[pywin32-bugs] [ pywin32-Feature Requests-1374042 ] Improve GetBitmapBits()

[SourceForge.net <no...@so...>]

Feature Requests item #1374042, was opened at 2005-12-06 15:29
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=551957&aid=1374042&group_id=78018

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: win32
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Stuart Woolford (swoolford)
Assigned to: Nobody/Anonymous (nobody)
Summary: Improve GetBitmapBits()

Initial Comment:
It would be a great enhancement to GetBitmapBits if it
would return a string of the bitmap data, rather than a
tuple of integers.
The reasoning for this is that just about every other
imaging library (for example PIL and wxPython) can
handle data as a string of bytes, and converting to
this is VERY slow.

I would suggest perhaps there should be a
GetBitmapBitsString() added..

As an example at present I have to:

bmp=win32ui.CreateBitmapFromHandle(mybitmap)
data=array.array('B',bmp.GetBitmapBits()).tostring()  
      image=Image.fromstring("RGBA",size,data,"raw","BGRA"

And the middle line takes around 0.7 seconds for
720x576x32bit, this is VERY slow.

I would like to:

bmp=win32ui.CreateBitmapFromHandle(mybitmap)
data=bmp.GetBitmapBitsString()
image=Image.fromstring("RGBA",size,data,"raw","BGRA"
Which should take MUCH less time.

This is currently an urgent problem, but the change is
trivial and I will do it to my own copy, hopefully
submitting a patch, although I dont usually do much C
under windows.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=551957&aid=1374042&group_id=78018