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ripdad

MCI Stereo Level Meter

10 posts in this topic

#1 ·  Posted (edited)

Edit - See post #10 for new script

After a night of study about MCI, I'm pleased to release a much needed code. Better late than never!

; MCI Stereo Level Meter v0.0.3
; Released: November 06, 2010
; AutoIt3 v3.3.6
; Reference: "http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_recording.asp"
Opt('GUIOnEventMode', 1)
Local $ui = GUICreate('Stereo Level Meter', 200, 100, -1, -1, Default, 0x00000008 + 0x00000200)
Local $ProgressBarL = GUICtrlCreateProgress(85, 30, 10, 60, 0x04)
GUICtrlSetBkColor($ProgressBarL, 0xDDFFDD)
Local $ProgressBarR = GUICtrlCreateProgress(97, 30, 10, 60, 0x04)
GUICtrlSetBkColor($ProgressBarR, 0xDDFFDD)
Local $L_Input = GUICtrlCreateInput('', 20, 70, 50, 18)
GUICtrlSetBkColor($L_Input, 0xDDFFDD)
Local $R_Input = GUICtrlCreateInput('', 120, 70, 50, 18)
GUICtrlSetBkColor($R_Input, 0xDDFFDD)
Local $iInput = GUICtrlCreateInput('', 2, 2, 198, 18)
GUICtrlSetBkColor($iInput, 0xDDFFDD)
Local $CursorTrap = GUICtrlCreateInput('', 200, 10, 4, 20)
Local $btn1 = GUICtrlCreateButton('Mono', 20, 40, 50, 20)
Local $btn2 = GUICtrlCreateButton('Stereo', 120, 40, 50, 20)
GUISetState(@SW_SHOW, $ui)
ControlFocus('', '', $CursorTrap)
GUICtrlSetOnEvent($btn1, '_Mono')
GUICtrlSetOnEvent($btn2, '_Stereo')
GUISetOnEvent(-3, '_Exit')
;
Local $Rtn, $MCI_Request[9] = [8, 'bitspersample', 'bytespersec', 'channels', 'input', 'output', 'ready', 'samplespersec', 'time format']
Global $MCI_Level, $MCI_Rtn, $LeftChannel, $RightChannel
Local $Init = MCI_Open()
Local $SetCh = MCI_SetCh(2)
If ($Init == 0) And ($SetCh == 0) Then AdlibRegister('MCI_Status_Level', 1)
;
For $i = 1 To $MCI_Request[0]
    $Rtn = MCI_Status($MCI_Request[$i])
    GUICtrlSetData($iInput, 'MCI_Status_' & $MCI_Request[$i] & ': ' & $Rtn)
    If $i = $MCI_Request[0] Then $i = 0
    Sleep(2000)
Next
;
Func _Exit()
    AdlibUnRegister('MCI_Status_Level')
    GUIDelete($ui)
    Exit
EndFunc
;
Func MCI_Status_Level()
    $MCI_Level = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'status mywave level', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Level[0] <> 0 Then
        AdlibUnRegister('MCI_Status_Level')
        Return
    EndIf
    $LeftChannel = Round(_LoWord((100 * $MCI_Level[2])) / 128) - 1
    $RightChannel = Round(_HiWord((100 * $MCI_Level[2])) / 128) - 1
    If $RightChannel = -1 Then $RightChannel = $LeftChannel
    GUICtrlSetData($ProgressBarL, $LeftChannel)
    GUICtrlSetData($ProgressBarR, $RightChannel)
    GUICtrlSetData($L_Input, 'L - ' & Round($LeftChannel))
    GUICtrlSetData($R_Input, 'R - ' & $RightChannel)
EndFunc
;
Func MCI_Status($request)
    Local $MCI_Status = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'status mywave ' & $request, 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Status[0] <> 0 Then Return -1
    Return $MCI_Status[2]
EndFunc
;
Func MCI_Open()
    Local $MCI_Open = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'open new type waveaudio alias mywave buffer 2', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Open[0] <> 0 Then Return -1
    Return $MCI_Open[0]
EndFunc
;
Func MCI_SetCh($numchannels)
    Local $MCI_SetCh = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'set mywave bitspersample 8 channels ' & $numchannels & ' samplespersec 11025', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_SetCh[0] <> 0 Then Return -1
    Return $MCI_SetCh[0]
EndFunc
;
Func _Mono()
    MCI_SetCh(1)
EndFunc
;
Func _Stereo()
    MCI_SetCh(2)
EndFunc
;
Func _HiWord($value); From WinAPI.au3
    Return BitShift($value, 16)
EndFunc
;
Func _LoWord($value); From WinAPI.au3
    Return BitAND($value, 0xFFFF)
EndFunc

Update: Several tweaks including using Adlib for faster speed. Included a few status requests for potential UDF.

Edited by ripdad

Make yourself sheep and the wolves will eat you - Benjamin Franklin

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Lovely script man! I've been looking for some audio stuff myself and came up with nothing. Cheers for the effort.

One other thing;

How would I modify this to read a microphone? I am a dj and I wanna make a beat keeper.


ongoing projects:-firestorm: Largescale P2P Social NetworkCompleted Autoit Programs/Scripts: Variable Pickler | Networked Streaming Audio (in pure autoIT) | firenet p2p web messenger | Proxy Checker | Dynamic Execute() Code Generator | P2P UDF | Graph Theory Proof of Concept - Breadth First search

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It reads the mixer inputs. Just open the mixer and enable mic in the recording dialog.

By the way .. the readings on this meter are nominal peaks. It's not a great instrument

like some meters I've seen, but it does give a fair audio indication.

On another note:

I think msdn has the channels backwards (ie: left is right and right is left)

Anyone notice this or is this just my setup? If this is true - I'll change it.

I've also made a few tweaks which I'll update soon.


Make yourself sheep and the wolves will eat you - Benjamin Franklin

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Update


Make yourself sheep and the wolves will eat you - Benjamin Franklin

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#5 ·  Posted (edited)

You searched for a progressbar which is showing from top to buttom.

I added a GDI+ progressbar which should work as you wanted but I couldn't test it because my micro is not working.

[b]
; MCI Stereo Level Meter v0.0.3
; Released: November 06, 2010
; AutoIt3 v3.3.6
; Reference: "http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_recording.asp"
#include <GDIPlus.au3>
#Include <Memory.au3>
_GDIPlus_Startup()

Opt('GUIOnEventMode', 1)
Local $ui = GUICreate('Stereo Level Meter', 200, 100, -1, -1, Default, 0x00000008 + 0x00000200)
;~ Local $ProgressBarL = GUICtrlCreateProgress(85, 30, 10, 60, 0x04)
;~ GUICtrlSetBkColor($ProgressBarL, 0xDDFFDD)
;~ Local $ProgressBarR = GUICtrlCreateProgress(97, 30, 10, 60, 0x04)
;~ GUICtrlSetBkColor($ProgressBarR, 0xDDFFDD)
Local $L_Input = GUICtrlCreateInput('', 20, 70, 50, 18)
GUICtrlSetBkColor($L_Input, 0xDDFFDD)
Local $R_Input = GUICtrlCreateInput('', 120, 70, 50, 18)
GUICtrlSetBkColor($R_Input, 0xDDFFDD)
Local $iInput = GUICtrlCreateInput('', 2, 2, 198, 18)
GUICtrlSetBkColor($iInput, 0xDDFFDD)
Local $CursorTrap = GUICtrlCreateInput('', 200, 10, 4, 20)
Local $btn1 = GUICtrlCreateButton('Mono', 20, 40, 50, 20)
Local $btn2 = GUICtrlCreateButton('Stereo', 120, 40, 50, 20)

