Loop over 1M numbers fails on 9964th iteration

[argumentum]

57 minutes ago, junkew said:

..and then run 10 au3 exe files..

.. I told him about forking but it may be too much too soon. Eventually he'll come to desire the idea and jump on it  

[junkew]

Maybe someone will invent multithreading 😉 for this problem

[argumentum]

multithreading has the same semaphore issues to keep in mind as forking. Not a big difference in complexity.

[Werty]

Now we are getting somewhere, updated version, got rid of gdiplus, no more bitmapcreatefromHbitmap or bitmaplockbits.

Though I couldnt get screencapture_capture to work with it, need to experiment some more, so made my own. (I can only guess but I think there's something wrong with screencapture_capture function, the same problem i had earlier where I had to use bitmapclone)

;Be sure $posx and $posy is pointing at the correct spot!
Global $posx = 1718, $posy = 699, $result = "", $code[3]
;Lookup table to avoid searching
Global $digit[115] = [1,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0, _
                      0,0,0,0,0,0,0,0,0,0,6,0,0,0,3,2,0,0,0,0, _
                      0,0,0,0,0,0,0,0,9,0,0,0,0,0,8,0,0,0,0,0, _
                      0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, _
                      0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, _
                      0,0,0,0,0,0,0,0,0,0,0,0,0,0,5]

;Instead of screencapture_capture()
    $hDDC = _WinAPI_GetDC(0)
    $hCDC = _WinAPI_CreateCompatibleDC($hDDC)
    $hBmp = _WinAPI_CreateCompatibleBitmap($hDDC, 34, 20)
            _WinAPI_SelectObject($hCDC, $hBmp)
            _WinAPI_BitBlt($hCDC, 0, 0, 34, 20, $hDDC, 1718, 699, 0x00CC0020)
            _WinAPI_DeleteDC($hCDC)

    $result = Getnumber($result)

Func Getnumber($result)
    
    Local $code[3] = [0,0,0], $value = 64, $pixels = DllStructCreate('dword[680]')
    DllCall('gdi32.dll', 'dword', 'GetBitmapBits', 'ptr', $hBmp, 'dword', DllStructGetSize($pixels), 'ptr', DllStructGetPtr($pixels))

For $loop = 1 To 680 Step 102
    $code[0] += DllStructGetData($pixels, 1, $loop   ) = 4278255360 ? $value:0
    $code[1] += DllStructGetData($pixels, 1, $loop+16) = 4278255360 ? $value:0
    $code[2] += DllStructGetData($pixels, 1, $loop+32) = 4278255360 ? $value:0
    $value /= 2
Next
    Return String($digit[$code[0]]) & String($digit[$code[1]]) & String($digit[$code[2]])
EndFunc

And a runable example (needs pic from the zip earlier)

expandcollapse popup

#include <GDIPlus.au3>
#include <WinAPI.au3>
HotKeySet("{ESC}", "_exit")


;Be sure $posx and $posy is pointing at the correct spot!
Global $posx = 1718, $posy = 699, $result = "", $code[3]
;Lookup table to avoid searching
Global $digit[115] = [1,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0, _
                      0,0,0,0,0,0,0,0,0,0,6,0,0,0,3,2,0,0,0,0, _
                      0,0,0,0,0,0,0,0,9,0,0,0,0,0,8,0,0,0,0,0, _
                      0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, _
                      0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, _
                      0,0,0,0,0,0,0,0,0,0,0,0,0,0,5]
;Test section
;--------------------------------------------------------------
$gui = GUICreate("Getnumber", 640, 480, -1, -1)
       GUISetState()
       WinWaitActive($gui); <--- necessary or screencapture fails

            _GDIPlus_Startup()
$graphics = _GDIPlus_GraphicsCreateFromHWND($gui)
   $image = _GDIPlus_BitmapCreateFromFile("374.png")
            _GDIPlus_GraphicsDrawImageRect($graphics, $image, 280, 200, 136, 31)
Sleep(10); <------- necessary because drawimagerect() is too slow, script occasionally fails without
;--------------------------------------------------------------
;/Test section

$time = TimerInit()
    ;Instead of screencapture_capture()
    $hDDC = _WinAPI_GetDC(0)
    $hCDC = _WinAPI_CreateCompatibleDC($hDDC)
    $hBmp = _WinAPI_CreateCompatibleBitmap($hDDC, 34, 20)
            _WinAPI_SelectObject($hCDC, $capture)
            _WinAPI_BitBlt($hCDC, 0, 0, 34, 20, $hDDC, 1718, 699, 0x00CC0020)
            _WinAPI_DeleteDC($hCDC)

$result = Getnumber($result)

Consolewrite("Result: " & $result & " Time: " & TimerDiff($time)/1000 & @crlf)

While 1
   Sleep(10)
WEnd

Func Getnumber($result)
    
    Local $code[3] = [0,0,0], $value = 64, $pixels = DllStructCreate('dword[680]')
    DllCall('gdi32.dll', 'dword', 'GetBitmapBits', 'ptr', $hBmp, 'dword', DllStructGetSize($pixels), 'ptr', DllStructGetPtr($pixels))

For $loop = 1 To 680 Step 102
    $code[0] += DllStructGetData($pixels, 1, $loop   ) = 4278255360 ? $value:0
    $code[1] += DllStructGetData($pixels, 1, $loop+16) = 4278255360 ? $value:0
    $code[2] += DllStructGetData($pixels, 1, $loop+32) = 4278255360 ? $value:0
    $value /= 2
Next
    Return String($digit[$code[0]]) & String($digit[$code[1]]) & String($digit[$code[2]])
EndFunc

Func _exit()
    _GDIPlus_Shutdown()
    Exit
 EndFunc

I guess it should be faster now, please test and report back.

(i havent forgotten about the walkthrough, got busy as you can see, hang on)

/edit

Btw, if you are loading alot of images from disk then make sure they are in uncompressed .bmp format, it takes up more space on the drive but it's faster than png, doesnt have to be decompressed as png does, Atleast 5-10% faster using bmp, especially with that many pics.

Edited Wednesday at 12:59 AM by Werty

[AndyG]

6 hours ago, Werty said:

Btw, if you are loading alot of images from disk then make sure they are in uncompressed .bmp format, it takes up more space on the drive but it's faster than png,

Yes, and much more advantage if one knows the "bitmap" FILE ( ! ) format? Skip the first 54 bytes (file header)  and you will find....the "pixels" aka image data pixelarray (depending on the 1/2/4/8/16/24/32 Bit per Pixel mode (see header...)). So no need to CreateBitmapFromFile() because a simple "open" file gives access to the pixel data array....

Go and get the first "line" of the bitmap (as a char-string) and search in the screenshot (transfer the screenshot-bytes into a char-array...others say "string") with StringInstr().

If the first line of the bitmap is found in the screenshot, the comparison of the next "line" in the bitmap with the next "line" in the screenshot is easy. Because the position of the text ( a char-array ist the same as a byte array) is known in the screenshot-"text", the comparison with the next "lines" is only a comparison of "text" (StringMid() is our friend) .

I have written a few example scripts with this method to find a "bitmap in a bitmap". I have to look for them at the weekend Speed-challenge opened!