, ByRef MinDB, ByRef MaxDB, ByRef IncrementDB) {
    return DllCall(NumGet(NumGet(this+0)+20*A_PtrSize), "ptr", this, "float*", MinDB, "float*", MaxDB, "float*", IncrementDB)
}

;
; IPerChannelDbLevel  : {C2F8E001-F205-4BC9-99BC-C13B1E048CCB}
;   IAudioVolumeLevel : {7FB7B48F-531D-44A2-BCB3-5AD5A134B3DC}
;   IAudioBass        : {A2B1A1D9-4DB3-425D-A2B2-BD335CB3E2E5}
;   IAudioMidrange    : {5E54B6D7-B44B-40D9-9A9E-E691D9CE6EDF}
;   IAudioTreble      : {0A717812-694E-4907-B74B-BAFA5CFDCA7B}
;
VA_IPerChannelDbLevel_GetChannelCount(this, ByRef Channels) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "uint*", Channels)
}
VA_IPerChannelDbLevel_GetLevelRange(this, Channel, ByRef MinLevelDB, ByRef MaxLevelDB, ByRef Stepping) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Channel, "float*", MinLevelDB, "float*", MaxLevelDB, "float*", Stepping)
}
VA_IPerChannelDbLevel_GetLevel(this, Channel, ByRef LevelDB) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint", Channel, "float*", LevelDB)
}
VA_IPerChannelDbLevel_SetLevel(this, Channel, LevelDB, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint", Channel, "float", LevelDB, "ptr", VA_GUID(GuidEventContext))
}
VA_IPerChannelDbLevel_SetLevelUniform(this, LevelDB, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "float", LevelDB, "ptr", VA_GUID(GuidEventContext))
}
VA_IPerChannelDbLevel_SetLevelAllChannels(this, LevelsDB, ChannelCount, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "uint", LevelsDB, "uint", ChannelCount, "ptr", VA_GUID(GuidEventContext))
}

;
; IAudioMute : {DF45AEEA-B74A-4B6B-AFAD-2366B6AA012E}
;
VA_IAudioMute_SetMute(this, Muted, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int", Muted, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioMute_GetMute(this, ByRef Muted) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int*", Muted)
}

;
; IAudioAutoGainControl : {85401FD4-6DE4-4b9d-9869-2D6753A82F3C}
;
VA_IAudioAutoGainControl_GetEnabled(this, ByRef Enabled) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int*", Enabled)
}
VA_IAudioAutoGainControl_SetEnabled(this, Enable, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int", Enable, "ptr", VA_GUID(GuidEventContext))
}

;
; IAudioMeterInformation : {C02216F6-8C67-4B5B-9D00-D008E73E0064}
;
VA_IAudioMeterInformation_GetPeakValue(this, ByRef Peak) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "float*", Peak)
}
VA_IAudioMeterInformation_GetMeteringChannelCount(this, ByRef ChannelCount) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint*", ChannelCount)
}
VA_IAudioMeterInformation_GetChannelsPeakValues(this, ChannelCount, PeakValues) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint", ChannelCount, "ptr", PeakValues)
}
VA_IAudioMeterInformation_QueryHardwareSupport(this, ByRef HardwareSupportMask) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint*", HardwareSupportMask)
}

;
; IAudioClient : {1CB9AD4C-DBFA-4c32-B178-C2F568A703B2}
;
VA_IAudioClient_Initialize(this, ShareMode, StreamFlags, BufferDuration, Periodicity, Format, AudioSessionGuid) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int", ShareMode, "uint", StreamFlags, "int64", BufferDuration, "int64", Periodicity, "ptr", Format, "ptr", VA_GUID(AudioSessionGuid))
}
VA_IAudioClient_GetBufferSize(this, ByRef NumBufferFrames) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint*", NumBufferFrames)
}
VA_IAudioClient_GetStreamLatency(this, ByRef Latency) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "int64*", Latency)
}
VA_IAudioClient_GetCurrentPadding(this, ByRef NumPaddingFrames) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint*", NumPaddingFrames)
}
VA_IAudioClient_IsFormatSupported(this, ShareMode, Format, ByRef ClosestMatch) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "int", ShareMode, "ptr", Format, "ptr*", ClosestMatch)
}
VA_IAudioClient_GetMixFormat(this, ByRef Format) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "uint*", Format)
}
VA_IAudioClient_GetDevicePeriod(this, ByRef DefaultDevicePeriod, ByRef MinimumDevicePeriod) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "int64*", DefaultDevicePeriod, "int64*", MinimumDevicePeriod)
}
VA_IAudioClient_Start(this) {
    return DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this)
}
VA_IAudioClient_Stop(this) {
    return DllCall(NumGet(NumGet(this+0)+11*A_PtrSize), "ptr", this)
}
VA_IAudioClient_Reset(this) {
    return DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this)
}
VA_IAudioClient_SetEventHandle(this, eventHandle) {
    return DllCall(NumGet(NumGet(this+0)+13*A_PtrSize), "ptr", this, "ptr", eventHandle)
}
VA_IAudioClient_GetService(this, iid, ByRef Service) {
    return DllCall(NumGet(NumGet(this+0)+14*A_PtrSize), "ptr", this, "ptr", VA_GUID(iid), "ptr*", Service)
}

;
; IAudioSessionControl : {F4B1A599-7266-4319-A8CA-E70ACB11E8CD}
;
/*
AudioSessionStateInactive = 0
AudioSessionStateActive = 1
AudioSessionStateExpired = 2
*/
VA_IAudioSessionControl_GetState(this, ByRef State) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int*", State)
}
VA_IAudioSessionControl_GetDisplayName(this, ByRef DisplayName) {
    hr := DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "ptr*", DisplayName)
    VA_WStrOut(DisplayName)
    return hr
}
VA_IAudioSessionControl_SetDisplayName(this, DisplayName, EventContext) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "wstr", DisplayName, "ptr", VA_GUID(EventContext))
}
VA_IAudioSessionControl_GetIconPath(this, ByRef IconPath) {
    hr := DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "ptr*", IconPath)
    VA_WStrOut(IconPath)
    return hr
}
VA_IAudioSessionControl_SetIconPath(this, IconPath) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "wstr", IconPath)
}
VA_IAudioSessionControl_GetGroupingParam(this, ByRef Param) {
    VarSetCapacity(Param,16,0)
    hr := DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "ptr", &Param)
    VA_GUIDOut(Param)
    return hr
}
VA_IAudioSessionControl_SetGroupingParam(this, Param, EventContext) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "ptr", VA_GUID(Param), "ptr", VA_GUID(EventContext))
}
VA_IAudioSessionControl_RegisterAudioSessionNotification(this, NewNotifications) {
    return DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this, "ptr", NewNotifications)
}
VA_IAudioSessionControl_UnregisterAudioSessionNotification(this, NewNotifications) {
    return DllCall(NumGet(NumGet(this+0)+11*A_PtrSize), "ptr", this, "ptr", NewNotifications)
}

;
; IAudioSessionManager : {BFA971F1-4D5E-40BB-935E-967039BFBEE4}
;
VA_IAudioSessionManager_GetAudioSessionControl(this, AudioSessionGuid) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr", VA_GUID(AudioSessionGuid))
}
VA_IAudioSessionManager_GetSimpleAudioVolume(this, AudioSessionGuid, StreamFlags, ByRef AudioVolume) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "ptr", VA_GUID(AudioSessionGuid), "uint", StreamFlags, "uint*", AudioVolume)
}

;
; IMMDeviceEnumerator
;
VA_IMMDeviceEnumerator_EnumAudioEndpoints(this, DataFlow, StateMask, ByRef Devices) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int", DataFlow, "uint", StateMask, "ptr*", Devices)
}
VA_IMMDeviceEnumerator_GetDefaultAudioEndpoint(this, DataFlow, Role, ByRef Endpoint) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int", DataFlow, "int", Role, "ptr*", Endpoint)
}
VA_IMMDeviceEnumerator_GetDevice(this, id, ByRef Device) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "wstr", id, "ptr*", Device)
}
VA_IMMDeviceEnumerator_RegisterEndpointNotificationCallback(this, Client) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "ptr", Client)
}
VA_IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(this, Client) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "ptr", Client)
}