ControlFocus('', '', $CursorTrap)
GUICtrlSetOnEvent($btn1, '_Mono')
GUICtrlSetOnEvent($btn2, '_Stereo')
GUISetOnEvent(-3, '_Exit')
;
Local $Rtn, $MCI_Request[9] = [8, 'bitspersample', 'bytespersec', 'channels', 'input', 'output', 'ready', 'samplespersec', 'time format']
Global $MCI_Level, $MCI_Rtn, $LeftChannel, $RightChannel, $ii
Local $Init = MCI_Open()
Local $SetCh = MCI_SetCh(2)

Local $hBrush = _GDIPlus_BrushCreateSolid()
Local $hImage = Load_BMP_From_Mem(Progressbar_Bg())
Local $hGraphic = _GDIPlus_GraphicsCreateFromHWND($ui)
Local $bg_w = 10, $bg_h = 60
Local $hBitmap = _GDIPlus_BitmapCreateFromGraphics($bg_w, $bg_h, $hGraphic)
Local $hContext = _GDIPlus_ImageGetGraphicsContext($hBitmap)
Progressbar(0, 0)
[size=2]GUISetState(@SW_SHOW, $ui)[/size]
[size=2][/size]

If ($Init == 0) And ($SetCh == 0) Then AdlibRegister('MCI_Status_Level', 1)
[size=2];~ [/size]AdlibRegister('MCI_Status_Level', 1)
;

For $i = 1 To $MCI_Request[0]
    $Rtn = MCI_Status($MCI_Request[$i])
    GUICtrlSetData($iInput, 'MCI_Status_' & $MCI_Request[$i] & ': ' & $Rtn)
    If $i = $MCI_Request[0] Then $i = 0
    Sleep(2000)
Next
;

Func Progressbar($lChl, $rChl)
    _GDIPlus_GraphicsClear($hContext)

    _GDIPlus_GraphicsDrawImageRect($hContext, $hImage, 0, 0, $bg_w, $bg_h)
    _GDIPlus_BrushSetSolidColor($hBrush, 0x8000E000)
    _GDIPlus_GraphicsFillRect($hContext, 1, 1, 5, Ceiling($lChl * ($bg_h -  0.02)), $hBrush)
    _GDIPlus_BrushSetSolidColor($hBrush, 0x80008000)
    _GDIPlus_GraphicsFillRect($hContext, 6, 1, 3, Ceiling($lChl * ($bg_h -  0.02)), $hBrush)
    _GDIPlus_BrushSetSolidColor($hBrush, 0x8000FF00)
    _GDIPlus_GraphicsFillRect($hContext, 1, Ceiling($lChl * ($bg_h -  0.02)), 8, 1, $hBrush)
    _GDIPlus_GraphicsDrawImageRect($hGraphic, $hBitmap, 85, 30, $bg_w, $bg_h)

    _GDIPlus_GraphicsDrawImageRect($hContext, $hImage, 0, 0, $bg_w, $bg_h)
    _GDIPlus_BrushSetSolidColor($hBrush, 0x8000E000)
    _GDIPlus_GraphicsFillRect($hContext, 1, 1, 5, Ceiling($rChl * ($bg_h -  0.02)), $hBrush)
    _GDIPlus_BrushSetSolidColor($hBrush, 0x80008000)
    _GDIPlus_GraphicsFillRect($hContext, 6, 1, 3, Ceiling($rChl * ($bg_h -  0.02)), $hBrush)
    _GDIPlus_BrushSetSolidColor($hBrush, 0x8000FF00)
    _GDIPlus_GraphicsFillRect($hContext, 1, Ceiling($rChl * ($bg_h -  0.02)), 8, 1, $hBrush)
    _GDIPlus_GraphicsDrawImageRect($hGraphic, $hBitmap, 97, 30, $bg_w, $bg_h)
    Return 1
EndFunc

Func _Exit()
    _GDIPlus_ImageDispose($hImage)
    _GDIPlus_BrushDispose($hBrush)
    _GDIPlus_BitmapDispose($hBitmap)
    _GDIPlus_GraphicsDispose($hContext)
    _GDIPlus_GraphicsDispose($hGraphic)
    _GDIPlus_Shutdown()
    AdlibUnRegister('MCI_Status_Level')
    GUIDelete($ui)
    Exit
EndFunc
;
Func MCI_Status_Level()
    $MCI_Level = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'status mywave level', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Level[0] <> 0 Then
        AdlibUnRegister('MCI_Status_Level')
        Return
    EndIf
    $LeftChannel = Round(_LoWord((100 * $MCI_Level[2])) / 128) - 1
    $RightChannel = Round(_HiWord((100 * $MCI_Level[2])) / 128) - 1
    If $RightChannel = -1 Then $RightChannel = $LeftChannel
    Progressbar($LeftChannel, $RightChannel)
;~  GUICtrlSetData($ProgressBarL, $LeftChannel)
;~  GUICtrlSetData($ProgressBarR, $RightChannel)
    GUICtrlSetData($L_Input, 'L - ' & Round($LeftChannel))
    GUICtrlSetData($R_Input, 'R - ' & $RightChannel)
EndFunc
;
Func MCI_Status($request)
    Local $MCI_Status = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'status mywave ' & $request, 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Status[0] <> 0 Then Return -1
    Return $MCI_Status[2]
EndFunc
;
Func MCI_Open()
    Local $MCI_Open = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'open new type waveaudio alias mywave buffer 2', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Open[0] <> 0 Then Return -1
    Return $MCI_Open[0]
EndFunc
;
Func MCI_SetCh($numchannels)
    Local $MCI_SetCh = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'set mywave bitspersample 8 channels ' & $numchannels & ' samplespersec 11025', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_SetCh[0] <> 0 Then Return -1
    Return $MCI_SetCh[0]
EndFunc
;
Func _Mono()
    MCI_SetCh(1)
EndFunc
;
Func _Stereo()
    MCI_SetCh(2)
EndFunc
;
Func _HiWord($value); From WinAPI.au3
    Return BitShift($value, 16)
EndFunc
;
Func _LoWord($value); From WinAPI.au3
    Return BitAND($value, 0xFFFF)
EndFunc

Func Load_BMP_From_Mem($mem_image) ;coded by UEZ - thanks to progandy form the MemGlobalAlloc lines
    Local $memBitmap, $len, $tMem, $hImage
    $memBitmap = Binary($mem_image) ;load image  saved in variable (memory) and convert it to binary
    $len =  BinaryLen($memBitmap) ;get length of image

    $hData  = _MemGlobalAlloc($len, $GMEM_MOVEABLE) ;allocates movable memory  ($GMEM_MOVEABLE = 0x0002)
    $pData = _MemGlobalLock($hData)  ;translate the handle into a pointer
    $tMem =  DllStructCreate("byte[" & $len & "]", $pData) ;create struct
    DllStructSetData($tMem, 1, $memBitmap) ;fill struct with image data
    _MemGlobalUnlock($hData) ;decrements the lock count  associated with a memory object that was allocated with GMEM_MOVEABLE

    $hStream = _WinAPI_CreateStreamOnHGlobal($pData) ;Creates a stream object that uses an HGLOBAL memory handle to store the stream contents
    $hBitmapFromStream = _GDIPlus_BitmapCreateFromStream($hStream) ;Creates a Bitmap object based on an IStream COM interface
    $tMem = ""
    Return $hBitmapFromStream
EndFunc

