Bitmap to autoit array

[randall]

I just used Simucal's extprop.au3

and Larry's user32.dll and gdi32.dll exploiting code for finding the colour of a pixel here

expandcollapse popup

#include <ExtProp.au3>

$szPicFile = ;-----> PUT THE NAME AND LOCATION OF THE BITMAP HERE

HotKeySet("{ESC}", "Terminate")
Func Terminate()
    FileClose($file)
    Exit 0
EndFunc   ;==>Terminate

;-get last pixels
$imgwidth = StringTrimRight(_GetExtProperty($szPicFile,27),7)-1
$imgheight = StringTrimRight(_GetExtProperty($szPicFile,28),7)-1
$nofpixels = ($imgwidth+1) * ($imgheight+1)
;--------------


;-initialise Array
Global $imgarray[$imgwidth+1][$imgheight+1]

;-open image
Const $GWL_HINSTANCE = -6
Const $IMAGE_BITMAP = 0
Const $LR_LOADFROMFILE = 0x0010

Dim $hInst, $hBmp, $hMemDC, $hwnd

Opt("WinWaitDelay",1)
AutoItWinSetTitle("qqqqqq")
$hwnd = WinGetHandle("qqqqqq")

$hInst = DllCall("user32.dll","int","GetWindowLong","hWnd",$hwnd, "int",$GWL_HINSTANCE)
$hInst = $hInst[0]

$hBmp = DllCall("user32.dll","hwnd","LoadImage","hwnd",$hInst,"str",$szPicFile,"int",$IMAGE_BITMAP, _
        "int",0,"int",0,"int",$LR_LOADFROMFILE)
$hBmp = $hBmp[0]

$hMemDC = DllCall("gdi32.dll", "int", "CreateCompatibleDC", "int", 0)
$hMemDC = $hMemDC[0]

DllCall("gdi32.dll", "hwnd", "SelectObject", "int", $hMemDC, "hwnd", $hBmp)
;-------------------------------------



;-get pixels and populate array
ProgressOn("Progress Meter", "Copying Pixels into array") ; start progress bar
For  $y = 0 To Round($imgheight) Step 1
    For  $x = 0 To Round($imgwidth) Step 1
        ;get pixel colour
        $ret = DLLCall("gdi32.dll","int","GetPixel","int",$hMemDC,"int",$x,"int",$y) ;x and y of pixel
        $ret = Hex( $ret[0], 6)
        $ret = StringRight($ret,2) & StringMid($ret,3,2) & StringLeft($ret,2)
        ;stick it in the array
        $imgarray[$x][$y] = $ret

        ProgressSet(   ((($x+1)+($y*$imgwidth))/$nofpixels) * 100,Round((($x+1)+($y*$imgwidth))/1000) & " of " & Round($nofpixels/1000) & " thousands")
    Next
Next

ProgressSet(100 , "Done")
ProgressOff()

;-close image
DllCall("gdi32.dll", "int", "DeleteDC", "hwnd", $hMemDC)
DllCall("gdi32.dll", "int", "DeleteObject", "hwnd", $hBmp)
;-------------------------------------

Now, this is all very nice, and raw image processing can be done, and then the stuff can even be written back to BMP with evilertoaster's BMP library from this post

The problem however, is that both the solution i hacked and the one evilertoaster proposed are very slow.

Mine takes minutes to load very large files into memory on an A64, and i think the same goes for evilertoaster's code.

Is it maybe possible to use the BitBlt function in gdi32.dll to copy the whole image and then access it directly from memory by autoit, and maybe then also write it back to file in the same way. I think this may open new possibilities for doing image processing with autoit.

[SmOke_N]

If I'm not mistaken, Larry did use BitBlt for the new pixel Functions in beta (can't remember which one), but the current ones I'm fairly sure are using it.

[randall]

Larry did use BitBlt for the new pixel Functions in beta

I think he knows how to do this sort of stuff, and if I was clever enough i could figure it out from his other work. The problem is that the stuff that has been done is geared towards loading and manipulating screen shots rather than image files, which is what i am trying to do