;
; IMMDeviceCollection
;
VA_IMMDeviceCollection_GetCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IMMDeviceCollection_Item(this, Index, ByRef Device) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Index, "ptr*", Device)
}

;
; IControlInterface
;
VA_IControlInterface_GetName(this, ByRef Name) {
    hr := DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr*", Name)
    VA_WStrOut(Name)
    return hr
}
VA_IControlInterface_GetIID(this, ByRef IID) {
    VarSetCapacity(IID,16,0)
    hr := DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "ptr", &IID)
    VA_GUIDOut(IID)
    return hr
}


/*
    INTERFACES REQUIRING WINDOWS 7 / SERVER 2008 R2
*/

;
; IAudioSessionControl2 : {bfb7ff88-7239-4fc9-8fa2-07c950be9c6d}
;   extends IAudioSessionControl
;
VA_IAudioSessionControl2_GetSessionIdentifier(this, ByRef id) {
    hr := DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this, "ptr*", id)
    VA_WStrOut(id)
    return hr
}
VA_IAudioSessionControl2_GetSessionInstanceIdentifier(this, ByRef id) {
    hr := DllCall(NumGet(NumGet(this+0)+13*A_PtrSize), "ptr", this, "ptr*", id)
    VA_WStrOut(id)
    return hr
}
VA_IAudioSessionControl2_GetProcessId(this, ByRef pid) {
    return DllCall(NumGet(NumGet(this+0)+14*A_PtrSize), "ptr", this, "uint*", pid)
}
VA_IAudioSessionControl2_IsSystemSoundsSession(this) {
    return DllCall(NumGet(NumGet(this+0)+15*A_PtrSize), "ptr", this)
}
VA_IAudioSessionControl2_SetDuckingPreference(this, OptOut) {
    return DllCall(NumGet(NumGet(this+0)+16*A_PtrSize), "ptr", this, "int", OptOut)
}

;
; IAudioSessionManager2 : {77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F}
;   extends IAudioSessionManager
;
VA_IAudioSessionManager2_GetSessionEnumerator(this, ByRef SessionEnum) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "ptr*", SessionEnum)
}
VA_IAudioSessionManager2_RegisterSessionNotification(this, SessionNotification) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "ptr", SessionNotification)
}
VA_IAudioSessionManager2_UnregisterSessionNotification(this, SessionNotification) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "ptr", SessionNotification)
}
VA_IAudioSessionManager2_RegisterDuckNotification(this, SessionNotification) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "ptr", SessionNotification)
}
VA_IAudioSessionManager2_UnregisterDuckNotification(this, SessionNotification) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "ptr", SessionNotification)
}

;
; IAudioSessionEnumerator : {E2F5BB11-0570-40CA-ACDD-3AA01277DEE8}
;
VA_IAudioSessionEnumerator_GetCount(this, ByRef SessionCount) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int*", SessionCount)
}
VA_IAudioSessionEnumerator_GetSession(this, SessionCount, ByRef Session) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int", SessionCount, "ptr*", Session)
}


/*
    UNDOCUMENTED INTERFACES
*/

; Thanks to Dave Amenta for publishing this interface - http://goo.gl/6L93L
; IID := "{568b9108-44bf-40b4-9006-86afe5b5a620}"
; CLSID := "{294935CE-F637-4E7C-A41B-AB255460B862}"
VA_xIPolicyConfigVista_SetDefaultEndpoint(this, DeviceId, Role) {
    return DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this, "wstr", DeviceId, "int", Role)
}

;
; ISimpleAudioVolume : {87CE5498-68D6-44E5-9215-6DA47EF883D8}
;
VA_ISimpleAudioVolume_SetMasterVolume(this, ByRef fLevel, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "float", fLevel, "ptr", VA_GUID(GuidEventContext))
}
VA_ISimpleAudioVolume_GetMasterVolume(this, ByRef fLevel) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "float*", fLevel)
}
VA_ISimpleAudioVolume_SetMute(this, ByRef Muted, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "int", Muted, "ptr", VA_GUID(GuidEventContext))
}
VA_ISimpleAudioVolume_GetMute(this, ByRef Muted) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "int*", Muted)
}

;Required for app specific mute
GetVolumeObject(Param = 0)
{
    static IID_IASM2 := "{77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F}"
    , IID_IASC2 := "{bfb7ff88-7239-4fc9-8fa2-07c950be9c6d}"
    , IID_ISAV := "{87CE5498-68D6-44E5-9215-6DA47EF883D8}"
    
    ; Get PID from process name
    if Param is not Integer
    {
        Process, Exist, %Param%
        Param := ErrorLevel
    }
    
    ; GetDefaultAudioEndpoint
    DAE := VA_GetDevice()
    
    ; activate the session manager
    VA_IMMDevice_Activate(DAE, IID_IASM2, 0, 0, IASM2)
    
    ; enumerate sessions for on this device
    VA_IAudioSessionManager2_GetSessionEnumerator(IASM2, IASE)
    VA_IAudioSessionEnumerator_GetCount(IASE, Count)
    
    ; search for an audio session with the required name
    Loop, % Count
    {
        ; Get the IAudioSessionControl object
        VA_IAudioSessionEnumerator_GetSession(IASE, A_Index-1, IASC)
        
        ; Query the IAudioSessionControl for an IAudioSessionControl2 object
        IASC2 := ComObjQuery(IASC, IID_IASC2)
        ObjRelease(IASC)
        
        ; Get the session's process ID
        VA_IAudioSessionControl2_GetProcessID(IASC2, SPID)
        
        ; If the process name is the one we are looking for
        if (SPID == Param)
        {
            ; Query for the ISimpleAudioVolume
            ISAV := ComObjQuery(IASC2, IID_ISAV)
            
            ObjRelease(IASC2)
            break
        }
        ObjRelease(IASC2)
    }
    ObjRelease(IASE)
    ObjRelease(IASM2)
    ObjRelease(DAE)
    return ISAV
}
OS: Windows 10 Pro | Editor: Notepad++
My Personal Function Library | Old Build - New Build
fyvmlss
Posts: 4
Joined: 28 Jul 2021, 16:31

Re: Change the volume of specific application

29 Jul 2021, 05:21

So i tried the script but i have no idea what im supposed to do with the VA.ahk (or how to just get it) and same goes to SetWindowVol(). I'm complitely lost and i don't know that to do or what i'm supposed to change or anything.. Sorry, but i'm really bad with stuff like that.
User avatar
Masonjar13
Posts: 1555
Joined: 20 Jul 2014, 10:16
Location: Не Россия
Contact:

Re: Change the volume of specific application

29 Jul 2021, 23:42

Take the second script and run it; it has VA and SetWindowVol() included. It'll swap the volume buttons to work on the active window instead. If you want to be specific with the window, see WinTitle to figure out what you want, then put it in the first parameter. Something like

Code: Select all

Volume_Up::setWindowVol("ahk_exe vlc.exe","+15")
Volume_Down::setWindowVol("ahk_exe vlc.exe","-15")
That will change the volume for VLC instead of whatever the active window is.
OS: Windows 10 Pro | Editor: Notepad++
My Personal Function Library | Old Build - New Build
fyvmlss
Posts: 4
Joined: 28 Jul 2021, 16:31

Re: Change the volume of specific application

30 Jul 2021, 04:24

The script works, but it sadly only works when the window is focused so i can't really toggle the volume when im focusing other window.. is there any way to toggle the volume anytime even if i'm focusin other applications/windows?
User avatar
submeg
Posts: 346
Joined: 14 Apr 2017, 20:39
Contact:

Re: Change the volume of specific application

30 Jul 2021, 17:49

Masonjar13 wrote:
28 Jul 2021, 16:57
You'll need VA library, then you can use SetWindowVol().

...

If you don't want to use the libraries, here's an everything-included version.