; #FUNCTION# ====================================================================================================================
; Name...........: _WinAPI_CreateStreamOnHGlobal
; Description ...: Creates a stream object that uses an HGLOBAL memory handle to store the stream contents
; Syntax.........: _WinAPI_CreateStreamOnHGlobal([$hGlobal = 0[, $fDeleteOnRelease = True]])
; Parameters ....: $hGlobal          - A memory handle. If 0, a new handle is to be allocated instead
;                  $fDeleteOnRelease - If True, the release of the IStream interface releases the memory handle as well.
;                  Otherwise, it's the responsibility of the user to release this memory handle.
; Return values .: Success      - A pointer to new stream object
;                  Failure      - 0
; Remarks .......: None
; Related .......: _MemGlobalFree
; Link ..........; @@MsdnLink@@ CreateStreamOnHGlobal
; Example .......; No
; ===============================================================================================================================
Func _WinAPI_CreateStreamOnHGlobal($hGlobal = 0, $fDeleteOnRelease = True)
    Local $aResult = DllCall("ole32.dll", "int", "CreateStreamOnHGlobal", "hwnd", $hGlobal, "int", $fDeleteOnRelease, "ptr*", 0)
    If @error Then Return SetError(@error, @extended, 0)
    Return $aResult[3]
EndFunc   ;==>_WinAPI_CreateStreamOnHGlobal

; #FUNCTION# ====================================================================================================================
; Name...........: _GDIPlus_BitmapCreateFromStream
; Description ...: Creates a Bitmap object based on an IStream COM interface
; Syntax.........: _GDIPlus_BitmapCreateFromStream($pStream)
; Parameters ....: $pStream - Pointer to an IStream COM interface
; Return values .: Success      - Returns a handle to a new Bitmap object
;                  Failure      - 0 and either:
;                  |@error and @extended are set if DllCall failed
;                  |$GDIP_STATUS contains a non zero value specifying the error code
; Remarks .......: After you are done with the object, call _GDIPlus_ImageDispose to release the object resources
; Related .......: _GDIPlus_ImageDispose, _WinAPI_CreateStreamOnHGlobal
; Link ..........; @@MsdnLink@@ GdipCreateBitmapFromStream
; Example .......; Yes
; ===============================================================================================================================
Func _GDIPlus_BitmapCreateFromStream($pStream)
    Local $aResult = DllCall($ghGDIPDll, "uint", "GdipCreateBitmapFromStream", "ptr", $pStream, "int*", 0)

    If @error Then Return SetError(@error, @extended, 0)
    $GDIP_STATUS = $aResult[0]
    Return $aResult[2]
EndFunc   ;==>_GDIPlus_BitmapCreateFromStream

Func Progressbar_Bg()
    Local _
    $BinaryImage = '0x89504E470D0A1A0A0000000D494844520000000A0000003C080300000068CFDB3F00000093504C5445DADADAD1D1D1DDDDDDB2B2B2D5D5D5D3D3D3D9D9D9A1A1A1C6C6C6D4D4D4D6D6D6C5C5C5CBCB'
    $BinaryImage &= 'CBE5E5E5CACACADBDBDBE1E1E1CCCCCCC7C7C7D7D7D7C3C3C3FAFAFAC0C0C0E7E7E7E3E3E3FCFCFC8C8C8CA5A5A59D9D9DD8D8D8949494AEAEAEC1C1C1BDBDBDF3F3F39B9B9BE0E0E0C2C2C2A8A8A8BF'
    $BinaryImage &= 'BFBFC4C4C4E2E2E2DCDCDC919191CFCFCFE4E4E4C8C8C8CECECEEAEAEA1C3995C00000007849444154785EEDD2351203310C405149667B19C3CC7CFFD365BC8D32394226DDEBFF87D7F2303566BBB8F6'
    $BinaryImage &= '6037E98E0851CD40B4C51C71DD351310E3422B756C42E439776E15AAC81148B9AFB281B9F7A7AC1C78A96B5BDE22EFA4F5E38991290124287F827F7258CECD13F01A5FC3F0463C172FF731E21B648C1B'
    $BinaryImage &= '772CF6E1A90000000049454E44AE426082'
    Return $BinaryImage
EndFunc[/b]

Br,

UEZ

Edited by UEZ

Please don't send me any personal message and ask for support! I will not reply!

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Her 'sikim hıyar' diyene bir avuç tuz alıp koşma!
¯\_(ツ)_/¯

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UEZ - I had a little trouble with it at first. Seems the formatting was messed up a little with html code.

From your script:

[size=2]GUISetState(@SW_SHOW, $ui)[/size]
[size=2][/size]

If ($Init == 0) And ($SetCh == 0) Then AdlibRegister('MCI_Status_Level', 1)
[size=2]

I cleaned it up and got it working enough to test the turn around speed of the function --> 4ms

Not bad at all - the best I've seen so far.

It's displaying left to right though on my screen. I'll work with it and see if I can get proper aspect.


Make yourself sheep and the wolves will eat you - Benjamin Franklin

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Okay .. I think I have the hang of it. Managed to get it down to 3ms. Thanks UEZ - you've been a great help.

#include <GDIPlus.au3>
#include <Memory.au3>
_GDIPlus_Startup()
;
Opt('GUIOnEventMode', 1)
Local $ui = GUICreate('Stereo Level Meter', 200, 200, -1, -1, Default, 0x00000008 + 0x00000200)
Local $L_Input = GUICtrlCreateInput('', 20, 70, 50, 18)
GUICtrlSetBkColor($L_Input, 0xDDFFDD)
Local $iInput = GUICtrlCreateInput('', 2, 2, 198, 18)
GUICtrlSetBkColor($iInput, 0xDDFFDD)
Local $CursorTrap = GUICtrlCreateInput('', 200, 10, 4, 20)
;
Local $hBrush = _GDIPlus_BrushCreateSolid()
Local $hImage = Load_BMP_From_Mem(Progressbar_Bg()); Load Background Image
Local $hGraphic = _GDIPlus_GraphicsCreateFromHWND($ui)

Local $bg_w = 10, $bg_h = 100

Local $hBitmap = _GDIPlus_BitmapCreateFromGraphics($bg_w, $bg_h, $hGraphic)
Local $hContext = _GDIPlus_ImageGetGraphicsContext($hBitmap)
Progressbar(0, 0)
;
GUISetState(@SW_SHOW, $ui)
ControlFocus('', '', $CursorTrap)
GUISetOnEvent(-3, '_Exit')
;
Local $Rtn, $MCI_Request[9] = [8, 'bitspersample', 'bytespersec', 'channels', 'input', 'output', 'ready', 'samplespersec', 'time format']
Global $MCI_Level, $MCI_Rtn, $LeftChannel, $RightChannel
Local $Init = MCI_Open()
Local $SetCh = MCI_SetCh(2)
;
If ($Init == 0) And ($SetCh == 0) Then AdlibRegister('MCI_AdLib', 4)
;
For $i = 1 To $MCI_Request[0]
    $Rtn = MCI_Status($MCI_Request[$i])
    GUICtrlSetData($iInput, 'MCI_Status_' & $MCI_Request[$i] & ': ' & $Rtn)
    If $i = $MCI_Request[0] Then $i = 0
    Sleep(2000)
Next
;
Func MCI_AdLib()
    $timer = TimerInit()
    MCI_Status_Level()
    GUICtrlSetData($L_Input, Round(TimerDiff($timer)) & 'ms')
EndFunc
;
Func Progressbar($lChl, $rChl)
    _GDIPlus_GraphicsClear($hContext)

    ; Left Channel
    _GDIPlus_GraphicsDrawImageRect($hContext, $hImage, 0, 0, $bg_w, $bg_h)
    _GDIPlus_BrushSetSolidColor($hBrush, 0xF000E000)
    _GDIPlus_GraphicsFillRect($hContext, 1, 1, 8, $lChl, $hBrush)
    _GDIPlus_GraphicsDrawImageRect($hGraphic, $hBitmap, 85, 40, $bg_w, $bg_h)

