Re: [gtk-list] Re: Displaying JPEGs

[grundman cs uni-duesseldorf de (Sven Grundmann)]

> 
> Hi all.
> 
> >On 13 Feb, Mike Lindahl scribbled:
> >->  I am relatively new to GTK and am trying to get jpegs to display.  I am
> >->  using the libjpeg library and that is not a problem.  I have successfully
> >->  loaded the image into an array of memory.
> >->
> >->  My problem comes in trying to display it.  My first idea was to use
> >->  successive calls to gdk_draw_point.  This works, however, it takes _way_
> >->  too long.  Since I am running on an 8-bit display, I also have to allocate
> >->  color entries (I am not entirely sure if I am doing this correctly,
> >->  but...).
> 
> I am stuck on a similar problem. That's why I joined this list ;)
> I want to display an 8-bit gray scale image stored in an array,
> Damn that slow color allocation, huh? As a last resort, I tried what
> you did, and it was slow as hell :)
> 
> 
> >there is a whole library designed just to do all of this:
> >
> >http://www.labs.redhat.com/imlib/
> >
> >save yourself a lot of work :)
> 
> 
> It would be nice if you could specifically tell me which lines of
> imlib code to look into. Reverse engineering is a time comsuming
> process, you know :)
> 
> Also, related to slow color allocation, how would you display many
> lines of various colors as fast as possible?
> 
> 
> Cheers,
> 
> JS
I also want to disaply a 8 bit greyscale image out of raw data ! If you get
any further information please let me know .

SG

grundman@cs.uni-duesseldorf.de

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