Code: Select all

Volume_Up::setWindowVol(,"+15")
Volume_Down::setWindowVol(,"-15")

setWindowVol(winName:="a",vol:="n"){
	if (vol=="n")
		return
	winGet,winPid,PID,% winName
	if !(volume:=GetVolumeObject(winPid))
		return
	vsign:=subStr(vol,1,1)
	if (vsign="+"||vsign="-") {
		vol:=subStr(vol,2),vol/=100
		
		VA_ISimpleAudioVolume_GetMasterVolume(volume,cvol)
		if (vsign="+")
			vol:=cvol+vol>1?1:cvol+vol
		else if (vsign="-")
			vol:=cvol-vol<0?0:cvol-vol
	} else
		vol/=100
	VA_ISimpleAudioVolume_SetMasterVolume(volume,vol),objRelease(volume)
}

VA_GetMasterVolume(channel="", device_desc="playback")
{
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    if channel =
        VA_IAudioEndpointVolume_GetMasterVolumeLevelScalar(aev, vol)
    else
        VA_IAudioEndpointVolume_GetChannelVolumeLevelScalar(aev, channel-1, vol)
    ObjRelease(aev)
    return Round(vol*100,3)
}

VA_SetMasterVolume(vol, channel="", device_desc="playback")
{
    vol := vol>100 ? 100 : vol<0 ? 0 : vol
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    if channel =
        VA_IAudioEndpointVolume_SetMasterVolumeLevelScalar(aev, vol/100)
    else
        VA_IAudioEndpointVolume_SetChannelVolumeLevelScalar(aev, channel-1, vol/100)
    ObjRelease(aev)
}

VA_GetMasterChannelCount(device_desc="playback")
{
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    VA_IAudioEndpointVolume_GetChannelCount(aev, count)
    ObjRelease(aev)
    return count
}

VA_SetMasterMute(mute, device_desc="playback")
{
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    VA_IAudioEndpointVolume_SetMute(aev, mute)
    ObjRelease(aev)
}

VA_GetMasterMute(device_desc="playback")
{
    if ! aev := VA_GetAudioEndpointVolume(device_desc)
        return
    VA_IAudioEndpointVolume_GetMute(aev, mute)
    ObjRelease(aev)
    return mute
}

;
; SUBUNIT CONTROLS
;

VA_GetVolume(subunit_desc="1", channel="", device_desc="playback")
{
    if ! avl := VA_GetDeviceSubunit(device_desc, subunit_desc, "{7FB7B48F-531D-44A2-BCB3-5AD5A134B3DC}")
        return
    VA_IPerChannelDbLevel_GetChannelCount(avl, channel_count)
    if channel =
    {
        vol = 0
        
        Loop, %channel_count%
        {
            VA_IPerChannelDbLevel_GetLevelRange(avl, A_Index-1, min_dB, max_dB, step_dB)
            VA_IPerChannelDbLevel_GetLevel(avl, A_Index-1, this_vol)
            this_vol := VA_dB2Scalar(this_vol, min_dB, max_dB)
            
            ; "Speakers Properties" reports the highest channel as the volume.
            if (this_vol > vol)
                vol := this_vol
        }
    }
    else if channel between 1 and channel_count
    {
        channel -= 1
        VA_IPerChannelDbLevel_GetLevelRange(avl, channel, min_dB, max_dB, step_dB)
        VA_IPerChannelDbLevel_GetLevel(avl, channel, vol)
        vol := VA_dB2Scalar(vol, min_dB, max_dB)
    }
    ObjRelease(avl)
    return vol
}

VA_SetVolume(vol, subunit_desc="1", channel="", device_desc="playback")
{
    if ! avl := VA_GetDeviceSubunit(device_desc, subunit_desc, "{7FB7B48F-531D-44A2-BCB3-5AD5A134B3DC}")
        return
    
    vol := vol<0 ? 0 : vol>100 ? 100 : vol
    
    VA_IPerChannelDbLevel_GetChannelCount(avl, channel_count)
    
    if channel =
    {
        ; Simple method -- resets balance to "center":
        ;VA_IPerChannelDbLevel_SetLevelUniform(avl, vol)
        
        vol_max = 0
        
        Loop, %channel_count%
        {
            VA_IPerChannelDbLevel_GetLevelRange(avl, A_Index-1, min_dB, max_dB, step_dB)
            VA_IPerChannelDbLevel_GetLevel(avl, A_Index-1, this_vol)
            this_vol := VA_dB2Scalar(this_vol, min_dB, max_dB)
            
            channel%A_Index%vol := this_vol
            channel%A_Index%min := min_dB
            channel%A_Index%max := max_dB
            
            ; Scale all channels relative to the loudest channel.
            ; (This is how Vista's "Speakers Properties" dialog seems to work.)
            if (this_vol > vol_max)
                vol_max := this_vol
        }
        
        Loop, %channel_count%
        {
            this_vol := vol_max ? channel%A_Index%vol / vol_max * vol : vol
            this_vol := VA_Scalar2dB(this_vol/100, channel%A_Index%min, channel%A_Index%max)            
            VA_IPerChannelDbLevel_SetLevel(avl, A_Index-1, this_vol)
        }
    }
    else if channel between 1 and %channel_count%
    {
        channel -= 1
        VA_IPerChannelDbLevel_GetLevelRange(avl, channel, min_dB, max_dB, step_dB)
        VA_IPerChannelDbLevel_SetLevel(avl, channel, VA_Scalar2dB(vol/100, min_dB, max_dB))
    }
    ObjRelease(avl)
}

VA_GetChannelCount(subunit_desc="1", device_desc="playback")
{
    if ! avl := VA_GetDeviceSubunit(device_desc, subunit_desc, "{7FB7B48F-531D-44A2-BCB3-5AD5A134B3DC}")
        return
    VA_IPerChannelDbLevel_GetChannelCount(avl, channel_count)
    ObjRelease(avl)
    return channel_count
}

VA_SetMute(mute, subunit_desc="1", device_desc="playback")
{
    if ! amute := VA_GetDeviceSubunit(device_desc, subunit_desc, "{DF45AEEA-B74A-4B6B-AFAD-2366B6AA012E}")
        return
    VA_IAudioMute_SetMute(amute, mute)
    ObjRelease(amute)
}

VA_GetMute(subunit_desc="1", device_desc="playback")
{
    if ! amute := VA_GetDeviceSubunit(device_desc, subunit_desc, "{DF45AEEA-B74A-4B6B-AFAD-2366B6AA012E}")
        return
    VA_IAudioMute_GetMute(amute, muted)
    ObjRelease(amute)
    return muted
}

;
; AUDIO METERING
;

VA_GetAudioMeter(device_desc="playback")
{
    if ! device := VA_GetDevice(device_desc)
        return 0
    VA_IMMDevice_Activate(device, "{C02216F6-8C67-4B5B-9D00-D008E73E0064}", 7, 0, audioMeter)
    ObjRelease(device)
    return audioMeter
}

VA_GetDevicePeriod(device_desc, ByRef default_period, ByRef minimum_period="")
{
    defaultPeriod := minimumPeriod := 0
    if ! device := VA_GetDevice(device_desc)
        return false
    VA_IMMDevice_Activate(device, "{1CB9AD4C-DBFA-4c32-B178-C2F568A703B2}", 7, 0, audioClient)
    ObjRelease(device)
    ; IAudioClient::GetDevicePeriod
    DllCall(NumGet(NumGet(audioClient+0)+9*A_PtrSize), "ptr",audioClient, "int64*",default_period, "int64*",minimum_period)
    ; Convert 100-nanosecond units to milliseconds.
    default_period /= 10000
    minimum_period /= 10000    
    ObjRelease(audioClient)
    return true
}

VA_GetAudioEndpointVolume(device_desc="playback")
{
    if ! device := VA_GetDevice(device_desc)
        return 0
    VA_IMMDevice_Activate(device, "{5CDF2C82-841E-4546-9722-0CF74078229A}", 7, 0, endpointVolume)
    ObjRelease(device)
    return endpointVolume
}

VA_GetDeviceSubunit(device_desc, subunit_desc, subunit_iid)
{
    if ! device := VA_GetDevice(device_desc)
        return 0
    subunit := VA_FindSubunit(device, subunit_desc, subunit_iid)
    ObjRelease(device)
    return subunit
}