    ; Right Channel
    _GDIPlus_GraphicsDrawImageRect($hContext, $hImage, 0, 0, $bg_w, $bg_h)
    _GDIPlus_BrushSetSolidColor($hBrush, 0xF000E000)
    _GDIPlus_GraphicsFillRect($hContext, 1, 1, 8, $rChl, $hBrush)
    _GDIPlus_GraphicsDrawImageRect($hGraphic, $hBitmap, 97, 40, $bg_w, $bg_h); Position and Draw
    Return 1
EndFunc
;
Func _Exit()
    _GDIPlus_ImageDispose($hImage)
    _GDIPlus_BrushDispose($hBrush)
    _GDIPlus_BitmapDispose($hBitmap)
    _GDIPlus_GraphicsDispose($hContext)
    _GDIPlus_GraphicsDispose($hGraphic)
    _GDIPlus_Shutdown()
    AdlibUnRegister('MCI_Status_Level')
    GUIDelete($ui)
    Exit
EndFunc
;
Func MCI_Status_Level()
    $MCI_Level = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'status mywave level', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Level[0] <> 0 Then
        AdlibUnRegister('MCI_Status_Level')
        Return
    EndIf
    $LeftChannel = Round(_LoWord((100 * $MCI_Level[2])) / 128) - 1
    $RightChannel = Round(_HiWord((100 * $MCI_Level[2])) / 128) - 1
    If $RightChannel = -1 Then $RightChannel = $LeftChannel
    Progressbar($LeftChannel, $RightChannel)
EndFunc
;
Func MCI_Status($request)
    Local $MCI_Status = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'status mywave ' & $request, 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Status[0] <> 0 Then Return -1
    Return $MCI_Status[2]
EndFunc
;
Func MCI_Open()
    Local $MCI_Open = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'open new type waveaudio alias mywave buffer 2', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_Open[0] <> 0 Then Return -1
    Return $MCI_Open[0]
EndFunc
;
Func MCI_SetCh($numchannels)
    Local $MCI_SetCh = DllCall('winmm.dll', 'long', 'mciSendStringA', 'str', 'set mywave bitspersample 8 channels ' & $numchannels & ' samplespersec 11025', 'str', $MCI_Rtn, 'long', 64, 'long', 0)
    If $MCI_SetCh[0] <> 0 Then Return -1
    Return $MCI_SetCh[0]
EndFunc
;
Func _Mono()
    MCI_SetCh(1)
EndFunc
;
Func _Stereo()
    MCI_SetCh(2)
EndFunc
;
Func _HiWord($value); From WinAPI.au3
    Return BitShift($value, 16)
EndFunc
;
Func _LoWord($value); From WinAPI.au3
    Return BitAND($value, 0xFFFF)
EndFunc

Func Load_BMP_From_Mem($mem_image) ;coded by UEZ - thanks to progandy form the MemGlobalAlloc lines
    Local $memBitmap, $len, $tMem, $hImage
    $memBitmap = Binary($mem_image) ;load image  saved in variable (memory) and convert it to binary
    $len = BinaryLen($memBitmap) ;get length of image

    $hData = _MemGlobalAlloc($len, $GMEM_MOVEABLE) ;allocates movable memory  ($GMEM_MOVEABLE = 0x0002)
    $pData = _MemGlobalLock($hData) ;translate the handle into a pointer
    $tMem = DllStructCreate("byte[" & $len & "]", $pData) ;create struct
    DllStructSetData($tMem, 1, $memBitmap) ;fill struct with image data
    _MemGlobalUnlock($hData) ;decrements the lock count  associated with a memory object that was allocated with GMEM_MOVEABLE

    $hStream = _WinAPI_CreateStreamOnHGlobal($pData) ;Creates a stream object that uses an HGLOBAL memory handle to store the stream contents
    $hBitmapFromStream = _GDIPlus_BitmapCreateFromStream($hStream) ;Creates a Bitmap object based on an IStream COM interface
    $tMem = ""
    Return $hBitmapFromStream
EndFunc

; #FUNCTION# ====================================================================================================================
; Name...........: _WinAPI_CreateStreamOnHGlobal
; Description ...: Creates a stream object that uses an HGLOBAL memory handle to store the stream contents
; Syntax.........: _WinAPI_CreateStreamOnHGlobal([$hGlobal = 0[, $fDeleteOnRelease = True]])
; Parameters ....: $hGlobal          - A memory handle. If 0, a new handle is to be allocated instead
;                  $fDeleteOnRelease - If True, the release of the IStream interface releases the memory handle as well.
;                  Otherwise, it's the responsibility of the user to release this memory handle.
; Return values .: Success      - A pointer to new stream object
;                  Failure      - 0
; Remarks .......: None
; Related .......: _MemGlobalFree
; Link ..........; @@MsdnLink@@ CreateStreamOnHGlobal
; Example .......; No
; ===============================================================================================================================
Func _WinAPI_CreateStreamOnHGlobal($hGlobal = 0, $fDeleteOnRelease = True)
    Local $aResult = DllCall("ole32.dll", "int", "CreateStreamOnHGlobal", "hwnd", $hGlobal, "int", $fDeleteOnRelease, "ptr*", 0)
    If @error Then Return SetError(@error, @extended, 0)
    Return $aResult[3]
EndFunc ;==>_WinAPI_CreateStreamOnHGlobal

; #FUNCTION# ====================================================================================================================
; Name...........: _GDIPlus_BitmapCreateFromStream
; Description ...: Creates a Bitmap object based on an IStream COM interface
; Syntax.........: _GDIPlus_BitmapCreateFromStream($pStream)
; Parameters ....: $pStream - Pointer to an IStream COM interface
; Return values .: Success      - Returns a handle to a new Bitmap object
;                  Failure      - 0 and either:
;                  |@error and @extended are set if DllCall failed
;                  |$GDIP_STATUS contains a non zero value specifying the error code
; Remarks .......: After you are done with the object, call _GDIPlus_ImageDispose to release the object resources
; Related .......: _GDIPlus_ImageDispose, _WinAPI_CreateStreamOnHGlobal
; Link ..........; @@MsdnLink@@ GdipCreateBitmapFromStream
; Example .......; Yes
; ===============================================================================================================================
Func _GDIPlus_BitmapCreateFromStream($pStream)
    Local $aResult = DllCall($ghGDIPDll, "uint", "GdipCreateBitmapFromStream", "ptr", $pStream, "int*", 0)
    If @error Then Return SetError(@error, @extended, 0)
    $GDIP_STATUS = $aResult[0]
    Return $aResult[2]
EndFunc ;==>_GDIPlus_BitmapCreateFromStream

Func Progressbar_Bg(); PNG Graphic
    Local _
            $BinaryImage = '0x89504E470D0A1A0A0000000D494844520000000A0000003C080300000068CFDB3F00000093504C5445DADADAD1D1D1DDDDDDB2B2B2D5D5D5D3D3D3D9D9D9A1A1A1C6C6C6D4D4D4D6D6D6C5C5C5CBCB'
    $BinaryImage &= 'CBE5E5E5CACACADBDBDBE1E1E1CCCCCCC7C7C7D7D7D7C3C3C3FAFAFAC0C0C0E7E7E7E3E3E3FCFCFC8C8C8CA5A5A59D9D9DD8D8D8949494AEAEAEC1C1C1BDBDBDF3F3F39B9B9BE0E0E0C2C2C2A8A8A8BF'
    $BinaryImage &= 'BFBFC4C4C4E2E2E2DCDCDC919191CFCFCFE4E4E4C8C8C8CECECEEAEAEA1C3995C00000007849444154785EEDD2351203310C405149667B19C3CC7CFFD365BC8D32394226DDEBFF87D7F2303566BBB8F6'
    $BinaryImage &= '6037E98E0851CD40B4C51C71DD351310E3422B756C42E439776E15AAC81148B9AFB281B9F7A7AC1C78A96B5BDE22EFA4F5E38991290124287F827F7258CECD13F01A5FC3F0463C172FF731E21B648C1B'
    $BinaryImage &= '772CF6E1A90000000049454E44AE426082'
    Return $BinaryImage
EndFunc

