VoiceMeeter-interface/VB.ahk

#NoEnv
#SingleInstance force
#MaxHotkeysPerInterval 99000000
#HotkeyInterval 99000000
#KeyHistory 0
#UseHook
#Persistent
ListLines Off
SendMode Input ; Recommended for new scripts due to its superior speed and reliability.
SetTitleMatchMode RegEx
StringCaseSense Off 
SetWorkingDir %A_ScriptDir%  ; Ensures a consistent starting directory.

OnExit("cleanup_before_exit")
SetFormat, Float, 0.3
global VMR_FUNCTIONS := {}
global VMR_DLL_DRIVE := "C:"
global VMR_DLL_DIRPATH := "Program Files (x86)\VB\Voicemeeter"
global VMR_DLL_FILENAME_32 := "VoicemeeterRemote.dll"
global VMR_DLL_FILENAME_64 := "VoicemeeterRemote64.dll"
global VMR_DLL_FULL_PATH := VMR_DLL_DRIVE . "\" . VMR_DLL_DIRPATH . "\"
Sleep, 500
if (A_Is64bitOS) {
	VMR_DLL_FULL_PATH .= VMR_DLL_FILENAME_64
} else {
	VMR_DLL_FULL_PATH .= VMR_DLL_FILENAME_32
}

; == START OF EXECUTION ==
; ========================

; Load the VoicemeeterRemote DLL:
; This returns a module handle
global VMR_MODULE := DllCall("LoadLibrary", "Str", VMR_DLL_FULL_PATH, "Ptr")
if (ErrorLevel || VMR_MODULE == 0)
	die("Attempt to load VoiceMeeter Remote DLL failed.")

; Populate VMR_FUNCTIONS
add_vmr_function("Login")
add_vmr_function("Logout")
add_vmr_function("RunVoicemeeter")
add_vmr_function("SetParameterFloat")
add_vmr_function("GetParameterFloat")
add_vmr_function("IsParametersDirty")

; "Login" to Voicemeeter, by calling the function in the DLL named 'VBVMR_Login()'...
login_result := DllCall(VMR_FUNCTIONS["Login"], "Int")
if (ErrorLevel || login_result < 0)
	die("VoiceMeeter Remote login failed.")

; If the login returns 1, that apparently means that Voicemeeter isn't running,
; so we start it; pass 1 to run Voicemeeter, or 2 for Voicemeeter Banana:
if (login_result == 1) {
	DllCall(VMR_FUNCTIONS["RunVoicemeeter"], "Int", 2, "Int")
	if (ErrorLevel)
	die("Attempt to run VoiceMeeter failed.")
	Sleep 2000
}

; == MIDI ==
; ==========
#Include, MIDI\MidiStart.ahk
#Include, MIDI\Midi_In_and_GuiMonitor.ahk	; this file contains: the function to parse midi message into parts we can work with and a midi monitor.
#Include, MIDI\MidiRules.ahk			; this file contains: Rules for manipulating midi input then sending modified midi output.
#Include, MIDI\Midi_under_the_hood.ahk    ; this file contains: (DO NOT EDIT THIS FILE) all the dialogs to set up midi ports and midi message handling.

midiCCin:
	cc := byte1		; The Control Channel
	val := byte2	; The value (0-127 for faders, 0 or 1 for buttons (that part is set with the software))

