Load JPG on iPhone broken, when used with PNGs

[bigsofty]

Loading a jpeg, then loading a png, causes "EXC_BAD_ACCESS"

Code (glbasic) Select Expand


SETCURRENTDIR("Media")
LOADSPRITE "test.jpg", GENSPRITE()
LOADSPRITE "movcarmtxt.png", GENSPRITE()// PNG's need to be 1st

I don't think the JPEG file type (bits, compression etc.) matters but I can supply the above files if need be.

[MrTAToad]

It does pretty much on other platforms too

[Scott_AW]

Don't use JPEGs, they're horrible and should be forgotten.

[bigsofty]

Its not a real situation, only coded to show the error. 

I don't have to use JPEGs but Gernot needs to be aware of the error.

[Kitty Hello]

I am aware of that. The JPEG laoder is buggy and for iPhone even more.
I never wanted JPEG, just that you know. that's what I get for implementing features I don't really like :/

[MrTAToad]

Shame you cant get rid of it 

[FutureCow]

I've just encountered this bug too on a windows box (it does do a very nice program crash doesn't it?  ). It drove me nuts tracking it down as I could load a jpeg once and it would work, if I then loaded it again (under a different sprite number) it crashed. At least I know I can fix it by migrating everything to PNG (which is normally my format of choice anyway, I just inherited a lot of graphics in jpeg and used them as GLBasic supported them.)

[bigsofty]

I agree, it can be a horrible bug to find as the line causing the bug actually works fine, its another, relatively unrelated line that actually crashes... 

JPEG, is not a good format any-ways, maybe JPEG support should be pulled while this bug exists?

[Ian Price]

JPEG, is not a good format any-ways,

Which is why only 99.9%* of photographic devices produce this format as standard...

It is a necessay evil - it can be very useful in apps - especially since GLB supports iPhone, which itself uses the JPEG format. It is a relevant and very popular format that I think needs to be included and fixed. As developers we can choose not to use it; but if we do, it should work.




* approximate guesstimation

[Kitty Hello]

Yes. I have the new jpeg lib here and will see if it can fit the old code.

[Ian Price]

[MrTAToad]

Yey!  We can them mercilessly test it

[bigsofty]

Cool, thanks Gernot! 

... I should have that made into my sig, save time typing! 

[Scott_AW]

JPEG, is not a good format any-ways,

Which is why only 99.9%* of photographic devices produce this format as standard...

Bad habits die hard I guess.  I do photo toning and clip art for my job time to time, I've grown to loath JPEGs with a passion.

[Ian Price]

Bad habits die hard I guess.  I do photo toning and clip art for my job time to time, I've grown to loath JPEGs with a passion.

Well, whether you like it or not, it's not going away anytime soon.

I do happen to agree though, especially now that we have huge amounts of storage space in something smaller than a fingernail. There is really no excuse for not offering alternative formats for saving images, but how many of todays devices do? I suspect maybe only the ones deemed for "professional" use.