#cs ( Save )
    
    Func Progressbar($lChl, $rChl)
    _GDIPlus_GraphicsClear($hContext)
    
    ; Left Channel
    _GDIPlus_GraphicsDrawImageRect($hContext, $hImage, 0, 0, $bg_w, $bg_h)
    _GDIPlus_BrushSetSolidColor($hBrush, 0xF000E000)
    _GDIPlus_GraphicsFillRect($hContext, 1, 1, 8, $lChl, $hBrush); Ceiling($lChl * ($bg_h -  0.02)), $hBrush)
    ;_GDIPlus_BrushSetSolidColor($hBrush, 0x80008000)
    ;_GDIPlus_GraphicsFillRect($hContext, 6, 1, 3, $lChl, $hBrush); Ceiling($lChl * ($bg_h -  0.02)), $hBrush)
    ;_GDIPlus_BrushSetSolidColor($hBrush, 0x8000FF00)
    ;_GDIPlus_GraphicsFillRect($hContext, 1, $lChl, 8, 1, $hBrush); Ceiling($lChl * ($bg_h -  0.02)), 8, 1, $hBrush)
    _GDIPlus_GraphicsDrawImageRect($hGraphic, $hBitmap, 85, 30, $bg_w, $bg_h); ### Position and Draw
    
    ; Right Channel
    _GDIPlus_GraphicsDrawImageRect($hContext, $hImage, 0, 0, $bg_w, $bg_h)
    _GDIPlus_BrushSetSolidColor($hBrush, 0xF000E000)
    _GDIPlus_GraphicsFillRect($hContext, 1, 1, 8, $rChl, $hBrush); Ceiling($rChl * ($bg_h -  0.02)), $hBrush)
    ;_GDIPlus_BrushSetSolidColor($hBrush, 0x80008000)
    ;_GDIPlus_GraphicsFillRect($hContext, 6, 1, 3, $rChl, $hBrush); Ceiling($rChl * ($bg_h -  0.02)), $hBrush)
    ;_GDIPlus_BrushSetSolidColor($hBrush, 0x8000FF00)
    ;_GDIPlus_GraphicsFillRect($hContext, 1, $rChl, 8, 1, $hBrush); $rChl * ($bg_h -  0.02)), 8, 1, $hBrush)
    _GDIPlus_GraphicsDrawImageRect($hGraphic, $hBitmap, 97, 30, $bg_w, $bg_h); ### Position and Draw
    Return 1
    EndFunc
    
#ce

Make yourself sheep and the wolves will eat you - Benjamin Franklin

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#8 ·  Posted (edited)

This is just too cool not to share.

- It has up-to-date code for the stand-alone MCI Stereo Level Meter.

- Includes calibration and decay rate.

; Released: Nov-23-2010
Local $ui = GUICreate('MCI Stereo Level Meter', 250, 120, -1, -1, Default, 0x00000008)
Local $ctp = GUICtrlCreateInput('', 185, 5, 4, 20)
Global $pbl = GUICtrlCreateInput('', 25, 12, 200, 16, 0x00, 0x00000020)
GUICtrlSetFont($pbl, 6, 600, Default, 'arial narrow')
GUICtrlSetBkColor($pbl, 0x000000)
GUICtrlSetColor($pbl, 0x00FFFF)
Global $pbr = GUICtrlCreateInput('', 25, 28, 200, 16, 0x00, 0x00000020)
GUICtrlSetFont($pbr, 6, 600, Default, 'arial narrow')
GUICtrlSetBkColor($pbr, 0x000000)
GUICtrlSetColor($pbr, 0x00FFFF)
GUICtrlCreateLabel('Calibrate', 10, 60, 45, 15)
Local $cal = GUICtrlCreateSlider(60, 60, 150, 15)
Local $calN = GUICtrlCreateLabel('30', 220, 60, 28, 15)
GUICtrlSetLimit($cal, 100, 0)
GUICtrlSetData($cal, 50)
GUICtrlCreateLabel('Decay', 10, 90, 45, 15)
Local $dec = GUICtrlCreateSlider(60, 90, 150, 15)
Local $decN = GUICtrlCreateLabel('1', 220, 90, 28, 15)
GUICtrlSetLimit($dec, 11, 1)
GUICtrlSetData($dec, 6)
GUISetState(@SW_SHOW, $ui)
ControlFocus('', '', $ctp)
;
Global $mciLevel, $LeftChannel, $RightChannel, $rs, $temp, $sDiv, $tDiv, $tDec, $decay
Global $mciDll = DllOpen(@SystemDir & '\winmm.dll')
If @error Then Exit
mciInit()
AdLibRegister('mci_Status_Level', 3)
;
Do; Main loop
    $rs = GUICtrlRead($cal)
    If $rs <> $tDiv Then
        $tDiv = $rs
        $sDiv = (100 / $tDiv)
        GUICtrlSetData($calN, $tDiv)
        ControlFocus('', '', $ctp)
    EndIf
    $rs = GUICtrlRead($dec)
    If $rs <> $tDec Then
        $tDec = $rs
        $decay = $rs / 4
        GUICtrlSetData($decN, $decay)
        ControlFocus('', '', $ctp)
    EndIf
Until GUIGetMsg() = -3
;
; Cleanup before exit
AdLibUnRegister('mci_Status_Level')
GUIDelete($ui)
mciSendString('stop myStatus')
mciSendString('close myStatus')
DllClose($mciDll)
Exit
;
Func _HiWord($value); From WinAPI.au3
    Return BitShift($value, 16)
EndFunc
;
Func _LoWord($value); From WinAPI.au3
    Return BitAND($value, 0xFFFF)
EndFunc
;
Func n2sRepeat($sNum = '', $string = '|', $sRtn = ''); Element repeater
    For $n = 1 To $sNum
        $sRtn &= $string
    Next
    Return $sRtn
EndFunc
;
Func mciInit(); Open a live stream and set 2 channel parameters
    mciSendString('open new type waveaudio alias myStatus buffer 2')
    If @error Then Exit
    mciSendString('set myStatus bitspersample 8 channels 2 samplespersec 11025')
    If @error Then Exit
EndFunc
;
Func mci_Status_Level(); Get levels and apply decay rate
    $mciLevel = mciSendString('status myStatus level')
    If @error Then Exit
    $temp = Round((_LoWord($mciLevel) / 128) * 100 / $sDiv) - 1
    If $temp > $LeftChannel Then $LeftChannel = $temp; <-- snitched from bassenc udf - thanks BrettF
    $temp = Round((_HiWord($mciLevel) / 128) * 100 / $sDiv) - 1
    If $temp > $RightChannel Then $RightChannel = $temp; <--
    GUICtrlSetData($pbl, n2sRepeat($LeftChannel))
    GUICtrlSetData($pbr, n2sRepeat($RightChannel))
    $LeftChannel -= $decay; <--
    $RightChannel -= $decay; <--
EndFunc
;
Func mciSendString($string = '', $mciMsg = ''); Custom MCI Command and Error Function (Nov-19-2010)
    $mciMsg = DllCall($mciDll, 'long', 'mciSendStringA', 'str', $string, 'str', '', 'int', 180, 'ptr', 0)
    If @error Then Return SetError(@error)
    If $mciMsg[0] <> 0 Then
        Local $eMsg = DllCall($mciDll, 'long', 'mciGetErrorStringA', 'int', $mciMsg[0], 'str', '', 'int', 180)
        If @error Then Return SetError(@error)
        MsgBox(8208, 'MCI Stereo Level Meter', 'MCI Error: ' & $mciMsg[0] & @CRLF & $eMsg[2])
        Return SetError(-1)
    EndIf
    SetError(0)
    Return $mciMsg[2]
EndFunc
;

Edit

Changed some math

Edited by ripdad

Make yourself sheep and the wolves will eat you - Benjamin Franklin

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#9 ·  Posted (edited)

Here's another using GDIPlus ...

