Comments on: Getting JPG dimensions with AS3 without loading the entire file

By: BryOnRye

BryOnRye — Wed, 06 Jul 2011 16:42:35 +0000

Your post helped me to write code to find the difference between RGB and CMYK jpgs. Very useful. Thanks

By: Wrapping text around an image or movieclip in Flash | Making Waves Labs

Wrapping text around an image or movieclip in Flash | Making Waves Labs — Tue, 10 May 2011 11:17:52 +0000

[...] There are many situations where getting an image’s dimensions before loading it is desireable, and Flash doesn’t ship with any built-in methods for this. Thankfully, Antti Kupila has written an excellent class for exactly this purpose, called JPGSizeExtractor. [...]

By: Asger

Asger — Sun, 13 Feb 2011 15:01:45 +0000

@Dew: but that seems it would very easy to extend it to that. It just marker 0xFF 0xC2 in stead of 0xC0. I don’t know if the rest of the payload is similar though, but I could imagine

By: Ryan

Ryan — Sat, 05 Feb 2011 01:45:10 +0000

Hi,

I’m trying to modify this so I can check to see if the image is using a CMYK color profile. Anyway you could help with this, as all my attempts so far are unsuccessful? Thanks in advance!

By: Dew

Dew — Thu, 20 Jan 2011 21:37:14 +0000

Hi,
thanks for the class it’s very useful.
you asked “…If anybody has an idea of what’s common to these files…”
well I discovered it wouldnt work with progressive JPG’s.

By: Ali

Ali — Tue, 13 Jul 2010 22:50:30 +0000

it was very useful for me.
thanks

By: locust

locust — Wed, 23 Jun 2010 03:48:19 +0000

if i want to know what length(bytes) it is before it has loaded
How can I do that?
Thanks a lot

By: Alyda

Alyda — Wed, 31 Mar 2010 22:34:02 +0000

Hi Antti, thanks for this great class, this might seem like a silly question, since I know enough AS3 to actually implement this code and make it work in a loop, but after changing the “stopWhenParsed” variable to “false”, I’m unable to figure out how to actually add the loaded file (via JPGSizeExtractor) to the stage from an Event.Complete listener i am added to the “je” variable.

thanks in advance!

By: Antti

Antti — Sat, 13 Feb 2010 16:11:28 +0000

Excellent, thanks for sharing Christophe!

By: Christophe Herreman

Christophe Herreman — Fri, 12 Feb 2010 21:16:35 +0000

Hi, thanks for this class. I created a simple size extractor for PNG files and thought you might be interested. More info: http://www.herrodius.com/blog/265