	Switch chan
	{
		Case 1: ; The first fader: Work Laptop Out
			Switch cc
				{
				Case 0:
					Lvl := fader_to_fader(val)
					adjustVolLvl("Strip[0].Gain", Lvl)
					Return
				Case 1:
					Lvl := dial_to_pan(val)
					adjustVolLvl("Strip[0].Pan_x", Lvl)
				Case 2:
					adjustToggle("Strip[0].Solo", val)
					Return
				Case 3:
					adjustToggle("Strip[0].Mute", val)
					Return
				Case 4:
					adjustToggle("Strip[0].B2", val)
					Return
				Default:
					Return
				}
		Case 2: ; The second fader: Work Laptop In
			Switch cc
				{
				Case 0:
					Lvl := fader_to_fader(val)
					adjustVolLvl("Bus[2].Gain", Lvl)
					Return
				Case 3:
					adjustToggle("Bus[2].Mute", val)
					Return
				Default:
					Return
				}
		Case 3: ; The third fader: Desktop Audio
			Switch cc
				{
				Case 0:
					Lvl := fader_to_fader(val)
					adjustVolLvl("Strip[3].Gain", Lvl)
					Return
				Case 1:
					Lvl := dial_to_pan(val)
					adjustVolLvl("Strip[3].Pan_x", Lvl)
				Case 2:
					adjustToggle("Strip[3].Solo", val)
					Return
				Case 3:
					adjustToggle("Strip[3].Mute", val)
					Return
				Case 4:
					adjustToggle("Strip[3].B2", val)
					Return
				Default:
					Return
				}
		Case 4: ; The third fader: Comms In
			Switch cc
				{
				Case 0:
					Lvl := fader_to_fader(val)
					adjustVolLvl("Bus[3].Gain", Lvl)
					Return
				Case 3:
					adjustToggle("Bus[3].Mute", val)
					Return
				Default:
					Return
				}
		Case 5: ; The fifth fader: Comms Out
			Switch cc
				{
				Case 0:
					Lvl := fader_to_fader(val)
					adjustVolLvl("Strip[4].Gain", Lvl)
					Return
				Case 1:
					Lvl := dial_to_pan(val)
					adjustVolLvl("Strip[4].Pan_x", Lvl)
				Case 2:
					adjustToggle("Strip[4].Solo", val)
					Return
				Case 3:
					adjustToggle("Strip[4].Mute", val)
					Return
				Case 4:
					adjustToggle("Strip[4].B2", val)
					Return
				Default:
					Return
				}
		Case 6: ; The sixth fader: Speakers
			Switch cc
				{
				Case 0:
					Lvl := fader_to_fader(val)
					adjustVolLvl("Bus[0].Gain", Lvl)
					Return
				Case 3:
					adjustToggle("Bus[0].Mute", val)
					Return
				Default:
					Return
				}
		Case 7: ; The seventh fader: Mic
			Switch cc
				{
				Case 0:
					Lvl := fader_to_fader(val)
					adjustVolLvl("Bus[1].Gain", Lvl)
					Return
				Case 3:
					adjustToggle("Bus[1].Mute", val)
					Return
				Default:
					Return
				}
		Case 8:	; The eighth fader: Music
			Switch cc
				{
				Case 0:
					Lvl := fader_to_fader(val)
					adjustVolLvl("Strip[2].Gain", Lvl)
					Return
				Case 1:
					Lvl := dial_to_pan(val)
					adjustVolLvl("Strip[2].Pan_x", Lvl)
				Case 2:
					adjustToggle("Strip[2].Solo", val)
					Return
				Case 3:
					adjustToggle("Strip[2].Mute", val)
					Return
				Case 4:
					adjustToggle("Strip[2].B1", val)
					adjustToggle("Strip[2].B2", val)
					Return
				Default:
					Return
				}
		Case 10:	; VoiceMeeter recorder controls
			Switch cc
			{
				Case 1: ; Media Previous
					if (val)
					{
						Send, {Media_Prev}
					}
					Return
				Case 2:	; Media Next
					if (val)
					{
						Send, {Media_Next}
					}
					Return
				Case 3:	; Media Play/Pause
					Send, {Media_Play_Pause}
					Return
				Case 7:	; Rewind
					if (val)
					{
						adjustToggle("Recorder.REW", true)
					} else {
						adjustToggle("Recorder.Play", true)
					}					
					Return
				Case 8:	; Fast Forward
					if (val)
					{
						adjustToggle("Recorder.FF", true)
					} else {
						adjustToggle("Recorder.Play", true)
					}					
					Return
				Case 9:
					adjustToggle("Recorder.Stop", val)
					Return
				Case 10:
					adjustToggle("Recorder.Play", val)
					Return
				Case 11:
					adjustToggle("Recorder.Record", val)
					Return				
				Default:
					Gosub, SendCC
					Return
			}
		Default:
			Gosub, SendCC
			Return
	}
Return

fader_to_fader(val) ; Translates MIDI fader values to the VoiceMeeter software faders
{
	; The upper limit for faders in VM is 12.0
	; The lower limit for the faders in VM that I would like is -40.0, how low it should go when the physical fader is all the way at the bottom
	nval := Round(((val / 127) * 72) - 60)
	Return nval
}
; 	Formula: ((value / max value) * total range) - negative part of range
dial_to_pan(val)
{
	nval := Round((val / 127) - 0.5, 2)
	Return nval
}
; == HOTKEYS ==
; =============