VA_FindSubunit(device, target_desc, target_iid)
{
    if target_desc is integer
        target_index := target_desc
    else
        RegExMatch(target_desc, "(?<_name>.*?)(?::(?<_index>\d+))?$", target)
    ; v2.01: Since target_name is now a regular expression, default to case-insensitive mode if no options are specified.
    if !RegExMatch(target_name,"^[^\(]+\)")
        target_name := "i)" target_name
    r := VA_EnumSubunits(device, "VA_FindSubunitCallback", target_name, target_iid
            , Object(0, target_index ? target_index : 1, 1, 0))
    return r
}

VA_FindSubunitCallback(part, interface, index)
{
    index[1] := index[1] + 1 ; current += 1
    if (index[0] == index[1]) ; target == current ?
    {
        ObjAddRef(interface)
        return interface
    }
}

VA_EnumSubunits(device, callback, target_name="", target_iid="", callback_param="")
{
    VA_IMMDevice_Activate(device, "{2A07407E-6497-4A18-9787-32F79BD0D98F}", 7, 0, deviceTopology)
    VA_IDeviceTopology_GetConnector(deviceTopology, 0, conn)
    ObjRelease(deviceTopology)
    VA_IConnector_GetConnectedTo(conn, conn_to)
    VA_IConnector_GetDataFlow(conn, data_flow)
    ObjRelease(conn)
    if !conn_to
        return ; blank to indicate error
    part := ComObjQuery(conn_to, "{AE2DE0E4-5BCA-4F2D-AA46-5D13F8FDB3A9}") ; IID_IPart
    ObjRelease(conn_to)
    if !part
        return
    r := VA_EnumSubunitsEx(part, data_flow, callback, target_name, target_iid, callback_param)
    ObjRelease(part)
    return r ; value returned by callback, or zero.
}

VA_EnumSubunitsEx(part, data_flow, callback, target_name="", target_iid="", callback_param="")
{
    r := 0
    
    VA_IPart_GetPartType(part, type)
   
    if type = 1 ; Subunit
    {
        VA_IPart_GetName(part, name)
        
        ; v2.01: target_name is now a regular expression.
        if RegExMatch(name, target_name)
        {
            if target_iid =
                r := %callback%(part, 0, callback_param)
            else
                if VA_IPart_Activate(part, 7, target_iid, interface) = 0
                {
                    r := %callback%(part, interface, callback_param)
                    ; The callback is responsible for calling ObjAddRef()
                    ; if it intends to keep the interface pointer.
                    ObjRelease(interface)
                }

            if r
                return r ; early termination
        }
    }
    
    if data_flow = 0
        VA_IPart_EnumPartsIncoming(part, parts)
    else
        VA_IPart_EnumPartsOutgoing(part, parts)
    
    VA_IPartsList_GetCount(parts, count)
    Loop %count%
    {
        VA_IPartsList_GetPart(parts, A_Index-1, subpart)        
        r := VA_EnumSubunitsEx(subpart, data_flow, callback, target_name, target_iid, callback_param)
        ObjRelease(subpart)
        if r
            break ; early termination
    }
    ObjRelease(parts)
    return r ; continue/finished enumeration
}

; device_desc = device_id
;               | ( friendly_name | 'playback' | 'capture' ) [ ':' index ]
VA_GetDevice(device_desc="playback")
{
    static CLSID_MMDeviceEnumerator := "{BCDE0395-E52F-467C-8E3D-C4579291692E}"
        , IID_IMMDeviceEnumerator := "{A95664D2-9614-4F35-A746-DE8DB63617E6}"
    if !(deviceEnumerator := ComObjCreate(CLSID_MMDeviceEnumerator, IID_IMMDeviceEnumerator))
        return 0
    
    device := 0
    
    if VA_IMMDeviceEnumerator_GetDevice(deviceEnumerator, device_desc, device) = 0
        goto VA_GetDevice_Return
    
    if device_desc is integer
    {
        m2 := device_desc
        if m2 >= 4096 ; Probably a device pointer, passed here indirectly via VA_GetAudioMeter or such.
        {
            ObjAddRef(device := m2)
            goto VA_GetDevice_Return
        }
    }
    else
        RegExMatch(device_desc, "(.*?)\s*(?::(\d+))?$", m)
    
    if m1 in playback,p
        m1 := "", flow := 0 ; eRender
    else if m1 in capture,c
        m1 := "", flow := 1 ; eCapture
    else if (m1 . m2) = ""  ; no name or number specified
        m1 := "", flow := 0 ; eRender (default)
    else
        flow := 2 ; eAll
    
    if (m1 . m2) = ""   ; no name or number (maybe "playback" or "capture")
    {
        VA_IMMDeviceEnumerator_GetDefaultAudioEndpoint(deviceEnumerator, flow, 0, device)
        goto VA_GetDevice_Return
    }

    VA_IMMDeviceEnumerator_EnumAudioEndpoints(deviceEnumerator, flow, 1, devices)
    
    if m1 =
    {
        VA_IMMDeviceCollection_Item(devices, m2-1, device)
        goto VA_GetDevice_Return
    }
    
    VA_IMMDeviceCollection_GetCount(devices, count)
    index := 0
    Loop % count
        if VA_IMMDeviceCollection_Item(devices, A_Index-1, device) = 0
            if InStr(VA_GetDeviceName(device), m1) && (m2 = "" || ++index = m2)
                goto VA_GetDevice_Return
            else
                ObjRelease(device), device:=0

VA_GetDevice_Return:
    ObjRelease(deviceEnumerator)
    if devices
        ObjRelease(devices)
    
    return device ; may be 0
}

VA_GetDeviceName(device)
{
    static PKEY_Device_FriendlyName
    if !VarSetCapacity(PKEY_Device_FriendlyName)
        VarSetCapacity(PKEY_Device_FriendlyName, 20)
        ,VA_GUID(PKEY_Device_FriendlyName :="{A45C254E-DF1C-4EFD-8020-67D146A850E0}")
        ,NumPut(14, PKEY_Device_FriendlyName, 16)
    VarSetCapacity(prop, 16)
    VA_IMMDevice_OpenPropertyStore(device, 0, store)
    ; store->GetValue(.., [out] prop)
    DllCall(NumGet(NumGet(store+0)+5*A_PtrSize), "ptr", store, "ptr", &PKEY_Device_FriendlyName, "ptr", &prop)
    ObjRelease(store)
    VA_WStrOut(deviceName := NumGet(prop,8))
    return deviceName
}

VA_SetDefaultEndpoint(device_desc, role)
{
    /* Roles:
         eConsole        = 0  ; Default Device
         eMultimedia     = 1
         eCommunications = 2  ; Default Communications Device
    */
    if ! device := VA_GetDevice(device_desc)
        return 0
    if VA_IMMDevice_GetId(device, id) = 0
    {
        cfg := ComObjCreate("{294935CE-F637-4E7C-A41B-AB255460B862}"
                          , "{568b9108-44bf-40b4-9006-86afe5b5a620}")
        hr := VA_xIPolicyConfigVista_SetDefaultEndpoint(cfg, id, role)
        ObjRelease(cfg)
    }
    ObjRelease(device)
    return hr = 0
}


;
; HELPERS
;

; Convert string to binary GUID structure.
VA_GUID(ByRef guid_out, guid_in="%guid_out%") {
    if (guid_in == "%guid_out%")
        guid_in :=   guid_out
    if  guid_in is integer
        return guid_in
    VarSetCapacity(guid_out, 16, 0)
	DllCall("ole32\CLSIDFromString", "wstr", guid_in, "ptr", &guid_out)
	return &guid_out
}

; Convert binary GUID structure to string.
VA_GUIDOut(ByRef guid) {
    VarSetCapacity(buf, 78)
    DllCall("ole32\StringFromGUID2", "ptr", &guid, "ptr", &buf, "int", 39)
    guid := StrGet(&buf, "UTF-16")
}

; Convert COM-allocated wide char string pointer to usable string.
VA_WStrOut(ByRef str) {
    str := StrGet(ptr := str, "UTF-16")
    DllCall("ole32\CoTaskMemFree", "ptr", ptr)  ; FREES THE STRING.
}