; Released: Nov-23-2010  [with GDIPlus]
#include <GDIPlus.au3>
Local $ui = GUICreate('MCI Stereo Level Meter', 300, 120, -1, -1, Default, 0x00000008)
Local $ctp = GUICtrlCreateInput('', 300, 5, 4, 15)
GUICtrlCreateLabel('Calibrate', 10, 40, 45, 15)
Local $cal = GUICtrlCreateSlider(60, 40, 150, 15)
Local $calN = GUICtrlCreateLabel('50', 220, 40, 28, 15)
GUICtrlSetLimit($cal, 100, 0)
GUICtrlSetData($cal, 50)
GUICtrlCreateLabel('Decay', 10, 70, 45, 15)
Local $dec = GUICtrlCreateSlider(60, 70, 150, 15)
Local $decN = GUICtrlCreateLabel('1.5', 220, 70, 28, 15)
GUICtrlSetLimit($dec, 11, 1)
GUICtrlSetData($dec, 6)
;
_GDIPlus_Startup()
Global $hImage1, $hBrush1 = _GDIPlus_BrushCreateSolid()
Global $hGraphic1 = _GDIPlus_GraphicsCreateFromHWND($ui)
Global $bg_w1 = 10, $bg_h1 = 80
Global $hBitmap1 = _GDIPlus_BitmapCreateFromGraphics($bg_w1, $bg_h1, $hGraphic1)
Global $hContext1 = _GDIPlus_ImageGetGraphicsContext($hBitmap1)
GUISetState(@SW_SHOW, $ui)
ControlFocus('', '', $ctp)
;
Global $mciLevel, $LeftChannel, $RightChannel, $rs, $temp, $sDiv, $tDiv, $tDec, $decay
Global $mciDll = DllOpen(@SystemDir & '\winmm.dll')
If @error Then Exit
mciInit()
AdLibRegister('mci_Status_Level', 3)
;
Do; Main loop
    $rs = GUICtrlRead($cal)
    If $rs <> $tDiv Then
        $tDiv = $rs
        $sDiv = (100 / $tDiv)
        GUICtrlSetData($calN, $tDiv)
        ControlFocus('', '', $ctp)
    EndIf
    $rs = GUICtrlRead($dec)
    If $rs <> $tDec Then
        $tDec = $rs
        $decay = $rs / 4
        GUICtrlSetData($decN, $decay)
        ControlFocus('', '', $ctp)
    EndIf
Until GUIGetMsg() = -3
;
; Cleanup before exit
AdLibUnRegister('mci_Status_Level')
GUIDelete($ui)
mciSendString('stop myStatus')
mciSendString('close myStatus')
DllClose($mciDll)
Exit
;
Func _HiWord($value); From WinAPI.au3
    Return BitShift($value, 16)
EndFunc
;
Func _LoWord($value); From WinAPI.au3
    Return BitAND($value, 0xFFFF)
EndFunc
;
Func mciInit(); Open a live stream and set 2 channel parameters
    mciSendString('open new type waveaudio alias myStatus buffer 2')
    If @error Then Exit
    mciSendString('set myStatus bitspersample 8 channels 2 samplespersec 11025')
    If @error Then Exit
EndFunc
;
Func mci_Status_Level(); Get levels and apply decay rate
    $mciLevel = mciSendString('status myStatus level')
    If @error Then Exit
    $temp = Round((_LoWord($mciLevel) / 128) * 100 / $sDiv) - 1
    If $temp > $LeftChannel Then $LeftChannel = $temp; <-- snitched from bassenc udf - thanks BrettF
    $temp = Round((_HiWord($mciLevel) / 128) * 100 / $sDiv) - 1
    If $temp > $RightChannel Then $RightChannel = $temp; <--
    _GDIPlus_GraphicsClear($hContext1); Left Channel
    _GDIPlus_BrushSetSolidColor($hBrush1, 0xFEFFFFC0)
    _GDIPlus_GraphicsFillRect($hContext1, 1, 63, 8, 2, $hBrush1)
    _GDIPlus_BrushSetSolidColor($hBrush1, 0xFE00D300)
    _GDIPlus_GraphicsFillRect($hContext1, 1, 1, 8, $LeftChannel, $hBrush1)
    _GDIPlus_GraphicsDrawImageRect($hGraphic1, $hBitmap1, 259, 100, $bg_w1, -$bg_h1)
    _GDIPlus_GraphicsClear($hContext1); Right Channel
    _GDIPlus_BrushSetSolidColor($hBrush1, 0xFEFFFFC0)
    _GDIPlus_GraphicsFillRect($hContext1, 1, 63, 8, 2, $hBrush1)
    _GDIPlus_BrushSetSolidColor($hBrush1, 0xFE00D300)
    _GDIPlus_GraphicsFillRect($hContext1, 1, 1, 8, $RightChannel, $hBrush1)
    _GDIPlus_GraphicsDrawImageRect($hGraphic1, $hBitmap1, 270, 100, $bg_w1, -$bg_h1)
    $LeftChannel -= $decay; <--
    $RightChannel -= $decay; <--
EndFunc
;
Func mciSendString($string = '', $mciMsg = ''); Custom MCI Command and Error Function (Nov-19-2010)
    $mciMsg = DllCall($mciDll, 'long', 'mciSendStringA', 'str', $string, 'str', '', 'int', 180, 'ptr', 0)
    If @error Then Return SetError(@error)
    If $mciMsg[0] <> 0 Then
        Local $eMsg = DllCall($mciDll, 'long', 'mciGetErrorStringA', 'int', $mciMsg[0], 'str', '', 'int', 180)
        If @error Then Return SetError(@error)
        MsgBox(8208, 'MCI Stereo Level Meter', 'MCI Error: ' & $mciMsg[0] & @CRLF & $eMsg[2])
        Return SetError(-1)
    EndIf
    SetError(0)
    Return $mciMsg[2]
EndFunc
;

Edit

Changed some math

Edited by ripdad

Make yourself sheep and the wolves will eat you - Benjamin Franklin

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MCI Stereo Level Meter with Advanced Graphics

Released: Dec-08-2010

Basically, there are 3 graphic layers at work in this one.

1) The background Gradient GDI+ image

2) The left and right Gradient GDI+ image

3) The transparent PNG scale overlay

We'll concentrate on the 3rd.

How is it done?

Draw the image in an image editor. I used Paint Shop Pro.

First, paint the background of it in some bright color you won't be using. I used green.

Then draw whatever image on top of it. When done, save as filetype image.png. Click out.

In IrfanView, open image.png and then save as trans-image.png. A box will come up...

make sure "Save Transparent Color" is check-marked. Click save. Click on green color.

Click out. You now have the transparent overlay.

Convert trans-image.png to binary and add it in like the one at the bottom of the script. Have fun!

