I need some help optimizing a file based pixel search

[AndyG]

 

for some reason AutoIt + DLLs + My computer = Crash.

Thats not your fault, it was mine! I copied some code from an other of my scripts and did a heavy mistake which causes AutoIt to crash in some cases....   I try to explain:

The findbytes()-function finds bytes, not pixels! If there is a sequence of 3 bytes, which is not ONE pixel but a part of two pixels then the line  

$i = FindBytes($Scan0, $i + 1, (Abs($stride) * ($Height)), $ptr, 3) + 1

crashes because the third parameter (which should be the rest of the size of the searching) was wrong....so

$i = FindBytes($Scan0, $i + 1, (Abs($stride) * ($Height))-$i, $ptr, 3) + 1

is right!

The bug is fixed now in the above scripts!  

Edited January 6, 2010 by AndyG