VA_dB2Scalar(dB, min_dB, max_dB) {
    min_s := 10**(min_dB/20), max_s := 10**(max_dB/20)
    return ((10**(dB/20))-min_s)/(max_s-min_s)*100
}

VA_Scalar2dB(s, min_dB, max_dB) {
    min_s := 10**(min_dB/20), max_s := 10**(max_dB/20)
    return log((max_s-min_s)*s+min_s)*20
}


;
; INTERFACE WRAPPERS
;   Reference: Core Audio APIs in Windows Vista -- Programming Reference
;       http://msdn2.microsoft.com/en-us/library/ms679156(VS.85).aspx
;

;
; IMMDevice : {D666063F-1587-4E43-81F1-B948E807363F}
;
VA_IMMDevice_Activate(this, iid, ClsCtx, ActivationParams, ByRef Interface) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr", VA_GUID(iid), "uint", ClsCtx, "uint", ActivationParams, "ptr*", Interface)
}
VA_IMMDevice_OpenPropertyStore(this, Access, ByRef Properties) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Access, "ptr*", Properties)
}
VA_IMMDevice_GetId(this, ByRef Id) {
    hr := DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint*", Id)
    VA_WStrOut(Id)
    return hr
}
VA_IMMDevice_GetState(this, ByRef State) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint*", State)
}

;
; IDeviceTopology : {2A07407E-6497-4A18-9787-32F79BD0D98F}
;
VA_IDeviceTopology_GetConnectorCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IDeviceTopology_GetConnector(this, Index, ByRef Connector) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Index, "ptr*", Connector)
}
VA_IDeviceTopology_GetSubunitCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IDeviceTopology_GetSubunit(this, Index, ByRef Subunit) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint", Index, "ptr*", Subunit)
}
VA_IDeviceTopology_GetPartById(this, Id, ByRef Part) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "uint", Id, "ptr*", Part)
}
VA_IDeviceTopology_GetDeviceId(this, ByRef DeviceId) {
    hr := DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "uint*", DeviceId)
    VA_WStrOut(DeviceId)
    return hr
}
VA_IDeviceTopology_GetSignalPath(this, PartFrom, PartTo, RejectMixedPaths, ByRef Parts) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "ptr", PartFrom, "ptr", PartTo, "int", RejectMixedPaths, "ptr*", Parts)
}

;
; IConnector : {9c2c4058-23f5-41de-877a-df3af236a09e}
;
VA_IConnector_GetType(this, ByRef Type) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int*", Type)
}
VA_IConnector_GetDataFlow(this, ByRef Flow) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int*", Flow)
}
VA_IConnector_ConnectTo(this, ConnectTo) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "ptr", ConnectTo)
}
VA_IConnector_Disconnect(this) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this)
}
VA_IConnector_IsConnected(this, ByRef Connected) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "int*", Connected)
}
VA_IConnector_GetConnectedTo(this, ByRef ConTo) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "ptr*", ConTo)
}
VA_IConnector_GetConnectorIdConnectedTo(this, ByRef ConnectorId) {
    hr := DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "ptr*", ConnectorId)
    VA_WStrOut(ConnectorId)
    return hr
}
VA_IConnector_GetDeviceIdConnectedTo(this, ByRef DeviceId) {
    hr := DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this, "ptr*", DeviceId)
    VA_WStrOut(DeviceId)
    return hr
}

;
; IPart : {AE2DE0E4-5BCA-4F2D-AA46-5D13F8FDB3A9}
;
VA_IPart_GetName(this, ByRef Name) {
    hr := DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr*", Name)
    VA_WStrOut(Name)
    return hr
}
VA_IPart_GetLocalId(this, ByRef Id) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint*", Id)
}
VA_IPart_GetGlobalId(this, ByRef GlobalId) {
    hr := DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "ptr*", GlobalId)
    VA_WStrOut(GlobalId)
    return hr
}
VA_IPart_GetPartType(this, ByRef PartType) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "int*", PartType)
}
VA_IPart_GetSubType(this, ByRef SubType) {
    VarSetCapacity(SubType,16,0)
    hr := DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "ptr", &SubType)
    VA_GUIDOut(SubType)
    return hr
}
VA_IPart_GetControlInterfaceCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IPart_GetControlInterface(this, Index, ByRef InterfaceDesc) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "uint", Index, "ptr*", InterfaceDesc)
}
VA_IPart_EnumPartsIncoming(this, ByRef Parts) {
    return DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this, "ptr*", Parts)
}
VA_IPart_EnumPartsOutgoing(this, ByRef Parts) {
    return DllCall(NumGet(NumGet(this+0)+11*A_PtrSize), "ptr", this, "ptr*", Parts)
}
VA_IPart_GetTopologyObject(this, ByRef Topology) {
    return DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this, "ptr*", Topology)
}
VA_IPart_Activate(this, ClsContext, iid, ByRef Object) {
    return DllCall(NumGet(NumGet(this+0)+13*A_PtrSize), "ptr", this, "uint", ClsContext, "ptr", VA_GUID(iid), "ptr*", Object)
}
VA_IPart_RegisterControlChangeCallback(this, iid, Notify) {
    return DllCall(NumGet(NumGet(this+0)+14*A_PtrSize), "ptr", this, "ptr", VA_GUID(iid), "ptr", Notify)
}
VA_IPart_UnregisterControlChangeCallback(this, Notify) {
    return DllCall(NumGet(NumGet(this+0)+15*A_PtrSize), "ptr", this, "ptr", Notify)
}

;
; IPartsList : {6DAA848C-5EB0-45CC-AEA5-998A2CDA1FFB}
;
VA_IPartsList_GetCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IPartsList_GetPart(this, INdex, ByRef Part) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Index, "ptr*", Part)
}

;
; IAudioEndpointVolume : {5CDF2C82-841E-4546-9722-0CF74078229A}
;
VA_IAudioEndpointVolume_RegisterControlChangeNotify(this, Notify) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr", Notify)
}
VA_IAudioEndpointVolume_UnregisterControlChangeNotify(this, Notify) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "ptr", Notify)
}
VA_IAudioEndpointVolume_GetChannelCount(this, ByRef ChannelCount) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint*", ChannelCount)
}
VA_IAudioEndpointVolume_SetMasterVolumeLevel(this, LevelDB, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "float", LevelDB, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_SetMasterVolumeLevelScalar(this, Level, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "float", Level, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_GetMasterVolumeLevel(this, ByRef LevelDB) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "float*", LevelDB)
}
VA_IAudioEndpointVolume_GetMasterVolumeLevelScalar(this, ByRef Level) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "float*", Level)
}
VA_IAudioEndpointVolume_SetChannelVolumeLevel(this, Channel, LevelDB, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this, "uint", Channel, "float", LevelDB, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_SetChannelVolumeLevelScalar(this, Channel, Level, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+11*A_PtrSize), "ptr", this, "uint", Channel, "float", Level, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_GetChannelVolumeLevel(this, Channel, ByRef LevelDB) {
    return DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this, "uint", Channel, "float*", LevelDB)
}
VA_IAudioEndpointVolume_GetChannelVolumeLevelScalar(this, Channel, ByRef Level) {
    return DllCall(NumGet(NumGet(this+0)+13*A_PtrSize), "ptr", this, "uint", Channel, "float*", Level)
}
VA_IAudioEndpointVolume_SetMute(this, Mute, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+14*A_PtrSize), "ptr", this, "int", Mute, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_GetMute(this, ByRef Mute) {
    return DllCall(NumGet(NumGet(this+0)+15*A_PtrSize), "ptr", this, "int*", Mute)
}
VA_IAudioEndpointVolume_GetVolumeStepInfo(this, ByRef Step, ByRef StepCount) {
    return DllCall(NumGet(NumGet(this+0)+16*A_PtrSize), "ptr", this, "uint*", Step, "uint*", StepCount)
}
VA_IAudioEndpointVolume_VolumeStepUp(this, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+17*A_PtrSize), "ptr", this, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_VolumeStepDown(this, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+18*A_PtrSize), "ptr", this, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioEndpointVolume_QueryHardwareSupport(this, ByRef HardwareSupportMask) {
    return DllCall(NumGet(NumGet(this+0)+19*A_PtrSize), "ptr", this, "uint*", HardwareSupportMask)
}
VA_IAudioEndpointVolume_GetVolumeRange(this, ByRef MinDB, ByRef MaxDB, ByRef IncrementDB) {
    return DllCall(NumGet(NumGet(this+0)+20*A_PtrSize), "ptr", this, "float*", MinDB, "float*", MaxDB, "float*", IncrementDB)
}