Volume_Mute::
	b0M := Round(readParam("Bus[0].Mute"))	; Speakers
	b1M := Round(readParam("Bus[1].Mute"))	; Headphones
	b2M := Round(readParam("Bus[2].Mute"))	; Work Laptop Send
	b3M := Round(readParam("Bus[3].Mute"))	; Comms Send
	b4M := Round(readParam("Bus[4].Mute"))	; Recording
	cM := b0M + b1M + b2M + b3M + b4M
	
	if (cM = "5")
	{	; Unmute the ones that were unmuted before
		adjustToggle("Bus[0].Mute", b0Ms)	; Speakers
		adjustToggle("Bus[1].Mute", b1Ms)	; Headphones
		adjustToggle("Bus[2].Mute", b2Ms)	; Work Laptop Send
		adjustToggle("Bus[3].Mute", b3Ms)	; Comms Send
		adjustToggle("Bus[4].Mute", b4Ms)	; Recording
	} else {
		adjustToggle("Bus[0].Mute", True)	; Speakers
		adjustToggle("Bus[1].Mute", True)	; Headphones
		adjustToggle("Bus[2].Mute", True)	; Work Laptop Send
		adjustToggle("Bus[3].Mute", True)	; Comms Send
		adjustToggle("Bus[4].Mute", True)	; Recording
		b0Ms := b0M
		b1Ms := b1M
		b2Ms := b2M
		b3Ms := b3M
		b4Ms := b4M
	}
Return

Volume_Up::
	cM := Round(readParam("Strip[3].Mute"))
	
	if !(cM)
	{
		cLvl := readParam("Strip[3].Gain")
		if (cLvl != "")
		{
			cLvl += 1
			adjustVolLvl("Strip[3].Gain", cLvl)
		}
	}
Return

Volume_Down::
	cM := Round(readParam("Strip[3].Mute"))
	
	if !(cM)
	{
		cLvl := readParam("Strip[3].Gain")
		if (cLvl != "")
		{
			cLvl -= 1
			adjustVolLvl("Strip[3].Gain", cLvl)
		}
	}
Return

; == Functions ==
; ===============
readParam(loc){
	Loop
	{
		pDirty := DLLCall(VMR_FUNCTIONS["IsParametersDirty"]) ;Check if parameters have changed. 
		if (pDirty==0) ;0 = no new paramters.
			break
		else if (pDirty<0) ;-1 = error, -2 = no server
			return ""
		else ;1 = New parameters -> update your display. (this only applies if YOU have a display, couldn't find any code to update VM display which can get off sometimes)
			if A_Index > 200
				return ""
			sleep, 20
	}
	tParamVal := 0.0
	NumPut(0.0, tParamVal, 0, "Float")
	statusLvl := DllCall(VMR_FUNCTIONS["GetParameterFloat"], "AStr", loc, "Ptr", &tParamVal, "Int")
	tParamVal := NumGet(tParamVal, 0, "Float")
	if (statusLvl < 0)
		return ""
	else
		return tParamVal
}

adjustVolLvl(loc, tVol) {
	if (tVol > 12.0)
		tVol := 12.0
	else if (tVol < -60.0) 
		tVol := -60.0
	DllCall(VMR_FUNCTIONS["SetParameterFloat"], "AStr", loc, "Float", tVol, "Int")
}

adjustToggle(func, togg) {
	DllCall(VMR_FUNCTIONS["SetParameterFloat"], "AStr", func, "Float", togg, "Int")
}

adjustString(func, str) {
	DllCall(VMR_FUNCTIONS["SetParameterFloat"], "AStr", func, "Float", str, "Str")
}



add_vmr_function(func_name) {
	VMR_FUNCTIONS[func_name] := DllCall("GetProcAddress", "Ptr", VMR_MODULE, "AStr", "VBVMR_" . func_name, "Ptr")
	if (ErrorLevel || VMR_FUNCTIONS[func_name] == 0)
		die("Failed to register VMR function " . func_name . ".")
}

cleanup_before_exit(exit_reason, exit_code) {
	DllCall(VMR_FUNCTIONS["Logout"], "Int")
	; OnExit functions must return 0 to allow the app to exit.
	return 0
}

die(die_string:="UNSPECIFIED FATAL ERROR.", exit_status:=254) {
	MsgBox 16, FATAL ERROR, %die_string%
	ExitApp exit_status
}