forked from dannywarren/AutoHotkey-Midi
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Midi2.ahk
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Midi2.ahk
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;
; Midi2.ahk for AutoHotkey v2
; Add MIDI input event handling to your AutoHotkey scripts
; https://github.com/hetima/AutoHotkey-Midi
;
; Based on Midi.ahk by Danny Warren
; https://github.com/dannywarren/AutoHotkey-Midi
;
Persistent
; Midi class interface
Class AHKMidi
{
; delegate
static _delegate := False
delegate
{
get => AHKMidi._delegate
set => AHKMidi._delegate := value
}
; Enable or disable label event handling
static midiLabelCallbacks := True
; Enable specific process callback like explorer_exe_MidiNoteOnC(event){}
static _specificProcessCallback := False
specificProcessCallback
{
get => AHKMidi._specificProcessCallback
set => AHKMidi._specificProcessCallback := value
}
; Enable or disable path through event that not handled to output device
static _midiEventPassThrough := False
midiEventPassThrough
{
get => AHKMidi._midiEventPassThrough
set => AHKMidi._midiEventPassThrough := value
}
; use SetPassThroughDeviceName(deviceName)
; if not set, pass trough to all opened midi out devices
static passThroughDeviceHandle := False
_settingFilePath := False
settingFilePath
{
get => this._settingFilePath
set {
this._settingFilePath := value
this.LoadIOSetting(this._settingFilePath)
}
}
; Defines the string size of midi devices returned by windows (see mmsystem.h)
static MIDI_DEVICE_NAME_LENGTH := 32
; Defines the size of a midi input struct MIDIINCAPS (see mmsystem.h)
static MIDI_DEVICE_IN_STRUCT_LENGTH := 44
; Defines the size of a midi input struct MIDIINCAPS (see mmsystem.h)
static MIDI_DEVICE_OUT_STRUCT_LENGTH := 50
; Defines for midi event callbacks (see mmsystem.h)
static MIDI_CALLBACK_WINDOW := 0x10000
static MIDI_CALLBACK_TASK := 0x20000
static MIDI_CALLBACK_FUNCTION := 0x30000
; Defines for midi event types (see mmsystem.h)
static MIDI_OPEN := 0x3C1
static MIDI_CLOSE := 0x3C2
static MIDI_DATA := 0x3C3
static MIDI_LONGDATA := 0x3C4
static MIDI_ERROR := 0x3C5
static MIDI_LONGERROR := 0x3C6
static MIDI_MOREDATA := 0x3CC
; Defines the size of the standard chromatic scale
static MIDI_NOTE_SIZE := 12
; Defines the midi notes
static MIDI_NOTES := [ "C", "Cs", "D", "Ds", "E", "F", "Fs", "G", "Gs", "A", "As", "B" ]
; Defines the octaves for midi notes
static MIDI_OCTAVES := [ -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8 ]
; This is where we will keep the most recent midi in event data so that it can
; be accessed via the Midi object, since we cannot store it in the object due
; to how events work
; We will store the last event by the handle used to open the midi device, so
; at least we won't clobber midi events from other devices if the user wants
; to fetch them specifically
static __midiInEvent := {}
;;;;static __midiInHandleEvent := {}
; List of all midi input/output devices on the system
static __midiInDevices := {}
static __midiOutDevices := {}
; Default label prefix
static midiLabelPrefix := "Midi"
; Holds a refence to the system wide midi dll, so we don't have to open it
; multiple times
static __midiDll := 0
; Always use gui mode when using the midi library, since we need something to
; attach midi events to
; Gui, +LastFound
; Gui("+LastFound") ?