;
; IPerChannelDbLevel  : {C2F8E001-F205-4BC9-99BC-C13B1E048CCB}
;   IAudioVolumeLevel : {7FB7B48F-531D-44A2-BCB3-5AD5A134B3DC}
;   IAudioBass        : {A2B1A1D9-4DB3-425D-A2B2-BD335CB3E2E5}
;   IAudioMidrange    : {5E54B6D7-B44B-40D9-9A9E-E691D9CE6EDF}
;   IAudioTreble      : {0A717812-694E-4907-B74B-BAFA5CFDCA7B}
;
VA_IPerChannelDbLevel_GetChannelCount(this, ByRef Channels) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "uint*", Channels)
}
VA_IPerChannelDbLevel_GetLevelRange(this, Channel, ByRef MinLevelDB, ByRef MaxLevelDB, ByRef Stepping) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Channel, "float*", MinLevelDB, "float*", MaxLevelDB, "float*", Stepping)
}
VA_IPerChannelDbLevel_GetLevel(this, Channel, ByRef LevelDB) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint", Channel, "float*", LevelDB)
}
VA_IPerChannelDbLevel_SetLevel(this, Channel, LevelDB, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint", Channel, "float", LevelDB, "ptr", VA_GUID(GuidEventContext))
}
VA_IPerChannelDbLevel_SetLevelUniform(this, LevelDB, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "float", LevelDB, "ptr", VA_GUID(GuidEventContext))
}
VA_IPerChannelDbLevel_SetLevelAllChannels(this, LevelsDB, ChannelCount, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "uint", LevelsDB, "uint", ChannelCount, "ptr", VA_GUID(GuidEventContext))
}

;
; IAudioMute : {DF45AEEA-B74A-4B6B-AFAD-2366B6AA012E}
;
VA_IAudioMute_SetMute(this, Muted, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int", Muted, "ptr", VA_GUID(GuidEventContext))
}
VA_IAudioMute_GetMute(this, ByRef Muted) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int*", Muted)
}

;
; IAudioAutoGainControl : {85401FD4-6DE4-4b9d-9869-2D6753A82F3C}
;
VA_IAudioAutoGainControl_GetEnabled(this, ByRef Enabled) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int*", Enabled)
}
VA_IAudioAutoGainControl_SetEnabled(this, Enable, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int", Enable, "ptr", VA_GUID(GuidEventContext))
}

;
; IAudioMeterInformation : {C02216F6-8C67-4B5B-9D00-D008E73E0064}
;
VA_IAudioMeterInformation_GetPeakValue(this, ByRef Peak) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "float*", Peak)
}
VA_IAudioMeterInformation_GetMeteringChannelCount(this, ByRef ChannelCount) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint*", ChannelCount)
}
VA_IAudioMeterInformation_GetChannelsPeakValues(this, ChannelCount, PeakValues) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "uint", ChannelCount, "ptr", PeakValues)
}
VA_IAudioMeterInformation_QueryHardwareSupport(this, ByRef HardwareSupportMask) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint*", HardwareSupportMask)
}

;
; IAudioClient : {1CB9AD4C-DBFA-4c32-B178-C2F568A703B2}
;
VA_IAudioClient_Initialize(this, ShareMode, StreamFlags, BufferDuration, Periodicity, Format, AudioSessionGuid) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int", ShareMode, "uint", StreamFlags, "int64", BufferDuration, "int64", Periodicity, "ptr", Format, "ptr", VA_GUID(AudioSessionGuid))
}
VA_IAudioClient_GetBufferSize(this, ByRef NumBufferFrames) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint*", NumBufferFrames)
}
VA_IAudioClient_GetStreamLatency(this, ByRef Latency) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "int64*", Latency)
}
VA_IAudioClient_GetCurrentPadding(this, ByRef NumPaddingFrames) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "uint*", NumPaddingFrames)
}
VA_IAudioClient_IsFormatSupported(this, ShareMode, Format, ByRef ClosestMatch) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "int", ShareMode, "ptr", Format, "ptr*", ClosestMatch)
}
VA_IAudioClient_GetMixFormat(this, ByRef Format) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "uint*", Format)
}
VA_IAudioClient_GetDevicePeriod(this, ByRef DefaultDevicePeriod, ByRef MinimumDevicePeriod) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "int64*", DefaultDevicePeriod, "int64*", MinimumDevicePeriod)
}
VA_IAudioClient_Start(this) {
    return DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this)
}
VA_IAudioClient_Stop(this) {
    return DllCall(NumGet(NumGet(this+0)+11*A_PtrSize), "ptr", this)
}
VA_IAudioClient_Reset(this) {
    return DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this)
}
VA_IAudioClient_SetEventHandle(this, eventHandle) {
    return DllCall(NumGet(NumGet(this+0)+13*A_PtrSize), "ptr", this, "ptr", eventHandle)
}
VA_IAudioClient_GetService(this, iid, ByRef Service) {
    return DllCall(NumGet(NumGet(this+0)+14*A_PtrSize), "ptr", this, "ptr", VA_GUID(iid), "ptr*", Service)
}

;
; IAudioSessionControl : {F4B1A599-7266-4319-A8CA-E70ACB11E8CD}
;
/*
AudioSessionStateInactive = 0
AudioSessionStateActive = 1
AudioSessionStateExpired = 2
*/
VA_IAudioSessionControl_GetState(this, ByRef State) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int*", State)
}
VA_IAudioSessionControl_GetDisplayName(this, ByRef DisplayName) {
    hr := DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "ptr*", DisplayName)
    VA_WStrOut(DisplayName)
    return hr
}
VA_IAudioSessionControl_SetDisplayName(this, DisplayName, EventContext) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "wstr", DisplayName, "ptr", VA_GUID(EventContext))
}
VA_IAudioSessionControl_GetIconPath(this, ByRef IconPath) {
    hr := DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "ptr*", IconPath)
    VA_WStrOut(IconPath)
    return hr
}
VA_IAudioSessionControl_SetIconPath(this, IconPath) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "wstr", IconPath)
}
VA_IAudioSessionControl_GetGroupingParam(this, ByRef Param) {
    VarSetCapacity(Param,16,0)
    hr := DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "ptr", &Param)
    VA_GUIDOut(Param)
    return hr
}
VA_IAudioSessionControl_SetGroupingParam(this, Param, EventContext) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "ptr", VA_GUID(Param), "ptr", VA_GUID(EventContext))
}
VA_IAudioSessionControl_RegisterAudioSessionNotification(this, NewNotifications) {
    return DllCall(NumGet(NumGet(this+0)+10*A_PtrSize), "ptr", this, "ptr", NewNotifications)
}
VA_IAudioSessionControl_UnregisterAudioSessionNotification(this, NewNotifications) {
    return DllCall(NumGet(NumGet(this+0)+11*A_PtrSize), "ptr", this, "ptr", NewNotifications)
}

;
; IAudioSessionManager : {BFA971F1-4D5E-40BB-935E-967039BFBEE4}
;
VA_IAudioSessionManager_GetAudioSessionControl(this, AudioSessionGuid) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr", VA_GUID(AudioSessionGuid))
}
VA_IAudioSessionManager_GetSimpleAudioVolume(this, AudioSessionGuid, StreamFlags, ByRef AudioVolume) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "ptr", VA_GUID(AudioSessionGuid), "uint", StreamFlags, "uint*", AudioVolume)
}

;
; IMMDeviceEnumerator
;
VA_IMMDeviceEnumerator_EnumAudioEndpoints(this, DataFlow, StateMask, ByRef Devices) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int", DataFlow, "uint", StateMask, "ptr*", Devices)
}
VA_IMMDeviceEnumerator_GetDefaultAudioEndpoint(this, DataFlow, Role, ByRef Endpoint) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int", DataFlow, "int", Role, "ptr*", Endpoint)
}
VA_IMMDeviceEnumerator_GetDevice(this, id, ByRef Device) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "wstr", id, "ptr*", Device)
}
VA_IMMDeviceEnumerator_RegisterEndpointNotificationCallback(this, Client) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "ptr", Client)
}
VA_IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(this, Client) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "ptr", Client)
}