; MCI Stereo Level Meter with Advanced Graphics
; Released: Dec-08-2010
;
#include <GDIPlus.au3>
#include <Memory.au3>

Global $mciLevel, $LeftChannel, $RightChannel, $temp, $peakL, $peakR, $decay = 4
Global $mciDll = DllOpen(@SystemDir & '\winmm.dll')
If @error Then Exit
mciInit()

_GDIPlus_Startup()

Local $ui = GUICreate("Example", 300, 200, 200, 200, Default, 0x00000008)
GUISetBKColor(0x000000)
If @OSBuild < 7600 Then WinSetTrans($ui, "", 0xFF); workaround for XP machines

Global $Scale = Load_BMP_From_Mem(BinaryImage()); Load Scale Overlay Image
Global $hGraphic = _GDIPlus_GraphicsCreateFromHWND($ui)
Global $hBitmap = _GDIPlus_BitmapCreateFromGraphics(200, 18, $hGraphic)
Global $ContextA = _GDIPlus_ImageGetGraphicsContext($hBitmap)
;
Global $YellowBrush = _GDIPlus_BrushCreateSolid()
_GDIPlus_BrushSetSolidColor($YellowBrush, 0xFFFFFF00)
;
Local $aFact[4]  = [0.0, 0.0, 0.0, 0.0]
Local $aPosit[4] = [0.0, 0.0, 0.0, 0.0]
Local $iX = 0, $iY = 0, $iWidth = 240, $iHeight = 9
Global $hBrushLn = GDIPlus_CreateLineBrushFromRect($iX, $iY, $iWidth, $iHeight, $aFact, $aPosit, 0xFF55EE00, 0xFFFF0000, 0x00000000)
Global $hBrushBg = GDIPlus_CreateLineBrushFromRect($iX, $iY, $iWidth, 18, $aFact, $aPosit, 0xFF55AA00, 0xFF550000, 0x00000000)
;
GUISetState(@SW_SHOW, $ui)
AdLibRegister('mci_Status_Level', 10)
;
Do; Main loop
Until GUIGetMsg() = -3
;
; Cleanup before exit
AdLibUnRegister('mci_Status_Level')
GUIDelete($ui)
mciSendString('stop myStatus')
mciSendString('close myStatus')
DllClose($mciDll)
_GDIPlus_BitmapDispose($Scale)
_GDIPlus_BrushDispose($hBrushBg)
_GDIPlus_BrushDispose($hBrushLn)
_GDIPlus_BrushDispose($YellowBrush)
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_Shutdown()
Exit
;
Func _HiWord($value); From WinAPI.au3
    Return BitShift($value, 16)
EndFunc
;
Func _LoWord($value); From WinAPI.au3
    Return BitAND($value, 0xFFFF)
EndFunc
;
Func mciInit(); Open a live stream and set 2 channel parameters
    mciSendString('open new type waveaudio alias myStatus buffer 2')
    If @error Then Exit
    mciSendString('set myStatus bitspersample 8 channels 2 samplespersec 11025')
    If @error Then Exit
EndFunc

Func mci_Status_Level()
    $mciLevel = mciSendString('status myStatus level')
    If @error Then Exit
    $temp = Round((_LoWord($mciLevel) / 128) * 200) - 1
    If $temp > $LeftChannel Then $LeftChannel = $temp; <-- snitched from bassenc udf - thanks BrettF
    If $temp > $peakL Then $peakL = $temp
    If $temp < 2 Then $peakL = $temp
    $temp = Round((_HiWord($mciLevel) / 128) * 200) - 1
    If $temp > $RightChannel Then $RightChannel = $temp; <--
    If $temp > $peakR Then $peakR = $temp
    If $temp < 2 Then $peakR = $temp
    ;
    _GDIPlus_GraphicsClear($ContextA); Clear Contents
    _GDIPlus_GraphicsFillRect($ContextA, 0, 0, 200, 18, $hBrushBg); Gradient BackGround Brush
    _GDIPlus_GraphicsFillRect($ContextA, 0, 0, $LeftChannel, 9, $hBrushLn); Gradient Channel Brush (Left)
    _GDIPlus_GraphicsFillRect($ContextA, $peakL, 2, 2, 6, $YellowBrush); yellow peak brush (Left)
    _GDIPlus_GraphicsFillRect($ContextA, 0, 9, $RightChannel, 9, $hBrushLn); Gradient Channel Brush (Right)
    _GDIPlus_GraphicsFillRect($ContextA, $peakR, 10, 2, 6, $YellowBrush); yellow peak brush (Right)
    _GDIPlus_GraphicsDrawImageRect($ContextA, $Scale, 0, 0, 200, 18); Transparent overlay scale (PNG image)
    ;
    ; You can also draw it on .. but you're limited as to what and how you want the graphic made.
    ; _GDIPlus_GraphicsDrawString($ContextA, ' -24      -12      -6      -3      -1', 0, 2, "Arial", 10, 0)
    ;
    _GDIPlus_GraphicsDrawImageRect($hGraphic, $hBitmap, 50, 90, 200, 18); Draw the complete graphic
    ;
    $LeftChannel -= $decay; <--
    $RightChannel -= $decay; <--
    $peakL -= 0.5
    $peakR -= 0.5
EndFunc

Func mciSendString($string = '', $mciMsg = ''); Custom MCI Command and Error Function (Nov-19-2010)
    $mciMsg = DllCall($mciDll, 'long', 'mciSendStringA', 'str', $string, 'str', '', 'int', 180, 'ptr', 0)
    If @error Then Return SetError(@error)
    If $mciMsg[0] <> 0 Then
        Local $eMsg = DllCall($mciDll, 'long', 'mciGetErrorStringA', 'int', $mciMsg[0], 'str', '', 'int', 180)
        If @error Then Return SetError(@error)
        MsgBox(8208, 'MCI Stereo Level Meter', 'MCI Error: ' & $mciMsg[0] & @CRLF & $eMsg[2])
        Return SetError(-1)
    EndIf
    Return $mciMsg[2]
EndFunc

; ==== GDIPlus_CreateLineBrushFromRect ===
; Author: Malkey
; Description - Creates a LinearGradientBrush object from a set of boundary points and boundary colors.
; $aFactors - If non-array, default array will be used.
;           Pointer to an array of real numbers that specify blend factors. Each number in the array
;           specifies a percentage of the ending color and should be in the range from 0.0 through 1.0.
; $aPositions - If non-array, default array will be used.
;            Pointer to an array of real numbers that specify blend factors' positions. Each number in the array
;            indicates a percentage of the distance between the starting boundary and the ending boundary
;            and is in the range from 0.0 through 1.0, where 0.0 indicates the starting boundary of the
;            gradient and 1.0 indicates the ending boundary. There must be at least two positions
;            specified: the first position, which is always 0.0, and the last position, which is always
;            1.0. Otherwise, the behavior is undefined. A blend position between 0.0 and 1.0 indicates a
;            line, parallel to the boundary lines, that is a certain fraction of the distance from the
;            starting boundary to the ending boundary. For example, a blend position of 0.7 indicates
;            the line that is 70 percent of the distance from the starting boundary to the ending boundary.
;            The color is constant on lines that are parallel to the boundary lines.
; $iArgb1    - First Top color in 0xAARRGGBB format
; $iArgb2    - Second color in 0xAARRGGBB format
; $LinearGradientMode -  LinearGradientModeHorizontal       = 0x00000000,
;                        LinearGradientModeVertical         = 0x00000001,
;                        LinearGradientModeForwardDiagonal  = 0x00000002,
;                        LinearGradientModeBackwardDiagonal = 0x00000003
; $WrapMode  - WrapModeTile       = 0,
;              WrapModeTileFlipX  = 1,
;              WrapModeTileFlipY  = 2,
;              WrapModeTileFlipXY = 3,
;              WrapModeClamp      = 4
; GdipCreateLineBrushFromRect(GDIPCONST GpRectF* rect, ARGB color1, ARGB color2,
;             LinearGradientMode mode, GpWrapMode wrapMode, GpLineGradient **lineGradient)
; Reference:  http://msdn.microsoft.com/en-us/library/ms534043(VS.85).aspx
;
Func GDIPlus_CreateLineBrushFromRect($iX, $iY, $iWidth, $iHeight, $aFactors, $aPositions, $iArgb1 = 0xFF0000FF, $iArgb2 = 0xFFFF0000, $LinearGradientMode = 0x00000001, $WrapMode = 0)
    Local $tRect, $pRect, $aRet, $tFactors, $pFactors, $tPositions, $pPositions, $iCount
    If $iArgb1 = -1 Then $iArgb1 = 0xFF0000FF
    If $iArgb2 = -1 Then $iArgb2 = 0xFFFF0000
    If $LinearGradientMode = -1 Then $LinearGradientMode = 0x00000001
    If $WrapMode = -1 Then $WrapMode = 1
    $tRect = DllStructCreate("float X;float Y;float Width;float Height")
    $pRect = DllStructGetPtr($tRect)
    DllStructSetData($tRect, "X", $iX)
    DllStructSetData($tRect, "Y", $iY)
    DllStructSetData($tRect, "Width", $iWidth)
    DllStructSetData($tRect, "Height", $iHeight)
    $aRet = DllCall($ghGDIPDll, "int", "GdipCreateLineBrushFromRect", "ptr", $pRect, "int", $iArgb1, "int", $iArgb2, "int", $LinearGradientMode, "int", $WrapMode, "int*", 0)
    If IsArray($aFactors) = 0 Then Dim $aFactors[4] = [0.0, 0.4, 0.6, 1.0]
    If IsArray($aPositions) = 0 Then Dim $aPositions[4] = [0.0, 0.3, 0.7, 1.0]
    $iCount = UBound($aPositions)
    $tFactors = DllStructCreate("float[" & $iCount & "]")
    $pFactors = DllStructGetPtr($tFactors)
    For $iI = 0 To $iCount - 1
        DllStructSetData($tFactors, 1, $aFactors[$iI], $iI + 1)
    Next
    $tPositions = DllStructCreate("float[" & $iCount & "]")
    $pPositions = DllStructGetPtr($tPositions)
    For $iI = 0 To $iCount - 1
        DllStructSetData($tPositions, 1, $aPositions[$iI], $iI + 1)
    Next
    DllCall($ghGDIPDll, "int", "GdipSetLineBlend", "hwnd", $aRet[6], "ptr", $pFactors, "ptr", $pPositions, "int", $iCount)
    Return $aRet[6]
EndFunc