; The window to attach the midi callback listener to, which will default to
; our gui window
static __midiInCallbackWindow := Gui()
; List of midi input/output devices to listen to messages for, we do this globally
; since only one instance of the class can listen to a device anyhow
static __midiInOpenHandles := Map()
static __midiOutOpenHandles := Map()
; Count of open handles, since ahk doesn't have a method to actually count the
; members of an array (it instead just returns the highest index, which isn't
; the same thing)
static __midiInOpenHandlesCount := 0
static __midiOutOpenHandlesCount := 0
; Enable or disable lazy midi in event debugging via tooltips
static midiEventTooltips := False
; Instance creation
__New()
{
this._settingFilePath := False
; global midiDelegate
this.__MidInDevicesMenu := Menu()
this.__MidOutDevicesMenu := Menu()
; Initialize midi environment
this.LoadMidi()
this.QueryMidiInDevices()
this.QueryMidiOutDevices()
this.SetupDeviceMenus()
}
; Instance destruction
__Delete()
{
; Close all midi in/out devices and then unload the midi environment
this.CloseMidiIns()
this.CloseMidiOuts()
this.UnloadMidi()
}
; Load midi dlls
LoadMidi()
{
If ( ! AHKMidi.__midiDll ){
AHKMidi.__midiDll := DllCall( "LoadLibrary", "Str", "winmm.dll", "Ptr" )
If ( ! AHKMidi.__midiDll )
{
MsgBox("Missing system midi library winmm.dll")
ExitApp
}
}
}
; Unload midi dlls
UnloadMidi()
{
If ( AHKMidi.__midiDll )
{
DllCall( "FreeLibrary", "Ptr", AHKMidi.__midiDll )
}
}
; Open midi in device and start listening
OpenMidiIn( midiInDeviceId )
{
this.__OpenMidiIn( midiInDeviceId )
}
; Open midi in device and start listening
OpenMidiInByName( midiInDeviceName )
{
For key, value In AHKMidi.__midiInDevices{
if (value.deviceName==midiInDeviceName){
this.__OpenMidiIn( key )
return key
}
}
return -1
}
; Close midi in device and stop listening
CloseMidiIn( midiInDeviceId )
{
this.__CLoseMidiIn( midiInDeviceId )
}
; Close all currently open midi in devices
CloseMidiIns()
{
If ( ! AHKMidi.__midiInOpenHandlesCount )
{
Return
}
; We have to store the handles we are going to close in advance, because
; autohotkey gets confused if we are removing things from an array while
; iterative over it
deviceIdsToClose := {}
; Iterate once to get a list of ids to close
For midiInDeviceId In AHKMidi.__midiInOpenHandles
{
deviceIdsToClose.Push( midiInDeviceId )
}
; Iterate again to actually close them
For index, midiInDeviceId In deviceIdsToClose
{
this.CloseMidiIn( midiInDeviceId )
}
}
; Query the system for a list of active midi input devices
QueryMidiInDevices()
{
midiInDevices := Map()
deviceCount := DllCall( "winmm.dll\midiOutGetNumDevs" ) - 1
Loop deviceCount
{
midiInDevice := {}
deviceNumber := A_Index - 1
midiInStruct := Buffer( AHKMidi.MIDI_DEVICE_IN_STRUCT_LENGTH, 0 )
midiQueryResult := DllCall( "winmm.dll\midiInGetDevCapsA", "UINT", deviceNumber, "PTR", midiInStruct, "UINT", AHKMidi.MIDI_DEVICE_IN_STRUCT_LENGTH )
; Error handling
If ( midiQueryResult )
{
MsgBox("Failed to query midi devices")
Return
}
manufacturerId := NumGet( midiInStruct, 0, "USHORT" )
productId := NumGet( midiInStruct, 2, "USHORT" )
driverVersion := NumGet( midiInStruct, 4, "UINT" )
deviceName := StrGet( midiInStruct.Ptr + 8, AHKMidi.MIDI_DEVICE_NAME_LENGTH, "CP0" )
; support := NumGet( midiInStruct, 4, "UINT" )
midiInDevice.direction := "IN"
midiInDevice.deviceNumber := deviceNumber
midiInDevice.deviceName := deviceName
midiInDevice.productID := productID
midiInDevice.manufacturerID := manufacturerID
midiInDevice.driverVersion := ( driverVersion & 0xF0 ) . "." . ( driverVersion & 0x0F )
