| gabriel rosenkoetter on Thu, 22 Aug 2002 13:40:09 +0200 |
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On Thu, Aug 22, 2002 at 10:47:58AM +0200, Jeff Abrahamson wrote: > I have an image from my former life as a Mac user. Neither gimp nor > ImageMagick knows how to open it. What does file(1) think it is? NetBSD's magic file (we keep it at /usr/share/misc/magic, check your local magic(5)) recognizes a variety of details about a standard JPEG, like whether its JFIF or EXIF and, if it's JFIF, tries to get the dimensions out of the file (though there's no guarantee that'll work; magic(5) language is far from the TCM it would take to figure that out, and you probably wouldn't want file(1) effectively decoding every data file it was asked about). But after all that, we've got this: # HSI is Handmade Software's proprietary JPEG encoding scheme 0 string hsi1 JPEG image data, HSI proprietary You might want to ask Mr. Internet about that one... (It's pretty easy to verify this; those should be the first four bytes in the file.) > > jpeg. Old format, if there is such a thing, since jpegViewer knows > > it, but ImageViewer (part of QT) doesn't without some coaxing. It's of note that jpegViewer (which is quite good, btw, if short on frills) is quasi-commercial software. (It was free but they wanted you to buy something bigger, if memory serves.) So they may have had a license from Handmade Software, whoever they are (or, probably, were). > I'm guessing it's some proprietary compression scheme. Good guess, I think. -- gabriel rosenkoetter gr@eclipsed.net Attachment:
pgpLvTv96r7Lq.pgp
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