Func Load_BMP_From_Mem($mem_image) ;coded by UEZ - thanks to progandy form the MemGlobalAlloc lines
    Local $memBitmap, $len, $tMem, $hImage
    $memBitmap = Binary($mem_image) ;load image  saved in variable (memory) and convert it to binary
    $len = BinaryLen($memBitmap) ;get length of image

    $hData = _MemGlobalAlloc($len, $GMEM_MOVEABLE) ;allocates movable memory  ($GMEM_MOVEABLE = 0x0002)
    $pData = _MemGlobalLock($hData) ;translate the handle into a pointer
    $tMem = DllStructCreate("byte[" & $len & "]", $pData) ;create struct
    DllStructSetData($tMem, 1, $memBitmap) ;fill struct with image data
    _MemGlobalUnlock($hData) ;decrements the lock count  associated with a memory object that was allocated with GMEM_MOVEABLE

    $hStream = _WinAPI_CreateStreamOnHGlobal($pData) ;Creates a stream object that uses an HGLOBAL memory handle to store the stream contents
    $hBitmapFromStream = _GDIPlus_BitmapCreateFromStream($hStream) ;Creates a Bitmap object based on an IStream COM interface
    $tMem = ""
    Return $hBitmapFromStream
EndFunc

; #FUNCTION# ====================================================================================================================
; Name...........: _WinAPI_CreateStreamOnHGlobal
; Description ...: Creates a stream object that uses an HGLOBAL memory handle to store the stream contents
; Syntax.........: _WinAPI_CreateStreamOnHGlobal([$hGlobal = 0[, $fDeleteOnRelease = True]])
; Parameters ....: $hGlobal          - A memory handle. If 0, a new handle is to be allocated instead
;                  $fDeleteOnRelease - If True, the release of the IStream interface releases the memory handle as well.
;                  Otherwise, it's the responsibility of the user to release this memory handle.
; Return values .: Success      - A pointer to new stream object
;                  Failure      - 0
; Remarks .......: None
; Related .......: _MemGlobalFree
; Link ..........; @@MsdnLink@@ CreateStreamOnHGlobal
; Example .......; No
; ===============================================================================================================================
Func _WinAPI_CreateStreamOnHGlobal($hGlobal = 0, $fDeleteOnRelease = True)
    Local $aResult = DllCall("ole32.dll", "int", "CreateStreamOnHGlobal", "hwnd", $hGlobal, "int", $fDeleteOnRelease, "ptr*", 0)
    If @error Then Return SetError(@error, @extended, 0)
    Return $aResult[3]
EndFunc

; #FUNCTION# ====================================================================================================================
; Name...........: _GDIPlus_BitmapCreateFromStream
; Description ...: Creates a Bitmap object based on an IStream COM interface
; Syntax.........: _GDIPlus_BitmapCreateFromStream($pStream)
; Parameters ....: $pStream - Pointer to an IStream COM interface
; Return values .: Success      - Returns a handle to a new Bitmap object
;                  Failure      - 0 and either:
;                  |@error and @extended are set if DllCall failed
;                  |$GDIP_STATUS contains a non zero value specifying the error code
; Remarks .......: After you are done with the object, call _GDIPlus_ImageDispose to release the object resources
; Related .......: _GDIPlus_ImageDispose, _WinAPI_CreateStreamOnHGlobal
; Link ..........; @@MsdnLink@@ GdipCreateBitmapFromStream
; Example .......; Yes
; ===============================================================================================================================
Func _GDIPlus_BitmapCreateFromStream($pStream)
    Local $aResult = DllCall($ghGDIPDll, "uint", "GdipCreateBitmapFromStream", "ptr", $pStream, "int*", 0)
    If @error Then Return SetError(@error, @extended, 0)
    $GDIP_STATUS = $aResult[0]
    Return $aResult[2]
EndFunc

Func BinaryImage($bin = 0); Transparent PNG Graphic
   $bin = "0x89504E470D0A1A0A0000000D49484452000000C8000000120802000000919F06800000000674524E53004000FF0040" & _
   "FE112AA5000000097048597300000AEB00000AEB01828B0D5A000001E849444154785EED59FD8E833008D7CB3DD8F6E4" & _
   "DB9BF5985C4853C052A5984CCCFED816CAEFA394565D1FE5B118AEF7FA36461A92754222B1804A301C89FF6EDC9FF375" & _
   "9019D201EEC01AD687D2FD5B39901DEB56D31D27562DACD7F2C20FE722FE799232CFB943E02456335C93E98B2282CE70" & _
   "B24B3B06542E2CC07E2ECF75BB1A1EF8130E9E5D01C6009AD73AE70E01635A631801392AEA4287A9D396508058B9B0A0" & _
   "AAF09E054F60C4031DE91A37148015DC0CD1080C65EE06A39C5A6977884B408C3A4E55B4DA45114FF2ABE5C592AA2B89" & _
   "A66129CE64C41B084EC019754BF769C09B1CF705B3CF16D461EF8FC79D61A35A58B4DFD53AEB055D7F3FC94CC412733A" & _
   "82627E0E4DCDB294326F8E45C9D8B73EB8803CE7B25BED8EFFBF15D289AAD9F5EA8778C0125C40AEF0E530158E155355" & _
   "D81EF0E0581F32F88E7F589A365093DC9C34C270DD81F6B6C27A3FE2AD0297178E87AAC2857EF8195877A07BAF22E55D" & _
   "E849A6737B27013569AFD2AB9EB1E8F041E78086A217636AD7D805693FE204DC6702B0A8F5CEDB07396DC0BA6493D2AC" & _
   "76371612AA4FDE9B3BD2A68C7CDF738958FB041CBD2020AFA562E476096E98ABF94AC758061936E640BED219F32BA38D" & _
   "0E6461198DCAB03107AC8515F01280884762016830DC55328371AD853556AE197D7B07FE0050490DCA8B638EE3000000" & _
   "0049454E44AE426082"
   Return $bin
EndFunc

Make yourself sheep and the wolves will eat you - Benjamin Franklin

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