__MidiEventDebug( midiInDevice )
midiInDevices[deviceNumber] := midiInDevice
}
AHKMidi.__midiInDevices := midiInDevices
}
; Open midi in device and start listening
OpenMidiOut( midiOutDeviceId )
{
this.__OpenMidiOut( midiOutDeviceId )
}
; Open midi out device and start listening
OpenMidiOutByName( midiOutDeviceName )
{
For key, value In AHKMidi.__midiOutDevices{
if (value.deviceName==midiOutDeviceName){
this.__OpenMidiOut( key )
return key
}
}
return -1
}
; Close midi in device and stop listening
CloseMidiOut( midiOutDeviceId )
{
this.__CLoseMidiOut( midiOutDeviceId )
}
; Close all currently open midi in devices
CloseMidiOuts()
{
If ( ! AHKMidi.__midiOutOpenHandlesCount )
{
Return
}
; We have to store the handles we are going to close in advance, because
; autohotkey gets confused if we are removing things from an array while
; iterative over it
deviceIdsToClose := {}
; Iterate once to get a list of ids to close
For midiOutDeviceId In AHKMidi.__midiOutOpenHandles
{
deviceIdsToClose.Push( midiOutDeviceId )
}
; Iterate again to actually close them
For index, midiOutDeviceId In deviceIdsToClose
{
this.CloseMidiOut( midiOutDeviceId )
}
}
; Query the system for a list of active midi Output devices
QueryMidiOutDevices()
{
midiOutDevices := Map()
deviceCount := DllCall( "winmm.dll\midiOutGetNumDevs" )
Loop deviceCount
{
midiOutDevice := {}
deviceNumber := A_Index - 1
midiOutStruct := Buffer(AHKMidi.MIDI_DEVICE_OUT_STRUCT_LENGTH, 0)
midiQueryResult := DllCall( "winmm.dll\midiOutGetDevCapsA", "UINT", deviceNumber, "PTR", midiOutStruct, "UINT", AHKMidi.MIDI_DEVICE_OUT_STRUCT_LENGTH )
; Error handling
If ( midiQueryResult )
{
MsgBox("Failed to query midi devices")
Return
}
manufacturerId := NumGet( midiOutStruct, 0, "USHORT" )
productId := NumGet( midiOutStruct, 2, "USHORT" )
driverVersion := NumGet( midiOutStruct, 4, "UINT" )
deviceName := StrGet( midiOutStruct.Ptr + 8, AHKMidi.MIDI_DEVICE_NAME_LENGTH, "CP0" )
; technology := NumGet( midiOutStruct, AHKMidi.MIDI_DEVICE_NAME_LENGTH + 8 + 0, "USHORT" )
; voices := NumGet( midiOutStruct, AHKMidi.MIDI_DEVICE_NAME_LENGTH + 8 + 2, "USHORT" )
; notes := NumGet( midiOutStruct, AHKMidi.MIDI_DEVICE_NAME_LENGTH + 8 + 4, "USHORT" )
; channelmask := NumGet( midiOutStruct, AHKMidi.MIDI_DEVICE_NAME_LENGTH + 8 + 8, "USHORT" ) ; +6?
; support := NumGet( midiOutStruct, AHKMidi.MIDI_DEVICE_NAME_LENGTH + 8 + 10, "USHORT" ) ; +8?
midiOutDevice.direction := "OUT"
midiOutDevice.deviceNumber := deviceNumber
midiOutDevice.deviceName := deviceName
midiOutDevice.productID := productID
midiOutDevice.manufacturerID := manufacturerID
midiOutDevice.driverVersion := ( driverVersion & 0xF0 ) . "." . ( driverVersion & 0x0F )
__MidiEventDebug( midiOutDevice )
midiOutDevices[deviceNumber] := midiOutDevice
}
AHKMidi.__midiOutDevices := midiOutDevices
}
; Set up device selection menus
SetupDeviceMenus()
{
__SelectMidiInDevice(ItemName, ItemPos, MyMenu){
midiInDeviceId := ItemPos-1
if ( AHKMidi.__midiInOpenHandles.Get(midiInDeviceId, 0) > 0 )
{
this.__CloseMidiIn( midiInDeviceId )
}
else
{
this.__OpenMidiIn( midiInDeviceId )
}
this.SaveIOSetting(this._settingFilePath)
}
__SelectMidiOutDevice(ItemName, ItemPos, MyMenu){
midiOutDeviceId := ItemPos-1
if ( AHKMidi.__midiOutOpenHandles.Get(midiOutDeviceId, 0) > 0 )
{
this.__CloseMidiOut( midiOutDeviceId )
}
else
{
this.__OpenMidiOut( midiOutDeviceId )
}
this.SaveIOSetting(this._settingFilePath)
}
haveInDevices := false
For key, value In AHKMidi.__midiInDevices
{
this.__MidInDevicesMenu.Add(value.deviceName, __SelectMidiInDevice)
haveInDevices := true
}
haveOutDevices := false
For key, value In AHKMidi.__midiOutDevices