;
; IMMDeviceCollection
;
VA_IMMDeviceCollection_GetCount(this, ByRef Count) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "uint*", Count)
}
VA_IMMDeviceCollection_Item(this, Index, ByRef Device) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "uint", Index, "ptr*", Device)
}

;
; IControlInterface
;
VA_IControlInterface_GetName(this, ByRef Name) {
    hr := DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "ptr*", Name)
    VA_WStrOut(Name)
    return hr
}
VA_IControlInterface_GetIID(this, ByRef IID) {
    VarSetCapacity(IID,16,0)
    hr := DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "ptr", &IID)
    VA_GUIDOut(IID)
    return hr
}


/*
    INTERFACES REQUIRING WINDOWS 7 / SERVER 2008 R2
*/

;
; IAudioSessionControl2 : {bfb7ff88-7239-4fc9-8fa2-07c950be9c6d}
;   extends IAudioSessionControl
;
VA_IAudioSessionControl2_GetSessionIdentifier(this, ByRef id) {
    hr := DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this, "ptr*", id)
    VA_WStrOut(id)
    return hr
}
VA_IAudioSessionControl2_GetSessionInstanceIdentifier(this, ByRef id) {
    hr := DllCall(NumGet(NumGet(this+0)+13*A_PtrSize), "ptr", this, "ptr*", id)
    VA_WStrOut(id)
    return hr
}
VA_IAudioSessionControl2_GetProcessId(this, ByRef pid) {
    return DllCall(NumGet(NumGet(this+0)+14*A_PtrSize), "ptr", this, "uint*", pid)
}
VA_IAudioSessionControl2_IsSystemSoundsSession(this) {
    return DllCall(NumGet(NumGet(this+0)+15*A_PtrSize), "ptr", this)
}
VA_IAudioSessionControl2_SetDuckingPreference(this, OptOut) {
    return DllCall(NumGet(NumGet(this+0)+16*A_PtrSize), "ptr", this, "int", OptOut)
}

;
; IAudioSessionManager2 : {77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F}
;   extends IAudioSessionManager
;
VA_IAudioSessionManager2_GetSessionEnumerator(this, ByRef SessionEnum) {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "ptr*", SessionEnum)
}
VA_IAudioSessionManager2_RegisterSessionNotification(this, SessionNotification) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "ptr", SessionNotification)
}
VA_IAudioSessionManager2_UnregisterSessionNotification(this, SessionNotification) {
    return DllCall(NumGet(NumGet(this+0)+7*A_PtrSize), "ptr", this, "ptr", SessionNotification)
}
VA_IAudioSessionManager2_RegisterDuckNotification(this, SessionNotification) {
    return DllCall(NumGet(NumGet(this+0)+8*A_PtrSize), "ptr", this, "ptr", SessionNotification)
}
VA_IAudioSessionManager2_UnregisterDuckNotification(this, SessionNotification) {
    return DllCall(NumGet(NumGet(this+0)+9*A_PtrSize), "ptr", this, "ptr", SessionNotification)
}

;
; IAudioSessionEnumerator : {E2F5BB11-0570-40CA-ACDD-3AA01277DEE8}
;
VA_IAudioSessionEnumerator_GetCount(this, ByRef SessionCount) {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "int*", SessionCount)
}
VA_IAudioSessionEnumerator_GetSession(this, SessionCount, ByRef Session) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "int", SessionCount, "ptr*", Session)
}


/*
    UNDOCUMENTED INTERFACES
*/

; Thanks to Dave Amenta for publishing this interface - http://goo.gl/6L93L
; IID := "{568b9108-44bf-40b4-9006-86afe5b5a620}"
; CLSID := "{294935CE-F637-4E7C-A41B-AB255460B862}"
VA_xIPolicyConfigVista_SetDefaultEndpoint(this, DeviceId, Role) {
    return DllCall(NumGet(NumGet(this+0)+12*A_PtrSize), "ptr", this, "wstr", DeviceId, "int", Role)
}

;
; ISimpleAudioVolume : {87CE5498-68D6-44E5-9215-6DA47EF883D8}
;
VA_ISimpleAudioVolume_SetMasterVolume(this, ByRef fLevel, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+3*A_PtrSize), "ptr", this, "float", fLevel, "ptr", VA_GUID(GuidEventContext))
}
VA_ISimpleAudioVolume_GetMasterVolume(this, ByRef fLevel) {
    return DllCall(NumGet(NumGet(this+0)+4*A_PtrSize), "ptr", this, "float*", fLevel)
}
VA_ISimpleAudioVolume_SetMute(this, ByRef Muted, GuidEventContext="") {
    return DllCall(NumGet(NumGet(this+0)+5*A_PtrSize), "ptr", this, "int", Muted, "ptr", VA_GUID(GuidEventContext))
}
VA_ISimpleAudioVolume_GetMute(this, ByRef Muted) {
    return DllCall(NumGet(NumGet(this+0)+6*A_PtrSize), "ptr", this, "int*", Muted)
}

;Required for app specific mute
GetVolumeObject(Param = 0)
{
    static IID_IASM2 := "{77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F}"
    , IID_IASC2 := "{bfb7ff88-7239-4fc9-8fa2-07c950be9c6d}"
    , IID_ISAV := "{87CE5498-68D6-44E5-9215-6DA47EF883D8}"
    
    ; Get PID from process name
    if Param is not Integer
    {
        Process, Exist, %Param%
        Param := ErrorLevel
    }
    
    ; GetDefaultAudioEndpoint
    DAE := VA_GetDevice()
    
    ; activate the session manager
    VA_IMMDevice_Activate(DAE, IID_IASM2, 0, 0, IASM2)
    
    ; enumerate sessions for on this device
    VA_IAudioSessionManager2_GetSessionEnumerator(IASM2, IASE)
    VA_IAudioSessionEnumerator_GetCount(IASE, Count)
    
    ; search for an audio session with the required name
    Loop, % Count
    {
        ; Get the IAudioSessionControl object
        VA_IAudioSessionEnumerator_GetSession(IASE, A_Index-1, IASC)
        
        ; Query the IAudioSessionControl for an IAudioSessionControl2 object
        IASC2 := ComObjQuery(IASC, IID_IASC2)
        ObjRelease(IASC)
        
        ; Get the session's process ID
        VA_IAudioSessionControl2_GetProcessID(IASC2, SPID)
        
        ; If the process name is the one we are looking for
        if (SPID == Param)
        {
            ; Query for the ISimpleAudioVolume
            ISAV := ComObjQuery(IASC2, IID_ISAV)
            
            ObjRelease(IASC2)
            break
        }
        ObjRelease(IASC2)
    }
    ObjRelease(IASE)
    ObjRelease(IASM2)
    ObjRelease(DAE)
    return ISAV
}
Hey @Masonjar13, I grabbed the long code to just throw it into a test script and then I used the below to try and bump up the volume, however it didn't do anything?

!a::setWindowVol(,"+15")
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Masonjar13
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Re: Change the volume of specific application

30 Jul 2021, 18:09

fyvmlss wrote:
30 Jul 2021, 04:24
The script works, but it sadly only works when the window is focused so i can't really toggle the volume when im focusing other window.. is there any way to toggle the volume anytime even if i'm focusin other applications/windows?
I answered this in my last message, you'll need to give it a valid WinTitle.
submeg wrote:
Hey @Masonjar13, I grabbed the long code to just throw it into a test script and then I used the below to try and bump up the volume, however it didn't do anything?

!a::setWindowVol(,"+15")
Try running as admin. I use the following on a daily basis, works fine.

Code: Select all

^Volume_Up::setWindowVol(,"+2")
^Volume_Down::setWindowVol(,"-2")
Only other possible affecting difference are hooks being explicitly installed (mouse and keyboard).

