.Gif loader?

Blitz3D Forums/Blitz3D Programming/.Gif loader?

Picklesworth

(Posted 2005) [#1]

Has anyone done a loader for Gif images?

jfk EO-11110

(Posted 2005) [#2]

You can load GIFs with OpenMovie AFAIK - then could copyrect them from the backbuffer. Don't know if this works with non-animated Gifs as well.
Also, wasn't there a Gif Loader in the archives?

Snarkbait

(Posted 2005) [#3]

AFAIK, the compression algorithm for GIF files (LZW) is patented, thereby it would technically be illegal to make your own GIF loader (if you didn't want to use the Movie commands.) That being said, it wouldn't be too hard to do, however. ;)

jfk EO-11110

(Posted 2005) [#4]

AFAIK it is not longer patented. Anyway, only the saver was patented, not the loader, practically. (Unlike MP3)
...look:

GIF Patent Expires In USA
Posted: Mon, 23 Jun 2003 04:14:41 GMT
Author: Bryan McDaniel

Yesterday the 20 year Unisys patent for the LZW (Lempel Ziv Welch) compression algorithm expired in the US. This patent is the basis of the popular GIF (Graphics Interchange Format) which is used on many images in web pages.

The counterpart Canadian patent expires July 7, 2004, the counterpart patents in the United Kingdom, France, Germany and Italy expire June 18, 2004, and the Japanese counterpart patents expire June 20, 2004

( http://www.overclockersclub.com/?read=EpVyFyFklEKKSgawrx )

RGR	(Posted 2005) [#5]

http://www.blitzbasic.com/codearcs/codearcs.php?code=619
This one from Peter Scheutz could be what you need

Picklesworth

(Posted 2005) [#6]

Thanks for the help :)