{
this.__MidOutDevicesMenu.Add(value.deviceName, __SelectMidiOutDevice)
haveOutDevices := true
}
;A_TrayMenu.Add()
; Menu, Tray, Add
A_TrayMenu.Add()
if (haveInDevices==true) {
A_TrayMenu.Add("MIDI Input Devices", this.__MidInDevicesMenu)
}
if (haveOutDevices==true) {
A_TrayMenu.Add("MIDI Output Devices", this.__MidOutDevicesMenu)
}
}
; Returns the last midi in event values
MidiIn()
{
Return AHKMidi.__MidiInEvent
}
MidiOutRawData(rawData, deviceHandle := False)
{
; handle
If (deviceHandle)
{
result := DllCall("winmm.dll\midiOutShortMsg", "UInt", deviceHandle, "UInt", rawData, "UInt")
if (result)
{
msgbox("There was an error sending the midi event")
}
}else{
For midiOutDeviceId In AHKMidi.__midiOutOpenHandles
{
;Call api function to send midi event
result := DllCall("winmm.dll\midiOutShortMsg"
, "UInt", AHKMidi.__midiOutOpenHandles[midiOutDeviceId]
, "UInt", rawData
, "UInt")
if (result)
{
msgbox("There was an error sending the midi event")
}
}
}
}
MidiOut(EventType, Channel, Param1, Param2, deviceHandle := False)
{
;handle is handle to midi output device returned by midiOutOpen function
;EventType and Channel are combined to create the MidiStatus byte.
;MidiStatus message table can be found at http://www.harmony-central.com/MIDI/Doc/table1.html
;Possible values for EventTypes are NoteOn (N1), NoteOff (N0), CC, PolyAT (PA), ChanAT (AT), PChange (PC), Wheel (W) - vals in () are optional shorthand
;SysEx not supported by the midiOutShortMsg call
;Param3 should be 0 for PChange, ChanAT, or Wheel. When sending Wheel events, put the entire Wheel value
;in Param2 - the function will split it into it's two bytes
;returns 0 if successful, -1 if not.
;Calc MidiStatus byte
If (EventType = "NoteOn" OR EventType = "N1")
MidiStatus := 143 + Channel
Else if (EventType = "NoteOff" OR EventType = "N0")
MidiStatus := 127 + Channel
Else if (EventType = "ControlChange" OR EventType = "CC")
MidiStatus := 175 + Channel
Else if (EventType = "PolyAT" OR EventType = "PA")
MidiStatus := 159 + Channel
Else if (EventType = "ChanAT" OR EventType = "AT")
MidiStatus := 207 + Channel
Else if (EventType = "ProgramChange" OR EventType = "PC")
MidiStatus := 191 + Channel
Else if (EventType = "PitchWheel" OR EventType = "PW")
{
MidiStatus := 223 + Channel
Param2 := Param1 >> 8 ;MSB of wheel value
Param1 := Param1 & 0x00FF ;strip MSB, leave LSB only
}
else
{
Return
}
;Midi message Dword is made up of Midi Status in lowest byte, then 1st parameter, then 2nd parameter. Highest byte is always 0
dwMidi := MidiStatus + (Param1 << 8) + (Param2 << 16)
this.MidiOutRawData(dwMidi, deviceHandle)
}
DeviceHandleForName(deviceName)
{
If (deviceName != "")
{
For key, value In AHKMidi.__midiOutDevices{
if (value.deviceName == deviceName){
return AHKMidi.__midiOutOpenHandles[value.deviceNumber]
}
}
}
return False
}
MidiOutToDeviceId(EventType, Channel, Param1, Param2, deviceId)
{
deviceHandle := AHKMidi.__midiOutOpenHandles[deviceId]
if(deviceHandle){
this.MidiOut(EventType, Channel, Param1, Param2, deviceHandle)
}else{
msgbox("device " deviceId " not found or not open")
}
}
MidiOutToDeviceName(EventType, Channel, Param1, Param2, deviceName)
{
deviceHandle := this.DeviceHandleForName(deviceName)
if(deviceHandle){
this.MidiOut(EventType, Channel, Param1, Param2, deviceHandle)
}else{
msgbox(deviceName " not found or not open")
}
}
MidiOutRawDataToDeviceId(rawData, deviceId)
{
deviceHandle := AHKMidi.__midiOutOpenHandles[deviceId]
if(deviceHandle){
this.MidiOutRawData(rawData, deviceHandle)
}else{
msgbox("device " deviceId " not found or not open")
}
}
MidiOutRawDataToDeviceName(rawData, deviceName)