It could also be that you're trying to add above 100, which doesn't work. This function specifically changes the process volume as displayed in the mixer. Process volumes, at 100%, are equal to the master volume, but this does not change the master volume.
OS: Windows 10 Pro | Editor: Notepad++
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submeg
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Re: Change the volume of specific application

30 Jul 2021, 19:31

Masonjar13 wrote:
30 Jul 2021, 18:09
Try running as admin. I use the following on a daily basis, works fine.

Code: Select all

^Volume_Up::setWindowVol(,"+2")
^Volume_Down::setWindowVol(,"-2")
Only other possible affecting difference are hooks being explicitly installed (mouse and keyboard).

It could also be that you're trying to add above 100, which doesn't work. This function specifically changes the process volume as displayed in the mixer. Process volumes, at 100%, are equal to the master volume, but this does not change the master volume.
I logged into my admin account, but no luck. How can you force a script to run as admin?

regarding the hooks, I have this script as a stand alone and not running anything else at the time just so I can see how it works. Volume was at 18% at the time.
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Masonjar13
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Re: Change the volume of specific application

30 Jul 2021, 19:54

I tried the code as I posted it, in a separate script, using !a as you did, worked fine for me. Right-click the script > Run as administrator.

Edit: again, it doesn't alter the master volume. The mixer doesn't show process volume percentage, you can only determine that by looking at it (or you can use parts of the function to return the percentage). How you can test it is to go into the mixer, lower the volume of a particular process, click back onto the window of the process, use your hotkey, then check the mixer again.

Edit 2: I took a screenshot, perhaps that will make it more clear what is happening.
Image
In the image, the master volume is 20, and the system sounds are at 10. Doing setWindowVol(,50) will produce this (though I don't know the actual process for system sounds, I keep them disabled), because 10 is 50% of 20, which is the current max. If you increase the master volume, the system sounds will follow, maintaining 50% of the master volume, eg, if you change master to 50, system sounds would be 25. If you do setWindowVol(,"+25"), system sounds would be 75% of the master volume. At master 20, this makes system sounds 15.
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submeg
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Re: Change the volume of specific application

30 Jul 2021, 21:09

Masonjar13 wrote:
30 Jul 2021, 19:54
...

Edit: again, it doesn't alter the master volume...How you can test it is to go into the mixer, lower the volume of a particular process, click back onto the window of the process, use your hotkey, then check the mixer again.
thanks @Masonjar13 , I understand now. Yes, you are quite correct, it does edit the volume of the active application. Thank you very much for that.

Is there a way to modify the volume of a program that is not active, without using the name of the application? For example, Spotify's name changes as the song changes, but the class and the process ID would stay the same. Is it possible to use a different identifier?
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Masonjar13
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Re: Change the volume of specific application

30 Jul 2021, 21:37

submeg wrote:
30 Jul 2021, 21:09
Is there a way to modify the volume of a program that is not active, without using the name of the application? For example, Spotify's name changes as the song changes, but the class and the process ID would stay the same. Is it possible to use a different identifier?
Yep, in the example from my second post, you'll see I use the exe name rather than the name of the window. As you said, using the name is really unreliable, so using the window class and/or exe is often the best option. Note that this doesn't change the volume within Spotify, same goes for VLC or any other media player. They have their own integrated volume sliders. For VLC, you can do ControlSend to send whatever hotkeys trigger the volume (changeable I think), for Spotify, there are a few different solutions. Spotify keeps it's internal volume level synced in the cloud, which is what allows you to control the app on your computer via your phone (cross-device). Spotify.ahk is one way to change it. There's also a local way to volume change it with AHK, I'm unfamiliar though. Google could probably tell you that one.

If you wanted to just use this one script, setting the internal volume to max will do you just fine.
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Re: Change the volume of specific application

30 Jul 2021, 21:47

Masonjar13 wrote:
30 Jul 2021, 21:37

Yep, in the example from my second post, you'll see I use the exe name rather than the name of the window...so using the window class and/or exe is often the best option... Spotify.ahk is one way to change it. There's also a local way to volume change it with AHK, I'm unfamiliar though. Google could probably tell you that one.

If you wanted to just use this one script, setting the internal volume to max will do you just fine.
So could Spotify.exe work in this case? Even the ahk class is iffy: Chrome_WidgetWin_0; an actual chrome browser has Chrome_WidgetWin_1 as the class, so it doesn't fill me with much confidence...

EDIT: It does indeed! Wow, nice. Only issue is that you need to have the master at full and turn everything down...hmm, an easy way to blow yourself out the chair!! :lol:

Code: Select all


!a::setWindowVol("ahk_exe Spotify.exe","+15")
!s::setWindowVol("ahk_exe Spotify.exe","-15")

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Re: Change the volume of specific application

31 Jul 2021, 04:25

i don't think you understand.. the volume in mixer does work only when Spotify is in focus. when i focus mixer it won't work. so anytime i want to lower the volume of spotify i need to focus it. i want to use the script without having to do that. i can't use Spotify.exe as the WinTitle so i'm using Spotify as WinTitle.

Photo i've added shows what happenes when i use Spotify.exe as WinTitle.
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Re: Change the volume of specific application

31 Jul 2021, 13:58

Looks like a syntax error. Use the Spotify example submeg just posted, works fine.
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Re: Change the volume of specific application

31 Jul 2021, 17:33

Masonjar13 wrote:
31 Jul 2021, 13:58
Looks like a syntax error. Use the Spotify example submeg just posted, works fine.
Hey @fyvmlss, it works for me even if spotify isn't the active program.

I used the version where all of the information in a single location rather than using an #Include, but I will use the include version long term.
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Re: Change the volume of specific application

26 Dec 2021, 01:50

Code: Select all

#include <setWindowVol>
MsgBox, % VA_GetMasterVolume()     ; It is a library test and it is successful.
return
z::SetWindowVol("ahk_exe brave.exe", "-5")
This doesn't work for me. Even if I open youtube video. Even z::SetWindowVol(, "-5") doesn't work when Brave is an active window with youtube is being active tab.

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z::SetWindowVol("ahk_exe AIMP.exe", "-5")
This does work perfectly.

Code: Select all

z::SetWindowVol("ahk_exe AIMP.exe", 50)
This doesn't work! (Master volume is 100). It sets AIMP volume to 0 instead of 50.

Code: Select all

z::SetWindowVol("ahk_exe AIMP.exe", 100)
This does work.

Code: Select all

z::SetWindowVol("ahk_exe AIMP.exe", 99)
Doesn't work, sets AIMP volume to 0.
Everything above was tested with Run as admitistrator mode too.
Win10 x64, ahk v1.1.33.10.
Any ideas? :?
Have found any drawback in my code or approach? Please, point it out. /The moderator ordered to remove the rest of the signature, I had obeyed.
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Re: Change the volume of specific application

28 Feb 2022, 03:21

amateur+ wrote:doesn't work when Brave is an active window with youtube is being active tab
I've done a fair amount of testing with this. Quick summary...it works with some apps, but not others. When it works, it is perfect...changes the volume only in that app...does not affect the Master volume.

It works great in Firefox...doesn't matter what the active tab is. I tried numerous Chromium-based browsers...Brave, Chrome, Edge, Opera, Vivaldi...does not work in any of them. It works in Amazon Music, Total Recorder, and VLC (although Amazon Music resets the volume to 50 when it is auto-playing the next track). It does not work in Skype. It does not work in the W10 built-in apps that I tried...Groove Music, Movies & TV, Voice Recorder. Regards, Joe
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Re: Change the volume of specific application

28 Feb 2022, 05:07

Masonjar13 wrote:SetWindowVol
SetWindowVol has this in it:

Code: Select all

objRelease(volume)
As far as I can tell, volume is not an object...IsObject(volume) returns False. So, does objRelease(volume) do anything there? Thanks, Joe
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Re: Change the volume of specific application

28 Feb 2022, 08:21

ObjRelease() doesn't work with AHK objects, but with pointers to raw COM interfaces. In this case volume is the poiner to the ISimpleAudioVolume interface.
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Re: Change the volume of specific application

28 Feb 2022, 08:59

Ah, got it, teadrinker...thanks for explaining that. Cheers, Joe

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