I'd personally stick to the JIG lib, due to it's portability to other platforms, and the fact that it's more flexible. It allows you to read JPEG data from memory or from an ANSI standard file stream. Intel's allows memory reads only (Or so I think).
No, you can read and write from/to memory AND files (entry JPGFile in struct JPEG_PROPERTIES).Originally posted by fenris:
I'd personally stick to the JIG lib, due to it's portability to other platforms, and the fact that it's more flexible. It allows you to read JPEG data from memory or from an ANSI standard file stream. Intel's allows memory reads only (Or so I think).
By the way, a neat feature of the IJL is the possibility to decompress only a sub-image of a JPEG-image.
Kosta
I must be the 10th person that asks you this, but could you send me your PIC loader class ?
I can't use the JPEG lib with my compiler, there is always a linkage error which I cannot solve.
thanx in advance.
Prekipik
my mail: prekipik@club-internet.fr
Personally I think JPEGS are evil when you map them onto objects. Their lossy compression works well for skin tones and stuff but for 'pure' colours, it just plain sucks.
There was a .png loader floating about somewhere - I recommend that...
Paul Groves
[b] pauls opengl page
Not exactly source code, but I have an excellent jpg library for OpenGL (aptly named mkOpenGLJPEGImage). Have a look at
http://math.ucsd.edu/~mkennedy/software if
you're interested.
You can find something free and with source code here http://shiptech.tuniv.szczecin.pl/~weyna/OpenGL/
I agree with Pauly's post that JPEG images do not result in high quality texture maps.
Having said that, I'll note that a link to the IJL can be found in 24.050 of the OpenGL Technical FAQ.
You guys should check out the discussion the recently went on in the OpenGL Game Dev mailing list about using JPEGs as textures! Look on www.egroups.com under opengl game dev list and find the messages with the subject ANNOUNCE: mkOpenGLJPEGImage Class.
Enjoy,
Michael
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