{
deviceHandle := this.DeviceHandleForName(deviceName)
if(deviceHandle){
this.MidiOutRawData(rawData, deviceHandle)
}else{
msgbox(deviceName " not found or not open")
}
}
; save and load I/O setting to ini file
; format is like this
; [AutoHotkeyMidi]
; inputDevices=input1name////input2name////
; outputDevices=output1name////
LoadIOSetting(filePath)
{
If (filePath = False or filePath = "")
{
Return
}
If (not FileExist(filePath)){
Return
}
Try
{
setting := IniRead(filePath, "AutoHotkeyMidi", "inputDevices")
If (setting == "ERROR"){
Return
}
names := StrSplit(setting, "////")
For index, inDeviceName In names
{
If (inDeviceName != ""){
this.OpenMidiInByName(inDeviceName)
}
}
}
catch
{
}
Try
{
setting := IniRead(filePath, "AutoHotkeyMidi", "outputDevices")
If (setting == "ERROR"){
Return
}
names := StrSplit(setting, "////")
For index, outDeviceName In names
{
If (outDeviceName != ""){
this.OpenMidiOutByName(outDeviceName)
}
}
}
catch
{
}
}
;should call in OnExit
SaveIOSetting(filePath)
{
If (filePath = False or filePath = "")
{
Return
}
Try
{
setting := ""
If (AHKMidi.__midiInOpenHandlesCount != 0)
{
For midiInDeviceId In AHKMidi.__midiInOpenHandles
{
setting .= AHKMidi.__midiInDevices[midiInDeviceId].deviceName . "////"
}
}
IniWrite setting, filePath, "AutoHotkeyMidi", "inputDevices"
setting := ""
If (AHKMidi.__midiOutOpenHandlesCount != 0)
{
For midiOutDeviceId In AHKMidi.__midiOutOpenHandles
{
setting .= AHKMidi.__midiOutDevices[midiOutDeviceId].deviceName . "////"
}
}
IniWrite setting, filePath, "AutoHotkeyMidi", "outputDevices"
}
catch
{
}
}
SetPassThroughDeviceName(deviceName)
{
AHKMidi.passThroughDeviceHandle := this.DeviceHandleForName(deviceName)
}
; Open a handle to a midi device and start listening for messages
__OpenMidiIn( midiInDeviceId )
{
;;;;global __MidiInHandleEvent
; Look this device up in our device list
device := AHKMidi.__midiInDevices[midiInDeviceId]
; Create variable to store the handle the dll open will give us
; NOTE: Creating variables this way doesn't work with class variables, so
; we have to create it locally and then store it in the class later after
midiInHandle := Buffer( 4, 0 )
; Open the midi device and attach event callbacks
midiInOpenResult := DllCall( "winmm.dll\midiInOpen", "Ptr", midiInHandle, "UINT", midiInDeviceId, "UINT", AHKMidi.__midiInCallbackWindow.Hwnd, "UINT", 0, "UINT", AHKMidi.MIDI_CALLBACK_WINDOW, "UINT" )
; Error handling
If ( midiInOpenResult || ! midiInHandle )
{
MsgBox("Failed to open midi in device")
Return
}
; Fetch the actual handle value from the pointer
midiInHandle := NumGet( midiInHandle, "UINT" )
; Start monitoring midi signals
midiInStartResult := DllCall( "winmm.dll\midiInStart", "UINT", midiInHandle, "UINT" )
; Error handling
If ( midiInStartResult )
{
MsgBox("Failed to start midi in device")
Return
}
; Create a spot in our global event storage for this midi input handle
;;;;__MidiInHandleEvent[midiInHandle] := {}
; Register a callback for each midi event
; We only need to do this once for all devices, so only do it if we are
; the first device to be opened
if ( AHKMidi.__midiInOpenHandlesCount = 0)
{
OnMessage( AHKMidi.MIDI_OPEN, __MidiInCallback )
OnMessage( AHKMidi.MIDI_CLOSE, __MidiInCallback )
OnMessage( AHKMidi.MIDI_DATA, __MidiInCallback )
OnMessage( AHKMidi.MIDI_LONGDATA, __MidiInCallback )
OnMessage( AHKMidi.MIDI_ERROR, __MidiInCallback )
OnMessage( AHKMidi.MIDI_LONGERROR, __MidiInCallback )
OnMessage( AHKMidi.MIDI_MOREDATA, __MidiInCallback )
}
; Add this device handle to our list of open devices
AHKMidi.__midiInOpenHandles[midiInDeviceId] := midiInHandle
