mute := 0
!Space::
   mute := !mute

processName := "chrome.exe"

PIDs := EnumProcessesByName(processName)
mute := 0
for k, v in PIDs
   SetAppVolume(v, volume := 100)
Return

!Space::
   mute := !mute
   for k, v in PIDs
      SetAppVolume(v, mute ? "mute" : "unmute")
   Return

!Home::
!End::
   volume += A_ThisHotkey = "!End" ? -3 : 3
   volume := volume < 0 ? 0 : volume > 100 ? 100 : volume
   for k, v in PIDs
      SetAppVolume(v, volume)
Return

EnumProcessesByName(searchName, regEx := false) {
   if !DllCall("Wtsapi32\WTSEnumerateProcesses", "Ptr", 0, "UInt", 0, "UInt", 1, "PtrP", pProcessInfo, "PtrP", count)
      throw Exception("WTSEnumerateProcesses failed. A_LastError: " . A_LastError)
   
   addr := pProcessInfo, PIDs := []
   Loop % count  {
      procName := StrGet( NumGet(addr + 8) )
      if ( regEx && RegExMatch(procName, searchName) ) || (procName = searchName)
         PID := NumGet(addr + 4, "UInt"), PIDs.Push(PID)
      addr += 8 + A_PtrSize*2
   }
   DllCall("Wtsapi32\WTSFreeMemory", "Ptr", pProcessInfo)
   Return PIDs
}

SetAppVolume(PID, volume)    ; WIN_V+
{
   static MMDeviceEnumerator        := "{BCDE0395-E52F-467C-8E3D-C4579291692E}"
        , IID_IMMDeviceEnumerator   := "{A95664D2-9614-4F35-A746-DE8DB63617E6}"
        , IID_IAudioSessionManager2 := "{77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F}"
        , IID_IAudioSessionControl2 := "{BFB7FF88-7239-4FC9-8FA2-07C950BE9C6D}"
        , IID_ISimpleAudioVolume    := "{87CE5498-68D6-44E5-9215-6DA47EF883D8}"
        , eRender := 0, eMultimedia := 1, CLSCTX_ALL := 0x17
   if (volume + 0 != "")
      volume := volume > 100 ? 100 : volume < 0 ? 0 : volume

   IMMDeviceEnumerator := ComObjCreate(MMDeviceEnumerator, IID_IMMDeviceEnumerator)
   ; IMMDeviceEnumerator::GetDefaultAudioEndpoint
   DllCall(NumGet(NumGet(IMMDeviceEnumerator+0)+4*A_PtrSize), "Ptr", IMMDeviceEnumerator, "UInt", eRender, "UInt", eMultimedia, "PtrP", IMMDevice)
   ObjRelease(IMMDeviceEnumerator)

   VarSetCapacity(GUID, 16)
   DllCall("Ole32.dll\CLSIDFromString", "Str", IID_IAudioSessionManager2, "Ptr", &GUID)
   ; IMMDevice::Activate
   DllCall(NumGet(NumGet(IMMDevice+0)+3*A_PtrSize), "Ptr", IMMDevice, "Ptr", &GUID, "UInt", CLSCTX_ALL, "Ptr", 0, "PtrP", IAudioSessionManager2)
   ObjRelease(IMMDevice)

   ; IAudioSessionManager2::GetSessionEnumerator
   DllCall(NumGet(NumGet(IAudioSessionManager2+0)+5*A_PtrSize), "Ptr", IAudioSessionManager2, "PtrP", IAudioSessionEnumerator)
   ObjRelease(IAudioSessionManager2)

   ; IAudioSessionEnumerator::GetCount
   DllCall(NumGet(NumGet(IAudioSessionEnumerator+0)+3*A_PtrSize), "Ptr", IAudioSessionEnumerator, "UIntP", SessionCount)
   Loop % SessionCount
   {
      ; IAudioSessionEnumerator::GetSession
      DllCall(NumGet(NumGet(IAudioSessionEnumerator+0)+4*A_PtrSize), "Ptr", IAudioSessionEnumerator, "Int", A_Index-1, "PtrP", IAudioSessionControl)
      IAudioSessionControl2 := ComObjQuery(IAudioSessionControl, IID_IAudioSessionControl2)
      ObjRelease(IAudioSessionControl)
      
      ; IAudioSessionControl2::GetProcessId
      DllCall(NumGet(NumGet(IAudioSessionControl2+0)+14*A_PtrSize), "Ptr", IAudioSessionControl2, "UIntP", ProcessId)
      If (PID == ProcessId)
      {
         ISimpleAudioVolume := ComObjQuery(IAudioSessionControl2, IID_ISimpleAudioVolume)
         if (volume + 0 != "")
            ; ISimpleAudioVolume::SetMasterVolume
            DllCall(NumGet(NumGet(ISimpleAudioVolume+0)+3*A_PtrSize), "Ptr", ISimpleAudioVolume, "Float", volume/100.0, "Ptr", 0)
         else
            ; ISimpleAudioVolume::SetMute
            DllCall(NumGet(NumGet(ISimpleAudioVolume+0)+5*A_PtrSize), "Ptr", ISimpleAudioVolume, "UInt", volume = "mute" ? true : false, "Ptr", 0)
         ObjRelease(ISimpleAudioVolume)
      }
      ObjRelease(IAudioSessionControl2)
   }
   ObjRelease(IAudioSessionEnumerator)
}

run, D:\ahk\SoundVolumeView.exe /Switch BlueStacks