; Increase the tally for the number of open handles we have
AHKMidi.__midiInOpenHandlesCount++
; Check this device as enabled in the menu
this.__MidInDevicesMenu.Check(device.deviceName)
}
__CloseMidiIn( midiInDeviceId )
{
; Look this device up in our device list
device := AHKMidi.__midiInDevices[midiInDeviceId]
; Unregister callbacks if we are the last open handle
if ( AHKMidi.__midiInOpenHandlesCount <= 1 )
{
OnMessage( AHKMidi.MIDI_OPEN, __MidiInCallback, 0 )
OnMessage( AHKMidi.MIDI_CLOSE, __MidiInCallback, 0 )
OnMessage( AHKMidi.MIDI_DATA, __MidiInCallback, 0 )
OnMessage( AHKMidi.MIDI_LONGDATA, __MidiInCallback, 0 )
OnMessage( AHKMidi.MIDI_ERROR, __MidiInCallback, 0 )
OnMessage( AHKMidi.MIDI_LONGERROR, __MidiInCallback, 0 )
OnMessage( AHKMidi.MIDI_MOREDATA, __MidiInCallback, 0 )
}
; Destroy any midi in events that might be left over
;;;;__MidiInHandleEvent[midiInHandle] := {}
; Stop monitoring midi
midiInStopResult := DllCall( "winmm.dll\midiInStop", "UINT", AHKMidi.__midiInOpenHandles[midiInDeviceId], "UINT" )
; Error handling
If ( midiInStopResult != 0)
{
MsgBox("Failed to stop midi in device")
Return
}
; Close the midi handle
midiInStopResult := DllCall( "winmm.dll\midiInClose", "UINT", AHKMidi.__midiInOpenHandles[midiInDeviceId], "UINT" )
; Error handling
If ( midiInStopResult != 0)
{
MsgBox("Failed to close midi in device")
Return
}
; Finally, remove the handle from the array
AHKMidi.__midiInOpenHandles.Delete( midiInDeviceId )
; Decrease the tally for the number of open handles we have
AHKMidi.__midiInOpenHandlesCount--
; Uncheck this device in the menu
this.__MidInDevicesMenu.Uncheck(device.deviceName)
}
; Open a handle to a midi device and start listening for messages
__OpenMidiOut( midiOutDeviceId )
{
; Look this device up in our device list
device := AHKMidi.__midiOutDevices[midiOutDeviceId]
; Create variable to store the handle the dll open will give us
; NOTE: Creating variables this way doesn't work with class variables, so
; we have to create it locally and then store it in the class later after
midiOutHandle := Buffer( 4, 0 )
dwFlags := 0
; Open the midi device and attach event callbacks
midiOutOpenResult := DllCall( "winmm.dll\midiOutOpen"
, "Ptr", midiOutHandle
, "UINT", midiOutDeviceId
, "UINT", 0
, "UINT", 0
, "UINT", dwFlags
, "UInt" )
; Error handling
If ( midiOutOpenResult || ! midiOutHandle )
{
MsgBox("Failed to open midi out device")
Return
}
; Fetch the actual handle value from the pointer
midiOutHandle := NumGet( midiOutHandle, "UINT" )
; Add this device handle to our list of open devices
AHKMidi.__midiOutOpenHandles[midiOutDeviceId] := midiOutHandle
; Increase the tally for the number of open handles we have
AHKMidi.__midiOutOpenHandlesCount++
; Check this device as enabled in the menu
this.__MidOutDevicesMenu.Check(device.deviceName)
return
}
__ClosemidiOut( midiOutDeviceId )
{
; Look this device up in our device list
device := AHKMidi.__midiOutDevices[midiOutDeviceId]
; Close the midi handle
midiOutStopResult := DllCall( "winmm.dll\midiOutClose", "UINT", AHKMidi.__midiOutOpenHandles[midiOutDeviceId] , "UINT")
; Error handling
If ( midiOutStopResult )
{
MsgBox("Failed to close midi in device")
Return
}
; Finally, remove the handle from the array
AHKMidi.__midiOutOpenHandles.Delete( midiOutDeviceId )
; Decrease the tally for the number of open handles we have
AHKMidi.__midiOutOpenHandlesCount--
; UnCheck this device in the menu
this.__MidOutDevicesMenu.Uncheck(device.deviceName)
}
}
; Event callback for midi input event
; Note that since this is a callback method, it has no concept of "this" and
; can't access class members
__MidiInCallback( wParam, lParam, msg, hwnd )
{
;;;;global __midiInHandleEvent
; Will hold the midi event object we are building for this event
midiEvent := {}
; Will hold the labels we call so the user can capture this midi event, we
; always start with a generic ":Midi" label so it always gets called first
labelCallbacks := Array()
; Grab the raw midi bytes
rawBytes := lParam
; Split up the raw midi bytes as per the midi spec
highByte := lParam & 0xF0
lowByte := lParam & 0x0F
data1 := (lParam >> 8) & 0xFF
data2 := (lParam >> 16) & 0xFF
; Determine the friendly name of the midi event based on the status byte
if ( highByte == 0x80 || ( highByte == 0x90 && data2 == 0 ) )
{
midiEvent.status := "NoteOff"
}
else if ( highByte == 0x90 )
{
midiEvent.status := "NoteOn"
}
else if ( highByte == 0xA0 )
{
midiEvent.status := "Aftertouch"
}
else if ( highByte == 0xB0 )
{
midiEvent.status := "ControlChange"
}
else if ( highByte == 0xC0 )
{
midiEvent.status := "ProgramChange"
}
else if ( highByte == 0xD0 )
{
midiEvent.status := "ChannelPressure"
}
else if ( highByte == 0xE0 )
{
midiEvent.status := "PitchWheel"
}
else if ( highByte == 0xF0 )
{
midiEvent.status := "Sysex"
}
else
{
Return
}
; Add a label callback for the status, ie ":MidiNoteOn"
labelCallbacks.Push( AHKMidi.midiLabelPrefix . midiEvent.status )
; Determine how to handle the one or two data bytes sent along with the event
; based on what type of status event was seen
if ( midiEvent.status == "NoteOff" || midiEvent.status == "NoteOn" || midiEvent.status == "AfterTouch" )
{
; Store the raw note number and velocity data
midiEvent.noteNumber := data1
midiEvent.velocity := data2
; Figure out which chromatic note this note number represents
noteScaleNumber := Mod( midiEvent.noteNumber, AHKMidi.MIDI_NOTE_SIZE )
; Look up the name of the note in the scale
midiEvent.note := AHKMidi.MIDI_NOTES[ noteScaleNumber + 1 ]
; Determine the octave of the note in the scale
noteOctaveNumber := Floor( midiEvent.noteNumber / AHKMidi.MIDI_NOTE_SIZE )
; Look up the octave for the note
midiEvent.octave := AHKMidi.MIDI_OCTAVES[ noteOctaveNumber + 1 ]
; Create a friendly name for the note and octave, ie: "C4"
midiEvent.noteName := midiEvent.note . midiEvent.octave
; Add label callbacks for notes, ie ":MidiNoteOnA", ":MidiNoteOnA5", ":MidiNoteOn97"
labelCallbacks.Push( AHKMidi.midiLabelPrefix . midiEvent.status . midiEvent.note )
labelCallbacks.Push( AHKMidi.midiLabelPrefix . midiEvent.status . midiEvent.noteName )
labelCallbacks.Push( AHKMidi.midiLabelPrefix . midiEvent.status . midiEvent.noteNumber )
}
else if ( midiEvent.status == "ControlChange" )
{
; Store controller number and value change
midiEvent.controller := data1
midiEvent.value := data2
; Add label callback for this controller change, ie ":MidiControlChange12"
labelCallbacks.Push( AHKMidi.midiLabelPrefix . midiEvent.status . midiEvent.controller )
}
else if ( midiEvent.status == "ProgramChange" )
{
; Store program number change
midiEvent.program := data1
; Add label callback for this program change, ie ":MidiProgramChange2"
labelCallbacks.Push( AHKMidi.midiLabelPrefix . midiEvent.status . midiEvent.program )
}
else if ( midiEvent.status == "ChannelPressure" )
{
; Store pressure change value
midiEvent.pressure := data1
}
else if ( midiEvent.status == "PitchWheel" )
{
; Store pitchwheel change, which is a combination of both data bytes
midiEvent.pitch := ( data2 << 7 ) + data1
}
else if ( midiEvent.status == "Sysex" )
{
; Sysex messages have another status byte that indicates which type of sysex
; message it is (the high byte, which is normally used for the midi channel,